Adapter and electrical equipment
By setting insulating bumps on the insulating sheet, the problem of pins piercing the insulating sheet during EMI testing of the power adapter is solved, improving production efficiency and installability, and enhancing the stability of the insulation structure.
Patent Information
- Application Number
- CN202520075908.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-10
AI Technical Summary
In EMI tests, the circuit board pins of existing power adapters are prone to piercing the insulating sheet, increasing production steps and reducing production efficiency.
Insulating bumps are set on the insulating sheet, and their height supports the circuit board and the insulating sheet, preventing the pins from contacting the insulating sheet, reducing the possibility of the insulating sheet being punctured, and simplifying the production process.
It improves the installability and production efficiency of the adapter, reduces the number of production steps for the circuit board, and enhances the stability of the insulation structure.
Smart Images
Figure CN223713837U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of adapter, especially an adapter and an electric appliance. BACKGROUND
[0002] The power adapter is a power supply conversion device for small portable electronic devices and electronic appliances, which is generally composed of a shell, a power transformer and a rectifier circuit, and can be divided into AC output type and DC output type according to its output type; it can be divided into wall type and desktop type according to the connection mode.
[0003] However, as the space of the power adapter becomes smaller, the power adapter needs to use aluminum foil + first insulating sheet to pass the EMI experiment. In the steel ball experiment, the welded pins on the circuit board are easy to pierce the first insulating sheet. Therefore, in the prior art, a rubber pad is arranged on the circuit board to buffer the force of the steel ball experiment and prevent the welded pins from easily piercing the first insulating sheet. However, the additional arrangement of the rubber pad on the circuit board increases the production steps and reduces the production efficiency. SUMMARY
[0004] The main purpose of the utility model is to provide an adapter and an electric appliance, which aims to reduce the production steps of the circuit board and improve the production efficiency.
[0005] To achieve the above purpose, the utility model provides an adapter, which comprises:
[0006] A shell;
[0007] A circuit board assembly arranged in the shell, comprising a circuit board and at least one electrical element, the circuit board comprising a first side and a second side arranged oppositely, at least one through hole being arranged on the circuit board, the electrical element being installed on the second side of the circuit board corresponding to the through hole and having a pin extending out of the first side of the circuit board;
[0008] An insulating structure arranged in the shell, the insulating structure comprising at least one first insulating sheet and an insulating block arranged on the first insulating sheet, the first insulating sheet being located on the first side of the circuit board, the insulating block being supported between the first insulating sheet and the circuit board to separate the pin of the electrical element from the first insulating sheet.
[0009] In an embodiment, the insulating block and the first insulating sheet are integrally arranged.
[0010] In an embodiment, the material of the insulating structure comprises a hard material.
[0011] In an embodiment, a plurality of insulating blocks are arranged on the first insulating sheet.
[0012] In an embodiment, the insulating block has a first end and a second end arranged oppositely, the first end of the insulating block abuts the first side of the circuit board, and the second end of the insulating block is connected to the first insulating sheet; wherein the area of the first end is smaller than the area of the second end.
[0013] In an embodiment, the insulating block is in the shape of a truncated cone.
[0014] In an embodiment, the insulating structure further comprises a second insulating sheet arranged on the second side of the circuit board, and the side end of the first insulating sheet is connected to the side end of the second insulating sheet.
[0015] In an embodiment, the outer side of the insulating structure is provided with an electromagnetic shielding layer.
[0016] In an embodiment, the electromagnetic shielding layer comprises an aluminum foil, and the aluminum foil is wrapped on the outer side of the insulating structure.
[0017] The utility model also provides an electric appliance, including the adapter, the adapter includes:
[0018] A shell;
[0019] A circuit board assembly arranged in the shell, comprising a circuit board and at least one electrical element, the circuit board comprises a first side and a second side arranged oppositely, at least one through hole is arranged on the circuit board, the electrical element is installed on the second side of the circuit board corresponding to the through hole, and has a pin extending from the first side of the circuit board;
[0020] An insulating structure arranged in the shell, the insulating structure comprises at least one first insulating sheet and an insulating block arranged on the first insulating sheet, the first insulating sheet is located on the first side of the circuit board, and the insulating block is supported between the first insulating sheet and the circuit board to separate the pin of the electrical element from the first insulating sheet.
[0021] The technical scheme of the utility model sets the insulating block on the first insulating sheet, uses the height of the insulating block to support the first side of the circuit board and the first insulating sheet, separates the pin of the electrical element installed on the circuit board from the first insulating sheet, and reduces the possibility of the first insulating sheet being punctured in the process of falling of the heavy ball in the testing process, thereby improving the installation of the adapter. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described in the following only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without creative labor.
[0023] Figure 1 The structural schematic diagram of an embodiment of the adapter provided by the present application is shown in the figure.
[0024] Figure 2 The structural schematic diagram of the insulating structure in the adapter is shown in the figure. Figure 1
[0025] Explanation of reference numerals:
[0026] 100, adapter;
[0027] 1, housing; 11, first housing; 12, second housing;
[0028] 2, circuit board assembly; 21, circuit board; 22, electrical element;
[0029] 3, insulating structure; 31, first insulating sheet; 32, insulating bump; 321, first end; 322, second end; 33, second insulating sheet;
[0030] 4, electromagnetic shielding layer.
[0031] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.
[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.
[0034] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears in the whole text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.
[0035] The power adapter is a power supply conversion device for small portable electronic equipment and electronic appliances, which is generally composed of a shell, a power transformer and a rectifier circuit, and can be divided into AC output type and DC output type according to its output type; it can be divided into wall plug-in type and desktop type according to the connection mode. However, with the space of the power adapter becoming smaller and smaller, the power adapter needs to use aluminum foil + first insulating sheet to pass the EMI experiment, and the soldered pins on the circuit board are easy to pierce the first insulating sheet during the steel ball experiment. Therefore, in the prior art, a rubber pad is arranged on the circuit board to buffer the force of the steel ball experiment, so that the soldered pins are not easily pierced through the first insulating sheet. However, the additional arrangement of the rubber pad on the circuit board increases the production steps and reduces the production efficiency.
[0036] In order to solve the above technical scheme, as shown in Figure 1 The utility model discloses a kind of adapters 100, including shell 1, circuit component 2 and insulating structure 3. The circuit component 2 is arranged in the shell 1, including circuit board 21 and at least one electrical element 22, the circuit board 21 includes oppositely arranged first side and second side, at least one through hole is arranged on the circuit board 21, the electrical element 22 is installed on the second side of the circuit board 21 corresponding the through hole, and it has the pin of the first side of the circuit board 21 that protrudes;The insulating structure 3 is arranged in the shell 1, the insulating structure 3 includes at least one first insulating sheet 31 and insulating lug 32 arranged on the first insulating sheet 31, the first insulating sheet 31 is located at the first side of the circuit board 21, the insulating lug 32 is supported between the first insulating sheet 31 and the circuit board 21, so that the pin of the electrical element 22 is spaced from the first insulating sheet 31.
[0037] The utility model discloses a technical scheme through setting up the insulating lug 32 on the first insulating sheet 31, the height of the insulating lug 32 is used to support the first side of the circuit board 21 and the first insulating sheet 31, makes the pin of electrical element 22 installed on the circuit board 21 and the first insulating sheet 31 interval, in the process of testing, the pin of electrical element 22 does not easily contact the first insulating sheet 31 in the process of heavy ball falling, thereby reduces the possibility of the first insulating sheet 31 being punctured, promotes the installation of adapter 100.
[0038] It can be understood that the shell 1 provides physical protection as the shell of the entire adapter 100, reducing the influence of the external environment, such as dust, moisture, etc., on the internal circuit assembly 2 and the insulating structure 3. In order to facilitate the installation of the internal circuit assembly 2 and the insulating structure 3, in an embodiment, the shell 1 includes a first shell 11 and a second shell 12, and the first shell 11 and the second shell 12 can be detachably connected by screws, buckles, etc. The circuit board 21 is a platform for connecting electronic components, and the electrical components 22 are key components for completing specific electrical functions, such as resistors, capacitors, diodes, transistors, etc. It is worth noting that the circuit board 21 is provided with at least one through hole for mounting the electrical components 22, so that the pins of the electrical components 22 can pass from the second side to the first side of the circuit board 21, thereby establishing a connection with other components on the circuit board 21 to realize the specific function of the circuit board 21. The first insulating sheet 31 prevents the pins of the electrical components 22 from directly contacting the inner wall of the shell 1 or other metal parts, thereby reducing the risk of electrical failure. Therefore, the first insulating sheet 31 can be provided as one or more to meet specific electrical requirements.
[0039] It can be understood that the insulating lug 32 and the first insulating sheet 31 are connected together after being separated, and the insulating lug 32 can be fixed to the first insulating sheet 31 by various ways, such as bonding or clamping. However, this will increase the production steps and reduce the production efficiency. Therefore, in an embodiment, the insulating lug 32 and the first insulating sheet 31 are integrally provided. In this way, the two are produced as a whole rather than assembled later. Not only does this simplify the production steps and reduce manufacturing costs, but it also enhances the stability of the insulating structure 3 as a whole. The integral forming process includes injection molding, extrusion molding, and die molding, etc., which are not particularly limited here.
[0040] It can be understood that the insulating structure 3 can be made of elastic material, which can reduce the direct damage to the circuit assembly 2 when subjected to external force, and at this time, the height of the insulating bump 32 needs to be set high enough to avoid the electrical element piercing the first insulating sheet 31 when the insulating bump 32 is compressed to reduce its supporting height. This is not conducive to reducing the size of the adapter 100. Therefore, in an embodiment, the material of the insulating structure 3 includes a hard material. In this way, the hard material has high compression and tensile strength, which can maintain the shape unchanged under the condition of bearing a larger external force, which is conducive to reducing the height required to set the insulating bump 32. And it is conducive to the precision of the size formed when the insulating structure 3 is integrally set. Specifically, in an embodiment, the hard material includes PC - polycarbonate (Polycarbonate), because polycarbonate has very strong impact strength, which can reduce the required thickness of the insulating structure 3. In addition, it is also easy to be molded by injection molding, extrusion and other processes.
[0041] As shown in Figure 2 It can be understood that the insulating bump 32 is set at the place where there is no pin on the first side of the circuit board 21. Therefore, the insulating bump 32 can be set one or more. In order to enhance the supporting effect, the insulating bump 32 is provided with a plurality of insulating bumps 32, which are arranged at intervals on the first insulating sheet 31. In this way, by setting a plurality of insulating bumps 32, the supporting pressure on the circuit board 21 can be dispersed, and a plurality of supporting points can be provided, so that the pins of the electrical element 22 and the first insulating sheet 31 maintain a consistent distance, thereby improving the overall stability of the insulating structure 3.
[0042] In order to improve the stability of the insulating structure 3, in an embodiment, the insulating block 32 is provided with a first end 321 and a second end 322 opposite to each other, the first end 321 of the insulating block 32 is in abutment with the first side of the circuit board 21, and the second end 322 of the insulating block is connected with the first insulating sheet 31; wherein the area of the first end 321 is smaller than the area of the second end 322. In this way, since the first end 321 of the insulating block 32 has a smaller area, the first side of the circuit board 21 can be used as much as possible to install the electrical elements 22, thereby improving the flexibility of installation. The second end 322 of the insulating structure 3 has a larger area, which can provide a larger contact area to connect with the first insulating sheet 31, thereby providing a stronger mechanical connection strength. In addition, when the first end 321 of the insulating structure 3 with a small area is subjected to an external force, it can more effectively transmit the force to the second end 322 of the insulating structure 3 with a large area, thereby dispersing the pressure and avoiding local stress concentration, which can cause damage to the insulating structure 3. At the same time, it also helps to reduce the possibility of the insulating block 32 tilting or deviating when subjected to pressure, thereby maintaining the stability of the entire insulating structure. Wherein the area of the first end 321 of the insulating structure 3 is smaller than the area of the second end 322 of the insulating structure 3, which can form a structure similar to a trapezoid or a circular truncated cone, which is conducive to adapting to different thicknesses of the circuit board 21, and can provide stronger support force without increasing too much volume. Further, the insulating block 32 is provided in a circular truncated cone shape, so that the insulating block 32 can provide better stress distribution, reduce the occurrence of local excessive pressure, and further improve the service life of the insulating structure 3.
[0043] In order to further insulate and protect the circuit assembly 2, in an embodiment, the insulating structure 3 further comprises a second insulating sheet 33 provided on the second side of the circuit board 21, and the side end of the first insulating sheet 31 is connected with the side end of the second insulating sheet 33. In this way, the first insulating sheet 31 and the second insulating sheet 33 together form a double-layer insulating protection on the first side and the second side of the circuit board 21, effectively isolating the electrical elements 22 installed on the circuit board 21, thereby improving the electrical safety. In other embodiments, the second insulating sheet 33 and the first insulating sheet 31 can be integrally provided.
[0044] In view of the requirement of electromagnetic compatibility of modern electrical equipment, in an embodiment, an electromagnetic shielding layer 4 is arranged on the outer side of the insulating structure 3. The electromagnetic shielding layer 4 can prevent external electromagnetic interference from entering the inside of the adapter 100, and also reduce the leakage of electromagnetic waves generated inside the adapter 100 from affecting other devices. The electromagnetic shielding layer 4 can be realized by various ways such as metal foil, metal mesh, conductive paint, and conductive rubber. Further, in an embodiment, the electromagnetic shielding layer 4 comprises an aluminum foil which is wrapped on the outer side of the insulating structure 3. In this way, the aluminum foil has good electrical conductivity and flexibility, and is tightly wrapped on the outer side of the insulating structure 3 to form an electromagnetic shielding layer 4, which effectively isolates the electromagnetic environment inside and outside the adapter 100, so that the adapter 100 can also work stably in a complex electromagnetic environment.
[0045] The utility model also proposes a kind of electrical equipment, which comprises the adapter 100, and the specific structure of the adapter 100 refers to the above embodiment, since the electrical equipment uses all technical solutions of the above all embodiments, it at least has all beneficial effects brought by the technical solutions of the above embodiments, and here will not be described one by one.
[0046] The above is only exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structural transformation using the utility model specification and drawing contents under the technical concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.
Claims
1. An adapter, characterized in that, The application relates to an adapter. The adapter comprises: a housing; a circuit board assembly arranged in the housing, comprising a circuit board and at least one electrical component, the circuit board comprising a first side and a second side arranged oppositely, at least one through hole being arranged on the circuit board, the electrical component being arranged on the second side of the circuit board and having a pin extending out of the first side of the circuit board; 2. The adapter of claim 1, wherein, an insulation structure arranged in the housing, the insulation structure comprising at least one first insulation sheet and an insulation block arranged on the first insulation sheet, the first insulation sheet being arranged on the first side of the circuit board, the insulation block being arranged between the first insulation sheet and the circuit board to separate the pin of the electrical component and the first insulation sheet.
3. The adapter of claim 1 or 2, wherein, The insulation block is integrally arranged with the first insulation sheet.
4. The adapter of claim 1, wherein, The insulation structure is made of a hard material.
5. The adapter of claim 1, wherein, The insulation structure comprises a plurality of insulation blocks arranged on the first insulation sheet.
6. The adapter of claim 5, wherein, The insulation block comprises a first end and a second end arranged oppositely, the first end of the insulation block abutting against the first side of the circuit board, and the second end of the insulation block being connected with the first insulation sheet, wherein the area of the first end is smaller than the area of the second end.
7. The adapter of claim 1, wherein, The insulation block is in the shape of a circular truncated cone.
8. The adapter of claim 1, wherein, The insulation structure further comprises a second insulation sheet arranged on the second side of the circuit board, and the side end of the first insulation sheet is connected with the side end of the second insulation sheet.
9. The adapter of claim 8, wherein, The insulation structure is provided with an electromagnetic shielding layer on the outside.
10. An electrical appliance characterized by The electromagnetic shielding layer comprises an aluminum foil, and the aluminum foil is wrapped on the outer side of the insulation structure. The adapter comprises any one of the adapters according to claims 1 to 9.