JP3185096B2 - Electromagnetic lock device in multi-story parking lot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic lock device having a main body having a fixed iron core and a movable iron core, and a bracket which is detachably mounted on a member to be mounted. The present invention relates to an electromagnetic lock device that is operated by the excitation of the electromagnetic lock.

[0002]

2. Description of the Related Art Generally, an electromagnet includes a fixed core and a movable core. When a coil wound on a bobbin is energized, a magnetic field is generated between the fixed core and the movable core, and the movable core is attracted to the fixed core. Actuated as follows. The movable iron core to be operated is applied to various applications by rotating or linearly sliding. For example, if a valve is connected to the tip of a movable iron core that slides linearly, an electromagnetic valve is configured. Also, if the linear forward and backward movement of the movable iron core is used as it is, a pallet in a multi-story parking lot is used. It is applied to the lock device for the fall prevention and the door lock device.

Conventionally, a lock device 40 for preventing a pallet from dropping in a multi-story parking lot is provided with an automobile mounted below when a pallet suspended and supported by a chain or the like falls due to, for example, a broken chain. Not to damage the
It is provided to support the dropped pallet, and as shown in FIG. 7, a magnetic coil 44 wound around a hollow bobbin 42, a movable core 46, a spring 48,
A disk-shaped stopper 50 for supporting the spring 48; and an iron ring 52 for filling the space between the stopper 50 and the bobbin 42.
And an iron case 54 for housing the magnetic coil 44, a solenoid is formed, and a pallet is supported by a part of a movable iron core 46 protruding from a bearing portion 56 of the case 54. A reed switch 58 that is turned on in response to magnetism when the movable iron core 46 is attracted to a predetermined position is attached to the stopper 50.

The lock device 40 is mounted on a column such as a multistory parking garage, and the movable iron core 46 protrudes to dispose the lower surface of the pallet on which the automobile is mounted so that the lower surface of the pallet can be supported. I was

[0005]

However, in the conventional locking device, the magnetic coil 44 is not normally energized, but is energized when the movable iron core 46 is moved into the case 54. In particular, when used in a cold region, the movable core freezes, and even when the magnetic coil is excited, the movable core is not attracted or when the magnetic coil is de-energized, the movable core is kept in a predetermined position. The risk of not protruding. If the movable iron core 46 is frozen and does not move, the multistory parking lot device cannot be moved.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide an electromagnetic lock device capable of reliably operating a movable iron core by preventing freezing of the movable iron core.

[0007]

In order to solve the problems] standing involved in this invention
An electromagnetic lock device in a body parking lot is configured as follows in order to solve the above problem. That is, a coil body formed in a hollow shape and the coil body are arranged.
The fixed iron core to be set up and away from the fixed iron core
A main body having a movable iron core,
It is fixed to the main body and can be attached to the support of the multi-story parking lot
Parking garage comprising:
An electromagnetic locking device, the fixed iron core in,
The tapered male portion formed toward the movable core side
The movable iron core can be engaged with the male part of the fixed iron core
With a tapered female part,
The coil is moved to the fixed
Can be advanced to the outside of the bracket part by releasing magnetism
And the bracket guides the movable iron core
DC current is formed to support the coil body.
To move the movable core toward the fixed core
A first coil to be excited and an AC current flowing through the movable core
Provides a heating effect without moving to the fixed core side.
And a second coil that is excited to
It is a sign.

[0008] Further , an electromagnetic type b in this multi-story parking lot.
The lock device includes a main body having a coil body formed in a hollow shape, a fixed core disposed in the coil body, and a movable core slid so as to approach and separate from the fixed core. When, standing configured and a bracket portion that is attachable formed in secured to parking garages struts to the main body portion
An electromagnetic lock device in a body parking lot , wherein the fixed iron core has a tapered male portion formed toward the movable iron core, and the movable iron core engages with the male portion of the fixed iron core. It has a female portion with a possible tapered shape and is moved to the fixed core side by excitation of the coil body, and is arranged so as to be able to advance outward of the bracket portion by de-excitation of the coil body, It is formed such bracket guides supporting the movable iron core, the coil body, exchange
Current flows to move the movable core toward the fixed core.
The second coil, which provides a heating action without any
It is characterized by being arranged so as to be juxtaposed with the coil .

[0009] Furthermore, the electromagnetic type in this multi-story parking lot
A lock device includes a main body having a coil body formed in a hollow shape, a fixed core disposed in the coil body, and a movable core operated to approach and separate from the fixed core. And a bracket portion fixed to the main body portion so as to be attachable to a support of the multi- story parking lot.
An electromagnetic lock device in a multistory parking garage , wherein the fixed iron core has a tapered male portion formed toward the movable iron core, and the movable iron core engages with the male portion of the fixed iron core. It has a possible tapered female part and can be moved to the fixed iron core side by excitation of the first coil of the coil body, and can advance outward of the bracket part by de-excitation of the first coil. Placed in the bracket
A second coil is formed to guide and support the movable core, and a second coil is provided in the movable core to provide an exothermic action without an alternating current flowing and moving the movable core to the fixed core side. It may be characterized by that.

[0010] In addition, the electromagnetic type
The lock device includes a main body having a coil body formed in a hollow shape, a fixed core disposed in the coil body, and a movable core operated to approach and separate from the fixed core. , standing configured and a bracket portion that is attachable to form the posts of the secured to parking garages to the main body portion
An electromagnetic lock device in a body parking lot , wherein the fixed iron core has a tapered male portion formed toward the movable iron core, and the movable iron core engages with the male portion of the fixed iron core. A first portion of the coil body having a possible tapered female portion;
While being moved to the fixed core side by the excitation of the coil, the excitation release of the first coil is advanced capable disposed outwardly of the bracket portion, said bracket
A second coil that is formed so as to guide and support the movable core, and that provides a heating action to the bracket portion without an alternating current flowing through the movable core toward the fixed core. The movable core may be provided so as to be slidably guided.

Preferably, a temperature sensor for preventing burning of the second coil is provided in the second coil.

[0012]

[0013]

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an electromagnetic lock device (hereinafter referred to as a lock device) M1 showing a first embodiment, and a substantially cylindrical main body case 2 having a projection 2a formed on an upper portion thereof.
A flange-type mounting bracket 4 that is mounted on the main body case 2 with bolts via packing is configured as a housing.

In FIG. 1, a fixed core 6 having a flange 6a and a tapered male portion 6b formed to have a small diameter toward the left is fixedly provided at the right end in the main body case 2, and the fixed core 6 is fixed. A magnetic coil body 8 is provided so as to surround the magnetic coil body 6.
The magnetic coil body 8 includes a hollow bobbin 9, a first coil 10 and a second coil 11 wound around the bobbin 9, and a movable iron core 18 approaches and separates from the fixed iron core 6 inside the bobbin 9. So as to be slidable. Then, a normal DC current for attracting the movable core 18 to the fixed core 6 flows through the first coil 10, and the second coil 11 only causes the movable core 18 to generate heat without moving the movable core 18. A predetermined alternating current flows. In general, when an alternating current is passed through a DC solenoid, the movable iron core generates self-heating due to iron loss due to an alternating magnetic field, and freezing and thawing can be easily performed. This will help prevent the movable iron core 18 from freezing.

The fixed iron core 6 is fixed to the right end of the main body case 2 by bolts, and has a spring receiving hole 7a and a spring guide hole 7b formed in the axial direction from the left end face side of the male portion 6b.
At the left end of the main body case 2, three mounting seats 2b (see FIG. 2) are formed, and the mounting bracket 4 is fixed with bolts. Further, a drain hole 2c is formed on the lower surface of the main body case 2.

The mounting bracket 4 is formed in a flange shape, and a predetermined number of screw holes 13 for mounting the locking device 1 to a member to be mounted and a screw hole 15 for mounting the main body case 2 are formed in the flange portion 4a. The bearing 16 is press-fitted into the center hole 4b of the mounting bracket 4. The movable iron core 18 is fitted to the bearing 16 so as to be slidable in the left-right direction.

The movable core 18 has a sliding portion 19 slidable on the bearing 16 of the mounting bracket 4, and a larger diameter than the sliding portion 19, and an elastic cushioning member 2 at the right end of the mounting bracket 4.
2 and magnetic coil 8
Are formed from the magnetic pole portions 21 constituting the lines of magnetic force by the excitation.

The tip (left end in FIG. 1) surface of the sliding portion 19 is
When the movable iron core 18 is attracted and moved to the right by the excitation of the first coil 10 of the magnetic coil body 8, the movable iron core 18 slightly enters the mounting bracket 4 from the tip (left end in FIG. 1) of the mounting bracket 4, The movable iron core 18 is the first
When the excitation of the file 10 is released and the file 10 is moved to the left, it is configured to protrude outward more than the tip end surface of the mounting bracket 4.

The stopper portion 20 has an inclined surface 20a on the magnetic pole portion 21 side so as to decrease in diameter toward the magnetic pole portion 21 side. When the movable iron core 18 is moved rightward, the movable core 18 is disposed in the projection 2 a of the main body case 2.
The rollers 24a and 25a (detection units) of the micro switches 24 (for position detection) and 25 (for heat generation)
a contacts the microswitches 24 and 25. These rollers 24a and 25a
・ It is arranged at 25 via a lever.

A tapered female portion 21a is formed inside the magnetic pole portion 21 so as to be engageable with the tapered male portion 6b of the fixed iron core 6, and a spring receiving hole 21b and a spring receiving portion are formed at the back of the female portion 21a. A spring guide hole 21c having a smaller diameter than the hole 21b is formed. When the movable iron core 18 is moved rightward by the excitation of the first coil 10, the tapered female portion 21 a of the movable iron core 18 is engaged and supported by the tapered male portion 6 b of the fixed iron core 6.

When the circular spring guide 26 is press-fitted into the spring guide hole 7 b of the fixed core 6 and the movable core 18 is moved rightward, the spring guide hole 21 c of the movable core 18 is moved.
It is configured to be engaged with. And spring guide 2
The coil spring 28 disposed on the outer periphery of the movable core 6
Is not attracted to the first coil 10, that is, in a state where the left end of the stopper portion 20 of the movable iron core 18 is in contact with the right end surface of the mounting bracket 4 via the buffer member 22, Receiving hole 7a and movable core 1
Eight spring receiving holes 21b are attached so that both end surfaces thereof are pressed. Therefore, when the movable core 18 is attracted by the first coil 10 and moved to the right, the coil spring 28 exerts a force to urge the movable core 18 to the left.

The movable iron core 18 has a stopper 20.
A cushioning member 23 supported by the magnetic pole portion 21 is disposed on the right end surface of the magnetic coil body 8, and abuts against a yoke 29 disposed on the left side surface of the magnetic coil body 8 when the movable core 18 is moved rightward. .

The lead wires of the first coil 10, the second coil 11, and the microswitches 24 and 25 are routed through the cabtire cable 30 from the protrusion 2 a of the main body case 2 to the outside.

The lock device M1 configured as described above
Is used, for example, as shown in FIG. 3 to prevent a pallet from falling in a multistory parking lot (hereinafter referred to as a parking lot) P. In this multi-story parking garage, an automobile mounted on the pallet PL is moved up and down by a chain suspended on the pallet PL in the elevating device, and stored in a predetermined place.
The bracket 4 of the lock device M1 is engaged with the two posts S at the same height among the four posts S in the lifting device through which the pallet PL passes, and by screwing a bolt into the screw hole 13. The lock device M1 is fixed to the column S. An alternating current is connected to each lock device M1.

When the pallet on which the automobile is mounted does not move in the vertical direction, the movable core 18 is always operated so as to protrude from the column S toward the inside of the lifting device. Even if a chain break occurs, the pallet can be supported by the two lock devices M1, and the lower vehicle is not damaged.

In this state, the current is supplied to the first coil 1
0, and a predetermined appropriate amount of alternating current is flowing through the second coil 11. Therefore, the movable iron core 18 is
The stopper 20 of the movable iron core 18 is moved via the cushioning member 22 so as to contact the right end face of the bracket 4 by the biasing force of the movable iron core 18, and the sliding portion 19 is moved from the bracket 4 into the support S (leftward in FIG. 3). (A two-dot chain line in FIG. 3).

At this time, the alternating current flowing through the second coil 11 causes the second coil 11 to generate heat, and conducts the heat from the second coil 11 to the movable core 18 via the bobbin 9. The heat conducted to the movable core 18 is transmitted from the magnetic pole portion 21 of the movable core 18 to the sliding portion 19 and is constantly maintained at a temperature higher than the outside air temperature. Therefore, even when the surface of the movable core 18 (particularly, the sliding portion 19) freezes due to severe winter cold or use in a cold region, the movable core 18
The surface has no heat and does not freeze. Therefore, the movable iron core 18 is immediately attracted to the fixed iron core 6 when a DC current flows through the first coil 10.

Next, when the pallet PL is to be moved up and down for taking in and out of the automobile, the first coil 1
A DC current is applied to 0 to excite the first coil 10. Then, a magnetic field is generated in the fixed core 6, the movable core 18 and the yoke 29, and the movable core 18 is attracted and moved toward the fixed core 6 against the urging force of the coil spring 28. When the movable core 18 moves, the tapered female portion 21a formed on the magnetic pole portion 21 of the movable core 18 is engaged with the tapered male portion 6b of the fixed core 6, and the movable core 18
0 is moved to a position where the right end surface of the cylinder abuts on the cushioning member 23, and the inclined surface 2 formed on the stopper portion 20 during this movement.
0a is the roller portion 24a of the microswitches 24 and 25.
The left end surface of the movable core 18 is the same as or slightly enters the bracket 4 as shown in FIG.
Solid line part).

Experiments have shown that the shape of the tapered female portion 21a of the movable iron core 18 of the present embodiment is advantageously formed to improve the magnetic force and increase the attraction force. That is, the length of the magnetic pole part 21 of the movable core 18 is
0, and the thickness of the magnetic pole portion 21 increases in the direction in which it is attracted to the fixed iron core 6. Will be improved.

When the micro switch 24 is turned on, the pallet PL is moved up and down to replace the vehicle. At this time, since the movable iron core 18 of the lock device M1 does not hinder the vertical movement of the pallet PL, the vertical movement of the pallet PL is operated without any problem. When the micro switch 25 is turned on, the current flowing through the second coil 11 is stopped, and the heat generation of the second coil 11 is stopped. Since the replacement time of the automobile does not take a long time, the movable iron core 18 is not frozen until the next heating operation of the second coil 11 is performed.

When the vehicle is stored in a predetermined place, the operation button is operated to stop the current flowing through the first coil 10. Therefore, the movable iron core 18 again projects into the support S, and turns off the micro switches 24 and 25. Therefore, a current flows through the second coil 11 to warm the movable iron core 18.

As described above, when the movable core 18 protrudes into the column S of the elevating device, a current always flows and the temperature of the movable core 18 itself can be increased.

The above-described energization of the second coil 11 is intended to always flow when the movable iron core 18 protrudes. However, when the current is efficiently supplied, the movable iron core 18 (especially The current may be supplied when the sliding portion 19) freezes. In this case, that is, when the movable core 18 protrudes into the column S, the first coil 10 and the second coil 11 are not energized, and the movable core 18 is stopped by the urging force of the coil spring 28. Is moved so as to come into contact with the right end face of the bracket 4 via the buffer member 22 so that the sliding portion 19 projects from the bracket 4 into the support S. When the movable iron core 18 freezes in this state, AC is supplied to the first coil 10 and DC is supplied to the second coil 11 simultaneously. The alternating current flowing through the second coil 11 causes the second coil 11 to generate heat, and conducts the heat from the second coil 11 to the movable core 18 via the bobbin 9. The heat conducted to the movable core 18 is transferred to the magnetic pole portion 21 of the movable core 18.
To the sliding portion 19 to defrost the freezing of the surface of the sliding portion 19. As a result, the movable core 18 is attracted to the fixed core 6 by the first coil 10 that is excited. When the movable core 18 is moved toward the fixed core 6 and presses the roller portions 24a and 25a of the micro switches 24 and 25, the micro switches 24 and 25 are turned on, and the energization of the first coil 10 and the second coil 11 is released. Movable iron core 1
The supply of heat to 8 is stopped.

Although the second coil in the above embodiment is arranged in the coil body 8, the present invention is not limited to this, and the effects of the present invention can be achieved in other embodiments shown in FIGS. Can be.

The lock device M2 in FIG. 4 shows a second embodiment, and the second coil 11 in FIG.
The movable iron core 18 is disposed on the outer peripheral surface of the stopper portion 20 in a state where the movable iron core 18 protrudes into the column S and is separated from the coil 10. One magnetic coil body 33 is arranged, and the fixed iron core 6 is fixedly arranged on the right end face of the first magnetic coil body 33. The first magnetic coil body 33 includes a bobbin 34 and a bobbin 34.
And a first coil 35 wound around the
A current flows through the coil 35 so that the movable core 18 is attracted and moved toward the fixed core 6 to excite the first coil 35.

A hollow second magnetic coil body 36 is arranged on the inner surface of the bracket 4 so as to fit the stopper 20 of the movable iron core 18. Second magnetic coil body 3
6 is a bobbin 37 and a second coil 3 wound around the bobbin 37
8 so as to provide the movable core 18 with heat.
A current flows through the coil 38. When the movable core 18 is attracted and moved toward the fixed core 6 by the excitation of the first coil 35, the roller portion 25a of the micro switch 25 is pressed by the inclined surface 20a of the stopper portion 20 to turn on the micro switch.
When the microswitch 25 is turned on, the current flowing through the second coil 38 is stopped, so that heat generation to the movable iron core 18 is stopped. When the excitation of the first coil 35 is released, the movable core 18 is moved leftward so as to protrude into the column S, and the stopper portion 20 is inserted into the second magnetic coil body 36. At this time, the microswitch 25 is turned off and a current flows through the second coil 38, so that the movable iron core 18 can be warmed . Therefore, the current actually flows through the second coil 38 because the stopper portion 20 of the movable core 18 is
Since the stopper 20 is inserted into the second magnetic coil body 36, there is substantially no effect even when the stopper 20 is separated from the second magnetic coil body 36 because of the attraction.

In this embodiment, since the second coil 38 allows current to flow in the immediate vicinity of the stopper 20 of the movable core 18, the efficiency of freezing prevention is high.

In this embodiment, too, the movable iron core 1 is provided in order to more efficiently supply a current to the second coil 38.
The current may not always flow when the protrusion 8 protrudes, but an alternating current may flow to the second coil 38 simultaneously with the first coil 35 when the movable core 18 freezes. The operation mode is the same as that of the above-described embodiment.

FIG. 5 shows a lock device M3 according to a third embodiment, in which a temperature detection sensor 39 is mounted on the second magnetic coil body 36 in the lock device M2 according to the second embodiment. As the temperature detection sensor 39, a thermal protector, a thermistor, a posistor, or the like is used.
N ・ OFF. Therefore, when the temperature of the movable core 18 is equal to or lower than the predetermined temperature, an alternating current flows through the second coil 38 to warm the movable core, and when the temperature of the movable core 18 rises and reaches the predetermined temperature, the second coil 38 is prevented from burning out. Then, the current flowing through the second coil 38 is stopped.

The lock device M 3 of this embodiment is useful for improving the efficiency of preventing freezing and for preventing the second coil 38 from burning.

FIG. 6 shows a locking device M4 according to a fourth embodiment, which is a modification of the locking device M2 according to the second embodiment, in which a groove 20b is formed in a stopper portion 20 of a movable core 18. And the second coil 38 is wound directly around the groove 20b. Therefore, since the second coil 38 that allows current to flow through the movable core 18 always moves together with the movable core 18, the efficiency of preventing the movable core 18 from freezing is further improved.

The operation of the lock devices M2 to M4 in the parking lot P is the same as that of the lock device M1 of the first embodiment, the operation of the movable iron core in the lock devices M3 to M4, and the operation of the first coil. 35. The excitation state of the second coil 38 is the same as that of the second mode lock device M2, and thus the description is omitted.

It should be noted that a ceramic heater or a nichrome wire may be provided in the second coil 38 in the form of M2 to M4 so that the movable iron core generates heat.

[0046]

According to the present invention, the electromagnetic lock device is
The apparatus includes a main body having a fixed core and a movable iron core, and a bracket fixed to the main body and formed to be attachable to a member to be mounted. The movable core is slid by a first coil that generates magnetism when a DC current flows, and a second coil that supplies an AC current and generates heat to the movable core is disposed in the main body. Has been established. Therefore, the movable core can be thawed without freezing, or even when the movable core freezes, due to the heat generated by the movable core. Can be.

Further, the electromagnetic lock device includes a coil body formed in a hollow shape, a fixed iron core provided in the coil body, and a movable member slid so as to approach and separate from the fixed iron core. And a bracket portion fixed to the main body portion and formed to be attachable to the member to be attached, wherein the fixed core is formed toward the movable core side. The movable iron core has a tapered female portion engageable with the male portion of the fixed iron core, and is moved toward the fixed iron core by exciting the coil body. The bracket is formed so as to be able to advance toward the outside of the bracket by releasing the excitation of the coil, and the bracket is formed so as to guide and support the movable iron core. Movable iron A first coil that excites to move to the fixed core side, and a second coil that excites to provide an exothermic action without moving the movable core to the fixed core side while the alternating current flows. Because it is characterized by being juxtaposed, it can be thawed without freezing the movable iron core, or even if the movable iron core freezes, due to the heat generated by the movable iron core, and is used in cold winter months and cold regions. Can greatly help prevent freezing.

Further, if the second coil is arranged on the movable iron core side, the movable iron core can be more efficiently heated.

Further, if a temperature sensor for preventing burning of the second coil is provided in the second coil, it is effective to prevent burning of the second coil.

Further, if currents are separately supplied to the first coil and the second coil, an alternating current always flows when the movable core projects, so that the movable core is not frozen. .

Further, if current is supplied to the first coil and the second coil at the same time, even if the movable core is frozen while the movable core is protruding, the movable core is heated and thawed only at that time. Since the movable core can be attracted to the fixed core, the efficiency is extremely high.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a lock device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a simplified diagram showing a state in which the lock device in FIG. 1 is used in a multistory parking lot.

FIG. 4 is a front sectional view showing a second embodiment of the locking device.

FIG. 5 is a front sectional view showing a third embodiment of the locking device.

FIG. 6 is a front sectional view showing a fourth embodiment of the locking device.

FIG. 7 is a sectional view showing a conventional locking device.

[Description of Signs] M1, M2, M3, M4: Locking device 2: Body case (main body) 4: Bracket 6: Fixed iron core 6b: Tapered male portion 8: Magnetic coil body 10: First coil 11: First 2 coil 18: movable iron core 21a: tapered female portion 24, 25: micro switch (sensing sensor) 33: first magnetic coil 35: first coil 36: second magnetic coil 38: second coil

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-130540 (JP, A) JP-A-6-251934 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01F 7/16 H01F 7/18

Claims (5)

(57) [Claims] A coil body formed in a hollow shape;
The fixed iron core disposed on the
A movable iron core that is slid so as to approach and separate
Attached to the body and the support of the multi-story parking lot fixed to the main body
And a bracket portion formed so as to be capable of being formed.
An electromagnetic lock device in a multistory parking garage, wherein the fixed iron core is formed toward the movable iron core.
A movable core having a tapered male portion;
The coil having a tapered female portion engageable with the male portion of the coil
While being moved to the fixed core side by the excitation of the body,
When the excitation of the coil body is released,
So that the bracket portion guides and supports the movable iron core.
A DC current flows through the coil body to move the movable core
A first coil that is excited to move to the fixed core side;
Current flows to move the movable core toward the fixed core.
A second coil that excites to provide a heating action without
In a multi-story parking lot, where
Electromagnetic locking device . 2. A main body having a coil body formed in a hollow shape, a fixed core disposed in the coil body, and a movable core slid so as to approach and separate from the fixed core. And a bracket part fixed to the main body part and formed so as to be attachable to a support of the multi- story parking lot.
An electromagnetic lock device in a multi-story parking garage , wherein the fixed iron core has a tapered male portion formed toward the movable iron core, and the movable iron core engages with a male portion of the fixed iron core. While having a possible tapered female portion and being moved to the fixed core side by excitation of the coil body,
When the excitation of the coil body is released, the coil body is disposed so as to be able to advance toward the outside of the bracket portion, and an alternating current flows through the coil body to move the movable iron core.
The second that provides a heating effect without moving to the fixed core side
The coil is arranged so as to be juxtaposed with the first coil.
The electromagnetic in a multi-story parking lot according to claim 1, characterized in that:
Locking device . 3. A main body having a hollow coil body, a fixed core disposed in the coil body, and a movable core operated to approach and separate from the fixed core. And a bracket portion fixed to the main body portion so as to be attachable to a support of the multistory parking garage.
An electromagnetic lock device in a multi-story parking garage , wherein the fixed iron core has a tapered male portion formed toward the movable iron core, and the movable iron core engages with a male portion of the fixed iron core. It has a possible tapered female part and can be moved to the fixed iron core side by excitation of the first coil of the coil body, and can advance outward of the bracket part by de-excitation of the first coil. A second portion is provided so that the bracket portion guides and supports the movable iron core, and an alternating current flows through the movable iron core to provide a heating action without moving the movable iron core toward the fixed iron core.
The three-dimensional structure according to claim 1, wherein a coil is provided.
An electromagnetic locking device in a parking lot. 4. A main body having a coil body formed in a hollow shape, a fixed core disposed in the coil body, and a movable core operated to approach and separate from the fixed core. And a bracket portion fixed to the main body portion so as to be attachable to a support of the multistory parking garage.
An electromagnetic lock device in a multi-story parking garage , wherein the fixed iron core has a tapered male portion formed toward the movable iron core, and the movable iron core engages with a male portion of the fixed iron core. It has a possible tapered female part and can be moved to the fixed iron core side by excitation of the first coil of the coil body, and can advance outward of the bracket part by de-excitation of the first coil. The bracket portion is formed so as to guide and support the movable core, and an alternating current flows through the bracket portion to provide a heating action without moving the movable core to the fixed core side. The electromagnetic lock device according to claim 1, wherein the second coil is disposed so that the movable core is slidably guided . To wherein said second coil, definitive to claim 1, 2, 3 or 4, wherein the parking garage temperature sensor for burning prevention of the second coil, characterized in that it is provided an electromagnetic
Locking device .