JPH0232777Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a padlock in which hooks are provided on both sides of the lock body.

The industrial field in which it is used is applied to general applications where locking is performed using a chain or the like.

Conventional padlocks have one hook, so in order to lock the object to be locked from rotating, opening and closing, and to prevent the object from moving, the hook requires two chains or a chain and a latch. There were some points that made it difficult to use.

The present invention is intended to provide an easy-to-use padlock for the above-mentioned applications, which has two hooks and a chain can be attached to each hook.

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

Figure 1 is a vertical sectional view of the padlock body, Figure 2 is the
The figure shows a sectional view taken along the line A-A, and FIG. 3 shows a cross-sectional view taken along the line B-B in FIG. 1. 1 is the padlock body;
Above it is a support hole 3 for connecting the base rod part 2a of the hook 2.
A locking hole 4 is formed in which the free end engaging portion 2b enters and exits, and a locking hole 4' and a centerline of the locking hole 4 are formed below the lock body on the extension of the centerline of the support hole 3. A support hole 3' is provided on the extension, and a base rod part 2'a that fits into the support hole 3' and a free end part 2' that enters and exits the locking hole 4'.
A hook 2' having a diameter b is provided in a position symmetrical to the hook 2.

At the tips of the base rods 2a, 2'a of the hooks 2, 2', there are hook springs 5, 5' that bias the hooks 2, 2' in the protruding direction, respectively. stopper pin 6 to prevent falling off,
Recesses 7 and 7' that loosely fit into the base rod 6' are respectively provided in the base rod portion.

The lock body 1 also has support holes 3 for the hooks 2 and 2',
A rotor 9 is provided on the center line of the ball hole at a midpoint between the support holes 3 and 3' so as to be rotatable in a direction perpendicular to the ball hole. The rotor 9 has a pin tumbler 11, which is a well-known device that normally makes the rotor unrotatable, but when a key is inserted, the tumbler is moved and the rotor is rotatable.

10, 10' are steel balls for locking, and support holes 3,
Alternatively, it is inserted into the ball hole 8 between the rotor 9 and the rotor 9, and has a slightly smaller diameter than the ball hole and can freely slide along the ball hole. Balls 10 and 1 are provided on the surfaces of the base rod portions 2a and 2'a of the hooks 2 and 2' that are fitted into the support holes 3 and 3' that face the ball hole 8 when the lock is locked.
Fitting portions 12, 12' into which a portion of the ball 0' fits are formed, and the rotor 9 has a ball 10 or a ball 10' on its circumferential surface.
The diameter of the ball is set so that it presses toward the fitting part and makes contact with the fitting part.

Ball escape recesses 13, 13' into which balls 10, 10' fit are formed on the circumferential surface of the rotor 9. The positions of the ball escape recesses 13, 13' are as shown in FIG. 4. When the rotor is rotated by an angle α from the locked state of the hook (the state shown in FIG. 1), the ball escape recesses 13' A ball escape recess 13' is formed at a position offset by an angle α from the center line of the ball hole so as to face the ball hole 10', and a ball escape recess 13 is similarly formed at a position offset by an angle β. In order to accurately realize the rotation of the rotor at an angle α or β, as shown in FIG. The range is limited to α+β. The ball escape recess is 13a,
13'a may also be used. In this example, both α and β are 45
A specific example is shown below.

Next, the effect will be explained. The state shown in FIG. 1 shows the case where both hooks are locked as described above, and the balls 10, 1
0' in the direction of the fitting parts 12, 12' of the base parts 2a, 2'a of the hooks 2, 2' to fit them, and the hooks 2, 2' are locked by the balls 10, 10'. The rotor 9 in this position is prevented from rotating by the pin tumbler 11. When the key is inserted into the key hole 16 of the rotor 9 from this state, the pin tumbler 11
is pushed up and disengaged from the rotor 9, and the rotor becomes rotatable. Now, rotate the rotor 9 clockwise by an angle α using the key, and at the position where the end of the guide groove 15 of the rotor is locked with the stopper pin 14, the ball escape recess 1
3' reaches the position of the ball 10', the pressure of the rotor against the ball 10' decreases, and the hook 2' protrudes due to the elastic force of the hook spring 5' of the hook 2', and the hook 2' protrudes on the circumferential surface of the hook base rod portion 2'a. The ball 10' is fitted into the ball relief recess 13' of the rotor, and the hook 2' is stopped when the end of the recess 7' engages with the stopper pin 6', and the free end 2'b is separated from the locking hole 4'. It becomes unlocked and a chain etc. hung on the hook 2' can be removed. At this time, the ball 10 of the hook 2 is fitted into the fitting portion 12 of the hook, and the hook 2 is pressed by the circumferential surface of the rotor 9 to maintain the locked state. When the hook 2' is pressed in the direction of the hook spring 5' from the unlocked state of the hook 2' and pushed down to the position where the fitting part 12' corresponds to the ball 10', the ball 10' will escape from the fitting part 12'. The rotor becomes loose between the recesses 13' and becomes rotatable, and the rotor is rotated counterclockwise by an angle α to return to its original position (the state shown in FIG. 1). In order to bring the hook 2 into the unlocked state from this state, the rotor 9 is further rotated counterclockwise by an angle β to bring the ball escape recess 13 of the rotor to a position corresponding to the ball 10, thereby eliminating the action of the hook 2'. They have the same effect.

The present invention has the effect of making it easier to hang chains and the like because the two hooks are locked and unlocked alternately with the above structure.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the embodiment of the present invention, and Fig. 2 is a cross-sectional view of the embodiment of the present invention.
FIG. 3 is a sectional view taken along the line B--B in FIG. 1, and FIG. 4 is an explanatory diagram illustrating the position of the cam surface of the rotor. 1... Lock body, 2, 2'... Hook, 3, 3'...
...Support hole, 4,4'...Lock hole, 5,5'...Hook spring, 6,6'...Stop pin, 7,
7'... Recess, 8, 8'... Ball hole, 9... Rotor, 10, 10'... Ball, 11... Pin tumbler, 12, 12'... Fitting part, 13, 13'...
Ball escape recess, 14... Stopper pin, 15...
...Guide groove.

Claims (1)

[Scope of utility model registration request] The padlock body is provided with a support hole in the base portion of one hook and a locking hole in the free end engagement portion of the other hook on the same extension line, and the two hooks are provided symmetrically on both sides of the lock body, A ball hole is provided that communicates orthogonally with the support holes of the two hooks, and a cylindrical rotor is rotatably attached to the lock body at the midpoint between the ball holes in a direction perpendicular to the ball holes. A ball interposed in a ball hole between the holes, and a fitting part for fitting the ball provided on the base rod of each hook inserted into the support hole, and a connection between the rotor peripheral surface and the fitting part. When the balls come into contact between them, the hook is fixed and locked, and at the rotor position where both hooks are locked, the above-mentioned A padlock provided with ball escape recesses into which balls are fitted, and a rotation range limiting device for ensuring rotation of the rotor at the fixed angle.