Unlocking mechanism of seat slide rail and seat slide rail

Abstract

The present invention discloses an unlocking mechanism for a seat slide, comprising an unlocking rod (1) and an unlocking handle (2). The unlocking rod (1) is a U-shaped structure and is placed inside an inner slide (01). The inner end is located above a locking mechanism (03) and the middle portion is hinged to the inner slide (01). The unlocking rod (1) can rotate around the hinge. The unlocking rod (1) also comprises an elastic component (3). A limiting component (A) is provided at the outer end of the unlocking rod (1). The connecting portion (21) of the unlocking handle (2) is inserted between the unlocking rod (1) and the limiting component (A). The elastic component is clamped in the middle of the bottom wall of the connecting portion (21) and provides an upward force so that a gap exists between the inner end of the connecting portion (21) and the bottom wall of the unlocking rod (1). The unlocking handle (2) can rotate around the limiting component (A) and press the elastic component (3) until the connecting portion (21) and the unlocking rod (1) are against each other and rotate synchronously. The present invention provides a seat slide. The present invention can simplify the process and avoid the risk of premature unlocking.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and in particular to an unlocking mechanism for a seat slide rail and the seat slide rail. Background Art

[0002] The seat rail is a device that connects the seat pan and the vehicle floor to enable the seat to be adjusted forward and backward, making it easier for passengers to adjust the seat to the most comfortable position according to their needs.

[0003] In an unlocking mechanism of a seat slide in the prior art, an unlocking rod and an unlocking handle are fixed together by rivets. When the unlocking handle is lifted upward, the unlocking handle drives the unlocking rod to rotate around the rotation center, and the other end drives the locking mechanism downward to unlock the inner and outer slides in the seat slide.

[0004] The prior art solution of fixing the unlocking handle to the unlocking rod has the following problems: First, when the unlocking handle is assembled, it needs to be connected to the unlocking rods of the slide rails on both sides by rivets. The assembly process is complicated and the number of parts is large. In addition, the connection between the unlocking handle and the unlocking rod must be arranged on the outside of the slide rail for riveting assembly; Second, the unlocking handle and the unlocking rod are rigidly fixed, and the manufacturing error of the unlocking handle will be completely transferred to the unlocking rod. Because the opening size of the unlocking handle is large, that is, the distance between the two slide rails is large, the upper and lower errors at the assembly points at both ends of the unlocking handle are relatively large. The error of the unlocking handle is transferred to the unlocking rod, which will cause the upper and lower deviations of the positions of the unlocking rods on the left and right sides, causing the problem of premature unlocking of one side of the unlocking rod; Third, since the unlocking mechanism is arranged in the inner slide rail cavity, and the space in the inner slide rail cavity is limited, the movable space of the unlocking rod is limited, so the unlocking idle stroke is relatively small. Combined with the accumulated errors of the unlocking handle, the risk of premature unlocking of one side of the slide rail is more likely to occur. Summary of the Invention

[0005] The purpose of the present invention is to provide an unlocking mechanism for a seat slide rail, which reduces parts, simplifies the process, increases the unlocking idle travel angle of the unlocking handle, avoids the error of the unlocking handle being directly transferred to the unlocking rod, and avoids the risk of premature unlocking.

[0006] To solve the above technical problems, the present invention provides an unlocking mechanism for a seat slide, comprising an unlocking lever and an unlocking handle. The unlocking lever is a U-shaped structure extending longitudinally and is disposed within the inner slide rail. The inner end of the unlocking lever is located at a predetermined position above the locking mechanism, and the middle portion is hingedly fixed to the inner slide rail. The unlocking lever can rotate about the hinge to drive the locking mechanism downward via the inner end.

[0007] The unlocking lever further comprises an elastic component, a stopper extending laterally is provided at an opening at the outer end of the unlocking lever, the unlocking handle comprises a connecting portion and a handle portion, the connecting portion is inserted into the unlocking lever and is located between the unlocking lever and the stopper, the elastic component is clamped in the middle of the bottom wall of the connecting portion and provides an upward force so that a predetermined gap exists between the inner end of the connecting portion and the bottom wall of the unlocking lever;

[0008] The handle portion can rotate upward around the limiting member, and the connecting portion rotates downward, pressing the elastic component until the inner end of the connecting portion abuts against the bottom wall of the unlocking rod, and the two rotate synchronously.

[0009] From the above, it can be seen that the unlocking rod and the unlocking handle in the present invention are not rigidly connected. On the contrary, the unlocking handle can first rotate independently when it is subjected to an upward force. During this process, the unlocking rod is always in a stationary state until the inner end of the connecting part rotates to abut against the bottom wall of the unlocking rod, and the two rotate synchronously. Therefore, first, during installation, the unlocking handle only needs to be inserted into the unlocking rod and assembled with the elastic component. There is no need to add additional fixing elements, the assembly process is simple, and the assembly cost is saved; second, the unlocking handle can move independently, that is, the unlocking idle stroke of the unlocking handle is increased, thereby avoiding the error of the unlocking handle being directly transferred to the unlocking rod, causing the risk of premature unlocking, and improving the adaptability of the entire mechanism to the error on the left and right sides of the unlocking handle.

[0010] Optionally, the unlocking rod is provided with a limiting portion at a position corresponding to the inner end of the connecting portion. Under normal circumstances, the top wall of the inner end of the connecting portion abuts against the inner wall of the limiting portion.

[0011] Optionally, the end of the connecting portion facing the unlocking handle is gradually inclined upwards;

[0012] Alternatively, the diameter of the inner end of the connecting portion gradually decreases from the outside to the inside.

[0013] Optionally, a first groove with an inner end opening is provided at the inner end of the limiting portion, a second groove with an outer end opening is provided at the outer end of the unlocking rod, and a third groove with an lower end opening is provided at the middle part of the bottom wall of the connecting portion corresponding to the unlocking rod. The elastic component is a long columnar structure, which passes through the first groove, the second groove and the third groove in sequence. The elastic component located inside the second groove forms the limiting component, and the elastic component located inside the third groove provides an upward force for the connecting portion.

[0014] Optionally, the end of the elastic component close to the first groove is first folded outward longitudinally and obliquely upward, and then folded laterally. The lateral edge is used to abut against the inner side of the top wall of the inner slide rail to make the inner end of the unlocking rod be in the predetermined position.

[0015] Optionally, it further includes a fixed block and a rotating shaft, wherein the fixed block is fixedly connected to the inner side of the top wall of the inner slide rail and is hingedly fixed to the unlocking lever through the rotating shaft, and the unlocking lever can rotate around the rotating shaft.

[0016] Optionally, a notch is provided on the bottom wall of the unlocking rod at a position corresponding to the fixing block.

[0017] Optionally, the unlocking handle is provided with a matching arc-shaped step surface at the contact portion with the limiting member.

[0018] The present invention also provides a seat slide rail, comprising an inner slide rail, an outer slide rail, a locking mechanism and an unlocking mechanism, wherein the unlocking mechanism is the unlocking mechanism of the aforementioned seat slide rail.

[0019] The seat slide rail of the present invention includes the unlocking mechanism of the seat slide rail described above, and thus has the same technical effects as the unlocking mechanism of the seat slide rail described above, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a specific embodiment of the unlocking mechanism for the seat slide provided by the present invention;

[0021] Figure 2 for Figure 1 A partial enlarged view of the unlocking structure of the seat rail at the connection between the connecting portion and the unlocking lever;

[0022] Figure 3 for Figure 2 A top view of

[0023] Figure 4 for Figure 2 Portrait view;

[0024] Figure 5 for Figure 2 longitudinal section;

[0025] Figure 6 This is a structural schematic diagram of a specific embodiment of the seat slide provided by the present invention;

[0026] in, Figures 1 to 6 The reference numerals are described as follows:

[0027] 1-unlocking lever; 1a-notch; 2-unlocking handle; 21-connecting portion; 22-handle portion; 3-elastic component; A-limiting member; 4-limiting portion; a-first groove; b-second groove; c-third groove; 5-fixing block; 6-rotating axis;

[0028] 01-inner slide rail; 02-outer slide rail; 03-locking mechanism; DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The words "first", "second", etc. mentioned in this article are only used to facilitate the description of two or more structures or components with the same or similar structures and / or functions, and do not mean any special limitation on the order and / or importance.

[0031] Herein, the unlocking lever 1 is closer to the middle of the inner rail 01 as the inner end, and the unlocking lever 1 is closer to the end of the inner rail 01 as the outer end. The end of the connecting portion 21 inserted into the inner rail 01 is the inner end, and the end connected to the handle portion 22 is the outer end.

[0032] Please refer to Figure 1-Figure 5 , Figure 1 A schematic structural diagram of a specific embodiment of the unlocking mechanism for the seat slide provided by the present invention; Figure 2 for Figure 1 A partial enlarged view of the unlocking structure of the seat rail at the connection between the connecting portion and the unlocking lever; Figure 3 for Figure 2 A top view of Figure 4 for Figure 2 Portrait view; Figure 5 for Figure 2 Longitudinal section.

[0033] The present invention provides an unlocking mechanism for a seat slide, comprising an unlocking lever 1 and an unlocking handle 2. The unlocking lever 1 is a U-shaped structure extending longitudinally and is disposed within an inner slide rail 01. Specifically, the inner end of the unlocking lever 1 is located at a predetermined position above a locking mechanism 03, the middle portion is hingedly fixed to the inner slide rail 01, and the outer end is used to assemble with the unlocking handle 2. The unlocking lever 1 can rotate about the middle hinge to drive the locking mechanism 03 downward via the inner end, thereby unlocking the relative position of the inner slide rail 01 and the outer slide rail 02.

[0034] It also includes an elastic component 3. A limiter A extending laterally is provided at the outer end opening of the unlocking lever 1. The unlocking handle 2 is generally U-shaped and includes a connecting portion 21 and a handle portion 22. The connecting portions 21 are located on both sides of the handle portion 22 and respectively unlock the seat rails on both sides. The connecting portions 21 are inserted into the unlocking lever 1 on the corresponding side and are located between the unlocking lever 1 and the limiter A. The elastic component 3 is clamped in the middle of the bottom wall of the connecting portion 21 and provides an upward force so that a predetermined gap exists between the inner end of the connecting portion 21 and the bottom wall of the unlocking lever 1.

[0035] When unlocking, the handle portion 22 of the unlocking handle 2 rotates upward around the limit member A under the upward force, and the connecting portion 21 rotates downward around the limit member A. The middle part of the bottom wall of the connecting portion 21 presses the elastic component 3 until the inner end of the connecting portion 21 is against the bottom wall of the unlocking rod 1. At this time, the two can rotate synchronously and continue to push the handle portion 22 upward until the compression locking mechanism 03 is unlocked.

[0036] From the above, it can be seen that the unlocking rod 1 and the unlocking handle 2 in the present invention are not rigidly connected. On the contrary, the unlocking handle 2 can first rotate independently when subjected to an upward force. During this process, the unlocking rod 1 is always in a stationary state until the inner end of the connecting part 21 rotates to abut against the bottom wall of the unlocking rod 1, and the two rotate synchronously. Therefore, first, during installation, the unlocking handle 2 only needs to be inserted into the unlocking rod 1 and assembled with the elastic component 3. No additional fixing elements are required, the assembly process is simple, and the assembly cost is saved; second, the unlocking handle 2 can move independently, that is, the unlocking idle stroke of the unlocking handle 2 is increased, thereby avoiding the error of the unlocking handle 2 being directly transferred to the unlocking rod 1, causing the risk of premature unlocking, and improving the adaptability of the entire mechanism to the error on the left and right sides of the unlocking handle 2; third, the connection between the unlocking handle 2 and the unlocking rod 1 is located inside the inner slide rail 01, saving space.

[0037] like Figure 2 and Figure 5 As shown, in this embodiment, at the corresponding positions of the unlocking rod 1 and the inner end of the connecting part 21, the two side walls are correspondingly provided with folded edges that are folded upward and inward, and the two folded edges form a limiting part 4. In the normal state, that is, the locked state, the connecting part 21 is acted upon by the elastic component 3, and the top wall of its inner end is against the inner wall of the limiting part 4, which plays a limiting role.

[0038] Of course, in practical applications, the specific structure of the limiting portion 4 is not limited, as long as it can limit the position of the inner end of the connecting portion 21.

[0039] Furthermore, if Figure 5 As shown, the end of the limiting portion 4 facing the unlocking handle 2 gradually tilts upward. This setting can effectively expand the insertion area, making it easier for the connecting portion 21 to be inserted into the limiting portion 4 and the unlocking rod 1. In addition, the diameter of the inner end of the connecting portion 21 gradually decreases from the outside to the inside. This setting is also for the convenience of inserting the connecting portion 21 and preventing the connecting portion 21 from being installed in the wrong position.

[0040] Please continue to refer to Figure 5In this embodiment, a first groove a with an inner end opening is provided at the inner end of the limiting portion 4, a second groove b with an outer end opening is provided at the outer end of the unlocking rod 1, and a third groove c with an lower end opening is provided at the middle portion of the bottom wall of the connecting portion 21 corresponding to the unlocking rod 1. The third groove c is located between the first groove a and the second groove b. The elastic component 3 is a long columnar structure, which passes through the first groove a, the second groove b and the third groove c in sequence. The portion of the elastic component 3 located inside the second groove b forms the aforementioned limiting member A, which is used to limit the position of the connecting portion 21; the elastic component The portion 3 located inside the third groove c is used to provide an upward force on the connecting portion 21, and at the same time, it can also play a positioning role to ensure that the relative position of the connecting portion 21 and the unlocking lever 1 is fixed; the end of the elastic component 3 close to the first groove a is first folded outward and obliquely upward along the longitudinal direction, and then folded laterally. The lateral edge is used to abut against the inner side of the top wall of the inner slide rail 01, so that the outer end of the unlocking lever 1 is subjected to a downward force, and then the inner end of the unlocking lever 1 is in a predetermined position above the locking mechanism 03, that is, it abuts against the inner side wall of the inner slide rail 01.

[0041] This embodiment adopts a long elastic component 3, and bends the elastic component 3 into a special-shaped structure to be assembled on the unlocking rod 1, and at the same time realizes the limiting function of the unlocking rod 1 and the outer end of the connecting part 21, the positioning function of the inner end of the unlocking rod 1 (that is, the inner end of the unlocking rod 1 is in a predetermined position above the locking mechanism 03) and the positioning function of the inner end of the connecting part 21 (that is, an upward force is applied to the middle part of the connecting part 21, so that the inner end of the connecting part 21 is against the inner wall of the limiting part 4). It has a simple structure, reliable installation and low cost.

[0042] Of course, in actual application, the setting method of the elastic component 3 in this embodiment is not limited. For example, a limiting rod can be separately set at the opening of the outer end of the unlocking rod 1 to play a limiting role, thereby realizing the limiting function of the unlocking rod 1 and the outer end of the connecting part 21; the elastic component includes an annular elastic rope, which is mounted on the unlocking rod 1 and is located inside the third groove c. The elastic rope applies an upward force to the middle part of the connecting part 21, so that the inner end of the connecting part 21 is abutted against the inner wall of the limiting part 4, thereby realizing the positioning function of the inner end of the connecting part 21; the elastic component also includes a spring arranged near the outer end of the unlocking rod 1 and extending upward, which is used to abut against the inner side of the top wall of the inner slide rail 01, so that the outer end of the unlocking rod 1 is subjected to a downward force, and the inner end is in a predetermined position above the locking mechanism 03, thereby realizing the positioning function of the inner end of the unlocking rod 1.

[0043] Please continue to refer to Figure 2 The present invention also includes a fixed block 5 and a rotating shaft 6. The fixed block 5 is fixedly connected to the inner side of the top wall of the inner slide rail 01 and is riveted to the unlocking rod 1 through the rotating shaft 6. Of course, the rotating shaft 6 can also be a bolt and cooperate with a nut to realize the hinged fixation of the fixed block 5 and the unlocking rod 1, and the unlocking rod 1 can rotate around the rotating shaft 6.

[0044] In addition, a notch 1a is provided on the bottom wall of the unlocking rod 1 at a position corresponding to the fixed block 5. The notch 1a is a process hole, which facilitates the support tooling to pass through the notch 1a when the fixed block 5 is fixed to the top wall of the inner slide rail 01 to support the fixed block 5.

[0045] Please continue to refer to Figure 2 and Figure 5 The unlocking handle 2 is also provided with a matching arc-shaped step surface at the contact part with the limiter A. On the one hand, it facilitates the rotation of the unlocking handle 2 around the limiter A; on the other hand, it also plays a limiting role to prevent the connecting part 21 from moving toward the inside of the unlocking rod 1.

[0046] Please refer to Figure 6 , Figure 6 The figure is a structural schematic diagram of a specific embodiment of the seat slide provided by the present invention.

[0047] The present invention further provides a seat slide rail, comprising an inner slide rail 01, an outer slide rail 02, a locking mechanism 03 and an unlocking mechanism of the aforementioned seat slide rail.

[0048] The seat slide rail of the present invention includes the unlocking mechanism of the seat slide rail described above, and thus has the same technical effects as the unlocking mechanism of the seat slide rail described above, which will not be described in detail here.

[0049] The above describes in detail the unlocking mechanism and seat slide provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims.

Claims

1. An unlocking mechanism for a seat slide, comprising an unlocking lever (1) and an unlocking handle (2), wherein the unlocking lever (1) is a U-shaped structure extending in the longitudinal direction and is arranged inside the inner slide rail (01), wherein the inner end of the unlocking lever is located at a predetermined position above the locking mechanism (03), and the middle part is hinged and fixed to the inner slide rail (01), and the unlocking lever (1) can rotate around the hinge to drive the locking mechanism (03) downward through the inner end, and is characterized in that It also includes an elastic component (3), a limiter (A) extending laterally at the outer end opening of the unlocking rod (1), and the unlocking handle (2) includes a connecting portion (21) and a handle portion (22), the connecting portion (21) is inserted into the unlocking rod (1) and is located between the unlocking rod (1) and the limiter (A), and the elastic component (3) is clamped in the middle of the bottom wall of the connecting portion (21) and provides an upward force so that a predetermined gap exists between the inner end of the connecting portion (21) and the bottom wall of the unlocking rod (1); The handle portion (22) can rotate upward around the limiting member (A), and the connecting portion (21) rotates downward, pressing the elastic component (3) until the inner end of the connecting portion (21) abuts against the bottom wall of the unlocking rod (1), and the two rotate synchronously; The unlocking lever (1) is provided with a limiting portion (4) at a position corresponding to the inner end of the connecting portion (21); in a normal state, the top wall of the inner end of the connecting portion (21) abuts against the inner wall of the limiting portion (4); The inner end of the limiting portion (4) is provided with a first groove (a) with an inner end opening, the outer end of the unlocking rod (1) is provided with a second groove (b) with an outer end opening, and the middle part of the bottom wall of the connecting portion (21) corresponding to the unlocking rod (1) is provided with a third groove (c) with an lower end opening. The elastic component (3) is a long columnar structure, which passes through the first groove (a), the second groove (b) and the third groove (c) in sequence. The elastic component located inside the second groove (b) forms the limiting member (A), and the elastic component located inside the third groove (c) provides an upward force for the connecting portion (21).

2. The unlocking mechanism of the seat slide rail according to claim 1, characterized in that: One end of the limiting portion (4) facing the unlocking handle (2) is gradually inclined upward; Alternatively, the diameter of the inner end of the connecting portion (21) gradually decreases from the outside to the inside.

3. The unlocking mechanism of the seat slide rail according to claim 1, characterized in that: The end of the elastic component (3) close to the first groove (a) is first folded outward in the longitudinal direction and obliquely upward, and then folded in the transverse direction. The transverse edge is used to abut against the inner side of the top wall of the inner slide rail (01) so that the inner end of the unlocking rod (1) is in the predetermined position.

4. The unlocking mechanism of the seat slide rail according to any one of claims 1 to 3, characterized in that: It also includes a fixed block (5) and a rotating shaft (6), wherein the fixed block (5) is fixedly connected to the inner side of the top wall of the inner slide rail (01) and is hingedly fixed to the unlocking lever (1) via the rotating shaft (6), and the unlocking lever (1) can rotate around the rotating shaft (6).

5. The unlocking mechanism of the seat slide rail according to claim 4, characterized in that: The bottom wall of the unlocking lever (1) is provided with a notch (1a) at a position corresponding to the fixing block (5).

6. The unlocking mechanism of the seat slide rail according to any one of claims 1 to 3, characterized in that: The unlocking handle (2) is provided with a matching arc-shaped step surface at the contact portion with the limiting member (A).

7. A seat slide rail, comprising an inner slide rail (01), an outer slide rail (02), a locking mechanism (03) and an unlocking mechanism, characterized in that: The unlocking mechanism is the unlocking mechanism of the seat slide rail according to any one of claims 1 to 6.

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