JP5007946B2 - Switch operating device - Google Patents

Description

  The present invention relates to a switch operating device that presses a switch provided in, for example, a vehicle instrument device.

  Generally, an instrument device for a vehicle is provided with a display for displaying information such as a travel distance, an outside temperature, and a time, and a switch. These displays can be switched by pressing a switch. As this type of instrument device, for example, the one described in Patent Document 1 below is known.

A vehicle meter (instrument device) described in Patent Literature 1 includes a pointer-type speedometer and tachometer, a liquid crystal display element D3 that displays information such as a vehicle travel distance, fuel consumption, outside temperature, and time, An operation shaft 12 (operation member) for switching display information of the liquid crystal display element D3 according to a user's operation is provided. The operation shaft 12 in which the coil spring 13 (elastic member) is held in advance by the stopper portion 162 is mounted on the circuit board 5. Then, by pressing the tip of the operation shaft 12, the coil spring 13 is compressed and the operation shaft 12 moves downward, and the pushing portion 161 is the operating portion 14 of the switch element 11 provided on the circuit board 5. The display switching of the liquid crystal display element D3 is performed by pressing.
JP 2003-200756 A

  However, in the vehicle meter described in Patent Literature 1, when the coil spring 13 is assembled into the outer wall portion of the stopper portion 162, there is a possibility that the coil spring 13 is erroneously assembled. That is, in FIG. 4 of Patent Document 1, for example, the coil spring 13 is placed along the inner wall of the left stopper portion 162 with the coil spring 13 shown on the left side in FIG. There is a possibility that the spring 13 portion is assembled along the inner wall of the rotation preventing portion 164.

  When the operation shaft 12 is mounted on the circuit board 5 in such a state, the operation shaft 12 is slightly inclined. Then, when the operation shaft 12 is pressed, the operating portion 14 of the switch element 11 may not be smoothly pressed.

  The present invention has been made in view of these points, and an object of the present invention is to provide a switch operation device capable of preventing the erroneous assembly of elastic members and reliably pressing the switch.

  In order to achieve the above object, the present invention includes a switch having a movable portion fixed to a circuit board, an operation member that operates the movable portion by a pressing operation, and an elastic member that biases the operating member in a reverse pressing direction. The operating member includes a pressing portion that operates the movable portion, a locking portion that is locked to the circuit board, a flange portion that faces the circuit board, and a protrusion projecting from the flange portion toward the circuit board side. A cylindrical holding wall on which the elastic member is held on the outer wall side, and spaced from the holding wall, and inserted into a hole or a notch in the circuit board to prevent the operation member from rotating. And the holding wall is divided into a plurality of walls, and prevents the elastic member from being erroneously held on the inner wall side of the wall or the inner wall side of the guide portion. Is provided.

  Further, the erroneous assembly prevention wall is provided integrally with the holding wall or the guide portion.

  It is possible to obtain a switch operation device capable of preventing the erroneous assembly of the elastic members and reliably pressing the switch.

  A vehicle instrument device to which a switch operation device of the present invention is applied will be described as an embodiment. FIG. 1 is a partial cross-sectional view of an instrument device showing a first embodiment of the present invention. FIG. 2 is a side view of the switch operating device in a direction orthogonal to FIG. FIG. 3 is a rear view of the operating member, and FIG. 4 is a cross-sectional view of the operating member (A-A cross section in FIG. 3).

  The instrument device includes a rigid circuit board 1 and a rotating shaft 2 that is attached to the circuit board 1 in a conductive state on the back side of the circuit board 1 and extends forward through the circuit board 1. A meter body 3, a pointer 5 fixed to the rotating shaft 2 and having an indicator 4, and a display unit such as a scale and a number indicating the speed of the vehicle, which is disposed behind the pointer 5 and is an indication target of the indicator 4 A display board 6 provided (not shown), a case 7 disposed between the display board 6 and the circuit board 1 and holding the display board 6, and a display arranged on the surface side of the periphery of the display board 6 A facing member 8 made of, for example, a black synthetic resin is provided to define the visible region of the plate 6.

  In addition, a see-through plate 9 made of a colorless and transparent synthetic resin disposed on the front side of the display board 6 and the turn-back member 8, a synthetic resin cover 10 covering the back side of the circuit board 1, and soldering to the circuit board 1 A switch 12 having a movable portion 11 attached and fixed, an operation member 13 for operating the movable portion 11 of the switch 12 by pressing, and a coil spring 14 as an elastic member for biasing the operation member 13 in the opposite pressing direction. The indicator light emitting diode 15 as a light source mounted on the circuit board 1 and the light emitting diode 16 for the display panel are provided. The light emitting diodes 15 and 16 are turned on when the surroundings are dark such as at night. The indication part 4 and the display part of the display board 6 are each illuminated. The operation member 13 is mounted on the circuit board 1, and the distal end side projects from the opening hole 17 provided in the see-through plate 9 to the outside of the instrument device.

  The case 7 is made of, for example, a white synthetic resin having a light shielding property, and includes a cylindrical portion 18 disposed between the display board 6 and the circuit board 1 so as to surround the pointer light emitting diode 15, and the display board light emitting diode 16. And an inclined wall 19 formed so as to surround the substrate, a mounting portion 20 on which the display plate 6 is mounted, an outer peripheral wall 21 and the like.

  The operation member 13 is made of, for example, black synthetic resin, and has a cylindrical shaft portion 22 and a flange portion 23 provided on the lower end side (circuit board 1 side) of the shaft portion 22 so as to face the circuit board 1. The two locking pieces 26 are provided below the flange portion 23 (on the circuit board 1 side) and on the extension of the shaft portion 22, and have locking portions 25 that lock into the through holes 24 of the circuit board 1. A cylindrical holding wall 27 projecting from the flange portion 23 toward the circuit board 1 so as to surround the locking piece 26, and spaced apart from the holding wall 27, and in the hole 28 of the circuit board 1. A guide portion 29 that is inserted and serves as a detent for the operation member 13 and a pressing portion 30 that operates the movable portion 11 of the switch 12 are provided.

  The two locking pieces 26 are provided opposite to each other, and the protruding directions of the locking portions 25 provided on the lower end side of the locking pieces 26 are opposite to each other and are orthogonal to the guide portion 29. Yes. The holding wall 27 is separated into two (plural) walls H 1 and H 2, and the separated portion corresponds to the protruding direction of the locking portion 25. That is, the holding wall 27 is not provided on the side where the locking portion 25 is provided (the protruding side). A misassembly prevention wall 31 is provided integrally with the wall H1 on the inner wall side of the wall H1 on the side away from the guide portion 29.

  A coil spring 14 is incorporated in the operation member 13. As shown in FIG. 1 or FIG. 2, the coil spring 14 is press-fitted and held on the outer wall side of the holding wall 27 of the operation member 13. At this time, as shown by a broken line in FIG. 3, even if the coil spring 14 is mistakenly installed between the inner wall side of the guide portion 29 and the inner wall side of the wall H1, an erroneous assembly preventing wall is provided on the inner wall side of the wall H1. Since 31 is provided, it cannot be mounted on the wrong assembly prevention wall 31.

  The operation member 13 in which the coil spring 14 is incorporated is attached to the circuit board 1. The lower end of the locking piece 26 is inserted into the through hole 24 of the circuit board 1 so that the guide part 29 fits the hole 28 of the circuit board 1. Then, the two locking pieces 26 are inserted while being bent toward the center, and when the locking portion 25 is removed from the back surface of the circuit board 1, the locking piece 26 returns to the original position, and the locking portion 25 is The circuit board 1 is locked to the back side. Then, the operation member 13 is biased forward (the see-through plate 9) by the repulsive force of the coil spring 14, and the operation member 13 is attached to the circuit board 1. Further, the guide portion 29 is inserted into the hole portion 28 of the circuit board 1 and serves as a detent for the operation member 13.

  The operation of the switch is performed by operating the operation member 13. That is, the coil spring 14 is compressed by pushing down the shaft portion 22 projecting outside the instrument device from the opening hole 17 of the see-through plate 9, and the pressing portion 30 presses the movable portion 11 of the switch 12, for example, traveling The display of distance (not shown) can be switched (switching between total integrated value and trip integrated value displayed on the liquid crystal or zero set of trip integrated value).

  As described above, the switch 12 having the movable portion 11 fixed to the circuit board 1, the operation member 13 that operates the movable portion 11 by a pressing operation, and the coil spring 14 that biases the operation member 13 in the opposite pressing direction. The operation member 13 includes a pressing portion 30 that operates the movable portion 11, a locking portion 25 that locks the circuit board 1, a flange portion 23 that faces the circuit board 1, and a circuit board 1 side from the flange portion 23. A cylindrical holding wall 27 projecting from the coil wall 14 and held on the outer wall side, and spaced apart from the holding wall 27 and inserted into the hole 28 of the circuit board 1 to prevent the operation member 13 from rotating. The holding wall 27 is divided into a plurality of (two) walls, and the misassembly prevention wall 31 is provided on the inner wall side of the wall, so that the inside of the guide portion 29 is mistakenly formed. Between the wall and the inner wall of the wall H1 Even if incorporate a spring 14, the inner wall side of the wall H1 is not assembled to Ayamagumi prevention wall 31 is provided. Therefore, when the shaft portion 22 is pressed downward, the switch operating device that can reliably press the switch 12 without pressing the movable portion 11 of the switch 12 smoothly can be obtained.

  Further, by providing the misassembly prevention wall 31 integrally with the holding wall 27, it is possible to prevent the misassembly prevention wall 31 from being deformed and to keep the shape of the misassembly prevention stably.

  FIG. 5 is a back view of the operating member used in the switch operating device according to the second embodiment of the present invention. Since the present embodiment is the same as the first embodiment except for the operation members, the other parts are the same as those in the first embodiment.

  The operation member 13 is made of, for example, black synthetic resin, and is provided below the cylindrical shaft portion 22, the flange portion 23, and the flange portion 23, as in the first embodiment, and penetrates the circuit board 1. Two locking pieces 26 having locking portions 25 to be locked in the holes 24, a cylindrical holding wall 27 protruding from the flange portion 23 toward the circuit board 1 so as to surround the locking pieces 26, A guide portion 29 that is provided apart from the holding wall 27 and is inserted into the hole portion 28 of the circuit board 1 to prevent the operation member 13 from rotating, and a pressing portion 30 that operates the movable portion 11 of the switch 12 are provided. (Refer to FIG. 1 or FIG. 2 except for FIG. 5).

  The two locking pieces 26 and the holding wall 27 separated into two are also provided in the same manner as in the first embodiment. The misassembly prevention wall 31 in this embodiment is provided integrally with the guide portion 29 on the inner wall side of the guide portion 29, and the protruding height of the misassembly prevention wall 31 is the same as the height of the holding wall 27. It is.

  A coil spring 14 is incorporated in the operation member 13. The coil spring 14 is press-fitted and held on the outer wall side of the holding wall 27 of the operation member 13. At this time, as shown by a broken line in FIG. 5, even if the coil spring 14 is mistakenly installed between the inner wall side of the wall H1 and the inner wall side of the guide portion 29, the coil spring 14 is prevented from being misassembled on the inner wall side of the guide portion 29. Since the wall 31 is provided, it cannot be mounted on the misassembly prevention wall 31.

  As described above, since the misassembly prevention wall 31 is provided on the inner wall side of the guide portion 29, the coil spring 14 cannot be assembled by mistake. Accordingly, similarly to the first embodiment, when the shaft portion 22 is pushed downward, the switch 12 can be surely pressed without pressing the movable portion 11 of the switch 12 smoothly. An operating device can be obtained.

  In each of the above embodiments, the holding wall 27 is separated into two walls H1 and H2. However, the holding wall 27 may be separated into any number as long as it is two or more. Further, when the misassembly prevention wall 31 is provided on the holding wall 27, it is not necessary to provide it on each separated wall, and it is sufficient to provide the necessary number of necessary walls.

  In addition, a hole 28 is provided in the circuit board 1, and a guide part 29 is inserted into the hole 28 to prevent the operation member 13 from rotating. However, a notch is provided at the edge of the circuit board 1. It is also possible to insert the guide portion 29 into the portion to prevent the operation member 13 from rotating.

The fragmentary sectional view of the meter device which shows a 1st embodiment to which the present invention is applied. The side view of the switch operating device. The back view of the operation member. Sectional drawing of the same operation member (AA cross section in FIG. 3). The back view of the operation member which shows 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circuit board 11 Movable part 12 Switch 13 Operation member 14 Coil spring (elastic member)
23 flange portion 25 locking portion 27 holding wall 28 hole portion 29 guide portion 30 pressing portion 31 misassembly prevention wall

Claims (2)

  A switch having a movable part fixed to a circuit board, an operation member that operates the movable part by a pressing operation, and an elastic member that urges the operation member in a non-pressing direction, the operation member including the movable part A pressing part for operating the circuit board, a locking part for locking to the circuit board, a flange part facing the circuit board, and protruding from the flange part to the circuit board side so that the elastic member is held on the outer wall side. A cylindrical holding wall, and a guide portion that is provided apart from the holding wall and that is inserted into a hole or a notch portion of the circuit board and serves as a detent for the operation member. Is separated into a plurality of walls, and an improper assembly prevention wall is provided on the inner wall side of the wall or the inner wall side of the guide portion to prevent the elastic member from being erroneously held. apparatus.   The switch operating device according to claim 1, wherein the misassembly prevention wall is provided integrally with the holding wall or the guide portion.

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