JPH0586765A - Door locking mechanism - Google Patents

Abstract

PURPOSE:To facilitate operation by installing a sublock bolt which advances into a sublock hole in interlocking with a dead bolt and retreats from the sublock hole in the state where the head part is advanced outside a door when a locking knob is operated in the lock releasing direction, retreat means, and a sublock plate. CONSTITUTION:When a knob 62 for locking is turned in the counterclockwise direction, a sublock bolt 15 and a dead bolt 16 for inside lock are advanced into a sublock hole 83 and a lock hole 82 on a door peripheral wall 79, and a door 75 is fixed on the peripheral wall 79. When the knob 62 is turned in the clockwise direction. the dead bolt 16 perfectly retreats from the lock hole 82. While, the sublock bolt 15 retreats from the sublock hole 82, and then stops in the state where a bolt head part 15c is projected from the bolt advance/ retreat hole of a door frame 66, and an opening-enabled state is kept until a door 75 is prescribed by a sublock plate 73. When a sublock releasing knob 76 is operated, the door 75 is kept in a perfect opening-enabled state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock mechanism for moving a dead bolt on a door side into and out of a lock hole on a wall side by operating a lock knob in a lock direction and a lock release direction.

[0002]

2. Description of the Related Art A door chain, which is provided for the purpose of preventing entry when opening a door and checking a visitor, is fixed on the door side and can slide a slide bolt at one end of the chain. It is composed of a door plate to be engaged and a jam plate fixed to the door frame side and fixing the other end of the chain. Generally, this chain has a short length, and if you open the door to identify the visitor and engage the slide bolt with the door plate, even if the visitor who does not want to intrude opens the door, Is not opened beyond the specified angle.

However, although the conventional door chain has a relatively simple structure, it is troublesome to hang the slide bolt on and off the door plate, and forget to hang it. It was not fully utilized.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above drawbacks of the conventional door chain, and an object of the present invention is to provide a door lock mechanism which is extremely easy to operate.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention for achieving the above object is, in a door lock mechanism for advancing and retracting a door side dead bolt into a wall side lock hole by operating a locking knob in a locking direction and an unlocking direction, Sub-block hole provided on the wall side separately from the lock hole; when the locking knob is operated in the locking direction, it interlocks with the dead bolt and advances into the sub-block hole, and after this operation, the locking knob is opened. When operated in the unlocking direction, a sublock bolt that retracts from the above subblock hole with its head advanced to the outside of the door; rotatably supported on the above wall side, and reciprocates at its free end A sub-block plate having a through hole for penetrating the sub-block bolt; and an operation in the unlocking direction of the locking knob causes the sub-block bolt to move. Characterized in that it has a sub-block bolt retreating means for retreating the sub-block bolt from the through-hole by its operation when the sub-block retracts from the sub-block hole and its head is fitted into the through-hole of the sub-block plate. There is.

According to the above construction, by operating the lock knob in the locking direction, the deadlock bolt and the sublock bolt are advanced into the lock hole and the sublock hole so that the main lock and the door chain function at the same time. It is possible to easily create the condition. By operating the lock knob in the unlocking direction, the door chain can be hung and the main lock can be released, and by operating the sub lock bolt retracting means from this state, the door chain is, so to speak. It can be removed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to illustrated embodiments. The door lock mechanism 11 has a housing case 12 to be fixed to the door frame 66. On the inner surface of the housing case 12, there are provided a slide support protrusion 19, rotation support protrusions 22, 23, 26, 27, 28, 29 and a knob opening 30. At one side of the housing case 12, a vertically long deadbolt advancing / retreating opening 31 and screw holes 32 formed above and below the deadbolt advancing / retreating opening 31.
And a sub block bolt advancing / retreating opening 25 is formed on the upper side. The sub block bolt advancing / retreating opening 25 has a sub block bolt 15 that is moved forward and backward with respect to a sub block hole 83 (FIG. 6) formed in the door peripheral wall 79.
Are slidably fitted together. This sub lock bolt 15
Has an engagement step portion 15a in the lower portion and a notch 15b and a bolt head portion 15c in the upper portion. A step portion 15d is formed above the engagement step portion 15a.
The bolt restoring spring 33, which is fitted to the step portion 15d and abuts against the stepped portion 15d from above, has an upper end portion thereof which is a retractable opening 2 of the sub block bolt.
The sub block bolt 15 is brought into contact with the inner surface of the housing 5, and the sub lock bolt 15 is urged inward of the housing case 12.

A small diameter portion of the locking bar 21 is slidably fitted into the sliding support projection 19, and one end portion of the locking bar 21 is fitted to a step portion 21a of the small diameter portion and the large diameter portion. The combined return spring 34 is contracted with the other end abutting against the slide support projection 19. The tip portion of the locking bar 21 can be engaged with the engagement step portion 15a, and at the time of this engagement, the sub lock bolt 15 is prevented from retracting into the housing case 12.

The slide support hole 16a of the inner lock dead bolt 16 is slidably fitted into the rotation support protrusion 27,
The sliding support hole 17a of the outer locking dead bolt 17 is slidably fitted into the rotation supporting protrusion 28. The inner and outer lock dead bolts 16 and 17 are advanced and retracted with respect to lock holes 82 (FIG. 6) provided in the door peripheral wall 79. In addition, the rotation support shaft 5 that is inserted into the insertion hole 16c
5, the rotary plate 53 is rotatably supported, the support plate 57 is pivotally supported via a rotary support shaft 60 that is inserted into the insertion hole 16d, and the dead bolt operating member is provided in the engagement notch 16b. The engaging convex portion 43a of 43 is slidably fitted. Reference numeral 59 is a spring for returning the support plate 57.

Key insertion hole 4 of dead bolt operating member 43
A lock knob 62 that is inserted into the through hole 63 of the housing plate 13 is engaged with 3b. The rotation support shaft 52 is rotatably supported by the rotation support shaft 52 inserted through the insertion hole 17c, and the rotation support shaft 4 is inserted through the insertion hole 17d.
The support plate 47 and the spring 50 are axially supported by 9, and the engaging protrusion 45a of the deadbolt operating member 45 is slidably fitted into the engaging notch 17b from the back surface. The key insertion hole 45b of the deadbolt operation member 45 is exposed from a key hole (not shown) formed in the door 75 corresponding to this, and a key is inserted into the key hole from the outside of the door 75,
It is turned by turning operation. Return spring 4
6, both end portions of which are the rotation support protrusion 28 and the engaging protrusion 17e.
To engage the outer lock dead bolt 17 in the returning direction. Similarly, the return spring 56 also urges the inner lock dead bolt 16 in the return direction.

A support member 39 is rotatably fitted together with the spring 41 on the rotation support protrusion 26, and a support member 40 is rotatably fitted together with the spring 42 on the rotation support protrusion 29. .. A rotation member 35, which pivotally supports a push-up plate 36 by a rotation support shaft 37, is pivotally attached to the insertion hole 35b on the rotation support protrusion 23. Rotation support protrusion 2
The slide support hole 36a of the push-up plate 36 is slidably fitted into the slide member 2. Engaging protrusion 35c of the rotating member 35
Is slidably fitted into the engagement notch 16b of the inner locking dead bolt 16. In such a state, the housing plate 13 is joined to the housing case 12 from the rear surface thereof so that the support portion 65 corresponds to the sub block bolt advancing / retracting opening 25, and is fixed by the fixing screw 61.

The door lock mechanism 11 in this state is used for the door 7
5 is stored in a storage portion (not shown) formed in advance, and the fixing screw 70 is inserted into the screw hole 72 and screwed into the door body to be fixed to the door frame 66 integrated with the door 75. .. This fixing is performed by the fixing screw 70 inserted in the screw hole 69.
Corresponding to the screw hole 69, the housing case 12
It is carried out by screwing it into the screw hole 32 formed in 1. The inner lock deadbolt 16 and the outer lock deadbolt 17 are capable of penetrating the deadbolt advancing / retreating opening 31 and the opening 67 and advancing outward. Above the door frame 66, a bolt advancing / retreating hole 71 corresponding to the sub block bolt 15 advanced from the sub block bolt advancing / retreating opening 25 is formed.

Further, the lock knob 62 is inserted through the through hole 63, the knob opening 30 is penetrated, and a door knob (not shown) is attached from the front side of the housing case 12. Further, as shown in FIG. 5 and FIG. 6, on the door peripheral wall 79 side, a sub block plate 73 having an engaging hole 73a through which the bolt head portion 15c of the sub block bolt 15 can be inserted.
However, the rotation support hole 73b is rotatably supported by the rotation support shaft 80. Door lock mechanism 11
Is assembled in the door 75 in the assembled state as described above, and at this time, the door 7 is made to correspond to the locking bar 21.
A sub-block release knob 76 is fitted into the opening 77 formed in 5, and the sub-block release knob 76 is attached to the locking bar 21.
Connected to.

The present door lock mechanism 11 having such a structure
Is used as follows. When the locking knob 62 is not locked, the door lock mechanism 11 is in the state shown in FIG. 2, and the entire door is as shown in FIG. That is, the sub lock bolt 15 is retracted from both the sub block hole 83 of the door peripheral wall 79 and the through hole 73a of the sub block plate 73, and the inner lock dead bolt 16 and the outer lock dead bolt 17 are disposed inside the housing case 12. The door 75 is positioned with respect to the door surrounding wall 79 only by the latch bolt (not shown).

When the lock knob 62 is rotated counterclockwise in this state, the sub lock bolt 15 and the inner lock dead bolt 16 advance into the sub lock hole 83 and the lock hole 82 of the door peripheral wall 79. (FIG. 3), whereby the door 75 is fixed to the door surrounding wall 79 as shown in FIG. When the sub lock bolt 15 is advanced, it is engaged by the locking bar 21 that is biased toward the engagement step 15a by the return spring 34.
It becomes impossible to evacuate regardless of.

In this state, when the door 75 is opened by a visitor or the like, if the lock knob 62 is rotated in the unlocking direction (clockwise direction in the figure), as shown in FIG. The bolt 16 has a lock hole 82
Although the sub block bolt 15 retreats from the sub block hole 82 to the housing case 12 completely, the sub block bolt 15 retreats from the sub block hole 82.
This bolt head 15c stops when 5c is projected.
Is fitted into the engaging hole 73a, and the sub block plate 73
It is made possible to open with. This state is, so to speak, a state in which a conventional door chain is hung (Fig. 8). Thereby, the door 75 can be opened until it is regulated by the sub lock plate 73.

Further, after confirming the visitor, when passing through the house, the sub-block release knob 76 is manually operated by directing it to the right side of the drawing. Then, the locking bar 21 moves in the direction of releasing the engagement step 15a against the return spring 34, so that the sub lock bolt 15 is completely retracted inward of the housing case 12 by the bolt restoring spring 33. The sub block plate 73 is released (FIGS. 5 and 9). As a result, the door 75 can be completely opened.

On the other hand, when the door 75 is locked from the outside of the door 75 at the time of going out, the dead bolt operating member 45 is rotated clockwise by rotating the key inserted through the key hole. Thus, the outer locking dead bolt 17 is advanced into the lock hole 82 from the housing case 12 by the engagement convex portion 45a. In this case, neither the inner lock dead bolt 16 nor the sub lock bolt 15 is advanced. When the door 75 locked in this way is unlocked, the reverse operation is performed. That is, rotate the key inserted from the keyhole in the opposite direction to the above,
The dead bolt operating member 45 is rotated counterclockwise in FIG. 1 to retract the outer locking dead bolt 17 into the housing case 12. As a result, the door 75 can be opened.

[0019]

As described above, according to the present invention, by simply operating the lock knob in the lock direction, the deadlock bolt and the sublock bolt are advanced into the lock hole and the sublock hole. It is possible to have the lock and the door chain functioning at the same time.
Then, by operating the lock knob in the unlocking direction, the conventional door chain can be easily hung, and by further operating the lock block bolt retracting means from this state, the door chain is removed. Can be Therefore, the door chain function, which has not been used sufficiently due to its troublesomeness in the past, can be used easily and surely by simplifying the operation.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a door lock mechanism according to the present invention.

FIG. 2 is a diagram showing a state when the door lock mechanism is unlocked.

FIG. 3 is a diagram showing a state when the door lock mechanism is locked.

FIG. 4 is a view showing a state in which only a sub lock of the door lock mechanism is locked.

5 is a diagram showing a state in which the sublock is unlocked in FIG. 4;

FIG. 6 is a front view of the entire door shown in correspondence with FIG.

FIG. 7 is a front view of the entire door shown corresponding to FIG.

FIG. 8 is a front view of the entire door shown in correspondence with FIG.

FIG. 9 is a front view of the entire door shown corresponding to FIG.

[Explanation of symbols]

11 Door Lock Mechanism 12 Housing Case 13 Housing Plate 15 Sub Lock Bolt 15a Engagement Step 15b Notch 15c Bolt Head 16 Inner Lock Dead Bolt 16a Sliding Support Hole 16b Engage Notch 16c 16d Insert Hole 17 Outer Lock Dead Bolt 17b Engagement notch 17c 17d Insertion hole 17e Engagement convex part 19 Sliding support protrusion 21 Locking bar (subtract bolt retracting means) 22 23 Rotation support protrusion 25 Subblock bolt advancing / retreating opening 26 27 28 29 Rotation support protrusion 30 Knob opening 31 Dead bolt advancing / retreating opening 32 Screw hole 33 Bolt restoring spring 34 Return spring 35 Rotating member 35a 35b Insertion hole 35c Engagement convex portion 36 Push-up plate 36a Sliding support hole 37 Rotating support shaft 39 40 Supporting member 41 42 Spring 43 Deadbol G Operation member 43a Engagement projection 43b Key insertion hole 45 Dead bolt operation member 45a Engagement projection 45b Key insertion hole 46 Return spring 47 Support plate 49 Rotation support shaft 50 Spring 51 53 Rotation plate 52 Rotation support shaft 55 rotation support shaft 56 return spring 57 support plate 59 spring 60 rotation support shaft 61 fixing screw 62 locking knob 63 through hole 65 support portion 66 door frame 67 77 opening 69 screw hole 70 fixing screw 71 bolt advancing / retracting hole 72 screw Hole 73 Sublock plate 73a Engagement hole 73b Rotation support hole 75 Door 76 Sublock release knob (subtraction bolt retracting means) 79 Door peripheral wall 80 Rotation support shaft 82 Lock hole 83 Sublock hole

Claims (1)

[Claims] 1. A door lock mechanism for moving a dead bolt on a door side into and out of a lock hole on a wall side by operating a lock knob in a lock direction and a lock release direction, wherein the door lock mechanism is provided on the wall side separately from the lock hole. Sub block hole;
When the lock knob is operated in the lock direction, the lock bolt is interlocked with the dead bolt to advance into the sub-block hole, and when the lock knob is operated in the lock release direction after this operation, the head is placed outside the door. A sub-block bolt that retracts from the sub-block hole in the advanced state; a sub-block plate that is rotatably supported on the wall side and that has a through-hole at its free end that allows the sub-block bolt that advances and retracts to pass therethrough; and When the lock knob is operated in the unlocking direction, the sub lock bolt is retracted from the sub lock hole and its head is fitted into the through hole of the sub block plate. A door lock mechanism comprising: a sub-block bolt retracting means for retracting from the through hole.