CN2237877Y

CN2237877Y - Multifunctional teacher's pointer

Info

Publication number: CN2237877Y
Application number: CN 96201063
Authority: CN
Inventors: 赖佳锚
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-04
Filing date: 1996-01-04
Publication date: 1996-10-16
Anticipated expiration: 2006-01-04

Abstract

The utility model relates to a novel multifunctional teaching aid. The utility model takes ferule as a principal mode, and also has other functions of a straight edge, an angle square, a protractor, a compasses, etc. The structure is that three large, middle and minor quadrate casings are connected together by a double folded leaflet which is a chain link structure like the bicycle chain. A spacer with convex pin is underlaid on the surface of the minor casing of every large casing sheathing on the minor casing. After sheathed in the large casing, the minor casing fits and positions with corresponding concave hole on the inner wall of the large casing. All of the socket pipe openings of the large casing are made into bundling shape to prevent the minor casing to fall out. The double folded leaflet is the key part of the utility model. The multifunctional pointer concentrates a plurality of visible teaching aids of math into one part, is convenient for teaching work and increases work efficiency. The utility model is convenient in use and carryover, saves teaching expense, and is an innovation of the modern teaching aid.

Description

A kind of multi-functional teacher's pointer

The utility model relates to a kind of teaching aid, particularly a kind of multi-functional teaching aid that integrates teacher's pointer, straight, angle square, protractor, compasses etc.

A long time ago, the teacher's pointer that the teacher uses always on the school classroom is a straight-bar, and material is seen many with rod, and the advantage of this teacher's pointer is easy to make, and so with regard to now, this teacher's pointer carries inconvenience, expends timber, and damage and function singleness easily fracture.Improved to some extent afterwards, employing is socketed to form by the metal hollow pipe of the different sizes of several joints, its structure and connected mode are just like telescopic Indoor TV antenna and scalable umbrella bar, its structure is: the hollow tubular of two joints or the above different sizes of two joints, successively by big pipe box tubule, be docile and obedient the socket place of preface at every joint bassoon and tubule, on the surface of two semicircles of tubule pad is housed respectively, the protruding nail of spring is arranged on the pad, the mouth of pipe of bassoon is made bundle mouthful shape, the inwall of the other end of bassoon is provided with fixing protruding nail, when bassoon socket tubule, as long as press the protruding nail of spring on the pad of little tube-surface, tubule is advanced the bassoon mouth of pipe of bundle mouthful shape, be pushed into to be lived by the fixing protruding screw top on the bassoon other end inwall and spacing always, when tubule is pulled out from bassoon, the protruding nail of spring that then always is pulled on the tubule pad is spacing restraining a mouthful shape place to be withstood greatly, the more piece sleeve structure successively roughly the same, thereby form a teacher's pointer, scalable, this teacher's pointer, use, easy to carry, be the teacher's pointer that is popular for many years, yet its function is still single.In general, the mathematics section audiovisual aids of primary school as: straight, angle square, protractor, compasses etc. use extensively, it is the teaching aid that bits per inch is learned teacher's indispensability, thereby, every teacher requires to be equipped with staff one cover, but the funds that often are limited to school, be difficult to satisfy, and this class teaching aid is many to be made of timber, both expended a large amount of timber, and be easy to again damage, brought inconvenience to teaching, and cause the certain economic loss, thereby numerous teachers place hope on strong-willed person can produce a kind of handy, the teaching aid of cheap and good-quality one-object-many-purposes satisfying vast teachers ' teaching requirements of one's work, and can be saved teaching fund for school.

The purpose of this utility model is that will to provide a kind of be principal mode with the teacher's pointer, has straight, angle square, protractor, compasses concurrently in the multi-functional teacher's pointer of one.

The utility model is achieved in that multi-functional teacher's pointer is by just like two joints of the structure of telescopic Indoor TV antenna and socket mode or the above different sizes of two joints and hollow circular-tube that can socket, the spacing protruding nail of inside pipe wall, surface are provided with the pad of the protruding nail of spring to be formed, and it is characterized in that:

1., the hollow bushing by large, medium and small three other shapes of joint cross section except that circle is socketed to form;

2., use eighty percent discount loose-leaf to connect between the middle sleeve greatly, just like the link configuration sample of bicycle chain, the eighty percent discount loose-leaf is made up of three joint loose-leaves, connect with screw between the loose-leaf, one joint loose-leaf of eighty percent discount loose-leaf one end is provided with two concave holes, be inserted in the bundle mouth shape mouth of pipe of pipe, coincide fixing with the protruding nail of middle inside pipe wall, the other end one the joint loose-leaf respectively have aperture on two thin plates up and down, pad with protruding nail is connected on the thin plate respectively, protruding nail catcher is fixing in the hole, and loose-leaf is inserted in the bundle mouth shape mouth of pipe of big sleeve pipe;

The scale reading that 3., expression length arranged on a surface of big sleeve pipe;

4., a side is provided with suspension ring on the end face of big sleeve pipe top, connects a screw rod under the suspension ring, is positioned at pipe, the end of screw rod is made a driver bit, the opposite side perforate is provided with chalk folder in the vestibule;

5., the end of big sleeve pipe is provided with adjustable pipe lid;

6., on a side of big sleeve pipe, open a slot in abutting connection with the corresponding position of suspension ring screw rod end, the built-in protractor of putting of vestibule, the right and left symmetry in hole has rectangular slot, the base of protractor studs with a sheet metal;

7., be respectively arranged with spacing shim, be provided with the hole that open on the protruding nail protruded tube of spring surface in the sleeve pipe simultaneously, with the corresponding location of shrinkage pool of middle sleeve inwall in the two sides of small casing;

8., the small casing end establishes compasses and decides needle device, is positioned at small casing, this device is by a rectangle hollow metal tube and place spiral fixed-point needle in the pipe and supporting with it long-neck nut is formed the usefulness of long-neck nut do adjusting fixed-point needle dilatability.

Protractor of the present utility model is to make with transparent material, and the sheet metal length of making at protractor base edge equals the protractor base length of side and a rectangular slot length sum, and its width and thickness respectively equal the width and the degree of depth of rectangular slot.

The driver bit of the screw rod end that connects at suspension ring can be in-line or cruciform.

Decide in the needle device at the compasses of small casing end, be positioned at the long-neck of the nut of pipe, its location structure can adopt a location screw is set on the rectangle tube-surface, also can adopt on long-neck and make a ring groove around circumference, is blocked the location by the protruding nail on the rectangle inside pipe wall.

The shell of the multi-functional teacher's pointer that the rectangle hollow bushings in the cross section that the utility model employing three joints are large, medium and small are socketed to form; adopting the cross section is the identical multi-functional teacher's pointer of structure that other shapes such as prismatic, semicircle or half elliptic hollow bushing are made, and also should be considered as dropping within the protection domain of the present utility model.

For a more detailed description below in conjunction with accompanying drawing to the utility model.

Fig. 1 is the schematic appearance after the utility model draws in.

Fig. 2 is the utility model inner structure cut-open view.

Fig. 3 is a user mode synoptic diagram of the present utility model.

With reference to Fig. 1-3, a kind of multi-functional teacher's pointer, be socketed to form by different sizes of three joints and rectangle hollow tubular that can socket, be carved with the length scale on the surface of big sleeve pipe 1, can make ruler uses, the mouth of pipe of big sleeve pipe 1 is made bundle mouthful shape and is provided with adjustable pipe lid 17, with the socket place of middle sleeve 2 an eighty percent discount loose-leaf 18 the same just like the structure between the chain link of bicycle chain is set at big sleeve pipe 1, have three joint loose-leaves, connect with screw between the three joint loose-leaves, wherein open two concave holes on a joint loose-leaf 4 surfaces at one end, be inserted in middle sleeve 2 and coincide spacingly by the protruding nail of inwall, a joint loose-leaf 5 of the other end is made up of the thin slice of perforate on two surfaces up and down, two pads 16 with protruding nail fill up respectively about on the thin slice, its protruding nail embeds the hole on the thin plate and locatees, this the joint loose-leaf 5 pack in the bundle mouth shape mouth of pipe of big sleeve pipe 1, pull out middle sleeve 2, and contain connect one the joint loose-leaf 4, can roll over and make the right angle angle square (as Fig. 3-C), middle sleeve 2 can move to the left and right does acute angle or the use of obtuse angle angle square; A side is established suspension ring 7 on the top end face of big sleeve pipe 1, can make the usefulness of suspension when teacher's pointer draws in, and suspension ring connect a screw rod 8 for 7 times, and the end of screw rod 8 is made a Philips screwdriver 19, can make the instrument of demolition, installation eighty percent discount loose-leaf 18 and fixed-point needle 12; The opposite side perforate of big sleeve pipe 1 top end face, chalk folder 6 is housed in the vestibule, on the folder behind the chalk, the eighty percent discount loose-leaf 18 of middle sleeve 2 and connection is drawn out to the bundle mouth shape mouth of pipe place of big sleeve pipe 1, reflexed eighty percent discount loose-leaf 18 is pulled out small casing 3 again from middle sleeve 2, and regulates the length of fixed-point needles 12 with nut 13, make middle sleeve 2 and small casing 3 and fixed-point needle 12 threes' length and equal big sleeve pipe 1 and chalk length and, just can do the compasses use (referring to Fig. 3-d); Screw rod 8 ends in a side of big sleeve pipe 1 in abutting connection with suspension ring 7 have a slot, vestibule is built-in puts a protractor 9 of being made by transparent material, slot the right and left symmetry has rectangular slot 10, the base of protractor 9 studs with a sheet metal, its length equals the length sum of the protractor 9 base length of sides and a rectangular slot 10, rectangular slot 10 is a locating slot of making protractor 9, during use, the sheet metal of from the rectangular slot of one side, mentioning protractor 9 bases, the protractor 9 of ensconcing in the vestibule is flipped out, at this moment sheet metal is fit in the rectangular slot of another side 10 again, makes protractor 9 location, can take measurement of an angle (referring to Fig. 3-b); Open the terminal adjustable pipe lid 17 of big sleeve pipe 1, pull out middle sleeve 2 from big sleeve pipe 1, pull out small casing 3 again from middle sleeve 2, at this moment location respectively then becomes a dapper teacher's pointer (referring to Fig. 3-a).

Multi-functional teacher's pointer is a reform of middle and primary schools' teaching aid, and one-object-many-purposes had both satisfied the needs of teaching job, also increased work efficiency greatly, saved the funds of school simultaneously, and tangible economic benefit and social benefit are arranged.

Claims

1, a kind of multi-functional teacher's pointer comprises that the pad that two joints or the above different size of two joints and hollow circular-tube, the spacing protruding nail of inside pipe wall, surface that can socket be provided with the protruding nail of spring forms, and it is characterized in that:

(1), the hollow bushing by large, medium and small three other shapes of joint cross section except that circle is socketed to form;

(2), use eighty percent discount loose-leaf to be connected between big sleeve pipe and the middle sleeve just like the link configuration sample of bicycle chain, the eighty percent discount loose-leaf is made up of three joint loose-leaves, connect with screw between the loose-leaf, one joint loose-leaf of eighty percent discount loose-leaf one end is provided with two concave holes, be inserted in the bundle mouth shape mouth of pipe of middle sleeve, coincide fixing with the protruding nail of middle sleeve inwall, the other end one the joint loose-leaf respectively have aperture on two thin plates up and down, pad with protruding nail is connected on the thin plate respectively, protruding nail catcher is located in the hole, and this joint loose-leaf is inserted in the bundle mouth shape mouth of pipe of big sleeve pipe;

(3), on a surface of big sleeve pipe, be carved with the scale reading of expression length;

(4), a side is provided with suspension ring on the end face of big sleeve pipe top, connects a screw rod under the suspension ring, is positioned at sleeve pipe, the end of screw rod is made a driver bit, the opposite side perforate of top end face is provided with chalk folder in the vestibule;

(5), the end of big sleeve pipe is provided with adjustable pipe lid;

(6), on a side of big sleeve pipe, open a slot in abutting connection with the relevant position of suspension ring screw rod end, the built-in protractor of putting of vestibule, the right and left symmetry in hole has rectangular slot, the base of protractor studs with a sheet metal;

(7), be respectively arranged with spacing shim, be provided with the hole on the protruding nail protruded tube of spring surface in the pipe, with the corresponding location of shrinkage pool of middle sleeve inwall in the two sides of small casing;

(8), the small casing end establishes compasses and decides needle device, is positioned at small casing, this device is by a rectangle hollow metal tube and place spiral fixed-point needle in the pipe and supporting with it long-neck nut is formed, the long-neck nut is made the usefulness that the adjusting fixed-point needle stretches.

2,, it is characterized in that being socketed to form by the rectangle hollow bushing of the different sizes of three joints according to the described multi-functional teacher's pointer of claim 1.

3,, it is characterized in that being socketed to form by the semicircle hollow bushing of the different sizes of three joints according to the described multi-functional teacher's pointer of claim 1;

4,, it is characterized in that being socketed to form by the half elliptic hollow bushing of the different sizes of three joints according to the described multi-functional teacher's pointer of claim 1;

5,, it is characterized in that being socketed to form by the prismatic or the prismatic hollow bushing of the different sizes of three joints according to the described multi-functional teacher's pointer of claim 1.

6,, it is characterized in that the material of hollow bushing adopts metal or plastics according to the described multi-functional teacher's pointer of claim 1-5.

7,, it is characterized in that protractor adopts transparent material to make according to the described multi-functional teacher's pointer of claim 1.

8, according to the described multi-functional teacher's pointer of claim 1, it is characterized in that the sheet metal that the protractor base is studded with, its length equal the protractor base length of side and a rectangular slot length and, its width and thickness respectively equal rectangular slot width and the height.

9,, it is characterized in that the driver bit of the screw rod end that suspension ring connect is a cruciform according to the described multi-functional teacher's pointer of claim 1.

10,, it is characterized in that the driver bit of the screw rod end that suspension ring connect is an in-line according to the described multi-functional teacher's pointer of claim 1.

11, according to the described multi-functional teacher's pointer of claim 1, it is characterized in that compasses decide in the needle device, be positioned at the long-neck of the nut of pipe, its location structure can adopt on the rectangle tube-surface dog screw is set, also can adopt on long-neck and make a ring groove, be blocked the location by the protruding nail on the rectangle inside pipe wall around circumference.