Telescopic rod

Abstract

The utility model discloses a telescopic rod, and relates to the technical field of telescopic rods, the telescopic rod comprises a telescopic main body composed of a plurality of sleeve rods, the diameters of the sleeve rods are sequentially decreased, the plurality of sleeve rods are sequentially distributed along the vertical direction and are mutually sleeved, and the top of each sleeve rod is provided with a fastening assembly. The fastening assembly is used for fixing the two sleeve rods which are adjacently connected in a sleeving mode; the fastening assembly comprises a pipe joint, a clamping circular groove, a contraction opening, a polygonal mounting groove, an inserting hole, a fixing nut, a swing bolt, a cam shifting piece and a pin. By arranging the fastening assembly, the pipe joint can fasten and unlock the upper sleeve rod by horizontally rotating the cam shifting piece, the telescopic rod can be conveniently and telescopically adjusted, and the screwing length of the swing bolt can be changed by vertically rotating the cam shifting piece, so that the fastening force of the pipe joint to the upper sleeve rod is changed; therefore, the application range of the telescopic rod is wider.

Description

Technical Field

[0001] The utility model relates to the field of telescopic rods, in particular to a telescopic rod. Background Art

[0002] At present, telescopic rods are widely used in various products, including selfie sticks, telescopic clothes drying rods, telescopic umbrella handles, fishing rods, mops, telescopic electric fans, etc. The telescopic rods are retractable, easy to store and carry. When working, they can be extended to reach the required length to meet the use requirements. When not working, they can be folded up to save space and be easy to carry and store. The convenience and flexibility of using the telescopic rod is one of the important indicators of product quality. Based on this, in order to achieve efficient and convenient telescopic operation of the telescopic rod, a telescopic rod is provided. Summary of the invention

[0003] The utility model aims to provide a telescopic rod in order to realize the purpose of efficient and convenient telescopic operation of the telescopic rod.

[0004] To achieve the above object, the utility model provides the following technical solutions: a telescopic rod, comprising a telescopic body composed of a plurality of sleeve rods with decreasing diameters, the plurality of sleeve rods being distributed in sequence along a vertical direction and sleeved with each other, a fastening assembly being arranged on the top of the sleeve rod, the fastening assembly being used to achieve fixation between two adjacent sleeve rods;

[0005] The fastening assembly includes a pipe joint, a clamping circular groove, a shrinking opening, a polygonal mounting groove, a plug-in hole, a fixing nut, a live bolt, a cam pick and a pin;

[0006] The clamping circular groove is provided at the bottom end of the pipe joint, the pipe joint is sleeved on the outside of the top of a sleeve rod through the pipe joint, and the other sleeve rod passes through the upper end of the pipe joint;

[0007] The shrinkage opening is opened on one side of the outside of the pipe joint and communicates with the inner cavity of the pipe joint, and the shrinkage opening is used to provide space for shrinkage of the pipe joint;

[0008] The polygonal installation groove and the plug hole are symmetrically arranged on both end surfaces of the outer wall of the pipe joint, and the plug hole passes through the contraction opening and is connected with the polygonal installation groove;

[0009] The fixing nut is installed inside the polygonal installation groove, the movable bolt passes through the plug hole from one end outside the pipe joint and is threadedly connected to the fixing nut, and the cam paddle is sleeved on the outside of one end of the movable bolt and is rotatably connected to the movable bolt through a pin;

[0010] The cam paddle is rotated to drive the movable bolt and the fixing nut to be tightened or loosened, so as to adjust the clamping force of the pipe joint on the sleeve rod.

[0011] As a further solution of the utility model: a round block structure is formed at one end of the cam paddle close to the movable bolt, the round block structure of the cam paddle and the movable bolt are provided with mounting holes for inserting pins, and the mounting hole on the cam paddle is located at an eccentric position of the round block structure.

[0012] As a further solution of the utility model: the inner wall size of the polygonal installation groove matches the outer wall size of the fixing nut, and the depth of the polygonal installation groove is greater than the horizontal length of the fixing nut.

[0013] As a further solution of the utility model: the inner diameter of the plug hole is larger than the outer diameter of the screw rod of the movable bolt.

[0014] As a further solution of the utility model: the pipe joint, the clamping circular groove, the shrinkage opening, the polygonal installation groove and the plug-in hole are integrally formed by an injection molding process.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By setting up a fastening component, the pipe joint can be fastened and unlocked to the upper sleeve rod by horizontally rotating the cam paddle, thereby realizing convenient telescopic adjustment of the telescopic rod. In addition, by vertically rotating the cam paddle, the screwing length of the movable bolt can be changed, thereby changing the fastening strength of the pipe joint to the upper sleeve rod, thereby making the application range of the telescopic rod wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a disassembled schematic diagram of the fastening assembly of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the fastening assembly of the utility model.

[0020] In the figure: 1, telescopic body; 101, sleeve rod; 2, fastening assembly; 201, pipe joint; 202, snap-fit ​​circular groove; 203, shrinkage mouth; 204, polygonal installation groove; 205, plug-in hole; 206, fixing nut; 207, live bolt; 208, cam paddle; 209, pin. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 3 In an embodiment of the utility model, a telescopic rod comprises a telescopic body 1 composed of a plurality of sleeve rods 101 with decreasing diameters in sequence, the plurality of sleeve rods 101 are sequentially distributed in a vertical direction and sleeved with each other, a fastening assembly 2 is arranged at the top of the sleeve rod 101, and the fastening assembly 2 is used to achieve fixation between two adjacent sleeve rods 101;

[0023] The fastening assembly 2 includes a pipe joint 201, a clamping circular groove 202, a shrinking opening 203, a polygonal mounting groove 204, a plug hole 205, a fixing nut 206, a movable bolt 207, a cam paddle 208 and a pin 209;

[0024] The clamping circular groove 202 is provided at the bottom end of the pipe joint 201, and the pipe joint 201 is sleeved on the outer side of the top of one sleeve rod 101 through the pipe joint 201, and the other sleeve rod 101 passes through the upper end of the pipe joint 201;

[0025] The shrinkage opening 203 is opened on one side of the outside of the pipe joint 201 and communicates with the inner cavity of the pipe joint 201. The shrinkage opening 203 is used to provide space for shrinkage of the pipe joint 201.

[0026] The polygonal installation groove 204 and the plug hole 205 are symmetrically arranged on both end surfaces of the outer wall of the pipe joint 201, and the plug hole 205 passes through the shrink opening 203 and is connected to the polygonal installation groove 204;

[0027] The fixing nut 206 is installed inside the polygonal installation groove 204, the movable bolt 207 passes through the plug hole 205 from one end outside the pipe joint 201 and is threadedly connected to the fixing nut 206, and the cam paddle 208 is sleeved on the outside of one end of the movable bolt 207 and is rotatably connected to the movable bolt 207 through the pin 209;

[0028] The cam paddle 208 is rotated to drive the hinge bolt 207 and the fixing nut 206 to be tightened or loosened, so as to adjust the clamping force of the pipe joint 201 on the sleeve rod 101;

[0029] A round block structure is formed at one end of the cam paddle 208 close to the movable bolt 207. The round block structure of the cam paddle 208 and the movable bolt 207 are provided with mounting holes for inserting the pin 209, and the mounting hole on the cam paddle 208 is located at an eccentric position of the round block structure.

[0030] In this embodiment: it should be supplemented that: the upper and lower ends of the sleeve rod 101 are open, and the outer diameter of the upper sleeve rod 101 matches the inner diameter of the adjacent lower sleeve rod 101, and the bottom outer side of the bottom sleeve rod 101 is installed with an anti-slip member, which is convenient for hand-holding and anti-slip, and the anti-slip member blocks the bottom opening of the sleeve rod 101, so as to ensure the stability of the retracted state of the telescopic rod;

[0031] When assembling the telescopic rod, it is only necessary to sleeve the pipe joint 201 onto the outer side of the top of the sleeve rod 101 through the clamping circular groove 202 and fix it by gluing, then install the fixing nut 206 inside the polygonal installation groove 204, then take out the movable bolt 207 and the cam paddle 208 as a whole, insert the movable bolt 207 into the plug hole 205 and make it threadedly connected with the fixing nut 206;

[0032] After the above-mentioned operation is performed to install the plurality of fastening components 2 and the plurality of sleeve rods 101, the plurality of sleeve rods 101 can be sleeved in sequence, and the bottom of the upper sleeve rod 101 passes through the pipe joint 201;

[0033] Then, the cam paddle 208 is rotated in the vertical direction, so that the movable bolt 207 is rotated and the fixing nut 206 is tightened, so that the portion of the pipe joint 201 located at the shrinkage opening 203 is shrunk, and the inner diameter of this portion of the pipe joint 201 becomes smaller, so as to adapt to the change in the outer diameter of the sleeve rod 101;

[0034] Then, the cam paddle 208 is rotated horizontally, so that the cam paddle 208 rotates around the pin 209, and finally the arc portion of the cam paddle 208 is fitted to the end face of the pipe joint 201, and the round block portion of the cam paddle 208 is a cam structure due to the structural setting of its eccentric mounting hole. When the cam paddle 208 is rotated horizontally, this portion squeezes the pipe joint 201, so that the portion of the pipe joint 201 located at the contraction opening 203 is further contracted and closely fitted to the outer side of the upper sleeve rod 101, thereby achieving the tightening of the upper sleeve rod 101, and the cam paddle 208 is rotated in the opposite direction to release the compression of the pipe joint 201 on the upper sleeve rod 101, and at this time, the upper sleeve rod 101 can be pulled and retracted, thereby achieving the retracting operation of the telescopic rod;

[0035] In addition, by coordinating the tightening and loosening of the movable bolt 207 and the fixing nut 206, the pressing force of the pipe joint 201 on the upper sleeve rod 101 can be adjusted, so that the scope of use is wider.

[0036] Please refer to Figures 1 to 3 , the inner wall size of the polygonal mounting groove 204 matches the outer wall size of the fixing nut 206, and the depth of the polygonal mounting groove 204 is greater than the horizontal length of the fixing nut 206;

[0037] The inner diameter of the insertion hole 205 is larger than the outer diameter of the screw rod of the movable bolt 207 .

[0038] In this embodiment: the polygonal installation groove 204 can provide an installation space for the fixing nut 206 and limit the rotation of the fixing nut 206, so that the screwing or loosening of the movable bolt 207 and the fixing nut 206 can be better achieved.

[0039] Please refer to Figures 1 to 3 The pipe joint 201, the clamping circular groove 202, the shrinkage opening 203, the polygonal installation groove 204, and the plug hole 205 are integrally formed by an injection molding process.

[0040] In this embodiment: the standardized and efficient production of the pipe joint 201 can be achieved through the injection molding process, and then it only needs to be assembled with the sleeve rod 101, the fixing nut 206, and the movable bolt 207. The overall production is simple and easy to promote and produce.

[0041] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A telescopic rod, comprising a telescopic body (1) composed of a plurality of sleeve rods (101) with successively decreasing diameters, wherein the plurality of sleeve rods (101) are sequentially distributed in a vertical direction and are mutually sleeved, and characterized in that: A fastening assembly (2) is provided at the top of the sleeve rod (101), and the fastening assembly (2) is used to achieve fixation between two adjacent sleeve rods (101); The fastening assembly (2) comprises a pipe joint (201), a snap-fit ​​circular groove (202), a shrinking opening (203), a polygonal mounting groove (204), a plug-in hole (205), a fixing nut (206), a hinge bolt (207), a cam paddle (208), and a pin (209); The clamping circular groove (202) is formed at the bottom end of the pipe joint (201), the pipe joint (201) is sleeved on the outer side of the top of a sleeve rod (101) through the pipe joint (201), and the other sleeve rod (101) passes through the upper end of the pipe joint (201); The shrinkage opening (203) is opened on one side of the outside of the pipe joint (201) and communicates with the inner cavity of the pipe joint (201), and the shrinkage opening (203) is used to provide space for shrinkage of the pipe joint (201); The polygonal installation groove (204) and the plug hole (205) are symmetrically arranged on both end surfaces of the outer wall of the pipe joint (201), and the plug hole (205) passes through the contraction opening (203) and is in communication with the polygonal installation groove (204); The fixing nut (206) is installed on the inner side of the polygonal installation groove (204); the movable bolt (207) passes through the plug hole (205) from one end outside the pipe joint (201) and is threadedly connected to the fixing nut (206); the cam paddle (208) is sleeved on the outer side of one end of the movable bolt (207) and is rotatably connected to the movable bolt (207) via a pin (209); The cam paddle (208) is rotated to drive the movable bolt (207) and the fixing nut (206) to be tightened or loosened, so as to adjust the clamping force of the pipe joint (201) on the sleeve rod (101).

2. A telescopic rod according to claim 1, characterized in that: A round block structure is formed at one end of the cam paddle (208) close to the movable bolt (207); the round block structure of the cam paddle (208) and the movable bolt (207) are provided with a mounting hole for inserting a pin (209); and the mounting hole on the cam paddle (208) is located at an eccentric position of the round block structure.

3. A telescopic rod according to claim 1, characterized in that: The inner wall size of the polygonal mounting groove (204) matches the outer wall size of the fixing nut (206), and the depth of the polygonal mounting groove (204) is greater than the horizontal length of the fixing nut (206).

4. The telescopic rod according to claim 1, characterized in that: The inner diameter of the insertion hole (205) is larger than the outer diameter of the screw rod of the hinge bolt (207).

5. The telescopic rod according to claim 1, characterized in that: The pipe joint (201), the circular clamping groove (202), the shrinking opening (203), the polygonal installation groove (204), and the plug hole (205) are integrally formed by an injection molding process.

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