CN100372653C

CN100372653C - Insulation double head spanners

Info

Publication number: CN100372653C
Application number: CNB2004100948072A
Authority: CN
Inventors: 周少岐
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-02
Filing date: 2004-11-11
Publication date: 2008-03-05
Anticipated expiration: 2024-11-11
Also published as: CN1715001A

Abstract

The present invention relates to a manual tool, particularly to an insulating double-head spanner with good insulation function. The present invention comprises a spanner body (1) and an insulating layer (2), wherein the insulating layer (2) is covered on the outer surface of the spanner body (1); the spanner body (1) is composed of a left part (3) and a right part (4); the left part (3) is approximately in an L shape; a handle part (31) of the left part and a handle part (41) of the right part are correspondingly inserted in a staggered mode; the cross section of the handle part (31) of the left part and the cross section of the handle part (41) of the right part are isolated by an insulating layer (5) which is correspondingly in a Z shape. The double-head spanner of the present invention has the advantages of good insulation effect and simple structure.

Description

Insulation double head spanners

Technical field

The present invention relates to a kind of hand-operated tools, especially relate to a kind of insulation double head spanners with good insulation function.

Background technology

Existing spanner mostly is the metal surface, do not have insulating properties, when if the user uses it for charged occasion because of carelessness, one is careless slightly, user's accident that just gets shocked easily, therefore dangerous property during work can not be used for charged occasion with this spanner, makes the scope of application of spanner be subjected to very big restriction.Therefore it is that the Chinese utility model patent " Insulation spanner " of ZL02219913.6 (notification number is CN2544894Y) has then disclosed a kind of Insulation spanner that one patent No. is arranged, and it includes wrench body, and its outer surface in wrench body is provided with a layer insulating.The major advantage of this utility model is that it has certain insulating properties, yet, it is provided with insulating barrier because only being outer surface in wrench body, when we work under charged duty, if hand is run into the danger that the inside of wrench body also has electric shock, and an end that grasps this spanner when us is when carrying out work, hand touches the inwall of spanner working portion possibly, therefore use above-mentioned Insulation spanner also to have certain danger, the working portion of spanner is also wrapped with insulating materials, safe effect is also desirable, because the working face of working portion weares and teares easily, cause metal partly to expose, also cause the electric leakage accident easily.

Also having an application number is that one of them embodiment of Chinese invention patent " hand-held tool that metal and composite are made " of 99123501.0 (publication number is CN1294958Y) has disclosed a kind of like this double offset ring spanner, shown in Fig. 3～4, its metal material expose two ends that matrix 14 forms double offset ring spanners be closed circular in sting ring 17, expose matrix 14 at the interior link arm 171 of stinging ring 17 1 outsides extension thinner thickness, be shaped according to the double offset ring spanner form by cladding 12 materials, be coated on link arm 171 and in sting the ring 17 outer circumferential sides, and keep cladding 12 thickness with in to sting ring 17 contour, sting the outline shape of ring 17 in exposing, and coat the cladding 121 that one deck is all composite again at the outer circumferential side of cladding 12, such as cladding 12 are carbon fibre materials, and cladding 121 is glass fiber materials.Because stinging between the ring 17 in two is to link into an integrated entity by the cladding of being made by carbon fibre material 12, the handle portion that also is double offset ring spanner is made by carbon fibre material, therefore its intensity and hardness are all not as good as the height of common wrench, when we use this such double offset ring spanner work, the cladding of being made by carbon fibre material 12 can be subjected to the effect of a very big torsion, when we turn this spanner with bigger power, because cladding 12 its intensity and hardness that carbon fibre material is made are all not enough, so the cladding of stinging in two between the ring 17 12 can be easy to fracture, and in sting ring and 17 also be easy to from the cladding 12 of its all side, spin off, so this spanner can only bear less torsion, thereby limited the scope of application of this kind spanner.

So the structure of above-mentioned two kinds of Insulation spanners also needs to improve further.

Summary of the invention

Technical problem to be solved by this invention is to provide the insulation double head spanners that a kind of insulation effect is better, intensity is higher, simple in structure at above-mentioned prior art present situation

The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of insulation double head spanners, include wrench body, the outer surface of wrench body is coated with insulating barrier, it is characterized in that described wrench body is made up of left-half and right half part two parts, the handle portion of left-half and the handle portion of right half part all are " L " type substantially, and the handle portion correspondence of the handle portion of described left-half and right half part staggers and inserts, kept apart by insulating barrier between the section of the handle portion of described left-half and the handle portion of right half part, described insulating barrier is "  " shape accordingly.

The insulating barrier of the insulating barrier between the handle portion section of the handle portion of above-mentioned left-half and right half part and the outer surface of wrench body fuses, like this can be in the outer surface insulating barrier that covers wrench body, also finish between the handle portion section of the handle portion of left-half and right half part the work of insulating barrier is set, thereby simplified production process.

Section between the handle portion of above-mentioned left-half and the handle portion of right half part is at least 1/2nd of wrench body length overall along the length of spanner length direction, can make the combination between left-half and the right half part more firm like this, when firmly using this spanner, be difficult for making left-half and right half part to produce mutual mobile dislocation, and the damage spanner increases the service life.

In order to make this insulation double head spanners have the ability to work of multiple different function, the operate portions of above-mentioned left-half is a ratchet type, and the operate portions of right half part is common leatherhead type.Can certainly be that the above-mentioned left-half and the operate portions of right half part all are common leatherhead types.Can also be that the above-mentioned left-half and the operate portions of right half part all are ratchet types.

Compared with prior art, when we are used in charged following time of occasion with spanner of the present invention, because wrench body of the present invention is made up of left-half and right half part two parts, and having insulating barrier that they are isolated blocking-up between two parts handle portion section opens, therefore when we touch the inwall of spanner working portion, also can not produce the danger of electric shock, increase the insulating properties of this invention, use more safe and reliable.Also because the handle portion of the handle portion of left-half and right half part all is " L " type substantially, and the handle portion of its left-half and right half part is the same with existing common metal spanner to be metallic object, so its agent structure of this spanner is existing common metal spanner, therefore its integral intensity is suitable with existing metal spanner with hardness, so it also has the intensity and the hardness of original the sort of metal spanner in the insulating properties that increased spanner, and then widened the scope of application of this insulation double head spanners, and be somebody's turn to do the simple and practical of invention, the manufacturing also is easy to.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Fig. 3 is the structural representation of double offset ring spanner in the prior art;

Fig. 4 is the partial perspective cutaway view of double offset ring spanner in the prior art.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Shown in Fig. 1～2, be one embodiment of the present of invention, it includes wrench body 1, wrench body 1 is made up of left-half 3 and right half part 4 two parts, the operate portions 6 of left-half is a ratchet type, the operate portions 7 of right half part is common leatherhead type, each part is for becoming individuality separately, it generally is to be formed by steel plate punching moulding, the handle portion 31 of left-half is " L " type substantially, the handle portion 41 of right half part also is " L " type substantially, and left-half 3 and right half part 4 stagger and insert, thereby form wrench body 1, outer surface in wrench body 1 is coated with a layer insulating 2, and handle portion 31 at described left-half and right half part, keep apart with insulating barrier 5 between 41 section and the section, and this insulating barrier 5 is "  " shape, this is "  " shape insulating barrier 5 is to fuse with the insulating barrier 2 of the outer surface of wrench body 1 also, and the section between the handle portion 31 of the left-half of " L " type substantially and the handle portion 41 of right half part is at least 1/2nd of wrench body 1 length overall along the length of spanner length direction, is generally 2/3rds for good.Above-mentioned

insulating barrier

3,5 can be made by composite, as rubber, plastics or other insulating materials, generally is to be implemented in by technologies such as injection moulding, pressing molds to coat insulating

barrier

3,5 on the wrench body.

Insulation double head spanners of the present invention relatively is adapted at interior use of scope of safe low-voltage, and it meets the instructions for use of electrician's instrument fully.

Claims

1. insulation double head spanners, include wrench body (1), the outer surface of wrench body (1) is coated with insulating barrier (2), it is characterized in that described wrench body (1) is made up of left-half (3) and right half part (4) two parts, the handle portion (41) of handle portion of left-half (31) and right half part all is " L " type substantially, and handle portion (41) correspondence of handle portion of described left-half (31) and right half part staggers and inserts, kept apart by insulating barrier (5) between the section of the handle portion (41) of handle portion of described left-half (31) and right half part, described insulating barrier (5) is accordingly Shape.

2. insulation double head spanners according to claim 1 is characterized in that the insulating barrier (2) of insulating barrier (5) and the outer surface of wrench body (1) between handle portion (41) section of the handle portion (31) of described left-half and right half part fuses.

3. insulation double head spanners according to claim 1 is characterized in that the section between the handle portion (41) of the handle portion (31) of described left-half and right half part is at least 1/2nd of wrench body (1) length overall along the length of spanner length direction.

4. according to claim 1 or 2 or 3 described insulation double head spanners, it is characterized in that the operate portions (6) of described left-half is a ratchet type, the operate portions of right half part (7) is common leatherhead type.

5. according to claim 1 or 2 or 3 described insulation double head spanners, the operate portions (6,7) that it is characterized in that described left-half and right half part all is common leatherhead type.

6. according to claim 1 or 2 or 3 described insulation double head spanners, it is characterized in that the operate portions (6,7) of described left-half and right half part all is a ratchet type.