JPH0425897Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an embedded latch device whose main portion is embedded in the door panel of a walk-in refrigerator, cabinet, or the like.

(Prior art) In the built-in latch device, by pulling the operating finger hook on the front side of the latch body from the front side of the door panel, the latch body is opened in a case embedded in the back side of the door panel. The door panel is locked and unlocked from the fixed frame by sliding parallel to the panel and engaging and disengaging the tip of the latch with a receiving part provided on the fixed frame of the cabinet body, etc. .

A lock is inserted and fixed from the front plate of the case into the case body on the rear side, and by moving the stop plate fixed to the rotor of the built-in lock toward and away from the latch body, the latch body is attached to the case. It is locked and unlocked.

(Problem to be solved by the invention) However, with such a built-in latch device, if the door panel is accidentally closed and locked while an employee is working inside the fixed frame, the worker will have to open the built-in lock. Because the door cannot be unlocked from inside the door panel, it is impossible to escape on your own, and if you are left locked in for a long time, there is a risk of suffocation or freezing to death.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a recessed latch device that can be easily released from inside the door panel.

(Means for Solving the Problems) The embedded latch device of the present invention will be explained below using the reference numerals in the attached drawings. 3 and a latch body 4 that slides along the door panel 1; and a front plate 9 of the case 2.
a built-in lock 22 which is attached to the latch body 4 and prevents the latch body 4 from sliding in the unlocking direction; , a front side member 29 having an operation finger hook 12, and a front side member 29 which can be slid independently with respect to the front side member 29 in the unlocking direction of the latch body 4, and the rotor of the lock 22 The stop plate 24 fixed to the front side member 2
The rear side member 28 is provided with a claw portion 6 that can be connected to and detached from only the rear side member 9, and that locks and unlocks the door panel 1 on the fixed frame 7 by engaging and disengaging the receiving portion 8 on the fixed frame 7 side.
8 is provided with an inner operating body 26.

(Function) Put your finger on the operating finger hook 12 of the latch body 4 from the opening of the front plate 9 of the case 2, and slide the latch body 4 in the unlocking direction against the bias of the built-in compression coil spring 17. When moved, the tip claw 6 of the latch body 4
is detached from the receiving part 8 on the fixed frame side, and the door panel 1
is unlocked.

To fully lock the lock after finishing work, etc., insert the key into the built-in lock 22 on the front plate 9 of the case, rotate the rotor 23 90 degrees, and then lock the stopper plate 24 at the tip of the rotor 23 on the front side member 29. Base end wall portion 29a
By bringing the latch body 4 into contact with the case 2
Can be locked against.

When unlocking the door panel 1 from the inside, pull the inner operating body 26 connected to the rear main body 3 in the unlocking direction, and the front member 29 of the latch body 4 and the rear member 2
Using the play space 27 set between 8 and 8,
The back side member 28 is slid within the back side main body 3 of the case 2 by a required stroke, and the tip claw portion of the back side member 28 is separated from the receiving portion 8 on the fixed frame body 7 side. As a result, the door panel 1 is unlocked from the fixed frame 7, and the door panel 1 can be opened from the inside.

(Example) In the illustrated embodiment, the entire latch device is constructed such that the front plate 9 of the case is brought into contact with the door panel 1 from the front side of the door panel 1, and the rear body 3 of the case is brought into contact with the door panel 1 from the rear side of the door panel 1. By abutting against the door panel 1, inserting the stud bolt 10 of the front plate 9 into the mounting hole of the door panel 1 and the mounting hole 40 of the rear body 3, and screwing the nut 11 onto the stud bolt 10. Then, it is tightened and fixed to the door panel 1.

The inner operating body 26 is arranged on the back side of the back body 3 of the case, and is fixed to the back side member 28 by a screw 30 passing through a slot 31 for floating provided in the back wall of the back body 3. An escape notch 36 of the cylindrical guide wall 19 is provided on the front side of the inner operating body 26, and an instruction mark 37 for indicating the operating direction is provided on the back side of the inner operating body 26.

The front side member 29 of the latch body is provided with a cylindrical guide wall 19 at the side end 29b of the finger hook recess 12. The cylindrical lock mounting body 5 housed in the guide wall 19 so as to be freely protrusive and retractable is slidably biased in the projecting direction by a compression coil spring 13 inserted between the bottom wall and the outer circumferential surface of the base end. A locking protrusion 16 is provided on. The cylindrical guide wall 19 is provided with a circumferential groove 20 and an axial groove 21 perpendicular thereto. When the locking projection 16 engages the circumferential groove 20, the lock mount 5 is held in the retracted position.

If you insert a screwdriver, coin, etc. into the receiving groove 25 at the top of the lock mount and rotate the lock mount 5 by 90 degrees,
The locking projection 16 of the lock mount 5 reaches the axial groove 21 along the circumferential groove 20 . Therefore, the lock mounting body 5, which is biased by the compression coil spring 13,
It moves forward along the axial groove 21 and protrudes by a distance necessary and sufficient to insert a hook bar 15 such as a padlock into the receiving hole 14 at the front end.

Under normal conditions when not used for installing external locks,
Since the lock attachment body 5 is buried and held in the front side member 29 of the latch body 4, the above-mentioned inner operating body 2
There is no hindrance to the unlocking operation from the inside according to No. 6.

In this embodiment, the front plate 9 of the case is provided with a shutter 32 that covers the front keyhole of the built-in lock 22, and the shutter 32 slides laterally along the guide groove 38 of the front plate 9. move. Legs 33 with side walls 39 that slide on the door panel 1 are integrally molded on the outer end of the shutter 32 to prevent breakage or distortion of the shutter 32 when the shutter 32 is pulled out.

Base end wall portion 29a of front side member 29 of latch body 4
A groove 35 for escape of the built-in lock 22 is provided in the center, and a long hole 34 for escape of the cylindrical guide wall 19 is provided on the back wall of the main body 3 on the back side of the case 2. The rear side member 28 of the latch body 4 is provided with an elongated hole 41 for escape of the cylindrical guide wall 19.

(Effects of the invention) As described above, in the embedded latch device of the present invention, the latch body 4 housed in the main body 3 on the back side of the case 2 has the claw part 6 that engages and disengages with the receiving part 8 on the fixed frame body 7 side.
The back side member 28 is divided into a back side member 28 provided with an operation finger rest 12 and a front side member 29 provided with an operation finger rest 12.
The built-in lock 22 can be slid independently in the unlocking direction.
Since the stop plate 24 fixed to the rotor 23 comes into contact with and separates only from the front side member 29, as a result of the built-in lock 22 being operated from the front side of the door panel 1,
Even if sliding of the front side member 29 in the unlocking direction is prevented, that is, even if the latch body 4 is locked with respect to the case 2 from the outside of the door panel 1, the latch body 4 provided on the rear side member 28 By pulling the inner operating body 26, the receiving part 8 and the claw part 25 are disengaged,
The door panel 1 can be accurately unlocked from the fixed frame 7.

From the outside, it is possible to prevent theft and illegal intrusion by strictly locking using the built-in lock 22, while from the inside, it is possible to prevent accidents caused by locking in with a simple unlocking operation.

[Brief explanation of the drawing]

The drawings show an implantable latch device according to an embodiment of the present invention, in which FIG. 1 is a front view of the latch device, FIG. 2 is a bottom view of the latch device, and FIG. 3 is taken along line A-A in FIG. 4 is a rear view of the latch device, FIG. 5 is a right side view of the latch device, and FIG.
The figure is a sectional view taken along line B--B in FIG. 1, and FIG. 7 is a sectional view taken along line C--C in FIG. Fig. 8 is a front view of the latch device with the front side plate of the case and the lock removed; Fig. 9 is a perspective view of the guide wall portion for the lock mounting body of the latch body assembled in the latch device; Fig. 10 The figure is a perspective view of the lock mount, and FIG. 11 is a horizontal sectional view of the guide wall and the lock mount. DESCRIPTION OF SYMBOLS 1... Door panel, 2... Case, 3... Back main body of case, 4... Latch body, 5... Lock attachment body, 6... Tip claw part of latch body, 7... Fixed frame body, 8... Receiving part on the fixed frame side, 9... Front side plate of the case, 10... Studded bolt, 11...
Nut, 12... Recess for finger hook, 23... Compression coil spring, 14... External lock receiving hole, 15... Padlock hook bar, 16... Locking protrusion, 17... Spring for sliding bias, 18 ... Guide rod, 19 ... Cylindrical guide wall, 20 ... Circumferential groove, 21 ... Axial groove, 22 ... Built-in lock, 23 ... Rotor, 24 ...
... Stop plate, 25 ... Receiving groove, 26 ... Inner operating body, 28 ... Back side member of latch body, 29 ... Front side member of latch body, 27 ... Play space for independent sliding of back side member , 30... Screw for fixing the inner operating body, 31... Elongated hole for floating, 32... Shutter for built-in lock, 33... Leg of shutter, 34... Elongated hole for relief in cylindrical guide wall, 35 ...Escape slot of the built-in lock, 36...Escape cutout of the cylindrical guide wall, 41...Escape slot of the cylindrical guide wall.

Claims (1)

[Scope of utility model registration request] A case 2 is embedded in the door panel 1, a latch body 4 is housed in the rear body 3 of the case and slides along the door panel 1, and a latch body 4 is installed in the front plate 9 of the case 2 and It consists of a built-in lock 22 that prevents the latch body 4 from sliding in the unlocking direction, a rear side member 28 that urges the latch body 4 to slide in the locking direction by a spring 17, and a finger rest for operation. 12 and a front side member 29, the rear side member 28 is capable of independently sliding with respect to the front side member 29 in the unlocking direction of the latch body 4, and a stop fixed to the rotor 23 of the lock 22. The metal plate 24 can be attached to and separated from only the front side member 29, and the claw portion 6 that locks and unlocks the door panel 1 from the fixed frame 7 by engaging and disengaging from the receiving portion 8 on the fixed frame 7 side is attached to the rear side member 28. An embedded type latch device, which is provided in the rear side member 28 and has an inner operating body 26.