JP2020103687A - Opening/closing mechanism of biparting door and washing machine including the same - Google Patents

Abstract

To provide an opening/closing mechanism of a biparting door which has a simple structure, in which a door does not come off while opening/closing the door, and which can surely open/close the door.SOLUTION: For opening a door 102 rightward, when a left end of the door 102 is pulled to the near side, the door 102 oscillates in the counterclockwise direction while sliding to the right. That is, a second door side bracket 3R on the right end moves by a second cam groove 4R being guided to the other end side first pin 21R, and an inclination guide surface 41R, a parallel guide surface 42R and a door oscillation guide surface 43R are engaged with the other end side first pin 21R in this order. At the same time, since the other end side engagement block 6R slides along a notched flat surface 51R of the other end side second pin 5R, when the door 102 oscillates in the counterclockwise direction while sliding to the right, a second door side bracket 3R coming off from a second body side bracket 2R is prevented in an auxiliary manner.SELECTED DRAWING: Figure 10

Description

The present invention relates to a double door opening/closing mechanism used for a hinge of a double door such as a refrigerator, a washing machine, and a dryer, and a washing machine including the same. More specifically, the present invention relates to an opening/closing mechanism for a double-opening door and a washing machine equipped with the same, which can be opened and closed without any malfunction such as dropping during opening and closing.

For convenience of use, a double door used in a refrigerator or the like has been proposed. In order to reduce the resistance when the double door is opened and closed, there has been proposed a device that is interlocked with a door handle (for example, Patent Document 1). In a refrigerator with a double door opening/closing mechanism, a guide roller that smoothes the lateral movement of the door is placed at the bottom of the door, and an elastic member that biases the main body side at the center of the door to close the door itself is placed. What has been done is proposed (Patent Document 2). In a refrigerator having an opening/closing mechanism for a double door, if a foreign object is caught in the exposed grooved cams of the hinge mechanisms arranged on both sides, the door cannot be closed. For this reason, there is proposed one in which a groove cam shutter which is interlocked with the opening and closing of the door is arranged (Patent Document 3).

JP 2001-159268 A JP, 2006-132838, A JP, 2012-26613, A

The above-mentioned conventional double-opening door has to be disengaged between the hinge pin and the door when the door is opened and closed, and the structure is complicated to prevent the door from falling off during the opening and closing of the door. There is a problem in that the manufacturing cost rises.
The present invention achieves the following objects from the above background.
An object of the present invention is to provide a double-door opening/closing mechanism and a washing machine including the same, which has a simple structure and can reliably open/close the door without dropping the door during opening/closing.
Another object of the present invention is to provide an opening/closing mechanism for a double door and a washing machine including the same, which has a simple structure, has few failures, and can suppress an increase in manufacturing cost.

The present invention adopts the following means in order to solve the above problems.
That is, the opening/closing mechanism of the double door according to the first aspect of the present invention includes a door that covers the opening of the device body, and a double door that includes a pair of cam mechanisms symmetrically arranged at both ends of the device body and the door. In the mechanism,
A first cam groove bracket (3L) fixed to one end side surface of either the door or the device body;
A second cam groove bracket (3R), which is the same as the fixed position of the first cam groove bracket (3L) and is fixed to the other end side surface of either the door or the device body;
An inclined guide surface (41L) provided on the first cam groove bracket (3L) and opened to one end side of the door, and formed continuously with the inclined guide surface (41L) and parallel to the door. First cam having a parallel guide surface (42L) formed in a direction and a door swing guide surface (43L) that is formed continuously with the parallel guide surface (42L) and guides swing of the door. Groove (4L),
An inclined guide surface (41R) provided on the second cam groove bracket (3R) and opened to the other end side of the door, formed continuously with the inclined guide surface (41R) and parallel to the door A parallel guide surface (42R) that is formed in any direction, and a door swing guide surface (43R) that is formed continuously with the parallel guide surface (42R) and guides the swing of the door. Cam groove (4R),
A first pin bracket (2L) fixed to one side surface of the other end of the door or the device body, which is different from the fixing position of the first cam groove bracket (3L);
A second pin bracket (2R) fixed to the other end side surface of the other of the door or the device body, which is different from the fixing position of the second cam groove bracket (3R);
A first pin (21L) fixed to the first pin bracket (2L) and engageable with the first cam groove (4L);
Another end side first pin (21R) fixed to the second pin bracket (2R) and engageable with the second cam groove (4R);
One end side second pin (5L) fixed to the first pin bracket (2L) in parallel with the one end side first pin (21L) at a distance;
Another end side second pin (5R) fixed to the second pin bracket (2R) in parallel with the other end side first pin (21R) at a distance;
One end side that is fixed to the first cam groove bracket (3L), engages with the one end side second pin (5L), and slides on the outer periphery of the one end side second pin (5L) when the door is opened and closed. Engagement block (6L),
It is fixed to the second cam groove bracket (3R), engages with the other end side second pin (5R), and slides on the outer periphery of the other end side second pin (5R) when the door is opened and closed. It is characterized by comprising the other end side engaging block (6R).

An opening/closing mechanism for a double door according to a second aspect of the present invention is the opening/closing mechanism according to the first aspect of the present invention, wherein the first pin (21L) on the one end side has the parallel guide surface (42L) and the inclined guide surface (41L) of the first cam groove (4L). ), and the cross-sectional shape is a D-shape (22L) in which a circular part is cut out, and the other end side first pin (21R) is parallel to the second cam groove (4R). It is characterized in that it is engaged with the guide surface (42R) and the inclined guide surface (41R), and has a D-shaped shape (22R) with a circular cross section cut out.

An opening/closing mechanism of a double door according to a third aspect of the present invention is the door opening/closing mechanism according to the first or second aspect of the present invention, which is formed on the door swing guide surface (43L) of the first cam groove bracket (3L) and is opened when the door is opened. The first protrusion (44L) for contacting and stopping the notched plane of the one end side first pin (21L) to limit the swing angle, and the second cam groove bracket (3R) A door swing guide surface is formed for stopping the door by contacting with the notched plane of the other end side first pin (21R) to limit the swing angle of the door when the door is opened. It is characterized by having a second protrusion (44R).

An opening/closing mechanism of a double door according to a fourth aspect of the present invention is, in the first or second aspect of the present invention, fixed to one side surface of one end of the door or the device body and is movable with a top portion of the one end side first pin (21L). The one end side stopper block (7L) to be engaged and the one end side stopper block (7L) are fixed at the same fixing position, and fixed to the other end side surface of either the door or the device main body, and the other end side first block. It is characterized by comprising a top end of the 1-pin (21R) and a stopper block (7R) on the other end side which is movably engaged.

An opening/closing mechanism for a double door of the present invention 5 is the opening/closing mechanism of the double door according to the present invention 4, wherein the one end side engaging groove (71L) formed in the one end side stopper block (7L) and the top of the one end side first pin (21L). One end side engagement pin (23L) that is attached and can be engaged and disengaged with the one end side engagement groove (71L) by a biasing member, and the other end side engagement formed on the other end side stopper block (7R) It is characterized by comprising a groove and another end side engaging pin which is attached to the top of the other end side first pin (21R) and which can be engaged with and disengaged from the other end side engaging groove by an urging member.

A washing machine having an opening/closing mechanism for a double door according to a sixth aspect of the present invention is the washing machine according to the first to fifth aspects of the present invention, having a bottomed cylindrical water tub having one end opened in the opening and one end rotating in the water tub. A bottomed cylindrical washing tub is arranged, and the openings of the water tub and the washing tub are closed by the door.

A double-door opening/closing mechanism of the present invention and a washing machine equipped with the double-door opening/closing mechanism prevent a door from falling off by a cam groove formed with an inclined guide surface, a parallel guide surface, and a door swing guide surface and a D-shaped first pin. Therefore, with a simple structure, it is possible to suppress failures and suppress an increase in manufacturing cost.

FIG. 1 is an overall perspective view of a washing machine including an opening/closing mechanism for a double door according to an embodiment of the present invention, showing a state in which the door is closed. 2A is a view showing a state in which the door is fully closed, an AA sectional view of FIG. 1, and a FIG. 2B is a BB sectional view of FIG. 3(a) is a diagram showing a state in which the left end of the door is pulled toward the front to open the door, a diagram corresponding to FIG. 2(a), and FIG. 3(b) is a diagram showing the door to open the door. It is a figure equivalent to FIG.2(b) which shows the state which pulled the left end toward you. FIG. 4 is a diagram showing a state in which the door is fully opened, and is a front view of the washing machine in FIG. 1. 5: is a figure which shows the state which fully opened the door, and is CC sectional drawing of FIG. FIG. 6 is a perspective view showing a first main body side bracket fixed to one end side surface of the washing machine main body. 7: is a perspective view which shows the 1st door side bracket fixed to the one end side of a door, FIG. 7(a) is the perspective view seen from diagonally upward, FIG. 7(b) is the perspective seen diagonally from below. It is a figure. FIG. 8 is a perspective view showing the first main body side bracket and the first door side bracket with the door closed. 9: is a figure which shows the state which closed the door, FIG. 9(a) is a top view which shows a 1st main body side bracket and a 1st door side bracket, FIG. 9(b) is a 2nd main body side bracket. It is a top view which shows the 2nd door side bracket. 10: is a figure which shows the state which pulled the left end of the door to this side, FIG.10(a) is a top view which shows a 1st main body side bracket and a 1st door side bracket, FIG.10(b) is a It is a top view which shows a 2 main body side bracket and a 2nd door side bracket. FIG. 11 is a plan view showing the second main body side bracket and the second door side bracket with the door fully opened. FIG. 2 is a view showing a state in which the door is closed, FIG. 12(a) is a longitudinal sectional view showing the first main body side bracket and the first door side bracket, and FIG. It is a longitudinal cross-sectional view showing the first main body side bracket and the first door side bracket in the opened state.

[The structure of the double door opening/closing mechanism]
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of a washing machine having an opening/closing mechanism for a double door according to an embodiment of the present invention, showing a state in which the door is closed. 2 is a view showing a state in which the door is fully closed, FIG. 2(a) is a sectional view taken along line AA of FIG. 1, and FIG. 2(b) is a sectional view taken along line BB of FIG. FIG. 6 is a perspective view showing a first main body side bracket fixed to one end side surface of the washing machine main body. 7A and 7B are perspective views showing a first door side bracket fixed to one side surface of the door. FIG. 7A is a perspective view seen obliquely from above, and FIG. 7B is a perspective view seen obliquely from below. Is. FIG. 8 is a perspective view showing the first main body side bracket and the first door side bracket with the door closed. FIG. 9A is a plan view showing the first main body side bracket and the first door side bracket with the door closed, and FIG. 9B is the second main body side bracket and the second door side with the door closed. It is a top view which shows a bracket.

A washing machine 100 having an opening/closing mechanism for a double door according to an embodiment of the present invention has a bottomed cylindrical water tank (not shown) having an open end in a washing machine body (apparatus body) 101. It is installed sideways or diagonally upward with the edge facing the front. In addition, a bottomed cylindrical washing tub (not shown) having one end opened and a plurality of holes formed in the periphery of the aquarium is concentric with the aquarium so as to be rotatable in the aquarium. It is installed. The openings of the water tub and the washing tub are attached to the opening of the front surface 103 of the washing machine body 101. As shown in FIG. 1, the door 102 is attached to the opening of the front surface 103 of the washing machine main body 101, and a pair of opening/closing mechanisms are arranged at the two upper and lower symmetrical positions of the left and right ends of the door 102. A double-opening washing machine 100 that can be opened and closed on both left and right sides. Since the opening and closing mechanisms at the upper and lower ends are completely the same structure, in the following description, only the pair of opening and closing mechanisms arranged at the door 102 and the upper end of the washing machine body 101 will be described, and the pair of opening and closing mechanisms arranged at the lower end will be described. The description is omitted.

As shown in FIGS. 2A and 2B, when the door 102 is closed, a first pin bracket is attached to a side surface of one end (left end) of the washing machine body 101 (hereinafter, referred to as a first body side bracket). 2L is fixed, and a first cam groove bracket (referred to as a first door side bracket in the following description) 3L fixed to one end (left end) side surface of the door 102 is engaged with the first main body side bracket 2L. Similarly, when the door 102 is closed, a second pin bracket (hereinafter referred to as a second main body side bracket) 2R is fixed to the other end (right end) side surface of the washing machine main body 101, and the other end of the door 102 is fixed. A second cam groove bracket (referred to as a second door side bracket in the following description) 3R fixed to the (right end) side surface is engaged with the second main body side bracket 2R. As shown in FIGS. 7A, 7B, 8, 9A, and 9B, the first main body side bracket 2L, the second main body side bracket 2R, and the first door side bracket 3L The second door side bracket 3R is formed in a symmetrical shape. The first main body side bracket 2L and the second main body side bracket 2R are formed in an L shape, and the vertical side plates thereof are fixed to the side surface of the washing machine main body 101. Similarly, the first door side bracket 3</b>L and the second door side bracket 3</b>R are formed in an L shape, and their vertical side plates are fixed to the side surface of the door 102.

[Detailed structure of the left edge of the door]
First, detailed structures of the first door side bracket 3L and the first main body side bracket 2L fixed to the left end will be described. A first cam groove 4L that opens to one end (left end) side of the door 102 is formed on the horizontal upper plate of the first door-side bracket 3L. The first cam groove 4L includes an inclined guide surface 41L, a parallel guide surface 42L, and a door swing guide surface 43L. One end side first pin 21L engageable with the first cam groove 4L is fixed to the horizontal upper plate of the first main body side bracket 2L. The first pin 21L on the one end side has a cylindrical shape, and has a D-shaped cross section with a circular cutout. The D-shaped flat surface 22L of the one end side first pin 21L is formed parallel to the front surface 103 of the washing machine body 101. The parallel guide surface 42L is formed parallel to the door 102. A length L1 between the notched plane 22L and the outer circumference of the one end side first pin 21L is formed to be the same as the width W1 of the parallel guide surface 42L. The inclined guide surface 41L opening to the one end (left end) side of the door 102 is formed continuously with the parallel guide surface 42L, and the width W2 of the inclined guide surface 41L is the same as the outer diameter dimension of the one end side first pin 21L. Is formed in. The circular door swing guide surface 43L is formed continuously with the parallel guide surface 42L, and the inner diameter dimension of the door swing guide surface 43L is formed to be the same as the outer diameter dimension of the one end side first pin 21L. .. The door swing guide surface 43L is formed with a first protrusion 44L for limiting the swing angle of the door 102 when the door 102 is opened. The first protrusion 44L is formed on an extension of the parallel guide surface 42L.

As shown in FIGS. 6 and 9A, one end side second pin 5L is fixed to the horizontal upper plate of the first main body side bracket 2L. The one end side second pin 5L is parallel to the one end side first pin 21L and is arranged at a distance on the other end (right end) side of the door 102. The one end side second pin 5L has a columnar shape having a smaller diameter than the one end side first pin 21L, and has a D-shaped shape in which a part of a circular cross section is cut out. The D-shaped flat surface 51L of the second pin 5L on one end side is formed so as to be inclined downward to the right (as viewed in FIG. 9A) with respect to the front surface 103 of the washing machine body 101. One end side engagement block 6L engaging with one end side second pin 5L is fixed to the back surface of the horizontal upper plate of the first door side bracket 3L. When the door 102 is opened and closed, the one end side engagement block 6L slides along the outer periphery of the one end side second pin 5L. An arcuate guide surface 61L is formed on the one end side engaging block 6L, and this arcuate guide surface 61L is formed in an arcuate shape concentric with the door swing guide surface 43L.

As shown in FIGS. 7(a), (b), FIG. 8, FIG. 12(a), and (b), one end side stopper block 7L is provided on the upper end of the first door side bracket 3L on one end side surface of the door 102. It is fixed. The one end side engaging pin 23L is slidably inserted in the axial direction of the one end side first pin 21L in the vertical direction of FIGS. 12A and 12B, and the compression spring (biasing member) 24L is used to move the one end side engaging pin 23L. It is always urged upward in (a) and (b). One end side engagement groove 71L that engages with the upper end of the one end side engagement pin 23L is formed on the lower surface of the one end side stopper block 7L. The one end side engagement groove 71L is formed parallel to the door 102. The upper end of the one end side engaging pin 23L is formed into a truncated cone shape. An inclined surface 72L and an inclined surface 73L are formed on the right side surface of the one end side engagement groove 71L and the right side surface of the one end side stopper block 7L. Therefore, when the door 102 is opened and closed, the upper end of the one end side engaging pin 23L is pushed down by the inclined surface 72L and the inclined surface 73L, the compression spring 24L is compressed, and the upper end of the one end side engaging pin 23L is the one end side engaging groove. Enters and exits 71L smoothly.

[Detailed structure of the right edge of the door]
Next, detailed structures of the second door side bracket 3R and the second main body side bracket 2R fixed to the right end will be described. The second door side bracket 3R and the second main body side bracket 2R are formed in left-right symmetry with the above-described first door side bracket 3L and first main body side bracket 2L. As shown in FIG. 9B, FIG. 10B, and FIG. 11, the horizontal upper plate of the second door-side bracket 3R has a second cam groove 4R that opens toward the other end (right end) of the door 102. Are formed. The second cam groove 4R is composed of an inclined guide surface 41R, a parallel guide surface 42R, and a door swing guide surface 43R. The other end side first pin 21R engageable with the second cam groove 4R is fixed to the horizontal upper plate of the second main body side bracket 2R.

The other end-side first pin 21R has a columnar shape, and has a D-shaped shape in which a circular cross section is partially cut away. The D-shaped flat surface 22R of the other end-side first pin 21R is formed parallel to the front surface 103 of the washing machine body 101. The parallel guide surface 42R is formed parallel to the door 102. A length L1 between the notched flat surface 22R and the outer periphery of the other end side first pin 21R is formed to be the same as the width W1 of the parallel guide surface 42R. The inclined guide surface 41R opening to the other end (right end) side of the door 102 is formed continuously with the parallel guide surface 42R, and the width W2 of the inclined guide surface 41R is the same as the outer diameter dimension of the other end side first pin 21R. Formed in length. The circular door swing guide surface 43R is formed continuously with the parallel guide surface 42R, and the inner diameter dimension of the door swing guide surface 43R is formed to be the same length as the outer diameter dimension of the other end side first pin 21R. There is. The door swing guide surface 43R is formed with a second protrusion 44R for limiting the swing angle of the door 102 when the door 102 is opened. The second protrusion 44R is formed on an extension of the parallel guide surface 42R.

The other end side second pin 5R is fixed to the horizontal upper plate of the second main body side bracket 2R. The other end side second pin 5R is parallel to the other end side first pin 21R and is arranged at one end (left end) side of the door 102 with a space. The other end side second pin 5R is a columnar shape having a smaller diameter than the other end side first pin 21R, and has a D-shaped shape in which a cross section is partially cut out. The flat surface 51R of the second pin 5R on the other end side cut out in a D shape is formed so as to be inclined downward to the left (as viewed in FIG. 9B) with respect to the front surface 103 of the washing machine body 101. The other end side engagement block 6R engaging with the other end side second pin 5R is fixed to the back surface of the horizontal upper plate of the second door side bracket 3R. When the door 102 is opened and closed, the other end side engagement block 6R slides along the outer periphery of the other end side second pin 5R.

An arc-shaped guide surface 61R is formed on the other end side engaging block 6R, and this arc-shaped guide surface 61R is formed in an arc shape concentric with the door swing guide surface 43R. On the other end side surface of the door 102, the other end side stopper block 7R (see FIG. 4) having the same shape as the above-mentioned one end side stopper block 7L is fixed to the upper part of the second door side bracket 3R. Further, although not shown, the other end side engaging pin having the same shape as the one end side engaging pin 23L is inserted into the shaft center of the other end side first pin 21R of the second main body side bracket 2R, and the compression spring ( It is always urged upward by the urging member). Therefore, when the door 102 is opened/closed, the upper end of the other end side engagement pin is pushed down and the compression spring is compressed, and the upper end of the other end side engagement pin becomes the other end side engagement groove of the other end side stopper block 7R. Comes in and out smoothly.

[Door opening/closing operation]
The opening/closing mechanism of the double door according to the embodiment of the present invention is configured as described above, and the opening/closing operation is performed as follows. As shown in FIGS. 2, 9 and 12A, when the door 102 is closed, the inclined guide surface 41L of the first door side bracket 3L is attached to the one end side first pin 21L of the first main body side bracket 2L. The inclined guide surface 41R of the second door side bracket 3R is engaged with the other end side first pin 21R of the second body side bracket 2R. Further, the one end side engaging block 6L is engaged with the one end side second pin 5L, and the other end side engaging block 6R is engaged with the other end side second pin 5R. Further, the upper end of the one end side engaging pin 23L of the first main body side bracket 2L engages with the one end side engaging groove 71L of the one end side stopper block 7L, and the upper end of the other end side engaging pin of the second main body side bracket 2R. Engages with the other end side engaging groove of the other end side stopper block 7R. Therefore, the door 102 is maintained in the closed state.

[Opening operation of the right end of the door when pulling the left end of the door toward you and opening it to the right]
As shown in FIG. 3, FIG. 10 and FIG. 12B, when the left end of the door 102 is pulled toward the front to open the door 102 to the right, the door 102 swings counterclockwise while sliding to the right. That is, the second door side bracket 3R at the right end is moved by the second cam groove 4R being guided by the other end side first pin 21R, and the inclined guide surface 41R, the parallel guide surface 42R, and the door swing guide surface 43R are transferred in this order. Engages with the other end side first pin 21R. At the same time, since the other end side engaging block 6R slides along the notched plane 51R of the other end side second pin 5R, when the door 102 swings counterclockwise while sliding to the right, The second door side bracket 3R is prevented from coming off from the body side bracket 2R in an auxiliary manner. At the same time, the other end side stopper block 7R fixed to the door 102 is in a state in which the other end side engagement groove of the other end side stopper block 7R is engaged with the upper end of the other end side engagement pin of the second main body side bracket 2R. Therefore, it is possible to suppress the backlash of the door 102 when the door 102 swings counterclockwise while sliding to the right. When the inner periphery of the circular door swing guide surface 43R is completely engaged with the circular outer periphery of the other end side first pin 21R, the other end side engagement block 6R is a plane where the other end side second pin 5R is cut out. It becomes possible to open the door 102 by deviating from the right end of 51R.

[Opening the left end of the door when pulling the left end of the door toward you and opening it to the right]
When the left end of the door 102 is pulled toward you, the left first door side bracket 3L moves with the first cam groove 4L guided by the one end side first pin 21L, and the inclined guide surface 41L moves to the one end side first pin 21L. It comes off, and the left end of the door 102 begins to open a little. At the same time, since the one end side engagement block 6L slides along the one end side second pin 5L, when the door 102 swings counterclockwise while sliding, the first body side bracket 2L to the first door side bracket 3L. It prevents it from coming off. At the same time, the one end side stopper block 7L fixed to the door 102 slides while maintaining the one end side engaging groove 71L engaged with the upper end of the one end side engaging pin 23L of the first main body side bracket 2L. The backlash of the door 102 when it swings counterclockwise while sliding can be suppressed. After that, the one end side engagement block 6L is disengaged from the right end of the one end side second pin 5L, so that the left end of the door 102 can be further opened.

[Operation when the door is fully opened]
When the door 102 is further swung counterclockwise by hand, the second door side bracket 3R at the right end swings counterclockwise around the other end side first pin 21R as a fulcrum. At this time, the door swing guide surface 43R of the second door side bracket 3R is guided and swung by the circular outer periphery of the other end side first pin 21R, and the door swing guide surface 43R is formed in a circular shape. The second door side bracket 3R does not come off from the other end side first pin 21R. During the counterclockwise swing of the door 102, the arcuate guide surface 61R of the other end side engagement block 6R slides along the right end of the other end side second pin 5R. Similarly, the one end side engagement block 6L slides along the right end of the one end side second pin 5L. During the swinging operation of fully opening the door 102, the other end side stopper block fixed to the door 102 has the other end side engaging groove of the other end side stopper block 7R and the other end side engaging pin of the second main body side bracket 2R. Keeps engaged with the upper end of. As shown in FIG. 4, FIG. 5, and FIG. 11, when the door 102 is fully opened, the second protrusion 44R of the second door side bracket 3R at the right end comes into contact with the notched flat surface 22R of the other end side first pin 21R. The swing angle when the door 102 is fully opened can be limited.

[Operation when the door is fully closed]
When the door 102 is manually swung clockwise, the second door side bracket 3R at the right end is swung clockwise around the other end side first pin 21R as a fulcrum. Then, the left end and the right end of the door 102 return to the state of FIG. Then, when the door 102 is pushed inward, the door 102 slides to the left and swings clockwise, the left end and the right end of the door 102 return to the state of FIG. 9, and the door 102 is closed. The operation for opening the door 102 to the left is a left-right symmetrical operation to the above-described right-opening operation, and thus detailed description thereof will be omitted. In the opening/closing mechanism of the double door according to the embodiment of the present invention, the cam groove formed with the inclined guide surface, the parallel guide surface, and the door swing guide surface and the D-shaped first pin prevent the door from falling off. With a simple structure, there are few failures, and it is possible to suppress an increase in manufacturing cost.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. For example, in the above-described embodiment, the first main body side bracket (first pin bracket) 2L and the second main body side bracket (second pin bracket) 2R are fixed to the washing machine main body 101, and the first door side bracket (first Although the cam groove bracket) 3L, the second door side bracket (second cam groove bracket) 3R, the one end side stopper block 7L, and the other end side stopper block 7R are fixed to the door 102, the first main body side bracket (first Pin bracket) 2L, second main body side bracket 2R are fixed to door 102, first door side bracket (first cam groove bracket) 3L, second door side bracket (second cam groove bracket) 3R, one end side stopper block 7L and the other end side stopper block 7R may be fixed to the washing machine body 101. Further, in the above-described embodiment, the one end side engagement block and the other end side engagement groove of the one end side stopper block 7L and the other end side stopper block 7R fixed to the door 102 are the one end side engagement pin and the other end, respectively. Although the state in which the door 102 is engaged with the upper end of the side engaging pin is slid to prevent the rattling of the door 102 when swinging while sliding, it is not always necessary.

100...Washing machine 101...Washing machine main body (apparatus main body)
102... Door 103... Front 2L... 1st main body side bracket (1st pin bracket)
21L... First end side first pin 22L... Notched flat surface 23L... One end side engaging pin 24L... Compression spring (biasing member)
3L: 1st door side bracket (1st cam groove bracket)
4L... 1st cam groove 41L... Inclined guide surface 42L... Parallel guide surface 43L... Door swing guide surface 44L... 1st protrusion 5L... One end side 2nd pin 51L... Notched plane 6L... One end side engagement block 61L... Circular guide surface 7L... One end side stopper block 71L... One end side engaging grooves 72L, 73L... Inclined surface 2R... Second main body side bracket (second pin bracket)
21R... The other end side 1st pin 22R... Notched plane 3R... 2nd door side bracket (2nd cam groove bracket)
4R... 2nd cam groove 41R... Inclined guide surface 42R... Parallel guide surface 43R... Door swing guide surface 44R... Second protrusion 5R... Second end side second pin 51R... Notched flat surface 6R... Other end side engagement block 61R... Arc-shaped guide surface 7R... End side stopper block

Claims (6)

A door that covers the opening of the device body,
In an opening/closing mechanism for a double door having a pair of cam mechanisms symmetrically arranged at both ends of the device body and the door,
A first cam groove bracket fixed to one end side surface of either the door or the device body;
A second cam groove bracket that is fixed to the other end side of either the door or the device body at the same fixing position as the first cam groove bracket;
An inclined guide surface provided on the first cam groove bracket and formed to open at one end of the door, a parallel guide surface formed continuously with the inclined guide surface and formed in a direction parallel to the door, And a first cam groove formed continuously with the parallel guide surface and having a door swing guide surface for guiding the swing of the door,
An inclined guide surface provided on the second cam groove bracket and formed to open to the other end side of the door, and a parallel guide surface formed continuously with the inclined guide surface in a direction parallel to the door. And a second cam groove formed continuously with the parallel guide surface and having a door swing guide surface for guiding the swing of the door,
A first pin bracket fixed to the other end side of the other one of the door or the device body, which is different from the fixing position of the first cam groove bracket;
A second pin bracket fixed to the other end side surface of the other of the door or the device body, which is different from the fixing position of the second cam groove bracket;
One end side first pin fixed to the first pin bracket and engageable with the first cam groove,
Another end side first pin fixed to the second pin bracket and engageable with the second cam groove;
One end side second pin fixed to the first pin bracket in parallel with the one end side first pin at a distance;
Another end side second pin fixed to the second pin bracket in parallel with the other end side first pin at a distance;
One end side engagement block fixed to the first cam groove bracket, engaged with the one end side second pin, and sliding on the outer periphery of the one end side second pin when the door is opened and closed;
The other end side engagement block is fixed to the second cam groove bracket, engages with the other end side second pin, and slides on the outer periphery of the other end side second pin when the door is opened and closed. An opening/closing mechanism for double doors. The double door opening/closing mechanism according to claim 1,
The one end side first pin is a D-shape that engages with the parallel guide surface and the inclined guide surface of the first cam groove and has a circular cross-section with a part cut out.
The first pin on the other end side engages with the parallel guide surface and the inclined guide surface of the second cam groove, and has a D-shaped cross-section with a part of a circle cut out. Opening and closing mechanism for the double door. The opening/closing mechanism for a double door according to claim 1 or 2,
It is formed on the door swing guide surface of the first cam groove bracket and contacts the notched plane of the first pin on the one end side to limit the swing angle of the door when the door is opened. A first protrusion for stopping,
It is formed on the door swing guide surface of the second cam groove bracket and contacts the notched plane of the other end side first pin to limit the swing angle of the door when the door is opened. An opening/closing mechanism for a double door, which has a second protrusion for stopping the door. The opening/closing mechanism for a double door according to claim 1 or 2,
One end side stopper block fixed to one end side surface of one of the door or the device body and movably engaged with the top of the one end side first pin,
The other end side stopper that is fixed to the other end side surface of either the door or the device body at the same fixing position of the one end side stopper block and is movably engaged with the top portion of the other end side first pin. An opening/closing mechanism for double doors, which consists of a block. The opening/closing mechanism for the double door according to claim 4,
One end side engagement groove formed in the one end side stopper block,
One end side engagement pin attached to the top of the one end side first pin and capable of engaging and disengaging from the one end side engagement groove by a biasing member;
The other end side engaging groove formed in the other end side stopper block,
An opening/closing mechanism for a double door, which is attached to the top of the other end side first pin, and is composed of the other end side engaging groove and the other end side engaging pin that can be engaged and disengaged by a biasing member. A bottomed cylindrical water tub having one end opened to the opening, and a bottomed cylindrical washing tub having one end rotating in the water tub opened,
The opening of the water tub and the washing tub is closed by the door,
A washing machine comprising the double door opening/closing mechanism according to claim 1.

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