JP2006140096A - Push-button switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make operating load almost uniform regardless of the pressing location. <P>SOLUTION: An energizing force in upward direction is given to an operating body 68 by springs at a plurality of locations, and at the time of pressing of the operating body 68 by pushing a push button 72, the operating body 68 contacts nearly the center of the upper face of an pressing body, and the pressing body is moved downward coping with the upward energizing force. In this case, when the push button 72 is pressed, the fulcrum of rotation to the downward of the operating body 68 is changed corresponding to the pressing locations of the operating body, thereby the distance between the pressed portion of the operating body 68 and the fulcrum becomes almost same regardless of the pressing locations, and the operating load can be made almost uniform regardless of the pressing locations of the operating body 68. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pushbutton switch device in which a switch is disposed to be shifted from the center portion in a switch case toward the end portion, and is applied to an elevator or the like with a light emitting element disposed in the center portion in the switch case, for example. About things.

  2. Description of the Related Art Conventionally, a push button switch device applied for an elevator in which a light emitting element is arranged at a central portion in a switch case is configured as shown in FIG. 15, for example. That is, as shown in FIG. 15, a printed circuit board 3 is disposed on the lower surface side of the switch case 1, and a light emitting diode (hereinafter referred to as LED) 5 is mounted on the upper surface of the printed circuit board 3. A reflector 7 having a reflecting surface that reflects the light of the LED 5 upward is disposed facing the LED 5 and substantially at the center of the switch case 1. For example, a tact switch is disposed on the right side of the reflector 7 of the printed circuit board 3. A built-in switch 9 is mounted.

  Further, an operation body 13 to which the push button 11 is detachably attached is disposed so as to close the upper surface of the switch case 1, and the operation body 13 is integrally pressed by pressing the push button 11, and the pressed operation is performed. By the body 13, the switch piece 9a arranged on the upper surface side of the built-in switch 9 is pushed downward through a flexible rubber 15, so that the built-in switch 9 is turned on.

  At this time, the left end 13 a of the operating body 13 is placed on the stepped portion 17 at the left end of the switch case 1 and is locked to the lower surface of the locking projection 19 at the upper left end of the switch case 1. A hook-shaped portion 13b that is integrally formed by hanging downward is engaged with an engaging portion 21 having an L-shaped cross section at the right end of the switch case 1 from below.

  Then, an urging force is applied upward to the operating body 13 by the elasticity of the rubber 15, and when the operating body 13 is pressed against the urging force by pressing the push button 11, the left end 13 a of the operating body 13 is supported as a fulcrum. As shown in FIG. 15, the hook-shaped portion 13 b at the right end of the operating body 13 rotates downward, the lower surface of the right end portion of the operating body 13 presses the rubber 15, and the switch piece 9 a of the built-in switch 9 is pressed. The built-in switch 9 is turned on.

  By the way, when the pressing of the push button 1 is released, the hooked portion 13b at the right end of the operating body 13 is rotated upward by the elasticity of the rubber 15, and the hooked portion 13b at the right end of the operating body 13 is engaged with the switch case 1 again. The operating body 13 returns to the original state before being pressed by engaging with the portion 21.

  Note that the urging force to the operating body 13 may be applied by an urging means such as a spring other than the rubber 15.

  As another example of such a push button switch device, one end of the push button is brought into contact with the contact member when the push button is pressed, and the other end side of the push button is rotated with the one end serving as a fulcrum to operate the switch. Yes (see, for example, Patent Document 1).

  As another example, a pair of support shafts are provided on the lower surface side of the push button body, spring members folded in two are locked on these support shafts, and the switch is pressed by the folded pieces of the spring members. In this case, there is one in which the push button body can be pushed down by using a part of the folded piece as a fulcrum regardless of which part of the push button body is pressed (for example, see Patent Document 2).

JP 2004-119238 A (paragraph 0012, FIG. 2) JP-A-5-266754 (paragraphs 0022, 0023, 0026, FIGS. 8 and 9)

  However, since these conventional push button switches have only one fulcrum when the push button or the push button body is pressed, the distance from the fulcrum to the push part is large depending on the push part of the push button or the push button body. However, as a result, there is a problem that the difference in operation load between the part far from the fulcrum and the part close to the fulcrum becomes large, giving the operator a sense of incongruity due to the weight of the operation load due to the difference in the pressed part. It was.

  The present invention has been made in view of the above problems, and an object thereof is to make the operation load substantially uniform regardless of the pressing portion of the operating body or the push button.

  In order to solve the above-described problem, the push button switch device according to claim 1 is a push button switch device in which the switch is disposed so as to be shifted from the center portion in the switch case toward the end portion. And a pressing body that is urged upward so as to move up and down and presses the switch when moving downward, and is disposed above the pressing body in the switch case so as to move up and down and does not come off the switch case. In this way, a plurality of engagement points on the peripheral edge engage with the peripheral edge of the switch case, and when pressed, the contact portion at the center of the lower surface comes into contact with the approximate center of the upper surface of the press body, thereby causing the pressing body to be an upward biasing force. An operating body that moves down against the operating body, and when the operating body is pressed, the pressing portion of the operating body rotates downward with the engaging portion corresponding to the pressing portion of the operating body as a fulcrum. That.

  The push button switch device according to claim 2 is characterized in that the pressing body is biased by a biasing body.

  In the push button switch device according to claim 3, the pressing body is formed of an elastic member, and an urging force is applied to the other end side by engaging one end of the pressing body with the switch case. It is characterized by being.

  The push button switch device according to claim 4 is characterized in that the operating body is biased upward.

  The push button switch device according to claim 5 is characterized in that the pressing body is biased by a biasing body, and the operating body is biased upward by another biasing body.

  Further, in the pushbutton switch device according to claim 6, the pressing body is formed of an elastic member, and one end thereof is locked to the switch case so that a biasing force is applied to the other end side, It is biased by a biasing body, and the operation body is biased upward by another biasing body.

  Further, in the push button switch device according to claim 7, in the configuration as in claim 3 or 6, the locking portion at one end of the pressing body, the center of the switch, and the center of the switch case are flat. It is characterized by being arranged on the same line visually.

  The push button switch device according to claim 8 is characterized in that the plurality of engaging portions of the operating body are formed at opposing positions on the periphery of the operating body.

  Further, in the push button switch device according to claim 9, a part of each engagement portion of the operation body is formed on the same side as one end portion of the locked pressing body. It is said.

  The push button switch device according to claim 10 is characterized in that the pressing body and the operating body are formed in a symmetrical shape such as a rectangle or a circle.

  According to the first aspect of the present invention, when the operating body is pressed, the operating body comes into contact with substantially the center of the upper surface of the pressing body, and the pressing body is moved down against the upward biasing force. At this time, when the operating body is pressed, the pressing portion of the operating body rotates downward with the engaging portion corresponding to the pressing portion of the operating body as a fulcrum.

  Accordingly, since the fulcrum is switched according to the pressed part of the operating body, the distance between the pressed part and the fulcrum is almost the same regardless of the pressed part of the operating body, and the fulcrum is fixed to one as in the prior art. Compared with the case where it has, the operation load can be made substantially uniform irrespective of the pressing part of the operation body.

  At this time, as described in claim 2, when the pressing body is urged by the urging body, the operation load can be adjusted by the upward urging of the urging body.

  Further, as described in claim 3, since the pressing body itself is formed of an elastic member, the number of parts can be reduced as compared with the case where the pressing body is biased as described in claim 2. Can be constructed at low cost.

  According to the fourth aspect of the present invention, since the operating body is biased upward, it is possible to reduce the variation in the load on the pressed portion of the operating body.

  According to the invention described in claim 5, the operation load can be adjusted by urging the pressing body with the urging body, and the operation body can be urged with the other urging body. The variation in the load on the pressing part can be reduced.

  According to the invention described in claim 6, since the pressing body itself is formed by the elastic member and is urged by the urging body, the operation load can be adjusted. On the other hand, since the operating body is urged by another urging body, it is possible to reduce variation in the load on the pressed portion of the operating body.

  According to the seventh aspect of the present invention, since the locking part at one end of the pressing body, the center of the switch, and the center of the switch case are arranged in the same row in plan view, the pressing body is pressed by the operation body. When the operating body comes into contact with the substantially central portion and the pressing body is pressed, the moment when the switch is pressed by the pressing body is almost constant regardless of the operation part of the operating body, and the operation load is uniform. be able to.

  According to the eighth aspect of the present invention, since the plurality of engaging portions of the operating body are formed at opposing positions on the periphery of the operating body, the distance between the pressing portion and the fulcrum of the operating body is determined as the pressing portion. Can be made substantially the same regardless of whether the operation load is uniform.

  According to the ninth aspect of the present invention, a part of each engaging portion of the operating body is formed on the same side as one end of the locked pressing body, and the rest of each engaging portion of the operating body is formed. Since it is formed on the opposite side, the distance between the pressing part and the fulcrum of the operating body can be made substantially the same regardless of the pressing part, and the uniformity of the operation load can be ensured.

  According to the invention described in claim 10, since the pressing body and the operating body are formed in a symmetrical shape such as a rectangle or a circle, the uniformity of the distance between the pressing portion of the operating body and the fulcrum is easily ensured. This is useful for ensuring the uniformity of the operation load.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. However, FIG. 1 is an external perspective view, FIG. 2 is a plan view, FIG. 3 is a front view, FIG. 4 is a cut plan view, FIG. 5 is a perspective view seen from the bottom side, and FIG. 7 is a cut front view taken along the line YY in FIG. 2, FIG. 8 is a cut front view taken along the line ZZ in FIG. 2, and FIG. 9 is an exploded perspective view seen obliquely from above. 10 is an exploded perspective view as seen obliquely from below.

<Configuration>
The push button switch device in the present embodiment is configured as shown in FIGS. That is, a resin switch case 50 including a flat plate 50a having a substantially rectangular shape in plan view and an upright plate 50b erected along the periphery of the flat plate while avoiding the corners is provided, except for the right front of the switch case 50. Bolts are inserted through insertion holes 52 that are formed through the three corners, and the switch case 50 is fixed at a predetermined mounting position.

  A printed circuit board 54 on which various circuit elements are mounted is disposed inside the switch case 50 surrounded by the standing plate 50b. A light-emitting diode (hereinafter referred to as an LED), which is a light-emitting element, is mounted almost at the center of the printed board 54, and a reflector 56 is fixed to the switch case 50 so as to surround the LED. The emitted light is reflected upward.

  A pair of engagement pieces 56 a integrally formed at the lower end of the left peripheral surface of the reflector 56 and a pair of engagement pieces different in shape from the engagement piece 56 integrally formed at the lower end of the right peripheral surface of the reflector 56. The reflectors 56 are detachably fixed by engaging the engagement bosses integrally formed on the inner upper surface surrounded by the standing plate 50b of the switch case 50 with the pieces 56b.

  In addition, a connector 58 for connection to an external lead wire is mounted at the corner position of the printed circuit board 54 corresponding to the right front corner portion of the switch case 50 in which the insertion hole 52 is not formed, and the right side of the reflector 56 The tact switch 60 is arranged and mounted on the printed circuit board 54, and the switch piece of the tact switch 60 is located on the upper surface thereof. As described above, in the present embodiment, the tact switch 60 is arranged so as to be shifted from the center portion in the switch case 50 to the right end side.

  Further, a pressing body 62 having a rectangular frame shape made of elastic metal or the like is disposed so as to surround the reflector 56, and a pair of extending pieces 62a extend obliquely downward at the left end portion of the pressing body 62. A locking claw 62b is formed at the tip of the extension piece 62a, and a pair of locking projections 50c are formed on the standing plate 50b on the left side of the switch case 50. In a state where the lower surface of 62b is in contact with the upper surface of the switch case 50, both the locking claws 62b are inserted into the lower side of the both locking projections 50c, so that both the locking claws 62b can be attached to and detached from the switch case 50. The right end portion of the pressing body 62 is disposed in the switch case 50 so as to be movable up and down with the locking portions of both the locking claws 62b as fulcrums.

  At this time, the right end portion of the pressing body 62 bent slightly upward is biased upward by a biasing force of a spring 66 as a biasing body, which will be described in detail later, and the pressing body 62 resists this biasing force. When the right end of the tactile switch 60 is pushed down, a protrusion that protrudes downward from the right end of the pressing body 62 depresses the switch piece of the tact switch 60 via a rubber 64 having a rectangular shape in plan view. The tact switch 60 is turned on.

  By the way, a columnar boss is integrally formed on the upper surface of the switch case 50 located below the center of the left end portion of the pressing body 62, and a spring 66 is sheathed on the boss so that the left end portion of the pressing body 62 and the switch A spring 66 is inserted between the case 50 and the urging force of the pressing body 62 is adjusted by the spring 66.

  In addition, the intermediate part of both the locking claws 62b of the locked pressing body 62, the center of the tact switch 60, and the center of the switch case 50 are arranged in substantially the same row in plan view. Thus, when the pressing body 62 is pressed, the moment of the pressing body 62 when the tact switch 60 is pressed can be made substantially the same regardless of the pressing portion of the operating body described later.

  A resin operating body 68 having a shape that can be fitted inside the switch case 50 surrounded by the standing plate 50b is disposed inside the switch case 50. A square shape is formed at the center of the operating body 68. The through hole 68a is formed in a transparent manner, and a short square tube portion 68b is integrally formed with the operation body 68 along the periphery of the through hole 68a.

  Further, a pair of outwardly engaging claws 68 c are formed on the lower surfaces of the left end and the right end of the operating body 68, respectively, and each of these engaging claws 68 c faces inwardly at the upper ends of the left and right standing plates 50 b of the switch case 50. The engaging projection 50d is formed so as to be detachably engaged with the engaging projection 50d from below, and the engaging claw 68c is engaged with the engaging projection 50d so that the operating body 68 does not come off. It is arranged freely.

  In addition, cylindrical bosses are integrally formed on the upper surface of the switch case 50 located below the center of the left and right ends of the operating body 68, and springs 70 as other biasing bodies are provided on these bosses. Thus, a spring 70 is inserted between the operating body 68 and the switch case 50, and the operating body 68 is always urged upward by these two springs 70.

  At this time, on the front and rear lower surfaces of the operation body 68, contact portions that respectively contact the contact pieces 62c integrally formed at the center of the front and rear end portions of the pressing body 62 are formed. When the body 68 is pressed, both contact portions of the operating body 68 are in contact with both contact pieces 62c of the pressing body 62 to press down the pressing body 62.

  By the way, a square push button 72 made of a translucent resin or the like in a plan view is detachably mounted so as to cover the outer peripheral surface and the upper surface of the regular square tube portion 68b of the operating body 68. Here, a locking groove 68d is formed at the lower center outside each peripheral wall of the square tube portion 68b, and the lower center inside each peripheral wall of the push button 72 has elasticity capable of engaging with each latching groove 68d. The locking projections 72a are integrally formed, the locking projections 72a are detachably locked in the locking grooves 68d, and the push buttons 72 are detachably attached to the operation body 68.

  In addition, since the operating body 68 is pressed integrally with the push button 72 by the pressing operation of the push button 72, in the following description of the operation and the like, the pressed portion of the push button 72 is referred to as the pressed portion of the operating body 68. It will be explained in the same way.

<Center press action>
When the push button switch device having the above configuration is applied to, for example, an elevator switch, and the user presses the push button 72, the operating body 68 is pressed against both springs 70 and the pressing body 62 is moved. The tact switch 60 is turned on to turn on the LED, and the control circuit (not shown) keeps the LED lighting state until a predetermined condition is satisfied (e.g., opening of the elevator door). It is visible to the user.

  Now, when the portion B which is the center of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied to the substantially central portion of the operating body 68. At this time, the operating body 68 does not use any of the engagement portions of the engaging claws 68c with the engaging projections 50d as fulcrums, and the operating body 68 translates downward against both springs 70, The pressing force applied to the push button 72 is directly transmitted to both contact portions located near the center of the operation body 68. At this time, the reaction force received by the operating body 68 via both contact portions when pressed is the resultant force of the restoring forces of the two springs 70, the pressing body 62, and the spring 66, and this corresponds to the operating load.

  As a result, both contact portions of the operating body 68 are in contact with both contact pieces 62c of the pressing body 62 to press the pressing body 62, and the right end portion of the pressing body 62 holds the locking portion of the both locking claws 62b. As a fulcrum, the tact switch 60 is turned on by pressing the switch piece of the tact switch 60 via the rubber 64.

<End push operation>
Next, when the A portion on the left side of the center B portion of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the left end portion of the operation body 68, so that the operation body 68 faces upward. The left spring 70 of the two springs 70 biased to the right is compressed more strongly than the right side. As a result, the left end portion of the operating body 68 is engaged with the right engagement claws 68c and the engagement protrusions 50d. It will move downward against both springs 70 with P1 and P2 as fulcrums.

  Then, due to the downward movement of the left end portion of the operating body 68, both contact portions of the operating body 68 come into contact with both contact pieces 62c of the pressing body 62, and a pressing force is transmitted to the pressing body 62, and the pressing body 62 is pressed down. Then, the right end portion of the pressing body 62 moves downward with the locking portion of both locking claws 62b as a fulcrum, whereby the switch piece of the tact switch 60 is pressed through the rubber 64 and the tact switch 60 is turned on.

  On the other hand, when the C portion on the right side of the central B portion of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the right end portion of the operation body 68, so that the operation body 68 faces upward. Of the springs 70 to be urged, the right spring 70 is compressed more strongly than the left side. As a result, the right end portion of the operating body 68 is engaged with the engagement portion P3 between the left engagement claws 68c and the engagement protrusions 50d. , P4 is moved downward against both springs 70 as a fulcrum.

  Then, due to the downward movement of the right end portion of the operating body 68, both contact portions of the operating body 68 come into contact with both contact pieces 62c of the pressing body 62, and a pressing force is transmitted to the pressing body 62, and the pressing body 62 is pressed down. Then, the right end portion of the pressing body 62 moves downward with the locking portion of both locking claws 62b as a fulcrum, whereby the switch piece of the tact switch 60 is pressed through the rubber 64 and the tact switch 60 is turned on.

  At this time, when the operation loads when the A portion and the C portion of the push button 72 are respectively pressed are compared, the distance from the A portion that is the pressing portion to the fulcrums P1 and P2, and the C portion that is the pressing portion to the fulcrum P3. The distance to P4 is almost the same, and the reaction force received by the operating body 68 when pressing the A portion and the C portion of the push button 72 is almost the same, so the A portion and the C portion of the push button 72 are There is almost no difference in the operation load when each is pressed.

  Further, even if the operation loads when the B portion and A (or C) portion of the push button 72 are pressed are compared, the operating body when the B portion and A (or C) portion of the push button 72 are pressed respectively. Since there is no great difference in the reaction force received by 68, the difference in the operation load when pressing the B part and A (or C) part of the push button 72 is small, as in the conventional case, when the push button is operated. There is only one fulcrum, and it does not become as large as the difference in operation load between when the part far from the fulcrum is pressed and when the part near it is pressed. Therefore, the operation load when the B portion and the A (or C) portion of the push button 72 are respectively pressed does not become so large that the user feels uncomfortable, and is almost the same operation load.

  By the way, when the E portion on the rear side of the center B portion of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the rear end portion of the operation body 68. The two springs 70 that are biased upward are compressed in the same manner, but because of the pressing toward the rear end of the operating body 68, the front side of the engagement portions between the engagement claws 68c and the engagement protrusions 50d, that is, With the above-described P2 and P4 as fulcrums, the rear end portion of the operating body 68 moves downward against both springs 70.

  Then, by the downward movement of the rear end portion of the operation body 68, at least the rear contact portion of the operation body 68 contacts the contact piece 62c of the pressing body 62, or both contact portions are both contact pieces 62c. The pressing force is transmitted to the pressing body 62 in contact with each of them, whereby the pressing body 62 is pressed down, the right end portion of the pressing body 62 moves downward with the locking portions of both locking claws 62b as fulcrums, and the rubber 64 is moved. The tact switch 60 is turned on by pressing the switch piece of the tact switch 60.

  In addition, when the front H portion of the center B portion of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the front end portion of the operation body 68, but the operation body 68 is directed upward. The two springs 70 to be urged are compressed in the same manner, but because of the pressure close to the front end of the operating body 68, the rear side of the engaging portion between each engaging claw 68c and each engaging protrusion 50d, that is, the above-described portion. The front end portion of the operating body 68 moves downward against both springs 70 using P1 and P3 as fulcrums.

  Then, due to the downward movement of the front end portion of the operation body 68, at least the front contact portion of the operation body 68 contacts the contact piece 62c of the pressing body 62, or both contact portions are brought into contact with the both contact pieces 62c. The pressing force is transmitted to the pressing body 62 by contact, whereby the pressing body 62 is pressed down, and the right end portion of the pressing body 62 moves downward with the locking portions of both locking claws 62b as fulcrums. When the switch piece of the tact switch 60 is pressed, the tact switch 60 is turned on.

  At this time, when the operation loads when the E portion and the H portion of the push button 72 are respectively pressed are compared, the distance from the pressing portion E portion to the fulcrums P2, P4 and the pressing portion H portion to the fulcrum P1, The distance to P3 is almost the same, and the reaction force received by the operating body 68 when the E portion and H portion of the push button 72 are pressed is almost the same, so the E portion and H portion of the push button 72 are There is almost no difference in the operation load when each is pressed.

  Further, even if the operation loads when the B portion and E (or H) portion of the push button 72 are pressed are compared, the operating body when the B portion and E (or H) portion of the push button 72 are pressed respectively. Since there is no great difference in the reaction force received by 68, the difference in the operation load when pressing the B portion and the E (or H) portion of the push button 72 is small. There is only one fulcrum, and it does not become as large as the difference in operation load between when the part far from the fulcrum is pressed and when the part near it is pressed. Therefore, the operation load when the B portion and the E (or H) portion of the push button 72 are respectively pressed does not become so large that the user feels uncomfortable, and the operation loads are almost the same.

<Corner push operation>
Further, when the D portion on the left rear side of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the left rear end of the operation body 68, so that the operation body 68 is directed upward. Of the two springs 70 to be urged, the left spring 70 is compressed more strongly than the right side, and the operating body 68 has the engaging point P2 between the two engaging claws 68c on the right front side and the corresponding engaging projection 50d as a fulcrum. Thus, the left end portion of the left lower end portion moves downward against both springs 70.

  Further, when the F portion on the right rear side of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the right rear end portion of the operation body 68, so that the operation body 68 is directed upward. Of the two springs 70 to be urged, the right spring 70 is compressed more strongly than the left side, and the operating body 68 has the engaging point P4 between the both front left engaging claws 68c and the corresponding engaging projection 50d as a fulcrum. The right end portion of the right lower end portion moves downward against both springs 70.

  On the other hand, when the G portion on the left front side of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the left front end portion of the operation body 68, so that the operation body 68 is biased upward. The left spring 70 of the two springs 70 is compressed more strongly than the right side, and the operating body 68 of the operating body 68 is supported with the engagement point P1 between the two engagement claws 68c on the right rear side and the corresponding engagement projection 50d as a fulcrum. The left front end moves downward against both springs 70, mainly the left front end.

  Further, when the I portion on the right front side of the push button 72 shown in FIG. 2 is pressed, the pressing force to the push button 72 is applied closer to the right front end portion of the operation body 68, so that the operation body 68 is biased upward. Of the two springs 70, the right-side spring 70 is compressed more strongly than the left side, and the engaging portion P3 between the left rear engaging claws 68c and the corresponding engaging projection 50d is a fulcrum. The right front end moves downward against both springs 70, mainly the right front end.

  Then, due to the downward movement of the left end portion of the operating body 68, both contact portions of the operating body 68 come into contact with the both contact pieces 62c, and the pressing force is transmitted to the pressing body 62, whereby the pressing body 62 is pressed down. The right end portion of the pressing body 62 moves downward with the locking portion of both locking claws 62b as a fulcrum, and the switch piece of the tact switch 60 is pressed via the rubber 64 to turn on the tact switch 60.

  At this time, when the operation loads when pressing the D part and the F part of the push button 72 are compared, the distance from the D part that is the pressing part to the fulcrum P2 and the distance from the F part that is the pressing part to the fulcrum P4. And the reaction force received by the operating body 68 when the D portion and F portion of the push button 72 are respectively pressed is almost the same. Therefore, each of the D portion and F portion of the push button 72 is shown. There is almost no difference in operating load when pressed.

  Further, even when the operation loads when the B portion and D (or F) portion of the push button 72 are pressed are compared, the operating body when the B portion and D (or F) portion of the push button 72 are pressed respectively. Since there is no great difference in the reaction force received by 68, the difference in the operation load when pressing the B portion and D (or F) portion of the push button 72 is small, as in the conventional case, when the push button is operated. There is only one fulcrum, and it does not become as large as the difference in operation load when a part far from the fulcrum is pressed and when a part close to the fulcrum is pressed. Therefore, the operation load when pressing the B portion and the D (or F) portion of the push button 72 does not become so large that the user feels uncomfortable, and the operation loads are almost the same.

  The operation load when the G portion and the I portion of the push button 72 are respectively pressed is almost the same for the same reason as when the D portion and the F portion of the push button 72 are respectively pressed. Regarding the difference in operation load when pressing the portion and the G (or I) portion, the user feels uncomfortable for the same reason as when pressing the B portion and the D (or F) portion of the push button 72, respectively. It does not become so large as to be remembered, and the operation load is almost the same.

  Therefore, according to the above-described embodiment, particularly when the end or corner other than the center of the push button 72 is pressed, the pressing portion of the push button 72, that is, the pressing portion of the operating body 68, and the operating body 68 corresponding thereto. The distance from the fulcrum during the downward movement is substantially the same, and the operation load can be made substantially uniform regardless of the pressed portion of the operation body 68.

  Furthermore, the fulcrum points P1, P2 are arranged on the right side, the fulcrum points P3, P4 are arranged on the left side, the right spring 70 is arranged between the fulcrum points P1, P2, and the left spring 70 is arranged between the fulcrum points P1, P2. The operating body 68 can be rotated downward (moved downward) at an appropriate fulcrum according to the pressing portion of the operating body 68 (the pressing portion of the push button 72), and the uniformity of the operating load can be ensured.

  In addition, since the locking portions of the locking claws 62b of the pressing body 62, the center of the tact switch 60, and the center of the switch case 50 are arranged in the same row in plan view, the pressing body 62 is pressed by the operation body 68. When the operating body 68 comes into contact with substantially the center of the operating body 68 and the pressing body 62 is pressed down, the tact switch 60 is pressed by the pressing body 62 regardless of the pressing site of the operating body 68 (the pressing site of the push button 72). The moment of the pressing body 62 becomes substantially the same, and the uniformity of the operation load can be ensured.

(Modification)
Next, FIGS. 11 to 14 are modifications of the above-described embodiment, FIG. 11 is an external perspective view, FIG. 12 is a perspective view seen from the bottom side, and FIG. 13 is an exploded perspective view seen obliquely from above. FIG. 14 is an exploded perspective view seen obliquely from below. However, in FIGS. 11 to 14, the same reference numerals as those in FIGS. 1 to 10 denote the same or corresponding elements.

  The basic structure of the push button switch device in this modification is almost the same as that of the above-described embodiment, the contact piece 62c of the pressing body 62 is deleted, and the contact portions on the lower surfaces of the operating body 68 are arranged on the lower surface of the pressing body 62. The difference is that the pressing body 62 is pressed down by directly contacting the center of the front and rear end portions.

  If it carries out like this, since the contact | abutting piece 62c of the press body 62 is deleted, since the press body 62 can be reduced in size, size reduction of the whole switch apparatus can be achieved.

  The present invention is not limited to the above-described embodiment, and various modifications other than those described above can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the switch case 50, the pressing body 62, and the operation body 68 are illustrated as rectangular in plan view. However, these may be circular or other symmetrical shapes, and in this case, An effect equivalent to that of the embodiment can be obtained.

  In the above-described embodiment, the push button 72 is detachably attached to the operation body 68. However, the operation body 68 may be configured to be integrated with the push button 72.

  Furthermore, it is not always necessary to incorporate a light emitting element such as an LED or a lamp as the push button switch device. The switch disposed in the switch case 50 is not limited to the tact switch 60 described above.

  In the above-described embodiment, the spring 66 for adjusting the urging force of the pressing body 62 is provided. However, depending on the urging force, the spring 66 may not be provided and may be deleted.

  By the way, the push button switch device of the present invention is not limited to being applied to an elevator as described in the above-described embodiments, and includes a start switch of a so-called copying machine, in particular, a light emitting element and whether or not a switch is operated. The present invention can be applied to various switches for electronic devices that provide notification according to the light emission state.

It is an external appearance perspective view of one Embodiment of this invention. It is a top view of one embodiment. It is a front view of one embodiment. It is a cutting top view showing an internal configuration of one embodiment. It is the perspective view seen from the bottom face side of one embodiment. FIG. 3 is a cut front view taken along line XX in FIG. 2. It is the cutting | disconnection front view in the YY line | wire in FIG. It is the cutting | disconnection front view in the ZZ line | wire in FIG. It is the disassembled perspective view seen from diagonally upward of one Embodiment. It is the disassembled perspective view seen from diagonally downward of one Embodiment. It is an external appearance perspective view of a modification. It is the perspective view seen from the bottom face side of a modification. It is the disassembled perspective view seen from diagonally upward of the modification. It is the disassembled perspective view seen from diagonally downward of the modification. It is sectional drawing of a prior art example.

Explanation of symbols

50 …… Switch case 60 …… Tact switch 62 …… Pressing body 66 …… Spring (biasing body)
68 …… Operating body 70 …… Spring (other biasing body)
72 …… Push button A, B, C, D, E, F, G, H, I …… Pressing part P1, P2, P3, P4 …… Supporting point

Claims (10)

In the pushbutton switch device in which the switch is arranged shifted from the center part in the switch case to the end side,
A pressing body that is urged upward in the switch case so as to freely move up and down and presses the switch when it is moved down;
A plurality of engaging portions on the periphery engage with the periphery of the switch case so as not to be disengaged from the switch case, and are arranged above the pressing body in the switch case so as to be movable up and down. An abutting portion that abuts the substantially upper surface of the pressing body and moves the pressing body down against an upward biasing force;
When the operating body is pressed, the pressing portion of the operating body rotates downward with the engaging portion corresponding to the pressing portion of the operating body as a fulcrum.   The push button switch device according to claim 1, wherein the pressing body is biased by a biasing body.   The push button according to claim 1, wherein the pressing body is formed of an elastic member, and an urging force is applied to the other end side by engaging one end of the pressing body with the switch case. Switch device.   The push button switch device according to claim 1, wherein the operating body is biased upward.   The push button switch device according to claim 1, wherein the pressing body is biased by a biasing body, and the operating body is biased upward by another biasing body.   The pressing body is formed of an elastic member, and one end of the pressing body is locked to the switch case, so that an urging force is applied to the other end side, and the urging body is urged. The pushbutton switch device according to claim 1, wherein the pushbutton switch device is biased upward by a biasing body.   The push button switch device according to claim 3 or 6, wherein a locking portion at one end of the pressing body, the center of the switch, and the center of the switch case are arranged in the same row in a plan view.   The push button switch device according to any one of claims 1 to 7, wherein a plurality of the engaging portions of the operating body are formed at positions facing each other on the periphery of the operating body.   A part of the engaging portions of the operating body is formed on the same side as one end of the locked pressing body, and the rest of the engaging portions of the operating body are formed on the opposite side. The pushbutton switch device according to claim 8, wherein the pushbutton switch device is provided.   The push button switch device according to any one of claims 1 to 9, wherein the pressing body and the operation body are formed in a substantially symmetrical shape such as a rectangle or a circle.

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