CN217779373U - Improved buffering packaging structure of household electric oven - Google Patents

Abstract

The utility model provides an improved cushioning packaging structure of a household electric oven, which comprises an outer paperboard box body, wherein an inner supporting paperboard structure, a left stacking compression-resistant side paperboard structure, a right stacking compression-resistant side paperboard structure, a first accessory inner box, a third accessory inner box, a left clamping paperboard structure, a right clamping paperboard structure, a scratch-proof flat clamping layer and a top corner protection structure are arranged in the outer paperboard box body; the inner support paperboard structure is embedded at the bottom of the inner cavity of the paperboard outer box body; the left stacking compression-resistant side paperboard structure and the right stacking compression-resistant side paperboard structure are arranged above the inner support paperboard structure; the two supporting parts, the left stacking compression-resistant side paper board structure, the right stacking compression-resistant side paper board structure, the left clamping and holding paper board structure and the right clamping and holding paper board structure are arranged in a surrounding mode to form an oven placing space with the shape corresponding to that of the household electric oven; has good pressure-resistant function and buffering function, and is green and environment-friendly.

Description

Improved buffering packaging structure of household electric oven

Technical Field

The utility model relates to a packing box technical field especially relates to an improvement type electric oven's of family buffering packaging structure.

Background

The packaging box is mainly convenient for transportation, loading, unloading and storage. In daily use, the paperboard packaging box can be designed into different configurations such as integral type, combined type (detachable type), integrated bottom bracket type and the like according to actual requirements, is more convenient to carry, load and unload, has light material and large bearing capacity, and can be customized according to the size and specification of an article, so the paperboard packaging box can be used for replacing a wood box for transportation, and compared with the performance of the wood box, the cushioning performance of the paperboard packaging box is 2-8 times higher, and the weight is 55-75 percent lighter. The packaging box made of the paperboard is fast in combination, time-saving and labor-saving, exquisite in process, good in sealing performance, capable of saving a large amount of wood resources, and is a novel environment-friendly packaging product internationally recognized and popularized. In the prior art, to how to adapt to different product requirements, the design of a paperboard packaging box with higher pressure resistance and buffering performance is the direction of continuous research and innovation of designers.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing an improvement type electric oven's of family buffering packaging structure has good withstand voltage function and buffer function to green.

The utility model provides a buffer packaging structure of an improved household electric oven, which comprises an outer paperboard box body, wherein an inner support paperboard structure, a left stacking compression-resistant side paperboard structure, a right stacking compression-resistant side paperboard structure, a first accessory inner box, a third accessory inner box, a left clamping and holding paperboard structure, a right clamping and holding paperboard structure, a scratch-resistant flat clamping layer and a top corner protection structure are arranged in the outer paperboard box body; the inner support paperboard structure is embedded at the bottom of the inner cavity of the paperboard outer box body; the left stacking compression-resistant side paperboard structure and the right stacking compression-resistant side paperboard structure are arranged above the inner supporting paperboard structure and are respectively attached and contacted with the inner walls of two opposite sides of the outer paperboard box; the left stacking compression-resistant side paperboard structure and the right stacking compression-resistant side paperboard structure are the same in structure; second buffer parts are formed on two opposite sides of the left stacking compression-resistant side paperboard structure and the right stacking compression-resistant side paperboard structure; a third accessory inner box containing space is formed between second buffer parts on two opposite sides of the right stacking compression-resistant side paperboard structure, and the third accessory inner boxes are correspondingly embedded in the third accessory inner box containing space; first buffer parts are formed on two opposite sides of the inner supporting paperboard structure; the two opposite sides of the middle part of the inner support paperboard structure are connected with supporting parts, and a first accessory inner box accommodating space is formed between the two opposite supporting parts; the height of the two supporting and supporting parts is higher than that of the first accessory inner box; a left clamping and holding paperboard structure and a right clamping and holding paperboard structure are arranged between the upper parts of the left stacking compression-resistant side paperboard structure and the right stacking compression-resistant side paperboard structure; the two supporting parts, the left stacking compression-resistant side paper board structure, the right stacking compression-resistant side paper board structure, the left clamping and holding paper board structure and the right clamping and holding paper board structure are arranged in an enclosing manner to form an oven placing space with a shape corresponding to that of the household electric oven; a scratch-proof flat clamping layer is arranged at the upper part between the left clamping and holding paper board structure and the right clamping and holding paper board structure; the relative four sides of the scratch-proof flat clamping layer are limited and fixed through the top corner protection structure.

Preferably, the top corner protection structure comprises two inverted L-shaped paperboard folding layers a arranged along the length direction of the inner cavity of the paperboard outer box body and two inverted L-shaped paperboard folding layers B arranged along the length and width direction of the inner cavity of the paperboard outer box body; when the anti-scratch flat clamping layer is in a sealed state, two ends of the inverted L-shaped paperboard folding layers A on two opposite sides are in contact with the inner side wall of the paperboard outer box body in a pasting mode, two ends of the inverted L-shaped paperboard folding layers B on two opposite sides are in contact with the inner side wall of the paperboard outer box body in a pasting mode, and horizontal sections of the inverted L-shaped paperboard folding layers B on two opposite sides are arranged on the upper surface of the anti-scratch flat clamping layer in a pressing mode; the horizontal sections of the inverted L-shaped paperboard folding layers A on the two opposite sides are pressed on the inverted L-shaped paperboard folding layers B on the two opposite sides.

Preferably, the inner support paperboard structure comprises a main folding surface A, four folding surfaces are formed on two opposite sides of the main folding surface A along the length direction of the main folding surface A through folding lines, and the folding surfaces on the two sides are respectively inwards folded for 90 degrees in sequence to form a first buffer part; the two opposite sides of the middle part of the main folding surface A are cut to form supporting V-shaped folding surfaces, and the supporting parts are correspondingly sleeved outside the supporting V-shaped folding surfaces.

Preferably, the supporting and supporting part consists of eleven folded surfaces which are integrally formed, and the folded surfaces on the two sides are sequentially folded in opposite directions by 90 degrees; the upper surface of the supporting part forms an inclined surface.

Preferably, the left stacking compression-resistant side paperboard structure and the right stacking compression-resistant side paperboard structure both comprise a main folding surface B, and seven folding surfaces are formed on two opposite sides of the main folding surface B through folding lines; one side of the two side folded surfaces, which is close to the main folded surface B, is sequentially folded to form a second buffer part; one side of the main folding surface B is cut with an outward folding surface, the outward folding surface forms four folding surfaces through folding lines, and the four folding surfaces are sequentially folded from outside to inside by 90 degrees to form a third buffer part; and a third accessory inner box containing space is formed between the second buffer parts on the two opposite sides of the right stacking compression-resistant side paperboard structure and the third buffer part.

As a preferred scheme, the left clamping and holding paper plate structure and the right clamping and holding paper plate structure comprise a folded surface A, a folded surface B and a folded surface C which are formed by cutting paper, and elliptical holes corresponding to the outer contour of the household electric oven are respectively cut in the middle parts of the folded surface A, the folded surface B and the folded surface C; when the folding table is in a use state, the folded surfaces A, B and C are folded by 180 degrees respectively and then are sequentially folded.

As a preferred scheme, a second accessory inner box is arranged in the oven placing space; the second accessory inner box comprises a main folding face C, a side folding face A and a side folding face B, wherein the main folding face C is integrally formed, the side folding face A is connected with one side of the main folding face C through a connecting face A, and the side folding face B is connected with one side, far away from the side folding face A, of the main folding face C through a connecting face B; the side folding surface A forms five folding surfaces through folding lines, and the five folding surfaces are sequentially folded at 90 degrees to form an inner layer sleeve box; the side folding surface B forms five folding surfaces along the length direction of the side folding surface B through folding lines, two folding surfaces are sequentially formed on one side of the side folding surface B, which is far away from the main folding surface C, and each folding surface of the side folding surface B is correspondingly folded to form an outer sleeve box with the shape corresponding to that of the inner sleeve box; when the second accessory inner box is in a use state, the second accessory inner box is arranged in an inner cavity of the household electric oven.

The beneficial effects of the utility model are that: through support cardboard structure in the external internal setting of cardboard, left pile resistance to compression side cardboard structure, right pile resistance to compression side cardboard structure, box in the first accessory, box in the third accessory, left side clamp embraces the cardboard structure, right side clamp embraces the cardboard structure, prevent the flat card layer of fish tail, top angle bead structure, closely spacing the fixing of electric oven of family in the oven places the space, can satisfy 6A test and 2200 pound clamp and embrace the requirement, withstand voltage function and buffer function are good, and green.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a schematic view of an inner support paperboard structure.

Fig. 3 is a schematic diagram of a structure of a right-stacking pressure-resistant side paperboard.

Fig. 4 is a schematic view of the supporting portion being lifted up.

Fig. 5 is a schematic view of the structure of the left holding board.

Fig. 6 is a schematic plan expanded view of the inner case of the second fitting.

Fig. 7 is a perspective view of the second fitting inner case.

The reference signs are: the corner protector comprises a top corner protection structure 10, an inverted L-shaped paperboard folding layer A11, an inverted L-shaped paperboard folding layer B12, a scratch-proof flat clamping layer 13, a third accessory inner box 15, a left clamping and holding paperboard structure 14, a second accessory inner box 16, a second buffer portion 17, a first accessory inner box 18, an inner supporting paperboard structure 21, a left stacking and compression-resistant side paperboard structure 19, a supporting portion 20, a main folding surface A22, a paperboard outer box 23, a right stacking and compression-resistant side paperboard structure 24, a folding surface A25, a folding surface B26, a folding surface C27, an elliptical hole 28, a side folding surface A29, a connecting surface A30, a main folding surface C31, a side folding surface B32, a main folding surface B33, a third buffer portion 34, an outward folding surface 35, a first buffer portion 36, a supporting V-shaped folding surface 37, a right clamping and holding paperboard structure 38, an inner layer sleeve box 39, an outer layer sleeve box 40 and a connecting surface B41.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the detailed description thereof.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 7, the present invention provides an improved cushioning packaging structure for a household electric oven, which comprises an outer cardboard box 23, wherein an inner supporting cardboard structure 21, a left stacking pressure-resistant side cardboard structure 19, a right stacking pressure-resistant side cardboard structure 24, a first fitting inner box 18, a third fitting inner box 15, a left clamping cardboard structure 14, a right clamping cardboard structure 38, a scratch-resistant snap layer 13, and a top corner protection structure 10 are disposed in the outer cardboard box 23; the inner support paperboard structure 21 is embedded at the bottom of the inner cavity of the paperboard outer box body 23; the left stacking compression-resistant side paperboard structure 19 and the right stacking compression-resistant side paperboard structure 24 are arranged above the inner supporting paperboard structure 21 and are respectively attached and contacted with the inner walls of two opposite sides of the outer paperboard box 23; the left stacking compression-resistant side paperboard structure 19 and the right stacking compression-resistant side paperboard structure 24 are identical in structure; second buffer parts 17 are formed on two opposite sides of the left stacking pressure-resistant side paper board structure 19 and the right stacking pressure-resistant side paper board structure 24; a third accessory inner box accommodating space is formed between the second buffer parts 17 on the two opposite sides of the right stacking compression-resistant side paperboard structure 24, and the third accessory inner box 15 is correspondingly embedded and arranged in the third accessory inner box accommodating space; first buffer parts 36 are formed on two opposite sides of the inner supporting paperboard structure 21; the two opposite sides of the middle part of the inner supporting paperboard structure 21 are connected with supporting parts 20, and a first accessory inner box 18 accommodating space is formed between the supporting parts 20 at the two opposite sides; the height of the two supporting supports 20 is higher than that of the first accessory inner box 18; a left clamping and holding paperboard structure 14 and a right clamping and holding paperboard structure 38 are arranged between the upper parts of the left stacking compression-resistant side paperboard structure 19 and the right stacking compression-resistant side paperboard structure 24; the two supporting supports 20, the left stacking compression-resistant side paper board structure 19, the right stacking compression-resistant side paper board structure 24, the left clamping and holding paper board structure 14 and the right clamping and holding paper board structure 38 are arranged in an enclosing manner to form an oven placing space with a shape corresponding to that of a household electric oven; a scratch-proof flat clamping layer 13 is arranged at the upper part between the left clamping and holding paper board structure 14 and the right clamping and holding paper board structure 38; the relative four sides of the scratch-proof flat clamping layer 13 are limited and fixed through the top corner protection structure 10. This embodiment is closely spacing to fix the family's electric oven in the oven places the space, can satisfy 6A test and 2200 pounds and press from both sides and embrace the requirement, and withstand voltage function and buffer function are good to green.

The top corner protection structure 10 comprises two inverted L-shaped paperboard folding layers A11 arranged along the length direction of the inner cavity of the paperboard outer box body 23 and two inverted L-shaped paperboard folding layers B12 arranged along the length and width direction of the inner cavity of the paperboard outer box body 23; when the paper box is in a sealed state, two ends of the inverted L-shaped paper board folded layers A11 on two opposite sides are in contact with the inner side wall of the paper board outer box body 23 in a pasting mode, two ends of the inverted L-shaped paper board folded layers B12 on two opposite sides are in contact with the inner side wall of the paper board outer box body 23 in a pasting mode, and the horizontal sections of the inverted L-shaped paper board folded layers B12 on two opposite sides are arranged on the upper surface of the scratch-proof flat clamping layer 13 in a pressing mode; the horizontal sections of the reverse L-shaped paperboard folding layers A11 on the two opposite sides are pressed on the reverse L-shaped paperboard folding layers B12 on the two opposite sides. The four sides of the upper part of the inner cavity of the sealed paperboard outer box body 23 are provided with good supporting acting force through the top corner protection structure 10, so that the deformation of the upper part of the paperboard outer box body 23 is avoided.

The inner support paperboard structure 21 comprises a main folding surface A22, four folding surfaces are formed on two opposite sides of the main folding surface A22 along the length direction of the main folding surface A through folding lines, and the folding surfaces on the two sides are respectively inwards sequentially folded by 90 degrees to form a first buffer part 36; the opposite two sides of the middle part of the main folding surface A22 are both cut to form supporting V-shaped folding surfaces 37, and the supporting and supporting part 20 is correspondingly sleeved outside the supporting V-shaped folding surfaces 37. The supporting and supporting part 20 consists of eleven folded surfaces which are integrally formed, and the folded surfaces at two sides are sequentially folded in opposite directions by 90 degrees; the upper surface of the supporting part 20 forms an inclined surface, so that the bottom of the household electric oven can be more stably embedded between the supporting parts 20 at the opposite sides.

The upper part of the supporting V-shaped folding surface 37 is provided with a positioning slot, and the middle position of the bottom of the supporting part 20 is correspondingly inserted into the positioning slot to realize positioning, so that the supporting part 20 is limited at a set position. In practical use, the supporting portion 20 is supported to contact with the bottom of the household electric oven, so as to provide a good shock-proof buffering acting force for the household electric oven.

The left stacking compression-resistant side paperboard structure 19 and the right stacking compression-resistant side paperboard structure 24 both comprise a main folding surface B33, and seven folding surfaces are formed on two opposite sides of the main folding surface B33 through folding lines; one side of the two side folding surfaces close to the main folding surface B33 is sequentially folded to form a second buffer part 17; one side of the main folding surface B33 is cut with an outward folding surface 35, the outward folding surface 35 forms four folding surfaces through folding lines, and the four folding surfaces are sequentially folded from outside to inside by 90 degrees to form a third buffer part 34; and a third accessory inner box containing space is formed between the second buffer part 17 and the third buffer part 34 on the two opposite sides of the right stacking compression-resistant side paperboard structure 24 in a surrounding manner.

The left paper clamping and holding plate structure 14 and the right paper clamping and holding plate structure 38 comprise a folded surface A25, a folded surface B26 and a folded surface C27 which are formed by cutting paper, and elliptical holes 28 corresponding to the outer contour of the household electric oven are respectively cut in the middle parts of the folded surface A25, the folded surface B26 and the folded surface C27; when in use, the folded surfaces A25, B26 and C27 are folded in half by 180 degrees respectively and then are sequentially folded. Through such structure setting, make left clamp embrace cardboard structure 14 and right clamp embrace cardboard structure 38 and form 3 layers of antidetonation buffer structure layer, ensure on the one hand to press from both sides the electric oven of family steadily and embrace, on the other hand, 3 layers of antidetonation buffer structure layer further promote the utility model discloses withstand voltage function and buffer function.

A second accessory inner box 16 is arranged in the oven placing space; the second fitting inner box 16 includes a main folded surface C31, a side folded surface a29 connected to the main folded surface C31 side through a connection surface a30, and a side folded surface B32 connected to the main folded surface C side away from the side folded surface a29 side through a connection surface B41; the side folding surface A29 forms five folding surfaces through folding lines, and the five folding surfaces are mutually folded by 90 degrees in sequence to form an inner layer sleeve box 39; the side folding surface B32 forms five folding surfaces along the length direction thereof by folding lines, two folding surfaces are sequentially formed on one side of the side folding surface B32 far away from the main folding surface C31, and each folding surface of the side folding surface B32 is correspondingly folded to form an outer sleeve box 40 with the shape corresponding to that of the inner sleeve box 39; when being in the user state, inlayer cover box 39 turns over to main face C31 one side of rolling over, afterwards, outer cover box 40 is turned over to inlayer cover box 39 one side and is rolled over the interior box of accessory that forms after the formation takes buffer function and the shape corresponds with the inner chamber of family electric oven, sets up box 16 in the second accessory in the inner chamber of family electric oven to ensure that the accessory of family electric oven has under the good protect function, also better utilization the utility model discloses a usage space promotes space utilization.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (7)

1. The utility model provides an improvement type electric oven's of family buffering packaging structure, includes outer box (23) of cardboard, its characterized in that: an inner supporting paperboard structure (21), a left stacking compression-resistant side paperboard structure (19), a right stacking compression-resistant side paperboard structure (24), a first accessory inner box (18), a third accessory inner box (15), a left clamping and holding paperboard structure (14), a right clamping and holding paperboard structure (38), a scratch-resistant flat clamping layer (13) and a top corner protection structure (10) are arranged in the paperboard outer box body (23); the inner support paperboard structure (21) is embedded at the bottom of the inner cavity of the paperboard outer box body (23); the left stacking pressure-resistant side paperboard structure (19) and the right stacking pressure-resistant side paperboard structure (24) are arranged above the inner supporting paperboard structure (21) and are respectively attached and contacted with the inner walls of two opposite sides of the paperboard outer box body (23); the left stacking compression-resistant side paperboard structure (19) and the right stacking compression-resistant side paperboard structure (24) are identical in structure; second buffer parts (17) are formed on two opposite sides of the left stacking compression-resistant side paperboard structure (19) and the right stacking compression-resistant side paperboard structure (24); a third accessory inner box accommodating space is formed between the second buffer parts (17) on two opposite sides of the right stacking compression-resistant side paperboard structure (24), and the third accessory inner box (15) is correspondingly embedded and arranged in the third accessory inner box accommodating space; first buffer parts (36) are formed on two opposite sides of the inner supporting paperboard structure (21); the two opposite sides of the middle part of the inner supporting paperboard structure (21) are connected with supporting support parts (20), and a first accessory inner box (18) accommodating space is formed between the supporting support parts (20) on the two opposite sides; the height of the two supporting supports (20) is higher than that of the first accessory inner box (18); a left clamping and holding paperboard structure (14) and a right clamping and holding paperboard structure (38) are arranged between the upper parts of the left stacking compression-resistant side paperboard structure (19) and the right stacking compression-resistant side paperboard structure (24); the two supporting supports (20), the left stacking compression-resistant side paper board structure (19), the right stacking compression-resistant side paper board structure (24), the left clamping and holding paper board structure (14) and the right clamping and holding paper board structure (38) are arranged in an enclosing manner to form an oven placing space with a shape corresponding to that of a household electric oven; a scratch-proof flat clamping layer (13) is arranged at the upper part between the left clamping and holding paper board structure (14) and the right clamping and holding paper board structure (38); the relative four sides of the scratch-proof flat clamping layer (13) are limited and fixed through the top corner protection structure (10).

2. The improved cushioning packaging structure of an electric household oven as claimed in claim 1, wherein: the top corner protection structure (10) comprises two inverted L-shaped paperboard folding layers A (11) arranged along the length direction of the inner cavity of the paperboard outer box body (23) and two inverted L-shaped paperboard folding layers B (12) arranged along the length and width directions of the inner cavity of the paperboard outer box body (23); when the box is in a sealed state, two ends of the inverted L-shaped folded paper board layers A (11) on two opposite sides are in contact with the inner side wall of the outer paper board box body (23) in a sticking manner, two ends of the inverted L-shaped folded paper board layers B (12) on two opposite sides are in contact with the inner side wall of the outer paper board box body (23) in a sticking manner, and the horizontal sections of the inverted L-shaped folded paper board layers B (12) on two opposite sides are arranged on the upper surface of the scratch-proof flat clamping layer (13) in a pressing manner; the horizontal sections of the inverted L-shaped folded paperboard layers A (11) on the two opposite sides are pressed on the inverted L-shaped folded paperboard layers B (12) on the two sides.

3. The improved cushioning packaging structure for household electric ovens of claim 1, wherein: the inner support paperboard structure (21) comprises a main folding surface A (22), four folding surfaces are formed on two opposite sides of the main folding surface A (22) along the length direction of the main folding surface A through folding lines, and the folding surfaces on the two sides are respectively inwards folded by 90 degrees in sequence to form a first buffer part (36); the opposite two sides in the middle of the main folding surface A (22) are respectively cut to form supporting V-shaped folding surfaces (37), and the supporting parts (20) are correspondingly sleeved outside the supporting V-shaped folding surfaces (37).

4. The improved cushioning packaging structure of an electric household oven as claimed in claim 3, wherein: the supporting and supporting part (20) consists of eleven folded surfaces which are integrally formed, and the folded surfaces on the two sides are sequentially folded in an opposite direction by 90 degrees; the upper surface of the supporting part (20) forms an inclined surface.

5. The improved cushioning packaging structure of an electric household oven as claimed in claim 1, wherein: the left stacking compression-resistant side paperboard structure (19) and the right stacking compression-resistant side paperboard structure (24) both comprise main folding surfaces B (33), and seven folding surfaces are formed on two opposite sides of each main folding surface B (33) through folding lines; one side of the two side folding surfaces close to the main folding surface B (33) is sequentially folded to form a second buffer part (17); one side of the main folding surface B (33) is cut with an outward turning folding surface (35), the outward turning folding surface (35) forms four folding surfaces through folding lines, and the four folding surfaces are sequentially folded from outside to inside by 90 degrees to form a third buffer part (34); the second buffer parts (17) on the two opposite sides of the right stacking compression-resistant side paperboard structure (24) and the third buffer parts (34) enclose a third accessory inner box containing space.

6. The improved cushioning packaging structure for household electric ovens of claim 5, characterized in that: the left paper clamping and holding plate structure (14) and the right paper clamping and holding plate structure (38) comprise a folded surface A (25), a folded surface B (26) and a folded surface C (27) which are formed by cutting paper, and elliptical holes (28) corresponding to the outer contour of the household electric oven are cut in the middles of the folded surface A (25), the folded surface B (26) and the folded surface C (27); when the folding table is in a use state, the folding surface A (25), the folding surface B (26) and the folding surface C (27) are folded by 180 degrees respectively and then are mutually overlapped in sequence.

7. The improved cushioning packaging structure for electric household ovens of any one of claims 1-6, wherein: a second accessory inner box (16) is arranged in the oven placing space; the second accessory inner box (16) comprises a main folding face C (31), a side folding face A (29) and a side folding face B (32), wherein the main folding face C (31) is integrally formed, the side folding face A (29) is connected with one side of the main folding face C (31) through a connecting face A (30), and the side folding face B (32) is connected with one side, far away from the side folding face A (29), of the main folding face C through a connecting face B (41); the side folding surface A (29) forms five folding surfaces through folding lines, and the five folding surfaces are sequentially folded at 90 degrees to form an inner sleeve box (39); the side folding face B (32) forms five folding faces through folding lines along the length direction, two folding faces are sequentially formed on one side, away from the main folding face C (31), of the side folding face B (32), and each folding face of the side folding face B (32) is correspondingly folded to form an outer sleeve box (40) with the shape corresponding to that of the inner sleeve box (39); when in use, the second accessory inner box (16) is arranged in the inner cavity of the household electric oven.

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