CN2135476Y

CN2135476Y - Multi-function drawing board with rolling wheel

Info

Publication number: CN2135476Y
Application number: CN 92236042
Authority: CN
Inventors: 阎恩贵
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-15
Filing date: 1992-10-15
Publication date: 1993-06-09
Anticipated expiration: 2002-10-15

Abstract

The utility model relates to a multi-function drawing board with a rolling wheel, relating to a plotter; the rolling wheel of the utility model is made of copper or steel, and the surface of the wheel is rolled with dentate knurling in 45 DEG; the rolling wheel is rotarily connected in a protective hood for matching with a shaft; the self weight of the rolling wheel is big, and the rolling wheel is not easy to slide on paper; thus the parallelism of the line drawing is high. The bottom of the board is designed with a plurality of semi-spheres whose height is a little lower than the height of the roller wheel that is bulged from the bottom; the frictional force of the board-paper is small, and the frequently and easily generated pollution because of using an ink pen can be prevented; the hole of a drawing pen core is quadrate, and the position of the pen point is stable; the board surface is added with a set square, a cloud shape curve hole, a symbol hole of the form and position tolerance, etc., and the plotting function is expanded.

Description

Multi-function drawing board with rolling wheel

The utility model relates to drawing board, relates in particular to drawing board or the multifunctional drawing board of drawing parallel lines.

In order to adapt to the needs of different purposes and different specialties, the drawing board that production is gone on the market (chi), it is various in style, and modal have: various profession symbol graphics templates such as ruler, set square, engineer's scale, spline, graphometer (protractor), flowchart symbol template, electrician and building.But, there is not a kind of drawing board in 600 square centimeters scope, to summarize whole graphical symbols, perhaps possess whole drawing functions.

In order to expand drawing function as far as possible, satisfy the needs of daily general drawing, often the non-professionality drawing board is shaped on to have and draws straight line, circle, decide multiple function such as angle radiation, be convenient to draw " the roller type multifunctional drawing board " of parallel lines.

Yet, these commercially available roller type multifunctional drawing boards, owing to there is some defective in design, so that cause troubles such as the lower and drawing of making dirty of drafting accuracy, it is analyzed as follows: 1. because roller is plastic products, light self-weight, and the indentation on the idler wheel surface be straight parallel linear do not have a sharp shuttle, so on paper unavoidably because of producing the result that slippage causes depth of parallelism difference; In addition because of rolling amount between the axle of roller and the positioning shaft hole is bigger, thereby strengthened plotting error; 2. the drawing board bottom surface is flat, and paper contacts with one-tenth face at the bottom of the plate, and this has not only increased the frictional force between paper and the plate, and more unavoidable because of ink infiltration chart board causes stain, perhaps the setting-out that the end is done makes smudgy; 3. pen plughole on the unit length groove and center of circle locating hole all are circular ports, because of pen core and center of circle locating shaft and circular hole gap all bigger, so the picture circle is difficult to guarantee precision; 4. cloudy shape line that plate is commonly used because of figure lacks and Tolerance Symbols in Shape and Relative Position hole etc., drawing function is lower.

The purpose of the utility model is: improve roller and figure plate structure, improve the accuracy of drawing; On the plate face, increase graphical symbol commonly used, the function of expansion drawing board.

The utility model has designed " multi-faceted engineering drawing plate " and " student uses drawing board " in order to satisfy engineers and technicians and student's needs respectively, and its specific design is as follows:

Two kinds of rollers that drawing board adopted of the present utility model; do with copper or steel; wheel face rolls the cylindricality wheel that has annular groove on the cylindricality wheel of 45 ° of profile of tooth annular knurls or the cylinder; above-mentioned rollers; be fixedly mounted on cylinder two ends that the length groove is arranged on the face; and be connected as a single entity; second wheel becomes to turn cooperation with axle; axle is stuck in the inverted U-channel of two end faces of protective cover with tight fit or the expansion method tightly is stuck in the circular hole of biend of protective cover or as shown in Figure 1; axle (1) is inserted axle sleeve (2); make and become to turn cooperation; the roller (3) that two grooves is had a length groove is contained in two ends of axle with tight fit; being associated with axle and the axle sleeve of roller, snap in the inverted U-channel that is fixed on the interior axle sleeve frame (4) of protective cover in the tight fit mode.Described protective cover is arc cover or the Jiong shape cover that is carved with line of reference.Because the deadweight of metal roller is heavier, wheel face has spine, so avoided the slippage of chart board on paper, the connection of string axle is rotated also more steady, so drawing board advances depth of parallelism height.

Inner edge in the drawing board bottom periphery, design has 4-8 the hemisphere face projection of evenly arranging, it highly is slightly smaller than the poor of roller radius and its axle center to bottom surface distance, so that drawing board is put on the shelf on paper abreast, like this, both reduced the frictional force between plate and the paper, recurrent trouble when having avoided effectively again drawing with ink.

Be centered close to band tip circular hole on the unit length groove to what draw circle usefulness instead with the square opening of the tip, the drawing pen nib is remained on the angle, minimizing is because of the influence of nib displacement to drawing and spending clearly, the small sircle hole in the center of circle, location is changed into the clear opening that diameter is not less than 6 millimeters, and an additional centration axis that becomes to be slidingly matched with positioning round orifice (referring to Fig. 2).This centration axis is made up of centering pin (7), footstock (8), lock nut (9), spring (10), centering pin is the cylindrical body that there is annular projection at an end point, middle part, it is contained in the inner chamber of hollow base with the spring that is enclosed within its top, lock nut and footstock bolt, lock nut all is equipped with the circular hole that becomes to be slidingly matched with centering pin with the footstock center, footstock lower cylindrical face becomes to be slidingly matched with the drawing board locating hole, and some equally distributed thorn shape projections are arranged on the footstock bottom surface.So centering accurately, a beat is little, drafting accuracy is high.

Multi-faceted engineering drawing plate according to the said structure design, its plate face design is as follows: end before the drawing board, the middle part is a graphometer, the left and right sides is respectively 30 ° and 45 ° of set squares, on four rectangular peripheries, be carved with metric system or English unit's length groove, n * 5mm and n * 1/4 at front and back unit length groove " groove on be equipped with the band small square hole on (slope) (n is not equal to zero integer) slightly; on the zero graduation line, have the center of circle locating hole that diameter is not less than 6mm; length groove inner edge has the Tolerance Symbols in Shape and Relative Position hole ahead of the curve, have cloud shape curved slot in arc cover two sides that roller is housed and back.

Student according to the said structure design uses drawing board, its plate face design is as follows: forward position and dual side-edge edge at drawing board have metric unit length groove, " have the square hole of the band tip (slope) on the groove of (n is not equal to zero integer); have the circular hole that diameter is not less than 6mm on zero graduation; in the design of the front portion of plate the graphometer of semicircular arc cylindrical void is arranged, have several to draw diameters be the circular hole of 1-10mm in the graphometer both sides in n * 5mm and n * 1/4.

Embodiment and effect:

Example: I have gone up by above-mentioned design and have made metal roller, drawing board, centration axis etc., and have been assembled into the multifunctional drawing board that has roller, push away drawing parallel lines with it.Its depth of parallelism height, good through the push pedal repeatedly of several points, line, the straight line repeatability of both allocations, at definite home position with select several paintbrush jacks, repeat the picture concentric circles.Drawn circle (week) person's handwriting repeatability is good, (during drawing, should wind on roller with paper slip, with the power of reducing friction).Draw with fountain pen,, inkiness paper accident does not take place because of drawing board leaves paper more than 2 millimeters.Above-mentioned effect explanation, the design of this drawing board is successful, has obtained expected result of the present invention.

Description of drawings:

Fig. 1 roller installation diagram, 1-axle wherein, 2-axle sleeve, 3-roller, 4-axle sleeve frame, 5-drawing board, 6-hemispherical projections.

Fig. 2 centration axis.7-centering pin wherein, 8-footstock, 9-lock nut, 10-spring.

The plate face design of the multi-faceted engineering drawing plate of Fig. 3.11-drawing board wherein, 12-arc cover, 13-center of circle locating hole.

The design of Fig. 4 student's engineering drawing plate plate face, 14-drawing board, 15-arc cover, 16-center of circle locating hole.

Claims

1, a kind of by axle, roller and have " the roller type multifunctional drawing board " that the drawing board that is carved with representation unit length groove and some figure or symbol of protective cover is formed.It is characterized in that: the roller that this roller type multifunctional drawing board is adopted, do with copper or steel, wheel face rolls face and rolls the cylindricality wheel that has annular groove on the cylindricality wheel of 45 ° of profile of tooth annular knurls or the cylinder, above-mentioned rollers is fixedly mounted on cylinder two ends that the length groove is arranged on the face, and be connected as a single entity, two rollers become to turn cooperation with axle, axle is stuck in tight fit in the inverted U-channel of two end faces of protective cover or in the circular hole, after perhaps being inserted in axle in the axle sleeve, with tight fit roller is contained in axle two ends again, axle sleeve is stuck in the inverted U-channel that is fixed on protective cover internal axle sleeve frame with tight fit, on the drawing board bottom surface, design has a 4-8 hemisphere face projection of evenly arranging, its highly be slightly smaller than the roller radius to the bottom surface apart from poor; Perforate on the drawing board length groove is the foursquare band tip (slope) through hole, and the center of circle locating hole on zero groove is the straight circular hole that diameter is not less than 6mm, and protective cover is arc cover or Jiong shape cover.

2, the multifunctional drawing board of band roller according to claim 1, it is characterized in that: according to the multi-faceted engineering drawing plate of said structure design, its plate face design is as follows: end before the drawing board, the middle part is respectively 30 ° and 45 ° of set squares for graphometer, the left and right sides, on four rectangular peripheries, be carved with metric system or English unit's length groove, in the n * 5mm and n * 1/4 of front and back unit length groove " groove on be equipped with the band small square hole on (slope) (n is not equal to zero integer) slightly; On the zero graduation line, have diameter and be not less than the center of circle locating hole of 6mm; Length groove inner edge has the Tolerance Symbols in Shape and Relative Position hole ahead of the curve; Have cloud shape curved slot in arc cover two sides that roller is housed and back.

3, the multifunctional drawing board of band roller according to claim 1, it is characterized in that: the student according to the said structure design uses drawing board, its plate face design is as follows: forward position and dual side-edge edge at drawing board have metric unit length groove, " have the square hole of the band tip (slope) on the groove of (n is not equal to zero integer); have the circular hole that diameter is not less than 6mm on zero graduation; in the design of the front portion of plate the graphometer of semicircular arc cylindrical void is arranged, have several to draw diameters be the circular hole of 1-10mm in the graphometer both sides in n * 5mm and n * 1/4.

4, according to the multifunctional drawing board of claim 1 or 2 or 3 described band rollers, it is characterized in that: describedly decide sired results tool centration axis by centering pin (7), footstock (8).Lock nut (9), spring (10) are formed, centering pin is the cylindrical body that there is annular projection at an end point, middle part, it is contained in the inner chamber of hollow base with the spring that is enclosed within its top, lock nut and footstock bolt, lock nut all is equipped with the circular hole that becomes to be slidingly matched with centering pin with the footstock center, footstock lower cylindrical face becomes to be slidingly matched with the drawing board locating hole, and some equally distributed thorn shape projections are arranged on the footstock bottom surface.So centering accurately, a beat is little, the drafting accuracy height.