CN209265793U - A kind of junior physics electromagnetic experimental device for electricity field - Google Patents

Abstract

The utility model discloses a kind of junior physics electromagnetic experimental devices for electricity field, including the exposed conductor wire of cloche and middle part, the cloche top surface is equipped with loudspeaker, and seat of pulling strings is installed at the top of cloche inner wall, the seat of pulling strings at the top of filament and thin steel cylinder by connecting, rotation needle is installed in the thin steel cylinder, the cloche is mounted on loading plate top surface, loading plate top surface two sides are equipped with binding post, the exposed conductor wire two sides in the middle part are each passed through two circular hole columns and connect with binding post, described two circular hole columns are mounted on loading plate top center position two sides, and two circular hole columns are arranged in cloche, through-hole is offered in the middle part of the binding post, and binding post screw top connects live conductor nut.The utility model, convenient experimental operation, electric wire are connected firmly, and more get information about galvanomagnetic-effect convenient for student, facilitate look at electromagnetic force to the operative condition of object.

Description

A kind of junior physics electromagnetic experimental device for electricity field

Technical field

The utility model relates to a kind of electromagnetic experimental device, specifically a kind of junior physics electromagnetism for electricity field is real Experiment device belongs to electricity field.

Background technique

There are magnetic fields around the magnetic effect electrified wire of electric current, and the direction in magnetic field is related with sense of current, this existing As the magnetic effect of referred to as electric current, which found in physicist's oersted by Denmark in 1820, and oersted is in the world the Associated people between one discovery electricity and magnetic, the magnetic field in the magnetic field energization of energization solenoid solenoidal magnetic field and bar magnet Equally.The polarity at its both ends is related with current direction, and the relationship between current direction and magnetic pole can be judged by Ampere's law, ampere Rule: holding solenoid with the right hand, allows four fingers to be directed toward sense of current in solenoid, then that end of thumb meaning is exactly solenoid The pole N, electromagnet is inserted into soft iron core in solenoid, is magnetic when a current passes through, and when no electric current just loses magnetism, this Kind magnet is called electromagnet, working principle: the magnetic effect of electric current.

The connection of junior physics electromagnetic experimental device electric wire is relatively complicated in the prior art, and is not connected firmly, and easily leads to Electrical anomaly, junior physics electromagnetic experimental device experiment effect is bad in the prior art, is not easy to student and more gets information about electricity Magnetic effect is unfavorable for observing electromagnetic force to the operative condition of object.Therefore, it proposes regarding to the issue above a kind of for electricity field Junior physics electromagnetic experimental device.

Utility model content

The purpose of this utility model is that solve the above-mentioned problems and provides a kind of junior middle school's object for electricity field Manage electromagnetic experimental device.

The utility model is achieved through the following technical solutions above-mentioned purpose, a kind of junior physics electricity for electricity field Magnetic experimental provision, including the exposed conductor wire of cloche and middle part, the cloche top surface is equipped with loudspeaker, and glass Seat of pulling strings is installed, the seat of pulling strings at the top of filament and thin steel cylinder by connecting, installation in the thin steel cylinder at the top of glass cover inner wall There is rotation needle, the cloche is mounted on loading plate top surface, and loading plate top surface two sides are equipped with binding post, The exposed conductor wire two sides in the middle part are each passed through two circular hole columns and connect with binding post, and described two circular hole columns, which are mounted on, to be held Support plate top center position two sides, and two circular hole columns are arranged in cloche, offer through-hole in the middle part of the binding post, and connect Terminal screw top connects live conductor nut.

Preferably, the conductor wire on both sides of the middle is equidistantly set respectively there are three thin steel cylinder.

Preferably, there are two the binding post is set, and two binding posts are separately mounted to loading plate top surface diagonal angle.

Preferably, diagonal angle offers threading hole at the top of the loading plate.

Preferably, the threading hole is U-shaped structure, and threading hole two-port is separately installed with binding post and circular hole column.

Preferably, the thin steel cylinder cross section is oval hoop, and thin steel cylinder is connected by " connecting rod " and rotation needle The length for connecing, and rotating needle is greater than the minor axis length of oval cross section.

Preferably, the loudspeaker bottom is arranged in cloche.

The beneficial effects of the utility model are: the utility model, convenient experimental operation, electric wire are connected firmly, it is convenient for student Galvanomagnetic-effect is more got information about, facilitates look at electromagnetic force to the operative condition of object, by crimping nut to " external electricity Line " is fixedly connected, and offers threading hole by diagonal angle at the top of loading plate, enhances the secured of " external cord " connection Property, sound is amplified by the loudspeaker of the starting on cloche and is propagated, so that experiment of electromagnetism effect is more obvious, passes through rotation The length of needle is greater than the minor axis length of oval cross section, is conducive to rotate the thin steel cylinder inner wall of needle rotating percussion.

Detailed description of the invention

Fig. 1 is the utility model overall structure diagram；

Fig. 2 is the utility model binding post structure schematic diagram；

Fig. 3 is the utility model conductor wire and loading plate attachment structure schematic diagram；

Fig. 4 is the thin steel tube structure schematic diagram of the utility model.

In figure: 1- loading plate, 101- threading hole, 2- binding post, 201- through-hole, 202- crimping nut, 3- circular hole column, 4- are thin Steel cylinder, 401- rotation needle, 5- filament, 6- are pulled strings seat, 7- loudspeaker, 8- cloche, 9- conductor wire.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to shown in Fig. 1-4, a kind of junior physics electromagnetic experimental device for electricity field, including cloche 8 with And the conductor wire 9 that middle part is exposed, 8 top surface of cloche is equipped with loudspeaker 7, and is equipped at the top of 8 inner wall of cloche It pulls strings seat 6, needle 401 will be rotated by loudspeaker 7 hits the sound that thin steel cylinder 4 generates and expand, it is more intuitive convenient for student Understand galvanomagnetic-effect, the seat 6 of pulling strings is equipped with rotary magnetic in the thin steel cylinder 4 by connecting at the top of filament 5 and thin steel cylinder 4 Needle 401, the cloche 8 are mounted on 1 top surface of loading plate, and the 1 top surface two sides of loading plate are equipped with binding post 2, Exposed 9 two sides of conductor wire in the middle part are each passed through two circular hole columns 3 and connect with binding post 2, and described two circular hole columns 3 are installed In 1 top center position two sides of loading plate, and two circular hole columns 3 are arranged in cloche 8, observe thin steel cylinder 4 by cloche 8 By the direction that galvanomagnetic-effect moment swings, electromagnetic force is facilitated look to the direction of thin 4 stress of steel cylinder, 2 middle part of binding post Through-hole 201 is offered, and 2 screw top of binding post connects live conductor nut 202, by crimping nut 202 to " external cord " It is fixedly connected.

As a kind of technical optimization scheme of the utility model, there are three 9 on both sides of the middle of conductor wire is equidistantly set respectively Thin steel cylinder 4 observes the effect of electromagnetic action convenient for user.

As a kind of technical optimization scheme of the utility model, there are two the binding post 2 is set, and two binding posts 2 divide It is not mounted on 1 top surface diagonal angle of loading plate.

As a kind of technical optimization scheme of the utility model, the 1 top diagonal angle of loading plate offers threading hole 101, enhance the fastness of " external cord " connection.

As a kind of technical optimization scheme of the utility model, the threading hole 101 is U-shaped structure, and 101 liang of threading hole Port is separately installed with binding post 2 and circular hole column 3.

As a kind of technical optimization scheme of the utility model, thin 4 cross section of steel cylinder is oval hoop, and Bao Gang Cylinder 4 is greater than the minor axis length of oval cross section by the length that " connecting rod " connect with rotation needle 401, and rotate needle 401, has Conducive to rotation thin 4 inner wall of steel cylinder of 401 rotating percussion of needle.

As a kind of technical optimization scheme of the utility model, 7 bottom of loudspeaker is arranged in cloche 8.

When the utility model is used, " external cord " is respectively inserted in the through-hole 201 at 2 middle part of binding post by user first It is interior, then crimping nut 202 is gently rotated with hand, make crimping nut 202 by " external cord " tightly pressing on binding post 2, After the connection for completing binding post 2 and " external cord ", user powers to " external cord ", while the conductor wire 9 on circular hole column 3 It is powered, according to the magnetic effect of electricity, the magnetism that the moment that conductor wire 9 is powered generates revolves the rotation needle 401 in thin steel cylinder 4 Turn, since thin 4 cross section of steel cylinder is oval structure, so rotation needle 401, which strikes thin 4 inner wall of steel cylinder, generates sound, simultaneously 4 moment of thin steel cylinder of 9 two sides of conductor wire pulled from cord swings to the same direction, and sound passes through the starting on cloche 8 Loudspeaker 7 by sound amplify propagate so that experiment of electromagnetism effect is more obvious.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by fall in claim containing with important document All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (7)

1. a kind of junior physics electromagnetic experimental device for electricity field, including the exposed conduction of cloche (8) and middle part Line (9), it is characterised in that: cloche (8) top surface is equipped with loudspeaker (7), and installation at the top of cloche (8) inner wall It pulls strings seat (6), the seat of pulling strings (6) is equipped in the thin steel cylinder (4) by connecting at the top of filament (5) and thin steel cylinder (4) It rotates needle (401), the cloche (8) is mounted on loading plate (1) top surface, loading plate (1) the top surface two sides Binding post (2) are installed；

The middle part exposed conductor wire (9) two sides are each passed through two circular hole columns (3) and connect with binding post (2), described two Circular hole column (3) is mounted on loading plate (1) top center position two sides, and two circular hole column (3) settings are interior in cloche (8), institute It states and is offered through-hole (201) in the middle part of binding post (2), and binding post (2) screw top connection live conductor nut (202).

2. a kind of junior physics electromagnetic experimental device for electricity field according to claim 1, it is characterised in that: institute Conductor wire (9) on both sides of the middle is stated equidistantly to be set respectively there are three thin steel cylinder (4).

3. a kind of junior physics electromagnetic experimental device for electricity field according to claim 1, it is characterised in that: institute It states there are two binding post (2) sets, and two binding posts (2) are separately mounted to loading plate (1) top surface diagonal angle.

4. a kind of junior physics electromagnetic experimental device for electricity field according to claim 1, it is characterised in that: institute It states diagonal angle at the top of loading plate (1) and offers threading hole (101).

5. a kind of junior physics electromagnetic experimental device for electricity field according to claim 4, it is characterised in that: institute Stating threading hole (101) is U-shaped structure, and threading hole (101) two-port is separately installed with binding post (2) and circular hole column (3).

6. a kind of junior physics electromagnetic experimental device for electricity field according to claim 1, it is characterised in that: institute Stating thin steel cylinder (4) cross section is oval hoop, and thin steel cylinder (4) is connect by " connecting rod " with rotation needle (401), and is revolved The length for turning needle (401) is greater than the minor axis length of oval cross section.

7. a kind of junior physics electromagnetic experimental device for electricity field according to claim 1, it is characterised in that: institute The setting of loudspeaker (7) bottom is stated in cloche (8).