A simple external middle position limit structure for car seat slide rails

Abstract

The present invention provides a simple external middle position limit structure for a car seat slide rail, comprising a stopper, an upper connecting bracket, a lower connecting bracket, a rotating shaft assembly, and a rotating handle. The stopper is installed at the front end of the side of the slide rail bracket, the upper connecting bracket is installed between the lower frame of the seat and the slide rail, the lower connecting bracket is arranged on the side of the slide rail and the slide rail bracket, the lower connecting bracket is connected to the upper connecting bracket through the rotating shaft assembly, and the rotating handle is installed on the lower connecting bracket. When the rotating handle is in the initial position, the return torsion spring is in a relaxed state, the upper connecting bracket is slid to the front end of the slide rail bracket, the lower connecting bracket and the stopper contact each other and stop sliding forward, at this time, the rotating handle is lifted, the return torsion spring is in a compressed state, and the lower connecting bracket is separated from the stopper and continues to slide forward. The present invention is easy to disassemble, and the slide rail stroke can be changed without affecting the design and use of the slide rail. It has a compact structure and flexible layout. It can be applied to slide rails of various types and strokes and has strong versatility.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seat accessories, and in particular relates to a simple external middle position limiting structure of an automobile seat slide rail. Background Art

[0002] When some heavy trucks are parked and berthed, the front row of car seats need to be moved to the front of their frequently used range and then slid forward a certain distance to provide berthing space for the rear berth. However, in order to ensure traffic safety and the riding comfort of the front row passengers during driving, the above-mentioned further sliding distance should not be used during driving and needs to be locked to avoid danger. The existing limit structures of car seat slide rails are mostly built-in limit structures of the slide rails, which can move within the full range of travel during the pulling process. Passengers can pull the seat to the front end of the travel range that should not be used during driving by simply pulling, which is very likely to cause danger. In addition, the built-in limit structure is used in conjunction with the slide rail and cannot be disassembled for use, so it is not universal. Summary of the invention

[0003] In order to solve the problems existing in the background technology, the present invention provides a simple external middle position limiting structure of a car seat slide rail.

[0004] The technical solution of the present invention is as follows:

[0005] A simple external middle position limit structure for a car seat slide rail comprises a stopper, an upper connecting bracket, a lower connecting bracket, a rotating shaft assembly, and a rotating handle, wherein the stopper is mounted on the front end of the side of the slide rail bracket; the upper connecting bracket is mounted between the lower frame of the seat and the slide rail, and the upper connecting bracket slides along the slide rail together with the lower frame of the seat; the lower connecting bracket is arranged on the side of the slide rail and the slide rail bracket, and the lower connecting bracket is connected to the upper connecting bracket through a rotating shaft assembly; the rotating shaft assembly comprises a rotating shaft, a bushing mounted at both ends of the rotating shaft, and a return torsion spring mounted between the two bushings, The torsion spring is sleeved on the rotating shaft, one end of the return torsion spring is hung on the upper connecting bracket, and the other end of the return torsion spring is hung on the lower connecting bracket; the rotating handle is installed on the lower connecting bracket, and when the rotating handle is in the initial position, the return torsion spring is in a relaxed state, and the upper connecting bracket is slid to the front end of the slide rail bracket, and the lower connecting bracket and the stopper contact each other to prevent the upper connecting bracket from continuing to slide forward. At this time, when the rotating handle is lifted, the return torsion spring is in a compressed state, the lower connecting bracket is separated from the stopper, and the upper connecting bracket can continue to slide forward.

[0006] As a preferred embodiment of the present invention, the upper connecting bracket includes an upper connecting plate, a front mounting hole and a rear mounting hole are provided on the upper connecting plate, the front bolt passes through the front mounting hole to be installed on the slide rail, and the rear bolt passes through the lower frame of the seat and the rear mounting hole in sequence and is installed on the slide rail; two arc-shaped welding parts and two limiting claws extend outward from the outer side of the upper connecting plate, the arc-shaped openings of the arc-shaped welding parts are arranged downward, and the arc-shaped openings of the two arc-shaped welding parts are respectively welded to a shaft sleeve; the two limiting claws are arranged between the two arc-shaped welding parts, and the two limiting claws are used to limit the flipping angle of the lower connecting bracket, and an upper avoidance area for accommodating a return torsion spring is provided between the two limiting claws, and the root of one of the limiting claws is hooked to one end of the return torsion spring.

[0007] As a preferred embodiment of the present invention, the lower connecting bracket includes a lower connecting plate, the lower connecting plate is provided with a hanging portion which is hung with the other end of the return torsion spring, the hanging portion is arranged below the lower connecting plate, the left and right sides of the hanging portion are hollowed out, and the front and rear ends of the hanging portion are integrally connected with the lower connecting plate; a limiting plate is extended downwardly from the left side of the lower connecting plate, and the limiting plate includes a bottom limiting portion which contacts with the stop block and a rear end limiting portion which contacts with the side surface of the slide rail; a right welding plate is extended downwardly from the right side of the lower connecting plate; a rear welding plate is extended downwardly from the rear end of the lower connecting plate, and a lower avoidance area for accommodating the return torsion spring is provided on the rear welding plate, and an arc-shaped welding groove is provided on the rear welding plate in the left and right directions, the arc-shaped welding groove is welded to the rotating shaft, and the rotating shaft is arranged above the rear end limiting portion.

[0008] As a preferred embodiment of the present invention, the block includes a fixing plate, which has two bolt holes, and is fixed to the bottom end of the slide rail bracket by bolts. A clamping plate is extended upward on one side of the fixing plate, and a protrusion extends forward from the middle position of the front end of the clamping plate, and the protrusion contacts the side of the slide rail bracket. A triangular plate is extended inward from the upper end of the clamping plate, and one side of the triangular plate contacts the side of the slide rail bracket, and the other side of the triangular plate and the rear end of the clamping plate are used to block the bottom end limit portion from moving forward.

[0009] As a preferred embodiment of the present invention, the rotating handle is U-shaped, and both ends of the rotating handle are respectively welded to the limiting plate and the right welding plate.

[0010] As a preferred embodiment of the present invention, reinforcing ribs are provided on the arc-shaped welding portion.

[0011] As a preferred embodiment of the present invention, the angle between the plane formed by the other side of the triangular plate and the rear end of the clamping plate and the side surface of the slide rail bracket is not greater than 90 degrees.

[0012] The beneficial effects of the present invention are as follows:

[0013] (1) The simple external middle limit structure of the automobile seat slide rail provided by the present invention is easy to disassemble and can change the slide rail stroke without affecting the design and use of the slide rail. It has a compact structure and flexible layout and can be applied to slide rails of various types and strokes, and has strong versatility.

[0014] (2) The present invention provides a simple external middle limit structure for the car seat slide rail, wherein the angle between the plane formed by the other side of the triangle plate in the block structure and the side surface of the slide rail bracket is not greater than 90 degrees. This design can ensure that the seat slides to the block, and the block can completely block the bottom limit part from moving forward, ensuring that the seat will not slide forward again. When the rotating handle is lifted, the bottom limit part moves to the upper position of the block, and the seat can continue to slide forward. When the seat needs to be slid backward, a protrusion extends forward from the middle position of the front end of the card plate, and the protrusion contacts the side surface of the slide rail bracket. Therefore, the bottom limit part can slide backward along the protrusion without pulling the rotating handle again. The operation is convenient and practical.

[0015] (3) The simple external middle limit structure of the automobile seat slide rail provided by the present invention has a bottom limit portion that moves to the upper position of the block when the handle is pulled upward. At this time, the two limit claws contact the lower connecting plate, limiting the further upward movement of the lower connecting plate. This not only prolongs the service life of the return torsion spring, but also avoids the collision problem caused by direct contact between the lower connecting bracket and the lower frame of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more clear and easy to understand. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is an exploded view of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the upper connecting bracket in the present invention.

[0020] Figure 4 It is a schematic structural diagram of the lower connecting bracket in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the stopper in the present invention.

[0022] Figure 6 It is an assembly schematic diagram of the present invention.

[0023] Figure 7 for Figure 6 Front view of .

[0024] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0025] The accompanying drawings are marked as follows: block 1, upper connecting bracket 2, lower connecting bracket 3, rotating shaft assembly 4, rotating handle 5, fixing plate 11, bolt hole 111, clamping plate 12, protrusion 121, triangular plate 13, upper connecting plate 21, front mounting hole 211, rear mounting hole 212, arc-shaped welding portion 22, reinforcing rib 221, limiting claw 23, upper avoidance area 24, lower connecting plate 31, hanging portion 32, limiting plate 33, bottom limiting portion 331, rear end limiting portion 332, right welding plate 34, rear welding plate 35, lower avoidance area 351, arc-shaped welding groove 352, rotating shaft 41, bushing 42, return torsion spring 43. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution and advantages of the present invention, the present application is described in detail below in conjunction with the accompanying drawings, but it is not intended to limit the protection scope of the present invention.

[0027] See also Figure 1 and Figure 6 Shown: A simple external middle position limiting structure of a car seat slide rail, comprising a stopper 1, an upper connecting bracket 2, a lower connecting bracket 3, a rotating shaft assembly 4, and a rotating handle 5.

[0028] See also Figure 2 , Figure 5 , Figure 6 As shown: the stopper 1 is installed at the front end of the side of the slide rail bracket, the stopper 1 includes a fixing plate 11, and two bolt holes 111 are provided on the fixing plate 11. The fixing plate 11 is fixed to the bottom end of the slide rail bracket by bolts, and a clamping plate 12 is extended upward on one side of the fixing plate 11. A protrusion 121 is extended forward from the middle position of the front end of the clamping plate 12, and the protrusion 121 contacts the side of the slide rail bracket. A triangular plate 13 is extended inward from the upper end of the clamping plate 12, and one side of the triangular plate 13 contacts the side of the slide rail bracket. The other side of the triangular plate 13 and the rear end of the clamping plate 12 are used to block the bottom limit portion 331 from moving forward, and the angle between the plane formed by the other side of the triangular plate 13 and the rear end of the clamping plate 12 and the side of the slide rail bracket is not greater than 90 degrees.

[0029] See also Figures 1 to 3 , Figures 6 to 8As shown: the upper connecting bracket 2 is installed between the lower frame of the seat and the slide rail, and the upper connecting bracket 2 slides along the slide rail together with the lower frame of the seat; the upper connecting bracket 2 includes an upper connecting plate 21, and the upper connecting plate 21 is provided with a front mounting hole 211 and a rear mounting hole 212. The front bolt passes through the front mounting hole 211 and is installed on the slide rail, and the rear bolt passes through the lower frame of the seat and the rear mounting hole 212 in sequence and is then installed on the slide rail; two arc-shaped welding portions 22 and two limit claws 23 extend outward from the outer side of the upper connecting plate 21, The arc-shaped opening of the arc-shaped welding part 22 is set downward, and a reinforcing rib 221 is set on the arc-shaped welding part 22. The arc-shaped openings of the two arc-shaped welding parts 22 are respectively welded to a shaft sleeve 42; two limiting claws 23 are set between the two arc-shaped welding parts 22, and the two limiting claws 23 are used to limit the flipping angle of the lower connecting bracket 3. An upper avoidance area 24 for accommodating a return torsion spring 43 is opened between the two limiting claws 23, and the root of one of the limiting claws 23 is hooked with one end of the return torsion spring 43.

[0030] See also Figure 1 , Figure 2 , Figure 4 , Figures 6 to 8 As shown: the lower connecting bracket 3 is arranged on the side of the slide rail and the slide rail bracket, and the lower connecting bracket 3 is connected to the upper connecting bracket 2 through the rotating shaft assembly 4; the lower connecting bracket 3 includes a lower connecting plate 31, and the lower connecting plate 31 is provided with a hanging part 32 that is hung with the other end of the return torsion spring 43, and the hanging part 32 is arranged below the lower connecting plate 31, and the left and right sides of the hanging part 32 are hollowed out, and the front and rear ends of the hanging part 32 are integrally connected with the lower connecting plate 31; the left side of the lower connecting plate 31 extends downward to a limit plate 33, and the limit plate 33 includes A bottom stopper 331 in contact with the stopper 1 and a rear end stopper 332 in contact with the side of the slide rail; a right welding plate 34 extends downwardly from the right side of the lower connecting plate 31; a rear welding plate 35 extends downwardly from the rear end of the lower connecting plate 31, and a lower avoidance area 351 for accommodating the return torsion spring 43 is provided on the rear welding plate 35, and an arc-shaped welding groove 352 is provided on the rear welding plate 35 in the left-right direction, and the arc-shaped welding groove 352 is welded to the rotating shaft 41, and the rotating shaft 41 is arranged above the rear end stopper 332;

[0031] The rotating shaft assembly 4 includes a rotating shaft 41, a shaft sleeve 42 installed at both ends of the rotating shaft 41, and a return torsion spring 43 installed between the two shaft sleeves 42, and the return torsion spring 43 is sleeved on the rotating shaft 41; the rotating handle 5 is installed on the lower connecting bracket 3, the rotating handle 5 is U-shaped, and the two ends of the rotating handle 5 are respectively welded to the limiting plate 33 and the right welding plate 34. When the rotating handle 5 is in the initial position, the return torsion spring 43 is in a relaxed state, the rear end limiting portion 332 contacts the side of the slide rail, the upper connecting bracket 2 is slid to the front end of the slide rail bracket, and the lower connecting bracket 3 contacts the stopper 1 to prevent the upper connecting bracket 2 from continuing to slide forward. At this time, when the rotating handle 5 is lifted, the return torsion spring 43 is in a compressed state, the lower connecting bracket 3 is separated from the stopper 1, the rear end limiting portion 332 is separated from the side of the slide rail, the lower connecting bracket 3 is in contact with the limiting claw 23, and the upper connecting bracket 2 can continue to slide forward.

[0032] Working process of the present invention: The simple external middle limit structure of the automobile seat slide rail provided by the present invention is symmetrically arranged on both sides of the automobile seat, and the stopper 1 is installed at the front end of the side of the slide rail bracket to play the role of middle limit, wherein the upper connecting bracket 2 slides along the slide rail together with the lower frame of the seat, and the position of the lower frame of the seat in the travel behind the stopper 1 can be adjusted during driving. When the lower frame of the seat moves to the position of the stopper 1, the stopper 1 and the bottom limit part 331 of the lower connecting bracket 3 contact each other, preventing the lower frame of the seat from continuing to slide forward, thereby ensuring safety during driving. When parking and resting, pull the rotating handle 5, the stopper 1 is separated from the lower connecting bracket 3, and the lower connecting bracket 3 is above the stopper 1. The lower frame of the seat can continue to slide forward, providing a sufficiently large placement space for the rear berth.

[0033] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A simple external middle position limit structure for a car seat slide rail, characterized in that: It includes a stopper, an upper connecting bracket, a lower connecting bracket, a rotating shaft assembly, and a rotating handle, wherein the stopper is installed at the front end of the side of the slide rail bracket; the upper connecting bracket is installed between the lower frame of the seat and the slide rail, and the upper connecting bracket slides along the slide rail together with the lower frame of the seat; the lower connecting bracket is arranged on the side of the slide rail and the slide rail bracket, and the lower connecting bracket is connected to the upper connecting bracket through the rotating shaft assembly; the rotating shaft assembly includes a rotating shaft, a bushing installed at both ends of the rotating shaft, and a return torsion spring installed between the two bushings, and the return torsion spring is sleeved on the rotating shaft. One end of the return torsion spring is hung with the upper connecting bracket, and the other end of the return torsion spring is hung with the lower connecting bracket; the rotating handle is installed on the lower connecting bracket, and when the rotating handle is in the initial position, the return torsion spring is in a relaxed state, and the upper connecting bracket is slid to the front end of the slide rail bracket, and the lower connecting bracket and the stopper contact each other to prevent the upper connecting bracket from continuing to slide forward. At this time, when the rotating handle is lifted, the return torsion spring is in a compressed state, and the lower connecting bracket is separated from the stopper, and the upper connecting bracket can continue to slide forward; The upper connecting bracket comprises an upper connecting plate, a front mounting hole and a rear mounting hole are provided on the upper connecting plate, a front bolt is installed on the slide rail through the front mounting hole, and a rear bolt is installed on the slide rail after passing through the lower frame of the seat and the rear mounting hole in sequence; two arc-shaped welding parts and two limiting claws are extended outward from the outer side of the upper connecting plate, the arc-shaped opening of the arc-shaped welding part is arranged downward, and the arc-shaped openings of the two arc-shaped welding parts are respectively welded to a shaft sleeve; the two limiting claws are arranged between the two arc-shaped welding parts, and the two limiting claws are used to limit the flipping angle of the lower connecting bracket, and an upper avoidance area for accommodating a return torsion spring is provided between the two limiting claws, and the root of one of the limiting claws is hooked with one end of the return torsion spring; The lower connecting bracket includes a lower connecting plate, and the lower connecting plate is provided with a hanging portion which is hung on the other end of the return torsion spring. The hanging portion is arranged under the lower connecting plate, and the left and right sides of the hanging portion are hollowed out, and the front and rear ends of the hanging portion are integrally connected with the lower connecting plate; a limiting plate is extended downwardly from the left side of the lower connecting plate, and the limiting plate includes a bottom limiting portion which contacts with the stop block and a rear end limiting portion which contacts with the side surface of the slide rail; a right welding plate is extended downwardly from the right side of the lower connecting plate; a rear welding plate is extended downwardly from the rear end of the lower connecting plate, and a lower avoidance area for accommodating the return torsion spring is provided on the rear welding plate, and an arc-shaped welding groove is provided on the rear welding plate in the left and right directions, and the arc-shaped welding groove is welded to the rotating shaft and the rotating shaft is arranged above the rear end limiting portion.

2. A simple external middle position limiting structure for a car seat slide rail as claimed in claim 1, characterized in that: The stopper includes a fixing plate having two bolt holes, and the fixing plate is fixedly mounted on the bottom end of the slide rail bracket by bolts, a clamping plate is extended upward on one side of the fixing plate, a protrusion is extended forward from the middle position of the front end of the clamping plate, and the protrusion is in contact with the side of the slide rail bracket, a triangular plate is extended inwardly from the upper end of the clamping plate, one side of the triangular plate is in contact with the side of the slide rail bracket, and the other side of the triangular plate and the rear end of the clamping plate are used to prevent the bottom end limit portion from moving forward.

3. A simple external middle position limiting structure for a car seat slide rail as claimed in claim 1, characterized in that: The rotating handle is U-shaped, and two ends of the rotating handle are respectively welded to the limiting plate and the right welding plate.

4. A simple external middle position limiting structure for a car seat slide rail as claimed in claim 1, characterized in that: The arc-shaped welding portion is provided with reinforcing ribs.

5. A simple external middle position limiting structure for a car seat slide rail as claimed in claim 2, characterized in that: The angle between the plane formed by the other side of the triangular plate and the rear end of the clamping plate and the side surface of the slide rail bracket is no greater than 90 degrees.

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