Zipper structure of automobile seat slide rail

Abstract

A zipper structure for an automotive seat slide rail belongs to the field of automotive seat accessory technology. The automotive seat slide rail includes a lower slide rail and an upper slide rail; the zipper mechanism includes a zipper body, a left-hand zipper body opening and closing mechanism, and a right-hand zipper body opening and closing mechanism with the same structure as the left-hand zipper body opening and closing mechanism. The zipper body is fixed to the opposite side of the front and rear half cover plates of the lower slide rail opening at a position corresponding to the zipper body cavity. The left-hand zipper body opening and closing mechanism includes a zipper head and a zipper slider. The zipper head cooperates with the zipper body, and the right end of the zipper head forms a double-sided constraint connection with the left end of the zipper slider, while the right end of the zipper slider is connected to the upper left end of the upper slide rail. Advantages: ensures reliable connection between the zipper head and the zipper slider, improves torsional and impact resistance; significantly reduces the size of the zipper slider; prevents external dust and foreign objects from entering the interior of the lower slide rail, ensuring smooth sliding of the upper slide rail.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive seat accessories, specifically relating to a zipper structure for an automotive seat slide rail. Background Technology

[0002] The aforementioned car seat slide rail refers to the lower slide rail, also known as the outer slide rail or stationary slide rail. The upper slide rail (also known as the "inner slide rail" or "moving slide rail") of the car seat and the lower slide rail form a sliding pair. As is known in the industry, the screws, balls, or ball retainers usually installed inside the lower slide rail of the car seat are precision transmission components for the fore-and-aft adjustment of the car seat. Foreign objects such as dust, sand, and hair can enter the interior of the lower slide rail and mix with the lubricant to form a substance with a "grinding paste effect," which increases sliding resistance, produces abnormal noises such as creaking and jamming, and in severe cases, can cause the seat to seize up, affecting the fore-and-aft adjustment function of the car seat. Zippers with dustproof functions are a key or important line of defense to ensure smooth movement throughout the entire life of the vehicle. In addition to preventing foreign objects from entering, installing zippers on the sliding rails of car seats has the following positive benefits: preventing corrosion and wear, for example, in humid or salty environments, dust with moisture can accelerate the electrochemical corrosion of the internal components of the sliding rails; improving the durability of the sliding rails, thus extending the service life of the entire seat sliding rail assembly; and enhancing the user experience, as a quiet, smooth, and silky adjustment feel is a reflection of high-quality interior components, etc.

[0003] Because car seat rail zippers offer advantages beyond those mentioned above, their inclusion in luxury sedans such as the Mercedes-Benz S-Class, BMW 7 Series, Audi A8, luxury SUVs (Porsche, Range Rover), and high-end MPVs (Toyota Alphard, Lexus LM) has become an industry consensus. In particular, this trend is now expanding to commercial vehicles (such as high-end trucks and long-distance buses), taxis, rental cars, and pickup trucks, etc., because these vehicles often operate in harsh environments such as unpaved roads, sand, and mud, where the risk of dust and mud intrusion is far higher than for ordinary road vehicles. Therefore, the protection requirements for various components, including seat rails, are also higher.

[0004] Publicly available Chinese patent documents contain technical information related to zippers for automotive seat slide rails. For example, CN222891913U recommends "a waterproof and dustproof zipper for a long slide rail of a vehicle seat." This patent does not provide structural components related to the opening and closing of the zipper (referred to as a "waterproof zipper" in the patent). A typical example is CN217791730U, which provides a "zipper structure for a seat slide rail." This patent objectively achieves the technical effect described in paragraph 0017 of its specification, but still has the following shortcomings: Firstly, since the connection between the zipper head and the zipper slider is achieved by connecting a pin hole on the connector of the zipper head to a hole on the bottom wall of the fixing groove of the zipper slider, this single-point hinge of a cylindrical pin has an inherent gap, making it prone to loosening and wear. This inevitably causes the zipper head to wobble and make abnormal noises during use, making the connection reliability difficult or even impossible to meet industry standards. Firstly, the expected requirements of the industry; secondly, due to the pin-type single-point hinge, the force is concentrated, and the resistance to torsion and impact is weak, so the reliability of long-term use cannot be guaranteed; thirdly, due to the large size and high center of gravity of the zipper slider, the inertia during frequent sliding is large, which affects the stability of the movement and may cause left and right swaying; fourthly, since the area from the top of the zipper head to the end of the zipper slider facing the zipper head is in an exposed state, the area in the zipper head that is in the opened state is still subject to the aforementioned dust, foreign objects, etc., which may damage the screw, ball, and ball retainer (also known in the industry as the "backlash elimination mechanism"). Utility Model Content

[0005] The primary objective of this invention is to provide a zipper structure for automotive seat slide rails that helps ensure ideal connection reliability between the zipper head and the zipper slider, thereby avoiding problems such as loosening, wear, shaking, and abnormal noise during use, and also enhances resistance to torsion and impact.

[0006] Another objective of this invention is to provide a zipper structure for a car seat slide rail that significantly reduces the volume of the zipper slider and lowers the center of gravity, thereby reducing inertia during frequent sliding and ensuring smooth movement.

[0007] Another objective of this invention is to provide a zipper structure for a car seat slide rail that facilitates the shielding of the area between the top of the zipper head and the top of the zipper slider facing the zipper head, thereby preventing external dust and foreign objects from entering the interior of the zipper body when it is in the zipper head-opened state.

[0008] To fulfill the primary objective of this utility model, the technical solution provided is: a zipper structure for an automotive seat slide rail, comprising a lower slide rail and an upper slide rail. A front half cover plate for the upper front portion of the lower slide rail is provided along its length, and a rear half cover plate for the upper rear portion of the lower slide rail is provided along its length. These front and rear half cover plates protect the open portion of the lower slide rail cavity. The space between the opposing sides of the front and rear half cover plates along their length constitutes the zipper body cavity. The opposing sides of the front and rear half cover plates are connected by half-cover plate clamps that hug the bottom and front and rear sides of the lower slide rail and are spaced apart. The length of the upper slide rail... The lower part of the slide rail extends into the lower slide rail cavity at a position corresponding to the zipper body cavity and forms a sliding pair with the lower slide rail, while the upper part of the upper slide rail protrudes above the zipper body cavity in the length direction; the zipper mechanism includes a zipper body, a left-hand zipper body opening and closing mechanism, and a right-hand zipper body opening and closing mechanism with the same structure as the left-hand zipper body opening and closing mechanism. The zipper body is fixed to the opposite side of the front and rear half cover plates of the lower slide rail opening at a position corresponding to the zipper body cavity. The left-hand zipper body opening and closing mechanism includes a zipper head and a zipper slider. The zipper head cooperates with the zipper body, and the right end of the zipper head forms a double-sided constraint connection with the left end of the zipper slider, while the right end of the zipper slider is connected to the upper left end of the upper slide rail.

[0009] To fulfill another objective of this utility model, the technical solution provided by this utility model is: the maximum height of the zipper slider is less than half the height of the left end of the upper slide rail protruding above the zipper body cavity in the length direction.

[0010] To further fulfill the purpose of this utility model, the technical solution provided by this utility model is as follows: a protective cover for protecting the zipper head is provided on the zipper head and at a position corresponding to the top of the zipper head. The right end of the protective cover extends to the top of the left end of the zipper slider and contacts the left end face of the upper slide rail.

[0011] In a specific embodiment of this utility model, the zipper body includes a front chain tooth and a rear chain tooth corresponding to the cavity of the zipper body. The front side of the front chain tooth in the length direction forms an integral structure with the rear side of the front half cover plate of the lower slide rail opening in the length direction. The rear side of the rear chain tooth in the length direction forms an integral structure with the front side of the rear half cover plate of the lower slide rail opening in the length direction. A front chain tooth is provided on the rear side of the front chain tooth in the length direction, and a rear chain tooth is provided on the front side of the rear chain tooth in the length direction. The zipper head cooperates with the front chain tooth and the rear chain tooth. When the zipper slider pulls the zipper head to move to the right, the zipper head causes the front and rear chain teeth to mesh with each other. When the zipper slider drives the zipper head to move to the left, the front and rear chain teeth of the zipper head separate from each other. The left or right movement of the zipper slider is driven by the upper slide rail. The bottom of the zipper slider and the upper surfaces of the front and rear chain teeth form a sliding pair.

[0012] In another specific embodiment of this utility model, the front half cover plate and the rear half cover plate of the lower slide rail opening are made of hard rubber, while the front chain toothed bar and the rear chain toothed bar are made of soft rubber. The front side of the front chain toothed bar along its length direction and the lower rear side of the front half cover plate along its length direction are thermally fused to form the integral structure, and the rear side of the rear chain toothed bar along its length direction and the lower front side of the rear half cover plate along its length direction are thermally fused to form the integral structure. The hard rubber is nylon or glass fiber reinforced nylon, and the soft rubber is a styrene-based thermoplastic elastomer, thermoplastic vulcanized rubber, or thermoplastic polyurethane elastomer.

[0013] In another specific embodiment of this utility model, a bidirectional connecting arm seat is formed on the upward-facing side of the zipper head. A bidirectional connecting arm extends from the right side of the bidirectional connecting arm seat, protruding from the right side of the zipper head in a suspended state. A bidirectional connecting head is formed at the right end of the bidirectional connecting arm. The bidirectional connecting arm and the bidirectional connecting head form a T-shaped structure with each other. A bidirectional connecting arm slot is formed above the left end of the zipper slider. A bidirectional connecting head slot is formed on the right side corresponding to the bidirectional connecting arm slot. The bidirectional connecting arm slot and the bidirectional connecting head slot form a T-shaped groove with each other. When the bidirectional connecting arm and the bidirectional connecting head are respectively engaged with the bidirectional connecting arm slot and the bidirectional connecting head slot, one end of the zipper head and one end of the zipper slider form the aforementioned double-sided constraint connection. The protective cover is connected to the bidirectional connecting arm seat and supported on the protective cover support platform formed in the middle of the zipper slider.

[0014] In another specific embodiment of this utility model, a diverter is formed on the left end face of the zipper slider and at the lower part in the height direction.

[0015] In another specific embodiment of this utility model, a protective cover connecting pin hole is provided on the bidirectional connecting head arm seat, extending from the front side to the rear side of the bidirectional connecting head arm seat. A protective cover front wall pin hole is provided on the protective cover and a protective cover rear wall pin hole is provided on the protective cover rear wall. When the protective cover is placed on the zipper head, the protective cover connecting pin hole corresponds to the front and rear wall pin holes of the protective cover, and the protective cover connecting pin is sequentially inserted into the protective cover rear wall pin hole, the protective cover connecting pin hole, and the protective cover front wall pin hole, so that the protective cover covers the zipper head from above. The right end of the protective cover is supported on the protective cover support platform of the zipper slider after passing above the bidirectional connecting head arm slot and the bidirectional connecting head slot in sequence.

[0016] In a further specific embodiment of this utility model, a front connecting arm and a rear connecting arm of the zipper slider are formed at the right end of the zipper slider. The front and rear connecting arms of the zipper slider are corresponding to each other. The space between the front and rear connecting arms of the zipper slider is formed as an upper slide rail end insertion groove. The left end of the upper slide rail is inserted into the upper slide rail end insertion groove and connected to the front and rear connecting arms of the zipper slider.

[0017] In a further specific embodiment of this utility model, a front connecting arm connecting screw hole is provided on the front connecting arm of the zipper slider, and a rear connecting arm connecting screw hole is provided on the rear connecting arm of the zipper slider at a position corresponding to the front connecting arm connecting screw hole. An upper slide rail end connecting screw hole is provided at the left end of the upper slide rail. When the left end of the upper slide rail is inserted into the upper slide rail end insertion groove, the upper slide rail end connecting screw hole corresponds to both the front connecting arm connecting screw hole and the rear connecting arm connecting screw hole. The connecting arm connecting screw passes through the rear connecting arm connecting screw hole, the upper slide rail end connecting screw hole, and the front connecting arm connecting screw hole in sequence to connect the left end of the upper slide rail to the right end of the zipper slider, and is limited by the connecting arm connecting screw limiting nut screwed to the end of the connecting arm connecting screw.

[0018] One of the technical effects of the present invention is that, by forming a double-sided constraint connection between the right end of the zipper head and the left end of the zipper slider, the ideal connection reliability between the zipper head and the zipper slider is ensured, avoiding problems such as loosening, wear, shaking, and abnormal noise during use, and also improving the resistance to torsion and impact. Secondly, by designing the maximum height of the zipper slider to be less than half the height of the upper part of the upper slide rail protruding above the zipper body cavity, the volume of the zipper slider can be significantly reduced, and the center of gravity can be lowered, thereby reducing the inertia during frequent sliding and ensuring smooth movement. Thirdly, by providing a protective cover for the zipper head at a position corresponding to its upper part, with the right end of the protective cover extending to the left end of the zipper slider and contacting the left end face of the upper slide rail, external dust and foreign objects can be prevented from entering the screw, balls, and ball retainer inside the lower slide rail from the area where the zipper head is pulled open, ensuring smooth sliding of the upper slide rail. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of part A.

[0020] In the diagram: 1. Lower slide rail, 11. Front half cover plate of the lower slide rail opening, 12. Rear half cover plate of the lower slide rail opening, 13. Lower slide rail cavity, 14. Zipper body cavity, 15. Half cover plate clamp; 2. Upper slide rail, 21. Upper slide rail end connecting screw hole; 3. Zipper body, 31. Front chain tooth, 311. Front chain tooth, 32. Rear chain tooth, 321. Rear chain tooth; 4. Left-hand zipper body opening and closing mechanism, 41. Zipper head, 411. Two-way connecting head arm seat, 4111. Two-way connecting head arm, 41111. Two-way connecting head, 4112. Protective cover connecting pin hole, 42. Zipper slider, 421. Two-way connecting head arm slot, 422. Two-way connecting head slot, 423. Protective cover support platform, 424. 4241. Front connecting arm of zipper slider; 425. Rear connecting arm of zipper slider; 426. Upper slide rail end insertion groove; 427. Connecting arm connecting screw; 4271. Connecting arm connecting screw limiting nut; 428. Diverter head; 5. Right-hand zipper body opening and closing mechanism; 6. Protective cover; 61. Front wall pin hole of protective cover; 62. Rear wall pin hole of protective cover; 63. Protective cover connecting pin; 7. Drive motor; 8. Car seat tray connecting base. Detailed Implementation

[0021] In order to better understand the technical essence and beneficial effects of this utility model, a detailed description will be given below by way of embodiments. However, the description of the embodiments is not intended to limit the solution of this utility model. Any formal but not substantive equivalent transformations made based on the concept of this utility model should be considered within the scope of the technical solution of this utility model.

[0022] In the following description, all directional or orientational concepts involving up, down, left, right, front, and back are based on the current... Figure 1 The location and state of the object are taken as examples, and therefore should not be construed as a special limitation on the technical solution provided by this utility model.

[0023] Please see Figure 1 and Figure 2 The diagram illustrates the structural system of a car seat sliding rail, consisting of a lower sliding rail 1 and an upper sliding rail 2. A front half cover plate 11 for the upper front portion of the lower sliding rail 1 is provided along its length, while a rear half cover plate 12 for the upper rear portion of the lower sliding rail 1 is provided along its length. These front and rear half covers 11 and 12 protect the open portion of the lower sliding rail cavity 13 of the lower sliding rail 1. The space between the opposing sides of the front and rear half covers 11 and 12 along their length constitutes a zipper body cavity 14. The opposing sides of the front and rear half covers 11 and 12 are supported by U-shaped half-cover clamps 15 that are spaced apart and hug the bottom and front and rear sides of the aforementioned lower sliding rail 1. The upper slide rail 2 extends into the lower slide rail cavity 13 at a position corresponding to the aforementioned zipper body cavity 14 and forms a sliding pair with the lower slide rail 1, while the upper part of the upper slide rail 2 protrudes above the zipper body cavity 14. The structural system of the zipper mechanism is shown, including a zipper body 3, a left-hand zipper body opening and closing mechanism 4, and a right-hand zipper body opening and closing mechanism 5 with the same structure as the left-hand zipper body opening and closing mechanism 4. The zipper body 3 is fixed to the opposite side of the front and rear half cover plates 11 and 12 of the aforementioned lower slide rail opening at a position corresponding to the zipper body cavity 14. It can be seen that the zipper body 3 compensates for the aforementioned zipper body cavity 14. The aforementioned left-hand zipper body opening and closing mechanism 4 includes a zipper head 41 and a zipper slider 42.

[0024] As the first technical point of the technical solution provided by this utility model: the zipper head 41 is matched with the zipper body 3, and the right end of the zipper head 41 is connected to the left end of the zipper slider 42 on both sides, while the right end of the zipper slider 42 is connected to the upper left end of the upper slide rail 2.

[0025] The aforementioned concept of constraint connection restricts the relative movement between two or more components in certain or all directions. In the structure of this utility model, it at least restricts undesirable movements such as left, right, forward, and backward movements of the zipper head 41 relative to the zipper slider 42. The concept of "half-width" in the terms "front and rear half-width cover plates 11 and 12" of the aforementioned lower slide rail opening refers to the required coverage area in the width direction relative to the upper part of the lower slide rail 1, and also includes a reasonable area extending beyond the width range of the upper part of the lower slide rail 1, like an eaves protruding to a certain extent.

[0026] exist Figure 1 The paper also shows the drive motor 7 corresponding to the middle of the upper slide rail 2 and the car seat basin connecting seat 8 located at the left and right ends of the upper slide rail 2. Since the installation method and function of these components are existing technologies and can be found in published Chinese patent documents, the applicant will not elaborate further.

[0027] Another key technical feature of the present invention is that the maximum height of the zipper slider 42 is less than half the height of the left end of the upper slide rail 2 protruding above the zipper body cavity 14, i.e., protruding above the upper surface of the zipper body 3. For example, assuming that the height of the area corresponding to the left end of the upper slide rail 2 connecting the zipper slider 42 (the distance between the upper surface of the zipper body 3 and the upper surface of the left end of the upper slide rail 2) is 30mm, then the maximum height of the zipper slider 42 is less than 15mm. This design achieves the second technical effect of lowering the center of gravity described by the applicant in the above technical effect section.

[0028] Another key technical feature of the present invention is that a protective cover 6 for protecting the zipper head 41 is provided on the aforementioned zipper head 41 and at a position corresponding to above the zipper head 41. The right end of the protective cover 6 extends above the left end of the aforementioned zipper slider 42 and contacts the left end face of the aforementioned upper slide rail 2. This design achieves the third technical effect mentioned above.

[0029] Please stay tuned. Figure 1 and Figure 2The aforementioned zipper body 3 includes a front chain tooth 31 and a rear chain tooth 32 corresponding to the aforementioned zipper body cavity 14. The front side of the front chain tooth 31 in the longitudinal direction forms an integral structure with the rear side of the front half cover plate 11 of the aforementioned lower slide rail opening in the longitudinal direction. The rear side of the rear chain tooth 32 in the longitudinal direction forms an integral structure with the front side of the rear half cover plate 12 of the aforementioned lower slide rail opening in the longitudinal direction. A front chain tooth 311 is provided on the rear side of the front chain tooth 31 in the longitudinal direction, and a rear chain tooth 321 is provided on the front side of the rear chain tooth 32 in the longitudinal direction. The zipper head 41 engages with the front chain tooth 311 and the rear chain tooth 321. When the zipper slider 42 pulls the zipper head 41 to move to the right, the zipper head 41 causes the front and rear chain teeth 311 and 321 to mesh with each other. When the zipper slider 42 drives the zipper head 41 to move to the left, the front and rear chain teeth 311 and 321 of the zipper head 41 separate from each other. The left or right movement of the zipper slider 42 is driven by the upper slide rail 2. The bottom of the zipper slider 42 and the upper surfaces of the front chain tooth 31 and the rear chain tooth 32 form a sliding pair.

[0030] Since the principle by which the zipper head 41 engages or disengages the front and rear chain teeth 311 and 321 is similar to the working mechanism of a zipper on clothing seen in daily life, the applicant believes that it is unnecessary to elaborate further.

[0031] In this embodiment, the aforementioned front half cover plate 11 and rear half cover plate 12 of the lower slide rail opening are made of hard plastic, while the aforementioned front chain tooth 31 and rear chain tooth 32 are made of soft plastic. The front side of the aforementioned front chain tooth 31 along its length direction and the lower rear side of the aforementioned front half cover plate 11 along its length direction are heat-fused to form the aforementioned integral structure, and the lower rear side of the aforementioned rear chain tooth 32 along its length direction and the lower front side of the aforementioned rear half cover plate 12 along its length direction are heat-fused to form the aforementioned integral structure. Specifically, the front chain toothed bar 31 and the rear chain toothed bar 32 are essentially soft rubber strips or soft rubber sheets, while the front half cover plate 11 and the rear half cover plate 12 of the lower slide rail opening are essentially hard rubber sheets. Therefore, the technical essence of the integrated structure formed by the thermal fusion of the front chain toothed bar 31 and the rear chain toothed bar 32 with the front and rear half cover plates 11 and 12 of the lower slide rail opening is: utilizing the mutual diffusion and entanglement of molecular chain segments at the heat and pressure contact surfaces, a strong and inseparable interface layer is formed after cooling. In this embodiment, the aforementioned hard rubber is nylon, but it can also be glass fiber reinforced nylon or other equivalent materials; the aforementioned soft rubber is a styrene-based thermoplastic elastomer, but it can also be thermoplastic vulcanized rubber, thermoplastic polyurethane elastomer, or other equivalent materials. Furthermore, based on professional knowledge, the material of the aforementioned half-cover plate clamp 15 is the same as that of the front and rear half cover plates 11 and 12 of the lower slide rail opening.

[0032] See you later Figure 1 and Figure 2 A bidirectional connecting arm seat 411 is formed on the upward-facing side of the aforementioned zipper head 41. A bidirectional connecting arm 4111 extends from the right side of the bidirectional connecting arm seat 411, protruding from the right side of the zipper head 41 in a suspended state. A bidirectional connecting head 41111 is formed at the right end of the bidirectional connecting arm 4111. The bidirectional connecting arm 4111 and the bidirectional connecting head 41111 form a T-shaped structure. A bidirectional connecting arm slot 421 is formed above the left end of the aforementioned zipper slider 42. A bidirectional connecting arm slot 421 is formed on the right side corresponding to the bidirectional connecting arm slot 421. The connector slot 422, the bidirectional connecting arm slot 421 and the bidirectional connecting head slot 422 form a T-shaped groove with each other, and when the aforementioned bidirectional connecting arm 4111 and bidirectional connecting head 41111 are respectively engaged with the aforementioned bidirectional connecting arm slot 421 and bidirectional connecting head slot 422 (i.e., "fitting"), one end of the aforementioned zipper head 41 and one end of the aforementioned zipper slider 42 form the aforementioned double-sided constraint connection; the aforementioned protective cover 6 is connected to the aforementioned bidirectional connecting arm seat 411 and is supported on the protective cover support platform 423 formed in the middle of the zipper slider 42.

[0033] Depend on Figure 1 and Figure 2 As shown, a splitter head 428 is formed on the left end face of the aforementioned zipper slider 42 and at the lower part in the height direction.

[0034] A protective cover connecting pin hole 4112 is provided on the aforementioned bidirectional connecting head arm seat 411, extending from the front side to the rear side of the bidirectional connecting head arm seat 411. A protective cover front wall pin hole 61 is provided on the aforementioned protective cover 6, and a protective cover rear wall pin hole 62 is provided on the protective cover rear wall. When the protective cover 6 is placed on the aforementioned zipper head 41, the aforementioned protective cover connecting pin hole 4112 corresponds to the aforementioned protective cover front and rear wall pin holes. Between 61 and 62, and the protective cover connecting pin 63 is sequentially inserted into the protective cover rear wall pin hole 62, the protective cover connecting pin hole 4112, and the protective cover front wall pin hole 61, so that the protective cover 6 covers the zipper head 41 above the aforementioned zipper head 41, and the right end of the protective cover 6 is supported on the protective cover support platform 423 of the aforementioned zipper slider 42 after passing above the aforementioned bidirectional connecting head arm slot 421 and the aforementioned bidirectional connecting head slot 422 in sequence.

[0035] To ensure the secure insertion of the protective cover connecting pin 63, in this embodiment, the aforementioned protective cover connecting pin holes 4112, 61, and 62 on the front and rear walls of the protective cover, all of the same size and shape, are designed as rectangular holes, or more precisely, elongated rectangular holes. Correspondingly, the aforementioned protective cover connecting pin 63 is designed with a rectangular cross-section, or more precisely, an elongated rectangular shape. When the protective cover connecting pin 63 is inserted into the aforementioned protective cover front and rear wall pin holes 61 and 62, and protective cover connecting pin hole 4112, there will be no rotation, demonstrating an excellent connection effect.

[0036] See you later Figure 1 and Figure 2 At the right end of the aforementioned zipper slider 42, there is a zipper slider front connecting arm 424 and a zipper slider rear connecting arm 425. The zipper slider front and rear connecting arms 424 and 425 correspond to each other front and back. The space between the zipper slider front and rear connecting arms 424 and 425 is formed as an upper slide rail end insertion groove 426. The left end of the aforementioned upper slide rail 2 is inserted into the upper slide rail end insertion groove 426 and connected to the zipper slider front and rear connecting arms 424 and 425.

[0037] A front connecting arm connecting screw hole 4241 is provided on the front connecting arm 424 of the aforementioned zipper slider, and a rear connecting arm connecting screw hole (not shown in the figure) is provided on the rear connecting arm 425 of the zipper slider at a position corresponding to the front connecting arm connecting screw hole 4241. An upper slide rail end connecting screw hole 21 is provided at the left end of the aforementioned upper slide rail 2. When the left end of the upper slide rail 2 is inserted into the aforementioned upper slide rail end insertion groove 426, the aforementioned upper slide rail end connecting screw hole 21 corresponds to both the aforementioned front connecting arm connecting screw hole 4241 and the rear connecting arm connecting screw hole. The connecting arm connecting screw 427 passes through the rear connecting arm connecting screw hole, the upper slide rail end connecting screw hole 21 and the front connecting arm connecting screw hole 4241 in sequence to connect the left end of the upper slide rail 2 to the right end of the aforementioned zipper slider 42, and is limited by the connecting arm connecting screw limiting nut 4271 screwed onto the end of the connecting arm connecting screw 427.

[0038] Since the technical content and overall working principle of the structure system of the car seat slide rail, including the lower slide rail 1, the upper slide rail 2, the drive motor 7, and the upper and lower slide rails 2 and 1 forming a sliding pair, are existing technologies, for example, in addition to referring to the patents mentioned in the background technology section above, you can also refer to the "Automotive Seat Automatic Adjustment Slide Rail and its Automotive Seat" published in CN11942837A, the applicant will not elaborate further.

[0039] At present Figure 1Taking the position shown as an example, when the upper slide rail 2 slides (moves) to the left, the right-side zipper body opening and closing mechanism 5 closes the front and rear chain teeth 311 and 321 on the right end of the front and rear chain teeth 31 and 32. At the same time, the left-side zipper body opening and closing mechanism 4 opens (i.e. pulls open) the front and rear chain teeth 311 and 321 on the left end of the front and rear chain teeth 31 and 32. The reverse is also true.

[0040] In summary, the technical solution provided by this utility model makes up for the shortcomings of the prior art, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A zipper structure for a car seat slide rail, the car seat slide rail including a lower slide rail (1) and an upper slide rail (2), a lower slide rail opening front half cover plate (11) is provided on the upper front side of the lower slide rail (1) in the length direction, and a lower slide rail opening rear half cover plate (12) is provided on the upper rear side of the lower slide rail (1) in the length direction, the lower slide rail opening front half cover plate (11, 12) protect the opening part of the lower slide rail cavity (13) of the lower slide rail (1), and the space between the opposite sides of the lower slide rail opening front half cover plate (11, 12) in the length direction constitutes the zipper body cavity (14), and the opposite sides of the lower slide rail opening front half cover plate (11, 12) are formed by a zipper body cavity (14) that is hugged to the bottom and front and rear sides of the lower slide rail (1) and is spaced apart. The half-cover plate is connected by a clamp (15). The lower part of the upper slide rail (2) extends into the lower slide rail cavity (13) at the position corresponding to the zipper body cavity (14) and forms a sliding pair with the lower slide rail (1). The upper part of the upper slide rail (2) protrudes above the zipper body cavity (14). The zipper mechanism includes a zipper body (3), a left-hand zipper body opening and closing mechanism (4), and a right-hand zipper body opening and closing mechanism (5) with the same structure as the left-hand zipper body opening and closing mechanism (4). The zipper body (3) is fixed to the opposite side of the front and rear half-cover plates (11, 12) of the lower slide rail opening at the position corresponding to the zipper body cavity (14). The left-hand zipper body opening and closing mechanism (4) includes a zipper head (41) and a zipper slider (42). The zipper body (3) is characterized in that: The zipper head (41) cooperates with the zipper body (3), and the right end of the zipper head (41) forms a double-sided constraint connection with the left end of the zipper slider (42), while the right end of the zipper slider (42) is connected to the upper left end of the upper slide rail (2).

2. The zipper structure of the car seat slide rail according to claim 1, characterized in that: The maximum height of the zipper slider (42) is less than half the height of the left end of the upper slide rail (2) protruding above the zipper body cavity (14) in the length direction.

3. The zipper structure of the automobile seat slide rail according to claim 1, characterized in that: A protective cover (6) for protecting the zipper head (41) is provided on the zipper head (41) and at a position corresponding to above the zipper head (41). The right end of the protective cover (6) extends above the left end of the zipper slider (42) and contacts the left end face of the upper slide rail (2).

4. The zipper structure of the automobile seat slide rail according to claim 1, 2, or 3, characterized in that: The zipper body (3) includes a front chain tooth (31) and a rear chain tooth (32) corresponding to the zipper body cavity (14). The front side of the front chain tooth (31) in the length direction forms an integral structure with the rear side of the front half cover plate (11) of the lower slide rail opening in the length direction. The rear side of the rear chain tooth (32) in the length direction forms an integral structure with the front side of the rear half cover plate (12) of the lower slide rail opening in the length direction. A front chain tooth (311) is provided on the rear side of the front chain tooth (31) in the length direction, and a rear chain tooth (321) is provided on the front side of the rear chain tooth (32) in the length direction. The zipper head (41) The zipper slider (42) engages with the front chain tooth (311) and the rear chain tooth (321), and when the zipper slider (42) pulls the zipper head (41) to move to the right, the zipper head (41) makes the front and rear chain teeth (311, 321) mesh with each other. When the zipper slider (42) drives the zipper head (41) to move to the left, the front and rear chain teeth (311, 321) of the zipper head (41) separate from each other. The left or right movement of the zipper slider (42) is driven by the upper slide rail (2). The bottom of the zipper slider (42) and the upper surfaces of the front chain tooth (31) and the rear chain tooth (32) form a sliding pair.

5. The zipper structure of the automobile seat slide rail according to claim 4, characterized in that: The front half cover plate (11) and the rear half cover plate (12) of the lower slide rail opening are made of hard rubber, while the front chain tooth (31) and the rear chain tooth (32) are made of soft rubber. The front side of the front chain tooth (31) along its length direction and the lower rear side of the front half cover plate (11) along its length direction are heat-fused to form the integral structure. The rear side of the rear chain tooth (32) along its length direction and the lower front side of the rear half cover plate (12) along its length direction are heat-fused to form the integral structure. The hard rubber is nylon or glass fiber reinforced nylon, and the soft rubber is styrene thermoplastic elastomer, thermoplastic vulcanized rubber, or thermoplastic polyurethane elastomer.

6. The zipper structure of the automobile seat slide rail according to claim 3, characterized in that: A two-way connecting arm seat (411) is formed on the upward-facing side of the zipper head (41). A two-way connecting arm (4111) extends from the right side of the two-way connecting arm seat (411) and protrudes from the right side of the zipper head (41) in a suspended state. A two-way connecting head (41111) is formed at the right end of the two-way connecting arm (41111). The two-way connecting arm (41111) and the two-way connecting head (41111) form a T-shaped structure. A two-way connecting arm slot (421) is formed above the left end of the zipper slider (42). A double-sided connecting arm slot is formed on the right side corresponding to the two-way connecting arm slot (421). The bidirectional connector head slot (422), the bidirectional connector head arm slot (421), and the bidirectional connector head slot (422) form a T-shaped groove with each other. When the bidirectional connector head arm (4111) and the bidirectional connector head (41111) are respectively engaged with the bidirectional connector head arm slot (421) and the bidirectional connector head slot (422), one end of the zipper head (41) and one end of the zipper slider (42) form the double-sided constraint connection. The protective cover (6) is connected to the bidirectional connector head arm seat (411) and supported on the protective cover support platform (423) formed in the middle of the zipper slider (42).

7. The zipper structure of the automobile seat slide rail according to claim 1, 2, or 3, characterized in that: A splitter head (428) is formed on the left end face of the zipper slider (42) and at the lower part in the height direction.

8. The zipper structure of the automobile seat slide rail according to claim 6, characterized in that: A protective cover connecting pin hole (4112) is provided on the bidirectional connecting head arm seat (411), extending from the front side to the rear side of the bidirectional connecting head arm seat (411). A protective cover front wall pin hole (61) is provided on the protective cover (6) and on the front wall of the protective cover, while a protective cover rear wall pin hole (62) is provided on the rear wall of the protective cover. When the protective cover (6) is placed on the zipper head (41), the protective cover connecting pin hole (4112) corresponds to the protective cover front and rear wall pin holes (61 and 62). The protective cover (6) is inserted between the protective cover connecting pin (63) and the protective cover connecting pin (62), the protective cover connecting pin (4112) and the protective cover front wall pin (61) in sequence, so that the protective cover (6) covers the zipper head (41) above the zipper head (41), and the right end of the protective cover (6) is supported on the protective cover support platform (423) of the zipper slider (42) after passing above the bidirectional connecting head arm slot (421) and the bidirectional connecting head slot (422) in sequence.

9. The zipper structure of the automobile seat slide rail according to claim 1, characterized in that: At the right end of the zipper slider (42), there is a front connecting arm (424) and a rear connecting arm (425) of the zipper slider. The front and rear connecting arms (424, 425) of the zipper slider are corresponding to each other. The space between the front and rear connecting arms (424, 425) of the zipper slider is formed as an upper slide rail end insertion groove (426). The left end of the upper slide rail (2) is inserted into the upper slide rail end insertion groove (426) and connected to the front and rear connecting arms (424, 425) of the zipper slider.

10. The zipper structure of the automobile seat slide rail according to claim 9, characterized in that: A front connecting arm connecting screw hole (4241) is provided on the front connecting arm (424) of the zipper slider, and a rear connecting arm connecting screw hole is provided on the rear connecting arm (425) of the zipper slider at a position corresponding to the front connecting arm connecting screw hole (4241). An upper slide rail end connecting screw hole (21) is provided at the left end of the upper slide rail (2). When the left end of the upper slide rail (2) is inserted into the upper slide rail end insertion groove (426), the upper slide rail end connecting screw hole ( 21) Corresponding to the front connecting arm connecting screw hole (4241) and the rear connecting arm connecting screw hole, the connecting arm connecting screw (427) passes through the rear connecting arm connecting screw hole, the upper slide rail end connecting screw hole (21) and the front connecting arm connecting screw hole (4241) in sequence to connect the left end of the upper slide rail (2) to the right end of the zipper slider (42) and is limited by the connecting arm connecting screw limiting nut (4271) screwed on the end of the connecting arm connecting screw (427).

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