CN209789184U - Sofa with self-adjusting backrest - Google Patents
Sofa with self-adjusting backrest Download PDFInfo
- Publication number
- CN209789184U CN209789184U CN201822142183.7U CN201822142183U CN209789184U CN 209789184 U CN209789184 U CN 209789184U CN 201822142183 U CN201822142183 U CN 201822142183U CN 209789184 U CN209789184 U CN 209789184U
- Authority
- CN
- China
- Prior art keywords
- ring
- backrest
- rotating shaft
- pressure regulating
- connecting rod
- Prior art date
- 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
Links
Abstract
The utility model discloses a backrest self-adjusting sofa, belonging to the field of furniture seats and aiming at automatically adjusting the proper backrest angle, which has the key points of the technical proposal that handrails are respectively arranged at the two ends of a base, the base is provided with a backrest positioned between the handrails, a rotating shaft is fixedly arranged on the backrest, and the two ends of the rotating shaft are respectively rotationally connected with the handrails; a connecting rod is fixed on the rotating shaft, an arc-shaped rod taking the rotating shaft as an axis is fixed on the connecting rod, a pressure spring is sleeved on the arc-shaped rod, and a pressure regulating ring sleeved on the arc-shaped rod is pressed at one end, far away from the connecting rod, of the pressure spring; the pressure regulating ring is detachably connected with a fixing ring fixed on the handrail. The utility model provides a when carrying out the adjustment of back, awkward problem.
Description
Technical Field
The utility model relates to a furniture seat field, in particular to sofa with self-adjusting backrest.
Background
The sofa is a backrest chair provided with springs or thick foam plastics, and the two sides of the sofa are provided with armrests, so that the sofa is soft-packed furniture.
The sofa is widely placed in living rooms, offices and meeting rooms, has various styles and comprises a functional sofa, a fixed back sofa, an electrodeless self-control sofa, a pneumatic sofa, an electric sofa, a sofa with a television and the like.
With the development of science and technology and the improvement of manufacturing processes, people continuously pursue high-quality living experiences, and particularly in the field of furniture, the requirement of people on the comfort level of the sofa is not limited to the function of sitting and leaning.
The patent of chinese utility model with the publication number of CN201243819Y discloses a novel sofa, which comprises a base, armrests and a backrest, wherein the backrest is fixed on one side of the base, the armrests are fixed on two ends of the base, and at least one movable backrest is movably arranged on the backrest through a folding supporting mechanism.
Above-mentioned scheme is convenient for adjust the back position, satisfies the individual demand of different heights and size, but when the individual adjustment of carrying out the back, operating time is longer, is not convenient for adjust out suitable back angle.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sofa with a self-adjusting backrest, which has the advantage of automatically adjusting the proper backrest angle.
The above technical purpose of the present invention can be achieved by the following technical solutions: a sofa with a self-adjusting backrest comprises a base, wherein armrests are arranged at two ends of the base respectively, a backrest positioned between the armrests is arranged on the base, a rotating shaft is fixedly arranged on the backrest, and two ends of the rotating shaft are rotatably connected with the armrests respectively; a connecting rod is fixed on the rotating shaft, an arc-shaped rod taking the rotating shaft as an axis is fixed on the connecting rod, a pressure spring is sleeved on the arc-shaped rod, and a pressure regulating ring sleeved on the arc-shaped rod is pressed at one end, far away from the connecting rod, of the pressure spring; the pressure regulating ring is detachably connected with a fixing ring fixed on the handrail, and the axis of the fixing ring coincides with the axis of the rotating shaft.
Through adopting above-mentioned technical scheme, remove and remove behind the pressure regulating ring to suitable position along the arc pole, with pressure regulating ring and solid fixed ring fixed connection, when the people leans on the back, the back drives the axis of rotation and rotates around its axis, the rotation of axis of rotation drives the arc pole through the connecting rod and revolutes the axis of rotation, when the arc pole rotates, the one end that the base was kept away from to the connecting rod reduces to the circumferential distance of pressure regulating ring gradually, connecting rod and pressure regulating ring further compress the pressure spring this moment, the reaction force is applyed to the connecting rod to the pressure spring, it revolutes the axis of rotation to hinder the connecting rod and rotates, it is balanced with the effort of human body to the back until the effort of pressure spring to.
The utility model discloses further set up to: the fixing ring is provided with a locking bolt which is arranged on the pressure regulating ring in a penetrating mode, and the locking bolt exerts an effect on the pressure regulating ring to enable the pressure regulating ring to abut against the fixing ring.
through adopting above-mentioned technical scheme, rotate lock bolt, make lock bolt's nut, pressure regulating ring and solid fixed ring support each other and press to realize being connected with dismantling of solid fixed ring in pressure regulating ring.
The utility model discloses further set up to: the fixed ring is detachably connected with the connecting rod.
Through adopting above-mentioned technical scheme, solid fixed ring can dismantle with the connecting rod and be connected, and the installation of solid fixed ring and connecting rod of being convenient for is convenient for change and maintain solid fixed ring and connecting rod simultaneously.
the utility model discloses further set up to: the terminal surface that the pressure spring was kept away from to the pressure regulating ring is equipped with the pressure regulating spring that the cover was located on the arc pole, the terminal surface that the pressure regulating spring kept away from the pressure regulating ring is contradicted and is equipped with the supplementary clamping ring that the cover was located the arc pole, supplementary clamping ring can be dismantled with solid fixed ring and be connected.
Through adopting above-mentioned technical scheme, when the crowd weight who uses this sofa changes, remove solid fixed ring and exchange the fixed of clamping ring position, with supplementary clamping ring and solid fixed ring fixed connection, make pressure regulating spring and pressure spring exert the effect to the axis of rotation jointly, when the back slope is the same angle, the back produces different effort to the human body.
the utility model discloses further set up to: the fixing ring is provided with an auxiliary bolt which is arranged on the auxiliary pressure ring in a penetrating mode, and the auxiliary bolt exerts an acting force on the auxiliary pressure ring to enable the auxiliary pressure ring to be abutted to the fixing ring.
Through adopting above-mentioned technical scheme, rotate auxiliary bolt and make auxiliary bolt's nut, supplementary clamping ring and solid fixed ring support and press to realize being connected with dismantling of solid fixed ring, connect convenient and fast supplementary pressure spring.
the utility model discloses further set up to: the backrest is provided with a protective cover for covering the backrest.
Through adopting above-mentioned technical scheme, the setting of guard shield can shield the back, the clearance maintenance of the back of being convenient for.
The utility model discloses further set up to: and the armrest is provided with a limiting mechanism for limiting the rotation range of the backrest.
Through adopting above-mentioned technical scheme, stop gear can restrict the rotation range of back, ensures the security of back use, prolongs the life of back simultaneously.
The utility model discloses further set up to: the limiting mechanism comprises a limiting block fixed on the rotating shaft, a limiting ring sleeved on the rotating shaft is fixedly arranged on the handrail, a limiting groove for accommodating the limiting block is formed in the inner side of the limiting ring, and the limiting block moves in the limiting groove.
through adopting above-mentioned technical scheme, when the axis of rotation rotated, the axis of rotation drove the stopper and rotates, and the stopper only can remove in the spacing inslot to the rotation range of restriction axis of rotation.
To sum up, the utility model discloses following beneficial effect has:
1. When a person leans on the backrest, the backrest drives the rotating shaft to rotate around the axis of the backrest, the rotating shaft rotates to drive the arc-shaped rod to rotate around the axis of the rotating shaft through the connecting rod, when the arc-shaped rod rotates, the circumferential distance from one end, away from the base, of the connecting rod to the pressure regulating ring is gradually reduced, the connecting rod and the pressure regulating ring further compress the pressure spring at the moment, the pressure spring exerts a reaction force on the connecting rod to prevent the connecting rod from rotating around the axis of the rotating shaft until the acting force of the pressure spring on the connecting rod is balanced with the acting force of the human body on the backrest, and therefore the angle of the backrest is automatically adjusted;
2. When the weight of a crowd using the sofa changes, the fixing of the fixing ring to the position of the pressure regulating ring is released, the auxiliary pressure ring is fixedly connected with the fixing ring, the pressure regulating spring and the pressure spring jointly exert an effect on the rotating shaft, and when the backrest inclines to the same angle, different acting forces are generated on the human body by the backrest.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1;
FIG. 2 is a schematic structural view of a backrest in embodiment 1;
FIG. 3 is an exploded view of the backrest in example 1;
FIG. 4 is an enlarged view at A in FIG. 3;
Fig. 5 is a schematic structural view of the pressure regulating mechanism in embodiment 1.
in the figure, 11, the base; 12. a handrail; 13. a backrest; 2. a rotating shaft; 21. a connecting rod; 22. an arcuate bar; 23. a pressure spring; 24. a voltage regulating ring; 3. a fixing ring; 31. locking the bolt; 32. connecting holes; 4. a pressure regulating mechanism; 41. a pressure regulating spring; 42. an auxiliary pressure ring; 43. an auxiliary bolt; 5. a limiting mechanism; 51. a limiting block; 52. a limiting ring; 521. a limiting groove; 6. a shield.
Detailed Description
the present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals.
Example 1
a sofa with self-adjusting backrest is disclosed, as shown in fig. 1 and fig. 2, comprising a base 11, armrests 12 are respectively arranged at two ends of the base 11, a backrest 13 positioned at one side of the base 11 is arranged between the two armrests 12, and a shield 6 for covering the backrest 13 is arranged at the outer side of the backrest 13.
As shown in fig. 3, a rotating shaft 2 is fixed on the backrest 13, two ends of the rotating shaft 2 are respectively located in the armrests 12 at two ends of the base 11, bearing seats are fixed in the armrests 12 by using screws, bearings sleeved on the rotating shaft 2 are arranged in the bearing seats, and the bearing seats and the bearings are not shown in the drawing.
As shown in fig. 3, a limit mechanism 5 is provided at one end of the rotating shaft 2.
As shown in fig. 4, the limiting mechanism 5 includes a limiting ring 52 fixed on the armrest 12, the limiting ring 52 is sleeved outside the rotating shaft 2, the inner diameter of the limiting ring 52 is equal to the outer diameter of the rotating shaft 2, a limiting groove 521 is formed in the limiting ring 52, the limiting groove 521 is an annular groove whose central line coincides with the central line of the limiting ring 52, and the limiting groove 521 is a semicircular ring. The outside welding of axis of rotation 2 has the stopper 51 that is located limiting groove 521, and when axis of rotation 2 rotated around self axis, stopper 51 removed in limiting groove 521.
As shown in fig. 5, a connecting rod 21 is inserted through one end of the side surface of the rotating shaft 2 facing away from the limiting mechanism 5, and the connecting rod 21 is rotatably inserted through the rotating shaft 2. The two ends of the connecting rod 21 are provided with arc-shaped rods 22, the center line of the circular ring where the arc-shaped rods 22 are located coincides with the center line of the rotating shaft 2, the arc-shaped rods 22 are provided with countersunk head screws which are arranged on the connecting rod 21 in a penetrating manner, the countersunk head screws are provided with two ends which are respectively arranged on the two ends of the connecting rod 21 in a rotating manner, and the countersunk head screws are not drawn in the attached drawings.
as shown in fig. 5, a pressure spring 23 is sleeved on the arc rod 22, one end of the pressure spring 23 abuts against the connecting rod 21, the other end of the pressure spring 23 abuts against a pressure regulating ring 24 sleeved on the arc rod 22, and a yielding hole for accommodating the arc rod 22 and having a cross-sectional area larger than that of the arc rod 22 is formed in the pressure regulating ring 24.
As shown in fig. 5, the fixing ring 3 is fixed to the base 11 by screws, the ring on which the fixing ring 3 is located takes the axis of the rotating shaft 2 as the axis, the fixing ring 3 is provided with a connecting hole 32 arranged along the circumferential direction of the fixing ring 3, and the connecting hole 32 penetrates through both ends of the fixing ring 3 in the radial direction of the rotating shaft 2. The locking bolt 31 located in the connecting hole 32 penetrates through the fixing ring 3, the locking bolt 31 penetrates through the fixing ring 3 and then is arranged on the pressure regulating ring 24 in a rotating mode, the locking bolt 31 is rotated until the nut of the locking bolt 31 is tightly pressed with the fixing ring 3, and the pressure regulating ring 24 and the fixing ring 3 are abutted to the surface of the rotating shaft 2 at the moment, so that the fixing of the pressure regulating ring 24 is achieved.
As shown in fig. 5, the fixing ring 3 is provided with a pressure regulating mechanism 4.
As shown in fig. 5, pressure regulating mechanism 4 includes that the cover locates pressure regulating spring 41 on curved pole 22, pressure regulating spring 41's elastic coefficient is greater than the elastic coefficient of pressure spring 23, pressure regulating spring 41's one end is contradicted in pressure regulating ring 24 and is kept away from the terminal surface of pressure spring 23, pressure regulating spring 41 keeps away from the one end of pressure regulating ring 24 and is contradicted and has supplementary clamping ring 42, offer on the supplementary clamping ring 42 and hold curved pole 22 and the cross-sectional area is greater than the hole of stepping down of curved pole 22 cross-sectional area, supplementary clamping ring 42 cover is located curved pole 22 and is slided along curved pole 22.
As shown in fig. 5, the fixing ring 3 is provided with an auxiliary bolt 43 passing through the connecting hole 32 and then being screwed onto the auxiliary pressing ring 42, the auxiliary bolt 43 is rotated to press the nut of the auxiliary bolt 43 against the fixing ring 3, and at this time, the auxiliary pressing ring 42 is pressed against the surface of the fixing ring 3 facing the rotating shaft 2, so that the position of the auxiliary pressing ring 42 is fixed.
A sofa with a self-adjusting backrest works as follows:
When the weight of the person who often uses the sofa is light, the auxiliary bolt 43 is loosened, the adjusting ring 24 is moved to the proper position along the arc-shaped rod 22, the locking bolt 31 is rotated to enable the locking bolt 31, the pressure regulating ring 24 and the fixing ring 3 to be pressed against each other, the pressure regulating ring 24 is fixed, when a person leans on the backrest 13, the backrest 13 drives the rotating shaft 2 to rotate around the axis of the rotating shaft 2, the rotating shaft 2 rotates to drive the arc rod 22 to rotate around the axis of the rotating shaft 2 through the connecting rod 21, when the arc rod 22 rotates, the circumferential distance from one end of the connecting rod 21 far away from the base 11 to the pressure regulating ring 24 is gradually reduced, at the moment, the connecting rod 21 and the pressure regulating ring 24 further compress the pressure spring 23, the pressure spring 23 applies a reaction force to the connecting rod 21 to prevent the connecting rod 21 from rotating around the axis of the rotating shaft 2, when the acting force of the pressure spring 23 on the backrest 13 is balanced with the acting force of the human body on the backrest 13, the automatic adjustment of the angle of the backrest 13 is realized;
When the weight of a person who often uses the sofa is light, the auxiliary pressure ring 42 is moved to a proper position, the auxiliary bolt 43 is rotated, the auxiliary bolt 43, the auxiliary pressure ring 42 and the fixing ring 3 are pressed against each other, the auxiliary pressure ring 42 is fixed, and the locking bolt 31 is unscrewed;
When a person leans on the backrest 13, the backrest 13 drives the rotating shaft 2 to rotate around the axis of the rotating shaft 2, the rotating shaft 2 rotates to drive the arc rod 22 to rotate around the axis of the rotating shaft 2 through the connecting rod 21, when the arc rod 22 rotates, the circumferential distance from one end, far away from the base 11, of the connecting rod 21 to the pressure regulating ring 24 is gradually reduced, at the moment, the connecting rod 21 exerts an action on the pressure spring 23, the pressure regulating ring 24 is pushed to move along the arc rod 22, the pressure regulating ring 24 exerts an action force on the pressure regulating spring 41, the pressure regulating spring 41 and the pressure spring 23 deform simultaneously, the opposite action forces generated by the pressure regulating spring 41 and the pressure spring 23 hinder the rotation of the rotating shaft 2, when the action force generated by the pressure regulating spring 41 and the pressure spring 23 on the backrest 13 is balanced with the action force generated by the human body on the;
When the rotating shaft 2 rotates, the rotating shaft 2 drives the limiting block 51 to rotate, and the limiting block 51 can only move in the limiting groove 521, so that the rotating range of the rotating shaft 2 is limited.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. the utility model provides a sofa with self-adjusting backrest, includes base (11), base (11) both ends are provided with handrail (12) respectively, be provided with on base (11) and be located back (13) between handrail (12), its characterized in that: a rotating shaft (2) is fixedly arranged on the backrest (13), and two ends of the rotating shaft (2) are respectively and rotatably connected with the armrests (12);
A connecting rod (21) is fixed on the rotating shaft (2), an arc-shaped rod (22) taking the rotating shaft (2) as an axis is fixed on the connecting rod (21), a pressure spring (23) is sleeved on the arc-shaped rod (22), and a pressure regulating ring (24) sleeved on the arc-shaped rod (22) is pressed against one end, far away from the connecting rod (21), of the pressure spring (23);
The pressure regulating ring (24) is detachably connected with a fixing ring (3) fixed on the handrail (12), and the axis of the fixing ring (3) coincides with the axis of the rotating shaft (2).
2. The backrest self-adjusting sofa of claim 1, wherein: the fixing ring (3) is provided with a locking bolt (31) which is arranged on the pressure regulating ring (24) in a rotating mode in a penetrating mode, and the locking bolt (31) exerts an effect on the pressure regulating ring (24) to enable the pressure regulating ring (24) to be abutted to the fixing ring (3).
3. The backrest self-adjusting sofa of claim 1, wherein: the fixing ring (3) is detachably connected with the connecting rod (21).
4. the backrest self-adjusting sofa of claim 1, wherein: the terminal surface that pressure regulating ring (24) kept away from pressure spring (23) is equipped with pressure regulating spring (41) that the cover was located on arc pole (22), the terminal surface conflict that pressure regulating spring (41) kept away from pressure regulating ring (24) is equipped with the supplementary clamping ring (42) that the cover was located arc pole (22), supplementary clamping ring (42) can be dismantled with solid fixed ring (3) and be connected.
5. The backrest self-adjusting sofa of claim 4, wherein: the fixing ring (3) is provided with an auxiliary bolt (43) which is arranged in the auxiliary pressure ring (42) in a rotating mode in a penetrating mode, and the auxiliary bolt (43) exerts an acting force on the auxiliary pressure ring (42) to enable the auxiliary pressure ring (42) to be abutted to the fixing ring (3).
6. The backrest self-adjusting sofa of claim 1, wherein: the backrest (13) is provided with a shield (6) for covering the backrest (13).
7. The backrest self-adjusting sofa of claim 1, wherein: and the armrest (12) is provided with a limiting mechanism (5) for limiting the rotation range of the backrest (13).
8. The backrest self-adjusting sofa of claim 7, wherein: the limiting mechanism (5) comprises a limiting block (51) fixed on the rotating shaft (2), a limiting ring (52) sleeved on the rotating shaft (2) is fixedly arranged on the handrail (12), a limiting groove (521) for accommodating the limiting block (51) is formed in the inner side of the limiting ring (52), and the limiting block (51) moves in the limiting groove (521).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142183.7U CN209789184U (en) | 2018-12-19 | 2018-12-19 | Sofa with self-adjusting backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822142183.7U CN209789184U (en) | 2018-12-19 | 2018-12-19 | Sofa with self-adjusting backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209789184U true CN209789184U (en) | 2019-12-17 |
Family
ID=68818343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822142183.7U Expired - Fee Related CN209789184U (en) | 2018-12-19 | 2018-12-19 | Sofa with self-adjusting backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209789184U (en) |
-
2018
- 2018-12-19 CN CN201822142183.7U patent/CN209789184U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102151021B (en) | Chair with backrest capable of moving forward and backward | |
| US6209958B1 (en) | Universal tilt mechanism for a chair | |
| JPS6241613A (en) | Chair | |
| CN209789184U (en) | Sofa with self-adjusting backrest | |
| EP2635159B1 (en) | Neck rest | |
| CN107397369B (en) | Seat tool | |
| CN111728408B (en) | Self-adaptive backrest seat | |
| CN209883545U (en) | Adjustable chair waist rest | |
| CN105795758A (en) | Single-rod double-control seat tray | |
| EP1912535B1 (en) | A chair or a bed having a seat, a backrest and an armrest as well as use thereof | |
| US11478083B1 (en) | Sofa backrest adjusting apparatus with integrated headrest and lumbar cushion | |
| CN110840139A (en) | Backrest locking device for office chair | |
| CN220876347U (en) | Chair with adjustable neck support | |
| CN219237231U (en) | But automatically regulated and high seat of comfort level | |
| CN219895147U (en) | Supporting angle adjusting structure of office chair backrest | |
| KR200292475Y1 (en) | chair having rotatable finger pressure and the front and the rear adjustable head support | |
| CN216417568U (en) | Bendable wheelchair backrest support rod connecting piece | |
| CN219699445U (en) | Office chair with adjustable headrest | |
| CN215776743U (en) | Seat with adjustable seat depth | |
| CN220157915U (en) | Office chair convenient for lying and rest | |
| CN220631610U (en) | Double-state applied furniture office chair | |
| CN215604379U (en) | Adjustable waist leans on structure | |
| CN211323972U (en) | Sofa with rotatable backrest | |
| JP2020058759A (en) | Chair | |
| CN216438859U (en) | Self-loading seat chassis and seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20211219 |