CN104095422A - Functionally comfortable chair with extendable cushion and backrest - Google Patents

Abstract

The invention discloses a functional comfortable chair with a retractable seat cushion and a backrest, which increases the comfort of the reclining chair. The invention comprises a base, a sofa seat cushion, a sofa backrest, and a sofa headrest. The sofa headrest is provided with a headrest steel frame, the back of the sofa backrest is provided with a backrest steel frame, and the middle part of the top connecting rod of the backrest steel frame is provided with a movable steel frame for the headrest. , the connecting end of the steel frame of the head cushion is set on the movable steel frame of the head cushion, and the bottom of the steel frame of the backrest is hinged to the steel frame of the seat cushion through screws. The middle part of the connecting rod on the top of the back frame is provided with a movable steel frame for the headrest. The present invention can provide the movable reclining chair with armrests to be used together with the footstool, the frame is on the ideal central position of the user's feet and the backrest, and the seat cushion and the movable backrest are all controlled by the adjusting device.

Description

Functional comfortable chair with retractable seat and backrest

technical field

The invention relates to a reclining chair, in particular to a movable functional comfortable chair, which is a functional comfortable chair with retractable seat cushion and backrest.

Background technique

Recliners are widely used furniture in people's daily life, and people often like to have a rest on the recliners and relax their bodies. Most of the existing deck chairs are fixed, and the deck chairs can only make people feel comfortable lying down, and it is inconvenient to adjust. There is also an adjustable type, and the backrest angle adjustment adopts a sawtooth-shaped adjustment fixed piece fixed below the armrest, which is a series of multi-gear adjustments, but its adjustment is inconvenient and its function is relatively single. There are also folding recliners that use iron pipes to bend into a skeleton. The backrest angle adjustment device includes a sliding sleeve fixed under the armrest, and upper sliding pipes whose two ends are respectively connected to the backrest and chair legs. The sliding pipe is installed in the sliding sleeve. There is a locking device such as a hoop on the cover to lock the sliding tube to achieve the purpose of locking the angle of the backrest. This device is for stepless adjustment of any position. However, there are many steps in the operation of the existing device, which is laborious and inconvenient to use.

Contents of the invention

Based on this, it is necessary to address the existing technical problems, provide a functional comfortable chair with retractable cushion and backrest, and propose a reclining chair that can fully enjoy leisure time, increase the comfort of the reclining chair, and is easy to adjust and convenient to use.

In order to solve the problems of the prior art, the present invention adopts the following technical solutions:

A functional comfortable chair with a retractable cushion and backrest, comprising a base, a sofa cushion, a sofa backrest, and a sofa head cushion, a sofa cushion is arranged above the base, sofa armrests are arranged on both sides of the sofa cushion, and There is a sofa back, and the top of the sofa back is provided with a sofa head cushion, which is characterized in that the sofa head cushion is provided with a steel frame for the head cushion, the back of the sofa back is provided with a steel frame for the backrest, and the middle part of the connecting rod on the top of the steel frame for the backrest is provided with a headrest The movable steel frame, the connecting end of the headrest steel frame is set on the headrest movable steel frame, the bottom of the backrest steel frame is hinged with the seat cushion steel frame through screws, and the backrest steel frame consists of an upper back frame, an arc-shaped support rod, and a lower back frame. Composition, the upper back frame and the lower back frame are connected by arc-shaped support rods, the upper back frame and the lower back frame are sleeved at both ends of the arc-shaped support rods, the middle part of the top connecting rod of the upper back frame is equipped with a movable steel frame for the head cushion, and the lower back frame The bottom end of the frame is hinged to the steel frame of the seat cushion by screws.

In some embodiments, the upper back frame on the upper part of the backrest steel frame is connected to the top end of the adjustment bracket, the bottom end of the adjustment bracket is hinged to the handrail connecting rod through the movable frame, and the adjustment bracket is composed of a telescopic rod sleeve, a bracket rod, a telescopic rod, and a movable frame. The lower part of the telescopic rod is placed in the telescopic rod sleeve, the top of the telescopic rod is hinged to the lower part of the upper back frame, the bottom of the telescopic rod sleeve is provided with a movable frame, and the backrest steel frame is provided with a bracket rod, which is L-shaped. The outer wall of the backrest steel frame, the long rod of the bracket rod is parallel to the backrest steel frame, the short rod of the bracket rod is perpendicular to the backrest steel frame facing the telescopic rod, the upper part of the telescopic rod is provided with a sliding groove, the end of the short rod of the bracket rod is located in the sliding groove of the telescopic rod, The pull rod limits the displacement distance of the telescopic pull rod. When the telescopic pull rod stretches up and down, it drives the upper back frame to slide on the arc-shaped support rod, forming a swing between the upper back frame and the movable steel frame of the headrest, thereby adjusting the distance between the steel frame of the headrest and the backrest of the sofa. angle between.

In some embodiments, the base is provided with a disc rotating track, and the base is provided with an upright support foot, which is Y-shaped, and the upper part of the support foot is divided into front and rear branches, and the front branch of the support foot is provided with a U-shaped adjustment track, there is a cushion sponge under the sofa seat cushion, a cushion steel frame is arranged on the seat cushion sponge, and an adjustment handle is arranged on the outside of the seat cushion steel frame. The adjustment handle is composed of a fixed wheel and a locking wheel. The fixing of the adjustment handle The "I"-shaped chute is formed between the wheel and the locking wheel, and the "I"-shaped chute between the fixed wheel and the locking wheel of the adjustment handle is inserted into the adjustment track of the bracket foot, and the steel frame of the seat cushion is adjusted by the adjustment handle. Adjust the position in the track.

In some embodiments, the movable frame is connected to the armrest connecting rod, and the armrest connecting rod is provided with an armrest steel frame, and the armrest steel frame is covered with a sofa armrest.

In some embodiments, several back springs are arranged between the back steel frames in the transverse direction, and the back steel frames and the back springs are connected by spring fixing belts.

In some embodiments, the bottom end of the backrest steel frame is hinged to the rear end of the seat cushion steel frame, the adjustment handle on the seat cushion steel frame is snapped into the adjustment track of the bracket foot, and the middle part of the lower back frame of the backrest steel frame is hinged through a movable frame The armrest connecting rod, when the adjustment handle slides in the adjustment track, drives the seat cushion steel frame to move forward and backward, and the seat cushion steel frame links with the backrest steel frame to swing with the movable frame as the axis, thereby adjusting the angle between the sofa backrest and the sofa seat cushion .

In some embodiments, the lower back frame is provided with an installation groove, and the inner side of the armrest connecting rod is provided with a plastic collar, and the armrest connecting rod is snapped into the installation groove on the lower back frame through the plastic collar.

In some embodiments, a track fixing clip is provided on the bottom surface of the base, and the upper part of the "I"-shaped disc rotating track snaps into the track fixing clip.

The present invention can provide a recliner with armrests for use with a footstool, which includes a retractable seat cushion and backrest. The recliner consists of a frame that is ideally centered between the user's feet and the backrest, providing separate and independent pivots for the backrest and armrests. The back rest fits over the armrests, with pivots extending rearward. The seat cushion is installed at the forward position of the frame, suspended and connected to the armrest; by operating the adjustment device on the armrest, the seat cushion can move within a radius smaller than the backrest. The sofa head cushion includes a vertically adjustable movable bracket for the head (see explanation figure 2), which can be adjusted to a suitable position at the back of the neck (the back of the head) to make the head more comfortable. The movable support of the head can be adjusted by manually adjusting the handles on either side of the sofa headrest. The seat cushion and the movable backrest are controlled by the adjustment device (see explanation figure 3), the adjustment device includes the movable bracket device and the locking adjustment handle (see explanation figure 10), and the theory of changing the longest side by using the principle of the best triangular support force Realize backrest, the change of the activity of seat cushion and angle, rely on the groove of locking adjustment handle fixed wheel to hug the adjustment track of bracket foot to realize (explain see Fig. 10). It must therefore be actuated by unlocking the corresponding locking adjustment handle on the foot of the chair frame.

The reclining chair of the present invention has stable structure, adjustable backrest angle and convenient use.

Description of drawings

Fig. 1 is the assembly structure schematic diagram of the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of a movable support device for adjusting the head of a sofa according to an embodiment of the present invention;

Figure 2a is a schematic side view of Figure 2;

Fig. 3 is a schematic diagram of an adjusting device and a movable support device according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of the internal structure of the sofa backrest according to an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a connecting device between a sofa backrest and a sofa armrest according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of the assembly of the sofa backrest and the sofa seat cushion according to the embodiment of the present invention;

Fig. 7 is a schematic diagram of assembling the sofa backrest and sofa armrest according to the embodiment of the present invention;

Fig. 8 is a schematic diagram of the assembly of the sofa seat cushion, the adjustment handle and the armrest according to the embodiment of the present invention;

Fig. 8a is a schematic cross-sectional view of AA of Fig. 8;

Fig. 9 is a schematic diagram of the movable structure of the sofa seat disk according to the embodiment of the present invention;

Fig. 10 is a schematic diagram of the movable and fixed structure of the sofa backrest according to the embodiment of the present invention.

The reference signs are explained as follows:

Disc rotation track 1, base 2, bracket feet 3, sofa seat cushion 4, sofa armrest 5, sofa backrest 6, sofa head cushion 7, head cushion steel frame 8, backrest steel frame 9, adjustment bracket 10, spring fixing belt 11 , back spring 12, adjustment handle 14, adjustment track 15, seat cushion steel frame 16, seat cushion sponge 17, telescopic rod cover 18, screw 19, bracket rod 20, armrest steel frame 21, head cushion movable steel frame 31, telescopic rod 32, movable frame 33, slide groove 34, plastics collar 35, handrail connecting rod 36, track clamp 38, upper back frame 91, arc support bar 92, lower back frame 93.

Detailed ways

In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

At first, accompanying drawing 1 is the schematic diagram of a specific embodiment, a kind of functional comfortable chair of retractable cushion and backrest, comprises sofa backrest and movable support device (referring to accompanying drawing 3,4,5,6), on the left and right sides of seat cushion The side is equipped with a locking adjustment handle 14 (see accompanying drawing 10); a sofa head cushion and a movable support including an adjustable head (see accompanying drawing 2); the base and the disc rotation track (see accompanying drawing 9) can rotate more than 360 degrees to the desired position.

The present invention comprises a base 2, a sofa cushion 4, a sofa backrest 6, and a sofa head cushion 7. A sofa cushion 4 is arranged above the base 2, sofa armrests 5 are arranged on both sides of the sofa cushion 4, and a The sofa backrest 6 is provided with a sofa head pad 7 on the top of the sofa backrest 6, and the disc rotating track 1 is arranged below the base 2, and an upright bracket foot 3 is arranged on the base 2, and the bracket foot 3 is Y-shaped, and the upper part of the bracket foot 3 is Front and rear branches, U-shaped adjustment track 15 is provided on the front branch of bracket foot 3, seat cushion sponge 17 is arranged under sofa seat cushion 4, seat cushion steel frame 16 is arranged on seat cushion sponge 17, seat cushion steel frame 16 Adjusting handle 14 is arranged on the outside, and adjusting handle 14 is made up of fixed wheel and locking wheel, and " I " font chute is formed between the fixed wheel of adjusting handle 14 and locking wheel, and the " " between adjusting handle 14 fixing wheel and locking wheel The "I"-shaped chute snaps into the adjustment track 15 of the bracket foot 3, and the position of the seat cushion steel frame 16 in the adjustment track 15 is adjusted by the adjustment handle 14.

In one embodiment, the sofa headrest 7 is provided with a headrest steel frame 8, the back of the sofa back 6 is provided with a backrest steel frame 9, and the middle part of the top connecting rod of the backrest steel frame 9 is provided with a headrest movable steel frame 31. The connecting end of frame 8 is sleeved on the movable steel frame 31 of the headrest, and the bottom end of the backrest steel frame 9 is hinged to the seat cushion steel frame 16 by screws 19, and the backrest steel frame 9 is composed of an upper back frame 91, an arc support rod 92, and a lower backrest. The upper back frame 91 and the lower back frame 93 are connected by an arc-shaped support rod 92, the upper back frame 91 and the lower back frame 93 are set on the two ends of the arc-shaped support rod 92, and the middle part of the top link of the upper back frame 91 A movable steel frame 31 is provided for the head cushion, and the bottom end of the lower back frame 93 is hinged to the seat cushion steel frame 16 by screws 19 .

Backrest steel frame 9 tops (upper back frame 91) hinge adjustment bracket 10 tops, adjustment bracket 10 bottom ends are articulated armrest connecting rod 36 by movable frame 33, adjustment bracket 10 is made of telescopic pull rod cover 18, support pull rod 20, telescopic pull rod 32, movable Frame 33 is formed, telescopic pull rod 32 lower parts are placed in telescopic pull rod cover 18, telescopic pull rod 32 tops are hinged upper back frame 91 bottoms, telescopic pull rod cover 18 bottoms are provided with movable frame 33, backrest steel frame 9 is provided with support pull rod 20 , the support rod 20 is L-shaped, the long rod of the support rod 20 is located on the outer wall of the backrest steel frame 9, the long rod of the support rod 20 is parallel to the backrest steel frame 9, and the short rod of the support rod 20 is perpendicular to the backrest steel frame 9 towards the telescopic pull rod 32, and the telescopic pull rod 32 The upper part is provided with a sliding groove 34, and the end of the short rod of the support rod 20 is located in the sliding groove 34 of the telescopic rod 32. The distance between the displacement of the telescopic rod 32 is limited by the bracket rod 20. Slide on the shaped support rod 92 to form the swing of the upper back frame 91 and the movable steel frame 31 of the headrest, thereby adjusting the angle between the steel frame 8 of the headrest and the sofa back 6.

In one embodiment, the movable frame 33 is connected to the armrest connecting rod 36, the armrest steel frame 21 is arranged on the armrest connecting rod 36, and the armrest steel frame 21 covers the sofa armrest 5; a number of backrest springs are arranged between the backrest steel frame 9 horizontally 12. The backrest steel frame 9 and the backrest spring 12 are connected by a spring fixing belt 11 .

Referring to accompanying drawing 3, backrest steel frame 9 bottoms are hinged seat cushion steel frame 16 tail ends, and the adjustment handle 14 on the seat cushion steel frame 16 snaps in the adjustment track 15 of support foot 3, and backrest steel frame 9 middle parts (lower back frame 93 middle part) through the movable frame 33 hinged armrest connecting rod 36, when the adjustment handle 14 slides in the adjustment track 15, it drives the seat cushion steel frame 16 to move forward and backward, and the seat cushion steel frame 16 links the backrest steel frame 9 with the movable frame 33 as the axis swing, thereby adjusting the angle between the sofa back 6 and the sofa seat cushion 4.

The lower back frame 93 is provided with an installation groove, and the inner side of the armrest connecting rod 36 is provided with a plastic collar 35 , and the armrest connecting rod 36 snaps into the installation groove on the lower back frame 93 through the plastic collar 35 .

In one embodiment, a track fixing clip 38 is provided on the bottom surface of the base 2 , and the upper part of the "I"-shaped disc rotating track 1 snaps into the track fixing clip 38 .

See attached drawing 1 assembly structure diagram, including recliner movable device: disc rotating track 1, base 2; backrest cushion and movable support device: sofa seat cushion 4, sofa armrest 5, sofa backrest 6, sofa headrest 7, headrest steel Frame 8, backrest steel frame 9, adjustment bracket 10, adjustment handle 14, seat cushion steel frame 16; Show the general internal structure.

Referring to accompanying drawing 2, the structural diagram of the movable support device for adjusting the head of the sofa is realized by the headrest steel frame 8, the movable steel frame 31 of the headrest, the support rod 20, the telescopic rod 32, and the telescopic rod cover 18. When the position of the headrest needs to be adjusted, Can pull head pad, utilize the semicircle pipe circular motion of head pad movable steel frame 31, the up and down telescopic linkage of telescopic pull rod 32 reaches, and support pull bar 20 plays head pad and is adjusted to the control effect of highest point and lowest point.

Referring to accompanying drawing 3, adjusting device comprises movable support device (seeing accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6) and locking adjustment handle 14 (seeing accompanying drawing 10), utilize the principle of triangular support strength best, Change the theory of the longest side to realize the change of the sofa backrest 6, the movement and angle of the sofa seat cushion 4, and realize by relying on the groove of the locking adjustment handle 14 fixed wheel to hold the adjustment track 15 of the bracket foot 3 (see accompanying drawing 10) .

Referring to accompanying drawing 4 sofa back internal structure schematic diagram, movable chair is carried out internal decomposition, sofa seat cushion 4 and sofa backrest 6 are in the upright position, and sofa head cushion 7 (headrest) is in stretched state. Explained, sofa seat cushion 4, sofa backrest 6 are in active state, and the functional structure of sofa head cushion 7 full contraction is shown. Mainly reflected in two aspects: the one is by adjusting bracket 10, movable frame 33, the sofa cushion 4 that bracket pull bar 20 forms, sofa backrest 6 (backrest) are in movable function, when consumer adjusts the position backward, can rely on bracket The telescopic pull rod 32 inside can be realized, and the position of the bottom limit can be controlled by the bracket pull rod 20, without losing the safe support; the second is the movable shaft core composed of the armrest steel frame 21 and the movable frame 33 to achieve the backrest rotation activity. Function;

Referring to accompanying drawing 5, the structural diagram of the connecting device between the sofa backrest and the sofa armrest shows the structural safety of the sofa armrest steel frame 21 and the sofa backrest 6. The movable function of the backrest depends on the telescopic pull rod 32 and the telescopic pull rod cover 18 and is connected with the movable frame 33. Rotate to realize, can be controlled the highest point and the lowest point by support rod 20 and guarantee certain scope of motion; The connecting rod 36 device one end oblique taper convex head of sofa armrest steel frame 21, the design of one end tapered oblique taper concave head can Make it tighter after connecting each other.

See attached drawing 6 for the assembly diagram of sofa backrest and sofa seat cushion, assembly instructions:

1. Insert the sofa seat cushion 4 into the installation hole of the sofa back steel frame 9;

2. Take out the screw 19 in the parts package and align the wrench with the installation hole to hold the two parts and make them move with each other.

See attached drawing 7 for the assembly diagram of sofa backrest and sofa armrest, assembly instructions:

1. Align the plastic collar 35 with the connecting rod 36 of the sofa armrest;

2. Press and hold the leather of the sofa back 6 until the connecting bolts are exposed, align the sofa armrest 5 with the installation groove of the sofa back 6 connecting bolts and insert downward;

3. Rotate the plastic collar 35 after it is in place so that the connecting rod 36 is not exposed.

See accompanying drawing 8, the sofa seat cushion 4 and the adjustment handle 14, the schematic diagram of armrest assembly, according to the principle of the best triangular support strength, change the theory of the longest side to realize the backrest, the change of the movement and angle of the sofa seat cushion 4, rely on locking The groove of the fixed wheel of the adjustment handle 14 hugs the adjustment track 15 of the bracket foot 3 to realize it. The design of the adjustment track 15 is determined according to the moving track of the change of the long side. Assembly instructions:

1. Put the adjustment handle 14 of the sofa seat cushion 4 (the adjustment handle 14 is provided on the steel frame 16 of the seat cushion) into the movable groove 37 of the bracket foot 3;

2. Align the connecting rod 36 of the sofa armrest 5 with the installation hole on the top of the bracket foot 3, and lock the sofa armrest connecting rod 36 with the connecting bolt.

Referring to the schematic diagram of the movable structure of the sofa seat disc in accompanying drawing 9, it is illustrated that the track fixing clips 38 are fixedly installed on the sofa base 2, and are evenly distributed on the circumference. The disc rotating track 1 is stuck in the track fixing clips 38, and can Move toward the draw-in groove circle of rail fixing clamp 38.

Refer to Figure 10 for a schematic diagram of the movable and fixed structure of the sofa backrest, which illustrates that the function of moving the sofa backrest to any position within the adjustment range is realized by locking the adjustment handle, and the adjustment track 15 of the bracket foot 3 is held tightly by the groove of the fixed wheel Increase its friction to achieve locking.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (8)

1. A functional comfortable chair with retractable cushion and backrest, comprising: base (2), sofa seat cushion (4), sofa backrest (6), sofa headrest (7), above the base (2) is provided with A sofa seat cushion (4), sofa armrests (5) are provided on both sides of the sofa seat cushion (4), a sofa backrest (6) is provided at the tail end of the sofa seat cushion (4), and the sofa backrest (6) The top is provided with a sofa headrest (7), and it is characterized in that, a headrest steel frame (8) is provided in the sofa headrest (7), and a backrest steel frame (9) is provided at the back of the sofa backrest (6), The middle part of the top connecting rod of the backrest steel frame (9) is provided with a headrest movable steel frame (31), and the connecting end of the headrest steel frame (8) is sleeved on the headrest movable steel frame (31). The bottom end of the backrest steel frame (9) is hinged to the seat cushion steel frame (16) by screws (19). 93), the upper back frame (91) and the lower back frame (93) are connected by arc support rods (92), and the upper back frame (91) and the lower back frame (93) are sleeved on the arc support At both ends of the rod (92), the middle part of the top connecting rod of the upper back frame (91) is provided with a movable steel frame (31) for the head cushion, and the bottom end of the lower back frame (93) is hinged to the seat cushion steel frame by screws (19) (16). 2. The functional comfort chair of a retractable cushion and a backrest according to claim 1, wherein the upper back frame (91) on the top of the backrest steel frame (9) is connected to the top of the adjustment bracket (10), and the adjustment The bottom end of the support (10) is hinged to the armrest connecting rod (36) by a movable frame (33), and the adjustment support (10) is composed of a telescopic pull rod cover (18), a support pull rod (20), a telescopic pull rod (32), a movable frame ( 33), the lower part of the telescopic pull rod (32) is placed in the telescopic pull rod sleeve (18), the top end of the telescopic pull rod (32) is hinged to the lower part of the upper back frame (91), and the bottom end of the telescopic pull rod sleeve (18) A movable frame (33) is provided, and the backrest steel frame (9) is provided with a support rod (20), and the support rod (20) is L-shaped, and the long rod of the support rod (20) is positioned at the backrest steel frame ( 9) the outer wall, the long rod of the support pull rod (20) is parallel to the backrest steel frame (9), the short rod of the support pull rod (20) is vertical to the backrest steel frame (9) towards the telescopic pull rod (32), and the telescopic pull rod ( 32) The upper part is provided with a sliding groove (34), and the short rod end of the support pull rod (20) is located in the sliding groove (34) of the telescopic pull rod (32). 3. The functional comfort chair with retractable cushion and backrest according to claim 1, characterized in that, a disc rotating track (1) is provided under the base (2), and an upright seat is provided on the base (2). The support foot (3), the support foot (3) is Y-shaped, the upper part of the support foot (3) is divided into front and rear branches, and a U-shaped adjustment track is opened on the front branch of the support foot (3) (15), described sofa cushion (4) is provided with cushion sponge (17) below, and described cushion sponge (17) is provided with cushion steel frame (16), and described cushion steel frame (16) An adjustment handle (14) is provided on the outside, and the adjustment handle (14) is composed of a fixed wheel and a locking wheel. An "I"-shaped chute is formed between the fixed wheel and the locking wheel of the adjustment handle (14). The "I"-shaped chute between the fixed wheel and the locking wheel of the adjustment handle (14) snaps into the adjustment track (15) of the bracket foot (3), and the seat cushion steel frame (16) is adjusted through the adjustment handle (14). ) in the adjustment track (15). 4. The functional comfort chair with retractable cushion and backrest according to claim 2, characterized in that, the movable frame (33) is connected to the armrest connecting rod (36), and the armrest connecting rod (36) is provided with an armrest A steel frame (21), the armrest steel frame (21) covers the sofa armrest (5). 5. The functional comfort chair of a retractable cushion and a backrest according to claim 1, characterized in that, several backrest springs (12) are arranged between the said backrest steel frame (9) horizontally, and said backrest steel frame (9) ) and the backrest spring (12) are connected by a spring fixing band (11). 6. The functional comfort chair with retractable cushion and backrest according to claim 3, characterized in that, the bottom end of the backrest steel frame (9) is hinged to the tail end of the seat cushion steel frame (16), and the seat cushion steel frame The adjustment handle (14) on (16) snaps into the adjustment track (15) of the bracket foot (3), and the middle part of the lower back frame (93) of the backrest steel frame (9) is connected by the hinged handrail of the movable frame (33) Rod (36). 7. The functional comfort chair with retractable cushion and backrest according to claim 1, characterized in that, the lower back frame (93) is provided with a mounting groove, and the inner side of the armrest connecting rod (36) is provided with a plastic sleeve ring (35), and the armrest connecting rod (36) is snapped into the installation groove on the lower back frame (93) through the plastic collar (35). 8. The functional comfort chair with retractable cushion and backrest according to claim 1, characterized in that, the bottom surface of the base (2) is provided with a track fixing clip (38), and the "worker" type disc rotating track (1 ) is snapped into the track clamp (38).