KR20120029993A - Refrigerator - Google Patents

Abstract

PURPOSE: A refrigerator is provided to maintain the strength by a simple configuration and to prevent occurring discontinuous noises by a stick slip. CONSTITUTION: A refrigerator comprises a storage of a box shape, a cover member(16), a decompression member, and a supporting member. The storage has an opening which is long in a horizontal direction. The cover member opens and closes the opening of the storage. The decompression member makes a pressure of the storage lower than the atmospheric pressure. The supporting member is installed in a part where entering to the opening of the storage toward the inner side from the central part of the width direction, thereby supporting the opening of the storage.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator.

The refrigerator described in Patent Document 1 includes a box-shaped storage chamber having an opening shape longer in the horizontal direction than the vertical direction, a lid member for opening and closing the opening of the storage chamber, pressure-reducing means for making the storage chamber lower than atmospheric pressure, and a central portion of the lid member. The structure which protrudes inward and has the reinforcement support part which supports the opening part of a storage chamber, and the structure which prevents deformation of the opening at the time of pressure reduction by the reinforcement support part is described.

Japanese Patent No. 4423320

When the width of the pressure reduction chamber is enlarged and the contents are enlarged, it is easy to store various foods.

On the other hand, when the decompression chamber is enlarged, the pressure from the atmosphere is uniformly applied to the entire surface by the differential pressure between the external atmospheric pressure and the internal low pressure when the inside of the decompression chamber is decompressed with the vacuum pump. This load is applied in the direction of strongly pressing the entire outer member surface from the outside to the inner side, and the size of the outer member is about 450 mm in width and 300 mm in depth, and about 270 kgf when the differential pressure is 0.2 atm. It is a large load of about 2700 N).

Patent Document 1 describes a configuration in which a reinforcing support portion for supporting deformation of an opening is provided in a lid member so that the opening of the pressure reducing chamber is not damaged even when such a load is applied.

In this configuration, when the lid is pressed against the opening by using the handle to close the opening, and the vacuum pump is driven to start decompression, the opening of the outer member is damaged to contact the reinforcing member provided integrally with the lid member. Support the load. This load increases with the decompression by the vacuum pump.

On the other hand, when the lid is closed, the packing, which is the seal member, is pressed against the opening by the pressing force by the handle and is closed. When the vacuum pump is driven to start depressurization, the entire lid member is attracted to the outer member side by the negative pressure inside and pulled in to resist the frictional force caused by the load applied to the reinforcing member. As the cover is retracted, the sealability can be realized as much as the packing can be pressed more strongly to maintain the negative pressure.

However, when the load applied to the reinforcing member increases with the enlargement of the pressure reduction chamber, the frictional force applied to the reinforcing member increases when the lid member is attracted to the outer member side and drawn in. Since the reinforcing member is formed integrally with the lid member, this frictional force prevents the lid member from being drawn in.

This load is, for example, about 2700N of the load applied to the upper and lower surfaces of the outer member, and about 1/4 of the opening is applied to the opening, and thus becomes about 675N. do. As a result, there is a problem that the movement of the lid member is hindered, the pressing force of the lid member is lowered, and the adhesion of the packing is deteriorated.

In addition, when the lid member is drawn in, frictional force is not drawn in smoothly, causing a so-called "stick slip" phenomenon. Since it is generally related to the coefficient of static friction> dynamic friction, even if the load increases, they do not move until they reach the frictional force due to the coefficient of static friction. It is a phenomenon of moving to a small dynamic friction coefficient and easily moving rapidly, and as a result, moving and stopping repeatedly and discontinuously. As a result, there is a problem that a discontinuous squeaking sound is generated as the cover member is drawn in. The larger the load applied to the reinforcing member as well as the squeaking sound caused by the stick slip phenomenon, the larger the decompression chamber is.

In view of the above-mentioned problems, an object of the present invention is to obtain a refrigerator having a storage structure such as a gas control chamber which is inexpensive and lightweight and maintains its strength in a simple configuration.

In addition, since the cover member is smoothly drawn in without the load generated by the decompression being impeded by the adsorption of the cover member, the sealing seal is secured, and a discontinuous squeaking sound due to the stick slip phenomenon accompanying the pressure reduction is generated. It aims at obtaining the refrigerator provided with the decompression chamber which is not to be performed.

In order to achieve the above object, for example, the configuration described in the claims is adopted. An example thereof includes a box-shaped storage chamber having an opening longer in the lateral direction than the up-down direction, a lid member for opening and closing the opening of the storage chamber, and a pressure reducing means for making the storage chamber lower than atmospheric pressure. It is provided in the part which enters into the said opening of the said storage chamber inward from the width direction center, and is provided with the support means which supports the said opening of the said storage chamber.

According to the present invention, it is possible to obtain a refrigerator having a storage structure such as a gas control chamber, which is inexpensive and light in weight, with a simple configuration.

In addition, since the support which receives the load by pressure reduction is provided separately from the lid member, when the lid member is gradually drawn in by the suction force by the reduced pressure, the lid member is smoothly drawn without being hindered by the frictional force, so that the sealed seal is assured. The refrigerator provided with the pressure reduction chamber which does not generate the discontinuous squeaking sound by a phenomenon can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which looked at the refrigerator main body in embodiment of this invention from the front.
FIG. 2 is a conceptual view taken along the line AA of FIG. 1.
3 is a cross-sectional view taken along line BB of FIG. 1.
4 is a cross-sectional view taken along the line BB of FIG. 1, showing a state in which both the refrigerating chamber door and the decompression chamber door are opened.
5 is a perspective view of the configuration of the pressure reduction chamber as viewed obliquely from above.
6 is a simplified perspective exploded view of the outer member viewed from the front upwards.
FIG. 7 is a front view seen from the direction C of FIG. 6.
8 is a cross-sectional view taken along the line KK of FIG. 6.
9 is a cross-sectional view taken along the line JJ of FIG. 5.
10 is an arrow direction view of FIG. 5 as viewed from the C direction.
FIG. 11 is a cross-sectional view taken along the line DD of FIG. 10.
12 is a cross-sectional view taken along line FF of FIG. 10.
FIG. 13 is a cross-sectional view taken along the line EE of FIG. 11.
It is a perspective view seen from the A direction of FIG. 5 which shows the structure of a lid member and a food tray.
FIG. 15 is a perspective view of the lid member and the food tray, viewed from the direction B in FIG. 5. FIG.
16 is a perspective view showing the configuration of the pinion gear.
17 is a cross-sectional view taken along the line DD of FIG. 10.
FIG. 18 is a sectional view taken along the line DD of FIG. 10, showing a fully open state of the lid member of the pressure reduction chamber.
It is a perspective view which looked at the structure of the pressure reduction chamber from the oblique front upward, and is a figure which shows the fully open state of a cover member.
20 is a cross-sectional view taken along the line GG of FIG. 10.
It is a partial sectional drawing which shows an example of the junction part of the up-down divided outer member which comprises the pressure reduction chamber which concerns on this invention.
Fig. 22 is a partial cross-sectional view showing another embodiment of the junction portion of the outer member divided up and down constituting the decompression chamber according to the present invention.
Fig. 23 is a partial cross-sectional view showing still another embodiment of the junction portion of the outer member divided up and down constituting the decompression chamber according to the present invention.
FIG. 24 is a view showing the lock opening state of the lid member by the lid member, the support of the opening / closing handle and the lid locking guide groove member around the pressure reducing chamber shown in FIG.
FIG. 25 is a view showing a front state of the lock around the lid member, the support of the opening / closing handle, and the lid lock guide groove member of the pressure reduction chamber shown in FIG. 17.
FIG. 26 is a view showing the lid member locked state by the lid member, the support part of the opening / closing handle, and the opening / closing handle around the lid lock guide groove member shown in FIG. 17.
It is a figure which shows the state which takes out a cover member and a food tray from a pressure reduction chamber.
It is a schematic top view explaining engagement of a rack and pinion gear, and a positional relationship of an outer member and a food tray.
It is DD sectional drawing of FIG. 10 which shows the state of opening and closing of a lid member and a food tray.
It is a partial cross section explaining the disassembly procedure of a lid member and a food tray.
It is a partial sectional drawing explaining the disassembly procedure of a lid member and a food tray.
It is a partial cross section explaining the disassembly procedure of a lid member and a food tray.
It is a partial sectional drawing explaining the disassembly procedure of a lid member and a food tray.
It is a partial sectional drawing explaining the attachment procedure of a cover member and a food tray.
It is a partial sectional drawing explaining the attachment procedure of a lid member and a food tray.
It is a partial sectional drawing explaining the attachment procedure of a lid member and a food tray.
It is a partial sectional drawing explaining the attachment procedure of a lid member and a food tray.
It is a partial sectional drawing explaining the attachment procedure of a lid member and a food tray.
It is a partial sectional drawing explaining the attachment procedure of a lid member and a food tray.
40 is a partial cross-sectional view illustrating the attachment procedure of the lid member and the food tray.
It is a perspective view which shows an example of a structure of a cover member.
It is a figure which shows the example of installation of a pressure reduction chamber.
It is a figure which shows the example of installation of a pressure reduction chamber.
It is a figure which shows the example of installation of a pressure reduction chamber.
45 is a side sectional view of a decompression chamber according to another embodiment of the present invention.
46 is a perspective view of the outer member of FIG. 45.
FIG. 47 is a view showing a state in front of the lock around the lid member, the support part of the opening / closing handle, and the lid lock guide groove member of the decompression chamber according to another embodiment.
48 is a perspective view, viewed obliquely from above, of a structure of a pressure reduction chamber according to another embodiment.
Fig. 49 is a perspective view of the structure of the pressure reduction chamber according to another embodiment, as viewed obliquely from the front, showing a fully open state of the lid member.
50 is a schematic plan view of a configuration of a decompression chamber according to another embodiment, as viewed directly from above.
FIG. 51 is a sectional view taken along line FF of FIG.
FIG. 52 is a cross-sectional view taken along line GG of FIG. 50.
It is a schematic sectional drawing which shows the conventional structure of the vicinity of the opening of a lid member and an outer member.
It is a schematic sectional drawing which shows an example of the structure of the vicinity of the opening of a cover member, a reinforcement support member, and an outer member by this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the refrigerator main body 1 of the embodiment to which the present invention is applied. FIG. 2 is a cross-sectional conceptual view taken along the line A-A of FIG. 1.

<Overall Configuration of Refrigerator Body 1>

As shown in FIG. 1, the refrigerator main body 1 of this embodiment has the refrigerator compartment 2 which is a storage compartment of the refrigeration temperature zone of 6 degrees C. at the top, and the vegetable compartment 6 which is a storage chamber of the refrigeration temperature zone of 6 degrees C. at the bottom. It is arranged. Between the refrigerating chamber 2 and the vegetable compartment 6, an ice-making chamber which is a freezing chamber of a freezing temperature range of 0 degrees C or less (for example, the temperature range of about -20 degreeC--18 degreeC) partitioned between these two chambers and heat insulation ( 3) The quick freezing chamber 4 and the freezing chamber 5 are arranged. Each storage compartment is partitioned and arrange | positioned by the upper insulation partition wall 31a and the lower insulation partition wall 31b, respectively, as shown in FIG.

In the refrigerating chamber 2, a decompression chamber 13 is provided. In this embodiment, the decompression chamber 13 is a chilled temperature zone, which is a storage chamber of a temperature zone of about 1 ° C.

The refrigerating chamber 2 is provided with the refrigerating-door doors 2a and 2b of the left and right case (so-called French type | mold) divided | segmented to the front side. The ice making chamber 3, the quick freezing chamber 4, the freezing chamber 5, and the vegetable chamber 6 are each a pull-out type ice making door 3a, a quick freezing chamber door 4a, a freezing chamber door 5a and a vegetable compartment door 6a. ).

As shown in FIG. 2, the outside and inside of the refrigerator main body 1 are spaced apart by the heat insulating box 10 filled with a foamed heat insulating material (foamed polyurethane) between the inner box 10a and the outer box 10b. It is.

The inside of the chamber is spaced apart from the refrigerating chamber 2 and the quick freezing chamber 4 and the ice making chamber 3 (refer to FIG. 1, the ice making chamber 3 is not shown in FIG. 2) by the upper insulation partition wall 31a. The freezer compartment 5 and the vegetable compartment 6 are spaced apart by the lower insulation partition wall 31b.

A plurality of door pockets 32 are provided on the inner side of the refrigerating chamber doors 2a and 2b (see FIGS. 1 and 2). In the refrigerating chamber 2, a plurality of shelves 37 are provided. By the shelf 37, the refrigerating chamber 2 is divided into several storage spaces in the longitudinal direction, and the decompression chamber 13 is provided in the lowermost storage space.

As shown in FIG. 2, the quick freezer compartment 4, the freezer compartment 5, and the vegetable compartment 6 are each provided with storage containers 3b, 4b, 5b, and 6b integrally with doors provided in front of each storage compartment. have. And the ice-making chamber door 3a, the quick freezing chamber door 4a, the freezing chamber door 5a, and the vegetable chamber door 6a are pulled out to the front by hand by the handle part which is not shown in figure, respectively, and accommodating container 3b, 4b, 5b. , 6b) can be withdrawn.

Moreover, the pressure reduction chamber 13 is provided with the pressure reduction chamber cover 16 which opens and closes a front opening. Then, the retracting chamber doors 2a and 2b are opened to reach the handle 27 of the decompression chamber cover 16 and pull out the lid member 16 to the front side to take out the withdrawal container of the decompression chamber 13. It is supposed to be. The detail is mentioned later.

In the refrigerator main body 1, a refrigerating cycle for freezing and refrigerating is connected in order of a compressor, a condenser, a capillary tube, an evaporator which takes the heat of vaporization of the refrigerant and becomes a cooling source, and then a compressor (not shown). ). The evaporator serving as the cooling source is provided at the rear of the ice making chamber 3, the quick freezing chamber 4 and the freezing chamber 5, and the cold air of the evaporator is blown by the blowing fan to the ice making chamber 3, the quick freezing chamber 4 and the freezing chamber. Is sent to (5). Moreover, when it becomes below predetermined refrigeration temperature, it is sent to each storage compartment of the refrigerating chamber 2 and the vegetable compartment 6 via the openable damper apparatus which closes. In addition, it has a circulation structure in which cold air is blown into each storage chamber, and then cooled by the evaporator and blown again. Each storage chamber is maintained at a predetermined temperature by temperature control by a control device using a temperature sensor.

Next, the sectional view along the line B-B in FIG. 1 is shown in FIG. The refrigerating compartment door 2a is rotatably supported about the support shaft S1. The refrigerating chamber door 2a is provided with a translucent resin molded door pocket 32 into which a beverage or the like is projected. On the rear surface of the refrigerating compartment door 2a, a rotational section 2a2 configured to be swingable by a pressing force and a guide of the torsion coil spring is provided.

The rotary section 2a2 prevents leakage of cold air from the refrigerator compartment doors 2a and 2b at a position along the refrigerator compartment door 2a on the left side when the refrigerator compartment doors 2a and 2b are closed (see FIG. 1). . On the other hand, when opening the refrigerating compartment door 2a, it is comprised so that it may rock in the thickness direction (shown by the dashed-dotted line) of the refrigerating compartment door 2a, and it will not become an obstacle of a user.

Moreover, the refrigerating compartment door 2b of the right side is supported so that the support shaft S2 is able to rock, and the translucent resin molding door pocket 32 which puts a drink etc. protrudes inside.

<Configuration of Decompression Chamber 13 as a Gas Control Room>

The pressure reduction chamber 13 shown in FIG. 3 is a gas control chamber in which internal air is sucked in by the vacuum pump 12, and pressure-reduced to atmospheric pressure lower than atmospheric pressure, for example, 0.8 atmosphere (80 kPa) etc. That is, the decompression chamber 13 fosters a special air atmosphere for preventing oxidation of food and maintaining freshness of vegetables.

As shown in FIG. 2, the inlet port 19 of the cold air of the refrigerating chamber 2 is formed in the rear portion of the decompression chamber 13, and the air around the decompression chamber 13 is sucked to flow cold air as an arrow. (13) is indirectly cooled.

As shown in FIG. 3, a predetermined space is formed between the door pocket 32 of the refrigerating compartment door 2b and the cover member 16 of the decompression chamber 13 in a state where the refrigerating compartment door 2b is closed. It is configured not to contact.

Fig. 4 closes the refrigerating compartment door 2a on the left side and opens the refrigerating compartment door 2a in the state where the lid member 16 of the decompression chamber 13 is opened after all the refrigerating compartment doors 2a and 2b are opened. The installed door pocket 32 touches the left end of the lid member 16, and the lid member 16 is inclined. In this state, since the lid member 16 does not move smoothly in the inner side direction, the refrigerating compartment door 2a is not closed. Therefore, even when a force is applied only to the end of the lid member 16, it is preferable to move while maintaining parallelism without inclination.

Next, FIG. 5 is a perspective view of the structure of the pressure reduction chamber 13 viewed obliquely from above. The pressure reduction chamber 13 has an opening 14r on the front surface (refer to FIG. 6), and an outer member 14 divided into two vertically long, substantially rectangular parallelepiped shapes which are flat inward, and move forward and rearward to open the opening 14r. An outer circumferential wall is formed by the lid member 16 that opens and closes the door.

That is, the cover member 16 which opens and closes in order to put the thing in and out of the decompression chamber 13 is provided. Reinforcing ribs are formed on the outer surface of the outer member 14 to increase the cross-sectional coefficient to improve the strength in a straight or lattice shape. In addition, the shape of the reinforcing rib is not limited to these, but it is sufficient to increase the cross-sectional coefficient of the outer member 14 to improve the strength.

In addition, the decompression chamber 13 may be placed on any one of the shelves 37 or the upper wall portion of the shelf 37 or the storage chamber (insulation box 10) in addition to the configuration that is placed on the upper insulating partition wall 31a as in the present embodiment. May be suspended by the suspending means 100 (see FIGS. 42 to 44). That is, the container of the pressure reduction chamber 13 can be suitably adopted as long as it is a well-known installation method.

<Schematic Shape of Outer Member 14>

Next, the structure of the outer member 14 is demonstrated using FIGS. 6-8. 6 is a simplified perspective view of the outer member 14 viewed from the front upwards. The outer member 14 is a configuration in which the lower case 140 (the first outer member) and the upper case 141 (the second outer member) are joined to each other while maintaining the airtightness at the joint portion 142. It is shown as an exploded view separated into. FIG. 7 is a view seen from arrow C of FIG. 5. 8 is a cross-sectional view taken along the line K-K of FIG. 6 to 7 are schematic views of only the virtual outer member 14 from which the reinforcing rib is removed in order to make it easier to grasp the shape of the outer member 14.

The lower case 140 of the outer member 14 is resin molded using ABS (resin containing acrylonitrile, butadiene, styrene), AS (resin containing acrylonitrile, styrene) and the like. Both side walls 140a and 140b, bottom wall 14c, and rear wall 140d are integrally formed. The lower case 140 also has a front opening 14r and an upper surface opening 140e. That is, it is a shape which opened two surfaces. The connecting portion 140f constituting the upper side of the front opening 14r and the front side of the upper opening 140e is connected to the left and right side walls 140a and 140b, respectively. Moreover, it has the junction part 142 formed seamlessly over the perimeter of the upper surface opening 140e.

The upper case 141 of the outer member 14 is resin-molded using ABS (resin containing acrylonitrile, butadiene, styrene), AS (resin containing acrylonitrile, styrene) and the like. The upper case 141 is integrally formed in a shape having an upper surface wall 141e, both side walls 141a and 141b, a rear wall 141d, and a junction 142 around the entire circumference. The upper case 141 is formed to cover the upper surface opening 140e of the lower case 140 without a gap over the entire surface.

That is, the side wall 14a of the decompression chamber 13 is divided into the side wall 140a of the lower case 140 and the side wall 141a of the upper case 141. Similarly, the side wall 14b is divided into the side wall 140b of the lower case 140 and the side wall 141b of the upper case 141. In addition, the rear wall 14d is divided into a rear wall 140d of the lower case 140 and a rear wall 141d of the upper case 141.

3 and 4, a pump connecting portion 14i of an insertion through hole, which is a connecting portion with the vacuum pump 12, is provided at the rear of the outer surface behind the left surface wall 14a of the outer member 14. As shown in FIG.

As described above, when the inside of the decompression chamber 13 is depressurized by the vacuum pump 12, the outer member 14 is uniformly loaded on the entire surface by the differential pressure between the external atmospheric pressure and the internal low pressure. Is applied. Since the inside of the pressure reduction chamber 13 is low pressure, this load is applied in the direction which pushes the outer surface of the outer member 14 strongly from outside to inside. The magnitude | size of the outer member 14 is 450 mm in width and 300 mm in depth, and when a differential pressure is 0.2 atmosphere, it becomes a large load of about 270 kgf (about 2700N).

Therefore, the outer surfaces of each of the side walls 14a and 14b, the bottom wall 14c, the rear wall 14d, and the top wall 14e of the outer member 14 need to increase the cross-sectional coefficient to improve strength. There is. Therefore, each surface of the outer member 14 has a substantially curved shape of a dome shape that is curved so as to be convex outward rather than a plane. In addition, as shown by the broken line conceptually in FIG. 6, it is preferable that the outer side wall of the outer member 14 is a shape curved in the depth direction, the left-right direction, or the outer side.

Further, a first recess 14z is formed near the center of the bottom wall 14c of the lower case 140. The bottom wall 14c is a curved surface curved so as to be convex from the inner surface to the outer surface, and the center portion is formed lowest, and the first recess 14z is formed at its lowest position.

In the vicinity of the side walls 14a and 14b of the bottom wall 14c, an opening protrusion 14h extending from the vicinity of the opening 14r of the lower case 140 toward the rear wall 140d is formed, which will be described later. Similarly, when the food tray 17 is opened, the food tray 17 is supported.

The outer member 14 has a shape in which the opening 14r is longer in the width direction than the height direction. Moreover, it is a substantially circular arc shape which has a height toward both a center part from both sides. That is, the outer member 14 has a substantially rectangular parallelepiped shape which has the flat horizontally long opening 14r. As a result, the bottom wall 14c and the top wall 14e have a larger area than the other side walls 14a and 14b and the rear wall 14d. Since the load generated by the differential pressure with the atmospheric pressure when the inside is reduced in pressure is proportional to the area, it is particularly necessary to secure the strengths of the bottom wall 14c and the top wall 14e. Since the load at this time is a load in a direction in which the outer member 14 is compressed and pressed strongly from the outside, the load is subjected to the shape of the convex outward shape, for example, a dome-shaped spherical angle that forms part of a sphere. It is raising.

FIG. 7 is a view taken along arrow C of FIG. 6. As shown in Fig. 7, the opening 14r has an outer rim shape along the side walls 14a and 14b, the bottom wall 14c, and the connecting portion 140f around it. Any wall surface of the outer member 14 is formed in an arc shape which is convex outward, and the corner portions of the walls are connected by smooth arcs.

In addition, the center vicinity of the upper and lower sides of the opening 14r is made into the upper surface opening support part 14f which becomes convex toward the inside of the opening 14r, and the lower surface opening support part 14g.

When the cover member 16 mentioned later is closed, the packing 16p provided in the cover member 16 is press-contacted to the packing contact surface 14k which is a convex part formed along the edge of the opening 14r, and it seals. That is, the packing 16p is provided as a sealing member which suppresses the movement of gas between the lid member 16 and the opening 14r of the outer member 14.

8 is a cross-sectional view taken along line K-K of FIG. 6. That is, the longitudinal cross section of the outer member 14 is shown and the height dimension of an inner surface is demonstrated. The lower case 140 and the upper case 141 of the outer member 14 are integral parts each resin-molded using ABS, AS, or the like. The mold for molding is largely divided into an outer mold for forming an outer shape of the lower case 140 and an upper case 141, and an inner mold for forming an inner surface, and after the resin is injected into the mold and cooled, the inner mold is opened. The lower case 140 and the upper case 141 are each removed from the mold.

<Mold drawing direction and shape>

In this embodiment, as shown in FIG. 8, when the outer mold of the upper case 141 is drawn out in the direction of arrow AA and the inner mold is drawn in the arrow AB direction, the upper wall 141e is larger than the upper end of the opening 14r. It can be made into the shape which becomes convex upward, for example, a dome shape.

On the other hand, the outer mold of the lower case 140 has the side mold which draws in the arrow BB direction, the inner mold in the arrow BC direction, and draws the inside of the opening 14r toward the opening 14r side (arrow BD direction). I shall do it. In the range of M formed by the inner mold instead of the side mold, the bottom wall 14c can be formed in a convex downward shape, for example, a dome, than the lower end of the opening 14r. In addition, a projection such as a partial second recess 14w, first recess 14z or lower guide rail 14y may be formed. Here, the second concave portion 14w and the first concave portion 14z are formed in a range not convex downward than the lower surface 14q, which is the lowest portion of the lower case 140.

The inner mold of the lower case 140 further includes a slide mold (not shown) because the upper guide rail 14s supporting the drawing container 17, which will be described later, becomes convex inward.

Thus, the upper surface wall 141e and the bottom wall 14c can be made into the dome shape which protrudes outward, and the inner surface height ra of the outer member 14 can be made larger than the dimension rh of the opening 14r. Therefore, it is not necessary to make a taper shape inward from an opening. Therefore, it is suitable for enlarging the internal volume of the outer member 14 and increasing rigidity.

Between the opening 14r and the upper surface opening 140e, as shown in FIG. 6, a connecting portion 140f integrated with the lower case 140 is formed to form a seamless circumference around the opening 14r and the upper opening 140e. Therefore, each opening can be closed by the lid member 16 or the upper case 141 to maintain airtightness.

<Shape shape>

Next, the shape of the junction part 142 of the upper case 141 and the lower case 140 is demonstrated. As shown in FIG. 8, the upper case 141 and the lower case 140 are rearwardly lowered from the connecting portion 140f near the upper end of the opening 14r toward the center near the height direction of the rear wall 14d. It is set as the photographic plane, and the junction part 142 is formed along the division surface. The upper case 141 constitutes a part of the outer member 14 having a dome-shaped upper surface 141e, side surfaces 141a and 141b, and a rear surface 141d, and this portion is 141t high from the junction 142. The strength supporting the load at the time of decompression is obtained by cooperating with ribs arranged around the convex shape.

Here, when the dividing surface is less inclined and is closer to the horizontal plane as shown by the dashed-dotted line 142b in FIG. 8, the amount of convexity from the joining portion 142b is reduced, and the shape of the upper case 141 is close to the planar shape. Lose. Therefore, rigidity becomes small and deformation in pressure reduction becomes large.

In addition, as shown by the double-dotted line 142c of FIG. 8, when the shape of the combination of the straight line and the arc is made, the amount of convexity of the upper case 141 becomes large, so that rigidity is easily obtained, while the upper case 141 and the lower case When the radius R of the circular arc which forms the junction part of 140 has a dimension error mutually, circular arc does not completely match and a gap is easy to generate | occur | produce. In addition, when the upper case 141 is displaced in the right direction in FIG. 8, a gap is formed in a part of the inclined divided surface 142d, so that the upper case 141 and the lower case 140 are hardly in close contact with each other. In other words, in order to keep the joint part 142 in close contact with each other, high precision is necessary for the shape and dimensions of the joint surface and the positional relationship between the upper case 141 and the lower case 140, which makes it difficult to maintain the air tightness. to be.

In the present embodiment, as shown in FIG. 8, the rear surface is disposed so that the divided surface becomes a plane connecting the central portion of the rear wall 140d of the outer member 14 from the rear vicinity of the upper surface of the opening 14r. Incline to slowly descend toward. In this configuration, the upper case 141 does not become a thin plate shape, so that the thickness 141t can be appropriately secured. Since the dividing surface 142a is an inclined plane, even if a position shift occurs between the upper case 141 and the lower case 140, there is no change in the state of close contact with each other. That is, since the surfaces of the joining portions 142 are planar to each other, the precision is easy to be produced, and even if the precision of the positional relationship between the upper case 141 and the lower case 140 is low, it is easy to maintain airtightness.

With the above configuration, since the upper case 141 and the lower case 140 can both be molded of resin, there is an effect that the outer member 14 can be configured at low cost.

In addition, the outer member 14 may have an inclined surface shape in which the divided surface 142a gradually increases from the opening 14r toward the depth by reversing the relationship between the lower case 140 and the upper case 141 (FIG. 45). , See FIG. 46).

<Seal configuration>

Next, the structure which joins the upper case 141 and the lower case 140 in airtightness in the junction part 142 is demonstrated using FIGS. 21-23 which is an enlarged view of the Q part in FIG. do.

FIG. 21 shows a first embodiment, in which FIG. 21A shows a state in which the inside of the outer member 14 is at atmospheric pressure, and FIG. 21B shows a reduced pressure. Doing.

The joint 142 between the upper case 141 and the lower case 140 is fitted with a round packing 146 formed of a flexible member such as silicone rubber, which is circular in cross section and is annularly formed, and is formed on the lower case 140. The screw 143 is configured to fasten between the boss 140g and the screw boss 141g formed on the upper case 141. Between the threaded boss 141g of the upper case 141 and the threaded boss 140g of the lower case 140, the clearance gap 144a is formed to fit gently, and the axial direction of the screw 143, ie, the upper and lower sides of the screw 143, is shown. It is supported to be movable in a direction. The threaded bosses 140g and 141g are formed at approximately equal intervals along the divided surface 142a at, for example, about 10 to 15 locations around the entire circumference.

In the state of atmospheric pressure shown in FIG. 21A, the round packing 146 is sandwiched between the lower case 140 and the upper case 141, and is clamped by the fastening force of the screw 143, for example, 5 mm in diameter. It is in the state which crushed about%, and it adhere | attaches over the perimeter of the junction part 142, and maintains airtightness.

When the inside of the outer member 14 is depressurized by driving the vacuum pump 12, when the pressure difference between the inner and the outer case is 0.2 atm in the lower case 140 and the upper case 141, as described above, about 270 kgf (about 2700N) A large load is applied and pressed. This load is applied to the round packing 146 sandwiched between the lower case 140 and the upper case 141, so that, for example, 15% of the diameter is strongly pressed to maintain a high airtight enough to maintain the differential pressure inside and outside. . As the round packing 146 is crushed and deformed, the upper case 141 approaches the lower case 140 and the gap 144a decreases to 144a ', and the head of the screw 143 and the upper case 141 A gap 144b is generated between the bosses 141g.

FIG. 22 is a second embodiment, and FIG. 22A shows a state in which the pressure inside the decompression chamber 13, that is, the inside of the outer member 14 is at atmospheric pressure, and FIG. 22B shows a state where the pressure is reduced. .

The difference from the first embodiment is that the lower case 140 has a substantially rectangular cross-sectional shape and an annularly shaped packing 147 having a recess 147a in which the outer circumferential center of the cross section is recessed inward instead of the round packing 146. ) Is pressed between the packing contact portion 140h which is convex from. Even when the lower case 140 and the upper case 141 are slightly inclined or the precision of the contact surface is low, the packing 147 elastically deforms in the recess 147a, and absorbs the bias, It is possible to reliably seal between the case 140 and the upper case 141.

When the vacuum pump 12 is driven to depressurize the inside of the outer member 14, the recess 147a of the packing 147 is strongly pressed and, for example, about 15% of the thickness is pressed strongly like the round packing 146. Maintain confidentiality as much as possible to maintain internal and external pressure.

Fig. 23 is a third embodiment, and does not use an airtight member such as packing. Friction welding part 148 is formed around the upper case 141 along the joint 142 and is formed around the upper part, and the lower case 140 and the upper case 141 are pressed in the direction of the arrow to vibrate to apply friction heat. The weld 148 is dissolved. The lower case 140 and the upper case 141 are integrally welded to obtain airtightness. With such a configuration, the outer member 14 can be realized at a low cost with a simple configuration since no packing or screws as in the first or second embodiment are necessary.

In this embodiment, since the junction part 142 is made into the inclined plane shape, the distribution of the press contact force at the time of press-contacting the lower case 140 and the upper case 141 is also the same, and also the generation of frictional heat when vibration is applied. Since it is the same, it can be reliably welded and sealed. In addition, the welding part 148 may be formed in the lower case 140 instead of the upper case 141. Moreover, not only the said vibration welding but also means, such as hot plate welding (either contact or non-contact) and ultrasonic vibration, may be sufficient.

As shown in FIG. 6, the connection part 140f of the lower case 140 is weak because it is a small area | region fitted in the opening 14r and the upper surface opening 140e. According to the third embodiment, the connecting portion 140f is welded and integrated with the upper case 141 through the welding portion 148. Therefore, since the strength becomes higher than the connection part 140f single | piece | unit and the deformation | transformation at the time of pressure reduction can be prevented, it is more preferable. The outer member 14 may be formed by bonding the upper case 141 and the lower case 140 with an adhesive, for example, a silicone rubber adhesive.

Here, when the inside of the decompression chamber 13 is depressurized, all the surfaces of the outer member 14 are deformed in the direction to be pressed inward under load by atmospheric pressure, and the deformation is particularly large in the upper and lower surfaces having a large area. When the joining portions 142 are fixed to each other by the welded portion, the joining portions 142 do not cause rotational bending in the direction drawn in. Therefore, the curvature amount at the time of pressure reduction can be reduced.

<Material>

As the material of the outer member 14, it is desirable to obtain strength that withstands the load due to the differential pressure when the pressure is reduced inside. In addition, a material having high rigidity is also preferred in order to reduce the amount of warpage at the time of decompression and not compress the food stored therein. As an example, the ABS material which mixed and reinforced with glass fiber and carbon fiber as a fibrous reinforcement filler is mentioned. As a result, the bending strength is large and the Young's modulus (elastic modulus) is also increased, which can be suitably used as the outer member 14.

As shown in FIG. 8 (and FIG. 6, FIG. 7, FIG. 9, FIG. 11 etc.), the upper surface opening support part 14f which protrudes inward from the upper surface wall 14e inside the opening 14r of the outer member 14 is shown. ), The lower surface opening support part 14g which becomes convex inward from the bottom wall 14c is formed in the rear surface side of the front opening 14r. The edge of the opening 14r has a packing contact surface 14k, and the upper surface opening support part 14f is connected to the inclined surface 14m, and the lower surface opening support part 14g is connected to the inclined surface 14n, respectively.

<Relationship between lid member 16 and opening 14r>

Next, the relationship between the cover member 16 and the opening 14r is demonstrated. 9 and 11 show that the support means H (shown in broken lines) to be described later provided separately from the lid member 16 by closing the lid member 16 has an upper surface opening support portion 14f and a lower surface of the outer member 14. The state inserted between the opening support parts 14g is shown.

The space | interval with the upper surface opening support part 14f and the lower surface opening support part 14g, ie, the dimension of the height direction of the opening 14r, is slightly larger than the height dimension of the supporting means H. As shown in FIG. Thereby, the support means H is inserted smoothly.

<Configuration of Supporting Means>

As shown in Fig. 9 or 11, the supporting means H is formed in a shape that is concave inwardly so that the user's hand enters and has a space occupied by the handle operating part 36 of the opening / closing handle 26. The central portion a of the lid member 16 is formed on both left and right sides of the convex portion 24 that is convex inward of the lid member 16.

 Here, with reference to FIGS. 53-54, the structure and operation | movement of the support means H (in the prior art, the reinforcement support part integral with the lid member) are demonstrated. Fig. 53 shows a configuration in which the reinforcing support portion H shown in the prior art is installed integrally with the lid member 16. Figs. FIG. 53A shows the state in which the lid member 16 is brought close to the opening 14r, and the height of the support means H integral with the lid member 16 is e3 and the outer member 14 is shown. If the distance between the upper surface opening support part 14f and the lower surface opening support part 14g, i.e., the dimension in the height direction of the opening 14r, is e1, there is a relationship of? E1> e3.

53B shows a state in which the cover member 16 is closed and the handle 26 is moved downward to lock it. The upper side H1 and the lower side H2 of the reinforcement support part H have clearance gaps with the upper surface opening support part 14f and the lower surface opening support part 14g, respectively. FIG. 53C shows a state in which the vacuum pump 12 is operated to start to depressurize the inside, and as shown by the white arrows, the outer member 14 is compressed by atmospheric pressure from the outside, and the top opening support portion ( 14f and lower surface opening support part 14g are press-contacted by the force F1 to the upper side H1 and the lower side H2 of the support means H, and since it does not compress any more, it prevents deformation of the opening 14r. can do.

FIG. 53D shows a further reduced pressure, and the lid member 16 has a frictional force generated by the force F1 'generated on the reinforcing support part H (the force greater than F1 because the decompression progresses). [mu] F) is pulled into the outer member side, i.e., the right side of the figure. At this time, the stick slip phenomenon as described above occurs, and the lid member 16 discontinuously moves to the right, and then an intermittent squeaking sound is generated. Moreover, since only the pressure which removed the frictional force (micro F) is applied to the packing 16p provided in the cover member 16 by pressure reduction, there exists a possibility that sealing property may fall.

Next, the structure which the support means H by this invention was provided separately from the cover member 16 is shown using FIG. FIG. 54A shows the state in which the lid member 16 is brought close to the opening 14r, and is formed integrally with the lid member 16 and is a convex portion 24 drawn inwardly from the opening 14r. The distance between the upper side H1 and the lower side H2 of e) and the support means H provided separately from the lid member 16 is e2, and the distance between the upper opening support 14f and the lower opening support 14g. That is, when the dimension of the height direction of the opening 14r is e1, it exists in the relationship of e1> e2> e3. The supporting means (H) is subjected to a separate force from the lid member (16) toward the inside of the outer member (14) by the spring (22), and the upper edge (H1) and the lower edge of the support means (H) and the lid member (16). In H2, there is a gap in the left and right directions of the illustration. FIG. 54B shows a state in which the cover member 16 is closed and the handle 26 is moved downward to lock it. There is a gap between the upper surface opening support portion 14f and the lower surface opening support portion 14g at the upper and lower sides of the support means H, respectively, so that the gap is smoothly introduced into the opening 14r and the gap is released by the force of the spring 22. maintain.

FIG. 54C shows a state in which the vacuum pump 12 is operated to start to depressurize the inside, and as shown by the white arrows, the outer member 14 is compressed by atmospheric pressure from the outside, and the top opening support portion ( 14f) and lower surface opening support part 14g contact with the upper and lower sides of support means H, and are press-contacted by the force F1.

At this time, since it is a dimension relationship of e2> e3, the upper surface opening support part 14f, the lower surface opening support part 14g of the outer member 14, and the upper side H1 and lower side H2 which are integral with the cover member 16 are There is a gap without touching each other.

54D shows a further reduced pressure, and the lid member 16 is led to the outer member 14 side, that is, to the right side of the drawing. At this time, the support means H is different from the prior art shown in Fig. 53, because the support member H is supported separately from the lid member 16 and is movable so as to be in the state of Figs. 54C to 54D. Until then, the supporting means H does not move and supports to prevent deformation of the opening 14r. In addition, since the convex portion 24 of the outer member 14 and the lid member 16 are not in contact with each other and there is a gap, the lid member 16 is led to the outer member 14 side without being affected by frictional force. Since all the phosphorus input by pressure reduction is added to the packing 16p, and it fully presses, sealing property does not fall. In addition, since there is no moving member while resisting the friction force, the stick slip phenomenon does not occur and the squeaking sound can be prevented.

As a gap value, decompression is completed from the moving distance of the lid member 16 from the state of FIG. 54C to the state of FIG. 54D, ie, the handle 26 is locked. It is desirable to have a gap larger than the distance to the packing 16p to reach the maximum strongly pressed state.

As described above, in addition to the shape of the outer member 14, both side walls 14a and 14b, bottom wall 14c, rear wall 14d, top wall 141e, top opening support 14f, and bottom On each outer surface of the opening supporting portion 14g, reinforcing ribs for increasing the cross-sectional coefficient to improve the strength are further provided in a linear shape, a lattice shape, and the like, thereby securing additional strength to resist deformation due to differential pressure.

Guide rails 14s and 14s, which are protrusions along the depth direction, are provided on the inner surface side of the side walls 140a and 140b of the lower case 140, and a pair of protrusions 17g provided in the food tray 17 to be described later. , 17g) supports the rear end side of the food tray 17.

The outer member 14 is shaped as described above, and the upper case 141 and the lower case 140 molded by resin are joined to each other by the bonding portion 142. As a result, the outer member 14 can be simplified and lightweight, and can be configured at low cost, and both the expansion of the internal volume and the increase in rigidity can be achieved.

<Overall Configuration of Pressure Reducing Room 13>

Hereinafter, the structure and operation | movement of the pressure reduction chamber 13 provided with the outer member 14 are demonstrated in detail. FIG. 10 is a conceptual view seen from the arrow C direction of the pressure reduction chamber 13 shown in FIG. 5. FIG. 11 is a cross-sectional view taken along the line D-D of FIG. 10. 12 is a cross-sectional view taken along the line F-F in FIG. 10. FIG. 13 is a cross-sectional view taken along line E-E of FIG. 11. 14 is a perspective view of the food tray 17 and the lid member 16 disassembled from the outer member 14 and viewed from the direction A in FIG. 5. FIG. 15 is a perspective view seen from the direction B in FIG. 5, and part of the food tray 17 is omitted by a dashed line. FIG. 16: is a perspective view which shows the structure of the pinion gear 15 provided in the outer member 14. As shown in FIG.

<Food tray (drawer container)>

The food tray 17 (drawer container) disposed in the outer member 14 is a transparent resin molded article such as AS. As shown in FIGS. 11-15, it has both side wall 17a, 17b, the bottom wall 17c, the back wall 17d, and the front wall 17e.

The front wall 17e of the food tray 17 is connected to the recessed part 17f for arranging the later reinforcement support part H, and the front wall 17e and the recessed part 17f along the reinforcement support part H. The central side wall portion 17h is formed. 12, 14, and 15, the food tray 17 is attached to the lid member 16 on the central side wall portion 17h and the side walls 17a, 17b, and the lid member 16 is attached. Two pairs of attachment hooks 17t1 and 17t2 for interlocking with the opening and closing operation are formed. A pair of right and left protrusions 17g and 17g are formed in the vicinity of the rear wall 17d of the side walls 17a and 17b. The stopper 17n which is a convex part is formed in the cover member 16 side of the recessed part 17f.

The pair of attachment hooks 17t1 and 17t2 are formed in a semi-cylindrical shape in which the lower side is opened and one side is extended downward, and is coupled to the cylindrical projections 16g1 and 16g2 formed on the cover member 16. As a result, the food tray 17 is fixed to the lid member 16 so as to interlock with the opening and closing operation of the lid member 16.

Therefore, the user can visually recognize the inside of the food tray 17 drawn out in accordance with the opening and closing operation of the lid member 16, and can easily take out the food in the food tray 17.

<Guide rail>

As shown in Fig. 14 and Fig. 15, the food tray 17 and the lid member 16 are configured to be opened and closed in cooperation with each other. On the bottom wall 17c of the food tray 17, guide ribs 17j and 17j which are elongated and elongated in the opening and closing direction are provided. In the vicinity of the opening 14r of the bottom wall 14c of the outer member 14, guide protrusions 14t and 14t are placed to place the guide ribs 17j and 17j. A stopper 17m which is a step is provided on the rear side of the bottom surface of the food tray 17. The stopper 17m is slidably placed on the lower guide rail 14y provided on the bottom of the outer member 14.

On the side adjacent to the opening 14r of the food tray 17, that is, on the lid member 16 side, the projection rib 17j is placed on the guide protrusion 14t, and the protrusion 17g formed near the rear surface of the food tray 17, The upper surface of 17g) is supported by the lower sides of the guide rails 14s and 14s. A stopper 14v which is a step is provided on the lower guide rail 14y. When the lid member 16 and the food tray 17 are opened in conjunction with each other, the stopper 17m touches the stopper 14v in the fully open position and restricts the opening of the lid 16.

Because of the above-described configuration, the food tray 17 is guided in the front-rear direction (left and right direction of the paper in FIG. 11, paper vertical direction in FIG. 13) in conjunction with the lid member 16.

<Bottom rack pinion>

Next, FIG. 17 is sectional drawing of the pressure reduction chamber 13 which showed the process of making the cover member 16 into a fully open state. 18 is a cross-sectional view of the pressure reduction chamber 13 showing the fully open state of the lid member 16. FIG. 19 is a perspective view showing a fully open state of the lid member 16 as in FIG. 18.

On the lower surface of the bottom wall 17c of the food tray 17, that is, on the side facing the bottom wall 14c of the outer member 14, the racks 17k, which are linear gears in the front-rear direction, keep the distance from each other in left and right symmetry. It is installed.

The pinion gear 15 shown in FIG. 16 is rotatably supported by the second concave portion 14w formed in the bottom wall 14c of the outer member 14 in parallel with the opening 14r. The pinion gear 15 has a pair of left and right pinion gears 15a which are coupled to each other by a connecting shaft 15b and synchronously rotate as one body, and a support shaft 15c that protrudes further outward of the pinion gear 15a. Doing.

The second recess 14w of the outer member 14 has a substantially semi-cylindrical shape larger than the diameter of the pinion gear 15a, and both left and right ends of the second recess 14w support shafts of the pinion gear 15. The support concave portion 14x to which 15c is rotatably fitted is provided. Since the pinion gear 15 is merely put away from the upper portion in the second recess 14w, the pinion gear 15 can be removed simply by removing the food tray 17 and then lifting it upwards by holding it with a finger. . For example, even when the 2nd recessed part 14w and the pinion gear 15 are dirty, it can disassemble easily and can clean and wash | clean.

When the food tray 17 is disposed in the outer member 14, the rack 17k provided in the food tray 17 and the pinion gear 15a provided in the second recess 14w of the outer member 14 are provided. Is placed in the engaged position. However, the rack 17k is not engaged with the pinion gear 15a over the entire range in which the lid member 16 and the food tray 17 are opened and closed, but the closure of the lid member 16 and the food tray 17 is completely closed. The rack 17k is not provided in the range of the distance L1 from the position where it was. This action and effect will be described later.

The pair of racks 17k are integrally molded with the food tray 17, and the pair of pinion gears 15a rotate as one unit. Since it has such a synchronizing means, when the food tray 17 moves to the front-back direction, the rack and pinion continue to interlock | engage, and the lid member 16 will move while always keeping parallel with the opening 14r. Configuration. That is, even if a force is applied to the end portion of the lid member 16 instead of the center portion thereof, the lid member 16 or the food tray 17 can be stably moved while maintaining parallelism without inclining from side to side.

According to the above structure, it is not necessary to provide a rail member or the like in particular in order to open and close the lid member 16 and the food tray 17 back and forth, and also need to provide parts such as a support shaft for axially supporting the pinion gear. The cover member 16 and the food tray 17 can be opened and closed stably in a simple configuration.

<Configuration of the lid member 16>

As shown in FIG. 5, the lid member 16 is rotatably supported by the opening / closing handle 26 around the support shafts 16s provided on both sides thereof. In addition, the cover member 16 is comprised with the differential pressure | pressure discharge valve V shown in FIG.

The user grips the opening / closing handle 26 to lock the opening / closing operation of the lid member 16 and the closing of the lid member 16, and the opening and closing of the differential pressure discharge valve V is performed.

In addition, when the pressure reduction chamber 13 is pressure-reduced by the vacuum pump 12, the cover member 16 is influenced by the differential pressure of the atmospheric pressure of the exterior of the pressure reduction chamber 13, and the pressure reduced in the pressure reduction chamber 13 inside. The load applied is large. Thereby, in order to open the lid member 16 directly, a user requires considerable force.

Therefore, by opening the differential pressure discharge valve (V) to communicate the inner and outer space of the cover member 16, to eliminate the pressure difference between the inside and the outside to eliminate the load due to the differential pressure so that the cover member 16 can be easily opened Doing.

When the lid member 16 is closed as shown in FIG. 11, the packing 16p of an elastic material is arrange | positioned at the inner periphery which contacts the outer member 14. As shown in FIG. The packing 16p seals between the outer member 14 and the lid member 16.

As shown in FIG. 17, the packing 16p is formed in an annular shape with the recessed part 16p1 in which the outer peripheral center of the cross section is recessed inward. Even when the packing member 16p is closed with the cover member 16 slightly inclined with respect to the outer member 14, the packing 16p elastically deforms into the recess 16p1, and absorbs the bias so that the outer member ( It is possible to reliably seal between the 14 and the lid member 16. In addition, the packing 16p can also be provided on the outer member 14 side without being installed on the lid member 16.

As shown in FIG. 5, the lid member 16 is formed of a resin such as ABS having left and right end portions 16h opaque, and a transparent AS or the like such that the central portion 16c2 can visually recognize the food stored in the decompression chamber 13. Molded of resin.

As shown in FIG. 5, the distance between the both side parts 16c1 and 16c1 of the cover member 16, and the rotation drive trace of the rod 27 of the opening-closing handle 26 is below a predetermined value, for example, 7 mm Let it be as follows. That is, both side parts 16c1 and 16c1 of the cover member 16 are formed in the shape which protruded outward substantially along the circular arc shape which the rod body 27 of the opening-closing handle 26 moves.

As shown in FIG. 11, the center part 16c2 of the cover member 16 has a space where the handle operation part 36 of the opening-closing handle 26 is located so that a user's hand may enter from the outer surface side, and it recesses inwardly. It is formed in the shape of deterioration.

11 to 14, the inner side of the central portion 16c2 of the lid member 16 is a convex portion 24 having a shape projecting inward, and an outer circumferential upper wall surface H1 placed in the inner side. ), Outer circumferential lower wall surface H2 and both side wall surfaces H3 are formed continuously, and a plurality of reinforcing ribs hr extend in the vertical direction between outer circumferential upper wall surface H1 and outer circumferential lower wall surface H2. Formed. The support means H which supports the upper and lower sides of the front opening 17r is supported by the left and right both side surfaces so that the movement to the opening-closing direction of the lid member 16 is possible. The spring 22 acts to squeeze the supporting means H from the lid member 16 to the direction of the food tray 17, and as described above with reference to FIG. 54B, the lid member 16. ) And the necessary clearance between the supporting means (H).

In the present embodiment, one spring 22 is provided at each of the upper end and the lower end of the support means H. However, only one spring 22 may be provided at the center of the reinforcement support member H.

The support means H is movable in an appropriate range and has a suitable gap around the stopper 23 fitted with the lid member 16 so that the support means H does not come off from the lid member 16. Is supported by The stopper 23 forms a space movable in the height direction of the opening 14r, so that the support means H can easily move even if an error in height occurs between the opening 14r and the lid member 16. Therefore, the tip of the support means H smoothly moves inwardly to the opening 14r without causing unnecessary friction such as being caught by the upper surface opening support portion 14f and the lower surface opening support portion 14g of the outer member 14. It can be a configuration.

As shown in Fig. 20, when the support means H has an L-shaped cross section, the rigidity when the load from the opening is applied is ensured, and the support means H is mounted in the gap between the lid member 16 and the food container 17. This is desirable because it does not cause unnecessary space.

In the present embodiment, the support means H is attached to the cover member 16 via the spring 22 and the stopper 23. However, the configuration is not limited to such a configuration but may be provided on the food tray 17. .

20 is a horizontal cross-sectional view in the G-G direction in FIG. 10.

In addition, cylindrical outer projections 16g1, 16g2, and 16g3 for fixing the lid member 16 and the food tray 17 are formed on the outer surface of both sidewall surfaces H3 of the convex portion 24 of the lid member 16. It is.

The pair of attachment hooks 17t1 and 17t2 (see Figs. 14 and 15) of the food tray 17 is coupled to the protrusions 16g1 and 16g2 so that the food tray 17 is opened and closed by the lid member 16. It interlocks and draws it out, and it is comprised so that a user may visually recognize the food in the food tray 17, and it is easy to take out.

As described above, a large load is applied to the outer member 14 by the pressure difference between the external atmospheric pressure and the internal low pressure when the pressure is reduced by the vacuum pump 12.

When the lid member 16 is closed as shown in FIG. 11, the support means H provided separately from the lid member 16 between the convex portion 24 of the lid member 16 and the food container 17. ) Contacts the upper surface opening support portion 14f and the lower surface opening support portion 14g of the outer member 14 in the decompression chamber 13 to the pressure difference between the atmospheric pressure outside the decompression chamber 13 and the low pressure in the decompression chamber 13. The load applied from the upper side to the upper surface wall 141e and the upper surface opening support part 14f of the outer member 14 by the upper side, and the lower surface wall 14c and the lower surface opening support part 14g of the outer member 14 from below. The load by the differential pressure is supported, and the deformation of the decompression chamber 13 is suppressed by these loads.

10 and 11, a differential pressure discharge hole 16a is formed in the central portion 16c2 of the lid member 16 to penetrate into the pressure reduction chamber 13 of the differential pressure discharge valve V. As shown in FIG.

And the cover member 16 is supported by the valve opening-and-closing member 35 which has the valve body 35t which consists of rubber | gum etc. which have elasticity and flexibility which open and close a differential pressure discharge | release valve V, as shown in FIG. It is provided around the axis 35s so that rotation driving is possible.

Here, the support shaft 35s by which the valve opening / closing member 35 rotates and the support shaft 16s (refer FIG. 5, FIG. 11) by which the opening-closing handle 26 rotates are comprised concentrically, and the opening-closing handle The opening and closing operation of 26 is configured to be linked to the opening and closing operation of the valve body 35t via the valve opening and closing member 35.

<Configuration of the open / close handle 26>

As shown in FIG. 5 (and FIG. 11, FIG. 17, FIG. 18, FIG. 20, etc.), the opening-closing handle 26 is a rod body 27 which consists of aluminum bars, and the right and left ends of the rod body 27 are shown. The metal support parts 28 and 29 which one end is fixed, respectively, and the handle operation part 36 which penetrates the rod 27 in the center part and are used for a steering wheel operation are provided.

The left and right support portions 28 and 29 of the opening / closing handle 26 are respectively supported by the central portion so as to be rotationally driven around the left and right support shafts 16s and 16s of the lid member 16, and the guide roller ( 28r and 29r are supported so that rotation drive is possible.

As shown in FIG. 11, the opening / closing handle 26 is rotatably supported around the support shafts 16s and 16s of the left and right sides of the lid member 16. The case where the rod body 27 is located in the lowermost part of the rotation drive trajectory around the left and right support shafts 16s and 16s is closed and the lid member 16 is locked by the opening / closing handle 26. On the other hand, as shown in FIG. 17, when the rod body 27 is positioned above the rotation drive trajectory around the left and right support shafts 16s and 16s, the lid member 16 by the opening / closing handle 26 is The lock is in the open state.

The guide rollers 28r, 29r of the support parts 28, 29 on the left and right sides of the opening / closing handle 26 correspond to the cover lock guide groove members provided on the side walls 14a, 14b of both side portions of the decompression chamber 13, respectively. The cover member 16 is locked by the opening / closing handle 26 by being inserted in 30 and 30. As shown in FIG.

24, 25, and 26 show an opening / closing handle around the lid member 16 of the decompression chamber 13 shown in FIG. 17, the support 28 of the opening / closing handle 26, and the lid lock guide groove member 30. An enlarged view showing the process of locking 26).

24 is a figure which shows the locked state of the cover member 16 by the opening-closing handle 26, and FIG. 26 is the figure which shows the locked state of the cover member 16 by the opening-closing handle 26. As shown in FIG. 25 is a view showing a state in front of the lock of FIG.

In addition, since the cover lock guide groove member 30 on the left side has the same structure as the cover lock guide groove member 30 on the right side, the cover lock guide groove member 30 on the right side will be described, and the cover lock guide on the left side will be described. Description of the groove member 30 is omitted.

24 to 26, the lid lock guide groove member 30 is, for example, a resin molded member, and the guide roller 28r is brought into contact with the curved inner wall guide 30a from the side. To guide.

The inner wall guide 30a of the cover lock guide groove member 30 is formed in the following shape as viewed from the side.

That is, as shown in FIG. 24, the straight line which connects the support shaft 16s and the shaft center of the guide roller 28r in the lock open state of the cover member 16 by the opening-closing handle 26 is an inner wall guide ( Let the point of contact with 30a) be the intersection 30a1. The dimension between this intersection 30a1 and the support shaft 16s is set to c.

Moreover, as shown in FIG. 25, the straight line which connects the support shaft 16s in front of the lock of the cover member 16 by the opening-closing handle 26, and the shaft center of the guide roller 28r is connected with the inner wall guide 30a. Let the point of contact be the intersection 30a2. Let b be the dimension between this intersection 30a2 and the support shaft 16s.

Moreover, as shown in FIG. 26, the straight line which connects the support shaft 16s and the shaft center of the guide roller 28r in the locked state of the cover member 16 by the opening-closing handle 26 is the inner wall guide 30a. ) Is the point of intersection 30a3. The dimension between this intersection 30a3 and the support shaft 16s is set to a.

These a, b, and c are continuous in a curve in which the relationship between bb (state before lock (FIG. 25))> a (lock state (FIG. 26))> c (lock open state (FIG. 24)) is established, and The shape of the inner wall guide 30a shown in FIG. 24, FIG. 25, and FIG. 26 is formed from FIG.

The state before lock of the lid member 16 by the opening / closing handle 26 shown in FIG. 25 is the largest dimension b between the intersection 30a2 and the support shaft 16s. Thereby, as shown in FIG. 25, the guide roller 28r of the support part 28 comes into strong contact with, or twists, the inner wall guide 30a of the cover lock guide groove member 30. As shown in FIG. Therefore, a feeling that the lid member 16 is locked is given to the user who opens and closes the opening / closing handle 26 supported by the supporting portion 28. That is, the inner side wall guide 30a is formed so that it may lock after giving a click feeling.

When a user grips the handle operating part 36 of the opening / closing handle 26 and pushes the handle operating part 36 of the opening / closing handle 26 downward from the state in front of the lock of FIG. 25, and reaches the lock state shown in FIG. , b (locked state (FIG. 25))> a (locked state (FIG. 26)), the guide roller 28r of the support part 28 of a neutral state has the inside of the cover lock guide groove member 30 from the relationship of (a The extent to which the side wall guide 30a is deflected, that is, the degree of strong contact is alleviated. Thereby, it is comprised so that the opening-and-closing handle 26 may give the touch which pulls in and out of the lock state from the state in front of the lock in the shift operation of the opening / closing handle 26 of a user.

When the lid member 16 is opened, the user grips the handle operating portion 36 of the opening / closing handle 26 so that the membrane of the opening / closing handle 26 is moved from the lock state of FIG. 26 to the lock front of FIG. 25. The replacement 27 is lifted upwards to reach the lock open state shown in FIG. In this case, the dimension c between the intersection 30a1 and the support shaft 16s is the smallest as compared with the state before lock (see FIG. 25) and the lock state (see FIG. 26). Thereby, although the part of the heavy feeling before a lock passes once, the guide roller 28r of the support part 28 is the inner wall of the cover lock guide groove member 30, while it reaches the open state of FIG. 24 from the state of FIG. The inner wall guide 30a is formed so that the opening / closing handle 26 can be operated with a soft touch without contacting the guide 30a.

The handle operation part 36 (refer FIG. 11, FIG. 17) in the opening / closing handle 26 performs the function of the holding part and the opening and closing of the differential pressure discharge valve V when a user operates the opening / closing handle 26. FIG. It has a function to guide. That is, the opening / closing operation by the rotational drive of the opening / closing handle 26 is linked to the opening / closing valve operation of the valve body 35t via the valve opening / closing member 35. The valve body 35t is closed when the opening / closing handle 26 is closed as shown in FIG. 11, and the valve body 35t is opened when the opening and closing handle 26 is driven to rotate upward as shown in FIG. 17.

When the valve is opened, the cover member 16 at the time of opening the lid member 16 by dissolving the differential pressure by infiltrating into the decompression chamber 13 in which the outside atmosphere is depressurized by the pressure difference as indicated by the arrow in FIG. 17. ), The cover member 16 can be opened smoothly due to the loss of the load due to the differential pressure.

After the lid member 16 is closed, for example, the user presses an operation switch (not shown) or the refrigerator doors 2a and 2b are closed so that the door switch (not shown) is turned on, and then the vacuum pump 12 ) Operation is started, and the air in the pressure reduction chamber 13 is sucked and pressure reduction is started.

When the depressurization is started, the lid member 16 is urged from the outside by the differential pressure between atmospheric pressure and the internal low pressure, and the packing 16p is urged against the outer member 14 by a pressure greater than the force locked by the handle. Since the recessed part 16p1 of the packing 16p is in close contact with the state shown in FIG. 11, since the packing 16p is crushed by the large load by the differential pressure of atmospheric pressure and the low pressure inside, it produces a large surface pressure. It is possible to maintain the negative pressure inside by further improving the properties.

At this time, since the opening 14r is supported by the supporting means H provided separately from the lid member 16 so as not to deform at the time of depressurization, the lid member 16 is not subjected to frictional force from the opening 14r, and thus the pressure is reduced. As a result, as shown in (c) to (d) of FIG. 54, the sheet is smoothly drawn in to further improve the sealing property by the packing 16p. In addition, there is an effect that the occurrence of a squeaking sound can be suppressed by preventing the stick slip phenomenon when the cover member is retracted.

By the above-mentioned structure, the inside of the pressure reduction chamber 13 can be made into negative pressure and the negative pressure can be maintained by driving and decompressing the vacuum pump 12. FIG. Here, the outer member 14 of the pressure reduction chamber 13 can be formed at low cost by forming the plastic material. Moreover, by making the outer member 14 into the up-and-down two-part structure which joined and hold | maintained airtight with each other, the internal volume can be enlarged and strength can also be ensured. Moreover, since it is sealed except the opening 14r of the front surface, the sealing property of the whole pressure reduction chamber 13 can be kept favorable by sealing only between the lid member 16 and the opening 14r with the packing 16p. .

<Food Tray Disassembly>

Next, the installation and disassembly of the cover member 16 and the food tray 17 are demonstrated using FIGS. 27-29. When the food tray 17 is dirty, the lid member 16 and the food tray 17 are disassembled and washed with water.

27 is a cross-sectional view when disassembling the food tray 17 and the lid member 16. Fig. 28 is a schematic plan view illustrating the engagement between the rack and the pinion gear and the positional relationship between the outer member and the food tray. It is sectional drawing which shows the state in the middle of opening and closing.

First, as shown in FIG. 18, the food tray 17 and the cover member 16 are set to the fully open position, and as shown in FIG. 27, the front end of the cover member 16 is lifted and inclined. At this time, the stopper 17m provided on the bottom surface of the food tray 17 is peeled off from the stopper 14v provided on the bottom surface of the outer member 14, so that if it is moved obliquely forward (in the upper left direction in Fig. 27), the food The tray 17 and the lid member 16 can be integrally drawn out. In addition, if the reverse operation is performed, the food tray 17 and the lid member 16 can be attached, and the rack 17k meshes with the pinion gear 15a, and the lid member 16 is left in the depth direction as it is. It is closed by pushing it to the end.

However, the engagement of the rack 17k and the pinion gear 15a may not be performed correctly at this time. FIG. 28A illustrates a state in which the food tray 17 and the lid member 16 once removed are set on the outer member 14. 28A shows a state where a pair of racks 17k and pinion gears 15a are engaged with each other in a state where one gear is shifted from left and right, for example. For example, if the module of the rack or pinion gear is 1.5, this deviation amount is about 4.7 mm since it is one pitch of the gear.

In this way, once the lid member 16 is closed as shown in FIG. 28B while being shifted and engaged, the lid member 16 moves inclined with respect to the opening 14r. If the rack 14k and the pinion gear 15a are engaged until fully closed, the lid member 16 cannot close the opening 14r while being inclined.

Therefore, in the present embodiment, as shown in FIG. 28C, the rack 17k is not provided in the entire range of opening and closing. The lid 17k is completely closed and the rack 17k is in engagement with the pinion gear 15a in a state where the packing 16p is in contact with the opening 14r. Thereby, since the packing 16p of the cover member 16 contacts the opening 14r at the time of full closure, regardless of the engagement of the rack 17k and the pinion gear 15a, sealing can be ensured. In other words, in Fig. 28 (c), if the distance from the opening 14r of the outer member 14 to the pinion gear 15a is Lp and the distance from the rack 17k is Lr, (Lp <Lr) You can do

<Rack length>

In addition, the range in which the rack 17k is provided and the disassembly method of the cover member 16 and the food tray 17 are demonstrated by FIG. The pinion gear 15 is provided in the second recessed portion 14w formed in the lower case 140 of the outer member 14. As described above, condensation, for example, on the inner wall of the outer member 14 may accumulate and freeze in the second recess 14w. When freezing, the pinion gear 15 does not rotate, so that when the rack 17k is engaged with the pinion gear 15a, there occurs a problem that the lid member 16 and the food tray 17 are not opened while being closed.

In the present embodiment, the rack 17k does not engage with the pinion gear 15a near the fully closed position of the lid member 16 as described with reference to FIG. 28. That is, even when the pinion gear 15 does not rotate, the lid member 16 and the food tray 17 are integrally opened until the gear of the rack 17k touches the pinion gear 15a.

In this state, a gap is formed between the outer peripheral upper wall surface H1 of the reinforcing support part H and the inclined surface 14m of the upper surface opening support part 14f of the outer member 14. Therefore, if the gap is larger than the engagement height hg of the gear (gap> hg), the pinion gear 15a can be moved to the left side while lifting the lid member 16 even if the pinion gear 15a does not rotate. Therefore, the cover member 16 and the food tray 17 can be taken out. Thereafter, the pinion gear 15a frozen by the user can be taken out from the opening 14r or the ice accumulated in the second recess 14w can be discharged.

In FIG. 29, since the amount of opening of the lid member 16 is (Lr-Lp) according to the notation of FIG. 28C, the position where the gap (> hg) as shown in FIG. 29 occurs in this state. It is preferable to make a relationship.

As described above, when the pair of racks 17k provided on the bottom of the food tray 17 and the pair of pinion gears 15a provided on the bottom of the outer member 14 are completely closed, they are opened without being engaged. When the lid member 16 is closed when the lid member 16 is closed, the rack 17k and the pinion gear 15a are not engaged, but the lid member 16 closely adheres along the opening 14r. 14r) is securely sealed and kept airtight. At the time of opening and closing, the lid member 16 can be stably moved while maintaining parallelism. In addition, even when the pinion gear 15 is frozen, the food tray 17 and the lid member 16 can be disassembled.

In addition, an opening protrusion 14h extending from the vicinity of the opening 14r of the lower case 140 toward the rear wall 140d is formed, and the bottom surface of the food tray 17 is supported by the reaction force W 'to cover the lid. Since the tip of the member 16 and the food tray 17 are prevented from sagging downward, there is an effect that the food tray is reliably supported.

<Disassembly of Food Tray and Cover Member>

Next, the structure which disassembles the food tray 17 from the lid member 16 is demonstrated in detail using FIGS. 30-41. 30 is a state diagram in which the lid member 16 is installed in the food tray 17. 31 to 33 are partial cross-sectional views illustrating the operation of disassembling the lid member 16 from the food tray 17. 34 to 38 are partial cross-sectional views showing the operation of attaching the lid member 16 to the food tray 17. FIG. 39 shows a state in which the lid member 16 is attached to the food tray 17.

In Fig. 30, as described above, the front wall 17e of the food tray 17 has a recess 17f for arranging the reinforcement support H, a front wall 17e along the reinforcement support H, and The center side wall part 17h which connects the recessed part 17f is formed. 12, 14, and 15, the food tray 17 is attached to the lid member 16 on the central side wall portion 17h and the side walls 17a, 17b, and the lid member 16 is attached. Two pairs of attachment hooks 17t1 and 17t2 for interlocking with the opening and closing operation are formed.

These two pairs of attachment hooks 17t1 and 17t2 are formed in a semi-cylindrical shape in which the lower part is opened and extended in one side downward, as described above, and the cylindrical projections 16g1 formed in the cover member 16. 16 g2), the food tray 17 is fixed to the lid member 16 to interlock with the opening / closing operation of the lid member 16. In addition, an attachment hook 17t3 open upward is provided at an upper portion of the attachment hook 17t2, and a cylindrical protrusion 16g3 is a predetermined distance U from the bottom surface 17t4 of the attachment hook 17t3. It is formed spaced apart upwards by.

A locking rib 16j extends horizontally from the central portion 16c2 of the lid member 16 toward the recessed portion 17f of the food tray 17. The stopper 17n extends horizontally toward the lid member 16 from the recessed portion 17f of the food tray 17. The upper surface of the stopper 17n is a positional relationship fitted with the lower surface of the locking rib 16j. By fitting the locking rib 16j and the stopper 17n, the lid member 16 is locked so that it cannot move downward with respect to the food tray 17. As shown in FIG. Therefore, the food tray 17 and the lid member 16 are fixed as shown in FIG. 14 or FIG. 15.

Next, an operation of disassembling the lid member 16 from the food tray 17 will be described. As shown in FIG. 31, when a finger is applied to the center upper end of the recessed part 17f of the food tray 17, and a force is applied in the direction of the arrow 18, the recessed part 17f deform | transforms and the stopper 17n and the locking rib are carried out. The fitting of 16j is peeled off. Then, the lid member 16 is lowered by the distance U as shown by the arrow 20 until the support 16 is removed and the cylindrical projection 16g3 contacts the bottom surface 17t4 of the attachment hook 17t3. The cylindrical projections 16g1 and 16g2 are peeled off from the attachment hooks 17t1 and 17t2. Here, since the cover member 16 is supported by the bottom surface 17t4 of the attachment hook 17t3, the cover member 16 is peeled off from the food tray 17, and it does not fall suddenly.

Next, as shown in FIG. 32, when the cover member 16 is rotated clockwise as shown by an arrow, the cover member 16 rotates around the cylindrical projection 16g3, and is shown by FIG. As described above, the lid member 16 can be disassembled from the food tray 17 by moving upward.

Next, an example of an attachment procedure is demonstrated using FIGS. 34-39. As shown in FIG. 34, the surface on which the packing 16p of the lid member 16 is mounted is lowered toward the food tray 17 in a substantially horizontal state facing downward, and as shown in FIG. The outer peripheral upper wall surface H1 of H) is caught by the upper end 17f1 of the recessed part 17f of the food tray 17. As shown in FIG. Here, the distance r1 from the upper end 17f1 to the projection 16g3 and the dimension r2 from the attachment hook 17t3 to the upper end 17f1 are substantially the same. Therefore, if the cover member 16 is rotated counterclockwise in the direction of the arrow about the upper end 17f1 as shown in FIG. 36, the projection 16g3 is introduced into the groove of the attachment hook 17t3 as shown in FIG. . If the width of the vicinity of the upper surface of the attachment hook 17t3 is made wider, it becomes a guide when the projection 16g3 is introduce | transduced, and it is preferable because the operation | movement is smoother.

Next, FIG. 38 shows the state in which the lid 16 is rotated in the counterclockwise direction until the projection 16g3 is supported as the supporting point until the lid 16 is vertical. The lid member 16 is in a state where the projection 16g3 is placed on the bottom surface 17t4 of the attachment hook 17t3. Next, as shown in FIG. 39, when the lid member 16 is moved in the direction of the arrow 21 from below, the projections 16g1 and 16g2 are fitted to the attachment hooks 17t1 and 17t2, respectively. When the stopper inclined surface 17p is pressed by the locking rib 16j, the recessed portion 17f is bent once as shown by the broken line 17f ', and then returned by elasticity, so that the top surface of the stopper 17n is formed of the locking rib 16j. A positional relationship with the lower surface is obtained. The state of FIG. 39 is the same as that of FIG. 30, and the lid member 16 and the food tray 17 are fixed to each other, and are in the state shown in FIG.

Since the above configuration can be easily disassembled and reattached to only the food tray 17, for example, it is possible to provide a refrigerator having good ease of use, which is easy to wash only the food tray 17 with water.

<Support shaft deformation prevention>

First, as shown by FIGS. 38-39, the cover member 16 is moved with respect to the food tray 17 from the downward direction to the arrow 21, and the cover member 16 and the food tray 17 are fixed to each other. . At this time, an example of the operation in which the center portion of the lid member 16 provided with the handle 26 is held by hand is shown in sectional view in FIG. 40. In this embodiment, a fingertip other than the thumb is applied to the protrusion 16t formed integrally with the lid member 16 near the support shaft 35s to apply the force in the direction of the arrow 21. Here, if there is no projection 16t, the fingertips other than the thumb may be caught by the support shaft 35s of the valve opening / closing member 35. Here, the support shaft 35s of the valve opening / closing member 35 is rotatable and difficult to grip because there is no sufficient size compared to the fingertip. In particular, when attaching the lid member 16 to the food tray 17 as shown in Figs. 38 and 39, a force in the direction of the arrow 21 is applied to the support shaft 35s so that the support shaft 35s is Because of the deformation, the grip is unstable. In addition, when a force is forcibly applied, the support shaft 35s may be damaged.

Therefore, in this embodiment, the projection 16t which hangs a fingertip in the vicinity of 35s of support shafts is formed integrally with the cover member 16. As shown in FIG. Thereby, the part which a fingertip touches is firm and a force is fully applied to a fingertip.

In addition, the gap between the projection 16t and the valve opening / closing member 35 is formed to be close to, for example, 5 mm or less so that a finger cannot be inserted between the projection 16t and the valve opening / closing member 35. This is preferable because a finger cannot be placed on the valve opening / closing member 35.

With the above configuration, the lid member 16 can be gripped stably with one hand, and it is easy to apply a force when the lid member 16 and the food tray 17 are detached from each other, thereby deforming the support shaft 35s. In addition, the method of fixing the lid member 16 and the food tray 17 with high reliability can be realized by preventing damage.

<Effect>

According to the present invention as described above, the resin molded articles obtained by dividing the outer member 14 up and down are hermetically sealed to each other, and the dome shape is further convex to the outside, thereby expanding the contents and securing strength. can do. In addition, since the upper case 141 and the lower case 140 can both be molded of resin, the outer member 14 can be inexpensively configured.

In particular, by welding the connection parts of the upper case and the lower case when keeping it airtight, it is preferable because sealing parts such as rubber packing are unnecessary, reliability can be improved, and the configuration can be made cheaper.

Moreover, since the deformation | transformation to the inside of the opening 14r of the outer member 14 by pressure reduction is supported by the support means H separate from the lid member 16, the lid member 16 is the opening 14r. Since it is smoothly drawn in together with the decompression without receiving the frictional force, it does not cause the stick slip phenomenon, so that there is an effect that it does not generate an intermittent squeaking sound. Moreover, since the input force by pressure reduction is added to the packing 16p without being reduced by friction force, there exists an effect that sealing property improves.

In addition, the cover member 16 and the food tray 17 are fixed to each other to open and close each other. A pair of pinion gears fitted to the rack provided on the bottom surface of the food tray and the recess formed on the inner bottom surface of the outer member are provided. Interlocking configuration. Thereby, in order to open and close the cover member 16 and the food tray 17 back and forth, it becomes unnecessary to provide a rail member etc. in particular. In addition, in order to axially support the pinion gear, there is no need to provide a component such as a support shaft, and the opening and closing operation can be performed while keeping the lid member 16 and the food tray 17 in parallel in a simple configuration.

In addition, since the lid member 16 and the food tray 17 can be detached and detached easily, for example, it is possible to provide a refrigerator having good ease of use, in which only the food tray 17 can be easily washed with water.

In addition, when the lid member 16 is gripped with one hand or when the lid member 16 and the food tray 17 are fixed to each other, the user is easy to apply a force, thereby preventing deformation or damage of the support shaft 35s. A highly reliable method of fixing the lid member 16 and the food tray 17 can be realized.

<Cover side support>

Next, another embodiment will be described with reference to FIG. 47. FIG. 47 is a view showing a state in front of the lock around the lid member of the decompression chamber, the support of the opening / closing handle, and the lid lock guide groove member similarly to FIG. 25. FIG. 47 differs from FIG. 25 by forming protrusions 16b (protrusions, position regulating portions) that are extended toward the outer member 14 on the outer sides of the left and right sides of the lid member 16, and on the outer member 14. It is the point which formed the accommodating part 14p which supports the lower side of the processus | protrusion 16b. Moreover, the projection 16b and the accommodating part 14p are located below the support shaft 16s of the opening-closing handle 26. As shown in FIG.

In FIG. 47, when the lid member 16 is abolished, the opening / closing handle 26 is pushed down to the lid member lock state. At this time, the lid member 16 is pushed down by the opening / closing handle 26 via the support shaft 16s, and the lid member 16 as a whole is pushed down. In the present embodiment, the lid 16 is prevented from falling by supporting the projection 16b by the housing portion 14p. In addition, the projection 16b (position regulating section) maintains the positional relationship between the lid member 16 and the outer member 14 with high accuracy, thereby making it possible to more reliably seal the packing 16p. It works.

<Supportive>

In addition, FIG. 48 is a perspective view of the structure of the decompression chamber as viewed obliquely from above in the same manner as in FIG. 5. FIG. 48 differs from FIG. 5 in that the supporting projections 14p2 (supporting portions, position regulating portions) that extend from the lower side of the outer member 14 toward the lid member 16 side are formed. As a result, when the lid member 16 is closed, the lower side of the lid member 16 is supported to maintain the positional relationship between the lid member 16 and the outer member 14 with high accuracy and seal with the packing 16p. There is an effect that can be made more certain.

<Inner support>

In addition, FIG. 49 is a perspective view of the structure of the pressure reduction chamber 13 viewed obliquely from above from above in the same manner as in FIG. 19, showing a fully open state of the lid member 16. The difference from FIG. 19 is that the lid member 16 is provided with a positioning rib 16b2 (positioning portion, position regulating portion) at a position to be inserted inside the opening 14r. Thus, when the lid member 16 is closed, the positioning ribs 16b2 are fitted inside the opening 14r, so that the positional relationship between the lid member 16 and the outer member 14 can be maintained with high accuracy. It is said to have an effect.

<Packing thickness>

Another embodiment will be described with reference to FIGS. 50 to 52. 50 is a schematic plan view of the configuration of the pressure reduction chamber 13 viewed directly from above, and is in a lid member locked state in which the lid member 16 is closed. 51 and 52 are a cross-sectional view taken along the line F-F and G-G of FIG. 50, respectively.

The left and right support portions 28 and 29 of the opening / closing handle 26 that lock the lid member 16 are provided at the left and right ends of the lid member. Therefore, the left and right end portions of the lid member 16 are proximate until the gap with the outer member 14 becomes a predetermined g1. However, in the center portion, the lid member 16 is bent under the reaction force of the packing 16p, and the gap becomes g2 (> g1) to deform into a shape in which the center portion of the lid member 16 is floated. Such a deformation | transformation is remarkable when the cover member 16 is comprised with resin and the whole width | variety of the decompression chamber was enlarged.

As a preferable shape of the packing 16p which seals between the cover member 16 deformed in this way and the opening 14r of the outer member 14, the gaps g1 and g2 as shown in Figs. The thickness of the left and right ends is 16p2, and the thickness of the center portion is 16p3 (> 16p2). As a result, the center and the left and right ends are uniformly contacted to maintain airtightness. That is, by varying the thickness of the packing 16p so that the center side is larger than both ends at the left and right ends and the central portion, the overall width of the pressure reduction chamber 13 can be enlarged while the cover member 16 is made of resin inexpensively. It is effective.

In addition, when the cover member 16 and the food tray 17 are taken out from the outer member 14 and disassembled, the user lifts the handle operation part 36 of the opening / closing handle 26 by hand (see FIG. 40). At this time, the user's forefinger or middle finger is caught by the projection 16t, so that the nail can be prevented from being damaged. In addition, the thumb of the user who is exerted the most force is caught in the center of the packing 16p. Thereby, since the grip force of a thumb improves, the operability which takes out and disassembles the lid member 16 and the food tray 17 from the outer member 14 improves.

1: refrigerator body
2: cold storage room
3: ice making room
4: deep freezer
5: freezer
6: vegetable room
12: vacuum pump
13: decompression chamber (storage chamber, gas control room)
14: outer member (storage container)
14p: receptacle
14p2: Supporting protrusion (supporting part, position limiting part)
15: pinion gear
15b: connecting shaft (synchronous means)
16: pressure reduction chamber cover (cover member)
16b: protrusion (projection part, position control part)
16b2: Positioning rib (positioning section, position regulating section)
16p: Packing (seal member)
16t: turning
17: food tray (drawer container)
22: spring
24: convex
35: valve opening and closing member
35s: support shaft
35t: valve body
140: lower case (first outer member)
141: upper case (second outer member)
H: support means
V: Differential Pressure Discharge Valve

Claims (5)

A box-shaped storage chamber having openings longer in the horizontal direction than the vertical direction, a lid member for opening and closing the opening of the storage chamber, and pressure-reducing means for making the storage chamber lower than atmospheric pressure; And a supporting means provided at a portion that enters into the opening of the storage compartment, from the inside thereof, to support the opening of the storage compartment. The refrigerator according to claim 1, wherein said supporting means is provided separately from said lid member. The height dimension of the said opening of the said storage chamber is set to e1, the height dimension of the said support means is e2, and the height dimension of the part which enters into the said opening of the said storage chamber of the said lid member is set to e3. and e1> e2> e3. The refrigerator according to claim 1 or 2, wherein the supporting means is supported to be movable in the opening and closing direction of the lid member, and a pressing member is provided to press the supporting means toward the inside of the storage compartment. . 3. The rotational drive according to claim 1 or 2, further comprising: a lock position for positioning the lid member to block the opening of the storage compartment and a rotational position for positioning the lid member for opening the opening of the storage compartment. Having a axially supported handle,
The amount of movement in the opening-and-closing direction of the said lid member of the said support means is larger than the amount of movement from the lock position of the said handle by the pressure reduction of the said storage compartment.

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