PCB assembly and vehicle

Abstract

The utility model discloses a PCB assembly and a vehicle. The PCB assembly comprises a housing, a PCB body and a terminal. The shell comprises a first cavity and a limiting plate, the PCB body comprises a containing groove and a contact piece, the PCB body is inserted into the first cavity in the first direction, the limiting plate is matched with the containing groove to achieve limiting, the terminal comprises a hanging part and a function part, the terminal is contained in the first cavity, and the function part is matched with the containing groove to achieve limiting. The PCB body is provided with a hanging part and a functional part, the hanging part abuts against the shell in the first direction, the side, away from the PCB body, of the hanging part abuts against the shell, and the functional part abuts against the contact piece and is electrically connected with the contact piece, so that the PCB body is clamped between the terminal and the shell. The PCB assembly does not need additional welding equipment, the processing difficulty is low, parts can be replaced, and the utilization efficiency and machinability of the PCB are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a PCB assembly and a vehicle. Background Art

[0002] At present, the fixing methods between the board-side connector and the PCB generally include SMT (Surface mounting technology) welding and DIP (Dual in-line package) welding. SMT welding is to mount the nearly horizontal solder feet of the board-side connector to the solder surface on the PCB (printed circuit board), and then use wave soldering or reflow soldering to achieve a fixed connection between the board-side connector and the PCB. The DIP welding form is to insert the nearly vertical solder feet of the board-side connector into the soldered vias on the PCB, and then use wave soldering or reflow soldering to achieve a fixed connection between the board-side connector and the PCB.

[0003] The existing board-side connector and PCB welding fixing technology requires expensive welding equipment in practical applications. During the welding process, high temperature will cause the performance degradation of the board-side connector shell material, oxidation of the plug terminals and warping of the PCB. In addition, when parts are damaged, they cannot be replaced because they have been fixed by welding. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that a welding device is required to fix a PCB and a connector. To this end, the application provides a PCB assembly that does not require additional welding equipment, has low processing difficulty, and can replace parts, thereby saving energy, reducing costs, extending the service life of the connector, and expanding the range of material options.

[0005] According to an embodiment of the utility model, the PCB assembly comprises: a housing, a PCB body and a terminal. The housing comprises a first chamber and a limiting plate, the PCB body comprises a receiving groove and a contact sheet, the PCB body is inserted into the first chamber along a first direction, the limiting plate cooperates with the receiving groove to achieve limiting, the terminal comprises a hanging part and a functional part, the terminal is accommodated in the first chamber, the hanging part abuts against the housing along the first direction, and the side of the hanging part facing away from the PCB body abuts against the housing, the functional part abuts against the contact sheet and achieves electrical connection, so that the PCB body is clamped between the terminal and the housing.

[0006] In one embodiment, the housing is provided with a hanging platform and a fixing portion, the hanging platform is arranged on the limiting plate, the fixing portion is used to accommodate the terminal, the limiting plate and the fixing portion are spaced apart and form a first limiting groove, and the first limiting groove is used to accommodate the PCB body.

[0007] In one embodiment, the first limiting groove is provided with a first limiting surface, and the first limiting surface is used to limit the PCB body from being over-inserted into the housing.

[0008] In one embodiment, the limiting plate is provided with an unlocking operation portion, and the hanging platform and the receiving groove can be separated by pressing the unlocking operation portion.

[0009] In one embodiment, the limiting plate is provided with a first guiding inclined surface along the opposite direction of the first direction, and the first guiding inclined surface is used for guiding the shell to be inserted into the PCB body.

[0010] In one embodiment, the terminal is provided with a first hanging surface, and the shell cavity is provided with a first hanging matching surface, and the first hanging surface and the first hanging matching surface are hung and matched to limit the terminal from being separated from the shell.

[0011] In one embodiment, the first chamber is provided with a second guide slope and a second limit surface, the terminal is provided with a matching limit surface, the second guide slope is used to facilitate pushing the terminal into the housing, and the second limit surface cooperates with the matching limit surface to limit excessive insertion of the terminal into the housing.

[0012] In one embodiment, the housing is provided with a second limiting groove, the terminal is provided with a protrusion, and the second limiting groove cooperates with the protrusion to limit the terminal from moving in directions other than the first direction.

[0013] In one embodiment, the terminal is provided with a main body portion and a second connecting portion, and the main body portion is connected to the hanging portion by the second connecting portion.

[0014] In one embodiment, the protrusion is provided with an auxiliary surface, and an external force acts on the auxiliary surface to insert the terminal into the housing.

[0015] In one embodiment, the PCB body has a sixth guiding slope to facilitate the insertion of the PCB body into the housing.

[0016] In one embodiment, the PCB body has an avoidance groove, and the avoidance groove can avoid the housing.

[0017] In one embodiment, the PCB assembly includes a connector.

[0018] In one embodiment, the connector is provided with a self-locking cantilever, the self-locking cantilever is provided with a self-locking hanging platform, the self-locking hanging platform is provided with a second hanging surface, the shell is provided with a second hanging mating surface, and the second hanging surface and the second hanging mating surface cooperate to fix the connector and the shell.

[0019] In one embodiment, the connector is provided with a protective rib, and the protective rib is spaced apart from the self-locking cantilever.

[0020] In one embodiment, the connector is provided with a guide portion, and the guide portion can guide the connector to be inserted into the housing.

[0021] In one embodiment, the terminal is provided with a fifth guiding slope to facilitate the insertion of the terminal into the connector.

[0022] The vehicle according to the utility model comprises the above connector assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a schematic diagram of the PCB assembly structure according to an embodiment of the utility model.

[0025] Figure 2 It is a schematic diagram of the shell structure according to an embodiment of the utility model.

[0026] Figure 3 yes Figure 2 A schematic diagram of the structure of the middle shell from a second perspective.

[0027] Figure 4 for Figure 2 Schematic diagram of the structure of the middle shell from the third perspective.

[0028] Figure 5 for Figure 4 AA cross-sectional view of the middle shell.

[0029] Figure 6 for Figure 4 Cross-sectional view of the middle shell from BB's perspective.

[0030] Figure 7 It is a schematic diagram of the terminal structure according to an embodiment of the utility model.

[0031] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle terminal from the second perspective.

[0032] Fig. 9 It is a schematic diagram of the structure of the housing and the terminal in the embodiment of the utility model.

[0033] Fig.10 It is a schematic diagram of the PCB body structure according to an embodiment of the utility model.

[0034] Fig.11 It is a schematic diagram of the connector structure according to an embodiment of the utility model.

[0035] Reference numerals:

[0036] Shell 1, fixing portion 11, first chamber 12, self-locking hanging platform accommodating groove 13, second hanging matching surface 131, rib plate 14, limiting plate 15, first guiding inclined surface 151, first limiting groove 16, first limiting surface 161, terminal hanging platform process hole 17, first hanging matching surface 171, first self-locking cantilever 18, first connecting portion 19,

[0037] The unlocking operation part 20, the limiting rib plate 21, the spacing groove 22, the accommodating space 23, the avoiding surface 231, the second limiting groove 24, the second guiding inclined surface 241, the second limiting surface 242, the hanging platform 25, the third guiding inclined surface 251, the third limiting surface 252,

[0038] Terminal 3, plug portion 31, fourth guide slope 311, main body portion 32, protruding portion 33, matching limit surface 331, fifth guide slope 332, auxiliary surface 333, transition portion 34, functional portion 35, second connecting portion 36, hanging portion 37, first hanging surface 371,

[0039] PCB body 5, contact piece 51, receiving groove 52, third limiting groove 53, sixth guiding inclined surface 531, fourth limiting surface 532, avoiding groove 54,

[0040] Connector 7 , second self-locking cantilever 71 , self-locking hanging platform 72 , second hanging surface 721 , protection rib 73 , second terminal hole 74 , guide portion 75 . DETAILED DESCRIPTION

[0041] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0044] In the description of the present invention, "plurality" means two or more.

[0045] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0046] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0047] Please refer to the following Figure 1-11 A PCB assembly according to an embodiment of the present invention is described.

[0048] The PCB assembly includes a shell 1, a PCB body and a terminal. The shell 1 includes a first chamber 12 and a limiting plate 15, the PCB body includes a receiving groove 52 and a contact piece 51, the PCB body is inserted into the first chamber 12 along a first direction, the limiting plate 15 cooperates with the receiving groove 52 to achieve limiting, the terminal includes a hanging portion 37 and a functional portion 35, the terminal is accommodated in the first chamber 12, the hanging portion 37 abuts against the shell 1 along the first direction, and the side of the hanging portion 37 facing away from the PCB body abuts against the shell 1, the functional portion 35 abuts against the contact piece 51 and achieves electrical connection, so that the PCB body is clamped between the terminal and the shell 1. The terminal is accommodated or at least partially accommodated in the first chamber 12, and the accommodation mode is that a terminal hole is opened in the first chamber 12, and the number of terminals that can be accommodated is not less than 1.

[0049] In addition, the PCB body 5 is provided with at least one contact piece 51, which is connected to the printed circuit inside the PCB body 5 and contacts the functional part 35 of the terminal 3 to achieve electrical connection. The PCB body 5 is provided with a receiving groove 52, which is used to accommodate the hanging platform 25 of the shell 1. The receiving groove 52 is provided with a hanging surface 521, which abuts against the third limiting surface 252 of the shell hanging platform 25 to limit the separation of the shell 1 and the PCB 5. Among them, the third limiting surface 252 can be set as a vertical surface, or it can be set as an inclined surface to enhance the holding force between the shell 1 and the PCB body 5. The PCB body 5 is provided with a third limiting groove 53. The third limiting groove 53 cooperates with the rib plate 14 of the shell 1 to limit the relative movement of the shell 1 and the PCB 5 in the left and right directions. The third limiting groove 53 is provided with a sixth guiding inclined surface 531 to facilitate the rib plate 14 to enter the third limiting groove 53. The third limiting groove 53 is provided with a fourth limiting surface 532 , and the fourth limiting surface 532 abuts against the first limiting surface 161 of the housing 1 to limit the housing 1 from being over-inserted into the PCB 5 .

[0050] In one embodiment of the utility model, when the housing 1 is inserted into the PCB body 5, the first limiting groove 16 accommodates the PCB body 5 under the guidance of the first guiding inclined surface 151 to achieve vertical limiting; after sliding forward for a distance, the rib plate 14 enters the third limiting groove 53 under the guidance of the sixth guiding inclined surface 531 to achieve horizontal limiting; after sliding forward for a distance, the first self-locking cantilever 18 deflects downward under the guidance of the third guiding inclined surface 251 of the hanging platform 25, and continues to slide forward until the hanging platform 25 enters the accommodating groove 52, and the fourth limiting surface 532 and the hanging surface 521 of the PCB body 5 are limited between the first limiting surface 161 and the third limiting surface 252 of the housing 1 to achieve vertical limiting. When the housing 1 is inserted into the PCB 5, the functional part 35 of the plug terminal 3 is elastically deformed under the extrusion of the PCB 5, and then slides on the PCB 5 until it contacts the contact piece 51.

[0051] In one embodiment of the present utility model, the housing 1 is provided with a hanging platform 25 and a fixing portion 11, the hanging platform 25 is arranged on the limiting plate 15, the fixing portion 11 is used to accommodate the terminal, the limiting plate 15 and the fixing portion 11 are arranged at intervals to form a first limiting groove 16, and the first limiting groove 16 is used to accommodate the PCB body. It should be understood that the limiting plate 15 and the fixing portion 11 are arranged at intervals to form the first limiting groove 16 is only one embodiment of the present utility model, and in other embodiments, the spacing may not be required as long as a holding space can be provided for the PCB body.

[0052] In one embodiment as shown in the figure, the housing 1 is provided with a rib 14. The rib 14 extends downward along the side of the first chamber 12, and is used to support the first chamber 12 and the limit plate 15, and to limit the relative movement of the housing 1 and the PCB 5 in a specific direction. At least one terminal hanging platform process hole 17 is provided at the front end of the fixing portion 11 of the housing 1, which is used to form a first hanging mating surface 171. The terminal hanging platform process hole 17 can also be used as a disassembly hole for the plug terminal 3.

[0053] In one embodiment of the present invention, the first limiting groove 16 is provided with a first limiting surface 161, and the first limiting surface 161 is used to limit the excessive insertion of the PCB body into the housing 1. It should be noted that limiting the PCB body by the first limiting surface 161 is only one embodiment of the present invention, and other limiting methods can be used in other embodiments as long as the PCB can be prevented from being excessively inserted into the housing 1.

[0054] In one embodiment of the present utility model, the limit plate 15 is provided with an unlocking operation part 20, and the hanging platform 25 can be separated from the receiving groove 52 by pressing the unlocking operation part 20. In addition, the limit plate 15 is also provided with a first self-locking cantilever 18. The first self-locking cantilever 18 and the unlocking operation part 20 are connected to the limit plate 15 through the first connecting part 19. When the first limit groove 16 of the shell 1 is inserted into the PCB body 5, the first self-locking cantilever 18 is deflected under the guidance of the third guide slope 251 of the hanging platform 25, and the shell 1 and the PCB body 5 slide relative to each other along the terminal axis until locked. When the PCB body needs to be disassembled and repaired, the hanging platform 25 of the first self-locking cantilever 18 can be deflected downward by pressing the unlocking operation part 20, and the lock can be removed. It should be understood that unlocking by pressing the unlocking operation part is only one embodiment of the present utility model. In other embodiments, locking or unlocking can also be performed by setting a buckle.

[0055] In one embodiment of the present utility model, the limiting plate 15 is provided with a first guiding inclined surface 151 in the opposite direction of the first direction, and the first guiding inclined surface 151 is used to guide the PCB body to be inserted into the housing 1. The provision of the first guiding inclined surface 151 facilitates the insertion of the PCB body into the first limiting groove 16, thereby realizing the locking of the PCB assembly.

[0056] In one embodiment of the present utility model, the terminal is provided with a first hanging surface 371, and the housing 1 is provided with a first hanging mating surface 171, and the first hanging surface 371 and the first hanging mating surface 171 are hung and mated to limit the terminal from being separated from the housing 1. The first hanging mating surface 171 can be set as a vertical surface, or it can be set as an inclined surface to enhance the terminal holding force.

[0057] In one embodiment of the utility model, the first chamber 12 is provided with a second guiding inclined surface 241 and a second limiting surface 242, and the terminal is provided with a matching limiting surface 331, the second guiding inclined surface 241 is used to facilitate the terminal to be pushed into the shell 1, and the second limiting surface 242 cooperates with the matching limiting surface 331 to limit the terminal 3 from being excessively inserted into the shell 1. Among them, the third limiting surface 252 can be set as a vertical surface, and can also be set as an inclined surface in order to enhance the holding force between the shell 1 and the PCB body 5. In the embodiment as shown in the figure, there is an avoidance surface 231 at the front end of the accommodating space 23. The avoidance surface 231 is spaced apart from the transition portion 34 of the plug terminal 3.

[0058] In one embodiment of the present invention, the housing 1 is provided with a second limiting groove 24, and the terminal 3 is provided with a protrusion 33, and the second limiting groove 24 cooperates with the protrusion 33 to limit the movement of the terminal 3 in directions other than the first direction. The second limiting groove 24 is provided on at least one side of the accommodating space 23. It should be understood that in the embodiment of the present invention as shown in the figure, the protrusion 33 of the terminal 3 is axially symmetrically arranged, which is only one embodiment of the present invention, as long as the second limiting groove 24 and the protrusion 33 can cooperate and achieve the limitation of the specific direction of the terminal 3.

[0059] In one embodiment of the utility model, the terminal 3 is provided with a main body 32 and a second connecting portion 36, and the terminal 3 is connected to the hanging portion 37 by the second connecting portion 36. Therefore, the terminal 3 is provided with a plug portion 31, a main body 32, a protruding portion 33, a transition portion 34, a functional portion 35, a second connecting portion 36 and a hanging portion 37. Among them, the main body 32 connects the plug portion 31 and the functional area transition portion 34. The transition portion 34 connects the main body 32 and the functional portion 35, and the transition portion 34 is spaced apart from the accommodating space 23 of the housing 1. Among them, the second connecting portion 36 is spaced apart from the main body 32. In the embodiment of the utility model as shown in the figure, the hanging portion 37 is connected to the main body 32 through the second connecting portion 36, and is substantially flush with the axial direction of the terminal 3, so as to increase the contact area between the first hanging surface 371 and the first hanging mating surface 171. In one embodiment of the utility model, the second connecting portion 36 and the hanging portion 37 are elastically deformable. The hanging portion 37 may also be arranged to be flush with the second connecting portion 36 , but the hanging holding force between the terminal 3 and the housing 1 is slightly lower than the state in which the hanging portion 37 and the terminal 3 are substantially flush in the axial direction.

[0060] In one embodiment of the present invention, the protrusion 33 is provided with an auxiliary surface 333, and an external force acts on the auxiliary surface 333 to insert the terminal 3 into the housing 1. Meanwhile, the front end of the protrusion 33 is provided with a matching limiting surface 331 and a fifth guiding inclined surface 332.

[0061] During the specific plug-in process, when the terminal 3 is inserted into the shell 1, the second connecting portion 36 and the hanging portion 37 of the terminal 3 are elastically deformed under force, and the protrusion 33 slides forward in the second limiting groove 24 until the plug terminal 3 is inserted into place, and the second connecting portion 36 and the hanging portion 37 rebound upward and enter the terminal hanging platform process hole 17, and the mating limiting surface 331 and the first hanging surface 371 of the plug terminal 3 are restricted between the second limiting surface 242 and the first hanging mating surface 171 of the shell 1, thereby realizing axial limitation of the terminal.

[0062] In one embodiment of the present invention, the PCB body has a sixth guiding inclined surface 531 to facilitate the insertion of the PCB body into the housing 1, wherein the PCB body has an avoidance groove 54, and the avoidance groove 54 can avoid the housing 1. In the embodiment as shown in the figure, the avoidance groove 54 is a frame-shaped structure, but the avoidance groove 54 of this structure is only one embodiment of the present invention, and the specific structure of the avoidance groove 54 is not limited, as long as it does not interfere with the housing 1.

[0063] In one embodiment of the utility model as shown in the figure, the PCB assembly includes a connector 7. The PCB assembly of the utility model is easy to manufacture, assemble and disassemble, and can avoid the degradation of the board end shell material performance, terminal oxidation and PCB warping caused by high temperature welding, save energy, reduce costs, and expand the range of material options.

[0064] In one embodiment of the utility model, the connector is provided with a second self-locking cantilever 71, the second self-locking cantilever is provided with a self-locking hanging platform 72, the self-locking hanging platform 72 is provided with a second hanging surface 721, the housing 1 is provided with a second hanging mating surface 131, and the second hanging surface 721 and the second hanging mating surface 131 cooperate to fix the connector and the housing 1. It should be understood that the matching of the connector and the housing 1 by the self-locking hanging platform 72 is only one embodiment of the utility model. In the embodiment of the utility model, the matching can also be achieved by welding, pasting, etc., as long as the connector and the housing 1 can be locked without falling off. In addition, the second hanging mating surface 131 can be set as a vertical surface, and can also be set as an inclined surface to enhance the retention force of the connector.

[0065] In one embodiment of the utility model, the connector 7 is provided with a protective rib 73, and the protective rib 73 is spaced apart from the second self-locking cantilever 71, and the protective rib 73 is used to prevent mis-locking. In one embodiment of the utility model, the first chamber 12 of the housing 1 is provided with a limiting rib 21, and the limiting rib 21 is at least partially spaced apart from the side of the first chamber 12 to form a spacing groove 22. The limiting rib 21 is spaced apart from the self-locking protective rib 73 of the connector 7, and has the function of auxiliary positioning and connector error prevention. The spacing groove 22 can cooperate with the connector 7 to assist in positioning and connector error prevention, or it can only serve as a material removal groove to reduce shrinkage. When the housing 1 is matched with the connector 7, the protective rib 73 is limited between the limiting ribs 21 of the housing 1.

[0066] In addition, the connector 7 is provided with at least one second terminal hole 74 for accommodating and protecting the second terminal. Therefore, during the mating process between the connector 7 and the housing 1 and the PCB board, the second self-locking cantilever 71 and the self-locking hanging platform 72 are deflected by force, and after being inserted into the appropriate position, the second self-locking cantilever 71 will rebound, and the self-locking hanging platform 72 will enter the self-locking hanging platform receiving groove 13 to achieve the hanging limit, at which time the plug part 31 of the terminal 3 and the second terminal are mated with each other to achieve electrical connection.

[0067] In one embodiment of the utility model, the connector is provided with a guide portion 75, and the guide portion 75 can guide the connector to be inserted into the housing 1. In one embodiment as shown in the figure, the terminal 3 is provided with a fourth guide slope 311, which facilitates the insertion of the terminal 3 into the connector, and the plug portion 31 is inserted into the second terminal hole 74 of the connector 7 to achieve electrical connection.

[0068] The utility model also provides a vehicle, which includes the PCB assembly of the above embodiment. The vehicle of the utility model can ensure assembly efficiency and facilitate replacement of parts, extend the service life of the interface, and improve user experience.

[0069] In summary, the PCB assembly of the embodiment of the utility model comprises: a housing 1, a PCB body and a terminal 3. The housing 1 comprises a first chamber 12 and a limiting plate 15, the PCB body comprises a receiving groove 52 and a contact piece 51, the PCB body is inserted into the first chamber 12 along a first direction, the limiting plate 15 cooperates with the receiving groove 52 to achieve limiting, the terminal 3 comprises a hanging portion 37 and a functional portion 35, the terminal 3 is accommodated in the first chamber 12, the hanging portion 37 abuts against the housing 1 along the first direction, and the side of the hanging portion 37 away from the PCB body abuts against the housing 1, the functional portion 35 abuts against the contact piece 51 and achieves electrical connection, so that the PCB body is clamped between the terminal 3 and the housing 1. The PCB assembly can provide a signal transmission function, is easy to manufacture, assemble and disassemble, can avoid the degradation of the performance of the board end housing material caused by high temperature welding, the oxidation of the terminal and the warping and deformation of the PCB, saves energy, reduces costs, and expands the range of material options. The automobile includes the PCB assembly in the above-mentioned embodiment, which can ensure the assembly efficiency of the automobile and facilitate the replacement of parts, extend the service life of the interface, and improve the user experience.

[0070] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0071] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A PCB assembly, characterized in that: include: The housing comprises a first chamber and a limiting plate; A PCB body, comprising a receiving groove and a contact sheet, wherein the PCB body is inserted into the first cavity along a first direction, and the limiting plate cooperates with the receiving groove to achieve limiting; The terminal includes a hanging portion and a functional portion, wherein the terminal is accommodated in the first cavity, the hanging portion abuts against the shell along the first direction, and the side of the hanging portion facing away from the PCB body abuts against the shell, and the functional portion abuts against the contact piece to achieve electrical connection, so that the PCB body is clamped between the terminal and the shell.

2. A PCB assembly according to claim 1, characterized in that: The housing is provided with a hanging platform and a fixing part, the hanging platform is arranged on the limiting plate, the fixing part is used to accommodate the terminal, the limiting plate and the fixing part are spaced apart and form a first limiting groove, and the first limiting groove is used to accommodate the PCB body.

3. A PCB assembly according to claim 2, characterized in that: The first limiting groove is provided with a first limiting surface, and the first limiting surface is used to limit the PCB body from being over-inserted into the housing.

4. A PCB assembly according to claim 2, characterized in that: The limiting plate is provided with an unlocking operation part, and the hanging platform and the containing groove can be separated by pressing the unlocking operation part.

5. A PCB assembly according to claim 1, characterized in that: The limiting plate is provided with a first guiding inclined surface along the opposite direction of the first direction, and the first guiding inclined surface is used for guiding the shell to be inserted into the PCB body.

6. A PCB assembly according to claim 1, characterized in that: The terminal is provided with a first hanging surface, and the shell cavity is provided with a first hanging matching surface, and the first hanging surface and the first hanging matching surface are hung and matched to limit the terminal from being separated from the shell.

7. A PCB assembly according to claim 1, characterized in that: The first chamber is provided with a second guiding inclined surface and a second limiting surface, the terminal is provided with a matching limiting surface, the second guiding inclined surface is used to facilitate pushing the terminal into the housing, and the second limiting surface cooperates with the matching limiting surface to limit excessive insertion of the terminal into the housing.

8. A PCB assembly according to claim 1, characterized in that: The housing is provided with a second limiting groove, the terminal is provided with a protruding portion, and the second limiting groove cooperates with the protruding portion to limit the terminal from moving in directions other than the first direction.

9. A PCB assembly according to claim 1, characterized in that: The terminal is provided with a main body and a second connecting portion, and the main body is connected to the hanging portion by the second connecting portion.

10. A PCB assembly according to claim 8, characterized in that: The protrusion is provided with an auxiliary surface on which an external force acts to insert the terminal into the housing.

11. A PCB assembly according to claim 1, characterized in that: The PCB body has a sixth guiding slope to facilitate the insertion of the PCB body into the housing.

12. A PCB assembly according to claim 1, characterized in that: The PCB body has an avoidance groove, and the avoidance groove can avoid the shell.

13. A PCB assembly according to claim 1, characterized in that: The PCB assembly includes a connector.

14. A PCB assembly according to claim 13, characterized in that: The connector is provided with a second self-locking cantilever, the self-locking cantilever is provided with a self-locking hanging platform, the self-locking hanging platform is provided with a second hanging surface, the shell is provided with a second hanging matching surface, and the second hanging surface and the second hanging matching surface cooperate to fix the connector and the shell.

15. A PCB assembly according to claim 14, characterized in that: The connector is provided with a protective rib, and the protective rib is spaced apart from the self-locking cantilever.

16. A PCB assembly according to claim 13, characterized in that: The connector is provided with a guide portion, and the guide portion can guide the connector to be inserted into the housing.

17. A PCB assembly according to claim 13, characterized in that: The terminal is provided with a fifth guiding inclined surface to facilitate the insertion of the terminal into the connector.

18. A vehicle, characterized in that: A PCB assembly comprising any one of claims 1-17.

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