CN114221131A

CN114221131A - Downtilt display device and antenna

Info

Publication number: CN114221131A
Application number: CN202111636406.5A
Authority: CN
Inventors: 林贤俊; 杨仲凯; 吴立曹
Original assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-03-22

Abstract

The invention discloses a downward inclination angle display device and an antenna, wherein the downward inclination angle display device comprises a dial, a screw, a nut and an indicating piece, wherein the dial is fixedly arranged; the screw rod can move with the expansion of the dielectric plate of the phase shifter; the nut is in threaded fit with the screw, and the screw can be driven to rotate when moving telescopically; the indicating piece is in transmission fit with the nut and is provided with an indicating part, and the nut can drive the indicating piece to rotate when rotating so as to enable the indicating part to indicate on the dial disc; the antenna comprises the downward inclination angle display device. When the electricity is transferred and is declined, the dielectric plate removes and drives the screw rod and remove, because screw rod and nut spiro union cooperation to drive the nut through the flexible of screw rod and rotate, drive the indicator when the nut rotates and rotate, and the instruction portion of indicator can instruct the scale on the calibrated scale, thereby realize the regulation range show that the electricity was transferred and is declined, so that the staff directly perceived experiences the regulation range, and simple structure, and the cost is also low.

Description

Downtilt display device and antenna

Technical Field

The invention relates to the technical field of communication equipment, in particular to a downward inclination angle display device and an antenna.

Background

In the base station antenna, the adjustment of the downtilt angle mainly has two modes of mechanical downtilt and electrical downtilt. The principle of the electric tilt down-tilt is that the phase of a phase shifter is changed, the phase of a collinear array antenna element is changed, the amplitude of a vertical component and the amplitude of a horizontal component are changed, the field intensity of a synthesized component is changed, and then a vertical directional diagram of an antenna is down-tilted; the operation of electrical tilt down is very complex and therefore the antenna tilt down angle is not typically mechanically adjusted after the antenna installation is complete.

However, although the adjustment mode of the electrical tilt down adjustment is very simple in operation, the adjustment amplitude cannot be directly sensed or observed by the staff.

Disclosure of Invention

Accordingly, there is a need for a downtilt display device and an antenna; the downtilt angle display device is simple in structure, and can display the adjustment amplitude of the electrically adjusted downtilt so that workers can feel intuitively; the antenna comprises the downward inclination angle display device, so that a worker can intuitively feel the adjustment range of the downward inclination angle.

The technical scheme is as follows:

one embodiment provides a downtilt display device including:

the dial is fixedly arranged;

the screw rod can move along with the expansion and contraction of the dielectric plate of the phase shifter;

the nut is in threaded connection and matched with the screw, and the screw can be driven to rotate when moving telescopically;

the indicating part, the indicating part with nut transmission fit, the indicating part is equipped with the instruction portion, the nut can drive when rotating the indicating part rotates, so that the instruction portion is in instruct on the calibrated scale.

Above-mentioned declination angle display device, when electricity transfer when having a down dip, the dielectric plate removes and drives the screw rod and remove, because screw rod and nut spiro union cooperation to drive the nut through the flexible of screw rod and rotate, drive the indicator when the nut rotates and rotate, and the instruction part of indicator can instruct the scale on the calibrated scale, thereby realize the amplitude of regulation show that has a down dip to electricity transfer, so that the staff directly perceived experiences amplitude of regulation, and simple structure, it is also low with costs.

The technical solution is further explained below:

in one embodiment, the downward inclination angle display device further comprises an adapter, the adapter is connected with the nut and can rotate along with the nut, and the adapter is in transmission fit with the indicating piece so that the adapter drives the indicating piece to rotate.

In one embodiment, the adapter has an adapter toothing and the indicator has an abutment toothing, which is in meshing engagement with the adapter toothing.

In one embodiment, the total stroke of the screw is L, the lead of the nut is a, L is a × N, and the reduction ratio between the indicating member and the adaptor is N, so that the starting position of the screw corresponds to the starting scale indicated by the indicating part on the dial, and the ending position of the screw corresponds to the ending scale indicated by the indicating part on the dial; wherein N is an integer equal to or greater than 1.

In one embodiment, the screw rod is provided with a connecting part and a driving part, the connecting part and the driving part are respectively positioned at two opposite ends of the screw rod, the connecting part is used for being connected with the medium plate or connected with an intermediate piece for driving the medium plate to move, and the driving part is used for being screwed with the nut so as to drive the nut to rotate;

the driving part is provided with a driving surface, the nut is provided with a thread groove corresponding to the driving surface, and the screw rod moves in a telescopic mode and enables the driving surface to move along the driving groove so as to enable the screw rod to drive the nut to rotate.

In one embodiment, the declination angle display device further comprises a first mounting seat and a second mounting seat, and the first mounting seat and the second mounting seat are arranged at intervals;

the dial is fixedly arranged on the first mounting seat, the indicating piece is rotatably arranged on the first mounting seat, and the indicating part is positioned at one end, far away from the nut, of the indicating piece;

the two opposite ends of the nut are respectively in limit fit with the first mounting seat and the second mounting seat, so that the nut can rotate relative to the first mounting seat and the second mounting seat when the screw rod moves in a telescopic mode.

In one embodiment, the dial is provided with a dial body and a mounting column, the mounting column is fixed with the first mounting seat, the mounting column is provided with a first mounting through hole, the first mounting through hole penetrates through the first mounting seat and the dial body, and the indicator is in rotating fit with the dial through the first mounting through hole; the indicating part is a needle-shaped flange arranged on the end face of the indicating piece far away from the nut.

In one embodiment, the downward inclination angle display device further comprises a limit bearing, the limit bearing is arranged on the first mounting seat, and the adapter is in running fit with the limit bearing;

the inner wall of nut is equipped with the mounting groove, the mounting groove is followed the length direction setting of nut, the adaptor is equipped with transmission portion, transmission portion passes through the mounting groove with the spacing cooperation of nut, so that the nut drives when rotating the adaptor rotates.

In one embodiment, the transmission part and the adapting tooth part are respectively located at two opposite ends of the adapting piece, and the limit bearing or the first mounting seat is provided with a receiving groove which is used for receiving at least one part of the adapting tooth part and enabling the adapting tooth part to be meshed with the butting tooth part.

In one embodiment, the second mounting seat is provided with a second mounting through hole, the wall of the second mounting through hole is provided with a first limiting step, and the first limiting step is arranged along the circumference of the second mounting through hole; the nut is provided with a second limiting step which is arranged around the periphery of the nut and is in limiting fit with the first limiting step;

the second mount pad is equipped with screens position, the nut is equipped with the spacing step of third, the spacing step of third encircles the periphery setting of nut, the spacing step of third with the spacing step of second is the interval setting, so that the spacing step of third with form the screens groove between the spacing step of second, the screens groove is followed the periphery setting of nut, screens position in the screens inslot and with the spacing cooperation of nut.

Another embodiment provides an antenna comprising the downtilt display apparatus according to any of the above-mentioned aspects.

Above-mentioned antenna adopts aforementioned angle of declination display device, when the electricity is transferred and is declined, move the dielectric plate that moves looks ware and drive the screw rod and remove, because screw rod and nut spiro union cooperation to drive the nut through the flexible of screw rod and rotate, drive the indicator when the nut rotates and rotate, and the instruction portion of indicator can instruct the scale on the calibrated scale, thereby realize the regulation range show that the electricity was transferred and is declined, so that the staff directly perceived impression regulation range, and simple structure, it is also low cost.

The technical solution is further explained below:

in one embodiment, the number of the medium plates is at least two, and the dial, the indicating piece, the screw rod and the nut are all at least two and correspond to the medium plates one to one.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Furthermore, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements in the drawings are drawn only by way of example, and not necessarily to true scale.

FIG. 1 is a schematic diagram of an overall structure of a down-tilt display device according to an embodiment of the present invention;

FIG. 2 is a sectional view of the overall structure of a declination angle display device in the embodiment of FIG. 1;

FIG. 3 is an assembly view of the first mount, dial, indicator and nut of the embodiment of FIG. 1;

FIG. 4 is an assembly view of the first mount, dial, indicator, nut, adaptor and limit bearing of the embodiment of FIG. 2;

FIG. 5 is a schematic view of the overall structure of the screw in the embodiment of FIG. 1;

FIG. 6 is a sectional view showing the overall structure of the nut of the embodiment of FIG. 1;

FIG. 7 is a first perspective view of the nut shown in the embodiment of FIG. 1;

FIG. 8 is a second perspective view of the nut shown in the embodiment of FIG. 1;

FIG. 9 is a schematic structural diagram of a second mounting seat in the embodiment of FIG. 1;

FIG. 10 is a schematic view of the overall structure of the indicator of the embodiment of FIG. 1;

FIG. 11 is a schematic view of the embodiment of FIG. 1 with the screw reaching the innermost end of the nut;

FIG. 12 is a schematic view of the screw reaching the outermost side of the nut in the embodiment of FIG. 1.

Reference is made to the accompanying drawings in which:

110. a dial scale; 111. a disc body; 112. mounting a column; 120. a screw; 121. a connecting portion; 122. a drive section; 1221. a drive face; 130. a nut; 131. a thread groove; 132. mounting grooves; 133. a second limit step; 134. a third limiting step; 135. a clamping groove; 140. an indicator; 141. an indicating section; 142. butting tooth parts; 143. a debugging tank; 150. an adapter; 151. a switching tooth part; 152. a transmission section; 160. a first mounting seat; 170. a second mounting seat; 171. a second mounting through hole; 172. a first limit step; 173. a clamping part; 174. an extension portion; 175. positioning a groove; 180. a limit bearing; 181. accommodating grooves; 190. a pointer cover plate; 200. a dielectric plate; 300. the rack is driven.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings:

in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 to 4 and fig. 10, an embodiment provides a downward inclination display device, including:

a dial 110, the dial 110 being fixedly disposed;

the screw rod 120, the screw rod 120 can move with the dielectric plate 200 of the phase shifter telescopically;

the nut 130, the nut 130 is in threaded connection with the screw 120, and the screw 120 can drive the nut 130 to rotate when moving telescopically;

the indicator 140, as shown in fig. 10, the indicator 140 is in driving fit with the nut 130, the indicator 140 is provided with an indicating part 141, and when the nut 130 rotates, the indicator 140 can be driven to rotate, so that the indicating part 141 indicates on the dial 110.

This angle of declination display device, when the electricity is transferred and is declined, dielectric plate 200 removes and drives screw rod 120 and remove, because screw rod 120 and nut 130 spiro union, thereby drive nut 130 through the flexible of screw rod 120 and rotate, drive indicator 140 when nut 130 rotates, and indicator 140's pointer 141 can instruct the scale on calibrated scale 110, thereby realize the demonstration of the regulation range that the electricity was transferred and is declined, so that the staff directly perceived experiences the regulation range, and simple structure, the cost is also low.

When the downtilt angle is adjusted, the dielectric plate 200 of the phase shifter moves in a telescopic manner, the telescopic movement of the dielectric plate 200 drives the screw rod 120 to move in a telescopic manner, and due to the fact that the screw rod 120 is in threaded connection with the nut 130, the moving movement can be converted into the rotating movement of the nut 130 by means of the telescopic movement of the screw rod 120, so that the telescopic amplitude of the screw rod 120 is reflected through the rotating amplitude of the nut 130, the telescopic amplitude of the screw rod 120 is reflected again by the telescopic amplitude of the dielectric plate 200, namely, the adjusting amplitude of the downtilt angle is reflected, and therefore the adjusting amplitude (direction, position information and the like) of the downtilt angle can be reflected through the rotating amplitude of the nut 130. The nut 130 drives the indicator 140 to rotate, so that the indicator 140 reflects the rotation amplitude to the movement amplitude of the indicator 141, and the scale on the dial 110 corresponds to the adjustment amplitude of the downtilt, so that the indicator 141 indicates the corresponding adjustment amplitude on the dial 110, and the phase adjustment amplitude of the phase shifter under the electrically tunable antenna is displayed. Meanwhile, the nut 130 is matched with the screw rod 120, and the nut 130 only rotates, so that less space can be occupied, and the overall space utilization rate of the antenna is improved.

It can be understood that:

the screw 120 is screwed with the nut 130, the nut 130 is driven to rotate by the telescopic movement of the screw 120, the nut 130 is required to be incapable of telescopic movement and only capable of rotating, the effect that the nut 130 is only capable of rotating and not capable of moving can be achieved by various modes, and the linear motion of the screw 120 is converted into the rotary motion of the nut 130, which is not described herein again.

In one embodiment, referring to fig. 2 and 4, the lower inclination angle display device further includes an adaptor 150, the adaptor 150 is connected to the nut 130 and can rotate with the nut 130, and the adaptor 150 is in transmission fit with the indicator 140, so that the adaptor 150 drives the indicator 140 to rotate.

When the nut 130 rotates, the adaptor 150 can be driven to rotate synchronously at the same amplitude, so that the rotation of the nut 130 is transmitted to the adaptor 150, and the adaptor 150 transmits the rotation to the indicator 140.

Optionally, adaptor 150 is fixedly engaged with nut 130; or adaptor 150 is in driving engagement with nut 130.

In one embodiment, referring to fig. 4 and 10, the adaptor 150 has adaptor teeth 151, the indicator 140 has docking teeth 142, and the docking teeth 142 are in meshing engagement with the adaptor teeth 151.

The transmission between the adaptor 150 and the indicator 140 is performed by means of gear engagement. As shown in fig. 4, the left end of the adaptor 150 is provided with an adaptor tooth 151, and as shown in fig. 10, the right end of the indicator 140 is provided with a mating tooth 142. As shown in fig. 4, the adaptor teeth 151 engage with the docking teeth 142 to effect driving engagement of the adaptor 150 with the indicator member 140.

In one embodiment, referring to fig. 11 and 12, the total stroke of the screw 120 is L, the lead of the nut 130 is a, L is a × N, and the reduction ratio between the indicator 140 and the adaptor 150 is N, such that the start position of the screw 120 corresponds to the start scale indicated by the indicator 141 on the dial 110, and the end position of the screw 120 corresponds to the end scale indicated by the indicator 141 on the dial 110; wherein N is an integer equal to or greater than 1.

The screw 120 reaches the leftmost position in the view shown in fig. 11, and the screw 120 reaches the rightmost position in the view shown in fig. 12. In connection with fig. 11 and 12, the maximum movement amplitude of the screw 120, i.e. the total stroke of the screw 120, is given. This total travel corresponds to the entire range of graduations on the dial 110, which refers to the range of adjustment of the downtilt angle.

If the lead of the nut 130 is a, the total stroke L of the screw 120 is set to be N (N is greater than or equal to 1) times of the lead a of the nut 130, and the reduction ratio between the indicating member 140 and the adaptor 150 is N, so that the setting is performed, when the screw 120 is in the initial position during the installation, the indicating position of the indicating part 141 on the dial 110 is the set initial scale value if the screw 120 is in the initial position, and when the screw 120 reaches the final position (i.e. the maximum movable position), the indicating position of the indicating part 141 on the dial 110 is the set final scale value, so that the screw 120 can always automatically return to zero when extending to the set limit position without manual readjustment, and the assembly is reliable, convenient and fast, and has better economic benefit.

In one embodiment, referring to fig. 5, the screw 120 has a connecting portion 121 and a driving portion 122, the connecting portion 121 and the driving portion 122 are respectively located at two opposite ends of the screw 120, the connecting portion 121 is used for connecting with the dielectric board 200 or the connecting portion 121 is used for connecting with an intermediate member that drives the dielectric board 200 to move, and the driving portion 122 is used for screwing with the nut 130 to drive the nut 130 to rotate.

As shown in fig. 5, the driving portion 122 is disposed at the left end of the screw 120, the connecting portion 121 is disposed at the right end of the screw 120, and the connecting portion 121 is used to establish a connection with the dielectric slab 200, so that the screw 120 is driven to extend and retract when the dielectric slab 200 extends and retracts.

The connection between the screw 120 and the medium plate 200 may be established directly or indirectly.

For example, the right end of the screw rod 120 may be directly connected to the screw rod 120 through the connection part 121.

For example, as shown in fig. 1, the medium plate 200 is driven by the intermediate member to move telescopically, and the screw 120 is connected to the intermediate member by the connecting portion 121, so that the intermediate member drives the medium plate 200 and the screw 120 to move telescopically in synchronization with each other at the same amplitude.

Optionally, the intermediate member is a driving rack 300, and the driving rack 300 drives the medium plate 200 and the screw 120 to synchronously move telescopically with the same amplitude during telescopic movement.

In one embodiment, referring to fig. 5 and 6, the driving portion 122 has a driving surface 1221, the nut 130 has a thread groove 131 corresponding to the driving surface 1221, and the screw 120 moves telescopically and moves the driving surface 1221 along the driving groove, so that the screw 120 drives the nut 130 to rotate.

As shown in fig. 5, the driving portion 122 is a short threaded section provided at one end of the screw 120, and when the screw 120 moves telescopically, the driving portion 122 moves along the threaded groove 131 to drive the nut 130 to rotate.

The driving portion 122 is arranged in a spiral structure, the width of the spiral structure is large, so that the surface of the driving portion 122 forms a driving surface 1221, the driving surface 1221 and the groove surface of the thread groove 131 are in surface contact, the problem of display errors caused by transmission gaps is solved, the display precision is improved, and better transmission torque is achieved.

In one embodiment, referring to fig. 1 and 2, the declination angle display device further includes a first mounting seat 160 and a second mounting seat 170, and the first mounting seat 160 and the second mounting seat 170 are spaced apart from each other.

The first mount 160 and the second mount 170 may be fixed to a plate structure or a frame structure of the antenna.

In one embodiment, referring to fig. 3 and 4, the dial 110 is fixedly disposed on the first mounting base 160, the indicator 140 is rotatably disposed on the first mounting base 160, and the indicating portion 141 is disposed at an end of the indicator 140 away from the nut 130.

In one embodiment, referring to fig. 1 and 2, opposite ends of the nut 130 are respectively engaged with the first mounting seat 160 and the second mounting seat 170 in a limiting manner, so that the nut 130 can rotate relative to the first mounting seat 160 and the second mounting seat 170 when the screw 120 moves telescopically.

As shown in fig. 2, the first and second mounting

seats

160 and 170 are respectively used for supporting both ends of the nut 130, so that both ends of the nut 130 cannot move left and right, and the nut 130 can rotate relative to the screw 120 when the screw 120 is extended and retracted.

In one embodiment, a pointer cover 190 is further provided on the first mount 160 to protect the indicator 140 and the scale 110.

In one embodiment, referring to fig. 9, the bottom of the second mounting base 170 may be provided with a positioning groove 175 for positioning when mounting.

For example, the detent 175 in FIG. 9 is a generally rectangular slot to achieve a detent fit in the XY directions, and is not described in detail.

In one embodiment, referring to fig. 3 and 4, the dial 110 has a plate body 111 and a mounting post 112, the mounting post 112 is fixed to the first mounting seat 160, the mounting post 112 has a first mounting through hole, the first mounting through hole is disposed through the first mounting seat 160 and the plate body 111, and the indicator 140 is rotatably engaged with the dial 110 through the first mounting through hole.

It can be understood that:

the indicating member 140 is disposed in a substantially cylindrical structure, and the indicating member 140 is driven by the nut 130 (and the adaptor 150) to rotate so as to change the position of the indicating portion 141 thereon, thereby indicating different scales on the dial 110; the first mounting through-hole is used to allow the indicator 140 to rotate relative to the dial 110 and to locate the indicating part 141 at the middle of the dial 110.

Of course, in another embodiment, the indication portion 141 of the indicator 140 may be located at an outer ring position of the dial 110, and when the indicator 140 is rotated, the indication portion 141 rotates on the outer ring of the dial 110 and indicates a different scale on the dial 110. In this case, the dial 110 is not required to be provided with the first mounting through hole, and the description thereof is omitted.

In one embodiment, referring to fig. 10, the indication part 141 is a pin-shaped flange provided on an end surface of the indication member 140 away from the nut 130.

In one embodiment, referring to fig. 10, the indication member 140 is further provided with a debugging slot 143, and the debugging slot 143 is used for facilitating installation and debugging of a worker during installation.

In one embodiment, referring to fig. 3 and 4, the downward inclination angle display device further includes a limit bearing 180, the limit bearing 180 is disposed on the first mounting seat 160, and the adaptor 150 is rotatably engaged with the limit bearing 180.

Alternatively, as shown in fig. 4, the limit bearing 180 is a sliding bearing fixed on the first mounting seat 160, the adaptor 150 is rotatably connected with the first mounting seat 160 through the sliding bearing, and the adaptor 150 is in transmission connection with the nut 130, and the left and right play of the nut 130 is limited by the left and right play of the adaptor 150, so that the nut 130 cannot play left and right.

In one embodiment, referring to fig. 4, 6 and 8, an installation groove 132 is formed on an inner wall of the nut 130, the installation groove 132 is formed along a length direction of the nut 130, the adaptor 150 is provided with a transmission portion 152, and the transmission portion 152 is in limit fit with the nut 130 through the installation groove 132, so that the adaptor 150 is driven to rotate when the nut 130 rotates.

As shown in fig. 6 and 8, the inner wall of the left end of the nut 130 is provided with an installation groove 132, the installation groove 132 extends along the length of the nut 130 and extends for a certain length, and the transmission part 152 of the adaptor 150 is matched with the installation groove 132, so that the nut 130 can drive the adaptor 150 to rotate when rotating, thereby realizing transmission matching.

Meanwhile, as shown in fig. 6, since the mounting groove 132 is not infinitely extended, the transmission part 152 of the adaptor 150 and the groove end of the mounting groove 132 are abutted against each other, so that the nut 130 cannot move left and right.

In one embodiment, referring to fig. 4, the transmission part 152 and the adaptor tooth part 151 are respectively located at two opposite ends of the adaptor 150, and the limit bearing 180 or the first mounting seat 160 is provided with a receiving groove 181, wherein the receiving groove 181 is used for receiving at least a portion of the adaptor tooth part 151 and engaging the adaptor tooth part 151 with the docking tooth part 142.

In one embodiment, referring to fig. 6 to 9, the second mounting seat 170 is provided with a second mounting through hole 171, a hole wall of the second mounting through hole 171 is provided with a first limiting step 172, and the first limiting step 172 is arranged along a circumference of the second mounting through hole 171; nut 130 is equipped with second spacing step 133, and second spacing step 133 encircles the periphery setting of nut 130, and second spacing step 133 is spacing with first spacing step 172 and is cooperated.

As shown in fig. 9, the second mounting through hole 171 is opened on the second mounting seat 170, and the first limiting step 172 is located on the hole wall of the first mounting through hole and is used for limiting the end of the nut 130; as shown in fig. 8, the nut 130 is provided with a second limit step 133, the diameter of the second limit step 133 is larger than the radius of the nut 130 itself, and the end of the second limit step 133 abuts against the first limit step 172 for limit matching.

In one embodiment, referring to fig. 6 to 9, the second mounting seat 170 has a retaining portion 173, the nut 130 has a third limiting step 134, the third limiting step 134 is disposed around the outer circumference of the nut 130, the third limiting step 134 and the second limiting step 133 are spaced apart from each other, so that a retaining groove 135 is formed between the third limiting step 134 and the second limiting step 133, the retaining groove 135 is disposed along the outer circumference of the nut 130, and the retaining portion 173 is located in the retaining groove 135 and is in retaining engagement with the nut 130.

As shown in fig. 9, the second mounting seat 170 is provided with a blocking portion 173 for blocking the nut 130, so as to further ensure that the nut 130 does not move left and right; as shown in fig. 7 and 8, the second limit step 133 and the third limit adjustment gap on the nut 130 form a detent groove 135, and the detent portion 173 is engaged with the detent groove 135, thereby achieving the effect of preventing the nut 130 from shifting left and right.

In one embodiment, referring to fig. 9, the second mounting base 170 further has an extending portion 174, the extending portion 174 extends toward one side of the nut 130, and the locking portion 173 is disposed at an end of the extending portion 174 facing the nut 130 and extends toward the hole of the second mounting through hole 171.

In one embodiment, referring to fig. 9, at least two detent portions 173 are provided, and the detent portions 173 are spaced around the outer circumference of the nut 130.

Another embodiment provides an antenna comprising a downtilt display apparatus as in any of the above embodiments.

This antenna can be the electricity accent antenna, adopt aforementioned downtilt angle display device, when the electricity accent has a down dip, the dielectric plate 200 that moves the looks ware removes and drives screw rod 120 and removes, because screw rod 120 and nut 130 spiro union cooperation, thereby drive nut 130 through the flexible of screw rod 120 and rotate, drive indicator 140 when nut 130 rotates and rotate, and indicator 140's instruction portion 141 can instruct the scale on calibrated scale 110, thereby realize the regulation range show that has a down dip to the electricity accent, so that the staff directly perceived regulation range, and simple structure, the cost is also low.

In one embodiment, referring to fig. 1 to 4, at least two dielectric plates 200 are provided, and at least two of the dial 110, the indicator 140, the screw 120 and the nut 130 are provided and correspond to the dielectric plates 200 one to one.

As shown in fig. 1 to 4, there are six dielectric plates 200, and six dials 110, indicators 140, screws 120, and nuts 130 are provided to display the adjustment of the down tilt angle of the phase shifter corresponding to different dielectric plates 200.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A downward inclination display device, comprising:

the dial is fixedly arranged;

2. The downward inclination display device according to claim 1, further comprising an adapter, wherein the adapter is connected with the nut and can rotate along with the nut, and the adapter is in transmission fit with the indicator so that the adapter drives the indicator to rotate.

3. The downtilt display device according to claim 2, wherein the adapter has an adapter tooth, and the indicator has an abutment tooth, the abutment tooth being in meshing engagement with the adapter tooth.

4. The downward inclination angle display device according to claim 3, wherein the total stroke of the screw is L, the lead of the nut is a, and L is a × N, and the reduction ratio between the indicator and the adaptor is N, so that the start position of the screw corresponds to the start scale indicated by the indicator on the dial, and the end position of the screw corresponds to the end scale indicated by the indicator on the dial; wherein N is an integer equal to or greater than 1.

5. The downward inclination angle display device according to claim 2, wherein the screw has a connection part and a driving part, the connection part and the driving part are respectively located at two opposite ends of the screw, the connection part is used for being connected with the dielectric plate or the connection part is used for being connected with an intermediate member which drives the dielectric plate to move, and the driving part is used for being screwed with the nut so as to drive the nut to rotate;

6. The downtilt angle display device according to claim 3, further comprising a first mounting seat and a second mounting seat, wherein the first mounting seat and the second mounting seat are arranged at intervals;

7. The downtilt display device according to claim 6, wherein the dial has a disk body and a mounting post, the mounting post is fixed with the first mounting seat, the mounting post is provided with a first mounting through hole, the first mounting through hole is provided through the first mounting seat and the disk body, and the indicator is rotatably fitted with the dial through the first mounting through hole; the indicating part is a needle-shaped flange arranged on the end face of the indicating piece far away from the nut.

8. The downward inclination display device according to claim 6, further comprising a limit bearing, wherein the limit bearing is arranged on the first mounting seat, and the adaptor is in running fit with the limit bearing;

9. The downtilt display device according to claim 8, wherein the transmission portion and the adapting tooth portion are respectively located at opposite ends of the adaptor, and the limit bearing or the first mounting seat is provided with a receiving groove for receiving at least a portion of the adapting tooth portion and engaging the adapting tooth portion with the mating tooth portion.

10. The downward inclination angle display device according to claim 6, wherein the second mounting seat is provided with a second mounting through hole, the hole wall of the second mounting through hole is provided with a first limiting step, and the first limiting step is arranged along the circumference of the second mounting through hole; the nut is provided with a second limiting step which is arranged around the periphery of the nut and is in limiting fit with the first limiting step;

11. An antenna comprising the downtilt display apparatus according to any one of claims 1 to 10.

12. The antenna of claim 11, wherein the dielectric plate is provided with at least two, and the dial, the indicator, the screw and the nut are provided with at least two and correspond to the dielectric plate one to one.