CN203792977U - Ruler capable of being used as compass - Google Patents

Abstract

The utility model discloses a ruler capable of being used as a compass. The ruler comprises a ruler body (1), a circle center positioning device, scale mark layers (3), a through hole C (4) and a radius adjusting device (5). The circle center positioning device is disposed at one end of the ruler body (1). The scale mark layers (3) are disposed on the upper and lower sides of the ruler body (1). A slide groove (6) is formed in the ruler body (1). A groove (15) is formed in a position, matched with the slide groove (6), on the ruler body (1). The radius adjusting device (5) comprises a bolt B (16) with a bolt head b (19), a retaining block (17) and a nut (18). The bolt B (16) penetrates the slide groove (6) to be connected with the nut (18). The retaining block (17) is disposed between the nut (18) and the ruler body. The ruler has the advantages that the ruler can be used for measuring as a ruler and drawing a circle as a compass, and convenience is brought to teachers or students using the ruler; when the circle drawing function is not used, a positioning needle can be retracted to prevent the needle from hurting people.

Description

A kind of ruler that can doublely make compasses

Technical field

The utility model relates to a kind of ruler that can doublely make compasses.

Background technology

Existing ruler generally only has measurement function, serves as a teacher or student need to draw bowlder, just must another band compasses, and separately, it is very inconvenient to use for ruler and compasses.The compasses pin of existing compasses is outside exposed often, easily hurts sb.'s feelings.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of ruler that can doublely make compasses is provided, and the measurement function both with ruler also has the picture circle function of compasses, facilitate teacher or student to use, and while not using picture circle function, collapsible thimble, prevents that thimble from hurting sb.'s feelings.

The purpose of this utility model is achieved through the following technical solutions: a kind of ruler that can doublely make compasses, it comprises ruler body, center of circle positioning device, scale layer, through hole C and radius adjusting device, one end of ruler body is provided with center of circle positioning device, center of circle positioning device comprises the boss being arranged on ruler body and the bolt A matching with boss, on boss, be provided with through hole D, in boss, be provided with internal thread, on bolt A, be provided with the external screw thread matching with internal thread, bolt head a is set on bolt A, on bolt head a, be provided with anti-skidding striped and a piece, the end of bolt A is provided with thimble, the both sides up and down of ruler body are provided with scale layer, the below of ruler body high scale layer integer scale is provided with through hole C, on ruler body, be provided with chute, the position of matching with chute on ruler body is provided with groove, radius adjusting device comprises the bolt B with bolt head b, block and nut, bolt B is connected with nut through chute, block is arranged between nut and ruler, bolt head b is arranged in groove.

A described piece number is two, and two pieces are symmetricly set in the both sides of bolt head a.

The beneficial effects of the utility model are:

1), not only there is the measurement function of ruler but also there is the picture circle function of compasses, and facilitated teacher or student to use;

2), need to use picture circle function time, with hand, bolt A is screwed in boss, radius adjusting device is adjusted to the radius of appointment, fastening nut is fixed, paintbrush inserts in chute and rotates a circle along thimble near block, can obtain specifying the circle of radius, easy to operate; When not using picture circle function, bolt A is screwed out to boss, i.e. collapsible thimble, prevents that thimble from hurting sb.'s feelings;

3), anti-skidding striped and a piece are set on bolt A, there is antiskid function, easily swivel bolt A;

4), the both sides up and down of ruler body all arrange scale layer, the upper and lower both sides of ruler all have measurement function, facilitate teacher or student to use;

5), when wanted radius of a circle is integer, can draw fast circle by through hole C, easy to use.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation of the utility model center of circle positioning device;

Fig. 3 is the A-A cutaway view of Fig. 1;

In figure, 1-ruler body, 2-bolt A, 3-scale layer, 4-through hole C, 5-adjusting device, 6-chute, 7-bolt head a, 8-props up piece, the anti-skidding striped of 9-, 10-external screw thread, 11-thimble, 12-boss, 13-internal thread, 14-through hole D, 15-groove, 16-bolt B, 17-block, 18-nut, 19-bolt head b.

The specific embodiment

Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.

As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of ruler that can doublely make compasses, it comprises ruler body 1, center of circle positioning device, scale layer 3, through hole C4 and radius adjusting device 5, one end of ruler body 1 is provided with center of circle positioning device, center of circle positioning device comprises the boss 12 being arranged on ruler body 1 and the bolt A2 matching with boss 12, on boss 12, be provided with through hole D14, in boss 12, be provided with internal thread 13, on bolt A2, be provided with the external screw thread 10 matching with internal thread 13, bolt head a7 is set on bolt A2, on bolt head a7, be provided with anti-skidding striped 9 and a piece 8, the end of bolt A2 is provided with thimble 11, the both sides up and down of ruler body 1 are provided with scale layer 3, the below of ruler body 1 high scale layer 3 integer scale is provided with through hole C4, on ruler body 1, be provided with chute 6, the position of matching with chute 6 on ruler body 1 is provided with groove 15, radius adjusting device 5 comprises the bolt B 16 with bolt head b19, block 17 and nut 18, bolt B 16 is connected with nut 18 through chute 6, block 17 is arranged between nut 18 and ruler, bolt head b19 is arranged in groove 15.

Described piece 8 number are two, and two pieces 8 are symmetricly set in the both sides of bolt head a7.

The above is only preferred embodiment of the present utility model, be to be understood that the utility model is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can, in contemplated scope described herein, by technology or the knowledge of above-mentioned instruction or association area, change.And the change that those skilled in the art carry out and variation do not depart from spirit and scope of the present utility model, all should be in the protection domain of the utility model claims.

Claims (2)

1. the ruler that can doublely make compasses, it is characterized in that: it comprises ruler body (1), center of circle positioning device, scale layer (3), through hole C (4) and radius adjusting device (5), one end of ruler body (1) is provided with center of circle positioning device, center of circle positioning device comprises the boss (12) being arranged on ruler body (1) and the bolt A (2) matching with boss (12), on boss (12), be provided with through hole D (14), in boss (12), be provided with internal thread (13), on bolt A (2), be provided with the external screw thread (10) matching with internal thread (13), bolt head a (7) is set on bolt A (2), on bolt head a (7), be provided with anti-skidding striped (9) and a piece (8), the end of bolt A (2) is provided with thimble (11), the both sides up and down of ruler body (1) are provided with scale layer (3), the below of ruler body (1) high scale layer (3) integer scale is provided with through hole C (4), on ruler body (1), be provided with chute (6), the upper position of matching with chute (6) of ruler body (1) is provided with groove (15), radius adjusting device (5) comprises the bolt B (16) with bolt head b (19), block (17) and nut (18), bolt B (16) is connected with nut (18) through chute (6), block (17) is arranged between nut (18) and ruler, bolt head b (19) is arranged in groove (15).

2. a kind of ruler that can doublely make compasses according to claim 1, is characterized in that: described piece (8) number is two, and two pieces (8) are symmetricly set in the both sides of bolt head a (7).