JP4415261B2 - Lock / unlock device - Google Patents

Description

  The present invention relates to a lock / unlock device including a cam and a pin.

FIG. 6 shows a vehicle storage device provided with the conventional lock / unlock device 1.
The vehicle storage device includes a storage device main body 4, a door 5, a lock (heart cam) 2 that is swingably attached to the storage device main body 4, and a pin 3 that is provided on the door 5 and that can be engaged with and disengaged from the lock 2. Have. As shown in FIG. 7, the lock 2 includes a posture control unit 2 a provided in the heart shape portion and a posture control unit 2 b provided around the heart shape portion.
As shown in FIG. 6, when the door 5 is in a closed state (solid line state in FIG. 6), the pin 3 is engaged with the lock 2 and the door 5 is not opened.
When the door 5 in the closed state is pushed, the pin 3 moves relative to the lock 2. When the pushing load is removed, the door 5 is rotated in the opening direction by the biasing force of the door biasing spring (not shown), the pin 3 is moved in the direction of coming out of the lock 2, and the door 5 is opened.
When the door 5 in the open state (two-dot chain line state in FIG. 6) is rotated in the closing direction, the pin 3 moves to the back side of the lock 2. When the load pushing the door 5 in the closing direction is removed, the door 5 is rotated in the opening direction by the biasing force of the door biasing spring, and the pin 3 is engaged with the lock 2.

However, the conventional lock / unlock device 1 has the following problems.
As shown in FIG. 7, since the positions of the swing center 2c and the center of gravity 2d of the lock 2 are different, the lock 2 is displaced due to inertia or the weight of the lock 2 and may cause a malfunction.
There are also the following problems. Hereinafter, the problem will be described with reference to FIGS.
The lock 2 shown in FIG. 7 is used when the pin 3 draws a rotation locus having a radius of 36 mm. It is desirable that the lock 2 can be used even when the pin locus is different (in this case, a straight locus, a locus having a radius of 18 mm).
In the lock 2, when the pin 3 enters the portion of the lock operation range (vertical) shown in FIG. 7, the lock / unlock device 1 does not work properly unless the pin 3 moves along the locus indicated by the two-dot chain line. . Therefore, even when the locus of the pin 3 is different, the movement must be close to the locus of R36 within the lock operation range (vertical). For this purpose, different trajectories (straight lines or R18 trajectories) are arranged so as to overlap with the trajectory of R36 on the center line of the lock operation range (vertical) or the line L close to the center line (the distance and the inclination are equal) ( FIG. 8). As shown in FIG. 9, the distance from R36 and the angle with respect to R36 shift (the values of δ and θ increase) as the distance from the overlapping point increases (the value of x in FIG. 9 increases).
In this arrangement, the pin 3 interferes with the posture control unit 2b around the heart-shaped portion and cannot engage with the lock 2 with the straight shape of the lock 2 in the case of R36, whether it is a straight locus or an R18 locus. In order that the lock 2 of R36 can be used also for the locus of straight lines and the locus of R18, the shape of the attitude control unit 2b must be as shown in FIG. By using the shape shown in FIG. 10, the lock 2 can be used in the range where the locus of the pin 3 is a straight line from R18.
However, if the shape of the posture control unit 2b is changed, the contact angle of the pin 3 with the lock 2 becomes large at the point A when used in the locus of R18 and at the point B when used in the linear locus. As a result, a large resistance is felt during operation. This occurs because points A and B are far from line L.
JP 2002-213135 A

The first problem to be solved by the present invention is that the lock is displaced by inertia or its own weight.
The second problem to be solved by the present invention is that the lock shape depends on the locus of the pin, and it is difficult to use the lock for another pin locus.
A first object of the present invention is to provide a lock / unlock device that can prevent a lock from being displaced due to inertia or its own weight.
A second object of the present invention is to provide a lock / unlock device that can handle various pin loci with a lock having the same shape.

The present invention for achieving the above object is as follows.
(1) (a) A heart-shaped portion provided with a locking portion, and a cam passage forming an inlet-side cam passage to the locking portion and an outlet-side cam passage from the locking portion between the heart-shaped portion A lock with a forming part;
(B) a pin that can be engaged with and disengaged from the locking portion of the heart-shaped portion of the lock;
Have
The heart-shaped part and the cam passage forming part of the lock are provided on the same plane,
The pin enters the lock, passes through the inlet side cam passage of the cam passage forming portion, engages with the engaging portion of the heart-shaped portion, and passes through the outlet side cam passage of the cam passage forming portion and moves the lock. To come out,
The lock / unlock device, wherein a plurality of the heart-shaped portion and the cam passage forming portion of the lock are provided in a circumferential direction of the lock.
(2) A doorway to the lock of the pin is provided between the adjacent heart-shaped portions,
The pin enters the lock from the entrance of the lock, passes through the entrance-side cam passage of the cam passage forming portion, engages with the locking portion of the heart-shaped portion, and exits the cam passage of the cam passage forming portion. The locking / unlocking device according to (1), wherein the locking / unlocking device is configured to pass out of the lock through an exit of the lock.

In the lock / unlock device of (1) above, since a plurality of heart-shaped portions and cam passage forming portions are provided in the circumferential direction, by arranging the heart-shaped portions and cam passage forming portions over the entire circumference of the lock, It is possible to place the lock center of gravity on the center of rotation of the lock with the operating range of the lock being 360 °. Therefore, by disposing the lock gravity center on the lock rotation center, it is possible to prevent the lock from being displaced by inertia or its own weight.
In addition, since a plurality of heart-shaped portions and cam passage forming portions are provided in the circumferential direction, in order for the lock / unlock device to operate normally next, between the adjacent heart-shaped portion and the cam passage forming portion. The pin may be returned to the entrance of the entrance cam passage, and it is not necessary to return the pin to the entrance of the original entrance cam passage where the pin has entered. Therefore, the posture control unit (posture control unit 2b in FIG. 7) around the heart-shaped portion, which has been conventionally required, becomes unnecessary. As a result, it becomes possible to cope with various pin loci with the lock having the same shape (because the distance from the line L to the points A and B in FIG. 10 is shortened).
In the lock / unlock device of the above (2), since the entrance to the lock of the pin is provided between the adjacent heart-shaped portions, the exit of the lock and the next entrance can be overlapped. Therefore, it is sufficient to return the pin to the entrance of the entrance side passage between the adjacent heart-shaped portion and the cam passage formation portion, and it is not necessary to return the pin to the entrance of the original entrance side cam passage where the pin has entered. For this reason, it is possible to prevent an excessive operation load from being applied as compared with the conventional case.

A lock / unlock device according to an embodiment of the present invention will be described with reference to FIGS.
The lock / unlock device 10 according to the embodiment of the present invention is provided, for example, in a vehicle storage device, a vehicle accessory device, a cup holder device with a vehicle door, or the like. However, the lock / unlock device 10 may be provided in a device other than the above devices.

As shown in FIG. 1, the lock / unlock device 10 includes a heart-shaped portion 21 having a locking portion 21a, and an inlet-side cam passage 23 and a locking portion between the heart-shaped portion 21 and the locking portion 21a. The lock 20 includes a cam passage forming portion 22 that forms an outlet-side cam passage 24 from 21 a and a pin 30 that can be engaged with and disengaged from the lock 20.
The rotation center P of the lock 20 is in the center of the lock 20 in a front view of the lock 20. The lock 20 is made of resin, for example. The center of gravity of the lock 20 is on the rotation center P when the lock 20 is viewed from the front.

A plurality of heart-shaped portions 21 are provided on the lock 20. A plurality of heart-shaped portions 21 are provided in the circumferential direction of the lock 20. The number of heart-shaped portions 21 provided in the lock 20 may be two, three as shown in FIGS. 1 to 4, or four as shown in FIG. 5. It may be 5 or more. An entrance 25 to the lock 20 of the pin 30 is provided between the adjacent heart-shaped portions 21, and the exit 25b of the pin 30 and the next entrance 25a overlap as shown in FIG.
The shape of the heart-shaped part 21 is a heart shape or a substantially heart shape when viewed from the front. The heart-shaped portion 21 includes a first surface 21b that faces the inlet-side cam passage 23 and the outlet-side cam passage 24, and second and third surfaces 21c that do not face the inlet-side cam passage 23 and the outlet-side cam passage 24. , 21d.

The locking portion 21a is provided in the middle portion of the first surface 21b.
The second surface 21 c is an inclined surface that is inclined from the lower end of the heart-shaped portion 21 to the right side and the first surface 21 b side in a front view of the lock 20. The second surface 21c may be a flat surface, but the contact angle of the pin 30 with respect to the second surface 21c is constant (including substantially constant) regardless of the position of the pin 30 on the second surface 21c. Therefore, it is desirable that the curved surface has one or more curvatures.
The third surface 21d is an inclined surface that is inclined to the left side and the first surface 21b side from the lower end of the heart-shaped portion 21 when the lock 20 is viewed from the front. The third surface 21d may be a flat surface, but the contact angle of the pin 30 with respect to the third surface 21d is constant (including substantially constant) regardless of the position of the pin 30 on the third surface 21d. Therefore, it is desirable that the curved surface has one or more curvatures.

  A plurality of cam passage forming portions 22 are provided in the lock 20. The cam passage forming portion 22 forms an inlet side cam passage 23 and an outlet side cam passage 24 between the first surface 21 b of the heart cam shape portion 21. The cam passage forming portion 22 is provided on the radial center P side of the lock 20 with respect to the heart cam shape portion 21. A plurality of cam passage forming portions 22 are provided in the circumferential direction of the lock 20. The number provided in the lock 20 is the same as the number of heart-shaped portions 21 provided in the lock 20. The plurality of cam passage forming portions 22 may be formed in series, or may be provided apart from each other (in the illustrated example, a case is shown in which each is formed in series).

The entrance-side cam passage 23 is a passage located between the first surface 21b of the heart cam shape portion 21 and the cam passage formation portion 22 and located on the right side of the locking portion 21a in the front view of the lock 20. is there. The inlet-side cam passage 23 is a passage from the inlet 25a of the lock 20 to the locking portion 21a.
The outlet-side cam passage 24 is a passage located between the first surface 21b of the heart cam shape portion 21 and the cam passage formation portion 22 and located on the left side of the locking portion 21a in the front view of the lock 20. is there. The outlet-side cam passage 24 is a passage from the locking portion 21a to the outlet 25b of the lock 20.

  The pin 30 can be engaged with and disengaged from the lock 20. The pin 30 that has entered the lock 20 from the inlet 25a of the lock 20 reaches (engages) the engaging portion 21a through the inlet-side cam passage 23, passes through the outlet-side cam passage 24, and exits the lock 20 from the outlet 25b. Go out (leave).

Here, the operation of the embodiment of the present invention will be described with reference to FIGS.
When the pin 30 moves toward the lock 20 (upward in the figure), the pin 30 goes directly to one of the plurality of inlets 25a of the lock 20 or of the plurality of heart cam shapes 21. It corresponds to one second surface 21c or third surface 21d. When the pin 30 hits the second surface 21c or the third surface 21d, since the traveling direction of the pin 30 and the second surface 21c or the third surface 21d are angled, the lock 20 is connected to the pin 30. Is rotated around the rotation center P. When the pin 30 hits the second surface 21c or the third surface 21d, the lock 30 is rotated while rotating the lock 20 (as shown in FIG. 3A, the pin 30 locks when the pin 20 hits the second surface 21c. 20 is rotated clockwise in front view, and when the pin 20 hits the third surface 21d as shown in FIG. 3B, the lock 20 is rotated counterclockwise in front view). Reach the entrance 25a.
The pin 20 enters the inlet side cam passage 23 from the inlet 25a of the lock 20 and advances while rotating the lock 20 as shown in FIG.
Next, when the pin 30 removes the load approaching the center P of the lock 20 and moves in the direction away from the center P of the lock 20 (downward in the drawing) (usually, the pin 30 has a center P of the lock 20). The pin 30 moves in the direction away from the rotation center P of the lock 20 when the approaching load is removed, and the pin 30 rotates the lock 20 as shown in FIG. 4B. The locking portion 21a is reached while being locked, and the locked state is reached.

By moving the pin 30 in the direction approaching the rotation center P of the lock 20 from the locked state, the pin 30 passes through the outlet-side cam passage 24 while rotating the lock 20 as shown in FIG.
Next, when the pin 30 removes the load approaching the lock rotation center P and, conversely, moves in a direction away from the lock rotation center P (downward in the figure), as shown in FIG. The lock 20 is rotated toward the outlet 25b.
When the pin 30 is further moved away from the lock rotation center P, the pin 30 reaches the outlet 25b as shown in FIG. 4E, and goes out of the lock 20 from the outlet 25b.
When the pin 30 moves toward the lock 20 again, the pin 30 goes directly to one of the plurality of inlets 25a of the lock 20 or one second surface 21c of the plurality of heart cam-shaped portions 21. Or it hits the 3rd surface 21d, and repeats below.

Next, the operation of the embodiment of the present invention will be described.
Since a plurality of heart-shaped portions 21 and cam passage forming portions 22 are provided in the lock circumferential direction, the operating range of the lock 20 can be increased by arranging the heart-shaped portions 21 and cam passage forming portions 22 over the entire circumference of the lock 20. The lock gravity center can be arranged on the lock rotation center P at 360 °. Therefore, by disposing the lock gravity center on the lock rotation center P, it is possible to prevent the lock 20 from being displaced due to inertia or its own weight.
In addition, since a plurality of heart-shaped portions 21 and cam passage forming portions 22 are provided in the circumferential direction, the next heart-shaped portion 21 and cam passage forming portion are used for the normal operation of the lock / unlock device 10. The pin 30 may be returned to the inlet 25a of the inlet side cam passage 23 between the pin 22 and the pin 30 does not need to be returned to the inlet 25a of the original inlet side cam passage 23 into which the pin 30 has entered. Therefore, the posture control unit (posture control unit 2b in FIG. 7) around the heart-shaped portion, which has been conventionally required, becomes unnecessary. As a result, it is possible to deal with various pin 30 trajectories with the lock 20 having the same shape.
Further, since the adjacent heart-shaped portions 21 serve as the entrance / exit 25 of the pin 30 to the lock 20, the exit 25b of the lock 20 and the next entrance 25a can be overlapped. Therefore, it is sufficient to return the pin 30 to the inlet 25a of the inlet side passage 23 between the adjacent heart-shaped portion 21 and the cam passage forming portion 22, and to the inlet 25a of the original inlet side cam passage 23 into which the pin 30 has entered. There is no need to return pin 30. For this reason, it is possible to prevent an excessive operation load from being applied as compared with the conventional case.

It is a perspective view of the lock of the lock / unlock device of the embodiment of the present invention. It is a front view of the lock | rock of the locking / unlocking apparatus of this invention Example. (A) is a front view showing the rotation direction of the lock when the pin hits the second surface and the movement path to the entrance of the pin of the lock / unlock device of the embodiment of the present invention, (b) It is a front view which shows the movement path | route to the rotation direction of a lock | rock when a pin contacts a 3rd surface, and the entrance of a pin of the locking / unlocking device of this invention Example. (A) is a front view of the lock / unlock device according to the embodiment of the present invention when the pin passes through the inlet side passage from the inlet, and (b) is a front view when the pin passes from the inlet side passage to the locking portion. (C) is a front view when the pin passes through the outlet side passage from the locking portion, (d) is a front view when the pin passes from the outlet side passage to the outlet, and (e) is a pin when the pin exits. It is a front view when located. It is a front view which shows the case where the lock | rock / unlock apparatus of this invention Example is provided with four heart cam shape parts and the cam channel | path formation parts in the circumferential direction in the lock | rock. It is sectional drawing of the storage apparatus for vehicles provided with the conventional lock / unlock device. It is a front view in case the pin locus is R36 of the conventional lock / unlock device. It is an enlarged partial front view when the pin locus is R36, the case of R18, and the case of a straight line of the conventional lock / unlock device. It is a figure which shows a pin locus | trajectory in the case of the case where the pin locus | trajectory is R36, the case of R18, and a straight line of the conventional lock / unlock device. It is a front view when the lock | rock of the conventional lock / unlock device is made adaptable to the pin locus from R18 to a straight line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Locking / unlocking device 20 Lock 21 Heart-shaped part 22 Cam channel | path formation part 23 Entrance side cam channel | path 24 Exit side cam channel | path 25 Entrance / exit 25a Inlet 25b Exit 30 Pin

Claims (2)

(A) a heart-shaped portion having a locking portion; and a cam passage forming portion that forms an inlet-side cam passage to the locking portion and an outlet-side cam passage from the locking portion between the heart-shaped portion. A lock to prepare,
(B) a pin that can be engaged with and disengaged from the locking portion of the heart-shaped portion of the lock;
Have
The heart-shaped part and the cam passage forming part of the lock are provided on the same plane,
The pin enters the lock, passes through the inlet side cam passage of the cam passage forming portion, engages with the engaging portion of the heart-shaped portion, and passes through the outlet side cam passage of the cam passage forming portion and moves the lock. To come out,
The lock / unlock device, wherein a plurality of the heart-shaped portion and the cam passage forming portion of the lock are provided in a circumferential direction of the lock. An entrance to the lock of the pin is provided between the adjacent heart-shaped portions,
The pin enters the lock from the entrance of the lock, passes through the entrance-side cam passage of the cam passage forming portion, engages with the locking portion of the heart-shaped portion, and exits the cam passage of the cam passage forming portion. The locking and unlocking device of claim 1, wherein the locking and unlocking device is adapted to pass out of the lock from an exit of the lock.

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