CN214156777U

CN214156777U - Leg rest structure of office chair

Info

Publication number: CN214156777U
Application number: CN202022915729.5U
Authority: CN
Inventors: 吕拥锋
Original assignee: Zhejiang Anji Yongfeng Furniture Co ltd
Current assignee: Zhejiang Anji Yongfeng Furniture Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-09-10
Anticipated expiration: 2030-12-08

Abstract

The utility model provides a bracket structure of office chair belongs to office chair technical field. The utility model provides a bracket structure of office chair, sets up in office chair cushion below, be in including first footrest, setting first footrest both sides and with first spliced pole of connection can be dismantled to first footrest bottom, with the nut of first spliced pole bottom rigid coupling, with nut threaded connection's screw rod, drive the drive assembly of screw rod motion, first footrest is kept away from the one end of first spliced pole articulates there is the second footrest, the one end of first footrest is provided with and is used for supporting the backup pad of second footrest. The utility model discloses an extension length of footrest is adjusted in the cooperation transmission of screw rod and nut, through rotating the handle, can carry out the accuracy to the extension length of footrest and adjust, satisfies the requirement of the user of different heights to the footrest.

Description

Leg rest structure of office chair

Technical Field

The utility model relates to an office chair technical field, concretely relates to bracket structure of office chair.

Background

Normal office chair does not possess the function of bracket, and the staff perhaps prepares a deck chair in addition when noon break, or lies prone and rest on the desk, though can lean on the rest after leaning on to the office chair that the back of the chair can incline and face upward, nevertheless the drop of foot state also can't reach a more comfortable rest state. Some current office chair set up the structure of the bracket that can stretch in its cushion bottom, but the cushion part front and back length is limited makes the biggest extension length of bracket structure also receive the restriction, simultaneously for guaranteeing sufficient extension, the structure of bracket probably runs through the bottom of whole cushion anyhow, and the installation space of cushion bottom is limited, not only structurally increases the limitation of installation burden and installation, also can influence the wholeness and the aesthetic property of whole seat in the wholeness simultaneously.

The application number '201911193836.7' discloses a chair seat structure with a foot rest, which comprises a seat surface, a base arranged at the bottom of the seat surface and a foot rest mechanism arranged on the base, wherein the foot rest mechanism comprises at least one group of slide rail components, a fixing piece used for detachably connecting the slide rail components with the base and a foot rest arranged at the front end of the slide rail components; the sliding rail assembly comprises a first section of sliding rail, a second section of sliding rail and a third section of sliding rail, the second section of sliding rail is sleeved outside the first section of sliding rail, the third section of sliding rail is sleeved outside the second section of sliding rail, the first section of sliding rail can slide along the second section of sliding rail, and the second section of sliding rail can slide along the first section of sliding rail and the third section of sliding rail; the third section of slide rail is connected with the fixing piece, a first stop component for controlling the extension length of the first section of slide rail relative to the second section of slide rail is arranged between the first section of slide rail and the second section of slide rail, and a second stop component for controlling the extension length of the second section of slide rail relative to the third section of slide rail is arranged between the second section of slide rail and the third section of slide rail; the base front end is seted up with the chamber of accomodating of footrest adaptation, and the base is including the seat that is located the top prop the board and be located the seat cavity board of bottom.

The disadvantages of the above patent are: 1. although the length of the footrest mechanism of the seat can be adjusted, the adjustment range is limited, and the length of the footrest can not be accurately adjusted in the adjustment process by adopting the slide rail to adjust the length; 2. the three-section sliding rail structure has high requirements on the installation space at the bottom of the chair seat and processing requirements, and improves the production cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to accurately adjust the extension length of the footrest and provide a footrest structure of an office chair aiming at the defects of the prior art.

The utility model provides a footrest structure of office chair sets up in office chair cushion below, be in including first footrest, setting first footrest both sides and with first spliced pole of connection can be dismantled to first footrest bottom, with the nut of first spliced pole bottom rigid coupling, with nut threaded connection's screw rod, drive screw rod motion's drive assembly, first footrest is kept away from the one end of first spliced pole articulates there is the second footrest, the one end of first footrest is provided with and is used for supporting the backup pad of second footrest.

Preferably, the driving assembly comprises a first gear fixedly connected with the screw, a second gear in meshing transmission with the first gear, and a first transmission shaft fixedly connected with the second gear.

Preferably, the first gear and the second gear are both helical gears.

Preferably, a first connecting shaft is fixedly arranged between the nuts, a plurality of second connecting columns used for supporting the first footrest are fixedly arranged on the first connecting shaft, and the second connecting columns are detachably connected with the first footrest.

Preferably, the number of the second connecting posts is preferably 3.

Preferably, one end of the screw rod, which is far away from the first connecting column, is provided with a limit stop.

Preferably, a handle is fixedly arranged at one end of the first transmission shaft.

Preferably, the first footrest is hinged with the second footrest through a pin shaft.

Preferably, the first footrest and the second footrest are both provided with sponge pads.

The utility model discloses a bracket structure of office chair has following beneficial effect:

1. the utility model discloses an extension length of footrest is adjusted in the cooperation transmission of screw rod and nut, the manual work rotates the handle, rotate through gear drive screw, the nut is because the rotation of screw rod carries out the back-and-forth movement, drive first footrest and stretch out or resume the normal position from the cushion bottom, first footrest stretches out the back, open the second footrest again, make the length of footrest obtain the extension of maximum length, and through rotating the handle, can carry out the accurate regulation to the extension length of footrest, satisfy the requirement of the user of different heights to the footrest.

2. The utility model discloses a first footrest and second footrest all can be dismantled, and convenient to use person washs it, and when the user does not need the footrest, first footrest and the equal holding of second footrest have reduced the potential safety hazard in the cushion bottom, and are succinctly pleasing to the eye.

3. The utility model discloses simple structure, processing convenience, with low costs.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

Fig. 1 is a schematic structural view of a leg rest structure of an office chair according to an embodiment of the present invention.

Fig. 2 is a bottom view of a leg rest structure of an office chair according to an embodiment of the present invention.

In the figure, 1, a cushion; 2. a first footrest; 3. a first connecting column; 4. a nut; 5. a second connecting column; 6. a screw; 601. a limit stop block; 7. a second footrest; 701. a support plate; 8. a drive assembly; 801. a first transmission shaft; 802. a second gear; 803. a first gear; 9. a handle; 10. a first connecting shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The first embodiment is as follows: as shown in fig. 1-2, which is only one embodiment of the present invention, a footrest structure of an office chair is disposed below a cushion 1 of the office chair, and includes a first footrest 2, a first connecting column 3 disposed on two sides of the first footrest 2 and detachably connected to the bottom of the first footrest 2, a nut 4 fixedly connected to the bottom of the first connecting column 3, a screw 6 connected to the nut 4 by a thread, and a driving component 8 for driving the screw 6 to move, wherein one end of the first footrest 2 away from the first connecting column 3 is hinged to a second footrest 7, and one end of the first footrest 2 is provided with a supporting plate 701 for supporting the second footrest 7.

The utility model discloses in, drive assembly 8 includes with the gear 803 of screw rod 6 rigid coupling, with the second 802 of the two 802 of the driven gear of the 803 meshing transmission of gear, with the first 801 of the transmission shaft of the two 802 rigid couplings of gear. It should be noted here that the driving assembly 8 may be driven by not only a gear but also a chain wheel and a chain, and in order to make the transmission of the first footrest 2 smoother, the present embodiment adopts a gear transmission.

The first gear 803 and the second gear 802 may be helical gears or straight gears, and for convenience of installation and installation space saving, helical gears are preferably used.

One end of the screw 6, which is far away from the first connecting column 3, is provided with a limit stop 601, which limits the stroke of the screw 4 and ensures the stability of movement.

The working principle of the leg rest structure of the office chair is as follows: when a user needs to use the footrest, the handle 9 is manually rotated, the handle 9 drives the first transmission shaft 801 to rotate, the first transmission shaft 801 drives the second gear 802 to rotate together, the second gear 802 and the first gear 803 are in meshed transmission, the screw rod 6 is further rotated, the nut 4 on the screw rod 6 moves forwards until the nut 4 moves to the second footrest 7 and completely extends out, and then the second footrest 7 is opened; if the user needs to adjust the extended length of the footrest, the handle 9 can be turned further to extend or shorten the extended length of the footrest. When the user need pack up the footrest structure, only need to overturn second footrest 7 to first footrest 2 on, rotate handle 9 again for first footrest 2 moves to the bedplate bottom.

The utility model discloses a screw rod 6 and nut 4's cooperation transmission adjust the extension length of footrest, the manual work rotates handle 9, rotate through gear drive screw rod 6, nut 4 is because screw rod 6's rotation carries out the back-and-forth movement, it stretches out or resumes the normal position to drive first footrest 2 from 1 bottom of cushion, first footrest 2 stretches out the back, open second footrest 7 again, make the length of footrest obtain the extension of maximum length, and through rotating handle 9, can carry out the accurate regulation to the extension length of footrest, satisfy the requirement of the user of different heights to the footrest.

Example two: as shown in fig. 1-2, only one embodiment of the present invention is that, on the basis of the first embodiment, in the footrest structure of the office chair, a first connecting shaft 10 is fixedly arranged between nuts 4, a second connecting column 5 for supporting a first footrest 2 is fixedly arranged on the first connecting shaft 10, the second connecting column 5 is detachably connected with the first footrest 2, and the number of the second connecting columns 5 is preferably 3 in consideration of the limited installation space. The bottom of first footrest 2 not only is provided with the first mounting hole with 3 clearance fit of first spliced pole, still is provided with the second mounting hole with 5 clearance fit of second spliced pole, under the circumstances of the stationarity of guaranteeing first footrest 2, can realize the dismantlement of first footrest 2, is convenient for wash first footrest 2 and second footrest 7.

The first footrest 2 is hinged with the second footrest 7 through a pin shaft. When the user needs to pack up the footrest structure, the second footrest 7 is turned over to the first footrest 2, so that the placement space is saved.

The first footrest 2 and the second footrest 7 are both provided with sponge pads. The user can get more comfortable experience when using the utility model.

The above-described embodiments can be implemented individually or in various combinations, and such variations are within the scope of the present invention.

It should be noted that, in the description of the present application, it should be noted that the terms "upper end", "lower end" and "bottom end" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the application is usually placed in when the product of the application is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a bracket structure of office chair sets up in office chair cushion (1) below, its characterized in that: including first footrest (2), set up first footrest (2) both sides and with first spliced pole (3) of connection can be dismantled to first footrest (2) bottom, with nut (4) of first spliced pole (3) bottom rigid coupling, with screw rod (6), the drive of nut (4) threaded connection screw rod (6) motion drive assembly (8), keep away from in first footrest (2) the one end of first spliced pole (3) articulates there is second footrest (7), the one end of first footrest (2) is provided with and is used for supporting backup pad (701) of second footrest (7).

2. An office chair leg rest structure as claimed in claim 1, wherein: the driving assembly (8) comprises a first gear (803) fixedly connected with the screw rod (6), a second gear (802) in meshing transmission with the first gear (803), and a first transmission shaft (801) fixedly connected with the second gear (802).

3. An office chair leg rest structure as claimed in claim 2, wherein: the first gear (803) and the second gear (802) are both helical gears.

4. An office chair leg rest structure as claimed in claim 1, wherein: set firmly first connecting axle (10) between nut (4), set firmly on first connecting axle (10) and be used for supporting a plurality of second spliced pole (5) of first footrest (2), second spliced pole (5) with first footrest (2) can be dismantled and be connected.

5. An office chair leg rest structure as claimed in claim 4, wherein: the number of the second connecting columns (5) is preferably 3.

6. An office chair leg rest structure as claimed in claim 1, wherein: and a limit stop (601) is arranged at one end, far away from the first connecting column (3), of the screw rod (6).

7. An office chair leg rest structure as claimed in claim 2, wherein: one end of the first transmission shaft (801) is fixedly provided with a handle (9).

8. An office chair leg rest structure as claimed in claim 1, wherein: the first footrest (2) is hinged with the second footrest (7) through a pin shaft.

9. An office chair leg rest structure as claimed in claim 1, wherein: the first footrest (2) and the second footrest (7) are both provided with spongy cushions.