JPH0254579B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sliding electrical component that can be operated by electromagnetic functions in addition to manual operation.

2. Description of the Related Art Conventional sliding electrical components, particularly switches, as shown in FIG. 1, have been developed as being capable of both manual and electromagnetic operation.

That is, a coil 4 is installed in a coil bobbin 3 in which an iron core 2 is installed in a case 1 made of an insulator, and both ends of this coil 4 are connected to terminals 5 of the coil bobbin 3.
In addition to incorporating an electromagnet 6 connected to terminals a and 5b, a sliding body 9 that holds a movable contact piece 8 that switches conduction between fixed terminals 7 installed in the case 1 is incorporated, and the electromagnet of this sliding body 9 A permanent magnet 10 for locking and yokes 11a, 11b are installed on the 6 side, and a coil spring 13 for sliding return is installed between the sliding body 9 and the protrusion 12 of the case 1. It was constructed by covering it with a frame 16 having a long hole 15 into which the operating protrusion 14 was fitted and guided.

With this configuration, the electromagnet 6 moves the slider 9 from one end of the case 1 so as to elastically contract the coil spring 13.
When slid to the side, the movable contact piece 8 switches the conduction state between the fixed terminals 7, and the tips of the yokes 11a, 11b abut against the iron core 2 of the electromagnet 6, and the magnetic force of the permanent magnet 10 causes the yokes 11a, 11b to contact the iron core 2 of the electromagnet 6. 11b and the iron core 2 are attracted and locked in their operating position,
A current is applied to the terminals 5a, 5b of the electromagnet 6 to apply a reverse magnetic field to the attracting surfaces of the yokes 11a, 11b and the iron core 2, causing them to repel the attracting force of the permanent magnet 10, and causing the coil spring 13 to return to sliding motion. was.

In such a configuration, it is very difficult to obtain a stable attraction force due to variations in the characteristics of the permanent magnet 10 and variations in the shape of the attraction surfaces of the yokes 11a, 11b and the iron core 2, which makes it difficult to maintain parts management. However, it is very difficult to do so, and if foreign matter adheres to the suction surface, a gap will occur on the suction surface, leading to a decrease in the suction force and causing the coil spring 13 to release the lock at an unexpected time. This resulted in the need for a control system for foreign substances during production, which led to increased control costs.

The present invention eliminates the above-mentioned conventional drawbacks, and aims to provide a sliding electric component that can be operated stably and at low cost.

In order to achieve the above object, the present invention includes a sliding body that holds a movable contact piece that switches conduction between the fixed terminals, and a return spring that automatically returns the sliding body, in a case equipped with a plurality of fixed terminals. , consists of a rotatable cam that engages with the sliding body when the sliding body is in operation, and a solenoid that has an armature that locks the other end of this cam. It is characterized by being configured so that it can be canceled in either case.

Embodiments of the present invention will be described below with reference to FIGS. 2A, B to 8 of the drawings.

In the figure, a case 17 is made of synthetic resin and has an open top, and a plurality of fixed terminals 18 are implanted in the bottom of the case 17. A sliding body 20 made of synthetic resin or the like that holds a movable contact piece 19 that switches conduction between the fixed terminals 18 is incorporated into the case 17, and the inner end surface of one end of the sliding body 20 and the inner surface of the case 17 are connected to each other. A coil-shaped return spring 22 is disposed between the spring locking piece 21 that protrudes in the opposite direction. An L-shaped cam regulating protrusion 23 is provided at the tip of the sliding body 20 in the sliding direction, and an engagement recess 24 is formed at the rear of the cam regulating protrusion 23 .

Furthermore, a solenoid 25 is incorporated into one end of the case 17. This solenoid 25 has a coil 28 wound around a coil bobbin 27 having an iron core 26 installed in the center, and both ends of this coil 28 are connected to terminals 29a and 29b implanted in the coil bobbin 27, and this coil bobbin 27 is connected to the bottom plate and both sides. It is arranged on a U-shaped yoke 30 made of a plate,
One end of the iron core 26 is connected to the bottom of the yoke 30 with a hook, and an armature 3 made of magnetic metal is provided in the notch 31 at the top of both side plates of the yoke 30.
Both sides of one end of 2 are engaged, and this armature 32
A bending piece 33 provided to be bent downward at the center of one end side engages with a wire spring 34 whose both ends are engaged between both side plates of the yoke 30, and the bending piece 33 is bent downward at the center of one end side. A lock arm 35 is provided at the yoke 30, and an L-shaped cam holding piece 36 protruding toward the sliding body 20 is provided on one side plate of the yoke 30.

The solenoid 25 has a disk portion 37 on the sliding body 20 side, an armature engaging protrusion 38 that projects long in the tangential direction of the disk portion 37, and an engagement provided on the cam regulating protrusion 23 of the sliding body 20. A cam 40 that is integrally provided with a sliding body engaging protrusion 39 that engages with the recess 24
is arranged, and a U-shaped spring 41 is incorporated in the disk portion 37 of this cam 40. This U-shaped spring 4
One end of the cam 40 is engaged with an elongated hole 42 of the disk portion 37 of the cam 40, and the other end protrudes from the elongated hole 42 and is held by the inner end surface of the cam holding piece 36 of the yoke 30.

The case 17 is provided with ribs 43 and grooves 44 for positioning the solenoid 25.

Furthermore, a sliding body 20 is provided on the upper surface of the case 17.
A frame 47 is covered with a guide elongated hole 46 through which an operating piece 45 provided on the upper surface of the frame 47 passes.

The state assembled in this way is shown in FIG. 3. From this state, when the sliding body 20 is slid in the direction of arrow B against the return spring 22 using the operating piece 45, the sliding body 20 holds the The movable contact piece 19 switches conduction between the fixed terminals 18, and this sliding body 2
0, the slider engagement protrusion 39 of the cam 40 that was in contact with the lower surface of the cam regulating protrusion 23 rotates counterclockwise so as to enter the engagement recess 24. This rotation of the cam 40 causes the armature engaging protrusion 3 to
8 pushes the arm 35 of the armature 32 and rotates the armature 32 clockwise to release the arm 35.
With this operation, the armature 32 rotates counterclockwise by the elastic force of the wire spring 34 and engages with the tip of the armature engaging protrusion 38 to lock the operation of the cam 40. As a result, the slider engaging protrusion 39 of the cam 40 completely enters the engagement recess 24 of the slider 20 and locks the slider 20 against the elastic force of the return spring 22. This state is shown in FIG.

In this state, the terminals 29a and 29 of the solenoid 25
When a current is applied to b, the armature 32 is attracted to the iron core 26 and rotates clockwise against the wire spring 34. Due to this rotation of the armature 32, the tip of the arm 35 is disengaged from the tip of the armature engaging protrusion 38, and the cam 40 becomes free. As a result, the sliding body 20 is slid back by the return spring 22.

Furthermore, in the state shown in FIG. 5, if a force is applied to force the operating piece 45 of the sliding body 20 to slide in the direction of arrow C without applying current to the solenoid 25, the cam 40 and the elongated hole 42 Inserted U-shaped spring 4
The U-shaped spring 41 is supported by the other end held by the inner end surface of the cam holding piece 36 of the yoke 30 of No. 1 as a fulcrum.
The cam 40 moves in parallel in the direction of arrow C using the deflection of the armature, and the armature engaging protrusion 38 comes off from the tip of the arm 35 of the armature 32, and the cam 40 becomes free. When the piece 39 is removed, the cam 40 rotates clockwise, and the sliding body 20 is returned to its sliding position by the return spring 22.

Further, manual release can also be configured as shown in FIGS. 6 to 8. Figure 6 shows cam 4
The coil spring 48 is stored inside the coil spring 4.
A ball 49 is placed at both ends of the ball 49.
is held by a groove 50 provided in the case 17, and the cam 4
0 is manually forced to slide in the C direction, the position of the cam 40 moves in parallel due to the compression of the coil spring 48, and FIG. 7 also shows a coil spring 48 and a ball 49 provided on one side of the cam 40. A spherical portion 51 is provided at the other end of the cam 40 and the cam 40 is fitted into the notch 50 of the case 17, and its operation is the same as that shown in Fig. 6, and as shown in Fig. 8. is the cam 4 between the cam 40 and the case 17.
0 toward the solenoid 25 side
, and both ends of the cam 40 are connected to the long grooves 53 of the case 17.
The cam 40 is moved in the C direction by elastically contracting the spring 52 while holding the cam 40 in the C direction.

As described above, there is a case, a sliding body that controls electrical components incorporated in the case, a return spring that is installed between the sliding body and the case and returns the sliding body to a sliding position, and one end of the case. an armature made of magnetic metal whose one end is rotatably engaged with the solenoid; and an engaging protrusion that is rotatably held on the sliding body side of the solenoid and engages with the sliding body. Since the sliding electric component of the present invention is composed of a cam having an armature engaging protrusion that engages and locks the lock arm of the armature in this engaged state, the sliding electric component of the present invention does not require a permanent magnet, reducing costs. In terms of characteristics, problems such as instability in the attractive force due to variations in the magnetic flux of the permanent magnets, instability in the attraction force due to variations in the shape of the yoke and iron core, etc., have been solved, and the mechanical lock mechanism makes it easier to operate. The solenoid itself is extremely stable, there is no need for magnetic shielding, the operating voltage of the solenoid can be reduced, and the solenoid can be made smaller and lighter, which is extremely advantageous in terms of quality and economy, and has increased industrial value. It is a big thing.

[Brief explanation of drawings]

1 is an exploded perspective view showing a conventional sliding electric component, FIG. 2A is an exploded perspective view showing an embodiment of the sliding electric component of the present invention, and FIG. 2B is an exploded perspective view of a conventional sliding electric component. An enlarged perspective view of a solenoid, which is a main part of a sliding electric component, FIG. 3 is a sectional view of the same, FIG. 4 is a sectional view of the same operating state, and FIG. 5 is a sectional view of the main part showing the same operating state.
6 to 8 are top views of essential parts of other embodiments. 17... Case, 18... Fixed terminal, 19...
Movable contact piece, 20...Sliding body, 21...Spring locking piece, 22...Returning spring, 23...Cam regulating protrusion, 24...Engagement recess, 25...Solenoid, 2
6... Iron core, 27... Coil bobbin, 28... Coil, 29a, 29b... Terminal, 30... Yoke, 31... Notch, 32... Armature, 3
3...Bending piece, 34...Wire spring, 35...Lock arm, 36...Cam holding piece, 37...Disc part,
38... Armature engaging protrusion, 39... Sliding body engaging protrusion, 40... Cam, 41... U-shaped spring,
42... Long hole, 43... Rib, 44... Groove, 45
...Operation piece, 46...Guide elongated hole, 47...Frame.

Claims (1)

[Claims] 1. At least a case, a sliding body for controlling electrical components incorporated in the case, a return spring installed between the sliding body and the case to return the sliding body to a sliding position, and a return spring attached to one end of the case. a built-in solenoid; an armature made of a magnetic metal whose one end is rotatably engaged with the solenoid; A slide composed of a cam having an engaging protrusion that engages with the sliding body when sliding toward the solenoid, and an armature engaging protrusion that engages with the lock arm of the armature in this state to lock the rotation. Dynamic electrical components.