CN215583607U - Anti-toppling backrest structure of office chair - Google Patents
Anti-toppling backrest structure of office chair Download PDFInfo
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- CN215583607U CN215583607U CN202122303246.4U CN202122303246U CN215583607U CN 215583607 U CN215583607 U CN 215583607U CN 202122303246 U CN202122303246 U CN 202122303246U CN 215583607 U CN215583607 U CN 215583607U
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Abstract
The utility model belongs to the field of seats, and particularly relates to an anti-toppling backrest structure of an office chair, which comprises a seat, wherein a backrest is installed on one side of the top of the seat, a groove is formed in one side of the backrest, rotating rods are rotatably installed on the inner walls of two sides of the groove, supporting rods are fixedly sleeved on the rotating rods, outer gears are installed on the rotating rods, a moving groove is formed in the inner wall of the top of the groove, a moving rod is slidably installed in the moving groove, an arc-shaped inner gear is installed at the bottom end of the moving rod and is meshed with the outer gears, an elastic assembly is installed at the top end of the moving rod, the top end of the elastic assembly is installed on the moving groove, a pull rod is installed on one side of the moving rod and extends to the outer side of the backrest, a thread groove is formed in the bottom end of the supporting rod, and a threaded rod is installed in the thread groove. The backrest support device is reasonable in design, and the backrest can be supported by adjusting the support rod and the support plate, so that the seat can be prevented from toppling.
Description
Technical Field
The utility model relates to the technical field of chairs, in particular to an anti-toppling backrest structure of an office chair.
Background
Office furniture is a tool which is convenient for office workers or working in daily life and work and social activities, and the existing office chairs have various styles and bring great convenience for the work of the workers.
Present office chair, the angle that most can both be to the back is adjusted to the staff of being convenient for lies down the rest, and the back is adjusted at that time, makes the seat focus change, when the staff has a rest, causes empting of seat easily, therefore we have proposed a back structure is prevented empting by office chair and is used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the gravity center of a seat is changed after a backrest is adjusted, and the seat is easy to topple when a worker has a rest in the prior art, and provides an anti-toppling backrest structure of an office chair.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a backrest structure is prevented empting by office chair, which comprises a seat, the back is installed to top one side of seat, one side of back is seted up flutedly, rotate on the both sides inner wall of recess and install the dwang, fixed cover is equipped with the bracing piece on the dwang, install the external gear on the dwang, the shifting chute has been seted up on the top inner wall of recess, slidable mounting has the carriage release lever in the shifting chute, the arc internal gear is installed to the bottom of carriage release lever, and the arc internal gear meshes with the external gear mutually, elastic component is installed on the top of carriage release lever, and elastic component's top is installed on the shifting chute, the pull rod is installed to one side of carriage release lever, and the pull rod extends to the outside of back, the thread groove has been seted up to the bottom of bracing piece, the threaded rod is installed to the thread groove internal thread, the backup pad is installed to the bottom of threaded rod.
Preferably, two armrests are installed on the seat, and protection pads are arranged at the tops of the armrests.
Preferably, two symmetrically arranged fixing springs are installed at the top of the arc-shaped inner gear, and the top ends of the fixing springs are installed on the inner wall of the top of the groove.
Preferably, a sliding hole is formed in the inner wall of one side of the moving groove, and the pull rod is connected with the corresponding sliding hole in a sliding mode.
Preferably, the inner walls of the two sides of the groove are provided with rotating grooves, and the rotating rods are rotatably connected with the corresponding rotating grooves.
Preferably, the bottom of seat installs the telescopic link, and the bottom of telescopic link is installed and is placed the seat, and a plurality of gyro wheels are installed to the bottom of placing the seat.
The utility model has the beneficial effects that:
1. when workers need to have a lunch break, the angle of the backrest can be adjusted by rotating the backrest, and the support rod can be fixed and released by matching the pull rod, the moving rod and the arc-shaped inner gear, so that the support rod can be conveniently adjusted;
2. through rotating the backup pad, the threaded rod that the backup pad can rotates, under the effect of thread groove for the threaded rod moves while rotating, makes the backup pad remove downwards and contact with ground, and through the cooperation of backup pad and bracing piece this moment, can support the back, can place empting of seat.
Drawings
FIG. 1 is a schematic perspective view of an anti-toppling backrest structure of an office chair according to the present invention;
FIG. 2 is a schematic front view of an anti-toppling backrest structure of an office chair according to the present invention;
FIG. 3 is a schematic structural view of part A of an anti-toppling backrest structure of an office chair according to the present invention;
fig. 4 is a schematic structural diagram of part B of an anti-toppling backrest structure of an office chair according to the present invention.
In the figure: 1. a seat; 2. a handrail; 3. a backrest; 4. a groove; 5. rotating the rod; 6. a support bar; 7. an outer gear; 8. a moving groove; 9. a travel bar; 10. an arc-shaped inner gear; 11. an elastic component; 12. a pull rod; 13. a thread groove; 14. a threaded rod; 15. and a support plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an anti-toppling backrest structure of an office chair comprises a chair 1, a backrest 3 is installed on one side of the top of the chair 1, a groove 4 is formed on one side of the backrest 3, a rotating rod 5 is rotatably installed on the inner walls of two sides of the groove 4, a support rod 6 is fixedly sleeved on the rotating rod 5, an outer gear 7 is installed on the rotating rod 5, a moving groove 8 is formed on the inner wall of the top of the groove 4, a moving rod 9 is slidably installed in the moving groove 8, an arc-shaped inner gear 10 is installed at the bottom end of the moving rod 9, the arc-shaped inner gear 10 is meshed with the outer gear 7, an elastic component 11 is installed at the top end of the moving rod 9, the top end of the elastic component 11 is installed on the moving groove 8, a pull rod 12 is installed on one side of the moving rod 9, the pull rod 12 extends to the outer side of the backrest 3, a thread groove 13 is formed at the bottom end of the support rod 6, and a threaded rod 14 is installed in the thread groove 13, the bottom end of the threaded rod 14 is provided with a supporting plate 15, and the supporting rod can be fixed and released through the matching of the pull rod 12, the moving rod 9 and the arc-shaped internal gear 10, so that the supporting rod can be adjusted conveniently.
In this embodiment, install two handrail 2 on seat 1, the top of handrail 2 is equipped with the protection pad, and the fixed spring that two symmetries set up is installed at the top of arc internal gear 10, and the top of fixed spring installs on the top inner wall of recess 4, and through being provided with fixed spring, fixed spring can promote arc internal gear 10 and reset.
In this embodiment, a sliding hole is formed in the inner wall of one side of the moving groove 8, the pull rod 12 is slidably connected to the corresponding sliding hole, and the pull rod 12 can be stably moved by being provided with the sliding hole.
In this embodiment, all seted up the rotation groove on the both sides inner wall of recess 4, and dwang 5 rotates with the rotation groove that corresponds to be connected, through being provided with the rotation groove, can make dwang 5 carry out stable rotation.
In this embodiment, the telescopic link is installed to the bottom of seat 1, and the bottom of telescopic link is installed and is placed the seat, and a plurality of gyro wheels are installed to the bottom of placing the seat, are convenient for remove seat body 1 through being provided with the gyro wheel.
In the utility model, when a worker needs noon break, the angle of the backrest 3 can be adjusted by rotating the backrest 3, at the moment, the pull rod 12 can drive the moving rod 9 to move by moving the pull rod 12, the moving rod 9 can drive the arc-shaped internal gear 10 to move and compress the elastic component 11, so that the arc-shaped internal gear 10 is separated from the external gear 7, the supporting rod 6 can be moved out of the groove, the arc-shaped internal gear 10 is reset and meshed with the external gear 7 by loosening the pull rod 12, and the supporting rod 6 can be fixed;
through rotating the support plate 15, the threaded rod 14 that the support plate 15 can rotate, under the effect of thread groove 13 for the threaded rod 14 moves while rotating, makes the support plate 15 move down and contact with ground, and through the cooperation of support plate 15 and bracing piece 6, can support back 3 this moment, can place empting of seat.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a backrest structure is prevented empting by office chair, includes seat (1), its characterized in that, back (3) are installed to top one side of seat (1), one side of back (3) is seted up flutedly (4), it installs dwang (5) to rotate on the both sides inner wall of recess (4), fixed cover is equipped with bracing piece (6) on dwang (5), install outer gear (7) on dwang (5), the shifting chute (8) has been seted up on the top inner wall of recess (4), slidable mounting has carriage release lever (9) in shifting chute (8), arc inner gear (10) are installed to the bottom of carriage release lever (9), just arc inner gear (10) mesh with outer gear (7), elastic component (11) are installed on the top of carriage release lever (9), just the top of elastic component (11) is installed on shifting chute (8), pull rod (12) are installed to one side of carriage release lever (9), just pull rod (12) extend to the outside of back (3), thread groove (13) have been seted up to the bottom of bracing piece (6), threaded rod (14) are installed to thread groove (13) internal thread, backup pad (15) are installed to the bottom of threaded rod (14).
2. An anti-toppling backrest structure of an office chair as claimed in claim 1, characterized in that two armrests (2) are installed on the seat (1), and a protective pad is arranged on the top of the armrests (2).
3. An anti-toppling backrest structure of an office chair as claimed in claim 1, wherein two symmetrically arranged fixing springs are installed on the top of the arc-shaped internal gear (10), and the top ends of the fixing springs are installed on the inner wall of the top of the groove (4).
4. The anti-toppling backrest structure of an office chair as claimed in claim 1, wherein a sliding hole is formed on one side inner wall of the moving groove (8), and the pull rod (12) is slidably connected with the corresponding sliding hole.
5. The anti-toppling backrest structure of an office chair as claimed in claim 1, wherein the inner walls of the two sides of the groove (4) are provided with a rotating groove, and the rotating rod (5) is rotatably connected with the corresponding rotating groove.
6. The anti-toppling backrest structure of an office chair as claimed in claim 1, wherein the bottom end of the seat (1) is provided with a telescopic rod, the bottom end of the telescopic rod is provided with a placing seat, and the bottom of the placing seat is provided with a plurality of rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122303246.4U CN215583607U (en) | 2021-09-23 | 2021-09-23 | Anti-toppling backrest structure of office chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122303246.4U CN215583607U (en) | 2021-09-23 | 2021-09-23 | Anti-toppling backrest structure of office chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215583607U true CN215583607U (en) | 2022-01-21 |
Family
ID=79886931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122303246.4U Active CN215583607U (en) | 2021-09-23 | 2021-09-23 | Anti-toppling backrest structure of office chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215583607U (en) |
-
2021
- 2021-09-23 CN CN202122303246.4U patent/CN215583607U/en active Active
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