CN220898314U - Office chair with adjustable backrest - Google Patents
Office chair with adjustable backrest Download PDFInfo
- Publication number
- CN220898314U CN220898314U CN202322847023.3U CN202322847023U CN220898314U CN 220898314 U CN220898314 U CN 220898314U CN 202322847023 U CN202322847023 U CN 202322847023U CN 220898314 U CN220898314 U CN 220898314U
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- China
- Prior art keywords
- headrest
- plate
- screw rod
- fixedly connected
- seat
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- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000003028 elevating effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 abstract description 6
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The utility model discloses an office chair with an adjustable backrest, which comprises a movable base, wherein the top of the movable base is fixedly connected with a seat plate through a support column, armrests are symmetrically arranged at the top of the seat plate, a headrest lifting mechanism is fixedly arranged on the right side of the seat plate, a backrest body is fixedly arranged on the left side of the headrest lifting mechanism through two support seats, and a headrest fine-tuning mechanism is fixedly arranged on the movable end of the headrest lifting mechanism; the headrest lifting mechanism comprises a fixed plate, a cavity is formed in the fixed plate, and rolling bearings are symmetrically arranged at the top and the bottom of the inner wall of the cavity. This adjustable office chair of back, structural design is reasonable, convenient to use adopts adjustable headrest, can adjust its height and front and back position according to user's height to guaranteed that people can have higher comfort level when using the headrest rest, satisfied people's user demand comprehensively.
Description
Technical Field
The utility model relates to the technical field of office chairs, in particular to an office chair with an adjustable backrest.
Background
At present, most of the existing office chairs are provided with a headrest connected with a backrest, however, most of the existing office chairs are directly fixed on the backrest and cannot be adjusted according to the height of a user, so that people cannot have higher comfort level when resting by using the headrest, and the use requirement is difficult to meet.
Disclosure of utility model
The utility model aims to provide an office chair with an adjustable backrest, which solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the office chair with the adjustable backrest comprises a movable base, wherein the top of the movable base is fixedly connected with a seat plate through a support column, armrests are symmetrically arranged at the top of the seat plate, a headrest lifting mechanism is fixedly arranged on the right side of the seat plate, a backrest body is fixedly arranged on the left side of the headrest lifting mechanism through two support seats, and a headrest fine-tuning mechanism is fixedly arranged at the movable end of the headrest lifting mechanism;
The headrest elevating system includes the fixed plate, the cavity has been seted up to the inside of fixed plate, antifriction bearing is installed to the top and the bottom symmetry of cavity inner wall, rotates between two antifriction bearings and is connected with first screw rod, there is the lifter plate along axial threaded connection on the first screw rod, the vaulting pole is installed to the top symmetry of lifter plate, the top of vaulting pole runs through to the fixed plate outside, the fixed surface of first screw rod is connected with driven bevel gear, the right side of fixed plate is equipped with the roating seat, the left end of roating seat runs through to the inside fixedly connected with of cavity and driven bevel gear cooperation use's drive bevel gear.
Further, headrest fine-tuning includes the connecting plate, the right side fixed mounting of connecting plate has the riser, the top of connecting plate is equipped with the translation piece, limit slide and connecting plate top sliding connection are passed through to the bottom of translation piece, the right side of riser is equipped with the second screw rod, the left end of second screw rod runs through the riser and extends to the inside fixedly connected with commentaries on classics piece of translation piece, swing joint between commentaries on classics piece and the translation piece, the left side fixedly connected with headrest body of translation piece.
Further, the right end of the second screw rod is fixedly connected with a rocking handle, and the second screw rod is in threaded connection with the vertical plate.
Further, the fixed plate is fixedly connected to the right side of the seat plate, the support seat is fixedly arranged on the left side of the fixed plate, and the connecting plate is fixedly arranged at the top ends of the two support rods.
Further, a soft cushion is fixedly connected to the top of the seat plate, and the soft cushion is a sponge cushion.
Compared with the prior art, the utility model has the following beneficial effects:
When the height of the headrest body is required to be adjusted, the rotary seat can be rotated, the driving bevel gear drives the driven bevel gear to rotate, the first screw rod is driven to rotate under the connection support of the two rolling bearings, the lifting plate which is in threaded connection with the first screw rod can drive the headrest fine adjustment mechanism to vertically move under the connection of the two supporting rods, when the headrest body is required to be subjected to front and back position fine adjustment, the second screw rod can be rotated, the rotary block can be driven to rotationally move through the threaded connection with the vertical plate, the rotary block can push the translation block to move under the limit guide of the limit sliding block, and further fine adjustment of the position of the headrest body is realized.
Drawings
FIG. 1 is a cross-sectional view of a front view of the structure of the present utility model;
FIG. 2 is a schematic side view of the present utility model;
FIG. 3 is a sectional view showing the front view of the headrest elevating mechanism of the present utility model;
fig. 4 is a cross-sectional view showing a front view of the headrest fine adjustment mechanism according to the present utility model.
In the figure: 1 moving base, 2 support posts, 3 seat plates, 4 armrests, 5 headrest lifting mechanisms, 51 fixing plates, 52 cavities, 53 rolling bearings, 54 first screw rods, 55 lifting plates, 56 supporting rods, 57 driven bevel gears, 58 rotating seats, 59 driving bevel gears, 6 supporting seats, 7 backrest bodies, 8 headrest fine adjustment mechanisms, 81 connecting plates, 82 vertical plates, 83 translation blocks, 84 limit sliding blocks, 85 second screw rods, 86 rotating blocks, 87 headrest bodies, 88 rocking handles and 9 soft cushions.
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.
Referring to fig. 1-4, an office chair with an adjustable backrest comprises a movable base 1, wherein a seat plate 3 is fixedly connected to the top of the movable base 1 through a support post 2, armrests 4 are symmetrically arranged on the top of the seat plate 3, a headrest lifting mechanism 5 is fixedly arranged on the right side of the seat plate 3, a backrest body 7 is fixedly arranged on the left side of the headrest lifting mechanism 5 through two support seats 6, and a headrest fine-tuning mechanism 8 is fixedly arranged on the movable end of the headrest lifting mechanism 5.
The headrest elevating mechanism 5 comprises a fixed plate 51, a cavity 52 is formed in the fixed plate 51, rolling bearings 53 are symmetrically arranged at the top and the bottom of the inner wall of the cavity 52, a first screw rod 54 is rotatably connected between the two rolling bearings 53, an elevating plate 55 is axially and threadedly connected to the first screw rod 54, a supporting rod 56 is symmetrically arranged at the top of the elevating plate 55, the top end of the supporting rod 56 penetrates to the outside of the fixed plate 51, a driven bevel gear 57 is fixedly connected to the surface of the first screw rod 54, a rotating seat 58 is arranged on the right side of the fixed plate 51, and a driving bevel gear 59 matched with the driven bevel gear 57 is fixedly connected to the left end of the rotating seat 58 and penetrates to the inside of the cavity 52.
Specifically, the headrest fine adjustment mechanism 8 includes the connecting plate 81, the right side fixed mounting of connecting plate 81 has riser 82, the top of connecting plate 81 is equipped with translation piece 83, the bottom of translation piece 83 is through spacing slider 84 and connecting plate 81 top sliding connection, the right side of riser 82 is equipped with second screw rod 85, the left end of second screw rod 85 runs through riser 82 and extends to translation piece 83 inside fixedly connected with commentaries on classics piece 86, swing joint between commentaries on classics piece 86 and the translation piece 83, the left side fixedly connected with headrest body 87 of translation piece 83.
Specifically, the right end of the second screw rod 85 is fixedly connected with a rocking handle 88, and the second screw rod 85 is in threaded connection with the vertical plate 82.
Specifically, the fixing plate 51 is fixedly connected to the right side of the seat plate 3, the stay 6 is fixedly mounted to the left side of the fixing plate 51, and the connecting plate 81 is fixedly mounted to the top ends of the two stay bars 56.
Specifically, cushion 9 is fixedly connected with at the top of seat 3, and cushion 9 specifically adopts the foam-rubber cushion, and cushion 9 has improved the comfort level that the user sits on seat 3.
This adjustable office chair of back, structural design is reasonable, convenient to use adopts adjustable headrest, can adjust its height and front and back position according to user's height to guaranteed that people can have higher comfort level when using the headrest rest, satisfied people's user demand comprehensively.
When the headrest body 87 is required to be adjusted in height, the rotary seat 58 can be rotated, so that the driving bevel gear 59 drives the driven bevel gear 57 to rotate, and then drives the first screw rod 54 to rotate under the connection support of the two rolling bearings 53, the lifting plate 55 in threaded connection with the lifting plate can drive the headrest fine adjustment mechanism 8 to vertically move under the connection of the two supporting rods 56, when the headrest body 87 is required to be subjected to front and rear position fine adjustment, the second screw rod 85 can be rotated, the rotating block 86 can be driven to rotate through the threaded connection with the vertical plate 82, the translation block 83 can be pushed to move by the rotating block 86 under the limit guide of the limit sliding block 84, and further fine adjustment of the position of the headrest body 87 is realized.
Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An office chair with an adjustable backrest, comprising a movable base (1), characterized in that: the top of the movable base (1) is fixedly connected with a seat plate (3) through a support column (2), handrails (4) are symmetrically arranged at the top of the seat plate (3), a headrest lifting mechanism (5) is fixedly arranged on the right side of the seat plate (3), a backrest body (7) is fixedly arranged on the left side of the headrest lifting mechanism (5) through two support seats (6), and a headrest fine-tuning mechanism (8) is fixedly arranged on the movable end of the headrest lifting mechanism (5);
Headrest elevating system (5) are including fixed plate (51), cavity (52) have been seted up to the inside of fixed plate (51), antifriction bearing (53) are installed to the top and the bottom symmetry of cavity (52) inner wall, rotate between two antifriction bearing (53) and be connected with first screw rod (54), along axial threaded connection on first screw rod (54) have lifter plate (55), stay bar (56) are installed to the top symmetry of lifter plate (55), the top of stay bar (56) runs through to the outside of fixed plate (51), the fixed surface of first screw rod (54) is connected with driven bevel gear (57), the right side of fixed plate (51) is equipped with roating seat (58), the left end of roating seat (58) runs through to inside fixedly connected with of cavity (52) and driven bevel gear (57) cooperation use initiative bevel gear (59).
2. The back adjustable office chair of claim 1, wherein: headrest fine-tuning (8) include connecting plate (81), the right side fixed mounting of connecting plate (81) has riser (82), the top of connecting plate (81) is equipped with translation piece (83), the bottom of translation piece (83) is through spacing slider (84) and connecting plate (81) top sliding connection, the right side of riser (82) is equipped with second screw rod (85), the left end of second screw rod (85) runs through riser (82) and extends to translation piece (83) inside fixedly connected with commentaries on classics piece (86), swing joint between commentaries on classics piece (86) and translation piece (83), the left side fixedly connected with headrest body (87) of translation piece (83).
3. The back adjustable office chair of claim 2, wherein: the right end of the second screw rod (85) is fixedly connected with a rocking handle (88), and the second screw rod (85) is in threaded connection with the vertical plate (82).
4. A backrest adjustable office chair as claimed in claim 3 wherein: the fixing plate (51) is fixedly connected to the right side of the seat plate (3), the supporting seat (6) is fixedly arranged on the left side of the fixing plate (51), and the connecting plate (81) is fixedly arranged at the top ends of the two supporting rods (56).
5. The back adjustable office chair of claim 4 wherein: the top of the seat plate (3) is fixedly connected with a soft cushion (9), and the soft cushion (9) is a sponge cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322847023.3U CN220898314U (en) | 2023-10-23 | 2023-10-23 | Office chair with adjustable backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322847023.3U CN220898314U (en) | 2023-10-23 | 2023-10-23 | Office chair with adjustable backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220898314U true CN220898314U (en) | 2024-05-07 |
Family
ID=90920686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322847023.3U Active CN220898314U (en) | 2023-10-23 | 2023-10-23 | Office chair with adjustable backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220898314U (en) |
-
2023
- 2023-10-23 CN CN202322847023.3U patent/CN220898314U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |