Push rod motor anti-locking structure
By adding a lubricating pad and embedding solid lubricant at the end of the lead screw of the push rod motor near the motor, the problem of easy jamming of the push rod was solved, the smoothness and reliability of seat adjustment were achieved, the coefficient of friction was reduced, and the adaptability and wear resistance of the structure were improved.
Patent Information
- Application Number
- CN202520521325.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-24
AI Technical Summary
Traditional pushrod motors are prone to jamming under frequent, heavy loads or extreme conditions, affecting the flexibility and accuracy of seat adjustment, and may also cause noise and component damage.
A lubricating pad is added to the end of the lead screw of the push rod motor near the motor. The lubricating pad has a perforated structure and is inlaid with solid lubricant to form a lubricating film to reduce the coefficient of friction and prevent jamming.
It effectively prevents the push rod from jamming, improves the smoothness and reliability of seat adjustment, reduces maintenance frequency, and adapts to various temperature and humidity conditions.
Smart Images
Figure CN223829172U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a high adjustment mechanism technical field of automobile seat, especially relates to a push rod motor anti-lock structure. BACKGROUND
[0002] In the modern automobile manufacturing industry, with the increasing demand of consumers for driving and riding comfort, the adjustment function of automobile seat becomes increasingly important. Among them, the height adjustment mechanism of the seat as one of the key components, not only requires stable and reliable adjustment performance, but also needs to ensure smooth operation and low maintenance cost under long-term use. Push rod motor as a kind of efficient, accurate driving device, is widely used in the high adjustment mechanism of automobile seat, through the motor drive screw rotation in its interior, and then drive push rod moves along the screw axial, realize the accurate adjustment of seat height.
[0003] However, in practical application, the traditional push rod motor structure has some inherent technical problems, especially when the push rod works under frequent, heavy load or extreme environmental conditions, it is easy to appear lock phenomenon. Especially when the push rod moves to the limit position of the screw, the push rod and the motor are tightly held, and the lock phenomenon is particularly prone to occur. Locking will not only affect the flexibility and accuracy of seat adjustment, but also may cause noise, component damage and even failure of the whole adjustment system, which seriously affects the user experience. CONTENT OF THE UTILITY MODEL
[0004] In view of the problems existing in the prior art, the utility model aims at providing a push rod motor anti-lock structure to solve the problem that the push rod is easy to lock with the motor in the seat high adjustment mechanism.
[0005] In order to realize the above purpose, the utility model provides a push rod motor anti-lock structure, which comprises a motor, a screw rod and a push rod, the screw rod is fixed on the output end of the motor, the push rod is hollow tubular structure, which is screwed on the screw rod, the end of the screw rod close to the motor is provided with a lubricating gasket, the lubricating gasket is fixed on the motor, and the inner ring of the lubricating gasket does not affect the rotation of the screw rod, a plurality of hole structures are arranged on one side of the lubricating gasket close to the push rod, and solid lubricant is embedded in the hole structure, when the push rod is driven to move and contact with the lubricating gasket, the lubricating gasket can form sliding fit with the push rod, so as to avoid the lock of the push rod.
[0006] In the above scheme, a plurality of hole structures are arranged on one side of the lubricating gasket close to the push rod along the circumference, and the hole structure is a blind hole structure. The blind hole structure provides a stable storage space for the solid lubricant. When the push rod is driven to contact with the lubricating gasket, the solid lubricant can be released on the contact surface in time and uniformly, forming a thin lubricating film. The lubricating film can significantly reduce the friction coefficient between the push rod and the lubricating gasket, so as to avoid the lock of the push rod.
[0007] In the above scheme: the lubricating gasket is based on high-strength brass, which has high strength and hardness, can withstand large load and impact force, and has good self-lubricating property.
[0008] In the above scheme: the solid lubricant is graphite or MoS2, which has excellent lubricating performance.
[0009] In the above scheme: two counterbores are arranged on one side of the lubricating gasket close to the push rod, and screws are arranged in the counterbores, and the lubricating gasket is fixed on the motor through the screws. The design of the counterbores enables the screws to be embedded in the interior of the lubricating gasket, thereby avoiding the problem of space occupation caused by the protrusion of the screws on the surface of the lubricating gasket.
[0010] In the above scheme: a plurality of annular hole structures are arranged on one side of the lubricating gasket close to the push rod from inside to outside, and the sizes of the annular hole structures are different to match lubricants of different sizes.
[0011] In the above scheme: a plurality of annular hole structures are arranged on one side of the lubricating gasket close to the push rod from inside to outside, and the sizes of the annular hole structures are different to match lubricants of different sizes.
[0012] The beneficial effects of the utility model are:
[0013] 1. On the basis of retaining the basic working principle of the traditional push rod motor, targeted improvement is carried out, a lubricating gasket is additionally arranged at one end of the screw rod close to the motor, direct friction between the screw rod and the output end of the motor is effectively reduced, more importantly, an annular structure is specially designed on one side of the lubricating gasket close to the push rod, and a solid lubricant is inlaid in the annular structure. When the push rod moves to contact the lubricating gasket under the driving of the motor, the solid lubricant can be released in time to form a thin lubricating film (friction heat makes the solid lubricant form a lubricating film), which greatly reduces the friction coefficient between the push rod and the lubricating gasket, thereby effectively avoiding the occurrence of the push rod sticking. 2. The selection of the solid lubricant also ensures its stability under various temperature and humidity conditions, further improving the adaptability and reliability of the structure. 3. The lubricating gasket can withstand large axial load, has excellent wear resistance, long service life, and due to the adoption of the solid lubrication technology, the frequency of maintenance and replacement is reduced, and the lubricating gasket can completely replace the traditional copper gasket and the plane thrust bearing under most working conditions. BRIEF DESCRIPTION OF DRAWINGS
[0014] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:
[0015] Figure 1 is a structural schematic diagram of the utility model.
[0016] Figure 2 is Figure 1 Another angle view.
[0017] Figure 3 is a structural view of the lubricating gasket. DETAILED DESCRIPTION
[0018] As Figure 1 A push rod motor anti-stuck structure, as shown in Fig. 3, mainly consists of a motor 1, a screw rod 2, a push rod 3 and a lubricating gasket 4. The screw rod 2 is fixed on the output end of the motor 1, and the push rod 3 is in a hollow tubular structure, which is screwed on the screw rod 2.
[0019] The end of the screw rod 2 close to the motor 1 is sleeved with the lubricating gasket 4, which is fixed on the motor 1, and the inner circle of the lubricating gasket 4 does not affect the rotation of the screw rod 2, i.e. there is a gap between them. A plurality of hole structures 5 are provided on the side of the lubricating gasket 4 close to the push rod 3, and solid lubricants are embedded in the hole structures 5.
[0020] When the push rod 3 is driven to move to contact with the lubricating gasket 4, the lubricating gasket 4 can form a sliding fit with the push rod 3 to avoid the push rod 4 from being stuck.
[0021] The push rod motor is commonly used on the height adjustment mechanism of automobile seats, which is the prior art. The structure is improved on the basis of retaining the basic working principle of the traditional push rod motor. By adding the lubricating gasket 4 at the end of the screw rod 2 close to the motor 1, the direct friction between the screw rod 2 and the output end of the motor 1 is effectively reduced. More importantly, the hole structures 5 are specially designed on the side of the lubricating gasket 4 close to the push rod 3, and solid lubricants are embedded in these hole structures 5. When the push rod 3 moves to contact with the lubricating gasket 4 under the drive of the motor 1, the solid lubricants can be released in time to form a thin lubricating film, which greatly reduces the friction coefficient between the push rod 3 and the lubricating gasket 4, thereby effectively avoiding the occurrence of the push rod 3 being stuck.
[0022] Preferably, a plurality of hole structures 5 are provided on the side of the lubricating gasket 4 close to the push rod 3 in the circumferential direction, and the hole structures 5 are blind hole structures. The blind hole structure provides a stable storage space for the solid lubricants. When the push rod 3 contacts with the lubricating gasket 4 under the drive of the motor 1, the solid lubricants can be released in time and uniformly to the contact surface to form a thin lubricating film. This lubricating film can significantly reduce the friction coefficient between the push rod 3 and the lubricating gasket 4, thereby avoiding the push rod 3 from being stuck.
[0023] Preferably, the lubricating gasket 4 is based on high-strength brass, which has high strength and hardness, can withstand large loads and impact forces, and has good self-lubricating properties.
[0024] Preferably, the solid lubricant is graphite or MoS2, which has excellent lubricating properties.
[0025] Preferably, the lubricating pad 4 has two spaced-apart holes 6 on the side close to the push rod 3, and a screw is arranged in each hole 6 to fix the lubricating pad 4 to the motor 1. The holes 6 are designed to enable the screws to be embedded in the lubricating pad 4, thereby avoiding the problem of space occupation caused by the screws protruding from the surface of the lubricating pad 4.
[0026] Preferably, the lubricating pad 4 has a plurality of annular hole structures 5 arranged from the inside to the outside on the side close to the push rod 3, and the sizes of the hole structures 5 are different to match lubricants of different sizes.
Claims
1. A push rod motor anti-jamming structure, comprising a motor (1), a lead screw (2), and a push rod (3), wherein the lead screw (2) is fixed to the output end of the motor (1), and the push rod (3) is a hollow tubular structure with its threads threaded onto the lead screw (2), characterized in that: The lead screw (2) is fitted with a lubricating pad (4) at the end near the motor (1). The lubricating pad (4) is fixed to the motor (1), and the inner ring of the lubricating pad (4) does not affect the rotation of the lead screw (2). The lubricating pad (4) has several hole structures (5) on the side near the push rod (3). Solid lubricant is embedded in the hole structures (5). When the push rod (3) is driven to contact the lubricating pad (4), the lubricating pad (4) can form a sliding fit with the push rod (3) to prevent the push rod (4) from getting stuck.
2. The anti-jamming structure for the push rod motor according to claim 1, characterized in that: The lubricating pad (4) has several perforated structures (5) along the circumferential direction on the side near the push rod (3), and the perforated structures (5) are blind hole structures.
3. The anti-jamming structure for the push rod motor according to claim 1, characterized in that: The lubricating pad (4) is based on high-strength brass.
4. The anti-jamming structure for the push rod motor according to claim 1, characterized in that: The solid lubricant is graphite or MoS2.
5. The anti-jamming structure for the push rod motor according to claim 1, characterized in that: The lubricating pad (4) has two countersunk holes (6) spaced apart on the side near the push rod (3). Screws are arranged in the countersunk holes (6), and the lubricating pad (4) is fixed to the motor (1) by the screws.
6. The anti-jamming structure for the push rod motor according to claim 1, characterized in that: The lubricating pad (4) has multiple perforated structures (5) arranged from the inside to the outside on the side near the push rod (3), and the size of each perforated structure (5) is different.