JPS6023410Y2 - locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking device, and more particularly to a locking device suitable for use in a so-called lid lock for opening and closing the lid of a glove box in a vehicle interior.

Conventionally, various structures have been used and proposed for the above-mentioned lid locking device, but the typical type is one that controls the ratchet between the locking position and the unlocking position by the rotational position of a rotating body equipped with a cam. It is something to do.

Therefore, this type of operating knob is usually of a rotary operation type because it is necessary to rotate a rotary body, and it is therefore difficult to obtain variations in design and operating method.

A type in which the operating knob is reciprocated is also known, but this inevitably complicates the mechanism because it requires a mechanism to convert the linear motion of the operating knob into the rotational motion of a rotating body.

In view of such conventional devices, the present invention proposes a locking device that can control the position of the ratchet without using a rotary body with a cam, which was indispensable in the conventional device. A ratchet for holding and releasing a striker entering the entry opening is rotatably attached to the housing with a biasing force in the direction of releasing the striker, and the ratchet is locked in the lock position. A stopper part for holding the ratchet in the lock position is formed on the side opposite to the entry side of the striker, and the housing is engageable with the stopper part of the ratchet, and when engaged, the ratchet is moved into the striker. The housing supports a lock pin that locks in the holding position, normally moves and urges the lock pin to engage with the stopper portion, and the housing further has a cam surface that engages with the lock pin, allowing reciprocating operation. The cam surface supports an operating lever, and the lock pin moves to a non-engaging position with the stopper portion in response to the operation of the operating lever.

The invention will now be described with reference to the illustrated embodiments.

FIG. 1 shows an example of the mounting position of the locking device 1 of the present invention, which is installed on the upper side of a lid 2 of a glove box inside a vehicle interior.

The lid 2 can be opened and closed using its lower side as an axis, and the locking device 1 holds the lid 2 in the closed position, and
By swinging the operating lever 3 in the direction of arrow A, the lock is released and the lid 2 is opened.

The key rotor 5 makes the swinging operation of the operating lever 3 possible or impossible.

Note that the operating knob 31 of the operating lever 3 is located within the vertically elongated recess 2a of the lid 2 and does not protrude from the surface of the lid 2.

As shown in FIGS. 2 to 4, the housing 6 of the locking device 1 includes a lock portion 6a that supports the operating lever 3, the ratchet 7, etc., and a key rotor holding portion 6b that supports the key rotor 5. It has become.

The locking part 6a has a pair of parallel supporting walls 8, 8 and a plurality of connecting parts 9 connecting the supporting walls.
A U-shaped striker entry opening 11 into which a stationary striker 10 (FIG. 4) is received is formed at the tip.

The ratchet 7 is located between the support walls 8, 8 and the access opening 11
The support wall 8.8 is pivotally connected to the support wall 8.8 by a pin 12 at the lower part of the support wall 8.8, and a detachable portion 14 is formed between the pair of leg portions 13a and 13b.

The pin 12 also inserts and supports a torsion spring 15, one leg 15a of this spring 15 is attached to one leg 13a of the ratchet 7, and the other leg 15b is attached to the support wall 8.
They are respectively locked on the lower side, so that the ratchet 7 is urged to rotate in the direction of arrow C in FIG. 4.

Reference numeral 17 denotes a stopper wall that restricts the end of rotation of the ratchet 7, that is, the unlocked position, due to this spring force.
The striker 10 can be inserted and removed therein.

On the other hand, a stopper portion 18 is formed on a portion of the rear outer periphery of the ratchet 7, and a lock pin 19 can be engaged with and removed from this stopper portion 18.

The lock pin 19 is inserted into a long hole 20 formed in the support walls 8, 8 of the housing 6, and is prevented from being removed by, for example, its head 19a and a snap ring 21.

When this lock pin 19 is located at the end of the elongated hole 20 on the ratchet 7 side, it engages with the stopper portion 18 and holds the ratchet 7 in the locked position shown in FIG. 4 against the biasing force of the torsion spring 15. do.

At this time, the striker 10 is held within the engaging/disengaging portion 14 between the legs 13a, 13b.

The operating lever 3 locks the lock pin 19 into the stopper portion 18.
It has a cam groove 22 through which the lock pin 19 is inserted, and is inserted between the support walls 8, 8 of the housing 6 and pivoted by a pin 23. There is.

The cam groove 22 is shaped so that as the operating knob 31 of the operating lever 3 is moved from below to above, the lock pin 19 is moved from the end on the ratchet 7 side in the elongated hole 20 to the end on the opposite side. ing.

Reference numeral 24 denotes a torsion spring that biases the operation lever 3 to rotate in the direction of arrow C in FIG. Forced.

Further, in order to prevent interference with the ratchet 7, a longitudinal groove 26 is provided at the end of the operating lever 3 on the ratchet 7 side in the center of its thickness.

That is, the operating lever 3 has a bifurcated shape that sandwiches the ratchet 7 at the end on the ratchet 7 side, so that the ratchet 7 and the operating lever 3 do not interfere with each other.

The lock pin 19 is connected to the housing 6 as shown in FIG.
The lock portion 6a extends from the lock portion 6a to the key rotor holding portion 6b, and this extended end is substantially perpendicular and in contact with the tip of the body portion 27 inserted and supported by the key rotor holding portion 6b.

As is clear from FIG. 6, a linear groove 28 is bored in the body 27, and only when the direction of this groove 28 is aligned with the direction of the lock pin 19, the lock pin 19 is inserted into the long hole 20. can be moved within the groove 28 along.

In the present locking device 1 having the above configuration, the lid 2
It is assumed that the ratchet 7 is closed and the ratchet 7 is in the locked position shown in FIG.

At this time, the ratchet grips the striker 10 fixedly provided inside the glove box in its engaging/disengaging portion 14 and opens the lid 2.
I'm trying to prevent it from opening.

At this time, if the groove 28 of the body 27 and the lock pin 19 are perpendicular to each other as shown in FIG. 6B, the body 27 will prevent the lock pin 19 from moving, making it impossible to operate the operating lever 3.

In other words, it is locked.

To unlock, insert the key into the keyhole 29 of the key rotor 5,
The key rotor may be rotated 900 times together with the key to align the direction of the groove 28 and the lock pin 19 as shown in FIG. 6A.

When the operating lever 3 is moved in the direction of arrow A in this state, the lock pin 19 moves away from the ratchet 7 due to the action of the cam groove 22, and as a result, the lock pin 19 engages with the stopper portion 18 of the ratchet 7. comes off.

Then, the ratchet 7 instantaneously rotates to the unlocked position shown in FIG. 5 due to the elastic force of the torsion spring 15, and the grip of the striker 10 by the engaging/disengaging portion 14 is released.

Therefore, the lid 2 can be opened.

When the opened lid 2 is closed, the striker 10 presses the rear leg portion 13a of the ratchet 7, and as a result, the ratchet 7 is rotated to the lock position against the elastic force of the torsion spring 15.

During this rotation, the guide surface 30 on the outer periphery of the ratchet 7 temporarily moves the lock pin 19 in a direction away from the ratchet 7.

That is, since the lock pin 19 is indirectly urged toward the ratchet 7 by the torsion spring 24 of the operating lever 3, after the lock is released, it is in contact with the guide surface 30 as shown by the chain line in FIG. Therefore, when the ratchet 7 is pushed by the guide surface 30 as the ratchet 7 rotates, it moves in a direction away from the ratchet 7.

Then, the stopper part 18 of the ratchet 7 is connected to the lock pin 19.
When the lock pin 19 reaches the bottom of the torsion spring 24
Due to the elastic force of the torsion spring 15, the ratchet 7 is instantly moved toward the ratchet 7 side and positioned above the stopper part 18, and the ratchet 7 is held in the lock position against the elastic force of the torsion spring 15.

In other words, the initial locked state is restored.

As is clear from the above description, in the illustrated embodiment, the cam groove 22 is in contact with both sides of the lock pin 19, so the movement position of the lock pin 19 and the swing angle position of the operating lever 3 have a certain correspondence relationship. Yes, it is necessary to make sure that if one of them moves, the other also moves.

In particular, in order to smoothly follow the movement of the operating lever 3 side when the lock pin 19 side is moved by the guide surface 30 of the ratchet 7, the angle of the cam groove 22 with respect to the elongated hole 20, the vertical direction of the pin 23 and the elongated hole 20, etc. The distance, the strength of the torsion spring 24, etc. shall be set appropriately.

Next, in the embodiment shown in FIG. 7, the biasing force of the lock pin 19 toward the ratchet 7 is obtained by a leaf spring 32 inserted into one end of the elongated hole 20.

For this reason, the operating lever 3 is provided with only an outer cam surface 33 instead of the cam groove 22, and the inside of the cam surface 33 is simply an opening 3.
It is set at 4.

According to this embodiment, the lock can be released in the same manner as described above by the action of the cam surface 33.

Since the movement of the lock pin 19 that occurs during locking occurs within the opening 34, the movement of the lock pin is caused by the movement of the operating lever 3.
This has the advantage of not being transmitted to other people.

In order to bias the lock pin 19 toward the ratchet 7, other spring means than the leaf spring 32 can be used.

Although the above embodiment shows an example in which the lock pin 19 moves in parallel along the elongated hole 20, the same effect can be obtained even if this is replaced with a lock pin that pivots at one end and moves in a swinging motion. it is obvious.

Of course, the operating direction of the operating lever 3 can be reversed, and the operating lever can also be made of a reciprocating type and provided with a cam surface directly, or the reciprocating operating lever and a member having a cam surface can be interlocked. can.

It will be clear that the installation of the key rotor 5 is optional.

As described above, the lock device according to the present invention uses a lock pin to lock the ratchet in the locked position, and moves the lock pin from the engagement position with the stopper portion of the ratchet to the non-engaged position. Since the operating lever is provided with a cam surface, reliable locking and unlocking can be performed without using a rotating body such as a conventional cylindrical cam.

In particular, since the operating lever is operated in a reciprocating manner, it is possible to easily obtain an operating feeling and design different from those of the rotary operating type.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of the installed state of the lock device according to the present invention, Fig. 2 is an exploded perspective view of the main components of the lock device of the present invention, and Fig. 3 is a partially cutaway view of the housing in the assembled state. 4 is a sectional view taken along line IV-IV in FIG. 3, FIG. 5 is a sectional view showing an operating state different from that in FIG. 4, and FIGS. 6A and B are views of the key rotor and lock pin, respectively. FIG. 7 is a perspective view showing the relationship, and FIG. 7 is a sectional view of essential parts showing another embodiment of the present invention. 1...Lock device L 3...Operation lever,
6...Housing, 6a...Lock part, e b"" key rotor holding part, 7...Ratchet, 10. Track/strike, 11...Entry Opening, 15...Torsion spring, 18...
・Stopper part, 19... Lock pin, 22, 3
3...Cam groove (surface), 24...Torsion spring, 27...Body portion, 28...Groove.

Claims (1)

[Scope of utility model registration request] A ratchet for holding and releasing a striker that enters the entry opening is pivotally attached to a housing having an entry opening for the striker, and is pivotably biased in a direction to release the striker, and the ratchet is pivoted on the entry side of the striker. a stopper portion for holding the ratchet in the locked position on the opposite side thereof, and the housing further includes:
It supports a lock pin that can be engaged with the stopper part of the ratchet and locks the ratchet in the striker holding position when engaged, and an operating lever that can be operated in a reciprocating manner, and the lock pin is normally engaged with the stopper part. At the same time, the lock pin and the operating lever are interlocked via a cam surface provided on the operating lever, and in response to the operation of the operating lever, the lock pin is moved to a non-engaging position with the stopper part. A locking device characterized in that the locking device is configured to move.