CN220553298U - Mobile hard disk - Google Patents

Abstract

The embodiment of the application provides a mobile hard disk, relates to the technical field of data storage equipment, and comprises: the device comprises a shell, a hard disk body and a radiator; the shell is provided with a sealing cavity, one side cavity wall of the sealing cavity is a heat conducting cavity wall, the hard disk body is arranged in the sealing cavity, and the hard disk body is in heat conducting connection with the heat conducting cavity wall; the radiator is arranged on the shell, is positioned outside the sealing cavity and is used for radiating heat of the heat conducting cavity wall. The mobile hard disk has the function of actively radiating the hard disk body.

Description

Mobile hard disk

Technical Field

The application relates to the technical field of data storage equipment, in particular to a mobile hard disk.

Background

A mobile hard disk is a data storage device that is very widely used. The mobile hard disk can generate heat in the process of data reading and writing. Under the condition that the mobile hard disk is raised to a certain temperature, a protection mechanism of the mobile hard disk is triggered, so that the read-write speed of the mobile hard disk is automatically reduced, and the read-write speed of the mobile hard disk can not meet the use requirement of a user.

Disclosure of Invention

The embodiment of the application provides a mobile hard disk, which is at least used for solving the problem of how to reduce the temperature of the mobile hard disk in the working process.

The mobile hard disk provided by the embodiment of the application comprises: the device comprises a shell, a hard disk body and a radiator; the shell is provided with a sealing cavity, one side cavity wall of the sealing cavity is a heat conducting cavity wall, the hard disk body is arranged in the sealing cavity, and the hard disk body is in heat conducting connection with the heat conducting cavity wall; the radiator is arranged on the shell, is positioned outside the sealing cavity and is used for radiating heat of the heat conducting cavity wall.

Optionally, one side of heat conduction chamber wall facing away from sealed chamber is equipped with the accommodation chamber, heat conduction chamber wall is equipped with the orientation a plurality of fin that stretches out in the accommodation chamber, the radiator is radiator fan, radiator fan is used for right the fin dispels the heat.

Optionally, the casing includes main part, first end cover and second end cover, the main part is tubular structure, is located the heat conduction chamber wall in the main part will the main part is divided into first lumen and second lumen, the relative both ends of first lumen are equipped with first opening and second opening respectively, first end cover shutoff first opening, second end cover shutoff second opening, by first end cover with the first lumen formation of second end cover shutoff sealed chamber, the second lumen formation the holding chamber.

Optionally, the mobile hard disk further comprises a circuit board, the circuit board is arranged in the sealed cavity, a data transmission interface is arranged on the circuit board, and the hard disk body is electrically connected with the data transmission interface; one of the first end cover and the second end cover is provided with a through hole, the data transmission interface is inserted into the through hole, and the data transmission interface is in sealing connection with the wall of the through hole.

Optionally, a third opening and a fourth opening are respectively arranged at two opposite ends of the second lumen, the first end cover also seals the third opening, a vent hole is arranged at the part of the first end cover facing the second lumen, and the vent hole is communicated with the second lumen; an air inlet of the cooling fan is positioned in the accommodating cavity, and an air outlet of the cooling fan is connected with the vent hole; or, the air inlet of the cooling fan is connected with the vent hole, and the air outlet of the cooling fan is positioned in the accommodating cavity.

Optionally, an airflow area is formed between the fourth opening and the vent hole, and the heat sink is at least partially located in the airflow area.

Optionally, each of the cooling fins extends along the extending direction of the main body portion, and an airflow channel is formed between adjacent cooling fins.

Optionally, the heat dissipation fan is disposed on the heat conduction cavity wall.

Optionally, the heat conducting cavity wall is provided with a concave area, the radiator fan is arranged in the concave area, the shell of the radiator fan protrudes out of the side surface of the heat conducting cavity wall, which faces the sealing cavity, and the shell of the radiator fan is in sealing connection with the side wall of the concave area.

Optionally, the concave area is concave from the edge of the heat conduction cavity wall to the inner side, the shell is provided with a groove, and the side wall of the concave area is inserted into the groove.

The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:

in the embodiment of the application, the heat that the hard disk body produced in the read-write process can be transferred to the heat conduction cavity wall, can utilize the radiator to dispel the heat to the heat conduction cavity wall, thereby realize carrying out active heat dissipation to the hard disk body, with the temperature that reduces the mobile hard disk in the course of the work, and, through utilizing the heat conduction cavity wall in the hard disk shell to carry out heat conduction, can avoid the inside heat transfer that produces of hard disk to the hard disk casing, especially under the hard disk casing is the metal casing's condition, adopt the radiating mode of this application, the heat can not transfer to the metal casing, and then the user also can not contact the heat source, the user is to the inside heat noninductivity that produces of hard disk promptly, help promoting user's use experience. In addition, through the mode that the hard disk body set up in the sealed chamber of casing, promote the waterproof dustproof performance of mobile hard disk, can reduce the fault rate of hard disk body.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

Fig. 1 is a schematic diagram of a mobile hard disk according to an embodiment of the present application;

fig. 2 is a schematic diagram of a mobile hard disk according to an embodiment of the present application;

fig. 3 is a schematic view of a main body provided in an embodiment of the present application;

FIG. 4 is an exploded view of a body portion and a heat sink according to an embodiment of the present application;

fig. 5 is a schematic view of a main body and a heat sink according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a main body, a radiator and a hard disk body according to an embodiment of the present application;

fig. 7 is an exploded schematic diagram of a mobile hard disk according to an embodiment of the present application;

FIG. 8 is a schematic diagram of another mobile hard disk according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram of another mobile hard disk according to an embodiment of the present application.

Reference numerals illustrate:

100-a mobile hard disk; 110-a housing; 111-heat conducting cavity walls; 1111-recessed region; 112-heat sink; 113-a body portion; 1131-a first lumen; 1132-a second lumen; 1133-fourth openings; 114-a first end cap; 1141-vent holes; 115-a second end cap; 1151-a via; 120-a hard disk body; 130-a heat sink; 131-grooves; 140-a circuit board; 141-a data transmission interface; 150-a bracket; 160-a first liner; 170-a second liner.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Furthermore, although terms used in the present application are selected from publicly known and commonly used terms, some terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

In addition, it is required that the present application be understood, not simply by the actual terms used but by the meaning of each term lying within.

The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

The embodiment of the application provides a mobile hard disk. Referring to fig. 1 to 7, a mobile hard disk 100 provided in an embodiment of the present application may include: a housing 110, a hard disk body 120, and a heat sink 130.

The housing 110 is provided with a sealed cavity. Referring to fig. 5 and 6, one side wall of the sealed cavity is a heat conductive cavity wall 111. The hard disk body 120 is disposed in the sealed cavity, and the hard disk body 120 is thermally connected to the heat conducting cavity wall 111. The radiator 130 is disposed on the housing 110, the radiator 130 is disposed outside the sealed cavity, and the radiator 130 is used for radiating heat from the heat conducting cavity wall 111. Illustratively, the radiator 130 may be an air-cooled radiator, a water-cooled radiator, or the like. Illustratively, the heat sink 130 may also include a cooling fin, such that the cooling fin may be utilized to dissipate heat from the thermally conductive cavity wall 111.

In this way, in the embodiment of the present application, the heat generated by the hard disk body 120 in the read-write process may be transferred to the heat conducting cavity wall 111, and the heat radiator 130 may be utilized to radiate the heat conducting cavity wall 111, so as to realize active heat radiation of the hard disk body 120, so as to reduce the temperature of the mobile hard disk in the working process. And, through utilizing the heat conduction cavity wall in the hard disk shell to carry out heat conduction, can avoid the inside heat transfer that produces of hard disk to the hard disk casing, especially under the hard disk casing is metal casing's the condition, adopt the radiating mode of this application, the heat can not transmit to the metal casing, and then the user also can not contact the heat source, and the user is to the heat noninductivity of hard disk inside production promptly, helps promoting user's use experience. In addition, the waterproof and dustproof performance of the mobile hard disk 100 can be improved by arranging the hard disk body 120 in the sealing cavity of the casing 110, so that the failure rate of the hard disk body 120 can be reduced.

It should be noted that, those skilled in the art generally refer to the hard disk body 120 as a hard disk. Illustratively, the hard disk body 120 may be a high-speed solid state disk. Of course, the hard disk body 120 may be other hard disks in the prior art, or the hard disk body 120 may be other hard disks that appear in the future, which is not listed here.

In some embodiments, the heat source portion of the hard disk body 120 may be primarily thermally connected with the thermally conductive cavity wall 111. For example, in the case where the hard disk body 120 is a high-speed solid state disk, the storage unit on the high-speed solid state disk is a heat source unit. Thus, it is possible to provide a heat conductive glue on the storage unit and to connect the storage unit to the heat conductive cavity wall 111 with the heat conductive glue. Further, the temperature of the hard disk body 120 can be reduced by radiating the heat from the heat conducting cavity wall 111.

It is also noted that the "sealed cavity" can be understood by those skilled in the art based on the common general knowledge in the art. It should be emphasized that the "sealed cavity" does not have to be an absolutely closed cavity, and those skilled in the art can flexibly set the waterproof and dustproof level of the "sealed cavity" according to actual requirements, and the waterproof and dustproof level of the "sealed cavity" will not be described in detail herein.

In order to enable those skilled in the art to better practice the solutions provided by the embodiments of the present application, the following more detailed examples are provided for reference to those skilled in the art.

Referring to fig. 3, in some embodiments, the side of the thermally conductive cavity wall 111 facing away from the sealed cavity is provided with a receiving cavity. The heat conducting cavity wall 111 is provided with a plurality of heat sinks 112 protruding towards the receiving cavity. In this way, the heat sink 112 can be protected by arranging the heat sink 112 in the accommodating cavity, so as to prevent the heat sink 112 from bending under the condition of collision. In some embodiments, the heat sink 130 is a heat dissipating fan, which is used to dissipate heat from the heat sink 112. In this way, the heat dissipation fin 112 can dissipate heat based on the principle of air cooling heat dissipation, thereby realizing indirect heat dissipation of the hard disk body 120. In addition, the air-cooled heat dissipation has the advantages of simple structure and higher heat dissipation efficiency.

Referring to fig. 7, in some embodiments, the housing 110 may include a main body portion 113, a first end cap 114, and a second end cap 115. The body portion 113 is of tubular construction, and a thermally conductive lumen wall 111 within the body portion 113 separates the body portion 113 into a first lumen 1131 and a second lumen 1132. Opposite ends of the first lumen 1131 are provided with a first opening and a second opening, respectively. The first end cap 114 closes off the first opening, the second end cap 115 closes off the second opening, the first lumen 1131, which is closed off by the first end cap 114 and the second end cap 115, forms a sealed cavity, and the second lumen 1132 forms a receiving cavity.

Illustratively, the body portion 113 may be made of a profile. The profile is an object with a certain appearance size and a certain section. For example, the body portion 113 may be an aluminum profile. Alternatively, the body portion 113 may be made of other materials having good heat conductive properties. In the case where the main body 113 is an aluminum profile, a blank of the main body 113 may be processed by extrusion molding. Further, the blank may be machined into a desired shape by way of cutting machining, for example. In the extrusion molding process, the heat conducting cavity wall 111 and the heat radiating fins 112 can be formed on the blank, so that the manufacturing difficulty of the main body part 113 can be reduced, and the production cost of the mobile hard disk 100 can be reduced.

In some embodiments, the mobile hard disk 100 may also include a circuit board 140. The circuit board 140 is disposed in the sealed cavity, the circuit board 140 is provided with a data transmission interface 141, and the hard disk body 120 is electrically connected with the data transmission interface 141. One of the first end cap 114 and the second end cap 115 is provided with a through hole 1151, the data transmission interface 141 is inserted into the through hole 1151, and the data transmission interface 141 is in sealing connection with a wall of the through hole 1151. Illustratively, the data transmission interface 141 may be a Type-C receptacle.

Of course, in other embodiments, the data transmission interface 141 may be other interfaces in the prior art or other interfaces that may occur in the future, and will not be described in detail herein. In this way, dust or moisture can be prevented from entering the sealed cavity through the gap between the data transmission interface 141 and the wall of the through hole 1151 by means of the sealed connection between the data transmission interface 141 and the wall of the through hole 1151.

In some embodiments, the second lumen 1132 is provided with a third opening and a fourth opening 1133 at opposite ends, respectively, and the first end cap 114 also seals off the third opening. The first end cap 114 has a vent 1141 disposed therein toward the second lumen 1132, the vent 1141 being in communication with the second lumen 1132.

Referring to fig. 1 and 2, in some embodiments, an air inlet of the cooling fan is located in the accommodating cavity, and an air outlet of the cooling fan is connected to the air vent 1141. In this way, the air in the environment can be supplemented into the accommodating cavity through the fourth opening 1133 under the action of the cooling fan, absorb the heat on the cooling fin 112, and be discharged from the accommodating cavity by the cooling fan, so as to dissipate the heat of the cooling fin 112, and further realize the heat dissipation of the hard disk body 120.

Referring to fig. 8 and 9, in other embodiments, an air inlet of the cooling fan is connected to the air vent 1141, and an air outlet of the cooling fan is located in the accommodating cavity. In this way, the air in the environment can be pumped into the accommodating cavity by the cooling fan, absorb the heat on the cooling fin 112, and be discharged out of the accommodating cavity through the fourth opening 1133 under the action of the air pressure in the accommodating cavity, so as to dissipate the heat of the cooling fin 112, and further realize the heat dissipation of the hard disk body 120.

In an embodiment of the present application, an airflow area is formed between the fourth opening 1133 and the ventilation hole 1141, and the heat sink 112 is at least partially located in the airflow area. In some embodiments, each fin 112 extends along the extending direction of the main body portion 113, and airflow channels are formed between adjacent fins 112. In this way, the air flow can be made to flow between the adjacent fins 112, and the fins 112 can be prevented from obstructing the air flow.

Referring to fig. 4 to 6, in some embodiments, a heat dissipation fan may be provided to the heat conduction cavity wall 111. Illustratively, referring to fig. 4, the heat conducting cavity wall 111 is provided with a recessed area 1111, and a heat dissipating fan is disposed in the recessed area 1111. The housing of the cooling fan protrudes from the side of the heat conducting cavity wall 111 facing the sealing cavity, and is in sealing connection with the side wall of the recess 1111. In this way, the heat radiation fan portion can be located in the first cavity 1131, so that the thickness of the second cavity 1132 can be reduced, and the overall thickness of the mobile hard disk 100 can be reduced.

Referring to fig. 4 and 5, in some embodiments, the recess 1111 is recessed inward from the edge of the heat conducting cavity wall 111, the housing of the heat dissipating fan is provided with a groove 131, and the sidewall of the recess 1111 is inserted into the groove 131. Referring to fig. 2, 8 and 9, in some embodiments, the groove wall of the groove 131 and the first end cap 114 enclose a mounting portion, a heat dissipating fan is disposed on the mounting portion, and a housing of the heat dissipating fan is hermetically connected to a periphery of the mounting portion. It should be noted that, in the case where the cooling fan is disposed in the recess 1111, the housing of the cooling fan, the cavity wall of the first cavity 1131, the first end cap 114, and the second end cap 115 may jointly enclose a sealed cavity.

Referring to fig. 7, in some embodiments, the mobile hard disk 100 may further include a support 150, the support 150 is disposed in the sealed cavity, and the circuit board 140 is disposed on the support 150.

Hereinafter, an assembly process of the main structure of the portable hard disk 100 will be briefly explained with reference to the drawings.

Illustratively, referring to fig. 7, circuit board 140 may be first mounted to bracket 150 using a threaded connection. Further, the plugging portion at the end of the hard disk body 120 may be plugged into the plugging interface on the circuit board 140. Further, the hard disk body 120 may be fixed using a screw connection. Further, a heat conductive paste may be disposed on a surface of the hard disk body 120 facing the heat conductive cavity wall 111. Further, the hard disk body 120, the circuit board 140 and the bracket 150, which are connected to each other, may be disposed in the first lumen 1131 of the main body 113, and the side of the hard disk body 120 where the heat conductive adhesive is disposed may be thermally connected to the heat conductive cavity wall 111. Further, referring to fig. 4 and 5, a heat sink 130 may be disposed within the recess 1111.

It should be noted that, referring to fig. 7, in some embodiments, the mobile hard disk 100 may further include a first liner 160. A first liner 160 may be disposed between the first end cap 114 and the body portion 113, and the first liner 160 may seal the first opening. In this way, the sealing performance of the mobile hard disk 100 can be improved. Further, the first end cap 114 may be capped outside of the first liner 160. The first liner 160 may be provided with a first perforation at a location opposite the ventilation holes. For example, the air port of the heat radiation fan near the air vent may be hermetically connected with the wall of the first perforated hole.

In some embodiments, the removable hard disk 100 may further include a second liner 170. A second liner 170 may be disposed between the second end cap 115 and the body portion 113, the second liner 170 may seal the third opening. In this way, the sealing performance of the mobile hard disk 100 can be improved. Further, the second end cap 115 may be capped outside the second liner 170. For example, the second liner 170 may be integrally formed on the support 150. In other words, the bracket 150 and the second liner 170 may be a unitary structure. The portion of the second liner 170 opposite the through-hole 1151 may be provided with a second perforation. For example, the data transmission interface 141 may be sealingly connected to the wall of the second perforated hole.

It should be noted that in other embodiments, the housing 110 may have other configurations. For example, the casing may be formed by splicing an upper cover and a lower cover, the hard disk body 120 may be disposed in a sealed cavity enclosed by the upper cover and the lower cover, and the hard disk body 120 may be thermally connected to an inner wall of the upper cover. Further, a heat sink 112 may be provided at the outer side of the upper cover, and the heat sink 112 may be radiated by the heat sink 130.

Further, the housing may also include a top cover. The top cover is arranged above the upper cover, the top cover is covered outside the cooling fins 112, and the top cover provides protection for the cooling fins 112.

Further, the cavity wall of the accommodating cavity is respectively provided with a first air hole and a second air hole which are mutually communicated. The first air hole is an air inlet hole, the second air hole is an air outlet hole, and air entering the accommodating cavity through the first air hole can be discharged through the second air hole. The second air hole is an air inlet hole, the first air hole is an air outlet hole, and air entering the accommodating cavity through the second air hole can be discharged through the first air hole.

In some embodiments, the air inlet of the cooling fan is located in the accommodating cavity, and the air outlet of the cooling fan is connected with the second air hole. In this way, the second air hole may be formed as an air vent. When the cooling fan is in a working state, the cooling fan can extract gas from the accommodating cavity and discharge the gas through the second air hole. After the gas in the accommodating cavity is exhausted, a negative pressure area is formed in the accommodating cavity, and the gas in the environment can be supplemented into the accommodating cavity through the first gas hole. Therefore, the air in the environment can be supplemented into the accommodating cavity to absorb the heat on the radiating fins 112, and the radiating fans can discharge the heat outside the accommodating cavity to radiate the heat of the radiating fins 112.

In other embodiments, the air inlet of the cooling fan is connected to the second air hole, and the air outlet of the cooling fan is located in the accommodating cavity. Thus, the second air hole is formed as an air intake hole. Under the condition that the cooling fan is in a working state, the cooling fan can extract gas from the environment and discharge the gas into the accommodating cavity. After the gas in the environment is extracted from the accommodating cavity, a high-pressure area is formed in the accommodating cavity, so that the gas in the accommodating cavity is discharged to the environment through the first gas hole. Therefore, the heat dissipation of the heat dissipation plate 112 can be performed by pumping the air in the environment into the accommodating cavity, absorbing the heat on the heat dissipation plate 112, and discharging the air out of the accommodating cavity under the action of the air pressure in the accommodating cavity.

In some embodiments, an airflow zone is formed between the first air hole and the second air hole, and at least a portion of the heat sink 112 is located in the airflow zone. In this way, heat from the surface of the heat sink 112 may be better carried away by the air flow directly over the surface of the heat sink 112.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the embodiments of the application, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A removable hard disk comprising: a housing (110), a hard disk body (120), and a heat sink (130);

the shell (110) is provided with a sealing cavity, one side cavity wall of the sealing cavity is a heat conducting cavity wall (111), the hard disk body (120) is arranged in the sealing cavity, and the hard disk body (120) is in heat conducting connection with the heat conducting cavity wall (111);

the radiator (130) is arranged on the shell (110), the radiator (130) is arranged outside the sealing cavity, and the radiator (130) is used for radiating heat of the heat conducting cavity wall (111).

2. The mobile hard disk according to claim 1, wherein a receiving cavity is provided on a side of the heat conducting cavity wall (111) facing away from the sealing cavity, the heat conducting cavity wall (111) is provided with a plurality of heat radiating fins (112) extending toward the receiving cavity, and the heat radiator (130) is a heat radiating fan for radiating heat from the heat radiating fins (112).

3. The mobile hard disk of claim 2, wherein the housing (110) comprises a main body portion (113), a first end cap (114) and a second end cap (115),

the main body part (113) is of a tubular structure, the heat conducting cavity wall (111) positioned in the main body part (113) divides the main body part (113) into a first cavity (1131) and a second cavity (1132), the opposite ends of the first cavity (1131) are respectively provided with a first opening and a second opening,

the first end cover (114) seals the first opening, the second end cover (115) seals the second opening, the first lumen (1131) sealed by the first end cover (114) and the second end cover (115) forms the sealed cavity, and the second lumen (1132) forms the accommodating cavity.

4. A mobile hard disk according to claim 3, wherein the mobile hard disk further comprises a circuit board (140), the circuit board (140) is disposed in the sealed cavity, a data transmission interface (141) is disposed on the circuit board (140), and the hard disk body (120) is electrically connected with the data transmission interface (141);

one of the first end cover (114) and the second end cover (115) is provided with a through hole (1151), the data transmission interface (141) is inserted into the through hole (1151), and the data transmission interface (141) is in sealing connection with the hole wall of the through hole (1151).

5. A mobile hard disk according to claim 3, wherein a third opening and a fourth opening (1133) are respectively arranged at two opposite ends of the second pipe cavity (1132), the first end cover (114) also seals the third opening, a vent hole (1141) is arranged at a position of the first end cover (114) facing the second pipe cavity (1132), and the vent hole (1141) is communicated with the second pipe cavity (1132);

an air inlet of the cooling fan is positioned in the accommodating cavity, and an air outlet of the cooling fan is connected with the vent hole (1141); or, the air inlet of the cooling fan is connected with the vent hole (1141), and the air outlet of the cooling fan is positioned in the accommodating cavity.

6. The mobile hard disk of claim 5, wherein an air flow area is formed between the fourth opening (1133) and the vent hole (1141), and the heat sink (112) is at least partially located in the air flow area.

7. A mobile hard disk according to claim 3, wherein each of the heat radiating fins (112) extends along the extending direction of the main body portion (113), and an air flow passage is formed between adjacent heat radiating fins (112).

8. The mobile hard disk according to any one of claims 2 to 7, characterized in that the heat radiation fan is provided to the heat conduction cavity wall (111).

9. The mobile hard disk according to claim 8, wherein the heat conducting cavity wall (111) is provided with a recess (1111), the heat dissipating fan is disposed in the recess (1111), the housing of the heat dissipating fan protrudes out of the side surface of the heat conducting cavity wall (111) facing the sealing cavity, and the housing of the heat dissipating fan is in sealing connection with the side wall of the recess (1111).

10. The mobile hard disk according to claim 9, wherein the recess (1111) is recessed inward from the edge of the heat conducting cavity wall (111), the housing is provided with a groove (131), and the side wall of the recess (1111) is inserted into the groove (131).