JP4755701B2 - Auxiliary lock device for equipment - Google Patents

Description

The present invention relates to an auxiliary lock device used in devices such as vending machines.

In general, devices such as vending machines use an auxiliary lock device in addition to a normal main lock device in order to improve crime prevention.

The auxiliary lock device of the conventional example is fixed to the side surface portion of the fixed frame body, and is fixed to the base end portion with the shaft hole; pressed against the front surface portion of the door, and the base end portion is provided with the shaft hole. A front guard; a shaft pin provided with a rotation-preventing cross-sectional portion, a rotation-permissible cross-sectional portion, and a lock receiving portion, and inserted into the shaft hole of the fixed base so as not to rotate but to move in the axial direction; A first spring that is housed and moves and biases the shaft pin so that the rotation-allowing cross-section engages with the shaft hole of the front guard and the front guard can rotate; and is housed in the guide groove hole of the front guard. When the front guard is made unrotatable when the rotation prevention cross section of the shaft pin engages with the shaft hole of the front guard and the front guard cannot be rotated. A locking plate that engages the locking receiving portion of the shaft pin; A second spring that is housed in the front guard and moves and urges the lock plate in the direction of the shaft pin; and is fixed to the front guard so that the front end of the lock plate is detached from the lock receiving portion of the shaft pin. It consists of a lock unit in which an operation cam that is driven by a motor is connected to a rotor (see Patent Document 1).

Another conventional auxiliary lock device includes a fixed base fixed to a side surface portion of a fixed frame body, and is rotatably attached to one end of the fixed base. A front guard for restraining and holding the door; locking means capable of locking and fixing the rotation of the front guard in a state in which the front guard is moved to the predetermined position; an engagement portion provided on the front guard; An engaged portion is provided on the front surface of the door and capable of engaging and fixing the engaging portion of the front guard in a state where the front guard is moved to the predetermined position (Patent Document 2).

As described above, in the conventional auxiliary lock device, the fixed base is fixed to the side surface portion of the fixed frame body opposite to the hinge that attaches the door to the fixed frame body, and is disposed so as to protrude from the side surface portion of the fixed frame body. The presence of a fixed base is a hindrance when equipment is installed adjacent to existing structures such as buildings, or when equipment is installed adjacent to each other, between equipment and existing structures. A dead space corresponding to the protrusion amount is generated between the devices, and the installation space is wasted.

In addition, these auxiliary lock devices have a complicated structure and a large number of parts, so that the manufacturing cost increases, and the rotation prevention portion for preventing the rotation of the front guard with respect to the fixed base is localized and relatively thin at a specific location. Since it is formed, there is also a problem that the front guard itself is weak against opening of a bar by inserting a tool such as a bar.

Japanese Patent No. 2853994 Japanese Patent No. 4176661

The problem of the present invention is that the manufacturing cost can be reduced by a compact and simple configuration, and there is no component part that protrudes from the side surface portion of the fixed frame body, so that no dead space occurs when installing the devices. Another object of the present invention is to provide an auxiliary locking device for equipment which is reinforced against the opening of the front guard itself.

The auxiliary lock device of the present invention includes a lock base that is fixed to the front surface of the fixed frame body of the device, a restraint execution position that faces the front surface of the door of the device, and a restraint release position that does not interfere with the door. The connecting arm portion, which is composed of a rotating front guard and protrudes at one end in the longitudinal direction of the front guard, is provided with a long bearing hole in the longitudinal direction of the front guard, and the connecting arm at one end in the longitudinal direction of the lock base. The front guard can be rotated with respect to the lock base by a shaft hole provided in the lock base and a pivot inserted into the bearing hole, and a longitudinal direction of the lock base is provided. Movably connected in the direction,
A lock unit is embedded in a side surface of the front guard, a guide groove intersecting an extension line of the rotor of the lock unit is provided in the front guard, and a stopper is provided in a part of the guide groove and the split groove. A lock base is provided so as to be movable in the width direction of the lock base, and on the inner wall surface on the lock unit side of the split groove, a lock receiving portion is provided to engage and disengage the lock protrusion on the side of the tip of the stopper,
A cam shaft hole is formed in the base end portion of the stopper so as to penetrate in the width direction, and a passive slope portion inclined with respect to the rotation axis is formed on the inner peripheral surface of the cam shaft hole, and interlocked with the rotor of the lock unit. The mounted camshaft is inserted into the camshaft hole, a drive projection protruding from the outer peripheral surface of the camshaft is brought into contact with the passive slope portion, and the stopper is attached to the guide groove and the split groove by a spring member. It is urged to move toward the inner wall on the lock unit side,
In the locked state in which the locking projection of the stopper is engaged with the locking receiving portion of the lock base, the rotation prevention contact portion on the front guard side becomes the rotation prevention contact portion on the lock base side. While abutment prevents rotation of the front guard relative to the lock base,
When the rotor of the lock unit is rotated by a predetermined angle, the drive projection of the cam shaft pushes the passive slope portion of the stopper, so that the stopper moves in the opposite direction to the lock unit, The locking projection of the stopper is released from the locking receiving portion of the lock base, the front guard is movable in the longitudinal direction of the lock base, and the front guard is rotatable with respect to the lock base. It was made to become.

The auxiliary lock device according to the present invention includes a lock base that is fixed to the front surface of the fixed frame of the device, a restriction execution position that faces the front surface of the door of the device, and a restriction release position that does not interfere with the door. A front guard that rotates, a lock unit embedded in a side surface of the front guard, a stopper that is fitted into a part of the guide groove and the split groove of the front guard, and a stopper that is interlocked with the rotor of the lock unit. The camshaft that is inserted into the camshaft hole at the base end of the front and the pivot that is inserted into the bearing hole of the connecting arm portion of the front guard are the main components and adopts a compact and simple configuration as a whole. As a result, production costs can be reduced.

Further, when the rotor of the lock unit is rotated by a predetermined angle, the drive projection formed on the outer peripheral surface of the cam shaft pushes the passive slope portion formed on the inner peripheral surface of the cam shaft hole of the stopper, The stopper moves in the opposite direction to the lock unit against the bias of the spring member, and the locking projection on the side surface of the tip of the stopper is from the locking receiving portion on the inner wall surface of the split groove of the lock base. By escaping, the front guard can move in the longitudinal direction of the lock base, and the front guard can rotate with respect to the lock base. Therefore, the operating mechanism is simplified, and the door is closed. Regulates forward movement of the door, and always operates stably as an auxiliary lock device that can release the restriction immediately when the door is to be opened.

Furthermore, in the auxiliary lock device of the present invention, the lock base is fixed to the front surface portion of a fixed frame body of equipment, and the lock unit, the stopper, and the camshaft are normally the front surface portion of the door. Since the pivot is inserted into the fixed base, there is no component projecting on the side surface of the fixed frame. Therefore, when equipment is installed adjacent to an existing structure, or when equipment is installed adjacent to each other, dead space does not occur, and effective use of the installation space can be achieved.

When the front guard is in the restraint execution position facing the front portion of the door in the door closed state, the locking projection of the stopper engages with the locking receiving portion of the lock base, thereby The front guard is prevented from sliding in the direction of leaving, and in this state, the rotation prevention contact portion on the front guard side is in contact with the rotation prevention contact portion on the lock base side. When a tool such as a bar is inserted between the front guard and the front face of the door to try to open the front guard, the opening pressure is firmly supported by the contact part and the contacted part. Thus, an auxiliary lock device that is strong against the opening of the front guard itself can be obtained.

In the illustrated embodiment, the lock base 2 fixed to the front surface portion of the fixed frame 1 of the device has a rectangular shape in which the left and right side surfaces of the lower end portion are formed in a mountain-shaped slope in front view, and the bolt hole 3 on the back surface. It is fastened and fixed from the back side of the door 5 of the equipment by sandwiching the packing 4 with bolts (not shown) that are screwed together.

It rotates between a restraint execution position (position shown by a solid line in FIG. 4) facing the front surface of the door 5 and a restraint release position (position shown by a one-dot chain line in FIG. 4) that does not interfere with the rotation locus of the door 5. The front guard 6 has a rectangular shape in which the left and right side surfaces of the upper half are formed in a mountain-shaped slope in a front view. 7 is projecting in the longitudinal direction of the front guard 6, and the connecting arm portion 7 is a wide fan-shaped plate having a width that is slightly more than a quarter of the width of the front guard 6 in a front view.

A long hole-like bearing hole 8 that is long in the longitudinal direction of the front guard 6 is provided in the center of the side surface of the connecting arm portion 7 so as to penetrate in the left-right direction. The lower end surface of the connecting arm portion 7 is composed of an arcuate surface portion 9 centering on the upper end portion of the bearing hole 8 and a linear surface portion 10 connected to the front side of the arcuate surface portion 9. A contact portion for preventing rotation of the guard 6 is formed. A positioning projection 11 is provided on the left side of the lower end surface of the front guard 6 so as to be spaced from the connecting arm portion 7. The connecting arm portion 7 and the positioning projection 11 are arranged in parallel.

  At one end in the longitudinal direction of the lock base 2, that is, the upper end surface shown in the figure, a split groove 12 is formed in which the connecting arm portion 7 is slidably fitted in the longitudinal direction and is rotatably fitted to the lock base 2. The lower inner end surface of the split groove 12 is composed of an arc surface portion 13 centering on the upper end portion of the bearing hole 8 and a linear surface portion 14 connected to the front side of the arc surface portion 13. It constitutes a rotation-preventing contacted portion of the guard 6. The abutted portion is formed thick. A positioning groove 15 is formed on the left side portion of the upper end surface of the lock base 1 with a gap between it and the split groove 12. The split groove 12 and the positioning groove 15 are arranged in parallel.

A lock unit 17 having a built-in cylinder lock mechanism is fitted into the lock receiving hole 16 opened on the left side surface of the front guard 6, and a U-shaped mounting bracket 18 inserted into the outer cylinder groove from the back side of the front guard 6. And the front guard 6 by screws 19. The distal end shaft portion 21 of the rotor 20 of the lock unit 17 is formed in an oval cross section. A receiving hole 23 having an oval cross section is provided at the center of the base end portion of the cylindrical cam shaft 22. The cam shaft 22 is interlocked with the rotor 20 of the lock unit 17 by fitting the front end shaft portion 21 of the rotor 20 into the receiving hole 23.

The guide groove 24 at the lower end portion of the front guard 6 is formed in the base portion of the connecting arm portion 7 in the longitudinal direction of the front guard 6 and intersects the extension line of the rotor 20 of the lock unit 17 at a right angle. The stopper 25 accommodated in the upper end portions of the guide groove 24 and the split groove 12 is a plate-like member whose upper end portion is formed in a substantially circular shape. The inner wall surface 26 on the lock unit 17 side of the split groove 12 is provided with a lock receiving portion 28 for engaging and disengaging the lock protrusion 27 on the side surface of the lower end portion of the stopper 25.

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A cam shaft hole 29 having a diameter larger than that of the cam shaft 22 is provided in the upper end portion of the stopper 25 in the width direction, and an inner peripheral surface portion of the cam shaft hole 29 is provided with respect to the rotation axis of the cam shaft 22. A pair of passive slopes 30 that are inclined to each other are formed. A pair of drive protrusions 31 protrude from the end portion of the outer peripheral surface of the cam shaft 22. The cam shaft 22 is disposed so as to contact the inner wall surface 32 on the opposite side of the guide groove 24 from the lock unit 17. A spring member 34 made of a compression coil spring is inserted between the inner circumferential step surface 33 of the cam shaft hole 29 and the inner wall surface 32 of the guide groove 24, and the passive inclined portion 30 of the stopper 25 is driven by the cam shaft 22. While pressing against the protrusion 31, the stopper 25 is pressed against the inner wall surface 35 of the guide groove 24 on the lock unit 17 side.

The guide groove 24 of the front guard 6 is closed by a back plate 36, and the back plate 36 is screwed into a screw hole 38 of the front guard 6 and a screw hole 39 of the connecting arm portion 7 through a through hole 37. The front guard 6 and the connecting arm portion 5 are fastened and fixed. Since the main body portion of the front guard 6 and the connecting arm portion 7 are coupled by the back plate 36, the connecting arm portion 7 is reinforced.

A click pin 41 is built in the lower portion of the lock base 2, and the click pin accommodation hole 42 opens in the arc surface portion 13 of the split groove 12. The click pin 41 is urged to move upward by a click spring member 43 made of a compression coil spring. A click groove 44 in which the tip end portion of the click pin 41 is engaged and disengaged is provided on the front surface of the lower end portion of the connecting arm portion 7 of the front guard 6. The retaining pin 56 that is cross-inserted into the click pin 41 is inserted into the vertical slot 55 of the lock base 2.

The cavity 45 at the upper back surface of the front guard 6 has a horizontal partition wall 46, and a latching hole 47 is formed in the horizontal partition wall 46 so as to penetrate vertically. A hook plate 48 that engages with the retaining hole 47 is fixed to a portion of the front surface of the door 5 that is hidden by the front guard 6. The stepped portion 49 on the side wall portion of the lock base 2 engages with the stepped portion 50 on the side wall portion of the front guard 6. The hook plate 48 is fixed to the door 5 by screws (not shown) passing through the through holes 58.

The shaft hole 51 provided in the right side surface portion of the lock base 2 so as to intersect the split groove 12 at a right angle does not penetrate the left side surface portion. The pivot shaft 52 inserted into the bearing hole 8 of the connecting arm portion 7 through the shaft hole 51 is fastened and fixed to the lock base 2 by a set screw 53.

According to the auxiliary lock device configured as described above, the door 5 closed with respect to the fixed frame 1 is restrained to the closed position by the front guard 6 being applied to the front surface portion of the door 5. In this restrained state, the stopper 25 pushed by the spring member 34 as shown in FIG. 2 is in contact with the inner wall surface 26 of the guide groove 24 on the lock unit 17 side, and the locking protrusion 27 of the stopper 25. Is engaged with the lock receiving portion 28 on the inner wall surface of the split groove 12. Therefore, the front guard 6 is locked so as not to slide with respect to the lock base 2. The drive protrusion 31 of the cam shaft 22 is engaged with the inner end portion of the passive inclined surface portion 30 of the stopper 25, that is, the end portion of the cam shaft hole 29 on the inner peripheral step surface 33 side.

As shown in FIG. 6, the linear surface portion 10 on the lower end surface of the connecting arm portion 7 is in contact with the linear surface portion 14 on the inner surface of the dividing groove 12, thereby preventing the front guard 6 from rotating with respect to the lock base 2. ing. As shown in FIGS. 1 and 3, the lower end surface of the positioning protrusion 11 of the front guard 6 is engaged with the inner surface of the positioning groove 15 of the lock base 2. Rotation is blocked. Furthermore, as shown in FIGS. 3 and 4, the stepped portion 50 on the side wall portion of the front guard 6 is engaged with the stepped portion 49 on the side wall portion of the lock base 2. The front guard 6 is prevented from rotating.

That is, in this embodiment, since three sets of the rotation prevention contact portion on the front guard 6 side and the rotation prevention contact portion on the lock base 2 side are prepared, the front guard 6 or the Even if it tries to open itself, these three sets of rotation-preventing contact portions and contacted portions are dispersed and strongly resisted, so that it is possible to accurately protect against unauthorized thieves.
The hook plate 48 engaged with the latch hole 47 also functions as a rotation prevention means for the front guard 6. A rear cover 54 is fitted on the front guard 6. The back cover 54 is fixed to the front guard 6 by screws (not shown) screwed into the back cover mounting screw holes 57. The back cover 54 is provided with a passage opening 59 for the hook plate 48.

When opening the door 5, a predetermined key (not shown) is inserted into the lock unit 17, and the rotor 20 is rotated in a predetermined direction by a predetermined angle. The cam shaft 22 rotates in conjunction with the rotation of the rotor 20, and the driving projection 31 of the cam shaft 22 presses the passive inclined surface portion 30 of the cam shaft hole 29 of the stopper 25, so that the stopper 25 biases the spring member 34. On the contrary, the guide groove 24 is translated in a direction away from the lock unit 17. When the stopper 25 comes into contact with the inner wall surface 32 of the guide groove 24 opposite to the lock unit 17, the locking protrusion 27 of the stopper 25 escapes from the lock receiving portion 28 on the inner wall surface of the dividing groove 12. Therefore, the front guard 6 can slide upward with respect to the lock base 2.

By the upward sliding of the front guard 6, the hook plate 48 is detached from the retaining hole 47 of the front guard 6, and the linear surface portion 10 on the lower end surface of the connecting arm portion 7 is detached from the linear surface portion 14 on the inner surface of the dividing groove 12. Then, the lower end surface of the positioning protrusion 11 of the front guard 6 is detached from the inner surface of the positioning groove 15 of the lock base 2, and is separated from the step portion 49 of the side wall portion of the lock base 2 from the step portion 50 of the side wall portion of the front guard 6. Therefore, the front guard 6 can be rotated with respect to the lock base 2. The pivot 52 apparently moves to the lower end of the bearing hole 8.

When the free front guard 6 is rotated around the pivot 52 to the restraint release position shown by the chain line in FIG. 6, the door 5 is not restrained by the front guard 6, and in FIG. It is rotated open about a hinge shaft (not shown) mounted on the right side.
When the front guard 6 is turned to the restraint release position, the click pin 41 engages with the click groove 44, and the front guard 6 is stably held at that position.

After the door 5 is closed and rotated, when the front guard 6 is rotated around the pivot 52 to the restraint execution position shown by the solid line in FIG. 6, the hook plate 48 enters the back cavity 45 of the front guard 6. When the hand is released from the front guard 6 at this stage, the front guard 6 slides downward along the front surface of the door 5 due to its own weight, and the front hook portion of the hook plate 48 latches the partition wall portion 46 of the hollow portion 45. Engage with the hole 47. The downward sliding of the front guard 6 can also be performed by pulling down the front guard 6 by hand.

When the front guard 6 slides downward, the connecting arm portion 7 of the front guard 6 is deeply engaged with the split groove 12 of the lock base 2, and the pivot 52 apparently moves up in the bearing hole 8. When the pivot shaft 52 is engaged with the upper end portion of the bearing hole 8, the locking projection 27 of the stopper 25 that has slid on the inner wall surface 26 of the dividing groove 12 from the inner wall surface 35 of the guide groove 25 until then is formed in the dividing groove 12. Since the lock receiving portion 28 of the inner wall surface 26 is automatically engaged, the lock of the front guard 6 with respect to the lock base 2 is automatically established.
When the stopper 25 abuts against the inner wall surface 35 of the guide groove 24, the drive projection 31 of the cam shaft 22 is located on the inner end portion of the passive inclined surface portion 30 of the stopper 25, that is, on the inner peripheral step surface 33 side of the cam shaft hole 29. It will be engaged with the end portion.

When the front guard 6 slides downward, the linear surface portion 10 at the lower end surface of the connecting arm portion 7 comes into contact with the linear surface portion 14 at the inner surface of the split groove 12, and the lower end surface of the positioning projection 11 of the front guard 6 is the lock base 2. Engage with the inner surface of the positioning groove 15, engage the stepped portion 50 on the side wall portion of the front guard 6 with the stepped portion 49 on the side wall portion of the lock base 2, and prevent the front guard 6 from rotating relative to the lock base 2. become.
Thus, since the locking of the front guard 6 with respect to the lock base 2 is automatically established, the auxiliary lock device of this embodiment is excellent in the ease of operation.

Unlike the above-described embodiment, the main door lock handle device that locks the door to the fixed frame body can be a restraint target. In that case, fix the lock base to the front part of the fixed frame close to the main door lock handle device, or fix the lock base to the front part of the door close to the main door lock handle device. Then, the front guard is arranged so as to cover the operation handle of the door lock handle device or the front surface portion of the lock unit embedded in the operation handle.

It is a front view of the auxiliary lock device concerning one example of the present invention. It is a rear view when the back cover, packing, and back plate of the auxiliary lock device of FIG. 1 are removed. It is a right view of the auxiliary | assistant lock apparatus of FIG. It is a left view of the auxiliary | assistant lock apparatus of FIG. It is a top view of the auxiliary | assistant lock apparatus of FIG. It is the sectional view on the AA line of FIG. It is a rear view of the stopper incorporated in the auxiliary lock device of FIG. It is a right view of the stopper of FIG. It is a left view of the stopper of FIG. FIG. 10 is a sectional view taken along line B-B in FIG. 9. It is a rear view of the cam shaft incorporated in the auxiliary | assistant lock apparatus of FIG. It is a left view of the cam shaft of FIG. It is a front view of the hook board integrated in the auxiliary | assistant lock apparatus of FIG. It is a right view of the hook board of FIG. It is a front view of the back board integrated in the auxiliary | assistant lock apparatus of FIG. FIG. 16 is a left side view of the back plate of FIG. 15. FIG. 16 is a plan view of the back plate of FIG. 15.

DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Lock base 3 Bolt hole 4 Packing 5 Door 6 Front guard 7 Connection arm part 8 Bearing hole 9 Arc surface part 10 of a connection arm part Linear surface part 11 of a connection arm part 12 Positioning protrusion 12 Split groove 13 Arc surface part of a division groove 14 Straight surface 15 of split groove 16 Positioning groove 16 Lock receiving hole 17 Lock unit 18 Mounting bracket 19 Screw 20 Rotor 21 Rotor shaft 22 Cam shaft 23 Receiving hole 24 Guide groove 25 Stopper 26 Inner wall surface of the split groove on the lock unit side 27 Locking projection 28 on the stopper 28 Lock receiving portion 29 on the split groove side Cam shaft hole 30 on the stopper Passive inclined surface portion 31 on the cam shaft hole 32 Drive projection 32 on the cam shaft Inner wall surface 33 on the opposite side of the locking unit on the guide groove Inner peripheral step surface 34 of the shaft hole Spring member 35 for biasing the stopper Inner wall surface 36 on the lock unit side of the guide groove 36 37 Back hole 38 Front guard screw hole 39 Connecting arm screw hole 40 Screw 41 Click pin 42 Click pin receiving hole 43 Click spring member 44 Click groove 45 Front guard rear cavity 46 Horizontal partition wall 47 Hanging Stop hole 48 Hook plate 49 Step portion 50 on the side wall portion of the lock base Step portion 51 on the side portion of the front guard 51 Shaft hole 52 on the lock base 52 Axle 53 Stop screw 54 Back cover 55 Slot 56 Retaining pin 57 Screw hole for attaching the back cover 58 Hook plate through-hole

Claims (1)

It consists of a lock base that is fixed to the front part of the fixed frame body of the equipment, a front guard that rotates between a restraint execution position that faces the front part of the door of the equipment and a restraint release position that does not interfere with the door, A connecting arm portion protruding from one end of the front guard in the longitudinal direction is provided with a long bearing hole in the longitudinal direction of the front guard, and a split groove into which the connecting arm portion is fitted at one end of the lock base in the longitudinal direction. The front guard can be rotated with respect to the lock base and can be moved in the longitudinal direction of the lock base by a shaft hole provided in the lock base and a pivot inserted into the bearing hole,
A lock unit is embedded in a side surface of the front guard, and a guide groove is formed in the front guard so as to cross the extension line of the rotor of the lock unit and communicate with the split groove, in the guide groove and a part of the split groove. A stopper receiving portion in which a stopper is fitted so as to be movable in the width direction of the front guard and the lock base, and a locking projection on the side surface of the front end of the stopper is engaged with and disengaged from the inner wall surface of the locking groove on the lock unit side. Provided,
A cam shaft hole is formed in the base end portion of the stopper so as to penetrate in the width direction, and a passive slope portion inclined with respect to the rotation axis is formed on the inner peripheral surface of the cam shaft hole, and interlocked with the rotor of the lock unit. The mounted camshaft is inserted into the camshaft hole, a drive projection protruding from the outer peripheral surface of the camshaft is brought into contact with the passive slope portion, and the stopper is attached to the guide groove and the split groove by a spring member. It is urged to move toward the inner wall on the lock unit side,
In the locked state in which the locking projection of the stopper is engaged with the locking receiving portion of the lock base, the rotation prevention contact portion on the front guard side becomes the rotation prevention contact portion on the lock base side. While abutment prevents rotation of the front guard relative to the lock base,
When the rotor of the lock unit is rotated by a predetermined angle, the drive projection of the cam shaft pushes the passive slope portion of the stopper, so that the stopper moves in the opposite direction to the lock unit, The locking projection of the stopper is released from the locking receiving portion of the lock base, the front guard is movable in the longitudinal direction of the lock base, and the front guard is rotatable with respect to the lock base. Auxiliary lock device for equipment.