CN210466954U

CN210466954U - Demonstration teaching aid for optical physical experiment

Info

Publication number: CN210466954U
Application number: CN201921606679.3U
Authority: CN
Inventors: 周伟恒
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-05-05
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a demonstration teaching aid of optics physics experiment, including the bottom plate, it has the adjustment tank to open on the bottom plate, and a plurality of sliding cylinders of joint in the adjustment tank, the joint slide bar in the sliding cylinder, the locking bolt is cup jointed to the sliding cylinder outer wall, sliding cylinder bottom installation clamp plate, clamp plate installation locking bolt, a plurality of slide bar tops install light source, lens holder, orifice plate, slit board in proper order and throw the screen, light source candle and laser pen, orifice plate and throw the screen fixed joint respectively at the top of slide bar. This device can rise the top part of slide bar according to the experiment and carry out different experiments, and lens frame and projection screen carry out the imaging experiment of lens, and the aperture on the aperture board carries out the aperture imaging experiment with the projection screen, but utilizes the slit board that stepless accent was adjusted and the slit diffraction experiment that the projection screen can carry out light in addition, improves the experience degree of experiment and the convenience of teacher's operation.

Description

Demonstration teaching aid for optical physical experiment

Technical Field

The utility model relates to a teaching aid technical field specifically is a demonstration teaching aid of optics physics experiment.

Background

Optical experiments are often required in middle school physics teaching, common experiments comprise pinhole imaging, convex lens and concave lens imaging characteristics, light slit diffraction and the like, in order to facilitate teaching, demonstration teaching aids are often required to be adopted for demonstration, the present demonstration teaching aids can only complete one optical experiment, teachers in teaching need to carry a plurality of teaching aids and are not beneficial to use, the demonstration of middle school physics experiments is the demonstration of characteristic effects, basically, single-factor change experiments are required, but the experiment conditions are changed at present, such as the change of the types of lenses and the specification of slits, the parts need to be completely removed and replaced, a trouble exists, the experiment experience of students can be blank, the sensitivity of the single-factor experiments is reduced, and particularly, the slit experiments, the present specification change of the slits is discontinuous, and continuous progressive simulation experiments can not be carried out, the resulting simulation effect is also less than ideal.

Therefore, a demonstration teaching aid for optical physical experiments is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a demonstration teaching aid of optics physics experiment to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a demonstration teaching aid of optics physics experiment, includes the bottom plate, it has the adjustment tank to open on the bottom plate, a plurality of sliding cylinders of slip joint in the adjustment tank, the slip joint slide bar in the sliding cylinder, and the sliding cylinder outer wall cup joints the locking bolt of in close contact with slide bar through helicitic texture, sliding cylinder bottom both sides outer wall fixed mounting clamp plate, through the locking bolt of helicitic texture installation in close contact with bottom plate on the clamp plate, light source, lens frame, orifice plate, slit board and projection screen are installed respectively at a plurality of slide bar tops, the light source includes the candle of vertical installation and horizontal installation's laser pen, the orifice plate with throw the screen fixed joint respectively at the top of slide bar.

Preferably, the bottom and the adjustment tank of a sliding cylinder are of a T-shaped structure matched with each other, a plurality of balls are rotatably mounted at the bottom of the sliding cylinder, and a length scale is arranged on the side wall of the adjustment tank.

Preferably, the lens frame includes the fixing base, fixing base fixed mounting is at the top of a slide bar, the outer wall of fixing base rotates the installation carousel through the round pin axle, the one end of four connecting plates of outer wall fixed connection of carousel, the other end fixed mounting lens of connecting plate, the stop pin is run through in the slide bar of fixing base bottom to the slip, it has the pinhole to open on the connecting plate, the spout has been seted up in the slide bar of fixing base bottom, the clamping ring is cup jointed to the outer wall of stop pin is fixed, the clamping ring slip joint is in the spout, clamping ring and spout are kept away from between the one end of connecting plate and are installed.

Preferably, four connecting plates are uniformly distributed along the circumferential direction of the turntable, convex lenses with different focal lengths are fixedly mounted on the end faces of the two connecting plates, concave lenses with different focal lengths are mounted on the end faces of the other two connecting plates, the spring is always in a compression state, and one end, close to the connecting plates, of the stop pin is of a hemispherical structure.

Preferably, the slit plate includes fixed basket, fixed frame fixed mounting is at a slide bar top, two light screens of the inner chamber slip joint of fixed frame, the equal fixed mounting slider in both ends of light screen, slider slip joint is on fixed frame lateral wall, fixed frame both sides wall all rotates and cup joints stud, two slider on the light screen is respectively through on the helicitic texture meshing stud, stud's top is run through fixed the cup jointing driven gear of fixed frame top surface, fixed frame top surface middle part is through the round pin hub connection driving gear, driving gear both sides meshing driven gear.

Preferably, a knob is fixedly mounted at one end of a pin shaft on the driving gear, the transmission ratio of the driving gear to the driven gear is 2:1, and the thread directions of the two ends of the stud are opposite.

Compared with the prior art, the beneficial effects of the utility model are that: the sliding rod can slide up and down along the inner cavity of the sliding cylinder so as to adjust the height of the sliding rod, and is locked and fixed through the locking bolt, so that a top part of the sliding rod is lifted for different tests according to the tests, the sliding cylinder can slide along the adjusting groove so as to adjust the distance of parts in each test and be fixed through the locking bolt, so that the projection on-screen imaging is facilitated, and the teaching aid can be used for teaching different optical tests and is convenient for teachers to use; when imaging experiments of the convex lens and the concave lens are carried out, the convex lens or the concave lens is quickly switched by rotating the turntable, so that experiments of different lenses are conveniently carried out, and the lenses are quickly fixed by clamping the stop pins with the pin holes, so that the use is convenient; carry out the slit diffraction experiment of light, drive two driven gear slow rotations through the driving gear, thereby make stud drive two light screens and be close to gradually, then the slit tapering, make the light beam that the laser pen jetted out permeate through the slit and form the diffraction stripe on throwing the screen, thereby be convenient for observe the diffraction stripe along with the change of slit width, it is more vivid to experiment, and when carrying out the change of experimental condition, need not complete dismouting with the part, fast and experience well, can embody the effect of single factor experiment more, it is easier to let the student understand.

Drawings

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

FIG. 2 is a schematic view of a left-side sectional structure of the adjusting groove of the present invention;

FIG. 3 is a schematic view of a front view cross-sectional structure of the lens holder of the present invention;

fig. 4 is a schematic view of the left-side view section structure of the slit plate of the present invention.

In the figure: the device comprises a base plate 1, a regulating groove 2, a sliding barrel 3, a sliding rod 4, a light source 5, a lens frame 6, a connecting plate 61, a rotating disc 62, a fixed seat 63, a sliding groove 64, a spring 65, a pressing ring 66, a stop pin 67, a pin hole 68, a small hole plate 7, a slit plate 8, a fixed frame 81, a shading plate 82, a stud 83, a sliding block 84, a driving gear 85, a driven gear 86, a projection screen 9 and a pressing plate 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a demonstration teaching aid of optics physics experiment, comprising a base plate 1, it has adjustment tank 2 to open on the bottom plate 1, a plurality of sliding cylinders of joint 3 in the adjustment tank 2, sliding joint slide bar 4 in the sliding

cylinder

3, and 3 outer walls of sliding cylinder cup joint the locking bolt of zonulae occludens slide bar 4 through helicitic texture, 3 bottom both sides outer wall fixed mounting clamp plate 10 of sliding cylinder, the locking bolt of zonulae occludens bottom plate 1 is installed through helicitic texture on the clamp plate 10, light source 5 is installed respectively in proper order at a plurality of slide bar 4 tops, lens frame 6, aperture board 7, aperture board 8 and projection screen 9, light source 5 includes the candle of vertical installation and horizontal installation's laser pen, aperture board 7 with throw screen 9 fixed joint respectively at the top of slide bar 4. The slide bar 4 can slide up and down along the inner cavity of the slide cylinder 3 to adjust the height of the slide bar 4, and is locked and fixed by the locking bolt, so that the top part of the slide bar 4 is lifted up to perform different tests according to the tests (also used for adjusting the height difference, so that the whole test can be smoothly performed), the imaging test of the convex lens or the concave lens can be performed by lifting the candle on the light source 5, the lens frame 6 and the projection screen 9, the pinhole imaging test can be performed by lifting the candle on the light source 5, the pinhole on the pinhole plate 7 and the projection screen 9, the slit diffraction test of light can be performed by the laser pen of the light source 5 (of course, the candle can be performed, but the effect is not particularly superior in bright environment due to insufficient brightness)), the slit plate 8 and the projection screen 9, and the slide cylinder 3 can slide along the adjusting groove 2, so that the distance of the parts in each test is adjusted and, facilitating imaging on the projection screen 9.

The bottom of sliding barrel 3 and adjustment tank 2 are matched with T type structure, are convenient for carry on spacingly to sliding barrel 3, and sliding barrel 3's bottom rotates a plurality of balls of installation, and 2 lateral walls departments of adjustment tank are equipped with the length scale, are convenient for control each experimental part interval.

The lens frame 6 comprises a fixed seat 63, the fixed seat 63 is fixedly arranged at the top of one sliding rod 4, the outer wall of the fixed seat 63 is rotatably provided with a turntable 62 through a pin shaft, the outer wall of the turntable 62 is fixedly connected with one end of four connecting plates 61, the other end of the connecting plate 61 is fixedly provided with a convex lens or a concave lens, the sliding rod 4 at the bottom of the fixed seat 63 is slidably penetrated through a stop pin 67, the connecting plate 61 is provided with a pin hole 68, the sliding rod 4 at the bottom of the fixed seat 63 is internally provided with a sliding groove 64, the outer wall of the stop pin 67 is fixedly sleeved with a pressing ring 66, the pressing ring 66 is slidably clamped in the sliding groove 64, a spring 65 is arranged between the pressing ring 66 and one end of the sliding groove 64 far away from the connecting plate 61, the four connecting plates 61 are uniformly distributed along the circumferential direction of the turntable, stop pin 67 is close to the one end of connecting plate 61 and is the hemisphere structure, then manual pulling stop pin 67 for stop pin 67 breaks away from pinhole 68, then can rotate carousel 62, and the convex lens or the concave lens that make the needs experiment are located directly over fixing base 63, loosen stop pin 67 again, and spring 65 promotes clamping ring 66 and makes stop pin 67 card go into in the pinhole 68, thereby is fixed with connecting plate 61, and can the different focus of fast switching convex lens and concave lens, the experiment of being convenient for.

In order to make the slit specification change more moderate and realize gradual change to facilitate understanding of the light propagation principle, the slit plate 8 comprises a fixed basket 81, the fixed frame 81 is fixedly installed at the top of one sliding rod 4, the inner cavity of the fixed frame 81 is slidably clamped with two light screens 82, both ends of each light screen 82 are fixedly provided with a sliding block 84, the sliding blocks 84 are slidably clamped on the side wall of the fixed frame 81, both side walls of the fixed frame 81 are rotatably sleeved with a stud 83, the sliding blocks 84 on the two light screens 82 are respectively engaged with the studs 83 through a threaded structure, the top of each stud 83 penetrates through the top surface of the fixed frame 81 and is fixedly sleeved with a driven gear 86, the middle part of the top surface of the fixed frame 81 is rotatably connected with a driving gear 85 through a pin shaft, both sides of the driving gear 85 are engaged with the driven gear 86, one end, the screw thread handedness at stud 83 both ends is opposite, through rotating driving gear 85 to make two driven gear 86 synchronous rotation, then driven gear 86 drives two stud 83 rotations simultaneously, then two light screens 82 are close to each other, make and form the slit between light screens 82, along with being close to gradually of light screens 82, then the slit tapering makes the light beam that the laser pen jetted out permeate through the slit and forms the diffraction stripe on projecting screen 9, thereby the diffraction stripe of being convenient for is along with the change of slit width.

The working principle is as follows: when the utility model is used, the slide bar 4 can slide up and down along the inner cavity of the slide cylinder 3, thereby adjusting the height of the slide bar 4 and is locked and fixed by the locking bolt, thereby raising the top part of the slide bar 4 according to the experiment to carry out different experiments or adjusting the height to ensure the smooth progress of the experiments, the imaging experiment of the lens can be carried out by raising the candle on the light source 5, the lens frame 6 and the projection screen 9, the aperture imaging experiment can be carried out by raising the candle on the light source 5, the aperture on the aperture plate 7 and the projection screen 9, the slit diffraction experiment of the light can be carried out by the laser pen of the light source 5, the slit plate 8 and the projection screen 9, and the slide cylinder 3 can slide along the adjusting groove 2, thereby adjusting the distance of the parts in each experiment and being fixed by the locking bolt, being convenient for imaging on the projection screen 9, wherein, when the imaging experiment of the, the stopping pin 67 is pulled manually, so that the stopping pin 67 is separated from the pin hole 68, the turntable 62 can be rotated, the convex lens or the concave lens to be tested is positioned right above the fixing seat 63, then the stopping pin 67 is loosened, the spring 65 pushes the pressing ring 66 to enable the stopping pin 67 to be clamped into the pin hole 68, the connecting plate 61 is fixed, the test is facilitated, the convex lens and the concave lens with different focal lengths can be rotated rapidly, and the test is facilitated;

carry out the slit diffraction experiment of light, through rotating driving gear 85, thereby make two driven gear 86 synchronous rotation, then driven gear 86 drives two stud 83 rotations simultaneously, then two light screens 82 are close to each other, make form the slit between light screen 82, along with being close to gradually of light screen 82, then the slit tapering, make the laser pen (of course the candle also can go on, but because luminance is not enough probably the effect is not particularly superior in bright environment) the light beam that jets out sees through the slit and forms the diffraction stripe on throwing screen 9, thereby be convenient for observe the diffraction stripe along with the change of slit width, the teaching aid can carry out different optical experiment teaching, the teacher of being convenient for carries, high durability and convenient use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a demonstration teaching aid of optics physics experiment, includes bottom plate (1), its characterized in that: open on bottom plate (1) has adjustment tank (2), a plurality of sliding barrel of joint (3) slide in adjustment tank (2), sliding barrel slides in (3) joint slide bar (4), and sliding barrel (3) outer wall cup joints the locking bolt of in close contact slide bar (4) through the helicitic texture, sliding barrel (3) bottom both sides outer wall fixed mounting clamp plate (10), through the locking bolt of helicitic texture installation in close contact bottom plate (1) on clamp plate (10), light source (5), lens frame (6), orifice plate (7), slit plate (8) and projection screen (9) are installed respectively at a plurality of sliding rod (4) tops, light source (5) are including the candle of vertical installation and horizontal installation's laser pen, orifice plate (7) and projection screen (9) are fixed joint respectively at the top of slide bar (4).

2. A demonstration teaching aid for optical physical experiments according to claim 1, which is characterized in that: the bottom of sliding barrel (3) and adjustment tank (2) are matched with T type structure, and the bottom of sliding barrel (3) rotates a plurality of balls of installation, adjustment tank (2) lateral wall department is equipped with the length scale.

3. A demonstration teaching aid for optical physical experiments according to claim 1, which is characterized in that: lens holder (6) are including fixing base (63), fixing base (63) fixed mounting is at the top of a slide bar (4), the outer wall of fixing base (63) rotates installation carousel (62) through the round pin axle, the one end of four connecting plates (61) of outer wall fixed connection of carousel (62), the other end fixed mounting lens of connecting plate (61), slide on slide bar (4) of fixing base (63) bottom and run through stop pin (67), it has pinhole (68) to open on connecting plate (61), spout (64) have been seted up in slide bar (4) of fixing base (63) bottom, clamping ring (66) are cup jointed to the outer wall of stop pin (67) is fixed, clamping ring (66) slip joint is in spout (64), between the one end of connecting plate (61) installation spring (65) are kept away from to clamping ring (66) and spout (64).

4. A demonstration teaching aid for optical physical experiments according to claim 3, which is characterized in that: four connecting plates (61) are evenly distributed along the circumferential direction of the turntable (62), convex lenses with different focal lengths are fixedly mounted on the end faces of the two connecting plates (61), concave lenses with different focal lengths are mounted on the end faces of the other two connecting plates (61), the spring (65) is always in a compression state, and one end, close to the connecting plates (61), of the stop pin (67) is of a hemispherical structure.

5. A demonstration teaching aid for optical physical experiments according to claim 1, which is characterized in that: slit board (8) are including fixed frame (81), fixed frame (81) fixed mounting is at a slide bar (4) top, two light screens (82) of the inner chamber slip joint of fixed frame (81), the equal fixed mounting slider (84) in both ends of light screen (82), slider (84) slip joint is on fixed frame (81) lateral wall, fixed frame (81) both sides wall all rotates and cup joints stud (83), two slider (84) on light screen (82) are respectively through the last of helicitic texture meshing stud (83), the top of stud (83) is run through fixed frame (81) top surface and is fixed cup jointed driven gear (86), fixed frame (81) top surface middle part is through round pin hub rotation connection driving gear (85), driving gear (85) both sides meshing driven gear (86).

6. A demonstration teaching aid for optical physical experiments according to claim 5, which is characterized in that: a knob is fixedly mounted at one end of a pin shaft on the driving gear (85), the transmission ratio of the driving gear (85) to the driven gear (86) is 2:1, and the thread directions of two ends of the stud (83) are opposite.