JP2005116411A - Switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch device capable of performing exact pattern switching without error with a simple structure. <P>SOLUTION: This switch device is provided with an operating member 1 having a moved limiting part 4, an exterior member 20 having a movement regulating part 21 regulating a movement area of an operating member 1 by engaging with the moved limitation part 4 to limit the movement of the moved limitation part 4, an electric substrate 40 having a switching pattern 44 for a switch, an engaging hole 35 engaged with the moved limitation part 4 and performing relative positioning with respect to the operating member 1 and an armature 30 contacting and sliding on the switching pattern 44 of the electric substrate 40. The armature 30 moves integrally with the operating member 1 by the moved limitation part 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a switch device, and more particularly, to a switch device including a conductive pattern portion, an elastic conductive contact piece that is in sliding contact with the conductive pattern portion, and an operation member that slides the conductive contact piece.

  As is well known, in recent years, a switch for switching the operation state of a camera, such as a mode setting switch in a silver halide camera or a digital camera, which is a small precision device, has created a conductive pattern portion on a printed wiring board. The conductive pattern portion is divided into several electrically independent areas, and an elastic conductive contact piece attached to a rotating body such as an operation dial is slid on the area by rotating the rotating body. The switch is switched according to which region is conductive.

  The elastic conductive contact piece is generally attached to the rotating body by, for example, heat caulking or the like. However, the elastic conductive contact piece and the rotating body are relatively separated due to a dimensional error caused when the elastic conductive contact piece and the rotating body are manufactured. Misalignment may occur. Along with this, it also causes a relative displacement of the contact piece with respect to the case holding the rotating body and the conductive pattern portion.

  Therefore, in Patent Document 1, the elastic conductive contact piece is positioned relative to the case by using a predetermined positioning member, and the elastic conductive contact piece is made conductive pattern by using another predetermined positioning member. A technique has been proposed in which the position is relatively positioned with respect to the part and attached to the rotating body by, for example, heat caulking.

In this way, the elastic conductive contact piece is positioned relative to the case and the conductive pattern portion and attached to the rotating body, so that the elastic conductive contact piece slides with respect to the conductive pattern portion with certainty. In addition, the index formed on the case and the index formed on the rotating body can be reliably matched.
JP-A-9-63812

  However, the technique described in Patent Document 1 ensures that the elastic conductive contact piece slides with respect to the conductive pattern portion, and also ensures that the index formed on the case and the index formed on the rotating body. In order to make them coincide with each other, a predetermined positioning member is used.

  Therefore, when assembling the elastic conductive contact piece, the rotating body, and the case, the manufacturing error of the two predetermined positioning members may overlap to increase the assembly error. Therefore, the elastic conductive contact piece is removed from the desired conductive pattern portion. There is a possibility that they are shifted, and there is a situation that they are not suitable when switching fine patterns.

  An object of the present invention is made in view of the above circumstances, and it is an object of the present invention to provide a switch device that can perform accurate pattern switching with a simple structure and no error.

  In order to achieve the above object, the switch device according to the present invention is configured such that an operation member having a movement restricting portion for restricting a movement region is engaged with the movement restricting portion to restrict movement of the movement restricting portion. By doing so, the exterior member having the movement restricting portion that defines the movement region of the operation member, the electric board having the switching pattern for the switch, and the movement restricted portion are engaged to perform relative positioning with respect to the operation member. A contact piece that has a hole to be engaged, moves integrally with the operation member by the movement restriction portion, and slides in contact with the switching pattern of the electric board, Further, the contact piece has a convex portion for position restriction in movement of the operation member to a predetermined position with respect to the exterior member, and the movement restricted portion is formed by a protruding shaft. The bump The diameter of the shaft in the moving direction is substantially equal to the diameter of the engaged hole in the moving direction, and the movement restricting portion is formed by a long hole, and the both ends of the long hole It is characterized in that the movement of the movement limiter is restricted.

  According to the switch device of the present invention, it is possible to provide a switch device capable of performing an accurate pattern switching with a simple structure and almost no assembly error.

  Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, the switch device will be described by taking a rotary slide switch device as an example.

(First embodiment)
FIG. 1 is an exploded perspective view of a rotary slide switch device showing an embodiment of the present invention, and FIG. 2 is taken along the line II-II in FIG. 1 in the rotary slide switch device after assembly. FIG. 3 is an enlarged longitudinal sectional view, and FIG. 3 is a bottom view of the concave portion of the exterior member in FIG.

  As shown in FIG. 1, the rotary sliding switch device 100 is attached to a rotary operation dial 1 that is an operation member, an exterior member 20 on which the rotary operation dial 1 is disposed, and the operation dial 1. An elastic conductive contact piece (hereinafter referred to as a contact piece) 30 and an electric substrate 40 on which a conductive pattern on which the conductive contact piece 30 slides are formed constitute a main part.

  The rotary operation dial 1 as an operation member has a disk-like rotary dial 1a and a diameter smaller than that of the rotary dial 1a formed integrally with the rotary dial 1a on the lower surface of the rotary dial 1a. Consisting of a small-diameter ring 1b, a convex knob portion 2 is integrally formed in the diameter direction on the upper surface of the rotary dial 1a. A knob index 7 is formed on one end of the upper surface of the knob portion 2.

  In addition, at the center of the lower surface of the small-diameter ring 1b, a dial shaft 3 having a short cylindrical shape is integrally formed with the small-diameter ring 1b so as to extend downward. As shown in FIG. 2, the dial shaft 3 has a lower half formed as a stepped small-diameter shaft, and the lower end portion of the small-diameter shaft has a cross section perpendicular to the axis that fits into the oval-shaped hole 32 of the contact piece 30. The oval contact piece fitting portion 5 is formed. In addition, a screw hole 3a is formed at the center of the dial shaft 3 so that a set screw 37, which will be described later, is engaged from below. Further, a stopper pin 4 that is a movement restricting portion including a projecting shaft extending downward is integrally formed near the peripheral portion of the lower surface of the small-diameter ring 1b.

  As shown in FIG. 1, the exterior member 20 has a dial placement recess 24 formed on a surface 20 </ b> A thereof. The dial placement recess 24 has a diameter slightly larger than the diameter of the rotary dial 1a of the operation dial 1, and the first recess 24a in which the rotary dial 1a is rotatably arranged, and the first recess 24a. Are formed in a recess in the recess 24a, and the two-stage recesses having different diameters downward from the second recess 24b in which the small-diameter ring portion 1b is rotatably disposed via the seal member 10. Formed from.

  At the center of the bottom surface of the second recess 24b, there is formed a through hole 25 having a diameter substantially the same as the small diameter shaft of the dial shaft 3 of the operation dial 1 and into which the dial shaft 3 is fitted tightly so as to freely rotate. Yes. Further, near the peripheral edge of the bottom surface of the second recess 24b, the stopper pin 4 is formed as a long hole having a substantially the same diameter in the radial direction as the stopper pin 4 of the operation dial 1 and having a partial arc shape in the circumferential direction. A rotation restricting hole 21 that is a movement restricting portion that engages (inserts) is formed. When the stopper pin 4 is engaged, the rotation restricting hole 21 restricts the movement (rotation) of the stopper pin 4 by the both end portions 21a and 21b of the elongated hole. ) Define the area.

  On the surface 20A of the exterior member 20, an exterior index 27 that defines a predetermined (moving) position corresponding to a conductive switching pattern 44 (to be described later) of the electric board 40 is located near the outer peripheral edge of the dial placement recess 24. For example, three are formed.

  Further, as shown in FIG. 3, a click convex portion 36, which will be described later, of the contact piece 30 is fitted to the back surface 24 </ b> A of the second concave portion 24 b of the dial placement concave portion 24 with a feeling of clicking near the periphery. For example, three click stop grooves 26 are formed as grooves 26A, 26B, and 26C at positions that respectively face three conductive switching patterns 44 described later on the electric substrate 40.

  Also, on the back surface 20B of the exterior member 20, a pair of columnar positioning pins 23 extending downward for attaching the electric substrate 40 and the support base 50 are integrated with the exterior member 20 in the vicinity of the dial placement recess 24. Is formed. The positioning pin 23 has a stepped shape, and is formed so that the diameter of the lower half 23b is smaller than the diameter of the upper half 23a.

  Further, a pair of cylindrical fixing bosses 22 extending downward for fixing the electric substrate 40 and the support base 50 in the vicinity of the positioning pins 23 are integrally formed with the exterior member 20 on the back surface 20B of the exterior member 20. Is formed. The length extending downward of the fixed boss 22 is formed to be the same length as the length extending downward of the upper half portion 23a of the positioning pin 23. Is formed with a fixing screw hole.

  On the other hand, the contact piece 30 is formed of a plate-like elastic conductive member, and includes an engaged convex portion 31 formed at the center portion, a common pattern contact piece 33 extending below the side portion, and one end portion. The conductive switching pattern contact piece 34 extending downward and the click projection 36 formed on the other end constitute a main part.

  Specifically, a conductive switching pattern contact piece 34 that contacts the conductive switching pattern 44 formed on the electric substrate 40 is formed at one end of the contact piece 30 so as to be bent from the contact piece 30 and extend downward. In addition, the common pattern contact piece 33 that contacts the conductive common pattern 43 formed on the electric board 40 is bent from the contact piece 30 and extends downward on the side protrusion 30a of the contact piece 30. Is formed.

  Further, on the other end portion of the contact piece 30, there is a click convex portion 36 that fits in the click stop groove 26 formed on the back surface 24 </ b> A of the dial placement concave portion 24 of the exterior member 20 so as to produce a click feeling. It is formed so as to protrude. The click protrusion 36 and the click stop groove 26 are fitted using a known click stop mechanism. The click convex portion 36 defines a position in the movement of the operation dial 1 to the exterior index 27 that is a predetermined position on the exterior member 20.

  An engaged convex portion 31 having a circular shape protruding upward from a plane is formed at a substantially central portion of the surface of the contact piece 30, and a stop is provided at the approximate center of the engaged convex portion 31. An oblong hole 32 is formed by the screw 37 for positioning and fixing the contact piece 30 to the dial shaft 3 together with a positioning hole 35 described later.

  Further, in the vicinity of the engaged projection 31 of the contact piece 30, the diameter of the operation dial 1 is substantially the same as the diameter of the stopper pin 4 in the moving direction, and the radial direction of the operation dial 1 is formed as a long hole. A positioning hole 35 is formed. The positioning hole 35 is a hole through which the stopper pin 4 is engaged. The long hole is a radius of rotation of the contact piece 30 and the operation dial 1 when the contact piece 30 is assembled to the dial shaft 3 by the set screw 37. It serves to absorb mutual part dimension errors in the direction. The positioning hole 35 positions the contact piece 30 relative to the operation dial 1 together with the oval hole 32. Therefore, the contact piece 30 moves integrally with the operation dial 1 by the stopper pin 4.

  The electric substrate 40 has a fan-like conductive common pattern 43 formed on the surface 40A so that the conductive common pattern contact piece 33 of the contact piece 30 is in sliding contact. The conductive switching pattern contact piece 34 is provided around the common pattern 43. For example, three conductive switching patterns 44 for switches are formed.

  The electric board 40 is formed with a positioning hole 41 into which the lower half portion 23b of the pair of positioning pins 23 of the exterior member 20 is fitted and a positioning hole 45 made of a long hole. The diameter of the positioning hole 41 has substantially the same diameter as that of the lower half portion 23 b of the positioning pin 23, and the positioning hole 45 absorbs an interval dimensional error between the pair of positioning pins 23.

  In the vicinity of the pair of positioning holes 41, 45, there is a pair of loose fitting holes 42 through which screws 53 to be screwed into the fixing bosses 22 of the exterior member 20 for fixing the electric substrate 40 to the exterior member 20 are inserted. Is formed.

  Here, the electric board 40 can be accurately positioned and fixed to the exterior member 20, whether it is a flexible wiring board or a hard wiring board. A pair of loosely fitting holes 51 into which the lower half portions 23 b of the pair of positioning pins 23 of the exterior member 20 are fitted and screws 53 to be screwed into the fixed bosses 22 of the exterior member 20 are inserted into the support base 50. The loose fitting hole 52 is formed.

Next, an assembly process of the rotary sliding switch device 100 configured as described above will be described.
First, the dial shaft 3 of the operation dial 1 is rotatably fitted in the through hole 25 of the dial arrangement recess 24 of the exterior member 20. Then, the stopper pin 4 of the operation dial 1 is engaged with the rotation restricting hole 21 of the dial arrangement recess 24 so that the movement position is restricted (restricted) between the both end portions 21a-21b. As a result, the rotation dial 1a of the operation dial 1 is rotatably disposed in the first recess 24a of the dial placement recess 24, and the small-diameter ring portion 1b of the operation dial 1 is rotated in the second recess 24b. Arranged freely. That is, the bottom surface of the small-diameter ring portion 1b is placed on the bottom surface of the second recess 24b of the dial placement recess 24.

  Since the seal member 10 which is a dustproof / waterproof O-ring is closely fitted to the outer periphery of the small diameter ring portion 1b, as shown in FIG. 2, the inner periphery and the small diameter of the second recess 24b are provided. Since the gap between the outer periphery of the ring portion 1b is sealed by the seal member 10, for example, dust and water are prevented from entering the switch device from the gap between the first recess 24a and the rotary dial 1a. be able to.

  Then, the oval-shaped hole 32 of the engagement protrusion 31 of the contact piece 30 is fitted into the contact fitting portion 5 of the dial shaft 3 protruding downward from the through hole 25 of the dial arrangement recess 24 of the exterior member 20. Then, a set screw 37 is inserted into the oval hole 32, and the set screw 37 is screwed into the screw hole 3 a of the dial shaft 3. Then, the contact piece 30 is sandwiched between the lower end portion of the dial shaft 3 and the countersunk head of the set screw 37 and is integrally attached to the dial shaft 3.

  In addition, since the stopper pin 4 protruding from the rotation restricting hole 21 of the dial placement recess 24 of the exterior member 20 is engaged with the positioning hole 35 of the contact piece 30, the positioning hole 35 is, as described above, Since the diameter of the stopper pin 4 of the operation dial 1 and the width of the elongated hole have substantially the same dimensions and are in a fitting relationship, when the contact piece 30 is assembled to the dial shaft 3 with the set screw 37, the contact piece 30 The operation dial 1 is integrated in the rotating direction. Therefore, when the operation dial 1 is rotated by the operator, the contact piece 30 also rotates integrally with the rotation of the operation dial 1.

  Further, since the positioning hole 35 is formed as a long hole in the radial direction of the operation dial 1, the stopper pin 4 is engaged, and when the contact piece 30 is assembled to the dial shaft 3 by the set screw 37, the contact piece 30 and the dimensional error in the rotational radius direction when the parts of the operation dial 1 are manufactured.

  Further, the click stop groove 26 formed on the back surface 24A of the dial placement recess 24 of the exterior member 20 includes three click grooves 26A, 26B, 26C of the click stop groove 26, for example, a click groove 26A. The click projection 36 of the contact piece 30 is fitted with a click feeling.

In this way, the contact piece 30 is rotatably disposed on the back surface 24A of the dial placement recess 24 of the exterior member 20.
Next, the positioning hole 41 and the positioning hole 45 formed in the electric substrate 40 are fitted into the stepped portion of the upper half portion 23a and the lower half portion 23b of the pair of positioning pins 23 formed on the back surface 20B of the exterior member 20. Further, the pair of lower half portions 23 b are fitted into the pair of loose fitting holes 51 of the support base 50.

  The surface of the electric substrate 40 is in contact with the lower end surfaces of the pair of fixed bosses 22 formed on the back surface 20B of the exterior member 20. Then, the screw 53 is inserted into the loose fitting hole 52 of the support base 50, the screw 53 is inserted into the loose fitting hole 42 formed in the electric substrate 40, and then screwed into the fixed boss 22, thereby the electric substrate 40. The support base 50 is fixed to the exterior member 20.

  As described above, the length extending downward of the fixed boss 22 is the same as the length extending downward of the upper half 23a of the positioning pin 23. 22 and the length extending below the upper half 23a are the height of the electric substrate 40 and the outer member 20 when the electric substrate 40 is fixed to the outer member 20, and the conductive switching pattern contact piece of the contact piece 30. The contact pressure 34 contacts the conductive switching pattern 44 formed on the surface 40A of the electric substrate 40, and the conductive common pattern contact piece 33 of the contact piece 30 contacts the common pattern 43 formed on the surface 40A of the electric substrate 40. It defines the contact pressure.

Therefore, the electric substrate 40 is fixed to the fixing boss of the exterior member 20, so that the contact piece 30 is disposed in pressure contact with the pattern of the electric substrate 40.
Here, if the electric board 40 is a flexible board, when the screw 53 is inserted into the pair of loose fitting holes 42 of the electric board 40 and the electric board 40 is fixed to the exterior member 20, the loose fitting holes 42 are torn. There is a fear.

  Therefore, when the electric substrate 40 is a flexible substrate, the pair of loose fitting holes 51 of the support base 50 are fitted into the lower half portions 23 b of the pair of positioning pins 23 protruding from the positioning holes 41 of the electric substrate 40. Further, even if the electric substrate 40 is a flexible substrate, a screw 53 is inserted from the lower surface of the pair of loose fitting holes 52 of the support base 50 and screwed into the fixing boss 22 of the exterior member 20. It is securely fixed to the exterior member 20.

  As described above, in the rotary slide switch device showing the embodiment of the present invention, the operation dial 1 and the contact piece 30 are coupled to the stopper pin 4 of the operation dial 1 having substantially the same diameter in the moving direction. This was performed using the positioning hole 35 of the contact piece 30.

  Therefore, when the stopper pin 4 is engaged with the positioning hole 35 and the contact piece 30 is assembled to the dial shaft 3 with the set screw 37, the positioning hole 35 is formed when the contact piece 30 and the operation dial 1 are manufactured (assembled). Since the position in the rotation direction is defined, when the operation dial 1 is rotated by the operator, the contact piece 30 also rotates integrally with the rotation of the operation dial 1.

  Further, since the positioning hole 35 is formed as a long hole in the radial direction of the operation dial 1, when the stopper pin 4 is engaged and the contact piece 30 is assembled to the dial shaft 3 by the set screw 37, the contact piece 30. In addition, the dimensional error in the radial direction when the parts of the operation dial 1 are manufactured is absorbed.

  Further, the rotation position of the conductive switching pattern contact piece 34 of the stopper pin 4 and the contact piece 30 is regulated by the click convex portion 36 of the contact piece 30 and the click stop groove 26 of the exterior member 20 and the stopper pin 4. And both end portions 21a and 21b of the rotation restricting hole 21 of the dial arrangement recess 24 of the exterior member 20.

  As a result, it is possible to absorb an error in the positional deviation in the radial direction due to the coupling between the operation dial 1 and the contact piece 30, so that the positions of the knob index 7 of the knob portion 2 of the operation dial 1 and the exterior index 27 of the exterior member 20. Can be reliably matched, and the conductive switching pattern contact piece 34 of the contact piece 30 and the conductive switching pattern 44 of the electric substrate 40 can be reliably brought into contact with each other, so that accurate pattern switching can be performed with a simple structure. It can be carried out.

  In the present embodiment, the switch device has been described by taking a rotary slide switch device as an example. However, the present invention is not limited to this, and is applicable to other slide switch devices such as a slide slide switch device. Of course, the same effect as in the present embodiment can be obtained.

The disassembled perspective view of the rotation-type sliding switch apparatus which shows one embodiment of this invention. The expanded longitudinal cross-sectional view which follows the II-II line in FIG. 1 in the rotary slide switch apparatus after an assembly. The bottom view of the recessed part of the exterior member in FIG.

Explanation of symbols

1 ... operation dial (operation member)
4. Stopper pin (moving restriction part)
20 ... Exterior member 21 ... Rotation restriction hole (movement restriction part)
21a, 21b ... Both ends of the rotation restricting hole (both ends of the long hole)
30 ... contact piece 35 ... positioning hole (engaged hole)
36 ... Clicking convex part 40 ... Electric board 44 ... Switching pattern Agent Patent attorney Susumu Ito

Claims (4)

An operation member having a movement restriction part for restricting the movement region;
An exterior member having a movement restricting portion that defines a movement region of the operation member by engaging the movement restricting portion and restricting movement of the movement restricting portion;
An electrical board having a switching pattern for the switch;
The movement restricting portion engages and has an engaged hole for positioning relative to the operation member. The movement restricting portion moves integrally with the operation member, and the switching pattern of the electric board A piece that contacts and slides;
A switch device comprising:   2. The switch device according to claim 1, wherein the contact piece has a convex portion for position restriction in movement of the operation member to a predetermined position with respect to the exterior member.   2. The switch device according to claim 1, wherein the movement restricting portion is formed of a protruding shaft, and a diameter of the protruding shaft in a moving direction is substantially equal to a diameter of the engaged hole in the moving direction. .   4. The switch device according to claim 1, wherein the movement restricting portion is formed by a long hole, and movement of the movement restricted portion is restricted by both end portions of the long hole.

Images