Movable sofa

Abstract

A movable sofa solves the problems that when some existing sofas are carried, a user needs to lift a sofa main body manually, much effort is consumed, and operation is inconvenient. Comprising a sofa base provided with a placing cavity, armrests arranged on the two sides of the sofa base, a backrest arranged on the sofa base, a double-end motor arranged in the placing cavity, first lead screws fixedly arranged at the output end of the double-end motor, two first lead screws correspondingly penetrating into the two armrests, moving wheels arranged in the armrests, and moving assemblies arranged on the moving wheels. The moving assembly comprises a sleeve rotationally arranged in the handrail and a second lead screw, a moving cavity is formed in the sleeve, the interior of the moving cavity is of a threaded structure, a positioning piece used for enabling the sleeve to rotate stably is arranged on the sleeve, the second lead screw penetrates into the moving cavity in a threaded mode, the bottom end of the second lead screw is connected with the moving wheel, and a first bevel gear is arranged at the end of the first lead screw; the sleeve is provided with a second bevel gear, and the first bevel gear is meshed with the second bevel gear. The movable sofa is simple in structure and mainly used for moving the sofa.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a mobile sofa. Background Art

[0002] A sofa is a cushioned, multi-seat chair with armrests on both sides. It is a kind of soft furniture. People often lean on the sofa to rest and relieve fatigue.

[0003] There are some sofas in the prior art, such as the utility model patent document with authorization announcement number "CN213640273U" and patent name "A conveniently movable sofa", which discloses a sofa including a sofa body, a hand push groove, a first spring, a movable plate, a universal wheel, an extension plate, a rectangular plate, a second spring, a connecting plate, a square plate and a square groove.

[0004] When it is inconvenient to manually carry a heavy multi-person sofa in a small room, the user puts his finger into the hand push groove to lift the sofa body. At this time, the first spring drives the universal wheel to move through the moving plate, and the moving plate drives the rectangular plate to move through the extension plate. When the bottom of the rectangular plate contacts the bottom inner wall of the rectangular cavity, the second spring drives the square plate to move through the connecting plate, so that the square plate is stuck in the square groove to fix the rectangular plate. At this time, the sofa body can be moved through the universal wheel. However, some existing sofas require users to manually lift the sofa body before moving, which consumes a lot of effort and is inconvenient to operate. Utility Model Content

[0005] The utility model aims to solve the technical problems mentioned in the background art that when some existing heavier sofas for multiple people need to be moved in a small room, the user needs to manually lift the sofa body, which consumes a lot of effort and is inconvenient to operate.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A movable sofa comprises a sofa base with a placement cavity at the bottom, an armrest with a cavity inside is provided on opposite sides of the sofa base, a backrest opposite to the two armrests is provided on the sofa base, a double-headed motor is provided in the placement cavity, a first screw rod is fixedly provided on the two output ends of the double-headed motor, the two first screw rods are respectively and one-to-one inserted into the two armrests, the rod sections of the first screw rod passing through the armrests are all smooth round rod sections, a moving wheel is provided in the armrest, a moving assembly whose height can be adjusted vertically is provided on the moving wheel, the moving assembly comprises a sleeve and a second screw rod rotatably provided at the top of the armrest, a moving cavity communicated with the bottom end of the sleeve is provided in the sleeve, the interior of the moving cavity is a threaded structure, a positioning piece for making it rotate smoothly is provided on the sleeve, the second screw rod is threadedly inserted into the moving cavity, the bottom end of the second screw rod is connected to the moving wheel, a first bevel gear located in the armrest is provided at the end of the first screw rod, a second bevel gear is fixedly provided on the sleeve, and the first bevel gear is meshed with the second bevel gear.

[0008] Working principle:

[0009] First, the user starts the double-headed motor, and then drives the two first bevel gears to rotate through the two first screw rods respectively, and the two first bevel gears respectively drive the two second bevel gears to rotate, and then drive the two sleeves to rotate in the corresponding positioning parts, so that the two second screw rods drive the moving wheels thereon to move vertically, thereby moving out of the bottom of the handrail.

[0010] The beneficial effects of the utility model are:

[0011] During use of the utility model, the user starts the double-headed motor, and the lifting and storage of the moving wheels are achieved through the cooperation of the first screw rod, the first bevel gear, the second bevel gear, the sleeve and the second screw rod, so that the movement of the sofa is more convenient, and only one double-headed motor is provided to reduce the use of the driving device and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cutaway structure of an embodiment of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the enlarged structure.

[0014] Explanation of the accompanying drawings: placement cavity 1, sofa base 2, armrest 3, backrest 4, double-headed motor 5, first screw 6, moving wheel 7, first bevel gear 8, second bevel gear 9, sleeve 10, second screw 11, moving cavity 12, positioning piece 13, positioning block 14, bearing 15, connecting box 16, connecting rod 17, connecting block 18, spring 19, limit plate 20, first limit block 21, second limit block 22, sleeve 23, limit rod 24, connecting piece 25, limit groove 26, dust baffle 27, ball 28, placement piece 30. DETAILED DESCRIPTION

[0015] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] like Figure 1 As shown, a movable sofa comprises a sofa base 2 with a placement cavity 1 at the bottom, an armrest 3 with a cavity inside is provided on opposite sides of the sofa base 2, a backrest 4 opposite to the two armrests 3 is provided on the sofa base 2, a double-headed motor 5 is provided in the placement cavity 1, a first screw rod 6 is fixed on the two output ends of the double-headed motor 5, the two first screw rods 6 are respectively and one by one inserted into the two armrests 3, the rod sections of the first screw rod 6 passing through the armrests 3 are all smooth round rod sections, a moving wheel 7 is provided in the armrest 3, and a vertically adjustable The movable assembly of the height thereof includes a sleeve 10 and a second screw rod 11 which are rotatably arranged at the top of the handrail 3. The sleeve 10 is provided with a movable cavity 12 which is connected to the bottom end thereof. The inside of the movable cavity 12 is a threaded structure. The sleeve 10 is provided with a positioning member 13 for making it rotate smoothly. The second screw rod 11 is threadedly inserted into the movable cavity 12. The bottom end of the second screw rod 11 is connected to the movable wheel 7. The end of the first screw rod 6 is provided with a first bevel gear 8 located in the handrail 3. The sleeve 10 is fixed with a second bevel gear 9. The first bevel gear 8 is meshed with the second bevel gear 9. Figure 1 As shown, a placement piece 30 is fixedly arranged at the top of the placement cavity 1, and a double-headed motor 5 is arranged on the placement piece 30, wherein a first screw rod 6 rotates through the placement piece 30, and the rod section of the first screw rod 6 that rotates through the placement piece 30 is a smooth round rod section. This design method facilitates the support and placement of the double-headed motor 5, so that it can work stably, and then the moving wheel 7 can move stably to extend out of the bottom end of the handrail 3 or be stored in the cavity of the handrail 3.

[0017] During the use of the utility model, the user starts the double-headed motor 5, and the first screw rod 6, the first bevel gear 8, the second bevel gear 9, the sleeve 10 and the second screw rod 11 cooperate to realize the lifting and storage of the moving wheel 7, so that the movement of the sofa is more convenient, and only one double-headed motor 5 is provided to reduce the use of the driving device and save costs.

[0018] like Figure 1As shown, a sleeve 23 is provided on the threaded sleeve of the first screw rod 6, and a vertically upward limiting rod 24 and a vertically downward connecting piece 25 are fixed on the sleeve 23. A limiting groove 26 is provided on the top of the placement cavity 1, and the limiting rod 24 is slidably arranged in the limiting groove 26. A dust baffle 27 is fixed at the bottom of the connecting piece 25, and a plurality of balls 28 are rotatably embedded at the bottom of the dust baffle 27. The sofa base 2 and the armrest 3 are both provided with the same and conductive through holes, and the through holes are used for the dust baffle 27 to slide into or out of the armrest 3. When the double-headed motor 5 is working, the two output ends thereon respectively drive the two first screw rods 6 to rotate, and the sleeve 23 on each first screw rod 6 moves relative to the double-headed motor 5, thereby driving the limiting rod 24 and the connecting piece 25 thereon to slide. In this process, the limiting rod 24 slides in the corresponding limiting groove 26, and the connecting piece 25 drives the dust baffle 27 to pass through the through hole and slide relative to the double-headed motor 5. This design method facilitates sealing the cavity of the armrest 3 through the dustproof baffle 27 to prevent a lot of dust from being in the cavity of the armrest 3, and the dustproof baffle 27 is provided with a ball 28 for rapid back and forth movement, with a simple structure and good effect.

[0019] like Figure 1 As shown, the positioning member 13 is cylindrical and the enclosure is arranged outside the sleeve 10. A positioning block 14 is fixedly arranged on the positioning member 13. The positioning block 14 is fixedly connected to the inner wall of the cavity of the handrail 3. A bearing 15 is fixedly arranged on the inner wall of the circumference of the positioning member 13. The sleeve 10 passes through the center hole of the bearing 15 and the two are fixedly connected. When the sleeve 10 rotates, the center hole of the bearing 15 is driven to rotate relative to the positioning member 13. This design method installs and positions the bearing 15 through the positioning member 13, and the sleeve 10 is limited by the bearing 15, which ensures the smooth rotation of the sleeve 10, so that the moving wheel 7 can move vertically smoothly and extend out of the bottom end of the handrail 3.

[0020] like Figure 1 and Figure 2 As shown, a connecting box 16 is fixedly provided at the bottom of the second screw rod 11, and a connecting rod 17 is slidably passed through the connecting box 16 and extends vertically downward and is arranged on the moving wheel 7. A connecting block 18 located in the connecting box 16 is fixedly provided on the connecting rod 17, and a spring 19 wound around the connecting rod 17 is fixedly provided at the bottom of the connecting box 16, and the bottom end of the spring 19 is arranged on the moving wheel 7. When the moving wheel 7 extends out from the bottom end of the handrail 3 and abuts against the ground, the connecting rod 17 drives the connecting block 18 to move vertically upward in the connecting box 16, thereby compressing the spring 19 to achieve buffering. When the moving wheel 7 moves and is stored in the handrail 3 and is separated from the ground, the spring 19 elastically pushes the moving wheel 7, so that the connecting rod 17 drives the connecting block 18 to move vertically downward in the connecting box 16. This design method is convenient for buffering and protecting the moving wheel 7, and has a simple structure and good effect. Figure 1As shown, a limit plate 20 adapted to the size of the cavity of the armrest 3 is fixedly provided on the top of the moving wheel 7, and the side wall of the limit plate 20 is correspondingly slidably abutted against the inner wall of the cavity of the armrest 3, and the bottom end of the spring 19 and the connecting rod 17 are fixed on the limit plate 20. The armrest 3 is provided with a first limit block 21 and a second limit block 22 in pairs. The two first limit blocks 21 and the two second limit blocks 22 in each group are horizontal, and the two first limit blocks 21 are respectively arranged above the two second limit blocks 22 in a one-to-one manner, and the limit plate 20 is arranged between the first limit block 21 and the second limit block 22 opposite to each other. When the moving wheel 7 moves vertically, the limit plate 20 thereon slides and abuts against the inner wall of the cavity of the armrest 3, and when the limit plate 20 moves to abut against the bottom of the first limit block 21, the moving wheel 7 is stored in the armrest 3, and when the limit plate 20 moves to abut against the top of the second limit block 22, the moving wheel 7 slides out of the bottom end of the armrest 3. This design method facilitates the stable vertical movement of the moving wheel 7, and has a simple structure and good effect.

[0021] Working principle:

[0022] First, the user starts the double-headed motor 5, and the two output ends of the double-headed motor 5 drive the two first screws 6 to rotate one by one, and the sleeve 23 on each first screw 6 slides relative to the double-headed motor 5, thereby driving the limit rod 24 and the connecting member 25 thereon to slide. In this process, the limit rod 24 slides in the corresponding limit groove 26, and the connecting member 25 drives the dust baffle 27 to pass through the through hole and slide relative to the double-headed motor 5.

[0023] When the first screw rod 6 rotates, it drives the first bevel gear 8 to rotate, and the first bevel gear 8 drives the second bevel gear 9 to rotate, and the second bevel gear 9 drives the sleeve 10 to rotate, so that the second screw rod 11 in the sleeve 10 moves vertically downward. In this process, the sleeve 10 is rotatably arranged in the center hole of the bearing 15, and the top of the sleeve 10 is rotatably arranged on the inner top of the cavity of the handrail 3.

[0024] When the limit plate 20 moves vertically downward with the second screw rod 11 and abuts against the top of the second limit block 22, the moving wheel 7 slides out of the bottom end of the armrest 3 cavity and abuts against the ground. At this time, the user stops the double-headed motor 5 and moves the sofa. In this process, the connecting rod 17 drives the connecting block 18 to slide vertically upward in the connecting box 16, thereby compressing the spring 19 to achieve buffering. In this process, the side wall of the limit plate 20 always slides against the inner wall of the armrest 3 cavity.

[0025] When the sofa is moved to a suitable position, the double-headed motor 5 is restarted, thereby driving the first screw 6 to rotate, and the sleeve 10 is rotated through the cooperation of the first bevel gear 8 and the second bevel gear 9, so that the second screw 11 drives the moving wheel 7 to move vertically upward through the limit plate 20. When the limit plate 20 moves vertically upward with the second screw 11 and abuts against the bottom of the first limit block 21, the moving wheel 7 is completely received in the cavity of the armrest 3, and the spring 19 elastically pushes the moving wheel 7, so that the connecting rod 17 drives the connecting block 18 to slide vertically downward in the connecting box 16. In this process, the shaft sleeve 23 on the first screw 6 slides away from the double-headed motor 5, thereby driving the limit rod 24 and the connecting member 25 thereon to slide. In this process, the limit rod 24 slides in the corresponding limit groove 26, and the connecting member 25 drives the dust baffle 27 to pass through the through hole and abut against the inner wall of the cavity of the armrest 3, thereby closing the bottom of the cavity of the armrest 3.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A mobile sofa, comprising a sofa base (2) with a placement cavity (1) at the bottom, characterized in that: An armrest (3) with a cavity inside is provided on opposite sides of the sofa base (2); a backrest (4) opposite to the two armrests (3) is provided on the sofa base (2); a double-headed motor (5) is provided in the placement cavity (1); a first screw rod (6) is fixedly provided on the two output ends of the double-headed motor (5); the two first screw rods (6) are respectively and one by one inserted into the two armrests (3); the rod sections of the first screw rod (6) passing through the armrests (3) are all smooth round rod sections; a moving wheel (7) is provided in the armrest (3); a moving assembly capable of vertically adjusting its height is provided on the moving wheel (7); the moving assembly comprises a rotating device A sleeve (10) and a second screw rod (11) are provided at the top of the handrail (3); a movable cavity (12) communicated with the bottom end thereof is provided in the sleeve (10); the interior of the movable cavity (12) is a threaded structure; a positioning member (13) for enabling the sleeve (10) to rotate smoothly is provided on the sleeve (10); the second screw rod (11) is threadedly inserted into the movable cavity (12); the bottom end of the second screw rod (11) is connected to the movable wheel (7); a first bevel gear (8) located in the handrail (3) is provided at the end of the first screw rod (6); a second bevel gear (9) is fixedly provided on the sleeve (10); the first bevel gear (8) is meshed with the second bevel gear (9).

2. A mobile sofa according to claim 1, characterized in that: The positioning member (13) is cylindrical and is surrounded by a block outside the sleeve (10). A positioning block (14) is fixedly provided on the positioning member (13). The positioning block (14) is fixedly connected to the inner wall of the cavity of the handrail (3). A bearing (15) is fixedly provided on the circumferential inner wall of the positioning member (13). The sleeve (10) passes through the center hole of the bearing (15) and the two are fixedly connected.

3. The mobile sofa according to claim 1, characterized in that: A connecting box (16) is fixedly provided at the bottom of the second screw rod (11), a connecting rod (17) vertically downward and arranged on the moving wheel (7) is slidably passed through the connecting box (16), a connecting block (18) located in the connecting box (16) is fixedly provided on the connecting rod (17), a spring (19) wound around the connecting rod (17) is fixedly provided at the bottom of the connecting box (16), and the bottom end of the spring (19) is arranged on the moving wheel (7).

4. The mobile sofa according to claim 3, characterized in that: A limiting plate (20) adapted to the size of the cavity of the armrest (3) is fixedly provided on the top of the moving wheel (7); the side wall of the limiting plate (20) is correspondingly slidably abutted against the inner wall of the cavity of the armrest (3); the spring (19) and the bottom end of the connecting rod (17) are fixedly provided on the limiting plate (20); a first limiting block (21) and a second limiting block (22) are provided in the armrest (3) in groups of two; the two first limiting blocks (21) and the two second limiting blocks (22) in each group are both horizontal, and the two first limiting blocks (21) are respectively arranged above the two second limiting blocks (22) in a one-to-one correspondence; the limiting plate (20) is arranged between the first limiting block (21) and the second limiting block (22) which are opposite to each other in upper and lower directions.

5. The mobile sofa according to claim 1, characterized in that: A shaft sleeve (23) is threadedly sleeved on the first screw rod (6), a vertically upward limiting rod (24) and a vertically downward connecting piece (25) are fixedly provided on the shaft sleeve (23), a limiting groove (26) is provided at the top of the placement cavity (1), the limiting rod (24) is slidably arranged in the limiting groove (26), a dust baffle (27) is fixedly provided at the bottom of the connecting piece (25), a plurality of balls (28) are rotatably embedded at the bottom of the dust baffle (27), the sofa base (2) and the armrest (3) are both provided with identical and connected through holes, the through holes are used for the dust baffle (27) to slide into or move out of the armrest (3).

6. The mobile sofa according to claim 1, characterized in that: A placement piece (30) is fixedly arranged at the top of the placement chamber (1), and the double-headed motor (5) is arranged on the placement piece (30). One of the first screw rods (6) rotates through the placement piece (30), and the rod section of the first screw rod (6) that rotates through the placement piece (30) is a smooth round rod section.

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