Seat leg extension support

Abstract

A seat leg extension support is used for solving the problems that in the prior art, a seat backrest in the prior art can rotate, after the backrest is rotated, the upper body of a relying person is in a semi-supine state, the legs of the relying person are still in direct contact with the ground, muscles of thighs of the relying person are tight, and the relying person cannot feel comfortable. The seat comprises a bottom plate, a plurality of supporting columns are fixedly arranged on the bottom plate and placed in a rectangular shape, a seat plate is fixedly arranged on the supporting columns, a backrest is rotatably arranged at the end of the seat plate, a leg support is rotatably arranged at the end, away from the backrest, of the seat plate, and an extension plate is slidably arranged on the leg support. Hollow armrest plates are fixedly arranged on the two opposite sides of the seat plate, first rotating assemblies used for rotating the backrest are arranged in the two armrest plates, and second rotating assemblies used for rotating the leg support are arranged between the backrest and the leg support.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, and particularly relates to a seat leg extension bracket. Background Art

[0002] As a main tool for work, rest and entertainment, a sofa can effectively relieve fatigue and relax the mood, and is a necessity in people's daily life.

[0003] For the seats of the prior art, such as the utility model patent document with the authorization announcement number of "CN218651096U" and the patent name of "Split-type invisible reclining sofa seat" discloses a sofa seat, including side plates. There are two side plates arranged front and back, and two transverse frames are fixedly connected in the middle between the two side plates. The right ends of the two transverse frames are fixedly connected with two vertical frames together. The left ends of the two transverse frames are fixedly connected with two brackets together. Buffer components are fixedly connected to the inner wall surfaces of the two brackets. Connecting components are fixedly connected to the outer sides of the two buffer components. A seat backrest is fixedly connected between the connecting components. A sofa cushion is fixedly connected to the right end of the seat backrest. Two bolts are threadedly connected to the right ends of the two brackets respectively.

[0004] In the above patent document, the backrest can rotate. After the backrest rotates, since the upper body of the relying person is in a semi-reclining state, the legs still directly contact the ground, which causes the muscles of the thighs of the relying person to be tense, and further reduces the riding experience of the relying person. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and propose a seat leg extension bracket, which is used to solve the technical problem that for the seats of the prior art, the backrest can rotate. After the backrest rotates, since the upper body of the relying person is in a semi-reclining state, the legs still directly contact the ground, which causes the muscles of the thighs of the relying person to be tense, and further reduces the riding experience of the relying person.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A seat leg extension bracket includes a bottom plate. A plurality of support columns are fixedly arranged on the bottom plate and are placed in a rectangle. A seat plate is fixedly arranged on the plurality of support columns. A backrest is rotatably arranged at the end of the seat plate. A leg rest is rotatably arranged at the end of the seat plate away from the backrest. An extension plate is slidably arranged on the leg rest. Hollow armrest plates are fixedly arranged on both opposite sides of the seat plate. A first rotation component for rotating the backrest is arranged in each of the two armrest plates. A second rotation component for rotating the leg rest is arranged between the backrest and the leg rest.

[0008] Working Principle:

[0009] When it is necessary to change the angles of the backrest and the leg rest, the rotation angle of the backrest can be changed through the first rotation assembly. When the backrest rotates, the backrest drives the second rotation assembly, and the second rotation assembly can drive the leg rest to complete the rotation, so as to synchronously change the rotation angles of the backrest and the leg rest. When it is necessary to extend the length of the leg rest, the extension plate can be slid on the leg rest to extend the length of the leg rest.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] First, a first rotation assembly is provided, and the first rotation assembly can change the reliance angle of the backrest, so as to facilitate the reliance of the passengers.

[0012] Second, a second rotation assembly is provided. When the backrest rotates, the backrest can drive the second rotation assembly, and the second rotation assembly can synchronously drive the leg rest to complete the rotation, which is convenient for the passengers to place their legs on the leg rest when relying.

[0013] Third, an extension plate is provided, and the extension plate can change the length of the leg rest, which is convenient for different passengers to support their legs well. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of an embodiment of the utility model;

[0015] Figure 2 It is a schematic structural diagram of the armrest plate and the sliding groove;

[0016] Figure 3 It is a schematic assembly structure diagram of the leg rest and the extension plate;

[0017] Figure 4 It is a schematic assembly structure diagram of the backrest and the guide groove;

[0018] Figure 5 It is a schematic assembly structure diagram of the headrest and the slider.

[0019] Description of the reference numerals: bottom plate 1, support column 2, seat plate 3, backrest 4, leg rest 5, extension plate 6, armrest plate 7, air cylinder 8, first fixing rod 9, first rotating plate 10, second fixing rod 11, second rotating plate 12, sliding groove 13, first rotating block 14, second rotating block 15, connecting rod 16, sliding slot 17, guide rod 18, guide groove 19, headrest 20, jack 21, slider 22, placement groove 24, spring 25, insertion block 26. Detailed Embodiments

[0020] The technical solutions in the utility model will be further described below with reference to the drawings and embodiments.

[0021] Embodiment:

[0022] As Figure 1 and Figure 3 shown, a leg extension bracket for a seat includes a bottom plate 1. A plurality of support columns 2 are fixedly arranged on the bottom plate 1 and are placed in a rectangle. A seat plate 3 is fixedly arranged on the plurality of support columns 2. Through the support columns 2, the seat plate 3 can obtain good support. A backrest 4 is rotatably arranged at the end of the seat plate 3. A leg rest 5 is rotatably arranged at the end of the seat plate 3 away from the backrest 4. An extension plate 6 is slidably arranged on the leg rest 5. Sliding grooves 17 are formed on both opposite sides of the leg rest 5. Guide rods 18 are fixedly arranged in both of the two sliding grooves 17. The two opposite ends of the extension plate 6 are respectively slidably arranged in the two sliding grooves 17 and the extension plate 6 is slidably connected with the two guide rods 18. The extension plate 6 can move on the guide rods 18 in the sliding grooves 17. Rubber is arranged between the connection of the extension plate 6 and the guide rods 18, which can increase the friction between the extension plate 6 and the guide rods 18 and is convenient for the extension plate 6 not to easily change its position after moving.

[0023] As Figure 1 and Figure 2 shown, hollow armrest plates 7 are fixedly arranged on both opposite sides of the seat plate 3. A first rotation assembly for rotating the backrest 4 is arranged in both of the two armrest plates 7. The first rotation assembly includes a cylinder 8, a first fixing rod 9, a first rotating plate 10, a second fixing rod 11 and a second rotating plate 12. The cylinder 8 is rotatably arranged on the bottom plate 1 and is located inside the armrest plate 7. The first fixing rod 9 is fixedly arranged inside the armrest plate 7. The first rotating plate 10 is rotatably arranged on the first fixing rod 9 and the telescopic end of the cylinder 8 is rotatably arranged on the first rotating plate 10. The second fixing rod 11 is fixedly arranged on the backrest 4. The second rotating plate 12 is rotatably arranged on the second fixing rod 11 and the end of the second rotating plate 12 away from the backrest 4 is rotatably connected with the first rotating plate 10. Sliding grooves 13 are formed on the opposite surfaces of the two armrest plates 7. The second fixing rod 11 is slidably connected with the sliding grooves 13. By the cylinder 8, the rotation angle of the first rotating plate 10 on the first fixing rod 9 can be changed. The first rotating plate 10 drives the second rotating plate 12, and thus the second rotating plate 12 drives the backrest 4 to rotate. The second fixing rod 11 can slide in the sliding grooves 13 of the armrest plates 7 when the backrest 4 rotates.

[0024] As Figure 1 and Figure 2As shown, a second rotating assembly for rotating the leg rest 5 is provided between the backrest 4 and the leg rest 5. The second rotating assembly includes a first rotating block 14, a second rotating block 15, and a connecting rod 16. The first rotating block 14 is fixedly provided on the backrest 4 and the first rotating block 14 is located at the end of the backrest 4 close to the seat board 3. The second rotating block 15 is fixedly provided on the leg rest 5. One end of the connecting rod 16 is rotatably provided on the first rotating block 14 and the other end is rotatably provided on the second rotating block 15. When the backrest 4 rotates, the first rotating block 14 also rotates accordingly. Thus, the first rotating block 14 pushes the connecting rod 16, the connecting rod 16 pushes the second rotating block 15, and thus the second rotating block 15 pushes the leg rest 5 to rotate on the seat board 3, and further synchronously completes the rotation of the backrest 4 and the leg rest 5, reducing the adjustment steps of the passengers.

[0025] As Figure 1 and Figure 4 and Figure 5 As shown, a guide groove 19 is provided on the side of the backrest 4 for human reliance. A headrest 20 is slidably provided in the guide groove 19. A plurality of jacks 21 are provided on the guide groove 19. A slider 22 is fixedly provided on the headrest 20. The slider 22 is slidably provided in the guide groove 19. A placement groove 24 is provided on the slider 22. A spring 25 is fixedly provided in the placement groove 24. An insertion block 26 is slidably provided in the placement groove 24 and the insertion block 26 is fixedly connected to the spring 25. The end of the insertion block 26 away from the spring 25 is clamped with any one of the insertion blocks 26 on the guide groove 19. The spring 25 can make the insertion block 26 closely adhere to the jack 21. Since the jack 21 is arranged in a wavy shape, the insertion block 26 can slide in the placement groove 24, and further change the position of the headrest 20 on the guide groove 19 and fix the position of the headrest 20.

[0026] Working principle:

[0027] When it is necessary to synchronously change the rotation angles of the backrest 4 and the leg rest 5, the passenger starts the cylinder 8. The cylinder 8 drives the first rotating plate 10 to rotate on the first fixed rod 9. The first rotating plate 10 drives the second rotating plate 12 to rotate on the second fixed rod 11. Thus, the second rotating plate 12 drives the backrest 4 to rotate. The second fixed rod 11 can move in the sliding groove 13 on the armrest plate 7, thereby changing the rotation angle of the backrest 4. When the backrest 4 rotates, the rotation of the backrest 4 drives the first rotating block 14 to rotate. The rotation of the first rotating block 14 pushes the connecting rod 16. The connecting rod 16 pushes the second rotating block 15. The second rotating block 15 can push the leg rest 5 to rotate on the seat board 3, and thus complete the synchronous rotation of the leg rest 5 driven by the rotation of the backrest 4.

[0028] When the passenger needs to extend the length of the leg rest 5, the extension plate 6 can be slid on the leg rest 5. The extension plate 6 slides on the sliding groove 17 and the guide rod 18 on the leg rest 5, thereby extending the length of the leg rest 5.

[0029] When the occupant needs to change the position of the headrest 20, the position of the movable headrest 20 on the guide groove 19 can be adjusted. Moving the headrest 20 drives the slider 22 to move within the guide groove 19. As a result, the insertion block 26 on the slider 22 is pressed against the jack 21 under the action of the spring 25, and thus the position of the headrest 20 can be fixed after the headrest 20 is moved.

[0030] 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 spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A seat leg extension bracket, characterized in that: The invention comprises a bottom plate (1), a plurality of support columns (2) are fixedly arranged on the bottom plate (1) and the plurality of support columns (2) are arranged in a rectangular shape, a seat plate (3) is fixedly arranged on the plurality of support columns (2), a backrest (4) is rotatably arranged at the end of the seat plate (3), a leg rest (5) is rotatably arranged at the end of the seat plate (3) away from the backrest (4), an extension plate (6) is slidably arranged on the leg rest (5), hollow armrest plates (7) are fixedly arranged on opposite sides of the seat plate (3), a first rotating assembly for rotating the backrest (4) is arranged in each of the two armrest plates (7), and a second rotating assembly for rotating the leg rest (5) is arranged between the backrest (4) and the leg rest (5).

2. The seat leg extension bracket according to claim 1, characterized in that: The first rotating assembly comprises a cylinder (8), a first fixed rod (9), a first rotating plate (10), a second fixed rod (11) and a second rotating plate (12); the cylinder (8) is rotatably arranged on the base plate (1) and is located inside the armrest plate (7); the first fixed rod (9) is fixed inside the armrest plate (7); the first rotating plate (10) is rotatably arranged on the first fixed rod (9) and the telescopic end of the cylinder (8) is rotatably arranged on the first rotating plate (10); the second fixed rod (11) is fixed on the backrest (4); the second rotating plate (12) is rotatably arranged on the second fixed rod (11) and the end of the second rotating plate (12) away from the backrest (4) is rotatably connected to the first rotating plate (10).

3. The seat leg extension bracket according to claim 2, characterized in that: A sliding groove (13) is provided on the opposite surfaces of the two armrest plates (7), and the second fixing rod (11) is slidably connected to the sliding groove (13).

4. The seat leg extension bracket according to claim 1, characterized in that: The second rotating assembly comprises a first rotating block (14), a second rotating block (15) and a connecting rod (16); the first rotating block (14) is fixedly mounted on the backrest (4) and the first rotating block (14) is located at the end of the backrest (4) close to the seat plate (3); the second rotating block (15) is fixedly mounted on the leg support (5); one end of the connecting rod (16) is rotatably mounted on the first rotating block (14) and the other end is rotatably mounted on the second rotating block (15).

5. The seat leg extension bracket according to claim 1, characterized in that: The leg support (5) is provided with sliding grooves (17) on opposite sides, and guide rods (18) are fixed in the two sliding grooves (17). The extension plate (6) is slidably arranged in the two sliding grooves (17) at opposite ends, and the extension plate (6) is slidably connected to the two guide rods (18).

6. The seat leg extension bracket according to claim 1, characterized in that: The backrest (4) is provided with a guide groove (19) on one side for a human body to lean on, and a headrest (20) is slidably arranged in the guide groove (19).

7. The seat leg extension bracket according to claim 6, characterized in that: The guide groove (19) is provided with a plurality of insertion holes (21); a slider (22) is fixedly provided on the headrest (20); the slider (22) is slidably arranged in the guide groove (19); a placement groove (24) is provided on the slider (22); a spring (25) is fixedly arranged in the placement groove (24); an insertion block (26) is slidably arranged in the placement groove (24); the insertion block (26) is fixedly connected to the spring (25); and the end of the insertion block (26) away from the spring (25) is clamped with any one of the insertion blocks (26) on the guide groove (19).

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