JP2006177092A - Connection key - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection key for easily performing rotary operation once for locking and unlocking two cylinder locks. <P>SOLUTION: This connecting key 10 has a pair of key pieces 11A and 11B inserted into a key hole of the adjacent cylinder locks. Support shafts 15A and 15B rotatably supported by a key body 12 are fixed to respective base end parts 11a of the key pieces 11A and 11B. A handle 14 of the key body 12 is provided with driving force transmitting means (a handle shaft 16, a driving gear 17, and a driven gear 18) for transmitting driving force of the handle 14 to the support shafts 15A and 15B and respectively rotating the key pieces 11A and 11B around the shafts. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connection key, and is applied as, for example, a dedicated key for a double lock type cylinder lock.

  In recent years, as a countermeasure against picking of an entrance door or the like, a double lock type door in which two cylinder locks are attached to one door is increasing. For example, two cylinder locks are attached in the vicinity of the handle of the entrance door with a vertical interval. In many cases, each cylinder lock is independently provided on the door, and when locking or unlocking, an operation of inserting a key into a keyhole and turning it is performed for each cylinder.

Utility Model Registration No. 3100975

  However, when a key is used for each of the two cylinder locks as described above, it takes twice as much time to lock and unlock the cylinder lock, and the operation becomes troublesome. For this reason, in an entrance door that opens and closes frequently, only one cylinder lock may be used and the other cylinder lock may not be used, and picking measures may be insufficient.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a connection key that can easily perform a rotation operation for locking and unlocking two cylinder locks at a time. .

[First invention]
The concatenated key of the present invention (first invention) for solving the above problems is
A pair of key pieces inserted into the keyholes of adjacent cylinder locks;
A pair of support shafts provided at base ends of the pair of key pieces;
A key body that rotatably supports the pair of support shafts;
A handle attached to the key body;
Driving force transmission means for transmitting the driving force of the handle to the pair of support shafts when the handle is operated and rotating the pair of key pieces around the respective axes is provided.

According to the present invention (first invention), when a handle is operated by inserting a pair of key pieces into the key holes of adjacent cylinder locks, the driving force is transmitted to the support shaft of the key piece by the driving force transmitting means, The pieces rotate simultaneously by a predetermined rotation angle. Thereby, each key piece can be simultaneously rotated by one handle operation, and the locking and unlocking operation of the cylinder lock can be performed very easily.
In addition, since each key piece is integrally attached to the key body, it is less likely that the keys are lost or mistaken as compared with the case where a plurality of keys are handled separately, and the management of the keys is facilitated.

  As a prior art related to a concatenated key, Patent Document 1 discloses a concatenated key having a configuration in which two key pieces are attached to a key body. However, this connection key is applied to a special cylinder lock for crime prevention such as an automobile, and is common to the present invention in that two keys are simultaneously inserted into the keyhole. This is different from the present invention in that a rotating mechanism is not incorporated in the key body.

[Second invention]
The concatenated key of the present invention (second invention) comprises the structure of the first invention,
The driving force transmission means is
A handle shaft that rotates integrally with the handle;
A drive gear provided on the handle shaft;
A pair of driven gears provided on the pair of support shafts and meshing with the drive gear are provided.

  According to the present invention (second invention), when the handle is rotated, the rotational force is directly transmitted from the drive gear to the pair of support shafts via the pair of driven gears. Thereby, the key piece of each spindle can be simultaneously rotated by the handle operation.

In the configuration of the second aspect of the present invention, it is desirable that the driving force transmitting means has an equal gear ratio between the driving gear and the driven gear.
According to such a configuration, since the rotation angles of the handle and each key piece are equal, the rotation position of the key piece can be easily predicted from the tilt of the handle, and the handle operation during locking and unlocking can be easily performed.

In the configuration of the second invention, the driving force transmitting means may be provided with a return spring on the handle shaft that keeps the rotational position of the handle at a fixed position with respect to the key body.
According to such a configuration, since the handle is maintained at a predetermined rotational position by the urging force of the return spring, the direction of the key piece can be stably held in accordance with the key hole, and the key piece can be held in the key hole. Can be easily inserted.
Even if the handle is turned during the locking or unlocking operation, the handle is automatically returned to the original position by the urging force of the return spring, so that the burden of removing the key piece from the key hole is reduced.

[Third invention]
The concatenated key of the present invention (third invention) comprises the configuration of the first invention,
The driving force transmission means is
A handle shaft extending on one of the pair of support shafts and rotating integrally with the handle;
A drive gear provided on the one spindle;
A driven gear provided on the other spindle of the pair of spindles;
An annular belt that is wound around the drive gear and the driven gear and transmits a rotational force from the drive gear to the driven gear is provided.

According to the present invention (third invention), when the handle is rotated, the rotational force is directly transmitted to one of the support shafts via the handle shaft, and at the same time, this rotational force is transmitted from the one support shaft via the annular belt. It is transmitted to the other spindle. Thereby, the key piece of each spindle can be simultaneously rotated by the handle operation.
In addition, according to the present invention (third invention), the rotating shafts of the pair of key pieces and the handle are in the same direction in order to rotate the respective support shafts in the same direction by meshing the driving gear and the driven gear with the annular belt. Handle operability is improved.

In the configuration of the third aspect of the invention, it is desirable that the driving force transmission means has an equal gear ratio between the driving gear and the driven gear.
According to such a configuration, since the handle and each key piece rotate in the same direction and at the same rotation angle, the rotation position of each key piece can be intuitively known from the tilt of the handle, and locking and unlocking can be performed. The handle operation becomes even easier.

In the configuration of the third aspect of the invention, the driving force transmitting means may be provided with a return spring on the handle shaft that keeps the rotational position of the handle at a fixed position with respect to the key body.
According to such a configuration, since the handle is maintained at a predetermined rotational position by the urging force of the return spring, the direction of the key piece can be stably held in accordance with the key hole, and the key piece can be held in the key hole. Can be easily inserted.
Even if the handle is turned during the locking or unlocking operation, the handle is automatically returned to the original position by the urging force of the return spring, so that the burden of removing the key piece from the key hole is reduced.

[Fourth Invention]
The concatenated key of the present invention (fourth invention) comprises the configuration of the first invention,
The driving force transmission means is
The handle provided on the key body so as to be reciprocally movable;
A rack gear provided along the moving direction of the handle;
A pair of pinion gears provided on the pair of support shafts and meshing with the rack gear are provided.

  According to the present invention (fourth invention), when the handle is reciprocated by the key body, the rack gear meshes with the pair of pinion gears to give a rotational force to the support shaft. Thereby, the key piece of each spindle can be simultaneously rotated by the reciprocating motion of the handle.

In the configuration of the fourth aspect of the invention, the driving force transmitting means may be provided with a return spring that keeps the moving position of the handle at a fixed position with respect to the key body in the cavity of the handle.
According to such a configuration, since the handle is held at a predetermined movement position by the urging force of the return spring, the direction of the key piece can be stably held in accordance with the key hole, and the key piece can be held in the key hole. Can be easily inserted.
Even if the handle is moved during the locking or unlocking operation, the handle is automatically returned to the original position by the urging force of the return spring, so that the burden of removing the key piece from the key hole is reduced.

The connection key of the present invention is preferably applied to, for example, a door lock or a cylinder lock of a gate. In addition, it can also be applied to cylinder locks for shutters, safes, furniture, home appliances, vending machines, and the like.
The present invention (first to fourth inventions) may be applied alone, or may be applied in combination of these inventions as necessary. Moreover, you may combine the other invention described in this specification with this invention (1st-4th invention).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The connection key of the first embodiment is shown in FIGS.
As shown in FIG. 2, the connection key 10 includes key pieces 11 </ b> A and 11 </ b> B, a key body 12, and a handle 14. Two key pieces 11 </ b> A and 11 </ b> B are juxtaposed in front of the key body 12, and a handle 14 is rotatably attached to the rear side of the key body 12. By rotating the handle 14, the key pieces 11A and 11B are rotated about the axis (see FIG. 3).

  As shown in FIG. 1, support shafts 15A and 15B are fixed to the base end portions 11a of the key pieces 11A and 11B. One end of each of the support shafts 15A and 15B fits in the bearing holes 12a and 12a of the key body 12, and the other end fits in the bearing holes 13a and 13a of the body lid 13. Accordingly, the support shafts 15A and 15B are rotatably supported in the key body 12.

  A handle shaft 16 is fixed at a substantially intermediate position of the handle 14. One end of the handle shaft 16 is fitted into the stop hole 14a, and the other end is passed between the support shafts 15A and 15B through the shaft hole 13b of the body lid 13. The handle shaft 16 is rotated in the key body 12 as the handle 14 rotates.

A drive gear 17 is provided on the handle shaft 16, and the driven gears 18 of the support shafts 15 </ b> A and 15 </ b> B are engaged with the drive gear 17. Thereby, the rotational force of the handle 14 is transmitted to the support shafts 15A and 15B via the drive gear 27 and the driven gears 18 and 18.
Since the driven gears 18 and 18 mesh in opposite directions on both sides of the drive gear 17, the rotation directions of the handle 14 and the support shafts 15A and 15B are opposite to each other.

  The gear ratios of the drive gear 17 and the driven gears 18 and 18 are equal, and the number of teeth of each gear is the same. Therefore, the handle 14 and the key pieces 11A and 11B have the same rotation angle. Further, since there is almost no play gap between the drive gear 17 and the driven gears 18 and 18, the responsiveness of the handle operation and the operational feeling are improved.

A return spring 19 is inserted into the outer periphery of the handle shaft 16. One end of the return spring 19 is fixed to the body lid 13, and the other end is fixed to the handle 14. When the handle 14 is rotated, an urging force opposite to the rotation direction is applied from the return spring 19 to the handle 14. As a result, the handle 14 is returned to the original position by the urging force of the return spring 19. That is, the rotational position of the handle 14 with respect to the key body 12 is maintained at a fixed position.
In a state where no load is applied to the return spring 19, the key pieces 11 </ b> A and 11 </ b> B are arranged on the same plane, and the positional relationship is maintained such that the side surface of the handle 14 is continuous with the side surface of the key body 12.

Next, a method for using the concatenated key 10 will be described with reference to FIGS.
As shown in FIG. 4, the double lock type cylinder locks 1A and 1B are mounted adjacent to each other in the vicinity of the handle of the door, and the key holes of the cylinder locks 1A and 1B are directed to the outside of the door.
Each cylinder lock 1 </ b> A, 1 </ b> B includes an outer cylinder 2 and an inner cylinder 3, and a latch 4 is provided at the cylinder end of the inner cylinder 3. Pin holes H are juxtaposed in the cylindrical walls of the outer cylinder 2 and the inner cylinder 3, and the tumbler pins 5, the driver pins 6 and the compression springs 7 are accommodated in these pin holes H.
In a state where the key K is not inserted into the key hole of the inner cylinder 3, the compression spring 7 biases the driver pin 6 toward the inner cylinder 3, and locks the rotation of the inner cylinder 3 at the pin tip of the driver pin 6. When the key K is inserted into the key hole of the inner cylinder 3, the tumbler pin 5 pushes the driver pin 6 toward the compression spring 7 in accordance with the key groove, and the boundary between the tumbler pin 5 and the driver pin 6 is between the outer cylinder 2 and the inner cylinder 3. The inner cylinder 3 is unlocked in accordance with the boundary. When the key K is turned in this state, the inner cylinder 3 is rotated with respect to the outer cylinder 2, and the latch 4 is switched to the locked position or the unlocked position.

  When locking or unlocking the cylinder locks 1A and 1B, as shown in FIG. 4, first, the key pieces 11A and 11B are simultaneously inserted into the upper and lower key holes. As a result, the tumbler pins 5 are simultaneously pressed toward the compression spring 7 side, and the locks of the inner cylinders 3 and 3 are released.

  Next, when the handle 14 is rotated in the locking or unlocking direction, the key pieces 11A and 11B rotate with the inner cylinders 3 and 3, and the two latches 4 and 4 are simultaneously moved from the standby position to the locking or unlocking position. Switch. For example, when the key pieces 11A and 11B are rotated in the locking direction indicated by the arrow b in FIG. 5, the latches 4 and 4 are rotated 90 ° clockwise (see FIG. 5B), and the door clasp is moved to the locking position. Let On the other hand, when the key pieces 11A and 11B are rotated in the unlocking direction indicated by the arrow c in FIG. 5, the latches 4 and 4 are rotated 90 ° counterclockwise (see FIG. 5C), and the door clasp is unlocked. Move to the lock position.

Thus, according to the connecting key 10, the two cylinder locks 1A and 1B can be easily locked and unlocked by a single operation of the handle 14. For this reason, the operation of the key when both the cylinder locks 1A and 1B are used is not troublesome, and it can be avoided that one of the keys is forgotten to be closed and the countermeasure for picking is left behind.
Further, since the two key pieces 11A and 11B are integrated with the key body 12, the key pieces 11A and 11B are less likely to be lost or mistaken, and the key can be easily managed.
Furthermore, in the connection key 10, since the rotational position of the handle 14 is held at a fixed position by the return spring 19, it does not take time to return the handle 14 to its original position after operating the handle 14.

[Second Embodiment]
The concatenated key according to the second embodiment is shown in FIGS.
The connection key of the second embodiment uses an annular belt as a driving force transmission means for the handle.
As shown in FIG. 7, the connecting key 20 includes key pieces 21 </ b> A and 21 </ b> B, a key body 22, and a handle 24. Two key pieces 21 </ b> A and 21 </ b> B are juxtaposed in front of the key body 12, and a handle 24 is rotatably attached to the rear side of the key body 22. By rotating the handle 24, the key pieces 21A and 21B are rotated around the axis (see FIG. 8).

  As shown in FIG. 6, support shafts 25 </ b> A and 25 </ b> B are accommodated in the key body 22. The base end portions 21a of the key pieces 21A and 21B are fixed to the retaining grooves 25a and 25a of the support shafts 25A and 25B.

The support shaft 25A is provided with a driven gear 28 and an auxiliary board 28a. One end of the support shaft 25A is rotatably supported by the shaft hole 22a of the key body 22, and the other end (auxiliary board 28a) of the support shaft 25A is rotatably supported by the shaft hole 23a of the body lid 23.
The support shaft 25B is provided with a handle shaft 26 and a drive gear 27 in the axial direction thereof. One end of the support shaft 25B is rotatably supported by the shaft hole 22a of the key body 22, and the other end (handle shaft 26) is rotatably supported by the bearing 24a of the handle 24 through the shaft hole 23a of the body lid 23.

  The driving gear 27 and the driven gear 28 are arranged at an interval in the vertical direction, and an annular belt 29 is wound around these gears. The rotational force of the drive gear 27 is transmitted to the driven gear 28 via the annular belt 29. The gear ratio of the drive gear 27 and the driven gear 28 is the same, and the number of teeth of each gear is set to be the same.

When the connecting key 20 is used in the cylinder locks 1A and 1B shown in FIG. 4, the key pieces 21A and 21B are simultaneously inserted into the upper and lower keyholes, and the handle 24 is rotated in the locking direction or the unlocking direction.
Then, the key pieces 21A and 21B are simultaneously rotated together with the inner cylinders 3 and 3, and the latches 4 and 4 are switched to the locked position or the unlocked position.

As described above, even with the connecting key 20 of the second embodiment, the inner cylinders 3 and 3 of the cylinder locks 1A and 1B can be simultaneously rotated by a single operation of the handle 24 to easily perform the locking and unlocking operations. it can.
Further, according to the connecting key 20, since the handle 24 and the key pieces 21A, 21B rotate at the same rotation angle in the same direction, the rotation angle of the key pieces 21A, 21B can be intuitively known by the inclination of the handle 24. , Handle operation can be performed more comfortably.
In the second embodiment, the handle shaft 26 may be provided with a return spring that holds the rotational position of the handle 24 at a fixed position. According to such a configuration, it is possible to omit the trouble of returning the rotational position of the handle 24 as in the first embodiment.

[Third Embodiment]
The concatenated key according to the third embodiment is shown in FIGS. The cylinder lock of the third embodiment uses a rack and pinion mechanism as a driving force transmission means of the handle.
As shown in FIGS. 10 and 11, the connection key 30 includes key pieces 31 </ b> A and 31 </ b> B, a key body 32, and a handle 34. Two key pieces 31A and 31B are juxtaposed in front of the key body 32, and a handle 24 passes through the rear end of the key body 22 substantially perpendicularly to the side of the body. By sliding the handle 24 in its length direction, the key pieces 31A and 31B are rotated around the axis (see FIG. 12).

As shown in FIG. 9, support shafts 35 </ b> A and 35 </ b> B are accommodated in the key body 32. The base end portions 31a of the key pieces 31A and 31B are fixed to the retaining grooves 35a and 35a of the support shafts 35A and 35B.
The support shafts 35A and 35B are provided with pinion gears 37 and 37 and a stop plate 37a in the axial direction thereof. One end of each of the support shafts 35A and 35B is rotatably supported by the shaft hole 32a of the key body 32, and the other end (stop plates 37a and 37a) is rotatably supported by the shaft hole 33a of the body lid 33.

  Rack gears 36 are provided on the upper and lower side surfaces of the handle 34 in FIG. The rack gears 36 and 36 mesh with the upper and lower pinion gears 37 and 37 in FIG. When the handle 34 is slid between the pinion gears 37, 37, the pinion gears 37, 37 rotate in opposite directions.

Return springs 39, 39 are accommodated in the upper and lower halves S, S in the longitudinal direction of the handle 34. One end of these return springs 39, 39 is fixed to the projections 39 a, 39 a in the hollow portions S, S, and the other end hits the inner side surface of the locking piece 39 b of the key body 32.
When the central portion of the handle 34 is accommodated in the key body 32, that is, when the handle 34 is in the initial position, the return springs 39 are in an extended state, and no urging force is applied to the handle 34. When the handle 34 is displaced in the left or right direction with respect to the key body 32 from the initial position, either one of the return springs 39 and 39 is compressed and pushed back so as to return the handle 34 to the original position. As a result, the handle 34 is stably held at the initial position.

For example, as shown in FIG. 13, the connecting key 30 of the third embodiment is used for a door of a type in which the inner cylinders 3 of the cylinder locks 1A and 1B rotate in opposite directions.
When the key pieces 31A and 31B of the connecting key 30 are simultaneously inserted into the upper and lower keyholes of the cylinder locks 1A and 1B, the tumbler pins 5 are pushed up and down along the key grooves, and the inner cylinders 3 and 3 are unlocked. In this state, when the handle 34 is slid in a predetermined direction, the key pieces 31A and 31B rotate in opposite directions together with the inner cylinders 3 and 3, respectively, and the latches 4 and 4 are switched to the locked position or the unlocked position.

As described above, according to the connection key 30, the two cylinder locks 1A and 1B can be easily locked and unlocked by a single slide operation of the handle 34.
Further, since the handle 34 is held at a fixed position by the return spring 39, the connecting key 30 does not require time and effort to return to the original state after the handle 34 is operated.

As mentioned above, although the connection key of 1st-3rd embodiment was demonstrated, embodiment of this invention is not restricted to these, You may accompany various deformation | transformation.
In the first embodiment, a coil spring is used as the return spring, but a leaf spring may be used instead.
In the third embodiment, the handle 34 is passed between the support shafts 35A and 35B. However, the handle may be moved in the direction in which the support shafts 35A and 35B are arranged (vertical direction in FIG. 10). According to such a configuration, each pinion gear can be rotated in the same direction with a single rack gear.
In the first to third embodiments, two key pieces are provided in the key body, but three or more key pieces may be provided according to the number of key holes.

It is a disassembled perspective view which shows the connection key by 1st Embodiment of this invention. It is a perspective view of the connection key. It is a perspective view which shows the use condition of the connection key. It is a side view which shows the use condition of the connection key. The method of using the cylinder lock will be described. (A) is an operation explanatory diagram showing the standby position of the latch, (B) is an operation explanatory diagram showing the lock position of the latch, and (C) is an unlocking position of the latch. FIG. It is a disassembled perspective view which shows the connection key by 2nd Embodiment of this invention. It is a perspective view of the connection key. It is a perspective view which shows the use condition of the connection key. It is a disassembled perspective view which shows the connection key by 3rd Embodiment of this invention. It is a front side perspective view of the connection key. It is a back side perspective view of the connection key. It is a perspective view which shows the use condition of the connection key. It is a side view which shows the use condition of the connection key.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Connection key 11A, 11B Key piece 12 Key body 13 Body lid 14 Handle 15A, 15B Support shaft 16 Handle shaft (driving force transmission means)
17 Drive gear (drive force transmission means)
18 Driven gear (drive force transmission means)
19 return spring 20 connecting key 21A, 21B key piece 22 key body 23 body lid 24 handle 25A, 25B support shaft 26 handle shaft (driving force transmitting means)
27 Drive gear (drive force transmission means)
28 Driven gear (drive force transmission means)
29 annular belt (drive force transmission means)
30 connecting keys 31A, 31B key piece 32 key body 33 body lid 34 handle 35A, 35B support shaft 36 rack gear (driving force transmission means)
37 Pinion gear (drive force transmission means)
39 Return spring

Claims (7)

A pair of key pieces inserted into the keyholes of adjacent cylinder locks;
A pair of support shafts provided at base ends of the pair of key pieces;
A key body that rotatably supports the pair of support shafts;
A handle attached to the key body;
A connecting key comprising: a driving force transmitting means for transmitting a driving force of the handle to the pair of support shafts when the handle is operated, and rotating the pair of key pieces around the respective axes. The driving force transmission means is
A handle shaft that rotates integrally with the handle;
A drive gear provided on the handle shaft;
The connection key according to claim 1, further comprising: a pair of driven gears provided on the pair of support shafts and meshing with the drive gear. The driving force transmission means is
A handle shaft extending on one of the pair of support shafts and rotating integrally with the handle;
A drive gear provided on the one spindle;
A driven gear provided on the other spindle of the pair of spindles;
The connecting key according to claim 1, further comprising: an annular belt wound around the drive gear and the driven gear and transmitting a rotational force from the drive gear to the driven gear. The driving force transmission means is
The handle provided on the key body so as to be reciprocally movable;
A rack gear provided along the moving direction of the handle;
The connection key according to claim 1, further comprising: a pair of pinion gears provided on the pair of support shafts and meshing with the rack gear.   The connection key according to claim 2 or 3, wherein a gear ratio between the drive gear and the driven gear is equal.   The connection key according to claim 2 or 3, wherein a return spring is provided on the handle shaft so as to keep a rotational position of the handle at a fixed position with respect to the key body. The connection key according to claim 4, wherein a return spring is provided in a hollow portion of the handle to maintain a moving position of the handle at a fixed position with respect to the key body.

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