JPH09328937A - Thin latch device with cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the full height of a latch device so as to reduce the fitting space thereof by scraping of both shoulders of a rear end of a fixed body of a cylinder lock so as to form a part having an elliptic cross section, and inserting this part having an elliptic cross sectioning a case main body from a receiver hole of a front surface cover plate so as to form an escape recessed part, in which a tip of a key is to be inserted. SOLUTION: Both shoulders of a rear end of a fixed body of a cylinder lock 5 are scraped off so as to from a part 17 having an elliptic cross section, and this part 17 is inserted into a receiver hole 18 of a front surface cover plate 1. The cylinder lock 5 is fitted in a circular through hole from a back surface side, and a case main body 2 is fixed to a back surface of a boor by a screw, and a bracket metal, with which a tip of a latch body 3 is to be engaged, is fixed to a fixed frame body by a screw. When a door main body is turned for closing, the bracket metal abuts on an inclined surface 25 of a cam at the end of the turn, and after the latch body 3 is slid backward, when the door is full closed, the latch body 3 is slid forward so as to lock the door. A key 7 inserted into the cylinder lock 5 enters an escape recessed part 9 of the latch body 3, and turns a rotor 11 so as to remove the latch body 3 from the bracket metal, and the door can be opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch device with a cylinder key, which is mounted on a door of an electric equipment storage box or the like, and is used to lock and lock the door to a fixed frame such as a box body.

[0002]

2. Description of the Related Art A cylinder lock is fixed to a front cover plate of a flat box-shaped case body with a screw, and a tip end portion of a latch body housed in the case body is projected from a side hole of the case body, and the latch body is projected by a spring in a protruding direction. A cylinder in which the drive cam plate connected to the rotor of the cylinder lock is brought into contact with the passive projection of the latch body, and the key inserted into the key hole of the rotor is rotated to slide the latch body backward. The latch device with a lock
Already known.

In the conventional device, the fixed body of the cylinder lock has its rear end surface in contact with the front cover plate and is fixedly fastened with screws from the back, so that the entire length of the fixed body is exposed outside the front cover plate. . In addition, the rear end of the rotor of the cylinder lock is fitted into the center hole of the front cover plate, and the latch body is retracted sufficiently rearward so as not to contact the front end of the key protruding from the rear end of the rotor. . Therefore, the overall height of the latch device composed of the cylinder lock and the case becomes relatively high, and it is necessary to prepare a large space as a mounting space for the latch device.

[0004] However, there is a tendency that electric equipment storage boxes are also designed to be compact based on the general design concept of light weight and miniaturization, and a reduction in mounting space is also required for a latch device.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a thin latch device with a cylinder lock that can meet the demand for reduction of the mounting space because the total height is reduced.

[0006]

Means for Solving the Problems Hereinafter, the present invention will be described using reference numerals in the accompanying drawings. In the present invention, a cylinder lock 5 is fixed to a front cover plate 1 of a flat box-shaped case main body 2 with screws 13, The tip of the latch body 3 housed in the case body 2 is protruded from the side hole 10 of the case body 2, and the latch body 3 is slidably urged by the spring 4 in the protruding direction, and is connected to the rotor 11 of the cylinder lock 5. The cam plate 6 is brought into contact with the passive projection 12 of the latch body 3, and the key 7 inserted into the key hole 16 of the rotor 11.
In the latch device with a cylinder lock in which the latch body 3 is slid backward by rotating the cylinder lock 5, the shoulders at the rear end of the fixed body of the cylinder lock 5 are deleted to form an oval section 17, and the oval section 17 is moved forward. An escape recess 9 into which the tip of the key 7 enters is provided on the front side of the latch body 3 so as to enter the case body 2 through the receiving hole 18 of the cover plate 1.

[0007] The cylinder lock 5 is an oval portion 1 of a fixed body.
7 is inserted into the receiving hole 18 of the front cover plate 1, and the step surfaces 38 on both sides of the oval portion 17 are abutted against the front cover plate 1,
Screwed to the front cover plate 1. Cylinder lock 5 is door 19
The case body 2 is fitted into the circular through hole 24 of
Is fixed to the back surface of the door 19 with screws 21, and a fixing 22 to which the tip of the latch body 3 is disengaged is fixed to the fixed frame 20 such as the box body with screws 23.

When the door 19 is closed and rotated about the hinge shaft at one end, the front end of the receiving member 22 contacts the cam slope 25 on the rear surface of the tip of the latch body 3 at the end of rotation, and the latch body 3 is attached with the spring 4. Slide backwards against the force. When the door 19 is fully closed, the latch body 3 slides forward by the bias of the spring 4,
The tip portion engages with the through hole 26 of the receiver 22. As a result, the door 19 is locked and locked to the fixed frame 20.

When the key 7 is inserted into the keyhole 16 of the cylinder lock 5, the tip 7 a of the key 7 projects from the rear end of the rotor 11 and enters the escape recess 9 of the latch body 3. When the rotor 11 is rotated clockwise by the key 7, the driving cam plate 6 rotates clockwise in FIG. 6 to push the passive projection 12 of the latch body 3, so that the latch body 3 resists the bias of the spring 4. Then, it slides backward, and the tip portion escapes from the through hole 26 of the receiving metal 22. At this time, the tip 7a of the key 7 apparently moves in the escape recess 9. When the latch body 3 is detached from the receiving member 22, the lock of the door 19 with respect to the fixed frame body 20 is released, and the door 19 can be opened.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a cylinder lock 5 is inserted into a screw hole 1 of a fixing body through a screw hole 14 of a front cover plate 1.
5 is fastened and fixed to the front cover plate 1 by two screws 13 screwed into the front cover plate 1. The screw holes 15 are formed to penetrate from the step surfaces on both sides of the oval portion 17 to the front side of the fixed body.
The protruding height of the oval-shaped portion 7 is approximately 3 times the thickness of the front cover plate 1.
The oval portion 7 is in the case body 2. The rear end portion 11a of the square shaft of the rotor 11 projects from the shaft hole of the oval portion 17, and the driving cam plate 6 is fitted into the rear end portion 11a of the rotor by a square hole 27 so as to be relatively non-rotatable. Are fixed to the rotor 11 by screws 28.

A spring receiving pin 29 is swaged and fixed to the back plate of the case body 2, and the spring receiving pin 29 is
Is inserted into the longitudinal slot 30. A compression coil spring is used as the biasing spring 4 of the latch body 3 and is housed in the slot 30. On the back plate of the case body 2, two spacer pins 3 sandwiching the spring receiving pin 29 are provided.
1 is crimped and fixed. The screw 8 is screwed into the screw hole 32 of the spacer pin 31 from the screw hole 33 of the front cover plate 1, whereby the front cover plate 1 and the case body 2 are assembled. At the front end of the side plate of the case body 2, four positioning notches 34 are provided, and these notches 34
The positioning claw portion 35 of is fitted.

Two guide pins 36 are fixed by caulking on the back side of the front cover plate 1 with the receiving hole 18 interposed therebetween. The guide pins 36 and the spacer pins 31 contact the side surfaces of the latch body 3 and serve as guide means for sliding the latch body 3 forward and backward. Screw holes 37 are provided at the four corners of the rear plate of the case body 2.
The case body and the front cover plate 1 are fastened and fixed to the rear surface of the door 19 by screws 21 passing through the screw holes 37.

[0013]

As described above, according to the present invention, an oval section 17 is formed by removing both shoulders at the rear end of the fixed main body of the cylinder lock 5, and the oval section 17 is received by the front cover plate 1. Hole 1
8 is provided in the case body 2, while the escape recess 9 in which the tip 7 a of the key 7 enters is provided on the front side of the latch body 3, so that the overall height of the device composed of the cylinder lock 5 and the case body 2 is small. As a result, the mounting space of the device can be reduced by the amount corresponding to the amount of entry of the shape portion 17.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a thin latch device with a cylinder lock according to an embodiment of the present invention.

FIG. 2 is a front view of the latch device.

FIG. 3 is a bottom view of the latch device.

FIG. 4 is a left side view of the latch device.

FIG. 5 is a right side view of the latch device.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a sectional view taken along the line BB of FIG. 3;

FIG. 8 is a use state diagram of the latch device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 front cover plate 2 case body 3 latch body 4 latch body biasing spring 5 cylinder lock 6 drive cam plate 7 key 8 case assembling screw 9 escape recess at key tip 10 side hole of case body 11 cylinder lock Rotor 12 Passive projection of latch body 13 Screw for fixing cylinder lock 14 Screw hole of front cover plate 15 Screw hole of fixing body of cylinder lock 16 Key hole 17 Oval portion of fixing frame of cylinder lock 18 Front cover plate Receiving hole 19 Door 20 Fixing frame 21 Screw for fixing the case body 22 Receiving metal 23 Screw for fixing the fixing metal 24 Through-hole for locking the cylinder of the door 25 Cam slope of the latch body 26 Through-hole of the receiving metal

Claims (1)

[Claims] 1. A cylinder lock 5 is fixed to a front cover plate 1 of a flat box-shaped case main body 2 with a screw 13, and a tip end of a latch body 3 housed in the case main body 2 is inserted into a side hole 10 of the case main body 2.
The latch body 3 is slid and urged by the spring 4 in the projecting direction, and the driving cam plate 6 connected to the rotor 11 of the cylinder lock 5 is brought into contact with the passive projection 12 of the latch body 3, and the rotor 1
In the latch device with a cylinder lock in which the key 7 inserted into the key hole 16 is turned to slide the latch body 3 backward, the shoulders at the rear end of the fixed main body of the cylinder lock 5 are deleted to form an oval section 17 in section. Then, the oval-shaped portion 17 is inserted into the case body 2 through the receiving hole 18 of the front cover plate 1, and the latch body 3 is formed.
A thin latch device with a cylinder lock, wherein an escape recess 9 into which the tip of the key 7 enters is provided on the front side of the latch.