CN217488090U

CN217488090U - Chair with adjustable chair back height

Info

Publication number: CN217488090U
Application number: CN202221116365.7U
Authority: CN
Inventors: 罗焯明
Original assignee: Guangning Yingpin Zhizao Furniture Co ltd
Current assignee: Guangning Yingpin Zhizao Furniture Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-09-27
Anticipated expiration: 2032-05-10

Abstract

The utility model discloses a seat with adjustable back of chair height relates to the seat field, the on-line screen storage device comprises a base, first recess has been seted up in the left side of base upside surface, both sides rotate jointly around first recess inner wall and are connected with the bull stick, the pole wall fixedly connected with mounting panel of bull stick, the top of mounting panel is provided with a plurality of chairs down and leans on, the upside surface of mounting panel is connected with the lower side fixed surface that the lower chair of downside leaned on, the top that the lower chair of upside leaned on is provided with the chair and leans on, the thread groove has all been seted up on the upside surface that a plurality of chairs leaned on down, the equal threaded connection of inner wall of a plurality of thread grooves has the lead screw. The utility model discloses, user when adjusting the back of the chair in the difference can adjust the height of the back of the chair according to the height of self, convenient operation has brought conveniently for the operation simultaneously to can adjust according to user's use custom when the angle that the back of the chair used is adjusted.

Description

Chair with adjustable chair back height

Technical Field

The utility model relates to a seat field, in particular to seat with adjustable back of chair height.

Background

The chair is a daily life furniture, a seat with a backrest and armrests, and the variety of the chair is various, for example, a rest chair, which is a product for outdoor passersby to have a rest, is mainly used in public places such as parks, districts, large-scale amusement parks and shopping squares.

The applicant finds out through search among the inventions that Chinese patent discloses 'a seat capable of automatically adjusting height according to body sitting posture', its publication (publication) number is "CN 208582006U", in which a friction block in a sliding barrel is supported against a sleeve, a spring gives a force to the friction block, the sleeve slowly slides downwards on the friction block, when people feel that the height is adjusted to be proper, the body leans against the chair back to lean backwards, the rope on the supporting wheel is loosened, the outward pulling force of the T-shaped inserting block is not provided any more, the T-shaped inserting block is inserted into the socket of the sliding barrel under the action of the elastic belt to fix the descending trend of the chair, however, in the using process, the user has limited adjusting position for the angle of the chair back, only can adjust to the appointed position, and is inconvenient to adjust for different users, meanwhile, the user is inconvenient to adjust the height of the chair back, which causes inconvenience for users with different heights.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seat with adjustable back of chair height to solve and provide in the use among the above-mentioned background art, the user is limited in the angle to the back of the chair adjusting position, can only adjust appointed position, to the inconvenient adjustment of the user of difference, the user is inconvenient to highly adjusting the back of the chair simultaneously, leads to the problem of inconvenience of bringing for the user of different heights.

In order to achieve the above object, the utility model provides a following technical scheme: a chair with adjustable chair back height comprises a base, wherein a first groove is formed in the left side of the upper side surface of the base, rotary rods are connected to the front side and the rear side of the inner wall of the first groove in a rotating mode, a mounting plate is fixedly connected to the rod wall of each rotary rod, a plurality of lower chair rests are arranged above the mounting plate, the upper side surface of the mounting plate is fixedly connected with the lower side surface of each lower chair rest on the lower side, an upper chair rest is arranged above each lower chair rest on the upper side, threaded grooves are formed in the upper side surfaces of the lower chair rests, screw rods are in threaded connection with the inner walls of the threaded grooves, first cavities are formed in the lower side surfaces of the two upper chair rests and the lower side surface of the upper chair rest, the upper ends of the screw rods penetrate through the lower side surfaces of the lower chair rests and the lower side surfaces of the upper chair rests to the inside of the screw rods respectively, and first worm gears are fixedly connected with the upper ends of the screw rods, the back side surfaces of a plurality of corresponding first worm wheels are respectively connected with a first worm in a meshing manner.

Preferably, two of upside right side surface that the chair leaned on down and the right side surface that the chair leaned on last all seted up the second recess, and are a plurality of the right-hand member of first worm all runs through the inside of right side to second recess of first cavity inner wall, and is a plurality of the first knob of the equal fixedly connected with of right-hand member of first worm, it is a plurality of the equal fixedly connected with a plurality of first racks in surface of first knob, it is a plurality of the equal fixedly connected with a plurality of second racks of inner wall of second recess, it is a plurality of corresponding a side surface of first rack all is connected with a side surface meshing of corresponding second rack.

Preferably, the second cavity has all been seted up in the left side on both sides surface around the base, both ends run through the inside of both sides to the second cavity around first recess inner wall respectively around the bull stick, the equal fixedly connected with second worm wheel in both ends around the bull stick, two the equal meshing of downside surface of second worm wheel is connected with the second worm, the third cavity has all been seted up on the right side that both sides surface position in the second cavity around the base, two the right-hand member of second worm all runs through the inside of right side to third cavity of second cavity inner wall, two the equal fixedly connected with third worm wheel of right-hand member of second worm, two the common meshing of upside surface of third worm wheel is connected with the third worm.

Preferably, all third recesses are opened to the front side that the base front side surface is located the third cavity, the front end of third worm runs through the front side of third cavity inner wall to the inside of third recess, the front end fixedly connected with second turn button of third worm, the fixed surface of second turn button is connected with the third rack, the inner wall fixedly connected with fourth rack of third recess, it is a plurality of a side surface of fourth rack all is connected with a side surface meshing of third rack.

Preferably, the lower side surface of base rotates through the bearing and is connected with the telescopic link, the lower extreme fixedly connected with supporting leg group of telescopic link, the lower extreme fixedly connected with universal wheel of supporting leg group.

Preferably, a plurality of right side surfaces of the upper chair backrest and the lower chair backrest are fixedly connected with back cushions, and the upper side surface of the base is fixedly connected with a cushion.

The utility model discloses a technological effect and advantage:

1. through setting up base, bull stick, mounting panel, lower chair lean on, go up the chair and lean on, thread groove, lead screw, first worm wheel, first worm, the utility model discloses, user when adjusting the back of the chair in the difference, can adjust the height of the back of the chair according to the height of self, convenient operation has brought conveniently for the operation simultaneously to can adjust according to user's use custom when the angle that the back of the chair used is adjusted.

2. Lean on through the chair under setting up, go up the chair and lean on, first worm, first turn-button, first rack, the second rack, when rotating first turn-button, first turn-button stall can carry on spacingly in time, avoid the not hard up of internal arrangement, through setting up the base, the bull stick, the second worm wheel, the second worm, the third worm wheel, the third worm, conveniently drive the back of the chair and carry out the adjustment of angle, it is convenient that the user of weicheng has brought, through setting up the base, the third worm, the second turn-button, the third rack, the fourth rack, after second turn-button stall, carry on spacingly to the second turn-button, avoid not hard up of second turn-button, lead to the deflection of the back of the chair.

3. Through setting up base, telescopic link, supporting leg group, every phenomenon of the earth wheel, it is convenient to install holistic height's adjustment, and it is convenient for the user of difference to bring, makes things convenient for mobile device whole simultaneously, through setting up down the chair back, go up the chair back, back of the body pad, base, cushion, wholly brings the comfort when using at the device, has brought comfortable experience for the user of trying time seat for a long time.

Drawings

Fig. 1 is a schematic view of the whole front plane structure of the present invention.

Fig. 2 is a schematic view of the right plane of the lower chair back of the present invention.

Fig. 3 is an enlarged schematic view of the part a of the present invention.

Fig. 4 is a schematic view of the cross section structure of the upper side plane of the base of the present invention.

Fig. 5 is a schematic view of the three-dimensional structure of the base of the present invention.

In the figure: 1. a base; 2. a rotating rod; 3. mounting a plate; 4. a lower chair back; 5. an upper chair back; 6. a thread groove; 7. a screw rod; 8. a first worm gear; 9. a first worm; 10. a first knob; 11. a first rack; 12. A second rack; 13. a second worm gear; 14. a second worm; 15. a third worm gear; 16. a third worm; 17. a second knob; 18. a third rack; 19. a fourth rack; 20. a telescopic rod; 21. a support leg group; 22. a universal wheel; 23. a back pad; 24. a cushion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, an embodiment of the invention provides a chair with an adjustable chair back height, which comprises a base 1, wherein a first groove is formed in the left side of the upper side surface of the base 1, a rotating rod 2 is rotatably connected to the front side and the rear side of the inner wall of the first groove, a mounting plate 3 is fixedly connected to the rod wall of the rotating rod 2, a plurality of lower chair backs 4 are arranged above the mounting plate 3, the upper side surface of the mounting plate 3 is fixedly connected to the lower side surface of the lower chair back 4, an upper chair back 5 is arranged above the upper lower chair back 4, thread grooves 6 are formed in the upper side surfaces of the lower chair backs 4, screw rods 7 are in threaded connection with the inner walls of the thread grooves 6, first cavities are formed in the lower side surfaces of the upper two lower chair backs 4 and the lower side surface of the upper chair back 5, and the upper ends of the screw rods 7 penetrate through the lower side surfaces of the lower chair backs 4 and the lower side surface of the upper chair back 5 to the inside of the upper chair back 4 and the upper chair back 5 respectively, the first worm wheel 8 of the equal fixedly connected with in upper end of a plurality of lead screws 7, the rear side surface of a plurality of corresponding first worm wheels 8 all meshes and is connected with first worm 9, the utility model discloses, user when adjusting the back of the chair in the difference can adjust the height of the back of the chair according to the height of self, and convenient operation has brought conveniently for the operation simultaneously to can adjust according to user's use custom when the angle that the back of the chair used is adjusted.

The second embodiment is as follows:

as shown in fig. 2 and 3, in the seat with the adjustable seat back height according to the embodiment of the present invention, second grooves are respectively formed on the right side surfaces of the two upper lower seat backs 4 and the right side surface of the upper seat back 5, the right ends of the first worms 9 respectively penetrate through the right side of the inner wall of the first cavity to the inside of the second grooves, the right ends of the first worms 9 are respectively and fixedly connected with a first rotating knob 10, the surface of the first rotating knobs 10 is respectively and fixedly connected with a plurality of first racks 11, the inner wall of the second grooves is respectively and fixedly connected with a plurality of second racks 12, one side surface of each corresponding first rack 11 is respectively and meshingly connected with one side surface of the corresponding second rack 12, when the first rotating knobs 10 are rotated, the first rotating knobs 10 stop rotating and can timely limit, and the looseness of internal devices is avoided.

The third concrete embodiment:

as shown in fig. 1 and 4, in the seat with the adjustable seat back height according to the embodiment of the present invention, a second cavity is formed on the left side of the front and rear side surfaces of a base 1, the front and rear ends of a rotating rod 2 respectively penetrate through the front and rear sides of the inner wall of a first groove to the inside of the second cavity, the front and rear ends of the rotating rod 2 are fixedly connected with second worm gears 13, the lower side surfaces of the two second worm gears 13 are respectively connected with second worms 14 in a meshing manner, the front and rear side surfaces of the base 1 are located on the right side of the second cavity, third cavities are formed in the front and rear side surfaces of the base 1, the right ends of the two second worm gears 14 respectively penetrate through the right side of the inner wall of the second cavity to the inside of the third cavity, the right ends of the two second worm gears 14 are respectively fixedly connected with third worm gears 15, and the upper side surfaces of the two third worm gears 15 are jointly connected with third worms 16 in a meshing manner, which the seat back can be conveniently driven to adjust the angle, and convenience is brought to users.

The fourth concrete embodiment:

as shown in fig. 4, in the seat with the adjustable seat back height according to the embodiment of the present invention, all third grooves are formed in the front side surface of the base 1, which is located in the front side of the third cavity, the front end of the third worm 16 penetrates through the front side of the inner wall of the third cavity to the inside of the third groove, the front end of the third worm 16 is fixedly connected to the second knob 17, the surface of the second knob 17 is fixedly connected to the third rack 18, the inner wall of the third groove is fixedly connected to the fourth rack 19, one side surface of each of the plurality of fourth racks 19 is engaged with one side surface of the third rack 18, and after the second knob 17 stops rotating, the second knob 17 is limited, so as to avoid the second knob 17 from loosening and causing the deflection of the seat back.

The fifth concrete embodiment:

as shown in fig. 1 and 5, an embodiment of the invention provides a chair with an adjustable chair back height, wherein a telescopic rod 20 is rotatably connected to the lower side surface of a base 1 through a bearing, a supporting leg group 21 is fixedly connected to the lower end of the telescopic rod 20, and a universal wheel 22 is fixedly connected to the lower end of the supporting leg group 21, so that the height of the whole device can be conveniently adjusted, convenience is brought to different users, meanwhile, the whole device can be conveniently moved, back cushions 23 are fixedly connected to the right side surfaces of a plurality of upper chair backs 5 and the right side surface of a lower chair back 4, and a seat cushion 24 is fixedly connected to the upper side surface of the base 1, so that the whole device can bring comfort when in use, and comfort experience is brought to users who try to sit for a long time.

The utility model discloses the theory of operation: when the device is used, a user moves the whole device to a using position through the universal wheel 22 below the supporting leg group 21, the height of the telescopic rod 20 is adjusted to be a proper using position, when the angle of the chair back needs to be adjusted, the second rotating button 17 is rotated to drive the third worm 16 to rotate, the third worm 16 drives the two third worm wheels 15 to rotate, the third worm wheels 15 drive the second worm 14 to rotate, the second worm wheels 13 on the rotating rod 2 are driven to rotate, the mounting plate 3 on the rotating rod 2 deflects the angle to reach the using angle, the rotation of the second rotating button 17 is stopped, the third rack 18 on the second rotating button 17 and the fourth rack 19 of the third groove limit each other to provide certain resistance;

when a user needs to adjust the height of the chair back, the upper chair back 5 and the lower chair back 4 which correspond to the height of the position to be adjusted as required are adjusted, the first appointed rotating button 10 is rotated to drive the first worm 9 to be appointed, the first worm 9 drives the corresponding first worm gears 8 to be appointed, the lead screw 7 is driven to rotate, the lead screw 7 comes out of the threaded groove 6 under the action of the threaded groove 6, the appointed lower chair back 4 or the upper chair back 5 is prolonged to obtain the height, when the rotation of the first rotating button 10 is stopped, the second rack 12 in the second groove and the first rack 11 on the first rotating button 10 have certain resistance, the first rotating button 10 is limited, and when the cushion 24 on the base 1 and the cushion pads 23 on the lower chair back 4 and the upper chair back 5 are used by the user, the comfort is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a seat with adjustable back of chair height, includes the base, its characterized in that: a first groove is arranged on the left side of the upper side surface of the base, the front side and the rear side of the inner wall of the first groove are jointly and rotatably connected with a rotating rod, the rod wall of the rotating rod is fixedly connected with a mounting plate, a plurality of lower chair rests are arranged above the mounting plate, the upside surface of mounting panel and the downside fixed surface that the lower chair of downside leaned on are connected, the upside down the top that the chair leaned on down is provided with the chair and leans on, and is a plurality of the thread groove has all been seted up to the upside surface that the chair leaned on down, and is a plurality of the equal threaded connection of inner wall of thread groove has the lead screw, two of upside the downside surface that the chair leaned on down and the downside surface that the last chair leaned on all seted up first cavity, and is a plurality of the lower side surface that the chair leaned on and the downside surface that the last chair leaned on to inside are run through respectively to the upper end of lead screw, and is a plurality of corresponding the rear side surface of first worm wheel all meshes and is connected with first worm.

2. A chair back height adjustable seat as claimed in claim 1, wherein: the second recess has all been seted up, a plurality of to the right side surface that the chair leaned on down and the right side surface that the chair leaned on last all run through the inside of right side to the second recess of first cavity inner wall, a plurality of the equal fixedly connected with first turn-button of right-hand member of first worm, it is a plurality of the equal fixedly connected with a plurality of first racks in surface of first turn-button, it is a plurality of the equal fixedly connected with a plurality of second racks in inner wall of second recess, it is a plurality of corresponding a side surface of first rack all is connected with a side surface meshing of corresponding second rack.

3. A chair back height adjustable seat as claimed in claim 1, wherein: the left side on both sides surface all has seted up the second cavity around the base, both ends run through the inside of first recess inner wall front and back both sides to second cavity respectively around the bull stick, the equal fixedly connected with second worm wheel in both ends around the bull stick, two the downside surface of second worm wheel all meshes and is connected with the second worm, the third cavity has all been seted up on the right side that both sides surface position in the second cavity around the base, two the right-hand member of second worm all runs through the inside of right side to third cavity of second cavity inner wall, two the equal fixedly connected with third worm wheel of right-hand member of second worm, two the common meshing of the upside surface of third worm wheel is connected with the third worm.

4. A chair back height adjustable seat as claimed in claim 3, wherein: all third recesses are opened to the front side that the base front side surface is located the third cavity, the front end of third worm runs through the front side of third cavity inner wall to the inside of third recess, the front end fixedly connected with second turn button of third worm, the fixed surface of second turn button is connected with the third rack, the inner wall fixedly connected with fourth rack of third recess, it is a plurality of a side surface of fourth rack all is connected with a side surface meshing of third rack.

5. A chair back height adjustable seat as claimed in claim 1, wherein: the lower side surface of base rotates through the bearing and is connected with the telescopic link, the lower extreme fixedly connected with supporting leg group of telescopic link, the lower extreme fixedly connected with universal wheel of supporting leg group.

6. A chair back height adjustable seat as claimed in claim 1, wherein: the chair comprises a base, a plurality of upper chair rests and a plurality of lower chair rests, wherein the upper side surface of each upper chair rest and the lower side surface of each lower chair rest are fixedly connected with back cushions respectively, and the upper side surface of the base is fixedly connected with a cushion.