Seat waist adjusting device

Abstract

The utility model provides a seat waist adjusting device which is used for solving the technical problem that the comfort level of a user is reduced due to the fact that part of existing seats cannot be always attached to the waist of the user. The utility model discloses a seat waist adjusting device. The seat waist adjusting device comprises a first stress plate, one end of each first stress rod is hinged to the first stress plate; the other end of each first stress rod is hinged to the second stress plate; a second stress plate; the two first stress blocks are correspondingly and rotationally arranged at the ends, close to the first stress plate, of the two first stress rods; the first connecting shaft is rotationally arranged between the two first stress blocks, and the second stress block is fixedly arranged at one end of the first stress plate; one end of the air rod is rotationally connected with the first connecting shaft; by the adoption of the structure, the distance between the first stress plate and the second stress plate is adjusted, and then the waist supporting block is attached to the waist of a user.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a seat waist adjusting device. Background Art

[0002] A seat is a sitting tool with a backrest and sometimes armrests. In ancient times, people sat on the ground and there were no chairs originally. "Yi" was originally the name of a tree.

[0003] When a user sits on a seat, his waist will fit with the seat to relieve waist fatigue. However, when the user adjusts his sitting posture, it is difficult for the waist to always fit with the seat, resulting in a decrease in the user's comfort. Therefore, enabling the seat to adjust according to the user's sitting posture and ensuring that the seat fits with the user's waist can greatly improve the user's comfort. Content of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a seat waist adjusting device, which is used to solve the technical problem that some existing seats cannot always keep fitting with the user's waist, resulting in a decrease in the user's comfort.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] A seat waist adjusting device includes:

[0007] A first stress plate;

[0008] Two first stress rods, one end of each of the two first stress rods is hinged to the first stress plate;

[0009] A second stress plate, the second stress plate is opposite to the first stress plate, and the other ends of the two first stress rods are slidably and rotatably connected to the second stress plate;

[0010] Two second stress rods, one end of each of the two second stress rods is hinged to the second stress plate, and the other ends of the two second stress rods are slidably and rotatably connected to the first stress plate;

[0011] Two first stress blocks, the two first stress blocks are correspondingly rotatably arranged at one end of the two first stress rods close to the first stress plate;

[0012] A first connecting shaft, the first connecting shaft is rotatably arranged between the two first stress blocks, and the first connecting shaft is rotatably connected to one end of the two second stress rods close to the first stress plate;

[0013] A second stress block, the second stress block is fixedly arranged at one end of the first stress plate;

[0014] A pneumatic rod, one end of the pneumatic rod is rotatably connected to the first connecting shaft, and the other end of the pneumatic rod is fixedly connected to the second force-bearing block;

[0015] A sixth connecting shaft is rotatably arranged between the first force-bearing rod and the second force-bearing rod on the same side.

[0016] Working principle:

[0017] Fix the adjusting device at a certain position so that one end of the first force-bearing plate is fixed to the back of the seat and one end of the second force-bearing plate is fixed to the lumbar support block. When it is necessary to adjust the lumbar support block to make it fit the user's waist, open the pneumatic rod. The length of the pneumatic rod can be adjusted to push the lumbar support block to move. The lumbar support block drives the second force-bearing plate to move closer to the first force-bearing plate. The second force-bearing plate drives the second force-bearing rod and the first force-bearing rod to rotate around the sixth connecting shaft. One end of the second force-bearing rod close to the first force-bearing plate slides and rotates, and one end of the first force-bearing rod close to the second force-bearing plate slides and rotates;

[0018] When it is necessary for the first force-bearing plate and the second force-bearing plate to move away from each other, open the pneumatic rod. The pneumatic rod extends, and the pneumatic rod drives the first connecting shaft to move. The first connecting shaft drives one end of the second force-bearing rod close to the first force-bearing plate to move. And the second force-bearing rod will rotate around the sixth connecting shaft under the pushing action of the pneumatic rod. The rotation of the second force-bearing rod drives the second force-bearing plate to slide away from the first force-bearing plate. The movement of the second force-bearing plate drives the first force-bearing rod to rotate around the sixth connecting shaft, and one end of the first force-bearing rod close to the second force-bearing plate slides.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] Fix the adjusting device at a certain position so that one end of the first force-bearing plate is fixed to the back of the seat and one end of the second force-bearing plate is fixed to the lumbar support block. When it is necessary to adjust the lumbar support block to make it fit the user's waist, open the pneumatic rod. The length of the pneumatic rod can be adjusted to push the lumbar support block to move. The lumbar support block drives the second force-bearing plate to move closer to the first force-bearing plate. The second force-bearing plate drives the second force-bearing rod and the first force-bearing rod to rotate around the sixth connecting shaft. One end of the second force-bearing rod close to the first force-bearing plate slides and rotates, and one end of the first force-bearing rod close to the second force-bearing plate slides and rotates;

[0021] When it is necessary for the first force-bearing plate and the second force-bearing plate to move away from each other, open the pneumatic rod. The pneumatic rod extends, and the pneumatic rod drives the first connecting shaft to move. The first connecting shaft drives one end of the second force-bearing rod close to the first force-bearing plate to move. And the second force-bearing rod will rotate around the sixth connecting shaft under the pushing action of the pneumatic rod. The rotation of the second force-bearing rod drives the second force-bearing plate to slide away from the first force-bearing plate. The movement of the second force-bearing plate drives the first force-bearing rod to rotate around the sixth connecting shaft, and one end of the first force-bearing rod close to the second force-bearing plate slides;

[0022] By means of the air rod drive, the first force-bearing rod and the second force-bearing rod cooperate with each other to drive the first force-bearing plate and the second force-bearing plate to move closer or farther away, thereby driving the waist support block to move, and further enabling the waist support block to fit closely with the user's waist. Brief Description of the Drawings

[0023] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the present utility model;

[0024] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0025] Figure 3 It is a schematic cross-sectional structure diagram of the sixth force-bearing block of an embodiment of the present utility model;

[0026] Figure 4 It is a schematic structure diagram of the first force-bearing plate of an embodiment of the present utility model from another perspective;

[0027] Figure 5 It is a schematic diagram of the working state of the transmission block of an embodiment of the present utility model;

[0028] Figure 6 It is a schematic diagram of another working state of the transmission block of an embodiment of the present utility model;

[0029] Figure 7 It is a schematic installation structure diagram of an embodiment of the present utility model.

[0030] In the above-mentioned drawings: 10, force-bearing spring; 11, seventh force-bearing block; 12, fourth connecting shaft; 13, first force-bearing plate; 14, sixth connecting shaft; 15, second force-bearing rod; 16, third force-bearing block; 17, second connecting shaft; 18, second force-bearing plate; 19, fifth connecting shaft; 20, fourth force-bearing block; 21, third limiting groove; 22, first force-bearing rod; 23, connecting plate; 24, air rod; 25, fifth force-bearing block; 26, first connecting shaft; 27, transmission block; 28, third connecting shaft; 29, first force-bearing block; 30, second limiting groove; 31, limiting sleeve; 32, pull rope; 33, sixth force-bearing block; 34, valve; 35, second force-bearing block; 36, telescopic spring; 37, dial; 38, third force-bearing rod; 39, seventh connecting shaft; 40, installation groove; 41, first limiting groove; 42, nut. Detailed Embodiment

[0031] The technical solutions in the present utility model will be further described below in conjunction with the drawings and embodiments.

[0032] Embodiment:

[0033] As Figure 1 , Figure 2, Figure 5 , Figure 6 and Figure 7 As shown in ,

[0034] , a seat lumbar adjustment device includes:

[0034] A first stress plate 13;

[0035] Two first stress rods 22, one end of each of the two first stress rods 22 is hinged to the first stress plate 13;

[0036] A second stress plate 18, the second stress plate 18 is opposite to the first stress plate 13, and the other ends of the two first stress rods 22 are slidably and rotatably connected to the second stress plate 18;

[0037] Two second stress rods 15, one end of each of the two second stress rods 15 is hinged to the second stress plate 18, and the other ends of the two second stress rods 15 are slidably and rotatably connected to the first stress plate 13;

[0038] Two first stress blocks 29, the two first stress blocks 29 are correspondingly rotatably arranged at one end of the two first stress rods 22 close to the first stress plate 13;

[0039] A first connecting shaft 26, the first connecting shaft 26 is rotatably arranged between the two first stress blocks 29, and the first connecting shaft 26 is rotatably connected to one end of the two second stress rods 15 close to the first stress plate 13;

[0040] A second stress block 35, the second stress block 35 is fixedly arranged at one end of the first stress plate 13;

[0041] A pneumatic rod 24, one end of the pneumatic rod 24 is rotatably connected to the first connecting shaft 26, and the other end of the pneumatic rod 24 is fixedly connected to the second stress block 35;

[0042] A sixth connecting shaft 14 is rotatably arranged between the first stress rod 22 and the second stress rod 15 on the same side;

[0043] The first stress plate 13 is concave-shaped, and first limiting grooves 41 are symmetrically and throughly arranged on both side surfaces of the first stress plate 13. The first connecting shaft 26 passes through the two first limiting grooves 41, and the first connecting shaft 26 is reciprocally slidably arranged along the length direction of the first limiting grooves 41;

[0044] Fix the adjusting device in a certain position so that one end of the first force-bearing plate 13 is fixed to the seat back and one end of the second force-bearing plate 18 is fixed to the lumbar support block. When it is necessary to adjust the lumbar support block so that the lumbar support block fits the user's waist, open the air rod 24. The length of the air rod 24 can be adjusted to push the lumbar support block to move. The lumbar support block drives the second force-bearing plate 18 to move closer to the first force-bearing plate 13. The second force-bearing plate 18 drives the second force-bearing rod 15 and the first force-bearing rod 22 to rotate around the sixth connecting shaft 14. One end of the second force-bearing rod 15 close to the first force-bearing plate 13 slides and rotates, and one end of the first force-bearing rod 22 close to the second force-bearing plate 18 slides and rotates;

[0045] It also includes two transmission blocks 27. The first connecting shaft 26 and the third connecting shaft 28 are rotatably arranged between the two transmission blocks 27, and the two transmission blocks 27 are attached to both sides of the first force-bearing plate 13

[0046] When it is necessary for the first force-bearing plate 13 and the second force-bearing plate 18 to move away from each other, open the air rod 24. The air rod 24 extends, and the air rod 24 drives the first connecting shaft 26 to move. The first connecting shaft 26 drives one end of the second force-bearing rod 15 close to the first force-bearing plate 13 to move. And the second force-bearing rod 15 will rotate around the sixth connecting shaft 14 under the pushing action of the air rod 24. The rotation of the second force-bearing rod 15 drives the second force-bearing plate 18 to slide away from the first force-bearing plate 13. The movement of the second force-bearing plate 18 drives the first force-bearing rod 22 to rotate around the sixth connecting shaft 14, and one end of the first force-bearing rod 22 close to the second force-bearing plate 18 slides;

[0047] Through the driving method of the air rod 24, the first force-bearing rod 22 and the second force-bearing rod 15 cooperate with each other to drive the first force-bearing plate 13 and the second force-bearing plate 18 to move closer or farther away, thereby driving the lumbar support block to move, and further enabling the lumbar support block to fit the user's waist.

[0048] Such as Figure 1 and Figure 2As shown, two third force blocks 16 are fixedly arranged at one end of the second force plate 18 close to the first force plate 13. A second connecting shaft 17 is rotatably arranged on each third force block 16. The second force rod 15 is fixedly connected to the corresponding second connecting shaft 17. Second limiting grooves 30 are symmetrically and penetratingly arranged on both side surfaces of the first force plate 13. A third connecting shaft 28 is fixedly arranged at the other end of each second force rod 15. The third connecting shaft 28 is slidably arranged in the corresponding second limiting groove 30. Fourth connecting shafts 12 are fixedly arranged at one end of the two first force rods 22 close to the first force plate 13. Each fourth connecting shaft 12 is rotatably connected to the first force plate 13. Two symmetric fourth force blocks 20 are fixedly arranged at one end of the second force plate 18 close to the first force plate 13. A third limiting groove 21 is penetratingly arranged on each fourth force block 20. A fifth connecting shaft 19 is fixedly arranged at one end of each first force rod 22 close to the second force plate 18. The fifth connecting shaft 19 is slidably arranged in the third limiting groove 21. With this connection method, when one end of the second force rod 15 close to the first force plate 13 is pushed in the horizontal direction, the second force rod 15 cooperates with the first force rod 22, enabling the second force plate 18 and the first force plate 13 to move closer to or away from each other.

[0049] As Figure 1 shown, a connecting plate 23 is fixedly arranged between the two second force rods 15, and the connecting plate 23 plays a role in stabilizing the two second force rods 15.

[0050] As Figure 1 shown, a fifth force block 25 is fixedly arranged at the fixed end of the air rod 24. The fifth force block 25 is fixedly arranged on the first connecting shaft 26. The telescopic end of the air rod 24 has a thread. A nut 42 is threadedly connected to the telescopic end of the air rod 24. The nut 42 abuts against the second force block 35. A sixth force block 33 is threadedly connected to one end of the telescopic end of the air rod 24 passing through the second force block 35. A valve 34 is arranged on the telescopic end of the air rod 24. An installation groove 40 is penetratingly arranged on the first force plate 13. When installing the air rod 24, part of the air rod 24 will extend into the installation groove 40. Pressing the valve 34, the air rod 24 can automatically extend when not affected by external forces, and will shorten when external forces are applied.

[0051] As Figure 1 and Figure 3As shown, a seventh connecting shaft 39 is fixedly provided on the sixth force-bearing block 33. A paddle 37 is rotatably provided on the seventh connecting shaft 39. The other end of the paddle 37 is provided with a third force-bearing rod 38 passing through it. A pull rope 32 is fixedly provided on the third force-bearing rod 38. By pulling the pull rope 32, the pull rope 32 drives the paddle 37 to rotate around the seventh connecting shaft 39 through the third force-bearing rod 38. The paddle 37 rotates to press the valve 34, and the length of the air rod 24 can be adjusted. The distance between the first force-bearing plate 13 and the second force-bearing plate 18 can be adjusted. Whether the air rod 24 can extend or contract is controlled by the valve 34, which is a conventional technical means and thus will not be described in detail in the specification.

[0052] As Figure 1 shown, a limiting sleeve 31 is rotatably threaded through the sixth force-bearing block 33. The pull rope 32 passes through the limiting sleeve 31. A telescopic spring 36 is connected between the paddle 37 and the sixth force-bearing block 33. The pull rope 32 passes through the telescopic spring 36. By releasing the pull rope 32, the telescopic spring 36 pushes the paddle 37 to rotate, so that the paddle 37 no longer presses the valve 34.

[0053] As Figure 1 shown, two seventh force-bearing blocks 11 are fixedly provided on the first force-bearing plate 13. A force-bearing spring 10 is provided between each seventh force-bearing block 11 and the first connecting shaft 26. With this structure, after the valve 34 is pressed, the force-bearing spring 10 can better drive the first connecting shaft 26 to move closer to the fourth connecting shaft 12.

[0054] Working principle:

[0055] When the position of the waist support block needs to be adjusted, pull the pull rope 32. The pull rope 32 drives the paddle 37 to rotate around the seventh connecting shaft 39 through the third force-bearing rod 38. The paddle 37 presses the valve 34. At this time, the air rod 24 is in an adjustable state. Press the second force-bearing plate 18, and the second force-bearing plate 18 moves closer to the first force-bearing plate 13. The second force-bearing plate 18 drives the second force-bearing rod 15 to rotate around the sixth connecting shaft 14 through the second connecting shaft 17, and the second force-bearing rod 15 drives the third connecting shaft 28 to move closer to the second force-bearing block 35 along the second limiting groove 30. The third connecting shaft 28 drives the first connecting shaft 26 to move through the transmission block 27. The first connecting shaft 26 drives the air rod 24 to contract. The second force-bearing plate 18 drives the fifth connecting shaft 19 to move through the fourth force-bearing block 20. The fifth connecting shaft 19 drives the first force-bearing rod 22 to rotate around the sixth connecting shaft 14. The fifth connecting shaft 19 moves in the third limiting groove 21. After the adjustment is completed, release the pull rope 32, and the telescopic spring 36 pushes the paddle 37 to rotate. After the paddle 37 rotates, it no longer presses the valve 34;

[0056] Pull the pull cord 32. The pull cord 32 drives the paddle 37 to rotate around the seventh connecting shaft 39 through the third force-bearing rod 38. The paddle 37 presses the valve 34. At this time, the air rod 24 is in an adjustable state. The air rod 24 extends under its own action. The air rod 24 pushes the first connecting shaft 26 to move through the fifth force-bearing block 25. The first connecting shaft 26 drives the third connecting shaft 28 to move through the transmission block 27. The movement of the third connecting shaft 28 causes the second transmission rod 15 to rotate around the sixth connecting shaft 14. The second transmission rod 15 drives the third force-bearing block 16 to move through the second connecting shaft 17. The third force-bearing block 16 drives the second force-bearing plate 18 to move away from the first force-bearing plate 13. The second force-bearing plate 18 drives the fifth connecting shaft 19 to move through the fourth force-bearing block 20. The fifth connecting shaft 19 drives the first force-bearing rod 22 to rotate around the sixth connecting shaft 22.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A seat waist adjustment device, characterized in that: include: A first load-bearing plate (13); Two first force-bearing rods (22), one end of each of the two first force-bearing rods (22) being hinged to the first force-bearing plate (13); A second force-bearing plate (18), the second force-bearing plate (18) is opposite to the first force-bearing plate (13), and the other ends of the two first force-bearing rods (22) are slidably and rotatably connected to the second force-bearing plate (18); Two second force-bearing rods (15), one end of each of the two second force-bearing rods (15) is hinged to the second force-bearing plate (18), and the other end of each of the two second force-bearing rods (15) is slidably and rotationally connected to the first force-bearing plate (13); Two first force-bearing blocks (29), the two first force-bearing blocks (29) are rotatably arranged correspondingly at one end of the two first force-bearing rods (22) close to the first force-bearing plate (13); A first connecting shaft (26), the first connecting shaft (26) is rotatably arranged between the two first force-bearing blocks (29), and the first connecting shaft (26) is rotatably connected to one end of the two second force-bearing rods (15) close to the first force-bearing plate (13); A second force-bearing block (35), wherein the second force-bearing block (35) is fixedly mounted on one end of the first force-bearing plate (13); A gas rod (24), one end of the gas rod (24) is rotatably connected to the first connecting shaft (26), and the other end of the gas rod (24) is fixedly connected to the second force-bearing block (35); A sixth connecting shaft (14) is rotatably provided between the first force-bearing rod (22) and the second force-bearing rod (15) on the same side.

2. A seat waist adjustment device according to claim 1, characterized in that: The first force-bearing plate (13) is concave-shaped, and first limiting grooves (41) are symmetrically provided on both side surfaces of the first force-bearing plate (13). The first connecting shaft (26) passes through the two first limiting grooves (41), and the first connecting shaft (26) is reciprocatingly slidably arranged along the length direction of the first limiting grooves (41).

3. A seat waist adjustment device according to claim 1, characterized in that: Two third force blocks (16) are fixedly provided at one end of the second force-bearing plate (18) close to the first force-bearing plate (13), and a second connecting shaft (17) is rotatably provided on each of the third force-bearing blocks (16). The second force-bearing rods (15) are fixedly connected to the corresponding second connecting shafts (17). Second limiting grooves (30) are symmetrically provided on both side surfaces of the first force-bearing plate (13), and a third connecting shaft (28) is fixedly provided at the other end of each of the second force-bearing rods (15), and the third connecting shaft (28) is slidably arranged in the corresponding second limiting grooves (30).

4. A seat waist adjustment device according to claim 1, characterized in that: A fourth connecting shaft (12) is fixedly provided at one end of the two first force-bearing rods (22) close to the first force-bearing plate (13), and each of the fourth connecting shafts (12) is rotatably connected to the first force-bearing plate (13). Two symmetrical fourth force-bearing blocks (20) are fixedly provided at one end of the second force-bearing plate (18) close to the first force-bearing plate (13), and each of the fourth force-bearing blocks (20) is provided with a third limiting groove (21) extending therethrough. A fifth connecting shaft (19) is fixedly provided at one end of each first force-bearing rod (22) close to the second force-bearing plate (18), and the fifth connecting shaft (19) is slidably arranged in the third limiting groove (21).

5. The seat waist adjustment device according to claim 1, characterized in that: A connecting plate (23) is fixedly arranged between the two second force-bearing rods (15).

6. A seat waist adjustment device according to claim 2, characterized in that: A fifth force-bearing block (25) is fixedly arranged at the fixed end of the gas rod (24), and the fifth force-bearing block (25) is fixedly arranged on the first connecting shaft (26). A thread is arranged on the telescopic end of the gas rod (24), and a nut (42) is threadedly connected to the telescopic end of the gas rod (24), and the nut (42) abuts against the second force-bearing block (35). The telescopic end of the gas rod (24) passes through one end of the second force-bearing block (35) and is threadedly connected to the sixth force-bearing block (33). A valve (34) is arranged on the telescopic end of the gas rod (24), and a mounting groove (40) is opened through the first force-bearing plate (13).

7. A seat waist adjustment device according to claim 6, characterized in that: A seventh connecting shaft (39) is fixedly arranged on the sixth force-bearing block (33), a paddle (37) is rotatably arranged on the seventh connecting shaft (39), a third force-bearing rod (38) is passed through the other end of the paddle (37), and a pull rope (32) is fixedly arranged on the third force-bearing rod (38).

8. A seat waist adjustment device according to claim 7, characterized in that: A limiting sleeve (31) is threadedly rotatably provided on the sixth force-bearing block (33), the pull rope (32) passes through the limiting sleeve (31), a telescopic spring (36) is connected between the paddle (37) and the sixth force-bearing block (33), and the pull rope (32) passes through the telescopic spring (36).

9. The seat waist adjustment device according to claim 1, characterized in that: Two seventh force-bearing blocks (11) are fixedly arranged on the first force-bearing plate (13), and a force-bearing spring (10) is arranged between each of the seventh force-bearing blocks (11) and the first connecting shaft (26).

10. The seat waist adjustment device according to claim 1, characterized in that: It also includes two transmission blocks (27), the first connecting shaft (26) and the third connecting shaft (28) are rotatably arranged between the two transmission blocks (27), and the two transmission blocks (27) are closely arranged on both sides of the first force-bearing plate (13).

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