Structure for manually and rapidly adjusting electrical downtilt angle

Abstract

The utility model relates to a structure for manually and quickly adjusting an electrical downtilt angle, which is characterized in that a knob is rotatably mounted in an end cover, a driving screw rod is fixed at the upper end of the knob, a pull rod mounting seat is fixed on the upper surface of the end cover, a pull rod fixing sleeve is mounted in the pull rod mounting seat, and an internal thread is arranged in a shaft hole at the lower end of the pull rod fixing sleeve; the lower end of the pull rod is fixed in an upper-end shaft hole of the pull rod fixing sleeve, a limiting plate is fixed to the upper end of the pull rod, and a limiting long hole is formed in the limiting plate; a bottom plate is arranged above the end cover, a phase shifter is fixed on the bottom plate, a feed circuit is arranged on a slip sheet, the slip sheet is hinged to the phase shifter, a protruding part and a limiting part are arranged at the other end of the slip sheet, the protruding part is embedded in the limiting long hole, and the arc-shaped part of the bottom plate and the arc-shaped part of the phase shifter are located in the limiting part. By manually rotating the knob, the length of a feed line from the phase shifter to each antenna array can be conveniently and quickly adjusted, so that the phase of each array is changed, and the downward inclination angle of the antenna is finally adjusted.

Description

Technical Field

[0001] The utility model belongs to the field of antennas in radio technology and specifically discloses a structure for manually and quickly adjusting an electrical downtilt angle. Background Art

[0002] With the development of mobile communications, more and more users have become aware of electromagnetic radiation and have begun to fear it, worrying that it will affect their health. This has made it difficult for communication operators to select sites for base stations and increased the cost of building sites, forcing them to choose base station addresses in places with more complex geographical environments. As the surrounding environment becomes increasingly complex, the requirements for communication antennas will become higher and higher, including the need for antennas to gradually move towards miniaturization and low cost.

[0003] Phase shifters can realize beamforming of array antennas and make the antenna downtilt angle continuously adjustable, and are essential components of base station antennas. High-gain, high-sidelobe antennas can not only effectively control the coverage range of base stations and enhance the coverage strength within the base station coverage area, but also reduce the neighboring cell interference of cellular networks and improve the quality of communication networks. Therefore, the introduction of low-cost, low insertion loss, high-gain and high-sidelobe miniaturized antennas has become a demand in this field. Summary of the invention

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a phase shifter device which can manually and conveniently and quickly adjust the electrical downtilt angle.

[0005] According to the technical solution provided by the utility model, the structure for manually and quickly adjusting the electric downtilt angle includes a knob, a pull rod, a phase shifter, a slide, a bottom plate, a limit plate, an end cover, a pull rod fixing sleeve, a pull rod mounting seat and a driving screw, and the phase shifter and the slide are both printed circuit boards;

[0006] A knob is rotatably installed in the end cover, a driving screw is fixed at the upper end of the knob, a pull rod mounting seat is fixed on the upper surface of the end cover, a pull rod fixing sleeve is slidably installed in the pull rod mounting seat, the lower end axial hole of the pull rod fixing sleeve is provided with an internal thread, the internal thread of the lower end axial hole of the pull rod fixing sleeve is meshed with the external thread of the driving screw, the lower end of the pull rod is fixed inside the upper end axial hole of the pull rod fixing sleeve, a front limit plate and a rear limit plate are fixed at the upper end of the pull rod, and each limit plate is provided with a left limit long hole and a right limit long hole;

[0007] A front bottom plate and a rear bottom plate are provided above the end cover, and the two bottom plates are fixed together. A left phase shifter and a right phase shifter are fixed on the front surface of each bottom plate. A slide is hinged on each phase shifter through a pin shaft, and a feeding circuit is provided on each slide. The slide is coupled with the corresponding phase shifter, and a protrusion and a limiting portion are provided at the other end of the slide. The protrusion is embedded in the corresponding limiting long hole of the corresponding limiting plate. The bottom plate and the phase shifter at one end of the corresponding protrusion are both arc-shaped, and the arc-shaped parts of the bottom plate and the phase shifter are in the limiting portion.

[0008] Preferably, a guide groove is provided on the left outer circle and the right outer circle of the pull rod fixing sleeve, and the length direction of the guide groove is the same as the length direction of the pull rod; a left guide strip and a right guide strip are provided on the pull rod mounting seat; and the guide strips are embedded in the corresponding guide grooves.

[0009] By manually turning the knob in the utility model, the length of the feed line from the phase shifter to each antenna array can be conveniently and quickly adjusted, thereby changing the phase of each array and ultimately adjusting the downtilt angle of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the front view of the utility model.

[0011] Figure 2 It is a cross-sectional view of the pull rod in the utility model.

[0012] Figure 3 It is one of the three-dimensional diagrams of the present utility model.

[0013] Figure 4 It is the second stereogram of the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the utility model.

[0015] A structure for manually and quickly adjusting the electrical downtilt angle, such as Figure 1-Figure 4 As shown, it includes a knob 1, a pull rod 2, a phase shifter 3, a slide 4, a bottom plate 5, a limit plate 6, an end cover 7, a pull rod fixing sleeve 8, a pull rod mounting seat 9 and a driving screw 10, and the phase shifter 3 and the slide 4 are both printed circuit boards;

[0016] A knob 1 is rotatably installed in the end cover 7, a driving screw 10 is fixed at the upper end of the knob 1, a pull rod mounting seat 9 is fixed on the upper surface of the end cover 7, a pull rod fixing sleeve 8 is slidably installed in the pull rod mounting seat 9, the lower end axial hole of the pull rod fixing sleeve 8 is provided with an internal thread, the internal thread of the lower end axial hole of the pull rod fixing sleeve 8 is meshed with the external thread of the driving screw 10, the lower end of the pull rod 2 is fixed inside the upper end axial hole of the pull rod fixing sleeve 8, and a front and rear limiting plate 6 are fixed to the upper end of the pull rod 2, and each limiting plate 6 is provided with a left and right limiting long hole 6.1;

[0017] A front bottom plate 5 and a rear bottom plate 5 are provided above the end cover 7. The two bottom plates 5 are fixed together. A left phase shifter 3 and a right phase shifter 3 are fixed on the front surface of each bottom plate 5. A slide 4 is hinged on each phase shifter 3 through a pin shaft. A feeding circuit is provided on each slide 4. The slide 4 is coupled with the corresponding phase shifter 3. A protrusion 4.1 and a limiting portion 4.2 are provided at the other end of the slide 4. The protrusion 4.1 is embedded in the corresponding limiting long hole 6.1 of the corresponding limiting plate 6. The bottom plate 5 and the phase shifter 3 at one end of the corresponding protrusion 4.1 are both arc-shaped, and the arc-shaped parts of the bottom plate 5 and the phase shifter 3 are in the limiting portion 4.2.

[0018] A guide groove 8.1 is provided on the left and right outer circles of the pull rod fixing sleeve 8, and the length direction of the guide groove 8.1 is the same as the length direction of the pull rod 2; a left and right guide strip 9.1 is provided on the pull rod mounting seat 9; the guide strip 9.1 is embedded in the corresponding guide groove 8.1.

[0019] During operation, by manually turning the knob 1, the pull rod fixing sleeve 8 moves up and down under the guidance of the guide groove 8.1 and the guide strip 9.1 on the pull rod mounting seat 9, and the pull rod fixing sleeve 8 moves the pull rod 2 up and down, thereby causing the limit plate 6 to move up and down. Since one end of the slide 4 is hinged on the phase shifter 3 through a pin shaft, the raised portion 4.1 at the other end of the slide 4 is limited in the limit long hole 6.1 of the limit plate 6, and the bottom plate 5 and the arc-shaped portion of the phase shifter 3 are in the limit portion 4.2. When the pull rod 2 drives the limit plate 6 to move up and down, it also drives the slide 4 to rotate around the pin shaft. Through the limit portion 4.2, the slide 4 can press the phase shifter 3 when it rotates around the pin shaft. At the same time, since the slide 4 has a feeder line, the feeder line length of each antenna array can be adjusted by rotating the slide 4, thereby changing the phase of each array and finally adjusting the downtilt angle of the antenna.

[0020] The phase shifter 3 and the slider 4 in the present invention are both in the form of printed circuit boards, which can effectively reduce the volume.

[0021] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A structure for manually and quickly adjusting the electrical downtilt angle, characterized by: It comprises a knob (1), a pull rod (2), a phase shifter (3), a slide plate (4), a base plate (5), a limit plate (6), an end cover (7), a pull rod fixing sleeve (8), a pull rod mounting seat (9) and a driving screw rod (10), and the phase shifter (3) and the slide plate (4) are both printed circuit boards; A knob (1) is rotatably mounted in the end cover (7), a driving screw (10) is fixed at the upper end of the knob (1), a pull rod mounting seat (9) is fixed on the upper surface of the end cover (7), a pull rod fixing sleeve (8) is slidably mounted in the pull rod mounting seat (9), an internal thread is provided in the lower end axial hole of the pull rod fixing sleeve (8), the internal thread of the lower end axial hole of the pull rod fixing sleeve (8) is meshed with the external thread of the driving screw (10), the lower end of the pull rod (2) is fixed inside the upper end axial hole of the pull rod fixing sleeve (8), a front limit plate (6) and a rear limit plate (6) are fixed at the upper end of the pull rod (2), and each limit plate (6) is provided with a left limit long hole (6.1) and a right limit long hole (6.1); A front bottom plate (5) and a rear bottom plate (5) are provided above the end cover (7). The two bottom plates (5) are fixed together. A left phase shifter (3) and a right phase shifter (3) are fixed on the front surface of each bottom plate (5). A sliding plate (4) is hingedly connected to each phase shifter (3) via a pin shaft. A feeding circuit is provided on each sliding plate (4). The sliding plate (4) is coupled with the corresponding phase shifter (3). A protrusion (4.1) and a limiting portion (4.2) are provided at the other end of the sliding plate (4). The protrusion (4.1) is embedded in a corresponding limiting long hole (6.1) of a corresponding limiting plate (6). The bottom plate (5) and the phase shifter (3) at one end of the corresponding protrusion (4.1) are both arc-shaped. The arc-shaped portions of the bottom plate (5) and the phase shifter (3) are located in the limiting portion (4.2).

2. The structure for manually adjusting the electrical downtilt angle quickly as claimed in claim 1 is characterized in that: A guide groove (8.1) is respectively formed on the left outer circle and the right outer circle of the pull rod fixing sleeve (8), and the length direction of the guide groove (8.1) is the same as the length direction of the pull rod (2); a left guide strip (9.1) and a right guide strip (9.1) are respectively formed on the pull rod mounting seat (9); and the guide strips (9.1) are embedded in the corresponding guide grooves (8.1).

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