Double-sleeve waterproof structure of square motor
By employing a double-layer waterproof structure and an annular raised groove design, combined with triple waves in the shaft perforation and lubricating grease, the waterproofing problem of square motors is solved, improving waterproofing performance and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUZHOU SHB AUTOMOTIVE APPLIANCE CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-28
AI Technical Summary
Existing square motors are prone to moisture, resulting in insufficient waterproof performance.
It adopts a double-sleeve structure with an upper waterproof sleeve and a lower waterproof sleeve, combined with an annular protrusion and groove design, a triple wave structure with shaft through holes and lubricating grease, and replaces waterproof ball bearings with straight bearings.
It improves the waterproof performance of square motors, reduces friction loss and component costs, and has a simple structure that is easy to manufacture.
Smart Images
Figure CN224178001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a double-layer waterproof structure for a square motor. Background Technology
[0002] The square motors used in car door handles are easily affected by the external environment. Air humidity and seasonal changes can easily cause water to enter the square motor and cause it to become damp, leading to malfunctions. Therefore, how to waterproof square motors has always been an urgent problem for motor manufacturers to solve. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a double-layer waterproof structure for square motors, which addresses the problem that existing square motors are prone to moisture damage, thereby solving the waterproofing problem of square motors.
[0004] The technical problem to be solved by this utility model can be achieved through the following technical solution:
[0005] A double-walled waterproof structure for a square motor includes an upper waterproof sleeve and a lower waterproof sleeve, wherein the lower waterproof sleeve is fitted over the end of the square motor for inserting a terminal block, and the upper waterproof sleeve is fitted over the end of the square motor having an output shaft; a shaft through hole is provided at the top of the upper waterproof sleeve, and the output shaft of the square motor passes through the entire square motor and through the shaft through hole.
[0006] In a preferred embodiment of this utility model, two upper annular protrusions are provided on the inner wall of the upper waterproof sleeve, and two upper annular grooves are provided on the housing of the square motor corresponding to the two upper annular protrusions. Each upper annular protrusion is embedded in the corresponding upper annular groove to prevent the upper waterproof sleeve from falling off and to increase waterproofness.
[0007] In a preferred embodiment of this utility model, two lower annular protrusions are provided on the inner wall of the lower waterproof sleeve, and two lower annular grooves are provided on the housing of the square motor corresponding to the two lower annular protrusions. Each lower annular protrusion is embedded in the corresponding lower annular groove to prevent the lower waterproof sleeve from falling off and to increase waterproofness.
[0008] In a preferred embodiment of this utility model, the upper annular groove, the lower annular groove, the upper annular protrusion, and the lower annular protrusion are all adapted semi-circular shapes.
[0009] In a preferred embodiment of the present invention, the wall of the shaft through hole has triple waves, and lubricating grease is stored in the recesses of the triple waves.
[0010] In a preferred embodiment of the present invention, an avoidance groove is provided on the inner surface of the bottom of the lower waterproof sleeve at the position corresponding to the output shaft.
[0011] By adopting the above technical solution, this utility model can solve the waterproofing problem of square motors, and has the advantages of simple structure, convenient installation, easy production, fewer processes, and greatly reduced production costs. It also has the following characteristics:
[0012] 1. The hole wall of the shaft through-hole has triple waves, which reduces the contact area between the shaft through-hole and the output shaft, thus reducing friction and minimizing performance loss in the square motor. Lubricating grease is stored in the recesses of the triple waves, reducing energy loss due to friction and significantly improving the waterproofing of the shaft end. Furthermore, a straight bearing can replace the original waterproof ball bearing at the output end of the square motor, greatly reducing component costs, simplifying the structure, and facilitating production.
[0013] 2. An avoidance groove is provided on the inner surface of the bottom of the lower waterproof sleeve corresponding to the position of the output shaft, so that the output shaft cannot rub against the bottom of the lower waterproof sleeve, thus avoiding wear. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the assembly of the double-layer waterproof structure of the square motor of this utility model.
[0015] Figure 2 This is an exploded view of the double-layer waterproof structure of the square motor of this utility model.
[0016] Figure 3 This is a schematic diagram showing the fit between the upper waterproof sleeve and the output shaft of this utility model.
[0017] Figure 4 This is a schematic diagram showing the fit between the waterproof sleeve of this utility model and the housing of the square motor.
[0018] Figure 5 This is one of the schematic diagrams showing the fit between the lower waterproof sleeve and the housing of the square motor of this utility model.
[0019] Figure 6 This is the second schematic diagram showing the fit between the lower waterproof sleeve and the housing of the square motor of this utility model. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0021] See Figures 1 to 6The figure shows a double-sleeved waterproof structure for a square motor, comprising an upper waterproof sleeve 100 and a lower waterproof sleeve 300. The lower waterproof sleeve 300 is fitted onto the end of the square motor 200 used for inserting the terminal block, and the upper waterproof sleeve 100 is fitted onto the end of the square motor 200 having an output shaft 210. A shaft through hole 110 is provided on the top of the upper waterproof sleeve 100, and the output shaft 210 of the square motor 200 passes through the entire square motor and through the shaft through hole 210.
[0022] The features of this utility model are: two upper annular protrusions 120 are provided on the inner wall of the upper waterproof sleeve 100, and two upper annular grooves 221 are provided on the housing 220 of the square motor 200 corresponding to the two upper annular protrusions 120. Each upper annular protrusion 120 is embedded in the corresponding upper annular groove 221 to prevent the upper waterproof sleeve 100 from falling off, and also to increase the waterproofness.
[0023] Two lower annular protrusions 310 are provided on the inner wall of the lower waterproof sleeve 300. Two lower annular grooves 222 are provided on the housing 220 of the square motor 200 corresponding to the two lower annular protrusions 310. Each lower annular protrusion 310 is embedded in the corresponding lower annular groove 222 to prevent the lower waterproof sleeve 300 from falling off and to increase waterproofness.
[0024] The upper annular groove 221, the lower annular groove 222, the upper annular protrusion 120, and the lower annular protrusion 310 are all matching semi-circular shapes.
[0025] Furthermore, the hole wall of the shaft through hole 110 has triple waves, which reduces the contact area between the shaft through hole 110 and the output shaft 210, thus reducing friction and minimizing performance loss to the square motor. Lubricating grease is stored in the recesses of the triple waves, reducing energy loss due to friction and significantly improving the waterproof capability of the shaft end. Simultaneously, a straight bearing can replace the original waterproof ball bearing at the output end of the square motor, greatly reducing component costs, simplifying the structure, and facilitating production.
[0026] An avoidance groove 320 is provided on the inner surface of the bottom of the lower waterproof sleeve 300 at the position corresponding to the output shaft 210, so that the output shaft 210 cannot rub against the bottom of the lower waterproof sleeve 300, thus avoiding wear.
Claims
1. A double-layer waterproof structure for a square motor, characterized in that, include: An upper waterproof sleeve and a lower waterproof sleeve are provided, wherein the lower waterproof sleeve is fitted over the end of the square motor for inserting the terminal block, and the upper waterproof sleeve is fitted over the end of the square motor having an output shaft; a shaft through hole is provided at the top of the upper waterproof sleeve, and the output shaft of the square motor passes through the entire square motor and through the shaft through hole.
2. The double-layer waterproof structure of a square motor according to claim 1, characterized in that, Two upper annular protrusions are provided on the inner wall of the upper waterproof sleeve, and two upper annular grooves are provided on the housing of the square motor corresponding to the two upper annular protrusions. Each upper annular protrusion is embedded in the corresponding upper annular groove to prevent the upper waterproof sleeve from falling off and to increase waterproofness.
3. The double-layer waterproof structure of a square motor according to claim 2, characterized in that, Two lower annular protrusions are provided on the inner wall of the lower waterproof sleeve, and two lower annular grooves are provided on the housing of the square motor corresponding to the two lower annular protrusions. Each lower annular protrusion is embedded in the corresponding lower annular groove to prevent the lower waterproof sleeve from falling off and to increase waterproofness.
4. The double-layer waterproof structure of a square motor according to claim 3, characterized in that, The upper annular groove, lower annular groove, upper annular protrusion, and lower annular protrusion are all matched semi-circular shapes.
5. The double-layer waterproof structure of a square motor according to claim 1, characterized in that, The wall of the shaft through hole has triple waves, and lubricating grease is stored in the recesses of the triple waves.
6. The double-layer waterproof structure of a square motor according to claim 1, characterized in that, An avoidance groove is provided on the inner surface of the bottom of the lower waterproof sleeve at the position corresponding to the output shaft.