A zipper structure for convenient engagement on a seat slide

Abstract

The present invention relates to the field of seat slides, and specifically discloses a zipper structure for facilitating engagement on a seat slide, including a zipper head, zipper teeth, a zipper guide block, and an upper rail. Two zipper teeth pass through the interior of the zipper head, and two zipper heads are respectively arranged at both ends of the upper rail. One end of the zipper guide block is connected to the zipper head, and the other end is fixedly connected to the upper rail. A guiding convex block abutting against the zipper head is provided at the front end of the zipper guide block. The zipper guide block is provided with a stepped guiding platform, a guiding sliding surface, and a sliding platform from top to bottom. Two guiding platforms and two guiding sliding surfaces are respectively arranged on both sides of the zipper guide block. A guiding ridge line is formed at the junction of the guiding platform and the guiding sliding surface. An angle not greater than 60° is formed between the extension lines of the two guiding ridge lines and the guiding convex block. The zipper teeth enter the zipper head along the guiding ridge line through the guiding convex block. The invention reduces the friction between the zipper teeth and the zipper head, and ensures that the zipper head engages the zipper teeth during the high-speed sliding of the seat.

Description

Technical Field

[0001] The present invention relates to the field of seat slides, and particularly to a zipper structure fitting for seat slides. Background Art

[0002] A seat slide mainly consists of an upper rail and a lower rail. The lower rail is relatively long, while the upper rail is relatively short, and the upper rail slides relative to the lower rail. Since the upper rail cannot completely cover the lower rail, foreign objects are likely to fall into the hollow area of the lower rail from above, affecting the sliding performance of the slide. Especially when foreign objects fall on the lead screw, it will shorten the service life of the slide, and may even cause the slide to be blocked, resulting in abnormal operation of the slide. To solve the above problems, a zipper structure is designed on the slide to avoid the risk of foreign objects falling into the track. By installing a zipper on the lower rail and a zipper head at each end of the upper rail, the zipper teeth in the upper rail area are separated, and the other areas are closed by the zipper teeth. At present, due to the width of the upper rail being restricted by other structural dimensions, the width of the upper rail is generally more than 2 cm. At the same time, since the upper rail is driven by a motor for fully automated sliding, if the two zipper teeth are separated and located on both sides of the upper rail respectively, it is likely to cause the two zipper teeth to form an excessive angle. Since the seat is sliding at a high speed, it is easy to have a jamming situation when the zipper teeth are engaged, and the zipper head cannot be adjusted autonomously.

[0003] The technical problem to be solved by this application is: how to solve the problem that the excessive angle formed by the two zipper teeth affects the engagement of the zipper teeth. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a zipper structure for convenient engagement on a seat slide.

[0005] The technical solution adopted by the present invention is: a zipper structure for convenient engagement on a seat slide, including a zipper head, zipper teeth, and an upper rail. The two zipper teeth pass through the inside of the zipper head, and the two zipper heads are respectively arranged at both ends of the upper rail. The zipper head includes a separation end and an engagement end, and further includes a zipper guide block. One end of the zipper guide block is connected to the zipper head, and the other end is fixedly connected to the upper rail. The front end of the zipper guide block is provided with a guide convex block that abuts against the separation end. The zipper guide block is provided with a stepped guide platform, a guide sliding surface, and a sliding platform from top to bottom. The two guide platforms and the two guide sliding surfaces are respectively arranged on both sides of the zipper guide block. The plane where the guide convex block is located is the same as the plane where the guide sliding surface is located. The guide sliding surface extends outward from top to bottom. The intersection of the guide platform and the guide sliding surface forms a guide edge line. The extension lines of the two guide edge lines form an angle not greater than 60° with the guide convex block.

[0006] Two zipper teeth enter the zipper guide block along the guiding sliding surface. Due to the existence of the guiding ridge line, the zipper teeth will not cross the guiding ridge line to reach the guiding platform, but slide forward along the guiding ridge line. Moreover, the guiding sliding surface extending outward from top to bottom and one end of the two zipper teeth have been engaged, and the zipper teeth always tend to move inward, so they will not leave the guiding sliding surface and descend to the sliding platform either; the plane where the guiding convex block is located is the same as the plane where the guiding sliding surface is located, and the zipper teeth can reach the guiding convex block along the guiding sliding surface. The guiding convex block abuts against the separating end of the zipper head, and the zipper teeth passing through the guiding convex block can smoothly enter the zipper head from the separating end. Since the two zipper teeth reach the guiding convex block along the guiding ridge line, before entering the separating end and preparing to engage, the angle between the two zipper teeth and the guiding convex block is the angle between the two guiding ridge lines and the guiding convex block, that is, an angle not greater than 60° is formed between the two zipper teeth and the guiding convex block. Within this angle range, the friction between the zipper teeth and the zipper head is small, which is helpful for the engagement between the zipper teeth.

[0007] In some embodiments, the angle between the surface of the guiding sliding surface and the horizontal plane gradually increases from front to back, and the angle between the rear end of the guiding sliding surface and the horizontal plane is not greater than 90°. When the zipper teeth are separated, the zipper teeth enter the guiding sliding surface along the guiding convex block. Since the guiding sliding surface is narrow at the top and wide at the bottom and the angle with the horizontal plane gradually approaches 90°, the overall angle of the zipper teeth will gradually change from slightly upturned to vertically upward when passing through the guiding sliding surface, avoiding direct friction between the tooth ends of the zipper teeth and the surface of the zipper guide block, and also avoiding friction between the tooth ends of the zipper teeth and the surface of the upper rail, reducing the wear of the tooth ends of the zipper teeth.

[0008] In some embodiments, the angle between the surface of the guiding platform and the horizontal plane is smaller than the angle between the surface of the guiding sliding surface and the horizontal plane. This solution can form a more obvious guiding ridge line, and the larger the angle between the surface of the guiding sliding surface and the horizontal plane, the more helpful it is for the zipper teeth to maintain the upward movement trend.

[0009] In some embodiments, the zipper guide block is an axisymmetric three-dimensional figure, and the guiding convex block is arranged between the two guiding sliding surfaces. The two zipper teeth respectively pass through the guiding convex block along the guiding sliding surface. Since the zipper head is an axisymmetric figure, the axisymmetric three-dimensional zipper guide block helps the two zipper teeth to enter the zipper head synchronously, which is beneficial to the engagement between the zipper teeth.

[0010] In some embodiments, the guiding sliding surface extends outward from front to back. Since the engagement process of the zipper teeth is a narrowing process, the guiding sliding surface extending outward from front to back is to cooperate with the engagement process of the zipper teeth to make the engagement process smoother.

[0011] In some embodiments, there is a fixing hole above the guiding bump, and a second fixing hole communicating with the fixing hole is provided at the upper end of the zipper head. A fixing screw that is threadedly connected to both of them is provided between the first fixing hole and the second fixing hole. The abutting relationship between the fixed guiding bump and the zipper head is for the zipper teeth to smoothly enter the zipper head from the guiding bump.

[0012] In some embodiments, there is a fixing groove behind the guiding bump. A fixing hole and an adjusting screw threadedly connected thereto are provided at the bottom end of the fixing groove. A connecting member rotatably connected to the adjusting screw is fixedly provided at the upper end of the zipper head, and there are gaps between both sides of the connecting member and both sides of the fixing groove respectively. The zipper head has a certain rotational space, and when the seat slides at a high speed, the zipper head can better adapt to the angular change between the zipper teeth caused by vibration.

[0013] In some embodiments, the sliding table is provided with a sliding space allowing an external lead screw to pass through. Without affecting the zipper engagement process, the lead screw passes through the sliding table, making the overall structure more compact and also playing a certain role in preventing foreign objects from entering the lead screw.

[0014] In some embodiments, the distance between the ends of the two guiding ridges is greater than the width of the upper rail. Since the zipper teeth are along the guiding ridges on the guiding sliding surface, the width of the zipper teeth when entering the guiding sliding surface is the distance between the ends of the two guiding ridges. This distance being greater than the width of the upper rail means there is a certain distance between the zipper teeth and the upper rail, reducing the friction between the zipper teeth and the upper rail to a certain extent and reducing the wear of the zipper teeth.

[0015] In some embodiments, the surface of the guiding sliding surface is smooth. The smooth surface of the guiding sliding surface is beneficial for the chain teeth to contract along the established route.

[0016] The beneficial effects of the present invention are as follows:

[0017] This zipper structure for facilitating engagement on a seat slide rail reduces the friction between the zipper teeth and the zipper head by providing a zipper guiding block between the zipper head and the upper rail, enabling the two separated zipper teeth to enter the zipper head at a smaller included angle. This ensures that when the seat slides at a high speed, the zipper head can perform the engagement operation on the zipper teeth, improving the user experience and reducing the wear of the zipper teeth at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the overall structure of Embodiment 1;

[0019] Figure 2 It is a schematic connection structure diagram of the zipper head, zipper guiding block, upper rail and lead screw of Embodiment 1;

[0020] Figure 3 It is a schematic connection structure diagram of the zipper head and the zipper guiding block of Embodiment 1;

[0021] Figure 4 Schematic structural diagram of the zipper guide block of Embodiment 1;

[0022] Figure 5 Schematic structural diagram of the zipper head of Embodiment 1;

[0023] Figure 6 Schematic connection structure diagram of the zipper head and the zipper guide block of Embodiment 2;

[0024] Figure 7 Schematic structural diagram of the zipper head of Embodiment 2;

[0025] Figure 8 Function relation diagram of different biting angles between two zipper teeth and the sliding force required therefor.

[0026] The reference numerals and names in the figure are corresponding as follows: 1, zipper head; 2, zipper teeth; 3, zipper guide block; 4, upper rail; 5, lead screw; 11, biting end; 12, separating end; 13, connecting member; 30, guiding convex block; 31, sliding table; 32, guiding sliding surface; 33, guiding table; 34, fixing groove; 35, adjusting screw; 36, connecting hole; 321, guiding ridge line; 37, fixing hole I; 14, fixing hole II; 38, fixing screw; Detailed implementation manners

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The present invention provides two technical solutions:

[0029] Embodiment 1

[0030] Please refer to Figure 1 and Figure 2 , a zipper structure for facilitating biting on a seat slide rail, comprising a zipper head 1, zipper teeth 2, a zipper guide block 3 and an upper rail 4. Two zipper heads 1 are respectively arranged at two ends of the upper rail 4. Two separated zipper teeth 2 sequentially pass through the upper rail 4, the zipper guide block 3 and the zipper head 1. Among them, the two zipper teeth 2 pass through the inside of the zipper head 1. The zipper head 1 includes a separating end 12 and a biting end 11. One end of the zipper guide block 3 is connected to the zipper head 1, and the other end is fixedly connected to the upper rail 4. The rear end of the zipper guide block 3 is fixedly sleeved on the upper rail 4.

[0031] Please refer to Figures 2 - 5, the zipper guide block 3 is an axially symmetric three-dimensional figure. At the front end of the zipper guide block 3, there is a guide convex block 30 that abuts against the separation end 12. From top to bottom, the zipper guide block 3 is provided with a stepped guide platform 33, a guide sliding surface 32, and a sliding platform 31. The sliding platform 31 is provided with a sliding space allowing an external lead screw 5 to pass through. The two guide platforms 33 and the two guide sliding surfaces 32 are respectively arranged on both sides of the zipper guide block 3, and the guide convex block 30 is arranged between the two guide sliding surfaces 32. The plane where the guide convex block 30 is located is the same as the plane where the guide sliding surface 32 is located. The guide sliding surface 32 extends outward from top to bottom and from front to back. The angle between the surface of the guide sliding surface 32 and the horizontal plane gradually increases from front to back, and the angle between the rear end of the guide sliding surface 32 and the horizontal plane is 90°, and the surface of the guide sliding surface 32 is smooth. The angle between the surface of the guide platform 33 and the horizontal plane is smaller than the angle between the surface of the guide sliding surface 32 and the horizontal plane. At the junction of the guide platform 33 and the guide sliding surface 32, a relatively prominent guide ridge line 321 is formed. The angle between the surface of the guide sliding surface 32 and the horizontal plane is smaller than the angle between the sliding platform 31 and the horizontal plane. Therefore, there is also an obvious ridge line between the guide sliding surface 32 and the sliding platform 31. The extension lines of the two guide ridge lines 321 form an angle of 60° with the guide convex block 30. Among them, the distance between the ends of the two guide ridge lines 321 is greater than the width of the upper rail 4. The two separated zipper teeth 2 respectively slide along the guide sliding surface 32 and then pass through the guide convex block 30.

[0032] Behind the guide convex block 30, there is a fixing groove 34. At the bottom end of the fixing groove 34, there is a fixing hole and an adjusting screw 35 threadedly connected thereto. At the upper end of the zipper head 1, there is a connecting member 13 fixedly provided and rotatably connected to the adjusting screw 35. There are gaps between both sides of the connecting member 13 and both sides of the fixing groove 34 respectively. At the rear end of the zipper guide block 3, there is a connecting hole 36 connected to the upper rail 4. The connecting hole 36 is arranged behind the fixing groove 34.

[0033] The working principle and usage process of the present invention: When the zipper teeth 2 are closed: The two separated zipper teeth 2 enter the zipper guide block 3 along the guide sliding surface 32. Since the zipper teeth 2 move inward and upward, the zipper teeth 2 always slide forward along the guide ridge line 321, pass through the guide convex block 30 after leaving the guide sliding surface 32, and enter the zipper head 1, and the zipper teeth 2 perform a biting operation inside the zipper head 1.

[0034] When the zipper teeth 2 are separated: The two closed zipper teeth 2 perform a separation operation inside the zipper head. The two zipper teeth 2 respectively move along the guide convex block 30 to the guide sliding surface 32. The zipper teeth 2 move backward along the guide sliding surface 32. The zipper teeth 2 gradually change from slightly upturned to vertically upward. The tooth ends of the zipper teeth 2 gradually change from a planar opening to an upward opening, avoiding the direct contact between the tooth ends of the zipper teeth 2 and the zipper guide block 3 and the upper rail 4, and reducing the wear of the zipper teeth 2.

[0035] The different biting angles between two zipper teeth 2 and the required sliding force:

[0036]

[0037]

[0038] It can be known from the table that when two zipper teeth 2 bite at different angles, the larger the angle, the greater the sliding force. Therefore, by controlling the angle between the zipper teeth 2 within 60° for biting, the sliding force can be effectively reduced, the biting between the zipper teeth 2 can be ensured, and the service life of the zipper teeth 2 can be improved.

[0039] Embodiment 2

[0040] Please refer to Figure 6 and Figure 7 , which is different from Embodiment 1 in the connection manner between the zipper guide block 3 and the zipper head 1. There is a fixing hole 37 above the guiding convex block 30, and there is a fixing hole 14 at the upper end of the zipper head 1 that communicates with the fixing hole 37. A fixing screw 38 that is threadedly connected to both of them is provided between the fixing hole 37 and the fixing hole 14.

[0041] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A zipper structure for convenient engagement on a seat slide rail, comprising a zipper head (1), zipper teeth (2), and an upper rail (4). The two zipper teeth (2) pass through the interior of the zipper head (1), and the two zipper heads (1) are respectively arranged at both ends of the upper rail (4). The zipper head (1) includes a separating end (12) and an engaging end (11). Characterized in that, it includes a zipper guiding block (3). One end of the zipper guiding block (3) is connected to the zipper head (1), and the other end is fixedly connected to the upper rail (4). A guiding convex block (30) abutting against the separating end (12) is provided at the front end of the zipper guiding block (3). The zipper guiding block (3) is provided with a stepped guiding platform (33), a guiding sliding surface (32), and a sliding platform (31) from top to bottom. The two guiding platforms (33) and the two guiding sliding surfaces (32) are respectively arranged on both sides of the zipper guiding block (3). The plane where the guiding convex block (30) is located is the same as the plane where the guiding sliding surface (32) is located. The guiding sliding surface (32) extends outward from top to bottom. A guiding edge line (321) is formed at the junction of the guiding platform (33) and the guiding sliding surface (32). The included angle between the extension lines of the two guiding edge lines (321) and the guiding convex block (30) is not greater than 60°.

2. A zipper structure for convenient engagement on a seat slide rail according to claim 1, Characterized in that, the included angle between the surface of the guiding sliding surface (32) and the horizontal plane gradually increases from front to back, and the included angle between the rear end of the guiding sliding surface (32) and the horizontal plane is not greater than 90°.

3. A zipper structure for convenient engagement on a seat slide rail according to claim 1, Characterized in that, the included angle between the surface of the guiding platform (33) and the horizontal plane is smaller than the included angle between the surface of the guiding sliding surface (32) and the horizontal plane.

4. A zipper structure for convenient engagement on a seat slide rail according to claim 1, Characterized in that, the zipper guiding block (3) is an axisymmetric three-dimensional figure. The guiding convex block (30) is arranged between the two guiding sliding surfaces (32). The two zipper teeth (2) respectively pass along the guiding sliding surfaces (32) and then pass through the guiding convex block (30).

5. A zipper structure for convenient engagement on a seat slide rail according to claim 1, Characterized in that, the guiding sliding surface (32) extends outward from front to back.

6. A zipper structure for convenient engagement on a seat slide rail according to claim 1, Characterized in that, a fixing hole one (37) is provided above the guiding convex block (30). A fixing hole two (14) communicating with the fixing hole one (37) is provided at the upper end of the zipper head (1). A fixing screw (38) threadedly connected to both of them is provided between the fixing hole one (37) and the fixing hole two (14).

7. A zipper structure for convenient engagement on a seat slide rail according to claim 1, Characterized in that, A fixing groove (34) is provided behind the guiding bump (30). A fixing hole and an adjusting screw (35) threadedly connected thereto are provided at the bottom end of the fixing groove (34). A connecting member (13) rotatably connected to the adjusting screw (35) is fixedly provided at the upper end of the zipper head (1). There are gaps between both sides of the connecting member (13) and both sides of the fixing groove (34) respectively.

8. A zipper structure for facilitating engagement on a seat slide rail according to claim 1, characterized in that the sliding table (31) is provided with a sliding space allowing an external lead screw (5) to pass through.

9. A zipper structure for facilitating engagement on a seat slide rail according to claim 1, characterized in that the distance between the ends of the two guiding ridges (321) is greater than the width of the upper rail (4).

10. A zipper structure for facilitating engagement on a seat slide rail according to claim 1, characterized in that the surface of the guiding sliding surface (32) is smooth.

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