JPH0367184B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention rotates a plurality of rotary cams having a flat surface on the side periphery and a letter rotating body that is engageably inserted into the rotating cams by a push button, and displays a display number on each letter rotating body. In a number type security lock that operates purely mechanically, the sliding of the locking plate in the unlocking direction is enabled or disabled depending on whether the locking plate matches or does not match the recited number. The sliding movement of the locking/unlocking plate in the locking/unlocking direction is performed by an engaging protrusion molded on the locking/unlocking plate and a locking/unlocking operation plate provided with an engaging piece that engages with the locking/unlocking plate. The notch and a rotating plate formed with a protrusion that fits into the notch are locked by turning a locking/unlocking knob at the tip of a locking/unlocking shaft whose base is fixed to the rotating plate, and the locking/unlocking operation plate is moved by a spring. The tip of the number type security lock is always pressed against the inner surface of the main body, and the display number of each character rotating body matches the code number, and when unlocking, the locking/unlocking operation plate is pressed through the flat surface where each rotating cam is aligned. By turning the locking/unlocking knob in the unlocking direction, the locking/unlocking plate and the locking/unlocking operation plate slide in the unlocking direction. engaging a protrusion protruding on the inner surface of the back cover, disengaging the engaging protrusion, and sliding only the lock/unlock operation plate toward the inner surface of the tip of the security lock main body by the spring; Even when the lock is locked, by turning the lock/unlock knob in the locking direction while keeping the display number of each letter rotor consistent with the recited number, the lock/unlock plate slides in the locking direction, and the spring is accordingly released. The lock is pressed in the direction of the tip of the number type security lock body, and the engaging piece attached to the stationary locking/unlocking operation plate engages with the engaging protrusion of the locking/unlocking plate, and the lock is locked with the displayed number other than the recited number. At this time, the locking and unlocking shaft receives the pressure caused by the contact of the latch through the rotary plate having the fan-shaped notch and the protrusion on the locking and unlocking plate, so that the locking and unlocking operation plate does not come into contact with the rotary cam and the character rotating body. The present invention relates to a locking/unlocking device for a number type crime prevention lock which can be locked and unlocked without applying pressure to a character rotating device not only when unlocking but also when locking. Conventionally, as a locking/unlocking device for this type of security lock, there is a method disclosed in Japanese Unexamined Patent Application Publication No. 1983-1999, which was invented by the present applicant.
No. 141673 (Japanese Patent Publication No. 3-20553), etc., and in this invention, locking and unlocking of the security lock is performed using a stopper 38 with a complicated structure (hereinafter, reference numerals in this document refer to JP-A-59-141673). The locking plate 13 and the unlocking plate 1 engaged by
9 by operating the locking lever 14 and the unlocking lever 20, and by operating the locking lever 14 and sliding the locking rod 33 at the tip of the locking plate 13, the width increasing lever 18 is opened by operating the locking lever 14 and sliding the locking plate 13. This is done by sliding the locking and unlocking plates 13 and 19 through the sliding operation of the locking and unlocking levers 14 and 20, respectively.
9 is pulled by the spring 24 for locking the unlocking plate, the bridge portion 23 of the unlocking plate 19 presses the six-pointed star portion 3 of the character rotating body 1, and pressure is applied to the character rotating body 1. When the lock is locked, the locking rod 33 at the tip of the locking plate 13 is inserted into the lock hole.
3, the bridge part 23 presses the rotary cam 6, and pressure is applied to the character rotary body 1, which is integrated with the rotary cam 6, through the engagement recessed part 5, thereby maintaining the confidentiality of the recited number when locking and unlocking. Alternatively, it is difficult to press the push button 25 to rotate the character rotator 1 in order to set the number to the PIN number, which is inconvenient when locking and unlocking this type of security lock. However, as mentioned above, the locking/unlocking mechanism is complicated, and the complexity of the mechanism increases the cost as well as causing problems.

However, in the present invention, a fan-shaped notch 8 is provided at the base of the locking/unlocking plate 1 with a latch attached to the tip, and a rotary plate 11 is provided with a protrusion 13 that fits into the notch 8.
Rotate with the lock/unlock knob 15, and lock/unlock plate 1
is slidable in the locking/unlocking direction, a locking holding spring 16 is interposed on the rotary plate 11 to maintain the locked state of the locking/unlocking plate 1, and a spring 24 is used to press the locking/unlocking operation plate 19 in the locking direction when unlocking. The elasticity is received by the inner surface 2a of the tip of the number type security lock body 2,
The locking/unlocking piece (bridge part) 21 of the locking/unlocking operation plate 19 does not press the ten-pointed star part 32 of the character rotating body 6, and no pressure is applied to the character rotating body 6, and the locking/unlocking plate 1 does not press against the character rotating body 6 when locking.
Even if the latch at the tip is inserted into the lock hole and the locking plate 1 receives pressure from the latch, the pressing force is transferred to the locking and unlocking shaft 9 through the fan-shaped notch 8 and the rotary plate 11.
The bridge portion 21 does not press the rotary cam 5 and no pressure is applied to the character rotating body 6, and the push button 33 can be pressed to easily set the number to be recited or to recite the recited number. The character rotator 6 can be rotated to maintain confidentiality.

Further, in the present invention, the locking plate 1 engaged with the stopper 38 having the complicated structure as in the prior art
3 and the unlocking plate 19 to the locking lever 14 and the unlocking lever 2
0, the locking rod 33 at the tip of the locking plate 13 is slid via the width increasing lever 18 by operating the locking lever 14 and sliding the locking plate 13, and the unlocking lever Instead of a complicated locking/unlocking mechanism performed by sliding the locking/unlocking plates 13, 19 by sliding operations of the locking/unlocking plates 14, 20, as shown in Fig. Since the locking/unlocking operation plate is provided with a locking/unlocking operation plate that can be freely engaged and disengaged, and the locking/unlocking plate is slid in the locking/unlocking direction using the locking/unlocking knob, the locking/unlocking mechanism is simple, and costs are reduced accordingly. At the same time, the number of failures is also reduced.

Reference will now be made in detail to the accompanying drawings that illustrate one example of the implementation of the invention.

Reference numeral 1 denotes a lock/unlock plate which slides on the inner surface of the number type security lock body 2 and protrudes from the left end of the body 2 as shown in Figures 1, 2 and 4. A latch (not shown) is fixed to the part, a recessed notch part 3 is bored in the middle part, and a shaft 4c is inserted into the base part. It consists of three character rotary bodies 6 that are engageably inserted into each of the narrow diameter parts 5a of the rotary cam 5 and have display number characters 6a engraved on the outer periphery. If the three display number characters 6a match the recited number, the flat surfaces of the rotating cams 5 are aligned, and the locking/unlocking plate 1 can be slid on the lower surface of the locking/unlocking operation plate 19 (described later). If the recited numbers do not match, the flat surfaces of the rotary cams 5 will not align, making it impossible for the locking/unlocking plate 1 to slide on the lower surface of the locking/unlocking operation plate 19. A known lock/unlock device part 4a that maintains the locked state of the lock plate 1, and three character rotating bodies 6 with display number characters 6a written on the outer periphery thereof.
The ten-pointed star part 32 formed on each side is pressed into the push button 3.
By pressing 3, the push button part 33a, which has an upward hollow part 33b and consists of a pressing protrusion 35, a supporting protrusion 36, and a supporting protruding surface 37 formed on the inner surface of the hollow part 33b, rotates as shown in FIG. It surrounds a known character rotation device section 4b and is provided with a sliding hole 7 that can slide on the outer peripheral surfaces of both device sections 4a, 4b. As shown in FIG. 4, 8 is a fan-shaped notch, which is bored on one side of the base end of the locking/unlocking plate 1. Reference numeral 9 denotes a locking/unlocking shaft as shown in FIG. 2, which is inserted into a recess 10 formed on the inner surface of the base of the number type security lock main body 2. Reference numeral 11 denotes a rotating plate, which is fixed to the base of the locking/unlocking shaft 9 with screws 12, and the shaft 9 is connected to the lock body 2.
This is to prevent it from being pulled out, and a protrusion 13 that fits into the fan-shaped notch 8 is provided on the outer periphery. Reference numeral 14 denotes a spring locking piece as shown in FIG. 4, which, like the projection 13, protrudes from the outer periphery of the rotating plate 11 so as to form an angle of 120° with the projection 13, and is connected to the sliding hole 7. It protrudes downward from the proximal extension 7a of the locking/unlocking plate 1 (towards the front of the paper in FIG. 4), and has a spring stopper 14a attached to the tip. Reference numeral 15 denotes a locking/unlocking knob as shown in FIGS. 1 and 2, which is inserted into the tip of the locking/unlocking shaft 9, and by turning the knob 15, a rotary plate is fixed to the base of the locking/unlocking shaft 9. 11 is rotated within the fan-shaped notch 8 of the locking/unlocking plate 1, and the rotation of the protrusion 13 within the fan-shaped notch 8 causes the locking/unlocking plate 1 to slide in the locking/unlocking direction. Reference numeral 16 denotes a lock holding spring as shown in FIG. 4, which is made of a tension coil spring and is connected between the spring locking piece 14 of the rotary plate 11 and the spring hook 17 installed on one side of the base end of the lock body 2. The rotating plate 11 is always rotated in the locking direction of the locking and unlocking plate 1, and the locking holding spring 16 cannot slide the locking and unlocking plate 1 in the unlocking direction unless the locking and unlocking knob 15 is rotated. That is. Reference numeral 19 denotes a locking/unlocking operation plate, which is attached to the upper surface of the locking/unlocking plate 1 as shown in FIG. Three through holes 20, 2 into which both the three individual character rotation device parts 4b are inserted.
0, 20 are drilled, locking/unlocking pieces (bridge parts) 21, 21 are formed at the boundaries of each through hole 20, and the three through holes 20, 21 are formed as shown in A and B of Fig. 5. 20,
20, the operating plate 1 at the tip of the through hole 20 at the tip.
9 is a locking/unlocking part 21a, and a through hole 20 at the base end of the operation plate 19 is opened. Reference numeral 22 denotes a spring receiver curved and protruding from one side of the tip of the operating plate 19, which receives a spring 24 made of a compression coil spring fitted into a spring fitting groove 23 formed on the inner surface of the side of the lock body 2. The spring receiver 22 is pushed into the lock body 2 by the elasticity of the spring holder 24.
The locking/unlocking operation plate 19 is always pressed against the inner surface 2a of the distal end of the lock body 2. Reference numeral 25 denotes an engagement piece whose base is pivotally supported in a hole 26 bored in the middle part of the operation plate 19;
Spring receiver 27 protruding from the side surface of the intermediate portion and the operation plate 1
A torsion coil spring 28 is interposed between the spring receiving protrusions 19a protruding from the lock plate 1, and as shown in FIG. The flat part 29a of the tip protruding from the
An engaging stepped portion 29b is provided from the bottom to constantly press the lowered engaging protrusion 29. 3
1 is a back cover 3 that closes the bottom of the number type security lock 2
0 is a protrusion protruding from the inner surface that connects the spring receiver 27 of the engagement piece 25 attached to the lock/unlock operation plate 19 and the operation plate 1.
9 when sliding in the unlocking direction, the engagement piece 25
is rotated by the elastic force of the torsion coil spring 28.

When using this, by turning the locking/unlocking knob 15 in the locking direction (arrow D) when locking, the locking/unlocking plate 1 slides toward the tip of the number type security lock body 2, and when unlocking, Flat surface 2 of engagement protrusion 29
The tip portion 25a of the engaging piece 25, which was at the position 9a, slides on the flat surface 29a and engages the engaging piece 25 and the engaging protrusion 29.
The engagement step portion 29b is engaged with the locking/unlocking plate 1 and the locking/unlocking operation plate 19 to be integrated, and when unlocking, the display number character 6a of each character rotating body 6 is matched with the recited number, and the locking/unlocking operation is performed. By turning the knob 15 in the locking/unlocking direction (arrow C), the locking/unlocking operation plate 19 integrated with the locking/unlocking plate 1 also locks/unlocks the locking/unlocking piece 21 together with the locking/unlocking plate 1.
21 and the locking/unlocking part 21a are slid under each rotating cam 5. At this time, as shown in FIG.
When the spring receiver 27 of No. 5 comes into contact with the protrusion 31 protruding from the inner surface of the back cover 30, the engagement step portion 29 between the engagement piece 25 and the engagement protrusion 29 resists the elasticity of the spring 28.
b, thereby allowing the locking/unlocking pieces 21, 21 and the locking/unlocking part 21a to slide under each rotary cam 5, and sliding the locking/unlocking plate 1 in the unlocking direction.

The present invention has the above-described configuration, and when locking, match the display number character 6a of each character rotating body 6 with the recited number, and turn the locking/unlocking knob 15 in the locking direction (arrow C), as shown in FIG. 4. The protrusion 13 of the rotary plate 11 moves within the fan-shaped notch 8 and slides the locking/unlocking plate 1 in the locking direction (toward the tip), and the tip 2 of the engagement piece 25 is moved.
5a slides on the flat surface 29a of the engagement protrusion 29 as the locking/unlocking plate 1 slides in the locking direction, and the engagement step portion 2
9b, and locks the locking/unlocking plate 1 and the locking/unlocking operation plate 19 as one body. At this time, even if the locking/unlocking plate 1 receives a pressing force from the lock hole through the latch, the locking/unlocking plate 1 is supported by the locking/unlocking shaft 9, and sliding in the unlocking direction is prevented and at the same time the locking/unlocking plate 1 is unlocked. The sliding movement of the locking operation plate 19 is also prevented, and the locking/unlocking pieces 21, 21 of the locking/unlocking operation plate 19 do not come into contact with the locking/unlocking device section 4a, and the pressing force is applied to the character rotating device section 4b. It never happens. Next, when unlocking, turn the locking/unlocking knob 15 in the unlocking direction (arrow D), and the protrusion 13 of the rotary plate 11 moves inside the fan-shaped notch 8 into the fourth position.
It moves in the opposite direction in the figure and slides the locking/unlocking plate 1 in the unlocking direction (proximal direction), but the locking/unlocking operation plate 19 integrated with the locking/unlocking plate 1 is also slid in the same way. , by pressing the push button 33, each character rotating body 6 is displayed. When the displayed number character 6a matches the recited number, the known flat surface of each rotary cam 5 is aligned with the surface of the locking/unlocking operation plate 19, and the locking/unlocking operation plate 19 is pressed. locking/unlocking piece 2
1, 21, the locking/unlocking part 21a slides on the lower surface of the rotary cam 5, and the engaging piece 25 pivotally supported on the operating plate 19 also remains engaged with the engaging protrusion 29 of the locking/unlocking plate 1. Lid 3
0, the spring receiver 27 of the engagement piece 25 comes into contact with the protrusion 31, and the engagement between the engagement piece 25 and the engagement protrusion 29 is released against the elasticity of the spring 28. ,
The operating plate 19 is slid toward the distal end of the lock body 2 by the elasticity of the spring 24, and the operating plate 19 does not come into contact with the character rotating device section 4b, so that no pressure is applied thereto. Note that 34 is a recitation number setting change lever.

[Brief explanation of drawings]

The attached drawings show an example of the implementation of the present invention, and FIG. 1 is a front view of the security lock when the lock is locked, FIG. 2 is a cross-sectional view of the main part taken along the line A-A in FIG. -B
Figure 4 is a rear view of the security lock when it is locked with the back cover removed, Figure 5 is the lock/unlock operation panel, Figure A is a side view, and Figure B is a rear view. 1...Lock/unlock plate, 2...Number type security lock body, 2a...Tip inner surface, 3...Recessed notch, 4
a...Lock/unlock device section, 4b...Character rotation device section,
4c...Shaft, 5...Rotating cam, 5a...Small diameter part,
6...Character rotation body, 6a...Display number character, 7...
...Through hole, 7a... Extension part, 8... Fan-shaped notch,
9...Lock/unlock shaft, 10...Protrusion, 11...Rotary plate, 12...Screw, 13...Protrusion, 14...Spring locking piece, 14a...Spring stop, 15
...Lock/unlock knob, 16...Lock holding spring, 17...Spring hook, 19...Lock/unlock operation plate, 19a...Spring receiver protrusion, 20...Through hole, 21...Lock/unlock piece, 21a... ...Lock/unlock part, 2
2...Spring receiver, 23...Spring fitting groove, 24...Spring, 25...Engagement piece, 25
a... Tip, 26... Hole, 27... Spring receiver,
28... Spring, 29... Engaging protrusion, 29a... Flat surface, 29b... Engaging step, 30... Back cover, 3
1... protrusion, 32... ten-pointed star part, 33... push button,
33a...Push button part, 33b...Upward hollow part, 3
4...Recitation number setting change lever, 35...Press protrusion, 36...Support protrusion, 37...Support protrusion.

Claims (1)

[Claims] 1. A plurality of rotary cams having a flat surface on the side periphery, a rotary cam inserted into the narrow diameter part of the rotary cam, and a character rotary body that can be freely engaged, and a through hole into which the rotary cam and the character rotary body are fitted. It consists of a locking/unlocking operation plate with a hole drilled in it, and a locking/unlocking plate that slides on the bottom surface of the operation plate and fixes a latch at the tip. , the support protrusions and the support protrusions are rotated by push buttons formed on the inner surface of the upward hollow part, and when the display number of each letter rotor matches the preset recitation number, the flat surfaces of each rotary cam are aligned;
The locking/unlocking plate is enabled to slide on the lower surface of the locking/unlocking operation plate in the unlocking direction, and when the number does not match the recited number, the flat surfaces of the respective rotary cams are not aligned and the sliding is impossible. In the number type security lock, an engaging piece is provided on the locking/unlocking operation plate, an engaging protrusion that engages with the engaging piece is attached to the locking/unlocking plate, and the number type security lock is unlocked on the back cover of the main body. Provided with a protrusion that releases the engagement between the engagement piece and the engagement protrusion that sometimes come into contact with the engagement piece,
A fan-shaped notch is provided at the base of the locking/unlocking plate, a rotating plate is provided with a protrusion that fits into the notch, and a locking/unlocking shaft is attached to the rotating plate to allow the rotating plate to freely rotate on the body of the number type security lock. The base is fixedly provided, a locking/unlocking knob is inserted into the tip of the locking/unlocking shaft, a spring locking piece is provided protruding from the rotating plate, and a spring locking piece is provided between the locking piece and the security lock body. A spring is provided to keep the rotary plate in the locked state at all times, and a spring receiver is provided protruding from one side of the tip of the locking/unlocking operation plate, inside a spring insertion groove formed on the inner surface of the tip of the number type security lock body. A locking/unlocking device for a number type security lock, characterized in that a spring is provided between the inner surface of the rear end of the fitting groove and the spring receiver.