Power supply structure and power supply board fixing assembly

Abstract

The utility model relates to a power supply structure and a power panel fixing assembly, and the power panel fixing assembly comprises a housing, a first end cover, and a second end cover. A cavity for accommodating the power panel is formed in the inner side of the shell, and the shell comprises a first opening and a second opening which are oppositely arranged in the length direction; the cavity is arranged between the first opening and the second opening and is communicated with the first opening and the second opening; the first end cover part is embedded from the first opening to cover the first opening, and the second end cover part is embedded from the second opening to cover the second opening; and the first end cover and / or the second end cover are / is matched with the power panel to fix the power panel. The power panel fixing assembly fixes the power panel through the cooperation of the first end cover and / or the second end cover and the power panel, thereby simplifying the installation program of the power panel and improving the installation efficiency of the power panel. The power supply structure is provided with the power supply board fixing assembly, so that the power supply board mounting efficiency and the power supply board mounting stability can be improved.

Description

Technical Field

[0001] The utility model relates to the field of power supplies, in particular to a power supply structure and a power supply board fixing component. Background Art

[0002] The power board of the power supply structure in the related art is usually fixed in the housing by screws, and the installation process is cumbersome and the installation efficiency is low. In addition, there is a problem that the screws may become loose and the power board may be installed unstable. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an improved power board fixing assembly and further provide an improved power supply structure.

[0004] The technical solution adopted by the utility model to solve the technical problem is: constructing a power board fixing assembly, including a shell, a first end cover and a second end cover;

[0005] A cavity for accommodating the power board is formed inside the housing, and the housing includes a first opening and a second opening arranged opposite to each other along the length direction; the cavity is arranged between the first opening and the second opening and communicates with the first opening and the second opening;

[0006] The first end cover portion is inserted from the first opening to cover the first opening, and the second end cover portion is inserted from the second opening to cover the second opening;

[0007] The first end cover and / or the second end cover cooperate with the power board to fix the power board.

[0008] In some embodiments, the first end cap and / or the second end cap cooperates with the power board plug-in card to fix the power board;

[0009] Alternatively, the first end cover and the second end cover abut against the power board, and the first end cover and the second end cover cooperate with each other to clamp and fix the power board.

[0010] In some embodiments, the first end cover is provided with a first plug-in structure for inserting and limiting the power board;

[0011] And / or, the second end cover is provided with a second plug-in structure for inserting and limiting the power board.

[0012] In some embodiments, the first card insertion structure includes a slot;

[0013] The first end cover comprises a first embedded part embedded in the shell; the first embedded part has a third opening and is internally provided with a partition; a boss is arranged on the bottom wall of the first embedded part, and the boss supports the partition; the slot is formed between the partition and the boss.

[0014] In some embodiments, an inner wall of the first embedded part is provided with a first guide rib for guiding the power board to be inserted into the first card structure.

[0015] In some embodiments, the second card structure comprises a notch;

[0016] The second end cover comprises a second embedded part; the second embedded part has a fourth opening and is internally provided with a partition plate; a second guide rib for guiding the power board card is arranged on the bottom wall of the second embedded part; the second guide rib is connected with the partition plate;

[0017] The notch is arranged at the connection between the partition plate and the second guide rib.

[0018] In some embodiments, the power board fixing assembly further comprises a waterproof sealing assembly arranged on the power board, which is attached to the first end cover or the second end cover.

[0019] In some embodiments, the waterproof sealing assembly comprises a waterproof pad and a waterproof sealing ring; the waterproof pad is arranged on one side of the power board; the waterproof sealing ring is sleeved on the first end cover and is in interference fit with the first end cover.

[0020] The utility model also constructs a kind of power supply structure, including power board and the power board fixing assembly of the utility model;

[0021] The power board is at least partially installed in the cavity of the power board fixing assembly, and extends from the first opening of the power board fixing assembly to the second opening of the power board fixing assembly, at least one end of the power board has a terminal, and at least partially located outside the cavity.

[0022] In some embodiments, the terminal comprises two groups, one group of the terminal is arranged on one end of the power board, and the other group of the terminal is arranged on the other end of the power board.

[0023] The first end cover of the power board fixing assembly is provided with a first through hole for the terminal to pass out;

[0024] The second end cover of the power board fixing assembly is provided with a second through hole for the terminal to pass out.

[0025] The power supply structure and the power supply board fixing assembly have the following beneficial effects: the power supply board fixing assembly is provided with a first end cover capable of being partially embedded and covering the first opening of the shell, and a second end cover capable of being partially embedded and covering the second opening of the shell, the first end cover and / or the second end cover are used to fix the power supply board in cooperation with the power supply board, so that the installation procedure of the power supply board is simplified and the installation efficiency of the power supply board is improved. The power supply structure is provided with the power supply board fixing assembly, so that the installation efficiency and stability of the power supply board are improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described below in combination with the drawings and examples, wherein:

[0027] Figure 1 is a structure schematic view of the power supply structure in some examples of the utility model;

[0028] Figure 2 is Figure 1 is a structure exploded view of the power supply structure shown in the figure;

[0029] Figure 3 is Figure 2 is a shell structure schematic view of the power supply structure shown in the figure;

[0030] Figure 4 is Figure 2 is a power supply board structure schematic view of the power supply structure shown in the figure;

[0031] Figure 5 is Figure 2 is a first end cover structure schematic view of the power supply structure shown in the figure;

[0032] Figure 6 is Figure 2 is a second end cover structure schematic view of the power supply structure shown in the figure. DETAILED DESCRIPTION

[0033] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation mode of the utility model will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or position relations indicated by "up", "down", "bottom", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, and are constructed and operated in a specific direction, only for the convenience of describing the technical scheme, and do not indicate that the device or element must have a specific direction, therefore, it cannot be understood as a limitation on the utility model.

[0034] It should be noted that, unless otherwise explicitly specified and limited, the terms such as "mounting", "connecting", "fixing", "arranging" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or one or more intervening elements can be present. The terms "first", "second", "third" and the like are only for the convenience of describing the technical solutions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Figure 1 And Figure 2 Some preferred embodiments of the power supply structure of the present application are shown. The power supply structure can be used to connect an external power supply and a power consumption device. The external power supply can be a commercial power supply. The power consumption device can be a lamp. Of course, it can be understood that in other embodiments, the external power supply can not be limited to AC power input, but can also be DC power input. The power consumption device is not limited to a lamp, but can be an electronic device, such as a notebook computer and the like. The power supply structure has the advantages of simple structure, easy assembly, good sealing effect and high user experience.

[0036] As Figure 1 And Figure 2 shown, in some embodiments, the power supply structure includes a power board fixing assembly and a power board 20; the power board fixing assembly includes a housing 10, a first end cover 30 and a second end cover 40. The housing 10 can be used for mounting the power board 20. The first end cover 30 and the second end cover 40 are arranged at both ends of the housing 10 for sealing the housing 10. The first end cover 30 and / or the second end cover 40 can cooperate with the power board 20 to fix the power board 20. Specifically, in some embodiments, the first end cover 30 and / or the second end cover 40 can be inserted into the power board 20 to fix the power board 20. Of course, it can be understood that in other embodiments, the first end cover 30 and the second end cover 40 abut against the power board 20, and the two can cooperate to clampingly fix the power board 20.

[0037] As Figure 2 And Figure 3As shown, in some embodiments, the housing 10 is longitudinally elongated, and the cross section of the housing 10 can be substantially square. The housing 10 can be an insulating housing, such as a plastic housing. In some embodiments, the housing 10 can also be a metal housing, such as an aluminum housing. In other embodiments, the cross section of the housing 10 can not be limited to a square shape, and the housing 10 can also be circular.

[0038] In some embodiments, the housing 10 is a hollow structure with both ends open. The housing 10 can include a first side wall 11, a second side wall 12, a third side wall 13, and a fourth side wall 14. The first side wall 11 and the second side wall 12 are opposite and spaced apart. The second side wall 12 is disposed between and connected to the first side wall 11 and the second side wall 12. The fourth side wall 14 is disposed between and connected to the first side wall 11 and the second side wall 12, and is opposite the fourth side wall 14. The first side wall 11 and the second side wall 12 can be parallel. The third side wall 13 and the fourth side wall 14 can be parallel. The third side wall 13 and the first side wall 11 and the second side wall 12 can be perpendicular. The fourth side wall 14 and the first side wall 11 and the second side wall 12 can be perpendicular. The first side wall 11, the second side wall 12, the third side wall 13, and the fourth side wall 14 can be an integral structure. Specifically, it can be formed by bending a metal sheet, or it can be formed by injection molding. In some embodiments, a cavity 15 is formed inside the housing 10. Specifically, the cavity 15 can be formed between the first side wall 11 and the second side wall 12, and can be bounded by the first side wall 11, the second side wall 12, the third side wall 13, and the fourth side wall 14. The cavity 15 can be used to accommodate at least part of the power board 20.

[0039] In some embodiments, the housing 10 further includes a first opening 16 and a second opening 17, which can be opposite along the length direction of the housing 10. The first opening 16 and the second opening 17 are both disposed between the first side wall 11 and the second side wall 12. The cavity 15 is disposed between and communicates with the first opening 16 and the second opening 17. The first opening 16 and the second opening 17 can be used for mounting the power board 20. In some embodiments, the first opening 16 and the second opening 17 can be substantially square. Of course, it can be understood that in other embodiments, the first opening 16 and the second opening 17 can not be limited to a square shape, and in other embodiments, the first opening 16 and the second opening 17 can be circular or other shapes.

[0040] In some embodiments, the first side wall 11 and the second side wall 12 are both longitudinally arranged, and the length of the first side wall 11 can be greater than the length of the second side wall 12. One end of the first side wall 11 can protrude out of the first opening 16, and the portion of the first side wall 11 protruding out of the first opening 16 can be matched with the first end cover 30. The other end of the first side wall 11 can protrude out of the second opening 17, and the portion of the first side wall 11 protruding out of the second opening 17 can be matched with the second end cover 40. The portion of the first side wall 11 protruding out of the first opening 16 and the second opening 17 is provided with a blocking wall 18 arranged on two opposite sides of the first side wall 11. The two blocking walls 18 arranged on the two opposite sides of the first side wall 11 are respectively connected with the third side wall 13 and the fourth side wall 14, and can be integrally formed with the third side wall 13 and the fourth side wall 14. The blocking wall 18 can be used for limiting the installation of the first end cover 30 and the second end cover 40.

[0041] As shown in Figure 2 and Figure 4 In some embodiments, the power board 20 is longitudinally arranged, at least partially arranged in the cavity 15, and can extend from the first opening 16 to the second opening 17. In some embodiments, the power board 20 is arranged parallel to the first side wall 11 and / or the second side wall 12, and two ends of the power board 20 protrude out of the first opening 16 and the second opening 17, respectively. The power board 20 can be limited and fixed by the first end cover 30 and the second end cover 40.

[0042] In some embodiments, the power board 20 can include a circuit board 21, and components 23 disposed on the circuit board 21. The circuit board 21 can be longitudinally disposed, and can be substantially rectangular. The components 23 can be a plurality of components 23, and the plurality of components 23 can be arranged along the length of the circuit board 21. In some embodiments, the power board 20 can have a terminal 22 at least at one end, and the terminal 22 can be partially disposed outside the cavity 15. Specifically, in the present embodiment, the terminal 22 can be two groups, one group of terminals 22 disposed at one end of the power board 20 and disposed through the first opening 16, and the other group of terminals 22 disposed at the other end of the power board 20 and disposed through the second opening 17. Specifically, the terminal 22 can include a first terminal 22a and a second terminal 22b, the first terminal 22a can be disposed through the first end cover 30, and the second terminal 22b can be disposed through the second end cover 40. The first terminal 22a can be used to connect with an external power source, and specifically, the first terminal 22a can be connected with the external power source through a first connecting wire, and the first connecting wire can be connected with the first terminal 22a through plug-in connection. The second terminal 22b can be used to connect with an electrical device, and specifically, the second terminal 22b can be connected with the electrical device through a second connecting wire, and the second connecting wire can be connected with the second terminal 22b through plug-in connection. In other embodiments, the first terminal 22a can be connected with the electrical device, and the second terminal 22b can be connected with the external power source.

[0043] By providing the power board 20 with the terminal 22, the appropriate connecting wire can be selected to connect with the terminal 22 according to the use scenario and the wire requirement to form electrical conduction, that is, the use range of the power supply structure can be increased, which is suitable for different users, reduces the volume and inventory, reduces the production cost, and improves the user experience.

[0044] In some embodiments, the power board 20 can be provided with a separation piece 24, which can be in the form of a sheet and can be vertically disposed on the power board 20. Specifically, in the present embodiment, the separation piece 24 is vertically disposed on the circuit board 21 and located between the components 23 and the terminal 22. Further, the separation piece 24 is one, which is disposed between the components 23 and the first terminal 22a. The separation piece 24 can be fitted into the first end cover 30, and can be used to isolate the components 23 on the power board 20 from the terminal 22. In some embodiments, the separation piece 24 can be an insulating piece, such as a silica gel piece or a plastic piece.

[0045] In some embodiments, the power board fixing assembly further comprises a waterproof sealing assembly 25 arranged on the power board 20, which can be attached to the first end cover 30, in particular, it can be interference fit with the first end cover 30. The waterproof sealing assembly 25 can prevent water vapor and dust from entering the cavity 15 and affecting the components 23 on the power board 20, and fix the power board 20 by cooperating with the first end cover 30. Further, in some embodiments, the waterproof sealing assembly 25 is arranged between the components 23 and the first terminal 22a, and is sleeved on the outer periphery of the first end cover 30 and can be attached to the inner wall of the shell 10, and in other embodiments, the waterproof sealing assembly 25 can be attached to the second end cover 40, such as the waterproof sealing assembly 25 can be multiple, multiple waterproof sealing assemblies 25 are arranged at intervals, one of the waterproof sealing assemblies 25 is interference fit with the first end cover 30 and the shell 10, and one of the waterproof sealing assemblies 25 is interference fit with the second end cover 40 and the shell 10. In some embodiments, the waterproof sealing assembly 25 can not only play a waterproof role, but also limit and fix the power board 20.

[0046] In some embodiments, the waterproof sealing assembly 25 can include a waterproof pad 251 and a waterproof sealing ring 252, wherein the waterproof pad 251 is arranged on the side of the power board 20 opposite to the isolation piece 24 and is arranged side by side with the isolation piece 24 in a direction perpendicular to the power board 20. The waterproof pad 251 is generally cuboid-shaped and is an elastic member, which can be pressed on the first side wall 11. The waterproof sealing ring 252 can be generally cuboid-shaped and has elasticity, which can be sleeved on the first end cover 30 and can be interference fit with the first end cover 30. When the power board 20 and the first end cover 30 are assembled, the isolation piece 24 and the waterproof pad 251 can be embedded in the first end cover 30 and interference fit with the first end cover 30, and the waterproof sealing ring 252 can be sleeved on the outer periphery of the first end cover 30 and interference fit with the first end cover 30 and the shell 10, thereby playing a role of waterproofing, sealing and fixing the power board 20.

[0047] As shown in Figure 2 and Figure 5 In some embodiments, the first end cover 30 can be a plastic member, and it can be understood that the first end cover 30 can not be limited to a plastic member, but can be a metal member. The first end cover 30 is partially embedded in the shell 10 from the first opening 16 and can cover the first opening 16, which can be sealingly connected with the inner wall of the shell 10, in particular, in some embodiments, the first end cover 30 is fixed and sealed with the shell 10 by interference fit. In other embodiments, the waterproof sealing assembly 25 can be omitted, and a first waterproof sealing member can be arranged on the first end cover 30, which is sleeved on the first end cover 30 and can be a waterproof sealing ring, the first waterproof sealing member can be interference fit with the first end cover 30 and the shell 10, thereby playing a role of waterproof sealing.

[0048] In some embodiments, the first end cover 30 can include a first embedding portion 31, a first limiting portion 32, and a first extending portion 34. The first embedding portion 31 is substantially square in cross section, and the cross sectional shape and size thereof are adapted to those of the first opening 16. The size of the first embedding portion 31 can be slightly smaller than that of the first opening 16. The first embedding portion 31 can be embeddedly installed in the housing 10 from the first opening 16, and is in interference fit with the housing 10. The inside of the first embedding portion 31 is hollow. The first limiting portion 32 is provided on the outer periphery of the first embedding portion 31, and can be a flange provided protruding from the first embedding portion 31, and can be used to limit the position of the first end cover 30 and the housing 10. When the first embedding portion 31 is embedded in the housing 10, the first limiting portion 32 can be in contact with the edge of the first opening 16, thereby limiting the position of the first end cover 30. In some embodiments, the first end cover 30 is provided with a first through hole 33, and specifically, the first through hole 33 is provided on the end wall of the first embedding portion 31 facing the second opening 17. The first through hole 33 can be two, and each first through hole 33 can pass through a wiring terminal 22, and specifically, the first wiring terminal 22a. The first through hole 33 can be substantially square. The two first through holes 33 can be spaced apart. In some embodiments, the first extending portion 34 is provided on the side of the first embedding portion 31 opposite to the second opening 17, and extends outwardly, and can be in abutment with the first side wall 11 and the blocking wall 18.

[0049] In some embodiments, the first embedding portion 31 has a third opening 310 provided facing the second opening 17. The inside of the first embedding portion 31 is provided with a partition 311, which can be used to separate the two first through holes 33. In some embodiments, the inside of the bottom wall of the first embedding portion 31 in abutment with the first side wall 11 is provided with a boss 312, which can serve to support the partition 311. In some embodiments, the first end cover 30 is provided with a first card insertion structure 313, which can be used to limit the insertion of the power board 20. In some embodiments, the first card insertion structure 313 can be a slot formed between the boss 312 and the partition 311. In some embodiments, the inner wall of the first embedding portion 31 is provided with a first guide rib 314, which can guide the insertion of the power board 20 into the first card insertion structure 313.

[0050] The power board 20 can be inserted into the first card insertion structure 313 along the first guide rib 314 from the third opening 310, and the first wiring terminal 22a passes through the first through hole 33, and the power board 20 can be assembled with the first end cover 30 to form an assembly, and then installed into the housing 10 from the first opening 16, until the first limiting portion 32 of the first end cover 30 is blocked by the edge of the first opening 16.

[0051] like Figure 2 and Figure 6 As shown, in some embodiments, the second end cap 40 can be a plastic part. Of course, it is understandable that in other embodiments, the second end cap 40 is not limited to a plastic part. The second end cap 40 can be partially embedded from the second opening 17 and cover the inner wall of the second opening 17 to be sealed. In some embodiments, the second end cap 40 can be fixed to the housing 10 through an interference fit to achieve a seal. In other embodiments, a first waterproof seal can be provided on the second end cap 40. The first waterproof seal can be sleeved on the second end cap 40 and can be a waterproof sealing ring. The first waterproof seal can be interference fit with the second end cap 40 and the housing 10 to achieve a waterproof seal.

[0052] By providing a first opening 16 and a second opening 17 at both ends of the shell 10, and by partially embedding the first end cover 30 into the first opening 16 to cover the first opening 16 and interference fit with the shell 10, and partially embedding the second end cover 40 into the second opening 17 to cover the second opening 17 and interference fit with the shell 10, the sealing performance of the cavity 15 can be improved, and local glue accumulation or glue leakage during glue pouring can be prevented. In addition, the power board 20 is fixed by the first end cover 30 and the second end cover 40 without screws, which simplifies the installation process, improves the installation efficiency and saves manufacturing costs.

[0053] In some embodiments, the second end cap 40 may include a second embedded portion 41, a second limiting portion 42, and a second extending portion 44. The second embedded portion 41 has a generally square cross-section, and its cross-sectional shape and dimensions match the cross-sectional shape and dimensions of the second opening 17. The dimensions of the second embedded portion 41 may be slightly smaller than the dimensions of the second opening 17. The second embedded portion 41 can be embedded and installed in the housing 10 through the second opening 17, with an interference fit therewith. The interior of the second embedded portion 41 is hollow. The second limiting portion 42 is disposed on the outer periphery of the second embedded portion 41 and may be a flange protruding from the second embedded portion 41, which serves to limit the position of the second end cap 40 relative to the housing 10. When the second embedded portion 41 is embedded in the housing 10, the second limiting portion 42 may contact the edge of the second opening 17, thereby defining the position of the second end cap 40. In some embodiments, the second end cap 40 is provided with a second through-hole 43. Specifically, the second through-hole 43 is disposed on the end wall of the second embedded portion 41 facing the first opening 16. There may be two second through holes 43, each of which allows a terminal 22 to pass through, specifically, the second terminal 22b to pass through. The second through holes 43 may be generally square in shape. The two second through holes 43 may be spaced apart. In some embodiments, a second extension 44 is disposed on a side of the second embedded portion 41 opposite the first opening 16 and extends outwardly to engage with the first sidewall 11 and the retaining wall 18.

[0054] In some embodiments, the second embedding portion 41 has a fourth opening 410 arranged towards the first opening 16. The inner side of the second embedding portion 41 is provided with a partition plate 411 which can be used to separate the two second through holes 43. The partition plate 411 can be two, and the two partition plates 411 are arranged at intervals. The inner side of the bottom wall of the second embedding portion 41 which is connected with the first side wall 11 is provided with a second guide rib 412, and the second guide rib 412 can be multiple, and the multiple second guide ribs 412 are arranged at intervals in the width direction of the second end cover 40. Among them, two second guide ribs 412 are respectively connected with two partition plates 411. In some embodiments, the second end cover 40 is provided with a second card structure 4111, which can be a notch opened at the position where the partition plate 411 is connected with the second guide rib 412. The second card structure 4111 can be used for limiting the insertion of the power board 20. In some embodiments, after the power board 20 is installed in the shell 10, the second embedding portion 41 of the second end cover 40 can be embedded from the second opening 17, and at the same time the power board 20 can be inserted and fixed along the second guide rib 412 and the second card structure 4111.

[0055] In some embodiments, the power supply structure further comprises an insulating piece 50 which can be in the form of a sheet and can be arranged between the power board 20 and the shell 10. Specifically, the insulating piece 50 can be wrapped around the outer periphery of the power board 20 and attached to the inner wall of the shell 10. In some embodiments, when the shell 10 is an insulating shell, the insulating piece 50 can be omitted.

[0056] In some embodiments, the power supply structure further comprises a grounding member 60 which can be installed on the first end cover 30, specifically, it can be installed on the first extension portion 34 of the first end cover 30 and can be inserted into the power board 20 in a direction perpendicular to the power board 20 to connect the power board 20 and the shell 10. The shell 10 is provided with a first through hole 111 which is opened on the first side wall 11. The power board 20 is provided with a second through hole 211 which is arranged corresponding to the first through hole 111, and the grounding member 60 can pass from the second through hole 211 to the first through hole 111. In some embodiments, the grounding member 60 can be a screw which not only can play a grounding role, but also can play a role in assisting the fixation of the power board 20 and the shell 10. In other embodiments, the grounding member 60 can not be limited to being installed on the first end cover 30, but can be installed on the second end cover 40.

[0057] It can be understood that the above embodiment only expresses the preferred embodiment of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of deformations and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model patent claim should belong to the scope of the utility model patent claim.

Claims

1. A power board fixing assembly, characterized in that: It comprises a housing (10), a first end cover (30) and a second end cover (40); A cavity (15) for accommodating the power board (20) is formed inside the housing (10), and the housing (10) includes a first opening (16) and a second opening (17) arranged opposite to each other along the length direction; the cavity (15) is arranged between the first opening (16) and the second opening (17) and is in communication with the first opening (16) and the second opening (17); The first end cover (30) is partially inserted from the first opening (16) to cover the first opening (16), and the second end cover (40) is partially inserted from the second opening (17) to cover the second opening (17); The first end cover (30) and / or the second end cover (40) cooperate with the power board (20) to fix the power board (20).

2. The power board fixing assembly according to claim 1, characterized in that: The first end cover (30) and / or the second end cover (40) are plug-in-coupled with the power board (20) to fix the power board (20); Alternatively, the first end cover (30) and the second end cover (40) abut against the power board (20), and the first end cover (30) and the second end cover (40) cooperate with each other to clamp and fix the power board (20).

3. The power board fixing assembly according to claim 1, characterized in that: The first end cover (30) is provided with a first card insertion structure (313) for inserting and limiting the power board (20); And / or, the second end cover (40) is provided with a second card insertion structure (4111) for inserting and limiting the power board (20).

4. The power board fixing assembly according to claim 3, characterized in that: The first card insertion structure (313) comprises a slot; The first end cover (30) includes a first embedded portion (31) embedded in the housing (10); the first embedded portion (31) has a third opening (310) and a partition (311) is provided on the inner side; a boss (312) is provided on the bottom wall of the first embedded portion (31), and the boss (312) supports the partition (311); the slot is formed between the partition (311) and the boss (312).

5. The power board fixing assembly according to claim 4, characterized in that: The inner wall of the first embedded portion (31) is provided with a first guide rib (314), and the first guide rib (314) is used to guide the power board (20) when it is inserted into the first card structure (313).

6. The power board fixing assembly according to claim 3, characterized in that: The second card insertion structure (4111) comprises a notch; The second end cover (40) includes a second embedded portion (41); the second embedded portion (41) has a fourth opening (410) and a partition (411) is provided on the inner side; a second guide rib (412) for guiding the insertion of the power board (20) is provided on the bottom wall of the second embedded portion (41); the second guide rib (412) is connected to the partition (411); The notch is formed at the junction of the partition (411) and the second guide rib (412).

7. The power board fixing assembly according to claim 1, characterized in that: The power board fixing assembly further comprises a waterproof sealing assembly (25) provided on the power board (20), wherein the waterproof sealing assembly (25) is fitted with the first end cover (30) or the second end cover (40).

8. The power board fixing assembly according to claim 7, characterized in that: The waterproof sealing assembly (25) comprises a waterproof pad (251) and a waterproof sealing ring (252); the waterproof pad (251) is arranged on one side of the power board (20); the waterproof sealing ring (252) is sleeved on the first end cover (30) and is interference-fitted with the first end cover (30).

9. A power supply structure, characterized in that: Comprising a power board (20) and a power board fixing assembly according to any one of claims 1 to 8; The power board (20) is at least partially installed in the cavity (15) of the power board fixing assembly and extends from the first opening (16) of the power board fixing assembly to the second opening (17) of the power board fixing assembly. At least one end of the power board (20) has a terminal (22) and is at least partially located outside the cavity (15).

10. The power supply structure according to claim 9, characterized in that: The wiring terminals (22) include two groups, one group of the wiring terminals (22) is arranged at one end of the power supply board (20) and passes through the first opening (16), and the other group of the wiring terminals (22) is arranged at the other end of the power supply and passes through the second opening (17); The first end cover (30) of the power board fixing assembly is provided with a first through hole (33) for the connection terminal (22) to pass through; The second end cover (40) of the power board fixing assembly is provided with a second through hole (43) for the connection terminal (22) to pass through.

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