JP5340969B2 - Switch and contact mounting method - Google Patents

Description

  The present invention relates to a switch such as a transmission switch for electrically detecting a shift position of an automatic transmission and a contact mounting method.

  Conventional transmission switches include those shown in FIGS. 5 and 6, for example. FIG. 5 is a perspective view of the movable contact member reversed. FIG. 6 relates to a transmission switch. FIG. 5A is a cross-sectional view of the main part before the movable contact portion is caulked to the moving block. ) Is a cross-sectional view of the main part after caulking.

  As shown in FIGS. 5 and 6, the movable contact member 101, which is a contact member, is attached and coupled to the plate surface 103 a of the moving block 103 by caulking.

  The movable contact member 101 includes a contact base plate 105, an elastic arm 107, and a contact 109.

  The contact base plate 105 is formed in a U-shaped frame shape when viewed from above, and includes a base plate portion 105b having a caulking hole 105a, an extension plate portion 105c as an extension portion along the elastic arm 107, and an extension. It consists of a tip plate portion 105d at the tip of the plate portion 105c. The elastic arm 107 is provided so as to be inclined in the U-shaped frame of the contact base plate 105. The contact 109 is formed at the tip of the elastic arm 107.

  The movable contact member 101 is attached by caulking the contact base plate 105 along the plate surface 103a of the moving block 103 and fitting the hole 105a to the caulking pin 103b protruding from the plate surface 103a. It has a structure.

  In such a movable contact member 101, as the moving block 103 rotates, the contact 109 slides with respect to the fixed contact side and elastically contacts the fixed contact.

  In such a transmission switch, it is important to function as a reliable transmission switch that the contact pressure for the contact 109 to elastically contact the fixed contact is a constant value.

  However, when the caulking pressing force is applied to the contact base plate 105 due to caulking of the caulking pin 103b from the arrow direction as shown in FIG. 6B, the contact base plate 105 is distorted. Due to the distortion of the contact base plate 105, the contact base plate 105 is lifted from the plate surface 103a on both sides of the hole 105a.

  Since the contact pressure of the contact 109 with respect to the fixed contact involves not only the elastic arm 107 but also the contact base plate 105, the contact pressure to be set by the elastic arm 107 is uniquely determined when the above-described lifting occurs. The problem was that it was not stable.

JP 2002-319329 A

  The problem to be solved is that a problem arises that the contact pressure to be set by the elastic arm is not uniquely determined and is not stable due to lifting by caulking or the like.

The present invention provides a base having a fastening hole and an elastic arm projecting so as to be inclined from the base and having a contact formed at the tip in order to stabilize the contact pressure caused by the contact member by fastening such as caulking. A contact member provided with an extension portion extending from the base portion in the protruding direction of the elastic arm, the base portion being disposed along the surface on the mounting counterpart side, and the hole being a fastening portion on the surface side a switch for fastening the base to the surface is fitted in, provided between the base portion and the extension portion of the contact member, or provided in the extended portion, in a direction away from said surface The bent portion bent so as to be convex is elastically crushed while being bent with respect to the surface by the fastening , and the base side and the edge side of the extension portion are brought into contact with the surface. And

  In the switch of the present invention, by the above means, the base portion and the edge portion side of the extension portion are brought into contact with the surface while bending the bending portion with respect to the surface on the mounting counterpart side by fastening, thereby suppressing lifting. it can.

  By suppressing the lifting, the contact pressure can be uniquely determined by the elastic arm, and the contact pressure is stabilized.

It is a disassembled perspective view of the switch for transmissions. Example 1 It is a top view of the switch for transmissions. Example 1 It is the perspective view which reversed and saw the movable contact member. Example 1 In connection with the transmission switch, (a) is a cross-sectional view of the main part before the movable contact portion is caulked to the moving block, and (b) is a cross-sectional view of the main part after caulking. Example 1 It is the perspective view which reversed and saw the movable contact member. (Conventional example) In connection with the transmission switch, (a) is a cross-sectional view of the main part before the movable contact portion is caulked to the moving block, and (b) is a cross-sectional view of the main part after caulking. (Conventional example)

  The purpose of stabilizing the contact pressure by the contact member such as caulking is realized by the bent portion.

[switch]
1 and 2 relate to a first embodiment of the present invention, FIG. 1 is an exploded perspective view of a transmission switch, and FIG. 2 is a plan view thereof.

  The transmission switch 1 includes a resin terminal block 3 and a moving block 5. The terminal block 3 is provided with a fixed contact member 7. The moving block 5 is provided with a movable contact member 9. The fixed contact member 7 and the movable contact member 9 constitute a transmission shift contact circuit.

  The moving block 5 includes a metal cylindrical member 11, and the cylindrical member 11 is inserted into a hole portion 13 a of a metal detent plate 13 and is coupled by caulking.

  The movable contact member 9 is caulked and coupled to a plate surface 13b (surface on the other side of attachment, the lower surface in FIG. 1) of the detent plate 13 as will be described later. In the movable contact member 9, a rectangular portion 9 a is formed at the front and rear positions in the rotational direction of the movable contact member 9 in addition to the contacts described later.

  A manual shaft (not shown) that interlocks with the operation of the shift lever is disposed through the shaft hole portion 11a of the cylindrical member 11, and is fixed by a spring pin 15 that is fitted into the pin hole 11b of the cylindrical member 11. Is done.

  The terminal block 3 includes a pole board 17, and the fixed contact member 7 is disposed on the pole board 17.

  The fixed contact member 7 includes a plurality of fixed contacts 7a, and the fixed contacts 7a are alternately provided with different heights. After the fixed contact member 7 is resin-molded into the primary molded body 7b, the electrode board 17 of the secondary molded body is formed. Resin molding is applied to the arrangement location 17a of the fixed contact 7a of the pole board 17 with a step so that a difference is provided alternately between adjacent heights.

  The cylindrical member 11 is rotatably supported in the hole 17b of the pole board 17, and a washer 19 and a C clip 21 are inserted in this order into the end of the cylindrical member 11, and the C clip 21 engages with the groove 11c. Thus, the cylindrical member 11 is positioned in the axial direction.

  By positioning the cylindrical member 11 with respect to the pole board 17, it is possible to obtain stable electrical contact between the fixed contact member 7 and the movable contact member 9. The distal end of the rectangular portion 9 a of the movable contact member 9 is close to each fixed contact 7 a of the fixed contact member 7.

A U-shaped portion 23 a of the metal member 23 is press-fitted into the side hole 17 c of the electrode plate 17 on the outer periphery of the electrode plate 17. The metal member 23 is provided with a resin molding portion 23b, and the resin molding portion 23b comes into contact with the surface 13c of the detent plate 13 and presses the detent plate 13.
[Contact members]
FIG. 3 is a perspective view of the movable contact member reversed, FIG. 4 relates to a transmission switch, (a) is a cross-sectional view of the main part before the movable contact portion is caulked to the moving block, (b) ) Is a cross-sectional view of the main part after caulking.

  In FIG. 4, in order to simplify the explanation, the rectangular shape portion 9a shown in FIG. 1 is omitted, and the fastening by caulking is explained, and the ratio of the dimensions of each portion is ignored.

  As shown in FIGS. 1, 3, and 4, the movable contact member 9 that is a contact member includes a contact base plate 25, a plurality of elastic arms 27, and a movable contact 29 that is a plurality of contacts.

  The contact base plate 25 forms a frame of the movable contact member 9 and is formed in a U-shaped frame shape when viewed from above, and includes a substrate portion 25a as a base portion, an extension plate portion 25b as an extension portion, and an extension plate. It consists of a tip plate portion 25c at the tip of the portion 25b. The extension plate portion 25 b extends from the substrate portion 25 a in the protruding direction of the elastic arm 27 and extends along the elastic arm 27 when viewed from the plane of the movable contact member 9.

  The width of the extension plate portion 25b in the protruding direction of the elastic arm 27 is set longer than the width of the substrate portion 25a. A bent portion 25d in a direction away from the plate surface 13b is formed on the extension plate portion 25b on the substrate portion 25a side. In this embodiment, the bent portion 25d is adjacent to the substrate portion 25a. The formation position of the bending portion 25d with respect to the extension plate portion 25b is not particularly limited, and the bending portion can be formed at any position in the intermediate portion of the extension plate portion 25b. Moreover, it can also be set as the bending part which set the bending line between the board | substrate part 25a and the extension board part 25b, ie, the boundary of both.

  The edge of the substrate 25a, that is, the edge outside the hole 31, is set shorter than the edge 25e of the extension plate 25b with respect to the bent portion 25d.

  The rectangular portion 9a is cut and raised with respect to the substrate portion 25a and the tip plate portion 25c, and has different protruding lengths depending on the difference in the adjacent heights of the fixed contacts 7a.

  Caulking holes 31 are provided in the base portion 25a of the contact base plate 25 at regular intervals on the base side of each elastic arm 27. In addition, the formation location of the hole 31 with respect to the board | substrate part 25a is not limited.

  The elastic arm 27 is integrally cut and raised from the contact base plate 25, and is formed so as to be inclined in the U-shaped frame of the contact base plate 25.

  The movable contact 29 that is a contact is integrally bent at the tip of each elastic arm 27. The movable contact 29 comes into contact with the fixed contact 7a at the curved outer surface. The contact pressure of this contact is set by the elastic arm 27.

The movable contact member 9 is arranged along the plate surface 13b of the detent plate 13 whose contact base plate 25 is a surface on the other side of the attachment, and the hole 31 is connected to the caulking pin 13d protruding from the plate surface 13b. Mated and fixed by caulking.
[Contact mounting method]
The contact base plate 25 is arranged along the plate surface 13b, and the hole 31 is fitted to a caulking pin 13d protruding from the plate surface 13b and caulked, and the contact base plate is sandwiched between the bent portions 25d. 25, the edge portion 25e side and the substrate portion 25a side are brought into contact with the plate surface 13b.

  As shown in FIG. 4A, before the movable contact member 9 is fixed (caulked) to the plate surface 13b of the detent plate 13, the angle of the bent portion 25d is small. As shown in FIG. 4B, the bent portion 25d of the extension plate portion 25b is elastically crushed by caulking and fixing with the caulking pin 13d, and the movable contact member 9 is brought into close contact with the plate surface 13b in the vicinity of the hole 31. Therefore, the edge portion 25e side of the tip plate portion 25c of the contact base plate 25 and the substrate portion 25a side including the hole 31 are in contact with the plate surface 13b with the bent portion 25d interposed therebetween.

  Accordingly, the base portion 25a and the extension plate portion 25b of the contact base plate 25 of the movable contact member 9 are caused to move to the detent plate 13 by the force that the bending portion 25a tries to restore (force generated in the direction opposite to the plate surface 13b). Fixed to the plate surface 13b. With this fixed support, the contact pressure of the movable contact 29 with respect to the fixed contact 7a can be set almost uniquely by the elastic arm 27 supported by the fixed substrate portion 25a.

Particularly in this embodiment, since the position of the bent portion 25d is adjacent to the substrate portion 25a (the position of the bent portion 25d is separated from the edge portion 25e), the reaction force due to the deformation of the bent portion 25d is applied to the substrate portion 25a. It works greatly and can raise the contact force with respect to the plate surface 13b of the board | substrate part 25a.
[Effect of Example]
In the switch according to the embodiment of the present invention, a substrate portion 25a having a fastening hole 31, a resilient arm 27 projecting so as to be inclined from the substrate portion 25a and having a contact point 29 formed at the tip thereof, and the substrate portion 25a. The movable contact member 9 is provided with an extension plate portion 25b extending in the protruding direction of the elastic arm 27, and the substrate portion 25a is disposed along the plate surface 13b of the detent plate 13 and the hole 31 is provided. Is fitted to a caulking pin 13d on the plate surface 13b side to fasten the substrate portion 25a to the plate surface 13b, and between the substrate portion 25a and the extension plate portion 25b, Alternatively, the extension plate portion 25b is provided with a bent portion 25d in a direction away from the plate surface 13b, and the bent portion 25d is connected to the plate by the fastening. While deflected to the plane 13b and the substrate portion 25a side and the edge portion 25e side of the extension plate portion 25b is brought into contact with the plate surface 13b.

  Therefore, the edge portion 25e side and the hole 31 side of the tip plate portion 25c of the contact base plate 25 are brought into contact with the plate surface 13b with a bent portion 25d formed on the substrate portion 25a side of the elastic arm 27 interposed therebetween. The floating of the contact base plate 25 can be suppressed.

  By suppressing the lifting, the contact pressure can be determined by the elastic arm 27, and the contact pressure is stabilized.

  In particular, when the bent portion 25d is adjacent to the substrate portion 25a (when the bent portion 25d is separated from the edge portion 25e), the reaction force due to the deformation of the bent portion 25d is applied to the substrate portion 25a and the edge of the extension plate portion 25b. It works larger than the portion 25e and can increase the contact force of the substrate portion 25a with the plate surface 13b. In addition, it is easy to adjust the contact force of the substrate portion 25a with the plate surface 13b.

  Therefore, the contact pressure of the movable contact 29 against the fixed contact 7 a can be set almost uniquely by the elastic arm 27 by the reliable contact of the substrate portion 25 a.

  Further, since the rectangular portion 9a of the movable contact member 9 eliminates metal powder and metal pieces in the oil from the fixed contact 7a by the rotation, electrical stability is ensured, and the movable contact member 9 has a rectangular portion. Since 9a is integrated, the resin molding step is omitted as compared with the case of resin molding, which leads to cost reduction.

  In the structure of the above-described embodiment, the terminal block 3 is resin-molded and the pole board 17 is molded by making the difference between the fixed contacts 7a alternately in the height direction, so that electrical insulation between the fixed contacts 7a can be ensured. .

  In the contact mounting method according to the embodiment of the present invention, a board portion provided with a caulking hole 31, an elastic arm 27 projecting so as to be inclined from the board portion 25a and having a contact formed at the tip, and the board portion 25a. A movable contact member 9 provided with an extension plate portion 25b extending in the protruding direction of the elastic arm 27 from the base plate portion 25a and between the extension plate portion 25b or on the extension plate portion 25b. A bent portion 25d is provided in a direction away from the plate surface 13b, the substrate portion 25a is arranged along the plate surface 13b of the detent plate 13, and the hole 31 is fitted to the caulking pin 13d on the plate surface 13b side. The substrate portion 25a is fastened to the plate surface 13b, and the bent portion 25d is bent with respect to the plate surface 13b by this fastening. A rim portion 25e side of the extension plate portion 25b is brought into contact with the plate surface 13b and.

  For this reason, the contact base plate 25 can be prevented from floating by simple caulking.

  By suppressing the lifting, the contact pressure can be uniquely determined by the elastic arm 27, and the contact pressure can be stabilized.

  Although the movable contact member 9 has been fixed to the plate surface 13b of the detent plate 13 by caulking, it may be fixed by screws or rivets.

1 Transmission switch 9 Movable contact member (contact member)
13 Detent plate (Mounting side)
13b Plate surface (surface)
13d Caulking pin 25 Contact base plate 25a Substrate (base)
25b Extension plate (extension)
25d bending part 25e edge 27 elastic arm 29 movable contact 31 hole

Claims (4)

A base with a fastening hole;
An elastic arm projecting so as to incline from the base and having a contact formed at the tip;
An extension extending from the base in the protruding direction of the elastic arm;
A contact member provided with the base, and the base is disposed along the surface on the other side of the attachment, and the hole is fitted to the fastening portion on the surface side to fasten the base to the surface,
Provided between the base portion and the extension portion of the contact member, or the provided extensions, the bent bending portion to be convex in a direction away from the surface, relative to the surface by the fastening The switch is elastically crushed while being bent , and the base side and the edge side of the extension part are brought into contact with the surface. The switch according to claim 1,
The surface is a plate surface of a detent plate of a transmission switch,
The contact member is a movable contact member that can slide with respect to the fixed contact side with the rotation of the detent plate and can contact the fixed contact with contact pressure by an elastic arm.
A switch characterized by that. The switch according to claim 1 or 2,
The fastening portion on the surface side is a caulking pin protruding from the surface,
The fastening is performed by caulking the caulking pin by fitting the hole of the base to the caulking pin.
A switch characterized by that. A base with a fastening hole;
An elastic arm projecting so as to incline from the base and having a contact formed at the tip;
An extension extending from the base in the protruding direction of the elastic arm;
The said base contact member provided with a contact mounting method for fastening the base to said the hole is fitted into the engagement portion of the side surface causes disposed along a surface of the mounting mating,
Provided between the base portion and the extension portion of the contact member, or the provided extensions, the bent bending portion to be convex in a direction away from the surface, relative to the surface by the fastening The base side and the edge side of the extension are brought into contact with the surface while being elastically crushed while being bent.
A contact mounting method characterized by the above.

Images