Telescopic rod structure

Abstract

The utility model discloses a universal telescopic rod structure which comprises a telescopic outer pipe and a telescopic inner pipe, the telescopic inner pipe is arranged in the telescopic outer pipe in a sliding mode, a step protruding towards the interior of the telescopic outer pipe is arranged at the top of the telescopic outer pipe, the telescopic inner pipe penetrates through the step to slide, an annular groove is formed in the telescopic inner pipe, and the telescopic inner pipe is connected with the annular groove. A semicircular clamping ring is arranged on the annular groove; according to the technical scheme, an existing telescopic rod piece is improved, when the inner pipe and the outer pipe are matched, the steps are used for replacing an existing flange matching structure telescopic rod, and due to the fact that the steps and the telescopic outer pipe are of an integrated structure and can be integrally formed in the manufacturing process, the structure is stable, cost is lower compared with the mode that flanges are additionally arranged, and use is convenient. The telescopic inner pipe can be well limited, and installation is convenient.

Description

Technical Field

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

[0002] In current technology, tool handles need to have a telescopic structure to assist operators in using the tool. By extending the handle, the tool can be made to exert a larger force with a smaller force to meet the working requirement. However, the existing telescopic structures of handles limit the elongation of the internal tube through the flange to prevent it from falling off. However, when the internal tube is limited by the flange structure, the flange needs to be specially designed, and the flange needs to be installed on the external tube, which requires higher precision. Therefore, the probability of quality problems in the manufactured telescopic tube will increase, and the cost will also be very high. Utility Model Content

[0003] Technical problems to be solved by utility models

[0004] The technical problem to be solved by the utility model is to provide a telescopic rod structure, which solves the problem that the existing telescopic rods all limit the internal tube through the flange structure.

[0005] Technical Solution

[0006] In order to solve the above problems, the technical solution provided by the utility model is:

[0007] A telescopic rod structure comprises a telescopic outer tube and a telescopic inner tube. The telescopic inner tube is slidably arranged inside the telescopic outer tube. A step protruding toward the inside of the telescopic outer tube is arranged on the top of the telescopic outer tube. The telescopic inner tube slides through the step.

[0008] Furthermore, an annular groove is provided on the telescopic inner tube, and a semicircular clamping ring is provided on the annular groove.

[0009] Furthermore, the two semicircular clamping rings are mounted on the annular groove in a head-to-tail abutment manner, and the two semicircular clamping rings form a raised ring higher than the telescopic inner tube.

[0010] Furthermore, a connecting and fixing rod is provided at the bottom of the telescopic inner tube, the connecting and fixing rod is inserted into the telescopic inner tube, and a fixing pin is provided transversely through the connecting and fixing rod and the telescopic inner tube.

[0011] Furthermore, a locking eccentric shaft is fixedly provided at the bottom of the connecting and fixing rod, and a rotation limiting block is provided on the locking eccentric shaft.

[0012] Furthermore, limiting cylinders are provided at both upper and lower ends of the locking eccentric shaft.

[0013] Furthermore, a locking rotating sleeve is sleeved on the locking eccentric shaft.

[0014] Furthermore, one side of the locking rotating sleeve is a locking rotating sleeve limiting groove, and the other side is a locking rotating sleeve convex surface.

[0015] Furthermore, the locking rotating sleeve is provided with an eccentric hole of the locking sleeve.

[0016] Furthermore, the telescopic outer tube sleeve is provided with an outer tube handle sleeve.

[0017] Beneficial Effects

[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0019] The technical solution provided by the utility model improves the existing telescopic rod. When the inner and outer tubes are matched, a step is used to replace the existing flange matching structure telescopic rod. Since the step and the telescopic outer tube are an integrated structure, they can be integrally formed during production. Not only is the structure stable, but the cost is also lower than that of adding multiple flanges. It can not only form a good limit for the telescopic inner tube, but also is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the telescopic outer tube of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the telescopic inner tube of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the locking eccentric shaft of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the locking rotating sleeve of the utility model. DETAILED DESCRIPTION

[0025] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0026] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0027] Example

[0028] Combined with Figure 1-5 A telescopic rod structure includes a telescopic outer tube 10 and a telescopic inner tube 20, wherein the telescopic outer tube 10 is the initial length of the telescopic rod, and the telescopic inner tube 20 is the extended length of the telescopic rod.

[0029] The telescopic inner tube 20 is slidably disposed in the telescopic outer tube 10 . In an initial state, the telescopic inner tube 10 slightly extends out of the telescopic outer tube 20 to facilitate the user to pull the telescopic inner tube 20 .

[0030] The top of the telescopic outer tube 10 is provided with a step 11 protruding toward the inside of the telescopic outer tube 10, and the telescopic inner tube 20 slides through the step 11. The telescopic inner tube 20 is provided with an annular groove 28, and the annular groove 28 is provided with a semicircular snap ring 21. The two semicircular snap rings 21 are mounted on the annular groove 28 in a head-to-tail abutment fit, and the two semicircular snap rings 21 form a raised ring higher than the telescopic inner tube 20.

[0031] When the two semicircular clamping rings 21 are installed on the annular grooves 28 on the telescopic inner tube 20, and the telescopic inner tube 20 is installed in the telescopic outer tube 10, the step 11 of the telescopic outer tube 10 will block and limit the raised ring formed by the semicircular clamping rings 21, so that the telescopic inner tube 20 cannot be completely separated from the telescopic outer tube 10.

[0032] A connecting and fixing rod 30 is provided at the bottom of the telescopic inner tube 20 . The connecting and fixing rod 30 is inserted into the telescopic inner tube 20 . A fixing pin 31 is provided transversely through the connecting and fixing rod 30 and the telescopic inner tube 20 .

[0033] A locking eccentric shaft 32 is fixedly provided at the bottom of the connecting fixing rod 30 , and a rotation limit block 34 is provided on the locking eccentric shaft 32 . The eccentric structure of the locking eccentric shaft 32 forms cavities of different widths between the locking eccentric shaft 32 and the telescopic outer tube 10 .

[0034] The locking eccentric shaft 32 is provided with a limiting cylinder 33 at both the upper and lower ends. The limiting cylinder 33 has the same diameter as the telescopic inner tube 20 and is coaxial with the telescopic inner tube 20. A locking rotating sleeve 35 is sleeved on the locking eccentric shaft 32. The limiting cylinder 33 limits the movement of the locking rotating sleeve 35 so that it can only rotate.

[0035] One side of the locking rotating sleeve 35 is a locking rotating sleeve limiting groove 41, and the other side is a locking rotating sleeve convex surface 42. The rotation limiting block 34 slides relatively on the locking rotating sleeve limiting groove 41. The locking rotating sleeve 35 is provided with a locking sleeve eccentric hole 43. Therefore, due to the existence of the locking sleeve eccentric hole 43, the thickness of one side of the locking rotating sleeve 35 is thicker and the thickness of the other side is thinner. The locking eccentric shaft 32 passes through the locking sleeve eccentric hole 43 so that the locking rotating sleeve 35 is sleeved on the locking eccentric shaft 32. The cavity formed between the locking rotating sleeve limiting groove 41 of the locking rotating sleeve 35 and the limiting cylinder 33 is for the rotation limiting block 34 to slide.

[0036] The connecting and fixing rod 30 is used to connect the locking eccentric shaft 32 and the locking rotating sleeve 35 and other related components to the bottom of the telescopic inner tube 20 . The connecting and fixing rod 30 is connected to the inner tube 20 through a fixing pin 321 .

[0037] Therefore, due to the eccentric design of the locking eccentric shaft 32 and the structural design of the different thicknesses of the locking rotating sleeve 35, when the thicker position of the locking eccentric shaft 32 rotates in the wider space formed by the locking eccentric shaft 32 and the telescopic outer tube 10, the telescopic inner tube 20 can move freely in the telescopic outer tube 10, and when the thinner position of the locking eccentric shaft 32 rotates in the narrower space formed by the locking eccentric shaft 32 and the telescopic outer tube 10, the locking rotating sleeve 35 and the telescopic outer tube 10 will be stuck, so that the telescopic inner tube 20 and the telescopic outer tube 10 are relatively fixed.

[0038] After the telescopic inner tube 20 is extended to a suitable position, the telescopic outer tube 10 and the telescopic inner tube 20 are relatively rotated to fix the telescopic outer tube 10 and the telescopic inner tube 20, thereby fixing the length of the telescopic inner tube 20 and fixing the telescopic amount. At this time, the telescopic rod can be used, and the telescopic outer tube 10 and the telescopic inner tube 20 can be fixed when the telescopic inner tube 20 is extended to any length.

[0039] The telescopic outer tube 10 is provided with an outer tube handle sleeve 60 for easy use.

[0040] When the above technical solution is actually used, the inner end of the telescopic inner tube 20 can be provided with a thread for connecting to an external device. In other schemes, the telescopic inner tube 20 can be directly provided with an external device as an integrated structure, or the external device can be directly converted into the telescopic inner tube 20 for use, which can be suitable for different devices.

[0041] It is preferably used as a handle connected to more tool-like external devices.

[0042] The locking rotating sleeve 35 is provided with an opening and a groove, which provide elastic force for the locking rotating sleeve 35 and facilitate the installation of the locking rotating sleeve 35 on the locking eccentric shaft 32 .

[0043] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A telescopic rod structure, characterized in that: It comprises a telescopic outer tube and a telescopic inner tube, wherein the telescopic inner tube is slidably arranged inside the telescopic outer tube, and a step is provided on the top of the telescopic outer tube protruding toward the inside of the telescopic outer tube, and the telescopic inner tube slides through the step; The telescopic inner tube is provided with an annular groove, and the annular groove is provided with a semicircular clamping ring; The two semicircular snap rings are mounted on the annular groove in a head-to-tail abutment manner, and the two semicircular snap rings form a raised ring higher than the telescopic inner tube.

2. A telescopic rod structure according to claim 1, characterized in that: A connecting and fixing rod is provided at the bottom of the telescopic inner tube, and the connecting and fixing rod is inserted into the telescopic inner tube. A fixing pin is provided transversely through the connecting and fixing rod and the telescopic inner tube.

3. A telescopic rod structure according to claim 2, characterized in that: A locking eccentric shaft is fixedly provided at the bottom of the connecting and fixing rod, and a rotation limiting block is provided on the locking eccentric shaft.

4. A telescopic rod structure according to claim 3, characterized in that: The locking eccentric shaft is provided with limiting cylinders at both upper and lower ends.

5. The telescopic rod structure according to claim 3, characterized in that: A locking rotating sleeve is sleeved on the locking eccentric shaft.

6. The telescopic rod structure according to claim 5, characterized in that: One side of the locking rotating sleeve is a locking rotating sleeve limiting groove, and the other side is a locking rotating sleeve convex surface.

7. The telescopic rod structure according to claim 6, characterized in that: The locking rotating sleeve is provided with a locking sleeve eccentric hole.

8. The telescopic rod structure according to claim 1, characterized in that: The telescopic outer tube sleeve is provided with an outer tube handle sleeve.

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