Millimeter wave radar assembly structure and assembly method
By setting up a gift hole and connecting components on the main circuit board, the problem of insufficient clearance between the millimeter wave radar and the product shell is solved, and the adaptability and R&D efficiency of the assembly structure is improved.
Patent Information
- Application Number
- CN202510145484.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-04-25
AI Technical Summary
When integrating the millimeter-wave radar module into the terminal product, the space between the product shell and the substrate is limited, making it difficult to meet the minimum clearance requirement between the millimeter-wave radar and the radome, resulting in the need to re-revise the structural design, which is large, long, and high risk.
By providing a give way hole through both front and back sides on the main circuit board, and a first connecting component is provided at the part adjacent to the give way holes on both front and back sides of the main circuit board, the millimeter-wave radar circuit board is allowed to be installed on the front or back side of the main circuit board, and connected to the first connecting component through the second connecting component, satisfying the clearance requirements.
It improves the adaptability compatibility of millimeter wave radar circuit boards, reduces product development and transformation costs, simplifies transformation steps, and improves R&D efficiency.
Smart Images
Figure CN119893842A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of millimeter wave radar, and in particular to a millimeter wave radar assembly structure and an assembly method. Background Art
[0002] At present, when integrating millimeter-wave radar modules into terminal products, certain structural clearance constraints need to be met. Millimeter-wave radar modules are usually installed inside the product housing. In this case, the product housing is equivalent to the antenna cover of the millimeter-wave radar. The millimeter-wave radar needs to have a certain clearance (spacing) with the antenna cover to ensure the best ranging performance and perception effect of the millimeter-wave radar. In the middle and late stages of upgrading old products or developing new products, if new millimeter-wave radar module components need to be introduced, the following problems will be faced: there is limited space between the outer cover and the substrate of the existing product, and there is not enough space to install the millimeter-wave radar, or there is only enough space for installation but not enough space to ensure the minimum clearance requirements between the millimeter-wave radar and the product cover, which leads to the need to redesign the structure, which requires large investment, long time, high risk, and affects the launch of new products. Summary of the invention
[0003] In order to overcome the above problems existing in the existing millimeter wave radar assembly, the technical problem to be solved by the present invention is to provide a millimeter wave radar assembly structure and an assembly method capable of improving adaptation compatibility.
[0004] The technical solution adopted by the present invention to solve its technical problem is:
[0005] A millimeter-wave radar assembly structure includes a main circuit board and a millimeter-wave radar circuit board arranged on the main circuit board, wherein the main circuit board is provided with a clearance hole penetrating through both front and back sides thereof, and first connecting components are provided at positions adjacent to the clearance holes on both front and back sides of the main circuit board. The millimeter-wave radar circuit board is installed on the front or back side of the main circuit board at a position opposite to the clearance hole, and is connected to the first connecting component via a second connecting component thereon, and the size of the clearance hole meets the clearance requirement of the millimeter-wave radar circuit board.
[0006] Furthermore, a second connecting component is provided on the edges of both the front and back sides of the millimeter-wave radar circuit board, and the millimeter-wave radar circuit board is connected to the main circuit board through the second connecting component and the first connecting component on the adjacent surfaces of the two.
[0007] Furthermore, the first connecting components on the front and back sides of the main circuit board are symmetrically arranged, and the second connecting components on the front and back sides of the millimeter wave radar circuit board are also symmetrically arranged.
[0008] Furthermore, the give-way hole is a strip through hole, the first connecting component is arranged on both sides of the length direction of the strip through hole, the millimeter-wave radar circuit board is connected to the first connecting components corresponding to the two sides of the strip through hole through the second connecting components on both sides of the length direction thereof, and the length of the strip through hole is greater than the length of the millimeter-wave radar circuit board.
[0009] A method for assembling a millimeter-wave radar, wherein the installation method of the millimeter-wave radar circuit board is selected according to the distance between the main circuit board and the product shell. When the distance between the main circuit board and the product shell meets the clearance requirement of the millimeter-wave radar circuit board, the millimeter-wave radar circuit board is directly installed on the front side of the main circuit board; otherwise, the assembly structure of the millimeter-wave radar is adopted, a clearance hole is firstly set on the main circuit board, and then the millimeter-wave radar circuit board is installed on the back side of the main circuit board.
[0010] Furthermore, when installing the millimeter-wave radar circuit board, the millimeter-wave radar circuit board is installed on the front or back side of the main circuit board in a manner that the front side of the millimeter-wave radar circuit board faces the product housing.
[0011] The beneficial effect of the present invention is that by arranging a clearance hole on the main circuit board and arranging a first connecting component at the position adjacent to the clearance hole on the front and back sides of the main circuit board, the millimeter-wave radar circuit board can be installed on the front or back side of the main circuit board according to the clearance conditions, thereby improving the adaptation compatibility of the installation of the millimeter-wave radar circuit board, reducing product development and modification costs, and helping to improve R&D efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a front view of the main circuit board of the present invention;
[0013] Figure 2 is a side view of the main circuit board of the present invention;
[0014] Figure 3 This is a front view of the millimeter wave radar circuit board of the present invention;
[0015] Figure 4 is a side view of the millimeter wave radar circuit board of the present invention;
[0016] Figure 5 It is a schematic structural diagram of the millimeter wave radar circuit board of the present invention;
[0017] Figure 6 It is a schematic diagram of the structure of the inverted millimeter wave radar circuit board of the present invention.
[0018] Marked in the figure are, 1- main circuit board, 2- millimeter wave radar circuit board, 3- product housing, 11- first connecting component, 12- clearance hole, 21- second connecting component. DETAILED DESCRIPTION
[0019] The present invention is further described below in conjunction with the accompanying drawings.
[0020] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not specific references to the absolute positions of related components or the positional relationships between components. They are only used to explain the relative positional relationship and movement status between components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0021] like Figure 1-6 As shown, the assembly structure of a millimeter wave radar provided by the present invention includes a main circuit board 1 and a millimeter wave radar circuit board 2 arranged on the main circuit board 1, the main circuit board 1 is provided with a clearance hole 12 penetrating the front and back sides thereof, and the positions adjacent to the clearance hole 12 on the front and back sides of the main circuit board 1 are provided with a first connection component 11, the millimeter wave radar circuit board 2 is installed on the front or back side of the main circuit board 1 at a position opposite to the clearance hole 12, and is connected to the first connection component 11 through the second connection component 21 thereon, and the size of the clearance hole 12 meets the clearance requirement of the millimeter wave radar circuit board 2, that is, the antenna area of the millimeter wave radar module on the millimeter wave radar circuit board 2 should be located within the range of the clearance hole 12, so as to prevent the main circuit board 1 from blocking the millimeter wave radar module from sending and receiving signals outward. The first connection component 11 and the second connection component 21 can be mutually matching connection structures such as slots and pins, spring clips and contacts, spring pins and pads, or flat cables and sockets.
[0022] The present invention provides a clearance hole 12 on the main circuit board 1, so that when the millimeter-wave radar circuit board 2 is installed on the back side of the main circuit board 1, the millimeter-wave radar module can also send signals outward through the clearance hole 12 without being blocked by the main circuit board 1 and the product housing 3. Therefore, the millimeter-wave radar circuit board 2 can be installed on the front or back side of the main circuit board 1 according to the product structure shape, thereby improving the flexibility of the installation of the millimeter-wave radar circuit board 2.
[0023] In order to ensure the stability of the millimeter-wave radar module's signal transmission and reception, the millimeter-wave radar module needs to be oriented in the same direction when the millimeter-wave radar circuit board 2 is installed on the front or back of the main circuit board 1. If the first connection component 11 and the second connection component 21 are in the form of a flat cable and a socket connection, only one set of second connection components 21 needs to be set on the millimeter-wave radar circuit board 2; but considering the compactness of the structure and the stability of the connection, the first connection component 11 and the second connection component 21 are usually mounted using solder pads. Therefore, if Figure 1-4As shown, in order to ensure the installation orientation of the millimeter-wave radar circuit board 2, a second connecting component 21 is provided on the edges of both the front and back sides of the millimeter-wave radar circuit board 2, and the millimeter-wave radar circuit board 2 is connected to the main circuit board 1 through the second connecting component 21 and the first connecting component 11 on the adjacent surfaces of the two.
[0024] When the millimeter-wave radar circuit board 2 is installed on the front or back of the main circuit board 1, a symmetrical layout or an asymmetrical layout can be adopted. In order to improve the correctness of the millimeter-wave radar circuit board 2 being installed on the front and back of the main circuit board 1, the first connecting components 11 on the front and back of the main circuit board 1 are preferably arranged symmetrically, and the second connecting components 21 on the front and back of the millimeter-wave radar circuit board 2 are also preferably arranged symmetrically. Symmetrical layout means that no matter whether the millimeter-wave radar circuit board 2 is installed on the front or back of the main circuit board 1, the orientation of the millimeter-wave radar circuit board 2 itself does not change, and there is no need to rotate or flip it, so that the projection position of the millimeter-wave radar module on the main circuit board 1 remains unchanged, ensuring the stability of its receiving and transmitting signals.
[0025] The structure of the clearance hole 12 can be in various forms, as long as it does not block the millimeter wave radar module from sending and receiving signals. Figure 5 , Figure 6 As shown, the clearance hole 12 is a strip through hole, which can be easily positioned and processed. The first connecting component 11 is arranged on both sides of the length direction of the strip through hole. The millimeter-wave radar circuit board 2 is connected to the first connecting components 11 corresponding to the two sides of the strip through hole through the second connecting components 21 on both sides of its length direction. The length of the strip through hole is greater than the length of the millimeter-wave radar circuit board 2, which is convenient for clamping the millimeter-wave radar circuit board 2 for positioning and fixing, and minimizing the impact on the millimeter-wave radar signal.
[0026] The present invention also provides a method for assembling a millimeter wave radar, which is mainly used in the middle and late stages of product development when a new millimeter wave radar module assembly needs to be introduced. There are mainly two situations. One is that the distance between the circuit board 1 and the product housing 3 in the original structure meets the clearance requirements of the millimeter wave radar circuit board 2, and the millimeter wave radar circuit board 2 can be directly installed on the front of the main circuit board 1 without other modifications; the other situation is that for products with relatively compact internal space, the space between the product housing and the product mainboard is small and the distance is close. The conventional millimeter wave radar positive mounting method will cause the radar ranging performance to be seriously reduced. At this time, the above-mentioned millimeter wave radar assembly structure can be used. By structurally modifying the main circuit board 1, a clearance hole 12 and a first connecting component 11 are first opened on it, and then the millimeter wave radar circuit board 2 is installed on the back of the main circuit board 1. This method can greatly simplify the modification steps and reduce the modification cost, thereby improving the research and development efficiency. In addition, since the millimeter-wave radar modules are integrated on the front side of the millimeter-wave radar circuit board 2, when installing the millimeter-wave radar circuit board 2, in order to ensure the stability of the millimeter-wave radar module's signal transmission and reception, the millimeter-wave radar circuit board 2 should be installed on the front or back side of the main circuit board 1 with the front side facing the product housing 3.
[0027] In summary, the present invention realizes the double-sided mounting of the millimeter-wave radar circuit board 2 only by opening the clearance hole 12 on the main circuit board 1, effectively improves the structural compatibility of the millimeter-wave radar assembly, reduces the design requirements of the millimeter-wave radar for the product structure, and has good practicality and economic value.
Claims
1. A millimeter wave radar assembly structure, comprising a main circuit board (1) and a millimeter wave radar circuit board (2) arranged on the main circuit board (1), characterized in that: The main circuit board (1) is provided with a clearance hole (12) penetrating both the front and back sides thereof; first connection components (11) are provided at positions adjacent to the clearance holes (12) on both the front and back sides of the main circuit board (1); the millimeter wave radar circuit board (2) is mounted on the front or back side of the main circuit board (1) at a position opposite to the clearance hole (12), and is connected to the first connection component (11) via a second connection component (21) thereon; and the size of the clearance hole (12) meets the clearance requirement of the millimeter wave radar circuit board (2).
2. The assembly structure of a millimeter wave radar as claimed in claim 1, characterized in that: Second connection components (21) are provided on the edges of both the front and back surfaces of the millimeter wave radar circuit board (2), and the millimeter wave radar circuit board (2) and the main circuit board (1) are connected via the second connection components (21) and the first connection components (11) on adjacent surfaces of the two.
3. The assembly structure of a millimeter wave radar as claimed in claim 2, characterized in that: The first connection components (11) on the front and back sides of the main circuit board (1) are arranged symmetrically, and the second connection components (21) on the front and back sides of the millimeter wave radar circuit board (2) are also arranged symmetrically.
4. The assembly structure of a millimeter wave radar according to any one of claims 1 to 3, characterized in that: The clearance hole (12) is a strip-shaped through hole, the first connection components (11) are arranged on both sides of the strip-shaped through hole in the length direction, the millimeter wave radar circuit board (2) is connected to the first connection components (11) corresponding to the two sides of the strip-shaped through hole via the second connection components (21) on both sides of the length direction, and the length of the strip-shaped through hole is greater than the length of the millimeter wave radar circuit board (2).
5. A method for assembling a millimeter wave radar, characterized in that: The installation method of the millimeter-wave radar circuit board (2) is selected according to the distance between the main circuit board (1) and the product housing (3); when the distance between the main circuit board (1) and the product housing (3) meets the clearance requirement of the millimeter-wave radar circuit board (2), the millimeter-wave radar circuit board (2) is directly installed on the front side of the main circuit board (1); otherwise, the assembly structure of the millimeter-wave radar as described in any one of claims 1 to 4 is adopted, firstly a clearance hole (12) is provided on the main circuit board (1), and then the millimeter-wave radar circuit board (2) is installed on the back side of the main circuit board (1).
6. The method for assembling a millimeter wave radar as claimed in claim 5, characterized in that: When installing the millimeter wave radar circuit board (2), the millimeter wave radar circuit board (2) is installed on the front or back surface of the main circuit board (1) in a manner such that the front surface of the millimeter wave radar circuit board (2) faces the product housing (3).