Adjustable chair frame

Abstract

The utility model provides an adjustable chair frame, which relates to the technical field of outdoor articles and comprises a pivot joint and a central tube, the pivot joint is used for mounting the central tube, and one end of the pivot joint is provided with a connecting part matched with the central tube; limiting protrusions are symmetrically arranged on the inner wall of the connecting part in the depth direction, after the center pipe is inserted into the connecting part, the outer wall of the center pipe makes contact with the limiting protrusions, angle rotation is conducted in the connecting part with the limiting protrusions as supports, and the pivot joint is made to be rotationally connected with the center pipe. According to the folding chair, the height difference caused by different ground heights can be counteracted by rotating and adjusting the angle of the pivot joint relative to the ground, so that the folding chair can be normally used on the uneven ground, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor supplies, and more specifically, to an adjustable chair frame. Background Art

[0002] Folding chairs are essential daily necessities. As a convenient and practical piece of furniture, folding chairs are also widely used outdoors. The characteristic of folding chairs is that they have a relatively small volume after folding, do not occupy much space, are convenient for transportation, and can be used normally after being opened.

[0003] For existing folding chairs, when camping outdoors on uneven ground, their stability decreases. The uneven ground can cause outdoor chairs to be unable to be placed stably, and they are prone to shaking or tilting. This not only affects the comfort of users but may also cause users to accidentally fall. Using outdoor chairs on uneven ground for a long time may cause damage to the structure of the chairs, such as deformation of the chair legs or loosening of the joints. It affects the user experience: the uneven ground affects the normal use of outdoor chairs, and users may not be able to maintain a comfortable sitting position, reducing the user experience. Summary of the Invention

[0004] The problem solved by the utility model is how to overcome the above-mentioned defects that occur when folding chairs are used on uneven ground during outdoor camping.

[0005] To solve the above problems, the utility model provides an adjustable chair frame, which includes a central joint and a central tube. The central joint is used to install the central tube, and one end of the central joint is provided with a connecting portion that cooperates with the central tube.

[0006] On the inner wall of the connecting portion, limiting protrusions are symmetrically arranged along the depth direction. After the central tube is inserted into the connecting portion, its outer wall contacts the limiting protrusions, and it rotates at an angle within the connecting portion with the limiting protrusions as a support, so that the central joint and the central tube are rotatably connected.

[0007] After adopting the above structure, a connecting portion is provided on the central joint for connecting with the central tube, and limiting protrusions are symmetrically arranged along the depth direction on the inner wall of the connecting portion. After the central tube is inserted into the connecting portion, its outer wall contacts the limiting protrusions. In this way, the central tube can rotate within a small range along the limiting protrusions in the connecting portion, solving the problem of different ground heights outdoors and keeping the chair frame stable.

[0008] Furthermore, there are multiple central joints, and both ends of the central tube are respectively inserted into the connecting portions of the multiple central joints.

[0009] After adopting the above structure, users can rotate the left and right central joints of the folding chair at different angles to meet the usage requirements of different ground heights outdoors.

[0010] Further, the connecting portion is annular in shape.

[0011] Further, the central tube is annular in shape.

[0012] After adopting the above structure, according to the specifications of the above dimensions, the size of the annular central tube is smaller than that of the annular connecting portion. After insertion, it can be rotated within a certain range in the annular connecting portion at will. Under the limiting action of the limiting protrusion, the central joint can be rotated by an external force to fix the annular central tube at a specific angle, avoiding the problem of instability caused by different ground heights, so as to ensure the stability of the chair frame.

[0013] The utility model adopting the above technical scheme has the following beneficial effects:

[0014] By providing a connecting portion for inserting the central tube on the central joint of the chair frame and arranging a limiting protrusion in the connecting portion, the utility model enables the central tube to rotate within a small range under the action of the limiting protrusion while maintaining stability after being inserted into the connecting portion. When the outdoor camping ground is uneven, the user can adjust the angles of multiple chair legs in contact with the ground on the chair frame through this small-range rotation, so as to offset the height difference caused by different ground heights, so that the folding chair can be used normally on uneven ground and the user experience is improved. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of an adjustable chair frame provided by an embodiment of the utility model;

[0016] Figure 2 is Figure 1 a partial enlarged schematic view of part A in

[0017] Figure 3 is Figure 1 a partial enlarged schematic view of part B in

[0018] Description of the Reference Numerals:

[0019] 1 - central joint, 2 - connecting portion, 201 - limiting protrusion, 3 - central tube. Detailed Embodiments

[0020] In order to make the above objects, features, and advantages of the utility model more obvious and understandable, the following detailed description of the specific embodiments of the utility model is given with reference to the drawings.

[0021] The following are specific embodiments of the utility model and in combination with the drawings, the technical solutions of the utility model are further described, but the utility model is not limited to these embodiments. Embodiment

[0022] This embodiment provides an adjustable chair frame, as Figures 1 to 3 shown, which includes a central joint 1 and a central tube 3. The central joint 1 is used to install the central tube 3, and one end of the central joint 1 is provided with a connecting portion 2 that cooperates with the central tube 3;

[0023] On the inner wall of the connecting portion 2, limiting protrusions 201 are symmetrically arranged along the depth direction. After the central tube 3 is inserted into the connecting portion 2, its outer wall contacts the limiting protrusions 201, and rotates at an angle within the connecting portion 2 with the limiting protrusions 201 as the support, so that the central joint 1 and the central tube 3 are rotatably connected.

[0024] Referring to Figure 2 , specifically, one end of the central joint 1 is designed with a connecting portion 2 that cooperates with the central tube 3. Limiting protrusions 201 are symmetrically arranged along the depth direction on the inner wall of this connecting portion 2. After the central tube 3 is inserted into the connecting portion 2, its outer wall will contact these limiting protrusions 201, and with these limiting protrusions 201 as the support points, it rotates at an angle within the connecting portion 2. This design makes the connection between the central joint 1 and the central tube 3 no longer a fixed connection, but an adjustable connection that can achieve relative rotation. Among them, the central tube 3 is designed to be non-circular to meet the requirement of coaxial rotation with the central joint 1 within the connecting portion 2 under the action of the limiting protrusions 201.

[0025] Among them, there are multiple central joints 1, and both ends of the central tube 3 are respectively inserted into the connecting portions 2 of multiple central joints 1.

[0026] Referring to Figure 3 , among them, the connecting portion 2 is annular, and the central tube 3 is annular.

[0027] Specifically, the angle adjustment function: Through the rotatable connection between the central joint 1 and the central tube 3, the user can adjust the angle of the chair frame according to needs to meet different usage requirements. This adjustment function increases the flexibility and adaptability of the chair frame.

[0028] Specifically, stability guarantee: The limiting protrusions 201 not only realize the rotation function, but also ensure the stability of the central tube 3 during the rotation process. The limiting protrusions 201 serve as the support points, which can prevent the central tube 3 from shifting or shaking during rotation, ensuring the overall stability of the chair frame.

[0029] Specifically, compact structure: The connection method between the central joint 1 and the central tube 3 is simple and effective, which not only realizes the angle adjustment function, but also does not increase too many complex structures and weights.

[0030] Specifically, scalability: It is further extended to a structure in which a plurality of central joints 1 are respectively connected to both ends of the central tube 3. This design can further increase the stability and load-bearing capacity of the chair frame, and at the same time also provides more possibilities for the design of the chair frame. Through the rotatable connection design between the central joint 1 and the central tube 3, an adjustable chair frame is realized, which has functions such as angle adjustment, stability guarantee, compact structure, scalability, and special shape design.

[0031] Specifically, by providing a connecting portion 2 on the central joint 1 for the central tube 3 to be inserted into, and providing a limiting protrusion 201 inside the connecting portion 2, the rotatable connection between the central tube 3 and the central joint 1 is realized. This design allows the central tube 3 to rotate within a small range inside the connecting portion 2, thereby providing the possibility of adjusting the contact angles of multiple chair legs on the chair frame with the ground.

[0032] Specifically, in scenarios where the ground is uneven such as outdoor camping, users can slightly adjust the angle of the chair frame so that the chair legs can better adapt to the height difference of the ground. Due to the rotatable connection between the central tube 3 and the central joint 1 and the limiting effect of the limiting protrusion 201, users can easily adjust the angle of the chair frame within a certain range without complex operations or carrying additional tools. This design not only improves the usability of the folding chair on uneven ground but also enhances the user experience. Users can flexibly adjust the angle of the chair frame according to the actual situation to ensure the stability and comfort of the chair, and thus enjoy the fun of outdoor camping more. It provides convenience and comfort for the use of folding chairs in scenarios such as outdoor camping.

[0033] In the utility model, by providing a connecting portion for the central tube to be inserted into on the central joint of the chair frame, and providing a limiting protrusion inside the connecting portion, after the central tube is inserted into the connecting portion, it can rotate within a small range under the action of the limiting protrusion. When the ground for outdoor camping is uneven, users can adjust the contact angles of multiple chair legs on the chair frame with the ground through this small-range rotation to offset the height difference caused by the uneven ground, so that the folding chair can be used normally on uneven ground and the user experience is improved.

[0034] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. An adjustable chair frame, comprising a central joint and a central tube, the central joint being used for installing the central tube, characterized in that, One end of the central joint is provided with a connecting portion that cooperates with the central tube; On the inner wall of the connecting portion, limiting protrusions are symmetrically arranged along the depth direction. After the central tube is inserted into the connecting portion, its outer wall contacts the limiting protrusions, and the central joint rotates within the connecting portion with the limiting protrusions as the support, so that the central joint and the central tube are rotatably connected.

2. The adjustable chair frame according to claim 1, wherein, There are multiple central joints, and both ends of the central tube are respectively inserted into the connecting portions of the multiple central joints.

3. The adjustable chair frame according to claim 1, characterized in that, The connecting portion is annular.

4. The adjustable chair frame according to claim 3, characterized in that, The central tube is annular.

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