JP2008004273A - Seesaw switch structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seesaw switch structure with excellent operating feeling and fine appearance as seen from the front by making small a gap between a switch knob and an opening of the switch knob. <P>SOLUTION: In the seesaw switch mechanism provided with a pair of bearings 12d, 12d fitted at either side of an opening for switching 12a of a switch panel 12, a switch knob 13 equipped with a pair of pressing parts A, B rotated in a direction contrary from each other with rotating axes 13d, 13d supported by the pair of bearings 12d, 12d as a center, lever parts 13e, 13e fitted to each pressing part A, B, and tact switches 14A, 14B fitted in correspondence with each lever part 13e, 13e, long holes 12e, 12e are provided at the bearings 12d, 12d extended in a press-down direction and the rotating axes 13d, 13d are mounted on the long holes 12e, 12e in free sliding and supported by the bearings 12d, 12d. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a seesaw switch provided on an in-vehicle switch panel.

  Conventionally, a seesaw switch structure as shown in FIG. 1 is known.

  FIG. 1 is an exploded perspective view illustrating a seesaw switch structure according to a conventional example. In FIG. 1, 1 is a wiring board, 2 is a switch panel, and 3 is a switch knob.

  On the wiring board 1, a tact switch 4A and a tact switch 4B are mounted at a predetermined interval.

  The tact switch 4A and the tact switch 4B have the same configuration, and each of the tact switches 4A and 4B includes a substantially rectangular parallelepiped switch body 4a and a substantially cylindrical push button portion 4b.

  The switch knob 3 as a whole has a substantially inverted housing shape, and has a substantially rectangular upper wall portion 3a, a pair of side long walls 3b, 3b facing each other, and a pair of side short walls 3c, 3c.

  A pair of rotating shafts 3d and 3d are formed so as to project away from each other at the center in the longitudinal direction of the side long walls 3b and 3b.

  On the back side of the upper wall 3a, a pair of lever portions 3e, 3e in the form of rods are located near both ends in the longitudinal direction and are perpendicular to the upper wall 3a with the same interval as the interval between the tact switches 4A, 4B. It is formed toward the back side.

  The switch panel 2 has a substantially rectangular switch opening 2a.

  Of the peripheral edge of the switch opening 2a, the longer side is referred to as side long edges 2b and 2b, and the shorter side is referred to as side short edges 2c and 2c.

  In the switch panel 2, plate-like bearing portions 2 d and 2 d are formed on both outer sides in the center in the longitudinal direction of the switch opening 2 a so as to face each other and to be perpendicular to the switch panel 2 toward the back side.

  Round holes 2e and 2e are formed at substantially the center of the bearing portions 2d and 2d, respectively.

  The rotary shafts 3d and 3d of the switch knob 3 are inserted into the round holes 2e and 2e, respectively, and the switch knob 3 is mounted so as to be rotatable with respect to the switch panel 2.

  When the wiring board 1 and the switch panel 2 are fixed via a housing (not shown) or the like, the wiring board 1 and the switch panel 2 are arranged in parallel, and the tip portions 3g and 3g of the lever portions 3e and 3e are connected to each other. The push button portions 4b and 4b are in contact with the upper end surfaces 4c and 4c, respectively.

  Of the surface of the upper wall portion 3a of the switch knob 3, the surface on one side is the pressing portion A and the surface on the other side is the pressing portion B with respect to the center in the longitudinal direction.

  For example, when the pressing portion A is pressed with a finger, the switch knob 3 rotates about the rotation shafts 3d and 3d, and the tip portion 3g of the lever portion 3e on the pressing portion A side is accompanied by the tact switch. Press the 4A push button 4b. The same applies to the case where the pressing part B is pressed.

In addition, as a invention related to a seesaw switch, a switch driving structure of Patent Document 1 and a push button / seesaw switch of Patent Document 2 are known. In any of these inventions, a structure is disclosed in which the rotation axis of the switch knob is supported by an elongated hole.
Japanese Utility Model Publication No. 62-25444 Japanese Utility Model Publication No. 62-57349

  However, in the seesaw switch structure according to the conventional example, the rotation shaft 3d of the switch knob 3 is supported by the bearing portions 2d each having the round hole 2e, so that, for example, when the pressing portion A of the switch knob 3 is pressed. Further, the distal end portion 3g of the lever portion 3e provided on the pressing portion A side moves so as to draw an arc L1 shown in FIG. 5A around the rotation shaft 3d.

  When the distal end portion 3g moves so as to draw an arc L1 about the rotation shaft 3d, the distal end portion 3g presses the push button portion 4b while sliding on the upper end surface 4c of the push button portion 4b.

At this time, with respect to the stroke amount a in the pressing direction that is the minimum required to turn the tact switch 4A to the ON state, the tip portion 3g extends along the upper end surface 4c by the slide amount b ₁ shown in FIG. Slide.

  At this time, the push button portion 4b of the tact switch 4A moves so as to incline with respect to the direction of the axis of symmetry of the push button portion 4b, and this inclining movement is transmitted to the switch knob 3 via the lever portion 3e. For the person who operates, it feels as a response when the person presses the pressing portion A.

  Thus, in the seesaw switch structure according to the conventional example, the operation feeling of the switch may be impaired.

  Further, if it is attempted to obtain the minimum stroke amount a in the pressing direction required to turn the tact switch 4A on only by rotating the switch knob 3, the rotation angle of the switch knob 3 is set larger than a certain angle. There is a need.

  When the rotation angle of the switch knob 3 is larger than a certain angle, the swept area of the side short walls 3c, 3c of the switch knob 3 increases with the rotation of the switch knob 3, so that the side short walls 3c, 3c It becomes necessary to leave a large gap between the surface and the side short edges 2c, 2c of the switch panel 2.

  For this reason, if the gap between the surface of the side short wall 3c and the side short edge 2c of the switch panel 2 is wide enough to prevent the surface of the side short wall 3c and the side short edge 2c of the switch panel 2 from interfering with each other, the switch panel There was a possibility that the appearance when 2 was seen from the front side might be spoiled.

  Accordingly, an object of the present invention is to provide a seesaw switch structure which is excellent in operation feeling and has a good appearance when viewed from the front side by reducing the gap between the switch knob and the switch knob opening. ing.

In order to achieve the above object, the invention described in claim 1 includes a pair of bearing portions provided on both sides of the opening of the switch panel,
A switch knob having a pair of operation portions that are rotated in opposite directions around a rotation axis supported by the pair of bearing portions;
A push bar provided in each of the operation sections;
Push switches provided corresponding to the respective push rods;
A seesaw switch structure comprising:
A long hole extending in the pressing direction is formed in the bearing portion, and the rotating shaft is slidably mounted in the long hole and is supported by the bearing portion.

  According to a second aspect of the present invention, the switch panel is provided with a guide portion extending in a pressing direction, and the switch knob is provided with a guided portion extending in the pressing direction. The guide portion, the guided portion, The seesaw switch structure according to claim 1, which prevents the switch knob from collapsing due to the cooperation.

  According to the first aspect of the present invention configured as described above, since the rotation shaft slides while rotating in the elongated hole, the stroke amount in the pressing direction necessary for operating the push switch is reduced. The amount of sliding by sliding in the elongated hole of the rotating shaft is borne by the part, and the rotation angle of the switch knob can be small.

  For this reason, the push switch is pushed almost straight by the push bar, the push bar moves smoothly, and this smooth movement is transmitted to the switch knob. As described above, the switch knob moves smoothly, so that a feeling of operation when the switch knob is pressed is good.

  In addition, the gap between the switch knob and the opening is not necessary if the cross-sectional shape viewed from the rotation axis direction of the switch knob and the cross-sectional shape viewed from the rotation axis direction of the opening are not along the arbitrary edge in the rotation direction. Since the switch panel can be made small, it looks good when the switch panel is viewed from the front side.

  According to the second aspect of the present invention, since the switch knob is prevented from falling by the cooperation of the guide portion and the guided portion, a portion of the switch knob operation portion closer to one side in the rotational axis direction is pushed. However, since the switch knob hardly tilts with respect to the rotation axis direction, the push bar is hardly displaced from the center of the push switch.

  For this reason, reliable switching can be performed, and the switch knob is not caught on the periphery of the opening or the like, so that a feeling of operation when the switch knob is pressed is good.

  Hereinafter, the present invention will be described based on examples of embodiments according to the present invention.

  The seesaw switch of the present embodiment is used for, for example, a power window opening / closing switch provided in a driver's seat of an automobile, and the switch is in an ON state only while the push button is pressed and released. This is a seesaw switch that turns off the switch.

<Constitution>
FIG. 2 is an exploded perspective view illustrating the seesaw switch structure according to the present embodiment. In FIG. 2, 11 is a wiring board, 12 is a switch panel, and 13 is a switch knob.

  FIG. 3 is a four-side view of the switch knob 13, and FIG. 4 is a four-side view of the switch panel 12.

  On the wiring board 11, a tact switch 14A and a tact switch 14B are mounted at a predetermined interval.

  The tact switch 14A and the tact switch 14B have the same configuration, and each of the tact switches 14A and 14B includes a substantially rectangular parallelepiped switch body 14a and a substantially cylindrical push button portion 14b.

  As shown in FIG. 2, the switch body 14a has a substantially square shape when viewed from the top, and the push button portion 14b is provided at the center position of the switch body 14a when viewed from the top.

  A spring (not shown) is provided in the switch body 14a, and this spring always urges the push button portion 14b upward, and the push button portion 14b is only pressed while the push button portion 14b is depressed. Is depressed, and when not depressed, the push button portion 14b is returned to the original position.

  The tact switches 14A and 14B are momentary push switches, and the switches are turned on only while the push button portion 14b is pressed, and the switches are turned off when released.

  As shown in FIG. 2, the switch knob 13 has a generally inverted casing shape as a whole, and has a substantially rectangular upper wall portion 13a, a pair of side long walls 13b and 13b facing each other, and a pair 1 facing each other. It has a pair of short side walls 13c, 13c.

  The side long wall 13b and the side short wall 13c are substantially rectangular, and the side long wall 13b extends from both ends in the width direction of the upper wall portion 13a toward the back side perpendicular to the upper wall portion 13a. 13c extends from both longitudinal ends of the upper wall portion 13a toward the back side perpendicular to the upper wall portion 13a.

  A pair of pivot shafts 13d and 13d are formed so as to project away from each other at the center in the longitudinal direction of the side long walls 13b and 13b.

  On the back side of the upper wall portion 13a, a pair of lever portions 13e, 13e having a rod shape are provided near the both ends in the longitudinal direction and perpendicular to the upper wall portion 13a with the same interval as the interval between the tact switches 14A, 14B. It is formed toward the back side.

  A pair of guided flange portions 13f and 13f having a substantially rectangular shape are integrally formed in a direction slightly away from the center in the longitudinal direction of the short side walls 13c and 13c so as to face each other.

  The switch panel 12 has a substantially rectangular switch opening 12a.

  Of the peripheral edge of the switch opening 12a, the longer side is referred to as side long edges 12b and 12b, and the shorter side is referred to as side short edges 12c and 12c.

  In the switch panel 12, plate-like bearing portions 12d and 12d are formed on both outer sides in the center in the longitudinal direction of the switch opening 12a so as to face each other and to be perpendicular to the switch panel 12 toward the back side.

  Long holes 12e and 12e are formed at substantially the center of the bearing portions 12d and 12d, respectively.

  The long holes 12e and 12e are elongated in the vertical direction with respect to the switch panel 12, respectively.

  At the center position of each of the side short edges 12c, 12c, a pair of substantially rectangular guide flange portions 12f, 12f arranged in parallel project from the back surface side.

  The gap between the pair of guide flange portions 12 f and 12 f is slightly wider than the thickness of the guided flange portion 13 f provided on the switch knob 13.

  Rotating shafts 13d and 13d of the switch knob 13 are inserted into the long holes 12e and 12e, respectively, and the switch knob 13 is mounted so as to be rotatable with respect to the switch panel 12.

  One guided flange portion 13f of the switch knob 13 is inserted between the one guide flange portions 12f and 12f of the switch panel 12, and the other guided flange portion 13f is inserted between the other guide flange portions 12f and 12f. Has been.

  When the wiring board 11 and the switch panel 12 are fixed via a housing (not shown) or the like, the wiring board 11 and the switch panel 12 are arranged in parallel, and the tip portions 13g and 13g of the lever portions 13e and 13e are connected to each other. The push buttons 14b and 14b are in contact with the upper end surfaces 14c and 14c, respectively.

  Of the surface of the upper wall portion 13a of the switch knob 13, the surface on one side is the pressing portion A and the surface on the other side is the pressing portion B with respect to the center in the longitudinal direction.

  For example, when the pressing portion A is pressed with a finger, the switch knob 13 rotates about the rotation shafts 13d and 13d, and the tip portion 13g of the lever portion 13e on the pressing portion A side is accompanied by the tact switch. The push button 14b of 14A is pressed. The same applies to the case where the pressing part B is pressed.

  Therefore, when the pressing portion A is pressed with a finger, the tact switch 14A is in an ON state only while the pressing portion A is being pressed, and when the pressing portion B is pressed with a finger, the tact switch 14B is only ON while being pressed. It becomes a state.

<About the movement of the switch knob 13>
FIG. 5 is a diagram for explaining the difference between the movement of the switch knob 3 of the seesaw switch according to the conventional example and the movement of the switch knob 13 of the seesaw switch according to the embodiment when the switch knob is pressed. (A) of a figure is a side view of the seesaw switch concerning a prior art example, and is AA sectional drawing of FIG. (B) of a figure is a side view of the seesaw switch which concerns on an Example, and is BB sectional drawing of FIG.

  FIG. 6 is a side view of the switch knob 13 of the seesaw switch according to the embodiment as viewed from one side in the longitudinal direction, and is a cross-sectional view taken along the line CC in FIG. FIG. 4 is a diagram illustrating a state in which a guided flange 13f of a switch knob 13 is guided by a pair of guide flange portions 12f and 12f of a switch panel 12.

  As shown in FIG. 5, in the seesaw switch structure according to the embodiment, the rotation shafts 13d and 13d of the switch knob 13 are supported by bearing portions 12d and 12d having elongated holes 12e and 12e, respectively. When the pressing portion A of the switch knob 13 is pressed, the rotating shafts 13d and 13d slide in the elongated holes 12e and 12e while rotating, and the lever portion 13e provided on the pressing portion A side is slid. The distal end portion 13g moves to draw a curve L2 shown in FIG. 5B, for example.

  When the distal end portion 13g moves so as to draw a curve L2 about the rotation shafts 13d and 13d, the distal end portion 13g presses the push button portion 14b while sliding on the upper end surface 14c of the push button portion 14b.

At this time, the distal end portion 13g slightly presses the push button portion 14b while sliding slightly on the upper end surface 14c of the push button portion 14b, and the stroke amount in the pressing direction that is the minimum required to turn on the tact switch 14A. against a, the tip portion 13g is slid by sliding amount b ₂ shown in FIG. 5 (b) along the upper end surface 14c.

<Function and effect>
As shown in FIG. 5, since the rotating shaft 13d slides while rotating in the elongated hole 12e, the minimum stroke amount a in the pressing direction required to turn on the tact switches 14A and 14B. A part of the rotating shaft 13d is slidable in the elongated hole 12e, and the rotation angle of the switch knob 13 can be small.

Accordingly, the swing angle of the lever portion 13e extending from the back surface of the switch knob 13 is also smaller than that of the conventional one, so that the sliding amount b ₂ when the tip portion 13g of the switch knob 13 slides along the upper end surface 14c. Is smaller than the sliding amount b ₁ when the tip 3g of the switch knob 3 in the conventional example slides along the upper end surface 4c.

  For this reason, the tact switch 14A and the push button part 14b of the tact switch 14B are pressed almost straight by the tip part 13g of the lever part 13e, the tip part 13g moves smoothly, and this smooth movement is transmitted to the switch knob 13.

  Thus, the switch knob 13 moves smoothly, so that the operation feeling when the switch knob 13 is pressed is good.

In the seesaw switch structure of the present invention, the rotation angle of the switch knob 13 is smaller than in the conventional case, so that the area where the side short walls 13c, 13c of the switch knob 13 sweep is smaller than in the conventional example. Therefore, the length c ₂ of the gap between the surface of the side short walls 13c, 13c and the side short edges 12c, 12c of the switch panel 12 can be made smaller than the length c ₁ of the gap in the conventional example. It looks good when the panel 12 is viewed from the front side.

  Further, as shown in FIG. 6, since the guided flange portion 13f is inserted and guided between the guide flange portions 12f and 12f, the pressing portions A and B of the switch knob 13 are closer to one side in the rotational axis direction. Even if the portion is pressed, the switch knob 13 hardly tilts with respect to the rotational axis direction, and the tip end portions 13g and 13g hardly deviate from the centers of the push button portions 14b and 14b of the tact switches 14A and 14B.

  Therefore, reliable switching can be performed, and the switch knob 13 does not get caught on the periphery of the switch opening 12a.

  As mentioned above, although the Example of embodiment which concerns on this invention has been explained in full detail with reference to drawings, the concrete structure is not limited to this embodiment, and the design of the grade which does not deviate from the summary of this invention Modifications are included in the present invention.

  In the embodiment of the present invention, a tact switch is used. However, the switch is not necessarily a tact switch as long as it is a push type switch. Another type of push switch may be used, or one built on the wiring board 11 may be used.

  In the embodiment of the present invention, a momentary tact switch is used, but the switch is not necessarily a tact switch as long as it is a push type switch. For example, an alternate type push switch in which an ON state and an OFF state are alternately switched each time the button is pressed may be used.

It is a disassembled perspective view explaining the seesaw switch structure concerning a prior art example. It is a disassembled perspective view explaining the seesaw switch structure concerning an Example. It is a 4th page figure of the switch knob of the seesaw switch concerning an example. It is a 4th page figure of the switch panel of the seesaw switch concerning an example. It is a figure explaining the difference between the movement of the switch knob of the seesaw switch which concerns on a prior art example, and the movement of the switch knob of the seesaw switch which concerns on an Example when a switch knob is pressed down. (A) is a side view of a seesaw switch according to a conventional example, and is a cross-sectional view taken along line AA of FIG. FIG. 2B is a side view of the seesaw switch according to the embodiment, and is a cross-sectional view taken along the line BB in FIG. It is the side view which looked at the switch knob of the seesaw switch which concerns on an Example from the one side of the longitudinal direction, and is CC sectional drawing of FIG. It is a figure showing a mode that the to-be-guided flange part of a switch knob was guided by a pair of guide flange part of a switch panel.

Explanation of symbols

12 Switch panel 12a Switch opening (opening)
12d Bearing part 12e Elongated hole 12f Guide flange part (guide part)
13 Switch knob 13d Rotating shaft 13e Lever part (pressing bar)
13f Guided flange (guided part)
14A tact switch (push switch)
A, B Press part (operation part)

Claims (2)

A pair of bearings provided on both sides of the opening of the switch panel;
A switch knob having a pair of operation portions that are rotated in opposite directions around a rotation axis supported by the pair of bearing portions;
A push bar provided in each of the operation sections;
Push switches provided corresponding to the respective push rods;
A seesaw switch structure comprising:
A seesaw switch structure, wherein a long hole extending in a pressing direction is formed in the bearing portion, and the rotating shaft is slidably mounted in the long hole and supported by the bearing portion. The switch panel is provided with a guide portion extending in the pressing direction, and the switch knob is provided with a guided portion extending in the pressing direction, and the switch knob prevents the switch knob from collapsing by cooperation of the guide portion and the guided portion. The seesaw switch structure according to claim 1, wherein:

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