JP2005171551A - Locking mechanism of sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking mechanism easily post-installable without boring a rail for an existing sliding door. <P>SOLUTION: A lock 1 comprises a case 3 fixed to the outer surface of the rail 29 and a lock body 7. The lock body 7 comprises a cylinder 8, a rotor 9, and a locking rod 12. The lock body 7 is axially movable between an unlocking position and a locking position, energized to the locking position, and engaged with the case 3. The cylinder 8 is engaged with the case 3 so as to be axially moved and not to be rotated. The locking rod 12 connected to the rotor 9 comprises an engagement recessed part 12a and is projected to the rear of the case 3. The lock pin 13 is energized so as to be engaged with the engagement recessed part 12a of the locking rod 12 when the locking body 7 is located at the locking position and the rotor 9 is located at the lock position. A receiving plate 2 comprises an engagement hole 2a for receiving the tip of the locking rod 12 projected rearward and locking the inside sliding door 22 and the outside sliding door 21 to each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sliding door locking mechanism that can be easily retrofitted and is suitable for locking a sliding door in an open state with a required narrow width.

Conventionally, as a sliding door locking mechanism suitable for locking with a sliding door opened in a required narrow width, for example, the one described in Patent Document 1 is known. This is shown in FIG. In this locking mechanism, the outer cylinder 31 is fixed to the sliding door 22, and the cylinder 33 of the lock 32 is inserted into the outer cylinder 31 so as to be movable in the axial direction. An axial return spring 34 is inserted between the lock 32 and the outer cylinder 31. A locking rod 36 is coupled to the rotor 35 of the lock 32, and an engaging portion 35c bulging in the radial direction is formed at a part of the outer periphery of the end portion thereof. The locking rod 36 is inserted into the engagement hole 21a on the sliding door 21 at a rotation angle position around the specific axis of the locking rod 36, and is prevented from coming off from the engagement hole 21a at other rotation angle positions. While inserting the key into the lock 32 and pushing the locking rod 36 axially into the outer cylinder 31, the locking rod 36 is rotated by a predetermined angle together with the rotor 35, and the engaging portion 36 a of the locking rod 36 is moved to the other side. The sliding door 21 is engaged with the engagement hole 21a and locked.
JP 2000-204811 A

In the above conventional locking mechanism, in order to attach to an existing sliding door, there is a problem in that the punch must be drilled and the attaching operation is not easy.
Accordingly, the present invention is intended to provide a locking mechanism that can be easily retrofitted without drilling the existing sliding door.

  In the present invention, the above-described problem is solved by the following configuration. The receiving plate 2 is fixed to the inner side of any one of the upper rail 26, the middle rail 27, and the lower rail 28 of the outer sliding door 21. The locking mechanism is configured by fixing the. The lock 1 includes a case 3 fixed to the outer surface of the collar 29 and a lock body 7 accommodated in the case 3. The lock body 7 includes a cylinder 8, a rotor 9 accommodated in the cylinder 8, and a locking rod 12 coupled to the rotor 9. The lock body 7 faces the receiving plate 2 between the unlocked position where the front end side protrudes from the case 3 and the locked position where the lock rod 12 is pushed backward from the case 3 by being pushed into the case 3. It is movable in the axial direction, and is biased to the locked position and engaged with the case 3. The cylinder 8 is engaged with the case 3 so as to be axially movable and non-rotatable toward the receiving plate 2. The rotor 9 is incorporated in the cylinder 8 so that it can rotate by a predetermined angle integrally with the locking rod 12 between the locked position and the unlocked position by inserting the key 17. The locking rod 12 has an engaging recess 12 a in a part of the outer periphery of the columnar shape, and protrudes rearward of the case 3 continuously to the rotor 9. The case 3 is provided with a lock pin 13. The lock pin 13 is biased to engage with the engagement recess 12a of the lock rod 12 when the lock body 7 is in the lock position and the rotor 9 is in the lock position. The receiving plate 2 has an engagement hole 2a for receiving the distal end portion of the locking rod 12 protruding rearward and locking the inner sliding door 22 and the outer sliding door 21 to each other.

  In the present invention, the receiving plate 2 is fixed to the inner side of any one of the upper rail, the middle rail, and the lower rail 27 of the outer sliding door 21, and the outer surface of the inner sliding door 22 in the sliding door moving direction at the summit side 29. By fixing the lock 1 to the door, there is an effect that an additional locking mechanism can be configured on the existing sliding door very easily. It is not necessary to process the flange 29 of the inner sliding door 22.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a sliding door type aluminum sash to which the locking mechanism of the present invention is applied from the indoor side, FIG. 2 is a front view of the locking mechanism of the present invention, and FIG. 3 is a cutaway view of a part of the opening locking mechanism of the present invention. 4 is a cross-sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is a perspective view of the lock of the present invention, and FIG. 6 is a part of the state in which the key is removed when the lock of the present invention is unlocked. FIG. 7 is a plan view in which a part of the lock of the present invention at the time of unlocking is cut away.

  In FIG. 1, the outside sliding door 21 and the inside sliding door 22 are built in the opening 23 of a house so that a sliding is possible. The outer sliding door 21 has an upper beam 26, an intermediate beam 27, and a lower beam 28 passed between the left and right rods 24 and 25, and glass is fitted between the beams. The inner sliding door 22 has the same structure, and has ridges 29 and 30, an upper beam 31, an intermediate beam 32, and a lower beam 33, and is fitted with glass.

  The lock 1 is fixed to the ridge 29 on the summing side of the inner sliding door 22. On the other hand, a receiving plate 2 having an engagement hole 2 a that can be engaged with the lock 1 is fixed inside the middle rail 27 of the outer sliding door 21. The receiving plate 2 has a plurality of engagement holes 2a arranged at predetermined intervals in the lateral direction and a notch hole 2b disposed below each engagement hole 2a. As shown in FIG. 3, the lock 1 is configured such that the lock rod 12 is engaged with the engagement hole 2a of the receiving plate 2 and locked, and can be unlocked by key operation. The receiving plate 2 can be attached to any of the upper rail 26, the middle rail 27, and the lower rail 28 of the outer sliding door 21, and the lock 1 can be fixed according to the position.

  As shown in FIG. 2 to FIG. 4, the middle rail 27 of the outer sliding door 21 is made of a substantially flat rectangular tube-shaped aluminum mold material, and is engaged with the engagement hole 2 a of the receiving plate 2 on the indoor side wall. A hole 27a is formed. The receiving plate 2 is made of stainless steel, and is screwed onto the middle rail 27 with the engagement hole 2 a overlapped with the engagement hole 27 a of the middle rail 27. The backing plate 2 reinforces a relatively weak aluminum intermediate rail 27. The engagement hole 2a of the receiving plate 2 forms a narrow open portion with a required width that is not allowed for a person to pass through the opening 23 of the house, as shown by a phantom line in FIG. It is arranged in a relative positional relationship with the lock 1 that can be locked in a state.

  The lock 1 is fixed to the flange 29 of the inner sliding door 22. The case 3 of the lock 1 is fixed to the outer side surface 29a of the flange 29 with a screw 4 in the mounting seat 3a on one end side. The case 3 has a circular hole 3 b that receives the cylinder 8 of the lock body 7, a through hole 3 c that receives the locking rod 12, and a through hole 3 d that receives the positioning protrusion 15.

  The lock body 7 is inserted into the circular hole 3 b of the case 3. The lock body 7 includes a cylinder 8 and a rotor 9 incorporated in the cylinder 8 so as to be rotatable by 90 ° between a locked position and an unlocked position by inserting a key.

  A guide screw 10 is screwed into the cylinder 8 in the radial direction with the head protruding outward. The cylinder 8 engages the head of the guide screw 10 with the guide groove 3e of the case 3, and the unlocked position (FIG. 6) in which the front end side protrudes from the case 3 and the locked position (FIG. 6) pushed into the case 3. 3) is inserted into the circular hole 3b so as to be movable in the axial direction, and is always urged to the unlocked position by the spring 11 inserted into the circular hole 3b.

  A locking rod 12 is coupled to the rear end of the rotor 9 that protrudes rearward from the cylinder 8. The locking rod 12 has an engagement recess 12a in a part of the outer periphery of the columnar shape, penetrates the hole 3b, protrudes and retracts to the rear of the case 3, and can be engaged with and detached from the engagement hole 2a of the receiving plate 2 It is. The case 3 is provided with a lock pin 13 that can be projected and retracted radially inward of the hole 3c and is urged by a spring 14 in the protruding direction.

  When the lock body 7 is in the locked position and the rotor 9 is in the locked position, the lock pin 13 engages with the engagement recess 12a of the lock rod 12 and prevents the lock rod 12 from moving in the axial direction. To do.

  The positioning protrusion 15 is positioned below the locking rod 12 and is inserted into the through hole 3c of the case 3. The tip always protrudes rearward of the case 3 and engages with the notch hole 2b of the receiving plate 2. As shown in FIG.

  For example, as shown in FIG. 3, the cylinder 8, the rotor 9, and the locking rod 12 are integrally formed with the inner sliding door 22 opened by a required width and the positioning protrusion 15 engaged with the notch hole 2 b of the receiving plate 2. When the shaft 3 is pushed into the case 3 in the axial direction, the locking rod 12 engages with the engagement hole 2 a of the receiving plate 2. In this state, the lock pin 13 engages with the engagement recess 12a to prevent the locking rod 12 from coming off, and the space between the inner and outer sliding doors 21 and 22 is locked. When unlocking, the key 17 may be inserted into the rotor and rotated 90 °. The locking rod 12 rotates while the lock pin 13 is retracted in the radial direction, and when the lock pin 13 is disengaged from the engaging recess 12a, the entire lock body 7 is pushed out of the case 3 by the spring 11, and the locking rod 12 is It escapes from the engagement hole 2a of the receiving plate 2 (FIG. 6). If the rotor 9 is returned 90 ° from this state to the state shown in FIG. 5, the key 17 can be removed.

  The sliding door locking mechanism of the present invention can be applied, for example, as a double-locked lock of an existing sliding door, or as an open-locked lock that locks the existing sliding door in a state of opening with a required narrow width.

It is a front view from the room inner side of the sliding door type aluminum sash to which the locking mechanism of the present invention is applied. It is a front view of the locking mechanism of this invention. It is the top view which notched some open locking mechanisms of this invention. IV-IV sectional drawing in FIG. It is a perspective view of the lock of the present invention. It is the top view which notched a part of the state which pulled the key at the time of unlocking of the lock | rock of this invention. It is the top view which notched a part at the time of unlocking of the lock | rock of this invention. It is a top view of the conventional locking mechanism.

Explanation of symbols

1 lock 2 receiving plate 2 engagement hole 2b notch hole 3 case 3a mounting seat 3 circular hole 3 through hole 3 through hole 3 guide groove 4 screw 7 lock body 8 cylinder 9 rotor 10 guide screw 11 spring 12 locking rod 12a recess 13 Lock pin 14 Spring 15 Positioning protrusion 16 Spring 17 Key 21 Outer sliding door 22 Inner sliding door 23 Opening 26 Upper rail 27 Middle rail 28 Lower rail 29 框

Claims (3)

On the outer surface in the sliding door moving direction of the receiving plate fixed to the inside of any of the upper, middle and lower rails of the outer sliding door, and the basket on the summing side of the inner sliding door to be engaged with this receiving plate A fixed lock,
The lock includes a case fixed to the heel on the calling side of the inner sliding door, and a lock body housed in the case,
The lock body includes a cylinder, a rotor accommodated in the cylinder, and a lock rod coupled to the rotor, an unlocking position in which a front end side protrudes from the case, and a lock that is pushed into the case and locked. Between the locking position where the rod protrudes backward from the case, it is movable in the axial direction facing the receiving plate, and is urged to the locking position and engaged with the case,
The cylinder of the lock body is engaged with the case so as to be axially movable and non-rotatable with the axis line toward the receiving plate,
The rotor of the lock body is incorporated in the cylinder so that it can rotate by a predetermined angle integrally with the locking rod between a locked position and an unlocked position by inserting a key,
The locking rod of the lock body has an engagement recess in a part of the outer periphery of the columnar shape, and protrudes rearward of the case continuously from the rotor.
The case is provided with a lock pin biased to engage with the engagement recess of the lock rod when the lock body is in the lock position and the rotor is in the lock position,
The sliding plate locking mechanism according to claim 1, wherein the receiving plate has an engagement hole for receiving the distal end portion of the locking rod protruding rearward and locking the inner sliding door and the outer sliding door.   2. The sliding door locking mechanism according to claim 1, wherein the lock and the receiving plate are arranged in a mutual positional relationship that can be locked in a state where the sliding door is opened in a predetermined narrow width. The backing plate has a plurality of engaging holes arranged at predetermined intervals in the moving direction of the sliding door so that the sliding door can be selectively locked at a plurality of different open positions. A plurality of notch holes corresponding to the holes;
The case is provided with a positioning protrusion that protrudes from the side surface facing the receiving plate and can fall into the notch hole and is elastically biased in the protruding direction.
The positioning protrusion is provided at a relative position where the locking rod falls into each notch hole at a position facing each engagement hole,
The sliding door locking mechanism according to claim 1, wherein the sliding door can be temporarily fixed at a plurality of different selective opening positions by engagement between the positioning protrusion and the notch hole.

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