CN219895152U - Office chair back rest structure - Google Patents

Abstract

The utility model discloses an office chair back rest structure, which belongs to the technical field of office chairs and comprises office chairs, fixing frames, supporting frames, sliding grooves A, backrests and polyester mesh fabrics. After the damping telescopic rod B and the outer springs are driven to shrink, the backrest is pushed to slide upwards or downwards to a proper backrest height through the sliding blocks on the inner side of the sliding groove A, and the four limiting frames are loosened, so that the damping telescopic rod B and the outer springs pop up the limiting frames to slide into the inner sides of the opposite limiting grooves B, the height adjustment treatment of the backrest is completed, the backrest can be conveniently and freely adjusted to a proper height by workers of different ages, and the workers are more comfortable when leaning against the surface of the side dacron mesh cloth of the backrest.

Description

Office chair back rest structure

Technical Field

The utility model belongs to the technical field of office chairs, and particularly relates to an office chair backrest structure.

Background

An office chair is an office chair which is provided with a plurality of hand brackets, waist supports, headrest and the like, and enables a human body to work on the chair with increased comfort, and therefore, an office chair back rest structure is required.

According to the search, the application number is CN202220389045.2, the safe and comfortable office chair is provided with the rotating rod which rotates in a following way, so that the first nut sleeve and the second nut sleeve move in opposite directions to be close to each other, the inclination angle of the first connecting rod and the second connecting rod is reduced, the telescopic rod is pushed outwards by the sleeve, the telescopic rod moves downwards with the convex particles, the distance between the telescopic rod and the supporting underframe is shortened, the downward bending distance of the cushion frame is limited, the cushion frame is effectively prevented from being excessively pressed downwards to deform the whole arched chair, and the safe and comfortable office chair can be more suitable for user experience; the disadvantages are as follows:

when the staff uses this kind of safe comfortable office chair, through rotatory knob, the threaded rod rotates in situ in the protective housing under the effect of swivel boot, and the regulation pole just takes the headrest to promote or descend, has the required headrest height of adaptation adjustment user, and when the staff adjusts the headrest height, because the fixed can not freely adjust of angle of cushion, can make fixed cushion angle, leads to different age bracket users to produce uncomfortable easily when leaning on the cushion, and this kind of safe comfortable office chair is less to user application scope.

Disclosure of Invention

The utility model aims at: in order to solve the problem that the cushion which is fixed and can not be freely adjusted for the safe and comfortable office chair is uncomfortable to use, the office chair back rest structure is provided.

The technical scheme adopted by the utility model is as follows: the utility model provides an office chair back rest structure, includes office chair, mount, support frame, spout A, back and dacron screen cloth, relative fixed mounting has the mount around the office chair top, the mount opposite face all rotates through the bearing and is provided with the support frame, support frame opposite face embedding is provided with spout A, be provided with the back through the slider slip between the spout A inboard, back side fixed mounting has dacron screen cloth, and dacron screen cloth is the arcuation setting, the back outside is provided with the high position adjustment mechanism who facilitates the user to adjust suitable self height, the support frame outside is provided with the rotation angle adjustment mechanism who facilitates the user to adjust back angle, the inside massage mechanism that can self-adaptation user back dynamics carries out micro-massage treatment that is provided with of back.

The height position adjusting mechanism is composed of a limiting groove B, a sliding groove B, a limiting frame and a damping telescopic rod B, wherein the limiting groove B is embedded in the front of the supporting frame and is arranged close to the front of the limiting groove B, the limiting grooves B are formed in a plurality of mode and are arranged in parallel at equal intervals, the sliding groove B is arranged in the back in a vertically opposite mode, the inner side of the sliding groove B is slidably provided with the limiting frame, the limiting frame is matched with the inner side of the limiting groove B in a sliding mode, the damping telescopic rod B is fixedly installed between the rear side of the limiting frame and the rear side of the inner wall of the sliding groove B, and springs are arranged on the outer side of the damping telescopic rod B in a matched mode.

The adjusting mechanism comprises an adjusting frame, a damping telescopic rod A, a limiting block, a limiting groove A, a guide frame, a limiting groove C, a sliding groove C, a limiting groove D and a bolt, wherein the adjusting frame is arranged in front of the supporting frame in a sliding mode and is close to the front of a fixing frame, the damping telescopic rod A is fixedly installed between the rear of the adjusting frame and the front of the inner wall of the supporting frame, a spring is arranged outside the damping telescopic rod A in a matched mode, the limiting blocks are fixedly installed on the periphery of the rear of the adjusting frame, the limiting groove A is embedded in the front of the fixing frame and is arranged in a plurality of positions, the limiting groove A is arranged in an equidistant surrounding mode, the limiting block is arranged in the inner side of the limiting groove A in a sliding mode, the guide frame is arranged in an arc-shaped mode, the guide frame is arranged in front of the office chair in a position close to the guide frame in a sliding mode, the limiting groove D is arranged in a position close to the upper portion of the guide frame in a sliding mode, the limiting groove C is arranged in a plurality of positions, and the limiting groove C is arranged in an equidistant mode, and the limiting groove D is arranged in a position between the position of the limiting groove A and the inner side of the limiting groove is arranged in a sliding mode.

The massage mechanism comprises a damping telescopic rod C, a massage plate and massage blocks A, wherein the damping telescopic rod C is fixedly arranged on the side of the inner wall of the backrest, a spring is arranged on the outer side of the damping telescopic rod C in a matched mode, the massage plates are fixedly arranged on the side of the end part of the damping telescopic rod C, the massage blocks A are fixedly arranged on the side of the massage plates, the massage blocks A are in a plurality of shapes and are arranged in parallel at equal intervals in an arc shape, and the massage blocks A and the massage plates are made of natural rubber.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. this kind of office chair back structure is through being provided with high position adjustment mechanism, can make the staff pass through between spacing groove B, spout B, spacing and the damping telescopic link B cooperation, promotes behind the spacing roll-off spacing groove B, and the user can promote the back to slide suitable back height through the slider upwards or downwards in spout A inboard, makes things convenient for different ages staff freely to adjust the back to suitable height, makes the staff more comfortable when leaning on back side dacron screen cloth surface.

2. This kind of office chair back structure is through being provided with rotation angle adjustment mechanism, can make the staff pass through the alignment jig, damping telescopic link A, the stopper, spacing groove A, the leading truck, spacing groove C, spout C, cooperation between spacing groove D and the bolt, promote the alignment jig and drive stopper roll-off spacing groove A, after the pulling bolt roll-off spacing groove C and spacing groove D are inboard again, the staff rotates the alignment jig and drives the back and freely carries out angle modulation, make things convenient for different age staff freely to adjust the back to comfortable leaning angle, make the staff lean on more comfortablely when back side dacron screen cloth surface.

Drawings

Fig. 1 is a schematic diagram of an office chair of the present utility model in front perspective;

FIG. 2 is a schematic diagram of a front cross-sectional structure of an office chair according to the present utility model;

FIG. 3 is a schematic diagram of a front cross-sectional structure of a backrest in accordance with the present utility model;

FIG. 4 is a schematic diagram of a cross-sectional side view of an office chair according to the present utility model;

FIG. 5 is a schematic diagram of the enlarged construction of FIG. 2 at A in accordance with the present utility model;

FIG. 6 is a schematic diagram of the enlarged construction of FIG. 4 at B in accordance with the present utility model;

FIG. 7 is a schematic diagram of the enlarged construction of FIG. 4 at C in accordance with the present utility model;

fig. 8 is a schematic diagram of a second enlarged construction of the embodiment of fig. 3D according to the present utility model.

The marks in the figure: 1. office chairs; 101. a fixing frame; 102. a support frame; 103. an adjusting frame; 104. damping telescopic rod A; 105. a limiting block; 106. a limit groove A; 107. a chute A; 108. a limit groove B; 2. a backrest; 201. polyester mesh cloth; 202. a chute B; 203. a limiting frame; 204. damping telescopic rod B; 205. damping telescopic rod C; 206. a massage plate; 207. a massage block A; 208. a massage block B; 3. a guide frame; 301. a limit groove C; 4. a chute C; 401. a limit groove D; 402. a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the utility model, the following components are added:

embodiment one: referring to fig. 1-8, an office chair back rest structure comprises an office chair 1, a fixing frame 101, a supporting frame 102, a sliding chute A107, a backrest 2 and polyester mesh cloth 201, wherein the fixing frame 101 is fixedly installed on the front side and the rear side of the upper portion of the office chair 1, the supporting frame 102 is rotatably arranged on the opposite sides of the fixing frame 101 through bearings, the sliding chute A107 is embedded in the opposite sides of the supporting frame 102, the backrest 2 is slidably arranged between the inner sides of the sliding chute A107 through sliding blocks, the polyester mesh cloth 201 is fixedly installed on the side of the backrest 2, the polyester mesh cloth 201 is arranged in an arc shape, a height position adjusting mechanism which is convenient for a user to adjust a proper self height is arranged on the outer side of the backrest 2, a rotating angle adjusting mechanism which is convenient for the user to adjust a backrest angle is arranged on the outer side of the supporting frame 102, and a massaging mechanism which is capable of self-adapting to the backrest strength of the user to conduct micro massage processing is arranged in the backrest 2.

Referring to fig. 1, 2, 4 and 6, further, the height position adjusting mechanism is composed of a limit groove B108, a slide groove B202, a limit frame 203 and a damping telescopic rod B204;

the front of the supporting frame 102 is close to the front of the limiting groove B108 and is embedded with the limiting groove B108, the limiting grooves B108 are provided with a plurality of, the four limiting grooves B108 are arranged in parallel at equal intervals, the sliding groove B202 is arranged in the front of the backrest 2 in an up-down opposite manner, the inner side of the sliding groove B202 is slidably provided with the limiting frame 203, the limiting frame 203 is matched with the inner side of the limiting groove B108 in a sliding manner, a damping telescopic rod B204 is fixedly installed between the rear side of the limiting frame 203 and the rear side of the inner wall of the sliding groove B202, a spring is matched with the outer side of the damping telescopic rod B204, when a worker needs to use the office chair 1, the waist leans against the surface of the backrest 2 side polyester mesh 201, the four limiting frames 203 are pushed to slide out of the limiting groove B108, the damping telescopic rod B204 and the outer side spring are driven to shrink, the backrest 2 is pushed to slide upwards or downwards to a proper backrest height through the sliding block in the inner side of the sliding groove A107, the four limiting frames 203 are loosened, the damping telescopic rod B204 and the outer side spring is made to slide into the inner side of the opposite limiting groove B108, when the worker needs to use the office chair 1, the waist leans against the surface of the backrest 2 side, the backrest 2 is adjusted to a proper degree of the backrest 2, and the user can lean against the surface of the backrest 2 more freely, and the user can lean against the backrest 2 at the rest 2 side conveniently, and the rest on the user side.

Referring to fig. 1, 2, 4, 5, and 7, further, the rotation angle adjusting mechanism is composed of an adjusting frame 103, a damping telescopic rod a104, a limiting block 105, a limiting groove a106, a guide frame 3, a limiting groove C301, a sliding groove C4, a limiting groove D401, and a bolt 402;

an adjusting frame 103 is slidably arranged in front of the support frame 102 near the front of the fixing frame 101, a damping telescopic rod A104 is fixedly arranged between the rear of the adjusting frame 103 and the front of the inner wall of the support frame 102, springs are arranged outside the damping telescopic rod A104 in a matched mode, limiting blocks 105 are fixedly arranged around the rear of the adjusting frame 103, limiting grooves A106 are embedded in the front of the fixing frame 101 near the rear of the adjusting frame 103, a plurality of limiting grooves A106 are formed in an equidistant surrounding mode, the limiting blocks 105 are arranged inside the limiting grooves A106 in a fit sliding mode, a guide frame 3 is fixedly arranged on the side of the support frame 102, the guide frame 3 is arranged in an arc-shaped mode, a sliding groove C4 is embedded in the position, close to the guide frame 3, of the front and rear of the office chair 1 is arranged inside the sliding groove C4 in a fit sliding mode, a limiting groove D401 is embedded in the upper portion, close to the sliding groove C4, a limiting groove C301 is embedded in the inner ring of the guide frame 3, the limiting grooves C301 are arranged in a plurality of equidistance and encircling manner, the bolts 402 are arranged between the inner sides of the limiting grooves C301 and the limiting grooves D401 in a sliding manner, when a worker finishes adjusting the height of the backrest 2 and needs to adjust the angle of the backrest 2, the two bolts 402 slide out from between the inner sides of the limiting grooves C301 and the inner sides of the limiting grooves D401, after the guide frame 3 is loosened, the two adjusting frames 103 are pulled to slide out from the inner sides of the supporting frames 102, the damping telescopic rods A104 and the outer side springs are driven to open, the limiting blocks 105 are driven to slide out of the limiting grooves A106, after the adjusting frames 103 are rotated, the supporting frames 102 are driven to rotate through bearings, the guide frame 3 is driven to slide inside the sliding grooves C4, the backrest 2 is driven to rotate to a comfortable leaning angle, the worker releases the adjusting frames 103, the damping telescopic rods A104 and the outer side springs are contracted, the four-side limiting blocks 105 are driven to slide into the inner sides of the corresponding limiting grooves A106 behind the adjusting frames 103, the staff slides two bolts 402 between the opposite limiting groove C301 and the limiting groove D401, the angle adjustment of the backrest 2 is completed, the backrest 2 can be adjusted freely to a comfortable leaning angle by the staff of different ages, and the staff can lean against the surface of the backrest 2 side polyester mesh cloth 201 more comfortably.

Referring to fig. 3, further, the massage mechanism is composed of a damping telescopic rod C205, a massage plate 206 and a massage block a 207;

the back 2 inner wall side fixed mounting has damping telescopic link C205, and damping telescopic link C205 outside is supporting to be provided with the spring, damping telescopic link C205 tip side fixed mounting has massage board 206, massage board 206 side fixed mounting has massage piece A207, massage piece A207 has a plurality of, and be arc form equidistance parallel arrangement, and massage piece A207 and massage board 206 material are natural rubber, after the back 2 is accomplished in the staff's regulation, when back leaned on in back 2 side dacron mesh 201 surface, because of natural rubber material has mechanical strength height, wear-resisting, elasticity is high, withstand voltage and high soft characteristic, will contact natural rubber material massage board 206, and make massage board 206 produce bending deformation, and after pressing damping telescopic link C205 and outside spring shrink, massage board 206 side a plurality of massage piece A207 will produce the resilience through extruded damping telescopic link C205 and outside spring, promote piece A207 to produce less thrust to staff's back, make a plurality of pieces A207 carry out the micro-massage treatment to staff's back, convenience different age section staff leans on back 2 side dacron mesh 201 when surface, through the self-adaptation dacron 206 deformation effect of contacting the face is more comfortable.

Example two

As shown in fig. 8, in the present utility model, in addition to the embodiment in which the massage plate 206 is fixedly provided with the massage blocks a207 laterally, the massage blocks a207 are provided in a plurality and are equidistantly arranged in an arc shape, another embodiment is provided in which the massage plate 206 is fixedly provided with the massage blocks B208 laterally, the massage blocks B208 are provided in a plurality and are equidistantly arranged in a cylindrical shape, and the ends of the massage blocks B208 are arranged in an arc shape, when the back of a worker leans against the surface of the backrest 2 side polyester mesh 201, the massage plate 206 is contacted with the natural rubber material massage plate 206, and the massage plate 206 is bent and deformed, and after the damping telescopic rod C205 and the outer spring are compressed, the massage plate 206 side massage blocks B208 are contacted with the back of the worker through the resilience force generated by the compressed damping telescopic rod C205 and the outer spring, so that the massage block B208 is contacted with the back of the worker in a larger area, and the micro massage is performed more comfortably in a larger area, and the massage effect is better than in the first embodiment.

Working principle: firstly, when a worker needs to use the office chair 1, the worker sits on the surface of the office chair 1, the waist leans against the surface of the side dacron mesh cloth 201 of the backrest 2, pushes the four limiting frames 203 to slide out of the limiting groove B108, drives the damping telescopic rods B204 and the outer springs to shrink, pushes the backrest 2 to slide upwards or downwards to a proper backrest height through the sliding blocks on the inner sides of the sliding grooves A107, releases the four limiting frames 203, enables the damping telescopic rods B204 and the outer springs to pop out of the limiting frames 203 and slide into the inner sides of the opposite limiting grooves B108, completes the height adjustment treatment of the backrest 2, then, when the worker needs to adjust the angle of the backrest 2, slides out of between the limiting grooves C301 and the inner sides of the limiting grooves D401, pulls the two adjusting frames 103 to slide out of the supporting frames 102 after releasing the guide frames 3, drives the damping telescopic rods A104 and the outer springs to open, drives the limiting blocks 105 to slide out of the limiting grooves A106, the rotary adjusting frame 103 drives the supporting frame 102 to rotate through a bearing and drives the guide frame 3 to slide on the inner side of the chute C4, after driving the backrest 2 to rotate to a comfortable leaning angle, a worker releases the adjusting frame 103, so that the damping telescopic rod A104 and the outer side spring shrink, after driving the peripheral limiting block 105 behind the adjusting frame 103 to slide on the inner side of the opposite limiting groove A106, the worker slides two bolts 402 between the opposite limiting groove C301 and the inner side of the limiting groove D401 respectively, the angle adjustment of the backrest 2 is completed, finally, the back of the worker leans against the surface of the terylene mesh 201 on the side of the backrest 2, and the natural rubber material has the characteristics of high mechanical strength, wear resistance, high elasticity, pressure resistance and high softness, and contacts the natural rubber material massage plate 206, and makes the massage plate 206 bend and extrudes the damping telescopic rod C205 and the outer side spring shrink, the massage plate 206 side a plurality of massage blocks A207 will be through the resilience force that extruded damping telescopic link C205 and outside spring produced, promote massage block A207 to produce less thrust to staff's back, make a plurality of massage blocks A207 carry out the micro-massage to the staff's back handle, when convenient different age section staff leaned on back 2 side dacron cloth 201 surface, massage more comfortable effect through the massage plate 206 that contacts adaptive deformation.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (7)

1. The utility model provides an office chair back rest structure, includes office chair (1), mount (101), support frame (102), spout A (107), back (2) and dacron screen cloth (201), relative fixed mounting has mount (101) around office chair (1) top, mount (101) opposite face all rotates through the bearing and is provided with support frame (102), support frame (102) opposite face embedding is provided with spout A (107), be provided with back (2) through the slider slip between spout A (107) inboard, back (2) side fixed mounting has dacron screen cloth (201), and dacron screen cloth (201) are arc form setting, its characterized in that: the utility model discloses a back support, including back support (2), support frame (102), back support (2) outside is provided with the high position adjustment mechanism who facilitates the user to adjust suitable self-height, the support frame (102) outside is provided with the rotation angle adjustment mechanism who facilitates the user to adjust back support angle, but back support (2) inside is provided with the massage mechanism that self-adaptation user back dynamics carries out micro-massage and handles.

2. An office chair back rest structure as claimed in claim 1, wherein: the height position adjusting mechanism consists of a limit groove B (108), a slide groove B (202), a limit frame (203) and a damping telescopic rod B (204);

the front of the support frame (102) is close to the front of the limit groove B (108) and is embedded with the limit groove B (108), the back rest (2) is embedded with the chute B (202) relatively from top to bottom, the inner side of the chute B (202) is slidably provided with the limit frame (203), the limit frame (203) is matched with the inner side of the limit groove B (108), the damping telescopic rod B (204) is fixedly installed between the rear side of the limit frame (203) and the rear side of the inner wall of the chute B (202), and the outer side of the damping telescopic rod B (204) is provided with a spring in a matching mode.

3. An office chair back rest structure as claimed in claim 1, wherein: the rotating angle adjusting mechanism consists of an adjusting frame (103), a damping telescopic rod A (104), a limiting block (105), a limiting groove A (106), a guide frame (3), a limiting groove C (301), a sliding groove C (4), a limiting groove D (401) and a bolt (402);

the utility model discloses a damping telescopic rod, including support frame (102), mount (101) the place ahead is close to the place ahead and slides and be provided with alignment jig (103), fixed mounting has damping telescopic rod A (104) between alignment jig (103) the place ahead and support frame (102) inner wall the place ahead, and damping telescopic rod A (104) outside is provided with the spring in a matched manner, all fixed mounting has stopper (105) all around alignment jig (103) the place ahead, the place ahead is close to alignment jig (103) the place ahead embedding is provided with spacing groove A (106), support frame (102) side fixed mounting has leading truck (3), and leading truck (3) are the arciform setting, office chair (1) the place ahead is close to leading truck (3) the embedding and is provided with spout C (4), and leading truck (3) agrees with the slip setting inboard in spout C (4), office chair (1) top is close to spout C (4) the embedding and is provided with spacing groove D (401), leading truck (3) inner circle embedding is provided with spacing groove C (301), limit groove C (401) and inboard slip (402) are provided with between.

4. An office chair back rest structure as claimed in claim 1, wherein: the massage mechanism consists of a damping telescopic rod C (205), a massage plate (206) and a massage block A (207);

the novel massage backrest is characterized in that a damping telescopic rod C (205) is fixedly mounted on the side of the inner wall of the backrest (2), a spring is arranged on the outer side of the damping telescopic rod C (205) in a matched mode, a massage plate (206) is fixedly mounted on the side of the end portion of the damping telescopic rod C (205), and a massage block A (207) is fixedly mounted on the side of the massage plate (206).

5. An office chair back rest structure as claimed in claim 2, wherein: the limiting grooves B (108) are arranged in parallel at equal intervals.

6. An office chair back rest structure as claimed in claim 3, wherein: the limiting grooves A (106) are formed in a plurality of mode and are equidistantly arranged in a surrounding mode, the limiting blocks (105) are arranged on the inner side of the limiting grooves A (106) in a matched sliding mode, and the limiting grooves C (301) are formed in a plurality of mode and are equidistantly arranged in a surrounding mode.

7. An office chair back rest structure as claimed in claim 4, wherein: the massage blocks A (207) are arranged in parallel at equal intervals in an arc shape, and the massage blocks A (207) and the massage plates (206) are made of natural rubber.