CN212379560U

CN212379560U - Heating radome

Info

Publication number: CN212379560U
Application number: CN202021329247.5U
Authority: CN
Inventors: 童海星; 马志国; 皇甫乐晓; 陈高翔
Original assignee: Ningbo Xintai Machinery Co Ltd
Current assignee: Ningbo Xintai Machinery Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-01-19
Anticipated expiration: 2030-07-08

Abstract

The utility model belongs to the technical field of radar covers, and provides a heating radar cover, which comprises a front cover plate, a base, a diaphragm and an electroplating ring, wherein the front cover plate is arranged in front of the base, a thermistor is embedded in the front cover plate, and an electric connecting needle is connected on the thermistor; the base is positioned at the rear part of the front cover plate, the front cover plate is placed into an injection mold to carry out secondary insert injection molding to form the base, and a connector assembly is integrally formed on the base; a heating wire for providing a heating function is embedded in the membrane, and the heating wire is connected with a thermistor in parallel; the electroplating ring is clamped on the outer ring of the front cover plate, a ring groove is formed in the electroplating ring, and the diaphragm embedded with the heating wire is located at the ring groove. The utility model has the advantages of the effectual recess of having solved the front shroud and the cooperation clearance between the base evagination typeface region, effectively solved injecting glue and drawing wire harness on the base, external connector, the effectual solution prevents the too high risk of heating temperature, can get rid of the ice, snow, the frost on surface fast, satisfies radar wave penetrating ability's radome.

Description

Heating radome

Technical Field

The utility model belongs to the technical field of the radome, a heating radome is related to.

Background

The vehicle runs and is in cold environment, can get rid of ice, snow, the frost on surface fast, satisfies radar wave penetrating performance's radome, sends the millimeter wave when on-vehicle radar and passes the radome back, and the loss of reduction millimeter wave that can furthest can realize the self-adaptation function of cruising of vehicle. The existing radome has the following defects: 1) in the existing mass-produced radome, the front cover and the base are of adhesive structures, and the wall thickness of a product is not easy to control; 2) most of the radome is externally connected with a connector, the port of the radome is sealed by glue at the led-out wire harness through connecting the led-out wire harness, so that water is prevented from entering, and the radome is not beautiful in appearance structure; 3) the existing heating radome is long in heating time, too high in rising temperature, easy to burn out the radome structure, and lack of temperature control protective measures inside the radome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem to provide a heating radome and manufacturing method to prior art's current situation, can solve the fit clearance, the effectual risk of preventing the heating temperature too high of having solved.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a heated radome, comprising:

the front cover plate is arranged in front of the base, wherein a thermistor is embedded in the front cover plate, and an electric connecting needle is connected to the thermistor;

the base is positioned at the rear part of the front cover plate, wherein the front cover plate is placed into an injection mold for secondary insert injection molding to form the base, and a connector assembly is integrally formed on the base;

the heating wire is embedded in the membrane and used for providing a heating function, and the heating wire is connected with a thermistor in parallel;

and the electroplating ring is clamped on the outer ring of the front cover plate, wherein the electroplating ring is provided with a ring groove, and the membrane embedded with the heating wire is positioned at the ring groove.

In foretell a heating radome, an organic whole is formed with the typeface inserts on the base, wherein, is formed with the recess with typeface inserts matched with on the apron before, and typeface inserts and recess cooperation are the secondary and mould plastics and form.

In the above-mentioned heating radome, one of them side of front shroud has the cooperation piece, and the last port department of connector has the groove between the installation, and the cooperation piece is located the inslot between the installation, and wherein, has a bending portion of cladding living on the cooperation piece on the diaphragm, and the heater strip electricity of the right-hand member portion of bending connects thermistor, and the heater strip of the lower tip of bending connects the electrical connection needle.

In the above-mentioned heating radome, the right side of the upper port of the connector has a step surface, and the thermistor is assembled between the step surface and the mating block, wherein the connector is provided with an external connecting groove, and the electric connecting pin is located in the external connecting groove.

A method of manufacturing a heated radome, comprising the steps of:

firstly, manufacturing a membrane, embedding a heating wire into the membrane in a hot melting or ultrasonic mode, simultaneously placing the membrane into a high-pressure forming membrane to form the outline of a product, taking out the membrane to cut, and finally integrating the heating wire on the membrane;

placing the membrane integrated with the heating wire and the electric connecting needle into an injection mold at the same time, adopting an insert injection molding process, performing injection molding to form a front cover plate, taking out the front cover plate, blowing the soft membrane and forming a bending part in a hot air blowing mode, so that the membrane can be bent to the other surface, and enabling the heating wire to be in contact connection with the electric connecting needle;

thirdly, placing the front cover plate into an injection mold for secondary insert injection molding, injecting a PC material, and integrally forming a base and a connector;

and fourthly, injection molding an electroplating ring, taking out the electroplating ring for electroplating chromium, and clamping the electroplating ring on the front cover plate outer ring through a buckle on the electroplating ring to finally obtain the required radome assembly.

In the manufacturing method of the heating radome, the second step adopts the modes of resistance welding, laser welding, spot tin welding, ultrasonic welding and the like, so that the heating wires and the electric connecting needle can be conducted, and a thermistor is connected in parallel between the heating wires.

In the manufacturing method of the heating radome, the front surface of the front cover plate is sprayed with the protective coating, and the back surface of the front cover plate is subjected to paint spraying and PVD surface treatment.

In the above method for manufacturing a heating radome, the front cover plate and the diaphragm are made of PC or ASA material, and the rear cover plate is selected from PC, AES, ASA or ABS.

Compared with the prior art, the utility model has the advantages of the effectual recess of having solved the front shroud and the cooperation clearance between the base evagination typeface region, effectively solved injecting glue and drawing wire harness on the base, external connector, the effectual solution prevents the too high risk of heating temperature, can get rid of ice, snow, the frost on surface fast, satisfies radar wave penetrating ability's radome.

Drawings

FIG. 1 is a schematic front view of the present heating radome;

FIG. 2 is a schematic view of the present heating radome;

fig. 3 is a partially enlarged structural view of fig. 2.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

In the figure, a front cover plate 1; a base 2; a membrane 3; a heating wire 4; a plating ring 5; a thermistor 6; an electrical connection pin 7; a connector 8; a font insert 9; a groove 10; a ring groove 11; a mating block 12; an installation intermediate groove 13; a bent portion 14; a step surface 15; an external connection slot 16.

As shown in fig. 1, the heating radome mainly comprises a front cover plate 1, a base 2, a membrane 3, a heating wire 4 and an electroplating ring 5, ice, snow and frost on the surface can be quickly removed through the heating wire 4, the loss of millimeter waves can be reduced to the maximum extent, and the adaptive cruise function of a vehicle can be realized.

As shown in fig. 2, the front cover plate 1 is installed in front of the base 2, wherein the front cover plate 1 is embedded with a thermistor 6, the thermistor 6 is connected with an electric connecting pin 7, the base 2 is located at the rear part of the front cover plate 1, wherein the front cover plate 1 is placed into an injection mold to be subjected to secondary insert injection molding to form the base 2, a connector 8 is integrally formed on the base 2, thus the problems of injecting glue on the base 2, leading out a wire harness and connecting the connector 8 externally can be effectively solved, the front cover plate 1 and the base 2 are subjected to secondary insert injection molding, so that the connection and matching are tighter, the problem that the wall thickness and size of a product generated by glue joint are not easy to control is solved, a font insert 9 is integrally formed on the base 2, wherein a groove 10 matched with the font insert 9 is formed on the front cover plate 1, the font insert 9 and the groove 10 are matched with each other by secondary injection molding, and thus the matching gap between the groove 10 of the front cover.

In order to realize the heating function, a membrane 3 is arranged on the surface of the front cover plate 1, wherein a heating wire 4 for providing the heating function is embedded in the membrane 3, and the heating wire 4 is connected with a thermistor 6 in parallel; the electroplating ring 5 is clamped on the outer ring of the front cover plate 1, wherein the electroplating ring 5 is provided with a ring groove 11, and the diaphragm 3 embedded with the heating wire 4 is positioned at the ring groove 11, so that the diaphragm 3 can be exposed out of the ring groove 11, and heating is convenient.

Here, a parallel relation is formed between the thermistor 6 and the heating wire 4, when the temperature is low, the resistance value of the thermistor 6 is large, the heating power of the radome is not affected basically, when the temperature rises to a certain value, the resistance value is reduced sharply, the wiring harness connected through the connector 8 is fed back to the vehicle-mounted ECU in time, and the power is cut off in time, so that the risk of preventing the heating temperature from being too high is effectively solved, as shown in fig. 3, as an optimization, one side of the front cover plate 1 is provided with a matching block 12, the upper port of the connector 8 is provided with an installation room groove 13, the matching block 12 is positioned in the installation room groove 13, the matching block 12 is mainly used for facilitating the connection of the heating module of the membrane 3, the matching block 12 can be firmly fixed through the installation room groove 13, wherein the membrane 3 is provided with a bending part 14 covering the matching block 12, the heating wire 4 at the right end part of the bending part 14, the heater strip 4 of the lower tip of the portion 14 of bending connects electric connector 7, make things convenient for thermistor 6 and heater strip 4 to effectively contact like this, and guarantee that heater strip 4 and electric connector 7 are connected and switched on, as optimizing, the right side of the upper port of connector 8 has step face 15, thermistor 6 assembles between step face 15 and cooperation piece 12, wherein seted up outside connecting groove 16 on the connector 8, electric connector 7 is located outside connecting groove 16, here step face 15 can assemble thermistor 6, outside connecting groove 16 can play the waterproof effect, prevent that electric connector 7 from contacting the exterior, after on-vehicle radar sent the millimeter wave and passed the radome, utilize the loss of the furthest reduction millimeter wave of heating energy, can realize the self-adaptation function of cruising of vehicle.

This patent mainly provides a manufacturing approach of heating radome, and the concrete method is as follows:

the material selection is firstly carried out, in the field of materials, the key index for evaluating the wave transmission performance is the dielectric constant, and the smaller the dielectric constant is, the better the wave transmission performance is. PC or ASA material is preferred for the front cover plate 1 and the membrane 3, because the radar cover is an exterior trimming part, good weather resistance is needed, the radar cover is low in cost and easy to process, and has the characteristic of light weight, the rear cover plate which can be selected as a rear cover plate can be selected as PC, AES, ASA or ABS, then, a hot melting or ultrasonic mode is adopted, the heating wire 4 is embedded into the membrane 3, meanwhile, the membrane 3 is placed into a high-pressure forming membrane to form the appearance outline of a product, the membrane 3 is taken out to be cut, finally, the heating wire 4 is integrated on the membrane 3, the membrane 3 integrated with the heating wire 4 and the electric connecting needle 7 are placed into an injection mold, an insert injection molding process is adopted, the front cover plate 1 is injection molded, the front cover plate 1 is taken out, the hot air blowing mode is adopted, the membrane 3 is blown and the bending part 14 is formed, the membrane 3 can be bent; the contact part between the heating wire 4 and the electric connecting needle 7 is ensured, then the heating wire 4 and the electric connecting needle 7 can be conducted by adopting the modes of resistance welding, laser welding, point tin welding, ultrasonic welding and the like, meanwhile, a thermistor 6 is connected in parallel between the heating wires 4, and the protective coating is sprayed on the surface of the front cover plate 1, so that the front cover plate has good abrasion resistance, rain and snow frost erosion resistance, weather resistance, electrostatic resistance and excellent wave transmission property; carrying out surface treatment such as back molding spray painting and PVD (physical vapor deposition) to form a required pattern color, putting the front cover plate 1 into an injection mold for secondary insert injection molding, injecting a PC (polycarbonate) material, and integrally forming the base 2 and the connector 8; the front cover plate 1 and the base 2 can only have a zero clearance, the total wall thickness dimension of the radar cover is stable, the electroplating ring 5 is formed by injection molding, the electroplating ring 5 is taken out for electroplating chromium treatment, and then the buckle on the electroplating ring 5 is clamped on the outer ring of the front cover plate 1, and finally the required radar cover assembly is obtained.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the scope and spirit of the invention as defined in the accompanying claims.

Claims

1. A heated radome, comprising:

2. The heating radome of claim 1 wherein the base is integrally formed with a font insert, wherein the front cover plate is formed with a recess for mating with the font insert, the font insert and recess mating being formed by two shot molding.

3. A heating radome as claimed in claim 1 or 2 wherein the front cover plate has a mating block on one side thereof, the connector has an inter-fitting groove at an upper port thereof, the mating block is located in the inter-fitting groove, wherein the diaphragm has a bent portion wrapped around the mating block, a heater wire at a right end portion of the bent portion is electrically connected to the thermistor, and a heater wire at a lower end portion of the bent portion is electrically connected to the electrical connector pin.

4. A heating radome as claimed in claim 3 wherein the connector has a stepped surface on the right side of the upper port and the thermistor is mounted between the stepped surface and the mating block, and wherein the connector has an external receiving slot in which the electrical connector pin is located.