CN211092854U - Seat with backrest tilting stepless adjusting structure - Google Patents
Seat with backrest tilting stepless adjusting structure Download PDFInfo
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- CN211092854U CN211092854U CN201922049241.6U CN201922049241U CN211092854U CN 211092854 U CN211092854 U CN 211092854U CN 201922049241 U CN201922049241 U CN 201922049241U CN 211092854 U CN211092854 U CN 211092854U
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Abstract
The utility model relates to a chair with a backrest inclination stepless adjustment structure, which comprises a seat frame and a backrest, wherein the seat frame comprises an upper seat frame and a lower seat frame which are connected in a sliding way, an elastic reset device is arranged between the upper seat frame and the lower seat frame, extension parts are arranged on two sides of the lower seat frame, the backrest is hinged with the upper seat frame through a hinged shaft A and is hinged with the extension parts through a hinged shaft B, and the hinged shaft B is higher than the hinged shaft A; the stepless adjusting structure comprises an upper adjusting seat and a lower adjusting seat, the front part of the upper adjusting seat is connected with the lower seat frame in a sliding way, the rear part of the upper adjusting seat is connected with the upper seat frame, and the lower adjusting seat is connected with the lower seat frame; the lower surface of the upper adjusting seat is distributed with an upper tooth surface, the upper surface of the lower adjusting seat is distributed with a lower tooth surface, and the side of the lower adjusting seat is connected with a sliding plate; the pitch of the upper tooth surface and the pitch of the lower tooth surface are 0.8-1.2 mm. Compared with the prior art, the utility model discloses the back of the seat inclines and faces upward angle does not have the gear restriction, does not have the pause and contuse and feels, and the travelling comfort is good, and the operation is convenient, is difficult for rubbing the back with the hands.
Description
Technical Field
The utility model relates to the technical field of furniture, in particular to seat with back inclinations infinitely variable control structure.
Background
In the existing market, the inclination and elevation adjustment of the backrest of the seat is basically realized through a chassis, but the existing chassis is basically adjusted through gears and cannot be subjected to stepless adjustment, so that the defects of strong stop feeling, poor comfort, complex operation and the like exist, and the weight of the seat can be greatly increased and the transportation cost can be increased by realizing the inclination and the elevation of the backrest through the chassis; in addition, when the backrest of the existing chassis tilts upwards, the synchronous movement of the seat part cannot be realized, and the back rubbing feeling is easy to generate.
In order to solve the technical problem, the utility model provides a seat with back infinitely variable control structure of inclining upward inclines upward, inclines upward the angle and does not have the gear restriction, does not have the pause and contuse and feels, has strengthened the level and smooth nature when the back inclines upward, and the travelling comfort is good, and the operation is convenient, is difficult for rubbing with the hands the back simultaneously.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes exist not enough among the above-mentioned prior art, provided a seat with back infinitely variable control structure that inclines, the angle of inclining does not have the gear restriction, does not have the pause and frustrates and feels, has strengthened the level and smooth nature when the back inclines and faces upward, and the travelling comfort is good, and the operation is convenient, is difficult for rubbing the back with the hands simultaneously.
The technical scheme of the utility model is realized like this:
a seat with a backrest tilting stepless adjusting structure comprises a seat frame and a backrest, wherein the seat frame comprises an upper seat frame and a lower seat frame which are connected in a sliding manner, an elastic reset device is connected between the upper seat frame and the lower seat frame, extending parts are arranged on two sides of the lower seat frame, the backrest is hinged with the upper seat frame through a hinged shaft A and hinged with the extending parts through a hinged shaft B, and the hinged shaft B is higher than the hinged shaft A; a stepless adjusting structure is connected between the upper seat frame and the lower seat frame and comprises an upper adjusting seat and a lower adjusting seat, the front part of the upper adjusting seat is connected with the lower seat frame in a sliding manner, the rear part of the upper adjusting seat is connected with the upper seat frame, and the lower adjusting seat is connected with the lower seat frame; the lower surface of the upper adjusting seat is provided with an upper tooth surface, the upper surface of the lower adjusting seat is provided with a lower tooth surface which can be meshed with the upper tooth surface, and the side of the lower adjusting seat is connected with a sliding plate which is used for realizing the meshing or separation of the lower tooth surface and the upper tooth surface; wherein the pitch of the upper tooth surface and the pitch of the lower tooth surface are 0.8-1.2 mm.
In the utility model, the lower tooth surface is separated from the upper tooth surface by the sliding plate, the inclination angle of the backrest can be adjusted at the moment, namely, the backrest is unlocked, particularly, when the backrest is subjected to backward acting force, the backrest (under the action of the hinged pulling A and the hinged pulling B) pushes the upward and forward displacement of the upper seat frame, when the user adjusts the backrest to a proper inclination angle, the lower tooth surface is meshed with the upper tooth surface by the sliding plate, the inclination angle of the backrest can not be adjusted at the moment, namely, the locking of the inclination angle of the backrest is realized; on the contrary, if the inclination angle needs to be reduced, firstly, the lower tooth surface is separated from the upper tooth surface by sliding the sliding plate, the backward acting force applied to the backrest is reduced or eliminated, the upper seat frame and the backrest tilt forwards under the reset action of the elastic reset device, and when the backrest is adjusted to the proper inclination angle by a user, the lower tooth surface is meshed with the upper tooth surface by sliding the sliding plate, so that the locking can be realized; the pitch of the upper tooth surface and the pitch of the lower tooth surface are 0.8-1.2 mm and are very fine, so that the locking at a small enough distance can be realized, namely the locking is equivalent to stepless locking; the backrest has the advantages that the inclination angle is not limited by gears, no pause feeling is caused, the smoothness of the backrest in inclination is enhanced, the comfort is good, the operation is convenient, and the backrest is not easy to rub.
Preferably, the rear part of the upper seat frame is connected with a waist-shaped groove, and a shaft lever is arranged between the rear end of the upper adjusting seat and the waist-shaped groove in a penetrating mode.
When last seat frame displacement, waist type groove slides along the axostylus axostyle, can restrict the stroke of seat frame displacement on the one hand, and stability when on the other hand can guarantee the displacement of seat frame is difficult for taking place the skew.
Preferably, the lower seat frame is fixedly connected with a fixed seat, the fixed seat comprises an upper sliding groove for sliding the front part of the upper adjusting seat and a lower sliding groove for sliding the sliding plate, and the upper sliding groove and the lower sliding groove are vertically distributed.
Preferably, the sliding plate is provided with a pulling groove, a torsion spring is arranged beside the sliding plate, one end of the torsion spring is inserted into the pulling groove, when the other end of the torsion spring is pulled, one end of the torsion spring inserted into the pulling groove can pull the pulling groove to enable the sliding plate to drive the lower tooth surface to slide out of the upper tooth surface, so that unlocking is achieved, when the torsion spring is loosened, one end of the torsion spring inserted into the pulling groove can pull back the pulling groove to enable the sliding plate to drive the lower tooth surface to be meshed with the upper tooth surface, and locking is achieved.
Preferably, the lower sliding groove is fixedly connected with a fixing plate, the fixing plate is provided with a first limiting long groove, the fixing plate is further fixedly connected with a connecting shaft, the torsion spring is connected to the connecting shaft, and one end of the torsion spring is sequentially inserted into the first limiting long groove and the pulling groove.
The arrangement of the first limiting long groove limits the sliding stroke of the sliding plate, improves the locking and unlocking efficiency, enhances the judgment of unlocking, and realizes unlocking as long as the sliding plate can not be pulled any more after being pulled out.
Preferably, the other end of the torsion spring is connected with a wire control handle.
The sliding of the sliding plate can be realized by pulling the wire-controlled handle, namely, the upper tooth surface and the lower tooth surface are meshed or separated, and the operation is simple and convenient.
Preferably, the surface of the upper tooth surface and the surface of the lower tooth surface are both inclined, wherein the surface of the upper tooth surface is inclined towards the sliding direction of the lower tooth surface.
The lower tooth surface can conveniently slide in and out of the upper tooth surface, the efficiency is higher, and the conditions of collision, sliding and the like are not easy to occur.
Preferably, a second limiting long groove is formed in the side wall of the extending part, and one end of the hinge shaft A is placed in the second limiting long groove and can slide along the second limiting long groove.
The second limiting long groove can simultaneously limit the inclination angle of the backrest and the displacement stroke of the seat frame; the second limiting long groove has a certain radian.
Preferably, the hinge shaft a and the hinge shaft B are respectively connected to both ends of a reinforcing rod, and the reinforcing rod is fixedly connected to the backrest.
The connection strength is increased, and the service life is prolonged.
Preferably, the extension is a grab bar.
Adopted above-mentioned technical scheme the beneficial effects of the utility model are that:
the utility model provides a seat with back infinitely variable control structure of inclining upward inclines upward, and the angle of inclining upward does not have the gear restriction, and no pause or pause is contused and is felt, has strengthened the level and smooth nature when the back inclines upward, and the travelling comfort is good, and easy operation, is difficult for rubbing the back with the hands simultaneously. In the utility model, the lower tooth surface is separated from the upper tooth surface by the sliding plate, the inclination angle of the backrest can be adjusted at the moment, namely, the backrest is unlocked, particularly, when the backrest is subjected to backward acting force, the backrest (under the action of the hinged pulling A and the hinged pulling B) pushes the upward and forward displacement of the upper seat frame, when the user adjusts the backrest to a proper inclination angle, the lower tooth surface is meshed with the upper tooth surface by the sliding plate, the inclination angle of the backrest can not be adjusted at the moment, namely, the locking of the inclination angle of the backrest is realized; on the contrary, if the inclination angle needs to be reduced, firstly, the lower tooth surface is separated from the upper tooth surface by sliding the sliding plate, the backward acting force applied to the backrest is reduced or eliminated, the upper seat frame and the backrest tilt forwards under the reset action of the elastic reset device, and when the backrest is adjusted to the proper inclination angle by a user, the lower tooth surface is meshed with the upper tooth surface by sliding the sliding plate, so that the locking can be realized; the pitch of the upper tooth surface and the pitch of the lower tooth surface are 0.8-1.2 mm and are very fine, so that the locking at a small enough distance can be realized, namely the locking is equivalent to stepless locking; the backrest has the advantages that the inclination angle is not limited by gears, no pause feeling is caused, the smoothness of the backrest in inclination is enhanced, the comfort is good, the operation is convenient, and the backrest is not easy to rub.
Drawings
FIG. 1 is a schematic view showing the overall structure of a seat according to an embodiment;
FIG. 2 is a schematic illustration of an exploded view of an example seat;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is another schematic exploded view of the example seat;
FIG. 5 is an enlarged view of the portion B in FIG. 4;
FIG. 6 is an exploded view of an embodiment of the infinitely variable adjustment mechanism;
FIG. 7 is a schematic structural view illustrating a locking state of an embodiment of a stepless adjustment structure;
FIG. 8 is a schematic top view of the structure of FIG. 7;
FIG. 9 is a schematic side view of the structure of FIG. 7;
FIG. 10 is a schematic view of an unlocked state of the stepless adjustment structure of the embodiment;
FIG. 11 is a schematic top view of the structure of FIG. 10;
FIG. 12 is a schematic side view of the structure of FIG. 10;
reference numerals:
the seat frame 100, the upper seat frame 110, the waist-shaped groove 111, the shaft rod 1111, the lower seat frame 120, the grab bar 121, the second limit long groove 1211, the connecting plate 130, the backrest 200, the reinforcing rod 300, the upper adjusting seat 400, the upper tooth surface 410, the lower adjusting seat 500, the lower tooth surface 510, the sliding plate 600, the pulling groove 610, the fixed seat 700, the upper sliding groove 710, the lower sliding groove 720, the fixed plate 721, the first limit long groove 7211, the groove 7221, the torsion spring 800, the wire-controlled pull handle 900 and the connecting shaft 1000.
Detailed Description
The specific implementation manner of the utility model is as follows:
example (b):
a seat with a backrest tilting stepless adjustment structure, as shown in fig. 1-12, comprising a seat frame 100 and a backrest 200, wherein the seat frame 100 comprises an upper seat frame 110 and a lower seat frame 120 which are connected in a sliding manner (specifically, a connecting plate 130 is connected to the lower part of the upper seat frame 110, sliding grooves (not shown) which are connected with the lower seat frame 120 in a sliding manner are formed on the left and right side parts of the connecting plate 130), and a return compression spring (not shown) is connected between the upper seat frame 110 and the lower seat frame 120; wherein, the two sides of the lower seat frame 120 are provided with extension parts (specifically, handrail rods 121), the backrest 200 is hinged with the upper seat frame 110 through a hinge shaft A and is hinged with the extension parts through a hinge shaft B, wherein the hinge shaft B is higher than the hinge shaft A, the hinge shaft A and the hinge shaft B are respectively connected with two ends of a reinforcing rod 300, the reinforcing rod 300 is injected on the backrest 200, the side wall of the extension part is provided with a second limiting long groove 1211 with a certain radian, and one end of the hinge shaft A is arranged in the second limiting long groove 1211 and can slide along the second limiting long groove 1211; a stepless adjusting structure is connected between the upper seat frame 110 and the lower seat frame 120.
Specifically, the stepless adjusting structure comprises an upper adjusting seat 400 and a lower adjusting seat 500, the front part of the upper adjusting seat 400 is connected with the lower seat frame 120 in a sliding manner, the rear part of the upper adjusting seat 400 is connected with the upper seat frame 110 (specifically, the rear part of the upper seat frame 110 is connected with a waist-shaped groove 111, a shaft 1111 penetrates between the rear end of the upper adjusting seat 400 and the waist-shaped groove 111), and the lower adjusting seat 500 is connected with the lower seat frame 120; the lower surface of the upper adjusting seat 400 is distributed with an upper tooth surface 410, the upper surface of the lower adjusting seat 500 is provided with a lower tooth surface 510 which can be engaged with the upper tooth surface 410, a sliding plate 600 which is used for realizing the engagement or separation of the lower tooth surface 510 and the upper tooth surface 410 is connected to the side of the lower adjusting seat 500, the surface where the upper tooth surface 410 is located and the surface where the lower tooth surface 510 is located are both obliquely arranged, wherein the surface where the upper tooth surface 410 is located is obliquely oriented to the sliding direction of the lower tooth surface 510; wherein the pitch of upper tooth surface 410 and the pitch of lower tooth surface 510 are both 1 mm.
Further, the lower seat frame 120 is fixedly connected with a fixed seat 700, the fixed seat 700 includes an upper sliding groove 710 for sliding with the front portion of the upper adjusting seat 400 and a lower sliding groove 720 for sliding with the sliding plate 600, and the upper sliding groove 710 and the lower sliding groove 720 are vertically distributed; the surface of the upper sliding groove 710 contacting with the sliding plate 600 is provided with a groove 7221 in the same sliding direction as the sliding plate 600, so that the friction force of the sliding plate 600 during sliding can be reduced, the sliding is smoother, the efficiency is high, the weight of the fixing seat 700 is reduced, and the fixing seat is more portable.
The lower sliding groove 720 is fixedly connected with a fixing plate 721, the fixing plate 721 is provided with a first limiting long groove 7211, the fixing plate 721 is also vertically and fixedly connected with a connecting shaft 1000, the connecting shaft 1000 is connected with a torsion spring 800, the sliding plate 600 is provided with a pulling groove 610, one end of the torsion spring 800 is sequentially inserted into the first limiting long groove 7211 and the pulling groove 610, the other end of the torsion spring 800 is connected with a wire control handle 900, when the wire control handle 900 is pulled, one end of the torsion spring 800 inserted into the pulling groove 610 pulls the pulling groove 610, so that the sliding plate 600 drives the lower tooth surface 510 to slide out of the upper tooth surface 410, unlocking is realized, when the wire control handle 900 is loosened, one end of the torsion spring 800 inserted into the pulling groove 610 pulls the pulling groove 610 back, so that the sliding plate 600 drives the lower tooth surface 510 to be meshed.
When the backrest 200 is adjusted to recline backwards, the lower tooth surface 510 is separated from the upper tooth surface 410 by sliding the sliding plate 600, and at this time, the reclining angle of the backrest 200 can be adjusted, i.e., unlocked, specifically, when the backrest 200 is subjected to a backward acting force, the backrest 200 (under the action of the hinged drawer a and the hinged drawer B) pushes the upper seat frame 110 to move forwards and upwards, when the user adjusts the backrest 200 to a proper reclining angle, the lower tooth surface 510 is engaged with the upper tooth surface 410 by sliding the sliding plate 600, and at this time, the reclining angle of the backrest 200 cannot be adjusted, i.e., the reclining angle of the backrest 200 is locked; when the backrest 200 is adjusted to tilt forward, the lower tooth surface 510 is separated from the upper tooth surface 410 by sliding the sliding plate 600, the backward acting force applied to the backrest 200 is reduced or eliminated, the upper seat frame 110 and the backrest 200 tilt forward under the reset action of the reset pressure spring, and when the user adjusts the backrest 200 to a proper tilting angle, the lower tooth surface 510 is engaged with the upper tooth surface 410 by sliding the sliding plate 600, so that locking can be realized.
The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a seat with back infinitely variable control structure of leaning on, includes seat frame, back, its characterized in that: the seat frame comprises an upper seat frame and a lower seat frame which are connected in a sliding manner, an elastic reset device is connected between the upper seat frame and the lower seat frame, extending parts are arranged on two sides of the lower seat frame, the backrest is hinged with the upper seat frame through a hinge shaft A and is hinged with the extending parts through a hinge shaft B, and the hinge shaft B is higher than the hinge shaft A; a stepless adjusting structure is connected between the upper seat frame and the lower seat frame and comprises an upper adjusting seat and a lower adjusting seat, the front part of the upper adjusting seat is connected with the lower seat frame in a sliding manner, the rear part of the upper adjusting seat is connected with the upper seat frame, and the lower adjusting seat is connected with the lower seat frame; the lower surface of the upper adjusting seat is provided with an upper tooth surface, the upper surface of the lower adjusting seat is provided with a lower tooth surface which can be meshed with the upper tooth surface, and the side of the lower adjusting seat is connected with a sliding plate which is used for realizing the meshing or separation of the lower tooth surface and the upper tooth surface; wherein the pitch of the upper tooth surface and the pitch of the lower tooth surface are 0.8-1.2 mm.
2. A seat having a backrest recline stepless adjustment structure as claimed in claim 1, wherein: the rear part of the upper seat frame is connected with a waist-shaped groove, and a shaft lever is arranged between the rear end of the upper adjusting seat and the waist-shaped groove in a penetrating mode.
3. A seat having a backrest recline stepless adjustment structure as claimed in claim 1, wherein: the upper seat frame is fixedly connected with a fixed seat, the fixed seat comprises an upper sliding groove and a lower sliding groove, the upper sliding groove is used for sliding the front part of the upper adjusting seat, the lower sliding groove is used for sliding the sliding plate, and the upper sliding groove and the lower sliding groove are vertically distributed.
4. A seat having a backrest recline stepless adjustment structure as claimed in claim 3, wherein: the sliding plate is provided with a pulling groove, a torsion spring is arranged beside the sliding plate, one end of the torsion spring is inserted into the pulling groove, when the other end of the torsion spring is pulled, one end of the torsion spring inserted into the pulling groove can pull the pulling groove, so that the sliding plate drives the lower tooth surface to slide out of the upper tooth surface, unlocking is realized, when the torsion spring is loosened, one end of the torsion spring inserted into the pulling groove can pull back the pulling groove, and the sliding plate drives the lower tooth surface to be meshed with the upper tooth surface, so that locking is realized.
5. A seat having a backrest recline stepless adjustment structure as claimed in claim 4, wherein: the lower sliding groove is fixedly connected with a fixing plate, a first limiting long groove is formed in the fixing plate, a connecting shaft is further fixedly connected to the fixing plate, the torsion spring is connected to the connecting shaft, and one end of the torsion spring is sequentially inserted into the first limiting long groove and the pulling groove.
6. A seat having a backrest recline stepless adjustment structure as claimed in claim 4, wherein: the other end of the torsion spring is connected with a drive-by-wire handle.
7. A seat having a backrest recline stepless adjustment structure as claimed in claim 1, wherein: the surface where the upper tooth surface is located and the surface where the lower tooth surface is located are both obliquely arranged, wherein the surface where the upper tooth surface is located is obliquely oriented to the sliding direction of the lower tooth surface.
8. A seat having a backrest recline stepless adjustment structure as claimed in claim 1, wherein: a second limiting long groove is formed in the side wall of the extending part, and one end of the hinge shaft A is arranged in the second limiting long groove and can slide along the second limiting long groove.
9. A seat having a backrest recline stepless adjustment structure as claimed in claim 1, wherein: the articulated shaft A and the articulated shaft B are respectively connected with two ends of a reinforcing rod, and the reinforcing rod is fixedly connected with the backrest.
10. A seat having a backrest recline stepless adjustment structure as claimed in claim 1, wherein: the extension part is a grab rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922049241.6U CN211092854U (en) | 2019-11-22 | 2019-11-22 | Seat with backrest tilting stepless adjusting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922049241.6U CN211092854U (en) | 2019-11-22 | 2019-11-22 | Seat with backrest tilting stepless adjusting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211092854U true CN211092854U (en) | 2020-07-28 |
Family
ID=71687716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922049241.6U Active CN211092854U (en) | 2019-11-22 | 2019-11-22 | Seat with backrest tilting stepless adjusting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211092854U (en) |
-
2019
- 2019-11-22 CN CN201922049241.6U patent/CN211092854U/en active Active
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