Switch and connection terminal manufacturing method

Abstract

The present invention provides a switching switch having a connection terminal with sufficient strength, and a method for manufacturing a connection terminal with sufficient strength. The switching switch is a switching switch including a holding portion and a connection terminal connected to a terminal on the other side, wherein the connection terminal has: a base portion held by the holding portion; and an annular extension portion extending in a direction away from the base portion, having an insertion hole penetrating along the arrival direction of the terminal on the other side and for inserting the terminal on the other side, an inclined portion provided on the periphery of the insertion port and inclined toward the arrival direction relative to the extension direction of the extension portion, and a protrusion provided on the inclined portion and protruding toward the inner side of the insertion hole.

Description

Technical Field

[0001] Embodiments of the present invention relate to a method for manufacturing a switch and a connection terminal. Background Art

[0002] Conventionally, in a switch mounting structure in which a switch is fixed to a mounting portion and contacts of the switch are connected to a substrate located on the mounting portion side, there is a switch mounting structure in which connection terminals to which contacts of the switch are connected protrude from a side surface of a housing.

[0003] The plate-shaped connection terminal protruding from the side of the housing changes its direction at a right angle downward, and the front end is bent at a right angle to the side at the lower end, and a mounting hole is provided in the front end bent to the side. When the switch is arranged at the mounting position, the terminal on the substrate of the other side device is inserted into the mounting hole of the connection terminal of the switch, thereby fixing the switch to the mounting position (for example, refer to Patent Document 1).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 11-053975 Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, in the conventional switch mounting structure, the front end portion of the connection terminal is bent at a right angle to the side, so the front end portion does not have sufficient strength. Therefore, when the terminal on the substrate of the other device is inserted into the mounting hole of the front end portion, there is a concern that the front end portion may be bent upward and the terminal of the other device may not be inserted.

[0009] Therefore, an object of the present invention is to provide a switch having a connection terminal having sufficient strength, and a method for manufacturing a connection terminal having sufficient strength.

[0010] Means for solving problems

[0011] A switching switch according to an embodiment of the present invention is a switching switch including a retaining portion and a connecting terminal connected to a terminal on the other side, the connecting terminal having: a base portion retained by the retaining portion; and an annular extending portion, which is an extending portion extending in a direction away from the base portion, and has an insertion hole that penetrates along an arrival direction of the terminal on the other side and into which the terminal on the other side is inserted, an inclined portion that is provided around the insertion port and is laterally inclined relative to the extension direction of the extending portion and is inclined toward the arrival direction, and a protruding portion that is provided on the inclined portion and protrudes toward the inner side of the insertion hole.

[0012] Effects of the Invention

[0013] The present invention can provide a switch having a connection terminal having sufficient strength, and a method for manufacturing a connection terminal having sufficient strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure shows a state where the changeover switch 100 is mounted on the bracket 200 of the counterpart device.

[0015] Figure 2 The figure shows a state where the changeover switch 100 is mounted on the bracket 200 of the counterpart device.

[0016] Figure 3 This is a diagram showing a state where the cover 140 is removed from the switch 100 according to the embodiment.

[0017] Figure 4 It means along Figure 3 Figure 2 is a cross-section diagram observed along line AA.

[0018] Figure 5 It means along Figure 1 Figure 4 is a cross-section diagram observed along the CC line.

[0019] Figure 6 It is a diagram showing the lower surface side of the cover 140.

[0020] Figure 7 The diagram shows a manufacturing process of the connection terminal 130 . DETAILED DESCRIPTION

[0021] Next, embodiments of a method for manufacturing a selector switch and a connecting terminal to which the present invention is applied will be described.

[0022] <Implementation Method>

[0023] Figure 1 and Figure 2 1 is a diagram showing a state where the switch 100 is mounted on the bracket 200 of the other device. The following description uses the XYZ orthogonal coordinate system, and the so-called top view refers to observation from the XY plane. In addition, for the sake of convenience, the following description assumes that the +Z side is up and the -Z side is down, but this does not represent a normal up-down relationship.

[0024] The switch 100 includes a switch portion 110, a holding portion 120, two connection terminals 130, and a cover 140. Figure 1 and Figure 2 Based on this, we also use Figure 3 Provide explanation. Figure 3 This is a diagram showing a state where the cover 140 is removed from the switch 100 according to the embodiment.

[0025] The switch unit 110 includes a switch body 111 and a button 112. The switch body 111 has a built-in switch unit 111A. The button 112 can be pressed in the X direction. The switch unit 111A is configured to have two terminals connected to the two connection terminals 130 built-in, and when the button 112 is pressed, the two internal terminals are switched from a non-conductive state (disconnected state) to a conductive state (connected state), and when the button 112 is not pressed, the two internal terminals are switched from a conductive state (connected state) to a non-conductive state (disconnected state).

[0026] The holding portion 120 is a plate-shaped member made of resin that holds the two connection terminals 130 and serves as a cover on the +X direction side of the switch body 111. The two connection terminals 130 protrude in the +X direction from the surface of the holding portion 120 on the +X direction side.

[0027] Two connection terminals 130 are provided, extending in the +X direction from the surface on the +X direction side of the holding portion 120. The connection terminals 130 are connected to two terminals 210 of the counterpart device, respectively. The specific structure of the connection terminals 130 will be described later.

[0028] The cover 140 includes a cover body 141 and a flange 142. The cover body 141 is a portion of the cover 140 that covers the connection terminal 130, and the flange 142 is attached to the -X direction side of the cover body 141 and protrudes in the ±Y direction and the +Z direction.

[0029] The other device is a device equipped with a switch 100, including a bracket 200 and two terminals 210. Figure 1 In the embodiment, the connection terminal 130 is covered by the cover 140 covering the bracket 200. Figure 2 The middle cover 140 is removed.

[0030] The holder 200 includes a holder body 201, engaging portions 202 and 203, an opening 204, and a packing 205. The holder body 201 is a rectangular parallelepiped housing, and the engaging portions 202 and 203 and the opening 204 are provided on the upper surface.

[0031] The engaging portion 202 is a pair of engaging portions extending upward from the bracket body 201, and the switch body 111 is fixed at the claw-shaped portion protruding inward from the upper end. The engaging portion 203 is a rail-shaped engaging portion extending upward from the bracket body 201, and is retained by being inserted from above in a state where the retaining portion 120 and the flange 142 of the cover 140 are aligned. The opening 204 is provided to allow the two terminals 210 to protrude, and the two terminals 210 are surrounded by a waterproof seal 205 inside the opening 204.

[0032] Terminal 210 is an example of a terminal on the other side. Two terminals 210 are provided and connected to the control unit of the other side device. The two terminals 210 are connected to the two connection terminals 130 respectively, so the control unit of the other side device can detect the on or off state of the switch 100.

[0033] When mounting the switch 100 on the bracket 200 , the switch 100 is aligned from the upper side of the bracket 200 , and the switch 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 .

[0034] Next, the structure of the connection terminal 130 will be described. Figure 1 to Figure 3 Based on this, we also use Figure 4 Provide explanation. Figure 4 It means along Figure 3 The two connection terminals 130 have the same structure.

[0035] The connection terminal 130 has a base portion 131 and an extension portion 132. The connection terminal 130 is a metal product, and is produced by punching a sheet metal and then performing a press working. The connection terminal 130 is integrated with the holding portion 120 produced by insert molding.

[0036] The base portion 131 is a portion that protrudes in the +X direction from the holding portion 120. The extending portion 132 is provided continuously on the +X direction side of the base portion 131. The base portion 131 holds the extending portion 132.

[0037] The extension portion 132 has an insertion hole 132A, a connection portion 132B, an inclined portion 132C, a front end portion 132D, a protruding portion 132E, and a stepped portion 132F.

[0038] The extension portion 132 is wider in the Y direction than the base portion 131 and has an insertion hole 132A at the center, thereby having an annular shape in a plan view. The insertion hole 132A penetrates the extension portion 132 in the direction (−Z direction) in which the terminal 210 arrives.

[0039] The connection portion 132B is a portion connected to the root of the extension portion 132 of the base portion 131. The connection portion 132B is a portion parallel to the XY plane in the extension portion 132 together with the front end portion 132D. Two inclined portions 132C are connected to the connection portion 132B.

[0040] The inclined portion 132C is a portion provided on both sides of the side (Y direction) relative to the extension direction (X direction) of the extension 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 lines on the +Y direction side and the -Y direction side, extending in the X direction. The two inclined portions 132C are provided on both sides of the insertion hole 132A between the connection portion 132B and the front end portion 132D.

[0041] The inclined portion 132C is as follows Figure 4 As shown, when viewed from the extension direction (X) of the extension portion 132, it is inclined in a V shape (in an inverted V shape in the vertical direction with the +Z direction as the top). The inclined portion 132C is made by bending both ends of the Y direction of the flat extension portion 132 in a V shape by stamping. The flat extension portion 132 is formed with the insertion hole 132A, the connection portion 132B, the front end portion 132D, the protrusion 132E and the step portion 132F by stamping.

[0042] The V-shaped inclined portion 132C is provided to increase the strength of the portion for inserting the terminal 210. More specifically, the terminal 210 comes from the -Z direction, and is therefore used to increase the bending rigidity of the connecting terminal 130 toward the Z direction, so that the terminal 210 can be reliably inserted into the insertion hole 132A.

[0043] The tip portion 132D is a portion of the extending portion 132 located most toward the +X direction side, and is a portion of the extending portion 132 that is parallel to the XY plane together with the base portion 131 .

[0044] The protrusion 132E is provided at the center of the inclined portion 132C in the X direction and is a portion that protrudes toward the inside of the insertion hole 132A in a plan view. The protrusion 132E is a portion that protrudes so that the inclined portion 132C bends toward the inside of the insertion hole 132A.

[0045] The protrusion 132E is provided on the inclined portion 132C, so that it protrudes obliquely upward toward the insertion hole 132A when viewed from the X direction. The protrusion 132E is similar to the inclined portion 132C. Figure 4 As shown, when viewed from the extending direction (X) of the extending portion 132 , it is inclined in a V-shape (an inverted V-shape in the vertical direction with the +Z direction upward).

[0046] The step portion 132F is provided in the most protruding section of the protruding portion 132E and is Figure 4A stepped portion is formed by being recessed in the -B direction in the thickness direction of the protruding portion 132E shown by the arrow B. The B direction is the same as the Z direction in the state before the inclined portion 132C is formed by stamping. In the B direction, the direction from the starting point of the arrow toward the front end is the - direction, and the opposite direction is the -B direction.

[0047] Since the stepped portion 132F hangs down in the -B direction more than the inverted V-shaped protruding portion 132E, the corner portion 132F1 on the lower surface side protrudes more toward the inside of the insertion hole 132A than in the case where the stepped portion 132F is not provided.

[0048] In Figure 4 In the enlarged view on the right side, the position of the lower surface of the protruding portion 132E in the case where the stepped portion 132F is not provided is indicated by a dotted line. In the case where the stepped portion 132F is not provided, the width in the Y direction between the two facing protruding portions 132E is W1, and the width in the Y direction between the two facing stepped portions 132F is W2 (<W1). Here, the width W1 is narrower than the width of the terminal 210 in the Y direction.

[0049] Therefore, by providing the stepped portion 132F, the width of the insertion hole 132A in the Y direction can be made narrower, and the connection between the connection terminal 130 and the terminal 210 can be made to contact in a more reliable state. Because the terminal 210 is inserted into the portion where the width in the Y direction is made narrower by the stepped portion 132F.

[0050] Figure 5 is a view showing a cross section taken along the C-C line of Figure 1 . The bracket 200 is omitted in Figure 5 . The cover 140 has: protruding portions 145A, 145B, which are provided at the upper and lower portions of the front end portion 132D of the connection terminal 130 inside the storage portion 140A for storing the connection terminal 130; a partition wall 146, which is provided between the two connection terminals 130 on the bottom surface of the storage portion 140A; and a guide flange 147, which is located on the lower surface side. A seal 149 is fitted on the outer peripheral surface of the guide flange 147, and the seal 149 is fitted with the seal 205. In addition, the protruding portions 145A, 145B are an example of abutting portions. And the seal 149 is an example of a sealing portion.

[0051] The interval between the lower surface of the protruding portion 145A and the upper surface of the protruding portion 145B is set to be larger than the thickness of the connection terminal 130 (the thickness of the front end portion 132D). In the state where the terminal 210 is inserted into the connection terminal 130 as shown in Figure 5 , almost no stress in the Z direction is generated in the connection terminal 130, so a gap is generated between the lower surface of the protruding portion 145A and the upper surface of the protruding portion 145B above and below the front end portion 132D.

[0052] When the terminal 210 is inserted into the connection terminal 130, the terminal 210 presses and expands the protrusions 132E and the step portions 132F on both sides of the insertion hole 132A in the Y direction, so that stress in the +Z direction is applied to the connection terminal 130. At this time, the upper surface of the front end portion 132D abuts against the lower surface of the protrusion 145A, so that the displacement of the connection terminal 130 can be suppressed until it reaches the lower surface of the protrusion 145A.

[0053] Furthermore, when the terminal 210 is pulled out from the connection terminal 130, the terminal 210 is pulled out in the -Z direction while abutting against the protrusions 132E and the step portions 132F on both sides of the insertion hole 132A, thereby applying stress in the -Z direction to the connection terminal 130. At this time, the lower surface of the front end portion 132D abuts against the upper surface of the protrusion 145B, so that the displacement of the connection terminal 130 can be suppressed until it reaches the upper surface of the protrusion 145B.

[0054] Furthermore, a partition wall 146 is provided on the bottom surface of the storage portion 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 connecting terminals 130, for example, the switch 100 is inserted into the bracket 200 at an angle relative to the Z direction, thereby suppressing the contact between the two connecting terminals 130 when one connecting terminal 130 swings to the other connecting terminal 130 side.

[0055] Figure 6 14 is a diagram showing the lower surface side of the cover 140. The cover 140 has two holes 148 provided inside a guide flange 147 located on the lower surface side, and a seal 149 provided on the outer peripheral portion of the guide flange 147.

[0056] The guide flange 147 is a protrusion and guides the switch 100 to a predetermined position relative to the bracket 200 when the switch 100 is mounted on the bracket 200 of the other device, and is inserted into the opening 204 (see FIG. Figure 2 ). A seal 149 is embedded in the outer periphery of the guide flange 147. When the retaining portion 120 and the flange 142 are inserted into the engaging portion 203 from the upper side, the switch 100 is pressed downward, and the guide flange 147 is inserted into the opening 204, the switch body 111 is engaged with the claw of the engaging portion 202, and the switch 100 is fixed to the bracket 200.

[0057] The hole 148 is for connecting the lower surface of the cover 140 and the storage portion (see Figure 5), so that the terminal 210 of the other device is inserted through and guided to the storage portion 140A. The hole portion 148 is located directly below the insertion hole 132A of the connection terminal 130 when viewed from above. By providing such a hole portion 148, the terminal 210 can be more reliably guided toward the insertion hole 132A of the connection terminal 130 in the storage portion 140A.

[0058] The seal 149 is embedded in the seal 205 (see Figure 2 ) is provided on the inner circumference of the switch 100. The switch 100 is provided with a seal 149, and the bracket 200 of the other device is provided with a seal 205. Therefore, when the switch 100 is installed from the upper side of the bracket 200, the switch body 111 is inserted into the engaging portion 202 (refer to Figure 2 ), and the retaining portion 120 and the flange 142 are embedded in the engaging portion 203 (refer to Figure 2 ), the guide flange 147 is embedded in the opening 204, at which time the seal 149 and the seal 205 are engaged, and the switch 100 and the bracket 200 are sealed.

[0059] Figure 7 1 is a diagram showing the manufacturing process of the connection terminal 130. First, Figure 7 As shown in (A), the base 131 and the extension 132M1 are manufactured by punching the sheet metal. The extension 132M1 has an insertion hole 132A, a connection portion 132B, a peripheral portion 132C1, a front end portion 132D and a protruding portion 132E. Compared with the extension 132 manufactured in the end, the extension 132M1 has a peripheral portion 132C1 instead of the inclined portion 132C, and no stepped portion 132F is provided. The peripheral portion 132C1 is a portion in a state before the punching process for manufacturing the inclined portion 132C is performed.

[0060] Then, yes Figure 7 The protrusion 132E of the extension portion 132M1 shown in (A) is subjected to stamping, thereby Figure 7 (B) shows a step portion 132F. The step portion 132F is a portion where the portion of the protruding portion 132E that protrudes most toward the insertion hole 132A is offset in the -Z direction by a predetermined thickness. Figure 7 The extension portion 132M1 shown in (A) becomes the extension portion 132M2.

[0061] And, finally, stamping is performed to make Figure 7 The peripheral portion 132C1 of the extension portion 132M2 shown in (B) is bent in the -Z direction relative to the connection portion 132B and the front end portion 132D. Figure 7 The extension portion 132M2 shown in (B) becomes the extension portion 132, and the Figure 7 (C) shows the connection terminal 130.

[0062] As described above, the connection terminal 130 is provided with the insertion hole 132A in the extension part 132 at the front end side (+X direction side) of the base part 131 held by the holding part 120, and the inclined parts 132C are provided on both sides of the insertion hole 132A in the Y direction. The two ends of the two inclined parts 132C in the X direction included in one connection terminal 130 are connected to the connection part 132B and the front end part 132D to be closed, so the extension part 132 is an annular member, and both sides of the Y direction thereof become the inclined parts 132C bent in the -Z direction.

[0063] As described above, since the extending portion 132 having the V-shaped annular shape in YZ cross section is provided, the bending rigidity of the connecting terminal 130 in the X direction, the Y direction, and the Z direction is significantly improved compared to a case where the inclined portion 132C is not provided.

[0064] Therefore, it is possible to provide the switch 100 in which the connection terminal 130 has sufficient strength, and a method for manufacturing the connection terminal 130 having sufficient strength.

[0065] Furthermore, since the connection terminal 130 extends from the holding portion 120 in the X direction, unlike a conventional switch mounting structure that changes its orientation in the −Z direction, the overall dimension of the switch 100 in the Z direction can be reduced.

[0066] Furthermore, since the step portion 132F is provided on the protrusion 132E of the extension portion 132, the interval of the insertion hole 132A can be narrowed by the amount of the step of the step portion 132F, so that the contact pressure between the connection terminal 130 and the terminal 210 can be increased, and the electrical reliability can be further improved.

[0067] Furthermore, since the step portion 132F is provided at 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 FIG. 14 ) on the lower surface side of the step portion 132F is Figure 4 The side surface parallel to the XZ plane of the terminal 210 is in contact with the terminal 210. Therefore, the contact surface with the terminal 210 can be reduced, and even when there is an attachment on the surface of the terminal 210, the corner 132F1 can be removed from the side surface of the terminal 210, so that the electrical connection between the connection terminal 130 and the terminal 210 can be made more reliable.

[0068] Furthermore, the switch 100 can be installed by simply aligning and inserting it with respect to the bracket 200 from the upper side. At this time, the seal 149 and the seal 205 are engaged by simply inserting the guide flange 147 on the lower surface of the cover 140 into the opening 204, and the switch 100 and the bracket 200 can be sealed. Therefore, the switch 100 can be provided which is easy to install with respect to the bracket 200 and can be sealed only by installation.

[0069] Furthermore, the above description has been given of a mode in which the step portion 132F is provided in the extension portion 132 of the connection terminal 130 . However, if sufficient contact pressure between the connection terminal 130 and the terminal 210 can be ensured without the step portion 132F, the step portion 132F may not be provided.

[0070] Furthermore, although the above description is made on a mode in which the switch 100 includes two connection terminals 130 , the number of the connection terminal 130 may also be one.

[0071] Furthermore, although the embodiment in which the housing 140 includes the contact portions 145A, 145B and the partition wall 146 has been described above, the housing 140 may not include at least any one of the contact portions 145A, 145B and the partition wall 146 .

[0072] Furthermore, although the embodiment in which the housing 140 has the guide flange 147 has been described above, the housing 140 may not have the guide flange 147 .

[0073] The switching switch and the method for manufacturing the connection terminal according to the exemplary embodiments of the present invention have been described above, but the present invention is not limited to the specifically disclosed embodiments, and various modifications and changes can be made without departing from the scope of the claims.

[0074] In addition, the present international application is based on and claims the benefit of priority from Japanese Patent Application No. 2019-078005 filed on April 16, 2019, the entire contents of which are incorporated herein by reference.

[0075] Description of Reference Numerals

[0076] 100…switching switch; 110…switch portion; 120…holding portion; 130…connecting terminal; 131…base portion; 132…extension portion; 132A…insertion hole; 132C…inclined portion; 132E…protrusion; 132F…stepped portion; 140…cover; 145A, 145B…protrusion; 146…partition wall; 147…guide flange; 200…bracket; 210…terminal.

Claims

1. A switching switch, comprising a holding portion and a connecting terminal connected to a terminal on a counterpart side, characterized in that: The connecting 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 that penetrates along the arrival direction of the other side terminal and for the other side terminal to be inserted, an inclined portion that is arranged on the side of the extension direction of the extension portion around the insertion hole and is inclined toward the arrival direction when viewed from the extension direction, and a protrusion that is arranged on the inclined portion and protrudes to the inner side of the insertion hole.

2. The switch according to claim 1, characterized in that: The protrusion has a step portion formed by being pressed down toward the arrival direction in the thickness direction of the protrusion.

3. The switching switch according to claim 1 or 2, characterized in that: The extending portion contacts the counterpart terminal at a corner of the protruding portion.

4. The switch according to claim 1, characterized in that: The inclined portions are two inclined portions provided on both sides of the insertion hole at the sides relative to the extending direction of the extending portion. The two inclined portions are inclined in a V-shape when viewed from the extending direction.

5. The switch according to claim 1, characterized in that: The switch further includes a housing for housing the connection terminal. The housing has a contact portion provided in the arrival direction and abutting against the counterpart terminal when the counterpart terminal is inserted or removed.

6. The switch according to claim 1, characterized in that: The switch further includes a housing for housing the connection terminal. Two connecting terminals are arranged in the housing. The housing has a partition wall provided between the two connection terminals.

7. The switching switch according to claim 5 or 6, characterized in that: The housing also has: An opening portion, for the other terminal to be inserted toward the connecting terminal; The sealing portion is provided at the opening portion and seals the opening portion with a counterpart housing that accommodates at least a part of the counterpart terminal.

8. The switching switch according to claim 5 or 6, characterized in that: The housing further includes a guide flange that guides the counterpart terminal toward the insertion hole of the extension portion.

9. A method for manufacturing a connection terminal, the connection terminal comprising a base portion and an extension portion extending in a direction away from the base portion, characterized in that: The manufacturing method comprises the following steps: A process of punching the base and the annular extension portion from sheet metal, wherein the extension portion is an extension portion continuous with the base portion and has an insertion hole penetrating along an arrival direction of a terminal of the other side and for inserting the terminal of the other side, and a protrusion protruding toward the inside of the insertion hole; A step of forming an inclined portion by press working the punched extending portion, the inclined portion being provided on the side of the extending direction of the extending portion around the insertion hole and inclined toward the arrival direction when viewed from the extending direction.

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