Vehicle lamp and vehicle

Abstract

The application provides a vehicle lamp and a vehicle. The vehicle lamp comprises a lamp shell assembly, an elastic member, a circuit board assembly and a pressure connection structure. An installation cavity is formed in the lamp shell assembly. The elastic member is connected to the cavity bottom wall of the installation cavity, and at least part of the elastic member is located in the installation cavity. The circuit board assembly comprises a circuit board and an electronic element. The circuit board has a first board surface and a second board surface arranged oppositely. The electronic element is arranged on the first board surface, and the elastic member supports and abuts against the second board surface. The pressure connection structure is arranged on the lamp shell assembly and abuts against the first board surface. The vehicle lamp can avoid damage to the circuit board assembly to a certain extent, and the lamp shell assembly can be adapted to circuit boards with more thickness ranges.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, and in particular to an automotive lighting fixture and a vehicle using the same lighting fixture. Background Technology

[0002] As an important component of a vehicle, the performance of vehicle lights directly affects the lighting effect and driving safety, and the stable installation of printed circuit board assemblies (PCBAs) is one of the key factors to ensure the reliable operation of vehicle lights.

[0003] In related technologies, the assembly process of indoor small lights uses a combination of screw connections, crimping, multi-point limiting, and snap-fit ​​connections to install and fix the PCBA. Currently, the mainstream installation method is to fix the PCBA inside the lamp housing, using support ribs at the bottom of the housing for support, while the top surface is fixed by a pressing structure on the inner surface of the lampshade or limiting ribs on the side wall of the lamp housing. This structure relies on mechanical extrusion for assembly, requiring precise matching of the rib positions and the PCBA thickness within a confined space.

[0004] However, in the above installation method, the PCBA needs to be pressed down under the limiting rib, which can easily scratch the circuit board during installation and affect the yield of finished products. At the same time, the rigid snap-fit ​​structure can only be used for PCBAs of a single thickness, which has poor versatility. Utility Model Content

[0005] This application provides a vehicle lamp and a vehicle. On the one hand, when installing the circuit board assembly, it can avoid damage to the circuit board assembly to a certain extent. On the other hand, it enables the lamp housing assembly to be adapted to circuit boards with a wider range of thicknesses.

[0006] On one hand, this application provides a vehicle lamp, including a lamp housing assembly, an elastic member, a circuit board assembly, and a pressing structure; the lamp housing assembly has an internal mounting cavity; the elastic member is connected to the bottom wall of the mounting cavity, and at least a portion of the elastic member is located within the mounting cavity; the circuit board assembly includes a circuit board and electronic components, the circuit board has a first plate surface and a second plate surface disposed opposite to each other, the electronic components are disposed on the first plate surface, and the elastic member supports and abuts against the second plate surface; the pressing structure is disposed on the lamp housing assembly, and the pressing structure abuts against the first plate surface.

[0007] In the vehicle lamp provided in this application, an elastic element is connected to the bottom wall of the mounting cavity and supports the second plate surface of the circuit board. This, combined with the pressing structure on the lamp housing assembly, applies pressure to the first plate surface, allowing for stable fixation without relying on rigid compression during the entire installation process. This not only avoids, to some extent, the problem of circuit board scratches caused by forceful pressing in related technologies, improving assembly yield, but also, thanks to the deformation characteristics of the elastic element, allows it to adapt to circuit boards of different thicknesses within its elastic deformation range, thereby enhancing the versatility of the lamp housing assembly.

[0008] In addition, since the elastic element is made of thermally conductive materials such as metal, it can provide elastic support while also serving as a heat conduction path, transferring the heat generated by the circuit board assembly during operation to the lamp housing assembly through the second plate surface, thus expanding the heat dissipation area.

[0009] As an optional implementation, the lamp housing assembly includes a bottom shell and a lampshade, which are engaged to form a mounting cavity; wherein the bottom wall of the bottom shell forms the bottom wall of the mounting cavity, and a pressing structure is provided on the lampshade.

[0010] This not only simplifies the assembly process, allowing the assembly of the lamp housing assembly and the fixing of the circuit board assembly to be completed simultaneously with a single snap-fit ​​action, but more importantly, the separate structure of the bottom shell and the lamp cover provides a larger assembly tolerance space for the elastic components and circuit board assembly in the mounting cavity, thus avoiding stress concentration problems that may occur during the assembly process of an integrated lamp housing to a certain extent.

[0011] As an optional implementation, the lampshade includes a cover plate having a connecting surface disposed facing the bottom wall of the mounting cavity; the pressing structure is a pressing sheet disposed on the connecting surface, the end of the pressing sheet protruding toward the bottom wall of the mounting cavity, and the end of the pressing sheet pressing against the first plate surface.

[0012] In this way, when the lampshade and the base are assembled, the protruding end of the pressure plate acts as a mechanical guide structure, automatically correcting the planar position of the circuit board assembly during the closing process; moreover, the plastic pressure plate can form an anti-slip contact with the surface of the circuit board, which can avoid relative displacement under vibration conditions to a certain extent.

[0013] As an optional implementation, the press sheet has through holes.

[0014] In this way, by appropriately opening holes in key stress areas, the necessary pressing force of the pressing sheet on the first plate surface is maintained, while the risk of shrinkage and deformation of the plastic material during injection molding is reduced, ensuring the dimensional stability of the protrusion height at the end of the pressing sheet. This allows the pressing sheet to maintain a constant contact pressure during long-term use, avoiding the problem of pressing force attenuation to a certain extent.

[0015] As an alternative implementation, the end of the pressing sheet is formed with a pressing plane, which presses against the surface of the first plate.

[0016] The pressing plane and the first plate surface can form a uniform surface contact, which improves the pressure distribution and avoids the problem of local stress concentration on the first plate surface to a certain extent.

[0017] As an optional implementation, a first buckle is provided on the connecting surface, and a locking hole is provided on the inner wall of the bottom shell; the first buckle engages with the locking hole.

[0018] The distributed arrangement of the first buckle and the buckle hole ensures that the joint surface between the lampshade and the base is subjected to uniform force, which can prevent excessive local stress from causing creep of the plastic parts to a certain extent. In addition, the snap-fit ​​connection method can realize quick assembly and disassembly, which can improve assembly efficiency and reduce disassembly and maintenance costs during later use.

[0019] As an optional implementation, a guide block is provided on the connecting surface, and a guide groove is provided on the outer side of the bottom shell. The guide block is located in the guide groove and is connected to the guide groove.

[0020] In this way, during the process of pressing down and installing the lampshade, the guide groove can play a certain guiding role for the guide block, so that the movement direction of the lampshade during the pressing process is relatively fixed, thereby improving the connection efficiency between the lampshade and the base shell.

[0021] As an optional implementation, a limiting rib is provided on the inner wall of the bottom shell, and a limiting groove is provided on the outer periphery of the circuit board to cooperate with the limiting rib, so as to limit the relative position of the circuit board assembly and the lamp housing assembly in the length direction and the width direction of the circuit board.

[0022] In this way, the stability of the circuit board assembly being assembled into the lamp housing assembly can be improved by the cooperation of the limiting ribs and the limiting grooves.

[0023] As an optional implementation, the elastic element is a spring sheet.

[0024] When the lampshade is fully closed, the spring sheet and the pressing structure work together to form a balanced clamping force on the upper and lower surfaces of the circuit board assembly, which can, to some extent, prevent loosening problems that may occur under vibration. At the same time, as a metal component, the spring sheet's thermal conductivity improves the heat dissipation conditions of the circuit board assembly, and by conducting heat to the lamp housing assembly, it compensates for the insufficient heat dissipation area caused by the limited space inside the mounting cavity.

[0025] As an optional implementation, the spring sheet includes a support plate and two support arms; the support plate is embedded in the bottom wall of the mounting cavity; the two support arms are connected to both sides of the support plate, and the two support arms are far apart from each other in the direction from the bottom wall of the mounting cavity to the bottom wall of the mounting cavity away from the mounting cavity; wherein, each support arm has a support surface formed thereon, and the support surface supports and abuts against the second plate surface.

[0026] The metal support plate and the bottom wall of the plastic cavity work together to ensure a tight contact, allowing the heat generated by the circuit board assembly to be quickly conducted to the entire lamp housing assembly through the support surface and support arms. The two support arms adopt a gradually expanding layout, moving away from the connection end near the bottom wall of the cavity towards the free end. When the circuit board assembly is pressed down, the elastic deformation of the two support arms generates a horizontal component force, automatically correcting the planar position deviation of the circuit board assembly.

[0027] As an optional implementation, the support arm includes an inclined plate and an arc-shaped plate; one end of the inclined plate is connected to the support plate, and the other end of the inclined plate extends inclinedly away from the bottom wall of the mounting cavity; the arc-shaped plate is connected to the other end of the inclined plate, and the arc-shaped plate is recessed in the direction away from the bottom wall of the mounting cavity, and the arc-shaped plate has an arc-shaped surface disposed away from the bottom wall of the mounting cavity; wherein, a portion of the arc-shaped surface forms a support surface.

[0028] When the circuit board assembly is pressed down, the tilt angle of the inclined plate gradually decreases with the applied force. This geometric nonlinearity allows the supporting force to increase smoothly, thus avoiding abrupt changes in the supporting force to some extent. Moreover, the extension direction of the inclined plate enables it to achieve a large effective elastic stroke within a limited height, while also providing an ideal force direction for the curved plate.

[0029] On the other hand, this application provides a vehicle, including a body and the aforementioned vehicle lights; wherein the light housing assembly is connected to the body.

[0030] The vehicle provided in this application has high manufacturing efficiency. Attached Figure Description

[0031] Figure 1 A three-dimensional structural diagram of a vehicle lamp provided in an embodiment of this application;

[0032] Figure 2 A schematic diagram of the planar structure of a vehicle lamp provided in an embodiment of this application;

[0033] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0034] Figure 4 A three-dimensional structural diagram of a first partial structure of a vehicle lamp provided in an embodiment of this application;

[0035] Figure 5 A three-dimensional structural diagram of the base shell in a vehicle headlight provided in an embodiment of this application;

[0036] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure from another perspective;

[0037] Figure 7 A three-dimensional structural diagram of the lampshade in the lamp housing provided in the embodiments of this application;

[0038] Figure 8 for Figure 2 A schematic diagram of the planar structure along direction B;

[0039] Figure 9 for Figure 8 A sectional view along the CC direction;

[0040] Figure 10 A three-dimensional structural schematic diagram of the second partial structure of the vehicle lamp provided in the embodiments of this application;

[0041] Figure 11 This is a three-dimensional structural diagram of the spring sheet in the vehicle headlight provided in an embodiment of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Lamp housing assembly; 2. Elastic component; 3. Circuit board assembly; 4. Press-fit structure;

[0044] 10. Headlight; 11. Mounting cavity; 12. Base shell; 13. Lamp cover; 14. Optical pattern; 21. Support plate; 22. Support arm; 23. Connecting short plate; 31. Circuit board; 32. Electronic components; 41. Through hole; 42. Pressing surface; 43. Protrusion;

[0045] 121. Shell portion; 122. Wiring portion; 123. Snap protrusion; 124. Guide groove; 125. Limiting rib; 126. Second snap; 131. Cover plate; 132. First snap; 133. Side plate; 134. Guide block; 221. Support surface; 222. Inclined plate; 223. Arc-shaped plate; 311. First plate surface; 312. Second plate surface; 313. Limiting groove;

[0046] 1211, Snap-in hole; 1212, Slide groove; 1221, Cable bundle cavity; 1311, Connecting surface; 1321, Connecting plate; 1322, Fastening part; 1323, Guide slope; 1331, Snap-in hole; 2231, Arc-shaped surface. Detailed Implementation

[0047] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0048] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0049] In related technologies, the assembly process of indoor small lights typically involves fixing the PCBA inside the lamp housing, with the bottom surface supported by support ribs at the bottom of the housing, while the top surface is secured by a clamping structure on the inner surface of the lampshade or limiting ribs on the side wall of the lamp housing. This structure relies on mechanical extrusion for assembly, requiring precise matching of the rib positions and the PCBA thickness within a confined space. However, in the above installation method, because the PCBA needs to be pressed forcefully under the limiting ribs, the circuit board is easily scratched during installation, affecting the yield rate of the finished product; at the same time, the rigid snap-fit ​​structure can only accommodate PCBAs of a single thickness, resulting in poor versatility.

[0050] Based on this, the present application provides a vehicle lamp and a vehicle, which on the one hand can avoid damage to the PCBA to a certain extent when installing it, and on the other hand can enable the lamp housing assembly to adapt to PCBAs with a wider range of thicknesses.

[0051] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific implementation details.

[0052] Please see Figures 1 to 4 , Figure 1 This is a three-dimensional structural diagram of the vehicle headlight provided in an embodiment of this application. Figure 2 This is a schematic diagram of the planar structure of the vehicle lamp provided in an embodiment of this application. Figure 3 for Figure 2 Cross-sectional view along the AA direction. Figure 4This is a three-dimensional structural diagram of a first partial structure of a vehicle lamp provided in an embodiment of this application. As shown in the figure, this embodiment provides a vehicle lamp 10, including a lamp housing assembly 1, an elastic member 2, a circuit board assembly 3, and a pressing structure 4; the lamp housing assembly 1 has a mounting cavity 11 formed inside; the elastic member 2 is connected to the bottom wall of the mounting cavity 11, and at least a portion of the elastic member 2 is located within the mounting cavity 11; the circuit board assembly 3 includes a circuit board 31 and an electronic component 32, the circuit board 31 has a first plate surface 311 and a second plate surface 312 disposed opposite to each other, the electronic component 32 is disposed on the first plate surface 311, and the elastic member 2 supports and abuts against the second plate surface 312; the pressing structure 4 is disposed on the lamp housing assembly 1, and the pressing structure 4 abuts against the first plate surface 311.

[0053] Typically, LED lights are mounted on the first panel 311.

[0054] In the vehicle lamp 10 provided in this embodiment, the elastic element 2 is connected to the bottom wall of the mounting cavity 11 and supports the second plate surface 312 of the circuit board 31. Together with the pressing structure 4 on the lamp housing assembly 1, it applies pressure to the first plate surface 311, allowing for stable fixing without relying on rigid compression during the entire installation process. This not only avoids, to some extent, the problem of scratches on the circuit board 31 caused by forceful pressing in related technologies, improving assembly yield, but also, thanks to the deformation characteristics of the elastic element 2, it can adapt to circuit boards 31 of different thicknesses within the elastic deformation range, thereby enhancing the versatility of the lamp housing assembly 1.

[0055] In addition, since the elastic element 2 is made of thermally conductive materials such as metal, it can provide elastic support and also serve as a heat conduction path, transferring the heat generated by the circuit board assembly 3 during operation to the lamp housing assembly 1 through the second plate surface 312, thereby expanding the heat dissipation area.

[0056] In some specific embodiments, the lamp housing assembly 1 includes a bottom shell 12 and a lampshade 13, which are engaged to form a mounting cavity 11. The bottom wall of the bottom shell 12 forms the bottom wall of the mounting cavity 11, and a pressing structure 4 is disposed on the lampshade 13. The bottom wall of the bottom shell 12 directly constitutes the bottom wall of the mounting cavity 11, providing a stable mounting base for the elastic element 2. The pressing structure 4 is disposed on the lampshade 13 so that when the bottom shell 12 and the lampshade 13 are engaged, the pressing structure 4 can naturally form a clamping relationship with the elastic element 2.

[0057] This not only simplifies the assembly process, allowing the assembly of the lamp housing assembly 1 and the fixing of the circuit board assembly 3 to be completed simultaneously with a single snap-fit ​​action, but more importantly, the separate structure of the bottom shell 12 and the lamp cover 13 provides a larger assembly tolerance space for the elastic element 2 and the circuit board assembly 3 in the mounting cavity 11, which to a certain extent avoids the stress concentration problem that may occur during the assembly of the integrated lamp housing.

[0058] Furthermore, when the lampshade 13 is engaged with the base shell 12, the pressing structure 4 will automatically apply a uniform pressing force to the circuit board assembly 3 as the lampshade 13 moves downward. This follow-up pressing method ensures that the circuit board assembly 3 is subjected to balanced force, which can avoid damage to electronic components 32 caused by excessive local stress in related technologies to a certain extent. Moreover, when the circuit board assembly 3 needs to be repaired or replaced in the later stage, the constraint of the pressing structure 4 can be released simply by separating the lampshade 13, which makes it convenient to repair or replace the circuit board assembly 3 in the mounting cavity 11.

[0059] In other words, when assembling the vehicle lamp 10 provided in this embodiment, simply place the circuit board assembly 3 into the mounting cavity 11 and press the lamp cover 13. The fixation can be completed by the self-adaptation of the elastic element 2 and the pressing structure 4, thereby improving production efficiency.

[0060] Please continue to combine Figure 5 and Figure 6 , Figure 5 This is a three-dimensional structural diagram of the base shell in the vehicle headlight provided in an embodiment of this application. Figure 6 for Figure 5 A three-dimensional structural schematic diagram from another perspective. As shown in the figure, in some embodiments, the bottom shell 12 includes a shell portion 121 and a wiring portion 122. The shell portion 121 and the lampshade 13 enclose a mounting cavity 11. The wiring portion 122 has a wiring cavity 1221 that communicates with the mounting cavity 11. The wiring harness connected to the circuit board assembly 3 can pass through the side plate of the shell portion 121 and be electrically connected to other modules through the wiring cavity 1221. Here, other module types are not limited.

[0061] Please continue to combine Figures 7 to 9 , Figure 7 This is a three-dimensional structural diagram of the lampshade in the lamp housing provided in the embodiments of this application. Figure 8 for Figure 2 A schematic diagram of the planar structure along direction B. Figure 9 for Figure 8 A cross-sectional view along the CC direction. Further, the lampshade 13 includes a cover plate 131, which has a connecting surface 1311 facing the bottom wall of the mounting cavity 11; the pressing structure 4 is a pressing piece disposed on the connecting surface 1311, with its end protruding towards the bottom wall of the mounting cavity 11 and pressing against the first plate surface 311. Thus, when the lampshade 13 and the base shell 12 are fully engaged, the protruding end of the pressing piece acts as a mechanical guide structure, automatically correcting the planar position of the circuit board assembly 3 during the closing process; moreover, the plastic pressing piece forms an anti-slip contact with the surface of the circuit board 31, to a certain extent preventing relative displacement under vibration conditions.

[0062] In addition, the protruding shape of the end of the pressing piece forms an integral cantilever beam structure with the connecting surface 1311. When the end of the pressing piece presses against the first plate surface 311, the cantilever beam structure will produce a slight elastic deformation. This deformation can absorb assembly tolerances and maintain constant contact pressure.

[0063] It should be noted that the pressure plate and the elastic element 2 form a mechanical fit. The elastic element 2 provides the main support reaction force, while the pressure plate, through its structural characteristics, evenly transmits the downward pressure of the lampshade 13 to a specific area of ​​the circuit board assembly 3, thereby avoiding stress concentration caused by point contact to a certain extent.

[0064] It is understandable that, in order to enhance the pressing effect of the pressing tabs on the circuit board 31, multiple spaced pressing tabs can be provided on opposite sides of the connection surface 1311. Here, there is no specific limitation on the number of pressing tabs.

[0065] In a specific embodiment of this invention, multiple pressure plates are distributed on opposite sides of the circuit board 31 along its width direction. The width direction of the circuit board 31 can be found in [reference needed]. Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 9 The YY axis direction in the diagram.

[0066] To achieve the snap-fit ​​connection between the lampshade 13 and the base shell 12, in some specific embodiments, a first buckle 132 is provided on the connecting surface 1311, and a snap hole 1211 is provided on the inner wall of the shell portion 121; the first buckle 132 engages with the snap hole 1211. When the lampshade 13 and the base shell 12 are mated, the first buckle 132 undergoes elastic deformation under the action of the guide slope 1323 until it is fully engaged in the snap hole 1211 and then returns to its original shape.

[0067] Moreover, the distributed arrangement of the first buckle 132 and the buckle hole 1211 ensures that the joint surface between the lampshade 13 and the bottom shell 12 is subjected to uniform force, which can prevent excessive local stress from causing creep of the plastic parts to a certain extent. In addition, the snap-fit ​​connection method can realize quick assembly and disassembly, which can reduce the disassembly and maintenance costs during later use while improving assembly efficiency.

[0068] Specifically, the first buckle 132 includes a connecting plate 1321 and a fastening part 1322. One end of the connecting plate 1321 is connected to the connecting surface 1311, and the fastening part 1322 is connected to the other end of the connecting plate 1321. A guide slope 1323 is formed on the fastening part 1322, and the fastening part 1322 is engaged with the buckle hole 1211.

[0069] In some optional embodiments, to improve the engagement efficiency between the first latch 132 and the latch hole 1211, a sliding groove 1212 can be provided on the side of the latch hole 1211 facing away from the bottom wall of the mounting cavity 11, which slides and engages with the latching part 1322. The bottom wall of the sliding groove 1212 is inclined. In this way, when the lampshade 13 is pressed down and installed onto the base shell 12, it can guide the movement of the first latch 132 to improve assembly efficiency.

[0070] Of course, in order to improve the connection reliability between the lampshade 13 and the bottom shell 12, multiple first buckles 132 can be provided on the opposite sides of the connection surface 1311 at intervals, and the arrangement direction of the first buckles 132 is the same as the arrangement direction of the pressing sheet, and the first buckles 132 and the pressing sheet are staggered.

[0071] It is understandable that if the movement of the lamp cover 13 can be guided during the assembly process of the lamp cover 13 and the base shell 12, the assembly efficiency of the vehicle lamp 10 provided in this embodiment can be further improved. Based on this, in some optional embodiments, a guide block 134 is provided on the connecting surface 1311, and a guide groove 124 is provided on the outer side of the base shell 12. The guide block 134 is located in the guide groove 124 and is connected to the guide groove 124. In this way, during the process of pressing down and installing the lamp cover 13, the guide groove 124 can play a certain guiding role for the guide block 134, so that the movement direction of the lamp cover 13 during the pressing process is relatively fixed, thereby improving the connection efficiency between the lamp cover 13 and the base shell 12.

[0072] To ensure the sealing of the mounting cavity 11, the lampshade 13 also includes side plates 133 disposed on opposite sides of the cover plate 131. One side plate 133 is located on the outside of the shell portion 121, and the side plate 133 has a snap-fit ​​hole 1331. A snap-fit ​​protrusion 123 is connected to the shell portion 121, and the snap-fit ​​protrusion 123 engages with the snap-fit ​​hole 1331. The other side plate 133 abuts against the shell portion 121. The mounting cavity 11 is formed by the cover plate 131, the two side plates 133, and the shell portion 121. This results in a better sealing of the mounting cavity 11.

[0073] like Figure 7 and Figure 9 As shown, in order to improve the uniformity of LED light output, an optical pattern 14 can be integrally formed on one side of the bottom wall of the mounting cavity 11 on the surface of the cover plate 131.

[0074] To improve the pressing performance of the pressing sheet on the first plate surface 311, in some embodiments, a through hole 41 is provided on the pressing sheet. Thus, by appropriately creating a hole in the critical stress area, the necessary pressing force of the pressing sheet on the first plate surface 311 is maintained, while reducing the risk of shrinkage and deformation of the plastic material during injection molding, ensuring the dimensional stability of the protrusion height at the end of the pressing sheet. This allows the pressing sheet to maintain a constant contact pressure during long-term use, to a certain extent avoiding the problem of pressing force attenuation.

[0075] Furthermore, the width of the pressing piece gradually decreases in the direction from near the cover plate 131 to near the bottom wall of the mounting cavity 11. That is, the wider cross-section near the cover plate 131 has greater structural strength, while the narrower cross-section near the pressing end provides the necessary flexible deformation capacity. When the lampshade 13 is engaged with the bottom shell 12, the narrow end of the pressing piece first contacts the first plate surface 311 and begins to deform elastically. As the closing stroke continues, the gradually increasing cross-sectional stiffness causes the pressing force to rise steadily, eventually reaching the designed clamping force when fully closed.

[0076] To avoid localized stress concentration on the first plate surface 311 to some extent, a pressing surface 42 is formed at the end of the pressing sheet, which presses against the first plate surface 311. The pressing surface 42 and the first plate surface 311 can form a uniform surface contact, which improves the pressure distribution and avoids localized stress concentration on the first plate surface 311 to some extent.

[0077] Specifically, the end of the crimping piece has a protrusion 43 that protrudes toward the bottom wall of the mounting cavity 11, and a crimping plane 42 is formed at the end of the protrusion 43 that faces the bottom wall of the mounting cavity 11.

[0078] In some embodiments, to ensure the position of the circuit board assembly 3 is determined after installation and to improve its stability, a limiting rib 125 is provided on the inner wall of the housing portion 121, and a limiting groove 313 that cooperates with the limiting rib 125 is provided on the outer periphery of the circuit board 31 to limit the relative position of the circuit board assembly 3 and the lamp housing assembly 1 in the length and width directions of the circuit board 31. Specifically, limiting ribs 125 are provided on both sides of the housing portion 121 along the width direction of the circuit board 31 and on one side along the length direction of the circuit board 31. Thus, the cooperation between the limiting rib 125 and the limiting groove 313 can improve the stability of the circuit board assembly 3 when assembled into the lamp housing assembly 1.

[0079] It should be noted that the length direction of the aforementioned circuit board 31 is parallel to... Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 as well as Figure 8The XX axis direction is consistent.

[0080] Regarding the selection of the aforementioned elastic element 2, it can be a spring sheet. During assembly, the elastic properties of the spring sheet make the installation of the circuit board assembly 3 smoother, achieving reliable fixation without the need for precise control of the crimping force. When the lampshade 13 is fully closed, the spring sheet and the crimping structure 4 work together to form a balanced clamping force on the upper and lower surfaces of the circuit board assembly 3, thus avoiding loosening problems that may occur under vibration.

[0081] Meanwhile, as a metal component, the spring sheet improves the heat dissipation conditions of the circuit board assembly 3 by conducting heat to the lamp housing assembly 1, thus compensating for the insufficient heat dissipation area caused by the limited internal space of the mounting cavity 11.

[0082] Please continue to combine Figure 10 and Figure 11 , Figure 10 This is a three-dimensional structural diagram of the second partial structure of the vehicle lamp provided in the embodiment of this application. Figure 11 This is a three-dimensional structural diagram of the spring sheet in the vehicle headlight provided in an embodiment of this application. In some specific embodiments, the spring sheet includes a support plate 21 and two support arms 22; the support plate 21 is embedded in the bottom wall of the mounting cavity 11; the two support arms 22 are connected to both sides of the support plate 21, and the two support arms 22 are far apart from each other in the direction from the bottom wall of the mounting cavity 11 to the bottom wall of the mounting cavity 11; wherein, each support arm 22 has a support surface 221 formed thereon, and the support surface 221 supports and abuts against the second plate surface 312.

[0083] The metal support plate 21 and the bottom wall of the plastic cavity ensure a tight contact between them, allowing the heat generated by the circuit board assembly 3 to be quickly conducted to the entire lamp housing assembly 1 through the support surface 221 and the support arm 22. The two support arms 22 adopt a gradually expanding layout, gradually moving away from the connection end near the bottom wall of the cavity towards the free end. When the circuit board assembly 3 is pressed down, the elastic deformation of the two support arms 22 will generate a horizontal component force, automatically correcting the planar position deviation of the circuit board assembly 3.

[0084] It should be noted that during the injection molding process of the bottom shell 12, the support plate 21 will be injection molded together with the bottom shell 12.

[0085] Furthermore, the support arm 22 includes an inclined plate 222 and an arcuate plate 223; one end of the inclined plate 222 is connected to the support plate 21, and the other end of the inclined plate 222 extends inclinedly away from the bottom wall of the mounting cavity 11; the arcuate plate 223 is connected to the other end of the inclined plate 222, and the arcuate plate 223 is recessed in the direction away from the bottom wall of the mounting cavity 11, and the arcuate plate 223 has an arcuate surface 2231 disposed away from the bottom wall of the mounting cavity 11; wherein, a portion of the arcuate surface 2231 forms the support surface 221.

[0086] When the circuit board assembly 3 is pressed down, the tilt angle of the inclined plate 222 gradually decreases with the force applied. This geometric nonlinearity allows the supporting force to increase steadily, thus avoiding abrupt changes in the supporting force to a certain extent. Moreover, the extension direction of the inclined plate 222 allows it to obtain a large effective elastic stroke within a limited height, while providing an ideal force direction for the curved plate 223.

[0087] Furthermore, when the circuit board assembly 3 begins to contact the curved surface 2231, the smaller curvature area at the top of the curved surface 2231 first forms a point contact. As the downward pressure increases, the contact area gradually expands along the curved surface, and finally the support surface 221 and the second board surface 312 are bonded together. In this way, the stability of the circuit board assembly 3 after assembly can be improved.

[0088] To achieve the connection between the inclined plate 222 and the support plate 21, the spring sheet also includes two connecting short plates 23. The two connecting short plates 23 are arranged one-to-one with the two support arms 22, and the connecting short plates 23 are connected between the end of the support plate 21 and the corresponding support arm 22. In this way, the structural stiffness of the spring sheet can be improved, and excessive deformation of the spring sheet can be avoided to a certain extent.

[0089] This embodiment also provides a vehicle, including a body and the aforementioned headlight 10; wherein, the headlight housing assembly 1 is connected to the body. A second clip 126 is connected to the wiring harness 122, and the second clip 126 engages with the body to mount the headlight 10 to the body.

[0090] It should be noted that the specific structure of the headlight 10 has been described in detail in the above embodiments, and will not be repeated here.

[0091] Furthermore, the vehicle provided in this embodiment should also include other modules or components that enable the vehicle to function normally, which will not be described in detail here.

[0092] The vehicle provided in this embodiment can improve vehicle manufacturing efficiency by adopting the aforementioned headlights 10.

[0093] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A vehicle light, characterized in that, include: The lamp housing assembly has an internal mounting cavity; An elastic element is connected to the bottom wall of the mounting cavity, and at least a portion of the elastic element is located within the mounting cavity; A circuit board assembly includes a circuit board and electronic components. The circuit board has a first plate surface and a second plate surface disposed opposite to each other. The electronic components are disposed on the first plate surface, and the elastic element supports and abuts against the second plate surface. as well as A pressing structure is disposed on the lamp housing assembly, and the pressing structure abuts against the first plate surface.

2. The vehicle light according to claim 1, characterized in that, The lamp housing assembly includes a base shell and a lamp cover, the base shell and the lamp cover being engaged to enclose and form the mounting cavity; The bottom wall of the bottom shell forms the bottom wall of the mounting cavity, and the pressing structure is disposed on the lampshade.

3. The vehicle light according to claim 2, characterized in that, The lampshade includes a cover plate having a connecting surface facing the bottom wall of the mounting cavity; The pressing structure is a pressing sheet disposed on the connecting surface. The end of the pressing sheet protrudes toward the bottom wall of the mounting cavity, and the end of the pressing sheet abuts against the first plate surface.

4. The vehicle light according to claim 3, characterized in that, The pressing plate has a through hole; and / or, The end of the pressing sheet has a pressing plane, which presses against the first plate surface.

5. The vehicle light according to claim 3, characterized in that, A first buckle is provided on the connecting surface, and a snap hole is provided on the inner wall of the bottom shell; The first buckle engages with the card hole.

6. The vehicle light according to claim 3, characterized in that, A guide block is provided on the connecting surface, and a guide groove is provided on the outer side of the bottom shell. The guide block is located within the guide groove and is connected to the guide groove; and / or, The inner wall of the bottom shell is provided with a limiting rib, and the outer periphery of the circuit board is provided with a limiting groove that cooperates with the limiting rib, so as to limit the relative position of the circuit board assembly and the lamp housing assembly in the length direction and the width direction of the circuit board.

7. The vehicle lamp according to any one of claims 1 to 6, characterized in that, The elastic element is a spring sheet.

8. The vehicle light according to claim 7, characterized in that, The spring sheet includes: A support plate is embedded in the bottom wall of the mounting cavity; and Two support arms are connected to both sides of the support plate, and the two support arms are spaced apart from each other in the direction from the bottom wall of the mounting cavity to the bottom wall of the mounting cavity away from the mounting cavity; Each of the support arms has a support surface formed thereon, and the support surface supports and abuts against the second plate surface.

9. The vehicle light according to claim 8, characterized in that, The support arm includes: An inclined plate, one end connected to the support plate, and the other end extending inclinedly away from the bottom wall of the mounting cavity; and An arc-shaped plate is connected to the other end of the inclined plate. The arc-shaped plate is recessed in the direction away from the bottom wall of the mounting cavity. The arc-shaped plate has an arc-shaped surface that is away from the bottom wall of the mounting cavity. The arc-shaped surface portion forms the supporting surface.

10. A vehicle, characterized in that, Includes the vehicle body and the vehicle lights as described in any one of claims 1 to 9; The lamp housing assembly is connected to the vehicle body.

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