JP2668424B2 - Electric locking and unlocking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in an immobilized electric locking / unlocking device.

[Prior Art] FIGS. 11 and 12 are explanatory views showing an appearance of an example of a conventional surface-mounted electric lock.

In these figures, 100 is a surfaced housing, 100a is a deadbolt that moves left and right in the surfaced housing 100, 1
00b is a thumb turn that manually operates the deadbolt 100a, 100
c indicates a mounting screw for fixing to a door (not shown).

Inside the faced housing 100 of such a faced lock, a rotary solenoid 101 as shown in FIG. 13 is provided to drive the dead bolt 100a, and the structure is rotated between the stators 101a, 101a. A rotor 101b that performs a rotational motion about the axis 101d is arranged, and when the energizing direction of the coil 101f is reversed, the magnetic poles of the stators 101a, 101a are reversed so that the rotor 101b rotates left and right, and a link provided on the rotating shaft. A dead bolt (not shown) is moved left and right by means of (not shown) or the like to lock and unlock. The rotor 101b has a structure in which magnetic pole pieces 101e, 101e are provided on both sides in the magnetization direction of the permanent magnet 101c, and the gap 101g between the stators 101a, 101a is equal in both upper and lower sides to obtain bistable torque characteristics. It has become.

In a rotary solenoid having such a structure, the rotor 10
1b reciprocates the first and second initial reversal positions located on the left and right with the gap 101g of the stator 101a interposed therebetween, and usually sets the rotation angle when the rotor 101b is in the vertical state. If it is 0 degree, it is a mechanism for driving the dead bolt by rotating 90 degrees from -45 degrees to 45 degrees, and measuring the torque characteristics with respect to the rotation angle for the right rotation of the rotor 101b as shown in FIG. A bistable torque characteristic curve is obtained. The same applies to the case of left rotation.

Here, the rotational torque T of the rotary solenoid is such that the gap between the magnetic pole pieces 101e, 101e of the rotor 101b and the stators 101a, 101a is 101h, 101i as shown in FIG.
Let T1 and T2 denote the torques generated in step (1), respectively.

T = 2 × (T1 + T2) Also, the magnetic resistances of the gaps 101h and 101i are R1 and R2, respectively.
And the magnetic flux passing through each gap is Φ1 and Φ2,
T1 and T2 are further expressed by the following equations.

T1 = ((R1 ・ Φ1) / 2) × d (1 / R1) / dθ T2 = ((R2 ・ Φ2) / 2) × d (2 / R2) / dθ where the magnetic pole of the permanent magnet of the rotor 101b N up the sex
When the stator 101a is the north pole and the right side is the south pole, the magnetic flux by the coil flows like a wavy line when the rotor 101b is at -45 degrees. , The magnetic flux generated by one of the permanent magnets flows as shown by the alternate long and short dash line.

Then, since the magnetic flux at 101i decreases and the magnetic flux at 101h increases, a clockwise rotation torque is generated. When the rotation of the rotor progresses and the gap 101h between the pole piece 101e and the stator 101a narrows, the magnetic resistance decreases, so the torque becomes maximum, and as the rotation further progresses, the gap 101i widens and the increase rate of the passing magnetic flux increases. Is decreasing, the torque is gradually decreasing.

Therefore, as shown by (a) in FIG. 14, the torque characteristic is such that the maximum torque is obtained on the left side of the rotation angle of 0 degree.

Regarding the non-excited torque characteristics, the rotor 101b
When the rotation angle is not regulated, the rotor 101b stands still in a substantially horizontal state. In this state, the magnetic resistance of the magnetic circuit in which the magnetic flux from the pole piece 101e returns to the reverse magnetic polarity through the stator 101a is minimized. When the rotation angle is 0 degree, the torques of the right rotation and the left rotation are balanced and the torque becomes 0. As a result, the torque characteristics as shown in FIG.

By the way, the ideal torque characteristic of the rotor required for the electric lock is as shown in FIG. 15 (a). In the figure, the rotation state of the rotor is -45 degrees (corresponding to the first initial reversal position) and the unlocked state is shown at 45 degrees (corresponding to the second initial reversal position), and -45 degrees. The range from A to A is the range of play between the rotor of the rotary solenoid and the dead bolt. In this area A, the dead bolt is not driven even if the rotor rotates. The torque required in this area is the torque T1 required to rotate the thumb turn 100b.
Only. When the rotor further rotates and enters the region C, the deadbolt is driven in accordance with the rotation of the rotor, and enters a region moving within a strike (not shown). The torque required in this region is the torque T2 required to move the deadbolt. In addition to this torque T2, a torque of T3 is required in consideration of the case where a lateral pressure is applied to the deadbolt. Then, when the rotation further progresses and the dead bolt separates from the strike, the lateral pressure disappears, the dead bolt is driven by the torque of T2 to be unlocked, and finally the play range A is reached. The above torque is a torque characteristic required for the rotary solenoid at the time of energization for locking and unlocking the dead bolt, but separately from this, when the rotary solenoid is not energized, that is, when the thumb turn is rotated in a non-excitation state, The characteristic shown in FIG. 15 (b) is required for the ideal torque generated between the rotor and the stator of the rotary solenoid. In other words, in addition to the operation feeling when manually operating with the thumb turn, the dead bolt is set from the center of the housing with face so that the dead bolt does not stop in the middle of movement if you release your hand during the rotation angle. When it is located on the right side, it is necessary to have a torque characteristic that returns to the right end, and conversely when it is on the left side from the center, it exhibits a snap action of advancing to the left end. In a normal electric lock, such a torque characteristic is realized by a spring mechanism or the like.

However, the torque characteristic of the conventional rotary solenoid when energized is considered to be 14th considering the bistable characteristic when not energized.
The characteristic is as shown in (a) in the figure, there is only one torque beak, and the torque in the non-excited state is small. Therefore, in order to obtain a torque that counteracts when the dead bolt is subjected to lateral pressure, it is necessary to increase the energizing current value to cover the region C where lateral pressure is applied to the dead bolt. Since the torque is weak, the feeling of manual operation is poor, and the deadbolt stops halfway. Therefore, it is customary to add a spring or the like.

By the way, in the surface-mounted locking / unlocking device using such a rotary solenoid, unlike a normal mechanical lock, the locked state or the unlocked state is uniquely determined by the position of the deadbolt. For this reason, when attaching an electric locking / unlocking device to a door of the wrong type, the electric lock must be turned upside down so that the dead bolt is always locked in a specific direction. Disappear.

However, when installed outdoors, it is important to prevent flooding due to rain etc. in terms of durability of the electric locking and unlocking device, and it is usually difficult to completely waterproof the inside of the electric locking and unlocking device. Therefore, a structure is adopted in which water that has entered the inside is quickly drained to the outside. That is, the upper and lower sides when the electric locking and unlocking device is installed are uniquely determined, and a method of obtaining waterproofness by taking measures such as providing a hole for draining water under the upper and lower is adopted. For structures,
When the door is installed upside down on a wrong door, rainwater or the like easily enters through a drain hole, and water accumulates inside the electric locking / unlocking device, and improvement is desired.

Further, in the case of the electric locking / unlocking device, there are cases where the locking / unlocking operation is performed by electric conduction and cases where it is manually performed. Since these locking / unlocking operations are mixed, the operator is always informed of the locked / unlocked state. Therefore, an unlocking detection unit is required.

[Problems to be Solved by the Invention] A first aspect of the present invention proposed to solve the above problems.
It is an object of the present invention to provide an electric locking / unlocking device in which the torque characteristic at the time of non-excitation is increased without using a means such as a spring and the rotation operation of the rotor is stabilized.

A second object of the present invention is to increase the torque characteristics at the time of non-excitation without using means such as a spring to stabilize the rotation operation of the rotor and to flatten the torque characteristics at the time of excitation. To provide a locking device.

A third object is to provide an electric application and unlocking device in which the torque characteristic at the time of excitation is almost flattened.

Furthermore, the fourth object is that even when the doors are different in their own way,
An object of the present invention is to provide an electric device and an unlocking device that can be used without being turned upside down.

[Means for Solving the Problem] The first object is achieved by the first invention,
According to the first aspect of the present invention, a rotor made of a permanent magnet is arranged around a rotor so as to surround a stator having an air gap, and the polarity of a current flowing through a coil wound around the stator is changed. By inverting the rotor, a rotary solenoid that allows the rotor to reciprocate between the first and second initial reversal positions located on the left and right with the air gap of the stator interposed therebetween is built into the faced housing. The rotary solenoid is an improvement of an electric locking / unlocking device that locks and unlocks a rotary bolt interlocking with a rotor by advancing and retracting the dead bolt, wherein the rotary solenoid has a gap width of an air gap opposite to the stator side. When the coil wound on the stator side is energized, the rotor is moved from the first initial reversal position to the above-described state. The torque characteristic is such that a peak value is obtained on the way to the air gap on the data side and on the way to the second initial reversal position after passing the air gap. (Corresponding to claim 1).

In the preferred embodiment of the first aspect of the invention, a step is formed at each end of the rotor constituting the rotary solenoid to form a torque characteristic curve during excitation and non-excitation. It is smooth (corresponding to claim 5).

A second object is achieved by the second invention, which comprises arranging a stator having an air gap so as to surround a rotor made of permanent magnets. By reversing the polarity of the current flowing through the coil wound on the stator, the rotor is reciprocated forward and backward between the first and second initial reversal positions located on the left and right sides of the air gap of the stator. An improvement of an electric locking / unlocking device in which a rotary solenoid adapted to be moved is built in a surface type housing, and the rotary solenoid is operated by moving a dead bolt interlocking with a rotor to advance and retreat to unlock. Compared with the bistable type rotary solenoid, the gap of the air gap opposite to the stator side is sufficiently smaller than the facing surface of the rotor on the stator side. And forming what, to stabilize the rotation of the rotor, to the rotor (corresponding to claim 2) which has a structure which is added an elastic force by the urging means such as a spring.

Further, a third object is achieved by a third aspect of the present invention. In the third aspect of the invention, the rotary solenoid used for the electric lock described in the first or second aspect is built in a surface-mounted housing. The dead bolt performs locking and unlocking operations by alternately protruding a part of the dead bolt from both side surfaces of the housing in the housing. A recess is provided in the place adjacent to the dead bolt of
In the recess, a lock / unlock detection means for detecting a position change of the dead bolt and detecting a locked / unlocked state in combination with an element such as a magnet provided in a part of the dead bolt is incorporated. The structure is such that the members can be housed in a reversible manner (corresponding to claim 3).

Further, in a fourth invention which is an improvement of the third invention,
The member constitutes a trigger bolt, and has a structure further incorporating a door opening detecting means for detecting an opening / closing operation of the trigger bolt and detecting an open / closed state of the door (corresponding to claim 4).

[Operation] In the first aspect of the present invention, since one of the air gaps between the stators of the rotary solenoid is made larger and the other is made smaller, when the rotor starts rotating from the first initial reversal position, the rotation direction is changed. When the torque rises and the magnetic resistance between the rotor and the stator in the rotating direction near the narrow gap between the stators suddenly decreases, the first peak value is generated.

When the rotation further advances and the magnetic resistance between the rotor and the stator in the rotation direction near the wider gap between the stators sharply decreases, a second peak value occurs. However, as the rotation further advances, the torque gradually decreases. Go.

On the other hand, when the rotor starts rotating from the first initial reversal position by an operation such as a thumb turn, the magnetic flux of the permanent magnet on the rotor flows to the magnetic pole on the opposite side through the stator when the non-excited torque characteristic is used. Since it rotates in the direction in which the magnetic resistance increases, it receives a torque in the direction opposite to the rotating direction at the time of energization, and this torque has a peak value on the way until the rotation angle becomes zero. Then, when the rotation angle approaches 0 degrees, the right rotation and the left rotation balance and the torque becomes 0,
When the rotation is further advanced, the magnetic resistance is reduced in the same direction as when the rotation is started. In this case, the rotation direction is the same as that during energization, and the torque received at that time obtains the second peak value on the way to the second initial reversal position.
In this case, since the torque characteristic of the non-excitation becomes large, the rotor does not stop in the middle of the rotation, and the first initial inversion position is maintained until the rotor reaches the rotation position of 0 from the first initial inversion position. , And conversely, before passing through the rotation position of 0 and reaching the second initial reversal position, it receives a force toward the second initial reversal position (corresponding to claim 1).

Further, in this case, in the case where the concave step portions are formed at both end portions of both end surfaces of the rotor, the degree of change in the gap with respect to the rotation angle of the rotor and the stator becomes gentle, so that the curve of the torque characteristic also becomes gentle. (Claim 5
Corresponding to). In the second invention, the air gap formed on the stator side is sufficiently larger than the width of both end surfaces of the rotor as compared with the conventional bistable rotary solenoid, so that the rotor is in the first initial inversion. When the rotation starts slightly from the position, the first peak value is generated because the magnetic flux generated by energizing the coil on the stator side increases through the gap and the end face of the rotor, and the torque gradually decreases as the rotation further proceeds. As the rotation angle goes beyond 0 degree, the magnetic flux of the permanent magnet on the rotor side increases through the stator, which causes a second peak value. However, in this case, since the gap of the air gap on the stator side is small,
The fluctuation of the torque between the first peak and the second peak is small, and therefore, the curve of the torque is flatter than in the first invention.

On the other hand, in the non-excitation state, torque is generated in the direction in which the magnetic resistance is increased, that is, in the direction opposite to the rotation direction, until the rotor starts rotating and the end face of the rotor contacts the stator in the rotation direction. When the rotation further advances and the end face of the rotor is applied to the stator in the rotation direction, the torques of the right rotation and the left rotation are balanced and the torque becomes zero.

Then, when the rotation further advances and the end face of the rotor separates from the stator opposite to the rotating direction, torque in the rotating direction is generated in the rotor (corresponding to claim 2).

According to the third and fourth aspects of the present invention, the members housed in the housing are replaced by being turned left and right, so that the members are built into the members in accordance with the state of projection of the dead bolts which alternately protrude from both side surfaces of the housing. Since the position of the detected detecting means can be changed, the right and left doors can be handled without turning the housing upside down.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of a rotary solenoid which is a main part of an embodiment of the first invention.

Reference numeral 1 denotes a stator, which is formed by butt-bonding a yoke made of a high magnetic material and having a symmetrical shape at a central joint 1a. A bobbin 2b is attached to the joint 1a, and a coil 2a is placed on the bobbin 2b. Is wrapped around.

As shown in FIGS. 1A and 1B, such a stator 1 is formed with an air gap having a significantly different size, and a hollow portion formed at the center has a rotor 3 provided with a rotating shaft. Is arranged.

The rotor 3 has a structure in which rotor poles 3c, 3c are attached to both sides of a shaft core 3b to which a rotation shaft 3a is attached, with permanent magnets 31, 31 interposed therebetween. Stepped portions 3d, 3d are recessed at both ends of the pole.

In this embodiment, the rotor 3 has a structure in which concave steps 3d, 3d are provided at both ends of both end surfaces, but such a concave step is not always essential.

2A and 2B show torque characteristics of a rotary solenoid having the same basic structure as that shown in FIG. 1 in which concave steps are not formed at both ends of both end surfaces of the rotor.
Shows the characteristics at the time of excitation, and (b) shows the characteristics at the time of non-excitation. On the other hand, FIG. 2a shows correspondingly the torque characteristic of the rotary solenoid in which concave cross sections are formed at both ends of both end faces of the rotor shown in FIG.

Comparing the two, there is almost no difference in the torque characteristics at the time of non-excitation, but the concave step portions 3d
It can be seen that in the case of forming, the two peak values are suppressed and a gentle curve is shown as a whole.

In each of the figures, (c) shows a theoretical torque characteristic required when the rotary solenoid is used for the electric lock, and this characteristic is shown in FIG. 15 which has already been described.

Thus, as is clear from these torque characteristics,
In the rotary solenoid according to the first aspect of the present invention, the characteristic of torque at the time of excitation is lower than that of the conventional one in the path of the rotor 3 from the first initial reversal position to the air gap (a) on the stator side. It is required for the electric locking and unlocking device because it changes to a characteristic having two peak values on the way and on the way to the second initial reversal position after passing through the air gap (a). The conditions can be satisfied sufficiently.

Also, as shown in FIG. 2 and FIG. 2 (b), the torque characteristic at the time of non-excitation is larger than that of the conventional one. Even if the thumb turn is released during the movement of the deadbolt, the deadbolt moves to the first initial reversal position or the second initial reversal position, so that the locking and unlocking operation is more reliable and the operational feeling is improved. Therefore, a biasing means such as a spring, which is usually provided, is not required, so that the structure is simplified and the size can be further reduced.

3 and 4 show the external structure inside the housing of the electric locking / unlocking device of the first invention.

Reference numeral 11 denotes a surface-mounted housing. Screws are screwed into screw holes 11a formed at four corners of the housing, and the housing is attached to the inner surface of the door 12. A case 15 containing the rotor 3 of the rotary solenoid having the above-described structure is provided in the imposition housing 11, and the coil 2 wound around the stator 2 can be seen above the case 15. A link 14 attached to the rotary shaft of the rotor 3 of the rotary solenoid projects below the case 15, and a projection 14a is provided at the tip of the link 14. The protrusion 14a is engaged with a recess formed on the upper side surface of the dead bolt 13 provided on the lower side of the case 15, and three recesses 13a, 13b into which the protrusion 14a is recessed are formed in this recess. , 1
3c is provided on three sides as shown in the figure.

In addition, between the three concave portions 13a, 13b, 13c, the convex portions 13d, 1
3e is formed to prevent the protrusion 14a from slipping out from the recessed portions 13a and 13c even when the dead bolt 13 is forcibly slid when the dead bolt 13 is in the locked and unlocked position. The link 14 is not rotated. Such a structure is useful for crime prevention.

On the other hand, in the center of the lower side of the dead bolt 13, the protrusion 13
When the dead bolt 13 is slid by driving the rotor 3 of the rotary solenoid, the protrusion 13 is provided with an operating piece of the micro switch 15 provided therebelow.
By moving 15a, the locked / unlocked state is detected.

Further, the rotary shaft 3a of the rotor 3 of the rotary solenoid is provided with a thumb turn 12 having a knob 12a having a shape in which a part of the circular shape is cut off. The dead bolt 13 is provided when the rotary solenoid is not excited. The lock and unlock can be easily performed by rotating the thumb turn 12.

Further, the rotating shaft of the surface-mounted electric application and unlocking device on which the thumb turn 13 is not provided is connected to a cylinder lock 17 attached to the outer surface of the door 12 via a connecting pipe 19. I have.

According to the electric turning and unlocking device having such a structure, since the rotor of the rotary solenoid and the thumb turn are integrally connected, the operation by the electric control of the electric turning and unlocking device and the manual operation by the thumb turn completely match. I do. In the embodiment, these operations and the operation of the cylinder lock 17 are completely the same.

FIG. 5 shows an embodiment of a rotary solenoid constituting a main part of the second invention.

Parts corresponding to those of the first invention are denoted by the same reference numerals and description thereof is omitted. However, in the present invention, the air gaps (c) and (d) formed on the stator 1 side are the same as those of the conventional bistable. It is significantly smaller than the mold.

FIG. 6 shows the torque characteristics of this rotary solenoid, where (a) shows the torque characteristics when excited and (b) shows the torque characteristics when not excited.

In the case of this rotary solenoid, the torque characteristic at the time of excitation becomes much gentler than that of the first invention as shown in FIG. 6 (a), and the characteristic required for the electric locking / unlocking device is sufficient. However, since the non-excited torque characteristic has a characteristic different from that of the total stable type as shown in FIG. 3B, it is necessary to supplement the characteristic by a biasing means such as a spring. Such a biasing means may be the same as the conventional one.

 Next, an embodiment of the third invention will be described.

This third invention relates to a surface-mounted locking / unlocking device as in the first and second inventions.
A rotary solenoid, which is an essential part of the first and second inventions, can be used.

Hereinafter, the description of the rotary solenoid will be omitted, and the structure inside the housing, which is a main part of the third invention, will be described.

FIG. 7 shows the internal structure of the housing, which is the essential part of the third invention.

When the rotary solenoid (not shown) is energized, the dead bolt 13 can be locked and unlocked by alternately protruding a part of the dead bolt 13 from both side surfaces of the housing 11 in the housing 11. The housing 11 is provided with a recess 11b at a position adjacent to the dead bolt 13, and in the recess 11b,
A reed switch 20a which is combined with an element such as a magnet 21 provided in a part of the dead bolt 13 to detect a position variation of the dead bolt 13 to detect a locked / unlocked state.
A member 20 having a built-in detection means such as the above is housed, and the member 20 has a structure capable of being housed in the recess 11b so as to be flipped right and left.

FIG. 8 (a) is a view showing a locked state when the electric locking / unlocking device is attached to a right-hand door (not shown).
The reed switch 20a inside the member 20 is housed in the recess 11b in a direction to come to the left. Therefore, when the dead bolt 13 is driven to the left, the magnet 21 and the reed switch 20a come close to each other, the reed switch 20a is turned on, and the locked state is determined.

FIG. 8 (b) shows the unlocked state in which the deadbolt 13 is driven to the right, contrary to the above, and since the magnet 21 and the reed switch 20a are remote, the reed switch 20a is turned off.
It becomes F and the unlocked state is determined.

FIG. 9 (a) is a view showing a locked state when this electric locking / unlocking device is attached to a left-hand door (not shown). In such a case, the member 20 is connected to a reed switch inside thereof.
20a is housed in the recess 11b of the housing 11 with a surface facing the right side. Therefore, in this case, when the dead bolt 13 is driven to the right, the magnet 21 and the reed switch 20a come close to each other, the reed switch 20a is turned on, and the locked state is determined, and conversely, the dead bolt 13 is moved to the left. When the magnet 21 and the reed switch 20a are remote, the reed switch 20a is turned off and the unlocked state is determined (see FIG. 9 (b)).

In the case of the above example, the magnet 21 built into the deadbolt 13
However, the reed switch 20a is turned off when the reed switch 20a is slightly separated from the reed switch 20a built in the member 20, so that the locking signal is obtained by the reed switch 20a only when the dead bolt 13 is securely in the locking position. However, the reed switch 20a can be turned off in the locked state and the reed switch 20a can be turned on in the unlocked state by reversing the mounting direction of the member 20.

In the above embodiment, an example in which a magnet and a reed switch are used as the lock / unlock detection means is shown. However, the present invention is not limited to this configuration. For example, a microswitch provided with a protrusion on the deadbolt side and provided in the lock / unlock detection unit is provided. It is also possible to detect it by means such as, and it is also possible to use an element of an optical system or the like.

Next, FIG. 10 is a diagram showing an internal structure of a housing of an electric locking / unlocking device which is a main part of the fourth invention.

In the figure, 22 is a member constituting the trigger bolt,
In this trigger bolt 22, in addition to the reed switch 20a,
This is different from the third invention in that a door opening detecting means composed of a trigger bolt portion 22a, a spring 23 and a micro switch 24 is integrally incorporated.

When the door is closed, when the door is closed, the trigger bolt portion 22a is retracted, and the operating piece of the micro switch 24 is pushed through the spring 23 to operate the micro switch 24. On the contrary, when the door is opened, the trigger bolt 22a is projected by the elastic force of the spring 24, and the operating piece of the micro switch 24 is not pushed in and does not operate. Therefore, the opening of the door is detected by the operation of the microswitch 24. The spring 23 in the member 22
Is provided to allow a margin for the stroke in which the trigger bolt portion 22a sinks.

According to the fourth aspect, since the locking / unlocking detecting means and the opening degree detecting means are mounted in the surface-mounted housing so as to be able to be reversed left and right, one type of electric power can be provided even for a door having a different hand. A locking / unlocking device can be used, problems such as waterproofness can be solved, and a door opening detecting means is not required, so that a highly reliable electric locking / unlocking device can resist.

The electric locking / unlocking device of the present invention as described above can be used not only at the entrance of a house, but also at a gate, a sliding door, a locker, a vertical, or the like, and has a wide response development.

According to the first aspect of the present invention, an ideal torque characteristic required for electric locking and unlocking at the time of excitation is obtained, and the torque characteristic at the time of non-excitation is improved. Since the snap action can be realized without requiring a biasing means such as a spring, it is possible to reduce the number of parts, and it is possible to realize a small and lightweight electric locking / unlocking device with a good feel even during manual operation. In addition, an inexpensive electric locking / unlocking device can be realized with a reduced number of parts compared to a linear solenoid or a motor operated type.

According to the invention described in claim 5, the non-excitation torque characteristic similar to that of the first invention can be obtained, and the torque characteristic upon excitation can be further flattened.

According to the second aspect of the present invention, the torque characteristic required for electric locking / unlocking at the time of excitation can be obtained.

Further, according to the third aspect of the present invention, the housing position of the member for locking / unlocking detection housed in the surfaced housing is reversed left and right, so that the door can be used without any inversion without reversing the vertical position of the housing. Can be easily handled.

According to the fourth aspect of the present invention, since the member is a trigger bolt and the door detection means is incorporated therein, a small electric locking and unlocking apparatus can be provided without adding the door detection means.

[Brief description of the drawings]

FIG. 1 is an explanatory view of the structure of a rotary solenoid which is an essential part of the first invention, FIG. 2 is a diagram showing its torque characteristics, and FIG. 2a is a diagram showing the torque characteristics of the improved electric locking / unlocking device of the first invention. FIGS. 3 and 4 are explanatory views of the structure inside a housing of an electric locking / unlocking device according to an embodiment of the first invention, and FIG. 5 is a description of the structure of a rotary solenoid which is a main part of the second invention. Fig. 6 is a torque characteristic diagram thereof, Fig. 7 is an internal structure diagram of an electric locking / unlocking device showing a main portion of the third invention, Figs. 8 (a), 8 (b) and 9 (a). , (B) is an explanatory view of the operation of the third invention, FIG. 10 is an internal structural view of an electric locking and unlocking device showing a main part of the fourth invention, and FIGS. Fig. 13 is an external view of the lock device, Fig. 13 is a structure explanatory diagram of a conventional rotary solenoid, Fig. 14 is its torque characteristic diagram, and Fig. 15 is required for an electric locking / unlocking device. It is a diagram showing a torque characteristic. [Explanation of Symbols] 1 ... Stator 2 ... Coil 3 ... Rotor 3d ... Steps recessed at both ends of rotor (A) to (D) ... Air gap 11 ... Surface type housing 13 ... … Dead bolt 11b …… Recess 20 …… Member 20a …… Locking and unlocking detection means 22 …… Member that constitutes the trigger bolt 24 …… Door opening detection means

Claims (5)

(57) [Claims] 1. A rotor made of permanent magnets is arranged around a rotor so as to enclose a stator having an air gap, and the polarity of a current flowing through a coil wound around the stator is reversed. As a result, a rotary solenoid that allows the rotor to reciprocate between the first and second initial reversal positions located on the left and right with the air gap of the stator interposed therebetween is incorporated in the faced type housing. In an electric locking / unlocking device that locks and unlocks by moving a dead bolt interlocking with the rotor of a rotary solenoid to advance and retreat, the rotary solenoid has a structure in which the gap width of the air gap opposite to the stator side is different. Thereby, when the coil wound on the stator side is energized, the rotor moves from the first initial reversal position to the stator side. An electric locking / unlocking feature that a torque characteristic is obtained so as to obtain a peak value on the way to the a gap and on the way to the second initial reversal position after passing through the air gap. apparatus. 2. A rotor made of a permanent magnet is arranged around an air gap so as to surround a stator having an air gap, and the polarity of the current flowing through a coil wound around the stator is reversed. As a result, a rotary solenoid that allows the rotor to reciprocate between the first and second initial reversal positions located on the left and right with the air gap of the stator interposed therebetween is incorporated in the faced type housing. In an electric locking / unlocking device that performs a locking / unlocking operation by moving a dead bolt interlocking with a rotor of a rotary solenoid to advance and retreat, the rotary solenoid is characterized in that a bistable rotary solenoid is provided in an air gap opposite to the stator. In comparison with the above, the rotor is formed to be sufficiently smaller than the opposing surface on the stator side, and the rotational operation of the rotor is stabilized. So that the electrical unlocking device is added to the elastic force by the urging means such as a spring for the rotor. 3. A rotary solenoid according to claim 1 or 2 is built in a surface-mounted housing, and the rotor of the rotary solenoid is reciprocated forward and backward to move the dead bolt forward and backward to lock it. An electric locking / unlocking device that performs an unlocking operation, wherein the deadbolt is locked and unlocked by alternately protruding a part of the deadbolt from both side surfaces of the housing in the housing. Has become
A recess is provided at a location adjacent to the dead bolt in the housing, and in this recess, a position variation of the dead bolt is detected by being combined with an element provided in a part of the dead bolt. An electric locking / unlocking device having a structure in which a member including a locking / unlocking detecting means for detecting a locking / unlocking state can be housed in a reversible manner. 4. The member constitutes a trigger bolt, and further has a built-in door detection means for detecting an opening / closing state of a door by detecting a retracting operation of the trigger bolt.
An electric locking and unlocking device according to claim 1. 5. The electric locking and unlocking device according to claim 1, wherein a concave step is formed at each end of both side surfaces of the rotor of the rotary solenoid.