CN2192924Y

CN2192924Y - Portable experimental box for physical study

Info

Publication number: CN2192924Y
Application number: CN 94224860
Authority: CN
Inventors: 蒋倬
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-15
Filing date: 1994-08-15
Publication date: 1995-03-22
Anticipated expiration: 2004-08-15

Abstract

The utility model discloses a portable experimental box for physical study, which is suitable for physical electricity test class or electronic amateurs for self-learning, comprising a box body, a box cover, an instrument panel, a test board, and an instrument, wherein, the instrument panel is inserted and fixed on the box body, the instrument is inserted and fixed on the instrument panel, the test board is inserted and fixed on the box cover, and the test board is provided with a socket in which a component inserting socket is inserted. The portable experimental box comprises various general required testing tools and essential elements, and schools and students are all capacity for purchasing to use. The utility model has the advantages of compact structure, convenient carrying, simpleness, and practicality, which can be used for physical test class and self-learning for students after class. The utility model used in class keeps the test environment regular, clean, and in good order, and the utility model used after class can help students further understand the circuit, which makes up for the disadvantage that the existing school has no physical teaching aid.

Description

Portable experimental box for physical study

The utility model discloses the portable experimental box that a kind of physics is commonly used, be applicable to that electrophysics laboratory or electronics amateur learn by oneself use.

At present, the student is when electricity basic theories such as study common circuit, digital circuit, logical circuit, teacher says according to bookish content often, the student memorize mechanicallys various electronic devices and components role and function in circuit, on a few joint Physical Experiment Course few in number, require the various circuit of overlap joint according to books, detect the effect of each electronic devices and components with all kinds of instrument checks; There are the following problems for this situation: 1) on the Physical Experiment Course, all kinds of test instrumentations are scattered in laboratory table everywhere, make experimental situation too in disorder, and instrument easily is damaged; 2) a few joint laboratories few in number can't satisfy student's study requirement, and the student levies down and has no chance to deepen understanding to knowwhy by lively experiment; 3) be not easy to the teacher to the management of experiment with instrument.

The purpose of this utility model provides the portable experimental box that a kind of physics is commonly used, and it has compact conformation, not fragile, easy to carry, simple and direct practical characteristics.

The purpose of this utility model is achieved in that the portable experimental box that a kind of physics is commonly used, it is made up of casing, case lid, instrument panel, brassboard, instrument, wherein, instrument panel is inlayed and is fixed on the casing, instrument is inlayed and is fixed on the instrument panel, brassboard is inlayed and is fixed on the case lid, but has the jack of placing components plug socket on the brassboard.

Wherein, on the instrument panel experimental power supply can be housed.

The utility model has the advantages that: a portable experimental box, required test instrumentation all kinds of commonly used and important document have been comprised, school, student all have the ability to purchase into used, the appearance of this portable experimental box, for the student provides a nested structure compactness, practicality easy to carry, simple and direct, can use on the Physical Experiment Course, can the student levy down the experiment equipment of learning by oneself use again, use apparent experimental situation neatly totally, without any confusion on the class, be convenient to management, class uses down and helps further understanding and the self-study of student to circuit.

Fig. 1 is the utility model open mode reference diagram;

Fig. 2 is the utility model casing schematic cross-section;

Fig. 3 is the utility model case lid schematic cross-section;

Fig. 4 is the utility model monnolithic case synoptic diagram;

Fig. 5 is a connecting line synoptic diagram between the utility model components and parts;

Fig. 6 is 2 components and parts plug sockets of the utility model synoptic diagram;

Fig. 7 is 3 components and parts plug sockets of the utility model synoptic diagram;

Fig. 8 is 4 components and parts plug sockets of the utility model synoptic diagram;

Fig. 9 is the utility model multiple spot components and parts plug socket synoptic diagram;

Figure 10 is the utility model experimental circuit schematic diagram;

Below in conjunction with accompanying drawing the utility model is done further argumentation in detail:

Embodiment 1:

As shown in Figure 1, the portable experimental box that a kind of physics is commonly used, it is made up of casing 1, instrument panel 2, instrument 3, experimental power supply 15, various components and parts plug socket 8, various electronic devices and components 9, connecting line 10, case lid 6, brassboard 4;

Wherein, have the through hole that size and all kinds of instrument and input and output terminal thereof, adjusting knob, switch, insurance etc. are complementary on the instrument panel 2, all kinds of instrument and input and output terminal thereof, adjusting knob, switch, insurance etc. fixing (can bonding or screw attachment or clamping) be on the through hole of instrument panel 2, in addition, at instrument panel 2(also brassboard 4) on accessory case 7(is arranged both can be one, also plug-in mounting fixing fitting case on the through hole of instrument panel 2), can be used for adorning various components and parts sockets 8, all kinds of electronic devices and components 9, connecting line 10 and small instruments and tools etc.; Referring to Fig. 2, instrument panel 2 is by the plug 11 of its bottom, and pegging graft is fixed in the socket 12 of casing 1.

But have the jack 5 of several rows of placing components plug socket 8 on the brassboard 4, referring to Fig. 3, brassboard 4 is inlayed and is fixed in the case lid 6, referring to Fig. 6, Fig. 7, Fig. 8, shown in Figure 9, components and parts plug socket 8 can have various plug socket forms such as 2 points, 3 points, 4 points, multiple spot or other point;

Experimental power supply 15 adopts external 220 volts of alternating currents to obtain through the rectification step-down, and output voltage is 0～30 volt of a direct current, and maximum output current is 800 milliamperes.The power supply acquisition mode of other instrument on the instrument panel 2 has two kinds, and a kind of is to obtain by the external power supply rectifier transformer, and another kind is to obtain with fixing dry cell batteries.

As shown in figure 10, the experimental power supply circuit is made up of three parts: first is a voltage transformation unit, and B constitutes by transformer, and its effect is that 220 volts of alternating voltages are become 30 volts of alternating voltages; Second portion is a rectification filtering unit, and its effect is that 30 volts of alternating voltages that transformer is exported are passed through diode D1, D2, D3, D4 rectification, respectively by capacitor C 1, C2 filtering, makes it to become 30 volts of DC voltage that are similar to the steady direct current again; Third part is the pressure regulation unit, and its main components and parts are three terminal regulator W and potentiometer R3, and effect is that 30 volts of DC voltage of rectification filtering unit output are carried out pressure regulation, and setting range is 0～30 volt; The 4th part is an output unit, form by capacitor C 3 and voltage table V, the effect of capacitor C 3 is that the power supply that will export at last carries out a filtering again, and to improve output quality, the effect of voltage table is to make the experimenter can adjust output voltage and observation mains voltage variations intuitively.

According to all ages and classes section student's different study requirements, the instrument kind of dress has nothing in common with each other in the portable experimental box described in the utility model, is applicable to pupil's assembled multimeter, milivoltmeter, power supply; Be applicable to assembled multimeter, milivoltmeter, power supply, low frequency signal source, TV oscilloscope that junior-senior high school is given birth to; Be applicable to assembled multimeter, milivoltmeter, power supply, low frequency signal source, the oscillograph of junior-senior high school physical test class; Be applicable to that the student learns the assembled multimeter of computer hardware, milivoltmeter, power supply, logic pen, TV oscilloscope; Be applicable to assembled multimeter, milivoltmeter, power supply, high-frequency signal source, low frequency signal source, TV oscilloscope, the logic pen of amateurish electrophile's study; Also can assemble corresponding required test instrumentation according to other specific (special) requirements.

Using method of the present utility model is:

The experimenter is according to the circuit theory diagrams of need overlap joint, number of pins according to used electronic devices and components among the figure is selected suitable element plug socket 8, layout according to components and parts in the schematic diagram, each the plug socket 8 order plug-in mounting that chooses are fixed on the jack 5 of brassboard 4, the pin of respective electronic components and parts is tight by the screw retention on the corresponding plug socket, with connecting line 10 each components and parts is connected, promptly finished the overlap joint of experimental circuit;

The plug 13 of experimental power supply 15 is connect civil power, turn on the power switch K, the supply voltage adjusting knob 14 by experiment, adjust the experiment required voltage, and be connected by the power input forward of connecting line with the experimental circuit that overlapped on experimental power supply lead-out terminal a, b and the brassboard, experimental circuit promptly is switched on;

Open the power switch (K1 or K2 or K3 or K4 or K5 or K6) that needs on the instrument panel 4 with instrument, corresponding instrument is promptly in running order;

Each test point that will detect in experimental circuit terminal that inputs or outputs with corresponding instrument on connecting line 10 and the instrument panel 2 is connected, demonstration directly perceived by instrument is (if usefulness is TV oscilloscope, can observe measurement to signal waveform by domestic TV), circuit is debugged and detected, deepen the understanding of experimenter's role in circuit circuit theory diagrams and corresponding components and parts thereof.

After experiment finishes, close each instrument power (K1 to K6) earlier, close experimental power supply K again, pull up attaching plug 13, in the accessory case 7 of again each electronic devices and components, connecting line, components and parts plug socket being packed into, the pass case is deposited and is got final product, as shown in Figure 4.

The utility model also can be cancelled experimental power supply 15, and the experimental circuit that overlap joint is good adopts the required power supply of external experiment or powered by the dry cell batteries of providing for oneself.

Content described in the utility model is not only for described embodiment.

Claims

1, the portable experimental box commonly used of a kind of physics, it is characterized in that: it is made up of casing (1), case lid (6), instrument panel (2), brassboard (4), instrument (3), wherein, instrument panel (2) is inlayed and is fixed on the casing (1), instrument (3) is inlayed and is fixed on the instrument panel (2), brassboard (4) is inlayed and is fixed on the case lid (6), brassboard (4) but on have the jack (5) of inserting element plug socket (8).

2, the portable experimental box commonly used of physics as claimed in claim 1 is characterized in that: experimental power supply (15) is housed on the instrument panel (2).

3, the portable experimental box commonly used of physics as claimed in claim 1 or 2 is characterized in that: be fixed with accessory case (7) on the instrument panel (2).

4, the portable experimental box commonly used of physics as claimed in claim 1 or 2 is characterized in that: be fixed with accessory case (7) on the brassboard (4).

5, the portable experimental box commonly used of physics as claimed in claim 3 is characterized in that: components and parts combination hub (8), electronic devices and components (9), connecting line (10) are housed in the accessory case (7).

6, the portable experimental box commonly used of physics as claimed in claim 4 is characterized in that: components and parts combination hub (8), electronic devices and components (9), connecting line (10) are housed in the accessory case (7).