Telescopic rod with more stable connection

Abstract

The utility model belongs to the technical field of telescopic devices, and particularly relates to a more stable-connection telescopic rod which comprises a first rod body and a second rod body which is arranged in the first rod body and connected with the first rod body in a sliding mode, an annular groove is formed in the inner wall of the first rod body, and a step portion is formed between the annular groove and the inner wall of the first rod body. The outer wall of the second rod body is provided with at least two symmetrical butt joint grooves corresponding to the annular grooves, fixing blocks and first springs are arranged in the butt joint grooves, one ends of the first springs are fixedly connected with the inner walls of the butt joint grooves, the other ends of the first springs are fixedly connected with the end faces of the fixing blocks, the fixing blocks are clamped with the annular grooves, and guide grooves corresponding to the fixing blocks are formed in the annular grooves. A fixing groove communicating with the annular groove is formed in the outer wall of the first rod body, and a limiting clamp is arranged in the fixing groove. Compared with the prior art, the telescopic rod is more stable to stretch out and draw back, the spring and the first rod body are made of the same material, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic devices, and more particularly to a telescopic rod with a more stable connection. Background Art

[0002] A telescopic rod is a structure with telescopic functionality, commonly found in various telescopic devices and tools. Its structural principle generally consists of multiple interlocking circular or square cylinders, each of which houses a number of small circular or square shafts. These small shafts are connected to the outer shaft or large square shaft of the telescopic rod through a mechanical transmission mechanism such as gears, racks, or threads, forming the telescopic structure of the rod.

[0003] For example, the telescopic rod disclosed in authorization publication number CN 218118245 U has a first anti-slip member disposed at the bottom end of a first telescopic tube. The first anti-slip member and the inner wall of the second telescopic tube create friction, preventing the first telescopic tube from retracting under its own weight when extending from the second telescopic tube, thereby improving the user experience. Furthermore, the first anti-slip member can be made of plastic or rubber, which increases friction with the second telescopic tube while reducing production costs.

[0004] In the above, since rubber has a poorer antioxidant capacity than metal, the service life of rubber is far less than that of metal tubes. During long-term use, the elasticity and durability of rubber will decrease, thereby affecting the friction between the two telescopic rods and further affecting the stability of the telescopic rods. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a telescopic rod that can be firmly fixed and has a more stable connection when the telescopic rod is extended.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A telescopic rod with a more stable connection comprises a rod body 1 and a rod body 2 placed in the rod body 1 and slidably connected to the rod body 1, wherein the inner wall of the rod body 1 is provided with an annular groove, and a step portion is formed between the annular groove and the inner wall of the rod body 1.

[0008] The outer wall of the second rod body is provided with at least two symmetrically arranged docking grooves corresponding to the annular groove, and a fixing block and a spring are provided in the docking groove. One end of the spring is fixedly connected to the inner wall of the docking groove, and a guide groove is provided on the annular groove of the spring corresponding to the fixing block.

[0009] An outer wall of the rod body is provided with a fixing groove which is communicated with the annular groove, and a limiting clip is provided in the fixing groove.

[0010] The utility model is further configured as follows: the limiting clamp includes a plate body 1, a plate body 2 and a limiting rod placed between the two plates, the plate body 1 is placed on the outer wall of the rod body 1, the plate body 2 is placed in the annular groove, and the limiting rod passes through the fixing groove.

[0011] The utility model is further configured as follows: a second spring is provided between the second plate body and the inner wall of the annular groove, one end of the second spring is fixedly connected to the second plate body, and the other end of the second spring is fixedly connected to the inner wall of the annular groove.

[0012] The utility model is further configured as follows: the guide groove is inclined from the end surface of the annular groove to an inner wall of the rod body.

[0013] The utility model is further configured as follows: the diameters of the plate body 1 and the plate body 2 are larger than the diameters of the fixing grooves.

[0014] Compared with the shortcomings of the prior art, the beneficial effects of the present invention are:

[0015] By providing an annular groove in the rod body one, a fixing block that engages with the annular groove is exhibited on the rod body two. Since the fixing block is connected to a spring, when the fixing block slides into the annular groove, the fixing block will engage with the annular groove under the elastic force of the spring. Furthermore, an oblique groove is provided on the annular groove. By rotating the rod body two, the fixing block engages with the oblique groove, and the rod body two can be retracted. Furthermore, limit clips are provided on both sides of the oblique groove to prevent the rod body two from being retracted during use. During the use of the telescopic rod, the extension and retraction are more stable, and the material of the spring is consistent with that of the rod body one, and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 A top view of an embodiment of the present utility model;

[0018] Figure 3 It is a partially enlarged view of an embodiment of the present utility model.

[0019] Rod body 1 1, rod body 2 2, annular groove 3, docking groove 5, fixing block 5, spring 1 6, guide groove 7, fixing groove 8, plate body 1 9, plate body 2 10, limiting rod 11, spring 2 12. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] like Figures 1 to 3 As shown,

[0023] A telescopic rod with a more stable connection includes a rod body 1 and a rod body 2 placed in the rod body 1 and slidably connected to the rod body 1. The inner wall of the rod body 1 is provided with an annular groove 3, and the annular groove 3 and the inner wall of the rod body 1 form a step portion. When the rod body 2 moves to the annular groove 3, the rod body 2 will engage with the annular groove 3.

[0024] The outer wall of the rod body 2 is provided with at least two symmetrically arranged docking grooves 4 corresponding to the annular groove 3, and a fixing block 5 and a spring 1 6 are provided in the docking groove 4. One end of the spring 1 6 is fixedly connected to the inner wall of the docking groove 4, and the other end of the spring 1 6 is fixedly connected to the end face of the fixing block 5. The fixing block 5 is engaged with the annular groove 3. Since the spring has elastic force, when the fixing block 5 moves to the horizontal plane where the annular groove 3 is located, the elastic force of the spring 1 6 will pop out of the docking groove 4, and the popped-out fixing groove 8 will be stuck in the annular groove 3. In the absence of external force, the fixing block 5 will fix the rod body 2 2 at the horizontal height where the annular groove 3 is located.

[0025] A guide groove 7 is provided on the annular groove 3 corresponding to the fixed block 5. The guide groove 7 is inclined from the end face of the annular groove 3 to the inner wall of the rod body 1. When the fixed block 5 moves to the position where the guide groove 7 is located, the spring retracts under the pressure of the inner wall of the guide groove 7 until the fixed block 5 is re-inserted into the docking groove 4.

[0026] The outer wall of rod body 1 is provided with a fixing groove 8 that communicates with annular groove 3. A limiting clamp is located within fixing groove 8. The limiting clamp comprises plate 1 9, plate 2 10, and a limiting rod 11 positioned between the two plates. Plate 1 9 is positioned on the outer wall of rod body 1, plate 2 10 is positioned within annular groove 3, and limiting rod 11 extends through fixing groove 8. To prevent rod body 2 2 from retracting during use, the limiting clamp is required to block the path from fixing block 5 to guide groove 7.

[0027] A spring 2 12 is provided between the plate 2 10 and the inner wall of the annular groove 3. One end of the spring 2 12 is fixedly connected to the plate 2 10, and the other end of the spring 2 12 is fixedly connected to the inner wall of the annular groove 3. The diameters of the plate 1 9 and the plate 2 10 are larger than the diameter of the fixed groove 8 to prevent the plate 1 9 or the plate 2 10 from passing through the fixed groove 8.

[0028] Working principle: When the telescopic rod needs to be extended, pull the rod body 2. When the fixed block 5 moves to the horizontal plane where the annular groove 3 is located, the fixed block 5 is popped out from the docking groove 4 by the elastic force of the spring 1 6. The popped-out fixing groove 8 is stuck in the annular groove 3. In the absence of external force, the fixed block 5 will fix the rod body 2 at the horizontal height of the annular groove 3, completing the extension of the telescopic rod.

[0029] When it is necessary to retract the rod body 2, rotate the rod body 2, rotate the fixed block 5 to the vicinity of the guide groove 7, then manually pull the plate body 1 9, bring the plate body 2 10 close to the inner wall of the annular groove 3, and then move the fixed block 5 to the guide groove 7 to retract the rod body 2. At this time, release the plate body 1 9, and under the elastic force of the spring 2 12, the plate body 2 10 is reset.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A telescopic rod with a more stable connection, comprising a rod body (1) and a rod body (2) disposed inside the rod body (1) and slidably connected to the rod body (1), characterized in that: The inner wall of the rod body (1) is provided with an annular groove (3), and a step portion is formed between the annular groove (3) and the inner wall of the rod body (1). The outer wall of the second rod body (2) is provided with at least two symmetrically arranged docking grooves (4) corresponding to the annular groove (3), and a fixing block (5) and a spring (6) are provided in the docking groove (4). One end of the spring (6) is fixedly connected to the inner wall of the docking groove (4), and the other end of the spring (6) is fixedly connected to the end face of the fixing block (5). The fixing block (5) is engaged with the annular groove (3). A guide groove (7) is provided on the annular groove (3) corresponding to the fixed block (5). The outer wall of the rod body 1 (1) is provided with a fixing groove (8) which is in communication with the annular groove (3), and a limiting clamp is provided in the fixing groove (8).

2. A telescopic rod with a more stable connection according to claim 1, characterized in that: The limiting clamp comprises a plate body 1 (9), a plate body 2 (10) and a limiting rod (11) placed between the two plates, wherein the plate body 1 (9) is placed on the outer wall of the rod body 1 (1), the plate body 2 (10) is placed in the annular groove (3), and the limiting rod (11) passes through the fixing groove (8).

3. The telescopic rod with a more stable connection according to claim 2, characterized in that: A second spring (12) is provided between the second plate body (10) and the inner wall of the annular groove (3), one end of the second spring (12) is fixedly connected to the second plate body (10), and the other end of the second spring (12) is fixedly connected to the inner wall of the annular groove (3).

4. The telescopic rod with a more stable connection according to claim 3, characterized in that: The guide groove (7) is inclined from the end surface of the annular groove (3) to the inner wall of the rod body (1).

5. The telescopic rod with a more stable connection according to claim 4, characterized in that: The diameters of the plate body 1 (9) and the plate body 2 (10) are larger than the diameter of the fixed groove (8).

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