JPH11131874A - Dial lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make relatively simple a structure around a shaft member holding a dial and to allow a user to know the identification numbers of the dial through an external operation even if he forgets the numbers. SOLUTION: A dial lock includes a control member rotating a hook member 16 engageable with and disengageable from a locker-main-body-side engaging member, a dial 23 mounted around a support shaft 19 via an intermediate sleeve 20, a moving shaft 21 lockable to and unlockable from the outer peripheral surface of the intermediate sleeve 20, and a movable plate 22 which moves as the control member rotates. When a specific number on the dial is not a reference position, the rear end 21B of the moving shaft 21 is engaged in a hole 58 in the movable plate 22 to regulate the movement of the movable plate 22; when the specific number on the dial 23 is in the reference position, the rear end 21B is disconnected from the hole 58 to permit the movement of the movable plate 22, with the rotation of the control member controlled to allow the operation of unlocking the hook member 16. The position of the rear end 21B of the moving shaft 21 can be detected with a gauge, and dial numbers for unlocking can be known from the insertion depth of the gauge.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dial lock applicable to a locker, a storage, a safe, or the like.

[0002]

2. Description of the Related Art Conventionally, a door such as a locker is provided with a dial lock on a free end side thereof, and a hook constituting a part of the dial lock is detachably engageable with an engaging member of a locker body on a fixed side. The configuration was adopted. As a known dial lock, for example, as shown in Japanese Patent Publication No. 6-74685, an operation shaft which can be advanced and retracted in the axial direction by rotation of an operation member located on the front side of a door, and an outer periphery of the operation shaft And a dial arranged via a bush,
The inner peripheral surface of the dial and the outer peripheral surface of the bush, and the outer peripheral surface of the operating shaft and the inner peripheral surface of the bush are provided so as to be freely disengageable from each other, and the operating shaft is displaced between an unlocked position and a locked position. Have been.

[0003]

However, in such a configuration, there is a disadvantage that the structure for engaging the members is complicated, and the assembly is very troublesome. In particular, in this type of dial lock, it is preferable to simplify the engagement structure around the axis in order to impart durability, but the proposed structure does not sufficiently meet such a demand. Can't respond.

In the case of a dial lock, no particular inconvenience is caused in unlocking as long as a specific person who uses the dial lock stores a specific number for unlocking. However, recently, in order to further improve the security of the dial lock, a configuration is adopted in which the specific number of the unlock position can be changed at any time. Therefore, there is another inconvenience that the newly specified number is easily forgotten due to a memory difference due to the change of the number. Therefore, even in such a case, the appearance of a dial lock having a structure in which a newly set number can be easily known is expected.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to simplify a combination structure around a shaft member holding a dial and to forget a sign including a specific number for unlocking. It is an object of the present invention to provide a dial lock which can easily recognize this even in a case.

[0006]

In order to achieve the above object, a hook member which can be disengaged from a fixed engaging member, and a rotatable operation for rotating and displacing the hook member between a locked position and an unlocked position. A member, a tubular member arranged on an outer periphery of a predetermined support shaft and provided so as to be axially movable by rotation of the operating member, and a tubular member arranged rotatably on the outer periphery of the tubular member and At least one dial provided to be detachable from the member, wherein the engagement member and the hook member allow rotation of the operation member when a specific symbol of the dial is set at a predetermined reference position. In the dial lock capable of disengaging the engagement state, the cylindrical member is disposed in a direction substantially perpendicular to the axial direction of the cylindrical member, is urged toward the cylindrical member, and has a distal end on the outer peripheral surface of the cylindrical member. Can be disengaged An advancing and retreating shaft provided, and a movable plate provided so as to be movable in a direction substantially parallel to the axis of the tubular member with the rotation of the operation member, and a specific symbol of the dial is set at a position other than a reference position. When this is done, the rear end of the advancing / retreating shaft becomes a position for restricting the movement of the movable plate, and when set to the reference position, it can be displaced to a position allowing the movement of the movable plate to restrict the rotation of the operating member. , Is adopted. With such a configuration, the rotation of the dial can be restricted by the reciprocating shaft disposed outside the tubular member, and the engagement structure can be simplified and the assembly can be facilitated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a dial lock according to the present invention, a groove is formed in an outer peripheral surface portion of the cylindrical member, and when the tip of the advance / retreat shaft engages with this groove, the advance / retreat shaft moves to the movable plate. It is preferable that the movable plate is located at a position where the movable plate is allowed to move, and is located at a position where movement of the movable plate is restricted when the movable plate comes off the groove. Thus, the forward and backward axes are
The tip can follow the shape of the peripheral surface of the tubular member so as to be able to advance and retreat in the axial direction, and the engagement and disengagement between the tubular member and the reciprocating shaft can be performed extremely smoothly.

[0008] Further, as an aspect of regulating the movement of the movable plate, there is exemplified a configuration in which a hole is formed in the movable plate, and the rear end of the advance / retreat shaft is inserted into the hole to regulate the movement of the movable plate. it can. According to such a configuration, when the reciprocating axis enters the hole of the movable plate, the reciprocating axis has a positional relationship that traverses the movement trajectory of the movable plate. Regulations can be enforced.

Further, a position detecting surface provided with a position detecting hole located substantially on the same axis as the reciprocating shaft is provided outside the movable plate, and a predetermined gauge is inserted into the position detecting hole to move the reciprocating shaft. Can be visually confirmed, whereby even if the user forgets the specific symbol on the dial, he can easily know it. In this case, the position detection surface may be configured using a surface of a cover body surrounding the outside of the plate,
This enables the effective use of existing structural components.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a dial lock according to this embodiment, and FIG. 2 is a perspective view schematically showing the internal structure of the dial lock. In these drawings, a dial lock 10 includes a case 13 including a cover body 11 and a front cover 12 located on the front side of the cover body 11, an operation member 15 exposed on the front cover 12, and a rear of the operation member 15. A hook member 1 connected to the end and detachable from a fixed-side engaging member of a rocker or the like (not shown).
6, an inner case 18 disposed in the internal space of the cover main body 11 and having an opening 18A on the front side fixed so as to face the back side of the cover 12, and held on both left and right sides of the inner case 18. Support shaft 19, four dials 23 mounted respectively via four intermediate sleeves 20 as cylindrical members rotatably mounted around the support shaft 19, and the intermediate sleeve Advancing / retreating shafts 2 arranged in a direction substantially orthogonal to the axial direction of the shaft 20
1 and a movable plate 22 arranged outside the inner case 18.

The cover body 11 is provided in a substantially rectangular parallelepiped shape with its front side opened, and the opened portion is closed by a front cover 12. At this time, the dial lock 10 is fixed by sandwiching a forming edge of a lock mounting hole formed in a door such as a locker (not shown) between the front end surface of the cover body 11 and the back surface of the front cover 12.

The operation member 15 has an operation knob 25 which is exposed to the front through a circular hole 12A formed at the center of the left side of the front cover 12, and is connected to the operation knob 25 and has the hook at the rear end. A cylinder portion 26 to which the member 16 is connected, and which is provided rotatably in the circumferential direction;
The rotor 2 protruding from the outer peripheral portion of the cylinder portion 26
7, a rotor pin 28 connected to the cylinder 2
And an outer sleeve 29 for receiving the outer sleeve 6. Here, a mounting plate 30 is provided on the rear end side of the cylinder portion 26 and the outer sleeve 29, and a bush 32 is fixed to the front side from the mounting plate 30. Then, a bolt (not shown) is inserted from the rear end side of the bush 32, and the bolt is tightened on the inner surface side of the front cover 12, whereby the operating member 15 is moved.
Is fixed.

The support shaft 19 is supported by plate-like pieces 34 held on the left and right inner surfaces of the inner case 18, respectively. On the outer periphery of the support shaft 19, four intermediate sleeves 2
0 are fitted on the same axis so as to be movable in the axial direction so that the dial 23 can rotate in the circumferential direction of the intermediate sleeve 20 and can be disengaged from the intermediate sleeve 20 via the intermediate sleeve 20. It is installed. Intermediate sleeve 2
2 is fixed to a left end in FIG. 2 of the transmission member 36 which is a one-piece member branched into two branches. The transmission member 36 is arranged such that the distal end of the transmission member 36 contacts the cylinder 26 of the operation member 15. At this time, on the outer peripheral surface portion of the cylinder portion 26,
A wedge-shaped recess 26A (see FIG. 4) is formed, and the tip of the transmission member 36 is received in the recess 26A when the hook member 16 is in the locked position in which the hook member 16 is folded down in the horizontal direction. On the other hand, when the hook member 16 is in the unlocked position in the upright position, the transmission member 36 is pushed into the inner case 18 according to the peripheral surface shape of the cylinder portion 26, and the intermediate sleeve 20 connected to the transmission member 36 is shown in FIG. It can be moved to the middle right. In addition, since the transmission member 36 is provided in a shape extending through the slit hole 34A formed in the plate-shaped piece 34, the movement in the left-right direction can be performed without any trouble. Further, in FIG. 2, the coil spring 39 wound around the right end area of the support shaft 19 presses the intermediate sleeve 20 to the left in FIG.
6 is urged so as to abut the outer peripheral surface.

As shown in FIG. 3, each of the dials 23 is provided with a serial number from "0" to "9" as a symbol, and a part of the dial 23 is formed by a slit 12B formed in the front cover 12. It is arranged so as to be exposed so that movement in the left-right direction in the figure is restricted. The inner peripheral surface of the dial 23 is provided with a gear 4 fixed to the outer peripheral portion of the intermediate sleeve 20 as shown in FIG.
3 so that the dial 23 can rotate around the support shaft 19 together with the intermediate sleeve 20 in a state in which the dial 23 is in mesh with the gear 43, while the dial 23 becomes independent in a state in which the mesh is released. And can be rotated. A groove 45 extending in the axial direction of the intermediate sleeve 20 is formed at one location, and the distal end 21A of the advance / retreat shaft 21 is provided in the groove 45 so as to be detachable.

The reciprocating shaft 21 is supported by a bearing 47 (see FIG. 3) of the inner case 18 so as to be movable in the axial direction, and a rear end 21B of the reciprocating shaft 21 is attached to the outer surface of the inner case 18. It is arranged so as to penetrate a hole 50 formed in the movable plate support plate 48. The advancing / retracting shaft 21 is normally set at the distal end 2 by a coil spring 52 mounted between the support plate 48 and the bottom of the bearing portion 47.
1A is urged to engage with the groove 45.

The movable plate 22 has a vertical surface 5 arranged so as to contact a rotor pin 28 of the operating member 15.
4, a horizontal surface 55 continuing to the upper end of the vertical surface 54, and a rear hanging surface 56 hanging down from the rear end of the horizontal surface 55 and extending laterally at a position behind the inner case 18. The rear hanging surface 56 is connected to the support plate 4.
8 is supported so as to be slidable in the left-right direction through two support blocks 57 provided on the left and right sides, whereby the rotor pin 28 is moved from the solid line position to the two-dot chain line position in FIGS. When it is displaced, it is pushed by this and can move rightward. In the rear hanging surface 56, a vertically extending elongated hole 58 located on the same axis as the hole 50 formed in the support plate 48 is formed. Normally the vertical surface 5
A coil spring 59 that urges the rotor 4 to abut the rotor pin 28 is interposed.

In the cover main body 11, a position detection hole 62 is formed on the rear end face 60 located behind the movable plate 22 so as to be coaxial with the hole 50 and the elongated hole 58. 6 and 7, a bar-shaped gauge 63 having a step 63A is provided.
Is provided so as to be inserted up to the position of the stepped portion 63A, and the position of the advance / retreat shaft 21 can be detected by the gauge 63 by an external operation.

The operation knob 25 is provided with a master key insertion port 65. By inserting the master key into the key insertion port 65 and rotating the key, the hook member 16 is independent of the position of the dial 23. Can be unlocked by rotating in the upright direction. In FIG. 1, reference numeral 67 denotes a ridge portion which is engaged and disengaged by a click operation with a recess on the locker side corresponding to the free end side of the door.

Next, the operation of the dial lock according to this embodiment will be described.

As shown in FIG. 2, it is assumed that the hook member 16 is engaged with a fixed-side engaging member (not shown) and that the number of the dial 23 is set to a position where unlocking is permitted. The groove 4 formed in the intermediate sleeve 20
5 enters the state in which the tip 21A of the reciprocating shaft 21 enters and engages with it. Therefore, the rear end 21B of the reciprocating shaft 21 is positioned at
The position shown by the solid line is reached and has not reached the elongated hole 58 formed in the movable plate 22, and is disengaged therefrom.

Accordingly, the movable plate 22 is in a state in which the rightward movement is not restricted, so that the operation member 15
5 can be rotated clockwise, which allows the rotor pin 28 to be displaced from the solid line position in FIG. 5 in the direction indicated by the two-dot chain line. Hook member 1 provided in
6 rotates in the upright direction, so that a door (not shown) can be opened.

Here, after the hook member 16 is again rotated to the locked position, one of the dials 23 is rotated to rotate the intermediate sleeve 20 meshing with the inner peripheral surface of the dial 23 via a gear into the support shaft 19. Is rotated by a predetermined angle in the circumferential direction, the position of the groove 45 of the intermediate sleeve 20 is angularly displaced, so that the advance / retreat shaft 21 engaged with the intermediate sleeve 20 escapes from the groove 45 and retreats. As a result, the rear end 21B of the advancing / retreating shaft 21 protrudes outward, and becomes a position where it enters into the elongated hole 58 formed in the movable plate 22 (see the dotted line position in FIG. 3). Therefore, in this state, even if the operation knob 25 is to be rotated clockwise, the movement of the movable plate 22 to the right is blocked by the reciprocating shaft 21, so that the rotation of the operation knob 25 is restricted, Thereby, the unlocking is prohibited.

Now, it is assumed that the hook member 16 is engaged with a fixed-side engaging member such as a locker, and that a specific person using the dial lock 10 has forgotten the specific number of the set dial. Assume. In this case, first, a master key (not shown) is inserted into the key insertion slot 6 provided in the operation dial 25.
5 and unlocked by independently rotating the hook member 16 in the upright direction.

As shown in FIG. 6, even in the unlocked state, the rear end 21B of the advancing / retracting shaft 21 is formed in the elongated hole 58 formed in the rear hanging surface 56 of the hook member 16.
This means that the user cannot use the lock as a dial lock only by dialing. Therefore, the gauge 63 is inserted into a hole 62 formed in the rear end face 60 serving as a position detection face of the cover main body 11. At this time, since the step 63A of the gauge 63 abuts on the rear end face 60 as a position detection surface to prevent further insertion, a certain gap C is formed here and the gap C is visually observed. Can be confirmed. Therefore, by rotating the dial 23 stepwise without pulling out the gauge 63, when the specific number is located at the reference position, the advance / retreat shaft 21
7, it is known that the gap C between the step 63A of the gauge 63 and the rear end face 60 has almost disappeared, as shown in FIG. Therefore, the dial 23
As far as is concerned, it can be easily confirmed from the front cover 12 that the number at the reference position at this time is the correct number,
Thereafter, the same detection method may be used for each dial 23.

The specific number to be unlocked can be changed with the operation dial 25 in the unlocked position. That is, when the operation knob 25 is in the unlocking position, the transmission member 3 in contact with the outer peripheral surface of the cylinder portion 26
Numeral 6 is a position deviated from the groove 26A of the cylinder portion 26 and is pushed into the inside of the inner case 18. As a result, the intermediate sleeve 20 is pushed rightward by the transmission member 36 against the urging force of the coil spring 39, and the gear 43 fixed to the outer peripheral portion of the intermediate sleeve 20 engages the dial 2
3 is displaced to a position outside the inner peripheral surface (see a dotted line position in FIG. 4), and the meshing state up to that point is released. Then, when the dial 23 is arbitrarily rotated and the operation knob 25 is returned to the locked position, the inner peripheral surface of the dial 23 and the gear 43 are brought into a state of meshing again. Therefore, the number at the reference position of the dial at the time of meshing is variably set as a new number.

Therefore, according to this embodiment, even if the unlock number is forgotten, the correct number can be easily obtained after forcibly unlocking with the master key. It is possible to easily cope with forgetting the number that may occur when the number is changed arbitrarily, and therefore, it is possible to provide a dial lock excellent in security without using expensive parts.

It should be noted that the dial lock 10 according to the present invention is not limited to the configuration of the embodiment described above, and the positions, shapes, etc. of the respective constituent members may be arbitrarily changed as long as substantially the same operation is achieved. Can be. For example, in the above embodiment, the groove 45 is formed in the intermediate sleeve 20, but the axial movement of the reciprocating shaft 21 can also be achieved by forming the outer peripheral surface of the groove into a cam shape. In addition to the case where the dial 23 is constituted by a number, it is also possible to use another symbol such as an alphabet or a combination thereof with a number.

[0029]

As described above, according to the present invention,
Conventionally, the reciprocating shaft is arranged in a direction substantially perpendicular to the axial direction of the tubular member, and the rotation of the hook member is appropriately controlled via the movable plate while using the position of the reciprocating shaft as a reference. In this case, it is possible to avoid a complicated engagement structure around the axis, thereby simplifying the configuration without requiring much high-precision machining of the parts, and obtaining an effect that the assembly can be easily performed.

Further, according to the present invention, while a groove is formed in the outer peripheral surface portion of the cylindrical member, the movable plate is allowed to move when one end of the reciprocating shaft is engaged with the groove, and when the groove is disengaged from the groove. Is provided so as to regulate the movement of the movable plate, the axial movement of the reciprocating shaft can be achieved by following the peripheral surface shape of the cylindrical member, and the engagement and disengagement between the cylindrical member and the reciprocating shaft is extremely smooth. Can be done.

Further, since the movement of the movable plate is regulated by inserting the other end of the advance / retreat shaft into a hole formed in the movable plate, the advance / retreat axis has a positional relationship of traversing the movement locus of the movable plate. The rotation of the operation member can be restricted by ensuring that the movement of the operation member is restricted.

Further, since a part of the cover body is used as a position detecting surface and a gauge is inserted into a hole formed in the position detecting surface to detect the position of the advance / retreat axis, even if the password is forgotten. The number can be easily obtained through visual confirmation. In addition, since the position detection surface is formed by using the cover body, it is possible to economically manufacture by effectively using existing components.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a dial lock according to an embodiment.

FIG. 2 is a perspective view showing an internal schematic structure of the dial lock.

FIG. 3 is a plan view showing a cross section of a part of the dial lock.

FIG. 4 is a schematic cross-sectional view showing a support portion region of the cylindrical portion with a dial.

FIG. 5 is a schematic front view showing a relative position between an operation member and a movable plate.

FIG. 6 is a schematic cross-sectional view showing a relative position between the advance / retreat axis and a position detection surface when the advance / retreat axis is out of a groove of a tubular member.

FIG. 7 is a schematic cross-sectional view showing a relative position between the advance / retreat axis and a position detection surface when the advance / retreat axis is engaged with a groove of a tubular member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Dial lock 11 Cover main body 15 Operation member 16 Hook member 19 Support shaft 20 Intermediate sleeve (tubular member) 21 Advancing / retracting shaft 21A Tip 21B Rear end 22 Movable plate 23 Dial 25 Operation knob 45 Groove 50 hole 58 Slot hole 60 Rear end surface ( (Position detection surface) 62 hole (Position detection hole) 63 Gauge

Claims (5)

[Claims] 1. A hook member capable of being disengaged from a fixed-side engaging member, a rotatable operating member for rotating and displacing the hook member between a locked position and an unlocked position, and arranged on an outer periphery of a predetermined support shaft. A cylindrical member provided so as to be axially movable by rotation of the operation member, and at least one member rotatably disposed on the outer periphery of the cylindrical member and provided detachably with the cylindrical member. A dial lock that allows rotation of the operating member when the specific symbol of the dial is set at a predetermined reference position and releases the engaged state between the engaging member and the hook member. In the above, while being arranged in a direction substantially perpendicular to the axial direction of the cylindrical member and being urged toward the cylindrical member, an advancing and retreating shaft whose tip is detachably provided on the outer peripheral surface of the cylindrical member, , Rotation of the operating member A movable plate provided so as to be movable in a direction substantially parallel to the axis of the cylindrical member with the rear end of the dial when the specific symbol of the dial is set to a position other than the reference position. A dial lock, which is configured to be able to be displaced to a position allowing movement of the movable plate when set to a reference position, while restricting the movement of the operating member. 2. A groove is formed in an outer peripheral surface portion of the cylindrical member, and when the tip of the reciprocating shaft engages with the groove, the reciprocating shaft is at a position allowing the movement of the movable plate. The dial lock according to claim 1, wherein the lock is located at a position where movement of the movable plate is restricted when the movable plate is removed from the groove. 3. The dial lock according to claim 1, wherein a hole is formed in the movable plate, and the movement of the movable plate is restricted by entering a rear end of the advance / retreat shaft into the hole. 4. A position detection surface provided with a position detection hole located substantially on the same axis as the advance / retreat axis outside the movable plate, and a predetermined gauge is inserted into the position detection hole to advance / retreat the axis. 4. The dial lock according to claim 1, wherein the position of the dial lock can be visually confirmed. 5. The dial lock according to claim 4, wherein the position detection surface is configured using a surface of a cover body surrounding the outside of the movable plate.