CN217218539U - Adjustable office chair backrest - Google Patents
Adjustable office chair backrest Download PDFInfo
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- CN217218539U CN217218539U CN202220631871.3U CN202220631871U CN217218539U CN 217218539 U CN217218539 U CN 217218539U CN 202220631871 U CN202220631871 U CN 202220631871U CN 217218539 U CN217218539 U CN 217218539U
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- adjustable
- backrest
- adjusting
- office chair
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Abstract
An adjustable office chair backrest comprises a back supporting seat and a backrest piece which are connected with each other; the top of the backrest part is rotationally connected with the back support seat, an adjustable telescopic part is arranged between the bottom of the backrest part and the back support seat, and the adjustable telescopic part adjusts the distance between the bottom of the backrest part and the back support seat; an adjusting base is formed on the back supporting seat, and the adjustable telescopic piece is sleeved on the adjusting base; a plurality of adjusting grooves arranged along the length direction of the adjusting base are formed on the adjusting base, and clamping pieces corresponding to the adjusting grooves are formed on the adjustable telescopic pieces; compared with the prior art, through the regulation base that sets up adjustable extensible member and looks adaptation, adjust the interval between back of the body bottom and the back supporting seat, and rotate between back of the body top and the back supporting seat and be connected, adjusting the interval in-process between back of the body bottom and the back supporting seat, the whole angle that leans against between the body and the back supporting seat changes, the regulation of the back of the body of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of the office chair, especially, office chair back with adjustable.
Background
The leisure chair is a daily life furniture, and is a seat with a backrest and armrests, wherein modern chairs pursue beauty and fashion, some chairs are not used as seats alone, and the life of human beings is more convenient under the combination of science and technology.
The backrest of the conventional leisure chair is usually of a fixed structure, is difficult to adjust according to different users, and has certain limitation.
Chinese patent No. CN207784741U is a backrest device, which comprises a horizontal rail, a vertical rail and two backrest units; each backrest unit comprises an abutting piece, a buffering part and a transverse adjusting piece, the abutting piece is installed on the transverse adjusting piece through the buffering part, and the transverse adjusting piece is installed at one end of the transverse rail and can drive the backrest units to move along the transverse rail; the transverse rail is installed on the vertical rail through a vertical adjusting piece and can move along the vertical rail.
The backrest device disclosed by the above has certain limitations because the backrest is synchronously driven to move in the process of moving the adjusting piece through the arrangement of the vertical rail and the transverse rail, and the backrest device is used for adjusting the position of the backrest and cannot adjust the angle between the backrest and a human body.
Meanwhile, the existing backrest angle is adjusted usually in a knob mode, the supporting force is poor, and the follow-up maintenance and repair are inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the defect among the above-mentioned prior art, provide one kind and be convenient for adjust, simple structure, stable in structure's adjustable office chair back.
In order to achieve the above purpose, the utility model adopts the technical scheme that: an adjustable office chair backrest comprises a back supporting seat and a backrest piece which are connected; the top of the backrest part is rotationally connected with the back support seat, an adjustable telescopic part is arranged between the bottom of the backrest part and the back support seat, and the adjustable telescopic part adjusts the distance between the bottom of the backrest part and the back support seat; an adjusting base is formed on the back supporting seat, and the adjustable telescopic piece is sleeved on the adjusting base; a plurality of adjusting grooves are formed in the adjusting base along the length direction of the adjusting base, and clamping pieces corresponding to the adjusting grooves are formed in the adjustable telescopic pieces.
As a preferred scheme of the utility model, be formed with the cooperation groove corresponding with joint spare on the extensible member with adjustable, joint spare rotates to be connected on the extensible member with adjustable.
As a preferred scheme of the utility model, joint spare middle part is formed with both sides and is formed with the pivot of relative setting, is formed with the rotation groove with pivot looks adaptation on the extensible member with adjustable, rotates the relative both sides that the trench is located the cooperation groove.
As the utility model discloses a preferred scheme, joint spare one end is formed with the joint piece, and the joint piece size is corresponding with the adjustment tank size, and is formed with the through-hole corresponding with the joint piece on the extensible member with adjustable.
As a preferred scheme of the utility model, still be formed with on the joint spare and press the sign, press the relative both sides that sign and joint piece are located the joint spare, and press the relative both ends that sign and joint piece are located the joint spare.
As a preferred scheme of the utility model, still be formed with on the joint spare and press the indent, be formed with on the extensible member with adjustable and press the arch with the indent corresponding, press the homonymy that indent and joint piece are located joint spare, and press the relative both ends that indent and joint piece are located joint spare, press the indent and press the sign position corresponding.
As a preferred scheme of the utility model, adjust the outer tip of base and be the echelonment structure, adjustable extensible member tip is formed with the corresponding ladder face with the regulation base.
As a preferred scheme of the utility model, the outer tip of extensible member with adjustable is corresponding with the inclination of backrest, and is formed with the connecting hole on the extensible member with adjustable, and the connecting hole is corresponding with the ladder face.
As a preferable scheme of the present invention, the backrest part is formed with a fitting hole corresponding to the connecting hole.
As an optimized scheme of the utility model, be equipped with the back shaft between back rest top and the back supporting seat, cup jointed the torsional spring on the back shaft.
The beneficial effects of the utility model are that, compare with prior art:
1. the distance between the bottom of the backrest part and the back support seat is adjusted by arranging the adjustable telescopic part and the adaptive adjusting base, the top of the backrest part is rotatably connected with the back support seat, and in the process of adjusting the distance between the bottom of the backrest part and the back support seat, the angle between the integral backrest part and the back support seat is changed, so that the adjustment of the backrest part is facilitated;
2. through the cooperation of joint piece and adjustment tank, adjust the interval between back of the body portion and the back supporting seat, wherein lever principle takes place at joint piece middle part under the effect of cooperation groove, through the one end of pressing joint piece, realizes the regulation to the joint piece other end to be convenient for joint piece and the cooperation groove be connected.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 is a front view of the present invention;
FIG. 4 is a schematic view of a back support;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a partial enlarged view at B in FIG. 4;
FIG. 7 is a schematic view of the connection between the adjustable expansion member and the clamping member;
FIG. 8 is a schematic view of an adjustable telescopic member;
FIG. 9 is a schematic structural view of the clip;
FIG. 10 is a schematic view of the structure of the clip;
reference numbers in the figures: the back support seat comprises a back support seat 1, a backrest part 2, a matching hole 2-1, an adjustable telescopic part 3, a matching groove 3-1, a rotating groove 3-2, a through hole 3-3, a pressing protrusion 3-4, a step surface 3-5, a connecting hole 3-6, an adjusting base 4, an adjusting groove 4-1, a clamping part 5, a rotating shaft 5-1, a clamping block 5-2, a pressing groove 5-3, a pressing mark 5-4, a support shaft 6 and a torsion spring 7.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-10, an adjustable office chair back comprises a back support seat 1 and a back rest 2 which are connected with each other; the top of the backrest 2 is rotatably connected with the back support seat 1, an adjustable telescopic part 3 is arranged between the bottom of the backrest 2 and the back support seat 1, and the adjustable telescopic part 3 adjusts the distance between the bottom of the backrest 2 and the back support seat 1; an adjusting base 4 is formed on the back supporting seat 1, and the adjustable telescopic piece 3 is sleeved on the adjusting base 4; a plurality of adjusting grooves 4-1 arranged along the length direction of the adjusting base 4 are formed on the adjusting base 4, and clamping pieces 5 corresponding to the adjusting grooves 4-1 are formed on the adjustable telescopic pieces 3.
The adjusting groove 4-1 is horizontally arranged, the top of the backrest 2 is rotatably connected with the back supporting seat 1 in the telescopic process of the adjusting groove 4-1, and the angle between the top of the backrest 2 and the back supporting seat 1 is changed along with the telescopic process of the adjusting groove 4-1.
The adjustable telescopic part 3 is provided with a matching groove 3-1 corresponding to the clamping part 5, the clamping part 5 is rotatably connected to the adjustable telescopic part 3, the middle part of the clamping part 5 is provided with a rotating shaft 5-1 which is oppositely arranged at two sides, the adjustable telescopic part 3 is provided with a rotating groove 3-2 matched with the rotating shaft 5-1, and the rotating groove 3-2 is positioned at two opposite sides of the matching groove 3-1.
The rotating shaft 5-1 is clamped in the matching groove 3-1, and the clamping piece 5 rotates under the action of the rotating shaft 5-1 by pressing one end of the clamping piece 5, so that the clamping piece 5 is convenient to match with the adjusting groove 4-1 under the rotating action of the clamping piece 5.
One end of the clamping piece 5 is provided with a clamping block 5-2, the size of the clamping block 5-2 corresponds to that of the adjusting groove 4-1, and the adjustable telescopic piece 3 is provided with a through hole 3-3 corresponding to the clamping block 5-2.
The adjusting grooves 4-1 are sequentially arranged along the length direction of the adjusting base 4, the number of the adjusting grooves 4-1 is set according to actual needs, the size of the clamping block 5-2 is consistent with that of the single adjusting groove 4-1, and when the clamping block 5-2 is embedded in the adjusting groove 4-1, the clamping block 5-2 is tightly attached to the adjusting groove 4-1, so that the adjustable telescopic piece 3 and the adjusting base 4 have good stability.
Under the pressing action, one end of the clamping piece 5 moves inwards, and then one end of the clamping piece 5-2 is driven to upwarp, so that the connection between the clamping piece 5-2 and the adjusting groove 4-1 is disconnected, the adjustable telescopic piece 3 is moved to enable the clamping piece 5 to correspond to different clamping pieces 5-2, and the positions of the adjustable telescopic piece 3 and the adjusting base 4 are adjusted.
The clamping piece 5 is further provided with a pressing mark 5-4, the pressing mark 5-4 and the clamping block 5-2 are located on two opposite sides of the clamping piece 5, the pressing mark 5-4 and the clamping block 5-2 are located on two opposite ends of the clamping piece 5, the pressing mark 5-4 is convenient for an operator to recognize, meanwhile, an arrow mark is formed on the pressing mark 5-4, and the arrow mark is in the moving direction of the adjustable telescopic piece 3.
The clamping piece 5 is also provided with a pressing groove 5-3, the adjustable telescopic piece 3 is provided with a pressing bulge 3-4 corresponding to the pressing groove 5-3, the pressing groove 5-3 and the clamping block 5-2 are positioned on the same side of the clamping piece 5, the pressing groove 5-3 and the clamping block 5-2 are positioned at two opposite ends of the clamping piece 5, and the pressing groove 5-3 corresponds to the pressing mark 5-4.
When an operator presses the pressing mark 5-4, the pressing groove 5-3 is synchronously driven to move, so that the pressing protrusion 3-4 is pressed under the action of the pressing groove 5-3, the pressing protrusion 3-4 can be made of sponge memory materials, the pressing protrusion 3-4 resets under the action of the pressing mark 5-4 without the action of external force, and the clamping block 5-2 and the adjusting groove 4-1 are stably clamped under the action of a lever principle.
The outer end part of the adjusting base 4 is a stepped structure 4-2, the end part of the adjustable telescopic part 3 is provided with a stepped surface 3-5 corresponding to the adjusting base 4, and the adjusting base 4 and the adjustable telescopic part 3 are connected more stably and reliably under the action of the stepped structure 4-2 and the stepped surface 3-5.
The outer end part of the adjustable telescopic part 3 corresponds to the inclination angle of the backrest part 2, a connecting hole 3-6 is formed in the adjustable telescopic part 3, the connecting hole 3-6 corresponds to the step surface 3-5, the outer end part of the adjustable telescopic part 3 is tightly attached to the inner side of the backrest part 2, so that the outer end part of the adjustable telescopic part 3 and the backrest part 2 have better stability, a matching hole 2-1 corresponding to the connecting hole 3-6 is formed in the backrest part 2, and connecting bolts are arranged in the matching hole 2-1 and the connecting hole 3-6.
Be equipped with back shaft 6 between 2 tops of back spare and the back supporting seat 1, cup jointed torsional spring 7 on the back shaft 6, 2 tops of back spare encircle back shaft 6 and rotate, and torsional spring 7 makes back spare 2 compress tightly with back supporting seat 1 as far as possible, has better stability.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the adjustable back cushion comprises a back supporting seat 1, a back rest part 2, a matching hole 2-1, an adjustable telescopic part 3, a matching groove 3-1, a rotating groove 3-2, a through hole 3-3, a pressing protrusion 3-4, a step surface 3-5, a connecting hole 3-6, an adjusting base 4, an adjusting groove 4-1, a clamping part 5, a rotating shaft 5-1, a clamping block 5-2, a pressing groove 5-3, a pressing mark 5-4, a supporting shaft 6, a torsion spring 7 and other terms, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. An adjustable office chair backrest comprises a back supporting seat (1) and a backrest piece (2) which are connected with each other; the adjustable backrest is characterized in that the top of the backrest piece (2) is rotatably connected with the back support seat (1), an adjustable telescopic piece (3) is arranged between the bottom of the backrest piece (2) and the back support seat (1), and the adjustable telescopic piece (3) is used for adjusting the distance between the bottom of the backrest piece (2) and the back support seat (1); an adjusting base (4) is formed on the back supporting base (1), and the adjustable telescopic piece (3) is sleeved on the adjusting base (4); a plurality of adjusting grooves (4-1) arranged along the length direction of the adjusting base (4) are formed on the adjusting base (4), and clamping pieces (5) corresponding to the adjusting grooves (4-1) are formed on the adjustable telescopic pieces (3).
2. The adjustable office chair back rest as claimed in claim 1, wherein the adjustable expansion member (3) is formed with a fitting groove (3-1) corresponding to the snap member (5), and the snap member (5) is rotatably connected to the adjustable expansion member (3).
3. The adjustable office chair back rest as claimed in claim 2, wherein the middle part of the clamping member (5) is formed with two oppositely arranged rotating shafts (5-1) at two sides, the adjustable telescopic member (3) is formed with a rotating groove (3-2) matched with the rotating shafts (5-1), and the rotating groove (3-2) is positioned at two opposite sides of the matching groove (3-1).
4. The adjustable office chair back rest as claimed in claim 3, wherein one end of the clamping member (5) is formed with a clamping block (5-2), the size of the clamping block (5-2) corresponds to the size of the adjusting groove (4-1), and the adjustable telescopic member (3) is formed with a through hole (3-3) corresponding to the clamping block (5-2).
5. The adjustable office chair back rest as claimed in claim 4, wherein the clamping member (5) is further formed with a pressing mark (5-4), the pressing mark (5-4) and the clamping block (5-2) are located at opposite sides of the clamping member (5), and the pressing mark (5-4) and the clamping block (5-2) are located at opposite ends of the clamping member (5).
6. The adjustable office chair back rest as claimed in claim 5, wherein the pressing groove (5-3) is further formed on the clamping member (5), the pressing protrusion (3-4) corresponding to the pressing groove (5-3) is formed on the adjustable telescopic member (3), the pressing groove (5-3) and the clamping block (5-2) are located on the same side of the clamping member (5), the pressing groove (5-3) and the clamping block (5-2) are located at opposite ends of the clamping member (5), and the pressing groove (5-3) corresponds to the pressing mark (5-4).
7. The adjustable office chair back rest as claimed in claim 1, wherein the outer end of the adjusting base (4) is a stepped structure (4-2), and the end of the adjustable telescopic part (3) is formed with a stepped surface (3-5) corresponding to the adjusting base (4).
8. An adjustable office chair back according to claim 7, characterized in that the outer end of the adjustable telescopic part (3) corresponds to the inclination angle of the backrest part (2), and the adjustable telescopic part (3) is formed with connecting holes (3-6), and the connecting holes (3-6) correspond to the step surfaces (3-5).
9. An adjustable office chair back according to claim 8, wherein the backrest (2) is formed with a fitting hole (2-1) corresponding to the coupling hole (3-6).
10. The adjustable office chair back according to claim 1, wherein a support shaft (6) is arranged between the top of the backrest (2) and the back support seat (1), and the support shaft (6) is sleeved with a torsion spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220631871.3U CN217218539U (en) | 2022-03-23 | 2022-03-23 | Adjustable office chair backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220631871.3U CN217218539U (en) | 2022-03-23 | 2022-03-23 | Adjustable office chair backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217218539U true CN217218539U (en) | 2022-08-19 |
Family
ID=82842626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220631871.3U Active CN217218539U (en) | 2022-03-23 | 2022-03-23 | Adjustable office chair backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217218539U (en) |
-
2022
- 2022-03-23 CN CN202220631871.3U patent/CN217218539U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |