CN219312389U - a combination ruler - Google Patents

Abstract

The utility model discloses a combined ruler which comprises a main ruler plate and an arc-shaped plate fixedly arranged on one side edge of the main ruler plate, wherein a scale mark and an angle mark are respectively arranged on the main ruler plate and the arc-shaped plate, and a sliding groove is formed in the main ruler plate. According to the utility model, the scale marks on the main scale plate are utilized to draw a straight line, the angle marks on the arc plate are utilized to draw angles, meanwhile, the gap between the arc plate and the main scale plate is convenient for grasping the main scale plate, the rotating block axially rotates and is arranged in the through hole of the main scale plate near the first end, the rotating block is utilized as a center point, the rotating block is fixed, the main scale plate is swung to draw a round shape through the chalk inserted in the sliding block slot, the distance from the sliding block to the rotating block is the radius of the center, the distance from the sliding block to the rotating block is adjusted to adjust the round shape, and further, the drawing of the graph is facilitated for teachers through the design of integrating multiple functions.

Description

a combination ruler

technical field

The utility model relates to the technical field of rulers, in particular to a combined ruler.

Background technique

Rulers such as rulers, compasses, and protractors are used as auxiliary tools for mathematics teaching, so that teachers can draw circles, straight lines, and triangles.

Most of the currently used rulers are single types of individuals, so teachers need to take rulers, compasses, and protractors separately when carrying them. A single ruler is not only inconvenient to carry, but also inconvenient to store.

Utility model content

The purpose of the utility model is to provide a combination ruler, which can realize the drawing of straight lines, angles and circles, and the integrated design is convenient for carrying and storing.

In order to achieve the above object, the utility model provides the following technical solutions: a combined ruler, including a main ruler plate and an arc-shaped plate fixedly installed on one side of the main ruler plate, and the main ruler plate and the arc-shaped plate are respectively set There are scale marks and angle marks, a chute is opened on the main ruler plate, a slider is slid in the chute, and a slot for inserting chalk is opened on the slider, and the main ruler plate is close to the first The outer wall of the end is provided with a perforation, and a rotating block is provided for axial rotation in the perforation.

Preferably, the outer wall of the main scale plate on one side of the chute is provided with a circular radius mark.

Preferably, a plurality of elastic pieces are fixedly installed in the slot.

Preferably, fastening rods are symmetrically slidably arranged on the slider, main springs are respectively fixedly mounted on the fastening rods, and the first ends of the fastening rods are attached to the inner walls of the chute respectively.

Preferably, a non-slip rubber pad is fixedly installed on the first end of the rotating block.

Preferably, the main scale plate is a transparent plastic plate.

In the above technical solution, a combination ruler provided by the utility model has the following beneficial effects: by using the scale mark on the main ruler plate to draw a straight line, the angle mark on the arc-shaped plate is used to realize the angle Drawing, at the same time, the gap between the arc plate and the main scale plate is convenient for grasping and taking the main scale plate, and the rotating block set by the axial rotation of the main scale plate close to the first end perforation, using the rotating block as the center point, Fix the rotating block and swing the main scale plate to draw a circle through the chalk inserted in the slot of the slider, and the distance from the slider to the rotating block is the radius of the center of the circle, and then through the integrated design of multiple functions to help The teacher draws graphics and is easy to carry.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. For some embodiments described, those skilled in the art can also obtain other drawings according to these drawings.

Fig. 1 is the overall structure schematic diagram that the utility model embodiment provides;

Fig. 2 is a partial structural schematic diagram provided by the embodiment of the utility model;

Fig. 3 is a schematic diagram of the cross-sectional structure of the slider provided by the embodiment of the present invention.

Explanation of reference signs:

1. Main ruler plate; 2. Rotating block; 3. Slider block; 4. Arc plate; 11. Scale mark; 12. Chute; 13. Circular radius mark; 21. Non-slip rubber pad; 31. Slot; 32, elastic sheet; 33, fastening rod; 34, main spring; 41, angle mark.

Detailed ways

In order to make those skilled in the art better understand the technical solution of the utility model, the utility model will be further introduced in detail below in conjunction with the accompanying drawings.

As shown in Figure 1-3, a combined ruler includes a main ruler plate 1 and an arc-shaped plate 4 fixedly installed on one side of the main ruler plate 1. There are scales on the main ruler plate 1 and the arc-shaped plate 4 respectively. Mark 11 and angle mark 41, a chute 12 is provided on the main ruler plate 1, a slider 3 is slidably arranged in the chute 12, and a slot 31 for inserting chalk is provided on the slider 3, and the main ruler plate 1 is close to the second The outer wall at one end is provided with a perforation, and a rotating block 2 is provided for axial rotation in the perforation. By using the scale mark 11 on the main scale plate 1 to draw the straight line, the angle mark 41 on the arc plate 4 is used to realize the drawing of the angle, and the gap between the arc plate 4 and the main scale plate 1 is convenient. Grasp and take the main scale plate 1, and pass the rotating block 2 installed in the axial rotation of the main scale plate 1 close to the first end of the perforation, so as to use the rotating block 2 as the center point, fix the rotating block 2 and swing the main scale plate 1 to pass The chalk plugged in the slide block 3 slot 31 draws a circle, and the distance from the slide block 3 to the rotating block 2 is the radius of the center of circle, adjust the distance from the slide block 3 to the rotating block 2 to adjust the size of the circle, and then Through the integrated design of multiple functions, it can help teachers draw graphics and is easy to carry.

As shown in Figure 1, as a further technical solution provided by the present invention, in order to accurately obtain the distance from the slider 3 to the rotating block 2, the outer wall of the main scale plate 1 located on the side of the chute 12 is provided with a circular radius mark 13, By comparing the circle radius mark 13 to adjust the radius of the drawn circle.

Further, in order to quickly fix the chalk in the slot 31, a plurality of elastic sheets 32 are fixedly installed in the slot 31. When the chalk is inserted in the slot 31, the chalk squeezes the elastic sheet 32 at this time, and the chalk is elastically The elasticity of the sheet 32 secures the chalk with compression.

Further, in order to be able to fix the position of the slider 3 in the chute 12, the slider 3 is symmetrically slidably provided with fastening rods 33, and the main springs 34 are respectively fixedly installed on the fastening rods 33, the first of the main springs 34 fixedly mounted on the slider 3, the first ends of the fastening rods 33 are attached to the inner wall of the chute 12 respectively, and the first ends of the two fastening rods 33 are respectively attached to the inner wall of the chute 12 to To make the slider 3 stable in the chute 12, when it is necessary to adjust the position of the slider 3 in the chute 12, press the second end of the fastening rod 33 at the same time to make the fastening rod 33 slide and the fastening rod 33 First end breaks away from chute 12 inner walls respectively, now slide block 3 can move, unclamp fastening rod 33 after adjusting, now slide block 3 is fixed in the push-down position of main spring 34.

Specifically, a non-slip rubber pad 21 is fixedly installed on the first end of the rotating block 2 , and the sliding of the rotating block 2 is reduced by using the anti-slip rubber pad 21 .

More specifically, the main ruler plate 1 is a transparent plastic plate.

Working principle: When it is necessary to draw a straight line and an angle, use the scale mark 11 on the main scale plate 1 to draw the straight line, and use the angle mark 41 on the arc plate 4 to realize the drawing of the angle, and at the same time the arc plate 4 The gap between the main scale plate 1 is easy to grasp and take the main scale plate 1. By pressing the second end of the fastening rod 33 at the same time, the fastening rod 33 is slid and the first ends of the fastening rod 33 are disengaged respectively. On the inner wall of the chute 12, the slider 3 can move with reference to the circular radius mark 13 to adjust the length of the drawn circular radius. After the adjustment is completed, the fastening rod 33 is released, and the main spring 34 pushes the fastening rod respectively. 33. Use the first ends of the two fastening rods 33 to fit on the inner wall of the chute 12 to stabilize the slider 3 in the chute 12, and insert the chalk into the slot 31. At this time, the chalk is on the elastic sheet 32 Squeeze and fix the chalk under the elasticity, turn over the main scale plate 1 so that the side of the non-slip rubber pad 21 is attached to the blackboard, at this time, press the second end of the rotating block 2 with your fingers to fix the rotating block 2 on the blackboard, Swing the main scale plate 1 to draw a circle through the chalk plugged in the slot 31 of the slider 3, adjust the distance from the slider 3 to the rotating block 2 to adjust the size of the circle, and then through the integrated design of multiple functions , to help teachers draw graphics, and easy to carry.

Some exemplary embodiments of the present utility model have been described above only by way of illustration. Undoubtedly, for those skilled in the art, without departing from the spirit and scope of the present utility model, various Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims (6)

1. A combined chi tool is characterized in that it comprises a main chi plate (1) and an arc-shaped plate (4) fixedly installed on one side of the main chi plate (1), the main chi plate (1) and the arc Scale marks (11) and angle marks (41) are provided on the shaped plate (4), respectively, and a chute (12) is provided on the main ruler plate (1), and a sliding chute (12) is provided for sliding in the chute (12). block (3), and the slide block (3) is provided with a slot (31) for inserting chalk, and the outer wall of the main scale plate (1) near the first end is provided with a perforation, and the axial rotation in the perforation is provided with a Turn the block (2). 2. A combined ruler according to claim 1, characterized in that a circular radius mark (13) is provided on the outer wall of the main ruler plate (1) on one side of the chute (12). 3. A combination ruler according to claim 1, characterized in that, a plurality of elastic pieces (32) are fixedly installed in the slot (31). 4. A combined ruler tool according to claim 1, characterized in that fastening rods (33) are arranged on the slider (3) for symmetrical sliding, and the fastening rods (33) are respectively fixedly installed There is a main spring (34), and the first ends of the fastening rods (33) are attached to the inner wall of the slide groove (12). 5. A combined ruler according to claim 1, characterized in that, a non-slip rubber pad (21) is fixedly installed on the first end of the rotating block (2). 6. A combined ruler according to claim 1, characterized in that the main ruler (1) is a transparent plastic plate.

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