Structure for blocking vibration of wiper motor rotor
By using a rubber gasket with an interference fit between the gasket and the limiting groove and fixing it with bolts in the wiper motor to form a buffer structure, the problem of rotor vibration being transmitted to the gearbox is solved, thereby reducing noise and wear and extending the service life of the wiper system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-27
AI Technical Summary
In existing wiper motors, the ball bearings on the rotor are directly and rigidly connected to the metal bearing retainer, causing vibrations to be transmitted to the gearbox without any buffering during high-speed rotation. This amplifies the vibrations and generates noise, affecting the quietness of the vehicle interior, accelerating wear, and shortening the service life.
The rubber gasket is interference-fitted with the limiting groove, and the rubber gasket and bearing retainer are fixed with bolts. The elasticity of the rubber gasket absorbs vibration, and the bearing retainer limits the ball bearing to prevent displacement. It is fixed to the gearbox with bolts to form a buffer structure.
It effectively absorbs rotor vibration, reduces noise, avoids wear, improves the service life and stability of the wiper system, and ensures driving safety.
Smart Images
Figure CN224054022U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wiper motor rotor technical field, especially relate to a barrier wiper motor rotor vibration structure. BACKGROUND
[0002] The wiper system is important to ensure the clear vision of the driver when the car drives in the rainy day, and the stability of the wiper motor as the core component of the system directly affects the performance of the wiper system, at present, most wiper motors adopt the rigid connection of the ball bearing on the rotor and the metal bearing ring, even if the extremely tiny axial vibration in the high-speed rotation process of the rotor, the bearing ring will be transmitted to the gear box without buffer, the rigid connection mode not only amplifies the vibration, but also makes the vibration transmitted in the form of noise, which seriously affects the quietness in the car, and accelerates the wear of the bearing and the related components of the gear box, shortens the overall service life of the wiper motor, and even has negative effects on the wiping stability of the wiper system, which threatens the driving safety, therefore, we propose a barrier wiper motor rotor vibration structure. SUMMARY
[0003] In order to solve the above problems, the utility model provides a barrier wiper motor rotor vibration structure, the utility model solves the rigid connection of the ball bearing on the rotor and the metal bearing ring of most wiper motors, even if the extremely tiny axial vibration in the high-speed rotation process of the rotor, the bearing ring will be transmitted to the gear box without buffer, the rigid connection mode not only amplifies the vibration, but also makes the vibration transmitted in the form of noise, which seriously affects the quietness in the car, and accelerates the wear of the bearing and the related components of the gear box, shortens the overall service life of the wiper motor, and even has negative effects on the wiping stability of the wiper system.
[0004] The barrier wiper motor rotor vibration structure in the utility model, including the gear box, the gear box one side inserts the rotor, the rotor both ends all are through the ball bearing with the gear box swing joint, the gear box is located the limit slot that opens outside the rotor, be equipped with the rubber pad piece in the limit slot, the rubber pad piece is equipped with the bearing ring away from the gear box side, the gear box is located the screw hole that is equipped with in the limit slot both sides, the rubber pad piece and the bearing ring all are equipped with the connecting hole that matches with the screw hole, the screw hole and the connecting hole insert the bolt.
[0005] In the above scheme, the rotor is fixedly connected with the connecting seat on the side outside the gear box.
[0006] In the above scheme, the bolt is provided with an internal hexagonal groove at one end of the screw head.
[0007] The gear box is located in the limiting groove, and the two sides of the gear box are respectively provided with a positioning rod.
[0008] The rotor is provided with a helical tooth at one end in the gear box.
[0009] The gear box is provided with a motor mounting hole.
[0010] The advantages and beneficial effects of the utility model are as follows: the utility model provides a vibration structure for blocking a wiper motor rotor, the rubber pad is clamped in the limiting groove, the rubber pad is in interference fit with the inner wall of the limiting groove, so that the rubber pad can be initially installed on the gear box, the rubber pad has good elasticity and buffering performance, can effectively absorb the vibration generated by the rotor during operation, reduces the noise generated by the vibration, avoids the abrasion caused by the vibration to the inside of the gear box, the bearing retainer can limit the ball bearing, prevents the displacement of the ball bearing during operation, through the cooperation between the bolt and the threaded hole, the bolt can fix and install the bearing retainer and the rubber pad on the gear box, the vibration structure is convenient to install, has good buffering effect, effectively reduces the noise generated by the vibration, avoids the abrasion caused by the vibration to the inside of the gear box, and prolongs the service life of the wiper system. BRIEF DESCRIPTION OF DRAWINGS
[0011] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0012] Fig. 1 It is a structural schematic view of the utility model;
[0013] Fig. 2 It is an explosion structural schematic view of the utility model;
[0014] Fig. 3 It is a sectional view of the utility model.
[0015] In the drawing: 1, gear box 2, rotor 3, ball bearing 4, limiting groove 5, rubber pad 6, bearing retainer 7, threaded hole 8, connecting hole 9, bolt 10, connecting seat 11, internal hexagonal groove 12, positioning rod 13, positioning hole 14, helical tooth 15, motor mounting hole. DETAILED DESCRIPTION
[0016] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model.
[0017] As shown in Figs. 1-3 The utility model relates to a kind of barrier wiper motor rotor vibration structures, including gear box 1, gear box 1 side is inserted with rotor 2, both ends of rotor 2 are movably connected with gear box 1 by ball bearing 3, the setting of ball bearing 3 makes that rotor 2 can rotate inside gear box 1, gear box 1 is located outside rotor 2 and is equipped with limit groove 4, rubber pad 5 is equipped in limit groove 4, rubber pad 5 is clamped in limit groove 4 inside, rubber pad 5 and limit groove 4 inner wall interference fit, so that rubber pad 5 can be initially installed on gear box 1, rubber pad 5 has good elasticity and buffering performance, can effectively absorb the vibration generated in the operation process of rotor 2, rubber pad 5 is equipped with bearing collar 6 away from gear box 1 side, bearing collar 6 can limit ball bearing 3, prevent ball bearing 3 from displacement in the working process, gear box 1 is equipped with screw hole 7 in both sides in limit groove 4, rubber pad 5 and bearing collar 6 are all equipped with connecting hole 8 matched with screw hole 7, screw hole 7 and connecting hole 8 are inserted with bolt 9, bolt 9 is equipped with outer thread matched with screw hole 7, by the mutual cooperation between bolt 9 and screw hole 7, so that bolt 9 can be fixedly installed bearing collar 6 and rubber pad 5 on gear box 1.
[0018] The rotor 2 is fixedly connected with the connecting seat 10 on one side outside the gear box 1.
[0019] The bolt 9 is provided with an internal hexagonal recess 11 at one end of the screw head.
[0020] The gear box 1 is provided with a positioning rod 12 on both sides in the limit groove 4, and the rubber pad 5 and the bearing collar 6 are both provided with a positioning hole 13 matched with the positioning rod 12. During installation, the positioning rod 12 and the positioning hole 13 are matched with each other, which can quickly and accurately guide the installation position of each component and effectively avoid installation errors.
[0021] The rotor 2 is provided with a helical tooth 14 at one end in the gear box 1. Through the cooperation of the helical tooth 14 and other gears in the gear box 1, power transmission and conversion are realized, and it is ensured that the wiper motor can stably and efficiently drive the wiper system to work.
[0022] The gear box 1 is provided with a motor mounting hole 15 above, which facilitates the installation of the motor on the gear box 1. The motor mounting hole 15 provides a stable power source for the entire wiper motor.
[0023] Specifically, in the utility model, the rubber gasket 5 is clamped in the limiting groove 4, the rubber gasket 5 is interference fit with the inner wall of the limiting groove 4, so that the rubber gasket 5 can be initially installed on the gear box 1, the rubber gasket 5 has good elasticity and buffering performance, can effectively absorb the vibration generated in the operation process of the rotor 2, reduces the noise generated by vibration, avoids the abrasion caused by vibration to the inside of the gear box 1, the bearing collar 6 can limit the ball bearing 3, prevents the displacement of the ball bearing 3 in the working process, the bolt 9 is equipped with the external thread matched with the threaded hole 7, through the mutual cooperation between the bolt 9 and the threaded hole 7, the bolt 9 can fix and install the bearing collar 6 and the rubber gasket 5 on the gear box 1, the positioning rod 12 and the positioning hole 13 are mutually matched, can quickly and accurately guide the installation position of each component, effectively avoids installation error.
[0024] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A structure for damping the vibrations of a wiper motor rotor, comprising a gear box (1), characterized in that, The gear box (1) is inserted with a rotor (2) on one side, both ends of the rotor (2) are movably connected with the gear box (1) through ball bearings (3), the gear box (1) is provided with a limiting groove (4) outside the rotor (2), a rubber gasket (5) is arranged in the limiting groove (4), the rubber gasket (5) is provided with a bearing collar (6) away from the gear box (1) on one side, both sides of the gear box (1) in the limiting groove (4) are provided with threaded holes (7), the rubber gasket (5) and the bearing collar (6) are provided with connecting holes (8) matched with the threaded holes (7), and the threaded holes (7) and the connecting holes (8) are inserted with bolts (9).
2. The rain sensor vibration damping structure of claim 1, wherein The rotor (2) is fixedly connected with a connecting seat (10) on one side outside the gear box (1).
3. The rain barrier wiper motor rotor vibration dampening structure of claim 1, wherein, The bolt (9) is provided with an internal hexagonal groove (11) on one end of the screw head.
4. The rain sensor vibration dampening structure of claim 1, wherein: Both sides of the gear box (1) in the limiting groove (4) are provided with positioning rods (12), and the rubber gasket (5) and the bearing collar (6) are provided with positioning holes (13) matched with the positioning rods (12).
5. The rain barrier wiper motor rotor vibration dampening structure of claim 1, wherein, The rotor (2) is provided with helical teeth (14) on one end in the gear box (1).
6. A rain-repellent wiper motor rotor vibration-damping structure according to claim 1, characterized in that, The gear box (1) is provided with a motor mounting hole (15) above.