Die casting, vehicle-mounted backlight module and vehicle-mounted display device

Abstract

The application relates to the technical field of vehicle-mounted backlight modules, and particularly provides a die casting, a vehicle-mounted backlight module and a vehicle-mounted display device. The die casting comprises a die casting bottom plate, a die casting side frame plate integrally formed at the edge of the die casting bottom plate, a side frame outer peripheral surface and a side frame top surface facing away from the die casting bottom plate, a plurality of clamping grooves arranged on the side frame outer peripheral surface and used for connecting buckles of a machine shell, and a plurality of guide inner recesses arranged one by one in correspondence with the clamping grooves, wherein the guide inner recesses are located on the side frame outer peripheral surface and in the region between the side frame top surface and the clamping grooves, and the guide inner recesses are used for providing a deformation space for the buckles of the machine shell and for positioning and guiding the buckles of the machine shell into the clamping grooves. When the die casting is assembled into the machine shell, the guide inner recesses can provide a space for avoiding the buckles on the machine shell, and the buckles of the machine shell are guided into the clamping grooves, so that the assembly of the vehicle-mounted backlight source is facilitated, and the structure of the vehicle-mounted backlight source and the machine shell is protected.

Description

Technical Field

[0001] This application relates to the field of automotive backlight module technology, and more particularly to a die-casting part, an automotive backlight module, and an automotive display device. Background Technology

[0002] As the screen size of automotive display devices continues to increase, the structural design of automotive backlight modules faces higher stability requirements. Existing automotive backlight modules generally use die-cast parts as key structural components for their functional parts. Simultaneously, the automotive display device also includes a housing that mates with the die-cast parts; the assembly of the automotive backlight module is completed through the connection between the housing and the die-cast parts.

[0003] However, existing housings and die-cast parts are usually assembled by snap fasteners, but the snap fasteners of existing die-cast parts and housings are inconvenient to align. At the same time, in order to ensure the connection strength, when the snap fasteners enter the matching slots on the die-cast parts, the snap fasteners on the housings are excessively interference-prone with the side walls of the die-cast parts, making the snap fasteners on the housings prone to breakage.

[0004] Therefore, existing technologies have defects and shortcomings, and need further improvement and development. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a die-casting part, an automotive backlight module and an automotive display device, in order to solve the problem that the die-casting part of the automotive backlight module is easily damaged when it is assembled onto the housing.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: a die-casting part for an automotive backlight module, wherein the die-casting part comprises: Die-cast base plate; A die-cast side frame plate, which is integrally formed on the edge of the die-cast base plate, and the die-cast side frame plate has an outer peripheral surface of the side frame and a top surface of the side frame facing away from the die-cast base plate; A plurality of slots are provided on the outer peripheral surface of the side frame, and the plurality of slots are used for connecting the housing with a buckle; A plurality of guide recesses are provided, each corresponding to a plurality of slots, and all of the guide recesses are located on the outer peripheral surface of the side frame and in the area between the top surface of the side frame and the slots. The guide recesses are used to provide deformation space for the buckles of the housing and to position and guide the buckles of the housing into the slots.

[0007] Optionally, the guide recess includes a first guide portion and a second guide portion, the second guide portion being located between the first guide portion and the slot; the first guide portion and the second guide portion are smoothly connected.

[0008] Optionally, both the first guide portion and the second guide portion are configured as arc guide portions, and the radius of curvature of the first guide portion is smaller than the radius of curvature of the second guide portion.

[0009] Optionally, both the first guide portion and the second guide portion are configured as inclined guide portions, and the inclination angle of the second guide portion is smaller than the inclination angle of the second guide portion.

[0010] Optionally, the first guide portion is configured as an arc guide portion, and the second guide portion is configured as an inclined guide portion; The first guide portion is configured as a sloped guide portion, and the second guide portions are both configured as arc guide portions.

[0011] Optionally, the extension width of the first guide portion is set to decrease gradually along the direction from the top surface of the side frame to the die-cast base plate.

[0012] Optionally, the depth of the first guide portion decreases gradually along the direction from the top surface of the side frame to the die-cast base plate.

[0013] Optionally, the direction from the top surface of the side frame to the die-cast base plate is the height direction, and the first guide portion and the second guide portion are provided with deformation grooves along the two edges perpendicular to the height direction.

[0014] Another technical solution adopted by this application to solve the technical problem is as follows: a vehicle-mounted backlight module, wherein the vehicle-mounted backlight module includes the die-cast part as described above.

[0015] Another technical solution adopted by this application to solve the technical problem is as follows: an in-vehicle display device, wherein the in-vehicle display device includes the in-vehicle backlight module as described above.

[0016] Beneficial effects: This application provides a die-casting part, an automotive backlight module, and an automotive display device. The die-casting part has several guide recesses on the outer peripheral surface of the side frame that correspond one-to-one with the slots. The guide recesses are located in the area between the top surface of the side frame and the slots. This allows the die-casting part to be installed into the housing, where the guide recesses provide clearance for the clips and guide the clips of the housing into the slots. This facilitates the assembly of the automotive backlight and protects the structure of the automotive backlight and the housing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the die-cast part of the vehicle backlight module provided in this application; Figure 2 It is provided in this application Figure 1 Enlarged diagram of point A in the diagram; Figure 3 This is a three-dimensional cross-sectional view of the die-cast part of the vehicle backlight module provided in this application; Figure 4 It is provided in this application Figure 3 Enlarged diagram of point B in the image; Figure 5 This is a three-dimensional cross-sectional view of the vehicle backlight module provided in this application; Figure 6 This is a partial enlarged cross-sectional view of the vehicle-mounted display device provided in this application; Explanation of reference numerals in the attached figures: 1. Vehicle-mounted backlight module; 10. Die-cast part; 11. Die-cast base plate; 12. Die-cast side frame plate; 13. Slot; 14. Guide recess; 121. Side frame outer peripheral surface; 122. Side frame top surface; 141. First guide part; 142. Second guide part; 143. Deformation groove; 20. Housing; 21. Clip. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0019] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] Please combine Figures 1 to 6 The first embodiment of this application provides a die-casting part 10, which is used on a vehicle-mounted backlight module 1 of an automotive display device. The die-casting part 10 is used to support the functional components of the vehicle-mounted backlight module 1. The die-casting part 10 includes a die-casting base plate 11, a die-casting side frame plate 12, a plurality of slots 13, and a plurality of guide recesses 14. The die-casting base plate 11 and the die-casting side frame plate 12 constitute the main structure of the die-casting part 10. The die-casting side frame plate 12 is integrally formed at the edge of the die-casting base plate 11. A receiving space for accommodating, fixing, and protecting the functional components of the vehicle-mounted backlight module 1 is provided between the die-casting side frame plate 12 and the die-casting base plate 11. The die-casting side frame plate 12 has an outer peripheral surface 121 and a top surface 122. The top surface 122 is the end face of the die-casting side frame plate 12 facing away from the die-casting base plate 11. Several slots 13 are provided on the outer peripheral surface 121 of the side frame. These slots 13 are used to connect the buckles 21 of the housing 20. The buckles and slots 13 are matched one-to-one, thus connecting the die-cast part 10 to the housing. The housing is located inside the vehicle and is typically the bottom shell or middle frame of an in-vehicle display device. Several guide recesses 14 are correspondingly provided with the slots 13. The guide recesses 14 are located on the outer peripheral surface 121 of the side frame and in the area between the top surface 122 of the side frame and the slots 13. These guide recesses 14 provide deformation space for the housing's buckles and guide the buckles into the slots 13. During assembly, the buckles on the housing first contact the guide recesses 14 to prevent excessive compression and damage, and are gradually guided into the slots 13 during assembly.

[0022] In some embodiments, the guide recess 14 includes a first guide portion 141 and a second guide portion 142, with the second guide portion 142 located between the first guide portion 141 and the slot 13; the first guide portion 141 and the second guide portion 142 are smoothly connected. That is, during assembly, the housing's latch passes sequentially through the first guide portion 141 and the second guide portion 142, and then enters the slot 13 under the continuous guidance of the first guide portion 141 and the second guide portion 142; the smooth transition between the first guide portion 141 and the second guide portion 142 ensures a smooth transition when the latch moves from the first guide portion 141 to the second guide portion 142, avoiding stress and further ensuring the safety of the latch and the ease of assembly of the vehicle backlight module 1.

[0023] In some embodiments, both the first guide portion 141 and the second guide portion 142 are configured as arc-shaped guide portions, and the radius of curvature of the first guide portion 141 is smaller than the radius of curvature of the second guide portion 142. That is, both the first guide portion 141 and the second guide portion 142 are configured as arc-shaped structures. At the same time, by controlling the radius of curvature of the first guide portion 141 to be smaller than the radius of curvature of the second guide portion 142, the concave depth of the first guide portion 141 is made deeper, which can quickly guide and capture the buckle, ensuring improved assembly efficiency. It also reduces the friction between the buckle and the first guide portion 141 and avoids excessive compression deformation of the buckle at the beginning of assembly. Meanwhile, the second guide portion 142 can smoothly and accurately guide the buckle into the slot 13.

[0024] In other embodiments, both the first guide portion 141 and the second guide portion 142 are configured as inclined guide portions, and the inclination angle of the second guide portion 142 is smaller than the inclination angle of the first guide portion 141. This allows the first guide portion 141 to quickly guide and capture the buckle, ensuring improved assembly efficiency. It also reduces friction between the buckle and the first guide portion 141 and prevents excessive compression deformation of the buckle at the start of assembly. Meanwhile, the second guide portion 142 can smoothly and accurately guide the buckle into the slot 13.

[0025] In other embodiments, the first guide portion 141 is configured as an arc-shaped guide portion, and the second guide portion 142 is configured as a sloped guide portion; or, the first guide portion 141 is configured as a sloped guide portion, and the second guide portion 142 is configured as an arc-shaped guide portion. This allows for rapid assembly of the die-cast part 10 with the housing via the first guide portion 141 and the second guide portion 142.

[0026] In other embodiments, the extension width of the first guide portion 141 decreases gradually along the direction from the top surface 122 of the side frame to the die-cast base plate 11. This maximizes the width of the opening of the first guide portion 141 away from the second guide portion 142, allowing the first guide portion 141 to quickly guide and capture the buckle, thus ensuring improved assembly efficiency. Simultaneously, setting the width of the first guide portion 141 to decrease gradually further guides the buckle.

[0027] In some embodiments, the depth of the first guide portion 141 decreases gradually along the direction from the top surface 122 of the side frame to the die-cast base plate 11. This provides more clearance when the buckle just enters the first guide portion 141, effectively preventing the buckle from being rapidly compressed during assembly. The gradient change in depth effectively guides the buckle while providing it with room to adapt, thus preventing damage.

[0028] In some embodiments, the direction from the top surface 122 of the side frame to the die-cast base plate 11 is the height direction, and deformation grooves 143 are formed at the two edges of the first guide portion 141 and the second guide portion 142 perpendicular to the height direction. By providing deformation grooves 143, when the buckle abuts against the first guide portion 141, the die-cast side frame plate 12 at the first guide portion 141 is concave and deformed, reducing the deformation of the buckle.

[0029] The second embodiment of this application provides a vehicle-mounted backlight module 1, wherein the vehicle-mounted backlight module 1 includes a die-cast part 10 as described in the first embodiment of this application. When the vehicle-mounted backlight module 1 is assembled into a car, it enables quick installation of the vehicle-mounted backlight module 1 onto the clip 21 on the car's housing 20, and protects the structure of the vehicle-mounted backlight module 1 and the clip 21 on the housing 20.

[0030] The third embodiment of this application provides an in-vehicle display device, wherein the in-vehicle display device includes the in-vehicle backlight module 1 as described in the second embodiment of this application above. This avoids damage to the connection structure between the in-vehicle backlight module 1 and the housing 20 during assembly, preventing damage to the in-vehicle display device while the vehicle is moving, and thus extending the service life of the in-vehicle display device.

[0031] In summary, this application provides a die-casting part, an automotive backlight module, and an automotive display device. The die-casting part includes a die-cast base plate; a die-cast side frame plate integrally formed on the edge of the die-cast base plate, the die-cast side frame plate having an outer peripheral surface and a top surface of the side frame facing away from the die-cast base plate; a plurality of slots, all disposed on the outer peripheral surface of the side frame, the slots being used to connect the buckles of the housing; and a plurality of guide recesses, each corresponding to one of the slots, the guide recesses being located on the outer peripheral surface of the side frame and in the area between the top surface of the side frame and the slots, the guide recesses providing deformation space for the buckles of the housing and guiding the buckles of the housing into the slots. This allows the die-cast parts to be assembled into the housing, with the guide recessed part providing space for the clips and guiding the housing clips into the slots. This facilitates the assembly of the automotive backlight and protects the structure of both the automotive backlight and the housing.

[0032] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A die-casting part for use in automotive backlight modules, characterized in that, The die-cast part includes: Die-cast base plate; A die-cast side frame plate, which is integrally formed on the edge of the die-cast base plate, and the die-cast side frame plate has an outer peripheral surface of the side frame and a top surface of the side frame facing away from the die-cast base plate; A plurality of slots are provided on the outer peripheral surface of the side frame, and the plurality of slots are used for connecting the housing with a buckle; A plurality of guide recesses are provided, each corresponding to a plurality of slots, and all of the guide recesses are located on the outer peripheral surface of the side frame and in the area between the top surface of the side frame and the slots. The guide recesses are used to provide deformation space for the buckles of the housing and to position and guide the buckles of the housing into the slots.

2. The die-casting part according to claim 1, characterized in that, The guide recess includes a first guide portion and a second guide portion, with the second guide portion located between the first guide portion and the slot; the first guide portion and the second guide portion are smoothly connected.

3. The die-casting part according to claim 2, characterized in that, Both the first guide portion and the second guide portion are configured as arc guide portions, and the radius of curvature of the first guide portion is smaller than the radius of curvature of the second guide portion.

4. The die-casting part according to claim 2, characterized in that, Both the first guide portion and the second guide portion are configured as inclined guide portions, and the inclination angle of the second guide portion is smaller than the inclination angle of the second guide portion.

5. The die-casting part according to claim 2, characterized in that, The first guide portion is configured as an arc guide portion, and both second guide portions are configured as inclined guide portions; The first guide portion is configured as a sloped guide portion, and the second guide portions are both configured as arc guide portions.

6. The die-casting part according to claim 2, characterized in that, The extension width of the first guide portion decreases gradually along the direction from the top surface of the side frame to the die-cast base plate.

7. The die-casting part according to claim 2, characterized in that, The depth of the first guide portion decreases gradually along the direction from the top surface of the side frame to the die-cast base plate.

8. The die-casting part according to claim 2, characterized in that, The direction from the top surface of the side frame to the die-cast base plate is the height direction, and the first guide part and the second guide part have deformation grooves at their two edges perpendicular to the height direction.

9. A vehicle-mounted backlight module, characterized in that, The vehicle-mounted backlight module includes a die-cast part as described in any one of claims 1-8.

10. A vehicle-mounted display device, characterized in that, The vehicle-mounted display device includes the vehicle-mounted backlight module as described in claim 9.

Images