Frame Structure

Abstract

To provide a frame structure capable of reducing its weight while securing strength, and capable of reducing the number of components.SOLUTION: A heat insulating panel 230 has an insert frame 231 integrated with the heat insulating panel 230, and is fixed to an inner wall surface 224 of a resin frame 220 via the insert frame 231. A part of an outer wall surface 226 of the resin frame 220 has a rib 225 that projects on the side opposite to the side of the inner wall surface 224. The ribs 225 and the insert frame 231 are arranged so that an extension direction of the rib 225 projected on a surface corresponding to a bottom part 222 of the resin frame 220 of the outer wall surface 226 of the resin frame 220 and an extension direction of the insert frame 231 are inclined.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a frame structure that is fixed to a side wall of a freezer. [Background technology]

[0002] Conventionally, a frame structure for a refrigeration unit configured by combining a frame and a casing has been proposed, for example, in Patent Document 1. The frame is configured by connecting a plurality of frame members formed into a shape that follows the outer shape of the casing. Then, the casing is fitted into the frame, and the casing and the frame are integrated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5588728 Summary of the Invention [Problem to be solved by the invention]

[0004] Usually, sheet metal is used as a frame to support a refrigeration unit. Therefore, it is necessary to prepare and combine multiple sheet metals of different shapes, which increases the number of parts. In addition, sheet metal is heavy, so the entire frame structure becomes heavy. Therefore, it is desirable to make the frame lighter. However, there is a possibility that the strength will decrease as the frame becomes lighter.

[0005] In view of the above, an object of the present invention is to provide a frame structure that is lightweight while maintaining strength and that can reduce the number of parts. [Means for solving the problem]

[0006] In order to achieve the above object, claim 1 、7In the invention described in the above, the frame structure is installed on a side wall (102) of a freezer (101), and includes a main frame (210), a resin frame (220), and a heat insulating panel (230).

[0007] The main frame is fixed to the side wall of the freezer. The resin frame is fixed to the main frame, has a container shape made of fiber-reinforced plastic, and has an opening (221) facing the side wall of the freezer. The heat insulating panel is disposed on the side of the inner wall surface (224) of the resin frame.

[0008] The insulating panel has an insert frame (231) integrated with the insulating panel, and is fixed to the inner wall surface of the resin frame via the insert frame. The resin frame has a rib (225) that protrudes from a part of an outer wall surface (226) on the side opposite to the inner wall surface. In the invention described in claim 1, the resin frame is in the shape of a container having side portions (223a to 223d). The ribs are formed on the side portions of the outer wall surface of the resin frame in a planar shape extending from the opening side to the bottom (222) It has a trapezoidal shape tapered toward the side. In the invention described in claim 7, the resin frame is a container-like shape having side portions (223a to 223d). (222) The insulating panel has a truncated pyramid shape tapering toward the side. The insulating panel has a truncated pyramid shape that conforms to the inner wall surface of the resin frame.

[0009] According to this, since a resin frame is used instead of a sheet metal frame, the frame structure is lighter than when a sheet metal frame is used. Therefore, the frame structure can be made lighter. Also, since the resin frame is a resin molded product, there is no need to combine multiple parts. Therefore, the number of parts in the frame structure can be reduced. Furthermore, since the resin frame has ribs, the strength of the integrated structure of the resin frame and the insulation panel can be ensured by combining the ribs with the insert frame.

[0010] In addition, the reference symbols in parentheses for each means described in this column and in the claims indicate the correspondence with the specific means described in the embodiments described later. [Brief description of the drawings]

[0011] [Figure 1] 1 is a diagram showing a vehicle to which a frame structure according to a first embodiment is applied. [Diagram 2] 2 is an exploded perspective view of a frame structure accommodated in the cover of FIG. 1. [Diagram 3] 4 is a plan view showing a bottom portion of an outer wall surface of a resin frame in the frame structure. FIG. [Figure 4] 1 is a view of a side portion of an outer wall surface of the resin frame that is located on the upper side in the height direction. FIG. [Diagram 5] 13 is a view of a side portion of the resin frame as viewed from the height direction. FIG. [Figure 6] 1 is a view of a side portion of the resin frame as viewed from the width direction. [Figure 7] 1 is a view of a side portion of the resin frame as viewed from the width direction. [Figure 8] 13 is a plan view showing a part of the bottom when a metal plate is fixed to an outer wall surface of the resin frame. FIG. [Figure 9] 9 is a cross-sectional view taken along line IX-IX of FIG. 8. [Figure 10] 6 is a cross-sectional view taken along line XX in FIG. 5 when the inner part and the outer part are fixed to the frame structure. [Figure 11] FIG. 11 is an enlarged cross-sectional view of a main frame portion in FIG. 10. [Figure 12] 1 is a perspective view showing a portion where an inner part and an outer part are fixed to an insert frame, with the resin frame and the heat insulating panel omitted. FIG. [Figure 13] FIG. 11 is an exploded perspective view of a frame structure according to a second embodiment. [Figure 14] 14 is a perspective view of the resin frame shown in FIG. 13 attached to the heat insulating panel. FIG. [Figure 15]FIG. 11 is an exploded perspective view showing a modified example of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

[0013] (First embodiment) A first embodiment will be described below with reference to the drawings. The frame structure according to this embodiment is mounted on a vehicle 100 shown in FIG. 1. The frame structure is installed on a side wall 102 of a freezer 101 and is housed in a cover 103. The vertical direction based on the ground is defined as the height direction of the freezer 101. Furthermore, in the plane direction of the side wall 102 of the freezer 101, the direction perpendicular to the height direction is defined as the width direction.

[0014] As shown in FIGS. 2 and 3 , the frame structure 200 includes a main frame 210 , a resin frame 220 , and an insulating panel 230 .

[0015] The main frame 210 is a component fixed to the side wall 102 of the freezer 101. The main frame 210 also supports the resin frame 220 and the heat insulating panel 230. The main frame 210 is a metal plate processed into a desired shape. In this embodiment, the main frame 210 is processed into a linear shape along the width direction.

[0016] The resin frame 220 is a component fixed to the main frame 210. The resin frame 220 is a resin molded product made of fiber-reinforced plastic. Fiber-reinforced plastic includes at least fiber-reinforced plastic (FRP) in which fibers such as glass fiber and carbon fiber are compounded with resin to improve strength, and long-fiber-glass-mat-reinforced thermoplastic (GMT) in which thermoplastic resin is reinforced with a long-fiber glass mat.

[0017] The resin frame 220 is in the shape of a container having an opening 221, a bottom 222, and side portions 223a to 223d. When the frame structure 200 is installed on the side wall 102 of the freezer 101 on the vehicle front side, the bottom 222 of the resin frame 220 faces the front of the vehicle 100.

[0018] The resin frame 220 is fixed to the main frame 210 so that the opening 221 side faces the side wall 102 of the freezer 101. The side portion 223a is a portion located at the upper side in the height direction. The side portion 223b is a portion located at the lower side in the height direction. The side portion 223c is a portion located on one side in the width direction. The side portion 223d is a portion located on the other side in the width direction.

[0019] The heat insulating panel 230 is disposed on the side of the inner wall surface 224 of the resin frame 220. The inner wall surface 224 of the resin frame 220 is a surface that constitutes a space between the resin frame 220 and the side wall 102 of the freezer 101. The heat insulating panel 230 is formed of a synthetic resin material such as polystyrene foam.

[0020] Further, the heat insulating panel 230 has an insert frame 231 integrated with the heat insulating panel 230. In this embodiment, two linear insert frames 231 are provided on the heat insulating panel 230. The two insert frames 231 are arranged along the width direction and spaced apart from each other in the height direction.

[0021] The insert frame 231 is embedded in advance inside the heat insulating panel 230. A part of the insert frame 231 is exposed. As a result, the heat insulating panel 230 is fixed to the inner wall surface 224 of the resin frame 220 via the insert frame 231 with bolts or the like. The above is the overall configuration of the frame structure 200 according to this embodiment.

[0022] Next, a specific structure of the frame structure 200 will be described. As shown in Fig. 2 to Fig. 7, the resin frame 220 has a plurality of ribs 225 for ensuring the strength of the resin frame 220. Each rib 225 is a part of an outer wall surface 226 of the resin frame 220 that protrudes to the side opposite to the inner wall surface 224. The outer wall surface 226 includes the wall surface of the bottom portion 222 and each of the wall surfaces of the side portions 223a to 223d.

[0023] In this embodiment, the ribs 225 are formed on each of the bottom portion 222 and the side portions 223a to 223d of the resin frame 220. The ribs 225 formed on the side portions 223a to 223d of the resin frame 220 are arranged from the opening portion 221 side toward the bottom portion 222 side.

[0024] The ribs 225 formed on the side portions 223a, 223b of the resin frame 220 extend in the height direction up to the center of the bottom portion 222. The ribs 225 formed on the side portion 223c of the resin frame 220 are disposed within the range of the side portion 223c of the outer wall surface 226. The ribs 225 formed on the side portion 223d of the resin frame 220 extend in the width direction up to the outer edge of the bottom portion 222.

[0025] 3, the extending direction of the rib 225 and the extending direction of the insert frame 231 are projected onto a surface of the outer wall surface 226 of the resin frame 220 that corresponds to the bottom portion 222 of the resin frame 220. In this case, the rib 225 and the insert frame 231 are respectively arranged so that the extending direction of the rib 225 and the extending direction of the insert frame 231 are perpendicular to each other. That is, the rib 225 and the insert frame 231 are arranged in a lattice pattern.

[0026] 5, the extending direction of the rib 225 and the extending direction of the insert frame 231 are projected onto the surfaces of the outer wall surface 226 of the resin frame 220 that correspond to the side portions 223a, 223b of the resin frame 220. In this case as well, the rib 225 and the insert frame 231 are arranged in a lattice pattern so that the extending direction of the rib 225 and the extending direction of the insert frame 231 are perpendicular to each other.

[0027] 4, the rib 225 disposed on the bottom 222 of the resin frame 220 has a trapezoidal shape. Specifically, the outer shape of the rib 225 projected onto a plane perpendicular to the plane corresponding to the bottom 222 of the outer wall surface 226 of the resin frame 220 and parallel to the width direction has a shape that tapers away from the outer wall surface 226.

[0028] Not only the ribs 225 arranged on the bottom 222 of the resin frame 220, but also the ribs 225 arranged on the side portions 223a to 223d of the resin frame 220 are trapezoidal in shape. That is, the outer shape of the rib 225 projected onto a vertical plane perpendicular to both the surface direction of the outer wall surface 226 of the resin frame 220 and the extending direction of the rib 225 is a trapezoidal shape that tapers away from the outer wall surface 226.

[0029] This increases the section modulus of resin frame 220 in the vertical plane, thereby increasing the strength of resin frame 220. In terms of strength, the strength can be improved more than when the outer shape of rib 225 in the vertical plane is a rectangular parallelepiped. In addition, since the tip portion of rib 225 away from outer wall surface 226 is tapered, the tip portion of rib 225 can be made lighter.

[0030] 5 to 7, the planar shape of the ribs 225 arranged on the side parts 223a to 223d of the resin frame 220 is also trapezoidal. That is, the planar shape of the ribs 225 formed on the side parts 223a to 223d of the outer wall surface 226 of the resin frame 220 is a trapezoidal shape tapered from the opening part 221 side of the resin frame 220 toward the bottom part 222 side.

[0031] In this way, since the width of the ribs 225 located on the sides 223a to 223d of the resin frame 220 is tapered, the tip portions of the ribs 225 located on the sides 223a to 223d of the resin frame 220 on the side of the bottom 222 can be made lighter.

[0032] 5 to 7, the outer shape of resin frame 220 is a truncated pyramid shape tapered from the opening 221 side toward the bottom 222 side. That is, as shown in Fig. 5, a surface of outer wall surface 226 of resin frame 220 corresponding to side portion 223a has a truncated pyramid shape tapered from the opening 221 side toward the bottom 222 side. Although not shown, the same is true for a surface of outer wall surface 226 of resin frame 220 corresponding to side portion 223b.

[0033] 6, a surface of outer wall surface 226 of resin frame 220 corresponding to side portion 223c has a truncated pyramid shape tapered from the opening 221 side toward the bottom 222 side. Similarly, as shown in Fig. 7, a surface of outer wall surface 226 of resin frame 220 corresponding to side portion 223d has a truncated pyramid shape tapered from the opening 221 side toward the bottom 222 side.

[0034] According to the above-described shape, the weight of the bottom 222 side of the resin frame 220 can be reduced more than that of the opening 221 side. Accordingly, the strength of the bottom 222 side of the resin frame 220 can be reduced more than that of the opening 221 side.

[0035] As shown in FIG. 2, the heat insulating panel 230 has a truncated pyramid shape that conforms to the inner wall surface 224 of the resin frame 220. The heat insulating panel 230 is covered by the inner wall surface 224 of the resin frame 220. The resin frame 220 contains, for example, glass fiber, and is therefore capable of preventing transmission of ultraviolet rays. This allows the resin frame 220 to protect the heat insulating panel 230 from direct sunlight. In addition, there is no need to provide the heat insulating panel 230 with a coating for protecting the heat insulating panel 230 from direct sunlight. This allows for weight reduction and cost reduction in the frame structure 200 by the amount of coating.

[0036] 8 and 9, frame structure 200 includes a metal plate 300 and an elastic member 400. Metal plate 300 is a support component for fixing a component to outer wall surface 226 of resin frame 220. Metal plate 300 is disposed on the side of outer wall surface 226 of resin frame 220.

[0037] The elastic member 400 is a buffer component for preventing friction between the resin frame 220 and the metal plate 300. The elastic member 400 is, for example, a rubber sheet. The size of the elastic member 400 is, for example, the same as the size of the surface of the metal plate 300 that corresponds to the outer wall surface 226 of the resin frame 220. Of course, the size of the elastic member 400 may be larger than the surface of the metal plate 300 that corresponds to the outer wall surface 226 of the resin frame 220. Alternatively, a plurality of elastic members 400 each smaller in size than the surface of the metal plate 300 that corresponds to the outer wall surface 226 of the resin frame 220 may be used.

[0038] The elastic member 400 is sandwiched between the outer wall surface 226 of the resin frame 220 and the metal plate 300. The metal plate 300 is fixed to the insert frame 231 of the heat-insulating panel 230 with the bolts 310. As a result, the metal plate 300 is fixed to the outer wall surface 226 of the resin frame 220 via the elastic member 400.

[0039] In this way, by providing the elastic member 400, it is possible to prevent the generation of wear powder due to friction between the resin frame 220 and the metal plate 300, even if a gel coat for protecting the outer wall surface 226 of the resin frame 220 is not provided on the outer wall surface 226. In addition, it is possible to reduce the weight and cost of the frame structure 200 by the amount of the gel coat.

[0040] Components can be mounted inside and outside the frame structure 200. As shown in Fig. 10, an inner component 500 is disposed in the space 232 of the heat insulating panel 230 on the side opposite to the resin frame 220 side.

[0041] The internal part 500 is, for example, an evaporator that constitutes a part of a refrigeration device. A part of the internal part 500 is disposed in a window portion provided in the freezer 101. As a result, cold air is sent into the freezer 101 from the window portion.

[0042] An outer component 600 is disposed on the outer wall surface 226 of the plastic frame 220. The outer component 600 is supported by the plastic frame 220, for example, by being fixed to the metal plate 300. The outer component 600 is, for example, a condenser that constitutes a part of the refrigeration device.

[0043] The refrigeration device cools the inside of the freezer 101 to a desired temperature. Therefore, depending on where the freezer 101 is placed, the temperature inside the freezer 101 may be higher than the temperature outside the freezer 101. Also, Fig. 10 shows a cross section taken along line XX in Fig. 5, but the external part 600 is omitted in Fig. 5.

[0044] 11 , a portion of the main frame 210 is fixed to an opening 221 of a resin frame 220 with bolts 211. The main frame 210 is also fixed to a side wall 102 of the freezer 101 with bolts 212. The insulation panel 230 and the inner part 500 are fixed to the main frame 210 with bolts 213.

[0045] The main frame 210 is fixed to the opening 221 of the resin frame 220, the heat insulating panel 230, the inner part 500, and each surface of the side wall 102 of the freezer 101, and is therefore machined into a shape having portions corresponding to each surface. In this embodiment, the main frame 210 is bent so that the cross section perpendicular to the width direction has a rectangular ring shape. In addition, since the main frame 210 is disposed along the width direction, the inner part 500 is suspended from the main frame 210.

[0046] In this way, when the inner component 500 is placed in the space 232 of the insulation panel 230, the inner component 500 is fixed to the main frame 210, not to the plastic frame 220. Therefore, the load of the inner component 500 applied to the plastic frame 220 can be reduced.

[0047] As shown in Fig. 12, the inner part 500 is fixed to the insert frame 231 with bolts 233. Note that in Fig. 12, portions of the heat insulating panel 230 other than the insert frame 231 and the resin frame 220 are omitted.

[0048] The outer component 600 is fixed to the insert frame 231 with bolts 234 via through holes 227 provided in the resin frame 220. In other words, the outer component 600 is supported by both the resin frame 220 and the inner component 500 via the insert frame 231. The through holes 227 of the resin frame 220 are illustrated in FIGS. 2 and 3.

[0049] This allows the outer component 600 to be supported by the resin frame 220 and the inner component 500 fixed to the insert frame 231. Therefore, the load of the outer component 600 applied to the resin frame 220 can be reduced.

[0050] As described above, in this embodiment, the resin frame 220 is used as a frame for supporting the heat insulating panel 230, instead of a sheet metal frame. Therefore, the frame for supporting the heat insulating panel 230 can be made lighter than when a sheet metal frame is used. Bolts for joining multiple sheet metal frames together are also unnecessary. Therefore, the weight of the frame structure 200 can be reduced.

[0051] For example, a frame structure 200 using a resin frame 220 can be 10% to 20% lighter than one using multiple sheet metal frames. The larger the refrigeration device, the less sheet metal frames are used, so the greater the benefit of weight reduction. A lighter frame structure 200 also improves the fuel efficiency of the vehicle 100. Also, since the task of assembling multiple sheet metal frames is no longer necessary, the burden on the manufacturer is reduced.

[0052] Moreover, the resin frame 220 is a resin molded product. That is, the resin frame 220 is formed as a whole to fit a mold prepared in advance. For this reason, the resin frame 220 is not formed by combining a plurality of parts. Therefore, the number of parts of the frame for supporting the heat-insulating panel 230 can be reduced, and therefore the number of parts of the frame structure 200 can be reduced.

[0053] Furthermore, resin frame 220 has ribs 225 protruding from parts of outer wall surface 226. Therefore, by combining insert frame 231 of insulation panel 230 and ribs 225 of resin frame 220, the strength of the integrated structure of resin frame 220 and insulation panel 230 can be ensured.

[0054] As a modified example, the ribs 225 provided on the bottom 222 of the resin frame 220 may be connected along the height direction at the center of the bottom 222. In this manner, the ribs 225 are not limited to being formed intermittently on the outer wall surface 226 of the resin frame 220, but may be formed continuously.

[0055] Furthermore, the ribs 225 provided on the side parts 223c of the resin frame 220 extend to the outer edge parts of the bottom parts 222, but may also extend along the width direction to the side parts 223d. In this manner, the ribs 225 may be provided along the width direction in the bottom parts 222 of the resin frame 220.

[0056] Second embodiment In this embodiment, differences from the first embodiment will be mainly described. In this embodiment, the size of the insulating panel 230 in the width direction of the freezer 101 is larger than the size of the resin frame 220. The difference in the size of the insulating panel 230 in the width direction corresponds to the difference in the refrigeration capacity of the refrigeration device.

[0057] 13, plastic frame 220 is divided into two in the width direction of freezer 101. Plastic frame 220 is cut at a position on outer wall surface 226 where rib 225 is not arranged.

[0058] In this embodiment, the resin frame 220 is cut linearly in the height direction at the center in the width direction, dividing the resin frame 220 into one end 228 on one side in the width direction and the other end 229 on the other side in the width direction.

[0059] 14 , one end 228 of the two divided resin frames 220 is fixed to one end 235 of the insulation panel 230 in the width direction. The other end 229 of the two divided resin frames 220 is fixed to the other end 236 of the insulation panel 230.

[0060] According to the above configuration, the center portion of the heat insulating panel 230 is exposed from one end 228 and the other end 229 of the resin frame 220. An insulator 237, a screen material, or the like is disposed in the exposed portion. This makes it possible to protect the portion of the heat insulating panel 230 exposed from the resin frame 220 from direct sunlight.

[0061] The insulator 237 does not have to be provided over the entire insulation panel 230. The insulator 237 only needs to be disposed on at least the exposed portion of the insulation panel 230. Both widthwise ends of the insulator 237 are pressed against the insulation panel 230 by one end 228 and the other end 229 of the resin frame 220.

[0062] When a heat insulating panel 230 having a larger size in the width direction than the heat insulating panel 230 shown in Figures 12 and 13 is used, the portion of the heat insulating panel 230 exposed from the resin frame 220 becomes larger, as shown in Figure 15. In this case as well, by providing an insulator 237 to the exposed portion of the heat insulating panel 230, the heat insulating panel 230 can be protected from direct sunlight.

[0063] As described above, resin frame 220 can be fixed to insulating panel 230 that is larger than resin frame 220 in the width direction of freezer 101. This makes it possible to use one type of resin frame 220 for a plurality of refrigeration devices with different refrigeration capacities. In other words, it is not necessary to prepare a resin frame 220 for each size of insulating panel 230, and it is sufficient to prepare only one size of resin frame 220.

[0064] As a modified example, the resin frame 220 may be cut so as to detour around a part of the way, rather than being cut linearly along the height direction. For example, the resin frame 220 may be cut so as to detour around a part of the bottom portion 222 of the resin frame 220. In other words, it is sufficient that the resin frame 220 is cut to match the shape of the resin frame 220.

[0065] As a modified example, the plastic frame 220 may be cut into three or more parts at positions on the outer wall surface 226 where the ribs 225 are not disposed. A portion of the plastic frame 220 between one end 228 and the other end 229 is disposed apart from the one end 228 and the other end 229, and is fixed to the insulating panel 230.

[0066] (Other embodiments) The configuration of the frame structure 200 shown in each of the above embodiments is an example, and the present invention may be realized in other configurations without being limited to the above-described configurations. For example, the freezer 101 is not limited to one mounted on the vehicle 100, but may be one fixed on the ground or one that can be moved like a container.

[0067] The frame structure 200 only needs to be fixed to the side wall 102 of the freezer 101, and is not limited to the side wall 102 corresponding to the traveling direction of the vehicle 100 shown in Figure 1, but may be fixed to the side wall 102 on another surface.

[0068] The main frame 210 is not limited to being made of a single metal plate, and may be made of a plurality of metal plates. For example, a plurality of main frames 210 may be arranged at intervals along the width direction of the freezer 101.

[0069] The main frame 210 is not limited to being arranged along the width direction of the freezer 101, but may be arranged along the height direction. In this case, for example, two main frames 210 are fixed to both ends of the opening 221 of the resin frame 220 in the width direction.

[0070] The heat insulating panel 230 does not have to be in a truncated pyramid shape that conforms to the inner wall surface 224 of the resin frame 220, and may be formed in other shapes. Also, the number of insert frames 231 is not limited to two, and may be one, or may be three or more. Of course, the insert frame 231 is not limited to a linear shape, and may be in other shapes.

[0071] The extending direction of the rib 225 and the extending direction of the insert frame 231 are not limited to being perpendicular to each other, and the rib 225 and the insert frame 231 may be provided so that the extending direction of the rib 225 and the extending direction of the insert frame 231 are inclined. In other words, it can be said that the extending direction of the rib 225 is inclined with respect to the extending direction of the insert frame 231, or the extending direction of the insert frame 231 is inclined with respect to the extending direction of the rib 225. The inclination means that the rib 225 is disposed at an angle. In addition, as long as such a positional relationship is satisfied, for example, the rib 225 formed on the bottom 222 of the resin frame 220 may be disposed along the width direction of the freezer 101, and the insert frame 231 may be disposed along the height direction. In this way, the insert frame 231 is not limited to being disposed along the width direction, and may be disposed along other directions.

[0072] The extension direction of the rib 225 and the extension direction of the insert frame 231 are not limited to being perpendicular or inclined, and the rib 225 and the insert frame 231 may be arranged so that the extension direction of the rib 225 and the extension direction of the insert frame 231 are parallel.

[0073] The rib 225 may have any shape as long as the outer shape in a vertical plane is a trapezoid that tapers away from the outer wall surface 226, and for example, a step may be provided on the oblique slope of the trapezoid.

[0074] Components constituting the refrigeration device may be mounted on the flange portion of the resin frame 220 . [Explanation of symbols]

[0075] 101 Freezer 102 Side wall 210 Mainframe 220 Resin Frame 221 Opening 222 Bottom 224 Inner Wall 225 Ribs 226 Exterior wall 230 Insulation Panel 231 Insert Frame

Claims

1. A frame structure to be installed on a side wall (102) of a freezer (101), a main frame (210) fixed to a side wall of the freezer; A resin frame (220) fixed to the main frame, made of fiber-reinforced plastic, and shaped like a container, with an opening (221) facing a side wall of the freezer; A heat insulating panel (230) arranged on the side of the inner wall surface (224) of the resin frame; Including, The insulation panel has an insert frame (231) integrated with the insulation panel and is fixed to the inner wall surface of the resin frame via the insert frame, The resin frame has a rib (225) that protrudes from a part of an outer wall surface (226) on a side opposite to the inner wall surface, The resin frame is in the shape of a container having side portions (223a to 223d), A frame structure in which the planar shape of the rib in the portion formed on the side of the outer wall surface of the resin frame is a trapezoidal shape tapered from the opening side toward the bottom (222) side.

2. The resin frame is in the shape of a container having side portions (223a to 223d), the resin frame has a truncated pyramid shape tapered from the opening side toward the bottom side, The frame structure according to claim 1 , wherein the heat insulating panel has a truncated pyramid shape that conforms to an inner wall surface of the resin frame.

3. A metal plate (300) arranged on the outer wall surface side of the resin frame; An elastic member (400) sandwiched between an outer wall surface of the resin frame and the metal plate; Including, The frame structure according to claim 1 or 2, wherein the metal plate is fixed to an outer wall surface of the resin frame via the elastic member.

4. a portion of the main frame is fixed to an opening of the resin frame, An inner part (500) is disposed in a space portion (232) of the insulation panel on the opposite side to the resin frame side, 4. The frame structure according to claim 1, wherein the inner part is fixed to the main frame.

5. The inner part is fixed to the insert frame; An outer part (600) is disposed on the outer wall surface of the resin frame, The frame structure according to claim 4, wherein the outer component is fixed to the insert frame via a through hole (227) provided in the resin frame, and is supported by the resin frame and the inner component via the insert frame.

6. The resin frame is divided into a plurality of pieces in a width direction of the freezer by cutting the outer wall surface at a position where the rib is not arranged, 6. A frame structure as described in any one of claims 1 to 5, wherein, in the width direction of the freezer, one end (228) of the multiple resin frames is fixed to one end (235) of the insulation panel, and the other end (229) of the multiple resin frames is fixed to the other end (236) of the insulation panel.

7. A frame structure to be installed on a side wall (102) of a freezer (101), a main frame (210) fixed to a side wall of the freezer; A resin frame (220) fixed to the main frame, made of fiber-reinforced plastic, and shaped like a container, with an opening (221) facing a side wall of the freezer; A heat insulating panel (230) arranged on the side of the inner wall surface (224) of the resin frame; Including, The insulation panel has an insert frame (231) integrated with the insulation panel and is fixed to the inner wall surface of the resin frame via the insert frame, The resin frame has a rib (225) that protrudes from a part of an outer wall surface (226) on a side opposite to the inner wall surface, The resin frame is in the shape of a container having side portions (223a to 223d), The resin frame has a truncated pyramid shape tapered from the opening side toward the bottom side (222), A frame structure, wherein the insulation panel has a truncated pyramid shape that conforms to the inner wall surface of the resin frame.

8. A metal plate (300) arranged on the outer wall surface side of the resin frame; An elastic member (400) sandwiched between an outer wall surface of the resin frame and the metal plate; Including, The frame structure according to claim 7 , wherein the metal plate is fixed to an outer wall surface of the resin frame via the elastic member.

9. a portion of the main frame is fixed to an opening of the resin frame, An inner part (500) is disposed in a space portion (232) of the insulation panel on the opposite side to the resin frame side, The frame structure according to claim 7 or 8, wherein the inner part is fixed to the main frame.

10. The inner part is fixed to the insert frame; An outer part (600) is disposed on the outer wall surface of the resin frame, The frame structure according to claim 9, wherein the outer component is fixed to the insert frame via a through hole (227) provided in the resin frame and is supported by the resin frame and the inner component via the insert frame.

11. The resin frame is divided into a plurality of pieces in a width direction of the freezer by cutting the outer wall surface at a position where the rib is not arranged, 11. A frame structure as described in any one of claims 7 to 10, wherein, in the width direction of the freezer, one end (228) of the multiple resin frames is fixed to one end (235) of the insulation panel, and the other end (229) of the multiple resin frames is fixed to the other end (236) of the insulation panel.

12. A frame structure as described in any one of claims 1 to 11, wherein the rib and the insert frame are each arranged so that the extension direction of the rib projected onto a surface of the outer wall surface of the resin frame corresponding to the bottom (222) of the resin frame and the extension direction of the insert frame are inclined.

13. 13. A frame structure according to claim 1, wherein the rib has an outline projected onto a vertical plane perpendicular to both the surface direction of the outer wall surface of the resin frame and the extension direction of the rib projected onto the outer wall surface of the resin frame, the outline being a trapezoid that tapers away from the outer wall surface.

Images