CN201159999Y - mobile storage device - Google Patents

Abstract

A mobile storage device, which includes a storage module and a housing covering the storage module, the housing is provided with an opening, the storage module is provided with a plug that can protrude out of the housing, the mobile The storage device is also provided with a rotating mechanism installed at one end of the casing, the casing is provided with a holding part, and a limit block is arranged inside the holding part, and the rotating mechanism is provided with a mounting part fixed with the holding part, The mounting part is provided with a projection that can resist against the limit block to limit the rotation of the rotating mechanism, thereby effectively restricting the excessive rotation of the rotating mechanism.

Description

mobile storage device

【Technical field】

The utility model relates to a mobile storage device, in particular to a mobile storage device with a plug that can be retracted in a casing.

【Background technique】

With the vigorous development of the electronic information industry in recent years, all files such as music, picture files, news and other information will be effectively provided for download and use. Therefore, the demand for storing high-capacity data and files using small and easy-to-use media is rapidly increasing . Portable electronic product devices are widely used in combination with personal computers or their peripheral devices (such as printers) because they are easy for users to carry around. The data exchange transmission medium between devices can meet the above requirements. A common mobile storage device is mainly to arrange a data storage circuit inside a casing, and the circuit is connected with a signal connector that can relatively protrude from the opening of the casing. The common standard specification of this connector is the universal serial bus (Universal Serial Bus, USB).

From the user's point of view, in order to prevent the plug from being damaged by pressure, the internal contacts from being soiled, and the dust cover from being lost inadvertently, the industry has developed a mobile storage device with a plug that can be retracted in the housing. A key is arranged on one side of the storage circuit, and a notch for moving the key is arranged on the housing so that the plug can be pushed out of the housing by pushing the key. In order to meet the various needs of users, there is also a rotating mechanism to push the plug out of the housing by rotating a fixed angle. Generally speaking, a holding portion is provided at one end of the casing, and the rotating mechanism is provided with a mounting portion held in the casing, and the mounting portion is designed in an annular shape to facilitate rotation in the holding portion. The rotating mechanism is usually provided with a driving groove, one end of a push rod is installed in the rotating mechanism, and the other end opposite to it is connected with the data storage circuit board, and a screw tooth that can slide in the driving groove is arranged on the pushing rod, This causes the push rod to move to push the plug out of the housing. However, if the drive groove passes through one end of the rotating mechanism or communicates in the axial direction, then when the rotating mechanism rotates to impel the push rod to push the plug out of the housing, the rotating mechanism can continue to rotate to impel the push rod to push the plug to continue moving forward. , it is easy to cause damage to the shell or the plug; or the rotating mechanism is idling relative to the push rod, so that it will rotate more circles, then when the plug is returned to the shell, it must be turned more circles, causing the user's It is inconvenient, and it is easy to cause damage to the mobile storage device after repeated rotations and affect the use.

Therefore, it is necessary to transform this mobile storage device to overcome the above-mentioned defects.

【Content of utility model】

The purpose of the utility model is to provide a mobile storage device which can effectively control the rotation of the rotating mechanism.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a mobile storage device, which includes a storage module and a casing covering the storage module, an opening is provided on the casing, and a There is a plug that can protrude out of the housing. The mobile storage device is also provided with a rotating mechanism installed at one end of the housing. A holding part is provided on the housing. The rotating mechanism is provided with a mounting portion fixed to the holding portion, and the mounting portion is provided with a bump that can be opposed to a limit block to limit the rotation of the rotating mechanism.

Compared with the prior art, the utility model has the following beneficial effects: by setting a limit block in the holding part of the housing, the installation part of the rotating mechanism is provided with a bump that can resist the limit block, so that when the rotating mechanism Rotate in place, that is, after the plug protrudes out of the housing, the projection on the rotating mechanism is against the limit block in the housing, so that the rotating mechanism will not continue to rotate, which is convenient to use and will not damage the mobile storage device.

【Description of drawings】

Fig. 1 is a three-dimensional assembled view of the mobile storage device of the present invention.

Fig. 2 is a partial exploded view of the mobile storage device of the present invention.

Fig. 3 is a partial exploded view of another angle of the mobile storage device of the present invention.

FIG. 4 is a three-dimensional exploded view of the storage module of the mobile storage device of the present invention.

FIG. 5 is an exploded perspective view from another angle of the storage module of the mobile storage device of the present invention.

Fig. 6 is a three-dimensional schematic diagram of the push rod and the gear of the mobile storage device of the present invention.

7 is a three-dimensional schematic diagram of the first inner casing of the mobile storage device of the present invention.

Fig. 8 is a combined schematic view of the rotation mechanism of the mobile storage device of the present invention and the second inner casing.

9 is a perspective view of one body of the rotating mechanism in the mobile storage device of the present invention.

Fig. 10 is a perspective view from another angle of one body of the rotating mechanism in the mobile storage device of the present invention.

Fig. 11 is a front view of one body of the rotating mechanism in the mobile storage device of the present invention.

Fig. 12 is a partial schematic diagram of the mobile storage device of the present invention, showing the state that the plug is hidden in the casing.

Fig. 13 is a partial schematic view of the mobile storage device of the present invention, showing the state that the plug protrudes out of the housing.

【Detailed ways】

1 to 11, the mobile storage device 8 of the present invention includes a storage module 2 and a casing 1 covering the storage module 2. A push rod 3 is installed on the storage module 2, and the push rod 3 is installed on the storage module 2. A gear 4 is installed on the rod 3 , and a rotating mechanism 5 is installed at one end of the housing 1 . The storage module 2 includes a sliding body 20 movable along the housing 1 and a circuit board 21 held in the sliding body 20 . The circuit board 21 is provided with a plug 22 protruding out of the housing 1 .

The casing 1 includes an inner casing covering the storage module 2 and an outer casing covering the periphery of the inner casing. The inner casing includes a first inner casing 10 and a second inner casing 11 that are fastened to each other, and the second inner casing 11 is provided with two opposite second side walls 110 extending in the longitudinal direction, The second connecting wall 111 of the rotating mechanism 5 , the second abutting wall 112 opposite to the second connecting wall 111 , and the bottom wall 113 are connected. The longitudinal direction of the housing 1 is a first direction A, and the lateral direction of the housing 1 perpendicular to the first direction A is a second direction B. The inner sides of the second side wall 110 and the second connecting wall 111 respectively protrude toward the inside of the housing 1 with protrusions 1100 for buckling with the first inner housing 10 . The second inner casing 11 is provided with a holding portion for holding the rotating mechanism 5 . The retaining portion includes an annular wall 1110 recessed from the second connecting wall 111 and an abutting portion 1111 inside the annular wall 1110 . A limiting block 1113 protrudes inward from the abutting portion 1111 . A pair of grooves 1112 are formed on the upper end of the second connecting wall 111 to cooperate with the first inner casing 10 . A rectangular notch 1120 is formed on the second abutting wall 112 so that the plug 22 can protrude out of the housing 1 . When the plug 22 is hidden in the housing 1 , the end of the plug 22 overlaps the upper end of the notch 1120 .

The first inner casing 10 is provided with a pair of first side walls 100 docked with the second side wall 110, a first connecting wall 101 connected with the rotating mechanism 5, a first docking wall 102 opposite to the first connecting wall 101 and The top wall 103 opposite to the bottom wall 113 . The first side wall 100 and the first connecting wall 101 are respectively provided with a plurality of buckle parts 1000 that are engaged with the protruding parts 1100 on the second inner casing 11, and one of the first side walls 100 is inside A first rack 1002 extending inward is provided to cooperate with the gear 4 . Corresponding to the second inner housing 11 , the first inner housing 10 is also provided with a holding portion for installing the rotating mechanism 5 . The retaining portion includes an annular wall 1110 recessed from the first connecting wall 101 and an abutting portion 1111 located inside the annular wall 1110. A limiting block 1113 protrudes inwardly from the abutting portion 1111. The annular walls 1110 on the first and second inner housings 10 , 11 combine together to form a circular through hole for installing the rotating mechanism 5 . A pair of protrusions 1011 cooperating with the grooves 1112 on the second connecting wall 111 protrude from the upper end of the first connecting wall 101 . The first abutting wall 102 is also provided with a notch 1120 corresponding to the rectangular notch 1120 on the second abutting wall 112, and the rectangular notch 1120 on the first and second abutting walls 102, 112 forms a rectangular opening so that The plug 22 can protrude out of the housing 1 . A notch 114 is respectively formed on the first and second connecting walls 101 and 111 .

The outer casing includes a first outer casing 12 and a second outer casing 13 that are respectively attached to the first and second inner casings 10, 11, and the first and second outer casings 12, 13 are glued together. on the periphery of the first and second inner casings 10 and 11, thereby tightly holding the outer casing to the periphery of the inner casing.

The sliding body 20 is installed in the first inner casing 10 and the second inner casing 11 , and a memory chip (not shown) for storing external data may be disposed on the circuit board 21 . The sliding body 20 is rectangular and has a top wall 200 , two side walls 201 extending downward from the top wall 200 , and two end walls 202 connecting the two side walls 201 . The top wall 200 of the sliding body 20 is provided with a rectangular opening 2001; the side wall 201 is provided with a second rack 2011 opposite to the first rack 1002 on the first inner casing 10; , the two side walls 201 and the two end walls 202 are combined to form a receiving cavity 203 for accommodating the circuit board 21; a sliding part 2020 extends downward from the end wall 202 of the sliding body 20 away from the plug 22, and the other end wall 202 and the end of the side wall 201 overlap the upper end of the notch 1120, and the storage module 2 abuts against the inner side of the bottom wall 113 of the second inner casing 11 through the sliding part 2020 and slides along the first direction A to be exposed or hidden in the casing 1; extending downwards from the two side walls 201, a buckling portion 2010 is provided. When the circuit board 21 is installed in the receiving cavity 203, the buckling portion 2010 is buckled on the bottom of the circuit board 21 so as to secure the circuit The board 21 is fixed in the sliding body 20 , and the sliding of the sliding body 20 can drive the circuit board 21 to move, thereby driving the plug 22 to protrude or hide in the housing 1 . A limiting block 2012 is respectively provided on the outside of the two side walls 201 to prevent the storage module 2 from shaking left and right in the casing 1 .

The two ends of the push rod 3 are installed in the housing 1 and the rotating mechanism 5 respectively, and the push rod 3 is provided with a flat first part 30 installed in the opening 2001 and a cylindrical part installed in the rotating mechanism 5. The second part of 31. A pivot 300 protrudes from the end of the first part 30 away from the second part 31 , and the gear 4 is provided with a pivot hole 40 sleeved on the pivot 300 . Both sides of the gear 4 cooperate with the first rack 1002 on the first inner casing 10 and the second rack 2011 on the sliding body 20 respectively. The first part 30 is provided with a connecting part 301 connecting the second part 31. The connecting part 301 extends downward from the end of the flat first part 30 close to the second part 31. The plug 22 is hidden in the shell. When inside the body 1 , the connecting portion 301 abuts against one end of the sliding body 20 . The end of the second part 31 away from the first part 30 is symmetrically provided with a pair of sliders 310, and the sliders 310 are provided with two opposite abutting walls 3100, assuming that the axis center of the cylindrical second part 31 is X, the rotating mechanism 5 can rotate around the axis X to push the push rod 3 to move forward.

The rotating mechanism 5 is fixed in the holding portion, and the rotating mechanism 5 is formed by interlocking two substantially identical bodies 50 and 51 . The structure of the same part is as follows: the bodies 50, 51 are provided with docking surfaces 500 which are docked with each other, and the bodies 50, 51 are provided with hooks 5010 or holding grooves 5011 for interlocking the two bodies 50, 51 tightly. Buckle together. Both the bodies 50 and 51 include a driving part 501 for driving the push rod 3 to move and a mounting part 502 fixed in the holding part on the casing 1, and the mounting part 502 is designed in a semi-circular shape.

An assembly groove 503 extending along the first direction A is provided in the middle of the driving part 501 for mounting the second part 31 of the push rod 3 , and the assembly groove 503 communicates with the installation parts 502 of the two bodies 50 , 51 . The assembly groove 503 is arranged in an arc shape corresponding to the structure of the second part 31 of the push rod 3 . The fitting groove 503 on the driving part 501 is recessed with a driving groove 504 for driving the sliding block 310 to slide, that is, the driving groove 504 does not penetrate through the main body 50 or the main body 51 along the first direction A. The driving groove 504 is provided with opposite side walls 5040, and the projections of the two side walls 5040 along the thickness direction of the body 50 do not fall into the driving groove 504, which is designed in this way to facilitate the molding process of the two bodies 50, 51. The mold (not shown) is convenient to be drawn out along the thickness direction of the main body 50 , 51 without damaging the sidewalls 5040 of the driving groove 504 , thereby improving the yield of the main body 50 , 51 . When the two bodies 50 , 51 are fastened together, the driving grooves 504 in the two bodies 50 , 51 combine to form a helical groove (not labeled) for driving the slider 310 to rotate relative to the rotating mechanism 5 . During the rotation of the rotating mechanism 5 to push the push rod 3 to move, the slider 310 has at least two opposite abutment walls 3100 against the two opposite side walls 5040 of the driving groove 504, so that the push rod 3 is easily It can move in the driving slot 504 without affecting the use due to the change of the driving slot 504 .

The two sidewalls 5040 of the drive slot 504 close to the housing 1 form two opposing stop surfaces 5041 respectively abutting against two ends of the slider 310 along the first direction A. As shown in FIG. The stop surface 5041 communicates with the docking surface 500, and the two stop surfaces 5041 are parallel to each other and perpendicular to the forward and backward movement direction of the push rod 3, so that after the plug 22 protrudes out of the housing 1, the slider The two ends of the slider 310 along the first direction A are against the stop surface 5041, and the plug 22 is pressed without causing the slider 310 to shake back and forth to affect the connection with the docking device (not shown), and the plug 22 will not Back into housing 1. A limiting portion 5001 is recessed from the butt joint surface 500 of the body 50 and the body 51 opposite to the end of the driving groove 504 on the body 50 and the body 51, and can be resisted by one end of the slider 310 along the axial direction. The limiting portion 5001 communicates with the end of the drive groove 504 on the other body 51 or 50 close to the housing 1, that is, when the two bodies 50, 51 are fastened together, the limiting portion 5001 is located on the other body 51 , 50 at the ends of the driving groove 504 , the limiting portion 5001 is perpendicular to the axial direction of the slider 310 rotating. Therefore, after the push rod 3 moves to the position and the plug 22 protrudes out of the housing 1, one end of the slider 310 along the axial direction of the push rod 3 is abutted against the stopper 5001, and the push rod 3 will not continue Rotate along its axis. Both the bodies 50, 51 are provided with a mounting surface 505 that is docked with the connecting walls 101, 111 on the housing 1, and the mounting surface 505 is provided with a notch 114 that matches the connecting walls 101, 111. The protruding point 5050, so that when the rotating mechanism 5 is rotated to make the push rod 3 push the plug 22 to protrude out of the housing 1, the slider 310 is against the stop surface 5041, the protruding point 5050 is accommodated in the notch 114, and the plug 22 The plug connection will not cause the plug 22 to be pressed back into the housing 1 .

The mounting parts 502 of the bodies 50, 51 are respectively installed in the holding parts on the housing 1, and a rib 5020 protrudes outward from the end of the mounting parts 502 close to the housing 1 along its circumferential direction. The annular wall 1110 is clamped and fixed between the rib 5020 on the installation part 502 and the installation surface 505, and the rib 5020 is buckled on the inner side of the first and second connecting walls 101, 111 and located at the abutting part 1111, so that the rotating mechanism 5 is installed on the housing 1. In addition, the butt surface 500 at the mounting portion 502 of the two bodies 50, 51 is respectively provided with a groove 5002 and a protrusion 5003 that cooperate with each other. When the two bodies 50 are fastened together, the mounting portion 502 forms a complete circle. The shape is installed in the holding part on the housing 1 to facilitate the rotation of the rotating mechanism 5 around the axis X. In addition, a mounting groove 506 is respectively provided on both sides of the body 50, and a pair of accessories 6 are respectively held in the mounting groove 506. Two ends of a lanyard (not shown) can be respectively fixed on the accessories 6 to facilitate the user to carry. A stopper 5060 protrudes inward from the inner wall of the installation groove 506 to prevent the accessory 6 from sliding out along the first direction A. As shown in FIG.

The difference is that: an arc-shaped protrusion 5021 protrudes along the first direction A from the installation portion 502 of the body 51 . When the plug 22 is hidden in the housing 1, one end of the protrusion 5021 in the circumferential direction is abutted against the stopper 1113 on the second inner housing 11 to prevent the user from rotating the plug in the opposite direction when using it. Rotation mechanism 5; when the plug 22 is pushed out of the housing 1, the other end of the protrusion 5021 along the circumferential direction is abutted against the limit block 1113 on the first inner housing 11 to prevent excessive rotation of the rotation mechanism 5 , to avoid damage to the utility model mobile storage device 8, and easy to use.

When assembling, first install the push rod 3 in one of the bodies 51 of the rotating mechanism 5 and buckle the other body 50 on it, the slider 310 on the push rod 3 is located in the drive groove 504, and at the same time The fittings 6 are installed on both sides of the body 50, 51 respectively; secondly, the gear 4 is sleeved on the pivot 300 on the push rod 3 and installed in the first inner casing 10, at this time, the gear 4 is engaged with the first rack 1002 on the first inner casing 10; the storage module 2 is installed in the first inner casing 10 again, and the first part 30 of the push rod 3 is located in the storage module In the opening 2001 of group 2, the other side of the gear 4 is engaged with the second rack 2011 on the storage module 2; at this time, the second inner casing 11 is buckled on the first inner casing 10; finally The first and second outer casings 12 and 13 are respectively pasted on the periphery of the first and second inner casings 10 and 11 to form a mobile storage device 8 of the utility model.

As shown in Figure 1, Figure 12 and Figure 13, the mobile storage device 8 push rod 3 of the utility model pushes the motion state diagram of the plug 22 hidden in or protruding from the housing 1, when the plug 22 is hidden in the housing 1, the The slider 310 on the push rod 3 is located at one end of the spiral groove (not labeled) away from the housing 1. At this time, one side of the gear 4 is away from the first rack 1002 on the first inner housing 10. One end of the plug 22 is engaged, and the other side of the gear 4 is engaged with the end of the second rack 2011 on the storage module 2 close to the plug 22 .

Because the rotating mechanism 5 in the mobile storage device 8 of the present invention is fixed in the casing 1, and the rotating mechanism 5 cannot move along the first direction A relative to the casing 1, the rotating mechanism 5 is rotated around the axis X, so The slider 310 on the push rod 3 moves forward relative to the housing 1 along the first direction A along the spiral groove (not labeled) in the rotating mechanism 5 , and at the same time, the push rod 3 drives the gear 4 to move forward. Since the housing 1 is stationary relative to the rotating mechanism 5 along the first direction A, the first rack 1002 is stationary relative to the rotating mechanism 5 along the first direction A; the storage module 2 is located in the housing 1 inside but not fixed with the housing 1, that is, the storage module 2 can move along the first direction A relative to the housing 1, and the other side of the gear 4 is connected to the second rack 2011 on the storage module 2 The gear 4 is engaged with the first rack 1002 on one side to be stationary, while the second rack 2011 engaged with the other side will generate transmission according to the movement of the gear 4, and the push rod 3 will drive When the gear 4 moves forward, the gear 4 can rotate forward along the first rack 1002. At the same time, the rotation of the gear 4 will drive the second rack 2011 to drive forward, and the storage module 2 will move forward to drive the plug 22 moves forward relative to the housing 1 . When the rotating mechanism 5 rotates 180 degrees clockwise around the axis X, the plug 22 can completely protrude out of the casing 1, and the two ends of the slider 310 along the first direction A are respectively held against the end of the spiral groove. on the stop surface 5041 to prevent the slider 310 from moving forward or backward.

Because the first rack 1002 is stationary and one side of the gear 4 rotates along the first rack 1002, the first rack 1002 can be used as the axis of motion for the forward movement of the gear 4, assuming that the direction of motion of the push rod 3 passes through the gear 4, then this point is the same as the movement speed and movement stroke of the push rod 3 along the first direction A. Assuming that the distance between this point and the first rack 1002 along the second direction B is r, that is, the distance between this point and the center of the motion axis is r, and the other side of the gear 4 matched with the second rack 2011 is connected to the motion axis. The distance between the shaft centers is n times of the distance r, and the moving speed at this point on the gear 4 is v, and the moving time is t. According to the linear velocity formula of the circular moving object: v=2πr/t, then it can be Draw the speed of motion on the other side of the gear 4 that is matched with the second tooth bar 2011 to be n times of the speed of motion at this point; It is obtained that the stroke of the second gear rack 2011 driven by the other side of the gear 4 is n times of the movement stroke of the point along the first direction A, that is, n times of the movement distance of the push rod 3 along the first direction A, so that the storage The moving distance of the module 2 along the first direction A is effectively enlarged, thereby reducing the force for pushing the push rod 3 to move.

The moving direction of the push rod 3 in the mobile storage device 8 of the present utility model is to pass through the center G of the gear 4, that is, the point is the center G of the gear 4, and if the distance between the center G of the gear 4 and the center of motion is R, then the gear 4 The speed v=2πR/t at the center G of the circle moving forward; and the distance between the other side of the gear 4 and the center of motion is 2R, then the linear velocity of the other side of the gear 4 moving forward is at the center G of the gear 4 2 times of the moving speed, and the speed at which the other side of the gear 4 drives the second rack 2011 to move forward is also 2 times of the moving speed at the center G of the circle. In the mobile storage device 8 of the present utility model, the rotation mechanism 5 is rotated clockwise 180 degrees around the axis X, and the push rod 3 can move along the first direction with a stroke of S, so that the gear 4 cooperates with the second rack 2011. One side drives the second rack 2011 to move forward with a stroke of 2S, so that the motion stroke of the storage module 2 is effectively enlarged. At this time, the plug 22 can be completely protruded out of the housing 1 to facilitate the connection with the docking connector (not shown in the figure). shown) to plug in. That is, as long as a small force is applied to push the push rod 3 forward, the storage module 2 can be moved a relatively large distance, thereby driving the plug 22 to protrude out of the housing 1 .

In addition, when the rotating mechanism 5 is rotated 180 degrees around the axis X, the push rod 3 moves along the spiral groove (not shown) in the opposite direction to the first direction A, thereby driving the storage module 2 back to the housing 1, at this time, the plug 22 is hidden in the casing 1 to provide good dustproof protection.

Admittedly, the push rod 3 on the mobile storage device 8 of the present utility model can also be formed by extending from one end of the rotating mechanism 5, and is designed in a bolt shape, and the through hole on the housing 1 can be formed into a screw hole, then the The push rod 3 can rotate around the axis X in the screw hole and move forward to push the storage module 2 to move relative to the housing 1, that is, to drive the plug 22 to protrude or hide in the housing 1 to provide good dustproof protection .

Thus it can be concluded that: first, the mobile storage device 8 of the present utility model rotates the rotating mechanism 5 at a certain angle around the axis X, and rotates 180 degrees in a preferred embodiment of the present utility model, so that the push rod 3 can be pushed to simultaneously drive the storage The module 2 and its plug 22 protrude or hide in the housing 1, so that when people use this kind of mobile storage device 8, the plug 22 can be pushed out and connected to a docking device (not shown), and when not in use Then it can be retracted into the housing 1, and the user can conveniently control the rotation angle and use force, so as to achieve good dustproof protection for the plug 22 without using any additional dustproof accessories, and it is convenient Carry; Second, the first rack 1002 arranged on the first inner casing 10 is relatively stationary, while the second rack 2011 arranged on the storage module 2 can move relatively, so that the push rod 3 and the gear 4 and the first rack 1002 in the first inner casing 10 that cooperates with the two sides of the gear 4 and the second rack 2011 on the storage module 2 are combined to form a stroke amplification mechanism, and only a small force needs to be applied Push the push rod 3 for a small distance, so that the gear 4 can drive the storage module 2 to move a relatively large distance through the transmission of the second rack 2011, and then the plug 22 can move a relatively large distance to be exposed or hidden in the housing 1; the third . By setting a limit block 1113 in the holding part of the housing 1, the installation part 502 of the rotation mechanism 5 is provided with a protrusion 5021 that can resist the limit block 1113, so that when the rotation mechanism 5 pushes the push rod 3 to rotate in place, That is, after the plug 22 protrudes out of the housing 1, the protrusion 5021 on the rotating mechanism 5 is against the limit block 1113 in the housing 1, so that the rotating mechanism 5 will not continue to rotate, which is convenient for use and will not damage the Removable storage device 8.

Claims (10)

1. A mobile storage device, comprising a storage module and a housing covering the storage module, the housing is provided with an opening, and the storage module is provided with a plug that can protrude from the housing, its It is characterized in that: the mobile storage device is also provided with a rotating mechanism installed at one end of the casing, the casing is provided with a holding part, and a limit block is arranged inside the holding part, and the rotating mechanism is provided with the holding part The installation part is fixed to each other, and the installation part is provided with a protrusion that can be opposed to the limit block to limit the rotation of the rotating mechanism. 2 . The mobile storage device according to claim 1 , wherein a rib extending outward is provided on the installation portion, and the projection is formed by extending from the rib toward the opening. 3 . 3. The mobile storage device according to claim 2, characterized in that: the housing is provided with a connecting wall connected to the rotating mechanism, the rotating mechanism is provided with a mounting surface docked with the connecting wall, and the holding part includes a self-supporting wall. An annular wall formed by depressions on the connecting wall, the annular wall is clamped between the installation surface and the rib. 4. The mobile storage device according to claim 3, characterized in that: the holding part further includes abutting parts located inside the annular wall, the ribs are installed between the abutting parts, and the limiting block The abutting portion protrudes toward the inner side of the holding portion. 5 . The mobile storage device according to claim 3 , wherein a protruding point is provided on the mounting surface, and a notch cooperating with the protruding point is provided on the connecting wall to locate the rotating mechanism. 6 . 6. The mobile storage device according to claim 1, wherein the housing comprises a first inner housing and a second inner housing interlocked, and the first inner housing and the second inner housing The body is respectively provided with a buckle part and a protruding part which are interlocked with each other. 7. The mobile storage device according to claim 6, characterized in that: the first inner casing and the second inner casing are provided with the holding part and the limit block, and the limit block is respectively connected to The two ends of the bump are against each other. 8. The mobile storage device according to claim 1, characterized in that: the mobile storage device is further provided with a push rod, and the push rod includes a first part connected to the storage module and a second part installed in the rotating mechanism . 9 . The mobile storage device according to claim 8 , wherein a spiral groove is provided in the rotating mechanism, and a slider is provided on the second part of the push rod to slide along the spiral groove. 10 . 10. The mobile storage device according to claim 1, wherein the storage module comprises a sliding body and a circuit board fixed on the sliding body, and the plug is formed on the circuit board.

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