Drive test unit receiving antenna

Abstract

The utility model discloses a road test unit receiving antenna, comprising a housing with an elliptical cross section; the rudder plate is fixedly connected to the housing in the extending direction of the housing, and the plane where the rudder plate is located is parallel to the first direction; the tail end of the cover shell is open, the end cover covers the tail end of the cover shell in a sealing mode, and the end cover is fixedly connected with the cover shell; the end cover is rotationally arranged on the mounting base, and the rotating axis of the end cover coincides with the axis of the housing. The housing with the elliptical cross section enables the antenna to have a streamline shape, the area of a windward side is reduced, airflow can smoothly pass through the two sides of the antenna, and the stress of the antenna in strong wind is reduced, so that the windproof performance of the antenna is improved, and the damage probability of the antenna is reduced; the arrangement of the rudder plate enables the antenna to follow the wind direction, enables the windward side of the antenna to face the incoming wind all the time, guarantees a smaller windward side area, and improves the windproof performance of the antenna.

Description

Technical Field

[0001] This utility model belongs to the field of antenna technology, and in particular relates to a receiving antenna for a road test unit. Background Technology

[0002] Roadside units are key devices for realizing intelligent road and vehicle-road collaboration. They are installed on the roadside and communicate and exchange data with nearby passing vehicles in two directions. They are an important device in intelligent transportation systems, and antennas play a crucial role in the information transmission of roadside units.

[0003] Existing road test units are usually installed outdoors. When encountering strong winds, the wind force may cause the azimuth and elevation angles of the antenna to deviate, affecting the accuracy of signal reception and transmission. It may also cause the antenna support to loosen, deform, or even be damaged, making the antenna unable to work properly.

[0004] Therefore, it is necessary to improve the receiving antenna of the road test unit in the existing technology. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a road test unit receiving antenna that improves the wind resistance performance of the antenna.

[0006] To achieve the above objectives, the specific technical solution of the receiving antenna of the road test unit of this utility model is as follows:

[0007] A road test unit receiving antenna, comprising:

[0008] The shell has an elliptical cross-section. The direction of extension along the major axis of the elliptical cross-section is the first direction, and the direction of extension along the minor axis of the elliptical cross-section is the second direction. The front and rear sides of the shell along the first direction are the windward side and the leeward side, respectively.

[0009] A rudder plate is fixedly connected to the leeward side of the housing along the extension direction of the housing, and the plane on which the rudder plate is located is parallel to the first direction.

[0010] An end cap is provided at the open end of the cover, and the end cap is sealed and fixedly connected to the cover.

[0011] Mounting base, the end cap is rotatably mounted on the mounting base, and the rotation axis of the end cap coincides with the axis of the cover.

[0012] Preferably, at least one of the two sides of the cover along the second direction is provided with a side plate, the side plate is arranged parallel to the first direction, and the side plate is fixedly connected to the rudder plate.

[0013] Preferably, multiple side plates are provided, and the side plates are parallel to each other and arranged along the axial direction of the cover.

[0014] Preferably, the cover is provided with side plates on both sides along the second direction, and the side plates on both sides of the cover are arranged to support each other.

[0015] Preferably, the side plate has a plurality of through holes evenly distributed thereon.

[0016] Preferably, the end cap includes a cover plate fixedly connected to the housing, the cover plate is fixedly connected to a connecting pipe coaxially arranged with the housing, and the cover plate is also fixedly connected to a sealing plug that is sealed and inserted into the housing.

[0017] Preferably, the mounting base includes a threaded tube coaxially arranged with the connecting tube, the connecting tube passing through the threaded tube, and the connecting tube and the threaded tube being connected by a bearing.

[0018] Preferably, a sealing ring is also provided between the connecting pipe and the threaded pipe.

[0019] Preferably, a torsion spring is further provided between the connecting pipe and the threaded pipe, and the two ends of the torsion spring are fixedly connected to the connecting pipe and the threaded pipe respectively.

[0020] Preferably, a protective cover is fixedly connected to the end of the threaded tube near the cover, and the end cap is located inside the protective cover.

[0021] The road test unit receiving antenna of this utility model has the following advantages: the elliptical cross-section of the cover gives the antenna a streamlined shape, which reduces the windward area and allows airflow to pass smoothly through both sides of the antenna, reducing the force on the antenna in strong winds, thereby improving the antenna's windproof performance and reducing the probability of antenna damage; the rudder plate allows the antenna to follow the wind direction, ensuring that the windward side of the antenna is always facing the wind, thus ensuring a smaller windward area and improving the antenna's windproof performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the antenna structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the mounting base of this utility model;

[0024] Figure 3 This is a schematic diagram of the connection structure between the mounting base and the end cap of this utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure between the housing and the antenna body of this utility model;

[0026] Figure 5 This is a cross-sectional view of the housing of this utility model;

[0027] Figure 6 for Figure 4 Enlarged view of part A;

[0028] The markings in the diagram are as follows: 1. Cover; 2. Mounting base; 3. End cap; 4. Antenna body; 5. Bearing; 6. Torsion spring; 7. Sealing ring; 101. Rudder plate; 102. Side plate; 103. Through hole; 201. Threaded pipe; 202. Protective cover; 301. Connecting pipe; 302. Cover plate; 303. Sealing plug. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0030] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the receiving antenna of the road test unit. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] like Figure 1 and 5 As shown, a road test unit receiving antenna includes:

[0032] The shell 1 has an elliptical cross-section. The direction of extension along the major axis of the elliptical cross-section is the first direction, and the direction of extension along the minor axis of the elliptical cross-section is the second direction. The front and rear sides of the shell 1 along the first direction are the windward side and the leeward side, respectively.

[0033] The rudder plate 101 is fixedly connected to the leeward side of the cover 1 along the extension direction of the cover 1, and the plane on which the rudder plate 101 is located is parallel to the first direction.

[0034] End cap 3 is provided at the open end of the cover 1, and the end cap 3 is sealed and covered at the end of the cover 1. The end cap 3 is fixedly connected to the cover 1.

[0035] Mounting base 2, end cover 3 is rotatably mounted on mounting base 2, the rotation axis of end cover 3 coincides with the axis of the cover 1.

[0036] The aforementioned antenna has good wind resistance and is suitable for outdoor installations such as road test units for signal transmission. The antenna main board 4 is inserted into the inside of the housing 1. The opening of the housing 1 is sealed by a fixed end cap 3, forming a sealed space inside the housing 1 to protect the antenna main board 4. The mounting base 2 is used to connect the housing 1 to the road test unit and support the rotation of the housing 1, thereby enabling the antenna to be installed and removed from the road test unit. When used outdoors, the elliptical columnar housing 1 has a streamlined shape. In strong winds, its windward side area is smaller, and the streamlined shape allows airflow to pass smoothly from both sides, reducing the force of airflow on the housing 1, improving the antenna's wind resistance, and reducing the probability of damage to the antenna in windy weather. The rudder plate 101 allows the housing 1 to rotate with the wind direction, ensuring that its windward side always faces the wind, thus keeping the housing 1 under less force in the wind and further improving the antenna's wind resistance.

[0037] When in use, the aforementioned antenna is usually vertically installed below the road test unit. In this way, when encountering rain, snow, hail, or other weather conditions, the housing of the road test unit can shield the antenna, thereby further protecting it and reducing the chance of damage.

[0038] Further improvements include, for example Figure 4 As shown, at least one of the two sides of the housing 1 along the second direction is provided with a side plate 102. The side plate 102 is arranged parallel to the first direction and is fixedly connected to the rudder plate 101. The side plate 102 is provided to reinforce the connection between the rudder plate 101 and the housing 1, improve the strength of the connection between the two, and thus improve the overall strength of the antenna. This allows the antenna to better resist external forces on the roadside and reduces the probability of antenna damage.

[0039] Further improvements include, for example Figure 4 As shown, multiple side plates 102 are provided, and each side plate 102 is parallel to each other and arranged along the axial direction of the housing 1. The arrangement of multiple side plates 102 can further improve the firmness of the connection between the rudder plate 101 and the housing 1, improve the overall strength of the antenna, and the multiple side plates 102 can cover a larger area of ​​the side of the antenna. When the antenna encounters external force, the deformation of the side plates 102 can absorb the impact energy, thereby reducing the force on the antenna main board 4 and improving the antenna's impact resistance. Furthermore, the housing 1 and the side plates 102 can both be made of metal materials with strong heat dissipation performance, such as aluminum alloy, so that the side plates 102 can act as heat dissipation fins, giving the antenna better thermal management performance and thus improving the antenna's performance in hot weather.

[0040] Further improvements include, for example Figure 4As shown, side plates 102 are provided on both sides of the housing 1 along the second direction, and the side plates 102 on both sides of the housing 1 are arranged to support each other. The side plates 102 on both sides of the housing 1 can further improve the antenna's shock resistance and heat dissipation performance, and ultimately improve the antenna's performance in adapting to harsh outdoor environments.

[0041] Further improvements include, for example Figure 6 As shown, multiple through holes 103 are evenly distributed on the side plate 102. The through holes 103 can reduce the weight of the side plate 102, reduce the probability of water accumulation on the side plate 102, slow down the corrosion of the side plate 102, and extend the service life of the antenna.

[0042] Further improvements include, for example Figure 2 and 3 As shown, the end cap 3 includes a cover plate 302 fixedly connected to the housing 1. A connecting tube 301, coaxially arranged with the housing 1, is fixedly connected to the cover plate 302. A sealing plug 303, which seals with the housing 1, is also fixedly connected to the cover plate 302. The cover plate 302 can be fixed to the housing 1 with bolts. The sealing plug 303 is inserted into the opening at the end of the housing 1. The sealing plug 303 can be made of rubber to improve the sealing performance between the cover plate 302 and the housing 1. The sealing plug 303 can have a through-hole for the signal line to pass through the antenna mainboard 4. After the sealing plug 303 is inserted into the housing 1, it is compressed and deformed, closing the through-hole and achieving a seal with the signal line, thus improving the antenna's waterproof performance. The connecting tube 301 can be used to pass the signal line through the roadside unit, extending directly into the roadside unit to introduce the signal line inside, thus better protecting the signal line and reducing the antenna's failure rate.

[0043] Further improvements include, for example Figure 2 and 3 As shown, the mounting base 2 includes a threaded tube 201 coaxially arranged with the connecting tube 301. The connecting tube 301 passes through the threaded tube 201, and the connecting tube 301 and the threaded tube 201 are connected by a bearing 5. The threaded tube 201 can be threaded into a threaded hole on the road test unit to facilitate the installation and removal of the antenna on the road test unit. The connecting tube 301 extends through the threaded tube 201 into the interior of the road test unit. The bearing 5 allows the connecting tube 301 to rotate freely around its own axis, thereby allowing the housing 1 to rotate to follow the wind direction and improve the antenna's windproof performance.

[0044] Further improvements include, for example Figure 2 and 3As shown, a sealing ring 7 is also provided between the connecting pipe 301 and the threaded pipe 201. The sealing ring 7 is made of rubber. The sealing ring 7 can achieve a seal between the connecting pipe 301 and the threaded pipe 201, thereby improving the sealing performance at the connection between the road test unit and the antenna. At the same time, the sealing ring 7 can also provide some resistance to the rotation of the connecting pipe 301, so that the housing 1 will not rotate under small wind forces, thereby ensuring the stability of antenna signal transmission.

[0045] Further improvements include, for example Figure 2 and 3 As shown, a torsion spring 6 is also provided between the connecting tube 301 and the threaded tube 201. The two ends of the torsion spring 6 are fixedly connected to the connecting tube 301 and the threaded tube 201, respectively. The torsion spring 6 can realize the reset of the connecting tube 301, prevent the cover 1 from continuously rotating in one direction, reduce the probability of the signal line being twisted off or the connection falling off during the continuous rotation of the cover 1, and improve the stability of the antenna operation.

[0046] Further improvements include, for example Figure 2 and 3 As shown, a protective cover 202 is fixedly connected to the end of the threaded tube 201 near the housing 1, and the end cap 3 is located inside the protective cover 202. When the antenna is vertically installed at the bottom of the road test unit, the protective cover 202 can protect the connection between the end cap 3 and the housing 1, reducing the antenna failure rate.

[0047] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A receiving antenna for a road test unit, characterized in that, include: The cover (1) has an elliptical cross-section. The direction of extension along the major axis of the elliptical cross-section is the first direction, and the direction of extension along the minor axis of the elliptical cross-section is the second direction. The front and rear sides of the cover (1) along the first direction are the windward side and the leeward side, respectively. A rudder plate (101) is fixedly connected to the leeward side of the cover (1) along the extension direction of the cover (1), and the plane on which the rudder plate (101) is located is parallel to the first direction. End cap (3), the end of the cover (1) is open, the end cap (3) is sealed and covered on the end of the cover (1), and the end cap (3) is fixedly connected to the cover (1); Mounting base (2), the end cap (3) is rotatably mounted on the mounting base (2), and the rotation axis of the end cap (3) coincides with the axis of the cover (1).

2. The receiving antenna of the road test unit according to claim 1, characterized in that, The cover (1) has a side plate (102) on at least one of its two sides along the second direction. The side plate (102) is parallel to the first direction and is fixedly connected to the rudder plate (101).

3. The road test unit receiving antenna according to claim 2, characterized in that, Multiple side plates (102) are provided, and each side plate (102) is parallel to each other and arranged along the axial direction of the cover (1).

4. The road test unit receiving antenna according to claim 3, characterized in that, The cover (1) is provided with side plates (102) on both sides along the second direction, and the side plates (102) on both sides of the cover (1) are supported by each other.

5. The road test unit receiving antenna according to any one of claims 2-4, characterized in that, The side plate (102) has a plurality of through holes (103) evenly distributed on it.

6. The receiving antenna of the road test unit according to claim 1, characterized in that, The end cap (3) includes a cover plate (302) fixedly connected to the cover (1), the cover plate (302) is fixedly connected to a connecting pipe (301) coaxially arranged with the cover (1), and the cover plate (302) is also fixedly connected to a sealing plug (303) that is sealed and inserted into the cover (1).

7. The road test unit receiving antenna according to claim 6, characterized in that, The mounting base (2) includes a threaded pipe (201) coaxially arranged with the connecting pipe (301), the connecting pipe (301) passing through the threaded pipe (201), and the connecting pipe (301) and the threaded pipe (201) being connected by a bearing (5).

8. The road test unit receiving antenna according to claim 7, characterized in that, A sealing ring (7) is also provided between the connecting pipe (301) and the threaded pipe (201).

9. The road test unit receiving antenna according to claim 7, characterized in that, A torsion spring (6) is also provided between the connecting pipe (301) and the threaded pipe (201), and the two ends of the torsion spring (6) are fixedly connected to the connecting pipe (301) and the threaded pipe (201) respectively.

10. The road test unit receiving antenna according to claim 7, characterized in that, The threaded tube (201) is fixedly connected to a protective cover (202) at the end near the cover (1), and the end cap (3) is located inside the protective cover (202).

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