JP3688245B2 - Three-position automatic locking door lock device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a door locking device used for opening and closing and locking a storage box for various devices.
[0002]
In a conventional door locking device, a housing is fitted and fixed in a mounting hole formed in the door, and a base end portion of an operation handle that is fitted in a recessed manner on the front surface of the housing is pivoted to the housing, so that the receiving on the box body side is received. The hook plate that engages and disengages with the gold is housed in the front recess and pivotally attached to the housing, and the spring is installed between the operation handle and the housing to urge the operation handle in the lying down direction. A spring is provided between the hook plate and the housing so as to rotate and urge the hook plate in the direction in which the hook plate is engaged, and a drive plate for pulling the hook plate in the direction away from the receiver is provided on the back side of the operation handle.
[0003]
In this conventional apparatus, the door is locked and locked with respect to the box body by the engagement of the hook plate and the receiver, and therefore the door is locked and locked with respect to the box body only at one place. Since this door locking device is usually installed at an intermediate position in the height direction of the door, in the case of a tall door, the upper portion of the door and the lower portion of the door are loosely tightened on the box body. .
[0004]
In order to perform sufficient tightening on the upper and lower parts of the door, a lock device for the upper part and a lock device for the lower part may be added separately. Depending on the height of the door, it may be necessary to extend the back depending on the height of the door, or to use an auxiliary stand depending on the height of the device, and when locking / unlocking the locking device installed at the lower part of the door Since it is necessary to bend and perform in an unnatural posture, it is necessary to separately lock and unlock the three locking devices, so that the operability is poor.
[0005]
[Problems to be solved by the invention]
Therefore, the subject of the present invention is that the door closing and locking and the door unlocking and opening are both simplified by a single operation in a natural posture, so that the three-point automatic locking type with excellent operability is achieved. The door locking device is provided.
[0006]
[Means for Solving the Problems]
The three-position automatic locking door locking device of the present invention will be described below with reference to the attached drawings. The housing 3 is fitted and fixed in the mounting hole 2 formed in the door 1, and the front recess 4 of the housing 3 is fixed. by the housing 3 pivotally mounted, the box body 6 side base end portion 8a of the pivot axis 15 of the hook plate 8 disengaging the socket member 7 of the undulations can be fitted into the pivot 15 the base end portion of the operating handle 5 to A spring 9 is provided between the operation handle 5 and the housing 3 so as to pivot on the housing 3 and bias the operation handle 5 in the lying down direction. A spring 10 is provided between the hook plate 8 and the housing 3, and a drive plate 11 that pulls the hook plate 8 in a direction to be detached from the receiver 7 is provided on the back side of the operation handle 5 to constitute the main lock unit A.
Two sub-block units B are arranged with the main lock unit A in between, the housing 33 of the sub-block unit B is fixed to the back side of the door 1, and the hook is engaged with and disengaged from the metal receiver 47 on the box body 6 side. A base end 38 a of the plate 38 is pivotally attached to the housing 33 by the pivot 36, and a spring 44 is provided between the hook plate 38 and the housing 33 to urge the hook plate 38 in a direction to engage with the receiving plate 47. The housing 33 is provided with a stopper portion 37 for stopping the rotation of the hook plate 38 at the position engaged with the receiver 47.
When the hook plate 8 of the main lock unit A and the hook plate 38 of the two sub-block units B are connected by the interlocking member 41, the receivers 7 and 47 collide with the cam inclined surfaces 8b and 38b of the hook plates 8 and 38. When the hook plates 8 and 38 are retracted and rotated and the receivers 7 and 47 pass through the cam inclined surfaces 8b and 38b, the locking projections 8c and 38c of the hook plates 8 and 38 are engaged with the receivers 7 and 47, respectively. It is made to invert.
[0007]
[Effects of the Invention]
As shown in FIG. 5, in the closed and locked state of the door 1, the hook plate 8 of the main lock unit A is engaged with the metal receiver 7, and this engaged state is held by the rotational bias of the spring 10. . The operation handle 5 is laid down in the front recess 4 of the housing 3 so as not to get in the way, and this laid-down state is held by the rotation bias of the spring 9. Further, the hook plate 38 of the sub-block unit B is engaged with the metal receiver 47, and this engaged state is held by the rotational urging force of the spring 44, and the door 1 has a box main body at three locations, upper, middle and lower. 6 is tightened and locked.
[0008]
In order to unlock the door 1 by releasing the lock of the door 1 on the box body 6, the operator inserts his hand into the front recess 4 of the housing 3, puts his finger on the tip of the operation handle 5, and moves the operation handle 5. With respect to the pivot 15, it is pulled out and rotated counterclockwise in FIG. 5 against the bias of the spring 9. At this time, the drive plate 11 of the operation handle 5 moves in the opening 12 of the housing 3.
Thus, in the process in which the operation handle 5 is rotated about the pivot 15 and pulled out from the front recess 4 of the housing 3, in the main lock unit A, the hook plate 8 is pulled by the drive plate 11 of the operation handle 5. Therefore, it is rotated about the pivot 15 counterclockwise in FIG. 5 against the bias of the spring 10. By this rotation, the locking projection 8c of the hook plate 8 is detached from the receiver 7 as shown in FIG.
[0009]
In the two upper and lower sub-block units B, the hook plate 38 is in an interlocking relationship with the hook plate 8 of the main lock unit A via the interlocking member 41, so that the operation handle 5 is in front of the housing 3 as described above. In the process of being pulled out from the recess 4, the hook plate 38 is rotated around the pivot 36 in the counterclockwise direction in FIG. 9 against the bias of the spring 44. As a result of this rotation, the locking projection 38 c of the hook plate 38 is detached from the receiver 47 as indicated by the phantom line in FIG.
Thus, since the three locking locks are simultaneously released, the door 1 is opened by pulling the operation handle 5 forward as it is.
[0010]
When the finger is released from the operation handle 5 after the door 1 is opened, the operation handle 5 rotates in the clockwise direction in FIG. 7 about the pivot 15 by the bias of the spring 9 and is immersed in the front recess 4 of the housing 3. Return to the state.
Thus, when the operation handle 5 rotates back, the hook plate 8 of the main lock unit A is not pulled by the drive plate 11, so that the hook plate 8 is centered on the pivot 15 by the bias of the spring 10 as shown in FIG. , The tip is held at a standby position perpendicular to the back surface of the housing 3.
The hook plate 38 of the sub-block unit B is interlocked with the hook plate 8 of the main lock unit A via the interlocking member 41, and rotates counterclockwise in FIG. The hook plate 38 is held at a standby position perpendicular to the back surface of the door 1 by the positioning protrusion 39 engaging with the stopper portion 37 of the housing 33.
[0011]
When the door 1 is closed and rotated about the hinge 30, the cam slope 8 b of the hook plate 8 of the main lock unit A abuts the receiver 7 near the end of the closing operation, while the hook plate 38 of the sub-block unit B The cam inclined surface 38 b comes into contact with the metal receiver 47.
When the door 1 is further closed, the hook plates 8 and 38 are pushed relative to the receivers 7 and 47 and rotate around the pivots 15 and 36 by a certain angle in the retracting direction away from the receivers 7 and 47.
At the moment when the door 1 is completely closed and the locking ends 8c and 38c of the hook plates 8 and 38 face the receiving plates 7 and 47, the hook plates 8 and 38 are rotated by the bias of the springs 10 and 44. The catches 7 and 47 and the locking projections 8c and 38c of the hook plates 8 and 38 are engaged.
Similarly to the operation when the door 1 is opened, the operation when the door 1 is closed is simultaneously performed by the interposition of the interlocking member 41.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
In the main lock unit A, the hook plate 8 is disposed outside the housing 3, the opening 12 through which the drive plate 11 of the operation handle 5 passes is formed in the housing 3, and the operation handle 5 is in the front recess 4 of the housing 3. In the closed and locked state of the door 1 in which the hook plate 8 is engaged with the metal receiver 7 while lying down, the opening 12 of the housing 3 is closed by the operation handle 5. Therefore, rainwater or splashed water that has entered the front recess 4 of the housing 3 does not enter the inside of the box body 6 via the opening 12 and is excellent in waterproofness.
[0013]
A rear central portion of the housing 3 is depressed to the front side to form a rear concave portion 13, a base end portion of the hook plate 8 is accommodated in the rear concave portion 13, and a pair of rear raised portions formed on both sides of the rear concave portion 13. 14, the operating handle 5 and the pivot 15 of the hook plate 8 are fitted and the opening 12 is formed in the bottom wall 16 of the back recess 13. Thus, since the pivot 15 is firmly supported by the housing 3 at both ends, the mechanical robustness is excellent.
The opening 12 through which the drive plate 11 of the operation handle 5 passes is provided in the bottom wall portion 16 of the back recess 13 that is recessed toward the front side of the housing 3, and the opening 12 is provided in advance in the operation handle 5. It is arranged close to. Therefore, it is not necessary to attach any additional member for closing the opening on the operation handle 5 side or the housing 3 side, and the shape structure on the back side of the operation handle 5 or the front side of the front recess 4 is simplified. .
[0014]
A packing member 13 that abuts on the periphery of the opening 12 of the housing 3 is attached to the operation handle 5. For this reason, the opening 12 is more accurately closed, and the waterproofness and sound insulation are further improved. A packing member 18 that abuts on the operation handle 5 is attached to the periphery of the opening 12 of the housing 3. For this reason, the opening 12 is more accurately closed, and the waterproofness and sound insulation are further improved.
[0015]
In the main lock unit A, the drive plate 11 of the operation handle 5 has a bent end portion 11 a welded to the center line of the back surface of the operation handle 5. The side surface of the drive plate 11 that faces the pivot 15 is formed as an arc surface 11b with the pivot 15 as the center of curvature. The drive projection 11c formed at the tip of the circular arc surface 11b engages with the passive projection 8a provided on the hook plate 8 side, so that the hook plate 8 is pulled by the drive plate 11 when the operation handle 5 is pulled out. It has become so.
[0016]
The operation handle 5 and the hook plate 8 are pivotally attached to the housing 3 by a common pivot 15, and the pivot 15 is arranged in parallel with the front surface of the housing 3. An enlarged head 15 a is formed at one end of the pivot 15, and a retaining ring 19 is fitted into the annular groove 15 b at the other end of the pivot 15.
The overturning biasing spring 9 of the operation handle 5 is constituted by a torsion coil spring, and is housed inside one rear raised portion 14 of the housing 3. The coil portion 9 a of the spring 9 is fitted on the pivot 15, one linear end portion 9 b abuts on the spring receiving projection 5 b on the inner wall surface of the intermediate portion of the operation handle 5, and the other linear end portion 9 c is the inner bottom surface of the rear raised portion 14. Abut.
[0017]
The return urging spring 10 of the hook plate 8 is formed of a torsion coil spring and is housed in the back recess 13 of the housing 3. The coil portion 10 a of the spring 10 is fitted to the pivot 15, the linear end portion 10 b is in contact with the outer bottom surface of the back recess 13, and the intermediate U-shaped bent portion 10 c is on the side opposite to the cam slope 8 b of the hook plate 8. It is in contact with the side surface 8d.
A lock unit 20 such as a cylinder lock is attached to the tip of the operation handle 5. A metal plate 21 is welded to the inner bottom surface of the front recess 4 of the housing 3.
[0018]
A stopper plate 23 is connected to the tip of the rotor 22 of the lock unit 20. When a predetermined key 24 is inserted into the key hole 25 of the rotor 22 and the rotor 22 is rotated by a predetermined angle, the metal receiving plate 23 is engaged with the bent tip 21 b of the metal receiving plate 21, and the operation handle 5 is attached to the housing 3. It is locked at a position immersed in the front recess 4.
Since the base end portion 21 a of the clasp plate 23 is welded to the inner bottom surface of the rear recess 13, an opening portion 21 c having the same shape as the opening portion 12 is provided to allow the operation handle 5 to penetrate the drive plate 11. It is formed.
[0019]
The packing member 17 is fixed to the back surface of the operation handle 5. When the operation handle 5 is in the lying position, the packing member 17 is brought into close contact with the peripheral portion of the opening 21c of the clasp plate 21 to thereby form the opening 12 of the housing 3. Indirectly block.
When the clasp plate 21 is not welded, the packing member 17 is brought into close contact with the inner bottom surface of the back recess 13 that is the peripheral portion of the opening 12c when the operation handle 5 is in the lying position. The opening 12 is directly closed.
In the packing members 17 and 18, openings 17 a and 18 a having the same shape as the opening 12 are formed to allow the operation handle 5 to pass through the drive plate 11. Thus, since the opening part 12 is obstruct | occluded, the sound which generate | occur | produced inside the box main body does not escape outside via the opening part 12, and it is excellent in sound-insulating property.
[0020]
In the sub-block unit B, the housing 33 is fastened and fixed to the door 1 by a bolt 35 passing through the mounting hole of the door 1 and the mounting hole 43 of the housing 33 and a nut 34 fitted thereto. The stopper portion 37 of the housing 33 is formed so as to protrude from one of the pair of upper and lower side wall plate portions of the housing 33, and a positioning projection 39 that engages with and disengages from the stopper portion 37 is provided at an intermediate portion of the hook plate 38. When the positioning protrusion 39 engages with the stopper portion 37, the hook plate 38 is held at a position standing upright with respect to the back surface of the door 1.
[0021]
The biasing spring 44 of the hook plate 38 is constituted by a torsion coil spring, and the coil portion 44 a is fitted on the pivot 36 between the side wall plate portions of the housing 33. One straight end 44 b of the spring 44 engages with a notch 46 formed in the side wall plate portion, and the other straight end 44 c is a side edge portion of the hook plate 38 between the base end portion 38 a and the positioning projection 39. It engages with the notch 45 formed in. Because of this spring arrangement, the hook plate 38 is urged to rotate in a direction in which it engages with the metal receiver 47, that is, in a clockwise direction in FIG. When the locking projection 38 c of the hook plate 38 is engaged with the metal receiver 47, the hook plate 38 stands upright with respect to the back surface of the door 1, and the positioning projection 39 is in pressure contact with the stopper portion 37.
[0022]
A square hole 40 into which an interlocking member 41 made of a square bar is inserted is formed at the tip of the hook plate 38 of the sub-block unit B, and a similar corner is formed at the tip of the hook plate 8 of the main lock unit A. A hole 42 is formed. The interlocking member 41 is prevented from falling off the hook plates 8 and 38 by caulking or adding a lock pin.
The receiver 7 of the main lock unit A and the receiver 47 of the sub-block unit B are constituted by metal bars bent in a U shape, and each base end is welded to the box body 6.
[0023]
【The invention's effect】
In the present invention configured as described above, the hook plate 8 that rotates about the pivot 15 of the main lock unit A and the hook plate 38 that rotates about the pivot 36 of the two sub-block units B are connected to each other. 41, the catch plates 7 and 47 collide with the cam slopes 8b and 38b of the hook plates 8 and 38, the hook plates 8 and 38 retract and rotate, and the catches 7 and 47 become the cam slopes 8b and 38b. The locking projections 8c and 38c of the hook plates 8 and 38 are set so as to be reversed in the direction in which the hooks 8 and 38 are engaged with the receivers 7 and 47, and the hook plates 8 and 38 are received when the door 1 is closed. By colliding with the gold 7 and 47, locking is automatically established at the three locking points. On the other hand, when the door is opened, the operation handle is pulled out and rotated to rotate the hook plate 8 at the three locking points. 38 is simultaneously rotated to the unlocking position, and the locking is automatically released, and the closing and locking of the door 1 and the unlocking and opening of the door are both performed by a single operation in a natural posture. Therefore, a three-point automatic locking door locking device with excellent operability can be obtained.
[Brief description of the drawings]
FIG. 1 is a front view of a box equipped with a door lock device according to an embodiment of the present invention in a door open state.
FIG. 2 is an enlarged view of a door equipped with the door locking device of FIG.
FIG. 3 is a front view of the main lock unit used in the door lock device of FIG. 1 in a locked state.
4 is a left side view of the main lock unit of FIG. 3. FIG.
FIG. 5 is a cross-sectional view taken along line AA in FIG.
6 is a cross-sectional view taken along line BB in FIG.
7 is a cross-sectional view of the main lock unit of FIG. 3 in an unlocked state.
FIG. 8 is a front view of the sub-block unit used in the door locking device of FIG. 1 in a locked state.
9 is a plan view of the sub-block unit of FIG. 8. FIG.
10 is a left side view of the sub-block unit of FIG. 8. FIG.
FIG. 11 is a bottom view of the sub-block unit of FIG. 8;
[Explanation of symbols]
A Main lock unit 1 Door 2 Mounting hole 3 Housing 4 Front recess 5 Operation handle 6 Box body 7 Receiving 8 Hook plate 9 Spring 10 Spring 11 Drive plate 15 Axis B Sub-block unit 33 Housing 36 Axis 37 Stopper portion 38 Hook plate 41 Interlocking member 44 Spring 47 Hook plate

Claims (1)

The housing 3 is fitted and fixed in the mounting hole 2 formed in the door 1, and the base end portion of the operation handle 5 fitted into the front concave portion 4 of the housing 3 so as to be able to be raised and lowered is pivotally attached to the housing 3 by the pivot 15. A base end portion 8b of a hook plate 8 that engages and disengages from the side receiving plate 7 is pivotally attached to the housing 3 by the pivot shaft 15 and a spring 9 that urges the operation handle 5 to rotate in the lying down direction is attached to the operation handle 5 and the housing 3. Equipped between the hook plate 8 and the housing 3 with a spring 10 that rotates and biases the hook plate 8 in a direction to engage with the receiver 7, and pulls the hook plate 8 in a direction away from the receiver 7. The drive plate 11 is provided on the back side of the operation handle 5 to constitute the main lock unit A,
Two sub-block units B are arranged with the main lock unit A in between, the housing 33 of the sub-block unit B is fixed to the back side of the door 1, and the hook is engaged with and disengaged from the metal receiver 47 on the box body 6 side. A base end 38 b of the plate 38 is pivotally attached to the housing 33 by the pivot 36, and a spring 44 is provided between the hook plate 38 and the housing 33 to urge the hook plate 38 in a direction to engage with the receiving plate 47. The housing 33 is provided with a stopper portion 37 for stopping the rotation of the hook plate 38 at the position engaged with the receiver 47.
When the hook plate 8 of the main lock unit A and the hook plate 38 of the two sub-block units B are connected by the interlocking member 41, the receivers 7 and 47 collide with the cam inclined surfaces 8b and 38b of the hook plates 8 and 38. When the hook plates 8 and 38 are retracted and rotated and the receivers 7 and 47 pass through the cam inclined surfaces 8b and 38b, the locking projections 8c and 38c of the hook plates 8 and 38 are engaged with the receivers 7 and 47, respectively. A three-point automatic locking door lock device that is designed to be reversed.

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