CN201309341Y

CN201309341Y - Multifunctional angle-drawing protractor

Info

Publication number: CN201309341Y
Application number: CNU2008201004048U
Authority: CN
Inventors: 欧阳刚; 欧阳桦
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-30
Filing date: 2008-10-30
Publication date: 2009-09-16
Anticipated expiration: 2018-10-30

Abstract

The utility model relates to a multifunctional angle-drawing protractor which comprises a body and a pointer, wherein the body is provided with a semi-circular strip hole and through holes which can be penetrated by a penpoint corresponding to a zero-degree graduation line, a centre point and a 180-degree graduation line; one end of the pointer is movably connected with the centre point of the body, and the other end is crossed with a dial of the body; a mark hole which can be penetrated by the penpoint is arranged in the position where the pointer corresponds to the semi-circular strip hole, and an indication line is printed in the longitudinal middle of the pointer. The multifunctional angle-drawing protractor can measure an angle by rotating the pointer, can draw an angle by using the penpoint to draw points in the mark hole on the pointer and the through holes which correspond to the zero-degree graduation line, the centre point or the 180-degree graduation line, is convenient to use and particularly applicable to middle school students and pupils, can simplify the angle measuring and drawing steps for the middle school students and the pupils, increases the angle measuring and drawing speed, lightens the study loads of the middle school students and the pupils and has the advantages of smart conception and reasonable design.

Description

Multi-functional angulation angle drawing device

Technical field

The utility model relates to and a kind ofly collects protractor, angle drawing device is the multi-functional stationery of one, belongs to the school supply and stationery technical field.

Background technology

In the prior art, protractor is a solid semicircle shape structure, the angle number of mark equal portions 180 degree on the circular arc, and it is mainly used in students in middle and primary schools' understanding and draws angle as a kind of the most common stationery.But be to use the standing crop hornwork to draw angle, need a plurality of steps, bring inconvenience, can increase the burden of students in middle and primary schools' study virtually to the pupil.CN201124690Y discloses a kind of " being easy to measure and draw the protractor template at angle ", constitute by protractor template and shank, shank flexibly connects by axle and protractor template, and the shank other end of this flexible connection is embedded in the groove of protractor circular arc inboard, and rotatable.There is following deficiency in the angulation angle drawing device of this structure: (1) because the protractor template is generally sheet plastic and makes, obviously there is certain difficulty in its machined grooves; (2) because shank is thinner, flexibly connect by axle and protractor template, also there is certain difficulty of processing; (3) shank rotates in groove, very easily damages the protractor template, exists to use inconvenient shortcoming; (4) owing to adopt shank to come angulation and picture angle, be difficult to guarantee the grazing of its arm of angle, and also be difficult to accurately measure or draw for less angle.

The utility model content

At the prior art above shortcomings, the purpose of this utility model provides a kind of easy to use, simple in structure, and multi-functional angulation angle drawing device easy to process.

The purpose of this utility model is achieved in that multi-functional angulation angle drawing device, is made of body and pointer, it is characterized in that, body is provided with the semi arch cylindrical void; Be respectively equipped with on the corresponding 0 ° of graduation mark of body, centre point and the 180 ° of graduation marks and be used for the through hole that nib passes; One end of pointer and the centre point of body flexibly connect, and the dial of the other end and body intersects; The position of the corresponding semi arch cylindrical void of pointer is provided with and is used for the index aperture that nib passes; The vertically middle index line that is printed on of pointer.

Further, the semi arch cylindrical void internal diameter of the corresponding body of described pointer or/and the external diameter edge be provided with and be meshed with it and be 45 ° slip-off preventing projection.

The centre point of described body is circumferentially with the boss that is used to install pointer, and pointer is provided with the mounting disc corresponding with boss.In addition, the semi arch cylindrical void two ends of described body are provided with position-limited edge.

Compared to existing technology, the utlity model has following advantage:

1, this multi-functional angulation angle drawing device, get final product angulation by rotary indicator, draw point with the through hole of the index aperture of nib on pointer and corresponding 0 ° of graduation mark, centre point or 180 ° of graduation marks and get final product the picture angle, have characteristics easy to use, especially be fit to students in middle and primary schools and use.Use it can simplify the step at students in middle and primary schools' angulation and picture angle, accelerate the speed at angulation and picture angle, alleviate students in middle and primary schools' learning burden, improve students'interest in learning.Have and be skillfully constructed characteristics reasonable in design.

2, this can design certain width to angulation angle drawing device pointer, not only can guarantee the grazing of the arm of angle, and it is arbitrarily angled to measure or draw, not only convenient use but also convenient processing.

3, simple in structure, the angulation angle drawing device main body after assembling is finished is drawn the angle pointer to angulation and is defined scope of activities, and angulation is drawn the angle pointer can be movable in limited range, but can not break away from limited zone.

4, carry out interlocking because angulation angle drawing device body and pointer correspondence are provided with the inclined-plane and the slip-off preventing projection of cooperation, not only effectively prevented coming off of angulation angle drawing device pointer, also have simple in structurely, make things convenient for machining characteristics.

Description of drawings

Fig. 1 is the multi-functional angulation angle drawing device of a utility model overall structure schematic diagram;

Fig. 2 is the A-A cutaway view (amplification) of Fig. 1;

Fig. 3 is the multi-functional angulation angle drawing device of a utility model pointer structure schematic diagram;

Fig. 4 is the multi-functional angulation angle drawing device of a utility model agent structure schematic diagram.

The specific embodiment

Embodiment 1: as Fig. 1, Fig. 3 and shown in Figure 4, the multi-functional angulation angle drawing device of the utility model is made of body 1 and pointer 2, and the main body of body 1 is a semicircle shape, and the outer rim of semi arch indicates the angle number of equal portions 180 degree, promptly is printed on 0 ° to 180 ° graduation mark; Body 1 is provided with semi arch cylindrical void 4; 0 ° of graduation mark on the body 1, centre point and 180 ° of graduation marks are respectively equipped with on corresponding 0 ° of graduation mark, centre point and the 180 ° of graduation marks and are used for the through hole 3 that nib passes on same straight line 7; One end of pointer 2 and the centre point of body 1 flexibly connect, and the dial of the other end and body 1 intersects, and pointer 2 can rotate on body 1; The position of pointer 2 corresponding semi arch cylindrical voids 4 is provided with and is used for the index aperture 5 that nib passes; The vertically middle index line 6 that is printed on of pointer 2.

This angulation angle drawing device body 1 and pointer 2 are made by transparent material.

In the time of angulation, straight line 7 on the multi-functional angulation angle drawing device main body and the index line 6 on the pointer 2 overlap with two limits at measured angle respectively, the index line of observing on the pointer 6 passes the angle numerical value of (or sensing), can learn the number of degrees at measured angle fast and accurately.

When drawing the angle, the angle that the pointed of multi-functional angulation angle drawing device is known, as the summit at angle, connects 8 marks of making on the angulation angle drawing device three mark points with line and gets final product by through

hole

3,5 and 8 markings on the angulation angle drawing device with pen.The utility model especially is fit to students in middle and primary schools to be used.

Embodiment 2: referring to Fig. 2, on the basis of embodiment 1, semi arch cylindrical void 4 internal diameters of pointer 2 corresponding bodies 1 or/and the external diameter bezel be provided with and be meshed with it and be 45 ° slip-off preventing projection 11.Be provided with up as internal diameter limit and be 45 ° inclined-plane at the semi arch cylindrical void 4 of multi-functional angulation angle drawing device main body; Pointer 2 correspondence positions are provided with and oppositely are 45 ° slip-off preventing projection 11 down, because the inclined-plane of engagement and projection 11 pointer that makes multi-functional angulation angle drawing device, can rotate and can not come off from angulation angle drawing device main body.In addition, be provided with position-limited edge 9, be used for limit pointer 2 and in 0 ° to 180 ° scope, rotate at the two ends of angulation angle drawing device body 1 first circular arc cylindrical void 4.

In addition, the centre point of described body 1 is circumferentially with the boss 10 that is used to install pointer 2, and pointer 2 is provided with and the mounting disc corresponding with boss 10.Certainly, body 1 is not limited thereto with the connected mode of pointer 2, also can be axle sleeve connection etc.

This multi-functional angulation is drawn angle pointer 2 one ends and is fixed on the angulation angle drawing device body 1, the other end is with the axis of rotation of angulation angle drawing device center of arc's point as pointer, the index line that rotates angulation picture angle pointer and observe on the pointer passes the angle numerical value of (or sensing), can learn the angle of measurement fast and accurately.

Claims

1, multi-functional angulation angle drawing device is made of body (1) and pointer (2), it is characterized in that body (1) is provided with semi arch cylindrical void (4); Be respectively equipped with the through hole (3) that is used for nib and passes on body (1) corresponding 0 ° of graduation mark, centre point and 180 ° of graduation marks; The centre point of one end of pointer (2) and body (1) flexibly connects, and the dial of the other end and body (1) intersects; The position of the corresponding semi arch cylindrical void of pointer (2) (4) is provided with the index aperture (5) that is used for nib and passes; The vertically middle index line (6) that is printed on of pointer (2).

2, multi-functional angulation angle drawing device according to claim 1 is characterized in that, semi arch cylindrical void (4) internal diameter of the corresponding body of described pointer (2) (1) or/and the external diameter edge be provided with and be meshed with it and be 45 ° slip-off preventing projection (11).

3, multi-functional angulation angle drawing device according to claim 1 is characterized in that, the centre point of described body (1) is circumferentially with the boss (10) that is used to install pointer (2), pointer (2) be provided with the corresponding mounting disc of boss (10).

4, multi-functional angulation angle drawing device according to claim 1 and 2 is characterized in that, semi arch cylindrical void (4) two ends of described body (1) are provided with position-limited edge (9).