Limiting mechanism for sliding rail of automobile seat

Abstract

The utility model discloses an automobile seat sliding rail limiting mechanism which comprises a left sliding rail and a right sliding rail, and an adjusting handle is arranged between the left sliding rail and the right sliding rail. The left sliding rail comprises an upper rail and a lower rail, and the upper rail and the lower rail are in sliding connection; a locking plate is arranged on the inner side edge of the upper rail and movably connected with the inner side edge of the upper rail. One end of the locking plate is connected with the adjusting handle, and the other end of the locking plate is provided with a return torsion bar. According to the utility model, through the adjusting handle and the symmetrical left and right slide rail structures, the overall structure is simplified, and the complexity of the mechanism is reduced; the locking plate is movably connected with the upper rail, and the design of a return torsion bar is combined, so that the stability and the accuracy of the locking plate in the adjusting process are ensured; and meanwhile, the spring bolt is accurately matched with the limiting clamping head, and the balls are arranged between the sliding way and the inner wall of the upper rail, so that the sliding smoothness and durability of the sliding rail are further improved, and more comfortable and safer riding experience is provided for a user.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and particularly relates to a limiting mechanism for an automobile seat slide rail. Background Technique

[0002] In view of the diversity of the space requirements of seats due to the differences in passenger body types, the front-back adjustment function of automobile seats is particularly important. The realization of this function mainly depends on the seat slide rail system, which allows the seat to move flexibly in the vehicle compartment. According to different driving power sources, seat slide rails can be divided into two major categories: manual and electric. In a manual slide rail system, the seat is ingeniously placed on the slide rail. By operating the opening and closing states of the lock, passengers can freely slide or fix the seat position. Specifically, the control of the lock usually depends on a complex link mechanism, which operates through a handle, links the connecting rods, and finally controls the opening and closing states of the locking tongue.

[0003] However, the existing design of the link mechanism has an overly complex structure, including too many rotating components and movable joints. This not only greatly occupies the precious space inside the slide rail, bringing challenges to the internal layout of the vehicle, but also increases the risk of mechanism loosening and generating abnormal noises, which may shorten the service life of the seat and reduce the user's riding experience. Summary of the Invention

[0004] The purpose of the utility model is to provide a limiting mechanism for an automobile seat slide rail to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A limiting mechanism for an automobile seat slide rail includes a left slide rail and a right slide rail, where the structures of the left slide rail and the right slide rail are the same and symmetrically arranged; an adjustment handle is provided between the left slide rail and the right slide rail, where the adjustment handle has a "冂" - shaped structure, and both ends of the adjustment handle are respectively connected to the left slide rail and the right slide rail; the left slide rail includes an upper rail and a lower rail, where the upper rail and the lower rail are slidably connected; the cross - section of the upper rail has an inverted "凹" - shaped structure, and a limiting chute is opened at the lower end of the upper rail; the cross - section of the lower rail is a rectangular structure with an open upper end, and both sides of the upper end of the lower rail are bent outwards to form slide ways, and the slide ways are arranged in the limiting chute and slidably connected to it; support seats are respectively provided below both ends of the lower rail, and the support seats are fixedly connected to the automobile floor; a locking plate is provided on the inner side of the upper rail, and the locking plate is movably connected to the inner side of the upper rail; one end of the locking plate is connected to the adjustment handle, and a return torsion bar is provided at the other end of the locking plate; one end of the return torsion bar is fixedly connected to the top of the locking plate, and the other end of the return torsion bar is fixedly connected to the inner side of the upper rail.

[0006] Preferably, one end of the locking plate near the return torsion bar bends towards the upper track to form a locking tongue, and a plurality of locking holes are provided on the locking tongue; an avoidance hole adapted to the locking tongue is provided on the inner side of the upper track, and the locking tongue penetrates through the avoidance hole and extends towards the lower track; a slideway on one side of the lower track near the locking plate bends downwards to form a limiting portion, and a plurality of limiting latches are equidistantly arranged along the length direction of the limiting portion, and the limiting latches are adapted to the locking holes provided on the locking tongue.

[0007] Preferably, a ball is provided between the slideway and the inner wall of the upper track, and stoppers are provided at both ends of the slideway.

[0008] Preferably, a fixed shaft is provided at one end of the locking plate near the adjusting handle, one end of the fixed shaft is fixedly connected to the inner side of the locking plate, and the other end of the fixed shaft penetrates through the adjusting handle and is fixedly connected thereto.

[0009] Preferably, a positioning block is provided at one end of the locking plate near the fixed shaft, and a positioning hole adapted to the positioning block is provided on the adjusting handle.

[0010] Preferably, one end of the locking plate near the fixed shaft bends towards the adjusting handle to form a limiting groove, and the adjusting handle is arranged in the limiting groove.

[0011] Preferably, a protruding block is provided at one end of the inner side of the upper track near the locking plate, and the protruding block and the inner side of the upper track form a clamping groove, and the top end of the locking plate is clamped in the clamping groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: by designing a simple "冂"-shaped adjusting handle and a symmetrical left and right slide rail structure, the present utility model significantly reduces the number of rotating components and movable joints, thereby simplifying the overall structure and reducing the complexity of the mechanism; not only effectively saves the space inside the slide rail, providing more possibilities for the layout of other components inside the vehicle, but also reduces the problems of looseness and abnormal noise caused by the complex structure; the movable connection mode of the locking plate and the upper track, combined with the design of the return torsion bar, ensures the stability and accuracy of the locking plate during the adjustment process; at the same time, the precise cooperation between the locking tongue and the limiting latches, and the setting of the balls between the slideway and the inner wall of the upper track further improve the sliding smoothness and durability of the slide rail, and extend the service life of the seat; due to the simplification of the structure, the limiting mechanism of the present utility model is also more convenient to operate, and the user can more easily control the forward and backward movement and locking of the seat through the adjusting handle, improving the comfort and convenience of the operation; effectively solves the problems existing in the prior art of the limiting mechanism of the automotive seat slide rail, improves the convenience, stability and durability of the seat adjustment, and provides a more comfortable and safe riding experience for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a structural diagram of the utility model;

[0014] Figure 2 It is a structural diagram of the left slide rail of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure explosion of the left slide rail of the utility model;

[0016] Figure 4 It is a structural diagram of the upper track of the utility model;

[0017] Figure 5 It is a structural diagram of the lower track of the utility model;

[0018] Figure 6 This is a front structural diagram of the locking plate of the utility model;

[0019] Figure 7 It is a rear structural schematic diagram of the locking plate of the utility model.

[0020] Among them: 1. Left slide rail; 101. Upper rail; 102. Lower rail; 103. Limiting slide groove; 104. Slide; 2. Right slide rail; 3. Adjusting handle; 4. Support seat; 5. Locking plate; 6. Return torsion bar; 7. Lock tongue; 8. Lock hole; 9. Avoidance hole; 10. Limiting clamp; 11. Ball bearing; 12. Stop block; 13. Fixed shaft; 14. Positioning block; 15. Positioning hole; 16. Limiting groove; 17. Clamping block; 18. Clamping slot. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] Please refer to Figures 1 to 7 To achieve the above objectives, the present invention provides the following technical solutions:

[0023] An automotive seat slide rail limiting mechanism includes a left slide rail 1 and a right slide rail 2, where the structures of the left slide rail 1 and the right slide rail 2 are the same and symmetrically arranged; an adjustment handle 3 is provided between the left slide rail 1 and the right slide rail 2, where the adjustment handle 3 has a "冂" - shaped structure, and both ends of the adjustment handle 3 are respectively connected to the left slide rail 1 and the right slide rail 2; the left slide rail 1 includes an upper rail 101 and a lower rail 102, where the upper rail 101 and the lower rail 102 are slidably connected; the cross - section of the upper rail 101 has an inverted "concave" - shaped structure, and a limiting chute 103 is opened at the lower end of the upper rail 101; the cross - section of the lower rail 102 is a rectangular structure with an open upper end, and both sides of the upper end of the lower rail 102 are bent outward to form slideways 104, and the slideways 104 are arranged in the limiting chute 103 and slidably connected thereto; support seats 4 are respectively provided below both ends of the lower rail 102, where the support seats 4 are fixedly connected to the automotive floor; a locking plate 5 is provided on the inner side of the upper rail 101, where the locking plate 5 is movably connected to the inner side of the upper rail 101; one end of the locking plate 5 is connected to the adjustment handle 3, and a return torsion bar 6 is provided at the other end of the locking plate 5; one end of the return torsion bar 6 is fixedly connected to the top end of the locking plate 5, and the other end of the return torsion bar 6 is fixedly connected to the inner side of the upper rail 101.

[0024] The limiting mechanism consists of a left slide rail 1 and a right slide rail 2. The two have the same structure and are symmetrically arranged to ensure that the seat can slide smoothly in the left - right direction. The adjusting handle 3 has a "冂" - shaped structure, and its two ends are respectively connected to the left slide rail 1 and the right slide rail 2, forming an integral control unit for operating the sliding and locking of the seat. Since the structures of the left slide rail 1 and the right slide rail 2 are the same, the structure of the left slide rail 1 will be described in detail in this embodiment. The left slide rail 1 includes an upper rail 101 and a lower rail 102. The cross - section of the upper rail 101 is an inverted "concave" - shaped structure, and a limiting chute 103 is provided at its lower end. The cross - section of the lower rail 102 is a rectangular structure with an open upper end, and the two side edges at the upper end are bent to form slideways 104. The slideways 104 are embedded in the limiting chute 103 to achieve the sliding connection between the two. Through the cooperation of the slideways 104 and the limiting chute 103, the upper rail 101 and the lower rail 102 allow the seat to slide in the front - back direction, which ensures the smoothness and stability of the sliding. Support seats 4 are provided below both ends of the lower rail 102, and the support seats 4 are fixedly connected to the vehicle floor to provide stable support for the slide rail and ensure the safety of the seat during the sliding process. A locking plate 5 is provided on the inner side edge of the upper rail 101. The locking plate 5 is movably connected to the inner side edge of the upper rail 101 and can move according to the operation of the adjusting handle 3. One end of the locking plate 5 is connected to the adjusting handle 3, and by operating the adjusting handle 3, the movement of the locking plate 5 can be controlled. A return torsion bar 6 is provided at the other end of the locking plate 5. One end of the return torsion bar 6 is fixedly connected to the top end of the locking plate 5, and the other end is fixedly connected to the inner side edge of the upper rail 101. The return torsion bar 6 provides a reset force for the locking plate 5 to ensure that the locking plate 5 can automatically return to its initial position after the adjusting handle 3 is released. The limiting mechanism of the vehicle seat slide rail of the present utility model realizes the sliding and locking functions of the seat through the sliding connection of the slide rail, the locking and adjusting functions of the locking plate 5, and the reset function of the return torsion bar 6. Users can easily control the front - back sliding and locking state of the seat by operating the adjusting handle 3 to meet different riding needs.

[0025] Please refer to Figures 4 to 7 As an embodiment of the present utility model, one side of the locking plate 5 near the end of the return torsion bar 6 bends downward and forms a locking tongue 7 toward the upper rail 101 side. A plurality of locking holes 8 are provided on the locking tongue 7. An avoidance hole 9 adapted to the locking tongue 7 is provided on the inner side edge of the upper rail 101. The locking tongue 7 passes through the avoidance hole 9 and extends toward the lower rail 102 side. The slideway 104 on one side of the lower rail 102 near the locking plate 5 bends downward to form a limiting portion. A number of limiting latches 10 are equidistantly arranged along the length direction of the limiting portion, and the limiting latches 10 are adapted to the locking holes 8 provided on the locking tongue 7.

[0026] The locking plate 5 is a key component connecting the adjustment handle 3 and the upper rail 101. The locking plate 5 is designed to be stably mounted on the inner side of the upper rail 101 and can be flexibly moved when needed; the locking plate 5 is bent toward the side of the upper rail 101 at the lower end close to the return torsion bar 6, and a protruding locking tongue 7 is formed. The locking tongue 7 is the core part of the locking mechanism, wherein the shape and size of the locking tongue 7 are carefully designed to ensure that it can accurately match the limiting card 10 on the lower rail 102; by providing a plurality of locking holes 8 on the locking tongue 7, wherein the locking holes 8 are provided for matching with the limiting card 10 on the lower rail 102, the number and position of the locking holes 8 are optimized to ensure that the seat can be locked in multiple positions, thereby meeting different riding needs; the inner side of the upper rail 101 is provided The seat is locked in place by the locking cam 7 and the locking cam 7 is locked in place by the locking cam 7.

[0027] When the user needs to unlock the seat, he or she only needs to release the adjusting handle 3, wherein the locking plate 5 is reset under the elastic action of the return torsion bar 6, so that the locking plate 5 drives the locking tongue 7 to move upward, and the limiting clamp 10 on the limiting part is inserted into the locking hole 8 on the locking tongue 7, thereby locking the seat in this position. The locking and unlocking functions of the seat are realized through the coordinated work of the locking plate 5, the locking tongue 7, the avoidance hole 9, the limiting part and the limiting clamp 10. This design is not only compact in structure and easy to operate, but also can ensure that the seat can be accurately locked in multiple positions, meeting the riding needs of different users.

[0028] See also Figure 3As an embodiment of the present invention, a ball bearing 11 is provided between the slide 104 and the inner wall of the upper track 101 , wherein stoppers 12 are provided at both ends of the slide 104 .

[0029] In the above-mentioned scheme, by cleverly setting the ball 11 between the slide 104 and the inner wall of the upper track 101, the ball 11 acts as a sliding medium, which greatly reduces the direct friction between the slide 104 and the upper track 101, thereby improving the smoothness and efficiency of sliding; when the seat moves back and forth on the slide rail, the slide 104 will slide along the inner wall of the upper track 101, and at this time the ball 11 will roll between the slide 104 and the upper track 101, forming a moving mode that combines rolling and sliding, which not only reduces friction resistance, but also reduces wear and extends the service life of the slide rail; the introduction of the ball 11 also plays a role in noise reduction and vibration reduction. Since the rolling of the ball 11 reduces the direct contact between the slide 104 and the upper track 101, the noise and vibration caused by friction are reduced, thereby improving the riding comfort; stoppers 12 are respectively provided at both ends of the slide 104, wherein the stopper 1 2 serves as a limiting device to prevent the slide 104 from exceeding a predetermined range during the sliding process; when the seat slides to the extreme position of the slide rail, the stopper 12 will contact the upper track 101 or adjacent components, thereby preventing the slide 104 from continuing to move. This limiting effect ensures the safety and stability of the seat during the sliding process; the stopper 12 also plays a buffering and protective role. When the seat slides to the extreme position, the stopper 12 can absorb part of the impact force to prevent damage or noise caused by direct impact; at the same time, the existence of the stopper 12 also reminds the user that the seat has reached the extreme position to avoid excessive operation; the ball 11 and the stopper 12 work together in the slide rail system to ensure the smooth sliding and safe limitation of the seat. The ball 11 reduces friction resistance and improves sliding efficiency and comfort; and the stopper 12 ensures the safety and stability of the seat during the sliding process, ensuring the long-term stable operation of the slide rail system.

[0030] Please refer to Figure 2 、 Figure 3 As an embodiment of the present invention, a fixed shaft 13 is provided at one end of the locking plate 5 close to the adjusting handle 3, wherein one end of the fixed shaft 13 is fixedly connected to the inner side of the locking plate 5, and the other end of the fixed shaft 13 passes through the adjusting handle 3 and is fixedly connected thereto.

[0031] In the above-mentioned scheme, a fixed shaft 13 is designed at one end of the locking plate 5 close to the adjusting handle 3. This fixed shaft 13 is a key component connecting the locking plate 5 and the adjusting handle 3, wherein the fixed shaft 13 ensures a firm connection and synchronous movement between the two; one end of the fixed shaft 13 is fixedly connected to the inner side edge of the locking plate 5, and this connection is usually achieved by welding, riveting or other reliable mechanical connection methods to ensure the firmness of the fixed shaft 13 on the locking plate 5; the other end of the fixed shaft 13 passes through the adjusting handle 3 and is fixedly connected to the adjusting handle 3. This through-connection method not only ensures the synchronous movement between the locking plate 5 and the adjusting handle 3, but also improves the strength and stability of the entire connection structure; the adjusting handle 3 is the user's operation for sliding and The main component of the lock is usually designed to be easy to hold and operate so that the user can easily adjust the position and locking status of the seat; by operating the adjustment handle 3, the user can control the movement of the locking plate 5; when the seat needs to be slid, the user will operate the adjustment handle 3 to unlock the locking plate 5, thereby allowing the slide 104 to slide freely on the upper track 101; when the seat needs to be locked, the user will operate the adjustment handle 3 again to move the locking plate 5 to the locked position, fixing the slide 104 on the upper track 101; since the fixed shaft 13 firmly connects the locking plate 5 and the adjustment handle 3 together, when the user operates the adjustment handle 3, the locking plate 5 will move accordingly. This synchronous movement ensures the accuracy and reliability of the seat sliding and locking functions.

[0032] Please refer to Figure 3 、 Figure 6 As an embodiment of the present invention, a positioning block 14 is provided at one end of the locking plate 5 close to the fixed shaft 13 , and a positioning hole 15 adapted to the positioning block 14 is opened on the adjusting handle 3 .

[0033] In the above-mentioned scheme, a positioning block 14 is designed at one end of the locking plate 5 near the fixed shaft 13. The positioning block 14 is a raised part, and the existence of the positioning block 14 is to ensure that the locking plate 5 can be accurately positioned with the adjustment handle 3 during the movement, thereby realizing precise locking of the seat; a positioning hole 15 adapted to the positioning block 14 is provided on the adjustment handle 3, and the positioning hole 15 is usually a round hole or a special-shaped hole, and its shape and position are designed to precisely match the positioning block 14. When the positioning block 14 is inserted into the positioning hole 15, the tight fit between the two can prevent the locking plate 5 from offsetting or shaking during the movement; the tight fit between the positioning block 14 and the positioning hole 15 can increase the connection strength between the locking plate 5 and the adjustment handle 3, thereby improving the stability of the seat in the locked state. This design makes the seat less likely to shake or shift during driving, thereby improving the riding comfort and safety.

[0034] Please refer to Figure 3 、 Figure 6 As an embodiment of the present invention, the locking plate 5 is bent toward the side of the adjustment handle 3 at one end close to the fixed shaft 13 to form a limiting groove 16, wherein the adjustment handle 3 is arranged in the limiting groove 16.

[0035] In the above-described scheme, the end of the locking plate 5 close to the fixed shaft 13 is bent toward the side of the adjusting handle 3 to form a limit groove 16. This limit groove 16 is a space with a specific shape and size, wherein the shape of the limit groove 16 is usually designed according to the shape and size of the adjusting handle 3 to ensure a close fit between the two; the adjusting handle 3 is arranged in the limit groove 16. This arrangement ensures that the adjusting handle 3 can be guided and restricted by the limit groove 16 during movement, thereby realizing precise adjustment and locking functions; the close fit between the limit groove 16 and the adjusting handle 3 can further increase the connection strength between the locking plate 5 and the left slide rail 1, thereby improving the stability of the seat in the locked state. This design makes the seat less likely to shake or shift during driving, thereby improving riding comfort and safety.

[0036] Please refer to Figure 3 、 Figure 4 As an embodiment of the present invention, an outwardly protruding block 17 is provided at one end of the inner side of the upper rail 101 near the locking plate 5, wherein the block 17 and the inner side of the upper rail 101 form a slot 18, and the slot 18 is engaged with the top end of the locking plate 5.

[0037] In the above-described solution, an outwardly protruding block 17 is designed at one end of the inner side of the upper rail 101 near the locking plate 5. This block 17 is a raised portion with a specific shape and size, and is designed to engage with the locking plate 5. A slot 18 is naturally formed between the block 17 and the inner side of the upper rail 101. The slot 18 is a space with a specific shape and depth for accommodating the top portion of the locking plate 5 and tightly engaging with it. The locking plate 5 is one of the key components of the seat sliding and locking mechanism. The top portion of the locking plate 5 is designed with a shape and size that matches the slot 18 to ensure that it can be accurately engaged in the slot 18, thereby making the connection between the locking plate 5 and the upper rail 101 stable. Through reasonable design and precise manufacturing, the block 17 and the slot 18 can guide the locking plate 5 to accurately engage and provide a stable connection in the locked state. This design not only improves the reliability and convenience of seat locking, but also ensures the stability and safety of the seat during driving.

[0038] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A car seat slide rail limiting mechanism, comprising a left slide rail (1) and a right slide rail (2), wherein the left slide rail (1) and the right slide rail (2) have the same structure and are symmetrically arranged; characterized in that: An adjustment handle (3) is provided between the left slide rail (1) and the right slide rail (2). The adjustment handle (3) has an inverted "U" - shaped structure, and both ends of the adjustment handle (3) are respectively connected to the left slide rail (1) and the right slide rail (2). The left slide rail (1) includes an upper rail (101) and a lower rail (102), and the upper rail (101) and the lower rail (102) are slidably connected. The cross - section of the upper rail (101) has an inverted "concave" - shaped structure, and a limit chute (103) is opened at the lower end of the upper rail (101). The cross - section of the lower rail (102) is a rectangular structure with an open upper end. On both sides of the upper end of the lower rail (102), they are bent outward to form slideways (104), and the slideways (104) are arranged in the limit chute (103) and are slidably connected thereto. Below both ends of the lower rail (102), support seats (4) are respectively provided, and the support seats (4) are fixedly connected to the vehicle floor. On the inner side of the upper rail (101), a locking plate (5) is provided, and the locking plate (5) is movably connected to the inner side of the upper rail (101). One end of the locking plate (5) is connected to the adjustment handle (3), and a return torsion bar (6) is provided at the other end of the locking plate (5). One end of the return torsion bar (6) is fixedly connected to the top of the locking plate (5), and the other end of the return torsion bar (6) is fixedly connected to the inner side of the upper rail (101).

2. The car seat slide rail limiting mechanism according to claim 1, characterized in that: One end of the locking plate (5) near the return torsion bar (6) is bent downward and toward the upper rail (101) to form a locking tongue (7), and a plurality of locking holes (8) are opened on the locking tongue (7). An avoidance hole (9) adapted to the locking tongue (7) is opened on the inner side of the upper rail (101), and the locking tongue (7) passes through the avoidance hole (9) and extends toward the lower rail (102). The slideway (104) on one side of the lower rail (102) near the locking plate (5) is bent downward to form a limiting part. Along the length direction of the limiting part, a number of limiting latches (10) are equidistantly arranged, and the limiting latches (10) are adapted to the locking holes (8) opened on the locking tongue (7).

3. The automobile seat slide rail limiting mechanism according to claim 1, characterized in that: A ball (11) is provided between the slideway (104) and the inner wall of the upper rail (101), and stoppers (12) are provided at both ends of the slideway (104).

4. The automobile seat slide rail limiting mechanism according to claim 2, characterized in that: One end of a fixed shaft (13) is provided at one end of the locking plate (5) near the adjustment handle (3). One end of the fixed shaft (13) is fixedly connected to the inner side of the locking plate (5), and the other end of the fixed shaft (13) passes through the adjustment handle (3) and is fixedly connected thereto.

5. The automobile seat slide rail limiting mechanism according to claim 4, characterized in that: A positioning block (14) is provided at one end of the locking plate (5) near the fixed shaft (13), and a positioning hole (15) adapted to the positioning block (14) is opened on the adjustment handle (3).

6. The automobile seat slide rail limiting mechanism according to claim 5, characterized in that: One end of the locking plate (5) near the fixed shaft (13) is bent toward the adjustment handle (3) to form a limiting groove (16), and the adjustment handle (3) is arranged in the limiting groove (16).

7. The automobile seat slide rail limiting mechanism according to claim 1, characterized in that: An outwardly protruding block (17) is provided at one end of the inner side of the upper rail (101) close to the locking plate (5), wherein the block (17) and the inner side of the upper rail (101) form a slot (18), and the slot (18) is engaged with the top end of the locking plate (5).

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