Sofa

Abstract

The utility model belongs to the technical field of home furnishing, and discloses a sofa which comprises a supporting base, a mounting seat, a cushion and a driving mechanism, and an avoiding space penetrating up and down is arranged on the rear side of the supporting base; the mounting base is slidably arranged on the supporting base in the front-back direction. The cushion is fixed on the mounting seat; the driving mechanism is configured to drive the mounting base to slide back and forth relative to the supporting base. According to the sofa, the avoiding space penetrating up and down is arranged on the rear side of the supporting base, and the cushion is mounted on the mounting seat which is connected with the supporting base in a front-back sliding manner, so that when the space on the rear side below the sofa needs to be cleaned or articles falling into the space need to be picked up, the difficulty in cleaning and picking up the articles can be reduced by moving the cushion forwards.

Description

Technical Field

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

[0002] The sofa is one of the most common and even necessary large furniture in family life. It is usually composed of a sofa base, seat cushions, backrests, armrests and other parts. The finished product is large in size and weight, so it occupies a large area. In order to ensure the overall aesthetics of the sofa and considering that the sofa is not moved frequently, the bottom of the sofa base is not equipped with pulleys, so it is difficult to move and requires at least two people to move it.

[0003] There is usually a gap between the sofa and the ground, which can easily cause some small objects to fall into the gap and be difficult to remove. At the same time, due to the limited length of the broom, dust is easily accumulated on the side of the sofa near the wall, resulting in a sanitary dead corner. Due to the large size and weight of the sofa itself, it is difficult to move, which brings inconvenience to daily cleaning and object picking work. Utility Model Content

[0004] The utility model aims to provide a sofa, which can move the seat cushion forward, so as to facilitate cleaning the gap between the back side of the sofa and the ground, and also facilitate taking out objects dropped between the ground and the sofa.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The sofa comprises a support base, a mounting seat, a seat cushion and a driving mechanism, wherein the rear side of the support base is provided with an escape space penetrating up and down; the mounting seat is slidably arranged on the support base along the front-back direction; the seat cushion is fixed on the mounting seat; and the driving mechanism is configured to drive the mounting seat to move forward and backward relative to the support base.

[0007] Preferably, the driving mechanism includes a motor, a screw and a nut, the screw extending in the front-to-back direction, the motor being configured to drive the screw to rotate, the nut being sleeved on the screw and capable of linear motion along the screw, the motor being arranged on one of the mounting seat and the support base, and the nut being connected to the other of the mounting seat and the support base.

[0008] Preferably, the motor is arranged on the mounting seat, and the driving mechanism also includes a transmission rod, the first end of the transmission rod is provided with a first avoidance hole extending along the length direction thereof, the second end of the transmission rod is hinged to the mounting seat, and the transmission rod is also provided with a second avoidance hole extending along the length direction thereof, the transmission rod is symmetrically provided with two transmission rods relative to the screw rod, a first connecting pin is provided on the nut, the first connecting pin is inserted into the first avoidance holes on the two transmission rods and can slide in the first avoidance hole, and two second connecting pins are symmetrically provided on the support base relative to the screw rod, the two second connecting pins are respectively inserted into the second avoidance holes on the two transmission rods and can slide in the second avoidance holes.

[0009] Preferably, a distance between the second connecting pin and the second end of the transmission rod is smaller than a distance between the second connecting pin and the first connecting pin.

[0010] Preferably, the rear side of the avoidance space is open.

[0011] Preferably, the width of the avoidance space along the front-to-back direction of the support base is not greater than 1 / 3 of the width of the support base in the front-to-back direction.

[0012] Preferably, one of the support base and the mounting seat is provided with a guide rail extending in the front-to-back direction, and the other is provided with a guide slider slidably matched with the guide rail, and the guide slider and the guide rail are engaged with each other.

[0013] Preferably, one of the support base and the mounting seat is provided with a support slide groove extending in the front-to-back direction, and the other is provided with a support sliding block slidably matched with the support slide groove.

[0014] Preferably, the support base and the mounting seat both adopt a frame structure.

[0015] Preferably, it further comprises a backrest and armrests, wherein the backrest and the armrests are both mounted on the mounting seat and move synchronously with the mounting seat.

[0016] Beneficial effects of the utility model: the sofa in the utility model is provided with an escape space which runs through from top to bottom at the rear side of the support base, and the seat cushion is installed on a mounting base which is slidably connected to the support base; the mounting base can slide back and forth relative to the support base under the drive of the driving mechanism, thereby exposing the escape space, and a broom can be extended into the escape space to easily clean dust or debris on the ground corresponding to the rear side of the sofa, or a hand can be extended into the escape space to take out fallen items. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of a sofa in an embodiment of the utility model (hiding a driving mechanism and a seat cushion);

[0018] Figure 2 It is a structural schematic diagram of the support base in the embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the connection relationship between the driving mechanism, the supporting base and the mounting seat in the embodiment of the utility model.

[0020] In the figure:

[0021] 1. Support base; 11. Support frame; 12. Support leg; 13. Guide rail; 14. Second connecting pin; 1a. Avoidance space; 1b. Support slide;

[0022] 2. Mounting seat; 21. Guide slider; 22. Support slider;

[0023] 3. Driving mechanism; 31. Motor; 32. Screw rod; 33. Nut; 34. Transmission rod; 34a. First avoidance hole; 34b. Second avoidance hole; 35. Articulated seat; 36. First connecting pin. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0028] refer to Figure 1-Figure 3 As shown, in an embodiment of the utility model, a sofa is proposed, comprising a support base 1, a mounting seat 2, a cushion and a driving mechanism 3, wherein the support base 1 serves as a load-bearing component of the entire sofa, stands on the ground and is stationary relative to the ground, a back side of the support base 1 (the side facing the wall) is provided with an escape space 1a that runs through from top to bottom, the mounting seat 2 is slidably arranged on the support base 1 along the front-to-back direction, the cushion is arranged on the top surface of the mounting seat 2, the mounting seat 2 can support the cushion, the driving mechanism 3 connects the mounting seat 2 and the support base 1, and is configured to drive the mounting seat 2 to move forward and backward relative to the support base 1.

[0029] The sofa is provided with an escape space 1a which runs through from top to bottom at the rear side of the support base 1, and the seat cushion is mounted on a mounting base 2 which is movably connected to the support base 1. The mounting base 2 can move forward and backward relative to the support base 1 under the drive of the driving mechanism 3, thereby exposing the escape space 1a. The dust or debris on the ground corresponding to the rear side of the sofa can be easily cleaned by extending a broom into the escape space 1a, or the hand can be extended into the escape space 1a to take out the fallen objects.

[0030] In this embodiment, the driving mechanism 3 includes a motor 31, a screw 32 and a nut 33, wherein the screw 32 extends in the front-to-back direction and is connected to the motor 31, the screw 32 can rotate driven by the motor 31, the nut 33 is sleeved on the screw 32 and can make a linear motion along the screw 32 when the screw 32 rotates. Due to the relativity of the movement, the motor 31 can be fixed on one of the support base 1 and the mounting base 2, and the nut 33 is connected to the other of the mounting base 2 and the support base 1.

[0031] Taking the motor 31 fixed on the mounting base 2 as an example, the nut 33 is connected to the support base 1. When the nut 33 moves linearly along the screw rod 32 under the action of the motor 31, the nut 33 moves linearly relative to the screw rod 32, thereby causing the mounting base 2 to move forward and backward relative to the support base 1. The use of the screw rod 32 and the nut 33 structure can achieve self-locking between the support base 1 and the mounting base 2, preventing the support base 1 and / or the mounting base 2 from moving relative to each other when subjected to forward and backward thrust or pulling force, thereby affecting the normal use of the sofa.

[0032] Furthermore, in order to make the left and right sides of the mounting base 2 move synchronously and stably, the driving mechanism 3 also includes a transmission rod 34, and the first end of the transmission rod 34 is provided with a first avoidance hole 34a extending along its length direction. When the motor 31 is set on the mounting base 2, the second end of the transmission rod 34 is hinged to the mounting base 2 through the hinge seat 35, and the transmission rod 34 is located between the first avoidance hole 34a and the hinge seat 35 and is also provided with a second avoidance hole 34b extending along its length direction. Two transmission rods 34 are symmetrically arranged relative to the screw rod 32, and a first connecting pin 36 is vertically arranged on the nut 33. Two second connecting pins 14 are symmetrically arranged on the support base 1 relative to the screw rod 32. The first connecting pin 36 is simultaneously inserted into the first avoidance holes 34a of the two transmission rods 34 and can slide in the first avoidance hole 34a, and the two second connecting pins 14 are respectively inserted into the two second avoidance holes 34b and can slide in the second avoidance holes 34b.

[0033] When the motor 31 rotates, the first connecting pin 36 in the first avoidance hole 34a moves forward and backward in a straight line along with the nut 33, and drives the transmission rod 34 to rotate around the second connecting pin 14 as the axis. Then, the second end of the transmission rod 34 can drive the mounting base 2 to move in a straight line opposite to the movement of the nut 33.

[0034] Furthermore, in order to reduce the power requirement of the motor 31 used, the transmission rod 34 is a labor-saving lever. Based on this, the distance between the second connecting pin 14 and the second end of the transmission rod 34 should always be smaller than the distance between the second connecting pin 14 and the first connecting pin 36.

[0035] refer to Figure 2 As shown, in order to further increase the movable space after the broom or hand is extended into the avoidance space 1a, and further improve the convenience of sweeping the floor or picking up objects, the avoidance space 1a arranged on the support base 1 is open at the rear side, that is, the avoidance space 1a is arranged to be U-shaped.

[0036] Taking into account the stability of the sofa when the mounting seat 2 moves forward, the forward movement distance of the mounting seat 2 does not exceed 1 / 3 of the width of the support base 1 along the front-to-back direction. On this basis, in order to improve the supporting function of the support base 1, the width of the avoidance space 1a on the mounting seat 2 along the front-to-back direction of the support base 1 is not greater than 1 / 3 of the width of the support base 1 along the front-to-back direction.

[0037] Of course, in order to provide sufficient movable space, the width of the avoidance space 1a on the mounting seat 2 along the front-to-back direction of the support base 1 is preferably set to 1 / 3 of the width of the support base 1 along the front-to-back direction.

[0038] Continue to refer Figure 2 As shown, the support base 1 adopts a frame structure, including a support frame 11 and support legs 12, wherein the support frame 11 is set to be rectangular, and its rear side is hollowed out as an escape space, and four support legs 12 are provided, respectively located at the four corners of the support frame 11. Specifically, the support frame 11 and the support legs 12 can be made of wood or metal profiles with high hardness, and no specific limitation is made here.

[0039] In order to improve the aesthetics, a mounting hole is opened on the support base 1 along the front-to-back direction, the screw 32, the motor 31 and the nut 33 are all located in the mounting hole, and a strip-shaped avoidance opening is opened on the side of the mounting hole facing the mounting seat 2 for the first connecting pin 36 to pass through.

[0040] In this embodiment, the mounting seat 2 also adopts a frame structure and is set as a rectangular frame of the same size as the supporting base 1. It is worth noting that in order to support the cushion, the mounting seat 2 is provided with a support frame at a position corresponding to the avoidance space of the supporting base 1.

[0041] In order to make the mounting seat 2 slide only in the front-to-back direction relative to the support base 1, a guide rail 13 extending in the front-to-back direction is provided on one of the support base 1 and the mounting seat 2, and a guide slider 21 slidingly matched with the guide rail 13 is provided on the other. Further, in order to avoid the risk of the mounting seat 2 tipping over due to the forward movement of the mounting seat 2 or the forward movement of gravity when a person sits on it, the guide rail 13 and the guide slider 21 are engaged with each other, for example, the guide rail 13 is set to be T-shaped, and the guide slider 21 is provided with a T-shaped slot matching the T-shaped guide rail, or the guide rail 13 is set to be dovetail-shaped, and the guide slider 21 is provided with a dovetail slot matching the dovetail-shaped guide rail.

[0042] In this embodiment, the guide rail 13 is protrudingly arranged on the upper surface of the support base 1, and the guide slider 21 is arranged on the lower surface of the mounting base 2. Specifically, the motor 31 and the screw rod 32 are centrally arranged on the mounting base 2, two guide rails 13 are symmetrically arranged relative to the screw rod 32, and two guide sliders 21 are correspondingly arranged, and the second ends of the two transmission rods 34 are respectively hinged to the two guide sliders 21 through the hinge seat 35. The symmetrically arranged guide sliders 21 not only play a guiding role, but also can improve the support stability of the support base 1 on the mounting base 2.

[0043] Furthermore, one of the support base 1 and the mounting seat 2 is provided with a support groove 1b extending in the front-to-back direction, and the other is provided with a support slider 22, which slides in cooperation with the support groove 1b to improve the supporting capacity of the support base 1 for the mounting seat 2.

[0044] In this embodiment, the support groove 1b is opened at the left and right ends of the support frame 11, and the support slider 22 is set on the mounting seat 2 and has the same length as the length of the support groove 1b, so as to increase the contact area between the mounting seat 2 and the support base 1 when sliding relative to the support base 1.

[0045] In this embodiment, in order to improve the comfort of the sofa, the sofa also includes a backrest and armrests, which are both mounted on the mounting base 2 to move synchronously with the mounting base 2 to prevent the backrest and armrests from affecting the movable space between the sofa and the ground and the wall. The presence of the backrest can also balance the center of gravity of the mounting base 2 relative to the support base 1 to a certain extent, thereby maintaining the stability of the mounting base 2 on the support base 1.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A sofa, characterized in that: include: A support base (1), wherein a rear side of the support base (1) is provided with an escape space (1a) penetrating vertically; A mounting seat (2) is slidably arranged on the supporting base (1) along a front-rear direction; A seat cushion, fixed on the mounting seat (2); The driving mechanism (3) is configured to drive the mounting seat (2) to move forward and backward relative to the supporting base (1).

2. The sofa according to claim 1, characterized in that: The driving mechanism (3) comprises a motor (31), a screw rod (32) and a nut (33); the screw rod (32) is extended in the front-rear direction; the motor (31) is configured to drive the screw rod (32) to rotate; the nut (33) is sleeved on the screw rod (32) and can perform linear motion along the screw rod (32); the motor (31) is arranged on one of the mounting seat (2) and the supporting base (1); and the nut (33) is connected to the other of the mounting seat (2) and the supporting base (1).

3. The sofa according to claim 2, characterized in that: The motor (31) is arranged on the mounting seat (2), the driving mechanism (3) further comprises a transmission rod (34), a first end of the transmission rod (34) is provided with a first avoidance hole (34a) extending along the length direction thereof, a second end of the transmission rod (34) is hinged to the mounting seat (2), the transmission rod (34) is further provided with a second avoidance hole (34b) extending along the length direction thereof, two transmission rods (34) are symmetrically arranged relative to the screw rod (32), and the nut (33) is provided with a A first connecting pin (36) is provided, the first connecting pin (36) is inserted into the first avoidance holes (34a) on the two transmission rods (34), and can slide in the first avoidance holes (34a); two second connecting pins (14) are symmetrically provided on the support base (1) relative to the screw rod (32), the two second connecting pins (14) are respectively inserted into the second avoidance holes (34b) on the two transmission rods (34), and can slide in the second avoidance holes (34b).

4. The sofa according to claim 3, characterized in that: The distance between the second connecting pin (14) and the second end of the transmission rod (34) is smaller than the distance between the second connecting pin (14) and the first connecting pin (36).

5. The sofa according to claim 1, characterized in that: The rear side of the escape space (1a) is open.

6. The sofa according to claim 1, characterized in that: The width of the avoidance space (1a) along the front-rear direction of the support base (1) is no greater than 1 / 3 of the width of the support base (1) along the front-rear direction.

7. The sofa according to claim 1, characterized in that: One of the support base (1) and the mounting seat (2) is provided with a guide rail (13) extending in the front-rear direction, and the other is provided with a guide slider (21) slidably matched with the guide rail (13), and the guide slider (21) and the guide rail (13) are engaged with each other.

8. The sofa according to claim 7, characterized in that: One of the support base (1) and the mounting seat (2) is provided with a support slide groove (1b) extending in the front-rear direction, and the other is provided with a support sliding block (22) slidably matched with the support slide groove (1b).

9. The sofa according to any one of claims 1 to 8, characterized in that: The supporting base (1) and the mounting base (2) both adopt a frame structure.

10. The sofa according to any one of claims 1 to 8, characterized in that: It also comprises a backrest and armrests, wherein the backrest and the armrests are both mounted on the mounting seat (2) and move synchronously with the mounting seat (2).

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