Clamping Device for the Support Pole of a Wireless Unit

Abstract

Provided is a clamping device for a pole of a radio unit, which enables easy installation of the radio unit on a support pole and easy adjustment of the directivity of each antenna device. 【Solution means】The clamping device for a pole of a radio unit includes a pole-side clamp fixed to the support pole and having a locking hole formed by being recessed downward from the upper surface, and a radio unit-side clamp having a front end fixed to the radio unit (RU) and a locking pad formed at the rear end and fixed after being inserted into the locking hole of the pole-side clamp from above to below. The locking hole and the locking pad are formed to be inclined such that the front-rear width gradually decreases in the direction of gravity.

Description

Technical Field

[0001] The present invention relates to a clamping apparatus for a support pole of a radio unit (CLAMPING APPARATUS FOR SUPPORT POLE OF RADIO UNIT), and more particularly, to a clamping apparatus for a support pole of a radio unit that can easily attach and detach the radio unit to and from support poles of various sizes.

Background Art

[0002] In order to meet the increasing demand for wireless data traffic since the commercialization of the 4G communication system, efforts have been made to develop an improved 5G communication system or a pre-5G communication system. For this reason, the 5G communication system or the pre-5G communication system is called a "communication system after the 4G network (Beyond 4G Network) or a system after the LTE system (Post LTE)". In order to achieve a high data transmission rate, the 5G communication system is considered to be realized in the millimeter wave (mmWave) band (for example, such as the 60 giga (60 GHz) band). In order to mitigate the path loss of radio waves and increase the transmission distance of radio waves in the millimeter wave band, in the 5G communication system, beamforming, massive multiple input multiple output (massive MIMO), full dimensional multiple input multiple output (Full Dimensional MIMO: FD-MIMO), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

[0003] In particular, in future 5G cellular networks where a much higher capacity than the current capacity is required, various technologies for improving frequency efficiency can be applied. The service area of a base station is called a cell. Generally, a base station with high transmission power and wide coverage is called a macro cell, and a small base station with low transmission power and narrow coverage is called a small cell.

[0004] Such base stations, such as macro cells or small cells, are generally manufactured with at least one antenna module and a radio unit (hereinafter referred to as "radio unit (RU)") physically separated from each other, and after connecting each antenna module and radio unit (RU) with a cable, they are generally mounted on one support pole at the same time.

[0005] Here, at least one antenna module is a format for constructing a frequency band corresponding to the base station, which is realized by an antenna board included in each antenna module, and can be adopted in two dual-band forms for covering frequency bands corresponding to DoD (Department of Defense) and CBRS (Citizens Broadband Radio Services).

[0006] At this time, each antenna module is coupled to a support pole to form different antenna beamformings according to the characteristics of the base station, and then a predetermined directivity adjustment is required. Conventionally, when performing directivity adjustment together with the radio unit (RU), not only is more space required for directivity adjustment, but also there is a problem that the cable connecting the radio unit and the antenna module is exposed to the outside, deteriorating the aesthetics. Summary of the Invention Problems to be Solved by the Invention

[0007] The present invention has been made to solve the above technical problems, and an object thereof is to provide a clamping device for a pole of a wireless unit that enables easy attachment and detachment of the wireless unit to and from a support pole.

[0008] At the same time, another object of the present invention is to provide a clamping device for a pole of a wireless unit that enables easy adjustment of the directivity of a plurality of antenna devices of a base station.

[0009] Furthermore, another object of the present invention is to provide a clamping device for a pole of a wireless unit that can prevent the appearance beauty on the outside of the support pole from deteriorating by suppressing the exposure of a cable that electrically connects between the wireless unit and the antenna device.

[0010] The technical problems of the present invention are not limited to the problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Means for Solving the Problems

[0011] A clamping device for a pole of a wireless unit according to an embodiment of the present invention includes a pole-side clamp fixed to the support pole and having a locking hole formed by being recessed downward from the upper surface, and a front end portion fixed to the wireless unit (RU), and a locking pad formed at the rear end portion and fixed after being inserted into the locking hole of the pole-side clamp from above to below. The thickness of the locking pad in the front-rear direction may be formed to be inclined so that the front-rear width gradually becomes narrower in the direction of gravity.

[0012] Here, the locking hole may be formed to have an inner surface with a planar shape, and the locking pad may be formed to have a parabolic curved surface.

[0013] Further, the pole-side clamp may be provided with a pair vertically spaced apart from the support pole via a hose band clamp.

[0014] Further, a band fixing hole through which the hose band clamp is inserted and penetrated in the horizontal direction may be formed at the rear end portion of the pair of pole side clamps.

[0015] Also, on the upper side and the lower side of the rear end portion of the pair of pole side clamps, a gear panel assembly having at least two or more gear teeth clamped to the outer peripheral surface of the support pole can be coupled respectively.

[0016] Also, the gear panel assembly may include at least one or more clamping gear panels formed with the at least two or more gear teeth and provided such that the two or more gear teeth are exposed to the support pole side, and a gear fixing panel for fixing the clamping gear panel to the upper end portion and the lower end portion of the pole side clamp.

[0017] Also, the clamping gear panel may be provided in a clamping gear panel mounting groove formed to be recessed on the upper side and the lower side of the rear end portion of the pole side clamp, and the gear fixing panel may be provided in a fixing panel mounting groove formed to be recessed on the upper side and the lower side of the rear end portion of the pole side clamp so as to include the clamping gear panel mounting groove.

[0018] Also, the clamping gear panel may be provided to be rotatable in the horizontal direction in the clamping gear panel mounting groove, and the gear panel assembly may further include a gear adjustment pin fixed to the clamping gear panel mounting groove through the clamping gear panel so as to limit the rotation of the clamping gear panel.

[0019] Also, a pin slot through which the gear adjustment pin penetrates is formed in an arc shape such that the pin slot has the same radius in the clamping gear panel, and the position of the gear teeth can be adjusted within the length range of the pin slot.

[0020] Further, the gear fixing panel may be screwed and fixed to the fixing panel mounting groove so as to cover the clamping gear panel in a state where the clamping gear panel is fixed to the clamping gear panel mounting groove.

[0021] Furthermore, a clamping bolt may be further included that penetrates the locking pad from the upper surface of the locking pad of the wireless unit side clamp and is bolted and fastened to the inside of the pole side clamp corresponding to the lower part of the locking hole of the pole side clamp.

[0022] Also, the outer surface of the locking pad can be press-fitted so as to be matched with the inclined surface of the locking hole when the bolting fastening force of the clamping bolt is transmitted.

Advantages of the Invention

[0023] According to the clamping device for a support pole of a wireless unit according to an embodiment of the present invention, the following various effects can be achieved.

[0024] First, it has the effect that the wireless unit can be easily attached and detached at a desired height of the support pole via the hose band clamp.

[0025] Second, since it is possible to install a plurality of antenna devices that can cover a dual-band frequency band for the wireless unit, it has the effect of improving beamforming performance.

[0026] Third, since the external exposure of the cable connecting the wireless unit and the plurality of antenna devices is suppressed, it is possible to prevent the deterioration of the external appearance around the support pole.

Brief Description of the Drawings

[0027]

Figure 1A

Figure 1B

Figure 2A

Figure 2B

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Best Mode for Carrying Out the Invention

[0028] Hereinafter, a clamping device for a support pole of a wireless unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0029] When attaching reference numerals to the components in each drawing, it should be noted that for the same components, as far as possible, they have the same reference numerals even if they are shown on other drawings. Further, when explaining the embodiments of the present invention, if it is determined that a specific explanation of such a known configuration or function hinders the understanding of the embodiments of the present invention, the detailed explanation thereof will be omitted.

[0030] When explaining the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. can be used. Such terms are merely for distinguishing the components from other components, and the essence, order, or procedure of the components are not limited by such terms. Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those having ordinary knowledge in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or overly formal sense unless clearly defined in the present application.

[0031] FIGS. 1A and 1B are perspective views showing the state of installation of a wireless unit on a support pole of a wireless unit using a clamping device for a support pole of a wireless unit according to an embodiment of the present invention. FIGS. 2A and 2B are exploded perspective views of FIGS. 1A and 1B. FIG. 3 is a front view (a) and a side view (b) of FIG. 1A. FIG. 4 is an exploded perspective view showing the wireless unit among the configurations of FIG. 1A. FIG. 5 is a partially cut-away perspective view taken along line E-E of FIG. 3. FIG. 6 is a cross-sectional view taken along line F-F of FIG. 3.

[0032] The clamping device 100 for the support pole of the radio unit according to an embodiment of the present invention serves to mediate the installation of the base station with respect to the support pole P, as shown in FIGS. 1A to 6.

[0033] Generally, the base station can include a radio unit (RU; Radio Unit) (hereinafter referred to as "radio unit (RU)") and two (A1, A2) or more antenna devices A controlled by the radio unit (RU) and covering at least respective dual-band frequency bands.

[0034] If a plurality of radiation element modules (not shown) are arranged in each of the two antenna devices A1 and A2, each of the plurality of radiation element modules is a format for constructing a frequency band corresponding to a small cell base station. A plurality of radiation element modules for covering a frequency band corresponding to DoD (Depart of Defense) are arranged in one antenna device A1, and a plurality of radiation element modules for covering a frequency band corresponding to CBRS (Citizens Broadband Radio Services) may be arranged in the other antenna device A2.

[0035] When the two thus provided antenna devices A1 and A2 are each mounted on the radio unit (RU), optimal beamforming can be realized by adjusting the directivity in the direction where the coverage requirement value is strong using the multi-function link 50 described later.

[0036] However, it is not always necessary to arrange the radiating element modules in the same frequency band for each of the antenna devices A1 and A2. Although not shown in the drawings, on the upper front side of a macro antenna board (not shown) provided inside one of the antenna devices A1 or A2, a plurality of antenna sub-arrays formed by a plurality of radiating elements can be arranged to realize a DoD channel in the frequency band of 3450 - 3550 MHz among the dual frequency bands and achieve a gain of 17.5 dBi. On the lower front side of the macro antenna board, a plurality of antenna sub-arrays formed by a plurality of radiating elements can be arranged to realize a CBRS channel in the frequency band of 3550 - 3700 MHz among the dual frequency bands and achieve a gain of 15.5 dBi.

[0037] In this way, when the radiating element modules are arranged such that one antenna device A1 or A2 covers all of the dual-band frequency bands, even when the directivity of the antenna device A1 or A2 is adjusted identically, it is possible to maximize the UL (Up Link) Coverage by separating the TRx and antenna sub-arrays for each band.

[0038] Here, as shown in FIGS. 4 to 6, the radio unit (RU) also includes a housing body 205 having a substantially rectangular parallelepiped shape and an internal space with openings in the remaining portions except for the upper and lower surfaces. The first band RF unit 210A and the second band RF unit 210B may be provided separately in the internal space of the housing body 205.

[0039] The first band RF unit 210A can be defined as being related to the CBRS channel among the above-described two frequency bands, and the second band RF unit 210B can be defined as being related to the DoD channel among the above-described two frequency bands.

[0040] More specifically, the first-band RF unit 210A can include a CBRS filter 220A built into the left side of the internal space of the housing body 205, and a CBRS PAU 240A laminated with a clam shell panel 230A interposed outside the CBRS filter 220A.

[0041] Also, the second-band RF unit 210B can include a DoD filter 220B built into the right side of the internal space of the housing body 205, and a DoD PAU 240B laminated with a clam shell panel 230B interposed outside the DoD filter 220B.

[0042] In the front and rear portions of the internal space of the housing body 205, a DTA board 240C and a PSA board 240D that are commonly involved with the first-band RF unit 210A and the second-band RF unit 210B may be respectively arranged.

[0043] At the same time, the radio unit (RU) can further include a right-side PAU housing cover 250A, a left-side PAU housing cover 250B, a front DTA housing cover 250C, and a rear PSA housing cover 250D provided to shield the four open sides of the housing body 205.

[0044] For reference, the strut pole clamping device 100 for a radio unit according to an embodiment of the present invention, which will be described later, can be coupled to the rear PSA housing cover 250D among the components of the radio unit (RU).

[0045] On one hand, among the components of the first-band RF unit 210A, and among the components of the CBRS PAU 240A in the configuration of the first-band RF unit 210A and the second-band RF unit 210B, the DoD PAU 240B, the DTA board 240C, and the PSA board 240D play the role of a kind of main board. Since heat-generating elements (not shown) are mounted on each outer surface, the right-side PAU housing cover 250A, the left-side PAU housing cover 250B, the front DTA housing cover 250C, and the rear PSA housing cover 250D can play the role of dissipating the heat generated from the heat-generating elements mounted on their respective outer surfaces through each surface of the housing body 205.

[0046] Therefore, the right-side PAU housing cover 250A, the left-side PAU housing cover 250B, the front DTA housing cover 250C, and the rear PSA housing cover 250D are preferably made of a metal material with excellent thermal conductivity, and a plurality of heat sink fins 251 are integrally formed on each outer surface, so that the heat generated by the CBRS PAU 240A, the DoD PAU 240B, the DTA board 240C, and the PSA board 240D can be dissipated in all directions except the upper and lower parts.

[0047] Also, two or more antenna devices A1, A2 (to be described later) may be coupled to the upper surface of the housing body 205, and a CCTV (C) for real-time shooting of the lower periphery may be provided on the lower surface of the housing body 205.

[0048] And, an external mounting member 400 for external cable connection with a radio unit (RU) may be provided on the lower surface of the housing body 205. Although not shown in the drawings, the external cable is routed through the inside of the support pole P in a concealed manner and then can be connected to the external mounting member 400 with minimal external exposure through a cable fixture (not shown) formed on the support pole P at a location close to the external mounting member 400.

[0049] Therefore, according to the clamping device 100 for the support pole of the wireless unit according to an embodiment of the present invention, the external cable connecting the support pole P and the wireless unit (RU) is connected in a state where external exposure is minimized as described above. On the other hand, each of the wireless unit (RU) and the antenna devices A1 and A2 has a plurality of cables 60 arranged in a state where they are not externally exposed through the cable accommodation pipe 57 of the multifunction link 50 described later. Therefore, it is possible to prevent the appearance beauty from deteriorating.

[0050] FIG. 7 is a perspective view and a partial exploded perspective view showing a state of an antenna device connected to a wireless unit via a multifunction link among the configurations of FIG. 1A.

[0051] As shown in FIG. 7, two or more antenna devices A1 and A2 can be electrically connected to the wireless unit (RU) via the multifunction link 50, respectively.

[0052] As shown in FIG. 7, the multifunction link 50 can connect the female connector 90RU on the wireless unit side and the female connector 90AT on the antenna side, and at the same time, can adjust (direction adjustment) the position facing the front surfaces of the respective antenna devices A1 and A2, so as to play a role of being efficient and not being interfered with by surrounding antenna devices.

[0053] More specifically, the multifunction link 50 can include fixing parts 51A and 51B fixed to the female connector 90RU on the wireless unit side via the cable accommodation pipe 57, and a ball joint part 53 whose one end is connected to the fixing parts 51A and 51B in a joint moving manner and whose other end is connected to the female connector 90AT on the antenna side.

[0054] A plurality of cables 60 that respectively connect a radio unit (RU) and antenna devices A1 and A2 are disposed so as to be concealed from the outside by passing through the inside of a cable accommodation pipe 57, fixing portions 51A and 51B, and a ball joint portion 53. Male connectors (not shown) may be provided at each end of the cable 60 and electrically connected and coupled to a female connector 90RU on the radio unit side and a female connector 90AT on the antenna side, respectively.

[0055] At the same time, retainer nuts 59 and 55 are provided at the end of the cable accommodation pipe 57 and the end of the ball joint portion 53, respectively. The retainer nut 59 provided in a state of fitting to the end of the cable accommodation pipe 57 is fastened to a male thread (not shown in the drawing reference) formed on the outer peripheral surface of the female connector 90RU on the radio unit side, and the retainer nut 55 provided in a state of fitting to the end of the ball joint portion 53 is fastened to a male thread (not shown in the drawing reference) formed on the outer peripheral surface of the female connector 90AT on the antenna side, thereby enabling the maintenance of electrical connection force after each terminal pin (not shown) of the male connector (not shown) is connected to the female connector 90RU on the radio unit side and the female connector 90AT on the antenna side.

[0056] In this way, the multi-function link 50 enables two antenna devices A1 and A2 provided in a dual-band form to be capable of covering at least two or more frequency bands with respect to the radio unit (RU) and to be electrically connected without the appearance of the cable 60 being exposed. At the same time, since the directivity can be adjusted via the ball joint portion 53 in an appropriate direction for beamforming, it provides a very great advantage for the construction of the base station.

[0057] On the other hand, a radio unit (RU) to which two or more antenna devices A1 and A2 can be coupled can be detachably attached to a support pole P via a clamping device 100 for a support pole of a radio unit according to an embodiment of the present invention, as shown in FIGS. 1A to 3.

[0058] Figures 8 and 9 are exploded perspective views showing the installation state of a wireless unit using a clamping device for a support pole of a wireless unit according to an embodiment of the present invention, Figure 10 is a perspective view showing a clamping device for a support pole of a wireless unit according to an embodiment of the present invention, Figures 11 and 12 are detailed exploded perspective views of Figure 10, Figure 13 is a partial cross-sectional view showing the mounting state of a clamping device for a support pole of a wireless unit according to an embodiment of the present invention with respect to the support pole, and Figure 14 is a perspective view of Figure 13.

[0059] A clamping device 100 for a support pole of a wireless unit according to an embodiment of the present invention can include an upper clamp 100A positioned relatively upper and a lower clamp 100B positioned relatively lower with respect to the support pole P, as shown in Figures 8 to 14. Here, the concept of being relatively upper or relatively lower is not based on the up and down of the support pole P, but is merely for defining the up and down positions between the upper clamp 100A and the lower clamp 100B, and the scope of the rights of the present invention should not be limited thereby.

[0060] Hereinafter, since the upper clamp 100A and the lower clamp 100B all have the same configuration, for the convenience of explanation, only the configuration of one of the upper clamp 100A and the lower clamp 100B will be described in detail, and the description of the remaining configurations will be omitted or substituted.

[0061] A clamping device 100 for a support pole of a wireless unit according to an embodiment of the present invention includes a pole-side clamp 110 fixed to the support pole P and having a locking hole 111 formed by being recessed downward from the upper surface, and a wireless unit-side clamp 120 having a front end fixed to the wireless unit (RU) and a locking pad 121 formed at the rear end to be fixed after being inserted into the locking hole 111 of the pole-side clamp 110 from the upper part to the lower part.

[0062] Here, it is preferable that the locking hole 111 and the locking pad 121 are formed to be inclined so that the front-rear width gradually becomes narrower as going in the gravity direction.

[0063] On the other hand, a pair of pole-side clamps 110 may be provided at upper and lower positions on the support pole P via hose band clamps 10A and 10B with a space therebetween.

[0064] Once the pole-side clamps 110 are provided on the support pole P, it is not necessary to separate them unless macro-direction adjustment of the antenna devices A1 and A2 is required. Therefore, it is easier to mount them in a simple manner using the hose band clamps 10A and 10B.

[0065] Band fixing holes 117 through which the hose band clamps 10A and 10B are horizontally inserted and penetrated may be formed at the rear ends of the pair of pole-side clamps 110. More specifically, the band fixing holes 117 may be formed to penetrate from the left or right side of the rear end of the pole-side clamp 110 to the opposite direction.

[0066] At the same time, gear panel assemblies (not shown in the drawing reference numerals) each having at least two or more gear teeth formed on the outer peripheral surface of the support pole P clamped thereto may be coupled to the upper and lower sides of the rear ends of the pair of pole-side clamps 110, respectively.

[0067] More specifically, as shown in FIGS. 8 to 12, the gear panel assembly may include at least one clamping gear panel 116 having at least two or more gear teeth formed thereon and provided such that two or more gear teeth are exposed on the support pole P side, and a gear fixing panel 115 for fixing the clamping gear panel 116 to the upper and lower ends of the pole-side clamp 110.

[0068] The clamping gear panel 116 is provided in clamping gear panel mounting grooves 113-2 recessed in the upper and lower sides of the rear end of the pole-side clamp 110, and the gear fixing panel 115 may be provided in fixing panel mounting grooves 113-1 recessed in the upper and lower sides of the rear end of the pole-side clamp 110 so as to include the clamping gear panel mounting grooves 113-2.

[0069] As shown in Fig. 12, the clamping gear panel mounting grooves 113-2 are formed with two each on the left and right sides of the upper and lower sides of the rear end of the pole side clamp 110 at a predetermined distance apart, and a pair of clamping gear panels 116 may also be provided and provided in the respective clamping gear panel mounting grooves 113-2.

[0070] Once the two clamping gear panels 116 are provided in the clamping gear panel mounting grooves 113-2, the single gear fixing panel 115 can be placed and fixed in the fixing panel mounting groove 113-1, and the two clamping gear panels 116 can be fixed simultaneously.

[0071] Here, the clamping gear panel 116 may be provided so as to be horizontally rotatable about an arbitrary rotation point inside the clamping gear panel mounting groove 113-2. In this way, when the clamping gear panel 116 rotates, at least two or more gear teeth exposed behind the pole side clamp 110 rotate in a circular locus, so that the position of the gear teeth can be adjusted corresponding to various outer diameters of the support pole P.

[0072] On the other hand, the gear panel assembly may further include a gear adjustment pin 118 that is fixed to the clamping gear panel mounting groove 113-2 through the clamping gear panel 116 so as to limit the rotation of the clamping gear panel 116.

[0073] Here, the clamping gear panel 116 is formed in an arc shape such that the pin slot 119 through which the gear adjustment pin 118 passes has the same radius, and the position of the gear teeth can be adjusted within the length range of the pin slot 119.

[0074] On the other hand, the gear fixing panel 115 may be placed in the fixing panel mounting groove 113-1 so as to cover the clamping gear panel 116 in a state where the clamping gear panel 116 is fixed to the clamping gear panel mounting groove 113-2, and then fixed by a plurality of screws 114.

[0075] On the one hand, the clamping device 100 for the support pole of the wireless unit according to an embodiment of the present invention may further include a clamping bolt 130 that is bolted and fastened inside the pole-side clamp 110 corresponding to the lower part of the locking hole 111 of the pole-side clamp 110 through the locking pad 121 from the upper surface of the locking pad 121 of the wireless unit-side clamp 120.

[0076] A male thread 131 may be formed at the lower end of the outer peripheral surface of the clamping bolt 130, and a bolting fastening boss 112 may be provided inside the pole-side clamp 110 with an internal thread (not shown) formed so that the clamping bolt 130 is bolted and coupled.

[0077] Since the clamping bolt 130 penetrates the locking pad 121 and is exposed downward, a through portion 121-1 that is relatively thicker and curved than other parts may be formed on the locking pad 121. Needless to say, a bolt through hole 121-2 is formed inside the through portion 121-1.

[0078] Here, since the outer surface of the locking pad 121 and the inner surface of the locking hole 111 are provided with inclined surfaces that incline so that the width gradually narrows downward (in the direction of gravity), when the bolting fastening force of the clamping bolt 130 is transmitted, the outer surface of the locking pad 121 can be interference-fitted so as to be matched with the inclined surface that is the inner surface of the locking hole 111.

[0079] Such an inclined surface of the locking pad 121 is preferably inclined to have a parabolic curved surface rather than a completely straight shape.

[0080] As described above, when the front-back thickness of the locking pad 121 has a curved and inclined surface, a minimum bonding surface can be ensured on the inner surface of the locking hole 111. In this regard, there is a difference in effect in that the flow phenomenon of the wireless unit side clamp 120 caused by an external force such as strong wind can be prevented in advance compared to the case where the locking pad 121 is formed with the same thickness in the front-back direction due to the gap caused by the assembly tolerance.

[0081] FIG. 15 is a perspective view showing the installation process of a wireless unit according to an embodiment of the present invention with respect to a support pole.

[0082] Hereinafter, the process of installing a wireless unit (RU) on a support pole P using the clamping device 100 for a support pole of a wireless unit according to an embodiment of the present invention having the above configuration will be briefly described.

[0083] First, as shown in FIG. 15(a), an upper clamp 100A and a lower clamp 100B are provided on the support pole P with hose band clamps 10A and 10B, and are fixed through the band fixing holes 117 of the pole side clamp 110.

[0084] At this time, the vertical separation distance between the upper clamp 100A and the lower clamp 100B must be adjusted corresponding to the vertical separation distance of the upper and lower wireless unit side clamps 120 fixed to the wireless unit (RU) to be mounted thereon.

[0085] Then, the wireless unit side clamp 120 can be fixed by passing a fixing bolt 127 through the bolt through hole 125 formed in the wireless unit side clamp 120 and fastening it to the bolt fastening hole RU-25 formed on the rear surface of the wireless unit (RU).

[0086] In this state, as shown in Fig. 15(b), the radio unit (RU) is moved to the side of the support pole P, and as shown in Fig. 15(c), after the locking hole 111 of the pole side clamp 110 is positioned directly below the locking pad 121 of the radio unit side clamp 120, the locking pad 121 is moved downward and temporarily fixed by the operation of inserting and placing it in the locking hole 111.

[0087] In this way, since it is possible for the on-site operator to easily temporarily fix the relatively heavy radio unit (RU) to the pole side clamp 110, it is possible to provide the advantage of ensuring the safety of the on-site operator.

[0088] Then, the clamping bolt 130 is fastened downward through the bolt fastening hole 123 formed on the upper surface of the radio unit side clamp 120, and bolted and joined so that the male thread 131 is fastened to the bolting fastening boss 112 of the pole side clamp 110.

[0089] At this time, while the bolting fastening force of the clamping bolt 130 is transmitted to the pole side clamp 110 and the radio unit side clamp 120, it is possible to perform a strong connection by fitting the locking pad 121 and the locking hole 111 in an interference fit form.

[0090] Here, since the locking pad 121 has an inclined surface in an inclined form such that the thickness in the front-rear direction gradually decreases as it goes in the direction of gravity, it is possible to secure a minimum joint surface when fitting the locking pad 121 to the locking hole 111 in an interference fit form, so that a flow phenomenon caused by an external force (such as strong wind) can be prevented.

[0091] According to the clamping device 100 for the support pole of the wireless unit according to an embodiment of the present invention having such a configuration, not only can an operator easily attach and detach the wireless unit (RU) to a desired position of the support pole P on-site using the hose band clamps 10A and 10B, but also it is possible to have the advantage of preventing the appearance beauty of the place where the wireless unit (RU) is provided from deteriorating in terms of minimizing the external exposure of the connection cable between the wireless unit (RU) and the plurality of antenna devices A1 and A2.

[0092] As described above, the clamping device for the support pole of the wireless unit according to an embodiment of the present invention has been described in detail with reference to the attached drawings. However, it goes without saying that the embodiments of the present invention are not necessarily limited to the above-described embodiments, and various modifications and implementations within an equivalent range can be made by those having ordinary knowledge in the technical field to which the present invention pertains. Therefore, the true scope of the rights of the present invention is defined by the scope of the claims described later.

Industrial Applicability

[0093] The present invention provides a clamping device for a support pole of a wireless unit that is easy to attach and detach the wireless unit to and from the support pole, easy to adjust the directivity of a plurality of antenna devices of a base station, and can prevent the appearance beauty outside the support pole from deteriorating by minimizing the exposure of the cable that electrically connects the wireless unit and the antenna devices.

Explanation of Reference Numerals

[0094] RU: Wireless unit, A1, A2: Antenna devices 10A, 10B: Hose band clamps, 100: Clamping device 110: Pole side clamp, 111: Locking hole 112: Bolting fastening boss, 113-1: Fixed panel mounting groove 113-2: Clamping gear panel mounting groove, 114: Screw 115: Gear fixing panel, 116: Clamping gear panel 117: Band fixing hole, 118: Adjustment pin 119: Pin slot, 120: Wireless unit side clamp 121: Locking pad, 123: Bolt fastening hole 125: Bolt through hole, 127: Fixing bolt 130: Clamping bolt, 131: Male thread

Claims

1. A pole-side clamp fixed to a support pole, having a locking hole formed by being recessed downward from the upper surface; and A wireless unit-side clamp having a front end fixed to a radio unit (RU) and a locking pad formed at a rear end thereof to be fixed after being inserted into the locking hole of the pole-side clamp from above to below, and A clamping device for a support pole of a wireless unit, wherein the front-rear thickness of the locking pad is formed to be inclined such that the front-rear width gradually narrows in the direction of gravity.

2. The locking hole is formed to have an inner surface with a planar shape, and The locking pad is formed to have a parabolic curved surface, the clamping device for a support pole of a wireless unit according to claim 1.

3. The pole-side clamp is provided with a pair spaced vertically apart from the support pole via a hose band clamp, the clamping device for a support pole of a wireless unit according to claim 1.

4. A band fixing hole through which the hose band clamp is inserted and penetrated in the horizontal direction is formed at a rear end of the pair of pole-side clamps, the clamping device for a support pole of a wireless unit according to claim 3.

5. At least two or more gear teeth for clamping the outer peripheral surface of the support pole are respectively coupled to the upper side and the lower side of the rear end of the pair of pole-side clamps, the clamping device for a support pole of a wireless unit according to claim 3.

6. The gear panel assembly At least one or more clamping gear panels having at least two or more gear teeth formed thereon and provided such that the two or more gear teeth are exposed to the support pole side; and A gear fixing panel for fixing the clamping gear panel to the upper end portion and the lower end portion of the pole-side clamp, the clamping device for a support pole of a wireless unit according to claim 5.

7. The clamping gear panel is provided in a clamping gear panel mounting groove formed by being recessed on the upper side and the lower side of the rear end of the pole-side clamp, and The gear fixing panel is provided in a fixing panel mounting groove formed by being recessed on the upper side and the lower side of the rear end of the pole-side clamp so as to include the clamping gear panel mounting groove, the clamping device for a support pole of a wireless unit according to claim 6.

8. The clamping gear panel is rotatably provided in the horizontal direction in the clamping gear panel mounting groove. The gear panel assembly further includes a gear adjustment pin that passes through the clamping gear panel and is fixed to the clamping gear panel mounting groove so as to limit the rotation of the clamping gear panel. The clamping device for the support pole of the wireless unit according to claim 7.

9. In the clamping gear panel, a pin slot through which the gear adjustment pin passes is formed in an arc shape so as to have the same radius. The clamping device for the support pole of the wireless unit according to claim 8, wherein the position of the gear teeth is adjusted within the length range of the pin slot.

10. The gear fixing panel is screw-fixed to the fixing panel mounting groove so as to cover the clamping gear panel in a state where the clamping gear panel is fixed to the clamping gear panel mounting groove. The clamping device for the support pole of the wireless unit according to claim 7.

11. The clamping device for the support pole of the wireless unit according to claim 1, further including a clamping bolt that is bolted and fastened to the inside of the pole-side clamp corresponding to the lower part of the locking hole of the pole-side clamp through the locking pad from the upper surface of the locking pad of the wireless unit-side clamp.

12. The outer surface of the locking pad is press-fitted so as to be matched with the inclined surface of the locking hole when the bolting fastening force of the clamping bolt is transmitted. The clamping device for the support pole of the wireless unit according to claim 11.

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