Antenna waterproof structure and vehicle-mounted antenna

Abstract

The utility model provides an antenna waterproof structure and a vehicle-mounted antenna. The antenna waterproof structure comprises a shell, a waterproof pad, an antenna and a circuit board, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are welded, the circuit board is installed on the lower shell, the antenna is electrically connected with the circuit board, the upper shell is provided with a first wire outlet unit, the lower shell is provided with a second wire outlet unit, and the first wire outlet unit is electrically connected with the second wire outlet unit. The first wire outlet unit and the second wire outlet unit are attached to form a wire outlet, the waterproof pad comprises a waterproof body and a wire outlet body which are connected, the waterproof body abuts against the position between the upper shell and the lower shell in an interference mode, the wire outlet body is provided with a receding opening, the receding opening and the wire outlet are oppositely arranged, and the waterproof pad is arranged between the waterproof body and the wire outlet body. The upper shell is provided with a receding opening and a wire outlet, the receding opening and the wire outlet are used for a wire harness to penetrate through, the upper shell is provided with a containing groove, and part of the structure of the wire outlet body is located in the containing groove so that the wire outlet body can abut against the upper shell in a positive pressure and side pressure mode.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to an antenna waterproof structure and a vehicle-mounted antenna. Background Art

[0002] A car antenna is a device used to receive and transmit radio signals. Its primary function is to receive radio signals from applications such as in-vehicle communication systems, navigation, entertainment, and safety devices, and convert them into audible or visual signals that can be perceived by vehicle occupants. With the development of car antennas, some car antennas need to be placed in wet areas. Car antennas are susceptible to various environmental factors such as rain, dust, and moisture, which can cause unstable antenna signal quality, increased interference, and even signal loss.

[0003] In order to solve the above problems, the Chinese patent with application number CN202023287352.X discloses a multifunctional antenna, including a base and a waterproof pad. The bottom of the base is provided with a waterproof pad, and the waterproof pad and the base are fixed by screws. The bottom of the waterproof pad is provided with a mounting rod, and one end of the mounting rod is embedded in the interior of the base. The top of the base is provided with a mounting plate, and one side of the mounting plate is provided with a mounting hole. There are four mounting holes, which are located at the four corners of the mounting plate. A first card hole is provided in the middle of the mounting plate, and the first card hole and the mounting plate are fixed by embedding. A helical antenna is provided on the top of the mounting plate, and a first card block is provided at the bottom of the helical antenna. The first card block and the helical antenna are fixed by screws.

[0004] However, the above antenna structure design has the following problems during use:

[0005] The antenna's base is fitted with a waterproof gasket, secured to the base with screws. The gasket wraps around the base, creating a positive interference fit through tightening. However, since the screws only compress the gasket in one direction, this poor waterproofing performance fails to meet the IP67 dust and water resistance requirements. Furthermore, tightening the screws takes a significant amount of time during antenna assembly, resulting in low efficiency.

[0006] Therefore, there is an urgent need for an antenna waterproof structure that has high waterproof performance and can improve production efficiency. Utility Model Content

[0007] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide an antenna waterproof structure and a vehicle-mounted antenna that have high waterproof performance and can improve production efficiency.

[0008] The purpose of this disclosure is achieved through the following technical solutions:

[0009] An antenna waterproof structure, comprising:

[0010] A shell, a waterproof pad, an antenna and a circuit board, wherein the antenna and the circuit board are both accommodated in the shell; the shell includes an upper shell and a lower shell, the upper shell is welded to the lower shell, the circuit board is installed on the lower shell, the antenna is electrically connected to the circuit board, the upper shell is provided with a first outlet unit, the lower shell is provided with a second outlet unit, the first outlet unit and the second outlet unit are fitted together to form an outlet, the waterproof pad includes a connected waterproof body and an outlet body, the waterproof body is interference-fitted between the upper shell and the lower shell, the outlet body is provided with an avoidance opening, the avoidance opening is arranged opposite to the outlet, the avoidance opening and the outlet are used for the wiring harness to pass through, the upper shell is provided with a receiving groove, and part of the structure of the outlet body is located in the receiving groove, so that the outlet body is in positive pressure and side pressure contact with the upper shell.

[0011] In one embodiment, the waterproof body and the outlet body are an integrally formed structure.

[0012] In one embodiment, the upper shell and the lower shell are welded by ultrasonic welding.

[0013] In one embodiment, a reinforcing rib is protruded from one side of the waterproof body adjacent to the upper shell.

[0014] In one embodiment, there are multiple reinforcing ribs, and the multiple reinforcing ribs are arranged around the waterproof body.

[0015] In one embodiment, the outer shell and the inner side of the waterproof pad jointly form a first cavity, the first cavity is used to accommodate the antenna and the circuit board, the outer shell and the outer side of the waterproof pad jointly form a second cavity, and the outlet body is provided with an exhaust groove on a side adjacent to the outlet port, and the exhaust groove is communicated with the second cavity.

[0016] In one embodiment, the exhaust groove extends from the avoidance opening to a side surface of the outlet body.

[0017] In one embodiment, there are multiple exhaust slots, and the multiple exhaust slots are spaced apart and arranged on the outlet body.

[0018] A vehicle-mounted antenna comprises a wiring harness and the antenna waterproof structure described in any one of the above embodiments, wherein the wiring harness passes through the wiring outlet and the avoidance outlet in sequence and is electrically connected to the circuit board.

[0019] In one embodiment, the wiring harness is in interference fit with the wall of the avoidance opening.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] In the above-mentioned antenna waterproof structure, the upper shell and the lower shell are welded, the circuit board is installed in the lower shell, the antenna and the circuit board are electrically connected, and the waterproof pad includes a connected wire body and a waterproof body. The waterproof body is interference-fitted between the upper shell and the lower shell. The upper shell is provided with a receiving groove, and the structure of the wire body is located in the receiving groove. In this way, the structure of the wire body outside the receiving groove is in positive pressure contact with the upper shell, and the structure of the wire body inside the receiving groove is in side pressure contact with the upper shell. Specifically, the upper shell and the lower shell are welded to seal the upper shell and the lower shell, and the waterproof pad is interference-fitted between the upper shell and the lower shell. That is, the waterproof pad eliminates the step of screwing and fixing, thereby improving production efficiency. The wire body and the upper shell are in contact through positive pressure and side pressure, that is, the wire body and the upper shell are pressed tightly in multiple directions, thereby improving the waterproof effect of the wire body at the wire outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic structural diagram of an antenna waterproof structure according to an embodiment;

[0024] Figure 2 for Figure 1 Another structural schematic diagram of the antenna waterproof structure shown;

[0025] Figure 3 for Figure 1 A structural cross-sectional view of the antenna waterproof structure shown;

[0026] Figure 4 for Figure 1 A schematic structural diagram of a waterproof pad of the antenna waterproof structure shown;

[0027] Figure 5 for Figure 1 The distribution diagram of the first cavity and the second cavity of the antenna waterproof structure shown;

[0028] Figure 6 Schematic diagram of the structure of a vehicle-mounted antenna according to an embodiment. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The present disclosure provides an antenna waterproof structure, comprising a shell, a waterproof pad, an antenna and a circuit board, wherein the antenna and the circuit board are both accommodated in the shell; the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are welded, the circuit board is installed on the lower shell, the antenna is electrically connected to the circuit board, the upper shell is provided with a first wire outlet unit, the lower shell is provided with a second wire outlet unit, the first wire outlet unit and the second wire outlet unit are attached to form a wire outlet, the waterproof pad comprises a connected waterproof body and a wire outlet body, the waterproof body is interference-fitted between the upper shell and the lower shell, the wire outlet body is provided with an avoidance opening, the avoidance opening and the wire outlet are arranged opposite to each other, the avoidance opening and the wire outlet are used for the wire harness to pass through, the upper shell is provided with a accommodating groove, and a partial structure of the wire outlet body is located in the accommodating groove, so that the wire outlet body is in positive pressure and side pressure contact with the upper shell.

[0033] In the above-mentioned antenna waterproof structure, the upper shell and the lower shell are welded, the circuit board is installed in the lower shell, the antenna and the circuit board are electrically connected, and the waterproof pad includes a connected wire body and a waterproof body. The waterproof body is interference-fitted between the upper shell and the lower shell. The upper shell is provided with a receiving groove, and the structure of the wire body is located in the receiving groove. In this way, the structure of the wire body outside the receiving groove is in positive pressure contact with the upper shell, and the structure of the wire body inside the receiving groove is in side pressure contact with the upper shell. Specifically, the upper shell and the lower shell are welded to seal the upper shell and the lower shell, and the waterproof pad is interference-fitted between the upper shell and the lower shell. That is, the waterproof pad eliminates the step of screwing and fixing, thereby improving production efficiency. The wire body and the upper shell are in contact through positive pressure and side pressure, that is, the wire body and the upper shell are pressed tightly in multiple directions, thereby improving the waterproof effect of the wire body at the wire outlet.

[0034] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0035] like Figures 1 to 4 As shown, an antenna waterproof structure 10a of an embodiment includes a housing 100, a waterproof pad 200, an antenna 300 and a circuit board 400, wherein the antenna 300 and the circuit board 400 are both housed in the housing 100; the housing 100 includes an upper housing 110 and a lower housing 120, wherein the upper housing 110 and the lower housing 120 are welded, and the circuit board 400 is mounted on the lower housing 120, wherein the antenna 300 is electrically connected to the circuit board 400, and the upper housing 110 is provided with a first outlet unit 111, and the lower housing 120 is provided with a second outlet unit 121, wherein the first outlet unit 111 and the second outlet unit 121 are bonded to form an outlet port 100. a. The waterproof pad 200 includes a waterproof body 210 and a wire outlet body 220 connected to each other. The waterproof body 210 is in interference fit between the upper shell 110 and the lower shell 120. The wire outlet body 220 is provided with a relief opening 221. The relief opening 221 is arranged opposite to the wire outlet 100a. The relief opening 221 and the wire outlet 100a are used for the wire harness 10b to pass through. The upper shell 110 is provided with a receiving groove 112. Part of the structure of the wire outlet body 220 is located in the receiving groove 112, so that the wire outlet body 220 is in positive pressure and side pressure contact with the upper shell 110, that is, the wire outlet body 220 is pressed against the shell 100 in multiple directions.

[0036] In this embodiment, the upper shell 110 and the lower shell 120 are welded to form a whole to improve the waterproof ability. Since the wire outlet 100a needs to be wired out, it is necessary to waterproof it through a waterproof pad 200. Specifically, the waterproof pad 200 includes a waterproof body 210 and a wire outlet body 220. The waterproof body 210 is in interference fit between the upper shell 110 and the lower shell 120, that is, the waterproof body 210 and the upper shell 110 are positively pressure-proof, that is, the waterproof body 210 is subjected to pressure in the Z direction. Furthermore, the upper shell 110 is provided with a receiving groove 112, and part of the structure of the wire outlet body 220 is located in the receiving groove 112. In this way, the structure of the wire outlet body 220 located in the receiving groove 112 is subjected to pressure from the groove walls on both sides, that is, the wire outlet body 220 is subjected to pressure from the groove walls on both sides. The structure of the wire body 220 located in the accommodating groove 112 is waterproofed by side pressure, that is, the structure of the wire body 220 located in the accommodating groove 112 is subjected to pressure in the X and Y directions, while the structure of the wire body 220 located outside the accommodating groove 112 and the upper shell 110 are waterproofed by positive pressure, that is, the structure of the wire body 220 located outside the accommodating groove 112 is subjected to pressure in the Z direction. In this way, the wire body 220 is pressed tightly against the shell 100 in multiple directions through positive pressure and side pressure, thereby improving the waterproof performance of the wire outlet 100a of the shell 100.

[0037] In the above-mentioned antenna waterproof structure 10a, the upper shell 110 and the lower shell 120 are welded, the circuit board 400 is installed on the lower shell 120, the antenna 300 is electrically connected to the circuit board 400, and the waterproof pad 200 includes a connected wire body 220 and a waterproof body 210. The waterproof body 210 is interference-fitted between the upper shell 110 and the lower shell 120. The upper shell 110 is provided with a receiving groove 112, and the structure of the wire body 220 is located in the receiving groove 112. In this way, the structure of the wire body 220 located outside the receiving groove 112 is in positive pressure contact with the upper shell 110, and the structure of the wire body 220 located inside the receiving groove 112 is in side pressure contact with the upper shell 110. Specifically, the upper shell 110 and the lower shell 120 are welded so that the upper shell 110 and the lower shell 120 are sealed, and the waterproof pad 200 is interference-fitted between the upper shell 110 and the lower shell 120, that is, the waterproof pad 200 eliminates the step of fixing with screws, thereby improving production efficiency. The wire outlet body 220 and the upper shell 110 are abutted by positive pressure and side pressure, that is, the wire outlet body 220 and the upper shell 110 are pressed tightly in multiple directions, thereby making the waterproof effect of the wire outlet body 220 at the wire outlet 100a better.

[0038] In one embodiment, the waterproof body 210 and the outlet body 220 are integrally formed. In this embodiment, the waterproof body 210 and the outlet body 220 are integrally injection molded, making the structure between the waterproof body 210 and the outlet body 220 more compact and having higher structural strength.

[0039] In one embodiment, the upper shell 110 and the lower shell 120 are ultrasonically welded. In this embodiment, the upper shell 110 and the lower shell 120 are ultrasonically welded to form a whole, thereby improving the sealing between the upper shell 110 and the lower shell 120.

[0040] like Figure 4 As shown, in one embodiment, the waterproof body 210 is provided with a reinforcing rib 211 on one side adjacent to the upper shell 110. It can be understood that the reinforcing rib 211 improves the structural strength of the waterproof body 210 to prevent the waterproof body 210 from being damaged when the upper shell 110 and the lower shell 120 are in interference fit.

[0041] like Figure 4 As shown, in one embodiment, the number of the reinforcing ribs 211 is multiple, and the multiple reinforcing ribs 211 are arranged around the waterproof body 210. It can be understood that the multiple reinforcing ribs 211 are arranged around the waterproof body 210 to further improve the structural strength of the waterproof body 210.

[0042] like Figure 3 、 Figure 4 and Figure 5As shown, in one embodiment, the inner sides of the shell 100 and the waterproof pad 200 jointly form a first cavity 100b, and the first cavity 100b is used to accommodate the antenna 300 and the circuit board 400. The outer sides of the shell 100 and the waterproof pad 200 jointly form a second cavity 100c, and the outlet body 220 is provided with an exhaust groove 222 on a side adjacent to the outlet port 100a, and the exhaust groove 222 is communicated with the second cavity 100c. It can be understood that the first cavity 100b is used to accommodate the antenna 300 and the circuit board 400, that is, the waterproof performance of the first cavity 100b needs to be very high, and due to the side pressure design of the upper shell 110 and the waterproof pad 200 at the outlet 100a, the upper shell 110 needs to be provided with a accommodating groove 112, so that the second cavity 100c is inevitably formed on the outside of the upper shell 110, the lower shell 120 and the waterproof pad 200. The second cavity 100c is a non-waterproof area. In the actual production process, the production line detects the waterproof performance by testing the air tightness of the product, that is, it is only necessary to test the air tightness in the first cavity 100b. However, due to the side pressure design relationship at the outlet 100a, it is easy to mistakenly form a sealed state or a micro-leakage state in the second cavity 100c (it is impossible to reach a leakage volume of <0.2kpa). In the micro-leakage state, the airtightness test of the product fails, that is, it is easy to misjudge the product. In this embodiment, an exhaust groove 222 is provided on a side surface of the outlet body 220 adjacent to the outlet port 100a, and the exhaust groove 222 is connected to the second cavity 100c. That is, the second cavity 100c is connected to the outlet port 100a through the exhaust groove 222, so that the second cavity 100c is an open space. In this way, during the air tightness test, the equipment only detects the air tightness of the first cavity 100b, thereby improving the accuracy of the product air tightness test.

[0043] like Figure 4 As shown, in one embodiment, the exhaust groove 222 extends from the avoidance opening 221 to the side of the outlet body 220. In this embodiment, the avoidance opening 221 is used for the wiring harness 10b to pass through, and the exhaust groove 222 connects the second cavity 100c with the outlet opening 100a, making the second cavity 100c open to improve the accuracy of the product airtightness test.

[0044] like Figure 4 As shown, in one embodiment, there are multiple exhaust grooves 222, and the multiple exhaust grooves 222 are spaced apart on the outlet body 220. In this embodiment, there are two exhaust grooves 222, which are symmetrically arranged relative to the avoidance opening 221. The two exhaust grooves 222 provide better communication between the second cavity 100c and the outlet 100a, thereby avoiding the problem of misjudgment during product air tightness testing.

[0045] like Figure 6 As shown, the present application also provides a vehicle-mounted antenna 300, comprising a wiring harness 10b and the antenna waterproof structure 10a described in any of the above embodiments. The wiring harness 10b sequentially passes through the wiring outlet 100a and the avoidance opening 221 and is electrically connected to the circuit board 400. It will be understood that the wiring harness 10b sequentially passes through the wiring outlet 100a and the avoidance opening 221 and is electrically connected to the circuit board 400, so that the signal on the circuit board 400 is transmitted to the vehicle-mounted system through the wiring harness 10b.

[0046] In one embodiment, the harness 10b is in interference fit with the wall of the avoidance opening 221. It is understandable that the harness 10b is in interference fit with the wall of the avoidance opening 221 to achieve a better waterproof effect in the waterproof pad 200.

[0047] Compared with the prior art, the present disclosure has at least the following advantages:

[0048] In the above-mentioned antenna waterproof structure 10a, the upper shell 110 and the lower shell 120 are welded, the circuit board 400 is installed on the lower shell 120, the antenna 300 is electrically connected to the circuit board 400, and the waterproof pad 200 includes a connected wire body 220 and a waterproof body 210. The waterproof body 210 is interference-fitted between the upper shell 110 and the lower shell 120. The upper shell 110 is provided with a receiving groove 112, and the structure of the wire body 220 is located in the receiving groove 112. In this way, the structure of the wire body 220 located outside the receiving groove 112 is in positive pressure contact with the upper shell 110, and the structure of the wire body 220 located inside the receiving groove 112 is in side pressure contact with the upper shell 110. Specifically, the upper shell 110 and the lower shell 120 are welded so that the upper shell 110 and the lower shell 120 are sealed, and the waterproof pad 200 is interference-fitted between the upper shell 110 and the lower shell 120, that is, the waterproof pad 200 eliminates the step of fixing with screws, thereby improving production efficiency. The wire outlet body 220 and the upper shell 110 are abutted by positive pressure and side pressure, that is, the wire outlet body 220 and the upper shell 110 are pressed tightly in multiple directions, thereby making the waterproof effect of the wire outlet body 220 at the wire outlet 100a better.

[0049] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. An antenna waterproof structure, characterized in that: include: A shell, a waterproof pad, an antenna and a circuit board, wherein the antenna and the circuit board are both accommodated in the shell; the shell includes an upper shell and a lower shell, the upper shell is welded to the lower shell, the circuit board is installed on the lower shell, the antenna is electrically connected to the circuit board, the upper shell is provided with a first outlet unit, the lower shell is provided with a second outlet unit, the first outlet unit and the second outlet unit are fitted together to form an outlet, the waterproof pad includes a connected waterproof body and an outlet body, the waterproof body is interference-fitted between the upper shell and the lower shell, the outlet body is provided with an avoidance opening, the avoidance opening is arranged opposite to the outlet, the avoidance opening and the outlet are used for the wiring harness to pass through, the upper shell is provided with a receiving groove, and part of the structure of the outlet body is located in the receiving groove, so that the outlet body is in positive pressure and side pressure contact with the upper shell.

2. The antenna waterproof structure according to claim 1, characterized in that: The waterproof body and the outlet body are an integrally formed structure.

3. The antenna waterproof structure according to claim 1, characterized in that: The upper shell and the lower shell are welded by ultrasonic welding.

4. The antenna waterproof structure according to claim 1, characterized in that: A reinforcing rib is protruded from one side of the waterproof body adjacent to the upper shell.

5. The antenna waterproof structure according to claim 4, characterized in that: There are multiple reinforcing ribs, and the multiple reinforcing ribs are arranged around the waterproof body.

6. The antenna waterproof structure according to claim 1, characterized in that: The outer shell and the inner side of the waterproof pad jointly form a first cavity, which is used to accommodate the antenna and the circuit board. The outer shell and the outer side of the waterproof pad jointly form a second cavity. An exhaust groove is provided on a side of the outlet body adjacent to the outlet port, and the exhaust groove is connected to the second cavity.

7. The antenna waterproof structure according to claim 6, characterized in that: The exhaust groove extends from the avoidance opening to the side surface of the outlet body.

8. The antenna waterproof structure according to claim 6, characterized in that: There are multiple exhaust slots, and the multiple exhaust slots are arranged at intervals on the outlet body.

9. A vehicle-mounted antenna, characterized in that: The invention comprises a wiring harness and the antenna waterproof structure according to any one of claims 1 to 8, wherein the wiring harness passes through the wire outlet and the avoidance outlet in sequence and is electrically connected to the circuit board.

10. The vehicle-mounted antenna according to claim 9, characterized in that: The wire harness is in interference contact with the wall of the avoidance opening.

Images