Sofa backrest driving linkage structure

Abstract

The utility model discloses a sofa backrest drive linkage structure relates to the field of sofa, including sofa seat, one side of sofa seat is equipped with drive motor, the output shaft of drive motor is fixedly connected with first rotary lever through the joint, the outer wall of first rotary lever is installed with back rest, the outer wall fixed connection of first rotary lever has first synchronous wheel, the outer wall of first synchronous wheel is installed with synchronous belt, the inside fixed mounting of sofa seat has second rotary lever, the outer wall fixed connection of second rotary lever has second synchronous wheel, the outer wall installation of second rotary lever has leg support plate, through starting drive motor, can make first rotary lever rotate, make back rest overturn, drive first synchronous wheel rotation, can make second synchronous wheel rotate, make leg support plate of second rotary lever outer wall installation overturn simultaneously, play the effect of conveniently supporting and relaxing the leg of user while adjusting backrest.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sofa, concretely is a sofa backrest drive linkage structure. BACKGROUND

[0002] The sofa is a kind of furniture, mainly for people to sit and lie, from structure and appearance, it usually has a solid frame, the material of frame can be wood, metal or the combination of both.For example, the common solid wood frame sofa, its frame uses hard solid wood to create, like oak, birch etc., can provide stable support for sofa.Metal frame sofa can use stainless steel or iron etc.Material, the sofa of this frame often has more modern appearance and shape, the backrest of current sofa is often fixed structure, although the backrest of part sofa can be adjusted, but there is great limitation, therefore need a sofa backrest drive linkage structure.

[0003] The existing sofa backrest drive linkage structure is inconvenient to support and relax legs while adjusting backrest when using, affect the comfort of user's sitting and lying, and backrest often uses single sponge to fill, and the comfort is poor, so there is an urgent need for a sofa backrest drive linkage structure. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a sofa backrest drive linkage structure to solve the problems of inconvenient to support and relax legs while adjusting backrest of the existing sofa backrest drive linkage structure and poor comfort of backrest.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sofa backrest drive linkage structure, including sofa seat, the side of sofa seat is installed with drive motor, the output shaft of drive motor is fixedly connected with first rotary lever through coupling, the outer wall of first rotary lever is installed with backrest board, the outer wall of first rotary lever is fixedly connected with first synchronous wheel, the outer wall of first synchronous wheel is installed with synchronous belt, the inside of sofa seat is installed with second rotary lever, the outer wall of second rotary lever is fixedly connected with second synchronous wheel, the outer wall of second rotary lever is installed with leg support plate.

[0006] The outer wall of backrest board is installed with back cushion, the inside of back cushion is installed with latex filling layer, the outer wall of back cushion is fixedly connected with waterproof interlayer, the outer wall of waterproof interlayer is fixedly connected with natural leather layer.

[0007] Preferably, the sofa seat constitutes rotary structure with backrest board through first rotary lever, and the sofa seat constitutes rotary structure with leg support plate through second rotary lever.

[0008] Preferably, the first synchronous wheel is in rotational connection with the sofa seat through a first rotating rod, and the first synchronous wheel is in meshing connection with the synchronous belt.

[0009] Preferably, the synchronous belt is in meshing connection with a second synchronous wheel, and the first rotating rod and the second rotating rod are arranged in parallel.

[0010] Preferably, the cushion is sleeved on the outer wall of the latex filling layer, and is tightly attached between the waterproof interlayer.

[0011] Preferably, the waterproof interlayer is tightly attached between the natural leather layer, and the cushion and the natural leather layer are arranged in parallel.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1、 the utility model discloses a driving motor, a first rotating rod, a back rest, a first synchronous wheel, a second rotating rod, a second synchronous wheel and leg support plate are set up, and through starting the driving motor, can make the first rotating rod rotate, make the back rest overturn, can carry out the back leaning adjustment to the user's back, drive the first synchronous wheel to rotate, can make the second synchronous wheel rotate, make the leg support plate of the second rotating rod outer wall installation overturn simultaneously, play the effect of conveniently supporting the user's leg relaxation while adjusting the backrest, improve the comfort of user's sitting and lying.

[0014] 2、 the utility model discloses a cushion, a latex filling layer, a waterproof interlayer and a natural leather layer are set up, and the inside fixed connection of the cushion has the latex filling layer, can improve the softness and plasticity of the cushion, make the cushion better adhere to the human body curve, the outer wall fixed connection of the cushion has waterproof interlayer, can prevent water from entering the cushion when cleaning, the outer wall fixed connection of waterproof interlayer has natural leather layer, can improve the skin of the cushion, thereby improving the comfort of the cushion. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the sofa seat perspective drawing of the utility model;

[0017] Figure 3 It is the back rest perspective drawing of the utility model;

[0018] Figure 4 It is the three-dimensional sectional view of the utility model cushion.

[0019] In the figure: 1, sofa seat; 2, drive motor; 3, first rotary rod; 4, backrest; 5, first synchronous wheel; 6, synchronous belt; 7, second rotary rod; 8, second synchronous wheel; 9, leg support plate; 10, cushion; 11, latex filling layer; 12, waterproof interlayer; 13, natural leather layer. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model and cannot be understood as limiting the utility model.

[0021] The embodiments will be described below according to the overall structure of the utility model.

[0022] Please refer to Figures 1-4 A sofa backrest drive linkage structure, including sofa seat 1, one side of sofa seat 1 is installed with drive motor 2, the output shaft of drive motor 2 is fixedly connected with first rotary rod 3 through coupling, the outer wall of first rotary rod 3 is installed with backrest 4, the outer wall of first rotary rod 3 is fixedly connected with first synchronous wheel 5, the outer wall of first synchronous wheel 5 is installed with synchronous belt 6, the inside of sofa seat 1 is installed with second rotary rod 7, the outer wall of second rotary rod 7 is fixedly connected with second synchronous wheel 8, the outer wall of second rotary rod 7 is installed with leg support plate 9, sofa seat 1 is through first rotary rod 3 and backrest 4 and constitutes rotating structure, and sofa seat 1 is through second rotary rod 7 and leg support plate 9 and constitutes rotating structure, first synchronous wheel 5 is through first rotary rod 3 and sofa seat 1 and constitutes rotating structure, and first synchronous wheel 5 is engagedly connected with synchronous belt 6, synchronous belt 6 is engagedly connected with second synchronous wheel 8, and first rotary rod 3 and second rotary rod 7 are parallelly arranged, can be convenient for supporting relaxation to leg while adjusting backrest.

[0023] Please refer to Figures 1-4 A sofa backrest drive linkage structure, the outer wall of backrest 4 is installed with cushion 10, the inside of cushion 10 is installed with latex filling layer 11, the outer wall of cushion 10 is fixedly connected with waterproof interlayer 12, the outer wall of waterproof interlayer 12 is fixedly connected with natural leather layer 13, cushion 10 is set on the outer wall of latex filling layer 11, and cushion 10 is tightly attached between waterproof interlayer 12, waterproof interlayer 12 is tightly attached between natural leather layer 13, and cushion 10 is parallelly arranged with natural leather layer 13, can improve the comfort of cushion 10.

[0024] Working principle: in use, by starting the driving motor 2, the first rotating rod 3 can be rotated, so that the backrest 4 is turned over, the back of the user can be adjusted, the first synchronous wheel 5 is driven to rotate, because the first synchronous wheel 5 is meshed with the synchronous belt 6, and the synchronous belt 6 is meshed with the second synchronous wheel 8, the second synchronous wheel 8 is rotated, so that the leg support plate 9 installed on the outer wall of the second rotating rod 7 is turned over at the same time, the leg support plate 9 supports the legs of the user, the backrest 4 is installed on the outer wall of the backrest 4, and the latex filling layer 11 is fixedly connected in the backrest 4, which can improve the softness and plasticity of the backrest 4, so that the backrest 4 can better fit the human body curve, the waterproof interlayer 12 is fixedly connected on the outer wall of the backrest 10, which can prevent water from entering the backrest 10 during cleaning, the natural leather layer 13 is fixedly connected on the outer wall of the waterproof interlayer 12, which can improve the skin friendliness of the backrest 10, so that the use process of the device is completed, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0025] The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only a simplified description for the convenience of describing the utility model, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the protection scope of the utility model.

[0026] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A sofa backrest driving linkage structure comprising a sofa seat (1), characterized in that: The side of the sofa seat (1) is provided with a driving motor (2), the output shaft of the driving motor (2) is fixedly connected with a first rotating rod (3) through a shaft coupling, the outer wall of the first rotating rod (3) is provided with a back rest (4), the outer wall of the first rotating rod (3) is fixedly connected with a first synchronous wheel (5), the outer wall of the first synchronous wheel (5) is provided with a synchronous belt (6), the inside of the sofa seat (1) is provided with a second rotating rod (7), the outer wall of the second rotating rod (7) is fixedly connected with a second synchronous wheel (8), the outer wall of the second rotating rod (7) is provided with a leg support plate (9); The outer wall of the back rest (4) is provided with a cushion (10), the inside of the cushion (10) is provided with a latex filling layer (11), the outer wall of the cushion (10) is fixedly connected with a waterproof interlayer (12), and the outer wall of the waterproof interlayer (12) is fixedly connected with a natural leather layer (13).

2. The sofa back drive linkage structure according to claim 1, characterized in that: The sofa seat (1) and the back rest (4) constitute a rotating structure through the first rotating rod (3), and the sofa seat (1) and the leg support plate (9) constitute a rotating structure through the second rotating rod (7).

3. The sofa back drive linkage of claim 1, wherein: The first synchronous wheel (5) and the sofa seat (1) constitute a rotating structure through the first rotating rod (3), and the first synchronous wheel (5) is meshed with the synchronous belt (6).

4. The sofa back drive linkage of claim 1, wherein: The synchronous belt (6) is meshed with the second synchronous wheel (8), and the first rotating rod (3) and the second rotating rod (7) are arranged in parallel.

5. The sofa back drive linkage of claim 1, wherein: The cushion (10) is sleeved on the outer wall of the latex filling layer (11), and the cushion (10) is tightly attached to the waterproof interlayer (12).

6. The sofa back drive linkage of claim 1, wherein: The waterproof interlayer (12) and the natural leather layer (13) are tightly attached, and the cushion (10) and the natural leather layer (13) are arranged in parallel.

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