A blade clamped detachable tool

Abstract

The utility model relates to handheld tool field, concretely is a detachable tool of blade clamping formula. It includes outer sleeve, fastening cylinder, screw cylinder, blade and sleeve tight cylinder, the outer sleeve front end has at least one set of relative distribution's hole group, and each hole group includes two limit holes, and the limit hole is in the form of notch, and the outer sleeve front end periphery has outer thread, fastening cylinder passes through the inside of outer sleeve, and the length direction has a plurality of strip notches around the central axis distribution, and the front end has a plurality of clamping head, and the rear portion is connected with screw cylinder thread, and a plurality of clamping head extrude into the inside of outer sleeve and shrink, and pull back the clamping blade at the limit hole, and the outer sleeve front end is braced tightly, sleeve tight cylinder is connected in the outer thread place thread, and is tightly sleeved in the limit hole periphery side. The utility model can replace the blade separately, when the blade is damaged, need not purchase the whole tool, is more economical, and can replace different blades according to the use need, is flexible in use, has more functions, can fix the blade firmly.

Description

Technical Field

[0001] This utility model relates to the field of hand tools, and in particular to a blade clamping detachable 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, it is not possible to replace the blades with different functions according to the needs of use, which has certain limitations. Utility Model Content

[0003] The purpose of this utility model is to address the problems existing in the background technology by proposing a blade clamping detachable tool that can disassemble and replace the blade separately. When the blade is damaged, there is no need to purchase the entire tool, which is more economical. Different blades can be replaced according to the needs of use, making it flexible in use and more functional.

[0004] The present invention provides a blade-clamping detachable tool, comprising an outer sleeve, a fastening sleeve, a screw sleeve, a blade, and a tightening sleeve. The front end of the outer sleeve has at least one set of relatively distributed holes, each set including two limiting holes, the limiting holes being notched, and the outer circumference of the front end of the outer sleeve having external threads. The fastening sleeve passes through the inner side of the outer sleeve and has multiple strip-shaped notches distributed around the central axis along its length. The front end has multiple clamping heads, and the rear end is threadedly connected to the screw sleeve. The multiple clamping heads are squeezed into the interior of the outer sleeve and retract, pulling back to clamp the blade at the limiting holes, thus tightening the front end of the outer sleeve. The tightening sleeve is threadedly connected to the external threads and is fitted onto the outer circumference of the limiting holes.

[0005] Preferably, the outer peripheral surface of the clamping head is a conical slope, and the cross-sectional size gradually increases from back to front.

[0006] Preferably, the sleeve has a radially penetrating insertion hole, which is offset from the limiting hole.

[0007] Preferably, the front end of the screw barrel has a conical head, and the outer peripheral surface of the conical head is a conical surface.

[0008] Preferably, the maximum diameter of the cone head is smaller than the diameter of the end of the outer sleeve, and the cone head extends into the inner side of the outer sleeve.

[0009] Preferably, the front part of the screw barrel has an end face that abuts against the end of the outer sleeve.

[0010] Preferably, the limiting hole is an "L" shaped hole or a "T" shaped hole, and the width of the rear part of the limiting hole is greater than the width of the front part.

[0011] Preferably, both the outer sleeve and the screw barrel have anti-slip textures on their outer circumference.

[0012] Compared with existing technologies, this utility model has the following beneficial technical effects: The blade can be disassembled and replaced individually; when a blade is damaged, there is no need to purchase the entire tool, thus saving money. Different blades can be replaced according to usage needs, making it flexible and more functional. When installing blade one, it is installed along the length of the tool and tightened using a sleeve, improving the secure installation of blade one. When installing blade two, it is installed from the side of the sleeve, and both blade one and blade two can be secured by a fastening sleeve. When removing the blade, the screw is rotated in the opposite direction to release the fastening sleeve from the blade, allowing for easy removal of the blade. The operation is very convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the structure when the sleeve is removed according to an embodiment of the present invention;

[0015] Figure 3 for Figure 1 Exploded view of the structure;

[0016] Figure 4 This is a schematic diagram of the fastening cylinder.

[0017] Figure 5 A structural diagram of an outer sleeve;

[0018] Figure 6 This is a diagram of another structural form of the outer sleeve;

[0019] Figure 7 This is a schematic diagram of the sleeve structure;

[0020] Figure 8 This is a schematic diagram of the structure when the second blade is clamped in an embodiment of the present invention.

[0021] Reference numerals: 1. Outer sleeve; 100. External thread; 101. Limiting hole; 2. Fastening sleeve; 21. Clamping head; 201. Strip notch; 3. Screw barrel; 31. Conical head; 4. Blade one; 41. Boss part; 5. Tightening sleeve; 501. Insertion hole; 6. Blade two. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-6 As shown in the figure, the blade clamping detachable tool proposed in this embodiment includes an outer sleeve 1, a fastening sleeve 2, a screw sleeve 3, a blade 4, and a clamping sleeve 5.

[0024] The outer sleeve 1 has at least one set of relatively distributed holes at its front end, each set including two limiting holes 101. If one set of holes is provided, there are two limiting holes 101; if two sets of holes are provided, there are four limiting holes 101. The blade 4 has a bayonet at the front and a cleaver and a sickle on the sides, both with cutting edges. The blade 4 is a multi-functional structure, allowing the user to switch the tool's functions according to their needs. The limiting holes 101 are notched, facilitating the insertion of the protrusions 41 on both sides of the blade 4's end through the notch. The limiting holes 101 are either "L"-shaped or "T"-shaped, with the rear width of the limiting hole 101 being greater than the front width. After inserting the end of the blade 4 into the limiting hole 101, rotating the blade 4 allows the protrusions 41 to rotate to a position offset from the notch at the front of the limiting hole 101, where they are blocked inside the limiting hole 101. The outer circumference of the outer sleeve 1 is provided with anti-slip texture for easy operation.

[0025] like Figures 1-3 As shown, the end of the blade 4 is pressed against the inside of the limiting hole 101, and is fastened by pulling the fastening cylinder 2 backward.

[0026] like Figure 3 As shown, the front end of the screw barrel 3 has a conical head 31, the outer circumferential surface of which is conical. The maximum diameter of the conical head 31 is smaller than the diameter of the end of the outer sleeve 1, facilitating the insertion of the conical head 31 into the inner side of the outer sleeve 1. The front part of the screw barrel 3 has an end face that abuts against the end of the outer sleeve 1, ensuring that the outer sleeve 1 and the screw barrel 3 maintain structural integrity and are not easily loosened. The outer circumference of the screw barrel 3 is provided with anti-slip textures for easy rotation.

[0027] The fastening cylinder 2 passes through the inner side of the outer sleeve 1. The fastening cylinder 2 has multiple strip-shaped notches 201 distributed around its central axis along its length, with an even number of notches 201. The front end of the fastening cylinder 2 has multiple clamping heads 21, which are separated by the strip-shaped notches 201. Due to the presence of the strip-shaped notches 201, the clamping heads 21 can retract inward when compressed. The end of the blade 4 is pre-inserted into the inner side of the strip-shaped notches 201. The rear part of the fastening cylinder 2 is threadedly connected to the screw cylinder 3. By rotating the screw cylinder 3, the fastening cylinder 2 can be pulled backward, causing the multiple clamping heads 21 to be squeezed into the inner side of the outer sleeve 1 and retract, thereby clamping the blade 4. The clamping heads 21 also push the front end of the outer sleeve 1 outward. By continuing to rotate the screw cylinder 3, the clamped blade 4 can be pulled backward by the fastening cylinder 2. The outer circumferential surface of the clamping head 21 is a conical slope, and the cross-sectional size gradually increases from back to front. The outer diameter of the front end of the clamping head 21 is larger than the inner diameter of the outer sleeve 1, and the outer diameter of the rear end is smaller than the inner diameter of the outer sleeve 1. This allows the outer circumferential surface of the clamping head 21 to contact the inner circumferential surface of the front end of the outer sleeve 1, and the multiple clamping heads 21 can be contracted under the compression of the outer sleeve 1. When the screw cylinder 3 rotates in the opposite direction to push the fastening cylinder 2 forward, the clamping head 21 gradually returns to its original position and unfolds, releasing the clamp on the blade 4. At this time, the blade 4 can be removed, making the operation very convenient.

[0028] The outer sleeve 1 has an external thread 100 on its front end outer circumference, but no thread at the limiting hole 101. The external thread 100 is offset from the anti-slip texture on the rear outer circumference of the outer sleeve 1. The clamping sleeve 5 has an internal thread that matches the external thread 100, and the clamping sleeve 5 is threadedly connected to the external thread 100 of the outer sleeve 1. The clamping sleeve 5 is fitted onto the outer circumference of the limiting hole 101. When the clamping head 21 of the fastening sleeve 2 is squeezed inward by the front end of the outer sleeve 1, the reaction force also causes the front end of the outer sleeve 1 to be stretched outward. By pre-threading the clamping sleeve 5 onto the outer sleeve 1, excessive stretching of the front end of the outer sleeve 1 can be limited, and the clamping head 21, the outer sleeve 1, and the clamping sleeve 5 can maintain a firm fastening relationship, allowing the blade 4 to be clamped more securely.

[0029] This embodiment allows for the separate disassembly and replacement of blade 4, eliminating the need to purchase the entire tool when blade 4 is damaged, thus saving resources. When installing blade 4, the end of blade 4 is inserted into the strip-shaped notch 201 on the fastening cylinder 2. Rotating the fastening cylinder 2 and blade 4 causes the protrusions 41 on both sides of blade 4 to rotate to the depth of the limiting hole 101. Then, by rotating the screw cylinder 3, the fastening cylinder 2 is pulled back, causing the clamping head 21 to be squeezed inward by the front end of the outer sleeve 1. The clamping head 21 retracts and clamps blade 4, pulling blade 4 back and pressing it against the inner side of the limiting hole 101, thus securing blade 4. The tightening sleeve 5 is fitted onto the external thread 100 at the front end of the outer sleeve 1, tightening the front end of the outer sleeve 1 at the limiting hole 101, making blade 4 less likely to loosen. When disassembling the blade 4, rotate the screw cylinder 3 in the opposite direction, push the fastening cylinder 2 forward, and gradually loosen the clamping head 21 to release the blade 4. Rotate the blade 4 and the fastening cylinder 2, align the blade 4 with the front notch of the limiting hole 101, and then remove the blade 4. The operation is very convenient.

[0030] Example 2

[0031] like Figures 1-8 As shown, this embodiment proposes a blade-clamping detachable tool. Compared to Embodiment 1, in this embodiment, the clamping sleeve 5 has a radially penetrating insertion hole 501. The insertion hole 501 and the limiting hole 101 are offset, allowing the blade 6 to be inserted from the side. The width of the outer end of the blade 6 is greater than the width of the end near the insertion hole 501, ensuring that it will not continue to move after passing through the insertion hole 501; that is, the blade 6 itself will block one side of the insertion hole 501. By rotating the screw cylinder 3, the fastening sleeve 2 is pressed against the rear side of the blade 6, thus pressing the blade 6 against the insertion hole 501. The outer end of the blade 6 is sharpened.

[0032] In this embodiment, a tightening sleeve 5 is added to improve the fastening effect on the first blade 4 and to allow the second blade 6 to be installed from the side, meeting different usage needs, making it more flexible and functional. In addition, other blades with similar protrusions 41 on both sides of the end of the first blade 4 can also be used, or blades that can be inserted into the insertion hole 501 from the side and tightened by the fastening sleeve 2 can be installed.

[0033] 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 blade-clamping detachable 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 limiting holes (101) being notched, and the outer periphery of the front end of the outer sleeve (1) having external threads (100). blade; Screw barrel (3); The fastening cylinder (2) passes through the inner side of the outer sleeve (1) and has multiple strip-shaped notches (201) distributed around the central axis along the length direction. It has multiple clamping heads (21) at the front end and is threaded to the screw cylinder (3) at the rear. The multiple clamping heads (21) are squeezed into the inner side of the outer sleeve (1) and retract. At the limiting hole (101), the clamping blade is pulled back to tighten the front end of the outer sleeve (1). The sleeve (5) is threaded to the external thread (100) and is fitted onto the outer circumference of the limiting hole (101).

2. The blade clamping detachable tool according to claim 1, characterized in that, The outer circumference of the clamping head (21) is a conical slope, and the cross-sectional size gradually increases from back to front.

3. The blade clamping detachable tool according to claim 1, characterized in that, The sleeve (5) has a through hole (501) that runs radially through it, and the through hole (501) and the limiting hole (101) are misaligned.

4. A blade clamping detachable tool according to claim 1, characterized in that, The front end of the screw barrel (3) has a conical head (31), and the outer circumferential surface of the conical head (31) is a conical surface.

5. A blade clamping detachable tool according to claim 4, characterized in that, The maximum diameter of the cone head (31) is smaller than the end diameter of the outer sleeve (1), and the cone head (31) extends into the inner side of the outer sleeve (1).

6. A blade clamping detachable tool according to claim 5, characterized in that, The front part of the screw (3) has an end face that abuts against the end of the outer sleeve (1).

7. A blade-clamping detachable tool according to claim 1, characterized in that, The limiting hole (101) is an "L" shaped hole or a "T" shaped hole, and the width of the rear part of the limiting hole (101) is greater than the width of the front part.

8. A blade clamping detachable tool according to claim 1, characterized in that, Both the outer sleeve (1) and the screw barrel (3) are provided with anti-slip textures on their outer periphery.

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