A charger structure convenient to move

Abstract

The utility model relates to charging equipment technical field, concretely relates to a charger structure convenient to remove, include: lower casing and backplate, the outside fixed of backplate has the telescopic pull rod that extends upwards, the upper surface of lower casing is provided with counterweight box, a plurality of counterweight blocks are fixed in the predetermined position in counterweight box, the top of counterweight box is provided with drive power module, drive power module is fixed with a plurality of super capacitor in the side close to first edge, aiming at the problem that the charger in prior art is inconvenient to move after increasing more electronic device, the structure of charger is improved in this scheme, the wheel is set up in the side of lower casing, and the backplate is set up and installs telescopic pull rod in the top of this direction. In the use, with the wheel axle as the fulcrum, the lower casing other side's supporting leg can be made to leave the ground through exerting certain moment to telescopic pull rod, at this moment, the charger can be moved more simply through pulling telescopic pull rod.

Description

Technical Field

[0001] This utility model relates to the field of charging equipment technology, and specifically to a charger structure that is easy to move. Background Technology

[0002] A charger is a device used to charge various electronic and electrical devices powered by batteries. It is usually connected to the external mains power through a cable, and performs corresponding transformations on the supply voltage, including rectification, transformation, and filtering, to form a direct current of corresponding amplitude and current to provide charging for subsequent energy storage devices, such as batteries.

[0003] Similar portable charger structures already exist in the prior art.

[0004] For example, patent document CN202011615601.5 discloses a portable charger for electric vehicles, including a protective shell with a cover hinged to the top. A control box is housed inside the protective shell, with cables fixed to both ends. A charging gun head and a three-prong plug are fixed to one end of each cable. Multiple fixing plates are fixedly connected to the front surface of the protective shell, with fixing rods fixedly connected inside each fixing plate and rotating rods rotatably connected to the outer surface of each fixing rod. A support plate is fixedly connected to the front surface of the cover, and a mounting groove is formed on the front surface of the support plate. This design, by providing complete closed protection for the control box, avoids accidental damage, thereby increasing the lifespan of the control box and preventing accidental losses, thus improving the practicality of the charger.

[0005] However, in actual implementation, the inventors found that as the charging power gradually increases and the requirements for filtering performance increase, the circuit structure in the charger becomes more complex and requires the addition of more electronic components. For example, when a larger current discharge capacity is required, a larger capacity supercapacitor needs to be pre-installed in the charger to improve the charger's discharge capacity. This leads to a significant increase in the charger's weight. Traditional designs that facilitate handling by setting handles and ergonomically designing the casing cannot adequately meet the needs of moving the charger in this scenario. Utility Model Content

[0006] To address the aforementioned problems in the existing technology, a portable charger structure is provided.

[0007] The specific technical solution is as follows:

[0008] A portable charger structure includes a lower housing and a back panel;

[0009] The lower casing is in the shape of a rectangular plate, and wheels are fixed on the lower surface of the first edge of the lower casing;

[0010] The back plate is fixed on the upper surface of the lower casing near the first edge, and is arranged along the vertical direction;

[0011] An upwardly extending telescopic pull rod is fixed on the outer side of the back plate;

[0012] Downward support legs are fixed on the lower surface of the second edge of the lower casing opposite to the first edge;

[0013] A counterweight box is arranged on the upper surface of the lower casing, and a plurality of counterweight blocks are fixed at predetermined positions in the counterweight box;

[0014] A driving power supply module is arranged above the counterweight box, and a plurality of supercapacitors are fixed on the side of the driving power supply module close to the first edge.

[0015] In another aspect, the device further comprises a back plate and a front casing;

[0016] The back plate is fixed on the upper surface of the lower casing near the first edge, and is arranged along the vertical direction;

[0017] A pair of front casing fixing plates extend from the side surface of the back plate toward the direction of the second edge;

[0018] The front casing is in a U-shape in a top view, and the front casing is arranged on the upper surface of the lower casing;

[0019] The two side surfaces of the front casing are respectively fixedly connected with the front casing fixing plates by bolts.

[0020] In another aspect, the lower casing further comprises a third edge and a fourth edge arranged opposite to each other;

[0021] The third edge and the fourth edge are arranged perpendicularly relative to the first edge;

[0022] Front casing fixing holes are machined on the side surfaces of the third edge and the fourth edge;

[0023] Holes are machined at the positions corresponding to the front casing fixing holes at the bottoms of the two side surfaces of the front casing, and are fixedly connected with the front casing fixing holes through connecting members.

[0024] In another aspect, heat dissipation holes are machined on the upper portions of the two side surfaces of the front casing.

[0025] In another aspect, the device further comprises an upper casing;

[0026] The inner side surface of the upper casing is in the shape of an open box, and is sleeved on the outer sides of the front casing and the back plate;

[0027] Upper case fixing holes are machined in the horizontal direction at the positions of the bottom of the upper case corresponding to the first edge, the third edge and the fourth edge;

[0028] Holes are machined at the positions of the front case and the back plate corresponding to the upper case fixing holes, and the upper case is connected and fixed by connecting members.

[0029] On the other hand, the side of the upper case close to the second edge is slightly lower than the side close to the first edge, so as to form an inclined surface facing the second edge on the top surface of the upper case;

[0030] A plurality of keys are fixed on the inclined surface serving as a control panel;

[0031] A key board is arranged on the inner side of the upper case at a position corresponding to the keys.

[0032] On the other hand, the telescopic pull rod is in a shape of a Chinese character "匚", extends upward in the vertical direction, and a telescopic joint is arranged in the middle of the telescopic pull rod.

[0033] On the other hand, a pair of winding fixing plates are fixed on the outer side of the back plate;

[0034] The section of the winding fixing plate is Z-shaped, and the first plane of the winding fixing plate is fixedly connected with the back plate;

[0035] A positive terminal post and a negative terminal post are respectively fixed on the second plane of the winding fixing plate.

[0036] On the other hand, a three-core power socket is fixed on the back plate.

[0037] The above technical solution has the following advantages or beneficial effects:

[0038] Aiming at the problem that the charger in the prior art is inconvenient to move after adding more electronic devices, the solution improves the structure of the charger, wheels are arranged on one side of the lower case, a back plate is arranged above this direction and a telescopic pull rod is installed. During use, by taking the wheel shaft as a fulcrum and applying a certain torque to the telescopic pull rod, the supporting feet on the other side of the lower case can be lifted off the ground, and at this time, the charger can be moved more easily by pulling the telescopic pull rod; at the same time, in order to reduce the burden on the user, when the driving power module is installed, the side of the driving power module where the supercapacitors are centrally arranged is arranged close to the side of the wheels, so as to reduce the reverse torque provided by the supercapacitors with large mass. Furthermore, in order to avoid the problem that after the cylindrical supercapacitors with large mass are arranged in the charger and the charger is pulled, the center of gravity of the charger may cross the vertical line of the wheel shaft and cause the charger to tip over after the user releases the hand, a counterweight box is additionally arranged below the driving power module, which is used for adjusting a corresponding number of counterweight blocks in the counterweight box to reduce the height of the center of gravity. Attached Figure Description

[0039] Embodiments of the present invention will be described more fully with reference to the accompanying drawings. However, the accompanying drawings are for illustration and explanation only and do not constitute a limitation on the scope of the present invention.

[0040] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model; Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0044] This utility model includes:

[0045] A portable charger structure, such as Figure 1 As shown, it includes a lower housing 1 and a back plate 2;

[0046] The lower housing 1 is rectangular plate-shaped, and a wheel 3 is fixed to the lower surface of the first edge of the lower housing 1;

[0047] The back plate 2 is fixed to the upper surface of the lower housing near the first edge and is set in the vertical direction;

[0048] An upwardly extending telescopic rod 4 is fixed to the outer side of the back panel 2;

[0049] The lower surface of the lower housing 1, which is opposite to the first edge, is fixed with a downward-facing support leg 5;

[0050] A counterweight box 7 is provided on the upper surface of the lower housing 1, and multiple counterweight blocks are fixed at predetermined positions in the counterweight box 7;

[0051] A drive power module 6 is provided above the counterweight box 5, and multiple supercapacitors 61 are fixed on the side of the drive power module 6 near the first edge.

[0052] Specifically, in response to the problem that existing chargers are inconvenient to move after adding more electronic components, this solution improves the charger's structure by installing wheels on one side of the lower housing and a back plate with a telescopic pull rod above it, allowing the charger to be moved by being pulled, reducing the burden on the user.

[0053] Specifically, the charger structure described above integrates a drive power module 6, which can perform the function of charging the battery of external devices as mentioned in the background art. Its specific circuit form and structure can vary depending on product specifications and design requirements, and the functions it needs to achieve are not the focus of this application. Here, this application uniformly refers to it as the drive power module 6 as an equivalent functional unit, which has a certain volume and mass, and is roughly rectangular in shape.

[0054] To facilitate the transport of the power supply module 6, this solution incorporates a charger housing structure on its exterior, which mainly includes a lower housing 1 and a back plate 2.

[0055] The lower housing 1 is rectangular in shape, and a wheel 3 is fixed to the lower surface of the lower housing 1 near the first edge. Figure 1 In the isometric view, the first edge appears as the edge of the back side. A pair of axle supports extend downwards from the lower surface of the lower housing 1 near this first edge. These axle supports are generally plate-shaped, vertically mounted on the lower surface of the lower housing 1, and have a pair of axle openings in the horizontal direction. Bearings are fixed in these openings, and the axles pass through the bearings and are rotatably fixed to the axle supports. Wheels 3 are fixed to the two ends of the axles via flanges and bolts, allowing the wheels to rotate.

[0056] The lower surface of the second edge of the lower housing 1, which is opposite to the first edge, is fixed with a downward-facing support leg 5. The support leg is integrally formed with the lower housing 1 by injection molding or by bolts. For example, the support leg is U-shaped and has an opening in the horizontal direction, which is fixed to the screw hole on the bottom surface of the lower housing 1 by bolts.

[0057] Normally, the support leg 5 and wheel 3 are both grounded, forming a four-point fixation.

[0058] The back plate 2 is fixed to the upper surface of the lower housing near the first edge and is arranged vertically. The back plate 2 and the lower housing 1 are integrally formed. When they are made of plastic, the back plate 2 and the lower housing 1 are formed by injection molding in one step. When they are made of metal, such as aluminum plate, they can be formed by bending.

[0059] Backplate 2 in Figure 1A pair of telescopic rods 4 are fixed on the rear side in the isometric view. The telescopic rods 4 are U-shaped, similar to the handle of a suitcase, and have a handle at the top for the user to pull.

[0060] During use, by applying a certain torque to the telescopic rod 4 with the wheel axle as the fulcrum, the support leg 5 on the other side of the lower housing 1 can be lifted off the ground. At this time, the charger can be moved relatively easily by pulling the telescopic rod. This pulling process is similar to the pulling process of a suitcase. At this time, the mass of the drive power module 6 is borne by the wheels grounded. The user only needs to provide a reverse torque against the center of gravity on the other side of the fulcrum to move the drive power module 6.

[0061] Once the device has moved to the designated position, the user releases their grip to eliminate the torque, at which point it returns to its normal state.

[0062] As can be seen from the above structure, by installing the drive power module 6 into a housing with wheels and moving it via a pull rod, the influence of the mass of the drive power module 6 can be effectively eliminated, thus achieving a simple handling process. During this process, the user only needs to counteract the reverse torque caused by the overall center of gravity of the charger on the other side of the fulcrum and the system friction force caused by the movement of the wheels.

[0063] To further reduce the reverse torque, the inventors studied the drive power module 6 and found that the main mass of the drive power module 6 designed for high current scenarios is due to the supercapacitor. Therefore, during the installation of the drive power module 6, the side of the drive power module 6 where the supercapacitor is located is positioned towards the first edge.

[0064] This setup process moves the center of gravity of the charger structure closer to the first edge where the axle is located in the horizontal projection direction, thereby reducing the lever arm length from the center of gravity to the axle and reducing the reverse torque.

[0065] This process depends solely on the placement of the capacitors in the finished drive power module 6. No changes to the wiring layout of the drive power module 6 are required. If the supercapacitor is not located at the edge of the circuit board, the center line of the circuit board can be used as a reference, and the supercapacitor can be placed as close to the first edge as possible. This placement direction only affects the magnitude of the reverse torque, and it is still less strenuous for users to move the charger directly, regardless of the placement direction.

[0066] Meanwhile, considering that to avoid the problem that after the columnar supercapacitor with large mass is disposed in the charger and pulled, the center of gravity of the charger may cross the perpendicular line of the wheel axle, causing the original reverse torque to become a torque in the same direction as the user's pulling direction, resulting in the charger tipping over in the direction of the back plate after the user releases the hand, a counterweight box 7 is additionally arranged below the driving power module 6, which is used for adjusting a corresponding number of counterweight blocks in the counterweight box to reduce the height of the center of gravity.

[0067] The counterweight block can be made of a material with a density much higher than that of the capacitor, for example, lead (11.34g / cm 3 ), which has a density much higher than that of common electrolytes and electrode materials, so that the center of gravity can be adjusted with a small volume, and the overall center of gravity of the charger will not be further increased after the driving power module 6 is raised.

[0068] The counterweight box 7 itself is a hollow cuboid structure, in which grid-shaped grooves are arranged for placing and fixing a predetermined number of lead blocks to adjust the center of gravity. Since the specifications and masses of different driving power modules 6 are different in actual products, the weight and number of the corresponding lead blocks can be adjusted as required, so as to ensure that the center of gravity will not cross the fulcrum within the range of typical pulling angles (90°-60°), and at the same time, a smaller number of lead blocks can reduce the magnitude of the reverse torque. Similarly, this process will only have a certain impact on the magnitude of the reverse torque. Compared with the relatively heavy charger as a whole, it is more labor-saving for the user to pull the charger than to carry it directly.

[0069] In one embodiment, a front housing 8 is further included;

[0070] A pair of front housing fixing plates 21 extend from the side surface of the back plate 2 toward the direction of the second edge;

[0071] The front housing 8 is C-shaped in the top view direction, and the front housing 8 is disposed on the upper surface of the lower housing 1;

[0072] The two side surfaces of the front housing 8 are respectively connected and fixed to the front housing fixing plates 21 by bolts.

[0073] Specifically, in order to achieve a good protection effect on the internal driving power module 6, a C-shaped front housing 8 is further provided in this embodiment to be fixed with the lower housing 1 and the back plate 2, so as to completely enclose the internal driving power module 6 and the counterweight box 7 to achieve a good protection effect.

[0074] Wherein, the lower housing 1 further includes a third edge and a fourth edge disposed opposite to each other;

[0075] The third edge and the fourth edge are arranged perpendicularly to the first edge;

[0076] Front housing fixing holes are machined on the side surfaces of the third edge and the fourth edge;

[0077] Holes are machined on the bottom of the two sides of the front housing 8 corresponding to the positions of the front housing mounting holes, and are fixedly connected to the front housing mounting holes by connectors.

[0078] The front housing 8 has holes machined on its two vertical sides and two bottom sides. The holes on the two vertical sides are connected and fixed to the holes on the front housing fixing plate 21 by bolts. The holes on the two bottom sides are connected and fixed to the holes on the third and fourth edges of the lower housing 1 by bolts.

[0079] In one embodiment, heat dissipation holes 81 are machined on the upper part of the two sides of the front housing 8.

[0080] Specifically, in order to facilitate heat dissipation of the internal drive power module 6, heat dissipation holes 81 are also machined on the upper part of the two sides of the front housing 8 in this embodiment. The heat dissipation holes 81 are a series of openings obtained by stamping the front housing 8. They can be in the form of through holes, or they can be a combination of a series of downward inclined plates and inner openings obtained by stamping and extrusion. Their specific shape is not limited.

[0081] In one embodiment, an upper housing 9 is also included;

[0082] The inner side of the upper housing 9 is an open box shape, which is fitted onto the outer side of the front housing 8 and the back plate 2;

[0083] The bottom of the upper housing 9 has horizontally machined fixing holes corresponding to the first edge, third edge and fourth edge;

[0084] The front housing 8 and the back plate 2 have holes machined at the locations corresponding to the fixing holes of the upper housing, and are connected to and fixed to the upper housing through connectors.

[0085] Specifically, in order to enclose the drive power module 6, an upper shell 9 is also designed in this embodiment. After the upper shell 8 is assembled with the lower shell 1 and the back plate 2, a box-shaped structure with an open top is formed. At this time, the upper shell 9 is fitted on top and the fixing holes are aligned and bolted in place.

[0086] In one embodiment, the upper housing 9 is slightly lower on the side near the second edge than on the side near the first edge, so as to form a slope on the top surface of the upper housing toward the second edge;

[0087] The sloping surface serves as a control panel with multiple buttons fixed on it.

[0088] A button panel 91 is provided on the inner side of the upper housing corresponding to the button positions.

[0089] Specifically, in an embodiment where the power supply module 6 requires the setting of switches and adjustment of control parameters, in this embodiment, the upper housing 9 is slightly lower on the side near the second edge than on the side near the first edge, so that a slope facing the second edge is formed on the top surface of the upper housing, which is used as the operation panel of the keypad 91.

[0090] The keypad 91 is a circuit board that integrates multiple key switches. It is connected to the drive power module 6 through lines and provides corresponding key signals. For example, it is similar to the combination of power processing circuit (equivalent to drive power module 6) and adjustment trigger component (equivalent to keypad 91) in CN202121338880.5. Its circuit structure is not the focus of protection in this application.

[0091] The circuit board of the keypad 91 has openings, which are fixed to the inside of the upper housing 9 by studs or other equivalent devices, so that the switch assembly on the keypad 91 is exposed to the upper housing 9 and can be touched by the user.

[0092] In one embodiment, a telescopic rod is fixed to the bottom of the back panel. The telescopic rod is U-shaped and extends vertically upward. The telescopic rod 4 has at least two telescopic joints that allow the user to change its length. The top of the telescopic rod 4 has a handle. The specific structure can be implemented with reference to CN201910261856.7.

[0093] In one embodiment, a pair of winding fixing plates 21 are fixed to the outer side of the back plate 2;

[0094] The cross-section of the winding fixing plate 21 is Z-shaped, and the first plane of the winding fixing plate is fixedly connected to the back plate;

[0095] The second plane of the winding fixing plate 21 is fixed with the positive terminal 22 and the negative terminal 23 respectively.

[0096] Specifically, to facilitate circuit output, a pair of winding fixing plates 21 are provided on the back plate 2 in this embodiment. The cross-section of the winding fixing plate 21 is Z-shaped. The first plane of the winding fixing plate is fixedly connected to the back plate 2, and the second plane is respectively fixed with the positive terminal 22 and the negative terminal 23.

[0097] The winding fixing plate 21 is integrally formed by injection molding, and the inner side is provided with an opening for fixing to the back plate 2 by bolts. The positive terminal 22 and the negative terminal 23 are respectively connected to the second plane by a tenon.

[0098] The positive terminal 22 and the negative terminal 23 each have a V-shaped base on which the positive and negative wires are mounted. One end of the positive wire passes through an opening in the back plate 2 and connects to the drive power module 6. The other end is a cable of a certain length with a lug at the top for connection to the charging device. Similarly, one end of the negative wire passes through an opening in the back plate 2 and connects to the drive power module 6. The other end is a cable of a certain length with a lug at the top for connection to the charging device.

[0099] The longer portions of the positive and negative wires can be wound onto the winding fixing plate 21 for storage.

[0100] In one embodiment, a three-pin power socket is fixed on the back plate 2.

[0101] Specifically, in order to achieve better output effect, a hole is opened at a predetermined position on the back plate 2 and a three-core power socket is fixed therein. The inner side of the three-core power socket is connected to the corresponding terminal of the drive power module 6 through a cable, including the live wire, neutral wire and ground wire. The outer side is connected to the external mains power through a plug.

[0102] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable charger structure, characterized in that, comprising a lower housing and a back plate; the lower housing is in the shape of a rectangular plate, and wheels are fixed to the lower surface of the first edge of the lower housing; the back plate is fixed to the upper surface of the lower housing close to the first edge and arranged along the vertical direction; a telescopic pull rod extending upward is fixed to the outer side of the back plate; downward support legs are fixed to the lower surface of the second edge of the lower housing opposite to the first edge; a counterweight box is arranged on the upper surface of the lower housing, and a plurality of counterweight blocks are fixed at predetermined positions in the counterweight box; a driving power module is arranged above the counterweight box, and a plurality of supercapacitors are fixed on the side of the driving power module close to the first edge.

2. The charger structure according to claim 1, characterized in that, further comprising a front housing; a pair of front housing fixing plates extend from the side face of the back plate toward the second edge; the front housing is in a U-shape when viewed from above, and the front housing is arranged on the upper surface of the lower housing; two side faces of the front housing are respectively fixedly connected to the front housing fixing plates through bolts.

3. The charger structure according to claim 2, characterized in that, the lower housing further comprises a third edge and a fourth edge disposed opposite to each other; the third edge and the fourth edge are arranged perpendicular to the first edge; front housing fixing holes are machined on the side faces of the third edge and the fourth edge; holes are machined at positions corresponding to the front housing fixing holes at the bottoms of the two side faces of the front housing, and are fixedly connected to the front housing fixing holes through connecting members.

4. The charger structure according to claim 2, characterized in that, heat dissipation holes are machined in the upper parts of the two side faces of the front housing.

5. The charger structure according to claim 3, characterized in that, further comprising an upper housing; the inner side face of the upper housing is in the shape of an open box, and is sleeved on the outer side of the front housing and the back plate; upper housing fixing holes are machined in the horizontal direction at positions of the bottom of the upper housing corresponding to the first edge, the third edge and the fourth edge; holes are machined in the front housing and the back plate at positions corresponding to the upper housing fixing holes, and the upper housing is connected and fixed through connecting members.

6. The charger structure according to claim 5, characterized in that, the side of the upper housing close to the second edge is slightly lower than the side close to the first edge, so as to form an inclined surface facing the second edge on the top face of the upper housing; a plurality of keys are fixed on the inclined surface serving as a control panel; a key board is arranged at a position on the inner side of the upper housing corresponding to the keys.

7. The charger structure according to claim 2, characterized in that, the telescopic pull rod is U-shaped and extends upward along the vertical direction, and a telescopic section is arranged in the middle of the telescopic pull rod.

8. The charger structure according to claim 2, characterized in that, a pair of winding fixing plates are fixed to the outer side of the back plate; the section of the winding fixing plate is Z-shaped, and the first plane of the winding fixing plate is fixedly connected with the back plate; a positive terminal post and a negative terminal post are respectively fixed on the second plane of the winding fixing plate.

9. The charger structure according to claim 1, characterized in that, a three-core power jack is fixed on the back plate.

Images