The utility model relates to elastic parts, in particular to a double torsion spring fixing assembly.

Background technique:

Spring has a wide range of uses and is almost an indispensable part of ordinary machines. It will elastically deform under the action of external force, store deformation energy and release it randomly. Torsion springs among spring types refer to springs that rely on torsional elasticity to transmit force or motion. One of them is a double torsion spring, also known as a twin torsion spring. As the name suggests, it consists of two springs.

For double-stranded torsion springs, there is a problem of tilting during movement and being unable to be effectively fixed. Especially when the movement of the two hubs is not synchronized, the tilting phenomenon will be more serious, affecting the work of the mechanism, and even causing the mechanism to be scrapped.

Technical implementation elements:

In view of the above problems, the utility model overcomes the shortcomings and proposes a double torsion spring fixing component.

The technical solutions adopted by the utility model are as follows.

A double torsion spring fixing assembly includes a double torsion spring and a clamp. The double torsion spring includes a first spring and a second spring. There is a U-shaped hub between the first spring and the second spring body. The U-shaped hub includes a first connecting arm, a hub and a second connecting arm connected in sequence, the first connecting arm is connected to the first end of the first spring, and the second connecting arm is connected to the second spring. The other end of the fixing device has a second limiting groove, the two second limiting grooves are aligned with the first connecting arm and the second connecting arm respectively, and the first limiting groove is aligned with the wheel hub.

The clamp in this application can work with the connecting part through the first limiting groove, work with the first connecting arm and the second connecting arm through two second limiting grooves, and use three fixing principles to ensure the double torsion spring assembly It is stable and not easy to fall off. Symmetry is maintained even if the two spring bodies are subjected to different forces (asynchronous motion).

Optionally, the corresponding fastener also has mounting holes through which it matches the external part.

Optional: Two second limiting grooves are respectively provided on the left and right sides of the fixing device, and the first limiting groove runs through the left and right sides of the fixing device.

Optionally, the side wall of the fixing device has two opposite protrusions, and the two opposite protrusions form the second limiting groove.

(Optional) The fixtures include restraints and mounting sections. The first and second limiting grooves are both located in the limiting part, the first limiting groove is located at the first end of the limiting part, and the second limiting groove is located at the second end of the limiting part. The mounting section is connected to the first end of the restricted section.

Optionally, the mounting part forms a limiting and L-shaped structure, the mounting part has a mounting hole, and the clamp cooperates with external parts through the mounting hole.

The L-shaped structure facilitates the assembly and fixation of fixed components, and the direction of the installation part can be determined as needed during actual operation.

Optionally, the second end of the first spring body has a first mounting foot, and the second end of the second spring body has a second mounting foot. The double torsion spring is installed in the corresponding structure through the first mounting foot and the second mounting foot.

The beneficial effect of the present utility model is that the fixing device of the present application can work with the hub through the first limiting groove, and can work with the first connecting arm and the second connecting arm through two second limiting grooves, using three fixing principles. After the double torsion spring is assembled, it is guaranteed to be stable and not easy to fall off. Even if the two spring bodies are subjected to different forces (asynchronous movement), symmetry can be maintained.