Power converter with folding pins
By designing the pin assembly with a rotary flip folding, the problem of large and vulnerable exposed space and vulnerability of the power converter pins is solved, the convenience of the pins and current passing ability are improved, and the functions of high power and fast charging are achieved.
Patent Information
- Application Number
- CN202421094207.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing power converters have large exposed pins and are prone to damage, and the flipped pin contact area is small, limiting current throughput.
A pin assembly with a connecting flip folding is designed. Through the combination of bracket, pin, connecting piece, copper sleeve and elastic piece, the synchronous flip and stable connection of the pins are achieved, thereby increasing the electrical contact area.
It solves the problems of large space and easy loss of exposed pins, improves the convenience of pins and current passing ability, and realizes the functions of high power and fast charging.
Smart Images
Figure CN222483845U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a power converter with foldable pins. Background Art
[0002] The exposed pins of a power converter take up a large amount of space and are easily scratched by foreign objects, especially pockets and cloth bags, so it is necessary to consider folding or storing the pins. The existing folding design allows the pins to be flipped and stored in a groove on the surface of the shell, and then manually flipped up when in use. However, this design requires manually flipping the pins into place one by one, which is more troublesome to operate; and it does not provide a force to maintain the pins in the plugged position, making the pins easily rotated by external forces or their own gravity, which is not conducive to plugging and aligning. In addition, the existing flip-type pins only rely on a small area at the end of the pins to connect to the power, and the contact area is small, resulting in a significant limitation on the current passing through. Utility Model Content
[0003] The present invention provides a power converter with foldable pins, which enables the pins to be flipped and folded in a linked manner. This is achieved specifically through the following technical means:
[0004] A power converter with foldable pins includes a housing, a circuit board, and a pin assembly. The pin assembly is installed in the housing and extends from the back side of the housing. The front side of the housing is provided with several groups of sockets. The pin assembly includes a bracket and a first pin, a second pin, and a linkage member provided on the bracket. The first pin and the second pin are respectively pivotally connected to the bracket. The linkage member is respectively connected to the first pin and the second pin to enable the two to flip synchronously. A first contact post is provided at the base of the first pin, and a second contact post is provided at the base of the second pin. The bracket is provided with copper sleeves that respectively adapt to the first contact post and the second contact post. When the pins flip from the inside of the housing to the outside of the housing, the first contact post and the second contact post respectively fall into and contact the corresponding copper sleeves.
[0005] In one or more embodiments of the present invention, the base of the first pin has a first pivot axis and a first connecting axis extending laterally, the base of the second pin has a second pivot axis and a second connecting axis extending laterally, the back side of the shell has a receiving groove for storing the first pin and the second pin, each receiving groove has a docking port connected to the interior of the shell, the first pin and the second pin respectively pass through the docking port from the interior of the shell, and the first pivot axis and the second pivot axis respectively pivotally cooperate with the shell at the docking port so that the pins can be flipped and folded into the receiving groove or flipped out of the receiving groove.
[0006] In one or more embodiments of the present invention, the first pin is arranged between the two second pins, and the flipping directions of the first pin and the second pin are opposite; the first pivot shaft is transversely provided on both sides of the base of the first pin, the end of the first pivot shaft is eccentrically provided with a first hanging column, and the inner side of the base of the first pin is provided with the first connecting shaft; the second pin is transversely provided on both sides of the base of the second pin, the end of the outer section of the second pivot shaft is eccentrically provided with a second hanging column, and the inner side of the base of the second pin is provided with the second connecting shaft; the first hanging column and the second hanging column are connected by an elastic member so that the elastic member provides a torque to reset the pin to the plugging position or the storage position.
[0007] In one or more embodiments of the present invention, the linkage includes two parallel vertical plates, one end of the vertical plate is provided with a first axial hole movably connected to the first linkage shaft, and the other end of the vertical plate is provided with a second axial hole movably connected to the second linkage shaft.
[0008] In one or more embodiments of the present invention, the linkage also includes a jumper plate connecting the two vertical plates at the bottom, the bracket is provided with a linkage groove for accommodating the linkage, the linkage moves along the linkage groove, and a protrusion is provided in the linkage groove for contacting the jumper plate to lift the position of the linkage.
[0009] In one or more embodiments of the present invention, the copper sleeve includes an electrical contact piece for connecting to a circuit board, and two clips for connecting to a pin; a clamping portion is formed between the two clips, an introduction portion is provided between the clamping portion and the end of the clip, a limiting portion is provided between the clamping portion and the base of the clip, and the end of the clip is outwardly flared.
[0010] In one or more embodiments of the present invention, an AC jack and a plurality of DC jacks are provided on the shell, and an AC socket corresponding to the AC jack and a DC socket corresponding to the DC jack are provided on the circuit board.
[0011] Compared with the prior art, the excellence of this utility model is reflected in:
[0012] 1) The flip-and-storage design of the plug overcomes the problems of traditional products with exposed plugs, which take up a lot of space and are easily scratched by foreign objects, making it easier to store and carry. Furthermore, the elastic member applies force to the plug to assist in the pin flipping process. The user simply moves the plug away from the receiving slot by a certain angle, and the elastic member applies force to the plug, causing the pin to automatically spring up to the plugging position. After moving the plug away from the plugging position by a certain angle, the elastic member automatically flips the pin back into the storage position. Furthermore, the interlocking structure between the pins allows all pins to flip synchronously between the plugging and storage positions, providing a good user experience.
[0013] 2) The linkage is an integral piece consisting of two vertical plates and a cross-over plate, thereby making the connection structure of the pin assembly, which is assembled with the first pin, the second pin, and the elastic member, stable (not easy to fall apart). During assembly, the pin assembly can be assembled first and then embedded in the base plate as a whole, which is convenient for workers to operate.
[0014] 3) The coordinated structure of the copper sleeve and the contact column effectively ensures the electrical contact area, enabling large currents to pass through, providing a basis for the power converter to achieve high power and fast charging. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the three-dimensional structure of the power converter (front side).
[0016] Figure 2 Schematic diagram of the three-dimensional structure of the power converter (back side).
[0017] Figure 3 This is a schematic diagram of the disassembled structure of the power converter.
[0018] Figure 4 Schematic diagram of the back shell structure of the power converter.
[0019] Figure 5 Schematic diagram of the assembled structure of the pin assembly.
[0020] Figure 6 Schematic diagram of the exploded structure of the pin assembly.
[0021] Figure 7 It is a schematic three-dimensional cross-sectional view of the structure cut along the direction of the second pin.
[0022] Figure 8 It is a schematic diagram of a three-dimensional cross-sectional structure cut along the direction of the first pin. DETAILED DESCRIPTION
[0023] The following is combined with Figures 1 to 8 Further description of this application:
[0024] A power converter with foldable pins, comprising a housing 1, a circuit board 2, and a pin assembly 3. The pin assembly 3 is installed in the housing 1 and extends from the back side of the housing 1. The front side of the housing 1 is provided with a plurality of sockets. The pin assembly 3 includes a bracket 31 and a first pin 32 (i.e., a ground pin), a second pin 33 (i.e., a neutral and a live pin), a linkage 34, a copper sleeve 35, and an elastic member 36 provided on the bracket 31. The first pin 32 and the second pin 33 are respectively pivotally connected to the bracket 31. The linkage 34 is respectively connected to the first pin 32 and the second pin 33 to enable the two to flip synchronously. A first pin 32 is provided at the base of the first pin The contact pin 321 is provided with a second contact pin 331 at the base of the second pin 33. The bracket 31 is provided with a copper sleeve 35 that is respectively adapted to the first contact pin 321 and the second contact pin 331. The first contact pin 321 and the second contact pin 331 fall into and contact the corresponding copper sleeve 35 when the pin is flipped from the inside of the shell 1 to the outside of the shell 1. The elastic member 36 is respectively connected to the first pin 32 and the second pin 33 to provide a torque to reset the pins to the plug position or the storage position. The plug position refers to the position where the pin is flipped out of the shell 1 to a position perpendicular to the back side of the shell 1, and the storage position refers to the position where the pin is flipped to the inside of the shell 1.
[0025] This product overcomes the problems of traditional products with exposed pins, such as large space occupation and easy contact with foreign objects, through the flip-folding design of the pins, making it easy to store and carry. The force exerted by the elastic member on the pins provides assistance during pin flipping. The user only needs to move the pin away from the receiving slot by a certain angle, and the pin will automatically bounce to the plug-in position under the force of the elastic member. After moving the pin away from the plug-in position by a certain angle, the pin will automatically flip back into the storage position under the force of the elastic member. The pins are then combined with a linkage structure to achieve synchronous flipping of all pins between the plug-in position and the storage position, providing a good user experience. At the same time, the coordinated structure of the copper sleeve and the contact column effectively ensures the electrical contact area of the pins, enabling the passage of large currents, providing the basis for the power converter to achieve high power and fast charging.
[0026] Specifically, the base of the first pin 32 has a first pivot axis 322 and a first connecting axis 323 extending laterally, and the base of the second pin 33 has a second pivot axis 332 and a second connecting axis 333 extending laterally. The back side of the shell 1 has a first accommodating groove 101 for accommodating the first pin 32 and a second accommodating groove 102 for accommodating the second pin 33. The first accommodating groove 101 and the second accommodating groove 102 respectively have a docking port 10 connected to the interior of the shell 1. The first pin 32 and the second pin 33 respectively pass through the docking port 10 from the interior of the shell 1. A first pivot axis bracket 103 and a second pivot axis bracket 104 cooperating with the bracket 31 are provided on the inner side of the shell 1 at the docking port 10. The first pivot axis bracket 103 is equipped with the first pivot axis 322, and the second pivot axis bracket 104 is equipped with the second pivot axis 332, so that the first pin 32 and the second pin 33 can be flipped and folded in the accommodating groove or flipped out of the accommodating groove. The housing 1 is provided with an AC jack 105 and several DC jacks 106. The circuit board 2 is used for AC switching and AC-DC conversion. It has an AC socket corresponding to the AC jack 105 and a DC socket corresponding to the DC jack 106. The specifications of the AC jack 21 are different from the corresponding socket specifications of the pins to achieve AC plug-in conversion. The DC jack is used to output the DC voltage converted by the circuit board 2. It can be a common interface type such as USB-A interface or USB-C interface. Depending on the layout of the DC socket on the circuit board 2, the DC jack 106 can also be located on the side of the housing 1.
[0027] To facilitate flipping the pin, one end of the first accommodating groove 101 has a notch 100 connected to the outside. The notch 100 is opposite to the end of the first pin 32 in the storage position. When the first pin 32 is in the storage position, its end extends out of the notch 100. The surface of the face shell 1 corresponding to the notch 100 is provided with an inner recess 108. When in the storage position, the end of the first pin 32 is located in the inner recess 108.
[0028] In this embodiment, the first pin 32 is arranged between the two second pins 33, and the flipping directions of the first pin 32 and the second pin 33 are opposite; the first pivot shaft 321 is transversely provided on both sides of the base of the first pin 32, and the first hanging column 324 is eccentrically provided at the end of the first pivot shaft 321, and the first connecting shaft 323 is provided on the inner side of the base of the first pin 32; the second pivot shaft 331 is transversely provided on both sides of the base of the second pin 33, and the second hanging column 334 is eccentrically provided at the end of the outer section of the second pivot shaft 331, and the second connecting shaft 333 is provided on the inner side of the base of the second pin 33; the elastic member 36 is a spring with hanging rings at both ends, which is respectively connected to the first hanging column 324 and the second hanging column 334. During the flipping process of the pin, the spring is stretched to provide a restoring torque. When the pin is flipped to a position close to the plugging position and the storage position, the torque of the spring pulls the pin toward the plugging position and the storage position. The linkage 34 comprises two parallel vertical plates 341 and a bridge plate 342 connecting the two vertical plates 341 at the bottom. A first axial hole 3411 is provided at one end of the vertical plate 341, which is movably connected to the first linkage shaft 323. A second axial hole 3412 is provided at the other end of the vertical plate 341, which is movably connected to the second linkage shaft 333. The bracket 31 is provided with a linkage groove 311 for accommodating the linkage 34. The linkage 34 moves along the linkage groove 311. A protrusion 312 is provided within the linkage groove 311 for contacting the bridge plate 342 to raise the linkage 34. The protrusion 312 is designed to change the movement path of the linkage 34 to meet the spacing limit between the first linkage shaft 323 and the second linkage shaft 333 during flipping, making flipping smoother and preventing jamming.
[0029] To meet high current requirements, the copper sleeve 35 adapted for the second pin 33 includes an electrical contact piece 351 for connecting to the circuit board 2 and two clips 352 for connecting to the pin. A clamping portion 35a is formed between the two clips 352. A guide portion 35b is provided between the clamping portion 35a and the end of the clip 35, and a stop portion 35c is provided between the clamping portion 35a and the base of the clip 35. The end of the clip 35 is flared to facilitate the pin's contact pin to enter between the clips 35 and then embed into the clamping portion 35a through the guide portion 35b. This structure of copper sleeve 35 and contact pin ensures effective electrical contact area, capable of passing high current and providing the basis for high-power and fast charging for the power converter. The stop portion 35c prevents the contact pin from moving further toward the base of the clip 35, limiting the contact pin at the clamping portion 35a to ensure stable contact. In this embodiment, the clamping portion 35 a is an annular contact area formed by two clips 35 bent outward, which can fit and wrap around the surface of the contact pin to achieve a maximum electrical contact area.
[0030] The above preferred embodiments should be regarded as examples of the implementation methods of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on it should be regarded as within the scope of protection of this patent.
Claims
1. A power converter with foldable pins, comprising a housing, a circuit board and a pin assembly, wherein the pin assembly is installed in the housing and extends from the back side of the housing, and a plurality of groups of jacks are provided on the front side of the housing, characterized in that: The pin assembly comprises a bracket and a first pin, a second pin and a linkage member arranged on the bracket, wherein the first pin and the second pin are respectively pivotally connected to the bracket, and the linkage member is respectively connected to the first pin and the second pin to make the two pins flip synchronously; A first contact column is provided at the base of the first pin, and a second contact column is provided at the base of the second pin. The bracket is provided with copper sleeves respectively adapted to the first contact column and the second contact column. When the pin is flipped from inside the shell to outside the shell, the first contact column and the second contact column respectively fall into the corresponding copper sleeves and contact with them.
2. The power converter with foldable pins according to claim 1, characterized in that: The base of the first pin has a first pivot axis and a first connecting axis extending laterally, the base of the second pin has a second pivot axis and a second connecting axis extending laterally, the back side of the shell has a receiving groove for storing the first pin and the second pin, each receiving groove has a docking port connected to the interior of the shell, the first pin and the second pin respectively pass through the docking port from the interior of the shell, and the first pivot axis and the second pivot axis are respectively pivotally matched with the shell at the docking port so that the pins can be flipped and folded in the receiving groove or flipped out of the receiving groove.
3. The power converter with foldable pins according to claim 2, characterized in that: The first pin is arranged between the two second pins, and the flipping directions of the first pin and the second pin are opposite; the first pivot shaft is transversely provided on both sides of the base of the first pin, a first hanging column is eccentrically provided at the end of the first pivot shaft, and the first connecting shaft is provided on the inner side of the base of the first pin; the second pivot shaft is transversely provided on both sides of the base of the second pin, a second hanging column is eccentrically provided at the end of the outer section of the second pivot shaft, and the second connecting shaft is provided on the inner side of the base of the second pin; the first hanging column and the second hanging column are connected by an elastic member so that the elastic member provides a torque to reset the pin to the plugging position or the storage position.
4. The power converter with foldable pins according to claim 3, characterized in that: The linkage member comprises two vertical plates parallel to each other, a first shaft hole movably connected to the first linkage shaft is arranged at one end of the vertical plate, and a second shaft hole movably connected to the second linkage shaft is arranged at the other end of the vertical plate.
5. The power converter with foldable pins according to claim 4, characterized in that: The linkage also includes a jumper plate connecting two vertical plates at the bottom. The bracket is provided with a linkage groove for accommodating the linkage. The linkage moves along the linkage groove. A protrusion is provided in the linkage groove for contacting the jumper plate to lift the linkage.
6. The power converter with foldable pins according to any one of claims 1 to 5, characterized in that: The copper sleeve includes an electrical contact piece for connecting to a circuit board, and two clips for connecting to a pin; a clamping portion is formed between the two clips, an introduction portion is provided between the clamping portion and the end of the clip, a limiting portion is provided between the clamping portion and the base of the clip, and the end of the clip is outwardly expanded.
7. The power converter with foldable pins according to any one of claims 1 to 5, characterized in that: The shell is provided with an AC jack and a plurality of DC jacks, and the circuit board is provided with AC sockets corresponding to the AC jacks and DC sockets corresponding to the DC jacks.