JP2023090354A - push switch - Google Patents

Abstract

An object of the present invention is to provide a press switch capable of effectively reducing collision noise. An operating member (100) is slidably stored in a storage section (11) inside an opening (13) of a case (10). The switch mechanism portion 113 installed on the bottom side of the storage portion 11 is turned on and off by the switch pressing portion 73 of the operation member 100 . The operating member 100 has a lid portion 40 that closes the opening portion 13 and an operating body 60 that has a switch pressing portion 73 and is housed in the housing portion 11 . A projection 27 for sound deadening is provided on the tip edge 25 surrounding the opening 13 of the case 10, with which the lower surface of the lid 40 abuts. A light-emitting element 111 is arranged near the center of the bottom surface of the housing portion 11 . The switch mechanism portion 113 and the switch pressing portion 73 are arranged at positions adjacent to the light emitting element 111 while avoiding the position of the light emitting element 111 . [Selection drawing] Fig. 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push switch that is turned on and off by pushing an operation member (such as a key top).

Conventionally, as shown in Patent Document 1, for example, a switch holder (20) is mounted on a substrate (10) on which a switch element (11) is mounted, and a switch knob (40) is slidably mounted on the switch holder (20). , and the switch knob (40) is slid by pressing the cover (42) of the switch knob (40), and thereby the switch element (11) is moved by the pressing portion (50) of the switch knob (40). There is a push switch that is structured to be turned on and off by being pushed.

JP 2008-177077 A JP 2006-190552 A

In the press switch of this type of structure, when the switch knob (40) is pressed to turn on the switch element (11), the back surface of the cover (42) of the switch knob (40) is placed against the switch holder (20). There is a risk that the tip end surface will come into contact with the collision noise that cannot be ignored.

That is, when the switch knob (40) is strongly pressed, the rear surface of the lid (42) collides with the front end surface of the switch holder (20), resulting in a loud collision sound.

In order to reduce the collision noise, for example, the cushioning member (7) described in Patent Document 2 may be attached to the tip surface of the switch holder (20) described in Patent Document 1. However, there is a concern that the cushioning member may be forgotten to be attached when assembling the push switch, or the attached cushioning member may come off during use of the push switch.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a push switch capable of effectively reducing the impact sound on the case when the operating member is pushed.

In the present invention, an operation member is slidably stored in a storage portion inside an opening provided in a case, and a switch mechanism portion installed on the bottom side of the storage portion of the case is operated by a switch pressing portion provided in the operation member. In the push switch that is turned on and off, the operation member includes a lid portion that closes an opening of the case, and an operating body that has the switch pressing portion and is housed in the housing portion of the case, It is characterized in that a protrusion is provided at a position surrounding the periphery of the opening of the case so as to be brought into contact with the cover of the operation member.
According to the present invention, when the lid portion of the operating member is pressed to turn on/off the switch mechanism portion, the lower surface of the lid portion is in point contact with the projection without surface contact with the surface surrounding the opening of the case. Therefore, it is possible to effectively reduce the collision noise caused by the contact.
In addition, noise reduction can be achieved without adding a cushioning member, and the configuration is simple and cost can be reduced.

Further, in addition to the above features, the present invention is characterized in that a light emitting element is arranged near the center of the bottom side of the storage portion of the case, and the switch mechanism portion is arranged at a location adjacent to the light emitting element. .
A light-emitting element was placed near the center of the housing portion of the case to enhance the lighting effect. For this reason, the switch mechanism part is installed at a position away from the vicinity of the center of the storage part, avoiding the position of the light emitting element. Therefore, when the operating member is lowered to press the switch mechanism, the operating member is slightly tilted, and the lower surface of the cover on the tilted side tries to strongly abut against the surface surrounding the opening of the case. According to this, since the lid portion is in point contact with the projection (not in surface contact), even if the contact force is strong, it is possible to effectively reduce the collision noise caused by the contact.

Further, in addition to the above features, the present invention is characterized in that when the opening of the case is projected from the top side or the bottom side, the projection is at least on the side facing the switch mechanism with respect to the center point of the opening of the case. It is characterized by being arranged at the position of
Since the switch mechanism is displaced from the center point of the opening of the case, when the operation member is lowered to press the switch mechanism, the operation member is slightly tilted, and the lower surface of the lid on the tilted side is the opening of the case. However, according to the present invention, the lid part makes point contact with the projection (not surface contact), so even if the contact force is strong, the collision sound due to contact is generated. can be effectively reduced.

According to the present invention, it is possible to effectively reduce the impact sound of the operation member against the case.

1 is a perspective view of a push switch 1; FIG. FIG. 2 is a cross-sectional view of the push switch 1 (a cross-sectional view taken along line AA in FIG. 1); 2 is an exploded perspective view of the push switch 1; FIG. 2 is an exploded perspective view of the push switch 1 as seen from below; FIG. It is the figure which looked at the case 10 which attached the board|substrate 110 from the upper surface side. 4 is a diagram showing the positional relationship among the light emitting element 111, the switch mechanism 113, and the projections 27 (27a to 27f) when the lid 40 is viewed from directly above. FIG. 4A and 4B are operation explanatory diagrams of the push switch 1; FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view of a push switch 1 according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the push switch 1 (cross-sectional view along line AA in FIG. 1), and FIG. 3 is an exploded perspective view of the push switch 1. 4 is an exploded perspective view of the push switch 1 as seen from below. As shown in these figures, the push switch 1 comprises a case 10, an operation member 100 consisting of a lid portion 40 and an operating body 60, a substrate 110 and a connector case 130 which are installed on the bottom side of the case 10. configured as follows. In the following description, "up" means the direction in which the lid portion 40 is viewed from the case 10, and "down" means the opposite direction. is not intended to limit

The case 10 is an integrally molded product made of synthetic resin, and has a substantially rectangular shape with a storage portion 11 penetrating vertically in the center. The opening 13 on the upper side of the storage section 11 is used as an opening on the operation member insertion side, and the opening 15 on the lower side is used as an opening on the substrate insertion side.

Three of the four inner surfaces of the storage portion 11 inside the upper opening 13 are provided with linear guide uneven portions 17, 19, 21, and 23 extending in the vertical direction.

There are four tip sides (tip face) 25 surrounding the periphery of the upper opening 13, and two dome-shaped small protrusions 27 (27a to 27f) protrude from each of three sides. , are provided near both ends of the corresponding side. Among these projections 27 (27a to 27f), projections 27 that are particularly required are projections 27a, 27b, 27c and 27d. The reason will be described later.

A flange portion 29 is provided on the side of the outer peripheral side surface of the case 10 near the tip side 25 so as to protrude in the horizontal direction. In addition, a stepped portion 33 (see FIG. 2) for locking the substrate is formed on the inner surface of the housing portion 11 of the case 10 below. Claw-shaped locking portions 35, 35 (see FIGS. 2 and 4) are formed below the flange portion 29 on both left and right outer surfaces of the case 10, and rectangular through holes are formed below them. are formed. Insertion holes 39 , 39 into which case locking pieces 49 , 49 of the lid portion 40 described below are inserted are formed in the flange portion 29 above the locking portions 35 , 35 .

The lid portion 40 is an integrally molded product of transparent synthetic resin, and is formed in a substantially rectangular box shape with an open bottom surface. That is, the side wall portion 43 protrudes downward from the lower surface of the outer circumference of the lid portion main body 41 in the shape of a substantially rectangular flat plate. As shown in FIG. 4, a pair of thin-plate-like locking pieces 45, 45 protrude downward from the lower surface of the lid body 41. As shown in FIG. The engaging pieces 45, 45 are substantially rectangular elongated downward, and are installed facing each other, and engaging portions 47, 47 each formed of a through hole are formed in the vicinity of the lower ends thereof. . A pair of thin plate-shaped case locking pieces 49, 49 protrude downward from positions outside the locking pieces 45, 45 on the lower surface of the lid body 41. As shown in FIG. The case locking pieces 49, 49 are generally rectangular elongated downward, and are opposed to each other. there is An opaque coating is applied to the upper surface of the lid portion 40, and a desired pattern (including letters and the like) 53 is formed in the shape of a blank letter in the center thereof. This pattern 53 is brightly illuminated by a light emitting element 111 described below.

The actuating body 60 is an integrally molded product of synthetic resin, and is formed in a substantially rectangular box shape that is open at the top and bottom. The actuating body 60 is sized to be vertically movably inserted into the housing portion 11 of the case 10. A through hole 61 is provided in the interior thereof, and a vertically oriented guide concave/convex portion 63 is formed on the outer peripheral side surface of the actuating body 60. , 65, 67, 69 are provided. The guide uneven portion 63 engages the guide uneven portion 17 of the case 10 so as to be vertically movable, and the guide uneven portion 65 engages the guide uneven portion 19 of the case 10 so as to be vertically movable. The concave-convex portion 67 is engaged with the concave-convex portion 21 for guide of the case 10 so as to be vertically movable, and the concave-convex portion 69 is engaged with the concave-convex portion 23 for guide of the case 10 so as to be vertically movable. The through-hole 61 has a rectangular shape and is formed to a size that allows the outer side surfaces of the locking pieces 45, 45 of the lid portion 40 to be inserted substantially exactly. Claw-like locked portions 71, 71 for locking the locking portions 47, 47 of the pieces 45, 45 are protruded. A switch pressing portion 73 for pressing a pressed portion 114 of a switch mechanism portion 113 described below protrudes downward from one of the four lower sides of the operating body 60 .

The substrate 110 has a substantially rectangular shape and has external dimensions such that it can be inserted through the opening 15 on the lower side of the case 10 . The switch mechanism section 113 is installed, and various other electronic components (not shown) are installed. A plurality of external output metal terminals 117 protrude from the bottom surface of the substrate 110 . The switch mechanism portion 113 is a tact switch in this example, and a pressed portion 114 protrudes from the center of its upper surface. When the pressed portion 114 is pressed, the pressed portion 114 descends and the switch is turned on, and when the pressing is released, the pressed portion 114 rises to its original position and the switch is turned off.

The connector case 130 is an integrally molded product of synthetic resin, and has a protruding portion 131 protruding from the lower surface side thereof, and a through hole 133 penetrating vertically through the protruding portion 131 . A female connector (not shown) is inserted into the projecting portion 131 . Hook-shaped locking portions 135 , 135 that are locked to the locked portions 37 , 37 of the case 10 are formed on both left and right outer side faces of the connector case 130 .

To assemble the push switch 1, first, the actuating body 60 is arranged on the lower surface of the lid portion 40. At this time, the pair of locking pieces 45, 45 of the lid portion 40 are inserted into the through-holes 61 of the actuating body 60, and the through-holes are closed. Locked portions 71, 71 provided inside 61 are locked to locking portions 47, 47 provided on locking pieces 45, 45 respectively. As a result, the lid portion 40 and the operating member 60 are integrated to form the operating member 100 .

Next, the board 110 and the connector case 130 are inserted through the opening 15 on the bottom side of the case 10 , the board 110 is brought into contact with the board locking stepped part 33 in the storage part 11 , and each locking part of the connector case 130 is pressed. 135 , 135 are locked to the locked portions 37 , 37 of the case 10 . This completes the fixing of the board 110 and the connector case 130 to the case 10 . FIG. 5 is a top view of the case 10 to which the substrate 110 and the connector case 130 are attached. As shown in the figure, the light emitting element 111 and the switch mechanism portion 113 on the substrate 110 are exposed in the storage portion 11 of the case 10, the light emitting element 111 is positioned substantially in the center, and the switch mechanism portion 113 is It is positioned adjacent to the light emitting element 111 . Further, the protrusion 27 is at least at a position facing the switch mechanism portion 113 with respect to the center point B of the opening 13 of the case 10 when the opening 13 of the case 10 is projected from the top side or the bottom side (position on the opposite side). ) 27a, 27b, 27c and 27d.

Then, the operation member 60 portion of the assembled operating member 100 is inserted into the storage portion 11 from the opening portion 13 of the case 10, and at the same time, the case locking pieces 49, 49 of the lid portion 40 are inserted into the case 10. , and the locking portions 35 , 35 of the case 10 are locked to the locking portions 51 , 51 of the lid portion 40 . At this time, the guide concave-convex portions 63, 65, 67, 69 of the operating body 60 are engaged with the guide concave-convex portions 17, 19, 21, 23 of the case 10 so as to be vertically movable. At this time, the tip of the switch pressing portion 73 of the operating body 60 is in contact with the upper surface of the pressed portion 114 of the switch mechanism portion 113 . The above assembly procedure is only an example, and it goes without saying that other various different assembly procedures may be used for assembly.

When the light emitting element 111 emits light in the push switch 1 in the state shown in FIG. Then, the portion of the pattern 53 at the center of the upper surface of the lid portion 40 is illuminated brightly. Since the light-emitting element 111 is positioned near the center of the storage portion 11, the lower surface of the lid portion 40 can be illuminated substantially evenly, and good illumination can be performed.

On the other hand, in the push switch 1 in the state shown in FIG. 2, when the upper surface of the lid portion 40 is pushed down, the entire operating member 100 is lowered, and the switch pushing portion 73 pushes the pushed portion 114 of the switch mechanism portion 113, thereby pushing the switch. to turn on. When the pressing of the lid portion 40 is released, the switch pressing portion 73 is pushed up by the automatic restoring force of the switch mechanism portion 113, the switch is turned off, and at the same time the operating member 100 returns to its original position.

FIG. 6 is a diagram showing the positional relationship between the light emitting element 111, the switch mechanism portion 113, and the protrusions 27 (27a to 27f) when the lid portion 40 is viewed from directly above. As described above, when the vicinity of the center of the upper surface of the lid portion 40 (for example, the center point B portion shown in FIG. 6) is pressed, the switch mechanism portion 113 and the switch pressing portion 73 are positioned away from the pressing position. A moment force acting to incline the tip of the switch pressing portion 73 (in the direction of arrow C in FIG. 7) acts on the tip of the switch pressing portion 73 . Therefore, as shown in FIG. 7, when the switch of the switch mechanism portion 113 is turned on, the lid portion 40 is projected from the top surface side or the bottom surface side, and the center point B of the lid portion 40 (this is the center of the openings 13 and 15) point), the lower surface of the lid portion 40 (the lid portion main body 41) on the side facing the switch mechanism portion 113 (the opposite side, that is, the left side in FIG. 7) surrounds the periphery of the opening portion 13 of the case 10. Trying to hit 25 strongly.

As a result, the strong contact tends to generate a collision sound. Since the surfaces are not abutted but supported at points, the impact noise is suppressed.

Of course, even if the operating member 100 descends horizontally, the lower surface of the lid portion 40 contacts all the six projections 27a to 27f to reduce the collision noise. When they come into contact with each other, a strong force is applied to a part of the surfaces due to the small area of the contacting surfaces, resulting in a larger impact sound.

In other words, the protrusion 27 is located at least at a position ( Positions 27a, 27b, 27c, and 27d in the above example) are particularly preferable in order to effectively reduce collision noise due to contact.

As described above, in the push switch 1, the operation member 100 has the lid portion 40 for closing the opening 13 of the case 10 and the switch push portion 73, and is stored in the housing portion 11 of the case 10. and the body 60, and the sound-muffling projection 27 is provided at a position surrounding the periphery of the opening 13 of the case 10 so as to abut against the cover 40 of the operation member 100. Therefore, the cover 40 of the operation member 100 When the switch mechanism portion 113 is turned on and off by pressing , the bottom surface of the lid portion 40 does not come into surface contact with the surface surrounding the opening 13 of the case 10, but makes point contact with the projection 27. can be effectively reduced. In addition, noise reduction can be achieved without adding a cushioning member, and the configuration is simple and cost can be reduced.

Further, in the push switch 1, the light emitting element 111 is arranged near the center of the bottom side of the housing portion 11 of the case 10, so that the entire lower surface of the lid portion 40 can be illuminated substantially evenly to enhance the lighting effect. can. On the other hand, for this reason, the switch mechanism portion 113 is installed at a position adjacent to the light emitting element 111 avoiding the position of the light emitting element 111, that is, at a position away from the vicinity of the center of the storage portion 11. When the operation member 100 is lowered and the switch mechanism 113 is pressed, the operation member 100 is slightly inclined, and the lower surface of the lid portion 40 on the lower side of the inclination is about to strongly abut against the tip surface 25 around the opening 13 of the case 10 . However, as described above, the cover 40 makes point contact with the sound deadening protrusions 27a, 27b, 27c, and 27d (not surface contact), so even if the contact force is strong, the collision noise due to contact is effectively eliminated. can be significantly smaller.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical ideas described in the claims, specification and drawings. It is possible. Any shape, structure, or material that is not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as it produces the action and effect of the present invention. For example, in the above-described embodiment, the lid portion 40 and the operating member 60, which constitute the operation member 100, are formed as separate parts, but they may be formed as one part by integral molding. The protrusion 27 may be only the protrusions 27a and 27b, or only the protrusions 27c and 27d, or may be only one of the protrusions 27a to 27f. The protrusions 27e and 27f located on the switch mechanism 113 side may not necessarily be provided in order to reduce noise at the time of collision. It is better to provide it in order to balance the lid part 40 so that it becomes horizontal when it is closed. Moreover, the embodiments shown in the above description and each drawing can be combined with each other as long as there is no contradiction in the purpose, configuration, and the like. In addition, even if only a part of the above description and the contents of each drawing can be independent embodiments, the embodiment of the present invention is one embodiment in which the above description and each drawing are combined. is not limited to

Reference Signs List 1 push switch 10 case 11 storage portion 13, 15 opening 25 tip side (tip surface)
27 Projection 40 Lid 60 Actuator 73 Switch Pressing Part 100 Operating Member 111 Light Emitting Element 113 Switch Mechanism Part B Center Point of Opening

Claims (3)

An operation member is slidably stored in a storage portion inside an opening provided in a case, and a switch mechanism portion installed on the bottom side of the storage portion of the case is turned on and off by a switch pressing portion provided in the operation member. at the switch,
The operation member includes a lid portion that closes the opening of the case, and an operating body that has the switch pressing portion and is housed in the housing portion of the case,
A press switch, wherein a projection is provided at a position surrounding the opening of the case so as to be brought into contact with the cover of the operating member. The press switch according to claim 1,
A light emitting element is arranged near the center of the bottom side of the storage portion of the case, and
A press switch, wherein the switch mechanism portion is arranged adjacent to the light emitting element. The press switch according to claim 1 or 2,
When the opening of the case is projected from the top side or the bottom side, the protrusion is arranged at least at a position on the side facing the switch mechanism with respect to a center point of the opening of the case. press switch.

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