Extension rod telescopic structure and gardening tool

Through the combined structure of the inner rod, outer rod, fixing sleeve and locking sleeve, the problem of the complex structure of the existing power tool telescopic tube and the exposed locking and fastening parts is solved, and a compact and simple telescopic structure and cost-reducing effect is achieved.

CN222880038UActive Publication Date: 2025-05-16ZHEJIANG SUNSEEKER IND CO LTD
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Patent Information

Application Number
CN202420999463.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-09
Publication Date
2025-05-16
Estimated Expiration
2034-05-09

AI Technical Summary

Technical Problem

The telescopic tube of existing power tools is complex in structure, and the locking and tight part is exposed, affecting the overall compactness and sensoryness.

Method used

The combination structure of the inner rod, the outer rod, the fixing sleeve and the locking sleeve are adopted. By moving the locking sleeve outside the fixing sleeve, the clamping end of the fixing sleeve is squeezed to tighten the inner rod, thereby achieving a locking state, and the locking sleeve is wrapped around the outside of the connecting part and the fixing sleeve to avoid exposure.

Benefits of technology

It realizes a compact locking state between the inner and outer rods, with a compact overall structure and a generous feel, while reducing parts and costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of electric tools, and particularly discloses an extension rod telescopic structure and a gardening tool, and the extension rod telescopic structure comprises an inner rod, an outer rod with one end arranged on the outer side of the inner rod in a sleeving manner, a fixing sleeve installed at one end of the outer rod and arranged outside the inner rod in a sleeving manner, and a locking sleeve arranged outside the fixing sleeve in a sleeving manner; wherein the outer rod comprises a rod part, a connecting part and an extending part connecting the rod part and the connecting part, the connecting part is arranged on the outer side of the end of the fixing sleeve in a sleeving mode, one part of the fixing sleeve is located between the inner rod and the locking sleeve, the other part of the fixing sleeve is located between the inner rod and the connecting part, and after the relative telescopic position of the inner rod and the outer rod is adjusted, the inner rod and the outer rod are locked. The locking sleeve completely covers the outer sides of the connecting part and the fixing sleeve, the fixing sleeve and the connecting part are not exposed, and the whole telescopic structure is compact in overall structure and elegant in appearance; moreover, the structure is simple, the number of parts is reduced, and the cost is also saved.
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Description

Technical Field

[0001] The present application relates to the field of electric tools, and in particular to an extension rod telescopic structure and a garden tool. Background Art

[0002] The working head and operating part of some electric tools are generally connected by a connecting rod. In order to increase the working range of the working head, the connecting rod will adopt a telescopic structure to adjust its length.

[0003] Through the understanding of relevant technologies, the telescopic tube of some electric tools includes an outer tube, an inner tube inserted into the outer tube, and a locking and fixing sleeve locked and fixed with the inner tube. The telescopic tube also includes a fixing sleeve, which is clamped and connected to one end of the locking and fixing sleeve, and the fixing sleeve is clamped and connected to the outer tube.

[0004] The telescopic tube structure of these power tools is relatively complex, and the exposed volume at the locking and fastening part is relatively large, which affects the overall compactness and sensory quality of the telescopic structure. Utility Model Content

[0005] The purpose of at least one specific implementation of the utility model is to solve the defects of the prior art and provide an extension rod telescopic structure and a garden tool.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] Inner rod;

[0008] An outer rod, one end of which is sleeved on the outer side of the inner rod;

[0009] A fixed sleeve is installed at one end of the outer rod and can be sleeved on the outside of the inner rod;

[0010] The locking sleeve is sleeved on the outside of the fixing sleeve, and the locking sleeve can move outside the fixing sleeve and squeeze the clamping end of the fixing sleeve so that the clamping end of the fixing sleeve clamps the inner rod;

[0011] The outer rod comprises a rod portion, a connecting portion and an extending portion connecting the rod portion and the connecting portion;

[0012] The connecting part is sleeved on the outer side of the end of the fixing sleeve away from the clamping end;

[0013] The locking sleeve can move outside the fixing sleeve so that when the clamping end of the fixing sleeve is squeezed and clamps the inner rod, the locking sleeve covers the connecting portion and the outer side of the fixing sleeve.

[0014] Further, the fixing sleeve comprises:

[0015] Main body;

[0016] A locking portion connected to one side of the main body;

[0017] A guide portion connected to the other side of the main body portion;

[0018] A buckle is provided on the guide part, and at least one mounting hole corresponding to the buckle is provided on the connecting part. The buckle is suitable for being inserted into the mounting hole so that the fixing sleeve is fixedly connected to the connecting part.

[0019] Furthermore, a boss is provided on the guide portion, and a groove corresponding to the boss is provided on the connecting portion. When the fixing sleeve is connected to the connecting portion, the boss is inserted into the groove.

[0020] Furthermore, a guiding slope is provided at the end of the guiding portion.

[0021] Furthermore, a limiting sleeve is sleeved on one end of the inner rod extending into the inner part of the outer rod, a positioning buckle is provided on one of the inner rod and the limiting sleeve, and a positioning hole corresponding to the positioning buckle is provided on the other of the inner rod and the limiting sleeve.

[0022] Furthermore, one end of the limiting sleeve faces the guide portion, and the other end is close to the end of the inner rod, wherein the inner diameter of the limiting sleeve is smaller than the inner diameter of the inner rod.

[0023] Furthermore, a limiting groove extending along the length direction of the inner rod is provided on the outer wall of the inner rod, and a limiting convex rib cooperating with the limiting groove is provided on the inner wall of the fixing sleeve.

[0024] Furthermore, a thread is provided on the main body of the fixing sleeve, the locking sleeve is threadedly matched with the fixing sleeve, a locking bevel is provided on the locking portion of the fixing sleeve, and an extrusion surface corresponding to the locking bevel is provided at the end of the locking sleeve;

[0025] When the locking sleeve moves outside the fixing sleeve, the extrusion surface presses the locking inclined surface so that the locking part contracts radially and holds the inner rod tightly.

[0026] Furthermore, the buckle and the boss can be selectively installed on the same guide portion.

[0027] The extension rod telescopic structure provided by the present application has a beneficial technical effect compared with the prior art in that: the outer rod of the present application includes a rod portion, a connecting portion and an extension portion connecting the rod portion and the connecting portion, the connecting portion is sleeved on the outer side of the end portion of the fixing sleeve, a part of the fixing sleeve is located between the inner rod and the locking sleeve, and the other part is located between the inner rod and the connecting portion, after the relative telescopic position of the inner rod and the outer rod is adjusted, the locking sleeve rotates on the outside of the fixing sleeve so that the squeezed end of the fixing sleeve hugs the inner rod, and when the inner rod and the outer rod are in a locked state, the locking sleeve completely covers the connecting portion and the outer side of the fixing sleeve, and the fixing sleeve and the connecting portion will not be exposed, and the relevant locking components between the inner rod and the outer rod of the present application are all covered and protected by the locking sleeve, and the overall structure of the entire telescopic structure is very compact and looks atmospheric; moreover, the structure of the present application is simple, reduces parts and components, and saves costs.

[0028] Another technical solution adopted by the present application is: a garden tool, characterized in that it includes:

[0029] The above-mentioned extension rod telescopic structure, working part and operating part;

[0030] The working part is connected to the inner rod of the extension rod telescopic structure, and the operating part is connected to the outer rod of the extension rod telescopic structure.

[0031] Through the above technical solution, the garden tool provided by the present application, because it is equipped with the above extension rod telescopic structure, has the corresponding technical effect of the above extension rod telescopic structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application;

[0034] Figure 2 This is an explosion diagram of Example 1 of the present application;

[0035] Figure 3 for Figure 2 A schematic diagram of the structure from another angle;

[0036] Figure 4 It is a cross-sectional schematic diagram of application embodiment 1;

[0037] Figure 5 for Figure 2 A magnified view of area A in;

[0038] Figure 6 for Figure 3 A magnified view of area B in FIG.

[0039] Figure 7 for Figure 4 A magnified view of region C in FIG.

[0040] Figure 8 This is a schematic diagram of the structure of Example 2 of the present application. DETAILED DESCRIPTION

[0041] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , an extension rod telescopic structure 100, comprising an inner rod 10, an outer rod 11 with one end sleeved outside the inner rod 10, a fixing sleeve 12 installed at one end of the outer rod 11 and sleeved outside the inner rod 10, and a locking sleeve 13 sleeved outside the fixing sleeve 12;

[0043] When the extension rod telescopic structure 100 is adjusted in length, the locking sleeve 13 can move outside the fixing sleeve 12 and squeeze the clamping end of the fixing sleeve 12 so that the clamped clamping end of the fixing sleeve 12 clamps the inner rod 10 .

[0044] The outer rod 11 includes a rod portion 111 , a connecting portion 112 and an extending portion 113 connecting the rod portion 111 and the connecting portion 112 . The connecting portion 112 is sleeved on the outer side of the end of the fixing sleeve 12 .

[0045] Specifically, the fixing sleeve 12 includes a main body 121, a locking portion 122 connected to one side of the main body 121, and a guide portion 123 connected to the other side of the main body 121. A buckle 124 is provided on the guide portion 123. At least one mounting hole 114 corresponding to the buckle 124 is provided on the connecting portion 112. When the fixing sleeve 12 is connected to the outer rod 11, the buckle 124 is inserted into the mounting hole 114 so that the fixing sleeve 12 is fixedly connected to the connecting portion 112. Among them, the locking portion 122 constitutes the clamping end of the fixing sleeve 12. After the fixing sleeve 12 is connected to the connecting portion 112 of the outer rod 11, the connecting portion 112 is sleeved on the outside of the guiding portion 123. The guiding portion 123 constitutes an end portion on the fixing sleeve 12 away from the clamping end.

[0046] Further, refer to Figures 4 to 7 The guide portion 123 is also provided with a boss 125, and the connecting portion 112 is provided with a groove 115 corresponding to the boss 125. When the fixing sleeve 12 and the connecting portion 112 are connected by the buckle 124, the boss 125 is inserted into the groove 115. It should be noted that there are multiple guide portions 123, some of which can be provided with buckles 124, and some of which can be provided with bosses 125. The function of the boss 125 is: on the one hand, it plays a role in circumferential positioning of the fixing sleeve 12 on the connecting portion 112, and on the other hand, during the locking process, it reduces the shaking between the fixing sleeve 12 and the outer rod 11 and increases the sense of tight fit.

[0047] In addition, a guiding slope 126 is provided at the end of the guiding portion 123. During assembly, the guiding slope 126 can play a guiding role and can also reduce the friction between the guiding portion 123 and the connecting portion 112 during the assembly process.

[0048] In this embodiment, a thread 127 is provided on the main body 121 of the fixing sleeve 12, the locking sleeve 13 is threadedly matched with the fixing sleeve 12, a locking bevel 128 is provided on the locking portion 122 of the fixing sleeve 12, and an extrusion surface 131 corresponding to the locking bevel 128 is provided at the end of the locking sleeve 13;

[0049] Moreover, a limiting groove 101 extending along the length direction of the inner rod 10 is provided on the outer wall thereof, and a limiting convex rib 129 cooperating with the limiting groove 101 is provided on the inner wall of the fixing sleeve 12 .

[0050] When the relative telescopic length of the inner rod 10 and the outer rod 11 needs to be adjusted, the locking sleeve 13 can be rotated, and the locking sleeve 13 will move outside the fixing sleeve 12 along the extension direction of the thread 127. When the extrusion surface 131 of the locking sleeve 13 is separated from the locking inclined surface 128, the locking portion 122 is in a radially open state. At this time, the inner rod 10 and the outer rod 11 are in a relatively active state. The inner rod 10 and the fixing sleeve 12 cooperate with each other through the limiting groove 101 and the limiting rib 129, so the inner rod 10 can only be extended and retracted relative to the fixing sleeve 12 and will not rotate. Since the fixing sleeve 12 is fixed by the buckle 1 24 is fixed on the connecting portion 112 of the outer rod 11. Similarly, when the inner rod 10 and the outer rod 11 are relatively telescopically adjusted, the inner rod 10 and the outer rod 11 will not rotate, thus ensuring the stability and smoothness of the telescopic adjustment. When the relative telescopic length of the inner rod 10 and the outer rod 11 is determined, the locking sleeve 13 is rotated in the opposite direction, and the locking sleeve 13 moves in the opposite direction on the outer side of the fixing sleeve 12 along the extension direction of the thread 127 until the extrusion surface 131 of the locking sleeve 13 applies an extrusion force to the locking inclined surface 128 of the locking portion 122, and the locking portion 122 is squeezed and radially retracted, thereby locking the inner rod 10.

[0051] When the inner rod 10 and the outer rod 11 are in a locked state, the locking sleeve 13 is completely covered on the outside of the connecting portion 112 and the fixing sleeve 12, and neither the fixing sleeve 12 nor the connecting portion 112 will be exposed. The relevant locking components between the inner rod 10 and the outer rod 11 of the present application are all covered and protected by the locking sleeve 13, and the overall structure of the entire telescopic structure is very compact and looks atmospheric. Moreover, the structure of the present application is simple, reduces parts and components, and saves costs.

[0052] Further, a limiting sleeve 14 is sleeved on one end of the inner rod 10 extending into the inner part of the outer rod 11, one of the inner rod 10 and the limiting sleeve 14 is provided with a positioning buckle, and the other of the inner rod 10 and the limiting sleeve 14 is provided with a positioning hole corresponding to the positioning buckle, and the limiting sleeve 14 is cylindrical, referring to Figure 5 It should be noted that, in order to conveniently display the structure of the limiting sleeve 14, the limiting sleeve 14 is displayed by cutting its internal structure.

[0053] Specifically, in the present embodiment, one or more positioning buckles 141 are provided on the inner wall of the limiting sleeve 14, and a positioning hole 102 corresponding to the positioning buckle 141 is provided on the inner rod 10. After the positioning buckle 141 is engaged with the positioning hole 102, the limiting sleeve 14 is fixedly installed on the end of the inner rod 10, and one end of the limiting sleeve 14 after installation faces the guide portion 123 of the fixing sleeve 12, and the other end is close to the end of the inner rod 10. One of the benefits of installing the limiting sleeve 14 is that when the inner rod 10 is in a relatively elongated state relative to the outer rod 11, when the inner rod 10 reaches the tensile limit relative to the outer rod 11, the end of the limiting sleeve 14 will conflict with the guide portion 123 of the fixing sleeve 12, and generate tensile resistance of the inner rod 10, thereby preventing the end of the inner rod 10 from coming out of the outer rod 11;

[0054] In addition, since wiring needs to be routed in the inner cavities of the inner rod 10 and the outer rod 11, in this embodiment, the inner diameter of the limit sleeve 14 is smaller than the inner diameter of the inner rod 10. When routing the wiring, the limit sleeve 14 can support the line, and the line will not contact the end face of the inner rod 10, thereby preventing the surface of the line from being scratched by the end of the inner rod.

[0055] Example 2

[0056] Reference Figure 8 Based on the same technical concept, the embodiment of the present application provides a garden tool 200, which includes the extension rod telescopic structure 100, the working part 20 and the operating part 21 in the above embodiment 1;

[0057] The working part 20 is connected to the inner rod 10 of the extension rod telescopic structure 100, and the operating part 21 is connected to the outer rod 11 of the extension rod telescopic structure 100. The working part 20 includes various types of garden tool heads.

[0058] The garden tool 200 provided in the present application, because it is equipped with the above-mentioned extension rod telescopic structure 100, has the corresponding technical effects of the above-mentioned extension rod telescopic structure 100.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An extension rod telescopic structure, comprising: Inner rod; An outer rod, one end of which is sleeved on the outer side of the inner rod; A fixing sleeve, which is mounted on one end of the outer rod and can be sleeved on the outside of the inner rod; A locking sleeve, which is sleeved on the outside of the fixing sleeve, and the locking sleeve can move outside the fixing sleeve and squeeze the clamping end of the fixing sleeve so that the clamping end of the fixing sleeve clamps the inner rod; Characterized in that the outer rod comprises a rod portion, a connecting portion and an extending portion connecting the rod portion and the connecting portion; The connecting portion is sleeved on the outer side of the end portion of the fixing sleeve away from the clamping end; The locking sleeve can move outside the fixing sleeve so that when the clamping end of the fixing sleeve is squeezed and clamps the inner rod, the locking sleeve covers the connecting portion and the outer side of the fixing sleeve.

2. The extension rod telescopic structure according to claim 1, characterized in that: The fixing sleeve comprises: Main body; A locking portion connected to one side of the main body; A guide portion connected to the other side of the main body; The guide portion is provided with a buckle, the connecting portion is provided with at least one mounting hole corresponding to the buckle, and the buckle is suitable for being inserted into the mounting hole so that the fixing sleeve is fixedly connected to the connecting portion.

3. The extension rod telescopic structure according to claim 2, characterized in that: The guide portion is also provided with a boss, and the connecting portion is provided with a groove corresponding to the boss. When the fixing sleeve is connected to the connecting portion, the boss is inserted into the groove.

4. The extension rod telescopic structure according to claim 2, characterized in that: The end of the guide portion is provided with a guide slope.

5. The extension rod telescopic structure according to claim 2 or 3, characterized in that: A limiting sleeve is sleeved on one end of the inner rod extending into the inner part of the outer rod, a positioning buckle is provided on one of the inner rod and the limiting sleeve, and a positioning hole corresponding to the positioning buckle is provided on the other of the inner rod and the limiting sleeve.

6. The extension rod telescopic structure according to claim 5, characterized in that: One end of the limiting sleeve faces the guiding portion, and the other end is close to the end of the inner rod, wherein the inner diameter of the limiting sleeve is smaller than the inner diameter of the inner rod.

7. The extension rod telescopic structure according to claim 5, characterized in that: The outer wall of the inner rod is provided with a limiting groove extending along the length direction thereof, and the inner wall of the fixing sleeve is provided with a limiting convex rib matched with the limiting groove.

8. The extension rod telescopic structure according to claim 2, characterized in that: The main body of the fixing sleeve is provided with a thread, the locking sleeve is threadedly matched with the fixing sleeve, the locking portion of the fixing sleeve is provided with a locking inclined surface, and the end of the locking sleeve is provided with an extrusion surface corresponding to the locking inclined surface; When the locking sleeve moves outside the fixing sleeve, the extrusion surface presses the locking inclined surface so that the locking portion contracts radially and holds the inner rod tightly.

9. The extension rod telescopic structure according to claim 3, characterized in that: The buckle and the boss can be selectively installed on the same guide portion.

10. A garden tool, characterized in that: include: The extension rod telescopic structure according to any one of claims 1 to 9; Work Department; Operations Department; Wherein, the working part is connected to the inner rod of the extension rod telescopic structure, and the operating part is connected to the outer rod of the extension rod telescopic structure.