Seat sliding rail and vehicle

Abstract

The utility model provides a seat sliding rail and a vehicle, the seat sliding rail comprises an upper rail assembly (1), a lower rail assembly (2) and a wire harness assembly (3), the upper rail assembly (1) is partially slidably installed in the lower rail assembly (2), the lower rail assembly (2) is provided with a limiting part (21) extending downwards, the wire harness assembly (3) comprises a drag chain (31), a wire harness containing space (31a) is formed in the drag chain (31), one end of the drag chain (31) is connected with the upper rail assembly (1), and the other end of the drag chain (31) is connected with the limiting part (21). The upper end of the drag chain (31) is provided with a concave part (31b) which is concave towards the interior of the drag chain (31), and at least the lower end of the limiting part (21) extends into the concave part (31b) and can slide relative to the concave part (31b). According to the seat sliding rail, the drag chain achieves the guiding and limiting functions through cooperation of the groove characteristics and the protruding characteristics of the lower rail assembly, the motion trail of the drag chain is guaranteed, it is guaranteed that the wire harness containing space in the drag chain is enough for containing various power supply wire harnesses, and the long-distance multifunctional power supply requirement of a seat is met.

Description

Technical Field

[0001] This application relates to the technical field of seats, and particularly relates to a seat slide rail and a vehicle. Background Art

[0002] With the development of automotive technology, the number of electronic devices on seats has gradually increased, the number of required power supply harnesses has gradually increased, and the front-back adjustment travel of seats has also gradually increased. How to meet the demand for stable power supply for seats with long-distance and multi-functional features has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Utility Model

[0003] The purpose of this application is to provide a seat slide rail and a vehicle to meet the demand for stable power supply for seats with long-distance and multi-functional features.

[0004] To solve the above technical problem, this application provides a seat slide rail, which includes an upper rail assembly, a lower rail assembly, and a wire harness assembly. The upper rail assembly is partially slidably installed inside the lower rail assembly, and the lower rail assembly has a limiting portion extending downward.

[0005] The wire harness assembly includes a drag chain. A wire harness accommodation space is formed inside the drag chain. One end of the drag chain is connected to the upper rail assembly. The upper end of the drag chain has a recessed portion recessed into its interior. At least the lower end of the limiting portion extends into the interior of the recessed portion and can slide relative to it.

[0006] According to the structural characteristics of the lower rail assembly of the seat slide rail of this application, a recessed portion recessed into its interior is provided at the upper end of the drag chain. At least the lower end of the limiting portion extends into the interior of the recessed portion and can slide relative to it. The limiting portion plays a role in limiting and guiding the drag chain, ensuring that the drag chain can slide synchronously with the upper rail assembly along the axial direction of the lower rail assembly to meet the power supply requirements during the long-distance adjustment of the seat. At the same time, in this embodiment, the drag chain realizes the guiding and limiting functions through the cooperation of the groove feature and the protruding feature of the lower rail assembly. The groove feature is integrated inside the outer shape structure of the drag chain, without separately occupying the internal space of the lower rail assembly. In this way, the wire harness accommodation space inside the drag chain can be increased, and the inside of the drag chain can sufficiently accommodate the power supply harnesses required for various functions, meeting the demand for multi-functional and stable power supply of the seat.

[0007] Optionally, the drag chain includes a connection joint for connecting to the upper rail assembly. The connection joint has a groove, and the groove forms part of the structure of the recessed portion. The width of the groove gradually expands in the direction close to the upper rail assembly.

[0008] Optionally, the seat slide rail further includes a vehicle body connecting member disposed on the lower rail assembly. A part of the vehicle body connecting member is located inside the lower rail assembly. An avoidance space is formed between the lower wall of the drag chain and the lower wall of the lower rail assembly. A part of the vehicle body connecting member located inside the lower rail assembly is located inside the avoidance space.

[0009] Optionally, the lower wall of the drag chain includes a first wall, a second wall, and a connecting wall connecting the first wall and the second wall. The first wall is in contact with the lower wall of the lower rail assembly. There is a spacing between the second wall and the lower wall of the lower rail assembly. The avoidance space is formed between the second wall and the lower wall of the lower rail assembly.

[0010] Optionally, the wire harness assembly further includes a wire harness box. The wire outlet end of the wire harness box communicates with one end of the lower rail assembly. A part of the drag chain is located inside the wire harness box. One end of the drag chain extends out from the wire outlet end of the wire harness box to connect to the upper rail assembly;

[0011] The bottom wall of the wire outlet end of the wire harness box is in contact with the bottom wall of the drag chain. The wire outlet end of the wire harness box has two limiting walls arranged along the width direction. A part of the drag chain is installed in a limited manner between the two limiting walls and can slide relatively.

[0012] Optionally, the bottom wall of the wire outlet end of the wire harness box includes a first guiding wall, a second guiding wall, and a guiding connecting wall connecting the first guiding wall and the second guiding wall. The first wall is in contact with the first guiding wall. The second wall is in contact with the second guiding wall. The connecting wall is in contact with the guiding connecting wall;

[0013] The wire outlet end of the wire harness box includes a side guiding wall. The side guiding wall faces the guiding connecting wall. The side guiding wall is in contact with the wall part of the drag chain facing away from the connecting wall. The side guiding wall and the guiding connecting wall form the two limiting walls.

[0014] Optionally, the wire harness accommodation space is an integral structure;

[0015] Or, at least one partition is provided inside the drag chain. The partition divides the wire harness accommodation space into at least two accommodation cavities.

[0016] Optionally, the upper rail assembly slides inside the lower rail assembly manually.

[0017] Optionally, a driving mechanism is further included. The driving mechanism is disposed inside the lower rail assembly, on one side of the drag chain. The driving mechanism is connected to the upper rail assembly and is used to drive the upper rail assembly to slide relative to the lower rail assembly.

[0018] The present application further provides a vehicle, including a vehicle body, a seat, and the aforesaid seat slide rail. The lower rail assembly in the seat slide rail is connected to the vehicle body, and the upper rail assembly in the seat slide rail is connected to the seat.

[0019] The vehicle of the present application includes the aforesaid seat slide rail, and thus has the same technical effects as the aforesaid seat slide rail, which will not be elaborated herein. Description of the Drawings

[0020] Figure 1 It is a schematic structural view of a specific embodiment of the seat slide rail provided by the present application;

[0021] Figure 2 is Figure 1 exploded view of the wire harness assembly in the seat slide rail;

[0022] Figure 3 is Figure 1 schematic structural view of the seat slide rail at a second angle;

[0023] Figure 4 is Figure 1 transverse sectional view of the drag chain in the seat slide rail;

[0024] Figure 5 is Figure 1 schematic structural view of the wire outlet end of the wire harness box in the seat slide rail;

[0025] Wherein, Figures 1-5 the reference numerals in are as follows:

[0026] 1 - upper rail assembly; 11 - upper slide rail; 11a - limiting groove;

[0027] 2 - lower rail assembly; 21 - limiting part; 2A - idle area; 22 - lower wall;

[0028] 3 - wire harness assembly; 31 - drag chain; 311 - connecting joint; 311b - groove; 312 - fixing joint; 31a - wire harness accommodation space; 31b - recess; 31A - first wall; 31B - second wall; 31C - connecting wall; 32 - wire harness box; 321 - first guiding wall; 322 - second guiding wall; 323 - guiding connecting wall; 324 - side guiding wall; 32A - upper cover; 32B - bottom shell; 32a - guiding groove; 33 - power supply wire harness; 331 - seat connection end; 332 - vehicle body connection end; 34 - partition;

[0029] 4 - vehicle body connecting piece;

[0030] A - avoidance space. Detailed Description of the Embodiments

[0031] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Please refer to Figures 1-4 , Figure 1 A structural schematic diagram of a specific embodiment of the seat slide provided in this application; Figure 2 for Figure 1 Exploded view of the wiring harness assembly in the seat rail; Figure 3 for Figure 1 A schematic diagram of the structure of the second angle of the seat rail; Figure 4 for Figure 1 Transverse section through an energy chain in a seat rail.

[0033] This embodiment provides a seat slide rail, comprising an upper rail assembly 1, a lower rail assembly 2 and a wiring harness assembly 3, wherein the upper rail assembly 1 is partially slidably mounted inside the lower rail assembly 2, and the lower rail assembly 2 has a limit portion 21 extending downward;

[0034] The wiring harness assembly 3 includes a drag chain 31, a wiring harness accommodating space 31a is formed inside the drag chain 31, one end of the drag chain 31 is connected to the upper rail assembly 1, the upper end of the drag chain 31 has a recessed portion 31b recessed into the interior thereof, at least the lower end of the limiting portion 21 extends to the interior of the recessed portion 31b and can slide relatively.

[0035] Depend on Figure 4 It can be seen that in this embodiment, the upper rail assembly 1 includes an upper rail 11, which is roughly in the shape of a Chinese character "几", and the two ends of the upper rail 11 in the width direction form a limit groove 11a with an upper end opening, and at least the lower end of the limit portion 21 extends to the corresponding limit groove 11a. It can be seen that the limit portion 21 can play a role in limiting and guiding the upper rail 11, ensuring that the upper rail assembly 1 can only slide axially inside the lower rail assembly 2.

[0036] The seat slide rail of this embodiment is based on the structural characteristics of the lower rail assembly 2. A recessed portion 31b recessed into the interior of the drag chain 31 is provided at the upper end of the drag chain 31. At least the lower end of the limiting portion 21 extends to the interior of the recessed portion 31b and can slide relatively. Thus, the limiting portion 21 simultaneously limits and guides the drag chain 31, ensuring that the drag chain 31 can slide along the axial direction of the lower rail assembly 2 synchronously with the upper rail assembly 1, meeting the long-distance power supply requirements during the front and rear position adjustment of the seat. At the same time, by Figure 3 and Figure 4It can be seen that in this embodiment, the drag chain 31 realizes the guiding and limiting functions through the cooperation of the groove feature and the convex feature of the lower rail assembly 2. The groove feature is integrated inside the outer shape structure of the drag chain 31, without separately occupying the internal space of the lower rail assembly 2. In this way, the outer shape structure of the drag chain 31 can be increased, the wire harness accommodation space 31a inside the drag chain 31 can be increased, and the power supply wire harness required for numerous functions can be sufficiently accommodated inside the drag chain 31 to meet the multi-functional stable power supply requirements of the seat.

[0037] Please refer to Figure 5 , Figure 5 is Figure 1 a schematic structural diagram of the wire outlet end of the wire harness box on the seat slide rail.

[0038] In this embodiment, the drag chain 31 includes a connection joint 311 for connecting to the upper rail assembly 1. The connection joint 311 has a groove 311b, and the groove 311b forms part of the structure of the recessed portion 31b. The width of the groove 311b gradually expands in the direction close to the upper rail assembly 1.

[0039] It can be understood that during the assembly process of the drag chain 31 and the lower rail assembly 2, the drag chain 31 is first inserted and fitted with the limiting portion 21 through the groove 311b provided on the connection joint 311. Therefore, the width of the groove 311b provided on the connection joint 311 gradually expands in the direction close to the upper rail assembly 1, which can absorb the installation error and ensure that the drag chain 31 can smoothly enter the inside of the lower rail assembly 2 and smoothly realize the pulling out and retracting functions of the power supply wire harness.

[0040] In this embodiment, except for the connection joint 311, the width of the recessed portion 31b provided on other parts of the drag chain 31 remains unchanged, ensuring the reliable positioning of the recessed portion 31b and the limiting portion 21, and ensuring that the drag chain 31 can only slide along the axial direction of the lower rail assembly 2, reducing the possibility of the drag chain 31 performing other actions except sliding along the axial direction of the lower rail assembly 2.

[0041] Please continue to refer to Figure 3 , in this embodiment, the seat slide rail further includes a vehicle body connecting member 4 provided on the lower rail assembly 2. The vehicle body connecting member 4 is used to connect the lower rail assembly 2 and the vehicle body. Part of the vehicle body connecting member 4 is located inside the lower rail assembly 2. An avoidance space A is formed between the lower wall of the drag chain 31 and the lower wall 22 of the lower rail assembly 2, and part of the vehicle body connecting member 4 located inside the lower rail assembly 2 is located inside the avoidance space A.

[0042] It can be seen that in this embodiment, by designing the outer shape structure of the drag chain 31, the drag chain 31 can avoid the body connection member 4, so as to better fit the surrounding environment, maximize the use of the internal space of the lower rail assembly 2, increase the outer shape structure of the drag chain 31, and increase the volume of the wire harness accommodation space 31a inside the drag chain 31, so that the wire harness accommodation space 31a inside the drag chain 31 is sufficient to accommodate the power supply wire harness required for many functions, meeting the demand for stable multi-functional power supply of the seat.

[0043] Specifically, as Figure 4 shown, in this embodiment, the lower wall of the drag chain 31 includes a first wall 31A, a second wall 31B, and a connecting wall 31C connecting the first wall 31A and the second wall 31B. The first wall 31A is attached to the lower wall 22 of the lower rail assembly 2, and there is a gap between the second wall 31B and the lower wall 22 of the lower rail assembly 2, and an avoidance space A is formed between the second wall 31B and the lower wall 22 of the lower rail assembly 2.

[0044] In this way, the first wall 31A is attached to the lower wall 22 of the lower rail assembly 2, and the lower wall 22 of the lower rail assembly 2 plays a supporting role for the drag chain 31. An avoidance space A is formed between the second wall 31B and the lower wall 22 of the lower rail assembly 2 to avoid the body connection member 4 and prevent interference between the drag chain 31 and the body connection member 4.

[0045] Please refer to Figure 1 、 Figure 2 and Figure 5 , in this embodiment, the wire harness assembly 3 further includes a wire harness box 32. The wire outlet end of the wire harness box 32 is communicated with one end of the lower rail assembly 2. Part of the drag chain 31 is located inside the wire harness box 32, and one end of the drag chain 31 extends out from the wire outlet end of the wire harness box 32 to connect to the upper rail assembly 1;

[0046] The bottom wall of the wire outlet end of the wire harness box 32 is attached to the bottom wall of the drag chain 31. The wire outlet end of the wire harness box 32 has two limiting walls arranged along the width direction, and part of the drag chain 31 is limited and installed between the two limiting walls and can slide relatively.

[0047] With the above settings, the wire harness box 32 can play a role in accommodating and protecting the drag chain 31 to prevent the drag chain 31 from being exposed; at the same time, the wire outlet end of the wire harness box 32 plays a guiding and limiting role for the drag chain 31 through the two limiting walls, ensuring the attitude of the drag chain 31 when entering the lower rail assembly 2 and ensuring the movement track of the drag chain 31.

[0048] Specifically, the bottom wall of the wire outlet end of the wire harness box 32 includes a first guiding wall 321, a second guiding wall 322, and a guiding connecting wall 323 connecting the first guiding wall 321 and the second guiding wall 322. The first wall 31A is attached to the first guiding wall 321, the second wall 31B is attached to the second guiding wall 322, and the connecting wall 31C is attached to the guiding connecting wall 323;

[0049] The wire harness box 32 has an outlet end including a side guiding wall 324. The side guiding wall 324 faces the guiding connection wall 323. The side guiding wall 324 is in contact with the wall of the drag chain 31 that faces away from the connection wall 31C. The side guiding wall 324 and the guiding connection wall 323 form two limiting walls.

[0050] In this way, the outlet end of the wire harness box 32 is designed by copying the outer shape structure of the drag chain 31. The drag chain 31 is supported in the height direction by the first guiding wall 321 and the second guiding wall 322. The drag chain 31 is located between the side guiding wall 324 and the guiding connection wall 323 in the width direction, thereby playing a role in limiting and guiding the drag chain 31 and ensuring that the drag chain 31 smoothly enters the inner part of the lower rail assembly 2.

[0051] Please continue to refer to Figure 4 , in this embodiment, there is a partition 34 inside the drag chain 31. The partition 34 divides the wire harness accommodation space 31a into two accommodation cavities, and both accommodation cavities can be used to accommodate the power supply wire harness 33. The above setting of the partition 34 can improve the stiffness of the drag chain 31 and ensure that the drag chain 31 reliably plays a role in protecting the power supply wire harness 33.

[0052] Of course, in practice, the number of partitions 34 provided inside the drag chain 31 is not limited. For example, at least one partition 34 can be provided inside the drag chain 31. The at least one partition 34 divides the wire harness accommodation space 31a into at least two accommodation cavities, and on the premise of ensuring sufficient accommodation of the power supply wire harness 33 required for multiple functions, the stiffness of the drag chain 31 is improved as much as possible.

[0053] Of course, in practice, it is also feasible not to provide a partition 34 inside the drag chain 31. At this time, the wire harness accommodation space 31a is an integral structure. On the premise of ensuring the stiffness of the drag chain 31, the drag chain 31 has the largest accommodation space to meet the accommodation requirements of more power supply wire harnesses 33.

[0054] Please continue to refer to Figure 3 , in this embodiment, an idle area 2A is formed inside the lower rail assembly 2 on one side of the drag chain 31. In this embodiment, the seat slide rail does not have a driving mechanism, and the upper rail assembly 1 slides manually inside the lower rail assembly 2 to reduce costs.

[0055] In some other embodiments of the present application, the seat slide rail further includes a driving mechanism. The driving mechanism is arranged inside the lower rail assembly 2 and on one side of the drag chain 31. The driving mechanism is connected to the upper rail assembly 1 and is used to drive the upper rail assembly 1 to slide relative to the lower rail assembly 2. In this way, in this embodiment, the position adjustment of the upper rail assembly 1 can be realized more conveniently and quickly through the driving mechanism.

[0056] In addition, in this embodiment, the volume of the idle area 2A is large enough to accommodate the driving mechanism, so that the seat slide rail of this embodiment can be compatible with both manual driving mode and electric driving mode at the same time.

[0057] Please continue to refer to Figure 2 , in this embodiment, the wire harness box 32 includes an upper cover 32A and a bottom shell 32B. The inside of the bottom shell 32B is a hollow structure, the upper end of the bottom shell 32B is an open end, the upper cover 32A is connected to the open end of the bottom shell 32B, and the upper cover 32A and the bottom shell 32B enclose a drag chain accommodating space for accommodating part of the drag chain 31.

[0058] At the same time, the inside of the bottom shell 32B has an arc-shaped guiding groove 32a, which can restrict the movement track of the drag chain 31, making the movement of the drag chain 31 smoother.

[0059] Furthermore, as Figure 2 shown, in this embodiment, one end of the drag chain 31 away from the upper rail assembly 1 has a fixed joint 312, and the fixed joint 312 is connected to the wire harness box 32. The specific connection method is not limited, such as snap connection, bolt connection, etc.

[0060] Furthermore, as Figure 2 shown, in this embodiment, the power supply wire harness 33 penetrates through the drag chain 31 and passes out from both ends of the drag chain 31. One end of the power supply wire harness 33 close to the upper rail assembly 1 has a seat connection end 331, and one end of the power supply wire harness 33 away from the upper rail assembly 1 has a vehicle body connection end 332. The seat connection end 331 is used to connect to the seat wire harness, and the vehicle body connection end 332 is used to connect to the vehicle body wire harness, so as to realize the electrical connection between the vehicle body power supply device and the seat electrical device.

[0061] In addition, in this embodiment, the drag chain 31 and the upper rail assembly 1 are preferably fixed by screws, and the connection is reliable. In practice, the drag chain 31 and the upper rail assembly 1 can also be fixed by pins, blind rivets, snap connections, etc.

[0062] This embodiment also provides a vehicle, including a vehicle body, a seat, and the aforementioned seat slide rail. The lower rail assembly 2 in the seat slide rail is connected to the vehicle body, and the upper rail assembly 1 in the seat slide rail is connected to the seat.

[0063] The vehicle of this embodiment includes the aforementioned seat slide rail, so it has the same technical effects as the aforementioned seat slide rail, which will not be elaborated here.

[0064] In addition, the wire harness box 32 is also fixed to the vehicle body.

[0065] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A seat slide rail, characterized in that, It includes an upper rail assembly (1), a lower rail assembly (2) and a wire harness assembly (3). The upper rail assembly (1) is partially slidably installed inside the lower rail assembly (2). The lower rail assembly (2) has a limiting portion (21) extending downward. The wire harness assembly (3) includes a drag chain (31). A wire harness accommodation space (31a) is formed inside the drag chain (31). One end of the drag chain (31) is connected to the upper rail assembly (1). The upper end of the drag chain (31) has a recessed portion (31b) recessed into its interior. At least the lower end of the limiting portion (21) extends into the interior of the recessed portion (31b) and is slidable relative to it.

2. The seat slide rail according to claim 1, characterized in that, The drag chain (31) includes a connection joint (311) for connecting to the upper rail assembly (1). The connection joint (311) has a groove (311b). The groove (311b) forms part of the structure of the recessed portion (31b). The width of the groove (311b) gradually expands in the direction close to the upper rail assembly (1).

3. The seat slide rail according to claim 1, characterized in that, The seat slide rail further includes a vehicle body connection member (4) provided on the lower rail assembly (2). The vehicle body connection member (4) is partially located inside the lower rail assembly (2). An avoidance space (A) is formed between the lower wall of the drag chain (31) and the lower wall (22) of the lower rail assembly (2). The part of the vehicle body connection member (4) located inside the lower rail assembly (2) is located inside the avoidance space (A).

4. The seat slide rail according to claim 3, wherein, The lower wall of the drag chain (31) includes a first wall (31A), a second wall (31B), and a connecting wall (31C) connecting the first wall (31A) and the second wall (31B). The first wall (31A) is in contact with the lower wall (22) of the lower rail assembly (2). There is a gap between the second wall (31B) and the lower wall (22) of the lower rail assembly (2). The avoidance space (A) is formed between the second wall (31B) and the lower wall (22) of the lower rail assembly (2).

5. The seat slide rail according to claim 4, characterized in that The wire harness assembly (3) further includes a wire harness box (32). The wire outlet end of the wire harness box (32) communicates with one end of the lower rail assembly (2). The drag chain (31) is partially located inside the wire harness box (32). One end of the drag chain (31) extends out from the wire outlet end of the wire harness box (32) to connect to the upper rail assembly (1). The bottom wall of the wire outlet end of the wire harness box (32) is in contact with the bottom wall of the drag chain (31). The wire outlet end of the wire harness box (32) has two limiting walls arranged along the width direction. Part of the drag chain (31) is limit-installed between the two limiting walls and is slidable relative to them.

6. The seat slide rail according to claim 5, characterized in that The bottom wall of the wire harness box (32) at the wire outlet end includes a first guiding wall (321), a second guiding wall (322), and a guiding connection wall (323) connecting the first guiding wall (321) and the second guiding wall (322). The first wall (31A) is in contact with the first guiding wall (321), the second wall (31B) is in contact with the second guiding wall (322), and the connection wall (31C) is in contact with the guiding connection wall (323); The wire outlet end of the wire harness box (32) includes a side guiding wall (324). The side guiding wall (324) faces the guiding connection wall (323). The side guiding wall (324) is in contact with the wall part of the drag chain (31) facing away from the connection wall (31C). The side guiding wall (324) and the guiding connection wall (323) form two of the limiting walls.

7. The seat slide rail according to any one of claims 1-6, characterized in that, The wire harness accommodating space (31a) is of an integral structure; Or, at least one partition (34) is provided inside the drag chain (31), and the partition (34) divides the wire harness accommodating space (31a) into at least two accommodating cavities.

8. The seat slide rail according to any one of claims 1-6, characterized in that, The upper rail assembly (1) slides manually inside the lower rail assembly (2).

9. The seat slide rail according to any one of claims 1-6, characterized in that, It further includes a driving mechanism. The driving mechanism is arranged inside the lower rail assembly (2) and on one side of the drag chain (31). The driving mechanism is connected to the upper rail assembly (1) and is used to drive the upper rail assembly (1) to slide relative to the lower rail assembly (2).

10. A vehicle, characterized in that, It includes a vehicle body, a seat, and the seat slide rail according to any one of claims 1-9. The lower rail assembly (2) in the seat slide rail is connected to the vehicle body, and the upper rail assembly (1) in the seat slide rail is connected to the seat.

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