CN202572256U

CN202572256U - Screwdriver

Info

Publication number: CN202572256U
Application number: CN 201220236375
Authority: CN
Inventors: 李华
Original assignee: ZHANGJIAGANG YOUNIKE HARDWARE TOOLS CO Ltd
Current assignee: ZHANGJIAGANG YOUNIKE HARDWARE TOOLS CO Ltd
Priority date: 2012-05-24
Filing date: 2012-05-24
Publication date: 2012-12-05
Anticipated expiration: 2022-05-24

Abstract

The utility model discloses a screwdriver which can expand a force arm, can be operated in a very labor-saving way, and structurally comprises a holder and a screwdriver screwdriver bar which has a tail being arranged in the screwdriver holder, wherein the head part of the screwdriver bar is provided with a screwdriver head, and cross rod through holes are formed in the circumferential surface of the screwdriver holder. According to the screwdriver, the cross rod through holes are formed in the circumferential surface of the screwdriver holder, during the use process, a cross rod is inserted into the cross rod through holes, so that the force arm of the screwdriver is expanded through the cross rod, and the screwdriver can be operated in the very labor-saving way.

Description

A kind of screwdriver

Technical field

The utility model relates to a kind of screwdriver.

Background technology

In daily life, the usage frequency of screwdriver is very high.At present, traditional screwdriver, its structure generally includes: handle of a knife and one of which end are arranged on the knife bar in the handle of a knife, and the other end of knife bar is provided with a word cutter head or cross cutter head (being commonly called as the plum blossom cutter head).In use; When electrical equipment such as earth leakage protective device (being commonly called as air switch), A.C. contactor being carried out the wiring operation; Because the arm of force of conventional screw-driver in order is shorter,, can not twist the screw on the binding post very tight although made very big strength; Loose or dislocation and spark phenomenon often occur, influence the normal use of electrical equipment.

The utility model content

The utility model technical problem to be solved is: provide a kind of through expanding very labour-saving screwdriver of the feasible operation of the arm of force.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of screwdriver comprises: handle of a knife is arranged on the knife bar in the handle of a knife with its afterbody, and the head of knife bar is provided with cutter head, offers the cross bar through hole on the peripheral surface of said handle of a knife.

Described knife bar is detachable knife bar, and its concrete set-up mode is: offer the installing hole that matches with the afterbody of knife bar on the end face of the installation knife bar of said handle of a knife, handle of a knife is being provided with screw thread and is being provided with end cap through screw thread near knife bar one end.

Described mounting hole site is provided with subsequent use knife bar hole that at least one be used for built-in knife bar round installing hole in the central authorities of the end face of the installation knife bar of handle of a knife on the end face of the installation knife bar of handle of a knife.

Described subsequent use knife bar hole is at least two, circumferentially be evenly arranged in installing hole around.

Described subsequent use knife bar hole is four; Its structure is identical with installing hole; Comprise a circular hole and an a pair of word length hole that is positioned at the circular hole both sides, the angle between the center line in a word length hole in the center line in a word length hole of installing hole and subsequent use knife bar hole is between 30～60 °.

Be installed in the knife bar and the knife bar in the subsequent use knife bar hole in the installing hole; Has a knife bar at least; Its cutter head is a word cutter head, and the width of this word cutter head greater than its place knife bar diameter, its center line of said cross bar through hole upper edge offers an a pair of word length hole of matching with a word cutter head.

Offer the magnet installing hole concentric on the circumferential surface of said handle of a knife, be provided with the annular magnet that matches with the cross bar through hole in the magnet installing hole with the cross bar through hole.

Offer the magnet installing hole concentric on the circumferential surface of said handle of a knife, be provided with the arc-shaped magnet that a pair of and cross bar through hole matched, dodged a word length hole of cross bar through hole both sides in the magnet installing hole with the cross bar through hole.

The beneficial effect of the utility model is: the utility model during use, can insert the cross bar through hole through on the peripheral surface of handle of a knife, offering the cross bar through hole with cross bar, has expanded the arm of force of screwdriver through cross bar, makes operation very laborsaving; In addition; Knife bar and installing hole are the plug-in structure; Also built-in a plurality of subsequent use knife bars on the end face of the installation knife bar of handle of a knife, the head of these a plurality of subsequent use knife bars can be provided with the cutter head of variety classes (cross or a word), different size, thereby greatly facilitate the use of screwdriver; Be installed at the concentric magnet installing hole of cross bar through hole in magnet; The ferromagnetism cross bar that will insert in the cross bar through hole on the one hand holds, and prevents cross bar slippage from the cross bar through hole effectively, has made things convenient for the use of screwdriver; On the other hand; Also can the cutter head of knife rod head be rubbed on magnet, make cutter head band magnetic, the use of convenient screwdriver; In actual use; Its width is greater than a word cutter head of the diameter of knife bar or subsequent use knife bar; Use more smoothly; For this reason, its center line of cross bar through hole upper edge is offered an a pair of word length hole of matching with a word cutter head, make the knife bar that has a word cutter head can insert this cross bar through hole and serve as cross bar; Owing to can expand the arm of force through cross bar; Therefore, handle of a knife gets very thick with regard to it goes without doing, like this; For can be in handle of a knife built-in subsequent use knife bar; And subsequent use knife bar hole is with respect to the oblique layout of installing hole in the future, that is: the angle between the center line in a word length hole in the center line in a word length hole of installing hole and subsequent use knife bar hole so just makes that the layout in installing hole and subsequent use knife bar hole is compact more between 30～60 °.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation that has the knife bar of cross cutter head.

Fig. 3 is the structural representation that has the knife bar of a word cutter head.

Fig. 4 be among Fig. 1 handle of a knife look up structural representation.

Among Fig. 1 to Fig. 4: 1, handle of a knife, 10, the cross bar through hole, 11, installing hole, 12, subsequent use knife bar hole, 2, the knife bar of band cross cutter head, 21, the cross cutter head, 3,, 31, one word cutter head, 4, magnet, 5, end cap with the knife bar of a word cutter head.

The specific embodiment

Below in conjunction with accompanying drawing, describe the specific embodiments of the utility model in detail.

As shown in Figure 1, a kind of screwdriver comprises: handle of a knife 1 and its afterbody are arranged on the knife bar 2 of the band cross cutter head 21 in the handle of a knife 1 perhaps with the knife bar 3 of a word cutter head 31, offer cross bar through hole 10 on the peripheral surface of said handle of a knife 1.In the present embodiment; Described

knife bar

2 or 3 is detachable knife bar; Its concrete set-up mode is: offer the installing hole 11 that matches with the afterbody of

knife bar

2 or 3 and four on the end face of the installation knife bar of said handle of a knife 1 along installing hole 11 circumferential uniform subsequent use knife bar holes 12; Installing hole 11 has identical structure (degree of depth is different) with four subsequent use knife bar holes 12; Comprise a circular hole and an a pair of word length hole that is positioned at the circular hole both sides; Angle between the center line in the one word length hole in the center line in one word length hole of installing hole 11 and subsequent use knife bar hole 12 is between 30～60 °, and what select here is 45 °, and said handle of a knife 1 is being provided with screw thread and is being provided with end cap 5 through screw thread near knife bar one end; Offer the magnet installing hole concentric on the circumferential surface of said handle of a knife 1 with cross bar through hole 10; And be installed in the knife bar and the knife bar in the subsequent use knife bar hole in the installing hole 11; Has a knife bar 3 at least with a word cutter head 31; And the width of this word cutter head 31 is greater than the diameter of the knife bar 3 at its place; Adapt therewith, the cross bar through hole 10 of handle of a knife 1 offers the word length hole that afterbodys a pair of and

knife bar

2 or 3 match along its center line, is provided with the arc-shaped magnet 4 that a pair of and cross bar through hole 10 matched, dodged a word length hole of cross bar through hole 10 both sides in the magnet installing hole.

During use, can the knife bar 3 that be hidden in the knife bar that has cross cutter head 21 2 in the subsequent use knife bar hole 12 or have a word cutter head be inserted and serve as cross bar in the cross bar through holes 10 and widen the arm of force.

Claims

1. screwdriver comprises: handle of a knife is arranged on the knife bar in the handle of a knife with its afterbody, and the head of knife bar is provided with cutter head, it is characterized in that: offer the cross bar through hole on the peripheral surface of said handle of a knife.

2. screwdriver according to claim 1; It is characterized in that: described knife bar is detachable knife bar; Its concrete set-up mode is: offer the installing hole that matches with the afterbody of knife bar on the end face of the installation knife bar of said handle of a knife, handle of a knife is being provided with screw thread and is being provided with end cap through screw thread near knife bar one end.

3. screwdriver according to claim 2 is characterized in that: described mounting hole site is provided with subsequent use knife bar hole that at least one be used for built-in knife bar round installing hole in the central authorities of the end face of the installation knife bar of handle of a knife on the end face of the installation knife bar of handle of a knife.

4. screwdriver according to claim 3 is characterized in that: described subsequent use knife bar hole is at least two, circumferentially be evenly arranged in installing hole around.

5. screwdriver according to claim 4; It is characterized in that: described subsequent use knife bar hole is four; Its structure is identical with installing hole; Comprise a circular hole and an a pair of word length hole that is positioned at the circular hole both sides, the angle between the center line in a word length hole in the center line in a word length hole of installing hole and subsequent use knife bar hole is between 30～60 °.

6. screwdriver according to claim 3; It is characterized in that: be installed in the knife bar and the knife bar in the subsequent use knife bar hole in the installing hole; Has a knife bar at least; Its cutter head is a word cutter head, and the width of this word cutter head greater than its place knife bar diameter, its center line of said cross bar through hole upper edge offers an a pair of word length hole of matching with a word cutter head.

7. screwdriver according to claim 1 is characterized in that: offer the magnet installing hole concentric with the cross bar through hole on the circumferential surface of said handle of a knife, be provided with the annular magnet that matches with the cross bar through hole in the magnet installing hole.

8. screwdriver according to claim 6; It is characterized in that: offer the magnet installing hole concentric on the circumferential surface of said handle of a knife with the cross bar through hole; The cross bar through hole of handle of a knife offers an a pair of word length hole of matching with the afterbody of knife bar along its center line, is provided with the arc-shaped magnet that a pair of and cross bar through hole matched, dodged a word length hole of cross bar through hole both sides in the magnet installing hole.