JP2649897B2 - Dial lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dial lock useful for a safe or a storage for various articles.

[0002]

2. Description of the Related Art In a conventional dial lock of this kind, as shown in FIG. 26, an assembling structure composed of a total of four locking plates is operated by a dial knob (1) from the front to rotate a dial shaft (2). At the rear end of the lock plate (3
a) is inserted via a fastening nut (4) so as to be integrally rotatable, while the remaining first and second intermediate locking plates (3b) (3)
c) and the trailing lock plate (3d) are successively mounted on the dial shaft (2) so as to be freely rotatable in a state of being placed in front of and in parallel with each other. (5) is the rock plate (3a) (3b)
(3c) A spacer interposed between adjacent ones of (3d), and (6) is a compression coil spring.

In addition, each of the rock plates (3a) (3b) (3
c) On the circumferential surface of (3d), an unlocking recess (7a) for receiving the locking claw (A) according to its overall correspondence.
(7b), (7c) and (7d) are cut out one by one, and for the mutual rotation of the adjacent rock plates, the front surface of the preceding rock plate (3a) and the rear surface of the following rock plate (3d) are removed. One engaging projection (8) (9) is provided on each of the front and rear surfaces of the first and second intermediate locking plates (3b) (3c). ) And (13) are protruded from each other, and as a whole, the rotational angle positions based on the recesses (7a) to (7d) are arranged and distributed in a phase-changed state. (14) is a face plate fixed to the open / close door (M) of the safe, and (15) and (16) are first and second bearing cylinders of the dial shaft (2).

FIG. 27 is an exploded view of the lock plates (3a) to (3d) for convenience of explanation of the locked state of the dial lock. The leading lock plate (3a) is rotated clockwise by 360 degrees (one rotation) by the dial knob (1), and its forward engaging projection (8) is directed backward to the first intermediate locking plate (3b) adjacent thereto. The engaging protrusion (11) is engaged.

Next, as shown in FIG. 28, the preceding locking plate (3a) is continuously rotated 360 degrees in the same direction, so that the forward engaging projection (10) of the first intermediate locking plate (3b) is The second intermediate locking board (3
c) Engage the rearward engaging projection (13).

After that, the preceding rock plate (3a) is
By continuing to rotate 360 degrees in the same direction, as shown in FIG. 9, the forward engaging projections (12) of the second intermediate locking plate (3c) are engaged with the rearward locking members (3d) adjacent thereto. After engaging with the convex part (9), further rotating operation by a fixed angle less than 360 degrees to a predetermined memory value (for example, 33),
d) The unlocking recess (7d) is stopped at a fixed position.

That is, if the preceding lock plate (3a) is rotated three times in total by the dial knob (1), the first intermediate lock plate (3b) is rotated twice in total, and the second intermediate lock plate (3) is rotated.
One rotation of c) starts the rotation of the trailing lock plate (3d).
By rotating the preceding locking plate (3a) by a certain angle of less than 60 degrees, the unlocking recess (7d) of the following locking plate (3d) can be kept at, for example, a certain position facing upward.

Therefore, this time, the preceding rock plate (3a)
30 is rotated 360 degrees (one rotation) in the counterclockwise direction opposite to the above, as shown in FIG.
By engaging the intermediate locking plate (3b) with the rearwardly engaging projections (11) and subsequently rotating the same in the same direction by 360 degrees, the forward engagement projections (10) of the first intermediate locking plate (3b) are rotated. ) Is engaged with the rearwardly engaging projection (13) of the second intermediate locking plate (3c), and the second intermediate locking plate (3c) is engaged.
Up to a predetermined memory value (eg 97)
The rotation operation is performed by a fixed angle of less than 360 degrees, and the unlocking recess (7c) is made to correspond to that of the trailing lock plate (3d) that has been stopped earlier.

Next, the preceding lock plate (3a) is
As shown in FIG. 1, the front engagement protrusion (8) is rotated 360 degrees clockwise to engage the rear engagement protrusion (11) of the first intermediate locking plate (3b). One intermediate locking plate (3b) is stored in a predetermined memory value (for example, 6
Until 4), rotate by a fixed angle less than 360 degrees,
The unlocking recess (7b) is made to correspond to those of the second intermediate locking plate (3c) and the trailing locking plate (3d) stopped earlier.

Finally, the preceding lock plate (3a) is shown in FIG.
2, the unlocking recess (7 a) is first stopped by rotating the unlocking recess (7 a) in a counterclockwise direction by a predetermined angle of less than 360 degrees to a predetermined memory value (for example, 84). Corresponding to those of the first and second intermediate locking plates (3b) and (3c) and the following locking plates (3d), so that the locking claws (A) are completely removed from the locking plates (3a) to (3).
Since the unlocking recesses (7a) to (7d) in (d) are accepted, the dial lock is now unlocked. As a relational state in which the lock plates (3a) to (3d) can be unlocked under such a procedure, the engaging projections (8) to (13) of the lock plates (3a) to (3d) are arranged and distributed at rotational angle positions where the phase changes. That is.

[0011]

As is apparent from the above-described unlocking procedure, in the conventional dial lock, the dial is first turned three times in a forward direction from a predetermined reference value (for example, zero). Then, rotate in the reverse direction twice to the predetermined memory value, rotate in the forward direction once again to the predetermined memory value, and finally rotate in the reverse direction. It is necessary to rotate up to the memory value.

[0012] This is not limited to a dial lock having four lock plates as described above. The same applies to a dial lock having three or five lock plates, for example.
In the case of the three cards, the dial knob is first rotated twice in the forward direction from the reference value and then in the reverse direction to the predetermined memory value in accordance with the principle of operation described above. Finally, it is necessary to rotate the memory in the forward direction up to the memory value. In the case of five cards, the dial knob is first rotated four times in the forward direction and then three times in the reverse direction. After rotating to the numerical value, it must be rotated twice in the forward direction again to the memory numerical value, then again in the reverse direction once to the memory numerical value, and finally, must be rotated in the forward direction to the memory numerical value.

In any case, in the conventional dial lock, both the number of rotations of the dial knob and the numerical value of the memory must be stored, and the unlocking operation is extremely troublesome, so that the locking performance is excellent. Nevertheless, it is still a bottleneck for diffusion.

The present invention is directed to a dial lock useful for improving such a problem as a dial lock which is rotatably operated from the front by a dial knob, and freely rotatable around a rear end of the dial shaft. And a preceding lock plate, at least one intermediate lock plate and a trailing lock plate fitted in a side-by-side state that can be successively rotated with each other, and also can be integrally rotated with the rear end of the dial shaft, and It consists of the preceding locking plate and the adjacent driving plate fitted in a side-by-side state, and the unlocking recesses for receiving the locking claws by completely corresponding to the circumferential surfaces of the locking plates and the driving plate. A notch is cut out, and a large-diameter drive gear is attached to the drive plate, and a small-diameter driven gear is attached to the preceding lock plate adjacent to the drive plate, and both gears are turned in opposite directions through the intermediary of an idle gear. As can be, and is characterized in that and is engaged on the basis of the dial knob Mino all locking plate brought revolve ratio by one rotation.

[0015]

According to the above-mentioned structure of the present invention, the dial is turned from a predetermined reference numerical value, for example, clockwise by 36 degrees.
Rotate 0 degrees (1 rotation) to keep the unlocking notch of the subsequent lock plate at a fixed position, and then turn the dial knob counterclockwise to a predetermined memory value of less than 360 degrees. Rotate by an angle to match the unlocking notch of the intermediate locking plate with that of the following locking plate, and then turn the dial knob clockwise to less than 360 degrees to the predetermined memory value. The dial lock can be unlocked by rotating the lock plate by a predetermined angle so that the unlocking recesses of the preceding lock plate correspond to those of the following lock plate and the intermediate lock plate.

That is, since all the lock plates are rotated by one rotation of the dial knob, only the memory values corresponding to the number of the lock plates are stored, and each of the lock plates is set at a fixed angle of less than 360 degrees. The dial lock can be quickly unlocked only by alternately rotating the dial in the forward and reverse directions, and the convenience of the unlocking operation is remarkably excellent.

In particular, the unlocking recess is also notched on the circumferential surface of the drive plate which rotates integrally with the dial knob.
Even if you rotate the dial knob 360 degrees,
The unlocking recesses in all the lock plates correspond only at one regular place, and the risk of unlocking at several places by erroneous correspondence is blocked by the drive plate, so to speak. There is no worry about lowering the locking performance.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the assembled state of a safe dial lock composed of a total of four locking plates for the sake of comparison with the conventional FIG. (21) is a dial knob, and (22) is a dial shaft connected to and integrated with the center of rotation of the dial shaft via a notch pin (23) and the like.
4) is processed into a stepped form.

Reference numeral (25) denotes a first bearing cylinder for supporting the front side of the dial shaft (22), which extends for a length penetrating an opening / closing door (M) of a safe (not shown). The face plate (26) integrated by caulking to the part is screwed to the front surface of the door (M) with a tapping screw (27) or the like.
It will be attached and fixed. (28) is a face plate (26)
And a rotary spring is applied to the dial knob (21).

A second bearing cylinder (29) is connected and fixed via a key (30) to a rear end of the first bearing cylinder (25) exposed from the opening / closing door (M). The rear side including the small diameter shaft portion (24) of the shaft (22) is in charge. 2 and 3, the rear end of the second bearing cylinder (29) is also provided with a step having a small-diameter tube portion (31) corresponding to the small-diameter shaft portion (24) of the dial shaft (22). The front end of the second bearing cylinder (29) is formed to have a large diameter as a spring retainer (32).

A driving plate (33) is fitted from the rear to the small-diameter shaft portion (24) so as to be able to rotate integrally with the dial shaft (22). It is shaped like a cylinder hat, and the unlocking recess (35) as shown in FIGS. 4 and 5 is cut out on the circumferential surface of the flange (34) projecting radially from the front end. In addition, a drive gear (36) is engraved on the inner peripheral surface of the body of the drive plate (33). Reference numeral (37) denotes a retaining ring for the drive plate (33) with respect to the dial shaft (22).

Reference numeral (38a) is a preceding locking plate arranged in parallel with the position immediately before the driving plate (33). As is apparent from FIGS. 6 to 9, the projecting flange portion (34) of the driving plate (33). ) And a rigid synthetic resin hub (40) fitted to the center of the overhang flange (39) of the same shape metal plate.
No. 0) is loosely fitted to the small diameter cylindrical portion (31) of the second bearing cylinder (29).

(41a) is the preceding rock plate (38a)
, The unlocking notch notched in the circumferential surface of the overhanging flange portion (39), and the forwardly engaging protruding projection (42) protruding from the plate surface of the overhanging flange portion (39). And can be engaged with a rearwardly engaging projection of a first intermediate locking plate described later.

The hub portion (40) of the preceding locking plate (38a) also has the driving plate (33), as apparent from FIG.
It has a smaller similar shape than its drive plate (3
A driven gear (43) is engraved on the outer peripheral surface of the hub (40) facing the inner peripheral surface of the trunk of (3).

That is, the small-diameter driven gear (43) attached to the preceding rock plate (38a) and the driving plate (3
The large-diameter drive gear (36) attached to 3) is opposed to each other under an inner / outer positional relationship, and one idle gear (44) is provided.
Are engaged so as to be able to rotate in opposite directions through the shaft. In addition, the driving gear (36) and the driven gear (4)
The meshing ratio with 3) is set to be 3: 1, and the driving plate (33) is set to 36 by the dial knob (21).
If it is rotated 0 degrees (one rotation), the preceding lock plate (38a)
Rotates three times.

(45) is disposed between the front and rear of the hub portion (40) of the preceding locking plate (38a) and the driving plate (33), and extends from the rear end of the second bearing cylinder (29). A fixed plate protruding integrally in the radial direction, (46) is an idle gear shaft protruding forward from the fixed plate (45),
Thus, the idle gear (44) is rotatably supported.

Further, (38b) and (38c) correspond to the first and second parallel parts which are arranged in parallel from the preceding locking plate (38a) to the front.
The intermediate locking plate (38d) is the second intermediate locking plate (3d).
8c) is a trailing rock plate arranged in parallel with the position immediately before 8c), and these rock plates (38b) (38c) (38d) have a total of 3
Each of the sheets is made of a circular metal plate having the same diameter as the overhanging flange portion (39) of the preceding lock plate (38a), and each of the circumferential surfaces thereof is provided with an unlocking recess (41b) (41c) (41c).
d) and the second bushing (29)
Everything is freely rotatably fitted.

In addition, by receiving the rotational force from the preceding rocking plate (38a), it can be sequentially rotated from the rear to the front. That is, as shown in FIGS. 12 to 14, a forward engaging projection (47) and a rearward engagement projection (48) for swiveling protrude from the plate surface of the first intermediate locking plate (38b). , Rearwardly engaging projections (4
8) can be engaged with the forward engaging projections (42) of the preceding locking plate (38a).

Also, as shown in FIGS. 15 to 17, the front engagement protrusion (49) and the rear engagement protrusion (50) for swiveling protrude from the plate surface of the second intermediate locking plate (38c). The rearwardly engaging projections (50) can engage with the forwardly engaging projections (47) of the first center locking plate (38b).

Reference numeral (51) denotes a rearwardly engaging projection for protruding from the plate surface of the following locking plate (38d) as shown in FIGS. 18 and 19, which is the second intermediate locking plate (38). 38c) can be engaged with the forward engagement projection (49), and the dial knob (21) can be rotated 360 degrees (1).
When rotated, the driving gear (36) of the driving plate (33) and the driven gear (43) of the preceding locking plate (38a).
Then, it rotates until it reaches the following rock plate (38d).

In this case, a total of four lock plates (38)
a) Engagement protrusion (42) protruded from (38d)
(47), (48), (49), (50), and (51) are in a distribution state in which the rotation angle position from each of the unlocking recesses (41a) to (41d) changes in phase. It goes without saying that the memory value for the lock is predetermined. If the protruding positions of the engaging projections (42), (47) to (51) are changed, the memory value of the dial lock is also changed, and the dial lock having different operation keys is finished despite the same type. It is.

(52) The above-mentioned locking plates (38a) to (3)
8d), a total of three spacers interposed between adjacent front and rear portions, all of which are non-rotatably fitted to the second bearing cylinder (29). (53) is the second bushing (2)
9) a compression coil spring wound around the front and rear of the spring retainer (32) and the succeeding rock plate (38d), and the lock plates (38a) to (38).
An appropriate pressing force is applied to d) as a whole. Reference numeral (54) denotes a retaining ring directed rearward of the first intermediate locking plate (38b).

The unlocking procedure of the dial lock configured as described above is as follows. That is, FIG. 20 shows the locked state of the dial lock as an exploded view. In the unlocking operation, the dial knob (21) is first turned clockwise from a predetermined reference value. By rotating by 1/3, the leading lock plate (38a) is rotated 360 degrees (one rotation) through the engagement of the drive gear (36) and the driven gear (43), and the leading lock plate (38a) is rotated. Is engaged with the rearwardly engaging projection (48) of the first intermediate locking plate (38b) adjacent thereto.

Then, as shown in FIG. 21, the dial knob (21) is continuously rotated by 1/3 in the same direction, so that the preceding lock plate (38a) and the first intermediate lock plate (38b) are 360 together. Of the first intermediate locking plate (38b).
7) is engaged with the rearward engaging projection (50) of the second intermediate locking plate (38c) adjacent thereto.

Thereafter, as shown in FIG. 22, the dial knob (21) is further rotated by 1/3 in the same direction to thereby make the preceding lock plate (38a) and the first and second intermediate lock plates (38b) (38c). ) Are rotated together by 360 degrees (one rotation), and the forward engaging projections (49) of the second intermediate locking plate (38c) are brought into contact with the succeeding locking plate (3).
8d) Engage with the rearwardly engaging projection (51), continue to rotate by a fixed angle of less than 360 degrees up to a predetermined memory value, and then unlock the concave of the locking plate (38d). The notch (41d) is kept at a fixed position in an upward state as shown in FIG.

Then, by rotating the dial knob (21) in the counterclockwise direction opposite to the above as shown in FIG. 23, the preceding lock plate (38a) is rotated twice, and the first intermediate lock plate (38b) is rotated. ) Is rotated once, the forward engaging projections (47) of the first intermediate locking plate (38b) and the rearward engaging projections (50) of the second intermediate locking plate (38c) adjacent thereto. In order to engage, the second intermediate lock plate (38c) is rotated by a predetermined angle of less than 360 degrees to a predetermined memory value in that state.
Of the unlocking recess (41c) is made to correspond to that of the trailing lock plate (38d) stopped earlier.

Next, the dial knob (21) is rotated clockwise as shown in FIG.
When a) is rotated one turn, the forward engaging projection (42) of the preceding locking plate (38a) is engaged with the rearward engaging projection (48) of the first intermediate locking plate (38b) adjacent thereto. Therefore, the rotation is continued by a fixed angle of less than 360 degrees from that state to a predetermined memory value, and the unlocking recess (41b) of the first intermediate locking plate (38b) is removed.
An upward state corresponding to those of the trailing rock plate (38d) and the second intermediate rock plate (38c) stopped earlier is maintained.

Then, as shown in FIG. 25, the dial knob (21) is again rotated counterclockwise by a predetermined angle of less than 360 degrees to a predetermined memory value, and the leading lock plate (38a) is rotated. If the unlocking recesses (41a) of the above are matched with those of the following locking plate (38d) and the first and second intermediate locking plates (38b) (38c), all the locking plates (38a)- Into the unlocking recesses (41a) to (41d) opening at (38d), the dial lock is unlocked so as to accept the locking nail (A).

That is, a total of four locking plates (38a) to
(38d) is in a side-by-side installation state in which adjacent ones can rotate with each other, and is attached to a drive gear (36) attached to a drive plate (33) that rotates integrally with the dial knob (21) and to a preceding lock plate (38a). And the driven gear (43) are engaged and rotated at a ratio of 3: 1. Therefore, the number of rotations of the dial knob (21) is one (3).
(60 ° rotation) is sufficient, and the unlocking operation can be performed extremely efficiently and lightly if only a predetermined memory numerical value is stored.

In this regard, in the illustrated embodiment, the description has been given of the dial lock including the total of four locking plates (38a) to (38d) including the first and second intermediate locking plates (38b) and (38c). It is sufficient that at least one plate (38b) (38c) is provided, and when forming a dial lock from a total of three locking plates including one of the plates, the drive gear (36) and the driven gear (43) are used. When the gear ratio is set to 2: 1 and, for example, a total of five locking plates are used,
Similarly, the gear ratio may be set to 4: 1. By modifying according to such a rule, the intended object of the present invention can be achieved.

The above-mentioned locking plates (38a) to (38d)
At least one unlocking notch (41a) to (4a)
Needless to say, if 1d) is directed to a state that does not correspond to the other, the dial lock is locked.

[0042]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, the dial lock of the present invention slides freely around the dial shaft (22) rotated from the front by the dial knob (21) and the rear end of the dial shaft (22). A leading rocker plate (38a), at least one intermediate rocker plate (38b) (38c) and a trailing rocker plate (38d), which are freely and freely inserted in a side-by-side relationship with each other. Dial axis (2
2) a driving plate (33) which is fitted in a side-by-side state so as to be able to rotate integrally with the rear end portion, and which is adjacent to the preceding locking plate (38a);

The circumferential surface of each of the locking plates (38a) to (38d) and the driving plate (33) is completely matched with each other so that the locking claw (A) can receive the unlocking recess (3).
5) Notches (41a), (41b), (41c), and (41d), and a large-diameter drive gear (3
6), a small-diameter driven gear (43) is attached to the preceding locking plate (38a) adjacent thereto, and the two gears (36) and (43) are moved in opposite directions through the intermediation of an idle gear (44). And all the lock plates (38a) through one rotation of the dial knob (21).
Since (38d) is meshed under the entrained ratio, the problem of the prior art described with reference to FIGS. 26 to 32 can be completely improved, and there is an effect that the unlocking operation can be performed extremely easily.

That is, according to the first and second aspects of the present invention, the dial knob (21) is rotated, for example, 360 degrees clockwise (one rotation) from a predetermined reference value.
Then, the concave part (41) for unlocking the trailing lock plate (38d) is used.
d) in a fixed position, then dial dial (21)
Counterclockwise up to a predetermined memory value, 3
By rotating by a fixed angle of less than 60 degrees, the unlocking recesses (41b) and (41b) of the intermediate locking plates (38b) and (38c) are unlocked.
c) is made to correspond to that of the following locking plate (38d), and the dial knob (21) is further rotated clockwise to a predetermined memory value by a fixed angle of less than 360 degrees, Unlocking the dial lock by matching the unlocking recess (41a) of the preceding lock plate (38a) with those of the following lock plate (38d) and the intermediate lock plates (38b) (38c). Can be.

By one rotation of the dial knob (21), all the lock plates (38a) (38b) (38)
c) Since (38d) follows, its locking plate (38)
Only the memory values corresponding to the number of sheets a) to (38d) are stored, and each of the lock plates (38a) to (38d) is
As long as the dial lock is alternately rotated in the forward and reverse directions by a fixed angle of less than 60 degrees, the dial lock can be quickly unlocked, and the convenience of the unlocking operation is remarkably excellent.

The unlocking recess (3) is also provided on the circumferential surface of the drive plate (33) which rotates integrally with the dial knob (21).
Since 5) is cut off, the dial knob (2)
Even if the 1) is rotated 360 degrees, the unlocking recesses (35) in all the lock plates (38a) to (38d) are used.
(41a) (41b) (41c) (41d) are regular 1
The risk of unlocking, which corresponds only at several locations and erroneously matches at several locations, is blocked by the drive plate (33), so that there is no concern that the locking performance will be reduced. .

In particular, if the configuration of claim 3 is adopted,
A driving plate (33) is adjacent to the driving plate (38).
a) a large-sized drive gear (36) engraved on the inner peripheral surface of the body of the drive plate (33), which has a cylinder hat shape surrounding the hub (40) of (a); Since the driven gear (43) having a small diameter engraved on the outer peripheral surface is meshed and rotated under the above-mentioned ratio through one idle gear (44), a commercially available safe or various It can be incorporated into a storage of goods and the like in a compact and compact manner without any modification, and has the effect of increasing versatility in implementation.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an assembled state of a dial lock according to the present invention.

FIG. 2 is a front view showing a second bearing cylinder extracted from a dial shaft.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a front view showing a drive plate extracted.

FIG. 5 is a sectional view taken along line 5-5 in FIG. 4;

FIG. 6 is a front view showing a preceding rock plate extracted.

FIG. 7 is a sectional view taken along line 7-7 of FIG. 6;

FIG. 8 is a rear view showing the hub portion of the preceding rock plate extracted.

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8;

FIG. 10 is a front view showing an extracted idle gear.

FIG. 11 is a sectional view taken along line 11-11 of FIG. 10;

FIG. 12 is a front view showing a first intermediate locking plate extracted.

FIG. 13 is a bottom view of FIG.

FIG. 14 is a sectional view taken along line 14-14 of FIG. 12;

FIG. 15 is a front view showing a second intermediate locking plate extracted.

16 is a bottom view of FIG.

FIG. 17 is a sectional view taken along line 17-17 of FIG. 15;

FIG. 18 is a front view showing a trailing rock plate extracted.

FIG. 19 is a sectional view taken along line 19-19 of FIG. 18;

FIG. 20 is an explanatory view showing the unlocking action of the dial lock as the disassembled state of the lock plate.

FIG. 21 is an explanatory view showing an unlocking action process following FIG. 20;

FIG. 22 is an explanatory view showing the unlocking operation process following FIG. 21.

FIG. 23 is an explanatory view showing an unlocking action process following FIG. 22;

FIG. 24 is an explanatory view showing an unlocking action process following FIG. 23;

FIG. 25 is an explanatory view showing a completed state of the unlocking operation following FIG. 24;

FIG. 26 is a side sectional view showing a conventional dial lock in an assembled state.

FIG. 27 is an explanatory view showing the unlocking operation of FIG. 26 as a disassembled state of the lock plate.

FIG. 28 is an explanatory view showing an unlocking action process following FIG. 27;

FIG. 29 is an explanatory view showing an unlocking action process following FIG. 28;

FIG. 30 is an explanatory view showing an unlocking action process following FIG. 29;

FIG. 31 is an explanatory view showing the unlocking action process following FIG. 30;

FIG. 32 is an explanatory view showing a completed state of the unlocking operation following FIG. 31;

[Explanation of symbols]

 (21) ・ Dial knob (22) ・ Dial shaft (33) ・ Drive plate (35) ・ Unlocking recess (36) ・ Drive gear (38a) ・ Primary lock plate (38b) ・ First intermediate lock plate (38c)-Second intermediate locking plate (38d)-Trailing locking plate (40)-Hub (41a)-Unlocking recess (41b)-Unlocking recess (41c)-Unlocking recess (41d) ・ Unlocking for unlocking (43) ・ Driving gear (44) ・ Idle gear (A) ・ Lock claw

Claims (3)

(57) [Claims] 1. A dial shaft (22) that is rotated from the front by a dial knob (21), and the dial shaft (22) is freely rotatable and adjacent to each other in the vicinity of the rear end thereof. A leading rocker plate (38a), at least one intermediate rocker plate (38b) (38c) and a trailing rocker plate (38d) fitted in a rotatable side-by-side arrangement, also to the rear end of the dial shaft (22). The preceding locking plate (38a) and a driving plate (33) fitted in a side-by-side state so as to be able to rotate integrally, and each of the locking plates (38a) to (38d) and the driving plate (3).
3) The unlocking recesses (35) and (41) of the locking claw (A) are acceptable by completely corresponding to the circumferential surface of (3).
a) Notch (41b), (41c) and (41d), and a large-diameter drive gear (36) on the drive plate (33) and a small-diameter driven gear on the preceding rock plate (38a) adjacent thereto. (43), and both gears (36) (4)
3) so that it can be rotated in the opposite direction by the intermediary of the idle gear (44), and one of the dial knobs (21).
A dial lock characterized in that all the lock plates (38a) to (38d) are engaged with each other by rotation so as to rotate. 2. Lock plates (38a) (38b) (38c)
The dial lock according to claim 1, wherein (38d) is a total of four sheets, and a rotation ratio between the drive gear (36) and the driven gear (43) is set to be 3: 1. 3. An outer peripheral surface of a hub portion (40) of a preceding lock plate (38a) is engraved as a driven gear (43), and a drive plate (33) is enclosable cylinder hat of the hub portion (40). A drive gear (36) is engraved on the inner peripheral surface of the body portion, and a single idle gear () is interposed between the drive gear (36) and the driven gear (43). The dial lock according to claim 1, wherein step (44) is interposed.