JP4173982B2 - Cabinet locking and unlocking device - Google Patents

Description

[0001]
BACKGROUND 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 that is rotated by a key operation to perform locking / unlocking every half rotation.
[0002]
[Prior art]
As shown in FIG. 7, the present applicant has developed a cabinet locking / unlocking device including an electric actuator connected to a cylinder lock rotated by a key operation, and has already filed a patent application as Japanese Patent Application No. 2001-289440.
[0003]
FIG. 7 is a cross-sectional view of such a locking / unlocking device, and 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 that projects in conjunction with the rotation operation of the insertion key protrudes, and a cylindrical housing 05 that is an accommodation member fixed to the rotation shaft 04 is provided. The electric actuator 03 having a motor with a reduction gear is housed 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 05 a formed in the storage member 05. An eccentric body 09 comprising 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, by rotating the electric actuator 03 via the electric cable 08 by remote control with a remote controller or the like, and rotating the output shaft 010 counterclockwise, for example, when viewed from the front side of the key, the operation plate 011 is moved. It is guided to the left by the guide support part 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 by turning on and off the limit switch accompanying the rotation of the output shaft 010, and the operation plate 011 periodically moves to the left and right every half rotation.
[0006]
When an electrical trouble occurs due to a power failure or a failure of the limit switch, etc., and the unlocking is not performed, if the eccentric shaft 09b is just in the locked or unlocked position, the key is inserted into the cylinder lock 02, If the housing member 05 can be rotated halfway by being forced to rotate manually, the operation 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, in the above-described locking / unlocking device 01, it is only necessary that the eccentric shaft 09b is in the locking or unlocking position when an electrical trouble occurs and the locking / unlocking state is not performed. In the case of stopping at, when the electric trouble is solved and the control by the normal electric actuator is attempted, it is not reset to the initial position, and the normal locking / unlocking operation is difficult.
[0008]
The present invention has been made in view of such circumstances, and the purpose of the present invention is to provide a manual even if an electrical trouble occurs and the output shaft of the electric actuator stops at any position other than the unlocking position. An object of the present invention is to provide a cabinet locking / unlocking device that can be reset to a locked or unlocked position by an operation.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the cabinet locking / unlocking device of the present invention is configured to drive and release the output shaft in one direction by an electric signal to the electric actuator connected to the cylinder lock rotated by key operation every half rotation. A cabinet locking / unlocking device configured to perform locking, wherein the electric actuator is housed and fixed in a housing member that rotates integrally with a rotating shaft of the cylinder lock, and the housing member rotates to rotate the electric actuator. The output shaft can be driven, and even if the output shaft is stopped at any position, the output shaft is rotated in the reverse direction after half-rotating in the same direction as the direction in which the actuator of the cylinder lock is driven. Is reset to the normal position of the locking position or the unlocking position.
According to this feature, even if an electrical trouble occurs, it can be easily reset to the normal position of the locked position or the unlocked position by a key operation, and the electric actuator can be easily controlled after returning to normal.
[0010]
In the locking and unlocking device for a cabinet according to the present invention, the output shaft has a lock-side stopper extending in the diametrical direction that rotates together, and allows the one-way rotation of the lock-side stopper, but rotates in the other direction. In contrast, it is preferable that a fixed-side stopper is provided to prevent the rotation of the two claw portions at the end of the lock-side stopper by abutment thereof.
If it does in this way, it can reset mechanically correctly to the normal position of a locking position or an unlocking position by key operation.
[0011]
In the cabinet locking / unlocking device according to the present invention, the fixed-side stopper is between a position at which the fixed-side stopper can come into contact with the claw portion and a retracted position that allows the rotation of the locking-side stopper with respect to the one-way rotation. It is preferable that an actuating body that moves in response to the claw portion is provided.
If it does in this way, a reliable reset action can be performed with a simple mechanism by using the operation body which moves according to the rotation direction of the output shaft.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below 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 plan view with a part broken away 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 part of the electronic lock is attached to the bracket. 4 and 4 are perspective views of the electronic lock attached to the bracket as viewed from the eccentric pin side, FIG. 5A shows a state where the lock stopper is reset to the unlocked position, and FIG. 5B shows the lock. It is explanatory drawing which shows the state by 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 such as a cabinet. The electronic lock 1 can be locked / unlocked by rotating it halfway forward and backward by manual operation. The cylinder lock 8 and an electric actuator 12 connected to the rear end of the cylinder lock 8 and performing locking and unlocking by electrical operation.
[0015]
On the rear end side of the cylinder lock 8, a rotation shaft 14 that projects in conjunction with the rotation operation of the insertion key protrudes, and the front end of the cylindrical housing 10 that is a housing member is not shown on the rotation shaft 14. An electric actuator 12 that is fixed through a fitting hole and has a motor with a speed reducer is housed and fixed in the housing 10 by a pair of upper and lower mounting screws 9 through a cap-shaped holder 13.
[0016]
A circumferential long hole 10a is formed in the front end side surface of the housing 10, and a pair of electric cables 18a introduced from the circumferential long hole 10a is provided at the front end of the electric actuator 12 accommodated and fixed in the housing 10. , 18b are connected at one end.
[0017]
In addition, an eccentric body 20 including 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 portion in the housing 10.
[0018]
On the other hand, as shown in FIGS. 3 and 4, the electronic lock 1 faces the cylindrical lock 10 so that the rear end face of the cylinder lock 8 faces the front end face of the cylindrical housing 10 with the vertical holding plate 24 a interposed therebetween. Is disposed between a pair of clamping plates 22a and 22b on the upper surface of the bracket 24.
[0019]
A lock-side stopper 25 having two claw portions 25a and 25b projecting in the diametrical direction from the outer periphery thereof is attached to the front surface of the rotating plate 15, and either one of the side surfaces in the vicinity of the tip of the cylindrical housing 10 is attached. A fixed-side stopper 26 is provided on the upper surface of the bracket 24 to allow the rotation in one direction by contact with the claw portions 25 a and 25 b and to restrict the rotation in the other direction of the rotation plate 15.
[0020]
The fixed-side stopper 26 is pivotally supported so that the swinging operation body 27 having a locking claw 27a that comes into contact with and engages with the claw portions 25a and 25b of the lock-side stopper 25 and the back of the swinging operation body 27 can be rotated. The support shaft 30 is fixed to the vertical support plate 28, and the locking claw 27a is rotatably supported by the support shaft 30 so that only the upward movement thereof is possible. The claw 27a can be rotated to a 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) when viewed from the front shown in FIG. 4 by the rotating operation of the cylinder lock 8 or the electric actuator 12, it can freely rotate in that direction. However, when it rotates clockwise, one of the claw portions 25a and 25b is locked to the locking claw 27a and stopped. The eccentric shaft 16 is positioned at the lock position or the unlock position by these stop positions.
[0022]
Next, it will be described with reference to FIGS. 3, 4, and 5 (a) and (b) in connection with the operation of locking and unlocking the electronic lock.
[0023]
First, when the electronic lock 1 is operated, as shown in FIG. 3, a state where 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 locking claw 25b (hatched portion in the figure) is fixed side stopper 26. This shows a state where the eccentric shaft 16 is in 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 using a remote controller or the like from this state, as shown in FIG. 4, the motor is electrically connected via the electric cables 18a and 18b. When the actuator is actuated and the eccentric body 20 is rotated counterclockwise halfway and the other claw portion 25a comes into contact with the lower surface of the locking claw 27a of the fixed stopper 26, the eccentric shaft 16 moves to the lower end. A locking operation is performed by moving a working plate (not shown) engaged with the eccentric shaft 16 through a long hole to one side in the linear direction. At this time, driving of the electric actuator is stopped by detecting a 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 drive of the electric actuator is again stopped by the limit switch when the eccentric body 20 further rotates counterclockwise and reaches the unlocking position shown in FIG. At this time, the claw portion 25b kicks up the locking claw 27a of the fixed stopper 26 and rotates clockwise with the swing operation pin 27 as the fulcrum 30. However, the claw portion 25b eventually separates from the locking claw 27a. Because of the (retracted position), the swing operation pin 27 returns to the horizontal position (contactable position) again by gravity.
[0027]
Here, an operation when an electric trouble occurs in the electronic lock 1 and locking / 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 by remote operation such as a remote controller, as shown in FIG. 5A, for example, the position of the eccentric shaft is indicated by 16 ′, as shown in FIG. When the output shaft 17 is 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 8 a of the cylinder lock 8 and the manual key K is rotated counterclockwise by half, the lock stopper 25 is rotated counterclockwise by the half through the housing 10. At this time, the claw portion 25a pushes up the locking claw 27a of the fixed side stopper 26 and passes therethrough.
[0030]
Next, when the manual key K is rotated halfway clockwise, the lock stopper 25 attempts to rotate halfway clockwise via the housing 10, but the claw 25a comes into contact with the upper surface of the locking claw 27a, and more 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 as shown in FIG. 5B, the eccentric shaft 16 is positioned at the lower end (locking position). The
[0031]
On the other hand, when the position of the eccentric shaft is below the horizontal axis that crosses the output shaft 17 of the electric actuator 12, it can be reset to the unlocked position by the following operation.
[0032]
In this case, similarly, when the manual key K is rotated counterclockwise by half, the lock-side stopper 25 is rotated counterclockwise by way of the housing 10. At this time, the claw portion 25b pushes up the locking claw 27a of the fixed side stopper 26 and passes therethrough.
[0033]
Next, when the manual key K is rotated halfway clockwise, the lock stopper 25 attempts to rotate halfway clockwise via the housing 10, but the claw 25b contacts the upper surface of the locking claw 27a, and more 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 housed and fixed in the housing 10 that rotates together with the rotating shaft 14 of the cylinder lock 8, and the electric power is generated by the rotation of the housing 10. The eccentric shaft 16 of the actuator 12 can be driven, and even if an electrical trouble occurs and the eccentric shaft 16 stops at any position, a reverse half-turn following the one-way half-turn of the cylinder lock 8 by a key operation. Thus, the eccentric shaft 16 can be easily reset to the normal position of the locking position or the unlocking position, and the electric actuator 12 can be easily controlled after normal return.
[0035]
Further, the rotary plate 15 provided with the eccentric shaft 16 has a lock-side stopper 25 extending in the diametrical direction, and is allowed for one-way rotation of the lock-side stopper 25, but against rotation in the other direction. Is provided with a fixed-side stopper 26 that prevents its rotation by abutting against either one of the two claw portions 25a and 25b at the end of the lock-side stopper 25. It can be mechanically accurately reset to the normal position.
[0036]
Further, the fixed-side stopper 26 is in a position where it can come into contact with the locking claw 27a, and a member that comes into contact with the claw portions 25a and 25b when one of the claw portions 25a and 25b rotates counterclockwise. Since the pawl 27a includes an operating body that is pushed upward about the support shaft 30 and moves between a retracted position that allows passage of one of the pawl portions 25a and 25b, a simple mechanism A reliable reset action can be performed.
[0037]
Next, a modification of the fixed-side stopper will be described below with reference to FIG. In addition, about the same structural member as the structural member mentioned above, the same code | symbol is attached | subjected and the overlapping description is abbreviate | 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. This electronic lock 3 is operated by rotating the cylinder lock 8 or the electric actuator 12 in the same manner as in the above embodiment. Thus, when the rotating plate 15 is rotated counterclockwise when viewed from the front of the figure, any of the claw portions 25a and 25b is freely rotated in that direction, but is rotated clockwise. Is stopped by being locked to the locking claw 32a of the stationary stopper 36, and the eccentric shaft 16 can be positioned at the locking position or the unlocking position by these stopping positions.
[0039]
Specifically, the fixed-side stopper 36 includes a slide actuating body 32 that protrudes in the horizontal direction having a locking claw 32a, and a bracket that is slidably supported in the left-right direction with both side surfaces of the slide actuating body 32 being constrained. 34 and a pair of support shafts B1 and B2 spaced apart at two left and right positions of the bracket 34 so as to insert and hold a guide elongated hole 32b formed in the sliding operation body 32 extending in the left-right direction. The locking pin P1 is provided and a tension spring 35 stretched between the locking pin P2 protruding from the right side surface of the sliding body 32.
[0040]
The sliding operation body 32 is guided in a range of a guide long hole 32b formed slightly longer than the distance between the pair of locking pins P1 and P2, and the locking claw 32a always projects toward the claw portions 25a and 25b by the tension spring 35. It is energized to do.
[0041]
Therefore, when the rotation plate 15 is rotated counterclockwise (arrow direction) when viewed from the front shown in FIG. 6 by the rotation operation of the cylinder lock 8 or the electric actuator 12, the claw portion 15a or 25b is locked. The abutment surface of the locking claw 32a is formed in a taper shape so that the sliding operation body 32 moves backward as indicated by a two-dot chain line, and passes through the claw portion 15a or 25b. Allow.
[0042]
Conversely, when the rotating plate 15 is rotated clockwise (in the direction of the arrow), the claw portion 15a or 25b comes into contact with the flat upper surface of the locking claw 32a, so that the sliding operation body 32 moves backward in the right direction. No further rotation of the lock side stopper 25 is prevented. Then, any of the claw portions 25a and 25b is locked to the locking claw 32a, so that the eccentric shaft 16 can be positioned at the locked position or the unlocked position.
[0043]
【The invention's effect】
The present invention has the following effects.
[0044]
(A) According to the invention of claim 1, even if an electrical trouble occurs, the electric actuator can be easily reset to the normal position of the locked position or the unlocked position by a key operation, and after normal return Can be easily controlled.
[0045]
(B) According to the invention of claim 2, it can be mechanically and accurately reset to the normal position of the locking position or the unlocking position by a key operation.
[0046]
(C) According to the invention of claim 3, by using the operating body that moves in accordance with the rotation direction of the output shaft, a reliable reset action can be performed with a simple mechanism.
[Brief description of the drawings]
1A and 1B show an embodiment of the present invention, in which FIG. 1A is a front view showing a key insertion part of an electronic lock, and FIG. 1B is a side view of the electronic lock.
FIG. 2A is a plan view with a part broken away 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 in which the electric actuator portion of the electronic lock is attached to the bracket.
FIG. 4 is a perspective view of the electronic lock similarly mounted on the bracket as viewed from the eccentric pin side.
5A is a diagram illustrating a state where the lock-side stopper is reset to the unlocked position, and FIG. 5B is an explanatory diagram illustrating a state where the lock-side stopper is reset to the locked position.
FIG. 6 is an explanatory view showing a modified example of the fixed-side stopper.
FIG. 7 is a plan view in which a part of a conventional electronic lock showing an electric actuator is cut away.
[Explanation of symbols]
1, 3 Electronic lock (locking / unlocking device)
8 Cylinder lock 8a Key insertion part 9 Mounting screw 10 Housing (housing member)
10a Circumferentially long hole 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 part 26 Fixed side stopper 27 Oscillating actuator (actuator)
27a Locking claw 28 Vertical support plate 30 Support shaft 32 Sliding actuator (actuator)
32a Locking claw 32b Guide long 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 that drives an output shaft in one direction by an electric signal to an electric actuator connected to a cylinder lock rotated by a key operation, and performs 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 housing member. Even if the actuator is stopped, the output shaft is reset to the normal position of the locked position or the unlocked position by the reverse rotation that follows the half rotation in the same direction as the direction in which the actuator of the cylinder lock is driven. Cabinet locking and unlocking device characterized by. The output shaft has a lock-side stopper that rotates in a diametrical direction that rotates together, and allows the one-side rotation of the lock-side stopper, but allows the lock-side stopper end to rotate in the other direction. The locking / unlocking device for a cabinet according to claim 1, further comprising a fixed-side stopper that prevents rotation of one of the two claw portions by abutment thereof. The fixed-side stopper moves in response to the claw portion between a position where it can come into contact with the claw portion and a retracted position that allows the locking-side stopper to rotate with respect to the one-way rotation. The cabinet locking / unlocking device according to claim 2, further comprising an operating body.

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