一种汽车用可伸缩式万向节
By employing a flat key and keyway design between the universal joint connection end and the connecting sleeve, combined with the structure of the reinforcing platform, the problems of unreliability and inconvenience in existing universal joint connections are solved, achieving a more stable and convenient connection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DEMAI MASCH CO LTD
- Filing Date
- 2025-10-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing telescopic universal joints are not reliable enough in radial transmission and axial extension, and the connection is not convenient enough.
The first and second universal joint forks are connected to the connecting sleeve via a flat key and a keyway to achieve radial transmission. During connection, the flat key and keyway, the connecting shaft and the long slot are used for guidance. A reinforcing platform is set on the outside of the connecting end to enhance the connection strength. During connection, the assembly can be completed simply by aligning the flat key and keyway, inserting it into the connecting sleeve and inserting the connecting shaft.
It improves the reliability and convenience of universal joint connections, ensures the stability and strength of the extension and retraction process, and simplifies the connection process.
Smart Images
Figure CN224515716U_ABST
Abstract
Claims
1. A telescopic universal joint for an automobile, comprising a first universal joint yoke (1) and a second universal joint yoke (2), characterized in that, The bottom end of the first universal joint fork (1) has a connecting end (3). The outer periphery of the connecting end (3) has two pairs of reinforcing platforms (4) arranged in a cross shape. A keyway (5) is provided on one pair of reinforcing platforms (4). The connecting end (3) also has a long groove (6). The other pair of reinforcing platforms (4) are respectively connected to the two sides of the long groove (6). The top end of the second universal joint fork (2) has a connecting sleeve (7). The connecting sleeve (7) has a flat key (8) corresponding to the two keyways (5). The connecting sleeve (7) also has a pair of connecting holes corresponding to the long groove (6). The connecting end (3) is inserted into the connecting sleeve (7). The two flat keys (8) are respectively matched with the corresponding keyways (5). A connecting shaft (9) passes through the two connecting holes and the long groove (6) to connect the connecting end (3) and the connecting sleeve (7).
2. The retractable universal joint for an automobile as set forth in claim 1, characterized in that, The connecting end (3) is a hollow connecting end (3), and a spring (10) is provided inside the connecting end (3). The spring (10) abuts against the top of the connecting end (3) and the connecting shaft (9).
3. A retractable universal joint for a vehicle as claimed in claim 2, wherein, The bottom end of the connecting end (3) is open, and the bottom end of the connecting end (3) also has a ring (11) with external threads. One end of the long groove (6) passes through the ring (11), and a limit ring (12) is screwed onto the ring (11).
4. A retractable universal joint for a vehicle as claimed in claim 3, wherein, Both ends of the connecting shaft (9) pass through the connecting sleeve (7) and are fixed with nuts (13).
5. A retractable universal joint for a vehicle as claimed in claim 4, wherein, The outer side of the connecting sleeve (7) also has a reinforcing block (14) with a corresponding connecting hole, and the connecting hole passes through the reinforcing block (14).
6. A retractable universal joint for a vehicle as claimed in claim 5, wherein, The length of the keyway (5) is less than the length of the inner hole of the connecting end (3).
7. A retractable universal joint for a vehicle as claimed in claim 6, wherein, The first universal joint fork (1) and the connecting end (3) are welded together.
8. A retractable universal joint for a vehicle as claimed in claim 7, wherein, The second universal joint fork (2) and the connecting sleeve (7) are welded together as one unit.
9. A retractable universal joint for a vehicle as claimed in claim 8, wherein, The connecting end (3) and the two pairs of reinforcing platforms (4) are integrally formed structures.