JP3106860B2 - Door opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening and closing device for opening and closing a door of a switchboard, a control panel or the like.

[0002]

2. Description of the Related Art A conventional door opening / closing device has the structure shown in FIG. In the figure, 1 is a housing such as a switchboard, a control panel, etc., 2 is a locking hole which is provided in the upper frame 3 and the lower frame 4 of the housing 1 respectively, and 5 is pivotally supported on one side of the housing 1. 6, a bearing provided on the door 5, 7 a handle rotatably provided on the bearing 6, 8 a rotating plate having a central portion integrally fixed to a rear end of the handle 7, 9 an upper side , The lower two locking rods, the base of which is connected to the right and left portions of the rotating plate 8, and the distal end of which is inserted and locked in the upper and lower locking holes 2.

Next, the opening and closing operation of the door 5 will be described. When the door 5 is opened from the closed state of the door shown by the solid line in FIG. 6, when the handle 7 is turned clockwise, the turning plate 8 turns clockwise,
The upper locking bar 9 moves down, the lower locking bar 9 moves up, and the distal ends of the both locking bars 9 are detached from the locking holes 2 respectively. In this state, the user pulls the handle 7 to open the door 5.

Next, when the door 5 is closed, the door 5 is closed while the handle 7 is rotated clockwise, and when the handle 7 is rotated counterclockwise, the upper locking bar 9 moves upward, and the lower locking bar 9 is rotated. 9 moves downward, and the front ends of both locking rods 9 are inserted into the two locking holes 2 and locked.

Next, another conventional door opening and closing device has a configuration shown in FIG. 6, the same reference numerals as those in FIG. 6 denote the same or corresponding elements, and different points are as follows.

A support shaft 1 is provided at an upper portion and a lower portion of the rear surface of the door 5, respectively.
0 is provided with a locking rod 11 whose center is pivotally supported.
1 are connected to the upper and lower locking rods 9, and the bases of the upper and lower locking rods 9 are connected to the left and right sides of the rotating plate 8. Key 1 at the tip of 11
2 can be freely locked in the locking holes 2 respectively.

When the door 5 is opened, as in FIG.
When the handle 7 is rotated clockwise, the upper locking bar 9 moves upward, the lower locking bar 9 moves downward, and as shown by the chain line in FIG. It comes off from the stop hole 2. In this state, pull the handle 7 toward you.

Next, when closing the door 5, the door 5 is closed while the handle 7 is rotated clockwise, and when the handle 7 is rotated counterclockwise, the upper locking bar 9 moves down, and the lower locking bar 9 is rotated. 9 moves upward, and the key portions 12 of both locking rods 11 are locked in the locking holes 2.

[0009]

In the conventional apparatus shown in FIGS. 6 and 7, when the door 5 is closed, the lock is not automatically activated, so that it is necessary to manually lock the door 5, which is complicated.
Furthermore, when the device inside the housing 1 is operated with the door 5 opened, the protrusions of the locking rods 9 and the hooks 12 of the locking rods 11 protrude from the back surface of the door 5, so that they are obstructive. Become damaged. In addition, the locking bar 9 and the hook 12 of the locking bar 11
And the handle 7 protrudes from the front surface of the door 5, there is a problem that the appearance is impaired.

In the present invention, the above point is taken into consideration, and when the door is closed, the door is automatically locked, the number of protrusions protruding from the door is reduced, and the operation of the device in the housing is not hindered.
It is another object of the present invention to provide a door opening / closing device that improves aesthetic appearance.

[0011]

In order to solve the above-mentioned problems, a door opening / closing device according to the present invention comprises a lock pin and a boss protruding at positions above and below a front surface of a housing, and a small diameter of the lock pin. A large-diameter part formed at the tip of the part, a door that opens and closes the housing,
A slide bar movably provided on the door, a handle for moving the slide bar up and down, a large hole penetrating the slide bar, the large-diameter portion is freely movable in and out, and the small-diameter portion is freely penetrable. Formed at the leading end of the positioning pin, a positioning pin provided to be able to enter and exit the door and to be able to contact the boss, a spring for biasing the positioning pin in the direction of extension, A small-diameter shaft, a large-diameter shaft formed at the base of the positioning pin, a large hole penetrating through the slide bar, where the large-diameter shaft is located, and a small hole through which the small-diameter shaft can be inserted. It is provided with a harbor hole.

[0012]

The door opening / closing device of the present invention constructed as described above has a lock pin and a boss protruding at positions above and below the front surface of the housing, and is provided on a door with a slide bar which can move up and down. The daruma hole and the daruma hole for release are penetrated, and the large diameter part at the tip of the small diameter part of the lock pin can freely enter and exit the large hole of the daruma hole for locking, and the small diameter part is the small hole of the daruma hole for locking. The small diameter shaft at the tip of the positioning pin provided so that it can be freely inserted through the door, comes in and out of the door, and comes into contact with the boss. In this state, the large-diameter shaft at the base of the positioning pin is located in the large hole of the release Daruma hole.When the door is closed, first, the large diameter portion of the lock pin is inserted into the large hole of the locking Daruma hole. At the same time, the small diameter shaft of the positioning pin contacts the boss.

Next, when the positioning pin retreats and the large-diameter shaft of the positioning pin separates from the large hole of the release ball hole, the small diameter portion of the lock pin is positioned in the large hole of the locking ball hole. When the large-diameter shaft is disengaged, the slide bar moves down, the small-diameter portion of the lock pin locks in the small hole of the locking daruma hole, and the small-diameter shaft of the positioning pin locks in the small hole of the releasing daruma hole. . That is, when the door is closed, it is automatically locked.

Next, when the door is opened, when the slide bar is moved upward with the handle, the small hole of the locking ball hole is separated from the small diameter portion of the lock pin, and the small hole of the releasing ball hole is positioned. Detach from the small diameter shaft of the pin. And
When the door is pulled forward with the slide bar moved up, the positioning pin is urged in the direction of extension by a spring with the small diameter shaft of the positioning pin abutting on the boss, and the large diameter shaft of the positioning pin is released. The large diameter part of the lock pin is located at the large hole of the locking daruma hole, and the lock pin is located at the large hole of the locking daruma hole. At the same time, the small-diameter shaft of the positioning pin separates from the boss, the large-diameter shaft of the positioning pin is locked by the large hole of the release daruma hole, and the state in which the slide bar is moved upward is maintained.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment will be described with reference to FIGS. In these figures, the same symbols as those in FIGS. 6 and 7 indicate the same or corresponding elements. Reference numeral 13 denotes lock pins projecting from the upper frame 3 and the lower frame 4 of the housing 1, respectively.
Is a small diameter portion formed at the tip of the lock pin 13, 15 is a large diameter portion formed at the tip of the small diameter portion 14, 16 is a boss projecting below the lock pin 13 of the upper frame 3, and 17 is a door. Insertion holes formed in the upper and lower portions of the rear surface of the door 5, respectively, 18 are through holes formed below the upper insertion hole 17, and 19 is a through hole formed substantially in the center of the left side surface of the door 5. .

Reference numeral 20 denotes a plurality of guide plates provided on the rear surface of the door 5, and reference numeral 21 denotes a guide hole formed in the guide plate 20;
2 has a hollow portion 23 and is a guide fitting disposed below the upper guide plate 20; 24 and 25 are large-diameter and small-diameter insertion holes formed on the front and rear surfaces of the guide fitting 22, respectively.
Reference numeral 6 denotes a slide bar inserted through the guide hole 21 and the hollow portion 23, and is provided to be vertically movable along the guide hole 21. Reference numeral 27 denotes an extension rod extending from the left side edge of the slide bar 26 and loosely inserted into the through hole 19. Reference numeral 28 denotes a handle fixed to the extension rod 27 and moving the slide bar 26 up and down.

Reference numeral 29 denotes a locking ball extending from the upper and lower portions of the slide bar 26, and 30 denotes a lock pin 1
3 is a large hole of the locking ball hole 29 through which the large-diameter portion 15 is freely inserted and removed, 31 is a small hole of the locking ball hole 29 through which the small-diameter portion 14 of the lock pin 13 is inserted freely, 32 Are provided below the locking ball hole 29, and the large hole 33 and the small hole 3
4 is a release Daruma hole consisting of

Reference numeral 35 denotes a positioning pin provided in the hollow portion 23 of the guide fitting 22 so as to be movable back and forth. Reference numeral 36 denotes a large-diameter shaft formed at the base of the positioning pin 35 and inserted into the large-diameter insertion hole 24. This is a small-diameter shaft formed at the tip of the positioning pin 35, inserted into the through hole 18 and the small-diameter insertion hole 25, and is in contact with the boss 16. 38 is a positioning pin 35
The spring is provided on the large-diameter shaft 36 and biases the positioning pin 35 in the protruding direction.

Next, the opening / closing operation of the door 5 will be described. First, when the door 5 is closed, in the open state of the door 5, as shown in FIG. 3, the large-diameter shaft 36 of the positioning pin 35 is located in the large hole 33 of the release ball hole 32. 5 is closed, as shown in FIGS. 4 and 5, the large-diameter portion 15 of the lock pin 13 is engaged with the large hole 30 of the locking ball hole 29.
And the small diameter shaft 37 of the positioning pin 35 contacts the boss 16.

Next, when the door 5 is pushed, the positioning pins 35 are pressed.
Retracted against the spring 38, the large diameter shaft 36 of the positioning pin 35 is disengaged from the large hole 33 of the releasing potbelly holes 32, the large hole 3 smaller diameter portion 14 of the locking potbelly holes 29 of the lock pin 13
When the large-diameter shaft 36 is disengaged, the slide bar 26 moves down as shown in FIGS. 1 and 2, and the small-diameter portion 14 of the lock pin 35 is inserted into the small hole 31 of the locking burring hole 29. Located
The large diameter portion 15 is locked in the small hole 31, the small diameter shaft 37 of the positioning pin 35 is located in the small hole 34 of the release ball hole 32, and when the door 5 is closed, the large diameter portion 15 of the lock pin 13 Small hole 31
To lock automatically.

Next, when the door 5 is opened, when the slide bar 26 is moved upward while holding the handle 28, the locking daruma hole 2 is opened.
Nine small holes 31 are separated from the small-diameter portion 14 of the lock pin 13, and the small holes 34 of the release ball hole 32 are separated from the small-diameter shaft 37 of the positioning pin 35. When the door 5 is pulled forward with the slide bar 26 moved upward, as shown in FIGS. 4 and 5, the positioning pin 35 is brought into contact with the small diameter shaft 37 of the positioning pin 35 in contact with the boss 16. Spring 3
8, the large-diameter shaft 36 of the positioning pin 35 is located in the large hole 33 of the release ball hole 32, and the large-diameter portion 15 of the lock pin 13 is locked in the locking ball hole 2.
When the door 5 is further pulled forward, as shown in FIG. 3, the lock pin 13 is separated from the large hole 30 of the locking ball hole 29 and the positioning pin 35 is closed. The small-diameter shaft 37 is detached from the boss 16, the large-diameter shaft 36 of the positioning pin 35 is engaged with the large-diameter hole 33 of the release ball hole 32, and the state where the slide bar 26 is moved upward is maintained.

[0022]

Since the present invention is configured as described above, it has the following effects. In the door opening / closing device of the present invention, the lock pins 13 are protruded at positions above and below the front surface of the housing 1 and the holes 16 are protruded at positions above the front surface of the housing 1. , A slide bar 26 that can move up and down on the door 5
A locking ball hole 29 and a releasing ball hole 32 are formed through the large diameter portion 15 of the small diameter portion 14 of the lock pin 13 so that the large diameter portion 15 can freely enter and leave the large hole 30 of the locking ball hole 29.
The small-diameter portion 14 is inserted through the small hole 31 of the locking ball hole 29 so as to be freely inserted into and out of the door 5, and the small-diameter shaft 37 at the distal end of the positioning pin 35 provided so as to be able to contact the boss 16.
Is inserted through the small hole 34 of the release ball hole 32 so as to be freely inserted,
With the door 5 open, the large-diameter shaft 36 at the base of the positioning pin 35
Is made to be able to enter and exit the large hole 33 of the release ball hole 32, so that when the door 5 is closed, it can be automatically locked.

Furthermore, the number of protrusions protruding from the door 5 can be reduced, and the operation of the device in the housing 1 can be performed without any trouble.
In addition, the appearance can be improved.

[Brief description of the drawings]

FIG. 1 is a cut-away left side view of one embodiment of the present invention.

FIG. 2 is a sectional view taken along line CC of FIG.

FIG. 3 is a partially enlarged view of another state of FIG. 1;

FIG. 4 is an enlarged view of a part of still another state of FIG. 1;

FIG. 5 is a sectional view taken along line DD of FIG. 4;

6A and 6B are a cut right side view and a partially cut front view of a conventional example.

FIG. 7 is a partially cut right side view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 5 Door 13 Lock pin 14 Small diameter part 15 Large diameter part 16 Boss 26 Slide bar 28 Handle 29 Daruma hole for locking 30 Large hole 31 Small hole 32 Daruma hole for release 33 Large hole 34 Small hole 35 Positioning pin 36 Large Diameter shaft 37 Small diameter shaft 38 Spring

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02B 1/30-1/38 H05K 5/03

Claims (1)

(57) [Claims] A lock pin protruding above and below the front surface of the housing, a boss protruding above the front surface of the housing, and a small-diameter portion of the lock pin. A large-diameter portion formed at the end of the housing, a door that opens and closes the housing, a slide bar movably provided on the door, a handle that moves the slide bar up and down, A locking hole formed by a large hole through which the large-diameter portion can freely enter and exit, and a small hole through which the small-diameter portion can freely penetrate;
A positioning pin provided so as to be able to abut on the boss, a spring for urging the positioning pin in an outward direction, a small-diameter shaft formed at the tip of the positioning pin, and a base formed at the base of the positioning pin. A door opening / closing device comprising: a large-diameter shaft; a large hole through which the large-diameter shaft can freely enter and exit; and a release ball hole including a small hole through which the small-diameter shaft can be inserted.