JP3526079B2 - Key management box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key management box in which a door is attached to a box body in which a key is stored and stored so that the door can be opened and closed.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 24, in a key management box, a door 120 is attached to one side of an opening edge of a key storage box 110 for storing a key so that the door 120 can be opened and closed. While the locking pin 121 is attached to the side end, a pin insertion notch 111 is formed on the other side of the opening edge of the key storage box 110.
A lock mechanism 130 for locking the door 120 in the closed state by locking the locking pin 121 inserted from the pin insertion notch 111 when the door is closed is provided on the other side outer surface 112 of the door 10. .

As shown in FIG. 25, the lock mechanism 130 is conventionally provided on the other outer surface 11 of the key storage box 110.
A lock member 13 rotatably pivotally attached to the second shaft 131.
2 and a coil spring 133 for biasing the lock member 132 to rotate in the locking direction. The lock member 132 has a convex lock portion 1 at its tip.
34 is provided so as to project upward, and the upper end of the coil spring 133 is attached to the base end portion thereof.
The pin 4 has a pin guide edge surface 134b which is inclined downward from the top portion 134a toward the tip side at an acute angle, and a lock edge surface 134c which is formed vertically downward from the top portion.

In such a key management box 100, when the door 120 is closed, the locking pin 121 has the pin guide edge surface 134 of the lock member 132 of the lock mechanism 130.
A large force is required to get over b and lock at the lock edge surface 134c. This is the pin guide edge 134
This is because b is inclined at an acute angle and the lock member 132 is biased in the lock direction by the coil spring 133.

Therefore, when the pin guide edge surface 134b of the lock member 130 is formed so as to incline at a gentle obtuse angle from the top portion 134a toward the tip side, as shown in FIG. This pin guide edge surface 134
Although it is possible to get over the b and reach the lock edge surface 134c to be locked, when the door 120 moves in the closing direction by an external force or the like, the door 120 is easily locked and the door 1
There was a problem that the operation for opening the 20 had to be performed again.

Further, the lock mechanism 130 is configured to be unlocked by an electric operation by the solenoid 140, and the lock mechanism 130 and the solenoid 140 are covered with a metal cover (not shown). Therefore, the door 120 could not be unlocked from the outside. For this reason, when there is a long-term power outage or when the solenoid is broken, there is a problem that the box stored in the key storage box 100 must be removed and disassembled in order to take out the key.

Further, as shown in FIGS. 27 and 28, the lock member 132 of the lock mechanism 130 is the key storage box 1
Screw 15 penetrating from the back side to the other side wall 112A of 10
0 through the pivotal hole 135, and a nut 155 is screwed into the tip of the screw 150 to tighten the nut 155 while maintaining a clearance for the lock member 130 to rotate, and further to prevent loosening (illustration). Was applied, and the lock member 130 was rotatably supported.

Therefore, there is a problem that the nut 155 is easily loosened and comes off from the screw 150 and falls off, and the lock member 130 comes off from the screw 150 and falls off. Further, as shown in FIGS. 29 and 30, on the outer surface of the other side wall 112A of the key storage box 110,
A micro switch 160 for detecting a locked state is provided, and the micro switch 160 is attached to a through hole 162 provided in the switch body 161 with a mounting screw 170.
And the base plate 1 attached to the other side wall 112A.
The mounting screw 185 is screwed into the screw hole 181 provided in the first hole 80, and then the cover body 190 is attached to the other side wall 11
It was configured to be screwed to 2A.

As described above, since the mounting screws are used for screwing, there is a problem that the mounting and fixing work of the detection switch is troublesome and the number of parts is large.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. When the door is closed, the door can be locked with a light force and reliably. If the door is not closed until the end, it will not lock, and since the lock can be released from the outside with the unlocking operation rod, even if electrical release by the solenoid is impossible,
The key inside the box can be taken out without removing the box, and moreover, the lock member can be rotatably attached without using the nut and the loosening preventive agent,
The number of parts can be reduced, the drying time of the loosening preventive agent is not required, and the adjustment of nut tightening is not required, so the efficiency of assembly work can be improved and it is necessary to rotate the lock member. It is possible to securely secure a wide clearance, and it is possible to have a structure that is strong against shock and vibration, and a micro switch that detects the locked state and a micro switch that detects the presence or absence of a key holder are installed without using screws. It is an object of the present invention to provide a key management box that can be fixed, can improve workability, and can reduce the number of parts.

[0011]

DISCLOSURE OF THE INVENTION The present invention is proposed in order to achieve the above-mentioned object, and the key management box of claim 1 pivotally attaches a door to a box main body forming a key storage part. In the key management box that can be opened and closed by a shaft, the door has a locking pin attached to its open end, and the side wall of the box body holds and holds the locking pin. The pin engaging recess and the operating protrusion are formed, and the lock member is rotatably biased in the unlocking direction by the elastic spring and rotatably held, and the butt step is formed. A lock mechanism is provided that is combined with an operation member that is urged to move up and down so as to be forcibly moved downward by driving a solenoid. This locking mechanism is configured such that when the door is closed and the locking pin of the door is received by the pin engaging recess of the locking member, the locking force of the elastic spring is applied to the locking member.
Is transmitted to the abutting step of the operating member via the actuating projection, and the operating member is once moved downward against the elastic force of the elastic spring, and then returned to the original state. While the state where the butted step portion and the actuating convex portion are butted against each other is held, the operation member is locked while the solenoid is driven, and the operation member resists the elastic force of the elastic spring. After moving downward, the locked state by the butt-holding of the butt step portion and the actuating convex portion is released, and then it returns to the upward direction to hold the unlocked state. Further, the operation member is provided with an unlocking operation rod that is connected to the operation member, extends upward from the side of the box body and protrudes, and moves the operation member downward to unlock the lock mechanism. It has a different structure.

According to a second aspect of the present invention, there is provided a key management box in which a door is attached to a box body having a key storage portion so that the door can be opened and closed by a pivot shaft. An engaging pin is attached to the box body, and a pin engaging concave portion and an operating convex portion for engaging and retaining the engaging pin are formed on the side wall of the box main body, and an elastic spring is provided to unlock in the unlocking direction .
Rotated biased, and rotatably retained locking member, to form a locking portion, it is rotated biased in the locking direction by an elastic spring, rotatable to force rotates in unlocking direction by the drive of the solenoid It is provided with a lock mechanism that is combined with an operation member held by. This locking mechanism is such that when the door is closed and the locking pin of the door is received by the pin engaging recess of the locking member,
Force is added against the elastic force of the elastic spring.
Is transmitted to the engaging portion of the operating member via the operating convex portion.
Then, when the lock member further rotates, the operating convex portion of the lock member releases the butting state with the locking portion of the operating member, engages with the locking portion, and then the operating member is elastically moved. When the solenoid is driven, the operating member moves in the unlocking direction against the elastic force of the elastic spring while returning to the locking direction by the restoring force of the spring and locking by holding the state. Then, the engagement between the operating convex portion and the locking portion of the locking member is released, and the restoring force of the elastic spring of the locking member returns the locking member in the unlocking direction to lock the operating convex portion. It is structured to hold the unlocked state by bringing the parts into a butt state. Further, the operation member is provided with an unlocking operation rod that is connected to the operation member, extends upward from the side of the box body and protrudes, and moves the operation member in the rotation direction to unlock the lock mechanism. It has a different structure.

According to a third aspect of the present invention, there is provided a key management box in which a side wall of the box body is provided with a micro switch having an operating piece in contact with either the lock member or the operating member as an unlocking detection sensor. A metal base plate is attached to the side wall, the lock mechanism is mounted on the side wall, and a projection is formed by deep-drawing a part of the base plate. The micro switch has a structure in which a mounting screw hole formed in the micro switch is fitted, and the lock mechanism and the micro switch mounted on the base plate are covered with a cover plate. The structure is such that a recess corresponding to the main body of the microswitch is formed at a portion attached to the section.

[0014]

[0015]

[0016]

[0017]

According to the key management box of the present invention, when the door is closed and the locking pin of the door is received by the pin engaging recess of the lock member, the operating projection of the lock member is A turning force is transmitted to the butting step portion of the operating member, the operating member is once moved downward against the elastic force of the elastic spring, and then returned to the original state. The locked state is maintained by butt-holding the operating projection.

On the other hand, when the solenoid is driven, the operating member moves downward against the elastic force of the elastic spring to release the locked state by the butting of the butting step portion and the actuating convex portion. After that, it returns to the upper direction and holds the unlocked state. With this, when the door is closed, the door can be locked with a light force, and the door cannot be locked unless the door is completely closed.

According to the key management box of the second aspect, when the door is closed and the locking pin of the door is received by the pin engaging recess of the lock member, the operating protrusion of the lock member is The abutment portion of the operating member is disengaged and engaged, and the operating member is returned in the locking direction by the restoring force of the elastic spring to maintain the locked state. On the other hand, when the solenoid is driven, the operating member moves in the unlocking direction against the elastic force of the elastic spring, releasing the engagement between the operating convex portion and the locking portion of the lock member, The lock member is returned in the unlocking direction by the restoring force of the elastic spring, and the operating convex portion and the locking portion are brought into a butted state to hold the unlocked state.

Thus, when the door is closed, the door can be locked with a light force, and the door cannot be locked unless the door is completely closed. Further claim 1 or
According to the second key management box, the operation member is connected to the operation member, extends upward from the side of the box body and protrudes, and moves the operation member downward or in the rotational direction to unlock the lock mechanism. Since an unlocking operation rod for locking is further provided, even if the solenoid cannot be electrically released, the locking mechanism can be unlocked by moving the unlocking operation rod downward or in the rotation direction. You can open the door.

According to the key management box of the third aspect, the mounting screw hole formed in the micro switch is fitted into the projection formed by deep drawing formed on the metal base plate mounted on the side wall, and the micro switch is mounted. By inserting the micro switch into the recess formed in the cover body that covers the switch, the micro switch is attached and fixed at a predetermined position.

As a result, the microswitch can be mounted and fixed without using mounting screws, and the number of parts can be reduced.

[0023]

[0024]

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a key management box according to the present invention will be described below with reference to the drawings. FIG. 1 shows a key management box 1A of the first embodiment. In this key management box 1A, a door 20 can be opened / closed by a pivot shaft 12 in a box body 10 in which a key storage portion 11 is formed. Is attached to.

A spring 30 for urging the door 20 in the opening direction is wound around the pivot shaft 12. A locking pin 21 is attached to the open end of the door 20,
The side wall 10a of the box body 10 has a cutout 1 for positioning the locking pin 21 on the outer surface of the side wall 10a when the door is closed.
0b is formed.

A metal base plate 30 is attached to the outer surface of the side wall 10a.
A pin engaging recess 41 for engaging and holding the locking pin 21 of the door 20 and an actuating protrusion 42 are formed therein, and an elastic spring 43.
The elastic member mounted on the plunger 56 of the solenoid 55 mounted on the back surface of the box body 10 forms the butt step portion 51 and the lock member 40 that is urged in the unlocking direction by the pivot shaft 44 so as to be rotatable. A lock mechanism 45 is provided that is combined with an operation member 50 that is urged upward by a spring 57 (see FIG. 5) and is held vertically movably so as to be forcibly moved downward by driving a solenoid 55. ing.

A lower end portion of the operating member 50 is connected to the operating member 50. The operating member 50 extends upward from the side of the box body 10 and projects therefrom. The operating member 50 is moved downward to unlock the lock mechanism 45. An unlocking operation rod 60 is provided for the purpose. As shown in FIG. 4, the base plate 30 attached to the side wall 10a of the box body 10 is provided with a micro switch 70 having its operating piece 71 in contact with the upper end portion of the lock member 40 as a locking / unlocking detection sensor. ing.

The box body 10 also includes a key storage section 1
1 is provided with a key holder storage portion (not shown) communicating therewith, and a micro switch 75 (see FIG. 9) for detecting the storage operation of the key holder (not shown) is provided. As shown in FIGS. 6 and 7, a metal base plate 30 attached to the side wall 11 is formed with a projection 32 (see FIG. 8) by deep drawing a part 31 of the base plate 30. A mounting screw hole 72 formed in the micro switch 70 is fitted into the base plate 30, and the lock mechanism 45 mounted on the base plate 30 and the micro switch 70 are covered with a cover plate 80. Board 8
A recess 81 corresponding to the micro switch main body 73 is formed at a position where the micro switch 70 is attached to the main body 73 of the micro switch 70. As shown in FIG. The part 3 that has been drawn
The micro switch 70 is attached and fixed so as to wrap the micro switch main body portion 73 from both sides with the micro switch main body 1.

As shown in FIGS. 10 and 11, the lock member 40 attached to the base plate 30 is the base plate 30.
The pin member 47 having a shaft rod is inserted into the dowel 35 formed in the above, and the dowel 35 is press-fitted and fixed, so that the dowel 35 is rotatably held. The lock member 40 is shown in FIG.
2, as shown in FIG. 13, the shaft 48 is inserted into the dowel 35 formed on the base plate 30, and the protruding holding portion 8 is inserted from above.
It is also possible to cover the cover plate 80 formed with 5 and press-fit and fix the dowel 35 so as to be rotatably held so as to be sandwiched between the base plate 30 and the cover plate 80.

Further, as shown in FIG. 9, a mounting pin 76 protruding vertically is provided on the micro switch 75 for detecting the key chain, a switch mounting groove 10d is formed on the side wall 10a of the box body 10, and the switch is mounted. A pin insertion recess 10e is formed on the upper side of the mounting groove 10d to support the lower portion 76a of the mounting pin 76 on the back surface side of the base plate 30, while the upper portion 76b of the mounting pin 76 is supported.
Is fitted into the pin insertion recess 10e to mount and fix the micro switch 75 on the side wall 10a of the box body 10.

Next, a door lock operation and a door lock release operation of the key management box 1A of the first embodiment having the above configuration will be described. When the door 20 is closed and the lock pin 21 of the door 20 is received by the pin engaging recess 41 of the lock member 40 of the lock mechanism 45, the operating protrusion 42 of the lock member 40 is received.
However, by transmitting the turning force to the butting step 51 of the operating member 50,
The operation member 50 is once moved downward against the elastic force of the elastic spring 57 and then returned to the original state, and in this state, the butted step portion 51 is butted against the actuating convex portion 42 to hold the locked state. (See FIG. 2).

On the other hand, when the solenoid 55 is driven, the operating member 50 moves downward against the elastic force of the elastic spring 57, and the locked state due to the butting of the butting step portion 51 and the actuating convex portion 42 is released. After that, it returns upward and holds the unlocked state (see FIG. 3). With this, when the door 20 is closed, the door 20 can be locked with a light force, and the door 20 will not be locked unless it is completely closed.

In addition, the operating member 50 includes the operating member 5
Further, an unlocking operation rod 60 that is connected to 0, extends upward from the side of the box body 10 and protrudes, and moves the operation member 50 downward to unlock the lock mechanism 45 is provided. Even if the electric release is impossible, the lock mechanism 45 can be unlocked by moving the unlocking operation rod 60 downward, and the door 2
You can open 0.

Further, on the projection 32 formed on the metallic base plate 30 attached to the side wall 10a by deep drawing,
A cover plate 80 for fitting the mounting screw hole 72 formed in the micro switch 70 and covering the micro switch 70.
By inserting the micro switch 70 into the concave portion 81 formed in, the micro switch 70 is attached and fixed at a predetermined position. As a result, the microswitch 70 can be mounted and fixed without using mounting screws, and the number of parts can be reduced.

Moreover, the lock member 40 mounted on the side wall 10a can be rotated by inserting the pin member 47 having the shaft rod into the dowel 35 formed on the base plate 30 and press-fitting and fixing the dowel 35. The lock member 40 can be rotatably mounted without using a nut and a loosening preventive agent, and the number of parts can be reduced, so that the drying time of the loosening preventive agent is unnecessary. Since it is not necessary to adjust the nut tightening, it is possible to improve the efficiency of assembly workability, and it is possible to reliably secure the clearance required for the rotation of the lock metal fitting, and to protect against shock and vibration. It can have a strong structure.

As shown in FIGS. 12 and 13, the side wall 1
The lock member 40 mounted on the base plate 0a is inserted into the dowel 35 formed on the base plate 30 with the shaft rod 48, and the cover plate 80 having the protruding holding portion 85 formed thereon is covered from above the dowel 35.
Since it is rotatably held by being sandwiched between the base plate 30 and the cover plate 80 by press-fitting and fixing the lock member 40, the lock member 40 can be rotated without using a nut and a loosening preventive agent. Because it can be installed, the number of parts can be reduced, drying time for the loosening preventive agent is unnecessary, and adjustment of nut tightening is unnecessary,
Assembling work efficiency can be improved, the clearance required for the rotation of the lock fitting can be reliably ensured, and a structure strong against shock and vibration can be obtained.

The lower part 76a of the mounting pin 76 provided on the micro switch 75 for detecting the storing operation of the key chain is supported on the back side of the base plate 30, while the upper part 76b of the mounting pin 76 is recessed for pin insertion. Since the micro switch 75 can be attached and fixed to the side wall 10a of the box body 10 by being fitted into the box body 10e, the micro switch 75 can be attached and fixed to the side wall of the box body without using attachment screws. The installation work can be easily performed.

FIG. 14 shows the key management box 1 of the second embodiment.
The lock mechanism 45A has a structure different from that of the lock mechanism 45 of the first embodiment. That is, as shown in FIGS. 15 and 16, the lock mechanism 45A has a pin engaging recess 41A for engagingly holding the locking pin 21 and an actuating protrusion 42A protruding rearward. Then, the lock member 40A rotatably held by the elastic spring 43A is urged in the unlocking direction, and the locking portion 53A is formed. It is configured by combining with an operation member 50A that is rotatably held so as to be forcibly rotated in the locking direction.

Further, the operating member 50A is integrally extended upwardly with the operating member 50A, extends upward from the side of the box body 10 and projects, and the operating member 50A is rotated in the unlocking direction. An unlocking operation rod portion 60A for unlocking the lock mechanism 45A is provided. Solenoid 5
The plunger 56A of 5A is biased upward by the elastic spring 57A, and when the solenoid 55A is actuated, the plunger 56A retracts downward against the biasing force of the elastic spring 57A to rotate the operating member 50A. Is configured.

Next, the key management box 1 of the second embodiment
The lock operation and the lock release operation of the door 20 at B will be described. The door 20 is closed, and the locking pin 2 of the door 20
When 1 is received by the pin engaging recess 41A of the lock member 40A, the operating protrusion 42A of the lock member 40A is
The butt is released and engaged with the locking portion 53A of the operating member 50A, and the operating member 50A is returned in the locking direction by the restoring force of the elastic spring 54A to maintain the locked state.

On the other hand, when the solenoid 55A is driven, the operating member 50A moves in the unlocking direction against the elastic force of the elastic spring 54A, and the operating convex portion 42 of the lock member 40A.
The engagement between A and the locking portion 53A is released, and the lock member 40A
Is returned in the unlocking direction by the restoring force of the elastic spring 43A, and the operating convex portion 42A and the locking portion 53A are brought into a butted state to hold the unlocked state.

Thus, when the door 20 is closed, the door 20 can be locked with a light force, and the door 20 will not be locked unless it is completely closed. Also,
The operation member 50A is integrally extended upward to the operation member 50A, extends upward from the side of the box body 10 and protrudes, and moves the operation member 50A downward to unlock the lock mechanism 45A. Since the lock operation rod portion 60A is provided, even if the solenoid 55A cannot electrically release the lock operation rod portion 60A, the lock mechanism 45A is unlocked by rotating the unlock operation rod portion 60A in the unlocking direction. The door 20 can be opened.

Key management box 1 configured as described above
As shown in FIG. 18, A (1B) is the state shown in FIG. 19 in the key storage device A installed at the entrance of an apartment or the like.
That is, a plurality of cover plates 80 are arranged in a state of being covered on the side surfaces. Box-shaped box body 2 of the key storage device A
Is provided with a window frame door 3 that can be opened and closed, and a plurality of key management boxes 1A (1B) arranged in rows and columns are exposed from the window portion 3a of the window frame door 3. The control box 4 is exposed on the other side.

This control box 4 has a card reading port 5
And a numeric keypad 6 for inputting a personal identification number, an LCD display section 7, a speaker 8 for sounding an alarm when an error or an abnormal situation occurs, and if the front door 9 provided with a keyhole 9a is opened, As shown at 20, internal control equipment is exposed to facilitate maintenance. 20 is the same as FIG.
Window frame door 3 on the key management box side of the key storage device A shown in FIG.
And the front door 9 of the control box 4 is open.

When the window frame door 3 of the box-shaped box body 2 and the front door 9 of the control box 4 are opened at the same time, concave step portions 2a and 2b are formed in the upper and lower inner corners of the box body 2. Therefore, the key management box 1A (1B) can be assembled by screwing the upper and lower mounting pieces 91a and 91b of the box mounting chassis 91, which will be described later, to the recessed steps 2a and 2b.

The key management boxes 1A (1B) are arranged in rows in the vertical and vertical directions on a vertically long box mounting chassis 91 and fixed by screws. For this reason, as shown in FIG. 19, the key management box 1A or 1B is provided with mounting portions 1b in which bolt insertion holes 1a are formed at the four corners of the upper, lower, left, and right.
Are inserted and fixed to the box mounting chassis 91.

On the other hand, the common plate plate 92 provided horizontally on the upper part of the key management box 1A (1B) is formed of a plastic plate, and as shown in FIG. Name plate portion 92a written
And a display unit 9 displaying management information such as the storage status of the key K.
Mounting pieces 92d and 92e are formed on the left and right ends of the plate main body 92c provided with 2b.
If d and 92e are fixed to the support pillars provided inside the box body 2 with screws, they are covered so as to cover the upper part of each box 1A (1B), and the name plate portion 92a and the display portion 92 are covered.
b is formed at once.

As shown in FIGS. 22 and 23, the name plate plate 93 is disposed in the name plate portion 92a of the common plate plate 92 on the back surface side of the name plate portion 92a by inserting it laterally. Is configured to. The name plate plate 93 has four alias names 93a written in the longitudinal direction, and the name plate plate 93 is arranged above the key management box 1 corresponding to each name 93a.

As described above, since the name plate is provided for each key management box 1 and the keys can be stored and taken out, there is an advantage that even the first use can easily find the key management box in his room.

[0051]

As described above, the key management device according to the present invention is provided with the lock mechanism (claim 1,
According to 2), when the door is closed, the door can be locked with a light force, and the door is not locked unless the door is completely closed. Also, a release operation rod provided on the operation member.
Since the door lock can be released from the outside with the
The key inside the box can be taken out without removing the box.

Furthermore, according to the deep drawn metal base plate (Claim 3) , the detection switch for detecting the locked state can be mounted and fixed without using a mounting screw. , Workability can be improved,
In addition, the number of parts can be reduced, and furthermore, the pin member having the shaft rod is inserted into the dowel formed on the side wall, and the dowel is press-fitted and fixed, whereby the lock member is rotatably held. , The lock fitting can be attached rotatably without using the nut and the loosening preventive agent, the number of parts can be reduced, the drying time of the loosening preventive agent is unnecessary, and the adjustment of the nut tightening is unnecessary. As a result, the efficiency of assembling workability can be improved, the clearance required for the rotation of the lock fitting can be reliably ensured, and a structure that is strong against shock and vibration can be obtained.

[0053]

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of a key management box according to the present invention when a door is opened.

FIG. 2 is a side view of the main part of the key management box of the first embodiment when the door is closed.

FIG. 3 is a side view of a main part of the key management box of the first embodiment when the door is opened.

FIG. 4 is a side view of the key management box of the first embodiment.

FIG. 5 is a front view showing a solenoid mounting portion of the key management box of the first embodiment.

FIG. 6 is an exploded perspective view showing a state in which a micro switch as a locking / unlocking detection sensor is mounted in a recessed recess provided in the box body and the cover body.

FIG. 7 is a partial vertical cross-sectional view showing a state in which a micro switch as an unlocking detection sensor is attached to a hollow recess provided in the box body and the cover body.

FIG. 8 is a partial cross-sectional view showing a state in which a boss portion to be inserted into a stop hole of a microswitch is formed in the recessed recess.

FIG. 9 is a partial vertical cross-sectional view showing a mounting structure for mounting a detection switch for detecting a key chain between the box body and the cover body.

FIG. 10 is a vertical cross-sectional view showing a state in which a lock member for holding the door in an open state and a closed state is attached to the base plate.

FIG. 11 is an exploded perspective view showing a state in which the lock member is attached to the base plate.

FIG. 12 is a vertical cross-sectional view of another example showing how the lock member for holding the door in the open state and the closed state is attached to the base plate.

FIG. 13 is an exploded perspective view showing a state in which the lock member is mounted between the base plate and the cover plate.

FIG. 14 is a perspective view of the key management box of the second embodiment when the door is open.

FIG. 15 is a side view of the essential parts of the key management box of the second embodiment when the door is closed.

FIG. 16 is a side view of the main part of the key management box of the second embodiment when the door is open.

FIG. 17 is a partial vertical cross-sectional view of a solenoid mounting portion of the key management box of the second embodiment.

FIG. 18 is a front view of the key management device.

FIG. 19 is a perspective view of a key management box.

FIG. 20 is an external view of the key management device showing a state in which a name plate and a box mounting chassis are incorporated.

FIG. 21 is a schematic explanatory view showing a main part of a common plate plate.

FIG. 22 is an explanatory diagram when a name plate is inserted in the key management device.

FIG. 23 is an explanatory diagram when a name plate is pulled out in the key management device.

FIG. 24 is a perspective view of a conventional key management box in a door open state.

FIG. 25 is an explanatory diagram of a door lock mechanism of a conventional key management box.

FIG. 26 is an explanatory view showing a part of a lock member in the door lock mechanism of the conventional key management box.

FIG. 27 is a partial side view showing an attached state of a lock member of a door lock mechanism of a conventional key management box.

FIG. 28 is a vertical cross-sectional view showing a mounted state of a lock member of a door lock mechanism of a conventional key management box.

FIG. 29 is an exploded perspective view showing a mounted state of a micro switch as a lock / unlock detection sensor of a conventional key management box.

FIG. 30 is a partial vertical cross-sectional view showing a mounted state of a micro switch as a lock / unlock detection sensor of a conventional key management box.

[Explanation of symbols]

1A, 1B key management box 10 box body 10a side wall 10d Switch mounting groove 10e Pin insertion recess 11 Storage 12 pivot 20 doors 21 Locking pin 30 Base plate 31 Part (deep drawing part) 32 protrusions 35 Dowel 40,40A lock member 41, 41A pin engaging recess 42, 42A working convex43,43A Elastic spring for lock member 45, 45A lock mechanism 47 pin member 48 axis rod 50,50A operation member 51 Butt Step 53A locking part 54A elastic spring 55, 55A solenoid 57 Elastic spring 60,60A unlocking operation rod 70 micro switch 71 working piece 72 Mounting screw hole 73 Micro switch body75 Keychain Micro for storing operation detection
switch 76 mounting pin 76a lower part 76b upper part 80 cover plate 81 recess 85 Projected holding part

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kunihiro Tanikawa               No. 856 Kamiri, Noda, Tsu City, Mie Prefecture               Inside the company Orms (72) Inventor Kiyoyuki Okuda               No. 856 Kamiri, Noda, Tsu City, Mie Prefecture               Inside the company Orms (72) Inventor Naoyuki Noda               No. 856 Kamiri, Noda, Tsu City, Mie Prefecture               Inside the company Orms (72) Inventor Masanori Sumiya               No. 856 Kamiri, Noda, Tsu City, Mie Prefecture               Inside the company Orms (72) Inventor Masami Chikazawa               No. 856 Kamiri, Noda, Tsu City, Mie Prefecture               Inside the company Orms                (56) Reference JP-A-4-194285 (JP, A)                 JP-A-58-199975 (JP, A)                 JP-A-1-309223 (JP, A)                 Actual Kaihei 6-18580 (JP, U)                 Actual Kaihei 3-46672 (JP, U)                 Actual development Sho 60-94557 (JP, U)                 Actual Kaihei 1-114795 (JP, U)

Claims (3)

(57) [Claims] 1. A key management box in which a door is attached to a box body having a key storage portion so as to be openable and closable by a pivot shaft, and a lock pin is attached to the open end of the door. In the side wall of the box body, a pin engaging recess and an operating protrusion for engaging and holding the locking pin are formed, and elastically urged to rotate in the unlocking direction.
A lock member that is rotatably held, and an operation member that forms a butt step, is urged upward by an elastic spring, and is movably held up and down so as to be forcibly moved downward by driving a solenoid. When the door is closed and the lock pin of the door is received by the pin engaging recess of the lock member, the lock mechanism has an elastic force of the elastic spring. Times against the force
Power is added, convey the turning force to the butt stepped portion of the operating member through the upper Symbol actuating protrusion, original from moving once downward against the operating member to the elastic force of the elastic spring When the solenoid is actuated, the operating member resists the elastic force of the elastic spring. Then, the structure is moved downward to release the locked state by the butt-holding of the butt step portion and the actuating convex portion, and then returns to the upward direction to hold the unlocked state. , A key management box having a structure in which an unlocking operation rod is provided which is connected to the operation member and extends upward from the side of the box body to protrude to move the operation member downward to unlock the lock mechanism. . 2. A key management box in which a door is attached to a box body having a key storage portion so as to be openable and closable by a pivot shaft, and a lock pin is attached to the open end of the door. In the side wall of the box body, a pin engaging recess and an operating protrusion for engaging and holding the locking pin are formed, and elastically urged to rotate in the unlocking direction.
An operation that forms a locking part with a rotatably held lock member, is urged to rotate in the locking direction by an elastic spring, and is rotatably held so that it is forcibly rotated in the unlocking direction by driving a solenoid. The lock mechanism includes a member and a lock mechanism. When the door is closed and the lock pin of the door is received by the pin engaging recess of the lock member , the lock member has the elastic spring. Times against the elastic force of
Power is added, and this turning power is applied to
Tell the engaging portion of the serial operating member, by further the upper Symbol locking member rotates, actuating protrusion of the locking member releases the butting state of the locking portion of the operating member, the locking portion and the engaging Then, the operating member is returned to the locking direction by the restoring force of the elastic spring, and the state is held to lock the operating member. The lock member is moved in the unlocking direction against the elastic force to release the engagement between the operating convex portion and the locking portion of the lock member, and the restoring force of the elastic spring of the lock member unlocks the lock member in the unlocking direction. The operating convex portion and the locking portion are brought into a butted state to hold the unlocked state, and the operating member is connected to the operating member and extends upward from the side of the box body. The operating member in the rotation direction. The moved by the key management box has a structure in which a unlocking operation rod for unlocking the locking mechanism. 3. A box switch main body is provided with a micro switch, which is brought into contact with either the lock member or the operating member, with an operating piece thereof as a locking / unlocking detection sensor, and the side wall is provided with a metal. Attach a base plate made of steel, attach the lock mechanism described above, and form a protrusion by deep-drawing a part of the base plate, and insert the mounting screw hole formed in the micro switch into this protrusion. In addition, the structure is such that the lock mechanism and the micro switch attached to the base plate are covered with a cover plate, and the micro switch main body is attached to the cover plate at a position to be attached to the main body of the micro switch. The key management box according to claim 1 or 2, wherein the key management box has a structure in which a recess corresponding to the above is formed.