Radar and vehicle

Abstract

The utility model relates to a radar and a vehicle, comprising a box body and a circuit board, the circuit board is provided with a first conductive hole, the inner wall of the box body is provided with a conductive pin, and the conductive pin is inserted in the first conductive hole and is in interference fit with the first conductive hole. Therefore, the conductive pin is electrically connected with the side wall of the first conductive hole.

Description

Technical Field

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

[0002] A vehicle-mounted radar generally includes a shell and a circuit board arranged in the shell. On the one hand, the circuit board needs to be physically fixed to the inner wall of the shell, and on the other hand, it needs to be electrically connected to the connector inside the shell, so as to achieve electrical connection with the outside of the shell through the connector inside the shell.

[0003] In the prior art, the circuit board is generally fixed to the inner wall of the housing by screws, so the installation efficiency is low. Utility Model Content

[0004] Based on this, it is necessary to provide a radar and a vehicle to address the problem of low circuit board installation efficiency.

[0005] A radar comprises a box body and a circuit board, wherein the circuit board is provided with a first conductive hole, and the inner wall of the box body is provided with a conductive pin, wherein the conductive pin is inserted into the first conductive hole and has an interference fit with the first conductive hole, so that the conductive pin is electrically connected to the side wall of the first conductive hole.

[0006] The conductive pin of the utility model includes a base, a first elastic strip and a second elastic strip, one end of the first elastic strip and one end of the second elastic strip are fixed on the base, the other end of the first elastic strip and the other end of the second elastic strip are fixedly connected so that the first elastic strip and the second elastic strip surround a variable hole, the base is fixed on the inner wall of the box body, and the first elastic strip and the second elastic strip are both in contact with the side wall of the first conductive hole.

[0007] The radar of the utility model further comprises a radiator, which is located in the box body. A first heat-conducting adhesive is arranged between the radiator and the inner wall of the box body, and the radiator is fixed to the inner wall of the box body through the first heat-conducting adhesive.

[0008] In the utility model, one of the radiator and the inner wall of the box body is provided with a positioning hole, and the other is provided with a positioning column, and the positioning column is inserted into the positioning hole.

[0009] The circuit board of the utility model presses the heat sink onto the first thermal conductive adhesive, and conductive adhesive is arranged between the heat sink and the circuit board.

[0010] The conductive adhesive of the utility model is in the shape of a cone or a truncated cone.

[0011] The circuit board of the utility model comprises a substrate and a first conductive film arranged at the edge of the substrate, and the conductive glue is in contact with the first conductive film so that the heat sink is electrically connected to the first conductive film.

[0012] In the utility model, a second heat-conducting adhesive is also arranged between the radiator and the circuit board.

[0013] The circuit board of the utility model is provided with a plurality of second conductive holes, and ends of at least some of the second conductive holes are located at the second thermal conductive adhesive.

[0014] A vehicle includes a radar.

[0015] The beneficial effects of the utility model are:

[0016] By utilizing the interference fit between the conductive pin and the first conductive hole, fixation and electrical connection between the circuit board and the box body are achieved at the same time, which simplifies the installation steps of the circuit board and improves the installation efficiency of the circuit board.

[0017] In addition, the above fixing method avoids the use of screws during the installation of the circuit board, so that the installation efficiency of the circuit board is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the explosion structure of the radar in Example 1 of the utility model;

[0019] Figure 2 The three-dimensional structure of the circuit board in the first embodiment of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 3 The three-dimensional structure of the circuit board in the first embodiment of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 4 The three-dimensional structure of the radiator in Example 1 of the utility model is shown in FIG. Figure 1 ;

[0022] Figure 5 The three-dimensional structure of the radiator in Example 1 of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 6 The cross-sectional structure of the radar in Embodiment 1 of the present utility model is shown in FIG. Figure 1 (the first conductive film and the second conductive film are not shown);

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the radar in Example 1 of the utility model (the upper cover and the circuit board are hidden);

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the lower shell in Example 1 of the utility model;

[0026] Fig. 9 The cross-sectional structure of the radar in Embodiment 1 of the present utility model is shown in FIG. Figure 2 .

[0027] Reference numerals:

[0028] 1. Box body; 11. Conductive pin; 111. Base; 112. First elastic strip; 113. Second elastic strip; 12. Positioning column; 13. Upper cover; 14. Lower shell; 141. Air vent; 2. Circuit board; 21. First conductive hole; 22. Base plate; 23. First conductive film; 24. Second conductive hole; 25. First heating chip; 26. Second heating chip; 27. Second conductive film; 28. Antenna; 3. Radiator; 31. Positioning hole; 32. Bottom plate; 33. First bending plate; 34. Second bending plate; 35. Filling plate; 4. First thermally conductive adhesive; 5. Conductive adhesive; 6. Second thermally conductive adhesive; 7. Air permeable film. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] Embodiment 1:

[0036] See also Figure 1-Figure 9 This embodiment provides a vehicle, which includes a radar. The radar includes a box body 1 and a circuit board 2.

[0037] The box body 1 includes an upper cover 13 and a lower shell 14, and the upper cover 13 covers the lower shell 14. The upper cover 13 and the lower shell 14 are fixed by laser welding. The upper cover 13 and the lower shell 14 are made of different types of plastics. The upper cover 13 can transmit lasers, while the lower shell 14 can absorb lasers. The inner wall of the lower shell 14 is provided with a plurality of conductive pins 11, which can be electrically connected to the outer side of the box body 1. Figure 1 and Figure 8The lower shell 14 is provided with an air hole 141, and the interior of the box body 1 is connected to the outside through the air hole 141. In this embodiment, an air permeable membrane 7 is provided at the air hole 141. The air permeable membrane 7 is made of polytetrafluoroethylene and has a porous structure. The size of the pores is larger than that of air molecules and smaller than that of water molecules, so as to achieve the effect of air permeability and waterproofing.

[0038] The circuit board 2 includes a substrate 22, an antenna 28, a first conductive film 23, a first heating chip 25, a second heating chip 26 and a second conductive film 27. The antenna 28 and the first heating chip 25 are arranged on the front side of the substrate 22, and the first conductive film 23, the second conductive film 27 and the second heating chip 26 are arranged on the back side of the substrate 22.

[0039] The substrate 22 is provided with a first conductive hole 21. In this embodiment, the first conductive hole 21 is a through hole. In some other embodiments, the first conductive hole 21 may also be a blind hole. The sidewall of the first conductive hole 21 is at least partially composed of a conductive medium, which may be a metal such as copper or aluminum. The number and distribution of the first conductive holes 21 match the number and distribution of the conductive pins 11.

[0040] Before the upper cover 13 is welded to the lower shell 14, the substrate 22 needs to be installed in the lower shell 14. The specific installation method is to insert the conductive pin 11 into the corresponding first conductive hole 21 so that the conductive pin 11 and the first conductive hole 21 are interference-fitted. The purpose of locking the circuit board 2 in the lower shell 14 is achieved by clamping the conductive pin 11 and the side wall of the first conductive hole 21. In addition, the above-mentioned clamping relationship also makes the conductive pin 11 and the conductive medium at the side wall of the first conductive hole 21 contact, thereby achieving electrical connection between the conductive pin 11 and the side wall of the first conductive hole 21, so as to allow the substrate 22 to be electrically connected to the outside of the box body 1 through the conductive pin 11.

[0041] The radar further includes a radiator 3, which is located in the box body 1. The function of the radiator 3 is to conduct the heat of the circuit board 2 to the side wall of the box body 1. Therefore, in this embodiment, the radiator 3 is located between the inner wall of the box body 1 and the circuit board 2.

[0042] Specifically, in this embodiment, the radiator 3 includes a base plate 32, which is located at the inner wall of the lower shell 14. A first thermal conductive adhesive 4 is arranged between the base plate 32 and the inner wall of the lower shell 14. The base plate 32 is fixed to the bottom inner wall of the lower shell 14 by the first thermal conductive adhesive 4, and the first thermal conductive adhesive 4 improves the heat conduction efficiency of the radiator 3 to the lower shell 14.

[0043] The radiator 3 further includes a first bending plate 33, a second bending plate 34 and a filling plate 35, wherein the first bending plate 33 and the second bending plate 34 are formed by extending from the edge of the bottom plate 32 toward the upper cover 13. In this embodiment, the radiator 3 is a metal part, which can be die-cast or sheet metal, preferably aluminum alloy bending forming, which has lower cost and lighter weight. In this embodiment, there are three first bending plates 33, two second bending plates 34, and the filling plate 35 blocks the gap between adjacent first bending plates 33.

[0044] Corresponding to the shape of the heat sink 3, in this embodiment, the first conductive film 23 is located at the edge of the back side of the substrate 22, the second heating chip 26 and the second conductive film 27 are located near the middle of the back side of the substrate 22, and a plurality of second conductive holes 24 are provided on the circuit board 2, and the first heating chip 25 is electrically connected to the second conductive film 27 through the second conductive holes 24.

[0045] Thus, the first conductive film 23 can be overlapped on the three first bent plates 33 at the same time, and the second heat generating chip 26 and the second conductive film 27 are respectively overlapped on the two second bent plates 34. The clamping force between the first conductive hole 21 and the conductive pin 11 causes the substrate 22 to squeeze the second bent plate 34 and the first bent plate 33, and then the bottom plate 32 squeezes the first thermal conductive adhesive 4, thereby ensuring a tight connection between the heat sink 3 and the circuit board 2.

[0046] In order to increase the heat conduction efficiency between the heat sink 3 and the circuit board 2, a second thermally conductive adhesive 6 is further provided between the heat sink 3 and the circuit board 2 in this embodiment. Specifically, the second thermally conductive adhesive 6 is provided at two locations, respectively located on the two second bending plates 34. Accordingly, the heat generated by the first heating chip 25 is rapidly conducted to one of the second bending plates 34 through the second conductive hole 24, the second conductive film 27 and one of the second thermally conductive adhesives 6 in sequence, and the heat of the second heating chip 26 is rapidly conducted to another second bending plate 34 through another second thermally conductive adhesive 6. Under the joint action of the two second thermally conductive adhesives 6, the heat of the circuit board 2 in this embodiment can be rapidly conducted to the bottom plate 32, and then conducted to the outside of the box body 1 by relying on the first thermally conductive adhesive 4 and the lower shell 14.

[0047] In this embodiment, a conductive adhesive 5 is further provided between the heat sink 3 and the circuit board 2 to electrically connect the heat sink 3 and the circuit board 2. Specifically, the conductive adhesive 5 is located between the first bent plate 33 and the first conductive film 23. Since the first conductive film 23 is located at the edge of the back side of the substrate 22, it extends along the outer contour of the back side of the substrate 22, so that the three first bent plates 33 and the bottom plate 32 cooperate to provide electromagnetic shielding effect to the circuit board 2, wherein the filling plate 35 fills the gaps between the first bent plates 33 to further provide electromagnetic shielding effect.

[0048] Preferably, the conductive adhesive 5 is in a conical or truncated cone shape, so that the conductive adhesive 5 has good deformation ability, thereby adapting to the spacing between the first bending plate 33 and the first conductive film 23 in different situations. In this embodiment, the theoretical height of the conductive adhesive 5 is 1.6 mm, the actual height after deformation is 1.2 mm, the compression rate is 10-30%, there are multiple conductive adhesives 5, the interval between adjacent conductive adhesives 5 is 8-12 mm, and the width of the first conductive film 23 is 2 mm.

[0049] In order to more accurately install the radiator 3 in the lower shell 14, two positioning holes 31 are provided on the bottom plate 32 in the present embodiment, one of which is a round hole and the other is a waist-shaped hole. Two positioning columns 12 are provided on the inner wall of the lower shell 14. The two positioning columns 12 are respectively inserted into the two positioning holes 31 to achieve the effect of installing and positioning the radiator 3.

[0050] This embodiment also provides a specific structure of a conductive pin 11, which includes a base 111, a first elastic strip 112, and a second elastic strip 113. The base 111 is fixed on the bottom inner wall of the lower shell 14 to adjust the height so that the height of the first elastic strip 112 and the second elastic strip 113 is adapted to the installation position of the substrate 22. One end of the first elastic strip 112 and one end of the second elastic strip 113 are fixed on the base 111, and the other end of the first elastic strip 112 and the other end of the second elastic strip 113 are fixedly connected, so that the first elastic strip 112 and the second elastic strip 113 surround the deformable hole. The first elastic strip 112 and the second elastic strip 113 are in contact with the side wall of the first conductive hole 21 during the insertion process of the first conductive hole 21, and then deform and approach each other, so that the deformable hole is reduced, and the elastic force generated by the deformation of the first elastic strip 112 and the second elastic strip 113 is used to clamp with the side wall of the first conductive hole 21. The first elastic strip 112 and the second elastic strip 113 are both made of metal so as to be electrically connected to the side wall of the first conductive hole 21 .

[0051] In this embodiment, the first thermally conductive adhesive 4 is preferably epoxy resin or polyurethane, which is a thermally conductive structural adhesive with bonding ability and a thermal conductivity of 0.5W / mK-3.5W / mK. The second thermally conductive adhesive 6 is preferably a mixture of aluminum oxide and polysiloxane, with a thermal conductivity of 3-6W / mK. The weight of the circuit board 2 is about 17g, and the first elastic strip 112 and the second elastic strip 113 can generate an elastic force greater than 30N, which meets the fixing requirements of the circuit board 2 under vibration and impact.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A radar, characterized in that: The invention comprises a box body (1) and a circuit board (2), wherein the circuit board (2) is provided with a first conductive hole (21), and the inner wall of the box body (1) is provided with a conductive pin (11), wherein the conductive pin (11) is plugged into the first conductive hole (21) and is interference-fitted with the first conductive hole (21), so that the conductive pin (11) and the side wall of the first conductive hole (21) are electrically connected.

2. The radar according to claim 1, characterized in that The conductive pin (11) comprises a base (111), a first elastic strip (112) and a second elastic strip (113); one end of the first elastic strip (112) and one end of the second elastic strip (113) are fixed to the base (111); the other end of the first elastic strip (112) and the other end of the second elastic strip (113) are fixedly connected so that the first elastic strip (112) and the second elastic strip (113) surround a variable hole; the base (111) is fixed to the inner wall of the box body (1); the first elastic strip (112) and the second elastic strip (113) are both in contact with the side wall of the first conductive hole (21).

3. The radar according to claim 1, characterized in that: The radar further comprises a radiator (3), wherein the radiator (3) is located inside the box body (1), a first thermally conductive adhesive (4) is arranged between the radiator (3) and the inner wall of the box body (1), and the radiator (3) is fixed to the inner wall of the box body (1) by means of the first thermally conductive adhesive (4).

4. The radar according to claim 3, characterized in that: One of the heat sink (3) and the inner wall of the box body (1) is provided with a positioning hole (31), and the other is provided with a positioning column (12), and the positioning column (12) is inserted into the positioning hole (31).

5. The radar according to claim 3, characterized in that: The circuit board (2) presses the heat sink (3) onto the first thermally conductive adhesive (4), and a conductive adhesive (5) is provided between the heat sink (3) and the circuit board (2).

6. The radar according to claim 5, characterized in that: The conductive adhesive (5) is in a cone or truncated cone shape.

7. The radar according to claim 6, characterized in that: The circuit board (2) comprises a substrate (22) and a first conductive film (23) arranged at the edge of the substrate (22), and the conductive adhesive (5) is in contact with the first conductive film (23) so that the heat sink (3) and the first conductive film (23) are electrically connected.

8. The radar according to claim 5, characterized in that: A second heat-conducting adhesive (6) is also provided between the heat sink (3) and the circuit board (2).

9. The radar according to claim 8, characterized in that A plurality of second conductive holes (24) are provided on the circuit board (2), and ends of at least some of the second conductive holes (24) are located at the second thermal conductive adhesive (6).

10. A vehicle, characterized in that: Comprising the radar according to any one of claims 1 to 9.

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