JPH10121818A - Locking device for door of casing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a locking device by providing a lock lever member to a lid body and a casing respectively, and an engagement member to be engaged therewith. SOLUTION: A locking device comprises a lock lever member 44 provided on a door member 12 and a catch member 48 as a member to be engaged. When an engagement part of the lock lever member 44 is engaged with a holding part 48A of the catch member 48, the locking device is in the locked condition. When the engagement part of the lock lever member 44 is detached from the holding part 48A of the catch member 48, the locking device is placed in the unlocked condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device for a housing in which a door member selectively opened and closed with respect to an opening in the housing is fixed to the housing.

[0002]

2. Description of the Related Art A door member which can be easily opened and closed selectively without using a tool or the like for maintenance and inspection of the electronic device is rotatable at an opening end in a housing for housing the electronic device. It is provided in. Between the door member and the housing,
A lock device is provided for selectively fixing the door member to an open end thereof. The lock device is, for example, as shown in Japanese Utility Model Publication No. 5-27650,
An engaged portion is provided on the periphery of the opening end of the housing covered by the door, and a support member having a rectangular cross section is provided on the inner surface side portion of the door as a lid. An engagement member disposed inside the member and rotatably supported by the support member and selectively engaged with the engaged portion, and holding an engaged state between the engagement member and the engaged member; Alternatively, a lock lever member to be released and disengaged, and an operation of rotating the lock lever member through a through hole provided in the door to disengage the engaged member and the engaged member. It is configured to include a member and a coil spring for rotating the engaging member so that the engaging member and the engaged member are disengaged according to the operation of the operating member.

[0003] With this configuration, when the door is closed with respect to the opening end of the housing, when the operating member is operated, the lock lever member is pressed by the operating member to move in one direction. It is turned. As a result, the engaging member is rotated in one direction by the urging force of the coil spring to be disengaged from the engaged portion of the housing, and the door is automatically opened to the opening end of the housing. State.

[0004]

In a case for housing an electronic device, it may be necessary to arrange an instrument or the like on a door provided with the above-described lock device in relation to the electronic device. In such a case, it is desired to minimize the area occupied by the lock device in the door in order to secure a place where the instrument, the switch device, and the like are arranged.

However, the above-described locking device has a complicated configuration including an operating member, a coil spring, a support member having a rectangular cross section, and the like, so that it is not easy to reduce the size. When the locking device is provided on one side of the door facing the pivot axis of the door, it is desired that the size of the door along the width direction be smaller.

In view of the above problems, the present invention relates to a door lock device for a housing in which a door member that can be selectively opened and closed with respect to an opening in the housing is fixed to the housing. It is an object of the present invention to provide a lock device for a door of a housing which has a simple structure and can be easily reduced in size.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, a door lock device for a housing according to the present invention is provided on a cover which is selectively opened and closed with respect to an opening in the housing. A mating member, an engaged member disposed opposite to the engaging member on an inner peripheral portion of the housing, and an engaged member selectively engaged with the engaging member when the lid is in a closed state; and an inner surface portion of the lid. An operating portion provided to face the engaged member and protruding to the outside through the through hole of the lid, and when the engaging member is engaged with the engaged member, the engaging member is When the operating member is operated and the engaging member is disengaged from the engaged member, the engaging member is released from the engaged member. And a lock lever member.

Further, the lock lever member formed in a flat shape may have an operation portion projecting outside through a slit-shaped through hole in the lid.

Further, the engaged member may be a holding member provided at a position along a side end of the opening in the inner peripheral portion of the housing, and the engaging member may be an engaging pin.

[0010]

5 and 6 show the appearance of a housing provided with an example of a door locking device for a housing according to the present invention.

The housing 2 includes side portions 4A and 4B forming both side surfaces, a bottom portion 16 connected to lower ends of the side portions 4A and 4B to form a bottom portion, and upper ends of the side portions 4A and 4B. Connecting parts 6 to be connected respectively
A and 6B, and a top plate 6 which is disposed between the connecting portions 6A and 6B and forms a ceiling.

In the front portion of the housing 2, a door member 12 as a lid is provided at an opening end formed by the connecting portion 6A, the side portions 4A and 4B, and the bottom portion 16. ing. Further, a back cover member 14 is provided on a back portion of the housing 2 at an opening end formed by the connection portion 6B, the side portions 4A and 4B, and the bottom portion 16.

At the center of the side portions 4A and 4B, there are provided supporters 8 each supporting the housing 2 and having an L-shaped cross section.
A and 8B are arranged opposite to each other near the lower end.

Further, bracket members 10A and 10B for fixing the housing 2 at predetermined positions are arranged opposite to each other in front of the side surface portions 4A and 4B. At one end surface of the bracket members 10A and 10B having an L-shaped cross section, which are flush with the front surface of the door member 12, a mounting hole 1 into which a fixing bolt is inserted is provided.
0a and 10b are provided. Bracket member 1
In the upper part of the inner surface side portions of 0A and 10B, FIG.
As shown in FIG. 7 and FIG. 7, when a door member 12 to be described later is in a closed state, a door receiving member 24 to which an inner surface portion thereof abuts is provided to be opposed to each other and fixed by screws. .

As shown in FIG. 7, the back cover member 14 is rotatably supported by support shafts 14s provided at the lower ends of the side surfaces 4A and 4B. As a result, as shown by the solid line in FIG. 7, the rear cover member 14 moves from the closed state to the open end of the housing 2 to the open end of the housing 2 around the support shaft 14s in FIG. As shown by the dashed line, it will be in the open state.

Also, at the upper end of the back cover member 14,
A pair of projecting members 14c are provided. The protruding member 14c selectively cooperates with the support receiving portions (not shown in FIG. 7) provided on the side portions 4A and 4B to selectively move the back cover member 14 to the opening end of the housing 2. In contrast, the closed state is maintained, and the open end of the housing 2 is opened as shown by a two-dot chain line in FIG.

Provided on the inner surface of the bottom portion 16 is a support base 18 for supporting electrical components housed in the housing 2, for example, a printed board group 20 in which a plurality of printed boards are stacked.

In the front surface of the door member 12, slit-shaped notches 12A and 1 having predetermined lengths and widths are provided at positions along support surfaces of support members 26A and 26B described later.
2B is formed.

As shown in FIGS. 3 and 6, support members 26A and 26B are respectively provided on the inner surfaces of both ends of the door member 12 so as to extend along the short side of the open end of the housing 2. I have. As shown in FIG. 5, for example, an instrument unit 52 is fixed between the support member 26A and the support member 26B on the inner surface side of the door member 12. As shown in FIG. 7, the supporting members 26A and 26B respectively have the instruments disposed on the printed circuit board group 20 and the door member 12 when the door member 12 is opened with respect to the open end of the housing 2. Door member 12 to reduce the wiring to
Slide holding mechanism portions 28A and 28B are provided for holding in a state of being separated frontward from the opening end of the slide holding mechanism. Since the slide holding mechanisms 28A and 28B have the same structure, the slide holding mechanism 28B
And only the slide holding mechanism 28A will be omitted.

As shown in FIGS. 3, 4, and 7, the slide holding mechanism 28B is relatively rotatably connected to the lower end of the support member 26B of the door member 12 by the connecting screw 22. Slide rail member 30 and a guide groove 32a for guiding an outer peripheral portion of the slide rail member 30
And a base 34 disposed between one end face of the guide member 32 and the inner surface of the bracket member 10B in the housing 2 and fixed to the bracket member 10B with screws.

The slide rail member 30 has an elongated hole 30a extending in the front-rear direction of the housing 2. Further, as shown by a two-dot chain line in FIG. 7, the stopper member 36 which penetrates the elongated hole 30a and is fixed to the base 34 is engaged with one end of the elongated rail 30a. The falling off of the guide member 32 from the guide groove 32a is regulated. Accordingly, when the door member 12 is opened with respect to the opening end of the housing 2, the door member 12 is moved forward after the slide rail member 30 is guided along the guide groove 32a. The stopper member 36 is engaged with one end of the long hole 30a. Then, in a state where the door member 12 is separated from the opening end of the housing 2, the door member 12 is turned clockwise with respect to the slide rail member 30 so as to be in a state shown by a two-dot chain line in FIG. Be moved.

In addition, lock devices 40A and 40B for selectively fixing the door member 12 to the open end of the housing 2 are provided on the inner surfaces of both ends of the door member 12, respectively. The locking devices 40A and 40B are both
Since the structure is the same, the lock device 40B will be described and the description of the lock device 40A will be omitted.

As shown in FIGS. 2 and 3, the lock device 40B has an engagement portion 44a and a lock lever member 44 rotatably supported by a support shaft 46 of the support member 26B of the door member 12. When the lock lever member 44 is rotated as shown by the solid line in FIG.
An engagement pin 42 provided substantially perpendicular to the support surface at a position corresponding to the engagement portion 44a in a lower portion of the support shaft 46, and a base at a position corresponding to the engagement pin 42 on the inner surface of the bracket member 10B. And a catch member 48 as an engaged member fixed to the inner surface of the bracket member 10B with the screw BS via the pin 50.

As shown in FIG. 3, the lock lever member 44 is made of, for example, a thin steel plate in a flat plate shape, and has a thickness smaller than the width of the cutout portion 12B on the front surface of the door member 12. I have. The lock lever member 44 is provided with a through hole 44c in the upper part of which the support shaft 46 is inserted. A notch 12 is provided in a portion of the lock lever member 44 closer to the front surface of the door member 12 than in a portion where the through hole 44c is provided.
A projection 44b protruding to the outside via B is provided. An engagement portion 44a, which is, for example, a U-shaped depression, is formed below the portion of the lock lever member 44 where the through hole 44c is provided. Engaging portion 44
The width and depth along the vertical direction of a
A catch member 4 which faces the lock lever member 44 and will be described later.
8 has substantially the same length as the height and width of the holding portion 48A.

The catch member 48 is made of a resin material, for example,
It is formed into a plate shape with a polyacetal resin material. The catch member 48 is connected to the support member 26 as shown in FIG.
B, a gripper 48A engaged with the engagement pin 42;
And a fixing portion 48B fixed to the base 50 by a screw BS. The grip portion 48A has an arc portion 48a with which the engagement pin 42 is engaged. A part of the arc portion 48a is smaller than the diameter of the engaging pin 42, has a cutout into which the engaging pin 42 is inserted, and is connected to a slit portion 48b provided in the fixing portion 48B.

As a result, the engaging pin 42 is
When it is inserted into the notch and is engaged with the arc portion 48a, the forked grip portion 48A is once expanded and then returns to its original state by its elastic force to grip the engagement pin 42. Will be done. On the other hand, the engagement pin 42 is
Moves forward along with the arc portion 4 of the grip portion 48A.
8, the grip portion 48A is
Similarly, after being once expanded, it returns to the original state by its elastic force.

As shown in FIGS. 2 and 4, the fixing portion 48B is provided on a through hole 48c into which the screw BS is inserted on a virtual straight line common to the slit portion 48b, and on a mutual contact surface of the base 50. Projection 48 engaged with the recess formed
d is provided.

With this configuration, the lock lever member 4
As shown by the solid line in FIG. 2, when the engaging portion 44a of the lock lever 40 is engaged with the grip portion 48A of the catch member 48, the locking device 40B is locked, while the engaging portion of the lock lever member 44 is engaged. As shown by a two-dot chain line in FIG. 2, when the catching member 48A is separated from the grip portion 48A, the lock device 40B is unlocked.

Therefore, when the door member 12 changes from the closed state to the open state with respect to the open end of the housing 2, the lock devices 40A and 40B are changed from the locked state to the unlocked state.

That is, the engaging portion 44 of the lock lever member 44
As shown by the solid line in FIG. 2A, under the state of being engaged with the grip portion 48A of the catch member 48, first, the projection portion 44b of the lock lever member 44 as a part of the operation portion is moved to the position shown in FIG. As shown by a two-dot chain line, when pressed in the counterclockwise direction, the engaging portion 44a of the lock lever member 44 is disengaged from the grip portion 48A of the catch member 48, and A part of the lock lever member 44 projects outside through the slit portions 12A and 12B.

Next, as shown in FIG. 8A, a part of the lock lever member 44 projecting outside through the slits 12A and 12B is further rotated as shown in FIG. A part of the protruding lock lever member 44 is pulled in a direction indicated by an arrow F in FIG. As a result, the grip portion 48A of the catch member 48 is pushed out and the engaging pin 42 is moved to the grip portion 48A of the catch member 48.
Begins to withdraw.

When a part of the lock lever member 44 protruding to the outside is further pulled, the lock lever member 44 shown in FIG.
As shown in (2), the engagement pin 42 is disengaged from the arc portion 48a of the grip portion 48A. As a result, the lock devices 40A and 40B are changed from the locked state to the unlocked state.

Thereafter, as shown in FIG. 1, the slide rail member 30 is slid along the guide groove 32a of the guide member 32 to separate the door member 12 from the open end of the housing 2 and to close it. It changes from the state to the open state.

Subsequently, the slot 3 of the slide rail member 30
When the stopper member 36 is engaged with one end of the slide rail member 30 and the inclined surface at the rear end of the slide rail member 30 protruding from the open end of the housing 2 is engaged with the guide groove 32a, FIG. As shown by the dashed line, the tip of the slide rail member 30 is tilted obliquely downward, and the door member 12 is rotated with respect to the slide rail member 30 about the axis of the connection screw 22. Become.

When the door member 12 changes from the open state to the closed state with respect to the open end of the housing 2, the lock device 40A
And 40B are changed from the unlocked state to the locked state. In such a case, first, contrary to the above, the slide rail member 30 is
The other end of Oa is slid along the guide groove 32a of the guide member 32 until the other end of the Oa is engaged with the stopper member 36. Next, the door member 12 is rotated counterclockwise in FIG. 1 with respect to the slide rail member 30 about the axis of the connection screw 22. Subsequently, as shown in FIG.
By further rotating the engagement pin 42, the engagement pin 42 is engaged with the grip portion 48 </ b> A of the catch member 48. Then, the lock lever member 44 is rotated clockwise about the axis of the support shaft 46 toward the grip portion 48A of the catch member 48 in FIG.

Thus, the engaging portion 44a of the lock lever member 44 is connected to the catch member 4 with which the engaging pin 42 is engaged.
The lock devices 40A and 40B are locked by being engaged with the outer peripheral portion of the holding portion 48A of the lock 8.

Accordingly, since the lock lever member 44 and the catch member 48 are formed in a flat plate shape, the both sides of the door member 12, which is a relatively narrow space, are effectively used to arrange the lock devices 40A and 40B. It will be. As a result, the lock devices 40A and 40B can be provided for different types of housings, and standardization of the lock devices 40A and 40B is promoted.

A projection 44b as a part of the operation unit
Are formed integrally with the lock lever member 44, so that the configurations of the lock devices 40A and 40B are simplified.

Further, the protrusions 44b projecting through the slits 12A and 12B are operated and the lock lever member 44 is pulled, so that the lock devices 40A and 40B can be easily unlocked without using components such as coil springs. It will be in a state.

In the above example, the door member 12
Has a lower end rotatably supported,
Without being limited to such an example, the door member may be of a so-called front side laterally opened one side end portion of which is rotatably supported.

[0041]

As is apparent from the above description, according to the lock device for a door of a housing according to the present invention, the lock lever member is provided on the inner surface of the lid so as to face the engaged member. An operating portion protruding to the outside through the through-hole of the body, and when the operating portion is operated and the engaging member is disengaged from the engaged member, the engaging member is moved to the engaged member. Since the lock device is in the released state, the configuration of the lock device is simple, and the size can be easily reduced.

In the case where the lock lever member formed in a flat plate has an operating portion projecting outside through a slit-shaped through hole in the lid, the area occupied by the lock device in the lid is relatively small. It has the advantage that it can be.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing an essential part of an example of a door locking device for a housing according to the present invention, together with a housing provided with the same.

FIG. 2 is a partial cross-sectional view showing a main part of an example of a lock device for a door of a housing according to the present invention.

FIG. 3 is a front view of the example shown in FIG. 2;

FIG. 4 is a front view of the example shown in FIG. 2;

FIG. 5 is a plan view showing the appearance of a housing provided with an example of the door lock device for the housing according to the present invention.

FIG. 6 is a front view of the appearance of the housing shown in FIG. 5;

FIG. 7 is a sectional view showing the inside of the housing shown in FIG. 5;

FIGS. 8A, 8B, and 8C are views for explaining the operation of an example of the lock device for a door of a housing according to the present invention.

[Explanation of symbols]

 2 Housing 12 Door member 12A, 12B Slit part 42 Engagement pin 44 Lock lever member 44b Projection part 48 Catch member 48A Grip part

Claims (3)

[Claims] An engaging member provided on a lid that selectively opens and closes with respect to an opening in a housing; and an inner peripheral portion of the housing disposed opposite to the engaging member, the lid being closed. When the state is taken, an engaged member selectively engaged with the engaging member, and an inner surface portion of the lid is provided to face the engaged member through a through hole of the lid. When having an operating portion projecting to the outside, the engaging member is engaged with the engaged member,
When the engaging member is in a fastening state with respect to the engaged member, and when the operating portion is operated to disengage the engaging member with the engaged member, the engaging member is A lock device for a door of a housing, comprising: a lock lever member that is released from an engaged member. 2. The door for a housing according to claim 1, wherein the lock lever member formed in a flat plate shape has an operation portion projecting outside through a slit-shaped through hole in the lid. Locking device. 3. The engaging member is a catch member provided at a position along a side end of an opening in an inner peripheral portion of the housing, and the engaging member is an engaging pin. The lock device for a door of a housing according to claim 1.