CN111887653B - Mechanical extension device of zero-back wall chaise longue and chaise longue - Google Patents

Abstract

The invention discloses a mechanical stretching device of a zero-back wall imperial concubine chair and the imperial concubine chair, which comprise a base, wherein a leg frame and a back frame are arranged on the base, the leg frame is horizontally movably connected with the base, one end of the back frame is rotatably connected with the leg frame, a linkage support is arranged between the back frame and the base, two ends of the linkage support are respectively hinged with the back frame and the base, the linkage support is positioned at the rear side of the leg frame, a cushion is arranged on the leg frame, the cushion extends backwards from the front side of the leg frame into a compensation space of the back frame, and a backrest is arranged on the backrest connecting frame and extends downwards from the top to the upper surface of the cushion.

Description

Mechanical extension device of zero-back wall chaise longue and chaise longue

Technical Field

The invention belongs to the field of chairs, and more particularly relates to a mechanical extension device of a zero-wall chaise longue and the chaise longue.

Background Art

With the development of society, people's pursuit of quality of life is constantly improving. When choosing furniture, consumers are no longer limited to a single function, but more hope to maximize the utilization rate of furniture, which is the modern thinking. For example, for seats or sofas, consumers are more pursuing comfort, such as the ability to provide multiple usage modes such as reading and lying flat. With the continuous deepening of research and development, some functional sofas have also appeared on the market, but these sofas still have shortcomings in multi-mode use. For example, when placed against the wall, it is not convenient to switch between modes.

For example, when the backrest is against the wall, if you want to adjust the angle of the backrest, the backrest will invade the wall space and is not easy to fold down; and in the prior art, for adjustable seats, if the seat cushion 6 and the backrest 7 are integrated, the angle between the seat cushion and the backrest increases when the backrest is folded down, but when the seat cushion is stood up and the seat cushion angle decreases, large wrinkles will inevitably appear at the connection between the seat cushion 6 and the backrest 7, as shown in Figure 9, which also limits the adjustment angle of the seat cushion and the backrest, especially for the seat cushion and backrest with a thickness of more than 15 cm, the problem is more obvious; if the seat cushion and the backrest are split, when the backrest is folded down, there will usually be a large suspended gap between the backrest and the seat cushion.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides a sofa backrest that can prevent the sofa backrest from encroaching backward when the angle is adjusted, so that the sofa can be placed without leaning against the wall, and the backrest angle can be adjusted at will after placement, with a simple structure and high reliability.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanical extension device for a zero-wall chaise longue, comprising a base, on which a leg frame and a back frame are arranged, the leg frame is horizontally movably connected to the base, one end of the back frame is rotatably connected to the leg frame, a linkage bracket is arranged between the back frame and the base, the two ends of the linkage bracket are respectively hinged to the back frame and the base, and the linkage bracket is located on the rear side of the leg frame.

Furthermore, a backrest connecting frame is arranged above the hinge point of the back frame corresponding to the linkage bracket.

Furthermore, the middle portion of the back frame is bent backwards, and a compensation space is formed between the extension line of the backrest connecting frame and the back frame.

Furthermore, a driving mechanism is arranged between the base and the leg frame.

Further, the driving mechanism comprises a linear motor.

Furthermore, the leg frame is provided with rollers, the base is provided with tracks, and the rollers are arranged to roll on the tracks.

Furthermore, a slider is provided on the leg frame, and a slide rail is provided on the base, and the leg frame is slidably connected to the base via the slider and the slide rail.

A zero-wall chaise longue has a leg frame with a seat cushion extending backward from the front side of the leg frame into a compensation space of a back frame, and a backrest extending downward from the top to contact the upper surface of the seat cushion on the backrest connecting frame.

Furthermore, the backrest is detachably connected to the backrest connecting frame.

Furthermore, the thickness of the seat cushion and the backrest are both greater than 15 cm.

Compared with the prior art, the present invention has the following beneficial effects:

1. Through the hinged connection of the back frame, leg frame and linkage bracket, the back frame will not occupy the rear space during the angle adjustment process, and the rear side of the entire chaise longue can be placed directly against the wall;

2. The compensation space is formed by bending the middle part of the back frame backwards, so that when the sofa is fully unfolded, that is, when the backrest is completely flat, the part of the seat cushion located in the compensation space can be extended from under the backrest without a gap between the backrest and the seat cushion; when the backrest is at other angles, there will be no gap between the backrest and the seat cushion; when the sofa is folded, that is, when the backrest is upright, the seat cushion can be just hidden in the compensation space under the backrest;

3. The backrest in the present invention is detachable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a three-dimensional structural diagram of the back frame of the mechanical stretching device of the present invention when it is erected;

FIG2 is a front view of the back frame of the mechanical stretching device of the present invention when it is erected;

FIG3 is a three-dimensional structural diagram of the back frame of the mechanical stretching device of the present invention when it is laid flat;

FIG4 is a front view of the zero-wall chaise longue of the present invention when the backrest is erected;

FIG5 is a front view of the backrest portion of the zero-wall chaise longue of the present invention when tilted;

FIG6 is a front view of the zero-wall chaise longue of the present invention with the backrest laid flat;

FIG7 is a three-dimensional structural diagram of the zero-back-to-wall chaise longue of the present invention with armrests and a backrest erected;

FIG8 is a three-dimensional structural diagram of the zero-wall chaise longue of the present invention with armrests and a backrest laid flat;

FIG. 9 is a schematic diagram of a sofa structure with an adjustable backrest angle in the prior art.

Figure numerals: 1. base; 2. leg frame; 3. back frame; 31. backrest connecting frame; 32. compensation space; 4. linkage bracket; 5. linear motor; 6. seat cushion; 7. backrest; 81. first hinge point; 82. second hinge point; 83. third hinge point; 9. armrest.

DETAILED DESCRIPTION

1 to 8 , the mechanical extension device of the zero-wall chaise longue and the embodiment of the zero-wall chaise longue of the present invention will be further described.

In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do 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 cannot be understood as limiting the specific scope of protection of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "several" and "a number" mean two or more, unless otherwise clearly and specifically defined.

A mechanical extension device for a zero-wall chaise longue comprises a base 1, on which a leg frame 2 and a back frame 3 are arranged, the leg frame 2 is horizontally movably connected to the base 1, one end of the back frame 3 is rotatably connected to the leg frame 2, a linkage bracket 4 is arranged between the back frame 3 and the base 1, two ends of the linkage bracket 4 are respectively hinged to the back frame 3 and the base 1, and the linkage bracket 4 is located at the rear side of the leg frame 2.

As shown in FIGS. 1-3 , the rear side in this embodiment refers to the side close to the wall, that is, the left side in FIG. 2 , and the front side refers to the right side.

As shown in Figure 2, in this embodiment, the hinge between the back frame 3 and the linkage bracket 4 is called the first hinge point 81, the hinge between the linkage bracket 4 and the base 1 is called the second hinge point 82, and the hinge between the back frame 3 and the leg frame 2 is called the third hinge point 83. In this embodiment, the second hinge point 82 is located on the left side of the third hinge point 83, and at the same time, the second hinge point 82 is located on the left side of the first hinge point 81, so that the main body of the back frame 3 is located on the right side of the linkage bracket 4.

As shown in FIG. 1 , at this time the back frame 3 is in an upright state. When it needs to be laid flat, the leg frame 2 moves horizontally to the right. While the back frame 3 is driven to move to the right, the first hinge point 81 at which the back frame 3 is hinged to the linkage bracket 4 moves in a circular motion around the second hinge point 82, so that the inclination angle of the back frame 3 gradually decreases. During the laying flat process, the top end of the back frame 3 will not encroach to the left (encroach on the rear space), that is, when placed against a wall, the back frame 3 can be rotated arbitrarily; then after the backrest 7 is installed, it can also be rotated arbitrarily.

In this embodiment, a backrest connecting frame 31 is preferably provided above the hinge point of the back frame 3 corresponding to the linkage bracket 4. As shown in FIG. 1 , in this embodiment, the backrest connecting frame 31 is integrated with the back frame 3 and is used to install the backrest 7.

In this embodiment, the middle portion of the back frame 3 is preferably bent backwards, and a compensation space 32 is formed between the extension line of the backrest connecting frame 31 and the back frame 3. In this embodiment, the linkage bracket 4 can be bent backwards in the middle portion as needed so that it does not reach the front of the back frame 3.

As shown in FIG. 2 and FIG. 4 , when the back frame 3 is erected, the backrest connecting frame 31 is usually vertical or forms an obtuse angle with the seat cushion 6 so that people can sit comfortably.

When the back frame 3 is erected (the mechanical extension device is folded), the compensation space 32 is actually located on the rear side of the backrest 7, which allows a portion of the seat cushion 6 to extend into the compensation space 32 and be hidden under the backrest 7. When the back frame 3 is laid flat (the mechanical extension device is unfolded), the seat cushion 6 gradually moves out of the compensation space 32 to fill the gap between the backrest 7 and the seat cushion 6.

In this embodiment, the back frame 3 preferably bends backward in a triangular, arc-shaped, square-shaped or the like shape.

In this embodiment, a driving mechanism is preferably provided between the base 1 and the leg frame 2, as shown in Figures 1 and 3. In this embodiment, the driving mechanism is a linear motor 5, which drives the leg frame 2 to move forward and backward, thereby driving the back frame 3 to stand up or lay flat. Of course, the driving mechanism can also be implemented in other ways, such as an electric push rod or a manual adjustment structure.

In this embodiment, the leg frame 2 is preferably provided with rollers, and the base 1 is provided with tracks, and the rollers are arranged to roll on the tracks. As shown in Figure 3, the tracks in this embodiment are C-shaped tracks, and the rollers are stuck in the tracks. When the leg frame 2 moves horizontally back and forth, the movement is smoother and the resistance is small.

Of course, the leg frame 2 can also be connected to the base 1 in the following manner: a slider is provided on the leg frame 2, and a slide rail is provided on the base 1, and the leg frame 2 is slidably connected to the base 1 through the slider and the slide rail.

A zero-wall chaise longue, wherein a seat cushion 6 is arranged on a leg frame 2, and the seat cushion 6 extends backward from the front side of the leg frame 2 to the compensation space 32 of the back frame 3, and a backrest 7 is arranged on the backrest connecting frame 31, and the backrest 7 extends downward from the top to contact the upper surface of the seat cushion 6.

In this embodiment, the backrest 7 is preferably detachably connected to the backrest connecting frame 31 .

Preferably, the thickness of the seat cushion 6 and the backrest 7 are both greater than 15 cm.

As shown in FIG. 7 and FIG. 8 , in this embodiment, a handrail 9 is preferably provided beside the base 1 .

The thicker seat cushion 6 and backrest 7 can not only ensure the comfort of the user, but also when the backrest 7 is erected, part of the seat cushion 6 can move backwards and hide in the compensation space 32 to prevent wrinkles; at the same time, when the backrest 7 is laid flat, part of the seat cushion 6 can be moved out of the compensation space 32 to prevent a gap from appearing between the backrest 7 and the seat cushion 6.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (6)

1. A mechanical extension device for a zero-wall chaise longue, characterized in that: it comprises a base, a leg frame and a back frame are arranged on the base, the leg frame is horizontally movably connected to the base, one end of the back frame is rotatably connected to the leg frame, a linkage bracket is arranged between the back frame and the base, the two ends of the linkage bracket are respectively hinged to the back frame and the base, and the linkage bracket is located at the rear side of the leg frame; A backrest connecting frame is arranged above the back frame corresponding to the hinge point of the linkage bracket, the middle part of the back frame is bent backwards, and a compensation space is formed between the extension line of the backrest connecting frame and the back frame. A seat cushion is arranged on the leg frame, and the seat cushion extends backwards from the front side of the leg frame to the compensation space of the back frame. A backrest is arranged on the backrest connecting frame, and the backrest extends downwards from the top to contact the upper surface of the seat cushion. 2. The mechanical extension device of the zero-wall chaise longue according to claim 1 is characterized in that a driving mechanism is provided between the base and the leg frame. 3. The mechanical extension device of the zero-wall chaise longue according to claim 2, characterized in that the driving mechanism includes a linear motor. 4. The mechanical extension device of the zero-wall chaise longue according to claim 3 is characterized in that: the leg frame is provided with rollers, the base is provided with tracks, and the rollers are arranged to roll on the tracks. 5. The mechanical extension device of the zero-wall chaise longue according to claim 4 is characterized in that: a slider is provided on the leg frame, a slide rail is provided on the base, and the leg frame is slidably connected to the base through the slider and the slide rail. 6. A zero-wall chaise longue comprising the mechanical extension device as claimed in claim 4 or 5, characterized in that the backrest is detachably connected to the backrest connecting frame.