JP6167278B2 - refrigerator - Google Patents

Description

  The present invention relates to the structure of a heat insulating box of a refrigerator.

Conventionally, in order to simplify the structure of a heat insulating box of a refrigerator, there is one in which an outer box and an inner box are fixed with an adhesive or an adhesive. (For example, see Patent Document 1)
6 is a schematic perspective view of a conventional refrigerator described in the above publication, and FIG. 7 is a sectional view taken along line AA in FIG.

  As shown in FIGS. 6 and 7, the heat insulating box 2 of the refrigerator 1 is configured by filling and foaming a foam heat insulating material 5 between the outer box 3 and the inner box 4. The outer box 3 has the outer box front flange 3a folded back to form a folded portion 3b. The inner box 4 includes an inner box front flange 4a, and the outer surface of the inner box flange 4a and the inner surface of the outer box front flange 3a excluding the folded portion 3b are fixed by an adhesive 6 such as an adhesive or an adhesive. ing.

Japanese Utility Model Publication No.58-111893

  However, in the conventional configuration, the outer surface of the inner box flange 4a and the inner surface of the outer box front flange 3a excluding the folded portion 3b are fixed by the fixing agent 6, but the fixing material before being fixed by the fixing agent 6 is used. No specific description was given regarding the coating range (L1) of 6, and there was a problem that the fixing strength could not be secured when the coating range was narrow.

In order to solve the above-described conventional problems, the refrigerator of the present invention is such that the heat insulating box having a front opening is foam-filled with a heat insulating material between the outer box and the inner box, and the front opening is the outer box. A front part and an inner box front part, wherein the outer box front part extends substantially parallel to the opening surface of the heat insulating box body, and the inner box side end of the outer box flat part The outer box rising part extending in the back side direction of the heat insulation box body, and a substantially staircase shape from the end of the inner box flat part of the inner box front part toward the back side of the refrigerator main body An inner box stepped portion, and an inner box recess protruding from the inner box plane portion toward the heat insulating material,
The outer box rising part is accommodated in the inner box step part, and the fixing member before fixing the fixing member by fixing the front part of the inner box and the heat insulating material side of the flat part of the outer box by the fixing member. The coating range in the width direction is 8 mm or more.

  Thereby, a predetermined fixing strength can be secured with respect to the fixing between the inner box front part and the outer box plane part.

  The refrigerator of this invention can ensure the safety | security of a refrigerator because a heat insulation box is provided with predetermined rigidity.

Front view of the refrigerator in Embodiment 1 of the present invention BB line principal part sectional drawing of the refrigerator of FIG. Relational diagram showing the relationship between the application range of the fixing member and the fixing strength depending on the application thickness in Embodiment 1 of the present invention BB line principal part sectional view equivalent to Drawing 2 of a refrigerator in Embodiment 2 of the present invention. BB line principal part sectional view equivalent to Drawing 2 of a refrigerator in Embodiment 3 of the present invention. Schematic configuration perspective view of a conventional refrigerator AA line sectional view of FIG.

According to a first aspect of the present invention, a heat insulating box having a front opening is a foam filled with a heat insulating material between an outer box and an inner box, and the front opening has an outer box front part and an inner box front part. And the outer box front part extends substantially parallel to the opening surface of the heat insulating box body, and the inner box side end of the outer box flat part extends toward the back side of the heat insulating box body. The extended outer box rising part , the inner box step part formed in a substantially step shape from the end of the inner box flat part of the inner box front part toward the back of the refrigerator main body, and the inner box An inner box recess projecting toward the heat insulating material from the box flat surface portion, and the outer box rising portion is accommodated in the inner box stepped portion, and the heat insulating material side of the inner box front portion and the outer box flat surface portion Are fixed by a fixing member, and the application range in the width direction of the fixing member before fixing the fixing member is 8 mm or more.

  Thereby, it can have predetermined | prescribed fixed strength of an inner-box front part and an outer-box plane part, and the safety | security of a refrigerator is securable because a heat insulation box body is provided with predetermined rigidity.

  2nd invention WHEREIN: The application | coating thickness of the fixing member before fixing the said fixing member of the said refrigerator in 1st invention shall be 0.2 mm or more.

  Thereby, since it can have predetermined | prescribed fixed strength more stably with an inner case front part and an outer case plane part, the safety | security of a refrigerator increases.

  According to a third invention, in the first or second invention, the application range in the width direction of the fixing member before fixing the fixing member is set to 15 mm or less.

  As a result, it is possible to secure a predetermined fixing strength between the front part of the inner box and the flat part of the outer box without unnecessarily increasing the amount of use of the fixing member, thereby suppressing an increase in the material cost of the fixing member and the application man-hours. can do.

  According to a fourth invention, in the second or third invention, the application thickness of the fixing member before fixing the fixing member of the refrigerator is set to 0.6 mm or less.

  Thereby, the increase in the material cost and application man-hour of a fixing member can be suppressed further.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along line BB in FIG. 1, and FIG. 3 is an application range of a fixing member according to Embodiment 1 of the present invention. It is a relationship figure which shows the relationship of the adhesion strength by application | coating thickness.

  1 and 2, the heat insulating box 21 of the refrigerator main body 20 includes an inner box 22 formed of an ABS sheet by male vacuum forming and an outer box 23 formed of a metal magnetic material such as a steel plate, for example. Insulating wall 24 is formed from a heat insulating wall filled with foam, and has a front opening 21a, and partition wall 25 forms a refrigerator compartment 26, a freezer compartment 27, and a plurality of storage compartments from above. doing.

  The storage set temperature of the refrigerator compartment 26 is set in the refrigerator temperature zone, and the storage preset temperature of the freezer compartment 27 is set in the freezer temperature zone.

  In addition, each storage room is provided with a refrigerator door 26a and a freezer door 27a that close the front opening 21a when fully closed, are connected to the heat insulation box 21, and each have a heat insulation wall.

  Moreover, the heat insulation box 21 is provided with the refrigerating cycle (not shown) which cools the refrigerator main body 20 at the time of an operation | movement.

  The front opening 21a includes an inner box front part 22a and an outer box front part 23a.

  The outer box front portion 23a is integrally formed with the outer surface of the heat insulating box 21, and has an outer box plane portion 23b extending substantially parallel to the opening surface of the front opening 21a of the refrigerator body 20, and the outer box plane portion. The end surface of 23b is arrange | positioned in each store room space.

  The inner box front portion 22a is disposed closer to the heat insulating material 24 than the outer box front portion 23a.

  The inner box front portion 22 a is formed by integral molding with the upper and lower surfaces and both side surfaces of the inner box 22, and extends substantially parallel to the outer box plane portion 23 b, and the inner box plane portion 22 b and the inner box 22. And an inner box stepped portion 22c that connects the upper and lower surfaces and both side surfaces. That is, the inner box step part 22c is provided with a step that is recessed toward the heat insulating material 24 at the end of the inner box flat part 22b on the storage chamber side.

  The inner box step portion 22 c is formed in a substantially step shape from the end of the inner box flat surface portion 22 b on the storage chamber side toward the back of the refrigerator main body 20.

  Further, the inner box flat surface portion 22b is fixed to the entire circumference of the front opening 21a on the heat insulating material 24 side of the outer box flat surface portion 23b by a fixing member 28 using an adhesive such as an adhesive or a double-sided tape. .

  At this time, the end surface of the outer box plane portion 23b is substantially the same as the storage chamber side end portion of the inner box plane portion 22b, or is located slightly outside the storage chamber side end portion of the inner box plane portion 22b. The outer box flat surface part 23b which is not fixed is arranged so as not to be exposed to the inner box step part 22c.

  Further, the application range (L2) in the width direction of the fixing member before fixing the fixing member 28 is set to 8 mm, and the coating thickness (T2) is set to 0.2 mm.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, because the inner box front portion 22a and the outer box front portion 23a are fixed to the entire circumference of the front opening 21a by the fixing member 28, the heat insulating material 24 leaks even if the heat insulating material 24 is filled with foam. There is no.

  At the time of fixing, in order to fix the inner box flat part 22b and the outer box flat part 23b stably, it is necessary to ensure the flatness of each.

  Since the outer box 23 uses a steel plate, it is relatively easy to ensure the flatness of the outer box flat portion 23b.

  On the other hand, the inner box 22 formed by male vacuum molding tends to have the thinnest inner box plane portion 22b due to the characteristics of molding, and the inner box plane portion 22b is likely to be wavy and warped during molding. .

  However, in the present embodiment, by providing the inner box step portion 22c, the length of the inner box flat surface portion 22b is minimized, and undulation and warpage are less likely to occur.

  Further, by providing the inner box step portion 22c, the cross-section secondary moment of the inner box front portion 22a is increased, and the rigidity of the inner box front portion 22a is increased. Fixing is easy.

  Moreover, since it arrange | positions so that the end surface of the outer case plane part 23b may not be exposed to the inner case step part 22c, it is difficult for a user to touch the end surface of the outer case plane part 23b.

  As described above, in the present embodiment, the flatness of the inner box plane portion 22b can be ensured without using a complicated mold structure or equipment for molding the inner box 22, and the refrigerator body 20 The appearance design can be kept stable.

  In addition, the inner member flat part 22b and the outer case flat part 23b can be easily fixed by the fixing member 28, and the stability of the appearance design can be further improved.

  Furthermore, since possibility that a user may touch the end surface of the outer box plane part 23b can also be reduced, the safety | security of the refrigerator main body 20 can be ensured.

  FIG. 3 shows the results of verification of the fixing strength by changing the application range and application thickness of fixing members such as various adhesives and double-sided tapes.

  According to this, it can be understood that the degree of decrease in the fixing strength when the application range (L2) is changed from 8 mm to 5 mm is large.

  Further, even if the range is expanded to 15 mm, the fixing strength is only slightly increased, and it is considered that a coating range (L2) of about 8 mm is sufficient.

  The fixing strength between the inner box front portion 22a and the outer box flat surface portion 23b by the fixing member 28 greatly affects the rigidity of the heat insulating box body 21, and ensures the safety of the refrigerator main body 20 by providing a predetermined fixing strength. be able to.

  Conversely, limiting the application range of the fixing member 28 may reduce the fixing strength, but naturally the increase in material cost and application man-hour of the fixing member 28 can be suppressed, and in addition, L2 should be made as small as possible. However, since the length of the outer box flat surface portion 23b can be shortened and the refrigerator main body 20 looks smart, it can be said that it is preferable also from the appearance design side of the refrigerator main body 20.

  Therefore, the application range (L2) can be said to be a very important parameter when the inner box front part 22a and the outer box flat part 23b are fixed by the fixing member 28.

  On the other hand, when the coating thickness (T2) is 0.2 mm or less, it can be seen that the fixing strength rapidly decreases.

  This is because it is difficult to obtain a sufficient fixing area when the coating thickness (T2) is thin due to warpage or minute unevenness that occurs during the molding of the inner box front portion 22a, and the variation in fixing strength increases. This is thought to be a factor.

  On the other hand, since the fixing strength does not increase even if the thickness is increased, the thinnest fixing member 28 may be selected in consideration of variations in fixing strength in order to suppress the increase in material cost and application man-hour of the fixing member 28. .

In this embodiment, since the fixing strength does not change greatly even if the coating thickness (T2) is 0.6 mm or more, the upper limit of the coating thickness (T2) is preferably about 0.6 mm.

(Embodiment 2)
FIG. 4 shows a cross-sectional view of an essential part of the refrigerator according to the second embodiment of the present invention, taken along line BB in FIG. In addition, the same code | symbol is attached | subjected about the structure same as Embodiment 1, and detailed description is abbreviate | omitted.

  In FIG. 4, the heat insulating box body 101 of the refrigerator main body 100 is, for example, between an inner box 102 formed of an ABS sheet by male vacuum forming and an outer box 103 formed of a metal magnetic material such as a steel plate. The heat insulating material 104 is formed from a heat insulating wall filled with foam and has a front opening 101a.

  The front opening 101a includes an inner box front part 102a and an outer box front part 103a.

  The outer box front part 103a is formed by being bent integrally with the outer front side surface of the heat insulating box 101, and has an outer box plane part 103b extending substantially parallel to the opening surface of the front opening part 101a of the refrigerator main body 100. The end surface of 23b is arrange | positioned in each store room space.

  The inner box front part 102a is disposed closer to the heat insulating material 104 than the outer box front part 103a.

  The inner box front part 102a is formed by integral molding with the upper and lower surfaces and both side faces of the inner box 102, and extends substantially parallel to the outer box plane part 103b. The inner box plane part 102b and the inner box 102 And an inner box stepped portion 102c that connects the upper and lower surfaces and both side surfaces.

  The inner box stepped portion 102c once protrudes from the end of the inner box flat surface portion 102b on the storage chamber side in the front direction of the refrigerator main body 100, protrudes the same as or slightly to the end surface of the outer case flat surface portion 103b, After extending in a substantially flat shape toward the storage chamber, the upper and lower surfaces and both side surfaces of the inner box 102 are connected.

  In addition, the inner box flat surface portion 102b is fixed to the entire periphery of the front opening 101a on the heat insulating material 104 side of the outer case flat surface portion 103b with a fixing member 105 using an adhesive such as an adhesive or a double-sided tape. .

  At this time, the end surface of the outer box flat portion 103b is close to the inner box stepped portion 102c, and is arranged so that the end surface cannot be seen by the user.

  Further, the application range (L3) in the width direction of the fixing member before fixing the fixing member 28 is set to 8 mm, and the coating thickness (T3) is set to 0.2 mm.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, since the inner box front portion 102a and the outer box front portion 103a are fixed to the entire periphery of the front opening 101a by the fixing member 105, the heat insulating material 104 leaks even if the heat insulating material 104 is foam-filled. There is no.

  Further, in the present embodiment, by providing the inner box stepped portion 102c, the length of the inner box flat surface portion 102b is minimized, and undulation and warpage are less likely to occur.

Further, by providing the inner box step 102c, the moment of inertia of the cross section of the inner box front part 102a is increased, and the rigidity of the inner box front part 102a is increased. Fixing is easy.

  Further, since the end face of the outer box flat surface portion 103b is arranged so as not to be exposed to the inner box stepped portion 102c, the user does not see or touch the end surface of the outer box flat surface portion 103b.

  As described above, in the present embodiment, the flatness of the inner box plane portion 102b can be ensured without using a complicated mold structure or equipment for molding the inner box 102, and the refrigerator main body 100 can be secured. The appearance design can be kept stable.

  Further, the inner box flat surface portion 102b and the outer box flat surface portion 103b can be easily fixed by the fixing member 105, and the stability of the appearance design is further increased.

  Moreover, since it can prevent that a user is injured by the end surface of the outer case flat part 103b, the safety | security of the refrigerator main body 100 can be ensured.

  Furthermore, since the end surface of the outer box plane part 103b is not visible to the user, even if a steel plate is used as the material of the outer box 103, it is possible to prevent the appearance design of the refrigerator main body 100 from being deteriorated due to the rust of the outer box plane part 103b.

  Further, the amount of the fixing member 105 used is the same as that of the first embodiment, and similarly, the material cost and the application cost of the fixing member 105 are suppressed while securing the rigidity of the heat insulating box 101 and the safety of the refrigerator main body 100. doing.

(Embodiment 3)
FIG. 5: shows the principal part sectional drawing of the BB line of FIG. 1 of the refrigerator in Embodiment 3 of this invention. In addition, the same number is attached | subjected about the structure same as Embodiment 1 or 2, and description is abbreviate | omitted.

  In FIG. 5, the heat insulation box 201 of the refrigerator main body 200 includes, for example, an ABS sheet between an inner box 202 formed by male vacuum forming and an outer box 203 formed of a metal magnetic material such as a steel plate. The heat insulating material 204 is formed from a heat insulating wall filled with foam and has a front opening 201a.

  The front opening 201a includes an inner box front part 202a and an outer box front part 203a.

  The outer box front part 203a is formed by being bent integrally with the outer surface of the heat insulating box 201, and extends in a manner substantially parallel to the opening surface of the refrigerator body 200, and the storage box side end of the outer box flat part 203b. And an outer box rising portion 203c that is curled in the direction toward the back side of the refrigerator main body 200 and the heat insulating material 204, and the end surface of the outer box rising portion 203c is arranged in each storage room space. Yes.

  The inner box front portion 202a is disposed closer to the heat insulating material 204 than the outer box front portion 203a.

  The inner box front portion 202a is formed by integral molding with the upper and lower surfaces and both side surfaces of the inner box 202, and extends substantially parallel to the outer box plane portion 203b, and the inner box plane portion 202b and the inner box 202. An inner box stepped portion 202c that connects the upper and lower surfaces and both side surfaces of the inner case, and an inner box recessed portion 202d that extends substantially parallel to the longitudinal direction of the inner box flat surface portion 202b and protrudes toward the heat insulating material 204 from the inner box flat surface portion 202b. Have

The inner box stepped portion 202c is formed in a substantially stepped shape from the end on the storage chamber side of the inner box flat surface portion 202b toward the back of the refrigerator main body 200.

  In addition, the inner box flat surface portion 202b is fixed to the entire periphery of the front opening 201a on the heat insulating material 204 side of the outer case flat surface portion 203b with an adhesive member 205 using an adhesive or an adhesive such as a double-sided tape. .

  At this time, the outer box rising portion 203c is accommodated in the inner box stepped portion 202c, and is arranged so that the end surface of the outer box rising portion 203c is not visible to the user.

  Further, the application range in the width direction of the fixing member before fixing the fixing member 28 in the present embodiment needs to consider that the inner box concave portion 202d does not contact the outer box flat surface portion 203b. It is necessary to set the range (L4 + L5) where 202b and the outer box plane portion 203b are in contact with each other to 8 mm or more and the coating thickness (T3) to 0.2 mm.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, since the inner box front portion 202a and the outer box front portion 203a are fixed to the entire periphery of the front opening 201a by the fixing member 205, the heat insulating material 204 leaks even if the heat insulating material 204 is foam-filled. There is no.

  Further, in the present embodiment, by providing the inner box stepped portion 202c, the length of the inner box flat surface portion 202b is minimized, and undulation and warpage are less likely to occur.

  Further, by providing the inner box stepped portion 202c, the secondary moment of the cross section of the inner box front portion 202a is increased and the rigidity of the inner box front portion 202a is increased. Fixing is easy.

  Further, by providing the inner box recess 202d, the secondary moment of the cross section of the inner box flat surface portion 202b is increased, and it is less likely to cause undulation and warpage, and the fixing by the fixing member 205 is facilitated.

  Moreover, since the secondary moment of the cross section of the outer case front part 203a is increased by providing the outer case rising part 203c, and the rigidity of the outer case front part 203a is increased, the fixing by the fixing member 205 is further facilitated.

  In addition, the end surface of the outer box flat surface portion 203b is accommodated in the inner box step portion 202c, and the user does not see or touch the end surface of the outer box flat surface portion 23b. 202a and outer box front part 203a are arranged.

  As described above, in the present embodiment, the flatness of the inner box plane portion 202b can be secured without using a complicated mold structure or equipment for molding the inner box 202, and Appearance design can be kept stable.

  Further, the inner box flat surface portion 202b and the outer box flat surface portion 203b are easily fixed by the fixing member 205, and the stability of the appearance design is further increased.

  In addition, since the user can be prevented from being injured at the end face of the outer box rising portion 203c, the safety of the refrigerator main body 200 can be ensured.

Furthermore, since the end surface of the outer box rising portion 203c is not visible to the user, even if a steel plate is used as the material of the outer box 203, the appearance design of the refrigerator main body 200 is prevented from being deteriorated due to the rust of the outer box rising portion 203c. it can.

  The concept of the application range and the application thickness of the fixing member 205 is the same as that of the first embodiment, and similarly, the material cost of the fixing member 205 is secured while ensuring the rigidity of the heat insulating box 201 and the safety of the refrigerator main body 200. And increase in coating cost.

  As described above, the refrigerator according to the present invention can secure the rigidity of the heat insulation box while suppressing the increase in the amount of use of the fixing member between the inner box and the outer box and the number of coating steps. Applicable to any insulation box equipped.

20, 100, 200 Refrigerator main body 21, 101, 201 Insulated box 21a, 101a, 201a Front opening 22, 102, 202 Inner box 22a, 102a, 202a Inner box front part 22b, 102b, 202b Inner box plane part 22c, 102c, 202c Inner box step part 202d Inner box recess 23, 103, 203 Outer box 23a, 103a, 203a Outer box front part 23b, 103b, 203b Outer box plane part 203c Outer box rising part 24, 104, 204 Heat insulating material 26 Refrigerated room 27 Freezer room 28, 105, 205 Adhering member

Claims (4)

The heat insulating box having a front opening is a foam filled with a heat insulating material between the outer box and the inner box, and the front opening has an outer box front part and an inner box front part, and the front of the outer box. The outer box plane portion extending substantially parallel to the opening surface of the heat insulation box, and the outer box rising extending from the end on the inner box side of the outer box plane portion toward the back side of the heat insulation box Part , an inner box step part formed in a substantially step shape from the end of the inner box plane part of the inner box front part on the storage chamber side toward the back of the refrigerator body, and a heat insulating material from the inner box plane part An inner box recess protruding to the side, the outer box rising part is accommodated in the inner box step part, and the inner box front part and the heat insulating material side of the outer box flat part are fixed by a fixing member And the refrigerator which made the application | coating range of the width direction of the adhering member before adhering the said adhering member 8 mm or more. The refrigerator according to claim 1, wherein an application thickness of the fixing member before fixing the fixing member of the refrigerator is set to 0.2 mm or more. The refrigerator according to claim 1 or 2, wherein an application range in a width direction of the fixing member before fixing the fixing member is 15 mm or less. The refrigerator according to claim 2 or 3, wherein an application thickness of the fixing member before fixing the fixing member of the refrigerator is set to 0.6 mm or less.