CN212015073U - Office chair with foldable backrest - Google Patents
Office chair with foldable backrest Download PDFInfo
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- CN212015073U CN212015073U CN202020331971.5U CN202020331971U CN212015073U CN 212015073 U CN212015073 U CN 212015073U CN 202020331971 U CN202020331971 U CN 202020331971U CN 212015073 U CN212015073 U CN 212015073U
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- backrest
- limiting
- mounting
- hole
- seat frame
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Abstract
The utility model relates to an office chair technical field specifically is a folding office chair of back. An office chair with a foldable backrest comprises a chair seat frame; a backrest; a rotation structure connecting the seat frame and the backrest and allowing the backrest to rotate relative to the seat frame; and the limiting structure is used for detachably connecting the chair seat frame and the backrest. The backrest of the office chair can rotate relative to the chair seat frame through the rotating structure, and can be disassembled and assembled with the chair seat frame through the limiting structure, so that the folding function of the backrest can be realized; when the backrest of this application is installed, only need rotate the backrest in order to slide into the pilot hole with flexible gag lever post can, the backrest when folding, only need press the press head then rotate the backrest can, it is very convenient to operate, has improved user's use and has experienced the sense.
Description
Technical Field
The utility model relates to an office chair technical field specifically is a folding office chair of back.
Background
The office chair is one of the most frequently used articles in offices, and the backrest and the seat of the existing office chair are fixedly connected, so that the space is large, the transportation is inconvenient, and the transportation cost is high. Therefore, in the prior art, the backrest and the seat are arranged to be detachably connected, but the dismounting process is complex, the use experience of a user is reduced, parts of the office chair are easy to lose in the packaging and transporting process, and further unnecessary troubles are brought to buyers and sellers.
Application number is CN 201220262203.4's patent discloses an office chair that back can be folding, including chair foot, tray, seatpad frame, back frame, parcel and handrail at seatpad frame and the parcel of back frame surface, the rear portion of seatpad frame upwards extends and is equipped with connecting bolt and back frame swing joint, the rear surface of parcel is equipped with the connecting chain. When in transportation and storage, the bolts are removed, the armrests are taken down, the lap chains are opened, and the backrest frame is rotated forwards, so that the occupied space can be reduced, and the transportation and storage cost is saved. The office chair of this structure still need carry out the dismouting operation at the folding in-process of back for the folding operation of back is complicated, and spare part also easily loses, leads to user's use to experience and feels poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a folding office chair of convenient back of operation to the problem that prior art exists.
The utility model provides a technical scheme that its technical problem adopted is: an office chair with a foldable backrest comprises
A chair seat frame;
a backrest;
a rotation structure connecting the seat frame and the backrest and allowing the backrest to rotate relative to the seat frame;
and the limiting structure is used for detachably connecting the chair seat frame and the backrest.
Preferably, the limiting structure comprises
The pressing moving piece comprises a pressing head, a limiting ring body and an ejector rod which are sequentially arranged in the axial direction;
the limiting telescopic piece comprises a telescopic limiting rod, a guide ring body and an installation rod which are sequentially arranged in the axial direction;
the pressing moving piece mounting structure is arranged on the chair seat frame and is used for mounting the pressing moving piece;
the limiting telescopic piece mounting structure is arranged on the backrest and used for mounting the limiting telescopic piece;
the pressing moving member mounting structure allows the telescopic limiting rod to enter to fix the seat frame and the backrest, and the pressing moving member is used for ejecting the telescopic limiting rod out of the pressing moving member mounting structure to separate the seat frame and the backrest.
Preferably, the pressing moving member mounting structure includes
The pressing moving piece mounting groove is provided with a first mounting hole in matched connection with the pressing head, a second mounting hole in matched connection with the limiting ring body and a threaded mounting hole;
the pressing moving piece assembly part is provided with an assembly hole in matched connection with the ejector rod and the telescopic limiting rod, a raised ring in inserted connection with the mounting hole II and a threaded butt joint hole in matched connection with the threaded mounting hole;
and the first spring is sleeved with the ejector rod, one axial end of the first spring is in contact connection with the axial end part of the limiting ring body, and the other axial end of the first spring is in contact connection with the axial end part of the raised ring.
Preferably, the limit expansion piece mounting structure comprises
The limiting telescopic piece mounting cavity is used for accommodating the mounting rod;
the limiting expansion piece mounting groove is provided with a connecting hole which is communicated with the limiting expansion piece mounting cavity and is in matched connection with the guide ring body, and a threaded mounting hole II;
the limiting telescopic part assembly part is provided with a second assembly hole which is in matched connection with the telescopic limiting rod and a second threaded butt joint hole which is in matched arrangement with the second threaded mounting hole;
and the second spring is sleeved on the mounting rod and partially protrudes out of the mounting rod.
Preferably, the limiting structure further comprises
The positioning lead-in groove is arranged on the side of the pressing moving member mounting groove and is matched with the assembling hole;
and the positioning block is arranged on the backrest and is matched and connected with the positioning leading-in groove.
Preferably, the limiting structure further comprises
The limiting lug is arranged on the side of the bottom end of the backrest;
the limit stop block is arranged on the chair seat frame and matched with the limit bump.
Preferably, the rotating structure comprises
The rotating connecting hole is arranged on the backrest;
the limiting guide ring is arranged inside the rotating connecting hole, and the radius of the outer ring of the limiting guide ring is smaller than the aperture of the rotating connecting hole so as to form an inserting gap;
the rotary butt joint hole is arranged on the chair seat frame;
the plug ring is sleeved with the inner hole wall of the rotary butt joint hole, and the axial end of the plug ring protrudes out of the rotary butt joint hole to be in clearance fit connection with the plug;
and the check ring is sleeved with the inner ring wall of the inserting ring to abut against the axial free end of the limiting guide ring.
Preferably, the backrest is hollow.
Advantageous effects
The backrest of the office chair can rotate relative to the chair seat frame through the rotating structure, and can be disassembled and assembled with the chair seat frame through the limiting structure, so that the folding function of the backrest can be realized; when the backrest of this application is installed, only need rotate the backrest in order to slide into the pilot hole with flexible gag lever post can, the backrest when folding, only need press the press head then rotate the backrest can, it is very convenient to operate, has improved user's use and has experienced the sense.
Drawings
FIG. 1 is a schematic view of the integral connection structure of the backrest and the seat frame according to the present application;
FIG. 2 is a schematic view of a limiting structure of the present application;
FIG. 3 is a schematic view of a structure of the present application showing the engagement between a bump and a bump stop;
FIG. 4 is a schematic view of the positioning lead-in groove of the present application;
FIG. 5 is a schematic view of a spacing telescoping member mounting arrangement of the present application;
FIG. 6 is a schematic view of the present application showing the structure of the pressing moving member and the limiting expansion member;
FIG. 7 is a schematic view of the present application pressing the moving member assembly;
FIG. 8 is a schematic view of the present application illustrating a mounting groove for pressing a moving member;
FIG. 9 is a schematic structural view of a mounting groove of the spacing expansion member of the present application;
FIG. 10 is a schematic view of the assembly structure of the spacing expansion part and the spacing expansion part mounting groove according to the present application;
FIG. 11 is a schematic view of a retainer telescoping assembly of the present application;
FIG. 12 is a schematic structural view of the rotation connecting hole and the position limiting guide ring of the present application;
fig. 13 is a schematic structural view of the rotary docking hole and the docking ring of the present application.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, an office chair with a foldable backrest comprises a seat frame 1, a backrest 2, a rotating structure and a limiting structure.
As shown in fig. 12 and 13, a rotation structure connects the seat frame 1 and the backrest 2, allowing the backrest 2 to rotate relative to the seat frame 1. The rotating structure comprises a rotating connecting hole 91, a limiting guide ring 92, a rotating butt-joint hole, an inserting ring 93 and a retainer ring 94.
The rotation connecting hole 91 is arranged on the backrest 2, and the limiting guide ring 92 is arranged inside the rotation connecting hole 91, and the radius of the outer ring of the limiting guide ring is smaller than the aperture of the rotation connecting hole 91 to form an insertion gap. The rotary butt joint hole is formed in the chair seat frame 1, the inserting ring 93 is sleeved with the inner hole wall of the rotary butt joint hole, and the axial end of the inserting ring 93 protrudes out of the rotary butt joint hole to be connected with the inserting gap in a matched mode. The retainer ring 94 is sleeved with the inner ring wall of the inserting ring 93 to abut against the axial free end of the limiting guide ring 92.
After the installation, the inserting ring 94 is located in the inserting gap and is sleeved with the limiting guide ring 92, and the limiting guide ring 92 can coaxially rotate relative to the inserting ring 94, so that the backrest 2 can rotate relative to the seat frame 1.
As shown in fig. 2 to 11, a limiting structure is used to detachably connect the seat frame 1 and the backrest 2. The limiting structure comprises a pressing moving member 3, a limiting telescopic member 4, a pressing moving member mounting structure and a limiting telescopic member mounting structure.
The pressing moving member 3 includes a pressing head 31, a retainer ring body 32 and a plunger 33 which are axially arranged in sequence. The limit telescopic part 4 comprises a telescopic limit rod 41, a guide ring body 42 and a mounting rod 43 which are sequentially arranged in the axial direction. The pressing moving member mounting structure is arranged on the chair seat frame 1 and used for mounting the pressing moving member 3, and the limiting telescopic member mounting structure is arranged on the backrest 2 and used for mounting the limiting telescopic member 4. The push moving member mounting structure allows the entry of the telescopic stopper rod 41 to fix the seat frame 1 and the backrest 2, and the push moving member 3 is used to eject the telescopic stopper rod 41 out of the push moving member mounting structure to separate the seat frame 1 and the backrest 2.
The pressing moving member mounting structure comprises a pressing moving member mounting groove 11, a pressing moving member assembly part 5 and a first spring. The pressing moving member mounting groove 11 is provided with a first mounting hole matched and connected with the pressing head 31, a second mounting hole matched and connected with the limiting ring body 32, and a threaded mounting hole. The pressing moving piece assembly part 5 is provided with an assembly hole 51 which is matched and connected with the ejector rod 33 and the telescopic limiting rod 41, a convex ring 52 which is inserted into the second mounting hole, and a threaded butt joint hole 53 which is matched and arranged with the threaded mounting hole. The first spring is sleeved with the ejector rod 33, one axial end of the first spring is in contact connection with the axial end of the limiting ring body 32, and the other axial end of the first spring is in contact connection with the axial end of the raised ring 52.
The limiting telescopic piece mounting structure comprises a limiting telescopic piece mounting cavity 21, a limiting telescopic piece mounting groove 22, a limiting telescopic piece assembly part 6 and a second spring. Spacing extensible member installation cavity 21 is used for the holding installation pole 43, spacing extensible member mounting groove 22 be equipped with spacing extensible member installation cavity 21 intercommunication and with the connecting hole that the guide ring body 42 cooperation is connected to and screw thread mounting hole two. The limiting telescopic part assembly part 6 is provided with a second assembly hole 61 connected with the telescopic limiting rod 41 in a matched mode, and a second thread butt joint hole 62 arranged in a matched mode in the second thread mounting hole. The spring is sleeved on the mounting rod 43 and partially protrudes out of the mounting rod 43.
When the backrest 2 rotates to the position-limiting telescopic assembly part 6 to coincide with the pressing of the moving member assembly part 5, the telescopic limiting rod 41 is snapped into the assembly hole 51, so that the backrest 2 and the seat frame 1 are fixed. When the backrest 2 needs to be folded, the pressing head 31 can be pressed, so that the whole movable member 3 is pressed to move towards the backrest 2, the ejector rod 33 of the movable member 3 can eject the telescopic limiting rod 41 out of the assembly hole 51, and the backrest 2 is separated from the seat frame 1. In the process that the telescopic limiting rod 41 is pressed, the limiting telescopic part 4 integrally moves back to the seat frame 1, and in the moving process, the mounting rod 43 compresses the second spring. When the backrest 2 and the seat frame 1 are separated by rotation, the pressing moving member 3 can be restored to the initial position through the first spring, and the limiting expansion member 4 can be restored to the initial position through the second spring.
The limiting structure further comprises a positioning lead-in groove 71 and a positioning block 72. The positioning guide groove 71 is provided on the side of the pressing moving member mounting groove 11 and is fitted to the fitting hole 51. The positioning block 72 is provided on the backrest 2 and is connected to the positioning introduction groove 71 in a fitting manner. The positioning guide-in groove 71 is convenient for guiding the telescopic limiting rod 41 into the assembly hole 51, and is matched with the positioning block 7 for use so as to facilitate the mutual positioning of the limiting telescopic assembly part 6 and the pressing moving assembly part 5, and the installation convenience of the backrest 2 and the seat frame 1 is improved.
The limiting structure further comprises a limiting bump 81 and a limiting stopper 82. The limit bump 81 is arranged on the side of the bottom end of the backrest 2, and the limit stopper 82 is arranged on the seat frame 1 and the limit bump 81. The arrangement of the limit bump 81 and the limit stopper 82 further plays a role in limiting and positioning, and improves the stability of the backrest.
The whole weight of back 2 fretwork settings in order to alleviate the back to make the limit structure of this application more stable.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.
Claims (8)
1. An office chair with a foldable backrest is characterized in that: comprises that
A seat frame (1);
a backrest (2);
a rotating structure connecting the seat frame (1) and the backrest (2) and allowing the backrest (2) to rotate relative to the seat frame (1);
and the limiting structure is used for detachably connecting the chair seat frame (1) and the backrest (2).
2. An office chair with a foldable backrest as claimed in claim 1, wherein: the limiting structure comprises
The pressing moving piece (3) comprises a pressing head (31), a limiting ring body (32) and an ejector rod (33) which are sequentially arranged in the axial direction;
the limiting telescopic part (4) comprises a telescopic limiting rod (41), a guide ring body (42) and a mounting rod (43) which are axially and sequentially arranged;
a pressing moving member mounting structure provided on the seat frame (1) and mounting the pressing moving member (3);
the limiting telescopic piece mounting structure is arranged on the backrest (2) and used for mounting the limiting telescopic piece (4);
the pressing moving member mounting structure allows the telescopic limiting rod (41) to enter to fix the seat frame (1) and the backrest (2), and the pressing moving member (3) is used for ejecting the telescopic limiting rod (41) out of the pressing moving member mounting structure to separate the seat frame (1) and the backrest (2).
3. An office chair with a foldable backrest as claimed in claim 2, wherein: the pressing moving member mounting structure includes
The pressing moving piece mounting groove (11) is provided with a first mounting hole matched and connected with the pressing head (31), a second mounting hole matched and connected with the limiting ring body (32), and a threaded mounting hole;
the pressing moving piece assembly part (5) is provided with an assembly hole (51) which is in matched connection with the ejector rod (33) and the telescopic limiting rod (41), a raised ring (52) which is inserted into the mounting hole II, and a threaded butt joint hole (53) which is matched with the threaded mounting hole;
and the first spring is sleeved with the ejector rod (33), one axial end of the first spring is in contact connection with the axial end part of the limiting ring body (32), and the other axial end of the first spring is in contact connection with the axial end part of the raised ring (52).
4. An office chair with a foldable backrest as claimed in claim 3, wherein: the limiting telescopic part mounting structure comprises
The limiting telescopic piece mounting cavity (21) is used for accommodating the mounting rod (43);
the limiting telescopic piece mounting groove (22) is provided with a connecting hole which is communicated with the limiting telescopic piece mounting cavity (21) and is in matched connection with the guide ring body (42), and a threaded mounting hole II;
the limiting telescopic part assembly part (6) is provided with a second assembly hole (61) which is in matched connection with the telescopic limiting rod (41) and a second threaded butt joint hole (62) which is in matched arrangement with the second threaded mounting hole;
and the second spring is sleeved on the mounting rod (43) and partially protrudes out of the mounting rod (43).
5. An office chair with a foldable backrest as claimed in claim 3, wherein: the limit structure also comprises
A positioning lead-in groove (71) which is arranged at the side of the pressing moving member mounting groove (11) and is matched with the assembling hole (51);
and the positioning block (72) is arranged on the backrest (2) and is matched and connected with the positioning lead-in groove (71).
6. An office chair with a foldable backrest as claimed in claim 2, wherein: the limit structure also comprises
The limiting convex block (81) is arranged on the side of the bottom end of the backrest (2);
and the limit stop block (82) is arranged on the chair seat frame (1) and is matched with the limit bump (81).
7. An office chair with a foldable backrest as claimed in claim 1, wherein: the rotating structure comprises
A rotation connecting hole (91) provided in the backrest (2);
the limiting guide ring (92) is arranged inside the rotating connecting hole (91) and the radius of the outer ring of the limiting guide ring is smaller than the aperture of the rotating connecting hole (91) so as to form an inserting gap;
the rotary butt joint hole is arranged in the chair seat frame (1);
the plug-in ring (93) is sleeved with the inner hole wall of the rotary butt joint hole, and the axial end of the plug-in ring (93) protrudes out of the rotary butt joint hole to be connected with the plug-in gap in a matched mode;
and the retainer ring (94) is sleeved with the inner ring wall of the plug ring (93) to abut against the axial free end of the limiting guide ring (92).
8. An office chair with a foldable backrest as claimed in claim 1, wherein: the backrest (2) is arranged in a hollow manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020331971.5U CN212015073U (en) | 2020-03-17 | 2020-03-17 | Office chair with foldable backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020331971.5U CN212015073U (en) | 2020-03-17 | 2020-03-17 | Office chair with foldable backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212015073U true CN212015073U (en) | 2020-11-27 |
Family
ID=73483622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020331971.5U Active CN212015073U (en) | 2020-03-17 | 2020-03-17 | Office chair with foldable backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212015073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428899A (en) * | 2020-11-30 | 2021-03-02 | 重庆长安汽车股份有限公司 | Seat hinge structure and seat back mounting structure |
-
2020
- 2020-03-17 CN CN202020331971.5U patent/CN212015073U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428899A (en) * | 2020-11-30 | 2021-03-02 | 重庆长安汽车股份有限公司 | Seat hinge structure and seat back mounting structure |
| CN112428899B (en) * | 2020-11-30 | 2022-09-06 | 重庆长安汽车股份有限公司 | Seat hinge structure and seat back mounting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211231 Address after: 313000 Di Pu Jie Dao Wan Mu Cun, Anji County, Huzhou City, Zhejiang Province Patentee after: Anji Tongtong Furniture Co.,Ltd. Address before: 313000 Di Pu Jie Dao Wan Mu Cun, Anji County, Huzhou City, Zhejiang Province Patentee before: ANJI CHANGTONG FURNITURE FACTORY |
|
| TR01 | Transfer of patent right |