CN215495590U

CN215495590U - Solid geometry demonstration instrument

Info

Publication number: CN215495590U
Application number: CN202122079429.2U
Authority: CN
Inventors: 陈第琼; 庞汉宇; 刘一鹗
Original assignee: Chen Diqiong
Current assignee: Chen Diqiong
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-11
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a solid geometry demonstration instrument, which comprises a bottom plate and a plurality of telescopic demonstration rods, wherein the bottom plate is provided with a plurality of telescopic demonstration rods; the bottom plate is of a regular polygon structure, a plurality of semi-fixed structures are arranged above the corners of the bottom plate, and the lower ends of a plurality of telescopic demonstration rods are arranged in the semi-fixed structures; the telescopic demonstration rod consists of an upper telescopic rod and a lower telescopic rod, the lower end of the lower telescopic rod is provided with a spherical movable block, and the spherical movable block is arranged in the semi-fixed structure; the upper telescopic rod is hollow, and the lower telescopic rod is arranged in the upper telescopic rod; the locking lug is arranged below the upper telescopic rod, the locking nut is arranged above the locking lug, and the locking lug is tightly pressed through rotation of the locking nut, so that the fixing effect of the upper telescopic rod and the lower telescopic rod is realized. The utility model has the characteristics of convenient demonstration, image and simple structure, is easy to manufacture and is convenient to store.

Description

Solid geometry demonstration instrument

Technical Field

The utility model relates to a demonstration instrument, in particular to a solid geometry demonstration instrument.

Background

When the teaching staff goes on class, although the teaching task is completed according to the position of working, the effect is not ideal, and a lot of students can generate fear psychology after learning the solid geometry, fear the solid geometry and even lead to the gliding of the whole mathematic score.

The model plays an important bridge role in the learning of the solid geometry and the cultivation of the space imagination, and the visual model can provide specific and clear experience and is an important component for learning the solid geometry and cultivating the space imagination of students. When a student manually makes a model, the image of the model is formed in the brain, and then the image can be gathered in the making process of the model, so that the student naturally understands the established visual image, the interest of the student in learning the solid geometry is cultivated, and the creation and space imagination abilities of the student are also cultivated. The novel demonstration instrument is very simple and convenient to operate, applicable and obvious in effect.

Disclosure of Invention

The utility model aims to provide a solid geometry demonstration instrument which has the characteristics of convenience and image in demonstration, simple structure and easiness in manufacturing.

The solid geometry demonstration instrument is realized by the following technical scheme: comprises a bottom plate and a plurality of telescopic demonstration rods;

the bottom plate is of a regular polygon structure, a plurality of semi-fixed structures are arranged above the corners of the bottom plate, and the lower ends of a plurality of telescopic demonstration rods are arranged in the semi-fixed structures;

the telescopic demonstration rod consists of an upper telescopic rod and a lower telescopic rod, the lower end of the lower telescopic rod is provided with a spherical movable block, and the spherical movable block is arranged in the semi-fixed structure; the upper telescopic rod is hollow, and the lower telescopic rod is arranged in the upper telescopic rod; the locking lug is arranged below the upper telescopic rod, the locking nut is arranged above the locking lug, and the locking lug is tightly pressed through rotation of the locking nut, so that the fixing effect of the upper telescopic rod and the lower telescopic rod is realized.

As a preferred technical scheme, the semi-fixed structure comprises a fixed seat and a locking block arranged on the fixed seat; the fixing base is hollow inside, the shape of the inside of the fixing base is identical to that of the spherical movable block, a plurality of empty grooves are formed in the periphery of the fixing base, and the spherical movable block of the telescopic demonstration rod is convenient to install through the empty grooves.

As the preferred technical scheme, scales are marked on the lower telescopic rod of the telescopic demonstration rod.

As the preferred technical scheme, a magnetic part is arranged at the top of the upper telescopic rod.

The utility model has the beneficial effects that: the utility model has the characteristics of convenient demonstration, image and simple structure, is easy to manufacture and is convenient to store.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic plan view of the present invention;

FIG. 2 is a schematic view of the bottom plate structure of the present invention;

FIG. 3 is a schematic view of the structure A-A of the present invention;

FIG. 4 is a schematic view of the structure of B-B of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-4, the solid geometry demonstration instrument of the utility model comprises a bottom plate 1 and a plurality of telescopic demonstration rods 2;

the bottom plate 1 is in a regular polygon structure, a plurality of semi-fixed structures 3 are arranged above the corners of the bottom plate 1, and the lower ends of a plurality of telescopic demonstration rods 2 are arranged in the semi-fixed structures 3;

the telescopic demonstration rod 2 consists of an upper telescopic rod 21 and a lower telescopic rod 22, a spherical movable block 23 is arranged at the lower end of the lower telescopic rod 22, and the spherical movable block 23 is arranged in the semi-fixed structure 3; the upper telescopic rod 21 is hollow, and the lower telescopic rod 21 is arranged in the upper telescopic rod 21; the locking lug 25 is arranged below the upper telescopic rod 21, the locking nut 26 is arranged above the locking lug 25, and the locking lug 25 is pressed tightly through rotation of the locking nut 26, so that the fixing effect of the upper telescopic rod 21 and the lower telescopic rod 22 is realized.

In this embodiment, the semi-fixing structure 3 includes a fixing seat 31 and a locking block 32 disposed on the fixing seat 31; the fixing seat 31 is hollow, the shape of the inside of the fixing seat 31 is identical to that of the spherical movable block 23, a plurality of empty grooves 33 are formed in the periphery of the fixing seat 31, and the spherical movable block 23 of the telescopic demonstration rod 2 is convenient to install through the empty grooves 33.

In this embodiment, the lower telescopic rod 22 of the telescopic demonstration rod 2 is marked with a scale 27.

In this embodiment, the top of the upper telescopic rod 21 is provided with a magnetic member 24, and the magnetic members 24 attract each other to play a role in fixing.

The beneficial effects are as follows:

the utility model has the characteristics of convenient demonstration, image and simple structure, is easy to manufacture and is convenient to store.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. A solid geometry demonstration instrument is characterized in that: comprises a bottom plate (1) and a plurality of telescopic demonstration rods (2);

the bottom plate (1) is of a regular polygon structure, a plurality of semi-fixed structures (3) are arranged above the corners of the bottom plate (1), and the lower ends of a plurality of telescopic demonstration rods (2) are arranged in the semi-fixed structures (3);

the telescopic demonstration rod (2) consists of an upper telescopic rod (21) and a lower telescopic rod (22), a spherical movable block (23) is arranged at the lower end of the lower telescopic rod (22), and the spherical movable block (23) is arranged in the semi-fixed structure (3); the upper telescopic rod (21) is hollow, and the lower telescopic rod (22) is arranged in the upper telescopic rod (21); a locking convex block (25) is arranged below the upper telescopic rod (21), and a locking nut (26) is arranged above the locking convex block (25).

2. The solid geometry demonstration apparatus of claim 1 wherein: the semi-fixed structure (3) comprises a fixed seat (31) and a locking block (32) arranged on the fixed seat (31); the fixing seat (31) is hollow, the shape of the interior of the fixing seat (31) is matched with that of the spherical movable block (23), and a plurality of empty grooves (33) are formed in the periphery of the fixing seat (31).

3. The solid geometry demonstration apparatus of claim 1 wherein: scales (27) are marked on a lower telescopic rod (22) of the telescopic demonstration rod (2).

4. The solid geometry demonstration apparatus of claim 1 wherein: and a magnetic part (24) is arranged at the top of the upper telescopic rod (21).