Multilayer millimeter wave radar antenna structure adopting hot melting connection

Abstract

The utility model belongs to the technical field of antenna connection, and particularly provides a multilayer millimeter wave radar antenna structure adopting hot melting connection, which comprises an antenna body, the antenna body comprises a plurality of layers of antenna units and a cover plate which are sequentially overlapped, and the cover plate is arranged at the top ends of the plurality of layers of antenna units. Each antenna unit is provided with a plurality of positioning columns and a plurality of positioning holes matched with the positioning columns, the cover plate is provided with a plurality of positioning holes, and the plurality of positioning columns are matched with the plurality of positioning holes in the upper layer of the antenna unit or the cover plate and are fixed through hot melting. According to the utility model, through the arrangement of the positioning columns, the positioning holes and hot melting fixation, accurate positioning can be carried out, the assembly precision and the production efficiency of a product are improved, the selection range of materials is expanded, the electrical performance of the product is improved, in addition, the bonding force between the adjacent antenna units and between the antenna units and the cover plate can be ensured, and the service life of the antenna is prolonged. And the cavity gap is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of antenna connection, in particular to a multi-layer millimeter wave radar antenna structure connected by hot melting. Background Art

[0002] At present, the connection of multi-layer millimeter wave radar antenna includes SMT welding and screw fixing. Among them, SMT welding has the following problems: a. The material needs to be resistant to high temperature, which reduces the types of optional materials; b. After SMT, the surface of the product will be oxidized and discolored, affecting the appearance and electrical performance; C. The welding yield is low, resulting in rising costs; D. The solder position of reflow soldering is prone to defects such as voids, affecting electrical performance; E. There are few positioning points, which easily leads to low assembly accuracy. The following problems exist in screw fixing: a. There are many screw fixings, the assembly cycle is long, and more labor costs are required; b. It wastes product space; C. It increases product weight. Utility Model Content

[0003] In view of the technical problems in the prior art, the utility model provides a multi-layer millimeter wave radar antenna structure connected by hot melt. With the hot melt solution, the material selection is only related to the electrical performance and the use environment, which expands the range of material selection. The non-high temperature environment is of great help in improving the reliability, electrical performance and appearance of the product. At the same time, the hot melt solution can complete the hot melt assembly at one time through the fixture, which improves the production efficiency. In addition, since the hot melt point can be used as a positioning point, the assembly accuracy is improved.

[0004] The technical solution includes an antenna body, which includes multiple layers of antenna units and cover plates stacked in sequence. The cover plate is installed on the top of the multiple layers of the antenna units. The antenna units are provided with multiple positioning columns and multiple positioning holes that cooperate with the positioning columns. The cover plate is provided with multiple positioning holes. The multiple positioning columns cooperate with the multiple positioning holes on the antenna unit of the upper layer or the cover plate and are fixed by hot melting.

[0005] Furthermore, the material of the positioning column is the same as that of the antenna unit.

[0006] Furthermore, the plurality of positioning posts and the plurality of positioning holes are staggeredly distributed.

[0007] Furthermore, the multiple positioning holes on the cover plate are all stepped holes.

[0008] Furthermore, the top region of the positioning post has a mushroom head structure after hot melting.

[0009] Furthermore, the plurality of positioning posts are integrally formed with the antenna unit.

[0010] Beneficial effects:

[0011] 1. In the utility model, accurate positioning can be performed through positioning columns and positioning holes and hot-melt fixing, thereby improving the assembly accuracy and production efficiency of the product, while expanding the range of material selection, helping to improve the electrical performance of the product, and also ensuring the bonding force between adjacent antenna units and between the antenna unit and the cover plate, thereby reducing product gaps.

[0012] 2. In the present invention, by setting the material of the positioning column to be the same as that of the antenna unit, the increase in product weight can be reduced.

[0013] 3. In the utility model, the staggered distribution of the plurality of positioning posts and the plurality of positioning holes facilitates hot-melting of the positioning posts; the step holes can prevent the top end area of ​​the positioning posts from protruding from the surface of the cover plate after hot-melting, thereby improving the appearance of the product after hot-melting; and the mushroom head structure of the top end area of ​​the positioning posts after hot-melting can improve the bonding strength between adjacent antenna units and between the antenna units and the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model in a decomposed state;

[0016] Figure 2 It is a schematic diagram of the overall structure assembly state of the utility model.

[0017] Description of reference numerals:

[0018] 1. Antenna unit; 2. Cover plate; 3. Positioning column; 4. Positioning hole. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application 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 present application. However, the present application 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 present application, so the present application is not limited by the specific embodiments disclosed below.

[0020] In the description of the present application, 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 application 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 application.

[0021] 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 this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In this application, 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 this application can be understood according to specific circumstances.

[0023] In the present application, 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”, and “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”, and “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.

[0024] 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.

[0025] The utility model provides a multi-layer millimeter wave radar antenna structure connected by hot melting, such as Figure 1 and Figure 2 As shown, it includes an antenna body, which includes multiple layers of antenna units 1 and cover plates 2 stacked in sequence. The cover plates 2 are installed on the top of the multiple layers of the antenna units 1. The antenna units 1 are provided with multiple positioning posts 3 and multiple positioning holes 4 that cooperate with the positioning posts 3. The multiple positioning posts 3 are integrally formed with the antenna units 1. The cover plates 2 are provided with multiple positioning holes 4. The multiple positioning posts 3 cooperate with the multiple positioning holes 4 on the upper layer of the antenna unit 1 or the cover plates 2 and are fixed by hot melting.

[0026] In this embodiment, precise positioning can be performed through the positioning columns 3 and positioning holes 4 and the use of hot-melt fixing, thereby improving the assembly accuracy and production efficiency of the product, while expanding the range of material selection, which helps to improve the electrical performance of the product. In addition, it can also ensure the bonding force between adjacent antenna units 1 and between the antenna unit 1 and the cover plate 2, thereby reducing product gaps.

[0027] In the present invention, preferably, Figure 1 and Figure 2 As shown, the material of the positioning column 3 is the same as that of the antenna unit 1, that is, the same material plastic is used.

[0028] In this embodiment, by setting the material of the positioning column 3 to be the same as that of the antenna unit 1 , the increase in product weight can be reduced.

[0029] In the present invention, preferably, Figure 1 As shown, the plurality of positioning posts 3 and the plurality of positioning holes 4 are staggeredly distributed.

[0030] In this embodiment, the positioning posts 3 and the positioning holes 4 are arranged in a staggered manner, so that the positioning posts 3 can be easily hot-melted.

[0031] In the present invention, preferably, Figure 1 and Figure 2 As shown, the multiple positioning holes 4 on the cover plate 2 are all stepped holes; the top area of ​​the positioning column 3 has a mushroom head structure after hot melting.

[0032] In this embodiment, by setting the step hole, it is possible to avoid the top area of ​​the positioning column 3 protruding from the surface of the cover plate 2 after hot melting, thereby improving the appearance of the product after hot melting; by setting the top area of ​​the positioning column 3 to a mushroom head structure after hot melting, the bonding force between adjacent antenna units 1 and between the antenna unit 1 and the cover plate 2 can be improved.

[0033] 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.

[0034] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A multi-layer millimeter wave radar antenna structure using hot melt connection, comprising an antenna body, wherein the antenna body comprises a plurality of antenna units (1) and a cover plate (2) which are stacked in sequence, wherein the cover plate (2) is mounted on the top of the plurality of antenna units (1), characterized in that: The antenna unit (1) is provided with a plurality of positioning posts (3) and a plurality of positioning holes (4) that cooperate with the positioning posts (3); the cover plate (2) is provided with a plurality of positioning holes (4); the plurality of positioning posts (3) cooperate with the plurality of positioning holes (4) on the upper layer of the antenna unit (1) or the cover plate (2) and are fixed by hot melting.

2. The multi-layer millimeter wave radar antenna structure using hot melt connection according to claim 1 is characterized in that: The material of the positioning column (3) is the same as that of the antenna unit (1).

3. The multi-layer millimeter wave radar antenna structure using hot melt connection according to claim 2 is characterized in that: The plurality of positioning columns (3) and the plurality of positioning holes (4) are distributed in a staggered manner.

4. A multi-layer millimeter wave radar antenna structure using hot melt connection according to any one of claims 1 to 3, characterized in that: The multiple positioning holes (4) on the cover plate (2) are all stepped holes.

5. The multi-layer millimeter wave radar antenna structure using hot melt connection according to claim 4 is characterized in that: The top end area of ​​the positioning column (3) has a mushroom head structure after hot melting.

6. The multi-layer millimeter wave radar antenna structure using hot melt connection according to claim 5, characterized in that: The plurality of positioning posts (3) are integrally formed with the antenna unit (1).

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