Electric sliding rail and seat assembly

Abstract

An electric slide rail and a seat assembly, the electric slide rail comprises an upper rail (1), a gear box (3), a motor support (4) and a connecting part (5), the gear box (3) is located on the inner side of the upper rail (1), a first mounting hole (322a) is formed in a mounting portion of the gear box (3), a second mounting hole (11) is formed in the upper rail (1), a third mounting hole (41) is formed in the motor support (4), and the connecting part (5) comprises a threaded part (51) and a nut part (52). The threaded part (51) comprises a head part (511) and a rod part (512), the rod part (512) comprises a first section (512a) and a second section (512b), the first section (512a) is close to the head part (511) relative to the second section (512b), the head part (511) is located on the inner side of the upper rail (1), the rod part (512) penetrates through the first mounting hole (322a), the second mounting hole (11) and the third mounting hole (41), the threaded part (51) is fixedly mounted on at least one of the mounting part and the upper rail, and the nut part (52) is in threaded connection with the second section (512b).

Description

Technical Field

[0001] The utility model relates to the technical field of electric slide rails, and particularly relates to an electric slide rail and a seat assembly. Background Art

[0002] An electric slide rail includes an upper rail, a lower rail and a motor. The lower rail is fixedly arranged, and the upper rail is slidably assembled on the lower rail. The motor is in transmission connection with the upper rail and is used to drive the upper rail to displace relative to the lower rail, so as to realize the adjustment of the seat position.

[0003] In the related art, the electric slide rail further includes a gearbox and a motor bracket. The gearbox includes a body part, a gearbox fixing bracket and a gearbox cover plate. The body part and the gearbox fixing bracket are both arranged inside the upper rail, and the gearbox cover plate is arranged outside the upper rail. The gearbox fixing bracket can support the body part. Then, an external screw can connect the gearbox cover plate, the upper rail and the gearbox fixing bracket from top to bottom. The motor bracket is used to support the motor, and the motor bracket is connected to the gearbox cover plate. In this technical solution, the number of components of the electric slide rail is relatively large, the installation process is relatively complex, the cost is high, and the weight is large.

[0004] Therefore, how to provide a solution to overcome or alleviate the above defects is still a technical problem that those skilled in the art need to solve urgently. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an electric slide rail and a seat assembly, wherein the number of components of the electric slide rail is relatively small, the installation is convenient, the weight is light, and the cost is low.

[0006] To solve the above technical problems, the utility model provides an electric slide rail, which includes an upper rail, a gearbox, a motor bracket and a connecting component. The gearbox is located inside the upper rail. The gearbox is provided with an installation part, and the installation part is provided with a first installation hole. The upper rail is provided with a second installation hole. The motor bracket is provided with a third installation hole. The connecting component includes a threaded part and a nut part. The threaded part includes a head and a rod part. The rod part includes a first section and a second section arranged along its axial direction. The first section is closer to the head than the second section. The head is located inside the upper rail. The rod part penetrates through the first installation hole, the second installation hole and the third installation hole. The threaded part is fixedly installed on at least one of the installation part and the upper rail. The nut part is located outside the upper rail, and the nut part is in threaded connection with the second section.

[0007] In the above solution, the motor bracket is directly connected to the upper rail and the gearbox by means of connecting components. The motor bracket itself can shield the gearbox, effectively reducing the possibility of foreign objects falling into the gearbox. The gearbox cover plate in the related art can be omitted, so that the number of components of the electric slide rail can be relatively small, the installation process can be relatively simple, and the cost can also be relatively low. At the same time, the weight of the electric slide rail can be reduced, which is conducive to realizing the lightweight design of the vehicle.

[0008] Moreover, the threaded part in the embodiment of the present utility model is installed from bottom to top. The rod part can be sequentially inserted into the first mounting hole, the second mounting hole and the third mounting hole from bottom to top. The nut part is located outside the upper rail as a whole. In this way, when the nut part is threadedly connected to the second section of the rod part, even if the paint film falls off, the paint film mostly falls outside the upper rail and basically does not affect the operation of transmission components such as the gearbox between the upper rail and the lower rail, so that the transmission noise caused by the paint film shedding in the related art can be better avoided. In fact, when the paint film falls outside the upper rail, the cleaning difficulty is very low. During the installation process of the electric slide rail, the staff can easily handle the fallen paint film to avoid possible subsequent hazards.

[0009] In addition, in the embodiment of the present utility model, the threaded part is fixedly connected to at least one of the mounting part and the upper rail. In this way, during the installation process of the threaded part from bottom to top, especially when the nut part is not fixedly connected to the threaded part yet, the threaded part can relatively reliably ensure its installation position and will not fall off, which makes the installation of the threaded part from bottom to top in the embodiment of the present utility model simple and easy to operate.

[0010] Optionally, the first section is connected to the second mounting hole by interference fit.

[0011] Optionally, a convex part is arranged on the outer wall surface of the first section, and the first section is connected to the second mounting hole by interference fit through the convex part.

[0012] Optionally, the threaded part is fixedly connected to the mounting part by welding.

[0013] Optionally, the motor bracket is further provided with a notch part, and the notch part communicates with the third mounting hole.

[0014] Optionally, the number of the connecting components is two, and the two connecting components are arranged at intervals along the extending direction of the upper rail. The arrangement direction of the notch part and the third mounting hole forms an angle with the extending direction of the upper rail.

[0015] Optionally, the gearbox includes a body part and a frame part. The frame part is used to support the body part, and the mounting part is arranged on the frame part.

[0016] Optionally, the frame part includes a U-shaped plate and two wing plates. The U-shaped plate includes a bottom plate part and two side plate parts. The two wing plates are respectively connected to the two side plate parts, and the wing plates form the installation part.

[0017] Optionally, the motor bracket is made of metal or plastic.

[0018] The present utility model further provides a seat assembly, including a seat body and an electric slide rail. The electric slide rail is the above-mentioned electric slide rail, and the seat body is connected to the upper rail.

[0019] Since the aforementioned electric slide rail already has the above technical effects, then the seat assembly with this electric slide rail should also have similar technical effects, which will not be elaborated here. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an implementation manner of the electric slide rail provided by the present utility model;

[0021] Figure 2 It is Figure 1 a partial enlarged view of the connection part between the motor bracket and the upper rail in

[0022] Figure 3 It is Figure 2 a schematic structural diagram after removing the nut part;

[0023] Figure 4 It is a partial view of the motor bracket;

[0024] Figure 5 It is a cross-sectional view of the connection part between the upper rail, the gearbox, the motor bracket and the connecting part;

[0025] Figure 6 It is Figure 5 a partial enlarged view of the connection part between the upper rail, the wing plate, the motor bracket and the connecting part in

[0026] Figure 7 It is a schematic structural diagram of the connecting part.

[0027] Description of the reference numerals is as follows:

[0028] 1 - upper rail, 11 - second mounting hole;

[0029] 2 - lower rail;

[0030] 3 - gearbox, 31 - body part, 32 - frame part, 321 - U-shaped plate, 321a - bottom plate part, 321b - side plate part, 322 - wing plate, 322a - first mounting hole;

[0031] 4 - Motor bracket, 41 - Third mounting hole, 42 - Notch portion, 43 - Support portion;

[0032] 5 - Connecting component, 51 - Threaded part, 511 - Head, 512 - Shank, 512a - First section, 512b - Second section, 52 - Nut part;

[0033] 6 - Motor;

[0034] 7 - Flexible shaft. Detailed implementation manner

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the embodiments of the present utility model, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include one or more of such features.

[0037] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, "connected" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0038] The orientation terms mentioned in the embodiments of the present utility model, such as "inner", "outer", etc., are only references to the directions of the accompanying drawings. Therefore, the orientation terms used are for better and clearer illustration and understanding of the embodiments of the present utility model, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present utility model. In addition, unless otherwise stated in this application, the term "plurality" as used in this application means two or more.

[0039] In the description of the embodiments of the present utility model, the terms "comprise", "include" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device including such element.

[0040] Please refer to Figures 1-7 ,Figure 1 Schematic structural diagram of an implementation of the electric slide rail provided by the present utility model; Figure 2 For Figure 1 Partial enlarged view of the connection between the motor bracket and the upper rail in Figure 3 For Figure 2 Schematic structural diagram after removing the nut part; Figure 4 Partial view of the motor bracket; Figure 5 Cross-sectional view of the connection between the upper rail, the gearbox, the motor bracket and the connecting component; Figure 6 For Figure 5 Partial enlarged view of the connection between the upper rail, the wing plate, the motor bracket and the connecting component in Figure 7 Schematic structural diagram of the connecting component.

[0041] As Figure 1 As shown, an embodiment of the present utility model provides an electric slide rail, which is applied to the seat assembly of a vehicle and includes an upper rail 1, a lower rail 2, a gearbox 3, a motor bracket 4, a connecting component 5, a motor 6 and a flexible shaft 7.

[0042] The upper rail 1 and the lower rail 2 can be combined to form a track assembly. Among them, the lower rail 2 is a fixed rail, which can be installed on the vehicle floor, and the upper rail 1 can be a sliding rail. The upper rail 1 can be inserted into the lower rail 2 and can slide relative to the lower rail 2. The upper rail 1 can also be connected to the seat body in the seat assembly. In this way, when the upper rail 1 slides relative to the lower rail 2, it can drive the seat body to move inside the vehicle to realize the position adjustment of the seat body. In practical applications, the number of track assemblies can be one or more, which can be determined specifically according to the usage requirements, etc.; for example, in Figure 1 the implementation mode, the number of track assemblies can be two, and the two track assemblies can be arranged at intervals.

[0043] The motor bracket 4 is used to support the motor 6, and the output shaft of the motor 6 can be connected to the flexible shaft 7. The motor bracket 4 can also be provided with a support portion 43, and the support portion 43 can support the flexible shaft 7. The flexible shaft 7 can be connected to the gearbox 3, and the output end of the gearbox 3 can be connected to the upper rail 1. In this way, under the action of the motor 6, the upper rail 1 can be driven to move automatically. Compared with the traditional manually adjustable slide rail, the electric slide rail has a higher degree of automation and the adjustment process is relatively time-saving and labor-saving.

[0044] Combined with Figures 2-7, in the embodiment of the present utility model, the gearbox 3 is entirely located inside the upper rail 1, and the gearbox 3 is configured with a mounting portion, and the mounting portion is configured with a first mounting hole 322a; the top plate portion of the upper rail 1 is configured with a second mounting hole 11; the motor bracket 4 is configured with a third mounting hole 41; the connecting member 5 includes a threaded member 51 and a nut member 52, the threaded member 51 includes a head 511 and a rod portion 512, the rod portion 512 includes a first section 512a and a second section 512b arranged along its axial direction, the first section 512a is closer to the head 511 than the second section 512b, the head 511 is located inside the upper rail 1, the rod portion 512 passes through the first mounting hole 322a, the second mounting hole 11 and the third mounting hole 41, the first section 512a and the second mounting hole 11 are connected by interference fit, the nut member 52 can specifically be a nut or a screw cap, etc., the nut member 52 is located outside the upper rail 1, and the nut member 52 is threadedly connected to the second section 512b.

[0045] Adopting this solution can eliminate the gearbox cover plate in the related art. The motor bracket 4 can be directly connected to the upper rail 1 and the gearbox 3 by means of the connecting member 5. The motor bracket 4 itself can shield the gearbox 3, which can effectively reduce the possibility of foreign objects falling into the gearbox 3, making the number of components of the electric slide rail relatively small, the installation process can be relatively simple, and the cost can also be relatively low. At the same time, it can also reduce the weight of the electric slide rail, which is beneficial to the lightweight design of the vehicle.

[0046] In addition, in the related art, screws or bolts with threads are all installed from top to bottom during installation, that is, the threaded rod portion is inserted into the upper rail. In this way, the screwing and assembling of the screw or bolt will be relatively easy. However, the threaded rod portion is usually painted during specific processing to coat a layer of paint film on the rod portion. When the threaded rod portion is inserted into the upper rail for threaded assembly, due to factors such as thread friction, there is a high risk of the paint film falling off. Once the paint film falls into the upper rail, the normal operation of the transmission components (such as the gearbox) between the upper rail and the lower rail will be affected, which is likely to cause obvious transmission noise, and the paint film falling into the upper rail is extremely difficult to clean, resulting in almost impossible to handle this noise.

[0047] However, the embodiments of the present utility model can preferably overcome the above technical problems. Specifically speaking, since the threaded member 51 in the embodiments of the present utility model is installed from bottom to top, the rod portion 512 can be sequentially inserted into the first mounting hole 322a, the second mounting hole 11, and the third mounting hole 41 from bottom to top, and the nut member 52 is entirely located outside the upper rail 1. In this way, when the nut member 52 is threadedly connected to the second section 512b of the rod portion 512, even if there is paint film falling off, the paint film mostly falls outside the upper rail 1 and basically does not affect the operation of transmission components such as the gearbox 3 between the upper rail 1 and the lower rail 2, so that the transmission noise caused by paint film shedding in the related art can be preferably avoided. Moreover, when the paint film falls outside the upper rail 1, the cleaning difficulty is very low. During the installation process of the electric slide rail, the staff can easily handle the fallen paint film to avoid potential hazards in the future.

[0048] Furthermore, the embodiments of the present utility model also adjust the assembly relationship of the connecting component 5. Specifically speaking, the rod portion 512 in the embodiments of the present utility model is organically divided into two sections, namely the first section 512a and the second section 512b, and an interference fit connection is provided between the first section 512a and the second mounting hole 11. In this way, during the installation process of the threaded member 51 from bottom to top, especially when the nut member 52 is not yet fixedly connected to the threaded member 51, the threaded member 51 can relatively reliably complete the fixation with the upper rail 1 without falling off, which makes the installation of the threaded member 51 from bottom to top in the embodiments of the present utility model simple and easy to operate.

[0049] When installing the electric slide rail, the gearbox 3 can be first integrally arranged inside the upper rail 1, and then the rod portion 512 of the threaded member 51 sequentially passes through the first mounting hole 322a of the gearbox 3 and the second mounting hole 11 of the upper rail 1, so that the head 511 can be fitted to the mounting portion. During the process of the rod portion 512 passing through the second mounting hole 11, an interference fit connection can be presented between the rod portion 512 and the second mounting hole 11; in this way, after the gearbox 3 is installed in place, the relative position between the threaded member 51 and the upper rail 1 is not likely to change, and the gearbox 3 can be hung inside the upper rail 1 by the head 511, and at least a part of the second section 512b of the rod portion 512 can extend out of the upper rail 1 from bottom to top. Then, the upper rail 1 can be installed. At this time, the head 511 of the threaded member 51 will be hidden between the upper rail 1 and the lower rail 2; and since the first section 512a and the second mounting hole 11 are in interference fit, the threaded member 51 is not likely to be rotated relative to the upper rail 1. Then, the third mounting hole 41 of the motor bracket 4 can be inserted through the rod portion 512, and the motor bracket 4 can be installed and fixed on the upper rail 1 by the threaded connection between the nut member 52 and the second section 512b of the rod portion 512. The number of components involved in the entire installation process is relatively small, and the installation is simple.

[0050] As for the interference fit, clearance fit, or transition fit between the rod portion 512 and the first mounting hole 322a, no specific limitation is imposed herein. Similarly, the same applies to the third mounting hole 41 of the rod portion 512 and the motor bracket 4.

[0051] In some alternative implementation manners, a raised portion may be disposed on the outer wall surface of the first section 512a. Specifically, the first section 512a may be connected to the second mounting hole 11 through interference fitting by means of the raised portion. In this way, the contact area between the first section 512 and the second mounting hole 11 can be effectively controlled, and the installation difficulty between the threaded member 51 and the upper rail 1 can be reduced.

[0052] Combined with Figure 7 , the raised portion may include a plurality of axially extending ribs, and the ribs may be arranged at intervals in the circumferential direction. In addition, the raised portion may also adopt a bump structure or the like.

[0053] In fact, the raised portion described above may not be provided on the outer wall surface of the first section 512a. At this time, the outer diameter of the first section 512a may be enlarged as a whole to ensure the interference fit connection between the first section 512a and the second mounting hole 11, which is also feasible.

[0054] It should be understood that the interference fit connection method is only an alternative connection method between the first section 512a and the second mounting hole 11. In practical applications, other connection methods may also be adopted to install and fix the threaded member 51, as long as the reliability requirements of the connection can be ensured. For example, the threaded member 51 and the mounting portion may be welded, and then the mounting portion and the upper rail 1 may be welded together, which can also ensure the reliable fixation of the threaded member 51 relative to the upper rail 1. Of course, the welding connection method is relatively flexible. It may also be that after the first section 512a is inserted into the second mounting hole 11, the first section 512a and the upper rail 1 are welded and fixed. In this way, through the welding connection between the first section 512a and the upper rail 1, the mounting portion does not need to be connected to the upper rail 1 anymore, and the number of welding points can be relatively small. That is to say, when implementing the welding process, those skilled in the art can flexibly adjust the welding object and the welding steps, as long as the second section 512b of the threaded member 51 can finally extend stably to be connected to the nut member 52.

[0055] In some alternative implementation manners, as Figures 2-4 shown, the motor bracket 4 may further be provided with a notch portion 42, and the notch portion 42 may communicate with the third mounting hole 41.

[0056] With the provision of the notch portion 42, there can be more options for the installation directions of the motor bracket 4 and the rod portion 512, making the installation of the motor bracket 4 more flexible. For example, the motor bracket 4 can be inserted into the rod portion 512 from top to bottom. Another example is that the motor bracket 4 can also be horizontally assembled, and the rod portion 512 can be inserted into the third mounting hole 41 through the notch portion 42.

[0057] The number of the connecting members 5 between the motor bracket 4 and the upper rail 1 can be two, and the two connecting members 5 can be arranged at intervals along the extending direction of the upper rail 1. The arranging direction of the notch portion 42 and the third mounting hole 41 can be set at an angle with the extending direction of the upper rail 1. In this way, it is also convenient to realize the insertion connection between the flexible shaft 7 supported by the motor bracket 4 and the gearbox 3.

[0058] Here, the embodiment of the present utility model does not limit the specific angular value of the above-mentioned angle. In practical applications, those skilled in the art can configure it according to specific needs as long as it can meet the usage requirements. For example, the angular value of this angle can be 90 degrees.

[0059] In some alternative implementation manners, still as Figure 5 shown, the gearbox 3 can include a body portion 31 and a frame portion 32. The frame portion 32 can be used to support the body portion 31, and the aforementioned mounting portion can be located on the frame portion 32. In this way, the gearbox 3 can be specifically connected and assembled with the upper rail 1 through the frame portion 32.

[0060] The frame portion 32 can include a U-shaped plate 321 and two wing plates 322. The U-shaped plate 321 can include a bottom plate portion 321a and two side plate portions 321b. An installation chamber can be formed by enclosing between the two side plate portions 321b and the bottom plate portion 321a, and the gearbox 3 can be located in this installation chamber. The two wing plates 322 can be respectively connected to the two side plate portions 321b and are located on the outer sides of the two side plate portions 321b. At the same time, the two wing plates 322 are also arranged relatively far away from the bottom plate portion 321a. The two wing plates 322 are the aforementioned mounting portions, that is, the first mounting holes 322a can be provided on the wing plates 322.

[0061] It should be understood that in addition to the implementation manner of providing the frame portion 32, ear plates can also be provided on the body portion 31, and these ear plates can be used as the mounting portions. In this way, the frame portion 32 can be further omitted, and the structural form can be simpler.

[0062] In the related art, due to the existence of the gearbox cover plate, the motor bracket is also connected to the gearbox cover plate, and the material of the gearbox cover plate is usually the same as that of the motor bracket. In this way, when the motor bracket is made of metal, the gearbox cover plate also needs to be designed as a metal material, and when the motor bracket is made of plastic, the gearbox cover plate also needs to be designed as a plastic material, which will also lead to a large number of types of gearbox cover plates, making it inconvenient to manage and increasing the cost.

[0063] However, the above problems do not exist in the embodiments of the present invention. In the embodiments of the present invention, the motor bracket 4 is directly connected to the upper rail 1 and is located above the upper rail 1, and the connection reliability is high. The material of the motor bracket 4 will not affect other structural components. Therefore, in the embodiments of the present invention, the motor bracket 4 can be made of metal or plastic, and the material selection of the motor bracket 4 is more free and more flexible.

[0064] The present invention also provides a seat assembly, including a seat body and an electric slide rail. Among them, the electric slide rail can be the electric slide rail involved in the foregoing implementation manners, and the seat body can be connected to the upper rail 1 so as to be displaced under the drive of the upper rail 1.

[0065] Since the foregoing electric slide rail already has the above technical effects, then, the seat assembly having this electric slide rail should also have similar technical effects, which will not be elaborated here.

[0066] The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An electric slide rail, characterized in that: The invention comprises an upper rail (1), a gear box (3), a motor bracket (4) and a connecting component (5), wherein the gear box (3) is located on the inner side of the upper rail (1), the gear box (3) is provided with a mounting portion, the mounting portion is provided with a first mounting hole (322a), the upper rail (1) is provided with a second mounting hole (11), the motor bracket (4) is provided with a third mounting hole (41), the connecting component (5) comprises a threaded member (51) and a nut member (52), the threaded member (51) comprises a head portion (511) and a rod portion (512), the rod portion (512) comprises a first section (511) arranged along its axial direction The invention relates to a first section (512a) and a second section (512b), wherein the first section (512a) is closer to the head section (511) than the second section (512b), the head section (511) is located on the inner side of the upper rail (1), the rod section (512) is inserted into the first mounting hole (322a), the second mounting hole (11) and the third mounting hole (41), the threaded member (51) is fixedly mounted on at least one of the mounting portion and the upper rail, the nut member (52) is located on the outer side of the upper rail (1), and the nut member (52) and the second section (512b) are threadedly connected.

2. The electric slide rail according to claim 1, characterized in that: The first section (512a) is connected to the second mounting hole (11) by interference fitting.

3. The electric slide rail according to claim 2, characterized in that: The outer wall surface of the first section (512a) is provided with a protrusion, and the first section (512a) is connected to the second mounting hole (11) by interference fitting through the protrusion.

4. The electric slide rail according to claim 1, characterized in that: The threaded member (51) is welded and fixed to the mounting portion.

5. The electric slide rail according to any one of claims 1 to 4, characterized in that: The motor bracket (4) is further provided with a notch portion (42), and the notch portion (42) is communicated with the third mounting hole (41).

6. The electric slide rail according to claim 5, characterized in that: The number of the connecting components (5) is two, and the two connecting components (5) are arranged at intervals along the extension direction of the upper rail (1), and the arrangement direction of the notch portion (42) and the third mounting hole (41) is arranged at an angle to the extension direction of the upper rail (1).

7. The electric slide rail according to any one of claims 1 to 4, characterized in that: The gear box (3) comprises a main body portion (31) and a frame portion (32), the frame portion (32) being used to support the main body portion (31), and the mounting portion being arranged on the frame portion (32).

8. The electric slide rail according to claim 7, characterized in that: The frame body (32) comprises a U-shaped plate (321) and two wing plates (322); the U-shaped plate (321) comprises a bottom plate portion (321a) and two side plate portions (321b); the two wing plates (322) are respectively connected to the two side plate portions (321b); and the wing plates (322) form the mounting portion.

9. The electric slide rail according to any one of claims 1 to 4, characterized in that: The motor bracket (4) is made of metal or plastic.

10. A seat assembly, characterized in that: It comprises a seat body and an electric slide rail, wherein the electric slide rail is the electric slide rail as described in any one of claims 1 to 9, and the seat body is connected to the upper rail (1).

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