Grounding structure, controller and vehicle

Abstract

The invention provides a grounding structure, a controller and a vehicle, and belongs to the technical field of controllers, the grounding structure comprises a circuit board, a conducting strip and a locking piece, the circuit board is provided with a matching through hole and a grounding end, the conducting strip is fixed on the circuit board and is conductively connected with the grounding end, the conducting strip is provided with a mounting hole, and the locking piece is arranged in the mounting hole. And the locking piece sequentially passes through the matching through hole and the mounting hole and is used for extruding the conducting strip on the grounding component. According to the grounding structure provided by the invention, the conducting strip is connected with the grounding end on the circuit board, and the conducting strip is in contact with the grounding component, so that grounding connection between the circuit board and the grounding component is realized; because the locking piece is not directly extruded on the circuit board, but the grounding connection of the circuit board and the grounding component is realized by extruding the conducting strip, so that the extrusion force between the locking piece and the conducting strip can be increased as much as possible, the locking piece is prevented from loosening during long-term use, and the durability and reliability in a long-term environment are guaranteed; and the grounding structure can transmit large current.

Description

Technical Field

[0001] The present application belongs to the field of controller technology, and in particular, relates to a grounding structure, a controller and a vehicle. Background Art

[0002] For the printed circuit board (PCB) in the controller, screws are usually used to fix the circuit board to the housing of the controller to achieve grounding connection between the circuit board and the housing. When the pre-tightening force between the screw and the circuit board is large, the circuit board may be damaged. When the pre-tightening force between the screw and the circuit board is small, the screw is easy to loosen after long-term use, and the loose screw is not conducive to the transmission of large current between the screw and the housing. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a grounding structure, a controller and a vehicle to solve the technical problem that when the circuit board is directly locked to the housing of the controller using screws in the existing related technology, if the pre-tightening force between the screws and the circuit board is large, the circuit board may be damaged; if the pre-tightening force between the screws and the circuit board is small, the screws may easily become loose after long-term use.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] A first aspect of the present application provides a grounding structure, comprising:

[0006] A circuit board, wherein the circuit board is provided with a mating via and a grounding terminal;

[0007] A conductive sheet, fixed on the circuit board and conductively connected to the ground terminal, and a mounting hole is provided on the conductive sheet;

[0008] A locking piece passes through the matching through hole and the mounting hole in sequence, and is used to press the conductive sheet onto the grounding component.

[0009] In some implementations, the conductive sheet is disposed on a board surface on one side of the circuit board, and a diameter of the mounting hole is smaller than a diameter of the matching through hole.

[0010] In some implementations, the grounding structure further includes a protective member, which is disposed on a side of the circuit board away from the conductive sheet, and a connecting hole is disposed on the protective member, and the protective member can be limited on the circuit board by the locking member.

[0011] In some implementations, the protective member includes a main body and a lower extension tube, the main body is provided with an opening, a lower extension tube is provided on the side of the main body facing the circuit board, the lower extension tube is communicated with the opening, the free end of the lower extension tube is in contact with the conductive sheet, the locking member is inserted into the lower extension tube through the opening, and the locking member is used to squeeze the lower extension tube onto the conductive sheet.

[0012] In some implementations, the protective member further includes an upper extension tube, the upper extension tube is disposed on the side of the main body facing away from the circuit board, the upper extension tube is communicated with the opening, and the locking member passes through the upper extension tube.

[0013] In some implementations, a length of the lower extension tube from an end connected to the main body to an end away from the main body is greater than a thickness of the circuit board.

[0014] In some implementations, the locking member is a step screw, which includes a screw head and a screw shaft connected to the screw head, a first limiting surface is formed between the screw head and the screw shaft, a second limiting surface is formed on the screw shaft, the first limiting surface is in contact with a side of the protective member facing away from the circuit board, and the second limiting surface is in contact with the conductive sheet.

[0015] A second aspect of the present application provides a controller, comprising a metal shell and a grounding structure as described in any of the above schemes, wherein the grounding structure is connected to the metal shell.

[0016] In some implementations, the metal shell includes a shell body and a grounding column, the grounding column is disposed on an inner side surface of the shell body, and the locking element of the grounding structure is detachably connected to the grounding column.

[0017] A third aspect of the present application provides a vehicle, comprising a controller as described in any of the above schemes.

[0018] The beneficial effects of the present application are as follows: the grounding structure provided by the present application realizes the grounding connection between the circuit board and the grounding component by connecting the conductive sheet to the grounding end on the circuit board and contacting the conductive sheet with the grounding component; since the locking piece is not directly extruded on the circuit board, but the grounding connection between the circuit board and the grounding component is realized by extruding the conductive sheet, the extrusion force between the locking piece and the conductive sheet can be increased as much as possible to prevent the locking piece from loosening during long-term use, thereby ensuring durable reliability in a long-term environment and ensuring that the grounding structure can transmit large currents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a simple schematic diagram of the prior art of using screws to lock the pads on the circuit board to the housing of the controller;

[0021] Figure 2 An exploded schematic diagram of a grounding structure provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of a structure in which a conductive sheet provided in an embodiment of the present application is fixed on a circuit board;

[0023] Figure 4 An exploded schematic diagram of a conductive sheet and a circuit board provided in an embodiment of the present application;

[0024] Figure 5 Another exploded schematic diagram of the grounding structure provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of a locking device provided in an embodiment of the present application;

[0026] Figure 7 A partial enlarged view of the connection between the grounding structure and the grounding column provided in the embodiment of the present application;

[0027] Figure 8 An exploded front view of a grounding structure provided in an embodiment of the present application;

[0028] Fig. 9 An exploded cross-sectional view of a grounding structure provided in an embodiment of the present application;

[0029] Fig.10 Another partial enlarged view of the connection between the grounding structure and the grounding column provided in an embodiment of the present application.

[0030] Among them, the reference numerals in the figure are:

[0031] 10-related circuit board; 20-screws;

[0032] 101- soldering pad;

[0033] 1-circuit board; 2-conductive sheet; 3-locking piece; 4-protective piece; 5-metal housing;

[0034] 11-matching through hole;

[0035] 21-Mounting hole;

[0036] 31-screw head; 32-screw shaft; 33-first limiting surface; 34-second limiting surface;

[0037] 41-connection hole; 42-main body; 43-lower extension tube; 44-upper extension tube;

[0038] 51-shell body; 52-grounding column. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, but cannot be understood as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inside", "outside", "up", "down", "left", "right", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In order to clearly describe the technical solution of the present application, the words "first", "second" and the like are used to distinguish the same or similar items with substantially the same functions and effects. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit the difference.

[0042] In this application, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] It should be noted that, in this application, words such as "in one embodiment", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in this application as "in one embodiment", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in one embodiment", "exemplarily", "for example", etc. is intended to present related concepts in a specific way.

[0045] See also Figure 1 In the prior art, the relevant circuit board 10 is usually directly locked to the housing of the controller by contacting the screw 20 with the pad 101 to achieve the ground connection between the relevant circuit board 10 and the housing. However, when the pre-tightening force between the screw 20 and the relevant circuit board 10 is large, the relevant circuit board 10 may be damaged due to excessive squeezing force; when the pre-tightening force between the screw 20 and the relevant circuit board 10 is small, the screw 20 is easily loosened after long-term use, and the loosening of the screw 20 is not conducive to the transmission of large current between the screw 20 and the housing.

[0046] See also Figure 2-Figure 4 , Figure 2 An exploded schematic diagram of a grounding structure provided in an embodiment of the present application, Figure 3 This is a schematic diagram of a structure in which a conductive sheet 2 provided in an embodiment of the present application is fixed on a circuit board 1. Figure 4 An exploded schematic diagram of the conductive sheet 2 and the circuit board 1 provided in an embodiment of the present application.

[0047] The grounding structure provided in the embodiment of the present application includes a circuit board 1, a conductive sheet 2 and a locking member 3. Figure 2 , schematically showing a circuit board 1, a conductive sheet 2 and a locking member 3. It is worth noting that the drawings in the embodiments of the present application are only schematic diagrams, for example, structures such as connectors on the circuit board 1 are not schematically shown in the drawings.

[0048] Regarding the circuit board 1, the circuit board 1 is a plate-shaped insulating material made by printed circuit technology, on which the installation positions and connection lines of various electronic components are arranged to achieve electrical connection and mechanical fixation between the electronic components. When the circuit board 1 is set on a grounding member such as a housing of a controller, the circuit board 1 needs to be grounded to the grounding member to improve safety.

[0049] See also Figure 3 , schematically shows that a conductive sheet 2 is provided on the circuit board 1, the conductive sheet 2 is provided on one side of the circuit board 1, and the conductive sheet 2 is electrically connected to the ground terminal on the circuit board 1. The ground terminal on the circuit board 1 can be understood as the ground terminal of the connection line on the circuit board 1.

[0050] Regarding the connection method between the conductive sheet 2 and the circuit board 1, in one example, the conductive sheet 2 is welded on the circuit board 1 or adhered to the circuit board 1 using conductive adhesive; in other examples, the conductive sheet 2 is detachably connected to the circuit board 1 via a connector.

[0051] Regarding the material of the conductive sheet 2 , in one example, the conductive sheet 2 is made of metal material, such as a copper sheet.

[0052] Regarding the shape of the conductive sheet 2 , in one example, the shape of the conductive sheet 2 may be circular, square, elliptical, or the like.

[0053] Regarding the thickness of the conductive sheet 2 , in one example, the thickness of the conductive sheet 2 is less than or equal to the thickness of the circuit board 1 ; in other examples, the thickness of the conductive sheet 2 is greater than the thickness of the circuit board 1 .

[0054] See also Figure 2 , schematically shows a locking piece 3, which is used to press the conductive sheet 2 onto the grounding member. When the circuit board 1 needs to be grounded to the grounding member, the locking piece 3 is used to fix the conductive sheet 2 on the grounding member, and the conductive sheet 2 is connected to the grounding terminal on the circuit board 1 and the conductive sheet 2 is in contact with the grounding member, so as to achieve the grounding connection between the circuit board 1 and the grounding member.

[0055] In one example, the fastener 3 is a screw, a rivet, a buckle, or the like.

[0056] In one example, the number of the conductive sheets 2 is more than one, and each conductive sheet 2 corresponds to a fastener 3 , that is, each conductive sheet 2 is pressed onto the grounding component by the corresponding fastener 3 .

[0057] In one example, according to the size of the current transmission, a reasonable welding area between the conductive sheet 2 and the circuit board 1 is set, and a reasonable extrusion area of ​​the locking piece 3 for extruding the conductive sheet 2 is set, that is, a reasonable contact area between the locking piece 3 and the conductive sheet 2.

[0058] In the embodiment of the present application, the locking member 3 is not directly squeezed onto the circuit board 1, but the grounding connection between the circuit board 1 and the grounding component is achieved by squeezing the conductive sheet 2, so that the squeezing force between the locking member 3 and the conductive sheet 2 can be increased as much as possible to prevent the locking member 3 from loosening during long-term use, thereby ensuring durable reliability in a long-term environment and ensuring that the grounding structure can transmit large currents.

[0059] In one embodiment, see Figure 2 The circuit board 1 is provided with a matching through hole 11, the conductive sheet 2 is provided with a mounting hole 21, the conductive sheet 2 is provided on the board surface of one side of the circuit board 1, and the locking member 3 passes through the matching through hole 11 and the mounting hole 21 in sequence and is inserted into the grounding member (i.e. Figure 2In other implementations, the locking member 3 is located on one side of the circuit board 1, the conductive sheet 2 protrudes from the edge of the circuit board 1 along the circumferential direction, and the locking member 3 passes through the conductive sheet 2 and is inserted into the grounding member. The following mainly takes the example of the locking member 3 passing through the circuit board 1 and the conductive sheet 2 in sequence to further describe the connection between the locking member 3 and the conductive sheet 2.

[0060] See also Figure 2 , schematically illustrates the mating through hole 11 on the circuit board 1 and the mounting hole 21 on the conductive sheet 2. In one example, the axis of the mating through hole 11 is coaxially arranged with the axis of the mounting hole 21; in other examples, the axis of the mating through hole 11 is non-coaxially arranged with the axis of the mounting hole 21.

[0061] Since the locking member 3 presses the conductive sheet 2 onto the grounding member, the diameter of the mounting hole 21 needs to be designed to be smaller than the diameter of the matching through hole 11 to prevent the locking member 3 from exerting a pressing force on the circuit board 1. Figure 4 , Figure 4 It is clearly shown in the figure that the aperture of the matching through hole 11 on the circuit board 1 is larger than the aperture of the mounting hole 21 on the conductive sheet 2 .

[0062] It is worth noting that when the locking piece 3 is a screw or a bolt, the diameter of the matching through hole 11 on the circuit board 1 is not less than the diameter of the head of the locking piece 3, that is, the diameter of the matching through hole 11 on the circuit board 1 is not less than the diameter of the head of the screw or the bolt, so that the locking piece 3 can directly squeeze the conductive sheet 2 without squeezing the circuit board 1.

[0063] In one example, the mating through hole 11 on the circuit board 1 and the mounting hole 21 on the conductive sheet 2 have the same shape; in other examples, the mating through hole 11 on the circuit board 1 and the mounting hole 21 on the conductive sheet 2 have different shapes.

[0064] In one example, the matching through hole 11 on the circuit board 1 is in the shape of a circular hole, the mounting hole 21 on the conductive sheet 2 is in the shape of a circular hole, and the diameter of the matching through hole 11 is greater than the diameter of the mounting hole 21 .

[0065] In one example, a mating through hole 11 is provided on the circuit board 1, and the mating through hole 11 can be provided in the middle area of ​​the circuit board 1; in other examples, two or more mating through holes 11 are provided on the circuit board 1, each mating through hole 11 corresponds to a conductive sheet 2, and the locking member 3 passes through the corresponding mating through hole 11 and the mounting hole 21 on the corresponding conductive sheet 2 and is inserted into the grounding component.

[0066] In the embodiment of the present application, the aperture of the mating through hole 11 on the circuit board 1 is set to be larger than the aperture of the mounting hole 21 on the conductive sheet 2 to prevent the locking fixture 3 from passing through the mating through hole 11 on the circuit board 1 and exerting an extrusion force on the circuit board 1. That is, it can be understood that the aperture of the mating through hole 11 on the circuit board 1 is set to be larger than the aperture of the mounting hole 21 on the conductive sheet 2, so that the mating through hole 11 can avoid the locking fixture 3.

[0067] See also Figure 5-Figure 7 , Figure 5 Another exploded schematic diagram of the grounding structure provided in the embodiment of the present application, Figure 6 This is a schematic diagram of the structure of the locking element 3 provided in the embodiment of the present application. Figure 7 A partial enlarged view of the connection between the grounding structure provided in the embodiment of the present application and the grounding column 52.

[0068] In one embodiment, the grounding structure further includes a protective member 4 , which is disposed on a side of the circuit board 1 away from the conductive sheet 2 , and the protective member 4 can be limited on the circuit board 1 by a locking member 3 .

[0069] See also Figure 5 , schematically showing the protective member 4. In the embodiment of the present application, by providing the protective member 4, the circuit board 1 can be protected, the circuit board 1 can be prevented from being physically damaged, and the service life of the circuit board 1 can be increased.

[0070] In one example, the protective element 4 is made of plastic.

[0071] In one example, the material of the protective element 4 is a relatively soft material.

[0072] In one example, see Figure 5 A connecting hole 41 is provided on the protective member 4, and the locking member 3 passes through the connecting hole 41, the matching through hole 11, and the mounting hole 21 in sequence to be connected with the grounding member.

[0073] In one example, the shape of the connection hole 41 on the protective member 4 is a circular hole; in other examples, the shape of the connection hole 41 on the protective member 4 is a non-circular hole.

[0074] In one example, the axis of the connecting hole 41 on the protective member 4 is colinear with the axis of the mounting hole 21 on the conductive sheet 2 .

[0075] In one example, the locking element 3 is a stepped screw, see Figure 6 , schematically shows a step screw, which includes a screw head 31 and a screw shank 32 connected to the screw head 31, a first limiting surface 33 is formed between the screw head 31 and the screw shank 32, and a second limiting surface 34 is formed on the screw shank 32, see Figure 7The first limiting surface 33 is used to extrude the protective member 4 , and the second limiting surface 34 is used to extrude the conductive sheet 2 .

[0076] In one example, see Figure 7 When the first limiting surface 33 has an extrusion effect on the protective member 4 and the circuit board 1 at the same time, the relationship between the distance d1 between the first limiting surface 33 and the second limiting surface 34 on the protective member 4 and the thickness and d2 of the circuit board 1 and the protective member 4 should be reasonably set to ensure that the step screw can be tightly pressed on the conductive sheet 2 on the grounding component without generating a large extrusion force on the circuit board 1 and the protective member 4.

[0077] In an example, the distance d1 between the first limiting surface 33 and the second limiting surface 34 is slightly smaller than the thickness d2 of the circuit board 1 and the protective member 4 , wherein the thickness of the protective member 4 refers to the thickness of the protective member 4 before deformation.

[0078] In an example, the difference between the thickness d2 of the circuit board 1 and the protective member 4 and the distance d1 between the first limiting surface 33 and the second limiting surface 34 is in the range of 0 to 2 mm.

[0079] For example, the difference between the thickness d2 of the circuit board 1 and the protective member 4 and the distance d1 between the first limiting surface 33 and the second limiting surface 34 is 0-0.2 mm or 0.2-0.4 mm or 0.4-0.6 mm or 0.6-0.8 mm or 0.8-1.0 mm or 1.0-1.2 mm or 1.2-1.4 mm or 1.4-1.6 mm or 1.6-1.8 mm or 1.8-2.0 mm, etc.

[0080] In the embodiment of the present application, the protective member 4 can be limited on the circuit board 1 by the locking member 3. At this time, the protective member 4 can be connected to the circuit board 1 without other additional connectors. This can reduce the number of parts, save costs, and improve the assembly efficiency of the grounding structure.

[0081] See also Figure 8-Figure 10 , Figure 8 This is an exploded front view of the grounding structure provided in an embodiment of the present application. Fig. 9 An exploded cross-sectional view of a grounding structure provided in an embodiment of the present application, Fig.10 Another partial enlarged view of the connection between the grounding structure provided in the embodiment of the present application and the grounding column 52.

[0082] In one embodiment, see Figure 8-Figure 10The protective member 4 includes a main body 42 and a lower extension tube 43. The main body 42 is provided with an opening. The lower extension tube 43 is provided on the side of the main body 42 facing the circuit board 1. The interior of the lower extension tube 43 is connected with the opening. The free end of the lower extension tube 43 is in contact with the conductive sheet 2. The locking member 3 is inserted into the lower extension tube 43 through the opening on the main body 42 and the locking member 3 is used to squeeze the lower extension tube 43 onto the conductive sheet 2.

[0083] See also Fig.10 , showing that the free end of the lower extension tube 43 is in contact with the conductive sheet 2. The outer diameter of the lower extension tube 43 is not greater than the diameter of the matching through hole 11 on the circuit board 1, so that the lower extension tube 43 can pass through the matching through hole 11 on the circuit board 1 and contact the conductive sheet 2.

[0084] In one example, the difference between the diameter of the matching through hole 11 on the circuit board 1 and the outer diameter of the lower extension tube 43 is in the range of 0 to 3 mm.

[0085] In one example, the length of the lower extension tube 43 from one end connected to the main body 42 to one end away from the main body 42 is greater than the thickness of the circuit board 1 .

[0086] In one example, the difference between the length of the lower extension tube 43 from the end connected to the main body 42 to the end away from the main body 42 and the thickness of the circuit board 1 is in the range of 0 to 5 mm.

[0087] For example, the difference between the length of the lower extension tube 43 from the end connected to the main body 42 to the end away from the main body 42 and the thickness of the circuit board 1 is in the range of 0 to 0.5 mm, 0.5 to 1.0 mm, 1.0 to 1.5 mm, 1.5 to 2.0 mm, 2.0 to 2.5 mm, 2.5 to 3.0 mm, 3.0 to 3.5 mm, 3.5 to 4 mm, 4 to 4.5 mm, 4.5 to 5 mm, etc.

[0088] In one example, the distance d1 between the first limit surface 33 and the second limit surface 34 is slightly smaller than the distance d3 between the side of the main body 42 away from the lower extension tube 43 and the free end of the lower extension tube 43, wherein the distance d3 between the side of the main body 42 away from the lower extension tube 43 and the free end of the lower extension tube 43 refers to the distance of the protective member 4 in an undeformed state.

[0089] In one example, the difference between the distance d3 between the side of the main body 42 facing away from the lower extension tube 43 and the free end of the lower extension tube 43 and the distance d1 between the first limiting surface 33 and the second limiting surface 34 is in the range of 0 to 2 mm.

[0090] For example, the difference between the distance d3 between the side of the main body 42 facing away from the lower extension tube 43 and the free end of the lower extension tube 43 and the distance d1 between the first limiting surface 33 and the second limiting surface 34 is 0~0.2mm or 0.2~0.4mm or 0.4~0.6mm or 0.6~0.8mm or 0.8~1.0mm or 1.0~1.2mm or 1.2~1.4mm or 1.4~1.6mm or 1.6~1.8mm or 1.8~2.0mm, etc.

[0091] In the embodiment of the present application, the protective member 4 is provided to include a lower extension tube 43, so that when the protective member 4 is squeezed by the first limiting surface 33 of the locking member 3, the protective member 4 can be squeezed between the first limiting surface 33 and the conductive sheet 2, thereby avoiding squeezing of the circuit board 1 when the protective member 4 is limited on the circuit board 1 by the locking member 3, which can facilitate further protection of the circuit board 1.

[0092] In one embodiment, see Figure 8-Figure 10 The protective member 4 further includes an upper extension tube 44 , which is disposed on the side of the main body 42 away from the circuit board 1 , the upper extension tube 44 is communicated with the opening on the main body 42 , and the locking member 3 passes through the upper extension tube 44 .

[0093] In this embodiment, the opening on the main body 42 , the interior of the upper extension tube 44 , and the interior of the lower extension tube 43 together form the connecting hole 41 on the protective member 4 .

[0094] In one example, the upper extension tube 44 and the lower extension tube 43 are integrally formed on the main body 42 .

[0095] In one example, the length of the upper extension tube 44 along the axial direction thereof is smaller than the length of the lower extension body 43 along the axial direction thereof.

[0096] In one example, the length of the upper extension tube 44 from one end connected to the main body 42 to one end away from the main body 42 is close to the thickness of the main body 42 .

[0097] In one example, the length of the upper extension tube 44 from the end connected to the main body 42 to the end away from the main body 42 is in the range of 1 to 3 mm.

[0098] For example, the length of the upper extension tube 44 from the end connected to the main body 42 to the end away from the main body 42 is 1.0-1.2 mm or 1.2-1.4 mm or 1.4-1.6 mm or 1.6-1.8 mm or 1.8-2.0 mm or 2.0-2.2 mm or 2.2-2.4 mm or 2.4-2.6 mm or 2.6-2.8 mm or 2.8-3.0 mm.

[0099] See also Fig.10The locking member 3 is a stepped screw, a first limiting surface 33 is formed between the screw head 31 and the screw rod 32, a second limiting surface 34 is formed on the screw rod 32, the first limiting surface 33 is in contact with the upper extension tube 44, the upper extension tube 44 and the lower extension tube 43 of the protective member 4 are squeezed between the first limiting surface 33 and the conductive sheet 2, and the second limiting surface 34 is in contact with the conductive sheet 2, that is, the conductive sheet 2 is squeezed between the second limiting surface 34 and the grounding component.

[0100] In one example, the distance d1 between the first limiting surface 33 and the second limiting surface 34 is slightly smaller than the distance d4 between the free end surface of the upper extension tube 44 and the free end surface of the lower extension tube 43, wherein the distance d4 between the free end surface of the upper extension tube 44 and the free end surface of the lower extension tube 43 refers to the distance when the protective member 4 is not deformed.

[0101] In one example, the difference between the distance d4 between the free end surface of the upper extension tube 44 and the free end surface of the lower extension tube 43 and the distance d1 between the first limiting surface 33 and the second limiting surface 34 is in the range of 0 to 2 mm.

[0102] For example, the difference between the distance d4 between the free end surface of the upper extension tube 44 and the free end surface of the lower extension tube 43 and the distance d1 between the first limiting surface 33 and the second limiting surface 34 is 0~0.2mm or 0.2~0.4mm or 0.4~0.6mm or 0.6~0.8mm or 0.8~1.0mm or 1.0~1.2mm or 1.2~1.4mm or 1.4~1.6mm or 1.6~1.8mm or 1.8~2.0mm, etc.

[0103] In one example, the locking piece 3 is a step screw, and the screw rod 32 of the locking piece 3 includes a first rod segment and a second rod segment. The two ends of the first rod segment are respectively connected to the screw head 31 of the locking piece 3 and the second rod segment. The diameter of the first rod segment is greater than the diameter of the second rod segment. A limited position surface is formed between the first rod segment and the second rod segment, and a thread is arranged on the second rod end.

[0104] In the embodiment of the present application, the protective member 4 is also provided with an upper extension tube 44, so as to facilitate rapid positioning of the connection hole 41 on the protective member 4 when assembling the grounding structure; and the distance d1 between the first limiting surface 33 and the second limiting surface 34 is set to be slightly smaller than the distance d4 between the free end surface of the upper extension tube 44 and the free end surface of the lower extension tube 43, so that while ensuring that the conductive sheet 2 is tightly locked on the grounding component through the locking piece 3, it is prevented that the locking piece 3 prevents the pre-tightening force on the protective member 4 from being too large, thereby ensuring that the protective member 4 will not be crushed.

[0105] An embodiment of the present application provides a controller, including a metal shell 5 and a grounding structure provided in any of the above embodiments, wherein the grounding structure is connected to the metal shell 5 .

[0106] As described above, the grounding structure includes a circuit board 1, a conductive sheet 2, and a locking member 3. The conductive sheet 2 is connected to the grounding terminal on the circuit board 1. The locking member 3 presses the conductive sheet 2 onto the metal shell 5, and then the circuit board 1 realizes the grounding connection of the metal shell 5 through the conductive sheet 2. In the controller provided in the embodiment of the present application, the locking member 3 is not directly pressed on the circuit board 1, but the circuit board 1 is grounded and connected to the grounding member by pressing the conductive sheet 2, so that the squeezing force between the locking member 3 and the conductive sheet 2 can be increased as much as possible to prevent the locking member 3 from loosening during long-term use, ensure long-term environmental durability and reliability, and ensure that the grounding structure can transmit large currents.

[0107] In one embodiment, see Figure 5 The metal shell 5 includes a shell body 51 and a grounding column 52. The grounding column 52 is arranged on the inner side of the shell body 51. The locking member 3 of the grounding structure is detachably connected to the grounding column 52.

[0108] In one example, a threaded hole is provided on the grounding post 52 , and the grounding post 52 is threadedly connected to the locking element 3 .

[0109] In an example, the number of the grounding posts 52 is more than one, and each grounding post 52 corresponds to a locking member 3 .

[0110] In one example, a mounting structure is provided on the shell body 51, and the mounting structure is used to fix the controller at a location to be installed.

[0111] In the embodiment of the present application, the metal shell 5 includes a shell body 51 and a grounding column 52 to facilitate the connection between the locking element 3 of the grounding structure and the grounding column 52, thereby facilitating the grounding connection between the metal shell 5 and the circuit board 1.

[0112] An embodiment of the present application provides a vehicle, comprising a controller as provided in any of the above embodiments.

[0113] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A grounding structure, characterized in that: include: A circuit board (1), wherein the circuit board (1) is provided with a matching through hole (11) and a grounding terminal; A conductive sheet (2) fixed on the circuit board (1) and electrically connected to the ground terminal, wherein a mounting hole (21) is provided on the conductive sheet (2); A locking piece (3), the locking piece (3) passes through the matching through hole (11) and the mounting hole (21) in sequence, and is used to press the conductive sheet (2) onto the grounding component.

2. The grounding structure according to claim 1, characterized in that: The conductive sheet (2) is arranged on a board surface on one side of the circuit board (1), and the hole diameter of the mounting hole (21) is smaller than the hole diameter of the matching through hole (11).

3. The grounding structure according to claim 1 or 2, characterized in that: The grounding structure further comprises a protective member (4), wherein the protective member (4) is arranged on a side of the circuit board (1) facing away from the conductive sheet (2), and the protective member (4) can be limited on the circuit board (1) by the locking member (3).

4. The grounding structure according to claim 3, characterized in that: The protective member (4) comprises a main body (42) and a lower extension tube (43), the main body (42) being provided with an opening, the lower extension tube (43) being provided on the side of the main body (42) facing the circuit board (1), the lower extension tube (43) being communicated with the opening, the free end of the lower extension tube (43) being in contact with the conductive sheet (2), the locking member (3) being inserted into the lower extension tube (43) through the opening, and the locking member (3) being used to squeeze the lower extension tube (43) onto the conductive sheet (2).

5. The grounding structure according to claim 4, characterized in that: The protective member (4) further comprises an upper extension tube (44), the upper extension tube (44) being arranged on the side of the main body (42) facing away from the circuit board (1), the upper extension tube (44) being connected to the opening, and the locking member (3) passing through the upper extension tube (44).

6. The grounding structure according to claim 4, characterized in that: The length of the lower extension tube (43) from an end connected to the main body (42) to an end away from the main body (42) is greater than the thickness of the circuit board (1).

7. The grounding structure according to claim 3, characterized in that: The locking element (3) is a stepped screw, comprising a screw head (31) and a screw shaft (32) connected to the screw head (31), a first limiting surface (33) being formed between the screw head (31) and the screw shaft (32), a second limiting surface (34) being formed on the screw shaft (32), the first limiting surface (33) being in contact with a side of the protective element (4) facing away from the circuit board (1), and the second limiting surface (34) being in contact with the conductive sheet (2).

8. A controller, characterized in that: It comprises a metal shell (5) and a grounding structure according to any one of claims 1 to 7, wherein the grounding structure is connected to the metal shell (5), and the metal shell (5) is a grounding component.

9. The controller according to claim 8, characterized in that The metal shell (5) comprises a shell body (51) and a grounding column (52), wherein the grounding column (52) is arranged on the inner side surface of the shell body (51), and the locking element (3) of the grounding structure is detachably connected to the grounding column (52).

10. A vehicle, characterized in that: A controller comprising any one of claims 8-9.

Images