Automobile seat sliding rail with anti-deformation function and automobile seat thereof

Abstract

The invention discloses an automobile seat sliding rail with an anti-deformation function and an automobile seat thereof. Comprising a lower sliding rail, an upper sliding rail left-right displacement driving mechanism arranged in a lower sliding rail cavity, an upper sliding rail, a front gap eliminating mechanism and a lower gap eliminating mechanism, wherein the upper sliding rail is movably matched with the lower sliding rail, and the middle of the upper sliding rail is fixed to the upper sliding rail left-right displacement driving mechanism; the front gap eliminating mechanism is used for enabling the upper sliding rail to be movably matched with the lower sliding rail and is arranged between the front portions of the upper sliding rail and the lower sliding rail; the anti-deformation sliding guide structure is characterized by further comprising an upper sliding rail anti-deformation sliding guide mechanism used for increasing the sliding rail contact area of the upper sliding rail, and the upper sliding rail anti-deformation sliding guide mechanism is arranged in a lower sliding rail cavity. The lower portion of the upper sliding rail is supported on the upper sliding rail anti-deformation sliding guide mechanism and forms a sliding pair with the upward side of the upper sliding rail anti-deformation sliding guide mechanism. The automobile seat sliding rail has the advantages that the situation that the upper sliding rail sinks and even deforms due to violent jolting in the automobile driving process can be avoided, the service life of the automobile seat sliding rail is guaranteed, and the automobile seat sliding rail has excellent adjusting precision reliability and position stability after adjustment.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts, and in particular relates to an automobile seat slide rail with an anti-deformation function, and also relates to an automobile seat thereof. Background Art

[0002] The aforementioned car seat slide rail is the car seat adjustment slide rail, which is an indispensable and important part of the car seat with adjustable front and rear positions. It not only involves fixing the car seat, but also plays the role of adjusting the car seat and is also related to many factors such as the safety of passengers. As for the macro structure of the car seat slide rail, it is mainly composed of a lower slide rail (also called "outer slide rail"), an upper slide rail (also called "inner slide rail") and a driving mechanism for driving the upper slide rail to move along the lower slide rail as required (such as forward or backward displacement) to achieve adjustment. Since the seat of the car seat is fixed to the upper slide rail through its seat pan, when the upper slide rail is driven by the driving mechanism to move forward or backward, it drives the seat pan together with the car seat to move accordingly.

[0003] As is known in the industry, the aforementioned lower slide rail is a static slide rail, which is fixed to the vehicle floor (also called "carriage floor") once installed on the vehicle, and cannot be adjusted randomly during use. The aforementioned upper slide rail is a dynamic slide rail, and since it forms a sliding pair with the lower slide rail, the passengers can adjust it forward and backward as needed.

[0004] There is no shortage of technical information on automobile seat slides in the public Chinese patent documents, such as CN116022040B (a sliding mechanism for an automobile seat slide), CN103029600A (a structurally improved automobile seat slide), CN203974599U (an automobile seat slide), CN104108322B (an automobile seat slide), CN116039463A (an automobile seat slide locking structure), CN217892570U (a gap eliminating device for a long slide of a vehicle seat) and CN115593282A (a long slide for an automobile seat with a good gap eliminating effect), etc.

[0005] A ball rack equipped with balls is arranged in the space between the walls on the opposite sides of the length direction after the upper and lower slide rails cooperate with each other, so that the upper slide rail (i.e., "inner slide rail") slides relative to the lower slide rail (i.e., "outer slide rail") under the action of a power device. This is a commonly used structural form for achieving car seat adjustment. The aforementioned walls on the opposite sides are the outer side surface of the side wall of the upper slide rail and the inner side surface of the side wall of the lower slide rail. The aforementioned ball rack equipped with balls is usually called a clearance elimination mechanism. The sliding of the upper slide rail is essentially achieved by relying on the clearance elimination mechanism. A typical example of this structure can be found in CN203974599U mentioned above. However, this structural form has the following technical problems: since the contact fit between the ball and the outer side surface of the side wall of the upper slide rail and the inner side surface of the side wall of the lower slide rail is tangent, the stress at the contact point will be highly concentrated, which is easy to cause wear and fatigue damage to the aforementioned side wall; the ball and the contact surface will produce elastic contact deformation under the action of axial load, thereby further aggravating the stress concentration; although the rolling friction between the ball and the contact surface is less than the sliding friction, under heavy load and / or poor lubrication, the friction force may still increase significantly; due to the contact stress concentration and friction factors, the wear of the ball and the contact surface will be aggravated under repeated adjustment, affecting the transmission accuracy and service life; resulting in a relative lack of accuracy. If the upper slide rail is formed of a sliding bracket with a roller at the bottom and the lower slide rail to form a rolling pair, and the sliding bracket drives the upper slide rail and the car seat fixed thereto to move, then this structure will often become relatively complicated, a typical example of which is the "sliding mechanism of a car seat slide rail" recommended by CN218750424U.

[0006] As mentioned above, it is of positive significance to explore a car seat slide rail that can make up for the disadvantages of the structure similar to CN203974599U and eliminate the deficiencies of the structural design such as CN218750424U. The technical solution to be introduced below is produced in this context. Summary of the invention

[0007] The task of the present invention is to provide a car seat slide rail with an anti-deformation function, which helps to increase the sliding contact area of ​​the lower part of the upper slide rail in the length direction, so as to avoid the lower slide rail from being dented or even deformed due to bumps in the vehicle during driving, causing discomfort and lack of security for the passengers due to up and down shaking and / or front and back movement, and is beneficial to ensuring excellent adjustment accuracy reliability and stability in the adjusted position during the long service life, and is beneficial to ensuring the simplicity of the structure, so that it is easy to manufacture and assemble and embodies economy.

[0008] Another task of the present invention is to provide a vehicle seat, which can faithfully and comprehensively realize all the technical effects of the vehicle seat slide rail with anti-deformation function.

[0009] The task of the present invention is accomplished in this way. A car seat slide rail with an anti-deformation function comprises a lower rail, an upper slide rail left-right displacement driving mechanism arranged in a lower rail cavity of the lower rail, an upper slide rail that cooperates with the movement of the lower rail and is fixed to the upper slide rail left-right displacement driving mechanism in the middle of the length direction, a front gap elimination mechanism that is used to make the upper slide rail cooperate with the movement of the lower rail and is arranged between the front of the upper and lower rails in the length direction, and a rear gap elimination mechanism that is arranged between the rear of the upper and lower rails in the length direction. The feature is that it also includes an upper slide rail anti-deformation sliding guide mechanism for increasing the slide contact area of ​​the upper slide rail. The upper slide rail anti-deformation sliding guide mechanism is arranged in the lower rail cavity, and the lower part of the upper slide rail in the length direction is supported on the upper slide rail anti-deformation sliding guide mechanism and forms a sliding pair with the upper side of the upper slide rail anti-deformation sliding guide mechanism.

[0010] In a specific embodiment of the present invention, the lower rail cavity is formed on the side of the lower rail facing upward and passes through from the left end to the right end in the length direction of the lower rail. The lower rail cavity includes a bracket fixing cavity, an upper slide rail front folding edge accommodating cavity, an upper slide rail rear folding edge accommodating cavity and an upper slide rail movement giving way groove. The bracket fixing cavity is located in the middle of the lower rail. The upper slide rail front folding edge accommodating cavity is formed by the lower rail front side wall in the length direction of the lower rail being folded toward the direction of the bracket fixing cavity, and the upper slide rail rear folding edge accommodating cavity is formed by the lower rail rear side wall in the length direction of the lower rail being folded toward the direction of the bracket fixing cavity and corresponding to the upper slide rail front folding edge accommodating cavity, wherein the lower rail front side wall is formed with a lower rail front side wall rear flange folded toward the direction of the lower rail rear side wall, and the lower rail rear side wall is formed with a lower rail rear side wall front flange folded toward the direction of the lower rail front side wall and corresponding to the lower rail front side wall rear flange. The cam is an angular channel formed between a pair of camshafts and a pair of camshafts, and the camshafts are connected to a pair of camshafts which are connected by a pair of camshafts, the camshafts being connected by a pair of camshafts having two ends, and the camshafts being connected by a pair of camshafts having two ends, and the camshafts being connected by a pair of camshafts having two ends.

[0011] In another specific embodiment of the present invention, an upper slide rail front side folded edge is formed at the lower part of the front side of the upper slide rail in the length direction of the upper slide rail, and a lower slide rail front side wall rear flange protrudes into a groove between the upper slide rail front side folded edge and the lower front side of the upper slide rail, and the lower slide rail front side wall rear flange protrudes into the groove between the upper slide rail rear side wall rear flange protrudes into the groove, and the lower slide rail front side wall rear flange protrudes into the groove, and the lower slide rail front side wall rear flange protrudes into the groove, and the lower slide rail front side wall rear flange protrudes into the groove. The side of the lower slide rail front side wall rear flange protrudes into the groove of the lower slide rail is opposite to the side of the lower slide rail front side wall rear flange protruding into the groove of the lower slide rail. The front side of the upper slide rail anti-deformation sliding guide mechanism constitutes a sliding pair, and the bottom wall of the lower slide rail rear side wall front flange protruding into the groove, the side of the lower slide rail rear side wall front flange protruding into the groove facing away from the lower slide rail rear side wall front flange protruding into the groove and the rear side of the upper slide rail anti-deformation sliding guide mechanism fixed in the bracket fixing cavity constitute a sliding pair; an upper slide rail left and right displacement driving mechanism yielding opening is provided in the middle part of the length direction of the upper slide rail, and the upper part of the upper slide rail left and right displacement driving mechanism protrudes out of the upper surface of the upper slide rail at a position corresponding to the yielding opening of the upper slide rail left and right displacement driving mechanism; the front elimination gap mechanism is arranged between the front side folding edge of the upper slide rail and the facing side of the inner wall of the upper slide rail front folding edge accommodating cavity, and the rear elimination gap mechanism is arranged between the rear side folding edge of the upper slide rail and the facing side of the inner wall of the upper slide rail rear folding edge accommodating cavity.

[0012] In another specific embodiment of the present invention, a screw left end support seat yielding hole is provided on the bottom wall of the bracket fixing cavity of the bracket fixing cavity of the lower rail cavity of the lower rail and is located at the left end, and a screw right end support seat fixing screw hole is provided at the right end, and a pair of card foot matching holes are respectively provided at the left and right ends of the middle part of the width direction of the bottom wall of the bracket fixing cavity; a left positioning flange insertion hole is provided on the upper slide rail and at a position on the left side of the yielding opening of the left and right displacement driving mechanism of the upper slide rail, and a right positioning flange insertion hole is provided at a position on the right side of the yielding opening of the left and right displacement driving mechanism of the upper slide rail, and the left and right displacement driving mechanism of the upper slide rail is fixed in the bracket fixing cavity at a position corresponding to the screw left end support seat yielding hole and the screw right end support seat fixing screw hole, and the upper slide rail is fixed to the upper part of the left and right displacement driving mechanism of the upper slide rail through the left and right positioning flange insertion holes; the upper slide rail anti-deformation sliding guide mechanism is fixed by card foot matching holes in the bracket fixing cavity.

[0013] In another specific embodiment of the present invention, the left-right displacement driving mechanism of the upper slide rail includes a screw left end support seat, a screw right end support seat, a worm gear box seat, a worm gear box and a worm gear box moving screw, the upper end of the screw left end support seat at a position corresponding to the clearance hole of the screw left end support seat from the side of the bottom wall of the bracket fixing cavity facing away from the bracket fixing cavity upward into the bracket fixing cavity and a screw sleeve is fixed, the lower end of the screw left end support seat is formed with an extended flange edge, the surface of the extended flange edge facing upward is aligned with the bracket The bottom wall of the cavity is in contact with the side of the bracket fixing cavity away from the bottom wall of the cavity, wherein the left end support seat of the screw rod and the portion corresponding to the clearance hole of the left end support seat of the screw rod are tightly matched with the clearance hole of the left end support seat of the screw rod, the right end support seat of the screw rod is supported in the bracket fixing cavity at a position corresponding to the fixing screw hole of the right end support seat of the screw rod and is fixed by the fixing screw of the right end support seat of the screw rod, and a matching threaded hole for the right end of the screw rod is provided at the upper end of the right end support seat of the screw rod, and a left fixing wing is formed on the upper left side of the worm gear box seat, and on the side of the left fixing wing facing upward and corresponding to the left The position of the positioning flange insertion hole constitutes a left positioning flange, and the left positioning flange is inserted into the left positioning flange insertion hole and is welded to the upper slide rail. A right fixing wing is formed on the upper right side of the worm gear box seat, and a right positioning flange is formed on the side of the right fixing wing facing upward and at a position corresponding to the right positioning flange insertion hole. The right positioning flange is inserted into the right positioning flange insertion hole and is also welded to the upper slide rail. The worm gear box is fixed to the middle part of the worm gear box seat, and the upper part of the worm gear box is at the left and right positions corresponding to the upper slide rail. The position of the shift driving mechanism's yielding opening protrudes from the upper surface of the upper slide rail, and the middle part of the worm gear box moving screw cooperates with the worm gear box thread, so that the worm gear box and the upper slide rail move left or right along the worm gear box moving screw, and the left end of the worm gear box moving screw cooperates with the screw sleeve, and the left end of the worm gear box moving screw extends to the left side of the screw left end support seat and is limited by the limiting nut, and the right end of the worm gear box moving screw is supported on the screw right end support seat at a position corresponding to the matching threaded hole of the screw right end.

[0014] In another specific embodiment of the present invention, the upper slide rail anti-deformation sliding guide mechanism includes a front sliding guide rod, a rear sliding guide rod, a sliding guide rod left connecting frame, a sliding guide rod right connecting frame and a sliding guide rod middle connecting frame. The front sliding guide rod and the rear sliding guide rod are parallel to each other front and back in the length direction. The sliding guide rod left connecting frame is welded and fixed between the left ends of the front and rear sliding guide rods facing downward, the sliding guide rod right connecting frame is welded and fixed between the right ends of the front and rear sliding guide rods facing downward, and the sliding guide rod left connecting frame and the sliding guide rod right connecting frame are welded and fixed between the right ends of the front and rear sliding guide rods facing downward, and the sliding guide rod left connecting frame and the sliding guide rod right connecting frame are welded and fixed between the right ends of the front and rear sliding guide rods facing downward, and the sliding guide rod left connecting frame and the sliding guide rod right connecting frame are welded and fixed between the left ... The connecting frames are each fixed with the above-mentioned card foot matching holes, and the middle connecting frame of the sliding guide rod is welded and fixed between the middle parts of the front and rear sliding guide rods facing downward and is limited by the bottom wall of the bracket fixing cavity of the bracket fixing cavity; the bottom wall of the rear flange of the front side wall of the lower sliding rail protrudes into the groove on the side facing away from the rear flange of the front side wall of the lower sliding rail and the side surface of the front sliding guide rod facing upward constitute a sliding pair, and the bottom wall of the front flange of the rear side wall of the lower sliding rail protrudes into the groove on the side facing away from the front flange of the rear side wall of the lower sliding rail and the side surface of the rear sliding guide rod facing upward constitute a sliding pair.

[0015] In a more specific embodiment of the present invention, an intermediate connecting frame boss limiting hole is provided on the bottom wall of the bracket fixing cavity of the bracket fixing cavity and at a position corresponding to the intermediate connecting frame of the sliding guide rod, and an intermediate connecting frame boss is fixed at the bottom of the intermediate connecting frame of the sliding guide rod and at a position corresponding to the intermediate connecting frame boss limiting hole, and the intermediate connecting frame boss is inserted into the intermediate connecting frame boss limiting hole; a pair of left connecting frame clamping feet are extended on the right side of the left connecting frame of the sliding guide rod, and the pair of left connecting frame clamping feet are clamped with the pair of clamping foot matching holes located at the middle left end of the width direction of the bottom wall of the bracket fixing cavity, and a pair of right connecting frame clamping feet are extended on the right side of the right connecting frame of the sliding guide rod, and the pair of right connecting frame clamping feet are clamped with the pair of clamping foot matching holes located at the middle right end of the width direction of the bottom wall of the bracket fixing cavity.

[0016] In a further specific embodiment of the present invention, a guide rod left end fixed connecting plate is welded and fixed between the left ends of the front and rear sliding guide rods, and the guide rod left end fixed connecting plate is located on the left side of the sliding guide rod left connecting frame, and a guide rod right end fixed connecting plate is welded and fixed between the right ends of the front and rear sliding guide rods, and the guide rod right end fixed connecting plate is located on the right side of the sliding guide rod right connecting frame.

[0017] In yet another specific embodiment of the present invention, the surface of the front sliding guide rod facing upwards and cooperating with the side of the bottom wall of the rear flange of the front side wall of the lower slide rail that faces away from the side of the rear flange of the front side wall of the lower slide rail that faces away from the side of the rear flange of the rear side wall of the lower slide rail that faces away from the side of the front ... The bottom wall of the rear flange of the front side wall of the lower slide rail is opposite to the side of the rear flange of the front side wall of the lower slide rail and is provided with a front concave cavity of the bottom wall at a position corresponding to the sliding surface of the front sliding guide rod. The bottom wall of the front flange of the rear side wall of the lower slide rail is opposite to the side of the front flange of the rear side wall of the lower slide rail and is provided with a rear concave cavity of the bottom wall at a position corresponding to the sliding surface of the rear sliding guide rod. The front concave cavity of the bottom wall and the rear concave cavity of the bottom wall are concave arc-shaped cavities and respectively form sliding pairs with the sliding surface of the front sliding guide rod and the sliding surface of the rear sliding guide rod.

[0018] Another task of the present invention is accomplished by providing a vehicle seat equipped with the vehicle seat slide rail with anti-deformation function.

[0019] The technical solution provided by the present invention adds an upper slide rail anti-deformation sliding guide mechanism in the lower slide rail cavity of the lower slide rail, thereby enabling the lower portion of the upper slide rail in the length direction to be changed from a suspended state with the bottom of the lower slide rail cavity of the lower slide rail in the prior art to a state of forming a sliding pair with the upper slide rail anti-deformation sliding guide mechanism, thereby significantly increasing the sliding contact area of ​​the upper slide rail on the basis of limited contact sliding cooperation between the front and rear anti-backlash mechanism and the lower slide rail, and can avoid the upper slide rail from being concave or even deformed due to severe bumps during vehicle driving, which causes the passenger to feel uncomfortable up and down jumping and / or moving back and forth and lose a sense of security, which is very beneficial to ensuring the long-term service life of the automobile seat slide rail and embodies excellent adjustment accuracy reliability and stability of the adjusted position; since only the upper slide rail anti-deformation sliding guide mechanism is added to increase the sliding support area of ​​the bottom of the upper slide rail, it will not complicate the overall structure, will not cause trouble to manufacturing and assembly, and can still embody economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the left side after assembly; Figure 3 for Figure 1 and Figure 2 The schematic diagram shown is a diagram of the upper slide rail anti-deformation sliding guide mechanism after being flipped 180°. DETAILED DESCRIPTION

[0021] In order to more clearly understand the technical essence and beneficial effects of the present invention, it will be described in detail in the form of embodiments below. However, the description of the embodiments is not a limitation of the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as within the scope of the technical solution of the present invention.

[0022] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on the current Figure 1 The position state is taken as a reference, and thus it cannot be understood as a special limitation on the technical solution provided by the present invention.

[0023] See also Figure 1 and Figure 2 , showing a lower slide rail 1 which is fixed to the vehicle floor in the use state directly or indirectly and in any fixing manner but is ultimately fixed to the vehicle floor (usually directly fixed to the vehicle floor is the majority), an upper slide rail left-right displacement driving mechanism 2 arranged in a lower slide rail cavity 11 of the lower slide rail 1, an upper slide rail 3 which is movably matched with the lower slide rail 1 and fixed to the upper slide rail left-right displacement driving mechanism 2 in the middle of the length direction, a front clearance eliminating mechanism 4 which is used to make the upper slide rail 3 movably matched with the lower slide rail 1 and is arranged between the front of the upper and lower slide rails 3 and 1 in the length direction, and a rear clearance eliminating mechanism 5 which is arranged between the rear of the upper and lower slide rails 3 and 1 in the length direction.

[0024] As the technical key points of the technical solution provided by the present invention, the structural system of the automobile seat slide rail with anti-deformation function of the present invention also includes an upper slide rail anti-deformation sliding guide mechanism 6 for increasing the slide rail contact area of ​​the upper slide rail 3. The upper slide rail anti-deformation sliding guide mechanism 6 is arranged in the aforementioned lower slide rail cavity 11, and the lower part of the aforementioned upper slide rail 3 in the length direction is supported on the upper slide rail anti-deformation sliding guide mechanism 6 and forms a sliding pair with the upper slide rail anti-deformation sliding guide mechanism 6 on the upper side.

[0025] From the above description, it can be known that the automobile seat slide rail with anti-deformation function described in the present invention refers to the anti-deformation of the upper slide rail 3, that is, enhancing the anti-deformation ability of the upper slide rail 3, because the existing technology, for example, is not limited to the patents mentioned by the applicant in the above background technology column, which only rely on the front and rear anti-backlash mechanisms 4 and 5 to realize the dynamic sliding adjustment of the upper slide rail 3 relative to the static lower slide rail 1. Since the back side of the seat of the automobile seat, that is, the side facing downward, is fixed to the upper slide rail 3, when the upper slide rail 3 slides left and right as needed, the entire seat together with the backrest also slides accordingly.

[0026] The applicant needs to explain that: the above mentioned upper slide rail 3 slides left or right as needed, that is, slides left or right as needed based on Figure 1 However, when the upper slide rail 3 is installed on a vehicle, according to common knowledge, the upper slide rail 3 slides forward and backward, that is, slides forward or backward.

[0027] In addition, the applicant believes that it is necessary to explain that: as a car seat slide, it should appear in a pair. Although this application only provides one side of a pair of car seat slides (i.e., one set) of the car seat slides required for a car seat, since the structures of the pair of car seat slides are similar to each other, it will not cause confusion to the understanding of those skilled in the art. For this, please refer to Chinese patent application No. 202211044758.6 and 202210897640.1, etc.

[0028] See you next time Figure 1 and Figure 2 The aforementioned lower rail cavity 11 is formed on the upper side of the aforementioned lower rail 1 and passes through from the left end to the right end in the length direction of the lower rail 1. The lower rail cavity 11 includes a bracket fixing cavity 111, an upper rail front folding accommodating cavity 112, an upper rail rear folding accommodating cavity 113 and an upper rail moving clearance groove 114. The bracket fixing cavity 111 is located in the middle of the lower rail 1. The upper rail front folding accommodating cavity 112 is formed by folding the lower rail front side wall 12 in the length direction of the lower rail 1 toward the direction of the bracket fixing cavity 11. The upper rail rear folding accommodating cavity 113 is formed by folding the lower rail rear side wall 13 in the length direction of the lower rail 1 toward the bracket fixing cavity. The lower rail front side wall 12 is formed by folding and unfolding in the direction of the lower rail rear side wall 13 and corresponding to the upper rail front folding accommodating cavity 112, wherein the lower rail front side wall 12 is formed with a lower rail front side wall rear flange 121 folded and unfolded in the direction of the lower rail rear side wall 13, and the lower rail rear side wall 13 is formed with a lower rail rear side wall front flange 131 folded and unfolded in the direction of the lower rail front side wall 12 and corresponding to the lower rail front side wall rear flange 121, and the space between the lower rail front side wall rear flange 121 and the lower rail rear side wall front flange 131 is formed as the upper rail moving clearance groove 114 for making the aforementioned bracket fixing cavity 111 communicate with the outside, according to the aforementioned description and combined with Figure 1 and Figure 2It can be seen that the space between the rear flange 121 of the front side wall of the lower slide rail and the opposite side of the front side wall 12 of the lower slide rail constitutes the upper slide rail front flange accommodating chamber 112. Similarly, the space between the front flange 131 of the rear side wall of the lower slide rail and the opposite side of the rear side wall 13 of the lower slide rail constitutes the upper slide rail rear flange accommodating chamber 113. The upper slide rail left-right displacement driving mechanism 2 and the upper slide rail anti-deformation sliding guide mechanism 6 are fixed in the bracket fixing chamber 111. The length direction of the upper slide rail 3 The front side of the upper slide rail is movably accommodated in the upper slide rail front folding accommodating cavity 112, and the rear side is movably accommodated in the upper slide rail rear folding accommodating cavity 113, and the middle part of the upper slide rail 3 in the longitudinal direction is fixed to the upper slide rail left-right displacement driving mechanism 2 in a state where it protrudes out of the upper surface of the lower slide rail 1 through the upper slide rail moving clearance groove 114; the front clearance elimination mechanism 4 is arranged between the front side of the upper slide rail 3 and the inner wall 1121 of the upper slide rail front folding accommodating cavity 112 of the upper slide rail front folding accommodating cavity ( Figure 2 The aforementioned rear clearance elimination mechanism 5 is arranged on the rear side of the aforementioned upper slide rail 3 and the inner wall 1131 of the upper slide rail rear folding accommodating cavity 113 of the upper slide rail rear folding accommodating cavity 113 ( Figure 2 between the

[0029] See you next time Figure 1 and Figure 2 The front lower part of the upper rail 3 in the longitudinal direction is provided with an upper rail front fold 31, and a lower rail front wall rear flange insertion groove 311 is formed between the upper rail front fold 31 and the lower front side surface of the upper rail 3, and the lower rail front wall rear flange 121 is inserted into the lower rail front wall rear flange insertion groove 311 ( Figure 2 As shown, an upper rail rear side fold 32 is formed at the lower rear part of the length direction of the upper rail 3, and a lower rail rear side wall front flange insertion groove 321 is formed between the upper rail rear side fold 32 and the lower rear side surface of the upper rail 3, and the lower rail rear side wall front flange 131 is inserted into the lower rail rear side wall front flange insertion groove 321 ( Figure 2 The bottom wall 3111 of the lower rail front side wall rear flange protruding into the groove 311 of the lower rail front side wall rear flange protruding into the groove 311 faces away from the side of the lower rail front side wall rear flange protruding into the groove 311 and forms a sliding pair with the front side of the upper rail anti-deformation sliding guide mechanism 6 fixed in the bracket fixing cavity 111 of the lower rail cavity 11 of the aforementioned lower rail 1, and the bottom wall 3211 of the lower rail rear side wall front flange protruding into the groove 321 of the lower rail rear side wall front flange protruding into the groove faces away from the side of the lower rail rear side wall front flange protruding into the groove 321 and forms a sliding pair with the rear side of the upper rail anti-deformation sliding guide mechanism 6 fixed in the aforementioned bracket fixing cavity 111; an upper rail left and right displacement driving mechanism yielding opening 33 ( Figure 2As shown in the figure), the upper part of the aforementioned upper slide rail left-right displacement driving mechanism 2 protrudes out of the upper surface of the upper slide rail 3 at a position corresponding to the yield opening 33 of the aforementioned upper slide rail left-right displacement driving mechanism; the aforementioned front gap eliminating mechanism 4 is arranged between the aforementioned upper slide rail front side folding edge 31 and the opposite side of the aforementioned upper slide rail front folding edge accommodating cavity inner wall 1121, and the aforementioned rear gap eliminating mechanism 5 is arranged between the aforementioned upper slide rail rear side folding edge 32 and the opposite side of the aforementioned upper slide rail rear folding edge accommodating cavity inner wall 1131.

[0030] Since the specific structure and function of the front and rear anti-backlash mechanisms 4 and 5 mentioned above belong to the prior art, they are composed of a ball rack and balls arranged on the ball rack, and can be referred to but not limited to the mentioned Chinese patents such as CN203974599U, the applicant will not elaborate on them in detail.

[0031] In order to prevent the front anti-backlash mechanism 4 composed of the front ball retainer 41 and the front balls 42 spaced apart on the front ball retainer 41 from escaping, a front anti-backlash mechanism stopper 312 is formed at the positions corresponding to the left and right end slots of the rear flange protruding into the groove 311 of the front side wall of the aforementioned lower slide rail. Similarly, in order to prevent the rear anti-backlash mechanism 5 composed of the rear ball retainer 51 and the rear balls 52 spaced apart on the rear ball retainer 51 from escaping, a rear anti-backlash mechanism stopper 322 is formed at the positions corresponding to the left and right end slots of the front flange protruding into the groove 321 of the rear side wall of the aforementioned lower slide rail. Figure 1 and Figure 2 According to the diagram and professional common sense, it can be known that the function of the front and rear balls 42, 52 of the structural system of the front and rear clearance eliminating mechanisms 4, 5 is to respectively form a sliding fit with the front and rear side wall folds 31, 32 of the upper slide rail 3.

[0032] Please see the key Figure 1A screw left end support seat clearance hole 1111 is provided on the bottom wall of the bracket fixing cavity 111 of the lower rail cavity 11 of the lower rail 1 and is located at the left end, and a screw right end support seat fixing screw hole 1112 is provided at the right end, and a pair of foot matching holes 1113 are provided at the left and right ends of the middle part of the width direction of the bottom wall of the bracket fixing cavity; a left positioning flange insertion hole 34a is provided on the upper rail 3 and is located at the left side of the clearance opening 33 of the upper rail left and right displacement driving mechanism, and a left positioning flange insertion hole 34a is provided at the left side of the upper rail left and right displacement driving mechanism A right positioning flange insertion hole 34b is provided at the right side of the clearance opening 33, and the upper slide rail left-right displacement driving mechanism 2 is located in the bracket fixing cavity 111 at a position corresponding to the clearance hole 1111 of the left end support seat of the screw rod and the fixing screw hole 1112 of the right end support seat of the screw rod. The upper slide rail 3 is fixed to the upper part of the upper slide rail left-right displacement driving mechanism 2 through the left and right positioning flange insertion holes 34a and 34b; the upper slide rail anti-deformation sliding guide mechanism 6 is fixed with the aforementioned card foot matching hole 1113 in the bracket fixing cavity 111.

[0033] Depend on Figure 1As shown, the aforementioned upper slide rail left-right displacement driving mechanism 2 includes a screw left end support seat 21, a screw right end support seat 22, a worm gear box seat 23, a worm gear box 24 and a worm gear box moving screw 25. The upper end of the screw left end support seat 21 extends upward from the side of the aforementioned bracket fixing cavity bottom wall facing away from the aforementioned bracket fixing cavity 111 into the bracket fixing cavity 111 at a position corresponding to the aforementioned screw left end support seat clearance hole 1111 and is fixed with a screw sleeve 211. The lower end of the screw left end support seat 21 is formed with an extended flange edge 212, and the surface of the extended flange edge 212 facing upward is aligned with the bottom wall of the bracket cavity facing away from the bracket fixing cavity 111. One side is in contact, wherein the left end support seat 21 of the screw rod is tightly matched (i.e., "tightly matched") with the left end support seat 1111 of the screw rod at a position corresponding to the aforementioned right end support seat fixing screw hole 1112 of the screw rod, and the right end support seat 22 of the screw rod is supported in the aforementioned bracket fixing cavity 111 and is fixed by the right end support seat fixing screw 222 of the screw rod, and a right end matching threaded hole 221 of the screw rod is provided at the upper end of the right end support seat 22 of the screw rod, and a left fixed wing 231 is formed on the upper left side of the worm gear box seat 23, and on the side of the left fixed wing 231 facing upward and corresponding to the aforementioned left positioning The position of the flange insertion hole 34a constitutes a left positioning flange 2311, and the left positioning flange 2311 penetrates into the aforementioned left positioning flange insertion hole 34a and is welded to the aforementioned upper slide rail 3. A right fixing wing 232 is formed on the upper right side of the worm gear box seat 23, and a right positioning flange 2321 is formed on the side facing upward and at a position corresponding to the aforementioned right positioning flange insertion hole 34b. The right positioning flange 2321 penetrates into the aforementioned right positioning flange insertion hole 34b and is also welded to the aforementioned upper slide rail 3. The worm gear box 24 is fixed to the middle part of the worm gear box seat 23, and the upper part of the worm gear box 24 is corresponding to the front The position of the yielding opening 33 of the upper slide rail left-right displacement driving mechanism protrudes from the upper surface of the aforementioned upper slide rail 3, and the middle part of the worm gear box moving screw 25 is threadedly matched with the worm gear box 24, so that the worm gear box 24 and the upper slide rail 3 move left or right along the worm gear box moving screw 25, and the left end of the worm gear box moving screw 25 is matched with the aforementioned screw sleeve 211, and the left end of the worm gear box moving screw 25 extends to the left side of the aforementioned screw left end support seat 21 and is limited by the limiting nut, and the right end of the worm gear box moving screw 25 is supported on the aforementioned screw right end support seat 22 at a position corresponding to the aforementioned screw right end matching threaded hole 221.

[0034] See also Figure 3 And combined with Figure 1 and Figure 2The upper slide rail anti-deformation sliding guide mechanism 6 includes a front sliding guide rod 61, a rear sliding guide rod 62, a sliding guide rod left connecting frame 63, a sliding guide rod right connecting frame 64 and a sliding guide rod middle connecting frame 65. The front sliding guide rod 61 and the rear sliding guide rod 62 are parallel to each other in the length direction. The sliding guide rod left connecting frame 63 is welded and fixed between the left ends of the front and rear sliding guide rods 61 and 62 facing downward. The sliding guide rod right connecting frame 64 is welded and fixed between the right ends of the front and rear sliding guide rods 61 and 62 facing downward. The sliding guide rod left connecting frame 63 and the sliding guide rod right connecting frame 64 are respectively connected to the aforementioned The card foot matching hole 1113 is fixed by card fitting, and the sliding guide rod intermediate connecting frame 65 is welded and fixed between the downward side of the middle part of the front and rear sliding guide rods 61, 62 and is limited by the bottom wall of the bracket fixing cavity 111; the side of the rear flange of the front side wall of the aforementioned lower sliding rail protruding into the groove bottom wall 3111 facing away from the rear flange of the front side wall of the aforementioned lower sliding rail protruding into the groove 311 and the side surface of the aforementioned front sliding guide rod 61 facing upward constitute a sliding pair, and the side of the front flange of the rear side wall of the aforementioned lower sliding rail protruding into the groove bottom wall 3211 facing away from the front flange of the rear side wall of the aforementioned lower sliding rail protruding into the groove 321 and the side surface of the aforementioned rear sliding guide rod 62 facing upward constitute a sliding pair.

[0035] An intermediate connecting frame boss limiting hole 1114 is provided on the bottom wall of the bracket fixing cavity 111 and at a position corresponding to the intermediate connecting frame 65 of the sliding guide rod; an intermediate connecting frame boss 651 is fixed at the bottom of the intermediate connecting frame 65 of the sliding guide rod and at a position corresponding to the intermediate connecting frame boss limiting hole 1114, and the intermediate connecting frame boss 651 is inserted into the intermediate connecting frame boss limiting hole 1114; a pair of left connecting frame clamping feet 631 extends from the right side of the left connecting frame 63 of the sliding guide rod, and the pair of left connecting frame clamping feet 631 are clamped with the pair of clamping foot matching holes 1113 located at the left end of the middle part in the width direction of the bottom wall of the bracket fixing cavity; a pair of right connecting frame clamping feet 641 extends from the right side of the right connecting frame 64 of the sliding guide rod, and the pair of right connecting frame clamping feet 641 are clamped with the pair of clamping foot matching holes 1113 located at the right end of the middle part in the width direction of the bottom wall of the bracket fixing cavity.

[0036] Preferably, a guide rod left end fixed connecting plate 66 is welded and fixed between the left ends of the aforementioned front and rear sliding guide rods 61, 62, and the guide rod left end fixed connecting plate 66 is located on the left side of the aforementioned sliding guide rod left connecting frame 63, and a guide rod right end fixed connecting plate 67 is welded and fixed between the right ends of the front and rear sliding guide rods 61, 62, and the guide rod right end fixed connecting plate 67 is located on the right side of the aforementioned sliding guide rod right connecting frame 64.

[0037] Depend on Figure 2As shown, the surface of the front sliding guide rod 61 facing upwards and cooperating with the bottom wall 3111 of the front side wall of the lower rail, which is opposite to the side of the rear flange of the front side wall of the lower rail, which is protruding into the groove 311, constitutes the front sliding guide rod sliding surface 611, and the surface of the rear sliding guide rod 62 facing upwards and cooperating with the bottom wall 3211 of the front side wall of the lower rail, which is opposite to the side of the front flange of the rear side wall of the lower rail, which is protruding into the groove 321, constitutes the rear sliding guide rod sliding surface 621. The front sliding guide rod sliding surface 611 and the rear sliding guide rod sliding surface 621 are spherical crown-shaped arc surfaces (can also be considered as mortar-shaped arc surfaces), and the lower The rear flange of the front side wall of the sliding rail extends into the groove with its back facing the side of the rear flange of the front side wall of the sliding rail extending into the groove 311, and a front concave cavity 3112 of the bottom wall is formed at a position corresponding to the sliding surface 611 of the aforementioned front sliding guide rod. The front flange of the rear side wall of the sliding rail extends into the groove with its back facing the side of the front flange of the rear side wall of the sliding rail extending into the groove 321, and a rear concave cavity 3212 of the bottom wall is formed at a position corresponding to the sliding surface 621 of the aforementioned rear sliding guide rod. The front concave cavity 3112 of the bottom wall and the rear concave cavity 3212 of the bottom wall are concave arc-shaped cavities and respectively form sliding pairs with the aforementioned front sliding guide rod sliding surface 611 and the rear sliding guide rod sliding surface 621.

[0038] As can be seen from the above, since the front concave cavity 3112 of the bottom wall and the rear concave cavity 3212 of the bottom wall respectively have a mortar-shaped (i.e., spherical) cooperation relationship with the sliding surface 611 of the front sliding guide rod and the sliding surface 621 of the rear sliding guide rod, the cooperation area between the bottom of the upper slide rail 3 and the upper slide rail anti-deformation sliding guide mechanism 6 can be effectively increased. More substantial significance is that the stress concentration problem of the front and rear clearance elimination mechanisms 4 and 5 can be resolved by the upper slide rail anti-deformation sliding guide mechanism 6. If there is no upper slide rail anti-deformation sliding guide mechanism 6, and if debris such as sand chips invade the lower slide rail cavity 11, then when the vehicle encounters poor road conditions and produces severe bumps, sudden braking impacts, etc., it is very likely that the lower slide rail 1 will have a pit (depression) or even deformation on the side that slides with the front and rear clearance elimination mechanisms 4 and 5, thereby causing the technical problems described above by the applicant. Therefore, the technical solution provided by the present invention is undoubtedly the ultimate.

[0039] The applicant has mentioned above that, in actual use, the structure of the present invention has a pair of mutually synchronous electric power mechanisms, such as a motor with forward and reverse functions, which drives the worm 241 of the structural system of the worm gear box 24 of the present invention through a linkage shaft, and the worm 241 drives the worm wheel (through the external thread formed on the outer ring, i.e., the outer wall, of the worm wheel). Since the aforementioned worm gear box moving screw 25 cooperates with the worm wheel hole wall thread (internal thread) of the worm wheel, the worm gear drives the worm wheel to move the entire worm gear box 24 together with the seat fixed to the upper slide rail 3 and the upper slide rail 3 along the worm gear box moving screw 25. Since the connection relationship between the motor and the aforementioned worm belongs to the prior art, for example, it can be seen that the structural forms disclosed in Chinese patent application Nos. 202011597739.7, 202211044758.6, 202210897640.1, 202420854798.6, etc., the applicant only made the above brief description.

[0040] The present invention also provides a car seat which is not specifically shown in the figure, and the car seat is installed with the above-mentioned car seat slide rail with anti-deformation function.

[0041] In summary, the technical solution provided by the present invention makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A car seat slide rail with an anti-deformation function, comprising a lower slide rail (1), an upper slide rail left-right displacement driving mechanism (2) arranged in a lower slide rail cavity (11) of the lower slide rail (1), an upper slide rail (3) movably matched with the lower slide rail (1) and fixed to the upper slide rail left-right displacement driving mechanism (2) in the middle of the length direction, a front clearance elimination mechanism (4) for making the upper slide rail (3) movably matched with the lower slide rail (1) and arranged between the front of the upper and lower slide rails (3, 1) in the length direction, and a rear clearance elimination mechanism (5) arranged between the rear of the upper and lower slide rails (3, 1) in the length direction, characterized in that: It also includes an upper slide rail anti-deformation sliding guide mechanism (6) for increasing the slide rail contact area of ​​the upper slide rail (3); the upper slide rail anti-deformation sliding guide mechanism (6) is arranged in the lower slide rail cavity (11); the lower part of the upper slide rail (3) in the longitudinal direction is supported on the upper slide rail anti-deformation sliding guide mechanism (6) and forms a sliding pair with the upper side of the upper slide rail anti-deformation sliding guide mechanism (6).

2. The automobile seat slide rail with anti-deformation function according to claim 1, characterized in that: The lower rail cavity (11) is formed on the upper side of the lower rail (1) and passes through from the left end to the right end in the length direction of the lower rail (1). The lower rail cavity (11) includes a bracket fixing cavity (111), an upper rail front folding accommodating cavity (112), an upper rail rear folding accommodating cavity (113) and an upper rail movable clearance groove (114). The bracket fixing cavity (111) is located in the middle of the lower rail (1). The upper rail front folding accommodating cavity (112) is formed by folding the lower rail front side wall (12) in the length direction of the lower rail (1) toward the bracket fixing cavity (11). The upper slide rail rear folding edge accommodating cavity (113) is formed by folding the lower slide rail rear side wall (13) in the length direction of the lower slide rail (1) in the direction of the bracket fixing cavity (11) and corresponds to the upper slide rail front folding edge accommodating cavity (112), wherein the lower slide rail front side wall (12) is formed with a lower slide rail front side wall rear flange (121) folded in the direction of the lower slide rail rear side wall (13), and the lower slide rail rear side wall (13) is formed with a lower slide rail rear side wall front flange (121) folded in the direction of the lower slide rail front side wall (12) and corresponding to the lower slide rail front side wall rear flange (121). 31), the space between the rear flange (121) of the front side wall of the lower slide rail and the front flange (131) of the rear side wall of the lower slide rail constitutes the upper slide rail movable clearance groove (114) for connecting the bracket fixing cavity (111) with the outside; the upper slide rail left-right displacement driving mechanism (2) and the upper slide rail anti-deformation sliding guide mechanism (6) are fixed in the bracket fixing cavity (111); the front side of the upper slide rail (3) in the longitudinal direction is movably accommodated in the upper slide rail front folding accommodating cavity (112), and the rear side is movably accommodated in the upper slide rail rear folding accommodating cavity (113) , and the middle part of the upper slide rail (3) in the longitudinal direction is fixed to the upper slide rail left-right displacement driving mechanism (2) in a state where it protrudes out of the upper surface of the lower slide rail (1) through the upper slide rail moving clearance groove (114); the front clearance eliminating mechanism (4) is arranged between the front side of the upper slide rail (3) and the upper slide rail front folding accommodating cavity inner wall (1121) of the upper slide rail front folding accommodating cavity (112); the rear clearance eliminating mechanism (5) is arranged between the rear side of the upper slide rail (3) and the upper slide rail rear folding accommodating cavity inner wall (1131) of the upper slide rail rear folding accommodating cavity (113).

3. The automobile seat slide rail with anti-deformation function according to claim 2, characterized in that: An upper slide rail front side folding edge (31) is formed at the lower front part of the upper slide rail (3) in the longitudinal direction, and a lower slide rail front side wall rear flange insertion groove (311) is formed between the upper slide rail front side folding edge (31) and the lower front side surface of the upper slide rail (3), and the lower slide rail front side wall rear flange insertion groove (311) is inserted into the lower slide rail front side wall rear flange insertion groove (311), and an upper slide rail rear side folding edge (32) is formed at the lower rear part of the upper slide rail (3) in the longitudinal direction, and the upper slide rail rear side folding edge (32) and A lower rail rear side wall front flange insertion groove (321) is formed between the lower rear side surfaces of the upper rail (3), the lower rail rear side wall front flange insertion groove (321) is inserted into the lower rail rear side wall front flange insertion groove (321), and the lower rail front side wall rear flange insertion groove (311) of the lower rail front side wall rear flange insertion groove (311) is opposite to the lower rail front side wall rear flange insertion groove (311) and is fixed to the bracket fixing cavity (111) of the lower rail cavity (11) of the lower rail (1). The front side of the upper slide rail anti-deformation sliding guide mechanism (6) forms a sliding pair, and the side of the lower slide rail rear side wall front flange protruding into the groove (321) of the lower slide rail rear side wall front flange protruding into the groove (321) and the rear side of the upper slide rail anti-deformation sliding guide mechanism (6) fixed in the bracket fixing cavity (111) form a sliding pair; an upper slide rail left and right displacement drive mechanism yielding opening (33) is provided in the middle of the length direction of the upper slide rail (3), The upper part of the upper slide rail left-right displacement driving mechanism (2) protrudes from the upper surface of the upper slide rail (3) at a position corresponding to the yield opening (33) of the upper slide rail left-right displacement driving mechanism; the front gap elimination mechanism (4) is arranged between the front folded edge (31) of the upper slide rail and the opposite side of the inner wall (1121) of the upper slide rail front folded edge accommodating cavity, and the rear gap elimination mechanism (5) is arranged between the rear folded edge (32) of the upper slide rail and the opposite side of the inner wall (1131) of the upper slide rail rear folded edge accommodating cavity.

4. The automobile seat slide rail with anti-deformation function according to claim 3, characterized in that: A screw left end support seat clearance hole (1111) is provided on the bottom wall of the bracket fixing cavity (111) of the lower rail cavity (11) of the lower rail (1) and is located at the left end, while a screw right end support seat fixing screw hole (1112) is provided at the right end, and a pair of foot matching holes (1113) are provided at the left and right ends of the middle part of the bottom wall of the bracket fixing cavity in the width direction; a left positioning flange insertion hole (34a) is provided on the upper rail (3) and is located at the left side of the upper rail left and right displacement drive mechanism clearance opening (33), and a left positioning flange insertion hole (34a) is provided at the left side of the upper rail left and right displacement drive mechanism clearance opening (33). A right positioning flange insertion hole (34b) is provided at the right side of the upper slide rail 33, the upper slide rail left-right displacement driving mechanism (2) is fixed in the bracket fixing cavity (111) at a position corresponding to the left end support seat concession hole (1111) of the screw rod and the right end support seat fixing screw hole (1112), the upper slide rail (3) is fixed to the upper part of the upper slide rail left-right displacement driving mechanism (2) through the left and right positioning flange insertion holes (34a, 34b); the upper slide rail anti-deformation sliding guide mechanism (6) is fixed in the bracket fixing cavity (111) with the clamping foot matching hole (1113).

5. The automobile seat slide rail with anti-deformation function according to claim 4, characterized in that: The upper slide rail left-right displacement driving mechanism (2) comprises a screw left end support seat (21), a screw right end support seat (22), a worm gear box seat (23), a worm gear box (24) and a worm gear box moving screw (25); the upper end of the screw left end support seat (21) extends upward into the bracket fixing cavity (111) from the side of the bottom wall of the bracket fixing cavity facing away from the bracket fixing cavity (111) at a position corresponding to the clearance hole (1111) of the screw left end support seat and is fixed with a screw sleeve (211); the lower end of the screw left end support seat (21) is formed with an extended flange edge (212); the surface of the extended flange edge (212) on the side facing upward is aligned with the bottom wall of the bracket cavity facing away from the bracket fixing cavity (111). The left end support seat (21) of the screw rod is in contact with one side of the bracket, wherein the portion corresponding to the left end support seat clearance hole (1111) of the screw rod is tightly matched with the left end support seat clearance hole (1111), the right end support seat (22) of the screw rod is supported in the bracket fixing cavity (111) at a position corresponding to the fixing screw hole (1112) of the right end support seat of the screw rod and is fixed by the fixing screw (222) of the right end support seat of the screw rod, and a matching threaded hole (221) of the right end of the screw rod is provided at the upper end of the right end support seat (22), and a left fixing wing (231) is formed on the upper left side of the worm gear box seat (23), and on the side of the left fixing wing (231) facing upward and corresponding to the left positioning flange insertion hole (34a) ) position to form a left positioning flange (2311), the left positioning flange (2311) penetrates into the left positioning flange insertion hole (34a) and is welded to the upper slide rail (3), the upper right side of the worm gear box seat (23) is formed with a right fixing wing (232), on the side of the right fixing wing (232) facing upward and at a position corresponding to the right positioning flange insertion hole (34b), a right positioning flange (2321) is formed, the right positioning flange (2321) penetrates into the right positioning flange insertion hole (34b) and is also welded to the upper slide rail (3), the worm gear box (24) is fixed to the middle part of the worm gear box seat (23), and the upper part of the worm gear box (24) is formed at a position corresponding to the upper slide rail (3). The position of the yielding opening (33) of the rail left-right displacement driving mechanism protrudes from the upper surface of the upper slide rail (3), and the middle part of the worm gear box moving screw (25) is threadedly matched with the worm gear box (24), so that the worm gear box (24) and the upper slide rail (3) move left or right along the worm gear box moving screw (25), and the left end of the worm gear box moving screw (25) is matched with the screw sleeve (211), and the left end of the worm gear box moving screw (25) extends to the left side of the screw left end support seat (21) and is limited by a limiting nut, and the right end of the worm gear box moving screw (25) is supported on the screw right end support seat (22) at a position corresponding to the matching threaded hole (221) of the screw right end.

6. The automobile seat slide rail with anti-deformation function according to claim 4, characterized in that: The upper slide rail anti-deformation sliding guide mechanism (6) comprises a front sliding guide rod (61), a rear sliding guide rod (62), a sliding guide rod left connecting frame (63), a sliding guide rod right connecting frame (64) and a sliding guide rod middle connecting frame (65), the front sliding guide rod (61) and the rear sliding guide rod (62) are parallel to each other in the longitudinal direction, the sliding guide rod left connecting frame (63) is welded and fixed between the left ends of the front and rear sliding guide rods (61, 62) facing downward, the sliding guide rod right connecting frame (64) is welded and fixed between the right ends of the front and rear sliding guide rods (61, 62) facing downward, and the sliding guide rod left connecting frame (63) and the sliding guide rod right connecting frame (64) are respectively The intermediate connecting frame (65) of the sliding guide rod is fixedly engaged with the said foot matching hole (1113), and is welded and fixed between the middle parts of the front and rear sliding guide rods (61, 62) facing downward, and is limited by the bottom wall of the bracket fixing cavity (111); the side of the bottom wall (3111) of the rear flange of the front side wall of the lower sliding rail protruding into the groove facing away from the side of the rear flange of the front side wall of the lower sliding rail protruding into the groove (311) and the side surface of the front sliding guide rod (61) facing upward form a sliding pair, and the side of the bottom wall (3211) of the front flange of the rear side wall of the lower sliding rail protruding into the groove facing away from the side of the front flange of the rear side wall of the lower sliding rail protruding into the groove (321) and the side surface of the rear sliding guide rod (62) facing upward form a sliding pair.

7. The automobile seat slide rail with anti-deformation function according to claim 6, characterized in that: An intermediate connecting frame boss limiting hole (1114) is provided on the bottom wall of the bracket fixing cavity (111) and at a position corresponding to the intermediate connecting frame (65) of the sliding guide rod. An intermediate connecting frame boss (651) is fixed at the bottom of the intermediate connecting frame (65) of the sliding guide rod and at a position corresponding to the intermediate connecting frame boss limiting hole (1114). The intermediate connecting frame boss (651) is inserted into the intermediate connecting frame boss limiting hole (1114). A pair of left connecting frame clamping feet (631) extend from the right side of the connecting frame (63), and the pair of left connecting frame clamping feet (631) are clamped with the pair of clamping foot matching holes (1113) located at the left end of the middle part of the width direction of the bottom wall of the bracket fixing cavity. A pair of right connecting frame clamping feet (641) extend from the right side of the right connecting frame (64) of the sliding guide rod, and the pair of right connecting frame clamping feet (641) are clamped with the pair of clamping foot matching holes (1113) located at the right end of the middle part of the width direction of the bottom wall of the bracket fixing cavity.

8. The automobile seat slide rail with anti-deformation function according to claim 6 or 7, characterized in that: A guide rod left end fixed connecting plate (66) is welded and fixed between the left ends of the front and rear sliding guide rods (61, 62), and the guide rod left end fixed connecting plate (66) is located on the left side of the sliding guide rod left connecting frame (63), while a guide rod right end fixed connecting plate (67) is welded and fixed between the right ends of the front and rear sliding guide rods (61, 62), and the guide rod right end fixed connecting plate (67) is located on the right side of the sliding guide rod right connecting frame (64).

9. The automobile seat slide rail with anti-deformation function according to claim 6, characterized in that: The surface of the front sliding guide rod (61) facing upwards and cooperating with the side of the rear flange of the front side wall of the lower rail protruding into the groove bottom wall (3111) facing away from the rear flange of the front side wall of the lower rail protruding into the groove (311) constitutes a front sliding guide rod sliding surface (611); the surface of the rear sliding guide rod (62) facing upwards and cooperating with the side of the front flange of the rear side wall of the lower rail protruding into the groove bottom wall (3211) facing away from the front flange of the rear side wall of the lower rail protruding into the groove (321) constitutes a rear sliding guide rod sliding surface (621); the front sliding guide rod sliding surface (611) and the rear sliding guide rod sliding surface (621) are arc surfaces; the rear flange of the front side wall of the lower rail protruding into the groove bottom wall (3111) is opposite to the side of the rear flange of the front side wall of the lower sliding rail protruding into the groove (311) and is formed with a front concave cavity (3112) of the bottom wall at a position corresponding to the sliding surface (611) of the front sliding guide rod. The bottom wall (3211) of the rear side wall of the lower sliding rail protruding into the groove is opposite to the side of the front flange of the rear side wall of the lower sliding rail protruding into the groove (321) and is formed with a rear concave cavity (3212) of the bottom wall at a position corresponding to the sliding surface (621) of the rear sliding guide rod. The front concave cavity (3112) of the bottom wall and the rear concave cavity (3212) of the bottom wall are concave arc-shaped cavities and respectively form sliding pairs with the sliding surface (611) of the front sliding guide rod and the sliding surface (621) of the rear sliding guide rod.

10. A car seat, characterized in that: The automobile seat slide rail with anti-deformation function as claimed in claim 1 is installed.

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