CN217110119U - Double-open type vehicle-mounted refrigerator - Google Patents

Abstract

The utility model discloses an on-vehicle refrigerator of double open type, including box, door closure and bactericidal lamp, be provided with the holding chamber on the box, be provided with the pivot groove on the holding chamber, be provided with the switch of fixed axle and drive fixed axle on the door closure. Through being provided with the bactericidal lamp in the holding intracavity or door closure inboard, thereby can be in the use, continuously carry out germicidal treatment in the refrigerator, prevent to deposit and appear microorganism breeding phenomenon in holding intracavity food, prolong the save time of food, insert through the fixed axle at door closure both ends simultaneously and locate the pivot inslot, make the both ends of door closure form two sets of pivots, when the restriction in fixed axle and the pivot groove of switch unblock door closure one end, the door closure can use two fixed axles of the other end to rotate as the axle center and open, thereby can follow the both ends of door closure and overturn the door closure from the box and open, and then open the holding chamber, the user uses more handy, can all open the holding chamber with handy direction in the both sides of box.

Description

Double-open type vehicle-mounted refrigerator

Technical Field

The utility model relates to an on-vehicle refrigerator field, especially an on-vehicle refrigerator of double open type.

Background

The vehicle-mounted refrigerator has the advantages of being convenient to carry and carry, but the existing vehicle-mounted refrigerator can only be opened from one side, and people on one side always use the refrigerator not conveniently for people on two sides of the vehicle-mounted refrigerator, and the function is single.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model aims to provide a can two sides open the door to convenient to use user has the on-vehicle refrigerator of double open type of disinfection function simultaneously.

The utility model discloses a technical scheme that the solution problem adopted is: a double-open type in-vehicle refrigerator comprising:

the box body is provided with an accommodating cavity with an upper opening, and rotating shaft grooves are symmetrically formed in the side walls of the two sides of the front end and the rear end of the opening of the accommodating cavity;

the door cover is arranged on the box body and covers the accommodating cavity, fixed shafts which can be inserted into the rotating shaft grooves in a telescopic mode are symmetrically arranged on two sides of the front end and the rear end of the door cover, and switches for driving the fixed shafts on the two sides of the end to stretch are arranged on two ends of the door cover;

the sterilizing lamp is arranged on the inner side of the door cover or in the accommodating cavity.

As a further improvement of the above technical solution, two ends of the door cover are respectively provided with an installation cavity, two fixing shafts are symmetrically arranged in the installation cavities, the tail ends of the fixing shafts penetrate through the door cover and extend to the outer side of the door cover, a limiting structure is arranged on a part of the fixing shafts located in the installation cavities, two swinging members are symmetrically pivoted in the installation cavities, the tail ends of the two swinging members are respectively connected with the corresponding limiting structures and used for driving the fixing shafts to move axially along the fixing shafts, the switch is a pulling cover pivoted on the door cover and capable of being turned over up and down relative to the door cover, a pulling platform which is located in the installation cavity and abutted against the front ends of the two swinging members and used for driving the swinging members to swing is arranged at the bottom of the pulling cover, and a reset device for driving the fixing shafts to move towards the outer side of the door cover is arranged on the fixing shafts.

As a further improvement of the technical scheme, the limiting structure is a limiting groove arranged on the fixed shaft, and the tail end of the swinging piece is movably inserted in the limiting groove

As a further improvement of the above technical solution, the swinging member includes a central pivot hole, a first rod body located at the front end and a second rod body located at the rear end, the bottom of the installation cavity is provided with a pivot for the pivot hole to be sleeved therein, the second rod body is inserted into the spacing groove, the first rod body abuts against the shifting table, an included angle between the first rod body and the second rod body is 60-150 degrees, the spacing groove is obliquely arranged on the fixed shaft, and the axes of the two first rod bodies are located on the same axis when the initial positions are located on the same axis

As a further improvement of the above technical solution, the side wall of the door cover is provided with a second cavity, an opening of the second cavity is provided with a sealing plate, the sealing plate is provided with a through hole for the end of the fixing shaft to penetrate therethrough, the fixing shaft is provided with a top platform located in the second cavity, the top platform abuts against the inner side wall of the sealing plate when the fixing shaft extends out of the side surface of the door cover, the reset device is a compression spring sleeved on the fixing shaft, one end of the compression spring abuts against the inner wall of the second cavity, and the other end of the compression spring abuts against the top platform.

As a further improvement of the above technical solution, the bottom of the box body is provided with rollers, side walls at both ends of the box body are respectively pivoted with a main handle, the main handle can be turned up in the height direction relative to the box body so that a user can hold the main handle to lift the box body, and at least one main handle is provided with an extension handle for extending the length of the main handle.

As a further improvement of the technical scheme, the main handle comprises a mounting seat and a handle assembly, the mounting seat is fixed on the side wall of the box body, and one end of the handle assembly is rotatably connected with the mounting seat.

As a further improvement of the technical proposal, two ends of the mounting seat are respectively provided with a shaft hole, the handle assembly comprises two first handle bodies which are oppositely arranged, a first handle is connected between the tail ends of the two first handle bodies, the front ends of the two first handle bodies are provided with rotating shaft pieces which are respectively inserted into the two shaft holes, the extension handle comprises two second handle bodies which are oppositely arranged, the length of the second handle body is larger than that of the first handle body, the second handle bodies are positioned outside the first handle bodies and are fixed relative to the first handle bodies, the front ends of the second handle bodies are pivoted on the rotating shaft piece, the tail ends of the two second handle bodies are provided with second handles, the second handle comprises a stop lever, two middle rods and a holding rod, the back of the stop lever is symmetrically arranged at the tail ends of the two second handle bodies, the two middle rods are respectively arranged at the two ends of the stop lever, and the two ends of the holding rod are respectively fixed at the tail ends of the two middle rods.

As a further improvement of the technical scheme, the tail end of the rotating shaft piece is provided with a clamping ring, the back surface of the mounting seat is provided with a vacant position, the clamping ring is located at the vacant position when the rotating shaft piece is inserted into the shaft hole, and a limiting clamping plate clamped on the clamping ring is arranged in the vacant position.

As a further improvement of the technical scheme, the extension handle is arranged on one of the main handles, and the roller is arranged on the other side of the bottom of the box body, which is opposite to the extension handle.

The utility model has the advantages that: through being provided with the bactericidal lamp in the holding intracavity or door closure inboard, thereby can be in the use, continuously carry out germicidal treatment in the refrigerator, prevent to deposit and appear microorganism breeding phenomenon in holding intracavity food, prolong the save time of food, insert through the fixed axle at door closure both ends simultaneously and locate the pivot inslot, make the both ends of door closure form two sets of pivots, when the restriction in fixed axle and the pivot groove of switch unblock door closure one end, the door closure can use two fixed axles of the other end to rotate as the axle center and open, thereby can follow the both ends of door closure and overturn the door closure from the box and open, and then open the holding chamber, the user uses more handy, can all open the holding chamber with handy direction in the both sides of box.

Drawings

The invention will be further explained with reference to the drawings and the detailed description.

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a split view of the preferred embodiment of the present invention;

FIG. 3 is a schematic view of a door according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view of the door cover split structure according to the preferred embodiment of the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

FIG. 6 is a schematic structural view of a swinging member according to a preferred embodiment of the present invention;

FIG. 7 is a schematic structural view of a fixing shaft according to a preferred embodiment of the present invention;

FIG. 8 is a schematic structural view of a pull cover according to a preferred embodiment of the present invention;

FIG. 9 is a schematic structural view of the preferred embodiment of the present invention, wherein the main handles at both ends are turned up for lifting the box body;

FIG. 10 is a schematic structural view of the preferred embodiment of the present invention when the extension handle is used to pull the box body to move;

FIG. 11 is a schematic view of a main handle with an extension handle according to a preferred embodiment of the present invention;

fig. 12 is an exploded view of fig. 11.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 12, a double-open type in-vehicle refrigerator includes:

the box body 10 is provided with an accommodating cavity 11 with an upper opening, and the side walls of the two sides of the front end and the rear end of the opening of the accommodating cavity 11 are symmetrically provided with rotating shaft grooves 112;

the door cover 20 is arranged on the box body 10 and covers the accommodating cavity 11, the two sides of the front end and the rear end of the door cover 20 are symmetrically provided with fixing shafts 24 which can be inserted into the rotating shaft grooves 112 in a telescopic manner, and the two ends of the door cover 20 are provided with switches for driving the fixing shafts 24 at the two sides of the end to stretch and retract;

the germicidal lamp is arranged on the inner side of the door cover 20 or in the accommodating cavity 11.

Through being provided with the bactericidal lamp in holding chamber 11 or door closure 20 inboard, thereby can be in the use, continuously carry out germicidal treatment in the refrigerator, prevent to deposit the microorganism phenomenon of breeding in holding chamber 11 the food, prolong the save time of food, simultaneously insert through the fixed axle 24 at door closure 20 both ends and locate in pivot groove 112, make the both ends of door closure 20 form two sets of pivots, when unblock the fixed axle 24 of door closure 20 one end and the restriction of pivot groove 112 through the switch, door closure 20 can use two fixed axles 24 of the other end to rotate as the axle center and open, thereby can overturn door closure 20 from box 10 from the both ends of door closure 20 and open, and then open holding chamber 11, the user uses more handy, can all open holding chamber 11 with handy direction in the both sides of box 10.

Preferably, two mounting cavities 21 are respectively arranged at two ends of the door cover 20, two fixing shafts 24 are symmetrically arranged in the mounting cavities 21, the tail ends of the fixing shafts 24 penetrate through the door cover 20 and extend to the outer side of the door cover 20, a limiting structure is arranged at a part of the fixing shaft 24 located in the mounting cavity 21, two swinging members 23 are symmetrically pivoted in the mounting cavity 21, the tail ends of the two swinging members 23 are respectively connected with the corresponding limiting structures and used for driving the fixing shaft 24 to move axially along the fixing shaft, the switch is a pulling cover 22 pivoted on the door cover 20 and capable of being turned up and down relative to the door cover 20, a pulling platform 221 which is located in the mounting cavity 21 and abutted against the front ends of the two swinging members 23 and used for driving the swinging members 23 to swing is arranged at the bottom of the pulling cover 22, and a reset device for driving the fixing shaft 24 to move towards the outer side of the door cover 20 is arranged on the fixing shaft 24. When the door unlocking device is used, the pulling cover 22 is pulled, the pulling platform 221 is abutted to the front ends of the two swinging pieces 23, the swinging pieces 23 are driven to swing, the tail ends of the swinging pieces 23 can swing synchronously, the fixing shaft 24 is driven to horizontally move along the axial direction of the fixing shaft 24, then the fixing shaft is contracted into the door cover 20 from the outer side of the door cover 20, and further the fixing shaft is separated from the rotating shaft groove 112, so that one end of the door cover 20 is unlocked, when a user loosens the pulling cover 22, the resetting device can drive the fixing shaft 24 to extend out of the outer side of the door cover 20 again, and the pulling cover 22 can be synchronously driven to reset.

Preferably, the limiting structure is a limiting groove 241 arranged on the fixed shaft 24, and the tail end of the oscillating piece 23 is movably inserted into the limiting groove 241. On this basis, it is preferable that the swinging member 23 includes a central pivot hole 231, a first rod 232 located at the front end, and a second rod 233 located at the rear end, the bottom of the installation cavity 21 is provided with a pivot 26 for the pivot hole 231 to be sleeved therein, the second rod 233 is inserted in the limiting groove 241, the first rod 232 abuts against the dial table 221, an included angle between the first rod 232 and the second rod 233 is 60-150 degrees, the limiting groove 241 is obliquely arranged on the fixed shaft 24, and the axes of the two first rods 232 are located on the same axis at the initial position. Through the matching of the limiting groove 241 and the second rod 233, the movement of the second rod 233 in the horizontal direction can be limited, and the movement of the second rod 233 in the vertical direction is not limited, so that the second rod 233 can drive the fixing shaft 24 conveniently.

In one embodiment, the limiting structure is a limiting pin pivoted on the fixed shaft 24, and the end of the swinging member 23 is provided with a guide slot for the limiting pin to be inserted therein and to move therein.

Preferably, the side wall of the door cover 20 is provided with a second cavity 30, an opening of the second cavity 30 is provided with a sealing plate 31, the sealing plate 31 is provided with a through hole for the end of the fixing shaft 24 to penetrate through, the fixing shaft 24 is provided with a top table 242 located in the second cavity 30, the top table 242 abuts against the inner side wall of the sealing plate 31 when the fixing shaft 24 extends out of the side surface of the door cover 20, the reset device is a compression spring 25 sleeved on the fixing shaft 24, one end of the compression spring 25 abuts against the inner wall of the second cavity 30, and the other end of the compression spring 25 abuts against the top table 242.

In one embodiment, the return means is an elastic rubber post disposed at the front end of the stationary shaft 24 and abutting against the front end surface of the stationary shaft 24.

Further optimize, because the processing degree of difficulty is higher on the direct setting of pivot groove 112 on the holding chamber 11 lateral wall, preferably the both sides lateral wall at both ends all is provided with the fixed slot around the holding chamber 11, demountable installation has embedding piece 111 on the fixed slot, pivot groove 112 set up in on the embedding piece 111. Through the movable mounting of embedding piece 111 and fixed slot, firstly reduced the processing degree of difficulty, secondly also can conveniently change when the pivot groove 112 breaks down the condition.

Further preferably, since the vehicle-mounted refrigerator involves horizontal movement and movement in the height direction during transportation, the bottom of the box 10 is preferably provided with rollers 70, the side walls of both ends of the box 10 are pivotally connected with the main handles 40, the main handles 40 can be turned up in the height direction relative to the box 10 so that a user can hold the main handles 40 to lift the box 10, and at least one of the main handles 40 is provided with an extension handle 60 for extending the length of the main handle 40. In the placing state, the main handle 40 and the extension handle 60 are naturally laid down and attached to the side wall of the box body 10, so that the occupied space is reduced, the length when the main handle 40 is used is shorter than that when the extension handle 60 is used, when the vehicle-mounted refrigerator needs to be moved in the height direction, the user can stand, if the two main handles 40 are held from two sides, the vehicle-mounted refrigerator can be lifted, the vehicle-mounted refrigerator is in a suspended state, when the vehicle-mounted refrigerator needs to be moved in the horizontal direction, the vehicle-mounted refrigerator is still placed on the ground, the length of the main handle 40 is extended through the extension handle 60, so that the vehicle-mounted refrigerator can be dragged from one side by using the roller 70 in the standing state, and the vehicle-mounted refrigerator is more convenient to move and carry.

Preferably, the main handle 40 includes a mounting seat 50 and a handle assembly, the mounting seat 50 is fixed on the sidewall of the box 10, and one end of the handle assembly is rotatably connected to the mounting seat 50.

Preferably, the two ends of the mounting seat 50 are respectively provided with a shaft hole 501, the handle assembly includes two first handle bodies 51 which are oppositely arranged, a first handle 52 is connected between the ends of the two first handle bodies 51, the front ends of the two first handle bodies 51 are provided with a rotating shaft member 53 which is respectively inserted into the two shaft holes 501, the extension handle 60 includes two second handle bodies 61 which are oppositely arranged, the length of the second handle body 61 is greater than that of the first handle body 51, the second handle body 61 is positioned outside the first handle body 51 and is relatively fixed with the first handle body 51, the front end of the second handle body 61 is pivoted on the rotating shaft member 53, the ends of the two second handle bodies 61 are provided with a second handle, the second handle includes a blocking rod 62, two middle rods 63 and a handle rod 64, the blocking rod 62 is symmetrically arranged at the ends of the two second handle bodies 61, the two middle rods 63 are respectively arranged at the two ends of the blocking rod 62, the two ends of the holding rod 64 are respectively fixed at the tail ends of the two intermediate rods 63.

In one embodiment, the second handle body 61 is freely movable relative to the first handle body 51 so that the user does not move with the first handle body 51 when using the second grip.

In one embodiment, the extension handle 60 is secured directly to the end of the handle assembly, thereby directly extending the length of the handle 60 assembly.

Preferably, a snap ring 531 is arranged at the tail end of the rotating shaft member 53, a vacant position is arranged on the back of the mounting seat 50, the snap ring 531 is located at the vacant position when the rotating shaft member 53 is inserted into the shaft hole 501, and a limit snap plate 502 clamped on the snap ring 531 is arranged in the vacant position. The rotating shaft member 53 is inserted into the shaft hole 501, and then the limit clamping plate 502 is clamped into the clamping ring 531 on the vacant position, so that the rotating shaft member 53 cannot be separated. The rotating shaft member 53 may be fixed in other ways during actual use. For example, a screw thread is provided at the end of the shaft member 53, so that the end of the shaft member 53 is screwed into the inner end of the shaft hole 501, or the shaft member 53 is fixed to the first handle 51, and then the first grip 52 and the two first handles 51 are fixed to restrict the position of the shaft member 53, so that the shaft member 53 can be well fixed in the shaft hole 501.

Preferably, the extension handle 60 is disposed on one of the main handles 40, and the roller 70 is disposed at the other side of the bottom of the box 10 opposite to the extension handle 60, so that in a placing state, the other side of the box 10 is in direct contact with the ground, and the box 10 is placed more stably and is not easy to slide.

In order to make the main handle 40 fall freely under gravity to be attached to the surface of the box 10 when not in use, a gravity member is preferably provided on the main handle 40, and the gravity member is preferably provided on the first grip 52.

The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct or indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims (10)

1. A double-open type vehicle-mounted refrigerator is characterized by comprising:

the box body (10), the box body (10) is provided with an accommodating cavity (11) with an upper opening, and the side walls of the two sides of the front end and the rear end of the opening of the accommodating cavity (11) are symmetrically provided with rotating shaft grooves (112);

the door cover (20) is arranged on the box body (10) and covers the accommodating cavity (11), two sides of the front end and the rear end of the door cover (20) are symmetrically provided with fixing shafts (24) which can be inserted into the rotating shaft grooves (112) in a telescopic mode, and two ends of the door cover (20) are provided with switches used for driving the fixing shafts (24) on the two sides of the end to stretch;

the germicidal lamp is arranged on the inner side of the door cover (20) or in the accommodating cavity (11).

2. The double-open type vehicle-mounted refrigerator according to claim 1, wherein:

two ends of the door cover (20) are respectively provided with an installation cavity (21), two fixing shafts (24) are symmetrically arranged in the installation cavity (21), the tail ends of the fixing shafts (24) penetrate through the door cover (20) and extend to the outer side of the door cover (20), a limiting structure is arranged on the part, located in the installation cavity (21), of the fixing shafts (24), two swinging pieces (23) are symmetrically pivoted in the installation cavity (21), the tail ends of the two swinging pieces (23) are respectively connected with the corresponding limiting structures and used for driving the fixing shafts (24) to move along the axial direction of the fixing shafts, the switch is a pulling cover (22) which is pivoted on the door cover (20) and can be turned over up and down relative to the door cover (20), the bottom of the pulling cover (22) is provided with a pulling platform (221) which is located in the installation cavity (21), abutted against the front ends of the two swinging pieces (23) and used for driving the swinging pieces (23), and a second fixing shaft (24) which drives the fixing shafts (24) to move towards the outer side of the door cover (20) is arranged on the fixing shafts (24) A bit device.

3. The double-open type vehicle-mounted refrigerator according to claim 2, wherein:

the limiting structure is a limiting groove (241) formed in the fixed shaft (24), and the tail end of the swinging piece (23) is movably inserted into the limiting groove (241).

4. The double-open type vehicle-mounted refrigerator according to claim 3, wherein:

swing piece (23) include the pin joint hole (231) at center and be located the first body of rod (232) of front end and be located the second body of rod (233) of rear end, installation cavity (21) bottom is provided with and supplies pin joint hole (231) cover to locate pivot (26) wherein, the second body of rod (233) is inserted and is located in spacing groove (241), first body of rod (232) with dial platform (221) butt, the contained angle of the first body of rod (232) and the second body of rod (233) is 60-150 degrees, spacing groove (241) slope sets up on fixed axle (24), and the axis of two first bodies of rod (232) is located same axis when initial position.

5. The double-open type vehicle-mounted refrigerator according to claim 2, 3 or 4, wherein:

the lateral wall of door-cover (20) is provided with second cavity (30), the opening part of second cavity (30) is provided with shrouding (31), be provided with on shrouding (31) and supply fixed axle (24) end to wear to locate the perforation wherein, be provided with on fixed axle (24) and be located second cavity (30) top platform (242), when fixed axle (24) stretches out door-cover (20) side top platform (242) with shrouding (31) inside wall butt, resetting means locates compression spring (25) on fixed axle (24) for the cover, the one end and the second cavity (30) inner wall butt of compression spring (25), the other end of compression spring (25) with top platform (242) butt.

6. The double-open type vehicle-mounted refrigerator according to claim 1, 2, 3 or 4, wherein:

the bottom of the box body (10) is provided with rollers (70), the side walls of two ends of the box body (10) are respectively pivoted with a main handle (40), the main handles (40) can be turned up in the height direction relative to the box body (10) so that a user can hold the main handles (40) to lift the box body (10), and at least one main handle (40) is provided with an extension handle (60) for extending the length of the main handle (40).

7. The double-open type vehicle-mounted refrigerator according to claim 6, wherein:

the main handle (40) comprises a mounting seat (50) and a handle assembly, the mounting seat (50) is fixed on the side wall of the box body (10), and one end of the handle assembly is rotatably connected with the mounting seat (50).

8. The double-open type vehicle-mounted refrigerator according to claim 7, wherein:

the handle assembly comprises two first handle bodies (51) which are oppositely arranged, a first handle (52) is connected between the tail ends of the two first handle bodies (51), rotating shaft parts (53) which are respectively inserted into the two shaft holes (501) are arranged at the front ends of the two first handle bodies (51), the extension handle (60) comprises two second handle bodies (61) which are oppositely arranged, the length of each second handle body (61) is larger than that of each first handle body (51), the second handle bodies (61) are positioned outside the first handle bodies (51) and are relatively fixed with the first handle bodies (51), the front ends of the second handle bodies (61) are pivoted on the rotating shaft parts (53), the second handles are arranged at the tail ends of the two second handle bodies (61) and comprise stop rods (62), two middle rods (63) and handle rods (64), the back surfaces of the stop rods (62) are symmetrically arranged at the tail ends of the two second handle bodies (61), the two middle rods (63) are respectively arranged at the two ends of the stop rods (62), and the two ends of the holding rod (64) are respectively fixed at the tail ends of the two middle rods (63).

9. The double-open type vehicle-mounted refrigerator according to claim 8, wherein:

the end of the rotating shaft piece (53) is provided with a clamping ring (531), the back of the mounting seat (50) is provided with a vacancy, the rotating shaft piece (53) is inserted into the shaft hole (501) and the clamping ring (531) is located at the vacancy, and a limiting clamping plate (502) clamped on the clamping ring (531) is arranged in the vacancy.

10. The double-open type vehicle-mounted refrigerator according to claim 6, wherein:

the extension handle (60) is arranged on one of the main handles (40), and the roller (70) is arranged on the other side of the bottom of the box body (10) opposite to the extension handle (60).

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