CN102166077A - Telescopic-deformation sofa bed - Google Patents

Abstract

The invention relates to a stretchable and deformable sofa bed. The technical problem to be solved is that on the basis of the functions of "bed" and "sofa", the provided sofa bed also has the function of lifting the legs to relax, and has the characteristics of convenient use, high reliability and low cost . The technical solution is: a stretchable and deformable sofa bed, including a sofa base, a sofa backrest, a sofa pedal and two bed boards; The rear part of the base, the left and right sides of the rear part of the sofa base are respectively shaped with a chute mechanism for adjusting the six-bar mechanism; the sofa pedal is positioned on the sofa by two six-bar mechanisms on the left and right sides. The front part of the base, the left and right sides of the front part of the sofa base are each equipped with a chute mechanism for adjusting the six-bar mechanism; the first bed board is installed on the sofa backrest, and the second bed board is installed on the sofa pedal and between the sofa base.

Description

A retractable and deformable sofa bed

technical field

The invention relates to a kind of furniture, in particular to a stretchable and deformable sofa bed.

Background technique

Common sofas in daily life are generally composed of a sofa base and a sofa backrest. The position of the sofa backrest is usually fixed or can be adjusted within a small range, so ordinary sofas can only provide the function of "sitting". In recent years, some folding sofa beds have appeared. The backrest of this type of sofa bed can be flattened to realize the function of a bed; Plates, support plates, ratchets and pawls, etc., often have complex structures, low reliability, and are easily damaged. In addition, this kind of folding sofa bed only has the functions of "bed" and "sofa", but does not have the function of lifting the legs to make them relax, so there is still room for improvement.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned deficiencies in the background technology, and to provide a stretchable and deformable sofa bed, which, on the basis of the functions of "bed" and "sofa", also has the function of lifting the legs to make them relax. functions, and has the characteristics of convenient use, high reliability and low cost.

To achieve the above object, the present invention adopts the following technical solutions:

A stretchable and deformable sofa bed, comprising a sofa base, a sofa backrest, a sofa pedal and two bed boards; it is characterized in that: the sofa backrest is positioned behind the sofa base through two six-bar mechanisms on its left and right sides The left and right sides of the rear of the sofa base are each equipped with a chute mechanism for adjusting the six-bar mechanism; the sofa pedal is positioned in front of the sofa base through the two six-bar mechanisms on the left and right sides. The left and right sides of the front of the sofa base are each equipped with a chute mechanism for adjusting the six-bar mechanism; the first bed board is installed on the sofa backrest, and the second bed board is installed on the sofa pedal and the sofa base between.

The six-bar mechanisms on the left and right sides of the sofa backrest are symmetrically arranged; in each six-bar mechanism, the first connecting rod is horizontally fixed in the fan-shaped groove of the sofa base, and is connected with the second connecting rod, the fourth connecting rod and the second connecting rod. The six connecting rods form a parallelogram, and the sixth connecting rod, the fifth connecting rod, the fourth connecting rod and the third connecting rod form another parallelogram; the lower end of the second connecting rod is hinged on the first connecting rod, and the The upper end of the second connecting rod is hinged with the front end of the fourth connecting rod; the third connecting rod is vertically fixed on the backrest of the sofa, and the lower end of the third connecting rod is sequentially connected with the rear end of the fifth connecting rod, the fourth connecting rod from bottom to top. The rear end of the connecting rod is hinged; the upper end of the sixth connecting rod is hinged with the front ends of the fourth connecting rod and the fifth connecting rod in sequence from top to bottom; Three cross bars are arranged between the three connecting rods, wherein the two ends of the first cross bar are respectively connected to the top of the left third link and the top of the right third link, and the left end of the second cross bar is hinged to the left six The third connecting rod and the fourth connecting rod of the rod mechanism are hinged to the third connecting rod and the fourth connecting rod of the right six-bar mechanism, and the left ends of the third crossbar are respectively hinged to the third connecting rod of the left six-bar mechanism. Rod and the fifth connecting rod, the right end is hinged with the third connecting rod and the fifth connecting rod of the right side six-bar mechanism.

The six-bar mechanisms on the left and right sides of the sofa pedal are symmetrically arranged; in each six-bar mechanism, the rear end of the seventh connecting rod is horizontally fixed on the side plate of the sofa base, and is connected with the tenth connecting rod and the eleventh connecting rod. The rod and the twelfth connecting rod form a parallelogram, and the seventh connecting rod, the eighth connecting rod, the ninth connecting rod and the tenth connecting rod form another parallelogram; the upper end of the eighth connecting rod is hinged on the seventh connecting rod. On the rod, the lower end of the eighth connecting rod is hinged with the rear end of the ninth connecting rod; the ninth connecting rod is horizontally fixed on the sofa pedal, the lower end of the tenth connecting rod is hinged with the ninth connecting rod, and the tenth connecting rod The upper end is hinged with the front end of the eleventh connecting rod and the front end of the seventh connecting rod from top to bottom, and the lower end of the twelfth connecting rod is connected with the rear end of the seventh connecting rod and the eleventh connecting rod from bottom to top. Hinged; and, three cross bars are arranged between the two ninth connecting rods of the left six-bar mechanism and the right six-bar mechanism, wherein the two ends of the fourth cross bar are respectively connected to the front end of the left ninth connecting rod and the right The front end of the ninth connecting rod on the side, the left end of the fifth cross bar is hinged to the ninth and tenth connecting rods of the left six-bar mechanism, and the right end is hinged to the ninth and tenth connecting rods of the right six-bar mechanism , the left end of the sixth crossbar is hinged to the eighth and ninth connecting rods of the left six-bar mechanism, and the right end is hinged to the eighth and ninth connecting rods of the right six-bar mechanism; A seventh crossbar is arranged between the mechanism and the two tenth connecting rods of the six-bar mechanism on the right, the left end of the seventh crossbar is hinged to the seventh and tenth connecting rods of the left six-bar mechanism, and the right end The seventh connecting rod and the tenth connecting rod of the right side six-bar mechanism are hinged.

The chute mechanism includes a C-shaped chute arranged on the side plate of the sofa base and a slider. Slot sliding bearings; wherein, the opening direction of the two first C-shaped chutes at the rear of the sofa base is toward the back and upper side of the sofa base, and the two first sliders are respectively set on the two sixth On the connecting rod, and each sixth connecting rod is provided with a spring that exerts upward tension on the corresponding slider; the opening direction of the two second C-shaped chute at the front of the sofa base is towards the front of the sofa base. Below, the two second sliders are slidably set on the two twelfth connecting rods up and down, and each of the twelfth connecting rods is provided with a spring that applies a downward pulling force to the corresponding slider.

A slide rail is formed on the rear side of the sofa back, and the first bed board is slidably embedded in the slide rail.

The second bed board is composed of component 1 and component 2, wherein the upper end of component 1 is hinged on the seventh crossbar, the lower end of component 2 is hinged on the sixth crossbar, and slide rails are formed on component 1 , the upper end of component two is slidably embedded in the slide rail.

The working principle of the present invention is:

Fig. 1 shows " sofa " state of the present invention, and now the sofa back is in the vertical position, and in the two six-bar mechanisms of the sofa back, the two first slide blocks are all positioned at the lower end of the first C-shaped chute; The pedal is in a horizontal position, and in the two six-bar mechanisms of the sofa pedal, the two second slide blocks are all located at the upper ends of the second C-shaped chute.

When you need to use the "relax" function, you can slide the two second sliders of the sofa pedal to the bottom along the second C-shaped chute. At this time, in the six-bar mechanism on the right side of the sofa pedal, the twelfth connecting rod Turn counterclockwise (with reference to Figure 1, the movement direction of the six-bar mechanism on the left side of the sofa pedal is opposite to that of the right six-bar mechanism), pull the eleventh connecting rod to move backward, and the eleventh connecting rod pulls the tenth connecting rod The rod rotates counterclockwise around the front end of the seventh connecting rod, and the tenth connecting rod pulls up the ninth connecting rod (that is, pulls up the sofa pedal), so that the sofa pedal and the seat surface 20-1 of the sofa base are roughly located in the same plane, and people The legs can be relaxed when sitting down, as shown in Figure 7 and Figure 8. At this time, the distance between the sixth crossbar and the seventh crossbar becomes longer, and the second bed board component two can be stretched along the slide rail of the component one to avoid gaps.

When you need to use the "bed" function, on the basis of the aforementioned "relaxation" function, slide the two first sliders of the sofa back along the first C-shaped chute to the uppermost end. In the six-bar mechanism, the sixth connecting rod rotates counterclockwise (with reference to Figure 1, the movement direction of the six-bar mechanism on the left side of the sofa pedal is opposite to that of the right six-bar mechanism), and the sixth connecting rod acts on the first Four links and the fifth link, the fourth link acts on the third link and the second link at the same time, the third link acts on the fifth link, and the last link is the first link, the second link, The third connecting rod, the fourth connecting rod, the fifth connecting rod and the sixth connecting rod are approximately on the same horizontal line, and the backrest of the sofa fixed by the third connecting rod is also flattened, which is roughly in line with the seat surface of the sofa base and the sofa pedal. In the same plane, realize the function of the bed, as shown in Fig. 5 and Fig. 6 . At this time, the first bed board can be pulled out a certain distance from the sofa backrest to avoid gaps.

The beneficial effects of the present invention are: the present invention adds sofa pedals on the basis of ordinary folding sofas, so that the present invention has the function of lifting the legs to relax them. Moreover, in the present invention, the connection between the sofa backrest and the sofa pedal and the sofa base is connected by a common linkage mechanism in the machinery industry. On the basis of realizing the position adjustment of the sofa backrest and the sofa pedal, it also has the advantages of simple structure and convenient use. , and the characteristics of high reliability of the movement, and the cost is relatively low, and has a broad market prospect.

Description of drawings

Fig. 1 is a right view structure diagram (sofa state) of the present invention.

Fig. 2 is a three-dimensional structural schematic diagram of four six-bar mechanisms in the present invention.

Fig. 3 is a three-dimensional structural schematic view of the present invention in a sofa state.

Fig. 4 is a schematic diagram of the three-dimensional structure of the sofa base in the present invention.

Fig. 5 is a left view structural schematic diagram of the present invention in bed state.

Fig. 6 is a schematic perspective view of the three-dimensional structure of the present invention when it is in a bed state.

Fig. 7 is a schematic diagram of the left view structure of the present invention when it is in a relaxed state.

Fig. 8 is a schematic perspective view of the three-dimensional structure of the present invention in a relaxed state.

Fig. 9 is an enlarged schematic view of the cross-sectional structure of the slider in the present invention.

Fig. 10 is an enlarged schematic view of the three-dimensional structure of the slider in the present invention.

Fig. 11 is an enlarged schematic diagram of the connection relationship between the sofa backrest and the first bed board in the present invention.

Fig. 12 is one of the enlarged schematic diagrams of the connection relationship between component one and component two in the second bed board.

Fig. 13 is the second enlarged schematic diagram of the connection relationship between component one and component two in the second bed board.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.

As shown in FIG. 1 , a stretchable and deformable sofa bed according to the present invention includes a sofa base 20 (as shown in FIG. 4 ), a sofa backrest 16, a sofa pedal 17 and two bed boards.

In order to make the present invention based on the function of "sofa", it also has the function of "bed" and the function of "relaxing" to lift the legs; The mechanism is positioned at the rear of the sofa base, and the left and right sides of the rear of the sofa base are each equipped with a chute mechanism for adjusting the six-bar mechanism; the sofa pedal passes through two six-bar mechanisms on the left and right sides The mechanism is positioned at the front of the sofa base, and a chute mechanism for adjusting the six-bar mechanism is respectively formed on the left and right sides of the sofa base front; the first bed board 18 is installed on the sofa back, and the second The bed board 19 is installed between the sofa pedal and the sofa base.

As shown in Figures 1 and 2, the six-bar mechanisms on the left and right sides of the sofa backrest are arranged symmetrically; in each six-bar mechanism, the first connecting rod 1 is horizontally fixed in the fan-shaped groove 22 at the rear of the sofa base, And it forms a parallelogram with the second connecting rod 2, the fourth connecting rod 4 and the sixth connecting rod 6, and the sixth connecting rod 6, the fifth connecting rod 5, the fourth connecting rod 4 and the third connecting rod 3 form a Another parallelogram; the lower end of the second connecting rod is hinged on the first connecting rod, and the upper end of the second connecting rod is hinged with the front end of the fourth connecting rod; the third connecting rod is vertically fixed on the sofa back, and the third connecting rod The lower end of the connecting rod is hinged with the rear end of the fifth connecting rod and the rear end of the fourth connecting rod from bottom to top; the upper end of the sixth connecting rod is connected with the fourth connecting rod and the fifth connecting rod from top to bottom in sequence. and the two third connecting rods of the left six-bar mechanism and the right six-bar mechanism are provided with three cross bars, wherein the two ends of the first cross bar 1A are respectively connected to the left third connecting rod The top and the top of the third connecting rod on the right side, the left end of the second cross bar 1B is hinged with the third connecting rod and the fourth connecting rod of the left side six-bar mechanism, and the right end is hinged with the third connecting rod and the fourth connecting rod of the right side six-bar mechanism. The left end of the fourth connecting rod and the third cross bar 1C are respectively hinged with the third connecting rod and the fifth connecting rod of the left six-bar mechanism, and the right end is hinged with the third connecting rod and the fifth connecting rod of the right six-bar mechanism.

The six-bar mechanisms on the left and right sides of the sofa pedal are symmetrically arranged; in each six-bar mechanism, the rear end of the seventh connecting rod 7 is horizontally fixed on the side plate 20-2 of the sofa base, and is connected with the tenth connecting rod 10 , the eleventh connecting rod 11 and the twelfth connecting rod 12 enclose a parallelogram, and the seventh connecting rod 7, the eighth connecting rod 8, the ninth connecting rod 9 and the tenth connecting rod 10 enclose another parallelogram; The upper end of the eighth connecting rod is hinged on the seventh connecting rod, the lower end of the eighth connecting rod is hinged with the rear end of the ninth connecting rod; the ninth connecting rod is horizontally fixed on the sofa pedal, and the lower end of the tenth connecting rod is connected to the The ninth connecting rod is hinged, the upper end of the tenth connecting rod is hinged with the front end of the eleventh connecting rod 11 and the front end of the seventh connecting rod from top to bottom, and the lower end of the twelfth connecting rod 12 is sequentially connected with The rear ends of the seventh connecting rod and the eleventh connecting rod are hinged; and three cross bars are arranged between the two ninth connecting rods of the left six-bar mechanism and the right six-bar mechanism, among which the fourth cross bar 1D The two ends are respectively connected to the front ends of the ninth connecting rod on the left and the ninth connecting rod on the right. The left end of the fifth crossbar 1E is hinged to the ninth and tenth connecting rods of the left six-bar mechanism, and the right end is hinged to the The ninth connecting rod and the tenth connecting rod of the right six-bar mechanism, the left end of the sixth crossbar 1F is hinged to the eighth connecting rod and the ninth connecting rod of the left six-bar mechanism, and the right end is hinged to the right end of the right six-bar mechanism. The eighth connecting rod and the ninth connecting rod; the seventh crossbar 1G is arranged between the two tenth connecting rods of the left six-bar mechanism and the right six-bar mechanism, and the left end of the seventh crossbar is hinged The seventh connecting rod and the tenth connecting rod of the six-bar mechanism on the left side are hinged on the seventh connecting rod and the tenth connecting rod of the right side six-bar mechanism.

The chute mechanism includes a C-shaped chute arranged on the side plate of the sofa base and a slider. The bearing 21 of groove sliding; Wherein, the opening direction of two first C-shaped slide grooves 15-1 of sofa base rear portion is toward the back top (as shown in Figure 1) of sofa base, two first slide blocks 13-1 are respectively slidably set on two sixth connecting rods up and down, and each sixth connecting rod is provided with a spring 14 that applies an upward pulling force to the corresponding slide block; the two sixth connecting rods at the front of the sofa base The opening direction of the two C-shaped chute 15-2 is toward the front bottom of the sofa base. A spring 14 that applies a downward pulling force to the corresponding slider is provided on the two connecting rods.

The second bed board 19 is composed of component one 19-1 and component two 19-2, wherein the upper end of component one is hinged on the seventh crossbar, and the lower end of component two is hinged on the sixth crossbar, A slide rail is formed on the first assembly, and the upper end of the second assembly is slidably embedded in the slide rail. A slide rail is formed on the rear side of the sofa back, and the first bed board is slidably embedded in the slide rail, and the embedding method is similar to the component connection of the above-mentioned second bed board. In the present invention, the first bed board can be pulled out from the backrest of the sofa for a certain distance, and the first bed board will not fall due to the relatively large frictional force between the first bed board and the sofa backrest. The component two of the second bed board can also be withdrawn from the component one for a certain distance, so as to avoid larger gaps on the bed surface.

Figures 9 and 10 show the slider described in the present invention. The position of the slider in the C-shaped chute determines the state of the sofa backrest and the sofa pedal; in the six-bar mechanism of the sofa backrest, when the first slider is at the bottom end of the first C-shaped chute, the sofa backrest is in a vertical position , used as a backrest when people sit down and rest; when the first slider slides to the top of the first C-shaped chute, the sofa backrest is flattened and becomes a part of the bed surface for people to lie down and rest. In the six-bar mechanism of the sofa pedal, when the second slider is located at the uppermost end of the second C-shaped chute, the sofa pedal is located at the leg of the person and is lower than the seat surface of the sofa base; when the second slider slides to the second At the bottom of the C-shaped chute, the sofa pedals are flattened and become a part of the bed surface for people to lie down and have a rest. The length of the C-shaped chute is determined according to actual conditions. The length ratio of each rod in the six-bar mechanism is determined according to the actual situation (conventional technology, not described in detail).

Claims (6)

1. A stretchable and deformable sofa bed, comprising a sofa base (20), a sofa backrest (16), a sofa pedal (17) and two bed boards; A six-bar mechanism is positioned at the rear of the sofa base, and a chute mechanism for adjusting the six-bar mechanism is respectively formed on the left and right sides of the sofa base rear; A six-bar mechanism is positioned on the front portion of the sofa base, and a chute mechanism for adjusting the six-bar mechanism is respectively formed on the left and right sides of the sofa base front; the first bed board (18) is installed on the sofa base. On the backrest, the second bed board (19) is installed between the sofa pedal and the sofa base. 2. A stretchable and deformable sofa bed according to claim 1, characterized in that: the six-bar mechanisms on the left and right sides of the sofa backrest are arranged symmetrically; in each six-bar mechanism, the first connecting rod (1) It is horizontally fixed in the fan-shaped groove of the sofa base, and forms a parallelogram with the second connecting rod (2), the fourth connecting rod (4) and the sixth connecting rod (6), and the sixth connecting rod (6) , the fifth connecting rod (5), the fourth connecting rod (4) and the third connecting rod (3) surround another parallelogram; the lower end of the second connecting rod is hinged on the first connecting rod, and the second connecting rod The upper end is hinged with the front end of the fourth connecting rod; the third connecting rod is vertically fixed on the backrest of the sofa, and the lower end of the third connecting rod is sequentially connected with the rear end of the fifth connecting rod and the rear end of the fourth connecting rod from bottom to top. The upper end of the sixth connecting rod (6) is hinged with the front end of the fourth connecting rod and the fifth connecting rod from top to bottom; Three cross bars are arranged between the connecting rods, wherein the two ends of the first cross bar (1A) are respectively connected to the top of the left third connecting rod and the top of the right third connecting rod, and the left end of the second cross bar (1B) The third connecting rod and the fourth connecting rod of the left side six-bar mechanism are hinged, the right end is hinged with the third connecting rod and the fourth connecting rod of the right side six-bar mechanism, and the left end of the third crossbar (1C) is respectively hinged with the left The third connecting rod and the fifth connecting rod of the side six-bar mechanism, the right end is hinged with the third connecting rod and the fifth connecting rod of the right side six-bar mechanism. 3. A kind of telescopically deformable sofa bed according to claim 1 or 2, characterized in that: the six-bar mechanisms on the left and right sides of the sofa pedal are arranged symmetrically; in each six-bar mechanism, the seventh connecting rod ( 7) the rear end is horizontally fixed on the side plate of the sofa base, and forms a parallelogram with the tenth connecting rod (10), the eleventh connecting rod (11) and the twelfth connecting rod (12). The seven connecting rods (7), the eighth connecting rod (8), the ninth connecting rod (9) and the tenth connecting rod (10) form another parallelogram; the upper end of the eighth connecting rod is hinged on the seventh connecting rod , the lower end of the eighth connecting rod is hinged with the rear end of the ninth connecting rod; the ninth connecting rod is horizontally fixed on the sofa pedal, the lower end of the tenth connecting rod is hinged with the ninth connecting rod, and the upper end of the tenth connecting rod is From top to bottom, it is hinged with the front end of the eleventh connecting rod (11) and the front end of the seventh connecting rod, and the lower end of the twelfth connecting rod (12) is sequentially connected with the seventh connecting rod and the eleventh connecting rod from bottom to top. The rear end of the bar is hinged; and three cross bars are arranged between the two ninth connecting rods of the left six-bar mechanism and the right six-bar mechanism, wherein the two ends of the fourth cross bar (1D) are respectively connected to the left No. The front end of the nine connecting rods and the front end of the ninth connecting rod on the right side, the left end of the fifth crossbar (1E) is hinged to the ninth connecting rod and the tenth connecting rod of the left six-bar mechanism, and the right end is hinged to the right six-bar mechanism The ninth and tenth connecting rods, the left end of the sixth crossbar (1F) is hinged to the eighth and ninth connecting rods of the left six-bar mechanism, and the right end is hinged to the eighth connecting rod of the right six-bar mechanism. rod and the ninth connecting rod; the seventh crossbar (1G) is arranged between the two tenth connecting rods of the left six-bar mechanism and the right six-bar mechanism, and the left end of the seventh crossbar is hinged to the left The seventh connecting rod and the tenth connecting rod of the side six-bar mechanism, the right end is hinged with the seventh connecting rod and the tenth connecting rod of the right six-bar mechanism. 4. A stretchable and deformable sofa bed according to claim 3, characterized in that: said chute mechanism comprises a C-shaped chute arranged on the side plate of the sofa base and a slider, said The inner side of the slide block is equipped with a bearing (21) that extends into the C-shaped chute and can slide along the C-shaped chute; wherein, the two first C-shaped chutes (15-1 ) towards the rear upper part of the sofa base, and the two first sliders (13-1) are respectively fitted on the two sixth connecting rods in a sliding up and down manner, and each sixth connecting rod is provided with A spring (14) that applies an upward pulling force to the corresponding slide block; the opening direction of the two second C-shaped slide grooves (15-2) at the front part of the sofa base is towards the front bottom of the sofa base, and the two second slides Blocks (13-2) are slidably sleeved on the two twelfth connecting rods up and down, and each of the twelfth connecting rods is provided with a spring (14) that applies downward pulling force to the corresponding slide block. 5. A stretchable and deformable sofa bed according to claim 4, characterized in that: a slide rail is formed on the rear side of the sofa back, and the first bed board is slidably embedded in the slide rail. 6. A stretchable and deformable sofa bed according to claim 5, characterized in that: said second bed board is composed of component one (19-1) and component two (19-2), wherein component one The upper end is hinged on the seventh crossbar, the lower end of the second assembly is hinged on the sixth crossbar, the first assembly is provided with a slide rail, and the upper end of the second assembly is slidably embedded in the slide rail.

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