JP2020118327A - Slide opening/closing mechanism and refrigerator with the same - Google Patents

Abstract

To provide a slide opening/closing mechanism capable of preventing half opening of a drawer type door and capable of easily drawing the drawer type door, and a refrigerator.SOLUTION: The present invention relates to a slide opening/closing mechanism 100 for sliding a drawer type door of a refrigerator in an opening/closing direction between a full opening position where the drawer type door is opened full with respect to a storeroom and a full closing position where the drawer type door is closed full with respect to the storeroom. The slide opening/closing mechanism comprises: a fixed rail which is provided at a main body side of the refrigerator; a first slide frame 3 which is provided at the side of an accommodation case, supports the drawer type door and is slid along the fixed rail 1; a second slide frame 2 which is interposed between the fixed rail 1 and the first slide frame 3 and slid along the fixed rail 1; a first rolling body which is provided in the first slide frame 3; and an inclined pull-in surface which is provided in the fixed rail 1 and brought into contact with the first rolling body and pulls the drawer type door which is located at a half opening position between the full opening position and the full closing position, into the full closing position.SELECTED DRAWING: Figure 2

Description

The present invention relates to a slide opening/closing mechanism for opening/closing a drawer type door and a refrigerator including the same.

Conventionally, as a refrigerator having a drawer type door (hereinafter referred to as a drawer type door), a refrigerator body having a storage room having a front opening, a drawer type door for opening and closing the front opening, and a drawer type movable together There is a storage case provided with a storage case, and a slide opening/closing mechanism that is provided between the refrigerator body and the storage case and that opens and closes the drawer type door by sliding. The slide opening/closing mechanism is provided on a side wall of a main body of a refrigerator forming a storage chamber and a storage case side, and slides along the fixed rail while supporting the pull-out door and the storage case. And a frame.

Some refrigerators having such a drawer type door are provided with a self-closing mechanism that automatically closes the drawer type door to prevent the drawer type door from half-opening. As such a self-closing mechanism, for example, Patent Document 1 discloses a mechanism that prevents the drawer-type door from half-opening by retracting the slide frame from the back side in the opening/closing direction of the drawer-type door by the restoring force of the tension coil spring. Has been done.

JP, 2009-270771, A

However, in the above-described one that prevents the pull-out door from half-opening by using the tension coil spring, the restoring force of the pull coil spring becomes a resistance when pulling out the pull-out door, and this restoring force is increased as the pull-out door is pulled out. Since it becomes large, there is a problem that the pull-out operation of the pull-out door becomes heavy. In particular, such a problem becomes noticeable in a large refrigerator in which the slide opening/closing mechanism includes a multi-stage slide frame.

Therefore, the present invention provides a slide opening/closing mechanism that can prevent the drawer-type door from half-opening and that allows the drawer-type door to be easily pulled out, and a refrigerator including the same, in which the slide frame is configured in multiple stages. This is the main issue.

That is, the slide opening/closing mechanism according to the present invention is provided between a refrigerator main body having a storage chamber and a storage case provided in the storage chamber, and the pull-out door is fully opened with respect to the storage chamber and the fully opened position. The slide rail is slid along the opening/closing direction between the storage chamber and the fully closed position, and the fixed rail is provided on the refrigerator main body side and the drawer case is provided on the storage case side. A first slide frame that supports the movable door and slides along the fixed rail; and a second slide frame that is interposed between the fixed rail and the first slide frame and slides along the fixed rail. A first rolling element provided on the first slide frame and the fixed rail, contacting the first rolling element, and being in a half-opened position between the fully open position and the fully closed position; And an inclined retracting surface for retracting the pull-out door to the fully closed position.

With such a configuration, the slide opening/closing mechanism is inclined so that the first rolling element provided on the first slide frame and the pull-out door in the half-open position in contact with the first rolling element are pulled to the fully closed position. Since the retractable door is provided at the half-open position, the first rolling element slides on the retractable surface to slide the first slide frame, and the retractable door is retracted to the fully closed position. .. As a result, it is possible to prevent the drawer type door from half-opening.
Further, since the slide opening/closing mechanism is a multi-stage type having a second slide frame interposed between the fixed rail and the first slide frame, it can be suitably used for a large refrigerator having a large capacity storage case. it can.
Moreover, since the retractable door is pulled in by its own weight by utilizing the inclination of the retractable surface instead of the restoring force of the spring, it does not become heavy as the retractable door is pulled out, and the retractable door can be pulled out easily. be able to.
The "half-open position" referred to in the present invention means a position where the drawer type door is slightly opened from the fully closed position, and for example, the drawer type door is in a range of more than 0 cm and about 3 cm or less from the fully closed position. It means the position pulled out by.

The slide opening/closing mechanism is provided on the second rolling element provided on the second slide frame and the fixed rail, and comes into contact with the second rolling element to move the second slide frame to the depth side in the opening/closing direction. It is preferable to further include an inclined auxiliary drawing surface for drawing in.
If it is such a thing, when closing the drawer type door, if the second rolling element is in a position in contact with the auxiliary retracting surface, the second slide frame slides so as to be retracted to the depth side, The resistance against the sliding movement of the first slide frame is reduced, and the pull-out door at the half-open position can be reliably pulled in at the fully closed position.

In the slide opening/closing mechanism, a stopper made of an elastic body that restricts the movement of the second rolling element to the depth side is provided at an end on the depth side of the auxiliary retracting surface of the fixed rail. preferable.
In such a case, since the stopper that stops the second rolling element is made of an elastic body, the stopper absorbs the kinetic energy of the second rolling element when the second slide frame is retracted to the depth side. It is possible to prevent the second rolling element from bouncing back to the pulling side. Thereby, the half-opening of the drawer type door can be prevented more reliably.

As an aspect of the stopper, there may be mentioned one formed by cutting and raising a part of a side surface of the fixed rail toward the housing case.

It is preferable that, in the slide opening/closing mechanism, a riding surface that inclines at a downward slope toward the pulling side is formed at an end of the fixed rail on the pulling side in the opening/closing direction.
With such a structure, the first rolling element can be smoothly placed on the first main guide surface when the drawer type door is closed from the fully open position, and the drawer type door can be closed with a small force.

A guide roller for slidably supporting the first slide frame is provided on the fixed rail, and a guided surface facing downward is provided on the first slide frame so as to contact the guide roller. It is preferable that the guided surface includes an inclined surface that is inclined at a downward slope toward a depth side in the opening/closing direction at an end portion on the pulling side in the opening/closing direction.
With such a structure, the first slide frame slides along the fixed rail via the guided surface and the guide roller, so that the first slide frame can slide more stably in the opening/closing direction. Further, the above-mentioned retracting surface is inclined, and the first rolling element falls into the retracting surface when the drawer-type door is at the fully closed position, but the guided surface is the end portion on the pulling side in the opening/closing direction. Since it is formed so as to incline at a downward slope toward the inner side in the opening/closing direction, the inclination of the first slide frame can be brought close to horizontal when the drawer-type door is in the fully closed position. The inclination of the case can be suppressed.

In the slide opening/closing mechanism, the first slide frame includes an auxiliary rolling element, and the second slide frame guides the auxiliary rolling element along the opening/closing direction; and the opening/closing on the auxiliary guide surface. It is preferable to provide an abutting portion which is provided at an end on the depth side in the direction and which comes into contact with the auxiliary rolling element.
With such a structure, when the drawer type door is closed, the auxiliary rolling element of the first slide frame comes into contact with the contact portion of the second slide frame, so that the first slide frame moves to the second slide frame. The pull-out door can be closed by pushing it toward the inner side.

The slide opening/closing mechanism, when the first slide frame is slid toward the pulling side in the opening/closing direction by a predetermined distance or more with respect to the fixed rail, the first slide frame is moved with respect to the second slide frame. It is preferable that it is configured to incline at a downward slope toward the pull tab side.
In such a case, when the pull-out door is pulled out to some extent, the first slide frame inclines at a downward slope with respect to the second slide frame toward the pull side, so pull out the pull-out door with a small force. Will be able to.
As a specific aspect of such a structure, a plurality of the auxiliary rolling elements are provided, and the line connecting the centers of the plurality of auxiliary rolling elements and the auxiliary guide surface of the second slide frame are configured to intersect with each other. I can list things.

A refrigerator according to the present invention is characterized in that the slide opening/closing mechanism described above is provided between the refrigerator body and the housing case.

According to the present invention having such a configuration, it is possible to provide a refrigerator capable of preventing the drawer type door from half-opening and easily pulling out the drawer type door.

The figure which shows roughly the whole structure of the refrigerator in this embodiment. The perspective view which shows roughly the whole structure of the slide opening/closing mechanism of the same embodiment. FIG. 3 is a perspective view and a plan view schematically showing the configuration of the fixed rail of the same embodiment. FIG. 4 is an enlarged view of portions A to C of FIG. 3. FIG. 3 is a perspective view and a plan view schematically showing the configuration of the second slide frame of the same embodiment. FIG. 3 is a perspective view and a plan view schematically showing the configuration of the first slide frame of the same embodiment. The figure explaining operation|movement of the slide opening/closing mechanism at the time of pulling out of the drawer type door of the same embodiment. The figure explaining operation|movement of the slide opening/closing mechanism at the time of pushing in of the drawer type door of the same embodiment. The figure explaining the retracting operation of the drawer type door by the retracting mechanism of the embodiment. The figure explaining the retracting operation of the drawer type door by the retracting mechanism of the embodiment.

A refrigerator 200 according to an embodiment of the present invention will be described below with reference to the drawings. The refrigerator 200 described below is for embodying the technical idea of the present invention, and the present invention is not limited to the following unless specified otherwise. The contents described in one embodiment can be applied to other embodiments. In addition, the sizes and positional relationships of members shown in the drawings may be exaggerated for clarity of explanation. Further, in order to simplify the description, some members (draw-out door D, refrigerator body B, etc.) may be omitted in each drawing.

<Device configuration>
As shown in FIG. 1, the refrigerator 200 of the present embodiment has a refrigerator body B in which a storage room S having a front opening O is formed, a drawer type door D that opens and closes the front opening O, and a drawer type door D. At least a storage case that moves together with the refrigerator main body B and a pair of slide opening/closing mechanisms 100 that slide the pull-out door D are provided between the storage case and the storage case. Since the pair of slide opening/closing mechanisms 100 are provided symmetrically on the left and right inner side walls of the refrigerator body B, only one slide opening/closing mechanism 100 will be described below, and the other slide opening/closing mechanism 100 will be described below. Omit it.

The slide opening/closing mechanism 100 slides the pull-out door D between the fully closed position P where the storage chamber S is fully closed and the fully open position Q where the storage chamber S is fully opened along the opening/closing direction. It is what makes me. The slide opening/closing mechanism 100 is of a three-step pull type including two slide frames. Specifically, as shown in FIG. 2, the fixed rail 1 fixedly provided on the refrigerator main body B side, the first slide frame 3 provided on the housing case side, the first slide frame 3 and the fixed rail 1 are provided. And a second slide frame 2 provided so as to be interposed therebetween. The fixed rail 1 is provided along the opening/closing direction of the drawer type door D, and the first slide frame 3 and the second slide frame 2 are configured to be slidable along the fixed rail 1. The drawer-type door D and the housing case are supported by the first slide frame 3 and are configured to slide together with the first slide frame 3. Further, in the present embodiment, the distance between the fully closed position P and the fully opened position Q is about 50 cm, and the pull-out door D is slidable in the range of 0 cm or more and about 50 cm or less along the opening/closing direction. It is configured. Below, each part which comprises the slide opening/closing mechanism 100 is demonstrated.

As shown in FIG. 3, the fixed rail 1 has a plate shape extending along the longitudinal direction that is the opening/closing direction. One side surface 11 of the fixed rail 1 is fixedly attached to the side wall of the refrigerator body B. The other side surface 12 is provided with a first guide portion 13 that guides the first slide frame 3 along the opening/closing direction and a second guide portion 14 that guides the second slide frame 2 along the opening/closing direction. There is.

The first guide portion 13 includes a first guide surface 131 with which a first rolling element 32 of the first slide frame 3 described later comes into contact, and a guide roller 132 that comes into contact with the guided surface 31 of the first slide frame 3.

The first guide surface 131 is a plane parallel to the direction perpendicular to the side wall of the refrigerator main body B, and is formed in the lower portion of the fixed rail 1 so as to extend along the opening/closing direction. The first guide surface 131 is the first main guide surface 131a that is mainly in contact with the first rolling element 32 during the opening/closing operation of the drawer type door D, and the first rolling surface D when the drawer type door D in the fully open position Q is closed. And a riding surface 131b for riding the moving body 32 on the fixed rail 1. The first guide surface 131 is formed so as to face upward.

As shown in (a) of FIG. 3 and FIG. 4, the fixed rail 1 is slightly inclined with respect to the refrigerator main body B so that the first main guide surface 131a is inclined downward toward the inner side in the opening/closing direction. Attached. On the other hand, the riding surface 131b is formed to incline at a downward slope toward the pulling side in the opening/closing direction. The riding surface 131b is provided closer to the pulling side than the first main guide surface 131a along the opening/closing direction. Specifically, it is provided from the end of the first main guide surface 131a on the pull side to the end of the fixed rail 1 on the pull side.

At the end of the first guide portion 13 on the depth side, a stopper 133 made of an elastic body that limits the movement of the first slide frame 3 to the depth side is provided. The stopper 133 is formed so as to project from the side surface 12, contacts the first rolling element 32 rolling on the first guide surface 131, and stops the first rolling element 32.

The guide roller 132 is provided above the end of the fixed rail 1 on the pulling side, and slidably supports the first slide frame 3. The guide roller 132 is, for example, a bearing roller or the like having a rotation axis perpendicular to the side wall of the refrigerator body B.

The 2nd guide part 14 is provided with the 2nd guide surface 141 with which the 2nd rolling element 22 of the 2nd slide frame 2 mentioned later contacts.

The second guide surface 141 is a plane parallel to the direction perpendicular to the side wall of the refrigerator main body B, and the fixed rail 1 is attached to the refrigerator main body B so as to extend along the opening/closing direction. The 2nd guide surface 141 contains the 2nd main guide surface 141a which mainly contacts the 2nd rolling element 22 at the time of opening-and-closing operation of drawer type door D. The second guide surface 141 is formed so as to face upward.

Two stoppers 142 and 143 that limit the movement of the second slide frame 2 in the opening/closing direction are provided at both ends of the second guide portion 14 along the opening/closing direction. Each of the stoppers 142 and 143 is made of an elastic body, is formed so as to project from the side surface 12, contacts the second rolling element 22 rolling on the second guide surface 141, and stops the second rolling element 22. The stopper 143 is formed by cutting and raising a part of the side surface 12 of the fixed rail 1 toward the housing case C side.

As shown in FIG. 5, the second slide frame 2 extends along the longitudinal direction which is the opening/closing direction. The second slide frame 2 is provided with an auxiliary guide portion 21 that guides the first slide frame 3 along the opening/closing direction and a second rolling element 22 that rolls on the second guide surface 141.

The auxiliary guide portion 21 includes an auxiliary guide surface 211 with which the auxiliary rolling element of the first slide frame 3 comes into contact. The auxiliary guide surface 211 is a flat surface parallel to the direction perpendicular to the side wall of the refrigerator body B, and is formed to extend along the opening/closing direction. The auxiliary guide surface 211 is formed so as to face upward.

A first contact portion 212 and a second contact portion 213 that come into contact with the auxiliary rolling elements are provided at both ends of the auxiliary guide portion 21 along the opening/closing direction. Both the first contact portion 212 and the second contact portion 213 are formed so as to project on the auxiliary guide surface 211. The 1st contact part 212 is provided in the back side edge part of the auxiliary guide part 21, contacts the 1st auxiliary rolling element 33 rolling toward the depth side on the auxiliary guide surface 211, and stops this. The second abutting portion 213 is provided at the end portion on the pull tab side, contacts the second auxiliary rolling element 34 rolling on the auxiliary guide surface 211 toward the pull tab side, and stops the second auxiliary rolling element 34.

The 2nd rolling element 22 is provided in the lower part of the depth side end part of the 2nd slide frame 2, and has a rotating shaft perpendicular|vertical to the side wall of the refrigerator main body B, for example, is a bearing roller etc.

As shown in FIG. 6, the first slide frame 3 is a plate-like member that extends along the longitudinal direction that is the opening/closing direction. The first slide frame 3 has a guided surface 31 that comes into contact with the guide rollers 132 of the fixed rail 1, a first rolling element 32 that comes into contact with the first guide surface 131 of the fixed rail 1, and an auxiliary of the second slide frame 2. A first auxiliary rolling element 33 and a second auxiliary rolling element 34 that contact the guide surface 211 are provided.

The guided surface 31 is provided at the upper end of one side surface on the refrigerator main body B side so as to face downward. Specifically, the guided surface 31 is a plane parallel to the direction perpendicular to the side wall of the refrigerator body B, and is formed so as to extend along the opening/closing direction.

Each of the first rolling element 32, the first auxiliary rolling element 33, and the second auxiliary rolling element 34 is, for example, a bearing roller or the like having a rotation axis perpendicular to the side wall of the refrigerator body B. The first rolling element 32 is provided at the lower end of the first slide frame 3. The first auxiliary rolling element 33 and the second auxiliary rolling element 34 are provided on the back side of the first rolling element 32 and above the first rolling element 32. The first auxiliary rolling element 33 is provided on the back side of the second auxiliary rolling element 34.

Thus, in the refrigerator 200 of the present embodiment, the slide opening/closing mechanism 100 includes the retracting mechanism 4 that retracts the pull-out door D at the half-open position R between the fully closed position P and the fully open position Q to the fully closed position P. There is. Specifically, this retracting mechanism 4 is provided on the first rolling element 32 provided on the first slide frame 3 and the fixed rail 1, and is in contact with the first rolling element 32, and the pull-out door D is in the half-open position R. And an inclined retracting surface 41 for retracting to the fully closed position P. The half-open position R means a position where the pull-out door D is pulled out from the fully closed position P within a range of more than 0 cm and about 3 cm or less.

The pull-in surface 41 is a plane parallel to the direction perpendicular to the side wall of the refrigerator main body B, and is formed on the first guide surface 131 so as to extend along the opening/closing direction. As shown in FIG. 4B, the pull-in surface 41 is provided on the back side of the first main guide surface 131a along the opening/closing direction. The pull-in surface 41 is formed continuously from the end portion of the first main guide surface 131a on the rear side in the opening/closing direction to the stopper 133. The pull-in surface 41 is an inclined surface formed on the fixed rail 1 so as to incline at a downward slope toward the inner side in the opening/closing direction. The pull-in surface 41 is formed so as to incline downward with respect to the first main guide surface 131a toward the inner side in the opening/closing direction. Specifically, the retracting surface 41 has its descending slope angle (that is, the horizontal plane and the retracting surface 41 so that the first slide frame 3 is retracted to the depth side along the opening/closing direction by the load applied to the first rolling element 32. The angle formed by and is set. Here, the downward slope angle is formed to be 3° or more.

The slide opening/closing mechanism 100 of the present embodiment further includes an auxiliary retracting mechanism 5 that retracts the second slide frame 2 toward the depth side along the opening/closing direction. Specifically, the auxiliary pull-in mechanism 5 is provided on the second rolling element 22 provided on the second slide frame 2 and the fixed rail 1, and comes into contact with the second rolling element 22 to move the second slide frame 2 to the depth side. And an auxiliary pull-in surface 51 for pulling in.

The auxiliary pull-in surface 51 is a plane parallel to the direction perpendicular to the side wall of the refrigerator main body B, and is formed on the second guide surface 141 so as to extend along the opening/closing direction. As shown in FIG. 3, the auxiliary pull-in surface 51 is provided on the back side of the second main guide surface 141a along the opening/closing direction. More specifically, the auxiliary pull-in surface 51 is formed continuously from the end of the second main guide surface 141a on the rear side in the opening/closing direction to the stopper 143. The auxiliary drawing surface 51 is an inclined surface that is formed so as to incline downward toward the inner side in the opening/closing direction. As shown in FIG. 4C, the auxiliary pull-in surface 51 is formed so as to incline downward with respect to the second main guide surface 141a toward the rear side in the opening/closing direction. Specifically, the auxiliary retraction surface 51 has its downward slope angle (that is, the horizontal plane and the auxiliary retraction surface) so that the second slide frame 2 is retracted toward the depth side along the opening/closing direction by the load applied to the second rolling element 22. The angle formed by the surface 51) is set. Here, the downward slope angle is formed to be 3° or more.

The pull-in surface 41 and the auxiliary pull-in surface 51 are formed so that their lengths along the respective opening/closing directions and the descending gradient angles are equal. The lengths of the drawing surface 41 and the auxiliary drawing surface 51 in the opening/closing direction are preferably 4 cm or more and 6 cm or less. The retracting surface 41 and the auxiliary retracting surface 51 are the distances between the ends on the pulling side along the opening/closing direction (that is, the boundary between the first main guide surface 131a and the retracting surface 41, and the second main guide surface). (A distance along the opening/closing direction between the boundary between 141a and the auxiliary retracting surface 51) is between the first rolling element 32 and the second rolling element 22 in the state where the pull-out door D is in the fully closed position P. It is formed to be equal to the distance.

The slide opening/closing mechanism 100 of the present embodiment also includes an inclined surface 31a formed so that the guided surface 31 of the first slide frame 3 inclines at a downward slope toward the inner side in the opening/closing direction. The inclined surface 31a is provided at the end of the guided surface 31 on the pulling side in the opening/closing direction.

The inclined surface 31a and the pull-in surface 41 are formed so that the length along the opening/closing direction and the descending gradient angle are equal. Further, in the inclined surface 31 a and the drawing surface 41, the distance along the opening/closing direction between the first rolling element 32 and the end of the inclined surface 31 a on the depth side is the guide roller 132 and the drawing side of the drawing surface 41. Are formed so as to be equal in distance in the opening/closing direction to the ends of the.

Further, in the refrigerator 200 of the present embodiment, when the first slide frame 3 is slid to the puller side by a predetermined distance or more with respect to the fixed rail 1, the first slide frame 3 is moved with respect to the second slide frame 2. It is configured to incline downward toward the pull tab side. Specifically, the first slide frame 3 is slid toward the pull tab side with respect to the fixed rail 1 by a predetermined distance or more, and the first rolling element 32 is located closer to the pull tab than the pull side end of the first guide surface 131. In the state, the line connecting the centers of the first auxiliary rolling element 33 and the second auxiliary rolling element 34 is configured to incline downward with respect to the auxiliary guide surface 211 toward the pull tab.

Next, the operation of the slide opening/closing mechanism 100 when sliding the pull-out door D of the refrigerator 200 of the present embodiment configured as described above between the fully closed position P and the fully open position Q will be described. For simplification of description, only the slide opening/closing mechanism 100 is shown, and other members are omitted.

<Drawing operation>
First, the operation of pulling the pull-out door D at the fully closed position P to the fully open position Q will be described. As shown in FIG. 7A, when the pull-out door D is in the fully closed position P, the first rolling element 32 is positioned so as to come into contact with the stopper 133 at the end portion on the depth side of the first guide surface 131. , The second rolling element 22 is positioned so as to come into contact with the stopper 143 at the end on the depth side of the auxiliary pull-in surface 51, and the first auxiliary rolling element 33 makes the first contact at the edge on the depth side of the auxiliary guide surface 211. It is located so as to contact the portion 212.

When the pull-out door D is pulled out to the pull side, the first slide frame 3 slides toward the pull side in the opening/closing direction before the second slide frame 2. From the start of the sliding movement of the first slide frame 3 to the contact of the second auxiliary rolling element 34 with the second contact portion 213 at the end of the auxiliary guide surface 211 on the pulling side, the second slide frame 2 Does not slide, and only the first slide frame 3 slides toward the pulling side ((b) of FIG. 7).

When the second auxiliary rolling element 34 comes into contact with the second contact portion 213 at the end portion of the auxiliary guide surface 211 on the pulling side, and further pulls out the pull-out door D, the second auxiliary rolling member comes into contact with the second contact portion 213. As it is pulled out by the moving body 34, the second slide frame 2 slides toward the pulling side. After that, the first slide frame 3 and the second slide frame 2 slide and move relative to the fixed rail 1 toward the pulling side, and the pull-out door D is pulled out to the fully open position Q. In this state, the second auxiliary rolling element 34 is positioned so as to contact the second contact portion 213 at the end of the auxiliary guide surface 211 on the pulling side, and the second rolling element 22 is positioned on the pulling side of the auxiliary pulling surface 51. It is located so as to contact the stopper 142 at the end portion (FIG. 7C).

<Pushing operation>
Next, the operation of pushing the pull-out door D at the fully open position Q to the fully closed position P will be described.
As shown in (a) of FIG. 8, when the pull-out door D is in the fully open position Q and the pull-out door D is pushed toward the depth side, the first slide frame 3 comes before the second slide frame 2. Slide and move toward the depth side in the opening/closing direction. From the start of the sliding movement of the first slide frame 3 to the contact of the first auxiliary rolling element 33 with the first contact portion 212 at the end of the auxiliary guide surface 211 on the rear side, the second slide frame 2 Does not slide, and only the first slide frame 3 slides toward the depth side ((b) of FIG. 8).

The first auxiliary rolling element 33 comes into contact with the first contact portion 212 when the rear pull-out door D is further pushed after the first auxiliary rolling element 33 comes into contact with the first contact portion 212 at the end portion on the depth side of the auxiliary guide surface 211. The second slide frame 2 slides to the depth side as being pushed by the moving body 33. After that, both the first slide frame 3 and the second slide frame 2 slide rearward with respect to the fixed rail 1, and the drawer type door D is pushed to the fully closed position P ((c) of FIG. 8).

Next, the retracting operation of the drawer type door D by the retracting mechanism 4 included in the slide opening/closing mechanism 100 will be described.
<Retracting operation when withdrawing>
When the user slightly pulls out the pull-out door D at the fully closed position P to the half-opened position R, the first rolling element 32 comes into contact with the pulling side of the pulling surface 41 and is positioned (( in FIG. 9). a)). Here, the second slide frame 2 does not move, and only the first slide frame 3 slides toward the pull tab. When the user releases the pull-out door D in this state, the first rolling element 32 is moved in the opening/closing direction along the pull-in surface 41 by the load applied from the first slide frame 3 or the pull-out door D. Then, it rolls toward the side and comes into contact with the stopper 133 at the end portion on the rear side of the pulling surface 41 to stop ((b) of FIG. 9). In this way, the pull-out door D that was in the half-open position R is pulled to the fully closed position P, and half-opening is prevented.

<Retraction operation when pushing>
When the user pushes the pull-out door D at the fully open position Q into the depth side, the first slide frame 3 slides toward the depth side in the opening/closing direction while pressing the second slide frame 2. When the user pushes the pull-out door D to the half-open position R, the first rolling element 32 comes into contact with the pulling side of the pulling surface 41 and the second rolling element 22 comes into contact with the pulling side of the auxiliary pulling surface 51. To be positioned ((a) of FIG. 10). When the user releases the pull-out door D in this state, the first rolling element 32 is moved in the opening/closing direction along the pull-in surface 41 by the load applied from the first slide frame 3 or the pull-out door D. And then stops at the end of the drawing surface 41 on the inner side of the drawing surface 41 by contacting the stopper 133 (FIG. 10B). At the same time, the second rolling element 22 rolls toward the inner side in the opening/closing direction along the auxiliary retracting surface 51 by the load applied from the second slide frame 2, the first slide frame 3, etc., and the auxiliary retracting surface 51 At the end portion on the depth side of the sheet, it comes into contact with the stopper 143 and stops. In this way, the pull-out door D that was in the half-open position R is pulled to the fully closed position P, and half-opening is prevented.

<Effect of this embodiment>
According to the refrigerator 200 of the present embodiment configured as described above, the slide opening/closing mechanism 100 contacts the first rolling element 32 provided on the first slide frame 3 and the first rolling element 32 to the half-open position R. Since the certain retractable door D is provided with the inclined retracting surface 41 that retracts to the fully closed position P, when the retractable door D is at the half-opened position R, the first rolling element 32 rolls on the retractable surface 41. The first slide frame 3 slides, and the pull-out door D is pulled into the fully closed position P. Further, since the slide opening/closing mechanism 100 is a multi-stage type having the second slide frame 2 interposed between the fixed rail 1 and the first slide frame 3, it can be used for a large refrigerator having a large capacity storage case C. It can be preferably used. As a result, it is possible to prevent the drawer type door D from half-opening. Moreover, since the pull-out door D is pulled in by its own weight by utilizing the inclination of the pull-in surface 41 instead of the restoring force of the spring, the pull-out door D does not become heavy as the pull-out door D is pulled out. Can be pulled out easily.

<Other modified embodiments>
The present invention is not limited to the above embodiment.

The slide opening/closing mechanism 100 of the above embodiment is provided between the left and right inner side walls of the refrigerator main body B and the housing case, but is not limited to this. In another embodiment, the slide opening/closing mechanism 100 may be provided between the bottom surface of the refrigerator body B and the housing case.

In addition, modifications and combinations of various embodiments may be made without departing from the spirit of the present invention.

200... Refrigerator 100... Slide opening/closing mechanism 1... Fixed rail 2... Second slide frame 3... First slide frame 32... First rolling element 4... Retracting mechanism 41. ..Receiving surface B... Refrigerator body S... Storage room D... Draw-out door C... Storage case fully closed position... P
Fully open position...Q
Half-open position...R

Claims (10)

Provided between a refrigerator main body having a storage chamber and a housing case provided in the storage chamber, the pull-out door is fully opened with respect to the storage chamber and fully closed with respect to the storage chamber. A slide opening/closing mechanism that slides in the opening/closing direction between the closed position,
A fixed rail provided on the refrigerator body side,
A first slide frame which is provided on the side of the housing case, supports the drawer type door, and slides along the fixed rail;
A second slide frame that is interposed between the fixed rail and the first slide frame and slides along the fixed rail;
A first rolling element provided on the first slide frame;
A sloped retracting surface provided on the fixed rail, in contact with the first rolling element, and retracting the pull-out door at the half-open position between the fully open position and the fully closed position to the fully closed position; A slide opening/closing mechanism. A second rolling element provided on the second slide frame;
The slide opening/closing mechanism according to claim 1, further comprising: an inclined auxiliary drawing surface provided on the fixed rail and in contact with the second rolling element to draw the second slide frame toward a rear side in the opening/closing direction. The stopper made of an elastic body for restricting the movement of the second rolling element to the depth side is provided at the depth side end of the auxiliary pull-in surface of the fixed rail. Slide opening/closing mechanism. The slide opening/closing mechanism according to claim 3, wherein the stopper is formed by cutting and raising a part of a side surface of the fixed rail toward the housing case. The slide opening/closing mechanism according to any one of claims 1 to 4, wherein an end surface of the fixed rail on the pulling side in the opening/closing direction is formed with a riding surface that inclines at a downward slope toward the pulling side. .. The fixed rail is provided with a guide roller that slidably supports the first slide frame,
The first slide frame is provided with a guided surface that contacts the guide roller and faces downward.
The slide according to any one of claims 1 to 5, wherein the guided surface includes an inclined surface inclined at a downward slope toward a depth side in the opening/closing direction at an end portion on the pulling side in the opening/closing direction. Opening and closing mechanism. The first slide frame includes auxiliary rolling elements,
The second slide frame is provided on an auxiliary guide surface that guides the auxiliary rolling element along the opening/closing direction, and a back side end portion of the auxiliary guide surface in the opening/closing direction that contacts the auxiliary rolling element. The slide opening/closing mechanism according to claim 1, further comprising a contact portion. When the first slide frame is slid toward the pulling side in the opening/closing direction by a predetermined distance or more with respect to the fixed rail,
The slide opening/closing mechanism according to any one of claims 1 to 7, wherein the first slide frame is configured to incline at a downward slope toward the puller side with respect to the second slide frame. The slide opening/closing mechanism according to claim 7, wherein a plurality of the auxiliary rolling elements are provided, and a line connecting the centers of the plurality of auxiliary rolling elements intersects with an auxiliary guide surface of the second slide frame. .. A refrigerator comprising the slide opening/closing mechanism according to claim 1.