Drill chuck locking handle

Abstract

The utility model belongs to the field of drill chuck installation in machining, and particularly relates to a drill chuck locking handle. A hand-tight type chuck is easy to operate and high in efficiency, however, when the cutting torque is large, the chuck is loosened, the machining process is interrupted, and even parts are scrapped. And the wrench type drill chuck is complicated to operate. The utility model provides a drill chuck locking handle which comprises a limiting stopper, a handle, a nut and a rotating shaft, the limiting stopper is of an annular structure, a radial long round hole is formed in the side face of the annular structure, and first round through holes penetrating through the long round hole are further formed in the upper end face and the lower end face of the annular structure; the inner side of the handle is of a flat structure, the inner molded surface of the flat structure forms a cam structure, and the flat structure is rotationally fixed in the oblong hole through a rotating shaft. Compared with a wrench type drill chuck, operation is easy, and compared with a hand tightening type drill chuck, clamping is reliable.

Description

Technical Field

[0001] This utility model belongs to the field of drill chuck installation in machining, and specifically relates to a drill chuck locking handle. Background Technology

[0002] Drill chucks are one of the main accessories in the power tool and machine tool industries, and are widely used in bench drills, vertical drills, electric drills, and other equipment. Structurally, drill chucks are mainly divided into two categories: wrench type and hand-tightening type.

[0003] Wrench-type drill chucks require a wrench wheel to tighten. Hand-tightening drill chucks are tightened by gripping the front and rear sleeves. Hand-tightening chucks are simple to operate and efficient, but when the cutting torque is large, the chuck may loosen, leading to interruption of machining or even scrapping of the part. Wrench-type drill chucks are cumbersome to operate. Utility Model Content

[0004] To address the issue of insufficient locking force in the aforementioned hand-tightened drill chuck, this invention proposes a drill chuck locking handle that is easy to operate.

[0005] This utility model proposes a drill chuck locking handle, which includes a limiter, a handle, a nut, and a rotating shaft. The limiter is an annular structure with a radial elongated hole on the side of the annular structure and a first through hole passing through the elongated hole on the upper and lower end faces of the annular structure. The inner side of the handle is a flat structure, and the inner surface of the flat structure forms a cam structure. The flat structure is rotatably fixed in the elongated hole by the rotating shaft.

[0006] Advantageously, the outer circle of the limiter is knurled.

[0007] Advantageously, the outer side of the handle is a hand-held portion, and its surface is provided with knurling.

[0008] Advantageously, the outer side of the handle has a cylindrical structure.

[0009] Advantageously, the connecting area of ​​the handle has a second through hole perpendicular to the flat structure, and the pivot passes through the first and second through holes.

[0010] Advantageously, the shaft passes through the first and second through holes, and its end has a threaded structure, which is then fixed after being connected to a nut.

[0011] Beneficial effects: The drill chuck locking handle of this utility model is simpler to operate than the wrench-type drill chuck and more reliable in clamping than the hand-tightening drill chuck.

[0012] The features, functionalities, and advantages already discussed can be implemented independently in various examples, or combined in other examples. Further details of the examples can be seen in the following description and accompanying figures. Attached Figure Description

[0013] When read in conjunction with the accompanying drawings, the embodiments, preferred modes of use, other objects, and descriptions thereof will be best understood by referring to the following detailed description of the embodiments of the present invention, wherein:

[0014] Figure 1 This is a top view of the locking handle of this utility model;

[0015] Figure 2 This is a front view of the locking handle of this utility model;

[0016] Figure 3 This is a bottom cross-sectional view of the locking handle of this utility model;

[0017] Figure 4 This is an isometric view of the working state of the utility model.

[0018] 1-Limiter, 2-Handle, 3-Nut, 4-Shaft Detailed Implementation

[0019] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described, and these examples should not be construed as limited to those set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0020] See Figure 1 The drill chuck locking handle assembly includes: a limiter 1, a handle 2, a nut 3, and a rotating shaft 4. The limiter 1 is a ring structure with knurled outer circumference, and a radial elongated hole is provided through its outer circumference. At the center position of the elongated hole in the vertical direction, a first through hole is provided, penetrating the upper and lower end faces of the limiter 1.

[0021] The handle 2 has a rod-like overall shape, with a flat inner surface forming a cam structure. A second through-hole is located in the orthogonal direction of the flat surface. The outer surface of the handle 2 is cylindrical with knurled patterns to increase friction during operation. The flat structure of the handle 2 passes through the first elongated hole of the limiter 1. The rotating shaft 4 passes from bottom to top through the lower part of the first through-hole of the limiter 1 and the second through-hole of the handle 2, and then through the upper part of the first through-hole of the limiter 1. The upper end of the rotating shaft 4 has a threaded structure, and the lower end has a nut structure with a boss. After passing through, the rotating shaft 4 is secured with a nut 3.

[0022] The handle 2 can rotate around the pivot 4 within the elongated hole of the limiter 1, and the drill chuck is locked by the cam structure inside the locking handle 2, thus achieving the tightening and loosening of the drill chuck.

[0023] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may be described as having different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical applications of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. A drill chuck locking handle, characterized in that: The locking handle includes a limiter (1), a handle (2), a nut (3), and a rotating shaft (4). The limiter (1) is an annular structure with a radial elongated hole on the side of the annular structure and a first through hole passing through the elongated hole on the upper and lower end faces of the annular structure. The handle (2) has a flat structure on its inner side, and the inner surface of the flat structure forms a cam structure. The flat structure is rotatably fixed in the elongated hole by the rotating shaft (4).

2. The drill chuck locking handle according to claim 1, characterized in that: The outer circle of the limiter (1) is knurled.

3. The drill chuck locking handle according to claim 1, characterized in that: The outer side of the handle (2) is the hand-held part, and the surface is provided with knurling.

4. The drill chuck locking handle according to claim 3, characterized in that: The outer side of the handle (2) is a cylindrical structure.

5. The drill chuck locking handle according to claim 4, characterized in that: The connecting area of ​​the handle (2) has a second through hole, which is perpendicular to the flat structure. The rotating shaft (4) passes through the first through hole and the second through hole.

6. The drill chuck locking handle according to claim 5, characterized in that: The rotating shaft (4) passes through the first and second through holes, and its end is threaded. It is then fixed after being connected to the nut (3).

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