CN208061515U - A kind of dc motor, double current generator demonstrating device - Google Patents
A kind of dc motor, double current generator demonstrating device Download PDFInfo
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- CN208061515U CN208061515U CN201820187865.7U CN201820187865U CN208061515U CN 208061515 U CN208061515 U CN 208061515U CN 201820187865 U CN201820187865 U CN 201820187865U CN 208061515 U CN208061515 U CN 208061515U
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- slip ring
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- holder
- electric slip
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Abstract
The utility model discloses a kind of dc motors,Double current generator demonstrating device,Including pedestal,Holder,Rotor wire frame,The holder is fixed on pedestal,The rotor wire frame is set between pedestal and holder,And it is rotatablely connected between pedestal and holder,The rotor wire frame includes single turn or multiturn coil,For electric slip ring,Shaft,The single turn or multiturn coil are connect with for electric slip ring,The shaft passes through single turn or multiturn wire frame for electric slip ring and top to extend in the through-hole in blind hole and overhead support on pedestal,At least one set of heterosexual magnet group is respectively arranged on the holder of the coil both sides on sustained height,It is provided with binding post on the pedestal for electric slip ring both sides,It is described for being respectively arranged with brush between electric slip ring and binding post,It is connected between one end and binding post of the brush,The other end and for being connected between electric slip ring.The utility model solves that existing teaching aid demonstration device is complicated, the problem of direct-view property difference.
Description
Technical field
The utility model is related to teaching equipment technical field, specially a kind of dc motor, double current generator principle
Demonstration device.
Background technology
The existing DC electromotor principle in middle school physical experiment room and AC generator principle demonstrator are complicated, are
Multiturn coil, and coil is mostly package structure, has difference with the single-turn circular coil in textbook schematic diagram, and coil dimension is smaller, directly
It is poor depending on property.The subject that electricity and electromagnetism are originally relatively abstracted, educational aid on the market cannot be satisfied teaching need again
It asks.
Utility model content
（One）The technical issues of solution
In view of the deficiencies of the prior art, the utility model provides a kind of dc motor, double current generator principle is drilled
Show device, solves that existing teaching aid demonstration device is complicated, the problem of direct-view property difference.
（Two）Technical solution
To achieve the above object, the utility model provides the following technical solutions：
A kind of dc motor, double current generator demonstrating device, including pedestal, holder, rotor wire frame, the holder
It is fixed on pedestal, the rotor wire frame is set between pedestal and holder, and is rotatablely connected between pedestal and holder, described
Rotor wire frame includes single turn or multiturn coil, for electric slip ring, shaft, and the single turn or multiturn coil are connect with for electric slip ring, institute
Stating shaft passes through single turn or multiturn wire frame for electric slip ring and top to extend to the through-hole in blind hole and overhead support on pedestal
It is interior, at least one set of heterosexual magnet group is respectively arranged on the holder of the coil both sides on sustained height, the power supply is slided
Binding post is provided on the pedestal of ring both sides, it is described for being respectively arranged with brush between electric slip ring and binding post, the brush
It is connected between one end and binding post, the other end and for being connected between electric slip ring.
Preferably, described for electric slip ring includes the upper slip ring being arranged on the outside of cylinder and lower slip ring, the upper slip ring to
Under be extended with slide plate, slide plate is extended on the circumferential direction that glides, between slide plate and opposite upper and lower slip ring that upper and lower slip ring extends not
Contact, connect with upper slip ring and lower slip ring respectively for two coil ports on electric slip ring.
Preferably, the brush is v-shaped structure, and one end of the brush is fixedly connected with binding post by fastener, separately
One end and for being connected between electric slip ring.
Preferably, it is both provided with insulating layer on the shaft and coil.
Preferably, it is respectively arranged with magnet polarities Sign Board on the both sides of the holder.
Preferably, the both sides of the coil are provided with direction arrow, are flexibly connected between the direction arrow and coil.
Preferably, the binding post of the both sides is connect with sensitive ammeter or power supply respectively.
（Three）Advantageous effect
The utility model provides a kind of dc motor, double current generator demonstrating device.Have following beneficial to effect
Fruit：
（1）, the utility model by single turn or multiturn coil, for the demonstration of electric slip ring, shaft, brush and binding post composition
Device, structure setting is simple, similar to the bookish dc generator of high school physics and alternating current generator single-turn circular coil structure, directly
The property seen is good, visibility is big, understands and remembers convenient for student during demonstration, the study improved the quality of teaching with student is emerging
Interest；
（2）, setting magnet polarities Sign Board be tow sides mark, the magnet polarities direction instruction phase with every side
Together, convenient for imparting knowledge to students on student viewing and classroom, direction arrow and power suffered on every lateral coil, current direction, magnetic direction one
Compound left hand rule is caused, and the direction of direction arrow is adjustable, convenient for teaching；
（3）, setting is divided into two parts of upper and lower slip ring for electric slip ring, be thereon insulation among slip ring and lower slip ring
On the one hand cylindrical structure can reduce the contact resistance of brush, electricity on the other hand can be reduced when demonstrating motor principle
Stream loss, and play the role of commutator；
（4）, setting V-arrangement brush can with for Elastic Contact between electric slip ring, the fastener constructions bolt of setting and
Butterfly hand nutting structure can the elastic adjusting between binding post, facilitate moving up and down for brush.
Description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model main structure diagram；
Fig. 3 is the utility model brush and binding post enlarged structure schematic diagram；
Fig. 4 is the utility model direction arrow overall structure diagram；
Fig. 5 is the utility model direction arrow main structure diagram；
Fig. 6 is enlarged structure schematic diagram at the utility model A；
Fig. 7 is the utility model rotor wire frame overall structure diagram；
In figure：1 pedestal, 1-1 binding posts, 1-2 blind holes, 1-3 protrusions, 2 holders, 2-1 magnet, 2-2 magnet polarities Sign Board,
3 shafts, 4 brushes, 4-1 bolts, 4-2 butterfly hands nutting, 5 for slip ring under electric slip ring, the upper slip rings of 5-1,5-2,5-3 cylinders,
5-4 slide plates, 6 coils, 6-1 direction arrows, 6-2 buckles.
Specific implementation mode
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
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1：
As shown in Figures 1 to 6, the utility model provides a kind of technical solution：
A kind of dc motor, double current generator demonstrating device, including pedestal 1, holder 2, rotor wire frame, the branch
Frame 2 is fixed on pedestal 1, which is characterized in that the rotor wire frame is set between pedestal 1 and holder 2, and with pedestal 1 and branch
It is rotatablely connected between frame 2, the rotor wire frame includes single turn or multiturn coil 6, for electric slip ring 5, shaft 3, the single turn or more
Circle coil 6 is connect with for electric slip ring 5, and the shaft 3 passes through the single turn or multiturn coil 6 for electric slip ring 5 and top to extend to bottom
In the through-hole on blind hole 1-2 and overhead support on seat 1, it is respectively set on sustained height on the holder 2 of 6 both sides of the coil
There is at least one set of heterosexual magnet 2-1, binding post 1-1 is provided on the pedestal 1 for 5 both sides of electric slip ring, the power supply is slided
It is respectively arranged with brush 4 between ring 5 and binding post 1-1, is connected between one end and binding post 1-1 of the brush 4, it is another
It holds and for being connected between electric slip ring 5.
Operation instruction：
DC electromotor principle is demonstrated：Single-turn circular coil is rack-mount, two brush heights of adjusting to intermediate semicircle
The commutator position of ring, with conducting wire by power supply and brush or binding post（Binding post is conductive material）It is connected, closure switch can
Observe that single-turn circular coil rotates.Direction arrow group is mounted on wire frame side, as shown in Figure 1, can analysis of magnetic with left hand rule
The relationship in electrical current direction, the magnetic field force induced direction of wire frame in field direction, wire frame.Change group of magnets quantity, use multiturn wire frame instead
Demonstration, it is found that wire frame rotating speed is different, and under same magnetic field, current conditions, multiturn wire frame rotating speed is very fast, therefore, it is straight in practicality
There is very multiturn coil in galvanic electricity motivation.
Double current generator principle demonstration：
Generate direct current：Single-turn circular coil is rack-mount, and adjusting brush height, will be clever with conducting wire to commutator position
Quick ammeter is connected with brush or binding post, rotating coil, and ammeter pointer can be observed and obviously swing aside, illustrate line
What is generated in circle is direct current, and rotating speed becomes larger, and ammeter pointer drift angle can become larger, and shows that induced current size has with wire frame rotating speed
Close, install the corresponding direction arrow of the right-hand rule, as shown in Figure 1, can use the right-hand rule, can study induced current direction,
Relationship between magnetic direction, the wire frame cutting magnetic induction line direction of motion；Wire frame changes magnet quantity, uses instead in same rotational speed
Multiturn wire frame is demonstrated, it is found that the size of current of generation will be different.This shows induced current size and magnetic field power, line
Circle the number of turns is related, and in the case of same rotational speed, same magnetic field, the electric current generated in multiturn coil is strong, therefore, have in actual generator more
Circle circle.
Generate alternating current：Single-turn circular coil is rack-mount, brush height is adjusted to two whole slip ring positions, uses conducting wire
Sensitive ammeter is connected with brush, rotating coil can be observed ammeter pointer and obviously swing, but drift angle very little, say
Weaker alternating current is generated in open-wire line circle.The corresponding direction arrow group of the right-hand rule is installed, as shown in Figure 1, fixed with the right hand
Can then study magnetic direction, induced current direction, the wire frame cutting magnetic induction line direction of motion relationship；Multiturn wire frame is used instead again to drill
Show, it is found that deflection angle of indicator becomes larger, and shows to produce stronger alternating current in multiturn coil.Therefore have in the generator in practicality
Multiturn circle.
Single-turn circular coil：Material diameter 6mm copper tubes（Copper pipe in common air-conditioning, wall thickness 0.5mm）It is made 48 lis high
The wide 33 centimetres of single-turn circular coils of rice, lower end is connected with for electric slip ring.As DC electromotor principle demonstration device in use, to make list
Circle rotor coil rotates, and must have a constant current in coil（It is more to survey 3A）And it could be obtained in compared with high-intensity magnetic field enough
Turning moment, through test of many times, final determination uses hollow copper tubing as coil method, is larger visual in order to obtain first
Degree, secondly quality more solid than same specification is small, and coil, which starts, to be just easy, the third is there is larger current will not by situation lower coil
Temperature is too high, then has certain degree of hardness, it is ensured that teaching aid performance is stablized.This single-turn circular coil, structure letter consistent with schematic diagram in textbook
It is single, intuitive, it is convenient to left hand rule, the teaching of right-hand rule correlation to be carried out, to more fully understand dc motor and to exchange
Generator operation principle.
Multiturn coil：With diameter 1mm copper enameled wires around 12 circles, secured, the Gao Kuan that is bundled into cylindric consolidation with nylon filament
Identical as single turn, lower end is also connected with for electric slip ring.When demonstration d. c. motor, double current generator principle, demonstrated with single turn
Effect is compared, when as motor rotor rotating speed faster, when as generator amature, the induced current bigger of generation.
For electric slip ring：Its function has DC commutator and exchanges slip ring effect.5 centimetres of diameter of material, high 9 centimetres of red coppers
Pipe, intermediate timber and Ab glue bonds are fixed, it is ensured that teaching aid has some strength, durable.Two entire annulus of its upper and lower ends,
When respectively with two brush contacts, play exchange slip ring；Two semicircular rings of interlude are the slide plate extended, when it is respectively with two
It is DC commutator when brush contact, it can demonstration d. c. motor and dc generator principle.
Shaft：Material is the straight stick of 301 stainless steels, not easy magnetization, when can avoid dismounting in this way and magnet Interaction Force,
The good hardness of elasticity is high, axis and coil and power supply interannular plastic tube, AB glue be adhesively fixed and insulation.Such circle is straight
Stick reduces rotation eccentric phenomena, improves teaching aid stability.
Magnets of stator：With model N32 neodymium iron boron rectangle strong magnets, absorption is placed on iron bar holder magnetic pole in the same direction, with
Attraction between magnet and sheet iron strip does not have to other workpiece fixed magnets, stable structure, and magnetic pole dismounting also side is exchanged when experiment
Just, the opposite inside magnetic pole of two groups of magnets of stator is synonyms pole, constitutes magnetic field needed for experiment, and when making makes rotor coil as possible
Nearest gap is smaller between magnets of stator, is can get in this way compared with high-intensity magnetic field, increases experiment effect.To increase visual angle, with magnet mark
Will board indicates the magnetic pole of two groups of magnet, makees hinge with 304 stainless steel substrates and is fixed on holder, used time expansion, when not used can be tight
Patch holder is packed up.
Holder：It is mounted on the base with the rectangular frame of galvanized iron band, with fixed rotating shaft and magnet, non-experimental period,
Two coils are stored, work as handle when mobile, hardness is higher, is unlikely to deform, and performance is stablized.
Pedestal：Deal board can be selected in material, and quadrangle is mounted with that four rubber feets, feet play vibration damping, support surely below
It is set for using.Center above plank has a groove to be either provided with tapered protrusion and is used to drive shaft or support column to rotate,
Shaft lower end wears into pointed or matches with bulge-structure, places wherein, and coil rotation is subject to that friction is small, wire frame
Rotation is easy.
Direction arrow：26 centimetres wide 8 centimetres of arrows for indicating direction, Superscript letters B are grown with the pp plate of material of thick 15mm
Indicate coil side residing for magnetic direction；Marking-up mother F's is used to indicate the ampere force direction that coil side is subject to；Marking-up mother i's
Indicate coil side in by current direction；The expression coil side cutting magnetic induction line direction of motion of marking-up mother V, this two kinds of arrow groups
When carrying out left hand rule and the right-hand rule is imparted knowledge to students, during teacher is hand held, when being detached from other experiment equipments, coordinates in textbook and insert
Figure, can carry out qualitative analysis, judge magnetic direction, current direction, ampere force direction, cutting magnetic induction line direction of motion relationship.?
When carrying out dc motor, double current generator theory teaching, more intuitively to analyze and determine magnetic direction, electricity residing for coil side
Flow direction, ampere force direction, cutting magnetic induction line direction of motion relationship.
Brush：As shown in figure 3, inputting critical component as dc motor electric current, should be come into full contact with supply rings, two
There is certain pressure between person, contact resistance is just small, could ensure the smooth input coil of supply current and obtain a determined power；Due to list
The Ampere force that circle is subject to is smaller, and brush is slightly larger to the pressure of supply rings, and the frictional resistance that coil is subject to, cannot be continuous with regard to big
Rotation, as demonstration teaching aid, understands brush, size will have a certain size, and confession is both ensured to reach to allow student to see
Electricity, and frictional resistance can be made smaller and have the requirement at certain visual angle, brush selection resistivity is small, elastic good but hardness is little, resistance to
Mill, resistance to burning, rectangular-bar copper are converted into V-arrangement as brush contact part, and thick copper bar is converted into V-arrangement and opens two holes, with 304 CARBURIZING FURNACE FOR STAINLESS FASTENERs
Nail and its mating butterfly hand nutting are fastened on copper, Cu cable terminal, as shown, brush can up and down adjustment, be fixed on needs
Position, can also rotate horizontally the pressure between adjusting and supply rings, it is ensured that not only power but also make supply rings clockwise and anticlockwise
Rotation is by smaller resistance.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including a reference structure ", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of dc motor, double current generator demonstrating device, including pedestal（1）, holder（2）, rotor wire frame, it is described
Holder（2）It is fixed on pedestal（1）On, which is characterized in that the rotor wire frame is set to pedestal（1）And holder（2）Between, and with
Pedestal（1）And holder（2）Between be rotatablely connected, the rotor wire frame includes single turn or multiturn coil（6）, for electric slip ring（5）, turn
Axis（3）, the single turn or multiturn coil（6）With for electric slip ring（5）Connection, the shaft（3）Across for electric slip ring（5）The top and
Single turn or multiturn coil（6）Extend to pedestal（1）On blind hole（1-2）In the through-hole on overhead support, the coil（6）
The holder of both sides（2）On at least one set of heterosexual magnet is respectively arranged on sustained height（2-1）, described for electric slip ring（5）
The pedestal of both sides（1）On be provided with binding post（1-1）, described for electric slip ring（5）With binding post（1-1）Between be respectively arranged with electricity
Brush（4）, the brush（4）One end and binding post（1-1）Between connect, the other end with for electric slip ring（5）Between contact
Connection.
2. a kind of dc motor according to claim 1, double current generator demonstrating device, it is characterised in that：Institute
It states for electric slip ring（5）Including being arranged in cylinder（5-3）The upper slip ring in outside（5-1）With lower slip ring（5-2）, the upper slip ring
（5-1）Slide plate is extended downwardly（5-4）, lower slip ring（5-2）Slide plate is upwardly extended（5-4）, slide plate that upper and lower slip ring extends with
It is not contacted between opposite upper and lower slip ring, for electric slip ring（5）On two coils（6）Port respectively with upper slip ring and lower slip ring
Connection.
3. a kind of dc motor according to claim 1, double current generator demonstrating device, it is characterised in that：Institute
State brush（4）For v-shaped structure, the brush（4）One end and binding post（1-1）Pass through butterfly hand nutting（4-2）It is fixed to connect
Connect, the other end with for electric slip ring（5）Between connect.
4. a kind of dc motor according to claim 1, double current generator demonstrating device, it is characterised in that：Institute
State shaft（3）And coil（6）On be both provided with insulating layer.
5. a kind of dc motor according to claim 1, double current generator demonstrating device, it is characterised in that：Institute
State holder（2）Both sides on be respectively arranged with magnet polarities Sign Board（2-2）.
6. a kind of dc motor according to claim 1, double current generator demonstrating device, it is characterised in that：Institute
State coil（6）Both sides be provided with direction arrow（6-1）, the direction arrow（6-1）With coil（6）Between be flexibly connected.
7. a kind of dc motor according to claim 1, double current generator demonstrating device, it is characterised in that：Two
The binding post of side（1-1）It is connect respectively with sensitive ammeter or power supply by conducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820187865.7U CN208061515U (en) | 2018-02-05 | 2018-02-05 | A kind of dc motor, double current generator demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820187865.7U CN208061515U (en) | 2018-02-05 | 2018-02-05 | A kind of dc motor, double current generator demonstrating device |
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| Publication Number | Publication Date |
|---|---|
| CN208061515U true CN208061515U (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820187865.7U Active CN208061515U (en) | 2018-02-05 | 2018-02-05 | A kind of dc motor, double current generator demonstrating device |
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| Country | Link |
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| CN (1) | CN208061515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556043A (en) * | 2019-10-09 | 2019-12-10 | 上海宽射科技有限公司 | Dual-purpose generator rotor and experimental device thereof |
-
2018
- 2018-02-05 CN CN201820187865.7U patent/CN208061515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556043A (en) * | 2019-10-09 | 2019-12-10 | 上海宽射科技有限公司 | Dual-purpose generator rotor and experimental device thereof |
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