Handheld power bank

Abstract

A power bank, in particular a handheld power bank, which handheld power bank comprises a charging unit, charging cables, charging plugs, and a holder, wherein the charging plugs are electrically connected to the charging unit by means of the charging cables, the charging cables extend out of the charging unit; the holder is directly or indirectly connected to the charging unit, and a first magnetic member is provided in the holder; a second magnetic member is provided in each of the charging plugs, and the second magnetic member is attracted to the first magnetic member, such that the charging plug is fixed onto the holder; and when the charging plug is fixed onto the holder, the charging cable is bent to form a ring-shaped handheld structure. The charging plug is fixed onto the holder by means of magnetic attraction, such that the charging cable is bent into a ring-shaped handheld structure that allows a consumer user to hook the ring-shaped handheld structure with a finger when holding the power bank, thereby improving the grip experience of the user.

Description

A portable power bank Technical Field

[0001] This utility model relates to a charging device, and more particularly to a portable power bank. Background Technology

[0002] With the rapid development of mobile communication, various mobile smart devices are gradually becoming indispensable tools in people's daily lives. In order to meet people's needs for charging their mobile phones when they are out and about, power banks have become one of the mainstream methods for charging smart devices outdoors.

[0003] Please refer to Figure 1, which shows a common type of power bank with a charging cable. It includes a power bank body 1, a charging head 2, and a charging cable 3. The charging cable 3 connects the power bank body 1 and the charging head 2. A groove 4 is provided on the outer shell of the power bank body 1, into which the charging head 2 and charging cable 3 can be embedded to form an integrated box structure with the power bank body 1. When charging is needed, the charging head 2 is removed from the groove 4 and connected to a smart device. This design results in the charging cable 3 and charging head 2 occupying part of the volume space of the power bank body 1, leading to a larger power bank body 1. It also limits the capacity of the power bank body 1 by the possibility of housing a larger battery.

[0004] Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a portable power bank that allows the charging cable to be bent into a loop-shaped handle structure, making it convenient for users to carry the power bank.

[0006] A portable power bank includes a charging unit, a charging cable, a charging head, and a card holder. The charging head is electrically connected to the charging unit via the charging cable, which extends out of the charging unit. The card holder is directly or indirectly connected to the charging unit and has a first magnetic component inside. The charging head has a second magnetic component inside, which attracts the first magnetic component, thus fixing the charging head to the card holder. When the charging head is fixed to the card holder, the charging cable is bent to form a loop-shaped handle structure.

[0007] Compared to existing technologies, the portable power bank of this invention uses magnetic attraction to fix the charging head to the card holder, thereby bending the charging cable to form a loop-shaped handle structure. This allows consumers to hook the loop-shaped handle structure with their fingers when carrying the power bank, making it easy to carry. At the same time, it does not require occupying the volume of the charging unit to store the charging cable and charging head, thus reducing the size of the charging unit.

[0008] Furthermore, the surface of the card holder is recessed with a receiving groove for accommodating the charging head, which further secures the charging head magnetically attached to the card holder and prevents the charging head from slipping out.

[0009] Furthermore, a locking block is provided on the side wall of the receiving groove, and a locking slot is provided on the charging head corresponding to the locking block. When the charging head moves in the receiving groove along a first direction, the locking slot engages with the locking block to restrict the movement of the charging head away from the bottom wall of the receiving groove. When the charging head moves in the receiving groove along a second direction, the locking slot disengages from the locking block. The first direction and the second direction are opposite. Through the engaging structure of the locking slot on the charging head and the locking block on the side wall of the receiving groove, the charging head on the holder is further secured, preventing the charging head from slipping out.

[0010] Furthermore, the thickness of the charging head is greater than the depth of the charging head receiving slot, so as to facilitate the user to push the charging head to move within the receiving slot and remove the charging head.

[0011] Furthermore, an arc-shaped guide structure is provided on the side wall of the receiving slot away from the charging cable. When the charging head moves in the second direction, the charging head disengages from the receiving slot along the arc-shaped guide structure. When the user pushes the charging head out of the receiving slot, the charging head is lifted by the arc-shaped guide structure, making it easier to remove.

[0012] Furthermore, the holder has a recessed cable-holding groove on the side wall of the receiving groove along the depth direction of the receiving groove. When the charging head is assembled in the receiving groove, the charging cable is at least partially received in the cable-holding groove. The charging cable can be inserted into the cable-holding groove, allowing the charging head to be embedded more deeply into the receiving groove; at the same time, it can also increase the contact area between the charging head and the side wall of the receiving groove, improve the stability of the power bank when carried, and prevent the charging head from easily detaching from the receiving groove.

[0013] Furthermore, the second magnetic component is positioned on the side of the charging head that is biased towards the first magnetic component, reducing the distance between the first and second magnetic components, thereby increasing the magnetic attraction force and making the charging head and the card holder more secure.

[0014] Furthermore, there are two receiving slots, and two charging cables and two charging heads are correspondingly provided. The two charging heads are respectively fixed in the two receiving slots, so that the charging cables are bent to form a ring-shaped carrying structure. When the user is charging with one of the charging heads, the other charging head can also be fixed in the card holder to form a ring-shaped carrying structure, making it convenient for the user to hold the power bank while charging.

[0015] Preferably, each of the two receiving slots has a locking block on its sidewall, and each charging head has a locking slot corresponding to the locking block position. When the charging head moves in the receiving slot along a first direction, the locking slot engages with the locking block to restrict the charging head from moving away from the bottom wall of the receiving slot. When the charging head moves in the receiving slot along a second direction, the locking slot disengages from the locking block. The first and second directions are opposite, and the first and second directions of the two charging heads are the same. This makes it easier for users to remember the removal direction of the two charging heads, avoids confusion caused by different removal directions, and improves the user experience.

[0016] Furthermore, the card holder is connected to the housing of the charging unit via a connecting cable, with one end of the cable connected to the card holder and the other end connected to the housing of the charging unit. Designing the card holder external to the charging unit reduces the size of the charging unit.

[0017] Furthermore, the connection portions of the two charging cables and the charging unit are located on the same side of the connecting line, with one charging cable positioned adjacent to the connecting line relative to the other charging cable. The length of the charging cable adjacent to the connecting line is shorter than the length of the other charging cable located away from the connecting line. When the charging cable adjacent to the connecting line is bent to form a loop-shaped carrying structure, it is enveloped by the carrying structure formed by the other charging cable located away from the connecting line. This allows the handle formed by one charging cable to be enveloped by the carrying structure formed by the other charging cable, thus forming a single carrying handle.

[0018] Preferably, the card holder can also be disposed on the charging cable or on the housing of the charging unit. This eliminates the need for an additional connecting cable to connect the card holder to the charging unit.

[0019] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the structure of a power bank in the prior art.

[0021] Figure 2 is a structural schematic diagram of Embodiment 1 of the portable power bank of this utility model.

[0022] Figure 3 is a schematic diagram of the overall structure of the card holder and charging head in Example 1.

[0023] Figure 4 is a schematic diagram of the card holder structure in Example 1.

[0024] Figure 5 is a cross-sectional view of the internal structure of the card holder in Example 1.

[0025] Figure 6 is a cross-sectional view of the internal structure of the charging head in Example 1.

[0026] Figure 7 is a schematic diagram of the charging head in Example 1.

[0027] Figure 8 is a structural schematic diagram of Embodiment 2 of the portable power bank of this utility model.

[0028] Figure 9 is a cross-sectional view of the overall structure of the card holder in Example 2.

[0029] Figure 10 is a schematic diagram of the charging head in Example 2.

[0030] Figure 11 is a cross-sectional view of the card holder and the charging head when they are engaged in Example 2.

[0031] Figure 12 is a cross-sectional view of the overall structure of the card holder in Example 3.

[0032] Figure 13 is a schematic diagram of the charging head in Example 3.

[0033] Figure 14 is a cross-sectional view of the card holder and the charging head when they are engaged in Example 3.

[0034] Figure 15 is a structural schematic diagram of Embodiment 4 of the portable power bank of this utility model.

[0035] Figure 16 is a schematic diagram of the overall structure of the card holder and charging head in Example 4.

[0036] Figure 17 is a cross-sectional view of the card holder and charging head in Example 4.

[0037] Reference numerals: 10-Charging unit; 20-Card slot; 21-Divider plate; 22-Back plate; 221-Card slot; 23-Side plate; 231-First card block; 232-Second card block; 24-First receiving slot; 25-Second receiving slot; 26-First magnetic component; 27-First arc-shaped guide structure; 28-Second arc-shaped guide structure; 30-First charging head; 31-Front wall; 32-Side wall; 321-Card slot; 33-Rear wall; 34-Second magnetic component; 40-First charging cable; 50-Second charging head; 51-Front wall; 52-Side wall; 521-Card slot; 53-Rear wall; 54-Second magnetic component; 60-Second charging cable; 70-Connecting cable; 29-Housing shell; 220-Inner box; 225-First annular plate; 226 - Second annular plate; 223- First connecting plate; 224- Second connecting plate; 270- First cantilever; 280- Second cantilever; 35- First groove; 55- Second groove; 78- Locking unit; 71- First locking block; 72- Second locking block; 73- Connecting rod; 74- First linkage rod; 741- First slot; 75- Second linkage rod; 751- Second slot; 76- Button; 761- Pressing plate; 762- First linkage block; 763- Second linkage block; 77- Spring; 227- First protrusion; 228- First included angle; 230- Second protrusion; 229- Second included angle; 36- First charging head body; 37- First charging head plug end; 56- Second charging head body; 57- Second charging head plug end. Detailed Implementation

[0038] This invention redesigns the structure of a portable power bank by incorporating a locking mechanism between the charging head and the card slot, allowing the charging cable to be bent into a loop-shaped handle for easy carrying.

[0039] The following is a detailed description of the charging stand designed according to the present invention, with reference to the accompanying drawings.

[0040] Example 1, referring to Figures 2 and 3, shows a portable power bank comprising a charging unit 10, a card holder 20, a first charging head 30, a first charging cable 40, a second charging head 50, and a second charging cable 60. The card holder is connected to the outer shell of the charging unit 10 via a connecting cable 70. One end of the connecting cable 70 is connected to the card holder 20, and the other end is connected to the outer shell of the charging unit 10. One end of the first charging cable 40 and the second charging cable 60 are connected to the outer shell of the charging unit 10, and the other end is respectively connected to the first charging head 30 and the second charging head 50. The first charging head 30 and the second charging head 50 can be fixedly connected to the card holder 20, thereby bending the first charging cable 40 and the second charging cable 60 to form a loop-shaped carrying structure, making it convenient for users to carry the power bank.

[0041] Specifically, please refer to Figure 4. The card holder 20 includes a partition plate 21, a back plate 22, and two side plates 23. The two side plates 23 are arranged opposite each other and erected at both ends of the partition plate 21. The back plate 22 is erected at the ends of the two side plates 23 and the partition plate 21. The partition plate 21, the back plate 22, and the two side plates 23 respectively form a first receiving groove 24 and a second receiving groove 25 on both sides of the partition plate 21. The back plate 22 is also provided with a first cable clamping groove 221 and a second cable clamping groove 222, so that when the first charging head 30 and the second charging head are respectively placed in the first receiving groove 24 and the second receiving groove 25, the first charging cable 40 connected to the end of the first charging head 30 and the second charging cable 60 connected to the end of the second charging head can be partially received in the first cable clamping groove 221 and the second cable clamping groove 222, respectively. Furthermore, the outer walls of the first charging head 30 and the second charging head 50 can form contact with the partition plate 21, the back plate 22 and the side plate 23, so that the first charging head 30 and the second charging head 50 can be more deeply assembled in the first receiving groove 24 and the second receiving groove 25, increasing the contact area between the charging head and the card holder 20 when the power bank is carried, improving the stability of the power bank when carried, and preventing the charging head from detaching from the receiving groove 24.

[0042] Please refer to Figures 5 and 6. A first magnetic element 25 is also embedded inside the partition plate 21. The first charging head 30 and the second charging head 50 include a front wall 31 (51), a side wall 32 (52), and a rear wall 33 (53), forming a fully enclosed structure. A second magnetic element 34 (54) is also provided inside the first charging head 30 and the second charging head 50 near the side wall 32 (52). When the first charging head 30 and the second charging head 50 are placed in the first receiving groove 24 and the second receiving groove 25, the second magnetic element 34 (54) can be magnetically attracted to the first magnetic element 25, thereby more firmly fixing the charging head in the receiving groove of the card holder 20.

[0043] Please refer to Figure 7. The two side plates 23 of the card holder 20 are respectively provided with a first card block 231 and a second card block 232 facing the first receiving groove 24 and the second receiving groove 25. The side wall 32 (52) of the charging head 30 (50) is also provided with a card groove 321 (521) that extends through the rear wall 33 (53) of the charging head 30 (50) at the position corresponding to the card block 231 (232). The first charging head 30 or the second charging head 50 can be embedded in the first receiving groove 24 or the second receiving groove 25 along the first direction, so that the rear wall 33 (53) of the charging head 30 (50) is in close contact with the back plate 22 of the card holder 20, and the charging cable 40 (60) is partially housed in the cable slot 221 (222). At this time, the card block 231 (232) cooperates with the card slot 321 (521) of the charging head 30 (50) to prevent the charging head 30 (50) from moving in the direction perpendicular to the partition plate 21. When the first charging head 30 or the second charging head 50 moves along the second direction within the first receiving slot 24 or the second receiving slot 25, the slot 321 (521) of the charging head 30 (50) disengages from the locking block 231 (232), and the movement of the charging head 30 (50) in the direction perpendicular to the partition plate 21 is no longer limited, allowing the charging head 30 (50) to be moved out of the receiving slot 24 (25). The first direction is the direction along the partition plate 21 pointing towards the back plate 22, and the second direction is the opposite of the first direction. The first direction and the second direction of the first charging head 30 and the second charging head 50 are the same, which makes it convenient for the user to remember the direction in which the two charging heads 30 (50) are taken out of the receiving slot 24 and installed.

[0044] Preferably, the thickness of the charging head 30 (50) is greater than the height of the back plate 22 and side plate 23 of the card holder 20 extending out of the partition plate 21, so that the user has a good point of force when pushing out the charging head 30 (50), making it convenient to remove the charging head 30 (50).

[0045] The partition plate 21 of the card holder 20 is provided with a first arc-shaped guide structure 27 and a second arc-shaped guide structure 28 at the end away from the back plate 22. The first arc-shaped guide structure 27 and the second arc-shaped guide structure 28 are symmetrically arranged on both sides of the partition plate 21. The arc-shaped guide structure 27 (28) is raised at a certain arc in the direction away from the partition plate 21, so that when the charging head 30 (50) is pushed out from the receiving groove 24 (25) in the second direction, the charging head 30 (50) can be raised outward at a certain angle, which makes it convenient for the user to lift and take out the charging head 30 (50).

[0046] Preferably, the connection between the charging cable 40 (60) and the charging unit 10 is located on the same side of the connecting line 70. The first charging cable 40 is arranged adjacent to the connecting line 70 relative to the second charging cable 60. The length of the first charging cable 40 is shorter than the length of the second charging cable 60. When the first charging cable 40 is bent to form a loop handle structure, it is wrapped inside the handle structure formed by the second charging cable 60 bending, so that the charging cable 40 (60) forms a loop handle as a whole.

[0047] In another embodiment, the card holder 20 is disposed on the first charging cable 40 and the second charging cable 60. One end of the first charging cable 40 and the second charging cable 60 are connected to the charging unit 10, and the other end passes through the interior of the card holder 20 and is respectively connected to the first charging head 30 and the second charging head 50. Compared with this embodiment, the connecting line 70 is eliminated, and a part of the charging cable 40 (60) replaces the function of the connecting line 70 in this embodiment, reducing the structural complexity.

[0048] Alternatively, in another embodiment, the card holder 20 is directly mounted on the outer shell of the charging unit 10, eliminating the connecting wire 70 compared to this embodiment and reducing the structural complexity of the entire portable power bank.

[0049] Example 2, please refer to Figure 8. The portable power bank of this example includes a charging unit 10, a card holder 20, a first charging head 30, a first charging cable 40, a second charging head 50, a second charging cable 60, and a locking unit 78. The first charging head 30 and the second charging head 50 are electrically connected to the charging unit 10 through the first charging cable 40 and the second charging cable 60, respectively, and the first charging cable 40 and the second charging cable 60 extend out of the charging unit 10. The card holder 20 is disposed on the first charging cable 40 and the second charging cable 60, and the first charging cable 40 and the second charging cable 60 pass through the card holder 20. The locking unit 78 is disposed in the card holder 20, and the first charging head 30 and the second charging head 50 are respectively engaged and fixed to the card holder 20 through the locking unit 78. When the first charging head 30 and the second charging head 50 are fixed to the card holder 20, the first charging cable 40 and the second charging cable 60 are bent to form a ring-shaped handle structure, making it convenient for users to carry the power bank.

[0050] Specifically, referring to Figure 9, the card holder 20 includes a housing 29 and an inner box 220. The housing 29 is fitted over the inner box 220. The inner box 220 includes a first annular plate 225, a second annular plate 226, a first connecting plate 223, and a second connecting plate 224. The first annular plate 225 and the second annular plate 226 respectively form a first receiving groove 24 and a second receiving groove 25, into which the first charging head 30 and the second charging head 50 can be inserted. The first connecting plate 223 and the second connecting plate 224 are fixedly connected between the first annular plate 225 and the second annular plate 226, forming a receiving cavity between the first connecting plate 223 and the second connecting plate 224 through which the first charging cable 40 and the second charging cable 60 can pass. The first charging cable 40 and the second charging cable 60 pass through the receiving cavity, simultaneously fixing the card holder 20 to the first charging cable 40 and the second charging cable 60.

[0051] Please refer to Figures 10 and 11. The first charging head 30 and the second charging head 50 are respectively provided with a first groove 35 and a second groove 55 on their side walls. The locking unit 78 includes a first engaging block 71 and a second engaging block 72. When the first charging head 30 and the second charging head 50 are inserted into the first receiving groove 24 and the second receiving groove 25, the first engaging block 71 and the second engaging block 72 can be embedded in the first groove 35 and the second groove 55 respectively to fix the first charging head 30 and the second charging head 50 in the card holder 20.

[0052] The locking unit 78 further includes a connecting rod 73, a first linkage rod 74, a second linkage rod 75, and a button 76. The button 76 is disposed on the housing 29 of the card holder 20. The button 76 includes a pressing plate 761, a first linkage block 762, and a second linkage block 763. The pressing plate 761 is disposed opposite to the first connecting plate 223. The top ends of the first linkage rod 74 and the second linkage rod 75 are provided with a first slot 741 and a second slot 751. One end of the first linkage block 762 and the second linkage block 763 is fixedly connected to the pressing plate 761 of the button 76. The other ends of the first linkage block 762 and the second linkage block 763 are respectively embedded in the first slot 741 and the second slot 751 of the first linkage rod 74 and the second linkage rod 75 for engagement and fixation, so that the button 76 can move synchronously with the first linkage rod 74 and the second linkage rod 75. The first engagement block 71 and the second engagement block 72 are respectively fixed to the bottom ends of the first linkage rod 74 and the second linkage rod 75. The two ends of the connecting rod 73 are fixedly connected to the first locking block 71 and the second locking block 72 respectively to prevent the first linkage rod 74 and the second linkage rod 75 from deforming, causing the first locking block 71 and the second locking block 72 to disengage from the first groove 35 and the second groove 55 of the first charging head 30 and the second charging head 50.

[0053] The locking unit 78 also includes a spring 77, one end of which abuts against the first connecting plate 223 and the other end against the pressing plate 761. The spring 77 pushes the button 76 outward through the pressing plate 761. At the same time, since the first linkage block 762 and the second linkage block 763 fixed on the button 76 are engaged with the first linkage rod 74 and the second linkage rod 75, the spring 77 also pushes the first linkage rod 74 and the second linkage rod 75 outward, causing the first engaging block 71 and the second engaging block 72 connected to the first linkage rod 74 and the second linkage rod 75 to press inward against the first groove 35 and the second groove 55 of the first charging head 30 and the second charging head 50, preventing the charging head from coming out.

[0054] In another embodiment, the card holder 20 is mounted on the charging unit 10 via a connecting wire, with one end of the connecting wire fixed to the card holder 20 and the other end fixed to the charging unit 10.

[0055] Alternatively, in another embodiment, the card holder 20 is directly mounted on the charging unit 10, reducing the structural complexity of the entire portable power bank.

[0056] Example 3, please refer to Figure 8. The portable power bank of this embodiment includes a charging unit 10, a card holder 20, a first charging head 30, a first charging cable 40, a second charging head 50, and a second charging cable 60. The first charging head 30 and the second charging head 50 are electrically connected to the charging unit 10 through the first charging cable 40 and the second charging cable 60, respectively. The first charging cable 40 and the second charging cable 60 extend out of the charging unit 10. The card holder 20 is disposed on the first charging cable 40 and the second charging cable 60, and the first charging cable 40 and the second charging cable 60 pass through the card holder 20. The first charging head 30 and the second charging head 50 can be engaged and fixed with the card holder 20. When the first charging head 30 and the second charging head 50 are fixed to the card holder 20, the first charging cable 40 and the second charging cable 60 are bent to form a ring-shaped handle structure, making it convenient for users to carry the power bank.

[0057] Specifically, referring to Figure 12, the card holder 20 includes a housing 29 and an inner box 220. The housing 29 is fitted over the inner box 220. The inner box 220 includes a first annular plate 225, a second annular plate 226, a first connecting plate 223, and a second connecting plate 224. The first annular plate 225 and the second annular plate 226 respectively form a first receiving groove 24 and a second receiving groove 25, into which the first charging head 30 and the second charging head 50 can be inserted. The first connecting plate 223 and the second connecting plate 224 are fixedly connected between the first annular plate 225 and the second annular plate 226, forming a receiving cavity between the first connecting plate 223 and the second connecting plate 224 through which the first charging cable 40 and the second charging cable 60 can pass. The first charging cable 40 and the second charging cable 60 pass through the receiving cavity, simultaneously fixing the card holder 20 to the first charging cable 40 and the second charging cable 60.

[0058] Please refer to Figures 13 and 14. The sidewalls of the first charging head 30 and the second charging head 50 are respectively provided with a first groove 35 and a second groove 55. The first annular plate 225 and the second annular plate 226 are respectively provided with a first cantilever 270 and a second cantilever 280. The first cantilever 270 and the second cantilever 280 have a certain elasticity. The ends of the first cantilever 270 and the second cantilever 280 are respectively fixed with a first locking block 71 and a second locking block 72. When the first charging head 30 and the second charging head 50 are inserted into the first receiving groove 24 and the second receiving groove 25, the first locking block 71 and the second locking block 72 can be embedded in the first groove 35 and the second groove 55, respectively. At this time, due to the elasticity of the first cantilever 270 and the second cantilever 280, the first locking block 71 and the second locking block 72 push inward against the first groove 35 and the second groove 55 of the first charging head 30 and the second charging head 50, fixing the first charging head 30 and the second charging head 50 in the card holder 20. Meanwhile, since the first cantilever 270 and the second cantilever 280 are elastic, the first charging head 30 and the second charging head 50 can be directly inserted into or pulled out of the first receiving slot 24 and the second receiving slot 25.

[0059] Preferably, the first locking block 71 and the second locking block 72, as well as the first groove 35 and the second groove 55 on the first charging head 30 and the second charging head 50, are trapezoidal in shape. When the charging head is inserted into or pulled out of the receiving groove, the contact surface between the locking block and the groove is an inclined surface at a certain angle to the direction of force application, thereby reducing the force required to insert or pull out the charging head 30 (50) and making it more convenient for the user.

[0060] In another embodiment, the card holder 20 is mounted on the charging unit 10 via a connecting wire, with one end of the connecting wire fixed to the card holder 20 and the other end fixed to the charging unit 10.

[0061] Alternatively, in another embodiment, the card holder 20 is directly mounted on the charging unit 10, reducing the structural complexity of the entire portable power bank.

[0062] Example 4, please refer to Figures 15 and 16. This embodiment of the portable power bank includes a charging unit 10, a card holder 20, a first charging head 30, a first charging cable 40, a second charging head 50, and a second charging cable 60. The card holder is connected to the outer shell of the charging unit 10 via a connecting cable 70. One end of the connecting cable 70 is connected to the card holder 20, and the other end is connected to the outer shell of the charging unit 10. One end of the first charging cable 40 and the second charging cable 60 are connected to the outer shell of the charging unit 10, and the other end is respectively connected to the first charging head 30 and the second charging head 50. The first charging head 30 and the second charging head 50 can be fixedly connected to the card holder 20, thereby bending the first charging cable 40 and the second charging cable 60 to form a loop-shaped carrying structure. Simultaneously, when one charging head is charging, the other charging head can also be embedded in the card holder to form a handle, making it convenient for the user to carry the power bank.

[0063] Specifically, in this embodiment, please refer to Figure 17. The card holder 20 includes a partition plate 21, a first protrusion 227, and a second protrusion 230. The first protrusion 227 and the second protrusion 230 protrude from the surface of the partition plate 21 and are spaced apart. There are two of the first protrusion 227 and the second protrusion 230. The two first protrusions 227 and the two second protrusions 230 respectively form a first receiving groove 24 and a second receiving groove 25 with the opposite two surfaces of the partition plate 21. The first receiving groove 24 is located on the partition plate near the connection portion where the first charging cable 40 and the second charging cable 60 are connected to the charging unit 10. The first charging head 30 and the second charging head 50 can be placed in the first receiving groove 24 and the second receiving groove 25, respectively.

[0064] The first charging head 30 includes a first charging head body 36 and a first charging head connector 37 located at the front end of the first charging head body 36, and the rear end of the first charging head body 36 is connected to the first charging cable 40. The second charging head 50 includes a second charging head body 56 and a second charging head connector 57 located at the front end of the second charging head body 56, and the rear end of the second charging head body 56 is connected to the second charging cable 60.

[0065] The first protrusion 227 is disposed on the partition plate 21 and located at the end where the first charging head 30 and the second charging head 50 are connected to their charging cables; the second protrusion 230 is disposed on the partition plate 21 and located at the end where the first charging head 30 and the second charging head 50 are connected to their plug-in ends. The upper surfaces of the two second protrusions 230 are respectively located below the plug-in ends 37 and 57 of the first charging head and the second charging head. Since the connection position between the plug-in ends of the first charging head 30 and the second charging head 50 and the charging head body is stepped, when the first charging head 30 and the second charging head 50 are inserted into the first receiving groove 24 and the second receiving groove 25, the two second protrusions 230 extend into the stepped position, avoiding the first receiving groove 24 and the second receiving groove 25 from being too long, which would result in the card holder 20 being too large. The upper surfaces of the two first protrusions 227 abut against the first charging cable 40 and the second charging cable 60, respectively, while the upper surfaces of the two second protrusions 230 abut against the insertion ends of the first charging head 30 and the second charging head 50. This ensures that there is no gap between the end of the charging head connected to the charging cable and the first protrusion 227, preventing the charging head from tilting out of the receiving groove under force.

[0066] The partition plate 21 is also embedded with a first magnetic element 26; the first charging head 30 and the second charging head 50 are respectively provided with a second magnetic element 34 and a second magnetic element 58 near their contact with the partition plate 21. When the first charging head 30 and the second charging head 50 are placed in the first receiving groove 24 and the second receiving groove 25 respectively, the first magnetic element 26 can attract the second magnetic element 34 and the second magnetic element 58, thereby fixing the first charging head 30 and the second charging head 50 in the first receiving groove 24 and the second receiving groove 25 of the card holder 20. At this time, the first charging head 30 and the second charging head 50 respectively abut against the two first protrusions 227 to provide auxiliary positioning for the charging head and prevent the charging head from falling out. Thus, the first charging cable 40 and the second charging cable 60 form a ring-shaped handle structure, which allows consumers to hook their fingers on the ring-shaped handle structure when carrying the power bank, making it easy to carry. At the same time, it does not require occupying the volume of the charging unit 10 to store the charging cable and charging head, thus reducing the volume of the charging unit 10. Meanwhile, the charging head can only be assembled or detached from the openings on the top or sides of the receiving slot, thus providing a better user experience when assembling the charging head.

[0067] Furthermore, the surfaces of the two first protrusions 227 facing the receiving groove form a first angle 228 with the partition plate 21. The first angle 228 is greater than 0° and less than 90°. The surfaces of the first charging head 30 and the second charging head 50 facing the first protrusion 227 are parallel to the surfaces of the first protrusion 227 facing the receiving groove. The first angle 228 formed by the first protrusion 227 and the partition plate 21 better confines the charging head within the receiving groove, preventing it from detaching from the opening direction above the receiving groove. The surface of the second protrusion 230 facing the receiving groove is parallel to the surface of the first protrusion 227 facing the receiving groove. The surfaces of the first charging head 30 and the second charging head 50 facing the second protrusion 230 are respectively parallel to the surfaces of the two second protrusions 230 facing the receiving groove. The surface of the second protrusion 230 facing the receiving groove forms an obtuse angle with the partition plate 21, facilitating the charging head to be pried upwards from the front end in the insertion direction from the receiving groove.

[0068] Preferably, the connection portions of the first charging cable 40 and the second charging cable 60 with the charging unit 10 are located on the same side of the connecting line 70, wherein the first charging cable 40 is disposed adjacent to the connecting line 70 relative to the second charging cable 60, wherein the length of the first charging cable 40 is shorter than the length of the second charging cable 60, and when the first charging cable 40 is bent to form a loop-shaped carrying structure, it is wrapped inside the carrying structure formed by the second charging cable 60. When both the first charging head 30 and the second charging head 50 are placed in the receiving groove, the first charging cable 40 and the second charging cable 60 together form a handle.

[0069] In another embodiment, the number of the first protrusion 227 and the second protrusion 230 is one, and the first protrusion 227 and the second protrusion 230 form a receiving groove with one of the surfaces of the partition plate 21, and the first charging head 30 and the second charging head 50 can be placed side by side in the receiving groove.

[0070] In another embodiment, the card holder 20 is disposed on the first charging cable 40 and the second charging cable 60. One end of the first charging cable 40 and the second charging cable 60 are connected to the charging unit 10, and the other end passes through the interior of the card holder 20 and is respectively connected to the first charging head 30 and the second charging head 50. Compared with this embodiment, the connecting line 70 is eliminated, and a part of the charging cable 40 (60) replaces the function of the connecting line 70 in this embodiment, reducing the structural complexity.

[0071] Alternatively, in another embodiment, the card holder 20 is directly mounted on the outer shell of the charging unit 10, eliminating the connecting wire 70 compared to this embodiment and reducing the structural complexity of the entire portable power bank.

[0072] Compared to existing technologies, this portable power bank can fix the charging head on the socket connected to the charging unit and bend the charging cable to form a loop-shaped handle structure, allowing users to hold the power bank through this loop-shaped handle structure, improving the user's grip experience. At the same time, when using one of the charging heads of the power bank for charging, the other charging cable can also form a loop-shaped handle structure, making it convenient for users to hold the power bank while charging, reducing the difficulty of holding it.

[0073] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” means two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0074] The above-described embodiments are merely one specific implementation of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A portable power bank, characterized in that: The device includes a charging unit, a charging cable, a charging head, and a card holder. The charging head is electrically connected to the charging unit via the charging cable, which extends out of the charging unit. The card holder is directly or indirectly connected to the charging unit and contains a first magnetic component. The charging head contains a second magnetic component, which attracts the first magnetic component, thus fixing the charging head to the card holder. When the charging head is fixed to the card holder, the charging cable is bent to form a loop-shaped handle structure.

2. The portable power bank according to claim 1, characterized in that: The card holder surface is recessed with a receiving groove for accommodating the charging head.

3. The portable power bank according to claim 2, characterized in that: The receiving groove has a locking block on its side wall, and the charging head has a locking slot corresponding to the locking block. When the charging head moves in the receiving groove along a first direction, the locking slot engages with the locking block to restrict the charging head from moving away from the bottom wall of the receiving groove. When the charging head moves in the receiving groove along a second direction, the locking slot disengages from the locking block. The first direction and the second direction are opposite.

4. The portable power bank according to claim 3, characterized in that, The thickness of the charging head is greater than the depth of the charging head receiving groove.

5. The portable power bank according to claim 3, characterized in that, An arc-shaped guide structure is provided on the side wall of the receiving groove away from the charging cable. When the charging head moves in the second direction, the charging head disengages from the receiving groove along the arc-shaped guide structure.

6. The portable power bank according to claim 2, characterized in that: The card holder has a cable-holding groove recessed on the side wall of the receiving groove along the depth direction of the receiving groove. When the charging head is assembled in the receiving groove, the charging cable is at least partially received in the cable-holding groove.

7. The portable power bank according to claim 1, characterized in that: The second magnetic component is disposed on the side of the charging head that is biased toward the first magnetic component.

8. The portable power bank according to claim 2, characterized in that: There are two receiving slots, and two charging cables and two charging heads are set accordingly. The two charging heads are fixed to the two receiving slots respectively, so that the charging cables are bent to form a ring-shaped handle structure.

9. The portable power bank according to claim 8, characterized in that: The sidewalls of the two receiving slots are respectively provided with locking blocks, and each charging head is provided with a locking slot corresponding to the locking block position. When the charging head moves in the receiving slot along the first direction, the locking slot engages with the locking block to restrict the movement of the charging head away from the bottom wall of the receiving slot. When the charging head moves in the receiving slot along the second direction, the locking slot disengages from the locking block. The first direction and the second direction are opposite, and the first direction and the second direction of the two charging heads are the same.

10. The portable power bank according to any one of claims 1 to 9, characterized in that: The card holder is connected to the outer shell of the charging unit via a connecting cable, with one end of the connecting cable connected to the card holder and the other end connected to the outer shell of the charging unit.

11. The portable power bank according to claim 10, characterized in that: The connection portions of the two charging cables and the charging unit are located on the same side of the connecting line, wherein one of the charging cables is arranged adjacent to the connecting line relative to the other charging cable, wherein the length of the charging cable adjacent to the connecting line is shorter than the length of the other charging cable that is away from the connecting line, and when the charging cable adjacent to the connecting line is bent to form a loop handle structure, it is wrapped inside by the handle structure formed by the other charging cable that is away from the connecting line being bent.

12. The portable power bank according to any one of claims 1 to 9, characterized in that: The card holder is disposed on the charging cable or on the housing of the charging unit.

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