Positive driving type automobile seat adjusting sliding rail and automobile seat with positive driving type automobile seat adjusting sliding rail

Abstract

The utility model relates to a positive driving type automobile seat adjusting slide rail and an automobile seat with the same, which comprise a lower slide rail, an upper slide rail and an upper slide rail, the lower part of the upper slide rail and the lower slide rail form a rolling pair, and the upper part extends out of the upper surface of the lower slide rail; the electric mechanism is arranged on the upper sliding rail; a positive driving type lead screw mechanism is matched with the positive driving type lead screw mechanism and is characterized in that a lower sliding rail front folding edge is formed on the upper portion of the front side of a lower sliding rail in the length direction, a front lead screw thread meshing cavity is formed in the upper portion of the lower sliding rail front folding edge, and a lower sliding rail rear folding edge is formed on the upper portion of the rear side of the lower sliding rail in the length direction. A rear lead screw thread meshing cavity is formed in the middle of the rear folded edge of the lower sliding rail, and the positive drive type lead screw mechanism is arranged in the upper sliding rail cavity, stretches out of the lead screw receding cavity and is meshed with the front lead screw thread meshing cavity and the rear lead screw thread meshing cavity at the same time. The device has the advantages that the upper sliding rail is ensured to show excellent stability in the adjusting process; and the assembling difficulty of the screw rod is reduced, the ideal assembling effect can be reflected, and the assembling quality can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle accessories, and in particular relates to an actively driven automobile seat adjustment slide rail and also to the automobile seat thereof. Background Art

[0002] As is known in the industry, the car seat slide rail is an important part of the car seat, which is not only related to the fixation of the car seat, but also plays a role in adjusting the car seat and is also related to many factors such as the safety of passengers. As for the macroscopic 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 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 and the car seat to move accordingly.

[0003] From the above description, it can be seen that since the lower slide rail is a static slide rail, that is, once installed on the vehicle, it is fixed to the vehicle floor (also called the "carriage floor"), so the reliable fixation between it and the vehicle floor is relatively strict, and in particular, it is necessary to ensure that during daily use, there will be no problems such as even slight movement, looseness, deformation, and sticking (deformation and sticking will affect the normal function of the upper slide rail or even make it impossible to adjust). Since the upper slide rail is a dynamic slide rail, once it is combined with the lower slide rail to form a sliding pair, the corresponding technical requirements are also relatively strict. For example, it is required that there is no abnormal noise during the sliding process (usually the sliding resistance of the assembly is 30-225N when it is subjected to a downward load of 75kg), there is no sticking point within the sliding adjustment stroke range, the sliding is smooth, the synchronous locking and unlocking are reliable, the adjustment accuracy is accurate, the durability and strength are excellent, etc.

[0004] A large amount of technical information related to automotive seat slides can be found in publicly available Chinese patent documents. Typically, for example, the "high-strength independent electric slide rail" recommended by CN215204537U has the following structure: It includes an upper slide rail (i.e., the "inner slide rail"), a lower slide rail (i.e., the "outer slide rail"), an electric drive mechanism installed on the upper slide rail, a worm and worm gear transmission mechanism and a lead screw and nut transmission mechanism installed inside the upper slide rail. Among them, the worm in the worm and worm gear transmission mechanism is connected to the output shaft of the electric drive mechanism (substantially a motor with forward and reverse functions). The worm meshes with the worm gear to transmit power (the worm drives the worm gear). The nut in the lead screw and nut transmission mechanism is formed by the internal thread configured inside the worm gear or is separately a nut configured inside the worm gear. The internal thread or nut inside the worm gear rotates with the worm gear. The lead screw passes through the internal thread inside the worm gear or through the nut inside the worm gear and meshes with the thread to receive power from the worm gear driven by the worm. The lead screw is connected to the lower slide rail (specifically, refer to paragraphs 0006 to 0009 of the specification of this patent); its working principle can be specifically referred to in paragraph 0094 of the specification.

[0005] According to the description of the above patent and in combination with the corresponding figures given therein, it can be seen that since the lead screw (which can also be called "ball screw" or "screw rod") is fixed in the lower slide rail groove of the lower slide rail, that is, the lead screw is arranged along the length direction of the lower slide rail groove and both ends of the lead screw are fixed to the bottom wall (bottom plate) of the lower slide rail groove through a lead screw support seat (referred to as "lead screw bracket" in the patent <paragraph 0094 of the specification>), the thread inside the aforementioned worm gear or the nut forms a thread pair with the lead screw. Therefore, this structural form has the following deficiencies: Firstly, since the lead screw is fixed and immovable, the displacement of the upper slide rail relative to the lower slide rail is essentially achieved by changing the position on the lead screw. Specifically, the flexible shaft of the electric drive mechanism installed on the upper slide rail drives the worm gear and worm transmission mechanism installed inside the upper slide rail, and the worm gear and worm transmission mechanism moves along the lead screw, causing the upper slide rail to drive the seat pan and the vehicle seat to displace accordingly. Therefore, this adjustment method of the vehicle seat displacement belongs to a passive drive method or a negative drive method. It is difficult to obtain the desired stability during the moving adjustment process in a negative drive method. For example, when the matching error between the thread inside the worm gear or the nut arranged inside the worm gear and the thread pair of the lead screw exceeds the range required by the process design, there will often be a situation of wobbling and imbalance. Secondly, due to being greatly restricted or influenced by traditional design thinking, the lead screw is installed in the lower slide rail through the aforementioned lead screw brackets corresponding to its two ends. Therefore, the installation requirements for the lead screw, such as the horizontal height in the length direction, are extremely strict. And due to the particularity of the structure of the lower slide rail itself, for example, the groove width of the lower slide rail groove is relatively narrow. Under the current equipment and technical conditions, it is still impossible to complete the installation of the lead screw in an automated manner. Therefore, it is usually installed manually by workers. Manual installation is likely to be affected by factors such as the experience, responsibility, and mood of the workers, thus affecting the installation (assembly) quality. Thirdly, since the lead screw is installed in the lower slide rail groove of the lower slide rail, it is inevitable that foreign objects, especially dust and impurities, will enter and accumulate during daily use. As a result, the thread inside the aforementioned worm gear or the nut inside the worm gear will be stuck or adhesively worn.

[0006] The carrier for the movement of the upper slide rail (referred to as "inner slide rail" in the patent) disclosed in "An Electric Slide Rail Driving Mechanism for Vehicle Seats" provided by CN116022040B is also a lead screw arranged inside the lower slide rail (referred to as "outer slide rail" in the patent). Therefore, to a certain extent, it also has the same deficiencies as those of CN215204537U mentioned above. Utility Model Content

[0007] The object of the present utility model is to provide a positive drive type automotive seat adjusting slide rail which helps to ensure that the lead screw can be changed from a static state to a dynamic state where it can rotate independently during adjustment, thereby ensuring good smoothness of the upper slide rail during the adjustment process, is conducive to abandoning the traditional setting mode of installing the lead screw in the lower slide rail groove, significantly reducing the assembly difficulty of the lead screw, achieving ideal assembly quality and excellent assembly effect, beneficial to preventing the influence on the adjustment of the upper slide rail caused by the intrusion of external dust and foreign objects into the lower slide rail groove, thus ensuring long-term adjustment reliability, facilitating the simplification of the overall structure, being convenient for manufacturing and assembly, and demonstrating economy.

[0008] Another object of the present utility model is to provide an automotive seat having a positive drive type automotive seat adjusting slide rail, and this automotive seat can fully possess the technical effects of the positive drive type automotive seat adjusting slide rail.

[0009] The object of the present utility model is achieved in the following way. A positive drive type automotive seat adjusting slide rail includes a lower slide rail, and a lower slide rail groove is formed in the length direction of the lower slide rail; an upper slide rail, the lower part in the length direction of the upper slide rail forms a rolling pair with the lower slide rail, and the upper part in the length direction of the upper slide rail protrudes out of the upper surface of the lower slide rail; an electric mechanism, which is arranged on the upper slide rail; a positive drive type lead screw mechanism, the electric mechanism extends into the upper slide rail cavity of the upper slide rail and is in transmission cooperation with the positive drive type lead screw mechanism. It is characterized in that a lower slide rail front folded edge which folds and extends towards the direction of the lower slide rail groove is formed at the upper front side in the length direction of the lower slide rail, and front lead screw thread engagement cavities are formed at intervals along the length direction of the lower slide rail front folded edge; and a lower slide rail rear folded edge which also folds and extends towards the direction of the lower slide rail groove and forms a parallel relationship with the lower slide rail front folded edge is formed at the upper rear side in the length direction of the lower slide rail, and rear lead screw thread engagement cavities corresponding to the positions of the front lead screw thread engagement cavities are formed at intervals along the length direction of the lower slide rail rear folded edge. The positive drive type lead screw mechanism is arranged in the upper slide rail cavity at the position corresponding to the lead screw relief cavity formed on the upper slide rail for communicating the upper slide rail cavity with the outside, protrudes out of the lead screw relief cavity, and meshes with the front lead screw thread engagement cavity and the rear lead screw thread engagement cavity at the same time.

[0010] In a specific embodiment of the present utility model, the left end, right end, and the upper part in the length direction of the lower slide rail groove are configured to be open; the left end, right end, and the lower part in the length direction of the upper slide rail are configured to be open; the space between the front fold of the lower slide rail and the front side wall of the lower slide rail forms the front roller cavity of the upper slide rail, and the space between the rear fold of the lower slide rail and the rear side wall of the lower slide rail forms the rear roller cavity of the upper slide rail; in the lower part of the front side wall in the length direction of the upper slide rail and located in the middle area in the length direction of the upper slide rail, there is formed an upwardly folded upper slide rail front fold that is parallel to the front side wall of the upper slide rail. The space between the upper slide rail front fold and the front side wall of the upper slide rail forms a cavity for the front fold of the lower slide rail to penetrate into. The upper slide rail front fold slidably corresponds to the front roller cavity of the upper slide rail, and at the front side of the left end and the front side of the right end of the upper slide rail front fold, a upper slide rail front roller is rotatably provided through an upper slide rail front roller shaft respectively. The upper slide rail front roller and the bottom wall of the front roller cavity of the upper slide rail form a rolling pair; in the lower part of the rear side wall in the length direction of the upper slide rail and located in the middle area in the length direction of the upper slide rail, there is formed an upwardly folded upper slide rail rear fold that is parallel to the rear side wall of the upper slide rail. The upper slide rail rear fold corresponds to the upper slide rail front fold and the space between the upper slide rail rear fold and the rear side wall of the upper slide rail forms a cavity for the rear fold of the lower slide rail to penetrate into. The upper slide rail rear fold slidably corresponds to the rear roller cavity of the upper slide rail, and at the rear side of the left end and the rear side of the right end of the upper slide rail rear fold, a upper slide rail rear roller is rotatably provided through an upper slide rail rear roller shaft respectively. The upper slide rail rear roller corresponds to the upper slide rail front roller and forms a rolling pair with the bottom wall of the rear roller cavity of the upper slide rail.

[0011] In another specific embodiment of the present utility model, the space between the opposite sides in the length direction of the front and rear folds of the lower slide rail forms a cavity for the positive drive screw mechanism to penetrate into. The positive drive screw mechanism arranged in the upper slide rail cavity corresponding to the position of the screw rod accommodation cavity meshes with the front and rear screw thread engagement cavities at the position corresponding to the cavity for the positive drive screw mechanism to penetrate into; the electric mechanism is arranged at the central position in the length direction of the upper slide rail.

[0012] In yet another specific embodiment of the present utility model, the top of the upper slide rail cavity of the upper slide rail is closed by the top wall of the upper slide rail cavity. At a position on the top wall of the upper slide rail cavity corresponding to the left end of the positive drive type lead screw mechanism, a drive motor shaft relief hole is provided; the electric mechanism includes a drive motor, a drive motor fixing base, and a gear drive screw. The drive motor is a motor with forward and reverse functions. The drive motor is fixed to the drive motor fixing base through drive motor fixing ears spaced circumferentially around the lower part of the drive motor and by means of drive motor fixing ear screws. The drive motor shaft of the drive motor faces downward and extends into the upper slide rail cavity through the drive motor shaft relief hole. The drive motor fixing base carries the drive motor and is inserted and fixed in the upper part of the upper slide rail. The gear drive screw is directly formed at the lower end of the drive motor shaft or fixed to the lower end of the drive motor shaft in the form of an independent component. The gear drive screw is in transmission cooperation with the positive drive type lead screw mechanism.

[0013] In still another specific embodiment of the present utility model, the positive drive type lead screw mechanism includes an upper cover, a lower cover, a front lead screw, and a rear lead screw. The upper and lower covers are horizontally and face-to-face cooperated with each other and fixed together. Together with the front lead screw and the rear lead screw, they are arranged in the upper slide rail cavity at a position corresponding to the lead screw relief cavity. The front lead screw and the rear lead screw are corresponding to each other front and rear. Among them, the left and right front lead screw heads of the front lead screw are respectively supported by a front lead screw head support member at the left and right ends of the lower cover. At a position on the front lead screw head and to the right of the front lead screw head support member, there is a front lead screw helical gear. The front lead screw thread formed in the middle of the front lead screw extends out in front of the lead screw relief cavity and meshes with the front lead screw thread meshing cavity. The left and right rear lead screw heads of the rear lead screw are respectively rotatably supported by a rear lead screw head support member at the left and right ends of the lower cover. At a position on the rear lead screw head and to the right of the rear lead screw head support member, there is a rear lead screw helical gear. The rear lead screw helical gear corresponds to the front lead screw helical gear. The rear lead screw thread formed in the middle of the rear lead screw extends out behind the lead screw relief cavity and meshes with the rear lead screw thread meshing cavity; at the left end of the upper cover and at a position corresponding to the gear drive screw, a gear drive screw relief hole is provided. The gear drive screw extends downward to between the front and rear lead screw helical gears at a position corresponding to the gear drive screw relief hole and meshes with the front and rear lead screw helical gears at the same time.

[0014] In still another specific embodiment of the present utility model, a pair of support member defining cavities are respectively formed at the lower left end and the lower right end of the upper cover and at positions corresponding to the front lead screw shaft head support member and the rear lead screw shaft head support member; a pair of support member supporting cavities are respectively formed at the upper left end and the upper right end of the lower cover and at positions corresponding to the front lead screw shaft head support member and the rear lead screw shaft head support member. The front lead screw shaft head support member and the rear lead screw shaft head support member are respectively supported in a pair of support member supporting cavities and are defined by the pair of support member defining cavities.

[0015] In yet another specific embodiment of the present utility model, the front lead screw shaft head support member and the rear lead screw shaft head support member are self-lubricating bushings or bearings; the front lead screw helical gear is directly formed on the front lead screw shaft head or is fixed to the front lead screw shaft head as an independent component by means of a flat key fixing method. The rear lead screw helical gear is directly formed on the rear lead screw shaft head or is fixed to the rear lead screw shaft head as an independent component by means of a flat key fixing method; the shape of the upper cover is in the shape of a certain shape, and the shape of the lower cover is

[0016] In a further specific embodiment of the present utility model, a lower slide rail seat is fixed at the bottom left end and the bottom right end in the length direction of the lower slide rail by a set of lower slide rail seat rivets distributed at intervals, and a lower slide rail seat fixing bolt hole is provided on the lower slide rail seat. A lower slide rail fixing bolt hole is provided in the lower slide rail groove of the lower slide rail. The lower slide rail fixing bolt hole corresponds to the lower slide rail seat fixing bolt hole. And in the use state, the lower slide rail together with the lower slide rail seat is fixed to the carriage floor of the vehicle by a lower slide rail fixing bolt at positions corresponding to the lower slide rail fixing bolt hole and the lower slide rail seat fixing bolt hole.

[0017] In yet a more specific embodiment of the present utility model, a seat basin connection nut seat is fixed at each of the left end and the right end in the length direction of the upper slide rail. A pair of connection nut seat insertion plates that are abutted against each other are fixed at the lower part of the seat basin connection nut seat. The pair of connection nut seat insertion plates are inserted into the upper slide rail cavity. And a clearance block insertion and folding edge is folded outwards at the lower part of each of the pair of connection nut seat insertion plates. A clearance block insertion cavity with an open upper part is formed in the middle of each of the pair of clearance block insertion and folding edges. A clearance block is inserted and fixed in the clearance block insertion cavity. The clearance block is in contact with the inner wall of the lower slide rail groove. In the use state, the vehicle seat is fixedly connected to the seat basin connection nut seat through the seat basin.

[0018] Another task of the present utility model is completed as follows. A vehicle seat is characterized by having the positive drive type vehicle seat adjusting slide rail.

[0019] One of the technical effects of the technical solution provided by the utility model is that an actively driven screw mechanism is adopted, which is arranged in the screw rod clearance cavity of the upper slide rail and protrudes out of the screw rod clearance cavity to engage with the front and rear screw rod thread engagement cavities formed on the front and rear folding edges of the lower slide rail, thereby changing the screw rod from the static state in the prior art to the dynamic state that can rotate autonomously during adjustment, thereby ensuring that the upper slide rail exhibits excellent stability during the adjustment process; secondly, since the actively driven screw rod mechanism is arranged in the screw rod clearance cavity of the upper slide rail, the traditional design mode that restricts the screw rod from rotating is changed. The state of being set in the lower rail groove of the lower rail can significantly reduce the difficulty of assembling the screw rod, and can reflect the ideal assembly effect and ensure the assembly quality; thirdly, since there is no need to set a screw rod in the lower rail groove of the lower rail, it is beneficial to prevent the situation where the adjustment of the upper rail is affected by the invasion of external dust and foreign objects into the lower rail groove, thereby ensuring the long-term adjustment reliability of the upper rail; fourthly, since the actively driven screw rod mechanism set in the screw rod yielding cavity of the upper rail has a simple structure and a small modular effect, it is convenient to manufacture and assemble and reflects economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the transmission cooperation between the gear-driven screw of the electric mechanism and the positive-driven screw mechanism;

[0022] Figure 3 for Figure 1 and Figure 2 The schematic diagram shown is a diagram of the active drive screw mechanism meshing with the front and rear screw thread engagement cavities on the front and rear folded edges of the lower lower rail. DETAILED DESCRIPTION

[0023] In order to more clearly understand the technical essence and beneficial effects of the present invention, the applicant provides a detailed description in the form of embodiments below. However, the description of the embodiments is not a limitation on 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.

[0024] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on Figure 1 The current position state is used as a reference, and therefore it cannot be understood as a special limitation on the technical solution provided by the utility model.

[0025] See also Figures 1 to 3, showing a lower rail 1, in which a lower rail groove 11 (also called "lower rail cavity", the same below) is formed in the length direction of the lower rail 1, showing an upper rail 2, the lower part of the upper rail 2 in the length direction forms a rolling pair with the lower rail 1, and the upper part of the upper rail 2 in the length direction protrudes out of the upper surface of the lower rail 1, that is, the upper surface of the upper rail groove 11; showing an electric mechanism 3, which is arranged on the aforementioned upper rail 2; showing an actively driven screw mechanism 4, the aforementioned electric mechanism 3 extends into the upper rail cavity 21 of the upper rail 2 and cooperates with the aforementioned actively driven screw mechanism 4 in transmission.

[0026] The technical key points of the technical solution provided by the utility model are as follows: a front folded edge 12 of the lower rail 1 is formed on the upper front part in the longitudinal direction of the lower rail 1, which is folded toward the direction of the lower rail groove 11, and a front screw thread engagement cavity 121 (also referred to as a front screw thread engagement groove or hole, the same below) is formed on the front folded edge 12 of the lower rail and along the longitudinal direction of the front folded edge 12 of the lower rail at equal intervals and by stamping, and a rear folded edge 121 of the lower rail 1 is formed on the upper rear part in the longitudinal direction of the lower rail 1, which is also folded toward the direction of the lower rail groove 11 and is parallel to the front folded edge 12 of the lower rail in the longitudinal direction. The side 13, on the rear folded edge 13 of the lower slide rail and along the length direction of the rear folded edge of the lower slide rail, a rear screw thread engagement cavity 131 (also referred to as a rear screw thread engagement groove or hole, the same below) corresponding to the aforementioned front screw thread engagement cavity 121 is formed in a stamping manner at an equidistant interval state, and the aforementioned actively driven screw mechanism 4 is arranged in the aforementioned upper slide rail cavity 21 at a position corresponding to the screw rod clearance cavity 22 opened on the upper slide rail 2 for making the aforementioned upper slide rail cavity 21 communicate with the outside world, and the aforementioned screw rod clearance cavity 22 is extended out and engaged with the aforementioned front screw rod thread engagement cavity 121 and the rear screw rod thread engagement cavity 131 at the same time. The concept of making the upper slide rail cavity 21 communicate with the outside world mentioned here means that the upper slide rail cavity 21 is in communication with the lower slide rail groove 11 at a position corresponding to the screw rod clearance cavity 22, that is, the part of the screw rod clearance cavity 22 of the upper slide rail cavity 21 is in communication with the lower slide rail groove 11.

[0027] The applicant needs to explain in particular that: according to professional common sense, the structure of the actively driven car seat adjustment slide rail described in the utility model undoubtedly has a pair of identical structures. Figures 1 to 3 Although only one of the pair is mentioned in the text, it will not confuse the understanding of those skilled in the art. Further understanding can be obtained by reading CN113320450B (an electric slide rail for a car seat), CN113335151B (an electric slide rail device for a car seat) and CN11602240B (a driving mechanism for an electric slide rail for a vehicle track) and combining the principle of analogy.

[0028] Please focus on Figure 1 , the left end, right end, and upper part in the length direction of the aforementioned lower slide rail groove 11 are open; the left end, right end, and lower part in the length direction of the aforementioned upper slide rail 2 are open; the space between the front folding edge 12 of the lower slide rail 1 of the aforementioned lower slide rail 1 and the front side wall of the lower slide rail 1 constitutes the front roller cavity 14a of the upper slide rail, and the space between the rear folding edge 13 of the lower slide rail 1 of the aforementioned lower slide rail 1 and the rear side wall of the lower slide rail 1 constitutes the rear roller cavity 14b of the upper slide rail; in the lower part of the front side wall in the length direction of the aforementioned upper slide rail 2 and in the middle area in the length direction of the upper slide rail 2, there is formed an upwardly folded upper slide rail front folding edge 23 that is parallel to the front side wall of the upper slide rail 2. The space between the upper slide rail front folding edge 23 and the front side wall of the upper slide rail 2 constitutes a lower slide rail front folding edge insertion cavity 231 for the aforementioned lower slide rail front folding edge 12 to penetrate. The upper slide rail front folding edge 23 slidably corresponds to the aforementioned front roller cavity 14a of the upper slide rail, and at the front side of the left end and the front side of the right end of the upper slide rail front folding edge 23, there is rotatably provided an upper slide rail front roller 232 through an upper slide rail front roller shaft 2321 respectively. The upper slide rail front roller 232 forms a rolling pair with the bottom wall of the aforementioned front roller cavity 14a of the upper slide rail; in the lower part of the rear side wall in the length direction of the aforementioned upper slide rail 2 and in the middle area in the length direction of the upper slide rail 2, there is formed an upwardly folded upper slide rail rear folding edge 24 that is parallel to the rear side wall of the upper slide rail 2. The upper slide rail rear folding edge 24 corresponds to the aforementioned upper slide rail front folding edge 23 and the space between the upper slide rail rear folding edge 24 and the rear side wall of the upper slide rail 2 constitutes a lower slide rail rear folding edge cavity 241 for the aforementioned lower slide rail rear folding edge 13 to penetrate. The upper slide rail rear folding edge 24 slidably corresponds to the aforementioned rear roller cavity 14b of the upper slide rail, and at the rear side of the left end and the rear side of the right end of the upper slide rail rear folding edge 24, there is rotatably provided an upper slide rail rear roller 242 through an upper slide rail rear roller shaft 2421 respectively. The upper slide rail rear roller 242 corresponds to the aforementioned upper slide rail front roller 232 and forms a rolling pair with the bottom wall of the aforementioned rear roller cavity 14b of the upper slide rail.

[0029] As shown by Figure 1 , the space between the opposite sides in the length direction of the aforementioned front and rear folding edges 12 and 13 of the lower slide rail constitutes an active drive type lead screw mechanism insertion cavity 15. The active drive type lead screw mechanism 4 provided in the aforementioned upper slide rail cavity 21 corresponding to the position of the aforementioned lead screw relief cavity 22 is simultaneously engaged with the aforementioned front and rear lead screw thread engagement cavities 121 and 131 at the position corresponding to the aforementioned active drive type lead screw mechanism insertion cavity 15; the aforementioned electric mechanism 3 is provided at the central position in the length direction of the aforementioned upper slide rail 2.

[0030] Continue to see Figures 1 to 3, the top of the upper slide rail cavity 21 of the upper slide rail 2 is closed by the top wall 211 of the upper slide rail cavity. At a position on the top wall 211 of the upper slide rail cavity corresponding to the left end of the above-mentioned positive drive screw mechanism 4, a driving motor shaft relief hole 2111 is provided; the above-mentioned electric mechanism 3 includes a driving motor 31, a driving motor fixing seat 32 and a gear driving screw 33. The driving motor 31 is a motor with forward and reverse functions. The driving motor 31 is fixed to the driving motor fixing seat 32 through driving motor fixing ears 312 spaced circumferentially around the lower part of the driving motor 31 and by means of driving motor fixing ear screws 3121. The driving motor shaft 311 of the driving motor 31 faces downward and extends into the above-mentioned upper slide rail cavity 21 through the above-mentioned driving motor shaft relief hole 2111. The driving motor fixing seat 32 carries the above-mentioned driving motor 31 and is inserted and embedded in the upper part of the above-mentioned upper slide rail 2 and is preferably fixed to the upper slide rail 2 by welding. In this embodiment, the gear driving screw 33 is directly formed at the lower end of the above-mentioned driving motor shaft 311 or is fixed to the lower end of the driving motor shaft 311 in the form of an independent component. The gear driving screw 33 is in transmission cooperation with the above-mentioned positive drive screw mechanism 4.

[0031] The applicant needs to clarify that: if the above-mentioned gear driving screw 33 is processed into an independent component and then fixed to the driving motor shaft 311 by means of a flat key fixing method or other similar methods, then it should be regarded as an equivalent form rather than a substantial change, and still belongs to the technical connotation scope disclosed by the present utility model. In addition, the above-mentioned gear driving screw 33 can be understood as a worm, and accordingly, the front and rear screw bevel gears 432 and 442 mentioned below can be understood as worm wheels. Also, if a gear is reasonably arranged at the end of the driving motor shaft 311, that is, a motor shaft gear is arranged, and the two gears evolved from the front and rear screw bevel gears 432 and 442 with slight modifications are simultaneously driven by this one motor shaft gear, then it is also possible.

[0032] As Figure 1 shown, lubricating oil injection holes 2112 with a quantity not limited by the quantity shown in the figure are also spacedly provided on the above-mentioned top wall 2111 of the upper slide rail cavity.

[0033] The power supply of the aforementioned drive motor 31 is provided by the vehicle on-board power supply of the automobile. This power supply converts the electrical energy of the automobile into the DC power supply required by the drive motor 31, has stable voltage and current characteristics, and can provide reliable power support for the drive motor. In addition, the design of the electric seat takes into account various factors such as safety and functionality. For a pair of positive drive type automobile seat adjustment slide rails, there is a pair of drive motors 31. Each drive motor 31 has its specific functions and control circuits, and can detect and process in a timely manner. Generally speaking, in general, the drive motors 31 of each of a pair of automobile seat slide rails are not connected in series in terms of power supply, but precise control is achieved through independent power supplies and control circuits.

[0034] Please pay special attention to Figure 2 and in combination with Figure 1 and Figure 3 As described above, the positive drive type lead screw mechanism 4 includes an upper cover 41, a lower cover 42, a front lead screw 43 and a rear lead screw 44. The upper and lower covers 41 and 42 are horizontally and face-to-face cooperated with each other and are preferably fixed to each other by screws (not shown in the figure). Together with the front lead screw 43 and the rear lead screw 44, they are arranged in the upper slide rail cavity 21 at a position corresponding to the aforementioned lead screw relief cavity 22. The front lead screw 43 and the rear lead screw 44 correspond to each other front and back. Among them, the front lead screw heads 431 (i.e., the front lead screw heads) at the left and right ends of the front lead screw 43 are respectively supported by a front lead screw head support member 4311 at the left and right ends of the lower cover 42. At the left end of the front lead screw head 431, that is, at a position on the left end of the front lead screw head 431 and on the right side of the aforementioned front lead screw head support member 4311, there is a front lead screw helical gear 432. The front lead screw thread 433 formed in the middle of the front lead screw 43 extends out in front of the aforementioned lead screw relief cavity 22 and meshes with the aforementioned front lead screw thread meshing cavity 121 (i.e., they form a meshing pair with each other). The rear lead screw heads 441 (i.e., the rear lead screw heads) at the left and right ends of the rear lead screw 44 are respectively rotatably supported by a rear lead screw head support member 4411 at the left and right ends of the lower cover 42. At the left end of the rear lead screw head 441, that is, at a position on the left end of the rear lead screw head 441 and on the right side of the aforementioned rear lead screw head support member 4411, there is a rear lead screw helical gear 442. The rear lead screw helical gear 442 corresponds to the aforementioned front lead screw helical gear 432. The rear lead screw thread 443 formed in the middle of the rear lead screw 44 extends out behind the aforementioned lead screw relief cavity 22 and meshes with the aforementioned rear lead screw thread meshing cavity 131; at the left end of the aforementioned upper cover 41 and at a position corresponding to the aforementioned gear drive screw 33, there is a gear drive screw relief hole 412. The aforementioned gear drive screw 33 extends downward to between the front and rear lead screw helical gears 432 and 442 at a position corresponding to the aforementioned gear drive screw relief hole 412 and meshes with the front and rear lead screw helical gears 432 and 442 at the same time.

[0035] At the lower left end and the lower right end of the aforementioned upper cover 41 and at positions corresponding to the aforementioned front lead screw head support 4311 and the rear lead screw head support 4411, a pair of support member limiting cavities 411 are respectively formed. Figure 1 As shown; at the upper left end and the upper right end of the aforementioned lower cover 42 and at positions corresponding to the aforementioned front lead screw head support 4311 and the rear lead screw head support 4411, a pair of support member support cavities 421 are respectively formed. The aforementioned front lead screw head support 4311 and the rear lead screw head support 4411 are respectively supported in a pair of support member support cavities 421 and are limited by the aforementioned pair of support member limiting cavities 411.

[0036] In this embodiment, the aforementioned front lead screw head support 4311 and the rear lead screw head support 4411 are self-lubricating bushings. However, if bearings are used to replace the self-lubricating bushings, it should be regarded as an equivalent technical means and still belong to the technical connotation scope disclosed by the present utility model; in this embodiment, the aforementioned front lead screw helical gear 432 is directly formed on the aforementioned front lead screw head 431, but it can also be fixed on the front lead screw head 431 by a flat key fixing method or other similar methods with an independent component. The aforementioned rear lead screw helical gear 442 is also directly formed on the aforementioned rear lead screw head 441, but it can also be fixed on the rear lead screw head 441 by a flat key fixing method or other similar methods with an independent component; the shape seen from the front side of the aforementioned upper cover 41 is in a shape of character.

[0037] After the aforementioned front lead screw 43 and the rear lead screw 44 are rotatably supported on the aforementioned lower cover 42 (which can also be called "lead screw support seat"), then the upper cover 41 (which can also be called "lead screw limiting seat") is opposed to the lower cover 42 (i.e., face-to-face mating), and then the upper and lower covers 41, 42 are fixed to each other by cover fixing screws (not shown in the figure) fitted at the central positions of the left end and the right end of the upper cover 41.

[0038] According to professional common sense, the pitch (distance between adjacent threads) of the aforementioned front lead screw thread 433 is adapted to the distance between the aforementioned two adjacent front lead screw thread engagement cavities 121. Of course, the width of the front lead screw thread 433 and the width of the front lead screw thread engagement cavity 121 are also adapted to each other. Since the respective distances between the rear lead screw 44 and the rear lead screw thread engagement cavity 131 and the width of the rear lead screw thread 443 are the same by analogy, they will not be elaborated here.

[0039] By Figure 1 and Figure 3As shown in the figure, a lower slide rail base 16 is fixedly mounted at the bottom of the left end and the bottom of the right end in the length direction of the foregoing lower slide rail 1 by a set of lower slide rail base rivets 161 distributed at intervals. A lower slide rail base fixing bolt hole 162 is formed in the lower slide rail base 16, and a lower slide rail fixing bolt hole 17 is formed in the lower slide rail groove 11 of the lower slide rail 1. The lower slide rail fixing bolt hole 17 corresponds to the foregoing lower slide rail base fixing bolt hole 162. In the use state, the foregoing lower slide rail 1 together with the foregoing lower slide rail base 16 is fixed to the carriage floor of the vehicle by a lower slide rail fixing bolt 171 at a position corresponding to the lower slide rail fixing bolt hole 17 and the lower slide rail base fixing bolt hole 162.

[0040] As Figure 1 As shown in the figure, a seat basin connection nut seat 25 is fixedly mounted at the left end and the right end in the length direction of the foregoing upper slide rail 2. A pair of connection nut seat insertion plates 251 that are abutted against each other are fixedly mounted at the lower part of the seat basin connection nut seat 25. The pair of connection nut seat insertion plates 251 are inserted and matched with the foregoing upper slide rail cavity 21. A clearance elimination block insertion flange 2511 is extended outward at the lower part of each of the pair of connection nut seat insertion plates 251. An upper-open clearance elimination block insertion cavity 25111 is formed in the middle of each of the pair of clearance elimination block insertion flanges 2511. A clearance elimination block 25112 is inserted and fixedly mounted in the clearance elimination block insertion cavity 25111. The clearance elimination block 25112 is in contact with, that is, abuts against, the inner wall of the foregoing lower slide rail groove 11. In the use state, the vehicle seat is fixedly connected to the foregoing seat basin connection nut seat 25 through a seat basin.

[0041] The vehicle seat described in the present utility model has an actively driven vehicle seat adjustment slide rail equipped with the foregoing structure.

[0042] When the position of the car seat not shown in the figure is to be adjusted, such as moving it to the right, the passenger operates the control button usually arranged on the side or below the car seat to operate the drive motor 31, and the drive motor shaft 311 drives the gear drive screw 33 with a worm effect. Since the gear drive screw 33 is engaged with the front screw bevel gear 432 with a worm gear effect and the rear screw bevel gear 442 with a worm gear effect at the same time, when the gear drive screw 33 drives the front and rear screw bevel gears 432 and 442 at the same time, the front and rear screws 43 and 44 rotate. Specifically, the front and rear screw threads 433 and 443 are respectively in engagement with the front and rear screw thread engagement cavities 121 and 131, and move along the front and rear folding edges 12 and 13 of the lower rail 1, thereby driving the upper rail 2 and the drive mechanism 3 and the seat basin connecting nut seat 25 provided with the upper rail 2 as a carrier to move to the right accordingly, and the seat basin connecting nut seat 25 drives the seat basin (not shown in the figure) and the car seat provided with the seat basin as a carrier to move to the right accordingly, and after moving to the right to the appropriate degree that the seat occupant feels or requires, the aforementioned control button is released, and the car seat stays at the adjusted position. If the upper rail 2 needs to be adjusted in the opposite direction, such as to the left, then the aforementioned control button is operated in the opposite direction (such as toggling in the opposite direction) to make the rotation direction of the aforementioned drive motor 31 opposite to the aforementioned, and the opposite process is followed until the car seat is adjusted to the left to the degree that the seat occupant feels comfortable. Assuming that the aforementioned rightward adjustment is the forward adjustment and the leftward adjustment is the backward adjustment, the car seat can then be adjusted forward or backward as required.

[0043] In summary, the technical solution provided by the utility model 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 positive drive type automotive seat adjustment slide rail, comprising a lower slide rail (1), a lower slide rail groove (11) being formed in the length direction of the lower slide rail (1); an upper slide rail (2), the lower part of the length direction of the upper slide rail (2) forming a rolling pair with the lower slide rail (1), and the upper part of the length direction of the upper slide rail (2) protruding out of the upper surface of the lower slide rail (1); an electric mechanism (3), the electric mechanism (3) being arranged on the upper slide rail (2); a positive drive type lead screw mechanism (4), the electric mechanism (3) extending into the upper slide rail cavity (21) of the upper slide rail (2) and being in transmission cooperation with the positive drive type lead screw mechanism (4), characterized in that: On the upper front side in the length direction of the lower slide rail (1), a lower slide rail front folding edge (12) that folds and extends towards the direction of the lower slide rail groove (11) is formed. On this lower slide rail front folding edge (12) and at intervals along the length direction of the lower slide rail front folding edge (12), front lead screw thread engagement cavities (121) are formed. And on the upper rear side in the length direction of the lower slide rail (1), a lower slide rail rear folding edge (13) that also folds and extends towards the direction of the lower slide rail groove (11) and forms a parallel relationship with the lower slide rail front folding edge (12) is formed. On this lower slide rail rear folding edge (13) and at intervals along the length direction of the lower slide rail rear folding edge (13), rear lead screw thread engagement cavities (131) whose positions correspond to those of the front lead screw thread engagement cavities (121) are formed. The positive drive lead screw mechanism (4) is arranged in the upper slide rail cavity (21) at a position corresponding to a lead screw relief cavity (22) formed on the upper slide rail (2) for communicating the upper slide rail cavity (21) with the outside, extends out of the lead screw relief cavity (22), and engages with both the front lead screw thread engagement cavities (121) and the rear lead screw thread engagement cavities (131).

2. The positive drive type vehicle seat adjustment slide rail according to claim 1, wherein: The left end, right end and upper part of the length direction of the lower rail groove (11) are open; the left end, right end and lower part of the length direction of the upper rail (2) are open; the space between the lower rail front fold (12) of the lower rail (1) and the front side wall of the lower rail (1) is formed as the upper rail front roller cavity (14a), and the space between the lower rail rear fold (13) of the lower rail (1) and the rear side wall of the lower rail (1) is formed as the upper rail rear roller cavity (14b); at the lower part of the front side wall of the upper rail (2) in the length direction, the space between the lower rail rear fold (13) of the lower rail (1) and the rear side wall of the lower rail (1) is formed as the upper rail rear roller cavity (14b); The upper slide rail (2) is provided with an upper slide rail front folding edge (23) which is folded upward and parallel to the front side wall of the upper slide rail (2) and is located in the middle area of ​​the upper slide rail (2) in the longitudinal direction. The space between the upper slide rail front folding edge (23) and the front side wall of the upper slide rail (2) is provided as a lower slide rail front folding edge insertion cavity (231) for the lower slide rail front folding edge (12) to be inserted into. The upper slide rail front folding edge (23) is slidably corresponding to the upper slide rail front roller cavity (14a) and is respectively provided with an upper slide rail front roller cavity (14a) at the left front side and the right front side of the upper slide rail front folding edge (23). The wheel axle (2321) is rotatably provided with an upper slide rail front roller (232), and the upper slide rail front roller (232) and the bottom wall of the upper slide rail front roller cavity (14a) form a rolling pair; at the lower part of the rear side wall of the upper slide rail (2) in the longitudinal direction and located in the middle area of ​​the upper slide rail (2) in the longitudinal direction, an upper slide rail rear folding edge (24) is formed which is folded upward and parallel to the rear side wall of the upper slide rail (2), and the upper slide rail rear folding edge (24) corresponds to the upper slide rail front folding edge (23) and is parallel to the rear side wall of the upper slide rail (2). The space between the two sides is formed into a lower rail rear folding edge cavity (241) for the lower rail rear folding edge (13) to enter, the upper rail rear folding edge (24) slidably corresponds to the upper rail rear roller cavity (14b), and an upper rail rear roller (242) is rotatably provided on the left rear side and the right rear side of the upper rail rear folding edge (24) through an upper rail rear roller shaft (2421), and the upper rail rear roller (242) corresponds to the upper rail front roller (232) and forms a rolling pair with the bottom wall of the upper rail rear roller cavity (14b).

3. The positive drive type vehicle seat adjustment slide rail according to claim 1, characterized in that: The space between the opposite sides of the front and rear folding edges (12, 13) of the lower slide rail in the length direction constitutes an actively driven screw mechanism insertion cavity (15); the actively driven screw mechanism (4) arranged in the upper slide rail cavity (21) at a position corresponding to the screw rod clearance cavity (22) is simultaneously engaged with the front and rear screw rod thread engagement cavities (121, 131) at a position corresponding to the actively driven screw mechanism insertion cavity (15); and the electric mechanism (3) is arranged at a central position in the length direction of the upper slide rail (2).

4. The positive drive type vehicle seat adjustment slide rail according to claim 3, wherein: The top of the upper slide rail cavity (21) of the upper slide rail (2) is closed by the top wall (211) of the upper slide rail cavity. A drive motor shaft relief hole (2111) is provided on the top wall (211) of the upper slide rail cavity at a position corresponding to the left end of the positive drive screw mechanism (4). The electric mechanism (3) includes a drive motor (31), a drive motor fixing base (32), and a gear drive screw (33). The drive motor (31) is a motor with forward and reverse functions. The drive motor (31) is fixed to the drive motor fixing base (32) through drive motor fixing lugs (312) that are circumferentially spaced around the lower part of the drive motor (31) and by means of drive motor fixing lug screws (3121). The drive motor shaft (311) of the drive motor (31) faces downward and extends into the upper slide rail cavity (21) through the drive motor shaft relief hole (2111). The drive motor fixing base (32) carries the drive motor (31) and is inserted and fixed in the upper part of the upper slide rail (2). The gear drive screw (33) is directly formed at the lower end of the drive motor shaft (311) or is fixed to the lower end of the drive motor shaft (311) as an independent component. The gear drive screw (33) is in transmission cooperation with the positive drive screw mechanism (4).

5. The positive drive type vehicle seat adjustment slide rail according to claim 4, characterized in that: The positive driving lead screw mechanism (4) includes an upper cover (41), a lower cover (42), a front lead screw (43) and a rear lead screw (44). The upper and lower covers (41, 42) are fitted face to face in a horizontal state and fixed to each other. Together with the front lead screw (43) and the rear lead screw (44), they are arranged in the upper slide rail cavity (21) at a position corresponding to the lead screw relief cavity (22). The front lead screw (43) and the rear lead screw (44) are arranged front and rear corresponding to each other. Among them, the front lead screw heads (431) at the left and right ends of the front lead screw (43) are respectively supported on the left and right ends of the lower cover (42) through a front lead screw head support member (4311). On the front lead screw head (431) and at a position on the right side of the front lead screw head support member (4311), there is a front lead screw helical gear (432). The front lead screw thread (433) formed in the middle of the front lead screw (43) extends out in front of the lead screw relief cavity (22) and meshes with the front lead screw thread meshing cavity (121). The rear lead screw heads (441) at the left and right ends of the rear lead screw (44) are respectively rotatably supported on the left and right ends of the lower cover (42) through a rear lead screw head support member (4411). On the rear lead screw head (441) and at a position on the right side of the rear lead screw head support member (4411), there is a rear lead screw helical gear (442). The rear lead screw helical gear (442) corresponds to the front lead screw helical gear (432). The rear lead screw thread (443) formed in the middle of the rear lead screw (44) extends out behind the lead screw relief cavity (22) and meshes with the rear lead screw thread meshing cavity (131). At the left end of the upper cover (41) and at a position corresponding to the gear driving screw (33), there is a gear driving screw relief hole (412). The gear driving screw (33) extends downward to between the front and rear lead screw helical gears (432, 442) at a position corresponding to the gear driving screw relief hole (412) and meshes with the front and rear lead screw helical gears (432, 442) simultaneously.

6. The positive drive type vehicle seat adjustment slide rail according to claim 5, wherein: At the lower left and lower right ends of the upper cover (41) and at positions corresponding to the front lead screw head support member (4311) and the rear lead screw head support member (4411), a pair of support member limiting cavities (411) are respectively formed. At the upper left and upper right ends of the lower cover (42) and at positions corresponding to the front lead screw head support member (4311) and the rear lead screw head support member (4411), a pair of support member support cavities (421) are respectively formed. The front lead screw head support member (4311) and the rear lead screw head support member (4411) are respectively supported in a pair of support member support cavities (421) and limited by the pair of support member limiting cavities (411).

7. The positive drive type vehicle seat adjustment slide rail according to claim 6, characterized in that: The front lead screw shaft head support (4311) and the rear lead screw shaft head support (4411) are self-lubricating bushings or bearings; the front lead screw helical gear (432) is directly formed on the front lead screw shaft head (431) or is fixed to the front lead screw shaft head (431) as an independent component by means of a flat key fixation method, and the rear lead screw helical gear (442) is directly formed on the rear lead screw shaft head (441) or is fixed to the rear lead screw shaft head (441) as an independent component by means of a flat key fixation method; the shape of the upper cover (41) is -shaped, while the shape of the lower cover (42) is -shaped.

8. The positive drive type vehicle seat adjustment slide rail according to claim 1 or 2, characterized in that: At the bottom of the left end and the bottom of the right end in the length direction of the lower slide rail (1), a lower slide rail seat (16) is fixed by a set of lower slide rail seat rivets (161) distributed at intervals, and a lower slide rail seat fixing bolt hole (162) is formed in the lower slide rail seat (16). A lower slide rail fixing bolt hole (17) is formed in the lower slide rail groove (11) of the lower slide rail (1). The lower slide rail fixing bolt hole (17) corresponds to the lower slide rail seat fixing bolt hole (162). And in the use state, the lower slide rail (1) together with the lower slide rail seat (16) is fixed to the car body floor by a lower slide rail fixing bolt (171) at the positions corresponding to the lower slide rail fixing bolt hole (17) and the lower slide rail seat fixing bolt hole (162).

9. The positive drive type vehicle seat adjusting slide rail according to claim 2, wherein: At the left end and the right end in the length direction of the upper slide rail (2), a seat basin connection nut seat (25) is fixed respectively. At the lower part of the seat basin connection nut seat (25), a pair of connection nut seat insertion plates (251) that are abutted against each other are fixed. The pair of connection nut seat insertion plates (251) are inserted and matched with the upper slide rail cavity (21). And at the lower part of the pair of connection nut seat insertion plates (251), a clearance elimination block insertion and folding edge (2511) is extended outwards respectively. At the middle part of the pair of clearance elimination block insertion and folding edges (2511), an upper-open clearance elimination block insertion cavity (25111) is formed respectively. A clearance elimination block (25112) is inserted and fixed in the clearance elimination block insertion cavity (25111). The clearance elimination block (25112) is in contact with the inner wall of the lower slide rail groove (11). In the use state, the car seat is fixedly connected to the seat basin connection nut seat (25) through the seat basin.

10. An automotive seat, characterized in that: There is a positive drive type car seat adjusting slide rail as described in claim 1.

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