JP4720931B2 - Seesaw button structure - Google Patents

Description

  The present invention relates to a seesaw button structure used for a seesaw switch or the like.

  Conventionally, as a seesaw button structure, for example, a structure disclosed in Patent Document 1 is known. In this seesaw button, a button whose both ends in a specific direction are pressed is used, and the central portion of the specific direction is connected to the support member via a pin whose axial direction is substantially orthogonal to the longitudinal direction of the button and the pressing operation direction. It is supported. Then, by pressing one of both ends of the button, the button swings around the pin as a fulcrum, and the end of the pressed operation is displaced in the pressing operation direction. .

JP-A-5-411141

  In this seesaw button, in order to improve the aesthetic appearance of the seesaw button, the button is embedded in the operation panel and the button periphery is surrounded by a frame, and the surface of the button and the surface of the operation panel are on substantially the same plane. It is done to be located.

  However, in the structure that supports the central portion in the specific direction of the button, if one of the two end portions of the button is pressed, the opposite end protrudes to the near side, which impairs the aesthetic appearance.

  Also, in this structure, when the button is pressed, both ends of the button draw an arc-shaped locus centered on the fulcrum, so if the fulcrum is located on the back side beyond the button thickness from the button surface, When the surface side portion of the operated end portion is located within the thickness of the button, the surface side portion of the pressed end portion and the end opposite to the pressed end portion The back side portion of the part moves away from the fulcrum in the specific direction. For this reason, the gap between the pressed end and the outer frame is reduced, so that the gap between the button periphery and the outer frame is somewhat fixed in order to prevent interference between the end and the frame. It was necessary to keep it, and it was a factor that the beauty was inferior.

  In view of such circumstances, the present invention does not project the opposite end of the button even when one of the two ends of the button is pressed, and between the button periphery and the frame surrounding it. An object of the present invention is to provide a seesaw button structure capable of reducing the gap between the two.

  In the first aspect of the invention, a button that is selectively pressed at both ends in a specific direction is supported by a support member, and the button is pressed by pressing one of both ends of the button. In the seesaw button structure in which the end portion of the button is displaced in the pressing operation direction, the button has a protruding portion that protrudes from the back surface of each end portion, and each protruding portion has an end portion provided with the protruding portion. When pressed, the movable portion of the contact portion is pressed through the support column, and is urged in the direction opposite to the pressing operation direction by the urging means provided on the contact portion, Are provided with pins whose axial directions are substantially orthogonal to the specific direction and the pressing operation direction at positions corresponding to the protrusions of the button, and the pins can slide on the protrusions of the button. Long hole to fit The button is provided so as to extend in a direction substantially parallel to the pressing operation direction, and the button is supported by the support member by fitting the pin into the elongated hole. The pin is positioned on one end side of the elongated hole, and when one of the two end portions of the button is pressed, the biasing means is attached to the pin on the opposite side to the pressing side. The button is configured to swing against the force.

  According to a second aspect of the present invention, in the seesaw button structure according to the first aspect, the two long holes indicate the positions of the pins fitted in the opposite long holes when the button is in a non-operating state. It is characterized by a circular arc shape at the center.

  According to the first aspect of the present invention, the projecting portions projecting from the back surface are provided at both end portions in the specific direction of the button, and the pin is provided at each of the positions corresponding to the projecting portions on the support member. The button is supported by the support member through the pin by fitting the pin into the elongated hole provided in each of the protrusions, and when one of the both ends of the button is pressed, the button is pressed. Since the protruding part on the side where the button is swung and pressed by using the pin on the opposite side as the fulcrum is configured to press the contact part via the support, the side opposite to the side where the button is pressed The end of the stub does not protrude greatly toward the front side.

  In addition, since the button swings with a pin fitted in a long hole provided in the protruding portion on the side opposite to the pressing operation side as a fulcrum, the pressing operation is performed compared to the conventional structure supporting the central portion of the button. It is possible to increase the rocking radius of the one end, and to reduce the angle at which the button rocks. Therefore, when the button is pressed, the movement distance of the end of the pressed direction in the specific direction becomes smaller and the swinging locus of the button approaches a straight line parallel to the pressing operation direction. Even when embedded in a panel or the like, the gap between the button periphery and the frame surrounding the button can be reduced, and the seesaw button can be improved in appearance.

  According to the invention which concerns on Claim 2, both the said long holes which both said pins each fit are centered on the position of the pin fitted to the other long hole when the button is in a non-operation state. Therefore, the clearance between the outer peripheral surface of the pin and the inner peripheral surface of the long hole can be made as small as possible. For example, when the shape of the long hole is not a circular arc but a straight line as described above, it is necessary to slightly increase the clearance in order to enable the button to swing, and there is play in the button by the clearance. However, if the shape of the long hole is an arc, the button can be swung even if the clearance is made as small as possible, and play of the button can be suppressed. Therefore, it is possible to improve the aesthetics by keeping the gaps around the button periphery substantially uniform.

It is a front view of the operation panel in which the seesaw button which employ | adopted the seesaw button structure of this invention was arrange | positioned. It is the II sectional view taken on the line in FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a figure which shows the button which concerns on this invention, (a) is a front view, (b) is a right view, (c) is a rear view, (d) is a bottom view. It is a figure which shows the supporting member which concerns on this invention, (a) is a front view, (b) is the II-II sectional view taken on the line in (a). It is sectional drawing which shows the relationship between a button and a supporting member when it sees from the III arrow view in FIG. It is sectional drawing which shows the relationship between the button and support member when it sees from IV arrow in FIG. It is the II sectional view taken on the line in FIG. 1 when a button is pressed.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  1 and 2 show an operation panel 1 provided with a seesaw button 10 employing the seesaw button structure of the present invention. The operation panel 1 may be installed in any posture, but in the present embodiment, for convenience of explanation, the operation panel 1 is described as being installed in an upright posture.

  The operation panel 1 includes a panel member 30 constituting the main body of the operation panel 1, an operation unit 2 provided on the panel member 30, and a printed circuit board 50 disposed on the back side of the panel member 30. ing. A switch circuit is formed on the printed circuit board 50, and the switch circuit is opened and closed by the operation of the operation unit 2.

  The operation unit 2 has an overall circular shape in the illustrated example, a circular button 3 positioned at the center, an arcuate button 4 positioned above and below the button 3, and positions on the left and right of the button 3. And an arcuate button 20 to be formed.

  These buttons 3, 4, and 20 are disposed in a recess 32 provided at a predetermined position of the panel member 30. The recess 32 is recessed in a circular shape from the panel surface 30 a of the panel member 30. When the buttons 3, 4, and 20 are fitted into the recess 32, the surfaces of the buttons 3, 4, and 20 are The buttons 3, 4, and 20 are supported by the panel member 30 in a state of being positioned on substantially the same plane as the panel surface 30 a.

  A ring-shaped frame 5 that borders the corner portion is disposed at the corner portion sandwiched between the inner peripheral surface of the concave portion 32 and the panel surface 30a so as to improve the appearance of the operation portion 2. It has become. In this embodiment, the buttons 3, 4, 20 and the panel member 30 are all formed of a synthetic resin such as ABS.

  Of the buttons 3, 4, and 20, the circular button 3 and the arc-shaped button 4 positioned above and below the button 3 constitute simple push buttons, and the arc-shaped buttons positioned on the left and right of the button 3. Reference numerals 20 each constitute the seesaw button 10.

  In this embodiment, a pair of upper and lower contact portions 52 are provided on the printed circuit board 50 corresponding to each button 20, and the upper end portion or the lower end portion of the button 20 is alternatively pressed. As a result, the pressing operation force is transmitted to any one of the contact portions 52 via the support column 40 held by the panel member 30, thereby switching the contact portion 52.

  Each of the contact parts 52 has a movable part 52a movable in the pressing operation direction. A movable contact is provided on the back surface of the movable part 52a, and a fixed contact is provided on the printed circuit board 50. Further, the contact portion 52 incorporates an urging means for urging the movable portion 52a in a direction opposite to the pressing operation direction (that is, holding both the contacts apart).

On the other hand, a peripheral wall 22 as shown in FIG. And these protrusion parts 25
And the movable part 52a of the contact point part 52, the support column 40 is interposed, and when the upper end part or the lower end part of the button 20 is pressed, the pressing operation force is applied to the protruding part 25 and This is transmitted to the movable portion 52a of the contact portion 52 through the support column 40 that contacts this, and the contact of the contact portion 52 is closed against the urging force of the urging means of the contact portion 52. ing.

  In other words, the two protrusions 25 of the button 20 are in a state of receiving an equal reaction force from the urging means incorporated in each contact portion 52 via the support column 40, and by the reaction force, In a non-operating state in which the button 20 is not being operated, the button 20 is urged evenly in the up and down direction (right direction in FIG. 2) and held in the neutral position as shown in FIG. It has come to be.

  As the urging means, a spring or the like can be adopted. However, the configuration of the contact portion 52 is such that the fixed contact is covered with an elastic body and a movable contact is provided on the inner surface of the elastic body. In this case, the elastic body can be used as the urging means.

  Next, a specific structure for supporting the button 20 and the column 40 on the panel member 30 side will be described.

  The bottom wall 32a of the recess 32 of the panel member 30 is formed with a cylindrical portion 35 having a shape penetrating the bottom wall 32a in the thickness direction, and the column 40 is disposed in the axial direction in the cylindrical portion 35. (That is, it is slidably held in the pressing operation direction). A pair of left and right clamping parts 36 are extended from the front side end part (end part near the button 20) of the cylindrical part 35, and these clamping parts 36 connect the protruding part 25 on the button 20 side. By respectively pinching, the movement of the button 20 in the left-right direction with respect to the panel member 30 is restricted (see FIG. 6).

  Pins 36 a facing each other are provided on the inner side surface of each of the holding portions 36. The axial center direction of these pins 36a is directed in a direction (right and left direction in FIG. 1) substantially orthogonal to the pressing operation direction. On the other hand, each of the protrusions 25 of the button 20 is provided with long holes 25a penetrating the protrusions 25 in the left-right direction (the depth direction in FIG. 2), and the pins 36a are inserted into the long holes 25a. Is inserted.

  Here, the shape of the long holes 25a is generally a shape extending in a direction substantially parallel to the pressing operation direction. In this embodiment, when the button 20 is in the non-operating state, that is, when each pin 36a is at the back end of each long hole 25a (end near the printed circuit board 50), The shape of both the long holes 25a is set so that the long hole 25a has an arc shape centered on the pin 36a fitted in the other long hole 25a.

  When one of the upper and lower end portions of the button 20 is pressed, the button 20 swings against the urging force of the urging means with the pin 36a opposite to the pressing side as a fulcrum, and the pin 36a The end portion of the long hole 25a that is pressed within a distance of sliding in the long hole 25a is displaced.

  Furthermore, in this embodiment, when the upper and lower ends of the button 20 are pressed simultaneously or when the center of both ends is pressed, the button 20 does not swing and the entire button 20 is in the direction of the pressing operation. There is provided an erroneous operation preventing means 60 for preventing parallel movement.

  The erroneous operation preventing means 60 includes a guide portion 62 provided on the panel member 30 and a guided portion 64 provided on the button 20 and guided by the guide portion 62.

  Specifically, on the button 20 side, as shown in FIG. 4, extending portions 23 are extended from the left and right side portions of the peripheral wall 22 to the printed circuit board 50 side (the front side in FIG. 4C). The guided portions 64 are provided on the inner side surfaces of the extending portions 23, respectively.

  These guided portions 64 are formed at positions corresponding to substantially the center of the upper and lower end portions of the button 20. Each guided portion 64 has a substantially columnar shape protruding so as to face each other, and its outer peripheral surface slightly protrudes toward the printed circuit board 50 to form a protruding end 64a (see FIG. 3).

  On the other hand, as shown in FIG. 5, the bottom wall 32 a of the recess 32 of the panel member 30 is formed with a cylindrical portion 33 located on the back side of the central portion of the button 20. Rectangular through holes 34 penetrating the bottom wall 32a are provided at positions adjacent to the left and right, respectively, and the extending portion 23 of the button 20 is provided on the back side of the bottom wall 32a (see FIG. 5). In (b), it can project to the left side).

  A pair of tongue pieces 37 constituting a wall surface continuous with the inner peripheral surface in the left-right direction of the cylindrical portion 33 protrude from the back surface of the bottom wall 32a, and a through-hole in the thickness direction is formed in the tongue piece 37. The guide part 62 is provided by forming 37a.

  The through-hole 37a has a substantially heart shape opposite to the direction in which the tongue piece 37 protrudes. As shown in FIG. 3, the inner surface of the through-hole 37a faces toward the button 20 side. A portion protruding in the direction is a guide portion 62 for guiding the guided portion 64 described above. The guide portion 62 has a guide surface 62a that spreads left and right with a vertex 62b of the protruding portion as a boundary.

  Then, as shown in FIG. 7, the protruding portion 23 of the button 20 protrudes from the through hole 34 of the panel member 30 to the back side of the bottom wall 32 a, and the guided portion 64 is formed in the tongue piece 37. It is inserted in 37a.

  The shapes of the guide part 62 and the guided part 64 are set so as to satisfy the following conditions.

  a) When the button 20 is in the non-operating state, as shown in FIG. 3, the apex 62b of the guide portion 62 faces the protruding end 64a of the guided portion 64, and from this state, the entire button 20 is pressed in the direction of the pressing operation. When the parallel movement is attempted, the protruding end 64a of the guided portion 64 and the apex 62b of the guide portion 62 come into contact with each other, so that the guide portion 62 restricts the movement of the guided portion 64 and prevents the parallel movement. .

  b) When the button 20 performs an operation other than the parallel movement, the protruding end 64a of the guided portion 64 and the apex 62b of the guiding portion 62 are displaced from each other. The button 20 is guided so that it slides on the guide surface 62a of 62, and rock | fluctuates to the opposite side to the direction where the said protrusion end 64a is guided.

  Next, the operation of the seesaw button 10 will be described.

  When one of the upper and lower ends of the button 20 is pressed from the neutral position shown in FIG. 2, the end of the pressed operation is displaced against the urging force of the urging means as shown in FIG. However, since the end portion on the opposite side to the pressed side is urged by the urging means and is displaced by the shape of the long hole 25a, the button 20 is pressed. The pin 36a on the opposite side is swung around the fulcrum.

Note that when pressing the upper and lower ends of the button 20, it is not always necessary to press the end, and it is only necessary to press the portion closer to the center of the upper and lower ends.

  Then, the support column 40 located on the pressing operation side moves with the displacement of the button 20, presses the movable portion 52a of the contact portion 52, and opens and closes the switch circuit formed on the printed circuit board 30. Is called.

  When the pressing operation is released, the movable portion 52 is returned to the original position by the urging means of the contact portion 52, and the support column 40 is moved accordingly and pushes the end portion of the button 20 that has been pressed. The button 20 returns to the original state.

  As described above, in the present embodiment, the pin 36a is provided at each of the positions corresponding to the upper and lower ends of the button 20, and the button 20 is supported by the panel member 30 via both the pins 36a. When one of the two end portions of the button 20 is pressed, the button 20 swings with the pin 36a on the opposite side to the side to be pressed as a fulcrum, so the side opposite to the side on which the button 20 is pressed The end of the stub does not protrude greatly toward the front side.

  In addition, since the button 36a swings with the pin 36a opposite to the pressing operation side as a fulcrum, the swing radius at the end of the pressing operation is increased as compared with the conventional structure supporting the central portion of the button. In addition, the angle at which the button 20 swings can be reduced. Accordingly, when the button 20 is pressed, the movement distance of the end of the pressed operation in the up and down direction is reduced, and the swinging locus of the button 20 approaches a straight line parallel to the pressing operation direction. The gap between the periphery and the frame 5 can be reduced, and the aesthetic appearance of the operation unit 2 including the seesaw button 10 can be improved.

  Since the swing locus of the button 20 approaches a straight line parallel to the pressing operation direction, a load other than the axial direction acting on the column 40 when the button 20 is pressed can be reduced. It is possible to suppress damage to the portion that guides 40 and the column 40.

  Further, both the long holes 25a are formed in an arc shape centered on the position of the pin 36a fitted in the opposite long hole 25a when the button 20 is in a non-operating state. The clearance between the outer peripheral surface and the inner peripheral surface of the long hole 25a can be minimized. For example, when the shape of the long hole 25a is not a circular arc but a straight line as described above, the clearance needs to be slightly increased in order to allow the button 20 to swing. However, if the shape of the long hole 25a is an arc, the button 20 can be swung even if the clearance is minimized, and the play of the button 20 is suppressed. it can. Accordingly, it is possible to improve the aesthetics by keeping the gap around the periphery of the button 20 substantially uniform.

  Furthermore, in this embodiment, since the erroneous operation preventing means 60 is provided, it is possible to reliably prevent the entire button 20 from being translated in the pressing operation direction. For example, the seesaw button 10 is often employed as a button that performs a reciprocal operation, and if the entire button 20 moves in parallel in the pressing operation direction, a conflicting operation signal may be output at the same time. This is effective in preventing erroneous operations.

  Specifically, in this embodiment, the entire structure of the button 20 is reliably prevented from being translated in the pressing operation direction with a simple configuration in which the guide member 62 is provided on the panel member 30 and the guided portion 64 is provided on the button 20. be able to.

  The erroneous operation preventing means 60 is not necessarily configured by the guide portion 62 and the guided portion 64. For example, a bar is provided on the back side of the button 20 at a position corresponding to the approximate center of the upper and lower ends of the button 20. And you may make it regulate the displacement more than the displacement at the time of the button 20 rocking | fluctuating in the said center part.

  Moreover, in the said embodiment, although the form which arrange | positioned the seesaw button 10 in the operation part 2 which consists of a some button was shown, it is not restricted to this form, but also when arrange | positioning the seesaw button 10 single-piece | unit. It is possible to adopt a seesaw button structure.

  Further, the shape of the button 20 does not have to be an arc shape as shown in the above embodiment, and can be a circular shape or a rectangular shape, and the end portion to be selectively pressed is also in the longitudinal direction. It is not limited to the short side direction.

  Note that the peripheral wall 22 of the button 20 and the cylindrical portion 33 of the panel member 30 may be omitted.

  Even when the clearance between the inner peripheral surface of the long hole 25a and the outer peripheral surface of the pin 36a is made extremely small, the button 20 does not swing and the entire button 20 is translated in the pressing operation direction. Can be prevented. In this case, the erroneous operation preventing means 60 can be omitted.

DESCRIPTION OF SYMBOLS 1 Operation panel 5 Frame 10 Seesaw button 20 Button 23 Extension part 25 Protrusion part 25a Long hole 30 Panel member (support member)
35 cylindrical part 36 clamping part 36a pin 37 tongue piece 40 support 50 printed circuit board 52 contact part 60 erroneous operation preventing means 62 guide part 62a guide surface 64 guided part

Claims (2)

A button that is selectively pressed at both ends in a specific direction is supported by the support member, and by pressing one of both ends of the button, the end of the pressed operation is in the pressing operation direction. In the seesaw button structure that is displaced to
The button has protrusions that protrude from the back surfaces of both ends, and each protrusion presses the movable part of the contact part via the support when the end provided with the protrusion is pressed. And is urged in the direction opposite to the pressing operation direction by the urging means provided at the contact portion,
The support member is provided with pins whose axial directions are substantially orthogonal to the specific direction and the pressing operation direction at positions corresponding to the protrusions of the button, and the pins are provided at the protrusions of the button. Long holes for slidably fitting are provided so as to extend in a direction substantially parallel to the pressing operation direction, and the buttons are supported by the support member by fitting the pins into the long holes, respectively. In the operating state, the pin is positioned on one end side of the elongated hole by urging by the urging means,
When one of the two end portions of the button is pressed, the button swings against the urging force of the urging means with a pin on the side opposite to the pressing operation as a fulcrum. Seesaw button structure.   The both long holes have an arc shape centered on the position of a pin fitted in the opposite long hole when the button is in a non-operating state. Seesaw button structure.

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