A multi-functional hand tool

Abstract

The utility model discloses a multifunctional hand tool. The utility model discloses a fixed clamping axle, knife handle, tension cover and blade, and the top of fixed clamping axle is equipped with the slot, and the slot has the tooth, and the lower fixed rod is equipped with, and the inner hole is equipped with in the rod, and the inner thread has in the hole, and the upper part of knife handle is equipped with the boss, and the boss is equipped with the screw rod, and the hole of rod is matched, and the outer thread of screw rod has the hole adaptation, and the bottom of tension cover is equipped with the recess of boss adaptation. The slot is cross-shaped, and the blade can be inserted in the positive direction or the reverse direction, the knife handle is cylindrical, and the blade includes two types of round mouth and square mouth. When using, the clamping and fixing of the blade are realized through the cooperation of various components, and the operation of replacing the blade is convenient. The tooth structure can improve the installation stability of the blade, the cooperation design of the knife handle and the tension cover makes the installation more suitable, and the tool such as drill, milling cutter and screwdriver can also be adapted, the use scene is effectively expanded, the diversified operation demand is satisfied, and the overall volume is small.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically to a multifunctional handheld tool designed to solve the problem that existing patents do not have toothed edges on the blade clamp, making them prone to falling off after installation. Background Technology

[0002] In the cutting tool market, traditional replaceable insert cutting tools have significant mechanical structural defects. Existing technologies generally use smooth grooves to fix the inserts, relying solely on mechanical pressure for clamping. This design is prone to insert displacement or even detachment under cutting force, posing operational safety hazards.

[0003] Most products use a straight-tube mating structure for the tool holder and tensioning sleeve, lacking a progressive locking mechanism during rotation and advancement. This prevents users from accurately adjusting the clamping force according to the characteristics of the material being processed. A more prominent problem is that the existing tool holder's retaining groove lacks an anti-slip structure, meaning the stability of the insert after installation depends entirely on the thread tightening force, making it prone to loosening under prolonged high-frequency vibration.

[0004] These structural defects force operators to frequently interrupt machining operations to manually correct the blade position, severely limiting production efficiency and increasing the risk of quality fluctuations in precision machining. Summary of the Invention

[0005] The purpose of this invention is to provide a multifunctional handheld tool.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A multifunctional handheld tool includes a fixed clamping shaft, a handle, a tensioning sleeve, and a blade. The fixed clamping shaft has a slot at its top end with teeth on it. A vertical rod is fixed to the lower end of the fixed clamping shaft, and a hole with internal threads is formed inside the vertical rod. The handle has a boss at its upper part, and a screw is located on the upper part of the boss. The screw matches the hole inside the vertical rod, and the screw also has external threads that fit the hole. The tensioning sleeve has a groove at its bottom that matches the boss.

[0007] Specifically, the slot is a cross-shaped slot.

[0008] Specifically, the handle is a cylindrical handle.

[0009] Specifically, the blade is a round-mouth blade or a square-mouth blade. Beneficial effects

[0010] This utility model is compatible with various blades, offering convenient blade replacement and a compact overall size. Its toothed structure enhances the stability of the blade after installation, effectively ensuring safe use. The tapered fit between the handle and the tensioning sleeve ensures a more snug and optimal blade installation. Furthermore, this tool structure is also compatible with drill bits, milling cutters, screwdrivers, and other tools, further expanding its application scenarios and providing convenience for diverse operational needs.

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 3 This is a front view of the fixed clamping shaft structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed clamp shaft of this utility model; Figure 5 This is a perspective view of the fixed clamping shaft structure of this utility model; Figure 6 This is a front view of the tension sleeve structure of this utility model; Figure 7 This utility model is a tensioning sleeve. Figure 6 Schematic diagram of the cross-sectional structure of the middle BB section; Figure 8 This is a perspective view of the tensioning sleeve structure of this utility model; Figure 9 This is a schematic diagram of the circular blade structure of this utility model; Figure 10 This is a schematic diagram of the square-mouth blade structure of this utility model; Figure 11 This is a schematic diagram of the structure of the present invention in use; In the diagram: 1-Fixed clamping shaft; 101-Slot; 102-Upright rod; 103-Toothed teeth; 104-Hole; 2-Tool holder; 201-Boss; 202-Screw; 3-Tightening sleeve; 301-Groove; 4-Blade; Detailed Implementation

[0013] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0017] like Figures 1-10As shown, a multifunctional handheld tool includes a fixed clamping shaft 1, a handle 2, a tensioning sleeve 3, and a blade. The fixed clamping shaft 1 has a slot 101 at its top for inserting the blade 4. The slot 101 has teeth 103 for more securely fixing the blade 4. A vertical rod 102 is fixed to the lower end of the fixed clamping shaft 1. A hole 104 is formed inside the vertical rod 102, and an internal thread is provided inside the hole 104. The handle 2 has a boss 201 on its upper part, and a screw 202 on the upper part of the boss 201. The screw 202 is connected to the vertical rod 102. The hole 104 inside the rod 102 is matched, and the screw 202 is also provided with an external thread that matches the hole 104; the bottom of the tension sleeve 3 is provided with a groove 301 that matches the boss 201. The boss 201 and the groove 301 cooperate to make the knife handle and the tension sleeve fit together better; the upper end of the tension sleeve 3 is convex outward, which fits the shape of the upper end of the fixed clamping shaft 1, but the size is smaller than the size of the upper end of the fixed clamping shaft 1. It can play the role of fastening the fixed clamping shaft 1 during use, so as to achieve the technical effect of fixing the blade 4.

[0018] Specifically, slot 101 is a cross-shaped slot, which allows the blade 4 to be inserted in either the forward or reverse direction, enabling it to be inserted into slot 101 in multiple directions.

[0019] Specifically, the handle 2 is a cylindrical handle, and different handles 2 can be used according to different habits, thus improving the user experience.

[0020] Specifically, blade 4 is either a round blade or a square blade. With multiple different blades, it can be switched and used in different environments, thus expanding the application scenarios of this utility model.

[0021] When using First, put the tension sleeve 3 onto the fixed clamping shaft 1. Then, screw the screw 202 on the top of the tool handle 2 into the hole 104 in the upright 102 at the tail of the fixed clamping shaft 1. Next, install the blade 4 by placing it into the slot 101 at the top of the fixed clamping shaft 1, allowing the teeth 103 to rub against it. Hold the tool handle 2 with one hand and pinch the blade 4 with the other hand to rotate it. While rotating the blade 4, the fixed clamping shaft 1 will rotate. The upright 102 and the internal hole 104 on the fixed clamping shaft 1 will screw inward along the screw 202. At the same time, the tension sleeve 3 clamps the fixed clamping shaft 1 upward, causing the slot 101 to tighten inward until the blade 4 is clamped. When it can no longer be turned, it means that the blade 4 is installed in place.

[0022] To replace the blade, hold the handle 2 with one hand and the blade 4 with the other, rotate the blade 4 in the opposite direction, and then drive the fixed clamping shaft 1 to rotate in the opposite direction. The upright rod 102 on the fixed clamping shaft 1 gradually moves away from the screw 202. At this time, the tensioning sleeve 3 moves downward and gradually loosens the clamping force on the fixed clamping shaft 1, and the slot 101 gradually relaxes, so that the blade 4 can be released, and the blade can be easily replaced.

[0023] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0024] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multifunctional handheld tool, characterized in that, The device includes a fixed clamping shaft (1), a knife handle (2), a tensioning sleeve (3), and a blade. The fixed clamping shaft (1) has a slot (101) at its top end, and the slot (101) has teeth (103). The fixed clamping shaft (1) has a vertical rod (102) fixed at its lower end, and the vertical rod (102) has a hole (104) inside, and the hole (104) has an internal thread. The knife handle (2) has a boss (201) at its upper part, and a screw (202) is provided on the upper part of the boss (201). The screw (202) matches the hole (104) inside the vertical rod (102), and the screw (202) also has an external thread that matches the hole (104). The tensioning sleeve (3) has a groove (301) at its bottom that matches the boss (201).

2. A multifunctional handheld tool as described in claim 1, characterized in that, The slot (101) is a cross-shaped slot.

3. A multifunctional handheld tool as described in claim 1, characterized in that, The handle (2) is a cylindrical handle.

4. A multifunctional handheld tool as described in claim 1, characterized in that, The blade (4) is a round blade and a square blade.

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