Protective ergonomic chair with adjustable backrest

Abstract

The utility model discloses a kind of protective type ergonomic chair with adjustable backrest, including body mechanism and the support protection mechanism of being set to the one side of body mechanism, the body mechanism includes symmetrically arranged side arm, the support protection mechanism includes locking screw in screw connection in one side of side arm, the locking screw outside is movably connected with rotary plate by arc slot, the rotary plate inboard is fixedly connected with rotating shaft, the outer wall of hand wheel is rotated and is inserted into screw in main shaft, drives and inserts into screw and moves to the buffer pad extension to the rotating platform of required support position of support block, finally, the process of user using body mechanism, support block and buffer pad are adjusted in advance according to the actual needs of user itself, thus the body shape, sitting posture habit or waist of different users can be targeted support protection, to realize personalized protection support for different users, ensure the comfort of user after long sitting.

Description

Technical Field

[0001] This utility model belongs to the field of ergonomic chair technology, specifically relating to a protective ergonomic chair with an adjustable backrest. Background Technology

[0002] Ergonomic chairs are designed based on ergonomic principles to provide optimal support and comfort, reduce physical fatigue and health risks caused by prolonged sitting, and reduce pressure on the spine, lumbar spine, cervical spine, and other parts of the body. Ergonomic chairs have become an essential health equipment in modern office, home, and gaming scenarios.

[0003] In some existing ergonomic chairs, the support points are mostly concentrated in the shoulder and neck area, while the lumbar support usually uses relatively fixed flexible support blocks. This design makes it difficult to adjust to different users' body types, sitting habits, or actual lumbar needs, resulting in a mismatch between the lumbar support strength and the user's actual needs. This makes it difficult to provide effective personalized protection and a comfortable experience, which is quite inconvenient. Utility Model Content

[0004] The technical problem this invention aims to solve is to overcome existing defects and provide a protective ergonomic chair with an adjustable backrest. This addresses the issue mentioned in the background section where existing ergonomic chairs concentrate their support points in the shoulder and neck area, while lumbar support typically uses relatively fixed flexible support blocks. This design makes it difficult to adjust to different users' body types, sitting habits, or actual lumbar needs, resulting in a mismatch between lumbar support strength and the user's actual requirements. This makes it difficult to provide effective personalized protection and a comfortable experience, leading to considerable inconvenience.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective ergonomic chair with an adjustable backrest, comprising a main body mechanism and a support and protection mechanism disposed on one side of the main body mechanism. The main body mechanism includes symmetrically arranged side arms. The support and protection mechanism includes a locking screw threaded to one side of the side arm. A rotating plate is movably connected to the outer side of the locking screw via an arc groove. A rotating shaft is fixedly connected to the inner side of the rotating plate. A side arm is rotatably connected to the outer side of the rotating shaft. A main shaft is fixedly connected to one side of the rotating shaft. An abutting screw is threadedly connected to the inner side of the main shaft. A base is rotatably connected to the outer side of one end of the abutting screw. A support block is fixedly connected to one side of the base. A buffer pad is fixedly connected to one side of the support block.

[0006] Preferably, the main body mechanism includes a base plate, a seat cushion is fixedly connected to the top of the base plate, a column is fixedly connected to the bottom of the base plate, a leg is fixedly connected to the outer side of the bottom end of the column, several legs are symmetrically arranged, casters are fixedly connected to the bottom of the legs, a side arm is fixedly connected to one side of the base plate, a back panel is clamped and connected to one side of the side arm, a back cushion is fixedly connected to one side of the back panel, and a headrest is fixedly connected to one side of the back cushion.

[0007] Preferably, the buffer pad is made of a flexible material, and a support block is fixedly connected to one side of the buffer pad. Both the support block and the buffer pad are arc-shaped structures.

[0008] Preferably, a reinforcing rib is fixedly connected to the other side of the support block, and several reinforcing ribs are symmetrically arranged.

[0009] Preferably, a sliding rod is fixedly connected to the other side of the support block, and two sliding rods are symmetrically arranged, with a main shaft slidably connected to the outer side of the sliding rod.

[0010] Preferably, a support frame is fixedly connected to one side of the main shaft, and an abutting screw and a sliding rod are movably connected to the inner side of the support frame.

[0011] Preferably, a handwheel is fixedly connected to the other end of the advancing screw, and a main shaft is threadedly connected to the outer side of the advancing screw.

[0012] Preferably, a washer is movably connected to the outer side of one end of the locking screw, and the washer is located on one side of the rotating plate.

[0013] Compared with the prior art, this utility model provides a protective ergonomic chair with an adjustable backrest, which has the following advantages: 1. This utility model uses a retaining screw to position the main body mechanism at the required point. Users can rotate the screw counterclockwise to loosen the locking screw, releasing the restriction on the position of the rotating plate, and rotate the rotating plate with the arc groove until the retaining screw inside the main shaft is at the required angle. Then, rotating the locking screw clockwise fixes the angle of the rotating plate. After holding the outer wall of the handwheel, the retaining screw is rotated inside the main shaft, moving it to the side of the support block where the buffer pad extends to the turntable at the required support position. Finally, during use, the support block and buffer pad are pre-adjusted according to the user's needs, providing targeted support and protection for different user body types, sitting habits, or actual lumbar needs. This achieves personalized protection and support for different users, ensuring comfort after prolonged sitting. 2. This utility model, by setting a handwheel, can effectively and conveniently allow personnel to directly hold and rotate it; 3. By setting a sliding rod, this utility model can effectively ensure the stability of the support block's position during movement and under stress.

[0014] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is an isometric structural diagram of a protective ergonomic chair with an adjustable backrest proposed in this utility model. Figure 2 This is an exploded structural diagram of a protective ergonomic chair with an adjustable backrest proposed in this utility model. Figure 3 A schematic diagram of the isometric structure of the support and protection mechanism of a protective ergonomic chair with an adjustable backrest proposed in this utility model. Figure 4 An exploded view of the bearing protection mechanism of a protective ergonomic chair with an adjustable backrest proposed in this utility model. In the diagram: Main body mechanism 1, base plate 101, seat cushion 102, column 103, leg frame 104, caster wheel 105, side arm 106, back plate 107, backrest cushion 108, headrest 109, support and protection mechanism 2, locking screw 201, arc groove 202, rotating plate 203, rotating shaft 204, main shaft 205, abutting screw 206, base 207, support block 208, buffer pad 209, reinforcing rib 3, sliding rod 4, support frame 5, handwheel 6, shim 7. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4This utility model provides a technical solution: a protective ergonomic chair with an adjustable backrest, including a main body mechanism 1 and a support and protection mechanism 2 disposed on one side of the main body mechanism 1. The main body mechanism 1 includes symmetrically arranged side arms 106. The support and protection mechanism 2 includes a locking screw 201 threadedly connected to one side of the side arm 106. A rotating plate 203 is movably connected to the outer side of the locking screw 201 through an arc groove 202. A rotating shaft 204 is fixedly connected to the inner side of the rotating plate 203. The side arm 106 is rotatably connected to the outer side of the rotating shaft 204. A main shaft 205 is fixedly connected to one side of the rotating shaft 204. An abutting screw 206 is threadedly connected to the inner side of the main shaft 205. A base 207 is rotatably connected to the outer side of one end of the abutting screw 206. A support block 208 is fixedly connected to one side of the base 207. A buffer pad 209 is fixedly connected to one side of the support block 208. The main body mechanism 1 is set up at the required position, and... According to the user's specific needs for lumbar support and protection, the user can rotate counterclockwise to loosen the locking screw 201, thereby releasing the restriction on the position of the rotating plate 203. With the help of the arc groove 202, the rotating plate 203 is rotated until the abutting screw 206 inside the main shaft 205 is at the required angle. The locking screw 201 is then rotated clockwise to fix the angle of the rotating plate 203. After holding the outer wall of the handwheel 6, the abutting screw 206 is rotated inside the main shaft 205, causing the abutting screw 206 to move to the turntable where the buffer pad 209 on one side of the support block 208 extends to the required support position. Finally, during the user's use of the main body mechanism 1, the support block 208 and the buffer pad 209 are pre-adjusted according to the user's own needs, thus providing targeted support and protection for different users' body types, sitting habits, or actual lumbar needs. This achieves personalized protection and support for different users, ensuring the user's comfort after sitting for a long time.

[0018] In this utility model, preferably, the main body mechanism 1 includes a base plate 101, a cushion 102 fixedly connected to the top of the base plate 101, a column 103 fixedly connected to the bottom of the base plate 101, a footrest 104 fixedly connected to the outer side of the bottom end of the column 103, several footrests 104 are symmetrically arranged, a caster wheel 105 is fixedly connected to the bottom of the footrest 104, a side arm 106 is fixedly connected to one side of the base plate 101, a back panel 107 is snapped and connected to one side of the side arm 106, a backrest 108 is fixedly connected to one side of the back panel 107, and a headrest 109 is fixedly connected to one side of the backrest 108. The main body mechanism 1 is moved to the desired position with the caster wheel 105 at the bottom of the footrest 104, the back panel 107 is adjusted to the desired height on one side of the side arm 106 and then snapped and fixed to the side arm 106, and finally used by the user.

[0019] In this utility model, preferably, the cushioning pad 209 is made of flexible material, and a support block 208 is fixedly connected to one side of the cushioning pad 209. Both the support block 208 and the cushioning pad 209 are arc-shaped structures, which can improve the comfort after contact while conforming more closely to the user's waist curve.

[0020] In this utility model, preferably, a reinforcing rib 3 is fixedly connected to the other side of the support block 208, and several reinforcing ribs 3 are symmetrically arranged, which can effectively ensure the stability of the arc-shaped structure of the support block 208.

[0021] In this utility model, preferably, a sliding rod 4 is fixedly connected to the other side of the support block 208. Two sliding rods 4 are symmetrically arranged, and a main shaft 205 is slidably connected to the outer side of the sliding rod 4, which can effectively ensure the stability of the position of the support block 208 during movement and under force.

[0022] In this utility model, preferably, a support frame 5 is fixedly connected to one side of the main shaft 205, and an inserting screw 206 and a sliding rod 4 are movably connected to the inner side of the support frame 5, which can effectively increase the support area of ​​the inserting screw 206 and ensure the stability of the position of the inserting screw 206.

[0023] In this utility model, preferably, a handwheel 6 is fixedly connected to the other end of the push screw 206, and a main shaft 205 is threadedly connected to the outside of the push screw 206, which can effectively and conveniently allow personnel to hold and rotate it directly.

[0024] In this utility model, preferably, a washer 7 is movably connected to the outer side of one end of the locking screw 201. The washer 7 is located on one side of the rotating plate 203, which can effectively reduce the loosening range of the locking screw 201 during long-term use.

[0025] The working principle and usage process of this utility model are as follows: When in use, the main body mechanism 1 is set up at the required position. The user, according to their specific needs for lumbar support and protection, rotates counterclockwise and loosens the locking screw 201 to release the restriction on the position of the rotating plate 203. With the help of the arc groove 202, the rotating plate 203 is rotated until the abutting screw 206 inside the main shaft 205 is at the required angle. The locking screw 201 is rotated clockwise to fix the angle of the rotating plate 203. After holding the outer wall of the handwheel 6, the abutting screw 206 is rotated inside the main shaft 205, which drives the abutting screw 206 to move to the turntable where the buffer pad 209 on the side of the support block 208 extends to the required support position. Finally, during the user's use of the main body mechanism 1, the support block 208 and the buffer pad 209 are pre-adjusted according to the user's own needs, so they can provide targeted support and protection for different users' body types, sitting habits, or actual lumbar needs, thereby achieving personalized protection and support for different users and ensuring the user's comfort after sitting for a long time.

[0026] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective ergonomic chair with an adjustable backrest, characterized in that: The system includes a main body mechanism (1) and a support and protection mechanism (2) disposed on one side of the main body mechanism (1). The main body mechanism (1) includes symmetrically arranged side arms (106). The support and protection mechanism (2) includes a locking screw (201) threadedly connected to one side of the side arm (106). A rotating plate (203) is movably connected to the outer side of the locking screw (201) through an arc groove (202). A rotating shaft (204) is fixedly connected to the inner side of the rotating plate (203). The side arm (106) is rotatably connected to the outer side of the rotating shaft (204). A main shaft (205) is fixedly connected to one side of the rotating shaft (204). An abutting screw (206) is threadedly connected to the inner side of the main shaft (205). A base (207) is rotatably connected to the outer side of one end of the abutting screw (206). A support block (208) is fixedly connected to one side of the base (207). A buffer pad (209) is fixedly connected to one side of the support block (208).

2. A protective ergonomic chair with an adjustable backrest according to claim 1, characterized in that: The main body mechanism (1) includes a base plate (101), a seat cushion (102) is fixedly connected to the top of the base plate (101), a column (103) is fixedly connected to the bottom of the base plate (101), a leg (104) is fixedly connected to the outer side of the bottom end of the column (103), several legs (104) are symmetrically arranged, a caster wheel (105) is fixedly connected to the bottom of the leg (104), a side arm (106) is fixedly connected to one side of the base plate (101), a back plate (107) is snapped and connected to one side of the side arm (106), a back cushion (108) is fixedly connected to one side of the back plate (107), and a headrest (109) is fixedly connected to one side of the back cushion (108).

3. A protective ergonomic chair with an adjustable backrest according to claim 1, characterized in that: The buffer pad (209) is made of flexible material, and a support block (208) is fixedly connected to one side of the buffer pad (209). Both the support block (208) and the buffer pad (209) are arc-shaped structures.

4. A protective ergonomic chair with an adjustable backrest according to claim 1, characterized in that: The other side of the support block (208) is fixedly connected with a reinforcing rib (3), and several reinforcing ribs (3) are symmetrically arranged.

5. A protective ergonomic chair with an adjustable backrest according to claim 1, characterized in that: The other side of the support block (208) is fixedly connected to a slide rod (4), and two slide rods (4) are symmetrically arranged. A main shaft (205) is slidably connected to the outside of the slide rod (4).

6. A protective ergonomic chair with an adjustable backrest according to claim 5, characterized in that: A support frame (5) is fixedly connected to one side of the main shaft (205), and an abutting screw (206) and a slide rod (4) are movably connected to the inside of the support frame (5).

7. A protective ergonomic chair with an adjustable backrest according to claim 1, characterized in that: A handwheel (6) is fixedly connected to the other end of the push screw (206), and a main shaft (205) is threadedly connected to the outside of the push screw (206).

8. A protective ergonomic chair with an adjustable backrest according to claim 1, characterized in that: A washer (7) is movably connected to the outer side of one end of the locking screw (201), and the washer (7) is located on one side of the rotating plate (203).

Images