CN214081166U

CN214081166U - Fast switching batch head device

Info

Publication number: CN214081166U
Application number: CN202022461470.1U
Authority: CN
Inventors: 庄能杰; 庄孟勋
Original assignee: Tuojin Jiangsu Hardware Co ltd
Current assignee: Tuojin Jiangsu Hardware Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-08-31
Anticipated expiration: 2030-10-29

Abstract

The utility model provides a quick switching batch head device, which comprises a sleeve, a rotary drum and a batch head body; a blind hole with a hexagonal cross section and a mounting hole with a circular cross section are coaxially arranged in the sleeve, the blind hole is deeper than the mounting hole, the maximum aperture of the blind hole is smaller than the aperture of the mounting hole, and the bit body is provided with an outer hexagonal cross section matched with the blind hole; the rotary drum is arranged in the mounting hole, a through hole is formed in the rotary drum, and the head of the bit body penetrates through the through hole and then is inserted into the blind hole; be equipped with the neck ring of internal contraction on the batch head body, correspond neck ring department on the lateral wall of rotary drum and set up the ball hole at interval, be equipped with the ball groove on the telescopic inner wall correspondingly, installation compression spring and ball in the ball groove, compression spring can extrude the neck ring of extrusion batch head body after the ball passes the ball hole of rotary drum, and rotatory rotary drum can impress the ball in the ball groove. The utility model discloses but head is criticized to quick replacement, criticizes the connection between head and the sleeve stable, criticizes the head and is difficult to drop convenient operation from the sleeve in.

Description

Fast switching batch head device

Technical Field

The utility model belongs to the technical field of hardware and tools, concretely relates to fast switch-over criticizes first device.

Background

The screwdriver bit is generally a screwdriver bit which is arranged on an electric hand drill or a screwdriver and used for screwing screws, is widely applied to assembly and disassembly operations of workpieces, has various specifications and types, and can be detachably arranged on a handle of the electric hand drill or the screwdriver so as to flexibly adapt to disassembly and assembly operations on different occasions.

Criticize when first use because need change frequently criticize the head, consequently criticize first use more of current take telescopic ready-package structure, set up the mounting hole of interior hexagonal type in the sleeve, criticize the tip of head for with this mounting hole complex outer hexagon, during the use will criticize the tip of head insert in this sleeve can, though criticize first change fast, criticize the connection between head and the sleeve unstable, criticize the head and drop in following the sleeve very easily, lead to the operation inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a first device is criticized in fast switch-over to when realizing that quick replacement criticizes the head, solve and criticize the connection between head and the sleeve unstable, criticize the head and drop in following the sleeve very easily, lead to the inconvenient problem of operation.

The utility model provides a following technical scheme:

a fast switching batch head device comprises a sleeve, a rotary drum and a batch head body;

the screwdriver head comprises a sleeve, a screwdriver handle, a blind hole and a mounting hole, wherein the sleeve is fixedly connected with the screwdriver handle, the blind hole with an inner hexagonal cross section and the mounting hole with a circular cross section are coaxially arranged in the sleeve, the blind hole is deeper than the mounting hole, the maximum aperture of the blind hole is smaller than the aperture of the mounting hole, and the screwdriver head body is provided with an outer hexagonal cross section matched with the blind hole;

the rotary drum is arranged in the mounting hole, a through hole for the batch head body to pass through is coaxially arranged in the rotary drum, and the head of the batch head body is inserted into the blind hole after passing through the through hole;

the neck of the bit body is provided with a ring of neck rings which are retracted inwards, the side wall of the rotary drum is provided with ball holes at intervals corresponding to the neck rings, the inner wall of the sleeve is correspondingly provided with a plurality of ball grooves, compression springs and balls are arranged in the ball grooves, the compression springs can extrude the balls to penetrate through the ball holes of the rotary drum and then extrude the neck rings of the bit body, and the rotary drum can press the balls into the ball grooves.

Preferably, the external hexagonal cross-section of the bit body is inscribed in the through hole in the drum.

Furthermore, a limiting ring protruding outwards is coaxially arranged at the head of the rotary drum, a limiting groove matched with the limiting ring is arranged in the sleeve, and the limiting ring can rotate in the limiting groove.

Furthermore, a knob is formed at the tail of the rotary drum and is tightly attached to the bottom end face of the sleeve, and the outer diameter of the knob is larger than that of the sleeve.

Preferably, a circle of anti-slip grooves are formed in the outer circumferential wall of the knob.

Preferably, the sleeve comprises a first cylinder and a second cylinder which are fixedly connected, and the first cylinder and the second cylinder are symmetrically cut along the axial direction of the sleeve.

Preferably, a magnet piece is fixed to the top end of the bit body and can be attracted to the top surface of the blind hole.

The utility model has the advantages that:

the utility model discloses rotatably install the rotary drum in the sleeve, limit in the hexagonal blind hole of sleeve behind the through-hole in the rotary drum body of batch head, prevent that batch head body from freely rotating during operation; the sleeve is internally provided with a compression spring and balls, and the compression spring presses the balls into a neck ring of the batch head body after the balls pass through a ball hole of the rotary drum, so that the batch head body is clamped and prevented from falling off from the sleeve in the use process, and the operation is convenient; when the batch head needs to be replaced, the rotary drum is rotated, the balls are pressed into the ball grooves by utilizing the outer wall of the rotary drum, and then the batch head body is pulled downwards to be detached from the sleeve. The utility model discloses can realize that quick replacement criticizes the head, use easily laborsavingly, and criticize the firm stability of installation of head, use reliably.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the present invention in a partial cross-sectional structure;

FIG. 2 is a schematic view of the structure of the batch head body of the present invention;

FIG. 3 is a schematic view of the structure of the rotary drum of the present invention;

fig. 4 is a schematic cross-sectional structure diagram of the drum and the batch head body of the present invention.

Labeled as: 1. a sleeve; 2. a rotating drum; 3. a bit body; 4. blind holes; 5. mounting holes; 6. a magnet piece; 7. a through hole; 8. a neck ring; 9. a ball hole; 10. a ball groove; 11. a compression spring; 12. a ball bearing; 13. a limiting ring; 14. a first cylinder; 15. a second cylinder; 16. a knob; 17. and (4) an anti-slip groove.

Detailed Description

As shown in fig. 1 to 4, a fast switching batch head device includes a sleeve 1, a drum 2 and a batch head body 3.

Sleeve 1 fixed connection screwdriver handle, as shown in fig. 1, the bottom of sleeve 1 is equipped with the blind hole 4 that the cross section is interior hexagon and the mounting hole 5 that the cross section is circular shape coaxially, and blind hole 4 is darker than mounting hole 5, and the maximum aperture of blind hole 4 is less than the aperture of mounting hole 5, and criticize first body 3 has the cross section of outer hexagon with blind hole 4 complex to utilize the spacing criticizing first body 3 of blind hole 4, prevent criticizing first body 3 free rotation in the use. The magnet piece 6 is fixed on the top end of the batch head body 3 through a screw, and the magnet piece 6 can be attracted to the top surface of the blind hole 4, so that the connection strength between the batch head body 3 and the sleeve 1 is further increased, and the batch head body 3 is prevented from falling off from the sleeve 1.

The rotary drum 2 is rotatably arranged in the mounting hole 5, a through hole 7 for the bit body 3 to pass through is coaxially arranged in the rotary drum 2, and the head of the bit body 3 is inserted into the blind hole 4 after passing through the through hole 7; wherein, as shown in fig. 4, the external hexagonal cross section of the bit body 3 is inscribed in the through hole 7 in the rotary drum 2, so that, when the rotary drum 2 is rotated, six vertex angles of the external hexagonal shape of the bit body 3 do not interfere with the free rotation of the rotary drum 2.

As shown in fig. 1 and 2, a neck of the bit body 3 is provided with a ring of neck ring 8 which is retracted inwards, the cross section of the neck ring 8 is circular, ball holes 9 are arranged on the side wall of the rotary drum 2 at intervals corresponding to the neck ring 8, a plurality of ball grooves 10 are correspondingly arranged on the inner wall of the sleeve 1, compression springs 11 and balls 12 are mounted in the ball grooves 10, the compression springs 11 can extrude the balls 12 to penetrate through the ball holes 9 of the rotary drum and then extrude the neck ring 8 of the bit body, so that the bit body 3 is radially limited on the sleeve 1 without falling off, when the bit needs to be replaced, the rotary drum 2 is rotated, the balls 12 are pressed into the ball grooves 10 to eliminate the radial limiting effect on the bit body 3, and the bit body 3 can be easily pulled out of the sleeve 1.

In order to make the assembly between the rotating cylinder 2 and the sleeve 1 more stable, a limiting ring 13 protruding outwards is coaxially arranged at the head of the rotating cylinder 2, a limiting groove matched with the limiting ring 13 is arranged in the sleeve 1, the limiting ring 13 can rotate in the limiting groove, and the limiting ring 13 prevents the rotating cylinder 2 from falling off from the sleeve 1. The sleeve 1 comprises a first cylinder 14 and a second cylinder 15 which are welded or screwed or bonded by strong glue, and the first cylinder 14 and the second cylinder 15 are symmetrically cut along the axial direction of the sleeve 1. During assembly, the first cylinder 14 and the second cylinder 15 which are provided with the compression spring and the balls are coated on the rotary drum 2 from the outer side of the rotary drum 2, and then the first cylinder 14 and the second cylinder 15 are fixedly connected together to form a sleeve.

As shown in fig. 1 and 3, in order to facilitate the operation of the drum 2, a knob 16 is integrally formed at the tail of the drum 2, the knob 16 is tightly attached to the bottom end surface of the sleeve 1, and the outer diameter of the knob 16 is slightly larger than that of the sleeve 1. The knob 16 is provided with a ring of anti-slip grooves 17 on the outer circumferential wall. Turning the knob 16 allows the drum 2 to be easily rotated.

The using method of the device comprises the following steps:

when the bit is installed, the ball 12 is pressed into the ball groove 10 from the rotary drum 2, so that the bit body 3 is directly inserted into the rotary drum 2 until the head of the bit body 3 is inserted into the blind hole 4, and the bit body 3 is firmly attracted by the magnet piece 6; the barrel 2 is then rotated so that the balls 12 pass through the ball holes 9 and are pressed into the collar 8 of the bit body to further radially secure the bit body 3 against removal from the sleeve 1.

When the batch head needs to be detached, the rotating cylinder 2 is rotated again until the ball 12 is pressed into the ball groove 10 by the rotating cylinder 2, and then the batch head body 3 is pulled out from the sleeve 1.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fast switching batch head device is characterized by comprising a sleeve, a rotary drum and a batch head body;

2. The fast switching batch head device according to claim 1, wherein the external hexagonal cross section of the batch head body is inscribed in the through hole in the rotary drum.

3. The fast switching batch head device according to claim 2, wherein the head of the rotary drum is coaxially provided with a limiting ring protruding outwards, the sleeve is provided with a limiting groove matching with the limiting ring, and the limiting ring can rotate in the limiting groove.

4. The fast switching batch head device according to claim 3, wherein the sleeve comprises a first cylinder and a second cylinder which are fixedly connected, and the first cylinder and the second cylinder are cut along the axial direction of the sleeve.

5. The fast switching batch head device of claim 2, wherein the tail of the rotary drum is formed with a knob, the knob is tightly attached to the bottom end surface of the sleeve, and the outer diameter of the knob is larger than the outer diameter of the sleeve.

6. The device for switching bits as claimed in claim 5, wherein the knob has a ring of anti-slip grooves on its outer circumferential wall.

7. The fast switching batch head device according to any one of claims 1 to 6, wherein a magnet piece is fixed on the top end of the batch head body, and the magnet piece can be adsorbed on the top surface of the blind hole.