Knife handle capable of fixing knife mounting length

Abstract

The cutter handle capable of fixing the cutter mounting length comprises a cutter handle body, a through hole is formed in the cutter handle body, and the through hole is divided into a through hole upper section and a through hole lower section; a locking nozzle and a locking nut are arranged in the lower section of the through hole; the locking mouth comprises a claw-shaped locking part with a large upper part and a small lower part, a claw of the claw-shaped locking part is arranged downwards, a limiting plane is arranged in the middle of the cutter handle body, and the limiting plane is perpendicular to the mounting axial direction of a locked cutter; the claw-shaped locking part is provided with a first conical locking face with the downward taper, the locking nut is provided with a second conical locking face matched with the conical locking face, and when the second conical locking face moves upwards in the axial direction, the first conical locking face moves in the radial direction, so that the locked cutter is locked. The tool locking device has the advantage that when the tool is locked, the locked tool cannot move up and down.

Description

Technical Field

[0001] The utility model relates to a tool for mounting a knife, in particular to a knife handle which can fix the length of the knife. Background Art

[0002] Existing tool holders for mounting tools, such as Figure 4 As shown, it includes a handle body 100, the upper part of the handle body 100 is in the shape of a truncated cone with a small upper part and a large lower part, the lower part of the handle body 100 is in the shape of a cylinder, an external thread is provided on the outer wall of the cylinder, a trumpet-shaped cavity 200 is provided inside the handle body 100 and axially penetrates the handle body 100 from top to bottom, a threaded pull nail 300 is provided on the top of the handle body 100, and a cylindrical part at the bottom of the handle body 100 is provided. A locking mouth 400 is provided in the body, and a locking nut 500 with a threaded connection is provided on the outer wall of the cylindrical body; the locking mouth 400 includes a claw-shaped locking portion 410 which is small at the top and large at the bottom, and a locking mouth root 420 located at the lower part of the claw-shaped locking portion 410, and the claw of the claw-shaped locking portion 410 is set upward; a chamfered ring surface 430 is provided at the lower end of the locking mouth root 420; an inner chamfered ring surface 510 is provided at the inner bottom of the locking nut 500, which cooperates with the chamfered ring surface 430.

[0003] During use, the tool 600 is first installed in the locking nozzle 400, and then the locking nozzle 400 is placed in the handle body 100. The locking nut 500 is then tightened. During the tightening process, the inner chamfered annular surface 510 in the locking nut 500 moves upward along with the chamfered annular surface 430 of the locking nozzle 400, thereby locking the tool 600. A problem with this structure of the handle is that when the tool is locked, the locking nozzle 400 and the tool 600 will move upward along with the locking nut 500, making it impossible to secure a long knife. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a tool handle with a fixed tool length, which can prevent the tool from moving up and down when the tool is locked.

[0005] The technical solution of the utility model is to provide a knife handle capable of fixing the length of the knife, comprising a knife handle body, wherein the upper portion of the knife handle body is in the shape of a truncated cone with a small upper portion and a large lower portion, a threaded pull nail is provided on the top of the knife handle body, a through hole is provided inside the knife handle body which penetrates the knife handle body axially from top to bottom, and the through hole is divided into an upper through hole section and a lower through hole section; a locking nozzle is provided in the lower through hole section, and a threaded locking nut is provided on the inner wall of the lower through hole section at the bottom of the locking nozzle; the locking nozzle comprises a claw-shaped locking nozzle with a large upper portion and a small lower portion. The tool holder is provided with a locking mechanism which is adapted to move the tool holder upwards and to lock the tool in a direction of rotation relative to the tool holder.

[0006] As an improvement to the present invention, a spring is provided below the pull nail in the lower section of the through hole.

[0007] As an improvement to the present invention, the lower portion of the handle body is cylindrical in shape.

[0008] As an improvement to the present invention, the knife handle is made of a steel alloy material.

[0009] As an improvement to the present invention, a groove is provided on the outer surface of the middle portion of the handle body.

[0010] As an improvement to the present invention, the rivet includes a connecting portion and a rivet groove located above the connecting portion. The connecting portion is provided with an external thread and is threadedly connected to the top of the shank body via the external thread.

[0011] As an improvement to the present invention, the upper pull ring of the pull nail is a chamfered pull ring.

[0012] The utility model adopts a method in which a through hole is provided in the interior of the knife handle body, which penetrates the knife handle body axially from top to bottom, and the through hole is divided into an upper through hole section and a lower through hole section; a locking nozzle is provided in the lower through hole section, and a locking nut connected by thread is provided on the inner wall of the lower through hole section at the lower part of the locking nozzle; the locking nozzle comprises a claw-shaped locking portion which is larger at the top and smaller at the bottom, and a locking nozzle root located at the upper part of the claw-shaped locking portion, the claw of the claw-shaped locking portion is arranged downward, and a limiting level for limiting the upward movement of the locking nozzle root is provided inside the middle part of the knife handle body. The locking nut has a second conical locking surface that matches the conical locking surface. When the second conical locking surface moves axially upward, the first conical locking surface moves radially, thereby locking the locked tool. The utility model has the advantage that when locking the locked tool, the claw-shaped locking part of the locking mouth only moves radially but does not move up and down, thereby having the advantage that the locked tool will not move up and down when locking the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic cross-sectional view of an embodiment of the utility model.

[0014] Figure 2 It is a schematic cross-sectional view of another embodiment of the present invention.

[0015] Figure 3 yes Figure 1 or Figure 2 A schematic diagram of the three-dimensional structure of the lock mouth in the embodiment shown.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of a knife handle in the prior art. DETAILED DESCRIPTION

[0017] See Figure 1 and Figure 3 , Figure 1 and Figure 3Disclosed is an embodiment of a knife handle capable of fixing the length of a knife, comprising a knife handle body 1, wherein the upper portion of the knife handle body 1 is in the shape of a truncated cone with a smaller upper portion and a larger lower portion, a threaded pull nail 3 is provided on the top of the knife handle body 1, a through hole 2 is provided inside the knife handle body 1 and passes through the knife handle body 1 axially from top to bottom, the diameter of the through hole upper section 21 located at the upper portion of the knife handle body 1 is substantially consistent with the diameter of the locked knife 4, preventing the locked knife 4 from swinging in the through hole 2, the diameter of the through hole lower section 22 located at the lower portion of the knife handle body 1 is larger than the diameter of the locked knife 4 (to facilitate the installation of a locking nozzle 5 and a locking nut 6); a locking nozzle 5 is provided in the through hole lower section 22, and a threaded locking nut 6 is provided on the inner wall of the through hole lower section 22 below the locking nozzle 5; the locking nozzle 5 It includes a claw-shaped locking portion 51 that is larger at the top and smaller at the bottom, and a locking mouth root portion 52 located at the upper part of the claw-shaped locking portion 51. The claw of the claw-shaped locking portion 51 is arranged downward, and a limiting plane 11 for limiting the upward movement of the locking mouth root portion 52 is provided inside the middle part of the handle body 1. The limiting plane 11 is perpendicular to the installation axis of the locked tool 4; the claw-shaped locking portion 51 has a first conical locking surface 511 that tapers downward, and the locking nut 6 has a second conical locking surface 61 that matches the conical locking surface 511. When the second conical locking surface 61 moves axially upward, the first conical locking surface 511 only moves radially but not up and down, thereby locking the locked tool 4 and preventing the locked tool 4 from moving up and down, thereby achieving the purpose of fixing the tool installation length.

[0018] Preferably, a spring 7 is provided below the pull nail 3 in the lower section 22 of the through hole. The purpose of providing the spring 7 is to more conveniently limit the top end of the locked tool 4.

[0019] Preferably, the lower portion 12 of the handle body 1 is cylindrical in shape to facilitate gripping with a CNC fixture.

[0020] Preferably, the knife handle is made of a steel alloy material, preferably a manganese steel alloy material.

[0021] Preferably, a groove 13 is provided on the outer surface of the middle portion of the handle body 1, and the groove 13 is convenient for being clamped on a support frame in the tool magazine.

[0022] Preferably, the rivet 3 includes a connecting portion 31 and a rivet groove 32 located above the connecting portion 31. The rivet groove 32 is used to tighten the tool handle when the spindle grabs the tool handle, so that the outer conical surface of the tool handle is tightly attached to the inner conical surface of the spindle; the connecting portion 31 is provided with an external thread, which is connected to the top thread of the tool handle body 1 through the external thread.

[0023] Preferably, the upper pull ring 33 of the pull nail 3 is a chamfered pull ring.

[0024] Preferably, the lock mouth 5 includes a claw-shaped locking portion 51 that is larger at the top and smaller at the bottom, and a lock mouth root portion 52 located above the claw-shaped locking portion 51, wherein the claw of the claw-shaped locking portion 51 is arranged downward (see Figure 3 ), the claw of the claw-shaped locking part 51 is formed by cutting a first slit 512 and a second slit 513, wherein the first slit 512 is formed by incomplete cutting of the root 52 of the lock mouth toward the claw-shaped locking part 51, and the second slit 513 is formed by incomplete cutting of the claw-shaped locking part 51 toward the root 52 of the lock mouth.

[0025] See Figure 2 , Figure 2 It is a schematic cross-sectional structural diagram of another embodiment of the present utility model. Figure 2 The embodiment shown and Figure 1 Compared with the embodiment shown in FIG, the general structure is the same, except that the pull nail 3 is integrated with the top of the handle body 1.

[0026] The operating principle of the utility model is as follows: first, the locked tool 4 is installed into the handle body 1, so that the spring 7 presses against one end of the locked tool 4, and then the reference surface of the blade of the locked tool 4 is limited by an auxiliary tool; then the locking nut 6 with an inclined inner cavity is tightened, and the locking nut 6 cooperates with the locking mouth 5 to clamp the locked tool 4. Since the locking mouth 5 is pressed against the limiting plane 11 inside the handle body 1, the locking nut 6 only causes the claws of the locking mouth 5 to move radially during the locking process, and does not cause the locking mouth 5 and the locked tool 4 to move up and down, so that the length of the knife after installation can be fixed.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A knife handle capable of fixing the length of a knife, comprising a knife handle body (1), wherein the upper portion of the knife handle body (1) is in the shape of a truncated cone with a smaller upper portion and a larger lower portion, and a rivet (3) is provided on the top of the knife handle body (1), characterized in that: A through hole (2) is provided inside the handle body (1) and passes through the handle body (1) axially from top to bottom, and the through hole (2) is divided into an upper through hole section (21) and a lower through hole section (22); a locking mouth (5) is provided in the lower through hole section (22), and a locking nut (6) connected by thread is provided on the inner wall of the lower through hole section (22) below the locking mouth (5); the locking mouth (5) includes a claw-shaped locking portion (51) that is larger at the top and smaller at the bottom, and a locking mouth root (52) located above the claw-shaped locking portion (51), the claw of the claw-shaped locking portion (51) is arranged downward, and the locking mouth (52) is provided at the bottom. A limiting plane (11) for limiting the upward movement of the root of the locking nozzle (52) is provided inside the middle of the tool handle body (1), and the limiting plane (11) is perpendicular to the installation axis of the locked tool (4); the claw-shaped locking portion (51) has a first conical locking surface (511) that tapers downward, and the locking nut (6) has a second conical locking surface (61) that matches the conical locking surface (511), and when the second conical locking surface (61) moves axially upward, the first conical locking surface (511) moves radially, thereby locking the locked tool (4).

2. The knife handle with fixed knife length according to claim 1, characterized in that: In the lower section (22) of the through hole, a spring (7) is provided below the pull nail (3).

3. The knife handle with fixed knife length according to claim 1 or 2, characterized in that: The lower portion (12) of the handle body (1) has a cylindrical outer shape.

4. The knife handle with fixed knife length according to claim 1 or 2, characterized in that: The knife handle is made of steel alloy material.

5. The knife handle with fixed knife length according to claim 1 or 2, characterized in that: A groove (13) is provided on the middle outer surface of the handle body (1).

6. The knife handle with fixed knife length according to claim 1 or 2, characterized in that: The rivet (3) comprises a connecting portion (31) and a rivet groove (32) located above the connecting portion (31); the connecting portion (31) is provided with an external thread and is threadedly connected to the top of the shank body (1) via the external thread.

7. The knife handle with fixed knife length according to claim 6, characterized in that: The upper pull ring (33) of the pull nail (3) is a chamfered pull ring.

8. The knife handle with fixed knife length according to claim 1 or 2, characterized in that: The pull nail (3) is connected to the top of the handle body (1) through a thread.

9. The knife handle with fixed knife length according to claim 1 or 2, characterized in that: The pull nail (3) is integrated with the top of the handle body (1).

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