WO2011082683A1 - Permanently steady safe chair - Google Patents

Abstract

A permanently steady safety chair is provided. A forward end of a left side beam floor support (41) and a forward end of a right side beam floor support (42) are fixedly connected with a left front leg (31) of a left front leg assembly and a right front leg (32) of a right front leg assembly respectively. The middle sections of the left and right side beam floor supports (41, 42) are fixedly connected with lower ends of a left back leg (21) and a right back leg (22) of a backrest assembly respectively. The back ends of the left and right side beam floor supports (41, 42) touch the floor and come into being a support. The above solution makes the pivot point move backwards when the chair inclines backwards, such that the possibility of backward overturn is reduced, even if the chair is placed on a slope with small gradient, for example, not more than 15 degrees. Moreover, the whole chair is broken into a seat board assembly, a backrest assembly, a left/right front leg assembly and a left/right side beam floor support assembly by four-section-packaging, such that packing material, packing volume and logistics cost are effectively saved.

Description

 Constant stability safety chair

TECHNICAL FIELD The present invention relates to the field of furniture technology, and relates to a chair, and more particularly to a constant stability safety chair.

Background technique

 Chairs are commonly used furniture. Most of today's chairs have backrests and four legs fall directly to the ground. Thus, when the chair is placed on a slope or the person sitting on the chair leans back, the chair is easily tipped over, causing a lot of trouble.

Summary of the invention

 The technical problem solved by the present invention is to provide a constant stability safety chair to reduce the possibility of the chair being tilted backward.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A constant stability safety chair includes a seat plate assembly member 1, a backrest assembly member 2 and left and right front leg assembly members 3, and a left and right side beam floor support assembly member 4, wherein the left and right side beam floor support assembly members 4 are included There are a left side beam landing support 41 and a right side beam floor support 42. The front ends of the left side beam floor support 41 and the right side beam floor support 42 are respectively fixed to the left front leg 31 and the right front leg 32 of the left and right front leg assemblies. The middle portion is fixedly connected to the lower left leg 21 and the lower rear leg 22 of the backrest assembly, respectively, and the rear end is grounded to form a support.

 Wherein, the left side beam landing support 41 and the right side beam landing support 42 rear end grounding portion are a smooth contact surface.

 A connecting strip may be fixed between the left side beam landing support 41 and the right side beam floor support 42 , and the connecting strip may include a front connecting strip 43 and a rear connecting strip 44 . Compared with the prior art, the utility model has the following beneficial effects: The utility model adopts the left side beam floor support 1, the front end of the right side beam floor support 2 and the left front leg 3 and the right front leg 4 of the left and right front leg assembly respectively. The fixed connection is fixedly connected to the left rear leg 5 of the backrest assembly and the lower end of the right rear leg 6, respectively, and the rear end is grounded to form a support. Rotate the fulcrum when the chair is tilted backwards. It can effectively reduce the possibility of the chair tilting backwards, and put it on the slope with less slope, for example, on the slope of no more than 15 degrees, it is also not easy to tip backward. In addition, the utility model adopts four-part SKD packaging. In this way, the entire chair is decomposed into a seat plate assembly, a backrest assembly, left and right front leg assemblies, and left and right side beam floor support assemblies, which can effectively save packaging materials, packaging space and logistics costs.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the principle of preventing a chair from tipping over;

 2 is a schematic structural view of a specific embodiment of the constant stability safety chair of the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings.

Referring to Figure 1, for a prior art chair, when it is tipped over, the pivot point is rotated. It is the contact point of the back leg of the chair with the ground. The moment M 1 generated by the backward force F at this time should be greater than the moment M 2 generated by the downward gravity G.

 If you move the pivot point 0 backwards, for example, at 0 '. To tilt the chair backwards, the torque M l ' generated by F' is also greater than the torque M 2 generated by gravity G. However, since the position of 0' is on the back side of the back leg of the chair, the required force F' needs to be large, for example, someone who tries to pull the back of the chair backwards or someone who pushes the seat on the chair in front. However, these conditions are extremely extreme and generally do not occur. Therefore, in the case where the pivot point is moved backward, the chair rarely appears to be tilted backward.

 To this end, referring to FIG. 2, the constant stability safety chair of a specific embodiment of the present invention implemented according to the above principle mainly includes:

 The seat plate assembly 1, the backrest assembly 2 and the left and right front leg assembly 3, further comprising left and right side beam floor support assemblies 4, the left and right side beam floor support assemblies 4 including the left side beam floor support 41 and the right side The beam landing support 42, the front ends of the left side beam landing support 41 and the right side beam floor support 42 are fixedly connected to the left front leg 31 and the right front leg 32 of the left and right front leg assembly 3, respectively, for example, the portion near the rear end and the backrest respectively The lower left leg 21 and the lower rear leg 22 of the assembly 2 are fixedly connected, and the rear end is grounded to form a support.

 In addition, it should be noted that the left-side beam landing support 41 and the rear-end grounding portion of the right-hand beam floor support 42 are smooth contact surfaces adapted to the ground (for example, the grounding portion of the rear end is smooth and flush with the ground), and can also be effective. Increase the contact area.

 In addition, a connecting strip may be fixed between the left side beam landing support 41 and the right side beam floor support 42, and the connecting strip may include a front connecting strip 43 and a rear connecting strip 44.

In the above embodiment, the front ends of the left side beam landing support 41 and the right side beam floor support 42 are respectively fixedly connected to the left front leg 31 and the right front leg 32 of the left and right front leg assemblies, respectively, and the left rear leg 21 of the backrest assembly respectively. The lower rear leg 22 is fixedly connected at the lower end, and the rear end is grounded to form a support. The side beam originally used for connecting the front and rear legs is reinforced and extended obliquely downward to replace the traditional rear leg ground support function. The pivot point can be moved back when the chair is tilted backwards. Thus, in extreme cases, such as if the chair is to be tipped over, a large rearward thrust or pulling force must be applied to the backrest of the chair or to the person on the chair, which is less common. Thus, the present invention can effectively reduce the possibility of the chair tilting backwards, even if it is placed on a slope with a lower slope, for example, on a slope of no more than 15 degrees, the chair is also not easy to tip backward.

 In addition, in the above embodiment, the four-part SKD packaging method is also used to decompose the entire chair into a seat plate assembly, a backrest assembly, left and right front leg assemblies, and left and right side beam floor support assemblies, which can effectively save packaging materials and packaging. Space and logistics costs. Moreover, the structure of the utility model is suitable for a child chair, an adult chair; a single chair, a double chair, etc., which will not be described in detail herein. The above is only a specific embodiment of the present invention, and it should be noted that those skilled in the art can make some improvements and refinements without departing from the principle of the present invention. Retouching should also be considered as the scope of protection of the present invention.

Claims

1. A constant stability safety chair comprising a seat plate assembly (1), a backrest assembly (2) and left and right front leg assemblies (3), characterized in that it further comprises left and right side beam floor support assemblies (4) The left and right side beam floor support assembly (4) includes a left side beam floor support (41) and a right side beam floor support (42), the front ends of the left side beam landing support (41) and the right side beam floor support (42) are fixedly connected to the left front leg (31) and the right front leg (32) of the left and right front leg assemblies (3), respectively. The middle is fixedly connected to the lower left leg (21) and the lower rear leg (22) of the backrest assembly (2) respectively, and the rear end is grounded to form a support. 2. The constant stability safety chair according to claim 1, wherein the left side beam floor support (41) and the right side beam floor support (42) have a smooth contact surface at the rear end ground portion. A constant-stable safety chair according to claim 1, wherein a connecting strip is fixed between the left-side beam floor support (41) and the right-side beam floor support (42). 4. A constant safety chair according to claim 3, wherein said connecting strip comprises a front connecting strip (43) and a rear connecting strip (44).