CN211564618U

CN211564618U - Electric drill chuck

Info

Publication number: CN211564618U
Application number: CN201922070783.1U
Authority: CN
Inventors: 李慧芳
Original assignee: Hefei Nuoyi Precision Tools Co ltd
Current assignee: Hefei Nuoyi Precision Tools Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-09-25
Anticipated expiration: 2029-11-27

Abstract

The utility model relates to a drill chuck technical field especially relates to an electric drill chuck, including fixed shell and drill bit, it has the fixed block to peg graft through the bearing is fixed in the fixed shell, the upper end of fixed block is connected with the axis of rotation, the upper end of drill bit is connected with the stopper, and the stopper is located the inside of fixed shell and inserts the spacing chamber that the fixed block lower extreme was seted up, and the drill bit that will have the stopper inserts fixed shell in, and the stopper is located spacing chamber, through the teeth of a cogwheel and gear engagement, the drill bit is fixed inside fixed shell by the centre gripping, this fixed mode, easy operation, convenience realize reliable centre gripping, the problem of avoiding skidding the pine to take off, dismantle the convenience simultaneously, appear locking after avoiding working, the problem that can.

Description

Electric drill chuck

Technical Field

The utility model relates to a drill chuck technical field especially relates to an electric drill chuck.

Background

The drill bit is driven by machinery to rotate, so that the whole drill bit is driven to move centripetally, and the articles are cracked and broken through cutting and grinding, so that the effect of drilling downwards is achieved. The drill bit is fixed on the transmission equipment through the drill bit clamp, and the existing drill bit clamp has various defects, such as the problem that the hand-tightened drill bit clamp cannot reliably clamp in use, has the phenomenon of slipping and loosening, and is locked after working and cannot be loosened after the self-locking hand-tightened drill bit clamp works.

Aiming at the problems, the electric drill chuck is designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric drill chuck to solve above-mentioned technical problem.

The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme to realize:

an electric drill chuck comprises a fixed shell and a drill bit, wherein a fixed block is fixedly inserted in the fixed shell through a bearing, the upper end of the fixed block is connected with a rotating shaft, the upper end of the drill bit is connected with a limiting block, the limiting block is positioned in the fixed shell and is inserted into a limiting cavity arranged at the lower end of the fixed block,

the lower extreme of fixed block is connected with the installation pipe, and the drill bit is located the inside of installation pipe, threaded connection has cross recess hexagonal head bolt in the screw hole of seting up on the installation pipe, and the bar notch of seting up on cross recess hexagonal head bolt and the set casing is on same water flat line, one section threaded connection that cross recess hexagonal head bolt is located the installation inside has the nut, be connected with the sliding sleeve on the lateral wall of nut, the activity is pegged graft in the sliding sleeve has the gag lever post, and the one end of gag lever post is connected with the inside wall of installation pipe, the one end of nut is connected with the teeth of a cogwheel through the arc pole, and the teeth of a cogwheel and gear engagement, gear cup joint.

Preferably, the limit cavity is a rectangular frustum with the lower end side length larger than the upper end side length, and the limit block is a cube.

Preferably, the length of the diagonal line of the bottom surface of the limiting block is greater than the distance between two opposite teeth on the gear, so that the upper position and the lower position of the drill bit are limited, and the change of the upper position and the lower position of the drill bit is prevented in the working process.

Preferably, the thread section of the outer side wall of the fixed shell is in threaded connection with a protective sleeve, the protective sleeve covers the strip-shaped notch, and components inside the fixed shell are protected.

Preferably, the inner side wall of the protective sleeve is connected with a rubber ring, and the rubber ring is abutted to the outer side wall of the fixed shell.

The utility model has the advantages that:

the drill bit that will have the stopper inserts fixed shell, and the stopper is located spacing chamber, through teeth of a cogwheel and gear engagement, the drill bit is fixed inside fixed shell by the centre gripping, this fixed mode, and easy operation, convenience realize reliable centre gripping, avoid the problem of the pine of skidding pine take off, and it is convenient to dismantle simultaneously, avoids appearing locking behind the work, the problem that can't loosen.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure A of the present invention;

fig. 3 is a schematic structural view of the fixing housing of the present invention;

reference numerals: 1-fixing the housing; 101-a bar-shaped notch; 2-a bearing; 3, fixing blocks; 301-a spacing cavity; 4-a rotating shaft; 5-a drill bit; 6-a limiting block; 7-a gear; 8-installing a pipe; 9-cross recess hexagon head bolt; 10-a screw cap; 11-a sliding sleeve; 12-a limiting rod; 13-an arc-shaped rod; 14-gear teeth; 15-protective sleeve.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-3, an electric drill chuck comprises a fixed shell 1 and a drill bit 5, wherein the fixed shell 1 is fixedly arranged on an electric drill, a fixed block 3 is fixedly inserted in the fixed shell 1 through a bearing 2, the upper end of the fixed block 3 is connected with a rotating shaft 4, the rotating shaft 4 is connected with the rotating output end of the electric drill, the upper end of the drill bit 5 is connected with a limit block 6, the limit block 6 is positioned in the fixed shell 1 and inserted into a limit cavity 301 arranged at the lower end of the fixed block 3,

the lower end of the fixed block 3 is connected with a mounting pipe 8, the drill bit 5 is positioned inside the mounting pipe 8, a threaded hole formed in the mounting pipe 8 is connected with a cross recessed hexagonal head bolt 9 in a threaded manner, the cross recessed hexagonal head bolt 9 and a strip-shaped notch 101 formed in the fixed shell 1 are on the same horizontal line, a section of the cross recessed hexagonal head bolt 9 positioned inside the mounting pipe 8 is connected with a nut 10 in a threaded manner, the outer side wall of the nut 10 is connected with a sliding sleeve 11, a limiting rod 12 is movably inserted in the sliding sleeve 11, one end of the limiting rod 12 is connected with the inner side wall of the mounting pipe 8, one end of the nut 10 is connected with a gear tooth 14 through an arc-shaped rod 13, the gear tooth 14 is meshed with a gear 7, and the gear;

in the present case, insert drill bit 5 that has stopper 6 in fixed shell 1, stopper 6 is located spacing chamber 301, and the inside of utilizing instruments such as screwdriver to insert fixed shell 1 through bar notch 101, with the rotation of cross recess hexagon head bolt 9, under the effect of sliding sleeve 11 and gag lever post 12, the nut 10 takes place to remove about, and nut 10 drives the teeth of a cogwheel 14 through arc pole 13 and is close to gear 7 and mesh with it, and drill bit 5 is fixed inside fixed shell 1.

Spacing chamber 301 is the quadrangular frustum of a pyramid that the lower extreme length of side is greater than the upper end length of side, and stopper 6 is the square, and the length of the bottom surface diagonal of stopper 6 is greater than the distance between two relative teeth on gear 7, and stopper 6 offsets with the teeth of a cogwheel 14, prescribes a limit to the upper and lower position of drill bit 5, prevents at the in-process of work, and the upper and lower position of drill bit 5 takes place to change.

The screw thread section of thick bamboo 15 of protecting of seting up on the 1 lateral wall of fixed housing, be connected with the rubber circle on the inside wall of protecting the cover section of thick bamboo 15, the rubber circle offsets with the lateral wall of fixed housing 1, when need not changing the installation to drill bit 5, rotates down to covering bar notch 101 with a protection cover section of thick bamboo 15, protects the inside part of fixed housing 1.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an electric drill chuck, includes fixed shell (1) and drill bit (5), its characterized in that: a fixed block (3) is fixedly inserted in the fixed shell (1) through a bearing (2), the upper end of the fixed block (3) is connected with a rotating shaft (4), the upper end of the drill bit (5) is connected with a limit block (6), the limit block (6) is positioned in the fixed shell (1) and inserted into a limit cavity (301) formed at the lower end of the fixed block (3),

the lower end of the fixing block (3) is connected with a mounting pipe (8), the drill bit (5) is positioned in the mounting pipe (8), a threaded hole formed in the mounting pipe (8) is connected with a cross recessed hexagonal head bolt (9) in a threaded manner, the cross recessed hexagonal head bolt (9) and a strip-shaped notch (101) formed in the fixing shell (1) are on the same horizontal line, one section of the cross recessed hexagonal head bolt (9) positioned in the mounting pipe (8) is connected with a nut (10) in a threaded manner, the outer side wall of the nut (10) is connected with a sliding sleeve (11), a limiting rod (12) is movably inserted in the sliding sleeve (11), one end of the limiting rod (12) is connected with the inner side wall of the mounting pipe (8), one end of the nut (10) is connected with gear teeth (14) through an arc-shaped rod (13), and the gear teeth (14) are meshed with a gear (7), the gear (7) is sleeved on the drill bit (5).

2. An electric drill chuck according to claim 1, wherein: the limiting cavity (301) is a quadrangular frustum with the lower end side length larger than the upper end side length, and the limiting block (6) is a cube.

3. An electric drill chuck according to claim 1, wherein: the length of the diagonal line of the bottom surface of the limiting block (6) is greater than the distance between two opposite teeth on the gear (7).

4. An electric drill chuck according to claim 1, wherein: the outer side wall of the fixed shell (1) is provided with a threaded section which is in threaded connection with a protective sleeve (15).

5. An electric drill chuck according to claim 4, wherein: the inner side wall of the protective sleeve (15) is connected with a rubber ring, and the rubber ring is abutted to the outer side wall of the fixed shell (1).