JP4777204B2 - Key device - Google Patents

Description

  The present invention relates to a key device.

  As a key device in which a mechanical key is accommodated in a key storage case, the one described in Patent Document 1 is known. In this conventional example, a rotating member for locking an emergency key (mechanical key) inserted into the housing portion is attached to the main body (key housing case) of the key device. The rotating member is urged in the locking direction with the mechanical key by a torsion coil spring, and the mechanical key is automatically locked by the rotating member by the inserting operation and the removal is restricted.

Further, the mechanical key is used by temporarily rotating the rotating member against the biasing force of the coil spring to release the locking, and then pulling it out from the main body.
JP 2005-213932 A

  However, in the above-described conventional example, the rotating member that prevents the mechanical key from being removed from the key storage case is held in the locking position only by the biasing force of the torsion coil spring. There is a problem that dropout is likely to occur.

  That is, for example, when an impact force is applied to the key device by dropping the key device to the floor, the inertial force generated on the rotating member or the impact force coincides with the unlocking direction with the mechanical key. The rotating member rotates in the unlocking direction with respect to the mechanical key, and the mechanical key is detached from the key storage case.

  The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide a key device in which a mechanical key is not accidentally dropped from a key storage case. Another object of the present invention is to provide a mechanical key that does not easily fall off the key storage case.

  The key device is formed by accommodating a mechanical key 2 in a key storage case 1 so as to be removable. Either one of the key storage case 1 and the mechanical key 2 can be engaged and disengaged with a locking piece 3 that is engaged with or disengaged from a locked portion 4 formed on the other and holds both connected states in the locked state. Placed in. When the locking piece 3 is in the locked state, the movement in the locking release direction is restricted by setting the lock portion 5 in the locked state.

  In the present invention in which the locking piece 3 is restrained by the lock portion 5 that is unlocked by an operation in an operation direction different from the locking release operation direction of the locking piece 3, when an impact force is applied to the key device Even so, since the force in the releasing direction is not generated at the same time on both the locking piece 3 and the lock portion 5, the connection between the mechanical key 2 and the key storage case 1 is inadvertently released. There is no.

Although the operation part to the lock part 5 can be provided separately from the operation part to the locking piece,
The lock portion 5 is held by the locking piece 3 and includes a lock rod 6 that moves between a lock position and an unlock position along the longitudinal direction with one end as an operation portion,
The locking rod 6 and the locking piece 3 are connected in the locking / unlocking operation direction of the locking piece 3 so that the locking piece 3 is engaged / disengaged by operating the operating portion of the locking rod 6. When configured, the structure can be simplified and the operability can be improved.

  According to the present invention, since the mechanical key and the key storage case are not carelessly separated, usability is improved.

  FIG. 1 shows an embodiment of the present invention configured as a vehicle key device. In this embodiment, the key device is formed by housing the mechanical key 2 in the key storage portion 18 formed in the key storage case 1. The key storage case 1 accommodates a circuit board 1a on which communication means for authentication means provided on the vehicle side is mounted.

  The key storage portion 18 includes a head storage portion 18a that is opened on the upper surface of the key storage case 1, and a blade storage portion 18b that extends downward is formed on the bottom wall of the head storage portion 18a. The blade accommodating portion 18b is formed in the vicinity of the side surface of the key accommodating case 1 so as not to narrow the mounting space of the circuit board 1a in the key accommodating case 1, and is opposite to the blade accommodating portion 18b forming end of the head accommodating portion 18a. The stepped portion 4 is formed.

  The mechanical key 2 is provided in case a trouble occurs in electronic authentication between the circuit board 1a of the key storage case 1 and the vehicle side authentication means, and the key head portion 17 is fixed to the upper end of the blade portion 16. Formed. The blade portion 16 is formed with an unlocking cord for mechanically moving a tumbler of a cylinder lock provided on the vehicle side to enable an operation on the cylinder lock.

  As shown in FIG. 2, the key head portion 17 extends laterally from the upper end portion of the blade portion 16, and the locking piece 3 is inserted using the key head portion 17 as a housing. In order to insert the locking piece 3, the key head portion 17 is provided with a piece receiving hole 19 opened to the distal end surface of the extension sideways, and the locking piece 3 is formed on one end surface. The piece in a posture in which the stop protrusion 3a is directed forward (hereinafter, the side where the piece receiving hole 19 is opened is referred to as “front”, and the depth wall side of the piece receiving hole 19 is referred to as “rearward” in the present specification). It is movably inserted into the receiving hole 19. The lower end surface of the locking projection 3a gradually increases in height toward the front so that a horizontal component force is generated rearward when it comes into contact with the opening edge of the blade accommodating portion 18b from above. It is formed by an inclined surface.

  Further, the locking piece 3 is provided with a lock rod insertion hole 3b having a rectangular cross section penetrating vertically, and the lock rod 6 is inserted so as to be movable up and down. The lock rod 6 is a frame having a rectangular cross-sectional shape, and is drawn out of the key head from a rectangular hole 19 a formed in the ceiling wall of the piece receiving hole 19 of the key head portion 17. The rectangular hole 19a has a long rectangular shape so that the lock rod 6 can move back and forth, and the locking piece 3 is in a state where the lock rod 6 is in contact with the front end edge of the rectangular hole 19a. As shown in FIG. 2 (b), the locking projection 3 a is located at the locking position where it protrudes from the front end surface of the key head portion 17.

  Further, the locking piece 3 is provided with a lateral hole 3c opened at the rear end, and the rotating cam 10 is inserted therein. The rotary cam 10 has a single-letter-shaped protrusion 9 on the front end surface of the disk portion 10a, and is rotatably held by the outer periphery of the disk portion 10a guided by the inner wall of the horizontal hole 3c and movable in the front-rear direction. The rotary cam 10 is urged forward by a compression spring 10 b, and the tip of the protrusion 9 comes into pressure contact with the side wall surface of the lock rod 6.

  On the other hand, the key head portion 17 is formed with a lock recess 20 into which the lock rod 6 at the locking position can be fitted. A compression spring 7 having a cap member 21 at the tip is disposed in the lock recess 20 and urges the lock rod 6 upward. As shown in FIGS. 2 and 3, a cap retainer 6 a having a substantially triangular cross section that presses the rear half of the circumferential wall of the cap member 21 protrudes from the lower end portion of the lock rod 6. Is formed with a cap passage recess 3 d for allowing relative movement with the cap member 21.

  Therefore, in this embodiment, as shown in FIG. 2B, the position of the lock rod 6 where the lower end surface, that is, the lower end surface of the cap retainer 6a coincides with the bottom wall surface of the piece receiving hole 19, corresponds to the unlocking position. . In this unlocked position, when the lock rod 6 is moved backward using the protruding portion from the rectangular hole 19a as an operation portion, the cap member 21 whose lower end portion is fitted in the lock recess 20 is left, and the lock rod 6 is locked. The piece 3 moves rearward, and the locking projection 3a moves to the locking release position where the locking projection 3a enters the piece receiving hole 19 as shown in FIGS. 3 (a) and 3 (b). At the unlocking position, the locking between the locking projection 3a and the locked portion 4 of the key storage case 1 is released, and the mechanical key 2 can be taken out.

  On the other hand, as shown in FIG. 3 (c), at the lock position where the lock rod 6 is pushed from the unlocked position, the lower end portion of the lock rod 6 is fitted in the lock recess 20, so that Movement operation to the release position is restricted.

  A lock portion 5 is provided to hold the lock rod 6 in the lock position and the unlock position. The lock portion 5 uses a double knock mechanism that transitions between a lock position and an unlock position every time the lock rod 6 is pushed down, and the cam surface formed on the side wall of the rotary cam 10 and the lock rod 6. 8.

  As shown in FIG. 4, the cam surface 8 is recessed on the side wall of the lock rod 6, and is locked between the posture correcting interference portion 12 disposed at the lowermost portion and the operation protrusion 11 disposed at the uppermost portion. The position locking protrusion 14 is disposed and formed. As shown in FIGS. 4 (a) and 4 (b), the posture correcting interference section 12 is formed in a horizontal shelf shape, and extends forward to serve as an unlocking position locking step section 22. The unlocking position locking step 22 is arranged in the locking recess 20 by the protrusion 9 of the rotating cam 10 that is biased toward the cam surface 8 when the lock rod 6 is in the unlocking position. The lock rod 6 is held in the unlocked position against the reaction force of the spring 7.

  The lock position locking projection 14 is formed above the lock release position locking step 22 and rotates as shown in FIGS. 4C and 4D when the lock rod 6 is pushed in slightly from the unlock position. The protrusion 9 of the cam 10 falls into a groove 13 formed between the operating protrusion 11 and engages with the lock position engagement protrusion 14 to hold the lock rod 6 in the lock position. On the lower surface of the lock position locking projection 14, an inclined surface is formed for moving the rotary cam 10 in the locking release direction, that is, rearward when the lock rod 6 is pushed from the lock release position.

  The operating protrusion 11 interferes with the protrusion 9 of the rotating cam 10 when the lock rod 6 is further pushed in from the locked position, and rotates the rotating cam 10. In order to move the rotary cam 10 rearward by the pushing operation of the lock rod 6, the upper end portion of the groove portion 13 disposed between the operating protrusion 11 and the lock position locking protrusion 14 is an inclined surface for unlocking. 15 is formed. As the rotating cam 10 rotates, the ridge 9 changes from a horizontal posture to an oblique posture. Thereafter, when the operating force applied to the lock rod 6 is released, the ridge 9 maintains the oblique posture and slides on the lock rod 6.

  The width of the groove 13 is larger than the thickness dimension of the protrusion 9 and is smaller than the upper and lower end dimensions when the protrusion 9 is in an oblique posture. Since the locking rod 6 is moved forward by the locking release inclined surface 15, the protruding rod 9 moves over the locking position locking protrusion 14 when the locking rod 6 is moved upward. Thus, the locking position locking projection 14 is not locked.

  As a result, the lock rod 6 is moved by the restoring force of the spring 7 until the protrusion 9 comes into contact with the posture correcting interference portion 12, and the oblique posture 9 is brought into a horizontal posture by the horizontal posture correcting interference portion 12. Return. The ridge 9 in the horizontal posture enters the unlocking position locking step 22 by the forward biasing force, and is thereafter held at the unlocking position.

  In addition, although the case where the lock part 5 was comprised in the mechanical key 2 was shown above, as shown in FIG. 5, it can arrange | position to the key storage case 1 side. In this case, the key storage case 1 is used as a housing for the lock portion 5.

It is a figure which shows a key apparatus, (a) is a figure which shows the state which accommodated the mechanical key, (b) is a figure which shows the state which removed the mechanical key. It is a figure which shows a mechanical key, (a) is an exploded perspective view, (b) is a sectional view, (c) is a sectional view taken along line 2C-2C in (b), (d) is a sectional view taken along line 2D-2D in (c). FIG. It is a figure which shows operation | movement of a lock | rock part, (a) is a figure which shows the state which cancelled | released the lock | rock and cancel | released the locking piece, (b) respond | corresponds to FIG.2 (c) in the state of (a). FIG. 4C is a diagram showing a locked state. It is a figure which shows the operation | movement of a cam surface, (a) is a figure which shows the lock rod in a lock release position, (b) is the 4B-4B sectional view of (a), (c) is the lock rod in a lock position. (D) is a view corresponding to (b) in the state of (c), (e) is a sectional view showing a state where the lock rod is pushed in, and (f) is a cam surface and rotation in the state of (e). Explanatory drawing which shows the relationship of a cam, (g) is sectional drawing which shows the state which canceled the operation force from (e), (h) is a figure corresponding to (f) in the state of (g). It is a figure which shows other embodiment of this invention, (a) is a figure which shows the state which accommodated the mechanical key, (b) is a figure which shows the state which removed the mechanical key.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key storage case 2 Mechanical key 3 Locking piece 4 Locked part 5 Locking part 6 Locking part 7 Spring 8 Cam surface 9 Projection 10 Rotating cam 11 Actuation projecting part 12 Posture correcting interference part 13 Groove part 14 Lock position mechanism Stop protrusion 15 Inclined surface for unlocking 16 Blade part 17 Key head part

Claims (5)

A key device for detachably storing a mechanical key in a key storage case by engaging and disengaging a locking piece arranged on one of the key storage case and the mechanical key with a locked portion formed on the other. ,
Transition between the locked state and the unlocked state by an operation to the operation unit, and restricting the movement of the locking piece in the locking release direction in the locked state,
The key apparatus provided with the lock part which includes the direction different from the latch release direction to the to-be-latched part of the locking piece in the operation direction of the operation part to a lock release state. The lock portion includes a lock rod that is held by the locking piece and moves between the lock position and the unlock position along the longitudinal direction with one end as an operation portion,
2. The key device according to claim 1, wherein the lock rod and the locking piece are coupled in the locking / unlocking operation direction of the locking piece, and the locking piece is engaged / disengaged by operating the operation portion of the lock rod. . The lock rod is movable between a lock release position where the operating portion is pushed out from a housing biased by a spring and holding the locking piece, and a lock position pushed from the lock release position,
The key device according to claim 2, wherein the lock rod is held at the lock position by a double knock mechanism that repeats the locking operation and the locking release operation for each pushing operation. The double knock mechanism is
A cam surface formed on the side wall of the lock rod;
A rotating cam that is urged toward the cam surface and is rotatable, and has a protrusion projecting on the cam surface side;
On the cam surface,
An operating projection that drives the rotary cam to rotate at a predetermined angle so that when the lock rod is pushed down to the vicinity of the push-down stroke end position, it interferes with the projection of the rotary cam and the projection has an oblique posture;
A posture correcting protrusion that rotates the rotating cam so that the protrusion takes a horizontal posture by interfering with the protrusion when the lock rod is lifted from the end position of the push-down stroke;
A lock that can be passed between the operating protrusion and the operating protrusion when the protrusion is in an oblique position, and is arranged with a groove that falls in the horizontal position, and holds the lock rod in the lock position by locking the protrusion that has dropped into the groove. A position locking protrusion,
An unlocking inclined surface that translates the rotating cam in the unlocking direction in accordance with the push-down operation of the lock rod from the lock position;
4. The key device according to claim 3, wherein the key device is formed. A mechanical key that is detachably stored in a key storage case that has built-in communication means for electronic authentication with a locking part,
A locking piece that is movably held by a key head portion fixed to one end of the blade portion, and that is engaged with and disengaged from a locked portion formed in the key storage case;
A transition between the locked state and the unlocked state is made by an operation on the operation unit, and in the locked state, the movement of the locking piece in the locking release direction is restricted, and the locking piece is moved to the locked portion. A lock part including a direction different from the unlocking direction of
With mechanical key.

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