CN202753658U

CN202753658U - Line tool for teaching

Info

Publication number: CN202753658U
Application number: CN 201220340234
Authority: CN
Inventors: 赵向荣; 郝永华; 夏男
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-16
Filing date: 2012-07-16
Publication date: 2013-02-27
Anticipated expiration: 2022-07-16

Abstract

The utility model relates to a line tool for teaching. The line tool comprises a long-bar-shaped block. Five through holes are arranged in the top face of the long-bar-shaped block at intervals crosswise. Chalks are inserted in all of the through holes. Chalk locking devices are arranged in the long-bar-shaped block and fastening bolts which correspond to each through hole. All fastening bolts are arranged on a lateral side of the long-bar-shaped block and the front ends of the fastening bolts stretch into the through holes and shore the chalks. Handles are arranged at the top end of the long-bar-shaped block. An idler wheel is arranged on each of four corners of the bottom end of the long-bar-shaped block. A contractive spring is arranged between the long-bar-shaped block and each idler wheel. Two handles are arranged at intervals and extend along the long-bar-shaped block crosswise. The line tool for teaching can rapidly draw five parallel lines at intervals, reduce labor intensity of a teacher, improves teaching efficiency and is simple in structure, convenient to use and low in cost.

Description

A kind of line drawing tool for teaching

Technical field

The utility model belongs to teaching appurtenance field, specifically a kind of line drawing tool for teaching.

Background technology

Music teachers will use staff saying class hour continually, needs teacher to draw five parallel and equally spaced lines with chalk at blackboard, and then draws on line various notes.For directly perceived and attractive in appearance, teacher need to gesticulate with ruler and draw item by item five lines.The way of above-mentioned setting-out is complex operation on the one hand, has increased teacher's labour intensity, and on the other hand setting-out efficient is low, and the waste time in classroom affects quality of instruction.If can there be a kind of instrument can draw fast five parallel and equally spaced lines, then can save a large amount of time in classroom, and can reduce teacher's labour intensity and improve the quality of teaching.

The utility model content

The technical problems to be solved in the utility model provides and a kind ofly can draw rapidly five equally spaced parallel lines and line drawing tool for teaching easy to use simple in structure.

For solving the problems of the technologies described above, the design feature of line drawing tool for teaching of the present utility model is that this line tool comprises a strip piece, uniformly-spaced offer five through holes along its length direction on the end face of this strip piece, equal plug-in mounting chalk is provided with the chalk locking device in each through hole in the strip piece.

Described chalk locking device is fastening bolt, and the front end that the respectively corresponding fastening bolt of each through hole, each fastening bolt are installed in the side of strip piece and fastening bolt stretches in the through hole and withstands on the chalk.

Described fastening bolt is located near on the position of bottom.

The top of described strip piece is equipped with handle.

The bottom of described strip piece respectively is equipped with a roller in the position at its four angles, is connected with coil tension spring between each roller and the strip piece.

Described handle interval arranges two and two handles and all extends along the length direction of strip piece.

The beneficial effects of the utility model are: five chalks of plug-in mounting in five through holes, and hold the strip piece and can draw five parallel and equally spaced straight lines at blackboard easily, reduced teacher's labour intensity, improved efficient, saved time in classroom; The chalk locking device adopts fastening bolt, and is simple in structure and locking effect good; Fastening bolt is located at the position near the bottom, can lock the short chalk of length, uses more conveniently, designs more humane; The setting party of handle hand-held, use more convenient; Roller be arranged so that guiding is convenient, avoided the setting-out sideslip, and roller realizes by coil tension spring flexiblely, simple in structure, made things convenient for the user to borrow power, effectively avoided the phenomenon of indivedual chalks fractures of causing because of unbalance stress; Two handles are set, can one hand during use stride and hold two handles, more convenient gripping and help to have an effect.The utility model can draw five equally spaced parallel lines fast, has reduced teacher's labour intensity, has improved efficiency of teaching and whole tool construction is simple, and is easy to use, with low cost.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Fig. 1 is the structural representation of a kind of embodiment of the present utility model;

Fig. 2 is the structural representation that the right side of Fig. 1 is looked;

Fig. 3 is the top view of Fig. 1.

The specific embodiment

With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of embodiment of line drawing tool for teaching of the present utility model is for comprising a strip piece 1, uniformly-spaced offer five through holes 10 along its length direction on the end face of this strip piece 1, each through hole 10 interior equal plug-in mounting chalk 2 is provided with the chalk locking device in the strip piece 1.Wherein, the chalk locking device is fastening bolt 3, and the front end that each through hole 10 respectively corresponding fastening bolts 3, each fastening bolt 3 are installed in the side of strip piece 1 and fastening bolt 3 stretches in the through hole 10 and withstands on the chalk 2.Fastening bolt 3 is used for locking chalk 2, and is preferred, and fastening bolt 3 is located near on the position of bottom, and this kind design is in order conveniently to lock shorter and smaller chalk 2.As shown in the figure, five chalks 2 of five through hole 10 interior plug-in mountings, the shape of through hole 10 and size are complementary with chalk 2, and the bottom of five chalks 2 is all stretched out the bottom face of strip piece 1 and exposed identical length, and hand-held strip piece 1 can draw equally spaced five parallel lines rapidly.

In order to grip more easily, as shown in the figure, the top of strip piece 1 is equipped with handle 4.Wherein, preferred, handle 4 intervals arrange two and two handles 4 all along the length direction extension of strip piece 1.Two handles 4 all are inverted U-shaped and be arranged in parallel, can one hand during use stride and hold two handles 4, more convenient gripping and help to have an effect.

With reference to accompanying drawing, the bottom of strip piece 4 respectively is equipped with a roller 5 in the position at its four angles, is connected with coil tension spring 6 between each roller 5 and the strip piece 1.The effect that roller 5 is set mainly is in order to lead, sideslip when preventing setting-out, and the bottom of roller 5 is concordant with the chalk that exposes 2 bottoms, connect with coil tension spring 6 between roller 5 and the strip piece 1, coil tension spring 6 is compressed during setting-out, and chalk end contacts with blackboard, and coil tension spring 6 rebounds after using.

Claims

1. line drawing tool for teaching, it is characterized in that this line tool comprises a strip piece (1), uniformly-spaced offer five through holes (10) along its length direction on the end face of this strip piece (1), equal plug-in mounting chalk (2) in each through hole (10), the strip piece is provided with the chalk locking device in (1); Described chalk locking device is fastening bolt (3), each through hole (10) is a corresponding fastening bolt (3) respectively, and the front end that each fastening bolt (3) is installed in the side of strip piece (1) and fastening bolt (3) stretches in the through hole (10) and withstands on the chalk (2).

2. line drawing tool for teaching as claimed in claim 1 is characterized in that described fastening bolt (3) is located near on the position of bottom.

3. line drawing tool for teaching as claimed in claim 1 or 2 is characterized in that the top of described strip piece (1) is equipped with handle (4).

4. line drawing tool for teaching as claimed in claim 1 or 2 is characterized in that the bottom of described strip piece (4) respectively is equipped with a roller (5) in the position at its four angles, is connected with coil tension spring (6) between each roller (5) and the strip piece (1).

5. line drawing tool for teaching as claimed in claim 3 is characterized in that described handle (4) interval arranges two and two handles (4) and all extends along the length direction of strip piece (1).