CN220115269U - Cigarette case - Google Patents

Abstract

The utility model relates to the technical field of cigarette packaging, in particular to a cigarette case, which comprises a case body with a trapezoid longitudinal section, wherein the case body comprises an inner periphery, an upper cover and a lower cover arranged at the lower end of the upper cover, the upper cover is rotationally connected with the lower cover, the inner periphery is arranged in the lower cover, the outer side wall of the inner periphery is connected with the inner side wall of the lower cover, the longitudinal section of the inner periphery is in a hollow trapezoid shape, the height of the inner periphery is larger than that of the lower cover, a clamping block is arranged on the inner periphery and is clamped with the upper cover, and a notch is formed in the side wall of the inner periphery. The cigarette case has simple structure and convenient use, and is convenient for taking and putting cigarettes. The longitudinal sections of the box body and the inner periphery are trapezoidal, namely, the side wall of the lower cover inclines along the direction of cigarettes, so that the cigarettes are protected. Compared with the prior art, in the process of taking and putting cigarettes, even if the cigarette case is slightly inclined, cigarettes in the cigarette case are not easy to fall off, and the waste of resources is avoided.

Description

Cigarette case

Technical Field

The utility model relates to the technical field of cigarette packaging, in particular to a cigarette case.

Background

As shown in fig. 1, chinese patent with grant notice CN206885838U and application date 2018, 1 and 16 discloses a fully open cigarette case structure, which comprises a case body and an inner periphery 2 disposed in the case body, wherein the inner periphery 2 is attached to the inner side wall or the outer side wall of a lower cover 3 of the case body; wherein a notch 0 is arranged on the inner periphery 2. The box body comprises a box surface unfolding paper 10, an inner clamping lower cover unfolding paper 30 and a lower cover enclosing strip paper 20, wherein the inner clamping lower cover unfolding paper 30 comprises a lower cover middle part 31, a lower cover side edge 32 is bent into a vertical state relative to the lower cover middle part 31, the lower cover enclosing strip paper 20 surrounds the inner side wall of the lower cover 3, namely, an inner periphery 2 is perpendicular to the lower cover middle part 31, in the cigarette box opening process, if a cigarette box is slightly inclined, cigarettes can be inclined and poured out, so that resources are wasted, and the practicability is poor.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide the cigarette case which is convenient to use and strong in practicability.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a cigarette case, includes that the longitudinal section is trapezoidal box body, the box body includes interior, upper cover and locates the lower cover of the lower extreme of upper cover, the upper cover rotates with the lower cover to be connected, interior encloses the setting in the lower cover, interior outer lateral wall of enclosing is connected with the inside wall of lower cover, interior longitudinal section of enclosing is hollow trapezoid, interior highly is greater than the height of lower cover, interior encloses and is equipped with the fixture block, fixture block and upper cover joint, the breach has been seted up to interior lateral wall of enclosing.

Further, the upper cover comprises an upper cover middle part, an upper cover front plate, an upper cover rear plate and two upper cover side plates, wherein the upper cover front plate, the upper cover rear plate and the upper cover side plates are all connected with the upper cover middle part, the upper cover front plate, the upper cover rear plate and the upper cover side plates are all inclined outwards at the upper cover middle part, and two ends of the upper cover side plates are respectively connected with two ends of the upper cover front plate and the upper cover rear plate.

Further, the lower cover comprises a lower cover middle part, a lower cover front plate, a lower cover rear plate and two lower cover side plates, wherein the lower cover front plate, the lower cover rear plate and the lower cover side plates are connected with the lower cover middle part, the lower cover front plate, the lower cover rear plate and the lower cover side plates incline inwards in the lower cover middle part, and two ends of the lower cover side plates are respectively connected with two ends of the lower cover front plate and the lower cover rear plate.

Further, the inner periphery comprises an inner periphery first side part, an inner periphery front part, an inner periphery second side part and an inner periphery rear part, wherein two ends of the inner periphery front part are respectively connected with the front end of the inner periphery first side part and the front end of the inner periphery second side part, and two ends of the inner periphery rear part are respectively connected with the rear end of the inner periphery first side part and the rear end of the inner periphery second side part.

Further, the outer wall of the inner periphery front portion is connected with the inner wall of the lower cover front plate, the outer wall of the inner periphery rear portion is connected with the inner wall of the lower cover rear plate, and the outer walls of the inner periphery first side portion and the inner periphery second side portion are respectively connected with the inner wall of the corresponding lower cover side plate.

Further, the number of the clamping blocks is two, and one end of the front part of the inner periphery of the clamping block extends along the direction of the corresponding upper cover side plate until the clamping block is abutted against the inner wall of the corresponding upper cover side plate.

Further, the notch is opened at the first side part of the inner periphery or the second side part of the inner periphery.

Further, the cigarette case further comprises integrally formed wrapping paper, the wrapping paper wraps the outer surfaces of the upper cover and the lower cover, the wrapping paper comprises an outer front panel, a top panel, a rear panel, a bottom panel and an inner front panel, the transverse two ends of the outer front panel or the inner front panel are connected with first bonding sheets, the transverse two ends of the top panel are connected with second bonding sheets, the transverse two ends of the rear panel are connected with third bonding sheets, and the transverse two ends of the bottom panel are connected with fourth bonding sheets.

Further, the inner wall of the outer front panel is connected with the outer wall of the inner front panel, the outer walls of the upper cover front panel and the lower cover front panel are connected with the inner wall of the inner front panel, the outer walls of the upper cover rear panel and the lower cover rear panel are connected with the inner wall of the rear panel, the outer walls of the upper cover middle part and the lower cover middle part are respectively connected with the inner walls of the top panel and the bottom panel, the outer walls of the upper cover side plate and the lower cover side plate are respectively connected with the inner walls of the first bonding sheet, the third bonding sheet and the fourth bonding sheet, and the outer walls of the first bonding sheet, the third bonding sheet and the fourth bonding sheet are respectively connected with the inner wall of the second bonding sheet;

the outer front panel, the first adhesive sheet, the second adhesive sheet, the third adhesive sheet, the fourth adhesive sheet and the inner front panel are cut with openings along the upper edge of the lower cover.

Further, the back panel includes back panel and lower back panel, the inner wall of going up the back panel is connected with the outer wall of upper cover back panel, the inner wall of lower back panel is connected with the outer wall of lower cover back panel, go up back panel and lower back panel rotation and be connected.

The utility model has the beneficial effects that: the cigarette case provided by the utility model has the advantages of simple structure, convenience in use and convenience in taking and putting cigarettes. The cross sections of the box body and the inner periphery are trapezoidal, namely, the side wall of the lower cover inclines along the direction of cigarettes, so that the cigarettes are protected. Compared with the prior art, in the process of taking and putting cigarettes, even if the cigarette case is slightly inclined, cigarettes in the cigarette case are not easy to fall off, and the waste of resources is avoided.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a front view of the present utility model in a closed position;

FIG. 3 is a top view of the present utility model in a closed position;

FIG. 4 is a schematic perspective view of the present utility model in an open state;

FIG. 5 is a schematic view showing an exploded structure of the upper cover according to the present utility model;

FIG. 6 is a schematic view of an exploded structure of the lower cover according to the present utility model;

FIG. 7 is a schematic view of an exploded structure of the inner periphery of the present utility model;

fig. 8 is a schematic structural view of the wrapping paper of the present utility model.

The reference numerals include:

an upper cover 1; an upper cover middle part 11; an upper cover front plate 12 and an upper cover rear plate 13; an upper cover side plate 14;

a lower cover 2; a lower cover middle part 21; a lower cover front plate 22; a lower cover rear plate 23; a lower cover side plate 24;

an inner periphery 3; a clamp block 31; a notch 32; an inner peripheral first side portion 33; an inner peripheral front 34; an inner peripheral second side portion 35; an inner peripheral rear portion 36;

a wrapping paper 4; an outer front panel 41; a top panel 42; a rear panel 43; an upper rear panel 431; a lower rear panel 432; a bottom panel 44; an inner front panel 45; a first adhesive sheet 46; a second adhesive sheet 47; a third adhesive sheet 48; fourth adhesive sheet 49.

Detailed Description

The present utility model will be further described with reference to examples and drawings, which are not intended to be limiting, for the understanding of those skilled in the art.

As shown in fig. 2-8, the cigarette case comprises a case body with a trapezoid longitudinal section, the case body comprises an inner periphery 3, an upper cover 1 and a lower cover 2 arranged at the lower end of the upper cover 1, namely, the longitudinal sections of the upper cover 1 and the lower cover 2 are trapezoid, the upper cover 1 is rotationally connected with the lower cover 2, the upper cover 1 is provided with a cavity with a downward opening, the lower cover 2 is provided with a cavity with an upward opening, the cavity of the upper cover 1 is communicated with the cavity of the lower cover 2, and the upper cover 1 and the lower cover 2 are enclosed to form an inner cavity for the inner periphery 3 to be arranged;

the inner periphery 3 is arranged in the lower cover 2, the outer side wall 3 of the inner periphery 3 is connected with the inner side wall of the lower cover 2, the inner periphery 3 surrounds the inner side wall of the lower cover 2 in a circle, the longitudinal section of the inner periphery 3 is hollow trapezoid, the inner periphery 3 is provided with a containing cavity for storing cigarettes, the containing cavity is communicated with the cavity of the upper cover 1, the height of the inner periphery 3 is greater than that of the lower cover 2, cigarettes are convenient to store, namely the inner periphery 3 extends upwards from the bottom wall of the lower cover 2 along the inner side wall of the lower cover 2 until being abutted to the top wall of the upper cover 1, and the cigarettes are arranged in the inner periphery 3. The inner periphery 3 is provided with a clamping block 31, the clamping block 31 is clamped with the upper cover 1, so that the upper cover 1 and the lower cover 2 are not easy to open, the storage time of cigarettes is prolonged, the side wall of the inner periphery 3 is provided with a notch 32, and the notch 32 is used for taking the cigarettes.

The cigarette case provided by the utility model has the advantages of simple structure, convenience in use and convenience in taking and putting cigarettes. When a user opens the cigarette case, the notch 32 exposes the end part of the cigarette, the cigarette can be conveniently and easily taken out of the cigarette case through the exposed end part, and meanwhile, the longitudinal sections of the case body and the inner periphery 3 are trapezoidal, namely, the side wall of the lower cover 2 inclines along the direction of the cigarette, so that the cigarette is protected, and the cigarette in the cigarette case is not easy to drop. Compared with the prior art, in the process of taking and putting cigarettes, even if the cigarette case is slightly inclined, cigarettes in the cigarette case are not easy to fall off, and the waste of resources is avoided.

In this embodiment, the inner periphery 3, the upper cover 1 and the lower cover 2 are made of cardboard, so that the structure is stable.

Further, the upper cover 1 includes an upper cover middle part 11, and an upper cover front plate 12, an upper cover rear plate 13 and two upper cover side plates 14 which are all connected with the upper cover middle part 11, wherein one ends of the upper cover front plate 12, the upper cover rear plate 13 and the upper cover side plates 14 far away from the upper cover middle part 11 are all inclined outwards from the upper cover middle part 11, so that included angles formed by the upper cover front plate 12, the upper cover rear plate 13 and the upper cover side plates 14 and the upper cover middle part 11 are all obtuse angles; two ends of the upper cover side plates 14 are connected to two ends of the upper cover front plate 12 and the upper cover rear plate 13, respectively. The upper cover middle part 11, the upper cover front plate 12, the upper cover rear plate 13 and the upper cover side plate 14 enclose an upper cover cavity with a downward opening.

The lower cover 2 comprises a lower cover middle part 21, a lower cover front plate 22, a lower cover rear plate 23 and two lower cover side plates 24 which are connected with the lower cover middle part 21, wherein one ends of the lower cover front plate 22, the lower cover rear plate 23 and the lower cover side plates 24 far away from the lower cover middle part 21 incline inwards relative to the lower cover middle part 21, so that included angles formed by the lower cover front plate 22, the lower cover rear plate 23 and the lower cover side plates 24 and the lower cover middle part 21 are acute angles; two ends of the lower cover side plates 24 are connected to two ends of the lower cover front plate 22 and the lower cover rear plate 23, respectively. The lower cover intermediate portion 21, the lower cover front plate 22, the lower cover rear plate 23, and the lower cover side plate 24 enclose a lower cover cavity with an opening facing upward. The upper cover cavity is communicated with the lower cover cavity.

In this embodiment, as shown in fig. 5-6, the lower cover middle part 21 and the upper cover middle part 11 have rectangular structures, which are suitable for placing cigarettes and save space. The upper cover front plate 12, the upper cover rear plate 13, the upper cover side plate 14, the lower cover front plate 22, the lower cover rear plate 23 and the lower cover side plate 24 are each trapezoidal. The upper cover middle part 11, the upper cover front plate 12, the upper cover rear plate 13 and the upper cover side plate 14 are integrated, the connection parts of the upper cover front plate 12, the upper cover rear plate 13 and the upper cover side plate 14 and the periphery side of the upper cover middle part 11 are respectively provided with indentation lines, the upper cover front plate 12, the upper cover rear plate 13 and the upper cover side plate 14 are respectively folded inwards towards the upper cover middle part 11 along the indentation lines, and the included angles formed by the upper cover front plate 12, the upper cover rear plate 13 and the upper cover side plate 14 and the upper cover middle part 11 are all obtuse angles; accordingly, the lower cover middle part 21, the lower cover front plate 22, the lower cover rear plate 23 and the lower cover side plate 24 are integrated, the connection parts of the lower cover front plate 22, the lower cover rear plate 23 and the lower cover side plate 24 and the periphery side of the lower cover middle part 21 are respectively provided with indentation lines, the lower cover front plate 22, the lower cover rear plate 23 and the lower cover side plate 24 are folded inwards towards the lower cover middle part 21 along the indentation lines, and the included angles formed by the lower cover front plate 22, the lower cover rear plate 23 and the lower cover side plate 24 and the lower cover middle part 21 are respectively acute angles.

Further, the inner periphery 3 is divided into an inner periphery first side portion 33, an inner periphery front portion 34, an inner periphery second side portion 35 and an inner periphery rear portion 36 by crease lines, both ends of the inner periphery front portion 34 are respectively connected with the front end of the inner periphery first side portion 33 and the front end of the inner periphery second side portion 35, and both ends of the inner periphery rear portion 36 are respectively connected with the rear end of the inner periphery first side portion 33 and the rear end of the inner periphery second side portion 35. The outer wall of the inner periphery front 34 is connected with the inner wall of the lower cover front plate 22, the outer wall of the inner periphery rear 36 is connected with the inner wall of the lower cover rear plate 23, and the outer walls of the inner periphery first side 33 and the inner periphery second side 35 are respectively connected with the inner walls of the corresponding lower cover side plates 24. The height of the inner peripheral front portion 34 is higher than the height of the lower lid front panel 22, the height of the inner peripheral rear portion 36 is higher than the height of the lower lid rear panel 23, and the heights of the inner peripheral first side portion 33 and the inner peripheral second side portion 35 are both higher than the height of the lower lid side panel 24.

In this embodiment, the lower ends of the inner first side 33, the inner front 34, the inner second side 35 and the inner rear 36 are connected to the top wall of the lower cover middle 21, and the inner first side 33, the inner front 34, the inner second side 35, the inner rear 36 and the lower cover middle 21 enclose an upwardly open accommodating cavity for defining the cigarette position.

Further, the notch 32 is opened at the inner first side 33 or the inner second side 35. In the present embodiment, the notch 32 is opened at the inner first side 33. The shape of the notch 32 is rectangular, the area is large, and the end part of the cigarette is exposed through the notch 32, so that the cigarette can be taken conveniently.

Further, the number of the clamping blocks 31 is two, and the clamping blocks 31 extend from one end of the inner peripheral front part 34 along the direction of the corresponding upper cover side plate 14 until abutting against the inner wall of the corresponding upper cover side plate 14.

In this embodiment, two clamping blocks 31 are respectively formed by stamping the ends of the inner first side portion 33 and the inner second side portion 35, one end of each clamping block 31 is connected to the end of the inner front portion 34, the other end of each clamping block 31 is disconnected from the inner first side portion 33 or the inner second side portion 35, and an indentation line is arranged between each inner first side portion 33 and each inner second side portion 35 and the inner front portion 34, so that when each inner first side portion 33 or each inner second side portion 35 is folded inwards towards the inner front portion 34 along the indentation line, the clamping blocks 31 and the inner front portion 34 are located on the same plane, and the production is convenient.

Further, the cigarette case further comprises integrally formed packaging paper 4, printing is convenient, production is convenient, the packaging paper 4 is made of flexible packaging materials, the packaging paper 4 is used for wrapping the outer surfaces of the upper cover 1 and the lower cover 2, and the upper cover 1 and the lower cover 2 are connected together through the packaging paper 4. The wrapping paper 4 includes an outer front panel 41, a top panel 42, a rear panel 43, a bottom panel 44, and an inner front panel 45, the outer front panel 41 or the inner front panel 45 is connected at both lateral ends thereof with a first adhesive sheet 46, the top panel 42 is connected at both lateral ends thereof with a second adhesive sheet 47, the rear panel 43 is connected at both lateral ends thereof with a third adhesive sheet 48, and the bottom panel 44 is connected at both lateral ends thereof with a fourth adhesive sheet 49.

Further, the rear panel 43 includes an upper rear panel 431 and a lower rear panel 432, the inner wall of the upper rear panel 431 is connected to the outer wall of the upper cover rear panel 13, the inner wall of the lower rear panel 432 is connected to the outer wall of the lower cover rear panel 23, and the upper rear panel 431 and the lower rear panel 432 are rotatably connected. Namely, the upper rear panel 431 and the lower rear panel 432 are rotatably connected to drive the upper cover rear plate 13 to be rotatably connected to the lower cover rear plate 23.

In the present embodiment, the inner wall of the outer front panel 41 is bonded to the outer wall of the inner front panel 45, the outer walls of the upper cover front panel 12 and the lower cover front panel 22 are bonded to the inner wall of the inner front panel 45, the outer walls of the upper cover rear panel 13 and the lower cover rear panel 23 are connected to the inner wall of the rear panel 43, the outer walls of the upper cover middle portion 11 and the lower cover middle portion 21 are respectively connected to the inner walls of the top panel 42 and the bottom panel 44, the outer walls of the upper cover side panel 14 and the lower cover side panel 24 are respectively connected to the inner walls of the first adhesive sheet 46, the third adhesive sheet 48 and the fourth adhesive sheet 49, the first adhesive sheet 46, the third adhesive sheet 48 and the fourth adhesive sheet 49 are respectively positioned at both ends of the fourth adhesive sheet 49, and the outer walls of the first adhesive sheet 46, the third adhesive sheet 48 and the fourth adhesive sheet 49 are respectively connected to the inner walls of the second adhesive sheet 47, that is, the first adhesive sheet 46, the second adhesive sheet 47, the third adhesive sheet 48 and the fourth adhesive sheet 49 are used for pasting on the peripheral side of the case. I.e. the wrapping paper 4 is wrapped around the outer surfaces of the upper cover 1 and the lower cover 2.

Next, the outer front panel 41, the first adhesive sheet 46, the second adhesive sheet 47, the third adhesive sheet 48, the fourth adhesive sheet 49 and the inner front panel 45 are cut with openings along the upper edge of the lower cover 2, so that the packaging paper 4 is separated into two parts for wrapping the outer surfaces of the upper cover 1 and the lower cover 2 respectively, the operation is simple, the printing on the packaging paper 4 is conveniently and accurately posted at the corresponding positions, and the generation of waste products is reduced.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims (10)

1. A cigarette packet, characterized in that: including the longitudinal section is trapezoidal box body, the box body includes interior (3), upper cover (1) and locates lower cover (2) of the lower extreme of upper cover (1), upper cover (1) rotate with lower cover (2) and are connected, interior (3) set up in lower cover (2), the lateral wall of interior (3) is connected with the inside wall of lower cover (2), the longitudinal section of interior (3) is hollow trapezoid, the height of interior (3) is greater than the height of lower cover (2), interior (3) are equipped with fixture block (31), fixture block (31) and upper cover (1) joint, breach (32) have been seted up to the lateral wall of interior (3).

2. A packet of cigarettes as claimed in claim 1, wherein: the upper cover (1) comprises an upper cover middle part (11), an upper cover front plate (12), an upper cover rear plate (13) and two upper cover side plates (14), wherein the upper cover front plate (12), the upper cover rear plate (13) and the upper cover side plates (14) are connected with the upper cover middle part (11), the upper cover middle part (11) is inclined outwards, and two ends of the upper cover side plates (14) are connected with two ends of the upper cover front plate (12) and the upper cover rear plate (13) respectively.

3. A packet of cigarettes as claimed in claim 2, wherein: the lower cover (2) comprises a lower cover middle part (21), a lower cover front plate (22), a lower cover rear plate (23) and two lower cover side plates (24), wherein the lower cover front plate (22), the lower cover rear plate (23) and the lower cover side plates (24) are connected with the lower cover middle part (21), the lower cover middle part (21) is inclined inwards, and two ends of the lower cover side plates (24) are connected with two ends of the lower cover front plate (22) and the lower cover rear plate (23) respectively.

4. A packet of cigarettes as claimed in claim 3, wherein: the inner periphery (3) comprises an inner periphery first side part (33), an inner periphery front part (34), an inner periphery second side part (35) and an inner periphery rear part (36), wherein two ends of the inner periphery front part (34) are respectively connected with the front end of the inner periphery first side part (33) and the front end of the inner periphery second side part (35), and two ends of the inner periphery rear part (36) are respectively connected with the rear end of the inner periphery first side part (33) and the rear end of the inner periphery second side part (35).

5. The package of claim 4, wherein: the outer wall of the inner periphery front part (34) is connected with the inner wall of the lower cover front plate (22), the outer wall of the inner periphery rear part (36) is connected with the inner wall of the lower cover rear plate (23), and the outer walls of the inner periphery first side part (33) and the inner periphery second side part (35) are respectively connected with the inner wall of the corresponding lower cover side plate (24).

6. A packet of cigarettes as claimed in claim 5, wherein: the number of the clamping blocks (31) is two, and the clamping blocks (31) extend from one end of the inner periphery front part (34) along the direction of the corresponding upper cover side plate (14) until abutting against the inner wall of the corresponding upper cover side plate (14).

7. A packet of cigarettes as claimed in claim 5, wherein: the notch (32) is arranged on the first side part (33) of the inner periphery or the second side part (35) of the inner periphery.

8. A packet of cigarettes as claimed in claim 3, wherein: the cigarette case further comprises integrally formed packaging paper (4), the packaging paper (4) wraps the outer surfaces of the upper cover (1) and the lower cover (2), the packaging paper (4) comprises an outer front panel (41), a top panel (42), a rear panel (43), a bottom panel (44) and an inner front panel (45), the transverse two ends of the outer front panel (41) or the inner front panel (45) are connected with first adhesive pieces (46), the transverse two ends of the top panel (42) are connected with second adhesive pieces (47), the transverse two ends of the rear panel (43) are connected with third adhesive pieces (48), and the transverse two ends of the bottom panel (44) are connected with fourth adhesive pieces (49).

9. A packet of cigarettes as claimed in claim 8, wherein: the inner wall of the outer front panel (41) is connected with the outer wall of the inner front panel (45), the outer walls of the upper cover front panel (12) and the lower cover front panel (22) are connected with the inner wall of the inner front panel (45), the outer walls of the upper cover rear panel (13) and the lower cover rear panel (23) are connected with the inner wall of the rear panel (43), the outer walls of the upper cover middle part (11) and the lower cover middle part (21) are respectively connected with the inner walls of the top panel (42) and the bottom panel (44), the outer walls of the upper cover side panel (14) and the lower cover side panel (24) are respectively connected with the inner walls of the first bonding piece (46), the third bonding piece (48) and the fourth bonding piece (49), and the outer walls of the first bonding piece (46), the third bonding piece (48) and the fourth bonding piece (49) are respectively connected with the inner walls of the second bonding piece (47);

the outer front panel (41), the first adhesive sheet (46), the second adhesive sheet (47), the third adhesive sheet (48), the fourth adhesive sheet (49) and the inner front panel (45) are cut with openings along the upper edge of the lower cover (2).

10. A packet of cigarettes as claimed in claim 9, wherein: the rear panel (43) comprises an upper rear panel (431) and a lower rear panel (432), wherein the inner wall of the upper rear panel (431) is connected with the outer wall of the upper cover rear panel (13), the inner wall of the lower rear panel (432) is connected with the outer wall of the lower cover rear panel (23), and the upper rear panel (431) and the lower rear panel (432) are rotatably connected.