Telescoping tube for a corral stroller

Abstract

The present application relates to the technical field of telescopic pipe, in particular to a telescopic pipe for fence type stroller, which comprises a pipe body and a center rod, the pipe body is provided with a square pipe section, the center rod is arranged in the pipe body, the center rod is tightly combined with the inner wall of the pipe body, the side of the center rod is symmetrically provided with a protruding block, the pipe body is provided with a limiting hole, the limiting hole is arranged along the length direction of the pipe body, the limiting hole is matched with the protruding block, through the above technical scheme, the mechanical strength of the telescopic pipe itself is effectively ensured through the pipe body and the center rod, the center rod is placed in the pipe body through the cooperation of the protruding block on the center rod and the limiting hole, the protruding block is placed in the gap between the pipe body and the center rod, the center rod is moved along the length direction of the pipe body, the protruding block is aligned with the limiting hole, the center rod is rotated to make the protruding block extend out of the pipe body, so that the fixation is formed, the telescopic pipe steps are effectively reduced, and the mechanical strength of the telescopic pipe is improved from the structure.

Description

Technical Field

[0001] This invention relates to the field of telescopic tube technology, and more specifically to a telescopic tube for a fence-type trolley. Background Technology

[0002] Telescopic pipes are pipes that can extend and retract within a specific range. They are flexible, easy to install, and space-saving, and are widely used in various fields such as industry, home, and medical. However, existing telescopic poles are cumbersome to install and use when used on fence-type trolleys to adjust the height of the side fences. The height adjustment process requires a long time to ensure safety, especially when the height of the side fences needs to be changed frequently, which leads to low transportation efficiency. Therefore, a more convenient telescopic pipe is needed. Summary of the Invention

[0003] To achieve the above objectives, this utility model provides the following technical solution: a telescopic tube for a fence-type trolley, comprising a tube body and a central rod, wherein the tube body has a square cross-section, the central rod is disposed inside the tube body, the central rod is tightly fitted to the inner wall of the tube body, protruding blocks are symmetrically arranged on the side of the central rod, and several pairs of limiting holes are provided on the four sides of the tube body, the several sets of limiting holes are indirectly arranged along the length direction of the tube body, and the limiting holes are adapted to the protruding blocks.

[0004] Preferably, an extension plate is provided at the top of the central rod.

[0005] Preferably, the outer side of the protrusion is arc-shaped.

[0006] Preferably, the limiting hole is configured as an "L" shape, wherein one end of the limiting hole extends to the edge of the tube body, and the other end extends downward at the center of the tube body as it moves along the adjacent edge.

[0007] Preferably, a buffer pad is provided on the vertical side of the limiting hole.

[0008] The above technical solution effectively ensures the mechanical strength of the telescopic rod by using the tube body and the central rod. By cooperating with the protruding block on the central rod and the limiting hole, the central rod is placed in the tube body, and the protruding block is placed in the gap between the tube body and the central rod. The central rod is moved along the length of the tube body, and the protruding block is aligned with the limiting hole. The central rod is rotated so that the protruding block extends out of the tube body through the limiting hole, thereby forming a fixed position. This effectively reduces the adjustment time and steps of the telescopic tube, and also significantly improves the mechanical strength of the telescopic tube from a structural perspective. Attached Figure Description

[0009] Figure 1This is a schematic diagram of the structure of a telescopic tube for a fence-type trolley provided by this utility model;

[0010] Figure 2 This is a schematic diagram of the structure of the telescopic tube in this utility model, showing the protruding block in other positions;

[0011] Figure 3 This is a bottom view of the protruding block located in the tube body in this utility model;

[0012] Figure 4 This is a schematic diagram of the structure of the limiting hole in this utility model.

[0013] Explanation of reference numerals in the attached figures

[0014] 1. Tube body; 2. Center rod; 3. Protruding block; 4. Limiting hole; 5. Extension plate; 6. Buffer pad. Detailed Implementation

[0015] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0016] As mentioned above, this utility model proposes a telescopic tube for a fence-type trolley, including a tube body 1 and a central rod 2. The tube body 1 has a square cross-section. The central rod 2 is disposed inside the tube body 1 and is tightly fitted to the inner wall of the tube body 1. Symmetrical protrusions 3 are arranged on the sides of the central rod 2. Several pairs of limiting holes 4 are provided on the four sides of the tube body 1. These limiting holes 4 are indirectly arranged along the length of the tube body 1, and the limiting holes 4 are adapted to the protrusions 3. Through the above-mentioned technology… The technical solution effectively ensures the mechanical strength of the telescopic rod itself through the tube body 1 and the central rod 2. By cooperating with the limiting hole on the central rod 2, the central rod 2 is placed in the tube body 1, and the protruding block 3 is placed in the gap between the tube body 1 and the central rod 2. The central rod 2 is moved along the length of the tube body 1, and the protruding block 3 is aligned with the limiting hole. The central rod 2 is rotated so that the protruding block 3 extends out of the tube body 1 through the limiting hole, thereby forming a fixed position. This effectively reduces the adjustment time and steps of the telescopic tube, and also significantly improves the mechanical strength of the telescopic tube from a structural perspective.

[0017] According to the technical solution provided by this utility model, an extension plate 5 is provided at the top of the center rod 2. The extension plate 5 is provided at the top of the center rod 2 to facilitate the stretching of the center rod 2. On the other hand, the extension plate 5 can be used as a connector to connect the center rod 2 to the fence of the fence-type trolley.

[0018] In this utility model, the outer side of the protruding block 3 is set in an arc shape. This design is to reduce the damage to the tube body 1 that may be caused by the protruding block 3 hitting the wall in the tube body 1. At the same time, it can improve the smoothness of rotation during the rotation of the central rod 2 after aligning with the limiting hole 4.

[0019] It should be noted that the present invention does not limit the specific shape of the limiting hole 4. Its main purpose is to enable the protruding block 3 to rotate out of the tube body 1 and to provide a fixed position to fix the protruding block 3 horizontally and vertically by gravity, thereby effectively reducing the difficulty of fixing and reducing the time required for fixing. In a specific embodiment provided by the present invention, the limiting hole 4 is set to an "L" shape, wherein one end of the limiting hole 4 extends to the edge of the tube body 1, and the other end extends downward at the center of the tube surface moving along the adjacent edge.

[0020] In some embodiments, a buffer pad 6 is provided on the vertical side of the limiting hole 4. When the protruding block 3 moves in the limiting hole 4, it is inevitable that it will collide. During the collision, a large noise will be generated. The buffer pad 6 can effectively avoid the generation of noise. At the same time, the buffer pad 6 is only provided on the vertical side to avoid the buffer pad 6 affecting the fixing effect of the protruding block 3.

[0021] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A telescopic tube for a fence-type trolley, comprising a tube body (1) and a central rod (2), characterized in that: The pipe body (1) has a square cross-section. The central rod (2) is located inside the pipe body (1) and is tightly fitted to the inner wall of the pipe body (1). The central rod (2) has protruding blocks (3) symmetrically arranged on its side. Several pairs of limiting holes (4) are provided on the four sides of the pipe body (1). Several sets of limiting holes (4) are indirectly arranged along the length of the pipe body (1). The limiting holes (4) are adapted to the protruding blocks (3).

2. The telescopic tube for a fence-type trolley according to claim 1, characterized in that, An extension plate (5) is provided at the top of the central rod (2).

3. The telescopic tube for a fence-type trolley according to claim 1, characterized in that, The outer side of the protruding block (3) is set in an arc shape.

4. The telescopic tube for a fence-type trolley according to claim 1, characterized in that, The limiting hole (4) is configured as an "L" shape, wherein one end of the limiting hole (4) extends to the edge of the tube body (1), and the other end extends downward at the center of the tube surface as it moves along the adjacent edge.

5. The telescopic tube for a fence-type trolley according to claim 4, characterized in that, A buffer pad (6) is provided on the vertical side of the limiting hole (4).

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