Detachable extension rod of electric tool

Abstract

The utility model discloses a detachable extension rod of an electric tool. The detachable extension rod comprises a first connecting pipe, an extension pipe and a second connecting pipe, the bearing part is formed at the first end of the first connecting pipe and the first end of the extension pipe, the pipe diameter of the bearing part is larger than that of the non-bearing part of the first connecting pipe and that of the non-bearing part of the extension pipe, and a bearing groove, a bearing hole and a guide protrusion are formed in the bearing part; the inserting part comprises a connecting part and an inserting sleeve, the connecting part is arranged at the second end of the extension pipe and the first end of the second connecting pipe, a fixing groove is formed in the connecting part, a first protruding block and a second protruding block are formed on the inserting sleeve, and the inserting sleeve is fixed to the connecting part through cooperation of the first protruding block and the fixing groove; an elastic button is arranged on the connecting part; the first connecting pipe, the extension pipe and the second connecting pipe are connected through cooperation of the bearing part and the inserting part.

Description

Technical Field

[0001] This application relates to the technical field of extension rods, and particularly to a detachable extension rod for power tools. Background Art

[0002] In the field of power tools, it is quite common to use extension rods to reach remote or hard-to-reach areas. However, traditional power tool extension rods usually have a fixed length, which limits their flexibility and adaptability under different working conditions. In addition, these traditional extension rods are often designed as a single unit, making it difficult to transport, store, and replace individual components when they are damaged.

[0003] To solve the above problems, detachable extension rods came into being. Detachable extension rods are composed of multiple detachable parts and can be freely adjusted in length according to the needs of the operation scenario, greatly improving the flexibility and adaptability of the tools. However, in the existing detachable extension rod designs, generally, one or more inner tubes sleeved with each other are arranged in an outer tube to expand the use range of power tools, and an elastic button is used for locking. The problem is that the shortest length depends on the length of the outer rod. Considering the number of inner rod segments and the extension requirements comprehensively, the outer rod still has a certain length, occupying a large space and being inconvenient for the transportation and storage of power tools. Moreover, relying solely on the elastic button for locking, the connection strength and stability are poor.

[0004] The above content is only used to assist in understanding the technical solution of this application, and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0005] Based on this, this application provides a detachable extension rod for power tools to solve one of the above technical problems.

[0006] The technical solution adopted by this application to solve its technical problems is as follows: A detachable extension rod for a power tool, comprising: a first connecting pipe, an extension pipe, and a second connecting pipe; a receiving portion formed at the first end of the first connecting pipe and the first end of the extension pipe, the diameter of the receiving portion being larger than the diameter of the non-receiving portion of the first connecting pipe and the extension pipe, and a receiving groove, a receiving hole, and a guiding protrusion being provided on the receiving portion; a plugging portion including a connecting portion and a plugging sleeve, the connecting portion being provided at the second end of the extension pipe and the first end of the second connecting pipe, a fixing groove being provided on the connecting portion, a first protrusion and a second protrusion being formed on the plugging sleeve, the plugging sleeve being fixed on the connecting portion by the cooperation of the first protrusion and the fixing groove, and a spring button being provided on the connecting portion; the plugging portion can be inserted into the receiving portion for fixing the two, the second protrusion cooperates with the receiving groove, and the spring button cooperates with the receiving hole, and the two cooperate with each other, so as to fix the first connecting pipe and the extension pipe detachably, the extension pipe and the second connecting pipe are detachably fixed, and the number of extension pipes can be increased or decreased according to actual needs to obtain a suitable length.

[0007] In some embodiments, on the plugging sleeve, elastic grooves are provided on both sides of the second protrusion, and opening grooves are provided on both sides of the first protrusion.

[0008] In some embodiments, one side of both the first protrusion and the second protrusion is a slope.

[0009] In some embodiments, the first protrusions are distributed in pairs in a circular shape on the outer wall of the plugging sleeve.

[0010] In some embodiments, a section of the plugging sleeve inserted into the connecting portion is thinned, and a section not inserted into the connecting portion has the same outer diameter as the connecting portion.

[0011] In some embodiments, one end of the plugging sleeve inserted into the receiving portion has a rounded corner for guiding.

[0012] In some embodiments, the spring button penetrates out from the inner wall of the connecting portion, a spring piece is installed on the spring button, and both ends of the spring piece are fixed on the inner wall of the connecting portion.

[0013] In some embodiments, the spring button has a rounded corner for guiding and can cooperate with the guiding protrusion to press the spring button into the connecting portion.

[0014] In some embodiments, a first connecting hole is provided on the first connecting pipe, an installation groove is formed at the second end of the second connecting pipe, and a second connecting hole is provided in the installation groove.

[0015] In some embodiments, a guiding groove is provided on the connecting portion for cooperating with corresponding protrusions on the plugging sleeve.

[0016] The beneficial effects of the present application are as follows: By docking the receiving part and the plugging part, the second convex block is locked in cooperation with the receiving groove, and the elastic button is locked in cooperation with the receiving hole, which not only improves the stability and reliability of the connection, but also simplifies the disassembly and assembly process. After disassembly, the space occupation is reduced, which is convenient for transportation and storage. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional schematic diagram of the present application.

[0019] Figure 2 is a partial exploded structural schematic diagram of the present application.

[0020] Figure 3 is a schematic diagram of the receiving part of the present application.

[0021] Figure 4 is an exploded schematic diagram of the plugging sleeve of the present application.

[0022] Figure 5 is a schematic diagram of the second connecting pipe of the present application.

[0023] Figure 6 is a schematic diagram of the installation of the elastic piece of the present application.

[0024] Explanation of the reference numerals in the drawings: 1. First connecting pipe, 2. Second connecting pipe, 21. Installation groove, 3. Extension pipe, 4. Receiving part, 41. Receiving groove, 42. Receiving hole, 43. Guide projection, 5. Plugging part, 51. Connecting part, 511. Fixed groove, 512. Guide groove, 52. Plugging sleeve, 521. First convex block, 522. Second convex block, 523. Elastic groove, 524. Opening groove, 6. Elastic button, 7. First connecting hole, 8. Second connecting hole, 9. Elastic piece. Detailed Embodiments

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of the present application.

[0026] In the embodiments of the present application, please refer to Figure 1-6 As shown, the detachable extension rod of an electric tool mainly includes: a first connecting pipe 1, an extension pipe 3, and a second connecting pipe 2; a receiving portion 4 formed at the first end of the first connecting pipe 1 and the first end of the extension pipe 3, the diameter of the receiving portion 4 being larger than the diameter of the non-receiving portion 4 of the first connecting pipe 1 and the extension pipe 3, and a receiving groove 41, a receiving hole 42, and a guiding protrusion 43 being provided on the receiving portion 4; a plugging portion 5 including a connecting portion 51 and a plugging sleeve 52, the connecting portion 51 being provided at the second end of the extension pipe 3 and the first end of the second connecting pipe 2, a fixing groove 511 being provided on the connecting portion 51, a first convex block 521 and a second convex block 522 being formed on the plugging sleeve 52, the plugging sleeve 52 being fixed on the connecting portion 51 by the cooperation of the first convex block 521 and the fixing groove 511, and a spring button 6 being provided on the connecting portion 51; the plugging portion 5 can be inserted into the receiving portion 4 for fixing the two, the second convex block 522 cooperating with the receiving groove 41, and the spring button 6 cooperating with the receiving hole 42, and the two cooperate with each other, so as to detachably fix the first connecting pipe 1 and the extension pipe 3, and detachably fix the extension pipe 3 and the second connecting pipe 2, and the number of extension pipes 3 can be increased or decreased according to actual needs to obtain an appropriate length.

[0027] Next, some preferred / improved embodiments based on the above embodiments will be further elaborated. Any one or a combination of multiple of the following embodiments can be selected.

[0028] As Figure 2-4 shown, on the plugging sleeve 52, elastic grooves 523 are provided on both sides of the second convex block 522, and opening grooves 524 are provided on both sides of the first convex block 521. The provision of the elastic grooves 523 and the opening grooves 524 facilitates increasing elasticity, making it easier to press and restore the first convex block 521 and the second convex block 522.

[0029] Furthermore, one side of each of the first bump 521 and the second bump 522 is a bevel surface. When disassembling and assembling the insertion sleeve 52, the bevel surface has a guiding effect, enabling the first bump 521 and the second bump 522 to move more smoothly when inserted.

[0030] Specifically, the paired first bumps 521 are annularly distributed on the outer wall of the insertion sleeve 52, and multiple first bumps 521 cooperate with the connecting portion 51 together, making the connection between the insertion sleeve 52 and the connecting portion 51 more stable.

[0031] Furthermore, a section of the insertion sleeve 52 inserted into the connecting portion 51 is thinned, and the section not inserted into the connecting portion 51 has the same outer diameter as the connecting portion 51, facilitating the connection between the insertion sleeve 52 and the connecting portion 51, as well as the cooperation between the insertion portion 5 and the receiving portion 4.

[0032] Furthermore, one end of the insertion sleeve 52 inserted into the receiving portion 4 has a rounded corner for guiding, increasing the contact area between the insertion sleeve 52 and the receiving portion 4 and facilitating the insertion of the insertion sleeve 52.

[0033] Furthermore, a guiding groove 512 is formed on the connecting portion 51 for cooperating with corresponding protrusions on the insertion sleeve 52, for indicating and guiding functions, enabling the first bump 521 and the fixing groove 511 to be exactly in a position to cooperate.

[0034] As Figure 5-6 shown, the spring button 6 penetrates through the inner wall of the connecting portion 51, and a spring piece 9 is installed on the spring button 6. Both ends of the spring piece 9 are fixed on the inner wall of the connecting portion 51. Under the elastic action of the spring piece 9, the spring button 6 can contract into the connecting portion 51 under an external force and automatically return when the external force disappears.

[0035] Furthermore, the spring button 6 has a rounded corner for guiding and can cooperate with the guiding protrusion 43 to press the spring button 6 into the connecting portion 51, preventing the protrusion of the spring button 6 from affecting the insertion of the insertion portion 5 into the receiving portion 4.

[0036] As Figure 1 shown, a first connection hole 7 is formed on the first connection pipe 1, an installation groove 21 is formed at the second end of the second connection pipe 2, and a second connection hole 8 is formed in the installation groove 21. The first connection hole 7 is used for detachably connecting to a handle with a control function, and the second connection hole 8 is used for detachably connecting to a working head of a power tool. The handle and the working head are connected by an electric wire, and the electric wire passes through the first connection pipe 1, the extension pipe 3, and the second connection pipe 2.

[0037] During use, connect the first connecting pipe 1 to the handle for control, and connect the second connecting pipe 2 to the working head. Through the cooperation of the receiving portion 4 and the plugging portion 5, connect the first connecting pipe 1, the second connecting pipe 2 and several extension pipes 3. Increase or decrease the extension pipes 3 to obtain a suitable length for work. When not in use, the components can be disassembled and stored.

[0038] Thus far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present application. The foregoing embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A detachable extension rod for an electric tool, characterized in that: include: A first connecting pipe, an extension pipe and a second connecting pipe; A receiving portion is formed at the first end of the first connecting tube and the first end of the extension tube, the receiving portion has a diameter greater than the diameter of the first connecting tube and the extension tube, and is provided with a receiving groove, a receiving hole and a guide protrusion; The plug-in part comprises a connecting part and a plug-in sleeve, wherein the connecting part is arranged at the second end of the extension tube and the first end of the second connecting tube, a fixing groove is formed on the connecting part, a first convex block and a second convex block are formed on the plug-in sleeve, the plug-in sleeve is fixed on the connecting part through the cooperation of the first convex block and the fixing groove, and a spring button is arranged on the connecting part; The plug-in part can be inserted into the receiving part to fix the two, the second protrusion cooperates with the receiving groove, and the spring button cooperates with the receiving hole, and the two cooperate with each other, so that the first connecting tube and the extension tube are detachably fixed, and the extension tube and the second connecting tube are detachably fixed, and the number of extension tubes can be increased or decreased according to actual needs to obtain a suitable length.

2. A detachable extension rod for an electric tool according to claim 1, characterized in that: On the plug sleeve, elastic grooves are formed on both sides of the second protrusion, and open grooves are formed on both sides of the first protrusion.

3. A detachable extension rod for an electric tool according to claim 2, characterized in that: One side of the first protrusion and the second protrusion are both inclined surfaces.

4. A detachable extension rod for an electric tool according to claim 3, characterized in that: The first projections are distributed in pairs in an annular manner on the outer wall of the plug sleeve.

5. The detachable extension rod of the electric tool according to claim 1, characterized in that: The section of the plug sleeve inserted into the connection part is thinned, and the section not inserted into the connection part is consistent with the outer diameter of the connection part.

6. The detachable extension rod of a power tool according to claim 1, characterized in that: One end of the plug sleeve inserted into the receiving portion is provided with a rounded guide.

7. The detachable extension rod of a power tool according to claim 1, characterized in that: The spring button penetrates through the inner wall of the connecting part, a spring sheet is installed on the spring button, and two ends of the spring sheet are fixed on the inner wall of the connecting part.

8. The detachable extension rod of the electric tool according to claim 7, characterized in that: The spring button is provided with a rounded guide which can cooperate with the guide protrusion to press the spring button into the connecting portion.

9. The detachable extension rod of a power tool according to claim 1, characterized in that: The first connecting tube is provided with a first connecting hole, and a mounting groove is formed on the second end of the second connecting tube, and a second connecting hole is provided in the mounting groove.

10. The detachable extension rod of an electric tool according to claim 1, characterized in that: The connecting portion is provided with a guide groove for cooperating with a corresponding protrusion on the plug sleeve.

Images