WO2010100911A1

WO2010100911A1 - Refrigerator

Info

Publication number: WO2010100911A1
Application number: PCT/JP2010/001447
Authority: WO
Inventors: 栗田潤一; 山口�太郎
Original assignee: パナソニック株式会社
Priority date: 2009-03-04
Filing date: 2010-03-03
Publication date: 2010-09-10
Also published as: EP2405215A1; EP2405215A4; JP2010203695A; US20110315694A1; CN101825382A; CN101825382B

Abstract

Disclosed is a refrigerator (100) provided with a heat insulation housing (150) forming a storage chamber, the front surface of which has an opening; and a main door (111) which covers the opening of the storage chamber so as to be openable and closable. The main door (111) is comprised of an opening (113) provided in the front surface of the main door (111); a supplementary door (112) which rotates to cover the opening (113) so as to be openable and closable; a shaft member (140) which rotatably supports the supplementary door (112); a locking member (141) provided across a space between the side face of the supplementary door (112) in the axial direction of the shaft member (140) and the inner surface of the opening (113), which is opposed to the side face of the supplementary door; and a control member (180) which abuts with the locking member (141) when the supplementary door (112) is opened, so that the turning angle of the supplementary door (112) is controlled at a predetermined angle.

Description

refrigerator

The present invention relates to a refrigerator, and more particularly, to a door structure that can freely open and close a storage room.

Conventionally, there is a refrigerator in which a door (hereinafter referred to as “main door”) that opens and closes a storage room such as a refrigerator room is provided with an opening for facilitating taking in and out of food.

In such a refrigerator, the main door is provided with a door (hereinafter referred to as “sub-door”) that closes and opens the opening. The user of the refrigerator can take out the food stored behind the main door by opening the sub door. In addition, food or the like can be stored behind the main door.

That is, in such a refrigerator, the user can put in and out foods by opening the sub door without opening the main door.

Also, the sub door has, for example, a pivot shaft extending left and right at the lower end, and can be opened so as to be tilted forward about the pivot shaft.

When the secondary door is opened in this way, it is desirable that the secondary door be maintained so that the inner surface (the surface on the storage chamber side when closed) is substantially horizontal.

This is because the inner surface of the auxiliary door is used as a table for temporarily placing food taken out of the storage room, for example.

Therefore, for example, there are refrigerators equipped with arms for regulating the rotation angle of the sub door on the left and right sides of the sub door.

There is also a refrigerator that regulates the rotation angle when the sub door is opened by devising the structure of the sub door and the opening without providing such an arm (see, for example, Patent Document 1).

FIG. 14 is a cross-sectional view showing an example of a conventional structure for regulating the rotation angle of the sub door.

As shown in FIG. 14, the main door 312 has a sub door 330. The sub door 330 rotates around a shaft member 334 that forms a rotation axis.

Also, a first stopper 345 is provided at the lower end of the sub door 330, and a second stopper 355 is provided at the lower part of the opening of the main door 312.

When the sub door 330 is opened, the first stopper 345 comes into contact with the second stopper 355. As a result, the rotation angle of the sub door 330 is restricted to approximately 90 degrees.

As described above, the first stopper 345 is provided in a direction perpendicular to the rotation axis of the sub door 330, and the second stopper 355 is provided below the opening of the main door 312 so as to contact the first stopper 345. Thereby, the rotation angle when the sub door 330 is opened can be regulated without using the left and right areas of the sub door 330.

JP 2003-207263 A

However, in the case of the above-described conventional refrigerator, the rotation trajectory of the sub door 330 including the first stopper 345 is larger than that without the first stopper 345. Therefore, a space 360 for turning the first stopper 345 is always required behind the turning shaft of the sub door 330.

In the space 360, when the sub door 330 is closed, there is almost no air flow, so that the air is likely to stagnate, and as a result, condensation is likely to occur.

In this case, for example, it is conceivable to prevent condensation by arranging a heating element such as a heat radiating tube in the vicinity of the space 360. However, since the space 360 is located close to the storage room, the arrangement of the heating elements is not realistic from the viewpoint of the cooling efficiency of the storage room.

An object of the present invention is to provide a refrigerator that includes a main door having a sub door in consideration of the above-described conventional problems and restricts the rotation angle of the sub door without affecting the cooling efficiency. To do.

In order to solve the above-described conventional problems, the refrigerator of the present invention is a refrigerator including a heat insulating box that forms a storage chamber whose front surface opens, and a main door that opens and closes the opening of the storage chamber. The main door includes an opening provided on a front surface of the main door, a sub door that pivotally closes the opening by opening, a shaft member that rotatably supports the sub door, Locking provided so as to cross between the sub-door side surface, which is the side surface in the axial direction of the shaft member, and the inner surface of the opening, which is the inner side surface of the opening, facing the side surface of the sub-door. And a regulating member that regulates the rotation angle of the sub door to a predetermined angle by contacting the locking member when the sub door is opened.

With this configuration, the locking member that regulates the rotation angle of the sub door is provided so as to cross between the side surface of the sub door and the inner side surface of the opening that are adjacent to each other. That is, the locking member is provided in parallel with the axial direction of the shaft member, for example. Thereby, the rotation locus | trajectory of a subdoor does not become large with a latching member like the conventional refrigerator.

As a result, it is not necessary to provide a space for turning the locking member behind the turning shaft. That is, in the refrigerator of the present invention, it is not necessary to provide a space where condensation is likely to occur around the secondary door, and the rotation angle of the secondary door can be reliably regulated.

Further, the locking member may be provided so as to protrude from the side surface of the sub door, and may be rotated along with the rotation of the sub door, and the restriction member may be provided on the inner surface of the opening.

Further, the locking member may be provided so as to protrude from the inner surface of the opening, and the restricting member may be provided on the side surface of the sub door, and may be rotated as the sub door is rotated.

Thus, it is sufficient that either one of the locking member and the regulating member is disposed on the sub-door and the other is disposed on the inner surface of the opening. In other words, the arrangement position of the locking member and the regulating member may be a position where the rotation angle of the sub door can be regulated by contacting the locking member and the regulating member.

The main door may further include a reinforcing member that holds the locking member and the shaft member to suppress a change in posture of the locking member with respect to the shaft member.

This configuration prevents the relative positional relationship between the locking member and the shaft member from changing, and ensures the stability of the opening / closing operation of the sub door.

The main door may further include a damper device that suppresses the rotational speed of the sub door.

This configuration prevents the sub door from opening abruptly and prevents excessive force from being applied to the locking member and the shaft member when the sub door is opened. The life of the structure is extended.

The main door further includes an elastic member that urges the shaft member and the locking member movable in the axial direction toward the inner surface of the opening or toward the sub door. The shaft member and the locking member may be extracted from the auxiliary door or the inner surface of the opening by being moved against the urging force of the elastic member.

This configuration facilitates removal of the subdoor from the refrigerator and attachment of the subdoor to the refrigerator. That is, it becomes easy for the user of the refrigerator to clean the vicinity of the opening of the sub door and the main door.

The present invention can provide a refrigerator that includes a main door having a sub-door and regulates the rotation angle of the sub-door without affecting the cooling efficiency.

FIG. 1 is a perspective view showing the appearance of the refrigerator in the embodiment of the present invention. FIG. 2 is a perspective view showing an appearance of the refrigerator in which the first sub door and the second sub door are opened. FIG. 3 is a perspective view showing an appearance of the refrigerator in which the first main door and the second main door are opened. FIG. 4 is a partial perspective view showing a state in which the first sub door is opened. FIG. 5 is a perspective view showing a structure around a shaft member in the refrigerator according to the embodiment. FIG. 6 is a diagram illustrating a state in which the reinforcing member that holds the shaft member and the locking member rotates. FIG. 7 is a perspective view showing the opening / closing structure of the first sub door. FIG. 8 is a right side view showing the opening / closing structure of the first sub door. FIG. 9 is a cross-sectional view showing an open state and a closed state of the first sub door in the embodiment. FIG. 10A is a diagram illustrating another example of the arrangement positions of the locking member and the restriction groove, and FIG. 10B is a diagram illustrating another example of the arrangement position of the locking member and the shaft member. is there. FIG. 11 is a diagram illustrating an example of a member that serves both as a shaft member and a locking member. FIG. 12A is a block diagram showing a control system of the lighting unit in the refrigerator of the embodiment, and FIG. 12B shows the arrangement position of each element shown in FIG. 12A in the refrigerator. It is a schematic diagram which shows an example. FIG. 13: is a flowchart which shows the flow of the process which concerns on the alert notification which the refrigerator of embodiment performs. FIG. 14 is a cross-sectional view showing an example of a conventional structure for regulating the rotation angle of the sub door.

Hereinafter, embodiments of a refrigerator according to the present invention will be described with reference to the drawings.

First, the basic configuration of the refrigerator 100 according to the embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view showing an external appearance of a refrigerator 100 according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of the refrigerator 100 in which the first sub door 112 and the second sub door 122 are opened.

FIG. 3 is a perspective view showing the appearance of the refrigerator 100 with the first main door 111 and the second main door 121 opened.

Refrigerator 100 of the present embodiment is a device that stores stored items stored inward by refrigeration or freezing. The refrigerator 100 is a refrigerator in which an intermediate portion in the width direction is divided by a wall and different types of storage rooms are provided on the left and right. Such a refrigerator is called, for example, a side-by-side (SBS) refrigerator.

The refrigerator 100 includes a heat insulating box 150, a first main door 111, and a second main door 121 as shown in these drawings.

The first main door 111 has an opening 113 provided on the front surface and a first sub door 112 that closes the opening 113 so as to be freely opened and closed. The second main door 121 has a receiving port 123 provided on the front surface and a second sub door 122 that closes the receiving port 123 so as to be freely opened and closed.

The first main door 111 is a door that opens and closes an opening of a refrigerator compartment arranged on the right side toward the heat insulating box 150. In the case of the present embodiment, the first main door 111 is insulated by a hinge (not shown) by a hinge (not shown) so as to pivot about a pivot shaft extending in the vertical direction in front of the right wall of the thermal insulation box 150. It is attached to the body 150. Moreover, the 1st main door 111 is a rectangle long in an up-down direction, is arrange | positioned from the upper part to the lower part of the refrigerator 100, and the said rotating shaft has passed the right end edge part of the 1st main door 111. As shown in FIG.

The second main door 121 is a door that freely opens and closes the opening of the freezer compartment disposed on the left side toward the heat insulating box 150. In the case of the present embodiment, the second main door 121 is insulated by a hinge (not shown) by a hinge (not shown) so as to pivot about a pivot shaft extending in the vertical direction in front of the left wall of the thermal insulation box 150. It is attached to the body 150. The second main door 121 is a rectangle that is long in the vertical direction, and is disposed from the upper part to the lower part of the refrigerator 100, and the rotation shaft passes through the left end edge of the second main door 121.

The opening 113 is a part that forms a hole penetrating the first main door 111 in the thickness direction. The user of the refrigerator 100 can take out the stored item stored behind the first main door 111 through the opening 113 and store the stored item behind the first main door 111.

The first sub door 112 is a door that closes the opening 113 so as to be freely opened and closed. In the case of the present embodiment, the first sub door 112 is attached to the first main door 111 by a shaft member so as to rotate around a rotation axis extending in the left-right direction at the lower end edge of the opening 113. . The pivot shaft passes through the lower edge of the first sub door 112. The shaft member will be described later with reference to FIG.

The second sub door 122 is a door that opens and closes the receiving port 123 that receives ice supplied from the inside of the refrigerator 100.

Further, a control board for controlling the operation of the refrigerator 100 is housed in the upper part of the heat insulation box 150, and a board cover 158 for closing the housing space is attached.

The inner space of the heat insulation box 150 is divided into left and right by a partition wall 153, thereby forming a right refrigerator compartment and a left refrigerator compartment.

Each of the refrigerator compartment and the freezer compartment is provided with a plurality of storage containers 162 for storing food and the like and shelf boards 163 for placing food and the like.

Next, a mechanical structure for opening and closing the first sub door 112 in the refrigerator 100 (hereinafter referred to as “opening and closing structure”) will be described with reference to FIGS.

The opening / closing structure of the first sub door 112 and the opening / closing structure of the second sub door 122 are basically the same. Therefore, below, it demonstrates centering on the 1st subdoor 112, and the description about the 2nd subdoor 122 is abbreviate | omitted.

FIG. 4 is a partial perspective view showing a state in which the first sub door 112 is opened.

As shown in FIG. 4, the first sub door 112 rotates until the inner surface (the upper surface in FIG. 4) is substantially horizontal and is maintained at that angle.

Further, a push latch 130 is provided on the upper portion of the opening 113. The protrusion provided on the upper surface of the first sub door 112 is engaged with the push latch 130, whereby the first sub door 112 is maintained in the closed state. Moreover, when the upper part of the 1st subdoor 112 is pushed in, engagement with the said protrusion and the push latch 130 is cancelled | released, and the 1st subdoor 112 is opened.

Further, a sub door switch 131 is provided beside the push latch 130. Whether or not the first sub door 112 is closed is detected based on whether or not the sub door switch 131 is pushed in. The sub-door detection unit that performs this detection will be described later with reference to FIG.

FIG. 5 is a perspective view showing a structure around the shaft member 140 in the refrigerator 100 according to the embodiment.

In addition, in FIG. 5, the 1st subdoor 112 and the 1st main door 111 are notched, and the structure of the shaft member 140 periphery is shown.

As shown in FIG. 5, a rotating frame 170 that is a component of the first sub door 112 and a fixed frame 180 fixed to the first main door 111 are connected by a shaft member 140.

In the present embodiment, both the rotating frame 170 and the fixed frame 180 are made of metal. The shaft member 140 is fixed so as not to rotate with respect to the fixed frame 180.

The shaft member 140 is connected to a damper device 135 that suppresses the rotation speed of the first sub door 112 via a joint member 136. The main body portion of the damper device 135 is fixed to the first sub door 112.

That is, when the first sub door 112 is opened, the damper device 135 and the shaft member 140 rotate relative to each other, and the damper device 135 causes a force in a direction to suppress the rotation speed of the first sub door 112. The first sub door 112 is given.

The first main door 111 has a locking member 141. The locking member 141 is between the sub door side surface that is the side surface of the first sub door 112 in the axial direction of the shaft member 140 and the inner surface of the opening 113 that faces the sub door side surface. It is provided so as to cross.

In the present embodiment, as shown in FIG. 5, the locking member 141 is provided so as to protrude from the side surface of the first sub door 112 and rotates as the first sub door 112 rotates.

The end of the locking member 141 opposite to the first sub door 112 is inserted into a restriction groove 181 of the fixed frame 180.

When the first sub door 112 is opened, the locking member 141 attached to the first sub door 112 rotates to reach the end edge on the near side of the restriction groove 181 and comes into contact with the end edge. , Movement is restricted.

That is, the rotation angle of the first sub door 112 is restricted to a predetermined angle (about 90 degrees in the present embodiment) by the fixed frame 180. The fixed frame 180 is an example of a regulating member in the refrigerator of the present invention.

Further, the shaft member 140 and the locking member 141 are held by a reinforcing member 190 that is a metal block.

FIG. 6 is a diagram illustrating a state in which the reinforcing member 190 that holds the shaft member 140 and the locking member 141 rotates.

In FIG. 6, the rotation frame 170, the fixed frame 180, and the like are not shown in order to clearly show the reinforcing member 190.

In the present embodiment, the reinforcing member 190 is provided with a hole for holding the shaft member 140 and a hole for holding the locking member 141. The shaft member 140 and the locking member 141 are held by the reinforcing member 190 by being inserted into the respective holes. Thereby, the change of the attitude | position with respect to the shaft member 140 of the locking member 141 is suppressed.

Specifically, the locking member 141 is a metal rod, and the locking member 141 is held by the reinforcing member 190 substantially parallel to the shaft member 140 as shown in FIG.

In this state, when the first sub door 112 is opened and the locking member 141 comes into contact with the terminal edge of the restriction groove 181, a force that causes the locking member 141 to tilt with respect to the shaft member 140 is applied to the locking member 141 and Acts on the shaft member 140. That is, a force that twists the locking member 141 and the shaft member 140 acts on the locking member 141 and the shaft member 140.

However, both the shaft member 140 and the locking member 141 are held by the reinforcing member 190. Therefore, the occurrence of such a twist is prevented, and the stability of the opening / closing operation of the first sub door 112 is ensured.

Note that both or one of the shaft member 140 and the locking member 141 may be formed integrally with the reinforcing member 190. That is, the reinforcing member 190 may hold both or one of the shaft member 140 and the locking member 141 in a non-detachable manner.

Further, when the reinforcing member 190 and the shaft member 140 are integrally molded, the shaft member 140 cannot rotate with respect to the first sub door 112. In this case, the shaft member 140 may be held by the fixed frame 180 so that the shaft member 140 rotates with respect to the first main door 111.

Specifically, a hole for rotatably supporting the shaft member 140 is provided in the fixed frame 180, and the damper device 135 is provided outside the hole (on the opposite side of the first sub door 112 with the fixed frame 180 interposed therebetween). And the tip of the shaft member 140 and the damper device 135 may be connected.

Further, in FIG. 5, the opening / closing structure of the right end portion of the first sub door 112 is illustrated, but a shaft member or the like is similarly arranged on the left side of the first sub door 112.

FIG. 7 is a perspective view showing the opening / closing structure of the first sub door 112.

FIG. 8 is a right side view showing the opening / closing structure of the first sub door 112.

In these drawings, in order to clearly show the opening / closing structure of the first sub door 112, only the members related to the opening / closing operation of the first sub door 112 are shown, and the first sub door 112 and the first main door 111 are shown. A plate or the like forming the surface is omitted.

7, the turning frame 172 disposed at the left end of the first sub door 112 is connected to the left fixed frame 182 by the shaft member 142.

Further, a locking member 143 is attached to the rotating frame 172, and the left end thereof is inserted into the restriction groove 183 of the fixed frame 182.

Further, both the locking member 143 and the shaft member 142 are held by a reinforcing member 191 that is a metal block.

Thus, the left end portion of the first sub door 112 has the same structure as the right end portion.

Thereby, as shown in FIGS. 7 and 8, the rotation angles of the rotation frames 170 and 172 are restricted to about 90 degrees. That is, the rotation angle of the first sub door 112 is restricted to about 90 degrees.

Note that the locking member 143 and the shaft member 142 are urged by the elastic member 137 via the moving member 144 as shown in FIG. The elastic member 137 is a push spring in the present embodiment.

That is, the shaft member 142 and the locking member 143 are movable in the axial direction of the shaft member 142 and are biased toward the inner surface of the opening.

Thus, normally, the left end portion of the locking member 143 is inserted into the restriction groove 183 existing on the inner surface of the opening, and the left end portion of the shaft member 142 is inserted into the hole of the fixed frame 182.

In this state, for example, when the moving member 144 is pushed rightward by the user, the left end portions of the locking member 143 and the shaft member 142 are extracted from the inner surface of the opening. Accordingly, the first sub door 112 can be detached from the first main door 111 and can be attached to the first main door 111.

The elastic member 137 may be disposed on the left side of the inner surface of the opening so that the elastic member 137 urges the shaft member 142 and the locking member 143 toward the first sub door 112. In this case, the right end portions of the locking member 143 and the shaft member 142 can be extracted from the first sub door 112 by moving the locking member 143 and the shaft member 142 to the left against the biasing force. That is, the first sub door 112 can be attached to and detached from the first main door 111.

As described above, the first sub door 112 is attached to the first main door 111 so as to be openable and detachable. Further, the rotation angle when the first sub door 112 is opened is restricted.

In the present embodiment, as shown in FIG. 8, the locking member 141 attached to the rotating frame 170 contacts the terminal edge of the restriction groove 181 of the fixed frame 180, thereby The rotation angle is restricted to about 90 degrees.

Further, at this time, as shown in FIG. 7, on the left side of the first sub door 112, the locking member 143 contacts the terminal edge of the restriction groove 183 of the fixed frame 182. This also restricts the rotation angle of the first sub door 112 to about 90 degrees.

That is, in the refrigerator 100 of the present embodiment, the locking member 141 (143) extending in the same direction as the axial direction of the first sub door 112, and the restriction groove 181 (183) provided in the fixed frame 180 (182). Thus, the rotation angle of the first sub door 112 is regulated.

That is, the member for restricting the rotation angle of the first sub door 112 (the locking member 141 in the present embodiment) is on the rotation trajectory of the first sub door 112 on a plane perpendicular to the rotation axis. Does not affect.

Thereby, the space which existed in the conventional refrigerator and was provided for the rotation of the subdoor behind the rotation axis | shaft of the subdoor, and there is usually almost no air distribution (for example, the space 360 in FIG. 14). Can be zero or very small.

FIG. 9 is a cross-sectional view showing an open state and a closed state of the first sub door 112 in the embodiment.

As shown in FIG. 9, it is not necessary to provide a space in which the first sub door 112 can be rotated behind the shaft member 140. In other words, there is no need to provide a space where air stagnate like the space 360 in FIG.

Therefore, dew condensation at the lower part of the opening 113 is prevented, and it is not necessary to provide a heating element for the prevention. Moreover, the rotation angle when the 1st subdoor 112 is opened can be controlled reliably.

That is, in the refrigerator 100 of the present embodiment, the rotation angle when the first sub door 112 is opened without affecting the cooling efficiency is set to an angle at which the inner surface of the first sub door 112 is substantially horizontal. Can be regulated.

In the present embodiment, the reinforcing member 190 is provided in the first sub door 112 and holds the shaft member 140 and the locking member 141.

That is, it is assumed that the locking member 141 also rotates as the first sub door 112 rotates. However, a locking member may be fixed to the inner surface of the opening 113 and a restriction groove that contacts the locking member may be provided in the first sub door 112.

FIG. 10A is a diagram showing another example of the arrangement positions of the locking member and the restriction groove.

10A, the reinforcing member 193 that holds the shaft member 140 and has the restriction groove 193a is disposed on the rotation frame 170 of the first sub door 112. As shown in FIG.

Further, a reinforcing member 194 having a shaft hole 194a for holding the shaft member 140 so as not to rotate and a locking member 194b is disposed on the opposite side of the first sub door 112 with the fixed frame 180 interposed therebetween.

In this case, the regulation groove 193a rotates as the first sub door 112 rotates. Further, the rear end edge of the restriction groove 193 a comes into contact with the locking member 194 b fixed to the first main door 111. Thereby, the rotation angle of the 1st subdoor 112 is controlled.

Further, the locking member may be fixed to the first main door 111, the restriction groove may be provided in the first sub door 112, and the shaft member 140 may be installed so as not to rotate with respect to the first sub door 112. .

FIG. 10B is a diagram illustrating another example of the arrangement positions of the locking member and the shaft member.

As shown in FIG. 10B, a reinforcing member 195 having a shaft hole 195a for holding the shaft member 140 so as not to rotate and a regulating groove 195b is disposed on the rotating frame 170 of the first sub door 112. .

Further, a reinforcing member 196 having a locking member 196b and a hole for rotatably holding the shaft member 196a is disposed on the opposite side of the first sub door 112 with the fixed frame 180 interposed therebetween.

Furthermore, a damper device 135 is disposed behind the reinforcing member 194 and connected to the rear end of the shaft member 196a.

In this case, with the rotation of the first sub door 112, the restriction groove 195b rotates, and the rear end edge of the restriction groove 195b comes into contact with the locking member 196b fixed to the first main door 111. Thereby, the rotation angle of the 1st subdoor 112 is controlled.

Further, as the first sub door 112 is rotated, the shaft member 196a that is rotatably held by the reinforcing member 196 is rotated. When the shaft member 196a rotates, the damper device 135 applies a force in a direction to suppress the rotation speed to the shaft member 196a. As a result, the rotation speed of the first sub door 112 is suppressed.

The reinforcing member 195 has a restriction groove 195b and a shaft hole 195a that holds the shaft member 140 so as not to rotate. Therefore, as shown in FIG. 7 and the like, when the locking member 141 rotates together with the first sub door 112, the reinforcing member 195 includes, for example, a restriction groove 181 of the fixed frame 180 and a hole for holding the shaft member 140. It can also be used as a reinforcing member. That is, the reinforcing member 195 can also be used as a reinforcing member that reinforces the regulating member.

In the present embodiment, the shaft member 140 and the locking member 141 are separate bodies, but the functions of these members may be realized by a single member.

FIG. 11 is a diagram illustrating an example of a member that serves both as a shaft member and a locking member.

As shown in FIG. 11, a reinforcing member 197 having a shaft member 197 a is disposed on the rotating frame 170 of the first sub door 112. As shown in FIG. 11, the shaft member 197a has a part of the periphery cut away. Thereby, a locking surface 197b in a direction perpendicular to the axial direction is formed.

Further, a reinforcing member having a shaft hole 198a that rotatably holds the shaft member 197a and restricts the rotation at a predetermined rotation angle on the opposite side of the first sub door 112 with the fixed frame 180 interposed therebetween. 198 is placed.

In this case, the shaft member 197a rotates as the first sub door 112 rotates. Further, the locking surface 197b contacts the contact surface 198b which is a part of the inner surface of the shaft hole 198a. Thereby, the rotation angle of the 1st subdoor 112 is controlled.

Although not shown in FIG. 11, a damper device 135 is disposed behind the reinforcing member 198 and connected to the tip of the shaft member 197a. Thereby, the rotational speed when the 1st subdoor 112 is opened is suppressed.

As described above with reference to FIGS. 10A to 11, the mechanism for rotating the first sub door 112 relative to the first main door 111 and the mechanism for restricting the rotation are shown in FIG. A mechanism other than that shown in FIG. 9 may be used.

Further, the shape of the locking

members

141, 143, 194b and 196b are all rod-shaped, but the shape of the locking members may not be rod-shaped. The locking member crosses between at least one side surface of both side surfaces (left and right side surfaces in the present embodiment) of the first sub door 112 in the direction of the rotation axis and the opening inner surface facing the side surface. The shape is not limited to a specific one.

In addition, the fixed frame 180 which is an example of a regulating member in the refrigerator of the present invention specifically regulates the movement of the locking member 141 by bringing the terminal edge of the regulating groove 181 into contact with the locking member 141. ing. Thereby, the rotation angle of the first sub door 112 is regulated.

However, as long as the movement of the locking member 141 can be restricted, the shape may not be a “groove”. For example, it may be a circular or rectangular hole. Alternatively, a wall that blocks the movement of the locking member 141 may be provided on the fixed frame 180, thereby restricting the movement of the locking member 141.

In short, the first main door 111 has a locking member provided so as to cross between the side surface of the first sub door 112 and the inner surface of the opening that is the inner surface of the opening 113 facing the side surface. And the regulating member which regulates the rotation angle of the 1st subdoor 112 to a predetermined angle by contact | abutting to the said locking member should just be provided.

Thereby, the rotation angle of the first sub door 112 can be regulated without providing a space for the rotation of the locking member behind the rotation shaft of the first sub door 112.

Note that, as described above, the first main door 111 is provided with the sub door switch 131, and the sub door detection unit is configured according to the state of the sub door switch 131, and the sub door detection unit is configured as the first sub door 112. Whether or not is closed can be detected.

Moreover, ON / OFF of the lighting unit installed in the warehouse is controlled depending on whether the first sub door 112 is closed and whether the first main door 111 is closed.

FIG. 12A is a block diagram showing a control system of the lighting unit 240 in the refrigerator 100 of the embodiment.

FIG. 12 (B) is a schematic diagram showing an example of an arrangement position in the refrigerator 100 of each element shown in FIG. 12 (A).

As shown in FIG. 12A, the refrigerator 100 includes a control unit 200, a main door detection unit 210, a sub door detection unit 220, a warning unit 230, and a lighting unit 240.

For example, when the first sub door 112 is opened, the sub door switch 131 (see FIG. 4) that has been pushed in is in a protruding state. Thus, the sub door detection unit 220 detects that the first sub door 112 is not closed or that the first sub door 112 is opened.

When the control unit 200 obtains the detection result, the control unit 200 turns the illumination unit 240 from OFF to ON. Thereby, when the 1st subdoor 112 is opened, the refrigerator compartment is illuminated by the illumination unit 240, and the user can take out the food in the refrigerator compartment and store the food in the refrigerator compartment.

When the first main door 111 is opened, the main door detection unit 210 detects that the first main door 111 is not closed or that the first main door 111 is opened. Moreover, the control part 200 which obtained this detection result turns the illumination unit 240 from OFF to ON.

Here, it is assumed that the first main door 111 is opened and closed while the first main door 111 and the first sub door 112 are both opened. In this case, since the rotation trajectory of the first sub door 112 becomes large, for example, the first sub door 112 may be in contact with an object around the refrigerator 100. Therefore, it can be said that there is a problem from the viewpoint of safety.

Therefore, in the refrigerator 100 of the present embodiment, the first main door 111 and the first sub door 112 are both opened, in other words, the first main door 111 and the first sub door 112 are both closed. If no state is detected, a warning is notified.

FIG. 13 is a flowchart showing a flow of processing related to warning notification performed by the refrigerator 100 of the embodiment.

From the detection results of the main door detection unit 210 and the sub door detection unit 220, the control unit 200 is in a state where the first main door 111 is opened or not closed, and the first sub door 112 is If it is determined that the state is opened or not closed (Yes in S100), the warning unit 230 is instructed to issue a warning.

When the warning unit 230 receives a warning notification instruction from the control unit 200, for example, the first main door 111 and the first sub door 112 are both opened or the first main door 111 is instructed to close. The content to be output is output as a voice (S110).

Moreover, the warning part 230 uses the display panel provided between the 1st main door 111 and the 2nd main door 121, and blinks of a character and light with the said audio | voice output instead of the said audio | voice output. And so on, a display meaning the same content as the audio output is performed.

Thus, the first main door 111 is prevented from being greatly opened with the first sub door 112 opened, and the safety of the refrigerator 100 is improved.

Note that the relationship between the opening and closing of the first main door 111 and the first sub door 112 and the operation of the lighting unit 240 and the warning unit 230 has been described with reference to FIGS. However, the same operation control is performed on the freezer side. That is, when one of the second main door 121 and the second sub door 122 is opened, the lighting unit in the freezer compartment is turned on. Further, when a state in which both the second main door 121 and the second sub door 122 are opened or a state in which both are not closed is detected, a warning is notified.

As mentioned above, although embodiment of this invention was described, the technical feature in this invention shows the effect in the refrigerator provided with the main door which has a subdoor.

Therefore, the present invention is applicable not only to SBS type refrigerators such as the refrigerator 100 of the embodiment, but also to various types of refrigerators including a main door having a sub door.

The present invention can provide a refrigerator that includes a main door having a sub-door and regulates the rotation angle of the sub-door without affecting the cooling efficiency. Therefore, the present invention is useful as refrigerators of various types and sizes such as home use and business use.

DESCRIPTION OF SYMBOLS 100 Refrigerator 111 1st main door 112 1st subdoor 113 Opening part 121 2nd main door 122 2nd subdoor 123 Receiving port 130 Push latch 131 Subdoor switch 135 Damper apparatus 136 Joint member 137 Elastic member 140,142,196a,

197a Shaft member

141, 143, 194b, 196b Locking member 144 Moving member 150 Thermal insulation box 153 Partition wall 158 Substrate cover 162 Storage container 163

Shelf plate

170, 172

Rotating frame

180, 182

Fixed frame

181, 183, 193a, 195b Regulating

groove

190, 191, 193, 194, 195, 196, 197, 198 Reinforcing

member

194a, 195a, 198a Shaft hole

197b Locking surface

198b Contact surface 200 Control unit 210 Main door inspection Part 220 sub door detector 230 warning unit 240 lighting units

Claims

A refrigerator comprising a heat insulating box that forms a storage chamber whose front surface is open, and a main door that opens and closes the opening of the storage chamber,
The main door is
An opening provided in front of the main door;
A sub-door that opens and closes the opening by turning,
A shaft member that rotatably supports the sub-door;
The auxiliary door is provided so as to cross between the side surface of the auxiliary door that is the side surface in the axial direction of the shaft member and the inner side surface of the opening that faces the side surface of the auxiliary door. A stop member;
And a regulating member that regulates a rotation angle of the secondary door to a predetermined angle by contacting the locking member when the secondary door is opened.
The locking member is provided in a protruding shape from the side surface of the sub door, and rotates with the rotation of the sub door.
The refrigerator according to claim 1, wherein the restriction member is provided on the inner surface of the opening.
The locking member is provided in a protruding shape from the inner surface of the opening,
The refrigerator according to claim 1, wherein the restriction member is provided on a side surface of the sub door and rotates with the rotation of the sub door.
The main door further includes a reinforcing member that holds the locking member and the shaft member to suppress a change in posture of the locking member with respect to the shaft member. The refrigerator described.
The refrigerator according to any one of claims 1 to 4, wherein the main door further includes a damper device that suppresses a rotation speed of the sub door.
The main door further includes an elastic member that urges the shaft member and the locking member that are movable in the axial direction toward the inner surface of the opening or toward the sub door,
The shaft member and the locking member are extracted from the sub-door or the inner surface of the opening by being moved against the urging force of the elastic member. Refrigerator.