JP2000199360A - Door latch device for garbage disposal facilities or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door latch device for garbage disposal facilities or the like having a simplified and durable structure capable of eliminating illegal access to the disposal facilities or the like by somebody other than the related people, and of achieving excellent operability. SOLUTION: A drive arm part 10 of an operation lever 9 pivotally installed on a shaft bearing plate part 7 is applied to a passive wall part 11 of a latch 5, a stopper 14 engaged with a passive arm part 13 of the operation lever 9 is provided on a slider 12 which is energized by a spring, and a card type lock unit 16 is fixed on the front surface side of a fixed case 2. On a key card 17, a key protruded part 18 to push the slider 12, a key step part 19 to push the passive arm part 13 of the operation lever 9, and an escape groove part 22 for an obstacle pin 21 in a key hole 20 are provided, a spring-energized lock ball 24 is contained in a receiving hole opened in the key hole 20, and a lock hole 23 in which the lock ball 24 is detachably engaged is provided in the key card 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door latch device used for locking garbage disposal facilities and the like.

[0002]

2. Description of the Related Art Garbage collection and treatment facilities are installed in each residential area in a residential complex or the like. However, at present, it is troubled by outsiders to illegally dump garbage outside a specified time. It has also been proposed to attach a lock unit to the door of the processing equipment to prohibit access by anyone other than the parties concerned,
In a processing facility installed in the open air, a lock unit that is too sophisticated has a problem of malfunction due to corrosion and clogging of dust.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a simplified and durable structure adapted to the use conditions of outdoor installation, and to prevent unauthorized access of processing equipment and the like by persons other than those concerned. An object of the present invention is to provide a door latch device for a garbage disposal facility or the like which can be eliminated as much as possible and has excellent operability.

[0004]

A latch device for a door of a garbage disposal facility or the like according to the present invention is described below with reference to the reference numerals in the accompanying drawings. A latch 5 engaged with and disengaged from the metal receiving portion 4 of the body 3 is retractably accommodated, and the latch 5 is moved and urged by a spring 6 in a forward direction in which the latch 5 is engaged with the metal receiving portion 4. 27, the operation lever 9 is pivotally attached to the bearing plate 7 by a pivot 8 parallel to the front surface of the door, and the drive arm 10 of the operation lever 9 is brought into contact with the passive wall 11 of the latch 5 to fix the fixed case 2 A slider 12 that moves in the forward and backward directions of the latch 5 is disposed on the front side of the.

The slider 12 is provided with a stopper 14 for engaging the rear side of the passive arm portion 13 of the operation lever 9 to prevent the operation lever 9 from rotating in the unlocking direction.
The slider 12 is moved and biased by a spring 15 in a direction in which the slider 4 engages the passive arm 13 of the operation lever 9, and a card-type lock unit 16 is fixedly provided on the front side of the fixed case 2.
The key card 17 inserted into the key hole 20 of the lock unit 16 includes a key protrusion 18 for pressing the slider 12, a key step 19 for pressing the passive arm 13 of the operating lever 9, and a key hole 20 for the lock unit 16. Disturbance pin 2 set to
1 is provided with an escape groove portion 22, and a locking ball 24, which is projected and urged by a spring 25, is received in a receiving hole 26 opened on the inner side surface of the key hole 20 of the lock control unit 16.
4 is provided with a locking hole 23 which is engaged and disengaged.

In the door latch device of the present invention thus constructed, the door 1 is fixed to the fixed frame 3 by engaging the latch 5 projecting leftward from the fixed case 2 with the metal receiving portion 4 of the fixed frame 3. The body 3 is locked, and the locked state is maintained by the spring 6. In this locked state, the slider 12
Is urged by a spring 15 to the most retracted position to the right, and the stopper 14 is engaged with the rear side of the passive arm 13 of the operation lever 9. Therefore, in FIG. 4, the clockwise rotation of the operation lever 9 about the pivot 8 is restricted.

[0007] The residents of the housing complex use the key card 17 assigned to the living quarter to enter the key hole 20 of the lock unit 16.
And pushing the right side surface of the slider 12 by the key projection 18 of the key card 17. The stopper 14 moves to the left along with the slider 12 and escapes from the space on the back side of the passive arm 13 of the operation lever 9. At a later stage, the key step portion 19 of the key card 17 pushes the right side surface of the passive arm portion 13 of the operation lever 9, so that the operation lever 9 rotates clockwise around the pivot 8, and The drive arm 10 pushes the passive wall 11 of the latch 5. Since the key card 17 is inserted through the entire length of the key hole 20 of the lock unit 16, even if dust enters the key hole 20, the key card 17 is pushed out by the key card 17, thereby causing a clogging phenomenon. There is no.

As a result, the latch 5 retreats to the right against the urging of the spring 6, and the leading end of the latch 5 escapes from the receiving portion 4 of the fixed frame 3, and The door 1 is unlocked. In the unlocked state as described above, a part of the locking ball 24 attached to the receiving hole 26 on the main body side of the lock unit 16 engages with the receiving hole 23 at the intermediate portion of the key card 17, Is held by the bias of the spring 25, the key card 17 is
6 is kept pressed into the key hole 20. Therefore, the resident releases his / her hand from the key card 17 to open the door 1 and dumps garbage inside the processing equipment.

When the door 1 is closed after dumping the garbage, the inclined cam surface 5a on the rear side of the tip of the latch 5 hits the edge of the opening of the fixed frame 3, so that the latch 5 is opposed to the spring 6. When the door 1 is completely closed and the door 1 is completely closed, the latch 5 moves forward to the left by the bias of the spring 6 and engages with the receiving part 4. Key card 27 after door 1 is completely closed
Is pulled out from the lock unit 16 and is again in the locked state.

[0010]

In the illustrated embodiment, the biasing spring 6 of the latch 5 is formed of a compression coil spring, and the drive arm 10 of the operating lever 9 is formed of the elongated slot 3 of the fixed case 2.
Inserted from 0. Fixed to the front of the fixed case 2
The head of the guide bolt 28 is fastened and fixed to the L-shaped guide plate 29 by a nut 30. The tip of the shaft of the guide bolt 28 is inserted into the through hole 31 of the slider 12, and the biasing spring 15 formed of a compression coil spring is disposed between the slider 12 and the guide plate 29. It is fitted on a guide bolt 28. An adjustment nut 33 is fitted on the tip shaft of the guide bolt 28 so as to adjust the position of the stopper 14 and the passive arm 13.

The passive arm 13 of the operating lever 9 is formed by welding an L-shaped plate, and the lock unit 16
Are arranged so as to traverse the extension of the key hole 20. The key projection 18, the key step 19, and the locking hole 23 of the key card 17 are provided symmetrically with respect to the longitudinal center line of the key card 17, and the escape groove portion 22 is provided on the longitudinal center line. . For this reason, the key card is in a reversible format, and the unlocking operation can be performed regardless of which of the key cards is inserted. The locking ball 24 made of a metal ball. It is urged by a spring 25 composed of a compression coil spring.

[0012]

According to the door latch device of the garbage disposal facility or the like of the present invention configured as described above, the card type that manages the locked state in which the latch 5 is engaged with the metal receiving portion 4 of the fixed frame 3 is provided. Of the key card 17
It is possible to appropriately prevent unauthorized access to the garbage disposal facilities and the like by an outsider who does not have the garbage.

The structure of the slider 12, the stopper 14, and the lock unit 16 for restricting the operation of the operation lever 9 for retracting the latch 5 to the unlock position is mechanically simple, and has a key hole. Even if dust enters the device 20, it is removed by insertion of the key card 17, so that it is well suited to the usage environment of processing equipment and the like installed outdoors, without causing corrosion and dust clogging. It operates stably and has good durability.

Furthermore, the key hole 2 of the lock unit 16
Since the key card 17 inserted into the door 1 is held at the insertion viewing position by the engagement of the locking ball 24 and the locking hole 23 urged by the spring 25, the key card 17 is Since there is no hassle of extracting and storing or putting it in a pocket, a series of operability is good.

[Brief description of the drawings]

FIG. 1 is a front view of a door latch device of a garbage disposal facility or the like according to an embodiment of the present invention when a front cover is removed.

FIG. 2 is a plan view of the door latch device.

FIG. 3 is a right side view of the door latch device.

FIG. 4 is a horizontal sectional view of the door latch device.

FIG. 5 is a front view of a key card used for the door latch device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Fixed case 3 Fixed frame 4 Metal receiving part 5 Latch 6 Latch biasing spring 7 Bearing plate 8 Axis 9 Operating lever 10 Drive arm 11 Passive wall 12 Slider 13 Passive arm 14 Stopper 15 Slider bias Spring 16 Lock Unit 17 Key Card

Claims (1)

[Claims] 1. A fixed case 2 fixed to a door 1 accommodates a latch 5 which can be engaged with and disengaged from a metal receiving portion 4 on a fixed frame 3 side. The operating lever 9 is pivotally attached to the bearing plate 7 by a pivot 8 parallel to the front surface of the door inside the front cover 27 of the fixed case 2 so that the operating lever 9 is driven. 10 is brought into contact with the passive wall portion 11 of the latch 5, a slider 12 that moves in the forward and backward directions of the latch 5 is arranged on the front side of the fixed case 2, and engages with the rear side of the passive arm portion 13 of the operation lever 9. A stopper 14 for preventing the operation lever 9 from rotating in the unlocking direction is provided on the slider 12, and the slider 12 is urged to move by a spring 15 in a direction in which the stopper 14 engages with the passive arm 13 of the operation lever 9. Front side of fixed case 2 The key type lock unit 16 is fixedly mounted on the key lock unit 16, and the key card 17 inserted into the key hole 20 of the lock unit 16 includes a key protrusion 18 for pressing the slider 12,
Key step 19 for pressing the passive arm 13 of the operating lever 9
An escape groove 22 for the baffle pin 21 set in the key hole 20 of the lock unit 16 is provided, and a spring 25 urges the receiving hole 26 opened on the inner side surface of the key hole 20 of the lock unit 16. A latch device for a door of a garbage disposal facility or the like in which a stopping ball 24 is accommodated and a locking hole 23 through which the locking ball 24 is engaged and disengaged is provided in the key card 17.