CN210255904U

CN210255904U - Screw driver capable of preventing screw from bouncing off

Info

Publication number: CN210255904U
Application number: CN201920412556.XU
Authority: CN
Inventors: 施庆丰; 肖玉春; 袁云伟
Original assignee: Zhejiang Zhongyan Construction Co Ltd
Current assignee: Zhejiang Zhongji Construction Co., Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-04-07
Anticipated expiration: 2029-03-28

Abstract

The utility model discloses a prevent screwdriver that screw bullet flies, including handle and cutter arbor, the tip of cutter arbor is provided with the tool bit, the cover is equipped with the guard shield on the cutter arbor, guard shield and cutter arbor sliding connection, the tool bit is the magnetism tool bit, the utility model discloses when twisting the commentaries on classics screw, can cover the screw, if take place the screw slope and break away from the tool bit when, the guard shield will prevent the screw departure, not only can avoid hindering the people and can prevent that the screw from losing.

Description

Screw driver capable of preventing screw from bouncing off

Technical Field

The utility model belongs to the screwdriver field, more specifically the screwdriver that prevents that screw bullet flies that says so.

Background

A screwdriver is a tool used to turn a screw into place and typically has a thin wedge or crosshead that is inserted into a slot or recess in the head of the screw.

At present, when a screwdriver is used for screwing a self-tapping screw, the screwdriver is rotated, the screwdriver is pushed forcibly in the axial direction, the end part of the screw can extend into a to-be-fixed object, the screw often inclines when being pushed forcibly, the screw flies, the speed is high when the screw flies, people are easily injured, small screws are difficult to find, and large screws fall on the ground and easily penetrate through soles to be injured.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a when twisting the commentaries on classics screw, can cover the screw, if take place the screw slope and break away from when the tool bit, the guard shield will prevent the screw departure, not only can avoid hindering the people but also can prevent that the screw from losing prevents the screwdriver that the screw bullet flies.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a prevent screwdriver that screw bullet flies, includes handle and cutter arbor, and the tip of cutter arbor is provided with the tool bit, the cover is equipped with the guard shield on the cutter arbor, guard shield and cutter arbor sliding connection, the tool bit is the magnetism tool bit.

Further be provided with the spacing ring on the cutter arbor, the guard shield cover is located the cutter arbor and is corresponded the department between spacing ring and the handle, and the length of guard shield is greater than the distance of spacing ring to tool bit tip.

Further be provided with joint bearing between guard shield and the cutter arbor, joint bearing and cutter arbor sliding connection.

Further, a compression spring is arranged between the protective cover and the cutter bar or the handle.

Further the shield is a transparent cover.

Or the shield comprises a supporting cover, a plurality of hollow parts are arranged on the supporting cover, and transparent plates are arranged at the hollow parts.

Compared with the prior art, the beneficial effects of the utility model are that: through the arrangement of the protective cover, when the screw is screwed, the screw is adsorbed on the magnetic cutter head, the tip of the screw is aligned to the object to be fixed, and the protective cover slides to enable the protective cover to contact the object to be fixed, at the moment, the handle can be screwed, even if the screw is inclined to bounce, the protective cover can prevent the screw from flying out, and the screw can be adsorbed again by the magnetic cutter head when rebounding, and the screw can be screwed again only by readjusting the posture of the screw; when the screw is screwed towards the vertical surface or the top surface or the inclined surface, the compression spring can enable the protective cover to be always attached to the object to be fixed; when the screw inclines and wants to flick away, the screwdriver probably also can incline, and joint bearing can make cutter arbor and guard shield take place relative slope this moment, avoids the guard shield to receive the sudden extrusion damage to the guard shield can keep with treating the contact of fixture in order to block the screw flick away.

Drawings

Fig. 1 is a schematic structural view of the screwdriver for preventing the screw from bouncing off;

fig. 2 is a schematic view of a partial section structure of the screwdriver preventing the screw from bouncing off.

Reference numerals: 1. a handle; 2. a cutter bar; 21. a cutter head; 23. a limiting ring; 3. a shield; 31. and a knuckle bearing.

Detailed Description

The embodiment of the screwdriver for preventing the screw from bouncing off according to the present invention is further described with reference to fig. 1 and 2.

The utility model provides a prevent screwdriver that screw bullet flies, includes handle 1 and cutter arbor 2, and the tip of cutter arbor 2 is provided with tool bit 21, the cover is equipped with guard shield 3 on the cutter arbor 2,

guard shield

3 and 2 sliding connection of cutter arbor, tool bit 21 is magnetic tool bit 21.

If two boards are fixed on the ground, the screw is firstly placed in a correct posture and adsorbed on the magnetic tool bit 21, then the two boards are aligned with the object to be fixed and contacted, the protective cover 3 is contacted with the object to be fixed after sliding along the cutter bar 2, namely, the whole magnetic tool bit 21 and the screw are covered, the screw can be turned by force at the moment, if the screw is inclined and is about to fly, the protective cover 3 can prevent the screw from flying out, the screw is collided on the protective cover 3, rebounded and adsorbed by the magnetic tool bit 21, and the screw can be turned again only by sliding the protective cover 3 and re-placing the screw posture.

The preferred shield 3 is generally cylindrical with an inner diameter substantially larger than the diameter of the magnetic tips 21.

Wherein the cutter head 21 can be detachable with the cutter bar 2, so that different screws can be screwed by different cutter heads 21.

This embodiment is preferred be provided with spacing ring 23 on the

cutter arbor

2, 3 covers of guard shield 3 locate the cutter arbor 2 and correspond between spacing ring 23 and the handle 1 department, and the length of guard shield 3 is greater than the distance of spacing ring 23 to tool bit 21 tip, guarantees that guard shield 3 can cover the screw completely, and spacing ring 23 can prevent that guard shield 3 from breaking away from cutter arbor 2, avoids taking place to lose.

In the preferred embodiment, the joint bearing 31 is disposed between the shield 3 and the arbor 2, the joint bearing 31 is slidably connected to the arbor 2, when the screw is tilted, the arbor 2 may be tilted to a certain extent at the same time, and at this time, the joint bearing 31 between the arbor 2 and the shield 3 moves, so that the shield 3 maintains the original posture as much as possible.

It is preferred that this embodiment be provided with compression spring (not shown) between guard shield 3 and cutter arbor 2 or the handle 1, according to the length optional compression spring's of cutter arbor 2 position, if cutter arbor 2 is shorter, then compression spring direct conflict can on handle 1, if cutter arbor 2 is longer, can make compression spring conflict somewhere on cutter arbor 2, when the screw is twisted to the surface or vertical surface or orientation top of slope, compression spring makes 3 subsides of guard shield tightly wait the fixture surface automatically, need not to hand, it is more convenient to use.

The preferred guard shield 3 of this embodiment is the translucent cover, and it can adopt transparent acrylic sheet to make or other transparent plastics materials to make, conveniently looks over the inside screw condition.

The shield 3 in this embodiment may also be configured as follows: the guard shield 3 is including supporting the cover, support and cover and seted up a plurality of fretwork portions, fretwork portion department is provided with the transparent plate, and wherein support and cover and adopt metal to make, structural strength is high, and the transparent plate adopt plastics can, be used for looking over the inside screw condition equally.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a prevent screwdriver that screw bullet flies, includes handle and cutter arbor, and the tip of cutter arbor is provided with tool bit, its characterized in that: the cutter bar is sleeved with a protective cover, the protective cover is in sliding connection with the cutter bar, the cutter head is a magnetic cutter head, a joint bearing is arranged between the protective cover and the cutter bar, the joint bearing is in sliding connection with the cutter bar, and a compression spring is arranged between the protective cover and the cutter bar or the handle.

2. The screwdriver preventing the screw from bouncing off according to claim 1, which is characterized in that: the cutter bar is provided with a limiting ring, the protecting cover is sleeved on the position, corresponding to the position between the limiting ring and the handle, of the cutter bar, and the length of the protecting cover is larger than the distance from the limiting ring to the end part of the cutter head.

3. The screwdriver according to claim 2, wherein the screwdriver is characterized in that: the shield is a transparent cover.

4. The screwdriver according to claim 2, wherein the screwdriver is characterized in that: the guard shield includes the support cover, a plurality of fretwork portions have been seted up on the support cover, and fretwork portion department is provided with the transparent plate.