JP2004107902A - Locking/unlocking device for cabinet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking/unlocking device for a cabinet, which can be manually reset to a locking location or an unlocking location even if an output shaft of an electric actuator is stopped at an arbitrary location other than the locking or unlocking location due to an electric trouble. <P>SOLUTION: According to the locking/unlocking device, the electric actuator is rigidly housed in a housing 10 which is rotated together with a rotation shaft of a cylinder lock 8 in one body, and an output shaft 17 of the electric actuator is driven by rotation of the housing 10. Therefore even if the output shaft 17 is stopped at any location due to an electric trouble, the output shaft 17 can be easily reset to the normal locking or unlocking location by rotating the cylinder lock 8 a half turn in one direction and a subsequent half turn in an inverted direction by operating a key. In this manner, the electric actuator 12 after recovering to a normal condition can be easily controlled. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cabinet locking / unlocking device in which an output shaft is driven in one direction by an electric signal to an electric actuator connected to a cylinder lock which is rotated by a key operation to perform locking / unlocking every half rotation.
[0002]
[Prior art]
The present applicant has developed a cabinet locking / unlocking device having an electric actuator connected to a cylinder lock which is rotated by a key operation as shown in FIG. 7, and has already applied for a patent as Japanese Patent Application No. 2001-289440.
[0003]
FIG. 7 is a sectional view of such a locking / unlocking device. The locking / unlocking device 01 includes a cylinder lock 02 and an electric actuator 03 connected to the cylinder lock 02. On the rear end side of the cylinder lock 02, a rotation shaft 04 interlocking with the rotation operation of the insertion key protrudes, and is provided in a cylindrical housing 05 which is a housing member fixed to the rotation shaft 04. , An electric actuator 03 having a motor with a reduction gear is accommodated and fixed by a plurality of screws 07 via a holder 06.
[0004]
One end of an electric cable 08 for driving is connected to the electric actuator 03 through a round hole 05a formed in the housing member 05. An eccentric body 09 including a rotating plate 09a and an eccentric shaft 09b is fixed to the output shaft 010 on the rear end side in the storage member 05.
[0005]
For example, the electric actuator 03 is rotated via an electric cable 08 by a remote operation using a remote controller or the like, and the output shaft 010 is rotated half a counterclockwise when viewed from the front side of the key, for example, so that the operation plate 011 is rotated. The vehicle is guided to the left and right by the guide support portion constituted by the rear plate 012 and the front plate 013, and the locking or unlocking operation is performed. The drive control of the electric actuator 03 is performed when the limit switch is turned on and off in accordance with the rotation of the output shaft 010, and the operating plate 011 periodically moves left and right every half rotation.
[0006]
When an electric trouble occurs due to a power failure or a failure of a limit switch or the like and locking and unlocking are not performed, if the eccentric shaft 09b is in the locking or unlocking position, insert the key into the cylinder lock 02, If the storage member 05 can be rotated halfway by forcible manual rotation, the operating plate 011 can be moved by the output shaft 010 to obtain an unlocked or locked state.
[0007]
[Problems to be solved by the invention]
However, the locking / unlocking device 01 described above only needs to have the eccentric shaft 09b at the locking or unlocking position when the electrical trouble occurs and the locking and unlocking is not performed. In this case, when the electric trouble is solved and the control by the normal electric actuator is to be performed, it is not reset to the initial position, and the normal locking and unlocking operation is difficult.
[0008]
The present invention has been made in view of such circumstances, and an object of the present invention is to manually reset an electric actuator even if the output shaft of the electric actuator stops at an arbitrary position other than the locking / unlocking position. An object of the present invention is to provide a cabinet locking / unlocking device which can be reset to a locking or unlocking position by an operation.
[0009]
[Means for Solving the Problems]
In order to solve the above problem, a cabinet locking and unlocking device according to the present invention drives an output shaft in one direction by an electric signal to an electric actuator connected to a cylinder lock which is rotated by a key operation, and unlocks the cabinet every half rotation. A cabinet locking / unlocking device for performing locking, wherein the electric actuator is housed and fixed in a housing member that rotates integrally with a rotation shaft of the cylinder lock, and the rotation of the housing member causes the electric actuator to rotate. The output shaft can be driven, and regardless of the position where the output shaft is stopped, the output shaft is locked or unlocked at the normal position in the reverse half rotation following the one half rotation in the one direction in the cylinder lock. It is characterized by being reset to.
According to this feature, even if an electrical trouble occurs, the locked position or the unlocked position can be easily reset to the normal position by the key operation, and the electric actuator after normal return can be easily controlled.
[0010]
In the cabinet unlocking device according to the present invention, the output shaft has a lock-side stopper that extends in a diametrical direction and rotates together with the lock-side stopper. It is preferable to provide a fixed-side stopper that prevents rotation of the lock-side stopper by abutting one of the two claws at the end of the lock-side stopper.
With this configuration, the locked position or the unlocked position can be mechanically and accurately reset to the proper position by the key operation.
[0011]
In the cabinet locking and unlocking device of the present invention, the fixed-side stopper is located between a position where the fixed-side stopper can be brought into contact with the claw portion and a retracted position where the one-sided rotation of the lock-side stopper allows the rotation. It is preferable that an operating body that moves in response to the claw portion be provided.
According to this configuration, by using the operating body that moves in accordance with the rotation direction of the output shaft, a reliable reset operation can be performed with a simple mechanism.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
1 to 5 show an embodiment of the present invention. FIG. 1A is a front view showing a key insertion portion of an electronic lock, FIG. 1B is a side view of the electronic lock, and FIG. ) Is a partially cutaway plan view showing the electric actuator of the electronic lock, (b) is a rear view showing the eccentric pin of the electronic lock, and FIG. 3 is a plan view showing a state where the electric actuator portion of the electronic lock is attached to the bracket. FIG. 4 is a perspective view of the electronic lock similarly attached to the bracket viewed from the eccentric pin side. FIG. 5A shows a state in which the lock-side stopper is reset to the unlocked position, and FIG. It is explanatory drawing which shows the state in which the side stopper was reset to the locking position.
[0014]
1 and 2, reference numeral 1 denotes an electronic lock as a locking / unlocking device for a cabinet or the like. The electronic lock 1 is an existing lock that can be unlocked by being rotated halfway forward and backward by manual operation. And an electric actuator 12 which is connected to the rear end of the cylinder lock 8 and performs locking and unlocking by an electric operation.
[0015]
On the rear end side of the cylinder lock 8, a turning shaft 14 that is interlocked with the turning operation of the insertion key protrudes. The front end of the cylindrical housing 10, which is a housing member, is not shown on the turning shaft 14. An electric actuator 12 having a motor with a speed reducer is fixed in the housing 10 through a fitting hole, and is accommodated and fixed by a pair of upper and lower mounting screws 9 via a cap-shaped holder 13.
[0016]
A circumferentially long hole 10a is formed on a front end side surface of the housing 10, and a pair of electric cables 18a introduced from the circumferentially long hole 10a are formed at a front end of the electric actuator 12 housed and fixed in the housing 10. , 18b are connected to one end.
[0017]
An eccentric body 20 composed of a rotating plate 15 and an eccentric shaft 16 is fixed to an output shaft 17 of the electric actuator 12 at a rear end in the housing 10.
[0018]
On the other hand, as shown in FIGS. 3 and 4, the electronic lock 1 has a rear end face of the cylinder lock 8 and a front end face of the cylindrical housing 10 opposed to each other in the axial direction with the vertical holding plate 24a interposed therebetween. Is disposed between the pair of holding plates 22a and 22b on the upper surface of the bracket 24.
[0019]
On the front surface of the rotating plate 15, a lock-side stopper 25 having two claw portions 25a and 25b protruding in the diametric direction from its outer periphery is attached to both ends. A fixed-side stopper 26 is provided on the upper surface of the bracket 24 to allow rotation in one direction by contact with the claw portions 25a and 25b, and to restrict rotation in the other direction of the rotation plate 15.
[0020]
The fixed-side stopper 26 is provided with a swinging moving body 27 having a locking claw 27a that abuts and engages with the claw portions 25a and 25b of the lock-side stopper 25, and pivotally supports the back of the swinging moving body 27 so as to be rotatable. And a support shaft 30 fixed to a vertical support plate 28, and the locking claw 27a is rotatably supported by the support shaft 30 so as to be movable only above the locking claw 27a. The claw 27a can rotate up to the horizontal position (contactable position), but further rotation is restricted.
[0021]
Therefore, when the rotating plate 15 is rotated counterclockwise (in the direction of the arrow) as viewed from the front shown in FIG. 4 by the rotating operation of the cylinder lock 8 or the electric actuator 12, the rotating plate is freely rotated in that direction. However, when it rotates clockwise, one of the claws 25a and 25b is locked by the locking claw 27a and stopped. The eccentric shaft 16 is positioned at the locked position or the unlocked position by these stop positions.
[0022]
Next, the operation of locking and unlocking the electronic lock will be described with reference to FIGS. 3, 4, and 5 (a) and 5 (b).
[0023]
First, when operating the electronic lock 1, as shown in FIG. 3, a state in which the cylinder lock 8 is manually locked and the manual key K is removed from the key insertion portion 8a is set as an initial position of the locking device.
[0024]
That is, the initial position means that the claw member 25 is rotated clockwise together with the cylinder lock 8 as shown in FIG. 5A, and one of the locking claws 25b (hatched portion in the figure) is fixed to the fixed stopper 26. 5 shows a state in which the eccentric shaft 16 is at the rising end in contact with the upper surface of the locking claw 27a.
[0025]
Therefore, when this state is electrically set as the unlocked state of the electronic lock 1 and the locking operation is performed by remote control with a remote controller or the like from this state, as shown in FIG. When the actuator is actuated and the eccentric body 20 rotates half a turn counterclockwise, and the other claw portion 25a contacts the lower surface of the locking claw 27a of the fixed-side stopper 26, the eccentric shaft 16 moves to the lower end. The locking operation is performed by moving an operating plate (not shown) engaged with the eccentric shaft 16 via a long hole to one side in the linear direction. At this time, the drive of the electric actuator is stopped by detecting the half-rotation movement electrically by a detection device such as a limit switch.
[0026]
Next, when the unlocking operation is performed by the remote controller, the eccentric body 20 further rotates half a turn counterclockwise to reach the unlocking position shown in FIG. 5A, and the drive of the electric actuator is stopped again by the limit switch. At this time, the claw portion 25b kicks up the locking claw 27a of the fixed-side stopper 26 and rotates clockwise with the swinging motion pin 27 as a fulcrum, but the claw portion 25b eventually separates from the locking claw 27a. (Retreat position), the swinging motion pin 27 returns to the horizontal position (contactable position) again by gravity.
[0027]
Here, an operation in a case where an electric trouble occurs in the electronic lock 1 and locking and unlocking is not performed will be described.
[0028]
For example, in the case where the electric actuator does not operate in spite of a command from a remote control or the like, as shown in FIG. When it is located above the horizontal axis crossing the output shaft 17, it can be reset to the locked position by operating as follows.
[0029]
First, when the manual key K is inserted into the key insertion portion 8a of the cylinder lock 8 and the manual key K is rotated half a turn counterclockwise, the lock stopper 25 is rotated half a counterclockwise through the housing 10. At this time, the claw portion 25a pushes up and passes the locking claw 27a of the fixed-side stopper 26.
[0030]
Next, when the manual key K is rotated half a clockwise direction, the lock-side stopper 25 attempts to rotate half a clockwise direction through the housing 10, but the claw 25a comes into contact with the upper surface of the locking claw 27a, and the locking stopper 27a is further rotated. Since the rotation is restricted, the manual key K slides with respect to the rotation shaft 14 and returns to the half rotation position. However, as shown in FIG. 5B, the eccentric shaft 16 is positioned at the lower end (locking position). You.
[0031]
On the other hand, when the position of the eccentric shaft is below the horizontal axis crossing the output shaft 17 of the electric actuator 12, the unlocking position can be reset by operating as follows.
[0032]
In this case, similarly, when the manual key K is rotated half a counterclockwise, the lock-side stopper 25 rotates half a counterclockwise through the housing 10. At this time, the claw portion 25b pushes up and passes the locking claw 27a of the fixed stopper 26.
[0033]
Next, when the manual key K is rotated half a clockwise direction, the lock-side stopper 25 attempts to rotate half a clockwise direction through the housing 10, but the claw 25b abuts on the upper surface of the locking claw 27a. Since the rotation is restricted, the manual key K slides with respect to the rotation shaft 14 and returns to the half rotation position, but the eccentric shaft 16 is positioned at the upper end (unlocked position) as shown in FIG. Is done.
[0034]
Therefore, according to the locking / unlocking device configured as described above, the electric actuator 12 is accommodated and fixed in the housing 10 that rotates integrally with the rotation shaft 14 of the cylinder lock 8, and the electric actuator 12 is electrically driven by the rotation of the housing 10. The eccentric shaft 16 of the actuator 12 is configured to be drivable. Even if the eccentric shaft 16 is stopped at any position due to an electrical trouble, the key operation causes the cylinder lock 8 to rotate in one direction and then in a reverse half rotation. Accordingly, the eccentric shaft 16 can be easily reset to the normal position of the locking position or the unlocking position, and the control of the electric actuator 12 after normal return can be easily performed.
[0035]
The turning plate 15 provided with the eccentric shaft 16 has a lock-side stopper 25 extending in the diametrical direction. The lock-side stopper 25 is allowed to rotate in one direction but not in the other direction. Is provided with a fixed-side stopper 26 for preventing the rotation of the lock-side stopper 25 by contact with one of the two claws 25a, 25b at the end thereof. The position can be mechanically and accurately reset to the correct position.
[0036]
Further, the fixed-side stopper 26 is provided at a position where it can come into contact with the locking claw 27a, and when the one of the claw portions 25a and 25b rotates counterclockwise, it comes into contact with these claw portions 25a and 25b. Since the stop claw 27a is provided with an operating body that is pushed up about the support shaft 30 and moves between a retracted position allowing passage of one of the claw portions 25a and 25b, a simple mechanism is provided. Thus, a reliable reset operation can be performed.
[0037]
Next, a modified example of the fixed-side stopper will be described below with reference to FIG. The same components as those described above are denoted by the same reference numerals, and redundant description will be omitted.
[0038]
Reference numeral 3 denotes an electronic lock provided with a fixed-side stopper 36 which is a modified example of the fixed-side stopper, and the electronic lock 3 is operated to rotate the cylinder lock 8 or the electric actuator 12 similarly to the above embodiment. When the rotating plate 15 rotates counterclockwise when viewed from the front in the drawing, the rotating plate 15 freely rotates in that direction, but when the rotating plate 15 rotates clockwise, any one of the claw portions 25a and 25b is used. The eccentric shaft 16 is stopped by being locked by the locking claw 32a of the fixed-side stopper 36, and the eccentric shaft 16 can be positioned at the locking position or the unlocking position by these stopping positions.
[0039]
More specifically, the fixed-side stopper 36 includes a sliding operation body 32 having a locking claw 32a and protruding in the horizontal direction, and a bracket for supporting the sliding operation body 32 so as to be slidable in the left-right direction while restraining both side surfaces thereof. 34, a pair of support shafts B1 and B2 which are spaced apart from each other at two positions on the left and right of the bracket 34 to insert and hold a guide elongated hole 32b extending in the left and right direction formed in the sliding operation body 32, and project from the side surface of the bracket 34. And a tension spring 35 extended between locking pins P2 provided on the right side surface of the sliding body 32.
[0040]
The sliding operation body 32 is guided within a guide slot 32b formed slightly longer than the interval between the pair of locking pins P1 and P2, and the locking claw 32a is always protruded toward the claw portions 25a and 25b by a tension spring 35. You are being biased to.
[0041]
Therefore, when the rotation plate 15 is rotated counterclockwise (in the direction of the arrow) as viewed from the front shown in FIG. 6 by the rotation operation of the cylinder lock 8 or the electric actuator 12, the claw portions 15a or 25b are locked. Although it comes into contact with the pawl 32a, the contact surface of the locking pawl 32a is formed in a tapered shape, so that the sliding operation body 32 retreats rightward as shown by a two-dot chain line and passes through the pawl portion 15a or 25b. Tolerate.
[0042]
Conversely, when the rotating plate 15 is rotated clockwise (in the direction of the arrow), the claw portion 15a or 25b abuts on the flat upper surface of the locking claw 32a, so that the sliding operation body 32 retreats rightward. No further rotation of the lock-side stopper 25 is prevented. Then, the eccentric shaft 16 can be positioned at the locking position or the unlocking position by locking one of the claw portions 25a and 25b to the locking claw 32a.
[0043]
【The invention's effect】
The present invention has the following effects.
[0044]
(A) According to the first aspect of the present invention, even if an electrical trouble occurs, it is possible to easily reset the locked position or the unlocked position to the normal position by operating the key, and the electric actuator after normal return Can be easily controlled.
[0045]
(B) According to the second aspect of the invention, it is possible to mechanically and accurately reset the lock position or the unlock position to the proper position by operating the key.
[0046]
(C) According to the third aspect of the invention, by using the operating body that moves in accordance with the rotation direction of the output shaft, a reliable reset operation can be performed with a simple mechanism.
[Brief description of the drawings]
1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a front view showing a key insertion portion of an electronic lock, and FIG. 1B is a side view of the electronic lock.
2A is a partially cutaway plan view showing an electric actuator of an electronic lock, and FIG. 2B is a rear view showing an eccentric pin of the electronic lock.
FIG. 3 is a plan view showing a state where the electric actuator unit of the electronic lock is attached to a bracket.
FIG. 4 is a perspective view of the electronic lock similarly attached to the bracket as viewed from the eccentric pin side.
5A is a diagram illustrating a state in which a lock-side stopper is reset to an unlocking position, and FIG. 5B is an explanatory diagram illustrating a state in which the lock-side stopper is reset to a locking position.
FIG. 6 is an explanatory view showing a modification of the fixed-side stopper.
FIG. 7 is a partially cutaway plan view of a conventional electronic lock showing an electric actuator.
[Explanation of symbols]
1,3 electronic lock (locking / unlocking device)
8 Cylinder lock 8a Key insertion part 9 Mounting screw 10 Housing (storage member)
10a Circumferential slot 12 Electric actuator 13 Holder 14 Rotating shaft 15 Rotating plate 16 Eccentric shaft 17 Output shaft 18a, 18b Electric cable 20 Eccentric body 22a, 22b Holding plate 24 Bracket 24a Vertical holding plate 25 Lock side stopper 25a, 25b Claw 26 Fixed-side stopper 27 Swinging moving body (operating body)
27a Locking claw 28 Vertical support plate 30 Support shaft 32 Sliding operating body (operating body)
32a Locking claw 32b Guide elongated hole 34 Bracket 35 Tension spring 36 Fixed side stopper B1, B2 Support shaft K Manual key P1, P2 Locking pin

Claims (3)

A cabinet locking / unlocking device configured to drive an output shaft in one direction by an electric signal to an electric actuator connected to a cylinder lock that is rotated by a key operation to perform locking / unlocking every half rotation,
The electric actuator is housed and fixed in a housing member that rotates integrally with the rotation shaft of the cylinder lock, and the output shaft of the electric actuator can be driven by the rotation of the storage member. A locking / unlocking device for a cabinet, wherein the output shaft is reset to a normal position of a locking position or an unlocking position by a half-turn in a reverse direction following the half-turn in one direction of the cylinder lock even when stopped. The output shaft has a lock-side stopper extending in the diametrical direction that rotates together, and allows the lock-side stopper to rotate in the one direction, but does not allow the lock-side stopper to rotate in the other direction. 2. The cabinet locking / unlocking device according to claim 1, further comprising a fixed stopper for preventing the rotation of the cabinet when one of the two claw portions abuts. The fixed-side stopper moves in response to the claw portion between a position where the fixed-side stopper can come into contact with the claw portion and a retracted position that allows the lock-side stopper to rotate in one direction. 3. The cabinet locking and unlocking device according to claim 2, further comprising an operating body.

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