CN211269534U - Chair with adjustable backrest - Google Patents
Chair with adjustable backrest Download PDFInfo
- Publication number
- CN211269534U CN211269534U CN201922151908.3U CN201922151908U CN211269534U CN 211269534 U CN211269534 U CN 211269534U CN 201922151908 U CN201922151908 U CN 201922151908U CN 211269534 U CN211269534 U CN 211269534U
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- China
- Prior art keywords
- hole
- backrest
- chair
- subassembly
- connecting rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The utility model discloses a chair with adjustable back, including back subassembly, one end and back subassembly fixed connection's back coupling assembling, with back subassembly's other end fixed connection's seat subassembly to and fix the support seat subassembly in seat subassembly below, its characterized in that: backrest coupling assembling include a Y type connecting piece, both sides respectively are equipped with a U type hole about the Y type connecting piece, Y type connecting piece lower extreme fixed connection connecting rod, the vertical fixing of connecting rod lower extreme is on a fixed block, the fixed block is fixed in seat subassembly one side, the backrest subassembly including controlling two backs, be equipped with the screw on the back, use rotatory bolt to pass respectively the U type hole that sets up on the Y type connecting piece with control two backs on the screw thread fixed connection that set up. The chair provided by the utility model has the advantages that the backrest can be flexibly and conveniently stretched and retracted outwards and adjusted up and down, and is suitable for users with different heights and body types.
Description
Technical Field
The utility model relates to a chair, more specifically the theory that says so, it especially relates to a chair with adjustable back.
Background
The chair is an essential tool for people to study, live and work at ordinary times, particularly, a swivel chair and an I-shaped chair appear, the backrest of the swivel chair and the I-shaped chair generally have the human engineering principle, the backrest of the swivel chair and the I-shaped chair have better wrapping performance on the back of a person, and a comfortable environment is provided for a user.
The existing swivel chair and I-shaped chair generally adopt a whole backrest, the backrest is fixedly connected with a cushion, the height of the backrest cannot be adjusted, and meanwhile, the width of the backrest cannot be adjusted, so that when people with different body shapes use the swivel chair or the I-shaped chair, better backrest experience feeling cannot be obtained due to the difference of body shapes, discomfort feeling of the back can be caused sometimes, and unnecessary damage can be caused to the back in the past for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a chair, which has the advantages that the height and the width of the chair backrest can be adjusted at will, thereby being suitable for users with different heights or body types.
The utility model aims at realizing through the following technical scheme: the utility model provides a chair with adjustable back, includes back subassembly, one end and back subassembly fixed connection's back coupling assembling, back subassembly's other end fixed connection's seat subassembly to and fix the support seat subassembly in seat subassembly below, its characterized in that: backrest coupling assembling include a Y type connecting piece, both sides respectively are equipped with a U type hole about the Y type connecting piece, Y type connecting piece lower extreme fixed connection connecting rod, the vertical fixing of connecting rod lower extreme is on a fixed block, the fixed block is fixed in seat subassembly one side, the backrest subassembly including controlling two backs, be equipped with the screw on the back, use rotatory bolt to pass respectively the U type hole that sets up on the Y type connecting piece with control two backs on the screw thread fixed connection that set up.
Furthermore, a bar-shaped connecting block is fixedly installed on each of the left backrest and the right backrest, a screw hole is formed in each bar-shaped connecting block, and a rotating bolt penetrates through the U-shaped hole and is fixedly connected with the screw hole through threads.
Through the technical scheme, the backrest of the chair can be stretched outwards to change the width of the backrest, and the height of the backrest is slightly lifted.
Further, Y type connecting piece lower extreme be equipped with a vertical mounting groove, the connecting rod upper end is connected with mounting groove interference fit.
Furthermore, a transverse through screw hole is formed in the mounting groove at the lower end of the Y-shaped connecting piece, a through hole is also formed in one end of the connecting rod in interference fit connection with the mounting groove, and bolts penetrate through the screw hole and the through hole respectively and are fixedly connected through threads.
Further, the connecting rod lower extreme still overlap and establish a axle sleeve, the axle sleeve include a cover body, set up the cover edge of cover body upper end still is provided with a plurality of fore-and-aft U type grooves on the cover body, and the cover body lower extreme outside is provided with the fin, the fixed block is equipped with a vertical through hole, the lower pot head of connecting rod is established pass behind the axle sleeve the through hole, interference fit connects fixedly.
Furthermore, a transverse screw hole is formed in the wall of the through hole of the fixing block, a plurality of longitudinally arranged adjusting holes are formed in two sides of the lower end of the connecting rod, corresponding through holes are formed in the shaft sleeve, and the connecting rod, the shaft sleeve and the fixing block sequentially penetrate through the screw hole, the through holes and the connecting holes through a rotating bolt to be further fixed.
Through the technical scheme, the height of the backrest can be adjusted in a lifting mode.
Furthermore, the supporting seat assembly comprises a five-star foot and a roller which is connected with the five-star foot in a matched mode, an air rod which is vertically fixed at the center of the five-star foot and a tray which is connected with the upper portion of the air rod in a matched mode, and the tray is fixedly installed at the bottom of the seat plate assembly.
Furthermore, the supporting seat assembly is an I-shaped frame, and the upper surface of the I-shaped frame is fixedly arranged at the bottom of the seat plate assembly.
Furthermore, the supporting part of the I-shaped frame contacting with the ground is also provided with a foot pad, and the foot pad is connected with the I-shaped frame in a buckling manner.
Through the technical scheme, the user can select different supporting seats more, and the chair supporting frame is stable and anti-skidding.
To sum up, the utility model discloses following beneficial effect has:
1. through setting up the back subassembly, and back coupling assembling includes a Y type connecting piece, both sides respectively are equipped with a U type hole about the Y type connecting piece, Y type connecting piece lower extreme fixed connection connecting rod, the vertical fixing on a fixed block of connecting rod lower extreme, the fixed block is fixed in seat subassembly one side, the back subassembly is including controlling two backs, be equipped with the screw on the back, use the screw thread fixed connection that sets up on the U type hole that sets up on the Y type connecting piece and the two backs of controlling respectively, this kind of connected mode can let the back can adjust outside flexible, and adjust the height from top to bottom slightly the back.
2. Through set up a horizontal screw on through hole and pore wall on the fixed block, and set up a plurality of longitudinal arrangement's regulation hole in connecting rod lower extreme both sides to also set up corresponding through-hole on the axle sleeve, rotatory bolt passes in proper order screw, through-hole, connecting hole, with connecting rod, axle sleeve, fixed block further fixed, this kind of connected mode can be more convenient regulation back height
3. The supporting seat assembly is a five-star foot or an I-shaped frame, so that different supporting seats can be provided for different users.
Drawings
FIG. 1 is a perspective view;
FIG. 2 is an exploded view;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is an enlarged view of B in FIG. 2; FIG. 5 is a perspective view of the bushing;
in the drawings, 1, a backrest assembly; 11. a backrest; 111. a screw hole; 12. a strip-shaped connecting block; 121. a through hole; 122. a screw hole; 123. a screw; 2. a backrest connection assembly; 21. a Y-shaped connector; 211. a U-shaped hole; 212. rotating the bolt; 22. a connecting rod; 221. a through hole; 222. an adjustment hole; 23. a fixed block; 231. a through hole; 232. a through hole; 233. a screw hole; 24. rotating the bolt; 25. a shaft sleeve; 251. sleeving edges; 252. a sleeve body; 253. a through hole; 254. a U-shaped groove; 255. a rib; 256. a through hole; 3. a seat plate assembly; 4. a support base assembly; 41. a tray; 411. connecting sheets; 42. five-star feet; 43. a roller; 44. and (4) an air rod.
Detailed Description
The present invention will be further explained with reference to the attached drawings.
As shown in fig. 1, a chair with an adjustable backrest comprises a backrest assembly 1, a backrest connecting assembly 2 with one end fixedly connected with the backrest assembly 1, a seat plate assembly 3 with the other end fixedly connected with the backrest assembly 1, and a supporting seat assembly 4 fixed below the seat plate assembly 3.
As shown in fig. 2 and 3, the backrest assembly 1 includes two left and right backrests 11, two upper and lower screw holes 111 are respectively provided on the backrest 11, and further includes two left and right bar-shaped connecting blocks 12, two ends of each bar-shaped connecting block 12 are respectively provided with a through hole 121, the distance between the two through holes 121 is the same as that between the two screw holes on the backrest 11, the bar-shaped connecting block 12 penetrates through the through hole 121 and is fixedly connected with the screw holes 111 by a screw 123, and a screw hole 122 is further provided between the two through holes 121 of the bar-shaped connecting block 12.
As shown in fig. 2, the backrest connecting unit 2 includes a Y-shaped connecting member 21, a connecting rod 22, a fixing block 23 and a rotating bolt.
As shown in FIG. 3, the left and right side ends of the Y-shaped connecting member 21 are respectively provided with a U-shaped hole 211, and a rotary bolt 212 is respectively threaded through the U-shaped hole 211 and the screw hole 122 on the bar-shaped connecting block 12 of the backrest 11 for fixed connection. The lower extreme of Y type connecting piece 21 is equipped with a mounting groove (not shown), and the upper end and the mounting groove (not shown) interference fit of connecting rod 22 are connected, the upper end of connecting rod 22 is equipped with through-hole 221, and Y type connecting piece 21 lower extreme mounting groove (not shown) is equipped with the screw, screw and through-hole 221 cooperation bolt fixed connection.
As shown in fig. 2 and 4, the fixing block 23 has a through hole 231, the lower end of the connecting rod 22 is sleeved with a shaft sleeve 25 and is connected with the shaft sleeve in an interference fit manner, the lower end of the connecting rod 22 passes through the through hole 231, and the connecting rod 22 and the shaft sleeve 25 sleeved on the connecting rod 22 are connected with the through hole 231 of the fixing block 23 in an interference fit manner.
As shown in fig. 2 and 4, two screw holes (not shown) are formed in the bottom surface of the seat plate assembly 3 near the connecting rod 22, two through holes 232 are respectively formed in two sides of the fixing block 23 far away from the connecting rod 22, and a bolt is screwed through the through holes 232 and the screw holes in the bottom surface of the seat plate assembly 3, so that the fixing block 23 is fixed to the bottom surface of the seat plate assembly 3.
As shown in fig. 5, the shaft sleeve 25 includes a sleeve edge 251 and a sleeve body 252, the sleeve edge 251 is larger than the sleeve body 252 in size, the shaft sleeve 25 further has a longitudinal through hole 253, the sleeve body 252 is provided with a plurality of longitudinal U-shaped grooves 254, and the lower ends of the two sides of the sleeve body 252 are further provided with ribs 255.
As shown in fig. 4 and 5, the shaft sleeve 25 is sleeved on the lower end of the connecting rod 22 and passes through the through hole 231 of the fixing block 23, and in the passing process, because the sleeve body 252 is provided with a plurality of longitudinal U-shaped grooves, the sleeve body 252 provided with the convex rib 255 is pressed inwards to clasp the connecting rod 22 under the action of the convex rib 255, so that the interference fit effect is achieved. The sleeve edge 251 can play a limiting role.
As shown in fig. 4, a plurality of adjusting holes 222 are longitudinally arranged on both sides of the lower end of the connecting rod 22, a through hole 251 is also arranged on the corresponding both sides of the shaft sleeve 25, a screw hole 233 is arranged on both sides of the hole wall of the through hole 231 of the fixing block 23, and the screw hole 233, the through hole 251 and the adjusting holes 222 are fixedly connected by a rotating bolt 24 passing through the screw hole 233, the through hole 251 and the adjusting holes 222 in sequence. According to different heights of users, the adjusting holes 222 with different heights on the connecting rod 22 can be selected to be fixedly connected.
As shown in fig. 2, the supporting seat assembly 4 includes a tray 41, a five-star leg 42, a set of casters 43 and a gas rod 44, wherein five casters 43 are respectively fixedly installed at each end of the five-star leg 42, a through hole (not shown) is formed in the middle of the five-star leg 42, one end of the gas rod 44 is vertically inserted into the through hole (not shown) and is connected with the through hole in an interference fit manner, the other end of the gas rod 44 is fixedly connected with the tray 41 in a fit manner,
as shown in fig. 2, the tray 41 is provided with four connecting members 411, one end of each connecting member 411 is fixedly connected to the upper surface of the tray 41, and the other end is provided with a through hole (not shown). The bottom surface of the seat plate component 3 is provided with 4 corresponding screw holes (not shown), and the tray 41 and the seat plate component 3 are fixedly connected with the screw holes by bolts penetrating through the through holes.
The supporting seat assembly 4 can also be fixedly connected with the bottom of the seat plate assembly 3 through bolts by using an I-shaped frame.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be understood that any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a chair with adjustable back, includes back subassembly, one end and back subassembly fixed connection's back coupling assembling, with back subassembly's other end fixed connection's seat subassembly to and fix the support seat subassembly in seat subassembly below, its characterized in that: backrest coupling assembling include a Y type connecting piece, both sides respectively are equipped with a U type hole about the Y type connecting piece, Y type connecting piece lower extreme fixed connection connecting rod, the vertical fixing of connecting rod lower extreme is on a fixed block, the fixed block is fixed in seat subassembly one side, the backrest subassembly including controlling two backs, be equipped with the screw on the back, use rotatory bolt to pass respectively the U type hole that sets up on the Y type connecting piece with control two backs on the screw thread fixed connection that set up.
2. A chair with adjustable backrest as claimed in claim 1, wherein: and the left backrest and the right backrest are respectively fixedly provided with a bar-shaped connecting block, the bar-shaped connecting blocks are provided with screw holes, and rotating bolts penetrate through the U-shaped holes and are fixedly connected with the screw holes through threads.
3. A chair with adjustable backrest as claimed in claim 2, wherein: the Y-shaped connecting piece lower extreme be equipped with a vertical mounting groove, the connecting rod upper end is connected with mounting groove interference fit.
4. A chair with adjustable backrest as claimed in claim 3, wherein: the mounting groove of Y type connecting piece lower extreme is equipped with horizontal through screw, with the one end of the connecting rod that mounting groove interference fit is connected also is equipped with the through-hole, uses the bolt to pass screw and through-hole and screw thread fixed connection respectively.
5. A chair with adjustable back rest according to any one of claims 1-4, wherein: the connecting rod lower extreme still the cover establish a axle sleeve, the axle sleeve include a cover body, set up the cover edge of cover body upper end still is provided with a plurality of fore-and-aft U type grooves on the cover body, the cover body lower extreme outside is provided with the fin, the fixed block is equipped with a vertical through hole, the connecting rod lower extreme cover is established pass behind the axle sleeve the through hole, interference fit connects fixedly.
6. A chair with adjustable back rest according to claim 5, wherein: the connecting rod, the shaft sleeve and the fixed block sequentially penetrate through a rotating bolt, and the screw hole, the through hole and the connecting hole are further fixed.
7. A chair with adjustable backrest as claimed in claim 6, wherein: the supporting seat assembly comprises a five-star foot and a roller which is connected with the five-star foot in a matched mode, an air rod which is vertically fixed at the center of the five-star foot and a tray which is connected with the upper portion of the air rod in a matched mode, and the tray is fixedly installed at the bottom of the seat plate assembly.
8. A chair with adjustable backrest as claimed in claim 6, wherein: the supporting seat component is an I-shaped frame, and the upper surface of the I-shaped frame is fixedly arranged at the bottom of the seat plate component.
9. A chair with adjustable backrest as claimed in claim 8, wherein: the supporting part of the I-shaped frame contacting with the ground is also provided with a foot pad, and the foot pad is connected with the I-shaped frame in a buckling manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922151908.3U CN211269534U (en) | 2019-12-05 | 2019-12-05 | Chair with adjustable backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922151908.3U CN211269534U (en) | 2019-12-05 | 2019-12-05 | Chair with adjustable backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211269534U true CN211269534U (en) | 2020-08-18 |
Family
ID=72032168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922151908.3U Expired - Fee Related CN211269534U (en) | 2019-12-05 | 2019-12-05 | Chair with adjustable backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211269534U (en) |
-
2019
- 2019-12-05 CN CN201922151908.3U patent/CN211269534U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 Termination date: 20211205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |