CN214475864U

CN214475864U - Movable angle demonstrator

Info

Publication number: CN214475864U
Application number: CN202120531435.4U
Authority: CN
Inventors: 陈运才
Original assignee: Guangzhou Changyun Stationery Co ltd
Current assignee: Guangzhou Changyun Stationery Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-10-22
Anticipated expiration: 2031-03-12

Abstract

The utility model relates to an auxiliary teaching tool technical field, in particular to a movable angle demonstrator, which comprises an annular substrate and a movable plate, wherein the annular substrate extends to the central point of the annular substrate to form a fixed plate, the annular substrate is provided with a first scale from 0 degree to 360 degrees, the central line of the fixed plate points to the scale mark of 0 degree, the movable plate passes through the central point and is hinged with the fixed plate, the two ends of the movable plate respectively point to the first scale, the angles of two included angles between the fixed plate and the movable plate can be directly read by rotating the movable plate, the two angles form a supplementary angle, the angle concept can be preliminarily learned and the angle can be manually drawn, the movable angle demonstrator can be used for student learning and teacher demonstration, so that students can clearly understand, firmly master and have simple structure, convenient to use, the angle of drawing is accurate.

Description

Movable angle demonstrator

Technical Field

The utility model relates to an auxiliary teaching tool technical field, concretely relates to movable angle demonstration ware.

Background

The difficulty of students in learning the protractor and distinguishing the acute angle and the obtuse angle is large, on one hand, the students cannot well distinguish which row of numbers to read when using the protractor, on the other hand, when using the protractor to draw angles, the students also need tools such as a ruler, and the like, and the operation is troublesome and not necessarily accurate, so that the special movable angle demonstrator becomes the current urgent need.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art provides an activity angle demonstration ware, can distinguish acute angle, right angle and obtuse angle with help student's study, can help student's study again to read the angle and draw corresponding angle.

The utility model discloses a following technical scheme realizes this purpose:

the utility model provides an activity angle demonstration ware, includes annular substrate and fly leaf, follows annular substrate extends to the central point department of annular substrate and forms a fixed plate, be provided with on the annular substrate from "0" to the first scale of "360", the central line of fixed plate points to "0" scale mark department, the fly leaf passes central point and is articulated with the fixed plate, the both ends of fly leaf point to first scale respectively.

Furthermore, the length of the movable plate is greater than the diameter of the annular substrate, and the two ends of the movable plate are respectively provided with a slot hole convenient for reading the first scale reading.

Preferably, a guideline pointing to the first scale is arranged at the slot hole.

Further, the annular substrate comprises an upper shell and a lower shell which are buckled with each other, and the fixing plate comprises an upper fixing plate and a lower fixing plate which are buckled with each other.

Furthermore, a semicircular movable angle plate is arranged on the movable plate, and the diameter of the movable angle plate is smaller than that of the annular substrate.

Further, a second scale from 0 degree to 180 degree is arranged on the movable angle plate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a movable angle demonstrator, fixed plate and "0" scale mark coincide, through rotating the fly leaf, can directly read the contained angle between fixed plate and the fly leaf, through can tentatively study the notion of angle and know the knowledge of angle like this, acute angle, right angle and obtuse angle of differentiation that can more systematized, utilize this movable angle demonstrator to study the manual drawing angle at the same time; in addition, because the two ends of the movable plate point to different values on the first scale, two angles can be formed between the fixed plate and the movable plate, the two angles form a supplementary angle, the concept of supplementing the angle for the students can be favorably realized, the movable angle demonstrator can be used for the students to study and can also be used for the teachers to demonstrate, the students can know the angle clearly, the understanding is deep, the grasping is firm, the structure is simple, the use is convenient, and the drawn angle is accurate.

Drawings

Fig. 1 is a schematic structural view of embodiment 1.

Fig. 2 is a rear view of fig. 1.

Fig. 3 is an exploded view of fig. 1.

Fig. 4 is a usage status demonstration diagram of embodiment 1.

Fig. 5 is a schematic structural view of embodiment 2.

Fig. 6 is a usage status demonstration diagram of embodiment 2.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1.

As shown in fig. 1-3, the present embodiment provides an activity angle demonstration device, which includes an annular substrate 1 and a movable plate 2, wherein a fixed plate 3 is formed by extending from the annular substrate 1 to a central point 11 of the annular substrate 1, a first scale from "0 ° to" 360 ° is disposed on the annular substrate 1, a central line of the fixed plate 3 points to a scale line "0 °", the movable plate 2 passes through the central point 11 to be hinged to the fixed plate 3, and two ends of the movable plate 2 point to the first scale respectively.

The utility model discloses an activity angle demonstrator, fixed plate 3 and "0" scale mark coincide, as shown in fig. 4, through rotating movable plate 2, can directly read the contained angle between fixed plate 3 and movable plate 2, because the different numerical values on the directional first scale in 2 both ends of movable plate, can form two angles between fixed plate 3 and movable plate 1, two angles become the supplementary angle, through this activity angle demonstrator student can tentatively study the concept of angle and know the knowledge of angle, can more systematized distinguish acute angle, right angle and obtuse angle, and can learn the concept of supplementary angle, the student can also utilize this activity angle demonstrator to move the hand to draw the angle; the movable angle demonstrator can be used for student learning and teacher demonstration, so that students can clearly understand the movable angle demonstrator, the movable angle demonstrator can firmly master the movable angle demonstrator, and is simple in structure, convenient to use and accurate in drawn angle.

The length of the movable plate 2 is greater than the diameter of the annular substrate 1, slot holes 21 convenient for reading the first scale reading are respectively formed at two ends of the movable plate 2, and a reference line 211 pointing to the first scale is arranged at the slot holes 21, so that the reading is convenient to accurately read.

Wherein, annular base plate 1 includes the last casing 12 and the lower casing 13 of mutual lock, fixed plate 3 includes the upper fixed plate 31 and the bottom plate 32 of mutual lock, and this kind of structure is convenient for install the articulated elements of central point department's fly leaf 2 and fixed plate 3 articulated, can improve the product simultaneously again pleasing to the eye, promote the product and feel.

Example 2.

As shown in fig. 5, the present embodiment is different from embodiment 1 in that: a semicircular movable angle plate 4 is arranged on the movable plate 2, the diameter of the movable angle plate 4 is smaller than that of the annular substrate 1, and a second scale from 0 degree to 180 degrees is arranged on the movable angle plate 4. The other structures are the same as those of embodiment 1, and are not described herein again.

In this embodiment, the movable angle demonstrator has two methods for reading angle values by arranging the semicircular movable angle plate 4 on the movable plate 2, one method is the same as the reading method of embodiment 1, and the other method is as shown in fig. 6, the movable plate 2 is used as a fixed plate of the movable angle plate 4, the annular substrate 1 is rotated, the fixed plate 3 points to a certain scale of the movable angle plate 4, at this time, two included angles are formed between the fixed plate 3 and the movable plate 2, two complementary angles can be obtained by reading the reading on the movable angle plate 4, and the knowledge of the angle can be learned as well.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also combinations between technical features in the above embodiments or in different embodiments are possible, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an activity angle demonstration ware, its characterized in that includes annular substrate and fly leaf, follows annular substrate extends to the central point department of annular substrate and forms a fixed plate, be provided with on the annular substrate from "0" to "360" first scale, the central line of fixed plate points to "0" scale mark department, the fly leaf passes central point and is articulated with the fixed plate, the both ends of fly leaf point to first scale respectively.

2. The movable angle demonstrator of claim 1, wherein the length of the movable plate is greater than the diameter of the annular substrate, and the movable plate has slots formed at both ends thereof for reading the first scale.

3. The active angle demonstrator of claim 2 wherein said slotted aperture is provided with a guideline pointing to the first scale.

4. The active angle demonstrator of claim 1 wherein said annular base plate comprises an upper housing and a lower housing that snap-fit to each other and said fastening plate comprises an upper fastening plate and a lower fastening plate that snap-fit to each other.

5. The active angle demonstrator of claim 1 wherein said movable plate is provided with a semicircular active angle plate having a diameter smaller than the diameter of the annular base plate.

6. The active angle demonstrator of claim 5 wherein said active angle plate is provided with a second scale from "0 °" to "180 °".