JPH0674685B2 - Combination lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a combination lock applied to a safe deposit box, a locker locker, and various other opening / closing sections, and in particular, the present invention relates to a movable hook on a fixed side. The present invention relates to a combination lock that locks while being engaged with a hook.

<Prior Art> Conventionally, for example, a locker for renting is provided with a lock that opens and closes with a unique key for each locker.

<Problems to be solved by the invention> In the case of this type of lock, since the locker user carries the key around, troubles due to loss of the key are likely to occur, and theft accidents due to unauthorized use of the key frequently occur. ing. This can be solved by using a code lock having a plurality of dials that do not require a key. However, in the case of code locks, since the unlock code is fixed for each lock,
If the unlock code is known to another person, the function as a lock may be lost, and there is a risk that the unlock code may be illegally unlocked by another person.

Therefore, there is a strong demand in the industry for a combination lock having a structure in which the unlock code can be easily changed.

This invention has responded to the above-mentioned demand, and by interposing an operating mechanism between the movable hook and the dial lock, and devising the relationship between the operating mechanism and the dial lock and the structure of the dial lock, the unlocking code can be provided. An object is to provide a combination lock which can be easily changed and has an extremely simple structure.

<Means for Solving Problems> The present invention relates to a combination lock that locks a movable hook in a state in which a movable hook is engaged with a fixed side hook. An operating mechanism including a tubular portion that rotates integrally with the photographing operation, wherein the operating photographing mechanism and the tubular portion are connected to the movable hook, and a dial lock provided to regulate the rotation of the operating mechanism. Composed of.

The dial lock is arranged so as to be capable of reciprocating in a direction orthogonal to the tubular portion, and an operating shaft provided with a plurality of convexes at equal intervals on the shaft circumferential surface, and the operating shaft is attached to the operating mechanism side. A spring that urges the end portion against the outer peripheral surface of the tubular portion, and a convex engaging groove that is provided on the operating shaft and that engages and disengages with each convex by reciprocating motion of the operating shaft are formed. A plurality of rotatable and reciprocating bushes, and a plurality of rotatable dials arranged on the actuating shaft via the respective bushes. Between the outer peripheral surface of the bush and the outer peripheral surface of the bush, there are formed ridges and grooves corresponding to the number of signs of dials that engage and disengage from each other by the reciprocating movement of the bush.

In addition, a concave portion is formed on the outer peripheral surface of the tubular portion to reciprocate the operating shaft by a stroke in which the protrusion and the engaging groove are engaged and disengaged with the end of the operating shaft. There is.

<Operation> When locking, when the operating mechanism is operated by shooting the operation, the end of the operating shaft, which is urged toward the operating mechanism by the spring, fits into the concave portion of the tubular portion and each convex portion on the operating shaft is locked. The engagement between the child and the projection engaging groove of each bush is released. In this state, when each dial is turned to shift the unlock code, each convex and each convex engaging groove are misaligned to form a locked state.

When the unlocking codes are aligned during unlocking, the positions of the respective projecting members and the respective projecting member engaging grooves are aligned. When the operating mechanism is operated in this state by taking a picture of the operation, the end of the operating shaft comes out of the recess, the operating shaft is pushed by the peripheral surface of the cylindrical part, and each protrusion on the operating shaft causes the protrusion of each bush to project. Since it engages with the child engaging groove, the movement of the actuating shaft is allowed and unlocked.

To change the unlock code, press and move each bush to disengage the ridge and groove between each bush and each dial, so each dial rotates with respect to each bush. It is free and any unlock code can be set.

<Embodiment> FIGS. 1 to 4 show a combination lock according to an embodiment of the present invention.

This combination lock is configured inside the housing 1 which is attached and fixed to a movable side such as a door, and is disengaged from an operating mechanism 2 which is rotatably supported by the housing 1 and a hook (not shown) on the fixed side. It is composed of a movable hook 3 and a dial lock 4 which is provided so as to be connected to the operation mechanism 2 and regulates the rotation of the operation mechanism 2.

The operation mechanism 2 includes an operation shaft 20 that penetrates the housing 1 from the front side to the back side, an operation photograph 21 is provided at one end of the operation shaft 20, and the base end of the movable hook 3 is fixed at the other end. Operation axis
A locking collar 22 located inside the housing 1 is fixed to the shaft 20 by a shaft. When the movable hook 3 is in the engaging position and the disengaging position with respect to the fixed hook, the dial 22 has a dial lock. Lock recess 23 with which the operation shaft 41 of No. 4 engages
And an unlocking recess 23a is formed respectively.

The dial lock 4 is orthogonal to the operation shaft 20 and is the housing 1
It is reciprocally movable inside and has a plurality of protrusions at equal intervals on the side of the shaft.
An operating shaft 41 having 42, and a spring for elastically urging the operating shaft 41 toward the collar 22 to press the end portion against the outer peripheral surface of the collar 22.
43, and a plurality of dials 45 which are rotatably supported on the operating shaft 41 via bushes 44 and whose outer circumferences are partially projected from the window holes 11 of the housing 1.

In the inner hole of the bush 44 of each dial 45, 1 along the axial direction
A ridge projection engaging groove 46 is formed. The number 47 such as 1, 2, 3 etc. is displayed on the outer circumference of the dial 45, and any number 47
Corresponds to the convex engaging groove 46. The operating shaft 41 is each convex on the shaft.
Sliding is allowed when the projection engaging groove 46 of each bush 44 corresponds to 42.

The dial lock 4 is provided with a mechanism for freely setting the unlocked number of each dial 45.

This mechanism forms a ridge 48 and a groove 49 in the inner hole of each dial 45 and the outer peripheral surface of the bush 44 according to the number 47 of the dial outer circumference, and the adjacent bushes 44 abut the end surfaces. In addition, the spring 50 is connected to the spring 50 to urge the protrusion 48 and the groove 49 to engage with each other, and the housing 1 is provided with the small hole 12 for inserting the protruding rod corresponding to the operating shaft 41. A pressing member 51 for pressing the bush 44 is provided inside thereof.

5 to 7 show another embodiment in which the operating mechanism 2 is composed of a cylinder lock.

In this embodiment, an outer cylinder 24 having a recess 23 for engaging and disengaging the actuating shaft 41 of the dial lock 4, an inner cylinder disposed in the outer cylinder 24 and having an operation photograph 21 at one end and a movable hook 3 at the other end. 25, a sidebar 26 that appears in the shear line between the inner and outer cylinders, and the inner cylinder
It is composed of a plurality of disc tumblers 27 which are arranged in the disk 25 and which unlock the side bar 26 by inserting a key. In this embodiment, after locking, when the arrangement of the unlocked numbers 47 is forgotten, or when the lock is accidentally locked, the side bar 26 between the inner and outer cylinders 24, 25 is disengaged by a suitable key (not shown). By rotating the inner cylinder 25, the movable hook 3 is unlocked. Incidentally, it is of course possible to adopt a pin cylinder lock in which a plurality of pins are arranged between the inner and outer cylinders as the cylinder lock.

In this embodiment, the transparent window 13 is opened on the back surface of the housing 1 so as to correspond to each bush 44, while each bush 44 is provided with a marking 52 such as a colored mark so that the projection 42 on the operating shaft 41 is When the projection engaging groove 46 of the bush 44 corresponds, the display 52 appears at a position close to the see-through window 13.

Therefore, when unlocked by the key operation, the unlocked number 47 on the dial 45 can be known.

In this embodiment, a mechanism is provided between the outer cylinder 24 of the operating mechanism 2 and the dial bush 44 closest to the outer cylinder 24 so that the space between the dial 45 and the bush 44 is freed by unlocking.

This mechanism is similar to the above example in that between the dials 45 and the bushes 44, the ridges corresponding to the numbers 47 on the outer circumference of the dials 45 are arranged.
48 and a concave groove 49 are formed, the end faces of the bushes 44 abut against each other, and a spring 50 elastically biases the same in the same direction as the actuating shaft 41, and a slide bush 53 is fitted and inserted into the tip end of the actuating shaft 41. One end of the bush 44 and the other end of the operating mechanism 2
It is connected to the outer cylinder 24 of.

As shown in FIGS. 9 and 10, the slide bush 53 has an operating piece 54 projecting from the end portion on the outer cylinder 24 side, while the outer cylinder 24 has a fixed hook and a movable piece. When the hook 3 and the hook 3 are in the engaged state, the slide bush 53 is pushed and moved in the direction of compressing the spring 50, and when the hook 3 is in the disengaged state, the operation cam 55 is formed to move in the opposite direction. FIG. 8 shows the outer appearance of the outer cylinder 24 having the actuating cam 55.

Thus, in the unlocked state, as shown in FIG. 5, the actuating shaft 41 is pushed out from the recess 23 of the outer cylinder 24, and each protrusion 42 on the operating shaft 41 engages with the protrusion engaging groove 46 of each bush 44. I am fit. On the other hand, in the slide bush 53, the operating piece 54 is located at the lower position 56a of the cam 55 and moves to the outer cylinder 24 side together with each bush 44. As a result, the engagement of the ridge 48 and the groove 49 between each dial 45 and each bush 44 is released, and each dial 45 is free to rotate with respect to each bush 44, so that the unlocking numeral 47 can be set freely.

11 to 13 show another example of the movable hook 3. The movable hook 3 of this embodiment is supported by the housing 1 so as to be retractable and retractable, and a long hole for interlocking is provided at an appropriate position of the movable hook 3.
31. The operating shaft 20 of the operating mechanism 2 is provided with operating pins 28 engaged with the elongated holes 31, respectively, and the hook 3 is reciprocated through the pins 28 and the elongated holes 31 by the forward and reverse rotation of the operating shaft 20. To move.

3 and 13 show a mechanism for holding the dial 45 at a fixed position. This mechanism is applied to each of the above-described embodiments, in which the dial 45 is provided with the concave portion 57 between the numbers on the outer circumference, while the spring mounting portion 14 is disposed in the housing 1.
A leaf spring 58 is attached to the mounting portion 14 corresponding to each dial 45, and a leaf spring tip portion 59 is elastically engaged with a recess 57 of the corresponding dial.

However, in the embodiment shown in FIGS. 1 to 4, when the movable hook 3 is in the unlocking position with respect to the fixed hook, the end of the operating shaft 41 engages with the unlocking recess 23a of the collar 22. However, each protrusion 42 on the actuating shaft 41 is disengaged from the protrusion engagement groove 46 of each bush 44 (FIG. 2).

First, the unlocking numerals 47 are aligned on the dial stop line 15 of the housing 1, and then the movable hook 3 is engaged with the fixed side hook by rotating the operating mechanism 2 by a photographing operation. At this time, the end of the actuating shaft 41 has an unlocking recess 23 of the collar 22.
While protruding from a and fitting into the lock recess 23, each of the on-axis projections 42 corresponds to a projection engagement groove 46 (FIG. 4).
By rotating each dial 45 arbitrarily in this state,
The protrusion engagement grooves 46 are displaced from the protrusions 42 to prevent the operation shaft 41 from retracting.

Therefore, in the operating shaft 21 of the operating mechanism 2, the operating shaft 41 has the collar 22.
Since it is engaged with the lock recess 23, the shaft does not rotate and the locked state is maintained.

When unlocking, first, the unlocking numeral 47 of each dial 45 is positioned on the dial stop line 15 of the housing 1, and then the operation photograph 21 is rotated in the reverse direction so that the lock recess 23 of the collar 22 is activated. The shaft 41 is retracted against the force of the spring 43, and the engagement of both hooks is released.

When changing the unlocking number 47, when inserting the projecting rod through the small hole 12 of the housing 1 and pressurizing the pressing member 51, each bush
44 compresses and slides the spring 50, and the engagement between the ridge 48 and the groove 49 between the bush 44 and the dial 45 is released. At this time, each dial 45 is turned to position a new numeral 47 on the dial stop line 15 of the housing 1, and then the pressing member is pressed.
Release the pressure on 51. This allows each bush 44 to
Re-engage into dial 45 with 50 force and unlock new number 47
Complete the settings.

In the embodiment shown in FIGS. 5 to 7, when the movable hook 3 is disengaged from the fixed side hook, the outer cylinder of the operating mechanism 2 is removed.
By the 24 and the cam 55, the operating shaft 41 is located on the dial 45 side, and the bushes 44 are slid in the opposite direction to the operating shaft 41, and the ridges 48 and the concave grooves 49 between the dials 45 and the bushes 44 are located. Is disengaged, while each protrusion 42 on the actuating shaft engages with the protrusion engagement groove 46 of each bush 44 (FIG. 5). As a result, each dial 45 is in a state of free rotation with respect to each bush 44, and the unlocking numbers 47 are aligned on the line 15 of the housing 1 for setting.

At the time of locking, similarly to the above-described example, the movable hook 3 is engaged with the fixed side hook by rotating the operation photograph 21, and the recess 23 of the outer cylinder 24 of the operation mechanism 2 is attached to the operating shaft 41. Correspondingly, the tips engage. On the other hand, the higher part of the cam 55
56b corresponds to the slide bush 53, and each bush 44 is engaged in the dial 45. By the reverse sliding of the bush 44 and the operating shaft 41, the respective projecting pieces 42 on the shaft are disengaged from the projecting piece engaging grooves 46 of each bushing 44 (FIG. 7). At this time, the locked state is maintained by rotating each dial 45 to shift the position of each projection engaging groove 46 with respect to each projection 42.

As for unlocking, as in the above-described example, by aligning the unlocking numbers 47 of the dial 45, the operation photographing device 21 can be reversely rotated and unlocked.

In this embodiment, if the user forgets the unlocked number 47, or if he / she accidentally locks it without looking at the number, in order to unlock it, a suitable key (not shown) is placed on the operation camera 21. When inserting into the inner cylinder 25 through the opened keyhole, use the disc tumbler 27
Releases sidebar 26.

Next, by rotating the key in the same direction as the operation photographing 21, the inner cylinder 25 pivots while the outer cylinder 24 remains. Since the movable hook 3 is axially fixed to the inner cylinder 25, the lock can be released. After that, the door is opened, the colored display 52 of the bush 44 is seen through the see-through window 13 on the back side of the housing 1 while turning the dial 45, the unlocked number 47 is confirmed, and the forgotten number is processed.

In the embodiment shown in FIGS. 11 to 13, the movable hook 3 is of a sliding type, and is projected and retracted from the housing 1 by the pin 28 of the actuating shaft 20, and the connection with the dial lock 4 is the same as in the above-mentioned respective embodiments. Therefore, the description thereof is omitted.

<Effects of the Invention> According to the present invention, in a safe deposit box, a locker, etc.,
Even if another person stores the unlock code, the unlock code can be easily changed, which is effective in preventing theft.

Moreover, the structure is such that the operating shaft is reciprocated by the rotation of the operating mechanism, and the locking mechanism and the unlocking code can be changed by simply making a structural ingenuity to the few members such as the operating shaft, the bush, the dial and the spring. The mechanism and the mechanism can be configured together, and the practical effect is remarkable by simplifying the configuration.

[Brief description of drawings]

1 is a front view of a combination lock according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a sectional view taken along the line BB in FIG. 4 is a sectional view showing the operating state of FIG. 2, FIG. 5 is a sectional view showing another embodiment,
FIG. 6 is a sectional view showing the operating state of FIG. 5, and FIG.
FIG. 8 is a perspective view of the outer cylinder, FIG. 9 is a front view of the slide bush, FIG. 10 is a side view of the slide bush of FIG. 9, and FIG. FIG. 12 is a front view showing an embodiment, FIG. 12 is a sectional view taken along the line DD in FIG. 11, and FIG. 13 is a sectional view taken along the line EE in FIG. 1 ... Housing, 2 ... Operating mechanism 3 ... Movable hook, 4 ... Dial lock 23 ... Recess, 41 ... Operating shaft 42 ... Convex, 43 ... Spring 44 ... Bush, 45 ... Dial 46 …… convex element engaging hole, 48 …… convex stripe 49 …… concave groove

Claims (1)

[Claims] 1. A combination lock that locks a movable hook in a state in which the movable hook is engaged with a fixed hook, the operation lock having a forward and reverse rotation operation and a tubular shape that rotates integrally with the operation lock. And a dial lock provided for restricting rotation of the operating mechanism, and the dial lock, wherein the dial lock comprises: An operating shaft that is provided so as to be reciprocable orthogonally to the tubular portion and provided with a plurality of protrusions at equal intervals on the shaft peripheral surface, and the operating shaft is urged toward the operating mechanism side and its end is urged. A spring that presses the portion against the outer peripheral surface of the tubular portion, and a protrusion engaging groove that is disposed on the operating shaft and that engages and disengages with each protrusion by reciprocating movement of the operating shaft is rotatable. And a plurality of reciprocating bushes, and a pivoting operation that is arranged on the operating shaft via each bush A plurality of dials, and between the inner hole of each dial and the outer peripheral surface of each bush, there are formed a ridge and a groove corresponding to the number of dials of the dial that engages and disengages each other by the reciprocating movement of the bush. A combination in which a concave portion is formed on the outer peripheral surface of the tubular portion to reciprocate the operating shaft by a stroke for engaging and disengaging with the end portion of the operating shaft and engaging and disengaging the respective projecting members and the projecting member engaging grooves. Tablets.