CN2079785U - Combined motor teaching aid - Google Patents

Abstract

The utility model relates to a combined motor teaching aid. The left end of a machine base is provided with the frame of a self-contained battery, the back side of the machine base is provided with conducting strips of the batteries which are connected in series, and the front side is provided with conductor wires extracted form a power source. The both ends of a rotating shaft is respectively sheathed with positioning distance sleeves, the both sides of a rotor is provided with a stator, and each of the both sides of a commutator is provided with an electrical brush. The rotor and the stator can be arranged into various structures and shapes and can reciprocally replace. The stator can be composed of a permanent magnet. One end of a rotating shaft can be fixedly connected with a blade wheel or can be provided with a cranking bar.

Description

Combined motor teaching aid

The utility model relates to a kind of combined type motor instructional device, this device is specially adapted to the motor rotary principle is done the demonstration of imagery, this apparatus structure is simple especially, only form by the member of the most basic necessity, and be arranged to start to manufacture, be assembled into the device that rotates or be broken into the basic building block that can reconfigure or replace of can switching on, its rotor and stator are arranged to have multiple shape and parameter can be for selecting for use.

Up to now, for general motor, generator and other its principle of work of rotating motor with each is such as main members such as rotor, stator, commutator and coils, still be difficult for making suitable demonstration, promptly be difficult for demonstration by imagery its principle of work is described.Because these members all are contained in the casing, it is visible having only the minority member, so just more increases its difficulty.In addition, the known teaching method always will could illustrate the major function that is had with many instructional devices in this field of rotating motor, thereby teaching fund is increased thereupon, and income is little really concerning the student, for example its effect just illustrates principle of work by demonstration as the teaching aid of class demonstration, just deepens understanding to its principle by direct feel.Comparatively complicated as the general structure of teaching aid, and only limit on the classroom, demonstrate, so just be difficult for bringing out the student and form other design, and then explore the possibility of its enforcement, obviously, this situation is totally unfavorable to intelligence development or further in-depth understanding.The teaching aid stock size of using as class demonstration is bigger on the other hand, price is higher, thereby be difficult for spreading among the student, and be regarded as being rich in interesting teaching aid, because no matter the student is on the classroom or is having no chance by starting assembled component after school, make it to become wheelwork electricity consumption or generating, therefore can not improve the ability of student its understanding and making.

Simultaneously, the more important thing is, existing this field instructional device can not make the teacher have an opportunity to illustrate the change wherein parameter and the shape of certain member, can produce what kind of influence to wheelwork electricity consumption or generating, and this also is disadvantageous to the intellectual development that edifies the student.

American documentation literature us3,080,663 discloses a kind of teaching aid that is used to illustrate the motor rotary principle, and this teaching aid is made up of the main member of conventional motors, for example comprises the rotor and the members such as stator, commutator, brush, support, support and rotating shaft that are wound with coil.Exactly, these members adopt on the conventional motors basically, and its structure is compared more complex with the member of the most basic necessity of only demonstrating its rotary principle, and this can not start to manufacture concerning the student especially voluntarily.In addition, this teaching aid also provides available for different connection modes or principle to the coil of dipolar rotor and three utmost point rotors, illustrating that it develops on the basis of rotary principle transmission principle, its scope of application only limits to do the imagery demonstration as classroom instruction, and can not spread among the student, deepen understanding by demonstration repeatedly, it is required starts the scope of manufacturing and just is confined to the connection of coil, can not excite with coil to connect relevant inventive concept.

Although have ready-made such as can be in the market for the micromotor that is configured on the toy, but its main member all is contained in the casing, it is visible having only a rotating shaft, can fix other actuated elements on it, obviously, this motor can not illustrate its principle of work, so can not use as instructional device.

Task of the present utility model is, a kind of combined type motor instructional device is proposed, this apparatus structure is simple, be easy to assembling or break, size is less, price is extremely low, be easy to popularize, can start assembling voluntarily for the student, and its main member is provided with different parameters and shape, can be for selecting for use.

The technical scheme of finishing above-mentioned the utility model task is, make this instructional device comprise a support, rotating shaft, rotor, stator, power supply, commutator, stator frame and two brushes and two supports, its rotor and stator can have multiple planform, and the coil turn on it also can have multiple parameter specification.

The favourable characteristics of the utility model are, structure is simple especially, only form by the member of the most basic necessity, these members are all easily manufactured, thereby can make when ready-made confession is assembled and match, or start self-control without hesitation, for example on rotor and stator, distinguish winding around, by manufacturing or assembling, can improve on the one hand the student to the understanding of motor rotary principle with manufacture technical ability, by breaking, can reconfigure or replace each basic building block on the other hand, select possibility for use for exploration preferred plan provides.In addition, this instructional device applicability is wide, inside and outside the classroom, all can use.Therefore, can think that this device closely is attached in the intelligence development in the process of doing demonstration.

By means of embodiment shown in the drawings the utility model machine teaching device is further elaborated now.

Wherein:

Fig. 1 represents a kind of front elevational schematic of electromagnetic motor,

Fig. 2 represents that I-its stator of I line position of a kind of Fig. 1 of being equivalent to is equipped with the motor schematic side view of permanent magnet,

The various stator perspective diagrams of Fig. 3-5 expression for displacement,

Fig. 6-9 expression various for rotor perspective diagram displacement, that have commutator and

The various rotor perspective diagrams of Figure 10-14 expression for displacement,

As shown in Figure 1, rotating shaft 3 is bearing between the support 2 at two ends, and support 2 then is to be fixed on the support 1.Support 1 adopts a plank, to help using various members are installed thereon apace such as securing members such as wood screw, drawing pins, for example the left end of support 1 is provided with the bulkhead 14 of self-contained battery 13 usefulness, its trailing flank is provided with the conducting strip 15 of series-connected cell 13 usefulness, and leading flank is provided with the lead 16,17 of drawing from power supply.Rotating shaft 3 rotor 7 that is fixedly connected sequentially is from right to left followed a fixedly connected commutator 8, wherein fixedly connectedly comprises bonding or the soldering mode.Dispose the commutator segment 9 that is equivalent to the rotor number of poles on the commutator 8 in uniform way, be wound with the thread coil of enamel-cover on the rotor 7, coil number is equivalent to its son number of poles of 7 that rotates, and its exit then is connected with corresponding commutator segment 9 respectively.In addition, overlap useful positioning spacer made of insulating material 4,11 at the two ends of rotating shaft 3 respectively, thereby make rotor 7 and commutator 8 that a fixing position respectively be arranged between two supports 2.At stator 5 of the both sides of described rotor 7 configuration, wherein stator 5 is fixed on the support 1 by a stator frame 6, and is wound with a coil between stator 5 stator frames 6.Respectively dispose a brush 10 in the both sides of described commutator 8, wherein this brush 10 adopts the rubber-like copper sheet, and its upper end gently is pressed on the commutator segment 9 of commutator 8 with the plane, and the lower end then is fixed on the support 1 with flanging.

An output terminal of described stator coil is connected with one of them brush 10, and its other end is arranged to freely, and has certain length, for example 100 millimeters.Described lead 16 of drawing from power supply should have insulation course except that two tip nodes, 17 in lead is to be arranged to sheet, and is fixed on the leading flank of support 1.When the free end of stator coil sticked on the sheet lead 17, entire circuit was switched on, and rotor 7 just rotates with certain speed, that is to say that this structure is equivalent to a contactor the simplest.

Obviously, demonstrate the motor rotary principle by means of this instructional device, its effective income is big to be that other same devices are incomparable.Particularly price is extremely low, easily is accepted, thereby helps penetration and promotion.

Fig. 2 illustrates a kind of stator frame, and two blocks of permanent magnets are equipped with in its both sides, and this explanation stator has two kinds, be provided with coil for electromagnetic machine, what do not have coil then is called magneto.No matter be the sort of motor, if at the fixedly connected unshowned impeller of an end of its rotating shaft 3 or a crank is set, oppositely blow or oppositely shake by wind-force with hand, then this motor promptly becomes a generator, its output voltage is about 1.2～9V, can drive miniature bulb or small machine.

Stator shown in Figure 3 be exactly among Fig. 1 the sort of motor adopt, its coil is the bottom around this stator.

A kind of stator shown in Fig. 4, its coil are the top around this stator.

A kind of stator shown in Fig. 5, its coil are the sidepieces around this stator.

Above-mentioned various stator in use can the phase double replacement.

Shown in Fig. 6 is the two poles of the earth rotor, and this rotor constitutes by two matrix are opposed, also can insert and put some plain films between two matrix.Be wound with two coils on this rotor, wherein two corresponding commutator segments 9 are connected on an end of each coil and the commutator 8.

Shown in Fig. 7 is one three utmost point rotor, this rotor by three groups each two matrix are uniform constitutes, be wound with three coils on this rotor, wherein three corresponding commutator segments 9 are connected on an end of each coil and the commutator 8.

Shown in Fig. 8 is one four utmost point rotor, and this rotor vertically is made of mutually four groups of each two matrix, is wound with four coils on this rotor, and wherein four corresponding commutator segments 9 are connected on an end of each coil and the commutator 8.

A kind of rotor shown in Figure 9 is provided with the uniform gear teeth in the radially outer rim of an one end face, and coil then is on the middle part.

A kind of rotor shown in Figure 10 is made of a right cylinder.

A kind of rotor shown in Figure 11 is made of a rectangular parallelepiped.

A kind of rotor shown in Figure 12 is one and is ［ the section bar of font.

A kind of rotor shown in Figure 13 is a section bar that is zigzag.

A kind of rotor shown in Figure 14 is with a kind of iron wire bending forming.

Above-mentioned various rotor can be matched the phase double replacement in use.

Comprehensively above-mentioned, be not difficult to know by inference, can also develop for the structure of stator and rotor and shape and more scheme.

Claims (6)

1, a kind of combined type motor instructional device, comprise a support, a rotating shaft, a rotor, a stator, a stator frame, a power supply, a commutator, two brushes and two supports, wherein shaft support is between the support at two ends, support then is to be fixed on the support, it is characterized in that, the left end of support (1) is provided with the bulkhead (14) of a self-contained battery (13) usefulness, its trailing flank is provided with the conducting strip (15) of a series-connected cell (13) usefulness, leading flank is provided with the lead (16 of drawing from power supply, 17), rotating shaft (3) be fixedly connected sequentially from right to left a rotor (7) and a commutator (8), the two ends of rotating shaft (3) are with a positioning spacer (4 respectively, 11), at the both sides of described rotor (a 7) configuration stator (5), respectively dispose a brush (10) in the both sides of described commutator (8), an output terminal of described stator coil is connected with one of them brush (10), its other end is arranged to freely, constitutes a contactor with lead (17).

2, by the device of claim 1, it is characterized in that rotor and stator can be arranged to various planforms, the coil turn that twines on it also can have various parameter specifications, and separately can the phase double replacement.

3, by the device of claim 1, it is characterized in that rotor can be arranged to multipole, the number of poles of its rotor quite thereon around coil number.

By claim 1 or 2 device, it is characterized in that 4, the stator that is made of permanent magnet is coiling not on it.

By claim 1 or 2 device, it is characterized in that 5, stator coil can be by bottom, top or the sidepiece of different structure shape stator under it.

By the device of claim 1, it is characterized in that 6, an end of rotating shaft (3) can a fixedly connected impeller or a crank is set.

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