CN203818851U - Novel combined mechanism compass - Google Patents

Abstract

The utility model discloses a novel combined mechanism compass which comprises a sucking disc, a pointer sliding block, a compass supporting rod, connecting rods, two compass turning poles and a positioning sliding block, wherein the compass supporting rod, the pointer sliding block, the connecting rods, one compass turning pole and the positioning sliding block constitute an elliptical mechanism; the pointer sliding block, the positioning sliding block and the two compass turning poles constitute a parallel mechanism. The pointer sliding block slides along a sliding groove in the compass supporting rod and drives the compass turning poles and the connecting rods to rotate, and a radius can be determined according to scales on the compass supporting rod; at the same time, the two compass turning poles ensure that a paintbrush connected to the positioning sliding block is always perpendicular to a drawing plane; the sucking disc adsorbs a blackboard plane or a principal plane, and an angle can be determined according to an angle scale at the lower end of the compass supporting rod; the compass supporting rod is rotated around a rotating shaft at the upper end of the sucking disc to drive the paintbrush to draw a picture. According to the novel combined mechanism compass, the radius and the angle can be directly determined when a circle and an arc are drawn, the positioning is accurate, the structure is compact, the operation is convenient, and higher popularization and application values are realized.

Description

A new combination mechanism compasses

1. Technical field

The utility model relates to a compasses, in particular to a novel combination mechanism compasses which can directly determine the radius and angle.

2. Background technology

Compass is an important tool for daily learning and classroom teaching to draw circles and arcs. The widely used traditional compass is a "herringbone" shape structure, which is composed of two compasses legs, pins, pen caps and paint brushes. For the daily drawing of circles, arcs, equal circles, etc., traditional compasses are used for drawing. To determine the radius and angle of the arc, it must rely on auxiliary tools such as a ruler, a set square, and a protractor. The process is cumbersome and the drawing error is large. Inconvenient to use.

3. Contents of the invention

The technical problem to be solved by the utility model is to provide a new combination mechanism compass, which can directly determine the radius and angle, accurate positioning, compact structure, convenient operation, and great Promote application value.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a new composite mechanism compass, including a suction cup, a compass pole, a connecting rod, a pointer slider, a compass rotating rod, and a positioning slider, and is characterized in that: the suction cup The lower end is adsorbed to the drawing plane, and the upper end is provided with a rotating shaft. The upper end of the rotating shaft is connected with the lower end of the compass rod through a bearing. One side of the chute is provided with a size scale, one end of the double compass rotating rod is hinged with the pointer slider, and the other end is hinged with the positioning slider, and one end of the connecting rod is connected with the lower part of the compass rod and is located between the chute and the angle plate. The other end of the connecting rod is hinged with one of the double compasses rotating rods, and the lower end of the positioning slider is connected with a pen cover that can be installed with a paintbrush; the sliding of the pointer slider drives the movement of the double compasses rotating rod and the connecting rod, and presses The size scale value on the side of the chute indicated by the pointer slider determines the position of the positioning slider, and the compass rod is rotated around the rotation axis, and the brush installed on the positioning slider is driven by the compass rotating rod to realize the position according to the size scale value and angle disc. Sets the angle at which to draw the graph.

The elliptical mechanism is composed of the compasses pole, the pointer slider, the connecting rod, a compass rotating rod and the positioning slider.

The pointer slide block, the positioning slide block and the double compasses rotating rod form a parallel mechanism.

The suction cup (2) can be a compass pin.

Described compass rotating rod (7) is double compasses rotating rod or single compasses rotating rod.

The connecting rod can be a single connecting rod or a double connecting rod; one end of the double connecting rod is hinged to the lower part of the compass strut and is located between the chute and the angle plate, and the other end of the double connecting rod is hinged to the double compass rotating rod respectively.

The utility model has the advantages that the radius and angle can be directly determined when drawing circles and arcs, the positioning is accurate, the structure is compact, foldable, easy to operate, and has great popularization and application value.

4. Description of drawings

Fig. 1 is a structural schematic diagram of the first embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 3 is a schematic structural view of a third embodiment of the present invention.

Explanation of reference signs: 1-drawing plane; 2-suction cup; 3-compass rod; 4-connecting rod; 5-pointer slider; 6-screw; 7-compass rotating rod; 8-positioning slider; ; 10 - brushes.

5. Specific implementation

Example 1

As shown in Figure 1, the utility model comprises suction cup 2, compass pole 3, connecting rod 4, pointer slider 5, compass rotating rod 7 and positioning slider 8. The lower end of the suction cup 2 is adsorbed to the drawing plane 1, the upper end is provided with a rotating shaft, the upper end of the rotating shaft is connected with the lower end of the compass pole 3 through a bearing, and the lower end of the compass pole 3 is provided with an angle plate.

The middle and upper part of the compass pole 3 is provided with a chute for the pointer slider 5 to slide, one side of the chute is provided with a size scale, one end of the double compasses rotating rod 7 is hinged with the pointer slider 5, and the other end is connected with the positioning slider 8 Hinged, one end of the connecting rod 4 is hinged with the lower part of the compass rod 3 and is located between the chute and the angle plate, the other end of the connecting rod 4 is hinged with one of the double compasses rotating rods 7, and the lower end of the positioning slider 8 is connected There is the pen cover 9 that paintbrush 10 can be installed.

The working principle of the utility model is: loosen the screw 6, the pointer slider 5 slides along the chute on the compass pole 3, and drives the double compass rotating rod 7 to rotate, and then the compass rotating rod 7 drives the connecting rod 4 to rotate, and simultaneously drives the Positioning slide block 8 is positioned according to the size scale value of the chute one side indicated by pointer slide block 5, and guarantees that the paintbrush 10 installed on the pen cover 9 connected with positioning slide block 8 is perpendicular to drawing plane 1 all the time; Pointer slide block 5 When sliding to the specified scale size position, tighten the screw 6, the pointer slider 5, the compass rotating rod 7, the connecting rod 4, and the positioning slider 8 stop moving, and the distance from the center of the suction cup 2 to the center of the brush 10 is the scale size specified by the pointer slider 5 , which is the radius length. Adsorb the suction cup 2 to the center of the drawing plane 1, rotate the compass pole 3 around the suction cup 2 and according to the angle set at the lower end of the compass pole 3, and drive the pen holder 9 through the compass pole 7 and the positioning slider 8 to install Brush 10 draws graphics.

Example 2

As shown in Figure 2, the difference between this embodiment and Embodiment 1 is that a connecting rod 4 is added, the double connecting rods 4 are parallel, and one end is connected to the lower part of the compass rod 3 and is located between the chute and the angle plate respectively. Hinged, the other end is hinged with the double compasses rotating rod 7 respectively;

Example 3

As shown in Figure 3, the difference between this embodiment and Embodiment 1 is that a compass rotating rod 7 is removed, and the double compass rotating rod 7 is changed into a single compass rotating rod 7; the single compass rotating rod 7 and the positioning slider 8 adopt Screw connection; the connection relationship of other parts and parts is the same as that of embodiment 1.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (6)

1. novel combined mechanism compasses, comprise sucker (2), compasses pole (3), connecting rod (4), indicator slide block (5), compasses bull stick (7), positioning sliding block (8), it is characterized in that: adsorb mutually with drawing plane (1) lower end of sucker (2), upper end is provided with rotating shaft, rotating shaft upper end connects by bearing with the lower end of compasses pole (3), and the lower end of compasses pole (3) is provided with angle scale; The middle and upper part of compasses pole (3) is provided with the chute that can supply indicator slide block (5) to slide, chute one side is provided with size scale, one end of two compasses bull sticks (7) and indicator slide block (5) are hinged, the other end and positioning sliding block (8) are hinged, one end of connecting rod (4) and compasses pole (3) bottom and between chute and angle scale position be hinged, in the other end of connecting rod (4) and two compasses bull stick (7), a bar is hinged, and the lower end of positioning sliding block (8) is connected with the pen cap (9) that paintbrush (10) can be installed; The slip of indicator slide block (5) drives two compasses bull sticks (7), connecting rod (4) motion, and the size scale value of chute one side of indicating by indicator slide block (5) is determined the position of positioning sliding block (8), around rotating shaft, rotate compasses poles (3), by compasses bull stick (7), drive the upper paintbrush (10) of installing of positioning sliding block (8) can realize the angle arranging by size scale value and angle scale and draw circular.

2. according to novel combined mechanism compasses claimed in claim 1, it is characterized in that: described compasses pole (3), indicator slide block (5), connecting rod (4), a compasses bull stick (7), positioning sliding block (8) form elliptical mechanism.

3. according to novel combined mechanism compasses claimed in claim 1, it is characterized in that: described indicator slide block (5), positioning sliding block (8) and two compasses bull stick (7) form parallel mechanism.

4. according to novel combined mechanism compasses claimed in claim 1, it is characterized in that: described sucker (2) can be compass foot pin.

5. according to the novel combined mechanism compasses described in claim 1 or 2, it is characterized in that: described compasses bull stick (7) is two compasses bull sticks or single compasses bull stick.

6. according to the novel combined mechanism compasses described in claim 1 or 2 or 3, it is characterized in that: described connecting rod (4) can be monotroded bar or double link; The bottom of double link (4) one end and compasses pole (3) and between chute and angle scale position be hinged, double link (4) other end and two compasses bull sticks (7) are hinged respectively.