阅读说明：本技术 新型沙发床铁架机构 (Novel sofa bed iron frame mechanism ) 是由 陈纪官 陈斌 吴锵锵 张保利 聂建军 于 2021-01-25 设计创作，主要内容包括：本发明涉及一种新型沙发床铁架机构,床框依次铰接,第一框体两侧铰接前脚组件,第一框体和第二框体的两侧连接处铰接中脚组件,前脚组件和中脚组件之间铰接第一连接杆,第二框体两侧连接安装板组件,中脚组件和安装板组件之间铰接第二连接杆,靠背两侧分别连接后支撑板组件,后支撑板组件连接第三连接杆一端,第三连接杆另一端连接第三框架下部的L型连接片,后支撑板组件和L型连接片之间依次铰接第一支撑杆和第二支撑杆,第一支撑杆和第二支撑杆之间设有锁紧弹簧。本发明通过两个互相关联的床框伸展和折叠以及可以旋转的靠背,来实现沙发与床之间相互转换的功能。(The invention relates to a novel sofa bed iron frame mechanism, wherein bed frames are sequentially hinged, front foot assemblies are hinged to two sides of a first frame body, middle foot assemblies are hinged to joints of two sides of the first frame body and a second frame body, a first connecting rod is hinged between the front foot assemblies and the middle foot assemblies, mounting plate assemblies are connected to two sides of the second frame body, a second connecting rod is hinged between the middle foot assemblies and the mounting plate assemblies, two sides of a backrest are respectively connected with a rear supporting plate assembly, the rear supporting plate assembly is connected with one end of a third connecting rod, the other end of the third connecting rod is connected with an L-shaped connecting sheet at the lower part of a third frame, a first supporting rod and a second supporting rod are sequentially hinged between the rear supporting plate assembly and the L-shaped connecting sheet, and a locking. The invention realizes the function of interconversion between the sofa and the bed by the extension and the folding of the two mutually associated bed frames and the rotatable backrest.)

1. The utility model provides a novel sofa bed iron stand mechanism which characterized in that: the backrest comprises a first frame body, a second frame body, a backrest, a first connecting rod, a second connecting rod, a third connecting rod, a power-assisted spring, a locking spring, a rear supporting plate assembly, a first supporting rod, a second supporting rod, a front foot assembly, a middle foot assembly and a mounting plate assembly;

the first framework, the second framework and the backrest are sequentially hinged, the two sides of the first framework are respectively hinged with the front foot assembly, the two sides of the first framework and the two sides of the second framework are respectively hinged with the middle foot assembly, the front foot assembly and the middle foot assembly are respectively hinged with the first connecting rod, the two sides of the second framework are respectively connected with the installation plate assembly, the middle foot assembly and the installation plate assembly are hinged with the second connecting rod, the rear supporting plate assembly is fixed on the two sides of the sofa, the second framework and the rear supporting plate assembly are respectively connected with the two ends of the power spring, the rear supporting plate assembly is connected with one end of the third connecting rod, the other end of the third connecting rod is connected with the L-shaped connecting piece at the lower part of the third frame, the rear supporting plate assembly is sequentially hinged with the first supporting rod and the second supporting rod, and the.

2. The novel divan bed iron frame mechanism of claim 1, wherein: the backrest is characterized by further comprising a soft package plate, and the end part and the side part of the backrest are respectively connected with the soft package plate.

Technical Field

The invention relates to a sofa bed, in particular to a novel sofa bed iron frame mechanism.

Background

Storage and comfort are emphasized in modern residential environments. In some densely populated cities and countries, storage and organization has not been limited solely to everyday appliances. And more because some living environments are not very abundant now, so that living areas are very compact. Therefore, people usually arrange their living environment better in a limited space. The bed is one of the essential household articles for people in the family life. However, beds typically have a large footprint and often occupy a very substantial amount of living space.

In order to improve the reasonable usable area, a larger activity space is obtained by improving the use mode of the bed. Therefore, the sofa bed is formed. The sofa bed enables people to obtain larger living activity space through the mutual conversion between the sofa and the bed, greatly improves the space utilization rate, and enables people to enjoy more comfortable living environment in the limited space.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a novel sofa bed iron frame mechanism, which realizes the function of interconversion between a sofa and a bed through the extension and folding of two mutually associated bed frames and a rotatable backrest.

In order to solve the technical problem, the invention is realized as follows:

the utility model provides a novel sofa bed iron stand mechanism which characterized in that: the backrest comprises a first frame body, a second frame body, a backrest, a first connecting rod, a second connecting rod, a third connecting rod, a power-assisted spring, a locking spring, a rear supporting plate assembly, a first supporting rod, a second supporting rod, a front foot assembly, a middle foot assembly and a mounting plate assembly;

the first framework, the second framework and the backrest are sequentially hinged, the two sides of the first framework are respectively hinged with the front foot assembly, the two sides of the first framework and the two sides of the second framework are respectively hinged with the middle foot assembly, the front foot assembly and the middle foot assembly are respectively hinged with the first connecting rod, the two sides of the second framework are respectively connected with the installation plate assembly, the middle foot assembly and the installation plate assembly are hinged with the second connecting rod, the rear supporting plate assembly is fixed on the two sides of the sofa, the second framework and the rear supporting plate assembly are respectively connected with the two ends of the power spring, the rear supporting plate assembly is connected with one end of the third connecting rod, the other end of the third connecting rod is connected with the L-shaped connecting piece at the lower part of the third frame, the rear supporting plate assembly is sequentially hinged with the first supporting rod and the second supporting rod, and the.

Novel sofa bed iron stand mechanism, its characterized in that: the backrest is characterized by further comprising a soft package plate, and the end part and the side part of the backrest are respectively connected with the soft package plate.

The invention has the beneficial effects that: the folding device comprises two linkage mechanisms, wherein the linkage mechanisms do not interfere with each other, and the angles of the two frame bodies randomly change when the two frame bodies are unfolded and folded, so that the operation of different users is facilitated;

the backrest and the folding mechanism are separated, and the backrest iron frame is directly placed on the folding iron frame during packaging, so that the packaging space is reduced, the packaging and the transportation are convenient, and the cost is saved (figure one);

the power-assisted spring is added, when the bedstead is opened and folded, the power-assisted spring provides power to relieve the burden of a user, and the user can more easily and conveniently open and fold the bedstead;

the backrest is turned over by adopting a plurality of movable supporting points to rotate, so that the distance between the backrest and the soft package baffle of the sofa is smaller after the backrest is flatly placed. And have the auto-lock function of putting down, prevented to step on the potential safety hazard of pressing back of the body headrest direction back upset, the user is lying more comfortable safety back.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

fig. 1 is a schematic view of a furled state.

Fig. 2a shows a first frame opening process.

Fig. 2b shows a second opening process of the first frame.

Fig. 2c shows a third opening process of the first frame.

Fig. 3a shows a first opening process of the second frame body.

Fig. 3b shows a second frame opening process two.

Fig. 3c shows a third process of opening the second frame body.

Fig. 3d shows a fourth opening process of the second frame body.

Fig. 4a shows the first process of opening the backrest.

Fig. 4b shows the second process of opening the backrest.

Fig. 4c shows the third process of opening the backrest.

Fig. 4d shows the first process of retracting the backrest.

Fig. 4e illustrates the second process of retracting the backrest.

Fig. 5 is a schematic view of the unfolded state.

Detailed Description

As shown in fig. 1 and 5: a novel sofa bed iron frame mechanism comprises a first frame body 1, a second frame body 2, a backrest 3, a first connecting rod 4, a second connecting rod 5, a third connecting rod 6, a power spring 8, a locking spring 9, a rear supporting plate component 10, a first supporting rod 11, a second supporting rod 12, a front foot component 13, a middle foot component 14, a mounting plate component 15 and an L-shaped connecting sheet 20;

the first frame body, the second frame body and the backrest are sequentially hinged, front foot assemblies are respectively hinged to two sides of the first frame body, middle foot assemblies are respectively hinged to two sides of the first frame body and two sides of the second frame body, a first connecting rod is hinged between the front foot assemblies and the middle foot assemblies, two sides of the second frame body are respectively connected with an installation plate assembly, a second connecting rod is hinged between the middle foot assemblies and the installation plate assembly, rear supporting plate assemblies are fixed to two sides of the sofa, the second frame body and the rear supporting plate assemblies are respectively connected with two ends of a power-assisted spring, the rear supporting plate is connected with one end of a third connecting rod, the other end of the third connecting rod is connected with an L-shaped connecting plate 20 at the lower part of the third frame, a first supporting rod and a second supporting rod are sequentially hinged between the rear supporting plate and; the end part and the side part of the backrest are respectively connected with the soft packing plate.

In the closed state (sofa state), the first frame 1 is pulled up manually to change the angle formed by the first frame 1 and the middle leg assembly 14, and at this time, the angle of the front leg assembly 13 opened by the driving of the first connecting rod 4 is also changed (fig. 2a, 2b and 2 c). When the first frame body 1 is pulled up by a certain angle and then pulled back, the second frame body 2 is lifted up from the back support plate 10 under the driving of the middle foot component 14, the power-assisted tension spring 8 provides power to easily lift the second frame body 2, and when the rotation angle of the second frame body 2 is greater than 120 degrees, the included angle between the first frame body 1 and the middle foot component 14 can become 90 degrees under the action of gravity, and at the moment, the front foot is completely opened under the action of the first connecting rod 4. When the first frame body 1 is put down and the second connecting rod 5 is used, the foot assembly 14 and the second frame body 2 also form a 90-degree included angle, and the first frame body 1 and the second frame body 2 are on the same horizontal plane (fig. 3a, 3b, 3c and 3 d). Finally, the backrest is turned over, and the backrest 3 and the whole are positioned on the same horizontal plane under the support of the second frame body 2;

the backrest 3 is fixed at an initial position (figure 4 a) under the action of a limit point 17, the backrest presses a support point 19 when the backrest 3 is turned over, the riveting point of the first support rod 11 and the second support rod 12 and the two ends of the locking spring 9 are on the same straight line when the backrest is turned over to a position (figure 4 b), the connecting point of the first support rod and the second support rod can be upwards protruded when the three-point position is staggered under the tension of the power-assisted spring during continuous turning, a limit block 18 is arranged on the second support rod 2 to prevent the first support rod and the second support rod from upwards protruding, and the mechanism forms self-locking (figure 4 c). When the backrest 3 is folded, the first support rod and the second support rod can be downwards sunken due to the fact that the limit points can limit the rotation of the first support rod 11 (fig. 4 d), when the connecting point of the first support rod and the second support rod and the hanging point of the locking spring cross the same straight line, the mechanism is successfully unlocked, and the backrest 3 can be successfully folded (fig. 4 e).