CN2204241Y

CN2204241Y - Cross ruler

Info

Publication number: CN2204241Y
Application number: CN 94230107
Authority: CN
Inventors: 刘增涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-30
Filing date: 1994-08-30
Publication date: 1995-08-02
Anticipated expiration: 2004-08-30

Abstract

The utility model discloses a drawing ruler-a cross ruler which is composed of two straight rulers. One straight ruler is provided with a chute, and can be slid on the other straight ruler. The cross ruler is suitable for drawing a vertical line and a bisector. The straight ruler having no chute can be matched with a diameter ruler whose shaft point is fixed at the center of the circle of the graduation of a protractor engraved on the straight ruler. Various angles can be drawn by rotating the diameter ruler, and circular arcs with different radials can be drawn by sliding the pen on the diameter ruler. The simple drawing means of utility model is designed for unprofessional group, and has the advantages of multi-function and convenient operation.

Description

Cross ruler

The utility model relates to a kind of drawing rule, is the improvement to existing drawing rule.

In the drawing instrument that uses, the kind of chi is a lot of at present, all cooperates chart board to use on T-square and ruler, angle square etc. as the project planner; And amateur drawing personnel such as general clerical workforce and students in middle and primary schools mostly use common ruler, angle square to draw on desk or desk, generally are difficult to make the people handy with the chi of these occasional combinations.

The utility model is the simple and easy drawing instrument for the design of amateur colony such as common clerical workforce and primary and secondary students, more to reach function, easy to use purpose.

The utility model mainly by two rulers---basic chi and vernier are formed, is carved with graduation mark respectively on basic chi and the vernier.One chute vertical with blade arranged below vernier, and the cross section of chute is identical with the cross section of basic chi, and basic chi can be placed in the chute of vernier.Be about to basic chi and pin, vernier can keep being free to slide along basic chi in vertical with basic chi.When vernier slides into basic chi one end, promptly form T-square, what be different from common T-square is that the bottom surface of basic chi and vernier is in the same plane all the time, i.e. Cross ruler optional position translation on the table.

The utility model can also be drawn the circular arc of various angles and different radii with a footpath chi ligand chi except that cooperating the lines of drawing various vertical relations with basic chi and vernier.Be carved with the protractor scale on the surface of basic chi, the axle of footpath chi is put the circle centre position that is fixed on protractor, promptly the footpath chi is concentric with protractor, and the footpath chi can freely rotate around its axle point.The angle of footpath chi and basic chi can indicate on protractor.Pen in the penholder that slides on the chi of footpath can be drawn out the circular arc of different radii.

During drawing, often need to draw the camber line of vertical line, bisector, various angle and different radii, the utility model is very convenient for these application.

Below in conjunction with drawings and embodiments the utility model is described in further details:

Fig. 1 is the Cross ruler schematic diagram;

Fig. 2 is used schematic diagram for basic chi and footpath chi;

Fig. 3 is that basic chi cooperates the embodiment schematic diagram with vernier;

Fig. 4 is the connector schematic diagram;

Basic chi (1) and the vernier (2) of forming Cross ruler all are to have the ruler of measuring graduation mark.A chute vertical with blade (6) is arranged below the vernier (2), and the chute of embodiment (6) is rectangle with the cross section of basic chi (1), and such compound mode easy disassembling is easy to use.One end of base chi (1) has a plug that raises up (7), makes vernier can not skid off this end.The shape of plug (7) is consistent at the breach of this side with vernier, and promptly when forming T-square, plug (7) is combined into a complete outer surface with vernier (2).

There is the protractor scale on the surface of base chi (1), at the circle centre position of protractor a groove (8) is arranged, and the shape of groove (8) matches with the bottom of connector (4), and connector (4) can be embedded in the groove (8); A smaller part cylinder (9) concentric with protractor is arranged at the top of connector (4), and smaller part cylinder (9) matches with circumferential notch (10) on footpath chi (3).Footpath chi (3) can be enclosed within on the semicolumn (9) of connector (4), make footpath chi (3) concentric with protractor, and free to rotate, and footpath chi (3) is gone up also has a penholder that can slide (5), can be used to insert pen, the cross section of the chute on the penholder (5) is identical with the cross section of footpath chi (3).

The utility model is simple in structure, and is easy to use, and function is more, is to be fit to the popular simple and easy drawing instrument that uses.

Claims

1, a kind of Cross ruler, mainly by two rulers--basic chi (1) and vernier (2) are formed, on base chi and the vernier graduation mark is arranged respectively, it is characterized in that vernier (2) below a chute vertical with blade (6) is arranged, the cross section of chute is identical with the cross section of basic chi (1).

2, Cross ruler according to claim 1 is characterized in that the cross section of the chute (6) on the vernier (2) and the cross section of basic chi (1) are rectangle.

3, Cross ruler according to claim 1 and 2 is characterized in that an end of basic chi (1) has the plug (7) that raises up, and its shape is consistent at the breach of this side with vernier.

4, the Cross ruler of stating according to claim 1 newspaper is characterized in that there is the protractor scale on the surface of basic chi (1), in the circle centre position of protractor fluted (8); Footpath chi (3) and a connector (4) are arranged, and match with groove (8) on the protractor in the bottom of connector (4), and its top is a small semicircle cylinder (8), and this smaller part cylinder matches with circumferential notch (10) on the chi (3) directly.

5, Cross ruler according to claim 4 is characterized in that a penholder (5) is arranged on the described footpath chi (3), and the cross section of the chute on the penholder (5) is identical with the cross section of footpath chi (3).