JP7185025B2 - Changeover switch and connection terminal manufacturing method - Google Patents

Description

The present invention relates to a changeover switch and a method of manufacturing a connection terminal.

2. Description of the Related Art Conventionally, in a switch mounting structure in which a switch is fixed to a mounting position and the contacts of the switch are connected to a substrate on the mounting position side, connection terminals connected to the switch contacts protrude from the side surface of the casing. mounting structure.

A plate-like connection terminal protruding from the side surface of the casing is bent downward at a right angle, the tip portion of the terminal is bent sideways at a right angle at the lower end, and a mounting hole is provided at the tip portion of the side-bent tip portion. When the switch is arranged at the mounting position, the switch is fixed to the mounting position by fitting the terminals on the substrate of the mating device into the mounting holes of the connection terminals of the switch (see, for example, Patent Document 1).

JP-A-11-053975

By the way, in the conventional switch mounting structure, the tip portion of the connection terminal is bent sideways at a right angle, so the tip portion does not have sufficient strength. Therefore, when the terminal on the substrate of the mating device is inserted into the mounting hole of the tip portion, the tip portion may be bent upward and the terminal of the mating device may not be inserted.

Accordingly, it is an object of the present invention to provide a changeover switch having connection terminals with sufficient strength, and a method for manufacturing connection terminals having sufficient strength.

A change-over switch according to an embodiment of the present invention is a change-over switch including a holding portion and a connection terminal connected to a mating terminal, wherein the connection terminal includes a base portion held by the holding portion and the base portion. an insertion hole through which the mating terminal is inserted along the direction in which the mating terminal arrives; an inclined portion provided on the side of the extending direction of the portion, extending in the extending direction and inclined toward the incoming direction; and a projecting portion provided on the inclined portion and protruding inside the insertion hole. and an annular extension having a

It is possible to provide a changeover switch in which connection terminals have sufficient strength, and a method for manufacturing connection terminals having sufficient strength.

FIG. 4 is a diagram showing a state in which the changeover switch 100 is attached to a holder 200 of the counterpart device; FIG. 4 is a diagram showing a state in which the changeover switch 100 is attached to a holder 200 of the counterpart device; 4 is a diagram showing a state in which a cover 140 is removed from the changeover switch 100 of the embodiment; FIG. FIG. 4 is a diagram showing a cross section taken along line AA of FIG. 3; FIG. 2 is a view showing a cross section taken along line CC of FIG. 1; 4 is a view showing the bottom side of cover 140. FIG. 4A and 4B are diagrams showing a manufacturing process of the connection terminal 130. FIG.

Embodiments to which the changeover switch and the connection terminal manufacturing method of the present invention are applied will be described below.

<Embodiment>
1 and 2 are diagrams showing a state in which the switch 100 is attached to the holder 200 of the counterpart device. In the following description, an XYZ orthogonal coordinate system is used, and planar view means XY plane view. In the following, for convenience of explanation, the +Z side will be described as the top and the -Z side will be described as the bottom, but this does not represent a universal vertical relationship.

The changeover switch 100 includes a switch portion 110 , a holding portion 120 , two connection terminals 130 and a cover 140 . Below, FIG. 3 is used in addition to FIG. 1 and FIG. FIG. 3 is a diagram showing a state in which the cover 140 is removed from the switch 100 of the embodiment.

The switch section 110 has a switch body 111 and a push button 112 . The switch body 111 incorporates a switch section 111A. The push button 112 can be pressed in the X direction. The switch unit 111A has two built-in terminals connected to the two connection terminals 130, and when the push button 112 is pressed, the two internal terminals change from a non-conducting state (off state) to a conducting state (on state). ), and when the push button 112 is not pressed, the two internal terminals switch from the conducting state (on state) to the non-conducting state (off state).

The holding portion 120 is a plate-like 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 . Two connection terminals 130 protrude in the +X direction from the +X direction side surface of the holding portion 120 .

Two connection terminals 130 are provided and extend in the +X direction from the +X direction side surface of the holding portion 120 . The connection terminal 130 is connected to two terminals 210 of the counterpart device. A detailed configuration of the connection terminal 130 will be described later.

The cover 140 has a cover body 141 and a flange 142 . The cover main 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 main body 141 and protrudes in the ±Y and +Z directions.

The mating device is a device to which changeover switch 100 is attached, and includes holder 200 and two terminals 210 . In FIG. 1, the connection terminal 130 is covered with a cover 140 that covers the holder 200, and in FIG. 2, the cover 140 is removed.

The holder 200 has a holder body 201 , engaging portions 202 and 203 , an opening 204 and packing 205 . The holder main body 201 is a rectangular parallelepiped housing, and is provided with engaging portions 202 and 203 and an opening 204 on its upper surface.

The engaging portions 202 are a pair of engaging portions extending upward from the holder body 201, and fix the switch body 111 with claw-like portions projecting inward from the upper end. The engaging portion 203 is a rail-shaped engaging portion extending upward from the holder main body 201, and holds the holding portion 120 and the flange 142 of the cover 140 by inserting them from above while aligning them. The opening 204 is provided for protruding two terminals 210 , and the two terminals 210 are surrounded by a waterproof packing 205 inside the opening 204 .

Terminal 210 is an example of a mating terminal. Two terminals 210 are provided, and are connected to the control section or the like of the counterpart device. Since the two terminals 210 are connected to the two connection terminals 130 respectively, the control unit or the like of the counterpart device can detect the ON or OFF state of the changeover switch 100 .

In order to attach the changeover switch 100 to the holder 200 , the changeover switch 100 is aligned from the upper side of the holder 200 , the switch main body 111 is fitted in the engaging portion 202 , and the holding portion 120 and the flange 142 are attached to the engaging portion 203 . You can fit it in.

Next, the configuration of the connection terminal 130 will be described. Here, description will be made using FIG. 4 in addition to FIGS. 1 to 3. FIG. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3. FIG. The two connection terminals 130 have similar configurations.

The connection terminal 130 has a base portion 131 and an extension portion 132 . The connection terminal 130 is made of metal, and is produced by stamping a sheet metal and then pressing the sheet metal. The connection terminal 130 is integrated with the holding portion 120 manufactured by insert molding.

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

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

The extending portion 132 has a wider width in the Y direction than the base portion 131, and has an annular shape in a plan view due to an insertion hole 132A provided in the center. The insertion hole 132A penetrates the extending portion 132 in the incoming direction of the terminal 210 (-Z direction).

The connecting portion 132B is a root portion of the extending portion 132 connected to the base portion 131 . The connection portion 132B is a portion of the extension portion 132 parallel to the XY plane together with the tip portion 132D. Two inclined portions 132C are connected to the connecting portion 132B.

The inclined portions 132C are provided on both sides (Y direction) with respect to the extension direction (X direction) of the extension portion 132 in the periphery of the insertion hole 132A, and extend in the arrival direction (−Z direction) of the terminal 210. This is the sloping part. That is, there are two inclined portions 132C, one on the +Y direction side and one on the −Y direction side, which extend in the X direction. The two inclined portions 132C are provided on both sides of the insertion hole 132A between the connecting portion 132B and the tip portion 132D.

As shown in FIG. 4, the inclined portion 132C is inclined in a V shape (inverted V shape in the vertical direction with the +Z direction upward) when viewed from the extending direction (X) of the extending portion 132. ing. The inclined portion 132C is formed by pressing both ends in the Y direction of the extension portion 132 in a flat plate-like state in which the insertion hole 132A, the connection portion 132B, the tip portion 132D, the projecting portion 132E, and the stepped portion 132F are formed. It is made by folding into a V shape.

The purpose of providing the V-shaped inclined portion 132C is to improve the strength of the portion into which the terminal 210 is inserted. More specifically, since the terminal 210 comes from the -Z direction, the bending rigidity of the connection terminal 130 in the Z direction is improved so that the terminal 210 can be reliably inserted into the insertion hole 132A. .

The distal end portion 132D is a portion of the extension portion 132 that is located on 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 projecting portion 132E is a portion that is provided in the center of the inclined portion 132C in the X direction and projects inside the insertion hole 132A in a plan view. The projecting portion 132E is a portion projecting from the inclined portion 132C so as to curve toward the inside of the insertion hole 132A.

Since the protruding portion 132E is provided on the inclined portion 132C, it protrudes obliquely upward toward the insertion hole 132A when viewed in the X direction. Similar to the inclined portion 132C, the projecting portion 132E is V-shaped when viewed from the extending direction (X) of the extending portion 132 as shown in FIG. V-shaped).

The stepped portion 132F is provided in the most protruding section of the protruding portion 132E, and is a portion formed with a step by recessing in the -B direction in the thickness direction of the protruding portion 132E indicated by the arrow B in FIG. be. The B direction is the same as the Z direction before the inclined portion 132C is formed by pressing. As for the B direction, the direction from the starting point of the arrow to the tip is the - direction, and the opposite direction is the -B direction.

Since the stepped portion 132F is lower in the -B direction than the inverted V-shaped protruding portion 132E, the corner 132F1 on the lower surface side protrudes further inside the insertion hole 132A than when the stepped portion 132F is not provided.

In the enlarged view on the right side of FIG. 4, the broken line indicates the position of the lower surface of the projecting portion 132E when the stepped portion 132F is not provided. When the stepped portion 132F is not provided, the width in the Y direction between the two facing projecting portions 132E is W1, but 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.

Therefore, by providing the stepped portion 132F, the width of the insertion hole 132A in the Y direction can be narrowed, and the connection terminal 130 and the terminal 210 can be brought into contact with each other in a more reliable state. This is because the terminal 210 is inserted in a place where the width in the Y direction is narrowed by the step portion 132F.

FIG. 5 is a cross-sectional view taken along the line CC of FIG. 1. FIG. In FIG. 5, the holder 200 is omitted. The cover 140 includes protrusions 145A and 145B provided above and below the distal end portion 132D of the connection terminal 130, and between the two connection terminals 130 on the bottom surface of the storage portion 140A. It has a partition wall 146 provided and a guide flange 147 located on the underside. A packing 149 is fitted to the outer peripheral surface of the guide flange 147 , and the packing 149 is fitted with the packing 205 . Note that the projecting portions 145A and 145B are examples of contact portions. Also, the packing 149 is an example of a seal portion.

The distance between the lower surface of the projecting portion 145A and the upper surface of the projecting portion 145B is set larger than the thickness of the connection terminal 130 (the thickness of the tip portion 132D), and as shown in FIG. In the state where the terminal 210 is inserted into the terminal 210, almost no stress in the Z direction is generated in the connection terminal 130, so there is a gap between the lower surface of the projecting portion 145A and the upper surface of the projecting portion 145B above and below the tip portion 132D. There is a gap in

When the terminal 210 is inserted into the connection terminal 130, the terminal 210 spreads the projecting portion 132E and the stepped portion 132F facing both sides of the insertion hole 132A in the Y direction, so stress is applied to the connection terminal 130 in the +Z direction. At this time, the upper surface of tip portion 132D contacts the lower surface of projecting portion 145A, so that the displacement of connecting terminal 130 can be suppressed to the lower surface of projecting portion 145A.

Further, 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 protrusions 132E and the stepped portions 132F facing both sides of the insertion hole 132A. A stress in the Z direction is applied. At this time, since the lower surface of the tip portion 132D contacts the upper surface of the projecting portion 145B, the displacement of the connection terminal 130 can be suppressed to the upper surface of the projecting portion 145B.

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 Y-direction end of the inclined portion 132C. For this reason, when the two terminals 210 are inserted into the two connection terminals 130, for example, by obliquely inserting the changeover switch 100 into the holder 200 at an angle with respect to the Z direction, either one When one connection terminal 130 swings toward the other connection terminal 130, contact between the two connection terminals 130 can be suppressed.

FIG. 6 is a diagram showing the bottom side of the cover 140. As shown in FIG. The cover 140 has two holes 148 provided inside the guide flange 147 located on the lower surface side, and a packing 149 provided on the outer peripheral portion of the guide flange 147 .

The guide flange 147 guides the change-over switch 100 to a predetermined position with respect to the holder 200 when the change-over switch 100 is attached to the holder 200 of the mating device, and the inside of the opening 204 (see FIG. 2) on the upper surface of the holder 200. It is a protrusion that is inserted into the A packing 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 engaged with the claw of the engaging portion 202. The switch 100 is fixed to the holder 200 in this state.

The hole 148 communicates between the lower surface of the cover 140 and the storage section (see FIG. 5), and is provided for inserting the terminal 210 of the mating device and guiding it to the storage section 140A. The hole portion 148 is located directly below the insertion hole 132A of the connection terminal 130 in plan view. By providing such a hole portion 148, the terminal 210 can be more reliably guided into the insertion hole 132A of the connection terminal 130 in the storage portion 140A.

The packing 149 is fitted on the inner peripheral side of the packing 205 (see FIG. 2). Since the changeover switch 100 is provided with a packing 149 and the holder 200 of the mating device is provided with a packing 205, when the changeover switch 100 is attached from above the holder 200, the engaging portion 202 (see FIG. 2) ) and the holding portion 120 and the flange 142 are fitted into the engaging portion 203 (see FIG. 2), the guide flange 147 is fitted into the opening 204, and at this time, the packing 149 and the packing 205 are fitted, and the space between the switch 100 and the holder 200 is sealed.

7A and 7B are diagrams showing a manufacturing process of the connection terminal 130. FIG. First, as shown in FIG. 7A, a base portion 131 and an extension portion 132M1 are produced by punching a sheet metal. The extension portion 132M1 has an insertion hole 132A, a connection portion 132B, a peripheral portion 132C1, a tip portion 132D, and a projecting portion 132E. Compared to the finally manufactured extension portion 132, the extension portion 132M1 has a peripheral portion 132C1 instead of the inclined portion 132C and is not provided with the stepped portion 132F. The peripheral portion 132C1 is a portion in a state before press working for producing the inclined portion 132C.

Next, a stepped portion 132F is produced as shown in FIG. 7B by performing press working on the projecting portion 132E of the extension portion 132M1 shown in FIG. 7A. The stepped portion 132F is a portion obtained by shifting the portion of the protruding portion 132E that protrudes most toward the insertion hole 132A side by a predetermined thickness in the -Z direction. As a result, the extension portion 132M1 shown in FIG. 7A becomes an extension portion 132M2.

Finally, the peripheral portion 132C1 of the extending portion 132M2 shown in FIG. 7(B) is press-worked so as to be bent in the −Z direction with respect to the connecting portion 132B and the tip portion 132D, resulting in the result shown in FIG. 7(B). The extension portion 132M2 becomes the extension portion 132, and the connection terminal 130 shown in FIG. 7C is completed.

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

In this way, the YZ cross-sectional shape is V-shaped, and the annular extending portion 132 is provided. Rigidity improves dramatically.

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

In addition, since the connection terminal 130 extends from the holding portion 120 in the X direction, unlike the configuration in which the orientation of the switch 100 is changed in the -Z direction as in the conventional switch mounting structure, the entire changeover switch 100 extends in the Z direction. The size can be reduced.

Further, since the stepped portion 132F is provided on the projecting portion 132E of the extension portion 132, the interval between the insertion holes 132A can be narrowed by the step of the stepped portion 132F. It can be made larger and the electrical reliability can be further improved.

Further, since the stepped portion 132F is provided on the protruding portion 132E included in the inclined portion 132C, when the terminal 210 is inserted into the insertion hole 132A, the corner 132F1 (enlarged view of FIG. 4) of the lower surface side of the stepped portion 132F ) contacts the side surface of the terminal 210 parallel to the XZ plane. Therefore, the contact surface with the terminal 210 can be made small, and even if there is an adhering matter on the surface of the terminal 210, it can be removed from the side surface of the terminal 210 at the corner 132F1. Connections can be made more reliable.

In addition, the changeover switch 100 can be attached to the holder 200 simply by aligning the position and fitting the holder 200 from above. At this time, only by inserting the guide flange 147 on the lower surface of the cover 140 into the opening 204, the packing 149 and the packing 205 are fitted to seal the changeover switch 100 and the holder 200. FIG. Therefore, it is possible to provide the changeover switch 100 which can be easily attached to the holder 200 and can be sealed just by attaching it.

In the above description, the configuration in which the stepped portion 132F is provided in the extension portion 132 of the connection terminal 130 has been described. , the stepped portion 132F may not be provided.

In the above description, the changeover switch 100 includes two connection terminals 130, but the number of connection terminals 130 may be one.

In the above description, the case 140 has the contact portions 145A and 145B and the partition wall 146. However, the case 140 has at least one of the contact portions 145A and 145B and the partition wall 146. It doesn't have to be.

Also, in the above description, the case 140 has the guide flange 147 , but the case 140 does not have to have the guide flange 147 .

Although the changeover switch and the method of manufacturing the connection terminal according to the exemplary embodiments of the present invention have been described above, the present invention is not limited to the specifically disclosed embodiments, and the invention is not limited to the specific disclosed embodiments. Various modifications and changes are possible without departing from the scope of the.

This international application claims priority based on Japanese Patent Application 2019-078005 filed on April 16, 2019, the entire content of which is hereby incorporated by reference into this international application. shall be

100 switch 110 switch part 120 holding part 130 connection terminal 131 base part 132 extension part 132A insertion hole 132C inclined part 132E projecting part 132F step part 140 cover 145A, 145B projecting part 146 partition wall 147 guide flange 200 holder 210 terminal

Claims (9)

a holding part;
A changeover switch including a connection terminal connected to a mating terminal,
The connection terminals are
a base held by the holding part;
an extension portion extending in a direction away from the base portion, the insertion hole penetrating along an arrival direction of the mating terminal and into which the mating terminal is inserted; an inclined portion provided on a side of the extending portion in the extending direction, extending in the extending direction, and inclined toward the arrival direction; A changeover switch, comprising: an annular extension having a portion; 2. The changeover switch according to claim 1, wherein said projecting portion has a stepped portion formed by being pushed down in said incoming direction in a thickness direction of said projecting portion. 3. The change-over switch according to claim 1, wherein said extension contacts said mating terminal at a corner of said protrusion. The inclined portions are two inclined portions provided on both sides of the insertion hole on the sides with respect to the extending direction of the extending portion,
The changeover switch according to any one of claims 1 to 3, wherein the two inclined portions are inclined in a V shape when viewed from the extending direction. further comprising a case that houses the connection terminal;
5. The change-over switch according to claim 1, wherein said case has an abutting portion provided in said incoming direction and abutted when said mating terminal is inserted or pulled out. further comprising a case that houses the connection terminal;
Two of the connection terminals are arranged side by side in the case,
5. The changeover switch according to claim 1, wherein said case has a partition provided between said two connection terminals. Said case is
an opening into which the mating terminal is inserted toward the connection terminal;
7. The changeover switch according to claim 5, further comprising a seal portion provided in said opening portion and sealing between said opening portion and a mating case accommodating at least part of said mating terminal. The changeover switch according to any one of claims 5 to 7, wherein the case further has a guide flange that guides the mating terminal toward the insertion hole of the extension portion. a base;
A method for manufacturing a connection terminal having an extension portion extending in a direction away from the base portion,
From the sheet metal, the base portion, the extension portion continuous with the base portion, the insertion hole passing through along the arrival direction of the mating terminal and into which the mating terminal is inserted, and the inside of the insertion hole. punching an annular extension having a protrusion projecting into the
By subjecting the punched extension portion to press working, the extension portion is provided on the side of the periphery of the insertion hole with respect to the extension direction of the extension portion , extends in the extension direction, and faces the incoming direction. A method of manufacturing a connection terminal, comprising:

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