Power supply assembly of sound box

Abstract

The utility model relates to the technical field of household appliances, in particular to a power supply assembly of a sound box. Comprising a first circuit board which is provided with a first plugging structure; the second circuit board is provided with a second plug-in structure which is in plug-in fit with the first plug-in structure; the power plug is arranged on the first circuit board or the second circuit board, and the power plug is provided with a plugging port connected with an external power line; wherein the first plug-in structure comprises a plug tongue, the second plug-in structure comprises a plurality of plug-in matching parts, the plurality of plug-in matching parts jointly define a plug-in channel, and the plug tongue is inserted in the plug-in channel in the direction close to the plug-in matching parts. Even if the insertion tongue and the insertion matching part shake due to repeated insertion and extraction, the stability of the connection relation between the insertion tongue and the insertion matching part is not affected, sudden voltage change caused by instability of the connection structure of the insertion tongue and the insertion matching part is avoided, and the fire risk is reduced.

Description

Technical Field

[0001] The present application relates to the field of display audio, and in particular to a power supply component of an audio system. Background Art

[0002] With the progress of society, people yearn for a more colorful life. As a form of entertainment that has been passed down for thousands of years, singing and dancing have penetrated into the lives of people of all ethnic groups. However, with the development and progress of science and technology, people have more and more requirements for the performance forms and venues of singing and dancing. The sound system is constantly improving and perfecting with people's needs. It can meet the needs of live sound reinforcement for concerts with tens of thousands of people, or meet the needs of playing musical instruments and singing karaoke at home.

[0003] Audio products usually need to be connected to an external power cord for power supply. The power supply components inside the audio are connected to the external power cord to supply electricity to functional components such as speakers and circuit boards. For power sockets installed perpendicular to the circuit board, they are usually fixed by punching holes in the circuit board and soldering. Due to the material limitations of solder, this structure is prone to damage due to repeated plugging and unplugging, high temperature or voltage shock. Since the AC power (110V / 220V) is a high-voltage interface, it is easy to produce sudden voltage changes when the connection is loose, resulting in instantaneous high temperature or electric sparks, which may burn the machine at the least and cause harm to life and property at the worst. Summary of the invention

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides a power supply component of a speaker.

[0005] The present application provides a power supply assembly for an audio system, comprising:

[0006] A first circuit board, wherein a first plug-in structure is provided on the first circuit board;

[0007] a second circuit board, on which a second plug-in structure plugged and matched with the first plug-in structure is provided;

[0008] A power plug, which is arranged on the first circuit board or the second circuit board and has a plug interface connected to an external power line;

[0009] The first plug-in structure includes an insert tongue, the second plug-in structure includes a plurality of plug-in mating parts, the plurality of plug-in mating parts together surround a plug-in channel, and the insert tongue is inserted into the plug-in channel from a direction close to the plug-in mating part.

[0010] In some embodiments, a plugging direction between the plug tongue and the plugging channel is the same as a plugging direction between the power plug and the external power cord.

[0011] In some embodiments, the plugging and mating part includes a plugging piece and a first welding pin. The first welding pin is disposed on a side of the plugging piece close to the second circuit board and is fixedly welded to the second circuit board. One end of the plugging piece is bent towards one side in the thickness direction to form an elastic part, and a plugging channel is formed between the elastic parts of the plurality of plugging and mating parts.

[0012] In some embodiments, the number of the plugging and mating parts is two, and the elastic parts of the two plugging and mating parts are disposed oppositely.

[0013] In some embodiments, the end of the plug tongue extends beyond the end of the elastic part.

[0014] In some embodiments, the plug tongue includes a plugging part and a second welding pin. The plugging part is inserted into the plugging channel, and the second welding pin is fixedly welded to the first circuit board.

[0015] In some embodiments, the power plug and the plug tongue are located on the same side of the first circuit board, and the power plug is fixedly welded to the first circuit board through a third welding pin.

[0016] In some embodiments, the second plugging structure further includes a fixing member, and the fixing member is connected between the plurality of plugging and mating parts to fixedly connect the plurality of plugging and mating parts.

[0017] In some embodiments, the fixing member is located on a side of the plugging piece away from the second circuit board.

[0018] In some embodiments, an isolation cover is further included, and the isolation cover is disposed outside the first circuit board.

[0019] The technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0020] For the power supply assembly of the audio provided by the embodiment of the present application, the power plug is electrically connected to the second circuit board through the first circuit board, the plug tongue and the plugging and mating part. When the external power cord is repeatedly plugged and unplugged from the power plug, since the plug tongue is fixedly plugged into the plugging channel formed by the plurality of plugging and mating parts, the contact area between the plug tongue and the plugging and mating part is relatively large. Even if the plug tongue and the plugging and mating part shake due to repeated plugging and unplugging, it does not affect the stability of the connection relationship between the two, avoiding sudden changes in voltage caused by the instability of the connection structure between the two and reducing the risk of fire. Description of the Drawings

[0021] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Structural schematic diagram of the sound device according to some embodiments of the present application;

[0024] Figure 2 Rear view of the sound device according to some embodiments of the present application;

[0025] Figure 3 Structural schematic diagram of the power supply component according to some embodiments of the present application;

[0026] Figure 4 Side view of the power supply component according to some embodiments of the present application;

[0027] Figure 5 Structural schematic diagram of the second circuit board and the second plugging structure according to some embodiments of the present application;

[0028] Figure 6 For Figure 5 Partial enlarged view of point A in

[0029] Figure 7 Top view of the second circuit board and the second plugging structure according to some embodiments of the present application;

[0030] Figure 8 Structural schematic diagram of the second plugging structure according to some embodiments of the present application;

[0031] Figure 9 Structural schematic diagram of the first circuit board, the tongue, the power plug and the external power cord according to some embodiments of the present application;

[0032] Figure 10 Figure 9 Another perspective schematic diagram of the corresponding structure;

[0033] Figure 11 Installation structural schematic diagram of the power supply component according to the embodiment of the present application;

[0034] Figure 12 Exploded view of the installation structure of the power supply component according to the embodiment of the present application;

[0035] Figure 13 Assembly structural schematic diagram of the fireproof cover, the button circuit board, the elastic conductive member and the protective cover according to the embodiment of the present application;

[0036] Figure 14Schematic diagram of the assembly structure of the fireproof cover, button circuit board, elastic conductive member and power supply assembly according to the embodiments of the present application;

[0037] Figure 15 Schematic diagram of the structure of the button circuit board according to the embodiments of the present application;

[0038] Figure 16 Schematic diagram of the structure of the fireproof cover according to the embodiments of the present application.

[0039] Wherein, 1, the first circuit board; 2, the second circuit board; 3, the external power cord; 4, the fireproof cover; 5, the isolation cover; 10, the tongue; 101, the second welding foot; 11, the power plug; 111, the second welding foot; 112, the insertion interface; 20, the second insertion structure; 21, the insertion channel; 201, the insertion mating part; 202, the first welding foot; 203, the elastic part; 204, the fixing part; 100, the housing; 100a, the first side; 100b, the button; 401, the first insertion board; 402, the limiting board; 403, the first fixing hole; 404, the second fixing hole; 601, the connecting board; 602, the insertion hole. Detailed implementation manners

[0040] In order to more clearly understand the above objects, features and advantages of the present application, the solutions of the present application will be further described below. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0041] Many specific details are set forth in the following description in order to fully understand the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present application, rather than all of the embodiments.

[0042] It should be noted that the directional indications (such as up, down, left, right, front, back...) in the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0043] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, when describing pipelines, the terms "connected" and "coupled" used in the present application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0045] In a traditional audio structure, capacitive buttons are generally used to control volume, playback progress, etc. Capacitive buttons are usually assembled by bonding. In a larger audio structure, screws or other means are usually used to fix the capacitive buttons. This installation method requires re-designing the circuit board according to different design requirements. On the other hand, the installation of the circuit board often requires manual positioning, and the button circuit board and the control circuit board also need to be fixed by internal wires or slots, which further reduces the material universality.

[0046] As Figure 1 , Figures 13 to 16 shown, to solve the above technical problems, an embodiment of the present application provides an audio, including:

[0047] A housing 100, on which a button 100b is provided. The housing 100 is the outer shell of the audio, serving as a decoration and protection.

[0048] A button circuit board 6, disposed inside the housing 100 and corresponding to the button 100b, for receiving a capacitance change signal formed by a pressure change on the button.

[0049] An elastic conductive member 7, one side of the elastic conductive member 7 is in contact with the button 100b, and the other side is in contact with and electrically connected to the button circuit board 6. The elastic conductive member 7 transmits the pressure change on the button to the button circuit board 6 through the elastic conductive member 7.

[0050] When the button 100b is pressed, the elastic conductive member 7 is squeezed, causing a signal change on the button circuit board 6. The button circuit board 6 is connected to the control component of the audio. After the control component senses the signal change on the button circuit board 6, it issues a control signal to control volume increase or decrease, fast forward, rewind, turn on or off the audio. In the audio provided by the embodiment of the present application, the elastic conductive member 7 is connected between the button 100b and the button circuit board 6, and the pressure change on the button 100b is transmitted to the button circuit board 6 in the form of an electrical signal through the elastic conductive member 7, and then the audio is controlled according to the pressure change on the button 100b, simplifying the installation structure of the capacitive button.

[0051] In some embodiments, a key is provided on the first side 100a of the housing 100, and the key circuit board 6 is arranged perpendicular or parallel to the first side 100a. Specifically, the first side of the housing 100 is preferably the upper side of the housing 100. The key circuit board 6 is arranged perpendicular or parallel to the first side 100a, and at least two sides of the elastic conductive member 7 are required to be conductive.

[0052] Exemplarily, when the key circuit board 6 is arranged perpendicular to the first side 100a of the housing 100 and parallel to the front side or the rear side of the housing 100, the upper side of the elastic conductive member 7 is attached to the key, and the front side or the rear side of the elastic conductive member 7 is attached and fixed to the key circuit board 6; when the key circuit board 6 is parallel to the first side 100a, the upper side of the elastic conductive member 7 is attached to the key, and the lower side of the elastic conductive member 7 is attached and fixed to the key circuit board 6.

[0053] In some embodiments of the present application, the number of keys 100b is multiple, and the number of elastic conductive members 7 is equal to the number of keys 100b and they are arranged in one-to-one correspondence. The key 100b is a capacitive touch key used to detect an effective touch of a finger, and touching the capacitive touch screen achieves the function similar to that of a touch key. Compared with traditional mechanical keys, it has many advantages such as long service life, less occupied space, and easy operation.

[0054] When not touched, there is only one capacitor inside the key 100b. It is first discharged and then charged, and the charging time T1 required is measured by input capture (or other methods). When touched, another capacitor is equivalently connected in parallel inside the key, the total capacitance increases, and the charging time is prolonged. By measuring the charging time T2 required at this time, if T2 > T1, it means it has been touched. That is, the control system judges whether there is a touch by detecting the charging and discharging time of the capacitor, and then performs corresponding control.

[0055] The multiple keys 100b are electrically connected to the key circuit board 6 through separate elastic conductive members 7 to achieve separate control of the multiple keys 100b.

[0056] In some embodiments of the present application, the multiple elastic conductive members 7 are arranged at intervals, and adjacent elastic conductive members 7 are spaced from each other, achieving insulation between them to avoid mutual influence between adjacent elastic conductive members 7.

[0057] In some embodiments of the present application, the elastic conductive member 7 includes conductive sponge or conductive rubber. Taking the conductive sponge as an example, its structure is that a sponge is arranged inside a metal wire mesh to form a conductive sponge, which is also an antistatic conductive material commonly used in household appliances and has a low cost; the key circuit board 6 and the first side can be placed parallel or perpendicular to each other, and they may not be in contact at all, or they may be in contact through a structure for fixing the circuit board.

[0058] In some embodiments of the present application, a fireproof cover 4 is further provided inside the housing 100. One side of the fireproof cover 4 is open, and the button circuit board 6 is disposed at the open portion of the fireproof cover 4, covering at least part of the open portion. The fireproof cover 4 is a structure inherent in the audio. In some embodiments of the present application, it serves to fixedly mount the button circuit board 6.

[0059] In some embodiments of the present application, the audio further includes a power supply circuit board and a plug-in circuit board. The power supply circuit board is disposed inside the fireproof cover 4, and the plug-in circuit board is arranged side by side with the button circuit board 6 at the open portion of the fireproof cover 4. The plug-in circuit board is electrically connected to the power supply circuit board through a plug-in structure. The plug-in structure includes a mating tongue 10 and a plug-in channel formed by a plug-in mating portion 201.

[0060] Exemplarily, the button circuit board 6 is disposed on the left side of the open portion, and the plug-in circuit board is disposed on the right side. A plurality of second fixing holes 404 are provided on the left side of the open portion, and a plurality of first fixing holes 403 are provided on the right side. The first fixing holes 403 are used to mount the protective cover, and the second fixing holes 404 are used to fixedly mount the button circuit board 6.

[0061] In some embodiments of the present application, a first plug-in board 401 and a limiting board 402 are formed by outward protrusion at the open portion of the fireproof cover 4. The first plug-in board 401 is disposed along a direction parallel to the first side surface. The number of the limiting boards 402 is two. The two limiting boards 402 are perpendicular to the first plug-in board 401 and are located at both ends of the first plug-in board 401. A plug-in hole 602 for the first plug-in board 401 to pass through is provided at the position of the button circuit board 6 corresponding to the first plug-in board 401. The elastic conductive member 7 is disposed in the card slot formed by the first plug-in board 401 and the two limiting boards 402 and is fixedly attached to the button circuit board 6.

[0062] In some embodiments, one end of the button circuit board 6 opposite to the first side surface protrudes towards the direction close to the first side surface to form a connecting board 601. The two limiting boards 402 are respectively disposed on both sides of the connecting board 601. The elastic conductive member 7 is fixedly attached to the connecting board 601.

[0063] Exemplarily, the elastic conductive member 7 is limited by the card slot jointly formed by the two limiting boards 402, one first plug-in board 401, and the connecting board 601. When fixing the elastic conductive member 7, an adhesive can be coated between the elastic conductive member 7 and the first plug-in board 401 to enhance the fixing effect of the elastic conductive member 7.

[0064] In actual production, the button circuit board 6 can first cooperate with the plug-in board on the fireproof cover 4, and then the elastic conductive member 7 is fixed in the card slot by pasting or other fixing methods. Then, it cooperates with the button 100b on the first housing 100 according to the required contact method. Through this method, the vertical installation of the button circuit board 6 on the first side can be realized, which not only reduces the cost but also optimizes the flexibility of the product appearance design.

[0065] In the audio structure, the external power cord is plugged and fixed to the exposed power plug of the audio by plugging. In the traditional audio structure, the power plug is arranged perpendicular to the power board inside the audio, and the inner end of the power plug is fixed to the power board by soldering. Due to the material limitation of the solder, it is easy to be damaged under the repeated plugging and unplugging of the external power cord and the power plug or high temperature / voltage impact; since the mains power (110V / 220V) is a strong electrical interface, when the connection between the power plug and the power board becomes loose, sudden voltage changes are likely to occur, resulting in instantaneous high temperature or electric sparks, which may cause damage to the machine at least and endanger life and property at worst.

[0066] To solve the above technical problems, the embodiment of the present application provides a power supply component for an audio, which realizes the electrical connection between the power plug and the inside of the audio by setting the plug tongue to cooperate with the plugging channel formed by the plugging and mating part, reducing the safety risk caused by the solder dropping due to plugging and unplugging.

[0067] Among them, in any one of the technologies of the embodiment of the present application, one or more of the above technical problems can be solved to a certain extent and a certain invention purpose can be achieved; multiple technical disclosures can also be combined into an overall solution to solve one or more of the above technical problems and achieve a certain invention purpose; or part of the technical disclosures can be selected and combined into an overall solution, while adopting the existing technology and the deteriorated solution, but the deteriorated trend can be compensated by the means of the present technical disclosure, and one or more of the above technical problems can be solved to a certain extent and a certain invention purpose can be achieved as a whole; each technical disclosure is combined into a complete technical solution, and all constitute an organic and inseparable overall solution, solving the above technical problems and achieving a certain invention purpose as a whole.

[0068] Any technical disclosure in the embodiment of the present application, as well as the re-combination of multiple technical disclosures, can form a complete technical solution, and can solve one or more of the above multiple technical problems and achieve the invention purpose, which all belong to the content of the present application and the content directly and undoubtedly determined according to the content of the present application.

[0069] In some embodiments, such as Figures 1 to 12 shown, the embodiment of the present application provides a power supply component for an audio, including:

[0070] The first circuit board 1 is a plug-in circuit board, and a first plug-in structure is provided on the first circuit board 1.

[0071] In some embodiments, the power supply assembly further includes a second circuit board 2, which is a power supply circuit board, and a second plug-in structure 20 that is pluggably engaged with the first plug-in structure is provided on the second circuit board 2.

[0072] In some embodiments, the power supply assembly further includes a power plug 11, which is provided on the first circuit board 1 or the second circuit board 2, and the power plug 11 has a plug interface 112 for electrically connecting with an external power cord 3.

[0073] Wherein, the first plug-in structure includes a plug tongue 10, the second plug-in structure 20 includes a plurality of plugging and mating parts 201, the plurality of plugging and mating parts 201 jointly enclose a plugging channel 21, and the plug tongue 10 is inserted into the plugging channel 21 from the direction close to the plugging and mating parts 201.

[0074] Exemplarily, as Figure 3 and Figure 4 shown, the inner end of the power plug 11 is located inside the audio housing 4 and is fixedly connected to the first circuit board 1 or the second circuit board 2, and the plug interface 112 is located outside the audio housing 4. In some embodiments of the present application, the second circuit board 2 is a power supply board, the power plug 11 is fixedly connected to the first circuit board 1, and the power plug 11 is electrically connected to the second circuit board 2 through the first circuit board 1, the plug tongue 10 and the plugging and mating parts 201. When the external power cord 3 is repeatedly plugged and unplugged from the power plug 11, since the plug tongue 10 is plugged and fixed in the plugging channel 21 formed by the plurality of plugging and mating parts 201, the contact area between the plug tongue 10 and the plugging and mating parts 201 is relatively large. Even if the plug tongue 10 and the plugging and mating parts 201 shake due to repeated plugging and unplugging, it does not affect the stability of the connection relationship between the two, avoiding sudden changes in voltage caused by the instability of the connection structure between the two and reducing the risk of fire.

[0075] The number of the first plug-in structure and the second plug-in structure 20 is equal, and the number of the first plug-in structure is one or more. As Figure 3 shown, in some embodiments of the present application, the number of both the first plug-in structure and the second plug-in structure 20 is two.

[0076] In some embodiments, the first circuit board 1 and the second circuit board 2 may be arranged in parallel or perpendicular to each other.

[0077] Exemplarily, in combination with Figure 3 and Figure 4As shown, in some embodiments of the present application, the first circuit board 1 is perpendicular to the second circuit board 2. The first circuit board 1 is located on one side of the second circuit board 2. The tongue 10 is arranged in a direction perpendicular to the first circuit board 1. A plurality of plugging and mating portions 201 are arranged on one side surface in the thickness direction of the second circuit board 2. The length direction of the plugging channel 21 formed between the plurality of plugging and mating portions 201 is parallel to the second circuit board 2. The tongue 10 is inserted into the plugging channel 21 along the length direction of the plugging channel 21. The orientation of the plugging interface 112 on the power plug 11 is consistent with the length direction of the tongue 10. Therefore, the plugging direction of the external power cord 3 and the power plug 11 is the same as the plugging direction of the tongue 10 and the plugging channel 21. Moreover, since the plugging channel 21 has a certain length, even if the repeated plugging and unplugging of the external power cord 3 causes the position of the first circuit board 1 to shake and drives the tongue 10 to have a relative displacement in the plugging channel 21, the tongue 10 and the plugging and mating portion 201 are always in contact, that is, the first circuit board 1 is always electrically connected to the second circuit board 2, improving the stability of the connection structure.

[0078] Exemplarily, in some other embodiments of the present application, the first circuit board 1 is parallel to the second circuit board 2. The length direction of the plugging channel 21 formed by the plurality of plugging and mating portions 201 is perpendicular to the second circuit board 2. The tongue 10 is arranged perpendicular to the first circuit board 1. The first circuit board 1 and the second circuit board 2 are close to each other so that the tongue 10 is inserted into the plugging channel 21.

[0079] Regardless of whether the first circuit board 1 is perpendicular or parallel to the second circuit board 2, the plugging direction of the plugging interface 112 on the power plug 11 is the same as the plugging direction of the tongue 10 and the plugging channel 21.

[0080] In some embodiments, in combination with Figures 6 to 8 As shown, in some embodiments of the present application, the plugging and mating portion 201 includes a plugging piece and a first welding leg 202. The first welding leg 202 is arranged on the side of the plugging piece close to the second circuit board 2 and is fixedly welded to the second circuit board 2. One end of the plugging piece is bent toward one side in the thickness direction to form an elastic portion 203. The plugging channel 21 is formed between the elastic portions 203 of the plurality of plugging and mating portions 201.

[0081] In some embodiments, the insertion piece is a thin sheet structure made of a conductive material. The thin sheet structure is a rectangular structure, and both the length direction and the width direction of the thin sheet structure are perpendicular to the second circuit board 2, and the thickness direction of the thin sheet structure is parallel to the second circuit board 2. A first welding foot 202 is formed on one side of the thin sheet structure along the length direction or one side of the width direction. The first welding foot 202 is used for welding and fixing with the second circuit board 2. One end of the thin sheet structure along the length direction is bent towards one side in the thickness direction to form an elastic part 203. The elastic part 203 is parallel to the length direction of the thin sheet structure, and the shape of the elastic part 203 is U-shaped or V-shaped. A plurality of insertion and mating parts 201 are arranged around a center line, and the center line is parallel to the length direction of the insertion and mating parts 201. The ends of the plurality of insertion and mating parts 201 are bent towards the direction close to the center line to form an insertion channel 21 between the plurality of elastic parts 203.

[0082] The elastic part 203 has a certain amount of elastic deformation. When subjected to an external force, it can undergo a certain amount of elastic deformation, and thus can change the size of the cross-section of the insertion channel 21. In some embodiments of the present application, the size of the cross-section of the insertion channel 21 formed between the elastic parts 203 of the plurality of insertion and mating parts 201 is slightly smaller than the size of the cross-section of the insertion tongue 10 in the natural state. In this way, after the insertion tongue 10 is inserted into the insertion channel 21, it will exert a certain extrusion force on the elastic part 203. The elastic part 203 undergoes elastic deformation in the direction away from the insertion tongue 10, and the elastic part 203 exerts a certain extrusion force on the insertion tongue 10 due to the elastic deformation, improving the connection strength between the insertion tongue 10 and the insertion and mating part 201.

[0083] In some embodiments, after the insertion tongue 10 is inserted into the insertion channel 21 in place, the end of the insertion tongue 10 away from the first circuit board 1 extends beyond the end of the elastic part 203. That is to say, the end of the elastic part 203 abuts against the outer surface of the insertion tongue 10. When the external power cord 3 is repeatedly plugged and unplugged with the power plug 11, resulting in loosening of the connection between the insertion tongue 10 and the insertion channel 21, even if there is a tendency for the insertion tongue 10 and the insertion channel 21 to move away from each other, the insertion tongue 10 can still make good contact with the insertion and mating part 201 to achieve electrical connection, avoiding the phenomenon of sudden voltage mutation caused by their sudden separation.

[0084] In some embodiments, the end of the elastic part 203 is inclined towards the side close to the insertion piece, so that the bottom end of the insertion channel 21 forms a gradually opening structure. On the one hand, it is convenient for the insertion tongue 10 to pass through the insertion channel 21. On the other hand, when plugging and unplugging with force, it is ensured that the insertion tongue 10 and the insertion channel 21 can move, avoiding loosening at the connection between the insertion tongue 10 and the first circuit board 1.

[0085] Exemplarily, such as Figure 6 and Figure 8As shown, in some embodiments of the present application, the first welding pin 202 is located on one side in the width direction of the plugging and mating portion 201 and is disposed near one end in the length direction of the plugging and mating portion 201. A first welding hole is provided on the second circuit board 2, and the first welding hole penetrates through the thickness direction of the second circuit board 2. The first welding pin 202 passes through the first welding hole and is fixedly welded to the second circuit board 2. The root of the first welding pin 202 is widened so that after the first welding pin 202 is welded to the second circuit board 2, there is a certain gap between the plugging and mating portion 201 and the second circuit board 2, avoiding contact between other positions of the plugging and mating portion 201 except the first welding pin 202 and the second circuit board 2, which may cause a short circuit phenomenon.

[0086] In some embodiments, at least a part of the elastic portion 203 of the plugging and mating portion 201 extends out of the second circuit board 2. When the plug tongue 10 is plugged into the plugging channel 21, there is also a certain gap between the plug tongue 10 and the second circuit board 2, avoiding contact with the second circuit board 2 and causing a short circuit phenomenon, further improving the safety of the connection structure.

[0087] Similarly, in some other embodiments of the present application, the first welding pin 202 may also be located on one side in the length direction of the plugging and mating portion 201. The length direction of the plugging and mating portion 201 is perpendicular to the second circuit board 2, and the width direction and thickness direction of the plugging and mating portion 201 are both parallel to the second circuit board 2. The plugging and mating portion 201 is fixedly welded to the second circuit board 2 through the first welding pin 202 and the first welding hole on the second circuit board 2. The elastic portion 203 is located at one end of the plugging and mating portion 201 away from the second circuit board 2, and the plug tongue 10 is inserted into the plugging channel 21 along the direction close to the second circuit board 2.

[0088] In some embodiments, in some embodiments of the present application, the number of the plugging and mating portions 201 is two, and the elastic portions 203 of the two plugging and mating portions 201 are arranged oppositely.

[0089] In some embodiments, the number of the plugging and mating portions 201 and the arrangement manner among the multiple plugging and mating portions 201 are related to the relative position between a single plugging and mating portion 201 and the second circuit board 2.

[0090] When the first welding pin 202 is located on one side in the width direction of the plugging piece, the number of the plugging and mating portions 201 is two, the two plugging and mating portions 201 are arranged oppositely, and a plugging channel 21 is formed between the elastic portions 203 of the two plugging and mating portions 201.

[0091] When the first welding pin 202 is located on one side in the length direction of the plugging piece, the number of the plugging and mating portions 201 may be two, three or more, and a plugging channel 21 is formed between the elastic portions 203 of the multiple plugging and mating portions 201.

[0092] In some embodiments, in some embodiments of the present application, the tongue 10 includes a plugging portion and a second welding leg 101. The plugging portion of the tongue 10 is within the plugging channel 21, and the second welding leg 101 is fixedly welded to the first circuit board 1.

[0093] In some embodiments, the length direction of the tongue 10 is perpendicular to the first circuit board 1. The second welding leg 101 is disposed at one end of the plugging portion along the length direction, and the second welding leg 101 extends along the length direction of the plugging portion. The first circuit board 1 is provided with a second welding hole, and the second welding hole penetrates through the first circuit board 1 along the thickness direction of the first circuit board 1. The second welding leg 101 passes through the second welding hole and is fixedly welded to the first circuit board 1.

[0094] The root of the plugging portion is designed with a widened structure to avoid the risk of short circuit caused by the contact between the plugging and mating portion 201 and the first circuit board 1 when the tongue 10 is plugged and mated with the plugging channel 21.

[0095] In some embodiments, in some embodiments of the present application, the power plug 11 and the tongue 10 are located on the same side of the first circuit board 1, and the power plug 11 is fixedly welded to the first circuit board 1 through a third welding leg.

[0096] In some embodiments, the third welding leg is located at one end of the power plug 11 away from the plug interface 112. The number of the third welding legs is three. The first circuit board 1 is correspondingly provided with three third welding holes, and the third welding holes penetrate through the first circuit board 1 along the thickness direction. The third welding legs pass through the third welding holes one by one and are fixedly welded to the first circuit board 1.

[0097] The power plug 11 and the tongue 10 may be disposed on the same side of the first circuit board 1, or may be disposed on different sides of the first circuit board 1.

[0098] In some embodiments, the second plugging structure 20 further includes a fixing member 204. The fixing member 204 is connected between a plurality of plugging and mating portions 201 to fixedly connect the plurality of plugging and mating portions 201.

[0099] Exemplarily, in some embodiments of the present application, the number of the plugging and mating portions 201 is two. The two plugging and mating portions 201 are fixedly connected through the fixing member 204. In some embodiments, one end of the fixing member 204 is connected to one plugging and mating portion 201, and the other end is connected to the other plugging and mating portion 201. The fixing member 204 provides a certain pulling force for the two plugging and mating portions 201, and further provides a certain pre-tightening force for the two elastic portions 203, ensuring that the two elastic portions 203 can have a certain binding force on the tongue 10.

[0100] When the number of the plug-in matching parts 201 is greater than two, any two adjacent plug-in matching parts 201 are connected by a fixing member 204. The fixing member 204 connects a plurality of plug-in matching parts 201 together, provides a certain tensile force for the plurality of plug-in matching parts 201, and further provides a certain pre-tightening force for the plurality of elastic parts 203, ensuring that the plurality of elastic parts 203 can have a certain binding force on the plug tongue 10.

[0101] In some embodiments, the fixing member 204 is made of the same material as the plug-in matching part 201. In some embodiments, the fixing piece and the plug-in matching part 201 are cut and bent from a single piece of plate.

[0102] In some embodiments of the present application, the fixing member 204 is arched and does not interfere with the elastic part 203.

[0103] Exemplarily, when the number of the plug-in matching parts 201 is two, the fixing member 204 is located on the side of the plug-in matching part 201 away from the second circuit board 2, and the fixing member 204 arches away from the plug-in matching part 201 to prevent the plug tongue 10 from contacting the fixing member 204 when being plugged into the plugging channel 21.

[0104] In some embodiments, the audio has an installation shell 4 with one side open. The first circuit board 1 and the second circuit board 2 are both located inside the installation shell 4. The power supply assembly of the audio further includes an isolation cover 5. The isolation cover 5 covers the outside of the first circuit board 1 to shield the first circuit board 1, prevent the connection structure of the first circuit board 1 and the second circuit board 2 from being exposed outside, isolate the high-voltage structure, and provide more protection for the safety of maintenance personnel.

[0105] In some embodiments, the isolation cover 5 is fixedly connected to the installation shell. The isolation cover 5 and the installation shell 4 together enclose a small cavity. The first circuit board 1, the plug tongue 10 and the plug-in matching part 201 are all separated in the cavity to prevent the high-voltage part from contacting the human body.

[0106] The above are only the specific embodiments of the present application, which enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power supply component for an audio system, characterized in that: include: A first circuit board, wherein a first plug-in structure is provided on the first circuit board; a second circuit board, on which a second plug-in structure plugged and matched with the first plug-in structure is provided; A power plug, which is arranged on the first circuit board or the second circuit board and has a plug interface connected to an external power line; The first plug-in structure includes an insert tongue, the second plug-in structure includes a plurality of plug-in mating parts, the plurality of plug-in mating parts together surround a plug-in channel, and the insert tongue is inserted into the plug-in channel from a direction close to the plug-in mating part.

2. The power supply assembly of the audio system according to claim 1, characterized in that: The plugging direction between the plugging tongue and the plugging channel is the same as the plugging direction between the power plug and the external power line.

3. The power supply assembly of the audio system according to claim 1, characterized in that: The plug-in mating portion includes a plug-in piece and a first welding foot. The first welding foot is arranged on a side of the plug-in piece close to the second circuit board and is welded and fixed to the second circuit board. One end of the plug-in piece is bent toward one side in the thickness direction to form an elastic portion. The plug-in channel is formed between the elastic portions of the plurality of plug-in pieces.

4. The power supply assembly of the audio system according to claim 3, characterized in that: The number of the plug-in fitting parts is two, and the elastic parts of the two plug-in fitting parts are arranged opposite to each other.

5. The power supply assembly of the audio system according to claim 3, characterized in that: An end of the inserting tongue exceeds an end of the elastic portion.

6. The power supply assembly of the audio system according to claim 1, characterized in that: The plug tongue includes an inserting portion and a second welding leg, the inserting portion is inserted into the inserting channel, and the second welding leg is welded and fixed to the first circuit board.

7. The power supply assembly of the audio system according to claim 1, characterized in that: The power plug and the plug tongue are located on the same side of the first circuit board, and the power plug and the first circuit board are fixed by welding through a third welding foot.

8. The power supply assembly of the audio system according to claim 3, characterized in that: The second plug-in structure further includes a fixing member, which is connected between the plurality of plug-in mating parts to fix the plurality of plug-in mating parts in connection.

9. The power supply assembly of the audio system according to claim 8, characterized in that: The fixing member is located at a side of the plug-in sheet away from the second circuit board.

10. The power supply assembly of the audio system according to claim 1, characterized in that: It also includes an isolation cover, which is arranged on the outer side of the first circuit board.

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