Simple detachable hand tool

Abstract

The utility model relates to handheld tool field, concretely is a simple and easy detachable hand tool. It includes outer sleeve, blade and fastening assembly, outer sleeve front end has at least one set of opposite distribution's hole group, and each hole group includes two limit holes, and blade end is clamped in the limit hole inboard, and fastening assembly clamps and draws the blade end to fasten the blade at the limit hole, or pushes and presses the blade tightly at the limit hole. The utility model can replace the blade separately, and according to the need of use, uses the flexible, when the blade is damaged, need not purchase the whole tool, is more economical.

Description

Technical Field

[0001] This utility model relates to the field of hand tools, and in particular to a simple detachable hand tool. Background Technology

[0002] In gardening and outdoor activities, tools are commonly used. Some of these tools have blades. Most tools are fixed, folding, or telescopic structures, and the blades cannot be disassembled. When a blade is damaged, the entire tool must be purchased, which is wasteful. Furthermore, different blades cannot be replaced according to the needs of use, resulting in poor flexibility. Utility Model Content

[0003] The purpose of this utility model is to address the problems existing in the background technology by proposing a simple detachable hand tool that can be disassembled and replaced separately. The blade can be replaced as needed, making it flexible to use. When the blade is damaged, there is no need to purchase the entire tool, which is more economical.

[0004] The present invention provides a simple detachable hand tool, comprising an outer sleeve, a blade, and a fastening assembly; the front end of the outer sleeve has at least one set of relatively distributed holes, each set of holes including two limiting holes; the end of the blade is engaged inside the limiting holes; the fastening assembly clamps and pulls the end of the blade back to fasten the blade at the limiting holes, or pushes forward and presses the blade against the limiting holes.

[0005] Preferably, the fastening assembly includes a fastening cylinder and a screw cylinder. The front end of the fastening cylinder has multiple clamping heads, and there is a rearwardly extending strip-shaped notch between adjacent clamping heads. The screw cylinder is threaded to the rear of the fastening cylinder. When the fastening cylinder is pulled back, the multiple clamping heads are squeezed into the inner cavity of the outer sleeve and retract, clamping the end of the blade.

[0006] Preferably, the outer peripheral surface of the clamping head is a conical inclined surface one, and the front part of the inner side of the outer sleeve has a conical inclined surface two.

[0007] Preferably, the outer sleeve has external threads on its outer periphery, and the fastening assembly includes a clamping sleeve and an anti-detachment sleeve threadedly connected to the external threads of the outer sleeve, with the clamping sleeve located in front of the anti-detachment sleeve.

[0008] Preferably, both sides of the blade tip have outwardly protruding bosses.

[0009] Preferably, the front part of the outer sleeve is a cylindrical or regular polygonal cylinder.

[0010] Preferably, the limiting hole is a "T" shaped hole.

[0011] Preferably, the limiting hole is a rectangular hole.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This invention allows for individual blade disassembly and replacement, enabling flexible use and eliminating the need to purchase the entire tool kit when a blade is damaged, thus saving costs. Blade installation and removal are simple and convenient. Users can selectively switch between different assembly methods to achieve various functionalities by clamping different types of blades. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0015] Figure 2 for Figure 1 Exploded view of the structure;

[0016] Figure 3 This is a schematic diagram of the outer sleeve structure in Embodiment 2 of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the blade clamping device in Embodiment 3 of this utility model;

[0018] Figure 5 for Figure 4 Exploded view of the structure;

[0019] Figure 6 This is a schematic diagram of the structure of the second blade in Embodiment 3 of this utility model;

[0020] Figure 7 This is a schematic diagram of the second blade.

[0021] Figure 8 This is a schematic diagram of the structure of the clamping blade three in Embodiment 3 of this utility model;

[0022] Figure 9 This is a schematic diagram of the structure of Embodiment 4 of this utility model without the blade clamped.

[0023] Reference numerals in the attached drawings: 1. Outer sleeve; 101. Limiting hole; 2. Fastening sleeve; 21. Clamping head; 201. Strip notch; 3. Screw; 4. Blade 1; 41. Boss 1; 5. Clamping sleeve; 6. Anti-detachment sleeve; 7. Blade 2; 71. Boss 2; 8. Blade 3. Detailed Implementation

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown in the figure, this embodiment proposes a simple detachable hand tool, including an outer sleeve 1, a blade 4, and a fastening assembly.

[0026] The front part of the outer sleeve 1 is cylindrical with anti-slip texture on the outer periphery. The front end of the outer sleeve 1 has at least one set of relatively distributed holes. Each set of holes includes two limiting holes 101. The limiting holes 101 are "T" shaped holes with a certain curvature.

[0027] The end of blade 4 is engaged inside the limiting hole 101. Specifically, both sides of the end of blade 4 have protruding bosses 41 that extend vertically into the limiting hole 101. Then, blade 4 is rotated to position the bosses 41 offset from the opening at the front of the limiting hole 101. The front of blade 4 is a bayonet, and the sides are a cleaver and a sickle, respectively, making it a multi-functional structure. Users can switch the function of this tool according to their needs.

[0028] The fastening assembly clamps and pulls back the end of the blade 4 to secure it in the limiting hole 101. The fastening assembly includes a fastening cylinder 2 and a screw cylinder 3. The front end of the fastening cylinder 2 has multiple clamping heads 21, and there is a rearwardly extending strip-shaped notch 201 between adjacent clamping heads 21. The outer circumference of the screw cylinder 3 has anti-slip textures. The screw cylinder 3 is threaded to the rear of the fastening cylinder 2. When the screw cylinder 3 pulls back the fastening cylinder 2, the multiple clamping heads 21 are squeezed into the inner sleeve 1 and retract, clamping the end of the blade 4. The front end of the screw cylinder 3 abuts against the rear end of the outer sleeve 1.

[0029] To make the clamping head 21 retract more smoothly, the outer circumference of the clamping head 21 is designed as a conical slope one, and the inner front part of the outer sleeve 1 is designed as a conical slope two. The conical slopes are compatible and reduce wear.

[0030] Example 2

[0031] This embodiment proposes a simple, detachable hand tool, such as Figure 3 As shown, the difference between this embodiment and embodiment one is that the front part of the outer sleeve 1 is a regular polygonal cylinder. At this time, the limiting hole 101 is a "T" shaped hole, but it does not have an arc. Instead, it is a straight hole, which can also insert the blade 4 along the axial direction of the outer sleeve 1. The boss part 41 is inserted into the inner side of the limiting hole 101. Then, the screw cylinder 3 is rotated to pull back the fastening cylinder 2. The fastening cylinder 2 is used to pull back and fasten the clamped blade 4 to the inner side of the limiting hole 101.

[0032] Example 3

[0033] like Figures 4-8As shown, this embodiment presents a simple detachable hand tool. Compared to Embodiments 1 and 2, in this embodiment, the front of the outer sleeve 1 is cylindrical, and the outer circumference of the outer sleeve 1 has external threads. Blade 1 4 has protruding bosses 41 on both sides of its end. Blade 2 7 also has protruding bosses 71 on both sides of its end, and the front and sides of blade 2 7 are sharpened. Both blade 1 4 and blade 2 7 can be inserted into the "T"-shaped limiting hole 101 through the bosses on both sides of their ends, and then rotated to lock them inside. Blade 3 8 can be directly installed laterally through the two opposing limiting holes 101. The width of the end of blade 3 8 is smaller than the width of the front, allowing for locking installation, and the front of blade 3 8 is sharpened.

[0034] There are two types of fastening components, namely Fastening Component One and Fastening Component Two. One of the two fastening components can be used to fasten the blade.

[0035] The fastening assembly includes a fastening cylinder 2 and a screw cylinder 3. The screw cylinder 3 has anti-slip textures on its outer circumference for easy rotation. The front end of the fastening cylinder 2 has multiple clamping heads 21, and there is a rearwardly extending strip-shaped notch 201 between adjacent clamping heads 21. The screw cylinder 3 is threaded to the rear of the fastening cylinder 2. When the fastening cylinder 2 is pulled back, the multiple clamping heads 21 are squeezed into the inner sleeve 1 and retract, clamping the end of the first blade 4 or the second blade 7.

[0036] Fastening assembly two includes a clamping sleeve 5 and an anti-detachment sleeve 6 threadedly connected to the external thread of the outer sleeve 1. Both the clamping sleeve 5 and the anti-detachment sleeve 6 have anti-slip textures on their outer circumferences for easy rotation. The clamping sleeve 5 is located in front of the anti-detachment sleeve 6. For blade 4 and blade 7, which are installed axially along the outer sleeve 1 at the "T"-shaped limiting hole 101, and blade 8, which is installed radially along the "T"-shaped limiting hole 101, the clamping sleeve 5 is pushed forward and presses the boss portion 41 of blade 4, the boss portion 71 of blade 7, or blade 8 against the limiting hole 101. The rear side is then screwed forward to tighten the anti-detachment sleeve 6 to prevent the clamping sleeve 5 from loosening.

[0037] Example 4

[0038] This embodiment proposes a simple, detachable hand tool, such as Figure 9 As shown, the difference between this embodiment and Embodiment 3 is that the front part of the outer sleeve 1 is a regular polygonal cylinder, and the limiting hole 101 is a rectangular hole. In this case, the fastening component 2 cannot be used to push and press the blade 4 or blade 7 installed in the limiting hole 101. Instead, the boss 41 or boss 71 must first be inserted into the inside of the limiting hole 101, and then the fastening component 1 is used to clamp and pull the blade 4 or blade 7 back. When inserting the boss, the blade is inserted along the diagonal direction of the regular polygonal cylinder, and then the blade is rotated to turn the boss to the inside of the limiting hole 101.

[0039] In summary, this utility model allows for the independent disassembly and replacement of the blade, enabling flexible use and eliminating the need to purchase the entire tool when the blade is damaged, thus saving resources. When installing the blade, the screw cylinder 3 is rotated to pull back the fastening cylinder 2, which secures the blade, with its end extending into the strip-shaped notch 201, to the limiting hole 101. To remove the blade, the screw cylinder 3 is rotated in the opposite direction, pushing the fastening cylinder 2 forward. The blade is rotated until the protrusion aligns with the front opening of the limiting hole 101. The fastening cylinder 2 is then pushed forward, releasing the clamping head 21 and allowing the blade to be removed. Alternatively, the blade can be secured to the limiting hole 101 by tightening the clamping cylinder 5 forward, with the anti-detachment cylinder 6 providing rear-side anti-detachment protection to ensure a secure fit. Disassembly is simple: the clamping cylinder 5 is rotated in the opposite direction to release the forward clamping force on the blade, allowing for easy removal. Users can selectively switch between different assembly methods according to their needs, offering high flexibility. Different types of blades can be clamped to achieve different functions.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A simple, detachable hand tool, characterized in that, include: The outer sleeve (1) has at least one set of relatively distributed holes at its front end, each set of holes including two limiting holes (101); The blade is positioned so that its end is locked inside the limiting hole (101); The fastening assembly clamps and pulls back the end of the blade to secure it in the limiting hole (101), or pushes forward and presses the blade into the limiting hole (101).

2. The simple detachable hand tool according to claim 1, characterized in that, The fastening assembly includes a fastening cylinder (2) and a screw cylinder (3). The front end of the fastening cylinder (2) has multiple clamping heads (21), and there is a rearwardly extending strip notch (201) between adjacent clamping heads (21). The screw cylinder (3) is threaded to the rear of the fastening cylinder (2). When the fastening cylinder (2) is pulled back, the multiple clamping heads (21) are squeezed into the inner part of the outer sleeve (1) and retract, clamping the end of the blade.

3. A simple detachable hand tool according to claim 2, characterized in that, The outer circumference of the clamping head (21) is a conical slope one, and the front part of the inner side of the outer sleeve (1) has a conical slope two.

4. A simple detachable hand tool according to claim 1, characterized in that, The outer sleeve (1) has external threads on its outer periphery. The fastening assembly includes a clamping sleeve (5) and an anti-detachment sleeve (6) that are threaded to the external threads of the outer sleeve (1). The clamping sleeve (5) is located in front of the anti-detachment sleeve (6).

5. A simple detachable hand tool according to claim 1, characterized in that, Both sides of the blade tip have outwardly protruding bosses.

6. A simple detachable hand tool according to claim 5, characterized in that, The front part of the outer sleeve (1) is a cylindrical or regular polygonal cylinder.

7. A simple detachable hand tool according to claim 6, characterized in that, The limiting hole (101) is a "T" shaped hole.

8. A simple detachable hand tool according to claim 6, characterized in that, The limiting hole (101) is a rectangular hole.

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