JP2760229B2 - Spring hook device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring for a mechanism used in an electric device such as a home VTR.

[0002]

2. Description of the Related Art FIGS. 15 and 16 are sketches showing a conventional spring hooking device. In the figure, reference numeral 1 denotes a spring hook provided on a substrate 2, 3 denotes a tension spring, and 4 denotes a spring hook such as a lever driven by the tension spring 3, which has a hole 4a.

Normally, hook portions 3a, 3b of a tension spring 3
Was caught in a closed loop with almost no gap 3
a and 3b provided with a slight gap 5. When the hook part of the other party is columnar like the spring hook part 1, the type of the hook part 3a can be used, and in the case of the hole 4a of the spring hook part 4, the type of the hook part 3b is used.

[0004]

Since the conventional spring hooking device is constructed as described above, it is forbidden to contact the live part when the spring comes off as in the US UL standard. In this case, if one side comes off, the other easily comes off, so it is necessary to provide some kind of stopper. For example, by making the end of the spring hook 1 larger than the inner diameter of the hook 3a of the tension spring 3, It was necessary to make the hook part 3b slightly press-fit at the time of insertion, or to deform the shape of the hook part 3b with a pliers after the spring was applied to eliminate the gap 5.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a spring hooking device which does not easily come off without using any separate parts or performing any special work. .

[0006]

According to the present invention, there is provided a spring hooking device which includes a support base, a projection protruding from the support base, and being stretched.
A supporting portion having a strength necessary to support the spring;
The support is protruded from the support unit at a distance from the support, and the tip is
A hook-shaped arm protruding away from the support, and the hook-shaped arm
A hinge portion that allows the arm portion to freely bend, wherein the hook-shaped arm portion is provided.
With the hook part of the spring folded down toward the support part.
Hook over the hook-shaped arm and the support
It is a thing.

[0007]

In the present invention, by devising the shape of the means for preventing the spring hook from coming off, the spring hooking operation can be completed without performing particularly difficult work. It can be done without difficulty.

[0008]

【Example】

Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to FIGS. In the drawing, the same or corresponding parts as those in the related art are denoted by the same reference numerals, and description thereof is omitted. In the figure, reference numeral 6 denotes a spring-supporting support provided on the substrate 2, 7 denotes a spring-supporting support, 8 denotes a hook-shaped arm, 9 denotes a recess provided on a side surface of the hook-shaped arm 8, and 10 denotes a hook. A hinge portion 11 for holding the arm 8 in a bendable manner is a contact portion that can contact the arm portion side surface 7 a of the support portion 7.

Next, the operation will be described. First, only pull <br/> multiplied like a hook arm portion 8 of the hook 3a of the tension spring 3 as shown in FIG. 3, the spring 3 tensile while tilting the arm portion 8 towards the support 7 opposite hooks Section (not shown). At this time, the hook portion 3a moves toward the concave portion 9 while sliding on the inner side surface of the hook-shaped arm portion 8. When the contact portion 11 hits the side surface 7a as shown in FIG. The portion 8 is fixed, the hook portion 3a is settled in the concave portion 9, and the tension spring 3 is stably supported as shown in FIG. Next, if the hook on the opposite side is displaced for some reason, the force for pushing the hook-shaped arm 8 toward the support portion 7 is lost at the same time, and the restoring force of the hinge 10 causes the hook-shaped arm 8 to move as shown in FIG. , The hook portion 3a is protruded from the inside by the support portion 7 and the concave portion 9, and the tension spring 3 is held by this.

Embodiment 2 FIG. Next, another embodiment of the present invention will be described with reference to FIGS. In the drawing, the same or corresponding parts as those in the related art are denoted by the same reference numerals, and description thereof is omitted. In the figure, 13 is a substrate 2
The spring hooking part provided above is the root of the spring hooking part 13.
In tongue stand while inclined in a direction consuming desired angular Device Ne body original good is, are integrally molded of the same material as the spring hooking portion 13. The tongue piece 14 is longer than the spring hook 13. At the height of the tip hook portion 13a of the spring hook portion 13, the tongue 1
The distance L to the outer surface of the extension 4 is larger than the hook 3a of the tension spring 3.

When the extension spring 3 is mounted on the spring hook 13, a tongue piece 14 is first passed through the hook 3a, and is inserted into the spring hook 13 while being bent as shown in FIG.
Since the tongue piece 14 has a very small cross-sectional area, there is almost no resistance due to this. Next, the hook 3 on the other end
Even if b deviates for some reason, the tension spring 3 is held by the spring hook 13 and the tongue piece 14 as shown in FIG. 9 and the tongue piece 14 does not bend under its own weight. Spring 3 does not come off.

Embodiment 3 FIG. Further, another embodiment of the present invention will be described with reference to FIGS. In the drawing, the same or corresponding parts as those in the related art are denoted by the same reference numerals, and description thereof is omitted. In the figure, reference numeral 15 denotes a spring hook provided on the substrate 2 and has a free end 15a. Reference numeral 16 denotes a hole on the substrate 2. Generally, the substrate 2 is formed of the same material as the spring hook portion 15, and the hole 16 is a hole for escape of the mold.

When hooking the tension spring 3, the hook 3a is inserted obliquely into the hole 16 and the hook 3a is inserted into the free end 15a as shown in FIG.
Slide 5 toward the fixed side and bring it as shown in FIG. Thereafter, the hook 3b on the opposite side is hooked on a hook (not shown). Hook part 3b on the other side for some reason
If the tension spring 3 moves toward the free end 15a even if it comes off, the tension spring 3 cannot approach the tip of the free end 15a more than the diameter of the main body as shown in FIG. The hook 3a does not come off. Also, tension spring 3
Cannot enter hole 16 (ie, hole 16
Is the maximum diameter of the hook 3a around the free end 15a.
Of the circle drawn by the free end of the spring when the spring 3 rotates freely
(The radius is smaller than the radius).
Can not be dropped below the tip of.

[0014]

As described above, according to the present invention, since it is possible to integrally mold without adding a new part, it is possible to obtain a highly effective product which can be manufactured at low cost and is hard to be detached. It works.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a spring hooking device according to Embodiment 1 of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a view showing a spring hooking process of FIG. 1;

FIG. 4 is a view showing a spring hooking process of FIG. 1;

FIG. 5 is a diagram showing a spring hooking process of FIG. 1;

FIG. 6 is a diagram showing the effect of FIG. 1;

FIG. 7 is a side view showing a spring hooking device according to Embodiment 2 of the present invention.

FIG. 8 is a view showing a spring hooking process of FIG. 7;

FIG. 9 is a diagram showing the effect of FIG. 7;

FIG. 10 is a perspective view showing a spring hooking device according to Embodiment 3 of the present invention.

FIG. 11 is a side view of FIG. 10;

FIG. 12 is a view showing a spring hooking process of FIG. 10;

FIG. 13 is a diagram showing a spring hooking process of FIG. 10;

FIG. 14 is a diagram showing the effect of FIG. 10;

FIG. 15 is a perspective view showing a conventional example.

FIG. 16 is a diagram showing the operation of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 tension spring 7 support portion 8 hook-shaped arm portion 10 hinge portion 13 spring hook portion 14 tongue piece 15 spring hook portion 16 hole

Claims (4)

(57) [Claims] 1. A support, and a support projecting from the support ,
A support having the strength necessary to support the spring to be performed ,
A hook-shaped arm protruding from the support and spaced apart from the support on the support base, and a tip protruding in a direction away from the support; and a hinge that allows the hook-shaped arm to bend freely. Hook
With the arms folded down toward the support, the spring
Hook part over the hook-shaped arm part and the support part.
Spring hook and wherein the was Unishi. 2. The spring hooking device according to claim 1, wherein the support base, the support portion, and the hook-shaped arm portion are integrally formed of a material having elasticity. 3. A spring hook portion for hooking a hook portion of a spring;
A tongue piece having an elasticity, which is provided to be inclined longer than the spring hooking part in a direction away from the spring hooking part from a substantially root of a side of the spring hooking part on which the body of the spring is hung,
The distance from the hook surface of the hook portion of the spring hook portion to the tongue piece is larger than the inner diameter of the hook portion of the spring, and the tongue piece is elastically pulled to the spring hook portion.
With the hook part of the spring brought close, the tongue piece and the spring
A spring hooking device characterized in that it is hooked over a hook portion . 4. A substantially inverted U-shape, in which one end is fixed on the substrate and a hook is provided at this portion to apply a spring, and a hole is provided on the substrate on the other end side. And the other end faces the hole and forms a free end substantially at the same level as the surface of the substrate or at a height enough to enter the hole, and the free end and the support on the substrate are formed. A distance from the edge of the hole in a direction other than the end direction to the edge of the hole is equal to or less than the diameter of the hook portion of the spring , and the maximum diameter of the hole is an inverted U-shape.
The spring freely rotates around the other end of the hook
The spring end of the spring is smaller than the radius of a circle drawn by the free end of the spring.