KR100231067B1 - Electronic switch using push-pull solenoid - Google Patents

Abstract

The present invention relates to a push-pull solenoid (PUSH-PULL SOLENOID), in particular the movement of the movable portion by the excitation electromagnetic coil due to the structure provided integrally with the pair of permanent magnets of the same polarity on both sides of the movable portion The present invention relates to an electronic switch using a high-speed push-pull solenoid capable of generating a large moving force from a small size to a low power consumption by moving a movable part by a push-pull method in which a suction force by one magnet and a repulsive force by the other magnet are added to the force.

The present invention includes a first solenoid in which the magnetic poles formed at both ends of the bobbin are inverted according to the direction of application of the current, and a locking member slidably inserted into the first solenoid to set the locking device to a locked or unlocked state. The first and second permanent magnets are disposed to face each other with the same polarity to both end portions extending out of the first solenoid of the locking member, and the movable part is interlocked only when the first solenoid operates. And an auxiliary locking means for releasing the state coupled to the formed first or second stop groove.

Description

Electronic switchgear for electronic door lockout device using push pull solenoid

The present invention relates to a push-pull solenoid (PUSH-PULL SOLENOID), in particular the movement of the movable portion by the excitation electromagnetic coil due to the structure provided integrally facing the pair of permanent magnets of the same polarity on both sides of the movable portion Electronic switchgear for electronic door lockout device using a high-speed push-pull solenoid that can generate large movement force from small size to total power consumption by moving the moving part by push-pull method that adds suction force by one magnet and repulsion force by other magnet It is about.

In general, in the cylindrical coil or solenoid, when a current flows through the electromagnetic coil, a suction force is generated into the solenoid.

Electromagnetic components using this principle have been developed with many solenoid actuators, relays and solenoid valves.

Figure 1 shows a typical example of such a solenoid. In Fig. 1, reference numeral 1 denotes a movable part (or plunger) made of a magnet, 3 denotes a return spring, 5 denotes an iron bobbin, and 7 denotes an electromagnetic coil.

In the conventional solenoid having the above configuration, the suction force F is generated from the left to the right of the electromagnetic coil 7 when a current is supplied and flows through the electromagnetic coil 7. As a result, the movable part 1 is displaced to the right while compressing the return spring 3. After that, when the current to the electromagnetic coil 3 is cut off, the movable part 1 is returned to the original position on the left side by the restoring force of the return spring 3.

These solenoids are applied to many fields such as relays and solenoid valves, and their application fields include various home appliances and switch devices of industrial devices, valve switch devices, and switches.

However, the conventional solenoid structure has a limit in which an operating speed and an operating efficiency of the plunger are determined according to the driving current and the material of the bobbin applied to the solenoid.

Therefore, miniaturization and thinning have been attempted in accordance with the development of various high-tech electronic devices, but there is no great development in the basic principle of driving the plunger, and for the development of a more compact electronic switch or solenoid valve, The development of new solenoids with high efficiency and high speed is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art, and an object thereof is to properly couple an auxiliary solenoid to a high-speed push-pull solenoid that can generate a large moving force from a small size to a low power consumption by moving the movable part in a push-pull manner. In order to extend the life of the battery and at the same time to provide an electronic switch for a small electronic door lock device that can block the forced opening and closing from the outside.

1 is a schematic block diagram showing a conventional solenoid structure.

2a and b is a state diagram showing the operating principle of the push-pull solenoid according to the present invention.

3 is a schematic configuration diagram showing an example in which the push-pull solenoid of the present invention is applied to a movable part for an electric switch.

* Explanation of symbols for main parts of the drawings

11: bobbin 13: electronic coil

15: movable part 17, 19: permanent magnet

20: solenoid 25: main solenoid

27: auxiliary solenoid 31, 33: groove

35: second electronic coil 37: second bobbin

39: second movable part 41: polarity inversion circuit

43: battery

In order to achieve the above object, the push-pull solenoid of the present invention is a solenoid that the magnetic coil is wound around the magnetic bobbin and the magnetic poles formed on both ends of the bobbin in accordance with the direction of the application of the current is inverted, and the sliding inside the solenoid A magnetic pole formed at both ends of the solenoid, the movable part being inserted into the movable part and the first and second permanent magnets positioned at both end portions extending out of the solenoid of the movable part and facing each other with the same polarity. A suction force and a repulsion force in the same direction are formed between the first and second permanent magnets and move the movable part in a push-pull manner.

Accordingly, the electronic switch using the push-pull solenoid according to the present invention is a first solenoid in which the magnetic poles formed at both ends of the bobbin are reversed according to the direction of application of the current, and the sliding device is slidably inserted into the first solenoid. A locking member for locking or unlocking, first and second permanent magnets faced to the same polarity at both ends extending out of the first solenoid of the locking member, and the first solenoid is operated; Only in conjunction with the movable portion is characterized in that it comprises a secondary locking means for releasing the state coupled to the first or second stop groove formed in the locking member.

The distance between the first and second stop grooves in the electromagnetic switch is set equal to the stroke distance of the locking member.

The auxiliary locking means may include a second solenoid connected in parallel with the first solenoid, and a movable part for releasing the locked state of the locking member by the second solenoid.

Furthermore, it further includes a polarity inversion circuit for inverting the polarity of the current applied to the first solenoid.

As described above, in the present invention, a pair of permanent magnets having the same polarity are integrally provided on both sides of the movable part which slides through the solenoid so as to be integral with the suction force of the one side magnet to the movement force of the movable part by the excitation electromagnetic coil. Repulsive force by the other magnet is added and the movable part is moved in a push-pull manner.

As a result, a high-speed push-pull solenoid that can generate a large moving force from a small size to low power consumption is obtained. The electronic switch using the straight solenoid also generates an appropriate opening and closing force with a small size and low power, and employs a locking member using an auxiliary solenoid. This can prevent forced opening and closing.

EXAMPLE

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2a and 2b is an operational state diagram showing the operating principle of the push-pull solenoid according to the present invention, Figure 3 is a schematic configuration diagram showing an example of applying the push-pull solenoid of the present invention to the movable part for an electronic switch.

First, referring to Figure 2, the push-pull solenoid of the present invention, for example, an electromagnetic coil 13 is wound around a bobbin (or core) 11 made of an iron-based metal to form a solenoid, and the inside of the bobbin 11 The first and second permanent magnets 17 and 19 having the same polarity on both sides are embedded in the movable part 15 which is slidably inserted left / right and face to face.

Hereinafter, the action of the solenoid of the present invention configured as described above will be described in detail.

For example, the surface-facing magnetic poles of the first and second permanent magnets 17 and 19 embedded as shown in FIG. 2A are N poles, and the winding direction of the electromagnetic coil 13 wound on the bobbin 11 is relative to the bobbin. When the current is applied in the right hand direction and the current is applied in the right hand direction, a magnetic flux flows from the left side to the right side of the bobbin 11 to form an N pole on the left side of the bobbin 11, and an S pole on the right side.

Accordingly, the polarity of the left portion of the solenoid 20 facing the first permanent magnet 17 faces the N pole having the same polarity as that of the first permanent magnet 17, so that the repulsive force F1 acts on each other. The polarity S of the right side of the solenoid 20 facing the permanent magnet 19 has a polarity opposite to the polarity N of the second permanent magnet 19 such that a pulling force F2 acts on each other. do.

As a result, a repulsive force F1 is formed on the left side of the solenoid 20 where the position is fixed to push the left end of the movable part 15 to the left side, and the right end of the movable part 15 is the solenoid on the right side of the solenoid 20. A suction force F2 attracted toward (20) is formed, and the leftward moving force applied to the movable portion 15 is the sum of the two forces (F1 + F2). Therefore, the movable part 15 is quickly moved to the left in the push-pull manner.

On the other hand, when a current is applied in the left hand direction as shown in FIG. 2B, a magnetic flux flows from the right side of the bobbin 11 to the left side as opposed to FIG. 2A, and an S pole is formed on the left side of the bobbin 11, and N on the right side. A pole is formed.

Accordingly, the polarity S of the left side of the solenoid 20 facing the first permanent magnet 17 has a polarity opposite to the polarity N of the first permanent magnet 17 such that the pulling force F1 'is mutually different. On the contrary, the polarity N of the right side of the solenoid 20 facing the second permanent magnet 19 has the same polarity as the polarity N of the second permanent magnet 19 so that the repulsive force F2 is mutually equal. ') Will work.

As a result, a repulsion force F2 'is formed on the right side of the solenoid 20 having a fixed position to push the right end portion of the movable portion 15 to the right side, and the left end portion of the movable portion 15 is formed on the left side of the solenoid 20. A suction force F1 'attracted toward the solenoid 20 is formed, and the rightward moving force on the movable part 15 is the sum of the two forces (F1' + F2 '). Thus, the movable part 15 is quickly moved in the right direction in a push-pull manner.

Therefore, the above structure of the present invention can be operated with a relatively small drive current compared to the conventional solenoid in which the movable portion (or plunger) is moved only depending on the drive current applied to the electromagnetic coil 13, on the other hand, In the case of applying the same driving current, the solenoid of the present invention receives a large moving force as compared with the conventional one, thereby enabling high-speed operation.

Moreover, the structure of the present invention can be implemented by forming permanent magnets integrally on both sides of the movable part without greatly changing the basic structure of the solenoid, so that a small and large moving force can be obtained.

The push-pull solenoid as described above may be variously applied to an application using a general solenoid. Hereinafter, an example applied to an electronic switch will be described.

Solenoids for electronic switchgear used in the related art have a large current consumption at a constant voltage in order to generate an appropriate switching force. As a result, in the case of the built-in battery, there was a disadvantage in that it could not be used for a long time due to the power consumption of the battery, and there was a problem in that the switch could be operated by forcibly operating with a strong magnet from the outside.

To solve this problem, the electromagnetic switch of the present invention shown in FIG. 3 winds the solenoid 20 by winding the first electromagnetic coil 13 on the first bobbin (or core) 11 to form the push-pull solenoid. The first movable part 15 slidably inserted left / right inside the bobbin 11 is provided with the first and second permanent magnets 17 and 19 having the same polarity on both sides thereof face to face. have.

The right end of the first movable part 15 serves as a main locking member of the electronic door locking device (not shown).

Meanwhile, the electronic switch of the present invention uses the above-mentioned push-pull solenoid as the main solenoid (MAIN SOL) 25 to move the locking member, and thus, an auxiliary solenoid having a general structure for blocking forced opening and closing operation from the outside. (27) is provided.

To this end, two grooves 31 and 33 are formed on the right side of the first movable part 15 at a distance equal to the stroke distance SL of the first movable part, and the grooves 31 and 33 are formed on the first electrons. The front end of the second movable portion 39 of the auxiliary solenoid 27 formed by winding the second electromagnetic coil 35 connected in parallel with the coil 13 to the second bobbin (or core) 37 is coupled.

Therefore, in the electromagnetic switch of the present invention having the configuration described above, when a current is applied to the electromagnetic coils 13 and 37, the first movable part 15 of the main solenoid 25 receives a moving force in the right direction.

At the same time, the auxiliary solenoid 27 is operated so that the second movable part 39 retreats from the groove 33 and moves toward the auxiliary solenoid 27. As a result, the locked state is released and the first movable part (ie, the locking member) 15 moves in the right direction to set the locking device in the locked state.

After that, when the current supply to the electromagnetic coils 13 and 35 is cut off, the auxiliary solenoid 27 is turned off, and the second movable part 39 is returned to its original position by a return spring (not shown) to the groove 31. To combine.

Then, in order to set the door locking device to the unlocked state, for example, a control signal is applied to the polarity inversion circuit 41 inserted between the inputs of the electromagnetic coils 13 and 35 and the battery 43 to the electronic coil. When the flow direction of the current applied to the reverse direction is reversed, the first movable part 15 of the main solenoid 25 receives a moving force to move to the left, and the auxiliary solenoid 27 is turned on The two movable parts 39 release the locked state of the first movable part 15. As a result, the first movable part (locking member) 15 is moved to the left to release the locked state of the door.

As described above, in the electronic switch according to the present invention, a push-pull main solenoid can generate an appropriate opening and closing power with low power consumption, and thus, a battery built-in switch can be used for a long time, and also by fixing the locking member by the auxiliary solenoid. It is possible to prevent forced opening and closing using strong magnetism from the outside.

As described above, in the present invention, a pair of permanent magnets having the same polarity are integrally provided on both sides of the movable part which slides through the solenoid so as to be integral with each other so that the suction force of the one side magnet is increased by The repulsive force by the other magnet is added and the movable part moves in the push-pull manner. The result is a high-speed push-pull solenoid capable of generating large travel forces from small size to low power consumption.

In addition, the electronic switch using the linear solenoid also generates a proper opening and closing force with a small size, low power, it is possible to prevent the forced opening and closing by the adoption of the locking member using the auxiliary solenoid.

While the invention has been shown and described with reference to certain preferred embodiments, the invention is not limited to the embodiments described above and the general knowledge in the art to which the invention pertains without departing from the spirit of the invention. Various changes and modifications may be made by the possessor.

Claims (4)

A first solenoid in which magnetic poles formed at both ends of the bobbin are reversed according to a direction in which current is applied, a locking member slidably inserted into the first solenoid to set the locking device in a locked or unlocked state, and the locking First and second permanent magnets disposed so as to face to each other with the same polarity at both end portions extending out of the first solenoid of the member, and a first movable part formed in the locking member by interlocking only when the first solenoid is operated. Or an auxiliary locking means for releasing the state coupled to the second stop groove. The electronic switch as claimed in claim 1, wherein the distance between the first and second stop grooves is set equal to the stroke distance of the locking member. The electronic switch as claimed in claim 1, wherein the auxiliary locking means comprises a second solenoid connected in parallel with the first solenoid, and a movable part which releases the locking state of the locking member by the second solenoid. The electronic switch as claimed in claim 1, further comprising a polarity inversion circuit for inverting the polarity of the current applied to the first solenoid according to a control signal applied from the outside.