Multifunctional connecting rod assembly for small base station antenna device

Abstract

The present invention relates to a small-sized base station antenna device, and more particularly, to a small-sized base station antenna device comprising: a fixed housing having an inner space opened in one side direction and the other side direction; and a directivity adjustment mechanism movably coupled to an internal space of the fixed housing or an external space corresponding to the outside of the fixed housing, the directivity adjustment mechanism being coupled so as to adjust the directivity of the antenna module when the antenna module provided at a front end portion of the fixed housing is rotated in a left-right turning manner or in an up-down tilting manner. Therefore, separation is prevented. This provides the advantages of improving the operability of indoor settings and facilitating the construction of small cellular base stations.

Description

Technical Field

[0001] The present invention relates to a multi-functional link assembly for a small cell base station antenna device (MULTI-FUNCTIONAL LINKASSEMBLY FOR SMALL CELL BASE STATION ANTENNA APPARATUS), and more particularly, to a multi-functional link assembly for a small cell base station antenna device as follows: the multi-functional link assembly is configured to prevent cables from being exposed to the outside and facilitate the construction of an indoor small cell (Smal l Cell), and can cover different frequency bands by dividing a part of an antenna module, or making multiple antenna modules cover different frequency bands respectively, so that beamforming can be performed to achieve multiple frequency bands. Background Art

[0002] In order to meet the growing demand for wireless data traffic after the commercialization of the 4G communication system, efforts are being made to develop an improved 5G communication system or a quasi-5G (pre-5G) communication system. For this reason, the 5G communication system or the quasi-5G communication system is called a Beyond 4G Network communication system or a Post LTE system. In order to achieve high data transmission rates, the implementation of the 5G communication system in the ultra-high frequency (mmWave) band (for example, the 60 Hz (60 GHz) band, etc.) is being considered. In order to alleviate the path loss of radio waves in the ultra-high frequency band and increase the transmission distance of radio waves, in the 5G communication system, beamforming, massive array multiple input / output (massive MIMO), full dimensional multiple input / output (Full Dimensional MIMO: FD-MIMO), array antenna, analog beam-forming and large scale antenna technologies are being discussed.

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

[0004] Different from the existing macrocells with high transmission power and wide coverage, small cells are small base stations with low transmission power and narrow coverage. Small cells generally refer to low-power base station equipment below 10W, pico cells, femto cells, Wi-Fi, etc. The advantage of small cells is that their construction cost is lower than that of macrocells, and their size is small, so they can improve space efficiency.

[0005] If these small cells are deployed in overlapping locations in public places, densely populated areas, and indoor locations such as large shopping malls or airport buildings, the capacity per unit area can be increased. This can reduce the power consumption and installation costs of a macro cell base station, which is another advantage. Small cells are expected to become the basic technology for connecting 4G and 5G, as they can achieve 1,000 times the capacity of existing LTE using only small cell base stations.

[0006] The base station antenna device of the existing embodiment is set outdoors (outdoors), and it consists of the following structure: the antenna module is installed on an upright support pole through a fixed bracket, and the wireless unit (such as a radio frequency remote head (RRH: Remote Radio Head)) is installed on the lower side of the antenna module through a fixed bracket, and a plurality of cables are used to electrically connect the antenna module and the wireless unit.

[0007] However, the structure of the existing base station antenna device is limited to outdoor (outdoor) installation through a support pole, and the antenna module is installed on the relatively upper side of the support pole. Since it is composed of a structure in which a wireless unit such as a radio frequency remote head is installed on the relatively lower side and connected by a cable, the cable is exposed to the outside, thereby posing a problem of damaging the aesthetics.

[0008] As mentioned above, when a small cell base station is set up indoors, the cable connection between the wireless unit RRH and the antenna module is complicated, which damages the appearance. On the other hand, each wireless unit RRH has only one antenna module, so there is a problem of difficulty in dual-frequency band coverage in reality. Summary of the invention

[0009] Technical issues

[0010] The present invention is proposed to solve the above technical problems, and its purpose is to provide a multifunctional connecting rod assembly for a small base station antenna device as follows: it is convenient to build small cell base stations in public places, densely populated areas, large shopping malls or airport buildings.

[0011] Furthermore, another object of the present invention is to provide a multifunctional connecting rod assembly for a small base station antenna device as follows: it is configured to be able to adjust the direction without exposing various cables used to electrically connect the wireless unit and the antenna module to the outside, thereby preventing the aesthetics (appearance) from being reduced.

[0012] Furthermore, another object of the present invention is to provide a multifunctional connecting rod assembly for a small base station antenna device as follows: it is configured to cover different frequency bands by dividing a part of an antenna module, or to make multiple antenna modules cover different frequency bands respectively, so that dual-frequency can be achieved in various places.

[0013] In addition, another object of the present invention is to provide a multifunctional connecting rod assembly for a small base station antenna device as follows: it can ensure a wide range of directional adjustment angles by mediating the arrangement of multiple antenna modules relative to a wireless unit.

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

[0015] Means of solving the problem

[0016] A multifunctional connecting rod assembly for a small base station antenna device according to one embodiment of the present invention comprises: a fixed shell having an internal space opening in one direction and in another direction; and a directional adjustment mechanism movably coupled to the internal space of the fixed shell or an external space corresponding to the outside thereof, wherein the directional adjustment mechanism is coupled in the following manner: when the antenna module arranged at the front end portion relative to the fixed shell is turned left and right or rotated upward and downward, it is locked and prevented from detaching.

[0017] The antenna module can be coupled to the one side of the fixed housing through the directional adjustment mechanism, and the wireless unit can be coupled to the other side of the fixed housing through a cable receiving tube for hiding and receiving multiple coaxial cables.

[0018] Furthermore, the invention may include a pair of housing covers, which are manufactured in two pieces and combined in a form in which the outer structures provided on the relatively outer sides of the fixed housing and the directional adjustment mechanism surround the inner structures.

[0019] Furthermore, the directional adjustment mechanism can move around any tilt rotation center point (hereinafter referred to as the "tilt rotation point") and any steering rotation center point (hereinafter referred to as the "steering rotation point") formed in the internal space of the fixed shell, so that the front surface of the antenna module is fixed at a specified angle relative to the wireless unit.

[0020] Furthermore, the directional adjustment mechanism may include at least one of a steering mechanism and a tilting mechanism, wherein the steering mechanism adjusts the steering rotation of the antenna module while rotating in the left and right directions with the steering rotation point set in the up and down directions through the fixed shell as the center; and the tilting mechanism adjusts the tilt rotation of the antenna module while tilting in the forward and backward directions with the tilt rotation point set in the left and right directions through the fixed shell as the center.

[0021] Furthermore, the directional adjustment mechanism may include the steering mechanism and the tilting mechanism, and the steering mechanism and the tilting mechanism may be integrated in a ball joint portion, and a portion of the ball joint portion is inserted between a shell cover on one side and a shell cover on the other side of the fixed shell manufactured in two pieces and rotates.

[0022] Furthermore, a friction stop ring may be interposed between the one housing cover and the other housing cover, the friction stop ring preventing the ball joint portion from being separated and closely attached to a friction seal component formed on an outer peripheral surface of the ball joint portion.

[0023] Furthermore, the directional adjustment mechanism may include the tilt mechanism, and the tilt mechanism may include an inner joint, a part of which is inserted between one side housing cover and the other side housing cover of the fixed housing manufactured in two pieces and rotated.

[0024] Furthermore, the housing cover on one side of the fixed housing may be an upper housing cover relatively located at the upper part, and the housing cover on the other side of the fixed housing may be a lower housing cover relatively located at the lower part.

[0025] Furthermore, one end of the cable housing tube can be orthogonally connected to the rear end of the fixed shell, and the other end of the cable housing tube is connected to the wireless unit. In the fixed shell, the front end can be connected in a manner that allows it to turn and rotate in the left and right directions based on the center of the cable housing tube.

[0026] Furthermore, the directional adjustment mechanism may include the steering mechanism and the tilting mechanism, the steering mechanism including: a steering setting portion, which is configured to steer and rotate in the left and right directions with the steering rotation point as a reference in the internal space of the fixed shell; and a steering rotation portion, which extends from the steering setting portion along the external space serving as the outer side of the fixed shell, and the tilting mechanism may include: a one-side tilting shell cover, which is configured to cover the steering rotation portion from one side to the other side; and an other-side tilting shell cover, which is used to cover the other side of the opening of the one-side tilting shell cover.

[0027] In addition, the directional adjustment mechanism may further include: a steering friction force forming pad, which is arranged between the steering setting part and the fixed shell in the steering mechanism; and a tilting friction force forming pad, which is arranged between the one side tilting shell cover in the tilting mechanism and the steering rotating part in the steering mechanism. The inner side surface of the fixed shell, the outer side surface of the steering setting part, the inner side surface of the one side tilting shell cover in the tilting mechanism and the outer side surface of the steering rotating part, which are in contact with both sides of the steering friction force forming pad and the tilting friction force forming pad, are provided with a plurality of friction ribs which extend radially by a specified length based on the steering rotation point and the tilting rotation point.

[0028] Furthermore, a multi-strand coaxial cable for electrically connecting the wireless unit and the antenna module may be arranged in an internal space between the rear end of the steering setting portion and the front end of the steering rotating portion in a laid manner, a steering guide hole for allowing the multi-strand coaxial cable to pass through while limiting the steering angle of the steering mechanism in the left and right directions may be formed at the front end portion of the fixed shell, and a tilting guide hole for allowing the multi-strand coaxial cable to pass through while limiting the tilt angle of the tilt mechanism in the front and rear directions may be formed at the rear end portion of the one side tilting shell cover in the tilting mechanism.

[0029] Furthermore, after the steering angle of the steering mechanism is adjusted to within the range of the steering guide hole, the steering mechanism can be fixed by a steering fixing bolt fastened to the fixed housing.

[0030] Furthermore, after the tilting angle of the tilting mechanism is adjusted to be within the range of the tilting guide hole, the tilting mechanism can be fixed by a tilting fixing bolt fastened to the tilting housing cover on one side.

[0031] Effects of the Invention

[0032] According to the multifunctional connecting rod assembly for a small base station antenna device according to an embodiment of the present invention, the following various effects can be derived.

[0033] First, since the antenna module can be easily adjusted in direction even in a narrow space, it has the effect of facilitating the construction of a small cell base station.

[0034] Secondly, it is configured so that directivity can be adjusted without exposing various cables for electrically connecting the wireless unit and the antenna module to the outside, thereby having an effect of preventing the aesthetics (outer appearance) from being deteriorated.

[0035] Third, the tilt ball joint and the steering ball joint can be compactly arranged without ensuring additional installation space, and the angle can be adjusted by each ball joint, thereby having the effect of ensuring a wide range of directional adjustment angles of multiple antenna modules relative to the wireless unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a perspective view showing a state where an antenna module is arranged relative to a wireless unit by using a multifunctional link assembly for a small base station antenna device according to the first embodiment of the present invention.

[0037] Figure 2a and Figure 2b for Figure 1 A stereoscopic view of the front and rear parts of the structure excluding the wireless unit.

[0038] Figure 3a and Figure 3b for Figure 2a and Figure 2b Exploded three-dimensional diagram.

[0039] Figure 4 For along Figure 2a The cross-sectional view and the cut-away stereogram taken along the BB line.

[0040] Figure 5a and Figure 5b 1 is a perspective view showing the front and rear parts of a multifunctional link assembly for a small base station antenna device according to a second embodiment of the present invention.

[0041] Figure 6a and Figure 6b for Figure 5a and Figure 5b Exploded three-dimensional diagram.

[0042] Figure 7 For along Figure 5a Cross-sectional view and cut-away stereogram taken along line CC.

[0043] Figure 8 It is a perspective view showing a multifunctional connecting rod assembly for a small base station antenna device according to a third embodiment of the present invention.

[0044] Figure 9a and Figure 9b for Figure 8 Exploded three-dimensional diagram.

[0045] Description of Reference Numerals

[0046] A: Antenna module RRH: Radio unit

[0047] 10: Mounting bracket 12: Screw fastening slot

[0048] 13: Fixing screw 15: Heat sink

[0049] 100: First embodiment 110: Fixed housing

[0050] 110A, 110B: Housing cover 113A-h: Assembly threaded through hole

[0051] 113B-h: Assembly thread fastening hole 115: Assembly thread

[0052] 130: ball joint 131: outer support

[0053] 132: Internal joint 140: Friction stop ring

[0054] 150: Cable storage tube 160: Multi-strand coaxial cable

[0055] 180A: Antenna side fastening nut 180R: Wireless unit side fastening nut

[0056] 200: Second embodiment 300: Third embodiment DETAILED DESCRIPTION

[0057] Hereinafter, a multifunctional connecting rod assembly for a small base station antenna device according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0058] It should be noted that in the process of assigning reference numerals to the structural elements of each drawing, the same reference numerals are assigned to the same structural elements as much as possible even if they are shown in different drawings. In addition, in the process of describing the present invention, when it is determined that the detailed description of the relevant known structure or function may confuse the main purpose of the present invention, the detailed description thereof will be omitted.

[0059] In the process of describing the structural elements of the embodiments of the present invention, terms such as first, second, A, B, (a), (b) and the like may be used. These terms are only used to distinguish their structural elements from other structural elements, and the nature, order or sequence of the corresponding structural elements are not limited thereto. Furthermore, unless otherwise defined, all terms, including technical or scientific terms, have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs. Commonly used terms such as those defined in dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formalized sense unless clearly defined in the present invention.

[0060] Figure 1 This is a perspective view showing a state in which an antenna module is arranged relative to a wireless unit using a multifunctional connecting rod assembly for a small base station antenna device according to a first embodiment of the present invention. Figure 2a and Figure 2b for Figure 1 A perspective view of the front and rear parts of the structure excluding the wireless unit, Figure 3a and Figure 3b for Figure 2a and Figure 2b Exploded stereogram of Figure 4For along Figure 2a The cross-sectional view and the cut-away stereogram taken along the BB line.

[0061] The multifunctional connecting rod assembly 100-300 for the small base station antenna device of the embodiment of the present invention can play a role in mediating the physical connection between the wireless unit (radio frequency remote head (RRH, Remote Radio Head)) and at least one (plurality) antenna module A combined therewith in the structure of the small base station antenna device set at a specified place.

[0062] Furthermore, the radio unit RRH and the plurality of antenna modules A may be electrically connected via multiple coaxial cables 160, 260, 360, and the multiple coaxial cables 160, 260, 360 are concealed by the multifunctional connecting rod assembly 100-300 for the small base station antenna device according to the embodiment of the present invention.

[0063] Among them, the specified place for setting up the small base station antenna device of the present invention refers to public places, densely populated areas, large shopping malls or airport buildings, etc., to perform the function as a small cell base station. Depending on its setting type, it can be a structure suitable for setting up in a building (indoors), such as a support pole combined type, a wall combined type and a ceiling combined type.

[0064] The antenna module A may refer to an antenna module having at least one frequency band. And, the radio unit RRH may refer to a device connected to an antenna of each frequency band provided to the antenna module A and transmitting / receiving between the antenna and the base station. The radio unit RRH is a relay device that performs functions such as receiving a weakened signal and amplifying or retransmitting it, or normalizing a distorted waveform and readjusting timing between a base station and a mobile communication terminal of a mobile communication system.

[0065] like Figure 1 As shown, in the structure of the small base station antenna device, the radio unit RRH can be installed on a supporting pole, a wall, a ceiling or other structures indoors (in a house) by means of a mounting bracket 10 .

[0066] To this end, the mounting bracket 10 can be fixed to multiple positions on the left and right ends of the wireless unit RRH by fixing screws 13 through screw fastening grooves 12 formed in the screw fastening ends 11 protruding in a curved manner to the left and right front.

[0067] On the other hand, a plurality of heat sinks 15 are integrally formed on the front surface of the front housing (not shown) or the back surface of the rear housing (not shown) in the wireless unit RRH, so that the heat generated in the specified space can be dissipated to the outside through the plurality of heat sinks 15.

[0068] As described above, the multifunctional connecting rod assemblies 100 to 300 for the small base station antenna device according to the embodiments of the present invention play a role in mediating the combination of at least one antenna module A and the radio unit RRH.

[0069] That is, at least one female connector 50A, 50R may be provided at any position of the wireless unit RRH and at any position of each of the one or more antenna modules A for mediating the connection with the multifunctional link assembly 100 for the small base station antenna device according to one embodiment of the present invention.

[0070] Among them, the female connector 50R set in the wireless unit RRH can of course be set in a part removed from the multiple heat sinks 15 integrally formed on the front or back surface of the wireless unit RRH, or can be set at any position on the left and right side surfaces and the lower surface.

[0071] However, in a multifunctional connecting rod assembly 100 for a small base station antenna device according to an embodiment of the present invention, Figure 1 to Figure 2b As shown, a case where a female connector 50R is provided on the upper surface of the wireless unit RRH will be described as an example.

[0072] On the other hand, the multifunctional connecting rod assembly 100~300 for the small base station antenna device according to the embodiment of the present invention may include: a fixed shell 110, which is arranged between the wireless unit RRH and the antenna module A; and a directional adjustment mechanism 120, which is movably connected to the inner side or the outer side of the fixed shell 110, and moves around the tilt rotation point or the steering rotation point, so that the front surface of the antenna module A is fixed at a specified angle relative to the wireless unit RRH.

[0073] like Figure 3a and Figure 3b As shown, the fixed housing 110 may be formed to have an inner space opened in one side direction (eg, the front where the antenna module A is disposed) and in another side direction (eg, the rear where the radio unit RRH is disposed).

[0074] On the other hand, the directional adjustment mechanism 120 can be movably coupled to the inner space of the fixed housing 110 or the outer space corresponding to the outside thereof.

[0075] In this case, the directivity adjustment mechanism 120 can be coupled in such a manner that when the antenna module A provided at the front end portion is rotated leftward or rightward or tilted up or down relative to the fixed housing 110 , it is locked and prevented from being separated.

[0076] The antenna module A may be coupled to one side of the fixed housing 110 via the directivity adjustment mechanism 120. Also, as described below, the wireless unit RRH may be coupled to the other side of the fixed housing 110 via a cable housing tube 150 for concealing and housing a multi-strand coaxial cable 160.

[0077] The directional adjustment mechanism 120 configured as described above moves around an arbitrary tilt rotation center point (hereinafter referred to as the "tilt rotation point") and an arbitrary steering rotation center point (hereinafter referred to as the "steering rotation point") formed in the internal space of the fixed shell 110, so that the front surface of the antenna module A is fixed at a specified angle relative to the wireless unit RRH.

[0078] Among them, it can include a pair of shell covers (for example, 110A and 110B in the first embodiment, 210D and 210U in the second embodiment, 330 and 333 and 340 and 343 in the third embodiment), and the pair of shell covers are manufactured into two and combined in the form of an outer structure on the relatively outer sides of the fixed shell 110 and the directional adjustment mechanism 120 surrounding an inner structure.

[0079] Hereinafter, the multifunctional connecting rod assembly for a small base station antenna device of the present invention will be described in detail according to the sequence of embodiments.

[0080] like Figures 1 to 4 As shown, the multifunctional connecting rod assembly 100 for a small base station antenna device according to the first embodiment of the present invention includes a directivity adjustment mechanism 120 .

[0081] Among them, the directional adjustment mechanism 120 includes the above-mentioned steering mechanism and tilting mechanism, which can be integrated in the ball joint part 130, a part of which is inserted between the one side shell cover 110A and the other side shell cover 110B of the fixed shell 110 manufactured in two and rotates.

[0082] For example, Figures 1 to 4 As shown, the portion of the ball joint portion 130 corresponding to the inner joint 132 is locked at the front end portion in the internal space of the fixed shell 110, and the outer support portion 131 is configured to extend from the front end of the inner joint 132 and connected to the antenna module A to adjust the directivity of the antenna module A while rotating around a tilt rotation point or a steering rotation point formed in the internal space of the fixed shell 110.

[0083] As described above, when the ball joint portion 130 is disposed in the inner space of the fixed housing 110 , the portion corresponding to the inner joint 132 is coupled in such a manner that when the ball joint portion 130 is rotated left and right or tilted up and down, the ball joint portion 130 is locked and prevented from being disengaged.

[0084] The fixed housing 110 is bent to have a substantially “┓”-shaped internal space, and may include a one side housing cover 110A forming a right side appearance in the figure and another side housing cover 110B forming a left side appearance in the figure.

[0085] A plurality of assembly thread through holes 113A-h and assembly thread fastening holes 113B-h for passing and fastening a plurality of fixed housing assembly threads 115 are respectively formed at the edge ends of the one side housing cover 110A and the other side housing cover 110B. When the plurality of fixed housing assembly threads 115 are respectively fastened through the plurality of assembly thread through holes 113A-h and the assembly thread fastening holes 113B-h and an internal space is formed by the one side housing cover 110A and the other side housing cover 110B, a plurality of coaxial cables 160 can pass through and be laid in the internal space.

[0086] like Figure 4 As shown, the front end portion of the two ends of the multi-strand coaxial cable 160 can be provided with an antenna side male connector 170A electrically connected to the antenna side female connector 50A arranged on the back side of the antenna module A, and the rear end portion (lower end portion) of the two ends of the multi-strand coaxial cable 160 can be provided with a wireless unit side male connector 170R electrically connected to the wireless unit side female connector 50R arranged in the wireless unit RRH.

[0087] Among them, the multi-strand coaxial cable 160 is laid so that the male connector 170R on the wireless unit side is connected to the female connector 50R on the wireless unit side, while the male connector 170A on the antenna side is connected to the female connector 50A on the antenna side, and passes through the interior of the directional adjustment mechanism 120 composed of the internal space of the fixed shell 110 and the ball joint part 130, so that it can be laid in a hidden manner without being exposed to the outside at all.

[0088] On the other hand, Figures 1 to 4 As shown, in the multifunctional connecting rod assembly 100 for a small base station antenna device of the first embodiment of the present invention, one end can be connected to the wireless unit RRH so that the multi-strand coaxial cable 160 is hidden and arranged in a manner of being accommodated and penetrated, and the other end can also include a cable accommodation tube 150 connected to the fixed shell 110.

[0089] Among them, the wireless unit side male connector 170R in the multi-strand coaxial cable 160 can be fixed on the inner side of one end of the cable housing tube 150, and the antenna side male connector 170A in the multi-strand coaxial cable 160 can be fixed on the front end side of the external support part 131 in the ball joint part 130 structure.

[0090] Among them, at least one antenna module A can be turned and rotated in conjunction with the steering rotation angle of the ball joint 130 in the left and right directions relative to the fixed shell 110, and can be tilted and rotated in conjunction with the tilt rotation angle of the ball joint 130 in the front and rear directions relative to the fixed shell 110.

[0091] On the other hand, a friction stop ring (not shown) may be interposed between the one side housing cover 110A and the other side housing cover 110B in the fixed housing 110, and the friction stop ring prevents the inner joint 132 in the structure of the ball joint part 130 from detaching, and is tightly attached to a friction sealing component (not shown) formed on the outer peripheral surface of the inner joint 132 in the structure of the ball joint part 130.

[0092] When the assembly force of the fixed shell assembly thread 115 is transmitted to the one side shell cover 110A and the other side shell cover 110B, the friction stop ring is tightly attached to the friction sealing component formed on the outer peripheral surface of the inner joint 132 to form a specified friction force, thereby preventing the antenna module A from moving due to natural external forces such as wind after the directional adjustment mechanism 120 arranged on the ball joint part 130 is adjusted.

[0093] For example, the friction sealing component is a friction pad made of silicon material coated and bonded to the outer peripheral surface of the inner joint 132. When the shell cover 110A on one side and the shell cover 110B on the other side are tightly attached to each other through the assembly force generated by the fixed shell assembly thread 115, the inner surface of the friction stop ring is tightly attached to the outer peripheral surface of the friction sealing component.

[0094] The ball joint washer 185A is interposed at the front end of the outer support portion 131 in the ball joint portion 130, and it can perform a waterproof function on the antenna-side female connector 50A side when the nut is assembled by the antenna-side tightening nut 180A.

[0095] Furthermore, the tube lower gasket 185R is interposed at the lower end of the cable housing tube 150, and it can perform a waterproof function on the wireless unit side female connector 50R side when the nut is assembled by the wireless unit side tightening nut 180R. Similarly, the tube upper gasket 185B is interposed at the upper end of the cable housing tube 150, and it can perform a waterproof function on the connection part of the cable housing tube 150 fixed to the housing 110.

[0096] Figure 5a and Figure 5b The front and rear perspective views of the multifunctional connecting rod assembly for a small base station antenna device according to the second embodiment of the present invention are shown. Figure 6a and Figure 6b for Figure 5a and Figure 5b Exploded stereogram of Figure 7 For along Figure 5a Cross-sectional view and cut-away stereogram taken along line CC.

[0097] like Figures 5a to 7 As shown, the multifunctional link assembly 200 for a small base station antenna device according to the second embodiment of the present invention may include a directional adjustment mechanism 220 consisting only of a tilt mechanism 230 .

[0098] In more detail, the tilting mechanism 230 may include: an internal joint 232, a portion of which is inserted between a side shell cover 210U and an other side shell cover 210D of a fixed shell 210 manufactured in two parts and rotates; and an external support portion 231, which extends from the internal joint 232 and is connected to an antenna side female connector 50A arranged on the back side of the antenna module A.

[0099] The housing cover 210U on one side of the fixed housing 210 may be an upper housing cover relatively located at the upper part, and the housing cover 210D on the other side of the fixed housing 210 may be a lower housing cover relatively located at the lower part.

[0100] Among them, Figure 6a and Figure 6b As shown, the fixed housing 210 may function to form an internal space to accommodate the inner joint 232 in the structure of the tilting mechanism 230 .

[0101] The above-mentioned internal space is formed between the upper shell cover serving as one side shell cover 210U and the lower shell cover serving as the other side shell cover 210D, and the internal joint 132 is inserted and accommodated in the front part of the boundary where the one side shell cover 210U and the other side shell cover 210D are combined, and tilt entrances 211U-T and 211D-T that give the tilt mechanism 230 a tilt rotation range can be respectively formed.

[0102] Among them, although the multifunctional connecting rod assembly 200 for the small base station antenna device of the second embodiment of the present invention is limitedly described as a structure having only a tilting mechanism 230 as a directional adjustment mechanism 220, the second embodiment 200 can also include a cable receiving tube 250. In this case, by adjusting the fixed position of the fixed shell 210 relative to the tube connection end 218 extending from the lower side of the shell cover 210D on the other side of the fixed shell 210 connected to the cable receiving tube 250, actual functions such as the steering mechanism in the directional adjustment mechanism 220 can be realized.

[0103] In more detail, the multifunctional connecting rod assembly 200 for the small base station antenna device of the second embodiment of the present invention may also include a cable receiving tube 260, one end (upper end) of the cable receiving tube 260 is combined with a tube connection end 218 extending along the lower side of the other side shell cover 210D in the fixed shell 210, and the other end (lower end) is connected to the wireless unit side female connector 50R arranged on the wireless unit RRH, and a plurality of coaxial cables 260 are passed through and laid inside.

[0104] Among them, the tube upper gasket 285B is located between the upper end of the cable housing tube 260. When the cable housing tube 260 is fastened in a waterproof manner to the nut fastening end 218s which is provided on the outer peripheral surface of the tube connecting end 218 in the form of an external thread using the tube fastening nut 280B, by adjusting the fixed position of the fixed shell 210, the left and right rotation of the antenna module A can be actually adjusted and fixed like a steering mechanism.

[0105] For reference, a tube lower gasket 285R is interposed at the lower end of the cable housing tube 260 and can also be fastened to the female connector 50R of the wireless unit RRH in a waterproof manner using a wireless unit-side fastening nut 280R.

[0106] On the other hand, preferably, the upper and lower front ends of the inner joint 232 in the structure of the tilt mechanism 230 are formed to extend to a position exceeding 180 degrees with the arbitrary tilt rotation point located in the internal space of at least the fixed shell 210 as the center.

[0107] Among them, after the inner joint 232 is adjusted to the designed tilt rotation angle relative to the fixed shell 210 when the antenna module A is installed, it can be combined with the inner side surface of the fixed shell 210 in a contacting manner through friction that only allows rotation against the provided additional external force.

[0108] This is to perform a pre-stop function that prevents arbitrary rotation under a state including all loads of the antenna module A itself unless an operator provides additional external force when performing tilt rotation adjustment work.

[0109] To this end, although not shown in the drawings, at least one friction sealing member may be interposed between the inner joint 232 and the stationary housing 210 .

[0110] The friction seal component may include at least one waterproof seal (not shown) disposed at the inclined inlet 211U-T, 211D-T portion of the fixed housing 210 into which the inner joint 232 is inserted.

[0111] Furthermore, the multifunctional connecting rod assembly 200 for the small base station antenna device according to the second embodiment of the present invention is fixed to pass through a housing cover 210U on one side of the fixed housing 210 , and may also include at least one fixing mechanism 219 configured to interfere with the rotation path of the inner joint 232 .

[0112] The at least one fixing mechanism 219 may be a headless bolt, and the headless bolt is configured such that the outer end thereof does not protrude to the outside of a side housing cover 210U of the fixed housing 210 .

[0113] Therefore, the operator can use the internal joint 232 incorporated into the fixed shell 210 to stably adjust the directivity of the antenna module A to have a pre-stop function, and then use the fixing mechanism 219 set on the headless bolt to finally maintain the fixed state in a state where the directivity adjustment of the antenna module A is completed.

[0114] Furthermore, in the multifunctional connecting rod assembly 200 for a small base station antenna device according to the second embodiment of the present invention, Figures 5a to 7 As shown, an upper drainage portion 220U and a lower drainage portion 220D communicating with the internal space 212 and draining the internal moisture may be further provided on the upper end outer circumferential surface and the lower end outer circumferential surface of the fixed shell 210 .

[0115] In the upper drainage portion 220U and the lower drainage portion 220D, a moisture drain outlet (not shown) for actually draining moisture (water) is horizontally formed, and a shielding end (not shown) for shielding the moisture drain outlet in the vertical direction is formed, so that moisture such as rainwater is difficult to flow into the inside of the fixed shell 210 from the outside. Once the moisture flows into the inside of the fixed shell 210, it can be easily discharged through the moisture drain outlet opened in the horizontal direction.

[0116] The upper drainage portion 220U can be fixedly set in the upper drainage setting hole 220U-h of the one side shell cover 210U formed in the fixed shell 210, and the lower drainage portion 220D can be fixedly set in the lower drainage setting hole (not shown) of the other side shell cover 210D formed in the fixed shell 210.

[0117] Figure 8 1 is a perspective view showing a multifunctional connecting rod assembly for a small base station antenna device according to a third embodiment of the present invention. Figure 9a and Figure 9b for Figure 8 Exploded three-dimensional diagram.

[0118] In the multifunctional connecting rod assembly 300 for a small base station antenna device according to the third embodiment of the present invention, Figures 8 to 9b As shown, the directional adjustment mechanism 320 may include a steering mechanism 340 and a tilting mechanism 330 .

[0119] In which, the steering mechanism 340 may include: a steering setting part 340S-1, which is configured to rotate in the left and right directions based on the steering rotation point in the internal space of the fixed shell 310; and a steering rotation part 340S-2, which extends from the steering setting part 340S-1 to the external space (not shown) which is the outside of the fixed shell 310.

[0120] like Figure 9a and Figure 9bAs shown, an internal space with a roughly circular horizontal end surface is formed in the fixed shell 310, and may include: a side shell cover 311, 312, which is open downward and connected to the internal space; and an other side shell cover 313, which is used to cover the other side of the opening of the one side shell cover 311, 312.

[0121] The one side shell covers 311, 312 are combined in a manner that covers the steering setting portion 340S-1 from the upper side to the lower part, and can be assembled to each other by passing multiple cover assembly threads 319 through and fastening the through holes 348B and fastening holes 348A formed along the edge portions of the one side shell covers 311, 312 and the other side shell cover 313.

[0122] Among them, Figure 9a and Figure 9b As shown, one side housing cover 311, 312 may include: a fixed housing body 311 having an internal space with a circular horizontal end surface; and a tube coupling end 312, which is integrally formed to extend to the rear of the fixed housing body 311 and is coupled to a cable receiving tube not shown.

[0123] A steering guide hole 317 may be provided at the front end portion of the fixed shell body 311 , and the steering guide hole 317 is cut so that the steering rotating portion 340S- 2 in the steering mechanism 340 can extend and protrude forward.

[0124] On the other hand, the steering setting part 340S-1 in the steering mechanism 340 is a thin cylindrical shape having a center point in the left-right horizontal direction (hereinafter referred to as the "steering rotation point"), and the steering rotating part 340S-2 in the steering mechanism 340 is a thin cylindrical shape having a center point in the up-down direction (hereinafter referred to as the "tilt rotation point"). The steering setting part 340S-1 and the steering rotating part 340S-2 can be formed to be integrally connected in the front-to-back direction.

[0125] Among them, the rear end of the steering setting part 340S-1 and the front end of the steering rotation part 340S-2 are arranged to be connected to each other through the internal space. Through the connected internal space, a multi-strand coaxial cable 360 ​​for electrically connecting the wireless unit RRH and the antenna module A can be arranged in a layable manner.

[0126] In this case, the multi-strand coaxial cable 360 ​​is laid through the tube connection portion 312 in the fixed shell 310, and can be laid in a front-to-back hidden manner through the rear cable setting hole 343S-1 cut at the rear end of the steering setting portion 340S-1 and the front cable setting hole 343S-2 cut at the front end of the steering rotation portion 340S-2.

[0127] On the other hand, a turning guide hole 347 may be formed at the front end portion 310S of the fixed housing body 311 in the fixed housing 310 . The turning guide hole 347 is used to allow the multi-strand coaxial cable 360 ​​to pass therethrough and to limit the turning angle of the turning mechanism 340 in the left-right direction.

[0128] Likewise, the tilt mechanism 330 can be combined with the steering rotation unit 340S-2 in a manner of tilting and rotating in the up-down direction with the tilt rotation point as a reference.

[0129] In more detail, Figure 9a and Figure 9b As shown, the tilting mechanism 330 may include: a tilting shell cover 331, 332 on one side, which is configured to cover the steering rotating part 340S-2 in the steering mechanism 340 from one side (from the left side in the figure) to the other side (to the right side in the figure); and a tilting shell cover 333 on the other side, which is used to cover the other side of the opening of the tilting shell cover 331, 332 on one side.

[0130] Among them, the tilting shell cover 331, 332 on one side of the tilting mechanism 330 is formed with an internal space having a roughly circular vertical end face, and can be formed to be open to the other side so that the internal space is connected, and the tilting shell cover 333 on the other side can be combined in a manner of covering the other side of the opening of the tilting shell cover 331, 332 on one side.

[0131] The one-side inclined shell covers 331, 332 are combined in a manner to cover the steering rotating part 340S-2 of the steering mechanism 340 from one side to the other side, and can be assembled with each other by allowing multiple cover assembly threads 339 to pass through the through hole 338B formed along the edge of the one-side inclined shell covers 331, 332 and the other-side inclined shell cover 333 and be fastened to the fastening hole 338A.

[0132] The tilting housing cover 331 , 332 on one side of the tilting mechanism 330 may include: a cover portion 331 ; and an outer support portion 332 extending forward from the cover portion 331 and connected to the back side of the antenna module A.

[0133] On the other hand, a tilt guide hole 337 may be provided at the rear end of one side tilt housing cover 331 , 332 in the tilt mechanism 330 . The tilt guide hole 337 is used to pass the multi-strand coaxial cable 360 ​​and limit the tilt angle of the tilt mechanism 330 in the up-down direction.

[0134] One end of the multi-strand coaxial cable 360 ​​laid through the internal space of the steering mechanism 340 can be connected to the antenna module A in a state hidden from the outside through the outer support portion 332 in the structure of the inclined shell cover 331, 332 on one side and the inclined guide hole 337 in the inclined shell cover 331, 332 on one side, and the other end can be connected to the wireless unit RRH in a state hidden from the outside through the steering guide hole 317 formed in the fixed shell 310 and the tube connection portion 312 in the structure of the fixed shell body 311, 312.

[0135] On the other hand, the tilting mechanism 330 is coupled to the outer side of the steering and rotating part 340S-2 in a manner of being surrounded by a tilting shell cover 331, 332 on one side and a tilting shell cover 333 on the other side, which are respectively divided into two parts. The antenna module A can be adjusted to tilt and rotate while being rotated in the upward and downward directions with the tilting rotation point located in the internal space of the steering and rotating part 340S-2 within the range of the above-mentioned tilting guide hole 337 as the center.

[0136] In addition, the steering mechanism 340 is coupled to the outer side of the steering setting portion 340S-1 in a manner of being surrounded by the fixed shell body 311, 312 of the fixed shell 310 which is divided into two and the other side shell cover 343. It can rotate in the left and right directions with the steering rotation point located in the internal space of the fixed shell 310 within the range of the above-mentioned steering guide hole 317 as the center, and the antenna module A can be adjusted to a steering rotation.

[0137] On the other hand, Figure 9a and Figure 9b As shown, the multifunctional connecting rod assembly 300 for a small base station antenna device of the third embodiment of the present invention may also include: a steering friction force forming pad 350S, which is arranged between the steering setting part 340S-1 in the steering mechanism 340 and the inner side surface of the fixed shell 310; and a tilting friction force forming pad 350T, which is arranged between the inner side surface of the tilting shell cover 331, 332 on one side of the tilting mechanism 330 and the outer side surface of the steering rotating part 340S-2 in the steering mechanism 340.

[0138] Among them, in the structure of the steering mechanism 340 facing the steering friction force forming pad 350S, the outer side surface of the steering setting part 340S-1, and the inner side surfaces of the fixed shell body 311, 312 and the tilting friction force forming pad 340T in the structure of the fixed shell 310, a plurality of friction ribs 336 can be protrudingly formed on the outer side surface of the steering rotation part 340S-2 and the inner side surface of the tilting shell cover 331, 332 on one side of the tilting mechanism 330, and the plurality of friction ribs 336 extend radially to a specified length based on the steering rotation point and the tilting rotation point, respectively.

[0139] Among them, after the steering angle of the steering mechanism 340 is adjusted within the range of the steering guide hole 313S, it can be fixed by the steering fixing bolt 340S-B fastened to the fixed shell body 311, 312 constituting the fixed shell 310.

[0140] In more detail, in the fixed shell body 311, 312, the steering fixing bolt 340S-B passes through the fixed shell through hole 345 and is fastened to the shell fastening hole 315S-B formed at the center of the upper surface of the steering setting part 340S-1 to increase the friction between the steering friction force forming pad 350S and multiple friction ribs (not shown), thereby preventing steering rotation due to any external force (such as strong wind, etc.) rather than the operator's operating force.

[0141] Furthermore, after the tilting angle of the tilting mechanism 330 is adjusted within the range of the tilting guide hole 313T, the tilting mechanism 330 can be fixed by the tilting fixing bolt 330T-B fastened to the tilting housing cover 331 , 332 on one side of the tilting mechanism 330 .

[0142] In more detail, in the tilting shell cover 331, 332 on one side of the tilting mechanism 330, the tilting fixing bolt 330T-B passes through the cover through hole 335 and is fastened to the cover fastening hole (not shown) formed at the center of the left side surface of the steering rotating part 340S-2 to increase the friction force between the tilting friction force forming pad 350T and the multiple friction ribs 336, thereby preventing tilting rotation due to any external force (such as strong wind, etc.) rather than the operator's operating force.

[0143] As described above, the multifunctional connecting rod assembly 100~300 for the small base station antenna device of the embodiment of the present invention is configured to be manufactured into two and combined in the form of an outer structure on the relatively outer side of the fixed shell 110~310 and the directional adjustment mechanism 120~320 surrounding the inner structure, thereby providing advantages that can be realized in various embodiments.

[0144] In particular, the following advantages are provided: not only can the internal space of the fixed housing 110-310 be hidden so that the multiple coaxial cables 160-360 are not exposed to the outside, but also the multiple antenna modules A can be arranged to perform various direction adjustments relative to the wireless unit RRH.

[0145] The unexplained figure marks "213D-h" and "213U-h" are assembly threaded through holes for threadedly fastening the one side shell cover 210U and the other side shell cover 210D, "219ha" is a fixing mechanism setting hole for inserting the fixing mechanism 219, and "280A", "380A" and "380R" are one of the antenna side fastening nuts and the wireless unit side fastening nuts.

[0146] The small base station antenna devices 100 to 300 of the embodiments of the present invention are described in detail with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above embodiments. Of course, ordinary technicians in the technical field to which the present invention belongs can make various modifications and implementations within the scope of equivalents. Therefore, the true scope of the rights of the present invention will be determined by the claims described below.

[0147] Industrial Applicability

[0148] The invention provides a multifunctional connecting rod assembly for a small base station antenna device, which can be used to easily construct a small cellular base station in public places, densely populated areas, large shopping malls or airport buildings.

Claims

1. A multifunctional connecting rod assembly for a small base station antenna device, characterized in that: include: A fixed housing having an inner space opened in one direction and in another direction; and The directional adjustment mechanism is movably connected to the internal space of the fixed housing or the external space corresponding to the outside thereof. The directivity adjustment mechanism is coupled in such a manner that when the antenna module provided at the front end portion relative to the fixed housing is rotated leftward or rightward or rotated up or down, the directivity adjustment mechanism is locked and prevented from being disengaged.

2. The multifunctional connecting rod assembly for a small base station antenna device according to claim 1, characterized in that: The antenna module is coupled to the one side of the fixed housing through the directivity adjustment mechanism. The wireless unit is coupled to the other side of the fixed housing through a cable housing tube for concealing and housing multiple coaxial cables.

3. The multifunctional connecting rod assembly for a small base station antenna device according to claim 2, characterized in that: A pair of housing covers are included. The housing covers are manufactured in two pieces and combined in a form in which the outer structures disposed on the relatively outer sides of the fixed housing and the directional adjustment mechanism surround the inner structures.

4. The multifunctional connecting rod assembly for a small base station antenna device according to claim 3, characterized in that: The directional adjustment mechanism moves around an arbitrary tilt rotation center point and an arbitrary steering rotation center point formed in the internal space of the fixed shell, so that the front surface of the antenna module is fixed at a specified angle relative to the wireless unit. Hereinafter, the arbitrary tilt rotation center point will be referred to as the "tilt rotation point", and the arbitrary steering rotation center point will be referred to as the "steering rotation point".

5. The multifunctional connecting rod assembly for a small base station antenna device according to claim 4, characterized in that: The directional adjustment mechanism includes at least one of a steering mechanism and a tilting mechanism. The steering mechanism is configured to rotate in a left-right direction with the steering rotation point provided in the vertical direction through the fixed housing as the center, while adjusting the steering rotation of the antenna module; The tilt mechanism adjusts the tilt rotation of the antenna module while tilting and rotating in the front-rear direction around the tilt rotation point provided in the left-right direction by the fixed housing.

6. The multifunctional connecting rod assembly for a small base station antenna device according to claim 5, characterized in that: The directional adjustment mechanism includes the steering mechanism and the tilting mechanism. The steering mechanism and the tilting mechanism are integrated in a ball joint portion, and a portion of the ball joint portion is inserted between a housing cover on one side and a housing cover on the other side of the fixed housing manufactured in two pieces and rotates.

7. The multifunctional connecting rod assembly for a small base station antenna device according to claim 6, characterized in that: A friction stop ring is interposed between the one housing cover and the other housing cover, and the friction stop ring prevents the ball joint portion from being separated and is in close contact with a friction seal member formed on an outer peripheral surface of the ball joint portion.

8. The multifunctional connecting rod assembly for a small base station antenna device according to claim 5, characterized in that: The directional adjustment mechanism includes the tilt mechanism, The tilt mechanism includes an inner joint, a part of which is inserted between one side housing cover and the other side housing cover of the fixed housing manufactured in two pieces and rotates.

9. The multifunctional connecting rod assembly for a small base station antenna device according to claim 8, characterized in that: The housing cover on one side of the fixed housing is an upper housing cover located relatively at the upper part, The housing cover on the other side of the fixed housing is a lower housing cover located relatively at the lower part.

10. The multifunctional connecting rod assembly for a small base station antenna device according to claim 8, characterized in that: One end of the cable housing tube is orthogonally connected to the rear end of the fixed housing, and the other end of the cable housing tube is connected to the wireless unit. In the fixed housing, a front end portion is connected to the fixed housing so as to be rotatable in left and right directions with the center of the cable housing tube as a reference.

11. The multifunctional connecting rod assembly for a small base station antenna device according to claim 5, characterized in that: The directional adjustment mechanism includes the steering mechanism and the tilting mechanism. The steering mechanism includes: a steering setting portion, which is configured to be steered and rotated in the left and right directions with the steering rotation point as a reference in the internal space of the fixed housing; and a steering rotation portion, which extends from the steering setting portion along the external space as the outside of the fixed housing, The tilt mechanism includes: a one-side tilt housing cover configured to cover the steering rotating part from one side to the other side; and an other-side tilt housing cover for shielding the other side of the opening of the one-side tilt housing cover.

12. The multifunctional connecting rod assembly for a small base station antenna device according to claim 11, characterized in that: The directional adjustment mechanism also includes: a steering friction force forming pad disposed between the steering setting portion and the fixed housing in the steering mechanism; and A tilt friction force forming pad is provided between the one side tilt housing cover in the tilt mechanism and the steering rotating part in the steering mechanism, A plurality of friction ribs are protrudingly formed on the inner side surface of the fixed shell that contacts both sides of the steering friction force forming pad and the tilting friction force forming pad, the outer side surface of the steering setting part, the inner side surface of the one side tilting shell cover in the tilting mechanism, and the outer side surface of the steering rotating part, and the plurality of friction ribs extend radially to a specified length based on the steering rotation point and the tilting rotation point.

13. The multifunctional connecting rod assembly for a small base station antenna device according to claim 11, characterized in that: A multi-strand coaxial cable for electrically connecting the wireless unit and the antenna module is arranged in an internal space between the rear end of the steering setting part and the front end of the steering rotating part in a laying manner. A steering guide hole is formed at the front end of the fixed housing for allowing the multi-strand coaxial cable to pass through and for limiting the steering angle of the steering mechanism in the left-right direction. A tilt guide hole for allowing the multi-strand coaxial cable to pass therethrough and for limiting the tilt angle of the tilt mechanism in the front-rear direction is formed at a rear end portion of the one side tilt housing cover in the tilt mechanism.

14. The multifunctional connecting rod assembly for a small base station antenna device according to claim 13, characterized in that: After the steering angle of the steering mechanism is adjusted to within the range of the steering guide hole, the steering mechanism is fixed by a steering fixing bolt fastened to the fixed housing.

15. The multifunctional connecting rod assembly for a small base station antenna device according to claim 13, characterized in that: After the tilting angle of the tilting mechanism is adjusted to within the range of the tilting guide hole, the tilting mechanism is fixed by a tilting fixing bolt fastened to the tilting housing cover on one side.

Images