JP2005209565A - Push-button switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push-button switch assuring return of an operating member and obtaining a desired click feel. <P>SOLUTION: In the push-button switch, a reversal spring 4 is pressed in a direction crossing with the sliding direction of the operating member 6 through an acting part 6c along with the pushing operation in the sliding direction of a pushing part 6d. Then, the click feel is produced by a reversal movement of a reversal spring 4 due to the pushing and change over of a switch signal is carried out. When the operating member 6 is push operated, the operating member 6 is abutted after slide movement until the reversal spring 4 is reversed to a switch change over position. A reversal spring part 7c is provided to apply returning force to the slide moved operating member 6 after that. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pushbutton switch used as an operation switch for various electronic devices, and more particularly to a thin lateral push type pushbutton switch.

  As a conventional push button switch structure, it has an inclined piece which is cut and raised from the lid to the inside of the housing and faces the movable contact, and is interposed between the inclined piece and the movable contact, and has an elastic operating part. There is known a pushbutton switch in which an operation member having a slidable operation member slides on an inclined piece by pressing of a pressing portion and presses a movable contact to switch the contact (for example, see Patent Document 1).

Hereinafter, the structure of a conventional pushbutton switch will be described with reference to the drawings.
FIG. 14 is an exploded perspective view of a conventional push button switch, and FIG. 15 is a sectional view of the conventional push button switch.

  A conventional push button switch includes a housing 11 having an opening 10, fixed contacts 12 and 13 provided on an inner bottom portion of the opening 10, a movable contact 14 disposed on the fixed contacts 12 and 13, A dust-proof sheet 15 made of polyimide or the like provided on the contact 14, an operation member 16 that operates the movable contact 14 via the sheet 15, and a lid 17 that is attached to the top of the housing 10 and covers the opening. It consists of and.

The fixed contacts 12 and 13 are formed integrally with the housing 11 by insert molding, and external terminals 12 a and 13 a led out from the fixed contacts 12 and 13 are provided on the outer wall of the housing 11.
The housing 11 includes four protrusions 20 that protrude upward from the four corners, guide portions 21 that are provided in the vicinity of the protrusions 20, guide the operation member 16, and walls that protrude upward from one side end. Part 22, a block part 23 projecting outward from the other side end, and locking parts 24, 25 projecting outward from the projections 20 on the other side end and locking the lid body 17, respectively. ing.

The movable contact 14 is made of a thin metal plate having elasticity, and is disposed in the opening 10 of the housing 11. The movable contact 14 has two notches 26 parallel to the moving direction of the operation member 16, the peripheral portion 27 is always in contact with the fixed contact 12, and the central portion 28 is curved upward while the other portion is curved. Located on the stationary contact 13.
The dust-proof sheet 15 is placed on the upper surface 11 a of the housing 11, and the operation member 16 is placed on the sheet 15.

  The lid body 17 is provided at each of the four corners, and has a notch 30 that engages with each of the protrusions 20, a wall portion 31 that projects downward from the side end and abuts against the upper surface 11 a of the housing 11 and the upper end of the guide portion 21, and the like. A pair of arm portions 32 projecting downward from the side ends of the arm portions and engaging with the locking portions 24 and 25, respectively. The lid body 17 includes an inclined piece 33 that is cut and raised from the center portion to the inside of the housing 11 and faces the center portion 28 of the movable contact 14.

  The operating member 16 is provided with an operating portion 34 interposed between the inclined piece 33 and the central portion 28 of the movable contact 14, and a U-shape that is provided on the side of the operating portion 34 and slides on the guide portion 21. And a pressing portion 36 that protrudes outward from the side portion of the housing 11. The operating part 34 is connected to the pressing part 36 through the thin part 34a and has elasticity. Further, the inclined piece 33 engages with the opening 39 formed by the operating portion 34 and the guide portion 35.

  When the push button switch presses the pressing portion 36 of the operation member 16 in the left direction of FIG. 15 until it abuts against the block portion 23, the operation member is placed on the inclined piece 33 cut and raised from the lid body 17 to the inside of the housing 11. The 16 operating parts 34 are guided by sliding, and accordingly, the operating part 34 rotates in the counterclockwise direction of FIG. 15 while being elastically deformed by the thin-walled part 34a. The central portion 28 of the movable contact 14 is pressed through the sheet 15. As a result, the central portion 28 is inverted downward and comes into contact with the fixed contact 13 to be switched on.

Utility model registration No. 2572590

  However, in the structure of the conventional push button switch described above, when the pressed operation member is returned, the friction force between the operating portion of the operation member and the inclined piece of the lid is caused by the reversal force of the movable contact made of a thin metal plate having elasticity. For this reason, there is a possibility that the return force of the operating member may be insufficient, and if the reverse return force of the movable contact itself is set large, there is a problem that a desired click feeling cannot be obtained. .

  Therefore, an object of the present invention is to provide a pushbutton switch that solves the above-described problems, can reliably return the operation member, and can obtain a desired click feeling.

  In order to solve the above-described problems, the present invention provides a first solution means, a housing having a housing portion, a reversing spring disposed in the housing portion, and a pressing portion projecting from a side portion of the housing. And an operating member that slides in the storage portion, and the reversing spring intersects the sliding direction of the operating member via the operating portion in accordance with the pressing operation of the pressing portion in the sliding direction. A pushbutton switch that generates a click feeling and switches a switch signal by reversing the reversing spring by the pressing, and the operating member switches the reversing spring when the operating member is pressed. After the slide movement until it is reversed to the switching position, a contact is made, and thereafter, a return spring portion is provided for applying a return force to the slide-moved operation member.

As a second solution, when the return spring portion is formed on either the operation member or the housing and the operation member slides until the reversal spring is reversed to the switch switching position. Has a configuration in which the operation member and the casing are arranged so as to be in contact with each other via the return spring portion.
As a third solution, a stopper is provided between the operation member and the housing so that the operation member and the housing come into contact with each other when the operation member moves in the sliding direction. From the time of contact through the return spring portion to the time of contact with the stopper portion, a return force is applied to the operation member by the return spring portion.

As a fourth solution, the casing includes a housing made of a synthetic resin material having a storage portion, and a lid made of a metal plate attached to the upper surface of the housing, and the return spring portion is It was set as the structure formed in the said cover body.
As a fifth solution, a contact portion is provided on the back surface of the reversing spring to form a movable contact, a fixed contact is provided on the inner bottom surface of the housing housing portion, and the reversing spring is repeated on the fixed contact. When the operation member is pressed, the reversing spring is reversed via the actuating portion so that the contact portion contacts the fixed contact and the switch signal is switched. When the operation member slides, a return force is applied to the operation member by the return spring portion.

Further, as a sixth solving means, an operating portion having flexibility is formed on the operation member, an inclined piece cut and raised in the housing portion of the housing is formed on the lid, and the operation member is pressed. At the time of operation, the operating portion slides on the inclined piece and bends downward in accordance with the pressing of the pressing portion, so that the operating portion presses the reversing spring.
Further, as a seventh solving means, an inclined surface is formed in the operating portion of the operation member, and a swingable drive conversion member is provided in the housing portion of the housing, and when the operation member is pressed, the pressing portion The inclined surface of the operating portion slides with the drive conversion member in accordance with the pressing, and the drive conversion member is bent downward to press the reversal spring.

  As described above, the pushbutton switch of the present invention includes a housing having a housing portion, a reversing spring disposed in the housing portion, a pressing portion protruding from a side portion of the housing, and an operating portion. An operation member that slides and moves the reversing spring in a direction that intersects the sliding direction of the operation member via the operating portion in accordance with the pressing operation in the sliding direction of the pressing portion, and the reversing of the reversing spring by this pressing. A pushbutton switch that generates a click feeling and switches a switch signal by operation, and when the operation member is pressed, the operation member slides until it reverses the reversing spring to the switch switching position, and then comes into contact. Since the return spring portion is provided to apply the return force to the slid operation member, the return operation of the push button switch is performed by the stored force of the inverted reverse spring. In addition to the urging force to the operation member, because the return of the operating member by the restoring force of the return spring portion, it is possible to reliably return the operating member. Further, since the urging force of the return spring portion does not act on the operating member during the reversing operation of the reversing spring to the switch switching position, a desired click feeling can be obtained.

Further, when the return spring portion is formed on either the operation member or the housing and the operation member slides until the reversing spring is reversed to the switch switching position, the operation member and the housing are returned to the return spring portion. Since the return spring portion is provided on either the operating member or the housing, the configuration is simplified and the assemblability is improved.
Further, a stopper portion that contacts each other when the operation member moves in the sliding direction is provided between the operation member and the housing, and after the operation member and the housing are contacted via the return spring portion, Since the return spring is applied to the operation member by the return spring until the contact, the return spring continuously applies the return force until the operation member slides to a position where it comes into contact with the stopper. Therefore, the return of the operating member after the sliding movement can be performed reliably.

Further, the casing is made of a synthetic resin material housing having a storage portion and a metal plate lid attached to the upper surface of the housing, and the return spring portion is formed on the lid. Since the spring portion is formed of a metal plate, the life of the push button switch can be extended. Moreover, assembly can be performed easily.
Further, a contact portion is provided on the back surface of the reversing spring to form a movable contact, a fixed contact is provided on the inner bottom surface of the housing housing portion, and the reversing spring is disposed on the fixed contact so as to be repeatedly reversible. At the time of pressing operation, the reversing spring is reversed via the actuating part, and the contact part comes into contact with the fixed contact to switch the switch signal. Thereafter, when the operating member slides, it is operated by the return spring part. Since the return force is applied to the member, since the return spring portion applies the return force at the slide position after the switch signal is switched, the operation member can be reliably returned. A desired click feeling can be obtained.

In addition, a flexible operating part is formed on the operating member, and an inclined piece cut and raised in the housing part of the housing is formed on the lid, which operates in accordance with the pressing of the pressing part when the operating member is pressed. Since the operating part presses the reversing spring by sliding the part on the inclined piece and bending downward, the operating part that presses the reversing spring downward when the operating member slides is integrated with the operating member. Therefore, the push button switch can be thinned.
In addition, an inclined surface is formed in the operating portion of the operating member, and a swingable drive conversion member is provided in the housing housing portion. When the operating member is pressed, the inclined surface of the operating portion is moved along with the pressing of the pressing portion. Since the reversal spring is pressed by sliding with the drive conversion member and the drive conversion member bends downward, by providing a drive conversion member that can swing in contact with the operating portion, Since the drive conversion member can be moved in a direction intersecting the sliding direction, the reversing spring can be reliably pressed downward.

  An embodiment of the pushbutton switch of the present invention is shown in FIGS. 1 is a plan view of the push button switch, FIG. 2 is a rear view of the push button switch, FIG. 3 is a plan view of the housing, FIG. 4 is a cross-sectional view of the main part of the push button switch, and FIGS. FIG. 5 is an explanatory view showing a state in which the operating member is slid until the reversing spring is reversed to the switch switching position, and FIG. 6 is a state where the operating member and the return spring portion slid and moved after the reversing spring is reversed. FIG. 7 is an explanatory view showing a state in which the return force is applied in contact, and FIG.

  The push button switch of the present invention shown in FIG. 1 to FIG. 4 includes a housing 1 having a storage portion, fixed contacts 2 and 3 provided facing the inner bottom surface of the storage portion, and on the fixed contacts 2 and 3. A movable contact 4 made of a reversing spring disposed; a dustproof sheet 5 made of polyimide or the like provided on the movable contact 4; an operating member 6 for operating the movable contact 4 via the dustproof sheet 5; The lid 1 is attached to the upper surface of the housing 1 and covers the storage portion. The housing 1 and the lid 7 constitute a switch housing.

  The housing 1 is made of an insulating material such as synthetic resin, is formed in a box shape with an opening on the top surface, and has a storage portion 1a. Further, projecting projections 1b are formed at the four corners on the upper surface side of the housing 1, and engaging pieces 7b formed at the four corners of the lid 7 to be described later are engaged and positioned on the projections 1b. Has become. Further, a cut window portion 1c is provided on one side of the housing 1, and a pressing portion 6d of an operation member 6 to be described later protrudes into the cut window portion 1c and is movably engaged in the pressing direction. It has become.

  In addition, fixed contacts 2 and 3 made of conductive metal plates are integrally opposed to the inner bottom surface of the housing portion 1a of the housing 1 in a state where a part is exposed by a method such as insert molding. It is installed. Further, external connection terminals 2 a and 3 a led out from the fixed contacts 2 and 3 are provided so as to protrude outward from the side surface of the housing 1. The external connection terminals 2a and 3a protrude substantially parallel to the bottom surface of the housing 1 and are formed in a surface mounting terminal shape.

  The movable contact 4 is composed of a reversible spring made of a conductive thin metal plate having elasticity, and is disposed on the fixed contacts 2 and 3 of the housing portion 1 a of the housing 1, and its peripheral portion 4 a is connected to one fixed contact 2. While being always in contact, the central portion 4b serving as a contact portion is arranged in a state of facing upward on the other fixed contact 3 in a state of being curved upward. Further, the central portion 4b is formed so that the curved portion can be reversed when pressed, and is brought into contact with the fixed contact 3 during the reversal.

  The dustproof sheet 5 is made of an insulative resin sheet such as polyimide, and is disposed on the upper surface of the housing 1 so as to cover the housing portion 1a. An operation member 6 described later is placed on the dustproof sheet 5, and the central portion 4 b of the movable contact 4 is pressed by the operating portion 6 a of the operation member 6 through the dustproof sheet 5.

  The operation member 6 is made of an insulating material such as a synthetic resin. The operation member 6 has a base portion 6b having a substantially square shape and an opening 6a at the center, and a cantilever protruding from the opening 6a. A flexible actuating part 6c and a pressing part 6d projecting outward from the cut window part 1c of the housing 1 are formed. The operating portion 6c is connected to the pressing portion 6d through a thin arm portion 6e, and the operating portion 6c can be elastically displaced downward by bending the arm portion 6e.

  The operation member 6 is placed on the upper surface of the dustproof sheet 5 placed on the upper surface of the housing 1, and the pressing portion 6 d protruding from the cut window portion 1 c of the housing 1 is pressed, whereby the housing 1 is stored. It is arranged in the part 1a so as to be slidable in the lateral direction. The pressing portion 6d is formed with a stopper portion 6f that comes into contact with the stopper surface of the housing 1 and a lid body 7 to be described later when pressed, and a lid body 7 to be described later is provided behind the base portion 6b. A spring receiving portion 6g is provided in contact with the return spring portion 7c provided on the front side.

The lid body 7 is formed by punching and bending a conductive metal plate, and has a flat plate-like upper plate portion 7a. The lid 1 is bent downward from the four corners of the upper plate portion 7a, and the housing 1 L-shaped engaging piece portions 7b are provided to engage with the protrusions 1b provided at the four corners on the upper surface side. Further, between the pair of engaging piece portions 7b, 7b disposed on the back side of the housing 1, a return spring portion 7c that bulges to one side while having a spring property in the form of a double-supported beam is formed. The spring receiving portion 6g of the operation member 6 abuts on the return spring portion 7c, so that a return force is applied when the operation member 6 is pressed.
Thus, since the return spring portion 7c is formed integrally with the lid body 7 made of a metal plate, the life of the push button switch can be extended and the assembly can be performed easily.

  Further, the upper plate portion 7 a of the lid body 7 is cut and raised from the center portion to the inside of the housing portion 1 a of the housing 1, and the distal end side thereof is inserted into the opening portion 6 a provided in the base portion 6 b of the operation member 6. Thus, an inclined piece 7d facing the central portion 4b of the movable contact 4 is formed. The inclined piece 7d is formed to be bent downward, and the operating portion 6c provided at the tip of the flexible arm portion 6e of the operating member 6 slides on the inclined surface of the inclined piece 7d. As a result, the operating portion 6c is pushed down to press the central portion 4b of the movable contact 4 downward.

The inclined piece 7d is formed integrally with the lid body 7 by bending the upper plate portion 7a of the lid body 7. However, the present invention is not limited to this and is made of a synthetic resin having a similar inclined surface. An inclined surface on which the operating portion 6c slides may be formed by forming a part with a molding material and integrally engaging the part with the back surface side of the lid body 7. In this case, the return spring portion 7c may be provided integrally with the molded part. In this case, the contact position between the operation member 6 and the return spring portion 7c and the operation of the operation member 6 may be provided. The sliding positional relationship between the portion 6c and the inclined surface can be formed with high accuracy.
Further, since no opening is formed in the lid body 7 when the inclined piece 7d is raised, dustproofness can be increased, and air suction can be reliably performed when the substrate 7 is mounted.

  In order to assemble the pushbutton switch having the above-described configuration, first, the movable contact 4 is placed in the housing 1a of the housing 1, the movable contact 4 is covered with the dustproof sheet 5, and the periphery of the dustproof sheet 5 is surrounded by the housing 1. Paste on top. Next, after the operation member 6 is disposed on the dustproof sheet 5, the lid body 7 is placed on the housing 1. At this time, the assembly is completed by engaging the engaging pieces 7b and the projections 1b formed at the four corners and locking the lid 7 to the housing 1, respectively.

Next, the operation of the pushbutton switch having the above configuration will be described with reference to FIGS. In addition, (a) of each figure is principal part explanatory drawing which shows the relationship between the operation member 6 and the return spring part 7c, (b) of each figure is a principal part sectional explanatory drawing.
First, in the initial state when the operating member 6 is not pressed, the operating portion 6c of the operating member 6 is located near the root of the bent portion of the inclined piece 7d of the lid 7 as shown in FIG. The movable contact 4 and the fixed contact 3 are separated from each other without being elastically displaced downward.

From this state, when the pressing portion 6d of the operating member 6 is pressed rightward in FIG. 5, the operating portion 6c of the operating member 6 slides on the inclined surface of the inclined piece 7d cut and raised inside the housing 1 from the lid 7. Accordingly, the operating portion 6c rotates downward (clockwise) as shown in FIG. 5B while being elastically displaced by the arm portion 6e, so that the tip of the operating portion 6c is moved. The central portion 4 b of the movable contact 4 is pressed through the dustproof sheet 5.
As a result, the movable contact 4 formed of a reversing spring is reversed downward to obtain a click feeling, and the central portion 4b comes into contact with the fixed contact 3 and the switch is turned on. At this time, the spring receiving portion 6g on the back side of the operation member 6 is not in contact with the return spring portion 7c of the lid body 7, and the return force to the operation member 6 is not applied.

When the pressing portion 6d is further pressed from this state, the operating member 6 slides to the right in the figure while the switch is on as shown in FIG. When the return spring portion 7c is bent in contact with the return spring portion 7c, a return force is applied.
When the pressing portion 6d is further pressed from this state, the return spring portion 7c is further bent as shown in FIG. 7, and the stopper portion 6f of the pressing portion 6d comes into contact with the stopper surfaces of the housing 1 and the lid body 7 to operate the operating member. 6 slide movement is stopped. At this time, due to the spring property of the return spring portion 7c, the operation member 6 is in a state in which a return force is applied in the left direction in the figure.

  When the pressing state of the pressing portion 6d is released from this state, the operation member 6 is pushed back by the return force of the return spring portion 7c and is slid to the left in the drawing, and accordingly, the arm portion 6e itself is moved. The operating member 6 slides to the left in FIG. 5 by sliding on the inclined surface of the inclined piece 7d while the operating portion 6c rotates upward (counterclockwise) in FIG. Then, the initial state shown in FIG. 4 is restored. At this time, with the rotation of the operating portion 6c, the central portion 4b of the movable contact 4 is also reversed and returned upward by the elastic force and is separated from the fixed contact 3, and the switch is turned off.

In the above embodiment, the return spring portion 7c is formed on the lid body 7, and when the operation member 6 slides until the movable contact 4 is turned to the switch switching position by turning it over, The configuration is such that the spring receiving portion 6g on the back side of the operation member 6 and the lid 7 can be brought into contact with each other via the return spring portion 7c. Alternatively, a return spring portion may be formed, and a spring receiving portion may be formed on the inner surface of the lid body 7.
Thus, if the return spring portion 7c is provided on either the operating member 6 or the lid 7, the configuration becomes simple and the assemblability is improved.

  The operating member 6 is provided with a stopper portion 6f that comes into contact with the stopper surfaces of the housing 1 and the lid body 7 when the operating member 6 moves in the sliding direction, and the operating member 6 and the lid body 7 Since the return spring portion 7c applies a return force to the operation member 6 from the time of contact through the return spring portion 7c until the stopper portion 6f contacts the stopper surface, The return spring portion 7c continuously applies a return force until the stopper portion 6f slides to a position where it abuts against the stopper surface, so that the operation member 6 can be reliably returned after the slide movement. It has become.

  Further, a contact portion is provided on the back surface of the reversing spring to form the movable contact 4, the fixed contacts 2 and 3 are provided on the inner bottom surface of the housing portion 1 a of the housing 1, and the reversing spring is provided on the fixed contacts 2 and 3. The movable contact 4 is arranged so as to be repeatedly reversible, and when the operation member 6 is pressed, the movable contact 4 is reversed via the actuating portion 6c so that the contact portion contacts the fixed contacts 2 and 3 and is switched. Since the switching of the signal is performed, and thereafter, when the operation member 6 slides, the return spring portion 7c applies a return force to the operation member 6, so that the operation member 6 receives the switch signal. Since the return spring portion 7c applies a return force at the slide position after the switching of the operation, the operation member can be reliably returned and a desired click feeling can be obtained.

  In addition, the operating member 6 is formed with a flexible operating portion 6 c, and the lid 7 is formed with an inclined piece 7 d cut and raised in the housing portion 1 a of the housing 1. At the time of the pressing operation, as the pressing portion 6d is pressed, the operating portion 6c slides on the inclined piece 7d and bends downward, so that the operating portion 6c presses the movable contact 4. Since the operating portion 6c that presses the movable contact 4 downward can be formed integrally with the operating member 6 when the operating member 6 is slid, the push button switch can be made thinner.

  8 to 13 show another embodiment of the push button switch of the present invention, FIG. 8 is a plan view showing another embodiment of the push button switch, and FIG. 9 is a plan view showing the housing and the drive conversion member. 10 is a cross-sectional view of an essential part showing another embodiment of the pushbutton switch, and FIGS. 11 to 13 are also explanatory diagrams of the operation at the time of pressing. FIG. 11 is slid until the operating member reverses the reversing spring to the switch switching position. FIG. 12 is an explanatory view showing a state, FIG. 12 is an explanatory view showing a state in which the operating member slid after the reversing spring is reversed and the return spring portion are in contact with each other, and a returning force is applied, and FIG. It is explanatory drawing which shows the state which contact | abutted with the housing | casing in the stopper part.

The difference between the configuration of the present embodiment and the configuration of the first embodiment described above is that the configuration of the operating portion of the operation member is partially different from that of the first embodiment.
The same components as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  The push button switch shown in FIGS. 8 to 10 is disposed on the housing 1 having a storage portion, fixed contacts 2 and 3 provided to face the inner bottom surface of the storage portion, and the fixed contacts 2 and 3. A movable contact 4 made of a reversing spring, a dustproof sheet 5 made of polyimide or the like provided on the movable contact 4, a drive conversion member 8 for operating the movable contact 4 via the dustproof sheet 5, and this drive An operation member 9 that drives the conversion member 8 and a lid 7 that is attached to the upper surface of the housing 1 and covers the storage portion. The housing 1 and the lid 7 constitute a switch housing.

  The operation member 9 is made of an insulating material such as a synthetic resin. The operation member 9 includes a base portion 9b having a substantially square shape and an opening 9a at the center, and an inclination provided on one inner surface of the opening 9a. An actuating part 9c having a surface and a pressing part 9d protruding outward from the cut window part 1c of the housing 1 are formed.

  The operation member 9 is placed on the upper surface of the dustproof sheet 5 placed on the upper surface of the housing 1, and the pressing portion 9 d protruding from the cut window portion 1 c of the housing 1 is pressed, whereby the housing 1 is stored. It is arranged in the part 1a so as to be slidable in the lateral direction. The pressing portion 9d is formed with a stopper portion 9e that comes into contact with the stopper surface of the housing 1 and a lid body 7 to be described later when pressed, and is provided on the lid body 7 behind the base portion 9b. A spring receiving portion 9f that comes into contact with the return spring portion 7c is provided.

  The lid body 7 of this embodiment is formed by punching and bending a conductive metal plate, has a flat plate-like upper plate portion 7a, and has an L-shaped engagement piece portion 7b and a bulge in one side. The configuration in which the return spring portion 7c is formed is the same as the configuration of the first embodiment described above, but the upper plate portion 7a of the lid body 7 is located inside the housing portion 1a of the housing 1 from the center portion. The cut and raised inclined piece 7d is not provided. This is partly different. For this reason, since no opening is formed on the upper surface of the lid 7, dustproofness can be increased, air can be reliably sucked by the mounter during mounting on the substrate, and mounting accuracy can be improved.

The drive conversion member 8 is made of an elastic thin metal plate, and has a flat plate-like substrate portion 8a and an annular drive portion 8b formed to protrude from the upper surface side of the substrate portion 8a. The drive conversion member 8 is placed on the upper surface of the dustproof sheet 5 placed on the upper surface of the housing 1, and is sandwiched between the housing 1 and the lid body 7. Further, the operation member 9 is slidably disposed on the upper surface side of the drive conversion member 8 in a state where the drive portion 8b and the inclined operation portion 9c are in contact with each other.
When the operation member 9 is pressed, the driving portion 8b is pushed down by sliding the inclined surface of the operating portion 9c and the driving portion 8b, and the central portion 4b of the movable contact 4 is pressed downward. It is supposed to be.

  In order to assemble the pushbutton switch having the above-described configuration, first, the movable contact 4 is placed in the housing 1a of the housing 1, the movable contact 4 is covered with the dustproof sheet 5, and the periphery of the dustproof sheet 5 is surrounded by the housing 1. Paste on top. Next, after the drive conversion member 8 and the operation member 9 are disposed on the dustproof sheet 5, the lid body 7 is placed on the housing 1. At this time, the assembly is completed by engaging the engaging pieces 7b and the projections 1b formed at the four corners and locking the lid 7 to the housing 1, respectively.

Next, the operation of the pushbutton switch having the above configuration will be described with reference to FIGS. In addition, (a) of each figure is principal part plane explanatory drawing which shows the relationship between the operation member 9 and the return spring part 7c, (b) of each figure is a principal part sectional explanatory drawing.
First, in the initial state when the operation member 9 is not pressed, the drive portion 8b of the drive conversion member 8 is located near the upper portion of the inclined surface of the operation portion 9c of the operation member 9 as shown in FIG. The movable contact 4 and the fixed contact 3 are separated from each other without being elastically displaced downward.

From this state, when the pressing portion 9d of the operating member 9 is pressed in the right direction in FIG. 11, the driving portion 8b of the drive conversion member 8 is guided by sliding on the inclined surface of the operating portion 9c. Since the driving portion 8b is rotated downward as shown in FIG. 11B while being elastically displaced, the lower end of the driving portion 8b presses the central portion 4b of the movable contact 4 via the dustproof sheet 5.
As a result, the movable contact 4 formed of a reversing spring is reversed downward to obtain a click feeling, and the central portion 4b comes into contact with the fixed contact 3 and the switch is turned on. At this time, the spring receiving portion 9f on the back side of the operation member 9 is not in contact with the return spring portion 7c of the lid body 7, and the return force to the operation member 9 is not applied.

When the pressing portion 9d is further pressed from this state, the operating member 9 slides to the right in the figure while the switch is on as shown in FIG. When the return spring portion 7c is bent in contact with the return spring portion 7c, a return force is applied.
When the pressing portion 9d is further pressed from this state, the return spring portion 7c is further bent as shown in FIG. 13, and the stopper portion 9e of the pressing portion 9d comes into contact with the stopper surfaces of the housing 1 and the lid body 7 to operate the operating member. 9 slide movement is stopped. At this time, due to the spring property of the return spring portion 7c, the operation member 9 is in a state where a return force is applied in the left direction in the figure.

  When the pressing state of the pressing portion 9d is released from this state, the operating member 9 is pushed back by the return force of the return spring portion 7c and is slid in the left direction in the drawing. The operating member 9 slides in the left direction in FIG. 11 by sliding the driving portion 8b on the inclined surface of the operating portion 9c while rotating upward in FIG. 10 returns to the initial state. At this time, with the rotation of the drive unit 8b, the central part 4b of the movable contact 4 is also reversed and returned upward by the elastic force and is separated from the fixed contact 3, and the switch is turned off.

  Thus, in this embodiment, the operating portion 9c of the operating member 9 is formed with an inclined surface, and the housing 1a of the housing 1 is provided with the swingable drive conversion member 8 so that the operating member 9 is pressed. During operation, the inclined surface of the actuating portion 9c slides with the driving portion 8b of the drive converting member 8 in accordance with the pressing of the pressing portion 9d. Since it is configured to be pressed, by providing the drive conversion member 8 that can swing in contact with the operating portion 9 c of the operation member 9, the drive conversion member in a direction intersecting the sliding direction of the operation member 9. Since 8 can be moved, the movable contact 4 can be surely pressed downward.

According to the embodiment of the present invention described above, when the operation members 6 and 9 are pressed, the operation members 6 and 9 are slid until the movable contact 4 formed of a reversing spring is reversed to the switch switching position. Since the return spring portion 7c that abuts afterward and continuously applies a return force to the slidably moved operation members 6 and 9 thereafter is provided, the return operation of the push button switch is performed by the inverted movable contact 4 itself. In addition to the urging force applied to the operation members 6 and 9 by the stored force of reversing and returning, the operation members 6 and 9 are returned by the return force of the return spring portion 7c. Can be reliably restored.
Further, during the reversing operation of the movable contact 4 to the switch switching position, the urging force of the return spring portion 7c does not act on the operation members 6 and 9, so that a desired click feeling can be obtained. ing.

It is a top view which shows the pushbutton switch of this invention. It is a rear view which shows the pushbutton switch of this invention. It is a top view which shows the housing of this invention. It is principal part sectional drawing which shows the pushbutton switch of this invention. It is operation | movement explanatory drawing which shows the state which slid until the operation member of this invention reversed the reversing spring to the switch switching position. It is operation | movement explanatory drawing which shows the state to which the operating member and slide return part which were slid after the reversal spring of this invention reversed and contact | abutted and the return force was provided. It is operation | movement explanatory drawing which shows the state which the operation member and housing | casing which carried out the slide movement of this invention contact | abutted by the stopper part. It is a top view which shows the other Example of the pushbutton switch of this invention. It is a top view which shows the housing and drive conversion member of other Examples of the pushbutton switch of this invention. It is principal part sectional drawing which shows the other Example of the pushbutton switch of this invention. It is operation | movement explanatory drawing which shows the state which slid until the operation member of the other Example of the pushbutton switch of this invention reversed the reversal spring to the switch switching position. It is operation | movement explanatory drawing which shows the state to which the operating member and the return spring part which carried out the sliding movement after the reversal spring of the other Example of the pushbutton switch of this invention reversed and contact | abutted and the return force was provided. It is operation | movement explanatory drawing which shows the state which the operation member and the housing | casing which carried out the slide movement of other Examples of the pushbutton switch of this invention contact | abutted by the stopper part. It is a disassembled perspective view which shows the conventional pushbutton switch. It is sectional drawing which shows the conventional pushbutton switch.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Housing 1a: Storage part 1b: Protrusion 1c: Cutting window part 2: Fixed contact 2a: External connection terminal 3: Fixed contact 3a: External connection terminal 4: Movable contact (reverse spring)
4a: peripheral part 4b: central part (contact part)
5: Dustproof sheet 6: Operation member 6a: Opening part 6b: Base part 6c: Actuating part 6d: Pressing part 6e: Arm part 6f: Stopper part 6g: Spring receiving part 7: Lid 7a: Upper plate part 7b: Engagement Joint piece portion 7c: Return spring portion 7d: Inclined piece 8: Drive conversion member 8a: Substrate portion 8b: Drive portion 9: Operating member 9a: Opening portion 9b: Base portion 9c: Actuating portion 9d: Pressing portion 9e: Stopper portion 9f: Spring receiving part

Claims (7)

  A housing having a storage portion; a reversing spring disposed in the storage portion; a pressing portion projecting from a side portion of the housing; and an operation member that slides within the storage portion. In accordance with the pressing operation of the pressing portion in the sliding direction, the reversing spring is pressed in a direction intersecting the sliding direction of the operating member via the operating portion, and the reversing operation of the reversing spring by this pressing causes a click feeling. A push button switch that performs generation of the switch signal and switching of the switch signal, and when the operation member is pressed, the operation member slides until the reversing spring is reversed to the switch switching position, and then contacts, and thereafter A push button switch comprising a return spring portion for applying a return force to an operation member slid and moved.   The return spring portion is formed on either the operation member or the casing, and when the operation member slides until the reversing spring is reversed to the switch switching position, the operation member and the casing 2. The pushbutton switch according to claim 1, wherein the pushbutton switch is arranged so as to be able to contact with the return spring portion.   A stopper portion is provided between the operation member and the housing so as to contact each other when the operation member moves in the sliding direction, and the operation member and the housing are in contact with each other via the return spring portion. The push button switch according to claim 1 or 2, wherein a return force is applied to the operation member by the return spring portion during a period from contact to the stopper portion.   The housing includes a housing made of a synthetic resin material having a storage portion, and a lid made of a metal plate attached to the upper surface of the housing, and the return spring portion is formed in the lid. The pushbutton switch according to any one of claims 1 to 3.   A contact portion is provided on the back surface of the reversing spring to form a movable contact, a fixed contact is provided on the inner bottom surface of the housing housing portion, and the reversing spring is disposed on the fixed contact so as to be repeatedly reversible. When the member is pressed, the reversing spring is reversed via the actuating portion so that the contact portion comes into contact with the fixed contact and the switch signal is switched. Thereafter, when the operation member slides. The push button switch according to claim 1, wherein a return force is applied to the operation member by the return spring portion.   A flexible operating portion is formed on the operating member, an inclined piece cut and raised in the housing portion of the housing is formed on the lid, and the pressing portion is pressed when the operating member is pressed. The push button switch according to claim 4 or 5, wherein the actuating part slides on the inclined piece and bends downward so that the actuating part pushes the reversal spring. An inclined surface is formed in the operating portion of the operating member, and a swingable drive conversion member is provided in the housing portion of the housing, and when the operating member is pressed, 6. The pushbutton switch according to claim 4, wherein an inclined surface slides with the drive conversion member, and the drive conversion member is bent downward to press the reversal spring.

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