JPH0816415B2 - 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. 14 to 16. A key cylinder 3 is accommodated in a base 2 attached to a trunk lid 1 in a state of being aligned with an upper surface of the base 2, and a cover 4 of the base 2 is attached to 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 cover 4 does not interfere with the cover 4 even when the guide pin 8 is not operating. It is necessary to form the relief portion in the cover 4, and 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 this cover is provided with a cover that is biased in the closing direction and returns to the closed position. In the cylinder lock, a pin portion protruding from the upper surface of the base is provided on the upper surface of the key cylinder, and a stopper that rotates together with the key cylinder is swingably embedded, while Following this, a guide standing wall is formed on the back surface of the cover, and on this guide standing wall,
The cover is held in an open state by engagement of the pin portion projecting from the upper surface of the base, and further, on the back surface of the cover, an inclined surface on a locus that the pin portion relatively traverses when the cover is closed. Is provided.

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.

Here, even if the pin portion is still protruding from the upper surface of the cover, the pin portion is pushed into the key cylinder by the inclined surface, so that the pin portion does not interfere with the guide standing wall or the like, and the opening / closing operation of the cover is prevented. No hindrance will occur.

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 The pin 17 of the stopper 12 protruding to the upper surface is provided with a riding slope 28 on which the pin 17 relatively rides. In addition, an arcuate guide standing wall is provided around the riding slope 28.
A release surface 30 partitioned into 29 is provided.

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 a stopper 12 when the key 16 inserted in the key cylinder 3 is rotated with the cover 4 half opened.
It is formed in an arc shape along the rotation locus of the pin portion 17.

Then, when the cover 4 is closed, it runs on the locus of the pin portion 17 of the stopper 12 that relatively crosses the guide standing wall 29 and between the release surface 30 and the back surface of the cover 4 as an inclined surface. An inclined surface 31 for use is formed, and a guide inclined surface 32 as an inclined surface is formed on the guide standing wall 29 above the release surface 30 by cutting off the general portion (see FIG. 1a).

Incidentally, on the side opposite to the guide inclined surface 32 of the guide standing wall 29, even if the cover 4 is opened with the pin portion 17 of the stopper 12 still protruding, the pin portion 17 interferes with the guide standing wall 29 and the cover 4 is removed. A guide slope 33 is provided to prevent a situation where the guide does not open.

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 into the insertion hole 7 of the key cylinder 3 from the hole 19a of 19, the swing shaft 13 of the stopper 12 in the stored state shown in FIG.
Slides in the groove 14 and the key contact portion 15 of the stopper 12 is pressed by the key 16 so that the pin portion 17 of the stopper 12 projects from the upper surface of the base 2 (see FIG. 4).

Therefore, the same effect as in the case of using a large stopper having a long length can be obtained by the relatively small stopper 12, so that the occupied space can be 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 riding slope 28 on the rear surface of the cover 4.

Here, for example, the key 16 inserted into the key cylinder 3 to stop opening the trunk lid 1
When the pin 16 is pulled out without being rotated, the escape direction of the pin portion 17 is opened by the escape inclined surface 31, so that the pin portion 17 can be prevented from remaining protruding.

Then, when the key 16 is rotated to the right, the pin 17
Rides on the riding slope 28 as indicated by the arrow and reaches the entrance site (b) of the release surface 30 (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 guided by a key lever (not shown) that rotates with this. When the end portion (c) of the standing wall 29 is reached, the trunk lid 1 is unlocked.

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.

By the way, it is conceivable that when the key 16 is removed from the key cylinder 3, the stopper 12 does not rotate smoothly around the swing shaft 13 and the pin portion 17 remains protruding. Even in such a case, since the pin portion 17 relatively crossing the guide standing wall 29 is pushed into the key cylinder 3 by the guide inclined surface 32, the cover 4 may not be closed properly. Absent.

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 the cover The simplification of the shape of the copying portion 27 set on the back surface of No. 4 is realized.

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

In this embodiment, the guide inclined surface 32 is a guide standing wall.
The rising position of the inclined surface is generally set so that the sliding contact line G of the pin portion 17 of the stopper 12 connected from the general portion 29a of 29 (at the position of radius l from the rotation center 0 of the key cylinder 3) draws a constant arc. It is set to be offset from the portion 29a.

Therefore, in the guide standing wall 29 in this case, the key cylinder 3 is provided in a portion from the general portion 29a to the guide inclined surface 32.
Since a continuous sliding contact line G is secured at a position of a radius 1 from the center of rotation of the pin 17, the pin portion 17 can smoothly slide along the guide standing wall 29 and is unnecessary when the key 16 of the cover 4 is rotated. Fine rotation can be prevented (12th, 13th
See figure).

Thus, the key 16 generated in the previous embodiment
Since it is possible to prevent the cover 4 from being slightly rotated during the rotating operation, the operation feeling can be improved.

Since the other structure and operation are the same as 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. In addition, there is an effect that it is not necessary to process the clearance portion required on the cover side when the pin portion of the stopper is always protruding, and the shape on the cover side can be simplified.

Further, since the inclined surface is provided on the back surface of the cover on the locus that the pin portion relatively crosses when the cover is closed, the pin portion should be removed if the key is removed from the key cylinder. Even if the pin portion is still protruding from the upper surface of the cover, there is an effect that the pin portion is pushed into the key cylinder by the inclined surface and does not hinder the opening / closing operation of the cover.

[Brief description of drawings]

1 to 13 show an embodiment of the present invention, FIG. 1 is an exploded perspective view, FIG. 1a is an enlarged perspective view of an essential part in FIG. 1, FIG. 2 is a perspective view of a stopper, and FIGS. Sectional views taken along the line III (IV) -III (IV) in FIG. 1 showing the operating states of the stoppers, respectively.
Figures 5, 7, and 9 are partial plan views showing the operating status, and Figures 6, 8, and 10
The figure is a cross-sectional view taken along lines VI-VI, VIII-VIII, and XX of FIGS. 5, 7, and 9, respectively, and FIG. 11 is an enlarged perspective view of an essential part corresponding to FIG. 1a of another embodiment. , Fig. 12 and 13 show XII-XII line and XI of Fig. 11, respectively.
FIG. 14 is a plan view of a conventional technique, FIG. 15 is a perspective view of a conventional stopper, and FIG. 16 is a perspective view of a rear portion of a vehicle. 2 ... Base, 3 ... Key cylinder, 4 ... Cover, 12
…… Stopper, 17 …… Pin part, 29 …… Guide standing wall, 31…
… Slope for escape (slope), 32 …… Slope for guide (slope).

 ─────────────────────────────────────────────────── ─── 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 (3)

[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,
In 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 protruding 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. While the stopper is embedded so as to be swingable, a guide standing wall is formed on the back surface of the cover in accordance with the rotation locus of the pin portion, and the guide standing wall engages with the pin portion protruding from the upper surface of the base. A cylinder lock with a cover, wherein the cover is held in an open state, and further, an inclined surface is provided on a back surface of the cover on a locus which the pin portion relatively traverses when the cover is closed. . 2. The cylinder lock with cover according to claim 1, wherein the inclined surface is formed on at least one side surface of the guide standing wall. 3. The inclined surface is formed so that a sliding contact line between the guide standing wall and the pin portion draws a constant arc including the general portion of the guide standing wall. A cylinder lock with a cover according to item 2.