CN87205985U

CN87205985U - Drawing ruler with wheels

Info

Publication number: CN87205985U
Application number: CN 87205985
Authority: CN
Inventors: 胡企千
Original assignee: DONGFENG MEASURING TOOL PLANT GUANGZHOU CITY
Current assignee: DONGFENG MEASURING TOOL PLANT GUANGZHOU CITY
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1988-05-11

Abstract

The utility model discloses a drawing ruler with wheels, comprising wheels, a ruler body and a graduated scale; a guiding slot is transversally opened on the graduated scale; a slide block with a hole is embedded in the slot; under the condition of fixing a drawing ruler, horizontal parallel lines with any position and parallel lines with any position are drew on the drawing ruler through the traversing of the wheels. The utility model is in particular suitable for engineering drawing and drawing table.

Description

Drawing ruler with wheels

The utility model is a kind of drawing instrument, is specially adapted to paint parallel lines.

In Graphing of Engineering and drafting form, use set square and T-square usually at present, but use and carry all inconveniences.A kind of drawing rule that roller and rule are connected as a single entity is abroad arranged,, can on drawing rule, draw parallel lines, cooperate a row on the chi can insert the aperture of pen, the vertical parallel lines that can draw predetermined distance simultaneously when roller comes and goes when mobile.But when running into the vertical parallel lines that will draw the optional position, just must move ruler, aim at baseline again, this is inconvenient when drawing.

The utility model provides a kind of under the situation of not moving drawing rule, moves by coming and going of roller, can draw out the horizontal line and the vertical parallel lines of optional position on drawing rule.

The utility model is made up of chi body, rule and roller.Laterally have a gathering sill at rule, be embedded in a slide block with holes at groove, scale one side of gathering sill vertical section guiding ruler is a curved surface, opposite side is and acutangulate inclined-plane, bottom surface, slide block and gathering sill are for being slidingly matched, so a side of slide block is corresponding curved surface, opposite side is corresponding inclined-plane, and slide block moves around in gathering sill to reach the purpose of the vertical parallel lines of drawing the optional position.Hole on the slide block is a chamfered bore, after slide block is placed on required line drawing position, penholder is gone into hole, garden in the slide block, and compresses to the inclined-plane, because the pressure on the inclined-plane increases, friction is increased, and makes that slide block can not skid when painting vertical line.

In order to chart conveniently, in line drawing one side of rule the length scale is arranged, at the two ends of rule angle index is arranged, like this, can be with same straight line, parallel lines and the vertical line of drawing rule being drawn any direction.The roller of drawing rule can be one, also can be a pair of, in the time will improving the drawing rule cartographic accuracy, slots for one in the pair roller, and endoporus is the Cone hole, leads to axially fine setting diameter of Cone plug, to proofread and correct the depth of parallelism.The outer garden of roller can be a rubber layer, can be plastics, in order to keep the certain friction between roller and the paper.

The utility model is easy to use, and cost is low, is easy to carry.

Accompanying drawing is a concrete structure schematic diagram of the present utility model.

Fig. 1 is the vertical view of a roller type drawing rule.

Fig. 2 is the profile of Fig. 1 " A-A ".

Fig. 3 is the upward view of this roller type drawing rule.

This drawing rule has a rule (1), embeds a slide block (2) that has chamfered bore in the gathering sill of rule (1), and slide block (2) can move back and forth along the gathering sill of rule (1).Rule (1) is used the adhesive bonding connection with chi body (3), has a scale groove on the chi body (3), by the indication of the helix on the roller shaft (6) drawing rule displacement reading.Roller (8) and adjustable roller (5) are housed in the chi body (3), and roller (8) is connected with roller shaft (6) respectively with adjustable roller (5), by a pull bar (7) supporting,, and can rotate around axis its axial restraint by two spiral pins (9).Adjustable roller (5) Ke Tong Guo Cone plug (4) is adjusted diameter.

Claims

1, a kind of roller type drawing rule, include rule (1), chi body (3) and be contained in roller (8) and adjustable roller (5) in the chi body (3), roller (8) is connected with roller shaft (6) respectively with adjustable roller (5), support by a pull bar (7), by two spiral pins (9) to its axial restraint, and can rotate around axis, it is characterized in that laterally having a gathering sill at rule, be embedded in a slide block with holes (2) at groove.

2, roller type drawing rule according to claim 1 is characterized in that scale one side of the vertical section guiding ruler of rule gathering sill is a curved surface, and opposite side is and acutangulate inclined-plane, bottom surface.

3, roller type drawing rule according to claim 1 and 2 is characterized in that slide block one side is a curved surface, and a side is the inclined-plane, becomes to be slidingly matched with gathering sill.

4, according to claim 1 or 4 described roller type drawing rules, it is characterized in that there is rubber layer in the outer garden of roller.

5, roller type drawing rule according to claim 1 is characterized in that the hole on the slide block is a chamfered bore.

6, roller type drawing rule according to claim 1 is characterized in that line drawing one side of rule has the length scale, and there is angle index at the two ends of rule.