JPH05343862A - Locking device for control box - Google Patents

Abstract

PURPOSE:To make it possible to lock reliably a door up in a box main body key engaging the door with two places on the locking device of a contact box and to uitilize an opening part for the positions of various components or the like to the full by a method wherein the control box having a space for liquid inflow prevention on the periphery of the opening part is provided with the locking device utilizing the space for liquid inflow prevention. CONSTITUTION:A control box 1, which is provided so as to work as a space 11 for liquid inflow prevention to an opening part 6, is provided with a control member 18, which can be freely rotated reciprocably in the middle in the direction along the peripheral edge part 7b of a door 7. Engaging rods 24 and 24, which can be freely made to advance and retreat, are provided on both sides of the member 18 holding the member 18 between them. The member 18 and both engaging rods 24 and 24 are respectively made to link to each other by linking members 28 and 29 in such a way that each engaging rod can be made to advance and retreat by the reciprocating rotation of the member 18. On the other hand, engaging members 36 for making the point parts of the engaging rods engage and separate with and front a bod main body 2 by the advance and retreat of the engaging rods are respectively provided at positions, where respectively correspond to each point part of the rods 24 and 24, on the box main body 2. Thereby, the opening part 6 on the front surface of the main body 2 can be opened in a state that hands are not used at all.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casing of a control panel for controlling a control device, a terminal box or the like (in the present specification, these are referred to as an operation box), and a door that can be opened and closed with respect to the box body. The present invention relates to a lock device for an operation box used to lock a door in a closed state.

[0002]

2. Description of the Related Art In a door hinged to a box body, a lock device is provided at the free end side. In this case, the locking device is provided at a position facing the opening on the front surface of the box body so that the locking device does not collide with the box body. The locking rod extending vertically in the locking device is engaged with and disengaged from the engaging members provided at the upper and lower edges of the opening of the box body. With such a structure, it is preferable that the closed state of the door can be reliably locked by engaging the upper and lower portions.

[0003]

In this conventional structure,
The locking device will occupy part of the opening in the box body. For this reason, there is a problem that various electrical parts and electric wires for wiring must be arranged in a position avoiding a place where the above-mentioned locking device exists, either in the box body or in the door. It was

The present invention has been made in order to solve the above-mentioned problems (technical problems) of the prior art. The liquid inflow is introduced into an operation box having a space for preventing liquid inflow around the opening. By providing the lock device by utilizing the prevention space, the door can be reliably locked to the box body by the engagement of the lock device at two positions, and the opening of the box body can be various parts. It is an object of the present invention to provide a lock device for an operation box having a structure that enables it to be fully utilized for the storage of electric wires for wiring and wiring.

[0005]

In order to achieve the above object, a lock device for an operation box according to the present invention comprises a hollow box main body and a door hinged to the box main body so that the front of the box main body can be freely opened and closed. The front surface of the box body has an opening inside the peripheral edge member leaving a narrow peripheral edge member, and a packing contact piece is stretched forward from the inner peripheral edge of the peripheral edge member. On the other hand, the door has a closing portion for closing the opening portion and a peripheral portion which is arranged to face the peripheral member at the periphery thereof, and
A cover piece that projects rearward is provided around the outer peripheral edge of the peripheral edge portion, and a space surrounded by the peripheral member, the packing contacting piece, the peripheral edge portion, and the cover piece extends to the opening portion. In the operation box designed to be a space for liquid inflow prevention,
In the peripheral edge portion on the free end side of the door, a reciprocating rotatable operation member is provided in the middle of the direction along the peripheral edge portion, and further, the operation member is sandwiched on the outer peripheral side of the operation member, and both sides thereof are respectively provided. In addition to having a hanging rod that can move back and forth in the direction along the peripheral edge, one of the hanging rods has a tip portion that extends to one end in the direction along the peripheral edge portion, and the other has the tip portion that has the above-mentioned peripheral edge portion. The operating member and the both hanging rods are connected by a connecting member so that each hanging rod can be advanced and retracted by the reciprocating rotation of the operating member. Engagement members for engaging and disengaging the tip end of the hanging rod by advancing and retracting the tip end of the hanging rod are provided at positions corresponding to the respective tip end portions of the both hanging rods in the box body.

[0006]

When the operating member is rotated, the hanging rods on both sides of the operating member advance and retreat, respectively, and engage and disengage from the engaging member. In the engaged state of the two, the door is locked in the closed state, and by releasing the engagement, the lock is released and the door can be freely opened.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, reference numeral 1 indicates an operation box. Reference numeral 2 is a hollow box body, in which various electric parts and electric wires for wiring are housed. 3 indicates the front surface of the box body. Reference numeral 4 denotes a peripheral member on the front surface, which is formed by bending the front end portion of the box body 2. Reference numeral 5 denotes a packing abutting piece that extends forward from the inner peripheral edge of the peripheral member 4. Reference numeral 6 denotes an opening inside the peripheral member 4. Next, 7 is a door, which is formed in a size large enough to cover the front surface 3 of the box body 2, and one edge of which is hinged to the box body 2 with a hinge 8. Reference numeral 7a indicates a closing portion for closing the opening 6 in the door 7, and reference numeral 7b indicates a peripheral edge portion facing the peripheral edge member 4. Reference numeral 9 denotes a cover piece that projects rearward from the outer peripheral edge of the peripheral edge portion 7b, 10
Is a packing attached to the rear surface of the door 7 at a position corresponding to the packing contact piece 5. Reference numeral 11 denotes a space surrounded by the peripheral member 4, the packing contact piece 5, the peripheral portion 7b, and the cover piece 9 for preventing liquid such as water or oil from flowing into the opening 6. It is formed in four rounds of 6. Reference numerals 12 denote panel parts such as lamps and switches attached to the door 7.

Next, reference numeral 13 shows a lock device provided at the free end side portion of the door 7 in the section 11. Reference numeral 14 denotes a main body of the apparatus, which is attached to the peripheral edge portion 7b of the door 7. The main body 14 will be described with reference to FIGS. Reference numeral 15 denotes a base frame of the main body 14, which is fixed to the door 7 as shown in FIG. Adhesion or welding means is used as the fixing means. You may use a screwing means. Reference numeral 16 is a guide groove provided in the base frame 15, and 17 is a guide piece for guiding a hanging rod described later. Reference numeral 18 denotes an operation member rotatably mounted on the base frame 15, and an operation portion 19 is integrally provided at one end. As shown in FIG. 1, the operation portion 19 is formed with a groove 20 for fitting a coin, for example, and is exposed to the front side of the door 7 through a through hole 21 formed in the door 7.

Next, as shown in FIG. 4, 24, 24 are hooks, which are arranged in parallel to each other on both sides of the operating member 18 with the operating member 18 sandwiched therebetween, as shown in FIG. As a result, it can freely move back and forth along the peripheral edge 7b. As is apparent from FIG. 1, these hanging rods 24, 24 have a length such that one end 24a extends to one end 7b 'in the direction along the peripheral edge 7b, and the other has the other end 24a. 7b ". Reference numeral 25 shown in FIG. 4 is a spring for biasing the latch, which is mounted on the latch 24 using a compression coil spring and is formed on the base frame 15 by a spring seat. 26 and a spring seat 27 formed on the hanging rod 24. 28 and 29 are operating members.
A pair of connecting members for connecting the 18 and the hanging rod 24 are shown.
In this example, a pin fixed to the operating member 18 is used as the member 28, and the member 29 has a concave portion formed in the hanging rod 24, and the member 28 is placed therein. The pair of connecting members may have a structure in which the operating member 18 is provided with a pinion and the hanging rod 24 is provided with a rack that meshes with the pinion. 31 is a lid, the base of the hanging rod 24, a spring
25, which covers the operation member 18 and the like, and is fixed to the base frame 15 with a set screw 32. The door 34 is shown in FIGS.
A guide member that is fixedly attached to the
I have inserted 24. Next, 36 is an engaging member provided on the side of the box body 2 of the locking device 13, which is attached to the peripheral member 4 and has a through hole 37 in which the tip end portion 24 of the hanging rod 24 is provided.
a comes in and goes out.

In the above-mentioned construction, the tip end 24a of the hanging rod 24, which is biased by the spring 25 when the door 7 is closed, serves as the engaging member 36 as shown in FIGS. Engaged and the door 7 is locked closed. When it is desired to open the door 7 from this state, the operation member is operated via the operation unit 19.
Turn 18 clockwise in FIG. 4 (A) to turn it into FIG. 4 (B).
To the state like. By doing so, the hanging rod 24 moves in the direction of the arrow in FIG.
The leading end 24a of the engaging member 36 is shown in phantom in FIG.
Through the through hole 37. Therefore, in this state, if the free end side portion of the door 7 is pulled in the direction of arrow 40 in FIG. 2, the door 7 can be opened as shown by the imaginary line in FIG. After the door 7 is opened, when the operation of the operation section 19 is released, the urging force of the spring 25 causes the hanging rod 24 and the operation member 18 to return to the state of FIG.

Next, when the opened door 7 is closed again,
As shown by an arrow 41 in FIG. 2, the door 7 is pressed toward the box main body 2 for operation. Then, the obliquely formed guide portion 24b of the tip end portion 24a of the hanging rod 24 comes into contact with the engaging member 36, so that the hanging rod 24 is retracted by the guide portion 24b (the spring 25 is compressed). When the tip end 24a of the hanging rod 24 reaches the position facing the through hole 37, the tip end 24a of the hanging rod 24 is again engaged with the engaging member 36 by the urging force of the spring 25 as shown by the solid line in FIG. , The door 7 is locked in the closed state.

[0012]

As described above, according to the present invention, the door 7
In the closed state, a space 11 for preventing liquid inflow is formed around the opening 6 of the box body 2, so that oil and water are effectively prevented from entering the box body 2 and the internal electric components and There is an effect that the wiring can be protected safely.

Moreover, when the door 7 is closed as described above,
When the hanging rods 24, 24 are engaged with the two engaging members 36, 36, respectively, the door 7 can be securely locked in the closed state, and when the door 7 is desired to be opened, one operating member 18 is operated. Thus, there is an effect that the above two locations are disengaged to unlock the door and the door 7 can be freely opened.

Moreover, even in the case where the engagement is performed at two positions, the structure of the lock device 13 is arranged so that the reciprocating operation member 18 is moved forward and backward by the reciprocating operation of the operation member. Because of the structure in which the hanging rods 24, 24 are arranged, the outer shape thereof has a narrow shape, and is characterized in that it can be easily positioned in the narrow space 11 for preventing liquid inflow outside the opening 6. .. This means that the locking device 13 as described above
Even in the operation box 1 provided with the above, the opening 6 on the front surface of the box body 2 can be left untouched, and the opening can be used for storing various parts and wiring wires. There is a usefulness that can be utilized to the full for the retention of.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a lock device for an operation box.

FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1 showing the relationship between the box body, the door, and the lock device.

3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4A is a partially cutaway view showing a state where the main body of the locking device is viewed from the back side in a locked state, and FIG. 4B is a similar view in an unlocked state.

[Explanation of symbols]

 2 Box body 4 Peripheral member 5 Packing contact piece 6 Opening 7 Door 11 Space for preventing liquid inflow 13 Lock device 18 Operating member 24, 24 Hanging rod

Claims (1)

[Claims] 1. A hollow box main body and a door hinged to the front and back of the box main body so that the front and rear of the box main body can be freely opened and closed. The inside is an opening, and a packing contact piece is protruded from the inner peripheral edge of the peripheral member toward the front, while the door is a closing part for closing the opening and its surroundings. In the above, there is provided a peripheral edge portion facing the peripheral edge member, and a cover piece that projects toward the rear is provided around the outer peripheral edge of the peripheral edge member. In the operation box in which the space surrounded by the four pieces, the peripheral portion and the covering piece, is a space for preventing liquid from flowing into the opening, the peripheral edge of the door on the free end side is the peripheral edge. An operation member that can be reciprocally rotated in the middle of the direction along the section Further, on the outer peripheral side of the operating member, the operating member is sandwiched, and on both sides thereof, there are provided hanging rods which can move back and forth in a direction along the peripheral edge portion, and one of the hanging rods has a tip portion along the peripheral edge portion. One end of the operating member and the two hanging rods are reciprocated between the operating member and the two rods. The hanging rods are connected to each other by a connecting member so that they can be moved back and forth by turning, and at the positions corresponding to the respective tip ends of the two hanging rods in the box main body, the leading end portions of the hanging rods are moved forward and backward. A lock device for an operation box, comprising engaging members for engaging and disengaging, respectively.