Movable sofa backrest

Abstract

A movable sofa backrest comprises a sliding rail (1) installed in a sofa, a set of leaning mechanism is arranged on the sliding rail (1) in a sliding mode, the leaning mechanism comprises a pair of sliding supporting arms (2), side plates (3) and a backrest body (4), and a roller sliding mechanism is arranged at one end of each sliding supporting arm (2); the sofa has the advantages that the leaning mechanism can be moved and adjusted along the outer edge of the sofa as required, the sitting posture and view angle of people on the sofa are changed, the supporting structure is stable, different requirements are met, and the home space can be better utilized.

Description

Technical Field

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

[0002] At present, sofas are one of the most commonly used furniture and can be placed in living rooms, conference rooms and offices, greatly facilitating our daily lives. Most existing sofa backrests are immovable and have a relatively fixed structure, resulting in a single usage scenario and great limitations. There is a lack of a sofa backrest that can be moved and adjusted along the outer edge of the sofa to expand the usage scenarios. Utility Model Content

[0003] The purpose of the utility model is to provide a movable sofa backrest in view of the above-mentioned shortcomings.

[0004] The utility model comprises a slide rail installed in the sofa, on which a group of leaning mechanisms are slidably arranged.

[0005] The leaning mechanism includes a pair of sliding arms, side panels and a backrest.

[0006] A roller sliding mechanism is arranged at one end of the sliding support arm, and the roller sliding mechanism slides in the slide rail. The side plate is arranged at the other end of a pair of sliding support arms, and the backrest is arranged on the top of the sliding support arm.

[0007] The sliding support arm is hook-shaped, and the side plate is detachably mounted on a pair of sliding support arms through bolts.

[0008] A pair of slide grooves are arranged at the bottom of the slide rail, and an arm avoidance area is formed between the pair of slide grooves.

[0009] The roller sliding mechanism includes a vehicle body and a pair of horizontal pulleys, which are mirror-distributed and installed at both ends of the vehicle body. Two pairs of towing pulleys are arranged at the bottom of the vehicle body, and the towing pulleys are located between the pair of horizontal pulleys. One end of the sliding support arm is detachably installed at the bottom of the vehicle body by bolts.

[0010] Two pairs of top pulleys are arranged on the top of the vehicle body.

[0011] The roller sliding mechanism is located in the slide rail, the horizontal pulley slides along the inner wall of the slide rail, the dragging pulley slides along the slide groove, and the sliding support arm is located in the support arm avoidance area.

[0012] The sliding support arm is provided with a side wall pulley, the pulley seat of the side wall pulley is detachably mounted on the sliding support arm, and the side wall pulley is located below the vehicle body.

[0013] A sliding plate is arranged on the inner wall of the sofa, the sliding plate is located below the sliding rail, and the side wall pulley slides along the sliding plate.

[0014] The diameter of the horizontal pulley is larger than the diameter of the towing pulley.

[0015] The utility model has the advantages that the leaning mechanism can be moved and adjusted along the outer edge of the sofa according to needs, so as to change the sitting posture and viewing angle of a person on the sofa; the supporting structure is stable, suitable for different needs, and can better utilize the home space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 This utility model Figure 1 Schematic diagram of the local enlarged structure.

[0018] Figure 3 It is a structural schematic diagram of the leaning mechanism of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the roller sliding mechanism of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the utility model installed on a sofa. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", etc. appear in the description of the present invention, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. 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] As shown in the accompanying drawings, the utility model comprises a slide rail 1 installed in the sofa, and a group of leaning mechanisms are slidably arranged on the slide rail 1.

[0027] The leaning mechanism includes a pair of sliding arms 2, side panels 3 and a backrest 4.

[0028] A roller sliding mechanism is provided at one end of the sliding arm 2 , and the roller sliding mechanism slides in the slide rail 1 . The side plate 3 is installed at the other end of a pair of sliding arms 2 , and the backrest 4 is installed on the top of the sliding arm 2 .

[0029] The sliding support arms 2 are hook-shaped, and the side plates 3 are detachably mounted on a pair of sliding support arms 2 by means of bolts.

[0030] A pair of slide grooves 10 are provided at the bottom of the slide rail 1 , and an arm avoidance area 11 is formed between the pair of slide grooves.

[0031] The roller sliding mechanism includes a vehicle body 5 and a pair of horizontal pulleys 6, which are mirror-distributed and installed at both ends of the vehicle body 5. Two pairs of towing pulleys 7 are arranged at the bottom of the vehicle body 5, and the towing pulleys 7 are located between the pair of horizontal pulleys 6. One end of the sliding arm 2 is detachably installed at the bottom of the vehicle body 5 by bolts.

[0032] Two pairs of top pulleys 8 are arranged on the top of the vehicle body 5 .

[0033] The roller sliding mechanism is located in the slide rail 1 , the horizontal pulley 6 slides along the inner wall of the slide rail 1 , the dragging pulley 7 slides along the slide groove 10 , and the sliding support arm 2 is located in the support arm avoidance area 11 .

[0034] A side wall pulley 9 is provided on the sliding support arm 2 . The pulley seat of the side wall pulley 9 is detachably mounted on the sliding support arm 2 . The side wall pulley 9 is located below the vehicle body 5 .

[0035] A sliding plate 12 is arranged on the inner wall of the sofa, and the sliding plate 12 is located below the slide rail 1 , and the side wall pulley 9 slides along the sliding plate 12 .

[0036] The diameter of the horizontal pulley 6 is larger than the diameter of the towing pulley 7 .

[0037] Embodiment 1: The vehicle body 5 slides along the inner wall of the slide rail 1. When sliding, the horizontal pulley 6 rolls along the inner wall of the slide rail 1, and the drag pulley 7 rolls along the slide groove 10. Since the slide rail 1 is arc-shaped, the horizontal pulley 6 plays a guiding role, so that the side wall of the drag pulley 7 will not contact the inner wall of the slide rail 1 to generate friction, so that the sliding is smoother. When the leaning mechanism slides into place, the user sits on the sofa and leans on the backrest 4. At this time, a pressure is applied to the backrest 4, and the pressure causes the sliding arm 2 to tilt backward. The side wall pulley 9 and the horizontal pulley 6 simultaneously bear the pressure of the back, so that the leaning mechanism remains stable during use. The sliding arm 2 is in the shape of a hook, so that the slide rail 1 can be installed inside the sofa, and the overall structure of the sofa is simpler and more convenient to use. A sliding plate 12 is arranged on the inner wall of the sofa, and the side wall pulley 9 is supported by the sliding plate 12, so that the backrest 4 rotates more smoothly.

Claims

1. A movable sofa backrest, comprising a slide rail (1) installed in the sofa, a set of leaning mechanisms slidably arranged on the slide rail (1), Features The leaning mechanism comprises a pair of sliding arms (2), a side plate (3) and a backrest (4). A roller sliding mechanism is arranged at one end of the sliding support arm (2), and the roller sliding mechanism slides in the slide rail (1). The side plate (3) is installed at the other end of a pair of sliding support arms (2), and the backrest (4) is installed on the top of the sliding support arm (2).

2. A movable sofa backrest according to claim 1, characterized in that: The sliding support arm (2) is in the shape of a hook, and the side plate (3) is detachably mounted on a pair of sliding support arms (2) by means of bolts.

3. The movable sofa backrest according to claim 1, characterized in that: A pair of slide grooves (10) are provided at the bottom of the slide rail (1), and an arm avoidance area (11) is formed between the pair of slide grooves.

4. The movable sofa backrest according to claim 3, characterized in that: The roller sliding mechanism comprises a vehicle body (5) and a pair of horizontal pulleys (6), wherein the pair of horizontal pulleys (6) are mirror-distributed and mounted at both ends of the vehicle body (5), two pairs of towing pulleys (7) are arranged at the bottom of the vehicle body (5), and the towing pulleys (7) are located between the pair of horizontal pulleys (6), and one end of the sliding support arm (2) is detachably mounted on the bottom of the vehicle body (5) by means of bolts.

5. The movable sofa backrest according to claim 4, characterized in that: Two pairs of top pulleys (8) are arranged on the top of the vehicle body (5).

6. The movable sofa backrest according to claim 5, characterized in that: The roller sliding mechanism is located in the slide rail (1), the horizontal pulley (6) slides along the inner wall of the slide rail (1), the dragging pulley (7) slides along the slide groove (10), and the sliding support arm (2) is located in the support arm avoidance area (11).

7. The movable sofa backrest according to claim 6, characterized in that: A side wall pulley (9) is arranged on the sliding support arm (2); a pulley seat of the side wall pulley (9) is detachably mounted on the sliding support arm (2); and the side wall pulley (9) is located below the vehicle body (5).

8. The movable sofa backrest according to claim 7, characterized in that: A sliding plate (12) is arranged on the inner wall of the sofa, the sliding plate (12) is located below the slide rail (1), and the side wall pulley (9) slides along the sliding plate (12).

9. The movable sofa backrest according to claim 8, characterized in that: The diameter of the horizontal pulley (6) is greater than the diameter of the towing pulley (7).

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