JPH0637707Y2 - Hook spring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a spring for a hook used particularly for stretchable fabrics, knits and the like.

[Prior Art] A conventional spring, which has stable spring strength, is composed of a spring body 01 having an engaging spring 02 and a caulking hole 03, and a head 04 having an eyelet 05 formed at the bottom, as shown in FIG. As shown in FIG. 12, the spring body 01 is attached to the cloth 06 by piercing the eyelets 05 and crimping. Therefore, in the conventional spring, since the eyelet 05 penetrates the cloth 06 and opens a round hole in the cloth, there is a problem that the thread is broken in the case of a stretchable cloth or a knit, and the cloth is frayed from here. .

So the spring is not used for stretchable fabrics or knits,
For stretchable fabrics and knits, hooks called snappers as shown in Fig. 13 are used. In the case of this hook spring, there is no built-in engagement spring in the fitting opening 08 into which the thread is fitted, and the head 010 is provided with five claws 011 so as not to pierce the cloth or cut the thread. The claw 011 is formed, and the claw crimp portion 09 of the spring body 07 is crimped to attach the spring body 07 to the cloth 06 as shown in FIG.

[Problems of the prior art] However, in the case of this snapper, since the pawl 011 on the head 010 side and the spring body 07 are strongly pressed when the spring is attached to the fabric 06, the fitting opening 08 formed in a perfect circle is delicate. Transformed into
There is a problem that the spring strength changes.

A first object of the present invention is to allow a spring incorporating an engaging spring having a stable spring strength to be used for stretchable fabrics and knits, and a second object of the present invention is to provide the spring to the fabric. It is to prevent the spring strength from being changed at the time of mounting, and the third purpose is to enhance decorativeness.

[Means for Solving the Problems] The configuration of the present invention is as follows.

A spring body 1 is formed by incorporating two engagement springs 2 in a fitting hole into which a spring fits and a caulking hole 3 is formed at the bottom of the fitting hole, and the caulking hole 3 of the spring body 1 is caulked. Caulking part 5
Is formed in the lower central part, and a claw crimping portion 6 with a caulking rib 3'is formed around the upper surface, and the walnut seat 4 is formed to have a diameter larger than the outer diameter of the spring body 1, and the walnut seat 4 is formed on the lower surface. A hook 7 comprising a head 7 formed by forming a plurality of claws 8 for crimping the claws 6 of the claws via cloth.

[Operation] The walnut seat is crimped to the spring body in advance by using the caulking hole and the caulking portion. Then, when the spring is attached to the cloth, the cloth is placed between the walnut seat and the head, the claws on the head side are passed through the cloth, and the nails of the walnut seat are crimped.

[Embodiment] FIG. 1 is an exploded sectional view of a spring according to the present invention. Reference numeral 1 is a two-spring body, 2 is an engaging spring, and 3 is a caulking hole. A walnut seat 4 has a shape in which a caulking portion 5 for caulking the caulking hole 3 of the spring body 1 is formed in the lower center portion thereof, and a claw caulking portion 6 is formed around the upper surface.
A head 7 is provided, and five claws 8 are formed on the lower surface of the head 7.

2 shows a state in which the walnut seat 4 is swaged with respect to the spring body 1, and FIG. 3 shows the spring body 1 in which the walnut seat 4 has been swaged.
Is attached to the.

FIG. 4 shows an example in which the diameter W of the walnut seat 4 is set to be larger than the diameter W ′ of the spring body 1 so that the walnut seat 4 is exposed around the spring body 1. Not only is the seat 4 stable, but it is possible to provide decorativeness by marking the exposed portion 4'of the walnut seat 4 or by using different colors for the walnut seat 4 and the spring body 1.
Further, by aligning the upper surface around the spring body 1 and the lower surface around the walnut seat 4 as shown in FIGS. 2 to 4, it is possible to eliminate the flicker between the spring body 1 and the walnut seat 4.

FIG. 5 shows that a rib 6 ′ is formed in the claw-staking portion 6 of the walnut seat 4, and a swage opening 6 ″ is formed in the center of the walnut seat 4.
Further, as shown in FIG. 6, an embodiment in which a step portion 6 ″ is formed on the upper surface of the caulking opening 6 ″ and is lowered by one step is formed around the caulking opening 6 ″. As shown in FIG. Further, a caulking rib 3'is formed around the caulking hole 3 of the spring body 1, and the spring body 1 and the walnut seat 4 are caulking as shown in FIG. This way, walnut 4
The claw 8 is engaged with the rib 6 ', and there is an effect that it is hard to rotate.
Further, when the step portion 6 ″ is formed on the upper surface of the walnut seat 4, the upper surface of the walnut seat 4 becomes smooth and the cloth contact is improved.

FIG. 9 shows that the caulking portion of the spring body 1 is not a hole but a protruding portion 1 '.
This is another embodiment in which the walnut seat 4 shown in FIGS. 5 and 6 is fitted into the walnut seat 4 and caulked as shown in FIG.

[Effects of the Present Invention] The present invention has the above-described configuration and operation, and has the following effects.

a. Spring strength is stable (2) Spring can be used for stretchable fabrics and knits.

b. (2 pieces) When attaching the springs, the spring body does not have an unreasonable force, so the spring strength does not change when attaching the springs.

c. By setting the diameter of the walnut seat larger than that of the spring body, the walnut seat is exposed around the spring body. As a result, the exposed portion is stamped, or the walnut seat and the spring main body are colored differently to form a two-color spring structure, which is excellent in decorativeness and gives a high-class feeling.

d. By forming ribs on the claws of the walnut seat,
The spring body and walnut seat do not rotate.

e. By forming a step lower on the upper surface of the walnut seat, the walnut seat can be made smooth when the spring body is crimped.

f. By aligning the walnut seat and the spring body around it, it is possible to eliminate the glare.

[Brief description of drawings]

1 is an exploded cross-sectional view of a spring according to the present invention, FIG. 2 is a cross-sectional view of a spring body with a walnut seat crimped, and FIG. 3 is a cross-sectional view of a spring with the spring according to the present invention attached. FIG. 4 is a diagram showing an embodiment in which the walnut seat has a diameter larger than that of the spring body, FIG. 5 is a plan view of the walnut seat having ribs, and FIG. 6 is a sectional view of the walnut seat shown in FIG. FIG. 7 is a cross-sectional view of a spring body having a caimerib formed therein, FIG. 8 is a cross-sectional view of the walnut seat shown in FIGS. 5 and 6 and the spring body shown in FIG. FIG. 10 is a sectional view of an embodiment in which a caulking step portion is formed on the main body, and FIG. 10 is a walnut seat and a ninth seat shown in FIGS.
Fig. 11 is a cross-sectional view of the spring body shown in the figure in a crimped state, Fig. 11 is an exploded cross-sectional view of a conventional double spring, and Fig. 12 is a cross-sectional view of the spring shown in Fig. 11 attached to a cloth. FIG. 13 is an exploded sectional view of the snapper, and FIG. 14 is a sectional view of the cloth (knit) with the snapper shown in FIG. 13 attached. 1 ... Spring body, 2 ... Engagement spring 3 ... Caulking hole, 4 ... Walnut seat 5 ... Caulking part, 6 ... Claw caulking part 7 ... Head, 8 ... Claw 9 ... Fabric

Claims (3)

[Scope of utility model registration request] 1. A spring main body (1) having two engaging springs (2) incorporated in a fitting hole into which a spring is fitted and a caulking hole (3) formed at the bottom of the fitting hole, and a caulking of the spring main body (1). Caulking part 5 to be caulked in hole 3
Is formed in the lower central part, and a claw crimping portion 6 with a caulking rib 3'is formed around the upper surface, and is formed to have a diameter larger than the outer diameter of the spring body 1, and the walnut seat 4 is formed on the lower surface. A hook 7 comprising a head 7 formed by forming a plurality of claws 8 for crimping the claws 6 of the claws via cloth. 2. A step portion 1'is formed by bulging the center of the bottom portion of the fitting hole of the spring body 1 to the outside, and the step portion 1'is fitted with a caulking hole 5 on the walnut seat 4 side for caulking. The hook spring according to claim 1, wherein the hook spring is configured as described above. 3. A walnut seat 4 is formed when the walnut seat 4 and the spring body 1 are caulked by using a step portion 1'by forming a flat surface which is a top surface of the walnut seat 4 and around the caulking hole 3. The hook spring according to claim 1, wherein the upper surface of the hook is configured to be smooth.