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 bottom plate and a fixing part arranged on the bottom plate, the fixing part is used for fixing the circuit board and comprises a connecting piece and a fixing piece, the connecting piece is connected with the bottom plate and extends in the first direction, and the connecting piece is provided with a through hole penetrating in the first direction; the fixing piece penetrates through the through hole and is connected with the connecting piece; the circuit board is provided with a first hole penetrating in the first direction, and the fixing piece penetrates through the first hole and the through hole to abut against the connecting piece so as to limit and fix the circuit board. According to the circuit board fixing structure, the fixing part is matched with the through hole in the connecting piece, the circuit board is fixed in the containing cavity, the technical problem that the limiting and fixing process of the circuit board in an electronic product is tedious is solved, and the convenient circuit board fixing structure is provided.

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 the electronic products through bolt connection limiting or hot riveting connection limiting. In this process, the limiting and fixing of the circuit board 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 limiting and fixing process of the circuit board in the electronic product is relatively cumbersome.

[0004] The application embodiment provides a circuit board fixing structure, and the fixing structure comprises:

[0005] a bottom plate and a fixing component arranged on the bottom plate, the fixing component being used for fixing a circuit board, and the fixing component comprising:

[0006] a connecting piece connected with the bottom plate and extending along a first direction, the connecting piece having a through hole penetrating along the first direction;

[0007] a fixing piece connected with the connecting piece through the through hole;

[0008] the circuit board having a first hole penetrating along the first direction, and the fixing piece abutting against the connecting piece through the first hole and the through hole, so as to limit and fix the circuit board.

[0009] In some embodiments, the fixing piece comprises:

[0010] a first limiting part,

[0011] an elastic part connected with the first limiting part, the elastic part having a slot penetrating along the first direction, the first limiting part protruding from the elastic part and having a first limiting surface facing the bottom plate;

[0012] a second limiting part connected with one end of the elastic part away from the first limiting part, the second limiting part having a gap in communication with the slot, the second limiting part abutting against one surface of the bottom plate away from the circuit board through the gap in deformation, and the first limiting surface abutting against one surface of the circuit board away from the bottom plate.

[0013] In some embodiments, the elastic part comprises a plurality of elastic pieces arranged at intervals, and the slot is formed between the plurality of elastic pieces.

[0014] The second limiting part includes a plurality of limiting members, gaps are formed between the plurality of limiting members, the limiting members are connected one by one with the elastic members, the limiting members protrude from the elastic members and have second limiting surfaces facing the bottom plate, and when the second limiting part passes through the through hole, the second limiting surfaces abut against the side of the bottom plate facing away from the circuit board.

[0015] In some embodiments, the connecting member includes:

[0016] The support part is connected with the bottom plate and extends in the first direction;

[0017] The extension part is connected with the end of the support part away from the bottom plate;

[0018] The support part protrudes from the extension part and has a third limiting surface facing the first limiting surface, the extension part passes through the first hole, the third limiting surface abuts against the side of the circuit board facing away from the bottom plate, so that the circuit board is fixed and limited between the first limiting surface and the third limiting surface.

[0019] In some embodiments, the fixing structure further includes:

[0020] The positioning component includes positioning members, the positioning members are connected with the bottom plate and extend in the first direction;

[0021] The circuit board has a second hole passing through in the first direction, and when the circuit board is fixed and limited between the first limiting surface and the third limiting surface, the positioning members pass through the second hole to limit the circuit board.

[0022] In some embodiments, the positioning component further includes:

[0023] The first support members are respectively connected with the positioning members and the bottom plate and extend in the first direction, the first support members have fourth limiting surfaces facing the circuit board, and the fourth limiting surfaces are in the same plane as the third limiting surface.

[0024] In some embodiments, the fixing structure further includes:

[0025] The limiting component includes:

[0026] The third limiting part is respectively connected with the bottom plate and the support part and extends in the first direction;

[0027] The fourth limiting part is connected with the end of the third limiting part away from the bottom plate, the fourth limiting part has a guide surface and a sixth limiting surface, the sixth limiting surface faces the extension part and is connected with the guide surface;

[0028] The third limiting part protrudes from the fourth limiting part 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 fixed and limited between the first limiting surface and the third limiting surface, the fifth limiting surface and the sixth limiting surface form a limiting step to abut against and limit the circuit board.

[0029] In some embodiments, the fixing structure further comprises:

[0030] a second support connected to the bottom plate and extending along the first direction, the second support having a seventh limiting surface facing the circuit board, the seventh limiting surface being in the same plane as the third limiting surface.

[0031] In some embodiments, the fixing structure further comprises:

[0032] a top plate opposite to the bottom plate along the first direction;

[0033] a side plate connected to the bottom plate and extending along the first direction, the side plate surrounding a receiving cavity on the bottom plate, the receiving cavity being used for placing the circuit board;

[0034] a buckle connected to the top plate;

[0035] a buckle protrusion provided on a side of the side plate away from the receiving cavity, the buckle being engaged with the buckle protrusion to connect the top plate and the side plate.

[0036] In some embodiments, the fixing structure further comprises:

[0037] a fifth limiting part connected to the top plate and extending along the opposite direction of the first direction, when the top plate is connected to the side plate, an end of the fifth limiting part away from the top plate abutting against the fixing part.

[0038] Beneficial effects: the application provides a circuit board fixing structure, the fixing structure comprising: a bottom plate and a fixing part provided on the bottom plate, the fixing part being used for fixing a circuit board, the fixing part comprising: a connecting part connected to the bottom plate and extending along a first direction, the connecting part having a through hole penetrating along the first direction; a fixing part connected to the connecting part through the through hole; the circuit board having a first hole penetrating along the first direction, the fixing part penetrating through the first hole, the through hole and the connecting part to abut against the circuit board to limit and fix the circuit board. The application fixes the circuit board in the receiving cavity through the fixing part and the through hole on the connecting part, solves the technical problem that the process of limiting and fixing the circuit board in the electronic product is relatively complicated, and provides a convenient circuit board fixing structure. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. 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 any creative effort based on these drawings.

[0040] Figure 1 a structural schematic diagram of a circuit board fixing structure provided by the embodiments of the application;

[0041] Figure 2 A structural schematic diagram of a circuit board provided by an embodiment of the present application in a containing cavity is shown in FIG. 1.

[0042] Figure 3 A structural schematic diagram of a bottom plate provided by an embodiment of the present application is shown in FIG. 2.

[0043] Figure 4 A structural schematic diagram of a fixing member provided by an embodiment of the present application is shown in FIG. 3.

[0044] Figure 5 A structural schematic diagram of a top plate provided by an embodiment of the present application is shown in FIG. 4.

[0045] Explanation of reference signs:

[0046] 10-bottom plate, 20-fixing member, 21-connecting member, 211-through hole, 212-supporting part, 213-extended part, 2121-third limiting surface, 22-fixing member, 221-first limiting part, 2211-first limiting surface, 222-elastic part, 2221-notch, 2222-elastic member, 223-second limiting part, 2231-limiting member, 2232-gap, 2233-second limiting surface, 30-circuit board, 31-first hole, 32-second hole, 40-positioning member, 41-positioning member, 42-first supporting member, 421-fourth limiting surface, 50-limiting member, 51-third limiting part, 511-fifth limiting surface, 52-fourth limiting part, 521-guiding surface, 522-sixth limiting surface, 60-second supporting member, 61-seventh limiting surface, 70-top plate, 71-buckle, 72-fifth limiting part, 73-limiting bar, 80-side plate, 81-buckle protrusion, 82-containing cavity, 83-limiting slot, 90-stabilizing member, 91-first reinforcing member, 92-second reinforcing member. DETAILED DESCRIPTION

[0047] 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 other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] 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 is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular 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.

[0049] It should also be noted that in the drawings of the embodiments of the present application, the first direction Z is indicated by the arrow, the second direction Y is indicated by the arrow, and the third direction X is indicated by the arrow. The description of the present application introduces the first direction Z, the second direction Y and the third direction X 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 Y and the third direction X can point to any direction in space. As an option, the first direction Z, the second direction Y and the third direction X are perpendicular to each other.

[0050] 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. As a prologue of the embodiments of the present application, the fixing methods of the circuit board in the battery management system products on the current market are 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.

[0051] In view of this, the application provides a circuit board fixing structure, which comprises a bottom plate and a fixing component arranged on the bottom plate, the fixing component being used for fixing a circuit board, and the fixing component comprises a connecting piece and a fixing piece. The fixing component and the through hole on the connecting piece are matched to fix the circuit board in the accommodating cavity, so that the technical problem that the fixing process of the circuit board in an electronic product is relatively complicated is solved, and a convenient circuit board fixing structure is provided. Moreover, the application does not need a hot riveting and bolt fixing process, and only needs to press the circuit board during assembly on a production line, so that the circuit board can be fixed in position by using the buckle component designed in the shell itself, so that the assembly efficiency is greatly improved. Moreover, the design does not need to add a screw machine and a hot riveting machine, so that the equipment cost can be saved.

[0052] As shown in Figure 1 and Figure 2 The application provides a circuit board fixing structure, which comprises a bottom plate 10 and a fixing component 20 arranged on the bottom plate 10, the fixing component 20 being used for fixing a circuit board 30, and the fixing component 20 comprising a connecting piece 21, a fixing piece 22 and the circuit board 30. The connecting piece 21 is connected with the bottom plate 10 and extends along a first direction Z, and the connecting piece 21 has a through hole 211 penetrating along the first direction Z. The fixing piece 22 abuts against the connecting piece 21 by penetrating through the through hole 211. The circuit board 30 has a first hole 31 penetrating along the first direction Z, and the fixing piece 22 abuts against the connecting piece 21 by penetrating through the first hole 31 and the through hole 211, so as to fix the circuit board 30 in position.

[0053] It should be noted that when the circuit board 30 is on the bottom plate 10, the first hole 31 and the through hole 211 are located in a corresponding position, the fixing piece 22 abuts against the connecting piece 21 by penetrating through the first hole 31 and the through hole 211, so as to fix the circuit board 30 in position. The through hole 211 penetrates through the connecting piece 21 and the bottom plate 10 connected with the connecting piece 21, and the number of the fixing components 20 can be multiple, which can be adjusted according to actual conditions. The fixing component and the through hole on the connecting piece are matched to fix the circuit board in the accommodating cavity, so that the technical problem that the fixing process of the circuit board in an electronic product is relatively complicated is solved, and a convenient circuit board fixing structure is provided. This structure not only simplifies the fixing process, but also effectively fixes the circuit board 30, so that the stability and reliability of the electronic product are improved. In addition, it should be noted that the relative position and the relative direction of the structures of the components described in the application refer to the relative position and the relative direction in the state that the bottom plate 10, the top plate 70 and the circuit board 30 are connected.

[0054] As shown in Figure 1 and Figure 4As shown, in some embodiments, the fastener 22 includes: a first limiting part 221, an elastic part 222 connected to the first limiting part 221, the elastic part 222 having a slot 2221 extending through in a first direction Z, the first limiting part 221 protruding from the elastic part 222 and having a first limiting surface 2211 facing the base plate 10; a second limiting part 223 connected to one end of the elastic part 222 away from the first limiting part 221, the second limiting part 223 having a gap 2232 communicating with the slot 2221, the second limiting part 223 deforming through the gap 2232, and under deformation passing through the through hole 211 and abutting against the side of the base plate 10 away from the circuit board 30, the first limiting surface 2211 abutting against the side of the circuit board 30 away from the base plate 10.

[0055] It should be noted that the elastic part 222 and the second limiting part 223 provide sufficient deformation space based on the slot 2221 and the gap 2232, so that the second limiting part 223 abuts against the side of the base plate 10 away from the circuit board 30 by passing through the through hole 211 under deformation, while the first limiting surface 2211 abuts against the side of the circuit board 30 away from the base plate 10, thereby limiting and fixing the circuit board 30 between the first limiting surface 2211 and the connector 21. The first limiting surface 2211 plays a limiting role on the circuit board in the first direction Z.

[0056] Please see Figure 1 and Figure 4 As shown, in some embodiments, the elastic part 222 includes a plurality of spaced elastic elements 2222, and a slot 2221 is formed between the plurality of elastic elements 2222; the second limiting part 223 includes a plurality of limiting elements 2231, and a gap 2232 is formed between the plurality of limiting elements 2231. The limiting elements 2231 are connected to the elastic elements 2222 one by one. The limiting elements 2231 protrude from the elastic elements 2222 and have a second limiting surface 2233 facing the base plate 10. When the second limiting part 223 passes through the through hole 211, the second limiting surface 2233 abuts against the side of the base plate 10 facing away from the circuit board 30.

[0057] It should be noted that during the process of the second limiting part 223 passing through the through hole 211, the plurality of limiting members 2231 are subjected to the extrusion force inside the through hole 211, so that the plurality of limiting members 2231 drive the corresponding plurality of elastic members 2222 to shrink inwardly based on the deformation space of the notch 2221 and the gap 2232, and after the second limiting part 223 passes through the through hole 211, the plurality of limiting members 2231 are not subjected to external force, so as to rebound, so that the second limiting surface 2233 abuts against the side of the bottom plate 10 away from the circuit board 30, achieving the purpose of abutting the fixing member 22 and the connecting member 21, so that the first limiting surface 2211 can provide more reliable fixing effect for limiting the circuit board 30 in the first direction Z, preventing the circuit board 30 from loosening or shifting under the action of vibration, impact or other external force; in addition, the design based on deformation also has the advantage of disassembly, so that the disassembly and replacement of the circuit board becomes more convenient, thereby realizing the disassembly or replacement of the circuit board.

[0058] Please refer to Figure 2 , Figure 3 and Figure 4 , in some embodiments, the connecting member 21 comprises: a support part 212 connected with the bottom plate 10 and extending in the first direction Z; an extension part 213 connected with one end of the support part 212 away from the bottom plate 10; the support part 212 protrudes from the extension part 213 and has a third limiting surface 2121 facing the first limiting surface 2211, the extension part 213 passes through the first hole 31, and the third limiting surface 2121 abuts against the side of the circuit board 30 away from the bottom plate 10, so as to limit and fix the circuit board 30 between the first limiting surface 2211 and the third limiting surface 2121.

[0059] It should be noted that the support part 212, on the one hand, provides the third limiting surface 2121 abutting against the side of the circuit board 30 close to the bottom plate 10, and plays a limiting role in the opposite direction of the first direction Z, and on the other hand, effectively limits the distance between the circuit board 30 and the bottom plate 10, so that the circuit board 30 has a suitable space; the circuit board 30 is limited and fixed between the first limiting surface 2211 and the third limiting surface 2121 through the abutment of the first limiting surface 2211 and the third limiting surface 2121.

[0060] Please refer to Figure 2 and Figure 3 , in some embodiments, the fixing structure further comprises: a positioning component 40, the positioning component 40 comprises a positioning member 41 connected with the bottom plate 10 and extending in the first direction Z; the circuit board 30 has a second hole 32 penetrating in the first direction Z, and when the circuit board 30 is limited and fixed between the first limiting surface 2211 and the third limiting surface 2121, the positioning member 41 passes through the second hole 32 to limit the circuit board 30.

[0061] It should be noted that the extension part 213 passes through the first hole 31, and the positioning part 41 passes through the second hole 32 to limit the circuit board 30, prevent the circuit board from shaking or loosening, so that the position of the circuit board 30 in the fixing structure is more stable, which is beneficial to limiting the circuit board 30 in the second direction Y and the third direction X. In addition, the number of positioning components 40 can be multiple, which can be adjusted according to the actual situation.

[0062] Please refer to Figure 3 As shown in the drawings, in some embodiments, the positioning component 40 further comprises: a first support 42, the first support 42 is connected with the positioning part 41 and the bottom plate 10 respectively and extends along the first direction Z, and the first support 42 has a fourth limiting surface 421 facing the circuit board 30, and the fourth limiting surface 421 is in the same plane as the third limiting surface 2121.

[0063] It should be noted that the number of first supports 42 can be multiple, and the multiple first supports 42 are arranged around the positioning part 41. The first support 42 is provided to provide more support points, so that the circuit board 30 can obtain more uniform support force during the fixing process. In this way, the circuit board 30 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 30 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 42 can also increase the rigidity of the structure, further improving the stability of the circuit board. In addition, the fourth limiting surface 421 is in the same plane as the third limiting surface 2121, so that the circuit board limiting and fixing is more stable.

[0064] Please refer to Figure 3 As shown in the drawings, in some embodiments, the fixing structure further comprises: a limiting component 50, the limiting component 50 comprises: a third limiting part 51, the third limiting part 51 is connected with the bottom plate 10 and the support part 212 respectively and extends along the first direction Z; a fourth limiting part 52, connected with one end of the third limiting part 51 away from the bottom plate 10, the fourth limiting part 52 has a guide surface 521 and a sixth limiting surface 522, the sixth limiting surface 522 faces the extension part 213 and is connected with the guide surface 521; the third limiting part 51 protrudes from the fourth limiting part 52 and has a fifth limiting surface 511 facing the circuit board 30, the fifth limiting surface 511 is in the same plane as the third limiting surface 2121, when the circuit board 30 is limited and fixed between the first limiting surface 2211 and the third limiting surface 2121, the fifth limiting surface 511 and the sixth limiting surface 522 form a limiting step to abut and limit the circuit board 30.

[0065] It should be noted that the guide surface 521 plays a guiding role for the circuit board 30, guiding the circuit board 30 to move towards the limiting step; after the extension part 213 passes through the first hole 31, the fifth limiting surface 511 and the sixth limiting surface 522 form a limiting step to abut and limit the circuit board 30, so that the circuit board 30 is limited in the limiting step; in some embodiments, the support part 212 is connected to the limiting part 50 in the second direction Y and the third direction X to limit the circuit board 30 in the second direction Y and the third direction X; for example, the extension part 213 passes through the circuit board 30 at the edge of the circuit board 30, and the circuit board abuts against the sixth limiting surface 522, thereby limiting the position of the circuit board 30 on the bottom plate 10.

[0066] Please refer to Figure 3 In some embodiments, the fixing structure further comprises a second support 60, the second support 60 is connected with the bottom plate 10 and extends in the first direction Z, and the second support 60 has a seventh limiting surface 61 facing the circuit board 30, and the seventh limiting surface 61 is in the same plane as the third limiting surface 2121. It should be noted that the number of second supports 60 can be multiple, which can be adjusted according to actual conditions to provide more support points for the circuit board 30, so that the circuit board can obtain more uniform support force during the fixing process.

[0067] Please refer to Figure 2 、 Figure 3 and Figure 5 In some embodiments, the fixing structure further comprises a top plate 70 opposite to the bottom plate 10 in the first direction Z, a side plate 80 connected with the bottom plate 10 and extending in the first direction Z, the side plate 80 surrounds a containing cavity 82 on the bottom plate 10, the containing cavity 82 is used for placing the circuit board 30, a buckle 71 connected with the top plate 70, and a buckle protrusion 81 provided on a side of the side plate 80 away from the containing cavity 82, the buckle 71 and the buckle protrusion 81 are engaged to connect the top plate 70 and the side plate 80.

[0068] It should be noted that the side plate 80 surrounds the containing cavity 82 on the bottom plate 10, and the buckle 71 and the buckle protrusion 81 are engaged to connect the top plate 70 and the side plate 80, so that the circuit board 30 can be completely surrounded in the containing cavity 82, thereby providing better protection and improving the stability and reliability of the circuit board.

[0069] In some embodiments, the connecting piece 21 is arranged close to the side plate 80, the limiting component 50 is connected with the side plate 80, on the one hand, the position of the circuit board 30 is effectively limited, on the other hand, the strength of the connecting piece 21 and the strength of the side plate 80 are strengthened, the second supporting piece 60 is connected with the side plate 80, and the positioning component 40 is arranged close to the middle position of the bottom plate 10, thereby providing more supporting points for the circuit board 30, so that the circuit board can obtain more uniform supporting force during the fixing process.

[0070] As shown in Figure 1 and Figure 5 , in some embodiments, the fixing structure further comprises: a fifth limiting part 72 connected with the top plate 70 and extending in the opposite direction of the first direction Z, when the top plate 70 is connected with the side plate 80, the end of the fifth limiting part 72 away from the top plate 70 abuts against the fixing piece 22.

[0071] It should be noted that the end of the fifth limiting part 72 away from the top plate 70 abuts against the fixing piece 22, that is, abuts against the side of the first limiting part 221 of the fixing piece 22 away from the first limiting surface 2211, on the one hand, the distance between the circuit board 30 and the top plate 70 is effectively limited, on the other hand, the problem of excessive shaking of the circuit board and damage is prevented. In addition, the fifth limiting part 72 corresponds to the fixing piece 22 one by one.

[0072] As shown in Figure 2 and Figure 5 , in some embodiments, the side plate 80 has a limiting groove 83 facing the top plate 70 in the second direction Y, and / or the side plate 80 has a limiting groove 83 facing the top plate 70 in the third direction X; the third direction X intersects with the first direction Z and the second direction Y; the fixing structure further comprises: a limiting baffle 73 connected with the top plate 70, when the top plate 70 is connected with the side plate 80, the limiting groove 83 and the limiting baffle 73 correspond one by one to limit the position.

[0073] It should be noted that the limiting groove 83 and the limiting baffle 73 are engaged and matched to limit the position of the top plate 70 and the side plate 80 in the second direction Y and the third direction X when they are connected, so that the relative position of the top plate 70 and the side plate 80 is limited, which can ensure the alignment between the top plate 70 and the side plate 80, prevent them from shifting or shaking, and further improve the stability of the product.

[0074] As shown in Figure 2 and Figure 4 , in some embodiments, the fixing structure further comprises: a stabilizing component 90, the stabilizing component 90 comprises a first reinforcing piece 91, the first reinforcing piece 91 is connected with the top plate 70, and when the bottom plate 10 is connected with the side plate 80, the first reinforcing piece 91 abuts against the side of the side plate 80 facing the accommodating cavity 82.

[0075] It should be noted that the first reinforcing member 91 is an outer contour boss of the top plate 70, the first reinforcing member 91 abuts against one side of the side plate 80 facing the accommodating cavity 82, and the first reinforcing member 91 plays a role in preventing the top plate 70 from being deformed and bent, and can also be used as a fender to abut against one side of the side plate 80 facing the accommodating cavity 82 to play a role in protection.

[0076] In some embodiments, the stabilizing component 90 further comprises: a plurality of second reinforcing members 92, the plurality of second reinforcing members 92 are connected to one side of the top plate 70 facing the bottom plate 10, the plurality of second reinforcing members 92 are intersectingly arranged on the top plate 70, and / or the plurality of second reinforcing members 92 are connected to one side of the bottom plate 10 facing the top plate 70, and the plurality of second reinforcing members 92 are intersectingly arranged on the bottom plate 10.

[0077] It should be noted that the second reinforcing member 92 is arranged on the top plate 70 and the bottom plate 10 to enhance the rigidity and stability of the structure of the top plate 70 and the bottom plate 10, so as to resist the action of external force and reduce the deformation of the structure; the plurality of second reinforcing members 92 are intersectingly arranged on the top plate 70 and the bottom plate 10, the reinforcing members intersect with each other to form a firm support network, so that the top plate 70 and the bottom plate 10 can uniformly disperse stress when subjected to external force, and prevent local damage or instability.

[0078] In some embodiments, the connection process of the bottom plate 10, the top plate 70 and the circuit board 30 in the present application is as follows:

[0079] First, the first hole 31, the second hole 32 of the circuit board 30 are respectively aligned with the extension 213, the positioning piece 41, press the circuit board 30, so that the extension 213 passes through the first hole 31 at the same time, the positioning piece 41 passes through the second hole 32, the one side of the circuit board 30 close to the bottom plate 10 is abutted with the third limit surface 2121, then, the second limit part 223 in the fixing piece 22 is along the first direction's opposite direction through hole 211, when the second limit part 223 passes out through hole 211, the second limit part 223 is based on the elastic deformation rebound, so that the second limit surface 2233 is abutted with the one side of the bottom plate 10 away from the containing cavity 82, at this time, the first limit surface 2211 is abutted with the one side of the circuit board 30 away from the bottom plate 10, to limit and fix the circuit board 30, finally, the limit slot 83 is engaged with the limit baffle 73, the buckle 71 is engaged with the buckle protrusion 81, to make the top plate 70 and the side plate 80 connect, so as to achieve the purpose of the bottom plate 10 and the top plate 70 and the circuit board 30 connection. The circuit board is fixed and limited by interference fit in the application, which prevents the circuit board from shaking. The product assembly connection steps are optimized, the use of metal bushings and bolts is reduced, the product cost is effectively reduced, the circuit board 30 is limited in the shell, the use of screws, metal bushings and hot riveting machines is reduced, the product weight is reduced, and no other fixing equipment is needed in the production line, the product cost is reduced, the work rhythm is accelerated, and the production efficiency is improved. The fixing structure in the above embodiment can achieve the purpose of completely limiting the circuit board.

[0080] Correspondingly, in some embodiments, a circuit fixing structure can be applied in a battery management system and other electronic products.

[0081] The above describes in detail the circuit board fixing structure provided by the application. The principles and implementation modes of the application are described by using specific examples. The above example is only used to help understand the method and core idea of the application. For those skilled in the art, according to the idea of the application, the specific implementation mode and application range can be changed. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A circuit board fixing structure characterized by comprising: The circuit board fixing structure comprises: a bottom plate and a fixing component arranged on the bottom plate, the fixing component being used for fixing a circuit board, the fixing component comprising: a connecting piece connected with the bottom plate and extending along a first direction, the connecting piece having a through hole penetrating along the first direction; a fixing piece connected with the connecting piece through the through hole; the circuit board having a first hole penetrating along the first direction, the fixing piece abutting against the connecting piece through the first hole and the through hole, so as to limit and fix the circuit board.

2. The circuit board fixing structure according to claim 1, wherein the fixing piece comprises: a first limiting part, an elastic part connected with the first limiting part, the elastic part having a slot penetrating along the first direction, the first limiting part protruding from the elastic part and having a first limiting surface facing the bottom plate; a second limiting part connected with one end of the elastic part away from the first limiting part, the second limiting part having a gap communicating with the slot, the second limiting part deforming through the gap to abut against one surface of the bottom plate away from the circuit board through the through hole in the deformed state, and the first limiting surface abutting against one surface of the circuit board away from the bottom plate.

3. The circuit board fixing structure according to claim 2, wherein the elastic part comprises a plurality of elastic pieces arranged at intervals, the slot being formed between the plurality of elastic pieces; the second limiting part comprises a plurality of limiting pieces, the gap being formed between the plurality of limiting pieces, the limiting pieces being connected with the elastic pieces one by one, the limiting pieces protruding from the elastic pieces and having a second limiting surface facing the bottom plate, the second limiting surface abutting against one surface of the bottom plate away from the circuit board when the second limiting part passes through the through hole.

4. The circuit board fixing structure according to claim 2, wherein the connecting piece comprises: a support part connected with the bottom plate and extending along the first direction; an extension part connected with one end of the support part away from the bottom plate; the support part protruding from the extension part and having a third limiting surface facing the first limiting surface, the extension part passing through the first hole to abut the third limiting surface against one surface of the circuit board away from the bottom plate, so that the circuit board is limited and fixed between the first limiting surface and the third limiting surface.

5. The circuit board fixing structure according to claim 4, characterized by The circuit board fixing structure further comprises: a positioning component comprising a positioning piece connected with the bottom plate and extending along the first direction; the circuit board having a second hole penetrating along the first direction, the positioning piece passing through the second hole when the circuit board is limited and fixed between the first limiting surface and the third limiting surface, so as to limit the circuit board.

6. The circuit board fixing structure according to claim 5, wherein the positioning component further comprises: a first support piece connected with the positioning piece and the bottom plate respectively and extending along the first direction, the first support piece having a fourth limiting surface facing the circuit board, 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 The circuit board fixing structure further comprises: A limiting component, comprising: A third limiting part connected with the bottom plate and the supporting part respectively and extending along a first direction; A fourth limiting part connected with one end of the third limiting part away from the bottom plate, the fourth limiting part having a guide surface and a sixth limiting surface, the sixth limiting surface being toward the extending part and connected with the guide surface; The third limiting part protruding from the fourth limiting part and having a fifth limiting surface toward the circuit board, the fifth limiting surface being in the same plane with the third limiting surface, when the circuit board is limited and fixed between the first limiting surface and the third limiting surface, the fifth limiting surface and the sixth limiting surface constituting 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 supporting part connected with the bottom plate and extending along the first direction, the second supporting part having a seventh limiting surface toward the circuit board, the seventh limiting surface being in the same plane with the third limiting surface.

9. The circuit board fixing structure according to claim 4, characterized by Further comprising: A top plate opposite to the bottom plate along the first direction; A side plate connected with the bottom plate and extending along the first direction, the side plate surrounding a containing cavity on the bottom plate, the containing cavity being used for placing the circuit board; A buckle connected with the top plate; A buckle protrusion provided on a side of the side plate away from the containing cavity, the buckle and the buckle protrusion being engaged to connect the top plate with the side plate.

10. The circuit board fixing structure according to claim 9, characterized by Further comprising: A fifth limiting part connected with the top plate and extending along the opposite direction of the first direction, one end of the fifth limiting part away from the top plate abutting against the fixing part when the top plate is connected with the side plate.

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