JP2008027838A - Switch operation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch operation device capable of preventing generation of abnormal noise by an operation member with an inexpensive structure. <P>SOLUTION: This switch operation device includes: a switch 13 fixed to a circuit board 2 (attachment member), and having a fixed part 11 and a tiltable movable shaft 12; and the operation member 14 having an insertion part 26 for inserting the movable shaft 12 therein, and an operation part 27, and operating the movable shaft 12 by rotating or pressing the operation part 27. An elastic piece 30 contacting a wall surface 29 of a first fixed part 11A (fixed part 11) by having elasticity is formed on the operation member 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a switch operating device that is used in, for example, an instrument device of a vehicle and includes an operation member that operates a switch arranged inside the instrument device from the outside of the instrument device.

  An instrument device mounted on a vehicle such as an automobile is equipped with an instrument such as a speedometer, a tachometer, and a fuel gauge, a liquid crystal display type od trip meter, etc. for displaying a travel distance. Then, by rotating or pressing the operation member protruding to the front side of the instrument device, the switch arranged in the instrument device is operated, for example, the luminance change of the light source for illuminating the instrument or the display of the od trip meter Switching is performed.

  The schematic structure on the switch side of such an instrument device will be described with reference to FIG. For example, when the switch 50 is a rotary type, the switch 50 having the fixed portion 51 and the columnar movable portion 52 is soldered to the circuit board 53. An operation member 54 is attached to the distal end side of the movable portion 52. The rotary switch 50 has a D-shaped cross section on the distal end side of the movable portion 52 so that the operation member 54 does not slip between the movable portion 52 and the operation member 54 when the operation member 54 is rotated. A character portion 52A). A concave hole that matches the D-shaped portion 52A is provided on the lower end side of the operation member 54 into which the D-shaped portion 52A of the movable portion 52 is inserted. The operation member 54 is attached to the movable portion 52 by inserting the D-shaped portion 52A of the movable portion 52 into the concave hole.

  The operation member 54 as described above is protruded to the front side of the instrument device, and the movable portion 52 is rotated by rotating the distal end side of the operation member 54 so that the brightness of the light source is adjusted. However, the distal end side of the operation member is as disclosed in Patent Document 1, for example. In the vehicle instrument structure described in Patent Document 1, a lid 7 is attached to the front surface of an instrument unit 5 (instrument apparatus) corresponding to each instrument, and an operation knob 8 (operation member) extending from the instrument unit 5 is attached to the lid. In the instrument structure projected from the operation knob hole 9 formed in 7, a guide member 10 made of a vibration isolating material and guiding the insertion of the operation knob 8 is provided on the back surface side of the lid 7 corresponding to the operation knob hole 9. The operation knob 8 is inserted through the guide member 10, and with this configuration, the vibration at the distal end side of the operation knob 8 is buffered by the guide member 10, and the generation of abnormal noise can be prevented. (See Patent Document 1).

The reason why the tip end side of the operation member fluctuates (swings) will be described with reference to FIG. The axis L of the operation member 54 (also the operation knob 8 of Patent Document 1) in FIG. 8 and the center of the operation knob hole 9 formed in the lid 7 do not coincide with each other, and the position may be slightly shifted. The movable part 52 can be slightly tilted with respect to the fixed part 51 so that the operation knob 8 can be inserted into the operation knob hole 9 even in such a state, due to an integration error of individual parts. (The front end side of the movable portion 52 is slightly inclined in an arbitrary direction). In addition, when there is a gap between the outer periphery of the D-shaped portion 52A of the movable portion 52 and the inner periphery of the recessed hole of the operation member 54, the leading end side of the operation member 54 is inclined. When vibration is applied to the instrument device in such a state, since the operation member 54 (operation knob 8) is long, the deflection width on the tip side becomes large, and abnormal noise is generated by hitting the periphery of the operation knob hole 9. There is a fear.
JP 2001-338275 A

  However, in the instrument structure described in Patent Document 1, it is necessary to attach the guide member 10 to the operation knob hole 9, which increases the number of parts and increases the cost. The present invention has been made in view of these points, and an object of the present invention is to provide a switch operating device that can prevent generation of abnormal noise by an operating member with an inexpensive structure.

  In order to achieve the above object, the present invention includes a switch that is fixed to an attachment member and includes a fixed portion and a movable shaft that can be tilted, an inserted portion into which the movable shaft is inserted, and an operation portion, and the operation portion. And an operating member that operates the movable shaft by rotating or pressing the elastic member. The operating member is provided with an elastic piece that elastically contacts the wall surface of the fixed portion. .

  A switch having a fixed portion fixed to the mounting member and a movable shaft tiltable; a guide member disposed around the switch; an insertion portion into which the movable shaft is inserted; and an operation portion. And an operation member that operates the movable shaft by rotating or pressing the operation portion, and an elastic piece that elastically contacts the wall surface of the guide member is provided on the operation member. It is a thing.

  Further, the elastic piece is in contact with the wall surface at a point.

  A plurality of the elastic pieces are provided along the circumferential direction of the operation member, and the plurality of elastic pieces are provided within a half-circumference range of the operation member.

  Further, three or more elastic pieces are provided at substantially equal intervals along the circumferential direction of the operation member.

  It is possible to obtain a switch operating device that can prevent abnormal noise from being generated by the operating member with an inexpensive structure.

  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, and FIG. 2 is a cross-sectional view of a switch operating device. FIG. 3 is a view (rear view) of the operating member as viewed from the switch side, and FIG. 4 is a partial front view of the elastic piece provided on the operating member (as viewed in the direction of arrow Z in FIG. 3).

  The instrument device includes a pointer-type speedometer 1, for example. The speedometer 1 has a hard circuit board 2 (attachment member) and a rotating shaft 3 that is attached to the back side of the circuit board 2 in a conductive state with the circuit board 2 and extends forward through the circuit board 2. An instrument main body 4, a pointer 6 provided with an instruction unit 5, and a display board 7 disposed behind the pointer 6 and provided with a display unit (not shown) such as numerals and scales indicating the speed of the vehicle. Yes.

  Further, a case member 8 disposed between the display board 7 and the circuit board 2 and holding the display board 7, and a pointer light emitting diode 9 as a light source mounted on the circuit board 2 and illuminating the indication portion 5 of the pointer 6. And a display panel light emitting diode 10 as a light source for illuminating the display section of the display panel 7. When the pointer light emitting diode 9 emits light at night or the like, the indicator section 5 of the pointer 6 shines. It is supposed to be. Similarly, when the display board light emitting diode 10 emits light at night or the like, the display portion of the display board 7 is transmitted and illuminated so that it can be seen.

  Further, a switch 13 fixed to the circuit board 2 and having a fixed portion 11 and a movable shaft 12, an operation member 14 for operating the movable shaft 12 of the switch 13 by rotating or pressing, and a back side of the circuit board 2 A cover 15 made of synthetic resin that covers the front of the display board 7, a turn-back member 16 that is arranged on the front side of the periphery of the display board 7 and defines a visible region of the display board 7, for example, made of black synthetic resin, and the front of the display board 7 and the turn-back member 16 A see-through plate 17 made of a colorless and transparent synthetic resin is provided on the side. Note that the operation member 14 penetrates the display plate 7, and the distal end side protrudes from the opening hole 18 provided in the see-through plate 17 to the outside of the instrument device.

  The case member 8 is made of, for example, a white synthetic resin having a light shielding property, and includes a cylindrical portion 19 disposed between the display board 7 and the circuit board 2 so as to surround the pointer light emitting diode 9, and a display board light emitting diode. 10 includes an inclined wall 20 that is inclined so as to surround 10, a placement portion 21 on which the display plate 7 is placed, a peripheral wall 22, and the like. In addition, the mounting part 21 corresponding to the switch 13 and the display plate 7 are provided with round holes 23 through which the operation member 14 passes.

  The switch 13 has a fixed portion 11 and a movable shaft 12. The fixing portion 11 includes a columnar first fixing portion 11A and a second fixing portion 11B that is fixed to the circuit board 2 by soldering. Then, by rotating the movable shaft 12, for example, the light emission luminance of the display panel light emitting diode 10 that illuminates the display section of the display panel 7 can be changed (adjusted), and the movable shaft 12 is fixed to the fixed section 11 side. By pressing the button, for example, it is possible to switch the display of a liquid crystal display type od trip meter (not shown) that displays the travel distance. The movable shaft 12 is a self-returning type that returns to its original position when the pushing operation is stopped.

  Similarly to the above, the movable shaft 12 can be slightly inclined with respect to the fixed portion 11 (the distal end side of the movable shaft 12 is slightly inclined in an arbitrary direction). Movement along the heart direction is possible (can be tilted). The fulcrum of the movable shaft 12 is near the boundary between the first fixed portion 11A and the second fixed portion 11B (P position in FIG. 2), and the distal end side of the movable shaft 12 is slightly inclined with the P point position as a fulcrum. (The movable shaft 12 of the switch 13 is 1 to 1.5 degrees). The movable shaft 12 has a cylindrical shape, but the tip side has a D-shaped cross section (D-shaped portion 24).

  The operation member 14 has a substantially cylindrical shape made of, for example, black synthetic resin, and includes an insertion portion 26 provided with a concave hole 25 into which the D-shaped portion 24 of the movable shaft 12 is inserted, and the see-through plate 17 from the insertion portion 26. And the operation unit 27 on the side. The cross-sectional shape of the recessed hole 25 is the same as that of the D-shaped portion 24. A flange 28 having a diameter larger than that of the round hole 23 provided in the placement portion 21 of the case member 8 is provided at the lower end of the inserted portion 26. The flange 28 and the mounting portion 21 prevent the operation member 14 from coming out forward (on the side of the see-through plate 17). The cross-sectional shape of the concave hole 25 is not necessarily the same as the cross-section of the D-shaped portion 24. When the movable shaft 12 of the switch 13 is inserted into the inserted portion 26 and the operation member 14 is turned, the idling portion 25 does not idle. It only has to be like this.

  The operation member 14 has an elastic piece 30 that elastically contacts the wall surface 29 of the first fixed portion 11 </ b> A of the switch 13 in a state where the movable shaft 12 is inserted into the insertion portion 26. The lower end side is integrally provided on the back surface of the flange 28. As shown in FIG. 3, two elastic pieces 30 in the present embodiment are provided in a plate shape along the circumferential direction of the inserted portion 26, and the elastic piece 30 has a lower end side of the operation member 14. A linear protrusion 31 is provided in a direction orthogonal to the axis S1. The cross section of the protrusion 31 is a semicircle as shown in FIG. Therefore, although the protrusion 31 is provided on the flat elastic piece 30, the first fixing portion 11 </ b> A is cylindrical, so that the protrusion 31 comes into contact with the wall surface 29 of the first fixing portion 11 </ b> A at a point. .

  In addition, as shown in FIG. 3, the two elastic pieces 30 are provided in a quarter circumference of the inserted portion 26 (operation member 14). That is, the angle formed by each line connecting the portion where the protrusion 31 is in contact with the wall surface 29 and the center point Q of the operation member 14 is 90 degrees. It should be noted that the position where the protrusion 31 is in contact with the wall surface 29 is within a half circumference range of the operation member 14 (the angle formed by each line connecting the position where the protrusion 31 is in contact with the wall surface 29 and the center point Q of the operation member 14 is 180. The number of elastic pieces 30 provided in this range is not limited to two.

  The operation of the switch 13 is performed by operating the operation member 14. That is, the movable shaft 12 is rotated by rotating the operation unit 27 of the operation member 14, and the light emission luminance of the display panel light emitting diode 10 that illuminates the display unit of the display panel 7 can be changed as described above. it can. Further, when the top of the operation unit 27 is pushed toward the switch 13, the movable shaft 12 is pushed toward the fixed unit 11. it can.

  Next, the operation of the elastic piece 30 will be described. In a state where the movable shaft 12 is inserted into the insertion portion 26 of the operation member 14, the protrusion 31 provided on the elastic piece 30 has elasticity on the wall surface 29 of the first fixing portion 11 </ b> A of the switch 13 as described above. Since there is a fulcrum of the movable shaft 12 on the second fixed portion 11B side from the contact point, the distal end side of the operation member 14 is the side on which the elastic piece 30 is provided. Slightly tilted. In the case of this embodiment, since two elastic pieces 30 are provided, it is inclined in the X direction in FIG. The amount of inclination is the maximum inclination angle of the movable shaft 12 held as a function of the switch 13 (1 to 1.5 degrees in the case of this switch 13).

  When the distal end side of such an operation member 14 is inserted into the opening hole 18 of the see-through plate 17, the operation member 14 is inclined and the center of the opening hole 18 and the axis S1 of the operation member 14 are misaligned. In addition, since the movable shaft 12 can be tilted, the distal end side of the operation member 14 can be moved and inserted when a force greater than the elasticity of the elastic piece 30 is applied to the operation member 14. After the insertion, the distal end side of the operation member 14 is inclined by the elastic piece 30, and the inclined side abuts against the opening hole 18 as shown in FIG. 1, and a gap may be generated on the opposite side.

  When vibration is applied to the instrument device in such a state, the side on which the operation member 14 is inclined comes into contact with the opening hole 18 of the see-through plate 17 and further movement is prevented. Even if there is a gap, the other side does not shake unless vibrations greater than the elasticity of the elastic piece 30 are applied. In this way, the vibration on the distal end side of the operation member 14 is limited only by providing the operation member 14 with the elastic piece 30 that elastically contacts the wall surface 29 of the first fixing portion 11A, and the generation of abnormal noise can be suppressed. .

  Further, since the protrusion 31 provided on the elastic piece 30 is in contact with the wall surface 29 of the first fixing portion 11A at a point, the wall surface of the first fixing portion 11A when the operating member 14 is rotated or pressed. The frictional resistance generated between 29 and the protrusion 31 is small, and the operation member 14 can be operated smoothly. Further, by providing two elastic pieces 30 within a quarter (90 degrees) range of the operation member 14, the elastic piece 30 is 1 in the deflection of the operation member 14 in the direction orthogonal to the X direction in FIG. 3. It is suppressed compared to the case of pieces. Of course, the number of elastic pieces 30 may be one.

  FIG. 5 is a back view of the operation member 14 showing the second embodiment of the present invention. Since the present embodiment is different from the first embodiment only in the operation member 14, the same reference numerals are given to the same or corresponding parts as in the first embodiment, and the detailed description thereof is omitted.

  As shown in FIG. 5, the operation member 14 in the present embodiment is provided with three elastic pieces 30 on the back surface of the flange 28 in a plate shape along the circumferential direction of the insertion portion 26 at substantially equal intervals. is there. Similarly to the first embodiment, a linear protrusion 31 is provided on the lower end side of the elastic piece 30 in a direction orthogonal to the axis S1 of the operation member 14. The cross section of the protrusion 31 is a semicircle as in the first embodiment (same as in FIG. 2). Therefore, although the protrusion 31 is provided on the flat elastic piece 30, the first fixing portion 11 </ b> A is cylindrical, so that the protrusion 31 comes into contact with the wall surface 29 of the first fixing portion 11 </ b> A at a point. .

  In this way, three elastic pieces 30 are provided at substantially equal intervals along the circumferential direction of the operation member 14, and the protrusions 31 provided on the elastic pieces 30 have elasticity on the wall surface 29 of the first fixing portion 11A. Because of the contact at the point, when the insertion portion 26 of the operation member 14 is inserted into the movable shaft 12, the distal end side of the operation member 14 is difficult to tilt. Therefore, as shown in FIG. 1, there is no fear that the operation member 14 is displaced in one direction with respect to the opening hole 18 of the see-through plate 17, and a gap is formed around the operation member 14.

  In such a state, the tip side of the operation member 14 does not swing even if there is a gap, unless a vibration greater than the elasticity of the elastic piece 30 is applied to the instrument device. In this way, the vibration on the distal end side of the operation member 14 can be suppressed only by providing the operation member 14 with the elastic piece 30 that elastically contacts the wall surface 29 of the first fixing portion 11A, and abnormal noise is generated. Disappears. Further, since the protrusion 31 provided on the elastic piece 30 is brought into contact with the wall surface 29 of the first fixing portion 11A at a point, the frictional resistance when rotating or pressing the operation member 14 can be reduced. The operation of the member 14 can be performed smoothly. Although three elastic pieces 30 are provided, three or more elastic pieces 30 may be provided as long as they are substantially equidistant along the circumferential direction of the operation member 14.

  FIG. 6 is a cross-sectional view of a switch operating device showing a third embodiment of the present invention, and FIG. 7 is a back view of the operating member 14. In the present embodiment, a guide member 32 is disposed around the switch 13.

  The guide member 32 is formed integrally with the case member 8 and has a cylindrical shape with a circular cross section. The elastic piece 30 provided on the operation member 14 is elastically brought into contact with the inner wall surface 29A of the guide member 32. It is configured. Two elastic pieces 30 are provided on the edge of the flange 28 in a flat plate shape. Further, a substantially hemispherical protrusion 31 is provided on the lower end side of each elastic piece 30 so as to abut on the inner wall surface 29A of the guide member 32 at a point.

  Next, the operation of the elastic piece 30 will be described. In a state where the movable shaft 12 is inserted into the insertion portion 26 of the operation member 14, the projection 31 provided on the elastic piece 30 is in contact with the wall surface 29 </ b> A of the guide member 32 with elasticity as described above. In addition, since the fulcrum P of the movable shaft 12 is below the contact point (on the second fixed portion 11B side), the distal end side of the operating member 14 is the side on which the elastic piece 30 is provided. Is slightly inclined in the opposite direction. In the case of this embodiment, since two elastic pieces 30 are provided, it is inclined in the Y direction in FIG. The amount of inclination is the maximum inclination angle of the movable shaft 12 held as a function of the switch 13.

  When the distal end side of the operation member 14 is inserted into the opening hole 18 of the see-through plate 17, the center of the opening hole 18 and the axis S1 of the operation member 14 are misaligned as in the first embodiment. In this case, the distal end side of the operation member 14 can be inserted into the opening hole 18 of the see-through plate 17. After the insertion, the distal end side of the operation member 14 is inclined by the elastic piece 30, the inclined side abuts the opening hole 18, and a gap may be generated on the opposite side (see FIG. 1).

  When vibration is applied to the instrument device in such a state, the side on which the operation member 14 is inclined comes into contact with the opening hole 18 of the see-through plate 17 and further movement is prevented. Even if there is a gap, the other side does not shake unless vibrations greater than the elasticity of the elastic piece 30 are applied. In this way, the vibration on the distal end side of the operation member 14 is limited only by providing the operation member 14 with the elastic piece 30 that elastically contacts the wall surface 29A of the guide member 32, and the generation of abnormal noise is suppressed.

  Further, since the protrusion 31 provided on the elastic piece 30 is brought into contact with the wall surface 29A of the guide member 32 at a point, the frictional resistance when the operation member 14 is rotated or pressed can be reduced. Operation can be performed smoothly. The shape of the guide member 32 is not limited to a circular cross section, and may be a regular square, for example. Even in such a case, it is desirable to use elastic pieces and protrusions that come into contact with the wall surface 29A at points. Further, the guide member 32 may be separate from the case member 8.

  Further, in each embodiment, the operation member 14 is the switch 13 that is operated by turning and pressing, but a switch having only one of the functions may be used.

The fragmentary sectional view of the meter device which shows a 1st embodiment to which the present invention is applied. Sectional drawing of the switch operating device. The back view of the operation member. The fragmentary front view of the elastic piece provided in the operation member (Z arrow view in FIG. 3). The back view of the operation member which shows 2nd Embodiment of this invention. Sectional drawing of the switch operating device which shows 3rd Embodiment of this invention. The back view of the operation member. Sectional drawing which shows the conventional switch operating device.

Explanation of symbols

2 Circuit board (mounting member)
DESCRIPTION OF SYMBOLS 11 Fixed part 11A 1st fixed part 12 Movable shaft 13 Switch 14 Operation member 26 Insertion part 27 Operation part 29, 29A Wall 30 Elastic piece S1 Axis 31 Projection 32 Guide member

Claims (5)

  A switch having a fixed part and a movable shaft that can be tilted and fixed to an attachment member, an inserted part into which the movable shaft is inserted, and an operation part, and the movable part by rotating or pressing the operation part. A switch operation device comprising an operation member for operating a shaft, wherein the operation member is provided with an elastic piece that elastically contacts the wall surface of the fixed portion.   A switch fixed to the mounting member and having a fixed portion and a movable shaft tiltable; a guide member disposed around the switch; an inserted portion into which the movable shaft is inserted; and an operation portion. In the switch operating device including an operating member that operates the movable shaft by rotating or pressing the operating portion, an elastic piece that elastically contacts the wall surface of the guide member is provided on the operating member. A switch operating device characterized by the above.   The switch operating device according to claim 1, wherein the elastic piece is in contact with the wall surface at a point.   A plurality of the elastic pieces are provided along a circumferential direction of the operation member, and the plurality of elastic pieces are provided within a half circumference range of the operation member. The switch operating device according to any one of claims 1 to 3.   The switch operating device according to any one of claims 1 to 3, wherein three or more elastic pieces are provided at substantially equal intervals along a circumferential direction of the operating member.

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