CN113748477A

CN113748477A - Selector switch and method for manufacturing connection terminal

Info

Publication number: CN113748477A
Application number: CN202080026653.0A
Authority: CN
Inventors: 佐藤贵仁
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 2019-04-16
Filing date: 2020-03-16
Publication date: 2021-12-03
Also published as: JPWO2020213328A1; JP7185025B2; DE112020001967T5; WO2020213328A1

Abstract

The invention provides a selector switch with a connecting terminal having sufficient strength and a method for manufacturing the connecting terminal having sufficient strength. The selector switch is a selector switch including a holding portion and a connection terminal connected to a counterpart terminal, the connection terminal having: a base portion held by the holding portion; and an annular extension portion extending in a direction away from the base portion, the extension portion having an insertion hole penetrating along an arrival direction of an arrival of a counterpart terminal and into which the counterpart terminal is inserted, an inclined portion provided at a side of a periphery of the insertion hole with respect to an extension direction of the extension portion and inclined toward the arrival direction, and a protruding portion provided at the inclined portion and protruding toward an inside of the insertion hole.

Description

Selector switch and method for manufacturing connection terminal

Technical Field

Embodiments of the present invention relate to a selector switch and a method of manufacturing a connection terminal.

Background

Conventionally, in a switch mounting structure in which a switch is fixed to a mounting portion and a contact of the switch is connected to a substrate located on the mounting portion side, there is a switch mounting structure in which a connection terminal to which the contact of the switch is connected protrudes from a side surface of a housing.

The plate-like connection terminal protruding from the side surface of the housing changes its orientation at a right angle downward, and the lower end thereof is bent at a right angle to the side, and the bent end portion is provided with a mounting hole. When the switch is disposed at the mounting portion, the terminal on the substrate of the counterpart device is fitted into the mounting hole of the connection terminal of the switch, thereby fixing the switch to the mounting portion (see, for example, patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 11-053975

Disclosure of Invention

Problems to be solved by the invention

However, in the conventional switch mounting structure, the tip end portion of the connection terminal is bent at a right angle to the side, and therefore the tip end portion does not have sufficient strength. Therefore, when the terminal on the substrate of the counterpart device is fitted into the mounting hole of the distal end portion, the distal end portion may be bent upward, and the terminal of the counterpart device may not be fitted.

Accordingly, an object of the present invention is to provide a changeover switch in which a connection terminal has a sufficient strength, and a method of manufacturing a connection terminal having a sufficient strength.

Means for solving the problems

A changeover switch according to an embodiment of the present invention is a changeover switch including a holding portion and a connection terminal connected to a counterpart terminal, the connection terminal including: a base portion held by the holding portion; and an annular extension portion that extends in a direction away from the base portion, and that includes an insertion hole that penetrates along an arrival direction of an arrival of a counterpart terminal and into which the counterpart terminal is inserted, an inclined portion that is provided on a side of a periphery of the insertion hole with respect to an extension direction of the extension portion and that is inclined toward the arrival direction, and a protruding portion that is provided on the inclined portion and protrudes toward an inside of the insertion hole.

Effects of the invention

The invention provides a switch with a connecting terminal having enough strength and a manufacturing method of the connecting terminal having enough strength.

Drawings

Fig. 1 is a diagram showing a state in which the changeover switch 100 is attached to a holder 200 of a counterpart device.

Fig. 2 is a diagram showing a state in which the changeover switch 100 is attached to the holder 200 of the partner device.

Fig. 3 is a diagram showing a state where the cover 140 is detached from the diverter switch 100 according to the embodiment.

Fig. 4 is a view showing a cross section taken along line a-a of fig. 3.

Fig. 5 is a cross-sectional view taken along line C-C of fig. 1.

Fig. 6 is a view showing the lower surface side of the cover 140.

Fig. 7 is a diagram illustrating a manufacturing process of the connection terminal 130.

Detailed Description

Next, an embodiment to which the changeover switch and the method for manufacturing the connection terminal of the present invention are applied will be described.

< embodiment >

Fig. 1 and 2 are views showing a state in which the selector switch 100 is attached to the holder 200 of the counterpart device. The following description will be made using an XYZ rectangular coordinate system, and the planar view is an XY plane. For convenience of explanation, the following description will be given with + Z side being upper and-Z side being lower, but the general upper and lower relationships are not shown.

The selector switch 100 includes a switch unit 110, a holding unit 120, two connection terminals 130, and a cover 140. Next, description will be made with reference to fig. 3 in addition to fig. 1 and 2. Fig. 3 is a diagram showing a state where the cover 140 is detached from the diverter switch 100 according to the embodiment.

The switch unit 110 includes a switch body 111 and a button 112. The switch main body 111 houses a switch unit 111A. The button 112 can be pressed in the X direction. The switch unit 111A is configured to include two terminals connected to the two connection terminals 130, and is configured to switch the two terminals from a non-conductive state (off state) to a conductive state (on state) when the button 112 is pressed, and to switch the two terminals from the conductive state (on state) to the non-conductive state (off state) when the button 112 is not pressed.

The holding portion 120 is a resin plate-like member that holds the two connection terminals 130, and serves as a cover for the switch main body 111 on the + X direction side. The two connection terminals 130 protrude from the + X direction side surface of the holding portion 120 in the + X direction.

The two connection terminals 130 are provided, and extend in the + X direction from the surface of the holding portion 120 on the + X direction side. The connection terminals 130 are connected to the two terminals 210 of the counterpart device, respectively. The specific structure of the connection terminal 130 will be described later.

The cap 140 has a cap body 141 and a flange 142. The cap body 141 is a portion of the cap 140 covering the connection terminal 130, and the flange 142 is mounted on the-X direction side of the cap body 141 and protrudes in the ± Y direction and the + Z direction.

The counterpart device is a device to which the changeover switch 100 is attached, and includes a holder 200 and two terminals 210. In fig. 1, the connection terminal 130 is covered by the cover 140 covering the holder 200, and the cover 140 is removed in fig. 2.

The holder 200 includes a holder body 201, engaging

portions

202 and 203, an opening portion 204, and a packing (packing) 205. The holder body 201 is a rectangular parallelepiped housing, and has engaging

portions

202 and 203 and an opening 204 on an upper surface.

The engaging portions 202 are a pair of engaging portions extending upward from the holder main body 201, and fix the switch main body 111 at claw-like portions protruding inward from the upper end. The engaging portion 203 is a rail-shaped engaging portion extending upward from the holder main body 201, and is held by being inserted from above with the holding portion 120 and the flange 142 of the cover 140 aligned. The opening 204 is provided to protrude the two terminals 210, and the two terminals 210 are surrounded by a waterproof seal 205 inside the opening 204.

The terminal 210 is an example of a counterpart terminal. Two terminals 210 are provided and connected to a control unit of the other device. Since the two terminals 210 are connected to the two connection terminals 130, the control unit or the like of the other device can detect the on or off state of the changeover switch 100.

When the selector switch 100 is mounted on the holder 200, the selector switch 100 is aligned from the upper side of the holder 200, and the switch main body 111 is fitted into the engagement portion 202, and the holding portion 120 and the flange 142 are fitted into the engagement portion 203.

Next, the structure of the connection terminal 130 will be explained. Here, the description will be given with reference to fig. 4 in addition to fig. 1 to 3. Fig. 4 is a view showing a cross section taken along line a-a of fig. 3. The two connection terminals 130 have the same structure.

The connection terminal 130 has a base portion 131 and an extension portion 132. The connection terminal 130 is a metal product, and is manufactured by punching a sheet metal and then performing press working. The connection terminal 130 is integrated with the holding portion 120 manufactured by insert molding.

The base 131 is a portion protruding from the holding portion 120 in the + X direction. An extension 132 is continuously provided on the + X direction side of the base 131. The base 131 holds the extension 132.

The extension portion 132 has an insertion hole 132A, a connection portion 132B, an inclined portion 132C, a tip portion 132D, a protruding portion 132E, and a step portion 132F.

The extension 132 has a wider width in the Y direction than the base 131, and has an annular shape in plan view by having an insertion hole 132A at the center. The insertion hole 132A penetrates the extension portion 132 in the arrival direction (-Z direction) of the terminal 210.

The connecting portion 132B is a portion connected to the root of the extension 132 of the base 131. The connection portion 132B is a portion parallel to the XY plane in the extension portion 132 together with the leading end portion 132D. The two inclined portions 132C are connected to the connection portion 132B.

The inclined portions 132C are portions provided on both sides of the sides (Y direction) of the extending direction (X direction) of the extending portion 132 in the periphery of the insertion hole 132A and inclined toward the arrival direction (-Z direction) of the terminal 210. That is, the inclined portion 132C has two on the + Y direction side and the-Y direction side, extending in the X direction. Two inclined portions 132C are provided on both side portions of the insertion hole 132A between the connecting portion 132B and the leading end portion 132D.

As shown in fig. 4, the inclined portion 132C is inclined in a V shape (in an upside-down direction in the + Z direction, an inverted V shape) when viewed from the extending direction (X) direction of the extending portion 132. The inclined portion 132C is formed by bending both ends in the Y direction of the extended portion 132 in a flat plate shape by press working, and the extended portion 132 in the flat plate shape is formed with an insertion hole 132A, a connection portion 132B, a tip portion 132D, a protruding portion 132E, and a stepped portion 132F by press working.

The inclined portion 132C bent in a V-shape is provided to improve the strength of the portion into which the terminal 210 is inserted. More specifically, the terminal 210 comes from the-Z direction, and thus serves to improve the bending rigidity of the connection terminal 130 toward the Z direction, so that the terminal 210 is reliably inserted into the insertion hole 132A.

The tip portion 132D is a portion of the extension portion 132 that is located closest to the + X direction side, and is a portion of the extension portion 132 that is parallel to the XY plane together with the base portion 131.

The protruding portion 132E is a portion provided at the center of the inclined portion 132C in the X direction and protruding inward of the insertion hole 132A in a plan view. The protruding portion 132E is a portion protruding so that the inclined portion 132C is bent inward of the insertion hole 132A.

The protruding portion 132E is provided on the inclined portion 132C, and therefore protrudes obliquely upward toward the insertion hole 132A when viewed from the X direction. Like the inclined portion 132C, the protruding portion 132E is inclined in a V-shape (in an inverted V-shape in the vertical direction in the + Z direction) when viewed from the extending direction (X) of the extending portion 132 as shown in fig. 4.

The step portion 132F is a portion provided in the most protruding section of the protruding portion 132E and formed with a step recessed in the-B direction in the thickness direction of the protruding portion 132E indicated by an arrow B in fig. 4. The B direction is the same as the Z direction before the inclined portion 132C is formed by press working. The direction from the start point of the arrow toward the front end in the direction B is the-direction, and the opposite direction is the-B direction.

The step 132F is lower than the inverted V-shaped protrusion 132E in the-B direction, and the corner 132F1 on the lower surface side protrudes inward of the insertion hole 132A than when the step 132F is not provided.

In the right enlarged view of fig. 4, the position of the lower surface of the protruding portion 132E in the case where the step portion 132F is not provided is indicated by a broken line. In the case where the step portion 132F is not provided, the width in the Y direction of each of the two facing protrusions 132E is W1, and the width in the Y direction of each of the two facing step portions 132F is W2(< W1). Here, the width W1 is narrower than the width of the terminal 210 in the Y direction.

Therefore, by providing the step portion 132F, the width of the insertion hole 132A in the Y direction can be made narrower, and the connection terminal 130 and the terminal 210 can be brought into contact with each other with higher reliability. Because the terminal 210 is inserted into a portion where the width in the Y direction is made narrower by the step portion 132F.

Fig. 5 is a cross-sectional view taken along line C-C of fig. 1. The bracket 200 is omitted in fig. 5. The cover 140 has:

projections

145A, 145B, the housing 140A housing the connection terminal 130 therein being provided at upper and lower portions of the distal end portion 132D of the connection terminal 130; a partition 146 provided between the two connection terminals 130 on the bottom surface of the housing portion 140A; and a guide flange 147 on the lower surface side. A seal 149 is fitted to the outer peripheral surface of the guide flange 147, and the seal 149 is fitted to the seal 205. The protruding

portions

145A and 145B are examples of the contact portion. The seal 149 is an example of a seal portion.

The distance between the lower surface of the projection 145A and the upper surface of the projection 145B is set to be larger than the thickness of the connection terminal 130 (the thickness of the distal end portion 132D), and since almost no stress in the Z direction is generated in the connection terminal 130 in a state where the terminal 210 is inserted into the connection terminal 130 as shown in fig. 5, a gap is generated between the lower surface of the projection 145A and the upper surface of the projection 145B above and below the distal end portion 132D.

When the terminal 210 is inserted into the connection terminal 130, the terminal 210 presses and expands the protruding portion 132E and the stepped portion 132F facing both sides of the insertion hole 132A in the Y direction, and therefore, a stress in the + Z direction is applied to the connection terminal 130. At this time, since the upper surface of the distal end portion 132D abuts against the lower surface of the projection 145A, the displacement of the connection terminal 130 up to the lower surface of the projection 145A can be suppressed.

When the terminal 210 is pulled out from the connection terminal 130, the terminal 210 is pulled out in the-Z direction while being in contact with the protruding portion 132E and the stepped portion 132F facing both sides of the insertion hole 132A, thereby applying a stress in the-Z direction to the connection terminal 130. At this time, the lower surface of the tip portion 132D abuts against the upper surface of the projection portion 145B, and therefore, displacement of the connection terminal 130 up to the upper surface of the projection portion 145B can be suppressed.

A partition wall 146 is provided on the bottom surface of the storage section 140A. The height of the partition wall 146 is higher than the end of the inclined portion 132C in the Y direction. Therefore, when the two terminals 210 are inserted into the two connection terminals 130, for example, the selector switch 100 is inserted into the holder 200 in a state of being inclined at an angle with respect to the Z direction, and thus, when one of the connection terminals 130 swings to the other connection terminal 130 side, contact between the two connection terminals 130 can be suppressed.

Fig. 6 is a view showing the lower surface side of the cover 140. The cover 140 includes two hole portions 148 provided inside the guide flange 147 located on the lower surface side, and a seal 149 provided on the outer peripheral portion of the guide flange 147.

The guide flange 147 is a protruding portion, and when the selector switch 100 is mounted on the holder 200 of the counterpart device, the selector switch 100 is guided to a predetermined position with respect to the holder 200 and inserted into the opening 204 (see fig. 2) located on the upper surface of the holder 200. A seal 149 is fitted to the outer peripheral portion of the guide flange 147. When the holding portion 120 and the flange 142 are fitted into the engaging portion 203 from above, the switch 100 is pushed downward, and the guide flange 147 is inserted into the opening 204, the switch body 111 is fixed to the holder 200 in a state of being engaged with the claw of the engaging portion 202.

The hole 148 is provided to communicate the lower surface of the cover 140 with the housing portion (see fig. 5), and to insert and guide the terminal 210 of the counterpart device into the housing portion 140A. The hole 148 is located directly below the insertion hole 132A of the connection terminal 130 in a plan view. By providing such a hole 148, the terminal 210 can be more reliably guided toward the insertion hole 132A of the connection terminal 130 in the housing 140A.

The seal 149 is fitted into the inner peripheral side of the seal 205 (see fig. 2). Since the seal 149 is provided on the diverter switch 100 and the seal 205 is provided on the holder 200 of the counterpart device, when the diverter switch 100 is attached from the upper side of the holder 200, the switch body 111 is fitted into the engagement portion 202 (see fig. 2), and the holding portion 120 and the flange 142 are fitted into the engagement portion 203 (see fig. 2), the guide flange 147 is fitted into the opening portion 204, and at this time, the seal 149 and the seal 205 are fitted to seal the diverter switch 100 and the holder 200.

Fig. 7 is a diagram illustrating a manufacturing process of the connection terminal 130. First, as shown in fig. 7(a), the sheet metal is punched to produce the base portion 131 and the extension portion 132M 1. The extension 132M1 has an insertion hole 132A, a connection portion 132B, a peripheral portion 132C1, a tip portion 132D, and a protrusion 132E. The extension 132M1 has a peripheral portion 132C1 instead of the inclined portion 132C, and has no step portion 132F, as compared with the extension 132 finally manufactured. The peripheral portion 132C1 is a portion before the press working for producing the inclined portion 132C.

Then, the projecting portion 132E of the extending portion 132M1 shown in fig. 7(a) is subjected to press working, thereby producing a stepped portion 132F as shown in fig. 7 (B). The step portion 132F is a portion of the protruding portion 132E that protrudes the most toward the insertion hole 132A side, which is shifted by a predetermined thickness in the-Z direction. Thus, extension 132M1 shown in fig. 7(a) becomes extension 132M 2.

Finally, press working is performed so that the peripheral portion 132C1 of the extension portion 132M2 shown in fig. 7(B) is bent in the-Z direction with respect to the connection portion 132B and the distal end portion 132D, and the extension portion 132M2 shown in fig. 7(B) becomes the extension portion 132, thereby completing the connection terminal 130 shown in fig. 7 (C).

As described above, the connection terminal 130 is provided with the insertion hole 132A in the extension portion 132 on the front end side (+ X direction side) of the base portion 131 held by the holding portion 120, and the inclined portions 132C on both sides of the insertion hole 132A in the Y direction. Since both ends of the two inclined portions 132C included in one connection terminal 130 in the X direction are connected to and closed by the connection portion 132B and the tip portion 132D, the extending portion 132 is an annular member, and both sides in the Y direction are the inclined portions 132C bent in the-Z direction.

Since the connection terminal 130 has the annular extension portion 132 having a YZ cross-sectional shape in a V shape, the bending rigidity in the X direction, the Y direction, and the Z direction is dramatically improved as compared with the case where the inclined portion 132C is not provided.

Therefore, the changeover switch 100 in which the connection terminal 130 has sufficient strength and the method of manufacturing the connection terminal 130 having sufficient strength can be provided.

Further, since the connection terminal 130 extends from the holding portion 120 in the X direction, the overall dimension in the Z direction of the diverter switch 100 can be reduced, unlike a structure in which the orientation is changed in the-Z direction as in a conventional switch mounting structure.

Further, since the step portion 132F is provided in the projecting portion 132E of the extending portion 132, the distance between the insertion holes 132A can be narrowed by the step of the step portion 132F, and therefore, the contact pressure between the connection terminal 130 and the terminal 210 can be increased, and the electrical reliability can be further improved.

Since the step portion 132F is provided in the protruding portion 132E included in the inclined portion 132C, when the terminal 210 is inserted into the insertion hole 132A, the corner portion 132F1 (see the enlarged view of fig. 4) on the lower surface side of the step portion 132F contacts the side surface parallel to the XZ plane of the terminal 210. Therefore, the contact surface with the terminal 210 can be reduced, and even when an adhering object or the like is present on the surface of the terminal 210, the corner portion 132F1 can be removed from the side surface of the terminal 210, and the connection terminal 130 and the terminal 210 can be electrically connected with higher reliability.

The selector switch 100 can be mounted by merely fitting it into the holder 200 from above. In this case, the seal 149 and the seal 205 are fitted to each other only by inserting the guide flange 147 of the lower surface of the cover 140 into the opening 204, and the switch 100 and the holder 200 can be sealed. Therefore, the diverter switch 100 can be easily attached to the holder 200 and can be sealed by only attachment.

Although the above description has been made of the manner in which the step 132F is provided in the extension portion 132 of the connection terminal 130, the step 132F may not be provided when a sufficient contact pressure between the connection terminal 130 and the terminal 210 can be ensured without providing the step 132F.

Further, the embodiment in which the changeover switch 100 includes two connection terminals 130 has been described above, but the number of the connection terminals 130 may be one.

Further, although the case 140 has been described above as having the

contact portions

145A and 145B and the partition wall 146, the case 140 may not have at least one of the

contact portions

145A and 145B and the partition wall 146.

Further, although the case 140 has been described above as having the guide flange 147, the case 140 may not have the guide flange 147.

The selector switch and the method of manufacturing the connection terminal according to the exemplary embodiment of the present invention have been described above, but the present invention is not limited to the specifically disclosed embodiment, and various modifications and changes can be made without departing from the claims.

In addition, the international application is based on and claims priority from japanese patent application No. 2019-078005 filed on 16/4/2019, the entire contents of which are incorporated by reference.

Description of the reference numerals

100 … change-over switch; 110 … switching part; 120 … holding part; 130 … connection terminal; 131 … base part; 132 … extension; 132A … is inserted into the hole; a 132C … inclined portion; a 132E … projection; a 132F … step; 140 … cover; 145A, 145B … protrusions; 146 … partition wall; 147 … guide flange; 200 … a bracket; 210 … terminal.

Claims

1. A changeover switch comprising a holding portion and a connection terminal connected to a counterpart terminal,

the connection terminal has:

a base portion held by the holding portion; and

the annular extension portion is an extension portion extending in a direction away from the base portion, and has an insertion hole through which a counterpart terminal is inserted along an arrival direction of the counterpart terminal, an inclined portion provided at a side of a periphery of the insertion hole with respect to an extension direction of the extension portion and inclined toward the arrival direction, and a protruding portion provided at the inclined portion and protruding toward an inside of the insertion hole.

2. The diverter switch according to claim 1,

the protruding portion has a step portion formed by being pressed toward the arrival direction in a thickness direction of the protruding portion.

3. The diverter switch according to claim 1 or 2,

the extension portion contacts the counterpart side terminal at a corner portion of the protrusion portion.

4. The diverter switch according to any of claims 1 to 3,

the inclined portions are two inclined portions provided on both sides of the insertion hole on a side with respect to an extending direction of the extending portion,

the two inclined portions are inclined in a V-shape when viewed from the extending direction.

5. The diverter switch according to any of claims 1 to 4,

the switch further includes a housing that houses the connection terminal,

the housing has an abutting portion provided in the coming direction and abutting when the counterpart terminal is inserted or removed.

6. The diverter switch according to any of claims 1 to 4,

the switch further includes a housing that houses the connection terminal,

two connecting terminals are arranged in the shell in an arrayed manner,

the housing has a partition wall provided between the two connection terminals.

7. The diverter switch according to claim 5 or 6,

the housing further has:

an opening portion into which the counterpart terminal is inserted toward the connection terminal;

and a sealing part provided in the opening part and sealing a space between the sealing part and a counterpart side housing that accommodates at least a part of the counterpart side terminal.

8. The diverter switch according to any of claims 5 to 7,

the housing further has a guide flange guiding the counterpart terminal toward the insertion hole of the extension.

9. A method of manufacturing a connection terminal having a base portion and an extension portion extending in a direction away from the base portion,

the manufacturing method comprises the following steps:

a step of punching the base and an annular extension from a sheet metal, the extension being continuous with the base and having an insertion hole that penetrates along an arrival direction of a counterpart terminal and into which the counterpart terminal is inserted, and a protruding portion that protrudes inward of the insertion hole;

and a step of forming an inclined portion that is provided at a side of the periphery of the insertion hole with respect to an extending direction of the extended portion and is inclined in the arrival direction by press working the extended portion after punching.