A flip plug charger

Abstract

This application relates to a flip-type plug charger, which includes a housing, a plug assembly, a hinge shaft, a spring, a first locking ring, a second locking ring, and a circuit board. The housing has a receiving groove and a circular groove with a strip-shaped hole. The plug assembly is placed in the receiving groove and connected by the hinge shaft. The spring is sleeved on the hinge shaft to provide preload. The first locking ring is axially movable and has a limiting block on its side wall that limits its position within the strip-shaped hole. The second locking ring is fixed to the plug assembly. The opposite end faces of the two locking rings are respectively provided with two V-shaped protrusions and V-shaped grooves. Under the action of the spring, the V-shaped protrusions and V-shaped grooves of the two rings engage and lock together to form a rigid interlocking structure. The circuit board is provided with an elastic conductive clip, and the housing has an opening so that the flipped plug assembly can be inserted into the conductive clip to conduct electricity. This application realizes that the V-shaped protrusions and V-shaped grooves can be automatically interlocked by moving the plug to a critical angle, which saves effort. The interlocking structure combined with the spring preload achieves mechanical self-locking, effectively resisting vibration or impact.

Description

Technical Field

[0001] This application relates to the technical field of chargers, and more specifically, to a flip-type plug charger. Background Technology

[0002] With the widespread use of portable electronic devices, the demand for miniaturized and portable chargers has become increasingly prominent. Traditional plug-type chargers typically use a fixed, exposed plug structure, which is prone to snagging or bumping into other items when carried, posing inconvenience and the risk of plug damage. To improve this problem, flip-up, concealed plug chargers have emerged on the market.

[0003] In related technologies, the charger includes a housing and a plug assembly connected to the housing via a hinge shaft. A circuit board is housed inside the housing. The circuit board integrates a flexible conductive clip and a charging connector assembly for connecting electrical devices. A recessed receiving groove is provided on the side wall of the housing to accommodate the socket, and a torsion spring is installed at the hinge shaft to provide a return force. Initially, the plug assembly is hidden within the receiving groove. During use, the plug assembly is manually moved to overcome the torsion spring force and rotate around the hinge shaft until the plug's metal pins are engaged and fixed within the flexible conductive clip on the circuit board. At this point, the plug assembly is connected to the circuit board via the flexible conductive clip to draw power. After charging is complete, moving the plug again disengages it from the flexible conductive clip, and the torsion spring causes the plug to automatically return to the receiving groove. Using the aforementioned technologies, during the flipping process, the plug needs to be continuously pushed until it is fully engaged with the elastic conductive clip. Otherwise, the plug may easily detach from the conductive clip due to the rebound of the torsion spring, resulting in power failure. Since the force required for the torsion spring to twist in the later stages is greater, it is more difficult for the user to twist. Furthermore, the plug assembly is fixed solely by the clamping force of the elastic conductive clip. In the event of vibration or accidental contact, the torsion spring's tendency to return to its original position can easily cause the plug assembly to loosen from the conductive clip, resulting in charging interruption and posing a safety hazard. Utility Model Content

[0004] In order to solve the problem that the plug assembly of the charger is difficult to twist and is easy to come loose from the conductive clip in the related technology, this application provides a flip-type plug charger.

[0005] A flip-type plug charger, comprising:

[0006] The outer shell has a recessed receiving groove on its outer side and a circular groove communicating with the receiving groove on its side. The sidewall of the circular groove is provided with a strip-shaped hole extending along its axial direction.

[0007] A pin assembly disposed within the receiving groove;

[0008] A hinge shaft, one end of which is fixedly connected to the pin assembly, and the other end of which passes through the circular groove;

[0009] A spring, which is sleeved on the hinge shaft and has one end abutting against the bottom wall of the circular groove;

[0010] A first locking ring and a second locking ring are provided. The first locking ring is sleeved on the hinge shaft to allow axial movement along the hinge shaft. The second locking ring is sleeved on the hinge shaft and located on the side of the first locking ring away from the spring, and is fixedly connected to the pin assembly. The end face of the first locking ring facing the second locking ring has two first V-shaped protrusions, and two first V-shaped grooves are formed between the two first V-shaped protrusions. The end face of the second locking ring facing the first locking ring has two second V-shaped protrusions, and two second V-shaped grooves are formed between the two second V-shaped protrusions. Under the action of spring preload, the two first V-shaped protrusions are respectively engaged in the two second V-shaped grooves formed on the end face of the second locking ring, and at the same time, the two second V-shaped protrusions are respectively engaged in the two first V-shaped grooves formed on the end face of the first locking ring, forming an interlocking structure. A limit block is provided on the side wall of the first locking ring. The limit block passes through the strip hole, and its thickness matches the width of the strip hole, so that the first locking ring can only move axially along the hinge shaft.

[0011] The circuit board is disposed inside the housing, and has an elastic conductive clip at the position corresponding to the pin assembly. The housing has a communication opening between the pin assembly and the circuit board, so that the pin assembly can be inserted into the elastic conductive clip after being flipped up to achieve electrical connection. The circuit board is also provided with a charging connector group for connecting electrical equipment, and the housing has a slot at the corresponding position to communicate the charging connector group with the outside.

[0012] Preferably, the tops of the first V-shaped protrusion and the second V-shaped protrusion are both transitioned with arc surfaces, and the bottoms of the first V-shaped groove and the second V-shaped groove are also transitioned with arc surfaces.

[0013] Preferably, the outer edges of both the first V-shaped protrusion and the second V-shaped protrusion are rounded.

[0014] Preferably, the pin assembly includes a first insulating base and two flat pins. The two flat pins are inserted and fixed into the first insulating base and pass through the first insulating base. The two flat pins are arranged in parallel. The hinge shaft is connected to one side of the first insulating base and is arranged perpendicular to the flat pins. A first cylindrical protrusion is provided on the other side of the first insulating base. The core of the first cylindrical protrusion and the core of the hinge shaft are on the same straight line. The outer shell also has a first slot on the side of the receiving groove away from the circular groove. The first cylindrical protrusion is inserted into the first slot. The number of elastic conductive clips is at least two, and the two elastic conductive clips are respectively aligned with the two flat pins.

[0015] Preferably, the pin assembly further includes a second insulating base and a round pin. The second insulating base is located on one side of the first insulating base, and both sides of the second insulating base are provided with second cylindrical protrusions. The axis of the two cylindrical protrusions is parallel to the axis of the first cylindrical protrusion. The opposite side walls of the outer shell and the receiving groove are provided with second slots that align with the second cylindrical protrusions. The second cylindrical protrusions are inserted into the second slots to hinge the second insulating base to the outer shell. The round pin is inserted and fixed on the second insulating base and passes through the second insulating base. The round pin is located between the two flat pins and is parallel to the flat pins. The number of elastic conductive clips is three, and the three elastic conductive clips are respectively aligned with two flat pins and one round pin.

[0016] Preferably, the first insulating seat has a recessed groove at the position corresponding to the round pin, the recessed groove penetrates the first insulating seat, and the round pin passes through the recessed groove. The side of the first insulating seat away from the second insulating seat has a recessed clearance groove, the clearance groove is aligned with the round pin to avoid the round pin when the first insulating seat is flipped.

[0017] Preferably, the charging connector assembly includes at least one USB connector and at least one Type-C connector.

[0018] The beneficial technical effects of this application are as follows: When the user moves the plug assembly, the pin assembly drives the hinge shaft to rotate, forcing the V-shaped protrusion of the first locking ring to slide along the inclined surface of the V-shaped groove of the second locking ring. At this time, the inclined surface generates an axial force, pushing the compression spring of the first locking ring to move axially backward until the protrusion slides past the top of the groove. After the V-shaped protrusion passes the top of the groove, the spring releases its stored energy, pushing the first locking ring forward, so that the V-shaped protrusion is embedded in the bottom of the opposite V-shaped groove, forming a cross-engagement. The user does not need to apply continuous force, and the spring preload continuously applies axial pressure, making the V-shaped protrusion tightly wedged with the bottom of the groove. During vibration, the V-shaped protrusion needs to overcome the friction of the inclined surface and the spring force to disengage, and the stability is much higher than that of traditional elastic clamping. The limiting block of the first locking ring is inserted into the strip hole, restricting its circumferential rotation and allowing only axial movement, making it difficult for the first locking ring to rotate out of place, avoiding the jamming caused by misalignment between the V-shaped protrusion and the V-shaped groove. This application utilizes a V-shaped tooth interlocking structure, allowing the user to automatically lock the plug assembly by simply toggling it to the critical angle once, eliminating the need for continuous force against the spring and significantly reducing operational intensity. The rigid interlocking of the V-shaped teeth and V-groove, combined with the spring preload, forms a mechanical self-locking mechanism. Even under vibration or impact, the plug assembly can remain securely in operation, preventing charging interruptions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a flip-type plug charger according to this embodiment.

[0020] Figure 2 This is a cross-sectional view of a flip-type plug charger according to this embodiment.

[0021] Figure 3 This is a schematic diagram of the outer casing in this embodiment.

[0022] Figure 4 This is a schematic diagram of the connection structure of the pin assembly, hinge shaft, spring, first locking ring, second locking ring, elastic conductive clip, and charging connector assembly in this embodiment.

[0023] Figure 5 This is a schematic diagram of the connection structure of the first insulating base, flat pin, hinge shaft, and second locking ring in this embodiment.

[0024] Figure 6 This is a schematic diagram of the structure of the first locking ring in this embodiment.

[0025] Reference numerals: 1. Outer shell; 11. Receiving groove; 14. Communicating opening; 15. First slot; 16. Second slot; 2. Pin assembly; 21. First insulating base; 211. First cylindrical protrusion; 212. Recessed groove; 213. Clearance groove; 22. Flat pin; 23. Second insulating base; 231. Second cylindrical protrusion; 24. Round pin; 3. Hinge shaft; 4. Spring; 5. First locking ring; 51. Limiting block; 52. First V-shaped protrusion; 53. First V-shaped groove; 6. Second locking ring; 61. Second V-shaped protrusion; 62. Second V-shaped groove; 7. Circuit board; 8. Elastic conductive clip; 81. Metal connector; 82. Pin; 83. Elastic metal sheet; 9. Charging connector assembly. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Reference Figure 1-6A flip-type plug charger includes a housing 1, a plug assembly 2, a hinge shaft 3, a spring 4, a first locking ring 5, a second locking ring 6, and a circuit board 7. The outer side of the housing 1 is recessed with a receiving groove 11, and the plug assembly 2 is disposed in the receiving groove 11 for concealment. The embedded and concealed design of the plug assembly 2 reduces the overall size of the charger and allows the plug assembly 2 to hook onto objects for easy carrying. The housing 1 has a circular groove on the side of the receiving groove 11 that communicates with it. The side wall of the circular groove has a strip-shaped hole extending along its axial direction. One end of the hinge shaft 3 is fixedly connected to the plug assembly 2, and the other end passes through the circular groove. The plug assembly 2 is rigidly connected to the hinge shaft 3 and rotates with the housing 1. The plug assembly 2 can rotate 0-90 degrees around the axis of the hinge shaft 3 to stand up for easy plugging into an external power socket. Spring 4 is sleeved on the hinge seat, with one end abutting against the bottom wall of the circular groove. First locking ring 5 is sleeved on hinge shaft 3 and moves axially along hinge shaft 3. Limiting block 51 is provided on the side wall of first locking ring 5, the thickness of which matches its width. Limiting block 51 is inserted into the slotted hole to limit the rotation of first locking ring 5. Second locking ring 6 is sleeved on hinge shaft 3 and located on the side of first locking ring 5 away from spring 4. Second locking ring 6 is connected to pin assembly 2. Two locking rings are provided on the end face of first locking ring 5 facing second locking ring 6. The first V-shaped protrusion 52 forms two first V-shaped grooves 53 between the two first V-shaped protrusions 52. The end face of the second locking ring 6 facing the first locking ring 5 is provided with two second V-shaped protrusions 61, and the two second V-shaped protrusions 61 form two second V-shaped grooves 62 between the two second V-shaped protrusions 61. Under the preload of the spring 4, the two first V-shaped protrusions 52 are respectively engaged in the two second V-shaped grooves 62 formed on the end face of the second locking ring 6, and the two second V-shaped protrusions 61 are respectively engaged in the two first V-shaped grooves 53 formed on the end face of the first locking ring 5, forming an interlocking structure. The circuit board 7 is disposed inside the housing 1, and an elastic conductive clip 8 is provided at the position corresponding to the pin assembly 2. The housing 1 is provided with a connecting opening 14 between the pin assembly 2 and the circuit board 7, so that the pin assembly 2 after being flipped up can be inserted into the elastic conductive clip 8 to achieve electrical connection with the circuit board 7. The circuit board 7 is also provided with a charging connector group 9 for connecting electrical equipment. The housing 1 is provided with a slot at the corresponding position to allow the charging connector group 9 to communicate with the outside. In the above structure, when the user moves the pin assembly 2, the pin assembly 2 drives the hinge shaft 3 to rotate, forcing the V-shaped protrusion of the first locking ring 5 to slide along the inclined surface of the V-shaped groove of the second locking ring 6. At this time, the inclined surface generates an axial component force, pushing the first locking ring 5 to compress the spring 4 and move it axially backward until the protrusion slides past the top of the groove. After the V-shaped protrusion passes the top of the groove, the spring 4 releases its stored energy, pushing the first locking ring 5 forward, so that the V-shaped protrusion is embedded into the bottom of the opposite V-shaped groove, forming a cross-engagement. The user does not need to apply continuous force, and the preload of the spring 4 continuously applies axial pressure, so that the V-shaped protrusion is tightly wedged into the bottom of the groove.During vibration, the V-shaped protrusions must overcome the friction of the inclined plane and the force of spring 4 to disengage, resulting in stability far exceeding that of traditional elastic clamping. The limiting block 51 of the first locking ring 5 engages within the slotted hole, restricting its circumferential rotation and allowing only axial movement. This prevents the first locking ring 5 from easily rotating out of alignment, avoiding jamming caused by misalignment between the V-shaped protrusions and the V-groove. Through the V-shaped protrusion interlocking structure, the user only needs to move the plug assembly to the critical angle once for automatic locking, eliminating the need for continuous force against spring 4 and significantly reducing operational intensity. The rigid interlocking of the V-shaped protrusions and V-groove, combined with the preload of spring 4, forms a mechanical self-locking mechanism. Even under vibration or impact, the charging plug assembly can remain stably operational, preventing charging interruptions.

[0028] Reference Figure 5 and Figure 6 Furthermore, in order to reduce sliding friction resistance and improve engagement smoothness, the tops of the first V-shaped tooth 52 and the second V-shaped tooth 61 are both transitioned with arc surfaces, and the bottoms of the first V-shaped groove 53 and the second V-shaped groove 62 are also transitioned with arc surfaces. The outer edges of the first V-shaped tooth 52 and the second V-shaped tooth 61 are rounded.

[0029] Reference Figure 4 Furthermore, the plug assembly 2 includes a first insulating base 21 and two flat plugs 22. The first insulating base 21 has a first through hole that penetrates it, and the size of the first through hole matches that of the flat plugs 22. The two flat plugs 22 are respectively inserted into the first insulating base 21 through the two first through holes and are tightened together with the first insulating base 21 to achieve fixation. The two flat plugs 22 penetrate the first insulating base 21 and are arranged in parallel and symmetrically. The hinge shaft 3 is connected to one side of the first insulating base 21 and is arranged perpendicular to the flat plugs 22. The number of elastic conductive clips 8 is at least two, and the two elastic conductive clips 8 are respectively aligned with the two flat plugs 22. The elastic conductive clip 8 includes a metal connector 81, and a pin 82 is provided at the bottom of the metal connector 81. The circuit board 7 is provided with a pin hole that matches the pin 82. The pin 82 is inserted into the pin hole and soldered to the circuit board 7 to realize the metal connector. 81 is electrically connected to the circuit board 7. Two symmetrically arranged elastic metal pieces 83 are formed on one side of the connector. There are two gaps between the two elastic metal pieces 83, and the gap on the front side is smaller than the gap on the rear side. By the user moving one end of the flat plug 22 away from the elastic conductive clip 8, the flat plug 22 is flipped up, so that the other end of the flat plug 22 swings in an arc and is inserted between the two elastic metal pieces 83. When the flat plug 22 reaches the front gap of the two elastic metal pieces 83, it opens the two elastic metal pieces 83 and is accommodated in the rear gap of the two elastic metal pieces 83. When the two elastic metal pieces 83 are in the rear gap, the two elastic metal pieces 83 reset contact and lock the flat plug 22, thereby fixing the flat plug 22 and electrically connecting the flat plug 22 to the circuit board 7. The two flat plugs 22 are respectively connected to the neutral wire and the live wire of the external power socket.

[0030] Reference Figure 3 and Figure 4 Furthermore, in order to make the pin assembly 2 and the housing 1 have a more stable hinge effect, a first cylindrical protrusion 211 is provided on the other side of the first insulating base 21. The core of the first cylindrical protrusion 211 and the core of the hinge shaft 3 are on the same straight line. The housing 1 and the end of the receiving groove 11 away from the circular groove are also provided with a first slot 15. The first cylindrical protrusion 211 is inserted into the first slot 15 so that the housing 1 can further rotate and support the first insulating base 21. The flipping of the flat pin 22 and the first insulating base 21 is smoother and more stable.

[0031] Reference Figure 3 and Figure 4 Furthermore, to match the British standard three-hole socket, the plug assembly 2 also includes a second insulating base 23 and round pins 24. The second insulating base 23 is located on one side of the first insulating base 21, and second cylindrical protrusions 231 are provided on both opposite sides of the second insulating base 23. The axis of the second cylindrical protrusion 231 is parallel to the axis of the first cylindrical protrusion 211. Second slots 16 for aligning the second cylindrical protrusions 231 are provided on both opposite side walls of the housing 1 and the receiving groove 11. Insert the second insulating seat 23 into the second slot 16 to hinge it to the outer shell 1. The second slot 16 is provided with a torsion spring connecting the second cylindrical protrusion 231. The second insulating seat 23 is provided with a second through hole. The round pin 24 passes through the second through hole and is tightened and fixed to the second insulating seat 23. The round pin 24 is located between the two flat pins 22 and is parallel to the flat pins 22. There are three elastic conductive clips 8. The three elastic conductive clips 8 are respectively aligned with the two flat pins 22 and one round pin 24. To further reduce the size and enable the selection of the round pin 24, the first insulating base 21 is recessed with a groove 212 corresponding to the position of the round pin 24. The groove 212 penetrates the first insulating base 21, and the round pin 24 is hidden in the groove 212, reducing the overall size of the pin assembly 2. In addition, the side of the first insulating base 21 away from the insulating base is recessed with a relief groove 213. The relief groove 213 is aligned with the round pin 24. The relief groove 213 prevents the first insulating base 21 from interfering with the round pin 24 when it is flipped, so that the round pin 24 does not move with the first insulating base 21 when it is flipped, thereby enabling selective use.

[0032] Reference Figure 3 Furthermore, the charging connector group 9 includes two USB connectors and two Type-C connectors, enabling simultaneous power supply to multiple types of electrical devices.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flip plug charger characterized by, include: The outer shell has a recessed receiving groove on its outer side and a circular groove communicating with the receiving groove on its side. The sidewall of the circular groove is provided with a strip-shaped hole extending along its axial direction. A pin assembly disposed within the receiving groove; A hinge shaft, one end of which is fixedly connected to the pin assembly, and the other end of which passes through the circular groove; A spring, which is sleeved on the hinge shaft and has one end abutting against the bottom wall of the circular groove; A first locking ring and a second locking ring are provided. The first locking ring is sleeved on the hinge shaft to allow axial movement along the hinge shaft. The second locking ring is sleeved on the hinge shaft and located on the side of the first locking ring away from the spring, and is fixedly connected to the pin assembly. The end face of the first locking ring facing the second locking ring has two first V-shaped protrusions, and two first V-shaped grooves are formed between the two first V-shaped protrusions. The end face of the second locking ring facing the first locking ring has two second V-shaped protrusions, and two second V-shaped grooves are formed between the two second V-shaped protrusions. Under the action of spring preload, the two first V-shaped protrusions are respectively engaged in the two second V-shaped grooves formed on the end face of the second locking ring, and at the same time, the two second V-shaped protrusions are respectively engaged in the two first V-shaped grooves formed on the end face of the first locking ring, forming an interlocking structure. A limit block is provided on the side wall of the first locking ring. The limit block passes through the strip hole, and its thickness matches the width of the strip hole, so that the first locking ring can only move axially along the hinge shaft. The circuit board is disposed inside the housing, and has an elastic conductive clip at the position corresponding to the pin assembly. The housing has a communication opening between the pin assembly and the circuit board, so that the pin assembly can be inserted into the elastic conductive clip after being flipped up to achieve electrical connection. The circuit board is also provided with a charging connector group for connecting electrical equipment, and the housing has a slot at the corresponding position to communicate the charging connector group with the outside.

2. A flip plug charger according to claim 1, wherein: The tops of the first V-shaped protrusion and the second V-shaped protrusion are both transitioned with arc surfaces, and the bottoms of the first V-shaped groove and the second V-shaped groove are also transitioned with arc surfaces.

3. A flip plug charger as claimed in claim 1, wherein: The outer edges of both the first V-shaped protrusion and the second V-shaped protrusion are rounded.

4. The flip plug charger of claim 1, wherein: The plug assembly includes a first insulating base and two flat plugs. The two flat plugs are inserted and fixed into the first insulating base and pass through the first insulating base. The two flat plugs are arranged in parallel. The hinge shaft is connected to one side of the first insulating base and is arranged perpendicular to the flat plugs. A first cylindrical protrusion is provided on the other side of the first insulating base. The core of the first cylindrical protrusion and the core of the hinge shaft are on the same straight line. The outer shell also has a first slot on the side of the receiving groove away from the circular groove. The first cylindrical protrusion is inserted into the first slot. The number of elastic conductive clips is at least two, and the two elastic conductive clips are respectively aligned with the two flat plugs.

5. A flip plug charger as claimed in claim 4, wherein: The pin assembly further includes a second insulating base and a round pin. The second insulating base is located on one side of the first insulating base, and both sides of the second insulating base are provided with second cylindrical protrusions. The axis of the two cylindrical protrusions is parallel to the axis of the first cylindrical protrusion. The outer shell and the opposite side walls of the receiving groove are provided with second slots that align with the second cylindrical protrusions. The second cylindrical protrusions are inserted into the second slots to hinge the second insulating base to the outer shell. The round pin is inserted and fixed on the second insulating base and passes through the second insulating base. The round pin is located between the two flat pins and is parallel to the flat pins. There are three elastic conductive clips, which are respectively aligned with two flat pins and one round pin.

6. A flip plug charger as claimed in claim 5, wherein: The first insulating base has a recessed groove at the position corresponding to the round pin. The recessed groove passes through the first insulating base, and the round pin passes through the recessed groove. The side of the first insulating base away from the second insulating base has a recessed clearance groove. The clearance groove is aligned with the round pin to avoid the round pin when the first insulating base is flipped.

7. The flip plug charger of claim 1, wherein: The charging connector assembly includes at least one USB connector and at least one Type-C connector.

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