CN111038348A

CN111038348A - Chair with detachable seat

Info

Publication number: CN111038348A
Application number: CN202010005238.9A
Authority: CN
Inventors: 陈贤海; 林虹; 陈少克; 陈佳鑫; 孔嘉斌; 余卓英
Original assignee: Guangdong Hangte Technology Research Co Ltd; Guangdong Northwest Aviation Technology Co ltd
Current assignee: Guangdong Hangte Technology Research Co Ltd; Guangdong Northwest Aviation Technology Co ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-04-21

Abstract

The invention discloses a chair, which comprises an underframe, wherein a cushion and a backrest component are arranged on the upper side of the underframe, the backrest component comprises a backrest framework, the backrest framework comprises a left bearing rod, a right bearing rod and an upper cross rod, the left bearing rod, the right bearing rod and the upper cross rod are hollow rods, a back bearing arc section and a waist bearing arc section are respectively arranged on the left bearing rod and the right bearing rod, a backrest plate is fixedly connected to the front side of the backrest framework, a back bearing curved surface and a waist bearing curved surface are arranged on the backrest plate, a plurality of hollow holes are formed in the backrest plate, and sponge cushions are laid on the backrest plate and the front side of the backrest framework. The hollow left bearing rod, the hollow right bearing rod and the hollow upper transverse rod are used for manufacturing a backrest framework, and the hollow holes are formed in the backrest plate, so that the weight can be reduced; utilize the shape of predetermineeing of left side support rod, right side support rod and back board to support people's back and waist, reduce and utilize thick foam-rubber cushion to warp the back curve that comes the laminating people, can reduce the thickness of laying the foam-rubber cushion, reduce the space that the backrest occupy.

Description

Chair with detachable seat

Technical Field

The invention relates to the technical field of seats, in particular to a seat.

Background

Under the occasions of limited space and light weight requirements such as aviation, the seat has the requirements of light weight and small occupied space, but the prior common seat has heavier weight and thicker sponge on the backrest of the seat has larger occupied space. Those skilled in the art desire lighter weight, less space consuming seats.

Furthermore, a plurality of movable armrests capable of swinging up and down are often arranged on a plurality of seats side by side in a passenger car or aviation, the movable armrests can support arms when being placed transversely downwards, and the movable armrests can swing up and be placed vertically when people walk, so that the passing of people is not hindered. The movable armrest is usually clamped and fixed by the locking device when being laid transversely, and the movable armrest can only swing upwards by loosening the locking device before swinging upwards. The swing locking structure in the existing movable handrail is complex and inconvenient to install and use.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a seat which is light in weight and small in occupied space.

The chair comprises an underframe, a cushion and a backrest component are arranged on the upper side of the underframe, the backrest component comprises a backrest framework, the backrest framework comprises a left bearing rod, a right bearing rod and an upper transverse rod, the left bearing rod and the right bearing rod extend up and down, the left end and the right end of the upper transverse rod are respectively connected to the upper side of the left bearing rod and the upper side of the right bearing rod, the left bearing rod, the right bearing rod and the upper transverse rod are all hollow rods, a back bearing arc section and a waist bearing arc section are respectively arranged on the left bearing rod and the right bearing rod, a backrest plate is fixedly connected to the front side of the backrest framework, a back bearing curved surface and a waist bearing curved surface are arranged on the backrest plate, a plurality of hollow holes are formed in the backrest plate, and sponge cushions are laid on the front sides of the backrest plate and the backrest framework.

The seat provided by the embodiment of the invention has at least the following beneficial effects: the hollow left bearing rod, the hollow right bearing rod and the hollow upper transverse rod are used for manufacturing a backrest framework, and the hollow holes are formed in the backrest plate, so that the weight can be reduced; all be equipped with back bearing arc section and waist bearing arc section on left side holds the pole and holds the pole with the right side, be equipped with back bearing curved surface and waist bearing curved surface on the back plate, utilize the shape of predetermineeing of left side holding the pole, right side holding the pole and back plate to support people's back and waist, reduce and utilize thick foam-rubber cushion to warp the back curve of laminating people, can reduce the thickness of laying the foam-rubber cushion, reduce the space that the seat occupy.

According to some embodiments of the invention, a plurality of first upper mounting pieces are arranged on the upper side of the backrest plate backwards, the first upper mounting pieces are fixedly connected to the upper side of the upper cross rod, a plurality of first left mounting pieces and a plurality of first right mounting pieces are respectively arranged on the left side and the right side of the backrest plate backwards, the first left mounting pieces are fixedly connected to the left side of the left bearing rod, and the first right mounting pieces are fixedly connected to the right side of the right bearing rod.

According to some embodiments of the present invention, a left insertion rod and a right insertion rod are connected to an upper side of the bottom frame, and a lower end of the left support rod and a lower end of the right support rod are respectively sleeved on the left insertion rod and the right insertion rod.

According to some embodiments of the invention, the left inserted bar and the right inserted bar are both rotatably connected with the chassis, a linear driving device is hinged on the chassis, and a moving end of the linear driving device is hinged with the left inserted bar or the right inserted bar.

According to some embodiments of the invention, a display screen mounting plate is fixedly connected to the rear side of the backrest framework, a display screen mounting space is arranged between the display screen mounting plate and the backrest plate, a display screen mounting hole is formed in the display screen mounting plate, a plurality of second upper mounting pieces are arranged on the upper side of the display screen mounting plate in the forward direction, the second upper mounting pieces are fixedly connected to the upper side of the upper cross rod, a plurality of second left mounting pieces and a plurality of second right mounting pieces are respectively arranged on the left side and the right side of the display screen mounting plate in the forward direction, the second left mounting pieces are fixedly connected to the left side of the left bearing rod, and the second right mounting pieces are fixedly connected to the right side of the right bearing rod.

According to some embodiments of the present invention, the movable armrests disposed on the left and right sides of the backrest module are disposed on the bottom frame, the locking member and the first shaft hole disposed along the left-right direction are disposed on the upper side of the bottom frame, the first shaft hole is disposed on the rear side of the locking member, and the locking member is provided with a bayonet facing the front side; the movable armrest comprises a rotating seat which is rotatably connected to the upper side of the underframe, a first through groove which extends forwards and backwards is formed in the lower side of the rotating seat, a first shaft, a second shaft and a third shaft which are arranged in the left-right direction are arranged in the first through groove, the first shaft is inserted into the first shaft hole, the rotating seat is rotatably connected with the underframe through the first shaft, the second shaft is arranged on the front side of the first shaft, the third shaft is arranged on the front side of the upper side of the second shaft, and the second shaft abuts against the upper side of the underframe; the movable armrest further comprises a rotating buckle which is rotatably connected in the first through groove, the rotating buckle comprises an intermediate part, the intermediate part is connected to the third shaft, the rotating buckle is rotatably connected with the first through groove through the third shaft, the intermediate part is axially fixed to the third shaft, a clamping strip is fixedly connected to the lower side of the intermediate part, a first clamping hook facing the rear side is arranged at the lower end of the clamping strip, the first clamping hook is hooked with the clamping opening, a stirring strip is fixedly connected to the front side of the intermediate part, and an elastic compression piece which applies downward force to the stirring strip is arranged between the upper side face of the stirring strip and the upper side face of the first through groove; the movable handrail further comprises a supporting beam assembly extending in the front-back direction, and the rear side of the supporting beam assembly is fixedly connected to the upper side of the rotating seat.

According to some embodiments of the present invention, the second shaft abuts against an upper side of the locking member, the lower stroke end of the locking strip abuts against the second shaft, and an inclined surface facing the locking member is disposed on a lower side of the first hook.

According to some embodiments of the present invention, the upper side of the chassis is provided with a first screw hole arranged in an up-down direction, the first screw hole is internally threaded with a locking screw, the locking member includes the locking screw, and a screw head of the locking screw and the upper side of the chassis form the bayonet.

According to some embodiments of the present invention, the girder assembly includes a rectangular tube extending in a front-rear direction, a rear side of the rectangular tube is fixedly connected to an upper side of the rotating base, a lower cover is fixedly connected to a lower side of the rectangular tube, an upper cover is fixedly connected to an upper side of the rectangular tube, the lower cover and the upper cover the rectangular tube, a lower front cover portion provided at a front side of the rotating base is provided downward from a rear side of the lower cover, a lower rear cover portion provided at a rear side of the rotating base is provided downward from a rear side of the upper cover, a second through groove provided in the front-rear direction is provided at an upper side of the lower cover, the rectangular tube and the rotating base are both provided at inner sides of the second through groove, a third through groove provided in the front-rear direction is provided at a lower side of the upper cover, both left and right sides of the lower cover are provided at inner sides of the third through groove, a back-off hole is provided at a lower side of, the poking strip penetrates through the avoidance hole, and the tail end of the poking strip protrudes out of the lower side of the lower cover.

According to some embodiments of the present invention, the left side and the right side of the upper side of the second through groove are both provided with a limiting strip towards the middle, the limiting strip abuts against the upper side of the rectangular tube, the front side of the upper cover is provided with a front cover, the front cover is arranged on the front side of the rectangular tube, the front end of the lower cover is arranged in the front cover, the lower side of the lower cover is provided with a first through hole, the rectangular tube is provided with a second through hole opposite to the first through hole, the upper side of the third through groove is provided with a fixing nut opposite to the second through hole, the upper side of the third through groove is provided with a plurality of second hooks facing the rear side, and the upper side of the rectangular tube is provided with a plurality of hooking holes hooked with the plurality of second hooks in one-to-one correspondence.

The invention is used for the seat.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a perspective view of a front side of a back assembly according to an embodiment of the present invention;

FIG. 2 is a perspective view of the rear side of the backrest module according to the embodiment of the present invention;

FIG. 3 is a schematic perspective view of the right insertion rod and the right support rod at the rear side of the embodiment of the present invention;

FIG. 4 is an exploded view of the backrest frame and the backrest plate according to the embodiment of the present invention;

FIG. 5 is a schematic perspective view of an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a movable armrest according to an embodiment of the present invention;

FIG. 7 is an overall perspective view of a movable armrest according to an embodiment of the present invention;

FIG. 8 is a perspective view of the movable armrest of the embodiment of the present invention with the upper and lower covers removed;

FIG. 9 is a perspective view of the movable armrest of the embodiment of the present invention with the upper cover removed;

fig. 10 is a perspective view of the underside of the upper cover in an embodiment of the present invention.

In the drawings: 101-underframe, 102-locking piece, 103-left inserted bar, 104-right inserted bar, 105-linear driving device, 106-cushion, 201-rotating seat, 202-first through groove, 203-first shaft, 204-second shaft, 205-third shaft, 206-clamping strip, 207-first clamping hook, 208-toggle strip, 209-elastic compression piece, 301-girder-supporting component, 302-rectangular pipe, 303-lower cover, 304-upper cover, 306-third through groove, 308-limiting strip, 309-front cover, 310-first through hole, 311-second through hole, 312-fixing nut, 313-second clamping hook, 314-reinforcing piece, 315-hooking hole, 402-left supporting bar, 403-right supporting bar, 404-upper cross bar, 407-backrest plate, 408-a back bearing curved surface, 409-a waist bearing curved surface, 410-a hollow hole, 411-a sponge pad, 412-a first upper mounting piece, 414-a first right mounting piece, 415-a display screen mounting plate, 416-a display screen mounting hole, 418-a table fixing plate, 419-a table lock catch and 420-a table.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise explicitly defined, terms such as provided, connected and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

A seat according to an embodiment of the present invention is described below with reference to fig. 1 to 10.

The seat includes chassis 101, the upside of chassis 101 is equipped with cushion 106 and back subassembly, the back subassembly includes the back skeleton, the back skeleton includes left pole 402, right side pole 403 and last pole 404, left side pole 402 and right pole 403 all extend from top to bottom, go up the left end and the right-hand member of pole 404 and connect respectively in the upside of left pole 402 and the upside of right pole 403, left side pole 402 that holds, right side pole 403 and last pole 404 are hollow pole, all be equipped with back bearing segmental arc and waist bearing segmental arc on left side pole 402 that holds and the right pole 403 that holds, the front side fixedly connected with back plate 407 of back skeleton, be equipped with back bearing curved surface 408 and waist bearing 409 on back plate 407, be equipped with a plurality of fretwork holes 410 on the back plate, sponge pad 411 has been laid to the front side of back plate 407 and back skeleton.

The back and the waist of a person lean against the back plate 407, the hollow left support rod 402, the hollow right support rod 403 and the hollow upper cross rod 404 are used for making a back frame, and the hollow holes 410 are arranged on the back plate 407, so that the weight can be reduced. All be equipped with back bearing arc section and waist bearing arc section on left side bearing rod 402 and the right bearing rod 403, be equipped with back bearing curved surface 408 and waist bearing curved surface 409 on the back plate 407, back bearing arc section, waist bearing arc section, back bearing curved surface 408 and waist bearing curved surface 409 can be according to the human spine curve design of general height, utilize left bearing rod 402, the back and the waist of people are supported to the shape of predetermineeing of right side bearing rod 403 and back plate 407, reduce the waist back curve that utilizes thick foam-rubber cushion 411 to warp the people of laminating, can reduce the thickness of laying foam-rubber cushion 411, reduce the space that the seat occupy.

In some embodiments of the invention, the backrest plate 407 is integrally formed. The backrest plate 407 is integrally formed by punching, so that the connection between the back bearing curved surface 408 and the waist bearing curved surface 409 is more continuous.

In some embodiments of the present invention, a plurality of first upper mounting pieces 412 are disposed backwards on the upper side of the backrest plate 407, the first upper mounting pieces 412 are fixedly connected to the upper side of the upper cross bar 404, a plurality of first left mounting pieces and a plurality of first right mounting pieces 414 are disposed backwards on the left side and the right side of the backrest plate 407, respectively, the first left mounting pieces are fixedly connected to the left side of the left support rod 402, and the first right mounting pieces 414 are fixedly connected to the right side of the right support rod 403. The back plate 407 is attached from the front side of the back frame, and the first upper mounting piece 412, the first left mounting piece, and the first right mounting piece 414 abut against the upper side, the left side, and the right side of the back frame and are fixed with screws or rivets.

In some embodiments of the present invention, the upper side of the chassis 101 is connected to the left insert rod 103 and the right insert rod 104, and the lower end of the left support rod 402 and the lower end of the right support rod 403 are respectively sleeved on the left insert rod 103 and the right insert rod 104. The left support rod 402 and the right support rod 403 are respectively inserted into the left insertion rod 103 and the right insertion rod 104 and can be fixed by screws, so that the backrest framework is convenient to mount.

In some embodiments of the present invention, the left insertion rod 103 and the right insertion rod 104 are both rotatably connected to the base frame 101, the base frame 101 is hinged to the linear driving device 105, and the moving end of the linear driving device 105 is hinged to the left insertion rod 103 or the right insertion rod 104. The linear actuator 105 may be a hydraulic cylinder, and the backrest frame may swing back and forth with respect to the base frame 101 to adjust the reclining angle of the backrest frame.

In some embodiments of the present invention, a display screen mounting plate 415 is fixedly connected to a rear side of the backrest frame, a display screen mounting space is provided between the display screen mounting plate 415 and the backrest plate 407, a display screen mounting hole 416 is provided on the display screen mounting plate 415, a plurality of second upper mounting pieces are provided forward on an upper side of the display screen mounting plate 415, the second upper mounting pieces are fixedly connected to an upper side of the upper cross bar 404, a plurality of second left mounting pieces and a plurality of second right mounting pieces are provided forward on a left side and a right side of the display screen mounting plate 415, respectively, the second left mounting pieces are fixedly connected to a left side of the left support bar 402, and the second right mounting pieces are fixedly connected to a right side of the right support bar 403. A display screen mounting space is provided between the display screen mounting plate 415 and the back plate 407, and can be used for mounting a display, and the back plate 407 can protect the back of the display at the front side. The display screen mounting plate 415 is mounted from the rear side of the backrest frame, and the second upper mounting plate, the second left mounting plate and the second right mounting plate abut against the upper side, the left side and the right side of the backrest frame and are fixed by screws or rivets. The display screen mounting plate 415 can also be provided with hollowed-out holes 410 to reduce weight.

In some embodiments of the present invention, a table fixing plate 418 is fixedly connected to the rear side of the backrest frame, a plurality of third left mounting pieces and a plurality of third right mounting pieces are respectively disposed forward on the left side and the right side of the table fixing plate 418, the third left mounting pieces are fixedly connected to the left side of the left support rod 402, the third right mounting pieces are fixedly connected to the right side of the right support rod 403, and a table latch 419 is disposed on the table fixing plate 418. A folding table 420 is generally provided at the rear side of the seat to facilitate dining for the passengers in the rear row, and a table latch 419 is provided to latch the stored table 420.

In some embodiments of the present invention, the movable armrests disposed on the left and right sides of the backrest module are disposed on the bottom frame 101, the locking member 102 and the first shaft 203 hole disposed along the left-right direction are disposed on the upper side of the bottom frame 101, the first shaft 203 hole is disposed on the rear side of the locking member 102, and the locking member 102 is provided with a bayonet facing the front side; the movable armrest comprises a rotating seat 201 which is rotatably connected to the upper side of the underframe 101, a first through groove 202 which extends forwards and backwards is arranged on the lower side of the rotating seat 201, namely the section of the rotating seat 201 in the front-back direction is n-shaped, a first shaft 203, a second shaft 204 and a third shaft 205 which are all arranged in the left-right direction are arranged in the first through groove 202, the first shaft 203 is inserted into a hole of the first shaft 203, the rotating seat 201 is rotatably connected with the underframe 101 through the first shaft 203, the second shaft 204 is arranged on the front side of the first shaft 203, the third shaft 205 is arranged on the front side of the upper side of the second shaft 204, and the second shaft 204 abuts; the movable armrest further comprises a rotary buckle which is rotatably connected in the first through groove 202, the rotary buckle comprises a middle part, the middle part is connected to the third shaft 205, the rotary buckle is rotatably connected with the first through groove 202 through the third shaft 205, the middle part is axially fixed with the third shaft 205, a clamping strip 206 is fixedly connected to the lower side of the middle part, a first clamping hook 207 facing the rear side is arranged at the lower end of the clamping strip 206, the first clamping hook 207 is hooked with the bayonet, a toggle strip 208 is fixedly connected to the front side of the middle part, and an elastic compression piece 209 for applying downward pressure to the toggle strip 208 is arranged between the upper side of the toggle strip 208 and the upper side of the first through groove 202; the movable handrail further comprises a handrail assembly 301 extending in the front-rear direction, and the rear side of the handrail assembly 301 is fixedly connected to the upper side of the rotary seat 201.

The girder assembly 301 swings up and down with respect to the base frame 101 along with the rotating base 201. When the girder erection component 301 is laid downwards, the second shaft 204 abuts against the upper side of the underframe 101 for limiting, and the downward swinging angle of the girder erection component 301 is limited; the first hook 207 hooks the bayonet, and the elastic compression piece 209 presses the toggle bar 208 downwards, so that the first hook 207 cannot be pulled out of the bayonet. Before the first hook 207 hooks the bayonet, under the pressure of the elastic compression piece 209, the first hook 207 swings backwards, the first hook 207 cannot enter the bayonet, at this time, the toggle bar 208 can be firstly pulled upwards, the latch bar 206 rotates forwards by a certain angle, and the toggle bar 208 is then released after the beam supporting component 301 swings downwards to the position. When the support beam assembly 301 needs to be swung upwards, the toggle bar 208 is pulled up by a hand, the pressure of the elastic compression piece 209 is overcome, the clamping bar 206 is rotated forwards, and the first clamping hook 207 is pulled out of the clamping opening forwards, so that the support beam assembly 301 can be swung upwards. This technique realizes holding up the locking of roof beam subassembly 301 wobbling through rotatory buckle, bayonet socket and elastic compression piece 209, simple structure.

In some embodiments of the present invention, the second shaft 204 abuts against the upper side of the locking member 102, the lower stroke end of the locking bar 206 abuts against the second shaft 204, and the lower side of the first hook 207 is provided with an inclined surface facing the locking member 102. After the first hook 207 is disengaged from the bayonet, under the pressure of the elastic compression piece 209, the clamping strip 206 tends to swing backwards, and the second shaft 204 blocks the clamping strip 206 from swinging backwards; the inclined plane of the downside of the first pothook 207 of cooperation can make when holding up beam assembly 301 downswing, the locking piece 102 butt pushes away card strip 206 forward to the inclined plane of first pothook 207, the locking piece 102 does not withstand first pothook 207, after holding up beam assembly 301 downswing to the position, first pothook 207 is in the automatic card income bayonet socket under the pressure of elasticity compression piece 209, need not dial up with the hand and stir the strip 208 and just can downswing to the position convenient to use.

In some embodiments of the present invention, the upper side of the bottom chassis 101 is provided with a first screw hole arranged along the up-down direction, a locking screw is connected to the first screw hole in a threaded manner, the locking member 102 includes a locking screw, and a screw head of the locking screw forms a bayonet with the upper side of the bottom chassis 101. The locking screw can be adjusted up and down to adjust the transverse angle of the girder assembly 301.

In some embodiments of the present invention, the elastic compression element 209 is a U-shaped spring plate, a lower side plate of the elastic compression element 209 is fixedly connected to an upper side surface of the toggle bar 208 by screws, and an upper side plate of the elastic compression element 209 abuts against an upper side surface of the first through slot 202. The opening of the U-shaped spring piece is transversely arranged, the upper side piece and the lower side piece of the U-shaped spring piece respectively press the first through groove 202 and the toggle strip 208, the U-shaped spring piece is small in size, and occupied space is reduced.

In some embodiments of the present invention, the girder assembly 301 includes a rectangular tube 302 extending in a front-back direction, a rear side of the rectangular tube 302 is fixedly connected to an upper side of the rotary base 201, a lower cover 303 is fixedly connected to a lower side of the rectangular tube 302, an upper cover 304 is fixedly connected to an upper side of the rectangular tube 302, the lower cover 303 and the upper cover 304 cover the rectangular tube 302, a lower front cover portion disposed at a front side of the rotary base 201 is disposed downward from a rear side of the lower cover 303, a lower rear cover portion disposed at a rear side of the rotary base 201 is disposed downward from a rear side of the upper cover 304, a second through groove disposed in the front-back direction is disposed at an upper side of the lower cover 303, the rectangular tube 302 and the rotary base 201 are both disposed at inner sides of the second through groove, a third through groove 306 disposed in the front-back direction is disposed at a lower side of the upper cover 304, a left side and a right side of the lower cover 303 are both disposed at inner sides of the third through groove 306, the end of the toggle bar 208 protrudes from the underside of the lower cover 303. The rectangular tubes 302 are the main stress members of the girder assembly 301, and the hollow rectangular tubes 302 are adopted to reduce the weight. Covering the rectangular tube 302 with the upper cover 304 and the lower cover 303 serves an aesthetic function. The second through groove of the lower cover 303 firstly covers the lower side of the rectangular pipe 302, the front side of the rotating seat 201, and the left and right sides of the rectangular pipe 302 and the rotating seat 201, and the third through groove 306 of the upper cover 304 then covers the upper side of the rectangular pipe 302, the rear side of the rotating seat 201, and the left and right sides of the lower cover 303, so that the lower side edge of the upper cover 304 is arranged at the lower side of the girder erection component 301, and the upper side of the girder erection component 301 has no seam, and is more beautiful.

In some embodiments of the present invention, the left side and the right side of the upper side of the second through groove are both provided with a limiting strip 308 towards the middle, the limiting strip 308 abuts against the upper side of the rectangular tube 302, the front side of the upper cover 304 is provided with a front cover 309, the front cover 309 is provided at the front side of the rectangular tube 302, the front end of the lower cover 303 is provided in the front cover 309, the lower side of the lower cover 303 is provided with a first through hole 310, the rectangular tube 302 is provided with a second through hole 311 opposite to the first through hole 310, the upper side of the third through groove 306 is provided with a fixing nut 312 opposite to the second through hole 311, the upper side of the third through groove 306 is provided with a plurality of second hooks 313 facing the rear side, and the upper side of the rectangular tube 302 is provided with a plurality of hooking holes 315 hooked with the plurality of second hooks 313 in one. The lower cover 303 slides backwards from the front side of the rectangular tube 302, the rectangular tube 302 is sleeved in the second through groove, and the limiting strip 308 and the second through groove limit the lower cover 303; the upper cover 304 is sleeved from the front side of the rectangular pipe 302, the front cover 309 sleeves the front side of the lower cover 303, the fixing nut 312, the second through hole 311 and the first through hole 310 are opposite, and screws penetrate through the first through hole 310, the second through hole 311 and the fixing nut 312 from the lower side of the lower cover 303 to fixedly lock the lower cover 303 and the upper cover 304, so that connection is firm. When the upper cover 304 is sleeved on the upper side of the rectangular tube 302, the second hook 313 can be inserted into the hook connection hole 315 and then moved rightwards, so that the second hook 313 can be hooked on the hook connection hole 315, and the connection reliability of the upper cover 304 and the rectangular tube 302 is improved.

In some embodiments of the present invention, the front end of the lower cover 303 is disposed to be inclined downward, and a reinforcing member 314 is fixedly connected to a lower side of the front end of the rectangular tube 302, and the reinforcing member 314 abuts against an upper side of a lower side of the second through groove. The reinforcing member 314 is not fixed to the rectangular tube 302 before the lower cover 303, and after the lower cover 303 is fitted into the rectangular tube 302, the reinforcing member 314 is fixed to the rectangular tube 302 by screws or rivets. The reinforcing member 314 abuts against the front end of the lower cover 303 and has a reinforcing function; the lower cover 303 is more securely connected under the forward and rearward limits of the reinforcing member 314 and the rotatable base 201.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments, and various equivalent modifications or substitutions can be made within the knowledge of those skilled in the art without departing from the gist of the present invention, and these equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. The utility model provides a seat, a serial communication port, including the chassis, the upside of chassis is equipped with cushion and back subassembly, the back subassembly includes the back skeleton, the back skeleton includes that left side holds the pole, right side and goes up the pole, a left side hold the pole with the right side is all followed and is extended from top to bottom, the left end and the right-hand member of going up the horizontal pole connect respectively in the upside of left side holding the pole with the upside of right side holding the pole, a left side holding the pole the right side hold the pole with it is hollow rod to go up the pole, a left side hold the pole with all be equipped with back bearing segmental arc and waist bearing segmental arc on the right side holding the pole, the front side fixedly connected with backrest plate of back skeleton, be equipped with back bearing curved surface and waist bearing curved surface on the backrest plate, be equipped with a plurality of fretwork holes on the backrest plate, the backrest plate with the foam-rubber cushion has been laid to the.

2. The seat according to claim 1, wherein a plurality of first upper mounting pieces are arranged on the upper side of the backrest plate in a rearward direction, the first upper mounting pieces are fixedly connected to the upper side of the upper cross bar, a plurality of first left mounting pieces and a plurality of first right mounting pieces are arranged on the left side and the right side of the backrest plate in a rearward direction, respectively, the first left mounting pieces are fixedly connected to the left side of the left support rod, and the first right mounting pieces are fixedly connected to the right side of the right support rod.

3. The seat according to claim 1, wherein a left insertion rod and a right insertion rod are connected to the upper side of the underframe, and the lower ends of the left and right support rods are respectively sleeved on the left and right insertion rods.

4. The seat according to claim 3, wherein the left inserted link and the right inserted link are both rotatably connected with the bottom frame, a linear driving device is hinged on the bottom frame, and a moving end of the linear driving device is hinged with the left inserted link or the right inserted link.

5. The seat according to claim 1, wherein a display screen mounting plate is fixedly connected to the rear side of the backrest frame, a display screen mounting space is arranged between the display screen mounting plate and the backrest plate, display screen mounting holes are formed in the display screen mounting plate, a plurality of second upper mounting pieces are arranged on the upper side of the display screen mounting plate forward, the second upper mounting pieces are fixedly connected to the upper side of the upper cross rod, a plurality of second left mounting pieces and a plurality of second right mounting pieces are arranged on the left side and the right side of the display screen mounting plate forward respectively, the second left mounting pieces are fixedly connected to the left side of the left supporting rod, and the second right mounting pieces are fixedly connected to the right side of the right supporting rod.

6. The chair according to claim 1, wherein the underframe is provided with movable armrests arranged on the left side and the right side of the backrest assembly, the upper side of the underframe is provided with a locking piece and a first shaft hole arranged along the left-right direction, the first shaft hole is arranged on the rear side of the locking piece, and the locking piece is provided with a bayonet facing the front side; the movable armrest comprises a rotating seat which is rotatably connected to the upper side of the underframe, a first through groove which extends forwards and backwards is formed in the lower side of the rotating seat, a first shaft, a second shaft and a third shaft which are arranged in the left-right direction are arranged in the first through groove, the first shaft is inserted into the first shaft hole, the rotating seat is rotatably connected with the underframe through the first shaft, the second shaft is arranged on the front side of the first shaft, the third shaft is arranged on the front side of the upper side of the second shaft, and the second shaft abuts against the upper side of the underframe; the movable armrest further comprises a rotating buckle which is rotatably connected in the first through groove, the rotating buckle comprises an intermediate part, the intermediate part is connected to the third shaft, the rotating buckle is rotatably connected with the first through groove through the third shaft, the intermediate part is axially fixed to the third shaft, a clamping strip is fixedly connected to the lower side of the intermediate part, a first clamping hook facing the rear side is arranged at the lower end of the clamping strip, the first clamping hook is hooked with the clamping opening, a stirring strip is fixedly connected to the front side of the intermediate part, and an elastic compression piece which applies downward force to the stirring strip is arranged between the upper side face of the stirring strip and the upper side face of the first through groove; the movable handrail further comprises a supporting beam assembly extending in the front-back direction, and the rear side of the supporting beam assembly is fixedly connected to the upper side of the rotating seat.

7. The seat as claimed in claim 6, wherein the second shaft abuts against an upper side of the locking member, a lower stroke end of the hook strip abuts against the second shaft, and a lower side of the first hook is provided with an inclined surface facing the locking member.

8. The seat according to claim 7, wherein a first screw hole is formed in an upper side of the bottom frame in an up-down direction, a locking screw is screwed into the first screw hole, the locking member includes the locking screw, and a screw head of the locking screw and an upper side of the bottom frame form the bayonet.

9. The seat according to claim 6, wherein the armrest assembly comprises a rectangular tube extending in the front-rear direction, the rear side of the rectangular tube is fixedly connected to the upper side of the rotary seat, the lower side of the rectangular tube is fixedly connected with a lower cover, the upper side of the rectangular tube is fixedly connected with an upper cover, the lower cover and the upper cover the rectangular tube, the rear side of the lower cover is provided with a lower front cover portion arranged at the front side of the rotary seat in a downward direction, the rear side of the upper cover is provided with a lower rear cover portion arranged at the rear side of the rotary seat in a downward direction, the upper side of the lower cover is provided with a second through groove arranged in the front-rear direction, the rectangular tube and the rotary seat are both arranged at the inner side of the second through groove, the lower side of the upper cover is provided with a third through groove arranged in the front-rear direction, and the left side and the right side of the lower cover are both arranged at the inner side of, the downside of lower cover is equipped with dodges the hole, stir the strip and pass dodge the hole, stir the end protrusion of strip in the downside of lower cover.

10. The seat according to claim 9, wherein a limiting strip is arranged in the middle of each of the left side and the right side of the upper side of the second through groove, the limiting strip abuts against the upper side of the rectangular pipe, a front cover is arranged on the front side of the upper cover, the front cover is arranged on the front side of the rectangular pipe, the front end of the lower cover is arranged in the front cover, a first through hole is arranged on the lower side of the lower cover, a second through hole opposite to the first through hole is arranged on the rectangular pipe, a fixing nut opposite to the second through hole is arranged on the upper side of the third through groove, a plurality of second hooks facing the rear side are arranged on the upper side of the third through groove, and a plurality of hooking holes hooked with the plurality of second hooks in one-to-one correspondence are arranged on the upper side of the rectangular pipe.