JP3271913B2 - Motor actuator and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor actuator and a method of manufacturing the same, and more particularly, to a motor actuator having an electrical wiring portion and a method of manufacturing the same.

[0002]

BACKGROUND OF THE INVENTION As a conventional motor actuator, there is one disclosed in Japanese Utility Model Laid-Open Publication No. 62-33691. In this motor actuator, when a brush provided on an output gear contacts a circuit pattern, a circuit is conducted and rotates, and this circuit pattern is provided on a printed circuit board. The circuit pattern is connected to a power supply plate for the motor and connector pins for connection to the outside.

[0003] Here, since these power supply plates and connector pins are connected by soldering, connection work is troublesome. Moreover, since the power supply plate and the connector pins are manufactured separately and separately, there is a problem that the number of parts increases and the cost increases. Further, the work of providing the brush on the output gear is also troublesome.

A conventional position detecting device provided in a motor actuator is disclosed in Japanese Utility Model Publication No. 7-32179.
There is one disclosed in Japanese Patent Application Laid-Open Publication No. H10-26095. In this position detection device, a brush provided on an output shaft and rotating with the output shaft contacts an encoder pattern, and performs position detection from this contact state. This encoder pattern is
A common contact piece formed on a printed circuit board facing the brush and always in contact with the brush, and a plurality of single contact pieces disposed around the common contact piece; The position is detected from the state of contact with. Here, the plurality of single contact pieces are provided independently on the printed circuit board, and there is a problem that the number of components increases. In addition, the single contact pieces provided independently of each other are liable to be damaged such as the end of the single contact piece being turned up when sliding with the brush which rotates repeatedly, and the reliability of the position control is high. Was also low. Further, the work of providing the brush on the output gear is also troublesome.

The present invention has been made in order to solve the conventional problems, and has as its object to reduce the number of parts,
An object of the present invention is to provide a motor actuator and a method for manufacturing the motor actuator, which can simplify manufacturing operations and reduce costs.

[0006]

In order to achieve the above object, a motor actuator according to the present invention comprises: a gear rotated by a motor; a pattern conductor provided on one surface of the gear and rotating together with the gear; And a conductive unit, wherein the conductive unit has first and second conductive plates connected to each other and solidified by an insulating resin,
The first conductive plate has a plurality of brushes that slide on the pattern conductor, and a first pattern portion that forms a predetermined power distribution pattern including a plurality of first connection portions,
The second conductive plate includes: a plurality of external connection terminals for electrically connecting to another component; and a second pattern portion including a plurality of second connection portions and forming a predetermined power distribution pattern. Wherein the conductive unit has a pair of power supply terminals formed by the first and second conductive plates, and at least one of the first and second connecting portions is cut. The power distribution patterns of the first and second pattern portions are modified so as to be suitable for driving the motor.

Here, the gear rotated by the motor is
Also includes a reduction gear other than the output gear having the output shaft. Also,
As the pair of power supply terminals, both terminals may be formed on either the first conductive plate or the second conductive plate, or one terminal and the other terminal of the pair of terminals may be connected to each other. It may be divided and formed on either the first conductive plate or the second conductive plate.

In the present invention, the plurality of brushes, the pair of power supply terminals, and the plurality of external connection terminals are integrally formed on the first conductive plate or the second conductive plate together with the first or second pattern portion. Since it is formed, it is not necessary to perform each soldering, and it is easy to manufacture and the number of parts can be reduced.

Further, since the brush, the power supply terminal, and the external connection terminal are integrally formed as a unit, a plurality of the brush, the power supply terminal, and the external connection terminal can be simultaneously attached to the housing. Therefore, the mounting operation can be simplified. In addition, since each terminal is held in advance by the insulating resin, even if an unnecessary first or second connecting portion is cut, each member does not fall apart.

[0010] Since the first conductive plate including the brush and the second conductive plate including the external connection terminals are separate bodies, the conductive plate for manufacturing each conductive plate is appropriately selected, so that after the manufacture, The required strength and elasticity of each conductive plate can be obtained without the need for processing or the like.

One of the first and second connecting portions has a claw portion folded in a direction along an extending direction of the external connection terminal of the second conductive plate, and the first or second connecting portion has a claw portion. Either of the two connecting portions may have a mounting portion held by the folded claw portion.

According to the present invention, since the claw portion is folded back in the direction along the extending direction of the external connection terminal, the external connection terminal does not deviate from the axis when the claw portion is folded back. And the displacement of the external connection terminal can be prevented.

Further, if the first and second connecting portions have holes and protrusions that engage with each other for alignment, the positional displacement of the external connection terminal can be further prevented.

It is preferable that the second conductive plate is formed thicker than the first conductive plate.

According to this configuration, the second conductive plate including the external connection terminal is formed thicker than the first conductive plate including the brush which requires a predetermined elasticity. The external connection terminal can be given a predetermined strength, and can be prevented from being deformed at the time of fitting with the mating connector.

The pattern conductor includes a conductor portion formed on a circumference centered on the axis of the gear, and a part of the conductor portion on a first circumference centered on the axis of the gear. A first blocking portion formed in an arc shape along the first portion and interrupting conduction of the conductor portion; and a part of the conductor portion having an arc shape along a second circumference centered on the axis of the gear. A second blocking portion formed at a position shifted by a predetermined angle from the first blocking portion;
Wherein the plurality of brushes are a constantly conductive terminal that always slides on the conductor part avoiding the first blocking part and the second blocking part, and the first brush in which the first blocking part is formed. A first intermittent conductive terminal that slides on the circumference of the first and a second intermittent conductive terminal that slides on the second circumference on which the second blocking portion is formed. May be done.

According to the present invention, when the first or second intermittent conductive terminal comes into contact with the conductor portion, the first or second intermittent conductive terminal conducts with the always-conducting terminal which is always conductive with the conductor portion, and the motor rotates. It can be configured as follows.

When the first interrupted conductive terminal contacts the first interrupting portion or the second interrupted conductive terminal contacts the second interrupting portion, the first or second interrupted conductive terminal and the always-on conductive terminal are connected. Is interrupted, and the motor stops. Therefore, the rotation of the motor can be controlled according to the shapes of the conductor and the cutoff.

The pattern conductor has a predetermined resistivity and is formed in a circular arc shape centered on the axis of the gear, and is formed on a circumference centered on the axis of the gear, and A conductor portion electrically connected at one end in the length direction of the arc of the resistor portion, wherein the plurality of brushes are connected to a conductor conductive terminal that is in contact with the conductor portion and conducts, and And a resistive conductive terminal that makes contact and conducts.

According to the present invention, the conductive conductive terminal is connected to and contacted with the conductive part, the conductive part is connected to one end of the resistance part, and the resistance conductive terminal is connected at a predetermined point in the length direction of the resistance part. It comes into contact and is electrically connected. Here, since the conductor is connected at one end in the length direction of the arc of the resistor, the resistance between the contact and the conductor is determined by the position of the contact of the resistive conductive terminal sliding on the resistor. The length of
The resistance value changes. Then, when the gear rotates, the resistive conductive terminal slides on the resistive portion to cause a voltage drop with a different resistance value and is electrically connected. Then, the resistance can be changed, and the rotation of the motor can be controlled by changing the resistance according to the rotational position of the gear.

The pattern conductor includes a common conductor portion formed along a circumferential direction around the axis of the gear, and a plurality of concentric rows arranged around the common conductor portion at intervals in the circumferential direction. Having a plurality of individual conductor portions disposed, the common conductor portion and the plurality of individual conductor portions are connected and integrated at least a part of the inside or outside, respectively, the plurality of brushes, A common brush that slides on the circumference on which the common conductor is formed and always contacts the common conductor; and a common brush that slides on the circumference on which each of the plurality of individual conductors is formed. And an individual brush contacting the individual conductor portion.

In the present invention, the common conductor is always in contact with the common brush. Then, the signal line is determined by the combination of the contact state between the individual conductor portion and the individual brush, and the position is detected. A signal line can be easily changed by changing a common conductor portion and an individual conductor portion and changing a cutting position of the first or second connection portion, and a low-cost motor actuator is provided. Can be. Further, since the common conductor portion and the individual conductor portion are integrally formed, it is easier to form and has a higher strength than the case where the individual conductor portion is formed independently, and is repeatedly formed with the individual brush. Since it is hard to break even if it slides, the reliability of position control is high.

An output shaft for transmitting the driving force of the motor to the outside is connected to a damper in a cooling and heating device of an automobile, and is mounted so as to be able to transmit the driving force in a direction for switching the direction of the damper. At least one of a damper for switching air, a damper for switching outlet, and a damper for adjusting a mixing ratio of cold air and hot air may be used.

In this configuration, the motor actuator according to the present invention is used as a motor actuator for controlling a damper of a vehicle cooling / heating device, and the damper of the vehicle cooling / heating device can be controlled.

According to the method of manufacturing a motor actuator of the present invention, a plurality of brushes and a first pattern portion including a plurality of first connection portions and forming a predetermined power distribution pattern are integrated. Forming a predetermined power distribution pattern including a step of manufacturing one conductive plate from one conductive plate, a plurality of external connection terminals for electrically connecting with other components, and a plurality of second connection portions. Manufacturing a second conductive plate in which the second conductive pattern and the second conductive pattern are integrated from one conductive plate; and forming the first conductive plate and the second conductive plate together with the second conductive plate.
Connecting the first conductive plate and the second conductive plate together with an insulating resin to form a conductive unit; and thereafter, connecting the first and second conductive plates to each other. The first of the second conductive plate
And cutting at least one of the second connecting portion,
A step of adapting the power distribution patterns of the first and second pattern portions to driving of a motor; and a step of attaching the conductive unit to the housing after the cutting step.

In the present invention, the brush and the first pattern portion or the external connection terminals and the second pattern portion are simultaneously manufactured from one conductive plate, so that the yield is improved and the manufacturing process is simplified. . A first conductive plate including a brush to be formed thin to have a predetermined elasticity and a second conductive plate including an external connection terminal to be formed thick to have a predetermined strength are formed separately. Therefore, by appropriately selecting the conductive plate to be manufactured, it is possible to easily form the conductive plate to a required thickness without any processing after the manufacturing. After the first conductive plate and the second conductive plate are connected and held,
Alternatively, since the second connection portion is cut to form a power distribution pattern unique to the motor, a power distribution pattern corresponding to various circuits can be formed only by changing the cut portion of the connection portion.

For example, the second conductive plate manufactured in a state where the six external connection terminals are connected can be independently connected to each other by cutting all the connection portions. If unnecessary portions are cut while being short-circuited one by one, it can be equivalent to three external connection terminals.

Further, since the conductive unit is attached to the housing in a state where the brush and the external connection terminal are integrally fixed, the attaching operation is simplified.

One of the first and second connecting portions has a claw portion that is folded back in a direction along an extending direction of the external connection terminal of the second conductive plate, and the first or second connecting portion has a claw portion. Either of the two connecting portions has an attachment portion held by the folded claw portion, and the claw portion is folded in a direction along the extending direction of the external connection terminal to hold the attachment portion. Then, the first conductive plate and the second conductive plate may be connected. By doing so, since the external connection terminal does not deviate from the axis, it is possible to prevent displacement.

The first and second connecting portions have holes and projections that engage with each other. And the second conductive plate. This further increases the positional accuracy of the external connection terminal.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing a motor actuator according to the embodiment. This motor actuator is for controlling the air conditioner of the vehicle, and includes a motor 20, a worm 30, a reduction gear 32,
34, an output gear 36, a pattern board 40, and a conductive unit 50 are housed therein.

The housing 10 is formed of a synthetic resin such as reinforced plastic, and has a case portion 12 in which the above-mentioned various members are attached, a cover portion 14 fitted and attached in a state where the case portion 12 is covered, Consists of

A motor mounting portion 12a for positioning and mounting the motor 20 is mounted on the case portion 12.
A rotation support shaft 12b of the reduction gears 32 and 34, a mounting projection 12c for positioning and fixing the conductive unit 50 by heat caulking, and a plurality of mounting portions 12d for mounting to the vehicle body with screws. An engagement protrusion 12e for engagement and attachment with the cover portion 14, and a rotation shaft 3 of the output gear 36;
Boss 16 for supporting one end of connector 8 and connector portion 18
a are formed. The connector portion 18a is integrated with a connector portion 18b provided on the cover portion 14 to constitute a jack for inserting a plug for making an electrical connection with the outside.

The cover portion 14 has the mounting portion 12
mounting part 14d which is mounted on the vehicle body by being superposed on the vehicle body d
And an engagement piece 14e that engages with the engagement protrusion 12e, and an output hole 14a that is formed so that the other end of the output shaft 38 projects outside.

Next, the motor 20 is connected to the terminals 28a and 28b.
Is connected to the power supply. A mounting plate 24 is provided on the output shaft 22 side, and the mounting plate 24 can be fitted into a mounting groove 26 formed by the motor mounting portion 12a. By doing so, the motor 2
Positioning and mounting of 0 are possible. A worm 30 is provided on the output shaft 22 of the motor 20.

The rotation of the worm 30 is transmitted to the output gear 36 via the reduction gears 32 and 34. Specifically, the reduction gear 32 is a large-diameter gear 32.
a and the small diameter gear 32b are integrated, and the reduction gear 3
Reference numeral 4 denotes an integrated large-diameter gear 34a and small-diameter gear 34b. The rotation of the worm 30 is controlled by the reduction gear 32.
Is transmitted to the large-diameter gear 32a, output from the small-diameter gear 32b, transmitted to the large-diameter gear 34a of the reduction gear 34, and output from the small-diameter gear 34b to the output gear 36. The reduction gears 32, 34 have holes 32c, 34c formed at the center of rotation.
By inserting the rotation support shaft 12b into the housing 4c, the housing 10 can be attached to the case portion 12. Thus, the rotation of the motor 20 is transmitted to the output gear 36.

The output gear 36 is formed integrally with the rotating shaft 38, and controls the rotation of the small diameter gear 34b to the rotating shaft 3.
8. Since a crank (not shown) is attached to the end of the rotating shaft 38, a notch 38a is formed so that the fitting can be engaged.

Next, the pattern substrate 40 is connected to the output gear 36.
The pattern is fixed to one side, and the pattern will be described later.

The conductive unit 50 includes a conductive plate 50a.
And a holding portion 50b made of an insulating resin. The mounting protrusion 12c is inserted into a hole of the mounting portion 58 provided integrally with the conductive plate 50a and the holding portion 50b so as to be fixed by heat caulking. It has become. Alternatively, the mounting portion 58 may be formed so that the mounting protrusion 12c can be press-fitted. Alternatively, an engaging portion (not shown) may be formed on the case portion 12 and an engaged portion (not shown) may be formed on the conductive unit 50 so that the two can be engaged and fixed. The engaging portion and the engaged portion have a known structure.

Further, the mounting portion 58 and the mounting protrusion 12c are designed in advance so that the conductive unit 50 is arranged at an appropriate position. That is, in the brush portions 61 to 66 of the conductive unit 50, the contact points with the pattern substrate 40 are arranged on a straight line passing through the center of rotation of the output gear 36. Therefore, by simply attaching the mounting portion 58 to the mounting protrusion 12c, the mounting portion 58 and the mounting protrusion 12c are provided at accurate positions so as to be arranged at an appropriate position of the conductive unit 50.

FIG. 2A shows the conductive plate 5 during manufacturing.
FIG. 2B is a front view of FIG.
(C) is a side view thereof. Note that the connecting portions 60a to 60f and 70a to 70f of the conductive plate 50a in FIG.
Some of the i are cut, the brushes 61 to 66 are adjusted in angle, and the conductive unit 50 is assembled to the case portion 12. At this time, the conductive plate 50a shown in FIG.
Is as shown in FIG.

The conductive plate 50a includes brushes 61 to 66 which are in contact with the pattern substrate 40, and a pair of power supply terminals 78 which are connected to the terminals 28a and 28b of the motor 20.
79, a pair of connection terminals 80 and 82 for connection to a resistor, a capacitor, and the like, and connector pins 71 to 71 for connection to the outside.
And a pattern section 56 for connecting these terminals to each other. The brushes 61 to 66, the power supply terminals 78 and 79, and the connection terminals 80 and 8 are formed by the flat pattern portion 56.
2. The connector pins 71 to 77 are formed upright.

As shown in FIG. 3, the conductive plate 50a is formed by connecting a first conductive plate 52 and a second conductive plate 54 which are separate members.

FIG. 3 shows the first conductive plate 52 and the second conductive plate 52.
5 is a plan view showing a conductive plate 54 of FIG. FIG.
4A is a plan view showing a connecting portion between the first conductive plate 52 and the second conductive plate 54, FIG. 4B is a side view thereof, and FIG. 4C is a view C in FIG. 4A. It is -C sectional drawing.

The first conductive plate 52 is manufactured by punching a single conductive plate such as a metal plate into a predetermined shape. Specifically, the brushes 61 to 66, the power supply terminals 78 and 7
9. The connection terminals 80 and 82 and the pattern portion 56a connected to these terminal groups are integrally formed from one conductive plate in a state where a part of the pattern portion 56a is short-circuited, and the brushes 61 to 66 and the like are formed. It is manufactured by bending the formation part.
At the end of the first conductive plate 52 on the side connected to the second conductive plate 54, connecting portions 100a to 100g are provided. In this embodiment, the first conductive plate 52 is made of a tin-plated brass plate.

The second conductive plate 54 is manufactured by punching a single conductive plate such as a metal plate into a predetermined shape. Specifically, the connector pins 71 to 77 and the pattern portion 56b connected to the connector pins 71 to 77 are members formed integrally from one conductive plate in a state where a part of the pattern portion 56b is short-circuited. And is formed thicker than the first conductive plate 52 (FIG. 4B).
reference). At the end of the second conductive plate 54 on the side connected to the first conductive plate 52, connecting portions 110a to 110a
10 g are provided. In this embodiment, the second conductive plate 54 is made of a phosphor bronze plate.

The first conductive plate 52 and the second conductive plate 54 are connected to connecting portions 100a and 100
0a, 100b and 110b, ..., 100g and 110g
After being caulked correspondingly, they are connected and fixed to each other by spot welding.

More specifically, the connecting portions 100a to 100g
Are formed so as to protrude from a part of the pattern portion 56a of the first conductive plate 52. In addition, connecting parts 110a to 11
0g is formed at the end of the pattern portion 56b of the second conductive plate 54, and as shown in FIG. 4 (A), a part thereof is narrow portions 112a to 112g.

The connecting portion 100f will be described as an example. The connecting portion 100f is a narrow portion 1 of the connecting portion 110f.
It is caulked while holding the 12f (see FIGS. 4 (A) to 4 (C)).

As described above, the first conductive plate 52 and the second conductive plate 54 are formed by punching out one conductive plate, respectively, and these are connected and fixed to form the conductive plate 5.
By manufacturing Oa, a process of individually manufacturing brushes, power supply terminals, connector portions, and the like, and then connecting them by soldering or the like can be omitted.
Since 6 and the like are manufactured at the same time, the yield is improved without waste of materials. Furthermore, the manufacturing process is simplified by performing the punching and bending processes at the same time.

Further, by forming the conductive plate 50a with the first conductive plate 52 and the second conductive plate 54, which are separate members, each terminal can be easily made to have a required thickness. That is, the brushes 61 to 66
The connector pins 71 to 77 need to be thick in order to prevent deformation at the time of fitting with the mating connector, while the connector pins 71 to 77 need to be thin to have elasticity as a brush. In the present embodiment, the first conductive plate 52 and the second conductive plate 54 are each manufactured from a conductive plate having a predetermined thickness, so that the second conductive plate 54 having the connector pins 71 to 77 is It is formed thicker than the first conductive plate 52 having 61 to 66, and thus a predetermined thickness can be easily secured by selecting a conductive plate without processing such as rib formation. it can.

The conductive plate 50a is shown in FIGS.
As shown in (C), a part of the pattern portion 56 is formed in a short-circuited state, and the brushes 61 to 66, the connector pins 71 to 77, and the power supply terminals 78 and 79 are electrically connected to each other. It is in a state of being left.

That is, in the pattern portion 56, the connecting portions 60a to 60f and 70a
70i through 70i, the connecting portions 60a-60f and 70a-7
0i is disconnected as needed (details will be described later).

Then, such a conductive plate 50a
Are held by the holding unit 50b as shown in FIG. Specifically, in the region of the pattern portion 56, the holding portion 50b is formed so that the brushes 61 to 66 and the connector pins 71 to 77 do not fall apart even if all of the connecting portions 60a to 60f and 70a to 70i are cut. Have been. Therefore, if the brushes 61 to 66 and the connector pins 71 to 77 do not fall apart, the holding portion 50b
The shape of is not limited. However, it is preferable that the holding portion 50b is provided so as to avoid the connecting portions 60a to 60f and 70a to 70i, and that the connecting portions 60a to 60f and 70a to 70i can be cut as necessary.

That is, the connection portions 60a to 60f and 70a to 70f of the common pattern portion 56 applicable to various motors.
By appropriately cutting 70i, one of the brushes 61 to 66 is electrically connected to one of the connector pins 71 to 77 and one of the power supply terminals 78 and 79, thereby forming a motor-specific pattern portion. It will be.

The connecting portions 60a to 60f and 7
It is preferable that the cutting of Oa to 70i can be performed before or after the conductive unit 50 is attached to the housing 10. When cutting the connecting portions 60a to 60f and 70a to 70i after the conductive unit 50 is attached to the housing 10, a laser is used.
It is desirable that a through hole (not shown) is formed in the case portion 12 so as not to damage the laser beam so that the laser beam can pass through.

FIG. 5 is a plan view showing a first conductive plate 610 and a second conductive plate 620 constituting a conductive plate 600a which is a modification of the conductive plate 50a of the motor actuator according to the present embodiment. Similar to conductive plate 50a of the motor actuator according to the present embodiment, conductive plate 600a is formed by connecting and fixing separate first conductive plate 610 and second conductive plate 620.

The first conductive plate 610 includes the brush 60
1 to 606, the connection terminal 640 and the pattern portion 630a fixedly connected to these terminal groups are integrally formed of one conductive plate in a short-circuited state.

The second conductive plate 620 includes connector pins 651 to 657, power supply terminals 644, 646, connection terminals 642, and the pattern portion 63 connected to these terminal groups.
0b is integrally formed from one conductive plate in a short-circuited state.

That is, the conductive plate 5 of the present embodiment
0a and the conductive plate 600a of the modified example are that power supply terminals 644 and 646 for connection to a motor are provided on a second conductive plate 620 including connector pins 651 to 657. Another difference is that one of a pair of connection terminals 640 and 642 connected to a capacitor or the like is provided on the first conductive plate 610, and the other is provided on the second conductive plate 620.

The first conductive plate 610 and the second conductive plate 620 are manufactured by punching a single conductive plate such as a metal plate into a predetermined shape and bending necessary portions. Also, the second conductive plate 620
Is formed thicker than the first conductive plate 610. The first conductive plate 610 is made of, for example, a tin-plated brass plate, and the second conductive plate 620 is made of, for example, a phosphor bronze plate.

Then, the first conductive plate 610 and the second conductive plate
And the conductive plate 620 of the
60a to 660g, 670a to 670g are connected and fixed by spot welding after being caulked,
The conductive plate 600a is formed. The shape of the connecting portion and the connecting and fixing method are the same as those in the case of the conductive plate 50a of the above-described embodiment, and thus detailed description is omitted.

After the conductive plate 600a is held by the holding portion, a short-circuit portion unnecessary for electrical connection is appropriately cut to form a motor-specific pattern portion. Same as 50a.

As described above, the first conductive plate 610 including the brushes 601 to 606 that need to be thinned to have elasticity as a brush, and the predetermined thickness for eliminating deformation at the time of fitting with the mating connector. By manufacturing the second conductive plate 620 including the connector pins 651 to 657, which require the above, separately from the conductive plate having a predetermined thickness, the predetermined thickness can be easily secured.

That is, the brushes 601 to 606 (61 to 66 in the above-described embodiment) and the connector pins 6
51 to 657 (71 to 77) respectively correspond to the first conductive plate 610 (52) or the second conductive plate 6
20 (54), the above-described effects can be achieved. Power supply terminals 644, 646 (7
8, 79), connection terminals 640, 642 (80, 82).
May be provided on either side of the first or second conductive plate as necessary, or each of the pair of power supply terminals and each of the pair of connection terminals may be divided so that the first and second conductive plates are separated. It may be provided on a plate.

Next, FIG. 6 shows a schematic diagram in which the vehicle air conditioner is controlled by the motor actuator described above. In the figure, motor actuators 1, 2, and 3 are driven according to the operation of the controller unit 90. The motor actuator 1 includes a duct 9 for introducing inside air.
It drives a damper 92 for switching between 2a and an outside air introduction duct 92b. The motor actuator 2 drives dampers 94 and 96 for switching the outlet. Specifically, the damper 94
The duct 94a leading to the defroster and the duct 94b leading to the outlet in the vehicle are switched.
Can be switched by a damper 96 between a duct 96a reaching the outlet near the dashboard and a duct 96b reaching the outlet provided below the feet in the vehicle. Further, the motor actuator 3 drives a damper 98 for adjusting a mixing ratio of cold air and hot air, and opens and closes a heater core 98a. In order to swing the dampers 92 to 98 by the respective motor actuators 1, 2, and 3, it is necessary to change the rotational motion into a swing motion, but the mechanism for this is known and is not directly related to the present invention. Therefore, the description is omitted.

Next, circuits for driving such motor actuators 1, 2, and 3 will be described with reference to FIGS.
It is shown in (C). 7A is a circuit for driving the motor actuator 1, FIG. 7B is a circuit for driving the motor actuator 2, and FIG. 7C is a circuit for driving the motor actuator 3. And FIG.
7A to 7C, the pattern substrates 42, 4
Reference numerals 4 and 46 denote specific patterns of the pattern substrate 40 of FIG.

First, the motor actuator 1 will be described.

In FIG. 7A, the pattern of the pattern substrate 42 is formed such that the insulating portions 101, 1 are concentrically arranged on the disc-shaped conductor portion 42a at positions shifted by 180 degrees on different circles.
02 are provided. The conductors 42a are provided with brushes 61 to 66 (see FIGS.
7 (C) slides, and the contact points between the two are indicated by contact points 111 to 116 in FIG. 7 (A). Note that the brush and the contact are the brush 61 and the contact 111, and the brush 62 and the contact 11
2,..., The brush 66 and the contact point 116 are in a correspondence relationship.

The contacts 111 and 112 are connected to the insulating section 1
01 on a first circumference having contact points 113 and 1
Reference numeral 14 slides on the second circumference having the insulating portion 102, and the contacts 115 and 116 always slide on the conductor portion 42a in a region having no insulating portion. Contact 1
11 and 112 are short-circuited and connected to the switching contact 121 of the switch 120, and the contacts 113 and 114 are short-circuited and connected to the switching contact 122 of the switch 120, switched by the switch 120 and switched to the switching contact 121 or 12
One of the two is grounded. Then, the contacts 115 and 116 are short-circuited and connected to one terminal 28b (see FIG. 1) of the motor 20, and the other terminal 28a is connected to a power supply.

Such a circuit is, specifically, the connecting portions 60 a to 60 f and 70 a to 70
It is formed by cutting a predetermined portion of i. FIG. 8 is a view showing a conductive unit 50 in which a predetermined portion of the connecting portion is cut and forms a part of the circuit of FIG. 7A.

In FIG. 8, what is cut off is the connecting portion 6.
0b, 60d, 70b, 70d, 70f, 70i. By doing so, the conduction state is as follows.

First, the brushes 61 and 62 (contacts 111 and 112) are short-circuited at the connecting portions 60a and 70a, and are connected from the connector pins 71 and 72 to a switching contact 121 (not shown) ( FIG. 7A).

Brushes 63 and 64 (contacts 113 and 11)
4) is short-circuited at the connecting portions 60c and 70c, and is switched from the connector pins 73 and 74 to the switching contact 122 (not shown).
(See FIG. 7A). The brushes 62 and 63 are electrically disconnected from each other by cutting the connecting portions 60b and 70b.

Further, the brushes 65 and 66 (contact 115
And 116) are short-circuited at the connecting portions 60e and 70e, and are connected from the power supply terminal 79 to one terminal 28b of the motor 20 (not shown) (see FIG. 1). The brushes 64 and 65 are electrically disconnected from each other by cutting the connecting portions 60d and 70d.

The other terminal 28a (see FIG. 1) of the motor 20 is connected to a power supply (not shown) from a power supply terminal 78 via a connector pin 77. The connector pins 76 and 77 are connected to the connecting portions 70f and 7f.
When 0i is disconnected, the electrical continuity is cut off.

Next, the operation of the motor actuator 1 will be described with reference to FIG. In the state shown in the drawing, the switch 120 grounds the switching contact 121, but since the contacts 111 and 112 are on the insulating portion 101, the connection between the contacts 111 and 112 and the contacts 115 and 116 is cut off. Therefore, the motor 20 does not rotate because no current flows. Then, the switch 120 is switched to switch the switching contact 1
When the contact 22 is grounded, conduction is established between the contacts 111 and 112 and the contacts 115 and 116 at the conductor 42a,
The motor 20 rotates. And contacts 112 and 113
However, when it comes to the insulating part 102, the circuit is cut off at the insulating part 102, and the rotation of the motor 20 stops.

In this way, the switching of the switch 120 causes the motor 20 to move at two positions, that is, when the contacts 111 and 112 come on the insulating portion 101 and when the contacts 113 and 114 come on the insulating portion 102. The rotation will stop.

Here, the pattern substrate 42 is a specific example of the pattern substrate 40 shown in FIG. 1, and is attached to one surface of the output gear 36 which rotates about the rotation shaft 38. Therefore, since the pattern substrate 42 rotates in accordance with the rotation of the rotating shaft 38, the two positions where the motor 20 stops correspond to the rotating positions of the rotating shaft 38. That is, by operating the switch 120, the rotating shaft 38 can be stopped at two predetermined positions.

In this way, the motor actuator 1 shown in FIG. 6 stops at two positions, so that the damper 92 can be arranged at the position where the duct 92a is closed or the duct 92b is closed.

Next, the motor actuator 2 will be described.

In FIG. 7B, the pattern of the pattern substrate 44 is such that insulating portions 201 to 205 are respectively provided at disc-shaped conductor portions 44 a at positions shifted by a predetermined angle on different concentric circles. It is. Then, the conductor portion 44a
In FIG. 7B, brushes 61 to 66 (see FIGS. 2A to 2C) slide, and points of contact between the brushes are indicated by contacts 211 to 216 in FIG. 7B. It should be noted that the brush and the contact have a correspondence relationship of the brush 61 and the contact 211, the brush 62 and the contact 212,..., The brush 66 and the contact 216.

The contact 211 slides on the first circumference having the insulating portion 201, the contact 212 slides on the second circumference having the insulating portion 202, and the contact 213 contacts the insulating portion 20.
3, the contact 214 slides on the fourth circumference having the insulating portion 204, and the contact 215 slides on the fifth circumference having the insulating portion 205. Contact 216
Is designed to always slide on the conductor portion 44a in a region having no insulating portion.

The contact 211 is connected to the switching contact 221 of the switch 220, the contact 212 is connected to the switching contact 222, the contact 213 is connected to the switching contact 223, the contact 214 is connected to the switching contact 224, and the contact 215 Is connected to a switching contact 225 and is switched by a switch 220 so that one of the switching contacts 221 to 225 is grounded. The contact 216 is connected to one terminal 28b (see FIG. 1) of the motor 20,
The other terminal 28a is connected to a power supply.

This circuit is, specifically, a conductive unit 5
0 is formed by cutting predetermined portions of the connecting portions 60a to 60f and 70a to 70i. And FIG.
FIG. 8 is a diagram showing a conductive unit 50 in which a predetermined portion of the connecting portion is cut off and forms a part of the circuit of FIG. 7B.

In FIG. 9, all the connecting parts except the connecting parts 70g and 70h are cut off. And FIG. 7 (B)
Referring to FIG. 9, the conductive state will be described with reference to FIG.
21, the brush 62 (contact 212) is connected from the connector pin 72 to the switching contact 222, and the brush 63 (contact 212) is connected.
(Contact 213) is connected from the connector pin 73 to the switching contact 223.
The brush 64 (contact 214) is connected from the connector pin 74 to the switching contact 224, and the brush 65 (contact 215) is connected from the connector pin 75 to the switching contact 225. Each of the brushes 61 to 66 is cut off from each other by cutting off the connecting portion.

Further, the brush 66 (contact 216) is connected to one terminal 2 of the motor 20 (not shown) from the power supply terminal 79.
8b (see FIG. 1).

The other terminal 28a (see FIG. 1) of the motor 20 is connected to a power supply (not shown) from a power supply terminal 78 via a connector pin 77. The power supply terminals 79 and 78 are electrically disconnected from each other when the connecting portion 70g is disconnected, and the connector pins 76 and 77 are electrically disconnected from each other when the connecting portion 70i is disconnected. Is blocked.

Next, the operation of the motor actuator 2 will be described with reference to FIG. In the state shown in the figure, the switch 220 has the switching contact 222 grounded, but since the contact 212 is on the insulating part 202, the connection between the contact 212 and the contact 216 is cut off, and no current flows, so that the motor does not flow. 20 does not rotate.

When the switch 220 is switched to ground the switching contact 221, for example, the contact between the contact 211 and the contact 216 is conducted by the conductor 44 a, and the motor 20 rotates. Then, the contact 211 is
When it comes to the top, the circuit is cut off by this insulating part 201,
The rotation of the motor 20 stops.

Similarly, when the switching contact 223 is grounded,
At the conductor portion 44a, conduction is established between the contact 213 and the contact 216, and the motor 20 rotates. And the contact 213
However, when it comes to the insulating portion 203, the circuit is cut off at the insulating portion 203, and the rotation of the motor 20 stops. Also,
When the switching contact 224 is grounded, conduction is established between the contact 214 and the contact 216 at the conductor 44a, and the motor 20 rotates. Then, when the contact 214 comes on the insulating part 204, the circuit is cut off at the insulating part 204, and the rotation of the motor 20 stops. Further, when the switching contact 225 is grounded, the contact 215 and the contact 216 are
Is conducted, and the motor 20 rotates. Then, when the contact 215 comes on the insulating section 205, the insulating section 20
At 5, the circuit is interrupted, and the rotation of the motor 20 stops.

Thus, by switching the switch 220, the case where the contact 211 comes on the insulating part 201, the case where the contact 212 comes on the insulating part 202, the case where the contact 213 comes on the insulating part 203, The contact 214 is the insulating part 204
The rotation of the motor 20 is stopped at five positions, that is, when it comes to the top and when the contact 215 comes to the insulating part 205.

In this way, the motor actuator 2 shown in FIG. 6 stops at five positions, drives the dampers 94 and 96 by a link mechanism (not shown), and
The opening and closing of a, 94b, 96a, and 96b can be adjusted.

Next, the motor actuator 3 will be described.

In FIG. 7C, the pattern of the pattern substrate 46 includes a conductor portion 301 formed in a ring shape near the outer peripheral end and a conductor portion 3 formed concentrically and with a small diameter.
03 are electrically connected by an arc-shaped resistance portion 302. More specifically, a resistance portion 302 is provided and connected between a protruding portion 301a protruding in the inner circumferential direction of the conductor portion 301 and a protruding portion 303a protruding in the outer circumferential direction of the conductor portion 303. Here, the resistance portion 302 has a higher resistance value than the conductor portions 301 and 303 and serves as a resistor. The resistance portion 302 is formed in an arc shape and connected between the protruding portions 301a and 303a at both ends in the longitudinal direction.

Then, brushes 61 to 66 (FIG. 2A) are applied to any of the conductors 301 and 303 or the resistor 302.
2 to (C) in FIG. 7), and the contact point between the two slides.
(C) is indicated by contacts 311 to 316. It should be noted that the brush and the contact correspond to the brush 61 and the contact 311, the brush 62 and the contact 312,..., The brush 66 and the contact 316.

The contacts 311 and 312 are connected to the conductor 3
01, the contacts 313 and 314 slide on the circumference having the resistor 302, and the contacts 315 and 316 slide on the conductor 303.

Here, since the resistance portion 302 is formed in an arc shape and connected between the conductor portions 301 and 303 at both ends in the longitudinal direction, the contacts 311 and 312 and the contacts 313 and 314 are connected to each other. , Decreases as the contacts 313 and 314 approach the protrusion 301a, and increases as the contacts 313 and 314 approach the protrusion 303a.

The contacts 311 and 312 are short-circuited and connected to the terminal 321 of the control unit 320, the contacts 313 and 314 are short-circuited and connected to the terminal 322 of the control unit 320, and the contacts 315 and 316 are short-circuited. Control part 3
20 terminals 323.

In the control section 320, the terminal 321 and the terminal 32
3 and a terminal 321
The voltage between the terminal and the terminal 322 is detected and stored. Then, based on the detected voltage, the rotation position of the output gear 36 (see FIG. 1) provided with the pattern substrate 46 can be grasped, and the rotation position of the rotation shaft 38 can be grasped.

That is, as described above, the positions of the contacts 313 and 314 depend on the positions of the contacts 313 and 314.
And the resistance value between the contacts 311 and 312 changes, and the voltage appearing between them changes. In short, the voltage dividing circuit is formed by the combination of the pattern substrate 46 and the brushes 61 to 66. If this is considered in reverse, the rotational position of the rotary shaft 38 can be detected from the voltage. Further, the open / close state of the damper 98 (see FIG. 6) is determined in accordance with the rotation position of the rotation shaft 38 thus detected.

Therefore, the control section 320 determines the open / closed state of the damper 98 corresponding to the temperature set by the controller section 90 (see FIG. 6), and
8, the positions of the contacts 313 and 314 corresponding thereto are determined, and the voltage to appear between the contacts 311 and 312 and the contacts 313 and 314 is calculated and set correspondingly.

The control unit 320 drives the motor 20 by applying a predetermined voltage between the terminals 324 and 325 in order to rotate the pattern substrate 46 in a direction in which this voltage appears. Thus, the contacts 311 and 312 and the contact 313
And 314, and the voltage set corresponding to the open / close state of the damper 98 matches, the supply of power is stopped and the motor 20 is stopped. The driving of the damper 98 is performed as described above.

This circuit is also connected to the connecting portions 60a-60f, 70a-7
0i is formed by cutting a predetermined portion. And
FIG. 10 is a diagram showing the conductive unit 50 in which a predetermined portion of the connecting portion is cut and forms a part of the circuit of FIG. 7C.

In FIG. 10, the cut portions are the connecting portions 60b, 60d, 60e, 70b, 70d, 70e, 7
0f, 70h, and 70i. By doing so, the conduction state is as follows.

First, the brushes 61 and 62 (contact points 311 and 312) are short-circuited at the connecting portions 60a and 70a, and are connected to the terminal 321 from the connector pins 71 and 72 (FIG. 7 ( C)).

Brushes 63 and 64 (contacts 313 and 31)
4) is short-circuited at the connecting portions 60c and 70c, and is connected to the terminal 322 from the connector pins 73 and 74 (see FIG. 7C). The brush 62
And 63 are electrically disconnected by cutting the connecting portions 60b and 70b.

Further, the brushes 65 and 66 (contacts 315)
And 316) are short-circuited at the connecting portion 60f, and the terminal 3
23 (see FIG. 7C). The brushes 64 and 65 are electrically disconnected from each other by cutting the connecting portions 60d and 70d.

The power supply terminal 78 and the connector pin 77
And the power supply terminal 79 and the connector pin 76 are electrically connected, and the power supply terminals 78 and 79 are connected to the connecting portions 70f and 70f.
When i is disconnected, it is electrically disconnected. Further, the connection between the connector pins 75 and 76 is cut off at the connection portion 60e, so that electrical continuity is cut off.

Therefore, the terminal 28b of the motor 20 (not shown) is connected from the power supply terminal 79 to one of the terminals 324 and 325 via the connector pin 76, and the terminal 28a of the motor 20 is connected from the power supply terminal 78 to the terminal via the connector pin 77. 324 and 325 are connected.

Next, a modified example of the position detecting mechanism using the motor actuator according to the present embodiment will be described.

FIG. 11 shows a circuit for driving the motor actuator 3 shown in FIG. Pattern substrate 48
Shows a specific pattern of the pattern substrate 40 of FIG.

The pattern substrate 48 includes one common conductor portion 402 and a plurality of individual conductor portions, and includes a damper 98.
An encoder pattern 49 for detecting the position and outputting a signal is formed.

In the encoder pattern 49 shown in FIG. 11, the common conductor 402 is provided in a ring shape near the inner peripheral end. The individual conductors 404a and 404b are concentric with the common conductor 402 but are arranged on a large diameter circumference. External conductor portions 406a and 406b are arranged outside the external conductor portions 408a and 408b.
b, and the individual conductor portions 410a and 410
b is arranged. As shown in FIG. 11, the common conductor 402 and the plurality of individual conductors 404a to 410b are arranged in a state where at least a part of the inner or outer arc portion is in contact with another individual conductor, It is integrally formed as a whole.

Then, the common conductor section 402 and the individual conductor section 4
The brushes 61 to 65 (see FIGS. 2A to 2C) slide on the surfaces 04a to 410b, and the contact points between the brushes 61 to 65 are set to 411 to 41.
Indicated by 5. The brush 66 is not used in this circuit. The brush and the contact have a correspondence relationship of the brush 61 and the contact 411, the brush 62 and the contact 412,..., The brush 65 and the contact 415.

The contact 411 slides on the circumference where the common conductor 402 is provided. That is, the common conductor 40
2 is always in contact with the brush 61 and is connected to a plus potential, that is, an H level via a terminal 521.

The contact 412 slides on the circumference having the individual conductor portions 404a and 404b, the contact 413 slides on the circumference having the individual conductor portions 406a and 406b,
The contact 414 slides on the circumference having the individual conductor portions 408a and 408b, and the contact 415 slides on the circumference having the individual conductor portions 410a and 410b.

Each of the individual conductor portions 404a to 410b
S. At positions 1 to 5, corresponding contacts 412 to 41
Contact 5 Then, the contact becomes H level.

In this embodiment, control of position detection is performed by the microcomputer 500. The microcomputer 500 includes a central processing unit 502, a memory 504 including a ROM and a RAM, and an input / output interface 506. Input terminals 522 to 525 of the input / output interface 506 are connected to the respective contacts 412 to 415.

The mode specifying means 508 is connected to the input / output interface 506. The output end of the input / output interface 506 is connected to the drive circuit 510 of the motor 20. The drive circuit 510 receives a command signal for supporting forward rotation, reverse rotation or stop from the microcomputer 500, and causes the motor 20 to rotate forward or backward or stop the motor 20 according to the command signal. It is.

Next, the operation of the position detecting mechanism thus configured will be described.

First, when a predetermined mode is input to the mode specifying means 508, a corresponding signal is read from a table stored in the ROM in the memory 504 of the microcomputer 500. The ROM stores the table shown in FIG.

Further, the current position is stored in the RAM, and this signal is read. And CPU
Reference numeral 502 compares the signal of the predetermined mode read from the ROM with the signal of the current position read from the RAM. The CPU 502 outputs a forward rotation or reverse rotation command signal to the drive circuit 510 according to the result of the comparison.

Driving circuit 510 outputs a current in accordance with the command signal to rotate motor 20.

As the motor 20 rotates, FIG.
The output gear 36 shown in FIG. 4 rotates, and the pattern substrate 48 rotates accordingly, and the contact 4
The positions of 11 to 415 change. Then, the microcomputer 500 detects the positions of the contacts 411 to 415 based on the input signal from the encoder pattern 49. That is, the input signals from the input terminals 522 to 525 connected to the contacts 411 to 415 are at the H level (2
1) in binary code or L level (0 in binary code)
Are respectively detected.

The signals indicating the positions of the contact points 411 to 415 are compared with the signal of the designated predetermined mode.
The motor 20 is stopped at the position where the two coincide. The signal of the current position is stored in the RAM of the memory 504.
In this way, the damper 98 is driven, and the position detection of the eleven places set in the predetermined mode is performed with the necessary minimum of four bits.

This circuit is also described in detail in the conductive unit 50.
Are formed by cutting predetermined portions of the connecting portions 60a to 60f and 70a to 70i. And FIG.
FIG. 12 is a diagram illustrating a conductive unit 50 in which a predetermined portion of a connecting portion is cut and forms a part of the circuit in FIG. 11.

In FIG. 13, all the connecting parts other than 70 g are cut. 13 with reference to FIG.
The conduction state will be described with reference to FIG.
1) is connected from the connector pin 71 to the terminal 521 and is connected to a power supply. The brush 62 (contact 412) is connected from the connector pin 72 to the input terminal 522,
3 (contact 413) is connected from the connector pin 73 to the input terminal 52.
3, the brush 64 (contact 414) is connected from the connector pin 74 to the input terminal 524, and the brush 65 (contact 415) is connected from the connector pin 75 to the input terminal 525. Each of the brushes 61 to 65 is cut off from each other by cutting the connecting portion, and the brush 66 is completely disconnected from the electrical connection by cutting the connecting portions 60f and 70h, and is used in this circuit. There is no terminal.

Further, the connector pin 76 is connected to the terminal 526.
And the connector pins 77 are connected to the terminals 527, respectively, and are connected to the motor 20 from the power supply terminals 78 and 79. Note that the power supply terminals 78 and 79 are electrically disconnected from each other when the connecting portion 70i is cut off.
The electrical conduction between the connector pins 76 and 77 is cut off when the connecting portion 70f is cut.

As described above, according to the embodiment shown in FIGS. 11 to 13, the connecting portion 6 between the position detecting encoder pattern 49 provided on the pattern substrate 48 and the conductive unit 50 is provided.
By selecting the cutting positions 0a to 60f and 70a to 70i, a very simple 4-bit signal position control mechanism can be configured, and a low-cost motor actuator can be obtained. Moreover, encoder pattern 4
9, the individual conductors are slid repeatedly with the brushes 61 to 65. Since the individual conductors are integrally formed, the individual conductors are easy to form, have high strength, and are capable of position control. High reliability.

Next, FIGS. 14A to 14C are diagrams showing an example of a process for manufacturing the conductive unit 50 shown in FIG. First, as shown in FIG. 14A, a first conductive plate 52 is formed from one conductive plate. More specifically, the connection terminals 80 and 82, the power supply terminal 78, and the like are bent at the same time as the conductive plate is punched by a press die.
However, the brushes 61 to 66 (see FIG. 3) are bent at right angles after being raised as temporary shapes, unlike the final shape as shown in FIG. The second conductive plate 54 shown in FIG. 3 is formed from another conductive plate by a press die. Note that the first conductive plate
And the second conductive plates 52 and 54 may be formed simultaneously.

Next, as shown in FIG. 14B, the first and second conductive plates 52 and 54 are connected to obtain a conductive plate 50a. The connection method is shown in FIGS.
It is shown in (C).

Then, as shown in FIG. 14C, a predetermined portion of the conductive plate 50a is solidified with an insulating resin to form a holding portion 50b. Thereafter, the connecting portions 60a to 60f and 70a to 70i of the conductive plate 50a are pressed.
(See FIG. 2). At the same time, a final bending process for adjusting the shapes of the brushes 61 to 66 is performed. Thus, the conductive unit 50 can be obtained.

According to this manufacturing process, the brushes 61 to 66
Since the adjustment of the shape of the brush is the last, the brush 6
Deformation of 1 to 66 can be prevented. Then, the heights of the brushes 61 to 66 can be made constant, and the contact pressure to the pattern substrate 40 (see FIG. 1) can be made constant.

Next, FIG. 15 is a view showing a conductive plate in the course of manufacture according to another embodiment. Conductive plate 70
Numeral 0 is formed by connecting a first conductive plate 702 and a second conductive plate 704, which are separate members. A connecting portion between the connecting portion 712 of the first conductive plate 702 and the connecting portion 714 of the second conductive plate 704 is enlarged in FIG.

FIGS. 16A to 16C are a plan view, a side view, and a front view of the connecting portion 712 of the first conductive plate 702. FIG. FIG. 17A and FIG.
FIG. 7B shows a plan view and a side view of the second conductive plate 704.

The connecting portion 712 of the first conductive plate 702
Has two claw portions 712b formed from the tip of the fixing portion 712a, and an engaging hole 712c is formed in the fixing portion 712a. The claw portion 712b is raised from the fixing portion 712a, and has a bent shape so as to be easily folded.

In addition, the first conductive plate 7 shown in FIG.
02 has a plurality of brushes 720 similarly to the conductive plate 52 shown in FIG. The brush 720 includes the temporary connecting portion 72.
They are connected by two. A guide hole 722a is formed in the temporary connection portion 722, and the guide hole 722a
Are used for positioning in the manufacturing process and then cut. Other configurations and manufacturing methods of the first conductive plate 702 are the same as those of the conductive plate 52 shown in FIG.

Next, the connecting portion 714 of the second conductive plate 704 is formed by forming the engaging projection 714b on the mounting portion 714a. The engagement projection 714b is adapted to engage with the engagement hole 712c. The second conductive plate 704 illustrated in FIG. 15 has a plurality of connector pins 730, similarly to the conductive plate 54 illustrated in FIG. The connector pin 730 extends from the mounting portion 714a. Here, the connector pin 730 is provided with two claw portions 712 b provided on the connection portion 712 of the first conductive plate 702.
The width can be arranged between. On the other hand, the mounting portion 714a has a width larger than the interval between the two claw portions 712b. Therefore, the mounting portion 714a
The hook 712b is adapted to be caught.

Further, the connector pin 730 is
32. A guide hole 732a is formed in the temporary connection portion 732, and the guide hole 732a is
a is used for positioning in the manufacturing process and then cut. Other configurations and manufacturing methods of the second conductive plate 704 are the same as those of the conductive plate 54 shown in FIG.

FIGS. 18A and 18B are views showing a process of connecting the first and second conductive plates 702 and 704. FIG.

First, the first conductive plate 702 is positioned by inserting a jig (not shown) into the guide hole 722a (see FIG. 15). Next, as shown in FIG. 18A, the second conductive plate 704 is positioned by inserting a jig 740 into the guide hole 732a. For more information,
First, the second conductive plate 704 is arranged so that the engagement protrusion 714b of the second conductive plate 704 is arranged directly above the engagement hole 712c of the first conductive plate 702. Then, the engaging protrusion 714b is fitted into the engaging hole 712c.

Next, as shown in FIG. 18 (B), the claws 712b of the first conductive plate 702 are caulked, and electric heat is further caulked. That is, the claw portion 712b is folded back so that the mounting portion 714a is fixed to the fixing portion 712a and the claw portion 712.
b, the connecting portions 712 and 714 are connected. Here, since the claw portion 712b is inclined in the folding direction, the crimping can be performed by the vertical movement of the mold. Further, the claw portion 712b is connected to the connector pin 730.
Is folded in the direction along the longitudinal direction of Therefore,
When the claws 712b are folded back, the connector pins 730 are not displaced in the direction intersecting the longitudinal direction, so that there is no displacement.

Thus, the first and second conductive plates 7
02 and 704 are connected, and a conductive plate 700 can be obtained. Thereafter, the temporary connection portions 722 and 732 are cut, and the electrical connection portion is cut like the conductive plate 50a shown in FIG. 2, and the inclination angle of the brush 720 is adjusted.

According to the present embodiment, since the second conductive plate 704 can be mounted on the first conductive plate 702, the manufacturing method is suitable for automation.

The present invention is not limited to the above-described embodiment, and various modifications can be made. For example,
INDUSTRIAL APPLICABILITY The motor actuator according to the present invention is not limited to air conditioner control of a vehicle, and can be used for various devices to perform position control. The pattern substrate is not limited to the output gear, and may be fixed to, for example, one surface of the reduction gear.

[0148]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a motor actuator according to an embodiment of the present invention.

2 (A) is an enlarged plan view of a conductive plate before cutting a connecting portion and adjusting a brush angle, FIG. 2 (B) is a front view thereof, and FIG. 2 (C) is a side view thereof. .

FIG. 3 is a plan view showing a first conductive plate and a second conductive plate constituting the conductive plate in FIG. 1;

4 (A) is a plan view showing a portion where the first conductive plate and the second conductive plate are attached, FIG. 4 (B) is a side view thereof, and FIG. 4 (C) is FIG. 4 ( It is CC sectional drawing in A).

FIG. 5 is a plan view showing a modified example of a first conductive plate and a second conductive plate constituting a conductive plate.

FIG. 6 is a schematic diagram showing control of a vehicle air conditioner by a motor actuator.

7 (A) to 7 (C) are diagrams showing circuits for driving the motor actuator of FIG. 6;

FIG. 8 is a view showing a conductive unit in which a predetermined portion of a connecting portion is cut and forms a part of the circuit of FIG. 7A.

FIG. 9 is a view showing a conductive unit in which a predetermined portion of a connecting portion is cut and forms a part of the circuit of FIG. 7B.

FIG. 10 is a diagram showing a conductive unit which is a part of the circuit of FIG. 7C in which a predetermined portion of a connecting portion is cut.

FIG. 11 is a diagram showing a modified example of a circuit for driving the motor actuator of FIG. 6;

FIG. 12 is a chart showing a table stored in a ROM.

FIG. 13 is a view showing a conductive unit in which a predetermined portion of a connecting portion is cut and forms a part of the circuit of FIG. 11;

FIGS. 14A to 14C are diagrams illustrating an example of a process for manufacturing the conductive unit illustrated in FIG. 1;

FIG. 15 is a view showing a conductive plate in the course of manufacture according to another embodiment.

FIGS. 16A to 16C are a plan view, a side view, and a front view of a connecting portion of the first conductive plate.

17A and 17B are a plan view and a side view, respectively, of a second conductive plate.

FIG. 18A and FIG. 18B are views showing a step of connecting the first and second conductive plates.

[Explanation of symbols]

1, 2, 3 Motor actuator 10 Housing 20 Motor 36 Output gear (gear) 40, 42, 44, 48 Pattern board (pattern conductor) 50 Conductive unit 50a, 600a Conductive plate 50b Fixing part 52, 610 First conductive plate 54 , 620 Second conductive plate 61-66, 601-606 Brush part (contact terminal) 71-77, 651-657 Connector pin part (external connection terminal) 78, 79, 644, 646 Power supply part (power supply terminal) 60a- 60f, 70a-70i Connecting part (short part)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-20958 (JP, A) JP-A-53-29582 (JP, A) JP-A-3-183338 (JP, A) 53130 (JP, U) Japanese Utility Model No. 5-41374 (JP, U) Japanese Utility Model Application No. Sho 62-33691 (JP, U) Japanese Utility Model Application No. 6-43979 (JP, U) Japanese Utility Model Utility Model No. 61-55302 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02K 11/00 H01H 19/00

Claims (11)

(57) [Claims] 1. A gear rotating by a motor, a pattern conductor provided on one surface of the gear and rotating together with the gear, and a conductive unit, wherein the conductive units are connected to each other to form an insulating resin. A first and a second conductive plate solidified by the first conductive plate, wherein the first conductive plate includes a plurality of brushes sliding on the pattern conductor and a plurality of first connecting portions, and the first predetermined portion includes a plurality of first connecting portions. A first pattern portion forming a power distribution pattern, wherein the second conductive plate includes a plurality of external connection terminals for electrically connecting to other components and a plurality of second connection portions. A second pattern portion that forms a second predetermined power distribution pattern in the conductive unit, wherein the conductive unit has a pair of power supply terminals formed by the first and second conductive plates, Of the first and second pattern portions Conductive pattern, the motor actuator adapted to drive the motor. 2. The motor actuator according to claim 1, wherein one of said first and second connecting portions is connected to said second connecting portion.
The claw portion is folded back in a direction along the extending direction of the external connection terminal of the conductive plate, and the other of the first and second connecting portions is mounted by the folded claw portion Motor actuator having a portion. 3. The motor actuator according to claim 2, wherein the first and second connecting portions have holes and protrusions that engage with each other for alignment. 4. The motor actuator according to claim 1, wherein the second conductive plate is formed to be thicker than the first conductive plate. 5. The motor actuator according to claim 1, wherein the pattern conductor includes a conductor portion centered on an axis of the gear, and a gear portion provided on a part of the conductor portion. A first blocking portion formed in an arc shape along a first circumference centered on an axis of the first portion and blocking conduction of the conductor portion; A second blocking portion formed in an arc shape along a second circumference to be displaced by a predetermined angle from the first blocking portion, and the plurality of brushes include: A constantly conductive terminal that always slides on the conductor part avoiding the first blocking part and the second blocking part; and a first sliding part that slides on the first circumference where the first blocking part is formed. Intermittent conductive terminal, and a second intermittent conductive end that slides on the second circumference where the second interrupting portion is formed. Motor actuator configured to include the, the. 6. The motor actuator according to claim 1, wherein the pattern conductor has a predetermined resistivity and is formed in an arc shape around the axis of the gear. And a conductor portion formed on a circumference around the axis of the gear, and electrically connected at one end in the length direction of the arc of the resistance portion. A motor actuator comprising: a conductive conductive terminal that contacts and conducts with the conductive portion; and a resistive conductive terminal that contacts and conducts with the resistance portion. 7. The motor actuator according to claim 1, wherein the pattern conductor includes a common conductor portion formed along a circumferential direction around an axis of the gear. A plurality of individual conductors arranged in a plurality of concentric rows around the common conductor at intervals in the circumferential direction, wherein the common conductor and the plurality of individual conductors are respectively inside or At least a part of the outside is connected and integrated, the plurality of brushes slide on a circumference on which the common conductor is formed, and are constantly in contact with the common conductor. An individual brush that slides on a circumference on which each of the individual conductors is formed and contacts each of the individual conductors. 8. The motor actuator according to claim 1, wherein an output shaft for transmitting the driving force of the motor to the outside is connected to a damper in a cooling and heating device of an automobile. The damper is mounted so as to be able to transmit a driving force in a direction for switching the direction of the air, and the damper is at least one of a damper for switching inside and outside air, a damper for switching outlet, or a damper for adjusting a mixing ratio of cold air and hot air. One is the motor actuator. 9. A method for manufacturing a motor actuator, comprising: a plurality of brushes; a first pattern portion including a plurality of first connection portions and a first temporary connection portion to form a first temporary power distribution pattern; Manufacturing a first conductive plate in which is integrated, from a single conductive plate, a plurality of external connection terminals for electrically connecting with other components, a plurality of second connection portions, and Manufacturing a second conductive plate integrated with a second pattern portion including a second temporary connection portion to form a second temporary power distribution pattern from a single conductive plate; A step of connecting the first conductive plate and the second conductive plate; and a step of forming the conductive unit by integrally solidifying the connected first conductive plate and the second conductive plate with an insulating resin. And then, the first and second Cutting the first and second temporary connecting portions of the conductive plate to form a power distribution pattern suitable for driving the motor; and attaching the conductive unit to the housing after the cutting step. Manufacturing method of motor actuator. 10. The method of manufacturing a motor actuator according to claim 9, wherein one of the first and second connecting portions is connected to the second connecting portion.
The claw portion is folded back in a direction along the extending direction of the external connection terminal of the conductive plate, and the other of the first and second connecting portions is mounted by the folded claw portion The first conductive plate and the second conductive plate are connected by folding the claw portion in a direction along the extending direction of the external connection terminal and holding the mounting portion. Manufacturing method of motor actuator. 11. The method of manufacturing a motor actuator according to claim 10, wherein the first and second connecting portions have holes and protrusions that engage with each other, and are positioned by engaging the holes and protrusions. A method of manufacturing a motor actuator for connecting the first conductive plate and the second conductive plate after the alignment.