JP2005179890A - U-shaped lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a U-shaped lock which is simple in structure and smoothly operable for locking/unlocking. <P>SOLUTION: The U-shaped lock is a combination of a lock body which has lock holes formed in an upper surface thereof, and cylinder lock mechanism built therein with a keyhole exposed to the outside; and a U-shaped bolt rod which has locking recesses formed at lower inner sides thereof. Then a rotary lever having a pair of engaging projections erected therefrom is fitted on an inner end of the cylinder lock mechanism, and a pair of right and left sliding levers each of which has an energizing spring to withdrawably protrude its front end in the lock hole under normal conditions, are interposed between the engaging projections and the lock holes. Further each locking recess formed in the bolt rod is engaged with the front end of the sliding lever, and a key is pulled out of the cylinder lock mechanism, to thereby set the U-shaped lock. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a U-type lock lock in which both ends of a U-shaped ridge are locked by a cylinder lock mechanism provided in the lock body, and in particular, by strengthening this type of lock device against impact. The U-shaped ridge or the lock body in the locked state is shocked so that the lock is not unlocked illegally.

This type of conventional lock is mainly used to lock the tire of a bicycle or motorcycle. However, if a hammer is applied to the U-shaped bag or the lock body in a locked state, There is a case where the engaging portion between the locking recess provided in the lower portion and the stopper on the locking mechanism side is disengaged or the locking mechanism is broken, and the vehicle is illegally unlocked, and the vehicle may be stolen.

JP-A-8-291661 (for example, see page 1) JP-A-8-86132 (see, for example, page 1) Japanese Utility Model Publication No. 5-28870 (see, for example, page 1) Registered Utility Model No. 3058343 (for example, see page 1) JP 2000-336998 A (see, for example, page 1) Japanese Patent Laid-Open No. 2002-309829 (for example, see page 1)

For example, as in Patent Documents 1-4, a U-type lock lock in which the axis of the locking mechanism and the lock main body are aligned in a horizontal line has a drawback that it is vulnerable to impact from the side.
In order to eliminate this drawback, the U-type locks of Patent Documents 5 and 6 having a key hole in the lower surface of the central part of the lock body and vertically forming the axis of the lock mechanism have a complicated structure and increase the cost. In addition, there is a drawback that the locking operation and the unlocking operation are inferior in smoothness.

From the above, the problem to be solved by the present invention is that the structure of the U-type lock having a key hole in the center of the lock body and the axis of the lock mechanism formed vertically is simplified and smooth. The purpose is to enable locking and unlocking operations.

  Therefore, in order to solve the above-mentioned problems, the present invention has a lock body with a cylinder lock mechanism built in with a key hole facing the center of the body, and a pair of left and right locking holes on the upper surface, and lower ends. In the U-shaped lock that is combined with the U-shaped hook that fits into the locking hole and is locked by the cylinder locking mechanism, a locking recess facing the inside is provided at the lower part of the hook. A rotating lever having a pair of engaging projections erected in the radial direction at the inner end of the cylinder locking mechanism so as to rotate integrally with the cylinder portion, and the engaging protrusion on the rotating lever side and the locking hole In between, a pair of left and right slide levers, each provided with an urging spring and projecting the tip portion so as to freely enter and exit the locking hole, and when the lower part of the hook is inserted into the locking hole, The tip of the slide lever retracts against the bias spring After allowing the lower end of the rod to be inserted, it automatically recovers, engages the slide lever with the locking recess, removes the key of the cylinder locking mechanism, and holds the cylinder non-rotating. It is intended to provide a U-shaped lock that is characterized in that both ends of the bag are locked in the body.

  The U-shaped lock according to the present invention is difficult to hit the lock body from the left and right because the axis of the locking mechanism is formed vertically with the key hole facing the center of the lock body. Since the U-shaped ridge has the locking recess only on the inner side surface, it has strength against impact and strength against vibration. In addition, the locking recess on the heel side and the tip on the slide lever inside the lock body can be smoothly engaged and withdrawn, making the locking and unlocking operations smooth, making manufacturing easier and reducing costs. Can do.

Further, the invention of claim 2 wherein the locking hole opened on the upper surface of the lock body is provided with a receiving metal and a receiving spring at each inner end so as to elastically support the lower end of the collar. Since the locking position of the heel where the locking recess on the heel side engages with the tip on the slide lever side is held at a fixed position by the urging force of the receiving spring, it is excellent in vibration resistance and the reliability of locking is improved.

Between the pair of engaging protrusions raised on the rotating lever and one end of the notch provided on the slide lever so as to fit the engaging protrusion, the slide lever alone is allowed to move backward, By providing a clearance that allows passage of the lower end of the rod inserted into the locking hole, the lower end of the rod can be inserted into the locking hole even when no key is inserted in the locking mechanism. Therefore, the convenience of the locking operation can be increased.
When a strike is applied from one side of the lock body, the slide lever on the side that was struck may retreat according to the clearance, but both slide levers will be The unlocking operation does not occur, and the reliability of locking is not impaired by providing the clearance.

In a U-shaped lock, the keyhole faces the lower surface of the central part of the lock case, and the Linder lock mechanism is built in with the axis extending vertically. At the inner end of the Linder part of this Linder lock mechanism, a rotating lever with an engaging protrusion in the radial direction is attached, and between the engaging protrusion of this rotating lever and the locking hole, a biasing spring is attached. Insert the biased slide lever, elastically protrude the tip of the lever into the locking hole at all times, and allow the lower end of the collar to be inserted. Then, it is inserted into the locking recess on the heel side provided only on the inside. Next, by removing the key from the cylinder locking mechanism, the cylinder portion is made non-rotating, and the slide lever having the tip portion fitted in the locking recess on the heel side is fixed.

Embodiments of the present invention will be described below with reference to the drawings.
1 is an exploded perspective view of the lock body portion, FIG. 2 is an exploded perspective view of the embodiment, FIG. 3 is a partially cutaway enlarged sectional view of the locking mechanism portion, and FIG. 4 is another embodiment regarding the slide lever. It is a disassembled perspective view shown.

In the figure, reference numeral 1 indicates a pair of left and right locking holes 2 on the upper surface, and as shown in FIG. Locking recesses 5 are provided at both ends of the lower portion so as to face each other, and a U-shaped ridge 6 that is locked to the cylinder locking mechanism 3 has a pair of engaging projections 7 erected in the radial direction. A rotating lever 9 fitted to the cylinder portion 8 at the inner end of the mechanism 3 and rotated integrally with each other is provided between the engaging protrusion 7 on the rotating lever side and the locking hole 2, and the tip portion 9 'Is a pair of left and right slide levers that are protruded so as to be able to enter and leave the lock hole 2 at all times, 10 is a biasing spring that constantly biases the slide lever 9 toward the lock hole 2, and 11 is fitted with the lock body 1. A matching case cover.

Next, the operation of this embodiment having the above-described configuration will be described with reference to FIG. 3. When the lower part of the U-shaped ridge 4 is inserted into the locking hole 2, the distal end portion 9 ′ protrudes into the locking hole 2. After the slide lever 6 is retracted at one end against the biasing spring 10, the slide lever 6 is automatically returned at the alignment position with the locking recess 5, and the tip 9 'is engaged so that a U-shape is formed at the position. Hook the lowered position of 閂 杆 4.
Next, when the key 12 of the cylinder lock mechanism 3 is removed, the cylinder portion 8 is fixed in a non-rotating manner, and both ends of the collar 4 are locked in the lock body 1.

In this embodiment, the lock holes 2 opened on the upper surface of the lock body 1 are provided with a reverse hook-shaped receiver 13 and a receiver spring 14 at their inner ends, and the lower end of the hook 4 is elastically moved. I try to support it. Therefore, the lock 4 is constantly pressurized upward, and the engagement position (locking position) between the lock recess 5 on the lock side and the tip 9 ′ on the slide lever side is the position of the receiving spring 14. It is kept constant by energizing.

As described above, the locking recess 5 is provided only in the lower part of the U-shaped ridge 4, and the cylinder locking mechanism 3 is provided in the lock body 1 with the key hole 3 'facing the lower surface. The rotating lever 6 with the engaging projection 7 is provided to be fitted, and a pair of left and right slide levers 9 urged by the urging spring 10 is interposed between the engaging projection 7 and the locking hole 2. In the U-type lock, both the pair of left and right slide levers 9 do not move to the unlocked position unless both sides of the lock body 1 are simultaneously hit from the side, and it is difficult to apply the hits. It is possible to reduce damage to the device itself. Further, by providing the locking recess 5 only in the lower part of the U-shaped ridge 4, the ridge 4 also has strength, is highly reliable when locked, and the ridge 4 with respect to the locking hole 2 Smooth attachment / detachment is possible.

Next, another embodiment in which the locking operability is improved for the pair of left and right slide levers 9 will be described with reference to FIG.
The rotating lever 6 is driven between a pair of engaging protrusions 7 raised from the rotating lever 6 and one end 15 ′ of a notch 15 provided on the slide lever 9 so as to fit the engaging protrusion 7. If the clearance C that allows the lower end portion 4 ′ of the collar 4 to be inserted into the locking hole 2 is allowed without allowing the slide lever 9 to move backward, the key 12 is inserted into the locking mechanism 3. Even if it is not done, the lower end portion 4 'of the collar 4 can be inserted into the locking hole 2, and the convenience of the locking operation is increased.

Since the slide lever 9 urged by the urging spring 10 returns after passing through the lower end 4 ′ of the ridge 4 as in the embodiment shown in FIGS. Switch to locked state.
4, the same reference numerals as those in the embodiment shown in FIGS.

The implementation of the present invention can be applied to bicycles and other two-wheeled vehicles. Moreover, the form of each part etc. is not limited only to the aspect of an Example along the objective of this invention.

It is a disassembled perspective view of a lock main-body part. It is a disassembled perspective view of an Example. It is a partially cutaway expanded sectional view of a locking mechanism part. It is a disassembled perspective view of another Example regarding a slide lever.

Explanation of symbols

1 Lock body 2 Lock hole 3 Cylinder lock mechanism (3 'key hole)
4 U-shaped scissors (4 'lower end)
5 Locking recess 6 Rotating lever 6
7 Engaging projection 8 Cylinder 9 Slide lever (9 'tip)
10 Biasing Spring 11 Case Cover 12 Key 13 Receptacle 14 Receptacle Spring 15 Notch (One End of 15 ′)
C Clearance

Claims (3)

A cylinder lock mechanism is built in with a key hole facing the center of the body, and a lock body with a pair of left and right lock holes on the top and a lower end fitted into the lock holes to lock the cylinder lock mechanism. In the U-shaped lock that is combined with the U-shaped scissors, a locking recess facing the inside is provided at the lower part of the scissors, and a pair of radial locks are provided at the inner end of the cylinder locking mechanism. A rotating lever with the engaging projection of the rotating lever is provided so as to rotate integrally with the cylinder portion, and a biasing spring is provided between the engaging projection on the rotating lever side and the locking hole, and the tip portion is provided. A pair of left and right slide levers that are always allowed to protrude into and out of the locking hole is interposed, and when the lower part of the flange is inserted into the locking hole, the tip of the slide lever retracts against the biasing spring. After allowing the lower end of the bag to be inserted, it automatically returns The slide lever is engaged with the locking recess, the key of the cylinder locking mechanism is pulled out, and the cylinder part is held non-rotating, thereby locking the both ends of the hook in the lock body. Features a U-shaped lock. The lock holes of the lock body are attached to the inner ends thereof with a receiving metal and a receiving spring for elastically supporting the end of the hook so that the lock position of the hook is held at a fixed position. The U-shaped lock according to claim 1. Between the pair of engaging protrusions raised on the rotating lever and one end of the notch provided on the slide lever so as to fit the engaging protrusion, the slide lever alone is allowed to move backward, The U-shaped lock according to claim 1, further comprising a clearance that allows passage of a lower end portion of the hook inserted into the locking hole.

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