Multilayer millimeter wave radar antenna structure connected by injection molding metal pins

Abstract

The utility model belongs to the technical field of antenna connection, and particularly provides a multilayer millimeter wave radar antenna structure connected by injection molding metal pins, which comprises an antenna body, the antenna body comprises a plurality of layers of antenna units and a cover plate which are sequentially overlapped, the cover plate is arranged at the top end of the plurality of layers of antenna units, and the antenna body further comprises a plurality of metal pins. The bottoms of the plurality of metal pins are fixedly connected with the bottom antenna unit, a plurality of via holes are formed in the other antenna units at intervals, a plurality of mounting holes are formed in the cover plate at intervals, the metal pins penetrate through the via holes in the plurality of layers of antenna units to be welded with the mounting holes, and the plurality of layers of antenna units and the cover plate are connected into a whole through the plurality of metal pins. Through the arrangement of the metal pins, the via holes and the mounting holes, accurate positioning can be carried out, the assembly accuracy of products is improved, a jig and automatic welding equipment can be used for assembly by combining with a local welding scheme, the production efficiency is improved, meanwhile, the selection range of materials is expanded, and the improvement of the electrical performance of the products is facilitated.

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 injection-molded metal pins. 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 injection-molded metal pins. The metal pins and local welding scheme are adopted. 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 to improve the reliability, electrical performance and appearance of the product. At the same time, it can be assembled by a jig plus automatic welding equipment, which improves production efficiency. At the same time, because the metal pins can be used as positioning points, the assembly accuracy is improved.

[0004] The technical solution includes an antenna body, which includes multiple layers of antenna units and cover plates that are stacked in sequence. The cover plate is installed on the top of the multiple layers of antenna units, and also includes multiple metal pins. The bottoms of the multiple metal pins are fixedly connected to the bottom layer of the antenna units. The remaining antenna units are provided with multiple through holes for the multiple metal pins to pass through at intervals. The cover plate is provided with multiple mounting holes that cooperate with the multiple metal pins at intervals. The tops of the metal pins pass through the through holes on the multiple layers of antenna units in sequence and are welded to the mounting holes. The multiple layers of antenna units and the cover plate are connected into a whole through the multiple metal pins.

[0005] Furthermore, the metal pin is integrally formed with the antenna unit at the bottom layer.

[0006] Furthermore, the mounting hole is a stepped hole.

[0007] Furthermore, the top of the metal pin is located in the step hole.

[0008] Beneficial effects:

[0009] 1. In the utility model, accurate positioning can be performed by setting metal pins, vias and mounting holes, thereby improving the assembly accuracy of the product. The solution combined with local welding can be assembled using a jig plus automatic welding equipment, thereby improving the production efficiency of the product and expanding the range of material selection, which helps to improve the electrical performance of the product. In addition, the use of the same metal pin to penetrate the multi-layer antenna unit can reduce the weight of the product.

[0010] 2. In the present invention, the metal pins are formed by one-piece injection molding, which can facilitate the assembly of the product and prevent the metal pins from falling off during the assembly process.

[0011] 3. In the utility model, the step hole is provided to facilitate welding of metal pins, thereby preventing welding slag generated during welding from splashing and affecting other parts of the product, thereby improving the appearance of the product; combined with the setting that the top of the metal pin is located in the step hole, it is possible to prevent the top of the metal pin from protruding from the cover plate surface after welding, thereby further improving the appearance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model in a decomposed state;

[0014] Figure 2 It is a schematic diagram of the overall structure assembly state of the utility model.

[0015] Description of reference numerals:

[0016] 1. Antenna unit; 2. Cover plate; 3. Metal pin; 4. Via hole; 5. Mounting hole. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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 do not represent the only implementation method.

[0023] The utility model provides a multi-layer millimeter wave radar antenna structure connected by injection-molded metal pins, 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 that are stacked in sequence, the cover plates 2 are installed on the top of the multiple layers of the antenna units 1, and also include multiple metal pins 3, the bottoms of the multiple metal pins 3 are fixedly connected to the bottom layer of the antenna units 1, and the remaining antenna units 1 are provided with multiple through holes 4 for the multiple metal pins 3 to pass through at intervals, and the cover plates 2 are provided with multiple mounting holes 5 that cooperate with the multiple metal pins 3 at intervals, the tops of the metal pins 3 pass through the through holes 4 on the multiple layers of antenna units 1 in sequence and are welded to the mounting holes 5, and the multiple layers of the antenna units 1 and the cover plates 2 are connected into a whole through the multiple metal pins 3.

[0024] In this embodiment, the arrangement of the metal pin 3, the via 4 and the mounting hole 5 enables precise positioning, thereby improving the assembly accuracy of the product. The solution combined with local welding can be assembled using a jig plus automatic welding equipment, thereby improving the production efficiency of the product and expanding the range of material selection, thereby helping to improve the electrical performance of the product. In addition, the arrangement of using the same metal pin 3 to penetrate the multi-layer antenna unit 1 can reduce the weight of the product.

[0025] In the present invention, preferably, Figure 1 As shown, the metal pin 3 is integrally formed with the antenna unit 1 at the bottom layer.

[0026] In this embodiment, the metal pin 3 is formed by one-piece injection molding, which can facilitate the assembly of the product and prevent the metal pin 3 from falling off during the assembly process.

[0027] In the present invention, preferably, Figure 1 and Figure 2 As shown, the mounting hole 5 is a stepped hole; the top of the metal pin 3 is located in the stepped hole.

[0028] In this embodiment, the step hole is provided to facilitate welding of the metal pin 3, thereby preventing welding slag generated during welding from splashing and affecting other parts of the product, thereby improving the appearance of the product; combined with the provision of the top of the metal pin 3 being located in the step hole, the top of the metal pin 3 can be prevented from protruding from the surface of the cover plate 2 after welding, thereby further improving the appearance of the product.

[0029] 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.

[0030] 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 connected by injection-molded metal pins, comprising an antenna body, wherein the antenna body comprises a plurality of antenna units (1) and a cover plate (2) stacked in sequence, wherein the cover plate (2) is mounted on the top of the plurality of antenna units (1), characterized in that: It also comprises a plurality of metal pins (3), the bottoms of the plurality of metal pins (3) are fixedly connected to the bottom layer of the antenna unit (1), the remaining antenna units (1) are provided with a plurality of through holes (4) for the plurality of metal pins (3) to pass through, the cover plate (2) is provided with a plurality of mounting holes (5) matching the plurality of metal pins (3), the tops of the metal pins (3) pass through the through holes (4) on the multiple layers of antenna units (1) in turn and are welded to the mounting holes (5), and the multiple layers of the antenna units (1) and the cover plate (2) are connected into a whole through the plurality of metal pins (3).

2. The multi-layer millimeter wave radar antenna structure connected by injection-molded metal pins according to claim 1, characterized in that: The metal pin (3) is integrally formed with the antenna unit (1) at the bottom layer.

3. The multi-layer millimeter wave radar antenna structure connected by injection-molded metal pins according to claim 2, characterized in that: The mounting hole (5) is a stepped hole.

4. The multi-layer millimeter wave radar antenna structure connected by injection-molded metal pins according to claim 3, characterized in that: The top of the metal pin (3) is located in the step hole.

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