JPH09112091A - Electric lock for sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent seizure of a micromotor even when dislocation is caused between a locking part of a vertical rod and a receiving hole and to lightly operate even at the time of manually actuating it through a cylinder lock or a thumb turn. SOLUTION: A rod for locking and a micromotor 3 is interlocked with each other by a revolving member 71 with such as a speed reducer 4, a differential gear device 5, first and second pinions 64, 65, first and second racks 61, 62, an intermediate transmission gear 68, a cam part 73, and a first and second acting member 74, 75 with a connecting means 95 and an escape spring 7 interposed between them, locking lever 81, a control level 82, etc. A tail piece and/or a thumb turn of a cylinder lock are (is) interlocked with the intermediate transmission gear 68 or the revolving member 71. A swing arm 53 of the differential gear device 5 is devised to occupy a neutral position, a locking and unlocking work position or an unlocking work position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel electric lock for a sliding door in which a vertical rod having a locking portion at its tip locks the sliding door.

[0002]

2. Description of the Related Art Electric locks for sliding doors, in which a locking rod provided so as to be movable up and down with respect to a sliding door, are operated by a micromotor or the like, have not been practically used.

[0003]

The electric lock for a sliding door according to the present invention does not have a sickle for locking, and the sliding door can be electrically locked and unlocked only by the locking rod. The purpose is to lock the misalignment between the locking part at the rod tip and the receiving hole on the lateral member of the door frame during the locking operation to prevent vertical movement for locking. However, it is necessary to prevent the micromotor in the lock box from being burned and damaged.

Another object of the present invention is to enable light operation without applying a heavy load when manually attempting the locking / unlocking operation through the cylinder lock or thumb turn.

[0005]

In order to solve the above-mentioned problems, an electric lock for a sliding door according to the present invention is provided with a vertical rod having a locking portion at its tip so as to be vertically movable with respect to the sliding door; The stop is to be selectively engaged with and disengaged from the lateral member of the door frame; the micromotor is provided in the lock box fixed to the sliding door; the sun gear via the speed reducer on the output shaft of the micromotor. Connecting a differential gear device composed of a planetary gear and a swing arm; providing a first rack and a second rack, which are vertically slidable in a lock box, facing a position sandwiching the swing arm; The first pinion is meshed with one rack and the second pinion is meshed with the second rack; the planetary gear of the differential gear device is in a neutral position by swinging of a swing arm, a meshing position with the first pinion, or It is possible to selectively occupy the meshing position with the two pinions; the first pinion and the second pinion respectively have the first disengaging means and the first disengaging means for releasing the meshing with the planetary gear at the completion of the locking operation. 2 disengagement means are provided; an intermediate transmission gear that is pivotally supported by a lock box and that displaces both racks in upside down directions is meshed with the first rack and the second rack; sector gear section and The pivoting member having the cam portion is pivotally supported on the lock box, and the sector gear portion is meshed with the first rack; the cam gear portion is brought into contact with the unlocking position and the locking position. The first that can slide between
Providing an actuating member and a second actuating member; interposing a coupling means and a relief spring between the first and second actuating members; attaching the proximal end of the rod to the second actuating member; locking A locking lever that is pivotally attached to the box and selectively locks the second actuating member when locked and a cam portion that is pivotally attached to the second actuating member controls the engagement / disengagement of the engaging lever with respect to the second actuating member. A control lever; and a tail piece and / or a thumb turn of a cylinder lock provided in the sliding door are linked to the intermediate transmission gear or the rotating member.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the embodiments shown in the drawings. 1 to 3, reference numeral 10 is a sliding door, 20 is a door frame, and 30 is an upper frame of the door frame 20 and other lateral members.

Inside the sliding door 10, a locking portion 11 is provided at the tip.
A vertical rod 1 having a vertical axis is provided so as to be movable up and down. The locking portion 11 of the rod 1 is selectively engaged with and disengaged from the lateral member 30 of the door frame 20 to lock the sliding door 10 (see FIG. 3) or It can be in an unlocked state (see FIGS. 1 and 2).

A lock box 2 fixed in the sliding door 10 with screws 91 and the like is provided with a micromotor 3 capable of rotating in the forward and reverse directions, and the output shaft of the micromotor 3 is, for example, a bevel gear 41 and It is connected to a differential gear device 5 including a sun gear 51, a planetary gear 52 and a swing arm 53 via a speed reducer 4 including a large bevel gear 42 and the like.

Large bevel gear 42 coaxially and integrally coupled
The rotation shaft of the sun gear 51 is supported by the side plate of the lock box 2, and one end of the swing arm 53 is rotatably attached to the rotation shaft.

A planetary gear 52, which is rotatably supported on the other end of the swing arm 53, meshes with the sun gear 51.

[0011] Then, in the lock box 2, the first slideable up and down facing the position sandwiching the swing arm 53
A rack and a second rack are provided. Appropriate guide means 63 are provided on the first rack 61 and the second rack 62, respectively, and a part of the inner surface of the lock box 2 also serves as guide means.

On the first rack 61, the first pinion 6 serving as a receiving gear for the planetary gear 52 on the swing arm 53 is formed.
Similarly, the second rack 62 has a second pinion 6 which is a receiving gear of the planetary gear 52 on the swing arm 53.
5 are engaged with each other. Both pinions 64, 65
Are both rotatably supported in the lock box 2.

The planetary gear 52 of the differential gear device 5 has a neutral position (position in FIG. 2) depending on a position of a swing arm 53 that swings around a common rotation axis of the bevel gear 42 and the sun gear 51. The meshing position with the pinion or the meshing position with the second pinion 65 can be selectively occupied.

In FIG. 2, when the micromotor 3 rotates counterclockwise when viewed from above, the small bevel gear 41, the large bevel gear 42, the sun gear 51 and the planetary gear 52 are respectively counterclockwise, clockwise, It rotates clockwise and counterclockwise, and the swing arm 53 swings clockwise so that the planetary gear 52 meshes with the first pinion 64.

When the micromotor 3 is rotated in the opposite direction,
The swing arm 53 swings counterclockwise to move the planetary gears 5.
2 meshes with the second pinion 65.

Further, the first pinion 64 and the second pinion 65 each have a first disengaging means 66 for releasing the meshing with the planetary gear 52 at the completion of the locking operation and the unlocking operation.
And a second separating means 67 is provided.

The first separating means 66 of the embodiment is one in which one of the teeth of the first pinion 64 is thickly formed, and when the locking operation is completed, the thickened tooth is one of the swing arms 53 (right side in FIG. 2). Is pushed to disconnect the engagement between the first pinion 64 and the planetary gear 52.

Similarly, the second separating means 67 in the illustrated example is also formed by thickening one of the teeth of the second pinion 65, and when the unlocking operation is completed, the thickened tooth is the other one of the swing arm 53 (see FIG. 2). The left side) to push the second pinion 6
The meshing between 5 and the planetary gear 52 is disconnected.

As described above, the differential gear device 5 acts as a kind of clutch mechanism together with the first and second disengaging means 66 and 67.

Further, the first and second racks 6 facing each other
An intermediate transmission gear 68, which is rotatably supported by the lock box 2 and displaces both racks 61 and 62 in the upside-down direction, is meshed between the first and the second gears 62. Reference numeral 69 is the intermediate transmission gear 6
8 is a stopper that restricts the range of the rotation angle of 8.

Reference numeral 71 is a rotating member pivotally supported on the side plate of the lock box 2, and the rotating gear 71 is integrally provided with a sector gear portion 72 and a cam portion 73.

The sector gear portion 72 is meshed with the first rack 61, and the cam portion 73 is capable of sliding up and down in the lock box 2 between an unlocked position and a locked position. It is linked to the actuating member 75.

The first operating member 74 in the illustrated example has a plate shape, and the second operating member 75 has a box shape with one (downward) opening.

The first and second actuating members 74, 75 are provided with appropriate guide means 76, and a part of the inner surface of the lock box 2 also serves as guide means.

A relief spring 77 such as a compression spring is interposed between the first operating member 74 and the second operating member 75, and
A horizontal pin 96 and its pin 9 are provided between both members 74 and 75.
By the connecting means 95, which is made up of the elongated holes 97 in the vertical direction (vertical direction) in which 6 is fitted, and which allows the vertical displacement,
They are slidably connected to each other.

Further, the base end of the above-mentioned rod 1 is attached to the second actuating member 75 via an integral attaching piece 78 with a screw or the like (see FIG. 1). The rod 1 is not shown in FIG.

The cam portion 73 of the rotating member 71 is the first
The driven notch 79 (see FIG. 3) below the actuating member 74 is brought into contact with and engaged with the rotary member 71, that is, the cam portion 73.
Rotation of the first operating member 74 and the second operating member 75.
2 together with the escape spring 77 in which
It is possible to slide up and down by a distance d between the unlocked position of 1 and the locked position of FIG. Cam portion 73 and driven notch 7
The related structure of 9 is also used for the conventional horizontal sliding type dead bolt.

In the escape spring 77, the locking portion 11 at the tip of the rod 1 is engaged with the lateral member 30 of the door frame 20 when the sliding door 10 is locked.
Only when the vertical movement of the rod 1 becomes impossible due to the deviation from the upper receiving hole 40, the first actuation is performed with respect to the second actuating member 75 which is immovable due to its own compression action. Member 7
4 is moved upward in FIG. 2 so as to escape.

Further, in the electric lock of the present invention, the locking lever 81 pivotally mounted on the lock box 2 and selectively locking and locking the second actuating member 75 at the time of locking, and the first actuating member 74. A control lever 82 pivotally mounted on the control lever 82 controls the engagement / disengagement of the locking lever 81 with respect to the second actuating member 75 by rotating the cam portion 73.

The locking lever 81 is urged by a torsion spring or any other type of spring 83 in a direction in which the tip end side thereof approaches the second operating member 75, and as shown in FIG.
When 5 reaches the locked position, the tip of the locking lever 81 is urged by the spring 83 so that the jaw portion 80 provided on the second actuating member 75.
Engages.

The control lever 82 has one end (upper end).
Is biased by a torsion spring or another type of spring 84 in a direction away from the locking lever 81.

The cam portion 73 of the rotating member 71 is at an intermediate position from the locking position (see FIG. 3) to the unlocking position (see FIG. 2), and the other end of the control lever 82 is provided with a pin 73a or the like. It abuts.

Therefore, in the intermediate position, the control lever 82 releases the engagement between the locking lever 81 and the second actuating member 75 at one end thereof against the spring 84.
The actuating member 75 is allowed to be displaced in the unlocking direction together with the first actuating member 74 while being held by the escape spring 77 due to the cam action between the cam portion 73 and the driven notch 79.

Furthermore, in the present invention, the sliding door 10
The tail piece and / or thumb turn (not shown) of the cylinder lock provided in the above are linked to the intermediate transmission gear 68 or the rotating member 71 described above.

In the figure, reference numeral 92 is an opening leg spring for giving a snap action when the first rack 61 moves up and down, 93
Indicates a micro switch that is activated when locking or unlocking is completed.

[0036]

In the electric lock for a sliding door according to the present invention as described above, the swing arm 53 of the actuating gear device 5 is in the neutral position during locking or unlocking, so that the planetary gears of the differential gear device 5 are protected. The gear 52 does not mesh with either the first pinion 64 or the second pinion 65.

In this non-engaged state, when the locking operation or the unlocking operation is completed (finished), the first disconnecting means 66 of the first pinion 64 or the second disconnecting means 67 of the second pinion 65 positions the swing arm 53 at the neutral position. It is achieved by pushing toward.

Therefore, in this state, the locking rod 1 and the micromotor 3 are mechanically disconnected from each other. Therefore, when the locking / unlocking operation is manually performed using a cylinder lock or thumb turn, Since the rod 1 is operated independently of the micromotor 3, it can be operated lightly without applying a large load.

In the unlocked state of FIG. 2, when the micromotor 3 is energized and rotated in the locking direction, the swing arm 53 swings clockwise and each gear, the rack 61,
62, the rotating member 71, and the operating members 74 and 75 respectively rotate or slide in the directions of the arrows.

When the second actuating member 75 reaches the locking position, the locking lever 81 is engaged with the actuating member 75 by the spring 83, as shown in FIG. 3, to hold the rod 1 immovably in the locking position. .

At the same time, the first disconnecting means 66 acts to return the swing arm 53 of the differential gear unit 5 to the neutral position,
Further, the micro switch 93 is activated to cut off the power supply to the micro motor 3.

By the way, when the locking operation is performed, the locking portion 11 of the rod 1 and the receiving hole 40 on the lateral member 30 on the door frame 20 side are deviated from each other, and the locking portion 11 cannot be inserted into the receiving hole 40. In this case, according to the present invention, the displacement of the first actuating member 74 relative to the stationary second actuating member 75 is released during the displacement of the first actuating member 74 from the unlocked position to the locked position.
Since it can be released by 7, it is possible to prevent the micromotor 3 from rotating under an overloaded condition. Therefore, in such a case, damage due to seizure of the micromotor 3 can be avoided.

Next, the unlocking operation of the electric lock according to the present invention in the locked state shown in FIG. 3 will be described.

When the micromotor 3 is energized and rotated in the unlocking direction, the swing arm 53 in the neutral position swings counterclockwise, and the gears, the racks 61 and 62, and the rotating member 71 are described above. It rotates or slides in the direction opposite to (the direction of the arrow in FIG. 2).

Then, by rotating the control lever 82 clockwise in FIG. 3 at the initial stage of the rotation of the cam portion 73 of the rotating member 71, one end of the control lever 82 pushes the locking lever 81 to swing it. . Here, the engagement between the locking lever 81 and the second operating member 75 is released.

When the rotation of the cam portion 73 is further advanced, the first operating member 74 is connected to the second operating member 75 by the connecting means 95.
And the escape spring 77 are pushed together and pushed back to the unlocked position,
The locking portion 11 of the rod 1 is pulled out from the receiving hole 40 of the door frame 20.

At the same time when the second rack 62 returns to the position shown in FIG. 2, the second separating means 67 acts to swing the swing arm 5
3 is returned to the neutral position, and the micro switch 93 is activated to cut off the power supply to the micro motor 3. Here, a series of unlocking operations are completed.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of an electric lock for a sliding door of the present invention in an unlocked state.

FIG. 2 is an enlarged partial vertical sectional side view showing the entire structure in the lock box in an unlocked state.

FIG. 3 is an enlarged partial vertical sectional side view showing a partial structure in the lock box in a locked state.

[Explanation of symbols]

 10 Sliding Door 20 Door Frame 30 Lateral Member 1 Rod 11 Locking Part 2 Lock Box 3 Micro Motor 4 Reducer 5 Differential Gear Device 51 Sun Gear 52 Planetary Gear 53 Swing Arm 61 1st Rack 62 2nd Rack 64 1st Pinion 65 2nd pinion 66 1st disconnecting means 67 2nd disconnecting means 68 Intermediate transmission gear 71 Rotating member 72 Sector gear part 73 Cam part 74 1st operating member 75 2nd operating member 77 Relief spring 81 Locking lever 82 Control lever 95 Connection means

Claims (1)

[Claims] 1. A vertical rod having a locking portion at its tip is provided so as to be vertically movable with respect to a sliding door; the locking portion of the rod is selectively engageable with and disengageable from a lateral member of a door frame. ;
Providing a micromotor in a lock box fixed to a sliding door; connecting a differential gear device consisting of a sun gear, a planetary gear and a swing arm to a output shaft of the micromotor via a speed reducer; Providing a first rack and a second rack which are vertically slidable so as to be opposed to a position sandwiching the swing arm; a first pinion is engaged with the first rack, and a second pinion is engaged with the second rack. The planetary gear of the differential gear device can selectively occupy a neutral position, a meshing position with the first pinion, or a meshing position with the second pinion by the swing of the swing arm; the first pinion And the second
The pinion is provided with a first disengagement means and a second disengagement means, respectively, for disengagement with the planetary gear when the locking operation is completed; both the first rack and the second rack are pivotally supported by a lock box. The intermediate transmission gears for displacing the racks in the upside-down direction are meshed with each other; the rotating member having the sector gear portion and the cam portion is pivotally supported on the lock box, and the sector gear portion meshes with the first rack. Providing a first actuating member and a second actuating member which come into contact with the cam portion and can be slid between an unlocked position and a locked position by the rotation of the cam portion; A connecting means and a relief spring between the second actuating member and the second actuating member; attaching the base end of the rod to the second actuating member; Locking lever and lock to lock A control lever pivotally attached to the actuating member for controlling engagement / disengagement of the locking lever with respect to the second actuating member by turning of the cam portion; An electric lock for a sliding door whose construction condition is that a tail piece and / or a thumb turn are linked.