CN117414030A - Seating and leaning sofa with walk protection pad function - Google Patents

Abstract

The invention discloses a sitting and leaning sofa with a free protection pad function, which comprises a sitting pad frame, a backrest frame, a massage machine core, protection pads, a driving assembly and a limiting structure, wherein the driving assembly comprises a transmission inhaul cable for driving the protection pads to move to the rear side of the backrest frame or cover the massage machine core and a chain wheel for driving the transmission inhaul cable to circularly move, the transmission inhaul cable is arranged along the backrest frame to form a ring shape, the chain wheel is rotatably arranged on the backrest frame, a plurality of caliper grooves are formed by recessing at intervals on the circumference of the chain wheel, calipers for driving the transmission inhaul cable to move and elastic pieces for driving the calipers to extend out of the caliper grooves and tension the transmission inhaul cable are telescopically arranged in each caliper groove, the limiting structure for limiting the calipers to fall down is further arranged in each caliper groove, the limiting structure is used for limiting the protection pads to be locked on the transmission inhaul cable and synchronously moved with the transmission inhaul cable, the protection pads can be adjusted to cover the massage machine core in an electric mode, manual adjustment is not needed, the protection pads are conveniently and can be prevented from falling down or forgetting, and the protection pads are stable in use.

Description

Seating and leaning sofa with walk protection pad function

Technical Field

The invention relates to the technical field of massagers, in particular to a sitting and leaning sofa with a walk-away protection pad function.

Background

In the prior art, a walking massage machine core is arranged on a massage sofa, when the massage sofa is used, the massage machine core can be attached to a human body and then kneaded or beaten for massage, when the massage function is not used, a user can lie on the massage sofa, the massage machine core can also prop against the human body, so that the comfort level of the user is relatively poor when the user lies on the sofa, and a protection pad cover is needed to be arranged on the massage machine core, so that the massage machine core is prevented from being pressed during rest, however, most of protection pads on the market at present are manually adjusted, and the use is limited and inconvenient.

Disclosure of Invention

The purpose of the invention is that: in order to overcome the defects of the prior art, the invention provides a sitting and leaning sofa with a walk-away protection pad function, which aims to prevent the influence of a manipulator on the discomfort of a user jack-up when a user does not need to massage and has to rest on a seat or a sofa, isolate the manipulator through the protection pad, and facilitate the rest effect of the user, and simultaneously can adjust the protection pad to cover a massage machine core in an electric mode, so that the massage machine core does not need to be adjusted manually, is more convenient, can prevent the protection pad from falling or forgetting, and is more stable when in use.

The invention discloses a sitting and leaning sofa with a walk-away protection pad function, which comprises a sitting pad frame, a leaning frame and a massage machine core arranged on the leaning frame, and is characterized in that: the massage device comprises a massage machine core, a seat cushion frame, a transmission rope, a driving assembly, a chain wheel, a plurality of caliper grooves, calipers and limiting structures, wherein the seat cushion frame is arranged on the seat cushion frame, the transmission rope is arranged on the seat cushion frame, the driving assembly is used for driving the protection cushion of the massage machine core to move and is used for driving the protection cushion to move, the driving assembly is used for driving the protection cushion to move and comprises a limiting structure used for limiting the falling of the calipers, the protection cushion is locked on the transmission rope and moves synchronously with the transmission rope, the chain wheel is used for driving the transmission rope to move circularly, the transmission rope is arranged to form a ring shape along the seat cushion frame, the chain wheel is arranged on the seat cushion frame in a rotating mode, and the calipers used for driving the calipers to extend out of the caliper grooves and the elastic parts for tensioning the transmission rope are arranged in a telescopic mode.

By adopting the technical scheme, during adjustment, the calipers can directly or indirectly offset with the transmission inhaul cable due to the elasticity of the elastic element, so that the transmission inhaul cable is tensioned, at the moment, the chain wheel can drive the transmission inhaul cable to move when rotating, and the protection pad can move together due to the fact that the protection pad is locked on the transmission inhaul cable, so that the protection pad can be automatically adjusted, a massage machine core can be covered when the sofa is not used, a user is prevented from being pressed, the protection pad is locked on the transmission inhaul cable and can be prevented from falling or forgetting, two groups of driving components are arranged, the protection pad is arranged between the two transmission inhaul cables, the protection pad is more stable when moving, a physiotherapy effect can be achieved through the physiotherapy cushion, and the practicability is stronger.

Still further, the present invention provides: still include the swing arm and rotate the pivot that sets up on the cushion frame, back frame wears to be equipped with the axis body, the swing arm is including the cover establish in the pivot and can rotate relative to the pivot pivoted rotation end and locate the epaxial wobbling swing end of movable axis body, the sprocket rotates the cover and establishes on the axis body, the swing arm can drive back frame and overturn backward and form anti-bow training frame.

By adopting the technical scheme, when the swing arm rotates relative to the rotating shaft, the shaft body can be driven to swing through the swing arm swing, so that the integral backrest frame is driven to rotate to realize angle adjustment, and the sprocket work can not be influenced when the backrest frame is driven to integrally move, so that the protection pad is adjusted, the integral swing of the backrest frame is not interfered with each other, the structural layout is more reasonable, and the backrest frame can be turned to a back bow state for sit-up training or stretching of the waist.

Still further, the present invention provides: the limiting structure comprises blocking pieces which are arranged on the shaft body and located on the two opposite sides of the chain wheel and used for limiting the side slip of the calipers and an extension rod arranged on the calipers, the extension rod penetrates through one of the blocking pieces to form limiting on the falling-out of the calipers from the notch of the calipers, and the blocking piece is also provided with an avoidance groove for the movable avoidance of the extension rod.

By adopting the technical scheme, the blocking piece can block the left side and the right side of the caliper groove to prevent the caliper from sideslip, and then the extending rod passes through the blocking piece to prevent the caliper from being ejected out of the caliper groove by the elastic piece, so that the caliper is more stable when in use, and the setting avoidance groove can enable the caliper to stretch normally and can not be blocked.

The invention is further provided with: the transmission inhaul cable is characterized in that a plurality of abutting pieces used for being abutted to realize tensioning on the calipers are arranged on the transmission inhaul cable at intervals, a U-shaped guide rail is arranged on the backrest frame, a guide groove is formed in the U-shaped guide rail, the guide groove is a through groove and comprises an inlet end and an outlet end, the calipers on the chain wheel can rotate to be connected with the outlet end, a roller is arranged at the bottom of each abutting piece, a U-shaped abutting surface used for being abutted to the roller is further arranged on the calipers, when the roller rolls out of the guide groove from the outlet end, the elastic piece can drive the U-shaped abutting surface of the calipers to abut against the roller, the U-shaped abutting surface of the calipers is further arranged outside the chain wheel along the circumferential direction and used for limiting the abutting piece to fall down, one end of the abutting piece guide rail is connected with the inlet end, and the other end of the abutting piece guide rail is connected with the outlet end.

By adopting the technical scheme, the transmission inhaul cable can be indirectly tensioned through the cooperation of the abutting part and the calipers, the resistance of the roller on the U-shaped guide rail can be reduced through the cooperation of the roller and the guide groove, and when the roller rolls out of the guide groove from the outlet end, the roller is easy to fall off, so that the mechanism cannot run, and the roller can be prevented from falling down through the abutting part and is arranged on the abutting part guide rail in a penetrating way, so that the roller is more stable in running.

Still further, the present invention provides: the shaft body is provided with spring plate seats, spring plates used for pushing the extension rods outwards are arranged on the spring plate seats along the circumferential direction at intervals, the spring plates are arranged in one-to-one correspondence with the extension rods, each extension rod is provided with a clamping groove, and the spring plates are provided with clamping hooks corresponding to the clamping grooves.

By adopting the technical scheme, the elastic piece and the elastic piece are matched to prevent the caliper from being inclined due to the reset of the elastic piece, so that the caliper is more stable in use and can not be clamped, and the elastic piece can be prevented from being separated from the extension rod through the cooperation of the clamping hook and the clamping groove.

Still further, the present invention provides: the back rest frame is further provided with an extrusion part which is used for extruding the extension rod to enable the calipers to retract into the caliper groove, the extrusion part is arranged in an arc shape and located on the outer side of the extension rod, two tail ends of the extrusion part are respectively provided with an arc-shaped transition section, one transition section corresponds to the inlet end, and the other transition section corresponds to the outlet end.

By adopting the technical scheme, the caliper can be conveniently connected with the roller, so that the caliper is more stable in use.

The invention is further provided with: the rotating shaft is sleeved with a bearing, the rotating end of the swing arm is sleeved on the bearing and synchronously rotates with the outer ring of the bearing, a swing arm driving gear is rotatably arranged on the rotating shaft, and the swing arm driving gear is in linkage fit with the rotating end.

By adopting the technical scheme, the rotating end can rotate relatively, the swing arm driving gear can drive the rotating end to rotate relatively to the rotating shaft when rotating, and at the moment, the swinging end can be driven to swing, so that the backrest frame is driven to swing.

Still further, the present invention provides: the cushion frame is also provided with a gear hole arranged along the swing track of the shaft body, the shaft body is inserted into the gear hole, and the gear hole is provided with a limit switch for limiting the swing angle of the shaft body.

By adopting the technical scheme, the swinging angle of the backrest frame can be limited, and the overlarge rotating angle of the backrest frame can be prevented.

Still further, the present invention provides: the power-off protection structure is arranged on the cushion frame and comprises a gravity sensing switch arranged on the cushion frame and a sensing panel for triggering the gravity sensing switch.

By adopting the technical scheme, when a human body sits on the cushion frame, pressure can be given to the sensing panel, so that the sensing panel triggers the gravity sensing switch, and the circuit of the driving cushion can be disconnected under the control of the circuit board, so that the cushion is safer and more stable in use, and the cushion can be prevented from being damaged due to overlarge resistance during operation.

The invention is further provided with: one of the blocking parts is a gear disc, the gear disc and the chain wheel synchronously rotate, and the rotating shaft can drive the gear disc to rotate through the gear assembly, so that the movable shaft body can be driven to rotate.

By adopting the technical scheme, the structural layout is more reasonable.

Drawings

FIG. 1 is a schematic view of the overall lying structure of the present invention;

FIG. 2 is a schematic view of the overall backrest structure of the present invention;

FIG. 3 is a schematic view showing the structure of the pad of the present invention when it moves to the rear side of the back rest frame;

FIG. 4 is a schematic view of the internal structure of the present invention;

FIG. 5 is a schematic view of the internal structure of the present invention;

FIG. 6 is a diagram showing the assembly of the various components on the sprocket of the present invention;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

FIG. 8 is a perspective view of FIG. 6;

FIG. 9 is a schematic illustration of the caliper of FIG. 8 with a single caliper removed;

FIG. 10 is a schematic view of the caliper of the present invention;

FIG. 11 is a diagram showing the cooperation of the spring plate and the spring plate seat according to the present invention;

FIG. 12 is an enlarged view of portion a of FIG. 3;

FIG. 13 is an enlarged view of part b of FIG. 4;

FIG. 14 is an enlarged view of portion c of FIG. 5;

FIG. 15 is a U-shaped rail of the present invention having an abutment rail;

fig. 16 is a U-shaped rail of the present invention without an abutment rail.

The seat cushion frame 1, the back frame 2, the massage machine core 3, the protection pad 4, the transmission inhaul cable 5, the abutting piece 51, the idler wheel 511, the chain wheel 6, the caliper groove 61, the caliper 7, the U-shaped abutting surface 71, the elastic piece 8, the blocking piece 91, the extension rod 92, the clamping groove 921, the avoidance groove 911, the swing arm 10, the rotating end 101, the swinging end 102, the rotating shaft 20, the shaft body 30, the U-shaped guide rail 40, the guide groove 401, the abutting piece guide rail 402, the elastic piece seat 50, the elastic piece 501, the clamping hooks 5011, 60, the transition section 601, the bearing 70, the swing arm driving gear 80, the gear hole 90, the limit switch 100, the sensing panel 200, the gravity sensing switch 300 and the physiotherapy cushion 400.

Detailed Description

The following detailed description of specific embodiments of the invention refers to the accompanying drawings:

in the description of the present invention, it should be understood that the terms "upper," "lower," "bottom," "top," "front," "rear," "inner," "outer," "left," "right," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The invention discloses a sitting and leaning sofa with a function of a free cushion, which comprises a sitting cushion frame 1, a backrest frame 2 and a massage machine core 3 arranged on the backrest frame 2, wherein the massage machine core 3 walks, which is common knowledge of a person skilled in the art, and not specifically described herein, the invention further comprises a cushion 4 which is free on the backrest frame 2 and is used for covering the massage machine core 3, and a driving component used for driving the cushion 4 to move, wherein the driving component comprises a transmission cable 5 used for driving the cushion 4 to move to the rear side of the backrest frame 2 or covering the massage machine core 3, a chain wheel 6 used for driving the transmission cable 5 to circularly move, the transmission cable 5 is arranged along the backrest frame 2 to form a ring shape, the chain wheel 6 is rotationally arranged on the backrest frame 2, a plurality of caliper grooves 61 are formed by interval recessing on the circumference of the chain wheel 6, the inside of each caliper slot 61 is provided with a caliper 7 for driving the transmission cable 5 to move and an elastic piece 8 (the elastic piece 8 is most preferably a spring, and can also be a shrapnel or the like) for driving the caliper 7 to extend out of the caliper slot 61 and tension the transmission cable 5, and the transmission cable 5 also comprises a limiting structure for limiting the falling of the caliper 7, wherein the protection pad 4 is locked on the transmission cable 5 and synchronously moves with the transmission cable 5, and when the transmission cable 5 is tensioned due to the elasticity of the elastic piece 8, the transmission cable 5 is directly or indirectly propped against the caliper 7 due to the elasticity of the elastic piece 8, at the moment, the sprocket 6 drives the transmission cable 5 to move when rotating, and the protection pad 4 moves together due to the locking of the protection pad 4 on the transmission cable 5, so that the automatic adjustment of the protection pad 4 is realized, the massage machine core 3 can be covered when the sofa is not used, and a user is prevented from being pressed, and lock protection pad 4 on transmission cable 5 and still can prevent that it from dropping or forgetting, still be equipped with physiotherapy cushion 400 on cushion frame 1 (physiotherapy cushion 400 can be adopted thermotherapy or magnetotherapy, and specific structure is the common knowledge of person skilled in the art, and specific details are not just described herein), and physiotherapy cushion activity sets up on cushion frame 1, and the mode of activity of physiotherapy cushion 400 can be unanimous with the protection pad, and specific mode of activity is also not described herein in detail.

Still include swing arm 10 and rotate the pivot 20 that sets up on cushion frame 1, wear to be equipped with axis 30 on the back rest 2, swing arm 10 is including the cover establish on pivot 20 and can rotate relative pivot 20 pivoted rotation end 101 and locate the wobbling swing end 102 of movable axis 30 on the axis 30, sprocket 6 rotates the cover and establishes at axis 30, when swing arm 10 rotates relative pivot 20, can drive axis 30 through swing arm 10 and swing, thereby it realizes the angle modulation to drive holistic back rest 2 to rotate (swing arm 10 concrete control mode can be through the motor individual control), and it still can not influence sprocket 6 work to drive back rest 2 overall movement, make cushion 4 adjust and back rest 2 whole swing mutually noninterfere, structural layout is more reasonable, pivot 20 can be through the motor drive, the concrete mode can be through setting up bevel gear on pivot 20, then set up the gear rather than the looks adaptation on the motor output shaft, or also can through the worm cooperation, the concrete driving mode of pivot belongs to the well known of skilled in the art, just not specifically described in this text, turbine 10 has driven back rest 2 and has formed back rest 2 and has turned over back rest and has been used for training or has been used for the training of the back rest to the back rest.

The limit structure comprises a blocking piece 91 and an extension rod 92, wherein the blocking piece 91 is arranged on the shaft body 30 and positioned on two opposite sides of the chain wheel 6 and used for limiting the sideslip of the caliper 7, the extension rod 92 penetrates through one blocking piece 91 to form limit on the falling-out of the notch of the caliper 7 from the caliper groove 61, an avoidance groove 911 for enabling the extension rod 92 to move and avoid is further formed in the blocking piece 91, the blocking piece 91 can block the left side and the right side of the caliper groove 61 to prevent the caliper 7 from sideslip, then the blocking piece 91 penetrates through the extension rod 92 to prevent the caliper 7 from being ejected out of the caliper groove by the elastic piece 8, so that the caliper 7 is relatively stable in use, and the avoidance groove 911 is arranged to enable the caliper 7 to stretch normally and not to be hindered.

The transmission cable 5 is provided with a plurality of abutting pieces 51 used for abutting on the calipers 7 to realize tensioning at intervals, the backrest frame 2 is provided with a U-shaped guide rail 40, the U-shaped guide rail 40 is provided with a guide groove 401, the guide groove 401 is a through groove and comprises an inlet end and an outlet end, the calipers 7 on the chain wheel 6 can rotate to be connected with the outlet end, rollers 511 are arranged at the bottoms of the abutting pieces 51, the calipers 7 are further provided with U-shaped abutting faces 71 used for abutting the rollers 511, when the rollers 511 roll out of the guide groove 401 from the outlet end, the elastic pieces 8 can drive the U-shaped abutting faces 71 of the calipers 7 to abut the rollers 511, the transmission cable 5 can be indirectly tensioned through the abutting pieces 51 and the calipers 7, the rollers 511 can reduce the resistance of the rollers 511 on the U-shaped guide rail 40 through the cooperation of the rollers 511 and the abutting pieces 51, the chain wheel 6 can be conveniently driven to move through the abutting pieces 51 and the calipers 7, the transmission cable 51 can be prevented from being worn out, and the protection pad 4 can be matched with the seam cable 51 by adopting the abutting pieces 51, and the seam cable 5 can be prevented from being worn.

The mechanism further comprises an abutting piece guide rail 402 which is arranged on the outer side of the chain wheel 6 along the circumferential direction and used for limiting the abutting piece 51 to fall off, one end of the abutting piece guide rail 402 is connected with the inlet end, the other end of the abutting piece guide rail 402 is connected with the outlet end, when the roller 511 rolls out of the guide groove 401 from the outlet end, the abutting piece guide rail 402 is easy to fall off, so that the mechanism cannot operate, the abutting piece guide rail 402 can be prevented from falling down through the abutting piece 51, the abutting piece guide rail 402 is more stable in operation, most preferably, a guide hole is formed in the abutting piece guide rail 402, and the abutting piece 51 is partially positioned in the guide hole and penetrates out of the guide hole, so that the abutting piece can slide in the guide hole in a guiding manner.

The elastic piece seat 50 is arranged on the shaft body 30, the elastic pieces 501 used for pushing the extension rods 92 outwards are arranged on the elastic piece seat 50 along the circumferential direction at intervals, the elastic pieces 501 are arranged in one-to-one correspondence with the extension rods 92, the clamping grooves 921 are formed in the extension rods 92, the elastic pieces 501 are provided with the clamping hooks 5011 corresponding to the clamping grooves 921, the elastic pieces 501 and the elastic pieces 8 are matched to prevent the calipers 7 from being inclined due to the reset of the elastic pieces 8, the calipers 7 are more stable in use and can not be clamped, and the elastic pieces 501 can be prevented from being separated from the extension rods 92 through the matching of the clamping hooks 5011 and the clamping grooves 921.

The back rest 2 is further provided with an extrusion part 60 for extruding the extension rod 92 to enable the calipers 7 to retract into the caliper groove 61, the extrusion part 60 is in an arc shape and is located on the outer side of the extension rod 92, two tail ends of the extrusion part 60 are respectively provided with an arc-shaped transition section 601, one transition section 601 corresponds to the inlet end, the other transition section 601 corresponds to the outlet end, and connection between the calipers 7 and the idler wheels 511 can be facilitated, so that the calipers are more stable in use.

The bearing 70 is sleeved on the rotating shaft 20, the rotating end 101 of the swing arm 10 is sleeved on the bearing 70 and rotates synchronously with the outer ring of the bearing 70, the swing arm driving gear 80 is rotationally arranged on the rotating shaft 20, the swing arm driving gear 80 and the rotating end 101 are in linkage fit (synchronous rotation can be realized through the fit of the grooves and the bumps), the rotating end 101 can rotate relatively, the rotating end 101 can be driven to rotate relatively to the rotating shaft 20 when the swing arm driving gear 80 rotates, at the moment, the swinging end 102 can be driven to swing, and the back rest 2 is driven to swing.

The seat cushion frame 1 is further provided with a gear hole 90 arranged along the swing track of the shaft body 30, the shaft body 30 is inserted into the gear hole 90, the gear hole 90 is provided with a limit switch 100 for limiting the swing angle of the shaft body 30, the swing angle of the backrest frame 2 can be limited, the rotation angle of the backrest frame is prevented from being too large, and the shaft body can generate a clicking sound when moving in the gear hole 90, so that the seat cushion frame is more convenient to adjust and is convenient to control gears.

The drive assembly is provided with two groups, and the protection pad 4 is arranged between the two transmission inhaul cables 5, so that the protection pad 4 is more stable in moving.

One of the blocking pieces 91 is a gear disc, the gear disc and the sprocket 6 synchronously rotate, the rotating shaft 20 can drive the gear disc to rotate through gears, so that the sprocket 6 is driven to rotate, the sprocket of the physiotherapy cushion 400 can be assembled on the rotating shaft 20, synchronous sliding adjustment of the physiotherapy cushion 400 and the protection cushion 4 is realized, motor control is not needed, and the structural layout is more reasonable.

The cushion frame 1 is provided with a power-off protection structure, which comprises a gravity sensing switch 300 arranged on the cushion frame 1 and a sensing panel 200 for triggering the gravity sensing switch 300, the cushion frame 1 is also provided with a driving sensing panel 200, when a human body sits on the cushion frame 1, the sensing panel 200 can be pressed, so that the sensing panel 200 triggers the gravity sensing switch 300, the circuit for driving the protection pad 4 can be disconnected through the control of a circuit board (the specific control mode of the circuit board belongs to the common knowledge of the person skilled in the art and does not relate to innovation on the program), the protection pad is safer and more stable when in use, the protection pad is prevented from being damaged due to overlarge resistance when in operation, the sensing panel 200 can also be elastically reset by adopting a spring bracket, the gravity sensing switch 300 can be directly purchased from the market, the protection pad is not specifically described in detail, and the gravity sensing switch 300 is triggered when the gravity is more than 5KG in the most preferred.

In summary, the purpose is that the user does not need to massage and rest on the sofa, in order to avoid the influence of the mechanical arm on the discomfort of the user's top support, to isolate the mechanical arm through the protection pad, and to facilitate the rest effect of the user, and in order to further facilitate the rest of the user, the sofa is further provided with the physiotherapy cushion 400 to assist with the functions of thermal therapy, magnetic therapy, and the like.

Claims (10)

1. The utility model provides a sit and lean on sofa with walk protection pad function, includes cushion frame (1), back frame (2) and locates massage core (3) on back frame (2), its characterized in that: still including wandering to lean on and be used for covering protection pad (4) of massage core (3) and be used for driving the drive assembly of protection pad (4) activity on frame (2) of leaning on, drive assembly is including being used for driving protection pad (4) and remove to lean on frame (2) rear side or cover transmission cable (5) on massage core (4), be used for driving transmission cable (5) cyclic motion sprocket (6), transmission cable (5) set up along leaning on frame (2) and form the annular, sprocket (6) rotate and set up on leaning on frame (2), and the circumference of sprocket (6) go up the interval and recess to form a plurality of calliper grooves (61), all flexible be provided with in each calliper groove (61) are used for driving calliper (7) of transmission cable (5) motion and are stretched out calliper groove (61) and are used for driving the elastic component (8) of transmission cable (5) tensioning, still including being used for restricting the limit structure that calliper (7) drops, protection pad (4) lock on transmission cable (5) and rather than synchronous motion, cushion (1) are equipped with cushion (400) on frame (1) and set up physiotherapy cushion (400) on the cushion frame.

2. The sofa of claim 1 having a walk-through cushion function, wherein: still include swing arm (10) and rotate pivot (20) of setting on cushion frame (1), wear to be equipped with axis (30) on back frame (2), swing arm (10) are including cover establish on pivot (20) and can relative pivot (20) pivoted rotation end (101) and locate on axis (30) can drive axis (30) wobbling swing end (102), sprocket (6) rotate the cover and establish on axis (30), swing arm (10) can drive back frame (2) and overturn backward and form the anti-bow training frame.

3. A seating sofa with a walk-through cushion function according to claim 2, characterized in that: the limiting structure comprises a blocking piece (91) which is arranged on the shaft body (30) and positioned on two opposite sides of the chain wheel (6) and used for limiting the side slipping of the calipers (7) and an extension rod (92) which is arranged on the calipers (7), wherein the extension rod (92) penetrates through one blocking piece (91) to form limiting to the falling-out of the notch of the calipers (7) from the slot (61) of the calipers, and the blocking piece (91) is also provided with an avoidance slot (911) for the movable avoidance of the extension rod (92).

4. A sitting and leaning sofa with a walk-around cushion function according to claim 1 or 2 or 3, characterized in that: the transmission cable (5) is provided with a plurality of butt spare (51) that are used for the butt to realize tensioning on calliper (7) at the interval, is provided with U-shaped guide rail (40) on back frame (2), is equipped with guide way (401) on U-shaped guide rail (40), and guide way (401) are logical groove, and it includes entrance point and exit end, calliper (7) on sprocket (6) can rotate to linking with the exit end, butt spare (51) bottom is equipped with gyro wheel (511), still be equipped with on calliper (7) be used for with U-shaped butt face (71) of gyro wheel (511) butt, when gyro wheel (511) roll out the guide way from the exit end, U-shaped butt face (71) and gyro wheel (511) of elastic component (8) drivable calliper (7) are offset, still include along circumferencial direction setting in sprocket (6) outside be used for restricting butt spare guide rail (402) that butt spare (51) is inclined, butt spare guide rail (402) its one end links up with the entrance point, and the other end links up with the exit end.

5. A seating sofa with a walk-through cushion function as claimed in claim 3, wherein: the novel elastic piece is characterized in that an elastic piece seat (50) is arranged on the shaft body (30), elastic pieces (501) used for pushing the extension rods (92) outwards are arranged on the elastic piece seat (50) along the circumferential direction at intervals, the elastic pieces (501) and the extension rods (92) are arranged in one-to-one correspondence, clamping grooves (921) are formed in the extension rods (92), and clamping hooks (5011) corresponding to the clamping grooves (921) are arranged on the elastic pieces (501).

6. A seating sofa with a walk-through cushion function according to claim 3 or 5, characterized in that: the back rest frame (2) is further provided with an extrusion part (60) used for extruding the extension rod (92) to enable the calipers (7) to retract into the caliper groove (61), the extrusion part (60) is in an arc-shaped arrangement and located on the outer side of the extension rod (92), two tail ends of the extrusion part (60) are respectively provided with an arc-shaped transition section (601), one transition section (601) corresponds to the inlet end, and the other transition section (601) corresponds to the outlet end.

7. The sofa of claim 6, wherein the cushion comprises: the rotating shaft (20) is sleeved with a bearing (70), a rotating end (101) of the swing arm (10) is sleeved on the bearing (70) and rotates synchronously with an outer ring of the bearing (70), a swing arm driving gear (80) is rotatably arranged on the rotating shaft (20), and the swing arm driving gear (80) is in linkage fit with the rotating end (101).

8. The sofa of claim 6, wherein the cushion comprises: the seat cushion frame (1) is also provided with a gear hole (90) arranged along the swing track of the shaft body (30), the shaft body (30) is inserted into the gear hole (90), and the gear hole (90) is provided with a limit switch (100) for limiting the swing angle of the shaft body (30).

9. The sofa of claim 4, wherein the cushion comprises: the power-off protection structure is arranged on the cushion frame (1) and comprises a gravity sensing switch (300) arranged on the cushion frame (1) and a sensing panel (200) for triggering the gravity sensing switch (300).

10. The sofa of claim 7, wherein the cushion comprises: one of the blocking pieces (91) is a gear disc, the gear disc and the chain wheel (6) synchronously rotate, and the rotating shaft (20) can drive the gear disc to rotate through the gear assembly, so that the chain wheel (6) can be driven to rotate.