Power adapter
By designing limit grooves and snap rings, limit parts and snap parts on the upper and lower covers of the power adapter, the problem of complicated assembly of existing power adapters is solved, fast, accurate and stable assembly is achieved, and assembly efficiency and stability are improved.
Patent Information
- Application Number
- CN202422701504.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing power adapters are complicated to assemble, and the upper cover, lower cover, plug, and socket are difficult to accurately align and securely assemble, resulting in poor assembly efficiency and a high rework rate, which cannot meet production and processing requirements.
The upper and lower covers are designed with limit grooves and snap rings, limit parts and snap parts respectively. The limit grooves and snap parts are engaged to achieve precise alignment and stable combination of the upper and lower covers. The specific structure of the plug and socket ensures the fixation of the plug. Combined with the printed circuit board assembly, the conversion and output of AC to DC power are realized.
It achieves fast, accurate and stable assembly of power adapters, improves assembly efficiency, reduces rework rate, and enhances assembly stability and aesthetics.
Smart Images
Figure CN223334090U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power adapters. Background Art
[0002] Power adapters are devices that convert power to electricity for portable electronic devices. Existing power adapters are complex to assemble, and the top and bottom covers, plugs, and sockets are difficult to precisely align and securely assemble. This results in poor assembly efficiency and high rework rates, making them unable to meet current production and processing requirements. Utility Model Content
[0003] To overcome the shortcomings of the prior art, the present invention provides a power adapter comprising: an upper cover, a lower cover, a plug, a printed circuit board assembly, and a socket. The upper cover has a cover edge provided with a retaining groove and a snap ring. The snap ring is located on a side wall of the retaining groove near the center of the upper cover. The lower cover has a cover edge provided with a retaining member and a snap member. The snap member is located on a surface of the retaining member near the center of the upper cover. The retaining member is embedded in the retaining groove, and the snap member snaps into the snap ring, thereby assembling the upper and lower covers. The plug is located between the cover edges of the upper and lower covers and is used to connect to an external alternating current (AC). The PCB assembly is located between the upper and lower covers and is coupled to the plug to convert the AC power into a final DC power. The socket is located between the cover edges of the upper and lower covers and is coupled to the PCB assembly to output the final DC power.
[0004] In one embodiment, the upper cover edge is further provided with an upper notch, with two first insertion bars disposed on opposing sidewalls of the upper notch. The lower cover edge is further provided with a lower notch, with two second insertion bars disposed on opposing sidewalls of the lower notch. Two first slots are disposed on the left and right sides of the plug. The two first insertion bars of the upper cover and the two second insertion bars of the lower cover are inserted into the two first slots of the plug, thereby securing the plug within the lower notch of the lower cover and the upper notch of the upper cover.
[0005] In one embodiment, an embedding groove is provided at one end of the first inserting strip facing the lower cover, and an embedding block is provided at one end of the second inserting strip facing the upper cover, and the embedding block is embedded in the embedding groove.
[0006] In one embodiment, two second slots are provided on the upper and lower sides of the plug. A third insert is provided at the bottom of the upper recess for inserting into the second slot located on the upper side of the plug. A fourth insert is provided at the bottom of the lower recess for inserting into the second slot located on the lower side of the plug.
[0007] In one embodiment, an adhesive layer is provided at the bottom of the limiting groove for bonding the limiting groove and the limiting member.
[0008] In one embodiment, the upper cover and the lower cover are scallop-shaped, each comprising an arc-shaped portion and a flat portion, the plug is provided on the flat portion, and the socket is provided on the arc-shaped portion.
[0009] In one embodiment, the cross-section of the fastener is triangular.
[0010] In one embodiment, the power adapter further includes a light emitting element, the light emitting element being embedded in the upper cover and coupled to the socket, and the socket providing the final DC power to the light emitting element, thereby causing the light emitting element to emit light.
[0011] In one embodiment, the printed circuit board assembly includes a circuit board, and a bridge rectifier, a transformer, and a synchronous rectifier disposed on the circuit board. The bridge rectifier is coupled to the plug to convert the alternating current (AC) into initial DC power. The transformer is coupled to the bridge rectifier to adjust the voltage of the initial DC power. The synchronous rectifier is coupled to the transformer and the socket to stabilize the adjusted voltage and current of the initial DC power to form the final DC power, which is then supplied to the socket.
[0012] In one embodiment, the printed circuit board assembly further includes: a circuit transmission control chip, a pulse modulation chip, and a main transistor disposed on the circuit board. The circuit transmission control chip is coupled to the socket. The pulse modulation chip is coupled to the circuit transmission control chip. The main transistor is coupled to the pulse modulation chip and the transformer. When an electronic device is plugged into the socket, the circuit transmission control chip provides the pulse modulation chip with an output power mode corresponding to the electronic device. The pulse modulation chip controls the switching of the main transistor based on the output power mode, thereby causing the transformer to output a voltage consistent with the output power mode. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the present invention, the following briefly introduces the drawings used in the specific embodiments of the present invention. The following drawings are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0014] Figure 1 It is a schematic diagram of the power adapter of the present utility model.
[0015] Figure 2 This is a schematic diagram of the power adapter of the present invention viewed from another angle.
[0016] Figure 3This is an exploded view of the power adapter of the present utility model.
[0017] Figure 4 It is a schematic diagram of the upper cover of the utility model.
[0018] Figure 5 It is a schematic diagram of the lower cover of the utility model.
[0019] Figure 6 It is a partial schematic diagram of the upper cover and the lower cover of the utility model when they are buckled together.
[0020] Figure 7 This is a schematic diagram of the printed circuit board assembly of the present invention viewed from another angle.
[0021] Figure 8 This is a block diagram of the components of the power adapter of the present utility model. DETAILED DESCRIPTION
[0022] See also Figures 1 to 3 The utility model provides a power adapter, which includes an upper cover 1, a lower cover 2, a plug 3, a printed circuit board assembly 4 and a socket 60. Figure 4 The cover edge of the upper cover 1 is provided with a limiting groove 10 and a snap ring 11. The snap ring 11 is located on the side wall of the limiting groove 10 close to the center of the upper cover 1. Figure 5 The edge of the lower cover 2 is provided with a limiter 20 and a latch 21. The latch 21 is located on the surface of the limiter 20 close to the center of the upper cover 1. Figure 4 and Figure 5 The limiting member 20 is embedded in the limiting groove 10, and the buckle member 21 is buckled into the buckle ring 11, so that the upper cover 1 and the lower cover 2 are combined. Figure 2 The plug 3 is located between the cover edge of the upper cover 1 and the cover edge of the lower cover 2 for external AC power. Figure 3 The printed circuit board assembly 4 is disposed between the upper cover 1 and the lower cover 2 and is coupled to the plug 3 to convert the AC power into a final DC power. Figure 1 and Figure 3 The socket 60 is disposed between the cover edge of the upper cover 1 and the cover edge of the lower cover 2 and is coupled to the printed circuit board assembly 4 to output the final direct current.
[0023] See also Figures 3 to 5The assembly process of the power adapter of the present invention is to first place the printed circuit board assembly 4 in the lower cover 2, then embed a portion of the plug 3 in the cover edge of the lower cover 2, and then assemble the upper cover 1 onto the lower cover 2 and the plug 3. In the final step, only a downward force is applied to the upper cover 1, so that the limit groove 10 of the upper cover 1 can be engaged with the limit member 20 of the lower cover 2, the other portion of the plug 3 is embedded in the cover edge of the upper cover 1, and the snap ring 11 of the upper cover 1 is engaged with the snap member 21 of the lower cover 2. Accordingly, the power adapter of the present invention is simple to assemble, can be assembled conveniently and quickly, and the upper cover 1, lower cover 2, and plug 3 can be accurately aligned and firmly assembled, with high assembly efficiency and low rework rate. In one embodiment, the bottom of the limit groove 10 can be provided with an adhesive layer for bonding the limit groove 10 and the limit member 20. The provision of the adhesive layer further improves the assembly stability of the upper cover 1 and the lower cover 2.
[0024] See also Figure 4 and Figure 5 In this embodiment, the number of the snap rings 11 of the upper cover 1 is six and they are spaced apart along the sidewalls of the limiting groove 10, and the lower cover 2 has six corresponding snap members 21, but the present invention is not limited thereto. The number and distribution of the snap rings 11 and the snap members 21 can be adjusted according to actual needs, as long as the upper cover 1 and the lower cover 2 can be firmly combined. Figures 4 to 6 In this embodiment, the snap ring 11 is a rectangular block with a through hole, and the snap member 21 is a triangular block with a triangular cross-section, but is not limited thereto. The shapes of the snap ring 11 and the snap member 21 can be adjusted according to actual needs, as long as the through hole can be engaged with the snap member 21.
[0025] In one embodiment, see Figure 4 The cover edge of the upper cover 1 is also provided with an upper notch 12. Two first inserts 13 are provided on the two opposite side walls of the upper notch 12. Figure 5 The cover edge of the lower cover 2 is also provided with a lower notch 22, and two second inserts 23 are provided on two opposite side walls of the lower notch 22. Figure 3 , two first slots 31 are provided on the left and right sides of the plug 3. Figures 3 to 5 The two first insertion strips 13 of the upper cover 1 and the two second insertion strips 23 of the lower cover 2 are inserted into the two first slots 31 of the plug 3, thereby securing the plug 3 within the lower notch 22 of the lower cover 2 and the upper notch 12 of the upper cover 1. This design allows the plug 3 to be conveniently, accurately, and securely positioned between the cover edges of the upper cover 1 and the lower cover 2.
[0026] In one embodiment, see Figure 4The first inserting strip 13 has an inserting groove 14 at one end facing the lower cover 2. Figure 5 The second inserting strip 23 is provided with an inserting block 24 at one end facing the upper cover 1. Figure 6 , the embedding block 24 is embedded in the embedding groove 14. This design can improve the assembly accuracy and assembly stability of the upper cover 1 and the lower cover 2.
[0027] In one embodiment, see Figure 3 , two second slots 32 are provided on the upper and lower sides of the plug 3. Figure 4 The bottom of the upper notch 12 is provided with a third inserting strip 15 for inserting into the second slot 32 located on the upper side of the plug 3. Figure 5 The bottom of the lower recess 22 is provided with a fourth inserting strip 25 for inserting into the second slot 32 located on the lower side of the plug 3. This design can further improve the assembly accuracy and assembly stability of the plug 3, the upper cover 1 and the lower cover 2.
[0028] See also Figure 1 In this embodiment, the upper cover 1 and the lower cover 2 are scallop-shaped and each includes an arcuate portion and a flat portion. The plug 3 is located in the flat portion, and the socket 60 is located in the arcuate portion, thereby enhancing the aesthetics of the power adapter. In other embodiments, the shapes of the upper cover 1 and the lower cover 2, and / or the positions of the plug 3 and the socket 60, can be adjusted according to actual needs.
[0029] See also Figure 1 In this embodiment, there are three sockets 60, including a first socket 61 and two second sockets 62 symmetrically located on either side of the first socket 61. The first socket 61 is a USB-A socket, and the second socket 62 is a USB-B socket, to meet user needs and aesthetic design. In other embodiments, the number, type, and arrangement of the sockets 60 can be adjusted based on actual needs.
[0030] See also Figure 1 and Figure 3In one embodiment, the power adapter of the present invention further includes a light-emitting element 7. The light-emitting element 7 is embedded in the upper cover 1 and coupled to the socket 60. The socket 60 provides the final DC power to the light-emitting element 7, so that the light-emitting element 7 emits light. In this embodiment, the light-emitting element 7 is coupled to the first socket 61, and the light-emitting element 7 is powered by the first socket 61. The power adapter of the present invention may further include a switch module, a light control module or a sound control module to control the opening and closing of the light-emitting element 7. In this embodiment, the light-emitting element 7 is embedded in the arc-shaped portion of the upper cover 1 and is an arc-shaped strip light. In other embodiments, the light-emitting element 7 may also be embedded in any part of the upper cover 1 or the lower cover 2 according to actual needs, or may be in other shapes.
[0031] See also Figure 3 、 Figure 7 and Figure 8 The printed circuit board assembly 4 includes a circuit board 41, and a bridge rectifier 42, a transformer 43, and a synchronous rectifier 44 arranged on the circuit board 41. The bridge rectifier 42 is coupled to the plug 3 to convert the AC power into initial DC power and transmit the initial DC power to the transformer 43. The transformer 43 is coupled to the bridge rectifier 42 to adjust the voltage of the initial DC power so that the voltage of the initial DC power is converted to a low voltage, and the output voltage thereof can be 5 to 20V. The synchronous rectifier 44 is coupled to the transformer 43 and the socket 60 to stabilize the voltage and current of the adjusted initial DC power to form the final DC power, and supply the final DC power to the socket 60.
[0032] See also Figure 7 and Figure 8In one embodiment, the printed circuit board assembly 4 further includes a circuit transmission control chip 45, a pulse modulation chip 46, and a main transistor 47 disposed on the circuit board 41. The circuit transmission control chip 45 is coupled to the socket 60. The pulse modulation chip 46 is coupled to the circuit transmission control chip 45. The main transistor 47 is coupled to the pulse modulation chip 46 and the transformer 43. When an electronic device is inserted into the socket 60, the circuit transmission control chip 45 provides an output power mode corresponding to the electronic device to the pulse modulation chip 46. The pulse modulation chip 46 controls the switching of the main transistor 47 based on the output power mode, thereby causing the transformer 43 to output a voltage consistent with the output power mode, thereby improving power conversion and distribution efficiency. Specifically, when the electronic device is inserted into the second socket 62, it transmits a signal to the circuit transmission control chip 45 through the second socket 62. Based on this signal, the circuit transmission control chip 45 provides the pulse modulation chip 46 with an output power mode corresponding to the electronic device. The pulse modulation chip 46 controls the switching of the main transistor 47 by adjusting the pulse width or pulse frequency according to the output power mode, so that the output voltage of the transformer 43 conforms to the voltage of the output power mode. The voltage of the output power mode can be 5 to 20V. Figure 8 In one embodiment, the bridge rectifier 42 is also used to supply the pulse modulation chip 46 with an operating current, and the synchronous rectifier 44 is also used to supply the circuit transmission control chip 45 with an operating voltage.
[0033] See also Figure 3 and Figure 8 In one embodiment, the printed circuit board assembly 4 further includes an electromagnetic interference filter 48 disposed on the circuit board 41. The electromagnetic interference filter 48 is coupled to the plug 3 and the bridge rectifier 42 to reduce conducted noise generated during the transmission of the AC power from the plug 3 to the bridge rectifier 42. The electromagnetic interference filter 48 may include an inductor 481 and a capacitor 482.
[0034] See also Figure 7 and Figure 8 In one embodiment, the printed circuit board assembly 4 further includes a step-down converter 49 disposed on the circuit board 41. The step-down converter 49 is coupled to the synchronous rectifier 44 and the first socket 61. The step-down converter 49 steps down the voltage of the final DC power output by the synchronous rectifier 44 to 5V to meet the voltage required by the first socket 61, and then transmits the voltage to the first socket 61. In one embodiment, the first socket 61 supplies power to the light-emitting element 7.
[0035] See also Figure 3 and Figure 7 In the previous embodiments, the transformer 43 and the electromagnetic interference filter 48 are arranged on the first surface 411 of the circuit board 41 close to the upper cover 1, and the bridge rectifier 42, the synchronous rectifier 44, the circuit transmission control chip 45, the pulse modulation chip 46, the main transistor 47 and the buck converter 49 are arranged on the second surface 412 of the circuit board 41 close to the lower cover 2. Such an arrangement can simplify the wiring between the aforementioned components and effectively utilize the space between the upper cover 1 and the lower cover 2; however, the present invention is not limited to this, and the positions of the aforementioned components on the circuit board 41 can also be adjusted according to the actual space between the upper cover 1 and the lower cover 2 and wiring requirements.
[0036] The above are only some embodiments of the present invention, not all embodiments, and therefore cannot be used to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the scope of protection of the present invention. The above embodiments are only used to illustrate the technical solutions of the present application, not to limit it; although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application.
Claims
1. A power adapter, characterized in that: include: An upper cover (1), wherein a cover edge of the upper cover (1) is provided with a limiting groove (10) and a snap ring (11), and the snap ring (11) is located on a side wall of the limiting groove (10) close to the center of the upper cover (1); A lower cover (2), wherein a cover edge of the lower cover (2) is provided with a limiting member (20) and a snap member (21), wherein the snap member (21) is located on a surface of the limiting member (20) close to the center of the upper cover (1); the limiting member (20) is embedded in the limiting groove (10), and the snap member (21) is snapped into the snap ring (11), thereby combining the upper cover (1) and the lower cover (2); A plug (3) is provided between the cover edge of the upper cover (1) and the cover edge of the lower cover (2) and is used for externally connecting to an alternating current; a printed circuit board assembly (4), disposed between the upper cover (1) and the lower cover (2), and coupled to the plug (3), for converting the alternating current into a final direct current; and The socket (60) is arranged between the cover edge of the upper cover (1) and the cover edge of the lower cover (2), and is coupled to the printed circuit board assembly (4) for outputting the final direct current.
2. The power adapter according to claim 1, wherein The cover edge of the upper cover (1) is further provided with an upper notch (12), and two first insertion strips (13) are provided on two opposite side walls of the upper notch (12); the cover edge of the lower cover (2) is further provided with a lower notch (22), and two second insertion strips (23) are provided on two opposite side walls of the lower notch (22); two first slots (31) are provided on the left and right sides of the plug (3); the two first insertion strips (13) of the upper cover (1) and the two second insertion strips (23) of the lower cover (2) are inserted into the two first slots (31) of the plug (3), so that the plug (3) is fixed in the lower notch (22) of the lower cover (2) and the upper notch (12) of the upper cover (1).
3. The power adapter according to claim 2, wherein: An embedding groove (14) is provided at one end of the first inserting strip (13) facing the lower cover (2), and an embedding block (24) is provided at one end of the second inserting strip (23) facing the upper cover (1), wherein the embedding block (24) is embedded in the embedding groove (14).
4. The power adapter according to claim 2, wherein: Two second slots (32) are provided on the upper and lower sides of the plug (3); a third insertion strip (15) is provided at the bottom of the upper notch (12) for inserting into the second slots (32) located on the upper side of the plug (3); and a fourth insertion strip (25) is provided at the bottom of the lower notch (22) for inserting into the second slot (32) located on the lower side of the plug (3).
5. The power adapter according to claim 1, wherein: An adhesive layer is provided at the bottom of the limiting groove (10) for bonding the limiting groove (10) and the limiting member (20).
6. The power adapter according to claim 1, wherein: The upper cover (1) and the lower cover (2) are scallop-shaped, and both include an arc-shaped portion and a flat portion; the plug (3) is arranged on the flat portion, and the socket (60) is arranged on the arc-shaped portion.
7. The power adapter according to claim 1, wherein: The cross section of the fastener (21) is triangular.
8. The power adapter according to claim 1, wherein: Also includes: A light-emitting element (7) is embedded in the upper cover (1) and coupled to the socket (60); the socket (60) provides the final direct current to the light-emitting element (7), thereby causing the light-emitting element (7) to emit light.
9. The power adapter according to claim 1, wherein: The printed circuit board assembly (4) includes: a circuit board (41), and a bridge rectifier (42), a transformer (43), and a synchronous rectifier (44) arranged on the circuit board (41); the bridge rectifier (42) is coupled to the plug (3) to convert the alternating current into initial direct current; the transformer (43) is coupled to the bridge rectifier (42) to adjust the voltage of the initial direct current; the synchronous rectifier (44) is coupled to the transformer (43) and the socket (60) to stabilize the adjusted voltage and current of the initial direct current to form the final direct current, and supply the final direct current to the socket (60).
10. The power adapter according to claim 9, wherein: The printed circuit board assembly (4) further comprises: a circuit transmission control chip (45), a pulse modulation chip (46), and a main transistor (47) arranged on the circuit board (41); the circuit transmission control chip (45) is coupled to the socket (60); the pulse modulation chip (46) is coupled to the circuit transmission control chip (45); the main transistor (47) is coupled to the pulse modulation chip (46) and the transformer (43); when an electronic device is inserted into the socket (60), the circuit transmission control chip (45) provides an output power mode corresponding to the electronic device to the pulse modulation chip (46); the pulse modulation chip (46) controls the switching of the main transistor (47) according to the output power mode, thereby causing the transformer (43) to output a voltage that conforms to the output power mode.