Circuit board fixing structure

Abstract

The utility model discloses a circuit board fixing structure, and belongs to the technical field of circuit board assembly. The fixing structure comprises a shell, a first buckle component, a top plate and a second buckle component, the shell comprises side plates and a bottom plate, the side plates define a containing cavity on the bottom plate, and the containing cavity is used for containing a circuit board; the first buckle component is arranged in the accommodating cavity and is connected with the side plate and the bottom plate respectively; the top plate is opposite to the bottom plate in the first direction; the second buckle component is connected with the top plate, and one end, far away from the top plate, of the second buckle component is clamped and matched with the first buckle component through deformation so as to limit and fix the circuit board and enable the shell to be connected with the top plate. According to the circuit board fixing structure, the second buckle component is matched with the first buckle component in a clamping mode to limit and fix the circuit board, and the circuit board fixing structure is convenient and fast to use.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of circuit board assembly, and particularly relates to a circuit board fixing structure. BACKGROUND

[0002] With the rapid development of various electronic products at present, circuit boards are widely used in various electronic products, and most of the circuit boards are fixed in the internal structure of electronic products through bolt connection limiting or hot riveting connection limiting. In this process, the process of fixing the circuit board in the internal limiting fixation of the electronic product is relatively cumbersome. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the application provides a circuit board fixing structure, which solves the technical problem that the process of fixing the circuit board in the internal limiting fixation of the electronic product is relatively cumbersome.

[0004] The embodiment provides a circuit board fixing structure, which comprises:

[0005] A shell, the shell comprises a side plate and a bottom plate, the side plate surrounds a containing cavity on the bottom plate, and the containing cavity is used for placing a circuit board;

[0006] A first clamping part, the first clamping part is arranged in the containing cavity and connected with the side plate and the bottom plate respectively;

[0007] A top plate, the top plate is opposite to the bottom plate in a first direction;

[0008] A second clamping part, the second clamping part is connected with the top plate, one end of the second clamping part away from the top plate is clamped and matched with the first clamping part through deformation, so that the circuit board is limited and fixed, and the shell is connected with the top plate.

[0009] In some embodiments, the first clamping part comprises a first connecting part and a first clamping head, the first connecting part is connected with the side plate and the bottom plate respectively and extends in the first direction, and the first clamping head is connected with one end of the first connecting part away from the bottom plate;

[0010] The second clamping part comprises a second connecting part and a second clamping head, the second connecting part is connected with the top plate and extends in the opposite direction of the first direction, and the second clamping head is connected with one end of the second connecting part away from the top plate;

[0011] The second clamping head is clamped and matched with the first clamping head based on the deformation of one end of the second connecting part away from the top plate.

[0012] In some embodiments, the first clamping head protrudes from the first connecting part and has a first limiting surface facing the bottom plate, the second clamping head protrudes from the second connecting part and has a second limiting surface facing the top plate, and the first limiting surface and the second limiting surface abut each other, so that the first clamping head and the second clamping head are clamped and matched.

[0013] In some embodiments, the fixing structure further comprises:

[0014] a supporting component, the supporting component comprising:

[0015] a connecting supporting part connected with the bottom plate and extending along the first direction;

[0016] an extending part connected with an end of the connecting supporting part away from the bottom plate;

[0017] the connecting supporting part protrudes from the extending part and has a third limiting surface facing the circuit board, the circuit board has a first hole hole penetrating along the first direction, the extending part passes through the first hole hole, and the third limiting surface is in abutment with a side of the circuit board close to the bottom plate, so that the circuit board is fixedly limited between the second buckle head and the third limiting surface.

[0018] In some embodiments, the fixing structure further comprises:

[0019] a positioning component, the positioning component comprising a positioning piece connected with the bottom plate and extending along the first direction;

[0020] the circuit board has a second hole hole penetrating along the first direction, and when the circuit board is fixedly limited between the second buckle head and the third limiting surface, the positioning piece passes through the second hole hole to limit the circuit board.

[0021] In some embodiments, the positioning component further comprises:

[0022] a first supporting piece connected with the positioning piece and the bottom plate respectively and extending along the first direction, the first supporting piece has a fourth limiting surface facing the circuit board, and the fourth limiting surface is in the same plane as the third limiting surface.

[0023] In some embodiments, the fixing structure further comprises:

[0024] a limiting component, the limiting component comprising:

[0025] a connecting piece connected with the bottom plate and the connecting supporting part respectively and extending along the first direction;

[0026] an extending piece connected with an end of the connecting piece away from the bottom plate, the extending piece has a guiding surface and a sixth limiting surface, and the sixth limiting surface faces the extending part and is connected with the guiding surface;

[0027] the connecting piece protrudes from the extending piece and has a fifth limiting surface facing the circuit board, the fifth limiting surface is in the same plane as the third limiting surface, and when the circuit board is fixedly limited between the second buckle head and the third limiting surface, the fifth limiting surface and the sixth limiting surface form a limiting step to abut and limit the circuit board.

[0028] In some embodiments, the fixing structure further comprises:

[0029] The second support member is connected with the bottom plate and extends along the first direction, and has a seventh limiting surface facing the circuit board, which is in the same plane as the third limiting surface.

[0030] In some embodiments, the fixing structure further comprises:

[0031] The limiting member is connected with the top plate and extends in the opposite direction of the first direction, and when the circuit board is limited and fixed between the second buckle head and the third limiting surface, the end of the limiting member away from the top plate abuts against the end of the extending portion away from the connecting support portion and protrudes from the extending portion.

[0032] In some embodiments, the side plate has a limiting groove facing the top plate in the second direction, and / or the side plate has a limiting groove facing the top plate in the third direction; the third direction intersects with the first direction and the second direction;

[0033] The fixing structure further comprises:

[0034] The limiting baffle is connected with the top plate, and when the top plate is connected with the side plate, the limiting groove and the limiting baffle are one-to-one matched and limited.

[0035] Beneficial effects: the application provides a circuit board fixing structure, which comprises a shell, a first buckle component, a top plate, and a second buckle component. The shell comprises a side plate and a bottom plate, the side plate surrounds a containing cavity on the bottom plate, and the containing cavity is used for placing a circuit board. The first buckle component is arranged in the containing cavity and connected with the side plate and the bottom plate respectively. The top plate is opposite to the bottom plate in the first direction. The second buckle component is connected with the top plate, and the end of the second buckle component away from the top plate is matched with the first buckle component through deformation to limit and fix the circuit board and connect the shell with the top plate. The second buckle component is matched with the first buckle component to limit and fix the circuit board, and a convenient and fast circuit board fixing structure is provided. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0037] Figure 1 A structural schematic diagram of a circuit fixing structure provided by the embodiments of the application;

[0038] Figure 2 A structural schematic diagram of a shell provided by the embodiments of the application;

[0039] Figure 3A structural schematic view of a circuit board provided by an embodiment of the present application in a containing cavity;

[0040] Figure 4 A structural schematic view of a top plate provided by an embodiment of the present application;

[0041] Figure 5 A structural schematic view of a top plate and a shell connected provided by an embodiment of the present application.

[0042] Mark number explanation:

[0043] 10-shell, 11-bottom plate, 12-side plate, 121-limiting slot, 13-containing cavity, 20-top plate, 21-limiting member, 22-limiting baffle, 30-first clamping component, 31-first connecting part, 32-first clamping head, 321-first limiting surface, 40-second clamping component, 41-second connecting part, 42-second clamping head, 421-second limiting surface, 50-circuit board, 51-first hole, 52-second hole, 60-supporting component, 61-connecting supporting part, 611-third limiting surface, 62-extended part, 70-positioning component, 71-positioning member, 72-first supporting member, 721-fourth limiting surface, 80-limiting component, 81-connecting member, 811-fifth limiting surface, 82-extended member, 821-sixth limiting surface, 822-guiding surface, 90-second supporting member, 91-seventh limiting surface, 100-stabilizing component, 101-first reinforcing member, 102-second reinforcing member. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person skilled in the art without any creative work are within the protection scope of the present application.

[0045] In the description of the present application, it should be understood that the specific implementation described herein is only for illustration and explanation of the present application, and is not intended to limit the present application. The orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features.

[0046] It should also be noted that in the drawings of the embodiments of the present application, the first direction Z is indicated by the marked arrow, the second direction X is indicated by the marked arrow, and the third direction Y is indicated by the marked arrow. The description of the present application introduces the first direction Z, the second direction X and the third direction Y in order to more clearly describe the structure and relative positional relationship of the components in the circuit board fixing structure. In actual application, the first direction Z, the second direction X and the third direction Y can point to any orientation in space. As an option, the first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0047] The present application provides a circuit board fixing structure, which is described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0048] As a prologue of the embodiments of the present application, the fixing method of the circuit board in the battery management system products on the current market is divided into two fixing methods of hot riveting and bolt connection. Through the bolt fixing method, the bolt fixing and torque inspection process is increased, which leads to the increase of standard working hours: a screw machine needs to be added, a torque detector needs to be added, labor needs to be added, and the cost of bolt materials needs to be added. In addition, the circuit board is easy to be damaged, the bolt torque is not easy to control, the torque is too large, which leads to local damage and deformation of the circuit board, the torque is too small, which leads to the falling of the bolt, and the bolt as a foreign matter is easy to cause damage to the internal electronic components. Through the hot riveting method, the hot riveting process needs to be added, which leads to the increase of standard working hours, a hot riveting machine needs to be added, labor needs to be added, and in addition, the circuit board is easy to be damaged, because the height of the hot riveting head exceeds the maximum bearing temperature of the electronic components during hot riveting, there is a risk of damage to the components.

[0049] Therefore, the application provides a circuit board fixing structure, which comprises a shell, a first buckle part, a top plate and a second buckle part. The second buckle part is matched with the first buckle part to limit and fix the circuit board, and the shell is connected with the top plate, so that a convenient and fast circuit board fixing structure is provided. Moreover, the application does not need hot riveting and bolt fixing processes, and only needs to press the circuit board during assembly on a production line, and then the second buckle part is matched with the first buckle part to limit and fix the circuit board, so that the assembly efficiency is greatly improved, and the equipment cost can be saved without adding a screw machine and a hot riveting machine.

[0050] Please refer to Figures 1 to 5 As shown in the drawings, the application provides a circuit board fixing structure, which comprises a shell 10, a first buckle part 30, a top plate 20 and a second buckle part 40. The shell 10 comprises a side plate 12 and a bottom plate 11. The side plate 12 surrounds a containing cavity 13 on the bottom plate 11, and the containing cavity 13 is used for placing a circuit board 50. The first buckle part 30 is arranged in the containing cavity 13 and connected with the side plate 12 and the bottom plate 11 respectively. The top plate 20 is opposite to the bottom plate 11 in a first direction Z. The second buckle part 40 is connected with the top plate 20. An end of the second buckle part 40 away from the top plate 20 is matched with the first buckle part 30 through deformation to limit and fix the circuit board 50, and the shell 10 is connected with the top plate 20.

[0051] It should be noted that the second buckle part 40 is connected with the top plate 20, and the end of the second buckle part 40 away from the top plate 20 can be deformed based on the elastic deformation material of the second buckle part 40 itself, that is, when in contact with the first buckle part 30, the end of the second buckle part 40 away from the top plate 20 first moves away from the second buckle part 40, and after moving to the corresponding clamping position, the end of the second buckle part 40 away from the top plate 20 rebounds and clamps with the first buckle part 30, achieving the purpose of connecting the shell 10 with the top plate 20; in addition, the circuit board 50 is placed in the accommodating cavity 13, and after the end of the second buckle part 40 away from the top plate 20 is clamped with the first buckle part 30 through deformation, the end of the second buckle part 40 away from the top plate 20 abuts against the circuit board 50, playing a limiting role in the first direction Z to limit and fix the circuit board 50; the second buckle part and the first buckle part are clamped and matched in the application to limit and fix the circuit board, and the shell is connected with the top plate, providing a convenient and fast circuit board fixing structure. The technical problem that the process of fixing and limiting the circuit board 50 in the electronic product is relatively complicated is solved. This structure not only simplifies the fixing and limiting process, but also effectively limits the circuit board 50, improving the stability and reliability of the electronic product. In addition, it should be noted that the relative position and relative direction of the structures of the components described in the application refer to the relative position and relative direction in the state that the bottom plate 11 and the top plate 20 and the circuit board 50 are connected. The number of the second buckle part 40 and the first buckle part 30 can be multiple and one-to-one, and can be adjusted according to the actual situation.

[0052] Please refer to Figure 2 and Figure 4 In some embodiments, the first buckle part 30 includes a first connecting part 31 and a first buckle head 32, the first connecting part 31 is connected with the side plate 12 and the bottom plate 11 respectively and extends along the first direction Z, and the first buckle head 32 is connected with the end of the first connecting part 31 away from the bottom plate 11; the second buckle part 40 includes a second connecting part 41 and a second buckle head 42, the second connecting part 41 is connected with the top plate 20 and extends along the opposite direction of the first direction Z, and the second buckle head 42 is connected with the end of the second connecting part 41 away from the top plate 20; the second buckle head 42 is clamped and matched with the first buckle head 32 based on the deformation of the end of the second connecting part 41 away from the top plate 20.

[0053] It should be noted that the first connecting part 31 is connected with the side plate 12 and the bottom plate 11 respectively and extends along the first direction Z, so that the first buckle part 30 has a stable limiting position, thereby facilitating the elastic movement of the second buckle part 40 relative to the first buckle part 30, achieving clamping and matching to limit and fix the circuit board 50.

[0054] Please refer to Figure 2 and Figure 4As shown, in some embodiments, the first snap head 32 protrudes from the first connecting portion 31 and has a first limiting surface 321 facing the bottom plate 11, and the second snap head 42 protrudes from the second connecting portion 41 and has a second limiting surface 421 facing the top plate 20. The first limiting surface 321 abuts against the second limiting surface 421 so that the first snap head 32 and the second snap head 42 engage.

[0055] It should be noted that the first limiting surface 321 and the second limiting surface 421 abut against each other, so that the first latch head 32 and the second latch head 42 are stably engaged, ensuring a tight fit between the latch heads, which can effectively prevent the circuit board from loosening or shifting under vibration, impact or other external forces.

[0056] Please see Figure 2 and Figure 3 As shown, in some embodiments, the fixing structure further includes a support member 60, which includes a connecting support portion 61 connected to the base plate 11 and extending along a first direction Z; an extension portion 62 connected to the end of the connecting support portion 61 away from the base plate 11; the connecting support portion 61 protrudes from the extension portion 62 and has a third limiting surface 611 facing the circuit board 50; the circuit board 50 has a first hole 51 penetrating along the first direction Z; the extension portion 62 passes through the first hole 51 and abuts the third limiting surface 611 against the side of the circuit board 50 near the base plate 11, so that the circuit board 50 is limited and fixed between the second buckle head 42 and the third limiting surface 611.

[0057] It should be noted that, firstly, the extension 62 is passed through the first hole 51, and the third limiting surface 611 abuts against the side of the circuit board 50 near the base plate 11, so that the circuit board 50 is fixed in the receiving cavity 13. Then, the second latch head 42 engages with the first latch head 32 to limit and fix the circuit board 50 between the second latch head 42 and the third limiting surface 611. The connecting support part 61 provides the third limiting surface 611 to abut against the side of the circuit board 50 near the base plate 11, which plays a limiting role in the opposite direction of the first direction Z. On the other hand, it effectively limits the distance between the circuit board 50 and the base plate 11, so that the circuit board 50 has suitable space. In addition, there can be multiple support parts 60, and the layout can be adjusted according to the actual situation.

[0058] Please see Figure 2 and Figure 3 As shown, in some embodiments, the fixing structure further includes: a positioning component 70, which includes a positioning member 71 connected to the base plate 11 and extending along the first direction Z; the circuit board 50 has a second hole 52 extending along the first direction Z, and when the circuit board 50 is fixed between the second buckle head 42 and the third limiting surface 611, the positioning member 71 passes through the second hole 52 to limit the circuit board 50.

[0059] It should be noted that the extension part 62 passes through the first hole 51, and the positioning part 71 passes through the second hole 52 to limit the circuit board 50, prevent the circuit board 50 from shaking or loosening, so that the position of the circuit board 50 in the fixing structure is more stable, which is beneficial to limiting the circuit board 50 in the second direction X and the third direction Y; in addition, the number of the positioning part 70 can be multiple, which can be adjusted according to the actual situation.

[0060] Please refer to Figure 2 As shown in the figure, in some embodiments, the positioning part 70 further comprises: a first support 72, the first support 72 is connected with the positioning part 71 and the bottom plate 11 respectively and extends along the first direction Z, the first support 72 has a fourth limiting surface 721 facing the circuit board 50, and the fourth limiting surface 721 is in the same plane as the third limiting surface 611.

[0061] It should be noted that the number of the first support 72 can be multiple, and the multiple first supports 72 are arranged around the positioning part 71; the first support 72 is provided to provide more support points, so that the circuit board 50 can obtain more uniform support force during the fixing process. In this way, the circuit board 50 is more stable in the fixing and limiting, and is not easy to shake or loosen, thereby effectively improving the reliability and stability of the electronic product. And the circuit board 50 can obtain balanced support force in each direction, avoiding the situation of insufficient or uneven local support. At the same time, the surrounding arrangement of the first support 72 can also increase the rigidity of the structure, further improving the stability of the circuit board. In addition, the fourth limiting surface 721 is in the same plane as the third limiting surface 611, so that the circuit board limiting and fixing is more stable.

[0062] Please refer to Figure 2 As shown in the figure, in some embodiments, the fixing structure further comprises: a limiting part 80, the limiting part 80 comprises: a connecting part 81, the connecting part 81 is connected with the bottom plate 11 and the connecting support part 61 respectively and extends along the first direction Z; an extension part 82, the extension part 82 is connected with one end of the connecting part 81 away from the bottom plate 11, the extension part 82 has a guide surface 822 and a sixth limiting surface 821, the sixth limiting surface 821 faces the extension part 62 and is connected with the guide surface 822; the connecting part 81 protrudes from the extension part 82 and has a fifth limiting surface 811 facing the circuit board 50, the fifth limiting surface 811 is in the same plane as the third limiting surface 611, when the circuit board 50 is limited and fixed between the second buckle head 42 and the third limiting surface 611, the fifth limiting surface 811 and the sixth limiting surface 821 form a limiting step to abut and limit the circuit board 50.

[0063] It should be noted that the guide surface 822 plays a guiding role for the circuit board 50, guiding the circuit board 50 to move towards the limiting step; after the extension part 62 passes through the first hole 51, the fifth limiting surface 811 and the sixth limiting surface 821 form the limiting step to abut and limit the circuit board 50, so that the circuit board 50 is limited in the limiting step; in some embodiments, the connecting support part 61 is connected to the limiting part 80 in the second direction X and the third direction Y to limit the circuit board 50 in the second direction X and the third direction Y; for example, the extension part 62 passes through the circuit board 50 at the edge of the circuit board 50, and the circuit board 50 abuts against the sixth limiting surface 821, thereby limiting the position of the circuit board 50 on the bottom plate 11.

[0064] Please refer to Figure 2 In some embodiments, the fixing structure further comprises a second support 90, the second support 90 is connected with the bottom plate 11 and extends in the first direction Z, and the second support 90 has a seventh limiting surface 91 facing the circuit board 50, and the seventh limiting surface 91 is in the same plane as the third limiting surface 611. It should be noted that the seventh limiting surface 91 is in the same plane as the third limiting surface 611, and the number of the second support 90 can be multiple, which can be adjusted according to the actual situation to provide more support points for the circuit board 50, so that the circuit board 50 can obtain more uniform support force during the fixing process.

[0065] In some embodiments, the support part 60 is arranged near the side plate 12, the limiting part 80 is connected with the side plate 12, which can effectively limit the position of the circuit board 50, and can also strengthen the strength of the support part 60 and the strength of the side plate 12; the second support 90 is connected with the side plate 12 and arranged near the first buckle part 30, which plays a limiting role in the opposite direction of the first direction Z; the positioning part 70 is arranged near the middle of the bottom plate 11 to provide more support points for the circuit board 50, so that the circuit board can obtain more uniform support force during the fixing process.

[0066] Please refer to Figure 4 and Figure 5 In some embodiments, the fixing structure further comprises a limiting part 21 connected with the top plate 20 and extending in the opposite direction of the first direction Z; when the circuit board 50 is limited and fixed between the second buckle head 42 and the third limiting surface 611, the end of the limiting part 21 away from the top plate 20 abuts against and protrudes from the end of the extension part 62 away from the connecting support part 61.

[0067] It should be noted that when the circuit board 50 is limited and fixed between the second buckle head 42 and the third limiting surface 611, the extension part 62 passes through the circuit board 50, and the circuit board 50 is in abutment with the one end of the limiting piece 21 away from the top plate 20 and the third limiting surface 611 respectively, so as to limit and fix the circuit board 50. On the one hand, the distance between the circuit board 50 and the top plate 20 is effectively limited, and on the other hand, the problem of damage caused by excessive shaking of the circuit board 50 is prevented. In addition, the limiting piece 21 corresponds to the extension part 62 one by one.

[0068] As shown in Figure 2 and Figure 4 In some embodiments, the side plate 12 has a limiting groove 121 facing the top plate 20 in the second direction X, and / or the side plate 12 has a limiting groove 121 facing the top plate 20 in the third direction Y; the third direction Y intersects with the first direction Z and the second direction X; the fixing structure further comprises a limiting baffle 22 connected with the top plate 20, and when the top plate 20 is connected with the side plate 12, the limiting groove 121 and the limiting baffle 22 correspond to each other and are engaged to limit.

[0069] It should be noted that the limiting groove 121 and the limiting baffle 22 are engaged to limit the relative position of the top plate 20 and the side plate 12 in the second direction X and the third direction Y when the top plate 20 is connected with the side plate 12, so that the alignment between the top plate 20 and the side plate 12 is ensured, and displacement or shaking of them is prevented, further improving the stability of the product.

[0070] As shown in Figure 2 and Figure 4 In some embodiments, the fixing structure further comprises a stabilizing component 100, and the stabilizing component 100 comprises a first reinforcing piece 101 connected with the top plate 20, and when the bottom plate 11 is connected with the side plate 12, the first reinforcing piece 101 is in abutment with the side plate 12 facing the accommodating cavity 13.

[0071] It should be noted that the first reinforcing piece 101 is an outer contour boss of the top plate 20, the first reinforcing piece 101 is in abutment with the side plate 12 facing the accommodating cavity 13, and the first reinforcing piece 101 plays a role in preventing the top plate 20 from being bent and deformed, and also can be used as a baffle in abutment with the side plate 12 facing the accommodating cavity 13 to play a protection role.

[0072] In some embodiments, the stabilizing component 100 further comprises a plurality of second reinforcing pieces 102 connected with the top plate 20 facing the bottom plate 11, and the plurality of second reinforcing pieces 102 are intersected on the top plate 20, and / or the plurality of second reinforcing pieces 102 are connected with the bottom plate 11 facing the top plate 20, and the plurality of second reinforcing pieces 102 are intersected on the bottom plate 11.

[0073] It should be noted that the second reinforcing member 102 is arranged on the top plate 20 and the bottom plate 11 to enhance the rigidity and stability of the structure of the top plate 20 and the bottom plate 11 to resist external forces and reduce deformation of the structure; a plurality of second reinforcing members 102 are arranged on the top plate 20 and the bottom plate 11, and these reinforcing members intersect with each other to form a firm support network, so that the top plate 20 and the bottom plate 11 can uniformly disperse stress when subjected to external forces and prevent local damage or instability.

[0074] In some embodiments, the connection process of the housing 10, the top plate 20 and the circuit board 50 in the present application is as follows:

[0075] First, the first hole 51 and the second hole 52 of the circuit board 50 are respectively aligned with the extension 62 and the positioning member 71, the circuit board 50 is pressed, and after the circuit board 50 abuts against the first buckle head 32, the side of the circuit board 50 facing the bottom plate 11 abuts against the third limiting surface 611, so that the circuit board 50 is limited between the third limiting surface 611 and the first limiting surface 321; then, the limiting groove 121 is engaged with the limiting block 22, the top plate 20 is pressed, the first buckle member 30 and the second buckle member 40 are engaged, the first limiting surface 321 and the second limiting surface 421 abut against each other, and the end of the second buckle head 42 away from the second connecting part 41 abuts against the side of the circuit board 50 away from the bottom plate 11 to limit and fix the circuit board 50, thereby achieving the connection of the housing 10, the top plate 20 and the circuit board 50. The present application fixes and limits the circuit board through interference fit to prevent the circuit board from shaking. The present application optimizes the assembly and connection steps of the product, reduces the use of metal bushings and bolts, effectively reduces the product cost, limits the circuit board 50 in the housing, reduces the use of screws, metal bushings and hot riveting machines, reduces the product weight, and does not need to set up other fixing equipment in the production line, thereby reducing the product cost, speeding up the work rhythm and improving the production efficiency.

[0076] Correspondingly, in some embodiments, a circuit fixing structure can be applied to a battery management system and other electronic products.

[0077] The circuit board fixing structure provided in the present application is described in detail above, and specific examples are applied in the present application to describe the principles and implementation modes of the present application. The above description of the embodiments is only used to help understand the method and core idea of the present application; meanwhile, for those skilled in the art, the specific implementation mode and application range can be changed according to the idea of the present application. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A circuit board fixing structure characterized by comprising: Comprising: a housing comprising side plates and a bottom plate, the side plates enclosing a receiving cavity on the bottom plate, the receiving cavity for placing a circuit board; a first clamping component provided in the receiving cavity and connected with the side plates and the bottom plate respectively; a top plate opposite to the bottom plate in a first direction; a second clamping component connected with the top plate, an end of the second clamping component away from the top plate being clamped with the first clamping component through deformation, so as to limit and fix the circuit board and connect the housing with the top plate.

2. The circuit board fixing structure according to claim 1, wherein: the first clamping component comprises a first connecting part and a first clamping head, the first connecting part being connected with the side plates and the bottom plate respectively and extending in the first direction, and the first clamping head being connected with an end of the first connecting part away from the bottom plate; the second clamping component comprises a second connecting part and a second clamping head, the second connecting part being connected with the top plate and extending in the opposite direction of the first direction, and the second clamping head being connected with an end of the second connecting part away from the top plate; the second clamping head is clamped with the first clamping head based on the deformation of the end of the second connecting part away from the top plate.

3. The circuit board fixing structure according to claim 2, wherein: the first clamping head protrudes from the first connecting part and has a first limiting surface facing the bottom plate, the second clamping head protrudes from the second connecting part and has a second limiting surface facing the top plate, and the first limiting surface and the second limiting surface abut each other, so that the first clamping head and the second clamping head are clamped.

4. The circuit board fixing structure according to claim 3, characterized by Further comprising: a supporting component comprising: a connecting supporting part connected with the bottom plate and extending in the first direction; an extending part connected with an end of the connecting supporting part away from the bottom plate; the connecting supporting part protrudes from the extending part and has a third limiting surface facing the circuit board, the circuit board has a first hole hole through in the first direction, the extending part passes through the first hole hole, and the third limiting surface abuts a side of the circuit board close to the bottom plate, so that the circuit board is limited and fixed between the second clamping head and the third limiting surface.

5. The circuit board fixing structure according to claim 4, characterized by Further comprising: a positioning component comprising a positioning piece connected with the bottom plate and extending in the first direction; the circuit board has a second hole hole through in the first direction, and when the circuit board is limited and fixed between the second clamping head and the third limiting surface, the positioning piece passes through the second hole hole to limit the circuit board.

6. The circuit board fixing structure according to claim 5, wherein: the positioning component further comprises: a first supporting piece connected with the positioning piece and the bottom plate respectively and extending in the first direction, the first supporting piece having a fourth limiting surface facing the circuit board, and the fourth limiting surface being in the same plane as the third limiting surface.

7. The circuit board fixing structure according to claim 4, characterized by Further comprising: a limiting component comprising: A connecting piece is connected with the bottom plate and the connecting support part and extends in a first direction; An extension piece is connected with one end of the connecting piece away from the bottom plate, the extension piece has a guide surface and a sixth limiting surface, and the sixth limiting surface is toward the extension part and connected with the guide surface; The connecting piece protrudes from the extension piece and has a fifth limiting surface toward the circuit board, the fifth limiting surface is in the same plane as the third limiting surface, and when the circuit board is limited and fixed between the second buckle head and the third limiting surface, the fifth limiting surface and the sixth limiting surface form a limiting step to abut and limit the circuit board.

8. The circuit board fixing structure according to claim 4, characterized by Further comprising: A second support part is connected with the bottom plate and extends in the first direction, the second support part has a seventh limiting surface toward the circuit board, and the seventh limiting surface is in the same plane as the third limiting surface.

9. The circuit board fixing structure according to claim 4, characterized by Further comprising: A limiting piece is connected with the top plate and extends in the opposite direction of the first direction, and when the circuit board is limited and fixed between the second buckle head and the third limiting surface, one end of the limiting piece away from the top plate abuts with one end of the extension part away from the connecting support part and protrudes from the extension part.

10. The circuit board fixing structure according to claim 1, wherein The side plate has a limiting groove toward the top plate in a second direction, and / or the side plate has a limiting groove toward the top plate in a third direction; The third direction intersects with the first direction and the second direction; The fixing structure further comprises: A limiting baffle is connected with the top plate, and when the top plate is connected with the side plate, the limiting groove and the limiting baffle one-to-one correspond to each other and are engaged and limited.

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