JP2006308169A - Cold storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drawer-type door with an opening function or an auxiliary opening function similar as that of a rotary door, and to obtain the function without increasing magnetic force of electromagnetic device. <P>SOLUTION: When an user performs the operation to open the drawer-type door, the operation is detected by an operation detecting means (S2), the electromagnetic device is acted (S3-S5), and the drawer-type door is energized in the opening direction. Thus the opening function or the auxiliary opening function similar to that of the rotary door can be achieved in the drawer-type door. Here, the electromagnetic devices are mounted on a part of the door and another part at an opposite side, and power distribution of the other electromagnetic device is implemented after a prescribed time from the power distribution to one of the electromagnetic devices on the basis of the detecting operation of the operation detecting means (S3-S5), thus the drawer-type door can be easily opened, and the magnetic force of the electromagnetic devices can be reduced so much. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a storage having an opening function or an opening assist function of a drawer type door.

  2. Description of the Related Art Conventionally, in storages, particularly refrigerators, a storage body having storage rooms such as a refrigerator room, a freezing room, and a vegetable room has been provided with a door that opens and closes a stored product entrance of each storage room. The door for the refrigerator compartment is a pivot type with the right or left side pivoted to the storage body, and the doors for the freezer compartment and vegetable compartment are each integrated with a drawer-type storage container. In short, it is a drawer type that moves in parallel with the storage body.

Thus, in recent years, a refrigerator door, that is, a rotary door, has been provided in which a predetermined amount is opened only by a user touching a specific portion of the door. Yes. In this case, specifically, the door is provided with a contact portion that the user touches and a detector that detects the user's contact with the contact portion, while the refrigerator body receives a detection signal of the detector. A control device and an electromagnetic device that is energized and excited by the control device are provided. In particular, the detector and the control device are connected by a lead wire that passes through the pivotal support portion of the door. With this configuration, when the user touches the contact portion, the detector detects the contact and sends a detection signal to the control device with a lead wire. Based on this detection signal, the control device energizes and energizes the electromagnetic device. Thus, the electromagnetic device opens the door by a predetermined amount.
Japanese Patent Laid-Open No. 1-150786 JP 2000-168559 A

In the case of the above-mentioned conventional one, a predetermined amount of the electromagnetic device is opened by a rotary door, and this is not applied to a drawer type door.
The present invention has been made in view of the above-described circumstances, and therefore the object of the present invention is to obtain an opening function or an opening assist function similar to that of a pivotable door with a drawer-type door, and further, this function is applied to the electromagnetic device. It is to provide a storage that can be obtained without requiring a large magnetic force.

  In order to achieve the above object, in the storage of the present invention, a storage body having a storage room, a drawer-type door that opens and closes a stored product entrance of the storage room, and a user operation for opening the door. And an electromagnetic device for urging the door in the opening direction in response to detection by the operation detection means. The first electromagnetic device is energized to be delayed by a predetermined time from the energization of the one electromagnetic device based on the detection operation of the operation detecting means. (Invention of Claim 1)

According to the above means, when the user performs an operation for opening the drawer-type door, this is detected by the operation detecting means, and the electromagnetic device is activated to urge the drawer-type door in the opening direction. Thus, it is possible to obtain an opening function or an opening assist function similar to that of the rotary door with the drawer type door.
In that case, the electromagnetic device is provided corresponding to one part of the door and the other part on the opposite side, and from the energization of one electromagnetic device based on the detection operation of the operation detection means, By performing the energization of the device with a delay of a predetermined time, the drawer-type door can be easily opened, and accordingly, the magnetic force of the electromagnetic device can be reduced.

Hereinafter, the present invention is applied to a refrigerator, and a first example (first embodiment) will be described with reference to FIGS. 1 to 5.
First, in FIG. 2, the whole refrigerator as a storage is viewed from the front, and the refrigerator main body 1 as the storage main body is displayed in order from the top in the refrigerator compartment door 2, the vegetable compartment door 3, the ice making compartment door 4, and the switching. A room door 5 and a freezer room door 6 are provided. Therefore, in the refrigerator main body 1, the refrigerator compartment 7 shown in FIG. 3, the vegetable compartment 8, the ice making room and switching room which are not shown in figure, and the freezer compartment exist in order from the top as a storage compartment, the refrigerator compartment door 2, The vegetable room door 3, the ice making room door 4, the switching room door 5, and the freezer room door 6 are stored product entrances and exits (stored product entrance 7a of the refrigerator compartment 7 and stored product entrance of the vegetable compartment 8) in front of each storage room. Only 8a is shown in FIG. 3).

  In this case, in detail, the refrigerator compartment door 2 is a rotary type in which one side of the right side or the left side (right side in the illustrated example) is pivotally supported by the refrigerator body 1, and the vegetable compartment door 3, the ice making compartment door 4, and the switching compartment. The door 5 and the freezer compartment door 6 are each integrally provided in a drawer-type storage container (only the storage container 26 for the vegetable compartment is shown in FIG. 3), and moves in parallel with the refrigerator main body 1. In short, it is a drawer type.

  Here, FIG. 3 has shown the structure regarding the vegetable compartment 8 and the vegetable compartment door 3 exclusively. As for the vegetable compartment 8, rails 9 are provided on the upper portions of the left and right side portions (only the left side is shown), and a receiving vehicle 10 is pivotally attached to the front portion of the rail 9 in a rotatable manner.

  In addition, there are electromagnetic devices, in this case, electromagnets, in the lower parts on both the left and right sides of the front part of the vegetable room 8, which are parts corresponding to one part of the vegetable room door 3 and the other part on the opposite side. 11 are arranged. In FIG. 3, a concave portion 12 that stores and positions a part of the electromagnet 11, connectors 13 and 14 that connect the power feeding unit on the refrigerator body 1 side and the electromagnet 11, and these connectors 13 and 14 are connected. A recessed portion 15 to be stored and a cover 16 to be attached to the recessed portion 15 are shown, and these are also present in the lower portions on both the left and right sides of the front portion of the vegetable compartment 8 together with the arrangement of the electromagnet 11 (also this Only the left one is shown).

  Further, FIG. 3 shows a front partition plate 17 for partitioning the stored product entrance / exit 8a of the vegetable compartment 8 and the stored product entrance / exit 7a of the refrigerated compartment 7, and an opening 18 is formed at the center thereof. is doing. Therefore, on the back side of the opening 18, a lever 19, a torsion coil spring 20 that urges the lever 19 counterclockwise, an operation detection switch 21, a cover 22 that covers them, and the power reception on the refrigerator body 1 side are provided. On the other hand, a cap 24 is loaded on the front side of the opening 18 so as to be movable back and forth. In this case, a micro switch is used as the operation detection switch 21.

And, on each of the upper left and right sides of the back side of the vegetable compartment door 3, for example, a metal strong container support member 25 is attached, and the storage container 26 is accommodated and hung on the container support member 25, thus the vegetable compartment. The door 3 and the storage container 26 are integrated via a container support member 25.
In addition, permanent magnets 27 are attached to the lower part of the left and right sides of the back, which is the one part of the vegetable compartment door 3 and the other part on the opposite side, respectively. Although not shown, a gasket containing a permanent magnet is attached to the peripheral edge of the back surface of the chamber door 3.

  Further, at the center of the upper side of the vegetable compartment door 3, a drawer recess 28, a handle 29, a support shaft 30 that pivots the handle 29 so that the handle 29 can be pivoted back and forth, and a handle 29 are provided on the vegetable compartment door. A torsion coil spring 31 is provided to bias to the third side. Also, on the rear side, a support base 32, a lever 34 pivotally supported by a shaft portion 33 on the support base 32, and a torsion coil spring 35 that urges the lever 34 clockwise are provided.

  In addition, a leg wheel 36 (only the right container support member 25 is shown) is pivotally attached to the rear end of the container support member 25, and the leg wheel 36 is attached to the vegetable compartment 8. By placing the container support member 25 on the rail 9 so as to be capable of rolling relative to the receiving vehicle 10, the container support member 25, and hence the stored product container 26, can be moved by the rail 9. It is stored in the vegetable room 8 so as to be able to be put in and out in the front and rear in a guided form, and is the above-mentioned drawer type. As a result, the vegetable compartment door 3 is also of the aforementioned drawer type.

  FIG. 4 shows a control device 37 composed of, for example, a microcomputer. The control device 37 functions as a control means for controlling the operation of the two electromagnets 11, and only those related to the function are shown as representatives in FIG. That is, a detection signal described later is input to the control device 37 from the operation detection switch 21 and a door switch 38 (shown only in FIG. 4) that responds to the opening and closing of the vegetable compartment door 3. The control device 37 gives a drive control signal to the drive circuit 39 for driving the electromagnet 11 based on those inputs and a previously stored control program.

  FIG. 5 specifically shows the drive circuit 39. Between the AC input terminals of the rectifier circuit 40, a relay contact 41 operated by the control device 37 and a resistance 42 of about 1 [Ω] are provided. A commercial power source E is connected in series, and between the DC output terminals of the rectifier circuit 40, a smoothing capacitor 43, a resistor 44 of about several hundreds [kΩ], and the two electromagnets 11, particularly each coil 11a thereof, A series circuit with each temperature fuse 45 attached to each of them is connected in parallel.

Next, the operation of the above configuration will be described.
First, when the vegetable compartment door 3 is in a closed state, the casters 36 of the container support member 25 reach the innermost part of the rail 9 of the vegetable compartment 8, and the storage container 26 is entirely stored in the vegetable compartment 8. Yes. At this time, the permanent magnet 27 of the vegetable compartment door 3 is in contact with or close to the electromagnet 11 of the vegetable compartment 8, and the gasket of the vegetable compartment door 3 is connected to the stored product entrance / exit 8 a of the vegetable compartment 8. Is closely attached to the peripheral portion (including the front partition plate 17), and is attracted and held in an intimate state by a built-in permanent magnet. Further, at this time, the door switch 38 is operated by being pushed by the vegetable compartment door 3, detects the closure of the vegetable compartment door 3, and outputs the detection signal. That is, the door switch 38 functions as a door closing detection means for detecting the closing of the vegetable compartment door 3.

  From this state, when the user puts a hand on the handle 29 of the vegetable compartment door 3 and pulls the handle 29, the handle 29 rotates forward about the support shaft 30 as shown by an arrow A in FIG. To push the lever 34 and rotate it counterclockwise as shown by arrow B in FIG. The lever 34 rotated counterclockwise pushes the cap 24 of the refrigerator main body 1 by the tip end portion 34 a and moves it backward as indicated by an arrow C in FIG. By pushing 19a, the lever 19 is rotated clockwise as indicated by an arrow D in FIG. Thereby, the state in which the lever 19 has pressed the operation detection switch 21 is changed to a state in which the operation detection switch 21 is released, whereby the operation detection switch 21 is activated and the vegetable compartment door 3 is opened. Is detected and a detection signal is output. That is, the operation detection switch 21 functions as an operation detection unit that detects an operation for opening the vegetable compartment door 3.

Accordingly, the control device 37 determines that the door switch 38 is activated (the vegetable compartment door 3 is closed), and the operation detection switch 21 is activated (the vegetable compartment door 3 is operated for opening). (Steps S1 and S2 in FIG. 1), and as a result, one of the electromagnets 11 (for example, the left side) is energized (Step S3).
Then, the same pole as the magnetic pole of one of the opposing permanent magnets 27 appears in the magnetic pole of the one electromagnet 11, and a repulsive force is generated thereby. Due to this repulsive force, one of the permanent magnets 27 and, in turn, one side of the vegetable compartment door 3 attached to the back surface thereof is urged forward.

Next, for example, after the elapse of a predetermined time of about 0.3 to 1 second (step S4), the other electromagnet 11 of the two electromagnets 11 (for example, the right side) is energized (step S5).
Then, like the one electromagnet 11, the same pole as that of the other permanent magnet 27 appears in the magnetic pole of the other electromagnet 11, and a repulsive force is generated thereby. By this repulsive force, the other permanent magnet 27 and, in turn, the other side of the vegetable compartment door 3 with the permanent magnet 27 attached to the back surface is biased forward.

As a result, the vegetable compartment door 3 is pushed forward, and in particular, it is pushed forward by a distance of 5 to 10 [mm] necessary to be released from the adsorption holding force by the permanent magnet built in the gasket.
Note that, even after the other electromagnet 11 is energized, for example, if a predetermined time of about 0.3 to 1 second elapses (step S6), the energization of both electromagnets 11 is cut off (step S7).

Then, if the user continues to pull the vegetable compartment door 3 with a hand hung on the handle 29, the vegetable compartment door 3 can be opened, and the container support member 25 is integrated with the vegetable compartment door 3. The storage container 26 can be pulled out as desired along the rail 9.
When the vegetable compartment door 3 is pushed in after the vegetable compartment door 3 is opened (the drawer of the storage container 26), the container support member 25 is moved along the rail 9 and the storage container 26 is returned to the storage position. 3 is returned to the closed state.

  In this way, in this configuration, when the user performs an operation for opening the drawer-type vegetable compartment door 3, this is detected by the operation detection switch 21 which is an operation detection means, and the electromagnet 11 which is an electromagnetic device. Works to urge the vegetable compartment door 3 in the opening direction. Thus, the drawer-type vegetable compartment door 3 can obtain the opening function or opening assist function similar to that of the rotating door as desired.

  In that case, the electromagnet 11 is provided corresponding to one part of the door and the other part on the opposite side, and from the energization of one electromagnet 11 based on the detection operation of the operation detection switch 21, The energization of the electromagnet 11 is delayed for a predetermined time, whereby the drawer-type vegetable compartment door 3 is pushed open one side at a time, and in particular, the gasket on the entire periphery of the back surface of the vegetable compartment door 3 It can be easily released from the adsorption holding force by the built-in permanent magnet, and the drawer-type vegetable compartment door 3 can be easily opened.

  Further, the magnetic force of the electromagnets 11 can be reduced by a corresponding amount. In particular, the magnetic force required for the electromagnets 11 to be energized later can be made smaller than the electromagnets 11 to be energized first. The cost required for use can be kept low.

  In addition, in the case of this configuration, by connecting one electromagnet 11 and the other electromagnet 11 in series, if any of the coils 11a is broken, both of them are energized. In this case, it is possible to prevent the vegetable compartment door 3 when only one of them is energized from being unbalanced and difficult to open. In addition, in this case, since the magnetic force generated by the coil 11a of the electromagnet 11 depends on the current, the amount of copper used in each coil 11a can be reduced by the series connection in which the voltage applied to both the coils 11a can be halved. .

In contrast to this, FIG. 6 shows a second embodiment (second embodiment) of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Only the part is described.
This is a modification of the mechanism for detecting the user's operation for opening the vegetable compartment door 3, and instead of the support base 32 described above, the shaft portions 51, 52 are respectively provided at the left front portion and the right rear portion. Is used. A first lever 54 is pivotally supported on the left front shaft 51 so that the first lever 54 can pivot back and forth, and a second lever 55 is pivoted on the right rear shaft 52 so that the first lever 54 can pivot back and forth. A torsion coil spring 56 that supports and biases the second lever 55 counterclockwise is provided.

  A permanent magnet 57 is attached to the tip of the second lever 55, and in this case, an operation detection switch 58 comprising a magnetic switch such as a reed switch or a Hall IC is associated therewith. The operation detection switch 58 replaces the operation detection switch 21 including the above-described microswitch, and is disposed on the back side of the opening 18 of the front partition plate 17 (not shown in FIG. 6).

  With this configuration, when the user puts his hand on the handle 29 of the vegetable compartment door 3 and pulls it, the handle 29 rotates forward as shown by the arrow A about the support shaft 30 as described above, and is moved by the upper portion 29a. The first lever 54 is pushed and rotated counterclockwise as indicated by the arrow X. The first lever 54 rotated counterclockwise pushes one end portion 55a of the second lever 55 by the tip end portion 54a to rotate the lever 55 clockwise as indicated by an arrow Y. As a result, the state in which the permanent magnet 57 has been close to the operation detection switch 58 is changed to a state in which the permanent magnet 57 is separated from the operation detection switch 58, whereby the operation detection switch 58 is activated and the vegetable compartment door 3 is opened. Detects an operation for and outputs a detection signal.

  That is, also in this case, the operation detection switch 58 functions as a detection means for detecting an operation for opening the vegetable compartment door 3, and other operations are performed in the same manner as described above. Obtainable.

In addition, opening of the vegetable compartment door 3 when the user's operation for opening of the vegetable compartment door 3 is detected may be performed by increasing distance than the above-mentioned.
Alternatively, the vegetable compartment door 3 may be attracted and held in a closed state by reversely energizing the electromagnet 11 with the vegetable compartment door 3 closed.

  Further, the electromagnetic device exemplified by the electromagnet 11 is not limited to the one that pushes out the vegetable compartment door 3 by the repulsive magnetic force with the permanent magnet 27, and has, for example, a movable core, thereby pushing out the vegetable compartment door 3. The electromagnetic device may be, for example, a motor or the like in addition to the electromagnet 11 if such an extruded part is used.

In addition, the electromagnetic device is not limited to the above-described left and right, and may be provided vertically or diagonally.
Also as a whole storage, in addition to the refrigerator, a warm storage room, a room temperature storage, or the like may be used.
Further, the drawer-type door exemplified as the vegetable room door 3 may be the ice making room door 4, the switching room door 5, the freezing room door 6, etc. in addition to the vegetable room door 3.
In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications within a range not departing from the gist.

The main part flowchart showing the first embodiment of the present invention. Front view of the entire refrigerator Exploded perspective view of main parts Block diagram of electrical configuration for electromagnet control Connection diagram of drive circuit FIG. 3 partial equivalent diagram showing a second embodiment of the present invention

Explanation of symbols

  In the drawings, 1 is a refrigerator main body (storage main body), 3 is a vegetable room door (drawer type door), 8 is a vegetable room (storage room), 8a is a stored product entrance, 11 is an electromagnet (electromagnetic device), and 21 is an operation. A detection switch (operation detection means), 27 is a permanent magnet, 29 is a handle, 37 is a control device (control means), 57 is a permanent magnet, and 58 is an operation detection switch (operation detection means).

Claims (2)

A storage body having a storage room;
A drawer-type door that opens and closes the storage item entrance of the storage room;
An operation detecting means for detecting a user operation for opening the door;
An electromagnetic device for urging the door in the opening direction in response to detection by the operation detection means;
The electromagnetic device is provided so as to correspond to one part of the door and one other part opposite to the door,
A storage, wherein the energization of the other electromagnetic device is delayed by a predetermined time from the energization of the one electromagnetic device based on the detection operation of the operation detection means. The storage according to claim 1, wherein one electromagnetic device and the other electromagnetic device are electrically connected in series.

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