JP3890034B2 - Door opening / closing mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door opening / closing mechanism capable of opening and closing a relatively lightweight door such as a wardrobe or storage in both left and right directions.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a door opening / closing mechanism (Patent Document 1) that can open and close a door in both a right direction and a left direction has been proposed. This opens and closes the refrigerator door from both the left and right sides, and a pair of slide cams provided symmetrically with respect to the center line of the door at the left and right ends of the door, and a portion corresponding to each slide cam on the main body side. A pair of lock cams provided and a hinge pin attached in a state of penetrating a shaft hole provided in the lock cam. The slide cam is engaged from the first locking position where the first groove cam, which is detachable in the horizontal direction with respect to the hinge pin, and the hinge pin guided to the first groove cam continuously with the first groove cam are engaged when the door is closed. Furthermore, it has the 2nd groove | channel cam which can move to the 2nd latching position used as the rotating shaft of a slide cam at the time of door opening. Furthermore, the 1st cam protrusion provided in the outer periphery of the 2nd groove | channel cam is comprised. The lock cam includes a second cam projection that is in a locking relationship with the first cam projection at the first locking position.
[0003]
[Patent Document 1]
JP 09-303942 A
[Problems to be solved by the invention]
However, the door opening / closing mechanism described above has a complicated structure and a large number of parts, which increases the number of assembly steps. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to propose a door opening / closing mechanism having a small number of parts and easy assembly.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a door opening / closing mechanism according to the present invention houses a door having two pairs of pin holes formed in the upper and lower portions at the left and right ends of the back surface, and the door can be opened and closed in both the left and right directions. In addition, a frame that freely supports vertical movement between the upper position and the lower position in a state where the door is closed, and a pair of left and right sides of the door on the left and right sides of the frame. Hinge pins that are respectively provided downward facing the pin holes and that fit into the pin holes when the door is in the raised upper position and are detached from the pin holes when the door is in the lowered position, and the left and right sides of the frame The upper and lower sides of the door are opposed to a pair of pin holes on the left and right sides of the door, respectively, and are provided upward. When the door is in the lowered position, the door is raised and the door is raised. A hinge pin that detaches from the pin hole when in the upper position, and the door A lever whose central part is pivotally supported at a substantially central part of the lower side and whose left and right ends are swingable in the front-rear direction, and an end on one side of the lever is formed on the left and right ends of the lever. A wedge that pushes up the door to an upper position when entering between the door and the frame, and moves away from the door when the end of one side of the lever is retracted to lower the door to a lower position by weight; The left and right sides of the lever are pushed in by the door being closed, and the wedge is inserted between the door and the frame to raise the door to the upper position. The left and right sides of the door can be opened and closed by fitting the hinge pins on the left and right sides into the pin holes on the left side, and the ends of the left and right sides of the lever are pushed in with the door closed. The wedge is separated from the door and the frame. Allowed the opening and closing of the left and right one side of the door right allowed other fitting the hinge pin of the side engaged the pin holes of the left and right other side by lowering the lower position by weight Kitobira. Here, pressing pieces are provided on the front side of the left and right ends of the lever, respectively, so that when the right pressing piece is pressed, the right end moves forward and the left end moves backward, and when the left pressing piece is pressed, the left end moves forward and the right end moves backward. To. Further, the pin hole is formed on an L-shaped bracket projecting on the back surface of the door, and the hinge pin is disposed on an L-shaped bracket projecting on the frame.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a door opening / closing mechanism according to the present invention in a closed state, and FIG. 2 is a cross-sectional view of FIG. As shown in these drawings, doors 2 are pivotally supported by frame-shaped frames 1 alternately at left and right vertical positions. A lever 4 is pivotally supported at the lower end of the door 2, and a wedge 41 at the right end of the lever 4 is supported between the door 2 and the frame 1 so as to freely enter and retract. In the state of FIG. 1, by pressing the pressing piece 42, the wedge 41 enters between the door 2 and the frame 1, and the door 2 is pushed upward. It can be opened and closed. When the wedge 41 is pulled out from between the door 2 and the frame 1 by pressing the pressing piece 43 from the state shown in the drawing, the door 2 moves downward under its own weight, and the door 2 is moved to the right side with the left end as a support shaft. Can be opened and closed.
[0007]
3 is a front view of the frame 1, and FIG. 4 is a cross-sectional view of FIG. As shown in the drawing, the outer periphery of the frame 1 is formed in a U-shaped cross section, and the center portion is cut out in a square shape. L-shaped metal parts 11 to 14 obtained by bending a plate material into an L shape are fixed by screws or welding on the left and right and upper and lower sides of the inner part of the U-shaped outer frame of the frame 1. Downward hinge pins 15 and 16 project from the right ends of the right L-shaped brackets 11 and 12. Similarly, upward-facing hinge pins 17 and 18 project from the left ends of the left L-shaped brackets 13 and 14. The hinge pins 15 to 18 have a fixed height from the mounting surface of the frame 1, the downward hinge pins 15 and 16 serve as opening / closing central axes when the left side of the door 2 is opened and closed, and the upward hinge pins 17 and 18 are the door 2 The right side of this is the central axis for opening and closing when it is opened and closed.
[0008]
5 is a rear view of the door 2, FIG. 6 is a cross-sectional view of FIG. 5, FIG. 7 is a bottom view of FIG. 5, and FIG. 8 is a left side view of FIG. As shown in the figure, the door 2 is formed in a box shape with four sides bent, and L-shaped brackets 21 to 24 in which a plate material is bent into an L shape are fixed to the left and right and upper and lower sides of the inner portion by welding. Pin holes 25 and 26 penetrating in the vertical direction are formed at the left end portions of the left L-shaped metal fittings 21 and 22. Similarly, pin holes 27 and 28 penetrating in the vertical direction are formed at the right end portions of the right L-shaped brackets 23 and 24. These pin holes 25 to 28 have a certain height from the main body of the door 2 and are opened and closed when the hinge pins 15 and 16 are fitted downward into the pin holes 25 and 26 and the left side of the door 2 is opened and closed. It becomes an axis, and it becomes the central axis of opening and closing when the hinge pins 17 and 18 facing upward are fitted in the pin holes 27 and 28 and the right side of the door 2 is opened and closed.
[0009]
A lever 4 is rotatably supported at the center of the lower end of the door 2 via a support shaft 3. A wedge 41 is formed at one end of the lever 4 (the right end in FIG. 1 and the left end in FIGS. 5 and 7). On the surface side of both ends of the lever 4, pressing pieces 42 and 43 having a U-shaped cross section project. When the pressing piece 42 of the lever 4 is pressed, the lever 4 rotates and simultaneously the wedge 41 advances (moves upward in FIG. 7), enters between the frame 1 and the lower end of the door 2, and the door 2 is moved. Push up. Further, when the pressing piece 43 is pressed, the lever 4 rotates and the wedge 41 on the opposite side moves backward (moves downward in FIG. 7), comes out from between the frame 1 and the lower end of the door 2, and the door 2 Moves under its own weight.
[0010]
FIG. 9 is an explanatory view showing a state in which the right side of the door 2 can be opened and closed with the left side as a support shaft, and FIG. 10 is an explanatory view showing a state in which the left side of the door 2 can be opened and closed with the left side as a support shaft. In both figures, the back side of the door 2 is displayed through the door 2. In the case where the right side of the door 2 is used as a support shaft and the left side can be freely opened and closed, as shown in FIG. 9, the pressing piece 42 of the lever 4 is pressed and the wedge 41 is advanced to move the frame 1 and the lower end of the door 2 between In between, push the door 2 upward. As a result, the downward hinge pins 15 and 16 are fitted into the pin holes 25 and 26 to become the opening / closing central axis of the door 2, and the left side of the door 2 can be opened and closed. At this time, the pin holes 27 and 28 on the opposite side are separated from the upward hinge pins 17 and 18 and become free from each other, and do not hinder the opening and closing of the left side of the door 2.
[0011]
On the other hand, when the left side of the door 2 is used as a support shaft and the right side can be freely opened and closed, as shown in FIG. 10, the pressing piece 43 of the lever 4 is pressed, the lever 4 is rotated, and the wedge 41 is retracted simultaneously. The frame 1 and the lower end of the door 2 are extracted, and the door 2 is moved downward by its own weight. As a result, the upward hinge pins 17 and 18 are fitted into the pin holes 27 and 28 to become the opening / closing central axis of the door 2, and the right side of the door 2 can be opened and closed. At this time, the pin holes 25 and 26 on the opposite side are separated from the downward hinge pins 15 and 16 and become free from each other, and do not hinder the opening and closing of the right side of the door 2.
[0012]
As described above, the door opening / closing mechanism of the present invention has hinge pins 15 to 18 and pin holes 25 to 28 arranged on the left and right upper and lower sides between the frame 1 and the door 2, respectively, and the door 2 is moved up and down by the wedge 41. As a result, one hinge pin and the pin hole are fitted together and the other hinge pin and the pin hole are separated from each other, so that the support shaft of the door 2 can be changed alternately left and right, so that the number of parts is small and the assembly is easy. is there. In the embodiment, the hinge pins 15 to 18 are arranged on the frame 1 side and the pin holes 25 to 28 are arranged on the door 2 side. However, the pin holes are arranged on the frame 1 side by replacing them. It is also possible to arrange a hinge pin on the two sides.
[0013]
【The invention's effect】
As described above, according to the present invention, the door is supported so as to be movable up and down with respect to the frame, and the hinge pin and the pin hole that are fitted and detached by the vertical movement of the door are provided on the left and right, respectively. By providing a lever and wedge that move up and down with respect to the frame, when the door is closed and pushed into either the left or right side of the lever, the door moves up and down and the hinge part is switched to either the left or right side. The door can be opened and closed in both directions. These structures are simple, and since the number of parts is small, a door opening / closing mechanism that is easy to assemble can be obtained. By using this door opening / closing mechanism for a mirror case part of a wash basin, a clothes dance door, a storage door, etc., a user-friendly door that can be opened and closed in both the left and right directions can be obtained.
[Brief description of the drawings]
FIG. 1 is a front view showing a state in which a door of a door opening / closing mechanism according to the present invention is closed.
FIG. 2 is a cross-sectional view of FIG.
FIG. 3 is a front view of a frame.
4 is a cross-sectional view of FIG.
FIG. 5 is a rear view of the door.
6 is a cross-sectional view of FIG.
7 is a bottom view of FIG. 5. FIG.
8 is a left side view of FIG.
FIG. 9 is an explanatory view showing a state in which the left side can be opened and closed with the right side of the door as a support shaft.
FIG. 10 is an explanatory diagram showing a state in which the left side of the door can be opened and closed with the left side as a support shaft.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame 2 Door 3 Support shaft 4 Lever 11-14 L-shaped metal fittings 15-18 18 Hinge pins 21-24 L-shaped metal fittings 25-28 Pin hole 41 Wedge 42, 43 Pressing piece

Claims (3)

A door having two pairs of pin holes formed in the upper and lower portions at the left and right ends of the back surface,
A frame that accommodates the door so that it can be opened and closed in both the left and right directions, and supports the vertical movement between the upper position and the lower position with the door closed;
A pair of pin holes on the left and right sides of the door are opposed to the pair of pin holes on the left and right sides of the frame, respectively, and are respectively provided downward. A hinge pin that separates from the pin hole when the door is in the lowered position;
The upper and lower sides of the frame are provided on the upper and lower sides of the door so as to face the pair of pin holes on the left and right sides, respectively. A hinge pin that separates from the pin hole when the door is in the raised upper position;
A lever whose center part is pivotally supported at a substantially central part of the lower side of the door and whose left and right ends can swing in the front-rear direction;
The lever is formed at one end of the lever on the left and right sides, and when the end on the one side of the lever enters between the door and the frame, the door is pushed up to the upper position and A wedge that separates from the door when the end is retracted and lowers the door to a lower position by weight;
The left and right sides of the lever are pushed in by the door being closed, and the wedge is inserted between the door and the frame to raise the door to the upper position. The left and right sides of the door can be opened and closed by fitting the hinge pins on the left and right sides into the pin holes on the left side, and the ends of the left and right sides of the lever are pushed in with the door closed. The wedge is separated from the door and the frame, and the door is lowered to a lower position by weight, so that the left and right hinge pins are fitted to the left and right other side pin holes, and the left and right sides of the door are A door opening and closing mechanism characterized in that one side can be opened and closed. In the door opening and closing mechanism according to claim 1,
Pressing pieces are provided on the front side of the left and right ends of the lever. When the right pressing piece is pressed, the right end moves forward and the left end moves backward.When the left pressing piece is pressed, the left end moves forward and the right end moves backward. A door opening and closing mechanism. In the door opening and closing mechanism according to claim 1 or 2,
The door opening and closing mechanism characterized in that the pin hole is formed on an L-shaped bracket projecting on the back surface of the door, and the hinge pin is disposed on an L-shaped bracket projecting on the frame.

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