JP2019160551A - Switch device and manufacturing method of switch device - Google Patents

Abstract

To provide a switch device and a manufacturing method of the switch device, capable of improving producibility.SOLUTION: A switch device comprises a plurality of outer terminals 130 capable of connecting outer equipment and contacts and separates wiring electrically connecting the outer terminals 130 with a contact and separation mechanism. A manufacturing method of the switch device comprises: an assembling step of housing the wiring and the contact and separation mechanism in a housing; an engagement member attachment step of electrically connecting an attachment part 131 and an engagement member 20 by engaging the engagement member 20 to the attachment part 131 previously connected to the wiring of the switch device 1; and a circuit attachment step of electrically connecting the engagement member 20 and a circuit member 21 by attaching the circuit member 21 containing an electric element to the engagement member 20 engaged to the attachment part 131. That is, the switch device 1 comprises the attachment part 131 capable of attaching an electric element circuit 2 in addition to the outer terminal 130 capable of connecting the outer equipment, and can attach the electric element circuit 2 to the attachment part 131.SELECTED DRAWING: Figure 2

Description

  The present invention provides a switch device including a plurality of external terminals to which an external device can be connected, a wiring for electrically connecting the external terminals, and a contact / separation mechanism for electrically connecting / disconnecting the interior of the wiring, and The present invention relates to a method for manufacturing such a switch device.

  For example, a switch device that is incorporated in an external device such as an electrical component of an automobile and connects and disconnects the electrical connection of the external device is widely used. As such a switch device, Patent Document 1 discloses a switch device including an electric circuit that detects at least one of a disconnection and a short circuit of a wiring connecting to an external device.

Japanese Patent Laid-Open No. 2006-76356

  When manufacturing a switch device, not only a switch device having an electric circuit including a resistance element as described in Patent Document 1, but also a switch device having no electric circuit even if the switches have the same outer shape and size. May also be manufactured.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a switch device capable of efficiently changing a circuit configuration.

  Another object of the present invention is to provide a method for manufacturing such a switch device.

  In order to solve the above-described problem, a switch device described in the present application is a switch device that includes a plurality of external terminals to which an external device can be connected, and that connects and disconnects wirings that electrically connect the external terminals with a contact / separation mechanism. A conductive wiring member for forming the wiring, wherein the wiring member is capable of mounting an electric element circuit including an electric element constituting a circuit in combination with the external device separately from the external terminal. The attachment portion is formed so as to be engageable with an engagement member provided in the electric element circuit.

  The switch device may further include an electric element circuit connected to the attachment portion.

  Further, in the switch device, the electric element circuit includes an engaging member formed to be engageable with the attachment portion in an electrically connected state, and one or more electrically connected to the engaging member. A circuit member including a plurality of electrical elements, wherein the electrical element circuit is attached in a state where the engagement member is engaged with the attachment portion.

  In the switch device, the engaging member and the circuit member of the electric element circuit are formed separately.

  The switch device may further include a housing that accommodates part or all of the wiring and the contact / separation mechanism, and the electric element circuit is attached to the attachment portion from the outside of the housing. And

  Furthermore, the manufacturing method of the switch device described in the present application includes a plurality of external terminals to which an external device can be connected, and manufactures a switch device in which wiring for electrically connecting the external terminals is contacted / separated by a contact / separation mechanism. It is a method, Comprising: The engaging member attachment process which attaches an electrical element circuit to the attaching part previously connected to the wiring of the said switch apparatus is performed.

  Furthermore, the manufacturing method of the switch device described in the present application includes a plurality of external terminals to which an external device can be connected, and manufactures a switch device in which wiring for electrically connecting the external terminals is contacted / separated by a contact / separation mechanism. An engagement member attachment step of engaging an engagement member with an attachment portion that is previously connected to the wiring of the switch device to electrically connect the attachment portion and the engagement member, and the attachment A circuit attachment step of attaching a circuit member including one or a plurality of electric elements to the engagement member engaged with a portion and electrically connecting the engagement member and the circuit member.

  The switch device and the manufacturing method of the switch device described in the present application facilitate the work related to the mounting of the electric element circuit.

  The switch device and the method for manufacturing the switch device according to the present invention have an effect of improving the manufacturing efficiency such as facilitating the work related to the mounting of the electric element circuit by the mounting portion to which the electric element circuit can be mounted.

It is a schematic perspective view which shows an example of the external appearance of the switch apparatus described in this application. It is a disassembled perspective view which shows roughly the example of a part of switch apparatus described in this application. It is a schematic front view which shows roughly an example of the wiring member with which the switch apparatus of this-application description is provided. It is a schematic perspective view which shows roughly an example of the engaging member of the electric element circuit attached to the switch apparatus of this application description. It is a schematic front view which shows roughly an example of the wiring member with which the switch apparatus of this-application description is provided. It is a schematic perspective view which shows an example of the external appearance of the switch apparatus described in this application. It is a disassembled perspective view which shows roughly the example of a part of switch apparatus described in this application. It is a flowchart which shows schematically the process which concerns on the manufacturing method of the switch apparatus described in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a circuit diagram showing an example of a part of circuit composition of the 1st switch device indicated in this application. It is a schematic diagram which shows typically an example of the circuit structure of the 1st switch apparatus described in this application.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Application example>
The switch device according to the present invention is used in various products and applications such as automobiles and electric systems for motorcycles. As a specific example, there is a latch switch that detects an open / closed state of an automobile door. Further, the present invention is not limited to automobiles and motorcycles, and is used for various industrial detection switches and the like.

<Overview>
In the present application, a switch device of a type to which an electric element circuit including one or a plurality of electric elements is attached and a switch device to which no electric element circuit is attached are disclosed. However, these switch devices are not manufactured as completely different devices, but a part of the manufacturing process of each switch device can be made common, which contributes to manufacturing efficiency. . In the following description, when both types of switch devices are shown without distinction, the switch device 1 is shown, and when each type of switch device is shown separately, the switch device with an electric element circuit attached is designated as the switch device 1. A switch device 1a is shown as a switch device 1a, and a switch device without an electric element circuit is shown as a second switch device 1b. The same reference numerals are also given to the drawings.

<First switch device 1a>
FIG. 1 is a schematic perspective view showing an example of the appearance of the switch device 1 described in the present application. In FIG. 1, the 1st switch apparatus 1a is shown as the switch apparatus 1 of this-application description. In the present specification, the direction of the first switch device 1a is expressed with the left front side as the front, the right back side as the rear, the upper side as the upper side, and the lower side as the lower side as viewed in FIG. The mounting direction of the first switch device 1a is not limited. In the first switch device 1a, the configuration of the internal contact / separation mechanism and the like is covered from above and below by a first housing 10 shown on the upper side and a second housing 11 shown on the lower side in FIG. The upper first housing 10 and the lower second housing 11 are engaged with each other and integrated in a substantially rectangular parallelepiped shape.

  A pair of external terminals 130 to which external devices can be connected protrude from the upper surface of the first housing 10 located on the upper side, and each external terminal 130 protrudes from the upper surface of the first housing 10. The terminal covers 100 are respectively covered. Each terminal cover 100 is provided with a terminal hole 101 penetrating in the front-rear direction so that a device terminal (not shown) included in the external device can be inserted, and the device terminal is inserted through the terminal hole 101. Thus, the device terminal and the external terminal 130 are engaged, and the device terminal and the external terminal 130 are electrically connected. In the following description, when the pair of external terminals 130 are particularly distinguished and described, the left external terminal 130 will be described as the first external terminal 130a and the right external terminal 130b as the second external terminal 130b.

  On the upper surface of the first housing 10, the pair of terminal covers 100 protrudes with a gap therebetween, and there are a total of three between the pair of terminal covers 100 and the side of each terminal cover 100. The circuit board 102 is erected. Each circuit board 102 has a rectangular parallelepiped shape, and a rectangular circuit insertion slot 102a is formed on the front surface.

  The electric element circuit 2 is attached to the circuit board 102 in which the circuit insertion slot 102a is opened.

  From the lower surface of the second housing 11, an operating body 12 that receives an external force and operates so as to be pressed down protrudes.

  FIG. 2 is an exploded perspective view schematically showing an example of a part of the switch device 1 described in the present application. In FIG. 2, the 1st switch apparatus 1a is shown as the switch apparatus 1 of this-application description. The first switch device 1a includes various configurations such as a wiring member 13 and a movable contact (not shown) in addition to the first casing 10, the second casing 11, the operating body 12, and the electric element circuit 2 described above. In addition, the configuration of a part of the operation body 12, the wiring member 13, the movable contact, and the like are housed in the first housing 10 and the second housing 11. And the structure of the operation body 12, the wiring member 13, and the movable contact accommodated in the first housing 10 and the second housing 11 functions as a contact / separation mechanism for contacting and separating external terminals.

  FIG. 3 is a schematic front view schematically showing an example of the wiring member 13 provided in the switch device 1 described in the present application. The wiring member 13 of the 1st switch apparatus 1a is demonstrated using FIG.2 and FIG.3. The wiring member 13 is a member obtained by processing a conductor such as a metal plate, and forms a wiring in the first switch device 1a. A part of the wiring member 13 can attach the engaging member 20 of the electric element circuit 2 by engaging with the external terminal 130 and the electric element circuit 2 which are engaged with the inserted apparatus terminal (terminal of the external apparatus). It is formed as a fixed contact portion 132 that contacts and separates the wiring in the first switch device 1a by contact with and away from the mounting portion 131 and the movable contact.

  The external terminal 130 has a shape in which a substantially H-shaped opening is formed in a substantially rectangular metal frame as viewed from the front. The external terminal 130 is disposed so as to protrude from the upper surface of the first housing 10 in the first switch device 1a, and is exposed to the outside of the first switch device 1a through a terminal hole 101 penetrating the front and rear of the terminal cover 100. ing. When the device terminal of the external device is inserted into the substantially H-shaped opening, the device terminal and the external terminal 130 are engaged, and the device terminal is fixed to the external terminal 130. Note that the shape of the external terminal 130 is not limited to the illustrated shape, and for example, the opening can be formed in various shapes such as a square shape, a circular shape, and a three-dimensionally engaged shape. . In the wiring member 13 illustrated in FIG. 2, the external terminals 130 (first external terminal 130a and second external terminal 130b) are formed at two locations, and the external terminals 130 are electrically separated from each other.

  The attachment portion 131 has a shape in which a substantially square opening is formed in a substantially square frame from the viewpoint from the front. The attachment portion 131 is exposed to the outside of the first switch device 1a through a circuit insertion port 102a opened in the circuit board 102. When the engaging member 20 of the electric element circuit 2 is inserted into the substantially square opening, the engaging member 20 and the mounting portion 131 are engaged, and the engaging member 20 is fixed to the mounting portion 131. Note that the shape of the attachment portion 131 is not limited to the illustrated shape, and for example, the opening can be formed in various shapes such as a circular shape and a three-dimensionally engaged shape. Unlike the external terminal 130 in which the device terminal of the external device can be mounted in the wiring member 13, the mounting portion 131 formed in this way is a slot in which the electric element circuit 2 different from the external device can be mounted. The wiring member 13 illustrated in FIG. 2 has the attachment portions 131 formed at three locations, but the attachment portions 131 are not limited to three locations. In the following description, when the three attachment portions 131 are particularly distinguished, the first attachment portion 131a, the second attachment portion 131b, and the third attachment portion 131c are described from the left side in FIG. The first attachment portion 131a is formed on the left side of the first external terminal 130a and is electrically connected to the first external terminal 130a. The second mounting portion 131b is formed on the right side of the first external terminal 130a, and is wired with the wiring member 13 between the first external terminal 130a and electrically connected to the first external terminal 130a. . The third attachment portion 131c is formed on the right side of the second external terminal 130b and is electrically connected to the second external terminal 130b.

  The fixed contact portion 132 includes a left side portion that is bent so that the lower end portion of the plate-like wiring member 13 erected in the vertical direction is horizontal to the rear side, and a right side portion that is bent so as to be horizontal to the front side. It is formed as a part. In the following description, when the two fixed contact portions 132 are particularly distinguished and described, the left side and the right side will be described as the first fixed contact portion 132a and the second fixed contact portion 132b in FIG. The first fixed contact portion 132a is wired between the second attachment portion 131b and the second attachment portion 131b, and is electrically connected to the second attachment portion 131b. The second fixed contact portion 132b is wired between the third attachment portion 131c and the third attachment portion 131c by the wiring member 13, and is electrically connected to the third attachment portion 131c. When the movable contact moves and contacts the fixed contact portion 132, the first fixed contact portion 132a and the second fixed contact portion 132b are electrically connected, and the device terminals of the external device are closed. Further, when the movable contact is separated from the fixed contact portion 132, the first fixed contact portion 132a and the second fixed contact portion 132b are electrically separated from each other, and the device terminals of the external device are opened. In addition, the arrangement position and shape of the fixed contact portion 132 can be designed as appropriate. Thus, the fixed contact part 132 of the wiring member 13 and the movable contact form a main part of the contact / separation mechanism.

  FIG. 4 is a schematic perspective view schematically showing an example of the engaging member 20 of the electric element circuit 2 attached to the switch device 1 described in the present application. The electric element circuit 2 attached to the first switch device 1a will be described with reference to FIGS. The electric element circuit 2 includes an engagement member 20 that is inserted into the circuit insertion port 102 a of the first housing 10, and a circuit member 21 that is attached to the engagement member 20. The engaging member 20 and the circuit member 21 constituting the electric element circuit 2 are formed as separate bodies. After engaging the engaging member 20 with the circuit base 102, the circuit member 21 is attached to the engaging member 20. It is attached.

  The engagement member 20 illustrated in FIGS. 2 and 4 is divided into three parts. In the following description, when the engagement members 20 separated into three parts are particularly distinguished and described, the first engagement member 20a, the second engagement member 20b, and the third engagement are shown from the left side in FIG. The joint member 20c will be described. The engagement member 20 is inserted from the circuit insertion port 102a of the first housing 10 and is engaged with the attachment portion 131 of the wiring member 13; the circuit attachment portion 202 to which the circuit member 21 is attached; 1 is provided with a contact piece 203 fixed in contact with the terminal cover 100 protruding from the housing 10.

  The engagement piece 201 is a rod-shaped portion having a substantially square cross section, extends upward from the engagement member 20 in a vertically standing state, and is bent horizontally from the middle to the rear side. In a state where the engaging member 20 of the electric element circuit 2 is attached to the first switch device 1a, the engaging piece 201 is inserted from the circuit insertion port 102a of the first housing 10, and the tip portion is attached to the wiring member 13. The portion 131 is engaged and fixed. When the engagement piece 201 is engaged with the wiring member 13, the engagement piece 201 fixed in the engaged state and the wiring member 13 are electrically connected. FIGS. 2 and 4 show examples in which the engagement piece 201 extends from each of the first engagement member 20a, the second engagement member 20b, and the third engagement member 20c. The engagement piece 201 of the first engagement member 20a is engaged with the first attachment portion 131a of the wiring member 13, the engagement piece 201 of the second engagement member 20b is engaged with the second attachment portion 131b, The engagement piece 201 of the 3rd engagement member 20c has shown the example engaged with the 3rd attachment part 131c.

  The circuit attachment portion 202 is disposed outside the first housing 10 and serves as an attachment allowance when the circuit member 21 is attached. For example, the circuit member 21 is placed on the circuit attachment portion 202, and terminal portions of elements included in the circuit member 21 are welded to the circuit attachment portion 202.

  The contact piece 203 extends from the side of the engagement member 20 and is bent from the middle to the rear side. In a state where the engagement member 20 of the electric element circuit 2 is attached to the first switch device 1a, the contact piece 203 is fixed while being in contact with the terminal cover 100. 2 and 4 show examples in which the contact piece 203 extends from the right end of the first engagement member 20a, both ends of the second engagement member 20b, and the left end of the third engagement member 20c. .

  The circuit member 21 accommodates one electric element such as a resistor or a capacitor, or a circuit in which a plurality of electric elements are wired, and is connected in series and / or in parallel to a circuit opened and closed by the first switch device 1a. Configure the circuit to be connected. In FIG. 2, the circuit members 21 housed in two housings are illustrated, but may be combined into one housing or may be distributed over three or more housings. In the following description, when the two circuit members 21 are particularly distinguished and described, they are described as the first circuit member 21a and the second circuit member 21b from the left side in FIG. The first circuit member 21a is attached across the circuit attachment portions 202 of the first engagement member 20a and the second engagement member 20b. The first circuit member 21a has, for example, two terminals, one is welded to the first engagement member 20a, and the other is welded to the second engagement member 20b. The second circuit member 21b is attached across the circuit attachment portions 202 of the second engagement member 20b and the third engagement member 20c. The second circuit member 21b has, for example, two terminals, one is welded to the second engagement member 20b, and the other is welded to the third engagement member 20c.

  The first switch device 1a is configured as described above. The first switch device 1a described above is merely an example, and for example, a contact / separation mechanism such as a fixed contact portion 132 that contacts / separates wiring can be appropriately designed.

  For example, the first switch device 1a described above closes the circuit when pressed and opens the circuit when opened. O. Although the switch device 1 of a type such as a type (normally open type) and an A contact specification is illustrated, it is not limited thereto. In other words, the circuit opens when pressed, and closes when opened. C. The switch device 1 may be of a type (normally closed type), B contact specification, etc., and various switch devices such as a C contact specification type switch device 1 combining the A contact and the B contact. 1 can be developed.

  For example, in order to increase the degree of freedom of the circuit configuration when the electric element circuit 2 is attached, the wiring member 13 can be appropriately configured.

  FIG. 5 is a schematic front view schematically showing an example of the wiring member 13 provided in the switch device 1 described in the present application. The wiring member 13 illustrated in FIG. 5 shows another form of the wiring member 13 illustrated in FIG. The wiring member 13 illustrated in FIG. 5 has a configuration in which the wiring between the first external terminal 130a and the second attachment portion 131b is cut from the wiring member 13 illustrated in FIG. As described above, the degree of freedom in circuit design when the electric element circuit 2 is attached is improved by appropriately deforming the wiring member 13.

<Second switch device 1b>
FIG. 6 is a schematic perspective view showing an example of the appearance of the switch device 1 described in the present application. FIG. 7 is an exploded perspective view schematically showing an example of a part of the switch device 1 described in the present application. In FIG.6 and FIG.7, the 2nd switch apparatus 1b is shown as the switch apparatus 1 of this-application description. The 2nd switch apparatus 1b is a form in which the electric element circuit 2 is not attached in the 1st switch apparatus 1a. In the second switch device 1b, the same reference numerals are given to the same configurations as those of the first switch device 1a. Since the second switch device 1b has the same configuration as that of the first switch device 1a except that the electric element circuit 2 is not attached, the first switch device 1a is referred to for the description of each configuration. The description is omitted.

<Method for Manufacturing Switch Device 1>
Next, a method for manufacturing the switch device 1 described in the present application will be described. FIG. 8 is a flowchart schematically showing a process according to the method for manufacturing the switch device 1 described in the present application. When manufacturing the switch device 1, first, an assembly process is performed (step S1). The assembly process refers to a contact / separation mechanism, that is, a member such as the operation body 12 and the wiring member 13 is manufactured by a method such as pressing or molding (including procurement from the outside), and a part or all of the manufactured contact / separation mechanism. Is assembled and housed in a housing formed using the first housing 10 and the second housing 11. In addition, manufacture of each member is not restricted to a press or a shaping | molding, Other construction methods and also the procurement from the outside may be sufficient.

  By completing the assembly process, the second switch device 1b is manufactured. When the manufactured second switch device 1b is shipped, the manufacturing process is up to step S1.

  After the assembly process, an engaging member attaching process is performed (step S2). In the engaging member attaching step, the engaging member 20 which is a part of the electric element circuit 2 is attached to the housing formed by using the first housing 10 and the second housing 11 in the assembling process, and the engaging member is engaged. In this step, the engagement piece 201 of the member 20 is inserted, and the engagement piece 201 is engaged with the attachment portion 131 that is electrically connected to the wiring portion of the wiring member 13 in advance. Since the wiring member 13 is provided with a mounting portion 131 in advance as a slot for mounting the engaging member 20, the work required for the engaging member mounting step can be facilitated. That is, the switch device 1 and the method for manufacturing the switch device 1 described in the present application have excellent effects such as the ability to improve the workability related to the mounting of the electric element circuit 2.

  A circuit attachment process is implemented after an engagement member attachment process (step S3). In the circuit attaching step, the circuit member 21 is attached to the circuit attaching portion 202 of the engaging member 20 engaged with the attaching portion 131 in step S2 by a method such as reflow using solder. This is a step of electrically connecting the member 21. When the circuit member 21 is attached by a method such as reflow, flux may be scattered from the solder. However, in the manufacturing method of the switch device 1 described in the present application, the contact / separation mechanism, in particular, the fixed contact portion 132 and the movable contact that should eliminate contamination as much as possible are shielded by the first housing 10 and the second housing 11. As a result, contamination of the contact / separation mechanism can be suppressed. Therefore, it is possible to improve workability in processes such as reflow. That is, the switch device 1 and the method for manufacturing the switch device 1 described in the present application have excellent effects such as the ability to improve workability related to the mounting of the electric element circuit 2.

  By completing the circuit attachment process, the first switch device 1a is manufactured. That is, since the first switch device 1a can be manufactured by attaching the electrical element circuit 2 to the second switch device 1b, the manufacturing efficiency can be improved. In addition, the workability when attaching the electric element circuit 2 to the second switch device 1b is high, and the contact / separation mechanism is not contaminated, thereby producing the first switch device 1a with excellent quality. Workability can be improved.

  Further, in the assembly process, for a lot scheduled to be shipped as the first switch device 1a, it is possible to easily perform operations such as changing the processing method of the wiring member 13 as appropriate. The change of the processing method of the wiring member 13 means, for example, that a part of the wiring member 13 illustrated in FIG. 3 is cut to form the wiring member 13 illustrated in FIG.

<Circuit Configuration of First Switch Device 1a>
Next, an example of a circuit configuration of the first switch device 1a to which the electric element circuit 2 is attached will be described. 9A and 9B are circuit diagrams showing examples of part of the circuit configuration of the first switch device 1a described in the present application. 9A and 9B show an example in which the resistor R1 of the electric element circuit 2 is attached in series to the fixed contact portion 132 and the movable contact (hereinafter referred to as a switch SW) of the contact / separation mechanism of the first switch device 1a. Yes. FIG. 9A shows an example of the first switch device 1a with the A contact specification, and FIG. 9B shows an example of the first switch device 1a with the B contact specification.

  In the first switching device 1a illustrated in FIG. 9A, the COM-N. O. By measuring the resistance value between them, it is possible to detect a short circuit of an external device connected to the first switch device 1a. In the normal state, when the switch SW is open, the circuit is in an open state, and the resistance value is a resistance at the time of opening, that is, substantially infinite. When the switch SW is pressed, the circuit is closed and the resistance value is R1. In addition, when it is short-circuited, the resistance value becomes the resistance value at the time of short-circuiting (the resistance value varies depending on the short-circuited part). Therefore, a short circuit can be detected by measuring the resistance value.

  In the first switch device 1a illustrated in FIG. 9B, the COM-N. C. By measuring the resistance value between them, it is possible to detect a short circuit of an external device connected to the first switch device 1a. In the normal state, when the switch SW is opened, the circuit is closed and the resistance value is R1. When the switch SW is pressed, the circuit is opened and the resistance value is substantially infinite. In the case of a short circuit, the resistance value is the resistance value at the time of the short circuit. Therefore, a short circuit can be detected by measuring the resistance value.

  FIG. 10A and FIG. 10B are circuit diagrams showing an example of a part of the circuit configuration of the first switch device 1a described in the present application. 10A and 10B show an example in which the resistor R1 of the electric element circuit 2 is attached in parallel to the switch SW of the first switch device 1a. FIG. 10A shows an example of the first switch device 1a with A contact specifications, and FIG. 10B shows an example of the first switch device 1a with B contact specifications.

  In the first switch device 1a illustrated in FIG. 10A, COM-N. O. By measuring the resistance value between them, it is possible to detect disconnection of the external device connected to the first switch device 1a. In the normal state, when the switch SW is opened, the circuit is opened and the resistance value is R1. When the switch SW is pressed, the circuit is closed, and the resistance value is the resistance value Rsw (Rsw << R1) of the switch SW. In the case of disconnection, the resistance value is an open resistance, that is, infinite. Therefore, it is possible to detect disconnection by measuring the resistance value.

  In the first switch device 1a illustrated in FIG. 10B, the COM-N. C. By measuring the resistance value between them, it is possible to detect disconnection of the external device connected to the first switch device 1a. In the normal state, when the switch SW is open, the circuit is closed, and the resistance value is the resistance value Rsw (Rsw << R1) of the switch SW. When the switch SW is pressed, the circuit is opened and the resistance value is R1. In the case of disconnection, the resistance value is an open resistance, that is, infinite. Therefore, it is possible to detect disconnection by measuring the resistance value.

  FIG. 11A and FIG. 11B are circuit diagrams showing examples of a part of the circuit configuration of the first switch device 1a described in the present application. 11A and 11B, the resistor R1 of the electric element circuit 2 is attached in parallel to the switch SW of the first switch device 1a. O. The example which attached resistance R2 of the electric element circuit 2 in series between the ends is shown. FIG. 11A shows an example of the first switch device 1a with A contact specifications, and FIG. 11B shows an example of the first switch device 1a with B contact specifications.

  In the first switch device 1a illustrated in FIG. 11A, COM-N. O. By measuring the resistance value between them, it is possible to detect a short circuit and disconnection of an external device connected to the first switch device 1a. In the normal state, when the switch SW is opened, the circuit is opened and the resistance value is R1 + R2. When the switch SW is pressed, the circuit is closed and the resistance value is R2. In the case of a short circuit, the resistance value is the resistance value at the time of the short circuit. In the case of disconnection, the resistance value becomes an open resistance, that is, infinite. Therefore, it is possible to detect short circuit and disconnection by measuring the resistance value.

  In the first switch device 1a illustrated in FIG. 11B, the COM-N. C. By measuring the resistance value between them, it is possible to detect disconnection of the external device connected to the first switch device 1a. In the normal state, when the switch SW is opened, the circuit is closed and the resistance value is R2. When the switch SW is pressed, the circuit is opened and the resistance value is R1 + R2. In the case of short-circuiting, the resistance value is the resistance value at the time of short-circuiting. In the case of disconnection, the resistance value becomes an open resistance, that is, infinite. Therefore, it is possible to detect short circuit and disconnection by measuring the resistance value.

  FIG. 12A and FIG. 12B are circuit diagrams showing examples of a part of the circuit configuration of the first switch device 1a described in the present application. 12A and 12B show an example in which the retrofitting circuit 2 is attached so that the resistors R1 and R2 connected in series are in parallel with the switch SW of the first switch device 1a.

  FIG. 12A shows that between the resistors R1 and R2, N.I. O. N. between the resistor R2 and the switch SW. C. An example with an edge is shown. In the first switch device 1a illustrated in FIG. O. -N. C. By measuring the resistance value between them, it is possible to detect a short circuit and disconnection of an external device connected to the first switch device 1a. In the normal state, when the switch SW is opened, the circuit is closed and the resistance value is (R1 × R2) / (R1 + R2). Further, when the switch SW is pressed, the circuit is opened and the resistance value is R2. In the case of a short circuit, the resistance value is the resistance value at the time of the short circuit. In the case of disconnection, the resistance value becomes an open resistance, that is, infinite. Therefore, it is possible to detect short circuit and disconnection by measuring the resistance value.

  12B shows the COM end from between the resistor R1 and the switch SW, and N. O. An example with an edge is shown. In the first switch device 1a illustrated in FIG. 12B, the COM-N. O. By measuring the resistance value between them, it is possible to detect a short circuit and disconnection of an external device connected to the first switch device 1a. In the normal state, when the switch SW is opened, the circuit is closed and the resistance value is (R1 × R2) / (R1 + R2). When the switch SW is pressed, the circuit is opened and the resistance value is R1. In the case of a short circuit, the resistance value is the resistance value at the time of the short circuit. In the case of disconnection, the resistance value becomes an open resistance, that is, infinite. Therefore, it is possible to detect short circuit and disconnection by measuring the resistance value.

  Next, an example will be described in which the circuit configuration described above is connected to an external device such as an automobile electrical system, and the state of the circuit is detected by a detection voltage. FIG. 13 is a schematic diagram schematically showing an example of a circuit configuration using the first switch device 1a described in the present application. The circuit shown in FIG. 13 shows a configuration example in which the first switch device 1a having the circuit configuration illustrated in FIG. 11B is connected to an external device such as an automobile electrical component using a 12V DC power supply. The COM terminal is connected to the ground potential (GND). C. The end is connected to a pull-up resistor Rpullup. N. C. The detection voltage Signal is taken between the end and the pull-up resistor Rpullup. The resistance values of the resistor R1, the resistor R2, and the pull-up resistor Rpullup are 1580Ω, 732Ω, and 1050Ω, respectively.

  In the circuit illustrated in FIG. 13, when the switch SW is opened, the circuit is in a closed state, and the resistance value is R2 + Rpullup of 1782Ω. In this case, the detection voltage Signal is 4.93V. When the switch SW is pressed, the circuit is in an open state, and the resistance value is 3362Ω of R1 + R2 + Rpullup. In this case, the detection voltage Signal is 8.25V. In the figure, when the section indicated by the alternate long and short dash line is short-circuited, the resistance is Rpullup only, and the detection voltage Signal is 0V. When the section indicated by “x” in the figure is disconnected, no current flows, so the detection voltage Signal is 12V.

  As described above, the detection voltage Signal takes a value of about 5 V or about 8 V depending on the open / close state of the circuit in the normal state, takes a value of 0 V in the short circuit state (short circuit), and 12 V in the disconnection state. As described above, the open / close state of the first switch device 1a and the state of the external device can be detected by the detection voltage Signal.

  As described above, the switch device 1 described in the present application can make the first switch device 1a and the second switch device 1b separately with substantially the same configuration. In particular, in the engaging member attaching step and the circuit attaching step in which the electric element circuit 2 is attached to the second switch device 1b to form the first switch device 1a, the inside of the switch device 1 is shielded by the prior assembly process. Therefore, it is possible to suppress an adverse effect on the main part during the work. For example, the inside of the switch device 1 is not contaminated by the scattering of flux when the circuit member 21 is attached. Therefore, it is possible to improve the workability in the process, and there are excellent effects.

  The present invention is not limited to the embodiments described above, and can be implemented in various other forms. Therefore, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The technical scope of the present invention is described by the scope of claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  For example, the assembly process exemplified in the above embodiment can be developed into various forms as long as each member is protected from the outside in the following processes. As a specific example, in order to protect against the scattering of flux that may occur during the engaging member attaching step and the circuit attaching step, a plate-like protective shield is attached in the attachment direction of the electric element circuit 2, and so on. It is possible to develop into a form.

  Moreover, although the form which uses the engaging member 20 and the circuit member 21 which were formed separately as the electric element circuit 2 was shown in the said embodiment, this invention is not limited to this, The electric element circuit 2 integrally formed May be used. Furthermore, the resistance element itself may be used as the electric element circuit 2. Specifically, the pair of terminals of the resistance element can be used as the engaging member 20, and the terminal of the resistance element can be directly attached to the attachment portion 131 of the wiring member 13.

  Further, in the above-described embodiment, an embodiment has been described in which one or a plurality of resistance elements are used as the electric element circuit 2 to detect an abnormality such as a short circuit or a disconnection. Circuit 2 can be used. For example, a circuit for various applications such as overcurrent prevention and current smoothing can be used as the electric element circuit 2.

DESCRIPTION OF SYMBOLS 1 Switch apparatus 1a 1st switch apparatus 1b 2nd switch apparatus 10 1st housing | casing (casing)
11 Second housing (housing)
12 Operation body 13 Wiring member 130 External terminal 131 Attachment portion 132 Fixed contact portion 2 Electrical element circuit 20 Engagement member 21 Circuit member

Claims (7)

A switch device comprising a plurality of external terminals to which an external device can be connected, wherein the wiring for electrically connecting the external terminals is contacted / separated by a contact / separation mechanism,
A conductive wiring member for forming the wiring;
The wiring member has a mounting part to which an electrical element circuit including an electrical element that constitutes a circuit in combination with the external device can be mounted separately from the external terminal,
The switch device is characterized in that the attachment portion is formed so as to be engageable with an engagement member included in the electric element circuit. It is a switch apparatus of Claim 1, Comprising: The electric element circuit connected to the said attaching part is further provided. The switch apparatus characterized by the above-mentioned. The switch device according to claim 2,
The electrical element circuit is
An engagement member formed to be engageable with the attachment portion in an electrically connected state;
A circuit member including one or a plurality of electrical elements electrically connected to the engagement member,
The electrical element circuit is attached in a state where the engagement member is engaged with the attachment portion. The switch device according to claim 3,
The switch device, wherein the engagement member and the circuit member of the electric element circuit are formed separately. The switch device according to any one of claims 2 to 4,
A housing that accommodates part or all of the wiring and the contact / separation mechanism;
The electric device circuit is attached to the attachment portion from the outside of the housing. A manufacturing method of a switch device comprising a plurality of external terminals to which an external device can be connected, wherein the wiring for electrically connecting the external terminals is contacted and separated by a contact / separation mechanism,
An engaging member attaching step for attaching an electric element circuit to an attaching portion connected in advance to the wiring of the switch device. A manufacturing method of a switch device comprising a plurality of external terminals to which an external device can be connected, wherein the wiring for electrically connecting the external terminals is contacted and separated by a contact / separation mechanism,
An engaging member attaching step of engaging the engaging member with the attaching portion connected in advance to the wiring of the switch device to electrically connect the attaching portion and the engaging member;
A circuit attachment step of attaching a circuit member including one or a plurality of electric elements to the engagement member engaged with the attachment portion and electrically connecting the engagement member and the circuit member. Manufacturing method for the switch device.

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