JP2887109B2 - Sliding latch lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding latch lock suitable for use as an inner door (shield plate) of a panel such as a distribution board or a distribution board.

[0002]

2. Description of the Related Art A conventional slide-type latch lock merely locks a latch bar to a locking portion only by the urging force of a spring, and does not have a mechanism for locking the latch bar in a locked state. Was normal. Therefore, in order to lock the inner door from the viewpoint of security and safety, it is necessary to separately provide a lock for locking.

[0003]

However, when a dedicated lock is attached, a key for unlocking the lock is required, and the management thereof is complicated. In addition, the inner door has a long vertical dimension and a plurality of slide-type doors are required. When a latch lock is attached, the key must be replaced and the door must be opened, resulting in a problem that workability is poor. In particular, when the door is closed during the operation, the lock must be unlocked again using the key, and there is a problem that the operability is poor.

[0004] The present invention solves the above-mentioned conventional problems, enables the latch rod to be locked in a locked state, enables selection between locking and unlocking, and uses a dedicated key. The purpose of the present invention is to provide a slide-type latch lock that can be unlocked without being locked.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a knob provided with a knob.
Slidably fit inside the casing and push
A slide in which the latch bar is urged toward the locking portion by a spring
Locks the latch bar in the locked position in a latch type lock
Locking device with tongue for sliding the latch rod
The lower end of the rotating shaft that can move back and forth at right angles to the
Provided on the casing as a protruding tongue for hook
It is characterized by the following. Note that a detent may be provided on the rotating shaft.

[0006]

Next, preferred embodiments of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a casing in which a flange plate portion 3 is stretched around the periphery of the front plate portion 2, and is attached, for example, embedded in an inner door 31 of a panel or the like. Reference numeral 4 denotes a latch bar provided inside the casing 1. The lower end of the latch rod 4 has an inclined surface 4c, and a knob 5 is slidably fitted into the casing 1 by protruding from a window hole 6 provided in the front plate portion 2. The latch bar 4 is, as shown in FIG.
It is urged by a pressing spring 8 interposed between the rear portion and the rear plate portion 7 of the casing 1, and the front end locking portion 4 a is inserted into the locking hole 34 of the inner door support portion 33 of the panel. I have. For this reason, in order to retract the latch rod 4 from the locking hole 34, it is necessary to use FIG.
The knob 5 may be operated against the pressing spring 8 as shown in FIG. The inclined surface 4c of the latch rod 4 is for automatically retracting the latch rod 4 by hitting the end surface of the inner door support portion 33 when the door is closed. A guide rail 1a is formed on the inner surface of the casing 1 to engage with the side surface of the latch bar 4.

In the illustrated example, a stopper plate 9 is pivotally supported on the shaft 4b of the latch rod 4. The stopper plate 9 is housed in a hole 10 provided at the center of the latch rod 4, and its tip is in the state where the latch rod 4 is inserted into the locking hole 34 of the inner door support 33. 33 are inserted into the notches 35. However, this stopper plate 9 is a push spring 8
When the knob 5 is operated and the latch bar 4 is retracted, the position shown in FIG. 3 is obtained, and even after the knob 5 is released, the tip of the stopper plate 9 as shown in FIG. Is the locking hole 34 of the inner door support 33 and the notch 3
5 and the latch rod 4 contacts the inner door support 33.
Is prevented from being reinserted into the locking hole 34 of the main body. Therefore, the slide latch lock can be held in the open state by using the stopper plate 9.

A locking device 1 is provided on the upper surface of the end of the casing 1.
1 is provided. The locking device 11 includes the latch rod 4
In the locking position. Locking device 1
A locking tongue 1 is attached to the lower end of a large-diameter rotating shaft 12 that can move forward and backward in the direction perpendicular to the sliding direction of the latch rod 4.
3 are connected in an L-shape. The rotary shaft 12 is rotatably and vertically slidably fitted inside a cylindrical portion 14 protruding from the front plate portion 2 of the casing 1, and is attached upward by a spring 15 fitted on a lower end surface thereof. It is being rushed. The rotation shaft 12 has a detent 18 for regulating its rotation range.
Is provided. Then, the tip of the driver is inserted into a tool insertion portion 17 such as a plus or minus screwdriver on the upper surface of the rotating shaft 12 and is rotated while pressing downward so that the tongue piece 13 can be rotated 90 °. Has become. Since the rotation stopper 12 is provided on the rotation shaft 12, even if an extra force is applied, the rotation shaft 12 does not rotate by more than 90 °.

The tongue 13 extends into the casing 1 through a slit 16 on the bottom surface of the cylindrical portion 14. As shown in FIGS. When the latch rod 4 is rotated in the direction, the tip thereof prevents the latch rod 4 from retreating and locks the latch rod 4.
However, when the rotating shaft 12 is rotated by 90 degrees as shown in FIGS. 3 and 4, the spring 15 ascends to the inside of the slit 16 so that the latch rod 4 can retreat freely. In addition, the cylindrical portion 1
4, a stepped portion is formed, and the rotating shaft 12 is
It shall be prevented from falling off by the force of 5.

The slide type latch lock of the present invention having the above-described structure is used by attaching the front plate 2 of the casing 1 to the inner door 31 of a board, for example.
When the door is closed, the latch bar 4 is urged by a pressing spring 8 as shown in FIG. 1, and the leading end locking portion 4a is engaged with the locking receiving hole 34 of the inner door support portion 33 of the panel. Since the stopper plate 9 slightly protrudes from the distal end locking portion 4a of the latch rod 4, the lower end of the stopper plate 9 is flipped up by the lower edge of the locking receiving hole 34 of the inner door support portion 33 by the closing operation. And enters the notch 35 of the inner door support 33. In order to lock the door closed state, a driver is engaged with a tool insertion portion 17 on the front surface of the rotation shaft 12 of the locking device 11, and the rotation shaft 12 is pressed down against the spring 15 to lower the tongue piece 13. The latch rod 4 is rotated to a position facing the base end. As a result,
The retraction of the latch rod 4 is restricted, that is, the knob 5 cannot be slid, and the slide latch lock is locked.

As shown in FIG. 3 and FIG.
Is rotated by 90 degrees, the tongue 13 rises to the inside of the slit 16 together with the rotating shaft 12 and the latch rod 4 can move freely.
To release the engagement of the latch bar 4 and open the door. As described above, it is possible to easily confirm whether the locking device 11 is in the locked state or the unlocked state based on the state of the rotation and the emergence of the rotation shaft 12.

Further, in this embodiment, since the stopper plate 9 is provided for preventing the leading end locking portion 4a of the latch rod 4 from returning to the locked state when the door is opened, the knob 5 is operated as described above. When the latch bar 4 is retracted, the latch bar 4 can be prevented from being reinserted into the locking hole 34 of the inner door support 33 even if the knob 5 is subsequently released.

[0013]

As is clear from the above description, the slide latch lock of the present invention can lock the latch rod in the locked state, and can be unlocked without using a dedicated key. Because of the advantages that can be obtained, it is suitable for use as an inner door of a board or the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an open state of a slide latch lock according to the present invention.

FIG. 2 is a partially cutaway plan view of FIG.

FIG. 3 is a cross-sectional view showing a state where a latch bar is retracted.

FIG. 4 is a partially cutaway plan view of FIG. 3;

FIG. 5 is a sectional view showing a function of a stopper plate.

[Description of Signs] 1 Casing 1a Guide rail 2 Front plate 3 Flange plate 4 Latch rod 4a Tip locking portion 4b Shaft 4c Inclined surface 5 Knob 6 Window hole 7 Rear plate of casing 8 Push spring 9 Stopper plate 10 Hole Part 11 Locking device 12 Rotating shaft 13 Tongue piece for locking 14 Cylindrical part 15 Spring 16 Slit 17 Tool insertion part 18 Non-rotation 31 Inner door of boards 33 Inner door support part 34 Lock hole 35 Notch of inner door support part Department

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E05B 55/04 E05B 65/00 E05C 1/04

Claims (2)

(57) [Claims] A latch rod (4) provided with a knob (5) is mounted on a case.
Slidably fits inside the ring (1) and presses the spring (8)
Slide biases the latch bar (4) toward the locking portion
Lock the latch bar (4) in the latched position
Locking device (11) with tongue (13) for locking
The number of times that can move forward and backward in the direction perpendicular to the sliding direction of (4).
Locking tongue (13) protruding from the lower end of the driving shaft (12)
Characterized by being provided in the casing (1)
Do-type latch lock. 2. A rotation stopper (18) is provided on the rotation shaft (12).
The slide-type latch lock according to claim 1.