一种弹性销及其锁紧结构
By employing a synergistic design of welding nuts, clamping nuts, and springs, the problem of loosening of elastic pins in fitness equipment due to frequent insertion and removal is solved, achieving stable locking and precise engagement, thereby improving the service life and ease of operation of the fitness equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN EVERE SPORTS GOODS
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
The existing flexible pins in fitness equipment require frequent insertion and removal, which causes the knobs and pins to loosen and become unable to be accurately engaged and locked.
The design employs a combination of a welded nut, a clamping nut, and a spring. When the pin body is inserted into the sleeve socket, the cooperation of the welded nut and the clamping nut, along with the pushing force of the spring, ensures stable locking. The elastic force of the spring pushes the top sleeve and the pin body towards the socket, preventing loosening.
It achieves stable locking of the pin, avoids loosening caused by frequent insertion and removal, improves the reliability and service life of the structure, simplifies the operation steps, and achieves precise insertion and quick locking.
Smart Images
Figure CN224515595U_ABST
Abstract
Claims
1. An elastic pin and its locking structure, the elastic pin is inserted and installed on a sleeve of a fitness device, the sleeve is provided with a socket, characterized in that: The device includes a welding nut, a clamping nut, a pin body, a top sleeve, and a spring. The welding nut is welded to the socket of the sleeve. The clamping nut is installed in the opening of the welding nut and has an internal and external communicating channel. The diameter of the channel is adapted to the pin body. The pin body enters the welding nut along the channel and then inserts into the socket of the sleeve. The top sleeve is disposed on the pin body and is placed inside the welding nut. The spring is sleeved on the pin body and is disposed between the clamping nut and the top sleeve. When the pin is pulled out, the top sleeve approaches the clamping nut and compresses the spring. When the pin is released, the spring pushes the top sleeve away from the clamping nut and pulls the pin body into the socket.
2. A resilient pin and locking structure as claimed in claim 1, wherein: The welding nut is a tubular structure, with one end welded to the socket of the sleeve, its pipe communicating with the socket, and the other end installed with a clamping nut. The clamping nut has a limiting part that abuts against its pipe opening and a main body part installed inside the pipe, and the channel is located in the main body part.
3. A resilient pin and locking structure as claimed in claim 2, wherein: The compression nut is welded, or its outer wall and the inner wall of the welded nut are provided with mutually matching threaded structures for threaded installation and fixation.
4. The elastic pin and its locking structure as described in claim 2, characterized in that: The pin body includes a knob, a pin body, and a positioning pin. The knob is mounted on the pin body. The pin body has a stepped portion for engaging with and limiting the clamping nut, and a mounting hole. When the spring pushes the pin body into the insertion port, the stepped portion abuts against the limiting portion of the clamping nut to restrict its further entry into the welding nut. The positioning pin is inserted into the mounting hole and has a mounting portion. The top sleeve is mounted on the mounting portion.
5. The elastic pin and its locking structure as described in claim 4, characterized in that: The sleeve is movably fitted with a movable tube, which has multiple pin holes on the side facing the socket. The positioning pin of the pin body passes through the socket and is inserted into the pin hole to restrict the movement of the movable tube. When it is removed from the pin hole, it is unlocked.
6. A resilient pin and locking structure as claimed in claim 1, wherein: The top sleeve has a threaded hole that is open to both the inside and outside. A set screw is threaded into the threaded hole. The spring is embedded in the top sleeve, and the set screw clamps the spring and the pin body.