JPH07320590A - Switch device having self resetting function - Google Patents

Abstract

PURPOSE:To provide a switch device having a self resetting function, capable of miniaturizing and thin forming a switch device total unit, attaining reducing a cost, improving also reliability, and capable of effectively utilizing space when built in a set by a customer. CONSTITUTION:A solenoid 22 is juxtaposed in one side surface of an AC switch part 33, and a drive cam 23, with the one end part driven by this solenoid 22, is turnably journalled to a frame 20 of the AC switch part 33, also to provide a mountain-shaped sloped surface 25a in the other point end part 24 of the drive cam 23. By turning the drive cam 23, its sloped surface 25a comes into contact with a single pin 27, positioned in a lock cam stop part 30, from the lengthwise direction orthogonal to a direction of moving the single pin 27, and by the sloped surface 25a of the drive cam 23, the single pin 27 is laterally moved so as to be dislocated from the lock cam stop part 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly used as a power switch for televisions, monitors and the like, and is a push type of a type requiring a self-reset (self-interruption) function from the viewpoint of energy saving, safety and the like. The present invention relates to a switch device applicable to all switches, and more particularly, to a structure of a lock release portion (auto-off mechanism) in a push-type switch.

[0002]

11 to 13 show the structure of a conventional switch device having a self-recovery (auto-off) function and the structure of a lock release mechanism, and FIGS. 11 (a) and 11 (b) show the self-recovery function. 1 is a plan view and a front view of a switch device having
2 is an explanatory view showing the outline of the internal structure of the switch device having the self-recovery function, and FIG. 13 is an explanatory view showing the switch device having the self-recovery function with the slide member removed.

In these figures, 1 is a solenoid, 2
Is a lever, 3 is a case, 4 is a fulcrum, 5 is a pin, 6 is a protruding portion, 7 is a heart cam, 8 is an iron core, 9 is a coil spring,
10 is a frame, 11 is a slide member, A is a solenoid part,
B is an AC switch section, and C is a DC switch section.

In this type of auto-off switch device, when the slide member 11 is pushed in, the tamping pin 5 is locked by the locking portion of the heart cam 7 at a predetermined push-in position and the slide member 11 remains pushed in. The section B and the DC switch section C are turned on.
The auto-off mechanism described below releases this on-state.

The solenoid 1 is positioned at the rear of the entire conventional auto-off switch device, the lever 2 engaged with the solenoid 1 is attracted (in the direction of arrow a), and the lever 2 serving as the fulcrum 4 of the case 3 is rotated (arrow). b direction). At this time,
The protrusion 6 at the tip of the lever rotates in the direction of arrow c, and the protrusion 6 at the tip of the lever causes the tamping pin 5 on the front of the switch to move.
Push from the side to release the tamping pin 5 from the heart cam 7 and unlock it.

In the conventional auto-off switch device, the lever 2 for unlocking is held at the regular position (position shown in FIG. 12), and the lever 2 (iron core 8) sucked by the solenoid 1 is kept at the regular position. The member having a role of returning to the position of was constituted by the coil spring 9 (or the leaf spring).

[0007]

However, the conventional switch device having the self-recovery function has the following problems. Since the large solenoid 1 is arranged at the rear of the switch by using the large solenoid 1, the switch device becomes large in size, and the space factor of depth and height is poor, so that the switch device set cannot be downsized or thinned. . Also,
Since the solenoid 1 is large, the cost is high.

The case 3 for fixing the switches (A, B) and the solenoid 1 is also large, and in order to increase the strength of the plastic material so that it can withstand the strength, the wall thickness must be increased, and the space factor deteriorates.

Since the lock state is released by pushing the side surface of the tampon 5 with the lever 2, the lever 2 is stopped outside the range of movement of the tampin 5. Therefore, the moving stroke of the lever 2 needs to be large, and the solenoid 1 must be made large, which causes the above-mentioned problem (because the lever 2 needs a force (suction force) to push the tampon 5). .

As described above, there are problems in use space (size of switch) and cost.

Further, in the above-mentioned conventional structure, when the coil spring 9 (or the leaf spring) is assembled, one side of the coil spring 9 is fixed and then the opposite end of the coil spring 9 is fixed while pressing this portion so as not to come off. Therefore, there is a problem that it is difficult to install.

A first object of the present invention is to reduce the size and thickness of the switch device as a whole, thereby reducing the cost.
It is an object of the present invention to provide a switch device having a self-recovery function, which has improved reliability and can effectively utilize the space at the time of assembling a set at a customer.

A second object of the present invention is to provide a switch device in which the assembling property of the spring member is improved and the efficiency is improved, and the incorporated wire spring has a self-recovery function in which the wire spring is hard to come off.

A third object of the present invention is to reduce the number of parts and the cost without damaging the normal switch operation and the lock releasing function at the time of starting the solenoid even without the spring member for returning the drive cam. It is to provide a switch device having a self-recovery function that can be performed.

[0015]

The first object is a self-recovery function of releasing a locked state by moving a tampon locked by a lock cam locking portion by a drive cam driven by a suction force of a solenoid. In the switch device having the above, the solenoids are arranged side by side on one side of the switch body, and the drive cam whose one end is driven by the solenoid is rotatably supported by the frame body of the switch body and A mountain-shaped inclined surface is provided at the tip of the other end of the cam, and when the drive cam is rotated, the inclined surface of the drive cam is aligned with the moving direction of the tamping pin on the tampon located at the lock cam engaging portion. By the first means that abuts from the orthogonal longitudinal direction, and the sloping surface of the drive cam moves the tamping pin laterally to release it from the lock cam engaging portion. It is made.

The second object is a switch device having a self-recovery function for returning the drive cam driven by the attraction force of the solenoid to the initial position, and the return mechanism is composed of a wire spring bent in a substantially V shape. Achieved by a second means in which hook-shaped hook portions are formed at both ends of the wire spring, which are inserted and fixed to the locking portion of the drive cam and the locking portion of the frame to which the solenoid is fixed. To be done.

A third object of the present invention is to provide a switch device having a self-recovery function for returning a drive cam driven by a suction force of a solenoid to an initial position.
This is achieved by the third means which is composed of a tamping pin that is locked to the lock cam of the switch body and a mountain-shaped inclined surface that is provided at the tip of the driving cam that is driven by the movement of this tamping pin.

[0018]

In the first means, since the drive cam is not positioned in the movement direction of the tamping pin, the movement stroke of the drive cam can be made small, and a solenoid suction force that is not so large is required. The size of the solenoid can also be reduced.

In the second means, the assemblability of the spring member is improved, the efficiency is improved, and the incorporated wire spring is less likely to come off.

In the third means, when the drive cam is attracted by the solenoid and is not returned, the force of the return spring of the switch body is used to move the tamping pin to move the tip of the drive cam. Since the drive cam is pushed back to the inclined portion and pushed back, even if there is no spring member for returning the drive cam, the normal switch operation and the lock release function at the time of starting the solenoid are not impaired.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view of a switch device having a self-recovery function according to an embodiment of the present invention, and FIG. 2 is (a), (b),
FIG. 3C is a plan view, a left side view, and a front view of a switch device having a self-recovery function according to an embodiment of the present invention, and FIG.
4 is an explanatory view showing a state of a switching device having a self-recovery function according to an embodiment of the present invention when driving a solenoid, and FIG. 5 is a switch device having a self-recovery function according to an embodiment of the present invention. Explanatory diagram showing the state at the normal time, FIG. 6
(a), (b) is an explanatory view showing a locked position of the switch device having the self-recovery function of the embodiment according to the present invention and a position immediately after releasing the tamping, and FIGS. 7 (a) and (b) show the present invention. Explanatory view showing the slide return position and the slide return position (OFF position) of the switch device having the self-return function of the embodiment according to
FIG. 8 is an explanatory diagram showing a slide pushing process of a switch device having a self-recovery function according to an embodiment of the present invention, and FIG. 9 is an explanatory diagram of a wire spring of a switch device having a self-recovery function according to an embodiment of the present invention. 10 (a), 10 (b) and 10 (c) are explanatory views showing a process of assembling the wire spring of the switch device having the self-recovery function according to the embodiment of the present invention.

In these figures, 20 is a frame, 21 is a slide member, 22 is a solenoid, 23 is a drive cam, and 2 is a drive cam.
4 is a cam tip, 25a and 25b are inclined surfaces, 26 is a cam projection (fulcrum), 27 is a tampon, and 27a is a tampin.
7 is a tamping fulcrum, 27b is a tamping operation end of the tamping 27, 29 is a heart cam portion, 30 is a lock cam engaging portion,
31 is a wire spring, 32 is an iron core, 33 is an AC switch part, 3
Reference numeral 4 is a DC switch portion, 35 is a solenoid portion, 36 is a locking portion of the drive cam 23, 37 is a locking portion of the frame 20, and 38 is a dogleg-shaped hook portion provided at both ends of the wire spring 31. .

The frame 20 is formed by pressing a metal plate (77A). AC switch unit 3 by frame 20
3 and the solenoid part 35 are covered and integrated.

The slide member 21 is provided slidably in the left-right direction (in FIG. 4).
By pressing 1, the switches of the AC switch unit 33 and the DC switch unit 34 (not shown) are turned on. The slide member 21 is biased toward the initial position (the position where the slide member 21 is at the leftmost position) by a spring member (not shown).
When the slide member 21 is in this initial position, the switches of the AC switch unit 33 and the DC switch unit 34 are off.

Further, the slide member 21 is provided with a heart cam portion 29. As shown in FIG. 6 and the like, the heart cam portion 29 has a recess 29a formed in the upper surface of the slide member 21, and the projection-like lock cam engaging portion 3 is formed at the center of the recess 29a.
0 is provided. Then, the recess 29a around the lock cam engaging portion 30 is provided with a tamping operation end 27b of the tamping 27.
In this embodiment, the slide member 21 is pushed in by moving counterclockwise, and by locking the tamping operation end 27b of the tampin 27 to the lock cam locking portion 30 as described later. It is designed to be locked in the state.

The tampon 27 has both ends of a round bar bent at right angles in opposite directions, and one end thereof serves as the tampin fulcrum 27a.
The other end is the tamping operation end 27b. The tamping fulcrum 27a is inserted into a hole (not shown) in the frame body or the case, so that the tampin 27 has a tamping operative end 27b swingable about the tamping fulcrum 27a.

The solenoid 22 is arranged in parallel on one side of the AC switch section 33 by the frame body 20.
A drive cam 23 driven by is pivotally supported on the frame body 20 so as to be rotatable around the cam protrusion 26.

A cam projection 26 projects from the center of the drive cam 23 and is inserted into the hole 20a of the frame body 20 and rotatably supported. Further, one end of the drive cam 23 is connected to one end of the drive cam 23 by engaging one end of the drive cam 23 with the tip of the iron core 32 of the solenoid 22, and by exciting the solenoid 22 to drive the iron core 32, the iron core 32 is moved. Drive cam 23 in conjunction
Is driven to rotate about the cam protrusion 26. The other end of the drive cam 23 is arranged near the heart cam portion 29 of the slide member 21, and the drive cam 2
The tip end 24 of No. 3 is provided with angled slopes 25a and 25b. The drive cam 23 passes through between the AC switch portion 33 and the frame body 20 and is incorporated into the switch.
When the solenoid 22 attached to the side surface of the drive cam 23 attracts the drive cam 23, the drive cam 23 is simultaneously pulled, and the cam protrusion 26 of the drive cam 23 serves as a fulcrum to rotate the drive cam 23. At this time, the inclined surface 25a of the distal end portion 24 of the drive cam 23 that has been rotated hits the tamping operation end 27b in the longitudinal direction of the tampon 27 (the direction orthogonal to the moving direction of the tampin 27), and the distal end portion 24 of the drive cam 23 moves. The tamping operation end 27b is guided and moved in the lateral direction (downward in the drawing) by the inclined surface 25a, and disengages from the lock cam locking portion 30 of the heart cam portion 29 to unlock.

As shown in FIG. 9, the wire spring 31 constituting the return mechanism has the engaging portions 36 of the drive cam 23 and the frame body 20 engaged with each other at both ends thereof which are formed of a wire material and bent and formed into a substantially V shape. There are provided hooks 38, 38 having a V-shape that engage with the stoppers 37, respectively. The wire spring 31 is inserted between the locking portion 36 of the drive cam 23 and the locking portion 37 of the frame body 20 as will be described later, and is assembled and fixed, whereby the drive cam 23 is held at the regular position and the solenoid is also provided. The drive cam 23 (iron core 32) sucked by 22 is returned to the normal position.

The solenoid portion 35 is constructed as a unit independent of the switch body, and the solenoid portion 35 is incorporated later.

Due to the relationship between the mounting position of the solenoid 22 and the lock release (auto-off mechanism) structure, the solenoid 22 is mounted on the side surface of the switch, and the solenoid 22 thinner than the switch is used. Further, for fixing the solenoid 22 and the switch, the frame body 20 is made of a metal plate to further reduce the thickness.

Next, the work of assembling the wire spring 31 will be described. As shown in FIG. 10A, the wire spring 31 is applied to the locking portion 36 of the drive cam 23 and the locking portion 37 of the frame body 20, and as shown in FIG. As shown in FIG. 10C, the wire spring 31 is inserted and incorporated while being pressed and contracted inward along the space between the locking portions 36 and 37. The built-in wire spring 31 imparts a clockwise urging force to the drive cam 23 about the cam protrusion 26, so that the drive cam 23 is held at a regular position and is attracted by the solenoid 22. The drive cam 23 (iron core 32) is returned to the normal position.

Next, the operation of the above-described embodiment will be described mainly with reference to FIGS.

When the slide member 21 is pushed in,
The lock position is reached (see FIGS. 6A and 5). In this state, the tamping operation end 27b of the tampon 27 is locked by the lock cam locking portion 30 and the slide member 21 is locked at the pushing position. In the state of FIG. 6 (a),
The solenoid 22 is in a non-excited state and is held by the wire spring 31 at a regular position (a position where it does not contact the tamping operation end 27b of the tamping 27).

When the self-recovery (auto-off) function is operated, the solenoid 22 is excited and the attraction force of the solenoid 22 causes the drive cam 23 to move through the iron core 32 to the cam protrusion 2.
It is rotated counterclockwise around the point 6. Then, as shown in FIG. 6B and FIG. 4, the tip end portion 24 of the drive cam 23 moves substantially along the sliding direction of the slide member 21, and the inclined surface 25 a of the drive cam 23 causes the tamping 27.
The tampon operation end 27b is contacted with the inclined surface 25a, and the tampon operation end 27b is moved in the direction (downward in the drawing) to be disengaged from the lock cam locking portion 30 to release the lock. It should be noted that the tamping pin 27 only rotates about the tamping fulcrum 27a and does not move in the left-right direction. Further, the solenoid 22 is not excited when the lock is released.

By this unlocking, as shown in FIG. 7A, the slide member 21 is slid to the left in the figure by the urging force of the return spring member (not shown).

When the slide member 21 slides to the left, the tamping operation end 27b of the tampin 27 is moved upward in the drawing by the heart cam portion 29, and the sloping surface is moved as the tamping operation end 27b of the tampin 27 moves. The drive cam 23 is connected to the cam protrusion 26 via the 25a.
It can be rotated in the clockwise direction around. And
When the return of the slide member 21 is completed, as shown in FIG. 7B, the tamping operation end 27b of the tampon 27 reaches a position slightly higher (in the drawing) than the position in the lock position by the heart cam portion 29, and in this state. Then, the tamping operation end 27b of the tamping 27 is a mountain-shaped inclined surface 25.
It is located at the top of a, 25b. However, in FIG.
In the state of (a), the position of the tamping operation end 27b of the tampon 27 locked to the lock cam locking portion 30 is located below the tops of the inclined surfaces 25a and 25b in FIG. 6, and the inclined surfaces 25a and 25b. It is set so as to abut against the inclined surface 25a that moves the tamping operation end 27b in the unlocking direction.

When the slide member 21 is pushed again, as shown in FIG. 8, the slide member 21 slides to the right, and the tamping operation end 27b of the tampon 27 moves along the heart cam portion 29, so that the stab of FIG. The lock position shown in FIG.

In the above-described embodiment, the drive cam 23 driven by the suction force of the solenoid 22 moves the tampon 27 locked to the lock cam locking portion 30 to bring the lock state. In the switch device having the self-reset function for releasing the solenoid 22, the solenoid 22 is
This solenoid 2 is installed in parallel on one side of the C switch 33.
The drive cam 23 whose one end is driven by 2 is rotatably supported on the frame body 20 of the AC switch part 33, and the other end tip 24 of the drive cam 23 is provided with a mountain-shaped inclined surface 25a. Due to the rotation of the cam 23, the inclined surface 25 a of the drive cam 23 comes into contact with the tampon 27 located in the lock cam locking portion 30 from the longitudinal direction orthogonal to the moving direction of the tampin 27, and the inclined surface of the drive cam 23. Since the tampon 27 is moved laterally to be disengaged from the lock cam locking portion 30 by 25a, the drive cam 23 is not positioned in the moving direction of the tampin 27, so that the moving stroke of the drive cam 23 can be reduced. Therefore, it is not necessary to use such a strong solenoid attraction force.
Since the size of 2 can also be made smaller, the switch device as a whole can be made smaller and thinner, cost can be reduced, reliability can be improved, and the space for assembling at the customer's set can be effectively utilized. It also makes it easier to downsize the set.

In the above embodiment, in the switch device having the self-recovery function for returning the drive cam 23 driven by the attraction force of the solenoid 22 to the initial position,
The return mechanism is composed of a wire spring 31 bent in a substantially V shape, and both ends of the wire spring 31 have locking portions 36 of the drive cam 23.
And the locking portion 37 of the frame body 20 to which the solenoid 22 is fixed
Since the dogleg-shaped hook portion 38 that is inserted and fixed in is formed, it can be assembled in one-touch by pushing it in from the top, improving the assemblability of the spring member (wire spring 31) and improving the efficiency. The broken wire spring 31 is less likely to come off.

In the above embodiment, in the switch device having the self-return function for returning the drive cam 23 driven by the attraction force of the solenoid 22 to the initial position,
The return mechanism is the lock cam locking part 3 of the AC switch part 33.
The drive cam 23 is configured by the solenoid 22 because it is composed of the tampin 27 that is locked to 0 and the mountain-shaped inclined surfaces 25a and 25b provided at the tip of the drive cam 23 that is driven by the movement of the tampin 27. In the case where it remains sucked and does not return, the force of the return spring (not shown) for the slide member 21 of the AC switch portion 33 is used to move the tamping pin 27 and hit the inclined surface 25 a at the tip of the drive cam 23. Since the drive cam 23 is pushed back, even if there is no spring member (wire spring 31), the normal switch operation and the lock release function at the time of solenoid activation are not impaired, the number of parts can be reduced, and the cost can be reduced.

[0043]

According to the first aspect of the present invention, since the drive cam is not positioned in the moving direction of the tamping pin, the moving stroke of the drive cam can be shortened, and a solenoid suction force of such a large magnitude is required. Since the size of the solenoid can be reduced, the switch device can be made smaller and thinner, cost can be reduced, reliability can be improved, and the space for assembling at the customer's set can be effectively utilized. it can.

According to the second aspect of the present invention, the effect of improving the assembling property of the spring member, improving the efficiency, and making it difficult for the incorporated wire spring to come off can be obtained.

According to the third aspect of the invention, the force of the return spring of the switch body is utilized when the drive cam is in a state where it is not returned while being attracted by the solenoid,
The tamping pin moves and hits the inclined part at the tip of the drive cam to push it back, so even if there is no spring member for returning the drive cam, it does not impair the normal switch operation and the unlock function at solenoid activation. It is possible to achieve the effects such as reduction and cost reduction.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a switch device having a self-recovery function according to an embodiment of the present invention.

2A, 2B, and 2C are a plan view, a left side view, and a front view of a switch device having a self-recovery function according to an embodiment of the present invention.

FIG. 3 is a bottom view of FIG.

FIG. 4 is an explanatory diagram showing a state of a switching device having a self-recovery function according to an embodiment of the present invention when a solenoid is driven.

FIG. 5 is an explanatory diagram showing a normal state of the switch device having the self-recovery function according to the embodiment of the present invention.

6 (a) and 6 (b) are explanatory views showing a lock position of the switch device having the self-recovery function of the embodiment according to the present invention and a position immediately after releasing the tamping.

7 (a) and 7 (b) are explanatory views showing the slide return position and the slide return position (off position) of the switch device having the self-return function according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a slide pushing process of the switch device having the self-recovery function according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram of a wire spring of a switch device having a self-recovery function according to an embodiment of the present invention.

10 (a), (b) and (c) are explanatory views showing a process of assembling a wire spring of a switch device having a self-recovery function according to an embodiment of the present invention.

11A and 11B are a plan view, a front view, and a right side view of a conventional switch device having a self-recovery function.

FIG. 12 is an explanatory diagram showing an outline of an internal structure of a conventional switch device having a self-recovery function.

FIG. 13 is an explanatory diagram showing the switch device having the self-recovery function of FIG. 12 with the slide member removed.

[Explanation of symbols]

 20 Frame 22 Solenoid 23 Drive Cam 24 Cam Tip 25a Inclined Surface 26 Cam Protrusion 27 Tampin 29 Heart Cam 30 Lock Cam Lock 31 Wire Spring 33 AC Switch 36 Lock Cam 37 Lock of Frame 20 Stop 38 Hook

Claims (3)

[Claims] 1. A switch device having a self-restoring function for releasing a locked state by moving a tampon locked to a lock cam locking part by a drive cam driven by a suction force of a solenoid, wherein the solenoid is a switch body. Of the drive cam, one end of which is driven by this solenoid, is rotatably supported by the frame body of the switch main body.
A mountain-shaped inclined surface is provided at the tip of the other end of the drive cam, and the inclined surface of the drive cam is rotated by the rotation of the drive cam.
On the tamping pin located at the lock cam locking portion,
It has a self-recovery function, which abuts in the longitudinal direction orthogonal to the moving direction of the tamping pin and laterally moves the tamping pin by the inclined surface of the drive cam to disengage it from the lock cam locking portion. Switch device. 2. A switch device having a self-recovery function for returning a drive cam driven by a suction force of a solenoid to an initial position, wherein the return mechanism is composed of a wire spring bent in a substantially V shape. A switch having a self-returning function, characterized in that a hook-shaped hook portion is formed at both ends thereof, the hook portion being inserted and fixed to the locking portion of the drive cam and the locking portion of the frame to which the solenoid is fixed. apparatus. 3. A switch device having a self-recovery function for returning a drive cam driven by a suction force of a solenoid to an initial position, wherein a return mechanism includes a tamping pin locked to a lock cam of a switch main body, A switch device having a self-recovery function, comprising a mountain-shaped inclined surface provided at the tip of the drive cam driven by movement.