CN204376153U - Device for transmitting rotary electric signal - Google Patents

Abstract

The utility model provides a device for transmitting rotational electrical signals, which includes: a core shaft, which contains a stepped surface; a first bearing, which is engaged with the stepped surface and includes a first inner ring body and a A first outer ring body is set around the periphery of the first inner ring body, and the inner wall of the first inner ring body surrounds a first set of connecting holes for installing the stepped mandrel; a second bearing, It contains a second inner ring body and a second outer ring body set around the periphery of the second inner ring body. The inner wall of the second inner ring body surrounds a second set of connecting holes. The second inner ring body The inner wall of the ring body is kept at a certain distance from the core axis; and an elastic unit is pre-compressed and installed in the carrier and connected between the second outer ring body and the first outer ring body. When the bearing of the present invention is used in equipment that requires rotation, it can not only fix the rotating core shaft, but also stably transmit electrical signals to the actuator or sensor of the rotating component that requires electrical signals.

Description

device for transmitting electrical signals

technical field

The utility model relates to providing a device for transmitting electrical signals to rotating components, which refers to a device or module with multiple bearings that are required to be rotated, such as an ultrasonic knife handle of a machine tool, to ensure electrical Rotary telecommunications transmission connector device for sexual connection.

Background technique

In order to add special functions to existing processing machines, such as high-frequency vibration-assisted processing, sensors are installed on the clamping head of the processing machine, and a brush device is installed so that the actuator or sensor is electrically connected to the brush blade of the brush. Sexual connection, connect the external power supply with a brush, and introduce the current of the external power supply into the actuator or sensor through the brush. Since the clamping head is in the process of processing, the mandrel will drive the tool to perform the rotation action, resulting in electric current The brush ring and the brush piece cannot be in contact with each other, and even the long-term contact between the brush ring and the brush piece will easily cause the wear of the brush piece, and at the same time, it will easily cause the current supplied to the actuator or sensor to be unstable, affecting the actuation In addition, in existing processing machines or other devices that require rotation, a single bearing is often used to clamp and support the rotating mandrel in the rotating mandrel. to reduce the deflection of the shaft, but the support effect is not good, and the rigidity is not enough, it is easy to cause damage to the bearing due to machine vibration.

With reference to the patent announcement No. I258538 "motor single bearing structure" in Taiwan, China, this patent mainly solves the following problems: due to the rapid development of the current computer information industry, the computing speed of the central processing unit of information products is also getting faster and faster, resulting in The amount of heat is also increasing. In order to effectively remove the heat, the use of cooling devices is the most basic equipment. At present, the most commonly used cooling device is the cooling fan, because it is the most convenient to use and the price is relatively cheap. The quality of a cooling fan often depends on the running state of the motor. The unstable operation of the motor will definitely affect the normal operation of the system or the device as a whole, and the motor bearing is the key to the quality and working stability of the motor. The ball bearings of general motors usually use multiple balls inside. When the bearing is running, the balls rotate in the bearing housing; however, the bearings are prone to internal clearance, which will affect the operation and performance of the motor. For example: Vibration, noise, heat, power consumption and other shortcomings. At the same time, the vibration of the ball in the bearing will also cause fretting wear on the raceway surface.

In order to solve the above-mentioned problems, the main structure of this patent includes: an axis, a fan base, and a bearing. Rotated by the load of the bearing, the above-mentioned fan seat has a hollow shaft seat and defines a receiving space, so that the shaft center can be set in the shaft seat, and a protrusion is provided on the inner edge of the aforementioned shaft seat; it is characterized in that : An elastic component is arranged between the bearing and the protruding part in the aforementioned shaft seat to generate an elastic force to form a pre-pressure on the bearing shell and the ball inside it, so as to avoid the internal clearance of the bearing and maintain the inside of the bearing. The ball is in a stable running state, which can improve the running efficiency of the motor, and one end of the shaft center forms an arc-shaped configuration, and the bottom of the shaft seat is provided with a groove corresponding to the arc-shaped configuration formed by the shaft center, Those who connect the axis.

Although the above-mentioned patent discloses that at least one elastic component or magnetic component is set at an appropriate position in the motor shaft seat to apply preload to the ball bearing housing and the ball inside to avoid internal clearance of the bearing, but it does not make much use of it. A bearing is used to support and fix and transmit electrical signals at the same time.

Because prior art still can't deal with this type of problem perfectly, so there is the necessity of breaking through and solving. Therefore, how to improve convenience, practicability and economic benefits is a key project that the industry should strive to solve and overcome.

Therefore, in view of the fact that the lack of conventional bearings is not ideal, the inventor of this case started to develop its solution, hoping to develop a more convenient, practical and high economic benefit for transmitting rotating telecommunication The device of number, to promote the development of society, then has the generation of this utility model through the idea of a long time.

Utility model content

Based on the improvement of the existing rotating demand devices (such as processing machines) that are electrically connected to the inductor by brushes, it is easy to cause unstable current supply, fast wear and increased cost, and the lack of a single function of only using bearings to support and fix. The utility model is dedicated to the research and creation of a device for transmitting rotating electrical signals, and its structure is as follows:

A device for transmitting rotating electrical signals, comprising: a stepped mandrel, the stepped mandrel contains a stepped surface; a carrier, the carrier is passed through the stepped mandrel; a first bearing, the first bearing It is arranged in the carrier and snapped onto the stepped surface, comprising a first inner ring body and a first outer ring body sleeved on the periphery of the first inner ring body, the inner side of the first inner ring body The wall ring forms a first set of connecting holes for the stepped mandrel to be installed, and a plurality of first balls are arranged to roll between the first outer ring body and the first inner ring body; a second bearing , the second bearing is located in the carrier, including a second inner ring body and a second outer ring body sleeved on the periphery of the second inner ring body, the inner wall of the second inner ring body is surrounded by A second group of connecting holes, the second group of connecting holes communicates with the first group of connecting holes, the inner side wall of the second inner ring body is also kept at a distance from the core shaft, and a plurality of second balls are provided rolling between the second outer ring body and the second inner ring body; a stopper, the stopper is set on the second inner ring body; and an elastic unit, the elastic unit is pre-compressed Set in the carrier and connected between the second outer ring body and the first outer ring body, the elastic unit can have various forms: a non-conductor spring, or a conductor spring and a conductor spring The insulating base below, wherein, a first current and a second current of opposite polarity to the first current are transmitted to the first bearing and the second bearing respectively by the inductor, and the first current passes through the The first inner ring, the first ball, the first outer ring, the carrier to a first electrode, the second current passes through the second inner ring, the second ball, the second outer ring, The carrier is connected to a second electrode.

Furthermore, the device for transmitting rotation electric signals of the present invention may further include an insulating sleeve connected between the first inner ring body and the second inner ring body.

Furthermore, the device for transmitting rotation electric signals of the present invention may further include a non-conductive ring disposed between the inner side wall of the second inner ring body and the mandrel.

Furthermore, the carrier system of the device for transmitting rotation electrical signals of the present invention can be composed of a first carrier and a second carrier, the first carrier is L-shaped and an insulating part is provided at one end, and the elastic unit It is a metal spring and is arranged on the insulating part. In addition, it may also include a third carrier connected to the second carrier and a third bearing. The third bearing passes through the mandrel and engages with the on the stepped surface and installed in the third carrier, the third bearing includes a third inner ring body and a third outer ring body sleeved on the periphery of the third inner ring body, the third outer ring body and The first outer rings are connected to each other by a second elastic unit, and a plurality of third balls are provided to roll between the third outer ring and the third inner ring.

The effect advantage that the utility model reaches is as follows:

1. The bearing overvoltage of the utility model uses multi-metal point balls or rollers in the shaft body of the bearing itself to achieve multi-point contact overvoltage, reduce contact resistance, and reduce heat loss caused by contact resistance. And because the bearing is a standardized product at present, it is convenient to assemble in application, has high verticality, and has the advantages of being easy to obtain.

2. The multi-bearing device of the present utility model can carry out multi-pole (phase) power transmission compared with a single bearing. For example, three bearings can be set to achieve the transmission of three-phase power supply, and it is more suitable to improve the stability of the rotation electric signal transmission. High speed rotation.

3. The utility model uses the spring unit preloading method to reduce the bearing clearance, improve the stability of the bearing over-electricity, reduce the contact resistance during over-electricity, and increase the service life.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is a top view of the structural appearance of the first embodiment of the utility model.

Fig. 2 is an exploded view of the first embodiment of the utility model.

Fig. 3 is a schematic diagram of the assembled structure of the first embodiment of the present invention.

Fig. 4 is a schematic structural view of the second embodiment of the present invention.

Fig. 5 is a schematic structural view of the third embodiment of the present invention.

Fig. 6 is a schematic structural view of the fourth embodiment of the present invention.

Fig. 7 is a schematic structural view of the fifth embodiment of the present invention.

Fig. 8 is a schematic view of the fourth embodiment of the utility model.

[Description of drawing number comparison]

Step mandrel 10

Step surface 100

Carrier 20

First carrier 200

Second carrier 201

Third carrier 203

Insulation Department 202

Stopper 21

First bearing 30

First Inner Ring 300

The first group of sockets 301

First ball 302

First outer ring body 303

Second bearing 40

Second inner ring body 400

The second group of sockets 401

Second ball 402

Second outer ring body 403

The third bearing 41

Third inner ring body 410

The third ball 411

Third outer ring body 412

Elastic unit 50

Second elastic unit 51

Conductor spring 500

Insulation sleeve 60

Non-conductive body 70

Sensor 80

External power supply 90

First electrode 900

Second electrode 901

The first current A

Second current B

Detailed ways

In order to have a further understanding and understanding of the structural features and the achieved effects of the utility model, a detailed description is provided in conjunction with preferred embodiments and accompanying drawings, as follows:

Referring to Fig. 1, the top view of the structural appearance of the first embodiment of the utility model for transmitting the device for rotating electrical signals, Fig. 2 the exploded view of the first embodiment of the utility model and the combined structure schematic diagram of the first embodiment of the utility model, this The utility model is a device for transmitting rotating electrical signals, including: a stepped mandrel 10, which contains a stepped surface 100; a carrier 20, which is passed through the stepped mandrel 10 ; a first bearing 30, the first bearing 30 is located in the carrier 20, and engaged on the stepped surface 100, including a first inner ring body 300 and sleeved on the periphery of the first inner ring body 300 A first outer ring body 303, the inner side wall of the first inner ring body 300 surrounds a first set of connecting holes 301 for providing the stepped mandrel 10, and a plurality of first balls 302 are arranged on the first set of holes 301. Roll between an outer ring body 303 and the first inner ring body 300; a second bearing 40, the second bearing 40 is arranged in the carrier 20, contains a second inner ring body 400 and is sleeved on the first inner ring body A second outer ring body 403 on the periphery of the second inner ring body 400, the inner wall of the second inner ring body 400 surrounds a second group of connecting holes 401, and the second group of connecting holes 401 is connected with the first group of connecting holes. The hole 301 communicates with each other, and the inner side wall of the second inner ring body 400 also maintains a distance from the mandrel, and a plurality of second balls 402 are arranged between the second outer ring body 403 and the second inner ring body 400 Rolling between them; a stopper 21, the stopper 21 is set on the second inner ring body 400; and an elastic unit 50, the elastic unit 50 is pre-compressed and set in the carrier 20, and connected to the second inner ring body 400 Between the second outer ring body 403 and the first outer ring body 303 , the elastic unit 50 can be a non-conductive spring.

Referring to Fig. 4, the structural appearance diagram of the second embodiment of the utility model, the second embodiment of the utility model is an improvement of the first embodiment, and the second embodiment is additionally provided with an insulating sleeve 60 connected to the first inner ring body 300 and the second inner ring body 400, so as to prevent the first inner ring body 300 and the second inner ring body 400 from contacting to form the same polarity when used for electrical conduction, which will cause the circuit to be disconnected and the electrical signal cannot be transmitted .

Referring to Fig. 5, the structural diagram of the third embodiment of the utility model, the third embodiment of the utility model is an improvement of the first embodiment, and the third embodiment of the utility model is additionally provided with a non-conductive body 70 ring located in the second inner Between the inner side wall of the ring body 400 and the mandrel, avoid the use of conduction (as shown in Figure 7). Since the stepped mandrel 10 is a conductor, if the stepped mandrel 10 is connected to the first inner ring body 300, When the second inner ring body 400 is in contact, the electrical polarity of the first inner ring body 300 is the same as that of the second inner ring body 400, resulting in no energization loop, so a non-conductor 70 must be used to connect the ladder The mandrel 10 is separated from the second inner ring body 400 .

Referring to Fig. 6, it is a structural diagram of the fourth embodiment of the utility model, the fourth embodiment of the utility model is an improvement of the third embodiment, the carrier 20 of the fourth embodiment of the utility model can be divided into a first carrier 200 and A second carrier 201 , the first carrier 200 is L-shaped and has an insulating portion 202 at one end thereof, and the elastic unit 50 can be a conductor spring 500 and is disposed on the insulating portion 202 .

Referring to Fig. 7, it is a structural schematic view of the fifth embodiment of the present utility model, the fifth embodiment is that the fourth embodiment is additionally provided with a third carrier 203 and a third bearing 41 connected with the second carrier 201, the The third bearing 41 passes through the mandrel 10 and fits on the stepped surface 100 and is installed in the third carrier 203. The third bearing 41 includes a third inner ring body 410 and is sleeved in the third inner ring body. A third outer ring body 412 on the periphery of the ring body 410, the third outer ring body 412 and the first outer ring body 303 are connected to each other by a second elastic unit 51, and a plurality of third balls 411 are arranged on the outer ring body 410. Roll between the third outer ring body 412 and the third inner ring body 410 to achieve multi-pole (phase) power transmission function.

Referring to FIG. 8 , it is a schematic view of the fourth embodiment of the utility model. The utility model is used to transmit the device for rotating electric signals and is often used in equipment (not shown in the figure) with rotation requirements. The equipment for rotation requirements is as follows: Processing machine, the utility model is connected with electric power or signal (as shown by the first current A and the first current B with the opposite polarity with the first current) the inductor 80 to be rotated on the stepped mandrel 10, the first Both an outer ring body 303 and the second outer ring body 403 are fixed on the carrier 20 and can be electrically connected to the external power supply 90. The current path can be: a first current A is transmitted through the inductor 80 and connected with A second current B with opposite polarity to the first current A respectively flows to the first bearing 30 and the second bearing 40, and the first current A passes through the first inner ring body 300, the first ball 302, the The first outer ring body 303, the carrier 20 and a first electrode 900 of the external power supply 90, the second current B passes through the second inner ring body 400, the second ball 402, the second outer ring body 403, the A second electrode 901 from the carrier 20 to the external power supply 90, when the stepped mandrel 10 rotates, the first inner ring 300, the inductor 80, and the first ball 302 rotate and roll accordingly, and the first outer The ring body 303 and the second outer ring body 403 do not rotate with the stepped mandrel 10 to ensure the electrical connection between the first inner ring body 300 , the first outer ring body 303 and the actuator/inductor 80 , and the electrical connection relationship between the first outer ring body 303, the second outer ring body 403 and the external power supply, the first ball 302 is used to achieve multi-point contact overelectricity, reduce contact impedance, and reduce contact impedance. For heat loss, refer to FIG. 5 again. If the stepped mandrel 10 and the second inner ring body 400 are connected together, the second inner ring body 400 will also rotate accordingly; for the same reason, refer to FIG. The third bearing 41 of the fifth embodiment can also form another single-phase circuit and be electrically connected to each of the above-mentioned single-phase circuits, so as to achieve the transmission function of multi-pole (phase) power, and so on, the utility model can also be further A plurality of bearings are arranged in sequence.

And because the stepped mandrel 10 rotates, the stopper 21 and the stepped surface 100 are used to stop and fix the first inner ring body 300 and the second inner ring body 400 respectively, the first bearing 30 and the second inner ring body 400 are fixed. The second bearing 40 will produce a bearing gap, so an elastic unit 50 must be used to eliminate the bearing gap, so as to improve the natural vibration frequency of the shaft and be suitable for high-speed rotation, reduce the deflection of the shaft, improve the rotation accuracy and positioning accuracy, and Vibration and noise are suppressed, and the purpose of stable current transmission can be achieved.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

Claims (6)

1. A device for transmitting rotating electric signals, comprising: a mandrel, which contains a stepped surface; a carrier, the carrier is assembled on the stepped mandrel; A first bearing, the first bearing is arranged in the carrier and engaged with the stepped surface, including a first inner ring body and a first outer ring body sleeved on the periphery of the first inner ring body , the inner wall of the first inner ring body encloses a first group of connecting holes for the installation of the stepped mandrel, and a plurality of first balls are arranged on the first outer ring body and the first inner ring body scroll between A second bearing, the second bearing is located in the carrier, including a second inner ring body and a second outer ring body sleeved on the periphery of the second inner ring body, the inner side of the second inner ring body The wall ring forms a second group of connection holes, which are connected with the first group of connection holes, and the inner side wall of the second inner ring body is also kept at a distance from the mandrel, and multiple a second ball rolls between the second outer ring body and the second inner ring body; a stopper mounted on the second inner ring body; and an elastic unit, the elastic unit is pre-compressed and arranged in the carrier, and connected between the second outer ring body and the first outer ring body; Wherein, the inductor transmits a first current and a second current with a polarity different from the first current to the first bearing and the second bearing respectively, and the first current passes through the first inner ring body, The first ball, the first outer ring body, the carrier to a first electrode, the second current passes through the second inner ring body, the second ball, the second outer ring body, the carrier to a second electrode. 2 . The device for transmitting rotation electrical signals as claimed in claim 1 , wherein an insulating sleeve is further provided and connected between the first inner ring body and the second inner ring body. 3 . 3. The device for transmitting rotational electrical signals as claimed in claim 1, wherein the elastic unit is a non-conductor spring. 4 . The device for transmitting rotation electrical signals as claimed in claim 1 , wherein another non-conductive ring is disposed between the inner side wall of the second inner ring body and the mandrel. 5 . 5. The device for transmitting rotational electrical signals as claimed in claim 4, wherein the carrier system includes a first carrier and a second carrier, and the first carrier system is connected to the second bearing to form an L The second carrier is connected and fixed to the first bearing, and the elastic unit is a conductor spring and is arranged on the insulating part. 6. The device for transmitting rotation electric signals as claimed in claim 5, wherein, it further comprises a third carrier connected to the second carrier and a third bearing, and the third bearing passes through The mandrel is engaged on the stepped surface and installed in the third carrier, the third bearing includes a third inner ring body and a third outer ring body sleeved on the periphery of the third inner ring body, The third outer ring body and the first outer ring body are connected to each other by a second elastic unit, and a plurality of third balls are arranged between the third outer ring body and the third inner ring body. scroll.