JPH0738507U - Door lock with trigger - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a door lock with a trigger that can operate the trigger only when the door is closed and can prevent malfunctions at other times. A protrusion 24 is provided at a position above the fitting hole 22 in the receiving metal fitting 21, and the protrusion 24 retracts the trigger member 3 in a state where the lock bolt 2 is fitted in the fitting hole 22, and the lock bolt by the fastening device 4 is provided. Try to release the lock state of 2. The protrusion 24 is freely retractable by the coil spring 27, and when it collides with the lock box 1, the protrusion 24 is retracted into the inside of the receiving metal fitting 21 to reduce the impact.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door lock with a trigger that switches between a locked state and a unlocked state of a lock bolt and a door by the movement of a trigger member, and particularly to a structure for eliminating a malfunction of unlocking by a trigger.

[0002]

[Prior art]

 A typical example of this type of door lock with a trigger is a lemon lock that uses a lemon lock.

As shown in FIG. 3 and FIG. 6, this Glemon lock has a lock bolt 2 protruding and retracted from the surface of a lock box 1 attached to a door A, and a lock bolt 2 extending in the same direction as the lock bolt. A trigger member 3 for advancing and retreating is provided, and a lashing device 4 that operates in conjunction with the movement of the trigger member 3 is incorporated inside the lock box 1.

In this securing device 4, a rear end of the lock bolt 2 is connected to an intermediate portion of a cam 6 having a handle mounting hole 5, and operating arms 7 and 8 are connected to both ends of the cam 6, respectively. Fixed rods 9 and 10 protruding and retracted from the door A in the vertical direction are connected to the respective operating arms 7 and 8. Further, the notch 11 formed on one of the actuating arms 7 is engaged with the stopper 12 provided on the trigger member 3, and the trigger member 3 is always projected by the coil spring 13 incorporated in the back portion of the trigger member 3. The stopper 12 and the bottom surface of the notch 11 are brought into contact with each other by being urged in the direction.

In the Gremon tablet having the above-described structure, when the trigger member 3 projects from the lock box 1 as shown in FIG. 3, the stopper 12 and the notch 11 engage with each other to stop the movement of the operating arm 7 and to fix the lock. The device 4 is locked. Therefore, the cam 6 cannot be rotated by the handle, and the lock bolt 2 and the fixing rods 9 and 10 cannot be moved.

On the other hand, as shown in FIGS. 4 and 5, when the door A is rotated in the closing direction and the surface of the lock box 1 is rotated to a position facing the receiving metal fitting 21 attached to the door frame B, the trigger member is moved. 3 comes in contact with the surface of the receiving metal fitting 21 and retracts, the engagement between the stopper 12 and the notch 11 is released, and the securing device is unlocked. Therefore, when the cam 6 is rotated by the operation of the handle as shown in FIG. 4, the lock bolt 2 protrudes and is fitted into the fitting hole 22 of the receiving metal fitting 21, and the fixing rods 9 and 10 are vertically moved from the door A. The door A is fixed in a secured state by projecting into the engaging holes 14 and 15 provided in the door frame B.

[0007]

[Problems to be solved by the device]

 However, in the above-mentioned conventional gremone lock, when the trigger member 3 comes into contact with the receiving metal fitting 21, the trigger member 3 retracts and the locking device 4 is unlocked, so that the door A is completely removed in FIG. When the handle is rotated within the range from a to b where the lock is not completely tightened, the lock bolt 2 and the fixing rods 9 and 10 project from the door A, and when the door A is rotated in that state, the fixing rod that remains protruding There was a problem that 9 and 10 and the lock bolt 2 rub strongly against the floor surface and the door frame B and damage the surfaces thereof.

Such a defect is set so that the stopper 12 of the trigger member 3 and the notch 11 are disengaged at a position where the door is completely closed, that is, a position where the lock bolt 2 and the fitting hole 22 are fitted. However, the gap X formed between the lock box 1 and the surface of the receiving metal fitting 21 is about 2 to 3 mm when the door is actually attached, and the gap between the stopper 12 and the stopper 12 is within this small gap. Adjusting the retreat amount of the trigger member 3 so that the notch 11 engages and disengages is an extremely difficult task, which is practically impossible.

In view of the above, the present invention solves the above-mentioned problems and enables the locking device to be unlocked only when the door is completely closed, and does not require adjustment work for the amount of advance / retreat of the trigger member. The purpose is to provide a door lock.

[0010]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a lock box that can be retracted and retracted on the surface of a lock box, and a trigger member that moves back and forth in the direction in which the lock bolt protrudes and retracts. A locking device that locks and unlocks the lock bolt and door in tandem with movement is incorporated, and a trigger is provided at the position where the lock bolt is fitted into the fitting hole in the receiving metal fitting that has the fitting hole for the lock bolt. A protrusion is provided so as to contact the member, and the locking device is set to be in the unlocked state by retracting the trigger member due to contact with the protrusion.

A second means of the present invention is that an elastic member is incorporated in the back portion of the projection so that the projection is recessed inside the receiving metal when the lock box and the projection collide with each other.

[0012]

[Action]

 In the above structure, the amount of retraction of the trigger member that switches the securing device between the locked state and the unlocked state is determined by the amount of contact with the protrusion, so the height of the protrusion is adjusted to a size that is easy to adjust. By setting with, the trigger member can be retracted by the required amount at the position where the door is completely closed, and the locking device can be reliably unlocked.

In the above structure, if the projection collides strongly with the surface of the lock box, the lock box or the like is damaged, but if the second means of the present invention is adopted, the projection collides with the lock box. At this time, the above-mentioned damage can be prevented because the shock is absorbed by sinking inside the receiving device.

[0014]

【Example】

 FIG. 1 is a sectional view showing a door lock of the embodiment, and FIG. 2 shows a receiving metal fitting for the door lock. The basic structure of the lock box 1 in this door lock is the same as the conventional structure shown in FIG. 3 (the same parts are designated by the same reference numerals and the description thereof will be omitted). First, the structure of the receiving fitting 21 will be described.

A protrusion 24 is provided on a surface 23 of the receiving metal fitting 21 facing the lock box 1 at a position facing the trigger member 3 above the fitting hole 22.

The protrusion 24 is made of a soft material such as synthetic resin, and a spherical tip portion 25 can be inserted into and retracted from a hole 26 formed in the receiving metal piece 21. A coil spring 27 is incorporated in the back of the protrusion 24, and the protrusion 24 is constantly pressed outward by the urging force of the coil spring 27 so that the tip 25 projects from the surface 23 of the receiving metal fitting 21. There is.

The protrusion amount Y of the tip portion 25 is set to be slightly smaller than the gap X formed between the receiving metal fitting 21 and the surface of the lock box 1. For example, when the gap X is about 3 mm, the protrusion amount is about 3 mm. The amount Y is set to about 2 mm.

Further, the spring force of the coil spring 27 that presses the protrusion 24 is set to a value larger than the spring force of the coil spring 13 that presses the trigger member 3, and when the trigger member 3 contacts the protrusion 24, The coil spring 13 contracts due to the difference in spring force, and the trigger member 3 retracts into the lock box 1.

On the other hand, in the lock box 1, the trigger member 3 retracts a little when it comes into contact with the surface of the receiving metal fitting 21 during the opening / closing operation of the door. Is smaller than the engagement distance between the operating arm 7 and the notch 11 and is set so that the engagement between the two is not disengaged. On the other hand, the retracted amount (equal to the protrusion amount Y of the protrusion 24) in which the trigger member 3 is pressed by the contact with the protrusion 24 is larger than the engagement distance between the stopper 12 and the notch 11, It is set to disengage.

In the door lock of the embodiment having the above structure, when the door is completely closed, the lock bolt 2 is fitted into the fitting hole 22 as shown in FIG. The protrusions 24 come into contact with each other, and the locking device 4 is unlocked. However, since the trigger member 3 does not come into contact with the protrusion 24 in any state other than the above state, the engagement between the stopper 12 and the notch 11 is not disengaged, and the locking state of the fastening device 4 is maintained.

Therefore, the lock bolt 2 and the fixing rods 9 and 10 can be moved by operating the handle only when the door is completely closed, and in other cases, the lock bolt and the fixing rod can be moved. It is possible to surely eliminate the accident that the protruding fixing rod or the like damages the floor surface or the like.

Further, when the gap X between the lock box 1 and the receiving metal fitting 21 is varied due to an error in mounting the door, and the gap X is smaller than the protrusion amount Y of the protrusion 24, the protrusion 24 is When the lock box 1 abuts, the coil spring 27 contracts and the protrusion 24 sinks into the receiving metal fitting 21. For this reason, the impact is relieved, and the lock box 1 and the surface of the projection 24 are prevented from being damaged.

In the above embodiment, the tip portion 25 of the protrusion 24 is spherical, but may be cylindrical, and any shape may be used as long as the trigger member 3 is reliably retracted at the door closing position. Can be adopted.

Further, although the gremone lock has been described in the above example, the present invention can be similarly applied to a cylinder lock provided with a trigger mechanism and other locks.

[0025]

【effect】

 As described above, according to the present invention, since the trigger member is retracted by the required amount by the projection provided on the receiving metal fitting, it is possible to operate the lock bolt and the like only in the unlocked state at the door closed position. Accidents such as damage to the floor or door frame due to such malfunctions can be reliably eliminated.

Further, since the amount of advance / retreat of the trigger member can be easily adjusted by appropriately setting the height of the protrusion, the adjustment work is accurate and easy, and the workability of installing the door lock can be greatly improved. .

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a door lock according to an embodiment.

FIG. 2 is a perspective view showing the receiving bracket of the above.

FIG. 3 is a cross-sectional view showing the internal structure of a tablet box of Gremon tablets.

FIG. 4 is a sectional view showing an operating state of the above.

FIG. 5 is a diagram showing the relationship between the trigger member and the receiving metal fitting when the door is opened and closed.

FIG. 6 is a partially longitudinal front view showing a door equipped with a gremone lock.

[Explanation of symbols]

 1 Lock Box 2 Lock Bolt 3 Trigger Member 4 Secured Device 9, 10 Fixed Rod 11 Notch 12 Stopper 13 Coil Spring 21 Receiving Metal Fitting 22 Fitting Hole 24 Protrusion 25 Tip Part 27 Coil Spring A Door B Door Frame

Claims (2)

[Scope of utility model registration request] 1. A lock bolt, which can be retracted and retracted, and a trigger member, which moves back and forth in the retracting direction of the lock bolt, are provided on the surface of the lock box, and the lock bolt is interlocked with the movement of the trigger member inside the lock box. And a locking device for locking and unlocking the door is incorporated, and a receiving metal fitting having a fitting hole for the lock bolt is provided with a protrusion that comes into contact with the trigger member at a position where the lock bolt is fitted in the fitting hole, A door lock with a trigger set so that the locking device is unlocked by retracting the trigger member due to contact with the protrusion. 2. The door lock with a trigger according to claim 1, wherein an elastic member is incorporated in a back portion of the protrusion so that the protrusion is recessed inside the receiving metal when the lock box and the protrusion collide with each other.