JPH031863Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a small switch, and particularly to a small switch whose handle is tilted and switching is performed via a slider.

(Summary of the invention) In order to obtain a small switch with a good operating feel, stable operation, and long life that is easy to manufacture, this invention has a large-diameter section and a large-diameter section at the bottom of the handle. A hole in which a step part continuous to the part and a small diameter part continuous to the step part are formed, and a large diameter part and a step part continuous to the large diameter part are formed in the lower part corresponding to the hole. A slider having a small-diameter portion connected to the step is provided, and a coil spring is installed between the step of the hole and the step of the slider, and the movable contact piece is operated via the slider. This is what I did.

(Prior Art) Conventionally, the operating section of a small switch, which switches the electric circuit through a slider by tilting the handle, is configured such that the slider is attached to the handle along with a coil spring through a hole drilled from the bottom of the handle. Ru. FIG. 4 is a front sectional view of a small switch having such a conventional operating section. As shown in the figure, a fixed contact piece 2 having a terminal 3 is implanted in a case 1, and a cover 4 is provided on the upper part of the case 1. A sleeve 5 is attached to this cover 4, and the enlarged portion of the handle 7 is locked within this sleeve 5. This handle 7 has a hole opened from the bottom thereof, and a slider 8 is attached to this hole via a coil spring 9. In this case, this hole was opened along the axis of the handle 7 so as to have a diameter approximately equal to the outer diameter of the slider.

(Problem to be Solved by the Invention) However, in the operating section of the above-mentioned small switch, since the portion of the slider 8 that is inserted into the hole provided in the handle 7 is short, the slider 8 is attached to the axis of the handle 7. There were problems in that the slider 8 was deviated from the center direction and rattled, and also stuck in the hole in the handle, resulting in excessive operating force on the handle 7, resulting in poor operating feel and unstable operation. In order to solve this problem, if the portion of the slider 8 inserted into the hole of the handle is made longer, the length of the switch inevitably increases, which is a factor that prevents miniaturization of the switch. In addition, the handle 7 of the slider 8
As the length of the coil spring 9 increases, the range in which the coil spring 9 is installed becomes narrower, and it becomes difficult to design the coil spring 9 to impart sufficient elastic force to the slider 8. Moreover, excessive force is applied to the coil spring 9, making it susceptible to accidents such as fatigue and breakage, which shortens the life of the switch.

Furthermore, in the conventional device, when assembling the operating section, first insert the coil spring 9 into the hole of the handle 7.
was inserted, and then the slider 8 was attached, but this assembly work was accompanied by difficulty. In other words, it is troublesome and time-consuming to insert only the coil spring into the hole of the handle 7, and when the slider 8 is attached after the coil spring 9 has been inserted, the slider 8 will not fit into the handle due to the restoring force of the coil spring 9. I had a problem with it popping out of hole 7 and making it difficult to install.

The object of the present invention is to eliminate the above-mentioned problems and provide a compact switch that provides a good operating feel and stable operation, is easy to manufacture, and has a long life.

(Means for explaining the problem) In order to solve the above-mentioned problem, the present invention provides a small switch that operates a movable contact piece by tilting the handle, and has a large diameter part at the bottom of the handle. and a hole in which a step part continuous to the large diameter part and a small diameter part continuous to the step part are formed, and a large diameter part and a small diameter part continuous to the large diameter part are formed in the lower part corresponding to the hole. A slider having a stepped portion and a small diameter portion connected to the stepped portion is provided, and a coil spring is installed between the stepped portion of the hole and the stepped portion of the slider, and the movable contact piece is moved through the slider. Configure it to work.

(Operation) When the handle 16 is tilted, the slider 17 moves upward along the moderation cam surface and compresses the coil spring 18. When the middle point is passed, the slider 17 moves quickly due to the restoring force of the coil spring 18, operating the movable contact piece 15, and performing a switching operation of the electric circuit.

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

FIG. 1 is a front sectional view of a small switch according to the present invention, and FIG. 2 is an exploded perspective view of the same small switch. In the figure, reference numeral 11 denotes a base body, and a cam surface is formed at the center of the upper surface of the base body, with which the tip of the slider abuts and for switching moderation. Reference numeral 12 designates a fixed contact piece implanted on both upper surfaces of the base body 11, 13 a terminal led out from the fixed contact piece, 14 a switch body, 15 a clip-shaped movable contact piece for switching the fixed contact piece 12, and a handle. It is attached to the recesses provided on both sides of the lower part of the holder, and is arranged so as to be able to come into sliding contact with the fixed contact piece 12. 16 is a handle, 17 is a slider, and 18 is a coil spring, the structure and arrangement of which will be described in detail later. Reference numeral 19 denotes an O-ring that is attached to the outer periphery of the upper part of the enlarged portion of the handle 16 and abuts against the stepped portion in the sleeve of the switch body 14, and is used for waterproofing and dustproofing.

Here, the operation section of the small switch will be explained in detail.

A large-diameter portion 16-1 with a large diameter is provided at the lower shaft core portion of the handle 16, and a step portion 16-2 is provided in series with this large-diameter portion. 1
A hole having a small diameter portion 16-3 smaller in diameter than 6-1 is provided. On the other hand, in response to this, the slider 17
A large diameter part 17-1 with a large diameter is provided at the lower part of the large diameter part 17-1, and a step part 17-2 is provided in series with this large diameter part, which is further connected to this step part and has a smaller diameter than the large diameter part 17-1. A small diameter portion 17-3 is formed. Note that the dimensions of the large diameter portion 16-1 and the small diameter portion 16-3 of the hole in the handle 16 are the same as the large diameter portion 17-1 and the small diameter portion 17-3 of the slider.
The dimensions should be approximately equal to 3. Further, the coil spring 18 is wound so as to have an inner diameter substantially equal to the diameter of the small diameter portion 17-3 of the slider.

Therefore, the coil spring 18 is attached to the small diameter portion 17-3 of the slider, and then inserted into the hole of the handle 16. The tip of the small diameter portion 17-3 of the slider is inserted into the small diameter portion 16-3 of the hole in the handle 16, and the upper end of the coil spring 18 is inserted into the stepped portion 16-2 of the hole in the handle 16.
The stepped portion 17- of the slider
The lower end of the coil spring 18 is brought into contact with the coil spring 2.

Next, an example of assembling such a small switch will be described.

First, coil spring 1 is attached to the small diameter portion 17-3 of the slider.
Attach 8. At this time, grease is applied to prevent the coil spring 18 from slipping off. next,
The upper end of the slider 17 to which the coil spring 18 is attached is inserted from the lower part of the hole in the handle 16 to set the operating section. At this time, the movable contact piece 15 is also set at the bottom of the handle 16. Next, an O-ring 19 is secured to the outer periphery of the upper portion of the enlarged portion of the handle 16, and the O-ring 19 is attached to the sleeve of the switch body 14 from below. Next, the base body 11 is fitted and fixed from the lower part of the switch body 14 so as to be aligned with the operating section.

FIG. 3 is a front sectional view of a small switch showing another embodiment of the present invention. In this example,
A waveform button 21 is provided as an operator to form a waveform switch, and a hole provided in the handle 22 consists of a large diameter part and a small diameter part, and the hole passes through the top and bottom of the handle 22. The slider 24 has a large diameter part and a small diameter part as in the previous embodiment, and the coil spring 23 is attached to the small diameter part. A converter 25 is attached to the lower end of the slider 24, and the movable contact piece 26 is caused to see-saw through the converter 25 to switch the fixed contact piece.

In this embodiment, when the slider 24 is pushed in, the upper end of the slider 24 protrudes from the upper end of the handle 22, but the length of the handle 22 is effectively used to guide the slider 24 well. It is composed of

Note that the present invention is not limited to the above-described embodiments, and various modifications can be made in accordance with the spirit of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the invention) As explained above in detail, according to the invention, (1) The length of the handle is effectively utilized, and the handle has a large diameter part and a small diameter part that guide the slider well. Since the hole is provided, it is possible to eliminate rattling of the slider, thereby eliminating the phenomenon of the slider biting into the hole of the handle, and also to make the length of the slider sufficiently long. As a result, the contact mechanism can transmit operating force without any play in operating the handle, providing a good operating feel and allowing stable operation.

(2) A stepped portion having a large diameter portion and a small diameter portion is formed in the hole of the handle, and a corresponding slider is provided, and the coil spring is placed in the large diameter portion of the hole in the handle and around the small diameter portion of the slider. Since the coil spring is housed in the housing, there is a sufficient range for mounting the coil spring, and it is possible to prevent the coil spring from weakening or breaking.
As a result, the handle can be shortened and the switch can be made smaller.

(3) Since the coil spring is attached around the small diameter part of the slider, the small diameter part of the slider acts as a guide for the expansion and contraction of the coil spring, and the coil spring does not make complicated movements such as bending. This allows the coil spring to perform its original function.

(4) Since the coil spring can be assembled to the small diameter portion of the slider, assembly of the operating section is easy and costs can be reduced.

(5) Since the movement of the slider is restricted even if an impact force is applied from above the handle during assembly, the coil spring is not pressed excessively and deformed, and a coil spring that always has stable elastic force can be prepared.

As described above, the present invention has various advantages and its effects are remarkable.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a small switch according to the present invention, FIG. 2 is an exploded perspective view of a small switch according to the present invention, and FIG. 3 is a front sectional view of a small switch showing another embodiment of the present invention. FIG. 4 is a front sectional view of a conventional small switch. 11... Base body, 12, 27... Fixed contact piece, 13
...Terminal, 14...Switch body, 15, 26...
...Movable contact piece, 16, 22...Handle, 16-1...
Large diameter portion of the hole in the handle, 16-2... Stepped portion of the hole in the handle, 16-3... Small diameter portion of the hole in the handle, 17, 24
... Slider, 17-1 ... Large diameter part of slider, 17
-2...Step part of the slider, 17-3...Large diameter part of the slider, 18, 23...Coil spring, 19...O ring, 21...Wave button, 25...Convertor.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A small switch that operates a movable contact piece by tilting a handle to perform switching, wherein the lower part of the handle includes a large diameter part and a stepped part connected to the large diameter part. and a small diameter part connected to the stepped part, and a large diameter part, a stepped part connected to the large diameter part, and a small diameter part connected to the stepped part in the lower part corresponding to the hole. A small switch characterized in that the slider is formed, and a coil spring is installed between the stepped portion of the hole and the stepped portion of the slider, and the movable contact piece is operated via the slider. . (2) The handle is formed with an enlarged portion, and an O-ring is disposed on the outer periphery of the upper portion of the enlarged portion, thereby sealing the gap between the switch body and the handle. The small switch described in item 1.