KR100726320B1 - Refrigerator and freezer door closure - Google Patents

Abstract

The object of the present invention is to brake and decelerate the door even when the door is tightly closed, and to securely close the door to the refrigerator main body.

It is a door closing device of a refrigerator having a door 2R that can be opened and closed, a retracting member 22 and 23 provided in the door, and a door closing means 10 that can be in contact with or detachable from the retracting member. A rotating plate 12 pivotally pivotally supported between the open positions, a spring 15 for toggling the rotating plate, and a rotation damping means 70 coupled to the rotating plate, the rotating plate 12 being in contact with the retracting member. Or with a removable recess 24, the spring 15 is hung to toggle the rotating plate so that the retracting member 23 contacts the recess 24 in accordance with the closing operation from the open position of the door. ) And at the same time the resistance of the rotation damping means is applied to decelerate the closing operation of the door, and the door is held in the closing position by the toggle operation of the spring in the vicinity of the closing position of the door.

Rotating plate, spring, recess, retracting member, door, door closing means

Description

Refrigerator and Refrigerator Door Closer {REFRIGERATOR AND DOOR CLOSURE DEVICE FOR REFRIGERATOR}

1 is a perspective view showing an appearance of a refrigerator provided with a refrigerator door closing device according to a first embodiment of the present invention.

Fig. 2 is a perspective view of the refrigerator door closing device in the door closing position according to the embodiment of Fig. 1.

Fig. 3 is a perspective view of the refrigerator door closing device in the door opening position according to the first embodiment.

4 is a view for explaining an operation mode of the refrigerator door closing device in the door closing position according to the embodiment of FIG.

FIG. 5 is a view for explaining an operation mode of the refrigerator door closing device in the door opening position according to the first embodiment. FIG.

FIG. 6 is a view for explaining an operation mode of a rotation moment neutral position that acts on the refrigerator door closing device according to the first embodiment. FIG.

FIG. 7 is a view for explaining an operation form near a rotation moment neutral position that acts on the refrigerator door closing device according to the first embodiment; FIG.

8 is a plan view of the refrigerator door closing device in the door opening position according to the first embodiment;

9 is a diagram showing a cross-sectional structure of a refrigerator door closing device according to a second embodiment of the present invention.

Fig. 10 is a sectional view showing a basic configuration around a rotating plate support point in the refrigerator door closing device according to the second embodiment.

Fig. 11 is a perspective view showing an arrangement configuration of a spring and a rotating plate in the refrigerator door closing device according to the second embodiment.

Fig. 12 is a sectional view showing an arrangement configuration of a spring and a rotating plate in the refrigerator door closing device according to the second embodiment.

Fig. 13 is a diagram showing a cross-sectional structure of the refrigerator door closing device according to the third embodiment of the present invention.

Fig. 14 is a plan view showing a rotating plate return lever in the refrigerator door closing device according to the fourth embodiment of the present invention.

Fig. 15 is a perspective view showing the positional relationship between the rotating plate return lever and the cover in the refrigerator door closing device according to the fourth embodiment.

Fig. 16 is a perspective view showing another positional relationship between the rotating plate return lever and the cover in the refrigerator door closing device according to the fourth embodiment.

Fig. 17 is a view showing a configuration example applied to a retractable door according to the refrigerator door closing device according to the fifth embodiment of the present invention (door closing position).

Fig. 18 is a view showing a configuration example applied to a retractable door according to the refrigerator door closing device according to the fifth embodiment of the present invention (door opening position).

Fig. 19 is a view showing another configuration example in which the refrigerator closing device according to the fifth embodiment of the present invention is applied to a pull-out door (door closing position).

Fig. 20 is a view showing another configuration example in which the refrigerator door closing device according to the fifth embodiment of the present invention is applied to a pull-out door (door opening position).

Fig. 21 is a diagram showing a configuration example in which the refrigerator door closing device according to the embodiment of the present invention is applied to a single door type refrigerator.

<Explanation of symbols for the main parts of the drawings>

1: refrigerator body housing

2: cold storage room

2R, 2L: Door

3: rotation support point

4: Vegetable Room

5: ice making room

6: function selection room

7: freezer

8: base member

10: door closing means

11: rotation support point

12: rotating plate

13: spring hanger

14: fixed spring hook

15: spring

22: bracket

23: pin

24: recess

25: outer side

26: inner side

27: open position stopper

28: retracted position stopper

30: return lever

31: cover for the door closing means

70: rotation damping means

71: gear

72: gear

145: drawout door

146 guide rail

[Document 1] Japanese Unexamined Patent Publication No. 2004-3774

The present invention relates to a door closing device of a refrigerator, and more particularly, to a door closing device capable of closing the refrigerator door quietly and eliminating a semi-door state.

In recent years, the dietary life is changing, and in a diet where food ingredients are frequently purchased and cooked at a nearby food store every day, it is common to buy food at a suburban supermarket, for example, once a week, and store it in the refrigerator. In addition, in response to the increased use of frozen foods, large refrigerators having a capacity of more than 400 liters are generally spread at home.

However, since the door is also enlarged with the increase in the size of the refrigerator, the amount of food stored in the door increases with the door itself, so that a large collision sound occurs when the door collides with the refrigerator main body when the door is closed.

In addition, in the refrigerator, if the closing method is insufficient when the door is closed, it may be a so-called semi-door state. Then, the technique disclosed by patent document 1 is proposed as a prior art which prevents a semidoor state in the door closing apparatus of a refrigerator. According to this patent document 1, when a door is closed using a motor, the door closing member draws in the passive part provided in the door, and the door is closed, and it is described that the door is closed reliably by the minimum operation required.

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2004-3774

By the way, as the weight of the stored food accompanying the enlargement of the door in the prior art brings a discomfort sound when the door is closed, the food stored in the door collides with the door or the food, resulting in scratches or indentations on the surface. This may occur and be damaged.

In addition, in the half-door state of the door, cold air leaks to the outside and loses the refrigerating function, and thus the quality of the stored food is deteriorated, or the outside air invades into the refrigerator, and condensation may occur.

In addition, in the technique of Patent Document 1 described above, a configuration in which the door is forcibly closed when the door is in a half-open state is mainly disclosed, and specifically, the closing of the door by motor power is described. There is no thought or care to soften the shock of the people.

It is an object of the present invention to provide a door closing device for a refrigerator that can brake and decelerate the door even when the door is tightly closed, and can securely close the door to the refrigerator main body.

In order to solve the said subject, this invention mainly employ | adopts the following structures.

A door supported by the refrigerator main body so as to be openable and close; a retracting member provided in the door; and a door closing mechanism provided in the refrigerator main body to be in contact with or detachable from the retracting member;

The door closing mechanism has a supporting portion which can be brought into contact with or detachable from the pulling member, wherein the supporting portion is in contact with the pulling member to rotate between the closed position and the opening position from which the supporting member is separated from the drawing member. And a revolving plate possibly pivotally supported, and an elastic member having one end supported on the rotating plate and the other end supported on the refrigerator body.

The elastic member is installed such that a position at which tension is maximized exists between the closed position and the open position,

A refrigerator, wherein the door is held in the closed position by the elastic member via the support portion and the retracting member in the vicinity of the closed position of the door.

A door closing device of a refrigerator having a door supported by the refrigerator main body so as to be openable and close, a retracting member provided in the door, and a door closing means provided in the refrigerator main body to be in contact with or detachable from the retracting member,

The door closing means includes a rotating plate pivotally supported between a closed position and an open position, a spring having one end supported by the rotating plate and the other end supported by a housing of the refrigerator main body, and coupled to the rotating plate to rotate the rotating plate. Has resistance adding means for imparting load resistance to the

The rotating plate has a concave portion that can come into contact with or detached from the drawing member,

The spring is hung to toggle the swivel plate between the closed position and the open position,

In accordance with the closing operation from the open position of the door, the retracting member contacts the recess to rotate the rotating plate and at the same time receives the resistance of the resistance adding means, thereby decelerating the closing operation of the door,

The door opening / closing device of the refrigerator which keeps the said door in the closed position via the said recessed part and the said pulling-in member by the toggle operation | movement by the spring in the vicinity of the closed position of the said door.

Further, in the door closing device of the refrigerator, the resistance adding means is a door of a refrigerator which is a resistance adding means of one-way operation that does not add a rotating load resistance to the rotating plate when the rotating plate moves from the closed position to the open position. Closure device.

EMBODIMENT OF THE INVENTION The refrigerator door closing device which concerns on embodiment of this invention is demonstrated in detail below, referring drawings.

"First embodiment"

1 to 8 show a refrigerator door closing device according to the first embodiment of the present invention. 1 is a perspective view showing an appearance of a refrigerator having a refrigerator door closing device according to a first embodiment. Fig. 2 is a perspective view of the refrigerator door closing device in the door closing position according to the first embodiment. 3 is a perspective view of the refrigerator door closing device in the door opening position according to the first embodiment. 4 is a view for explaining an operation form of the refrigerator door closing device in the door closing position according to the first embodiment. FIG. 5 is a view for explaining an operation form of the refrigerator door closing device in the door opening position according to the first embodiment. FIG. FIG. 6 is a view for explaining an operation form of the rotation moment neutral position that acts on the refrigerator door closing device according to the first embodiment. FIG. It is a figure explaining the operation form in the vicinity of the rotation moment neutral position which acts on the refrigerator door closing device which concerns on 1st Embodiment. 8 is a plan view of the refrigerator door closing device in the door opening position according to the first embodiment.

In Fig. 1, reference numeral 1 denotes a main body housing of a refrigerator, and doors 2R and 2L of the refrigerating compartment 2 are so-called opening / closing doors of right and left openings, and are opened and closed about a rotational support point 3 covered by a cover. Configuration. The lower side of the refrigerating chamber 2 is the vegetable chamber 4 of the type which draws forward, and the temperature setting suitable for storage of vegetables is made. An ice making chamber 5 is provided on the lower left side of the vegetable chamber, and ice making is carried out by ice making means (not shown) and accumulated in the ice making chamber. When the ice in the ice-making chamber is taken out, the amount of ice is reduced by the ice amount detection means (not shown), and ice making is automatically performed to replenish the ice in the ice-making chamber. The right side of the ice-making chamber is made into the function selection chamber 6, for example, and it is a structure which can select the temperature setting of any one of a freezer, a refrigerating chamber, or a refrigerating chamber near ice temperature by user's selection. In addition, a freezer compartment 7 is arranged at the bottom thereof to accommodate frozen food and the like. Each of these doors can be rotated around the rotational support to open, or can be pulled out and refilled in parallel with the configuration so that the user can take out or replenish food.

The doors of the chambers of the refrigerating chamber 2, the vegetable chamber 4, the ice making chamber 5, the function selection chamber 6, and the freezer 7 are leaked to the outside over the entire circumference of the housing. The sealing member for protruding protrudes. This sealing member is fixed to the door side, and it is common to use the magnet sealing in which the surface magnet is included inside. When the door is closed, the magnet is attracted to the iron plate constituting the housing 1 so that the entire surface is in uniform contact with the housing 1 to obtain a sealing property.

Although the upper surface of the refrigerator housing 1 will be described later in detail, it can be fitted (contacted) or separated (released) with the pins 23 provided on the door 2. The door closing means 10 which closes) is provided, and especially when closing the door 2, it is comprised so that the deceleration force may act on the pin 23 by the damping means 70. As shown in FIG. Therefore, when the door 2 is closed, the door is decelerated, and when the sealing member provided in the door 2 is in contact with the main body 1, the door 2 is at a low speed. In addition, since the impact force does not occur, the food or drink stored inside the door does not touch each other and is not damaged.

Next, the structural example of the door closing means 10 mentioned above is demonstrated using FIGS. 2 and 3 are perspective views showing the structure of the door closing device in a state in which the cover covering the door closing means 10 provided on the upper part of the housing is removed, and FIGS. 4 to 8 are plan views. Hereinafter, although the right door closing means 10R which closes the right door 2R is demonstrated in detail, only the left door closing means 10L is symmetrical in shape, and the structure and operation are the same. .

2 to 5, the door 2R is rotatably supported around the rotation support point 3 provided at the end of the housing 1, and is configured to be opened and closed. The door closing means 10 is provided with a rotating plate 12 mounted on the base member 8 and pivotally supported around the rotation support point 11 to reciprocally rotate between the open position and the closed position. The recess 12 is provided with a recess 24 that is an opening that is opened to the outside to contact or leave the inlet pin 23 of the bracket 22 fixed to the door 2R. A spring pin 13 is provided so that the tension spring 15 is interposed between the fixing pins 14 provided on the base member 8.

The inlet pin 23 is provided in the bracket 22 fixed to the door 2R, and the inlet pin 23 is the recessed part 24 provided in the rotating plate 12 by the opening angle (theta) of a certain door. It is provided in the positional relationship which can enter or leave from the opening part of this one end part (refer FIG. 6). The drawing pin 23 penetrates into the inside of the recess 24 through the opening of one end of the recess 24 with the opening and closing of the door 2R and the rotating plate 12, or conversely, the recess 24 through the opening. ) The recessed part 24 is a periphery part of the recessed part 24, and the side near to the door 2 among the sides which contact the drawing pin 23 is the outer side 25 and the side far from the door 2 is an inner side. It is called the side (26). The details of the operation and action between the inlet pin 23 and the concave portion 24 having the outer side 25 and the inner side 26 will be described later.

2 (perspective view) and 4 (top view) show a state in which the door 2R is in the closed position, and the rotating plate 12 is in the closed state rotated in the counterclockwise direction indicated by the arrow CCW. . The pin 23 provided in the door 2R is fitted to the recess 24 provided in the rotating plate 12, and the pin 23 contacts the outer side 25 of the recess 24 so that the door 2R is provided. ) Is pressed in the direction of closing. The inlet position stopper 28 and the open position stopper 27 provided in the base plate 8 are stoppers for regulating the rotation angle range between the open position (see FIG. 8) and the inlet position (see FIG. 4) of the rotating plate, The height has a height as high as possible in contact with the rotating plate 12.

In the state in which the door 2R is closed and the pin 23 is in contact with the recess 24 of the rotating plate 12, the rotating plate 12 is not in contact with the inlet position stopper 28 and has a gap. One end of the spring 15 is caught by a spring hook portion 13 provided on the rotating plate 12, and the other end of the spring is caught by a fixed spring hook portion 14 provided on the housing, and is stretched by a predetermined tension F1. (See Figure 4).

Here, the spring 15 is supported by a spring hook portion 13, one end of which is provided on the rotating plate 12, the other end is supported by a fixed spring hook portion 14 provided on the housing 1, the rotating plate 12 Since the straight line which connects the both ends of the spring 15 between the open position and the closed position of is made into the positional relationship which moves from one side of the rotation support point 11 of the rotating plate 12 to the other, the rotating plate 12 is opened or It is the structure which can be hold | maintained in a closed position, In other words, it is comprised so that the rotating plate 12 may toggle by the spring 15. As shown in FIG.

The rotation damping means 70 is a resistance adding means for applying a load resistance to the rotation of the rotating plate. In the present embodiment, the damping force acts when rotating in the CW direction, and the damping force does not work when rotating in the CCW direction. It is configured to perform one-way attenuation operation. In this one-way operation, damping force is applied when the door is closed, and damping force is not applied when the door is opened. As this rotation damping means 70, what is necessary is just to employ | adopt a means which can perform a well-known one-way damping operation.

A part of the rotating plate 12 is provided with a fan-shaped gear 72, a gear 71 is also provided for the rotation damping means 70, and when the rotating plate 12 rotates by engaging these gears, the rotation damping means 70 Is rotated, and the size of the gear 72 provided on a part of the rotating plate 12 is made larger than the size of the gear 71 provided on the rotation damping means 70. If the ratio of the dimensions is 1: N (N> 1), since the rotation damping means 70 rotates N times faster than the rotating plate 12, the rotation damping means 70 has a damping force of 1 / N. Small ones can be applied.

In addition, when the door 2R is closed, the force that the rotary plate 12 receives from the inlet pin 23 receives the rotation support point 11 of the rotary plate 12, and only the rotational force is transmitted to the rotation damping means 70. Therefore, the inexpensive and simple rotation damping means 70 can be used without necessitating the shaft of the rotation damping means 70 more than necessary, and therefore, it is suitable for low cost.

In addition, although the detail of the lever 30 is mentioned later, when the rotating plate 12 turns to the closed direction by mistake in the state in which the door 2R was opened, it is for returning the rotating plate 12 to an open position. Lever.

4 to 8 are detailed plan views showing the positional relationship between the rotating plate 12 and the retracting pin 23 during the opening and closing operation of the door. As described above, FIG. 4 shows the rotating plate 12 rotating in the CCW direction. The state in which the door 2R is closed by applying a force P1 (to toggle operation by the spring 15) to the pin 23 is shown. In FIG. 5, the state in which the door 2R is opened by rotating in the CCW direction is shown. Since the pin 23 moves in the P2 direction together with the door 2R, the pin 23 contacts the outer side 25 of the concave portion 24 provided on the rotating plate 12 to move the rotating plate 12 in the CW direction. Rotate In Fig. 6, the door 2R shows an open state up to an angle θ, and the spring 15 is located just above the rotation support point 11 of the rotating plate 12. As shown in Figs. In this position, since the tension force F1 by the spring 15 does not generate a moment around the rotation support point 11 of the rotating plate 12, it is neutral without rotating in the opening direction or the closing direction. It is the neutral point in position. In this way, the elastic member of the spring 15 has a position where the tension is maximized between the closed position at which the door 2R is closed and the support pin at the recess 24 at the inlet pin 23 and the open position at which it is disengaged. It is installed to exist.

If the door 2R is opened further than this neutral point, the rotating plate 12 rotates to the CW side, and the spring 15 moves beyond the rotating support point 11 to impart the rotation moment in the CW direction to the rotating plate so that the rotating plate rotates in the CW direction. As shown in Fig. 7, the pin 23 is brought into contact with the recess 24 to move from the outer side 25 to the inner side 26. As shown in Figs. If the door 2R is still opened, the pin 23 will come out of the recess 24 of the rotating plate 12, and the rotating plate 12 will stop in part by contacting the open position stopper 27, and the door 2R will stop. Wait at that position while) is open. The state of the door opening is shown in FIG.

Next, an operation when closing the door 2R will be described. When closing, as shown in Fig. 8, the user does not operate the door 2R by rotating the door 2R in the direction of the arrow CW in the order of Figs. 7, 6, 5, and 4 from the open state. However, since the operation differs when the door is closed very slowly and when the door is closed rapidly, the respective operations will be described.

First, although the door is closed very slowly, this is a state in which the door stops before reaching the fully closed state, and there is a risk of becoming a so-called semi-door state. As shown in FIG. 7, the pin 23 contacts the inner side 26 of the recessed portion 24 and starts rotating the rotating plate 12 in the direction of the arrow CCW. At this time, the outer plate 25 of the pin 23 and the concave portion 24 does not contact, and only the pin 23 and the inner side 26 are disposed so that the rotating plate 12 is waiting at a position where it is surely in contact. Consists of.

When the door 2R is further closed, the state of FIG. 5 reaches the state of FIG. 5, so that the spring 15 exceeds the position of the rotation support point 11 of the rotation plate 12, so that the rotation plate 12 is rotated in the direction of the arrow CCW. As it occurs, the outer side 25 of the recess 24 contacts the pin 23 by rotating in the CCW direction. At this time, since the moment in the direction of the arrow CCW is generated by the spring 15 of the rotating plate 12, the force in the direction of the arrow P1 is applied to the door through the pin 23, which is the door 2R. ), The door 2R continues the closing operation and finally reaches the closed state of the door 2R shown in Fig. 4 (it does not become a semi-door state). At the time of the closing operation, the damping force from the rotation damping means 70 is applied, so that the door closes slowly, so that the speed at which the magnet seal comes into contact with the main body housing 1 is low, and the sound generated when closing It can be closed quietly.

Next, the case where the door 2R is closed rapidly will be described. When the door 2R is suddenly closed, the door 2R is decelerated by the damping force generated by the rotation damping means 70 from Fig. 7 to Fig. 5, but the speed is still sufficient even at the time of Fig. 5. Since the pin 23 is kept, the pin 23 continues to move in the closing direction at a speed that is larger than the pulling speed of the concave portion 24 due to the rotation of the rotating plate 12 generated by the spring 15 in the CCW direction. Therefore, the pin 23 continuously presses the inner side 26 of the recess 24 in the P1 direction, and the rotating plate 12 is pressed by the pin 23 to rotate in the CCW direction. In the meantime, since the damping force by the rotation damping means 70 is continuously applied, the pin 23 continues to decelerate by receiving the force (so-called reaction force) in the P2 direction. By appropriately setting the rotation damping force generated by the rotation damping means 70, the door 2R can be sufficiently decelerated before reaching the closing position shown in Fig. 4 (the force for rapidly closing the door and the rotation damping force are appropriately reduced). If selected and designed), the speed when the door 2R comes into contact with the main body is made low and the sound generated when the door is closed can be closed quietly.

In addition, when the user closes the door 2R abruptly, the pin 23 suddenly touches the inner side 26 of the concave portion 24 so that an impact sound is generated. As a means for preventing such a shock sound, the above-mentioned occurrence of the impact sound can be avoided by attaching a shock absorbing material such as a rubber plate to the inner side 26 of the concave portion 24, for example. When opening the door, the opening force of the door increases for the user when the rotation damping force is added, which is not preferable in view of operability. Therefore, it is preferable that the rotation damping force operates only when the door is closed, and is the rotation damping means of the one-way operation that revolves when the door is opened.

"2nd embodiment"

9 to 12 show a refrigerator door closing device according to a second embodiment of the present invention. 9 is a diagram showing a cross-sectional structure of a refrigerator door closing device according to a second embodiment of the present invention. 10 is a cross-sectional view showing a basic configuration around a rotating plate support point in the refrigerator door closing device according to the second embodiment. FIG. 11 is a perspective view showing an arrangement configuration of a spring and a rotating plate in the refrigerator door closing device according to the second embodiment. FIG. 12 is a cross-sectional view showing an arrangement configuration of a spring and a rotating plate in the refrigerator door closing device according to the second embodiment.

Since the refrigerator door closing device of the present invention is mounted on the upper surface of the refrigerator, it is desirable to reduce the thickness of the door closing device and to make the overall height of the refrigerator as low as possible. So, in the refrigerator door closing device which concerns on 2nd Embodiment of this invention, the structure which implements the thickness reduction is demonstrated using FIGS.

In Fig. 9, the spring 15 crosses the rotary support point 11 of the rotary plate 12 between door opening and closing operations, so that the spring 15 intersects the rotary plate 12 and the rotary plate support point 11. It must be mounted above the rotating plate 12 so as not to. Moreover, since the pin 23 enters and exits the recessed part 24, the pin 23 and the recessed part 24 should be arrange | positioned so that it may not interfere with the spring 15 in the whole area | region of the operation range of door opening and closing.

In order to arrange the door closing means 10 in a thin shape while satisfying such a condition, the arrangement structure of the spring 15 and the rotation damping means 70 is arranged side by side horizontally so that they do not overlap each other up and down. It is valid to let. In other words, the rotation damping means 70 is not inherently limited to its arrangement, and may be arranged to be coaxially superimposed with the rotary plate support point 11 as an example, but without such arrangement (around the rotary plate 12). Adopting a configuration in which the gear unit 72 provided in the gear unit 72 and the gear 71 provided in the rotation damping means 70 are engaged with each other], as shown in FIG. By arrange | positioning side by side, the door closing device 10 is comprised in thin shape.

10 is a cross-sectional view in the longitudinal direction of the spring 15 in the configuration of FIG. 9, in which a coil portion of the spring 15 is disposed with a gap Gap between the rotary plates 12. FIG. In this arrangement, if the tensile force from the spring 15 is F, the height of the reverse point of the spring 15 on the spring pin 13 is H1, and the height of the CCW direction applied to the rotating plate 12 is increased. The rotational torque T becomes T = F × H1. Due to this rotation torque, the rotating plate 12 may be deformed to the position of 12 'as shown by the broken line.

So, the structural example which prevents deformation of this rotating plate is demonstrated, referring FIG. 11 and FIG. 11 and 12 differ from that of FIG. 10 in that the hook portion of the spring 15 extends, and the coil portion of the spring 15 does not overlap with the rotating plate 12. FIG.

As shown in Figs. 11 and 12, the length L of the hook portion is larger than the tooth tip circle of the gear portion 72 provided on the rotating plate 12 so that the coil portion of the spring 15 does not contact the gear portion 72. Configure to not. In this configuration, since only the hook portion 15a of the spring 15 is superimposed on the rotating plate 12, the height of the position at which the spring 15 in the spring hook portion (pin) 13 is hooked is placed. Can be installed in close proximity to the upper surface of the rotating plate (12).

Therefore, the height of the reverse point of the spring 15 can be made into H2 (<H1). At this time, the rotation torque T 'in the CCW direction applied to the rotating plate 12 becomes T' = F x H2 (<F x H1), thus deforming the rotating plate 12 as indicated by the broken line in FIG. It can be suppressed.

"Third embodiment"

Fig. 13 shows a cross-sectional structure of the refrigerator door closing device according to the third embodiment of the present invention. 3rd Embodiment has shown the structural example other than preventing deformation of the rotating plate by spring tension.

In Fig. 13, 12 'is a second rotating plate above the spring 15, and is connected to the rotating plate 12 to rotate integrally. The upper surface base 8 'is connected to the base 8 by the connecting member 19, and the second rotational support point 11' is provided on the upper surface base, and is coaxially disposed with the rotational support point 11, And rotatably fitted with holes provided in the second rotating plate.

In such a configuration, the rotary plates 12 and 12 'and the rotational support points 11 and 11' are disposed above and below the spring 15 to support the force of the spring 15 from above and below the spring 15. Therefore, it is possible to prevent the rotating plate 12 shown in Fig. 10 from being deformed into the broken line state 12 '.

"4th embodiment"

14 to 16 show a refrigerator door closing device according to a fourth embodiment of the present invention. It is a top view which shows the rotating plate return lever in the refrigerator door closing device which concerns on the 4th Embodiment of this invention. Fig. 15 is a perspective view showing the positional relationship between the rotating plate return lever and the cover in the refrigerator door closing device according to the fourth embodiment. Fig. 16 is a perspective view showing another positional relationship between the rotating plate return lever and the cover in the refrigerator door closing device according to the fourth embodiment.

In the first to third embodiments of the present invention, when the door is opened, as shown in Fig. 8, the rotating plate 12 is held in the open position, and when the door is closed, the pin 23 is concave. The positional relationship which can be drawn in in the inside of the part 24 is maintained. However, if, for example, the user accidentally touches the rotating plate 12 or the object comes in contact with the rotating plate 12 to rotate, the spring 12 is drawn in by the tension of the rotating plate 12 as shown in FIG. It may be the case that only the bay rotates to the retracted position. The rotating plate 12 is pulled in, and comes into contact with the stopper 28 to be in a stopped state. Even if the door 2R is closed in this state, the pin 23 cannot enter the inside of the recess 24, and a situation arises in which the door 2R cannot be closed.

Thus, a part of the rotating plate 12 is extended to install the return lever 30, and when the lever 30 is rotated to the retracted position as shown in Fig. 14, the lever 30 is moved forward so that the user can operate it. It protrudes and it is set as the structure which a user can apply a force to the direction A of illustration. Although the door 2R is in the open position, it is an abnormal situation when the return lever 30 is in the retracted position as shown in Fig. 14, but it is the user that the return lever 30 is in the abnormal position. It is effective to make the tip of the return lever a prominent color to inform the user clearly.

When the user applies a force in the direction of the city A, the rotating plate 12 can be rotated in the city CW direction until it contacts the open position stopper 27, and can be returned to the open state by rotating to the open position shown in FIG. . Since the spring 15 can go beyond the position of the rotation support point 11 of the rotary plate 12 during the rotation operation, the rotary plate 12 can hold the open position shown in Fig. 8, so that the door can be closed next. In this case, the closing operation from Fig. 7 to Fig. 4 can be performed. In particular, since the number of parts is not increased by providing the return lever 30 integrally with the rotating plate 12, it is effective for low cost.

15 and 16 show one example of the positional relationship between the cover 31 covering the door closing device 10 and the return lever 30 in the refrigerator having such a configuration. In order to make it easy to see, the door 2R is abbreviate | omitted and shown. The door closing device cover 31 is provided with a slit 32 for rotating the return lever 30 on the front face, and a slit for rotating the pin 23 on the upper face. Fig. 15 shows a case in which the rotary plate 12 is in the retracted position, and a case in which the door is normally closed or a case in which only the rotary plate 12 rotates to the retracted position by mistake as shown in Fig. 14 can be considered. .

In Fig. 15, the return lever 30 protrudes from the surface of the cover 31, and a force is applied from the fingertip to the tip of the lever 30 in the direction A shown to move the rotating plate 12 from the retracted position to the open position. Can rotate Here, the trajectory 30a of the tip of the lever 30 indicated by the broken line rotates to the open position and at the same time, the convex amount from the surface of the cover 31 decreases, and in the open position, the lever 30 is smaller than the surface of the cover 31. It is comprised so that it may become a retracted position. Here, as shown in FIG. 6, the spring 15 extends beyond the position of the rotation support point 11 to the position where the torque in the CW direction occurs on the rotating plate 12, as shown in FIG. It is set to rotate. After that, the rotating plate 12 is rotated and waits until it comes into contact with the open position stopper 27 by the torque in the CW direction generated by the spring 15.

With such a configuration, even when the rotating plate 12 is moved to the retracted position by the door 2R being opened, the rotating plate 12 can be rotated to the open position by pressing the return lever 30 with a finger. Therefore, the door 2R can be normally closed. On the other hand, when the rotary plate 12 is in the open position at the normal position when the door is opened, the lever 30 is in the position where the rotary plate 12 is drawn in from the surface of the cover 31, so that the user can move the rotary plate 12 from the open position. Since it cannot move to the retracted position, it is impossible for the rotating plate 12 to move to the retracted position due to mischief or wrong operation so that the door 2R does not close.

"Fifth Embodiment"

17 to 20 show a refrigerator door closing device according to a fifth embodiment of the present invention. Fig. 17 is a view showing a configuration example applied to a refrigerator door closing device according to the fifth embodiment of the present invention (door closing position). Fig. 18 is a view showing a configuration example applied to the retractable door according to the refrigerator door closing device according to the fifth embodiment of the present invention (door opening position). Fig. 19 is a view showing another example of the constitution applied to the refrigerator door closing device according to the fifth embodiment of the present invention (door closing position). [Fig. 20] A diagram showing a refrigerator door closing device according to a fifth embodiment of the present invention, showing another example of the configuration applied to a pull-out door (door open position).

In the first to fourth embodiments of the present invention, a configuration example in which a door closing device is provided in a rotary door has been described. However, the door closing device of the present invention can be applied to a pull-out door such as a vegetable compartment. The fifth embodiment will be described with reference to FIGS. 17 to 20.

Fig. 17 shows the case where the drawer door 145 is in the closed position, and Fig. 18 shows the case in the open position. The configuration of the door closing device 10 is denoted by the same reference numerals for the same configuration as in the configuration of the first embodiment shown in FIGS. 2 to 8. The withdrawal door 145 is configured to move along the guide rail 146 and can be opened and closed in a pull out manner.

The drawing pin 23 is provided at the center of the bottom surface of the drawing door 145. When the drawing door 145 is moved in the 148 direction from the opening position and closed, the drawing plate 23 of the rotary plate 12 provided in the door closing device 10 is closed. It fits in the recessed part 24, is drawn in by the spring 15, and is closed, decelerating by the damping force by the rotation damping means 70. As shown in FIG. In addition, when the withdrawal door 145 is moved from the closed position to the 147 direction and starts to open, the inlet pin 23 is moved to rotate the rotating plate 12 provided in the door closing device 10, and the withdrawal door is at a distance. It is the structure by which the spring 15 reaches the neutral point beyond the rotation center 11 of the rotating plate 12 in the position drawn out by (S).

With such a configuration, as shown in Fig. 6, when opening the drawout door 145 forward, the drawing pin 23 rotates the rotating plate 23 to tension the spring 15 to accumulate energy, and to open. In the position, the rotating plate 12 rotates to a position where the spring 15 exceeds the neutral point, so that the rotating plate 12 is held in the open position as shown in FIG.

When closing the drawer door 145, it can be closed freely by the user until the opening amount S, and after the opening amount S, the recessed pin 23 is provided in the rotating plate 12 Entering the inside of the 24 and rotating the rotating plate 12, the spring 15 rotates until it exceeds the neutral point, the energy stored in the spring 15 is opened to draw in the withdrawal door 145, At that time, since the rotation damping means 70 rotates together with the rotating plate 12, a braking force is generated and the rotating plate 12 is decelerated, and the speed in the direction of the arrow 148 of the pullout door 145 is reduced. Since the drawer door 145 is tensioned by the spring 15 and closed while decelerating, the impact when the drawer door 145 is closed can be reduced. Therefore, even when the draw door 145 is sharply closed rapidly, impact sound can be suppressed and it can be set as a quiet draw door.

19 and 20 show a configuration example in which the door closing device is provided on the left and right guide rails 146 provided on the side of the take-out door in the fifth embodiment. In this configuration example, the door closing device 10 is shown. Since two sets are provided, the withdrawal door 145 is pulled in from both sides in the vicinity of the guide rail on the left and right side, so that the withdrawal operation of the withdrawal door can be performed more stably.

In the above description, the refrigerator having a two-door type refrigerator door having a so-called opening type has been described. However, the present invention is not limited to the two-door type, and is applicable to a one-sided open one-door refrigerator as shown in FIG. Its actions and effects are equivalent to the two-door type. However, since the mass of the door is larger than the two-door type, it is preferable to make the spring and the rotation damping means of the door closing device more powerful.

In addition, although the above-mentioned embodiment of this invention was described about the example applied to the household refrigerator, this invention is not limited to a household refrigerator, Even if it is a business refrigerator, the same effect can be acquired by the same structure. Alternatively, the present invention can also be applied to a door of an apparatus for dispensing food and the like stored therein, such as a refrigerator for temporarily storing cooked food in a warm state, thereby achieving the same effect.

As described above, the feature of the refrigerator door closing device according to the embodiment of the present invention can rotate or return between the retracted position and the open position, and the position of both the retracted position and the open position by a spring. A recess is provided in a rotating plate capable of holding a recess, one end of the recess is an opening portion, and the door has an inlet pin, and the inlet pin enters the vicinity of the rotational support point of the recess of the rotor plate in the closed state of the door. When the door is pressed by the predetermined pressing force, and the door is opened by the user, the inlet pin moves with the door, the rotating plate rotates to the open position to hold the position, and the door is released from the combination of the rotating plate and the pin. The user can open and close the door freely. In addition, the present invention includes a damping means that rotates in engagement with the rotating plate, and when the door is closed, the door is decelerated once in front of the door in contact with the housing to reduce the impact when the door is closed.

As described above, in the present embodiment, when the door is operated in the closing direction, the damping force is applied by the one-way operation dumper. Therefore, the door is decelerated and slowly closed before the door contacts the main body. It is possible to reduce the amount of noise, and at the same time eliminate the collision between the foods stored in the doors. When the door is closed, a spring force is applied in the direction of closing the door, and the spring force of the spring is continuously applied even after the door is closed, thereby preventing the half door.

According to the present invention, when the door is closed, the damping force is applied by the unidirectional motion dumper, so that the impact when the door is closed can be lessened, and the food contained in the door is prevented from colliding with each other. Can be.

Further, when the door is closed, the semi-door state can be prevented by applying a force in the direction of closing the door by the spring and continuously pressing the door in the door closing direction even after the door is closed.

Claims (10)

A door supported by the refrigerator main body so as to be openable and close; a retracting member provided in the door; and a door closing mechanism provided in the refrigerator main body to be in contact with or detachable from the retracting member; The door closing mechanism, A support portion capable of contacting or detaching the lead member, the support portion pivotally pivotally supported between a closed position in which the door is closed by contacting the lead member and an open position in which the support portion is detached from the lead member. With tumblers, An elastic member having one end supported by the rotating body and the other end supported by the refrigerator main body, The elastic member is installed such that a position at which tension is maximized exists between the closed position and the open position, And the door is held in the closed position by the elastic member via the support portion and the retracting member in the vicinity of the closed position of the door. A door closing device of a refrigerator having a door supported by the refrigerator main body so as to be openable and close, a retracting member provided in the door, and a door closing means provided in the refrigerator main body to be in contact with or detachable from the retracting member, The door closing means includes a rotating plate pivotally supported between a closed position and an open position, a spring supported at one end on the rotating plate, and a second end supported on a housing of the refrigerator main body, and the rotating plate to rotate the rotating plate. Has resistance adding means for imparting load resistance to the The rotating plate has a concave portion that can come into contact with or detached from the drawing member, The spring is hung to toggle the swivel plate between the closed position and the open position, In accordance with the closing operation from the open position of the door, the retracting member contacts the recess to rotate the rotary plate and at the same time receives the resistance of the resistance adding means, thereby decelerating the closing operation of the door; The door closing device of the refrigerator characterized in that the door is held in the closed position via the recess and the retracting member by a toggle operation by the spring in the vicinity of the closed position of the door. The door closing of the refrigerator according to claim 2, wherein the resistance adding means is a resistance adding means of one-way operation that does not add a rotation load resistance to the rotating plate when the rotating plate moves from the closed position to the open position. Device. The door closing device of the refrigerator of claim 2, wherein the spring and the resistance adding unit are disposed in parallel with each other on the upper housing of the refrigerator body. The said spring is a coil tension spring which has a hook part and a coil part, One hook part is arrange | positioned above the said rotating plate, The said coil part is the outer side of the said rotating plate. Door closing device of the refrigerator, characterized in that disposed on. The door closing device of the refrigerator according to any one of claims 2 to 4, wherein the rotating plate has rotating plate return means for rotating the rotating plate from its closed position to an open position. The door closing device of the refrigerator according to claim 6, wherein the rotating plate return means is a protrusion which protrudes a part of the rotating plate. The method of claim 7, wherein a cover covering the door opening and closing means is provided in a housing of the refrigerator main body, And the projection protrudes from the cover when the rotating plate is in its closed position, and is in a position retracted from the cover when the rotating plate is in its open position. The inner peripheral side of the said recessed part which comes in contact with or detaches from the said drawing member, The outer side of the side close to the door, and the inner side of the side far from the said door are provided, The door closing device of the refrigerator characterized by installing a shock absorbing material on the inner side of the first member in contact with the recess in accordance with the closing operation of the door. The door closing means according to any one of claims 2 to 4, wherein the door closing means has an open position stopper and a closed position stopper for regulating the rotating plate in a range of an open position and a closed position, When the door is opened, a part of the rotating plate is in contact with the opening stopper, and when the door is closed, the other part of the rotating plate holds the gap with the closed position stopper while the retracting member is in contact with the recess. Door closing device of the refrigerator, characterized in that.

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