Wrench with telescopic handle

Abstract

The utility model relates to the technical field of wrenches, in particular to a wrench with a telescopic handle, which comprises a connecting handle, extension handles are fixed at two ends of the connecting handle, the extension handles are inserted on the surface of the wrench handle, an opening is arranged on the surface of the wrench handle, a hand screw is screwed on the surface of the wrench handle, and the extension handles are clamped after the hand screw is locked. The wrench with the telescopic handle has the advantages that a user can easily adjust the length of the handle through the design of the hand screwing screw. Extra tools are not needed, and the extension handle can be clamped or released only by rotating the hand-screwing screw rod, so that the length of the force arm is adjusted. The design not only simplifies the operation steps, but also improves the working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wrench, specifically handle telescopic wrench. BACKGROUND

[0002] In mechanical maintenance, assembly and disassembly operations, wrench is one of indispensable tools. The traditional wrench usually has fixed force arm length, which limits its use flexibility and application range to a certain extent. Especially when dealing with fasteners of different sizes or positions, the wrench of fixed length may not meet all needs, resulting in low work efficiency or inconvenient operation.

[0003] To solve this problem, there are various telescopic handle wrench designs on the market. These wrenches change the force arm by adjusting the handle length to adapt to the needs of different working scenarios. However, some existing designs may have problems such as complex operation, insufficient stability or limited adjustment range when adjusting the handle length. For example, some wrenches may require tools for length adjustment, increasing the operation difficulty; some other wrenches may have unreasonable adjustment mechanism design, causing the handle to loosen or slip during use, affecting work efficiency and safety. SUMMARY

[0004] The utility model aims at providing a telescopic handle wrench to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a telescopic handle wrench, comprising a connecting handle, both ends of the connecting handle are fixed with extension handles, the extension handles are inserted into the surface of the wrench handle, the surface of the wrench handle is provided with an opening, and the surface of the wrench handle is screwed with a hand screw rod. The hand screw rod clamps the extension handle after locking.

[0006] Preferably, the top surface of the extension handle is provided with a slot, the long side length of the slot is equal to the long side length of the extension handle, the inside of the slot is fixed with a rubber strip, the long side length of the rubber strip is equal to the long side length of the extension handle, and the thickness of the rubber strip is greater than the height of the slot.

[0007] Preferably, one end of the wrench handle is provided with a slot, the extension handle is inserted into the slot, and the depth of the slot is equal to the long side length of the extension handle.

[0008] Preferably, the top surface of the wrench handle is provided with a second slot, and the hand screw rod is screwed into the bottom surface of the second slot.

[0009] Preferably, the bottom surface of the wrench handle is provided with a sliding groove, the inside of the sliding groove is slidingly connected with a sliding block, the height of the sliding block is less than the height of the sliding groove, the bottom surface of the sliding block is screwed with a screw, and the screw is screwed into the bottom surface of the extension handle after penetrating through the sliding block.

[0010] Preferably, the sliding slot is communicated with the insertion slot, and the length of the long side of the sliding slot is less than that of the insertion slot.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The handle telescopic wrench provided by the utility model can easily adjust the length of the handle through the design of the hand screw rod. Without using additional tools, the extension handle can be clamped or released by rotating the hand screw rod, so as to adjust the length of the force arm. This design not only simplifies the operation steps, but also improves the work efficiency. Through the design of the sliding slot and the sliding block, the possibility of the extension handle being completely separated from the insertion slot is limited, and the user is allowed to freely adjust the length of the force arm within a certain range. This design not only meets the needs of fasteners of different sizes, but also improves the applicability and flexibility of the wrench. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a structural top view of the utility model;

[0015] Figure 3 It is Figure 2 It is a structural sectional view of A-A in the utility model;

[0016] Figure 4 It is Figure 3 It is an enlarged schematic view of the structure of A in the utility model;

[0017] Figure 5 It is an enlarged schematic view of the structure of B in the utility model; Figure 3

[0018] Figure 6 It is a schematic view of the connection structure of the connecting handle and the extension handle in the utility model;

[0019] Figure 7 It is a schematic view of the wrench handle structure in the utility model.

[0020] In the figure: connecting handle 1, extension handle 2, missing slot 3, rubber strip 4, insertion slot 5, wrench handle 6, opening 7, missing slot two 8, hand screw rod 9, sliding slot 10, sliding block 11, screw 12. DETAILED DESCRIPTION

[0021] ​In order to make the utility model purposes, technical solutions carry out clearly, complete description, and the advantage is more clear and clear, the following combining with the drawings to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, rather than all the embodiment, only use to explain the embodiment of the utility model, and do not use to limit the embodiment of the utility model, the ordinary skill in the art of all other embodiments obtained under the premise of not making the creative labor, belong to the scope of the utility model protection.

[0022] Please refer to Figures 1-7 The utility model provides a technical scheme: a handle telescopic wrench, including connecting handle 1, both ends of connecting handle 1 are fixed with extension handle 2, extension handle 2 is inserted in the surface of wrench handle 6, the top surface of extension handle 2 is equipped with the slot 3, the long side length of slot 3 is equal to the long side length of extension handle 2, the inside of slot 3 is fixed with lotus rubber strip 4, the long side length of rubber strip 4 is equal to the long side length of extension handle 2, the thickness of rubber strip 4 is greater than the height of slot 3, one end of wrench handle 6 is equipped with the slot 5, extension handle 2 is inserted in the slot 5, the depth of slot 5 is equal to the long side length of extension handle 2.The surface of wrench handle 6 is equipped with opening 7, the surface of wrench handle 6 is screwed with hand screw rod 9, after hand screw rod 9 locks, extension handle 2 is clamped;The top surface of wrench handle 6 is equipped with slot two 8, hand screw rod 9 is screwed in the bottom surface of slot two 8.When two extension handles 2 are all completely inserted in corresponding slot 5, at this time, the minimum distance between two wrench handle 6 end portions, when using wrench handle 6 through opening 7 to screw the nut, the minimum force arm, when the force arm needs to be adjusted, loosen hand screw rod 9, when hand screw rod 9 no longer clamps extension handle 2, pull extension handle 2 and move to the outside of slot 5, then back on hand screw rod 9 clamps rubber strip 4, increase the friction between hand screw rod 9 and extension handle 2, avoid extension handle 2 to slide in slot 5 at will, by pulling out extension handle 2 from slot 5, realize the adjustment of wrench force arm, when the force arm is greater, use wrench to screw the nut more labor-saving.

[0023] The bottom surface of wrench handle 6 is equipped with sliding slot 10, the inside of sliding slot 10 is slidably connected with sliding block 11, the height of sliding block 11 is less than the height of sliding slot 10, the bottom surface of sliding block 11 is screwed with screw 12, after screw 12 penetrates sliding block 11, is screwed in the bottom surface of extension handle 2;Sliding slot 10 is communicated with slot 5, the long side length of sliding slot 10 is less than the long side length of slot 5;The reason why sliding block 11 is installed at the bottom of extension handle 2 is to avoid adjusting the force arm, extension handle 2 is completely separated from slot 5, that is, after sliding block 11 is blocked in one end of sliding slot 10, extension handle 2 cannot continue to separate, when extension handle 2 needs to be removed from slot 5, first loosen screw 12, after screw 12 is separated from the surface of extension handle 2, pull out sliding block 11 from sliding slot 10, then extension handle 2 can be separated from slot 5.

[0024] The use process of the telescopic handle wrench is as follows:

[0025] Insert the two extension handles 2 into the corresponding slots 5 of the wrench handles 6 completely until the ends of the extension handles 2 contact the bottoms of the slots 5. Adjust and lock the hand screw: find the hand screw 9 through the opening 7, rotate the hand screw 9 until it tightly clamps the extension handle 2 (if the extension handle 2 is directly inserted without passing through the rubber strip, the metal part is directly clamped; if it passes through the rubber strip, the rubber strip 4 is clamped to increase the friction). Gently try to pull the extension handle 2 to confirm that it will not slide due to external force, indicating that the hand screw 9 has been properly locked. Rotate the hand screw 9 counterclockwise until it is completely loosened and no longer exerts pressure on the extension handle 2. According to the needs, pull the extension handle 2 out of the slot 5 moderately to increase or decrease the length of the force arm. Observe the position of the sliding block 11 to ensure that it moves within the sliding groove 10 and does not reach the end of the sliding groove. When the extension handle 2 is adjusted to the desired position, rotate the hand screw 9 again to clamp the rubber strip 4 (or directly clamp the metal part of the extension handle 2), ensuring that the extension handle is stable and does not slide. By gently shaking the wrench, confirm that the extension handle 2 is stable and does not move in the new position. Use the tool to rotate the screw 12 counterclockwise until it is completely loosened from the bottom surface of the extension handle 2. Gently pull the sliding block 11 out of the sliding groove 10, taking care not to damage the sliding groove or the sliding block. After the sliding block is removed, the extension handle 2 can be completely pulled out of the slot 5. Store the disassembled parts properly to avoid loss and prepare for the next use.

[0026] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A retractable handle wrench, comprising a connecting handle (1), characterized in that: Both ends of the connecting handle (1) are fixed with extension handles (2). The extension handles (2) are inserted into the surface of the lever handle (6). An opening (7) is opened on the surface of the lever handle (6). A hand screw (9) is screwed onto the surface of the lever handle (6). After the hand screw (9) is locked, it clamps the extension handle (2).

2. A retractable handle wrench according to claim 1, characterized in that: The top surface of the extension handle (2) is provided with a notch (3), the length of the long side of the notch (3) is equal to the length of the long side of the extension handle (2), and a rubber strip (4) is fixed inside the notch (3), the length of the long side of the rubber strip (4) is equal to the length of the long side of the extension handle (2), and the thickness of the rubber strip (4) is greater than the height of the notch (3).

3. A retractable handle wrench according to claim 1, characterized in that: One end of the lever (6) is provided with a slot (5), and the extension handle (2) is inserted into the slot (5). The depth of the slot (5) is equal to the length of the long side of the extension handle (2).

4. A retractable handle wrench according to claim 1, characterized in that: The top surface of the lever handle (6) is provided with a notch 2 (8), and the hand screw (9) is screwed to the bottom surface of the notch 2 (8).

5. A retractable handle wrench according to claim 3, characterized in that: The bottom surface of the lever handle (6) is provided with a sliding groove (10), and a slider (11) is slidably connected inside the sliding groove (10). The height of the slider (11) is less than the height of the sliding groove (10). A screw (12) is screwed onto the bottom surface of the slider (11). The screw (12) passes through the slider (11) and is screwed onto the bottom surface of the extension handle (2).

6. A retractable handle wrench according to claim 5, characterized in that: The groove (10) connects to the slot (5), and the length of the long side of the groove (10) is less than the length of the long side of the slot (5).

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