JPH08148853A - Door stay lock mechanism - Google Patents

Abstract

PURPOSE: To enable a door to be locked in excellently both in opened and clothed attitude by a method wherein, an end part of a bent stay is engaged with a hole in a horizontal bracket while the other end part is slidably engaged with a guide notch while a lock parts bent in an acute angle shape are formed proper positions in a guide notch. CONSTITUTION: The locking mechanism of door stay is provided with a long slit guide notch 30 formed through a stay fitting plate 26, a bracket 31 horizontally protruding on upper part proper position of a door 22 and a metallic bar stay 32 with both end parts bent in almost Z shape. One end 32a of the stay 32 is engaged with a hole 31a made in a bracket 31 on the door side while the other end 32b is slidably engaged with the guide notch 30. The guide notch 30 is linearly formed in the long direction of the fitting plate 26 centered on the circular stay fitting hole 35 positioned on the central part on whose both end parts, lock parts 36, 37 respectively bent in an acute angle shape are communicatively formed. In such a constitution, when the stay 32 is closed, the other end 32b can not reach the hole 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door stay for locking a door, which is pivotally supported by a hinge with respect to a main body of a device such as a housing, to the main body in a closed position and a predetermined open position. Related to the locking mechanism.

[0002]

2. Description of the Related Art Various electric and electronic devices include those having a structure in which a door (door) is pivotably supported with respect to a device body such as a casing, and such a device has a door. In order to perform the necessary processing (adjustment, maintenance, etc.) on the operating parts, units, parts, etc. that are exposed when opened, various locking means are used to maintain the door in the open position and to maintain the opening angle constant. It is provided. 2A and 2B are an external view and an enlarged view of a main part showing a conventional door lock mechanism. The door 2 is openable and closable by a hinge 3 on the open side of the apparatus body 1 such as a housing. It is pivotally supported. Reference numeral 4 is a door lock mechanism that regulates the opening angle of the door 2.

The door lock mechanism 4 connects the main body bracket 5 having an L-shaped cross section fixed to the ceiling on the main body 1 side, the door bracket 6 provided on the upper side of the door 2 side, and the two brackets 5, 6 together. The stay 7 includes both ends 7a of the stay 7,
7b has a configuration bent 90 degrees in the same direction. Holes 5a and 6a are formed in the brackets 5 and 6, respectively.
The ends 7a and 7b of the stay 7 can be fitted to the a and 6a, respectively. Since the hole 5a is formed on the vertical surface of the main body side bracket 5, one end 7a of the stay can move relative to the bracket 5 as shown by the dotted line in accordance with the opening / closing operation of the door 2, and the door is opened. When the door is closed, the limit of the opening operation is set (locked), while the end 7a of the stay can be retracted as shown by the dotted line when the door is closed. However, this conventional door lock mechanism can be locked only when the door is opened.

Next, FIGS. 3A and 3B show brackets 10 and 11 horizontally projected from the upper portions of the main body 1 and the door 2.
Stay 12 with both ends bent into holes 10a and 11a provided in
The door is locked in an open state by manually inserting and attaching both ends of the stay, and the stay 12 must be removed manually when the door is closed. However, it is inconvenient to attach and detach manually, and there is only one opening angle.

Next, referring to FIG. 4, a plurality of links 15 are connected to pin 1
In this example, the links are locked both when the door is closed and when the door is open. Therefore, it is possible to maintain that attitude not only in the open position but also in the closed position, but the structure is complicated and large. Therefore, there are restrictions on the devices that can be assembled,
It is also expensive.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and locks a door stay pivotally supported by a hinge with respect to an apparatus body such as a housing in a predetermined open posture with respect to the body. It is an object of the present invention to provide a lock mechanism for a door stay that can lock the door not only in the open position but also in the closed position without inviting a complicated structure, an increase in size, and an increase in cost.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is arranged so as to be connected between a housing body and a door pivotally supported to the housing body so as to open and close the door. A lock mechanism that locks in different postures, and the lock mechanism has slit-shaped guide cutouts formed through the ceiling plate of the housing, horizontal brackets provided at appropriate positions on the door, and both end portions are different. A stay bent in the same direction, one end of the stay bent is fitted in a hole provided in the horizontal bracket, and the other end of the stay bent is slidably fitted in the guide notch. The slit-shaped guide notch has a lock portion formed at an appropriate position by bending the slit into an acute angle.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1A is a perspective view showing a housing structure of an electronic device or the like to which the present invention is applied, and FIG. 1B is a front vertical sectional view of a part thereof. This housing structure can be applied to any electronic device, electric device, storage cabinet, and the like as long as it has a box-like shape having a door that opens and closes with respect to the main body. This housing has a configuration in which a door 22 is pivotably supported by a hinge 21 arranged along one vertical side of the opening side of a main body 20 having an open front surface, and a door stay lock mechanism 23 is used to open and close the door 22. 22 is configured to be locked in the closed position and the open position. This housing body 20
The ceiling plate has a double structure of two upper and lower sheets, and another ceiling plate, that is, a stay mounting plate 26 is fixed in parallel with the original ceiling plate 25 at a predetermined interval in parallel. .

The lock mechanism 23 for the door stay has a long slit-like guide notch 30 formed through the stay mounting plate 26, a bracket 31 horizontally projected at an appropriate position above the door 22, and a substantially Z-shape. And a stay 32 which is a metal rod whose both ends are bent in a circular shape. One end 32 of stay 32
a is fitted in a hole 31a provided in the bracket 31 on the door side, and the other end 32b is slidably fitted in the guide notch 30. One end 32a of the stay fitted in the hole 31a
Is bent into an acute angle to prevent it from falling out of the hole, and the other end 32b is prevented from falling off by the washer 33 and the split pin 34. The guide notch 30 extends linearly along the longitudinal direction of the mounting plate 26 centering on a circular stay mounting hole 35 located at the center, and at both ends, lock portions 36 each bent at an acute angle are formed. , 37 are formed so as to communicate with each other. The washer 33 and the split pin 34 form a falling-out prevention member. Instead of providing a washer or the like, a flange having the same function as the washer may be integrated with the other end of the stay.

The stay mounting hole 35 is previously provided with the washer 3
The other end portion 32 of the stay 32 in which 3 is fixed to the other end portion 32b
It has a diameter suitable for inserting b from below. When mounting the stay, the other end 32b having the washer 33 is inserted from the mounting hole 35, and then the stay is slid along the guide notch 30 in the direction of the arrow A so that the other end 32b is fixed. When the position is reached, the one end 32a is inserted into the hole 31a of the bracket 31 of the door 22 from above. In this way, the attachment of the stay is completed. When the other end 32b of the stay reaches the stay mounting hole 35 when the door is closed with respect to the main body,
Since the other end 32b slips out of the hole 35 every time the door is closed, the length of the stay is the other end 32b when the door is closed.
Is set at a position that does not reach the hole 35.

In the present embodiment, a guide notch extending in the direction indicated by arrow B is also provided on the opposite side of the stay mounting hole 35. This is the position of the hinge 21 opposite to the illustrated position. The guide notch portion extending in the B direction beyond the hole 35 may be omitted if such provision is unnecessary.

Further, when it is desired to lock the door by using the stay when the door is closed, the lock portion as indicated by reference numeral 38 may be formed so as to communicate with the guide notch 30. Needless to say, the lock portion 38 is on the front side of the stay mounting hole 35.

The lock portion may be provided at a position other than the above, and by providing it at any position, the door can be locked at any open position.

In the above construction, when it is desired to lock the closed door in a predetermined open posture, the other end 32b slides in the guide notch in the direction A along with the operation of opening the door. Therefore, when the other end reaches the terminal end, the other end 32b of the stay 32 is manually operated to lock the lock portion 36.
It should be put in the seat and seated at the back end. Similarly, when locking in the closed state, the other end 32b
It suffices to insert and lock the lock portion 38.

With such an extremely simple structure, since the locking can be surely performed when the door is opened and closed, the cost can be reduced.

In the above embodiment, the ceiling plate has a double structure, but this is for preventing the deterioration of the external appearance and for preventing the ingress of dust, rainwater, etc., and therefore, it is used in such an environment in which there is no need to worry. In the case of such a housing, the ceiling plate does not need to have a double structure.

[0017]

As described above, according to the present invention, the door stay, which is pivotally supported by the hinge to the main body of the apparatus such as the housing, is locked to the main body in a predetermined open posture. In the door stay locking mechanism, the door can be functionally locked not only in the open position but also in the closed position without inviting a complicated structure, an increase in size, and an increase in cost.

[Brief description of drawings]

FIG. 1A is a perspective view showing a casing structure of an electronic device or the like to which the present invention is applied, and FIG. 1B is a front vertical sectional view of a part thereof.

2A and 2B are explanatory views of a conventional example.

FIG. 3A and FIG. 3B are explanatory views of another conventional example.

FIG. 4 is an explanatory view of another conventional example.

[Explanation of symbols]

20 main body, 21 hinge, 22 door, 23 door stay lock mechanism, 25 ceiling plate, 26 stay mounting plate,
30 guide notch, 31 bracket, 31a hole, 3
2 stay, 32a one end, 32b other end, 33 washer, 34 pin, 35 stay mounting hole, 36, 3
7, 38 Lock part.

Claims (1)

[Claims] 1. A lock mechanism connected between a housing body and a door pivotally supported on the housing body to lock the door in an open position and a closed position, respectively. The lock mechanism includes a slit-shaped guide cutout formed through the ceiling plate of the housing, a horizontal bracket provided at an appropriate position on the door, and stays with both ends bent in different directions. The bent one end of the stay is fitted in the hole provided in the horizontal bracket, and the bent other end of the stay is slidably fitted in the guide notch, and the slit-shaped guide notch is placed at an appropriate position. A lock mechanism for a door stay characterized in that a lock portion is formed by bending the slit into an acute angle.