Quick connecting structure

Abstract

The utility model provides a quick connecting structure, which relates to the technical field of cutter connection, and comprises a cutter body and a cutter handle, the cutter body comprises a cutting end and a connecting end, the connecting end of the cutter body is provided with at least two groups of inner bulges along the circumferential direction, the excircle surface of the cutter handle is provided with two positioning grooves and two planes, and the positioning grooves extend along the excircle of the cutter handle. The two ends of the plane extend to the end face of the cutter handle and the positioning groove correspondingly, and the cutter body and the cutter handle are connected after the inward protrusion enters the positioning groove. A positioning groove is formed in the outer surface of the cutter handle and matched with the cylindrical inner protrusions on the two sides of the cutter body, the cutter handle axially enters the cutter body and rotates, and torque can be transmitted to limit axial movement after the cylindrical inner protrusions are arranged in the positioning groove, so that convenient installation of the cutter handle and the cutter body is achieved, needed accessories are reduced, and the assembling and installing time is short. Cutter replacement is faster and more convenient, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of tool connection, in particular to a quick connection structure. Background Art

[0002] In the conventional prior art, threaded connection and hexagonal transmission are used, which are relatively high in processing cost and time required for tool replacement. The design of the tool handle is relatively complex and uses many accessories, resulting in cumbersome and inefficient assembly, and it is difficult to further reduce costs. In view of the above-mentioned defects, the present application is proposed. Utility Model Content

[0003] The utility model aims to provide a quick connection structure, which has the advantages of simple structure, reduced required accessories and high assembly efficiency, and solves the problem of complicated and low efficiency assembly of the existing tool handle connection structure.

[0004] In order to solve the above problems, the utility model provides a quick connection structure, including a knife body and a knife handle, the knife body includes a cutting end and a connecting end, at least two groups of inner protrusions are arranged at the connecting end of the knife body along the circumferential direction, two positioning grooves and two planes are arranged on the outer circular surface of the knife handle, the positioning groove extends along the outer circle of the knife handle, and the two ends of the plane extend to the end face and the positioning groove of the knife handle respectively, and the inner protrusion enters the positioning groove to realize the connection between the knife body and the knife handle.

[0005] According to an embodiment of the utility model, a cutting edge is circumferentially arranged at the cutting end of the tool body.

[0006] According to an embodiment of the utility model, a sealing ring groove is provided on the knife handle, and a sealing ring is provided in the sealing ring groove.

[0007] According to an embodiment of the utility model, a center drill mounting hole is provided on the tool handle.

[0008] According to an embodiment of the utility model, the tool handle is provided with a threaded inner hole connected to the center drill mounting hole.

[0009] According to an embodiment of the utility model, the threaded inner hole is arranged at the plane position.

[0010] According to an embodiment of the utility model, a device connecting portion is provided on the knife handle.

[0011] According to an embodiment of the present invention, the device connecting portion is a triangular handle.

[0012] According to an embodiment of the utility model, the cross-sections of the inner protrusion and the positioning groove are both arc-shaped.

[0013] The beneficial effect of the utility model is that the outer surface of the knife handle is provided with a positioning groove, which matches the cylindrical inner convexities on both sides of the knife body. The knife handle enters the knife body axially and rotates, and after the cylindrical inner convexity is placed in the positioning groove, the torque can be transferred to limit the axial movement, thereby realizing convenient installation of the knife handle and the knife body, reducing the required accessories, reducing the assembly and installation time, and replacing the tool is faster, more convenient and low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a partial structural main sectional view of the quick connection structure;

[0016] Figure 2 It is a partial structural top sectional view of the quick connection structure;

[0017] Figure 3 It is a schematic diagram of the knife body structure;

[0018] Figure 4 is a schematic diagram of the handle structure;

[0019] Figure 5 This is the front view of the handle. DETAILED DESCRIPTION

[0020] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.

[0021] A quick connection structure, such as Figure 1 , comprising a knife body 1 and a knife handle 2.

[0022] like Figure 3 The tool body 1 includes a cutting end and a connecting end. A cutting edge 8 is arranged at the cutting end along the circumferential direction. An end tooth groove 9 can be arranged at the cutting end to form and remove iron chips. This tool can generally be used in thin plate hole processing. The cutting end can be set according to the function of the tool and is not limited to the structure described in this embodiment. At least two groups of inner protrusions 12 are arranged at the connecting end of the tool body 1 along the circumferential direction. The inner protrusions 12 are arranged in the inner wall of the connecting end of the tool body 1.

[0023] like Figure 3 , Figure 4Two positioning grooves 10 and two planes 7 are arranged on the outer circumferential surface of the handle 2. The positioning groove 10 extends as a long groove along the outer circumference of the handle 2. The two ends of the plane 7 extend to the end face of the handle 2 and the positioning groove 10 respectively. After the inner protrusion 12 enters the positioning groove 10, the connection between the tool body 1 and the handle 2 is realized.

[0024] Preferably, the cross-sections of the inner convexity 12 and the positioning groove are both arc-shaped, that is, the inner convexity 12 is an arc-shaped protrusion, and the positioning groove 10 is an arc-shaped groove, which is convenient for smooth installation.

[0025] Furthermore, a sealing ring groove 4 is provided on the knife handle 2, and a sealing ring 3 is provided in the sealing ring groove 4. The sealing ring groove 4 is not limited to be provided with one, and multiple groups of sealing ring grooves 4 can be provided.

[0026] Further, the handle 2 is provided with a center drill mounting hole 6. The handle 2 is provided with a threaded inner hole 5 connected to the center drill mounting hole 6. The threaded inner hole 5 is arranged at the position of the plane 7, and a fixing bolt is screwed into the threaded inner hole 5 to fix the center drill.

[0027] The tool handle 2 is provided with an equipment connection portion 11. The equipment connection portion 11 is a triangular handle, and the triangular handle at the other end of the tool handle 2 can be connected to equipment for use, such as a pistol drill chuck. The triangular handle can also be other various handle types and can be used for connection with other mechanical equipment.

[0028] The outer surface of the tool handle 2 is provided with a positioning groove 10, which matches the cylindrical inner protrusions 12 on both sides of the tool body 1. The tool handle 2 axially enters the tool body 1 and rotates 90 degrees. After the cylindrical inner protrusion 12 is placed in the positioning groove 10, the torque can be transferred to limit the axial movement. The flat surfaces 7 on both sides of the head of the tool handle 2 prevent interference with the cylindrical inner protrusion 12 when entering the tool body, and a sealing ring groove 4 is also provided in the radial direction of the tool handle 2 for installing and placing the sealing ring 3. Through the deformable nature of the sealing ring 3, it is squeezed and deformed into the tool body, so that a tight connection is formed between the tool handle and the tool body. Because the squeezed and deformed sealing ring rebounds and tightly interferes with the inner wall of the tool body, an axial connection is achieved. Through the deformability of the sealing ring and its friction, it is tightly interfered with the tool body 1 to achieve an axial connection, limit axial movement and reverse impact when stopping; through the action of friction, the reversal that may occur under reverse impact when the tool stops is limited.

[0029] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed and modified in any way.

Claims

1. A quick connection structure, characterized in that: The invention comprises a knife body (1) and a knife handle (2), wherein the knife body (1) comprises a cutting end and a connecting end, at least two groups of inner protrusions (12) are arranged at the connecting end of the knife body (1) along the circumferential direction, two positioning grooves (10) and two planes (7) are arranged on the outer circumference of the knife handle (2), the positioning grooves (10) extend along the outer circumference of the knife handle (2), the two ends of the plane (7) extend to the end face of the knife handle (2) and the positioning grooves (10) respectively, and the connection between the knife body (1) and the knife handle (2) is realized after the inner protrusions (12) enter the positioning grooves (10).

2. The quick connection structure according to claim 1, characterized in that: A cutting edge (8) is provided at the cutting end of the knife body (1) along the circumferential direction.

3. The quick connection structure according to claim 2, characterized in that: The knife handle (2) is provided with a sealing ring groove (4), and a sealing ring (3) is provided in the sealing ring groove (4).

4. The quick connection structure according to any one of claims 1 to 3, characterized in that: The knife handle (2) is provided with a center drill mounting hole (6).

5. The quick connection structure according to claim 4, characterized in that: The tool handle (2) is provided with a threaded inner hole (5) connected to the center drill mounting hole (6).

6. The quick connection structure according to claim 5, characterized in that: The threaded inner hole (5) is arranged at the position of the plane (7).

7. The quick connection structure according to claim 6, characterized in that: The knife handle (2) is provided with a device connecting portion (11).

8. The quick connection structure according to claim 7, characterized in that: The equipment connecting portion (11) is a triangular handle.

9. The quick connection structure according to claim 8, characterized in that: The cross sections of the inner convexity (12) and the positioning groove are both arc-shaped.

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