Multifunctional connecting assembly for small cell base station antenna device

Abstract

The present invention relates to a small cell base station antenna device, and more particularly, to a small cell base station antenna device comprising: a rotating housing having an inner space open in the front-rear direction; a steering ball joint part which is coupled to the inner space behind the opening of the rotary housing and guides the rotary housing to steer and rotate in the left-right direction about an arbitrary rotation center point in the inner space; an inclined ball joint part which is coupled to the inner space in front of the opening of the rotating housing, and which is coupled to the front end of the antenna module, and which is guided by the rotating housing about an arbitrary rotation center point in the inner space, and which is inclined in the vertical direction; and a plurality of coaxial cables configured to electrically connect a radio unit (RRH) and the antenna module.

Description

Technical Field

[0001] The present invention relates to a multifunctional connection component for a small cell base station antenna device, and more specifically, to a multifunctional connection component for a small cell base station antenna device that prevents the appearance of cables from being exposed, easily constructs an indoor small cell, and partitions a portion of an antenna module to cover different frequency bands or enables multiple antenna modules to cover different frequency bands respectively, thereby enabling beamforming to achieve multi-band small cell base station antenna devices. Background Art

[0002] In order to meet the increasing demand for wireless data communications after the commercialization of 4G communication systems, efforts are being made to develop improved 5G communication systems or pre-5G communication systems. For this reason, 5G communication systems or pre-5G communication systems are called communication systems after 4G networks (beyond 4G networks) or systems after LTE systems (Post LTE). In order to achieve high data transmission rates, 5G communication systems are being considered to be implemented in ultra-high frequency (mmWave) bands (e.g., 60GHz). In order to reduce the radio wave path loss in the ultra-high frequency band and increase the transmission distance of radio waves, beamforming, massive array multiple input and output (massive MIMO), full-dimensional multiple input and output (FD-MIMO), array antennas, analog beamforming, and massive antenna technology are being discussed in 5G communication systems.

[0003] In particular, various technologies for improving frequency efficiency can be applied to future 5G cellular networks that require higher capacity than the current capacity. Small cell network (SCN) technology, one of the candidate technologies, can improve channel availability by reducing the size of cells, increase cell density, improve frequency efficiency, and increase capacity.

[0004] Small cells are small cell base stations with low transmission power and narrow coverage, which are different from existing macro cells with high transmission power and large coverage. The scope of small cells is a general term for small power base station equipment below 10W, pico cells, femto cells, wireless networks (Wi-Fi), etc. The advantage of small cells is that compared with macro cells, they have low construction costs and small sizes, so they can improve space efficiency.

[0005] If such small cells are overlapped in public places, densely populated areas, and indoor areas such as large shopping malls or airport buildings, the capacity per unit area can be increased. This also has the advantage of reducing the power consumed by a macro cell base station and the installation cost. Using only small cell base stations can achieve 1,000 times the capacity of existing LTE, so it is predicted that small cells will become the basic technology connecting 4G and 5G.

[0006] According to the existing embodiment, the structure of the base station antenna device is as follows: an antenna module is installed on an upright pole arranged outdoors through a fixed bracket, a wireless unit (for example, RRH: radio remote head) is installed on the lower side of the antenna module through the fixed bracket, and the antenna module and the wireless unit are electrically connected by using multiple cables.

[0007] However, the existing base station antenna device has a structure that must be installed outdoors (outside a building) through a pole, and has an antenna module installed on the relatively upper side of the pole, and a wireless unit, such as RRH, installed on the relatively lower side, and then connected using a cable. Due to this structure, there is a problem that the cable is exposed to the outside and affects the appearance.

[0008] As mentioned above, when the small cell base station is set up indoors, the cable connection between the wireless unit RRH and the antenna module is complicated, which reduces the appearance. At the same time, each wireless unit RRH is only equipped with one antenna module, so it is difficult to cover the dual frequency bands in practice. Summary of the invention

[0009] (Problem to be solved)

[0010] The present invention is proposed to solve the above-mentioned technical problems, and its purpose is to provide a multifunctional connection component for a small cell base station antenna device, which can easily build a small cell base station in public places, densely populated areas and places such as large shopping malls or airport buildings.

[0011] At the same time, another object of the present invention is to provide a multifunctional connection component for a small cell base station antenna device: it is configured to adjust the direction of various cables electrically connecting the wireless unit and the antenna module without being exposed to the outside, thereby preventing a decrease in aesthetics (appearance aesthetics).

[0012] In addition, another object of the present invention is to provide a multifunctional connection component for a small cell base station antenna device as follows: a part of an antenna module is divided to cover different frequency bands or a plurality of antenna modules are used to cover different frequency bands respectively, thereby realizing dual-band in various places.

[0013] Then, another object of the present invention is to provide a multifunctional connection component for a small cell base station antenna device as follows: when multiple antenna modules are set for a wireless unit, a wide range of directional adjustment angles can be ensured.

[0014] The technical problems of the present invention are not limited to the problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description.

[0015] (Methods to solve the problem)

[0016] According to one embodiment of the present invention, a multifunctional connection component for a small cell base station antenna device includes: a rotating shell having an internal space opened in a front-to-rear direction; a steering ball joint portion, which is combined with the internal space behind the opening of the rotating shell, and guides the rotating shell to turn left and right based on an arbitrary rotation center point in the internal space (hereinafter referred to as the "steering rotation point"); a tilting ball joint portion, which is combined with the internal space in front of the opening of the rotating shell, and is combined with the front end of the antenna module to receive the guidance of the rotating shell and tilt in the up and down directions based on an arbitrary rotation center point in the internal space (hereinafter referred to as the "tilting rotation point"); a plurality of coaxial cables are configured to electrically connect a wireless unit (RRH) and the antenna module; wherein the plurality of coaxial cables are connected to the antenna module by penetrating the rotating shell, the steering ball joint portion and the tilting ball joint portion starting from the wireless unit.

[0017] Here, the steering rotation point and the tilting rotation point may be set at the same position in the inner space.

[0018] In addition, the steering ball joint portion and the tilting ball joint portion are arranged so as not to interfere with each other in the internal space during the steering rotation and the tilting rotation.

[0019] In addition, the steering ball joint portion is formed to have at least a portion of a circular outer circumferential surface that is concentric with the inner circumferential surface of the rotating shell; the outer circumferential surface can be formed to have the steering rotation point, with the steering rotation point as the center when the rotating shell is turned in the left and right directions.

[0020] In addition, the tilting ball joint portion is formed as at least a portion of a circular outer circumferential surface that is concentric with the inner circumferential surface of the rotating outer shell; the outer circumferential surface may have the tilting rotation point, and when the tilting ball joint portion is tilted and rotated in the up and down directions relative to the rotating outer shell, the tilting rotation point is used as the center.

[0021] In addition, the antenna module can be adjusted in rotation by steering in conjunction with the left-right steering angle of the rotating housing, and can be adjusted in tilting in conjunction with the tilt ball joint portion in conjunction with the up-down tilt angle of the rotating housing.

[0022] In addition, the tilt ball joint part and the steering ball joint part respectively include inner joints, which are accommodated in the internal space of the rotating shell; the inner joint is a friction force that allows rotation to contact the inner side surface of the rotating shell by providing an additional external force only after adjusting the steering rotation angle and the tilt rotation angle of the rotating shell when the antenna module is installed.

[0023] Furthermore, at least one friction sealing member may be interposed between the nipple and the rotating housing.

[0024] In addition, the friction sealing component may include: at least one waterproof seal, which is arranged at the front inclined entrance of the rotating shell where the inner joint is inserted in front of the opening of the rotating shell and at the rear turning entrance of the rotating shell behind the opening of the rotating shell; and at least one friction roller, which rolls in the rotation direction of the inner joint.

[0025] In addition, an upper drain portion and a lower drain portion may be provided on the upper end outer circumferential surface and the lower end outer circumferential surface of the rotating housing, and the upper drain portion and the lower drain portion are connected to the internal space to discharge the internal moisture.

[0026] In addition, the upper drainage part and the lower drainage part form a drainage opening horizontally, and an insulating part that blocks the drainage opening in a vertical direction may be formed.

[0027] In addition, the multifunctional connection component for the small cell base station antenna device may also include a cable containing tube, wherein one end of the cable containing tube is connected to the wireless unit, and the other end is connected to the steering ball joint to accommodate the multiple coaxial cables and allow the multiple coaxial cables to pass through and be concealed.

[0028] In addition, the steering ball joint includes: a steering outer support portion, one end of which is connected to the cable containing tube, and the other end of which is bent at a predetermined angle in the length direction and extends toward the rear steering entrance side of the rotating shell; and a steering inner joint, which extends from the other end of the steering outer support portion and has a curved and extended outer peripheral surface so that the left and right front end portions are respectively centered on an arbitrary steering rotation point formed in the rotating shell and are accommodated in the internal space of the rotating shell; wherein the left and right front ends of the steering inner joint can be at least extended to a position exceeding 180 degrees centered on the arbitrary steering rotation point.

[0029] In addition, the tilted ball joint portion includes: a tilted outer support portion, one end of which is connected to a female connector formed on the back portion of the antenna module, and the other end of which extends toward the front tilted entrance portion of the rotating shell; a tilted inner joint, which extends from the other end of the tilted outer support portion and has a curved and extended outer peripheral surface so that the upper and lower front end portions are respectively centered on an arbitrary tilted rotation point formed in the rotating shell and are accommodated in the internal space of the rotating shell; wherein the upper and lower front ends of the tilted inner joint can be at least extended to a position exceeding 180 degrees centered on the arbitrary tilted rotation point.

[0030] In addition, the multifunctional connection assembly for the small cell base station antenna device also includes at least one fixing tool, which passes through and fixes the rotating outer shell, and interferes with the rotation path of the steering inner joint or the tilting inner joint. The at least one fixing tool can be a headless bolt that is arranged so that the outer end does not protrude to the outside of the rotating outer shell.

[0031] In addition, a portion of the turned outer support portion is configured as a combined panel that is separately manufactured and then combined with the plurality of coaxial cables disposed therein, and the combined panel can be combined by any one of an adhesive bonding method and a welding bonding method.

[0032] (Effects of the Invention)

[0033] The multifunctional connection component for a small cell base station antenna device according to an embodiment of the present invention can produce the following various effects.

[0034] First, the direction of the antenna module can be easily adjusted even in a narrow space, so it is easy to build a small cell base station.

[0035] Secondly, the various cables electrically connecting the wireless unit and the antenna module are arranged so that their directions are not exposed to the outside and the direction can be adjusted, thereby having the effect of preventing the appearance (appearance) from being deteriorated.

[0036] Third, there is no need to ensure space for additional tilt ball joints and steering ball joints, so a compact setup can be achieved. The angle can be adjusted through each ball joint, thereby ensuring that the angle of multiple antenna modules over a wide range can be adjusted in the direction of the wireless unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a perspective view showing a configuration in which an antenna module is provided for a wireless unit using a multifunctional connection assembly for a small cell base station antenna device according to the present invention;

[0038] Figure 2a and Figure 2b yes Figure 1 A perspective view of the front and rear parts of the structure excluding the wireless unit;

[0039] Figure 3a and Figure 3b yes Figure 2a and Figure 2b Exploded stereogram of

[0040] Figure 4 It is along Figure 2a The cross-sectional view taken along line BB;

[0041] Figure 5 It is along Figure 2aThe BB line cuts the front and back of the three-dimensional image;

[0042] Figure 6a and Figure 6b An exploded perspective view of a multifunctional connection assembly for a small cell base station antenna device according to an embodiment of the present invention is shown;

[0043] Figure 7a and Figure 7b is a vertical cross-sectional view and a horizontal cross-sectional view of a multifunctional connection assembly for a small cell base station antenna device according to an embodiment of the present invention;

[0044] Figure 8a and Figure 8b are shown separately Figure 7a After the tilt rotation and Figure 7b A vertical cross-sectional view and a horizontal cross-sectional view showing the state of the antenna module after the steering rotation.

[0045] (Explanation of Reference Numerals)

[0046] A: Antenna module RRH: Radio unit

[0047] 100: Multifunctional connection assembly 110: Rotating housing

[0048] 130: inclined ball joint part 131: inclined outer support part

[0049] 132: Tilt inner joint 140: Steering ball joint

[0050] 141: Steering outer support 142: Steering inner joint

[0051] 150: Cable storage tube 160: Coaxial cable

[0052] 170A, 170R: Male connector TC: Tilt pivot point

[0053] SC: Steering rotation point DETAILED DESCRIPTION

[0054] Hereinafter, a multifunctional connection assembly for a small cell base station antenna device according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0055] In attaching reference numerals to components of the various drawings, it should be noted that for identical components, even if they are shown in different drawings, they should have the same reference numerals as much as possible. In addition, when describing the embodiments of the present invention, if it is determined that the detailed description of the relevant known structure or function hinders the understanding of the embodiments of the present invention, the detailed description will be omitted.

[0056] When describing the components of the embodiments of the present invention, the terms first, second, A, B, (a), (b), etc. may be used. Such terms are only used to distinguish one component from other components, and the nature or order of the components shall not be limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by ordinary technicians in the field to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as consistent with the meaning in the relevant technical articles and shall not be interpreted in an ideal or overly formal sense unless clearly defined in this application.

[0057] Figure 1 is a perspective view showing a configuration in which an antenna module is provided for a wireless unit using a multifunctional connection assembly for a small cell base station antenna device according to the present invention; Figure 2a and Figure 2b yes Figure 1 A three-dimensional diagram of the front and rear parts of the structure excluding the wireless unit.

[0058] like Figure 1 to Figure 2b As shown, the multifunctional connection component 100 for a small cell base station antenna device according to one embodiment of the present invention serves as a medium for performing the physical combination and electrical connection between the wireless unit RRH (remote radio head) and the antenna module A in the structure of the small cell base station antenna device installed in a predetermined location.

[0059] Here, the predetermined place for installing the small cell base station antenna device according to the present invention refers to public places, densely populated areas and places such as large shopping malls or airport buildings, so as to perform the function of a small cell base station. Depending on the type of installation, it can be a structure suitable for installation in a building (indoors), such as a pole-mounted type, a wall-mounted type and a ceiling-mounted type.

[0060] The antenna module A may refer to an antenna module having at least one frequency band. In addition, the radio unit RRH is connected to the antennas of each frequency band provided in the antenna module A, and may refer to a device for transmitting and receiving between the antenna and the base station. The radio unit RRH is a relay device that has the functions of receiving a weakened signal between the base station of the mobile communication system and the mobile communication terminal, amplifying it, and then transmitting it, or shaping the distorted waveform and adjusting the time, etc.

[0061] like Figure 1 As shown, in the structure of the small cell base station antenna device, the radio unit RRH can be installed on a structure such as a pole, a wall, or a ceiling indoors (inside a building) through a mounting bracket 10 .

[0062] To this end, the mounting bracket 10 is pre-firmly coupled to the above-mentioned structure, etc., and can be fixed to multiple locations of the left and right ends of the wireless unit RRH using fixing screws 13 through screw fastening grooves 12 formed at screw fastening ends 11 that are bent and protruded toward the left and right fronts.

[0063] On the other hand, in the wireless unit RRH, a plurality of heat sink fins 15 are formed integrally on the front of a front shell (no reference numeral) or the back of a rear shell (no reference numeral), and heat generated in a predetermined space can be dissipated to the outside through the plurality of heat sink fins 15.

[0064] like Figure 1 to Figure 2b As shown, the multifunctional connection component 100 of the small cell base station antenna device according to the present invention performs the role of a coupling medium in coupling at least one antenna module A with a radio unit RRH.

[0065] In more detail, any part of the wireless unit RRH and any part of each of more than one antenna modules A can be configured with at least one female connector 50A, 50R, and the female connectors 50A, 50R respectively mediate the connection with the multi-functional connecting component 100 for the small cell base station antenna device according to an embodiment of the present invention.

[0066] Here, the female connector 50R configured in the wireless unit RRH is not only configured in a portion where a part of the plurality of heat dissipation fins 15 formed integrally with the front or back of the wireless unit RRH is removed, but can also be configured in any of the left and right sides and the bottom.

[0067] However, if Figure 1 to Figure 2b As shown, in the multifunctional connection assembly 100 for a small cell base station antenna device according to an embodiment of the present invention, the description is made with the setting that the female connector 50R is arranged on the upper surface of the radio unit RRH.

[0068] Figure 3a and Figure 3b yes Figure 2a and Figure 2b Exploded stereogram of Figure 4 It is along Figure 2a The cross-sectional view taken along line BB; Figure 5 It is along Figure 2a The BB line cuts the front and back of the three-dimensional image; Figure 6a and Figure 6b An exploded perspective view of a multifunctional connecting assembly for a small cell base station antenna device according to an embodiment of the present invention is shown.

[0069] like Figures 3a to 6bAs shown, a multifunctional connection component 100 for a small cell base station antenna device according to an embodiment of the present invention includes: a rotating housing 110, which is configured to be rotatable in parallel with at least one side of a wireless unit RRH, and has an internal space, accommodating a plurality of coaxial cables 160 in a front-to-rear direction and penetrated by the plurality of coaxial cables 160, wherein the coaxial cables 160 are configured to electrically connect the wireless unit RRH and at least one antenna module A; a steering ball joint portion 140, which is coupled to the rear of the rotating housing 110 to provide a steering rotation center for the rotating housing 110 in the left-right direction; and a tilting ball joint portion 130, which is coupled to the front of the rotating housing 110 and is coupled to the rotating housing 110 so as to be tiltably rotatable in the front-to-rear direction.

[0070] Here, the rotating housing 110 may have an internal space 112 opened in the front-rear direction. Hereinafter, the front opened to communicate with the internal space 112 of the rotating housing 110 is referred to as "front inclined inlet 111U-T, 111D-T", and the rear opened to communicate with the internal space 112 of the rotating housing 110 is referred to as "rear turning inlet 111U-S, 111D-S".

[0071] On the other hand, the steering ball joint 140 is connected to the internal space 112 through the rear steering inlets 111U-S and 111D-S behind the opening of the rotating shell 110, and can guide the rotating shell 110 to perform left and right steering rotation based on any rotation center point SC in the internal space 112 (hereinafter referred to as the "steering rotation point").

[0072] In addition, the tilting ball joint portion 130 is connected to the internal space 112 through the front tilting entrances 111U-T and 111D-T in front of the opening of the rotating shell 110, and can be configured so that the front end of the combined antenna module A can be guided by the rotating shell 110 and tilted and rotated in the up and down directions with respect to any rotation center point TC (hereinafter referred to as the "tilting rotation point") in the internal space 112.

[0073] The steering rotation point SC and the tilt rotation point TC may be set at the same position in the inner space 112 of the rotating housing 110 .

[0074] In more detail, the steering ball joint portion 140 is formed to have at least a portion of a circular outer circumferential surface that is concentric with the inner circumferential surface of the rotating housing 110, and the outer circumferential surface of the steering ball joint portion 140 is formed to have a steering rotation point SC, and the steering rotation point SC is used as the center when the rotating housing 110 is turned in the left and right directions; the tilting ball joint portion 130 is formed to have at least a portion of a circular outer circumferential surface that is concentric with the inner circumferential surface of the rotating housing 110, and the outer circumferential surface of the tilting ball joint portion 130 can be formed to have a tilting rotation point TC, and the tilting rotation point TC is used as the center when the tilting ball joint portion 130 is tilted and rotated in the up and down directions relative to the rotating housing 110.

[0075] Here, at least one antenna module A is adjusted in rotation in conjunction with the left-right steering angle of the rotating housing 110 , and can be adjusted in tilting in conjunction with the tilt ball joint 130 in conjunction with the front-rear tilt angle of the rotating housing 110 .

[0076] That is, when the antenna module A is adjusted for turning, the rotating housing 110 rotates relative to the fixed turning ball joint 140 , and the tilting ball joint 130 disposed in the front can be rotated in conjunction with it.

[0077] In addition, when adjusting the tilt rotation of the antenna module A, the ball joint 130 is rotated relative to the fixed rotating housing 110 when the rotation adjustment is completed (finished), thereby adjusting the tilt rotation of the antenna module A connected to the front.

[0078] Here, if Figure 3a and Figure 3b As shown, the rotating housing 110 performs the function of forming an internal space 112 to accommodate a part of the structure of the tilting ball joint part 130 and the steering ball joint part 140 (the tilting inner joint 132 and the steering inner joint 142 described later), and may include an upper housing 110U located at the upper part and a lower housing 110D located at the lower part.

[0079] The above-mentioned internal space is formed between the upper shell 110U and the lower shell 110D, and the front tilting entrances 111U-T and 111D-T are respectively formed in the front part of the boundary part where the upper shell 110U and the lower shell 110D are combined with each other, and a part of the tilting ball joint part 130 (the tilting inner joint 132) is inserted and accommodated, and a tilting rotation range is given to the tilting ball joint part 130; the rear steering entrances 111U-S and 111D-S can be respectively formed in the rear part of the boundary part where the upper shell 110U and the lower shell 110D are combined with each other, and a part of the steering ball joint part 140 (the steering inner joint 142) can be inserted and accommodated, and a steering rotation range can be formed to give the steering ball joint part 140.

[0080] Here, the multifunctional connection assembly 100 for a small cell base station antenna device according to an embodiment of the present invention may further include a plurality of coaxial cables 160 , wherein the plurality of coaxial cables 160 are configured to electrically connect the radio unit RRH and the antenna module A.

[0081] The plurality of coaxial cables 160 may be connected to the antenna module A by penetrating the rotating housing 110 , the steering ball joint 140 , and the tilting ball joint 130 from the wireless unit RRH.

[0082] On the other hand, Figures 3a to 6b As shown, the multifunctional connecting component 100 for the small cell base station antenna device according to one embodiment of the present invention may also include a cable containing tube 150, one end of which is connected to the wireless unit RRH, and the other end is connected to the steering ball joint 140 to accommodate multiple coaxial cables 160 and allow the multiple coaxial cables 160 to pass through and be concealed.

[0083] Here, the steering ball joint portion 140 may include: a steering outer support portion 141, one end of which is connected to the cable containing tube 150, and the other end of which is bent at a predetermined angle in the length direction and extends toward the rear steering inlet 111U-S, 111D-S side of the rotating shell 110; a steering inner joint 142, which extends from the other end of the steering outer support portion 141 and has a curved and extended outer peripheral surface so that the left and right front end portions respectively take any steering rotation point SC formed in the rotating shell 110 as the same center, and are accommodated in the internal space 112 of the rotating shell 110.

[0084] Preferably, the left and right front ends of the inner steering joint 142 can be extended to at least a position exceeding 180 degrees with the arbitrary steering rotation point SC as the center.

[0085] Here, a portion of the turned outer support portion 141 is configured as a combining panel 144 that is manufactured separately and then combined after multiple coaxial cables 160 are set inside; the combining panel 144 is combined by any one of adhesive bonding and welding bonding after the coaxial cables 160 are set inside.

[0086] In this regard, male connectors 170A and 170R with slightly larger diameters are welded to the front ends of the multiple coaxial cables 160 to facilitate electrical connection with the female connector 50A fixed to the back of the antenna module A and the female connector 50R fixed to the wireless unit RRH. In order to facilitate the insertion and setting of the bent portion that turns to the outer support portion 141, the connecting panel 144 is constructed to be manufactured separately and then connected.

[0087] At the same time, the tilted ball joint portion 130 may include: a tilted external support portion 131, one end of which is connected to the female connector 50A formed on the back of the antenna module A, and the other end of which extends toward the front tilted entrance 111U-T, 111D-T portion of the rotating shell 110; a tilted internal joint 132, which extends from the other end of the tilted external support portion 131 and has a curved and extended outer peripheral surface so that the upper and lower front end portions respectively take any tilted rotation point TC formed in the rotating shell 110 as the same center, and are accommodated in the internal space 112 of the rotating shell 110.

[0088] Preferably, the upper and lower front ends of the tilt inner joint 132 can be extended to at least a position exceeding 180 degrees with the arbitrary tilt rotation point TC as the center.

[0089] That is, the tilt ball joint portion 130 and the steering ball joint portion 140 may include a tilt inner joint 132 and a steering inner joint 142 respectively accommodated in the inner space 112 of the rotating housing 110 .

[0090] However, the tilting ball joint portion 130 and the steering ball joint portion 140 can be respectively configured so that when the front ends of the tilting inner joint 132 and the steering inner joint 142 extend to a position exceeding 180 degrees with the tilting rotation point TC and the steering rotation point SC as the center, they will not interfere with each other in the internal space 112 of the rotating shell 110 during steering rotation and tilt rotation.

[0091] Here, the tilting inner joint 132 and the steering inner joint 142 allow the friction force of rotation to contact and combine with the inner side surface of the rotating shell 110 by providing an additional external force only after adjusting the steering rotation angle and the tilt rotation angle of the rotating shell 110 when the antenna module A is installed.

[0092] This is to perform a pre-stop function in a state where the load of the antenna module A itself is fully included to prevent random rotation unless additional external force is provided when the staff performs a steering rotation or tilt rotation adjustment operation.

[0093] To this end, at least one friction sealing member 133 , 134 , 143 a , 143 b may be interposed between the tilt inner joint 132 and the steering inner joint 142 and the rotating outer housing 110 .

[0094] Here, the friction sealing component (133, etc.) may include: at least one waterproof seal 133, 143a, 143b, which is arranged at the front inclined entrance 111U-T, 111D-T of the rotating shell 110 into which the inclined inner joint 132 and the steering inner joint 142 are inserted and the rear steering entrance 111U-S, 111D-S of the rotating shell 110; at least one friction roller 134, 117, which rolls in the rotation direction of the inclined inner joint 132 and the steering inner joint 142.

[0095] Among the friction rollers 134 and 117, the friction roller 134 interposed in the inclined inner joint 132 may be configured in a rod shape that rolls in an inclined rotation direction on the outer peripheral surface of the inclined inner joint 132; among the friction rollers 134 and 117, the friction roller 117 interposed in the steering inner joint 142 may be inserted into the friction member installation grooves 116U and 116D formed on the inner side surface of the frame of the upper housing 110U and the lower housing 110D. Here, the friction roller 117 is formed of Teflon material and may be a member filled with rubber material inside.

[0096] At the same time, the multifunctional connecting assembly 100 for a small cell base station antenna device according to an embodiment of the present invention may also include at least one fixing tool 119a, 119b, which passes through the fixed rotating housing 110 to interfere with the rotation path of the steering inner joint 142 or the tilting inner joint 132.

[0097] Here, at least one of the fixing tools 119 a and 119 b may be a headless bolt which is arranged so that the outer end thereof does not protrude to the outside of the rotating housing 110 .

[0098] Therefore, the staff uses the tilting inner joint 132 and the steering inner joint 142 combined in the rotating housing 110 to have a pre-stop function to stably adjust the direction of the antenna module A, and then uses the fixing tools 119a and 119b composed of headless bolts to finally complete the direction adjustment of the antenna module A.

[0099] Here, at least one fixing tool 119a, 119b may include: an inclined fixing portion 119a, configured to contact or interfere with the outer peripheral surface of the inclined inner joint 132 accommodated in the internal space 112 of the rotating shell 110; and a steering fixing portion 119b, configured to contact or interfere with the outer peripheral surface of the steering inner joint 142 accommodated in the internal space 112 of the rotating shell 110.

[0100] At the same time, if Figures 3a to 6b As shown, in a multifunctional connection assembly 100 for a small cell base station antenna device according to an embodiment of the present invention, the upper outer circumference and the lower outer circumference of the rotating shell 110 may also have an upper drainage portion 120U and a lower drainage portion 120D that are connected to the internal space 112 to discharge internal moisture.

[0101] The upper drainage portion 120U and the lower drainage portion 120D are formed horizontally as drainage outlets (no reference numerals) for actually discharging moisture (water), and as insulating portions (no reference numerals) for vertically shielding the drainage outlets, so that moisture such as rainwater is difficult to enter the interior of the rotating housing 110 from the outside, and moisture entering the interior of the rotating housing 110 at one end is easily discharged through the drainage outlets opening in the horizontal direction.

[0102] Figure 7a and Figure 7b is a vertical cross-sectional view and a horizontal cross-sectional view of a multifunctional connection assembly for a small cell base station antenna device according to an embodiment of the present invention; Figure 8a and Figure 8b are shown separately Figure 7a After the tilt rotation and Figure 7b A vertical cross-sectional view and a horizontal cross-sectional view showing the state of the antenna module after the steering rotation.

[0103] The following is a brief description of the tilting and turning movements of the antenna module A of the multifunctional connecting assembly 100 for a small cell base station antenna device according to an embodiment of the present invention constructed as described above.

[0104] First, if Figure 7a and Figure 8a As shown, the antenna module A is combined with the tilting ball joint part 130, and the tilting ball joint part 130 is fixed in the internal space 112 of the rotating shell 110 by the fixing tool 119a. In order to adjust the tilt of the antenna module A, the on-site staff releases the fixing state of the tilting ball joint part 130 by the fixing tool 119a. Thereafter, if an external force is applied to the antenna module A in any direction of the upward and downward directions, the tilting ball joint part 130 is guided by the internal space 112 of the rotating shell 110 and the front end can be tilted and rotated in the upward and downward directions.

[0105] After the on-site staff adjusts the antenna module A to the desired tilt angle, the fixing tool 119a is used again to stably fix the tilt ball joint 130 inside the rotating housing 110, thereby completing the tilt rotation adjustment.

[0106] Then, if Figure 7b and Figure 8b As shown, when the rotating housing 110 is fixed by the steering ball joint 140, in order to adjust the steering of the antenna module A, the on-site staff releases the fixed state of the rotating housing 110 by the fixing tool 119b. Thereafter, if an external force is applied to the antenna module A in either the left or right direction, the rotating housing 110 is guided by the steering ball joint 140 and rotates in the left or right direction.

[0107] Similarly, after the on-site staff adjusts the antenna module A to the desired steering angle, they use the fixing tool 119b again to fix the rotating housing 110 to the steering ball joint 140, thereby completing the steering rotation adjustment.

[0108] As described above, the multifunctional connection assembly 100 for a small cell base station antenna device according to one embodiment of the present invention is that the tilting inner joint 132 of the tilting ball joint part 130 and the steering inner joint 142 of the steering ball joint part 140 are compactly arranged in the internal space 112 of the rotating shell 110 without rotational interference with each other, and after each steering rotation adjustment and tilt rotation adjustment, they are stably fixed by fixing tools 119a and 119b, thereby improving operability. Not only that, it also provides the advantage of preventing the appearance from being deteriorated.

[0109] The above is a detailed description of the multifunctional connection assembly 100 for a small cell base station antenna device according to an embodiment of the present invention with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above embodiments, but a person skilled in the art of the present invention can certainly make various modifications and implement them within the same scope. Therefore, the true scope of the present invention should be defined by the claims.

[0110] Industrial Applicability

[0111] The present invention provides a multifunctional connection component for a small cell base station antenna device, which is easy to build a small cell base station in public places, densely populated areas and places such as large shopping malls or airport buildings; it is configured so that the direction can be adjusted without exposing various cables between the electrically connected wireless unit and the antenna module to the outside, thereby preventing the aesthetics (appearance aesthetics) from being reduced; a part of an antenna module is divided to cover different frequency bands or a plurality of antenna modules are used to cover different frequency bands respectively, thereby realizing dual-band in various places; and a wide range of directional adjustment angles can be ensured.

Claims

1. A multifunctional connection assembly for a small cell base station antenna device, comprising: The rotating housing has an inner space opened in a front-rear direction; A steering ball joint part is coupled to the internal space behind the opening of the rotating housing, and guides the rotating housing to perform left-right steering rotation based on any rotation center point (hereinafter referred to as "steering rotation point") in the internal space; A tilt ball joint part is coupled to the internal space in front of the opening of the rotating housing, and is coupled to the front end of the antenna module to be guided by the rotating housing and tilted and rotated in an up-and-down direction while being guided by the rotating housing with respect to any rotation center point (hereinafter referred to as "tilt rotation point") in the internal space; and a plurality of coaxial cables configured to electrically connect a radio unit (RRH) and the antenna module; The plurality of coaxial cables are connected to the antenna module by penetrating the rotating housing, the steering ball joint and the tilting ball joint from the wireless unit.

2. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: The steering rotation point and the tilt rotation point are set at the same position in the inner space.

3. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: The steering ball joint and the tilting ball joint are arranged so as not to interfere with each other in the internal space during the steering rotation and the tilting rotation.

4. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: The steering ball joint portion is formed to have at least a portion of an outer peripheral surface that forms a circle concentric with the inner peripheral surface of the rotating housing; The outer peripheral surface is formed to have the steering rotation point, and the steering rotation point is used as the center when the rotating housing is turned in the left-right direction.

5. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: The inclined ball joint portion is formed to have at least a portion of an outer peripheral surface that forms a circle concentric with the inner peripheral surface of the rotating housing; The outer peripheral surface is formed to have the tilt rotation point, and the tilt ball joint portion is centered on the tilt rotation point when the tilt ball joint portion is tilted and rotated in the vertical direction with respect to the rotating housing.

6. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: The antenna module is adjusted in rotational direction in conjunction with the left-right rotation angle of the rotating housing, and is adjusted in tilting direction in conjunction with the tilt ball joint portion for the vertical rotation angle of the rotating housing.

7. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: The tilting ball joint part and the steering ball joint part respectively include an inner joint, and the inner joint is accommodated in the inner space of the rotating housing; The inner joint is in contact with the inner side surface of the rotating housing by friction force that allows rotation through an additional external force provided only after the rotating housing is adjusted in a turning angle and a tilting angle in a state where the antenna module is installed.

8. The multifunctional connection assembly for a small cell base station antenna device according to claim 7, characterized in that: At least one friction sealing member is interposed between the nipple and the rotating housing.

9. The multifunctional connection assembly for a small cell base station antenna device according to claim 8, characterized in that: The friction sealing component includes: at least one waterproof seal, which is arranged at the front inclined entrance of the rotating shell for inserting the inner joint in front of the opening of the rotating shell and the rear turning entrance of the rotating shell behind the opening of the rotating shell; and at least one friction roller, which rolls in the rotation direction of the inner joint.

10. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: An upper drainage portion and a lower drainage portion are provided on the upper end outer circumferential surface and the lower end outer circumferential surface of the rotating shell, and the upper drainage portion and the lower drainage portion are communicated with the internal space to discharge the internal moisture.

11. The multifunctional connection assembly for a small cell base station antenna device according to claim 10, characterized in that: The upper drainage part and the lower drainage part form a drainage opening horizontally and form an isolation part to shield the drainage opening in a vertical direction.

12. The multifunctional connection assembly for a small cell base station antenna device according to claim 1, characterized in that: Also includes: The cable accommodating tube has one end connected to the wireless unit and the other end connected to the steering ball joint so as to accommodate the multiple coaxial cables and allow the multiple coaxial cables to pass through and be concealed.

13. The multifunctional connection assembly for a small cell base station antenna device according to claim 12, characterized in that: The steering ball joint portion comprises: A turning outer support portion, one end of which is connected to the cable containing tube, and the other end of which is bent at a predetermined angle in the length direction and extends toward the rear of the rotating housing and toward the entrance portion; and A steering inner joint extending from the other end of the steering outer support portion and having a curved and extended outer peripheral surface so that the left and right front end portions are respectively centered on any steering rotation point formed in the rotating housing and are accommodated in the internal space of the rotating housing; Wherein, the left and right front ends of the steering inner joint at least extend to a position exceeding 180 degrees with the arbitrary steering rotation point as the center.

14. The multifunctional connection assembly for a small cell base station antenna device according to claim 12, characterized in that: The tilting ball joint portion comprises: an inclined outer support portion, one end of which is connected to a female connector formed on the back of the antenna module, and the other end of which extends toward the front inclined entrance portion of the rotating housing; and An inclined inner joint extending from the other end of the inclined outer support portion and having a curved and extended outer peripheral surface so that upper and lower front end portions are respectively centered on any inclined rotation point formed in the rotating housing and are accommodated in the internal space of the rotating housing; Wherein, the upper and lower front ends of the inclined inner joint are extended to at least a position exceeding 180 degrees with the arbitrary inclined rotation point as the center.

15. The multifunctional connection assembly for a small cell base station antenna device according to claim 13 or 14, characterized in that: Also includes: At least one fixing tool, which penetrates and fixes the rotating housing and interferes with the rotation path of the steering inner joint or the tilting inner joint; The at least one fixing tool is a headless bolt which is arranged so that the outer end thereof does not protrude to the outside of the rotating housing.

16. The multifunctional connection assembly for a small cell base station antenna device according to claim 12, characterized in that: A portion of the turned-outward support portion is configured as a combined panel that is separately manufactured and then combined with the plurality of coaxial cables disposed therein; The combined panels are combined by any one of adhesive combination and welding combination.

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