JPH04148180A - Both left-and-right opening door structure for box body - Google Patents

Abstract

PURPOSE:To prevent the drop-off of a door from a box body by a method wherein handles for operating the opening and closing of the door are provided at the left side and the right side of the front of both left-and-right opening door while a regulating piece having a required length is interposed between left and right latch plates so as to be slidable into lateral direction. CONSTITUTION:A regulating piece 62 is arranged between left and right latch plates 56, 56 provided at the upper part of a both left-and-right opening door 12 so as to be slidable into lateral direction. In the closed condition of the door 12, left and right U-shape retaining pieces 54, 54 catch and brace opposing hinge shafts 50, 50 while the upper latch plate 56 closes an opening 54a. When the door 12 is to be opened rightward, for example, a right side handle 58 is pivoted clockwise about a connecting rod 64, then, the pin 66 of the handle 58 slides the latch plate 56 leftward through the cam hole 68 of the right side latch plate 56. Accordingly, the opening 54a is opened. The left end of the same is abutted against the right end of the regulating piece 62 by the movement of the right side latch plate 56 whereby the left side latch plate 56 is fixed so as not to be movable. Accordingly, the left side handle 58 is retained so as not to be pivotable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to the structure of a double door that can open and close an opening in a housing of a refrigerator or the like from either the left or right direction. Even if the operator accidentally touches the other handle while opening the double door in either the left or right direction, it will be rendered inoperable and the door will completely fall off from the housing. The present invention relates to a left and right double door structure in which the door can be opened easily and reliably, and the heat insulating ability of a single double door is not impaired.

Prior Art A storage layer such as a refrigerator or a freezer has a storage space inside its casing, and a lateral opening communicating with the space is openable and closed by a door supported by a hinge. There is. In other words, the door generally has a so-called "single-opening structure" that opens and closes to the right or left of the housing. For those that are installed, there are often restrictions on where they can be installed. To deal with such cases, instead of the single-swing door described above, a double-swing door that can open the door of a refrigerator or the like from either the left or right direction has been proposed, and has already been put into practice. . Refrigerators and the like that employ double-door doors are extremely convenient in practice, as there are no major restrictions on where they can be installed, and users can freely open the doors from either the right or left direction.

FIG. 6 to FIG. 8 show a conventional double door structure used in a refrigerator. Figure 8(a), (
As shown in b), the casing 14 of the refrigerator 10 has a double door 12 (hereinafter also simply referred to as "door j") pivoted by a hinge mechanism to be described later.
It is closed so that it can be opened and closed to the right or left. Vertical slits 40° 40 are formed at a predetermined distance on the left and right sides of the upper front surface of the door 12, and a handle 18 projects outward through each slit 40. When the right handle 18 is pushed up, the door 12 opens to the right about the left hinge shafts 32 and 30, which will be described later, relative to the housing 14, as shown in FIG. 8(a).

Conversely, if the left handle 18 is pushed up, the door 12 will move to the right hinge shaft 32.30, as shown in FIG. 8(b).
Center and open to the left.

The conventional structure of this double door is shown in longitudinal section in FIG. The illustrated example shows the left door pivot mechanism, and the case 14
An upper hinge hole 34 of a required diameter is formed on the lower surface of the hinge plate 16 horizontally arranged on the upper front surface of the
．． 34 is formed downward. Further, at the bottom of the housing 14, two brackets 35.
35 are provided horizontally. Each bracket 35 includes
A lower hinge hole 36 having the same diameter as the upper hinge hole 34 is formed downward to vertically align the axes of both hinge holes 34,36.

Further, as shown in FIG. 7, upper hinge shafts 32, 32 are provided on the left and right sides of the upper part of the door 12 and protrude upward so as to be able to rise and fall freely, and lower hinge shafts 32, 32 are provided on the left and right sides of the lower part of the door 12 that protrude downwardly so as to be able to rise and fall freely. Hinge shafts 30, 30 are provided. These upper hinge shafts 32, 32 on the left and right sides of the door are connected to the hinge plate 1.
Upper hinge holes 34, 34 that open downward and are formed in 6
It can be fitted in a corresponding manner. Further, the lower hinge shafts 30° 3o on the left and right sides of the door can be fitted into corresponding lower hinge holes 36, 36 formed downward in the bracket 35, 35. In other words, the left vertical hinge axis 32°3
0 is fitted into the corresponding upper and lower hinge holes 34 and 36, the door 12 is allowed to open to the right as shown in FIG. 8(a). Conversely, when the right vertical hinge shafts 32 and 30 are fitted into the corresponding vertical hinge holes 34 and 36, the eighth
The door 12 is allowed to open to the left as shown in Figure (b). When the left and right vertical hinge shafts 32 and 30 are simultaneously fitted into the left and right vertical hinge holes 34 and 36, the opening 44 of the housing 14 is sealed by the door 12.

As shown in FIG. 6, the handle 18 is attached to a link disk 20 which is vertically pivoted inside the door 12 via a horizontal pin 22.
is connected to the lever. A link plate 24 is connected to this link disk 20 via a pin 38.
4 is connected to the upper hinge shaft 32 via a pin 38.

Further, a link plate 26 is connected to the link disc 20 via a pin 38 at a position substantially opposite to the pin 38 with the horizontal pin 22 in between, and the link plate 26 has a lower hinge shaft 30 and a lower hinge shaft 30. The same configuration as shown in FIG. 7 is also adopted for the handle 18 on the right side to which the connecting rod 28 is connected via a pin 38.

When the opening 44 is closed by the door 12, the left and right upper hinge shafts 32, 32 and the lower hinge shaft 30.30 are connected to the corresponding upper hinge hole 34.34 and lower hinge hole 36,
36 is fitted. In this state, if it is desired to open the door 12 to the left, the handle 18 is pushed up from the position shown by the two-dot chain line to the position shown by the solid line, as shown in FIG.

As a result, the link disk 20 rotates clockwise by a required angle around the horizontal pin 22, and in order to push down the link plate 24 connected by the pin 38 and push up the link plate 26 connected by the pin 38, The upper hinge shaft 32 connected to the link plate 24 by a pin 38 descends accordingly,
It separates from the upper hinge hole 34 and releases the fitting. Also, a connecting rod 28 is connected to the link plate 26 via a pin 38.
is raised a required distance, whereby the lower hinge shaft 30 separates from the lower hinge hole 36 and releases its engagement.

Since the right handle 18 is not being operated at this time, the right upper hinge shaft 32 remains fitted into the upper hinge hole 34, and the right lower hinge shaft 30 remains fitted into the lower hinge hole 36. Therefore, the door 12 is attached to the right upper hinge shaft 3.
2 and the lower hinge shaft 30, it opens to the left as shown in FIG. 8(b). In order to close the door 12 opened to the left in this way, it is necessary to take the following two steps. First, s12 is inserted into the opening 44 of the housing 14.
The upper hinge shaft 32 and the lower hinge shaft 30 are aligned with the corresponding upper hinge hole 34 and lower hinge hole 36, respectively. Next, push down on the left handle 18 in the opposite direction, rotate the link disk 20 counterclockwise in FIG. 6, and move each link plate 24. Under the link action of the link plate 26, the upper hinge shaft 32 and the lower hinge shaft 30 are fitted into the upper hinge hole 34 and the lower hinge hole 36, respectively. This allows the door 12 to open at the opening 44.
This will ensure the closure of the project.

Problems to be Solved by the Invention In the double door according to the prior art described above, the double door mechanisms operated by the left and right handles 18 and operated in conjunction are mutually independent, and there is no mechanical relationship between them. I don't have it. Therefore, for example, if the operator accidentally operates the other left handle 18 after opening the door 12 to the right by operating the right handle 18, the left mechanism connected thereto will be activated. Then, the upper hinge shaft 32 that pivoted the door 12. The lower hinge shaft 30 retreats into the door at once, and the corresponding upper hinge hole 34. The fitting with the lower hinge hole 36 is then released. At this time, the door 12 is connected to the housing 14.
It will completely come off and fall off.

Additionally, in order to reliably close the door 12 to the opening 44, the upper hinge shaft 32 and the lower hinge shaft 30 must be completely inserted into the corresponding upper hinge hole 34 and lower hinge hole 36, as described above. After alignment, the handle 18 must be operated. In other words, the handle is operated after confirming that the door 12 is completely closed.
This required a complicated step-by-step operation.

Furthermore, as can be seen from FIG. 6, the main part of these double-opening mechanisms is the foamed urethane filling 4 inside the door 12.
Since it is assembled into two parts, it is extremely difficult to attach various parts during the assembly process or to repair it in the event of a failure. There was a drawback. In addition, by incorporating these double-opening mechanisms into the inside of the door 12, the foamed urethane filling 4 as a heat insulating material can be used.
It has been pointed out that there are problems such as the filling amount of s12 decreases, thereby reducing the cooling performance of the refrigerator and making it uneconomical, and the surface of s12 being cooled and causing dew condensation.

Purpose of the Invention The present invention has been proposed in order to suitably solve the drawbacks inherent in the double door structure according to the prior art described above. Even if the operator accidentally touches the other handle while opening the door in either the left or right direction, the door can be rendered inoperable and effectively prevented from completely falling off from the housing. To provide a left and right double door structure in which the door can be closed easily and reliably, and the heat insulation ability of the double door is not impaired.

Means for Solving the Problems In order to overcome the above problems and achieve the intended purpose, the present invention provides a housing having an opening that communicates with an article storage space, and a housing that is hingedly connected to the housing and has an opening that communicates with the article storage space. In a storage warehouse comprising a double door which can be closed and can be selectively opened in either the left or right direction, an upper hinge shaft fixed to the left and right sides of the upper part adjacent to the opening of the housing and extending downward; A lower hinge shaft is fixed to the left and right sides of the lower portion adjacent to the opening and extends upward.

U-shaped locking pieces that can hold the left and right upper hinge shafts and lower hinge shafts from the door closing direction are provided correspondingly on the upper left and right sides and the lower left and right sides of the double door.

Laterally slidable latch plates are provided at positions adjacent to the respective U-shaped locking pieces on the upper left and right sides and the lower left and right sides of the double door to hold the left and right upper hinge shafts and lower hinge shafts. The open end of the U-shaped locking piece held can be closed and opened by sliding the latch plate.

A handle for opening and closing the door is provided on the front left and right sides of the double door, which can be rotated by a predetermined angle, and when each handle is operated, a corresponding latch plate can be slid laterally, and the handle is located above the double door. A regulating piece of a required length is interposed between the left and right latch plates so as to be able to slide in the lateral direction, and the lateral sliding of one latch plate restricts the lateral sliding of the other latch plate. It is characterized by what it did.

Embodiment Next, a preferred embodiment of the left and right double door structure of the casing according to the present invention will be described with reference to FIGS. 1 to 5. In addition, members that are the same as or equivalent to already mentioned members shall be indicated by the same reference numerals.0For example, if the left and right double door structure of the present invention is implemented in the refrigerator 10, the casing in the refrigerator 10 A rectangular opening 80 is laterally formed in the housing 14 and communicates with a storage space defined within the refrigerator. Then, the opening 80 is inserted into the door 12.
The basic structure, which allows the door to open and close in either the left or right direction, is the same as the conventional left and right double door structure.

(Regarding the upper and lower hinge shafts 50 and 52) Housing 14
A hinge plate 16 extending slightly horizontally toward the front side is disposed on the upper front side of the hinge plate 16, and an upper hinge shaft of a required diameter is installed near the left open end and the right open end of the lower surface of the extending side of the hinge plate 16. 50, 50 are formed to protrude downward.

Further, brackets 53.53 are disposed near the left open end and the right open end of the lower front of the housing 14, and the zero brackets 53.5 extend horizontally toward the front side.
3, a lower hinge shaft 52.degree. 52 is formed to protrude upward, the axes of which are aligned with the upper hinge shaft 50.degree. 50, respectively. And each pair of upper and lower hinge shafts 50, 52
As will be described later, a double door 12 is rotatably supported.

(Regarding the upper and lower U-shaped locking pieces 54, 70) Also, on the left and right sides of the upper part of the double-hung door 12, there are at positions facing the upper hinge shafts 50, 50 when the door 12 is completely sealed. U-shaped locking piece 5 made of a metal material curved into a U-shape
4.54 are arranged respectively. This U-shaped locking piece 54
As shown in FIGS. 1 and 2(a), the opening 54a formed in the U-shaped curved portion opens toward the housing 14, and the opening width is slightly smaller than the diameter of the upper hinge shaft 50. It is set to become thicker. Therefore, the double door 12
When the U-shaped locking pieces 54 are tightly closed to the housing 14, the U-shaped locking pieces 54 capture and hold the corresponding upper hinge shafts 50 from the front side.

Similarly, on the lower left and right sides of the double door 12, U-shaped locking pieces 7 are placed at positions facing the lower hinge shafts 52, 52 when the doors are closed.
0.70, and each U-shaped locking piece 70 can hold the corresponding lower hinge shaft 52 from the front side. The opening 70a in this U-shaped locking piece 70 also
It opens to the housing 14 side and the opening width is the lower hinge shaft 52.
It is set to be slightly larger than the diameter of the

(Regarding the upper and lower latch plates 56.72) At the upper part of the double door 12, the left and right U-shaped locking pieces 5 mentioned above are attached.
On the inner side adjacent to 4.54, a laterally slidable latch plate 56.56 of the desired shape is arranged. The latch plate 56 has a lock-shaped notch on the front side of the end facing the U-shaped locking piece 54 (see FIG. 2(a)).
This cutout end 56a is configured so that when the U-shaped locking piece 54 holds the upper hinge shaft 50 when the double door 12 is opened, the opening 54a of the locking piece 54 can be opened and closed. It has become. Note that the latch plate 56 is elastically biased by a tension spring 60 connected to one end thereof, and is shifted toward the upper hinge shaft 50, as shown in FIG. 2(a).
The opening 54a of the U-shaped locking piece 54 is always closed.

The latch plate 56 also has a handle 58 as described below.
When the handle 58 is operated, the latch plate 56 slides away from the upper hinge shaft 50 against the elasticity of the tension spring 6°, as shown in FIG. 2(b). , the opening 54a of the U-shaped locking piece 54 is opened. Further, at the open end of the latch plate 56 on the side facing the upper hinge shaft 50, a taper 56b that is inclined in the direction in which the double door 12 opens is formed at a portion that is back-to-back with the notch end 56a. This taper 56b comes into contact with the corresponding upper hinge shaft 50 in the process of rotating and closing the five-fold door 12, and the wedge action on the slope causes the latch plate 56 to be pulled by the spring 6.
It is meant to slide in the lateral direction against zero elasticity. This opens the opening 54a of the U-shaped locking piece 54, allowing the upper hinge shaft 50 to be captured in the opening 54a.

Similarly, left and right U-shaped locking pieces 7 are placed at the bottom of the double door 12.
A laterally slidable latch plate 72.72 of the desired shape is arranged on the inner side adjacent to the 0.70. This lower latch plate 72 also has a cutout end 72a formed on the front side of the end facing the U-shaped locking piece 70.
0 holds the lower hinge shaft 52, the opening 70a of the locking piece 70 can be closed. Note that, unlike the upper latch plate 56, the latch plate 72 is not provided with a tension spring because the latch plate 72 is moved by a link mechanism that operates in conjunction with the handle 58 as described later.

Furthermore, at the open end of the lower latch plate 72, a taper 72b that is inclined in the direction in which the double door 12 opens is also formed at a portion that is back to back with the notch end 72a.
This taper 72b also comes into contact with the corresponding lower hinge shaft 52 in the process of closing the double door 12, and the wedge action on the slope causes the plate 72 to slide laterally, so that the U-shaped locking piece 70 It functions to allow the lower hinge shaft 52 to be captured in the opening 70a.

(Regarding the handle 58 and its linkage mechanism) On the upper front side of the double door 12, there are handles 58 of the desired shape on the left and right sides.
．． 58 are provided and extend outwardly. The handle 58 is fixed to the upper end of a connecting rod 64 that extends vertically through the double door 12, and can be horizontally rotated by a required angle about the connecting rod 64. Further, a pin 66 projecting downward is fixed to the back surface of the handle 58, and the pin 66 is inserted into an arcuate cam hole 68 formed in the latch plate 56. Further, one end of a torsion spring 82 is connected to the handle 58, so that the handle 58 can always be held in the operation standby position shown in FIG. 2(a).

Therefore, if either the left or right handle 58 is pushed diagonally inward and rotated, the handle 58 can be rotated by the required angle around the connecting rod 64, as shown in FIGS. 2(a) and 2(b). do. Therefore, the pin 66 and the arcuate cam hole 68
Due to the cam action, the upper latch plate 56 slides laterally inward against the elasticity of the tension spring 60.

A similar latch plate biasing mechanism is also provided below the double door 12, so this will be explained below. A link plate 74 is fixed at right angles to the lower end of the connecting rod 64 that vertically penetrates the inside of the opening door 12, and a pin 78 is formed to protrude downward from the lower surface of the link plate 74. Further, an arc-shaped cam groove 76 is bored at a predetermined position of the lower latch plate 72, and this cam groove 76
The pin 78 faces. Therefore, the handle 58
When operated in the direction of the arrow in FIG. 1, the connecting rod 64 rotates, causing the link plate 74 to rotate in the same direction. As a result, the lower latch plate 72 slides in the lateral direction under the cam action of the pin 78 and the arcuate cam groove 76.

(Regarding the regulation piece 62) Left and right latch plates 56 provided above the double door 12
．． A regulating piece 62 made of a long plate material is arranged between the sections 56 so as to be slidable in the lateral direction. Both ends of the regulating piece 62 can come into contact with the inner ends of the left and right latch plates 56, 56 under certain conditions. That is, for example, in the state shown in FIG. 2(a), it is assumed that the left end of the regulating piece 62 is in contact with the right end of the latch plate 56 located on the left side of the upper shoulder. At this time, the regulating piece 62
The right end of the latch plate 56 is dimensioned to provide a required gap G with respect to the left end of the latch plate 56 located on the right side. Then, as shown in FIG. 2(b), by operating the right handle 58 and sliding the latch plate 56 to the left, the left end of the latch plate 56 is brought into contact with the right end of the regulating piece 62. . This locks the left handle 58 so that it cannot rotate.

Effects of the Embodiment Next, the actual use of the left and right double door structure according to the embodiment will be explained. When the opening 80 is closed by the double door 12, the upper left and right U-shaped locking pieces 54, 54 capture the corresponding upper hinge shafts 50, 50, as shown in FIG. I'm hugging you. Further, the upper latch plate 56 is urged laterally outward by a tension spring 60, and its notched end 56a closes the opening 54a of the U-shaped locking piece 54. Further, the U-shaped locking pieces 70, 70 on the left and right sides of the lower part of the double door 12 similarly catch and hold the lower hinge shafts 52, 52, and the corresponding lower latch plates 72 The opening 70a of 70 is closed. Therefore, unless the handle 58 is operated, the double door 12 will not open in either the left or right direction.

(When opening the double doors 12) In this state, if the operator wants to open the double doors 12 to the right, for example, as shown in FIG.
8 and center around the connecting rod 64 as shown by the arrow.
Slightly rotate it clockwise while resisting the elasticity of the torsion spring 82. As a result, the pin 66 protrudes downward from the handle 58 and the arcuate cam hole 6 of the right latch plate 56.
8, the latch plate 56 is slid to the left while resisting the elasticity of the tension spring 60. As a result, the cutout end 56a of the latch plate 56 opens the opening 54a of the U-shaped locking piece 54 that holds the upper hinge shaft 50 on the right side. This right latch plate 56
As a result of this movement, the left end of the plate 56 comes into contact with the right end of the regulating piece 62, fixing the left latch plate 56 immovably. Therefore, the left handle 58 is held unrotatable.

Furthermore, when the right handle 58 is operated, the connecting rod 64 connected thereto is rotated to rotate the link plate 74 clockwise. As a result, the bottle 78 protruding from the link plate 74
and an arcuate cam groove 76 bored in the lower latch plate 72.
Under the camming action of the latch plate 72, the latch plate 72 slides laterally inwardly. Therefore, the cutout end 72a of the lower latch plate 72 opens the opening 70a of the U-shaped locking piece 7o that holds the lower hinge shaft 52 on the right side.

Next, as shown in FIG. 2(c), the right handle 58
If you pull it further toward you with the rotation stopped, the left upper hinge shaft 50, the U-shaped locking piece 54 holding it, and the left lower hinge shaft 52 will be separated. Under the hinge action of the U-shaped locking piece 70 held therein, the double door 12 smoothly opens to the front of the housing 14. At this time as well, movement is restricted in the order of the right latch plate 56 → regulation piece 62 → left latch plate 56, so
The left handle 58 remains unrotatable. Therefore, even if the operator accidentally touches the left handle 58, it will not operate, and there is no possibility that the double door 12 will completely fall off from the housing 14.

(When closing the double door 12) Next, take out the articles from inside the refrigerator.

A case in which the double doors 12 are closed after storage will be explained. At this time, when the right handle 58 is released, the handle 58 rotates counterclockwise about the connecting rod 64 due to the return elasticity of the torsion spring 82 and returns to the standby position.

In addition, together with the elastic action of the tension spring 60, the upper right latch plate 56 slides laterally outward, and its notched end 56a closes the U-shaped locking piece 54. .

Further, the connecting rod 64 also rotates together with the handle 58, and the cutout end 72a of the lower right latch plate 72 also closes the U-shaped locking piece 70 under the action of the link.

After releasing the handle 58 in this way.

When the operator presses the double door 12 toward the housing 14, the door 12 rotates about the upper hinge shaft 50 and the lower hinge shaft 52 in the closing direction. During this rotation, the tapers 56 b, 7 of the upper and lower latch plates 56°72
2b comes into contact with the upper and lower hinge shafts 50 and 52 on the right side, as shown in FIG. move.

The upper hinge shaft 50 and the lower hinge shaft 52 are thus captured in corresponding U-shaped locking pieces 54.70.

Then, under the elastic action of the tension spring 60, the latch plate 56.72 slides slightly to the right, and returns to the position shown in FIG. 2(a).
In this state, the double door 12 is reliably closed.

Regarding FIGS. 2(a) to (d), the case where the double door 12 is opened to the right has been explained, but as shown in FIG. 3(b), the operation is exactly the same when the double door 12 is opened to the left. This is achieved through steps.

As described in detail of the invention, according to the left and right double door structure according to the present invention, a regulating piece is interposed between the left and right double door mechanisms, so that when one handle is operated, the other handle and related doors are closed. Mechanism is locked. Therefore, even if you accidentally touch the other handle while opening the double door in either the left or right direction, the handle will be held inoperable and the double door will not fall off from the storage body. The inconvenience caused by this will be completely eliminated. Also, when closing a double door, you can close it completely by simply pushing the door toward the housing without operating the handle. That is, during the opening operation of the double door, the taper of the latch plate comes into contact with the hinge shaft and moves a required distance, so that the hinge shaft is captured by the U-shaped locking piece.

Further, the left and right double-opening mechanisms are externally attached to the upper and lower parts of the five-fold double door, respectively, and there is no need to arrange them inside the door. What's more, all that is required is to insert vertical connecting rods from side to side inside the double door. Therefore, parts can be easily assembled and removed for repairs.
Further, the heat insulating performance inside the door does not deteriorate, and there are no disadvantages such as water droplets adhering to the door surface.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing the schematic structure of a left and right double door structure according to an embodiment of the present invention, and FIGS.
d) is an explanatory plan view showing the state in which the double door is closed and the state in which it is opened with respect to the housing, and FIG.
), (b) are perspective views showing the refrigerator with double doors according to the example in which the doors are opened to the right and left open, FIG. 4 is a front view of the refrigerator shown in the example, and FIG. The diagram is
FIG. 6 is a side view of the refrigerator according to the embodiment, and FIG. 7 is a vertical perspective view showing the internal structure of the double door according to the prior art. The partially cutaway front view of the conventional double door shown in FIG. 6, and FIGS. 8(a) and (b) are schematic diagrams showing the cloth gap and left-opening states of the refrigerator equipped with the double door shown in FIG. 6, respectively. FIG. 12... Double door 50... Upper hinge shaft 54... U-shaped locking piece 56b... Taper 62... Regulating piece 66... Pin 70... U-shaped locking piece 72b... - Taper 76... Arc-shaped cam hole 14... Housing 52... Lower hinge shaft 56... Latch plate 58... Handle 64... Connecting rod 68... Arc-shaped cam hole 72. ... Latch plate 74 ... Link plate 78 ... Bin 80 ... Opening

Claims (1)

[Claims] [1] A casing (14) having an opening (80) communicating with an article storage space, and a casing (14) that is hinged to the casing (14) to close the opening (80). , which is fixed to the left and right sides of the upper part of the housing (14) close to the opening (80) and extends downward. An upper hinge shaft (50), and a lower hinge shaft (52) fixed to the lower left and right adjacent to the opening (80) and extending upward, the upper hinge shaft (52) being fixed to the upper left and right and lower left and right of the double door (12). , correspondingly U-shaped locking pieces (54, 70) capable of holding the left and right upper hinge shafts (50, 50) and lower hinge shafts (52, 52) from the door closing direction when the door is closed. latch plates (56, 72) that are slidable laterally are provided on the upper left and right sides and the lower left and right sides of the double door (12) at positions adjacent to the respective U-shaped locking pieces (54, 70). U-shaped locking pieces (54, 70) are provided to hold the left and right upper hinge shafts (50, 50) and lower hinge shafts (52, 52).
The openings (54a, 70a) of the latch plate (5
6, 72) can be closed and opened by sliding, and handles (58) for opening and closing the door are provided on the front left and right sides of the double door (12), which can be rotated by a predetermined angle, and each handle (58) Depending on the operation, the corresponding latch plate (56, 7
2) can be slid laterally, and a regulating piece (6
2) are interposed so as to be slidable in the lateral direction, and the lateral sliding of one latch plate (56) restricts the lateral sliding of the other latch plate (56). The housing has a left and right double door structure. [2] At the open end of the latch plate (56, 72),
Tapers (56b, 72b) that are inclined toward the opening direction of the double door (12) are formed on the sides facing the upper hinge shaft (50) and the lower hinge shaft (52), respectively, so that the double door (12) During the closing operation, this taper (56b, 72
b) abuts against each corresponding upper hinge shaft (50) and lower hinge shaft (52) and the latch plate (56, 72)
is slid laterally, thereby causing the U-shaped locking piece (54,
2. The left and right double door structure of a housing according to claim 1, wherein the hinge shafts (50, 52) are allowed to be held by the corresponding hinge shafts (50, 52). [3] Pins (66) extending downward are provided at appropriate locations on the handle (58), and the pins (66) are inserted into latch plates (56, 56) provided on the left and right sides of the upper part of the door. An arc-shaped cam hole (68) is bored, and the latch plate (56,
56) A left and right double door structure for a housing according to claim 1, wherein the left and right door can be slid laterally. [4] A connecting rod (
64), the handle (58) is fixed to the upper end of this connecting rod (64), and a link plate (74) is provided to the lower end of the connecting rod (64).
), and then attach the pin (78) to this link plate (74).
An arc-shaped cam hole (76) into which the pin (78) is inserted is bored in the latch plate (72, 72) provided on the left and right sides of the lower part of the door, and the handle (58) is rotated. 2. A double-opening housing according to claim 1, wherein the latch plate (72, 72) can be slid laterally under the cam action of the pin (78) and the cam hole (76) during operation. door structure.