CN212652711U

CN212652711U - Safe, light and fast assembling and disassembling drill chuck

Info

Publication number: CN212652711U
Application number: CN202021359019.2U
Authority: CN
Inventors: 赵强; 王乾
Original assignee: Zhejiang Chaoli Mechanical Tools Co ltd
Current assignee: Zhejiang Chaoli Mechanical Tools Co ltd
Priority date: 2020-07-11
Filing date: 2020-07-11
Publication date: 2021-03-05
Anticipated expiration: 2030-07-11

Abstract

The utility model discloses a swift drill chuck of safe light loading and unloading belongs to drill chuck technical field, has solved assembly and operational reliability problem, and its technical scheme main points are that the rear end circumference of boring the body is provided with a plurality of mounting holes, embedding ball in the mounting hole, the rear portion at the front cover is spacing and cup joint through the back jump ring of assembly on boring the body to the back cover, and the inside of rear cover still is provided with movable groove, the position in movable groove is provided with the ejector pad, the one side that the ejector pad is close to the ball is provided with conflict face and recess face, keeps the conflict face to lean on the ball and promote the ball part to expose outside the mounting hole under the spring initial state, reaches the effect of reliable operation, equipment.

Description

Safe, light and fast assembling and disassembling drill chuck

Technical Field

The utility model relates to a drill chuck field especially relates to a safe light swift drill chuck of loading and unloading.

Background

A drill chuck is a tool commonly used in the field of machining, and is used for clamping a drill bit, and generally comprises a drill body, a clamping jaw, a drill clamping sleeve, a rear cover and the like. According to the technical scheme of the prior application patent with the application number of 201510269018.6, the safe drill chuck comprises a drill clamping sleeve and a columnar drill body, wherein the drill clamping sleeve is sleeved on the drill body and can rotate around the drill body, a plurality of slideways which incline towards the lower end of the drill body are distributed on the drill body along the circumferential direction, a clamping jaw which can axially slide along the slideway is arranged in each slideway, a nut is also arranged in the drill clamping sleeve, the nut is sleeved outside all the clamping jaws and is connected with all the clamping jaws through threads, a groove is formed in the lower end face of the nut, and a convex key is arranged on the inner wall of the drill clamping sleeve and clamped in the groove; the upper end of the drill body is also fixedly provided with a rear cover, and the upper end of the drill clamping sleeve can be abutted against the rear cover.

The split two-piece nut is not favorable for convenience of assembly and maintenance of assembly, increases assembly difficulty, is not simple, convenient and safe enough in connection and assembly of the rear sleeve and the motor shaft, is not very reliable in operation, and has room for perfection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the technical problem in the correlation technique to the weak point of prior art at least to a certain extent, provide a safe light loading and unloading swift drill chuck to reach the purpose that the assembly is laborsaving, safe and reliable, the operation is light swift.

In order to solve the technical problem, the technical scheme of the utility model is that: a safe, light, convenient and fast loading and unloading drill chuck comprises a drill body, a front sleeve, an integral nut, a bearing ring, a separation blade, a clamping jaw, a rear sleeve, a rear snap spring, a ball and a spring, wherein the clamping jaw is obliquely assembled in a chute of the drill body, the integral nut is sleeved on the periphery of the clamping jaw and is in threaded fit with the clamping jaw, the top of the integral nut is abutted against the lower part of the separation blade through the bearing, the separation blade is clamped and fixed in the front sleeve, the outer wall of the integral nut is fixedly connected with the inner wall of the, the rear end of the drill body is circumferentially provided with a plurality of mounting holes, balls are embedded in the mounting holes, the rear sleeve is limited by a rear clamp spring assembled on the drill body and is sleeved at the rear part of the front sleeve, a movable groove is also arranged in the rear sleeve, the spring is characterized in that a push block is arranged at the position of the movable groove, one surface, close to the ball, of the push block is provided with a contact surface and a groove surface, and the contact surface is kept to abut against the ball and pushes the ball to be partially exposed out of the mounting hole in the initial state of the spring.

As a specific aspect of the present invention, it may be preferable that: the spring is a tower-shaped spring and is provided with a large-diameter end and a small-diameter end, the large-diameter end is limited in the movable groove, and the small-diameter end is limited on the side wall of the drill body.

As a specific aspect of the present invention, it may be preferable that: the mounting hole is a circular truncated cone-shaped channel and is provided with a small-caliber end and a large-caliber end, the small-caliber end is positioned on the inner wall side of the drill body, the large-caliber end is positioned on the outer wall side of the drill body, and the diameter of the ball is between the diameter of the small-caliber end and the diameter of the large-caliber end.

As a specific aspect of the present invention, it may be preferable that: the rear end of the drill body is provided with a hollow groove, and a magnet is arranged in the hollow groove.

As a specific aspect of the present invention, it may be preferable that: the inner wall of the push block is provided with a wear-resistant layer, and the wear-resistant layer is an iron sheet, a copper sheet, an aluminum sheet or an alloy sheet.

The utility model discloses technical effect mainly embodies in following aspect: with the drive structure of clamping jaw, adopt whole nut, improve assembly convenience and simple operation nature, utilize the flexible of the upper and lower activity drive ball of back cover in addition, realize boring the connection convenience of body, the assembly method is more simple and convenient, and the reliable safety of use is laborsaving, increase of service life and service reliability.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is an exploded view of the structure of the embodiment;

fig. 3 is a schematic view of the structure of the mounting hole in the embodiment.

Reference numerals: 1. a drill body; 11. a chute; 12. mounting holes; 121. a small-bore end; 122. a large-caliber end; 13. a hollow groove; 14. a magnet; 2. a front cover; 3. an integral nut; 4. a bearing ring; 5. a baffle plate; 6. a clamping jaw; 7. a decorative cap; 8. a clamp spring; 90. a rear sleeve; 901. a movable groove; 902. a push block; 903. a contact surface; 904. a groove surface; 905. a wear layer; 91. a back clamp spring; 92. a ball bearing; 93. a spring; 931. a large diameter end; 932. a small diameter end.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical solutions of the present invention can be more easily understood and grasped, and cannot be construed as limiting the present invention.

Example (b):

a safe, light and convenient assembling and disassembling quick drill chuck is shown in figure 1 and comprises a drill body 1, a front sleeve 2, an integral nut 3, a bearing ring 4, a baffle 5, a clamping jaw 6, a rear sleeve 90, a rear clamp spring 918, a ball 92 and a spring 93. The clamping jaw 6 is assembled in the spout 11 of the drill body 1 in an inclined manner, the whole nut 3 is sleeved on the periphery of the clamping jaw 6 and is in threaded fit with the clamping jaw 6, the top of the whole nut 3 is abutted to the lower side of the separation blade 5 through a bearing, the separation blade 5 is clamped and fixed inside the front sleeve 2, and the outer wall of the whole nut 3 is fixedly connected with the inner wall of the front sleeve 2.

With reference to fig. 1, 2 and 3, in order to solve the problem of the snap connection between the drill bit and the motor, and to avoid the falling of the balls 92 and reduce the service life, the improved structure is embodied as follows: the rear end circumference of the drill body 1 is provided with a plurality of mounting holes 12, balls 92 are embedded in the mounting holes 12, and the rear sleeve 90 is limited by a rear clamp spring 918 assembled on the drill body 1 and sleeved on the rear part of the front sleeve 2. The inner part of the rear sleeve 90 is further provided with a movable groove 901, the position of the movable groove 901 is provided with a push block 902, one surface of the push block 902 close to the ball 92 is provided with an abutting surface 903 and a groove surface 904, and the spring 93 keeps the abutting surface 903 abutting against the ball 92 in an initial state and pushes the ball 92 to be partially exposed out of the mounting hole 12. In the above structure, the diameter of the ball 92 is larger than the length L1 of the mounting hole 12 and smaller than 2 times of the length L1 of the mounting hole 12.

During operation, the rear sleeve 90 is moved up and down by compressing the spring 93 and restoring the spring 93, and the push block 902 can make the ball 92 protrude on the inner wall of the drill body 1 or hide on the drill body 1. When the balls 92 protrude on the inner wall of the drill body 1, the motor shaft can be clamped with the balls 92. When the rear sleeve 90 moves downward to compress the spring 93, the motor shaft can be easily removed because the balls 92 come out of contact with the abutment surface 903 and enter the recessed surface 904. In the process, the sleeve 90 needs to be flexible and reliable after the balls 92 are matched with the sleeve, and is not easy to be blocked.

Further, in order to improve the operational flexibility and reduce the seizing or obstruction, the spring 93 is a tower spring 93 and has a large diameter end 931 and a small diameter end 932, the large diameter end 931 being retained in the movable groove 901, and the small diameter end 932 being retained on the side wall of the drill body 1. The tower spring 93 has the structural characteristics that the moving range of the rear sleeve 90, specifically the moving stroke, can be increased, so that the compression spring 93 and the return spring 93 are both relatively quick. The tower spring 93 is assembled in one direction for easy installation.

In order to reduce the error rate of mounting the ball 92 and the falling of the ball 92, the mounting hole 12 is a truncated cone shaped passage and has a small diameter end 121 and a large diameter end 122, the small diameter end 121 is located on the inner wall side of the drill body 1, the large diameter end 122 is located on the outer wall side of the drill body 1, and the diameter of the ball 92 is between the diameter of the small diameter end 121 and the diameter of the large diameter end 122. So that the balls 92 do not fall into the hollow grooves 13. The inner wall of the push block 902 is provided with a wear-resistant layer 905, and the wear-resistant layer 905 is an iron sheet, a copper sheet, an aluminum sheet or an alloy sheet. Thus, the friction of the balls 92 is reduced, and the movement is smoother. The wear layer 905 is annular and a plurality of radial cuts may be provided on the edge of the annular structure. Such a notch facilitates deformation and restoration of the wear-resistant layer 905, improving its reliability in use.

The rear end of the drill body 1 is provided with a hollow groove 13, and a magnet 14 is arranged in the hollow groove 13. The hollow groove 13 is intended on the one hand to facilitate the mounting of the motor shaft and on the other hand to accommodate a number of screwdriver tools. The magnet 14 can adsorb the screwdriver and can magnetize the drill body 1, so that the clamping process of the clamping jaw 6 is also assisted by magnetic force.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. A safe, light, convenient and fast loading and unloading drill chuck comprises a drill body, a front sleeve, an integral nut, a bearing ring, a separation blade, a clamping jaw, a rear sleeve, a rear snap spring, a ball and a spring, wherein the clamping jaw is obliquely assembled in a chute of the drill body, the integral nut is sleeved on the periphery of the clamping jaw and is in threaded fit with the clamping jaw, the top of the integral nut is abutted against the lower part of the separation blade through the bearing, the separation blade is clamped and fixed in the front sleeve, the outer wall of the integral nut is fixedly connected with the inner wall of the, it is characterized in that a plurality of mounting holes are arranged at the rear end of the drill body in the circumferential direction, balls are embedded in the mounting holes, the rear sleeve is limited by a rear clamp spring assembled on the drill body and is sleeved at the rear part of the front sleeve, a movable groove is also arranged in the rear sleeve, the spring is characterized in that a push block is arranged at the position of the movable groove, one surface, close to the ball, of the push block is provided with a contact surface and a groove surface, and the contact surface is kept to abut against the ball and pushes the ball to be partially exposed out of the mounting hole in the initial state of the spring.

2. A safe and portable detachable shortcut drill chuck as claimed in claim 1, wherein: the spring is a tower-shaped spring and is provided with a large-diameter end and a small-diameter end, the large-diameter end is limited in the movable groove, and the small-diameter end is limited on the side wall of the drill body.

3. A safe and portable detachable shortcut drill chuck as claimed in claim 1, wherein: the mounting hole is a circular truncated cone-shaped channel and is provided with a small-caliber end and a large-caliber end, the small-caliber end is positioned on the inner wall side of the drill body, the large-caliber end is positioned on the outer wall side of the drill body, and the diameter of the ball is between the diameter of the small-caliber end and the diameter of the large-caliber end.

4. A safe and portable detachable shortcut drill chuck as claimed in claim 1, wherein: the rear end of the drill body is provided with a hollow groove, and a magnet is arranged in the hollow groove.

5. A safe and portable detachable shortcut drill chuck as claimed in claim 1, wherein: the inner wall of the push block is provided with a wear-resistant layer, and the wear-resistant layer is an iron sheet, a copper sheet, an aluminum sheet or an alloy sheet.