CN2406221Y

CN2406221Y - Leveller

Info

Publication number: CN2406221Y
Application number: CN 99258676
Authority: CN
Inventors: 胡国锋
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-23
Filing date: 1999-12-23
Publication date: 2000-11-15
Anticipated expiration: 2009-12-23

Abstract

The utility model discloses a level bar, which comprises a shell which is provided with a top surface, a bottom surface and two sides. The center site of the top surface is provided with a viewing window in which a level bubble is horizontally arranged. The utility model is characterized in that the position of at least one side corresponding to the level bubble is provided with a viewing window, and the two viewing windows are not communicated. Edges of the junctures of the top surface and the sides of the shell are continuous, and thus the level bar has the advantages that bending strength is large, and the level bar is hard to break off.

Description

A kind of surveyor's staff

The utility model relates to the level of levelling, measuring vertical degree or degree of tilt, refers to utilize the filled liquid of part in the airtight container especially, thereby leaves the device of bubble, specifically a kind of surveyor's staff.

Existing surveyor's staff, housing generally adopt square tube, have oval shape form in the case top center, this form traverses whole case top at Width, and extends to the both sides of housing, has been horizontally disposed with air level in form, like this, all can observe air level from top and both sides.The surveyor's staff of this structure, weak at the form place, easily cause stress to concentrate and fractureed.

Some surveyor's staff is offered two circular forms again in the side of housing, in the form therein an air level is set vertically, and in another form, be obliquely installed an air level (commonly used is 45), air level then adopts square or cylindrical transparent plastic, and heart place has columniform reservoir compartment therein.Therefore its another shortcoming is that the air level materials are more, and is uneconomical.

The purpose of this utility model is the surveyor's staff that a kind of intensity height, non-frangibility will be provided.

Another purpose of the present utility model is to provide a kind of materials cost-saving low surveyor's staff.

The purpose of this utility model is achieved in that a kind of surveyor's staff, comprise housing, described housing has end face, bottom surface and two sides, the centre of described end face has form, be horizontally disposed with air level in the described form, it is characterized in that having form corresponding to the air level place at least on a side, described two forms are not communicated with at surface of shell.

Be not communicated with mutually at surface of shell owing to be used for observing the end face form and the side form of air level, the housing end face is continuous with the seamed edge of boundary, side, so the surveyor's staff bending strength is big, not frangibility.

Bubble in the air level is in the upper surface of liquid when measuring, observe in the side for convenience, guarantees simultaneously that windows area is as far as possible little and the bending strength of the chi of further improving the standard can become arch form with the top design of side form.Be preferably on two relative sides of surveyor's staff and all offer similar form, can arbitrarily place during use, be convenient to operation.

As further improvement of the utility model, also have two forms on the described side, be vertically arranged with air level in the form therein, and in another form, be tiltedly installed with air level.Like this as long as the bottom surface of surveyor's staff is lain on the tested surface, the levelness of the air level measurement plane by vertical setting is by the degree of tilt of the air level measurement plane that is obliquely installed.

Further improve as the utility model, air level is the thin-wall circular tube shape, is fixed in the corresponding form by support or sleeve pipe.This structure can be saved quantity of plastics, reduces manufacturing cost.

Below in conjunction with drawings and Examples the utility model is further improved.

Fig. 1 is the prior art constructions synoptic diagram.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is the amplification view of air level.

With reference to accompanying drawing, the surveyor's staff housing adopts aluminium alloy, the side's of being bar shaped, end face 4 and bottom surface 8 are narrow than side 9, the centre of described end face has oval shape form 2, be horizontally disposed with air level 3 in the described form 2, have arch form form 10 corresponding to air level 3 places on side 9, form 10 and form 2 are not communicated with at surface of shell.

Also have two circular forms on the described side, be vertically arranged with air level 11 in the form 1, and the inclination 45 is provided with air level 6 in another form.

Air level 11,6 usefulness transparent plastics are made the thin-wall circular tube that an end is opened, fill liquid in it, be inserted and secured on the diametrical position of sleeve pipe from the tube wall of circular casing 13, with the opening end sealing, sleeve pipe 13 pushed respectively in the form 1,10 by the angle requirement together with air level then.

Air level 3 also adopts thin-walled transparent plastic pipe, directly is fixed in the form 2 by support.

Put on nuclear degree 7 in side bottom, can also be used to measuring length.

Claims

1, a kind of surveyor's staff, comprise housing, described housing has end face (4), bottom surface (8) and two sides, the centre of described end face has form (2), be horizontally disposed with air level (3) in the described form, it is characterized in that going up in a side (9) at least locating to have form (10) corresponding to air level (3), described form (2) and form (10) are not communicated with at surface of shell.

2, surveyor's staff as claimed in claim 1 is characterized in that form (10) top of being offered on the described side is arch form.

3, surveyor's staff as claimed in claim 2 is characterized in that also having on the described side form (1), is vertically arranged with air level (11) in the described form (1).

4, surveyor's staff as claimed in claim 3 is characterized in that also having on the described side form (5), is tiltedly installed with air level (6) in the described form (5).

5,, it is characterized in that described air level (3,6,11) is the thin-wall circular tube shape, is fixed in the corresponding form by support or sleeve pipe as claim 3 or 4 described surveyor's staffs.