CN116350027A - An adjustable comfortable flat-lying leisure chair - Google Patents

Abstract

The invention discloses an adjustable comfortable flat-lying leisure chair in the field of leisure chairs. The adjustable bottom box includes front and rear fixed seats, front and rear movable seats are installed on the front and rear fixed seats, the front and rear movable seats are connected with the seat cushions, spring seats are installed on the lower side of the front and rear fixed seats, and the spring seats are vertically arranged below There is a gas spring, the lifting end of the gas spring is connected with the spring seat, and the lower end of the gas spring is fixed on the chair base. The adjustment bottom box is provided with a lock corresponding to the front and rear moving seats, and a control adjustment is provided corresponding to the lock. Locking wrench for back box. The invention improves people's comfort when using the leisure chair, and can swing back and forth.

Description

An adjustable comfortable flat-lying leisure chair

technical field

The invention belongs to the field of leisure chairs, in particular to an adjustable comfortable flat-lying leisure chair.

Background technique

In the prior art, most leisure chairs on the market can only adjust the angle of the backrest and the height of the seat, and do not have the function of adjusting the swing angle of the seat cushion, so it is difficult to meet people's requirements for comfort; The need to lie flat when using a leisure chair led to the study of a chair with a footrest, but its disadvantages are: the footrest needs to be unfolded manually, which is cumbersome, not humane enough, and the comfort experience is poor when used.

Contents of the invention

The purpose of the present invention is to provide an adjustable comfortable flat-lying leisure chair, which improves the comfort of people when using the leisure chair, and proposes a chair that can swing back and forth and move back and forth. The chair can swing back and forth by adjusting the bottom box, and through Gravity drives the chair cushion to complete the backward movement, unfold the footrest along the way, and control the locking through the locking wrench and the lock, and the backrest behind the cushion can be self-adaptive to complete the tilting, so as to meet people's higher requirements for comfort.

The purpose of the present invention is achieved in the following way: an adjustable comfortable flat-lying leisure chair, including a cushion, the left and right sides of the cushion are provided with armrests, the rear side of the cushion is provided with a backrest, and the lower side of the cushion is provided with an adjustable bottom The adjustable bottom box includes front and rear fixed seats, front and rear movable seats are installed on the front and rear fixed seats, the front and rear movable seats are connected with the seat cushions, spring seats are installed on the lower side of the front and rear fixed seats, and vertical A gas spring is arranged directly, the lifting end of the gas spring is connected with the spring seat, the lower end of the gas spring is fixed on the chair base, and the lock is arranged on the bottom box of the adjustment corresponding to the front and rear moving seats, and a lock is arranged corresponding to the lock. Control and adjust the locking wrench of the bottom box.

As a further improvement of the present invention, the spring seat includes a mounting base body with an inverted U-shaped cross-section. Two parallel fixed shafts are arranged on the mounting base body. The front and rear ends of the fixed shafts pass through the mounting base body longitudinally. An inverted U-shaped support seat is arranged vertically above the body, and two connecting ears are arranged on the lower parts of the left and right sides of the supporting seat, and the four connecting ears are respectively fixed with the corresponding extension ends of the two fixed shafts; the gas spring includes an outer Fixing sleeve, the outer fixing sleeve is connected with a lifting rod, the upper end of the lifting rod is provided with an air button, the lower end of the outer fixing sleeve is fixed on the chair base, the upper end of the lifting rod is fixed with the lower side of the mounting base body, and the lower side of the mounting base body There is a fixed sleeve set on the outer periphery of the lifting rod, and a lifting groove is opened through the mounting base body. The lifting groove includes a circular groove and a lateral groove, and the air button is correspondingly inserted into the circular groove. The lifting wrench corresponding to the air button is set through the lateral slot. The lifting action of the seat cushion is controlled by the gas spring, and the lower end of the gas spring is fixed to the chair base.

As a further improvement of the present invention, the cross-section of the front and rear seats is inverted U-shaped, the middle part of the front and rear seats is fixed on the middle part of the support seat, the middle part of the front and rear seats is vertically interlaced with the middle part of the support seat, and the front and rear sides of the front and rear seats are uniform. There are two longitudinally protruding plates extending outward, and the two protruding plates are arranged opposite to each other on the left and right, and a front shaft and a rear shaft are respectively arranged transversely between the ends of the two protruding plates on the front side and the rear side. The left and right ends of the shaft pass through the corresponding extension plate outwards, the extension end of the front shaft is covered with roller bearings, the support connecting plate is installed on the rear shaft, and the end of the rear shaft is rotatably connected with the corresponding extension plate , the lower part of the support connecting plate is equipped with a transverse connecting shaft, and the left and right ends of the connecting shaft protrude outward; The front and rear movable plates are opposite to each other. The two front and rear movable plates are respectively facing the left and right sides of the front and rear fixed seats. The corresponding roller bearings on the front and rear movable plates are provided with arc-shaped guide support grooves. The left and right sides of the front and rear movable plates are surrounded by guide supports. There is a flanging on the outer periphery of the groove, and two roller bearings are respectively arranged in two guide support grooves. The lower rear parts of the two front and rear moving plates are respectively hinged with the left and right ends of the connecting shaft, and the connecting shaft passes through vertically. The front and rear movable plates and the connecting shaft are provided with annular limit grooves that can accommodate the front and rear movable plates, and the corresponding support seats on the front and rear movable plates are provided with avoidance grooves. The front part of the front and rear movable seats is supported on the roller bearing through the guide support groove, and the rear part of the front and rear movable seats is supported on the support connecting plate through the connecting shaft. When the guide support grooves of the front and rear movable seats swing back and forth along the roller bearing, the The connecting plate swings relative to the front and rear fixed seats, and the front and rear moving plates rotate relative to the connecting shaft. The front and rear moving plates, the front and rear fixed seats and the connecting shaft form a link-like chute mechanism; the guide support groove enables the front and rear moving seats and cushions to meet the forward swing of 5° When swinging back 10°, when swinging forward 5°, the person's center of gravity is in the front, and the bearing is located at the front of the guide support groove; when leaning back 10°, the person's center of gravity is behind, and the bearing is located at the rear of the guide support groove; When it is horizontal, the lock head of the guide post of the locker is inserted into the locking groove of the front and rear seats.

As a further improvement of the present invention, the front side of the cushion connecting plate is vertically provided with a downwardly extending bending portion, the bending portion is fixed with the two front and rear moving plates, and the left and right sides of the cushion connecting plate are provided with two front and rear Spaced guide parts, roller bearings are installed on the guide parts through vertical pin shafts, spring grooves are opened in the middle of the underside of the seat cushion, and two guide grooves symmetrically distributed on the left and right sides of the spring groove are opened on the underside of the seat cushion. The roller bearings are matched and installed in the corresponding guide grooves respectively. The width of the middle groove of the guide groove is larger than the width of the upper and lower grooves. Two sets of elastic buffer assemblies are arranged in parallel to the corresponding spring grooves on the seat cushion connecting plate. The elastic buffer assemblies include two There are two rectangular installation sleeves opposite to each other. The installation sleeve is fixedly connected with a center rod. The center rod is inserted vertically into the installation sleeve and fixed with the bottom of the inner wall of the installation sleeve. A spring is arranged between the bottom of the inner wall of the two installation sleeves. The spring is set on the two center rods. On the outer periphery, two central rods are set correspondingly front and rear, the rear central rod is a hollow rod, the outer diameter of the front central rod matches the inner diameter of the rear hollow rod, and the two rear mounting sleeves are fixed with the cushion connecting plate, and the spring will The two mounting sleeves in the front are elastically opposed to the front part of the spring groove, and the upper parts of the two mounting sleeves in the rear stretch into the spring groove. When the front and rear movable seats swing backward, the seat cushion slides backward relative to the seat cushion connecting plate, and the roller bearing cooperates with the guide groove to guide the seat cushion. When the cushion moves backward, it provides resistance to reduce the impact caused by the movement, and at the same time completes the compression of the spring to provide power for the reset of the cushion. The central rod and the hollow rod cooperate to play a guiding role.

As a further improvement of the present invention, the armrest includes rod one hinged to the side of the seat cushion, the side of the cushion plate is provided with a mounting hole corresponding to rod one, the other end of rod one is hinged to rod two, and the other end of rod two is hinged to the side of the backrest, The back of the backrest is integrally provided with an L-shaped swinging plate, and the lower side of the rear of the seat cushion is provided with two corresponding mounting seats on the left and right. The front of the swinging plate is hinged to the two mounting seats through a horizontal rotating shaft, and a torsion spring is provided at both ends of the rotating shaft. . The armrest is divided into two parts, the two parts of the armrest are respectively hinged with the seat cushion and the backrest through the shaft, and the two parts of the armrest are connected by rotation, so that the armrest can complete the deformation and drive the backrest to complete the dumping, making it more suitable for the user's back; the seat cushion and the backrest A torsion spring is installed at both ends of the connecting shaft, which provides resistance to the process of the backrest falling backwards and provides power for the reset of the backrest.

As a further improvement of the present invention, the lower side of the front part of the seat cushion is hinged with a foot support through the support, and the rear side of the foot support is hinged with two left and right symmetrical swing rods. The second is hinged with two front and rear moving plates, and the two swing bars are respectively located at the outer sides of the two front and rear moving plates. The foot rest is hinged with the seat cushion and the swing rod. One end of the swing rod is connected with the front and rear movable plates of the bottom box, and the other end is connected with the foot rest; the front and rear movable plates, seat cushion, foot rest and swing rod form a crank slider mechanism The deployment and recovery of the foot support can be completed by moving the seat cushion.

As a further improvement of the present invention, the locking device is installed on any front and rear moving plates, the locking device includes a guide sleeve fixedly connected with the front and rear moving plates, the rear end of the guide sleeve is provided with an end cover, and the pull wire head passes through the end cover And extend into the guide sleeve, the pull wire head is movably connected with the end cover, the front end of the guide sleeve is fitted with a guide post lock that can move axially, and the front and rear moving plates are provided with through holes that can accommodate the guide post lock. , the front and rear sides of the seat are provided with locking grooves corresponding to the lockers, the front ends of the guide post locks match the locking grooves, there is a pull wire connecting the two between the pull wire head and the guide post lock head, and the front elastic resistance of the end cover is set There is a spring, and the front end of the spring elastically resists on the lock head of the guide post, and the front end of the pull wire head is located at the inner periphery of the spring. The pull wire head can be pulled, and the expansion and contraction of the guide post lock end is controlled through the cooperation of the pull wire and the spring. After the guide post lock end is pulled out, the spring will drive the guide post lock end to reset.

As a further improvement of the present invention, a locking wrench is connected to the cushion connecting plate, and the locking wrench includes a wrench seat, the upper part of the wrench seat is hinged with a locking wrench, and the lower part of the wrench seat is hinged with a cable chuck corresponding to the locking wrench , an insertion slot is provided on the pull clamp, a drive pin is provided on the lock wrench, the drive pin is parallel to the rotation axis of the lock wrench, the drive pin is arranged transversely through the insertion slot, and the drive pin is set corresponding to the inner wall of the insertion slot, There are two locking wrenches arranged side by side, a connecting block is arranged between the two locking wrenches, a pull wire head that can move back and forth is provided at the front of the wrench seat, a pull wire is arranged between the pull wire head and the pull wire chuck, and the lock wrench pull wire head and the A connecting wire is arranged between the pull wire heads of the locking device. The drive pin shaft is driven by the locking wrench, thereby driving the movement of the pull wire chuck, so that the pull wire transmits the pulling force to achieve the purpose of controlling the lock.

Compared with the prior art, the beneficial effect of the present invention is that the chair of the present invention has an adjustable bottom box that can change the spatial state of the chair, a seat cushion that can move back and forth, a foot rest that can be automatically extended and retracted, and a deformable armrests and a reclining backrest. Among them, the arc guide support grooves set on the front and rear moving plates should satisfy H=L×sinα, where L is a fixed value for the distance between the front axle and the rear axle on the front and rear seats, and α is the swing angle, and -5°<α< 10°, H is the height of the arc guide support groove compared to the rear axle on the front and rear seats. The arc guide support grooves on the front and rear movable plates play a role in guiding and restricting movement. In addition, in order to better control and adjust the state of the bottom box, a bottom box controller is set up, with a lock for locking the moving plate and a locking wrench for controlling the lock. The locking wrench is installed under the seat cushion through the connecting plate, and the work of the locking device is controlled by a pull wire. The invention realizes the swing and state locking of the chair through the bottom box and the controller, thereby effectively improving the comfort of the chair. The bottom box and the controller can complete the swing of the chair in the front and back direction, and can complete the return and locking of the chair state.

其中m为坐垫和脚托质量之和，M等于m+70kg，α为底盒前后摇摆的角度，x为弹簧压缩距离，其中弹簧压缩距离又与脚托组成的曲柄滑块机构有关。脚托从垂直状态完全展开至水平状态，测得曲柄的摇摆角度β约为34°，根据曲柄滑块机构滑块的位移公式/>

其中r为曲柄长度，l为脚托上两孔间的距离，且/>

应该小于所选弹簧的弹性极限。The seat cushion and the foot rest of the present invention have an automatic reset function. The spring selection under the cushion should satisfy

Among them, m is the sum of the mass of the seat cushion and the footrest, M is equal to m+70kg, α is the angle of the bottom box swinging back and forth, x is the spring compression distance, and the spring compression distance is related to the crank slider mechanism composed of the footrest. The foot support is fully extended from the vertical state to the horizontal state, and the swing angle β of the crank is measured to be about 34°. According to the displacement formula of the slider of the crank slider mechanism />

where r is the length of the crank, l is the distance between the two holes on the foot support, and />

Should be less than the elastic limit of the chosen spring.

本发明的靠背同样具有自动复位功能，其中选用的扭簧应该满足/>

其中E为扭簧材料的弹性模量，d为扭簧线径，/>

为扭转角度，/>

L₁为扭臂长度，m₁为靠背和扶手的质量和，M₁等于m₁+30kg，此外扭簧的弹性限度应大于/>

The armrest of the present invention is divided into upper and lower parts. The upper and lower parts of the armrest are respectively connected with the seat cushion and the backrest through the connecting shaft, and the two parts of the armrest are connected by rotation, so that the armrest can complete the deformation and drive the backrest to complete the dumping. The armrest should meet D ₁ +D ₂ >a, where D ₁ is the length of the lower part of the armrest, D ₂ is the length of the upper part of the armrest, a is the distance between the seat cushion and the armrest connection hole opened on the chair, according to the cosine law

The backrest of the present invention also has an automatic reset function, wherein the torsion spring selected should satisfy

Where E is the modulus of elasticity of the torsion spring material, d is the wire diameter of the torsion spring, />

is the twist angle, />

L ₁ is the length of the torsion arm, m ₁ is the sum of the mass of the backrest and armrest, M ₁ is equal to m ₁ +30kg, and the elastic limit of the torsion spring should be greater than />

Description of drawings

Fig. 1 is a schematic structural view of the cushion of the present invention when it is horizontal.

Fig. 2 is a maximum expanded state diagram of the leisure chair of the present invention.

Fig. 3 is a three-dimensional structure diagram of the leisure chair of the present invention.

Fig. 4 is a three-dimensional structure diagram of the bottom of the leisure chair of the present invention.

Fig. 5 is a three-dimensional structure diagram of the adjusting bottom box of the present invention.

Fig. 6 is a three-dimensional structure diagram of the adjusting bottom box of the present invention.

Fig. 7 is a schematic diagram of the structure of the upper part of the adjustment bottom box.

Fig. 8 is a structural schematic diagram of the front and rear moving plates on the hidden side of the adjustment bottom box.

Fig. 9 is a schematic diagram of the installation of the foot rest of the present invention.

Fig. 10 is a schematic diagram of the installation of the seat cushion of the present invention.

Figure 11 is a schematic structural view of the bottom of the cushion.

Figure 12 is a schematic structural view of the locker.

Fig. 13 is a schematic diagram of the internal structure of the locker.

Fig. 14 is a schematic structural view of the locking wrench.

Fig. 15 is a structural schematic view of the locking wrench removing the wrench seat.

Figure 16 is a schematic structural view of the gas spring.

Figure 17 is a schematic structural view of the spring seat.

Figure 18 is a schematic diagram of the bottom structure of the spring seat.

Figure 19 is a shape diagram of the guide groove.

Fig. 20 is a schematic structural view of the torsion spring on the first rotating shaft.

Among them, gas spring 1, external fixed sleeve 101, lifting rod 102, air button 103, lifting wrench 2, spring seat 3, mounting base body 301, fixed shaft 302, support seat 303, connecting ear 303a, fixing sleeve 304, lifting Groove 305, circular groove 305a, lateral groove 305b, adjustment bottom box 4, front and rear movable seats 401, seat cushion connecting plate 401a, bending part 401a1, guide part 401a2, front and rear moving plate 401b, roller bearing 402, front axle 403, Guide support groove 404, coupling shaft 405, front and rear seat 406, extension plate 406a, flange 407, through hole 408, support connection plate 409, rear axle 410, roller bearing 411, locker 5, guide post lock 501, guide sleeve 502, end cap 502a, pull wire head 503, pull wire 504, spring 505, lock wrench 6, wrench seat 601, lock wrench 602, connection block 603, pull wire collet 604, pull wire head 605, pull wire 606, drive Pin shaft 607, insertion slot 608, foot support 7, rotating shaft 2 701, swing rod 702, seat cushion 8, seat plate 801, mounting hole 802, support 803, guide groove 804, spring groove 805, installation sleeve 806, center rod 807 , spring 808, backrest 9, swing plate 901, mounting seat 902, torsion spring 903, shaft one 904, armrest 10, rod one 1001, rod two 1002, locking groove 11.

Detailed ways

As shown in Figure 1-20, it is an adjustable comfortable flat-lying leisure chair, including a seat cushion 8, armrests 10 are provided on the left and right sides of the seat cushion 8, a backrest 9 is provided on the rear side of the seat cushion 8, and a backrest 9 is provided on the lower side of the seat cushion. There is an adjustable bottom box 4, the adjustable bottom box 4 includes front and rear fixed seats 406, front and rear fixed seats 406 are equipped with front and rear moving seats 401 that can swing forward and backward, front and rear moving seats 401 are connected with seat cushions, front and rear fixed seats 406 lower sides are equipped with springs Seat 3, a gas spring 1 is arranged vertically below the spring seat 3, the lifting end of the gas spring 1 is connected to the spring seat 3, the lower end of the gas spring 1 is fixed on the chair base, and the front and rear movable seats 401 corresponding to the adjustment bottom box 4 are provided with The locking device 5 is correspondingly provided with a locking wrench 6 for controlling and adjusting the bottom box 4 .

The spring seat 3 includes a mounting base body 301 with an inverted U-shaped cross section. Two parallel fixed shafts 302 are arranged on the mounting base body 301. The front and rear ends of the fixed shafts 302 pass through the mounting base body 301 longitudinally. An inverted U-shaped support seat 303 is vertically arranged, and two connecting ears 303a are arranged on the left and right sides of the supporting seat 303, and the four connecting ears 303a are respectively fixed with the corresponding extension ends of the two fixed shafts 302; Including an external fixation sleeve 101, the external fixation sleeve 101 is connected with a lifting rod 102, the upper end of the lifting rod 102 is provided with an air button 103, the lower end of the outer fixing sleeve 101 is fixed on the chair base, and the upper end of the lifting rod 102 is connected to the lower side of the mounting base body 301 Fixed, the lower side of the mounting base body 301 is provided with a fixed sleeve 304 sleeved on the outer periphery of the lifting rod 102, and the mounting base body 301 is provided with a lifting groove 305. The lifting groove 305 includes a circular groove 305a and a lateral groove 305b. The air button 103 Correspondingly protruding into the circular groove 305a, a lifting wrench corresponding to the air button 103 is rotatably connected to the mounting base body 301, and the lifting wrench is set through the lateral groove 305b. The lifting action of the seat cushion is controlled by the gas spring 1, and the lower end of the gas spring 1 is fixed to the chair base.

The cross-section of the front and back seat 406 is an inverted U shape, the front and rear seat 406 middle parts are fixed on the support seat 303 middle part, the front and rear seat 406 middle parts are vertically staggered with the support seat 303 middle part, and the front and rear seats 406 are provided with two front and rear sides. A longitudinally protruding plate 406a extending outwards, two protruding plates 406a are arranged opposite to each other, a front axle 403 and a rear axle 410 are arranged transversely between the ends of the two protruding plates 406a on the front side and the rear side respectively, The left and right ends of the shaft 403 pass through the corresponding extension plate 406a outwards, the extension end of the front shaft 403 is covered with a roller bearing 402, the rear shaft 410 is equipped with a support connecting plate 409, and the end of the rear shaft 410 is connected to the corresponding extension. The output plate 406a is connected in rotation, and the lower part of the support connecting plate 409 is equipped with a transverse connecting shaft 405, and the left and right ends of the connecting shaft 405 protrude outward; Two front and rear moving plates 401b are vertically arranged on the lower side of the plate 401a. The two front and rear moving plates 401b respectively face the left and right sides of the front and rear fixed seats 406. The front and rear moving plates 401b are provided with arcs corresponding to the roller bearings 402. Shaped guide support groove 404, the left and right sides of the front and rear moving plates 401b are provided with flanges 407 around the outer periphery of the guide support groove 404, and two roller bearings 402 are respectively arranged in the two guide support grooves 404, and the two front and rear moving plates The lower rear part of 401b is hinged with the left and right ends of the connecting shaft 405 respectively, and the connecting shaft 405 vertically passes through the front and rear moving plates 401b, and the connecting shaft 405 is provided with an annular limit groove that can accommodate the front and rear moving plates 401b. The front and rear movable plates 401b are provided with avoidance grooves corresponding to the support seats 303 . The front part of the front and rear movable seats 401 is supported on the roller bearing 402 through the guide support groove 404, and the rear part of the front and rear movable seats 401 is supported on the support connecting plate 409 through the coupling shaft 405, and the guide support grooves 404 of the front and rear movable seats 401 are along the When the roller bearing 402 swings back and forth, the supporting connecting plate 409 swings relative to the front and rear fixed seats 406, and the front and rear moving plates 401b rotate relative to the connecting shaft 405. The guide support groove 404 makes the front and rear movable seat 401 and the seat cushion meet the swing requirements of 5° forward swing and 10° backward swing. When swinging forward 5°, the center of gravity of the person is in front, and the bearing is located at the front of the guide support groove 404; During 10 °, people's center of gravity is behind, and bearing is positioned at guide support groove 404 rear parts;

The front side of the cushion connecting plate 401a is vertically provided with a downwardly extending bending portion 401a1, the bending portion 401a1 is fixed with the two front and rear moving plates 401b, and the left and right sides of the cushion connecting plate 401a are provided with two spaced guide portions. 401a2, the roller bearing 411 is installed on the guide part 401a2 through the vertical pin shaft, the spring groove 805 is opened in the middle part of the lower side of the seat cushion 8, and two guide grooves symmetrically distributed on the left and right sides of the spring groove 805 are opened on the lower side of the seat cushion 8 804, two rows of roller bearings 411 are installed in the corresponding guide groove 804 respectively, the width of the middle groove of the guide groove 804 is larger than the width of the upper and lower grooves, and two sets of elastic buffer components are arranged in parallel on the corresponding spring groove 805 on the cushion connecting plate 401a, The elastic buffer assembly includes two front and rear facing rectangular installation sleeves 806. A central rod 807 is fixedly connected to the installation sleeve 806. The central rod 807 is vertically inserted into the installation sleeve 806 and fixed to the bottom of the inner wall of the installation sleeve 806. The inner walls of the two installation sleeves 806 A spring 808 is arranged between the bottoms, and the spring 808 is set on the outer circumference of the two central rods 807, and the two central rods 807 are arranged correspondingly front and rear, the rear central rod 807 is a hollow rod, and the outer diameter of the front central rod 807 is the same as the inner diameter of the rear hollow rod. The two installation sleeves 806 at the rear are all fixed to the cushion connecting plate 401a, the spring 808 elastically resists the two installation sleeves 806 at the front of the spring groove 805, and the upper parts of the two installation sleeves 806 at the rear extend into the spring Inside the slot 805. When the front and rear movable seats 401 swing backward, the seat cushion 8 slides backward relative to the seat cushion connecting plate 401a, the roller bearing 411 cooperates with the guide groove 804 to guide the seat cushion 8, and one installation sleeve 806 is fixedly connected on the seat cushion connecting plate 401a, and the other installs The cover 806 is against the spring groove 805 of the cushion, and provides resistance to reduce the impact caused by the movement when the cushion moves backwards, and at the same time completes the compression of the spring to provide power for the reset of the cushion plate 801, and the central rod 807 and the hollow rod cooperate to play a role. guiding role.

Armrest 10 comprises bar one 1001 that is hinged with the side of the seat cushion, and the corresponding bar one 1001 on the side of the cushion plate is provided with mounting hole 802, and the other end of bar one 1001 is hinged with bar two 1002, and the other end of bar two 1002 is hinged with the side of backrest 9, and the backrest 9. The rear part is integrally provided with an L-shaped swing plate 901, and the underside of the seat cushion rear part is provided with two left and right corresponding mounting seats 902. Both ends are provided with torsion springs 903 . The armrest 10 is divided into two parts, the two parts of the armrest 10 are respectively hinged with the seat cushion and the backrest 9 through shafts, and the two parts of the armrest 10 are connected by rotation, so that the armrest 10 can complete deformation and drive the backrest 9 to complete the dumping, making it more suitable for use The person's back; the connecting shaft one 904 two ends of seat cushion and backrest 9 are equipped with torsion spring 903, provide resistance for the process that backrest 9 topples backward, and provide power for the reset of backrest 9.

The lower side of the front portion of the seat cushion is hinged with a foot support 7 through a support 803, and the rear side of the foot support 7 is hinged with two left and right symmetrical swing bars 702, and a rotating shaft 2 701 is horizontally arranged between the two swing bars 702, and a rotating shaft 2 701 is hinged to the two front and rear moving plates 401b, and the two swing rods 702 are respectively located on the outer sides of the two front and rear moving plates 401b. Foot support 7 is all hinged with seat cushion, fork 702, and one end of fork 702 links to each other with the front and rear moving plate 401b of adjusting bottom box 4, and the other end links to each other with foot support 7; Front and rear moving plate 401b, seat cushion, foot support 7 and fork 702 constitutes a crank-slider mechanism, and the expansion and recovery of the foot support 7 can be completed by moving the seat cushion.

The locking device 5 is installed on any front and rear moving plate 401b, and the locking device 5 includes a guide sleeve 502 fixedly connected with the front and rear moving plates 401b, the rear end of the guide sleeve 502 is provided with an end cover 502a, and the pull wire head 503 passes through the end cover 502a And extend into the guide sleeve 502, the pull wire head 503 is flexibly connected with the end cover 502a, the front end of the guide sleeve 502 is fitted with a guide post lock head 501 that can move axially, and the front and rear moving plates 401b are equipped with a guide post lock that can accommodate The through hole 408 through which the head 501 passes, the front and rear fixed seat 406 sides corresponding to the locker 5 are provided with a locking groove 11, the front end of the guide post lock end 501 matches the locking groove 11, and the pull wire head 503 and the guide post lock end 501 are provided with a locking groove 11. There is a backguy 504 connecting the two, and a spring 505 is provided in front of the end cover 502a for elastic resistance. The pull wire head 503 can be pulled, and the expansion and contraction of the guide post lock head 501 is controlled by the cooperation of the pull wire 504 and the spring 505. After the guide post lock head 501 is pulled out, the spring 505 will drive the guide post lock head 501 to reset.

The seat cushion connection plate 401a is connected with a locking wrench 6, the locking wrench 6 includes a wrench seat 601, the upper part of the wrench seat 601 is hinged with a locking wrench 602, and the lower part of the wrench seat 601 is hinged with a cable chuck 604 corresponding to the locking wrench 602. The chuck 604 is provided with an insertion slot 608, and the locking wrench 602 is provided with a drive pin shaft 607, which is parallel to the rotation axis of the locking wrench 602, and the drive pin shaft 607 is arranged transversely through the insertion slot 608, and the drive pin shaft 607 is set corresponding to the inner wall of the insertion groove 608, two locking wrenches 602 are arranged side by side, a connecting block 603 is arranged between the two locking wrenches 602, and a pull wire head 605 that can move back and forth is provided at the front of the wrench seat 601, the pull wire head 605 and the pull wire A pull wire 606 is arranged between the chucks 604 , and a connecting wire is arranged between the pull wire head 605 of the locking wrench 6 and the pull wire head 503 of the locker 5 . The locking wrench 602 drives the driving pin shaft 607 , thereby driving the pull wire chuck 604 to move, so that the pull wire transmits the pulling force to achieve the purpose of controlling the locker 5 .

The chair of the present invention has an adjustable bottom box 4 that can change the space state of the chair, a seat cushion that can move back and forth, a foot rest 7 that can automatically extend and retract, a deformable armrest 10 and a backrest 9 that can be tilted backward. Among them, the arc guide support groove 404 provided on the front and rear movable plates 401b should satisfy H=L×sinα, where L is a fixed value for the distance between the front axle 403 and the rear axle 410 on the front and rear seat 406, and α is the swing angle, and- 5°<α<10°, H is the height of the arc guide support groove 404 compared to the rear axle 410 on the front and rear fixing seats 406 . The arc guide support groove 404 on the front and rear moving plates 401b plays a role in guiding and restricting the movement. In addition, in order to better control and adjust the state of the bottom box 4, a bottom box controller is set up, which has a locking device 5 for locking the moving plate and a locking wrench for controlling the locking device 5. Described locking wrench 6 is installed under the seat cushion through connecting plate, controls the work of locking device 5 by stay wire. The invention realizes the swing and state locking of the chair through the bottom box and the controller, thereby effectively improving the comfort of the chair. The bottom box and the controller can complete the swing of the chair in the front and back directions, and can complete the return and locking of the chair state.

Claims (8)

1. An adjustable comfortable flat-lying leisure chair, comprising a cushion, the left and right sides of the cushion are provided with armrests, the rear side of the cushion is provided with a backrest, it is characterized in that the underside of the cushion is provided with an adjustment bottom box, so The adjustment bottom box includes front and rear fixed seats, front and rear movable seats are installed on the front and rear fixed seats, the front and rear movable seats are connected with the seat cushions, spring seats are installed on the lower side of the front and rear fixed seats, and a Gas spring, the lifting end of the gas spring is connected with the spring seat, the lower end of the gas spring is fixed on the chair base, the adjustment bottom box is provided with a lock corresponding to the front and rear moving seats, and a control adjustment bottom is arranged corresponding to the lock. Box of locking wrench. 2. An adjustable comfortable flat-lying leisure chair according to claim 1, characterized in that, the spring seat includes a mounting base body with an inverted U-shaped cross section, and two parallel fixed shafts are arranged on the mounting base body , the front and rear ends of the fixed shaft pass through the mounting base body longitudinally, and an inverted U-shaped support base is vertically arranged above the mounting base body. The root fixed shaft is fixed corresponding to the extended end; the gas spring includes an external fixed sleeve, the external fixed sleeve is connected with a lifting rod, and the upper end of the lifting rod is provided with an air button, and the lower end of the external fixed sleeve is fixed on the chair base. The upper end of the rod is fixed with the lower side of the mounting base body, and the lower side of the mounting base body is provided with a fixed sleeve set on the outer periphery of the lifting rod. There is a lifting groove running through the mounting base body. The lifting groove includes a circular groove and a lateral groove, and the air button corresponds to Extending into the circular groove for setting, the lifting wrench corresponding to the air button is rotatably connected to the mounting base body, and the lifting wrench is set through the lateral groove. 3. An adjustable comfortable flat-lying leisure chair according to claim 2, characterized in that, the cross-section of the front and rear fixing seats is an inverted U shape, the middle parts of the front and rear fixing seats are fixed on the middle part of the support seat, and the middle parts of the front and rear fixing seats are It is vertically interlaced with the middle part of the support seat, and the front and rear sides of the front and rear fixed seats are provided with two longitudinal extension plates extending outwards. The two extension plates are arranged opposite to each other on the left and right. A front axle and a rear axle are arranged horizontally between the parts respectively, and the left and right ends of the front axle pass through corresponding extension plates outwardly, and roller bearings are set on the extension ends of the front axle, and a roller bearing is installed on the rear axle. Support the connecting plate, the end of the rear shaft is connected to the corresponding extension plate in rotation, the lower part of the supporting connecting plate is equipped with a transverse connecting shaft, and the left and right ends of the connecting shaft protrude outward; the front and rear moving seats include Cushion connecting plate, the lower side of the cushion connecting plate is vertically provided with two left and right opposite front and rear moving plates. Shaped guide support groove, the left and right sides of the front and rear moving plates are provided with flanging around the outer circumference of the guide support groove, and the two roller bearings are respectively arranged in the two guide support grooves, and the lower rear parts of the two front and rear moving plates are aligned with the They are respectively hinged with the left and right ends of the connecting shaft. The connecting shaft passes through the front and rear moving plates vertically. The connecting shaft is provided with an annular limit groove that can accommodate the front and rear moving plates, and the corresponding support seats on the front and rear moving plates are provided with avoidance grooves. 4. An adjustable comfortable flat-lying leisure chair according to claim 3, characterized in that, the front side of the cushion connecting plate is vertically provided with a downwardly extending bending portion, and the bending portion is connected to the two front and rear moving plates. The two sides of the cushion connecting plate are provided with two spaced guide parts. Roller bearings are installed on the guide parts through vertical pin shafts. Two guide grooves are symmetrically distributed on the left and right sides of the spring groove. Two rows of roller bearings are installed in the corresponding guide grooves respectively. The width of the middle groove of the guide groove is larger than that of the upper and lower grooves. There are two sets of elastic buffer assemblies arranged in parallel. The elastic buffer assemblies include two rectangular installation sleeves opposite to each other. A central rod is fixedly connected to the installation sleeve. A spring is arranged between the bottom of the inner wall of the sleeve, and the spring is set on the outer circumference of the two center rods. The two center rods are arranged correspondingly in front and back, the rear center rod is a hollow rod, and the outer diameter of the front center rod matches the inner diameter of the rear hollow rod. The two mounting sleeves at the rear are all fixed with the cushion connecting plate, and the two mounting sleeves in the front are elastically resisted at the spring groove front by the spring, and the two mounting sleeve tops at the rear stretch into the spring groove. 5. An adjustable comfortable flat-lying leisure chair according to any one of claims 1-4, characterized in that the armrest comprises a rod one hinged to the side of the seat cushion, the other end of rod one is hinged to rod two, The other end of the rod two is hinged with the side of the backrest. The back of the backrest is integrally provided with an L-shaped swing plate. The lower side of the rear part of the seat cushion is provided with two corresponding mounting seats. The front part of the swing plate is hinged to the two mounting seats through the first horizontal shaft , Both ends of the rotating shaft are provided with torsion springs. 6. An adjustable comfortable flat-lying leisure chair according to claim 3 or 4, characterized in that, the lower side of the front part of the cushion is hinged with a foot support through the support, and the rear side of the foot support is hinged with two left and right Symmetrical swing rods, two rotating shafts are horizontally arranged between the two swing rods, the second rotating shaft is hinged with two front and rear moving plates, and the two swing rods are respectively located at the outer sides of the two front and rear moving plates. 7. An adjustable comfortable flat-lying leisure chair according to claim 4, wherein the locking device is installed on any front and rear moving plates, and the locking device includes guide sleeves fixedly connected with the front and rear moving plates , the rear end of the guide sleeve is provided with an end cover, and the pull wire head passes through the end cover and extends into the guide sleeve. There is a through hole on the moving plate that can accommodate the guide column lock head to pass through, and a locking groove is provided on the side of the front and rear fixed seats corresponding to the locker. The front end of the guide post lock head matches the locking groove. A backguy connecting the two is provided between them, and a spring is provided in front of the end cover for elastic resistance, and the front end of the spring elastically abuts on the lock head of the guide post, and the front end of the backguy head is located at the inner circumference of the spring. 8. An adjustable comfortable flat-lying leisure chair according to claim 7, wherein a locking wrench is connected to the seat cushion connecting plate, the locking wrench includes a wrench seat, and a locking wrench is hinged on the upper part of the wrench seat. Wrench, the lower part of the wrench seat is hinged with a cable chuck corresponding to the locking wrench. An insertion slot is opened on the cable chuck, and a driving pin is arranged on the locking wrench. The driving pin is parallel to the rotation axis of the locking wrench. It is set horizontally through the insertion slot, and the driving pin shaft is set corresponding to the inner wall of the insertion slot. The front part of the wrench seat is provided with a pull head that can move back and forth. There is a pull wire between the pull wire head and the pull wire chuck. Connecting wires are arranged between the pull wire heads.

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