CN212843246U

CN212843246U - Angle protractor

Info

Publication number: CN212843246U
Application number: CN202021733046.1U
Authority: CN
Inventors: 达正榕
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-03-30
Anticipated expiration: 2030-08-19

Abstract

An angle gauge. The problem that the conventional common protractor does not have the function of drawing a straight line with a specific inclination angle is mainly solved. The method is characterized in that: the rotatable direction indicator (2) is arranged on the mainboard, scales (20) are arranged on the direction indicator, a hollow groove (3) is arranged on the mainboard, and one end of the direction indicator corresponds to the hollow groove. The utility model provides a protractor turns to specific angle after, can directly draw the straight line of corresponding angle, and it is more convenient to use.

Description

Angle protractor

Technical Field

The utility model relates to a teaching tool field, concretely relates to protractor.

Background

When the traditional protractor for students is generally a semicircular thin plate, and angle scales are printed on the periphery of the semicircle for use, the degree of an angle can be read from the angle scale corresponding to the other side of the angle by aligning the middle point of the bottom edge of the protractor to the vertex of the angle and aligning the bottom edge with one side of the angle.

When a straight line is used, additional equipment is required because the conventional protractor does not have the function of drawing a straight line at a specific inclination angle.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency of the background art, the utility model provides a protractor mainly solves the problem that present ordinary protractor does not have the function of drawing the straight line of specific inclination.

The utility model discloses a concrete implementation scheme does:

the protractor comprises a main board, wherein a rotatable indicator is arranged on the main board, scales are arranged on the indicator, a hollow groove is formed in the main board, and one end of the indicator corresponds to the hollow groove.

The bottom of the beacon is flush with the bottom of the main board.

Holding tank on the mainboard, be equipped with the pivot in the holding tank, beacon one end stretch into in the holding tank with the pivot is articulated, terminal surface and holding tank upper and lower inner wall spacing cooperation about beacon.

The direction mark is relative fretwork groove part is equipped with the extension board, the extension board with mainboard bottom terminal surface parallel and level.

And a clamping groove for installing a painting part is formed in the outer wall of the bottom of the front end of the indicating plate.

The indicating meter is provided with a hinge hole for being hinged with the rotating shaft, and the inner wall of the hinge hole is provided with a rubber ring.

The utility model has the advantages that: the utility model provides a protractor turns to specific angle after, can directly draw the straight line of corresponding angle, and it is more convenient to use.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention.

Fig. 2 is a schematic diagram of an indicator according to an embodiment of the present invention.

Fig. 3 is a partial structural schematic diagram of a second embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings: as shown in the figure, the protractor comprises a main board 1, wherein a rotatable direction indicator 2 is arranged on the main board, scales 20 are arranged on the direction indicator, a hollow groove 3 is arranged on the main board, and one end of the direction indicator corresponds to the hollow groove. During the use, after rotating specific angle, can draw the straight line on the paper through the fretwork groove, like ordinary protractor, this protractor edge is equipped with the number of degrees, can be convenient rotate to the angle that wants, and the indicator can realize rotating with mainboard articulated cooperation.

In this embodiment, as shown, the bottom of the beacon is flush with the bottom of the motherboard. The pointer can be supported, so that the pointer is more stable.

In this embodiment, as shown in the figure, holding tank 111 on the mainboard, be equipped with pivot 112 in the holding tank, beacon one end stretches into in the holding tank with the pivot is articulated, terminal surface and holding tank upper and lower inner wall limit fit about beacon. One end of the beacon extends into the accommodating groove and is hinged with the rotating shaft, and the beacon is provided with a shaft hole 25 for being hinged with the rotating shaft.

In this embodiment, as shown in the figure, the pointer is provided with an extension plate 21 corresponding to the hollow-out groove, and the extension plate is flush with the end face of the bottom of the main board. The extension plate is contacted with the paper surface, so that the extension plate can not be suspended during rotation.

In this embodiment, as shown in the figure, the outer wall of the bottom of the front end of the indicating plate is provided with a slot 221 for installing the scribbler. The painting member can be a crayon or a chalk and the like, and can simply draw an arc.

In this embodiment, as shown in the figure, the indicating meter is provided with a hinge hole 25 for being hinged to the rotating shaft, and the inner wall of the hinge hole is provided with a rubber ring. And a certain resistance is provided, so that the indicator cannot easily shake.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The embodiments described with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. Protractor, comprising a main plate (1), characterized in that: the main board is provided with a rotatable indicator (2), the indicator is provided with scales (20), a hollow groove (3) is arranged on the main board, one end of the pointer is arranged corresponding to the hollow groove, the bottom of the beacon is flush with the bottom of the main board, the main board is provided with an accommodating groove (111), a rotating shaft (112) is arranged in the accommodating groove, one end of the indicator extends into the accommodating groove and is hinged with the rotating shaft, the upper end surface and the lower end surface of the direction indicator are in limit fit with the upper inner wall and the lower inner wall of the containing groove, the direction indicator is provided with an extending plate (21) corresponding to the hollow groove part, the extension plate is flush with the end face of the bottom of the main plate, the outer wall of the bottom of the front end of the beacon is provided with a clamping groove (221) for installing a painting part, the beacon is provided with a hinge hole (25) for hinging the rotating shaft, and the inner wall of the hinge hole is provided with a rubber ring.