CN201021951Y

CN201021951Y - Simplified chemical demonstration experiment amplification instrument

Info

Publication number: CN201021951Y
Application number: CNU2007200347296U
Authority: CN
Inventors: 李广恺
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-15
Filing date: 2007-02-15
Publication date: 2008-02-13
Anticipated expiration: 2017-02-15

Abstract

The utility model belongs to the field of teaching demonstration and particularly relates to a simple magnification device for chemical demonstration experiments, which is applied in teaching and characterized in that a console (10) is horizontally placed and the front of the console (10) is provided with an upright convex lens (20). By utilizing the principle that an erect magnified virtual image is formed when an object is arranged with the single focal length of the convex lens, the utility model is not convenient for teachers to operate but also able to clearly demonstrate the procedures of chemical experiments, besides, the utility model has a few components and is convenient to carry and low in costs.

Description

Simple and easy chemical lecture experiment amplifies instrument

Technical field

The utility model belongs to the teaching demonstration field, is specifically related to the simple and easy chemical lecture experiment amplification instrument that a kind of classroom instruction is used.

Background technology

In the modern chemistry teaching, the chemical experiment demonstration is very important ingredient, and the teacher uses multiple technologies to finish the chemical experiment demonstration on the classroom at present, and it is mainly various teaching projection devices and multimedia technology.Existing various teaching projection device shortcoming is more, except that cost is higher, restricted and the projection imaging effect is bad to experiment condition mostly, and instrument is comparatively heavy, inconvenience is carried, the instrument that has also need cooperate multiple support equipments such as motor, high intensity lamps, transformer and screen to use simultaneously, has had a strong impact on operation of teacher and classroom teaching effect; Multimedia technology can be with the chemical experiment process accurately, clearly project on the screen, but its cost is higher, can not extensively popularize use.

Summary of the invention

The purpose of this utility model provides a kind of simple and easy chemical lecture experiment and amplifies instrument, and instrument does not make things convenient for teacher to operate, and can clearly demonstrate the chemical experiment process, and parts few, be easy to carry, cost is lower.

For achieving the above object, the utility model has adopted following technical scheme: a kind of simple and easy chemical lecture experiment amplifies instrument, and it is characterized in that: the operator's console horizontal positioned, its front end is provided with upright convex lens.

As shown from the above technical solution, become principle upright, that amplify the virtual image when utilizing object to be in one times of focal length of convex lens, the instrument that chemical experiment is required places on the operator's console, and is in one times of focal length of convex lens, just can obtain chemical experiment image clearly, be convenient to very much operation of teacher; The core component that Ben Jianyi chemistry lecture experiment amplifies instrument only comprises operator's console and convex lens further as can be known by above-mentioned, so it not only is easy to carry, and cost is lower.

Summary of drawings

Fig. 1 is the structural representation that the simple and easy chemical lecture experiment of the utility model amplifies instrument;

Fig. 2 is the fixed sturcture synoptic diagram of convex lens;

Fig. 3 is the lower support structure synoptic diagram of bearing;

Fig. 4 is the syndeton synoptic diagram of operator's console and bearing;

Fig. 5 is the sectional view of crescent shape convex lens;

Fig. 6 be can before and after the simple and easy chemical lecture experiment of slip convex lens amplify the structural representation of instrument.

Embodiment

As shown in Figure 1, described operator's console 10 horizontal positioned, its front end is provided with upright convex lens 20.

Become principle upright, that amplify the virtual image when utilizing object to be in 20 1 times of focal lengths of convex lens, the instrument that chemical experiment is required places on the operator's console 10, and be in 20 1 times of focal lengths of convex lens, the students that is positioned at convex lens 20 front ends thus just can be observed chemical experiment image clearly, is convenient to very much operation of teacher.

As shown in Figure 2, described convex lens 20 are fixed in the picture frame 21, the

guide rail

11,12 of picture frame 21 and its both sides is for being slidingly matched and being in the adjustable state of upper-lower position, and picture frame 21 is fixed on the

guide rail

11,12 by securing member 22, and

guide rail

11,12 erectly is fixed on the two ends, the left and right sides of operator's console 10.

Convex lens 20 can slide up and down along

guide rail

11,12 from the above, and can be fixed on the interior arbitrary position of adjustment height, be convenient to the teacher and regulate convex lens 20 each position, help the student and observe chemical experiment well with amplification test according to the size of experimental apparatus.

As shown in Figure 1, the rear end of described operator's console 10 is provided with liner plate 30, and the width of the width of liner plate 30 and operator's console 10 coincide, and liner plate 30 is parallel with convex lens 20.

Be provided with liner plate 30 for the ease of observation of students experiment and in the rear end of operator's console 10, the width of liner plate 30 should be more than or equal to the width of operator's console 10, single color should be adopted in its surface, makes the background of chemical experiment of imaging comparatively unified, is not subjected to the influence of mottled image.

As optimal way of the present utility model, liner plate 30 can be chosen as translucent sheet or focussing glass, translucent sheet can select for use organic trnaslucent materials or other materials to make, the rear end of liner plate 30 is provided with light-emitting device 50, can open light-emitting device 50 under so big or the situation that other light is more weak at the moon, illuminate experimentation by translucent sheet or focussing glass, be convenient to observation of students.When light-emitting device 50 is chosen as daylight lamp, because of frosted glass has good diffuse effect to light, can eliminate the appreciable impact of pointolite so select focussing glass, and strengthened background effect, the white focussing glass especially can make the background of experiment more bright and saturating white, thereby increased the sharpness and the contrast of experiment image, made the experiment image more true to nature, natural.

For making the student's also observation experiment well in these cases that is positioned at the both sides, dais, except that design makes operator's console 10 can rotate, the upright

utmost point

41,42 that is in the light also can be set in the both sides of liner plate 30,

light barrier

41,42 is fixed on the operator's console 10 and to its rear end and extends, and the zone that places

light barrier

41,42 and liner plate 30 to surround light-emitting device 50,

light barrier

41 and 42 can block the light of light-emitting device 50 directive the utility model both sides, make the student of both sides unaffected, be able to observation experiment normally.

Shown in Fig. 1,4,6, the lower end of described operator's console 10 is provided with bearing 60, and bearing 60 and operator's console 10 are for being rotatably assorted.

For the student that makes each orientation, classroom observation experiment and be provided with bearing 60 in its lower end better, operator's console 10 and bearing 60 are designed to be rotatably assorted, and can make operator's console 10 around bearing 60 left-right rotation, to make things convenient for the observation of students of both sides, dais.

Realize that the mode that operator's console 10 and bearing 60 are rotatably assorted has multiple; as between operator's console 10 and bearing 60, thrust bearing being set; or the tubular structure that can cooperatively interact and rotate is set between operator's console 10 and bearing 60; no matter select which kind of mode for use, all be within the protection domain of the present utility model.

Shown in Fig. 1,3,4,6, as optimal way of the present utility model, bearing 60 both sides in its back-end are provided with two fixed supports 61, the position placed in the middle of its front end is provided with a screw, regulating part 62 and bearing 60 are for being threaded, and bearing 60 is in the adjustable state that has a down dip on its fixed support 61.Because it is adjustable to have a down dip on the bearing 60, adjustable thereby drive operator's console 10 and convex lens 20 also can be realized having a down dip, be beneficial to student's observation experiment better.

The xsect of convex lens 20 can have multiple shape, as optimal way of the present utility model, as shown in Figure 5, can make the xsect of convex lens 20 be crescent shape, so can increase the diffusingsurface of image that convex lens 20 become, make that need not to rotate the utility model just can make more student see to test image clearly; The material of convex lens 20 can be selected organic transparent material for use simultaneously, and making its weight is light than glass mirror, and better anticollision effect is arranged.

As shown in Figure 6, described operator's console 10 is provided with the

guide rail

13,14 of level in its and arranged on left and right sides, the bottom of

upright guide rail

11,12 is respectively equipped with

cross bar

15,16,

cross bar

15,16 respectively with the

guide rail

13,14 of level for being slidingly matched and being in the adjustable state of front and back position,

cross bar

15,16 is separately fixed on the

guide rail

13,14 of level by securing member 22.

By the

guide rail

13,14 that cross

bar

15,16 and horizontal positioned are set, convex lens 20 are moved along the fore-and-aft direction of operator's console 10, so when on operator's console 10, placing the chemical reaction instrument, can be owing to moving of convex lens 20 obtains bigger operating space, be convenient to the possibility of placing response instrument and minimizing and convex lens 20 collisions, the question response instrument is adjusted one times of focal length that it is positioned at convex lens 20 after placing operator's console 10 again, passes through the fixedly position of convex lens 20 of securing member 22 then.

Claims

1. a simple and easy chemical lecture experiment amplifies instrument, and it is characterized in that: operator's console (10) horizontal positioned, its front end is provided with upright convex lens (20).

2. simple and easy chemical lecture experiment according to claim 1 amplifies instrument, it is characterized in that: described convex lens (20) are fixed in the picture frame (21), the guide rail (11,12) of picture frame (21) and its both sides is for being slidingly matched and being in the adjustable state of upper-lower position, picture frame (21) is fixed on the guide rail (11,12) by securing member (22), and guide rail (11,12) erectly is fixed on the two ends, the left and right sides of operator's console (10).

3. simple and easy chemical lecture experiment according to claim 2 amplifies instrument, it is characterized in that: the rear end of described operator's console (10) is provided with liner plate (30), the width of the width of liner plate (30) and operator's console (10) coincide, and liner plate (30) is parallel with convex lens (20).

4. simple and easy chemical lecture experiment according to claim 3 amplifies instrument, it is characterized in that: described liner plate (30) is a translucent sheet, the both sides of liner plate (30) are provided with upright light barrier (41,42), light barrier (41,42) is fixed on that operator's console (10) is gone up and extends to its rear end, is provided with light-emitting device (50) in the zone that is surrounded by liner plate (30) and light barrier (41,42).

5. simple and easy chemical lecture experiment according to claim 4 amplifies instrument, and it is characterized in that: described liner plate (30) is a focussing glass, and described light-emitting device (50) is a daylight lamp.

6. amplify instrument according to each described simple and easy chemical lecture experiment of claim 1～4, it is characterized in that: the lower end of described operator's console (10) is provided with bearing (60), and bearing (60) and operator's console (10) are for being rotatably assorted.

7. simple and easy chemical lecture experiment according to claim 6 amplifies instrument, it is characterized in that: described bearing (60) both sides in its back-end are provided with two fixed supports (61), the position placed in the middle of its front end is provided with a screw, regulating part (62) and bearing (60) are for being threaded, and bearing (60) is in the adjustable state that has a down dip on its fixed support (61).

8. simple and easy chemical lecture experiment according to claim 6 amplifies instrument, it is characterized in that: described operator's console (10) is provided with the guide rail (13,14) of level in its and arranged on left and right sides, the bottom of upright guide rail (11,12) is respectively equipped with cross bar (15,16), cross bar (15,16) respectively with the guide rail (13,14) of level for being slidingly matched and being in the adjustable state of front and back position, cross bar (15,16) is separately fixed on the guide rail (13,14) of level by securing member (22).

9. amplify instrument according to each described simple and easy chemical lecture experiment of claim 1～3, it is characterized in that: the xsect of described convex lens (20) is crescent shape.

10. simple and easy chemical lecture experiment according to claim 9 amplifies instrument, and it is characterized in that: the material of described convex lens (20) is an organic transparent material.