A sliding rail structure of an automobile seat

Abstract

This utility model relates to the field of automotive sliding rails, specifically to a sliding rail structure for an automotive seat, comprising: at least one lower sliding rail with a sliding rail groove on its surface; an upper sliding rail slidably connected to the sliding rail groove, the upper sliding rail having a cavity inside; the structure further comprising: a fixing plate fixed in the cavity, the fixing plate having through holes penetrating its upper and lower end faces. By configuring components such as the lower sliding rail, upper sliding rail, and locking mechanism, and by simultaneously locking and unlocking both sides of the dual sliding rails, the problems of asynchronous unlocking, potential single-point failure, and poor feel that exist in mainstream single-sided linkage rod solutions under extreme working conditions such as ultra-long sliding rails, high impact loads, and high precision requirements are solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive slide rails, and more particularly to a slide rail structure for an automotive seat. Background Technology

[0002] The sliding rail mechanism is an essential component of most car seats, enabling fore-and-aft adjustment and effectively improving the allocation and utilization of front and rear space inside the vehicle.

[0003] Currently, most mainstream automotive seat sliding rail locking mechanisms on the market adopt a single-sided control, linkage rod driven design. The typical working principle is as follows: the operating handle is located on one side of the sliding rail, and a rigid linkage rod running the entire length of the rail transmits the operating force to the locking pins on both sides of the rail. However, in ultra-long sliding rail scenarios, such as those in large SUVs and MPVs, the rail length often exceeds 600mm. The linkage rod length increases accordingly, but its rigidity is limited. When transmitting torque over long distances, elastic torsional deformation occurs, leading to a difference in the action delay of the locking mechanisms on both sides. This manifests as one side being unlocked while the other remains stuck, causing impact noise (a "clicking" sound) and adjustment sluggishness, severely reducing the smoothness of the feel. Furthermore, during vehicle bumps or emergency braking, the asymmetrical impact force exacerbates the deformation of the linkage rod, further amplifying the difference in unlocking displacement on both sides, and may even lead to momentary locking failure ("cannot lock") or abnormal wear. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a sliding rail structure for automobile seats to solve the technical problems in the prior art.

[0005] To achieve the above objectives, this utility model provides a slide rail structure for an automobile seat, comprising:

[0006] At least one lower slide rail, the surface of which is provided with a slide rail groove;

[0007] An upper slide rail is slidably connected to the slide rail groove, and a cavity is formed inside the upper slide rail;

[0008] The structure also includes:

[0009] A fixing plate fixed inside the cavity, the fixing plate having through holes penetrating its upper and lower end faces;

[0010] At least one locking component is slidably mounted on a fixed plate. A locking pin is fixed to the outside of the locking component. The locking pin is slidably connected to a pin hole provided on the upper slide rail. The side of the slide rail groove is provided with several positioning grooves whose centers are located on the same straight line, so that the position of the upper slide rail is fixed after the locking pin enters any one of the positioning grooves.

[0011] The movable rod and a first hinge rod with one end hinged to the locking member, the movable rod being slidably connected to the through hole, and the other end of the first hinge rod being hinged to the bottom end of the movable rod;

[0012] A first spring fitted onto the movable rod to drive it to return to its original position;

[0013] Unlocking handle used to drive the movable lever downward.

[0014] Preferably, the locking member has a rectangular structure, and the middle part of the locking member is slidably mounted on the surface of the fixing plate. Locking pins are fixedly installed at both ends of one side of the locking member, and one end of the locking pin extends into the corresponding positioning groove.

[0015] Preferably, one end of the locking pin is a wedge-shaped end, and the wedge-shaped end of the locking pin cooperates with the positioning groove.

[0016] Preferably, there are four first hinge rods, two first hinge rods are set as a group, and the two groups of first hinge rods are symmetrically hinged to the bottom of the movable rod. The other end of one group of first hinge rods is respectively hinged to the side walls of the corresponding locking parts at both ends.

[0017] Preferably, the inner wall of the upper slide rail is provided with a first slot and a second slot on both sides, and the second slot and the first slot are arranged opposite to each other on both sides of the adjacent positioning groove. One end of the locking pin passes through the first slot and the positioning groove in sequence and extends into the interior of the second slot.

[0018] Preferably, the two ends of the unlocking handle are rotatably mounted on the adjacent upper slide rails, and pressure plates are fixedly mounted on both ends of the unlocking handle, with the bottom of the pressure plates resting on the top of the adjacent movable rods.

[0019] Preferably, both ends of the upper slide rail are fixedly connected to limit plates, and the middle of the lower slide rail is provided with a buffer component that cooperates with the limit plates.

[0020] The buffer assembly includes: a connecting plate fixedly installed in the middle of the bottom of the sliding rail; buffer components are symmetrically slidably installed at both ends of the connecting plate; a second hinge rod is hinged to one side of the buffer component; an impact rod is movably passed through the middle of the connecting plate; one end of the second hinge rod is hinged to the surface of one end of the impact rod; a second spring is fitted at both ends of the impact rod; and the two ends of the second spring are respectively fixed between the surface of the connecting plate and the surface of one end of the impact rod.

[0021] Preferably, the buffer is a fiberglass nylon block, and an anti-slip groove is provided on the side near the upper slide rail.

[0022] The beneficial effects of this utility model are as follows: The slide rail structure of the car seat of this utility model, through the setting of components such as the lower slide rail, the upper slide rail and the locking mechanism, and the synchronous locking and unlocking control of both sides of the double slide rail, solves the problems of asynchronous unlocking, potential single point failure and poor feel of the mainstream single-side linkage rod solution under extreme working conditions such as ultra-long slide rail, high impact load and high precision requirements.

[0023] By incorporating components such as the lower slide rail, upper slide rail, and buffer assembly, the upper slide rail decelerates when it slides rapidly from one end to the middle of the lower slide rail, thus slowing its movement and further absorbing energy and extending the impact time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the present utility model;

[0026] Figure 2 This is an exploded schematic diagram of the lower slide rail and upper slide rail of this utility model;

[0027] Figure 3 This is a partial structural main cross-sectional view of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the locking mechanism and other components of this utility model;

[0030] Figure 6 This is a schematic diagram of the left sectional view of a partial structure of this utility model;

[0031] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0032] The diagram is marked as follows:

[0033] 1. Lower slide rail; 101. Slide rail groove; 102. Positioning groove; 2. Upper slide rail; 201. Cavity; 202. First slot; 203. Second slot; 301. Fixing plate; 3011. Through hole; 302. Locking component; 303. Locking pin; 304. First hinge rod; 305. Movable rod; 306. First spring; 4. Unlocking handle; 401. Pressure plate; 5. Buffer assembly; 501. Connecting plate; 502. Buffer component; 503. Second hinge rod; 504. Impact rod; 505. Second spring; 6. Limiting plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0035] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] The first aspect of this utility model proposes a slide rail structure for an automobile seat, such as... Figure 1-7 As shown, it includes:

[0037] At least one lower slide rail 1, the surface of which is provided with a slide rail groove 101;

[0038] The upper slide rail 2 is slidably connected to the slide rail groove 101, and a cavity 201 is formed inside the upper slide rail 2; it should be added that the two ends of the lower slide rail 1 are fixed to the vehicle floor plate by bolts, while the two ends of the upper slide rail 2 are fixed to the bottom of the seat by bolts.

[0039] The structure also includes:

[0040] A fixing plate 301 is fixed inside the cavity 201, and the fixing plate 301 is provided with through holes 3011 penetrating its upper and lower end faces;

[0041] At least one locking member 302 is slidably mounted on the fixed plate 301. A locking pin 303 is fixed on the outer side of the locking member 302. The locking pin 303 is slidably connected to the pin hole provided on the upper slide rail 2. The side of the slide rail groove 101 is provided with a plurality of positioning grooves 102 with their centers on the same straight line, so that the position of the upper slide rail 2 is fixed after the locking pin 303 enters any one of the positioning grooves 102.

[0042] The movable rod 305 and the first hinge rod 304, one end of which is hinged to the locking member 302, are slidably connected to the through hole 3011. The other end of the first hinge rod 304 is hinged to the bottom end of the movable rod 305.

[0043] A first spring 306 is fitted onto the movable rod 305 to drive it to return to its original position; it should be noted that the two ends of the first spring 306 are respectively fixedly installed between the top wall of the movable rod 305 and the top of the fixed plate 301.

[0044] Unlocking handle 4 for driving the movable lever 305 downward.

[0045] When the car seat position needs to be adjusted, the unlocking handle 4 is pulled upwards, causing it to rotate upwards around the axis of rotation with respect to the upper slide rail 2. The pressure plates 401 at both ends of the unlocking handle 4 press down on the corresponding movable rod 305 in the upper slide rail 2, causing the first spring 306 to compress and contract. At this time, the bottom of the movable rod 305 drives the hinged first hinge rod 304 to deflect, causing the two hinged first hinge rods 304 on the same side to pull the corresponding locking member 302 closer together. After the movable rod 305 has descended to its final position, the locking pin 303 moves out of the positioning groove 102, allowing the seat position to be adjusted. After the adjustment is completed... When the lever on the unlocking handle 4 is released, the first spring 306 returns to its elastic state, pushing the movable rod 305 upward. This causes the first hinge rod 304, which is hinged at the bottom of the movable rod 305, to deflect and return to its original position. The first hinge rod 304 on the same side drives the corresponding locking part 302 to move in the opposite direction, so that the locking pin 303 is inserted into the corresponding positioning groove 102 again, thus locking the seat position. Furthermore, by controlling the locking and unlocking simultaneously on both sides of the dual slide rails, the problems of asynchronous unlocking, potential single-point failure, and poor feel that exist in mainstream single-side linkage rod solutions under extreme working conditions such as ultra-long slide rails, high impact loads, and high precision requirements are solved.

[0046] In this embodiment, the locking member 302 has a rectangular structure, and its middle part is slidably mounted on the surface of the fixing plate 301. Locking pins 303 are fixedly mounted at both ends of one side of the locking member 302, with one end of each locking pin 303 extending into a corresponding positioning groove 102. It should be noted that the fixing plate 301 has sliding grooves at both its upper and lower ends, and the upper and lower ends of the inner wall of the locking member 302 are fixed with sliders that cooperate with the sliding grooves. This further improves the stability of the locking member 302's movement, and the two locking pins 303 on the same side further enhance the stability of the locking position.

[0047] In this embodiment, one end of the locking pin 303 is a wedge-shaped end, and the wedge-shaped end of the locking pin 303 cooperates with the positioning groove 102.

[0048] When the locking pin 303 is inserted into the corresponding positioning groove 102, the wedge end can guide the locking pin 303 smoothly into the predetermined position during position locking, which reduces the requirement for precise alignment.

[0049] In this embodiment: four first hinge rods 304 are provided, two first hinge rods 304 are set as a group, and the two groups of first hinge rods 304 are symmetrically hinged to the bottom end of the movable rod 305. The other end of one group of first hinge rods 304 is respectively hinged to the side walls of the corresponding locking member 302 at both ends.

[0050] By hingedly installing first hinge rods 304 at both ends of the locking member 302, the stability of the movement of the locking member 302 is further improved when the first hinge rods 304 push or pull the locking member 302 to move on the surface of the fixed plate 301.

[0051] In this embodiment: a first slot 202 and a second slot 203 are provided on both sides of the inner wall of the upper slide rail 2, and the second slot 203 and the first slot 202 are arranged opposite to each other on both sides of the adjacent positioning groove 102. One end of the locking pin 303 passes through the first slot 202 and the positioning groove 102 in sequence and extends into the interior of the second slot 203.

[0052] In the process of locking the upper slide rail 2 and the lower slide rail 1 with the locking pin 303, the stability of the locking state can be further improved by inserting the two ends of the locking pin 303 into the first slot 202 and the second slot 203 on both sides of the positioning groove 102 respectively.

[0053] In this embodiment: the two ends of the unlocking handle 4 are respectively rotatably mounted on the adjacent upper slide rail 2, and pressure plates 401 are fixedly mounted on both ends of the unlocking handle 4, and the bottom of the pressure plates 401 rests on the top of the adjacent movable rod 305.

[0054] When the unlocking handle 4 is flipped around the axis of rotation with the upper slide rail 2, the pressure plates 401 at both ends of the unlocking handle 4 press down the corresponding movable rods 305, thereby releasing the locking state between the lower slide rail 1 and the upper slide rail 2.

[0055] In this embodiment: both ends of the upper slide rail 2 are fixedly connected to limit plates 6, and the middle of the lower slide rail 1 is provided with a buffer assembly 5 that cooperates with the limit plates 6.

[0056] The buffer assembly 5 includes: a connecting plate 501 fixedly installed in the middle of the bottom of the lower slide rail 1; buffer members 502 are symmetrically slidably installed at both ends of the connecting plate 501; a second hinge rod 503 is hingedly installed on one side of the buffer member 502; an impact rod 504 is movably passed through the middle of the connecting plate 501; one end of the second hinge rod 503 is hingedly installed on the surface of one end of the impact rod 504; a second spring 505 is fitted on both ends of the impact rod 504; and the two ends of the second spring 505 are respectively fixedly installed between the surface of the connecting plate 501 and the surface of one end of the impact rod 504.

[0057] When the upper slide rail 2 slides rapidly inside the lower slide rail 1, in order to prevent the upper slide rail 2 from being slightly deformed due to excessive impact during sliding, which would cause problems such as increased and uneven sliding resistance, when one end of the upper slide rail 2 is about to slide to the middle position of the lower slide rail 1, the limiting plate 6 fixed at the end of the upper slide rail 2 presses against the surface of one end of the impact rod 504, causing the impact rod 504 to move closer to the connecting plate 501. At this time, the second hinge rod 503, which is symmetrically hinged at the pushing end of the impact rod 504, deflects, causing the second hinge rod 503 to push the hinged buffer 502 to slide on the surface of the connecting plate 501. At this time, the buffer 502 moves closer to the inner wall of the upper slide rail 2 and contacts the upper slide rail 2, which slows down the upper slide rail 2. At the same time, the second spring 505 is compressed and contracted by the movement of the impact rod 504 to slow down the movement speed of the upper slide rail 2, and further absorbs energy and prolongs the impact time.

[0058] In this embodiment: the buffer 502 is a glass fiber nylon block, and an anti-slip groove is provided on the side near the upper slide rail 2.

[0059] With the anti-slip grooves on the surface of the fiberglass nylon block, when the upper slide rail 2 is sliding rapidly on the lower slide rail 1 and is about to move into place, the buffer 502 can contact the upper slide rail 2, quickly reducing the moving speed of the upper slide rail 2. The buffer 502 can play the roles of physical blocking, energy absorption, and extending the impact time.

[0060] Working principle: When the car seat position needs to be adjusted, the unlocking handle 4 is moved relative to the upper slide rail 2, causing it to rotate upwards. The pressure plates 401 at both ends of the unlocking handle 4 press down the corresponding movable rod 305, causing the first spring 306 to compress and contract. At this time, the first hinge rod 304 hinged on the movable rod 305 deflects, causing the two first hinge rods 304 hinged on the same side to pull the corresponding locking parts 302 closer together. After the movable rod 305 has descended to its final position, the locking pin 3... 03 is moved out of the positioning groove 102, and the seat position can be adjusted. After the adjustment is completed, the lever 4 is released. At this time, the first spring 306 is elastically reset, pushing the movable rod 305 to rise. The movable rod 305 drives the first hinge rod 304 at the bottom to deflect and reset in the opposite direction. The first hinge rod 304 on the same side drives the corresponding locking part 302 to move in the opposite direction, so that the locking pin 303 is inserted into the corresponding positioning groove 102 again, and the seat position is locked.

[0061] As the upper slide rail 2 slides rapidly on the lower slide rail 1, when one end of the upper slide rail 2 is about to slide to the middle position of the lower slide rail 1, the limiting plate 6 fixed at the end of the upper slide rail 2 presses against the surface of one end of the impact rod 504, causing the impact rod 504 to move closer to the connecting plate 501. At this time, the second hinge rod 503, which is symmetrically hinged at the pushing end of the impact rod 504, deflects, causing the second hinge rod 503 to push the hinged buffer 502 to slide on the surface of the connecting plate 501. At this time, the buffer 502 moves closer to the inner wall of the upper slide rail 2 and contacts the upper slide rail 2, thus slowing down the upper slide rail 2. At the same time, the second spring 505 is compressed and contracted by the movement of the impact rod 504, which is used to slow down the movement speed of the upper slide rail 2.

[0062] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0063] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A slide rail structure for a car seat, comprising: At least one sliding rail (1) has a sliding rail groove (101) on its surface. The upper slide rail (2) is slidably connected to the slide rail groove (101), and the upper slide rail (2) has a cavity (201) formed inside. The structure is characterized in that it further includes: A fixing plate (301) is fixed in the cavity (201), and the fixing plate (301) is provided with through holes (3011) penetrating its upper and lower end faces. At least one locking member (302) is slidably mounted on the fixed plate (301). A locking pin (303) is fixed on the outside of the locking member (302). The locking pin (303) is slidably connected to a pin hole provided on the upper slide rail (2). The side of the slide rail groove (101) is provided with a plurality of positioning grooves (102) with their centers on the same straight line, so that the position of the upper slide rail (2) is fixed after the locking pin (303) enters any one of the positioning grooves (102). The movable rod (305) and the first hinge rod (304) with one end hinged to the locking member (302), the movable rod (305) being slidably connected to the through hole (3011), and the other end of the first hinge rod (304) being hinged to the bottom end of the movable rod (305); A first spring (306) is fitted onto the movable rod (305) to drive it to return to its original position. Unlocking handle (4) for driving the movable lever (305) downward.

2. The slide rail structure for an automobile seat according to claim 1, characterized in that, The locking member (302) has a rectangular structure, and the middle part of the locking member (302) is slidably mounted on the surface of the fixing plate (301). Both ends of one side of the locking member (302) are fixedly mounted with locking pins (303), and one end of the locking pins (303) extends into the corresponding positioning groove (102).

3. The slide rail structure for an automobile seat according to claim 2, characterized in that, One end of the locking pin (303) is wedge-shaped, and the wedge-shaped end of the locking pin (303) cooperates with the positioning groove (102).

4. The slide rail structure for an automobile seat according to claim 1, characterized in that, There are four first hinge rods (304), two first hinge rods (304) are set as a group, and the two groups of first hinge rods (304) are symmetrically hinged to the bottom end of the movable rod (305). The other end of one group of first hinge rods (304) is respectively hinged to the side walls of the corresponding locking parts (302).

5. The slide rail structure for an automobile seat according to claim 2, characterized in that, The upper slide rail (2) has a first slot (202) and a second slot (203) on both sides of its inner wall. The second slot (203) and the first slot (202) are arranged opposite to each other on both sides of the adjacent positioning groove (102). One end of the locking pin (303) passes through the first slot (202) and the positioning groove (102) in sequence and extends into the second slot (203).

6. The slide rail structure for an automobile seat according to claim 1, characterized in that, The two ends of the unlocking handle (4) are respectively rotatably mounted on the adjacent upper slide rail (2), and pressure plates (401) are fixedly mounted on both ends of the unlocking handle (4), with the bottom of the pressure plate (401) resting on the top of the adjacent movable rod (305).

7. The slide rail structure for an automobile seat according to claim 1, characterized in that, Both ends of the upper slide rail (2) are fixedly connected to the limiting plate (6), and the middle of the lower slide rail (1) is provided with a buffer component (5) that cooperates with the limiting plate (6). The buffer assembly (5) includes: a connecting plate (501) fixedly installed in the middle position of the bottom of the sliding rail (1), buffer members (502) symmetrically slidably installed at both ends of the connecting plate (501), and a second hinge rod (503) hingedly installed on one side of the buffer member (502), an impact rod (504) movably passing through the middle of the connecting plate (501), one end of the second hinge rod (503) hingedly installed on the surface of one end of the impact rod (504), and a second spring (505) fitted at both ends of the impact rod (504), and the two ends of the second spring (505) respectively fixedly installed between the surface of the connecting plate (501) and the surface of one end of the impact rod (504).

8. The slide rail structure for an automobile seat according to claim 7, characterized in that, The buffer (502) is a fiberglass nylon block, and an anti-slip groove is provided on the side near the upper slide rail (2).

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