A tool with detachable blades

Abstract

The utility model relates to handheld tool field, concretely is a tool of detachable blade. It includes outer sleeve, spacing sleeve, blade, fastening cylinder and push -and -pull screw cylinder, the inner side of outer sleeve is through, and the outer periphery front section of outer sleeve has outer thread, the front part of spacing sleeve has the limit hole, and spacing sleeve is connected in the outer thread department of outer sleeve with thread, the tail end of blade is located in the inner side of spacing sleeve, fastening cylinder is arranged in the inner side of outer sleeve, and fastening cylinder front end has a plurality of abutting head parts, and fastening cylinder front section has a plurality of for the strip -shaped gap of blade tail end extension, and the outer periphery of abutting head part has the inclined plane, push -and -pull screw cylinder is connected with fastening cylinder rear section with thread, and push -and -pull screw cylinder front end and outer sleeve rear end abut. The utility model can separate the blade, and according to the need of use is replaced, is more flexible, when the blade is damaged, and the new blade can be replaced, 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 tool with a detachable blade. Background Technology

[0002] In gardening and outdoor activities, tools are commonly used. Some of these tools have blades. Most tools are one-piece fixed structures, folding structures, or telescopic structures. Their size is generally no longer than the length of a palm. The blades cannot be disassembled, so when a blade is damaged, the entire tool must be purchased again, which is wasteful. Furthermore, different blades cannot be replaced according to usage needs, 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 tool with a detachable blade. The blade can be removed separately and replaced as needed, which is more flexible. When the blade is damaged, a new blade can be replaced without purchasing the entire tool, thus saving money.

[0004] The present invention provides a tool with a detachable blade, comprising an outer sleeve, a limiting sleeve, a blade, a fastening sleeve, and a push-pull screw cylinder. The inner side of the outer sleeve is through, and the front section of the outer circumference of the outer sleeve has an external thread. The front part of the limiting sleeve has a limiting hole, and the limiting sleeve is threadedly connected to the external thread of the outer sleeve. The end of the blade is located inside the limiting sleeve. The fastening sleeve passes through the inner side of the outer sleeve, and the front end of the fastening sleeve has multiple abutment portions. The front section of the fastening sleeve has multiple strip-shaped notches for the end of the blade to extend into, and the outer circumference of the abutment portions has a bevel. The push-pull screw cylinder is threadedly connected to the rear section of the fastening sleeve, and the front end of the push-pull screw cylinder abuts against the rear end of the outer sleeve. When the push-pull screw cylinder pulls the fastening sleeve backward, the bevels of the multiple abutment portions abut against the front end of the outer sleeve and retract inward to clamp the blade installed along the length direction of the outer sleeve. When the push-pull screw cylinder pushes the fastening sleeve forward, the front ends of the multiple abutment portions press the blade, which passes laterally through the limiting hole, against the inner wall of the front end of the limiting hole.

[0005] Preferably, the outer sleeve is threadedly connected to a positioning screw that presses the limiting sleeve forward.

[0006] Preferably, rubber pads are provided between the outer sleeve and the positioning screw, as well as between the positioning screw and the limiting sleeve.

[0007] Preferably, the limiting sleeve is a cylindrical structure, the limiting hole is a T-shaped notch and two are evenly distributed around the limiting sleeve, and the blade installed along the length direction of the outer sleeve has a locking platform on both sides of the end width direction.

[0008] Preferably, the inner side of the limiting hole has a groove, and the distance between the outer ends of the two clamping parts at both ends of the blade is greater than the inner diameter of the limiting sleeve and less than the maximum distance between the two grooves.

[0009] Preferably, the limiting sleeve has a rectangular cylindrical structure, and the limiting holes are rectangular holes and are evenly distributed in two, three or four around the limiting sleeve.

[0010] Preferably, the inner circumference of the limiting sleeve has four segmented internal threads evenly distributed around the center of the limiting sleeve, and the four segmented internal threads are part of a complete internal thread.

[0011] Preferably, the segmented internal thread is located behind the limiting hole.

[0012] Preferably, the inner side of the front end of the outer sleeve has a guide slope that is adapted to the abutment part.

[0013] Preferably, the external thread direction of the outer sleeve is opposite to the thread direction at the threaded connection between the push-pull sleeve and the fastening sleeve.

[0014] Compared with the prior art, this utility model has the following beneficial technical effects: This utility model allows for the individual disassembly of blades installed along the length direction or transversely, enabling replacement as needed, which is more flexible. When a blade is damaged, a new blade can be replaced without purchasing the entire tool, thus saving resources. For blade one and blade two installed along the length of the outer sleeve, the fastening cylinder can be pulled back or pushed forward by rotating the push-pull screw to tighten or loosen the fastening of blade one (or blade two). For blade three installed transversely, the fastening cylinder can be pushed forward or pulled back by rotating the push-pull screw to tighten or loosen the fastening of blade three. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 for Figure 1 Exploded view of the structure;

[0017] Figure 3 This is a schematic diagram of the structure of the limiting sleeve in Embodiment 1 of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the blade and the limiting sleeve in another structural form of Embodiment 1 of this utility model;

[0019] Figure 5 for Figure 4 A schematic diagram of the structure of the limiting sleeve 1 in the middle;

[0020] Figure 6 This is a schematic diagram of the second blade.

[0021] Figure 7 This is a schematic diagram of the structure of Embodiment 1 of this utility model, showing the blade inserted from the side and clamped together.

[0022] Figure 8This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0023] Figure 9 for Figure 8 The structural diagram of the limiting sleeve 2 in the middle.

[0024] Reference numerals in the attached drawings: 1. Outer sleeve; 2. Positioning screw sleeve; 3. Limiting sleeve one; 301. Limiting hole one; 3011. Slot; 4. Fastening sleeve; 41. Abutment part; 401. Strip notch; 5. Push-pull screw sleeve; 6. Blade one; 61. Clamping platform part; 7. Blade two; 8. Blade three; 9. Limiting sleeve two; 901. Limiting hole two. Detailed Implementation

[0025] Example 1

[0026] like Figures 1-3 As shown, the tool with a detachable blade proposed in this embodiment includes an outer sleeve 1, a limiting sleeve 3, a blade, a fastening sleeve 4, and a push-pull screw sleeve 5.

[0027] like Figure 2 As shown, the inner side of the outer sleeve 1 is through, and the front section of the outer periphery of the outer sleeve 1 has external threads.

[0028] The blade tip is located inside the limiting sleeve 3.

[0029] like Figures 1-3 As shown, the limiting sleeve 3 has a limiting hole 301 at its front, and the limiting sleeve 3 is threaded to the external thread of the outer sleeve 1. The limiting sleeve 3 has a cylindrical structure, and the limiting hole 301 is a T-shaped notch with two holes evenly distributed around the limiting sleeve 3. The blade installed along the length direction of the outer sleeve 1 has a retaining plate 61 on both sides of its width direction. This blade is blade 6. By inserting the end of blade 6 into the limiting hole 301 and rotating blade 6, the retaining plate 61 can be rotated to one end inside the limiting hole 301. When the blade 6 is subsequently fastened by the fastening sleeve 4, blade 6 is not easy to loosen or deflect during use.

[0030] In addition to the blade 6 being able to be installed along the length of the outer sleeve 1, it can also be used as follows: Figure 6 The blade shown is of the form 7 and is installed along the length of the outer sleeve 1. However, the two ends of the blade 7 do not have a locking part 61 and cannot be locked into the inner side of the limiting hole 301. The limiting sleeve 3 can only be used to limit the blade 7 on the outer periphery to prevent the blade 7 from deflecting excessively when using this tool.

[0031] The fastening cylinder 4 is inserted inside the outer sleeve 1. The front end of the fastening cylinder 4 has multiple abutment portions 41, and the front section of the fastening cylinder 4 has multiple strip-shaped notches 401 for the blade tip to extend into. The outer periphery of the abutment portion 41 has a bevel, which can be an incomplete conical bevel or a straight bevel, guiding it as it moves backward to abut against the front end of the outer sleeve 1 and continues to move backward. The inner side of the front end of the outer sleeve 1 has a guide bevel adapted to the abutment portion 41. Due to the design of the strip-shaped notches 401, the multiple abutment portions 41 can converge inward, narrowing the gap between them, which can be used to clamp the blade tip (blade 6 or blade 7). As the fastening cylinder 4 moves forward relative to the outer sleeve 1, the bevel gradually disengages from the outer sleeve 1, the multiple abutment portions 41 gradually unfold and reset, and the gap between the strip-shaped notches 401 gradually increases and resets, releasing the clamp on the blade (blade 6 or blade 7), at which point the blade (blade 6 or blade 7) can be removed.

[0032] like Figure 1 and Figure 2 As shown, the push-pull screw cylinder 5 is threadedly connected to the rear section of the fastening cylinder 4. The front end of the push-pull screw cylinder 5 abuts against the rear end of the outer sleeve 1. Rotating the push-pull screw cylinder 5 can move the fastening cylinder 4 backward or forward. The external thread direction of the outer sleeve 1 is opposite to the thread direction at the threaded connection between the push-pull screw cylinder 5 and the fastening cylinder 4. After the tool is assembled, the opposite thread direction design can improve the anti-loosening performance of each part.

[0033] Both blade 6 and blade 7 have pointed tips and sharpened edges. When installing blade 6 or blade 7, the end of blade 6 or blade 7 is inserted into the inside of the strip-shaped notch 401. When the push-pull screw 5 pulls back the fastening cylinder 4, the inclined surfaces of multiple abutment portions 41 abut against the front end of the outer sleeve 1 and retract inward to clamp blade 6 or blade 7 installed along the length of the outer sleeve 1. Blade 6, when pulled back, can be clamped against the rear end of the limiting hole 301 through the locking portion 61. When the push-pull screw 5 pushes forward the fastening cylinder 4, the multiple abutment portions 41 release the clamping of blade 6 or blade 7, at which point blade 6 or blade 7 can be removed.

[0034] like Figure 7As shown, this tool can install blade 6 and blade 7, as well as blade 8 laterally. Blade 8 has a narrower end than its front end, a straight edge, and a sharpened front end. It can pass through and be engaged in the limiting hole 301 laterally without completely passing through it. When the push-pull screw 5 pulls back the fastening cylinder 4, multiple abutment parts 41 close and move backward, causing the outer sleeve 1 to be screwed forward on the limiting sleeve 3. The front end of the outer sleeve 1 presses against the inner wall of the front end of the limiting hole 301. When the outer sleeve 1 is screwed back, the front end of the outer sleeve 1 disengages from blade 8, at which point blade 8 can be removed. Alternatively, when clamping blade 8, the fastening cylinder 4 and the push-pull screw 5 can be removed beforehand, and the blade 8 can be tightened or loosened simply by screwing the outer sleeve 1 on the limiting sleeve 3.

[0035] like Figure 1 As shown, the outer sleeve 1 is threadedly connected to a positioning screw 2 that presses the limiting sleeve 3 forward. After the blade is tightened, the positioning screw 2 is rotated forward on the outer sleeve 1, pressing against the rear end of the limiting sleeve 3 and positioning the limiting sleeve 3 to prevent it from moving. Rubber pads are provided between the outer sleeve 1 and the positioning screw 2, as well as between the positioning screw 2 and the limiting sleeve, to further enhance the anti-loosening effect. The outer sleeve 1, the positioning screw 2, and the push-pull screw 5 all have anti-slip textures on their outer circumferences for easy rotation by the user.

[0036] like Figure 4 As shown, the blade 6 and the limiting sleeve 3 can be redesigned. The inner side of the limiting hole 301 has a groove 3011, which can be distributed at the end of the limiting hole 301 or form a complete ring. The distance between the outer ends of the two locking portions 61 at both ends of the blade 6 is greater than the inner diameter of the limiting sleeve 3 but less than the maximum distance between the two grooves 3011, meaning the two locking portions 61 are designed to be shorter. After the blade 6 is inserted into the limiting hole 301 and rotated to one end, it can be aligned with the groove 3011. When the blade 6 is subsequently pulled back by the fastening sleeve 4, the locking portions 61 can be pulled back and locked into the groove 3011, resulting in better limiting of the blade 6.

[0037] This embodiment allows for individual blade disassembly and replacement as needed, offering greater flexibility. When a blade is damaged, a new blade can be replaced without purchasing the entire tool, thus saving resources. For blades 6 and 7 installed along the length of the outer sleeve 1, the fastening sleeve 4 can be pulled back by rotating the push-pull screw 5. The fastening sleeve 4 clamps blade 6 or 7, which is held in place at the strip-shaped notch 401, and provides a more secure anti-dislodgement limit for blade 6, which has a locking mechanism 61. To remove blade 6 or 7, the push-pull screw 5 is rotated in the opposite direction to release the clamping sleeve 4, allowing for easy removal. For blade 8 installed laterally through the limiting hole 301, the fastening sleeve 4 is pushed forward by rotating the push-pull screw 5, pressing blade 8 against the inner wall of the limiting hole 301. To remove blade 8, the push-pull screw 5 is rotated in the opposite direction to easily remove blade 8.

[0038] Example 2

[0039] This embodiment proposes a tool with a detachable blade, such as Figure 8 and Figure 9 As shown, the difference between this embodiment and embodiment one lies in the different limiting sleeve structure. In this embodiment, limiting sleeve one 3 is replaced by limiting sleeve two 9. Limiting sleeve two 9 is a rectangular cylindrical structure, and the limiting holes two 901 are rectangular holes and are evenly distributed around the limiting sleeve in two, three or four shapes.

[0040] The inner circumference of the limiting sleeve 2 9 has four segmented internal threads evenly distributed around the center of the limiting sleeve 2 9. The four segmented internal threads are part of the complete internal thread and are adapted to the external thread of the outer sleeve 1. It can be threaded onto the outer sleeve 1, or it can be anti-loosening and limited by screwing the positioning screw 2 forward and pressing it against the rear end of the limiting sleeve 2 9.

[0041] like Figure 9 As shown, the segmented internal thread is located behind the second limiting hole 901, and the segmented internal thread does not need to be machined on the front side of the second limiting hole 901.

[0042] In this embodiment, the end of the blade 6 can extend diagonally into the limiting sleeve 9, and the two locking portions 61 on both sides of the end of the blade 6 will not interfere with the limiting sleeve 9. Then, the blade 6 is rotated so that the two locking portions 61 respectively engage with the inner sides of the two oppositely distributed limiting holes 901. Subsequently, the fastening cylinder 4 can be pulled back by rotating the push-pull screw 5. The fastening cylinder 4 clamps the blade 6 through the strip-shaped notch 401 and pulls it back to press the locking portions 61 against the inner wall of the rear side of the limiting hole 901. When removing the blade 6, the push-pull screw 5 is rotated in the opposite direction to release the clamping of the fastening cylinder 4 on the blade 6. Then, the blade 6 is rotated to the diagonal direction of the limiting sleeve 9, and the blade 6 can be removed.

[0043] This embodiment can also be used for the installation of blade 3 8. Blade 3 8 is passed through the two opposite limiting holes 2 901 laterally, and then the fastening cylinder 4 is pushed forward by the push-pull screw cylinder 5. The fastening cylinder 4 presses blade 3 8 against the inner wall of the limiting hole 2 901.

[0044] 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 tool with a detachable blade, characterized in that, include: The outer sleeve (1) is through on the inside and has external threads on the front part of the outer periphery; The limiting sleeve has a limiting hole at the front and is threaded to the external thread of the outer sleeve (1); The blade has its end located inside the limiting sleeve; The fastening cylinder (4) is inserted inside the outer sleeve (1), and has multiple abutment parts (41) at the front end. The front section has multiple strip-shaped notches (401) for the blade end to extend into, and the abutment parts (41) have bevels on their outer periphery. The push-pull screw (5) is threaded to the rear section of the fastening cylinder (4), and its front end abuts against the rear end of the outer sleeve (1). When the push-pull screw (5) pulls the fastening cylinder (4) back, the inclined surfaces of multiple abutting parts (41) abut against the front end of the outer sleeve (1) and retract inward to clamp the blade installed along the length direction of the outer sleeve (1). When the push-pull screw (5) pushes the fastening cylinder (4) forward, the front ends of multiple abutting parts (41) press the blade that passes through the limiting hole laterally against the inner wall of the front end of the limiting hole.

2. The tool with a detachable blade according to claim 1, characterized in that, The outer sleeve (1) is threadedly connected to a positioning screw (2) that presses the limiting sleeve forward.

3. The tool with a detachable blade according to claim 2, characterized in that, Rubber pads are provided between the outer sleeve (1) and the positioning screw (2) as well as between the positioning screw (2) and the limiting sleeve.

4. The tool with a detachable blade according to claim 1, characterized in that, The limiting sleeve is a cylindrical structure, the limiting hole is a T-shaped notch and two are evenly distributed around the limiting sleeve, and the blade installed along the length direction of the outer sleeve (1) has a clamping part (61) on both sides of the end width direction.

5. A tool with a detachable blade according to claim 4, characterized in that, The limiting hole has a slot (3011), and the distance between the outer ends of the two locking parts (61) at both ends of the blade is greater than the inner diameter of the limiting sleeve and less than the maximum distance between the two slots (3011).

6. A tool with a detachable blade according to claim 1, characterized in that, The limiting sleeve has a rectangular cylindrical structure, and the limiting holes are rectangular holes with two, three, or four holes evenly distributed around the limiting sleeve.

7. A tool with a detachable blade according to claim 6, characterized in that, The inner circumference of the limiting sleeve has four segmented internal threads evenly distributed around the center of the limiting sleeve, and the four segmented internal threads are part of the complete internal thread.

8. A tool with a detachable blade according to claim 7, characterized in that, The segmented internal thread is located behind the limiting hole.

9. A tool with a detachable blade according to claim 7, characterized in that, The inner side of the front end of the outer sleeve (1) has a guide slope that is adapted to the abutment part (41).

10. A tool with a detachable blade according to claim 1, characterized in that, The external thread direction of the outer sleeve (1) is opposite to the thread direction at the threaded connection of the push-pull screw sleeve (5) and the fastening sleeve (4).

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