CN109393827B

CN109393827B - Sofa with adjustable backrest position

Info

Publication number: CN109393827B
Application number: CN201811584323.4A
Authority: CN
Inventors: 乔印军
Original assignee: Beijing Furton Furniture Co ltd
Current assignee: Beijing Furton Furniture Co ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-12-08
Anticipated expiration: 2038-12-24
Also published as: CN109393827A

Abstract

The invention relates to a sofa with an adjustable backrest, which comprises a seat frame, a backrest, seat cushions and armrests, wherein the armrests are arranged on two sides of the seat frame, the seat cushions are placed on the upper surface of the seat frame, the backrest is positioned on the seat cushions, the two sides of the backrest are fixedly provided with moving frames, the armrests are provided with sliding grooves along the width direction of the seat cushions, the sliding grooves comprise two U-shaped grooves, the openings of the two U-shaped grooves are horizontally arranged oppositely, the moving frames are positioned between the two U-shaped grooves, the two sides of the moving frames are provided with idler wheels, the idler wheels are rotatably supported on the moving frames, the idler wheels are positioned in the U-shaped grooves, the axes of the idler wheels are horizontal and vertical to the length direction of the. The invention has the effect of convenient backrest adjustment.

Description

Sofa with adjustable backrest position

Technical Field

The invention relates to the technical field of sofas, in particular to a sofa with an adjustable backrest.

Background

The seat depth (i.e., the distance of the back rest relative to the front edge of the sofa) of a sofa that is preferred or appropriate varies as each individual's body shape varies and as each individual is accustomed to a different angle. The seat depth of conventional sofas is not adjustable. In the case of a sofa with an adjustable seat depth, a person with an excessively large or small body size may experience significant discomfort while sitting or lying on his/her back.

Patent document No. CN104223832B discloses a sofa with an adjustable backrest position, which includes a seat frame, a backrest frame, and a guide rail frame, wherein the guide rail frame includes a guide rail extending along the front-back direction of the sofa, the guide rail is fixed in the middle of the seat frame, the backrest frame is connected in the guide rail frame, and the backrest frame moves horizontally along the length direction of the guide rail to adjust the position of the backrest.

However, in such a structure, the sofa cushion affects the movement of the rail frame after the sofa cushion is placed on the seat frame, so that the adjustment of the backrest is inconvenient.

Disclosure of Invention

The invention aims to provide a sofa with an adjustable backrest, which has the effect of more convenient backrest adjustment.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a sofa of back adjustable position, includes seat frame, back, seatpad and handrail, and the handrail is installed in the both sides of seat frame, and the seatpad is placed on the upper surface of seat frame, and the back is located the seatpad, the fixed removal frame that is provided with in both sides of back sets up the spout along seatpad width direction on the handrail, and the spout includes two U-shaped grooves, and the opening level in two U-shaped grooves sets up relatively, and the removal frame is located between two U-shaped grooves, the both sides of removing the frame are provided with the gyro wheel, and the gyro wheel gyration is supported on removing the frame, and the gyro wheel is located the U-shaped inslot to the axis level of gyro wheel and the length direction of perpendicular to spout, gyro wheel are.

Through adopting the above technical scheme, during the use, the both sides of back are connected with two and remove the frame, the spout has been seted up on the handrail, the length direction of spout is along the width direction of seatpad, both sides at removing the frame are provided with the gyro wheel, it is provided with between two relative U-shaped grooves to remove the frame, thereby make the gyro wheel be located the U-shaped inslot, make the length direction that removes the frame and can pass through the U-shaped groove slide that the length direction of spout promptly, thereby at the gliding in-process of removal frame, remove the frame and can take the back to carry out the translation along the width direction of sofa, rethread fixing device fixes, such adjustment back is in the top of seatpad, thereby the adjustment of more convenient back.

The invention is further configured to: the side wall of the U-shaped groove is provided with a rack, the rack is positioned on the side wall of the lower part of the U-shaped groove, and the side wall of the roller is provided with teeth matched with the rack.

Through adopting above-mentioned technical scheme, set up the rack on the lateral wall in U-shaped groove to the tooth cooperation on rack and the gyro wheel lateral wall can roll the realization on the rack through the gyro wheel at the gyro wheel along the length direction translation in-process in U-shaped groove, and after the gyro wheel passes through fixing device to be fixed, the locking of gyro wheel and rack is more firm.

The invention is further configured to: fixing device includes bolt and spring, remove and set up vertical guiding hole on the frame, the guiding hole just to the top of gyro wheel, the bolt cooperation is in the guiding hole, and the guiding hole is stretched out to the upper end of bolt, and the lower extreme of bolt can be inserted between two teeth on the gyro wheel lateral wall, and the spring housing is established on the bolt, and spring lower extreme butt is on the bolt, and the one end butt of spring is on removing the frame.

Through adopting above-mentioned technical scheme, the bolt is downward along the length direction of guiding hole under the effort of spring, and the lower extreme of bolt inserts between two teeth on the gyro wheel lateral wall to make the bolt fix the gyro wheel, prevent that the gyro wheel from rotating, make the back locking.

The invention is further configured to: and a pull ring is arranged at the outer side of the guide hole at the upper end of the bolt.

Through adopting above-mentioned technical scheme, the pull ring is fixed in the upper end of bolt, and the pull ring is located the outside to make things convenient for the user of service to upwards stimulate the pull ring, make the bolt break away from between two teeth on the gyro wheel, make things convenient for the removal of back.

The invention is further configured to: the upper portion of spout has the seal groove of seting up on the handrail, is provided with the boundary belt in the seal groove, and boundary belt sliding connection is in the seal groove, and the boundary belt lid is in the relative opening top in two U-shaped grooves, and the removal frame passes the boundary belt.

Through adopting above-mentioned technical scheme, the seal groove that the top of spout was seted up sets up the boundary belt in the seal groove, moves the frame like this when moving along the spout, and the boundary belt can move along the seal groove to make the boundary belt seal the top in two U-shaped grooves, prevent to move a tong.

The invention is further configured to: the protective belt is made of stainless steel materials.

Through adopting above-mentioned technical scheme, the boundary belt sets to stainless steel material, can improve the intensity of boundary belt on the one hand, and on the other hand can be used the life-span longer.

The invention is further configured to: a connecting device is arranged between the seat frame and the handrail, the connecting device comprises a sleeve, hook pins and screw plugs, the screw plugs are in threaded connection in the sleeve, the sleeve is fixed on the handrail, the length direction of the sleeve faces the seat frame, the position, opposite to the sleeve, of the seat frame is provided with three positioning holes, the number of the hook pins is three in the circumferential direction of the sleeve, the end parts of the hook pins are provided with hook parts, the hook pins are connected to the sleeve in a sliding mode, and the sliding direction of the hook pins is along the radial direction of the sleeve; the hook pin is inserted into the positioning hole, the hook part is hooked at one end, far away from the sleeve, of the positioning hole, one end, facing the hook pin, of the screw plug is tapered, and the hook pin abuts against the conical surface.

Through adopting above-mentioned technical scheme, hook portion on the three hook round pin in the sleeve inserts the locating hole, and sleeve internal thread connection has the plug screw, and when the plug screw was rotatory for the sleeve, the conical one end of plug screw extruded the hook round pin, and three hook round pin is along telescopic radial movement, and telescopic one end is kept away from at the locating hole to the hook portion hook on the hook round pin, and the equal comparison of dismantlement and installation of handrail and seat frame is convenient in such structure.

The invention is further configured to: the upper surface of the seat cushion is arranged obliquely to the ground, and the position far away from the backrest is higher than the position close to the backrest.

Through adopting above-mentioned technical scheme, the upper surface of seatpad is inclined to ground to one side that is close to the back of seatpad is lower, and user of service person when sitting on the seatpad, user's person will be to the trend of back direction slope, thereby user of service person leans on the back more comfortable.

The invention is further configured to: the upper portion of seat frame is provided with the snake-shaped steel spring, and the length direction of snake-shaped steel spring is along the width direction of seat frame to the snake-shaped steel spring has many evenly distributed along the length direction of seat frame, and many snake-shaped steel springs support on the lower surface of seatpad.

Through adopting above-mentioned technical scheme, fix on the seat frame through the snake-shaped steel spring to the snake-shaped steel spring supports on the lower surface of seatpad, thereby when the user sits on the seatpad, snake-shaped steel spring self also can be through certain deformation, improves the comfort that the user sat and uses.

In conclusion, the beneficial technical effects of the invention are as follows:

1. two moving frames are connected with two sides of the backrest, the length direction of the sliding groove is along the width direction of the seat cushion, the moving frames are arranged between two opposite U-shaped grooves, so that the idler wheels are positioned in the U-shaped grooves, the moving frames can slide along the length direction of the U-shaped grooves, namely the length direction of the sliding groove, and the moving frames can drive the backrest to translate along the width direction of the sofa, so that the backrest can be conveniently adjusted;

2. the bolt is downward along the length direction of the guide hole under the action force of the spring, the lower end of the bolt is inserted between the two teeth on the side wall of the roller, so that the roller is fixed by the bolt, the pull ring is fixed at the upper end of the bolt and is positioned on the outer side, a user can conveniently pull the pull ring upwards, and the user can conveniently fix and move the backrest;

3. through the seal groove of seting up in the top of spout, set up the boundary belt in the seal groove, when the removal frame removed along the spout like this, the boundary belt can remove along the seal groove to make the boundary belt seal the top in two U-shaped grooves, prevent to remove a tong.

Drawings

FIG. 1 is a first general structural diagram of the present invention;

FIG. 2 is a schematic view of the cut-away armrest of the present invention;

FIG. 3 is a schematic cross-sectional view of the A-A plane of FIG. 2;

FIG. 4 is an enlarged partial schematic view of portion B of FIG. 2;

FIG. 5 is an enlarged partial schematic view of portion C of FIG. 3;

FIG. 6 is a second overall structural schematic of the present invention;

fig. 7 is a schematic view of the connecting device showing the structure of the split sleeve.

In the figure, 1, a seat frame; 11. positioning holes; 12. a chute; 121. a U-shaped groove; 13. a sealing groove; 131. protecting the belt; 2. a backrest; 3. a seat cushion; 4. a handrail; 5. a movable frame; 51. a roller; 511. teeth; 52. a rack; 53. a fixing device; 531. a bolt; 532. a spring; 533. a guide hole; 534. a pull ring; 6. a connecting device; 61. a sleeve; 62. a hook pin; 621. a hook portion; 63. a guide bar; 64. a pressure spring; 65. a plug screw; 7. a snake-shaped steel spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the sofa with the backrest adjustable in position disclosed by the invention comprises a seat frame 1, a backrest 2, a seat cushion 3 and two armrests 4, wherein the seat frame 1 is a rectangular frame, the armrests 4 are arranged on two sides of the seat frame 1 in the length direction, the armrests 4 are connected with the seat frame 1, the seat cushion 3 is placed on the upper surface of the seat frame 1, the backrest 2 is vertically arranged on the upper surface of the seat cushion 3, two sides of the backrest 2 close to the armrests 4 are provided with movable frames 5, and the backrest 2 is connected with the armrests 4 through the movable frames 5. When the seat cushion 3 is inclined to the horizontal plane, and the inclined direction is that the side of the seat cushion 3 close to the backrest 2 is lower than the side of the seat cushion 3 far away from the backrest 2, so that a user can naturally incline towards the backrest 2 and lean against the backrest 2 when sitting on the seat cushion 3.

Referring to fig. 4 and 5, the armrest 4 is provided with a sliding groove 12, the sliding groove 12 includes two U-shaped grooves 121 with opposite openings, the length direction of the sliding groove 12 is provided along the width direction of the seat cushion 3, the two U-shaped grooves 121 are arranged at intervals, the moving frame 5 extends between the two U-shaped grooves 121, and rollers 51 are arranged on two sides of the moving frame 5, the rollers 51 are located in the U-shaped grooves 121, the rollers 51 are rotatably supported on the moving frame 5, and the axis of the rollers 51 is horizontal and perpendicular to the length direction of the sliding groove 12; teeth 511 are formed on the side wall of the roller 51, a rack 52 is fixedly arranged on the side wall of the lower portion in the U-shaped groove 121, the roller 51 is positioned above the rack 52, the teeth 511 are meshed with the rack 52, when the moving frame 5 moves along the length direction of the sliding groove 12, the roller 51 rolls on the rack 52, a fixing device 53 is connected to the roller 51, and the fixing device 53 is used for fixing the roller 51, so that the backrest 2 is fixed at a position needing to be adjusted.

Referring to fig. 2 and 4, the fixing device 53 includes a latch 531 and a spring 532, a vertical guide hole 533 is formed in the moving frame 5, the guide hole 533 is located above the roller 51, the latch 531 is fitted in the guide hole 533, an upper end of the latch 531 extends out of the guide hole 533 and is fixedly provided with a pull ring 534, and the pull ring 534 is located outside the guide hole 533; the lower end of the pin 531 can be inserted between the two teeth 511 on the sidewall of the roller 51, the spring 532 is sleeved on the pin 531, the lower end of the spring 532 abuts against the pin 531, and the upper end of the spring 532 abuts against the movable frame 5. In use, when a user pulls the pull ring 534 upwards, the latch 531 moves upwards against the acting force of the spring 532, so that the latch 531 is separated from between the two teeth 511 of the roller 51, so that the roller 51 can translate along the length direction of the sliding chute 12, when the user adjusts to a proper position, the user releases the latch 531, the latch 531 slides along the length direction of the guide hole 533 under the acting force of the spring 532, so that the lower end of the latch 531 is inserted between the two adjacent teeth 511, and then the latch 531 fixes the roller 51, thereby completing the fixation of the approach.

Referring to fig. 2 and 4, in order to prevent the escape opening formed above the two opposite U-shaped grooves 121 from falling into sundries or prevent the insertion of hands during use, a sealing groove 13 provided on the handrail 4 is provided above the chute 12; the seal grooves 13 are all located in the handrail 4, a protective strip 131 is arranged in the seal grooves 13, the protective strip 131 is made of stainless steel materials, the moving frame 5 penetrates the protective strip 131 upwards from the position of the U-shaped groove 121, and the protective strip 131 is fixed together. During the sliding process of the movable frame 5 along the length direction of the sliding chute 12, the protection belt 131 is slidably connected in the sealing groove 13 and covers the opposite openings of the two U-shaped grooves 121, so that the protection belt 131 can translate along the sealing groove 13 and keep closing the opposite openings of the two U-shaped grooves 121.

Referring to fig. 6, a serpentine steel spring 7 is provided at an upper portion of the seat frame 1, a length direction of the serpentine steel spring 7 is along a width direction of the seat frame 1, and a plurality of the serpentine steel springs 7 are uniformly distributed along the length direction of the seat frame 1, the plurality of the serpentine steel springs 7 are supported on a lower surface of the seat cushion 3; when a user sits on the seat cushion 3, the plurality of the serpentine steel springs 7 are deformed at the same time after the seat cushion 3 is deformed, so that the comfort of the user can be improved. A connecting device 6 is arranged between the two side walls of the seat frame 1 close to the handrail 4 and the handrail 4, and the connecting device 6 is used for connecting the seat frame 1 and the handrail 4.

Referring to fig. 3 and 7, the connecting device 6 includes a sleeve 61, the sleeve 61 is fixed on the armrest 4, the length direction of the sleeve 61 is directed to the side wall of the seat frame 1, a positioning hole 11 is formed in the side wall of the seat frame 1 at a position corresponding to the sleeve 61, three hook pins 62 are provided in the sleeve 61, the three hook pins 62 are connected to a guide bar 63, the length direction of the guide bar 63 diverges outward from the center along the radial direction of the sleeve 61, and the guide bar 63 is slidably connected to the side wall of the sleeve 61. A pressure spring 64 is sleeved on the guide rod 63, one end of the pressure spring 64 is abutted against the hook pin 62, the other end of the pressure spring 64 is abutted against the side wall of the sleeve 61, the hook pin 62 moves towards the center of the sleeve 61, a screw plug 65 is arranged at the center position of the sleeve 61, the screw plug 65 is in threaded connection in the sleeve 61, the center line of the screw plug 65 is overlapped with the center line of the sleeve 61, one end of the screw plug 65, facing the hook pin 62, is provided with a cone, the cone surface is abutted against one surface, close to the center of the sleeve 61, of the hook pin 62, and when the screw plug 65 moves towards the position of the hook pin 62 along the length direction of the sleeve 61, the screw plug 65 presses the hook pin 62, so that the hook; the hook 621 is provided at an end of the hook pin 62 away from the sleeve 61, and when the hook pin 62 is inserted into the positioning hole 11, the hook 621 opens outward along with the hook pin 62, so that the hook 621 is hooked at the end of the positioning hole 11 away from the sleeve 61, and the seat frame 1 and the armrest 4 are connected.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a sofa of back adjustable position, includes seat frame (1), back (2), seatpad (3) and handrail (4), and the both sides at seat frame (1) are installed in handrail (4), and the upper surface at seat frame (1) is placed in seatpad (3), and back (2) are located seatpad (3), its characterized in that: the backrest is characterized in that moving frames (5) are fixedly arranged on two sides of the backrest (2), sliding grooves (12) along the width direction of the seat cushion (3) are formed in the armrests (4), each sliding groove (12) comprises two U-shaped grooves (121), openings of the two U-shaped grooves (121) are horizontally arranged oppositely, each moving frame (5) is located between the two U-shaped grooves (121), rolling wheels (51) are arranged on two sides of each moving frame (5), the rolling wheels (51) are rotatably supported on the moving frames (5), the rolling wheels (51) are located in the U-shaped grooves (121), the axes of the rolling wheels (51) are horizontal and perpendicular to the length direction of the corresponding sliding groove (12), and the rolling wheels (51) are connected with fixing devices (53);

a rack (52) is arranged on the side wall of the U-shaped groove (121), the rack (52) is positioned on the side wall of the lower part of the U-shaped groove (121), and teeth (511) matched with the rack (52) are arranged on the side wall of the roller (51);

the fixing device (53) comprises a bolt (531) and a spring (532), a vertical guide hole (533) is formed in the moving frame (5), the guide hole (533) is right above the roller (51), the bolt (531) is matched in the guide hole (533), the upper end of the bolt (531) extends out of the guide hole (533), the lower end of the bolt (531) can be inserted between two teeth (511) on the side wall of the roller (51), the spring (532) is sleeved on the bolt (531), the lower end of the spring (532) is abutted to the bolt (531), and one end of the spring (532) is abutted to the moving frame (5);

a pull ring (534) is arranged at the upper end of the bolt (531) and positioned outside the guide hole (533);

a sealing groove (13) formed in the handrail (4) is formed above the sliding groove (12), a protective belt (131) is arranged in the sealing groove (13), the protective belt (131) is connected in the sealing groove (13) in a sliding mode, the protective belt (131) covers the openings of the two U-shaped grooves (121) which are opposite, and the movable frame (5) penetrates through the protective belt (131);

the protective belt (131) is made of stainless steel material;

the upper surface of the seat cushion (3) is inclined to the ground, and the position far away from the backrest (2) is higher than the position of the seat cushion (3) close to the backrest (2);

the seat is characterized in that a snake-shaped steel spring (7) is arranged on the upper portion of the seat frame (1), the length direction of the snake-shaped steel spring (7) is along the width direction of the seat frame (1), a plurality of snake-shaped steel springs (7) are uniformly distributed along the length direction of the seat frame (1), and the snake-shaped steel springs (7) are supported on the lower surface of the seat cushion (3).

2. The sofa with adjustable backrest position according to claim 1, wherein: a connecting device (6) is arranged between the seat frame (1) and the armrest (4), the connecting device (6) comprises a sleeve (61), hook pins (62) and screw plugs (65), the screw plugs (65) are in threaded connection in the sleeve (61), the sleeve (61) is fixed on the armrest (4), the length direction of the sleeve (61) faces towards the seat frame (1), positioning holes (11) are formed in the position, opposite to the sleeve (61), of the seat frame (1), the number of the hook pins (62) is three in the circumferential direction of the sleeve (61), hook portions (621) are arranged at the end portions of the hook pins (62), the hook pins (62) are in sliding connection on the sleeve (61), and the sliding direction is along the radial direction of the sleeve (61); the hook pin (62) is inserted into the positioning hole (11), the hook part (621) is hooked at one end of the positioning hole (11) far away from the sleeve (61), the end of the screw plug (65) facing the hook pin (62) is provided with a taper, and the hook pin (62) abuts against the conical surface position.