CN207134027U - Ampere force presentation device - Google Patents
Ampere force presentation device Download PDFInfo
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- CN207134027U CN207134027U CN201720640990.4U CN201720640990U CN207134027U CN 207134027 U CN207134027 U CN 207134027U CN 201720640990 U CN201720640990 U CN 201720640990U CN 207134027 U CN207134027 U CN 207134027U
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Abstract
It the utility model is related to physical teaching aid field, more particularly to a kind of ampere force presentation device, including experimental box and accessory, include circuit inside experimental box, single-pole double-throw switch (SPDT) is provided with the outside of experimental box, variable resistance knob, ammeter display panel, dial plate, copper bar, accessory includes U magnet, spill copper cash, motor winding, cylindrical iron, electromagnet and soft iron, left hand rule can be separately verified and demonstrate using experimental box and different accessories, Ampere force size and current strength, electromagnetic field intensity, the relation of electrical conductor length, electrical conductor rolls phenomenon in magnetic field, motor principle, the interaction of power.The checking of multiple concepts and demonstration are integrated in one by this apparatus for demonstrating, so that abstract concept is more vivid, overall, directly perceived, be advantageous to improve the efficiency to knowledge understanding, and device is simple, simple operation, effectively saves the equipment of lecture experiment and the time of preparing experiment.
Description
Technical field
It the utility model is related to physical teaching aid field, and in particular to a kind of ampere force presentation device.
Background technology
If the experiment of conductor stress in magnetic field is demonstrated according to teaching material graphic display unit in physics, effect is simultaneously paid no attention to
Think, it is not overall enough, visual in image, it is difficult to have to the relation between power and power, between power and magnetic field, electric current one it is complete, whole
Body, vivid understanding, although also having there is the experimental provision much demonstrated in reality, if it is desired to explaining multinomial electromagnetic force
Gain knowledge, need a variety of teaching aids, prepare a variety of teaching aids and not only take but also can cause that desktop is in disorder, and space-consuming is big, have a strong impact on demonstration
Effect and efficiency.
Utility model content
The purpose of this utility model is to design to overcome disadvantages mentioned above and provide a kind of ampere force presentation device, can be at it
The upper demonstration for carrying out a variety of Ampere force related experiments, allows understanding of the student to Ampere force more to have globality, substantially increases
Efficiency of teaching and effect.
The technical scheme that uses of technical problem that the utility model solves for：
Described ampere force presentation device, including experimental box and accessory, the experimental box include orthogonal filter box
With vertical case, the filter box is arranged at the vertical case lower front and is close to vertical case, and two casees are cuboid, described perpendicular
Ammeter display panel is provided among above straight case leading flank, slide rail, the slide rail are provided with below the ammeter display panel
On slidably connect dial plate, the dial plate is perpendicular to vertical case and left below the top of filter box, the dial plate
The right side is symmetrically arranged with structure identical left group copper bar and right group copper bar, and wherein left group copper bar is included in same vertical plane
Upper copper bar and lower copper bar, the upper copper bar be connected to vertically through the leading flank perpendicular to the leading flank and its one end of vertical case
Circuit, the other end inside case is hanging, and one end of the lower copper bar is connected through the leading flank of vertical case with upper copper bar and its bar
Have among body and downward concave arc is arranged at two, single-pole double-throw switch (SPDT) and slide rheostat are provided with below the vertical case side
Variable resistance knob；
The vertical case is internally provided with circuit, and the circuit includes power supply, slide rheostat, ammeter, single-pole double throw
Switch, left joint, right connector, protective resistance, the left joint are connected and connect to the protection electricity with the left group copper bar
One end of resistance, the other end of the protective resistance are connected with power cathode, and one end of positive source and the slide rheostat connects
Connect, the other end of the slide rheostat is connected with one end of the ammeter, the other end of the ammeter and the hilted broadsword
The first output end connection of commutator, the second output end of the single-pole double-throw switch (SPDT) is connected with the positive source, described
The input of single-pole double-throw switch (SPDT) is connected with the right connector, and the right connector is connected with the right group copper bar.
The dial plate can horizontally slip on slide rail, adjustment position.
The setting of the concave arc in order to tangle experiment in accessory.
When the single-pole double-throw switch (SPDT) dials up, ammeter and slide rheostat access circuit；Work as single-pole double-throw switch (SPDT)
When centrally located, circuit disconnects, no current；When single-pole double-throw switch (SPDT) is stirred downwards, circuit is connected, but ammeter and cunning
Dynamic rheostat does not access circuit.
Wherein, preferred embodiment is as follows：
The accessory includes spill copper cash and 4 U magnets, and the spill copper cash includes first horizontal segment, the second level
Section, the 3rd horizontal segment, the first vertical section, the second vertical section, the 3rd vertical section and the first light plastic pointer, the first level
The right-hand member of section is hanging, left end is connected with the upper end of first vertical section, the lower end of first vertical section and second water
The right-hand member connection of flat section, the left end of second horizontal segment are connected with the lower end of second vertical section, second vertical section
Upper end be connected with the right-hand member of the 3rd horizontal segment, the left end of the 3rd horizontal segment and the lower end of the 3rd vertical section connect
Connect, the upper end of the 3rd vertical section is provided with the first light plastic pointer, and each part of spill copper cash is same perpendicular
In facing directly, the spill copper cash is cross-placed on recessed on the outside of described twice copper bars of experimental box by first horizontal segment and the 3rd horizontal segment
On arc, the first light plastic pointer is located at the registration side of the dial plate, and 4 U magnet homopolarities are arranged side by side
In the leading flank of vertical case described in the upper surface of the filter box and opening face, 4 U magnets are respectively positioned on the left side
Between side group copper bar and the right group copper bar, the second horizontal segment of the spill copper cash is positioned over opening for 4 U magnets
It is intraoral.
Using above-mentioned accessory, following experiment can be demonstrated, it is specific as follows：
1st, the experiment of left hand rule is demonstrated：Load 4 section dry cells in dry cell holder, single-pole double-throw switch (SPDT) is dialled upwards
Dynamic, access has the circuit of slide rheostat, it can be seen that spill copper cash moves in magnetic field, and the first light plastic pointer is referring to
Needle plate upper deflecting.Variable resistance knob is adjusted, observes ammeter display panel registration, increases current strength, it can be seen that the first lightweight is moulded
Expect the increase of throw of pointer radian, illustrate the presence of Ampere force, change the sense of current or change magnetic direction, it can be seen that the
One light plastic throw of pointer direction is with original on the contrary, thus illustrating left hand rule.
2nd, experiment of the size with the current strength relation in conductor of Ampere force is demonstrated：Allow the second horizontal segment of spill copper cash
At intraoral 2cm in U magnet, single-pole double-throw switch (SPDT) is dialed up, access has the circuit of slide rheostat, adjusts electric current
Direction or magnetic direction, (this process conductor is relatively even strong for opening end motion during spill copper cash stress to U magnet
Magnetic field, such as inwardly motion, changes of magnetic field is larger, is unfavorable for demonstrating).At this moment, effective length of the electrical conductor in magnetic field is with 4
The width of magnet is identical, and magnet number keeps constant, and the effective length of conductor is also constant, and magnetic induction intensity is also constant.Regulation becomes
Resistance knob causes electric current to change successively from 0.5A, 1A, 1.5A, 2A, it can be seen that the first light plastic pointer of spill copper cash is referring to
Refer to successively on 0.5,1,1.5,2 graduation mark on needle plate.This can illustrate in magnetic induction intensity and constant conductor effective length,
The size of Ampere force is directly proportional with the current strength in conductor.
3rd, experiment of the Ampere force size with the effective length relation of electrical conductor is demonstrated：The effective length of electrical conductor refers to
Part length of the conductor in magnetic field, the present apparatus change electrical conductor by increasing and decreasing the number of the U magnet of specification of the same race
Effective length, and magnetic induction intensity does not change.During experiment, variable resistance knob is first adjusted, keeps the current strength in circuit
2A, the second horizontal segment of spill copper cash is in successively in 4,3,2,1 U magnet homopolarity magnetic fields arranged side by side, can see
Refer to successively on 2,1.5,1,0.5 scale to the first light plastic pointer, this can illustrate that magnetic induction intensity and electric current are constant
When, the size of Ampere force is directly proportional with effective length.
4th, experiment of the qualitative demonstration Ampere force size with magnetic induction intensity relation：It is upward to stir single-pole double-throw switch (SPDT), circuit
Slide rheostat is accessed, adjusts variable resistance knob, the electric current in circuit is kept 2A, now quarter of the first light plastic pointer 2
On degree.Then 4 U magnets are promoted at leisure, the second horizontal segment is relatively moved the indent to magnet by the openend of magnet
Place (magnetic induction intensity of recess is smaller than opening according to knowable to the distribution of the U magnet line of induction), it can be seen that the first lightweight is moulded
Expect that registration of the pointer on dial plate reduces, for this explanation in electric current and constant effective length, Ampere force size is strong with magnetic induction
Degree has relation, and magnetic induction intensity is bigger, and the Ampere force being subject to is bigger.
The accessory includes U magnet, magnet cushion block and cylindrical iron, and the magnet cushion block is positioned over the filter box
Upper surface, the U magnet is positioned over the upper surface of the magnet cushion block and is located at the left group copper bar and the right side
Between group copper bar, the leading flank of its vertical case described in face that is open, the cylindrical iron is cross-placed on experimental box two on copper bar
Side and perpendicular to copper bar, the cylindrical iron is located at part among the left group copper bar and the right group copper bar also
In the opening of U magnet.
Using above-mentioned accessory, the experiment of demonstration left hand rule can be done, it is specific as follows：Stir single-pole double-throw switch (SPDT) downwards
(not accessing slide rheostat), switch on power (using 4 section dry cells), it can be seen that the cylindrical iron of energization stress in magnetic field
And roll.Change electric current or magnetic direction, the direction of motion of cylindrical iron also change therewith, illustrate left hand rule.
The accessory includes U magnet, magnet cushion block and motor winding, and the motor winding is thick by a diameter of 1mm
Enamel-covered wire around being made as 1.5 circles or 2.5 circles, including left the end of a thread, right the end of a thread and square coil, described left the end of a thread and the right line
Head stretches out positioned at the centre on the narrow side in both sides of the square coil and perpendicular to its narrow side respectively, the motor winding
Each several part is respectively positioned in same plane, and described left the end of a thread and described right the end of a thread wipe insulated paint off and be respectively placed in the experimental box two
On concave arc on the outside of lower copper bar, the magnet cushion block is positioned over the upper surface of the filter box, and the U magnet is positioned over described
The upper surface of magnet cushion block and between the left group copper bar and the right group copper bar, its vertical case described in face that is open
Leading flank, the square coil part is located in the opening of the U magnet.
Using above-mentioned accessory, the experiment of demonstration motor principle can be done, it is specific as follows：Stir single-pole double-throw switch (SPDT) downwards
Switch on power, do not access slide rheostat, start motor winding, motor winding can change electricity with lasting rotation
Stream direction or magnetic direction, motor winding rotation direction change therewith, illustrate hot-wire coil in magnetic field stress and turn
Dynamic, here it is the principle of motor.
The accessory includes electromagnet and soft iron, and the electromagnet includes suspension apparatus and electromagnet block, the suspention dress
Put including cross hollow pipe and front and rear bar, it is identical with symmetrical length and horizontal set that the cross hollow pipe includes montant
Left bar, the right bar put, wherein the left bar and the right bar are not communicated with, left copper cash, the right horizon bar are inserted with the left bar
Right copper cash is inside inserted with, the left and right copper cash length is identical and is all higher than left and right pole length, and the upper end of the montant is provided with perpendicular
Straight the second upward light plastic pointer, lower end horizontal connection have the front and rear bar, and the front and rear bar is vertical with left bar, the electricity
The side of magnet piece is parallel with front and rear bar and is located at the underface of front and rear bar, is fixed together by rubber strip and front and rear bar, electricity
Two leads of magnet piece electrically connect with left copper cash, right copper cash respectively, and the soft iron includes soft iron rod and suspension apparatus, described outstanding
Device for hoisting is identical with the suspension apparatus of electromagnet, and soft iron rod is fixed together also by rubber strip and suspension apparatus and is located at outstanding
The underface of device for hoisting, the soft iron rod have phase homogenous quantities, the left copper cash and right copper cash point of the electromagnet with electromagnet block
It is not positioned on symmetrical a pair of the concave arcs of described twice copper bars of experimental box, the soft iron is positioned over described twice copper of experimental box
On the symmetrical another pair concave arc of bar, the pointer of the electromagnet and the soft iron is respectively positioned on the registration one of the dial plate
Side.
Using above-mentioned accessory, the experiment of the interaction of demonstration power can be done, it is specific as follows：Treat the second light plastic pointer
After static, power supply is done with 4 section dry cells, single-pole double-throw switch (SPDT) is stirred downwards and switches on power and (do not access slide rheostat),
See because electromagnet and soft iron attract each other, two pointers rotate backward identical radian simultaneously, and the effect of explanation of force is mutual
, and it is equal in magnitude, in the opposite direction.
The filter box also includes the drawer for being arranged at upper surface bottom, is additionally provided among the leading flank of the drawer
Handle, all accessories are placed in drawer when not in use.
It is apart 8cm between the left group copper bar and right group copper bar.
It is apart 4.3cm between two concave arcs of every lower copper bar.It so can guarantee that electromagnet block and soft iron rod mutually lean on
The distance of near-end is not more than 8cm.
Dry cell holder is provided with below the vertical case trailing flank.
The beneficial effects of the utility model are：(1) relation between power and power can be demonstrated simultaneously with a device, power with
Relation between magnetic field, electric current so that abstract concept is more vivid, overall, directly perceived, improves the efficiency for understanding knowledge；(2) fill
Simple, simple operation is put, the equipment of lecture experiment and the time of preparing experiment is effectively saved, improves efficiency of teaching.
Brief description of the drawings
Fig. 1 is spill copper cash apparatus for demonstrating schematic diagram of the present utility model；
Fig. 2 is cylindrical iron prop apparatus for demonstrating schematic diagram of the present utility model；
Fig. 3 is motor winding apparatus for demonstrating schematic diagram of the present utility model；
Fig. 4 is electromagnet of the present utility model and soft iron apparatus for demonstrating schematic diagram；
Fig. 5 is experimental box structure schematic diagram of the present utility model；
Fig. 6 is experimental box internal circuit schematic diagram of the present utility model；
Fig. 7 is U magnet structure enlargement diagram of the present utility model；
Fig. 8 is spill structures of copper lines enlarged diagram of the present utility model；
Fig. 9 is cylindrical driving iron structures enlarged diagram of the present utility model；
Figure 10 is motor winding structure enlargement diagram of the present utility model；
Figure 11 is electromagnet structure enlarged diagram of the present utility model；
Figure 12 is soft iron structure enlarged diagram of the present utility model；
In figure：1st, filter box 2, vertical case 4, variable resistance knob 5, lower copper bar 6, upper copper bar 7, ammeter display panel 8, pointer
Plate 9, U magnet 10, spill copper cash 100, magnet cushion block 101, first horizontal segment 102, the first vertical section 103, the second horizontal segment
104th, the second vertical section 105, the 3rd horizontal segment 106, the 3rd vertical section 107, the first light plastic pointer 11, motor winding
111st, right the end of a thread 112, left the end of a thread 113, square coil 12, cylindrical iron 13, electromagnet 131, montant 132, right bar 133, a left side
Bar 134, left copper cash 135, right copper cash 136, the second light plastic pointer 137, front and rear bar 138, electromagnet block 139, soft iron rod
14th, soft iron 15, drawer 16, handle 17, dry cell holder B, left joint C, right connector R1, slide rheostat R2, protective resistance
V, power supply A, ammeter S, single-pole double-throw switch (SPDT).
Embodiment
The utility model is described further below in conjunction with drawings and examples.
Embodiment 1：
As shown in Fig. 1,5,6,7,8, described ampere force presentation device, including experimental box and accessory, the experiment case and bag
Orthogonal filter box 1 and vertical case 2 are included, the filter box 1 is arranged at the vertical lower front of case 2 and is close to vertical case
2, two casees are cuboid, and middle above the vertical leading flank of case 2 to be provided with ammeter display panel 7, the ammeter is shown
The lower section of disk 7 is provided with slide rail 81, slidably connects dial plate 8 on the slide rail 81, the dial plate 8 perpendicular to vertical case 2 simultaneously
Positioned at the top of filter box 1, the lower section of dial plate 8 is symmetrically set with structure identical left group copper bar and right group copper
Bar, wherein left group copper bar are included in upper copper bar 6 and lower copper bar 5 in same vertical plane, and the upper copper bar 6 is perpendicular to vertical case
Circuit, the other end that 2 leading flank and its one end is connected to inside vertical case 2 through the leading flank are hanging, the lower copper bar 5
One end connects and had among its body of rod the concave arc for being arranged to downward at two through the leading flank of vertical case 2 and upper copper bar 6, described perpendicular
Single-pole double-throw switch (SPDT) S and slide rheostat R1 variable resistance knob 4 are provided with below the straight side of case 2；
The vertical case 2 is internally provided with circuit, and the circuit includes power supply V, slide rheostat R1, ammeter A, hilted broadsword
Commutator S, left joint B, right connector C, protective resistance R2, the left joint B are connected and connect to the left group copper bar
One end of the protective resistance R2, the other end of the protective resistance R2 are connected with power supply V negative poles, power supply V positive poles and the cunning
Dynamic rheostat R1 one end connection, the other end of the slide rheostat R1 are connected with one end of the ammeter A, the electric current
The other end of Table A is connected with the first output end of the single-pole double-throw switch (SPDT) S, the second output end of the single-pole double-throw switch (SPDT) S
Be connected with the power supply V positive poles, the input of the single-pole double-throw switch (SPDT) S is connected with the right connector C, the right connector C with
The right group copper bar connection.
The dial plate 8 can horizontally slip on slide rail 81, adjustment position.
The setting of the concave arc in order to tangle experiment in accessory.
When the single-pole double-throw switch (SPDT) S is dialed up, ammeter A and slide rheostat R1 access circuits；Work as single-pole double throw
When switch S is centrally located, circuit disconnects, no current；When single-pole double-throw switch (SPDT) S is stirred downwards, circuit is connected, but electric current
Table A and slide rheostat R1 do not access circuit.
The filter box 1 also includes the drawer 15 for being arranged at upper surface bottom, is gone back among the leading flank of the drawer 15
Handle 16 is provided with, all accessories are placed in drawer 15 when not in use.
It is apart 8cm between the left group copper bar and right group copper bar.
It is apart 4.3cm between two concave arcs of every lower copper bar 5.It so can guarantee that electromagnet block 138 and soft iron rod 139
The distance at end close to each other is not more than 8cm.
Dry cell holder 17 is provided with below the vertical trailing flank of case 2.
The accessory includes spill copper cash 10 and 4 U magnets 9, the spill copper cash 10 include first horizontal segment 101,
Second horizontal segment 103, the 3rd horizontal segment 105, the first vertical section 102, the second vertical section 104, the 3rd vertical section 106 and first
Light plastic pointer 107, the right-hand member of the first horizontal segment 101 is hanging, left end and the upper end of first vertical section 102 connect
Connect, the lower end of first vertical section 102 is connected with the right-hand member of second horizontal segment 103, a left side for second horizontal segment 103
End is connected with the lower end of second vertical section 104, the upper end of second vertical section 104 and the 3rd horizontal segment 105
Right-hand member is connected, and the left end of the 3rd horizontal segment 105 is connected with the lower end of the 3rd vertical section 106, the 3rd vertical section
106 upper end is provided with the first light plastic pointer 107, and 10 each part of spill copper cash is in same vertical plane, institute
State spill copper cash 10 be cross-placed on by the horizontal segment 105 of first horizontal segment 101 and the 3rd it is recessed on the outside of described twice copper bars of experimental box
On arc, the first light plastic pointer 107 is located at the registration side of the dial plate 8, and 4 U magnets 9 homopolarity is simultaneously
Row is arranged at the leading flank of vertical case 2 described in the upper surface of the filter box 1 and opening face, 4 U magnets, the 9 equal position
Between the left group copper bar and the right group copper bar, the second horizontal segment 103 of the spill copper cash 10 is positioned over described 4
In the opening of individual U magnet 9.
Using above-mentioned accessory, following experiment can be demonstrated, it is specific as follows：
1st, the experiment of left hand rule is demonstrated：Load 4 section dry cells in dry cell holder 17, by single-pole double-throw switch (SPDT) S to
On stir, access has slide rheostat R1 circuit, it can be seen that spill copper cash 10 moves in magnetic field, the first light plastic
Pointer 107 is in the upper deflecting of dial plate 8.Variable resistance knob 4 is adjusted, the registration of observation ammeter display panel 7, increases current strength, can be with
See the deflection radian increase of the first light plastic pointer 107, illustrate the presence of Ampere force, change the sense of current or change magnetic
Field direction, it can be seen that the yawing moment of the first light plastic pointer 107 is with original on the contrary, thus illustrating left hand rule.
2nd, experiment of the size with the current strength relation in conductor of Ampere force is demonstrated：Allow the second horizontal of spill copper cash 10
At intraoral 2cm of the section 103 in U magnet 9, single-pole double-throw switch (SPDT) S is dialed up, access has slide rheostat R1 electricity
Road, adjusts the sense of current or magnetic direction, and opening end motion during spill 10 stress of copper cash to U magnet 9 (lead by this process
Body relatively uniform magnetic field, such as inwardly motion, changes of magnetic field is larger, is unfavorable for demonstrating).At this moment, electrical conductor is in magnetic field
Effective length it is identical with the width of 4 magnet, magnet number keep it is constant, the effective length of conductor is also constant, and magnetic induction is strong
Degree is also constant.Regulation variable resistance knob 4 causes electric current to change successively from 0.5A, 1A, 1.5A, 2A, it can be seen that the of spill copper cash 10
One light plastic pointer 107 refers on 0.5,1,1.5,2 graduation mark successively on dial plate 8.This can illustrate strong in magnetic induction
When degree and conductor effective length are constant, the size of Ampere force is directly proportional with the current strength in conductor.
3rd, experiment of the Ampere force size with the effective length relation of electrical conductor is demonstrated：The effective length of electrical conductor refers to
Part length of the conductor in magnetic field, the present apparatus change electrical conductor by increasing and decreasing the number of the U magnet 9 of specification of the same race
Effective length, and magnetic induction intensity does not change.During experiment, variable resistance knob 4 is first adjusted, keeps the current strength in circuit
2A, the second horizontal segment 103 of spill copper cash 10 is then set to be in successively in 4,3,2,1 homopolarity of U magnet 9 magnetic fields arranged side by side,
It can see that the first light plastic pointer 107 refers on 2,1.5,1,0.5 scale successively, this can illustrate magnetic induction intensity and electricity
When flowing constant, the size of Ampere force is directly proportional with effective length.
4th, experiment of the qualitative demonstration Ampere force size with magnetic induction intensity relation：It is upward to stir single-pole double-throw switch (SPDT) S, circuit
Slide rheostat R1 is accessed, regulation variable resistance knob 4, the electric current in circuit is kept 2A, now the first light plastic pointer 107 exists
On 2 scale.Then 4 U magnets 9 are promoted at leisure, the second horizontal segment 103 is relatively moved by the openend of magnet to magnetic
The interior recess of iron (magnetic induction intensity of recess is smaller than opening according to knowable to the distribution of the line of induction of U magnet 9), it can be seen that the
Registration of the one light plastic pointer 107 on dial plate 8 reduces, and for this explanation in electric current and constant effective length, Ampere force is big
Small to have relation with magnetic induction intensity, magnetic induction intensity is bigger, and the Ampere force being subject to is bigger.
Embodiment 2：
As shown in Fig. 2,5,6,7,9, described ampere force presentation device, including experimental box and accessory, the experiment case and bag
Orthogonal filter box 1 and vertical case 2 are included, the filter box 1 is arranged at the vertical lower front of case 2 and is close to vertical case
2, two casees are cuboid, and middle above the vertical leading flank of case 2 to be provided with ammeter display panel 7, the ammeter is shown
The lower section of disk 7 is provided with slide rail 81, slidably connects dial plate 8 on the slide rail 81, the dial plate 8 perpendicular to vertical case 2 simultaneously
Positioned at the top of filter box 1, the lower section of dial plate 8 is symmetrically set with structure identical left group copper bar and right group copper
Bar, wherein left group copper bar are included in upper copper bar 6 and lower copper bar 5 in same vertical plane, and the upper copper bar 6 is perpendicular to vertical case
Circuit, the other end that 2 leading flank and its one end is connected to inside vertical case 2 through the leading flank are hanging, the lower copper bar 5
One end connects and had among its body of rod the concave arc for being arranged to downward at two through the leading flank of vertical case 2 and upper copper bar 6, described perpendicular
Single-pole double-throw switch (SPDT) S and slide rheostat R1 variable resistance knob 4 are provided with below the straight side of case 2；
The vertical case 2 is internally provided with circuit, and the circuit includes power supply V, slide rheostat R1, ammeter A, hilted broadsword
Commutator S, left joint B, right connector C, protective resistance R2, the left joint B are connected and connect to the left group copper bar
One end of the protective resistance R2, the other end of the protective resistance R2 are connected with power supply V negative poles, power supply V positive poles and the cunning
Dynamic rheostat R1 one end connection, the other end of the slide rheostat R1 are connected with one end of the ammeter A, the electric current
The other end of Table A is connected with the first output end of the single-pole double-throw switch (SPDT) S, the second output end of the single-pole double-throw switch (SPDT) S
Be connected with the power supply V positive poles, the input of the single-pole double-throw switch (SPDT) S is connected with the right connector C, the right connector C with
The right group copper bar connection.
The dial plate 8 can horizontally slip on slide rail 81, adjustment position.
The setting of the concave arc in order to tangle experiment in accessory.
When the single-pole double-throw switch (SPDT) S is dialed up, ammeter A and slide rheostat R1 access circuits；Work as single-pole double throw
When switch S is centrally located, circuit disconnects, no current；When single-pole double-throw switch (SPDT) S is stirred downwards, circuit is connected, but electric current
Table A and slide rheostat R1 do not access circuit.
The filter box 1 also includes the drawer 15 for being arranged at upper surface bottom, is gone back among the leading flank of the drawer 15
Handle 16 is provided with, all accessories are placed in drawer 15 when not in use.
It is apart 8cm between the left group copper bar and right group copper bar.
It is apart 4.3cm between two concave arcs of every lower copper bar 5.It so can guarantee that electromagnet block 138 and soft iron rod 139
The distance at end close to each other is not more than 8cm.
Dry cell holder 17 is provided with below the vertical trailing flank of case 2.
The accessory includes U magnet 9, magnet cushion block 100 and cylindrical iron 12, and the magnet cushion block 100 is positioned over
The upper surface of the filter box 1, the U magnet 9 are positioned over the upper surface of the magnet cushion block 100 and are located at the left side
Between group copper bar and the right group copper bar, the leading flank of its vertical case 2 described in face that is open, the cylindrical iron 12 bridges
In on experimental box two above copper bar and perpendicular to copper bar, the cylindrical iron 12 positioned at the left group copper bar and described
Part among right group copper bar is also located in the opening of U magnet 9.
Using above-mentioned accessory, the experiment of demonstration left hand rule can be done, it is specific as follows：Stir single-pole double-throw switch (SPDT) S downwards
(not accessing slide rheostat R1), the V that switches on power (use 4 section dry cells), it can be seen that the cylindrical iron 12 of energization is in magnetic field
Middle stress and roll.Change electric current or magnetic direction, the direction of motion of cylindrical iron 12 also change therewith, illustrate left hand
Rule.
Embodiment 3：
As shown in Fig. 3,5,6,7,10, described ampere force presentation device, including experimental box and accessory, the experiment case and bag
Orthogonal filter box 1 and vertical case 2 are included, the filter box 1 is arranged at the vertical lower front of case 2 and is close to vertical case
2, two casees are cuboid, and middle above the vertical leading flank of case 2 to be provided with ammeter display panel 7, the ammeter is shown
The lower section of disk 7 is provided with slide rail 81, slidably connects dial plate 8 on the slide rail 81, the dial plate 8 perpendicular to vertical case 2 simultaneously
Positioned at the top of filter box 1, the lower section of dial plate 8 is symmetrically set with structure identical left group copper bar and right group copper
Bar, wherein left group copper bar are included in upper copper bar 6 and lower copper bar 5 in same vertical plane, and the upper copper bar 6 is perpendicular to vertical case
Circuit, the other end that 2 leading flank and its one end is connected to inside vertical case 2 through the leading flank are hanging, the lower copper bar 5
One end connects and had among its body of rod the concave arc for being arranged to downward at two through the leading flank of vertical case 2 and upper copper bar 6, described perpendicular
Single-pole double-throw switch (SPDT) S and slide rheostat R1 variable resistance knob 4 are provided with below the straight side of case 2；
The vertical case 2 is internally provided with circuit, and the circuit includes power supply V, slide rheostat R1, ammeter A, hilted broadsword
Commutator S, left joint B, right connector C, protective resistance R2, the left joint B are connected and connect to the left group copper bar
One end of the protective resistance R2, the other end of the protective resistance R2 are connected with power supply V negative poles, power supply V positive poles and the cunning
Dynamic rheostat R1 one end connection, the other end of the slide rheostat R1 are connected with one end of the ammeter A, the electric current
The other end of Table A is connected with the first output end of the single-pole double-throw switch (SPDT) S, the second output end of the single-pole double-throw switch (SPDT) S
Be connected with the power supply V positive poles, the input of the single-pole double-throw switch (SPDT) S is connected with the right connector C, the right connector C with
The right group copper bar connection.
The dial plate 8 can horizontally slip on slide rail 81, adjustment position.
The setting of the concave arc in order to tangle experiment in accessory.
When the single-pole double-throw switch (SPDT) S is dialed up, ammeter A and slide rheostat R1 access circuits；Work as single-pole double throw
When switch S is centrally located, circuit disconnects, no current；When single-pole double-throw switch (SPDT) S is stirred downwards, circuit is connected, but electric current
Table A and slide rheostat R1 do not access circuit.
The filter box 1 also includes the drawer 15 for being arranged at upper surface bottom, is gone back among the leading flank of the drawer 15
Handle 16 is provided with, all accessories are placed in drawer 15 when not in use.
It is apart 8cm between the left group copper bar and right group copper bar.
It is apart 4.3cm between two concave arcs of every lower copper bar 5.It so can guarantee that electromagnet block 138 and soft iron rod 139
The distance at end close to each other is not more than 8cm.
Dry cell holder 17 is provided with below the vertical trailing flank of case 2.
The accessory includes U magnet 9, magnet cushion block 100 and motor winding 11, and the motor winding 11 is by diameter
It is enamel-covered wire thick 1mm around being made as 1.5 circles or 2.5 circles, including left the end of a thread 112, right the end of a thread 111 and square coil 113, it is described
Left the end of a thread 112 and described right the end of a thread 111 are respectively positioned at the centre on the narrow side in both sides of the square coil 113 and perpendicular to its narrow side
While stretching out, each several part of motor winding 11 is respectively positioned in same plane, described left the end of a thread 112 and described right the end of a thread
111 wipe off on the concave arc that insulated paint is respectively placed on the outside of described twice copper bars of experimental box, and the magnet cushion block 100 is positioned over institute
The upper surface of filter box 1 is stated, the U magnet 9 is positioned over the upper surface of the magnet cushion block 100 and is located at the left group
Between copper bar and the right group copper bar, the leading flank of its vertical case 2 described in face that is open, the part position of square coil 113
In in the opening of the U magnet 9.
Using above-mentioned accessory, the experiment of demonstration motor principle can be done, it is specific as follows：Stir single-pole double-throw switch (SPDT) downwards
S switches on power V, does not access slide rheostat R1, starts motor winding 11, and motor winding 11 can be persistently to turn
It is dynamic, change the sense of current or magnetic direction, the rotation direction of motor winding 11 change therewith, illustrate hot-wire coil in magnetic field
Middle stress and rotate, here it is the principle of motor.
Embodiment 4：
As shown in Fig. 4,5,6,11,12, described ampere force presentation device, including experimental box and accessory, the experimental box
Including orthogonal filter box 1 and vertical case 2, the filter box 1 is arranged at the vertical lower front of case 2 and is close to vertically
Case 2, two casees are cuboid, and middle above the vertical leading flank of case 2 to be provided with ammeter display panel 7, the ammeter shows
Show that the lower section of disk 7 is provided with slide rail 81, dial plate 8 is slidably connected on the slide rail 81, the dial plate 8 is perpendicular to vertical case 2
And it is symmetrically set with structure identical left group copper bar and right group positioned at the top of filter box 1, the lower section of dial plate 8
Copper bar, wherein left group copper bar are included in upper copper bar 6 and lower copper bar 5 in same vertical plane, and the upper copper bar 6 is perpendicular to vertical
Circuit, the other end that the leading flank and its one end of case 2 are connected to inside vertical case 2 through the leading flank are hanging, the lower copper bar 5
One end through vertical case 2 leading flank and upper copper bar 6 connect and have among its body of rod the concave arc for being arranged to downward at two, it is described
Single-pole double-throw switch (SPDT) S and slide rheostat R1 variable resistance knob 4 are provided with below the vertical side of case 2；
The vertical case 2 is internally provided with circuit, and the circuit includes power supply V, slide rheostat R1, ammeter A, hilted broadsword
Commutator S, left joint B, right connector C, protective resistance R2, the left joint B are connected and connect to the left group copper bar
One end of the protective resistance R2, the other end of the protective resistance R2 are connected with power supply V negative poles, power supply V positive poles and the cunning
Dynamic rheostat R1 one end connection, the other end of the slide rheostat R1 are connected with one end of the ammeter A, the electric current
The other end of Table A is connected with the first output end of the single-pole double-throw switch (SPDT) S, the second output end of the single-pole double-throw switch (SPDT) S
Be connected with the power supply V positive poles, the input of the single-pole double-throw switch (SPDT) S is connected with the right connector C, the right connector C with
The right group copper bar connection.
The dial plate 8 can horizontally slip on slide rail 81, adjustment position.
The setting of the concave arc in order to tangle experiment in accessory.
When the single-pole double-throw switch (SPDT) S is dialed up, ammeter A and slide rheostat R1 access circuits；Work as single-pole double throw
When switch S is centrally located, circuit disconnects, no current；When single-pole double-throw switch (SPDT) S is stirred downwards, circuit is connected, but electric current
Table A and slide rheostat R1 do not access circuit.
The filter box 1 also includes the drawer 15 for being arranged at upper surface bottom, is gone back among the leading flank of the drawer 15
Handle 16 is provided with, all accessories are placed in drawer 15 when not in use.
It is apart 8cm between the left group copper bar and right group copper bar.
It is apart 4.3cm between two concave arcs of every lower copper bar 5.It so can guarantee that electromagnet block 138 and soft iron rod 139
The distance at end close to each other is not more than 8cm.
Dry cell holder 17 is provided with below the vertical trailing flank of case 2.
The accessory includes electromagnet 13 and soft iron 14, and the electromagnet 13 includes suspension apparatus and electromagnet block 137, institute
Stating suspension apparatus includes cross hollow pipe and front and rear bar 137, and the cross hollow pipe includes montant 131 and symmetrical length
Identical and horizontally disposed left bar 133, right bar 132 are spent, wherein the left bar 133 and the right bar 132 are not communicated with, the left side
Left copper cash 134 is inserted with bar 133, is inserted with right copper cash 135 in the right horizon bar 132, the left and right copper cash length it is identical and
It is all higher than left and right pole length, the upper end of the montant 131 is provided with the second light plastic pointer 136 straight up, lower end
Horizontal connection has the front and rear bar 137, and the front and rear bar 137 is vertical with left bar 133, and the side of the electromagnet block 138 is with before
Rear bar 137 is parallel and is located at the underface of front and rear bar 137, is fixed together by rubber strip and front and rear bar 137, electromagnet block
138 two leads electrically connect with left copper cash 134, right copper cash 135 respectively, and the soft iron 14 includes soft iron rod 139 and suspention fills
Put, the suspension apparatus is identical with the suspension apparatus of electromagnet 13, and soft iron rod 139 is fixed also by rubber strip and suspension apparatus
There is phase homogenous quantities, the electromagnetism with electromagnet block 138 together and positioned at the underface of suspension apparatus, the soft iron rod 139
The left copper cash 134 and right copper cash 135 of iron 13 are respectively placed on symmetrical a pair of the concave arcs of described twice copper bars of experimental box,
The soft iron 14 is positioned on the symmetrical another pair concave arc of described twice copper bars of experimental box, the electromagnet 13 and described soft
The pointer of iron 14 is respectively positioned on the registration side of the dial plate 8.
Using above-mentioned accessory, the experiment of the interaction of demonstration power can be done, it is specific as follows：Treat the second light plastic pointer
After 136 is static, power supply V is with 4 section dry cells, the single-pole double-throw switch (SPDT) S V that switch on power is stirred downwards and (does not access slide rheostat
R1), it can see that, because electromagnet 13 and soft iron 14 attract each other, two pointers rotate backward identical radian, explanation of force simultaneously
Effect be it is mutual, and equal in magnitude, in the opposite direction.
The present embodiment is using should be ensured that the accessory being equipped on copper bar contacts well with copper bar, if loose contact,
Can be polished contact point with fine sandpaper.
Preferred embodiment of the present utility model is the foregoing is only, as long as realizing the utility model with essentially identical means
The technical scheme of purpose is belonged within the scope of protection of the utility model.
Claims (9)
1. ampere force presentation device, it is characterised in that：Including experimental box and accessory, the experimental box includes orthogonal level
Case and vertical case, the filter box are arranged at the vertical case lower front and are close to vertical case, and two casees are cuboid, described
Ammeter display panel is provided among above vertical case leading flank, slide rail, the cunning are provided with below the ammeter display panel
Dial plate is slidably connected on rail, the dial plate is perpendicular to vertical case and below the top of filter box, the dial plate
Structure identical left group copper bar and right group copper bar are symmetrically set with, wherein left group copper bar is included in same vertical plane
Interior upper copper bar and lower copper bar, the upper copper bar are connected to through the leading flank perpendicular perpendicular to the leading flank and its one end of vertical case
Circuit, the other end inside straight case is hanging, and one end of the lower copper bar is connected through the leading flank of vertical case with upper copper bar and it
Have among the body of rod and downward concave arc is arranged at two, be provided with single-pole double-throw switch (SPDT) below the vertical case side and slide variable resistance
The variable resistance knob of device；
The vertical case is internally provided with circuit, the circuit include power supply, slide rheostat, ammeter, single-pole double-throw switch (SPDT),
Left joint, right connector, protective resistance, the left joint are connected and connect to the one of the protective resistance with the left group copper bar
End, the other end of the protective resistance are connected with power cathode, and positive source is connected with one end of the slide rheostat, described
The other end of slide rheostat is connected with one end of the ammeter, the other end of the ammeter and the single-pole double-throw switch (SPDT)
The connection of the first output end, the second output end of the single-pole double-throw switch (SPDT) is connected with the positive source, the single-pole double throw
The input of switch is connected with the right connector, and the right connector is connected with the right group copper bar.
2. ampere force presentation device according to claim 1, it is characterised in that：The accessory includes spill copper cash and 4 U-shapeds
Magnet, the spill copper cash include first horizontal segment, the second horizontal segment, the 3rd horizontal segment, the first vertical section, the second vertical section,
3rd vertical section and the first light plastic pointer, the right-hand member of the first horizontal segment is hanging, left end and first vertical section
Upper end is connected, and the lower end of first vertical section is connected with the right-hand member of second horizontal segment, the left end of second horizontal segment
It is connected with the lower end of second vertical section, the upper end of second vertical section is connected with the right-hand member of the 3rd horizontal segment, institute
The left end for stating the 3rd horizontal segment is connected with the lower end of the 3rd vertical section, and the upper end of the 3rd vertical section is provided with described
One light plastic pointer, each part of spill copper cash in same vertical plane, the spill copper cash by first horizontal segment and
3rd horizontal segment is cross-placed on the concave arc on the outside of described twice copper bars of experimental box, and the first light plastic pointer is located at the finger
The registration side of needle plate, 4 U magnet homopolarities are arranged side by side to be erected in described in the upper surface of the filter box and opening face
The leading flank of straight case, 4 U magnets are respectively positioned between the left group copper bar and the right group copper bar, the spill
Second horizontal segment of copper cash is positioned in the opening of 4 U magnets.
3. ampere force presentation device according to claim 1, it is characterised in that：The accessory includes U magnet, magnet cushion block
With cylindrical iron, the magnet cushion block is positioned over the upper surface of the filter box, and the U magnet is positioned over the magnet pad
The upper surface of block and between the left group copper bar and the right group copper bar, the front side of its vertical case described in face that is open
Face, the cylindrical iron are cross-placed on experimental box two above copper bar and are located at institute perpendicular to copper bar, the cylindrical iron
The part among left group copper bar and the right group copper bar is stated to be also located in the opening of U magnet.
4. ampere force presentation device according to claim 1, it is characterised in that：The accessory includes U magnet, magnet cushion block
And motor winding, the motor winding is by enamel-covered wire thick a diameter of 1mm around being made as 1.5 circles or 2.5 circles, including left line
Head, right the end of a thread and square coil, described left the end of a thread and described right the end of a thread are respectively in the narrow side in both sides of the square coil
Between and stretch out perpendicular to its narrow side, the motor winding each several part is respectively positioned in same plane, described left the end of a thread and
Described right the end of a thread is wiped off on the concave arc that insulated paint is respectively placed on the outside of described twice copper bars of experimental box, and the magnet cushion block is placed
In the upper surface of the filter box, the U magnet is positioned over the upper surface of the magnet cushion block and is located at the left group copper
Between bar and the right group copper bar, the leading flank of its vertical case described in face that is open, the square coil part is located at the U
In the opening of shape magnet.
5. ampere force presentation device according to claim 1, it is characterised in that：The accessory includes electromagnet and soft iron, institute
Stating electromagnet includes suspension apparatus and electromagnet block, and the suspension apparatus includes cross hollow pipe and front and rear bar, the cross
Frame hollow pipe includes montant identical with symmetrical length and horizontally disposed left bar, right bar, wherein the left bar and the right side
Bar is not communicated with, and left copper cash is inserted with the left bar, and right copper cash is inserted with the right horizon bar, and the left and right copper cash length is identical
And left and right pole length is all higher than, it is horizontal even that the upper end of the montant is provided with the second light plastic pointer straight up, lower end
The front and rear bar is connected to, the front and rear bar is vertical with left bar, and the side of the electromagnet block is parallel with front and rear bar and positioned at front and rear
The underface of bar, be fixed together by rubber strip and front and rear bar, two leads of electromagnet block respectively with left copper cash, right copper cash
Electrical connection, the soft iron include soft iron rod and suspension apparatus, and the suspension apparatus is identical with the suspension apparatus of electromagnet, and soft iron
Rod is fixed together also by rubber strip and suspension apparatus and is located at the underface of suspension apparatus, the soft iron rod and electromagnet block
With phase homogenous quantities, it is symmetrical that the left copper cash and right copper cash of the electromagnet are respectively placed in described twice copper bars of experimental box
On a pair of concave arcs, the soft iron is positioned on the symmetrical another pair concave arc of described twice copper bars of experimental box, the electromagnet
The registration side of the dial plate is respectively positioned on the pointer of the soft iron.
6. ampere force presentation device according to claim 1, it is characterised in that：The filter box, which also includes, is arranged at upper table
The drawer of face bottom, handle is additionally provided among the leading flank of the drawer.
7. ampere force presentation device according to claim 1, it is characterised in that：Left group copper bar and right group the copper bar it
Between at a distance of being 8cm.
8. ampere force presentation device according to claim 1, it is characterised in that：Between two concave arcs of every lower copper bar apart
For 4.3cm.
9. ampere force presentation device according to claim 1, it is characterised in that：It is provided with below the vertical case trailing flank dry
Battery placement box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720640990.4U CN207134027U (en) | 2017-06-05 | 2017-06-05 | Ampere force presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720640990.4U CN207134027U (en) | 2017-06-05 | 2017-06-05 | Ampere force presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207134027U true CN207134027U (en) | 2018-03-23 |
Family
ID=61631748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720640990.4U Expired - Fee Related CN207134027U (en) | 2017-06-05 | 2017-06-05 | Ampere force presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207134027U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761153A (en) * | 2018-06-26 | 2018-11-06 | 关佳琳 | It is a kind of to amplify the ammeter regarding number |
| CN109036047A (en) * | 2018-09-05 | 2018-12-18 | 天津中德应用技术大学 | Magnetic-type Quantitative demonstration apparatus about Ampere force |
-
2017
- 2017-06-05 CN CN201720640990.4U patent/CN207134027U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761153A (en) * | 2018-06-26 | 2018-11-06 | 关佳琳 | It is a kind of to amplify the ammeter regarding number |
| CN109036047A (en) * | 2018-09-05 | 2018-12-18 | 天津中德应用技术大学 | Magnetic-type Quantitative demonstration apparatus about Ampere force |
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Granted publication date: 20180323 |