JP2008130497A - Switching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switching device wherein push rod parts of movable contact pieces can be formed without requiring a separate member and work to assemble the separate member to reduce its cost. <P>SOLUTION: In this switching device formed so that a cam plate is moved by an operating member operated by a user, movable contact pieces 58-60, 61-63 are deformed by pushing the push rod parts 76-78, 79-81 of the movable contact pieces 58-60, 61-63 by the cam plate which has been moved, and the movable contact pieces 58-60, 61-63 are restored by releasing the pushing, and switching action to have the contacts 70-72, 73-75 of the movable contact pieces 58-60, 61-63 contacted and separated from a stationary contact is thereby carried out, the push rod parts 76-78, 79-81 of the movable contact pieces 58-60, 61-63 are formed by applying a mechanical process to make some of the movable contact pieces 58-60, 61-63 protrude. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a switch device having an improved push rod portion of a movable contact piece.

2. Description of the Related Art Conventionally, in a switch device for a vehicle such as an automobile, a cam plate is moved by an operation member such as a lever or a knob operated by a user, and a push rod portion which a movable contact piece has by the moved cam plate is provided. The movable contact piece is deformed by pressing, or the movable contact piece is restored by releasing the pressure, and thereby the contact (movable contact) of the movable contact piece is brought into contact with or separated from the opposed fixed contact. There is provided one that allows a switch operation to be performed (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 7-5879

  7 and 8 show the structures of the conventional movable contact pieces 1 to 3 in the switch device. Each of the conventional movable contact pieces 1 to 3 has attachment holes 4 to 6 at one end portion, and contacts (movable contact points) 7 to 9 at the other end portion. The part has push rod parts 10-12. The push rod portions 10 to 12 are configured by inserting and caulking rods 16 to 18 of different members into holes 13 to 15 formed in the intermediate portions of the movable contact pieces 1 to 3, respectively.

  For this reason, the rods 16 to 18 as separate members are required for each of the movable contact pieces 1 to 3, and each of the rods 16 to 18 is inserted into the holes 13 to 18 of the movable contact pieces 1 to 3 one by one. The work of caulking was necessary, and the cost was high.

  The present invention has been made in view of the above-described circumstances, and therefore the object thereof is to configure the push rod portion of the movable contact piece without requiring a separate member and without assembling the separate member. An object of the present invention is to provide a switch device that can reduce the cost.

  In order to achieve the above object, a switch device of the present invention includes an operation member operated by a user, a cam plate moved by the operation member, and a push rod portion that is pressed or released by the cam plate. A movable contact piece that is deformed when the push rod portion is pressed and restored when the press is released, and a fixed contact that faces and contacts the contact of the movable contact piece. The push rod portion of the movable contact piece is formed by machining to project a part of the movable contact piece.

  According to the above means, the push rod portion of the movable contact piece is formed by machining to project a part of the movable contact piece. It can be configured without the necessity of assembling the separate member, and the cost can be reduced.

Hereinafter, the present invention is applied to a switch device for a vehicle such as an automobile, and one example (one embodiment) thereof will be described with reference to FIGS.
First, FIGS. 3 and 4 show a switch device for a vehicle such as an automobile, omitting an intermediate portion of the lever 21 as an operation member, and the base portion 22 is mainly composed of a body 23 (see FIG. 4). The upper cover 24 is attached to the front (upper in FIG. 4) and the under cover 25 is attached to the rear (lower in FIG. 4).

  Between the body 23 and the upper cover 24, a bracket 26, which is a lever support member, is provided. The bracket 26 is open on the front surface, the left side surface opposite to the lever 21 side, and the surface portions (right side surface portion and rear surface portion) other than the upper and lower side surfaces (in the direction orthogonal to the paper surface of FIG. 4). The bracket 26 is shown in the figure centering on the shaft portion 27 by projecting a shaft portion 27 on the right side portion of the front surface portion and fitting the shaft portion 27 into a recess 28 formed in the upper cover 24. 4 is supported so as to be rotatable in a direction orthogonal to the paper surface of FIG. 4 (a direction indicated by an arrow A in FIG. 3).

  On the other hand, a ratchet 29 is attached to the left side portion of the front portion of the bracket 26 by being biased toward the cancel cam by a spring 30. Although not shown, the cancel cam is on the left side of the ratchet 29 in FIG. 4 and rotates integrally with the steering wheel (also not shown). On the rear side (lower part in FIG. 4) of the left side surface portion of the bracket 26, a movable contact piece 31 for turn signal is urged backward by a spring 32 and is opposed to the inside of the body 23. A fixed contact 33 for turn signal is mounted on the bottom surface.

  Further, holes 34 (only the upper one is shown in FIG. 4) are formed in the upper and lower side surfaces of the bracket 26, whereas the base portion of the lever 21 inserted into the bracket 26 has a shaft portion. 35, and the shaft portion 35 is fitted into the hole 34 of the bracket 26, so that the lever 21 is moved in the direction indicated by the arrow B in FIG. In a direction orthogonal to the direction).

  A deeper hole 36 is formed in the base part of the lever 21 on the left side of the shaft part 35, and a spring 37 and a moderation piece 38 are accommodated in the hole 36. On the other hand, a detent plate 39 is assembled to the body 23. The detent plate 39 has a plurality of moderation valleys 40 having slopes 40a in the front-rear direction, arranged in an arc arrangement centered on the shaft portion 27 of the bracket 26, and the moderation valley 40 includes the moderation valley 40 in one of the moderation valleys 40. The piece 38 is brought into pressure contact with the elastic force of the spring 37 and engaged, and the moderation piece 38, the spring 37 and the moderation valley 40 constitute a moderation mechanism 41 for the lever 21.

  Further, an arm member 42 is attached to the base of the lever 21 so as to be movable in the left-right direction in FIG. The lever 21 is hollow on the tip side (right side) from the base, and the shaft 43 is rotatably inserted therein. A driving portion 44 is provided at the base end portion of the shaft 43, and on the other hand, a knob 45, which is an operating member, is attached to the tip portion of the shaft 43 at the tip portion of the lever 21. 43 is provided so as to be rotatable in a direction indicated by an arrow C together with 43.

  Here, FIG. 6 shows the outer bottom surface portion of the body 23. As is clear from FIG. 6, the fixed contact 46 to 48 for passing signals and dimmer control are left on the outer bottom surface portion of the body 23. Further, fixed contacts 49 to 51 for light control are respectively mounted on the right side, and holes 52 to 54 and 55 to 57 are respectively formed in portions of the body 23 near the fixed contacts 46 to 48 and 49 to 51. Is forming.

  On the other hand, as shown in FIGS. 1 and 2, 58 to 60 are movable contacts for passing signals and dimmer control, 61 to 63 are movable contacts for light control, and these are conductive materials, In particular, it is formed in a tongue shape by a metal plate, especially a copper plate, and is formed integrally at one end (the movable contact pieces 58 to 60 are the right end portions and the movable contact pieces 61 to 63 are the left end portions). Have mounting holes 64 to 66 and 67 to 69.

  Further, the other end portions of the movable contact pieces 58 to 60 and 61 to 63 (the movable contact pieces 58 to 60 are the left end portion and the movable contact pieces 61 to 63 are the right end portion) are made of noble metal (for example, silver). Contacts (movable contacts) 70 to 72 and 73 to 75 are provided, and push rod portions 76 to 78 and 79 to 81 are provided at intermediate portions (near the other end portion) between the other end portion and the one end portion. have. The push rod portions 76 to 78 and 79 to 81 are machined to project the intermediate portion that is a part of each of the movable contact pieces 58 to 60 and 61 to 63. It is formed by pressing the bottom cylindrical shape.

  And the said movable contact pieces 58-60, 61-63 are attached to the outer bottom face part of the said body 23 with the screw (not shown) each penetrated to the attachment holes 64-66, 67-69, and the attachment In the state, the push rod portions 76 to 78 of the movable contact pieces 58 to 60 pass through the holes 52 to 54 of the body 23 into the body 23, and the push rod portions 79 to 81 of the movable contact pieces 61 to 63 are formed to the holes 55 to 55. 57 is similarly penetrated into the body 23. Further, the contacts 70 to 72 of the movable contact pieces 58 to 60 are opposed to the fixed contacts 46 to 48, and the contacts 73 to 75 of the movable contact pieces 61 to 63 are opposed to the fixed contacts 49 to 51.

  Thus, on the inner bottom surface of the body 23, the cam plate 83 for passing signal and dimmer control is positioned in the left-right direction in FIG. 4 and located above the push rod portions 76 to 78 of the movable contact pieces 58 to 60. The cam plate 84 for light control is arranged in a direction (vertical direction in FIG. 5) perpendicular to the paper surface of FIG. 4 and is located above the push rod portions 79 to 81 of the movable contact pieces 61 to 63. It is arranged to be movable.

  Although the cam plates 83 and 84 are not shown in detail, inclined cam portions 85 and 86 are respectively provided on the push rod portions 76 to 78 and 79 to 81 (separately from the push rod portions 76 to 78). To 60) and push rod portions 79 to 81 (movable contact pieces 61 to 63) in different shapes.

  Further, the cam plates 83 and 84 have bifurcated receiving portions 87 and 88 on the side opposite to the push rod portions 76 to 78 and 79 to 81, respectively. 4 are opposed to each other in the left-right direction in FIG. 4, and the tip of the arm member 42 attached to the base of the lever 21 is positioned therebetween.

On the other hand, the receiving portion 88 of the cam plate 84 is opposed to the direction orthogonal to the paper surface of FIG. 4 (vertical direction in FIG. 5), and the distal end portion of the driving portion 44 protruding from the base end portion of the shaft 43 is interposed therebetween. It is located.
3, 5, and 6, 89 is a terminal portion formed integrally with the body 23, and has a number of connection terminals 90 that are connected to the fixed contact piece 33 and the fixed contacts 46 to 51. Yes.

  When the user operates the lever 21 in the direction indicated by the arrow A in FIG. 3 based on the above configuration, a load in that direction is applied to the bracket 26, so that the bracket 26 is centered on the shaft portion 27. It rotates in the same direction.

  When the bracket 26 rotates as described above, in the moderation mechanism 41, the moderation piece 38 engages with the adjacent moderation valley 40 to give moderation to the rotation of the bracket 26 and the lever 21. At the same time, on the rear side of the left side surface portion of the bracket 26, a switch operation is performed in which the movable contact piece 31 contacts and separates from the fixed contact piece 33. The switch operation at this time serves to light the turn signal of the vehicle.

  In addition, the bracket 26 and the lever 21 which are rotated and given moderation remain in their positions, but when the steering wheel is rotated in a direction opposite to the rotating direction, the cancel cam rotates integrally with the steering wheel. Thus, the bracket 26 and the lever 21 are returned in response to the ratchet 29 being kicked and rotated.

  On the other hand, when the lever 21 is operated in the direction indicated by the arrow B in FIG. 4, the lever 21 rotates in the same direction around the shaft portion 35. At the same time, the lever 21 causes the base to move the cam plate 83 from the arm member 42 via the receiving portion 87 of the cam plate 83 in the left-right direction in FIG. Accordingly, the movable contact pieces 58 to 60 are deformed by pressing the push rod portions 76 to 78 by the cam portions 85 of the cam plate 83 separately from the push rod portions 76 to 78, respectively, or the pressure is released and restored. Is done.

  As a result, the contacts 70 to 72 of the movable contact pieces 58 to 60 perform a switching operation that makes contact with and separates from the opposed fixed contacts 46 to 48. The switch operation at this time is used for vehicle passing signals and dimmer control. Further, the rotation of the lever 21 at this time is given moderation by sliding and engagement of the moderation piece 38 in the inclination direction of the moderation valley 40 in the moderation mechanism 41.

  When the knob 45 is rotated in the direction indicated by the arrow C in FIGS. 3 and 4, the shaft 43 is rotated in the same direction by the driving portion 44 via the receiving portion 88 of the cam plate 84. The cam plate 84 is moved in the vertical direction in FIG. Accordingly, the movable contact pieces 61 to 63 are deformed by pressing the push rod portions 79 to 81 by the cam portions 86 of the cam plate 84 separately from the push rod portions 79 to 81, respectively, or the pressure is released and restored. Is done.

  As a result, the contacts 73 to 75 of the movable contact pieces 61 to 63 perform a switching operation to contact and separate from the opposed fixed contacts 49 to 51. The switch operation at this time serves to control the light of the vehicle. Further, the knob 45 is rotated at this time by a moderation mechanism (not shown) provided between the knob 45 and the lever 21.

  And according to the said structure, the push rod parts 76-81 of the movable contact pieces 58-63 are formed by machining which makes a part of the movable contact pieces 58-63 protrude, Therefore The push rod portions 76 to 81 of the pieces 58 to 63 can be configured without requiring a separate member as in the conventional rod, and without requiring a work for assembling the separate member, and the cost can be reduced.

  The present invention is not limited to the embodiments described above and shown in the drawings. In particular, the application target of the switch device is not limited to a vehicle, and can be widely applied to switch devices in general. Further, the operation member of the switch device is not limited to the rotation lever or the rotation knob, but may be a slide knob or the like. Furthermore, the movable contact piece is not limited to the one that separates the contact from the fixed contact when the push rod portion is deformed by being pressed by the cam plate, and may be the one that makes contact. In addition, the present invention can be implemented with appropriate modifications without departing from the scope of the invention.

The perspective view of the movable contact piece which shows one Example of this invention Vertical side view of movable contact Front view of switch device Sectional drawing which follows the XX line of FIG. Sectional drawing which follows the YY line of FIG. Outside view of switch device body 1 equivalent diagram showing a conventional example 2 equivalent diagram

Explanation of symbols

  In the drawings, 21 is a lever (operation member), 45 is a knob (operation member), 46 to 51 are fixed contacts, 58 to 63 are movable contact pieces, 70 to 75 are contact points of the movable contact pieces, and 76 to 81 are push rods. Reference numerals 83 and 84 denote cam plates.

Claims (1)

An operation member operated by a user;
A cam plate moved by the operation member;
A movable contact piece that has a push rod part that is pressed or released by the cam plate, is deformed when the push rod part is pressed, and is restored when the press is released;
In what comprises a fixed contact that faces and separates from the contact that this movable contact piece has,
A switch device, wherein the push rod portion of the movable contact piece is formed by machining to project a part of the movable contact piece.

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