CN106763148B

CN106763148B - Antenna

Info

Publication number: CN106763148B
Application number: CN201710190750.3A
Authority: CN
Inventors: 游建军; 刘永军
Original assignee: Comba Telecom Technology Guangzhou Ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd
Priority date: 2017-03-28
Filing date: 2017-03-28
Publication date: 2023-03-14
Anticipated expiration: 2037-03-28
Also published as: WO2018176959A1; CN106763148A

Abstract

The invention provides a slip-proof sliding bearing, which comprises a shaft sleeve and a rotating shaft matched with the shaft sleeve, wherein the shaft sleeve comprises a limiting end and a mounting end, and the middle part of the shaft sleeve is provided with a mounting hole penetrating through the two ends; the rotating shaft comprises a matching part arranged in the mounting hole and an extending part which penetrates out of the mounting hole and is used for connecting a part to be supported, and the shaft sleeve and the matching part of the rotating shaft are designed into limit the rotating shaft to fall off from the shaft sleeve, so that the stability of the bearing is ensured and the service life of the bearing is prolonged. In addition, the invention also provides an antenna adopting the anti-falling sliding bearing.

Description

Antenna

Technical Field

The invention relates to the field of mobile antennas, in particular to a slip-off prevention sliding bearing and an antenna adopting the same.

Background

The two-dimensional adjustable antenna is additionally provided with the remote horizontal adjustable functional module on the basis of the traditional antenna, the radiation direction of the antenna can be automatically adjusted through remote control, and more accurate management is realized.

A slide bearing with a rotary supporting function is applied to the functional module with adjustable level. Typically, the bearings function to support rotation. However, the rotating shaft of the bearing is fixed on the base plate through the fixing seat, and the base plate and the fixing seat are easy to deform, so that the rotating shaft falls off from the shaft sleeve, or the rotating shaft and the shaft sleeve are separated from each other due to an axial fit clearance caused by part machining errors, so that the normal use of the antenna is influenced, and even the antenna is possibly damaged.

In view of its special application environment, it is necessary to improve the bearing to prevent the normal use of the antenna from being affected by the falling of the rotating shaft from the shaft sleeve during the use of the antenna.

Disclosure of Invention

A first object of the present invention is to provide a slip-stop sliding bearing that prevents a rotating shaft from slipping off a sleeve.

A second object of the present invention is to provide an antenna using the bearing, so as to ensure its normal use and prolonged service life.

In order to achieve the purpose, the invention provides the following technical scheme:

a slip-proof sliding bearing comprises a shaft sleeve and a rotating shaft matched with the shaft sleeve, wherein the shaft sleeve comprises a limiting end and a mounting end, and the middle part of the shaft sleeve is provided with a mounting hole penetrating through the two ends; the rotating shaft comprises a matching part arranged in the mounting hole and a protruding part which penetrates out of the mounting hole and is used for connecting a component to be supported, and the shaft sleeve and the matching part of the rotating shaft are designed in such a way that the shaft sleeve limits the rotating shaft from falling off from the shaft sleeve.

Preferably, the mounting end of the shaft sleeve corresponds to the matching part of the rotating shaft, and the limiting end of the shaft sleeve corresponds to the extending part of the rotating shaft; the matching part of the rotating shaft is provided with a limiting flange at the periphery, and the limiting end of the shaft sleeve is provided with a limiting boss for blocking the limiting flange in a one-way manner in the mounting hole.

Preferably, the limit flange is formed by the fitting portion extending in the radial direction.

Preferably, the limiting boss is arranged obliquely towards the axis along the direction from the mounting end to the limiting end, and the limiting flange is designed to be engaged with the limiting boss when sliding to the limiting boss.

Preferably, the protruding part of the rotating shaft is provided with at least one first connecting column, the first connecting column extends from the end face of the protruding part to the matching part, and a threaded connector penetrates through the first connecting column and is connected with the part to be supported.

Preferably, the fitting portion is recessed from the end face to form a recess, and the first connecting post has a through hole communicating with the recess for the threaded connector to pass through the through hole from the recess.

Preferably, the shaft sleeve is provided with a face cover at the limiting end, and is provided with a yielding hole for the extending part of the rotating shaft to penetrate out and a connecting hole for mounting the shaft sleeve on an external support body.

Preferably, the shaft sleeve comprises an inner ring and an outer ring which are coaxially arranged and are connected with the face cover, a plurality of second connecting columns are distributed between the inner ring and the outer ring, and each second connecting column is provided with a through hole communicated with the connecting hole.

Preferably, a reinforcing rib which is connected with the inner ring and the outer ring is arranged between every two adjacent second connecting columns.

Preferably, one end of the shaft sleeve opposite to the face cover is provided with a pair of positioning pins distributed along the diameter of the shaft sleeve.

Preferably, the shaft sleeve and the rotating shaft are made of high-strength plastics or fiber reinforced plastics.

The utility model provides an antenna, includes the antenna dustcoat, be fixed in the antenna dustcoat upper end mounting panel and the lower extreme mounting panel at both ends about, be fixed in the bearing of upper end mounting panel, be fixed in the drive module of lower extreme mounting panel and connect the antenna reflecting plate between bearing and drive module, the bearing is foretell and ends the slide bearing, wherein, the axle sleeve with the upper end mounting panel is connected, the pivot with the antenna reflecting plate is connected.

Preferably, the upper mounting plate is provided with a positioning hole corresponding to the positioning pin and a through hole corresponding to the connecting hole formed in the face cover.

Compared with the prior art, in the scheme of the invention, the shaft sleeve and the rotating shaft are mutually assembled for use, wherein the matching part of the rotating shaft is provided with the limiting flange at the periphery thereof, the limiting end of the shaft sleeve is provided with the limiting boss in the mounting hole, and in the working process of the bearing, due to the existence of the limiting boss, the limiting flange can only move in a small range between the limiting boss and the external support body, so that the falling of the rotating shaft from the shaft sleeve is limited, the use stability of the bearing is ensured, the normal use of the antenna is ensured, and the service life of the antenna is prolonged.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of a slip-resistant sliding bearing in accordance with an embodiment of the present invention;

FIG. 2 is a sectional view of the anti-slip bearing shown in FIG. 1 in use;

FIG. 3 is a perspective view of the shaft of the slide bearing shown in FIG. 1;

FIG. 4 is a perspective view of the anti-slip shaft shown in FIG. 3 at another angle;

FIG. 5 is a perspective view of a sleeve in the slip-off preventive sliding bearing shown in FIG. 1;

FIG. 6 is a perspective view of the anti-slip cover shown in FIG. 5;

FIG. 7 is a perspective view of an antenna in accordance with one embodiment of the present invention;

fig. 8 is a perspective view of an upper end mounting plate of the antenna shown in fig. 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

Fig. 1 and 2 together show a slip-stop sliding bearing 4 of the present invention, which can be installed in an adjustable antenna for supporting the rotation function of the antenna body, so as to implement the remote electrical tuning function of the horizontal azimuth angle of the antenna.

The slip-off preventing sliding bearing 4 comprises a sleeve 41 and a rotating shaft 42 which are assembled with each other, wherein the rotating shaft 42 can rotate relative to the sleeve 41, and the sleeve 41 limits the rotating shaft 42 to move only along the axial direction to a small extent and not to slip off from the axial direction.

The shaft sleeve 41 includes a mounting end 412 and a limiting end 413 along the axial direction thereof, and a mounting hole 411 is formed at the middle thereof to penetrate through both ends. Wherein the mounting end 412 is used to mount the bearing to an external support, such as the upper mounting plate 2 (see fig. 7) below.

The shaft 42 includes a fitting portion 421 and a protruding portion 422 in its axial direction. Wherein, the fitting portion 421 is disposed in the mounting hole 411 of the bushing 41, and the distance of axial movement of the fitting portion 421 to the protruding portion 422 is restricted by the bushing 41. The protruding portion 422 protrudes from the mounting hole 411 and is exposed to the limiting end 413 to be connected to an external component to be supported, such as an antenna reflection plate 6 (see fig. 7) to support the antenna reflection plate 6 and support the antenna reflection plate to rotate around the axial direction of the rotating shaft 42.

In the anti-slip sliding bearing of the present invention, first, the aperture of the mounting hole 411 on the side of the limit end 413 is slightly larger than the diameter of the rotating shaft 42 on the side of the protruding portion 422, the rotating shaft 42 is placed in the mounting hole 411 after the installation is completed, the protruding portion 422 of the rotating shaft is almost attached to 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. Next, the boss 41 is designed to restrict the axial movement distance of the rotation shaft 42 along the fitting portion 421 toward the protruding portion 422. Therefore, in this embodiment, the rotating shaft 42 can move and rotate only in a small range in the axial direction, and is limited in the remaining multiple degrees of freedom, so that the purpose of preventing the rotating shaft 42 from being detached from the sleeve 41 can be achieved, the service stability of the bearing 4 can be effectively ensured, and the service life thereof can be prolonged.

Preferably, the matching portion 421 of the rotating shaft 42 is provided with a limit flange 423 at the outer periphery thereof, and a limit boss 4111 for unidirectionally stopping the limit flange 423 is arranged in the limit end 413 of the shaft sleeve 41 in the mounting hole 411.

As mentioned above, the mounting end 412 of the sleeve is used for connecting the external support, so that after the bearing 4 is mounted, the position-limiting flange 423 will be located between the position-limiting protrusion 4111 and the external support, so that the rotating shaft 42 can move only to a small extent in the axial direction. In the operation process of the anti-drop sliding bearing 4, although the engaging size of the rotating shaft 42 and the shaft sleeve 41 may be reduced due to the problems of assembly errors and the like when assembling parts in the antenna, at this time, the rotating shaft 42 may receive a force in the direction of the member to be supported, in the present invention, due to the existence of the limit boss 4111, the axial movement of the limit flange 423 along the matching portion 421 to the protruding portion 422 is unidirectionally blocked, so that the rotating shaft 42 is prevented from dropping off from the shaft sleeve 41, the stability of the anti-drop sliding bearing 4 is ensured, and the service life of the anti-drop sliding bearing is prolonged.

Specifically, the stopper flange 423 is formed by the fitting portion 421 extending in the radial direction. The limiting flange 423 and the rotating shaft 42 are integrally formed, so that the strength and the toughness of the limiting flange 423 are increased, and the production is facilitated.

Preferably, the limiting protrusion 4111 is disposed obliquely towards the axis along the direction from the mounting end 412 to the limiting end 413, and the limiting flange 423 is configured to engage with the limiting protrusion 4111 when it slides to the limiting protrusion 4111.

As described above, there are problems such as assembly errors when assembling the components of the whole antenna, and during the operation of the anti-drop sliding bearing 4, when the engaging size of the rotating shaft 42 and the shaft sleeve 41 is reduced, the rotating shaft 42 will receive the acting force along the direction of the component to be supported, but due to the blocking of the limiting boss 4111, the acting force will be evenly distributed on the limiting flange 423, and certainly, the limiting boss 4111 will also receive the corresponding reaction force, and the inclined arrangement of the limiting boss 4111 in the present invention will facilitate the decomposition of the acting force acting on the limiting boss 4111, thereby reducing the wear between the limiting flange 423 and the limiting boss 4111, and increasing the durability of the rotating shaft 42 and the shaft sleeve 41. Of course, in the embodiment of the present invention, the inclination angle of the limiting boss 4111 is not limited, as long as the limiting flange 423 can be blocked in one direction.

Referring to fig. 3, in the embodiment of the present invention, the protruding portion 422 of the rotating shaft 42 is provided with at least one first connection column 4221, which extends from the end surface of the protruding portion 422 to the matching portion 421 and is used for passing through a threaded connection to connect with a component to be supported. The first connecting column 4221 plays a limiting role in the threaded connecting piece, prevents the threaded connecting piece from shaking when the bearing 4 works, and strengthens the stability of the anti-falling sliding bearing 4 and parts connected with the anti-falling sliding bearing. In addition, the hole position on the first connection column 4221 for the threaded connection piece to pass through is a counter bore, so that the axial space in the mounting hole is saved.

In another embodiment of the present invention, at least one threaded hole is formed on the end surface of the engaging portion 421 and the protruding portion 422 that can pass through the rotating shaft 42, and the threaded hole is penetrated by a nut post to be connected with the member to be supported. In another embodiment of the present invention, a connecting sleeve is disposed at a connection position between 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 fit connection with the to-be-supported member. Obviously, the present invention is not limited to the manner of connecting the shaft 42 and the member to be supported.

Preferably, referring to fig. 4, the fitting portion 421 is recessed from the end surface to form a groove 4211, and the first coupling post 4221 has a through hole communicating with the groove 4211 for a screw connector to pass through the through hole from the groove 4211. As will be readily appreciated, the recessed groove formed in the end surface of the fitting portion 421 contributes to a reduction in weight of the rotating shaft 42, which contributes to a reduction in weight of the bearing 4. In addition, the inner edge of the groove 4211 is provided with a reinforcing rib 4123 for enhancing the toughness of the rotating shaft 42 and further strengthening the integral structure of the slip-proof sliding bearing 4.

Preferably, referring to fig. 5, the shaft sleeve 41 is provided with a face cover 4131 at the position-limiting end 413, and is provided with a relief hole 4132 through which the protruding portion 422 of the rotating shaft 42 passes and a connecting hole 4133 for mounting the shaft sleeve 41 to an external support. In one embodiment of the present invention, the coupling holes 4133 are threaded holes, and the shaft sleeve 41 can be coupled to the external supporting body by screws passing through the threaded holes. In another embodiment of the present invention, the connecting hole 4133 is a through hole filled with a dielectric material, and the shaft sleeve 41 can be connected to the external support body by a tapping screw penetrating through the dielectric material.

Preferably, the shaft sleeve 41 includes an inner ring (not numbered, hereinafter the same) and an outer ring (not numbered, hereinafter the same) which are coaxially disposed and are both connected to the face cover 4131, a plurality of second connecting columns 4122 are distributed between the inner ring and the outer ring, and each of the second connecting columns 4122 is provided with a through hole communicated with the connecting hole 4133, as shown in fig. 6.

Preferably, reinforcing ribs 4123 connected with the inner ring and the outer ring are arranged between two adjacent second connecting columns 4122. The reinforcing rib 4123 is used for enhancing the toughness of the shaft sleeve 41 and further strengthening the integral structure of the anti-slip sliding bearing 4.

Preferably, the end of the sleeve 41 opposite to the face cover 4131 is provided with a pair of positioning pins 4124 distributed along the diameter of the sleeve 41.

With continued reference to fig. 3, the locating pin 4124 is disposed on the outer ring of the sleeve 41. Referring to fig. 8, the external support is provided with a through hole corresponding to the attachment hole 4133 and a positioning hole corresponding to the positioning pin 4124, and the positioning pin 4124 is inserted into the positioning hole to fix the relative positions of the attachment hole 4133 and the through hole corresponding to the external support in advance, so that it is not necessary to adjust the positions of the attachment hole 4133 and the through hole of the external support one by one in the process of fixing the sleeve 41 and the external support by the connector. In another embodiment of the present invention, the positioning pin 4124 may be further provided on the reinforcing rib 4223 or the inner ring.

Preferably, the shaft sleeve 41 and the rotating shaft 42 are made of high-strength plastics or fiber reinforced plastics. High strength plastics and fiber reinforced plastics all have certain flexibility, also can strengthen the intensity of the slide bearing 4 structure of taking off of stopping for axle sleeve and pivot can to a certain extent fretwork setting, do not reduce structural strength when lightening its weight, promote the stability and the reliability of slide bearing 4 of taking off of stopping.

As shown in fig. 7, the present invention further provides an antenna 1000, which includes an antenna housing 1, an upper end mounting plate 2 and a lower end mounting plate 3 fixed at two ends of the antenna housing, a bearing 4 fixed on the upper end mounting plate 2, a driving module 5 fixed on the lower end mounting plate 3, and an antenna reflection plate 6 connected between the bearing 4 and the driving module 5, wherein the bearing 4 is the above-mentioned anti-drop sliding bearing 4, the shaft sleeve 41 is connected with the upper end mounting plate 2, and the rotation shaft 42 is connected with the antenna reflection plate 6.

Specifically, as shown in fig. 8, the upper end mounting plate 2 is provided with a positioning hole 21 corresponding to the positioning pin 4124 and a through hole corresponding to the connecting hole 4133 provided in the face cover 4131. As described above, the positioning pins 4124 are inserted into the positioning holes 21 for previously fixing the relative positions of the coupling holes 4133 and the through holes corresponding thereto on the external supporter.

The working process of the antenna of the invention is as follows: the remote control driving module drives the antenna reflecting plate to rotate so as to adjust the radiation direction of the antenna, and the rotating shaft is fixedly connected with the antenna reflecting plate, so that the rotating shaft can be further driven to rotate around the axial direction. In the antenna, the bearing is adopted, so that the movement of the rotating shaft is limited in the axial direction, and therefore, the rotating shaft cannot be separated from the shaft sleeve, the integral stability of the antenna is improved, and the service life of the antenna is prolonged.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An antenna comprises an antenna outer cover, an upper end mounting plate and a lower end mounting plate which are fixed at the upper end and the lower end in the antenna outer cover, a bearing fixed on the upper end mounting plate, a driving module fixed on the lower end mounting plate and an antenna reflecting plate connected between the bearing and the driving module, and is characterized in that the bearing comprises a shaft sleeve and a rotating shaft matched with the shaft sleeve, the shaft sleeve comprises a limiting end and a mounting end, and the middle of the shaft sleeve is provided with a mounting hole penetrating through the two ends; the rotating shaft comprises a matching part arranged in the mounting hole and a protruding part which penetrates out of the mounting hole and is used for connecting the antenna reflecting plate, the shaft sleeve and the matching part of the rotating shaft are designed to limit the rotating shaft from falling out of the shaft sleeve, the protruding part of the rotating shaft is provided with at least one first connecting column, the first connecting column extends from the end face of the protruding part to the matching part, and a threaded connecting piece penetrates through the protruding part and is connected with the antenna reflecting plate; the hole position on the first connecting column for the threaded connecting piece to pass through is a counter bore.

2. The antenna of claim 1, wherein the mounting end of the sleeve corresponds to the mating portion of the shaft, and the limiting end of the sleeve corresponds to the protruding portion of the shaft; the matching part of the rotating shaft is provided with a limiting flange at the periphery, and the limiting end of the shaft sleeve is provided with a limiting boss used for blocking the limiting flange in a one-way mode in the mounting hole.

3. The antenna of claim 2, wherein the limiting flange is formed by the engagement portion extending radially.

4. An antenna according to claim 3, wherein the stop boss is disposed obliquely toward the axis in a direction from the mounting end to the stop end, and the stop flange is configured to engage with the stop boss when it is slid to the stop boss.

5. The antenna of claim 1, wherein the mating portion is recessed from the end surface to form a recess, and the first connection post has a through hole communicating with the recess for passage of a threaded connection from the recess through the through hole.

6. The antenna of claim 1, wherein the shaft sleeve is provided with a face cover at the position-limiting end, and a yielding hole for the protruding part of the rotating shaft to penetrate through and a connecting hole for mounting the shaft sleeve on the upper end mounting plate are formed on the shaft sleeve.

7. The antenna of claim 6, wherein the shaft sleeve comprises an inner ring and an outer ring which are coaxially arranged and are both connected with the face cover, a plurality of second connecting columns are distributed between the inner ring and the outer ring, and each second connecting column is provided with a through hole communicated with the connecting hole.

8. The antenna of claim 7, wherein a reinforcing rib is disposed between two adjacent second connecting posts, and the reinforcing ribs are connected to the inner ring and the outer ring.

9. The antenna of claim 8 wherein the end of the sleeve opposite the face cap is provided with a pair of alignment pins distributed along a diameter of the sleeve.

10. The antenna of any one of claims 1 to 9, wherein the sleeve and the shaft are made of high strength plastic or fiber reinforced plastic.

11. The antenna of claim 9, wherein the upper mounting plate is provided with a positioning hole corresponding to the positioning pin and a through hole corresponding to the connecting hole of the face cover.