T-box housing and vehicle-mounted t-box
By designing a combination of limiting hooks and fixing holes in the T-BOX shell, the cracking problem at the junction of the metal heat sink and plastic under high temperature was solved, thus improving the structural stability and strength of the shell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FULSCIENCE AUTOMOTIVE ELECTRONICS CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-26
AI Technical Summary
In the prior art, the T-BOX shell cracks at the boundary due to the difference in thermal expansion coefficients at the junction of the metal heat sink and the plastic under high temperature conditions, which affects the structural strength.
Design a T-BOX shell structure, wherein the inner sidewall of the mounting shell extends with an extension and a limiting part, and the heat dissipation plate is provided with a limiting groove and a fixing hole. The thermal expansion of the mounting shell is limited by the cooperation of the limiting hook and the fixing hole to prevent cracking.
It effectively prevents cracking at the junction of the mounting shell and the heat sink, ensuring the structural stability and strength of the T-BOX shell at high temperatures.
Smart Images
Figure CN224290217U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive technology, and in particular to T-BOX housings and vehicle-mounted T-BOXs. Background Technology
[0002] The current automotive market places increasing emphasis on end-user experience, leading to more demanding functionalities for in-vehicle T-BOXs (short for Telematics BOX). This increases the power consumption of the T-BOX, resulting in greater heat generation (higher temperature). However, the performance of the chips integrated into the PCBA within the T-BOX decreases with increasing temperature. To address this heat dissipation issue, most in-vehicle T-BOXs currently employ an inlay injection molding process for their casing design; combined with... Figure 1 and Figure 2 As shown, a metal heat sink is embedded in the injection-molded housing.
[0003] Specifically, inlay injection molding involves embedding the metal heat sink 2' into the injection mold during the injection molding process, followed by the injection of plastic. After the plastic cools, the metal heat sink is encased within the plastic (shell 1'). While this design works without issues at room temperature, the coefficient of thermal expansion of the shell 1' is much higher than that of metal (e.g., the coefficient of thermal expansion of PC+ABS is about four times that of Al). Therefore, at high temperatures, the deformation of the plastic portion within the shell 1' is greater than that of the metal heat sink. This manifests on the surface of the T-BOX shell as cracking at the boundary between the metal heat sink 2' and the plastic portion within the shell 1', thus affecting the structural strength.
[0004] Therefore, there is an urgent need for T-BOX housings and vehicle-mounted T-BOXs to address the technical problems existing in current technologies to some extent. Utility Model Content
[0005] The purpose of this application is to provide a T-BOX housing and a vehicle-mounted T-BOX, which to a certain extent solves the technical problem of cracking at the boundary between the metal heat sink and the plastic under high temperature conditions caused by the inlay injection molding process used in the prior art for T-BOX housing, thus affecting the structural strength of the T-BOX housing.
[0006] This application provides a T-BOX housing, including a mounting shell and a heat sink;
[0007] The inner sidewall of the mounting housing has an extension portion extending toward the interior of the mounting housing at a predetermined position, and a mounting portion is formed between the extension portion and the sidewall of the mounting housing protruding from the extension portion; the heat sink is mounted on the mounting portion;
[0008] On the extension, a limiting portion with a gradually expanding structure extending from the side wall of the mounting housing toward the interior of the mounting housing is provided on the heat sink corresponding to the position of the limiting portion and adapted to the limiting portion.
[0009] In the above technical solution, both the limiting part and the limiting groove are trapezoidal structures.
[0010] In the above technical solution, further, there are multiple limiting parts, and the multiple limiting parts are arranged at intervals along the circumferential edge of the mounting shell.
[0011] In the above technical solution, the mounting part is further provided with a fixing part, and the heat sink is provided with a fixing hole corresponding to the position of the fixing part.
[0012] In the above technical solution, further, there are multiple fixing parts, and the multiple fixing parts are respectively disposed between adjacent limiting parts on the edge in the length direction and the edge in the width direction of the extension.
[0013] In the above technical solution, both the fixing part and the fixing hole are oval in shape.
[0014] In the above technical solution, the height of the mounting shell protruding from the extension is equal to the thickness of the heat sink.
[0015] In the above technical solution, the T-BOX housing further includes a main body; the mounting shell is fixed to the main body by a fastener.
[0016] In the above technical solution, the fixing component is a fixing screw, and the four corner ends of the mounting shell are fixed to the main body by the fixing screw.
[0017] This application provides a vehicle-mounted T-BOX, including the aforementioned T-BOX housing.
[0018] Compared with the prior art, this application has the following beneficial effects:
[0019] This application provides a T-BOX housing, including a mounting shell and a heat sink;
[0020] The inner sidewall of the mounting housing has an extension portion extending toward the interior of the mounting housing at a predetermined position, and a mounting portion is formed between the extension portion and the sidewall of the mounting housing protruding from the extension portion; the heat sink is mounted on the mounting portion;
[0021] On the extension, a limiting portion with a gradually expanding structure extending from the side wall of the mounting housing toward the interior of the mounting housing is provided on the heat sink corresponding to the position of the limiting portion and adapted to the limiting portion.
[0022] In summary, when the heat sink is installed on the mounting housing, the limiting hook is engaged with the limiting groove. Therefore, if the circumferential limiting portion of the mounting housing experiences outward thermal expansion, it will be engaged and restrained by the limiting hook formed by the limiting groove. This prevents and limits the outward thermal expansion of the circumferential limiting portion of the mounting housing, thus preventing cracks from forming at the mating surface between the heat sink and the mounting housing.
[0023] This application also provides a vehicle-mounted T-BOX, including the aforementioned T-BOX housing. The beneficial effects of this frame structure are not detailed here. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of a T-BOX shell in the prior art;
[0026] Figure 2 An exploded view of the T-BOX casing in the prior art;
[0027] Figure 3 This is a structural schematic diagram of the T-BOX shell provided in this application;
[0028] Figure 4 for Figure 3 Enlarged view of point A in the image;
[0029] Figure 5 This is a schematic diagram of the structure of the main body in the T-BOX shell provided in this application;
[0030] Figure 6 for Figure 5 Enlarged view of point B in the image;
[0031] Figure 7 A schematic diagram of the heat sink in the T-BOX housing provided in this application from a first-view perspective;
[0032] Figure 8 for Figure 7Enlarged view of point C in the image;
[0033] Figure 9 A schematic diagram of the heat sink in the T-BOX housing provided in this application from a second perspective;
[0034] Figure 10 for Figure 9 Enlarged view of point D in the image;
[0035] Figure 11 This is a schematic diagram of the structure of the mounting shell in the T-BOX housing provided in this application.
[0036] Reference numerals: 1'-House casing; 2'-Heat sink;
[0037] 1-Mounting shell; 101-Extension; 102-Mounting part; 103-Limiting part; 104-Limiting protrusion; 105-Fixing part; 106-Fixing limiting plate; 107-First bent edge; 108-Second bent edge; 109-First short edge; 110-First long edge; 111-First waistline; 112-Second waistline; 113-Limiting groove; 114-Fixing frame; 115-First fixing frame edge; 116-Second fixing frame edge; 117-Bending part; 118-Long edge; 119-Short edge;
[0038] 2-Heat dissipation plate; 201-Limiting groove; 202-Fixing hole; 203-Fixing plate; 204-Open end; 205-Second long edge; 206-First limiting edge; 207-Second limiting edge; 208-Limiting hook; 209-Corresponding part; 210-First corresponding edge; 211-Second corresponding edge; 212-Long side; 213-Short side;
[0039] 3-Main body; 301-Fixing component; 302-Fixing screw. Detailed Implementation
[0040] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.
[0041] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.
[0042] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.
[0043] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.
[0044] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.
[0045] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., swung 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.
[0046] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0047] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.
[0048] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.
[0049] Example 1
[0050] This embodiment provides a T-BOX housing. Regardless of whether it is at room temperature or high temperature, the mounting shell 1 and the heat sink 2 on the T-BOX housing can be stably fixed together. This effectively avoids the problem and risk of cracking at the joint between the mounting shell 1 and the heat sink 2 in the T-BOX housing, thereby ensuring the structural stability of the T-BOX housing. The following describes... Figures 3-11 As shown, the specific structure of the T-BOX shell is described in detail.
[0051] Combination Figure 5 As shown, the T-BOX housing includes a mounting shell 1, which has a cuboid structure, such that the mounting shell 1 has two parallel long edges 118 and two parallel short edges 119. See also... Figure 5 It can be seen that the long edge 118 and the two short edges 119 connected thereto are connected by a bend. Specifically, the bend 117 includes a first bend edge 107 and a second bend edge 108 perpendicularly connected to the first bend edge 107, with the corner formed by the first bend edge 107 and the second bend edge 108 facing inwards towards the mounting housing 1. In other words, combined with Figure 5 As shown, the bent part is in a recessed state.
[0052] Furthermore, the two long edges 118 of the mounting shell 1 extend to opposite sides at predetermined positions with extension portions 101, and the two short edges 119 of the mounting shell 1 also extend to opposite sides at predetermined positions with extension portions 101. The predetermined positions refer to half the height of the sidewall of the mounting shell 1; that is, assuming the sidewall height of the mounting shell 1 is H, the extension portion 101 is located at 1 / 2H of the sidewall of the mounting shell 1. Additionally, the extension portion 101 refers to an extension plate; that is, the two long edges 118 of the mounting shell 1 extend to opposite sides at predetermined positions with extension plates, and the two short edges 119 of the mounting shell 1 also extend to opposite sides at predetermined positions with extension plates. Furthermore, an extension plate also extends to the inner sidewall of the aforementioned bend at a predetermined position, that is, the extension plate surrounds the inner sidewall of the mounting shell 1.
[0053] Furthermore, since the extension plate extends out at half the height of the mounting shell 1, a mounting portion 102 is formed between the extension plate and the side wall of the mounting shell 1 located on the extension plate.
[0054] Furthermore, the mounting housing 1 also includes a fixing frame 114, which includes two mutually perpendicular first fixing frame edges 114 and second fixing frame edges 116. The end of the first fixing frame edge 114 facing away from the second fixing edge is perpendicularly connected to the first bent edge 107, and the end of the second fixing frame edge 116 facing away from the first fixing frame edge 115 is perpendicularly connected to the second bent edge 108. That is, the first fixing frame edge 114, the first bent edge 107, the second fixing frame edge 116, and the second bent edge will form a sealed frame structure.
[0055] Combination Figure 7 As shown, the T-BOX housing also includes a heat sink 2. The heat sink 2 has a rectangular structure, meaning it includes two relatively parallel long sides 212 and two relatively parallel short sides 213. Furthermore, the length of the long side 212 of the heat sink 2 is the same as the length of the long edge 118 of the mounting shell 1, and the length of the short side 213 of the heat sink 2 is the same as the length of the short edge 119 of the mounting shell 1.
[0056] Furthermore, the heat sink 2 has a corresponding portion 209 at the corresponding bend, the corresponding portion 209 having a first corresponding edge 210 corresponding to the first bend edge 107 and a second corresponding edge 211 corresponding to the second bend edge 108.
[0057] Furthermore, the heat sink also includes a fixing plate 203, which is connected to the frame structure.
[0058] Combination Figure 1 , Figure 2As shown, during installation, the circumferential edge of the heat sink 2 is mounted on the mounting portion 102, and the fixing plate 203 of the heat sink 2 passes through the bend and is fixed to the aforementioned frame structure. Furthermore, the bend is pressed onto the corresponding portion 209. Additionally, the housing also includes a main body 3; the main body 3 is box-shaped. The fixing plate 203 of the heat sink 2 is fixed to the main body 3 by a fastener 301. Optionally, the fastener is a fixing screw 302, and the four corner ends of the heat sink 2 are fixed to the main body 3 by the fixing screw 302. In summary, by pressing the corresponding portion 209 with the bend, the heat sink 2 and the mounting shell 1 are fixed together; furthermore, by using the frame structure to limit the position of the fixing plate 203 and by using the fixing screws 302 to fix the fixing plate 203 to the main body 3, the heat sink 2 and the mounting shell 1 are fixed to the main body 3.
[0059] Combination Figure 5 and Figure 6 As shown, a limiting part 103 with a gradually expanding structure extends from the side wall of the mounting shell 1 to the interior of the mounting shell 1 on the inner side wall of the mounting shell 1 above the extension part 101 plate; a limiting groove 201 adapted to the limiting part 103 is provided on the heat dissipation plate 2 at the position corresponding to the limiting part 103.
[0060] Reference Figure 6 and Figure 8Optionally, both the limiting part 103 and the limiting groove 201 are trapezoidal structures. For the limiting part 103, it is preferably a limiting protrusion 104; the trapezoidal limiting part 103 includes a first short edge 109, a first long edge 110, a first waist edge 111 and a second waist edge 112; wherein the first short edge 109 is formed on the long edge 118 of the mounting shell 1. The first waist edge 111 and the second waist edge 112 are formed at a preset angle (between 30° and 60°) to the long edge 118 on the extension plate. This preset angle between the first waist edge 111 and the second waist edge 112 and the long edge 118 of the mounting shell 1 creates a limiting groove 113 between the first waist edge 111 and the long edge 118 of the mounting shell 1, and similarly, creates a limiting groove 113 between the second waist edge 112 and the long edge 118 of the mounting shell 1. The first long edge 110 is formed on the edge of the extension plate away from the side wall of the mounting shell 1. The limiting groove 201, with its trapezoidal structure, includes an open end 204 with a first length (the first length is the same as the length of the first short edge 109), and the open end 204 is formed on the long edge 212 (or short edge 213) of the heat sink 2. The trapezoidal limiting groove 201 also includes a first limiting edge 206 and a second limiting edge 207 that form a preset angle with the long side 212 (or short side 213) of the heat sink 2, that is, the heat sink 2 will form limiting hooks 208 at the first limiting edge 206 and the second limiting edge 207. The trapezoidal limiting groove 201 also includes a second long edge 205 that is longer than the first length and has the same length as the first long edge 110.
[0061] In summary, combining Figure 3 and Figure 4 As shown, when the heat sink 2 is installed on the mounting housing 1, the limiting hook 208 is engaged with the limiting groove 113. Therefore, if the limiting portion 103 of the mounting housing 1 experiences outward thermal expansion in the circumferential direction, it will be engaged and limited by the limiting hook 208 formed by the limiting groove 201. This prevents and restricts the outward thermal expansion of the limiting portion 103 of the mounting housing 1, thus preventing cracks from forming at the mating surface of the heat sink 2 and the mounting housing 1.
[0062] In this embodiment, there are multiple limiting parts 103, which are arranged at intervals along the circumferential edge of the mounting shell 1. Figure 3As shown, two limiting portions 103 are spaced apart on the long edge 118 of the mounting shell 1; two limiting portions 103 are also spaced apart on the short edge 119 of the mounting shell 1. The multiple limiting portions 103 spaced apart on the long edge 118 and the short edge 119 increase the number of limiting areas between the mounting shell and the heat sink 2. In this way, the long edge 118 and the short edge 119 of the entire mounting shell 1 can be effectively limited, restricting their thermal expansion and ensuring that the connection surface between the mounting shell and the heat sink 2 does not crack, thereby ensuring the structural strength of the T-BOX shell.
[0063] In this embodiment, a fixing part 105 is provided on the mounting part 102, and a fixing hole 202 is provided on the heat sink 2 corresponding to the fixing part 105. Figure 6 and Figure 8 As shown, the fixing part 105 is a fixing limiting plate 106, that is, the fixing limiting plate 106 is provided on the extension plate. Optionally, both the fixing limiting plate 106 and the fixing hole 202 are oval in shape.
[0064] Similarly, if the fixing plate 106 of the mounting shell 1 has an outward thermal expansion tendency in the circumferential direction, it will be limited by the fixing hole 202. In this way, the outward thermal expansion of the fixing plate 106 of the mounting shell 1 in the circumferential direction can be prevented and limited, that is, cracks can be prevented from forming at the joint surface of the heat sink 2 with the mounting shell 1.
[0065] In addition, the combination of the fixed limiting plate 106 and the fixed hole 202 and the combination of the limiting groove 201 and the limiting part 103 have increased the connection or contact area between the mounting shell 1 and the heat sink 2, thereby increasing the stability of the connection or contact.
[0066] Combination Figure 4 As shown, during the actual installation process, the heat sink 2 is fastened to the mounting part 102 at the position of the fixing hole 202 corresponding to the fixing limiting plate 106. The heat sink 2 is then snapped onto the mounting shell 1 at the position of the limiting part 103 corresponding to the limiting groove 201.
[0067] In this embodiment, there are multiple fixing parts 105. A fixing part 105 is provided between adjacent limiting parts 103 on the long edge 118 of the mounting shell 1, and another fixing part 105 is provided between adjacent limiting parts 103 on the short edge 119 of the mounting shell 1. Optionally, referring to Figure 2, one fixing part 105 is provided on the long edge 118 of the mounting shell 1, and one fixing part 105 is provided on the short edge 119.
[0068] In this embodiment, the height of the side wall of the mounting shell 1 located above the extension plate is equal to the thickness of the heat sink 2. That is, when the heat sink 2 is installed on the mounting shell 1, it can be completely embedded inside the mounting shell 1. This ensures the aesthetic appearance of the T-BOX shell.
[0069] Example 2
[0070] This application also provides a vehicle-mounted T-BOX, including the aforementioned T-BOX housing. The beneficial effects of this frame structure are not detailed here.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A T-BOX shell, characterized in that, Including the mounting case and heat sink; The inner sidewall of the mounting housing has an extension portion extending toward the interior of the mounting housing at a predetermined position, and a mounting portion is formed between the extension portion and the sidewall of the mounting housing protruding from the extension portion; the heat sink is mounted on the mounting portion; On the extension, a limiting portion with a gradually expanding structure extending from the side wall of the mounting housing toward the interior of the mounting housing is provided on the heat sink corresponding to the position of the limiting portion and adapted to the limiting portion.
2. The T-BOX housing according to claim 1, characterized in that, Both the limiting part and the limiting groove are trapezoidal structures.
3. The T-BOX housing according to claim 1, characterized in that, The limiting part is a plurality of such limiting parts, which are arranged at intervals along the circumferential edge of the mounting shell.
4. The T-BOX housing according to claim 1, characterized in that, The mounting part is provided with a fixing part, and the heat sink is provided with fixing holes corresponding to the fixing part.
5. The T-BOX housing according to claim 4, characterized in that, The fixing part is a plurality of such fixing parts, which are respectively disposed between adjacent limiting parts on the edge in the length direction and the edge in the width direction of the extension.
6. The T-BOX housing according to claim 4, characterized in that, Both the fixing part and the fixing hole are oval in shape.
7. The T-BOX housing according to claim 1, characterized in that, The height of the mounting shell protruding from the extension is equal to the thickness of the heat sink.
8. The T-BOX housing according to claim 1, characterized in that, The T-BOX housing also includes a main body; The heat sink is fixed to the main body by a fastener.
9. The T-BOX housing according to claim 8, characterized in that, The fixing component is a fixing screw, and the four corner ends of the heat sink are fixed to the main body by the fixing screw.
10. A vehicle-mounted T-BOX, characterized in that, Includes the T-BOX housing as described in any one of claims 1-9.