CN212342811U

CN212342811U - Built-in PCB antenna that adaptation metal box was used

Info

Publication number: CN212342811U
Application number: CN202021489466.XU
Authority: CN
Inventors: 李甫欧; 康惠海; 杨庆珍
Original assignee: Hangzhou Innover Technology Co ltd
Current assignee: Hangzhou Innover Technology Co ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-01-12
Anticipated expiration: 2030-07-25

Abstract

The utility model relates to a built-in PCB antenna that adaptation metal box was used. The built-in PCB antenna is characterized by comprising a PCB main body antenna plate, a PCB supporting plate, a PCB fixing plate, a conductive sponge and an antenna connecting lead, wherein the PCB main body antenna plate and the PCB supporting plate which are in clamping fit are arranged on the PCB fixing plate in a limiting mode, and the antenna connecting lead penetrates through the conductive sponge and the PCB fixing plate and is welded on the PCB main body antenna plate; the built-in PCB antenna is arranged in the waterproof antenna cover in a matching mode, and the conductive sponge arranged below the PCB fixing plate is in contact matching with the metal box body and is limited by the waterproof antenna cover and the metal box body in a threaded connection mode. The utility model discloses the electrically conductive sponge that sets up on built-in PCB antenna communicates metal-box and PCB antenna, with this shortcoming of metal-box self area shielding characteristic, has carried out the integration optimization, has improved the antenna wholeness ability, has realized the effect that needs to bring with external antenna before.

Description

Built-in PCB antenna that adaptation metal box was used

Technical Field

The utility model relates to a built-in PCB antenna that adaptation metal box was used.

Background

With the progress of scientific technology and the development of smart cities, data information acquisition of industries such as electric power, telecommunication, natural gas, multimedia and the like gradually interacts information accessed to a wireless Internet of things. The housing of the information collecting controller used for information interaction in the open air is a metal box similar to a distribution box. The reason for using the metal box for the controller is as follows: firstly, the performance of the metal shell is much better than that of a non-metal shell in the aspects of firmness, heat resistance and heat dissipation; secondly, the metal shell is low in manufacturing cost, finished products can be manufactured through processes of rapid stamping, stretching, bending and the like, and the compatibility is good, an injection mold does not need to be opened like a plastic shell, the manufacturing period is long, the manufacturing cost is high, and the compatibility is poor; the metal shell can work for a long time in an outdoor open environment through shell rust-proof treatment, the service life is long, aging deformation is easily caused by long-time outdoor use relative to a non-metal shell, if the problems of aging deformation and the like need to be solved, a special engineering plastic material with high temperature resistance and stable performance needs to be used, and great cost improvement can be brought.

However, under the prior art conditions, the use of outdoor metal boxes still presents the following problems:

the metal box has the characteristic of shielding wireless signals due to the material characteristics of the metal box, so that information interaction needs to be connected to a controller circuit in the box through cables, and the use of some areas where cables are not wired is limited.

Second, the metal box has the characteristic of shielding wireless signals due to its own material characteristics, so many controllers use an external sucker antenna for wireless connection at present to solve the situation of the first problem. However, the external antenna has high cost, is easy to be damaged manually or under the use environment, and particularly, if the exposed connecting wire is damaged and broken, the antenna fails, so that the normal information interaction of the controller inside the metal box is influenced.

In addition to the problems described in the first and second problems, the external cable or the external antenna needs to lead the wiring harness out of the metal box, so that the interface for leading out the wiring harness needs to be protected. The protection of pencil interface needs additionally to increase spare parts such as waterproof joint, and the comparatively difficult also certain protection of protection inefficacy or destroyed risk exists of protection to bring the increase of production maintenance cost and protective effect not very reliable.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a technical scheme of built-in PCB antenna that adaptation metal box was used.

The built-in PCB antenna adaptive to the metal box is characterized in that the built-in PCB antenna is matched with the waterproof antenna cover and the metal box body for use, the built-in PCB antenna comprises a PCB main body antenna plate, a PCB supporting plate, a PCB fixing plate, a conductive sponge and an antenna connecting lead, the PCB main body antenna plate and the PCB supporting plate which are in clamping fit are arranged on the PCB fixing plate in a limiting mode, and the antenna connecting lead penetrates through the conductive sponge and the PCB fixing plate and is welded on the PCB main body antenna plate; the built-in PCB antenna is arranged in the waterproof antenna cover in a matching mode, and the conductive sponge arranged below the PCB fixing plate is in contact matching with the metal box body and is limited by the waterproof antenna cover and the metal box body in a threaded connection mode.

The built-in PCB antenna matched with the metal box is characterized in that the waterproof antenna cover is made of high-temperature-resistant and impact-resistant outdoor engineering plastic materials, and an antenna cylinder arranged on the waterproof antenna cover wraps the built-in PCB antenna.

The built-in PCB antenna matched with the metal box is characterized in that an antenna limiting groove is formed in the inner surface of the waterproof antenna cover, the inner diameter of the antenna cylinder is smaller than that of the antenna limiting groove, the inner diameter of the antenna limiting groove is matched with the outer diameter of a PCB fixing plate, and the PCB fixing plate is in interference fit with the antenna limiting groove.

The built-in PCB antenna matched with the metal box is characterized in that a drain hole and a fixing hole are formed in the front face of the waterproof antenna cover, a sealing groove is formed in the back face of the waterproof antenna cover, and a sealing gasket for sealing the waterproof antenna cover and the metal box body is arranged in the sealing groove.

The built-in PCB antenna is characterized in that an antenna hole and a threaded hole are formed in the metal box body, the diameter of the antenna hole is larger than that of the antenna and smaller than that of the PCB fixing plate, an antenna connecting lead is arranged in the antenna hole, and the threaded hole corresponds to a fixing hole in the waterproof antenna cover and is fixed through a bolt.

The built-in PCB antenna is characterized in that a PCB main body antenna board is provided with a protrusion A, an inner concave A and a positioning convex A, a PCB supporting plate is provided with a protrusion B, an inner concave B and a positioning convex B, a PCB fixing plate is provided with a positioning hole, the protrusion A is matched with the inner concave B, the inner concave A is matched with the protrusion B, and the positioning convex A and the positioning convex B are respectively matched with the positioning hole.

The built-in PCB antenna matched with the metal box is characterized in that a tin spraying layer is arranged on the contact surface of the PCB fixing plate and the conductive sponge, the PCB fixing plate and the PCB main body antenna plate are communicated.

The utility model has the advantages that:

1. the built-in PCB antenna is light and small, has a simple structure, is limited by the compression joint of the waterproof antenna cover and the metal box body without additional screws, completes the assembly of the waterproof antenna cover and the metal box body, and then completes the assembly of the built-in PCB antenna, thereby greatly facilitating the production and simplifying the production process;

2. the built-in PCB antenna is built-in, and has no exposed wire harness, so that the protection is simpler; after the waterproof antenna cover is assembled, the sealing gasket below the waterproof antenna cover plays a role in compression and sealing, so that the protection effect is achieved, and the waterproof and dustproof effect is achieved; compared with an external cable or external antenna production mode, extra parts such as a waterproof joint need to be added, the protection effect is not very reliable, the production cost is saved and the protection is reliable in the production mode of the internal PCB antenna;

3. the built-in PCB antenna is built-in, and the problem caused by external antenna is avoided: the external antenna is easy to corrode and age and is easy to damage and lose efficacy due to man-made or use environment, so that the normal work of the collector is influenced; the built-in PCB antenna avoids the problems and reduces the maintenance cost;

4. the structure optimization design of built-in PCB antenna, the electrically conductive sponge that sets up on it communicates metal box and PCB antenna, takes this shortcoming of shielding characteristic with metal box self, has carried out the integration optimization, has improved the antenna wholeness ability, has realized the effect that needs to bring with external antenna before, and the manufacturing cost of built-in PCB antenna self is far less than external antenna cost to the manufacturing cost of the whole body control ware that has significantly reduced.

Drawings

FIG. 1 is an exploded view of the controller of the present invention;

fig. 2 is a schematic structural diagram of the internal PCB antenna of the present invention;

fig. 3 is an exploded view of the structure of the PCB antenna of the present invention;

fig. 4 is a first schematic structural diagram of a waterproof antenna cover;

FIG. 5 is a schematic structural diagram II of a waterproof antenna cover;

in the figure: 1-metal box body, 11-antenna hole, 12-threaded hole, 2-waterproof antenna cover, 21-antenna cylinder, 22-drain hole, 23-fixing hole, 24-antenna limiting groove, 25-sealing groove, 3-built-in PCB antenna, 31-PCB main body antenna board, 31-1 protrusion A, 31-2 concave A, 31-3 positioning convex A, 32-PCB supporting board, 32-1 protrusion B, 32-2 concave B, 32-3 positioning convex B, 33-PCB fixing board, 33-1 tin spraying layer, 33-2 positioning hole, 34-conductive sponge, 35-antenna connecting lead, 36-welding point, 4-metal box door, 5-sealing pad, 6-pan head screw, 7-anti-dismantling cover and 8-controller circuit.

Detailed Description

The invention will be further explained with reference to the drawings in the following description:

the utility model discloses a built-in PCB antenna that adaptation metal box was used, with waterproof antenna lid 2 and the cooperation of metal box 1 use.

The built-in PCB antenna 3 is composed of a PCB main body antenna board 31, a PCB support board 32, a PCB fixing board 33, a conductive sponge 34, an antenna connection lead 35, and the like. The PCB main body antenna board 31, the PCB supporting board 32 and the PCB fixing board 33 are mutually limited and constrained through structures such as a protrusion A31-1, an inner recess A31-2, a protrusion B32-1, an inner recess B32-2, a positioning protrusion A31-3, a positioning protrusion B32-3 and a positioning hole 33-2, and are fixed, and finally three welding points 36 are formed through a welding pad on the circuit board in an electrocautery mode to be stably communicated. The surface tin-spraying layer 33-1 on the contact surface of the PCB fixing plate 33 and the conductive sponge 34 is subjected to FR4 surface tin-spraying process, and the function of the tin-spraying layer is to communicate the conductive sponge 34, the PCB fixing plate 33 and the PCB main antenna plate 31. The wire end of the antenna connecting lead 35 passes through the conductive sponge 34 and the PCB fixing plate 33 and is welded and communicated with the PCB main body antenna plate 31, and the wiring terminal at the other end of the antenna connecting lead 35 is connected to the controller circuit 8 in the collector.

The waterproof antenna cover 2 is made of outdoor non-metal engineering plastics with high temperature resistance, impact resistance and stable performance. An antenna cylinder 21 is arranged on the PCB and wraps the built-in PCB antenna 3; the drain hole 22 is arranged and used for draining rainwater accumulated on the waterproof antenna cover when the controller is used outdoors in open air so as to prevent the rainwater from corroding acidic substances to cause deformation on the waterproof antenna cover; and a sealing groove 25 is arranged and used for assembling a sealing gasket 5 to seal the waterproof antenna cover and the metal box body, so that the built-in PCB antenna in the controller and the controller circuit 8 are protected from being corroded by rainwater in outdoor use.

The waterproof antenna cover is provided with a fixing hole 23 and an antenna limiting groove 24, and the metal box body 1 is provided with a threaded hole 12 and an antenna hole 11. Built-in PCB antenna is spacing by waterproof antenna lid and metal box crimping, waterproof antenna lid and metal box spiro union fixed mounting accomplish the back, conductive sponge 34 interference on the built-in PCB antenna is crowded in the antenna hole 11 of metal box, and contact with the inboard metal of antenna hole 11, thereby realized switching on of built-in PCB antenna and metal box, enlarge the area of earthing of built-in PCB antenna to the whole shell of metal box itself, the gain of the improvement PCB antenna of maximize, realize the promotion of antenna performance.

After the controller circuit 8 is fixed to the metal box body through the pan head screw 6 in a threaded mode and corresponds to the screw hole, the anti-dismounting cover 7 on the controller circuit and the waterproof antenna cover is assembled, the metal box door 4 is closed, and the installation of the whole controller is completed.

Claims

1. A built-in PCB antenna adaptive to a metal box is characterized in that the built-in PCB antenna is matched with a waterproof antenna cover and a metal box body for use, the built-in PCB antenna comprises a PCB main body antenna plate, a PCB supporting plate, a PCB fixing plate, a conductive sponge and an antenna connecting lead, the PCB main body antenna plate and the PCB supporting plate which are in clamping fit are arranged on the PCB fixing plate in a limiting mode, and the antenna connecting lead penetrates through the conductive sponge and the PCB fixing plate and is welded on the PCB main body antenna plate; the built-in PCB antenna is arranged in the waterproof antenna cover in a matching mode, and the conductive sponge arranged below the PCB fixing plate is in contact matching with the metal box body and is limited by the waterproof antenna cover and the metal box body in a threaded connection mode.

2. The built-in PCB antenna adapted to the metal box of claim 1, wherein the waterproof antenna cover is made of high temperature and impact resistant outdoor engineering plastic material, and an antenna cylinder arranged on the waterproof antenna cover wraps the built-in PCB antenna.

3. The built-in PCB antenna for the metal box according to claim 1, wherein the inner surface of the waterproof antenna cover is provided with an antenna limiting groove, the inner diameter of the antenna cylinder is smaller than the inner diameter of the antenna limiting groove, the inner diameter of the antenna limiting groove matches with the outer diameter of the PCB fixing plate, and the PCB fixing plate is in interference fit with the antenna limiting groove.

4. The PCB antenna as claimed in claim 1, wherein the waterproof antenna cover has a front surface with a drainage hole and a fixing hole, a back surface with a sealing groove, and a sealing gasket for sealing the waterproof antenna cover and the metal case.

5. The built-in PCB antenna for the metal box of claim 4, wherein the metal box body is provided with an antenna hole and a threaded hole, the diameter of the antenna hole is larger than that of the antenna and smaller than that of the PCB fixing plate, an antenna connecting lead is arranged in the antenna hole, and the threaded hole corresponds to the fixing hole on the waterproof antenna cover and is fixed by a bolt.

6. The antenna of claim 1, wherein the PCB comprises a main antenna board, a protrusion A, an inner recess A, and a positioning protrusion A, the PCB support board comprises a protrusion B, an inner recess B, and a positioning protrusion B, the PCB fixing board comprises a positioning hole, the protrusion A is engaged with the inner recess B, the inner recess A is engaged with the protrusion B, and the positioning protrusion A and the positioning protrusion B are engaged with the positioning hole respectively.

7. The built-in PCB antenna adapted to the metal box of claim 1, wherein a solder coating is disposed on a contact surface of the PCB fixing plate and the conductive sponge to connect the conductive sponge, the PCB fixing plate and the PCB body antenna plate.