JPS6024847Y2 - cylinder lock - Google Patents

Description

[Detailed description of the invention] This invention relates to cylinder locks, and is particularly suitable for helmet locks on motorcycles, requiring a key only when unlocking the lock, and eliminating the need for a key when locking the lock. This is what I did.

Recently, some motorcycles are equipped with a cylinder lock for helmet locking.

This cylinder lock is extremely useful in preventing helmet theft when the driver leaves the vehicle.

Conventionally, this type of cylinder lock has been designed to be unlocked and locked by key operation, making operation cumbersome. After the helmet is unlocked and the helmet is removed, it cannot be left unlocked, so each time the helmet is latched, the lock must be unlocked, making the operation more troublesome. there were.

This idea aims to eliminate the above-mentioned drawbacks,
A cylinder that is easy to operate by having a hook for hanging a helmet so that the key can be taken out in an unlocked state, and the hook can be put into a locked state by pressing the hook without using a key. It provides a lock.

This invention will be explained in detail below with reference to embodiments shown in the drawings.

A body 1 having a substantially elongated oval cross-sectional shape is provided, and a rotor storage portion las protrudes forward on the upper front side of the body, a cam storage portion lb on the back side of the rotor storage portion 1a, a bolt attachment portion 1c in the center portion, and a lower portion. A hook attachment part 1d is formed on the side.

The rotor storage portion 1a has the same structure as the conventionally known structure.
When the rotor 2 with a built-in tumbler (not shown) is rotatably stored and a key (not shown) is inserted, the tumbler
is retracted from a groove 1a1 formed in the rotor storage portion 1a, making the rotor 2 rotatable.

A protrusion 2a is formed at the rear end of the rotor 2, and the protrusion 2a is engaged with an engagement groove 3a of a cam 3 that is rotatably incorporated into a cam storage portion 1b, so that they rotate together. ing.

The cam 3 has a substantially cylindrical shape as shown, and has a stepped portion 3b at its upper rear end and a semicircular retaining portion 3c projecting inward.

A spring 4 is compressed in the space between the step portion 3b and the inner wall of the body 1, and the cam 3 is biased to the state shown in FIG.
The rotor 2 engaged with the cam 3 is in the locked position (locked position)
is energized.

Therefore, when the key is inserted and the rotor 2 is placed in the unlocked position and the key is released, the rotor 2 automatically returns to the locked position.

At the rear of the cam 3, an upper retaining portion 5a of the ratchet 5 rotatably fitted to the bolt attachment portion 1c is positioned so as to engage and disengage from the end surface of the cam engaging portion 3C. When the ratchet 2 is rotated to the unlocked position and the cam 3 is rotated counterclockwise in FIG. 2 against the spring 4, the ratchet 5 is rotated clockwise.

The central support portion 5b of the ratchet 5 has a bottom mounting portion 1.
A return spring 6 is installed between the ratchet 5 and the ratchet 5 to urge the ratchet 5 counterclockwise.

Below the lower side portion 5c of the ratchet 5 is a hook attachment portion 1.
The rear part 9 of the hook 9 rotatably attached to the pin 8 of d
a is positioned.

The front side part 9b of the hook 9 projects in an L-shape from the lower front side of the body 1, and the upper end part 9b1 of the hook 9 is configured to engage and disengage from the engagement groove 1e protruding from the lower side of the rotor storage part 1a, so that the front part 9b is L-shaped. A helmet (not shown) is attached to the front end 9b of the helmet.

A return spring 1 is attached to the pin 8 that pivotally supports the hook 9.
0 is wound, the center part of the return spring 10 is brought into contact with the lower surface of the hook rear side part 9a, the hook rear side part 9a is urged upward, and the entire hook 9 is urged clockwise. There is.

The upper surface of the rear end of the hook rear side portion 9a is configured to engage with and disengage from the lower end of the lower side portion 5c of the ratchet 5, as shown in FIG.
When in the locked position, it engages with the ratchet lower part 5c, but when the ratchet 5 rotates clockwise when unlocking, the engagement is released, and the hook 9 is rotated by the return spring 10, and the hook 9 is rotated to the rear side of the hook. The portion 9a is rotated upward to be in an open state.

12 is a set plate that is attached to the rear end opening of the body 1, and 13 is a bolt that attaches this device to the vehicle body. With the hook 9 in the open state, bolt attachment portion 1 is inserted from the front
I am trying to attach it by passing it through c.

In the cylinder lock described above, when the lock is locked, the lower end surface of the lower part 5c of the ratchet 5 is in the state shown in the figure.
The upper end surface of the rear end portion 9a is locked, and the front side portion 9b of the hook 9 is secured.
The upper end portion 9b is in a locked state engaged with the engagement groove 1e of the body 1.

When the key is inserted into the rotor 2 and rotated to the unlocked position during locking, the cam 3 rotates against the spring 4 and engages the engaging portion 3c.
presses the upper engaging portion 5a of the ratchet 5 and rotates the ratchet 5 clockwise in FIG.

Therefore, the lower side part 5C disengages from the hook rear side part 9a, the hook 9 is rotated by the return spring 10, and the hook front side part 9b is rotated downward, as shown by the chain line in FIG. , becomes open.

In the open state, when the key is released, the cam 3 is returned to its original position by the spring 4, and the rotor 2 returns to the locked position.

However, the waist ratchet 5 has a hook rear side portion 9 that protrudes upward.
It is locked by the end face of a and does not return to its original position.

To return the hook 9 to the locked position, push the front side portion 9b upward.

By operating the hook 9, the rear side portion 9a moves downward, and the unlocked ratchet 5 is rotated counterclockwise by the return spring 6, and the stopper 1 of the body 1 is rotated.
The upper retaining portion 5a is engaged with f to stop.

At this stop position, the lower surface of the ratchet lower part 5c is engaged with the upper surface of the hook rear part 9a, and the hook is in a locked state.

As is clear from the above explanation, according to the cylinder lock of this invention, the key can be removed while the helmet locking hook remains in the open position, and the lock can be left in the open position while driving. be able to.

Furthermore, the lock can be automatically locked by simply pushing up the hook without using a key, and has the advantage of being extremely easy to operate.

Furthermore, since the hook of the helmet hanging part is L-shaped, it has the advantage of being easy to hang.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of the cylinder lock according to this invention;
The figures are a left side view of FIG. 1, FIG. 3 is a right side view of FIG. 1, and FIG. 4 is a right side view of FIG. 3. 1...Body 2.Song/rotor, 3.Song cam, 4...Spring, 5.Song/ratchet, 6
...Four turn spring, 8. Song Zen, 9. Song hook, 10.....Return spring.

Claims (1)

[Claims for Utility Model Registration] A rotor that is housed in a tenon and is rotated to the unlocked position by key operation; and a rotor that is engaged to co-rotate with the rotor and moved to the locked position together with the rotor by a spring. A cam that is biased, a ratchet that is rotated in conjunction with the cam when it operates to the unlocked position and is biased to the locked position by a return spring, and a central portion that is pivotably supported on the body. The upper end of the L-shaped hook on the front side that protrudes from the body is engaged with and disengaged from the retaining groove of the body, and the upper surface of the rear end of the rear side is engaged with and disengaged from the lower end of the lower side of the ratchet. and is biased to the unlocked position by a return spring wound around the spindle, and the rear upper surface of the hook and the lower end of the ratchet are engaged when the hook is in the locked position. When the ratchet is rotated to the unlocked position by key operation, the engagement with the hook is released, and the hook is rotated to the unlocked position by the return spring. It engages with the bottom end of the lower side and locks the ratchet in the unlocked position, while when the hook is rotated to the locked position by pressing the hook, the unlocked ratchet is rotated by the return spring and moves to the locked position. A cylinder lock characterized in that a lower side end engages with an upper surface of a rear end of the hook to lock the hook in a locked position.