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WO2018176959A1 - 一种止脱滑动轴承及天线 - Google Patents

一种止脱滑动轴承及天线 Download PDF

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Publication number
WO2018176959A1
WO2018176959A1 PCT/CN2017/120177 CN2017120177W WO2018176959A1 WO 2018176959 A1 WO2018176959 A1 WO 2018176959A1 CN 2017120177 W CN2017120177 W CN 2017120177W WO 2018176959 A1 WO2018176959 A1 WO 2018176959A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
rotating shaft
hole
limiting
sliding bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/120177
Other languages
English (en)
French (fr)
Inventor
游建军
刘永军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comba Telecom Technology Guangzhou Ltd
Comba Telecom Systems Guangzhou Co Ltd
Tianjin Comba Telecom Systems Co Ltd
Comba Network Systems Co Ltd
Original Assignee
Comba Telecom Technology Guangzhou Ltd
Comba Telecom Systems China Ltd
Comba Telecom Systems Guangzhou Co Ltd
Tianjin Comba Telecom Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comba Telecom Technology Guangzhou Ltd, Comba Telecom Systems China Ltd, Comba Telecom Systems Guangzhou Co Ltd, Tianjin Comba Telecom Systems Co Ltd filed Critical Comba Telecom Technology Guangzhou Ltd
Publication of WO2018176959A1 publication Critical patent/WO2018176959A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas

Definitions

  • the present invention relates to the field of mobile antennas, and in particular to a detachable sliding bearing and an antenna using the same.
  • the two-dimensional adjustable antenna adds a remote horizontally adjustable function module based on the traditional antenna, and can remotely control the antenna to automatically adjust the radiation direction to achieve more precise management.
  • a horizontally adjustable functional module uses a sliding bearing that acts as a rotary support.
  • the bearing functions to support rotation.
  • the rotating shaft of the bearing is fixed on the bottom plate through the fixing seat, the bottom plate and the fixing seat are easily deformed, so that the rotating shaft is detached from the sleeve, or the shaft and the sleeve are separated from each other due to the axial matching gap caused by the machining error of the part, resulting in the antenna.
  • the normal use of the device is affected and may even cause the antenna to be damaged.
  • a first object of the present invention is to provide a retaining slide bearing that prevents a shaft from coming off the sleeve.
  • a second object of the present invention is to provide an antenna using the above bearing to ensure its normal use and prolong its service life.
  • the present invention provides the following technical solutions:
  • a slidable bearing includes a sleeve and a rotating shaft assembled with the sleeve, the sleeve includes a limiting end and a mounting end and the middle portion has a mounting hole penetrating through the two ends;
  • the rotating shaft comprises a placing a fitting portion in the mounting hole and a protrusion extending from the mounting hole and used for connecting the member to be supported, the engaging portion of the sleeve and the rotating shaft is designed such that the sleeve limits the rotating shaft from Falling off in the sleeve.
  • the mounting end of the sleeve corresponds to the mating portion of the rotating shaft, and the limiting end of the sleeve corresponds to the protruding portion of the rotating shaft;
  • the engaging portion of the rotating shaft is provided with a limiting flange on the outer circumference thereof.
  • the limiting end of the sleeve is provided with a limiting boss for unidirectionally blocking the limiting flange in the mounting hole.
  • the limiting flange is formed by the fitting portion extending in a radial direction.
  • the limiting boss is inclined along the mounting end toward the limiting end toward the axis, and the limiting flange is designed to be coupled with the limiting boss when sliding to the limiting boss Engage each other.
  • the projecting portion of the rotating shaft is provided with at least one first connecting post which extends from the protruding end toward the mating portion and for the threaded connecting member to pass through the member to be supported.
  • the fitting portion is recessed by an end surface, and the first connecting post has a through hole communicating with the groove for the threaded connecting member to pass through the through hole from the groove.
  • the sleeve is provided with a cover on the limiting end, and a retaining hole for the protruding portion of the rotating shaft and a mounting hole for mounting the sleeve to the external supporting body are opened thereon Connection hole.
  • the sleeve includes an inner ring and an outer ring which are coaxially disposed and connected to the cover, and a plurality of second connecting posts are disposed between the inner and outer rings, and each of the second connecting columns is open a through hole that communicates with the connection hole.
  • reinforcing ribs are connected between the inner ring and the outer ring.
  • an end of the sleeve opposite to the cover is provided with a pair of positioning pins distributed along the diameter of the sleeve.
  • the sleeve and the rotating shaft are made of high-strength plastic or fiber-reinforced plastic.
  • An antenna includes an antenna cover, an upper end mounting plate and a lower end mounting plate fixed to upper and lower ends of the antenna cover, a bearing fixed to the upper end mounting plate, a driving module fixed to the lower end mounting plate, and a connection between the bearing and the driving module.
  • An antenna reflector wherein the bearing is the above-described snap-off sliding bearing, wherein the sleeve is connected to the upper end mounting plate, and the rotating shaft is coupled to the antenna reflector.
  • the upper end mounting plate is provided with a positioning hole corresponding to the positioning pin and a through hole corresponding to the connection hole provided on the surface cover.
  • the sleeve and the rotating shaft are combined with each other, wherein the engaging portion of the rotating shaft is provided with a limiting flange on the outer circumference thereof, and the limiting end of the sleeve is limited in the mounting hole.
  • Positioning boss during the working of the bearing, due to the existence of the limiting boss, the limiting flange can only move a small extent between the limiting boss and the external supporting body, thereby limiting the rotation of the shaft from the sleeve Shedding, to ensure the stability of the use of the bearing, thus ensuring the normal use of the antenna and extending the life of the antenna.
  • Figure 1 is a perspective view of a sliding bearing in accordance with one embodiment of the present invention.
  • Figure 2 is a cross-sectional view showing the state of use of the detachment sliding bearing shown in Figure 1;
  • Figure 3 is a perspective structural view of the rotating shaft of the sliding bearing shown in Figure 1;
  • Figure 4 is a perspective structural view showing another angle of the anti-skid shaft shown in Figure 3;
  • Figure 5 is a perspective structural view of the sleeve of the retaining slide bearing shown in Figure 1;
  • Figure 6 is a perspective structural view of the anti-skid sleeve shown in Figure 5 at another angle;
  • Figure 7 is a perspective structural view of an antenna according to an embodiment of the present invention.
  • Figure 8 is a perspective structural view of the upper end mounting plate of the antenna shown in Figure 7.
  • the retaining slide bearing 4 includes a sleeve 41 and a rotating shaft 42 which are assembled with each other, wherein the rotating shaft 42 is rotatable relative to the sleeve 41, and the sleeve 41 defines that the rotating shaft 42 can only move in a small range in the axial direction. Can't fall out of it.
  • the sleeve 41 includes a mounting end 412 and a limiting end 413 along its axial direction, and a mounting hole 411 penetrating through the two ends is formed in the middle portion thereof.
  • the mounting end 412 is used to mount the bearing to an external support, such as the upper end mounting plate 2 (see Figure 7) below.
  • the rotating shaft 42 includes a fitting portion 421 and a protruding portion 422 along its axial direction.
  • the fitting portion 421 is placed in the mounting hole 411 of the sleeve 41, and is restrained by the sleeve 41 from the axial direction of the extending portion 422 along the engaging portion 421.
  • the protruding portion 422 passes through the mounting hole 411 and is exposed to the limiting end 413 to be connected to an external component to be supported, such as the antenna reflector 6 (see FIG. 7) below, to reflect the antenna.
  • the plate 6 constitutes a support and supports its axial rotation about the axis of rotation 42.
  • the diameter of the mounting hole 411 on the side of the limiting end 413 is slightly larger than the diameter of the rotating shaft 42 on the side of the protruding portion 422, and the rotating shaft 42 is placed in the mounting hole 411 after the installation is completed.
  • the projecting portion 422 of the rotating shaft is almost in contact with the inner surface 411 of the mounting hole, and therefore, the degree of freedom of the rotating shaft 42 in the radial direction is almost completely limited.
  • the sleeve 41 is designed to constrain the axial movement distance of the rotating shaft 42 along the engaging portion 421 toward the protruding portion 422.
  • the rotating shaft 42 can be moved only in a small range in the axial direction and in the axial direction, and is limited in the remaining plurality of degrees of freedom. Therefore, the purpose of preventing the rotating shaft 42 from being detached from the sleeve 41 can be achieved. Effectively ensure the stability of the use of the bearing 4 and extend its service life.
  • the engaging portion 421 of the rotating shaft 42 is provided with a limiting flange 423 on the outer circumference thereof.
  • the limiting end 413 of the sleeve 41 is disposed in the mounting hole 411 for unidirectionally blocking the limiting protrusion.
  • the mounting end 412 of the sleeve is used to connect the external support. Therefore, after the bearing 4 is installed, the limiting flange 423 will be located between the limiting boss 4111 and the external support. Therefore, the rotary shaft 42 can only move in a small range in the axial direction. In the process of stopping the sliding bearing 4, although the assembly error or the like occurs when the components in the antenna are assembled, the meshing size of the rotating shaft 42 and the sleeve 41 may be reduced, and at this time, the rotating shaft 42 is subjected to support.
  • the limiting flange 423 is formed to extend in the radial direction by the fitting portion 421.
  • the limiting flange 423 is integrally formed with the rotating shaft 42 to increase the toughness of the limiting flange 423 and to facilitate production.
  • the limiting boss 4111 is disposed obliquely toward the axis along the mounting end 412 toward the limiting end 413, and the limiting flange 423 is configured to slide to the limiting boss 4111 when it is slid It can be engaged with the limit boss 4111.
  • the inclined arrangement of the limiting boss 4111 in the invention will facilitate the decomposition of the force acting thereon, thereby reducing the wear between the limiting flange 423 and the limiting boss 4111, and increasing the rotation of the rotating shaft 42 and the sleeve 41. Durability.
  • the inclination angle of the limiting boss 4111 is not limited as long as the limiting flange 423 can be blocked by one direction.
  • the protruding portion 422 of the rotating shaft 42 is provided with at least one first connecting post 4221 extending from the end of the protruding portion 422 toward the engaging portion 421 and being threadable.
  • the connecting member is connected to the member to be supported.
  • the first connecting post 4221 defines a function of the threaded connecting member to prevent the threaded connecting member from swaying when the bearing 4 is in operation, and to strengthen the stability of the sliding bearing 4 and the component connected thereto.
  • the hole for the threaded connecting member on the first connecting post 4221 is a counterbore to save the axial space in the mounting hole.
  • At least one threaded hole may be formed in the end surface of the engaging portion 421 and the extending portion 422 of the through shaft 42 and connected to the member to be supported through the threaded hole by means of a nut string.
  • a connection sleeve is provided at a joint of the to-be-supported member and the rotating shaft 42, and the rotating shaft 42 can be inserted into the connecting sleeve to achieve a tight fitting connection with the member to be supported.
  • the present invention does not limit the manner in which the shaft 42 is coupled to the component to be supported.
  • the engaging portion 421 is concavely formed with a recess 4211.
  • the first connecting post 4221 has a through hole communicating with the recess 4211 for the threaded connecting member to pass through the recess 4211. Through the through hole.
  • the fitting portion 421 is recessed by the end surface to help reduce the weight of the rotating shaft 42 and to facilitate the weight reduction of the bearing 4.
  • the inner edge of the groove 4211 is provided with a reinforcing rib 4123 for reinforcing the strength of the rotating shaft 42, and further consolidating the overall structure of the sliding bearing 4.
  • the sleeve 41 is provided with a cover 4131 at the limiting end 413, and a retaining hole 4132 for the protruding portion 422 of the rotating shaft 42 is opened and used for
  • the sleeve 41 is mounted to a connecting hole 4133 on the outer support.
  • the connecting hole 4133 is a threaded hole, and the sleeve 41 can be connected to the external support body through the threaded hole by means of a screw.
  • the connecting hole 4133 is a through hole, the through hole is filled with a dielectric material, and the sleeve 41 can be connected to the external support through the dielectric material through a tapping screw.
  • the sleeve 41 includes an inner ring (not labeled, the same below) and an outer ring (not labeled, the same below) which are coaxially disposed and connected to the cover 4131, and are distributed between the inner and outer rings.
  • a plurality of second connecting posts 4122, each of the second connecting posts 4122 are provided with a through hole communicating with the connecting hole 4133, as shown in FIG.
  • reinforcing ribs 4123 each connected to the inner ring and the outer ring are disposed.
  • the reinforcing ribs 4123 are used to enhance the strength of the sleeve 41, and further consolidate the overall structure of the slidable bearing 4.
  • one end of the sleeve 41 opposite to the cover 4131 is provided with a pair of positioning pins 4124 distributed along the diameter of the sleeve 41.
  • the positioning pin 4124 is disposed on the outer ring of the sleeve 41 .
  • the external support body is provided with a through hole corresponding to the connecting hole 4133 and a positioning hole corresponding to the positioning pin 4124.
  • the positioning pin 4124 is inserted into the positioning hole for pre-fixing the connecting hole 4133 and
  • the relative positions of the through holes corresponding to the outer support body are such that it is not necessary to adjust the positions of the through holes 4103 in alignment with the through holes on the outer support body in the process of fixing the sleeve 41 and the outer support body by means of the connecting member.
  • the positioning pin 4124 may also be disposed on the reinforcing rib 4223 or the inner ring.
  • the sleeve 41 and the rotating shaft 42 are made of high-strength plastic or fiber-reinforced plastic.
  • the high-strength plastic and the fiber-reinforced plastic have certain flexibility, and can also strengthen the structure of the sliding bearing 4, so that the sleeve and the rotating shaft can be hollowed out to some extent, and the structural strength is not reduced when the weight is reduced. The stability and reliability of the retaining slide bearing 4 are improved.
  • the present invention further provides an antenna 1000 including an antenna cover 1 , an upper end mounting plate 2 and a lower end mounting plate 3 fixed to both ends of the antenna cover, a bearing 4 fixed to the upper end mounting plate 2 , and a fixing at the lower end.
  • a driving module 5 of the board 3 and an antenna reflector 6 connected between the bearing 4 and the driving module 5, wherein the bearing 4 is the above-mentioned detachable sliding bearing 4, wherein the sleeve 41 and the upper mounting plate 2 Connected, the rotating shaft 42 is connected to the antenna reflector 6.
  • the upper end mounting plate 2 defines a positioning hole 21 corresponding to the positioning pin 4124 and a through hole corresponding to the connecting hole 4133 provided on the surface cover 4131 .
  • the positioning pin 4124 is inserted into the positioning hole 21 for preliminarily fixing the relative position of the connecting hole 4133 and the through hole corresponding to the external support.
  • the working process of the antenna of the present invention is: the remote control driving module drives the antenna reflector to rotate to adjust the radiation direction of the antenna. Since the rotating shaft is fixedly connected with the antenna reflector, the rotating shaft can be further rotated about the axial direction. In the antenna of the present invention, since the above-mentioned bearing is used, the movement of the rotating shaft is restricted in the axial direction, and therefore, the rotating shaft does not escape from the sleeve, thereby improving the stability of the entire antenna and prolonging the service life of the antenna.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of Aerials (AREA)

Abstract

一种止脱滑动轴承（4），包括轴套（41）及与轴套相互组配的转轴（42），轴套（41）包括限位端（413）和安装端（412）且其中部开设有贯通两端的安装孔（411）；转轴（42）包括置于安装孔（411）内的配合部（421）和从安装孔（411）中穿出并用于连接待支撑部件（6）的伸出部（422），轴套（41）和转轴（42）的配合部（421）被设计成轴套（41）限制了转轴（42）从轴套中脱落，从而保证轴承的稳定性及延长轴承的使用寿命。还涉及一种采用该止脱滑动轴承的天线。

Description

一种止脱滑动轴承及天线 技术领域
本发明涉及移动天线领域，具体而言，本发明涉及一种止脱滑动轴承及采用该止脱滑动轴承的天线。
背景技术
二维可调天线在传统天线的基础上增加了远程水平可调的功能模块，可远程控制天线自动调节辐射方向，实现更精准的管理。
水平可调的功能模块中运用到了一种起旋转支撑作用的滑动轴承。一般情况，轴承起支撑旋转的功能。但由于轴承的转轴通过固定座固定在底板上，而底板及固定座容易变形导致转轴从轴套中脱落，或者因为零件加工误差造成的轴向配合间隙而使转轴与轴套相互分离，导致天线的正常使用受影响，甚至可能导致天线被损坏。
针对其特殊应用环境，有必要对轴承进行改进，以防止在天线使用过程中，由于转轴从轴套内脱落而影响天线的正常使用。
发明内容
本发明的第一目的旨在提供一种防止转轴从轴套脱落的止脱滑动轴承。
本发明的第二目的旨在提供一种采用上述轴承的天线，以保证其正常使用和延长使用寿命。
为了实现上述目的，本发明提供以下技术方案：
一种止脱滑动轴承，包括轴套及与所述轴套相互组配的转轴，所述轴套包括限位端和安装端且其中部开设有贯通两端的安装孔；所述转轴包括置于所述安装孔内的配合部和从所述安装孔中穿出并用于连接待支撑部件的伸出部，所述轴套和转轴的配合部被设计成所述轴套限制了所述转轴 从轴套中脱落。
优选地，所述轴套的安装端与转轴的配合部相对应，所述轴套的限位端与转轴的伸出部相对应；所述转轴的配合部于其外周设有限位凸缘，所述轴套的限位端于所述安装孔内设有用于单向挡止所述限位凸缘的限位凸台。
优选地，所述限位凸缘由所述配合部沿径向延伸形成。
优选地，所述限位凸台沿所述安装端向限位端的方向朝向轴心倾斜设置，所述限位凸缘被设计成当其滑至限位凸台处时可与限位凸台相互咬合。
优选地，所述转轴的伸出部设有至少一个第一连接柱，其由所述伸出部端面向配合部延伸，并供螺纹连接件穿越与待支撑部件连接。
优选地，所述配合部由端面内凹形成凹槽，所述第一连接柱具有与凹槽连通的通孔，以供螺纹连接件从所述凹槽穿过通孔。
优选地，所述轴套于所述限位端设有面盖，并且其上开设有供所述转轴的伸出部穿出的让位孔及用于将该轴套安装到外部支撑体上的连接孔。
优选地，所述轴套包括同轴设置并均与所述面盖连接的内圈和外圈，内外圈之间分布有多个第二连接柱，每个所述第二连接柱均开设有连通所述连接孔的通孔。
优选地，相邻两个第二连接柱之间设有均与内圈和外圈连接的加强筋。
优选地，所述轴套上与所述面盖相对的一端设有一对沿轴套直径分布的定位销。
优选地，所述轴套与所述转轴采用高强度塑料或纤维增强型塑料制成。
一种天线，包括天线外罩、固定于天线外罩内上下两端的上端安装板和下端安装板、固定于上端安装板的轴承、固定于下端安装板的驱动模块以及连接在轴承及驱动模块之间的天线反射板，所述轴承为上述的止脱滑动轴承，其中，所述轴套与所述上端安装板连接，所述转轴与所述天线反射板连接。
优选地，所述上端安装板开设有与所述定位销对应的定位孔及与所述面盖上所设连接孔对应的通孔。
相比现有技术，本发明的方案中，轴套与转轴相互组配使用，其中，转轴的配合部于其外周设有限位凸缘，轴套的限位端于所述安装孔内设有限位凸台，轴承工作过程中，由于限位凸台的存在，使得所述限位凸缘只能在限位凸台与外部支撑体之间小范围的移动，从而限制了转轴从轴套中脱落，保证轴承的使用稳定性，从而保证了天线的正常使用和延长天线的使用寿命。
本发明附加的方面和优点将在下面的描述中部分给出，这些将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1为本发明一个实施例中止脱滑动轴承的立体图；
图2为图1所示止脱滑动轴承的使用状态剖视图；
图3为图1所示止脱滑动轴承中转轴的立体结构图；
图4为图3所示止脱防滑转轴另一角度的立体结构图；
图5为图1所示止脱滑动轴承中轴套的立体结构图；
图6为图5所示止脱防滑轴套另一角度的立体结构图；
图7为本发明一个实施例中天线的立体结构图；
图8为图7所示天线中上端安装板的立体结构图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能解释为对本发明的限制。
图1和图2共同示出了本发明的止脱滑动轴承4，可安装于可调天线 中，用于支持天线主体的旋转功能，以便于实现天线水平方位角的远程电调功能。
所述止脱滑动轴承4包括相互组配的轴套41和转轴42，其中所述转轴42可相对轴套41转动，并且所述轴套41限定了转轴42只能沿轴向小范围移动而无法从其内脱落。
所述轴套41沿其轴向包括安装端412与限位端413，并且在其中部开设有贯通两端的安装孔411。其中，所述安装端412用于将该轴承安装到外部支撑体，比如下文的上端安装板2(参见图7)上。
所述转轴42沿其轴向包括配合部421和伸出部422。其中，所述配合部421置于轴套41的所述安装孔411内，并且被所述轴套41约束其沿配合部421向伸出部422轴向移动的距离。所述伸出部422从安装孔411中穿出并外露于所述限位端413，以连接到外部的待支撑部件，比如下文的天线反射板6(参见图7)上，以对天线反射板6构成支撑，并支持其绕转轴42的轴向旋转。
在本发明的止脱滑动轴承中，首先，所述安装孔411于限位端413一侧的孔径略大于转轴42于伸出部422一侧的直径，安装完成后转轴42置于安装孔411内，所述转轴的伸出部422几乎与安装孔内表面411相贴合，因此，转轴42在径向上的自由度几乎被完全限制。其次，所述轴套41被设计成约束所述转轴42沿配合部421向伸出部422的轴向运动距离。因此，在本方案中，转轴42仅能在轴向上小范围移动以及绕轴向转动，在其余多个自由度上均被限制，因此，能够实现防止转轴42从轴套41脱离的目的，有效地保证轴承4的使用稳定性并延长其使用寿命。
优选地，所述转轴42的配合部421于其外周设有限位凸缘423，所述轴套41的限位端413于所述安装孔411内设有用于单向挡止所述限位凸缘423的限位凸台4111。
如前所述，所述轴套的安装端412用于连接外部支撑体，因此，在轴承4安装完成后，所述限位凸缘423将位于限位凸台4111与外部支撑体之间，因此，转轴42在轴向上只能小范围的移动。在止脱滑动轴承4工作的过程中，尽管由于天线中各零部件装配时存在装配误差等问题，转轴 42与轴套41的啮合尺寸可能会减小，此时，转轴42会受到沿待支撑部件方向的作用力，但是，在本发明中，由于限位凸台4111的存在，单向挡止了限位凸缘423沿配合部421向伸出部422的轴向运动，因而，可防止转轴42从轴套41脱离，保证止脱滑动轴承4的稳定性并延长其使用寿命。
具体地，所述限位凸缘423由所述配合部421沿径向延伸形成。所述限位凸缘423与转轴42一体成型，增加了限位凸缘423的强韧度，也方便了生产。
优选地，所述限位凸台4111沿所述安装端412向限位端413的方向朝向轴心倾斜设置，所述限位凸缘423被配置成当其滑至限位凸台4111处时可与限位凸台4111相互咬合。
如上所述，天线整体的零部件装配时存在装配误差等问题，在所述止脱滑动轴承4工作过程中，当转轴42与轴套41的啮合尺寸减小时，转轴42会受到沿待支撑部件方向的作用力，但是由于限位凸台4111的阻挡，所述作用力将平均的分布于限位凸缘423上，当然地，所述限位凸台4111也会受到相应的反作用力，本发明中所述限位凸台4111倾斜设置将有利于分解作用于其上的作用力，从而减小限位凸缘423与限位凸台4111之间的磨损，增加转轴42与轴套41的耐用程度。当然，本发明的实施例中，不对限位凸台4111的倾斜角度做限制，只要能实现单向挡止所述限位凸缘423即可。
参考图3，在本发明的实施例中，所述转轴42的伸出部422设有至少一个第一连接柱4221，其由所述伸出部422端面向配合部421延伸，并可供螺纹连接件穿越与待支撑部件连接。所述第一连接柱4221对所述螺纹连接件起到限定作用，防止螺纹连接件在轴承4工作时产生晃动，加强止脱滑动轴承4和与之连接零部件的稳固程度。另外，所述第一连接柱4221上用于供螺纹连接件穿越的孔位为沉孔，以节省对安装孔内轴向空间的占用。
本发明的另一实施例中，可贯通转轴42的配合部421和伸出部422的端面上开设至少一个螺纹孔，并借助螺母柱穿过所述螺纹孔与待支撑部 件连接。本发明的又一实施例中，所述待支撑部件与所述转轴42连接处设有连接套，所述转轴42可插入所述连接套实现与待支撑部件的紧配合连接。显然地，本发明并不对转轴42与待支撑部件的连接方式进行限制。
优选地，参考图4，所述配合部421由端面内凹形成凹槽4211，所述第一连接柱4221具有与凹槽4211连通的通孔，以供螺纹连接件从所述凹槽4211穿过通孔。容易理解的，所述配合部421由端面内凹形成凹槽有助于减轻转轴42的重量，有利于轴承4的轻量化。另外，所述凹槽4211的内部边缘设有加强筋4123，用于增强转轴42的强韧度，进一步巩固止脱滑动轴承4的整体结构。
优选地，参考图5所述轴套41于所述限位端413设有面盖4131，并且其上开设有供所述转轴42的伸出部422穿出的让位孔4132及用于将该轴套41安装到外部支撑体上的连接孔4133。本发明的一个实施例中，所述连接孔4133为螺纹孔，所述轴套41可借助螺丝穿过所述螺纹孔实现与外部支撑体的连接。本发明的又一实施例中，所述连接孔4133为通孔，所述通孔内填充有介质材料，轴套41可通过自攻螺钉穿过所述介质材料实现与外部支撑体的连接。
优选地，所述轴套41包括同轴设置并均与所述面盖4131连接的内圈(未标号，下同)和外圈(未标号，下同)，内、外圈之间分布有多个第二连接柱4122，每个所述第二连接柱4122均开设有连通所述连接孔4133的通孔，如图6所示。
优选地，相邻两个第二连接柱4122之间设有均与内圈和外圈连接的加强筋4123。所述加强筋4123用于增强轴套41的强韧度，进一步巩固止脱滑动轴承4的整体结构。
优选地，所述轴套41上与所述面盖4131相对的一端设有一对沿轴套41直径分布的定位销4124。
请继续参考图3，所述定位销4124设于轴套41的外圈上。参考图8，外部支撑体上设有与连接孔4133对应的通孔及与所述定位销4124对应的定位孔，所述定位销4124插入所述定位孔内用于预先固定连接孔4133和与外部支撑体上与之相对应的通孔的相对位置，使得在借助连接件固定轴 套41与外部支撑体的过程中无需逐一调整连接孔4133与外部支撑体上通孔的位置相对齐。本发明的又一实施例中，所述定位销4124还可设于所述加强筋4223或内圈上。
优选地，所述轴套41与所述转轴42采用高强度塑料或纤维增强型塑料制成。所述高强度塑料和纤维增强型塑料均具有一定的柔性，也可增强止脱滑动轴承4结构的强度，使得轴套和转轴可以一定程度上镂空设置，在减轻其重量时不降低结构强度，提升止脱滑动轴承4的稳定性和可靠性。
如图7所示，本发明还提供一种天线1000，包括天线外罩1、固定于天线外罩两端的上端安装板2和下端安装板3、固定于上端安装板2的轴承4、固定于下端安装板3的驱动模块5以及连接在轴承4及驱动模块5之间的天线反射板6，所述轴承4为上述的止脱滑动轴承4，其中，所述轴套41与所述上端安装板2连接，所述转轴42与所述天线反射板6连接。
具体地，如图8所示，所述上端安装板2开设有与所述定位销4124对应的定位孔21及与所述面盖4131上所设连接孔4133对应的通孔。如上所述，所述定位销4124插入所述定位孔21内，用于预先固定连接孔4133和与外部支撑体上与之相对应的通孔的相对位置。
本发明的天线的工作过程为：远程控制驱动模块带动天线反射板旋转以调节天线辐射方向，由于转轴与天线反射板固定连接，因此，可进一步带动转轴绕轴向旋转。本发明的天线中，由于采用了上述的轴承，在轴向上限制了转轴的运动，因此，转轴不会脱离轴套，提升了天线整体的稳定性，延长了天线的使用寿命。
以上所述仅是本发明的部分实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (13)

  1. 一种止脱滑动轴承，其特征在于，包括轴套及与所述轴套相互组配的转轴，所述轴套包括限位端和安装端且其中部开设有贯通两端的安装孔；所述转轴包括置于所述安装孔内的配合部和从所述安装孔中穿出并用于连接待支撑部件的伸出部，所述轴套和转轴的配合部被设计成所述轴套限制了所述转轴从轴套中脱落。
  2. 根据权利要求1所述的止脱滑动轴承，其特征在于，所述轴套的安装端与转轴的配合部相对应，所述轴套的限位端与转轴的伸出部相对应；所述转轴的配合部于其外周设有限位凸缘，所述轴套的限位端于所述安装孔内设有用于单向挡止所述限位凸缘的限位凸台。
  3. 根据权利要求2所述的止脱滑动轴承，其特征在于，所述限位凸缘由所述配合部沿径向延伸形成。
  4. 根据权利要求3所述的止脱滑动轴承，其特征在于，所述限位凸台沿所述安装端向限位端的方向朝向轴心倾斜设置，所述限位凸缘被设计成当其滑至限位凸台处时可与限位凸台相互咬合。
  5. 根据权利要求1所述的止脱滑动轴承，其特征在于，所述转轴的伸出部设有至少一个第一连接柱，其由所述伸出部端面向配合部延伸，并供螺纹连接件穿越与待支撑部件连接。
  6. 根据权利要求5所述的止脱滑动轴承，其特征在于，所述配合部由端面内凹形成凹槽，所述第一连接柱具有与凹槽连通的通孔，以供螺纹连接件从所述凹槽穿过通孔。
  7. 根据权利要求1所述的止脱滑动轴承，其特征在于，所述轴套于所述限位端设有面盖，并且其上开设有供所述转轴的伸出部穿出的让位孔及用于将该轴套安装到外部支撑体上的连接孔。
  8. 根据权利要求7所述的止脱滑动轴承，其特征在于，所述轴套包括同轴设置并均与所述面盖连接的内圈和外圈，内外圈之间分布有多个第二连接柱，每个所述第二连接柱均开设有连通所述连接孔的通孔。
  9. 根据权利要求8所述的止脱滑动轴承，其特征在于，相邻两个第二 连接柱之间设有均与内圈和外圈连接的加强筋。
  10. 根据权利要求8所述的止脱滑动轴承，其特征在于，所述轴套上与所述面盖相对的一端设有一对沿轴套直径分布的定位销。
  11. 根据权利要求1至10任意一项所述的止脱滑动轴承，其特征在于，所述轴套与所述转轴采用高强度塑料或纤维增强型塑料制成。
  12. 一种天线，包括天线外罩、固定于天线外罩内上下两端的上端安装板和下端安装板、固定于上端安装板的轴承、固定于下端安装板的驱动模块以及连接在轴承及驱动模块之间的天线反射板，其特征在于，所述轴承为权利要求1～11任意一项所述的止脱滑动轴承，其中，所述轴套与所述上端安装板连接，所述转轴与所述天线反射板连接。
  13. 根据权利要求12所述的天线，其特征在于，所述上端安装板开设有与所述定位销对应的定位孔及与所述面盖上所设连接孔对应的通孔。
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