Storage type mobile power supply with stable installation

Abstract

The utility model relates to the technical field of mobile power supplies, and particularly discloses a storage type mobile power supply stable in installation, an installation cavity comprises a first installation cavity and a second installation cavity which are adjacent to each other, a telescopic brake module and a circuit board module are accommodated in the first installation cavity, and a battery module is accommodated in the second installation cavity; a charging wire is wound on the telescopic braking module, the input end of the charging wire is connected with the circuit board module, the output end of the charging wire is exposed out of the mounting cavity, and the battery module is electrically connected with the circuit board module; foam rubber is filled between the battery module and the inner wall of the second mounting cavity; according to the utility model, different modules are respectively limited and installed, the circuit board module is separated from the battery module, short circuit caused by excessive contact is avoided, the foam rubber is arranged to play a role in buffering and protecting the battery module, and the installation stability and the use safety are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, and in particular to a storage-type mobile power supply with stable installation. Background Art

[0002] In order to facilitate carrying and use of charging cables and improve the convenience of consumers when using, existing mobile power supplies integrate charging cables into the mobile power supply. When charging is needed, the charging cable only needs to be pulled out from the mobile power supply. When charging is not needed, the charging cable can be stored in the mobile power supply.

[0003] In actual research, it was found that the mobile power supplies on the market integrate the circuit board module, battery module and the module structure for storing the charging cable inside the mobile power supply, and there is no good installation limit. When the mobile power supply falls or collides, the module structures are prone to interfere with each other, resulting in abnormal noise or short circuit during use, making it difficult to ensure the safety of use. Utility Model Content

[0004] In response to the above-mentioned problems of unstable internal installation of mobile power supplies and difficulty in ensuring safe use, the utility model provides a storable mobile power supply with stable installation, in which different modules are installed with limited positions respectively, and the circuit board module is isolated from the battery module to avoid short circuit caused by excessive contact, and foam glue is provided to provide buffering protection for the battery module, thereby effectively improving the stability of installation and the safety of use.

[0005] In order to solve the above technical problems, the specific solutions provided by the utility model are as follows:

[0006] A stably installed retractable mobile power source comprises an upper shell cover and a lower shell cover which are snap-fitted together, an installation cavity is arranged between the upper shell cover and the lower shell cover, the installation cavity comprises a first installation cavity and a second installation cavity which are arranged adjacently, a telescopic brake module and a circuit board module are arranged in the first installation cavity, and a battery module is arranged in the second installation cavity;

[0007] A charging line is wound around the telescopic brake module, an input end of the charging line is connected to the circuit board module, an output end of the charging line is exposed outside the installation cavity, and the battery module is electrically connected to the circuit board module;

[0008] Foam glue is filled between the battery module and the inner wall of the second installation cavity.

[0009] In some embodiments, the first installation cavity includes a first upper cover and a first lower cover that are snap-fitted together, and the first lower cover is connected to the upper surface of the lower cover of the shell to achieve limited installation of the telescopic brake module and the circuit board module and improve installation stability.

[0010] In some embodiments, the telescopic brake module includes a rotating shaft, a winding drum, a clockwork spring, and a brake assembly;

[0011] The two ends of the rotating shaft are respectively fixedly connected to the first upper cover and the first lower cover, the charging cable is wound on the cable reel, and the cable reel rotates around the rotating shaft;

[0012] The brake assembly is connected to the cable reel and is used to brake the rotation of the cable reel. The cable reel is provided with a mounting groove for accommodating the clockwork spring.

[0013] The clockwork spring is connected to the charging cable and is used to retract the charging cable and wind it around the cable reel, thereby achieving the extension and braking effects on the charging cable.

[0014] In some embodiments, a cover plate is snap-fitted and connected at the notch of the mounting slot, and the brake assembly is connected to the cover plate to ensure the installation stability of the clockwork spring and provide a mounting surface for the linkage between the brake assembly and the cable reel.

[0015] In some embodiments, a plurality of first card slots are provided at the edge of the slot of the mounting slot, and a first card block for matching with the plurality of first card slots is provided at the edge of the cover plate, thereby realizing a detachable connection and an alignment connection between the mounting slot and the cover plate, and providing stability and convenience of installation.

[0016] In some embodiments, the first upper cover is provided with a first positioning portion for positioning the first end of the rotating shaft, and the first lower cover is provided with a second positioning portion for positioning the second end of the rotating shaft, thereby ensuring the installation stability of the rotating shaft and improving the stability of the telescopic effect of the charging cable.

[0017] In some embodiments, the circuit board module includes a first circuit board and a conductive terminal, the conductive terminal is located between the first circuit board and the cable reel, and the conductive terminal is disposed on the cable reel;

[0018] The first circuit board is provided with a power rail, which is distributed around the rotation path of the conductive terminal. The conductive terminal is in sliding contact with the power rail to realize the power supply function of the charging cable.

[0019] In some embodiments, the first lower cover is provided with a plurality of positioning posts for positioning the first circuit board, and the first circuit board is provided with positioning holes for matching with the plurality of positioning posts, thereby improving the installation stability of the first circuit board and further improving the overall installation stability of the mobile power supply.

[0020] In some embodiments, a second card block is provided at the edge of the upper cover of the shell, and a second card slot for matching with the second card block is provided at the edge of the lower cover of the shell, so as to facilitate the disassembly and assembly of the upper cover and the lower cover of the shell and improve the accuracy of the alignment installation.

[0021] In some embodiments, a receiving groove for accommodating the output end of the charging cable is provided on the upper cover or the lower cover of the housing, which serves to store the charging cable exposed outside the installation cavity, thereby improving the appearance and protecting the charging cable.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a stably installed storable mobile power supply, in which the installation cavity between the upper cover of the shell and the lower cover of the shell is set as a first installation cavity and a second installation cavity, so that the telescopic brake module and the circuit board module are accommodated in the first installation cavity, and the battery module is accommodated in the second installation cavity, thereby achieving the effect of limiting the installation of different modules respectively, and when the mobile power supply falls and collides, the internal modules can be prevented from shifting, thereby effectively improving the stability of the installation; and the circuit board module is isolated from the battery module, which can avoid short circuit caused by excessive contact, and the foam glue is provided to play a buffering and protective role for the battery module, thereby effectively improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a stably installed retractable mobile power supply provided in an embodiment of the utility model;

[0024] Figure 2 An exploded view of a stably installed retractable mobile power supply provided in an embodiment of the utility model;

[0025] Figure 3 A cross-sectional view of a stably installed retractable mobile power supply provided in an embodiment of the utility model;

[0026] 1-housing upper cover; 11-second card block;

[0027] 2-housing lower cover; 21-second card slot;

[0028] 3-installation cavity; 31-first installation cavity; 311-first upper cover; 3111-first positioning portion; 312-first lower cover; 3121-second positioning portion; 32-second installation cavity;

[0029] 4- telescopic brake module; 41- rotating shaft; 42- cable reel; 43- brake assembly; 44- mounting slot;

[0030] 5-circuit board module; 51-first circuit board; 511-positioning hole; 52-conductive terminal;

[0031] 6-Battery module;

[0032] 7-Charging cable;

[0033] 8- Foam glue;

[0034] 9-cover plate; 91-first card block;

[0035] 10-Accommodation slot. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0038] For example, a stably installed storable mobile power source comprises an upper shell cover and a lower shell cover that are snap-fitted together, an installation cavity is arranged between the upper shell cover and the lower shell cover, the installation cavity comprises a first installation cavity and a second installation cavity that are adjacently arranged, a telescopic braking module and a circuit board module are accommodated in the first installation cavity, and a battery module is accommodated in the second installation cavity; a charging cable is wrapped around the telescopic braking module, an input end of the charging cable is connected to the circuit board module, and an output end of the charging cable is exposed outside the installation cavity, and the battery module is electrically connected to the circuit board module; foam glue is filled between the battery module and the inner wall of the second installation cavity.

[0039] The present embodiment provides a stably installed storable mobile power source, in which the installation cavity between the upper cover and the lower cover of the shell is set as a first installation cavity and a second installation cavity, so that the telescopic brake module and the circuit board module are accommodated in the first installation cavity, and the battery module is accommodated in the second installation cavity, so as to achieve the effect of respectively limiting the installation of different modules. When the mobile power source falls and collides, the internal modules can be prevented from shifting, thereby effectively improving the stability of the installation; and the circuit board module is isolated from the battery module, so as to avoid short circuit caused by excessive contact, and the foam glue is provided to play a buffering and protective role on the battery module, thereby effectively improving the safety of use.

[0040] Embodiment 1:

[0041] like Figure 1 and Figure 2 As shown, a stably installed storable mobile power source has a retractable charging cable 7 stored inside, which can be used to power electronic devices, including a shell upper cover 1 and a shell lower cover 2 that are snap-fitted together, and the edge of the shell upper cover 1 is adapted to the edge of the shell lower cover 2 to ensure the stability of the snap-fit ​​connection between the shell upper cover 1 and the shell lower cover 2. The outer shape structure of the shell upper cover 1 and the shell lower cover 2 is not limited and can be adjusted according to different appearance design requirements.

[0042] An installation cavity 3 is arranged between the upper cover 1 of the shell and the lower cover 2 of the shell, that is, after the upper cover 1 of the shell and the lower cover 2 of the shell are buckled and connected together, an installation cavity 3 is formed between the upper cover 1 of the shell and the lower cover 2 of the shell, and the installation cavity 3 includes a first installation cavity 31 and a second installation cavity 32 which are adjacently arranged. It can be understood that the first installation cavity 31 and the second installation cavity 32 are separated by a separation design, that is, the first installation cavity 31 and the second installation cavity 32 are isolated from each other, and a telescopic braking module 4 and a circuit board module 5 are arranged in the first installation cavity 31, and a battery module 6 is arranged in the second installation cavity 32, the telescopic braking module 4 is used to realize the telescopic and braking effects on the charging line 7, and the circuit board module 5 is used to establish an electrical connection relationship between the charging line 7 and the battery module 6, the charging function of the mobile power supply, and the display function or lighting function, etc.

[0043] Among them, the telescopic brake module 4 is wrapped with a charging cable 7, the input end of the charging cable 7 is connected to the circuit board module 5, the output end of the charging cable 7 is exposed outside the installation cavity 3, the battery module 6 is electrically connected to the circuit board module 5, and the input end of the charging cable 7 establishes a connection relationship with the battery module 6 through the circuit board module 5, so that the charging cable 7 can supply power to the electronic device that needs to be charged through its output end. Here, the output end is exposed outside the installation cavity 3, which is convenient for charging the electronic device.

[0044] When charging is not required, most of the charging cable 7 is wound around the telescopic brake module 4, that is, except for the input and output ends of the charging cable 7, the wires at the input and output ends of the charging cable 7 are wound around the telescopic brake module 4, while the output end of the charging cable 7 is exposed outside the installation cavity 3; when charging is required, the output end of the charging cable 7 is pulled, thereby driving the wires of the charging cable 7 to extend out of the installation cavity 3. When it is stretched to a certain length and meets the charging requirements, the telescopic brake module 4 brakes the charging cable 7 under the loss of external force, that is, ensuring that the position of the charging cable 7 does not change. When charging is completed, the output end of the charging cable 7 is detached from the electronic device, and under the action of an external force, the charging cable 7 is retracted to the inside of the installation cavity 3 under the action of the telescopic brake module 4, that is, it is stored and wound around the telescopic brake module 4.

[0045] It should be noted that the telescopic brake module 4 can be understood by referring to the automatic telescopic brake principle of a traditional cable reel or a retractable mobile power source. In this example, the design is mainly for the installation stability inside the retractable mobile power source. Therefore, the principle of the telescopic brake module 4 is not introduced in detail.

[0046] In this example, foam glue 8 is filled between the battery module 6 and the inner wall of the second installation cavity 32. The foam glue 8 can provide buffering protection for the battery module 6 when the mobile power supply falls or collides, thereby preventing damage to the battery module 6. At the same time, it can also ensure the installation adaptability and stability of the battery module 6 in the second installation cavity 32, thereby improving the overall installation stability of the mobile power supply.

[0047] In this example, a stably installed storable mobile power supply is provided, in which the installation cavity 3 between the upper cover 1 and the lower cover 2 of the shell is set as a first installation cavity 31 and a second installation cavity 32, so that the telescopic brake module 4 and the circuit board module 5 are accommodated in the first installation cavity 31, and the battery module 6 is accommodated in the second installation cavity 32, so as to achieve the effect of limiting the installation of different modules respectively. When the mobile power supply falls and collides, the internal modules can be prevented from shifting, thereby effectively improving the stability of the installation; and the circuit board module 5 is isolated from the battery module 6, which can avoid short circuit caused by excessive contact, and the foam glue 8 is provided to play a buffering and protective role on the battery module 6, thereby effectively improving the safety of use.

[0048] Embodiment 2:

[0049] In this example, refer to Figure 2 and Figure 3 The first installation cavity 31 includes a first upper cover 311 and a first lower cover 312 that are snap-fitted together. The first lower cover 312 is connected to the upper surface of the lower cover 2 of the shell to achieve limited installation of the telescopic brake module 4 and the circuit board module 5 and improve the stability of the installation.

[0050] During installation, the telescopic brake module 4 and the circuit board module 5 can be placed on the first lower cover 312 first, and then the first upper cover 311 can be snapped and connected to the first lower cover 312, thus completing the assembly work of installing the telescopic brake module 4 and the circuit board module 5 in the first installation cavity 31, which has a stable limiting effect on the telescopic brake module 4 and the circuit board module 5.

[0051] Specifically, the telescopic brake module 4 includes a rotating shaft 41, a cable reel 42, a clockwork spring and a brake assembly 43. The two ends of the rotating shaft 41 are respectively fixedly connected to the first upper cover 311 and the first lower cover 312. The charging cable 7 is wound around the cable reel 42, and the cable reel 42 rotates around the rotating shaft 41. The rotating shaft 41 is fixedly installed so that the cable reel 42 can stably rotate around the rotating shaft 41. It can be understood that the cable reel 42 can rotate around the rotating shaft 41 when the output end of the charging cable 7 is pulled externally, so that the wire portion of the charging cable 7 can be detached from the cable reel 42 and exposed outside the installation cavity 3. Similarly, when charging is not needed, the cable reel 42 rotates around the rotating shaft 41, so that the charging cable 7 can be retracted and wound on the cable reel 42.

[0052] For ease of understanding, it is set here that when charging is required, when the output end of the charging cable 7 is pulled externally, the cable reel 42 rotates counterclockwise around the rotating axis 41. When charging is not required, the charging cable 7 can be retracted and wound on the cable reel 42 when the cable reel 42 rotates clockwise around the rotating axis 41.

[0053] Among them, the brake component 43 is connected to the cable reel 42 and is used to brake the rotation of the cable reel 42. That is, when the user pulls out the charging cable 7 to a certain length, the brake component 43 can stop the rotation of the cable reel 42, thereby positioning the pulled-out length of the charging cable 7. The cable reel 42 is provided with a mounting groove 44 for accommodating a clockwork spring. The clockwork spring is connected to the charging cable 7 and is used to retract the charging cable 7 and wind it around the cable reel 42, thereby realizing the extension and braking of the charging cable 7.

[0054] When charging operation is required, the output end of the charging cable 7 is pulled by external force, so that the wire part of the charging cable 7 is subjected to tension and exposed outside the installation cavity 3, and the tension is greater than the elastic force of the clockwork spring; when charging operation is not required, the wire part of the charging cable 7 is pulled back and wound on the winding reel 42 with the help of the elastic force recovery effect of the clockwork spring itself, thereby realizing the storage of the charging cable 7.

[0055] In some embodiments, a cover plate 9 is snap-fittedly connected to the slot of the mounting slot 44, and the brake assembly 43 is connected to the cover plate 9, thereby ensuring the installation stability of the clockwork spring and providing a mounting surface for the linkage between the brake assembly 43 and the cable reel 42. That is, through the snap-fit ​​connection between the cover plate 9 and the mounting slot 44, the cover plate 9 can rotate with the cable reel 42, and the brake assembly 43 is connected to the cover plate 9. Therefore, the brake assembly 43 can be linked with the rotation of the cover plate 9 to achieve a braking effect on the cable reel 42.

[0056] A plurality of first card slots are arranged at the edge of the slot of the mounting slot 44, and a first card block 91 for matching with the plurality of first card slots is arranged at the edge of the cover plate 9, so as to realize a detachable connection and an alignment connection between the mounting slot 44 and the cover plate 9, and provide stability and convenience of installation.

[0057] For example, the number of the first card slots and the number of the first card blocks 91 are both four, and the four first card slots are evenly spaced at the slot edges of the mounting slot 44. Correspondingly, the positions of the four first card blocks 91 match the four first card slots one by one, thereby realizing a detachable connection and a registration connection between the mounting slot 44 and the cover plate 9. It can be understood that the specific number and position of the first card slots and the first card blocks 91 are not restricted in this example, and are adjusted according to actual design requirements.

[0058] A first positioning portion 3111 for positioning the first end of the rotating shaft 41 is provided on the first upper cover 311, and a second positioning portion 3121 for positioning the second end of the rotating shaft 41 is provided on the first lower cover 312. The two ends of the rotating shaft 41 are positioned respectively by the first positioning portion 3111 and the second positioning portion 3121 to ensure the installation stability of the rotating shaft 41, so as to improve the stability of the telescopic effect of the charging cable 7.

[0059] For example, the rotating shaft 41 is a cylindrical structure, the first positioning portion 3111 and the second positioning portion 3121 are both formed as a groove structure, and the two ends of the rotating shaft 41 are respectively inserted into the first positioning portion 3111 and the second positioning portion 3121 to achieve the positioning and installation effect of the rotating shaft 41.

[0060] Embodiment three:

[0061] In this example, reference Figure 2 The circuit board module 5 includes a first circuit board 51 and a conductive terminal 52 . The conductive terminal 52 is located between the first circuit board 51 and the cable reel 42 , and the conductive terminal 52 is arranged on the cable reel 42 , that is, the conductive terminal 52 can rotate with the cable reel 42 .

[0062] A power rail is provided on the first circuit board 51 and is distributed around the rotation path of the conductive terminal 52 . When the conductive terminal 52 rotates along with the cable reel 42 , the conductive terminal 52 can slide in contact with the power rail to realize the power supply of the charging cable 7 .

[0063] A plurality of positioning posts for positioning the first circuit board 51 are provided on the first lower cover 312 , and positioning holes 511 for matching with the plurality of positioning posts are provided on the first circuit board 51 , thereby improving the installation stability of the first circuit board 51 and further improving the overall installation stability of the mobile power supply.

[0064] For example, the number of the positioning posts and the number of the positioning holes 511 are both four, and the four positioning posts are evenly spaced and distributed on the first lower cover 312. Correspondingly, the positions of the four positioning holes 511 match the four positioning posts one by one, thereby achieving a stable installation effect on the first circuit board 51. It can be understood that the specific number and position of the positioning posts and the positioning holes 511 are not limited in this example, and are adjusted according to actual design requirements.

[0065] A second card block 11 is arranged at the edge of the upper cover 1 of the shell, and a second card slot 21 for matching with the second card block 11 is arranged at the edge of the lower cover 2 of the shell. Through the matching connection relationship between the second card block 11 and the second card slot 21, it is convenient to disassemble and assemble the upper cover 1 and the lower cover 2 of the shell, and the accuracy of the alignment installation is improved.

[0066] A receiving groove 10 for receiving the charging cable 7 is provided on the upper cover 1 or the lower cover 2 of the housing. The receiving groove 10 receives the output end of the charging cable 7 exposed outside the mounting cavity 3, thereby improving the appearance and protecting the charging cable 7.

[0067] In summary, the utility model provides a storable mobile power supply with stable installation, in which the installation cavity between the upper cover and the lower cover of the shell is set as a first installation cavity and a second installation cavity, so that the telescopic brake module and the circuit board module are accommodated in the first installation cavity, and the battery module is accommodated in the second installation cavity, thereby achieving the effect of limiting the installation of different modules respectively, and can prevent the internal modules from shifting when the mobile power supply falls and collides, thereby effectively improving the stability of the installation; and the circuit board module is isolated from the battery module, which can avoid short circuit caused by excessive contact, and the foam glue is provided to play a buffering and protective role for the battery module, thereby effectively improving the safety of use.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the 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 therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0070] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. A retractable mobile power source with stable installation, characterized in that: The invention comprises an upper shell cover (1) and a lower shell cover (2) which are snap-fitted together, an installation cavity (3) is arranged between the upper shell cover (1) and the lower shell cover (2), the installation cavity (3) comprises a first installation cavity (31) and a second installation cavity (32) which are arranged adjacent to each other, a telescopic brake module (4) and a circuit board module (5) are arranged in the first installation cavity (31), and a battery module (6) is arranged in the second installation cavity (32); The telescopic brake module (4) is wound with a charging line (7), the input end of the charging line (7) is connected to the circuit board module (5), the output end of the charging line (7) is exposed outside the installation cavity (3), and the battery module (6) is electrically connected to the circuit board module (5); Foam glue (8) is filled between the battery module (6) and the inner wall of the second installation cavity (32).

2. The stably installed retractable mobile power source according to claim 1, characterized in that: The first installation cavity (31) comprises a first upper cover (311) and a first lower cover (312) which are snap-fitted together, and the first lower cover (312) is connected to the upper surface of the housing lower cover (2).

3. The stably installed retractable mobile power source according to claim 2, characterized in that: The telescopic brake module (4) comprises a rotating shaft (41), a winding drum (42), a spring and a brake assembly (43); The two ends of the rotating shaft (41) are respectively fixedly connected to the first upper cover (311) and the first lower cover (312); the charging cable (7) is wound around the cable reel (42), and the cable reel (42) rotates around the rotating shaft (41); The brake assembly (43) is connected to the cable reel (42) and is used to brake the rotation of the cable reel (42); the cable reel (42) is provided with a mounting groove (44) for accommodating the clockwork spring; The clockwork spring is connected to the charging cable (7) and is used to retract the charging cable (7) and wind it around the cable reel (42).

4. The stably installed retractable mobile power source according to claim 3, characterized in that: A cover plate (9) is buckled and connected at the notch of the installation slot (44), and the brake assembly (43) is connected to the cover plate (9).

5. The stably installed retractable mobile power source according to claim 4, characterized in that: A plurality of first card slots are arranged at the edge of the slot opening of the installation slot (44), and a first card block (91) for matching with the plurality of first card slots is arranged at the edge of the cover plate (9).

6. The stably installed retractable mobile power source according to claim 3, characterized in that: The first upper cover (311) is provided with a first positioning portion (3111) for positioning the first end of the rotating shaft (41), and the first lower cover (312) is provided with a second positioning portion (3121) for positioning the second end of the rotating shaft (41).

7. The stably installed retractable mobile power source according to claim 3, characterized in that: The circuit board module (5) comprises a first circuit board (51) and a conductive terminal (52), wherein the conductive terminal (52) is located between the first circuit board (51) and the cable reel (42), and the conductive terminal (52) is arranged on the cable reel (42); The first circuit board (51) is provided with a power rail, the power rail is distributed around the rotation path of the conductive terminal (52), and the conductive terminal (52) is in sliding contact with the power rail.

8. The stably installed retractable mobile power source according to claim 7, characterized in that: The first lower cover (312) is provided with a plurality of positioning posts for positioning the first circuit board (51), and the first circuit board (51) is provided with positioning holes (511) for matching with the plurality of positioning posts.

9. The stably installed retractable mobile power source according to claim 1, characterized in that: A second card block (11) is provided at the edge of the upper cover (1) of the housing, and a second card slot (21) for matching with the second card block (11) is provided at the edge of the lower cover (2) of the housing.

10. The stably installed retractable mobile power source according to claim 1, characterized in that: The housing upper cover (1) or the housing lower cover (2) is provided with a receiving groove (10) for receiving the output end of the charging cable (7).

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