Locking adjusting mechanism for sliding seat cushion of seat

Abstract

The utility model discloses a seat sliding cushion locking adjusting mechanism, and belongs to the technical field of rail transit vehicle seats. The device is provided with a button and a brake cable. The limiting assembly is fixedly connected to the seat framework; the limiting assembly is provided with a limiting base, a linkage rod and a connecting frame, wherein the linkage rod is slidably connected with the limiting base, and the top end of the linkage rod is provided with a limiting rack. The middle of the connecting frame is rotationally connected with the limiting base through a second shaft, and a driving hole movably connected with the linkage rod is formed in the lower portion of the connecting frame. The brake cable and the second spring are mounted at the top of the connecting frame and used for driving the connecting frame to rotate and driving the linkage rod to be linked through the driving hole, so that the limiting rack is meshed with or separated from a rack on a cushion framework; and the tail end of the brake cable is provided with the button for providing pulling force for the brake cable. The brake cable has the beneficial effects of being simple and reliable in structure, convenient and fast to maintain and repair and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit vehicle seats, in particular to a seat sliding cushion locking adjustment mechanism. Background Art

[0002] With the rapid development of rail transit, the functional requirements for passenger seats are increasing. Multifunctional adjustable seat structures with backrest adjustment, seat cushion adjustment, and backrest and seat cushion linkage adjustment have gradually become the preferred application solution for rail buses.

[0003] At present, in the seat structure of the prior art, the seat cushion can be adjusted forward and backward, and the seat back cushion can be adjusted forward and backward in linkage, the limiting structure adopted is mostly realized in the form of electric mechanism and gas spring mechanism. Both of the above-mentioned two types of mechanisms have the problems of complex structure, inconvenient repair and maintenance, and high repair cost. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide a seat sliding cushion locking adjustment mechanism with simple structure, convenient maintenance and repair and low cost.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The seat sliding cushion locking and adjusting mechanism disclosed in the utility model comprises:

[0007] Buttons, brake cables; and

[0008] A limiter assembly fixedly connected to the seat frame;

[0009] The limiting assembly comprises a limiting seat, a linkage rod slidably connected to the limiting seat and having a limiting rack at the top, and a connecting frame;

[0010] The middle part of the connecting frame is rotatably connected to the limit seat through a second shaft, and the lower part of the connecting frame is provided with a driving hole movably connected to the linkage rod;

[0011] The brake wire and the second spring are installed on the top of the connecting frame, which are used to drive the connecting frame to rotate and drive the linkage rod to move through the driving hole, so that the limit rack is engaged with or separated from the rack on the seat frame;

[0012] The button for providing pulling force is installed at the end of the brake line.

[0013] Furthermore, an axial hole and a guide hole are provided on an ear plate spaced apart at one end of the limit seat, the guide hole is slidably connected to the connecting rod, the second shaft is installed on the axial hole, and a hanging hole for hanging the second spring is provided at the other end of the limit seat.

[0014] Furthermore, the guide hole is a through hole with a square structure, the cross section of the connecting rod is adapted to the cross section of the guide hole, and the end of the connecting rod is movably connected to the oblong driving hole through a shaft.

[0015] Furthermore, the second spring is arranged above the limiting seat, one end of the second spring is connected to the hanging hole of the limiting seat, and the other end of the second spring extends obliquely upward to be connected to the connecting frame.

[0016] Furthermore, the connecting frame includes two connecting members, the second shaft and the third shaft connecting the two connecting members, and the third shaft is sleeved with a fixing sleeve for spacing the two connecting members.

[0017] Furthermore, the connecting member includes a connecting body and a connecting sub-body formed at one end of the connecting body and extending obliquely upward;

[0018] The connecting body is provided with the driving hole, and the connecting body is provided with shaft holes for installing the second shaft and the third shaft on both sides of the driving hole;

[0019] The top end of the connecting body is provided with a hanging hole for hanging the second spring and a hanging rod fixedly connected with the brake wire.

[0020] Furthermore, it also includes a button adapter, which is detachably connected to the button, the button adapter is rotatably connected to the seat cover via a first axis, the button is exposed outside the seat, and the end of the button adapter is connected to a first spring and the brake wire;

[0021] The first spring is connected to a spring hanging plate installed on the cover shell at an end away from the button adapter.

[0022] Furthermore, the spring hanging plate is arranged below the button adapter, and the top end of the spring hanging plate is obliquely connected to the first spring.

[0023] Furthermore, the top end of the linkage rod is detachably connected to a limiting block, and the limiting rack is formed on the upper surface of the limiting block.

[0024] Furthermore, the limit seat is provided with a mounting hole, and is fixedly connected to the crossbeam of the seat frame through the mounting hole.

[0025] In the above technical solution, the seat sliding cushion locking adjustment mechanism provided by the utility model has the following beneficial effects:

[0026] Compared with the prior art, the seat sliding cushion locking and adjusting mechanism drives the brake wire through a button and cooperates with the spring to manually control the limit assembly. When a force is applied to the button, the brake wire pulls the connecting frame of the limit assembly to rotate clockwise, driving the linkage to move, and the limit rack unlocks the cushion frame, so that the cushion can be adjusted freely. When the button loses its force, the connecting frame rotates counterclockwise under the action of the spring to reset and drive the linkage to move, and the limit rack locks the cushion frame, and the cushion position is fixed. The seat sliding cushion locking and adjusting mechanism has the advantages of simple and reliable structure, convenient operation, complete functions, low maintenance cost, convenient maintenance, and components that can be disassembled and replaced individually. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is an axonometric diagram of the seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0029] Figure 2 It is an exploded view of the seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0030] Figure 3 It is an axonometric diagram of a limit assembly of a seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0031] Figure 4 It is an exploded view of the limit assembly of the seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0032] Figure 5 It is a schematic diagram of the engagement state of the limit rack of the seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0033] Figure 6 It is an exploded view of the button of the seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0034] Figure 7 It is an exploded view of the spring hanging plate of the seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0035] Figure 8 It is a schematic diagram of the unlocked state of the seat sliding cushion locking adjustment mechanism disclosed in the utility model;

[0036] Fig. 9 The utility model discloses a schematic diagram of a locking state of a seat sliding cushion locking adjustment mechanism.

[0037] Description of reference numerals:

[0038] 10. Button;

[0039] 20. Button adapter; 21. Bolt; 22. Housing mounting hole; 23. Spring hanging hole; 24. Brake wire mounting hole; 25. First axis;

[0040] 30. Spring hanging plate;

[0041] 40. First spring;

[0042] 50. Gate line;

[0043] 60. Limiting assembly; 61. Limiting rack; 611. Bolt; 62. Linking rod; 63. Limiting seat; 631. Guide hole; 64. Connecting piece; 641. Connecting split; 642. Driving hole; 643. Second axis; 644. Third axis; 65. Hanging rod; 66. Fixing sleeve; 67. Second spring;

[0044] 70. Seat frame; 71. Cover;

[0045] 80. Seat frame; 82. Rack. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0047] See also Figure 1 , 2 As shown;

[0048] The utility model seat sliding cushion locking adjustment mechanism comprises: a button 10, a brake line 50, and a limit assembly 60 fixedly connected to a seat frame 70;

[0049] The limiting assembly 60 comprises a limiting seat 63, a linkage rod 62 which is slidably connected to the limiting seat 63 and has a limiting rack 61 at the top, and a connecting frame;

[0050] The middle part of the connecting frame is rotatably connected to the limit seat 63 through the second shaft 643, and the lower part of the connecting frame is provided with a driving hole 642 movably connected to the linkage rod 62;

[0051] A brake wire 50 and a second spring 67 are installed on the top of the connecting frame, which are used to drive the connecting frame to rotate and drive the connecting rod 62 to move through the driving hole 642, so that the limiting rack 61 engages or disengages with the rack 82 on the seat cushion frame 80, wherein a button 10 is installed at the end of the brake wire 50 to provide it with pulling force.

[0052] Specifically, in this structure, a brake wire 50 is connected between the button 10 and the limit assembly 60, the button 10 is exposed outside the seat, and the limit assembly 60 is manually controlled by the button 10. When a force is applied to the button 10, the brake wire 50 pulls the connecting frame to rotate clockwise. When the button 10 loses the force, the connecting frame rotates counterclockwise and resets under the action of the second spring 67;

[0053] When in use, the user presses the button 10, and the button 10 provides a pulling force for the brake wire 50 to drive the connecting frame of the limit assembly 60 to move, and drives the linkage rod 62 to move, so that it can realize the descending action. When the linkage rod 62 descends, the limit rack 61 at the top of the linkage rod 62 is separated from the rack 82 on the seat frame 80, and the seat frame 80 can slide freely to adjust the position. When the button 10 loses the external force, the second spring 67 drives the connecting frame of the limit assembly 60 to move, and drives the linkage rod 62 to move, so that it can realize the lifting action. When the linkage rod 62 rises, the limit rack 61 at the top of the linkage rod 62 is engaged with the rack 82 on the seat frame 80, and the position of the seat frame 80 is locked;

[0054] See also Figure 3 , 4 As shown, the limiting assembly 60 includes a limiting rack 61, a linkage rod 62, a limiting seat 63, a connecting frame, a hanging rod 65, a fixing sleeve 66, and a second spring 67;

[0055] The connecting frame includes two connecting members 64, a second shaft 643 and a third shaft 644 connecting the two connecting members 64, and a fixing sleeve 66 is sleeved on the third shaft 644 to separate the two connecting members 64;

[0056] In this structure, the limit seat 63 is the main part of the limit assembly 60, and the limit seat 63 is provided with a mounting hole, and is fixedly connected to the crossbeam of the seat frame 70 through the mounting hole, that is, the position of the limit seat 63 is fixed, and an ear plate for mounting the linkage rod 62 and two connecting members 64 is formed at one end of the upper part of the limit seat 63, and an axial hole and a guide hole 631 are provided on the ear plate;

[0057] Preferably, the guide hole 631 on the ear plate is a through hole of a square structure, the cross section of the linkage rod 62 is adapted to the cross section of the guide hole 631, the linkage rod 62 is slidably connected with the guide hole 631, and the linkage rod 62 is guided to rise and fall, the end of the linkage rod 62 is movably connected with the oblong driving hole 642 through the shaft, the shaft hole on the ear plate is installed with the second shaft 643, and the limit seat 63 is provided with a hanging hole for hanging the second spring 67 at the end away from the ear plate;

[0058] Preferably, the second spring 67 is disposed above the limiting seat 63, one end of the second spring 67 is connected to the hanging hole of the limiting seat 63, and the other end of the second spring 67 extends obliquely upward to be connected to the connecting piece 64 of the connecting frame.

[0059] The connecting member 64 is constructed in a V-shaped structure, which includes a connecting body and a connecting split body 641 formed at one end of the connecting body and extending obliquely upward. The connecting body is provided with a driving hole 642 that is slidably connected to the end of the connecting rod 62. Shaft holes are provided at both ends of the connecting body for respectively installing a second shaft 643 and a third shaft 644. The second shaft 643 and the third shaft 644 are bolts in the prior art. The two connecting members 64 are located on the side of the connecting split body 641. The second shaft 643 penetrates the connecting bodies and two ear plates of the two connecting members 64, so that the connecting members 64 are connected to the limit seat 63 and the connecting members 64 can rotate around the second shaft 643. The through holes at the ends of the connecting bodies of the two connecting members 64 are provided with the third shaft 644. The third shaft sleeve is provided with a fixing sleeve 66. The end of the fixing sleeve 66 contacts the connecting member 64 so as to support the two connecting members 64.

[0060] The two connecting members 64 are located at the ends of the connecting parts 641 and are hooked and connected with the second spring 67 through the hanging hole. The other end of the second spring 67 is hooked and connected with the hanging hole at the front end of the limiting seat 63. The second spring 67 provides a driving force to pull the connecting member 64 to rotate counterclockwise around the second axis 643 and drive the linkage rod 62 to move upward along the guide hole 631 through the driving hole 642, so that the limiting rack 61 is kept in mesh with the rack 82 installed under the seat frame 80, thereby locking the position of the seat frame 80.

[0061] The connecting body 641 is fixedly connected with a hanging rod 65 at one side of the hanging hole. The hanging rod 65 can be fixedly connected with the connecting body 641 by welding. The hanging rod 65 is connected with the brake wire 50 through the wire hole and the wire. The position-limiting seat 63 is provided with a through hole corresponding to the hanging rod 65, through which the brake wire 50 can pass. When in use, the button 10 rotates to pull the brake wire 50 to tighten, and the connection piece 64 is pulled by the brake wire 50 to overcome the elastic force of the second spring 67 to make the connection piece 64 rotate clockwise around the second axis 643, so that the connection piece 64 moves the linkage rod 62 downward along the guide hole 631 through the driving hole 642, so that the limiting rack 61 is separated from the rack 82 installed below the seat frame 80, and the seat frame 80 slides freely.

[0062] Preferably, the limiting block is detachably connected to the linkage rod 62, and a limiting rack 61 is formed on the upper surface of the limiting block. Specifically, the limiting block is provided with a threaded hole, and the bottom of the linkage rod 62 and the limiting seat 63 is provided with a mounting hole, and the limiting block is fastened to the linkage rod 62 by passing a bolt 611 through the mounting hole of the limiting seat 63, see Figure 5 As shown, a rack 82 is installed under the seat frame 80 for engaging with the limiting rack 61 in the limiting assembly 60;

[0063] See also Figure 6 As shown:

[0064] Preferably, the button 10 and the button adapter 20 are detachably fixedly connected, the button 10 is provided with a mounting hole, the button adapter 20 is provided with a threaded hole, and the button 10 is fixedly connected to the button adapter 20 in a horizontal direction by a bolt 21;

[0065] See also Figure 6 As shown, a threaded hole for mounting a bolt 21 is provided at the front end of the button adapter 20, a cover mounting hole 22 is provided in the middle of the button adapter 20, a spring hanging hole 23 for hooking the first spring 40 is provided at the bottom of the rear end of the button adapter 20, and a brake wire mounting hole 24 connected to the brake wire 50 is provided at the top, the cover mounting hole 22 of the button adapter 20 is rotatably connected to the cover 71 through the first shaft 25, and the button adapter 20 can be rotated along the cover mounting hole 22 after installation, and the first shaft 25 is connected to the cover 71 through bolts;

[0066] See also Figure 7 As shown, a spring hanging plate 30 is installed on the cover shell 71, and the spring hanging plate 30 is arranged below the button adapter 20. The top end of the spring hanging plate 30 is obliquely connected to the first spring 40. Specifically, the spring hanging plate 30 is provided with a mounting hole, and the cover shell 71 is provided with a threaded hole. The spring hanging plate 30 is fixedly connected to the cover shell 71 in a horizontal direction by a bolt 31. The spring hanging plate 30 is hooked and connected with the first spring 40 through the hanging hole, and the other end of the first spring 40 is hooked and connected with the spring hanging hole 23 below the rear end of the button adapter 20. When in use, the button 10 is pressed to overcome the tension of the first spring 40, and the button adapter 20 rotates counterclockwise around the first axis 25, thereby tightening the brake line 50.

[0067] In the above technical solution, the seat sliding cushion locking adjustment mechanism provided by the utility model has the following working principle:

[0068] See also Figure 8 As shown, when the button 10 is pressed, the button adapter 20 rotates counterclockwise along the first axis 25, and the brake wire 50 is in a tightened state.

[0069] When the brake wire 50 is in the tightened state, it drives the connecting member 64 in the limiting seat 63 to move clockwise and downward along the second axis 643 .

[0070] When the connecting member 64 moves downward, the linkage rod 62 is driven to move downward along the guide hole 631 of the connecting member 64 .

[0071] When the linkage rod 62 moves downward, it drives the limit rack 61 to descend and become a compressed state. At this time, the seat cushion can be adjusted forward and backward.

[0072] See also Fig. 9 As shown, when the button 10 is released, the button adapter 20 rotates clockwise along the first axis 25 due to the pulling force of the first spring 40, and the brake wire 50 is in the initial state.

[0073] When the brake wire 50 is in the initial state, the tension on the connecting member 64 in the limiting seat 63 disappears, and after being pulled by the second spring 67 , the connecting member 64 moves upward counterclockwise along the second axis 643 .

[0074] When the connecting member 64 moves upward, the linkage rod 62 is driven to move upward along the guide hole 631 of the connecting member 64 .

[0075] When the linkage rod 62 moves upward, it drives the limit rack 61 to rise and become the initial state. At this time, the seat cushion is locked.

[0076] In the above technical scheme, the seat sliding cushion locking and adjusting mechanism provided by the utility model drives the brake wire 50 through the button 10, and cooperates with the spring to manually control the limit assembly 60. When a force is applied to the button 10, the brake wire 50 pulls the connecting frame of the limit assembly 60 to rotate clockwise, driving the linkage 62 to move, and the limit rack 61 unlocks the cushion frame 70, and the cushion can be adjusted freely. When the button 10 loses its force, the connecting frame rotates counterclockwise and resets under the action of the spring to drive the linkage 62 to move, and the limit rack 61 locks the cushion frame 70, and the cushion position is fixed. The seat sliding cushion locking and adjusting mechanism has the advantages of simple and reliable structure, convenient operation, complete functions, low maintenance cost, convenient maintenance, and components that can be disassembled and replaced individually.

[0077] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A seat sliding cushion locking adjustment mechanism, characterized in that: include: Button (10), brake wire (50); as well as A position limiting assembly (60) fixedly connected to a seat frame (70); The limiting assembly (60) comprises a limiting seat (63), a linkage rod (62) slidably connected to the limiting seat (63) and having a limiting rack (61) at the top, and a connecting frame; The middle part of the connecting frame is rotatably connected to the limiting seat (63) via a second shaft (643), and the lower part of the connecting frame is provided with a driving hole (642) movably connected to the linkage rod (62); The brake wire (50) and the second spring (67) are installed on the top of the connecting frame, and are used to drive the connecting frame to rotate and drive the linkage rod (62) to move through the driving hole (642), so that the limiting rack (61) is engaged with or separated from the rack (82) on the seat cushion frame (80); The button (10) for providing a pulling force thereto is installed at the end of the brake wire (50).

2. The seat sliding cushion locking adjustment mechanism according to claim 1, It is characterized by: An axial hole and a guide hole (631) are provided on an ear plate spaced apart at one end of the limit seat (63), the guide hole (631) is slidably connected to the linkage rod (62), the second shaft (643) is mounted on the axial hole, and a hanging hole for hanging the second spring (67) is provided at the other end of the limit seat (63).

3. The seat sliding cushion locking adjustment mechanism according to claim 2, characterized in that ； The guide hole (631) is a through hole with a square structure, the cross section of the connecting rod (62) is adapted to the cross section of the guide hole (631), and the end of the connecting rod (62) is movably connected to the oblong driving hole (642) through a shaft.

4. The seat sliding cushion locking adjustment mechanism according to claim 2, characterized in that ； The second spring (67) is arranged above the limiting seat (63); one end of the second spring (67) is connected to the hanging hole of the limiting seat (63), and the other end of the second spring (67) extends obliquely upward and is connected to the connecting frame.

5. The seat sliding cushion locking adjustment mechanism according to claim 1 or 2, characterized in that ； The connecting frame comprises two connecting members (64), the second shaft (643) and the third shaft (644) connecting the two connecting members (64), and the third shaft (644) is sleeved with a fixing sleeve (66) for spacing the two connecting members (64).

6. The seat sliding cushion locking adjustment mechanism according to claim 5, characterized in that ； The connecting member (64) comprises a connecting body and a connecting sub-body (641) formed at one end of the connecting body and extending obliquely upward; The connecting body is provided with the driving hole (642), and the connecting body is provided with shaft holes for installing the second shaft (643) and the third shaft (644) on both sides of the driving hole (642); The top end of the connecting body (641) is provided with a hanging hole for hanging the second spring (67) and a hanging rod (65) fixedly connected to the brake wire (50).

7. The seat sliding cushion locking adjustment mechanism according to claim 1, characterized in that ； It also includes a button adapter (20) which is detachably connected to the button (10), the button adapter (20) being rotatably connected to a seat cover (71) via a first shaft (25), the button (10) being exposed outside the seat, and a first spring (40) and the brake wire (50) being connected to the end of the button adapter (20); The end of the first spring (40) away from the button adapter (20) is connected to a spring hanging plate (30) mounted on the cover (71).

8. The seat sliding cushion locking adjustment mechanism according to claim 7, characterized in that ； The spring hanging plate (30) is arranged below the button adapter (20), and the top end of the spring hanging plate (30) is obliquely connected to the first spring (40).

9. The seat sliding cushion locking adjustment mechanism according to claim 1, characterized in that; The top end of the linkage rod (62) is detachably connected to a limiting block, and the limiting rack (61) is formed on the upper surface of the limiting block.

10. The seat sliding cushion locking adjustment mechanism according to claim 1, characterized in that ； The limiting seat (63) is provided with a mounting hole, and is fixedly connected to the crossbeam of the seat frame (70) through the mounting hole.

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