Matching structure of speed reducer and upper sliding rail of automobile seat sliding rail

Abstract

The invention discloses a matching structure of a speed reducer and an upper sliding rail of an automobile seat sliding rail, and belongs to the technical field of automobile seat accessories. The automobile seat sliding rail comprises a lower sliding rail body. The upper sliding rail and the lower sliding rail form a sliding pair; the screw rod is fixed in the lower sliding rail cavity; the matching structure of the speed reducer and the upper sliding rail comprises a worm and gear reduction gearbox, and is characterized in that a worm and gear reduction gearbox left reinforcing clamping plate and a worm and gear reduction gearbox right reinforcing clamping plate are sleeved on a screw rod in an empty manner; the upper portions of the left reinforcing clamping plate and the right reinforcing clamping plate of the worm and gear reduction box are matched with the upper sliding rail in a mortise and tenon mode at the positions corresponding to the worm and gear reduction box matching cavity, and the front sides and the rear sides of the lower portions of the left reinforcing clamping plate and the right reinforcing clamping plate of the worm and gear reduction box are matched with the upper sliding rail front wall body and the upper sliding rail rear wall body of the upper sliding rail in a mortise and tenon mode respectively. The device has the advantages that the structure is simplified, and convenience and high efficiency of installation are embodied; potential weak factors in a transmission chain are eliminated; the assembly reliability can be guaranteed, and the risk of component loosening caused in a vibration environment is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile seat accessories, and particularly relates to a cooperation structure of a deceleration device of an automobile seat slide rail and an upper slide rail. BACKGROUND

[0002] The most core function of the automobile seat slide rail is position adjustment, which enables the automobile seat to move forward and backward to adapt to different heights and different body shapes of the driver and passenger to find a relatively comfortable and safe riding posture. Reliable locking is to lock the seat reliably at the position after adjustment to ensure that the seat does not move accidentally during vehicle driving, acceleration, braking or collision to ensure safety. The basic action principle of the automobile seat slide rail is that it can be summarized as a sliding-locking cycle process, and the core lies in the interaction of two pairs of components. In the structure system of the core components, there are an upper slide rail (also called "moving slide rail") and a lower slide rail (also called "fixed slide rail" or "static slide rail"). The former is fixed with the automobile seat framework and moves with the seat, and more specifically, the automobile seat is moved forward or backward by the upper slide rail. The latter is usually fixed on the vehicle floor and remains stationary. In the adjustment stage (unlocking and driving), for example, the user presses the button, and the motor is started to move the worm gear reducer along the screw rod arranged in the lower slide rail cavity. Since the worm gear reducer is connected with the upper slide rail (i.e., since the upper slide rail is connected with the worm gear reducer), when the worm gear reducer moves along the screw rod, it drives the upper slide rail and the automobile seat to move correspondingly. For example, in the manual mode, the user releases the operating lever (also called "handle"), and the locking mechanism is reset under the action of the spring force to make the teeth / claws re-embed in the holes / slits of the lower slide rail, thereby achieving mechanical hard locking. Since the electric slide rail has the reverse self-locking feature (i.e., the worm can drive the worm gear, but the worm gear cannot drive the worm in reverse) when the motor stops working, this feature will naturally lock the entire transmission system to prevent the seat from moving abnormally under stress.

[0003] Since the electric motor plus worm gear box structure has the advantages of convenient and labor-saving operation, precise control, easy integration, reverse self-locking, relatively compact structure and good layout, etc., the electric automobile seat slide rail occupies an absolute dominant position in the market.

[0004] The cooperation structure of the above-mentioned deceleration device and the upper slide rail, i.e., the connection mode of the deceleration device and the upper slide rail, is not uncommon in the disclosed Chinese patent documents. A representative example is the "middle horizontal drive type automobile seat slide rail device" recommended in CN118163683A. The deceleration device of this patent comprises a worm gear deceleration box. The worm gear deceleration box is supported on a positioning connector in a transmission cooperation state with a screw body arranged in the lower slide rail cavity of the lower slide rail (patent referred to as "fixed guide rail"). The shape of the positioning connector is generally The positioning connector locking plates are folded outward at the upper part of both sides, and the middle part of both sides is sleeved on the screw body. In order to connect the positioning connector with the worm gear deceleration box and the upper slide rail, a cover plate is added. The cover plate corresponds to the upper part of the upper slide rail and is fixed to the positioning connector locking plates of the aforementioned positioning connector by screws as fasteners. The upper part of the worm gear deceleration box is inserted into the sliding guide rail upper mounting plate accommodation groove (essentially "worm gear box upper part insertion hole") of the sliding guide rail (patent referred to as "sliding guide rail") pre-provided on the upper slide rail. The cooperation structure of the deceleration device and the upper slide rail of this patent has the following technical problems: First, the structure is complex and the installation is cumbersome due to the need for a positioning connector in the shape of a The bending and torsional stiffness of the positioning connector in the shape of a Summary

[0005] The task of the present application is to provide a cooperation structure of a deceleration device and an upper slide rail of an automobile seat slide rail that helps to reduce the number of components, simplify the structure, facilitate convenient installation, significantly improve the bending and torsional stiffness, eliminate potential weak links in the transmission chain, eliminate fasteners, and ensure the reliability of assembly to avoid the risk of component loosening in a vibrating environment.

[0006] The task of the present application is accomplished in such a way that a deceleration device and a cooperating structure of an upper slide rail of an automobile seat slide rail, said automobile seat slide rail comprising a lower slide rail; an upper slide rail, which is arranged in a lower slide rail cavity of the lower slide rail and forms a sliding pair with the lower slide rail; a screw rod, which is fixed in said lower slide rail cavity at a position corresponding to the lower side of an upper slide rail cavity of the upper slide rail; said deceleration device and the cooperating structure of the upper slide rail comprising a worm gear deceleration box, which is threadedly engaged with said screw rod and the upper part of which is inserted into a worm gear deceleration box cooperating cavity formed in the top wall of the upper slide rail, characterized in that a worm gear deceleration box left reinforcing clamping plate is sleeved on said screw rod and abuts against the left side of the worm gear deceleration box, and a worm gear deceleration box right reinforcing clamping plate is sleeved on said screw rod and abuts against the right side of the worm gear deceleration box, the upper parts of the worm gear deceleration box left and right reinforcing clamping plates are in position corresponding to said worm gear deceleration box cooperating cavity and are in a state of clamping the worm gear deceleration box, and the upper parts of the worm gear deceleration box left and right reinforcing clamping plates are in a state of clamping the worm gear deceleration box, and the front and rear sides of the lower parts of the worm gear deceleration box left and right reinforcing clamping plates are in a state of clamping the worm gear deceleration box.

[0007] In a specific embodiment of the present application, a left clamping cavity extends at the central position of the left end of the upper cavity opening of said worm gear deceleration box cooperating cavity, and a right clamping cavity extends at the central position of the right end of the upper cavity opening of the worm gear deceleration box cooperating cavity; a worm gear deceleration box left reinforcing clamping plate clamping leg hole is formed in the upper slide rail front wall and the upper slide rail rear wall respectively at positions corresponding to the front lower side and the rear lower side of the left clamping cavity, and a worm gear deceleration box right reinforcing clamping plate clamping leg hole is also formed in the upper slide rail front wall and the upper slide rail rear wall respectively at positions corresponding to the front lower side and the rear lower side of the right clamping cavity; the upper end of said worm gear deceleration box left reinforcing clamping plate is in a state of clamping the worm gear deceleration box cooperating cavity, and the front and rear sides of the lower end of the worm gear deceleration box left reinforcing clamping plate are in a state of clamping the worm gear deceleration box left reinforcing clamping plate clamping leg hole, and the upper end of said worm gear deceleration box right reinforcing clamping plate is in a state of clamping the worm gear deceleration box cooperating cavity, and the front and rear sides of the lower end of the worm gear deceleration box right reinforcing clamping plate are in a state of clamping the worm gear deceleration box right reinforcing clamping plate clamping leg hole.

[0008] In another specific embodiment of the present application, a left reinforcing clamping plate screw hole is formed in the middle of the height direction of the left reinforcing clamping plate of the worm gear deceleration box, which is sleeved on the screw rod, a left reinforcing clamping plate tenon is formed at the upper end of the left reinforcing clamping plate of the worm gear deceleration box, and a left reinforcing clamping plate clamping leg is formed at the front side and the rear side of the lower end, respectively, which protrudes outward, the left reinforcing clamping plate tenon is matched with the left clamping cavity tenon, and the left reinforcing clamping plate clamping leg is matched with the left reinforcing clamping plate clamping leg hole; a right reinforcing clamping plate screw hole is formed in the middle of the height direction of the right reinforcing clamping plate of the worm gear deceleration box, which is sleeved on the screw rod, a right reinforcing clamping plate tenon is formed at the upper end of the right reinforcing clamping plate of the worm gear deceleration box, and a right reinforcing clamping plate clamping leg is formed at the front side and the rear side of the lower end, respectively, which protrudes outward, the right reinforcing clamping plate tenon is matched with the right clamping cavity tenon, and the right reinforcing clamping plate clamping leg is matched with the right reinforcing clamping plate clamping leg hole.

[0009] In another specific embodiment of the present application, the left reinforcing clamping plate and the right reinforcing clamping plate of the worm gear deceleration box are each in the shape of a Chinese character in a double-convex form stacked from bottom to top.

[0010] In another specific embodiment of the present application, the lower slide rail is fixed to the vehicle floor by fasteners in the use state, and a lower slide rail front inner folding edge in the shape of an n-shaped cross section is formed at the front upper portion of the length direction of the lower slide rail by folding outward toward the direction of the lower slide rail cavity, and a lower slide rail rear inner folding edge in the shape of an n-shaped cross section is also formed at the rear upper portion of the length direction of the lower slide rail by folding outward toward the direction of the lower slide rail cavity; an upper slide rail front outer folding edge in the shape of a U-shaped cross section is formed at the front lower portion of the length direction of the upper slide rail by folding outward, and an upper slide rail rear outer folding edge in the shape of a U-shaped cross section is also formed at the rear lower portion of the length direction of the upper slide rail by folding outward, the upper slide rail front outer folding edge and the lower slide rail front inner folding edge are matched with each other, and a front slide rail anti-backlash device is arranged in the space between the outer wall of the upper slide rail front outer folding edge and the inner wall of the lower slide rail front inner folding edge, the upper slide rail rear outer folding edge and the lower slide rail rear inner folding edge are matched with each other, and a rear slide rail anti-backlash device is arranged in the space between the outer wall of the upper slide rail rear outer folding edge and the inner wall of the lower slide rail rear inner folding edge, and the upper slide rail and the lower slide rail form a sliding pair through the front and rear slide rail anti-backlash devices.

[0011] In still another specific embodiment of the present application, a screw thread seat is provided at the left end of the screw rod, which is fixed to the left end of the lower slide rail in the lower slide rail cavity by a screw thread seat fixing screw, a screw rod fixing seat is provided at the right end of the screw rod, which is fixed to the right end of the lower slide rail in the lower slide rail cavity by a screw rod fixing seat screw, and a screw rod locking nut is provided at the end of the screw rod protruding from the right side of the screw rod fixing seat.

[0012] In still another specific embodiment of the present application, a chair seat framework fixing stud is fixed to the top wall of the upper slide rail at the left end and the right end, which is fixedly connected with the seat framework of the automobile seat in the use state; a motor rack fixing hole is formed in the top wall of the upper slide rail at the left side and the right side corresponding to the worm gear and worm reduction gearbox fitting cavity.

[0013] In still another specific embodiment of the present application, the upper part of the worm gear and worm reduction gearbox protrudes from the top wall of the upper slide rail in the state of being tightly fitted with the worm gear and worm reduction gearbox fitting cavity; the left and right reinforcing clamping plates of the worm gear and worm reduction gearbox protrude from the top wall of the upper slide rail in the state of being fitted with the left and right clamping cavity mortise and tenon joints.

[0014] In still another specific embodiment of the present application, the front rail gap elimination device includes a front ball cage and front balls, a group of front balls are arranged at the upper and lower parts of the left end and the right end of the front ball cage, and the front ball cage and the front balls are arranged in the space between the outer wall of the front outer folding edge of the upper slide rail and the inner wall of the front inner folding edge of the lower slide rail; the front rail gap elimination device includes a rear ball cage and rear balls, a group of rear balls are arranged at the upper and lower parts of the left end and the right end of the rear ball cage, and the rear ball cage and the rear balls are arranged in the space between the outer wall of the rear outer folding edge of the upper slide rail and the inner wall of the rear inner folding edge of the lower slide rail.

[0015] The technical solution provided by the present application has the advantages that the left and right reinforcing clamping plates of the worm gear and worm reduction gearbox are fitted with the upper slide rail in the state of clamping the worm gear and worm reduction gearbox, and the upper part of the worm gear and worm reduction gearbox is tightly fitted with the worm gear and worm reduction gearbox fitting cavity, thereby significantly reducing the number of parts, simplifying the structure, and facilitating convenient and efficient installation; the bending and torsional stiffness of the left and right reinforcing clamping plates of the worm gear and worm reduction gearbox is maximized, and the stiffness of the upper slide rail is also improved, eliminating potential weak factors in the transmission chain; since the screw or other components as fasteners do not need to be installed on the left and right reinforcing clamping plates of the worm gear and worm reduction gearbox, the reliability of the assembly is guaranteed, and the risk of component loosening in a vibrating environment is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Assembled structure diagram of the present application; Figure 2 Assembled structure diagram of the present application; Figure 1 Assembled structure diagram of the present application; Figure 3 Assembled structure diagram of the present application; Figure 2 Assembled structure diagram of the present application. In the figure: 1. Lower slide rail, 11. Lower slide rail cavity, 12. Lower slide rail front inner flange, 13. Lower slide rail rear inner flange; 2. Upper slide rail, 21. Upper slide rail cavity, 211. Worm gear and worm reduction box matching cavity, 2111. Left card cavity, 2112. Right card cavity, 212. Worm gear and worm reduction box left reinforcing card joint plate card foot hole, 213. Worm gear and worm reduction box right reinforcing card joint plate card foot hole, 23. Upper slide rail front outer flange, 24. Upper slide rail rear outer flange, 25. Chair seat framework fixing stud, 26. Motor frame fixing hole; 3. Screw rod, 31. Screw rod threaded seat, 311. Screw rod threaded seat fixing screw, 32. Screw rod fixing seat, 321. Screw rod fixing seat screw, 33. Screw rod locking nut; 4. Worm gear and worm reduction box, 41. Worm connecting hole; 5. Worm gear and worm reduction box left reinforcing card joint plate, 51. Left reinforcing card joint plate screw empty sleeve hole, 52. Worm gear and worm reduction box left reinforcing card joint plate tenon, 53. Worm gear and worm reduction box left reinforcing card joint plate card foot; 6. Worm gear and worm reduction box right reinforcing card joint plate, 61. Right reinforcing card joint plate screw empty sleeve hole, 62. Worm gear and worm reduction box right reinforcing card joint plate tenon, 63. Worm gear and worm reduction box right reinforcing card joint plate card foot; 7. Slide rail front anti-backlash device, 71. Front ball bearing, 72. Front ball; 8. Slide rail rear anti-backlash device, 81. Rear ball bearing, 82. Rear ball. DETAILED DESCRIPTION

[0017] In order to enable persons skilled in the art to more clearly understand the technical essence and beneficial effects of the present application, the applicant will make a detailed description in the form of examples below, but the description of the examples is not a limitation on the present application scheme, and any equivalent transformation only in form but not in substance made according to the concept of the present application should be regarded as the technical scheme scope of the present application.

[0018] In the following description, any directional or positional concept such as up, down, left, right, front and back is taken as an example of the current Figure 1 position state, and therefore should not be understood as a special limitation on the technical scheme provided by the present application.

[0019] Please refer to Figure 1 and Figure 2, a lower slide rail 1 of a structure system of a car seat slide rail; an upper slide rail 2 arranged in a lower slide rail cavity 11 of the lower slide rail 1 and forming a sliding pair with the lower slide rail 1; a screw rod 3 fixed in the aforementioned lower slide rail cavity 11 at a position below a upper slide rail cavity 21 corresponding to the upper slide rail 2; a worm and gear deceleration box 4 showing a structure system of a cooperation structure of a deceleration device and an upper slide rail, the worm and gear deceleration box 4 threadedly cooperating with the aforementioned screw rod 3 and an upper part of the worm and gear deceleration box 4 penetrating into a worm and gear deceleration box cooperation cavity 211 formed on a top wall of the upper slide rail 2.

[0020] The technical points of the technical solutions provided by the present application are that a worm and gear deceleration box left reinforcing clamping plate 5 is sleeved on the aforementioned screw rod 3 and abuts against a left side of the worm and gear deceleration box 4, and a worm and gear deceleration box right reinforcing clamping plate 6 is sleeved on the screw rod 3 and abuts against a right side of the worm and gear deceleration box 4, upper parts of the worm and gear deceleration box left and right reinforcing clamping plates 5, 6 are in a position corresponding to the aforementioned worm and gear deceleration box cooperation cavity 211 and are in a state of clamping the worm and gear deceleration box 4 and are in a state of tenon-and-mortise cooperation with the aforementioned upper slide rail 2, and lower front sides and rear sides of the worm and gear deceleration box left and right reinforcing clamping plates 5, 6 are in tenon-and-mortise cooperation with an upper slide rail front wall body and an upper slide rail rear wall body of the upper slide rail 2.

[0021] The aforementioned sleeving concept refers to that the worm and gear deceleration box left and right reinforcing clamping plates 5, 6 do not contact the screw rod 3.

[0022] Please see Figure 1 , a left clamping cavity 2111 extends at a central position of a left end of an upper cavity opening of the aforementioned worm and gear deceleration box cooperation cavity 211, and a right clamping cavity 2112 extends at a central position of a right end of the upper cavity opening of the worm and gear deceleration box cooperation cavity 211; a worm and gear deceleration box left reinforcing clamping plate clamping leg hole 212 that penetrates the upper slide rail front wall body and the upper slide rail rear wall body is formed on the aforementioned upper slide rail 2 upper slide rail front wall body and upper slide rail rear wall body and is in a position corresponding to a front lower side and a rear lower side of the left clamping cavity 2111 respectively, and a worm and gear deceleration box right reinforcing clamping plate clamping leg hole 213 that also penetrates the upper slide rail front wall body and the upper slide rail rear wall body is formed in a position corresponding to a front lower side and a rear lower side of the right clamping cavity 2112 respectively; the upper end of the aforementioned worm and gear deceleration box left reinforcing clamping plate 5 is in tenon-and-mortise cooperation with the aforementioned left clamping cavity 2111, and the front side and the rear side of the lower end are in tenon-and-mortise cooperation with the aforementioned worm and gear deceleration box left reinforcing clamping plate clamping leg hole 212, and the upper end of the aforementioned worm and gear deceleration box right reinforcing clamping plate 6 is in tenon-and-mortise cooperation with the aforementioned right clamping cavity 2112, and the front side and the rear side of the lower end are in tenon-and-mortise cooperation with the aforementioned worm and gear deceleration box right reinforcing clamping plate clamping leg hole 213.

[0023] A left reinforcing clamping plate screw sleeve hole 51 is formed in the height direction of the worm gear speed reducer left reinforcing clamping plate 5, which is sleeved on the screw 3. A worm gear speed reducer left reinforcing clamping plate tenon 52 is formed at the upper end of the worm gear speed reducer left reinforcing clamping plate 5, and a worm gear speed reducer left reinforcing clamping plate clamping leg 53 is formed at the front side and the rear side of the lower end. The worm gear speed reducer left reinforcing clamping plate tenon 52 is matched with the left clamping cavity 2111, and the worm gear speed reducer left reinforcing clamping plate clamping leg 53 is matched with the worm gear speed reducer left reinforcing clamping plate clamping leg hole 212. A right reinforcing clamping plate screw sleeve hole 61 is formed in the height direction of the worm gear speed reducer right reinforcing clamping plate 6, which is sleeved on the screw 3. A worm gear speed reducer right reinforcing clamping plate tenon 62 is formed at the upper end of the worm gear speed reducer right reinforcing clamping plate 6, and a worm gear speed reducer right reinforcing clamping plate clamping leg 63 is formed at the front side and the rear side of the lower end. The worm gear speed reducer right reinforcing clamping plate tenon 62 is matched with the right clamping cavity 2112, and the worm gear speed reducer right reinforcing clamping plate clamping leg 63 is matched with the worm gear speed reducer right reinforcing clamping plate clamping leg hole 213.

[0024] As shown in the schematic diagram, Figure 2 As a preferred solution, in order to fully guarantee the secure fixing effect of the worm gear speed reducer left and right reinforcing clamping plate tenons 52 and 62 at the left and right clamping cavities 2111 and 2112 of the upper slide rail 2, welding can be used for reinforcement.

[0025] As shown in the schematic diagram, Figure 1 As shown in the schematic diagram, Figure 2 Since the left and right clamping cavities 2111 and 2112 are respectively communicated with the worm gear speed reducer matching cavity 211, the shape of the left clamping cavity 2111 is generally [L-shaped], and the shape of the right clamping cavity 2112 is generally [L-shaped], so as to reliably match the worm gear speed reducer left and right reinforcing clamping plate tenons 52 and 62. The upper part of the worm gear speed reducer 4 is matched with the worm gear speed reducer matching cavity 211 (also known as “tightly fitted”). In addition, it can be determined without doubt that the shape and size of the worm gear speed reducer left and right reinforcing clamping plate clamping leg holes 212 and 213 are respectively matched with the worm gear speed reducer left and right reinforcing clamping plate clamping legs 53 and 63.

[0026] As shown in the schematic diagram, Figure 1As shown, the aforementioned left and right worm gear reducer reinforcing clamping plates 5, 6 are each in a double-convex Chinese character shape stacked from bottom to top. The specific meaning of the double-convex Chinese character shape is that the left and right worm gear reducer reinforcing clamping plates 5, 6 each have two pairs of shoulders (also referred to as “two pairs of steps”) from top to bottom.

[0027] As shown in Figure 3 and in combination with Figure 1 and Figure 2 , the aforementioned lower slide rail 1 is fixed to the vehicle floor by fasteners in the use state, and the upper portion of the front side in the length direction of the lower slide rail 1 is folded and expanded in the direction of the aforementioned lower slide rail cavity 11 to form a lower slide rail front inner folded edge 12 in the shape of an n-shaped cross section, and the upper portion of the rear side in the length direction of the lower slide rail 1 is also folded and expanded in the direction of the lower slide rail cavity 11 to form a lower slide rail rear inner folded edge 13 in the shape of an n-shaped cross section; the lower portion of the front side in the length direction of the aforementioned upper slide rail 2 (i.e., the lower portion of the aforementioned upper slide rail front wall body) is folded and expanded outward to form an upper slide rail front outer folded edge 23 in the shape of a U-shaped cross section, and the lower portion of the rear side in the length direction of the upper slide rail 2 (i.e., the lower portion of the aforementioned upper slide rail rear wall body) is also folded and expanded outward to form an upper slide rail rear outer folded edge 24 in the shape of a U-shaped cross section, the upper slide rail front outer folded edge 23 cooperates with the lower slide rail front inner folded edge 12, and the slide rail front anti-backlash device 7 is arranged in the space between the outer wall of the upper slide rail front outer folded edge 23 and the inner wall of the lower slide rail front inner folded edge 12, the upper slide rail rear outer folded edge 24 cooperates with the lower slide rail rear inner folded edge 13, and the slide rail rear anti-backlash device 8 is arranged in the space between the outer wall of the upper slide rail rear outer folded edge 24 and the inner wall of the lower slide rail rear inner folded edge 13, and the upper slide rail 2 and the lower slide rail 1 form a sliding pair through the slide rail front and rear anti-backlash devices 7, 8.

[0028] As shown in Figure 1 , the left end of the aforementioned screw rod 3 is provided with a screw rod threaded seat 31 in the shape of an L-shaped cross section, the screw rod threaded seat 31 is fixed to the left end of the lower slide rail 1 in the aforementioned lower slide rail cavity 11 through a screw rod threaded seat fixing screw 311, the right end of the screw rod 3 is provided with a screw rod fixing seat 32, the screw rod fixing seat 32 is fixed to the right end of the lower slide rail 1 in the aforementioned lower slide rail cavity 11 through a screw rod fixing seat screw 321, and a screw rod locking nut 33 is screwed on the end of the right side of the screw rod 3 that protrudes from the right side of the screw rod fixing seat 32.

[0029] A seat frame fixing stud 25 is fixed on the top wall of the aforementioned upper slide rail 2 at the left end and the right end, respectively, and in the use state, the seat frame fixing stud 25 is fixedly connected with the seat frame of the automobile seat; a motor bracket fixing hole 26 is formed on the top wall of the upper slide rail 2 at positions corresponding to the left side and the right side of the aforementioned worm gear reducer matching cavity 211.

[0030] As shown in Figure 2 As shown in

[0031] As shown in Figure 1 As shown in Figure 3 As shown in

[0032] As shown in Figures 1 to 3 As shown in

[0033] As shown in

[0034] The applicant needs to explain: because the worm gear reducer 4 can be from the structure disclosed by CN118163683A, or other similar structures (the former is selected in the embodiment), so the applicant does not expand the description. In addition, because the cooperation relationship of the upper and lower slide rails 2, 1 is also a well-known technology in the art, so the applicant also does not make more detailed description.

[0035] In summary, the technical solutions provided by the present application make up for the shortcomings in the prior art, successfully complete the invention task, and faithfully fulfill the technical effects described by the applicant in the technical effect column above.

Claims

1. A deceleration device and upper slide rail cooperation structure for an automotive seat slide rail, the automotive seat slide rail comprising a lower slide rail (1); an upper slide rail (2), the upper slide rail (2) being disposed within the lower slide rail cavity (11) of the lower slide rail (1) and forming a sliding pair with the lower slide rail (1); a screw (3), the screw (3) being fixed within the lower slide rail cavity (11) at a position corresponding to the lower slide rail cavity (21) of the upper slide rail (2); the deceleration device and upper slide rail cooperation structure comprising a worm gear reducer (4), the worm gear reducer (4) being threadedly engaged with the screw (3) and the upper part of the worm gear reducer (4) extending into the worm gear reducer cooperation cavity (211) opened on the top wall of the upper slide rail (2), characterized in that: A left reinforcing snap-fit ​​plate (5) for the worm gear reducer is loosely fitted on the screw (3) while it is in contact with the left side of the worm gear reducer (4), and a right reinforcing snap-fit ​​plate (6) for the worm gear reducer is loosely fitted on the screw (3) while it is in contact with the right side of the worm gear reducer (4). The upper part of the left and right reinforcing snap-fit ​​plates (5, 6) is in the position corresponding to the worm gear reducer mating cavity (211) and is in the state of holding the worm gear reducer (4) in a tenon-and-mortise fit with the upper slide rail (2), while the lower front and rear sides of the left and right reinforcing snap-fit ​​plates (5, 6) are in tenon-and-mortise fit with the upper slide rail front wall and the upper slide rail rear wall of the upper slide rail (2), respectively.

2. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 1, characterized in that: A left retaining cavity (2111) extends from the center of the left end of the upper cavity opening of the worm gear reducer (211), while a right retaining cavity (2112) extends from the center of the right end of the upper cavity opening of the worm gear reducer (211). On the upper slide rail (2), on the front and rear walls, respectively corresponding to the lower front and rear sides of the left retaining cavity (2111), there are worm gear reducer left reinforcing retaining plate retaining holes (212) penetrating the front and rear walls of the upper slide rail. Each of the following locations has a worm gear reducer right reinforcement snap-fit ​​plate snap-fit ​​hole (213) that passes through the front wall of the upper slide rail and the rear wall of the upper slide rail respectively; the upper end of the worm gear reducer left reinforcement snap-fit ​​plate (5) is tenon-fitted with the left snap-fit ​​cavity (2111), and the front and rear sides of the lower end are tenon-fitted with the worm gear reducer left reinforcement snap-fit ​​plate snap-fit ​​hole (212); the upper end of the worm gear reducer right reinforcement snap-fit ​​plate (6) is tenon-fitted with the right snap-fit ​​cavity (2112), and the front and rear sides of the lower end are tenon-fitted with the worm gear reducer right reinforcement snap-fit ​​plate snap-fit ​​hole (213).

3. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 2, characterized in that: A left reinforcing plate screw hole (51) is opened in the middle of the height direction of the left reinforcing plate (5) of the worm gear reducer. The left reinforcing plate screw hole (51) is loosely fitted on the screw (3). A worm gear reducer left reinforcing plate tenon (52) is formed at the upper end of the worm gear reducer left reinforcing plate (5), and a worm gear reducer left reinforcing plate foot (53) is formed on the front and rear sides of the lower end. The worm gear reducer left reinforcing plate tenon (52) is tenon-mortised with the left clamping cavity (2111), and the worm gear reducer left reinforcing plate foot (53) is tenon-mortised with the worm gear reducer left reinforcing plate foot hole (212). A right reinforcing plate screw hole (61) is provided in the middle of the height direction of the right reinforcing plate (6) of the worm gear reducer. The right reinforcing plate screw hole (61) is loosely fitted on the screw (3). A worm gear reducer right reinforcing plate tenon (62) is formed at the upper end of the worm gear reducer right reinforcing plate (6), and a worm gear reducer right reinforcing plate foot (63) protruding outward is formed on the front and rear sides of the lower end. The worm gear reducer right reinforcing plate tenon (62) is tenon-mortised with the right clamping cavity (2112), and the worm gear reducer right reinforcing plate foot (63) is tenon-mortised with the worm gear reducer right reinforcing plate foot hole (213).

4. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 1, 2, or 3, characterized in that: The left reinforcing snap-fit ​​plate (5) and the right reinforcing snap-fit ​​plate (6) of the worm gear reducer each have a double-convex Chinese character structure stacked from bottom to top.

5. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 1, characterized in that: The lower slide rail (1) is fixed to the vehicle floor by fasteners in use. The upper front part of the lower slide rail (1) along its length direction is folded towards the lower slide rail cavity (11) to form an inwardly folded edge (12) with an n-shaped cross-section. Similarly, the upper rear part of the lower slide rail (1) along its length direction is folded towards the lower slide rail cavity (11) to form an inwardly folded edge (13) with an n-shaped cross-section. The lower front part of the upper slide rail (2) along its length direction is folded outward to form an outwardly folded edge (23) with a U-shaped cross-section. The lower rear part of the upper slide rail (2) along its length direction is also folded outward to form... There is an upper slide rail with a U-shaped rear outer fold (24), an upper slide rail with a front outer fold (23) and a lower slide rail with a front inner fold (12) that cooperate with each other, and a slide rail front clearance elimination device (7) is provided in the space between the outer wall of the upper slide rail with a front outer fold (23) and the inner wall of the lower slide rail with a front inner fold (12). The upper slide rail with a rear outer fold (24) and a lower slide rail with a rear inner fold (13) that cooperate with each other, and a slide rail rear clearance elimination device (8) is provided in the space between the outer wall of the upper slide rail with a rear outer fold (24) and the inner wall of the lower slide rail with a rear inner fold (13). The upper slide rail (2) and the lower slide rail (1) form a sliding pair by the slide rail front and rear clearance elimination devices (7, 8).

6. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 1, characterized in that: A screw thread seat (31) is provided at the left end of the screw (3). The screw thread seat (31) is fixed to the left end of the lower slide rail (1) in the lower slide rail cavity (11) by a screw thread seat fixing screw (311). A screw fixing seat (32) is provided at the right end of the screw (3). The screw fixing seat (32) is fixed to the right end of the lower slide rail (1) in the lower slide rail cavity (11) by a screw fixing seat screw (321). A screw locking nut (33) is screwed onto the end of the screw (3) that protrudes from the right side of the screw fixing seat (32).

7. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 1, characterized in that: On the top wall of the upper slide rail (2), at the left and right ends, there are seat frame fixing studs (25). In use, the seat frame fixing studs (25) are fixedly connected to the seat frame of the car seat. On the top wall of the upper slide rail (2), there are motor frame fixing holes (26) on the left and right sides corresponding to the worm gear reducer cavity (211).

8. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 3, characterized in that: The upper part of the worm gear reducer (4) protrudes from the top wall of the upper slide rail (2) in a state of tight fit with the worm gear reducer cavity (211); the left and right reinforcing snap-fit ​​plates (52, 62) of the worm gear reducer protrude from the top wall of the upper slide rail (2) in a state of mortise and tenon fit with the left and right snap-fit ​​cavities (2111, 2112) respectively.

9. The cooperation structure between the deceleration device and the upper slide rail of the automobile seat slide rail according to claim 5, characterized in that: The slide rail front backlash elimination device (7) includes a front ball frame (71) and front balls (72). A set of front balls (72) is spaced apart on the upper and lower parts of the left end and the upper and lower parts of the right end of the front ball frame (71). The front ball frame (71) together with the front balls (72) is located in the space between the outer wall of the front outer fold (23) of the upper slide rail and the inner wall of the front inner fold (12) of the lower slide rail. The slide rail front backlash elimination device (8) includes a rear ball frame (81) and rear balls (82). A set of rear balls (82) is spaced apart on the upper and lower parts of the left end and the upper and lower parts of the right end of the rear ball frame (81). The rear ball frame (81) together with the rear balls (82) is located in the space between the outer wall of the rear outer fold (24) of the upper slide rail and the inner wall of the rear inner fold (13) of the lower slide rail.

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