JPH0822741A - Switch - Google Patents

Abstract

PURPOSE:To perform smooth slide operation by maintaining a sandwiching condition having always stable pressure contact force regardless of dimensional dispersion or abrasion of a slidingly movable part when a board is slidably installed by sandwiching it by an operation button and a slidingly movable plate. CONSTITUTION:Sliding projections 11 of elastic plates 10 of a slidingly movable plate 2 are energized by elastic force of the elastic plates 10, and come into contact with a surface on the side to be operated of a board 101 with light pressure contact force. Therefore, even if dimensional dispersion is caused in an engaging leg 124 of an operation button 120 or the slidingly movable projections 11, it can be absorbed by elastic deformation of the elastic plates 10. Now, when a dimension of the slidingly movable projections becomes larger than a prescribed dimension, since the elastic plates 10 are elastically deformed and are recessed and absorb the dispersion, always smooth operation can be performed without exerting influence on slide operation of the operation button 120. When the dimension of the projections 11 becomes smaller than the prescribed dimension, since the elastic plates 10 are elastically deformed in a projecting shape and absorb the dispersion, always stable slide operation can be maintained even in long-term use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch used for small electric equipment such as an electric razor, and more particularly to a switch for sliding operation.

[0002]

2. Description of the Related Art The structure of a conventional slide type switch used in this type of small electric equipment will be described with reference to FIGS.

The switch 100 includes a substrate 101 and the substrate 1.
Operation button 120 as an operation body disposed on the operation side of 01
And a slide plate 130 as a slide body which is disposed on the operated side of the substrate and is operated integrally with the operation button 120.

On the operating side of the substrate 101, there is formed a rectangular recess 102 having a bottom surface as a sliding surface 102a. The sliding surface 102a has the sliding surface 102a.
It is located between the pair of slide holes 103 formed by penetrating a and both slide holes 103, and the sliding surface 10
An opening 104 is formed so as to penetrate the 2a.

Of the opening edges of the opening 104, a notch groove 105a as a locking portion is formed at the opening edge 105 on the slide hole 103 side, and the opening edge 106 extends in the longitudinal direction of the slide hole 103. Along the two long grooves 1
06a is formed. An arcuate projection 107 is integrally formed on the operated side located at the front of the long groove 106.

Next, in the figure of the operation button 120, two anti-slip projections 122 are provided on the upper surface of the operation button 120 to prevent fingers and the like from slipping during operation.
An elongated through hole 123 is formed between the two, and both ends of the lower surface have locking claws 124 as engaging portions at the tip.
A pair of engagement legs 124 provided with a are formed.
The engagement leg 124 is slidably fitted in the slide hole 103 formed in the substrate 101. A guide surface 124b for guiding the engaging claw 124a when the engaging claw 124a is inserted into the slide hole 103 is formed at the tip of the engaging claw 124a.

Next, the sliding plate 130 has a square opening hole 131 formed at the center thereof, and an opening edge 132 corresponding to the slide hole 103 formed in the substrate 101 is formed in the opening edge of the opening hole 131. Is an engaging edge 1 as an engaged portion with which the engaging leg 124 is fitted and the locking claw 124a is engaged.
An engagement notch 133 having 33a is formed. Further, two elastic pieces 134a are formed at the opening edge 134 of the opening hole 131, and two elastic pieces 135a are similarly formed at the opening edge 135 so that one end side thereof is integrally formed with the sliding plate 130, and , These elastic pieces 134a and 13
The other end side of 5a is integrally coupled to a base portion 136c of a lock button 136 having locking portions 136a as locked portions at both ends, and an operation convex portion 136b is integrally formed on the base portion 136c. . The elastic pieces 134a and 135a allow the operation button 136 to always have the tip of the operation convex portion 136b protruded from the through hole 123 of the operation button 120, and the locking piece 136a is formed in the cutout groove 105a of the substrate 101.
It is formed in a curved shape that is slightly convex upward so as to urge it in the direction to engage with. In addition, the operation convex portion 136b
The width of the opening, that is, the dimension in the direction orthogonal to the elastic pieces 134a and 135a is set to be slightly smaller than the width of the opening 104 corresponding to the width direction.
You can move inside. In addition, the sliding plate 130
A projection 137 is formed on the upper surface of the above, outside the both engagement notches 133, and a movable contact 139 is integrally attached to the back surface. Further, the sliding plate 130
In the figure, a pair of holding pieces 138 having arcuate projections 138a on the tip end which engages and disengages with the circular projection 107 provided on the operated side of the substrate 101 is formed at the left end. The sliding plate 130, the elastic pieces 134a and 135a formed on the sliding plate 130, the lock button 136, the protrusion 137, and the holding piece 138 are integrally formed of synthetic resin.

Assembly of the substrate 101, the operation button 120 and the sliding plate 130 configured as described above will be described. First, the sliding plate 130 is provided with the operation protrusion 136 b of the lock button 136 and the locking piece 136 a in the opening 10 of the substrate 101.
4 and the notch groove 105a to be positioned on the operated side of the substrate 101. Then, push the operation button 120 through the through hole 1
The engaging leg 124 is inserted into the slide hole 103 while positioning the operation convex portion 136b of the lock button 136 to be inserted into the slide hole 23, the slide hole 103 is penetrated, and the engaging claw 124a at the tip end thereof is slid. Engage with the engaging edge 133a of the engaging notch 133 of the plate 130. Then, when the engaging claw 124a is engaged with the engaging edge 133a of the engaging cutout portion 133 of the sliding plate 130, the operation button 120 and the sliding plate 13 are engaged.
"0" means that the substrate 101 is interposed and integrated, and the projection 137 formed on the sliding plate 13 is integrated.
Touches the surface of the substrate 101 on the operated side in a light pressure contact state. As a result, the operation button 120 and the sliding plate 130 are integrated and attached to the substrate 101 through the protrusion 137 without rattling. Further, in this state, the elastic piece 135a of the sliding body 130 is movably positioned in the long groove 106a of the substrate 101.

Further, as shown in FIG. 6, the sliding plate 130 is
A fixed contact mounting plate 140 is attached to the fixed contact mounting plate 140 by a screw 142 shown by a chain double-dashed line, and a pair of fixed contacts 141 are fixed to the fixed contact mounting plate 140. Movable contact 139
As the slider slides, the movable contact 139 is brought into contact with and separated from the movable contact 139 to be closed or opened. Note that 143
Is a cover body of the switch 100 attached to the substrate 101.

Then, in a state where the operation button 120 and the sliding plate 130 are integrated, the operation button 120 has the back surface thereof on the sliding surface 10 of the rectangular recess 102 of the substrate 101.
It can slide while sliding on 2a.

Next, the operation of the switch assembled as described above will be described. First, when the operation button 120 is positioned on the left side in FIG. 5, that is, in the first position, the locking piece 136a of the lock button 136 is set to the substrate 1
01 and the operation convex portion 13
6b is inserted into the through hole 123 of the operation button 120, and the tip portion thereof penetrates through the through hole 123 and projects upward. In addition, in this first position, the movable contact 139 is separated from the fixed contact 141 and is in a non-contact state, and the switch is in an open state. The circular protrusion 107 is held by the holding piece 138 and held in this state. Therefore, even if an unexpected external force is applied to the operation button 120, the operation button 120 does not slide. Next, when trying to position the operation button 120 at the right side position in FIG. 5, that is, the second position,
The operation convex portion 136b of the lock button 136 protruding from the through hole 123 of the operation button 120 is pushed with a finger so as to be immersed in the through hole 123, and the locking piece 136a is attached to the substrate 101.
Lower than the surface on the operated side of the device to release the engagement between the locking piece 136a and the cutout groove 105a, and then the operation button 1
When 20 is slid to the right side, that is, to the second position side, the arcuate projection 138a of the holding piece 138 becomes
07, the holding piece 138 is passed over the circular projection 1
The holding of 07 is released, and the operation button 120 can be slid to the second position. In this second position, the movable contact 139 contacts the fixed contact 141 and the switch 1 is closed.

Further, when returning from the second position to the first position, since the locking piece 136a is in a free state, if the operation button 120 is continuously slid to the left side, the holding piece 136a is held. The arc-shaped projection 138a of the reference numeral 138 rides over the circular projection 107,
Is held by a holding piece 138, but the arc-shaped projection 13
When 8a gets over the circular projection 107, the holding piece 138 tries to return to the original position by the elastic force, so that the holding piece 138 holds the circular projection 107 with moderation. Then, when the finger is released, the locking piece 136a of the lock button 136 is engaged with the cutout groove 105a of the substrate 101 by the urging force of the elastic pieces 134a, 135a, the operation button 120 is locked, and the tip of the operation protrusion 136b is locked. Is in a state of protruding from the through hole 123.

The opening and closing operations of the switch 1 can be performed by repeating the above operations.

[0014]

By the way, in the conventional switch for sliding operation as described above, the engaging claw 124a of the engaging leg 124 of the operation button 120 is engaged with the engaging notch 133 of the sliding plate 130. In this way, the lower surface of the operation button 120 and the protrusion 137 of the sliding plate 130 are used to integrate the substrate 10
1 is lightly pressed and sandwiched between the sliding surfaces 1 of the substrate 101.
It is slidable with 02a as a reference plane. Therefore, if the engagement legs 124 and the protrusions 137 are uneven in size, the pressure contact force that holds the substrate 101 between the lower surface of the operation button 120 and the protrusions 137 of the sliding plate 130 becomes inappropriate. If the size of the joint leg 124 or the protrusion 137 becomes large, the pressure contact force becomes too strong and it becomes difficult to slide.
Alternatively, when the size of the projection 137 is reduced, the pressure contact force is weakened, and in some cases, rattling occurs, which causes a problem that a smooth sliding operation cannot be performed.

Further, although the pressure contact force is appropriate at the beginning, the protrusion 1 is particularly likely to be worn by long-term use.
There is also a problem in that the 37 wears and the pressure contact force decreases, and when the wear increases, rattling occurs.

[0016]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art by providing a pair of slide holes and an engaging portion at the inner edge of the slide holes and at the rim along the slide holes. A substrate having an opening having an opening, an operating portion slidably provided on the operating surface side of the substrate and having a through hole, and an engaging portion provided at the distal end of the operating portion and sliding into the slide hole. An operating body having an engaging leg that can be inserted therethrough, and an engagement portion that engages with an engaging portion of the engaging leg that is disposed on the operated surface side of the substrate and that is inserted into the slide hole and the opening. A sliding body having a locked portion that engages and disengages with a stop portion and an operation convex portion that movably penetrates the through hole, and a lock button that is biased toward the operating body side,
An elastic body that is arranged between the substrate and the sliding body and urges the sliding body away from the substrate, a contact mounting member, and the contact mounting member and the sliding body. And a fixed contact which is provided on the other one of the contact mounting member and the sliding body and which comes into contact with and separates from the movable contact.

[0017]

Since the present invention is configured as described above, when the operation button and the sliding plate are held together by both to be slidably mounted integrally, there is no relation to dimensional variation or wear of the sliding portion. Since it is possible to always maintain the holding state with a stable pressure contact force, it is possible to perform a smooth sliding operation of the integrated operation button and the sliding plate and also to maintain this smooth sliding operation for a long period of time.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The components of the switch 1 of the embodiment except the sliding plate 2, that is, the structure of the board and the operation buttons are the same as those of the above-mentioned embodiment, and therefore, the same reference numerals are used for the same parts as those of the conventional example. The description thereof will be omitted.

In FIG. 1, a sliding plate 2 as a sliding body
Has a square opening hole 3 formed in the center thereof, and the engaging leg 124 of the operation button 120 is provided at the opening edge 4 of the opening hole 3 corresponding to the slide hole 103 formed on the substrate 101. An engagement notch 5 is formed which has an engagement edge 5a as an engaged portion with which the engaging claw 124a is engaged. Two elastic pieces 6a are provided on the opening edge 6 of the opening hole 3, and two elastic pieces 7a are similarly provided on the opening edge 7.
Are formed integrally with the sliding plate 2 on one end side, and the other end side of these elastic pieces 6a and 7a is a base portion of a lock button 8 provided with locking pieces 8a as locked parts at both ends. 8
The engaging projection 8b is integrally formed with the locking piece 8a. The elastic pieces 6a and 7a allow the tip of the operation projection 8b of the lock button 8 to always protrude from the through hole 123 of the operation button 120.
It is formed in a curved shape that is slightly convex upward so as to urge the locking piece 8a in the direction of engaging the notch groove 105a of the substrate 101. Further, the width dimension of the operation convex portion 8b, that is, the dimension in the direction orthogonal to the elastic pieces 6a and 7a is set to be slightly smaller than the width dimension of the opening 104 corresponding to this width direction, and moves in the opening 104. You can do it.

A pair of elongated holes 9 are formed on the upper surface of the sliding plate 2 outside the engaging notches 5, and the elongated plate 9 has an elastic plate as an elastic body. 10 is formed integrally with the sliding plate 2. A sliding protrusion 11 that slides on the surface of the substrate 101 on the operated side is formed at the center of the elastic plate 10.

A movable contact 12 is provided on the rear surface of the sliding plate 2.
Are attached together. Further, in the drawing, the left end portion of the sliding plate 2 is provided with a pair of holding pieces 13 having an arcuate protrusion 13a at the tip end that engages and disengages with a circular protrusion 107 provided on the surface of the substrate 101 on the operated side. Has been formed. As in the conventional example, the sliding plate 2, the elastic pieces 6a and 7a, the lock button 8, the elastic plate 10 and the holding piece 13 are provided.
Is integrally formed of synthetic resin.

Further, as shown in FIG. 2, a fixed contact mounting plate 140 located below the sliding plate 2 is mounted on the substrate 101 by a screw 142 shown by a two-dot chain line,
A pair of fixed contacts 141 are fixed to the fixed contact mounting plate 140, and as the movable contact 12 slides by the sliding operation of the operation button 120, the fixed contact 141 is brought into contact with and separated from the movable contact 12 to be closed or opened. ing. A cover body 143 indicated by a chain double-dashed line is attached to the substrate 101 as in the conventional example.

The sliding plate 2 and the operation button 120 thus constructed are held by the substrate 101 and integrated to assemble the switch 1, which is similar to the above-mentioned conventional example, and the description thereof will be omitted.

In the state where the sliding plate 2 and the operation button 120 are held by the substrate 101 and integrated to form the switch 1, the sliding protrusion of the elastic plate 10 of the sliding plate 2 is assembled as shown in FIG. 11 is biased by the elastic force of the elastic plate 10,
It is in contact with the surface of the substrate 101 on the operated side with a light pressure contact force. Therefore, even if the engagement leg 124 of the operation button 120 or the sliding protrusion 11 has a dimensional variation, it can be absorbed by the elastic deformation of the elastic plate 10. For example, as shown in FIG. 3, when the dimension of the sliding protrusion 11 is larger than a predetermined dimension, the elastic plate 10 is elastically deformed and dented to absorb the variation, which affects the sliding operation of the operation button 120. You can always perform smooth slide operation. Needless to say, when the dimension of the sliding protrusion 11 is smaller than the predetermined dimension, the elastic plate 10 is elastically deformed in a convex shape to absorb the variation contrary to FIG. When the dimension of the engaging leg 124 of the 120 is varied, it is also absorbed.

Further, even when the sliding portion such as the sliding projection 11 is worn due to long-term use, the elastic plate 10 is elastically deformed into a convex shape and absorbs the amount of wear as well. Even at, the slide operation is always stable and maintained.

In the above embodiment, the elastic plate 10 having the sliding protrusion 11 is formed on the sliding plate 2, but the sliding protrusion 1
1 may be formed on the substrate 101 so as to be in contact with the sliding plate 2. Further, the elastic plate 10 on which the sliding protrusions 11 are formed does not necessarily have to be formed integrally with the sliding plate 2 or the substrate 101, and can be formed as a separate body and fitted to one of the sliding plate 2 and the substrate 101. They may be provided by interposing them between them by inserting them, but when they are provided as a pair as in the above embodiment, there is an advantage in that they are easy to assemble. In the case where only the plate 10 is damaged, only the elastic plate 10 needs to be replaced, and there is no need to replace the entire sliding plate 10, which is advantageous in terms of economy.

In the above embodiment, the sliding protrusion 11
Although the number is one, it may be plural, and even if plural, it is elastically supported by the elastic plate 10 so that the frictional resistance does not increase so much and does not affect the sliding operation. . Further, the elastic plate 10 is formed in an arch shape and formed on either the substrate 101 or the sliding plate 2 or as a separate body, and the sliding plate 2 and the substrate 101 are formed.
Is provided between the engaging legs 12 of the operation button 120 so as to urge the sliding plate 2 away from the substrate 101.
When the locking claw 124a of No. 4 is engaged with the engaging edge 5a of the elastic plate 10 so that the dimensional variation of the engaging legs 124 and the like can be absorbed, the sliding protrusion 11 is not always necessary. Absent.

Further, in the above embodiment, the movable contact 139
Is provided on the sliding plate 2, and the fixed contact 141 is fixed at the fixed contact mounting side 1
Although provided on 40, they may be provided on the opposite sides. Further, although the switch 1 is described as a single unit in the above-described embodiment, when the switch 1 is used in a small electric device, the substrate 101 can be integrated with the case forming the casing of the small electric device, that is, can be shared.

Next, a case where the switch of the above embodiment is used for an electric shaver as a small electric device will be described with reference to FIG.

An outer blade 22 is detachably provided on the main body 21 of the electric razor 20 so as to cover an unillustrated reciprocating inner blade, and the inner blade 22 is driven in the main body 21 although not shown. A drive means, a battery for supplying electric power to the drive means, and a printed wiring board 23 having a control circuit for controlling the drive of the drive means are provided. The main body case 21a of the main body 21 is divided into two cases 21b and 21 that are integrated with each other.
After the drive means, the battery and the wiring board 23 are positioned and arranged in one case 21b by a positioning means (not shown), the other case 20c is aligned and shown in the case 21b. Assemble the main body 21 by attaching with screws.

By the way, when using the switch 1 of the above-mentioned embodiment for the electric shaver 20, the substrate 101 of the switch 1 of the above-mentioned embodiment is mounted on the case 21c of the main body 21.
Except that it is integrally formed with the printed circuit board 23 and the fixed contact mounting plate 140 of the switch 1 of the above-described embodiment. This is the same as the switch 1 in the embodiment. Therefore, in the following description, the names and reference numerals of the board 101 are replaced with the names and reference numerals of the case 21c, and the fixed contact mounting plate 140 is replaced with the printed wiring board 23. The parts will be described using the same reference numerals.

A sliding surface 10 is provided on the outer wall of the case 21c.
A rectangular concave portion 102 having 2a is provided, and the rectangular concave portion 102 has the same structure as the substrate 101 of the above-described embodiment, and includes a slide hole 103 (not shown) and an opening 1.
04, a notch groove 105a is formed, and a circular protrusion 107 is provided on the back surface thereof. Although not shown, the printed wiring board 23 is provided with fixed contacts similar to the fixed contacts 141 of the above-described embodiment that come into contact with and separate from the movable contact 12. Incidentally, reference numeral 24 in the drawing is a display showing the operation direction of the switch. The configuration of the other parts is the same as that of the above-mentioned embodiment, and therefore its explanation is omitted.

Next, the incorporation of the switch 1 into the main body 1 will be described. First, the rectangular concave portion 10 of the case 21c is formed on the case 21c in the same manner as in the above embodiment.
The case 21c is sandwiched between the operation buttons 120 and the sliding plate 2
Are integrated and attached to prepare. Then, as described above, the driving means, the battery and the wiring board 23 are positioned and incorporated in the case 21b by the positioning means (not shown), and then the case 21c is attached to the case 21b. At this time, the movable contact 12 of the sliding plate 2 is brought into contact with and separated from the fixed contact (not shown) according to the sliding operation of the operation button 120. In this way, the switches 1 are simultaneously assembled by connecting the two cases 21b and 21c and assembling the main body case 21a.

In the electric shaver, although the fixed contact mounting plate 140 is not shown in the figure, it is pre-positioned on the case 21b side for convenience of electrical connection with the driving means.
The case 21c is attached, and the case 21b has the function of the cover body 143.

The operation of the electric razor thus configured will be described. In the state shown in FIG. 4, the operation button 120 is located at the first position, and the switch is open at this position, and the sandwiching piece 13 has the circular protrusion 1
The operation button 120 is locked by sandwiching 07, and the driving means (not shown) is stopped. Next, in the case of shaving, when the operation button 120 is slid upward to the second position in the figure, the movable contact 12 comes into contact with the fixed contact (not shown), and the switch 1
Is closed, and the inner blade (not shown) is reciprocally driven by the driving means to shave. During the sliding operation, the circular arc-shaped projection 13a of the holding piece 13 is disengaged from the circular projection 107 with moderation. Then, when the shaving is completed, the operation button 120 may be slid to return it to the first position to open the switch.

In the electric shaver, since the board 101 is commonly used as the case 21c and the fixed contact mounting plate 140 is also commonly used as the printed wiring board 23, the number of parts can be reduced and the number of parts can be reduced. Therefore, the number of assembling steps can be reduced.

Needless to say, the switch 1 can be applied to small electric equipment other than the electric razor.

[0038]

Since the present invention is constructed as described above,
When the board is held by both the operation button and the sliding plate, and the board is slidably attached, the holding state can always be maintained with a stable pressure contact force regardless of variation in dimensions or wear of the sliding part. It is possible to perform a smooth sliding operation of the integrated operation button and the sliding plate and to maintain the smooth sliding operation for a long period of time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a switch of the present invention.

FIG. 2 is a partial cross-sectional view of the above embodiment.

FIG. 3 is a partial cross-sectional view showing a contact state between an elastic plate of the sliding plate and the substrate of the above-described embodiment.

FIG. 4 is a diagram when the switch of the above embodiment is used for an electric shaver, (B) is a cross-sectional view of a switch mounting portion, and (A) is a cross-sectional view taken along line XX of (B). The figure.

FIG. 5 is an exploded perspective view of an example of a conventional switch.

FIG. 6 is a partial sectional view of the conventional switch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 switch 2 sliding plate (sliding body) 3 opening hole 5a locking edge (showing engagement portion) 8 lock button 8a locking piece (showing engagement portion) 8b operation projection 10 elastic plate (elastic body) 12 movable contact 101 substrate 103 slide hole 104 opening 120 operation button (operating body) 124 engaging leg 124a locking claw (engaging portion) 141 fixed contact

Claims (1)

[Claims] 1. A pair of slide holes, a substrate located inside the slide holes and having an opening having a locking portion at an edge along the slide holes, and a sliding face on the operation surface side of the substrate. An operating body that is movably provided and has a through hole, and an operating body that has an operating portion that is provided in the operating portion and that has an engaging portion at the tip end and slidably inserts into the slide hole; The engaging portion of the engaging leg that is disposed on the surface side and is inserted into the slide hole engages with the engaging portion, the engaged portion that engages with and disengages from the engaging portion of the opening, and is movable to the through hole. A sliding body having a penetrating operation convex portion and a lock button biased toward the operating body, and a sliding member arranged between the substrate and the sliding body, and arranged to separate the sliding body from the substrate. Urging elastic body, contact mounting member, the contact mounting member and the sliding Switch comprising: the movable contact provided in one, and a fixed contact approaching and moving away from said movable contact provided on the other of said contact mounting member and the sliding body with.