JP4148701B2 - Slide switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide switch that is switched on and off by a slide operation, and more particularly to a slide switch that includes a latch mechanism that maintains a state of being switched on and off and that can be energized with a relatively large current. About.
[0002]
[Prior art]
As a slide switch with a latch mechanism, there has conventionally been known a structure in which a steel ball that is always elastically biased or a leaf spring having a locking portion is reciprocated integrally with a slider that is an operation member. Yes. In this type of slide switch, when the slider moves to a predetermined position, the steel ball or the locking portion enters and locks into a recess provided in advance on a fixed member such as a case, whereby the slider can be moved. Being regulated.
[0003]
However, the latch mechanism described above is suitable for a slide switch of a type in which a slider attached to a slider is slid on a flat surface on which a contact pattern is formed to switch on and off. It is not suitable for slide switches that switch on and off by swinging the plate. In other words, in the case of a slide switch with a large energization amount, a configuration in which the conductor plate is brought into contact with and separated from the fixed contact by swinging the conductor plate as the slider moves is generally used. In the conventional product, the on position of the slider is on the inclined surface of the conductor plate, and when the operating force is removed, the slider is guided to the inclined surface and automatically returns to the off position. It is difficult to reliably hold the slider in the on position with a latch mechanism that engages and disengages the leaf spring with the recess.
[0004]
Therefore, conventionally, a slide switch with a latch mechanism has been proposed in which a conductor plate having an extremely gentle inclination is used and the posture of the conductor plate changes like a seesaw between an on state and an off state. Such a conventional proposal is a slide switch that switches on and off by swinging a conductor plate via a slider, but can reliably hold the slider in both the on position and the off position.
[0005]
[Problems to be solved by the invention]
Although the above-mentioned conventional proposal has an advantage that it can be kept on / off without complicating the structure of a slide switch that can be supplied with a relatively large current, the slider moves on the swing fulcrum during operation. Since the posture of the conductor plate becomes almost horizontal when passing, there is a problem that the slider is likely to stop at an intermediate position (between the on position and the off position) on the swing fulcrum and the operability is poor. . In the case of a conventional slide switch having a normal conductor plate, a dedicated latch mechanism is provided outside to hold the slider on the inclined surface of the conductor plate and acting on the off-position. Since it must be attached, the structure must be complicated.
[0006]
The present invention has been made in view of such a state of the art, and its purpose is to provide a latch mechanism that can maintain a state of being switched on and off without deteriorating operability and complicated structure. It is to provide a slide switch.
[0007]
[Means for Solving the Problems]
In order to achieve the above-described object, a slide switch of the present invention includes a case having a bottom wall, a support contact member and a fixed contact member exposed on the bottom wall of the case, and a contact portion between the support contact member. A conductor plate slidably disposed on the bottom wall as a swing fulcrum, a drive body slidably disposed on the conductor plate, and elastically biasing the drive body toward the conductor plate A spring member, and a slider that holds the drive body and the spring member and is slidable along the longitudinal direction of the conductor plate, and is mounted on the conductor plate in an inclined posture on the support contact member. a first inclined portion whose upper end Ru is formed over the support contact member, a second inclined portion which is formed to extend with a gradient opposite from the upper end of the first inclined portion, the first The fixed contact is formed to extend from the two inclined portions. A movable contact portion capable of contacting and separating from the material, and when the driving body is positioned at a lower end portion of the first inclined portion, the movable contact portion of the conductor plate is separated from the fixed contact member, and the slider When the drive body is slid from the lower end portion of the first inclined portion to the second inclined portion, the conductive plate rotates and the movable contact portion comes into contact with the fixed contact member. It was configured as follows.
[0008]
In the slide switch having such a configuration, since the first inclined portion has an inclination that does not become a horizontal posture on the swing fulcrum even when the conductor plate swings, the slider stops on the swing fulcrum during operation. There is no worry about it. Further, when the driving body is located at the lower end of the first inclined portion, the movable contact portion of the conductor plate is separated from the fixed contact member and is in an off state. Then, the slider is operated to slide the driving body. When sliding from the lower end portion of the first inclined portion to the second inclined portion in the off state , the conductive plate rotates and the movable contact portion comes into contact with the fixed contact member, so that the support contact member and the fixed contact member In this on state, no force toward the off position is applied to the driving body on the second inclined portion, so that the slider moves along the operation direction. By appropriately determining the range, the slider can be reliably held at the on position.
[0009]
In addition, since the bent portion is formed between the first inclined portion and the second inclined portion of the conductor plate, when the slider is slid in the reverse direction in the on state, the driving body on the second inclined portion After overcoming the bent portion, it smoothly slides on the first inclined portion to the lower end portion, and the conductive plate rotates and the movable contact portion separates from the fixed contact member during this sliding, Turns off. Therefore, at the time of such a slide operation, the slider is smoothly guided to the off position after the driving body gets over the bent portion of the conductor plate.
[0010]
In the above-described slide switch, the second fixed contact member fixed to the case and exposed on the bottom wall is disposed on the side opposite to the fixed contact member side with respect to the support contact member, If the conductive plate has a second movable contact portion extending from the lower end portion of the first inclined portion and capable of contacting and separating from the second fixed contact member, the conductive plate is interposed via the conductive plate in the off state. Thus, the support contact member and the second fixed contact member are brought into conduction, and the conductor plate can be separated from the second fixed contact member in the ON state.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a slide switch according to an embodiment of the present invention, FIG. 2 is a sectional view showing an off state of the slide switch, and FIG. It is sectional drawing which shows the ON state of a slide switch.
[0012]
The slide switch shown in these figures includes a case 1 made of synthetic resin, a support contact member 2 disposed on the bottom wall 1a of the case 1, first and second fixed contact members 3 and 4, A plurality of terminals 5 led out from the contact members 2 to 4 and disposed on the side wall of the case 1, and a conductor plate 6 made of a highly conductive metal material swingably disposed on the bottom wall 1a of the case 1; A synthetic resin driving body 7 slidably disposed on the conductor plate 6, a coil spring 8 that elastically biases the driving body 7 toward the conductor plate 6, and a longitudinal direction of the conductor plate 6. A slider 9 made of a synthetic resin that can slide horizontally along the axis and a cover 10 made of a thin metal plate attached to the case 1 with an opening 10a for projecting the slider 9 are mainly constituted.
[0013]
The case 1 is a bottomed box-shaped molded product in which a side wall is erected around the bottom wall 1a, and the contact members 2 to 4 and the terminals 5 are integrated with the case 1 by an insert molding technique. The contact members 2 to 4 are exposed in a row on the bottom wall 1 a of the case 1, and the support contact member 2 is disposed between the first fixed contact member 3 and the second fixed contact member 4. ing. Further, projecting portions 1b are formed on the opposing inner walls on the long side of the case 1, and these projecting portions 1b have an arcuate upper portion.
[0014]
The conductor plate 6 has a first inclined portion 6a that is always mounted on the support contact member 2 in an inclined posture, and a first inclined portion 6a extending from the upper end portion of the first inclined portion 6a with a reverse gradient. Two inclined portions 6b, a convex bent portion 6c that is a boundary between the first and second inclined portions 6a and 6b, and a first fixed portion that extends from the second inclined portion 6b to one end side. A first movable contact portion 6d that can contact and separate from the contact member 3 and a second movable contact portion 4 that extends from the lower end portion of the first inclined portion 6a to the other end side and can contact and separate from the second fixed contact member 4. Movable contact portion 6e, and a concave bent portion 6f that is a boundary portion between the first inclined portion 6a and the second movable contact portion 6e are provided. The conductor plate 6 can swing around the contact point with the support contact member 2 as a swing fulcrum P. When the conductor plate 6 shown in FIG. 2 is rotated in one direction, the conductor plate 6 assumes a posture as shown in FIG. 2 is rotated in the opposite direction, the posture shown in FIG. 2 is obtained. In addition, four protrusions 6g are formed on both sides in the short direction of the conductor plate 6 with a concave bent portion 6f interposed therebetween, and the protrusion 6g is engaged with the protrusion 1b of the case 1 to swing. Sometimes, the conductor plate 6 is regulated so as not to be displaced in the longitudinal direction.
[0015]
The driving body 7 and the coil spring 8 are incorporated in the hollow portion 9 a of the slider 9 and are held by the slider 9, and the driving body 7 is always in elastic contact with the conductor plate 6. The slider 9 protrudes upward from the opening 10a of the cover 10, and the slider 9 can reciprocate between one end and the other end in the longitudinal direction of the opening 10a. When the slider 9 is reciprocated in the opening 10a, the driver 7 slides on the conductor plate 6 while the coil spring 8 is expanded and contracted.
[0016]
As shown in FIG. 2, the slide switch configured as described above is kept in the OFF state when the slider 9 is positioned at one end in the longitudinal direction in the opening 10a. As shown in FIG. When it is located at the other end in the longitudinal direction in the opening 10a, it is kept on. Then, the slider 9 shown in FIG. 2 can be switched from OFF to ON by sliding it to the left in FIG. 2, and the slider 9 shown in FIG. 3 can be switched from ON to OFF by sliding to the right in FIG. You can switch.
[0017]
When the slide switch is in the OFF state shown in FIG. 2, the driving body 7 is positioned on the concave bent portion 6f of the conductor plate 6, and the slider 9 is positioned at the limit of the moving range and moves rightward in the drawing. Is regulated. At this time, the conductor plate 6 is supported by the first inclined portion 6a and the second movable contact portion 6e being in contact with the support contact member 2 and the second fixed contact member 4, respectively. , 4 are electrically connected via the conductor plate 6, but the first movable contact portion 6d is separated from the first fixed contact member 3, so that the support contact member 2 and the first fixed contact member 3 are connected to each other. Is in a non-conductive state. Accordingly, the slider 9 shown in FIG. 2 does not slide by itself unless an operating force is applied, and the conductor plate 6 is also held in a stable posture in the off state.
[0018]
When the off-state slide switch is turned on, the slider 9 shown in FIG. 2 is slid leftward. As a result, the drive body 7 slides on the first inclined portion 6a of the conductor plate 6 toward the convex bent portion 6c, so that when the drive body 7 passes over the swing fulcrum P, the conductor plate 2 rotates counterclockwise in FIG. 2, and the drive body 7 gets over the convex bent portion 6c due to inertia and shifts to the ON state shown in FIG. That is, immediately after the second movable contact portion 6e is separated from the second fixed contact member 4, the first movable contact portion 6d abuts on the first fixed contact member 3, and the support contact member 2 and the first The fixed contact member 3 is electrically connected via the conductor plate 6 and the driving body 7 is positioned on the second inclined portion 6b, and the slider 9 is slid to the limit of the moving range. In this state, a force to descend along the second inclined portion 6b acts on the driving body 7, but the slider 9 that has reached the limit of the moving range is restricted from moving leftward in the drawing, so eventually The slider 9 shown in FIG. 3 does not slide by itself unless an operating force is applied, and the conductor plate 6 is also supported by the support contact member 2 and the first fixed contact member 3 so that the on state is stable. Maintained posture.
[0019]
Further, when the on-state slide switch is turned off, the driver 7 on the second inclined portion 6b can move over the convex bent portion 6c and move onto the first inclined portion 6a. Is slid rightward. Thereby, after the drive body 7 gets over the convex bending part 6c, it slides smoothly on the 1st inclination part 6a toward the concave bending part 6f, and the driving body 7 is a rocking | fluctuation fulcrum. When passing over P, the conductor plate 6 rotates clockwise in FIG. 3, and the first movable contact portion 6 d is separated from the first fixed contact member 3. Therefore, the conduction between the support contact member 2 and the first fixed contact member 3 is interrupted, and the driving body 7 is smoothly guided to the concave bent portion 6f, and returns to the off state shown in FIG.
[0020]
As described above, in the slide switch according to the present embodiment, the conductor plate 6 is provided with the first inclined portion 6a and the second inclined portion 6b, and as shown in FIGS. Even if it moves, the first inclined portion 6a does not become horizontal on the swinging fulcrum P, so that the problem that the slider 9 stops on the swinging fulcrum P does not occur, and good sliding operation can always be performed. The slide switch not only reliably holds the slider 9 in the predetermined off position in the off state shown in FIG. 2, but also the drive body 7 is positioned on the second inclined portion 6b in the on state shown in FIG. Therefore, the slider 9 can be securely held at a predetermined ON position, and as a result, a highly reliable latch mechanism is realized without complicating the structure.
[0021]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0022]
A slide switch that swings a conductor plate with a contact point with the support contact member as a swing fulcrum and contacts and separates from the fixed contact member, and is mounted on the conductor plate in an inclined posture on the support contact member. a first inclined portion whose upper end Ru is formed over the support contact member, a second inclined portion which is formed to extend with a gradient opposite from the upper end of the first inclined portion, the first Since the movable contact portion extending from the two inclined portions and movable toward and away from the fixed contact member is provided, the first inclined portion is horizontally placed on the swing fulcrum even when the conductor plate swings. Therefore, there is no problem that the slider stops on the swing fulcrum during operation, and good operability can always be expected. In addition, the driving body held by the slider and elastically contacting the conductor plate is positioned near the lower end of the first inclined portion in the off state, and is positioned on the second inclined portion in the on state, thereby causing the slider to move. Since it can be reliably held not only in the off position but also in the on position, a highly reliable latch mechanism can be realized without complicating the structure.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a slide switch according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing an off state of the slide switch.
FIG. 3 is a cross-sectional view showing an ON state of the slide switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 1a Bottom wall 2 Supporting contact member 3 1st fixed contact member 4 2nd fixed contact member 6 Conductor plate 6a 1st inclination part 6b 2nd inclination part 6c Convex bending part 6d 1st movable contact Portion 6e second movable contact portion 7 driver 8 coil spring 9 slider 10 cover P swing fulcrum

Claims (2)

A case having a bottom wall, a support contact member and a fixed contact member exposed on the bottom wall of the case, and a contact portion with the support contact member are swingably disposed on the bottom wall. A conductive plate, a driving body slidably disposed on the conductive plate, a spring member that elastically biases the driving body toward the conductive plate, and holding the driving body and the spring member. A slider slidable along the longitudinal direction of the conductor plate,
To the conductor plate, the loaded always inclined posture on the supporting contact member and the first inclined portion whose upper end Ru is formed over the support contact member, opposite from the upper end of the first inclined portion A second inclined portion formed extending in a direction gradient, and a movable contact portion extending from the second inclined portion and capable of contacting and separating from the fixed contact member;
When the driving body is positioned at the lower end of the first inclined portion, the movable contact portion of the conductor plate is separated from the fixed contact member, and the slider is slid to operate the driving body. The slide switch is configured such that when the sliding is performed from the lower end of the inclined portion to the second inclined portion, the conductive plate rotates and the movable contact portion comes into contact with the fixed contact member.   The second fixed contact member fixed to the case and exposed on the bottom wall is disposed on the opposite side of the support contact member from the fixed contact member side according to claim 1. The slide switch is characterized in that a second movable contact portion is formed on the conductor plate so as to extend from the lower end portion of the first inclined portion and can be brought into contact with and separated from the second fixed contact member.

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