Elastic chair back supporting rod

Abstract

The utility model belongs to the field of seats, and discloses an elastic chair back supporting rod which comprises a hollow outer sleeve. One opening of the outer sleeve is in a closed state, the other opening corresponding to the opening is connected with an inner sleeve, and the inner sleeve does linear motion along the axis of the outer sleeve under the action of external force; an elastic structure is arranged between the end face, inserted into the outer sleeve, of the inner sleeve and the closed opening of the outer sleeve. The other end of the inner sleeve is hinged to a base making contact with the ground, and the inner sleeve swings relative to the base. In the backward tilting process of the chair back, the chair back supporting rod tilts backwards along with the backward tilting process, the elastic component arranged in the outer sleeve plays a role in buffering and damping, the pause feeling in the backward tilting process is reduced, and the comfort degree is improved.

Description

Technical Field

[0001] The utility model relates to the field of seats, in particular to an elastic chair back support rod. Background Art

[0002] Chairs are essential items for office or daily life. In the office, during lunch break or when feeling tired, the back of the chair is lowered and the user rests in a semi-lying position. The back of existing chair backs is rigidly supported, which is not very comfortable. Utility Model Content

[0003] In order to solve the above technical problems, a chair back support rod with elasticity is provided.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: an elastic chair back support rod, including a hollow outer sleeve, one of the openings of the outer sleeve is in a closed state, and the other opening corresponding to the opening is connected to an inner sleeve. Under the action of external force, the inner sleeve moves linearly along the axis of the outer sleeve; an elastic structure is arranged between the end face of the inner sleeve inserted into the inner part of the outer sleeve and the closed opening of the outer sleeve; the other end of the inner sleeve is hinged with a base in contact with the ground, and the inner sleeve makes a swinging motion relative to the base.

[0005] According to the utility model, further, one of the openings of the outer sleeve is fixedly connected to a first outer sleeve nut, so that the opening is in a closed state.

[0006] According to the utility model, further, the starting point and the end point of the elastic structure are respectively fixedly connected with a first spring limiting component and a second spring limiting component; one end of the first spring limiting component contacts the inner sleeve, and the surface area of ​​the end is larger than the diameter of the inner sleeve; the second spring limiting component contacts the nut of the first outer sleeve.

[0007] According to the utility model, further, a second outer sleeve cap is provided at the connecting end of the outer sleeve and the inner sleeve; the two axial end surfaces of the second outer sleeve cap have two openings of different diameters, the two openings are connected inside thereof, the size of one opening corresponds to the outer diameter of the outer sleeve; the size of the other opening corresponds to the outer diameter of the inner sleeve.

[0008] According to the utility model, further, the inner sleeve includes a connecting section one end of which is plugged into the outer sleeve and a hinged section integrally connected to the connecting section, and the other end of the hinged section is hinged to the base; the connecting section and the hinged section form an obtuse angle at the junction; in the installed state, the obtuse angle faces the side of the seat surface.

[0009] Compared with the prior art, the beneficial effect of the utility model is that the chair back support rods are used in pairs and are arranged on the rear side of the chair back. During the process of the chair back tilting back, the chair back support rods tilt backwards, and the springs arranged inside the outer sleeve play a buffering and shock-absorbing effect, thereby reducing the sense of frustration during the tilting process and improving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of an elastic chair back support rod of the utility model;

[0011] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0012] Among them, 100-inner sleeve, 110-connecting section, 120-hinge section, 200-outer sleeve, 300-first outer sleeve cap, 400-second outer sleeve cap, 500-spring, 510-first spring limiting component, 520-second spring limiting component. DETAILED DESCRIPTION

[0013] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0014] like Figure 1 and Figure 2 As shown, an elastic chair back support rod is used in pairs and arranged at the rear of the chair back for a seat with a reclining chair back, where the rear refers to the side of the chair back reclining toward the ground. It comprises an inner sleeve 100, an outer sleeve 200 is sleeved on the outer periphery of the upper part of the inner sleeve 100, and the outer sleeve 200 extends vertically upward, and a first outer sleeve cap 300 is fixedly connected to the top of the inner sleeve 100. Preferably, the first outer sleeve cap 300 has a threaded blind hole for connecting and fixing with the outer sleeve 200; the connecting end of the outer sleeve 200 and the inner sleeve 100 is provided with a second outer sleeve cap 400, and the two axial end surfaces of the second outer sleeve cap 400 have two openings of different diameters, and the two openings are connected inside thereof, and the size of one opening corresponds to the outer diameter of the outer sleeve 200, and the size of the other opening corresponds to the outer diameter of the inner sleeve 100; the inner sleeve 100 can move along its axis in the lumen of the outer sleeve 200 under the action of external force; optimally, the second outer sleeve cap 400 is threadedly connected to both the outer sleeve 200 and the inner sleeve 100 to facilitate installation and disassembly.

[0015] Specifically, a connector for connecting to the chair back support is fixedly connected to the top of the first outer sleeve cap 300, and the two can be an integral structure or fixedly connected by a fixing member. During the use of the chair back support rod, the bottom of the inner sleeve 100 is hinged with a base (not shown) for supporting the chair back support rod, and the inner sleeve 100 can swing left and right along the hinge axis, where the left and right are consistent with the tilting direction of the chair back. When the chair back tilts backward, the inner sleeve 100 swings right, and when the chair back tilts forward, the inner sleeve 100 swings left.

[0016] In order to improve the comfort of the backrest during the reclining process, a spring 500 is arranged inside the outer sleeve 200, and the two ends of the spring 500 are respectively fixedly connected with a first spring stopper 510 and a second spring stopper 520, the bottom surface of the first spring stopper 510 contacts the inner sleeve 100 inserted into the outer sleeve 200, and the second spring stopper 520 is located at the top of the spring 500, and the top surface of the second spring stopper 520 contacts the first sleeve outer cap 300. Among them, the first spring stopper 510 and the second spring stopper 520 can be fixedly connected to the spring 500 by a positioning column, and the diameter of the positioning column is larger than the inner diameter of the corresponding first sleeve outer cap 300 or the inner diameter of the second sleeve outer cap 400, so as to prevent the spring 500 from falling into the tube cavity of the inner sleeve 100. During the reclining process of the backrest, the spring 500 plays a buffering and shock absorbing effect, reduces the frustration of the reclining process, and improves the comfort.

[0017] In this embodiment, the inner sleeve 100 includes a connecting section 110, one end of which is plugged into the outer sleeve 200, and a hinge section 120 integrally connected to the connecting section 110, and the other end of the hinge section 120 is hinged to the base, wherein the connecting section 110 and the hinge section 120 are connected at an obtuse angle. Preferably, the obtuse angle is 165°-150°. In the installed state, the obtuse angle faces the side of the seat surface. When the backrest of the chair is tilted back, the obtuse angle plays a transition role, transitioning the pressure on the inner sleeve 100, reducing the pressure on the hinge section 120, and improving the overall service life.

[0018] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An elastic chair back support rod, characterized in that: It includes a hollow outer sleeve, one of the openings of the outer sleeve is in a closed state, and the other opening corresponding to the opening is connected to the inner sleeve. Under the action of external force, the inner sleeve moves linearly along the axis of the outer sleeve; an elastic structure is arranged between the end face of the inner sleeve inserted into the outer sleeve and the closed opening of the outer sleeve; the other end of the inner sleeve is hinged with a base in contact with the ground, and the inner sleeve makes a swinging motion relative to the base.

2. The elastic chair back support rod according to claim 1, characterized in that: One of the openings of the outer sleeve is fixedly connected to a first outer sleeve nut, so that the opening is in a closed state.

3. The elastic chair back support rod according to claim 2, characterized in that: The starting point and the end point of the elastic structure are respectively fixedly connected with the first spring limiting component and the second spring limiting component; one end of the first spring limiting component contacts the inner sleeve, and the surface area of ​​the end is larger than the diameter of the inner sleeve; the second spring limiting component contacts the first outer sleeve nut.

4. The elastic chair back support rod according to claim 1, characterized in that: A second outer sleeve cap is provided at the connecting end of the outer sleeve and the inner sleeve; the axial end surfaces of the second outer sleeve cap have two openings of different diameters, the two openings are connected inside, the size of one opening corresponds to the outer diameter of the outer sleeve; the size of the other opening corresponds to the outer diameter of the inner sleeve.

5. The elastic chair back support rod according to claim 1, characterized in that: The inner sleeve includes a connecting section with one end of which is plugged into the outer sleeve and a hinged section integrally connected to the connecting section, and the other end of the hinged section is hinged to the base; the connecting section and the hinged section form an obtuse angle at the junction; in the installed state, the obtuse angle faces the side of the seat surface.

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