CN2535766Y

CN2535766Y - Steel tape

Info

Publication number: CN2535766Y
Application number: CN 02217173
Authority: CN
Inventors: 沈建明; 罗杰文
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-28
Filing date: 2002-04-28
Publication date: 2003-02-12
Anticipated expiration: 2012-04-28

Abstract

The utility model relates to the technical field of a measuring tape which is designed and developed for convenient use comprising a shell body, a tape core, a spiral spring, a tape belt, a caging knob and a screw, wherein the tape core is arranged in the shell body, and the tape belt is winded on the tape core, then the spiral spring is connected between the tape core and the shell body, further a locking mechanism which is used to lock the tape belt is arranged on the shell body. The utility model is characterized in that a fixing structure which is used to clamp a magnetic block is disposed on the side surface of the shell body dividing the shell body into an upper shell body and a lower shell body, and a groove which is inlayed with the magnetic block is opened on the side portion of the upper and lower shell body, then an up and down formed convex portion which is used to fasten the magnetic block is arranged on the opening of the groove, further after the magnetic block is inserted in the groove, the upper shell body and the lower shell body are connected together and are fixed by a screw. The utility model has the advantages of convenient use, fastened magnetic block installation and low manufacturing cost, further the utility model is applicable in measuring tape.

Description

Steel tape

Technical field

The utility model relates to a kind of technical field of chi tool steel tape.

Background technology

Existing steel tape is made up of housing, chi core, wind spring, chi band, lock knob, screw etc., and volume is little, uses flexibly, its weak point is because people often will frequently use in large quantities, just be placed on after some people uses up in the pocket, when using next time, draw out again and measure, access times are many just to seem inconvenient, just put aside conveniently after human is also arranged, when using, look for steel tape again to next time, often will spend some times seeks, also quite inconvenience.There are scientific and technical personnel that old steel tape is improved for this reason, it as China Patent No. 99250557 magnetic force steel tape, it be exactly in the shell of common steel tape the position near the outside and bottom increased by two strip magnets respectively, its advantage is simple in structure, fabrication and installation are convenient, two ends have magnetic, use by metal object one people and just can finish measurement, and its progressive meaning is arranged, on the other hand because strip magnet also is equipped with in its bottom, make its overall dimensions become big, chi band hook is very long, and profile is not attractive in appearance, and its magnetic patch is owing to be to be bumped into, it is not firm to install, and the time one is long, splits away off easily, so structure is unreasonable, magnetic patch adopts two, and cost just gets on, and volume is also bigger than normal easily.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of steel tape at prior art, it can utilize the magnetic principle steel tape to be fixed on the metal surface of magnetic conduction, prevent that people from will repeatedly draw tape measure or seek the inconvenience that steel tape brings in pocket, and rational in infrastructure, make easily.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this kind steel tape, it includes housing and chi core, wind spring, the chi band, cage knob, screw, be mounted with the chi core in the housing, be tied with the chi band on the chi core, be connected with wind spring in the middle of chi core and the housing, the arrestment mechanism that locking chi band is arranged on the housing simultaneously, it is characterized in that the fixed sturcture that folds up magnetic patch being arranged in the side of housing, its structure is that housing is divided into upper shell and lower house, on, the sidepiece of lower house has the groove of inlaying magnetic patch, and the peristome of groove forms the protuberance that blocks magnetic patch up and down, in groove, insert magnetic patch after, to go up, lower house is screwed altogether.

Both sides serve as a contrast into magnetic conduction sheet in the above-mentioned groove, and the magnetic conduction sheet upper and lower end has the breach that blocks for the groove protuberance, and center section is an evagination, and is straight with the housing sidepiece.

Above-mentioned groove liner is gone into magnetic conduction sheet, and the magnetic conduction sheet upper and lower end has the breach that blocks for the groove protuberance, and center section is an evagination, and links into an integrated entity by the coupling part, and the coupling part is outside straight with housing.

Compared with prior art, advantage of the present utility model is: structure is more reasonable, and is easy to manufacture and use, its with groove design at sidepiece, rather than simultaneously at bottom and sidepiece, some drawbacks of avoiding bottom slot to bring increase as volume, the chi hook is very big, not attractive in appearance, can reduce the magnetic patch number of using simultaneously, reduce cost, adopt groove to add the protuberance design, avoided only relying on and inlayed the insecure defective that fixing magnetic patch brings, structure is simple again, and cost increases seldom, and set up magnetic conduction sheet, reduce the magnetic resistance that air brings, given full play of the suction of magnetic patch, can hold the magnetic conductive metal object surfaces, can not come off easily, and flat appearance is attractive in appearance.

Description of drawings

The front view of Fig. 1 steel tape;

The side view of Fig. 2 steel tape;

The structural representation of Fig. 3 steel tape housing;

The front view of Fig. 4 magnetic conduction sheet;

The side view of Fig. 5 magnetic conduction sheet;

The another kind of stereographic map of Fig. 6 magnetic conduction sheet.

Embodiment

Below in conjunction with description of drawings embodiment of the present utility model is described in further detail.

Embodiment 1, as Fig. 1-5 signal, this kind steel tape, it includes parts such as housing 1 and chi core, wind spring, chi band, cage knob, screw, newel is arranged in the middle of the housing, on be with the chi core, be tied with the chi band on the chi core circumferential groove, be connected with wind spring between the newel in the middle of chi core and the housing, wind spring also is enclosed within the circumference cavity of chi core the inside, and the arrestment mechanism of locking chi band is arranged on the housing simultaneously, and concrete tape blade braking mechanism can be varied, described above is traditional general steel tape structure, describes in detail with regard to no longer launching here.Its inventive point is that there is the fixed sturcture that folds up magnetic patch the side of housing 1, its structure is that housing 1 is divided into upper shell and lower house, and adopt injection molding to form, on, the sidepiece of lower house has the groove 4 of inlaying magnetic patch, the groove rectangularity, the peristome of groove 4 forms the protuberance 5 that blocks magnetic patch up and down, lining is gone into a magnetic conduction sheet 3 earlier in groove, magnetic conduction sheet can adopt ferrous material to make, on the magnetic conduction sheet, the lower end has the breach 6 that blocks for the groove protuberance, center section is an evagination, straight with the housing sidepiece, after inserting long strip type magnetic patch 2, serve as a contrast the magnetic conduction sheet of a same size then again, utilizing up and down, magnetic conduction sheet is clipped in the middle middle magnetic patch, to go up then, lower house is fixed just passable altogether with screw-driving at screw place, the bight of housing.Because this magnetic patch 2 is long strip types, so its end face is a little lower than shell 1 end face, there is a small gap, if do not add magnetic conduction sheet 3, then magnetic resistance is very big, the magnetic force of magnetic patch descends many, and this will cause the magnetic force steel tape closely to inhale difficulty mutually with outer metal objects, so we are provided with magnetic conduction sheet, utilize this two convex magnetic conduction sheets, can clamp magnetic patch on the one hand, the magnetic force of magnetic patch can be derived again on the other hand, if do not consider cost, magnetic patch can directly be processed into the convex magnetic patch with neodymium iron boron, just can save magnetic conduction sheet, but neodymium iron boron is too expensive, uses its cost of products too high, lack competitiveness, magnetic patch in the present embodiment is to be made by ferrite, because ferrite is cheap, but its shortcoming is a processing fragile, therefore we only make long strip type to it, with two magnetic conduction sheets magnetic force is derived again, can effectively reduce the magnetic resistance of magnet and metal object surface, increase magnetic strength.Measure occasion at some magnetic conductive metal objects, after the user of service uses steel tape to measure, need not steel tape put in the pocket and go, as long as just can fix steel tape like a cork on the metal object surface near being placed on, it is handy to use.

Embodiment 2, as schematically shown in Figure 6, its magnetic conduction sheet structure changes upper and lower end into and has the breach 6 that blocks for the groove protuberance, center section is an evagination, and link into an integrated entity by coupling part 7, coupling part 7 is outside straight with housing, need only the magnetic patch of in the cavity in the middle of the magnetic conduction sheet, packing into during installation, and then with magnetic conduction sheet in magnetic patch is put into the groove of lower house, upper shell again closes, the screw place is fixed with screw-driving in the bight of housing, and other just no longer launches to be described as embodiment 1 here.

Claims

1, a kind of steel tape, it includes housing and chi core, wind spring, the chi band, cage knob, screw, be mounted with the chi core in the housing, be tied with the chi band on the chi core, be connected with wind spring in the middle of chi core and the housing, the arrestment mechanism that locking chi band is arranged on the housing simultaneously, it is characterized in that the fixed sturcture that folds up magnetic patch being arranged in the side of housing (1), its structure is that housing (1) is divided into upper shell and lower house, on, the sidepiece of lower house has the groove (4) of inlaying magnetic patch, and the peristome of groove forms the protuberance (5) that blocks magnetic patch up and down, in groove, insert magnetic patch (2) after, to go up, lower house is screwed altogether.

2, steel tape according to claim 1 is characterized in that the interior both sides of described groove (4) serve as a contrast into magnetic conduction sheet (3), and the magnetic conduction sheet upper and lower end has the breach (6) that blocks for the groove protuberance, and center section is an evagination, and is straight with the housing sidepiece.

3, steel tape according to claim 1, it is characterized in that described groove (4) liner goes into magnetic conduction sheet, the magnetic conduction sheet upper and lower end has the breach (6) that blocks for the groove protuberance, and center section is an evagination, and link into an integrated entity by coupling part (7), the coupling part is outside straight with housing.