JP2769980B2 - Door mechanism - 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 mechanism capable of rotatably supporting a door and holding the door in a closed state.

[0002]

2. Description of the Related Art Conventionally, pins provided horizontally on the left and right side surfaces of a lower end portion of a door are rotatably mounted on side surfaces forming an opening of a wall, and the door is opened by rotating the door around the pin. There is a door mechanism that can be opened and closed. The door mechanism configured in this manner is provided with, for example, a latch as a lock section that forms a lock mechanism on a wall body above the opening, and a hook, for example, as a locked section that forms the lock mechanism at the pivotal end of the door. Provided.

[0003] Therefore, after the door is turned to a closed state in which the opening is closed, the door can be held in the closed state by hanging the latch on the hook, and after the latch is removed from the hook, The opening can be opened by rotating the door. If the latch is not hooked on the hook while the door is turned to the closed state, the door is opened by an external force such as vibration.

[0004]

The conventional door mechanism requires a lock mechanism for holding the door closed, so that the number of parts is increased and the cost is high. In addition, since the door must be operated from the closed state to the open state or from the open state to the closed state, the lock mechanism must be operated. There was an inconvenience.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned disadvantages, and can be configured at a low cost, and can perform an operation of changing a door from an open state to a closed state or changing a door from a closed state to an open state. It is intended to provide a door mechanism which can be operated by a simple series of operations.

[0006]

First, a door mechanism according to a first aspect of the present invention has a wall provided with an opening, and is vertically attached to left and right side surfaces forming the opening of the wall. Is provided with a first guide portion which is long in the vertical direction,
At the upper end , an inclined surface descending from the front end to the rear , this inclined surface
A pair of hinge plates formed with a second guide portion having a stopper surface rising from the lower end of the first and the left and right side surfaces;
And a door provided with a second pin guided by the left and right second guide portions.

Next, a door mechanism according to a second aspect of the present invention provides a door body provided with an opening having an inwardly hanging flange,
A second guide which is vertically attached to left and right side surfaces forming an opening of the wall, has a vertically extending first guide portion at a lower end portion, and has a surface which descends from a front end to a rear end at an upper end portion. A pair of hinge plates each having a portion, and first and left and right side guides, which are movable vertically in the left and right first guide portions and are rotatably loosely fitted, and guided by the left and right second guide portions. And a door provided with a second pin.

[0008]

According to the door mechanism of the present invention, the door is moved upward within the range of the first guide portion while rotating the door about the first pin, and the second pin is engaged with the second guide portion. When the hand is released, the first pin is guided by the first guide portion, and
The pin is guided by the second guide, and the door hangs. And
The door remains closed because the second pin is held at the lower end of the second guide or the door abuts the flange. In this closed state of the door, when the door is pivoted about the first pin while moving the door upward within the range of the first guide portion and the second pin is removed from the second guide portion, the door becomes the first pin. , And becomes an open state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a door mechanism according to a first embodiment of the present invention, FIG. 2 is an enlarged perspective view showing left and right hinge plates in the first embodiment of the present invention, and FIGS. 3 (a) and 3 (b). FIGS. 3A and 3B are explanatory diagrams of the operation of the first embodiment of the present invention.
(B) is equivalent to the sectional view by the AA line in the state where each part of FIG. 1 was assembled.

In these figures, reference numeral 1 denotes a wall constituting the outer wall of the oven, and an opening 2 for taking in and out the tray is provided. The opening 2 is formed by vertical left and right side surfaces 21 and 2r and horizontal upper and lower surfaces 2u and 2d. 11L denotes a left hinge plate attached to the left side surface 2l, and a first hinge plate vertically extending at the lower end of the right side surface.
An elongated first concave portion 12L is provided as a guide portion,
An inclined surface 13 descending from the front end to the rear at the upper end of the right side surface
a, an arc-shaped strike rising from the lower end of the inclined surface 13a.
Second concave portion 13 as a second guide portion having a lid surface 13b
L is formed.

Reference numeral 11R denotes a right hinge plate attached to the right side surface 2r. A first concave portion 12R having a long hole shape is provided at a lower end portion of the left side surface as a first guide portion which is long in the vertical direction, and an upper end portion of the left side surface is provided. The slope 13 descending from the front end to the rear
a, an arc-shaped strike rising from the lower end of the inclined surface 13a.
Second concave portion 13 as a second guide portion having a lid surface 13b
R is formed. Reference numeral 21 denotes a door, on the left and right side surfaces, first pins 22L and 22R that are movable in the vertical direction in the first left and right recesses 12L and 12R , and are rotatably and loosely fitted, and the second left and right recesses 13L and 13R. Second pin 23 guided by
L, 23R.

Reference numeral 24 denotes a handle provided at the pivotal end of the door 21. Note that the first concave portions 12L and 12R and the second concave portions 13L and 13R forming a pair are provided at the same position.
First pin 22L, 22R and second pin 23 forming a pair
L and 23R are provided at the same position in a horizontal state.

Next, the installation of the door will be described. First, one of the left and right hinge plates 11L and 11R, for example, the right side of the right hinge plate 11R is connected to the right side 2r forming the opening 2.
When the right hinge plate 11R is mounted on the right side surface 2r with a screw or the like so that the first concave portion 12R is located on the lower side and the second concave portion 13R is located on the upper side,
And the 2nd recessed part 12R and 13R will be in the state which opposes the left side surface 2l.

Then, with the first pin 22R of the door 21 inserted into the first recess 12R and the first pin 22L inserted into the first recess 12L of the left hinge plate 11L, the left side of the left hinge plate 11L is removed. When the left hinge plate 11L is mounted on the left side surface 2l with screws or the like so that the first concave portion 12L is positioned on the lower side and the second concave portion 13L is positioned on the upper side by contacting the left side surface 2l, 1st and 2nd recessed part 12
L, 12R, 13L, and 13R are in a facing state, and the installation of the door 21 is completed.

Next, the operation of opening and closing the door will be described. First, with the door 21 opened as shown in FIG.
The handle 24 is pinched and the door 21 is pivoted about the first pins 22L and 22R and moved upward within the range of the first recesses 12L and 12R to move the second pins 23L and 23R to the second recesses 13L and 13R. When the door 21 is engaged and the hand is released from the handle 24 and the door 21 is pressed, the second recesses 13L and 13R are lowered rearward.
22R is guided by the first concave portions 12L and 12R, and the second pins 23L and 23R are connected to the second concave portions 13L and 13R.
And the door 21 hangs down

[0016] Then, the second pin 23L, 23R is held by the second recess 1 3 L, 1 3 R of the lower end, the door 21 is 3
The closed state is maintained as shown in FIG. With the door 21 closed, the second pin 23L, 23R is pivoted about the first pin 22L, 22R while moving the door 21 upward within the range of the first recess 12L, 12R so that the second pin 23L, 23R is in the second recess. 13
L, 13R, the door 21 becomes the first pin 22L, 22R.
It turns around R and enters the open state as shown in FIG.

As described above, according to the first embodiment of the present invention, the door 21 can be rotatably supported by the left and right hinge plates 11L and 11R, and the left and right hinge plates 11L and 11R and the second pin are provided. Since a lock mechanism for holding the door 21 in the closed state can be configured by 23L and 23R, the number of components is small and the configuration is simple, so the configuration can be inexpensive. Further, since the door 21 can be brought into the closed state or the open state by moving the door 21 upward while rotating, the operation of bringing the door 21 into the closed state or the open state can be performed by a simple series of operations.

FIG. 4 is an enlarged perspective view showing a hinge plate used for a door mechanism according to a second embodiment of the present invention.
(B) is an operation explanatory view of the second embodiment of the present invention, in which the same parts as those in FIGS. In these figures, 31 indicates the left and right sides 2 of the wall 1
1 and 2r, shows a hinge plate attached to a lower end portion, a long hole 32 is provided as a first guide portion which is long in the vertical direction, and an inclined surface 33 descending rearward from a front end is provided at an upper end portion.
a, stopper surface 3 rising from the lower end of this inclined surface 33a
A notch 33 is formed as a second guide portion having 3b .

Next, the installation of the door will be described. First, the right side surface of one hinge plate 31 is brought into contact with the right side surface 2r forming the opening 2, and the one hinge plate 31 is positioned so that the long hole 32 is located on the lower side and the notch 33 is located on the upper side. It is mounted on the right side 2r with screws etc. in the vertical direction. Then, while inserting the first pin 22R of the door 21 into the long hole 32 of the one hinge plate 31, and inserting the first pin 22L into the long hole 32 of the other hinge plate 31, the other hinge plate 31 When the left side is brought into contact with the left side 21 and the long hole 32 is located on the lower side, and the other hinge plate 31 is placed in the vertical direction so that the notch 33 is located on the upper side, and attached to the left side 21 with screws or the like. The long holes 32 and the notches 33 of the left and right hinge plates 31 face each other, and the mounting of the door 21 is completed.

Next, the operation of opening and closing the door will be described. First, with the door 21 opened as shown in FIG.
The handle 24 is pinched and the door 21 is pivoted about the first pins 22L and 22R and moved upward within the long hole 32 to engage the second pins 23L and 23R with the notches 33. When the hand is released and the door 21 is pressed, the notch 33 is descending rearward, so that the first pins 22L and 22R are guided by the slot 32 by the weight of the door 21 and the second pin 22L.
The pins 23L and 23R are guided by the notches 33, and the door 21 hangs down.

The second pins 23L and 23R are notches 3
2, the door 21 is kept closed as shown in FIG. With the door 21 closed, the door 2
The first pin 22L, 22R is rotated around the first pin 22L, 22R while moving the
When the 3R is removed from the notch 33, the door 21 becomes the first pin 22L,
It turns around 22R and becomes an open state as shown in FIG.

As described above, according to the second embodiment of the present invention, effects similar to those of the first embodiment can be obtained.
Since the left and right hinge plates 31 have the same shape, the number of components is further reduced, and the configuration can be made inexpensively.

FIG. 6 is an exploded perspective view in which a part of a door mechanism according to a third embodiment of the present invention is broken, FIG. 7 is an enlarged perspective view showing a hinge plate used in the third embodiment of the present invention, and FIG.
(A), (b) is an explanatory view of the operation of the third embodiment of the present invention, and the same parts as those in FIGS. In these figures, reference numeral 3U denotes a flange, which is provided inside the opening 2 with the width of the opening 2 in a state of hanging down from above.

Reference numeral 3D denotes a flange, which is provided inside the opening 2 with the width of the opening 2 standing upright from below.
Reference numeral 41 denotes a hinge plate attached to the left and right side surfaces 21 and 2r of the wall body 1. A vertically extending long hole 42 is provided at a lower end portion as a first guide portion, and an upper end is from a front end to a rear end. An inclined surface 43 descends. The inclined surface 43 functions as a second guide.

Next, the installation of the door will be described. First, the right side surface of the one hinge plate 41 is brought into contact with the right side surface 2r forming the opening 2 so that the long hole 42 is located on the lower side and the inclined surface 43 is located on the upper side. To the right side 2r with screws or the like. Then, the first pin 22R of the door 21 is inserted into the long hole 42 of the one hinge plate 41, and the first pin 22L is inserted into the long hole 42 of the other hinge plate 41. When the left hinge is attached to the left side 21 with the other hinge plate 41 up and down so that the left side is in contact with the left side 21 and the long hole 42 is located on the lower side and the inclined surface 43 is located on the upper side. The long holes 42 and the inclined surfaces 43 of the left and right hinge plates 41 face each other, and the mounting of the door 21 is completed.

Next, the operation of opening and closing the door will be described. First, in a state where the door 21 is open as shown in FIG.
The handle 24 is pinched, the door 21 is rotated around the first pins 22L, 22R, and moved upward within the long hole 42 so that the second pins 23L, 23R are placed on the inclined surface 43. When the door 21 is released and the door 21 is pressed, the inclined surface 43 is descending rearward, so that the first pins 22L and 22R are guided by the slot 42 by the weight of the door 21 and the second pin
The pins 23L and 23R are guided by the inclined surface 43, and the door 21 hangs down.

When the upper portion of the door 21 contacts the flange 3U, the door 21 maintains the closed state as shown in FIG. 8B. In the closed state of the door 21, the first pin 22 is moved while moving the door 21 upward within the range of the elongated hole 42.
L and 22R, and rotate the second pins 23L and 23R.
Is removed from the inclined surface 43, the door 21 becomes the first pin 22L, 2
It turns around 2R and becomes an open state as shown in FIG.

As described above, according to the third embodiment of the present invention, effects similar to those of the second embodiment can be obtained.
Since the upper ends of the left and right hinge plates 41 may be inclined surfaces 43, the hinge plates 41 can be easily manufactured. Further, since the flanges 3U and 3L are provided, the wall 1 and the door 21 are provided.
The dirt and the like cannot enter the inside from the upper and lower gaps.

In each of the above-described embodiments, the second guide portion is provided with the second concave portion 13L, 13R, the notch 33, or the inclined surface 43.
However, any one may be provided. In the third embodiment, the example in which the upper end of the hinge plate 41 is the inclined surface 43 and the flanges 3U and 3D are provided has been described. However, only the flange 3U may be used, or the flange may be turned around. Thus, dust and the like can be prevented from further entering the inside from the gap between the wall 1 and the door 21.

Further, in the third embodiment, the example in which the flange 3U has the width of the opening 2 and the door 21 abuts on the flange 3U has been described. However, the width of the flange 3U may be made smaller than the width of the door 21. The second pins 23L and 23R may be in contact with the flange 3U. Also, the oven has been described as an example, but it goes without saying that the present invention can be applied to other ovens.

[0031]

As described above, according to the present invention, there is provided a lock mechanism capable of rotatably supporting a door with left and right hinge plates and holding the door in a closed state with the left and right hinge plates and the second pin. Since it can be configured, the number of parts is small and the configuration is simple. Further, since the door can be brought into the closed state or the open state by moving the door upward while rotating, the operation of bringing the door into the closed state or the open state can be performed by a series of simple operations.

Further, the left and right hinge plates have the same shape by forming the first guide portion of the left and right hinge plates with cutouts or inclined surfaces and the second guide portion with elongated holes.
The number of parts is further reduced, the configuration can be made inexpensively, and the left and right hinge plates can be easily manufactured. By setting the width of the flange to the width of the opening, dust and the like can be prevented from entering the inside from the gap between the wall and the door.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a door mechanism according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing left and right hinge plates according to the first embodiment of the present invention.

FIGS. 3A and 3B are explanatory diagrams of the operation of the first embodiment of the present invention.

FIG. 4 is an enlarged perspective view showing a hinge plate used for a door mechanism according to a second embodiment of the present invention.

FIGS. 5A and 5B are explanatory diagrams of the operation of the second embodiment of the present invention.

FIG. 6 is an exploded perspective view in which a part of a door mechanism according to a third embodiment of the present invention is cut away.

FIG. 7 is an enlarged perspective view showing a hinge plate used in a third embodiment of the present invention.

FIGS. 8A and 8B are explanatory diagrams of the operation of the third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 wall 2 opening 2l left side 2r right side 3U, 3D flange 11L left hinge plate 11R right hinge plate 12L, 12R first recess 13L, 13R second recess 21 door 22L, 22R first pin 23L, 23R second pin 31 Hinge plate 32 Long hole 33 Notch 41 Hinge plate 42 Long hole 43 Inclined surface

Claims (2)

(57) [Claims] 1. A wall body provided with an opening, and a first guide portion vertically attached to a left and right side surface forming left and right sides forming the opening of the wall body, and provided at a lower end portion in a vertical direction, and an upper end portion thereof. The slope descending from the front end to the rear
A pair of hinge plates formed with a second guide portion having a stopper surface that rises from the lower end of the inclined surface; and a left and right first guide portion that is movable on the left and right sides in the vertical direction and is rotatable. And a door provided with a first pin loosely fitted on the second pin and a second pin guided by the left and right second guide portions. 2. A wall provided with an opening having a flange hanging down inward, a first guide portion vertically attached to the left and right side surfaces forming the opening of the wall and vertically extending at a lower end portion. A pair of hinge plates having a second guide portion having a surface descending from a front end to a rear end at an upper end portion; and a left and right first guide portion movable on the left and right sides in the vertical direction. first pin rotatably loosely fitted, the door second pin is provided which is guided by the right and left of the second guide portion, the door mechanism comprising a.