JPS5936750Y2 - Spring hook - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spring hook for hooking the free end side of a spring used in an appropriate device.

Generally, this type of spring hook is formed by cutting a bar-shaped member, and includes a small diameter shaft portion 11 and a large diameter shaft portion 11 that continues to the shaft portion 11 via a stepped portion 13, as shown in FIG. In the spring hook 1 consisting of a shaft portion 12, the small diameter shaft portion 1
A caulking part 16 is formed at the tip of the large diameter shaft part 11, and an annular groove 15 for a spring hook is formed on the outer periphery of the free end side of the large diameter shaft part 11. The small diameter shaft part 11 is inserted into the mounting hole 31 formed in the attached part 3 of the spring 2, and the free end part of the spring 2 is attached by caulking the tip crimped part 16 of the small diameter shaft part 11 of the spring 2. Shaft 1
However, performing machining operations such as caulking during the installation process is very complicated and time-consuming, and the above-mentioned The spring hook having such a structure has problems such as being complicated and time-consuming to manufacture, difficult to carry out continuous processing by assembly line work, and disadvantageous in terms of cost.

The present invention was devised to solve such problems, and its purpose is to make it extremely easy and quick to attach the device to the attached part of the device, and to prevent the attachment from accidentally coming off or wobbling. To provide a spring latching fitting which can be reliably carried out without causing damage, and which can be manufactured easily and at a cost reduction.

Embodiments of the present invention will be described below based on the drawings.

The spring hook of the present proposal, which is generally indicated by number 1 in the figure, is as follows:
The insertion portion 11 and the flat spring hook portion 12 having a length in the width direction larger than the outer diameter of the insertion portion are integrally formed from an elastic T-shaped plate material 1a.

That is, cuts a, a are made on both sides of the boundary between the top side band-like part 11a and the leg-side band-like part 12a of this T-shaped board 1a,
The leg side band part 12a is held in a plate shape, and the top side band part 11a is wound into a cylindrical shape.
Step a to form the insertion part 11.

At this time, a slit 13 extending in the axial direction is left in the insertion part 1, leaving a predetermined gap between both winding ends of the band-shaped part 11a.
The so-called insertion portion 11 is formed to have a C-shaped cross section.

On the other hand, a through hole 14 for a spring hook is formed in the center of the leg side strip part 12a held in a plate shape, and concave cutouts 15 and 15 for a spring hook are formed on both sides of the leg side strip part 12a. 12
A flat spring hook part 12 having a length in the width direction larger than the outer diameter length of the insertion part 11 is formed by doing step a.

Therefore, the spring hook 1 of the present invention is produced by punching out a T-shaped plate material 1a from a band steel material (slip steel) using a press machine.
Moreover, during this press working, the winding of the top side band portion 11a and the formation of the through hole 14 and the recessed portion 15,15 are performed at the same time, so that they can be formed in only one process.

The spring hook 1 of the present invention is constructed as described above, and when the spring 2 is to be hooked on the device as appropriate, the spring hook 1 is formed on the attached portion 3 of the device as shown in FIG. The insertion part 11 of the spring hook 1 is inserted into the hole 31 with the diameter reduced elastically through the slit 13, so that the insertion part 11 exerts its elastic restoring force. The spring hook 1 is securely maintained in the mounting hole 31, so that the spring hook 1 does not accidentally come off or wobble from the attached part 3, and the end face of the spring hook 12 on the insertion side is securely attached to the attached part 3. The support strength of the spring hook part 12 can be increased by bringing the spring hook part 3 into close contact with the wall surface, so that the free end of the spring 2 can be reliably hooked into the through hole 14 or the recessed parts 15, 15 of the spring hook part 12. You can keep it.

As shown in Fig. 3, the present invention uses an elastic rectangular plate material, winds the plate material into a cylindrical shape, and crushes one end of this cylindrical intermediate material to maintain the plate shape. A spring catch part 12 having a through hole 14 for a spring catch may be formed at one end, and an insertion part 11 having an axially extending slit 13 may be formed at the other end.

As explained above, the spring hook according to the present invention can be installed by simply inserting the insertion part into the mounting hole of the part to be installed.
Unlike conventional methods, machining operations such as caulking are not required for attachment, and therefore the spring hook can be attached extremely easily and quickly.

In addition, the attachment state can be maintained by the elastic restoring force of the insertion part, so the insertion part will not be accidentally removed from the mounting hole or rattled within the installation hole. Therefore, the spring hook can be attached extremely reliably, and the end surface of the spring hook part on the insertion side can be brought into close contact with the wall surface of the part to be attached, so that the insertion part can be attached over a predetermined length of the insertion part. It can be inserted into the mounting hole of the attached part, saving the trouble of adjusting the degree of insertion of the insertion part, increasing the support strength of the spring hook part against the tensile load, and ensuring the support of the free end of the spring. It can be done.

In addition, the spring hook of the present invention uses a plate material, and one end of the plate is wound into a cylindrical shape, while the other end is held flat to form an insertion portion and an outer diameter of the insertion portion. Since it is integrally formed with the flat spring hook having a length in the width direction that is larger than the length, it is extremely easy to manufacture by press processing, and the material can be minimized, and in addition, assembly work is easy. Continuous processing is possible and costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the spring hook of the present invention, Fig. 2 is a perspective view showing the material thereof, Fig. 3 is a perspective view showing another embodiment, and Fig. 4 is a usage state of the product of the present invention. Figure 5 is a diagram of the conventional product in use. 1...Spring hook, 1a...Plate material, 1
1...Insert part, 12...Spring hook part,
13...Slit, 14...Through hole (
(spring hanging part), 15... recessed part (spring hanging part).

Claims (1)

[Scope of utility model registration request] An elastic plate is used, and one end of the plate is wound into a cylindrical shape to form an insertion portion having a C-shaped cross section with a slit extending in the axial direction, while the other end of the plate has the A spring hook characterized by integrally forming a flat spring hook portion having a length in the width direction that is larger than an outer diameter length of the insertion portion.