Office chair with pneumatically adjusted back

Abstract

The utility model provides an office chair with a pneumatically adjusted back, and relates to the field of office chairs. The office chair comprises a cushion, supporting legs are fixedly connected to the lower surface of the cushion, a transfer bin is fixedly connected to the left end of the cushion, a backrest shell is fixedly connected to the upper end of the transfer bin, and a rotary pressure motor is fixedly connected to the inner side of the transfer bin. According to the office chair capable of pneumatically adjusting the back, a reset spring is extruded through an adjusting rod, so that a rack plate transversely moves to push a sealing plate to rotate, an air inlet shell communicates with an air supply pipeline, an air pump is started to generate air flow, the air supply pipeline provides air flow for the air inlet shell, and the air flow enters an air cushion bin through a communicating pipe; the air cushion bin at the specific position is inflated and swelled to change the position, and different air cushion bins are inflated by pressing different adjusting rods, so that the effect of adjusting the shape of the backrest is achieved, and the problem that the shape of the backrest of the office chair is fixed and the fatigue of the waist cannot be relieved as required is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to an office chair with a pneumatic back adjustment. Background Art

[0002] Office chairs refer to various chairs used for convenience in daily work and social activities. They can be categorized into narrow and broad definitions. In the narrow sense, office chairs refer to chairs with backrests used when a person is seated while performing desk work. In the broad sense, office chairs encompass all chairs used in offices, including executive chairs, mid-shift chairs, meeting chairs, staff chairs, conference chairs, visitor chairs, and training chairs.

[0003] After sitting in an office chair for a long time, the waist and back will ache and the user needs to lean on the backrest to rest. However, the fixed shape of the backrest of the traditional office chair cannot relieve the waist and back pain, and the backrest cannot be quickly converted between lying and sitting positions according to needs. Therefore, an office chair with an adjustable backrest to relieve waist and back pressure is proposed. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides an office chair with pneumatic back adjustment, which solves the problems raised in the background art.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pneumatically adjustable back office chair, comprising a seat cushion, the lower surface of the seat cushion is fixedly connected to a support leg, the left end of the seat cushion is fixedly connected to a transfer bin, the upper end of the transfer bin is fixedly connected to a backrest shell, the inner side of the transfer bin is fixedly connected to a rotary pressure motor, the output end of the rotary pressure motor is fixedly connected to a rotary pressure wheel, the outer circumference of the rotary pressure wheel is sleeved with a linkage belt, the upper end surface of the rotary pressure wheel is fixedly connected to a rotary pressure rod, the inner side of the backrest shell is fixedly connected to an air cushion bin, the rotary pressure rod is in contact with the air cushion bin, and the backrest The inner side of the shell is fixedly connected with a limiting frame, the inner side of the limiting frame is slidably connected with an adjusting rod, the outer surface of the adjusting rod is sleeved with a return spring, the return spring is on the inner side of the limiting frame, the end face of the adjusting rod is fixedly connected with a rack plate, the inner side of the backrest shell is fixedly connected with an air pump, the output end of the air pump is fixedly connected with and passes through an air supply pipe, the surface of the air cushion bin is fixedly connected with and passes through a connecting pipe, the end of the connecting pipe away from the air cushion bin is fixedly connected with and passes through an air intake shell, the air intake shell is connected and passed through the air supply pipe, the inner side of the intake shell is rotatably connected with a closing plate, and the closing plate is meshed with the rack plate.

[0008] Preferably, the turning and pressure rods are in the shape of curved round rods, and the curved positions of the turning and pressure rods are in contact with different air cushion chambers. There are two groups of turning and pressure rods.

[0009] Preferably, the air cushion warehouse is composed of air cushion blocks and connecting belts. There are three groups of air cushion blocks. The air cushion blocks can be inflated, and the air cushion blocks are fixedly connected with connecting belts.

[0010] Preferably, the adjusting rod is in the shape of a round rod, and there are three groups of adjusting rods, all of which are on the side of the backrest shell. A circular ring is fixedly connected to the surface of the adjusting rod, and the circular ring on the surface of the adjusting rod contacts the end face of the reset spring.

[0011] Preferably, the air intake shell is a disc-shaped empty shell, and the side surface of the air intake shell is connected to and passes through the air supply pipe. There are three groups of air intake shells.

[0012] Preferably, the closing plate is composed of a pushing tooth and a sealing plate. The sealing plate is arc-shaped and rotatably connected to the inner surface of the air intake shell. The end surface of the sealing plate is fixedly connected with a pushing tooth, which is engaged with the rack plate.

[0013] (3) Beneficial effects

[0014] The utility model provides an office chair with pneumatic back adjustment, which has the following beneficial effects:

[0015] 1. The back of the pneumatically adjustable office chair is configured such that the adjustment rod squeezes the return spring to cause the rack plate to move laterally and push the closing plate to rotate, thereby connecting the air intake shell with the air supply pipe. The air flow is generated by starting the air pump, and the air supply pipe provides air flow to the air intake shell, which enters the air cushion chamber from the connecting pipe, so that the air cushion chamber at a specific position is inflated and changes its position. By pressing different adjustment rods, different air cushion chambers are inflated, thereby achieving the effect of adjusting the shape of the backrest, solving the problem that the office chair backrest is fixed in shape and cannot relieve waist fatigue as needed.

[0016] 2. The pneumatically adjustable back office chair starts the rotary pressure motor to drive the rotary pressure wheel to rotate, so that the rotary pressure rod rotates and squeezes the air cushion chamber, so that the air cushion chamber quickly changes its position to adjust the sitting posture. By pushing out different air cushion chambers, the back can be more comfortably pressed against the backrest surface, achieving the effect of quickly switching the office chair posture adjustment, and solving the problem that the backrest cannot be quickly converted between lying and sitting positions according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the inner structure of the backrest shell of the utility model;

[0019] Figure 3 This is a schematic diagram of the closed plate structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the air cushion warehouse of the utility model.

[0021] Among them, there are seat cushion-1, support leg-2, transfer chamber-3, backrest shell-4, transfer motor-5, transfer wheel-6, linkage belt-7, transfer rod-8, air cushion chamber-9, air cushion block-901, connecting belt-902, limiting frame-10, adjusting rod-11, return spring-12, rack plate-13, air pump-14, air supply pipe-15, connecting pipe-16, air intake shell-17, closing plate-18, pushing tooth-181, sealing plate-182. DETAILED DESCRIPTION

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

[0023] The present invention provides an office chair with pneumatic back adjustment. Figure 1-4 As shown, it includes a seat cushion 1, the lower surface of the seat cushion 1 is fixedly connected to a support leg 2, the left end of the seat cushion 1 is fixedly connected to a transfer bin 3, the upper end of the transfer bin 3 is fixedly connected to a backrest shell 4, the inner side of the transfer bin 3 is fixedly connected to a rotating and pressing motor 5, the output end of the rotating and pressing motor 5 is fixedly connected to a rotating and pressing wheel 6, the outer circumference of the rotating and pressing wheel 6 is sleeved with a linkage belt 7, the upper end surface of the rotating and pressing wheel 6 is fixedly connected to a rotating and pressing rod 8, the inner side of the backrest shell 4 is fixedly connected to an air cushion bin 9, the rotating and pressing rod 8 is in contact with the air cushion bin 9, and the rotating and pressing rod 8 is a bent round rod. The bent positions of the rotating and pressing rod 8 are in contact with different air cushion bins 9. There are two groups of rotating and pressing rods 8, and the rotating and pressing rods 8 can rotate to push and squeeze the position of the air cushion bin 9, thereby quickly changing the shape of the backrest.

[0024] A limiting frame 10 is fixedly connected to the inner side of the backrest shell 4, and the air cushion chamber 9 is composed of air cushion blocks 901 and connecting belts 902. There are three groups of air cushion blocks 901, and the air cushion blocks 901 can be inflated. Connecting belts 902 are fixedly connected between the air cushion blocks 901. The air cushion chamber 9 can be inflated to make the backrest fit the back better, thereby relieving back fatigue and alleviating back soreness.

[0025] An adjusting rod 11 is slidably connected to the inner side of the limiting frame 10, and a return spring 12 is sleeved on the outer surface of the adjusting rod 11. The return spring 12 is on the inner side of the limiting frame 10. The adjusting rod 11 is a round rod in shape. There are three groups of adjusting rods 11, all of which are on the side of the backrest shell 4. A ring is fixedly connected to the surface of the adjusting rod 11. The ring on the surface of the adjusting rod 11 is in contact with the end face of the return spring 12. The adjusting rod 11 can be pressed and pushed to connect and inflate the air cushion chamber 9 at different positions.

[0026] The end face of the adjusting rod 11 is fixedly connected to the rack plate 13, the inner side of the backrest shell 4 is fixedly connected to the air pump 14, the output end of the air pump 14 is fixedly connected and penetrated by the air supply pipe 15, the surface of the air cushion chamber 9 is fixedly connected and penetrated by the connecting pipe 16, the end of the connecting pipe 16 away from the air cushion chamber 9 is fixedly connected and penetrated by the air intake shell 17, the air intake shell 17 is connected to and penetrated by the air supply pipe 15, the outer shape of the air intake shell 17 is a disc-shaped empty shell, the side of the air intake shell 17 is connected to and penetrated by the air supply pipe 15, there are three groups of air intake shells 17, and the air intake shell 17 can cooperate with the inner mechanism to complete the connection and sealing of the air cushion chamber 9.

[0027] A closing plate 18 is rotatably connected to the inner side of the air intake shell 17, and the closing plate 18 is engaged with the rack plate 13. The closing plate 18 consists of a pushing tooth 181 and a sealing plate 182. The sealing plate 182 is arc-shaped and rotatably connected to the inner surface of the air intake shell 17. The end face of the sealing plate 182 is fixedly connected with a pushing tooth 181, and the pushing tooth 181 is engaged with the rack plate 13. The closing plate 18 can timely block and penetrate the air intake shell 17, so that the inflation position of the air cushion chamber 9 can be controlled.

[0028] Working principle: When in use, press the adjusting rod 11 at a specific position as needed, and squeeze the return spring 12 through the adjusting rod 11, so that the rack plate 13 moves horizontally and pushes the closing plate 18 to rotate, so that the air inlet shell 17 is connected to the air supply pipe 15, and air flow is generated by starting the air pump 14, so that the air supply pipe 15 provides air flow to the air inlet shell 17, so that the connecting pipe 16 enters the air cushion chamber 9, so that the air cushion chamber at a specific position is inflated and changes its position, and different adjusting rods 11 are pressed to inflate different air cushion chambers 9. After the pressure on the adjusting rod 11 is released, the return spring 12 pushes the adjusting rod 11 to reset, so that the sealing plate 182 blocks the closed air inlet shell 17, and the pressure motor 5 is started to drive the pressure wheel 6 to rotate, so that the pressure rod 8 rotates and squeezes the air cushion chamber 9, so that the air cushion chamber 9 quickly changes its position to adjust the sitting posture.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An office chair with pneumatic back adjustment, comprising a seat cushion (1), characterized in that: The lower surface of the seat cushion (1) is fixedly connected to a support leg (2); the left end of the seat cushion (1) is fixedly connected to a transfer bin (3); the upper end of the transfer bin (3) is fixedly connected to a backrest shell (4); the inner side of the transfer bin (3) is fixedly connected to a transfer motor (5); the output end of the transfer motor (5) is fixedly connected to a transfer wheel (6); the outer peripheral surface of the transfer wheel (6) is sleeved with a linkage belt (7); the upper end surface of the transfer wheel (6) is fixedly connected to a transfer rod (8); the inner side of the backrest shell (4) is fixedly connected to an air cushion bin (9); the transfer rod (8) contacts the air cushion bin (9); the inner side of the backrest shell (4) is fixedly connected to a limiting frame (10); the inner side of the limiting frame (10) is slidably connected to an adjustment rod (11); the adjustment rod (11) is slidably connected to the inner side of the adjustment frame (10 ... A return spring (12) is sleeved on the outer surface of the rod (11), and the return spring (12) is inside the limiting frame (10). The end surface of the adjusting rod (11) is fixedly connected to a rack plate (13). An air pump (14) is fixedly connected to the inside of the backrest shell (4). An output end of the air pump (14) is fixedly connected to and penetrates an air supply pipeline (15). A connecting pipe (16) is fixedly connected to and penetrates the surface of the air cushion chamber (9). An end of the connecting pipe (16) away from the air cushion chamber (9) is fixedly connected to and penetrates an air intake shell (17). The air intake shell (17) is connected to and penetrates the air supply pipeline (15). A closing plate (18) is rotatably connected to the inside of the air intake shell (17), and the closing plate (18) is meshed with the rack plate (13).

2. The pneumatically adjustable back office chair according to claim 1, characterized in that: The transfer rod (8) has a curved round rod shape, and the curved positions of the transfer rod (8) are in contact with different air cushion chambers (9). There are two groups of transfer rods (8) in total.

3. The pneumatically adjustable back office chair according to claim 1, characterized in that: The air cushion chamber (9) is composed of air cushion blocks (901) and connecting belts (902). There are three groups of air cushion blocks (901). The air cushion blocks (901) are inflatable, and the connecting belts (902) are fixedly connected between the air cushion blocks (901).

4. The pneumatically adjustable back office chair according to claim 1, characterized in that: The adjusting rod (11) is in the shape of a round rod. There are three groups of adjusting rods (11) all on the side of the backrest shell (4). A circular ring is fixedly connected to the surface of the adjusting rod (11). The circular ring on the surface of the adjusting rod (11) contacts the end surface of the return spring (12).

5. The pneumatically adjustable back office chair according to claim 1, characterized in that: The air intake shell (17) is in the shape of a disk-shaped hollow shell. The side surface of the air intake shell (17) is connected to and communicates with the air supply pipeline (15). There are three groups of air intake shells (17) in total.

6. The pneumatically adjustable back office chair according to claim 1, characterized in that: The closing plate (18) is composed of a pushing tooth (181) and a sealing plate (182); the sealing plate (182) is arc-shaped and rotatably connected to the inner surface of the air intake shell (17); the end surface of the sealing plate (182) is fixedly connected to the pushing tooth (181); the pushing tooth (181) is meshed with the rack plate (13).

Images