JPH0361970B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a switch with a device for preventing erroneous operation, which is provided with a locking member that limits displacement of an operating member.

(Summary of the Invention) The present invention is a switch with an erroneous operation prevention device that includes lock members 30, 38 that restrict displacement of the operating members 35, 68, 75.
By interlocking the bottom plate 38 provided with a lock hole 39 with the rotary knob 30 into which the locking members 8 and 75 are inserted, the displacement of the operating members 35, 68 and 75 is regulated, and the locking member is integrally inserted into the switch. Moreover, it is designed to be incorporated so that it can be easily operated.

(Prior Art) Conventionally, in small switches in which the operating member moves from side to side, such as toggle switches, waveform switches, slide switches, push button switches, etc., in order to prevent erroneous operation of the operating member,
Various types of sweets with misoperation prevention devices have been proposed.

In the early days, a simple stopper with no moving parts to restrict the movement of the operating member was attached to the operating panel with screws as a device to prevent erroneous operation. This was aimed at regulating the direction of operation rather than preventing erroneous operations.

Subsequently, improvements have been made and proposals have been made in which the direction of operation can be changed, such as Utility Model Application No. 55-64224.

Below, regarding this prior art, Figures 10 and 1
This will be explained using Figure 1.

A switch 10 is mounted on a substrate 12, and a cylindrical stopper member 15 with a bottom is attached to a cylindrical portion 16 of the switch 10. This stopper member 15 has a slot 1 so that the operating lever 13 faces it.
9 is provided, and the operating direction of the operating lever 13 is regulated by the mounting direction of the slot 19. That is, when regulating the operating direction of the operating lever 13, the stopper member 15 is rotated to direct the slot 19 provided in the stopper member 15 in the desired operating direction. In this way,
The operating lever 13 can be operated in the direction of the slot 19, but cannot be operated in the direction of the upper wall portion 18. Then, the flange 17 of this stopper member 15
The circular aperture of the display panel 14 is placed on top.

(Problems to be Solved by the Invention) The above-mentioned prior art is effective in regulating the direction of operation, but there are various problems described below.

The stopper member 15 is manufactured as a separate part from the switch itself, and both must be assembled when the switch is used.
parts that can be combined with each other are needed, and these parts must be managed.

In order to hold down the stopper member 15 during installation, it is necessary to provide a holding member such as a display panel, and in addition, considering the installation, it is necessary to make the assembly dimensions highly accurate.

When locking and unlocking, it is necessary to attach and detach the holding member of the stopper member 15 such as the display panel, which is cumbersome to operate.

Since the lock setting status is visible from the outside, there is a risk that the lock may be accidentally removed.

The present invention eliminates the above-mentioned problems and provides a switch with an erroneous operation prevention device that improves operability and can be downsized by integrally providing a lock member that can limit the displacement of the operating member in the switch unit. It is intended to.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a rotary knob into which an operating member is inserted and a bottom plate provided with a lock hole for regulating the displacement of the operating member, and The position of the lock hole can be changed using a rotary knob.

(Function) According to the present invention, there is provided a switch with an erroneous operation prevention device that includes lock members 30, 38 for regulating the displacement of the operating members 35, 68, 75,
Rotary knob 30 with inserts 5, 68, and 75
In addition, by housing the bottom plate 38 with a lock hole 39 for regulating the displacement of the operating members 35, 68, and 75 in the cover, the lock member can be integrated into the switch and can be easily operated. Incorporate. Therefore, by rotating the rotary knob 30, the lock hole 3 is
By changing the position of 9, the operating members 35, 6
8,75 displacement can be regulated.

Hereinafter, explanation will be given based on a specific example.

Notch 34 of rotary knob 30 and protrusion 4 of bottom plate 38
0 is always fitted. Therefore, in the state shown in FIG. 1, the recess 41 of the bottom plate 38 fits into the protrusion 49 of the elastic piece 48, and the relationship between the handle 35 and the lock hole 39 becomes the relationship (1) in FIG. 9a. It is maintained in a state of In this state, the straight portion of the lock hole 39 is parallel to the operating direction of the handle 35, so that the full stroke operation of the handle is possible.

Next, when the rotary knob 30 is rotated approximately 90 degrees, the engagement state between the recess 41 of the bottom plate 38 and the protrusion 49 of the elastic piece 48 is released due to the rotation of the bottom plate 38, and the handle 35
The relationship between the lock hole 39 of the bottom plate 38 and the lock hole 39 of the bottom plate 38 is shown in (2) in Fig. 9a.
It becomes a relationship. In this state, the lock hole 39 prevents the handle 35 from operating. To release this locked state, the rotary knob 30 is further rotated approximately 90 degrees in either the forward or reverse direction.

The above is a representative explanation of the effect of the present invention on an embodiment of a toggle switch that takes two stable positions. By rotating the rotary knob 30 approximately every 90 degrees, the ninth
The handle 35 and lock hole 3 of any one of (1) to (3) in Figure b
In the case of (1), only switching operation from the neutral position to the left is possible, in the case of (2), it is locked in the neutral position, and in the case of (3), it is possible to switch from the neutral position to the left. It is set to enable only switching operation in the right direction.
The above explanation is only about bistable and tristable types of toggle switches, but other types such as slide switches, waveform switches, etc. can also have the same effect.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

First, the case of a toggle switch will be explained using FIGS. 1 to 3 and FIG. 9.

This toggle switch mainly uses rotary knob 3.
0, handle 35, bottom plate 38, round nut 44, cover 4
6, an elastic piece 48, a switch body 55, etc. Here, the rotary knob 30 has a through hole 31 for inserting the handle in the center, a stop ring 32 is attached to the outer periphery of the cylindrical part 33, and a cutout 34 is provided on the lower end surface of the cylindrical part 33. It is formed into a substantially cylindrical shape. The handle 35 has an enlarged portion 36 approximately in the center.
A push rod 37 is provided in the recess opened from the lower end.
and a spring 58 that presses it. The bottom plate 38 is provided with protrusions 40 on the upper surface side and recesses 41 on the lower surface side at two positions around the circular flat plate, and a straight portion 42 is provided perpendicularly to the line connecting the two protrusions.
is formed, and a circular arc portion 43 is connected to the straight portion 42.
A locking hole 39 is formed by both straight portions 42 and a circular arc portion 43. The straight line portion 42 of the lock hole 39 corresponds to the locus of the tip of the handle 35 during the switching operation. The round nut 44 is screwed into a threaded portion 45 of the cover 46. The cover 46 has a through hole in the center, a threaded portion 45 in the upper part, and a lower part thereof is fitted into the switch body 55 so as to sandwich the tongue piece 51 of the elastic piece 48 and the short side 47 connected thereto.
The elastic piece 48 has a substantially rectangular ring shape, that is, it consists of opposing long pieces 50 and opposing short sides 47 . A protrusion 49 that engages with the recess 41 of the bottom plate 38 is formed at the center of each long piece 50, and a tongue piece 51 bent downward is formed at the center of the short side 47. The switch body 55 has a rectangular hole 52 with a bottom in the center, a fixed contact piece 56 is fixed in such a manner that a contact portion protrudes into the rectangular hole 52, and a recess 53 is formed near the upper end surface 54.

During assembly, a swingable movable contact piece 57 is disposed in the rectangular hole of the switch body 55. Next, the recess 53
is engaged with the tongue piece 51 of the elastic piece 48, the tongue piece 51 is held between the recess 53 and the inner surface of the cover 46, and the short side 47 is held between the upper end surface 54 of the switch body 55 and the cover 46.
The cover 46 is fitted onto the switch body 55 so as to be sandwiched between the inner step and the inner step. Next, the bottom plate 38 is inserted through the through hole of the cover 46 and placed on the elastic piece 48. Next, insert the handle 35 into the lock hole 39 of the bottom plate 38.
The cover 46 is inserted so that the tip of the push rod 37 is in contact with the upper surface of the movable contact piece 57.
It is arranged in the through hole of. Finally, rotary knob 3
0 is inserted into the through hole of the cover 46 by inserting the handle 35 into the through hole 31, and the protrusion 40 of the bottom plate 38 is engaged with the cutout 34, and the handle 35 is inserted into the through hole 31. The stop ring 32 is pushed into the recess on the inner surface of the cover 46 so that it is fixed therein. This stop ring 32 prevents the rotary knob 30 from slipping out above the cover.

In the state shown in FIG. 1, the stable operating position of the operating member, in this case the handle 35, differs depending on whether it is in the 2nd or 3rd position, but the relationship between the handle 35 and the lock hole 39 is as shown in FIG.
(1), or (1) or (3) in Figure 9b.
In this state, it is possible to switch the handle 35 as desired. This is because the straight portion 42 of the bottom plate 38 is set in the direction of the trajectory of the tip of the handle 35. This state is maintained by fitting the recess 41 of the bottom plate 38 and the protrusion 49 of the elastic piece 48. In other words, by providing the elastic piece 48, when the rotary knob 30 is rotated, it provides a snap action action so that the predetermined position can be clearly seen, and at the same time, it prevents the rotary knob 30 from rotating naturally due to vibrations, shocks, etc. can do. However, since the enlarged portion 36 of the handle 35 constantly applies a force pushing up the rotary knob 30, the rotary knob 30 will not rotate due to normal vibrations or impacts, so the elastic plate can be omitted.

When the rotary knob 30 is rotated approximately 90 degrees from this holding state, the recess 41 of the bottom plate 38 and the protrusion 49 of the elastic piece 48 are disengaged, and the straight part 42 of the bottom plate 38 intersects with the operation locus of the handle 35. However, the state shown in FIG. 9a (2) or FIG. 9b (2) is reached, and the movement of the handle 35 is blocked by the lock hole 39 of the bottom plate 38. That is,
The handle 35 is locked.

Next, a modification of the toggle switch will be described with reference to FIG. 4.

Here, it is also possible to provide a supporting shaft 84 perpendicularly to the pivoting enlarged portion 36 of the handle 35 so that the handle can tilt left and right about this shaft 84. In this case, the shaft 84 is attached to the rotary knob.
A long hole 83 is provided to receive it. Thereby, the locking mechanism can be applied to the switch having the shafted handle 35.

Next, let's look at the 5th section regarding the case of a slide switch.
This will be explained using FIGS. 6 and 9.

This slide switch mainly uses rotary knob 3.
0, a bottom plate 58, a cover 65, a handle 68, a swingable movable contact piece 70, a switch base 73, etc.

The rotary knob 30 has an L-shaped hole 59 opened at the lower end in the lower cylindrical portion. Bottom plate 58
A protrusion 60 is provided approximately at the center of the arc of the lock hole 39. As the top view of the cover 65 is shown in FIG. 6, the cover 65 is an intermediate cylindrical body 6 having a through hole 61 in the center that allows a sliding handle 68 to be moved.
2 and a circular collar portion 63 having an arbitrary number of elastic pieces 67 and a penetrating hole 66 are connected by ribs 64 provided at opposing positions. The width of this rib 64 is made smaller than the width of the L-shaped hole 59 of the rotary knob 30.
The handle 68 has a push rod 69 that slides on a movable contact piece 70. The switch base 73 is provided with a protrusion 74 that fits into the hole 66 of the cover 65.

During assembly, the rib 64 of the cover 65 is inserted into the L-shaped hole 59 of the rotary knob 30, and the entrance of the L-shaped hole 59 engages with the protrusion 60 of the bottom plate 58.
A protrusion 74 of a switch base 73 on which a handle 68, a movable contact piece 70, a common contact 72, and a fixed contact piece 71 are mounted is fitted into the hole 66 in the combination of the rotary knob 30, the bottom plate 58, and the cover 65. . By rotating the rotary knob 30, the handle 68 and the lock hole 3 are rotated.
The relationship with 9 changes as shown in Figure 9 a or b,
Prevent malfunction.

Next, the case of a waveform switch will be explained using FIG. 7.

Here, this waveform switch differs from the switches shown in FIGS. 1 to 4 in that a swing-type push button 75 is used as the operating member. The other configurations are the same as the configurations of the switch shown in FIGS. 1 to 4 described above, so the explanation will be omitted.

Next, a modification of the rotary knob will be explained using FIG. 8.

Here, a tongue piece 80 is formed at the lower part of the rotary knob 30, and this tongue piece 80 is attached to the inner step part 81 of the cover 46.
It is also possible to lock the rotary knob 30 to prevent it from coming off. With this configuration,
Easy to install.

In the above embodiment, the rotary knob and the bottom plate are constructed separately, but they may be formed integrally.

Further, the present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) As described above in detail, according to the present invention, the following effects can be achieved.

(1) A rotary knob and a bottom plate are placed inside the cover of the switch, and a locking mechanism is built into the switch itself.
Since it can be integrated, it can be made compact and the rotary knob for locking can be easily operated.

(2) In addition to supporting the operating member and sealing the opening, the rotary knob also functions as an operating member for the bottom plate, which is a locking member, and the switch configuration can be simplified in spite of the increased functionality. It can be manufactured at low cost.

(3) Since the rotary knob is arranged close to the periphery of the operating member, the space can be reduced and the appearance is also excellent.

(4) Since the bottom plate, which is the locking member, is not visible from the outside of the switch, it is a simple key switch, that is,
Just like a dial-type key, it can be locked secretly and can be protected against mischief by outsiders or children.

(5) The switch according to the present invention can be easily constructed by simply adding and processing parts to a conventional switch.

(6) It can be applied to a wide range of operating members such as toggle levers, slide knobs, and wave buttons.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a toggle switch showing a first embodiment of the present invention, Fig. 2 is a vertical sectional view of the switch, Fig. 3 is a top view of the switch main body, and Fig. 4 is a modification of the switch. FIG. 5 is an exploded perspective view of a slide switch showing a second embodiment of the invention, FIG. 6 is a top view of the cover of the switch, and FIG. 7 is a third embodiment of the invention. 8 is a sectional view of a rotary knob of another embodiment, FIG. 9 is an explanatory diagram of a locking mode according to the present invention, and FIG. 10 is a partially cutaway side view of a conventional example. 1st
FIG. 1 is a top view of a conventional example. 30...Rotary knob, 31, 61...Through hole,
32...Stop spring, 33...Cylindrical part, 34
...Misplace, 35,68...Handle, 36...Ampulla, 37,69...Push bar, 38,58...Bottom plate,
39...Lock hole, 40,60,74...Protrusion,
41... Recess, 42... Straight part, 43... Arc part, 44... Round nut, 45... Threaded part, 46,
65... Cover, 47... Short side, 48, 67... Elastic piece, 49... Protrusion, 50... Opposing long piece, 51,
80... tongue piece, 52... rectangular hole, 53... recessed part,
54...Top end surface, 55...Switch body, 56,
71... Fixed contact piece, 57, 70... Movable contact piece, 5
8...Spring, 59...L-shaped hole, 62...
...Intermediate cylindrical body, 63...Flame, 64...Rib, 66
... Hole, 72 ... Common contact, 73 ... Switch base, 75 ... Rocking push button, 81 ... Inner step, 82 ... Bent part, 83 ... Long hole, 84 ...
shaft.

Claims (1)

[Scope of Claims] 1. A switch main body, a cover provided on the top of the switch main body, a cylindrical rotary knob supported by the cover, and an operating member supported by the rotary knob. 1. A switch with an erroneous operation prevention device, comprising: a bottom plate connected to the rotary knob and having a lock hole capable of regulating displacement of the operating member. 2. The switch with an erroneous operation prevention device according to claim 1, wherein the operating member is a toggle lever. 3. The switch with an erroneous operation prevention device according to claim 1, wherein the operating member is a slide knob. 4. The switch with an erroneous operation prevention device according to claim 1, wherein the operating member is a swing type button.