Anti-falling structure of transmission needle bearing
By installing a rear bearing baffle on the mounting end face of the rear bearing of the intermediate shaft and fixing it with hexagonal countersunk screws, the problem of the rear bearing of the intermediate shaft coming off under high torque and high speed is solved, thus improving the reliability of the transmission.
Patent Information
- Application Number
- CN202521395672.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-07-04
AI Technical Summary
The intermediate shaft rear bearing is prone to dislodging under long-term high torque and high speed, leading to failure.
Install a rear bearing baffle on the mounting end face of the rear bearing of the intermediate shaft and fix it with an internal hexagonal countersunk screw to prevent the rear bearing of the intermediate shaft from coming out.
This effectively prevents the rear bearing of the intermediate shaft from loosening under high torque and high speed, thus improving the reliability and service life of the transmission.
Smart Images
Figure CN223964848U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an anti-disengagement structure for a transmission needle roller bearing, belonging to the technical field of automotive transmission equipment. Background Technology
[0002] Currently, the torque of automotive transmission engines has generally increased, and the torque load of the transmission has also increased accordingly. Under the influence of factors such as long-term high torque and high speed, the intermediate shaft rear bearing may dislodge from the rear body bearing hole, thus causing the intermediate shaft rear bearing to fail. Utility Model Content
[0003] The purpose of this utility model is to provide an anti-disengagement structure for a transmission needle roller bearing. An intermediate shaft rear bearing baffle is installed on the mounting end face of the intermediate shaft rear bearing using an internal hexagonal countersunk screw. The intermediate shaft rear bearing baffle restricts the intermediate shaft rear bearing and prevents it from disengaging, thus solving the problems existing in the background art.
[0004] The technical solution of this utility model is:
[0005] An anti-disengagement structure for a transmission needle roller bearing includes a rear body, an intermediate shaft rear bearing baffle, an intermediate shaft rear bearing, and a countersunk head screw. The intermediate shaft rear bearing is press-fitted onto the rear body, the intermediate shaft rear bearing baffle mates with the intermediate shaft rear bearing, and the intermediate shaft rear bearing baffle is fixed to the rear body by the countersunk head screw.
[0006] Furthermore, the rear bearing of the intermediate shaft is interference-fitted with the rear body.
[0007] Furthermore, the rear body is provided with bearing positions and bolt holes that mate with the intermediate shaft rear bearing and the internal hexagonal countersunk screws.
[0008] The beneficial effect of this utility model is that an intermediate shaft rear bearing baffle is installed on the mounting end face of the intermediate shaft rear bearing using an internal hexagonal countersunk screw. The intermediate shaft rear bearing baffle restricts the intermediate shaft rear bearing and prevents it from loosening under the influence of factors such as long-term high torque and high speed. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 for Figure 1 AA section view;
[0011] Figure 3 for Figure 1 QQ cross-sectional view;
[0012] In the diagram: 1. Rear body; 2. Intermediate shaft rear bearing baffle; 3. Intermediate shaft rear bearing; 4. Socket head cap screw. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings and examples.
[0014] See attached document Figure 1 , 2 3. An anti-disengagement structure for a transmission needle roller bearing, comprising a rear body 1, an intermediate shaft rear bearing baffle 2, an intermediate shaft rear bearing 3, and internal hexagonal countersunk screws 4. The intermediate shaft rear bearing 3 is press-fitted onto the rear body 1, the intermediate shaft rear bearing baffle 2 cooperates with the intermediate shaft rear bearing 3, and the intermediate shaft rear bearing baffle 2 is fixed to the rear body 1 by two internal hexagonal countersunk screws 4.
[0015] In this embodiment, refer to the appendix Figure 1 , 2 3. The anti-detachment structure includes a rear body 1, an intermediate shaft rear bearing baffle 2, an intermediate shaft rear bearing 3, and hexagonal countersunk screws 4. The rear body 1 is provided with bearing positions and bolt holes that mate with the intermediate shaft rear bearing 3 and the hexagonal countersunk screws 4. During installation, the intermediate shaft rear bearing 3 is first pressed onto the rear body 1, and the intermediate shaft rear bearing 3 and the rear body 1 are made to have an interference fit. Then, the intermediate shaft rear bearing baffle 2 is installed onto the rear body 1 through two hexagonal countersunk screws 4 to restrict the intermediate shaft rear bearing 3, thereby preventing the intermediate shaft rear bearing 3 from detaching and causing failure.
Claims
1. A demating structure of a variable transmission needle bearing, characterized by: It comprises a rear body (1), a rear bearing baffle (2) of the intermediate shaft, a rear bearing (3) of the intermediate shaft and a hex socket head cap screw (4), the rear bearing (3) of the intermediate shaft is press-fitted on the rear body (1), the rear bearing baffle (2) of the intermediate shaft is matched with the rear bearing (3) of the intermediate shaft, and the rear bearing baffle (2) of the intermediate shaft is fixed on the rear body (1) through the hex socket head cap screw (4).
2. The anti-extraction structure of a variable transmission needle bearing according to claim 1, characterized in that: The rear bearing (3) of the intermediate shaft is matched with the rear body (1) in an interference clearance.
3. A demounting prevention structure of a variable transmission needle bearing according to claim 1 or 2, characterized in that: The rear body (1) is provided with a bearing position and a bolt hole matched with the rear bearing (3) of the intermediate shaft and the hex socket head cap screw (4).