Seat adjusting linkage device

Abstract

The utility model relates to the technical field of seat adjustment, and provides a seat adjustment linkage device which comprises two bottom columns, a transverse rod is fixedly installed on the tops of the opposite sides of the two bottom columns, inserting blocks are movably installed on the left side and the right side of an inner cavity of the transverse rod, and a plurality of inserting rods are fixedly installed in the middles of the other sides of the inserting blocks. A circular groove is formed in the middle of the bottom of an inner cavity of the transverse rod, and a limiting groove is formed in the left side of an inner cavity of the circular groove. According to the seat adjusting linkage device, through matched use of a cylindrical structure and a clamping rod structure, when the seat adjusting linkage device works, a cylinder rotates to drive an inserting block to contract through an inserting rod and a gear, and at the moment, the height between an inner column and a bottom column can be changed, so that the height of a seat plate is changed, and the use requirements of students with different heights are met; the torsion shaft, the clamping rod and the bulge are used for driving the cushion to rotate, so that the student is prevented from pressing the same position of the cushion for a long time, and the effects of quickly adjusting the height of the seat and timely adjusting the angle of the cushion to meet the daily learning requirements of different students in different areas are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of seat adjustment, and specifically, to a seat adjustment linkage device. Background Art

[0002] Traditional seats are generally ordinary chairs, usually made of wood, plastic, or iron. Most of them have a backrest, and a few benches in schools have no backrest. Most of these seats have a fixed structure. Since students of the same age do not have exactly the same height, not all students can use the same seat, which may cause discomfort to some students when they go to school, affecting their learning progress.

[0003] After retrieval, the Chinese patent publication number is CN215382653U, which discloses a new type of intelligent seat. In this patent, by setting up electric seat wheels, seat bearing brackets, lifting components, intelligent seat power supply batteries, intelligent seat cushions, intelligent seat armrests, backrest adjustment mechanisms, and intelligent seat backs, functions such as sedentary reminder, shoulder massage, electric lifting adjustment, intelligent monitoring, OCR recognition, and intelligent voice control are integrated. The seat design conforms to the ergonomic structure and can be linked with an intelligent desk to achieve data connection.

[0004] However, the seats in the above patent use too many modern machines, which are difficult to be widely used in some poor schools. At the same time, the device cannot adjust the seat cushion angle in time, resulting in students sitting in the same position for a long time, which is not only uncomfortable but also causes serious wear on some areas of the seat cushion. Content of the Utility Model

[0005] The utility model provides a seat adjustment linkage device, which has the advantages of quickly adjusting the seat height and timely adjusting the seat cushion angle to meet the daily learning needs of different students in different regions, and solves the problems of high cost, narrow application range, and difficulty in timely adjusting the seat cushion angle in the related technology.

[0006] The technical solution of the utility model is as follows: A seat adjustment linkage device includes two bottom columns. On the top of the opposite sides of the two bottom columns, a cross bar is fixedly installed. On the left and right sides of the inner cavity of the cross bar, insertion blocks are movably installed. In the middle of the other side of the insertion block, a plurality of insertion rods are fixedly installed. In the middle of the bottom of the inner cavity of the cross bar, a circular groove is opened. On the left side of the inner cavity of the circular groove, a limiting groove is opened. In the middle of the inner cavity of the circular groove, a telescopic rod is movably installed. On the left side of the outer surface of the telescopic rod, a limiting block is fixedly installed. On the top of the telescopic rod, a gear is fixedly installed. On the top of the gear, a cylinder is fixedly installed. In the middle of the outer surface of the cylinder, an anti-slip sleeve is fixedly installed. On the top of the outer surface of the cylinder, a torsion shaft is fixedly installed. On the front side of the torsion shaft, a clamping rod is rotatably installed. In the inner cavity of the bottom column, an inner column is movably installed. In the middle of the inner column, a plurality of slot holes are opened.

[0007] Preferably, a seat board is fixedly installed at the top of the inner column, a seat cushion is movably installed on the top of the seat board, a telescopic column is fixedly installed at the bottom of the seat cushion, a plurality of protrusions are fixedly installed on the inner wall of the bottom inner cavity of the telescopic column, and a backboard is fixedly installed at the rear side of the top of the seat board.

[0008] Preferably, the shape of one side of the insertion block facing the bottom column matches the shape of the inner cavity of the insertion slot. The insertion slots are evenly distributed on the surface of the inner column. Thus, when in use, the insertion block extends into the inner cavity of the insertion slot to fix the inner column and the bottom column.

[0009] Preferably, the other sides of the left and right insertion blocks are respectively located on the front and rear sides of the gear. The shape and distribution position of the insertion rod match the shape and distribution position of the outer surface of the gear. Thus, when in use, the gear rotates, and drives the left and right insertion blocks to move through the insertion rod, thereby controlling whether the insertion blocks are inserted into the insertion slots opened on the surfaces of the left and right inner columns.

[0010] Preferably, the shape of the cross-section of the combination of the telescopic rod and the limit block matches the shape of the combination of the circular groove and the limit groove. Thus, when in use, the telescopic rod is lifted and stretched, so that the limit block moves out of the inner cavity of the limit groove. At this time, the telescopic rod and its top structure can all rotate.

[0011] Preferably, the clamping rod is movably installed at the top of the cylinder through a torsion shaft, and a torsion spring is arranged in the inner cavity of the torsion shaft.

[0012] Preferably, the stretchable length of the telescopic column matches the adjustable length of the inner column and the bottom column.

[0013] Preferably, the shape of the bottom inner cavity of the telescopic column matches the shape of the outer surface of the top of the cylinder. The telescopic column at the bottom of the seat cushion passes through the through hole in the middle of the seat board and extends into the top of the cylinder.

[0014] The working principle and beneficial effects of the present utility model are as follows:

[0015] 1. For this seat adjustment linkage device, through the combined use of the cylindrical structure and the clamping rod structure, during operation, when the cylinder rotates, it drives the insertion block to contract through the insertion rod and the gear. At this time, the height between the inner column and the bottom column can be changed, thereby changing the height of the seat board to meet the use of students with different heights. After adjustment, rotate the cylinder in the reverse direction, and use the torsion shaft, the clamping rod and the protrusions to drive the seat cushion to rotate, avoiding students pressing the same position of the seat cushion for a long time, achieving the effect of quickly adjusting the seat height and timely adjusting the seat cushion angle, so as to meet the daily learning needs of different students in different regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0017] Figure 1 It is a front external view schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the appearance of the overall structure of the utility model after being cut apart;

[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at A;

[0020] Figure 4 For this utility model Figure 2 Schematic diagram of the structure at point B.

[0021] In the figure: 1. base column; 2. cross bar; 3. plug block; 4. plug rod; 5. round groove; 6. limit groove; 7. telescopic rod; 8. limit block; 9. gear; 10. cylinder; 11. anti-slip sleeve; 12. torque shaft; 13. clamping rod; 14. inner column; 15. slot; 16. seat plate; 17. cushion; 18. telescopic column; 19. protrusion; 20. back plate. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4As shown in the figure, a seat adjustment linkage device includes two bottom columns 1. At the top of the opposite sides of the two bottom columns 1, a cross bar 2 is fixedly installed. On the left and right sides of the inner cavity of the cross bar 2, insertion blocks 3 are movably installed. In the middle of the other side of the insertion block 3, a plurality of insertion rods 4 are fixedly installed. In the middle of the bottom of the inner cavity of the cross bar 2, a circular groove 5 is opened. On the left side of the inner cavity of the circular groove 5, a limiting groove 6 is opened. In the middle of the inner cavity of the circular groove 5, a telescopic rod 7 is movably installed. On the left side of the outer surface of the telescopic rod 7, a limiting block 8 is fixedly installed. The combined cross-sectional shape of the telescopic rod 7 and the limiting block 8 matches the combined shape of the circular groove 5 and the limiting groove 6. Therefore, when in use, the telescopic rod 7 is pulled upward, so that the limiting block 8 moves out of the inner cavity of the limiting groove 6. At this time, the telescopic rod 7 and its top structure can all rotate. At the top of the telescopic rod 7, a gear 9 is fixedly installed. At the top of the gear 9, a cylinder 10 is fixedly installed. In the middle of the outer surface of the cylinder 10, an anti-slip sleeve 11 is fixedly installed. At the top of the outer surface of the cylinder 10, a torsion shaft 12 is fixedly installed. On the front side of the torsion shaft 12, a clamping rod 13 is rotatably installed. The clamping rod 13 is movably installed with the top of the cylinder 10 through the torsion shaft 12. A torsion spring is arranged in the inner cavity of the torsion shaft 12. In the inner cavity of the bottom column 1, an inner column 14 is movably installed. In the middle of the inner column 14, a plurality of insertion slots 15 are opened. The shape of the side of the insertion block 3 facing the bottom column 1 matches the shape of the inner cavity of the insertion slot 15. The insertion slots 15 are evenly distributed on the surface of the inner column 14. Therefore, when in use, the insertion block 3 extends into the inner cavity of the insertion slot 15 to fix the inner column 14 and the bottom column 1. The other sides of the left and right insertion blocks 3 are respectively located in front of and behind the gear 9. The shape and distribution position of the insertion rod 4 match the shape and distribution position of the outer surface of the gear 9. Therefore, when in use, the gear 9 rotates, and drives the left and right insertion blocks 3 to move through the insertion rod 4, so as to control whether the insertion block 3 is inserted into the insertion slot 15 opened on the surface of the left and right inner columns 14. At the top of the inner column 14, a seat plate 16 is fixedly installed. On the top of the seat plate 16, a seat cushion 17 is movably installed. At the bottom of the seat cushion 17, a telescopic column 18 is fixedly installed. The stretchable length of the telescopic column 18 matches the adjustable length of the inner column 14 and the bottom column 1. The shape of the inner cavity at the bottom of the telescopic column 18 matches the shape of the outer surface at the top of the cylinder 10. The telescopic column 18 at the bottom of the seat cushion 17 passes through the through hole in the middle of the seat plate 16 and extends into the top of the cylinder 10. On the inner wall of the inner cavity at the bottom of the telescopic column 18, a plurality of protrusions 19 are fixedly installed. At the rear side of the top of the seat plate 16, a back plate 20 is fixedly installed.

[0024] Working principle: During operation, first assemble all the structures correctly. During use, when it is necessary to adjust the overall height, first drive the cylinder 10 to move upward through the anti-slip sleeve 11, so that the telescopic rod 7 moves upward and stretches, and the limit block 8 moves out of the inner cavity of the limit groove 6. Then rotate the cylinder 10 and the gear 9, and drive the left and right insertion blocks 3 to contract into the inner cavity of the cross bar 2 through the insertion rod 4, so that the insertion block 3 is separated from the insertion slot 15, facilitating the up and down movement of the inner column 14 in the bottom column 1. At this time, due to the installation position of the torsion shaft 12, when the cylinder 10 rotates with the gear 9, although the latch 13 also rotates accordingly, due to the installation position of the torsion shaft 12, every time it passes through the protrusion 19, it will rotate and fold through. When the position adjustment of the inner column 14 is completed, rotate the cylinder 10 and the gear 9 in the reverse direction through the anti-slip sleeve 11. Under the action of the insertion rod 4, the left and right insertion blocks 3 move in the reverse direction and enter the insertion slot 15 opened in the inner cavity of the inner column 14 to fix the moved inner column 14. At the same time, the rotation of the cylinder 10 drives the top torsion shaft 12 and the latch 13 to rotate. At this time, the position of the torsion shaft 12 is on the front side of the rotation direction. Therefore, when the latch 13 contacts the protrusion 19, the torsion shaft 12 cannot rotate. At this time, the rotation of the cylinder 10 drives the telescopic column 18 and the seat cushion 17 to rotate through the latch 13 and the protrusion 19, so as to change the position of the seat cushion 17. After adjustment, press down the cylinder 10 to make the telescopic rod 7 contract, and the limit block 8 moves into the inner cavity of the limit groove 6 to fix the cylinder 10 and prevent it from rotating on its own.

[0025] In summary, compared with general similar devices, this seat adjustment linkage device has the advantages of quickly adjusting the seat height and timely adjusting the angle of the seat cushion 17 to meet the daily learning needs of different students in different regions.

[0026] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seat adjustment linkage device, characterized in that: The invention comprises two bottom columns (1), a cross bar (2) is fixedly installed on the top of one side opposite to the other of the two bottom columns (1), plug blocks (3) are movably installed on both the left and right sides of the inner cavity of the cross bar (2), a plurality of plug rods (4) are fixedly installed in the middle of the other side of the plug block (3), a circular groove (5) is provided in the middle of the bottom of the inner cavity of the cross bar (2), a limiting groove (6) is provided on the left side of the inner cavity of the circular groove (5), a telescopic rod (7) is movably installed in the middle of the inner cavity of the circular groove (5), and the left side of the outer surface of the telescopic rod (7) is fixed A limit block (8) is installed, a gear (9) is fixedly installed on the top of the telescopic rod (7), a cylinder (10) is fixedly installed on the top of the gear (9), an anti-slip sleeve (11) is fixedly installed in the middle of the outer surface of the cylinder (10), a torsion shaft (12) is fixedly installed on the top of the outer surface of the cylinder (10), a clamping rod (13) is rotatably installed on the front side of the torsion shaft (12), an inner column (14) is movably installed in the inner cavity of the bottom column (1), and a plurality of slots (15) are opened in the middle of the inner column (14).

2. A seat adjustment linkage device according to claim 1, characterized in that: A seat plate (16) is fixedly mounted on the top of the inner column (14), a seat cushion (17) is movably mounted on the top of the seat plate (16), a telescopic column (18) is fixedly mounted on the bottom of the seat cushion (17), a plurality of protrusions (19) are fixedly mounted on the inner wall of the inner cavity at the bottom of the telescopic column (18), and a back plate (20) is fixedly mounted on the rear side of the top of the seat plate (16).

3. A seat adjustment linkage device according to claim 1, characterized in that: The shape of one side of the insert block (3) facing the bottom column (1) matches the shape of the inner cavity of the slot (15), and the slots (15) are evenly distributed on the surface of the inner column (14).

4. A seat adjustment linkage device according to claim 1, characterized in that: The other sides of the left and right insert blocks (3) are respectively located at the front and rear sides of the gear (9), and the shape and distribution position of the insert rod (4) match the shape and distribution position of the outer surface of the gear (9).

5. A seat adjustment linkage device according to claim 1, characterized in that: The shape of the cross section after the telescopic rod (7) and the limiting block (8) are combined matches the shape of the circular groove (5) and the limiting groove (6) after they are combined.

6. A seat adjustment linkage device according to claim 1, characterized in that: The clamping rod (13) is movably mounted on the top of the cylinder (10) via a torsion shaft (12), and a torsion spring is arranged in the inner cavity of the torsion shaft (12).

7. A seat adjustment linkage device according to claim 2, characterized in that: The stretchable length of the telescopic column (18) matches the adjustable length of the inner column (14) and the bottom column (1).

8. The seat adjustment linkage device according to claim 2, characterized in that: The shape of the inner cavity at the bottom of the telescopic column (18) matches the shape of the outer surface of the top of the cylinder (10), and the telescopic column (18) at the bottom of the seat cushion (17) passes through the through hole in the middle of the seat plate (16) and extends into the top of the cylinder (10).

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