Lifting chair base

Abstract

The utility model relates to the technical field of lifting chairs, in particular to a lifting chair base which comprises a supporting seat body, an air pressure rod is fixedly connected to the middle of the upper end of the supporting seat body, a sitting body is fixedly connected to the upper end of the air pressure rod, and a cushion is fixedly connected to the upper end of the sitting body. A backrest plate is fixedly connected to the rear portion of the upper end of the sitting body, the sitting body comprises a first circular plate, three sets of circular rods are movably clamped to the first circular plate in an annular array penetrating and inserting mode, limiting plates are fixedly connected to the lower ends of the three sets of circular rods, and first springs are fixedly connected between the three sets of limiting plates and the first circular plate. Rectangular grooves are formed in the left portion and the right portion of the upper end of the first circular plate correspondingly, and first sliding grooves are formed in the middles of the front inner walls and the middles of the rear inner walls of the two sets of rectangular grooves correspondingly. According to the lifting chair base, the impact force on the air pressure rod when a user sits down can be reduced, and the lifting chair can be conveniently moved and carried.

Description

Technical Field

[0001] The utility model relates to the technical field of lift chairs, in particular to a lift chair base. Background Art

[0002] Lift chairs are liked by many people because they can adjust the height according to the user, so they are very common in life. There are still some defects and deficiencies in the lift chair base. The specific areas that need to be improved are as follows: 1. When someone sits on the upper part of the lift chair base, it has a large impact on the lower pneumatic rod. Therefore, a buffer structure needs to be added to reduce the pressure on the pneumatic rod; 2. The lower bases of lift chairs are all made of metal or alloy, which is heavy, so it is difficult to carry or move. Therefore, we have proposed a lift chair base. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a lift chair base, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A lift chair base includes a support seat main body. A pneumatic rod is fixedly connected to the middle of the upper end of the support seat main body. A seating main body is fixedly connected to the upper end of the pneumatic rod. A seat cushion is fixedly connected to the upper end of the seating main body. A backrest board is fixedly connected to the rear part of the upper end of the seating main body.

[0006] Preferably, the seating main body includes a first circular plate. Three circular rods are inserted and movably clamped in an annular array on the first circular plate. The lower ends of the three circular rods are all fixedly connected with limiting plates. A first spring is fixedly connected between each of the three limiting plates and the first circular plate. Rectangular grooves are formed in the middle of the front inner wall and the rear inner wall of the upper left part and the upper right part of the first circular plate. First sliding grooves are formed in the middle of the front inner wall and the rear inner wall of the two rectangular grooves. A buffer main body is movably arranged inside the two rectangular grooves. The upper ends of the three circular rods are fixedly connected with a second circular plate together.

[0007] By adopting the above technical solution: The seat cushion is made of sponge material, which can increase the comfort of the buttocks, and when the first spring is stretched, it can reduce the downward pressure.

[0008] Preferably, the buffer main body includes two upper and lower mounting ears. A transmission rod is movably connected between the two mounting ears through a rotating shaft. A connecting block is fixedly connected to the lower end of the lower mounting ear. A rectangular block is fixedly connected to the middle of the front end and the middle of the rear end of the connecting block. A damper is fixedly connected to the left end of the connecting block. A second spring is fixedly connected to the left end of the damper.

[0009] By adopting the above technical solution: The second spring and the damper can conveniently reduce the downward pressure and prevent the second spring from being excessively squeezed and jittered.

[0010] Preferably, the upper mounting ear is fixedly connected to the second circular plate. The connecting block and the damper are both located inside the rectangular groove. The second spring is fixedly connected to the inner wall of the adjacent rectangular groove. The rectangular block is snap-fitted with the adjacent first sliding groove. The first circular plate is fixedly connected to the pneumatic rod. The second circular plate is fixedly connected to the seat cushion and the backrest plate.

[0011] By adopting the above technical solution: The rectangular block is snap-fitted with the second sliding groove, which can fix the position of the connecting block and prevent it from slipping out of the rectangular groove.

[0012] Preferably, the support seat body includes a bottom plate. Limit grooves are provided at both the front end and the rear end of the bottom plate. A set of circular holes are provided at both the left end and the right end of the bottom plate. A lifting ring is inserted and movably snap-fitted on the outer end of the bottom plate. Insertion rods are inserted and movably snap-fitted at both the left end and the right end of the lifting ring. Restriction blocks are fixedly connected to both the front part and the rear part of the inner wall of the lifting ring. Rollers are fixedly connected to both the left part and the right part of the lower end of the lifting ring.

[0013] By adopting the above technical solution: The rollers at the lower end of the lifting ring can facilitate the movement of the upper structure and the handling of the lift chair.

[0014] Preferably, the bottom plate is fixedly connected to the lower end of the pneumatic rod. The restriction block is movably snap-fitted with the adjacent limit groove 7. The insertion rod is snap-fitted with the adjacent circular hole.

[0015] By adopting the above technical solution: The insertion rod is snap-fitted with the circular hole, which can fix the position of the lifting rod.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] 1. By providing the seating body, the first spring at the lower end of the round rod on the support seat body can be stretched when the upper part is under pressure, reducing the downward impact force. In addition, a buffer body is provided between the first circular plate and the second circular plate. The transmission rod on the buffer body transmits the downward pressure to the second spring and the damper, which can further reduce the downward pressure and protect the lower pneumatic rod.

[0018] 2. By providing the support seat body, the rollers fixedly connected to the lower end of the lifting ring on the support seat body can facilitate the movement of the lift chair. In addition, the insertion rods inserted and movably connected to the lifting ring are snap-fitted with the circular holes on the bottom plate, which can fix the position of the lifting ring, facilitating the storage or lowering of the lifting ring. Description of the Drawings

[0019] Figure 1This is a schematic diagram of the overall structure of a base of a lifting chair according to the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the seating main body of a base of a lifting chair according to the present utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the buffer main body of a base of a lifting chair according to the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the support base main body of a base of a lifting chair according to the present utility model.

[0023] In the figure: 1, support base main body; 2, pneumatic rod; 3, seating main body; 4, seat cushion; 5, backrest plate; 31, first circular plate; 32, circular rod; 33, limiting plate; 34, first spring; 35, rectangular groove; 36, first sliding groove; 37, buffer main body; 38, second circular plate; 371, mounting ear; 372, transmission rod; 373, connecting block; 374, rectangular block; 375, damper; 376, second spring; 6, bottom plate; 7, limiting groove; 8, round hole; 9, lifting ring; 10, inserting rod; 11, restricting block; 12, roller. Specific embodiments

[0024] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Please refer to Figures 1-4, the present utility model provides a technical solution:

[0028] A lifting chair base, comprising a support seat main body 1, a pneumatic rod 2 is fixedly connected to the middle of the upper end of the support seat main body 1, a seating main body 3 is fixedly connected to the upper end of the pneumatic rod 2, a seat cushion 4 is fixedly connected to the upper end of the seating main body 3, and a backrest plate 5 is fixedly connected to the rear part of the upper end of the seating main body 3.

[0029] In this embodiment, the seating main body 3 includes a first circular plate 31, three circular rods 32 are inserted and movably clamped in an annular array on the first circular plate 31, limiting plates 33 are fixedly connected to the lower ends of the three circular rods 32, and first springs 34 are fixedly connected between the three limiting plates 33 and the first circular plate 31. Rectangular grooves 35 are opened in the middle of the front inner wall and the rear inner wall of the upper left part and the upper right part of the first circular plate 31. First sliding grooves 36 are opened in the middle of the front inner wall and the rear inner wall of the two rectangular grooves 35. Buffer bodies 37 are movably arranged inside the two rectangular grooves 35. The upper ends of the three circular rods 32 are fixedly connected to a second circular plate 38 together. The buffer body 37 includes upper and lower mounting ears 371. A transmission rod 372 is movably connected between the two mounting ears 371 through a rotating shaft. A connecting block 373 is fixedly connected to the lower end of the lower mounting ear 371. Rectangular blocks 374 are fixedly connected to the middle of the front end and the middle of the rear end of the connecting block 373. A damper 375 is fixedly connected to the left end of the connecting block 373. A second spring 376 is fixedly connected to the left end of the damper 375. The upper mounting ear 371 is fixedly connected to the second circular plate 38. The connecting block 373 and the damper 375 are both located inside the rectangular groove 35. The second spring 376 is fixedly connected to the inner wall of the rectangular groove 35 close to it. The rectangular block 374 is clamped with the first sliding groove 36 close to it. The first circular plate 31 is fixedly connected to the pneumatic rod 2. The second circular plate 38 is fixedly connected to the seat cushion 4 and the backrest plate 5.

[0030] Through the above solution: Between the first circular plate 31 and the second circular plate 38 on the seating main body 3, circular rods 32 and first springs 34 are provided, which can reduce the pressure generated when sitting down. And a buffer body 37 is also provided between the first circular plate 31 and the second circular plate 38. The downward pressure can be transmitted to the damper 375 and the second spring 376 through the transmission rod 372. The second spring 376 is compressed, further reducing the pressure generated when a person sits down and protecting the lower pneumatic rod 2.

[0031] In this embodiment, the support base body 1 includes a bottom plate 6. Limiting grooves 7 are formed at both the front end and the rear end of the bottom plate 6. A set of round holes 8 are formed at both the left end and the right end of the bottom plate 6. A lifting ring 9 is inserted and movably clamped on the outer end of the bottom plate 6. Insertion rods 10 are inserted and movably clamped at both the left end and the right end of the lifting ring 9. Restricting blocks 11 are fixedly connected to both the front part and the rear part of the inner wall of the lifting ring 9. Rollers 12 are fixedly connected to both the left part and the right part of the lower end of the lifting ring 9. The bottom plate 6 is fixedly connected to the lower end of the pneumatic rod 2. The restricting blocks 11 are movably clamped with the adjacent limiting grooves 7. The insertion rods 10 are clamped with the adjacent round holes 8.

[0032] Through the above solution: The rollers 12 are arranged at the lower end of the lifting ring 9 on the bottom plate 6, which can facilitate the movement of the upper structure. In addition, the restricting blocks 11 fixedly connected to the inner wall of the lifting ring 9 are clamped with the limiting grooves 7 on the bottom plate 6, which can prevent the lifting ring 9 from rotating when moving up and down. At the same time, the insertion rods 10 inserted and movably clamped on the lifting ring 9 are clamped with the round holes 8 on the bottom plate 6 to fix the position of the lifting ring 9.

[0033] It should be noted that the present utility model is a base of a lift chair. During the use process, first, the seating main body 3 fixedly connected to the upper end of the pneumatic rod 2. A first spring 34 at the lower part of the round rod 32 arranged between the first round plate 31 and the second round plate 38 on the seating main body 3 can be stretched when receiving the upper pressure, reducing the upper pressure. In addition, a buffer main body 37 is arranged between the first round plate 31 and the second round plate 38. The upper pressure is transferred to the connecting block 373, the damper 375 and the second spring 376 through the transmission rod 372 to reduce the pressure and protect the lower pneumatic rod 2. At the same time, the rectangular block 374 on the connecting block 373 is clamped with the first chute 36, which can prevent the connecting block 373 from slipping out of the rectangular groove 35. At the same time, for the lifting ring 9 inserted and movably clamped on the bottom plate 6 of the support base body 1 at the lower end of the pneumatic rod 2, the rollers 12 at the lower end of the lifting ring 9 can facilitate the movement of the upper structure. In addition, the restricting blocks 11 fixedly connected to the inner wall of the lifting ring 9 are clamped with the limiting grooves 7 on the bottom plate 6, which can prevent the lifting ring 9 from rotating during movement. And the insertion rods 10 inserted and movably clamped on the lifting ring 9 are clamped with the round holes 8 to fix the position of the lifting ring 9, which is convenient for storing or lowering the lifting ring 9.

[0034] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting chair base, comprising a support base body (1), characterized in that: The upper middle part of the support seat main body (1) is fixedly connected with a pneumatic rod (2), the upper end of the pneumatic rod (2) is fixedly connected with a riding main body (3), the upper end of the riding main body (3) is fixedly connected with a cushion (4), and the rear part of the upper end of the riding main body (3) is fixedly connected with a backrest plate (5); The riding main body (3) includes a first circular plate (31), three circular rods (32) are inserted and movably clamped on the first circular plate (31) in an annular array, the lower ends of the three circular rods (32) are fixedly connected with limiting plates (33), and a first spring (34) is fixedly connected between the three limiting plates (33) and the first circular plate (31). Rectangular grooves (35) are formed in the left and right parts of the upper end of the first circular plate (31), first sliding grooves (36) are formed in the middle of the front inner wall and the rear inner wall of the two rectangular grooves (35), a buffer main body (37) is movably arranged inside the two rectangular grooves (35), and the upper ends of the three circular rods (32) are fixedly connected with a second circular plate (38) together; The buffer main body (37) includes upper and lower mounting ears (371), a transmission rod (372) is movably connected between the two mounting ears (371) through a rotating shaft, a connecting block (373) is fixedly connected to the lower end of the lower mounting ear (371), rectangular blocks (374) are fixedly connected to the middle of the front end and the middle of the rear end of the connecting block (373), a damper (375) is fixedly connected to the left end of the connecting block (373), and a second spring (376) is fixedly connected to the left end of the damper (375).

2. The base of a lift chair according to claim 1, characterized in that: The upper mounting ear (371) is fixedly connected with the second circular plate (38), the connecting block (373) and the damper (375) are both located inside the rectangular groove (35), the second spring (376) is fixedly connected with the inner wall of the adjacent rectangular groove (35), the rectangular block (374) is clamped with the adjacent first sliding groove (36), the first circular plate (31) is fixedly connected with the pneumatic rod (2), and the second circular plate (38) is fixedly connected with the cushion (4) and the backrest plate (5).

3. The lift chair base according to claim 1, characterized in that: The support seat main body (1) includes a bottom plate (6), limiting grooves (7) are formed in the front and rear ends of the bottom plate (6), a group of circular holes (8) are formed in the left and right ends of the bottom plate (6), a lifting ring (9) is inserted and movably clamped on the outer end of the bottom plate (6), inserting rods (10) are inserted and movably clamped on the left and right ends of the lifting ring (9), limiting blocks (11) are fixedly connected to the front and rear inner walls of the lifting ring (9), and rollers (12) are fixedly connected to the left and right parts of the lower end of the lifting ring (9).

4. The base of a lift chair according to claim 3, characterized in that: The bottom plate (6) is fixedly connected with the lower end of the pneumatic rod (2), the limiting block (11) is movably clamped with the adjacent limiting groove (7), and the inserting rod (10) is clamped with the adjacent circular hole (8).

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