CN212177735U

CN212177735U - Plane volute spiral spring with circular hook

Info

Publication number: CN212177735U
Application number: CN202022596098.5U
Authority: CN
Inventors: 翁云富; 陈洪前; 冯园
Original assignee: Ningbo Yunsheng Elasticity Element Co ltd
Current assignee: Ningbo Yunsheng Elasticity Element Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2020-12-18
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a plane volute spiral spring with a circular hook, wherein the outer end of a spring leaf of the plane volute spiral spring is curled to form a circular sealing ring, and the circular sealing ring is provided with two fixing holes; the fixing piece is arranged and penetrates through the two fixing holes of the circular sealing ring, and the rear ends of the fixing piece are detachably connected together, so that the outermost ring of the flat spiral spring is fixed. The utility model has the advantages that the flat spiral spring with the circular hook is provided with the fixed hole on the circular closed ring, and the two ends of the flat spiral spring are detachably connected on the outermost ring of the flat spiral spring after the fixed piece passes through the fixed hole, so the flat spiral spring can be prevented from scattering, has simple structure and convenient processing, and solves the problem of difficult processing when riveting connection is adopted; the assembly box can be conveniently installed and directly placed in the assembly box, so that the cost can be saved.

Description

Plane volute spiral spring with circular hook

Technical Field

The utility model relates to a plane spiral spring.

Background

The spiral spring 1 is generally provided with an outer hook so that the spring can bear a torsion force and be adapted to the mounting case. The outer hook is typically a U-shaped or circular hook, typically a circular closing ring 11, see fig. 1, which is adapted to be hung on a cylindrical pin of the assembly box to limit the movement of the spring.

The existing flat spiral spring with circular hook adopts the form that the rivet 5 is connected with the circular closing ring 11 to fix the outer ring of the spiral spring, see fig. 2, or the outer ring of the spiral spring is sleeved with the fixing ring 6 to fix the outer ring of the spring, see fig. 3, so as to prevent the flat spiral spring 1 from bouncing off. The flat spiral spring fixed by riveting is difficult to process, and the outer ring of the flat spiral spring is still used as a fixing piece, so that the material consumption is high and the cost is high. The flat spiral spring fixed by the outer sleeve fixing piece is mounted on the assembly box, and the outer sleeve fixing piece needs to be removed firstly for adapting to the assembly box, so that the outer ring of the flat spiral spring has a safety hazard of scattering.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art not enough and provide a take plane volute spiral spring of circle type hook, its processing is simple and can the snap-on use place.

The utility model provides an above-mentioned problem and the technical scheme who adopts does: the utility model provides a take flat spiral spring of circular hook, its flat spiral spring's spring leaf outer end curls and forms a circular closed circle, characterized by: two fixing holes are formed in the circular sealing ring; the fixing piece is arranged and penetrates through the two fixing holes of the circular sealing ring, and the rear ends of the fixing piece are detachably connected together, so that the outermost ring of the flat spiral spring is fixed.

Preferably, the width of the fixing hole is greater than that of the fixing member, so that the fixing member easily passes through the fixing hole.

Preferably, the two fixing holes are identical in shape and size, so that the processing is convenient.

Preferably, a rectangular closed groove is formed in one end of the fixing part, a T-shaped joint capable of being inserted into the rectangular closed groove is formed in the other end of the fixing part, the T-shaped joint can be inserted into the closed groove, two ends of the fixing part can be detachably connected together, and therefore two ends of the fixing part can be connected and fixed more conveniently.

Compared with the prior art, the utility model has the advantages of: the plane volute spiral spring with the circular hook is provided with the fixing hole on the circular closed ring, and the fixing piece penetrates through the fixing hole and then two ends of the fixing piece are detachably connected to the outermost ring of the plane volute spiral spring, so that the plane volute spiral spring can be prevented from scattering, is simple in structure and convenient to machine, and solves the problem of difficulty in machining when riveting connection is adopted; the assembly box can be conveniently installed and directly placed in the assembly box, so that the cost can be saved.

Drawings

Fig. 1 is a schematic structural view of a conventional flat spiral spring with a circular hook.

Fig. 2 is a schematic structural view of a riveted structure of a circular hook of a conventional spiral flat spring with a circular hook.

Fig. 3 is a schematic structural view of a fixing ring structure of a circular hook of a conventional spiral flat spring with a circular hook.

Fig. 4 is a schematic structural view of a spiral spring with a circular hook according to an embodiment of the present invention.

Fig. 5 is a schematic plan expanded view of the circular closing ring of fig. 4.

Fig. 6 is a side view of fig. 4.

Fig. 7 is a plan view of the fixing member of fig. 4.

Fig. 8 is a schematic structural view of the fixing member of fig. 6 after two ends are connected.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in fig. 4-8, in the spiral flat spring with circular hook, the outer end of the spring leaf of the spiral flat spring 1 is rolled inward to form a circular closed loop 11, the circular closed loop 11 is a circular hook, the circular closed loop 11 is attached to the outermost loop of the spiral flat spring 1, and the circular closed loop 11 is provided with fixing holes, specifically, a first fixing hole 111 and a second fixing hole 112 in this embodiment.

The first fixing hole 111 and the second fixing hole 112 are both rectangular through holes, and the sizes of the two fixing holes are identical, so that the processing is convenient.

In order to fix the outermost coil of the flat spiral spring, a fixing member 3 is further provided.

The fixing member 3 is provided with a rectangular closed slot 31 at one end and a T-shaped tab 32 at the other end for insertion into the rectangular closed slot 31, the T-shaped tab 32 being insertable into the rectangular closed slot 31 to couple the two ends of the fixing member 3 together, see fig. 4, 7 and 8.

The width of the fixing member 3 is smaller than the width of the first fixing hole 111 and the second fixing hole 112 of the circular sealing ring 11, so that one end of the fixing member 3 can conveniently pass through the second fixing hole 112 and the first fixing hole 111 of the circular sealing ring 11 and then is sleeved on the outermost ring of the spiral spring 1, and the T-shaped joint 32 at the other end of the fixing member 3 is inserted into the rectangular sealing groove 31 at one end of the fixing member 3 to connect the two ends of the fixing member 3 together, so as to sleeve the outermost ring of the spiral spring 1 and prevent the spiral spring from scattering, as shown in fig. 4 and 6.

Because the fixing member 3 is closely attached to the outermost ring of the spiral spring 1 through the first fixing hole 111 and the second fixing hole 112, a gap is not generated between the fixing member 3 and the spiral spring, and the fixing member 3 is directly installed in an assembly box of the spiral spring without being taken out during installation and use of the spiral spring, so that the installation of the spiral spring is very convenient.

Although the present invention has been described in detail with reference to the above embodiments, the embodiments are only intended to illustrate specific technical features, technical solutions and technical effects obtained, so as to facilitate the understanding of those skilled in the art, and are not intended to limit the scope of the present invention. Changes and modifications obvious to those skilled in the art from the above technical features and technical solutions all fall within the scope of the present invention.

Claims

1. The utility model provides a take flat spiral spring of circular hook, its flat spiral spring's spring leaf outer end curls and forms a circular closed circle, characterized by: two fixing holes are formed in the circular sealing ring; the fixing piece is arranged and penetrates through the two fixing holes of the circular sealing ring, and the rear ends of the fixing piece are detachably connected together, so that the outermost ring of the flat spiral spring is fixed.

2. The spiral spring with circular hook as claimed in claim 1, wherein: the width of the fixing hole is larger than that of the fixing piece.

3. A spiral spring with a circular hook as claimed in claim 1 or 2, wherein: the two fixing holes are identical in shape and size.

4. A spiral spring with a circular hook as claimed in claim 1 or 2, wherein: one end of the fixing piece is provided with a rectangular closed groove, the other end of the fixing piece is provided with a T-shaped joint which can be inserted into the rectangular closed groove, and the T-shaped joint is inserted into the closed groove so that the two ends of the fixing piece are detachably connected together.