JPH0816414B2 - Cylinder lock with cover - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cylinder lock with a cover used in, for example, an automobile.

2. Description of the Related Art For example, in some automobiles, a cylinder lock with a cover is attached to a rear end portion of a trunk lid.

In a cylinder lock with a cover, a cover that opens and closes the upper surface of the key cylinder is rotatably supported by a base that houses the key cylinder, and the cover is biased in the closing direction.

An example of this will be described with reference to FIGS. 12 to 14. A key cylinder 3 is housed in a base 2 attached to a trunk lid 1 in a state aligned with an upper surface of the base 2, and a cover 4 of the base 2 is mounted on the base 2. It is rotatably supported while being biased in the closing direction so as to cover the upper surface.

A stopper 5 is swingably supported on the upper surface of the key cylinder 3.

The stopper 5 is a key insertion hole 6 of the key cylinder 3.
A guide pin 8 is provided, and the cover 4 is opened until the locking portion 9 of the cover 4 engages with the locking portion 10 of the base 2, and then the key insertion hole 6 When the key cylinder 3 is rotated by the key with the key inserted in the
The guide pin 8 slides in the guide groove 11 on the back surface of the cover 4 to hold the cover 4 (this structure is disclosed in Japanese Utility Model Laid-Open No. 59-122354). It is shown).

Problems to be Solved by the Invention The stopper 5 requires a certain area due to the formation of the insertion hole 7, and since the guide pin 8 is provided, the height of the component is correspondingly increased. Therefore, in order to interpose the stopper 5 between the key cylinder 3 or the base 2 and the cover 4, it is necessary to make the base 2 large or to increase the height from the base 2 to the cover 4. There is a problem that it becomes large.

Further, since the guide pin 8 of the stopper 5 is always in the protruding state regardless of whether the cover 4 is open or closed, the guide pin 8 should not interfere with the cover 4 even when the guide pin 8 is not operating. Since it is necessary to form the escape portion in the cover 4, there is also a problem that the shape of the cover 4 becomes complicated.

The key insertion hole 7 formed in the stopper 5 is
When the cover 4 is opened, it is necessary to match the key insertion hole 6 of the key cylinder 3 with the key cylinder 3, the stopper 5, and the cover 4, and it is necessary to consider the movements of the three.
It becomes difficult to set the guide groove 11.

Therefore, the present invention provides a cylinder lock with a cover that can be downsized as a whole and that has a simple cover shape.

Means for Solving the Problems A cover for opening and closing the upper surface of the key cylinder is rotatably supported on a base accommodating the key cylinder, and the cover is biased in the closing direction to return the posture to the closed state. In the cylinder lock, a pin portion protruding from the upper surface of the base at the time of inserting the key is provided on the upper surface of the key cylinder, and a stopper that rotates together with the key cylinder is swingably embedded, and following the rotation trajectory of this pin portion. A guide standing wall is formed on the back surface of the cover, and a pin portion protruding from the upper surface of the base is engaged with the guide standing wall to hold the cover in an open state against the restoring force of the cover.

Action When the cover is opened and the key is inserted into the insertion hole of the key cylinder, the pin portion of the stopper projects.When the key cylinder is rotated and unlocked with the key in this state, the pin portion engages with the guide standing wall of the cover. When the cover is prevented from rotating in the closing direction and the key is removed, the pin portion of the stopper is released from the guide upright wall of the cover to close the cover.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 1 to 10, a well-known key cylinder 3 is rotatably housed in a rectangular base 2 attached to a trunk lid 1, and a stopper 12 is rotatably embedded in an upper surface of the key cylinder 3. Has been.

As shown in FIG. 2, the stopper 12 is housed by hooking a swing shaft 13 provided in the central portion into a groove 14 formed in the upper surface of the key cylinder 3 and storing the stopper 12. A key contact portion 15 provided in the key insertion hole 6 of the key cylinder 3 is provided on one end side, and a pin portion 17 protruding from the upper surface of the key cylinder 3 when the key 16 is inserted into the key insertion hole 6 is provided on the other end side. Has been formed.

Here, the groove 14 of the key cylinder 3 is formed to have a constant width so as to allow the stopper 12 to move in the longitudinal direction. When a stopper having a long overall length is used as shown by a broken line in FIG. The same effect as in (3) can be obtained in a short length.

An escape groove 18 for the pin portion 17 of the stopper 12 is formed around the key cylinder 3 on the upper surface of the base 2. Further, the key cylinder 3 has the stopper 12
The presser plate 19 is attached.

A support shaft for a cover 4, which will be described later, is provided at a corner of the upper surface of the base 2.
20 shaft holes 21 are provided, and a spring (not shown) is attached to the rear surface side of the base 2 of the shaft holes 21 to apply a restoring force in the closing direction to the cover 4.

Further, in order to hold the cover 4 in the open state on the base 2, the base 2 engages with the locking portion 22 provided on the cover 4 and the edge portion 24 of the cover 4 to engage the cover 4. A protrusion 23 is provided for restricting rotation in the direction opposite to the normal opening direction.

On the other hand, the cover 4 covers the upper surface of the base 2, and the support shaft 20 inserted into the shaft hole 21 of the base 2 on the back surface thereof.
And the projection 23 when the cover 4 is opened.
It is provided with an arcuate locking portion 22 that engages with the projection 23 after the cover 4 is lifted up from the base 2 by riding on the receiving side slope 26.

And, on the back surface of the cover 4, the stopper
A copying portion 27 is provided at a portion of the 12 facing the pin portion 17.

When the key cylinder 3 is rotated by the key 16 in the cover open state in which the cover 4 is opened and the engaging portion 22 of the cover 4 is engaged with the protrusion 23 of the base 2, the copying portion 27 is provided with the base 2 It has an inclined surface 28 on which the pin portion 17 of the stopper 12 protruding to the upper surface relatively rides. Around the inclined surface 28, there is provided a release surface 30 defined by an arcuate guide standing wall 29.

That is, when the pin portion 17 of the stopper 12 relatively moves up on the release surface 30, the cover 4 is separated from the upper surface of the base 2, and the protrusion 23 of the base 2 and the locking portion 22 of the cover 4 are engaged with each other. Is released and the cover 4 tries to return to the closing direction.
The guide standing wall 29 is locked to the pin portion 17 of the stopper 12, and the closing operation of the cover 4 is blocked (the cover half-open state).

The guide standing wall 29 is formed along the rotation locus of the pin portion 17 of the stopper 12, and a pin portion 17 of the stopper 12 should be formed between a part of the guide standing wall 29 and the back surface of the cover 4.
A guide slope 31 is provided so that the cover 4 does not open due to the interference of the pin portion 17 with the guide standing wall 29 even if the cover 4 is opened with the pin projecting. Further, on the upper surface of the base 2, there is provided a regulation projection 25 which is engaged with the guide standing wall 29 and regulates the unnecessary rotation of the cover 4 in the opening direction.

According to the above-described structure of the embodiment, the trunk lid 1 is provided with the key 16
When the cover 4 is opened by the occupant, the occupant opens the cover 4 until the engaging portion 22 of the cover 4 engages with the protrusion 23 of the base 2.

In this case, the receiving side slope 26 of the protrusion 23 allows the cover 4 to be smoothly engaged. Even when the occupant rotates the cover 4 with an excessive force, the guide standing wall of the cover 4 is
29 is brought into contact with the restriction protrusion 25 of the base 2 to prevent the cover 4 from excessively rotating.

Next, with the cover 4 open, press the key 16
When it is inserted from the hole 19a of 19 into the insertion hole 7 of the key cylinder 3, the swing shaft 13 of the stopper 12 in the stored state shown in FIG.
14 and slide the key contact part 15 of the stopper 12
The pin portion 17 of the stopper 12 is pushed by and protrudes from the upper surface of the base 2 (see FIG. 4).

That is, in the present embodiment, the central portion of the substantially V-shaped stopper 12 is swingably supported by the key cylinder 3, and the stopper 12 swings vertically in the key cylinder 3 when the key 16 is inserted. Thus, compared with the case where a simple rod-shaped stopper is used as the stopper 12, the planar occupying space of the stopper 12 and the swing angle required when the key 16 is inserted can be reduced. Furthermore, the stopper 12 can be moved along the upper surface of the key cylinder 12, and
By making the key contact portion 15 of 12 abut on the front surface side or the back surface side of the key 16, the planar occupied space of the stopper 12 is further reduced.

In this way, when the key 16 is inserted, the stopper
As shown in FIGS. 5 and 6, the pin portion 17 of 12 is in a state of protruding to the lower portion (a) of the inclined surface 28 on the rear surface of the cover 4.

Next, when the key 16 is rotated to the right, the pin portion 17
On the slope 28 as indicated by the arrow
To the entrance site (b) (see FIGS. 7 and 8). At the same time, the cover 4 pressed by the pin portion 17 rises by the height of the release surface 30, and the locking portion 22 of the cover 4 disengages from the protrusion 23, so that the guide standing wall 29 of the cover 4 contacts the pin portion 17. It rotates in the closing direction until it comes into contact, and becomes a half-open state (see Figures 9 and 10).

Then, when the key 16 is further rotated, the pin portion 17 slides on the release surface 30 along the guide standing wall 29 as shown by the arrow, and the pin portion 17 is rotated by the key lever. The trunk lid 1 is unlocked when the end portion (c) of 29 is reached.

After unlocking in this way, rotate the key 16 to the left,
Alternatively, when the key cylinder 3 is returned to the initial position by the action of the return spring of the key cylinder 3 and the key 16 is removed, the guide standing wall 29 is moved from the end portion (c) of the guide standing wall 29.
The pin portion 17 reaching the base end portion (d) of (3) is sunk under the base 2 due to the pivoting action of the stopper 12 about the swing shaft 13.
The engagement is released from the guide standing wall 29.

Therefore, the cover 4 automatically closes when the key 16 is removed.

In this way, by making the pin portion 17 of the stopper 12 function only when the key 16 is inserted using the stopper 12 which is a relatively small and simple-shaped component, the overall size of the lock is reduced, and This simplifies the shape of the copying portion 27 set on the back surface of the cover 4. Also, key 16
When inserting the, the projection 23 of the base 2 and the locking portion 22 of the cover 4
Since the cover 4 can be held in a fully opened state by engaging with, the key 16 can be inserted very easily.

 Next, FIG. 11 shows another embodiment of the present invention.

In this embodiment, the entire part along the guide vertical wall 29 is formed as the release surface 30, and the inclined surface 28 in the above-described embodiment is formed.
Etc. have been abolished.

Therefore, when the cover 4 is opened and the key 16 is inserted and the pin portion 17 of the stopper 12 projects, the pin portion 17 presses the release surface 30 at that time, so that the engagement portion 22 of the cover 4 and the projection 23 of the base 2 engage. When the cover 4 is released, the cover 4 changes from the fully opened state to the half opened state, and the guide standing wall 29 is locked to the pin portion 17.

Therefore, when the key 16 is inserted and the opening operation of the trunk lid 1 is stopped, the key 4 can be pulled out without rotating and the cover 4 can be removed.
Will be closed.

Of course, if the inserted key 16 is rotated, the trunk lid 1 can be opened as in the previous embodiment.

In this way, the shape of the copying portion 27 on the back surface of the cover can be simplified more than in the above-described embodiment, and a function which is one step further can be added.

Since the other structure and operation are similar to those of the above-described embodiment, the same parts are designated by the same reference numerals and the description thereof will be omitted.

EFFECTS OF THE INVENTION As described above, according to the present invention, the stopper having the pin portion protruding from the upper surface of the base when the key is inserted is embedded in the upper surface portion of the key cylinder so as to be swingable. There is an effect that it is possible to make the shape of the cover side simple because it is not necessary to process the relief part required on the cover side when the pin portion of the stopper is always protruding. .

[Brief description of drawings]

1 to 11 show an embodiment of the present invention, FIG. 1 is an exploded perspective view, FIG. 2 is a perspective view of a stopper, and FIGS. IV) -III (IV) cross-sectional view, FIGS. 5, 7, 9 are partial plan views showing operating conditions, and FIGS. 6, 8, 10 are VI-VI in FIGS. 5, 7, 9 respectively. Line, VIII-V
Sectional views taken along line III and XX, FIG. 11 is a perspective view corresponding to FIG. 1 of another embodiment, and FIG. 12 is a plan explanatory view of a conventional technique, FIG.
FIG. 14 is a perspective view of a conventional stopper, and FIG. 14 is a perspective view of a vehicle rear portion. 2 ... Base, 3 ... Key cylinder, 4 ... Cover, 12
…… Stopper, 17 …… Pin part, 29 …… Guide standing wall.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mikio Masaki 2-8-2 Kamata, Ota-ku, Tokyo Domestic metallurgical industry Co., Ltd. (72) Inventor Riichi Kobayashi 2-82 Kamata, Ota-ku, Tokyo No. Domestic Metal Industry Co., Ltd. (72) Inventor Katsushi Furuarai 2-8-2, Kamata, Ota-ku, Tokyo Domestic Metal Industry Co., Ltd. (56) Reference JP 62-178673 (JP, A)

Claims (4)

[Claims] 1. A cover for opening and closing an upper surface of a key cylinder is rotatably supported on a base accommodating the key cylinder,
A cylinder lock with a cover in which the cover is biased in the closing direction to return to the closed state, a pin portion projecting from the upper surface of the base when the key is inserted is provided on the upper surface of the key cylinder, and the cover rotates with the key cylinder. A stopper is embedded so that it can swing, and a guide standing wall is formed on the back surface of the cover following the rotation locus of the pin, and a pin protruding from the upper surface of the base engages with this guide standing wall, A cylinder lock with a cover, which keeps the cover open against the restoring force. 2. The key of the stopper 12, which is formed in a substantially V-shape, has a central portion swingably supported by the key cylinder 3, and has one end abutting against the inserted key 16. A contact portion 15 is formed, and at the other end, a pin portion 17 protruding from the upper surface of the base 4 when the key 16 is inserted is formed, and the pin portion 17 is movably installed along the upper surface of the key cylinder 3. A cylinder lock with a cover according to claim 1. 3. The cylinder lock with a cover according to claim 2, wherein the key contact portion 15 of the stopper 12 contacts the front side or the back side of the key 16. 4. A protrusion 23 is provided on the upper surface of the base 2, and a locking portion 22 for engaging the protrusion 23 to hold the cover 4 in a fully opened state is provided on the back surface of the cover 4, and a base. Four
The pin 17 protruding from the upper surface pushes up the cover 4,
A release surface 30 for releasing the engagement between the projection 23 and the locking portion 22 is provided, and when the projection 23 and the locking portion 22 are disengaged, the pin portion 17 engages with the guide standing wall 29 to remove the cover 4. The cylinder lock with cover according to any one of claims 1 to 3, wherein the cylinder lock is held in a half-opened state.