JP2007100475A - Electric locking unit, locker provided with electric locking unit and electric locking system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric locking unit which makes forced unlocking possible, a locker making use of the electric locking unit, and an electric locking system. <P>SOLUTION: The electric locking unit 1 is provided with a locking member 10 which advances and withdraws against the outside, and is constituted so that it switches between unlocking and locking by the projection or recession of the locking member 10. Then the electric locking unit 1 has a rotating member 33, a coil spring 15 and an electric motor 11. The rotating member 33 rotates about a rotary shaft 330. Then one end part of the coil spring 15, which is wound on the outer periphery of the rotary shaft 330, is fixed to the rotating member 33, and the other end part is fixed to the locking member 10. The electric motor 11 performs rotary drive of the rotating member 33, and the locking member 10 is constituted so that it advances and withdraws in the direction which is nearly orthogonal to the rotary shaft 330 of the coil spring 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lock unit that can be electrically unlocked and locked, and mainly relates to an electric lock unit suitable for office furniture such as a locker.

  Conventionally, there is a lock unit for moving a lock bolt forward and backward, for example, one configured to electrically drive the lock bolt (see, for example, Patent Document 1). According to such an electric lock unit, for example, It can be unlocked and locked by entering a password. Further, for example, the electric lock units of a plurality of lockers can be unlocked or locked all at once by centralized control.

  However, the conventional electric lock unit has the following problems. That is, for example, when forcible unlocking is necessary, such as when the password is forgotten, unlocking by other methods is difficult, and there is a possibility that sufficient convenience on the user side cannot be ensured.

JP 2001-250368 A

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide an electric lock unit capable of forcibly unlocking, a locker and an electric lock system using the electric lock unit.

The present invention is an electric lock unit that includes a lock member that moves forward and backward with respect to the outside, and is configured to switch between unlocking and locking when the lock member protrudes or retracts,
A rotating member configured to rotate about a rotation axis;
A coil spring having one end fixed to the rotating member and the other end fixed to the locking member, and wound around the outer periphery of the rotating shaft;
An electric motor that rotationally drives the rotating member;
The electric lock unit is characterized in that the lock member is configured to advance and retreat in a direction substantially perpendicular to the rotation shaft.

In the electric lock unit of the first invention, the coil spring is disposed between the lock member and the rotating member. The coil spring has the one end fixed to the rotating member and the other end fixed to the locking member.
Therefore, in the electric lock unit, the lock member can be advanced and retracted without changing the rotational position of the rotary member by causing elastic deformation of the coil spring.

  As described above, according to the electric lock unit of the first aspect of the invention, the lock member can be driven without rotating the rotating member and the electric motor, and forcible unlocking can be performed by driving the lock member. Is possible.

A second invention is a locker provided with an opening and closing door,
The electric lock unit according to claims 1 to 3,
An engaging member that engages with a lock member of the electric lock unit;
A sub-lock unit that is a lock mechanism configured to drive the engagement member,
The electric lock unit is configured to prohibit the opening and closing of the open / close door by advancing the lock member outward.
The sub-block unit is a rocker configured to drive the engagement member so as to retract the lock member against the elastic force of the coil spring of the electric lock unit ( Claim 4).

  The rocker according to the second invention includes the electric lock unit according to the first invention and the sub-block unit for driving the engagement member. The sub-block unit is configured such that the lock member of the electric lock unit can be retracted by driving the engagement member. Therefore, the locker can be forced to shift from the locked state by the electric lock unit to the unlocked state using the sub-block unit. Here, the sub-block unit can allow the engagement member to be driven via a lock mechanism. Therefore, according to this sub-block unit, the crime prevention property can be maintained high while suppressing the possibility of the locker being easily unlocked.

  As described above, in the locker of the second invention, the locked state by the electric lock unit can be forcibly changed to the unlocked state by using the sub-block unit. The above-mentioned locker has high convenience that enables forced unlocking while maintaining high security.

A third invention is an electric lock system including a plurality of lock mechanisms of two or more,
While having the electric lock unit according to any one of claims 1 to 3 as the lock mechanism,
The electric lock system includes a control means for controlling the electric lock units.

  The electric lock system according to the third aspect of the invention has a plurality of electric lock units according to the first aspect of the invention and includes control means for controlling the electric lock units. According to this electric lock system, the electric lock units can be centrally controlled using the control means. The electric lock unit can be unlocked by forcibly retracting the lock member as described above. Therefore, in the electric lock system, each electric lock unit can be unlocked individually even under locking by central control.

  Thus, the electric lock system is an excellent system in which each electric lock unit can be unlocked individually, and the usability on the user side is highly secured.

  In the electric lock unit of the first invention, as a method for forcibly driving the lock member, for example, a method including a work process in which a special tool is essential, or a method that requires release of another lock mechanism Etc. are preferably employed. In this case, it is possible to prevent the lock member from being driven maliciously, and it is possible to keep the crime prevention property of the electric lock unit high.

Preferably, the electric motor and the rotating member are connected via a gear mechanism that decelerates and transmits the rotational motion from the electric motor toward the rotating member.
In this case, the holding torque (static torque) of the electric motor can be amplified via the gear mechanism, and a large torque required for the rotation of the rotating member can be secured. Therefore, it is difficult to forcibly rotate the rotating member from the lock member side. Therefore, the operational effect of the first aspect of the present invention that the lock member can be rotated without rotating the rotary member becomes more effective.
In particular, a gear engaging portion between the worm gear on the electric motor side and the worm wheel on the rotating member side may be provided between the electric motor and the rotating member. In this case, there is very little possibility that a rotational motion is transmitted from the rotating member side toward the electric motor. Therefore, the operational effect of the first invention is further effective.

In addition, two contact switches having contact pieces for turning on and off the electrical contacts are provided on the outer peripheral side of the rotating shaft,
A substantially disk-shaped member provided with a convex portion in contact with the contact piece at one place in the circumferential direction, and has a cam plate that rotates together with the rotating member, corresponding to each of the contact switches. (Claim 3).
In this case, when the rotating member is forcibly rotated, there is a high possibility that the convex portion and the contact piece come into contact with the rotation. Therefore, the effect of the first aspect of the present invention that the locking member can be advanced and retracted while the rotating member is stationary is very effective.

Example 1
This example is an example related to the electric lock unit 1 corresponding to forced unlocking. The contents will be described with reference to FIGS.
As shown in FIG. 1, the electric lock unit 1 of the present example includes a lock member 10 that moves forward and backward with respect to the outside, and is configured to switch between unlocking and locking when the lock member 10 protrudes or retracts.
The electric lock unit 1 has a rotating member 33 that rotates about a rotating shaft 330, one end portion fixed to the rotating member 33 and the other end portion fixed to the locking member 10, and The coil spring 15 wound around the outer periphery of the rotating shaft 330 and the electric motor 11 that rotationally drives the rotating member 33 are provided.
The lock member 10 is configured to advance and retract in a direction substantially perpendicular to the rotation shaft 330.
Hereinafter, this content will be described in detail.

  As shown in FIGS. 1 to 4, the electric lock unit 1 of this example includes an electric motor 11 and a third gear (hereinafter referred to as a third gear) as the rotating member 33 inside a unit housing 2 that has a substantially rectangular parallelepiped outer shape. The gear mechanism 3 including the gear 33), the coil spring 15, and the like are accommodated. The electric lock unit 1 includes a substantially rod-shaped lock member 10 disposed so as to penetrate the short side direction of the unit housing 2. Furthermore, in the electric lock unit 1, two contact switches 17 and 18 are disposed on the outer peripheral side of the rotating shaft 330 that penetrates the upper surface side thereof.

  As shown in FIG. 2, the unit housing 2 is a combination of a case 22 including a bottom plate that forms an attachment surface and a cover 21 that forms an upper surface. The cover 21 and the case 22 have rotation support portions 211 to 213 and 221 to 223 for supporting the rotation shafts 310, 320, and 330 of the gears 31 to 33 constituting the gear mechanism 3. Each rotation support part 211-213, 221-223 is a substantially cylindrical convex part which protrudes toward the inner side of the unit housing 2, and the hole for accommodating a rotating shaft is drilled in the center. . The rotation shafts 310, 320, and 330 can be rotated by a pair of rotation support portions (a combination of 211, 221, 212, 222, 213, and 223) that are disposed to face each other when the case 22 and the cover 21 are combined. We support in the state.

As shown in FIGS. 1 and 2, the electric motor 11 is a DC brush motor including a rotating shaft 110. A worm gear 111 that engages with the first gear 31 of the gear mechanism 3 is extrapolated at the tip of the rotating shaft 110.
The gear mechanism 3 includes a first gear 31 on the electric motor 11 side, a third gear 33 on the lock member 10 side, and an intermediate second gear 32. The gear mechanism 3 of this example is configured to decelerate and transmit the rotational motion from the electric motor 11 toward the third gear 33 by the reduction ratio 200.

  As shown in FIGS. 1 and 2, the first gear 31 has a substantially two-stage cylindrical outer surface composed of a worm wheel portion that engages with the worm gear 111 of the electric motor 11 and a spur gear portion having a smaller diameter than the worm wheel portion. It has a shape. The second gear 32 has a substantially two-stage cylindrical outer shape including a spur gear portion that engages with a spur gear portion of the first gear 31 and a spur gear portion that has a smaller diameter than the spur gear portion. Is. The third gear 33 is a spur gear that engages with a small-diameter spur gear portion of the second gear 32. The first to third gears 31 to 33 are extrapolated to the rotary shafts 310, 320, and 330 that are supported so as to be rotatable inside the unit housing 2, and rotate integrally with the rotary shafts 310, 320, and 330. It is fixed to do. Only the rotating shaft 330 of the third gear 33 passes through the cover 21, and two cam plates 331 and 332 (see FIG. 4) are fitted into this penetrating portion by changing the position in the axial direction. It is.

  As shown in FIGS. 1 and 3, the lock member 10 is a substantially rod-shaped member having a substantially circular cross section. The lock member 10 is engaged with a mating member (not shown) by protruding toward the outside of the unit housing 2. The lock member 10 advances and retreats in the axial direction while penetrating the side surface and the short side direction of the unit housing 2. A pin 101 that protrudes toward the case 22 substantially orthogonal to the axial direction is provided on the outer peripheral surface of the substantially intermediate portion of the lock member 10. The pin 101 is formed so as to be accommodated in a slot-like slit 220 formed in the bottom plate forming the lower surface of the case 22. The pin 101 is formed so as to advance and retract in the slit 220 in accordance with the advancement and retraction of the lock member 10. Further, the pin 101 has a portion that supports the end of the coil spring 15 at an intermediate portion between the tip portion accommodated in the slit 220 and the root portion on the lock member 10 side.

  As shown in FIGS. 1 and 3, the coil spring 15 is wound with a slight gap provided on the outer peripheral side of the rotation shaft 330 of the third gear 33, more specifically, on the outer periphery of the rotation support portion 223 on the case 22 side. It is a turn. One end of the coil spring 15 is bent approximately 90 degrees toward the inner peripheral center, and the tip of the coil spring 15 reaches the rotating shaft 330. In this example, the one end is inserted and fixed in a hole drilled in the outer periphery of the rotating shaft 330. The other end of the coil spring 15 is bent toward the outer peripheral side. Further, a locking portion 158 that is folded back in a substantially U shape is provided at the tip portion. The locking portion 158 is configured to be supported by the pin 101 in a state where the pin 101 of the lock member 10 is accommodated inside the folded portion.

  As shown in FIG. 4, the two contact switches 17 and 18 are contact switches including contact pieces 17 and 18 that rotate around one end. The contact switches 17 and 18 are configured to disconnect the electrical connection and stop the power supply to the electric motor 11 when the contact switches 171 and 181 are rotated so as to be pushed in. In this example, as described above, the contact switches 17 and 18 are operated by the cam plates 331 and 332 fitted to the rotation shaft 330 of the third gear 33. The cam plates 331 and 332 are substantially disk-shaped members, and are provided with convex portions 331t and 332t that protrude smoothly toward the outer peripheral side at one circumferential position. The cam plates 331 and 332 are configured such that the convex portions 331 t and 332 t come into contact with the contact pieces 171 and 181 according to the rotation angle of the third gear 33.

  In the electric lock unit 1 of this example, as shown in FIGS. 2 and 4, two contact switches 17 and 18 as described above are attached to the outer surface of the cover 21. In this example, the two contact switches 17 and 18 are arranged by changing the installation height based on the outer surface of the cover 21. On the other hand, as described above, the two cam plates 331 and 332 fitted to the rotating shaft 330 of the third gear 33 have their axial positions changed. That is, in this example, the two cam plates 331 and 332 and the two contact switches 17 and 18 correspond to each other one to one. Each combination is set so as to correspond to both ends of the advance / retreat stroke of the lock member 10. That is, when the lock member 10 reaches both ends of the forward / backward stroke, the cam plates 331 and 332 operate the contact switches 17 and 18 to stop energization of the electric motor 11.

Next, the function of the electric lock unit 1 of this example configured as described above will be described.
First, the basic operation of the electric lock unit 1 will be described. When electric power is supplied to the electric motor 1, the rotating shaft 110 rotates, and the third gear 33 and the rotating shaft 330 rotate via the gear mechanism 3. When the rotating shaft 330 rotates, the coil spring 15 itself having an end fixed to the rotating shaft 330 rotates, and the locking portion 158 that is the other end rotates. As the locking portion 158 rotates, the lock member 10 strokes and projects outward. Thus, the lock member 10 protrudes and engages with the mating member, whereby a locked state can be formed.
Here, the cam plate 331 contacts the contact piece 171 of the contact switch 17 at the same time as the lock member 10 is fully projected. As a result, the contact switch 17 cuts the electrical path to the electric motor 11 and the power supply to the electric motor 11 is stopped.

On the other hand, when the unlocked state is formed, the electric motor 11 is applied with a current having the opposite direction of plus and minus via the other contact switch 18. Then, the electric motor 11 rotates in the reverse direction, and the third gear 33 and the rotation shaft 330 rotate in the reverse direction. Then, the coil spring 15 rotates according to the reverse rotation of the rotating shaft 330, and the lock member 10 moves backward. Thereby, the lock member 10 is retracted from the mating member, the engagement state between the two is canceled, and the unlocked state can be formed.
Here, as soon as the lock member 10 is fully retracted, the cam plate 332 contacts the contact piece 181 of the contact switch 18 (the state shown in FIG. 4). As a result, the contact switch 18 cuts the electrical path to the electric motor 11 and the electric motor 11 stops.

  Next, a method for forcibly unlocking the electric lock unit 1 in the locked state will be described. In the electric lock unit 1 of this example, the coil spring 15 is interposed between the lock member 10 and the rotation shaft 330 of the third gear 33. Therefore, if an external force is applied to the lock member 10, the lock member 10 can be retracted against the elastic force of the coil spring 15. For example, an office locker equipped with the electric lock unit 1 may be provided with a maintenance plate for accessing the lock member 10 from the outside. In this case, by removing the maintenance plate that is bolted or the like, it is possible to access the lock member 10 and forcibly unlock it. Here, as the bolt for fixing the maintenance plate, it is preferable to employ a bolt that can be removed only by a special tool such as a torque wrench, or a bolt that can be removed only by a dedicated tool. In this case, compulsory unlocking work ease and crime prevention can be achieved at a high level.

As described above, the electric lock unit 1 of the present example enables forced unlocking by providing the coil spring 15 between the lock member 10 and the electric motor 11. The electric lock unit 1 of this example has various uses belonging to a wide range, such as office furniture, household furniture, a doorway or a window of a building.
The electric lock unit 1 in which the coil spring 15 is disposed outside the unit housing 2 as shown in FIGS. 5 to 8 can be realized while maintaining the basic structure of the electric lock unit 1 of this example. In this way, when the coil spring 15 is arranged outside, there is an advantage that it can be operated in a narrow space.

(Example 2)
In this example, the forced unlocking method is changed based on the electric lock unit of the first embodiment. This will be described with reference to FIG.
The electric lock unit 1 of this example applies a biasing force in a predetermined rotational direction to the third gear 33 so that the gear engagement state from the electric motor 11 to the third gear 33 can be interrupted. It is composed. In the electric lock unit 1, when the third gear 33 is disconnected from the electric motor 11, the third gear 33 is rotated so that the lock member 10 moves backward (unlocked side).

  First, a mechanism for cutting the gear engagement state from the electric motor 11 to the third gear 33 will be described. The electric lock unit 1 of this example includes a rotation shaft 320 of the second gear 32 that protrudes outward through the cover 21 and an advance / retreat plate 40 for pushing the rotation shaft 320. The electric lock unit 1 is configured such that the gear engagement state from the electric motor 11 to the third gear 33 can be disconnected by pushing the rotating shaft 320.

  Specifically, in this example, the vertical direction of the first gear 31 and the second gear 32 is reversed based on the electric lock unit 1 of the first embodiment. That is, in the first gear 31, the worm wheel portion 31a is located on the upper side (cover 21 side) in the figure, and the small-diameter spur gear portion 31b is located on the lower side (case 22 side) in the figure. . In the second gear 32, a small-diameter spur gear 32a that engages with the third gear 33 is positioned on the upper side in the figure, and a large-diameter spur gear 31b that engages with the first gear 31 is shown in the figure. Located in the middle and lower side. In the gear engagement structure between the first gear 31 and the second gear 32 as described above, the gear engagement between the two can be canceled by pushing the second gear 32 down to the case side 21. And the electric lock unit 1 of this example can cut | disconnect the gear engagement state from the electric motor 11 to the 3rd gear 33 by canceling the gear engagement between the 1st gear 31 and the 2nd gear 32. It is comprised as follows.

  In the electric lock unit 1 of this example, a spring 44 is disposed between the second gear 32 and the case 22. The spring 44 biases the second gear 32 toward the upper side (the cover 21 side) in the figure by the biasing force. Therefore, in the electric lock unit 1, when the pushing force is not applied to the rotating shaft 320, the second gear 32 can be pushed up by the biasing force of the spring 44, and the gear engagement between the first gear 31 and the second gear is maintained. Can do.

  The advance / retreat plate 40 includes a substantially flat sliding plate portion 42 and a substantially flat pressing plate portion 41 extending so as to form a predetermined angle with the sliding plate portion 42. The advance / retreat plate 40 is a portion that is held by a holder portion 43 provided on the outer surface of the cover 21 and slides along the outer surface of the cover 21. The pressing plate portion 41 is formed so that the distance from the cover 21 gradually increases toward the tip on the side opposite to the sliding plate portion 42. That is, according to the advance / retreat plate 40, the rotary shaft 320 can be pushed in by the pressing plate portion 41 at the advance position. On the other hand, the advancing / retreating plate 40 positioned at the retracted position does not exert a pushing force on the rotating shaft 320.

  Further, in the electric lock unit 1 of this example, the urging force of the coil spring 15 acts on the third gear 33. This urging force is intended to rotate the third gear 33 in the rotational direction in which the lock member 10 is retracted. That is, the third gear 33 is rotated by the urging force of the coil spring 15 in a rotatable state. In the electric lock unit 1, the lock member 10 moves backward in accordance with the rotation of the third gear 33.

  In the electric lock unit 1 configured as described above, when the pushing force does not act on the rotating shaft 320, the second gear 32 can be pushed up by the urging force of the spring 44 as described above. The gear engagement with the gear 32 can be maintained. On the other hand, when the pushing force is applied to the rotating shaft 320, the second gear 32 can be pushed down toward the case 22, and the gear engagement between the first gear 31 and the second gear 32 can be canceled. And the gear engagement state from the electric motor 11 to the 3rd gear 33 can be cut | disconnected by canceling gear engagement in this way.

The third gear 33 separated from the electric motor 11 and made rotatable is rotated by the urging force of the coil spring 15 as described above. The biasing force that acts on the third gear 33 from the coil spring 15 is a force that acts in the rotational direction that causes the lock member 10 to retreat as described above. Therefore, if the gear engagement between the first gear 31 and the second gear 32 is cancelled, the lock member 10 can be moved backward to achieve forced unlocking.
Other configurations and operational effects are the same as those in the first embodiment.

(Example 3)
This example is an example relating to an office locker 6 equipped with the electric lock unit 1 of the first embodiment. The contents will be described with reference to FIG.
The locker 6 of this example includes a lockable opening / closing door 61.
The locker includes an electric lock unit 1 having substantially the same specifications as the first embodiment, an engagement member 55 that engages with the lock member 10 of the electric lock unit 1, and a lock mechanism configured to drive the engagement member 55. And a sub-block unit 5.
The electric lock unit 10 is configured so that the opening and closing of the open / close door 61 can be prohibited by moving the lock member 10 forward.
The sub-block unit 5 is configured to drive the engagement member 55 so as to retract the lock member 10 against the elastic force of the coil spring 15 (see FIGS. 1 to 3) of the electric lock unit 1. It is.
This content will be described in detail below.

The locker 6 of this example is configured to set the locked state by inserting the lock member 10 on the open / close door 61 side into the catcher portion 620 of the frame body 62.
The electric lock unit 1 of this example has the same specifications as those of the first embodiment except that the end of the lock member 10 is extended and a pin 108 is provided in the extended part.
The engaging member 55 has a rod-like shape having a substantially circular cross section in which an engaging groove 550 that engages with the pin 108 extends in the axial direction.

The sub-block unit 5 of this example includes a cylinder 52 provided with a key hole 520 into which a key (not shown) is inserted, and a dead cam 51 that can rotate while the key is inserted. The dead cam 51 has an engaging portion 510 that engages with the engaging member 55 to advance and retract the engaging member 55.
The sub-block unit 5 may be an electronic type configured to input a personal identification number, an electronic type using biometric authentication such as fingerprint authentication, etc., instead of the mechanical type of this example. It can also be adopted.

The locking and unlocking of the locker 6 of this example configured as described above will be described.
When the dead cam 51 is positioned as shown in FIG. 10, the lock member 10 can freely advance and retreat as the pin 108 advances and retreats in the engagement groove 550 of the engagement member 55. That is, the electric lock unit 1 can be freely locked or unlocked. On the other hand, in the locked state by the electric lock unit 1, the lock can be forcibly opened as follows by inserting a key into the key hole 520 of the cylinder 5 and turning the dead cam 51.

  When the dead cam 51 is rotated to the right (in the direction of the arrow in the figure), the engaging portion 510 is displaced in the right direction in the figure, and accordingly, the engaging member 55 can be stroked in the right direction. Here, in the locked state by the electric lock unit 1, as shown in FIG. 10, the pin 108 of the lock member 10 is located at the left end of the engagement groove 550 of the engagement member 55. Therefore, when the engagement member 55 is stroked in the right direction, a force that causes the lock member 10 to stroke in the left direction is generated due to the contact between the pin 108 and the inner peripheral end surface of the engagement groove 550.

In the electric lock unit 1 of this example, a coil spring 15 is interposed between the lock member 10 and the third gear 33 (see FIG. 2), as in the first embodiment. Therefore, if the dead cam 51 is rotated as described above, the lock member 10 can be stroked to the left while being accompanied by elastic deformation of the coil spring 15. Thus, the lock member 10 can be forcibly unlocked by pulling it out of the catcher portion 620 of the frame body 62.
Other configurations and operational effects are the same as those in the first embodiment.

Example 4
This example is an example related to the electric lock system 7 applied to a system locker in which a plurality of lockers of the second embodiment are combined. The contents will be described with reference to FIG.
The electric lock system 7 of this example has a plurality of electric lock units 1 and a centralized control device 71 as a control means for controlling each electric lock unit 1. In the electric lock system 7, the central control device 71 and the electric lock unit 1 are connected via a communication network 70 in a communicable state.

  In the electric lock system 7 of the present example, for example, simultaneous morning unlocking time and evening evening locking time can be set. In the time zone from the evening locking time to the morning unlocking time (hereinafter, simply referred to as “overtime”), it is possible to ensure high security by prohibiting the use of lockers in principle. On the other hand, in the electric lock system 7 of this example, as described in the second embodiment, the electric lock unit 1 can be individually unlocked by using a key.

Therefore, in the electric lock system 7 of this example, the electric lock unit 1 can be individually unlocked by using a key even if it is out of time. That is, this electric lock system 7 can set the simultaneous locked state outside the time and can unlock each electric lock unit 1 if there is a key. The electric lock system 7 is an excellent system that has both high crime prevention and user convenience.
Other configurations and operational effects are the same as in the second embodiment.

Sectional drawing which shows the structure of the electric lock unit in Example 1. FIG. Sectional drawing which shows the structure of the electric lock unit in Example 1. FIG. The bottom view which shows the electric lock unit in Example 1. FIG. FIG. 3 is a top view showing the electric lock unit according to the first embodiment. Sectional drawing which shows the structure of the other electric lock unit in Example 1. FIG. Sectional drawing which shows the structure of the other electric lock unit in Example 1. FIG. The bottom view which shows the other electric lock unit in Example 1. FIG. The top view which shows the other electric lock unit in Example 1. FIG. Sectional drawing which shows the structure of the electric lock unit in Example 2. FIG. Sectional drawing which shows the lock structure of the locker in Example 3 (The figure which looked at the electric lock unit etc. from the inner side). The block diagram which shows the structure of the electric lock system in Example 4. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric lock unit 10 Lock member 11 Electric motor 15 Coil spring 2 Unit housing 21 Cover 22 Case 3 Gear mechanism 31 1st gear 32 2nd gear 33 Rotating member (3rd gear)
330 axis of rotation

Claims (5)

An electric lock unit comprising a lock member that advances and retreats with respect to the outside, and is configured to switch between unlocking and locking by protruding or retracting the lock member,
A rotating member configured to rotate about a rotation axis;
A coil spring having one end fixed to the rotating member and the other end fixed to the locking member, and wound around the outer periphery of the rotating shaft;
An electric motor that rotationally drives the rotating member;
The electric lock unit, wherein the lock member is configured to advance and retreat in a direction substantially perpendicular to the rotation shaft.   2. The electric lock unit according to claim 1, wherein the electric motor and the rotating member are connected via a gear mechanism that decelerates and transmits the rotational motion from the electric motor toward the rotating member. . In Claim 1 or 2, the contact switch provided with the contact piece for turning on and off an electrical contact has two pairs on the outer peripheral side of the rotating shaft,
A substantially disk-shaped member provided with a convex portion in contact with the contact piece at one place in the circumferential direction, and has a cam plate that rotates together with the rotating member, corresponding to each of the contact switches. An electric lock unit characterized by that. A locker with an open / close door,
The electric lock unit according to claims 1 to 3,
An engaging member that engages with a lock member of the electric lock unit;
A sub-lock unit that is a lock mechanism configured to drive the engagement member,
The electric lock unit is configured to prohibit the opening and closing of the open / close door by advancing the lock member outward.
The sub-block unit is configured to drive the engagement member so as to retract the lock member against the elastic force of the coil spring of the electric lock unit. An electric lock system including a plurality of lock mechanisms of two or more,
While having the electric lock unit according to any one of claims 1 to 3 as the lock mechanism,
An electric lock system comprising control means for controlling the electric lock units.

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