Antenna device
By performing deposition on plastic parts and laser subtracting to form gaps, the antenna branches are limited, and the problems of large area, long time and over-plating of laser engraving in traditional LDS antenna technology are solved, and high-quality and flexible antennas are achieved Installation design.
Patent Information
- Application Number
- CN202421075612.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Traditional LDS antenna technology has problems such as large area of laser engraving, long time, poor accuracy, over-plating, and insufficient design flexibility, especially in narrow trajectory design.
Plastic parts are used for decomposition molding to form the metal outer surface, and then a gap is formed by laser subtracting molding, which defines the antenna branches and joints, and is welded and conducted with the antenna branches and joints through coaxial lines to avoid overplating problems.
The processing process is simplified, the laser engraving area is reduced, the CT time is shortened, the production capacity is improved, the cost is reduced, and it is suitable for narrow trajectory design, which improves the flexibility of antenna design.
Smart Images
Figure CN222507980U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of antennas, and in particular to an antenna device. Background Art
[0002] LDS antenna technology is laser direct structuring technology, which uses a computer to control the movement of the laser according to the trajectory of the conductive pattern, and projects the laser onto the molded three-dimensional plastic parts to activate the circuit pattern.
[0003] Traditional LDS antenna technology has the following defects: 1. The antenna branches need to be laser engraved to activate the metal particles in the plastic, and then the metal layer antenna is formed after chemical plating. The antenna branches in some products cover most of the plastic parts. The laser engraving area is large and the laser engraving time is long. In addition, sometimes multiple surfaces of the product need to be laser engraved, which requires multiple clamping of plastic parts and repeated positioning, which can easily lead to poor accuracy and unstable antenna performance. 2. LDS antenna technology requires laser engraving before chemical plating. When the spacing between antenna branches is small, overflow plating is prone to occur during chemical plating, causing short circuits and affecting product yield. Therefore, LDS antenna technology has limitations on product design and cannot be applied to very narrow track designs. Utility Model Content
[0004] The technical problem solved by the utility model is to provide a high-quality antenna device which is easy to process.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an antenna device, including a plastic part, the plastic part has a metal outer surface formed by chemical plating, the metal outer surface has a gap formed by laser subtraction, the gap defines an antenna branch on the metal outer surface, and also includes a coaxial line, the core wire of the coaxial line is welded and connected to the antenna branch, and the woven mesh layer of the coaxial line is welded and connected to the non-antenna branch area of the metal outer surface.
[0006] In one embodiment, the plastic part is made of ABS material.
[0007] In one embodiment, a receiving groove is provided on the back side of the plastic component, the receiving groove is connected to the outer peripheral wall of the plastic component, and a partial area of the coaxial line is received in the receiving groove.
[0008] In one embodiment, a welding groove is further provided on the back side of the plastic part. The welding groove is located at one end of the accommodating groove and is connected to the accommodating groove. The cross-sectional width of the welding groove is greater than the cross-sectional width of the accommodating groove. The welding point between the antenna branch and the core wire of the coaxial line is located in the welding groove.
[0009] In one embodiment, the antenna branch includes a first part, a second part, a third part, a fourth part and a fifth part which are connected in sequence, the first part is located on the top surface of the welding groove, the second part is located on the inner wall surface of the welding groove, the third part is located on the back side of the plastic part, the fourth part is located on the outer peripheral wall of the plastic part, and the fifth part is located on the front side of the plastic part.
[0010] In one embodiment, the fifth portion includes a plurality of branch nodes.
[0011] In one embodiment, the plastic part is in the shape of a polyhedron as a whole.
[0012] In one embodiment, the plastic part is in a rectangular shape as a whole.
[0013] The beneficial effects of the utility model are as follows: the antenna device has a novel structure, firstly, a metal outer surface is formed on a plastic part by overall chemical plating, and then the metal outer surface is reduced by laser engraving to form a gap, and the antenna branches are defined on the metal outer surface by using the gap. The processing process is very convenient. Compared with products with a large area covered by antenna patterns, the antenna device requires less laser engraving and a shorter CT time, which can improve production capacity and reduce costs. Moreover, chemical plating before laser engraving can avoid the short circuit problem caused by overflow plating, which shows that the antenna device is particularly suitable for narrow trace design. In addition, compared with the traditional LDS antenna technology, in the antenna device, areas that cannot be irradiated by the laser can also be plated, making the antenna design more flexible. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0015] Figure 1 The structure of the antenna device of the first embodiment of the utility model is shown in FIG. Figure 1 ;
[0016] Figure 2 The structure of the antenna device of the first embodiment of the utility model is shown in FIG. Figure 2 ;
[0017] Figure 3 This is a bottom view of the antenna device of Embodiment 1 of the utility model with the coaxial line hidden.
[0018] Description of Figure Numbers:
[0019] 1. Plastic parts; 11. Receiving groove; 12. Welding groove;
[0020] 2. Metal outer surface;
[0021] 3. Gap;
[0022] 4. Antenna branches; 41. First part; 42. Third part; 43. Fourth part; 44. Fifth part; 441. Branches;
[0023] 5. coaxial line; 51. core wire; 52. braided mesh layer. DETAILED DESCRIPTION
[0024] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.
[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0028] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.
[0029] 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0030] Embodiment 1
[0031] Please refer to Figures 1 to 3 Embodiment 1 of the present utility model is: an antenna device, comprising a plastic part 1, wherein the plastic part 1 has a metal outer surface 2 formed by chemical plating, and the metal outer surface 2 has a gap 3 formed by laser subtraction, and the gap 3 defines an antenna branch 4 on the metal outer surface 2, and also comprises a coaxial line 5, wherein a core wire 51 of the coaxial line 5 is welded and connected to the antenna branch 4, and a woven mesh layer 52 of the coaxial line 5 is welded and connected to a non-antenna branch 4 area of the metal outer surface 2.
[0032] The plastic part 1 can be made of a plateable plastic material such as ABS (acrylonitrile-butadiene-styrene copolymer).
[0033] Optionally, a receiving groove 11 is provided on the back of the plastic part 1, and the receiving groove 11 is connected to the outer peripheral wall of the plastic part 1, and a partial area of the coaxial line 5 is accommodated in the receiving groove 11. Specifically, a welding groove 12 is also provided on the back of the plastic part 1, and the welding groove 12 is located at one end of the receiving groove 11 and connected to the receiving groove 11. The cross-sectional width of the welding groove 12 is greater than the cross-sectional width of the receiving groove 11. The welding point between the antenna branch 4 and the core wire 51 of the coaxial line 5 is located in the welding groove 12. The welding groove 12 with a large cross-sectional width can not only facilitate the laser subtraction to form a partial area of the gap 3, but also provide sufficient avoidance space for the welding work of the core wire 51 of the coaxial line 5 and the antenna branch 4.
[0034] In this embodiment, the antenna branch 4 includes a first part 41, a second part, a third part 42, a fourth part 43 and a fifth part 44 which are connected in sequence. The first part 41 is located on the top surface of the welding groove 12, the second part is located on the inner wall surface of the welding groove 12, the third part 42 is located on the back side of the plastic part 1, the fourth part 43 is located on the outer peripheral wall of the plastic part 1, and the fifth part 44 is located on the front side of the plastic part 1. The fifth part 44 includes a plurality of branch nodes 441. The number of the branch nodes 441 can be selected according to actual design requirements. For example, in this embodiment, the number of the branch nodes 441 is multiple. In detail, the number of the branch nodes 441 is three.
[0035] The plastic part 1 is in the shape of a polyhedron as a whole. In this embodiment, the plastic part 1 is in the shape of a rectangular body as a whole. Of course, in other embodiments, the plastic part 1 may be in other shapes as a whole.
[0036] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An antenna device, characterized in that: It includes a plastic part, which has a metal outer surface formed by chemical plating, and the metal outer surface has a gap formed by laser subtraction, and the gap defines an antenna branch on the metal outer surface. It also includes a coaxial line, the core wire of the coaxial line is welded and connected to the antenna branch, and the woven mesh layer of the coaxial line is welded and connected to the non-antenna branch area of the metal outer surface.
2. The antenna device according to claim 1, characterized in that: The material of the plastic part is ABS material.
3. The antenna device according to claim 1, characterized in that: A receiving groove is provided on the back of the plastic part. The receiving groove is connected to the outer peripheral wall of the plastic part. A partial area of the coaxial line is received in the receiving groove.
4. The antenna device according to claim 3, characterized in that: A welding groove is also provided on the back of the plastic part. The welding groove is located at one end of the accommodating groove and is connected to the accommodating groove. The cross-sectional width of the welding groove is greater than the cross-sectional width of the accommodating groove. The welding point between the antenna branch and the core wire of the coaxial line is located in the welding groove.
5. The antenna device according to claim 4, characterized in that: The antenna branch includes a first part, a second part, a third part, a fourth part and a fifth part which are connected in sequence, wherein the first part is located on the top surface of the welding groove, the second part is located on the inner wall surface of the welding groove, the third part is located on the back surface of the plastic part, the fourth part is located on the outer peripheral wall of the plastic part, and the fifth part is located on the front surface of the plastic part.
6. The antenna device according to claim 5, characterized in that: The fifth part includes a plurality of branch sections.
7. The antenna device according to claim 1, characterized in that: The plastic part is in a polyhedral shape as a whole.
8. The antenna device according to claim 7, characterized in that: The plastic part is in a rectangular shape as a whole.