CN211965968U

CN211965968U - Portable drill chuck

Info

Publication number: CN211965968U
Application number: CN202020574268.7U
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: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-20
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a portable drill chuck belongs to drill chuck instrument technical field, has solved the operational reliability problem, and its technical scheme main points are that the nut is annular integral type structure, the lower extreme lateral wall of nut is provided with the recess that a plurality of circumference distribute, the nut passes through recess and back cover inner wall block and fixes, and the nut inboard is the inclined plane screw thread, and the upper end of nut is provided with the ring channel, the spacing cooperation race ring of ring channel has reached and has improved operational reliability, the assembly of being convenient for, and the manufacturing of being convenient for reduces the effect of the manufacturing degree of difficulty and cost.

Description

Portable drill chuck

Technical Field

The utility model relates to a drill chuck instrument field especially relates to a portable drill chuck.

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. The three clamping jaws are respectively arranged in three slideways of the drill body, the external threads on the clamping jaws are matched with the internal threads on the drill clamping sleeve by rotating the drill clamping sleeve to realize the oblique movement of the clamping jaws, the drilling tool is accurately and automatically centered and clamped, and generally, different drilling tools (such as a central drill, a drill bit, a reamer, a screw tap and the like) can be arranged on one drill clamping head.

In the prior art, the nut structure is usually divided into two halves, as in the earlier technical solutions, the patent application numbers are: 201510269018.6 discloses a safe drill chuck, belongs to mechanical technology field, including boring the drill body that presss from both sides cover and column, it establishes to bore drill chuck cover on the drill body and can rotate around the drill body, it has a plurality of slides that incline towards drill body lower extreme to distribute along circumference on the drill body, be equipped with in the slide and be able to at the gliding clamping jaw of slide, bore press from both sides the cover with still be equipped with between the clamping jaw with clamping jaw looks threaded connection's nut, the nut includes nut half-turn one and nut half-turn two, the lower part of the lateral wall of nut half-turn one and nut half-turn two all with bore the inner wall interference fit who presss from both sides the cover.

Therefore, the nut half-ring I and the nut half-ring II need to be matched with each other in production, the difficulty is high, the nut half-ring I and the nut half-ring II are easy to lose, the assembly is more unfavorable, and the nut is easy to cause clamping stagnation due to unstable positioning.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, solve the technical problem in the correlation technique to a certain extent at least, provide a portable drill chuck to reach the reduction production degree of difficulty, improve production packaging efficiency, the purpose of the reliable use of being convenient for.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a portable drill chuck, includes the brill body, back cover, separation blade, bearing ring, nut, front cover, decorates cap and clamping jaw, decorates the cap and cup joints at brill body lower extreme, the nut is inlayed to the front cover inner wall, and the upper end and the bearing ring of nut support each other, and the bearing ring is gone up and the spacing fixing of separation blade is at the front cover internal rotation, the back end portion at the front cover is cup jointed to the back cover, the brill body rotates the axis position of connecting at the back cover, clamping jaw and nut screw-thread fit are slided in the slide of the brill body side direction, the nut is annular integral type structure, the lower extreme lateral wall of nut is provided with the recess of a plurality of circumference distributions, the nut passes through recess and back cover inner wall block fixed, and the nut inboard is the inclined plane screw thread that is, and the.

As a specific aspect of the present invention, it may be preferable that: the step radius of ring channel is less than the internal diameter of race ring, is provided with the joint portion that is used for fixed connection at the brill body on the inside wall of separation blade, still is provided with the groove of stepping down that supplies the clamping jaw activity on the inside wall of separation blade.

As a specific aspect of the present invention, it may be preferable that: the bearing ring comprises a rubber sleeve body and balls, the rubber sleeve body is made of plastic materials, a mounting cavity for enabling the balls to be embedded and limited is arranged on the rubber sleeve body, the two ends of the mounting cavity are contracted and expanded in the middle, and the two ends of the mounting cavity are contracted and formed in a shape through hot stamping.

As a specific aspect of the present invention, it may be preferable that: the rubber sleeve body is in a concave-convex wave shape.

As a specific aspect of the present invention, it may be preferable that: the separation blade is installed in the position of the drill body middle step, and the periphery of the separation blade is in clearance fit with the inner wall of the front sleeve.

As a specific aspect of the present invention, it may be preferable that: the separation blade is provided with an incision to form an open loop structure.

The utility model discloses technical effect mainly embodies in following aspect:

1. after the structural design of the nut is improved, the integrated structure is convenient to process, the processing procedures are reduced, the production and manufacturing cost is reduced, and meanwhile, the convenience of assembly and the reliability of use are met;

2. the design and assembly structure of the bearing ring can improve the flexibility of the front sleeve and reduce the abrasion, thereby prolonging the service life;

3. the assembly and the structural improvement of separation blade and other parts for separation blade limit function is more reliable, and can utilize the open loop structure, utilizes the elastic capacity behind the open loop, reaches the pretightning force that improves the assembly.

Drawings

FIG. 1 is a partial sectional view of the structural assembly of the embodiment;

FIG. 2 is a perspective view showing the structure of the front cover in the embodiment;

FIG. 3 is an exploded view of the structure of the embodiment;

FIG. 4 is an enlarged view of portion A of FIG. 1;

fig. 5 is a schematic structural view of a bearing ring in the embodiment.

Reference numerals: 1. a drill body; 11. a slideway; 2. a rear sleeve; 3. a baffle plate; 31. a yielding groove; 32. a clamping part; 33. cutting; 4. a bearing ring; 41. a rubber sleeve body; 410. necking; 42. a ball bearing; 5. a nut; 51. a groove; 52. inclined plane screw threads; 53. an annular groove; 6. a front cover; 61. fitting the inner wall surface; 62. a mating key; 7. a decorative cap; 8. a clamping jaw.

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):

referring to fig. 1, 2 and 3, a portable drill chuck comprises a drill body 1, a rear sleeve 2, a baffle 3, a bearing ring 4, a nut 5, a front sleeve 6, a decorative cap 7 and a clamping jaw 8. With reference to fig. 1 and 3, the drill body 1 has a slide 11 for sliding the clamping jaw 8. The assembly and component structure of the drill body 1, the rear sleeve 2, the front sleeve 6, the cosmetic cap 7, and the jaws 8 is prior art and not improved.

The decorative cap 7 is sleeved at the lower end of the drill body 1, the nut 5 is embedded in the inner wall of the front sleeve 6, the upper end of the nut 5 and the bearing ring 4 are mutually supported, the bearing ring 4 and the separation blade 3 are limited and fixed in the front sleeve 6 to rotate, the rear sleeve 2 is sleeved at the rear end part of the front head, the drill body 1 is rotatably connected to the central axis position of the rear sleeve 2, and the clamping jaw 8 and the nut 5 are in threaded fit and slide inwards in the slide 11 of the drill body 1.

Referring to fig. 1 and 3, the improvement of the pipe fitting in the scheme is as follows: nut 5 is annular integral type structure, and the lower extreme lateral wall of nut 5 is provided with the recess 51 of a plurality of circumference distributions, and nut 5 is fixed through recess 51 and the 2 inner wall block of back cover, and 5 inboards of nut are inclined plane screw thread 52, and the upper end of nut 5 is provided with ring channel 53, the spacing cooperation race ring 4 of ring channel 53. The nut 5 is relatively simple to construct and assemble, can be assembled directly by telescoping, and can be snapped into the front sleeve 6 of fig. 2. The fitting inner wall surface 61 of the front housing 6 is fitted to the bearing ring 4, and the fitting key 62 can be fitted to the recess 51 of the nut 5.

Referring to fig. 4, the step radius R1 of the annular groove 53 is smaller than the inner diameter R2 of the bearing ring 4. The inner side wall of the separation blade 3 is provided with a clamping part 32 which is fixedly connected with the drill body 1, and the inner side wall of the separation blade 3 is also provided with a yielding groove 31 for the clamping jaw 8 to move. Thus, the retainer 3 can retain the bearing ring 4 and can maintain the durability of the lubricating oil. The separation blade 3 is arranged at the step position in the middle of the drill body 1, and the periphery of the separation blade 3 is in clearance fit with the inner wall of the front sleeve 6. Therefore, the baffle 3 can improve the firm degree of installation and the reliability of limiting.

Because of the limited assembly space in this structure, the bearing ring 4 includes the rubber sleeve body 41 and the ball 42, and the rubber sleeve body 41 is made of plastic. Therefore, the assembly can be more light, better lubrication can be ensured, the friction resistance is reduced, and the service life is prolonged. Referring to fig. 5, the rubber sleeve body 41 is provided with an installation cavity for the ball 42 to be embedded and limited, the middle of the two end throats 410 of the installation cavity expands, and the shapes of the two end throats 410 of the installation cavity are formed by hot stamping. Because the rubber sleeve body 41 can be shaped, the possibility of falling off of the ball 42 is reduced, and the use reliability is improved.

Referring to fig. 5, the rubber housing body 41 has a concavo-convex wave shape. The rubber sleeve body 41 is mainly made of plastic materials, and the sheet structure has certain elastic deformable capacity, so that the rubber sleeve body is convenient to assemble.

The flap 3 is provided with a cut-out 33 forming an open loop. The separation blade 3 is an annular structure visible in fig. 3, and an open-loop structure is formed after the notch 33 is adopted, so that the clamping is convenient to assemble, and in addition, the pretightening force can be improved, so that the separation blade 3 can be clamped on the drill body 1 more tightly.

When the clamping jaw type drill is used, the front sleeve 6 is rotated to drive the nut 5 to rotate, so that the clamping jaw 8 moves up and down in the slide way 11 of the drill body 1, and the clamping jaw 8 is opened and closed.

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. The utility model provides a portable drill chuck, includes bores body, back cover, separation blade, bearing circle, nut, front cover, decorates cap and clamping jaw, decorates the cap and cup joints at boring body lower extreme, the nut is inlayed to the front cover inner wall, and the upper end and the bearing circle of nut support each other, and bearing circle and separation blade are spacing to be fixed at the front cover internal rotation, the back end portion at the front cover is cup jointed to the back cover, bore the body and rotate the axis position of connecting at the back cover, clamping jaw and nut screw-thread fit are inboard to sliding in the slide of boring the body, characterized by, the nut is annular integral type structure, the lower extreme lateral wall of nut is provided with the recess of a plurality of circumference distributions, the nut passes through recess and back cover inner wall block fixed, and the nut inboard is the inclined plane screw thread, and the upper end of nut is provided with the ring channel.

2. The portable drill chuck according to claim 1, characterized in that: the step radius of ring channel is less than the internal diameter of race ring, is provided with the joint portion that is used for fixed connection at the brill body on the inside wall of separation blade, still is provided with the groove of stepping down that supplies the clamping jaw activity on the inside wall of separation blade.

3. The portable drill chuck according to claim 1, characterized in that: the bearing ring comprises a rubber sleeve body and balls, the rubber sleeve body is made of plastic materials, a mounting cavity for enabling the balls to be embedded and limited is arranged on the rubber sleeve body, the two ends of the mounting cavity are contracted and expanded in the middle, and the two ends of the mounting cavity are contracted and formed in a shape through hot stamping.

4. The portable drill chuck according to claim 3, characterized in that: the rubber sleeve body is in a concave-convex wave shape.

5. The portable drill chuck according to claim 1, characterized in that: the separation blade is installed in the position of the drill body middle step, and the periphery of the separation blade is in clearance fit with the inner wall of the front sleeve.

6. The portable drill chuck according to claim 5, characterized in that: the separation blade is provided with an incision to form an open loop structure.