CN2583631Y

CN2583631Y - Level with vernier

Info

Publication number: CN2583631Y
Application number: CN 02286359
Authority: CN
Inventors: 傅强
Original assignee: NINGBO GREAT WALL PRECISION ROLL RULER MANUFACTURING Co Ltd
Current assignee: Changcheng Jinggong Industry Co., Ltd., Ningbo
Priority date: 2002-11-28
Filing date: 2002-11-28
Publication date: 2003-10-29
Anticipated expiration: 2012-11-28

Abstract

The utility model discloses a level with a vernier, which relates to a measuring instrument, particularly the technical field of the level with the vernier. The level with the vernier is designed in order to overcome a defect that the existing level with the vernier is easy to fall off from the level body. The utility model comprises a level body (1) and a vernier (2), wherein, two parallel chutes (3) are arranged on the level body (1). The vernier (2) is provided with a clamping foot (4) matched with the chute (3), and the vernier (2) can be embedded in the chute (3) through the clamping feet (4), and can be relatively slid and matched with the level body (1). A cross-section of the chute (3) is in a shape of a narrow upper side and a wide lower side. Two better proposals of the chute are a double dovetail groove and a reverse T-shaped groove. The utility model has the advantages of firm and reliable connection of the vernier and the level body and no falling off.

Description

A kind of surveyor's staff with vernier

Technical field

The utility model relates to a kind of survey instrument, especially a kind of technical field of the surveyor's staff with vernier.

Background technology

Surveyor's staff is the survey instrument a kind of commonly used in people's live and work, is usually used in occasions such as building operation, shipbuilding, mechanical installation, bridge and carpenter.The surveyor's staff of band vernier also has the distance of the point-to-point transmission that mensuration locatees and the functions such as central point of 2 lines determining to be located except that the function with mean level chi.The surveyor's staff of band vernier realizes that above-mentioned additional functionality is to realize by the vernier and the size scale on the chi body that are arranged on the chi body.Vernier is the parts that can slide along the chi body, in the prior art, as schematically shown in Figure 5, two card bases of vernier all be wedge shape and oblique in receive, and be embedded on the chi body two parallel grooves that are complementary with card base, thereby be clamped on the chi body.Though such design has realized the problem that vernier slides along the chi body, but, because of chute is wedge shape, bottom taper and peristome is roomy, thereby prevent that acting force that vernier and chi body come off from coming from the holding force of vernier card base fully, and vernier is generally working of plastics, and there is certain elasticity inevitably in it, therefore the problem that in use exists vernier to come off from the chi body easily.

Summary of the invention

Technical problem to be solved in the utility model is how to overcome the defective that the vernier of the surveyor's staff of existing band vernier comes off from the chi body easily.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the surveyor's staff of this kind band vernier, include chi body and vernier, two parallel chutes are arranged on the chi body, vernier has the card base that is complementary with described chute, described vernier is inlaid in the described chute by its card base and can be combined together slidably relatively with the chi body, and the xsect of described chute is up-narrow and down-wide shape.

The xsect of described chute can be double-swallow-tail shape, also can be inverse-T-shaped, and perhaps other are equal to shape.

Compared with prior art, advantage of the present utility model is because of having adopted up-narrow and down-wide chute of xsect and correspondingly card base, thereby vernier can vertically be free to slide along chute, and don't can deviate from chute.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A-A of the utility model embodiment one shown in Figure 1 is to cut-open view;

Fig. 3 is the cross sectional representation of chi body in the utility model embodiment one;

Fig. 4 is the cross sectional representation of chi body in the utility model embodiment two;

Fig. 5 is that the A-A of vernier and chi body cooperation place in the prior art is to cut-open view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment one

As Fig. 1～shown in Figure 3, be a preferred embodiment of the present utility model.As shown in Figure 1, two verniers 2 that the surveyor's staff of the band vernier in the present embodiment includes chi body 1 and is mounted thereon, the upper surface of chi body 1 is provided with two parallel double swallow tailed grooves 3 (referring to Fig. 3), one-body molded on the vernier 2 have a card base 4 (referring to Fig. 2) that is complementary with described double swallow tailed groove 3, and vernier 2 is inlaid in the described double swallow tailed groove 3 by its card base 4 and can be combined together slidably relatively with chi body 1.During installation, vernier 2 is filled in from the end of chi body 1 in the double swallow tailed groove 3 and is got final product.At this moment, vernier 2 just can only vertically be free to slide and don't can deviate from groove along double swallow tailed groove 3.Convenience in order to use when locating also respectively is provided with a fixed knob 5 on the vernier 2.In addition, also be provided with size scale 6 on the upper surface of chi body 1, the two ends of chi body 1 are fixed with end cap 7, are respectively arranged with horizontal bubble 8 and vertical bubble 9 near two ends in the chi body, and the back side of chi body 1 respectively is fixed with a powerful vacuum sucker (not shown) near the place, two ends.

Embodiment two

As shown in Figure 1 and Figure 4, be another preferred embodiment of the present utility model.

As shown in Figure 4, the surveyor's staff of the band vernier in the present embodiment is compared with the surveyor's staff of band vernier among the embodiment one, and its difference only is that the chute on the chi body 1 is two parallel inverse-T-shaped grooves 10 in the present embodiment.

Need to prove, though only exemplified above-mentioned two kinds of preferred versions in embodiment of the present utility model, be not the embodiment that eliminating in fact also has other, as " anchor " formula groove etc.As long as the xsect of groove has up-narrow and down-wide feature, even, all should be considered as protection domain of the present utility model as long as the part of xsect has up-narrow and down-wide feature.

Claims

1, a kind of surveyor's staff with vernier, include chi body (1) and vernier (2), two parallel chutes (3) are arranged on the chi body (1), vernier (2) has the card base (4) that is complementary with described chute (3), described vernier (2) is inlaid in the described chute (3) by its card base (4) and can be combined together slidably relatively with chi body (1), it is characterized in that the xsect of described chute (3) is up-narrow and down-wide shape.

2, the surveyor's staff of band vernier as claimed in claim 1 is characterized in that the xsect of described chute (3) is double-swallow-tail shape.

3, the surveyor's staff of band vernier as claimed in claim 1 is characterized in that the xsect of described chute (3) is inverse-T-shaped.

4,, it is characterized in that the back side of described chi body is fixed with two powerful vacuum suckers as the surveyor's staff of claim 1 or 2 or 3 described band verniers.