CN219277486U

CN219277486U - Seat backrest cushion linkage mechanism

Info

Publication number: CN219277486U
Application number: CN202320523747.XU
Authority: CN
Inventors: 刘航岐; 张金辉; 李鹏飞; 孙兆金; 刘丽丽; 翟磊; 黄彩红; 杨勇; 刘阿威
Original assignee: Tangshan Huada Rail Transit Equipment Co ltd
Current assignee: Tangshan Huada Rail Transit Equipment Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-06-30
Anticipated expiration: 2033-03-17

Abstract

The utility model relates to a seat backrest and seat cushion linkage mechanism, and belongs to the technical field of railway passenger car equipment. The technical proposal is as follows: the bottom of the backrest framework (1) is rotationally connected with the seat cushion framework (2) to form a seat framework; two sides of the seat framework are provided with armrest support arms (3), the bottoms of the armrest support arms are arranged on a bottom frame (10), and a gas spring mounting seat (11) is arranged on the bottom frame; the inner side surface of the armrest support arm is respectively provided with a first chute, a second chute and a third chute; the backrest framework is provided with a first shaft in a penetrating way, two ends of the first shaft are provided with a first sliding roller, and the first sliding roller is arranged in the first sliding groove in a rolling way; the side beam of the seat cushion framework is provided with a sliding roller II and a sliding roller III which are respectively arranged in the sliding groove II and the sliding groove III in a rolling way. The utility model has simple and reliable structure, can simultaneously adjust the angle of the backrest and the seat cushion by pulling the adjusting spanner, is convenient to operate, and greatly improves the comfort of the seat.

Description

Seat backrest cushion linkage mechanism

Technical Field

The utility model relates to a seat backrest and seat cushion linkage mechanism, and belongs to the technical field of railway passenger car equipment.

Background

With the rapid development of economy, the city is more and more intimate, and the train is one of the most main transportation modes of going out, and the passengers are required to have good comfort in the journey under the condition of meeting the time saving condition of high-speed running. The comfort of the seat, which is the most direct contact with the occupant, directly determines the comfort of the occupant riding. Almost all train seats in China are backrest-adjustable, so that fatigue of the upper half part of the body of a passenger is relieved to a great extent, but the lower half part of the body cannot be relaxed due to the fixed mode of the seat cushion, and people feel uncomfortable when riding for a long time.

Disclosure of Invention

The utility model aims to provide a seat backrest and seat cushion linkage mechanism which can adjust the angle of a seat cushion while adjusting the angle of a backrest, improve the comfort of passengers and solve the problems in the prior art.

The technical scheme of the utility model is as follows:

a novel seat backrest cushion linkage mechanism comprises a backrest framework, a seat cushion framework, an armrest support arm, an adjusting spanner, a gas spring, an adjusting brake cable, a first sliding roller, a second sliding roller, a third sliding roller, a bottom frame and a gas spring mounting seat, wherein the bottom of the backrest framework and the seat cushion framework are rotationally connected together to form the seat framework; the two sides of the seat framework are provided with armrest support arms, the bottoms of the armrest support arms are arranged on the underframe, the underframe is provided with a gas spring mounting seat, a back beam of the seat framework is connected with the gas spring mounting seat through a gas spring, the adjusting spanner is hinged to the side face of the seat framework, and the adjusting brake cable is respectively connected with the gas spring and the adjusting spanner; the inner side surface of the armrest support arm is respectively provided with a first chute, a second chute and a third chute; the backrest framework is provided with a first shaft in a penetrating way, two ends of the first shaft are provided with a first sliding roller, the first sliding roller is arranged in the first sliding groove in a rolling way, and the backrest framework can slide along the first sliding groove; the side beam of the seat cushion framework is provided with a sliding roller II and a sliding roller III which are respectively arranged in the sliding groove II and the sliding groove III in a rolling way, and the seat cushion framework can slide along the sliding groove II and the sliding groove III.

Further, the backrest framework consists of two L-shaped vertical supports and a connecting cross beam connected between the two vertical supports, a shaft is arranged between the two vertical supports in a penetrating way, and sliding rollers I are arranged at two ends of the shaft I; the bottoms of the two vertical supports extend into the lower part of the seat cushion framework and are provided with mounting sleeves, the two mounting sleeves are sleeved on the seat cushion framework, and the seat cushion framework is rotationally connected with the backrest framework.

Further, the cylinder body of the gas spring is connected with the mounting lug arranged on the back beam, and the piston rod of the gas spring is connected with the gas spring mounting seat.

When the sitting posture of a passenger needs to be adjusted, the adjusting spanner can be pulled upwards, the air spring is in an open state through the adjusting brake cable, the seat cushion framework slides in the second sliding groove and the third sliding groove along with the length change of the air spring, the backrest framework is driven to slide in the first sliding groove, the adjusting spanner is loosened at any position in an adjusting range, the air spring is locked, and the angle adjustment locking of the backrest framework and the seat cushion framework is achieved. The seat cushion framework has the advantages that the proper angle adjustment range of the seat cushion framework is 0-6 degrees (but not limited to 0-6 degrees), the proper angle adjustment range of the backrest framework is 0-14 degrees (but not limited to 0-14 degrees), and the seat has good comfort at any position in the adjustment range, so that the fatigue of passengers is relieved.

The utility model has the positive effects that: the chair has the advantages of simple and reliable structure and low cost, the angle of the backrest and the seat cushion can be adjusted simultaneously by moving the adjusting spanner, the operation is convenient, and the comfort of the chair is greatly improved.

Drawings

Fig. 1 is a sectional view of the present utility model in an initial state.

Fig. 2 is a sectional view of the present utility model in a limited state.

FIG. 3 is a front view of the present utility model;

FIG. 4 is a schematic diagram of the structure of the present utility model;

in the figure: the seat cushion comprises a backrest framework 1, a seat cushion framework 2, a rear beam 21, side beams 22, mounting lugs 23, a handrail support arm 3, a first sliding chute 31, a second sliding chute 32, a third sliding chute 33, an adjusting spanner 4, a gas spring 5, an adjusting brake cable 6, a first sliding roller 71, a second sliding roller 72, a mounting sleeve 8, bolts 9, a bottom frame 10, a gas spring mounting seat 11, a first shaft 12, a vertical support 13, a connecting cross beam 14 and a square tube 15.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

referring to fig. 1-4, the present embodiment provides a seat back and cushion linkage mechanism, which comprises a back frame 1, a cushion frame 2, a handrail arm 3, an adjusting wrench 4, a gas spring 5, an adjusting brake cable 6, a first sliding roller 71, a second sliding roller 72, a third sliding roller, a mounting sleeve 8, a bolt 9, a bottom frame 10, a gas spring mounting seat 11, a first shaft 12, a vertical support 13 and a connecting beam 14.

The backrest frame 1 is composed of two L-shaped vertical supports 13 and a plurality of connecting cross beams 14 connected between the two vertical supports 13. A first shaft 12 is horizontally penetrated between the two vertical supports 13, and sliding rollers 71 are arranged at two ends of the first shaft 12. The bottoms of the two vertical supports 13 extend into the lower part of the seat cushion framework 2 and are provided with the mounting sleeves 8, and the two mounting sleeves 8 are sleeved on the seat cushion framework, so that the seat cushion framework 2 is rotationally connected with the backrest framework 1.

Specifically, in this embodiment, the middle part of the seat cushion skeleton 2 is equipped with square pipe 15, and two installation cover 8 suit are at square pipe 15 both ends respectively, are equipped with the round hole on the pipe wall that square pipe 15 and installation cover 8 are adjacent, nested welding in square pipe 15 and with the round hole intercommunication, are equipped with the arc opening that sets up along circumference on the installation cover 8, and bolt 9 lower part runs through arc opening and round hole after with nested threaded connection, installation cover 8 can carry out circumference rotation along the arc opening, and bolt 9 also prescribes a limit to the transverse position of installation cover 8 simultaneously.

The two sides of the seat framework are provided with armrest support arms 3, the bottoms of the armrest support arms 3 are fixed on the underframe 10, the underframe 10 is provided with a gas spring mounting seat 11, the cylinder body of the gas spring 5 is connected with mounting lugs 23 arranged on a back beam 21 of the seat framework 2, and the piston rod of the gas spring 5 is connected with the gas spring mounting seat 11. The adjusting spanner 4 is hinged on the side face of the seat cushion framework 2 and can rotate up and down around a hinge point, and the adjusting brake cable 6 is respectively connected with the gas spring 5 and the adjusting spanner 4. The adjusting spanner controls the opening and closing states of the gas spring through adjusting the brake cable. The armrest support arm 3 is L-shaped and consists of a vertical support arm and a horizontal support arm, the inner side surface of the vertical support arm is provided with a first chute 31, the first chute 31 is a vertical chute, and a first sliding roller 71 on the backrest framework 1 is arranged in the first chute 31 in a rolling way. The inner side surface of the transverse support arm is sequentially provided with a second chute 32 and a third chute 33 from back to front, and the second chute 32 and the third chute 33 gradually incline downwards from back to front. The side beam 22 of the seat cushion framework 2 is provided with a second sliding roller 72 and a third sliding roller 72 from back to front, the second sliding roller 72 and the third sliding roller are respectively arranged in the second sliding groove 32 and the third sliding groove 33 in a rolling way, and the seat cushion framework 2 can slide along the second sliding groove 32 and the third sliding groove 33.

The backrest framework 1 is provided with two hinge points, one hinge point is that the backrest framework 1 is hinged with the armrest support arm 3 through the first shaft 12, and the other hinge point is that the backrest framework 1 is hinged with the seat cushion framework 2 through the mounting sleeve 8.

Referring to fig. 1, in the present embodiment, in the initial state, the seat cushion frame 2 is 0.5 ° to the horizontal direction, the backrest frame 1 is 1.5 ° to the vertical direction, the distance L1 between the forefront end of the seat cushion frame 2 and the forefront end of the underframe 10 is 110mm, at this time, the sliding roller one 71 is located at the top of the chute one, and the sliding roller two 72 and the sliding roller three are located at the rearmost ends of the chute two and the chute three, respectively. When the passenger needs to adjust the position of sitting, can upwards pull adjusting spanner 4, make air spring 5 be in the open state through adjusting brake cable 6, along with air spring 5's length shortens, when air spring 5 drove seat cushion skeleton 2 along spout two forward below gliding, because of air spring 5 applied pulling force, seat cushion skeleton 2 upwards lifts up, and then adjusts the angle of seat cushion skeleton 2 (seatpad). At the same time, the seat cushion framework 2 drives the backrest framework 1 to slide downwards along the first sliding chute, so as to adjust the angle of the backrest framework 1 (backrest).

Referring to fig. 2, in the present embodiment, in the limit state, the seat cushion frame 2 is 6.5 ° to the horizontal direction, the back frame 1 is 15.5 ° to the vertical direction, and the distance L2 between the forefront end of the seat cushion frame 2 and the forefront end of the underframe 10 is 182.5mm. At this time, the first sliding roller 71 is located at the bottommost end of the first sliding groove, and the second sliding roller 72 and the third sliding roller are located at the foremost ends of the second sliding groove and the third sliding groove, respectively.

The seat is adjusted to return to the initial state under the limit state, the adjusting spanner 4 can be pulled upwards, the gas spring 5 is in the open state through the adjusting brake cable 6, and the gas spring 5 drives the seat cushion framework 2 to slide upwards and backwards along the sliding groove II along with the length extension of the gas spring 5, and meanwhile, the seat cushion framework 2 returns to the original position due to the thrust exerted by the gas spring 5. At the same time, the seat cushion frame 2 pushes the backrest frame 1 to slide upward along the chute one to return to the original position.

The angle between the backrest framework 1 and the seat cushion framework 2 can be adjusted at will in the adjusting range, the adjusting spanner 4 is loosened at any position in the adjusting range, the air spring 5 is locked, the actions of the backrest framework 1 and the seat cushion framework 2 are locked, the angle adjustment is completed, and the riding comfort of passengers is improved greatly.

Claims

1. A novel seat back cushion linkage mechanism, which is characterized in that: the seat comprises a backrest framework (1), a seat cushion framework (2), an armrest support arm (3), an adjusting spanner (4), a gas spring (5), an adjusting brake cable (6), a first sliding roller (71), a second sliding roller (72), a third sliding roller, a bottom frame (10) and a gas spring mounting seat (11), wherein the bottom of the backrest framework (1) and the seat cushion framework (2) are rotationally connected together to form the seat framework; the two sides of the seat framework are provided with armrest support arms (3), the bottoms of the armrest support arms (3) are arranged on the underframe (10), the underframe (10) is provided with a gas spring mounting seat (11), a back beam (21) of the seat framework (2) is connected with the gas spring mounting seat (11) through a gas spring (5), an adjusting spanner (4) is hinged to the side face of the seat framework (2), and an adjusting brake cable (6) is respectively connected with the gas spring (5) and the adjusting spanner (4); the inner side surface of the armrest support arm (3) is respectively provided with a first chute (31), a second chute (32) and a third chute (33); the backrest framework (1) is provided with a first shaft (12) in a penetrating way, two ends of the first shaft (12) are provided with a first sliding roller (71), the first sliding roller (71) is arranged in the first sliding groove (31) in a rolling way, and the backrest framework (1) can slide along the first sliding groove (31); the side beam (22) of the seat cushion framework (2) is provided with a sliding roller II (72) and a sliding roller III, the sliding roller II (72) and the sliding roller III are respectively arranged in a sliding groove II (32) and a sliding groove III (33) in a rolling way, and the seat cushion framework (2) can slide along the sliding groove II (32) and the sliding groove III (33).

2. The novel seat back cushion linkage of claim 1, wherein: the backrest framework (1) consists of two L-shaped vertical supports (13) and a connecting cross beam (14) connected between the two vertical supports (13), a first shaft (12) is arranged between the two vertical supports (13) in a penetrating way, and sliding rollers (71) are arranged at two ends of the first shaft (12); the bottoms of the two vertical supports (13) extend into the lower part of the seat cushion framework (2) and are provided with mounting sleeves (8), the two mounting sleeves (8) are sleeved on the seat cushion framework (2), and the seat cushion framework (2) is rotationally connected with the backrest framework (1).

3. The novel seat back cushion linkage of claim 2, wherein: the cylinder body of the gas spring (5) is connected with a mounting lug (23) arranged on the back beam (21), and a piston rod of the gas spring (5) is connected with the gas spring mounting seat (11).