CN2169243Y

CN2169243Y - Linear DC motor with multiple electrodes

Info

Publication number: CN2169243Y
Application number: CN 93237734
Authority: CN
Inventors: 朱德明
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-08
Filing date: 1993-10-08
Publication date: 1994-06-15
Anticipated expiration: 2003-10-08

Abstract

The utility model relates to a multipole homopolar type linear direct current motor. The magnetic poles of the motor are composed of magnet cores and magnetic boots. The number of the magnetic poles is more than two and all the magnetic poles are fixed to an inner iron core. All magnetic boots have the same polarity which is different from the polarity of an outer iron core. The outer iron core is sheathed outside the magnetic boots, and an airgap is kept between the outer iron core and the magnetic boots. A firm integration type secondary coil wound by insulated wires of high intensity is arranged at the lower part of the airgap. Clearances are kept among the coil, the magnetic boots and the outer iron core. Support frames are arranged at the upper part of the secondary coil and move together in the airgap along a guide track. An iron bottom cap making the magnetic field form a loop is arranged at the bottom of the outer iron core of the motor, and the conductor wire leading holes of a direct current power supply are arranged in the iron bottom cap.

Description

Linear DC motor with multiple electrodes

Multipole homopolarity formula linear DC motor is directly used in the mechanism of moving linearly.

Present applied linear motor belongs to linear asynchronous motor more, because this linear asynchronous motor speed governing difficulty, efficient and power factor are all lower, straight-line speed is also lower, therefore used power supply is restricted, and range of application also has been subjected to influence.

The purpose of this utility model is to provide a kind of multipole homopolarity formula linear DC motor.

The purpose of this utility model solves by following technical proposals: the magnetic pole of this motor is that magnetic core 1 and magnetic boots 2 constitute, magnetic pole is more than two, they are fixed on the inner iron core 3 equably, and all magnetic boots 2 are same polarity, and this polarity is the opposite sex with outer unshakable in one's determination 4 polarity; Outer unshakable in one's determination 4 are sleeved on magnetic boots 2 outsides, leave air gap between outer iron core 4 and the magnetic boots 2; Firm whole shape secondary coil 5 by the coiling of high strength insulated conductor is housed in the bottom of this air gap, all leaves the gap between this secondary coil 5 and the magnetic boots 2 and outer unshakable in one's determination 4; Secondary coil 5 tops are provided with support 7, and they can together move between air gap along guide rail 8; On the thinner cylinder in inner iron core 3 lower ends and outer unshakable in one's determination 4 yoke portion 9 ends the iron bottom cap 10 that makes formation loop, magnetic field is housed, iron bottom cap is provided with the fairlead of DC power supply lead, the above has just constituted this multipole homopolarity formula linear DC motor.

The utility model is compared the beneficial effect that is had with background technology:

1, the utility model proves by actual tests, because its usefulness is direct current, so it has higher efficient and power factor.

2, the utility model structure uniqueness, its magnetic resistance of the magnetic circuit of formation is very little, can produce high space rate; Starting, moving aspects such as speed governing and braking, all be better than existing other linear motor.

3, the utility model theory structure is simple, both can be applied to do reciprocating linear motion mechanically, can be applicable to again in the emission of noiseless cannon, can also make toys such as electric detonation bamboo in addition.

4, the used power supply of the utility model can be dry cell, storage battery or single-phase, three-phase alternating current through over commutation and direct current etc.

Below by accompanying drawing specific embodiments of the present utility model is further elaborated:

Fig. 1, multipole homopolarity formula linear DC motor front elevational schematic;

Fig. 2, multipole homopolarity formula linear DC motor schematic top plan view;

Fig. 3, be the A-O-B cross-sectional schematic of Fig. 2;

Fig. 4, be the C-C cross-sectional schematic of Fig. 1;

Fig. 5, this linear DC motor are used for the axle survey schematic diagram that machinery does reciprocating linear motion;

Fig. 6, be the electric circuit diagram of Fig. 5;

Fig. 7, this linear DC motor are used to imitate the let off firecrackers axle of toy and survey schematic diagram;

Fig. 8, be the electric circuit diagram of Fig. 7

With reference to Fig. 1,2,3 and 4, the magnetic pole of multipole homopolarity formula linear DC motor is that magnetic core 1 and magnetic boots 2 constitute, and the homopolarity magnetic pole of this motor has more than two, and they are fixed on the inner iron core 3 equably, and all magnetic boots 2 are same polarity, and this polarity is the opposite sex with outer unshakable in one's determination 4 polarity.Leave air gap between outer iron core 4 and the magnetic boots 2, the firm whole shape secondary coil 5 that is turned to by the high strength insulated conductor is housed in the bottom of air gap, this secondary coil also can be on the skeleton made from insulating material 6, all leaves the gap between secondary coil 5 and the magnetic boots 2 and outer unshakable in one's determination 4.Secondary coil 5 tops are provided with support 7, and they can together move between air gap along guide rail 8.On the thinner post in inner iron core 3 bottoms and outer unshakable in one's determination 4 yoke portion 9 ends, the iron bottom cap 10 that makes formation loop, magnetic field is housed, iron bottom cap is provided with the fairlead of DC power supply lead.Constituted the basic technical features of this multipole homopolarity formula linear DC motor from the above mentioned.Magnetic pole can be to constitute around magnet exciting coil 11 on magnetic core 1, also can constitute the homopolarity magnetic pole by permanent magnet.

With reference to Fig. 5, the secondary coil of multipole homopolarity formula linear DC motor and the power supply of magnet exciting coil are respectively from lead-out wire 12 and terminal block 13 inputs.One end of secondary coil is equipped with slide bar 14 and transmission device 15, and the kinetic energy of this linear motor passes through them to outside mechanical part transmission.Collision block 16 is contained in the lateral surface of secondary coil by the slotted hole 18 of shell 17, at the two ends of slotted hole 18 travel switch 19 is housed, to limit the distance of this linear motor back and forth movement.

With reference to Fig. 6, this figure is that multipole homopolarity formula linear DC motor is used for the reciprocating electric circuit diagram of machinery.After the circuit energized, magnet exciting coil just has electric current, and this moment is as pressing button SB _Just, contactor KM then ₂Connect, regulator potentiometer RP makes controllable silicon V conducting again, and secondary coil has electric current to pass through, and motor M is just along a certain direction motion.Otherwise if press button SB _Instead, then just motion in the opposite direction of this motor.When collision block 16 is met travel switch SQ ₁, contactor KM ₂Disconnect, and connect contactor KM ₁Thereby, make motor change the direction of motion; In like manner, meet travel switch SQ when collision block 16 ₂The time, change the direction of motion of this motor once more, so just obtain the reciprocating motion of this motor.Regulator potentiometer RP can change the size of motor secondary coil current, reaches the purpose of stepless speed regulation.Press knob down SB _{Left alone without help}, the just stop work of this motor.

With reference to Fig. 7, this figure is that multipole homopolarity formula linear DC motor is used for toy, as the toy of classes such as electric detonation bamboo.The protective cover 19 of this toy, its bottom is a base 20, and whole devices of the electric detonation bamboo that is made of this linear motor are housed in protective cover 19.Electric detonation bamboo 22 with red green Driving beam telltale 21 promptly is arranged on the support on the secondary coil, and during secondary coil energising moving linearly, electric detonation bamboo 22 just together moves upward.Protective cover 19 tops are for what seal, and the signal lamp 23 that can glimmer is equipped with in its upper end, when electric detonation bamboo 22 rises to protective cover 19 tops, just can fall automatically, can launch electric detonation bamboo 22 repeatedly thus.The power supply of electric detonation bamboo 22 inserts from terminal block 24.

With reference to Fig. 8, this figure is the electric circuit diagram that multipole homopolarity formula linear DC motor is used for toy electric detonation bamboo 22 grades.By this figure, after the circuit energized, press knob down SB and maintain time-delay relay KT energising, the signal lamp HL on the protective cover 19 ₁Flicker, and connect the simulated sound integrated circuit (IC) ₁, loud speaker HA ₁Send musical sound.After the time-delay in several seconds, the normally-closed contact of KT disconnects, signal lamp HL ₁With the simulated sound integrated circuit (IC) ₁Outage; Simultaneously, KT normally opened contact closure has just been connected the magnet exciting coil of this motor M and the power supply of secondary coil, and secondary coil just drives electric detonation bamboo 22 and rises, and be about to electric detonation bamboo 22 and launch, and Driving beam telltale HL ₂Bright, the simulated sound integrated circuit (IC) ₂Connect loud speaker HA ₂Just send the sound that similarity rings firecracker.After the once emission of finishing the electric detonation bamboo, can decontrol button SB, prepare emission next time.Can be used as toy constantly emission again and again like this.In addition, utilize the basic structural feature of this multipole homopolarity formula straight line direct current drive, also can be used for to play obvious effects equally in the emission to class weapons such as noiseless cannons.

Claims

1, multipole homopolarity formula linear DC motor, it is characterized in that this motor magnetic pole is made of magnetic core (1) and magnetic boots (2), magnetic pole is more than two, they are fixed on the inner iron core (3) equably, and all magnetic boots (2) are same polarity, and this polarity is the opposite sex with the polarity of outer (4) unshakable in one's determination; It is outside that outer (4) unshakable in one's determination are sleeved on magnetic boots (2), leaves air gap between outer (4) unshakable in one's determination and the magnetic boots (2); The firm whole shape secondary coil (5) that is turned to by the high strength insulated conductor is housed in the bottom of air gap, all leave the gap between this secondary coil (5) and magnetic boots (2) and outer (4) unshakable in one's determination, secondary coil (5) top is provided with support (7), and they can together move between air gap along guide rail (8); On the thinner post in inner iron core (3) lower end and outside yoke portion (9) end of unshakable in one's determination (4), the iron bottom cap (10) that makes magnetic field form the loop is housed; Iron bottom cap is provided with the fairlead of DC power supply lead, has more than constituted this multipole homopolarity formula linear DC motor.

2, according to the described motor of claim 1, the magnetic core (1) that it is characterized in that magnetic pole is for being wound with the magnetic pole of magnet exciting coil (11).

3,, it is characterized in that magnetic pole is the magnetic pole of the permanent magnet of same polarity according to the described motor of claim 1.