JPH0215715B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention includes two dead bolts in the same lock case, and each dead bolt can be locked and unlocked separately from the outside using two corresponding cylinder locks, and from the inside the door. This relates to a double-lock door lock in which both dead bolts can be locked and unlocked in common with a single thumb turn.

Conventionally, a double lock refers to a door with two independent locks attached to it so that it takes longer to break the lock, and this double lock method is recommended because of its excellent crime prevention effect. However, installing two independent locks on one door costs about twice as much as installing a single lock, including the complexity of the installation work, and it also looks better than the two locks. The locks are installed separately, which not only looks bad, but also requires two operations to lock and unlock, whether inside or outside the door, and it is especially easy to forget to operate the two thumb turns inside the door. , I ended up letting one of the two locks play, and I won.
There was a drawback that the results of installing two locks were not sufficient.

However, in order to eliminate and solve the above-mentioned drawbacks, the present invention provides two dead bolts in the same lock case, and separately operates the two dead bolts with two cylinder locks attached to the outside of the door. The present invention provides a door lock that can be locked and that allows both dead bolts to be locked and unlocked in common with one thumb turn on the inside of the door.

That is, 1 is a lock case constituting the door lock of the present invention, and two dead bolts 2 and 3 are attached to the case side plate 1.
The hubs 4 and 5 attached to the hubs ₁ and 5 are fitted so that they can be moved in and out by rotation. 6 is hub 4
The tip of the cam ₄₁ integrated with the cam 41 has a horizontal notch ₆₁ into which a fixed pin ₄₂ is loosely fitted, and as the hub 4 rotates, it is guided into the groove ₁₃ formed in the case rear plate ₁₂ . The sliding plate 7, which moves up and down, has a U-shaped cross section, and on the side end side of one side there are lock teeth ₇₁ ... ₇₁ that mesh with a pinion ₈ pivotally supported on the case side plate 11. Upper and lower portions 7 ₂ , 7 are formed on opposite sides, and a pin 5 ₂ fixed to the tip of a cam 5 ₁ integrated with the hub 5 engages with the tip of the cam 5 1 .
₃ and a bent piece 6 ₂ formed at the bottom of the sliding plate 6
It is a sliding body formed with upper and lower parts 7 ₄ and 7 ₅ on the rear plate side that are engaged with each other. It is fitted. 11 and 12 are cylinder locks attached to a decorative plate 13 to be attached to the outside of the door, and operation plates 11 ₁ and 12 ₁ are integrated with the plug.
The tips of the hubs are fitted into the shaft holes of the hubs 4 and 5 so as to be freely rotatable through 90 degrees. 14 is a thumb turn attached to a decorative plate 15 to be attached to the inside of the door, and the tip of its square shaft 14 ₁ is fitted into the square hole of the pinion 8.

In other figures, 16 and 17 are dead bolts 2 and 3
The click motion leaf springs 18 and 19 are
It is an elastic member such as rubber that cushions the impact noise when the dead bolts 2 and 3 retreat.

Next, in accordance with the above configuration of the present invention, the specific usage, operation, and effect of the door lock according to the present invention will be explained with reference to the illustrated embodiment.

That is, in the unlocked state shown in FIG. 2, when the duplicate key is inserted into the upper cylinder lock 11 and the plug is rotated 90 degrees clockwise, the hub 4 is rotated 90 degrees clockwise via the operation plate ₁₁₁ . However, the dead bolt 2 is made to protrude as shown in FIG. At this time, cam 4
₁ rotates together, and the sliding plate 6 is pushed downward by the pin 4 ₂ that fits into the notch 6 ₁ of the sliding plate 6 and tries to descend, but the bent piece 6 ₂ does not slide. Since it is engaged with the lower step part ₇₅ on the rear plate side of the moving body 7, the sliding body 7
The pinion 8, that is, the thumb turn 14, which meshes with the rack teeth ₇₁ ... ₇₁ of the slider 7, also rotates 90 degrees clockwise.

Next, when the lower cylinder lock 12 is operated,
Rotation of the hub 5 by the operation plate 12 ₁ causes the dead bolt 3 to protrude in the same manner as described above, but at this time, the pin 5 ₂ of the cam 5 ₁ is lowered by the stepped portion 7 ₃ to the lower part of the sliding body 7 to be engaged. Therefore, the dead bolts 2 and 3 are rotated 90 degrees clockwise without contacting them, and both dead bolts 2 and 3 are in a protruding state as shown in FIG.

In addition, as shown in FIG. 2, when the lower cylinder lock 12 is operated in the unlocked state where both dead bolts 2 and 3 are retracted, when the hub 5 rotates, the pin 5 ₂ will move to the lower part of the sliding body 7. Since it engages with the stepped portion ₇₃ and pushes it down, the sliding body 7 compresses the spring 10 in the same manner as described above, rotates the pinion 8 clockwise, and descends while rotating the thumb turn 14 by 90 degrees. The sliding plate 6 has a cam 4 ₁ that fits into the notch 6 ₁
is held by the pin ₄₂ , and is in the state shown in FIG.

Next, when the upper cylinder lock 11 is operated, the dead bolt 2 protrudes and the sliding plate 6 descends independently of the sliding body 7, resulting in the state shown in FIG.

That is, the two cylinder locks 11 and 12 can independently lock and unlock the two dead bolts 2 and 3, respectively.

Next, when operating the thumb turn 14 on the inside of the door, in the unlocked state shown in FIG.
When rotated clockwise, pinion 8 rotates,
Since the lock teeth 7 ₁ ... 7 ₁ that mesh with this are pushed down, the slide body 7 descends while compressing the spring 10 independently of the slide plate 6, and when the thumb turn 14, that is, the pinion 8 rotates 90 degrees, the slide body 7 moves down. Stepped portion 7 ₂
contacts pin 5 ₂ of cam 5 ₁ , and then thumb turn 1
4 is rotated 90 degrees, the pin 5 ₂ is pushed down to the upper step 7 ₂ , and the hub 5 is rotated 90 degrees clockwise regardless of the fixed state of the operating plate 12 ₁ and the dead bolt 3 is rotated 90 degrees.
However, when the sliding body 7 descends, the upper step ₇₄ on the rear plate side engages with the protruding piece ₆₂ of the sliding plate 6 and pushes it down, so that it fits into the notch _61. The pin ₄₂ of the cam ₄₁ is pushed down, and the hub 4 is also rotated 90 degrees clockwise to project the dead bolt 2, regardless of the fixed state of the operating plate ₁₁₁ , and both dead bolts 2 and 3 are locked at the same time. . When you release your hand from the thumb turn 14 in this state, only the sliding body ₇ rises due to the restoring force of the spring ₁₀ to the position shown in FIG. Go back in the opposite direction.

Therefore, when locking as shown in FIG. 8, if the thumb turn 14 is rotated 90 degrees counterclockwise, the pin 4
₂ and 5 ₂ are pushed up by the step part of the notch 6 ₁ and the lower step part 7 ₃ and at the same time the sliding plate 6 is also pushed up, so the hubs 4 and 5 rotate counterclockwise at the same time, and both dead bolts 2 , 3 moves back and unlocks.

That is, the two dead bolts are locked and unlocked at the same time by operating the thumb turn.

In the case of the above embodiment, the order in which the two cylinder locks are operated is not determined, so for example, if you locked both cylinders when you went out, but when you returned home you mistakenly thought that only one was locked, or In the opposite case, or if you remember locking one side but forget which one, if there is no way to confirm that the dead bolt is unlocked, you may have to take the trouble to unlock it. Since there is an inconvenience in that it takes time to unlock the door if the dead bolt is locked, elastic members 18 and 19 are provided to prevent the sound from being emitted when the dead bolt is retracted, that is, when the door is unlocked. However, it is believed that the above-mentioned inconvenience can be overcome by specifying the order in which the cylinder locks are operated, without having to confirm the retraction of the dead bolt each time.

That is, in the second embodiment shown in FIG. 6, this operation order is defined, and the rack teeth 7 provided on one side of the sliding body 7 having a U-shaped cross section are attached to the hubs 4 and 5.
Teeth _{4 3} ... 4 _{3 ,} 5 3 ... 5 3 that mesh with the teeth 4 3 ... 4 3 , 5 ₃ ... 5 ₃ that mesh with the teeth 1 ... 7 1 are provided, and also engage with the upper and lower bulging pieces 7 ₆ and 7 ₇ provided on the other side, respectively. Notches 4 ₄ and 5 ₄ are provided.

That is, in the unlocked state shown in FIG.
has risen to the top, and teeth 4 ₃ ... 4 ₃ of hub 4
are engaged with the lock teeth ₇₁ ... ₇₁ , and the notch ₅₄ of the hub 5 is engaged with the protruding piece ₇₇ at the lower end.

Therefore, even if a duplicate key is inserted into the lower cylinder lock 12 and an attempt is made to rotate the hub 5, the hub 5 cannot be rotated, so the sequence of operations is determined such that the duplicate key is first inserted into the upper cylinder lock 11 and rotated.

That is, by operating the upper cylinder lock 11, the hub 4 is
When rotated, the dead bolt 2 protrudes and at the same time the lock teeth 7 ₁ ... 7 ₁ engage with the teeth 4 ₃ ... 4 ₃
is pushed down, and the sliding body ₇ descends to the position shown in _{FIG .}
... 5 ₃ comes to the position where it engages, so when the lower cylinder lock 12 is operated and the hub 5 is rotated, the dead bolt 3 protrudes and at the same time the lock teeth 7 ₁ ...
7 ₁ is further pushed down by the teeth 5 ₃ . . . 5 ₃ , and the sliding body 7 descends as shown in FIG. At this time,
Since the bulging piece ₇₆ at the upper end is in the engagement position with the notch ₄₄ of the hub 4, when attempting to unlock the upper cylinder lock 11, it is impossible and the situation shown in Fig. 7b occurs. You must perform the operations in the reverse order.

In other words, when locking, the upper cylinder lock 11
Therefore, when unlocking the locks, a condition is imposed that each lock must be operated in order starting from the lower cylinder lock 12.

Therefore, when the door is locked, it is impossible to imagine a situation other than b or c in Figure 7, so when you return home,
The lock can be easily unlocked by first inserting a duplicate key into the upper cylinder lock 11 and checking the locked state. In other words, if you insert the duplicate key into the upper cylinder lock 11 and turn the plug, the door lock will be in the locked state shown in Figure 7b, and this operation alone will unlock the door. The door can be opened. In addition, if rotation is not possible,
Since the door lock is in the locked state shown in FIG. 7c, it is only necessary to operate the door locks in order starting from the lower cylinder lock.

In other words, by specifying the order of locking/unlocking operations, unlocking operations from outside have become extremely easy, and the uncertainty of confirming by sound as in the first embodiment can be eliminated. be.

As described above, according to the door lock according to the present invention,
Two dead bolts are provided in the same lock case, and two cylinder locks installed on the outside of the door can be used to lock and unlock the two dead bolts separately, and one thumb turn on the inside of the door can lock and unlock both dead bolts in common. Even if the two dead bolts are in different states, if you turn the thumb turn in the locking or unlocking direction, only the dead bolt that is in the unlocked or locked state will protrude or retreat and lock or unlock. Since both dead bolts are always in the same condition, only one lock case is required compared to the case where two independent locks are installed, the installation work is easy, and the price of the door lock itself is also reduced. It is cheaper than individual locks, the installation cost is low, it has a good appearance, and two dead bolts can be locked and unlocked in common with a single thumb turn operation, so it is less expensive to install than two separate locks. This eliminates the inconvenience of forgetting the thumb turn operation of one lock and being unable to utilize the double lock function.

[Brief explanation of drawings]

The drawings illustrate embodiments of the invention.
The figures show the door lock according to the present invention attached to a door; a is a side view from the outside of the door, b is a front view, c is a side view from the inside of the door, and Figure 2 is a side view of the door from the inside. Figure 3 is a side view with one side plate of the case removed when the lock is unlocked, Figure 3 is a side view of the door with the upper dead bolt locked, Figure 4 is the lower dead bolt. 5A is a cross-sectional view of the main part taken along the line A-A in FIG. 2; FIG. FIG. 6 is a side view showing a second example of the door lock of the present invention in an unlocked state; FIGS. Figure 8 is a side view with one case side plate removed with both dead bolts locked, and Figure 9 is a side view with both dead bolts locked.
FIG. 10 is a perspective view showing the relationship between the sliding plate and the sliding body, and FIG. 10 is a perspective view showing details of the sliding body. 1...Lock case, 2, 3...Dead bolt,
4, 5...Hub, 6...Sliding plate, 7...Sliding body,
8...Pinion, 11,12...Cylinder lock,
14...Thumb turn.

Claims (1)

[Claims] 1. In a door lock with two dead bolts in the same lock case, the two cylinder locks can lock and unlock the two dead bolts separately,
A door lock characterized by being configured so that both dead bolts can be locked and unlocked with one thumb turn.