JP3020892B2 - Disc tumbler type locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a disk tumbler which is urged by a compression coil spring so that a locking end portion is engaged with an inner peripheral surface receiving portion of an outer cylinder. The present invention relates to a disk tumbler-type locking device in which a lock end of a disk tumbler is immersed in an inner cylinder side by a key pile of a key plate inserted into the through hole.

[0002]

2. Description of the Related Art In a conventional disk tumbler-type lock device, all components including a main part such as an outer cylinder and an inner cylinder are press-processed parts, and the number of parts is large. Because of its complexity, it has not been easy to reduce assembly costs. In addition, since the pressurized parts are assembled by fitting and crimping, the mechanical strength is low and the resistance to violent destruction is low.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make the main constituent parts die-cast, thereby reducing the number of parts and reducing the manufacturing cost, and assembling with high mechanical strength can be performed efficiently. A disk tumbler locking device is provided.

[0004]

The disk tumbler-type locking device of the present invention will be described below with reference to the reference numerals in the accompanying drawings. A tumbler receiving groove 5 diametrically penetrating through a die-casting inner cylinder 4 rotatably housed in the outer cylinder 1 is provided by partitioning the tumbler receiving groove 5 with a partition wall 43 along the axial direction. A plurality of spring receiving grooves 9 and 10 are provided in the front and rear surfaces of the upper part of each partition wall portion 43 in a diametrical direction, and a pair of left and right pin receiving holes 13 and 14 are formed in the front wall portion 11 of the inner cylinder 4. Are provided in the axial direction, and a pair of left and right pin receiving holes 17 and 18 are provided in the rear wall portion 15 of the inner cylinder 4 in the axial direction.

[0005] A pair of left and right pin receiving holes 13 of the inner cylinder 4,
The front and rear ends of the guide pins 20 are inserted into the inner tube 4 and the guide pins 20 are axially arranged and fixed in the inner cylinder 4, and the first and second spring receiving grooves 9 and 10 facing the front and rear of the adjacent partition walls 43 and 43, respectively. 1
A plurality of first disc tumblers 22 are fitted into the tumbler receiving groove 5 so that the spring 21 is fitted therein, and the locking end 23 is disengaged from the pair of left and right locking receiving portions 2. The second disk tumbler 24 is fitted in the tumbler receiving groove 5 in a direction opposite to the first disk tumbler 22 so that the locking end 25 is disengaged from the locking receiving portion 3.

The second spring 26 is fitted into the spring receiving grooves 9 and 10 facing the front and rear of the adjacent partition walls 43 and 43 from the side opposite to the first spring 21, and the spring support projections 27 of the first disk tumbler 22. While pressing the second spring 26 and the second spring 26 in the diametric direction with the spacer plate 28 which is long in the axial direction, the set pin 7 is
Into the other pair of left and right pin receiving holes 14, 18,
The first spring 21 is compressed between the guide pin 20 and the spring support protrusion 27 of the first disk tumbler 22, and the second spring 2 is compressed.
6 is compressed between the spacer plate 28 contacting the set pin 7 and the spring support projection 29 of the second disk tumbler 24. Keyhole 3 into which key 30 is inserted into front wall 11 of inner cylinder 4
1 is provided, a key hole 44 into which the key 30 is inserted is provided in the center of the partition wall 43, and a passive hole 33 cooperating with the key peak 30a on the edge end surface of the key 30 is provided in the center of the first disc tumbler 22.
And a passive hole 34 is provided in the center of the second disk tumbler 24 so as to cooperate with a key ridge 30b on another edge end surface of the key 30.

The key 30 is moved from the keyhole 31 of the inner cylinder 4 to the partition wall 4.
3 keyhole 44, passive hole 3 of first disc tumbler 22
3. When inserted into the passive hole 34 of the second disk tumbler 24, the key ridges 30a, 30b push the hole edges of the passive holes 33, 34, so that the first disk tumbler 22 and the second disk tumbler 24 face the inner cylinder 3 side. Gravitate. The locking end 23 of the first disk tumbler 22 escapes from the lock receiving portion 2 of the outer cylinder 1, and the locking end 25 of the second disk tumbler 24 escapes from the lock receiving portion 3 of the outer cylinder 1. , Outer cylinder 1
Of the inner cylinder 4 is released, and the inner cylinder 4 becomes rotatable.

The key 30 is inserted into the keyhole 31 of the inner cylinder 4 and the partition 43.
Key hole 44, passive hole 33 of first disc tumbler 22,
When the second disk tumbler 24 is extracted from the passive hole 34 of the second disk tumbler 24, the first disk tumbler 22 and the second disk tumbler 24 move toward the outer cylinder 1 by the urging of the first spring 21 and the second spring 26. The locking end 23 of the first disk tumbler 22 engages with the locking receiving portion 2 of the outer cylinder 1, and
The engagement of the locking end portion 25 of the disk tumbler 24 with the locking receiving portion 3 of the outer cylinder 1 causes the inner cylinder 4 to be restrained again with respect to the outer cylinder 1.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a lock case 35 is fitted to the outside of an outer cylinder 1 and is fixed by a spring pin 36. An axial projection 38 on the inner surface of the lock case 35 is fitted into the axial groove 37 on the outer surface of the outer cylinder 1.
The lock case 35 cannot rotate with respect to the outer cylinder 1.
A receiving cylinder 39 is fitted in the lock case 35 to cover the spring pin 36. A guard plate 40 is rotatably fitted to the front surface of the outer cylinder 1 so as to hide the front keyhole 31 of the inner cylinder 4. A key insertion hole 41 is provided in the guard plate. A keyhole 42 is provided through the rear wall portion 15 of the inner cylinder 4.

The lock case 35 is inserted into the receiving hole 8 of the mounting panel 6 from the front side, and is fixedly fastened to the mounting panel 6 by a nut 16 screwed to the thread portion 12 at the rear.
An interlocking body 19 is fixed to the rear part of the inner cylinder 4 by a fixing ring 32, and a stopper plate or a switch operation plate is connected to the interlocking body 19 according to the application. 1st disk tumbler 2
The second and second disc tumblers 24 are prepared five by five, and are alternately inserted into the inner cylinder 4 in opposite directions.

[0011]

The disk tumbler-type locking device of the present invention configured as described above has an outer cylinder 1, an inner cylinder 4, a set pin 7, a guide pin 20, a first spring 21, a first disk tumbler 22, a It is composed of a two-disk tumbler 24, a second spring 26, and a spacer plate 28, and has a relatively small number of parts and a simplified structure. Since the attached inner cylinder 4 is made of die-casting, a lock device which can be manufactured and assembled at lower cost than the conventional device, has high strength, and has high resistance to violent destruction can be provided.

A tumbler receiving groove 5 is provided in the inner cylinder 4 by a partition wall 43, and the tumbler receiving grooves 5 are arranged in the axial direction. A pair of left and right pin receiving holes 13 and 14 are provided in a front wall portion 11 of the inner cylinder 4. Rear wall 15
A pair of left and right pin receiving holes 17 and 18 are provided, a guide pin 20 is inserted into one of the pair of left and right pin receiving holes 13 and 17, and a set pin 7 is inserted into the other pair of left and right pin receiving holes 14 and 18. Therefore, the insertion direction of the first disk tumbler 22 and the second disk tumbler 24 inserted into the tumbler receiving groove 5 is not limited to one direction, and a part or all of the plurality of disk tumblers are horizontally inverted. Various key differences can be created by insertion.

After the first spring 21, the first disk tumbler 22, the second disk tumbler 24, and the second spring 26 are sequentially inserted into the spring receiving grooves 9, 10 and the tumbler receiving groove 5, respectively, the first disk tumbler 22 spring support protrusion 27
While pressing the second spring 26 and the second spring 26 in the diametric direction with the spacer plate 28, the set pin 7 is pushed into the predetermined pin receiving holes 14, 18 of the inner cylinder 4.
Inserted, it is compressed between the first spring 21 and the guide pin 20 and the spring support projection 27 of the first disc tumbler 22,
Spacer plate 28 that abuts second spring 26 on set pin 7
Since the compression is performed between the spring support projection 29 of the second disk tumbler 24 and the second disk tumbler 24, anyone can easily and efficiently assemble the lock device, and the assembly cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a disk tumbler-type lock device according to an embodiment of the present invention in a key-removed state.

FIG. 2 is a plan view of the lock device in a key-removed state.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

FIG. 6 is a sectional view taken along line DD of FIG. 3;

FIG. 7 is a sectional view taken along line EE of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Lock receiving part of outer cylinder 3 Lock receiving part of outer cylinder 4 Inner cylinder 5 Tumbler receiving groove 6 Mounting panel 7 Set pin 8 Mounting panel receiving hole 9 Partition wall spring receiving groove 10 Partition wall Spring receiving groove 11 Inner cylinder front wall 12 Lock case screw thread 13 Front wall pin receiving hole 14 Front wall pin receiving hole 15 Inner cylinder rear wall 16 Fixing nut 17 Rear wall Pin receiving hole 18 Pin receiving hole in rear wall portion 19 Interlocking body 20 Guide pin 21 First spring 22 First disk tumbler 23 Locking end of first disk tumbler 24 Second disk tumbler 25 Locking end of second disk tumbler Part 26 Second spring 27 Spring support projection of first disk tumbler 28 Spacer plate 29 Spring support projection of second disk tumbler 30 Key 31 Keyhole in front wall of inner cylinder 32 Fixing ring 33 First disk tan Passive hole of the disk 34 Passive hole of the second disc tumbler 35 Lock case 36 Spring pin 37 Axial groove of the outer cylinder 38 Axial projection of the lock case 39 Receiving cylinder 40 Guard plate 41 Key insertion hole of guard plate 42 Inner cylinder Keyhole in rear wall 43 Partition wall of inner cylinder 44 Keyhole in partition wall

Claims (1)

(57) [Claims] A pair of left and right lock receiving portions (2, 3) are provided on the inner peripheral surface of a die-cast outer cylinder (1) so as to be diametrically opposed to each other. A plurality of tumbler receiving grooves 5 penetrating in the diameter direction are partitioned by a partition wall portion 43, and a plurality of the tumbler receiving grooves 5 are arranged side by side along the axial direction. A pair of left and right pin receiving holes 13 and 14 are provided in the front wall portion 11 of the inner cylinder 4 in the axial direction, and a pair of left and right pin receiving holes 17 and 18 are formed in the rear wall portion 15 of the inner cylinder 4 in the axial direction. The front and rear ends of the guide pin 20 are inserted into the pair of left and right pin receiving holes 13 and 17 of the inner cylinder 4 to dispose and fix the guide pin 20 in the inner cylinder 4 in the axial direction. The first spring 21 is fitted into the spring receiving grooves 9, 10 facing the front and rear of the first and second 43, and is locked to one of the pair of left and right lock receiving portions 2. A plurality of first disc tumblers 22 are fitted into the tumbler receiving grooves 5 so that the end portions 23 are engaged and disengaged, and the second disc tumbler 22 is engaged and disengaged with the other pair of left and right lock receiving portions 3. The disk tumbler 24 is fitted in the tumbler receiving groove 5 in the opposite direction to the first disk tumbler 22, and the second spring 26 is inserted into the spring receiving grooves 9, 10 facing the front and rear of the adjacent partition walls 43, 43. 21 and the spring support protrusion 2 of the first disc tumbler 22.
7 and the second spring 26 are diametrically pushed by an axially long spacer plate 28, and the set pin 7 is inserted into the other pair of left and right pin receiving holes 14 and 18 of the inner cylinder 4, and the first spring 21
Is compressed between the guide pin 20 and the spring supporting projection 27 of the first disk tumbler 22, and the second spring 26 is moved between the spacer plate 28 that contacts the set pin 7 and the spring supporting projection 29 of the second disk tumbler 24. The keyhole 31 into which the key 30 is inserted is provided in the front wall 11 of the inner cylinder 4, the keyhole 44 into which the key 30 is inserted is provided in the center of the partition wall 43, and the first disk tumbler 22 A passive hole 33 cooperating with a key peak 30a on the edge end surface of the key 30 is provided in the center of the key 30.
A disk tumbler-type locking device having a central portion of a disk tumbler 24 provided with a passive hole 34 cooperating with a key peak 30b at another edge end surface of the key 30.