CN210464342U

CN210464342U - Angle gauge

Info

Publication number: CN210464342U
Application number: CN201921998933.9U
Authority: CN
Inventors: 任天磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-05-05
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a protractor, include: the protractor comprises a protractor body with angle scales, a fixed arm, a movable arm, a rotating shaft hole and a rotating shaft fixing plate; the protractor body comprises a semicircular arc with scales and a bottom edge; the semicircular arc with the scales and the bottom edge are integrally formed; the rotating shaft fixing plate is circular and is arranged in the middle of the upper part of the bottom edge; the rotating shaft hole is formed in the circle center position of the rotating shaft fixing plate; the upper edge of the fixed arm and the rotating shaft hole are in the same straight line; the fixed arm is fixed with the bottom edge of the protractor body; the starting scale of the fixed arm is calculated from the position of the rotating shaft hole; the movable arm is a movable arm with scales, and the movable arm rotates around the semi-circular arc of the protractor body by taking the rotating shaft hole as a circle center. The utility model discloses a protractor simple structure, convenient to use can realize measuring promptly and draw promptly.

Description

Angle gauge

Technical Field

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

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

At present, a protractor is one of common tools in teaching or drawing, but when an existing protractor student or a drawing worker uses the protractor, the angle must be measured firstly, then a mark is made at an angle scale, and then the circle center of the protractor is connected with the mark, so that the protractor is troublesome to draw; in addition, when students use the protractor to measure the angle of the angle in the textbook, the students often need to extend each edge to measure the angle, so that the use of the textbook is affected by the disorder of seven and eight grains in the whole book.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.

SUMMERY OF THE UTILITY MODEL

Based on the foregoing defect, the utility model aims to solve the technical problem that a can make things convenient for the drawing, make things convenient for the protractor of volume angle.

In order to realize the purpose, the utility model provides a technical scheme is:

a protractor, comprising: the protractor comprises a protractor body with angle scales, a fixed arm, a movable arm, a rotating shaft hole and a rotating shaft fixing plate; the protractor body comprises a semicircular arc with scales and a bottom edge; the semicircular arc with the scales and the bottom edge are integrally formed; the rotating shaft fixing plate is circular and is arranged in the middle of the upper part of the bottom edge; the rotating shaft hole is formed in the circle center position of the rotating shaft fixing plate; the upper edge of the fixed arm and the rotating shaft hole are in the same straight line; the fixed arm is fixed with the bottom edge of the protractor body; the starting scale of the fixed arm is calculated from the position of the rotating shaft hole; the movable arm is a movable arm with scales, and the movable arm rotates around the semi-circular arc of the protractor body by taking the rotating shaft hole as a circle center.

Further, the moving arm is rotatably connected with the rotating shaft fixing plate through a rotating shaft bayonet; the bayonet of the rotating shaft is U-shaped; a support shaft is arranged in the middle of the bayonet of the rotating shaft; the supporting shaft just penetrates into the rotating shaft hole, so that the supporting shaft rotates in the rotating shaft hole; the width of the rotating shaft bayonet is slightly larger than the thickness of the rotating shaft fixing plate, so that the rotating shaft fixing plate is clamped in the middle of the rotating shaft bayonet; one side of the moving arm, which is far away from the rotating shaft fixing plate, faces the semicircular arc edge of the protractor body.

Further, an inner fixing plate is arranged on the inner side of the semi-circular arc of the protractor body; the inner fixing plate is fixed on the inner side of the semi-arc of the protractor body and has the same shape as the semi-arc of the protractor body; the thickness of the internal fixing plate is 1/3-2/3 of the thickness of the protractor body; the thickness of the rotating shaft fixing plate is 1/3-2/3 of the thickness of the protractor body.

Furthermore, an inner fixing plate bayonet is arranged at one end of the moving arm close to the semicircular arc edge of the protractor body; the width of the bayonet of the inner fixing plate is slightly larger than the thickness of the inner fixing plate; the inner fixing plate is clamped in the inner fixing plate clamping opening.

The utility model discloses a protractor simple structure, convenient to use can realize measuring promptly and draw promptly.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation. In the drawings:

fig. 1 is a schematic structural view of a protractor of the present invention;

FIG. 2 is a top view of the moving arm of the protractor;

FIG. 3 is a left side view of the moving arm of the protractor;

FIG. 4 is a schematic view of the construction of the protractor at 0 degrees;

FIG. 5 is a schematic view of the construction of the protractor at 45 degrees;

FIG. 6 is a schematic view of the construction of the protractor at 90 degrees;

fig. 7 is a schematic structural view of the protractor at 180 degrees.

Part names in the drawings are as follows:

the protractor comprises a protractor body 1, a fixed arm 2, a movable arm 3, a rotating shaft hole 4, an inner fixed plate 5, a rotating shaft fixed plate 6, a rotating shaft bayonet 7, a support shaft 8 and an inner fixed plate bayonet 9.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown, a protractor, comprising: the protractor comprises a protractor body 1 with angle scales, a fixed arm 2, a movable arm 3, a rotating shaft hole 4 and a rotating shaft fixing plate 6; the protractor body 1 comprises a semicircular arc with scales and a bottom edge; the semicircular arc with the scales and the bottom edge are integrally formed; the rotating shaft fixing plate 6 is circular and is arranged in the middle of the upper part of the bottom edge; the rotating shaft hole 4 is formed in the circle center position of the rotating shaft fixing plate 6; the upper edge of the fixed arm 2 and the rotating shaft hole 4 are on the same straight line, and the other end of the upper edge of the fixed arm 2 and the 0-degree or 180-degree scale of the protractor body are on the same straight line, namely, the rotating shaft hole 4, the upper edge of the fixed arm 2 and the 0-degree/180-degree scale of the protractor are on the same horizontal line. The fixed arm 2 is fixed with the bottom edge of the protractor body 1; the starting scale of the fixed arm 2 is calculated from the position of the rotating shaft hole; the moving arm 3 is a movable arm with scales, which rotates around the semi-circular arc of the protractor body 1 by taking the rotating shaft hole 4 as a circle center.

Further, the moving arm 3 is rotatably connected with the rotating shaft fixing plate 6 through a rotating shaft bayonet 7; the rotating shaft bayonet 7 is U-shaped; a support shaft 8 is arranged in the middle of the bayonet 7 of the rotating shaft; the support shaft 8 just penetrates into the rotating shaft hole 4, so that the support shaft 8 rotates in the rotating shaft hole 4; the width of the rotating shaft bayonet 7 is slightly larger than the thickness of the rotating shaft fixing plate 6, so that the rotating shaft fixing plate 6 is just clamped in the middle of the rotating shaft bayonet 7, and the rotating shaft bayonet can rotate; one side of the moving arm 3, which is far away from the rotating shaft fixing plate 6, faces the semicircular arc side of the protractor body 1; when the moving arm 3 points to O degree/180 degree, the upper edge of the moving arm 3 and the rotating shaft hole 4 are on the same horizontal line, the moving arm 3 is also marked with scales, and the starting point of the scales starts from the rotating shaft hole 4.

Further, an inner fixing plate 5 is arranged on the inner side of the semi-circular arc of the protractor body 1; the inner fixing plate 5 is fixed on the inner side of the semi-circular arc of the protractor body 1 and is the same as the semi-circular arc of the protractor body 1; the thickness of the inner fixing plate 5 is 1/3-2/3 of the thickness of the protractor body 1; the thickness of the rotating shaft fixing plate 6 is 1/3-2/3 of the thickness of the protractor body 1, and the rotating shaft fixing plate 6 can be inserted into the rotating shaft bayonet 7 as long as the inner fixing plate 5 can be inserted into the inner fixing plate bayonet 9.

Most preferably, the thickness of the inner fixing plate 5 is 1/3 of the thickness of the protractor body 1; the thickness of the rotating shaft fixing plate 6 is 1/3 of the thickness of the protractor body 1, and the thickness of the inner fixing plate 5 is equal to that of the rotating shaft fixing plate 6.

Further, an inner fixing plate bayonet 9 is arranged at one end of the moving arm 3 close to the semicircular arc edge of the protractor body 1; the width of the bayonet of the inner fixing plate is slightly larger than the thickness of the inner fixing plate 5; so that the inner fixing plate 5 is just clamped into the inner fixing plate bayonet 9, and the fixing plate bayonet can rotate on the inner fixing plate 5.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicants be construed as having contemplated such subject matter as being part of the disclosed subject matter.

Claims

1. A protractor, characterized in that the protractor comprises: the protractor comprises a protractor body (1) with angle scales, a fixed arm (2), a movable arm (3), a rotating shaft hole (4) and a rotating shaft fixing plate (6); the protractor body (1) comprises a semicircular arc with scales and a bottom edge; the semicircular arc with the scales and the bottom edge are integrally formed; the rotating shaft fixing plate (6) is circular and is arranged in the middle of the upper part of the bottom edge; the rotating shaft hole (4) is formed in the circle center position of the rotating shaft fixing plate (6); the upper edge of the fixed arm (2) and the rotating shaft hole (4) are on the same straight line; the fixed arm (2) is fixed with the bottom edge of the protractor body (1); the starting scale of the fixed arm (2) is calculated from the position of the rotating shaft hole; the movable arm (3) is a movable arm with scales, which rotates around the semicircular arc of the protractor body (1) by taking the rotating shaft hole (4) as a circle center.

2. The protractor according to claim 1, characterized in that the moving arm (3) is rotatably connected with the spindle fixing plate (6) by a spindle bayonet (7); the rotating shaft bayonet (7) is U-shaped; a support shaft (8) is arranged in the middle of the bayonet of the rotating shaft (7); the support shaft (8) just penetrates into the rotating shaft hole (4) to enable the support shaft (8) to rotate in the rotating shaft hole (4); the width of the rotating shaft bayonet (7) is slightly larger than the thickness of the rotating shaft fixing plate (6), so that the rotating shaft fixing plate (6) is clamped in the middle of the rotating shaft bayonet (7); one side of the moving arm (3) far away from the rotating shaft fixing plate (6) faces the semicircular arc side of the protractor body (1); the upper edge of the moving arm (3) and the rotating shaft hole (4) are on the same horizontal line.

3. The protractor according to claim 1 or 2, characterized in that the inner edge of the semicircular arc of the protractor body (1) is provided with an inner fixing plate (5); the inner fixing plate (5) is fixed on the inner side of the semi-circular arc of the protractor body (1) and is the same as the semi-circular arc of the protractor body (1); the thickness of the inner fixing plate (5) is 1/3-2/3 of the thickness of the protractor body (1); the thickness of the rotating shaft fixing plate (6) is 1/3-2/3 of the thickness of the protractor body (1).

4. The protractor according to claim 3, characterized in that one end of the moving arm (3) near the semi-circular arc edge of the protractor body (1) is provided with an inner fixing plate bayonet (9); the width of the bayonet of the inner fixing plate is slightly larger than the thickness of the inner fixing plate (5); the inner fixing plate (5) is clamped in the inner fixing plate bayonet (9).