JPH0674770U - Electric lock on sliding door - Google Patents

Abstract

(57) [Abstract] [Purpose] The locking / unlocking operation of the electric lock of the sliding door by the electromagnetic actuator and the locking / unlocking operation by the manual operation can be used together and the operation is ensured. [Structure] One end of a hook-shaped hammer 4 is rotatably supported in a lock box 1, and an operating plate 6 is vertically movable and guided by a portion of the hammer 4 near a hammer shaft 5. The hook driving pin 7 is engaged. On the other hand, a connecting rod 14 is arranged on the operating plate 6, and a trigger rod 21 is arranged on the side plate 1a of the lock box so as to be movable in the front-rear direction perpendicular to the front plate 3, and the trigger rod 21 is projected outside the front plate 3. Both ends of the lever 23 are engaged with the connecting rod 14 and the trigger rod 21, respectively. When the sliding door is closed, the connecting rod 14 is projected from the lock box and engaged with the rack body 28 driven by the micromotor 27 provided on the door frame side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric lock for a sliding door, and more particularly, to an electric lock for a sliding door that can be locked and unlocked by an electromagnetic actuator and manually locked and unlocked.

[0002]

[Prior art]

 Conventionally, as an electric lock of a sliding door, a dead bolt insertion hole is opened at the upper edge of the sliding door, and on the other hand, when the sliding door is closed, a portion of the door frame aligned with the dead bolt insertion hole is driven by, for example, a micro motor to move vertically. There is a type in which a dead bolt guided so as to be movable is provided, and the sliding door is locked by inserting the dead bolt into the dead bolt insertion hole.

The electric lock for a sliding door described in Japanese Patent Laid-Open No. 61-290176 utilizes the movement of the sliding door just before the closing of the sliding door to swing out a hook-shaped hook from the front end frame, It is configured so that it is inserted into the opening of the frame and this solenoid is fixed by a solenoid.

Furthermore, in the electric lock of the sliding door described in Japanese Patent Laid-Open No. 62-55383, when one rack is moved by the pair of racks and gears meshing with these racks, the other rack moves in the opposite direction. When the sliding door is closed, one rack is moved vertically by a solenoid, and the operating rods connected to these racks are inserted into the upper and lower openings of the door frame like a so-called gremone lock. Lock.

In addition, similar electric locks for sliding doors are described in Japanese Patent Laid-Open Nos. 62-41880 and 62-78383.

[0006]

[Problems to be solved by the device]

 However, in general, many conventional electric locks for sliding doors use a solenoid with a small operating stroke as an electromagnetic actuator, and it is difficult to expect stable and reliable operation when the rattling of mechanical parts is taken into consideration. There is inconvenience.

In addition, the electric lock of the sliding door of the type in which the dead bolt is driven by the above-mentioned micromotor, which seems to operate reliably, has a dead bolt insertion hole to prevent dust and the like from entering the dead bolt insertion hole. A hole must be opened in the upper edge of the sliding door, which in turn makes the manual locking and unlocking operation inconvenient.

Furthermore, the electric locks of the sliding doors described in JP-A-61-290176 and JP-A-62-55383, in particular, are not suitable for manual locking / unlocking operations due to their mechanism.

Therefore, it is no exaggeration to say that electric locks for sliding doors have not been put into practical use.

Therefore, an object of the present invention is to provide an electric lock for a sliding door, which can be locked and unlocked by an electromagnetic actuator and manually locked and unlocked, and which can be expected to operate reliably. This invention is an improvement of the electric lock of the sliding door of Japanese Patent Application No. 4-171912 filed by the present applicant.

[0011]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a lock box mounted on a door frame of a sliding door, and one end of which is rotatably supported in the lock box in the front near the front plate. A hook-shaped hook and a lock box are guided so as to be movable in the vertical direction along the side plate of the lock box, and the end of the hook is engaged near the support point of the hook, and by a key or an operation member on the inside of the room. An operating plate connected to the operated dharma assembly with a linkage rod, carried by this operating plate, extending in a direction perpendicular to the front plate, and guided in the longitudinal direction so as to be movable with respect to the operating plate. In addition, the connecting rod that can be displaced together with the actuating plate in the vertical direction and the connecting rod on the side plate of the lock box are arranged substantially parallel to each other, and are guided to be movable in the front-rear direction, and the front end is Is urged in a direction that penetrates the plate and projects outward It is arranged between the trigger rod and this trigger rod and the connecting rod, and the central part is rotatably supported by the side plate of the lock box, and one end is engaged with the trigger rod and the other end is connected to the connecting rod. The retractable lever that is engaged and disengaged, the strike plate that is attached to the door frame that faces the front plate of the lock box when the sliding door is closed, and the back side of this strike plate that can be moved vertically A rack body having an engaging portion that engages with the connecting rod protruding forward, a reduction gear group for operating the rack body, and a micromotor connected to the reduction gear group via an electromagnetic clutch. It is characterized in that the front plate and the strike plate are formed with vertical elongated holes so as not to interfere with the vertically moving connecting rod.

[0012]

[Action]

 In the electric lock of the sliding door according to the present invention constructed as described above, the lock box is attached to the door frame of the sliding door, and the strike plate is attached to the door frame facing the door frame.

When the sliding door is open, the front plate of the lock box and the strike plate of the door frame are separated from each other. Therefore, the trigger rod in the lock box is projected outward from the front plate by its biasing force, and the connecting rod engaged with the other end of the lever is moved symmetrically with the trigger rod. It is in a retracted state inside the box.

Then, when the sliding door is closed, the trigger rod projecting outward from the front plate of the lock box is pushed into the lock box by the front plate of the door frame.

Therefore, the connecting rod, which is connected to the trigger rod via the lever and moves symmetrically with the trigger rod, projects outward from the front plate and is inserted through the long holes in the upper and lower directions opened in the front plate. Engage with the engaging portion of the rack body.

After the sliding door is closed, when the operating plate is manually moved in the up and down direction through the dharma assembly and the connecting rod by the key or the operating member on the indoor side, the connecting rod is separated from the other end of the lever and the operating plate is moved. Moves in a predetermined direction, and in this process, the end of the actuating plate on the side of the cam moves the cam, shakes it out of the front plate, and shakes it into the kick-in hole opened in the strike plate. . Therefore, the sliding door can be locked manually.

When locking manually, since the connecting rod is integrally engaged with the rack body, the rack body also moves in a predetermined vertical direction together with the operating plate. At times, the rack body and the reduction gear group are mechanically separated from the micromotor by the electromagnetic clutch, so that no extra load is applied to the hand of the person who operates the key or the operation member.

On the other hand, when a predetermined positive or negative voltage is applied to the micromotor for the purpose of locking after closing the sliding door, the electromagnetic clutch is activated at the same time, the reduction gear group is connected to the micromotor, and the rack body is closed. It is driven in a predetermined direction in the vertical direction, that is, in the direction in which the operating plate is manually moved.

Then, since the rack body is connected to the actuation plate through the connecting rod, the actuation plate moves integrally with the rack body in the locking direction, and the hammer is shaken out of the front plate as described above. The sliding door is locked.

As described above, the electric lock of the sliding door locked manually or by the micromotor is operated by manually moving the operating plate in the unlocking direction, that is, the direction opposite to the locking direction, or by the micromotor. It is possible to unlock the electric lock of this sliding door by rotating the operating plate in the unlocking direction by rotating the lock in the direction opposite to the locking direction and swinging the hammer back into the lock box.

[0021]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. First, in FIG. 1, reference numeral 1 indicates a lock box, and the lock box 1 is mounted on a door frame 2 of a sliding door.

A comb 4 is arranged in the lower part of the lock box 1 and near the front plate 3. The hook 4 is a hook-shaped member as a whole, and one end (upper end) of the hook 4 is rotatably supported by a hook shaft 5, and is guided so that it can be rotated in a plane parallel to the side plate 1a of the lock box 1. Has been done.

On the other hand, below the inside of the lock box 1, there is arranged an operating plate 6 which is slidably in contact with the side plate 1 a of the lock box 1 and which is guided so as to be vertically movable.

A hook driving pin 7 is planted in front of the lower end of the operating plate 6, and the hook driving pin 7 is loosely fitted in a receiving hole 4 a opened near the hook shaft 5. With the above structure, when the operating plate 6 is lowered in the unlocked state of the electric lock of the sliding door, the hammer 4 driven by the hammer driving pin 7 rotates clockwise with the hammer shaft 5 as the rotation axis. Then, as shown by the chain line in FIG. 1, the sliding door 51 is swung out from the front plate 3 of the lock box 1 and lowered into the door insertion hole 9 opened in the strike plate 8 mounted on the door frame 50. Locked.

In the figure, reference numeral 25 is a torsion spring that exhibits a click action when the hammer 4 is operated.

Further, the back plate 6a formed at the rear of the operating plate 6 is engaged with the lower end portion of the linking rod 45 guided along the inner surface of the back plate 1b of the lock box 1, and A rack 46 is provided at the upper end of the rod 45.

The dharma assembly shown by the reference numeral 47 has a known structure, and is equipped with a gear 48 which is rotated by a rotating operation of a key or a thumb turn. The gear 48 is meshed with the rack 46.

Therefore, the linkage rod 45 can be slid up and down through the gear 48 and the rack 46 by the turning operation of the key or thumb turn, and the operating plate 6 can also be slid up and down. .

Although this is not an essential configuration of the present invention, in the illustrated example, an open leg spring 11 as a torsion coil spring is provided, and one end of the open leg spring 11 is planted in the operating plate 6. The other end of the spring hooking pin 12 is rotatably locked to the column 13 which is planted in the side plate 1a of the lock box.

Therefore, this open leg spring 11 constitutes a kind of thought point mechanism, and when the actuating plate 6 exceeds the thought point in the process of moving in the vertical direction, the open leg that has been acting as resistance until then. Since the elastic force of the spring 11 serves as an external force for driving the operating plate, a snap action property is imparted to the operating plate 6 and the so-called crimping of the movement of the operating plate 6 is improved.

A connecting rod 14 extending in the front-rear direction (left-right direction in FIG. 1) perpendicular to the front plate 3 is carried in the central portion of the operating plate 6, and is moved in the longitudinal direction, that is, the front-rear direction. Guided as possible.

That is, two elongated holes 16, 16 along the length direction of the connecting rod 14 which is an elongated plate-like body are respectively penetrated through the two pins 15 which are planted in the horizontal direction of the operating plate 6. With this, the connecting rod 14 is guided so as to be movable in the front-rear direction with respect to the operating plate 6 and the lock box 1.

On the other hand, a trigger rod 21 is arranged at a slightly lower portion of the dharma assembly 47 in the lock box 1. The trigger rod 21 is an elongated member extending in the front-rear direction, and is guided in the side plate 1a of the lock box 1 so as to be movable in the front-rear direction independently of the actuating plate 6 and mounted at its rear end. Due to the elasticity of the trigger spring 22 as a compression coil spring, the front end portion is urged in a direction of penetrating the front plate 3 and protruding outward.

On the other hand, a lever 23 is arranged between the trigger rod 21 and the connecting rod 14. The lever 23 is a substantially linear plate-like member, and the central portion thereof is pivotally supported by the side plate 1a of the lock box 1 so as to be rotatable.

Further, connecting pins 24 are planted at both ends of the lever 23, and one connecting pin 24 is provided in a U-shaped unnumbered receiving groove formed below the trigger rod 21 and the other. The connecting pins 24 are engaged with chamfered U-shaped receiving grooves formed above the connecting rods 14, respectively.

In particular, since the receiving groove of the connecting rod 14 is formed with a chamfer, it can be engaged with and disengaged from the connecting pin 24 even when the connecting rod 14 moves up and down together with the operating plate 6.

On the other hand, at the portion of the door frame 50 that opposes the front plate 3 of the door sill when the sliding door is closed, the strike plate 8 and the troyooke 26 integral with the strike plate 8 are mounted.

A micromotor 27 is attached to the upper part of the troyooke 26 with its output shaft facing downward, and a known electromagnetic clutch 52 is provided below the micromotor 27.

The output shaft of the micromotor 27 is connected to the input shaft of the electromagnetic clutch, and the output shaft facing downward of the electromagnetic clutch 52 is equipped with a first gear 31 which is a bevel gear. The first gear 31 meshes with a second gear 32, which is a large-diameter bevel gear rotatably supported in the troyooke 26.

A small-diameter third gear 33, which is coaxially and integrally connected to the second gear 32, is linked to the rack body 28 via a fourth gear 34, which is a separate shaft and meshes with the third gear 33. The gear group from the first gear 31 to the fourth gear 34 constitutes a speed reducer.

Normally, the micromotor 27 and the electromagnet clutch 52 are inserted in parallel to the power feeding circuit, and when the energization is released by a switch (not shown), the micromotor 27 and the electromagnetic clutch 52 are in the inoperative state. Becomes That is, the rotation of the micromotor 27 is stopped and the electromagnetic clutch 52 is turned off.

The above-mentioned rack body 28 is slidably provided along the back plate 53 of the strike plate 8 in the troyooke 26, and the lower side of the rack body 28 has an engaging portion formed of a rectangular opening. 36 is formed.

Further, the front plate 3 and the strike plate 8 are provided with vertical elongated holes 37 and 37a, respectively, in order to avoid interference with the vertically moving connecting rod 14.

Although this is not an essential component of the present invention, a protective tube 38 having a vertically long and slender rectangular cross section is loosely fitted in the elongated hole 37 formed in the front plate 3.

The protection cylinder 38 is guided in the lock box 1 so as to be movable in the front-rear direction, and on its side surface, as shown in FIG. The slightly inclined cam hole 39 is opened, and the pin 15 embedded in the operating plate 14 is slidably engaged with the cam hole 39.

In FIG. 1, reference numeral 41 indicates a permanent magnet, and reference numeral 42 indicates a reed switch. These permanent magnet 41 and reed switch 42 generate a sliding door closing signal. Since it is not a summary, a more detailed description will be omitted.

Reference numeral 54 is an open leg twist type click spring mounted between a mounting piece 55 fixed to the lower end of the rack body 28 and a mounting piece 56 fixed to the troyooke 26 side.

Since the electric lock of the sliding door according to the embodiment of the present invention is configured as described above, the trigger rod 21 projects from the front plate 3 by the elasticity of the trigger spring 22 when the sliding door 51 is opened. The locked state is maintained, and the connecting rod 14 is retracted into the lock box. At this time, the upper end portion 6b of the operating plate 6 engages with the trigger rod 21, and the operating plate 6 cannot be pushed down.

When the sliding door 51 is closed, the trigger rod 21 is pushed into the lock box 1, while the connecting rod 14 projects from the front plate 3 and is inserted into the long hole 37 a opened in the strike plate 8 to insert the rack body. It engages with the engaging portion 36 opened in 28.

When the micromotor 27 is rotated in a predetermined direction in this state, the rack body 28 lowers the operating plate 6 through the connecting rod 14, and the sliding door 51 is locked by rotating the hammer 4.

In the locking process, when the connecting rod 14 descends together with the operating plate 6, a wedge formed between the pin 15 planted in the operating plate 6 and the cam hole 39 of the protective cylinder 38. By the action, the protective cylinder 38 projects outward from the front plate 3 and surrounds the connecting rod 14 to protect it. Therefore, it is possible to prevent the connection rod 14 exposed in the gap (so-called chirp) between the front plate 3 and the strike plate 8 from being operated and unlocked illegally.

When the micromotor 27 is rotated to the opposite side to the locking, the rack body 28 rises and the actuating plate 6 also rises with it, so that the hammer 4 is pulled into the lock box 1 and unlocked. .

In the troyoke 26 of the illustrated example, for example, an L-shaped guide projection 60 is fixed to the outside of the upper portion by a screw 61 or the like so as to project, and, for example, a U-shaped mounting piece. 62 is slidably mounted. In short, the two leg portions of the U-shaped mounting piece 62 are inserted into the through holes formed in the guide projection 60, and the central flat plate portion 63 of the mounting piece 62 is fixed to the troyoke 26 by a strike or the like. The flange portion 8a of the plate 8 is made to face.

While the flange portion 8 a is provided with a screw hole, the central flat plate portion 63 of the mounting piece 62 is provided with a tap hole (female screw). The guide projection 60 can be provided with an escape hole for the screw 64 that penetrates the screw hole of the flange portion 8a and is screwed into the tap hole.

In order to mount the troyoke 26 including the strike plate 8 on the vertical frame of the door frame 50 by using the mounting device having the above-described structure, below the opening for mounting the troyoke provided on the vertical frame of the door frame 50. For example, the edge of the vertical frame can be fitted between the strike plate 8 and the back plate 53 and fixed with a screw 65, and the strike plate 8 can be attached by any means. Between the flange portion 8a of the plate 8 and the flat plate portion 63 of the mounting piece 62, fit the edge of the vertical frame above the troyoke opening of the door frame 50, and then attach the mounting piece 62 with the screw 64. The vertical frame edge is firmly sandwiched between the flat plate portion 63 of the mounting piece 62 and the flange portion 8a of the strike plate 8.

As a result, the troyoke 26 including the strike plate 8 is fixedly attached to the vertical frame of the door frame 50.

The mounting device described above is used not only for the troyooke 26 but also for mounting a case of locks such as the lock box 1 on a door frame or a door, either above or below the opening for mounting the case. Can be applied to both, and can be applied to both.

In this type of conventional mounting, there were problems and troubles such as thickening the plate constituting the frame to provide a screw hole in the frame and providing a back plate on the frame. There is also a means to attach the frame by inserting a frame between the front plate of the lock and the front back plate with the tap hole, and according to this method, the two plates are held and screwed to the frame. Therefore, the installation work was troublesome. This attachment device can eliminate these problems.

[0059]

[Effect of device]

 As is clear from the above description, according to the present invention, the actuating plate for controlling the sliding door locking hook can be driven by the micromotor from the front plate side via the reduction gear group and the electromagnetic clutch. It is also possible to obtain an electric lock for a sliding door that can be locked and unlocked by electric power.

Further, since the micromotor is adopted as the electromagnetic actuator, there is no limitation on the operation stroke and there is no structural limitation on the locking mechanism, so that the reliability of the operation can be expected.

Further, the trigger rod is projected from the front plate of the lock box, and when the sliding door is closed, the trigger rod is pushed into the lock box by the strike plate of the door frame to connect the connecting rod and the rack body. As a result, various effects such as the prevention of erroneous operation due to the connection mechanism being exposed to the outside when the door is opened can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical side view of an electric lock of a sliding door according to an embodiment of the present invention, showing a state in which the sliding door is closed and the electric lock is unlocked.

[Explanation of symbols]

 1 Lock Box 2 Door End Frame 3 Front Plate 4 Kama 6 Operating Plate 7 Kama Drive Pin 8 Strike Plate 9 Kama Insertion Hole 14 Connecting Rod 15 Pin 17 Guide Hole 21 Trigger Rod 23 Lifting Lever 24 Connecting Pin 27 Micro Motor 28 Rack Body 37 Slot 37a Slot

Claims (1)

[Scope of utility model registration request] 1. A lock box mounted on a door frame of a sliding door, a hook-shaped hook having one end rotatably supported in the front of the lock box near the front plate, and a lock box. Is guided so as to be movable in the up-down direction along the side plate, engages the end on the side of the sickle near the supporting point of the sickle, and is connected to the dharma assembly operated by the key or the operation member on the indoor side with the linkage rod. And an operating plate that is carried by the operating plate, extends in a direction perpendicular to the front plate, is guided so as to be movable with respect to the operating plate in the longitudinal direction, and is vertically movable together with the operating plate. A direction in which the displaceable connecting rod and the side plate of the lock box are arranged substantially parallel to the connecting rod, are guided so as to be movable in the front-rear direction, and the front end portion penetrates the front plate and projects outward. And the trigger rod that was urged by And the connecting rod, the central portion of which is rotatably supported by the side plate of the lock box, one end of which is engaged with the trigger rod, and the other end of which is detachably engaged with the connecting rod. The lever lever, the strike plate attached to the door frame facing the front plate of the lock box when the sliding door is closed, and the back side of the strike plate, which is guided so as to be movable in the vertical direction, and the connecting rod protruding forward. A rack body that forms an engaging portion that engages with, a reduction gear group that operates the rack body, and a micromotor that is connected to the reduction gear group through an electromagnetic clutch , An electric lock for a sliding door, which is characterized by opening an elongated hole in the vertical direction so as not to interfere with a vertically moving connecting rod.