Power converter with foldable pins
By designing a connecting flip-folding pin assembly in the power converter, the coordination of elastic parts and connecting parts solves the problem of large space occupied by the exposed pins and troublesome operation, and realizes convenient storage and stable plug-in. Improves current throughput and supports high power and fast charging.
Patent Information
- Application Number
- CN202421094192.2
- 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 exposed pins of existing power converters take up a large space and are easy to touch each other, which is troublesome to operate and has a small contact area, which limits the passage of current.
A power converter with foldable pins is designed, using a connected flip-folding pin assembly. Through the cooperation of elastic parts and connecting parts, the pins are automatically flipped and synchronously stored, increasing the contact area of the pins.
It solves the problems of large space occupied by the exposed pins and troublesome operation, realizes convenient storage and stable plugging of pins, improves current throughput, and supports high power and fast charging.
Smart Images
Figure CN222483844U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a power converter with foldable plug pins. Background Art
[0002] The exposed pins of the power converter take up a large space and are easily scratched by foreign objects, especially pockets, cloth bags, etc., so it is necessary to consider folding or storing the pins. The existing folding design allows the pins to be flipped and stored in the groove on the surface of the shell, and then manually flipped up when in use. However, this design requires the pins to be flipped into place one by one by hand, which is more troublesome to operate; and no force is provided to maintain the pins in the plug-in position, making the pins easily rotated by external forces or their own gravity, which is not conducive to plugging and positioning. 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 utility model provides a power converter with foldable pins, which enables the pins to be flipped and folded in a linked manner, which is specifically achieved by the following technical means:
[0004] A power converter with foldable pins comprises a shell, a circuit board and a pin assembly, wherein the pin assembly comprises a pin bracket, a first pin, a second pin, a linkage and an elastic member, wherein the base of the first pin has a first pivot axis and a first linkage axis extending laterally, the base of the second pin has a second pivot axis and a second linkage axis extending laterally, the back side of the shell has a receiving groove for accommodating 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 interior of the shell through the docking port, and the first pivot axis and the second pivot axis are respectively pivotally matched with the shell at the docking port, the linkage is respectively movably connected to the first linkage axis and the second linkage axis so that the first pin and the second pin are synchronized when flipping, and the elastic member contacts the linkage to provide thrust thereto.
[0005] In one or more embodiments of the present invention, the linkage is located between the two second pins, and includes two vertical plates parallel to each other and a jumper plate connecting the two 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, and the elastic member is provided on the pin bracket and contacts the jumper plate.
[0006] In one or more embodiments of the utility model, the vertical plate is also provided with a first shaft support portion and a second shaft support portion for supporting the second pivot shaft, and a convex arc-shaped transition portion is provided between the first shaft support portion and the second shaft support portion, the first shaft support portion supports the second pivot shaft when the second pin is in a folded state, and the second shaft support portion supports the second pivot shaft when the second pin is in a plugged state.
[0007] In one or more embodiments of the present invention, the orientation and flipping direction of the first pin and the second pin are consistent.
[0008] In one or more embodiments of the utility model, a first contact column is provided at the tail end of the first pin, a second contact column is provided at the tail end of the second pin, and a copper sleeve respectively adapted to the first contact column and the second contact column is provided on the pin bracket, and the first contact column and the second contact column respectively fall into the corresponding copper sleeve and contact with it when the pin is flipped from inside the shell to outside the shell.
[0009] In one or more embodiments of the present invention, the copper sleeve is provided with a pair of clamping arms for clamping the contact pin, a clamping portion is provided on the clamping arm, and an outwardly expanded introduction portion is provided between the clamping portion and the end of the clamping arm.
[0010] In one or more embodiments of the present invention, the clamping portion is in the shape of a flat plate, and the first contact column and the second contact column are respectively provided with a contact plane adapted to the clamping portion.
[0011] In one or more embodiments of the present invention, a recessed portion is disposed on the back side of the housing, and the recessed portion is communicated with a receiving groove for storing the first plug pin.
[0012] Compared with the prior art, the excellence of the utility model is embodied in:
[0013] 1) The flip storage design of the plug overcomes the problem of large space occupation and easy collision with foreign objects caused by the exposed plugs in traditional products, making it easy to store and carry. The elastic part and the linkage part exert force on the plug to achieve assistance when the plug is flipped. The user only needs to push the plug away from the accommodating groove at a certain angle, and then the plug will automatically bounce to the plug position under the force of the elastic part. After pushing the plug away from the plug position at a certain angle, the plug will automatically flip into the storage position under the force of the elastic part. The linkage structure between the pins is used to achieve synchronous flipping of all the pins between the plug position and the storage position, which provides a good user experience.
[0014] 2) The linkage is an integral part consisting of two vertical plates and a jumper plate, so that the connection structure of the pin assembly assembled with the first pin and the second pin is stable (not easy to fall apart). During assembly, the pin assembly can be assembled first and then embedded in the bottom plate as a whole, which is convenient for workers to operate.
[0015] 3) The coordinated structure of the copper sleeve and the contact column ensures the electrical contact area effectively, enabling large currents to pass through, providing a basis for the power converter to achieve high power and fast charging.
[0016] 4) The elastic member is arranged in the middle of the pin assembly and provides thrust to the linkage member. The design of the first shaft support and the second shaft support on the linkage member not only realizes the limiting and pivoting cooperation of the second pivot shaft, but also the shaft support and the second pivot shaft are non-fixedly connected, so that the linkage member has more flexible displacement space, reduces the design difficulty, and avoids the situation where parts are stuck during flipping and transformation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Schematic diagram of the three-dimensional structure of the power converter (front side).
[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the power converter (back side).
[0019] Figure 3 This is a schematic diagram of the disassembled structure of the power converter.
[0020] Figure 4 It is a schematic diagram of the assembled structure of the pin assembly.
[0021] Figure 5 Schematic diagram of the exploded structure of the pin assembly.
[0022] Figure 6 It is a schematic diagram of a three-dimensional cross-sectional structure of the power converter cut along the direction of the first pin.
[0023] Figure 7 It is a schematic diagram of a three-dimensional cross-sectional structure of the power converter cut along the direction of the second pin.
[0024] Figure 8 It is a schematic diagram of the transverse cross-sectional structure of the power converter.
[0025] Fig. 9 Schematic diagram of the pin flipping process. DETAILED DESCRIPTION
[0026] Combine the following Figures 1 to 9 Further description of this application scheme:
[0027] A power converter with foldable pins, comprising a housing 1, a circuit board 2 and a pin assembly 3, wherein the pin assembly 3 comprises a pin bracket 31, a first pin 32 (i.e., a ground pin), a second pin 33 (i.e., a neutral and live pin), a linkage 34 and an elastic member 35, wherein the base of the first pin 32 has a first pivot shaft 321 and a first linkage shaft 322 extending laterally, and the base of the second pin 33 has a second pivot shaft 331 and a second linkage shaft 332 extending laterally. The back side of the housing 1 has a first receiving groove 101 for storing the first pin 32 and a second receiving groove 102 for storing the second pin 3. The first receiving groove 101 and the second receiving groove 102 respectively have a docking port 10 connected to the inside of the housing 1. The first pin 32 and the second pin 33 respectively pass through the docking port 10 from the inside of the housing 1, and the first pivot shaft 321 and the second pivot shaft 331 are respectively pivotally matched with the housing 1 at the docking port 10. A recessed portion 103 is provided on the back side, and the recessed portion 103 is communicated with the first accommodating groove 101 for storing the first pin 32, so as to facilitate contacting the end of the first pin 32 to apply force to flip it; an AC jack 104 and a plurality of DC jacks 105 are provided on the shell 1, and the circuit board 2 is used to realize AC switching and AC-DC conversion, and is provided with an AC socket corresponding to the AC jack 104 and a DC socket corresponding to the DC jack 105, and the specifications of the AC jack 21 are different from the specifications of the jacks corresponding to the pins to realize AC plug conversion; the DC jack 105 is used to output the DC voltage converted by the circuit board 2, which can be a common interface type such as a USB-A interface and a USB-C interface; according to the layout of the DC socket on the circuit board 2, the DC jack 106 can also be provided on the side of the shell 1; the linkage 34 is movably connected with the first linkage shaft 322 and the second linkage shaft 332 respectively to synchronize the first pin 32 and the second pin 33 when flipping.
[0028] This product overcomes the problem of large space occupation and easy collision with foreign objects caused by the exposed plugs in traditional products through the flipping storage design of the plugs, which is convenient for storage and carrying. The elastic member 35 and the linkage member 34 exert force on the plugs to achieve assistance when the plugs are flipped. The user only needs to push the plugs away from the receiving groove at a certain angle, and the plugs will automatically bounce to the plugging position under the torque of the elastic member 35. After the plugs are pushed away from the plugging position at a certain angle, the plugs will automatically flip into the receiving groove under the force of the elastic member 35. Then, the linkage structure between the first plug 32 and the second plug 33 is used to realize the synchronous flipping of all the pins between the plugging position and the storage position, which provides a good user experience.
[0029] Specifically, the linkage 34 is located between the two second pins 33, and includes two vertical plates 341 parallel to each other and a jumper plate 342 connecting the two vertical plates 341. One end of the vertical plate 341 is provided with a first shaft hole 3411 movably connected to the first linkage shaft 322, and the other end of the vertical plate 341 is provided with a second shaft hole 3412 movably connected to the second linkage shaft 332. The second linkage shafts 332 of the two second pins 33 extend toward the linkage 34 and are respectively inserted into the second shaft holes 3412. The elastic member 35 is provided on the pin bracket 31 and touches the jumper plate 342. In this embodiment, the elastic member 35 is a spring. The pin bracket 31 is provided with a vertical hole 310 for the spring to be embedded. One end of the spring is embedded in the vertical hole 310, and the other end extends out of the vertical hole 310 until it touches the jumper plate of the linkage 34. A first shaft support portion 3413 and a second shaft support portion 3414 for supporting the second pivot shaft 331 are also provided on the vertical plate 341, and a convex arc-shaped transition portion 3415 is provided between the first shaft support portion 3413 and the second shaft support portion 3414. The first shaft support portion 3413 supports the second pivot shaft 331 when the second pin 33 is in a folded state, and the second shaft support portion 3414 supports the second pivot shaft 331 when the second pin 33 is in a plug-in state; wherein the folded state refers to the pin being flipped over to be folded in the receiving groove of the shell 1, and the plug-in state refers to the pin being flipped out of the receiving groove of the shell 1 to be perpendicular to the back side of the shell 1.
[0030] The linking member 34 of this product is an integral part composed of two vertical plates 341 and a bridging plate 342, so that the connection structure of the pin assembly 3 assembled by the linking member 34, the first pin 32 and the second pin 33 is stable. During assembly, the pin assembly 3 can be assembled first, and then the whole can be embedded in the housing, which is convenient for workers to operate. In addition, this product innovatively sets an elastic member 35 at the center of the pin assembly 3. The elastic member 35 provides a thrust to the linking member 34 through its own compression, which can not only meet the torque required for flipping, but also is easy to assemble and not easy to fall apart.
[0031] In the folded state, see attached Fig. 9 In the view (a), the second pivot shaft 331 is supported by the first shaft support 3413, and the linking member 34 is lifted up under the action of the elastic member 35, and the linking member 341 applies a torque to the first linking shaft 322 and the second linking shaft 332 respectively, and under the action of the lever, the first pin 32 and the second pin 33 are provided with a restoring force to limit them in the receiving groove. Even if a force is applied to the first pin 32 and the second pin 33 to make them flip slightly, they will automatically flip back to the receiving groove under the action of the above-mentioned restoring force after letting go.
[0032] The first pin 32 and the second pin 33 have the same orientation and flipping direction. Take the example of applying force to the first pin 32 to make it flip actively: see the attached Fig. 9 In the view (b), as the first pin 32 is turned up, its first linking shaft 322 moves counterclockwise around the axis of the first pivot shaft 321, thereby driving the linking member 34 to shift, and then driving the second linking shaft 332 to move counterclockwise around the axis of the second pivot shaft 331, thereby realizing the driven flipping of the second pin 33. In this process, the linking member 34 will press down on the elastic member 35 to overcome its torque. At the same time, with the displacement of the linking member 34, the second pivot shaft 331 will move from the first shaft support portion 3413 along the transition portion 3415 until it contacts the second shaft support portion 3414, so that the first pin 32 and the second pin 33 are in a plug-in state. During the flipping process, when the second pivot axis 331 crosses the interference point A on the convex arc of the transition portion 3415, the displacement of the linking member 34 gradually moves upward from pressing down on the elastic member 35, so that the linking member 34 is lifted up again under the torque of the elastic member 34, see the attached Fig. 9 In view (c) in the figure, the connecting member 341 applies a torque to the first connecting shaft 322 and the second connecting shaft 332 respectively. Under the action of the lever, the first pin 32 and the second pin 33 are provided with a restoring force to limit them to the plug-in position and prevent them from tipping over or tilting.
[0033] When force is applied to the pin to flip it back to the receiving slot, similar to the above working principle, the linkage member 34 is pressed down by the elastic member 35 and gradually moves upward in the opposite direction. At the same time, the second pivot shaft 331 moves from the second shaft support portion 3414 along the transition portion 3415 until it contacts the first shaft support portion 3413 to achieve reset.
[0034] The elastic member 35 is arranged in the middle of the pin assembly 3 and provides a thrust to the linkage member. The design of the first shaft support portion 3413 and the second shaft support portion 3415 on the linkage member 34 not only realizes the limiting and pivoting cooperation of the second pivot shaft 331, but also the shaft support portion and the second pivot shaft 331 are non-fixedly connected, so that the linkage member 34 has a more flexible displacement space, effectively reduces the design difficulty, and makes the flipping smoother, avoiding the situation where parts are stuck during flipping and transformation.
[0035] In order to meet the requirements of electrical contact of the pin and passing a large current, a first contact column 323 is provided at the tail end of the first pin 32, and a second contact column 333 is provided at the tail end of the second pin 33. The pin bracket 31 is provided with a copper sleeve 36 respectively adapted to the first contact column 323 and the second contact column 333. When the pin is flipped from the inside of the housing to the outside of the housing 1, the first contact column 323 and the second contact column 333 fall into and contact the corresponding copper sleeve 36. The copper sleeve 36 is provided with a pair of clamping arms 361 for clamping the contact column, and a clamping portion 361a is provided on the clamping arm 361. An outwardly expanded introduction portion 361b is provided between the clamping portion 361a and the end of the clamping arm 361. The clamping portion 361a is in the shape of a flat plate, and the first contact column 323 and the second contact column 333 are respectively provided with a contact plane adapted to the clamping portion 361a. The matching structure of the copper sleeve 36 and the contact column of this product effectively guarantees the electrical contact area, which can pass large current and provide a basis for the power converter to achieve high power and fast charging.
[0036] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes 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 this scheme 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, characterized in that: The pin assembly includes a pin bracket, a first pin, a second pin, a linkage and an elastic member, the base of the first pin has a first pivot axis and a first linkage axis extending laterally, the base of the second pin has a second pivot axis and a second linkage 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 interior of the shell through the docking port, and the first pivot axis and the second pivot axis are respectively pivotally matched with the shell at the docking port, the linkage is movably connected to the first linkage axis and the second linkage axis respectively to synchronize the first pin and the second pin when flipping, and the elastic member contacts the linkage to provide thrust thereto.
2. The power converter with foldable pins according to claim 1, characterized in that: The linkage is located between the two second pins, and includes two vertical plates parallel to each other and a jumper plate connecting the two 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. The elastic member is arranged on the pin bracket and contacts the jumper plate.
3. The power converter with foldable pins according to claim 2, characterized in that: The vertical plate is also provided with a first shaft support portion and a second shaft support portion for supporting the second pivot shaft, and a convex arc-shaped transition portion is provided between the first shaft support portion and the second shaft support portion. The first shaft support portion supports the second pivot shaft when the second pin is in a folded state, and the second shaft support portion supports the second pivot shaft when the second pin is in an inserted state.
4. The power converter with foldable pins according to claim 3, characterized in that: The orientation and flipping direction of the first plug pin and the second plug pin are consistent.
5. The power converter with foldable pins according to claim 1, 2 or 3, characterized in that: A first contact column is provided at the tail end of the first pin, and a second contact column is provided at the tail end of the second pin. The pin 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.
6. The power converter with foldable pins according to claim 5, characterized in that: The copper sleeve is provided with a pair of clamping arms for clamping the contact column, a clamping portion is provided on the clamping arm, and an outwardly expanded introduction portion is provided between the clamping portion and the end of the clamping arm.
7. The power converter with foldable pins according to claim 6, characterized in that: The clamping portion is in the shape of a flat plate, and the first contact column and the second contact column are respectively provided with contact planes adapted to the clamping portion.
8. The power converter with foldable pins according to claim 1, characterized in that: A recessed portion is provided on the back side of the housing, and the recessed portion is communicated with a receiving groove for storing the first plug pin.