TWI549871B - Foldable cold box - Google Patents

Description

Folding cold box

The present invention relates to a folding cold storage box; in particular, to a folding cold storage box for improving the heat insulation effect.

Foldable cold boxes are used to place, store or transport items that require insulation or preservation. The folding cold storage box is widely used in low temperature delivery applications because it can reduce the volume without being placed, and can reduce the transportation cost or storage cost when not in use.

However, the folded portion of the existing folding cold box is easy to form a gap of the gas passage, resulting in poor heat insulation effect, and the structure of the folded portion is generally complicated, resulting in high manufacturing cost.

In view of the foregoing conventional problems, an object of the present invention is to provide a folding cold storage box, the structure of which is folded, the structure complexity can be simplified, and the cold air in the box can be prevented from leaking out in the gap of the folding space, thereby Improve insulation.

An embodiment of the present invention provides a folding cold storage box, comprising: a bottom frame having a bottom plate and extending from the bottom plate to form a pair of first connecting side walls and a pair of second connecting side walls, the bottom plate and the first and second sides Connecting between side walls Forming a receiving cavity; a pair of first sidewalls, wherein at least one first rotating shaft is formed on a bottom side of each of the first sidewalls; and a pair of second sidewalls, wherein at least a bottom side of each of the second sidewalls is formed a second rotating shaft; a plurality of pivoting members respectively having a pivoting portion and a fixing portion, wherein the pivoting portion is pivotally connected to the two ends of the first and second rotating shafts, and the fixing portion is connected to the first and second connecting portions The inner side of the side wall, thereby achieving the pivotal connection between the bottom frame and the first and second side walls; and a cover coupled to the top side of the first and second side walls to close the folding cold box.

Another embodiment of the present invention provides a folding cold storage box, comprising: a top frame having a pair of first top frame side walls, a second top frame side wall and a third top frame side wall, second and third top frames The side wall is connected between the sidewalls of the first top frame; a pair of covers pivotally connected to the top side of the top frame for closing the folding cold storage box; a bottom frame having a bottom plate and extending from the bottom plate to form a first bottom frame The side wall, the second bottom frame side wall and the third bottom frame side wall, the bottom plate, the first bottom frame side wall, the second bottom frame side wall and the third bottom frame side wall together form a receiving cavity, and the first bottom frame side wall Corresponding to the first top frame sidewall, the second bottom frame sidewall corresponds to the second top frame sidewall, the third bottom frame sidewall corresponds to the third top frame sidewall; and the pair of first sidewalls respectively have two first sidewall portions, two of which The first side wall portions are pivotally connected to each other, and at least one first rotating shaft is formed on one side of the two first side wall portions; a pair of second side walls, wherein at least one second rotating shaft is formed on a top side of each of the second side walls And a plurality of pivoting members each having a pivoting portion and a solid a pivotal portion of the pivotal member is pivotally connected to the two ends of the first rotating shaft, and the fixing portion is connected to the inner side of the first top frame side wall and the first bottom frame sidewall, thereby achieving the top frame, the first side wall and the bottom The pivoting portion of the other part of the pivoting member is pivotally connected to the two ends of the second rotating shaft, and the fixing portion is connected to the inner side of the sidewalls of the second and third top frames, thereby achieving the top frame and the second side The pivotal connection between the walls.

In the folding cold box of the embodiment of the invention, the use of the pivoting member simplifies the structural design of the fold and facilitates assembly. In addition, since the pivoting member is hidden inside the casing (to avoid exposure), the opportunity of temperature leakage can also be reduced, thereby improving the heat insulation effect.

The above and other objects, features, and advantages of the present invention will become more apparent from the description of the appended claims.

1, 2‧‧‧Folding cold box

10‧‧‧ bottom frame

11‧‧‧floor

12‧‧‧First side wall

14‧‧‧ second side wall

16‧‧‧ pivotal parts

18‧‧‧ cover

20‧‧‧ top frame

22‧‧‧ bottom frame

24‧‧‧First side wall

24A‧‧‧First side wall section

26‧‧‧First pivotal unit

28‧‧‧Second side wall

30‧‧‧ pivotal parts

32‧‧‧ cover

34‧‧‧Second pivotal unit

102‧‧‧First connecting side wall

103‧‧‧Second connection side wall

104‧‧‧ Groove

105‧‧‧ Groove (second groove)

106‧‧‧Opening

107‧‧‧Opening (second opening)

108‧‧‧Limited structure

109‧‧‧Limited structure (second limit structure)

110‧‧‧Arc surface structure

111‧‧‧Arc surface structure

112‧‧‧ step structure

113‧‧‧ step structure

114‧‧‧ step structure

114A‧‧‧protruding part

114B‧‧‧ recessed part

115‧‧‧Bumps

122‧‧‧First shaft

124‧‧‧Arc surface structure

126‧‧ ‧ step structure

128‧‧‧Extension

128A‧‧‧Bevel structure

130‧‧‧ Groove

132‧‧‧Locks

132A‧‧‧Locking Department

134‧‧‧Protruding structure

142‧‧‧second shaft

144‧‧‧Arc surface structure

146‧‧‧Arc surface structure

148‧‧‧Protruding

148A‧‧‧Bevel structure

150‧‧‧Lock groove

152‧‧‧Bumps

154‧‧‧ slit

156‧‧‧Bumps

162‧‧‧ pivotal department

164‧‧‧ Fixed Department

166‧‧‧through holes

182‧‧‧ edging

184‧‧‧ Groove

186‧‧ ‧ step structure

188‧‧‧ recess

202‧‧‧First top frame side wall

203‧‧‧Second top frame side wall

204‧‧‧ Groove

205‧‧‧ third top frame side wall

206‧‧‧Opening

208‧‧‧Bumps

210‧‧‧ Groove

212‧‧‧Rotary shaft accommodating department

213‧‧‧Rotary shaft housing part (second shaft housing part)

214‧‧‧ opening

215‧‧‧ hole opening

216‧‧‧Extension (second extension)

216A‧‧ ‧ step structure

217‧‧‧Bumps

218‧‧‧ protruding part (second protruding part)

218A‧‧‧Arc surface structure (second curved surface structure)

219‧‧‧Bumps

216‧‧‧Extension (second extension)

218A‧‧‧Arc surface structure (second curved surface structure)

220‧‧‧floor

222‧‧‧ first bottom frame side wall

223‧‧‧ second bottom frame side wall

225‧‧‧ third bottom frame side wall

226‧‧‧Rotary shaft accommodating department

228‧‧‧Opening

230‧‧‧ Extension (second extension)

232‧‧‧Protruding

232A‧‧‧Arc surface structure (second curved surface structure)

234‧‧‧ recessed structure

236‧‧‧bump

238‧‧‧ Groove

242‧‧‧First shaft

244‧‧‧Extension

244A‧‧‧Arc surface structure

246‧‧ ‧ step structure

248‧‧‧Protruding

248A‧‧‧ planar structure

250‧‧‧ pivot piece fixing part

252‧‧ ‧ step structure

252A‧‧‧ protruding part

252B‧‧‧ recessed part

262‧‧‧First pivoting piece

262A‧‧‧First pivotal

264‧‧‧Second pivoting piece

264A‧‧‧Second pivotal

282‧‧‧second shaft

284‧‧‧ protruding structure

286‧‧‧ Groove structure

320‧‧ ‧ step structure

320A‧‧‧ protruding part

320B‧‧‧ recessed part

322‧‧‧Handle groove

324‧‧‧ pivot joint fixing section

324A‧‧‧ Opening

326‧‧‧Fixed tablets

328‧‧‧Extension

330‧‧‧ Groove

342‧‧‧First pivoting piece

342A‧‧‧First pivotal

344‧‧‧Second pivoting piece

344A‧‧‧Second pivotal

346‧‧‧Rotating parts

346A‧‧‧Pivot fixing part

346B‧‧‧Rotary shaft

348‧‧‧ pivotal parts

348A‧‧‧ pivotal department

348B‧‧‧Fixed Department

348C‧‧‧through hole

C‧‧‧ Cooling film

D1~D8‧‧‧ thickness

H‧‧‧Handle groove

H1~H3, H1’~H3’‧‧‧ Height

H‧‧‧height

L1~L4‧‧‧ length

P‧‧‧Baffle

R‧‧‧容容

S‧‧‧ accommodating space

T‧‧‧ length

Fig. 1 is a view showing the state in which the folding cold box of the first embodiment of the present invention is in an unfolded state, in which the lid is picked up.

Fig. 2 is a view showing the structure of the inside of the cover in Fig. 1.

Fig. 3 is a view showing the structure of the bottom frame in Fig. 1.

4A and 4B are schematic views showing the structure of the first side wall in Fig. 1 at different viewing angles.

Fig. 5 is a view showing the structure of the pivoting member in Fig. 1.

Figure 6 is a schematic view showing the combination of the first side wall, the pivoting member and the bottom frame.

7A and 7B are schematic views showing the structure of the second side wall in Fig. 1 at different viewing angles.

Fig. 8 is a top plan view showing the arrangement of the cold storage sheet and the partition in the accommodation space of the folding cold box of Fig. 1.

Figures 9A to 9C are views showing the state of the folding cold box of Fig. 1 at different folding stages.

Fig. 10 is a view showing the cold box of the second embodiment of the present invention in an unfolded state, in which the lid is opened.

11A and 11B are views showing the structure of the cover in Fig. 10 at different viewing angles.

Fig. 12 is an exploded view showing the second pivotal unit in Fig. 10.

Figures 13A and 13B are views showing the structure of the top frame in Fig. 10 at different viewing angles.

Figures 14A and 14B are schematic views showing the structure of the bottom frame in Fig. 10 at different viewing angles.

15A and 15B are views showing the structure of the first side wall portion in Fig. 10 at different viewing angles.

Fig. 16 is an exploded view showing the first pivotal unit in Fig. 10.

17A and 17B are views showing the structure of the second side wall in Fig. 10 at different viewing angles.

Fig. 18 is a top plan view showing the arrangement of the cold storage sheets in the accommodating space of the folding cold box of Fig. 10.

19A to 19D are views showing the state of the folding cold box of Fig. 10 at different folding stages.

Figure 20 is a schematic view showing the second side wall supported by the first rotating shaft of the first side wall in a folded state.

The design of the folding cold box 1 of the first embodiment of the present invention will be described below with reference to Figs. 1 to 10 .

As shown in FIG. 1 , the folding cold storage box 1 includes a bottom frame 10 and a The first side wall 12, the pair of second side walls 14, the plurality of pivoting members 16 and a cover 18 are provided.

The bottom frame 10 has a generally rectangular body structure. A pair of first side walls 12 are disposed on opposite sides of the bottom frame 10, a pair of second side walls 14 are disposed on the other opposite sides of the bottom frame 10, and a pair of first side walls 12 and a pair of second side walls 14 are bottom sides The pivotal member 16 can be pivoted to the bottom frame 10. When the first side wall 12 and the second side wall 14 are disposed in the bottom frame 10 (ie, the unfolded state), an accommodating space S may be formed between the bottom frame 10, the pair of first side walls 12, and the pair of second side walls 14. For placing items that need to be kept warm or fresh. A handle recess (not shown) is provided on the bottom side of the bottom frame 10 to facilitate the handling of the folding cold box 1. The cover 18 has a substantially rectangular plate structure for coupling the top sides of the pair of first side walls 12 and the pair of second side walls 14 to close the accommodating space S and the folding cold box 1.

As shown in FIGS. 1 and 2, an annular bead 182 is formed on the outer periphery of the cover 18, and an annular groove 184 is formed inside the flange 182, and in addition, in a pair A top side 12 and a pair of second side walls 14 are formed with a step structure or a step structure corresponding to the flange 182 and the recess 184 (hereinafter also referred to as hereinafter). Thereby, the effect of the cover 18 sealing the accommodation space S can be improved.

As shown in FIG. 3, the bottom frame 10 has a bottom plate 11, and a pair of vertically extending first connecting side walls 102 are formed on the bottom plate 11 corresponding to the first side wall 12 (Fig. 1). A plurality of grooves 104 are formed inside the first connecting side wall 102 to communicate with the top side of the first connecting side wall 102. The groove 104 has a substantially rectangular body structure whose longitudinal direction is parallel to the length direction of the first connecting side wall 102, and the thickness D1 of the groove 104 is smaller than the thickness D2 of the first connecting side wall 102. In addition, an opening 106 is formed on each side of the bottom of the groove 104 (due to view In the angular relationship, a side opening 106 in the groove 104 can be seen in FIG. 3, and the opening 106 extends toward the bottom plate 11 (ie, downward) and forms a limiting structure (not shown). .

As shown in FIGS. 4A and 4B, one or a plurality of first rotating shafts 122 are formed on the bottom side of the first side wall 12. The axial direction of the first rotating shaft 122 is parallel to the longitudinal direction of the bottom side of the first side wall 12. The length L1 of the first rotating shaft 122 is substantially equal to the length L2 of the groove 104 (Fig. 3), and the thickness D3 of the first rotating shaft 122 is smaller than the thickness D4 of the first side wall 12.

The number of first rotating shafts 122 is equal to the number of grooves 104 (Fig. 3). In this embodiment, the number of the first rotating shaft 122 and the groove 104 is 2, but not limited thereto. In some embodiments, the number of the first rotating shaft 122 and the groove 104 may also be 1 or greater. 2.

As shown in FIG. 5 and FIG. 6, each pivoting member 16 has a pivoting portion 162 and a fixing portion 164 integrally formed. A through hole 166 is formed in the two pivoting portions 162 for pivoting the two ends of the first rotating shaft 122 of the first side wall 12. The fixing portion 164 is configured to be inserted into the opening 106 in the recess 104, and is engaged with the limiting structure 108 (the structure hidden inside the first sidewall 12 by a broken line) under the opening 106. In this embodiment, the fixing portion 164 can have a barb structure (for example, an inverted T-shaped structure, but not limited thereto), and the limiting structure 108 formed inside the first connecting sidewall 102 can also be a Corresponding barb structure, whereby the fixing portion 164 and the limiting structure 108 are tightly fitted, and the bonding strength between the pivoting member 16 and the bottom frame 10 can be improved.

With the above-mentioned structural design, the first rotating shaft 122 of the first side wall 12 can be correspondingly received in the groove 104 of the inner side of the first connecting side wall 102, and is pivotally connected to the bottom frame 10 by the pivoting member 16.

The use of the pivoting member 16 simplifies the structural design of the fold between the bottom frame 10 and the first side wall 12 and facilitates assembly. In addition, since the first rotating shaft 122 can be hidden inside the first connecting side wall 102 (to avoid being exposed), the chance of temperature leakage at the fold between the bottom frame 10 and the first side wall 12 can be reduced, thereby improving the separation. Thermal effect.

As shown in FIG. 3 and FIG. 4B, an outer convex curved surface structure 110 is formed at the intersection of the inner side and the top side of the first connecting side wall 102, along the length direction of the first connecting side wall 102, and at the first The bottom side of the side wall 12 is connected to the first rotating shaft 122 to form another corresponding concave curved surface structure 124 disposed along the length of the bottom side of the first side wall 12, such that the first side wall 12 is opposite to the bottom. Block 10 is smoothly pivoted (to avoid interference between the two).

In addition, a stepped structure 112 is formed on the periphery of the top side of the first connecting side wall 102, and another corresponding step structure 126 is formed on the periphery of the bottom side of the first side wall 12, so that the first side wall 12 can also be lifted. The airtight effect with the bottom frame 10 (the first connecting side wall 102) can prevent the first side wall 12 from being excessively turned outward relative to the bottom frame 10.

As shown in FIG. 3, a pair of vertically extending second connecting side walls 103 are formed on the bottom plate 11 of the bottom frame 10 corresponding to the second side wall 14 (Fig. 1), and the height is greater than the first connecting side wall. The height of 102. In addition, a receiving cavity R is formed between the bottom plate 11 and the first and second connecting sidewalls 102 and 103.

In addition, a plurality of grooves 105 (second grooves) are formed inside the second connecting side walls 103 to communicate with the top side of the second connecting side walls 103. The groove 105 has a substantially rectangular body structure whose longitudinal direction is parallel to the length direction of the second connecting side wall 103, and the thickness D5 of the groove 105 is smaller than the thickness of the second connecting side wall 103. D6. In addition, an opening 107 (second opening) is further formed on both sides of the bottom of the groove 105 (due to the viewing angle, one side opening 107 in the groove 105 can be seen in FIG. 3), The bottom plate 11 extends (ie, faces downward) to form a limiting structure (second limiting structure) (not shown).

As shown in FIG. 7A and FIG. 7B, a plurality of second rotating shafts 142 are formed on the bottom side of the second side wall 14. The axial direction of the second rotating shaft 142 is parallel to the longitudinal direction of the bottom side of the second side wall 14. The length L3 of the second rotating shaft 142 is substantially equal to the length L4 of the groove 105 (Fig. 3), and the thickness D7 of the second rotating shaft 142 is smaller than the thickness D8 of the second side wall 14.

The number of second rotating shafts 142 is equal to the number of grooves 105 (Fig. 3). In this embodiment, the number of the second rotating shaft 142 and the groove 105 is 2, but not limited thereto. In some embodiments, the number of the second rotating shaft 142 and the groove 105 may also be 1 or greater. 2.

Similarly, the second rotating shaft 142 of the second side wall 14 can also be correspondingly received in the recess 105 of the inner side of the second connecting side wall 103, and is pivotally connected to the bottom frame 10 by the pivoting member 16 (FIG. 1). . The through hole 166 of the pivoting portion 162 of the two pivoting members 16 (Fig. 5) can be pivotally connected to the two ends of the second rotating shaft 142, and the fixing portion 164 can be inserted into the opening 107 of the bottom of the groove 105, and The stopper structure 109 (second stopper structure) (Fig. 6) below the opening 107 forms a snap fit. In this embodiment, the limiting structure 109 formed on the inside of the second connecting sidewall 103 can also be a barb structure corresponding to the structure of the fixing portion 164, whereby the fixing portion 164 and the limiting structure 109 are closely matched, and The bonding strength between the pivot member 16 and the bottom frame 10 can be improved.

The use of the pivot member 16 simplifies the structural design of the fold between the bottom frame 10 and the second side wall 14. In addition, since the second rotating shaft 142 can be hidden on the second connecting side The inside of the wall 103 (to avoid exposure) can also reduce the chance of temperature leakage at the fold between the bottom frame 10 and the second side wall 14 to enhance the heat insulation effect.

As shown in FIG. 3 and FIG. 7B, an outer convex curved surface structure 111 is formed on the top side of the second connecting side wall 103, along the length direction of the second connecting side wall 103, and on the bottom side of the second side wall 14. A position corresponding to the second rotating shaft 142 is formed with another corresponding concave curved surface structure 144 disposed along the length of the bottom side of the second side wall 14, so that the second side wall 14 can be smoothly pivoted relative to the bottom frame 10. Turn (avoid interference between the two).

In addition, a stepped structure 113 is formed on the outer periphery of the top side of the second connecting side wall 103, and another corresponding step structure 146 is formed on the outer periphery of the bottom side of the second side wall 14, so that the second side wall 14 can also be lifted. The airtight effect with the bottom frame 10 (the second connecting side wall 103) can prevent the second side wall 14 from being excessively turned outward relative to the bottom frame 10.

When the folding cold box 1 (Fig. 1) is unfolded, the second side wall 14 is first pivoted to the state of being erected on the bottom frame 10, and then the first side wall 12 is pivoted to the bottom frame 10. State.

As shown in FIGS. 1 , 4A and 4B , an extension portion 128 is formed on each of the two sides of the first side wall 12 , and a bevel structure 128A is formed at the intersection of the top side and the outer side of the extension portion 128 , and A groove 130 (third groove) is further formed on both sides of the outer side of one side wall 12.

In addition, as shown in FIGS. 7A and 7B, protrusions 148 corresponding to the grooves 130 (FIGS. 4A, 4B) are respectively formed on both sides of the second side wall 14, and the protrusions 148 protrude from the second side wall 14 On the inner side, and on the bottom side of the protruding portion 148, another bevel structure 128A corresponding to the extending portion 128 (Fig. 4A, 4B) is further formed. Bevel structure 148A (the oblique side of beveled structure 148A can be seen in Figure 7A due to the viewing angle relationship). Thereby, the airtight effect between the first side wall 12 and the two side walls 14 can be further improved, and the first side wall 12 can be smoothly deployed (avoiding the influence of the unfolded second side wall 14).

As shown in FIG. 4A and FIG. 7A, a locking member 132 is further disposed on each side of the first side wall 12, wherein the locking member 132 has a protruding locking portion 132A. In this embodiment, the pivoting member 16 as shown in FIG. 5 can be embedded in the first sidewall 12 (formed by the annular pivoting portion 162 of the pivoting member 16 and the annular groove formed in the first sidewall 12). The locking member 132 is completed (the fixing portion 164 of the pivoting member 16 having the barb structure is used as the locking portion 132A). In some embodiments, the locking member 132 and the first side wall 12 can also be integrally formed.

In addition, a locking groove 150 is formed on each of the two sides of the second side wall 14 corresponding to the locking member 132, and the locking groove 150 has a structure corresponding to the locking portion 132A of the locking member 132. Thereby, when the first side wall 12 and the second side wall 14 are deployed, the locking portion 132A can be inserted into the locking groove 150 and engaged with the locking groove 150 to strengthen between the first side wall 12 and the second side wall 14 The bonding strength reduces the gap between the first side wall 12 and the second side wall 14 to form a gas passage, thereby improving the heat insulation effect.

As shown in FIG. 8, the plurality of cold storage sheets C and the partition plates P can be disposed in the accommodating space S formed between the bottom frame 10, the pair of first side walls 12, and the pair of second side walls 14 (first In the figure, the cold storage sheet C is used to maintain the temperature in the accommodating space S, and the partition plate P is used to isolate the cold storage sheet C from the articles placed in the accommodating space S (not shown).

Formed on the inner side of the second side wall 14 as shown in FIGS. 7A and 8 There are a plurality of bumps 152 and slits 154. Wherein, the bumps 152 on the pair of second side walls 14 are staggered so that each of the cold accumulating sheets C can be confined between the bumps 152 and staggered, which can facilitate the gas in the cold storage sheet C. Flow between. In addition, the slits 154 on the pair of second side walls 14 are oppositely disposed for the partition P to be inserted to realize the positioning of the partition P. In some embodiments, a single slit 154 may also be formed on the inner side of the second side wall 14.

In this embodiment, the positions of the partial bumps 152 and the slits 154 may also correspond to each other (in this case, the bumps 152 may be formed with slits 154 for the spacers S to be inserted). With the above structural design, the user can adjust the number of the cold storage sheets C and the position of the partition plate P as needed.

As shown in FIGS. 4A and 8 , a plurality of protrusion structures 134 are formed on the inner side of the first side wall 12 for spacing the cold storage sheet C from the first side wall 12 to reduce heat conduction therebetween. In some embodiments, a single protrusion structure 134 may also be formed on the inner side of the first side wall 12.

As shown in Figs. 3 and 8, a plurality of staggered step structures 114 (including the protruding portion 114A and the recessed portion 114B) are formed on the surface of the bottom plate 11 of the bottom frame 10. As a result, the water droplets generated by the cold storage sheet C may tend to flow into the recessed portion 114B of the stepped structure 114, so that the articles placed in the accommodating space S (Fig. 1) are not immersed in the water.

In addition, a plurality of bumps 115 are formed on the surface of the bottom plate 11 of the bottom frame 10, wherein the bumps 115 are disposed adjacent to the pair of second side walls 14 and are oppositely disposed to prevent the cold storage sheet C from falling.

In this embodiment, the cover 18, the bottom frame 10, the first side wall 12 and the second side wall 14 may be respectively made of a foamed material (for example, expanded polypropylene (Expanded) Polypropylene (EPP) is made in one piece, and the pivoting member 16 can be made of a plastic material having a relatively high hardness.

As shown in FIG. 9A to FIG. 9C, when the folding cold storage box 1 of the present embodiment is folded, the first side walls 12 are first folded inwardly to be received in the accommodating cavity R of the bottom frame 10, The two second side walls 14 are then folded inwardly and over the first side wall 12. When the second side wall 14 is folded, the outer side thereof can form a substantially horizontal plane with the top side of the second connecting side wall 103 of the bottom frame 10 (Fig. 9B).

A plurality of bumps 156 are also formed on the outer side of the second side wall 14 in a position and shape corresponding to a plurality of recesses 188 on the top side of the cover 18 (Fig. 1). After the second side wall 14 is folded, the cover 18 can be reversed (that is, the top side of the cover 10 is placed downward) on the second side wall 14, and the protrusion 156 and the concave portion 188 are engaged with each other, thus completing The foldable cold box 1 is folded and the cover 18 can be prevented from slipping during handling.

As described above, the first embodiment of the present invention provides a folding cold storage box, comprising: a bottom frame having a bottom plate and extending from the bottom plate to form a pair of first connecting side walls and a pair of second connecting side walls, the bottom plate Forming a receiving cavity together with the first and second connecting sidewalls; a pair of first sidewalls, wherein at least one first rotating shaft is disposed on a bottom side of each of the first sidewalls; and a pair of second sidewalls, each of the first The bottom side of the two side walls is provided with at least one second rotating shaft; the plurality of pivoting members respectively have a pivoting portion and a fixing portion, and the pivoting portions are used for pivotally connecting the two ends of the first and second rotating shafts The fixing portions are connected to the inner sides of the first and second connecting side walls, thereby achieving pivotal connection between the bottom plate and the first and second side walls; and a cover coupled to the first The top side of the second side wall to close the folding cold box. Wherein, the use of the pivoting member simplifies the between the bottom frame and the first and second side walls The folding structure is designed and easy to assemble. In addition, since the first and second rotating shafts are located inside the bottom frame, the chance of temperature leakage at the fold between the bottom frame and the first and second side walls can be reduced, thereby improving the heat insulation effect.

Next, the design of the folding cold box 2 of the second embodiment of the present invention will be described based on Figs. 10 to 20.

As shown in FIG. 10, the folding cold box 2 includes a top frame 20, a bottom frame 22, a pair of first side walls 24, a plurality of first pivoting units 26, a pair of second side walls 28, and a plurality of pivotal connections. A member 30, a pair of covers 32 and a plurality of second pivoting units 34.

The top frame 20 is a substantially rectangular hollow frame. The bottom frame 22 is a substantially rectangular frame corresponding to the top frame 20. A pair of first side walls 24 are disposed on opposite sides of the top frame 20 (and the bottom frame 22), and each of the first side walls 24 has two first side wall portions 24A, which are pivotally connected to each other by the first pivoting unit 26, and The top frame 20 and the bottom frame 22 can be pivotally connected by the pivoting member 30 at the same time. A pair of second side walls 28 are disposed on the other two opposite sides of the top frame 20 (and the bottom frame 22), and a top side of each of the second side walls 28 is pivotally connected to the top frame 20 by the pivoting member 30. When the first side wall 24 and the second side wall 28 are disposed between the top frame 20 and the bottom frame 22 (ie, the unfolded state), an accommodating space S is formed on the top frame 20, the bottom frame 22, and the pair of first side walls 24. And between the pair of second side walls 28, can be used to put items that need to be kept warm or fresh. A handle groove H is provided on the outer side of the top frame 20 to facilitate the handling of the folding cold box 2. The cover 32 can be pivotally connected to the top frame 20 by the second pivoting unit 34. When the two covers 32 are closed inward (as indicated by the direction of the arrow in FIG. 10), the accommodation space S and the folding cold box 2 can be closed.

Both covers 32 have the same structure. As shown in FIGS. 11A and 11B, a peripheral structure is formed on the periphery of the top side of the cover 32 with a stepped structure 320 (including one). The protruding portion 320A and a recessed portion 320B). When the two covers 32 are covered with each other, the step structure 320 can be correspondingly engaged to enhance the effect of the cover 32 sealing the accommodation space S (Fig. 10). In addition, a handle recess 322 is provided on the outer side of the cover 32 to facilitate opening of the cover 32.

A plurality of pivoting plate fixing portions 324 (groove structures) are formed at positions adjacent to the bottom side of the outer side of the cover 32, and can be used to fix the first pivoting pieces 342 of the second pivoting unit 34 (FIG. 12). . In addition, a plurality of fixing pieces 326 are disposed at positions corresponding to the pivot piece fixing portions 324 at the inner side of the cover 32, and have a plurality of screw structures corresponding to the openings 324A exposed on the pivot piece fixing portions 324 ( The first pivoting piece 342 is fixed to the pivoting piece fixing portion when the screw passes through the first pivoting piece 342 and the opening 324A at the same time and is screwed with the threaded structure. 324.

As shown in FIG. 12 , each of the second pivoting units 34 includes a first pivoting piece 342 , a second pivoting piece 344 , a rotating piece 346 , and two pivoting members 348 . The first pivoting piece 342 has a first pivoting portion 342A formed with a through hole. The second pivoting piece 344 has a second pivoting portion 344A formed with a through hole and having a shape corresponding to the first pivoting portion 342A. When a rotating shaft (not shown) passes through the first pivoting portion 342A and the second pivoting portion 344A at the same time, the first pivoting piece 342 and the second pivoting piece 344 can form a pivotal connection. The rotating member 346 has a pivot piece fixing portion 346A (recessed structure) similar in structure to the pivot piece fixing portion 324 (FIG. 11A) of the cover 32, and can be used to fix the second pivot piece 344. The method of fixing the second pivot piece 344 to the rotating piece 346 is similar to the method of fixing the first pivot piece 342 to the cover 32 (Fig. 11A, 11B), and thus the description is omitted here. A shaft portion 346B is respectively disposed on both sides of the rotating member 346.

Each pivoting member 348 has a pivoting portion 348A and a fixing portion 348B integrally formed. A through hole 348C is formed in the two pivot portions 348A for pivotally connecting the two shaft portions 346B of the rotating member 346. The fixing portion 348B is configured to be inserted into the opening 206 (FIG. 13A) formed on one of the top frames 20 on the top side of the first top frame sidewall 202, and is formed with a limiting structure (not shown) below the opening 206. Engage. As shown in FIG. 12, the fixing portion 348B may have a barb structure (for example, an inverted T-shaped structure, but not limited thereto), and is formed in the limit of the inside of the first top frame side wall 202 of the top frame 20. The structure may also be a corresponding barb structure, whereby the fixing portion 348B is tightly fitted with the limiting structure, and the bonding strength between the first pivoting unit 34 and the top frame 20 can be improved.

In this embodiment, the first pivoting piece 342, the second pivoting piece 344, and the pivoting member 348 can be made of a plastic material having a relatively high hardness, and the main body of the rotating member 346 can be made of a foamed material (for example, foamed polypropylene). (Expanded Polypropylene (EPP)).

As shown in FIG. 13A, a plurality of grooves 204 corresponding to the rotating members 346 of the first pivoting unit 34 are formed on the top side of the first top frame side wall 202 of the top frame 20, and can be used to receive the rotating member 346. And the foregoing openings 206 are respectively formed on both sides of each of the grooves 204 (a side opening 206 in the groove 204 can be seen in FIG. 13A due to the viewing angle relationship).

With the above structural design, the cover 32 can be pivotally connected to the top side of the first top frame side wall 202 of the top frame 20 by the second pivoting unit 34 (FIG. 1).

As shown in Figures 11A, 11B and 13A, an extension 328 is formed on each side of the cover 32, and a recess 330 is formed between the bottom side of the extension 328 and the bottom side of the cover 32. In addition, four corners are formed on the inner side of the top frame 20 There is a bump 208 corresponding to the groove 330, and a groove 210 is formed at a position inside the top frame 20 corresponding to the extending portion 328. Thereby, the airtight effect between the cover 32 and the top frame 20 can be further improved.

As shown in FIGS. 13A and 13B, the top frame 20 includes the pair of first top frame sidewalls 202, a second top frame sidewall 203, and a third top frame sidewall 205. The second top frame side wall 203 and the third top frame side wall 205 are connected between the pair of first top frame side walls 202 and disposed opposite to each other. The height H2 of the second top frame side wall 203 is greater than the height H3 of the third top frame side wall 205, and the pair of first top frame side walls 202 have an equal height H1 which is greater than the height H2 of the second top frame side wall 203.

As shown in FIGS. 14A and 14B, the bottom frame 22 includes a bottom plate 220, a pair of first bottom frame side walls 222, a second bottom frame side wall 223, and a third bottom frame side wall 225. A pair of first bottom frame side walls 222 extend vertically upward from the bottom plate 220 corresponding to the first side wall 24 and the first top frame side wall 202 (Fig. 10). The second bottom frame side wall 223 extends vertically upward from the bottom plate 220 corresponding to the second side wall 28 and the second top frame side wall 203 (Fig. 10). The third bottom frame side wall 225 extends vertically upward from the bottom plate 220 corresponding to the second side wall 28 and the third top frame side wall 205 (Fig. 10). In addition, a receiving cavity R is formed between the bottom plate 220, the pair of first bottom frame side walls 222, the second bottom frame side wall 223, and the third bottom frame side wall 225. The height H2' of the second bottom frame side wall 223 is smaller than the height H3' of the third bottom frame side wall 225, and the pair of first bottom frame side walls 222 have an equal height H1' which is greater than the height H3 of the third bottom frame side wall 225. '.

As shown in FIGS. 13B, 14A and 14B, a shaft receiving portion 212 is formed at the intersection of the inner side and the bottom side of the first top frame side wall 202 of the top frame 20. The shaft receiving portion 212 is a concave portion disposed along the length of the first top frame side wall 202 The curved surface structure has a thickness smaller than the thickness of the first top frame side wall 202, and an opening 214 is formed on each side of the rotating shaft receiving portion 212 (due to the viewing angle relationship, it can be seen in the rotating shaft receiving portion 212 in FIG. 13B). Opening 214 on one side. In addition, a shaft receiving portion 226 is also formed on the inner side and the top side of the first bottom frame side wall 222 of the bottom frame 22. The rotating shaft receiving portion 226 is a concave curved surface structure disposed along the longitudinal direction of the top side of the first bottom frame side wall 222, and the thickness thereof is smaller than the thickness of the first bottom frame side wall 222, and is respectively disposed on both sides of the rotating shaft receiving portion 226. An opening 228 is formed (due to the viewing angle relationship, the opening 228 on one side of the shaft receiving portion 226 can be seen in the 14A and 14B drawings). A plurality of limiting structures may be formed inside the first top frame sidewall 202 corresponding to the position of the opening 214, and a plurality of limiting positions may be formed inside the first bottom frame sidewall 222 corresponding to the position of the opening 228. Structure (not shown).

The first side wall portions 24A of the first side wall 24 have the same structure. As shown in Figs. 15A and 15B, a first rotating shaft 242 is formed on the bottom side of the first side wall portion 24A. The axial direction of the first rotating shaft 242 is parallel to the longitudinal direction of the bottom side of the first side wall portion 24A. The length of the first rotating shaft 242 is substantially equal to the length of the rotating shaft receiving portion 212 (Fig. 13B) of the first top frame side wall 202 and the length of the rotating shaft receiving portion 226 (Figs. 14A and 14B) of the first bottom frame side wall 222, and The thickness of the first rotating shaft 242 is smaller than the thickness of the first side wall portion 24A.

The first rotating shaft 242 of the first side wall portion 24A can be respectively received in the rotating shaft receiving portion 212 of the first top frame side wall 202 and the rotating shaft receiving portion 226 of the first bottom frame side wall 222, and is pivoted The connector 30 is pivotally connected to the top frame 20 and the bottom frame 22 (Fig. 10). The pivoting member 30 of the present embodiment has the same structure as the pivoting member 16 shown in FIG. 5 and the pivoting member 348 shown in FIG. 12, wherein the pivoting portion of the pivoting member 30 can be used for pivoting. One end of a rotating shaft 242, and the pivoting member 30 The fixing portion can be used for inserting the opening 214 (Fig. 13B) on the bottom side of the first top frame side wall 202 and the opening 228 (Fig. 14A and 14B) on the top side of the first bottom frame side wall 222, And engaging with a limiting structure (not shown) corresponding to the first top frame side wall 202 and the first bottom frame side wall 222 of the openings 214 and 228. In addition, the fixing portion of the pivoting member 30 and the limiting structures may also have mutually corresponding barb structures, so that the bonding strength between the pivoting member 30 and the top frame 20 and the bottom frame 22 can be improved.

The use of the pivoting member 30 simplifies the folding structure design of the first side wall 24 (the first side wall portion 24A) and the top frame 20 and the bottom frame 22, and is convenient for assembly. In addition, since the first rotating shaft 242 can be hidden inside the first top frame side wall 202 and the first bottom frame side wall 222 (to avoid being exposed), the first side wall 24 (the first side wall portion 24A) and the top frame 20 can also be reduced. A chance of temperature leakage occurs at the fold between the bottom frame 22, thereby improving the heat insulation effect.

As shown in Figs. 15A and 15B, an extension portion 244 is formed on each of both sides of the first side wall portion 24A. The extending portion 244 protrudes from the inner side of the first side wall portion 24A (Fig. 15B), and a curved surface structure 244A is formed on the bottom side of the extending portion 244. Further, a plurality of step structures 246 (Fig. 15A) are formed between the bottom side of the extending portion 244 and the bottom side of the first side wall portion 24A. A protrusion 248 is further formed on the outer side of each of the extending portions 244. The protrusion 248 extends in a direction perpendicular to the first side wall portion 24A and protrudes inside the extension portion 244. Further, a planar structure 248A is formed on the bottom side of the protruding portion 248.

As shown in FIG. 10 and FIG. 13B, an extension portion 216 (second extension portion) protruding toward the first side wall portion 24A is formed on both sides of the bottom side of the first top frame side wall 202, and the bottom side thereof is formed. There is a bottom side corresponding to the extension 244 a planar structure (second extension) of the curved surface structure 244A (Fig. 15A and 15B), and a first side wall portion 24A is formed between the bottom side of the first top frame side wall 202 and the extension portion 216. The step structure 216A of the step structure 246 (Fig. 15A). In addition, a protrusion 218 (second protrusion) is further formed between the outer side of the extension portion 216 and the second top frame side wall 203 and the third top frame side wall 205, and a protrusion corresponding to the protrusion is formed on the bottom side of the protrusion portion 218. A curved surface structure 218A (second curved surface structure) of the planar structure 248A (Fig. 15A) on the bottom side of the portion 248. Thereby, the bonding strength between the first top frame side wall 202 and the first side wall portion 24A can be strengthened, and the first side wall portion 24A can be smoothly pivoted relative to the first top frame side wall 202 (to avoid interference between the two). ).

Similarly, as shown in FIGS. 10, 14A and 14B, an extension portion 230 (second extension portion) protruding toward the first side wall portion 24A is formed on both sides of the top side of the first bottom frame side wall 222, respectively. The top side is formed with a planar structure (second extension) corresponding to the curved surface structure 244A (15A and 15B) of the bottom side of the extending portion 244, and at the top side and the extension portion 230 of the first bottom frame side wall 222 A step structure 230A corresponding to the step structure 246 (Fig. 15A) of the first side wall portion 24A is formed therebetween. In addition, a protrusion 232 (second protrusion) is further formed between the outer side of the extension portion 230 and the second bottom frame side wall 223 and the third bottom frame side wall 225, and a protrusion corresponding to the protrusion is formed on the top side of the protrusion portion 232. A curved surface structure 232A (second curved surface structure) of the planar structure 248A (Fig. 15A) on the bottom side of the portion 248. Thereby, the bonding strength between the first bottom frame side wall 222 and the first side wall portion 24A can be strengthened, and the first side wall portion 24A can be smoothly pivoted relative to the first bottom frame side wall 222 (to avoid interference between the two. ).

As shown in FIGS. 15A and 15B, at the first side wall portion 24A A plurality of pivoting plate fixing portions 250 (groove structures) are formed at positions adjacent to the top side of the outer side, and can be used for fixing the first pivoting piece 262 or the second pivoting piece 264 of the first pivoting unit 26 ( Figure 16). The method of fixing the first pivoting piece 262 or the second pivoting piece 264 to the first side wall portion 24A is similar to the method of fixing the first pivoting piece 342 to the cover 32 (Fig. 11A, 11B), so it is omitted here. Description. As shown in FIG. 16 , the first pivoting unit 26 includes a first pivoting piece 262 and a second pivoting piece 264 . The first pivoting piece 262 has a first pivoting portion 262A formed with a through hole. The second pivoting piece 264 has a second pivoting portion 264A formed with a through hole and having a shape corresponding to the first pivoting portion 262A. When a rotating shaft (not shown) passes through the first pivoting portion 262A and the second pivoting portion 264A at the same time, the first pivoting piece 262 and the second pivoting piece 264 can form a pivotal connection. In this embodiment, the first pivoting piece 262 and the second pivoting piece 264 are made of a plastic material having a relatively high hardness.

With the above structure, the two first side wall portions 24A of the first side wall 24 can be pivotally connected to each other by the first pivoting unit 26 (FIG. 10). As shown in Fig. 15B, a stepped structure 252 (including a protruding portion 252A and a recessed portion 252B) is further formed on the inner periphery of the top side of the first side wall portion 24A. When the first side wall 24 is unfolded and the two first side wall portions 24A are connected to each other (Fig. 10), the stepped structures 252 of the two first side wall portions 24A are correspondingly engaged to reduce gas formation between the two first side wall portions 24A. The gap between the passages can further enhance the insulation effect.

As shown in FIG. 13B, a shaft receiving portion 213 (second shaft receiving portion) is formed at an intersection of the inner side and the bottom side of the second top frame side wall 203 of the top frame 20, and the third top frame of the top frame 20 is formed. A shaft receiving portion 213 is also formed at the intersection of the inner side and the bottom side of the side wall 205 (the shaft receiving portion 213 of the second top frame side wall 203 can be seen in Fig. 13B due to the viewing angle relationship). The shaft receiving portion 213 is along a The concave inner surface of the second top frame side wall 203 or the third top frame side wall 205 is smaller than the thickness of the second top frame side wall 203 and the third top frame side wall 205, and is located at the shaft receiving portion 213. An opening 215 (second opening) is formed on each side of the two sides (the opening 215 is located on one side of the shaft receiving portion 213 in FIG. 13B due to the viewing angle relationship). A plurality of limiting structures (second limiting structures) (not shown) may also be formed inside the second top frame side wall 203 and the third top frame side wall 205 corresponding to the opening 215.

The two second side walls 28 have the same structure. As shown in FIGS. 17A and 17B, a second rotating shaft 282 is formed on the top side of the second side wall 28. The axial direction of the second rotating shaft 282 is parallel to the longitudinal direction of the top side of the second side wall 28. The length of the second rotating shaft 282 is substantially equal to the length of the rotating shaft receiving portion 213 (FIG. 13B) of the second top frame side wall 203 and the third top frame side wall 205, and the thickness of the second rotating shaft 282 is smaller than the thickness of the second side wall 28.

Similarly, the second rotating shaft 282 of the second side wall 28 can also be correspondingly received in the rotating shaft receiving portion 213 of the second top frame side wall 203 and the third top frame side wall 205, and is connected to the top frame by the pivoting member 30 and the top frame. 20 forms a pivotal connection (Fig. 10). The method of pivotally connecting the second side wall 28 to the top frame 20 by using the pivoting member 30 is similar to the method of pivoting the first side wall portion 24A to the top frame 20, and thus the description is omitted here.

The use of the pivoting member 30 simplifies the structural design of the fold between the second side wall 28 and the top frame 20 and facilitates assembly. In addition, since the second rotating shaft 282 can be hidden inside the second top frame side wall 203 and the third top frame side wall 205 (to avoid being exposed), the temperature at the fold between the second side wall 28 and the top frame 20 can also be reduced. The opportunity to leak, which in turn increases the insulation effect.

As shown in FIGS. 17A and 17B, on the bottom side of the second side wall 28 A protrusion structure 284 is formed along the lengthwise direction of the bottom side of the second side wall 28. In addition, as shown in FIGS. 14A and 14B, a recessed structure 234 is formed on the top side of the second bottom frame side wall 223 and the third bottom frame side wall 225, along the second bottom frame side wall 223 and the third bottom frame. The top side of the side wall 225 is disposed in the longitudinal direction and corresponds to the protrusion structure 284. Thereby, the bonding strength between the second side wall 28 and the second bottom frame side wall 223 and the third bottom frame side wall 225 can be strengthened, thereby improving the heat insulation effect.

When the folding cold box 2 is unfolded, the first side wall 24 is first deployed to a state between the top frame 20 and the bottom frame 22, and then the second side wall 28 is pivoted to the top frame 20 and the bottom frame. The state between 22.

As shown in Fig. 17A, a groove structure 286 is formed on the outer periphery (bottom side and both sides) of the outer side of the second side wall 28. In addition, as shown in FIGS. 14A and 14B, a flange 236 is formed on the outer periphery of the second bottom frame side wall 223 and the top side of the third bottom frame side wall 225, and is connected between the two protruding portions 232. When the second side wall 28 is unfolded, the groove structure 286 can be protruded from the four corners of the top frame 20 (FIG. 13B) and the protrusions 248 on both sides of the first side wall portion 24A (Fig. 15A, 15B). The four corner protrusions 232 of the bottom frame 22 and the second bottom frame side wall 223 and the top side flange 236 of the third bottom frame side wall 225 are engaged with each other. Thereby, the gap between the second side wall 28 and the top frame 20, the first side wall portion 24A and the bottom frame 22 to form a gas passage can be further reduced, thereby further improving the heat insulation effect.

As shown in FIG. 18, the plurality of cold storage sheets C may be disposed in the accommodating space S formed between the top frame 20, the pair of first side walls 24, the pair of second side walls 28, and the bottom frame 22 (10th) In the figure, it is used to maintain the temperature in the accommodation space S.

As shown in FIGS. 13A, 13B and 18, oppositely disposed bumps 217 are formed on the inner sides of the two first top frame side walls 202 of the top frame 20, and on the second top frame side. A bump 219 is formed at a substantially intermediate position on the inner side of the wall 203. In addition, as shown in FIGS. 14A and 14B, a plurality of grooves 238 are formed on the bottom plate 220 of the bottom frame 22 adjacent to the second bottom frame side wall 223, and the distance between the grooves 238 is substantially equal to the bump 219. length. Thereby, the plurality of cold storage sheets C can be restricted (positioned) between the bumps 217, the bumps 219, and the grooves 238.

In this embodiment, the cover 32, the top frame 20, the first side wall portion 24A, the second side wall 28, and the bottom frame 22 may be integrally formed by a foaming material (for example, expanded polypropylene (EPP)). The method is made in a manner that the pivoting member 30 can be independently made of a plastic material having a relatively high hardness.

As shown in FIGS. 19A to 19D, the folding cold box 2 of the present embodiment first folds the two second side walls 28 inward (and upward) when folded, and more specifically, is pivotally connected to The second side wall 28 of the third top frame side wall 205 is first folded inward to a horizontal state, and then the second side wall 28 pivotally connected to the second top frame side wall 203 is folded inward to a horizontal state, and is stacked on the pivot. Connected to the lower side of the second side wall 28 of the third top frame side wall 205. The two second side walls 28 of the embodiment have substantially the same height h, and the height h can be at least half of the length t of the first side wall 24, so that the accommodation space S of the folding cold box 2 can be made (Fig. 10) ) is effectively increased.

As shown in FIG. 20, after the two second side walls 28 are folded inwardly (and upwardly), the groove structure 286 on the outer side of the outer side of the second side wall 28 may also slightly overlap with the first rotating shaft 242 of the first side wall 24. The engagement is formed such that the second side wall 28 can be supported by the first rotating shaft 242 without being easily displaced.

After the second side wall 28 is folded, the first side wall 24 is folded inward (as indicated by the direction of the arrow in FIG. 19B) to be received in the second side wall 28, the top frame 20 and the bottom frame 22. Between the chambers R. Finally, the two covers 32 are facing the inner cover. After the combination, the folding of the folding cold box 2 is completed (Fig. 19D).

As described above, the second embodiment of the present invention provides a folding cold storage box including: a top frame having a pair of first top frame side walls, a second top frame side wall, and a third top frame side wall, the second a third top frame side wall is connected between the side walls of the first top frame; a pair of covers pivotally connected to the top side of the top frame for closing the folding cold storage box; a bottom frame having a bottom plate and the bottom plate The bottom plate extends to form a pair of the first bottom frame side wall, a second bottom frame side wall and a third bottom frame side wall, the bottom plate, the first bottom frame side walls, the second bottom frame side wall and the third bottom frame side wall Forming a receiving cavity, and the first bottom frame sidewalls correspond to the first top frame sidewalls, and the second bottom frame sidewalls correspond to the second top frame sidewalls, the third bottom frame sidewalls corresponding to The third top frame side wall; a pair of first side walls respectively having two first side wall portions, wherein the two first side wall portions are pivotally connected to each other, and at least one first side is formed on one of the two side wall portions a pair of second side walls, wherein at least a top side of each of the second side walls is formed with at least a second pivoting shaft; and a plurality of pivoting members respectively having a pivoting portion and a fixing portion, wherein a pivotal portion of the pivotal members is pivotally connected to the two ends of the first rotating shaft, and the fixing portion is connected to the The first top frame side wall and the inner side of the first bottom frame side walls, thereby achieving the pivotal connection between the top frame, the first side walls and the bottom frame, and the other part of the pivotal members The connecting portion is pivotally connected to the two ends of the second rotating shaft, and the fixing portion is connected to the inner side of the second and third top frame sidewalls, thereby achieving pivotal connection between the top frame and the second side walls. Wherein, the use of the pivoting member simplifies the folding frame structure between the top frame and the bottom frame and the first and second side walls, and is convenient for assembly. In addition, since the first and second rotating shafts are located inside the top frame and the bottom frame, the temperature of the top frame, the bottom frame, and the fold between the first and second side walls can be reduced, thereby improving the separation. heat effect.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. Those skilled in the art having the ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧ bottom frame

12‧‧‧First side wall

16‧‧‧ pivotal parts

102‧‧‧First connecting side wall

103‧‧‧Second connection side wall

104‧‧‧ Groove

105‧‧‧ Groove (second groove)

106‧‧‧Opening

107‧‧‧Opening (second opening)

108‧‧‧Limited structure

109‧‧‧Limited structure (second limit structure)

122‧‧‧First shaft

162‧‧‧ pivotal department

164‧‧‧ Fixed Department

166‧‧‧through holes

Claims (29)

A folding cold storage box includes: a bottom frame having a bottom plate and a pair of first connecting side walls and a pair of second connecting side walls extending from the bottom plate, the bottom plate and the first and second connecting side walls Forming a receiving cavity; a pair of first sidewalls, wherein at least one first rotating shaft is formed on a bottom side of each of the first sidewalls; and a pair of second sidewalls, wherein at least a bottom side of each of the second sidewalls is formed a second pivoting shaft; a plurality of pivoting members respectively having a pivoting portion and a fixing portion, the pivoting portions pivotally connecting the two ends of the first and second rotating shafts, wherein the fixing portions are connected to the first 1. The inner side of the second connecting side wall, thereby achieving the pivotal connection between the bottom frame and the first and second side walls; and a cover coupled to the top sides of the first and second side walls to close the Folding cold box. The folding cold box according to claim 1, wherein at least one groove is formed inside the first connecting side wall, communicating with a top side of the first connecting side wall, and on both sides of the groove Forming an opening, respectively, extending toward the bottom plate and forming a limiting structure inside the first connecting sidewall, wherein the first rotating shaft is correspondingly received in the groove, and the pivoting members are The fixing portions are inserted into the openings and are engaged with the limiting structures, thereby achieving pivotal connection between the bottom frame and the first side wall. The folding cold box of claim 2, wherein at least one second groove is formed inside the second connecting side wall to communicate with the second connection a second opening is formed on a side of the second side of the second recess, and a second opening is formed in the direction of the bottom and a second limiting structure is formed in the second connecting sidewall. The second rotating shaft is disposed in the second recess, and the fixing portions of the pivoting members are inserted into the second openings, and are engaged with the second limiting structures, thereby achieving the A pivotal connection between the bottom frame and the second side wall. The folding cold box of claim 2, wherein the fixing portions of the pivoting members have corresponding barbs corresponding to the limiting structures and/or the second limiting structures. structure. The folding cold box according to claim 2, wherein an outer convex curved surface structure is formed at an intersection of the inner side and the top side of the first connecting side wall, and is disposed along a length direction of the first connecting side wall. And another corresponding concave curved surface structure is formed at a position where the bottom side of the first side wall is connected to the first rotating shaft, and is disposed along a length direction of a bottom side of the first side wall. The folding cold storage box according to claim 3, wherein an outer convex arc surface structure is formed at an intersection of the inner side and the top side of the second connecting side wall, and is disposed along a length direction of the second connecting side wall. And another corresponding concave curved surface structure is formed at a position where the bottom side of the second side wall is connected to the second rotating shaft, and is disposed along a length direction of a bottom side of the second side wall. The folding cold box according to claim 1, wherein a locking member is respectively disposed on two sides of the first side wall, the locking member has a protruding locking portion, and the second side wall is A locking groove is formed on each of the two sides corresponding to the locking member, and the locking groove has a structure corresponding to the locking portion. The folding cold box according to claim 7, wherein the locking member uses a component of the same structure as the pivoting member and is embedded in the first side wall. carry out. The folding cold box according to claim 3, wherein the height of the second connecting side walls is greater than the height of the first connecting side walls, and when the folding cold box is deployed, the first The two side walls are pivoted to a state of being erected on the bottom frame, and then the first side walls are pivoted to a state of being erected on the bottom frame. The folding cold box according to claim 9, wherein an extension portion is formed on a bottom side of each of the first side walls, and a sloped structure is formed at an intersection of a top side and an outer side of the extension portion. And forming a third recess on each of the two sides of the first side wall, and forming a protrusion corresponding to the third groove on each side of the second side wall, and at the protruding portion The bottom side is further formed with another bevel structure corresponding to the bevel structure. The folding cold box of claim 1, wherein a plurality of bumps are formed on the inner side of the second side wall, and the bumps on the second side walls are staggered. The folding cold box further includes a plurality of cold storage sheets, wherein the cold storage sheets are confined between the bumps and are staggered. The folding cold storage box according to claim 11, further comprising at least one partition for isolating the cold storage sheets from the articles placed in the folding cold storage box, and further, on the inner side of the second side wall Forming at least one slit for positioning the partition, wherein the slits on the second side walls are correspondingly disposed. The folding cold box according to claim 11, wherein at least one protruding structure is formed on the inner side of the first side wall for spacing the cold storage sheets from the first side wall. The folding cold storage box according to claim 1, wherein the A plurality of staggered step structures are formed on the surface of the bottom plate. The folding cold-insulation box according to claim 9, wherein the folding cold-insulation box first folds the first side walls inwardly and collects them in the accommodating cavity. Then, the second sidewalls are folded inwardly and over the first sidewalls. The folding cold box of claim 15, wherein the second side wall is formed with a plurality of bumps on the outer side, and the top side of the cover is formed with a plurality of recesses, and the second side walls are After the folding is completed, the cover is reversely disposed on the second sidewalls, and the bumps and the recesses are engaged with each other. The folding cold box according to claim 1, wherein the cover, the bottom frame, the first side wall and the second side wall are made of a foam material, and the pivot members are made of a harder one. The plastic material is made independently. A folding cold storage box includes: a top frame having a pair of first top frame side walls, a second top frame side wall and a third top frame side wall, wherein the second and third top frame side walls are connected to the first Between the side walls of the top frame; a pair of lids pivotally connected to the top side of the top frame for closing the folding cold box; a bottom frame having a bottom plate and extending from the bottom plate to form a side wall of the first bottom frame, a second bottom frame side wall and a third bottom frame side wall, the bottom plate, the first bottom frame side wall, the second bottom frame side wall and the third bottom frame side wall together form a receiving cavity, and the The first bottom frame sidewall corresponds to the first top frame sidewalls, the second bottom frame sidewall corresponds to the second top frame sidewall, and the third bottom frame sidewall corresponds to the third top frame sidewall; a pair of first sidewalls , having two first side wall portions, wherein the two first The side wall portions are pivotally connected to each other, and at least one first rotating shaft is formed on one side of the two first side wall portions; a pair of second side walls, wherein at least one second rotating shaft is formed on a top side of each of the second side walls; And a plurality of pivoting members respectively having a pivoting portion and a fixing portion, wherein a part of the pivoting portions of the pivoting members are pivotally connected to the two ends of the first rotating shafts, and the fixing portion is connected to the first top portions a side wall of the frame and an inner side of the sidewalls of the first bottom frame, wherein a hinge receiving portion is formed at an intersection of an inner side and a bottom side of the side wall of the first top frame and an inner side and a top side of the side wall of the first bottom frame And forming an opening on each side of the rotating shaft receiving portion, and forming a plurality of limits on the first top frame side wall and the first bottom frame side wall at positions corresponding to the opening positions The structure, wherein the first rotating shafts are correspondingly received in the rotating shaft receiving portions, and the fixing portions of the pivoting members pivotally connected to the first rotating shafts are inserted into the openings, and the limiting structures are Forming a snap, thereby achieving the top frame, the first side walls and The pivotal connection between the bottom frames and the pivotal portions of the other pivotal members are pivotally connected to the two ends of the second rotating shafts, and the fixing portions are connected to the inner sides of the sidewalls of the second and third top frames, thereby A pivotal connection between the top frame and the second side walls is achieved. The folding cold box according to claim 18, wherein an intersection between an inner side and a bottom side of the side wall of the second top frame and an inner side and a bottom side of the side wall of the third top frame are respectively formed. a second shaft receiving portion, and a second opening is formed on each of the two second shaft receiving portions, and the second top frame side wall and the third top portion corresponding to the second opening positions A plurality of second limiting structures are formed on the sidewalls of the frame, wherein the second rotating shafts are correspondingly disposed on the second rotating shaft receiving portions, and the pivoting members pivotally connected to the second rotating shafts The fixing portions are inserted into the second openings, and are engaged with the second limiting structures, thereby achieving pivotal connection between the top frame and the second side walls. The folding cold box of claim 18 or 19, wherein the fixing portions of the pivoting members have corresponding barbs with the limiting structures and/or the second limiting structures. structure. The folding cold box according to claim 18, wherein an extension portion is formed on each side of the first side wall portion, and a curved surface structure is formed on a bottom side of the extension portion, and the extension portion is The outer side is further formed with a protrusion protruding from the inner side of the extension, and a planar structure is formed on the bottom side of the protrusion. The folding cold box according to claim 21, wherein a second extending portion is respectively formed on both sides of the bottom side of the side wall of the first top frame, and a bottom portion is formed on a bottom side of the second extending portion. Corresponding to a second planar structure of the curved surface structure of the extending portion, in addition, a second protruding portion is further formed between the outer side of the second extending portion and the second and third top frame sidewalls, and The bottom side of the second protrusion is formed with a second curved surface structure corresponding to the planar structure of the protrusion. The folding cold box according to claim 21, wherein a second extending portion is respectively formed on both sides of the top side of the side wall of the first bottom frame, and a top side is formed on the top side of the second extending portion. Corresponding to a second planar structure of the arcuate structure of the extending portion, in addition, a second protruding portion is further formed between the outer side of the second extending portion and the second and third bottom frame sidewalls, and The top side of the second protrusion is formed with a second curved surface structure corresponding to the planar structure of the protrusion. The folding cold box according to claim 19, wherein a protrusion structure is formed on a bottom side of the second side wall, along a length direction of a bottom side of the second side wall, and further, in the second The top side of the side wall of the third bottom frame is respectively formed with a concave structure disposed along the longitudinal direction of the top side of the side walls of the second and third bottom frames, and corresponds to the protruding structure. The folding cold storage box of claim 18, wherein a height of the second top frame side wall is greater than a height of the third top frame side wall, and the first top frame side walls have an equal height, which is larger than the The height of the sidewall of the second top frame, and the height of the sidewall of the second bottom frame is smaller than the sidewall of the third bottom frame, and the sidewalls of the first bottom frame have equal heights and are greater than the height of the sidewall of the third bottom frame. The folding cold storage box according to claim 25, wherein the folding cold storage box is unfolded until the first side wall is unfolded between the top frame and the bottom frame. Then, the second side walls are pivoted to a state of being erected between the top frame and the bottom frame. The folding cold storage box according to claim 25, wherein the folding cold storage box first folds the second side wall pivotally connected to the side wall of the third top frame to the horizontal state. And then the second sidewall pivotally connected to the sidewall of the second top frame is folded inward to a horizontal state, and is superposed on the second sidewall of the sidewall of the third top frame, and then The first side walls are folded inwardly to be received between the second side walls, the top frame and the receiving cavity. The folding cold box according to claim 27, wherein the second side walls are folded inwardly and supported by the first rotating shafts of the first side walls. The folding cold storage box according to claim 18, wherein the The cover, the top frame, the first side wall portions, the second side walls and the bottom frame are made of a foam material, and the pivot members are independently made of a plastic material having a relatively high hardness.