JPS5834202Y2 - Separate code lock - Google Patents

Description

[Detailed description of the invention] The present invention is a separate type that includes a lock lever, a lock barrel, an outer ring, an inner ring, and a moving member, and allows the user to easily change the arrangement of codes when unlocking. Regarding code locks.

It is not a coded lock with a U-shaped locking lever, which has a U-shaped locking lever, and the short lever part is partially released from the lock body while the long lever part of the locking lever is engaged with the lock body. The so-called separable code lock is equipped with a straight bar-shaped lock rod and a lock barrel, and the lock rod can be completely pulled out and separated from the lock barrel, allowing it to be released. It has been increasingly used in recent years due to its convenience.

However, in conventional separable code locks, a notch through which the lock piece could be inserted was formed directly in the engraved rotary ring.
The code arrangement for unlocking is fixedly determined at the time of manufacturing the lock into which the engraved rotary ring is installed. Therefore, in addition to requiring a great deal of attention and man-hours to manage the lock codes during lock production, it is also difficult to make the code arrangement known to others. Even if there is a possibility that
There were disadvantages such as the code arrangement could not be changed and the lock had to be discarded for safety reasons.

In the present invention, the engraved rotary ring is composed of an outer ring having a code and an inner ring provided with a notch for inserting a lock piece, and the outer ring and the inner ring are removable. By using a moving member that can cause relative movement in the unlocking direction between the inner ring and the inner ring, the user can arbitrarily determine the code arrangement and easily change it, thereby solving the above-mentioned problems. The purpose is to provide

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

1 and 2, the code lock 1 of the present invention has a lock rod 2 having a grip portion 2A and a rod portion 2B with lock pieces 21 erected at intervals, and the other grip portion 3A. A groove 31 is formed into which the lock piece 21 is inserted with its tip 22 protruding outward, and an insertion hole 33 into which the rod portion 2B is inserted.
The lock barrel 3 includes a cylindrical portion 3B having a hole therein, a movable member 5 and a collar 6 attached to the grip portion 3A, and a notch that is loosely fitted into the cylindrical portion 3B and into which the tip 22 of the lock piece 21 can be inserted. It includes an inner ring 7 provided with a cutout 71, an outer ring 8 enclosing the inner ring 7, and a trifurcated spring 91, and the movable member 5 and collar 6 are attached to the grip 3A, and the inner ring 7 and After each village of the outer ring 8 is sequentially inserted into the cylindrical part 3B and a spring 91 is attached to the end, a retaining ring 92 is fitted into the circumferential groove 32 formed at the end of the cylindrical part 3B to prevent each part from coming out. .

Note that the gripping parts 2A and 3A are provided with grooves 2Al and 3A1 into which fasteners such as chains (not shown) are inserted, and blind holes 2A2 and 3A2 into which the fasteners are hung. At the same time, the arrow mark 2A facilitates positioning when inserting the lock rod 2 into the lock barrel 3, and also serves as a reference for code matching of the outer ring 8.
3,3A3 into lock piece 21. It is attached to match the groove 31.

At the tip of the rod portion 2B of the lock rod 2, a locking recess a (2B,) and a locking recess b (2B2), which are small recesses, are arranged side by side.

On the other hand, the grip portion 3A is provided with a through hole in its cylindrical portion a (38) that reaches the insertion hole 33 from the outer surface and cuts out a part of the inner surface of the insertion hole 33.
A spring hole 34 that opens at 3 is provided, and a spring piece 93 that can be fitted into the latching recess a (2B1) and the latching recess b (2B2) is inserted into this spring hole 34.

The latch recess a (2B,) is the position where the lock rod 2 is completely inserted into the lock barrel 3, while the latch recess b (2B2) is the position where the lock rod 2 is completely inserted into the lock barrel 3.
When the lock rod 2 is pulled out to the position where it engages with the notch 71 of the inner ring 7, it is securely fitted into the spring piece 93.

A circumferential groove 35 is provided on the inner surface of the grip portion 3A, and a U-shaped first notch groove 36 and a relatively shallow second notch groove 36 are provided at three locations on the outer peripheral end surface. A notch groove 37 is provided, and a small diameter boss portion 51 formed in the movable member 5 is provided in the circumferential groove 35.
, and the three retaining pieces 52 on the small-diameter boss portion 51 of the moving member 5 are respectively deposited in the first notch groove 36 .

Note that the moving member 5 has a cylindrical portion b that can press only the outer ring 8.
(53) on the other surface, and the moving member 5 has the grip portion 3A.
and the outer ring 8 on the side of the grip portion 3A, and as the retaining piece 52 rotates, the retaining piece 52 is moved from the first notch groove 36 to the second notch groove 37 in the axial direction of the lock barrel 3. By displacing and moving the cylindrical portion b (53), the outer ring 8 in contact with the cylindrical portion b (53) is simultaneously moved in the axial direction of the lock cylinder 3, in this example, axially outward, that is, in the unlocking direction, and the inner ring 3 and It can cause the position to shift.

Note that the unlocking direction refers to the direction in which the lock rod 2 is pulled out from the lock barrel 3 in order to unlock the separable code lock 1, that is, the direction away from the grip portion 3A with the grip portion 3A as a reference.

The grip portion 3A has a circumferential groove 35 and a step, and the cylindrical portion a
(38), and a collar 6 for positioning the inner ring 7 is inserted into the cylindrical portion a (38).

The inner ring 7 has the cutout portion 71 and the cylindrical portion 3B.
A flange 73 having an inner hole 72 through which the flange 73 can be inserted.
The outer periphery of the cylindrical portion C (74) is provided with relatively short locking protrusions 75 at positions divided into six equal parts with the notch 71 as a reference. , are formed starting from the end surface 76.

The outer ring 8 has a recess 81 at a position dividing the outer periphery into six equal parts.The recess 81 is marked with a symbol (A-F in this embodiment), and the inner surface of the recess 81 is provided with a recess 81 that fits loosely into the outer periphery of the inner ring 7. It has a small hole part 83 having a large inner diameter and a locking groove 82 that can be engaged with the locking protrusion 75, and a large hole part 85 having a step 84 with respect to the small hole part 83.

The small hole portion 83 is formed by the locking groove 8 due to the displacement of the outer tongue 8 and the inner ring 7 due to the movement of the moving member 5.
The width dimension is set such that the engagement between the locking protrusion 75 and the locking protrusion 75 is released.

Each of the inner ring 7 and outer ring 8 is sequentially inserted into the cylindrical portion 3B, and is prevented from being removed by a retaining ring 92 via the spring 91.

Note that the bent portion 91A of the spring 91 presses against the step 84 of the outer ring 8, so that the outer ring 8 is urged toward the grip portion 3A by the spring 91.
Even when the outer ring 8 and the inner ring 7 are out of position, they can be elastically restored by the spring 91, and the inner ring 7 is separated from the lock piece 21 by the same number of circumferences and the same distance from the lock piece 21 due to the mounting thereof.

Next, the operation of the code lock of the present invention will be explained with reference to FIG. 3, which shows a state in which the moving member 5 is operated in the lower half.

First, in a state in which the notch 71 of each inner ring 7 is aligned with the lock piece 21 (unlocked state), pull the grip part 2A and lock it with the spring piece 93 from the first latching recess a (2B,). By moving to the second locking recess b (2B2), each lock piece 21 engages with the notch 71 and prevents the inner ring 7 from rotating.

Next, the moving member 5 is operated, and only the outer ring 8 is moved relative to the inner ring in the unlocking direction against the pressing force of the ring 91 to engage the locking protrusion 75 and the locking groove 82. unlock.

At this time, the engaging pieces 52 are placed stationary in the second notched grooves 37, and during the above operation, the movable members 5 are held at their displaced positions and do not move carelessly, so the outer rings 8 can be easily rotated individually. , making sign reversal convenient.

As a result, the outer ring 8 becomes freely rotatable, and the arrow mark 2A3°3A3
Then, the outer ring 8 is rotated until the desired sign of the outer ring 8 matches, and then the movable member 5 is returned to its original position, and the locking projection 75 and the locking groove 82 are engaged again.

When the inner ring 7 is rotated by the outer ring 8, the flange 73
latches the lock piece 21 and becomes locked.

As shown above, the coded lock of the present invention can change the coded arrangement very easily, so even if someone else learns the coded arrangement, there is no need to arbitrarily change the arrangement each time and replace the lock itself. In addition, the inner ring 7 and the outer ring 8 can be assembled with one type each, without using multiple types of rotary rings with various cutouts and code positions as in conventional products. This has a great effect on the mass production of tablets.

Furthermore, if all the codes can be initialized to A during production, the man-hours required to manage the lock codes will be significant, and the code arrangement can only be changed when the lock is unlocked, which improves operational safety. ing.

Note that it is also possible to provide only one locking protrusion 75 on the outer periphery of the inner ring 7 as shown in FIG. It is also possible to make both of them removable.

Further, instead of moving the outer ring 8 as shown in FIGS. 1 to 4, the inner ring 7 is moved relative to the outer ring 8 to release the engagement.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional view showing an embodiment of the separable code lock of the present invention, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a partial cross-sectional view showing the operating state of the lower half, and Fig. 4 is a partial cross-sectional view showing an embodiment of the separable code lock of the present invention. FIG. 7 is a perspective view showing another example of the inner ring. Explanation of main symbols 2: Lock lever, 2A: Grip section, 2B: Rod section,
3: Lock barrel, 3A: Grip section, 3B: Cylindrical section, 5: Moving member, 7
: Inner ring, 8: Outer ring, 21: Lock piece, 22: Tip, 31: Groove, 71: Notch.

Claims (1)

[Scope of utility model registration request] A lock rod 2 has a grip portion 2A and a rod portion 2B with lock pieces 21 erected at intervals, and the other grip portion 3A, and the lock piece 21 has a tip portion 22 extending outward. The lock barrel 3 has a groove 31 that can be inserted while protruding and is provided with a cylindrical part 3B that is inserted into the rod part 2B, and a notch part 71 that allows the tip part 22 of the lock piece 21 to be inserted. And the same number of lock pieces 21 are arranged in the axial direction of the lock cylinder 3 at the same intervals, and the cylinder part 3B is
a plurality of inner rings 7 which are loosely fitted into the inner rings 7, each having an annular shape and having a code on the outer peripheral surface, forming a pair with each inner ring 7, lining up in the axial direction and fitting onto the outer periphery of the inner ring 7; 7, a plurality of outer rings 8 which can be resettable relative to the inner ring 7 in the axial direction due to elasticity, and can be ejected from the inner ring 7 at positions corresponding to the respective symbols due to the positional deviation; It is interposed between the inner surface of the grip portion 3A and the inner ring 7 or the outer ring 8 located on the side of the grip portion 3A, and is movable in the axial direction and can be held at the displaced position, and due to the displacement, the inner ring 7 and the outer ring 8 and a movable member 5 which can be relatively shifted in the axial direction.