JP2598597Y2 - Locking device for sliding door - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a sliding door comprising an inner door and an outer door, wherein an inner lock and an outer lock are attached to the mating portion of the sliding door so as to face each other. The present invention relates to a locking device for a sliding door in which the locking operation is performed by an outside operation member such as a cylinder lock.

[0002]

2. Description of the Related Art As a conventional locking device for a sliding door of this kind, Japanese Utility Model Application Laid-Open No. 61-197165 and Japanese Utility Model Application Publication No. 5
There is an apparatus described in JP-A-6-15338.

The former uses a sickle-type locking rod, so the locking rod has a wide range of engagement, but the range of connection between the outer operating member and the inner operating member is extremely narrow. The mounting position of the lock had to be accurate, and it was necessary to adjust the position one by one during the work of mounting the lock.

Since the latter uses a crescent sickle-type locking rod, it has the advantage that the doors inside and outside can be attracted, and the doors can be locked tightly, but the range of engagement with the metal fittings is extremely narrow. Since it is necessary to operate the cylinder lock provided on the inner lock from the outside, the mounting position of the inner lock and the outer lock must be accurate as in the former,
It was necessary to align them one by one.

[0005] Therefore, at least one of the doors to which the inner and outer locks are attached is formed with a large mounting hole for the lock so that the mounting position can be adjusted. Is shifted up and down in the mounting hole to determine the mounting position, and is fixed by screws or the like.

As described above, in the conventional apparatus, it is not only necessary to adjust the position of the lock at first, but also because the mounting hole is formed to be large, the mounting screw is opened during use by the impact of opening and closing the door. May loosen and the lock body may shift,
As a result, the locking / unlocking operation cannot be performed, and the locking rod does not engage with the metal fitting, so that there is a problem that adjustment is required each time.

[0007]

DISCLOSURE OF THE INVENTION A locking device for a sliding door according to the present invention is provided such that an inner lock and an outer lock are attached to a mating portion of a sliding door composed of an inner door and an outer door so as to face each other, and a knob or the like is provided from the inside. The locking rod rotates and protrudes from the inner operation member and the outer operation member such as a cylinder lock from the outside, and is inserted into the lock case through the locking rod fitting hole formed in the front plate of the opposing lock, and the locking plate is inserted into the lock case. A locking device for a sliding door to be engaged with a back surface, wherein the size of the locking rod fitting hole is set to a size that can be tolerated even when the locking rod fitting position is shifted, and the inner operating member and the outer operating member are connected. The connecting range of the operating mechanism for transmitting the operating force of one operating member to the other operating member is increased so as to enable the connecting even if the opposing positions of the inner operating member and the outer operating member are shifted. Each one of them Among them, form a mounting hole tablet case of the outer tablet is fitted without looseness, it is characterized in that the attachment fitted to the corresponding lock case to the mounting hole.

[0008]

DISCLOSURE OF THE INVENTION A locking device for a sliding door according to the present invention is provided such that an inner lock and an outer lock are attached to a mating portion of a sliding door composed of an inner door and an outer door so as to face each other, and a knob or the like is provided from the inside. A locking device for a sliding door in which a locking rod rotates and protrudes from the outside by operation of an outside operating member such as a cylinder lock and engages with a front plate of an opposing lock. Is provided with a locking rod that engages with the front plate of the opposing lock in a wide range, and connects the inner operating member and the outer operating member to transmit the operating force of one operating member to the other operating member. The connecting portion is provided so as to engage in a wide range, and the inner door and the outer door are formed with mounting holes in which the corresponding inner and outer lock cases are fitted without looseness, respectively. Take the lock cases corresponding to the holes It is characterized in that the digits.

[0009]

When the inner operating member such as a knob is operated from the indoor side when the door is closed, and the outer operating member such as a cylinder lock is operated from the outdoor side, the locking rod rotates while protruding horizontally, and the locking rod rotates in front of the opposing lock. The engagement end of the locking rod engages with the back surface of the front plate by fitting into the lock case through the hole of the plate.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional side view when unlocking a state in which an inner lock and an outer lock constituting the device of the present invention are attached to a mating portion of an inner door A and an outer door B, respectively, where 1 is an inner lock. The lock case is fitted and attached to the mounting hole A 'formed in the mating portion of the inner door A without a gap, and a lock case constituting an outer lock described later is also formed in the mating portion of the outer door B. It is fitted and mounted in the mounting hole B 'without any gap. Here, the lock case includes not only the case body but also a knob attached to the lock case, a mounting plate for operating members such as a cylinder lock, etc., and either the case body or the mounting plate is fitted and attached without any gap. It is good. Reference numeral 2 denotes an inner slider which is guided by the front plate 11 and the rear plate 12 of the lock case 1 and slides up and down. A shaft 21 for operating a knob for operating the slider is integrally fixed. Reference numeral 3 denotes a knob including a slide plate 31 and a grip portion 32, and a storage case 33 with a flange that acts as an attachment plate when the lock case 1 is attached to the mating portion of the inside door A.
The slider is fitted so as to be able to slide up and down, and a concave portion formed in the grip portion 32 is fitted and attached to the shaft 21 of the slider. Reference numeral 4 denotes a flat plate portion 41 and a tapered engagement rim 42 which functions to draw a sliding door when fitted into a locking rod fitting hole of a front plate of an outer lock which will be described later and which is opposed to the flat plate portion when locking. A locking rod of a crescent sickle type having an engagement end 43 formed at an end thereof, and a shaft 44 integrally fixed thereto is fitted in a horizontally elongated hole 13 formed in a side plate of the lock case 1. The shaft 44 is fitted in the upper and lower inclined holes 22 and 23 formed in the slider 2 and the vertical hole 24 connected thereto. The locking rod 4 has stepped portions 45 and 46 formed by cutting out a part of the side opposite to the engaging edge 42 and pressing the pin 25 fixed to the slider 2.

Reference numeral 5 denotes a lock case which constitutes an outer lock. The front plate 51 is formed with a locking rod fitting hole 52 as shown in FIG. 6 in which the flat plate portion 41 of the locking rod 4 and the engaging edge 42 are fitted. ing. Reference numeral 6 denotes an outer slider which is guided by the front plate 51 and the rear plate 53 of the lock case 5 and slides up and down. The outer slider 6 is attached to the plug of the cylinder lock 7 attached to the rear plate 53 with a play angle of 90 degrees. The rack 61 in which the pinion 71 to be engaged is formed. Reference numerals 8A and 8B denote operating rods constituting an operating mechanism 8 for vertically sliding the inner slider 2 by vertically sliding the outer slider 6, and are symmetrically pivotally supported on the side plate of the lock case 5 with the same shaft 81. The pins 82, 83 fixed to the respective operating rods 8A, 8B are pushed by upper and lower steps 62, 63 formed on the slider 6, and the operating rod 8A moves counterclockwise and the operating rod 8B moves clockwise. It is configured to alternately protrude from the lock case front plate 51 so that the distal ends of the operating rods 8A and 8B push the passive plate 26 fixed to the slider 2 of the inner lock to move the slider 2 up and down. The operating rods 8A and 8B
Are configured so that their rotation angles are each 90 degrees or more. Even if the mounting position of the lock case is slightly shifted, the distal ends of the operating rods 8A and 8B, which are the connecting portions, are connected to the passive plate 26 of the slider 2. The passive plate 26 can be reliably engaged and pushed.

In the drawing, reference numeral 9 denotes a trigger bolt which is urged by a spring so as to always protrude from the lock case front plate 11, and the rear end of which normally abuts against the inclined step portion 27 of the slider 2 at the raised position. When the slider 2 is to be protruded due to the descent of the slider 2, if there is an outer lock at the opposing position, the outer lock comes into contact with the front plate of the lock and the retracted position is maintained, so that the slider 2 descends as it is. However, when there is nothing to prevent the projection, that is, when the door is open, the slider 28 protrudes and the step 28 of the descending slider 2 comes into contact with the rear end of the trigger bolt 9 and further. The descent is prevented. That is, the trigger bolt 9
When the door is open, a knob is operated to disable the locking operation. Reference numeral 10 denotes a cylindrical guard member for preventing the slider 2 from being operated from the gap of the locking door, and a pin 101 fixed to a part of the member is fitted into an inclined hole 29 formed in the slider 2. The pin 101 is guided by the inclined hole 29 and protrudes when the slider 2 is lowered, that is, when the slider 2 is locked, and hides a portion where the slider 2 can be operated.

The operation of the device according to the present invention will be described based on the above embodiment. In the unlocked state in the closed state of FIG. 1, the slider 2 is at the raised position, and the locking rod 4 is retracted into the lock case 1.

When the locking operation is performed from the indoor side, when the grip portion 32 of the knob 3 is grasped and pushed down, the slider 2 integrated therewith is lowered. At this time, the step portion 45 of the locking rod 4 is pushed by the pin 25 of the slider 2 and the locking rod 4 rotates clockwise around the shaft 44, but at the same time, the shaft 44 is
The locking rod 4 rotates while moving forward, and its engaging end 43 draws an elliptical locus while the front plate 11 rotates.
Projecting from The locking rod 4 projecting from the rotation penetrates into the lock case 5 from the locking rod insertion hole 52 of the front plate 51 of the outer lock with the flat plate portion 41 and the engaging edge 42 facing each other. The edge is pressed by the tapered portion of the engaging edge 42 to draw the door, the engaging end 43 comes into contact with the back surface of the front plate 51, and the shaft 44 is guided by the inclined hole 22 by further descending of the slider 2 and retreats. Then, the front plate 51 is attracted, that is, the door is pulled, and the locked state shown in FIG. 2 is obtained. When unlocking, push knob 3 up and push pin 2 of slider 2
Since 5 pushes the step 46 of the locking rod 4, the locking rod 4 rotates counterclockwise and retreats to the unlocked state of FIG.

When the locking operation is performed from the outdoor side, when a double key is inserted into the cylinder lock 7 and the plug is rotated 180 degrees clockwise, the pinion 71 integrated therewith is rotated, and the rack 61 meshing with this pinion is raised. Since the slider 6 integrated therewith rises and the step portion 63 pushes up the pin 82 fixed to the operating rod 8A, the operating rod 8A rotates and projects clockwise about the shaft 81 as a fulcrum. Since the second passive plate 25 is pushed down as shown by the two-dot chain line in FIG. 2 and the slider 2 is lowered, the locking rod 4 rotates and protrudes to the locked state shown in FIG. 2 as in the case of the above-described operation from the indoor side. Since the pin 82 of the operating rod 8A is fitted into the long hole 63a continuous with the step 63 of the slider 2 during its rotation, the pin 82 is pushed by the edge of the long hole 63a during the unlocking operation, that is, when the slider 2 descends. To return to the original state.
When unlocking, when the plug of the cylinder lock is rotated counterclockwise, the slider 6 is lowered, and the step 62 pushes down the pin 83 of the operating rod 8B.
1, the tip thereof pushes up the passive plate 25 of the slider 2 as shown by a two-dot chain line in FIG. 1 and raises the slider 2, so that the locking rod 4 rotates and recedes in FIG. It is unlocked. Pin 83 of operating rod 8B
Is fitted into the elongated hole 62a that is continuous with the step portion 62 of the slider 2 during its rotation, so that it is pushed by the edge of the elongated hole 62a during the locking operation, that is, when the slider 2 is raised, and returns to the original state. . Thereafter, the locking and unlocking operation is repeated by picking from inside or outside the room or operating the cylinder lock.

Although the knob 3 is of a vertical sliding type integrally formed with the slider 2 in the drawing, a rotary type of vertically sliding the slider 2 using a rack and a pinion may be used. By changing the slider, the locking rod 4 can be replaced with the outer lock and the operating mechanism 8 can be replaced with the inner lock, and the operating rods 8A and 8B can be returned without using the long holes 62a and 63a. What is necessary is just to provide a return coil spring on the shaft 61.

The rotation of the locking rod may be achieved by using a conventionally known rotation mechanism of a combination of a worm gear and a pinion, and rotating and horizontally retreating by operating a knob or cylinder lock while projecting horizontally. It is.

[0018]

According to the locking device for a sliding door according to the present invention, when locking, the engaging end of the locking rod is engaged with a part of the back surface of the front plate of the opposing lock to lock the locking rod. Since the engagement range is increased and the engagement range of the connecting portion of the operating mechanism for transmitting the operating force of the inner and outer operating members is increased, the locking rod can be slightly shifted vertically even if the mounting position of the lock is slightly shifted. Can securely engage the front plate of the lock to maintain a stable locked state, and can reliably transmit the operating force of one operating member to the other operating member. It is not necessary to perform adjustment work for installation, and it is not necessary to form a large mounting hole for the lock in the door, so simply insert the lock into the cutout of the specified size and screw it in The lock can be easily attached with Since no displaced to need only tighten the screws loose, it is possible to increase the efficiency of the mounting operation, as it makes it unnecessary to adjust during use, a practical effect considerable.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view when unlocking a state in which an inner lock and an outer lock constituting a device of the present invention are respectively attached to a joining portion of a sliding door.

FIG. 2 is a longitudinal sectional side view of the same device at the time of locking. .

FIG. 3 is a perspective plan view when the inner lock is unlocked.

FIG. 4 is a plan perspective view when the inner lock is locked.

FIG. 5 is a rear view of the inner lock.

FIG. 6 is a front view of the outer lock.

FIG. 7 is a rear perspective view of the outer lock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner lock case 2 Inner slider 3 Knob 4 Locking rod 5 Outer lock case 6 Slider 7 Cylinder lock 8 Operating mechanism

Claims (3)

(57) [Scope of request for utility model registration] 1. An inner lock and an outer lock are attached to a mating portion of a sliding door composed of an inner door and an outer door so as to face each other. The operation of the outer operation member causes the locking rod to rotate and protrude, and is inserted into the lock case through the locking rod insertion hole formed in the front plate of the opposing lock, and is a locking device for a sliding door that engages with the back surface of the front plate. The size of the locking rod fitting hole is set to a size that can be tolerated even if the locking rod fitting position is shifted, and the operating force of one operating member is connected to the other operating member by connecting the inner operating member and the outer operating member. The connecting range of the operating mechanism transmitting to the member is increased so that the connecting position can be connected even if the opposing positions of the inner operating member and the outer operating member are shifted, and the inner and outer locks respectively correspond to the inner door and the outer door joining portion. Lock case fits loosely A lock device for a sliding door, wherein a mounting case is formed, and a lock case corresponding to each of the mounting holes is fitted and mounted. 2. The lock device for a sliding door according to claim 1, wherein the lock member is rotated while projecting horizontally by an operation of an inner operation member or an outer operation member, and is engaged with the back surface of the front plate of the opposing lock. And a locking rod which retreats horizontally after engagement is provided on the inner lock or the outer lock.
Locking device for sliding door as described. 3. The sliding door locking device according to claim 1, wherein the inner lock has an inner slider that slides up and down by a knob operation, and the outer lock has an outer slider that slides up and down by a cylinder lock operation. Each provided, one of the inner lock or the outer lock, rotating while horizontally projecting in conjunction with the vertical sliding of the inner or outer slider, has an engaging end to engage the back surface of the front plate of the opposing lock, Further, a locking rod that retreats horizontally after engagement is provided, and an operating mechanism is provided for either the outer lock or the inner lock to vertically slide the opposing lock slider in conjunction with the vertical slide of the outer or inner slider. The locking device for a sliding door according to claim 1, wherein: