Electric sliding rail for automobile welfare seat

Abstract

The utility model belongs to the technical field of automobile parts, and discloses an electric sliding rail for an automobile welfare seat, which comprises a sliding rail assembly, a sliding rail seat, a sliding rail seat and a sliding rail seat, the pulley assembly is installed at the bottom of the automobile welfare seat and is assembled with the sliding rail assembly in a sliding mode; the guiding assembly is installed on the sliding rail assembly in the adjusting direction of the automobile welfare seat, and the tackle assembly is installed on the guiding assembly in a driving mode and is adjusted in a sliding mode along the guiding assembly; and the at least two groups of supporting and rolling assemblies are respectively arranged on two sides of the pulley assembly and are positioned in the sliding chutes of the sliding rail assembly. According to the automobile welfare seat, the space utilization rate can be increased, the adjusting stroke of the welfare seat is increased, the comfort of driving experience of passengers is improved, and the safety and stability of the automobile welfare seat can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, and particularly relates to an electric slide rail used for a car welfare seat. Background Art

[0002] The car welfare seat is a mechanical device designed for special people with limited mobility. Its main function is to help such people get in and out of the car without obstacles so that they can travel outdoors freely. With the continuous development of automobile parts technology and the improvement of people's living standards, people's pursuit of the safety and comfort of car welfare seats has become increasingly prominent.

[0003] As an important functional part for the adjustment of the welfare seat, the seat slide is one of the important safety parts of the car and plays a vital role in the overall performance and safety of the car. Usually, the welfare seat slide is manually or electrically adjusted to achieve the horizontal adjustment of the welfare seat, providing a comfortable riding experience for the driver and passengers. The current front and rear sliding adjustment device of the welfare seat is realized by a guide device installed on the bottom plate of the welfare seat mechanism. When loading the vehicle, the bottom plate needs to be fixedly connected to the vehicle body floor by installing a connecting bracket. When the welfare seat moves forward, the bottom plate will be exposed on the vehicle body floor, affecting the appearance while reducing the legroom and comfort of the rear passengers. Due to the size of the bottom plate and the installation space, the travel of the welfare seat forward and backward adjustment is also limited. Moreover, due to the existence of the bottom plate and the installation connecting bracket, the overall height of the car welfare seat is further increased, which seriously affects the driving experience comfort.

[0004] In addition, when the car welfare seat rotates from the inside to the outside of the car, the weight of the welfare seat and the passenger is concentrated on the cantilever, which also causes the slide rail to bear a large concentrated load. Not only does it affect the stability and sliding performance of the slide rail during use, but in extreme cases or long-term concentrated load conditions, it may accelerate the wear of the slide rail and related components and shorten their service life. When the slide rail or related components cannot withstand such concentrated loads, they may break or fail, thereby affecting the safety and stability of the welfare seat.

[0005] Therefore, when designing the slide rails of car welfare seats, these factors need to be fully considered to ensure that the slide rails can work properly under various usage conditions, so as to find a perfect balance between comfort and safety. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the utility model provides an electric slide rail for a car welfare seat, which can not only improve the space utilization rate, increase the adjustment stroke of the welfare seat, and improve the comfort of the passenger driving experience, but also improve the safety and stability of the car welfare seat.

[0007] The main technical solutions adopted in this utility model are:

[0008] An electric slide rail for a car welfare seat, comprising:

[0009] A slide rail assembly, the slide rail assembly is embedded and installed on the chassis frame of the vehicle body;

[0010] A pulley assembly, the pulley assembly is installed at the bottom of the car welfare seat and is slidably assembled with the slide rail assembly;

[0011] A guide assembly, wherein the guide assembly is mounted on the slide rail assembly along the adjustment direction of the car welfare seat, and the pulley assembly is driven and mounted on the guide assembly to slide and adjust along the guide assembly;

[0012] At least two groups of supporting rolling assemblies are respectively installed on both sides of the pulley assembly and are located in the slide groove of the slide rail assembly.

[0013] Preferably, the slide rail assembly includes a slide rail seat body and at least two guide rails, wherein the slide rail seat body is embedded and installed on the vehicle body chassis frame, and the top flange of the slide rail seat body is pressed on the vehicle body floor, and the slide rail seat body is provided with a slide groove for slidingly assembling the pulley assembly, and at least two guide rails are installed in parallel with each other in the slide groove of the slide rail seat body for carrying the pulley assembly.

[0014] Preferably, the pulley assembly includes a pulley seat body and a driving assembly, the driving assembly is installed in the accommodating groove of the pulley seat body, the pulley seat body is slidably assembled in the sliding groove of the slide rail assembly, and supporting rolling assemblies are installed on both sides of the pulley seat body, the driving assembly is drivingly connected to the guide assembly and moves and adjusts along the guide assembly, the pulley seat body is provided with an installation through hole consistent with the moving direction of the car welfare seat, and the pulley seat body is slidably installed on the guide assembly through the installation through hole.

[0015] Preferably, the driving assembly includes a worm, a bevel gear and a gear nut, and the worm, bevel gear and gear nut are all installed in the accommodating groove of the pulley seat body, the worm and the bevel gear are meshed with each other, the bevel gear and the outer teeth of the gear nut are meshed with each other, the worm is connected to the motor drive installed on the car welfare seat, the central axes of the bevel gear and the gear nut are parallel to each other and consistent with the moving direction of the car welfare seat, the central axis of the worm and the central axis of the bevel gear are perpendicular to each other, the central axis of the gear nut coincides with the central axis of the mounting through hole, and the gear nut is installed on the screw guide rod of the guide assembly.

[0016] Preferably, at least one of the front end and the rear end of the pulley seat body is provided with a collision block.

[0017] Preferably, the pulley assembly further comprises at least two groups of backlash-eliminating members, which are respectively mounted on both sides of the pulley seat body and are mounted in the slide groove of the slide rail assembly in cooperation with the pulley seat body.

[0018] Preferably, the gap-eliminating member comprises a gap-eliminating shell and a plurality of rubber blocks installed inside the gap-eliminating shell, the gap-eliminating shell is installed on the side of the pulley seat body, and the gap-eliminating shell is an elastic shell, and the top surface of the gap-eliminating shell is an elastic arc surface structure.

[0019] Preferably, the top surface of the pulley seat body gradually decreases from the front end to the rear end.

[0020] Preferably, the guide assembly includes a screw guide rod, both ends of which are fixedly mounted in the slide groove of the slide rail assembly via guide rod mounting seats, and the screw guide rod passes through the pulley assembly and is drive-mounted with the pulley assembly.

[0021] Preferably, the supporting rolling assembly comprises a rolling bearing, the rolling bearing is located in a slide groove of the slide rail assembly, and the rolling bearing rolls along a guide rail of the slide rail assembly.

[0022] Beneficial effects: The utility model provides an electric slide rail for a car welfare seat, which has the following advantages:

[0023] (1) The utility model omits the original whole installation base plate through the design of the slide rail assembly. The guide rail can be directly set in the slide groove of the slide rail seat body, and the slide rail seat body can be directly fixed on the vehicle body frame, so that the welfare seat can move long distances in the slide rail along with the guide rail trolley. This not only solves the problem that the length of the installation base plate of the existing welfare seat is greatly limited by space and the adjustment stroke of the front and rear movement is small; and because the installation base plate is eliminated, the overall height of the welfare seat is further reduced without additionally increasing the product's external dimensions, which is conducive to improving passenger comfort and rear passenger legroom, and meeting the driving experience needs of different passengers.

[0024] (2) In the utility model, through the design of the pulley assembly, not only the integrated setting of the driving assembly in the pulley seat is realized, thereby improving the space utilization rate; but also the load-bearing capacity of the electric slide rail is improved by arranging a supporting rolling assembly, a collision block and a clearance eliminating member on the pulley assembly, thereby further improving the stability and safety of the welfare seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1;

[0026] Figure 2 It is a schematic diagram of the partial structure of the present embodiment 1 (the slide rail seat is omitted);

[0027] Figure 3 This is a schematic axial cross-sectional view of the overall structure of Embodiment 1;

[0028] Figure 4 It is a structural schematic diagram of the pulley seat body of this embodiment 1;

[0029] Figure 5 Schematic diagram of the mechanism of the backlash eliminating member of the present embodiment 1;

[0030] Figure 6 This is a schematic diagram of the welfare seat in the first embodiment rotated out of the vehicle;

[0031] In the figure: slide rail assembly 1, slide rail seat body 1-1, guide rail 1-2, slide groove 1-3, dustproof plate 1-4, pulley assembly 2, pulley seat body 2-1, accommodating groove 2-11, mounting through hole 2-12, drive assembly 2-2, worm 2-21, bevel gear 2-22, gear nut 2-23, collision block 2-3, gap eliminating member 2-4, gap eliminating shell 2-41, rubber block 2-42, elastic arc surface 2-43, guide assembly 3, screw guide rod 3-1, guide rod mounting seat 3-2, support rolling assembly 4, rolling bearing 4-1. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application. Example 1

[0033] An electric slide rail for a car welfare seat, such as Figure 1-5 As shown, including:

[0034] A slide rail assembly 1, wherein the slide rail assembly 1 is mounted on the chassis frame of the vehicle body;

[0035] A pulley assembly 2, wherein the pulley assembly 2 is installed at the bottom of the car welfare seat and is slidably assembled with the slide rail assembly 1;

[0036] A guide assembly 3, wherein the guide assembly 3 is mounted on the slide rail assembly 1 along the adjustment direction of the car welfare seat, and the pulley assembly 2 is driven and mounted on the guide assembly 3 to slide and adjust along the guide assembly 3;

[0037] At least two groups of supporting rolling assemblies 4 are respectively installed on both sides of the pulley assembly 2 and located in the slide grooves 1 - 3 of the slide rail assembly 1 .

[0038] Below, reference Figure 1-Figure 2 , while explaining the structure of the slide rail assembly 1.

[0039] The slide rail assembly 1 includes a slide rail seat body 1-1 and at least two guide rails 1-2, wherein the slide rail seat body 1-1 is embedded and installed on the vehicle chassis frame, and the top flange of the slide rail seat body 1-1 is pressed on the vehicle body floor, and the slide rail seat body 1-1 is provided with a slide groove 1-3 for slidingly assembling the pulley assembly 2, and at least two guide rails 1-2 are installed parallel to each other in the slide groove 1-3 of the slide rail seat body 1-1 for carrying the pulley assembly 2.

[0040] In this embodiment 1, in order to reduce the installation height of the entire mechanism and improve space utilization and driving comfort, the slide rail seat body 1-1 is installed on the vehicle body chassis frame in a sunken manner, that is, it is installed below the vehicle body floor surface. At the same time, the top surface of the slide rail seat body 1-1 is flanged and pressed onto the vehicle body floor, further improving stability.

[0041] Generally, in order to reduce the weight of the whole vehicle, the slide rail seat body 1-1 is made of aluminum profiles, but its load bearing capacity is limited. If it is directly used as the guide rail of the pulley assembly 2, it is easy to deform under the action of long-term load, resulting in instability of the welfare seat guide rail. Therefore, a guide rail 1-2 is set at the bottom of the slide groove 1-3 of the slide rail seat body 1-1. The guide rail generally adopts a rigid track, which can effectively reduce the deformation of the slide rail assembly, and improve the stability and safety of the guide rail assembly while ensuring that the weight change of the whole vehicle is small.

[0042] like Figure 1 As shown, the top surface of the slide rail seat 1-1 can also be designed, that is, a dustproof plate 1-4 is integrally formed on the top surface of the slide rail seat 1-1 to cover part of the slide groove, and a through groove is left on the dustproof plate 1-4 to allow the pulley assembly 2 to slide through. The dustproof plate can prevent dust or debris from entering the slide rail assembly 1 and affecting the sliding performance.

[0043] Below, reference Figure 1 - Figure 5 , while explaining the structure of the pulley assembly 2.

[0044] The pulley assembly 2 includes a pulley seat body 2-1 and a driving assembly 2-2, wherein the driving assembly 2-2 is installed in the receiving groove 2-11 of the pulley seat body 2-1, the pulley seat body 2-1 is slidably assembled in the slide groove 1-3 of the slide rail assembly 1, and supporting rolling assemblies 4 are installed on both sides of the pulley seat body 2-1, the driving assembly 2-2 is drivingly connected to the guide assembly 3, and moves and adjusts along the guide assembly 3, and the pulley seat body 2-1 is provided with an installation through hole 2-12 consistent with the moving direction of the car welfare seat, and the pulley seat body 2-1 is slidably installed on the guide assembly 3 through the installation through hole 2-12.

[0045] like Figure 3 As shown, the drive assembly 2-2 includes a worm 2-21, a bevel gear 2-22 and a gear nut 2-23, and the worm 2-21, the bevel gear 2-22 and the gear nut 2-23 are all installed in the accommodating groove 2-11 of the pulley seat body 2-1, the worm 2-21 and the bevel gear 2-22 are meshed with each other, the bevel gear 2-222 and the outer teeth of the gear nut 2-23 are meshed with each other, the worm 2-21 is connected to the motor drive installed on the car welfare seat, the central axes of the bevel gear 2-22 and the gear nut 2-23 are parallel to each other and consistent with the moving direction of the car welfare seat, the central axis of the worm 2-21 and the central axis of the bevel gear 2-22 are perpendicular to each other, the central axis of the gear nut 2-23 coincides with the central axis of the mounting through hole 2-12, and the gear nut 2-23 is installed on the screw guide rod 3-1 of the guide assembly 3.

[0046] In this embodiment 1, the motor on the car welfare seat moves with the pulley seat body 2-1, and the driving connection method between the motor and the worm belongs to the conventional technical means mastered by those skilled in the art, so it is not described in detail. The specific transmission method of this embodiment 1 is as follows: the motor drives the worm 2-21 to rotate, and the worm 2-21 drives the bevel gear 2-22 to rotate through meshing, and then the bevel gear 2-22 drives the gear nut 2-23 to move on the lead screw guide rod 3-1 of the guide assembly 3 through meshing transmission. In the utility model, the drive assembly can be but is not limited to the above structure, and any existing drive assembly that can drive the pulley seat body 2-1 to move on the lead screw guide rod 3-1 of the guide assembly 3 can be applicable.

[0047] like Figure 4As shown, at least one of the front and rear ends of the pulley seat body 2-1 is provided with a collision block 2-3. The setting of the collision block 2-3 can, on the one hand, increase the stability of the welfare seat structure, provide additional protection in the event of a collision accident, reduce the deformation and damage of the welfare seat slide rail, and thus protect the safety of the occupants; on the other hand, it can cooperate with the slide groove of the slide rail to form a limit to prevent the sliding seat body 2-1 from accidentally falling off during the sliding process or collision process, thereby ensuring the stability and safety of the welfare seat. In the utility model, the collision block 2-3 can be made integrally with the pulley seat body 2-1, or it can be fixedly installed on both sides of the pulley seat body 2-1 by existing connection methods such as welding and threaded connection. And the number of collision blocks 2-3 can be selectively designed by those skilled in the art according to actual needs.

[0048] like Figure 3 As shown, the top surface of the trolley seat body 2-1 (i.e., the installation surface of the welfare seat) gradually decreases from the front end to the rear end, i.e., the installation surface of the welfare seat is an inclined plane with a high front and a low back. This is because the floor of a general vehicle body is low in the front and high in the back. By designing the trolley seat body with a high front and a low back, the car welfare seat installed on the trolley seat body 2-1 can be kept relatively parallel to the ground. In this way, when the car welfare seat is rotated out of the car, there will be no feeling of the welfare seat tilting left and right, which is conducive to improving the comfort of the occupants and reducing the running resistance of the mechanism.

[0049] In the present invention, the pulley seat body can be an integrally formed design, or can be designed as two separate seat bodies, one of which is provided with a receiving groove for receiving the driving assembly, and the two separate seat bodies can be connected by conventional connection methods such as welding. The integral design and the separate design of the pulley seat body are conventional technical means, so they are not described in detail.

[0050] like Figure 2 As shown, in order to ensure the smoothness of the sliding of the trolley seat 2-1 in the slide rail assembly 1, the trolley assembly 2 is also provided with at least two groups of anti-backlash members 2-4, which are respectively installed on both sides of the trolley seat 2-1 and are installed in the slide groove 1-3 of the slide rail assembly 1 in cooperation with the trolley seat 2-1. Figure 6 As shown, when the car welfare seat is rotated out of the car, the cantilever is extended and subjected to pressure, causing the slide rail seat body 1-1 in the slide rail assembly 1 to be subjected to an upward force, and the gap-eliminating member 2-4 forms a support block after the elastic member is fully compressed, which can provide support force for the upward movement.

[0051] like Figure 5As shown, the gap eliminating member 2-4 in this embodiment 1 includes a gap eliminating housing 2-41 and a plurality of rubber blocks 2-42 installed inside the gap eliminating housing 2-41, wherein the gap eliminating housing 2-41 is installed on the side of the pulley seat body 2-1, and the gap eliminating housing 2-1 is an elastic housing, and the top surface of the gap eliminating housing 2-41 is an elastic arc surface 2-43 structure. The number of rubber blocks 2-42 can be selectively designed by those skilled in the art according to actual needs, for example, three rubber blocks can be selected, all of which are filled and installed in the internal cavity of the gap eliminating housing 2-41, one of which is located at the bottom, and the other two are located above the bottom rubber block.

[0052] In this Example 1, the elastic arc surface 2-43 is higher than the top surface of the collision block 2-3. The gap eliminating member 2-4 is mainly used to eliminate the gap between the trolley seat body 2-1 and the slide rail seat body 1-1. During installation, the gap eliminating member 2-4 has a pre-compression process, and the elastic arc surface 2-43 of the gap eliminating shell 2-41 is supported against the inside of the slide rail seat body 1-1 through the elastic rubber block 2-42 in the middle of the gap eliminating shell 2-41, and within the appropriate elastic deformation range, the trolley seat body 2-1 will not generate excessive sliding resistance during the movement of the slide groove 1-3 due to the contact between the gap eliminating shell 2-41 and the slide rail seat body 1-1. In this way, the trolley seat body 2-1 can slide without gaps in the slide rail seat body 1-1. When the welfare seat is extended out of the vehicle, such as Figure 6 As shown, the trolley seat 2-1 in the inner track is compressed (supported by the supporting rolling assembly 4), and the trolley seat 2-1 on the other side is tilted upward. As the force gradually increases, the elastic rubber block 2-42 in the gap-eliminating member 2-4 will be continuously compressed until it reaches the limit. At this time, the elastic gap-eliminating member 2-4 becomes a support block, which presses against the upper plane inside the profile of the rail seat 1-1 to play a supporting role. Since the collision block 2-3 is mainly used in extreme collision situations, when subjected to an instantaneous impact, the gap-eliminating member 2-4 may break or plastically deform. At this time, the anti-collision block 2-3 works and hooks the rail seat 1-1, thereby playing a safety protection role. Therefore, the elastic arc surface 2-43 of the gap-eliminating shell 2-41 is higher than the upper plane of the anti-collision block 2-3 after compression.

[0053] The gap-eliminating shell 2-41 in the present invention can be, but is not limited to, a plastic shell with a certain elasticity, and any existing shell with elasticity can be applicable.

[0054] Below, reference Figure 3 , while explaining the structure of the guide component 3.

[0055] The guide assembly 3 includes a screw guide rod 3-1, both ends of which are fixedly mounted in the slide groove 1-3 of the slide rail assembly 1 through a guide rod mounting seat 3-2, and the screw guide rod 3-1 passes through the pulley assembly 2 and is driven and mounted with the pulley assembly 2.

[0056] Below, reference Figure 1-Figure 3 , while explaining the structure of supporting the rolling component 4.

[0057] The supporting rolling assembly 4 includes a rolling bearing 4 - 1 , which is located in the slide groove 1 - 3 of the slide rail assembly 1 and rolls along the guide rail 1 - 2 of the slide rail assembly 1 .

[0058] In the present invention, the rolling bearing 4-1 can not only be used to realize the rolling of the pulley seat 2-1 on the guide rail 1-2, reduce the friction between the pulley seat 2-1 and the guide rail 1-2, and extend the service life of the guide rail, but also can play a supporting role of the load-bearing cantilever when the car welfare seat is rotated out of the car. Based on this, the rolling bearing 4-1 in the present invention is preferably a roller needle bearing that can withstand large axial and radial loads. The rolling bearing 4-1 in the present invention can be, but is not limited to, a roller needle bearing, and any existing rolling bearing that can achieve rolling can be applicable.

[0059] The working principle of the utility model is as follows:

[0060] The car welfare seat is installed on the top of the pulley seat body 2-1, and moves with the pulley seat body 2-1. When it is necessary to adjust the front and rear position of the car welfare seat, it is only necessary to control the motor installed on the car welfare seat to work, and the motor drives the worm 2-21 to rotate. The worm 2-21 drives the gear nut 2-23 to rotate around its central axis through the bevel gear 2-22. The gear nut 2-23 and the screw guide rod 3-1 realize motion transmission through the mutual engagement of the threads, thereby driving the pulley seat body 2-1 and the car welfare seat installed on the pulley seat body 2-1 to move and adjust along the screw guide rod 3-1.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An electric slide rail for a car welfare seat, characterized in that: include: A slide rail assembly, the slide rail assembly is embedded and installed on the chassis frame of the vehicle body; A pulley assembly, the pulley assembly is installed at the bottom of the car welfare seat and is slidably assembled with the slide rail assembly; A guide assembly, wherein the guide assembly is mounted on the slide rail assembly along the adjustment direction of the car welfare seat, and the pulley assembly is driven and mounted on the guide assembly to slide and adjust along the guide assembly; At least two groups of supporting rolling assemblies are respectively installed on both sides of the pulley assembly and are located in the slide groove of the slide rail assembly.

2. The electric slide rail for a car welfare seat according to claim 1, characterized in that: The slide rail assembly includes a slide rail seat body and at least two guide rails, wherein the slide rail seat body is embedded and installed on the vehicle chassis frame, and the top flange of the slide rail seat body is pressed on the vehicle body floor, and the slide rail seat body is provided with a slide groove for slidingly assembling the pulley assembly, and at least two guide rails are installed in parallel with each other in the slide groove of the slide rail seat body for carrying the pulley assembly.

3. The electric slide rail for a car welfare seat according to claim 1 or 2, characterized in that: The pulley assembly includes a pulley seat body and a driving assembly, the driving assembly is installed in the receiving groove of the pulley seat body, the pulley seat body is slidably assembled in the sliding groove of the slide rail assembly, and supporting rolling assemblies are installed on both sides of the pulley seat body, the driving assembly is connected to the guide assembly for movement and adjustment along the guide assembly, the pulley seat body is provided with an installation through hole consistent with the moving direction of the car welfare seat, and the pulley seat body is slidably installed on the guide assembly through the installation through hole.

4. The electric slide rail for a car welfare seat according to claim 3, characterized in that: The driving assembly includes a worm, a bevel gear and a gear nut, and the worm, bevel gear and gear nut are all installed in the accommodating groove of the pulley seat body, the worm and the bevel gear are meshed and assembled with each other, the bevel gear and the outer teeth of the gear nut are meshed with each other, the worm is connected to the motor drive installed on the car welfare seat, the central axes of the bevel gear and the gear nut are parallel to each other and consistent with the moving direction of the car welfare seat, the central axis of the worm and the central axis of the bevel gear are perpendicular to each other, the central axis of the gear nut coincides with the central axis of the mounting through hole, and the gear nut is installed on the screw guide rod of the guide assembly.

5. The electric slide rail for a car welfare seat according to claim 3, characterized in that: At least one of the front end and the rear end of the pulley seat body is provided with a collision block.

6. The electric slide rail for a car welfare seat according to claim 3, characterized in that: The pulley assembly further comprises at least two groups of clearance eliminating members, which are respectively mounted on both sides of the pulley seat body and are mounted in the slide groove of the slide rail assembly in cooperation with the pulley seat body.

7. The electric slide rail for a car welfare seat according to claim 6, characterized in that: The gap eliminating member comprises a gap eliminating shell and a plurality of rubber blocks installed inside the gap eliminating shell. The gap eliminating shell is installed on the side of the pulley seat body, and the gap eliminating shell is an elastic shell. The top surface of the gap eliminating shell is an elastic arc surface structure.

8. The electric slide rail for a car welfare seat according to claim 3, characterized in that: The top surface of the pulley seat body gradually decreases from the front end to the rear end.

9. The electric slide rail for a car welfare seat according to claim 1, characterized in that: The guide assembly includes a lead screw guide rod, both ends of which are fixedly mounted in the slide groove of the slide rail assembly via guide rod mounting seats, and the lead screw guide rod passes through the pulley assembly and is driven and mounted with the pulley assembly.

10. The electric slide rail for a car welfare seat according to claim 1, characterized in that: The supporting rolling assembly comprises a rolling bearing, the rolling bearing is located in the slide groove of the slide rail assembly, and the rolling bearing rolls along the guide rail of the slide rail assembly.

Images