JP7249250B2 - locking device - Google Patents

Description

The present invention relates to locking devices.

Patent Document 1 describes a lock device that can be transitioned between a locked state in which both ends of a shackle are restrained by a body portion and an unlocked state in which one end is separated from the body portion, like a padlock. Are known.

In this conventional example, the lock device is formed by fitting the end of the shackle into a chamber that opens to the upper end surface of the lock body (body portion), and the body portion is engaged with a locking recess formed in the shackle. a locking member having a receiving portion that allows the ball-shaped blocking member to move in the unlocking direction from the detent recess; A locking core (plug) is accommodated.

The locked state of the lock device is obtained by restricting the movement of the spherical blocking member in the unlocking direction with respect to the shackle by the locking member. This is done by matching the detent recess to the detent.

Japanese Patent No. 4350730

However, in the conventional example described above, in order to perform the unlocking operation, it is necessary to insert the unlocking key into the plug exposed on the lower end surface of the main body and operate it. In general, this type of locking device is used in a suspended position with the main body downward so that the shackle is hooked on the object to be locked. There is a problem that it is inconvenient to use because it is necessary to turn the display upside down or to look into it from below.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a locking device which is easy to use and which is designed to eliminate the above drawbacks.

According to the present invention, the above objects are:
a shackle 2 with parallel long and short legs 1;
The legs 1 of the shackle 2 are received in the leg fitting holes 3 that open upward, and the shackle 2 is held in the leg fitting holes 3 from the locked position. a main body portion 4 held movably to an unlocked position in which it is separated from the leg fitting hole 3;
a stopper 5 that engages the shackle 2 at the locked position to restrain the shackle 2 at the locked position and releases the restraint at the unlocked position;
It is inserted into the control member insertion hole which is opened downward from the center of the upper surface of the main body, the upper surface of which is closed by a closing member, and is rotated between the unlocking rotation position and the locking rotation position by the authentic unlocking key 6. a stopper control member 8 driven between locked and unlocked positions that prohibits or permits movement of the stopper 5 toward the unlocked position by means of a possible plug 7;
The plug 7 is arranged along the arrangement direction of the leg fitting holes 3 in the main body 4 ,
A connector 12 having a connecting shaft 11 fixed by a pin member 10 driven into the main body portion 4 is fixed to the lower surface of the main body portion 4. This is achieved by providing a locking device.

In the present invention, the shackle 2 fitted in the leg fitting hole 3 formed in the main body 4 has an unlocked position where the short leg 1 (1A) is separated from the main body 4, and both long and short shackles. The leg portion 1A can be operated to move between a locked position housed in the main body portion 4, and at the locked position, a stopper 5 in the main body portion 4 is engaged with the leg portion 1 to restrict the movement of the shackle 2. .

The locked state is maintained by moving the stopper control member 8 driven by the plug 7 to the locked position and restricting the movement of the stopper 5 toward the unlocked position.

The plug 7 is arranged in the direction in which the leg fitting holes 3 are arranged, that is, in a plane in which the rotation axis of the plug 7 includes both leg fitting holes 3, or in a plane parallel to this, with respect to the movement direction of the shackle 2. In the present invention in which the plug 7 is arranged at a right angle, the plug 7 is exposed toward the side wall. Since there is no need for an operation such as reversing, usability is improved.

again,
Since the plug 7 is arranged with an appropriate number of tumblers, a predetermined length dimension is required. , the length in the thickness direction of the main body 4, i.e., the length in the direction perpendicular to the plane to which the pair of leg fitting holes 3 belongs, is Since there is no need to increase the size, the size of the device can be reduced.
moreover,
A connector 12 having a connecting shaft 11 fixed by a pin member 10 driven into the main body portion 4 is fixed to the lower surface of the main body portion 4. As a result, since the connector 12 is firmly connected to the main body 4, for example, when the connector 12 is connected to the lock target holding portion 16 and the shackle 2 is connected to the lock target 17 such as valuables, the lock device can be locked. It can be used as a connector that linearly connects the object holding portion 16 and the locking object 17 so as to be lockable and unlockable.

moreover,
The plug 7 is attached to the long leg 1 (1B) with the head 7a positioned on the side wall surface adjacent to the leg 1A below the short leg 1A of the shackle 2 in the locked position. When constructing the locking device arranged facing, the area from below the leg fitting hole 3 accommodating the short side leg portion 1A of the shackle 2 to the leg fitting hole 3 for the long side leg portion 1A. can be used as a storage area for the plug 7, the space can be effectively used.

moreover,
The stopper control member 8 includes a retraction recess 13 that allows the stopper 5 to move toward the unlocked position with respect to the shackle 2, and a drive protrusion 14 that is formed in a slit shape and provided at the end of the plug 7. and a driven slit 15 to be inserted,
When the plug 7 is configured as a lock device that is vertically translated, the rotation operation of the plug 7 can be directly converted into the vertical operation of the stopper control member 8, so that the structure can be simplified. .

According to the present invention, since there is no need to look into the lower surface of the main body when locking or unlocking, or to invert the upper limit, usability is improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows this invention, (a) is a front view, (b) is a 1B direction arrow directional view of (a), (c) is 1C-1C line sectional drawing of (a). It is 2A-2A line sectional drawing of FIG.1(b). In the sectional views of FIG. 2, (a) is a sectional view taken along line 3A-3A, and (b) is a sectional view taken along line 3B-3B. It is a figure which shows a stopper control member, (a) is a perspective view, (b) is a perspective view seen from the opposite direction, (c) is a 4C direction arrow view of (b), (d) is 4D of (c) -4D line sectional view. FIG. 11 shows the plug, (a) showing the relationship between the plug and the stopper control part, (b) showing the state in which the driving protrusion is inserted into the driven slit, and (c) showing the 5C direction of (b). It is an arrow view. 2A is a sectional view corresponding to FIG. 2, FIG. 3B is a sectional view corresponding to FIG. 3A, and FIG. 3C is a sectional view corresponding to FIG. b) is a cross-sectional view corresponding to FIG. It is sectional drawing which shows the state which operated the shackle, (a) is a figure which shows the middle of movement to an unlocking position, (b) is a figure which shows the state moved to the unlocking position. It is a figure which shows a coupler, (a) is a principal part expanded sectional view. (b) is a diagram showing a state in which the locking object is connected to the locking object holding portion by the locking device of the present invention.

As shown in FIG. 1 and subsequent figures, the locking device has a body portion 4 having a leg fitting hole 3 that opens upward, and a shackle 2 that is formed by bending a round bar into a substantially U shape. . In this specification, "up and down", "left and right" and a direction perpendicular to the plane of the paper are referred to as "front and back directions" based on the state of FIG. 1(a).

The shackle 2 has a pair of long and short legs 1 parallel to each other. 2, both of the long and short legs 1 are accommodated in the main body 4, and as shown in FIG. The leg 1 can be disengaged from the main body 4 and can be moved between an unlocked position in which the entire shackle 2 can be horizontally rotated around the leg 1 on the long side.

In the leg fitting hole 3, the side corresponding to the leg portion 1 (1A) on the short side (hereinafter referred to as "short side leg fitting hole 3A") is the short side of the shackle 2 whose terminal end is at the locking position. As a bottomed hole substantially coinciding with the free end position of the leg portion 1A, the side corresponding to the long side leg portion 1 (1B) (hereinafter referred to as "long side leg fitting hole 3B") extends through the body portion 4. It is formed as a cylindrical through hole penetrating vertically.

At a position facing the leg portion 1 of the shackle 2, there is formed a locked portion 2a to which a stopper 5 for restraining the shackle 2 at the locking position is locked. In this example, the stopper 5 is formed of a sphere, and the engaged portion 2a is formed as a spherical concave portion having a curved surface into which the spherical stopper 5 can be fitted.

An extended groove 2b extending downward from the engaged portion 2a is formed in the longer leg portion 1B. The extension groove 2b is shallower than the engaged portion 2a, and as shown in FIG. 7(b), extends to correspond to the stopper 5 when the shackle 2 is in the unlocked position. .

On the other hand, the body portion 4 is formed with a holding hole 4a for the stopper 5 corresponding to the position of the engaged portion 2a when the shackle 2 is in the locked position. The stopper holding hole 4a is a cylindrical hole having a diameter that allows the stopper 5 to move freely, and is formed so as to connect the leg fitting holes 3 in a horizontal posture.

In this example, the stopper holding hole 4a is a drill hole opened from one of the right and left side walls of the main body 4 and ends at the short side leg fitting hole 3. blocked. Further, the diameter of the short side leg fitting hole 3A is slightly smaller than the diameter of the stopper holding hole 4a, and the end of the drill hole does not pass through the short side leg fitting hole 3A. As shown in (b), the depth is set so that the stopper 5 stops at the locking position even when the short side leg portion 1A of the shackle 2 is detached.

A plug 7 and a stopper control member 8 are arranged in the body portion 4 in order to control the locked/unlocked state of the shackle 2 .

As shown in FIG. 4, the stopper control member 8 has a shape in which the lower half of a cylindrical body is cut off to form an upper cylindrical portion 8b and a lower planar portion 8a. It is inserted into a cylindrical control member insertion hole 4b extending vertically from the center of the main body 4 and perpendicular to the stopper holding hole 4a. The control member insertion hole 4b is formed by drilling a drill hole downward from the center of the upper surface of the main body 4 and then closing the upper surface with a closing member 18. As shown in FIG.

The stopper control member 8 is disposed so as to be vertically movable with the flat portion 8a directed toward the short side leg fitting hole 3A, and is positioned between a locking position corresponding to the end of the downward stroke shown in FIG. ) to and from the unlocked position corresponding to the end of the upper stroke shown in FIG.

As shown in FIG. 2, the diameter of the columnar portion 8b of the stopper control member 8 is such that the stopper 5 engaged with the engaged portion 2a of the shackle 2 at the locking position does not move in the engagement/disengagement direction, i.e., movement toward the center. Formed to regulating dimensions.

Further, a retraction recess 13 is formed in the cylindrical portion 8b of the stopper control member 8 so as to face the stopper 5 in the unlocked position. Each of the retracting recesses 13 is formed by a curved surface into which the corresponding stopper 5 can be fitted. ), the dimension is set so as to absorb the interference between the stopper 5 fitted in the extension groove 2b of the leg portion 1B and the stopper control member 8. As shown in FIG.

On the other hand, the depth of the retraction recess 13 corresponding to the short leg portion 1A is set to a dimension capable of absorbing the interference of the stopper 5 contacting the short leg portion 1A with the stopper control member 8. be. The retraction recess 13 corresponding to the short side leg portion 1A has a groove shape formed by pressing a spherical body having substantially the same diameter as the stopper 5 against the columnar portion 8b and moving it downward. The lower end of 13 is opened toward the ceiling surface of eaves-shaped portion 8c formed between flat portion 8a.

Further, the stopper control member 8 is formed with a driven slit 15 which extends in a direction perpendicular to the plane portion 8a and which is opened sideways.

The plug 7 is formed by holding an appropriate number of tumblers 7b, and is inserted horizontally into the short side leg fitting hole 3A of the main body 4 from the left side wall toward the opposite side wall to approximately the center position in the left-right direction. It is rotatably inserted into the hole 4c.

When inserted into the plug insertion hole 4c, the plug 7 has its center of rotation directed in the direction perpendicular to the direction of movement of the shackle 2 within the plane to which the center lines of the two leg fitting holes 3 belong, and the short side leg. A head portion 7a and a key insertion opening 7c extending in the axial direction from the head portion 7a are exposed on the side wall surface near the fitting hole 3A, and the end surface is arranged in a state of facing the flat portion 8a of the stopper control member 8. be done.

As shown in FIG. 5, a driving protrusion 14 is projected from the end face of the plug 7, that is, the end opposite to the head 7a of the unlocking key 6. As shown in FIG. In this example, the drive protrusion 14 is formed by driving a spring pin into the plug 7, and the drive protrusion 14 is inserted into the driven slit 15 of the stopper control member 8 with the plug 7 attached.

In this example, the tumbler 7b is formed in the shape of a pin, and a driver pin 20 biased by a spring 19 in the direction of protruding into the plug insertion hole 4c is attached to the main body 4 at the locking rotation position shown in FIGS. A closing member 18 closes the opening to the lower surface of the pin insertion hole 4 d formed in the main body 4 for inserting the driver pin 20 .

As shown in FIG. 5, the plug 7 is formed with a retaining groove 7d, and a stopper pin 21 driven into the retaining groove 7d in the front and back direction of the main body 4 is locked in the retaining groove 7d. This prevents the plug 7 from being detached from the main body 4 (see FIG. 2).

Further, as shown in FIG. 3(a), the retaining groove 7d has a locking position determining portion 21a that abuts on the stopper pin 21 in the locked state to determine the lock-side rotational end of the plug 7, and ), an unlocking position determining portion 21b for determining the unlocking side rotational end of the plug 7 is provided.

Therefore, in this example, in the locked state shown in FIG. , the upward moving operation of the shackle 2 is prohibited, and the locked state is maintained.

In this state, when the genuine unlocking key 6 is inserted into the key insertion opening 7c of the plug 7, the boundary between the tumbler 7b and the driver pin 20 coincides with the outer periphery of the plug 7, so that the plug 7 can be rotated. When the plug 7 is rotated, the upper surface of the driven slit 15 is pushed by the drive protrusion 14 of the plug 7, and the stopper control member 8 moves upward, as shown in FIG.

When the plug 7 is rotated until the unlocking position determining portion 21b abuts against the stopper pin 21, the stopper control member 8 moves to the unlocking position, the retraction recess 13 faces the stopper 5, and the stopper 5 is locked. The movement toward the disengaged position with respect to the portion 2a is permitted. When the shackle 2 is pulled upward in this state, as shown in FIG. When the shackle 2 is pulled out to the unlocked position abutting the end, as shown in FIG. 7(b), the short side leg 1 of the shackle 2 is separated from the main body 4, and then the long side leg 1B is removed. The shackle 2 can be locked in a predetermined locking symmetry by rotating horizontally about the center.

From this state, the shackle 2 is pushed to the locked position again, and the plug 7 is rotated to the locked position.

Furthermore, a connector 12 is fixed to the lower surface of the main body portion 4 . As shown in FIG. 8( a ), the connector 12 includes a connecting shaft 11 . After inserting the connecting shaft 11 into the mounting hole 9 formed in the main body 4 , the pin member 10 is driven into the main body 4 . irremovably fixed.

A connecting aid 12a is rotatably connected to the connecting shaft 11 around the central axis (C11) of the connecting shaft 11, and a U-shaped hook member 12c is connected to the connecting aid 12a via a connecting pin 12b. The pin 12b is connected to rotate around the central axis (C12).

Therefore, the hook member 12c is rotatable about two axes and is allowed to move in the tilting direction with respect to the central axis (C11) of the connecting shaft 11, so that the hook member 12c can be rotated with respect to the main body 4 as desired. can take a stance.

As shown in FIG. 8(b), the locking device configured as described above can be used to firmly and safely connect the object to be locked 17 to the holding part 16 for the object to be locked. A belt or the like worn by a person can be used as the locking object holding portion 16 when carrying the locking object 17 .

In this state, since the shackle 2 and the hook portion 12c are arranged substantially on a straight line, the lock device is interposed between the locking object 17 and the locking object holding portion 16, so that the user can carry it. Operability of the locking object 17 itself is improved because the locking device does not become an obstacle at times, and an appropriate degree of freedom of movement is secured between the locking object 17 and the locking object holding portion 16. does not deteriorate.

The insertion opening 7c for the unlocking key 6 of the plug 7 is arranged on the side wall of the main body 4 as indicated by the arrow in FIG. 8(b). When performing lock operation, it is not necessary to look into the lower surface or to turn over, so that operability can be improved.

Furthermore, since the rotation axis of the plug 7 is oriented in the horizontal direction, there is no need to set a space for absorbing the length of the plug 7 in the front and back direction, so the thickness dimension in the front and back direction can be reduced. It is possible to reduce the size of the device.

In addition, since the plug 7 is arranged below the short side leg fitting hole 3A using the space up to the long side leg fitting hole 3B, the vertical dimension of the main body 4 can be shortened. becomes possible.

1 Leg 2 Shackle 3 Leg Fitting Hole 4 Main Body 5 Stopper 6 Unlocking Key 7 Plug 7a Head 8 Stopper Control Member 9 Mounting Hole 10 Pin Member 11 Connection Shaft 12 Connector 13 Retreat Recess 14 Drive Protrusion 15 Driven slit

Claims (3)

a shackle with parallel long and short legs;
The legs of the shackle are received in the leg fitting holes that open toward the upper surface, and one of the legs is removed from the leg fitting holes from the locked position where both legs of the shackle are held in the leg fitting holes. a main body movably held to an unlocked position;
a stopper that engages the shackle at the locked position to restrain the shackle at the locked position and releases the restraint at the unlocked position;
It is opened downward from the center of the upper surface of the main body, is inserted into the control member insertion hole whose upper surface is closed by the closing member, and can be rotated between the unlocking rotation position and the locking rotation position with a genuine unlocking key. a stopper control member driven between locking and unlocking positions for prohibiting or permitting movement of the stopper toward the unlocking position by a plug;
The plug is arranged along the arrangement direction of the leg fitting holes in the main body ,
A connection shaft is provided on the lower surface of the main body, which is arranged coaxially with the control member insertion hole, is fitted into a mounting hole formed in the lower surface, and is fixed by a pin member driven into the main body. A locking device to which the connector is fixed . 2. The plug of claim 1, wherein the plug is positioned under the short leg of the shackle in the locked position and toward the long leg with the head on the side wall surface adjacent the leg. locking device. The stopper control member includes a retraction recess that allows movement of the stopper to the unlocked position with respect to the shackle, and a driven slit that is formed in a slit shape and into which a driving projection provided at the end of the plug is inserted. with
3. The locking device according to claim 1, wherein the plug is vertically translated.

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