CN203920155U - Blackboard Combined plotting instrument - Google Patents

Abstract

Blackboard composite plotter, includes rails, T-square for sliding horizontally along the rails, dial for sliding up and down the vertical rod of the T-square, dial locking handle for locking the dial, scale lock Tight handle, scale magnifying ruler, drawing template, the guide rail is installed above the blackboard; T-square includes a horizontal bar at the upper end and a vertical bar at the lower end, and the horizontal bar is installed in the corresponding chute of the guide rail through a rolling pulley. The moving track of the ruler covers the entire blackboard; the dial and the T-square are slidably connected, and the dial is locked with the T-square through the dial locking handle; one end of the scale is hinged on the dial. The scale locks the handle and the dial through the scale Locking; the graphic template is equipped with a graphic through-slot. The utility model has the beneficial effects of drawing standard straight lines at any angle, various regular polygonal figures and standard enlarged figures; simple and practical structure, low cost, convenient operation and wide application.

Description

blackboard integrated plotter

technical field

The utility model relates to a blackboard comprehensive plotter.

Background technique

Blackboard is the main classroom teaching tool generally used from elementary school to university at present. According to statistics, there are approximately 4.5575 million blackboards in the country, not counting the blackboards of enterprises and institutions.

In the teaching process of universities, middle schools and primary schools, teachers not only need to write words and formulas on the blackboard, but also need to draw pictures, such as various graphics in mathematics and geometry, various circuits and schematic diagrams in physics, various maps in geography, etc. . For regular graphics in graphics, such as polygons or circles, teachers can draw with the help of triangular boards or compasses, but for irregular graphics such as maps and various schematic diagrams, there are no tools available, and teachers often use chalk to draw manually. Not accurate enough and relatively slow.

Based on the above reasons, it is obviously necessary to design a comprehensive plotter so that teachers can draw accurate various graphics.

Contents of the invention

The utility model aims at the inaccurate, time-consuming and labor-intensive problems of freehand drawing on the current blackboard, and proposes a comprehensive blackboard plotter with accurate drawing, time-saving and labor-saving.

The integrated blackboard plotter described in the utility model is characterized in that it includes a guide rail, a T-square for sliding horizontally along the guide rail, a dial for sliding up and down along the vertical rod of the T-square, and a dial for locking the dial. Dial locking handle, scaling ruler locking handle, scaling ruler, drawing template, the guide rail is installed above the blackboard; the T-square includes a horizontal bar at the upper end and a vertical bar at the lower end, the The horizontal bar is installed in the corresponding chute of the guide rail through the rolling pulley, and the moving track of the T-square covers the entire blackboard; the dial is slidably connected with the T-square, and the dial passes through the dial The locking handle is locked with the T-square; one end of the scale magnifying ruler is hinged on the dial, and the scale magnifying ruler is locked with the dial through the scale locking handle; the graphic template is equipped with graphics The channel, the graphic channel is classified into templates according to mathematical graphics, geometric models, chemical graphics, geographic graphics, and biological graphics.

The guide rail is horizontally fixed above the blackboard, and its length is greater than that of the blackboard.

The guide rail is horizontally fixed above the blackboard, and its length is greater than the length of the blackboard by 100CM.

The scale enlargement ruler is a parallelogram hinge mechanism, and positioning holes are evenly arranged on the four connecting rods of the scale enlargement ruler.

The outer surface of the dial has a scale of 0° to 360°, and the dial is provided with a chute corresponding to the cross-sectional shape of the vertical rod of the T-square, and the dial passes through the chute and the T-square The vertical rod of the T-square is slidingly connected, and the dial slides up and down along the vertical rod of the T-square to any position in the height direction of the blackboard.

The dial locking handle is screwed to the dial, and the dial is locked at any position on the T-square through the dial locking handle.

The center of the dial is equipped with a pin shaft, and one end of the scale is hinged on the pin shaft of the dial.

The locking handle of the scaling scale is screwed to the center of the dial, and the scaling scaling scale is locked at any angular position of the dial through the locking handle of the scaling scale.

The back of the graphic template is equipped with four magnets for being adsorbed on the blackboard.

When in use, the user slides the T-square according to actual needs to determine the position of the T-square, and then slides up and down along the T-square to adjust the position of the dial. After adjustment, use the dial locking handle to lock the dial on the T-square. At any height position; since one end of the scale is hinged on the dial, it can rotate around the center of the dial for one circle. After adjusting the scale to a suitable position, lock the scale on the dial through the scale locking handle During the whole process, only through the sliding of the T-square and the dial and the rotation angle of the scaling ruler, the scaling ruler can be used as a straightedge to draw any angle at any position on the blackboard. Straight lines, so that regular geometric figures of various angles can be drawn. And when needing to draw some specific graphics, only need to lean against the profiling pen of scale in the graphic groove of graphic template, then move drawing pen and just can draw the amplified irregular figure similar to the graphic on the graphic template.

The beneficial effects of the utility model are:

(1) Able to draw standard straight lines at any angle and various regular polygonal figures at any position on the blackboard;

(2) The drawing template can be used to draw the standard enlarged graphics of all the graphics on the template;

(3) The device has the advantages of simple and practical structure, low cost, convenient operation and wide application.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Further illustrate the utility model below in conjunction with accompanying drawing

Referring to the attached picture:

The comprehensive blackboard plotter described in the utility model comprises a guide rail 1, a T-square 2 for sliding horizontally along the guide rail, a dial 3 for sliding up and down along the vertical rod of the T-square, and a scale for locking the dial Disc lock handle 4, scale lock handle 5, scale scale 6, graphic template 7, the guide rail 1 is installed above the blackboard 8; the T-square 2 includes a horizontal bar at the upper end and a The vertical bar, the horizontal bar is installed in the corresponding chute of the guide rail 1 through the rolling pulley, and the moving track of the T-square 2 covers the whole blackboard 8; the dial 3 and the T-square 2 Slidingly connected, the dial 3 is locked with the T-square 2 through the dial locking handle 4; one end of the scale 6 is hinged on the dial 3, and the scale 6 is locked by the scale lock The tight handle 5 is locked with the dial; the graphic template 7 is equipped with a graphic slot, and the graphic slot is used to make templates according to mathematical graphics, geometric models, chemical graphics, geographic graphics, and biological graphics.

Described guide rail 1 is horizontally fixed above the blackboard 8, and its length is greater than the length of the blackboard.

Described guide rail 1 is fixed on the top of blackboard 8 horizontally, and its length is greater than the length 100CM of blackboard.

The scale magnifying ruler 6 is a parallelogram hinge mechanism, and the positioning holes are evenly arranged on the 4 connecting rods of the scale scaling ruler.

The outer surface of the dial 3 has a scale of 0° to 360°, and the dial 3 is provided with a chute corresponding to the cross-sectional shape of the vertical bar of the T-square 2, and the dial 3 passes through the The groove is slidably connected with the vertical bar of the T-square 2, and the dial 3 slides up and down along the vertical bar of the T-square 2 to any position in the height direction of the blackboard 8.

The dial locking handle 4 is screwed to the dial 3 , and the dial 3 is locked at any position on the T-square 2 through the dial locking handle 4 .

The center of the dial 3 is equipped with a pin shaft, and one end of the scale 6 is hinged on the pin shaft of the dial 3 .

The scale locking handle 5 is screwed to the center of the dial 3 , and the scaling scale 6 is locked at any angular position of the dial 3 through the scale locking handle 5 .

The back side of the graphic template 7 is equipped with four magnets for being adsorbed on the blackboard.

When in use, the user slides the T-square 2 according to actual needs to determine the position of the T-square 2, and then slides up and down along the T-square 2 to adjust the position of the dial 3. After adjustment, use the dial locking handle 4 to lock the dial 3 Locked at any height position of the T-square 2; since one end of the scale 6 is hinged on the dial 3, it can rotate around the center of the dial 3 for one circle. After adjusting the scale 6 to a suitable position, pass The scale locking handle 5 locks the scale 6 at any angle position on the dial 3. During the whole process, only the sliding of the T-square 2 and the dial 3 and the rotation angle of the scaling scale 6 can be used to adjust the scale. The magnifying ruler 6 is used as a ruler and can draw a straight line at any angle at any position on the blackboard 8, so that regular geometric figures at various angles can be drawn. And when needing to draw some specific figures, only need the profiling pen of scale leans against in the figure groove of figure template 7, then move drawing pen and just can draw the enlarged irregular figure similar to figure on figure template 7.

The content described in the embodiments of this specification is only an enumeration of the realization forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms stated in the embodiments. The protection scope of the utility model also includes Equivalent technical means that those skilled in the art can think of according to the concept of the utility model.

Claims (9)

1. Blackboard integrated plotter, characterized in that it includes a guide rail, a T-square for sliding horizontally along the guide rail, a dial for sliding up and down along the vertical rod of the T-square, and a dial for locking the dial. Handle, scale magnifying ruler locking handle, scale magnifying ruler, drawing template, described guide rail is installed above the blackboard; Described T-square comprises the horizontal rod that is positioned at the upper end and the vertical rod that is positioned at the lower end, and described horizontal rod passes through The rolling pulley is installed in the corresponding chute of the guide rail, and the moving track of the T-square covers the entire blackboard; the dial is slidably connected with the T-square, and the dial is connected to the dial through the locking handle of the dial. The T-shaped ruler is locked; one end of the scale magnifying ruler is hinged on the dial, and the scale magnifying ruler is locked with the dial through the scale locking handle; The graphics channel described above is classified into templates according to mathematical graphics, geometric models, chemical graphics, geographic graphics, and biological graphics. 2. The comprehensive blackboard plotter as claimed in claim 1, characterized in that: said guide rail is horizontally fixed above the blackboard, and its length is longer than that of the blackboard. 3. The comprehensive blackboard plotter as claimed in claim 2, characterized in that: said guide rail is horizontally fixed above the blackboard, and its length is 100CM longer than that of the blackboard. 4. The comprehensive blackboard plotter as claimed in claim 3, characterized in that: the scale-enlarging ruler is a parallelogram hinge mechanism, and positioning holes are evenly arranged on the four connecting rods of the scale-enlarging scale. 5. The comprehensive blackboard plotter as claimed in claim 3, characterized in that: the outer surface of the dial has a scale of 0° to 360°, and the dial is provided with a vertical bar with a T-square A chute with a corresponding cross-sectional shape, the dial is slidably connected with the vertical bar of the T-square through the chute, and the dial slides up and down along the vertical bar of the T-square to any position in the height direction of the blackboard. 6. The integrated blackboard plotter as claimed in claim 5, characterized in that: the dial locking handle is screwed to the dial, and the dial is locked in the T shape by the dial locking handle. anywhere on the ruler. 7. The integrated blackboard plotter according to claim 6, characterized in that: the center of the dial is provided with a pin shaft, and one end of the scale magnifying ruler is hinged on the pin shaft of the dial. 8. The integrated blackboard plotter as claimed in claim 3, characterized in that: the locking handle of the scaling ruler is screwed to the center of the dial, and the scaling scaling ruler is locked by the locking handle of the scaling ruler. Tight at any angular position of the dial. 9. The comprehensive blackboard plotter as claimed in claim 1, characterized in that four magnets for being adsorbed on the blackboard are arranged on the back of the graphic template.