A seat assembly and an electric slide rail

Abstract

The present invention discloses a seat assembly and an electric slide rail. The electric slide rail includes a slide rail assembly, and the slide rail assembly includes an upper rail and a lower rail. The lower rail is fixed to the vehicle floor, and the upper rail is directly or indirectly fixed to the seat body. It further includes an electric drive mechanism and a rack. One side of the rack is a tooth surface, and the other side is provided with riveting posts. The lower rail is provided with through holes. The riveting posts of the rack pass through the through holes and are fixed by a riveting process. The electric drive mechanism has an output gear, and the output gear meshes with the rack to drive the seat body to displace relative to the lower rail. With this structure, the rack and the lower rail adopt a riveting and fixing scheme, which takes less time in the installation process and has a higher installation efficiency. Moreover, since there is no problem of difficult grasping of screws, the rack can be directly grasped by a manipulator or the like for installation. In this way, the installation efficiency can be further improved and the labor cost can be saved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and particularly relates to a seat assembly and an electric slide rail. Background Art

[0002] Currently, the adjustment methods for vehicle interior seats on the market mainly include manual adjustment and electric adjustment. Among them, electric adjustment has gradually dominated the market due to its advantages such as high automation and more labor-saving adjustment process.

[0003] The seat assembly with electric adjustment includes a seat body, an upper rail fixed to the seat body, a lower rail fixed to the vehicle floor, a rack, and an electric drive mechanism. The rack is fixed inside the lower rail by screws. The electric drive mechanism includes a motor, and a gear is installed on the rotating shaft of the motor. The gear can mesh with the rack, and the rotation of the motor can drive the seat body to adjust its front and rear positions.

[0004] However, in the existing technology solutions, the rack and the lower rail are fixed by screws, which requires on-site personnel to tighten each screw one by one. The installation process takes a long time and the installation efficiency is low.

[0005] Therefore, how to provide a solution to overcome the above defects is still a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a seat assembly and an electric slide rail. Among them, the installation efficiency of the rack in the electric slide rail is relatively high, which can save labor costs.

[0007] To solve the above technical problems, the present invention provides an electric slide rail, including a slide rail assembly. The slide rail assembly includes an upper rail and a lower rail. The lower rail is fixed to the vehicle floor, and the upper rail is directly or indirectly fixed to the seat body. It also includes an electric drive mechanism and a rack. One side of the rack is a tooth surface, and the other side is provided with riveting posts. The lower rail is provided with through holes. The riveting posts of the rack pass through the through holes and are fixed by a riveting process. The electric drive mechanism has an output gear, and the output gear meshes with the rack to drive the seat body to displace relative to the lower rail.

[0008] Adopting this structure, the rack and the lower rail adopt a riveting fixation scheme. Through a riveting device, instantaneous pressurization and riveting of the riveting posts can be achieved. The installation process takes a short time and the installation efficiency is high. Since screws are not used in the installation process, there is no problem of difficulty in the manipulator grasping the screws. In other words, after adopting the above scheme, the rack can be directly grasped by devices such as a manipulator for installation. In this way, the installation efficiency can be further improved and labor costs can be saved.

[0009] Optionally, the rack is made of plastic.

[0010] Optionally, the number of the riveting posts is multiple, and the riveting posts are arranged at intervals along the extending direction of the rack.

[0011] Optionally, the number of the slide rail assemblies is two, and the two slide rail assemblies are arranged at intervals; the electric drive mechanism includes a motor and a gearbox, a rotating shaft of the motor is in transmission connection with an input shaft of the gearbox, and an output gear is mounted on an output shaft of the gearbox.

[0012] Optionally, a connecting cross beam is further included, two ends of the connecting cross beam are respectively connected with the upper rails of the two slide rail assemblies, and the motor is mounted on the connecting cross beam.

[0013] Optionally, the rotating shaft of the motor is in transmission connection with the input shaft of the gearbox through a flexible shaft assembly.

[0014] Optionally, the flexible shaft assembly includes a flexible shaft and a sleeve sleeved on the flexible shaft.

[0015] Optionally, a plurality of brackets are further included for fixing the flexible shaft assembly.

[0016] Optionally, the upper rail is provided with a sliding member, and the upper rail can be slidably connected with the lower rail through the sliding member.

[0017] The present invention further provides a seat assembly, including a seat body and an electric slide rail, and the electric slide rail is the above-mentioned electric slide rail.

[0018] Since the above-mentioned electric slide rail already has the above technical effects, then, the seat assembly having the electric slide rail should also have similar technical effects, which will not be elaborated herein. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a specific embodiment of the electric slide rail provided by the present invention; <\

[0020] Figure 2 is a schematic structural diagram of the lower rail and the rack;

[0021] Figure 3 is a schematic structural diagram before and after the rack is riveted;

[0022] Figure 4 is a schematic structural diagram of the electric drive mechanism, the connecting cross beam, the upper rail and the rack;

[0023] Figure 5 is a partial enlarged view of the connection part between the electric drive mechanism and the rack.

[0024] Figures 1-5The reference numerals in the drawings are explained as follows:

[0025] 1 Slide rail assembly, 11 Upper rail, 111 Sliding member, 12 Lower rail, 121 Through hole;

[0026] 2 Rack, 21 Tooth surface, 22 Riveting post, 221 Riveting joint;

[0027] 3 Electric drive mechanism, 31 Motor, 32 Gearbox, 321 Output gear, 33 Flexible shaft assembly, 331 Flexible shaft, 332 Sleeve;

[0028] 4 Connecting cross beam, 41 Shaft support, 42 Motor support. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0030] As used herein, "a number of" refers to an indefinite number of multiple, usually more than two; and when "a number of" is used to represent the number of several components, it does not represent the mutual relationship in terms of quantity between these components.

[0031] Please refer to Figures 1-5 , Figure 1 which is a schematic structural diagram of a specific implementation manner of the electric slide rail provided by the present invention, Figure 2 is a schematic structural diagram of the lower rail and the rack, Figure 3 is a schematic structural diagram of the rack before and after riveting, Figure 4 is a schematic structural diagram of the electric drive mechanism, the connecting cross beam, the upper rail and the rack, Figure 5 is a partial enlarged view of the connection between the electric drive mechanism and the rack.

[0032] As Figures 1-3 shown, the present invention provides an electric slide rail, including a slide rail assembly 1. The slide rail assembly 1 includes an upper rail 11 and a lower rail 12. The lower rail 12 is fixed to the vehicle floor, and the upper rail 11 is directly or indirectly fixed to the seat body (not shown in the figure), and the upper rail 11 can slide relative to the lower rail 12 to adjust the position of the seat body in the vehicle body.

[0033] It should be noted that the naming of the above "upper rail" and "lower rail" is mainly based on the positional relationship of the components to which the relevant rails are fixed, and does not necessarily refer to the positional relationship of these two rails during installation. It can be known that the seat body is located above the vehicle floor. Therefore, in this embodiment, the rail connected to the seat body is called the upper rail 11, and the rail connected to the vehicle floor is called the lower rail 12. During installation, the upper rail 11 may be embedded in the lower rail 12.

[0034] Specifically, it further includes an electric drive mechanism 3 and a rack 2. One side of the rack 2 is a tooth surface 21, and the other side is provided with riveting posts 22. The lower rail 12 is provided with through holes 121. The riveting posts 22 of the rack 2 can pass through the through holes 121 and be fixed to the upper rail 11 or the lower rail 12 through a riveting process. The electric drive mechanism 3 has an output gear 321, and the output gear 321 meshes with the rack 2 to drive the seat body to displace relative to the lower rail 12.

[0035] With this structure, the rack 2 and the lower rail 12 adopt a riveting and fixing scheme. Through a riveting device, instantaneous pressurization and riveting of the riveting posts 22 can be achieved. The installation process takes a short time and has a high installation efficiency. Since screws are not used in the installation process, there is no problem of difficulty for the manipulator to grasp the screws. In other words, after adopting the above scheme, the rack 2 can be directly grasped by devices such as a manipulator for installation. In this way, the installation efficiency can be further improved and the labor cost can be saved.

[0036] Moreover, in the prior art, the screw connection scheme has problems such as screw loosening and decreased connection reliability due to reasons such as vehicle body vibration under long-term use conditions. However, the riveting scheme provided by the present invention does not have similar problems, and the connection reliability of the rack 2 is still relatively high under long-term use conditions.

[0037] In addition, most of the racks 2 in the prior art are made of metal. The meshing of this material rack 2 with the gear is a collision between metal and metal. And due to the existence of the gear clearance, during use, it is easy to generate relatively large noise or abnormal noise between the gear and the metal rack, and the user experience is poor.

[0038] In response to this, in the embodiment of the present invention, a rack 2 made of plastic material can be selected. The plastic has good tolerance. During assembly, there can be a clearance-free fit between the rack 2 and the gear. In this way, the decibel value of the noise generated by the collision between the gear and the rack 2 is small, the tone quality is good, there is no abnormal noise, and the user experience can be improved.

[0039] In addition, the rack 2 made of plastic material is also convenient for processing and has a relatively light weight, which has a positive effect on reducing the weight and emissions of the vehicle. At the same time, the rack 2 made of plastic material can also be conveniently riveted. Please refer to Figure 3 ., before riveting, the riveting posts 22 can be cylindrical with equal diameters. Then, by instantaneously heating each riveting post 22 and using a riveting head to pressurize, hold the pressure, and cool the melted riveting post 22, a riveting joint 221 with a relatively large radial dimension can be formed. The riveting joint 221 can cooperate with the rack 2 itself to abut against the fixed rail of the rack 2 at both axial ends of the riveting post 22, thereby reliably fixing the rack 2.

[0040] The number of the above-mentioned riveting posts 22 can be one or multiple, and can be specifically set according to actual needs. In the embodiment of the present invention, the number of the riveting posts 22 is preferably set to be multiple, and each riveting post 22 can be arranged at intervals along the extending direction of the rack 2. Correspondingly, the same number of through holes 121 also need to be provided on the lower rail 12, and each riveting post 22 can be connected to each through hole 121 in one-to-one correspondence; in addition, in the solution of the attached drawing, the riveting posts 22 of the rack 2 are arranged in a single row. In fact, they can also be arranged in multiple rows, which is also an option that can be adopted in specific implementation.

[0041] Please refer to again Figure 1 , the number of the slide rail assemblies 1 can be two, the two slide rail assemblies 1 can be arranged at intervals, the rack 2 can be fixed to the lower rail 12. Since the lower rail 12 is a fixed part, correspondingly, the rack 2 is also fixedly arranged. At this time, the electric drive mechanism 3 can be installed on the seat body to perform synchronous displacement with the seat body.

[0042] Combined with Figure 4 , Figure 5 , the electric drive mechanism 3 can include a motor 31 and a gearbox 32. The rotating shaft of the motor 31 can be in transmission connection with the input shaft of the gearbox 32, and the output shaft of the gearbox 32 can be installed with the aforementioned output gear 321 to mesh with the tooth surface 21 of the rack 2.

[0043] The above-mentioned gearbox 32 mainly realizes the function of speed regulation through meshing gears. In specific practice, it can adopt a parallel shaft type gear mechanism or a planetary gear mechanism, as long as it can meet the use requirements.

[0044] Furthermore, a connecting cross beam 4 can also be included. The connecting cross beam 4 can span across the two slide rail assemblies 1, and the two end parts of the connecting cross beam 4 are respectively connected to the upper rails 11 of the two slide rail assemblies 1. Specifically, it can be connected to the upper rail 11 through a connecting piece in the form of a screw or by welding.

[0045] The motor 31 can be installed on the connecting cross beam 4, specifically through a motor bracket 42. Combined with Figure 4 , the motor bracket 42 and the connecting cross beam 4 can be fixed by welding, clamping or clamping + welding, etc. The number of the motor brackets 42 can be two, and both of the two motor brackets 42 can be provided with support grooves. The two lateral end parts of the outer shell of the motor 31 can be clamped in the two support grooves, and then, the motor 31 can be further fixed by cooperating with a connecting piece in the form of a screw or a welding process.

[0046] It can be understood that the above-mentioned solution of fixing the motor 31 by the motor bracket 42 is only a preferred solution of the embodiment of the present invention, and it cannot be used as a limitation on the scope of implementation of the electric slide rail provided by the present invention. Under the condition of meeting the functions, other solutions can also be used to fix the motor 31; for example, the motor bracket 42 can also be fixed by connecting parts in the form of screws, etc., or the rotating shaft of the motor 31 can be directly positioned by using a solution of matching a bearing seat and a bearing.

[0047] By driving the two upper rails 11 to move through the motor 31 and the connecting beam 4, the synchronization of the displacement of the two upper rails 11 can be ensured, and the problem of sliding and blocking can be overcome to a large extent.

[0048] The rotating shaft of the motor 31 can be connected to the input shaft of the gearbox 32 through the flexible shaft assembly 33. Specifically, the flexible shaft assembly 33 may include a flexible shaft 331 and a sleeve 332 sleeved on the flexible shaft 331. The flexible shaft 331 is used to transmit power. Since it can bend and deform, the layout position of the motor 31 can be more flexible, which can reduce the coaxiality requirements between the motor 31 and the gearbox 32, making the installation of the motor 31 easier. In addition, the flexible shaft 331 can absorb a certain amount of torque. Therefore, when starting to adjust the seat, there will be no sense of frustration, which can improve the comfort of the user during use.

[0049] The sleeve 332 is mainly used to determine the installation position of the flexible shaft 331 to avoid positional movement of the flexible shaft 331 during rotation, which is conducive to ensuring the stability of the transmission; the material of the sleeve 332 can be plastic or rubber, etc., which is light and has a certain degree of flexibility to adapt to the bending deformation of the flexible shaft 331.

[0050] Still Figure 4 As shown, it can also include a number of shaft brackets 41, which can be installed on the connecting beam 4 or on the upper rail 11, and are mainly used to fix the flexible shaft assembly 33. One end of these shaft brackets 41 can be fixed to the connecting beam 4 by snapping, welding, snapping + welding or threaded connection, and the other end can be provided with a snap hole or a slot for installing the flexible shaft assembly 33 to limit the installation position of the flexible shaft assembly 33.

[0051] Here, the embodiment of the present invention does not limit the number and installation position of the shaft bracket 41, and can be specifically set according to actual needs, or can also be set with reference to the scheme in the accompanying drawings.

[0052] The upper rail 11 can also be provided with a sliding component 111, which can specifically be a roller or the like. With such a configuration, on the one hand, the upper rail 11 can be supported to avoid direct friction between the upper rail 11 and the lower rail 12 as much as possible, and the noise generated thereby. On the other hand, the smoothness of the sliding of the upper rail 11 relative to the lower rail 12 can be improved, and the sliding jam between the upper rail 11 and the lower rail 12 can be overcome to a large extent.

[0053] The present invention further provides a seat assembly, including a seat body and an electric slide rail, wherein the electric slide rail is the electric slide rail involved in the above-mentioned embodiments.

[0054] Since the above-mentioned electric slide rail already has the above-mentioned technical effects, the seat assembly with the electric slide rail should also have similar technical effects, so it will not be described in detail here.

[0055] The above are only preferred embodiments 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 principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An electric slide rail, comprising a slide rail assembly (1), wherein the slide rail assembly (1) comprises an upper rail (11) and a lower rail (12), wherein the lower rail (12) is fixed to a vehicle floor, and the upper rail (11) is directly or indirectly fixed to a seat body, wherein: The invention also includes an electric drive mechanism (3) and a rack (2), one side of the rack (2) is a tooth surface (21), and the other side is provided with a rivet column (22), the lower rail (12) is provided with a through hole (121), the rivet column (22) of the rack (2) passes through the through hole (121) and is fixed by a riveting process, the electric drive mechanism (3) has an output gear (321), the output gear (321) is engaged with the rack (2) to drive the seat body to move relative to the lower rail (12); the material of the rack (2) is plastic; the number of the rivet columns (22) is three or more, and each rivet column (22) is arranged at intervals along the extension direction of the rack (2), and the output gear (321) is located on the lower side of the rack (2).

2. The electric slide rail according to claim 1, characterized in that: The number of the slide rail assemblies (1) is two, and the two slide rail assemblies (1) are arranged at intervals; The electric drive mechanism (3) comprises a motor (31) and a gearbox (32); the rotating shaft of the motor (31) is in transmission connection with the input shaft of the gearbox (32); and the output shaft of the gearbox (32) is equipped with the output gear (321).

3. The electric slide rail according to claim 2, characterized in that: It also includes a connecting beam (4), the two ends of which are respectively connected to the upper rails (11) of the two slide rail assemblies (1), and the motor (31) is installed on the connecting beam (4).

4. The electric slide rail according to claim 3, characterized in that: The rotating shaft of the motor (31) is connected to the input shaft of the gearbox (32) through a flexible shaft assembly (33).

5. The electric slide rail according to claim 4, characterized in that: The flexible shaft assembly (33) includes a flexible shaft (331) and a sleeve (332) externally mounted on the flexible shaft (331).

6. The electric slide rail according to claim 4, characterized in that: It also includes several brackets for fixing the flexible shaft assembly (33).

7. The electric slide rail according to claim 2, characterized in that: The upper rail (11) is provided with a sliding component (111), and the upper rail (11) can be slidably connected to the lower rail (12) via the sliding component (111).

8. A seat assembly, comprising a seat body and an electric slide rail, characterized in that: The electric slide rail is the electric slide rail according to any one of claims 1 to 7.

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