Clamping device for support pole of 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 4G communication systems, efforts have been made to develop improved 5G communication systems or pre-5G communication systems. For this reason, 5G communication systems or pre-5G communication systems are referred to as "communication systems after 4G network (Beyond 4G Network) or systems after LTE system (Post LTE)". To achieve high data transmission rates, the realization of 5G communication systems in the millimeter wave (mmWave) band (such as the 60 gigahertz (60 GHz) band) is being considered. In order to mitigate the path loss of radio waves and increase the transmission distance of radio waves in the mmWave band, in 5G communication systems, 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 that will require much higher capacities than current ones, a variety of technologies can be applied to improve frequency efficiency. The service coverage area of ​​a base station is called a cell, and generally, a base station with high transmission power and wide coverage is called a macro cell, while a small base station with low transmission power and narrow coverage is called a small cell.

[0004] Such base stations, like macrocells or small cells, are generally manufactured with at least one antenna module and one radio unit (RU) (hereinafter referred to as "radio unit (RU)") physically separated from each other. The antenna module and radio unit (RU) are then connected by cables and mounted simultaneously on a single support pole.

[0005] Here, at least one antenna device is a format for constructing a frequency band corresponding to a base station, implemented on an antenna board included in each antenna device, and can be employed in two dual-band configurations to cover the frequency bands corresponding to the DoD (Departure of Defense) and CBRS (Citizens Broadband Radio Services).

[0006] At this time, each antenna device is connected to a support pole to form a different antenna beamforming pattern to match the characteristics of the base station, and then requires predetermined directional adjustment. However, conventionally, when directional adjustment is performed together with the radio unit (RU), not only is additional space required for directional adjustment, but the cables connecting the radio unit and the antenna device are exposed to the outside, resulting in a decrease in aesthetic appeal. [Overview of the project] [Problems that the invention aims to solve]

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

[0008] In addition, another objective of the present invention is to provide a clamping device for a support pole of a wireless unit that facilitates the directional adjustment of multiple antenna devices of a base station.

[0009] Furthermore, another objective of the present invention is to provide a clamping device for a support pole of a wireless unit that can prevent a deterioration in the external appearance of the support pole by minimizing the exposure of the cable electrically connecting the wireless unit and the antenna equipment.

[0010] The technical problems of the present invention are not limited to those 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 problem]

[0011] A clamping device for a support pole of a wireless unit according to one embodiment of the present invention includes a pole-side clamp fixed to a support pole and having a locking hole formed in a recess from the top surface downward, and a wireless unit-side clamp whose front end is fixed to a wireless unit (RU) and whose rear end has a locking pad formed thereon which is inserted from top to bottom into the locking hole of the pole-side clamp and then fixed, wherein the thickness of the locking pad in the front-rear direction may be formed inclined such that the front-rear width gradually narrows towards the direction of gravity.

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

[0013] Furthermore, the pole-side clamps may be provided in pairs on the support pole via hose band clamps, spaced apart vertically.

[0014] Furthermore, the rear ends of the pair of pole-side clamps may have band fixing holes through which the hose band clamp is inserted horizontally.

[0015] Furthermore, gear panel assemblies, each having at least two gear teeth formed on the outer surface of the support pole, can be connected to the upper and lower rear ends of the pair of pole-side clamps, respectively.

[0016] Furthermore, the gear panel assembly may include at least one clamping gear panel having at least two gear teeth formed thereon, with the two or more gear teeth exposed on the support pole side, and gear fixing panels for fixing the clamping gear panel to the upper and lower ends of the pole-side clamp.

[0017] Furthermore, the clamping gear panel may be provided in clamping gear panel mounting grooves formed recessed on the upper and lower sides of the rear end of the pole-side clamp, and the gear fixing panel may be provided in fixing panel mounting grooves formed recessed on the upper and lower sides of the rear end of the pole-side clamp, including the clamping gear panel mounting grooves.

[0018] Furthermore, the clamping gear panel is rotatably mounted horizontally in the clamping gear panel mounting groove, and the gear panel assembly may further include a gear adjustment pin that penetrates the clamping gear panel and is fixed in the clamping gear panel mounting groove to restrict the rotation of the clamping gear panel.

[0019] Furthermore, the clamping gear panel has pin slots formed in an arc shape with the same radius through which the gear adjustment pins pass, and the position of the gear teeth can be adjusted within the length range of the pin slots.

[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, which 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 the 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 the beamforming performance.

[0026] Third, since it restricts the external exposure of the cable connecting the wireless unit and the plurality of antenna devices, it can prevent the deterioration of the appearance beauty around the support pole.

Brief Description of the Drawings

[0027] [Figure 1A] It is a perspective view showing a state of installation of a wireless unit (RU) on a support pole using the clamping device for the support pole of a wireless unit according to an embodiment of the present invention. [Figure 1B] It is a perspective view showing the state of installation of a radio unit (RU) on a support pole using a clamping device for the support pole of the radio unit according to an embodiment of the present invention. [Figure 2A] It is an exploded perspective view of FIG. 1A. [Figure 2B] It is an exploded perspective view of FIG. 1B. [Figure 3] It is a front view (a) and a side view (b) of FIG. 1A. [Figure 4] Among the configurations of FIG. 1A, it is an exploded perspective view showing the radio unit. [Figure 5] It is a partially cut-away perspective view along the E-E line of FIG. 3. [Figure 6] It is a cross-sectional view along the F-F line of FIG. 3. [Figure 7] Among the configurations of FIG. 1A, it is a perspective view showing the state of an antenna device connected to the radio unit via a multi-function link and a partial exploded perspective view thereof. [Figure 8] It is an exploded perspective view showing the state of installation of a radio unit using a clamping device for the support pole of the radio unit according to an embodiment of the present invention. [Figure 9] It is an exploded perspective view showing the state of installation of a radio unit using a clamping device for the support pole of the radio unit according to an embodiment of the present invention. [Figure 10] It is a perspective view showing a clamping device for the support pole of a radio unit according to an embodiment of the present invention. [Figure 11] It is a detailed exploded perspective view of FIG. 10. [Figure 12] It is a detailed exploded perspective view of FIG. 10. [Figure 13] It is a partial cross-sectional view showing the state of attachment of a clamping device for the support pole of a radio unit according to an embodiment of the present invention to the support pole. [Figure 14] It is a perspective view of FIG. 13. [Figure 15] It is a perspective view showing the installation process of a radio unit on a support pole according to an embodiment of the present invention. [Modes for carrying out the invention]

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

[0029] When assigning reference numerals to the components in each drawing, it should be noted that, as far as possible, identical components should have the same reference numeral even if they are shown in other drawings. Furthermore, when describing embodiments of the present invention, if it is determined that a specific description of such known configurations or functions would hinder understanding of the embodiments of the present invention, such detailed description will be omitted.

[0030] In describing the components of the embodiments of the present invention, terms such as First, Second, A, B, (a), (b), etc., may be used. Such terms are merely for distinguishing a component from other components, and do not limit the nature, order, or procedure of that component. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the art to which the present invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not in an ideal or overly formal sense unless explicitly defined in this application.

[0031] Figures 1A and 1B are perspective views showing the installation of a wireless unit on a support pole using a clamping device for a support pole according to one embodiment of the present invention; Figures 2A and 2B are exploded perspective views of Figures 1A and 1B; Figure 3 is a front view (a) and a side view (b) of Figure 1A; Figure 4 is an exploded perspective view showing the wireless unit in the configuration of Figure 1A; Figure 5 is a partial cross-sectional perspective view along the EE line of Figure 3; and Figure 6 is a cross-sectional view along the FF line of Figure 3.

[0032] A clamping device 100 for a support pole of a wireless unit according to one embodiment of the present invention plays a role in mediating the installation of a base station on a support pole P, as shown in Figures 1A to 6.

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

[0034] For example, each of the two antenna devices A1 and A2 may be equipped with multiple radiating element modules (not shown), where each set of radiating element modules is in a format for constructing a frequency band corresponding to a small cell base station. Antenna device A1 may be equipped with multiple radiating element modules to cover the frequency band corresponding to the DoD (Departure of Defense), while antenna device A2 may be equipped with multiple radiating element modules to cover the frequency band corresponding to CBRS (Citizens Broadband Radio Services).

[0035] When the two antenna devices A1 and A2 are mounted on the radio unit (RU), optimal beamforming can be achieved by adjusting their directionality using the multifunction link 50, described later, in the direction of the strongest coverage requirement.

[0036] However, it is not necessarily required that each antenna device A1 and A2 have radiating element modules of the same frequency band. Although not shown in the diagram, multiple antenna subarrays with multiple radiating elements can be arranged on the upper front of a macro antenna board (not shown) located inside one antenna device A1 or A2 to realize a DoD channel in the 3450-3550 MHz frequency band of the dual frequency band, achieving a gain of 17.5 dBi. Multiple antenna subarrays with multiple radiating elements can also be arranged on the lower front of the macro antenna board to realize a CBRS channel in the 3550-3700 MHz frequency band of the dual frequency band, achieving a gain of 15.5 dBi.

[0037] Thus, when the radiating element modules are arranged so that a single antenna device A1 or A2 covers the entire dual-band frequency range, the UL (Up Link) Coverage can be maximized by separating the TRx and antenna subarrays for each band, even if the directionality of the antenna device A1 or A2 is adjusted to be the same.

[0038] Here, the wireless unit (RU) may also be provided in a substantially rectangular parallelepiped shape, as shown in Figures 4 to 6, and may include a housing body 205 having an internal space with the remaining parts excluding the top and bottom surfaces being open. The first band RF section 210A and the second band RF section 210B may be provided separately within the internal space of the housing body 205.

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

[0040] More specifically, the first band RF section 210A may include a CBRS filter 220A built into the left side of the internal space of the housing body 205, and a CBRS PAU 240A stacked on the outside of the CBRS filter 220A with a clamshell panel 230A in between.

[0041] Furthermore, the second band RF section 210B may include a DoD filter 220B built into the right side of the internal space of the housing body 205, and a DoD PAU 240B stacked on the outside of the DoD filter 220B with a clamshell panel 230B in between.

[0042] The front and rear portions of the internal space of the housing body 205 may each contain a DTA board 240C and a PSA board 240D, which are both involved with the first band RF section 210A and the second band RF section 210B, respectively.

[0043] In addition, the wireless unit (RU) may further include a right PAU housing cover 250A, a left PAU housing cover 250B, a front DTA housing cover 250C, and a rear PSA housing cover 250D, which are provided to shield each of the four open sides of the housing body 205.

[0044] For reference, the clamping device 100 for the support pole of a wireless unit according to one embodiment of the present invention, described later, can be coupled to the rear PSA housing cover 250D of the wireless unit (RU).

[0045] On the other hand, in the configuration of the first band RF section 210A, the CBRS PAU 240A and in the configuration of the second band RF section 210B, the DoD PAU 240B, the DTA board 240C, and the PSA board 240D all function as a kind of main board. Since heating elements (not shown) are mounted on each of their outer surfaces, the right PAU housing cover 250A, the left PAU housing cover 250B, the front DTA housing cover 250C, and the rear PSA housing cover 250D can dissipate the heat generated from the heating elements mounted on their respective outer surfaces through each surface of the housing body 205.

[0046] Therefore, the right PAU housing cover 250A, the left 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 each has multiple heat sink fins 251 integrally formed on its outer surface, so that the heat generated in the CBRS PAU 240A, DoD PAU 240B, DTA board 240C, and PSA board 240D can be dissipated in all directions except the top and bottom.

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

[0048] Furthermore, an external mounting member 400 for connecting an external cable to a wireless 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 concealed inside the support pole P, and then connected to the external mounting member 400 via a cable attachment (not shown) formed on the support pole P in a location close to the external mounting member 400, with minimal external exposure.

[0049] Therefore, according to the clamping device 100 for a support pole of a wireless unit according to one embodiment of the present invention, the external cable connecting the support pole P and the wireless unit (RU) is connected in a state in which external exposure is minimized as described above, while the wireless unit (RU) and antenna equipment A1 and A2 are each connected by multiple cables 60 that are not exposed to the outside via the cable housing pipe 57 of the multifunction link 50 described later, thus preventing a deterioration in appearance.

[0050] Figure 7 is a perspective view and a partially exploded perspective view showing the antenna equipment connected to the wireless unit via a multifunction link, as shown in the configuration of Figure 1A.

[0051] Two or more antenna devices A1, A2 can each be electrically connected to the radio unit (RU) via a multifunction link 50, as shown in Figure 7.

[0052] As shown in Figure 7, the multifunction link 50 connects the wireless unit-side female connector 90RU and the antenna-side female connector 90AT, while simultaneously allowing adjustment (directional adjustment) of the position of each antenna device A1 and A2 facing the front, thereby enabling efficient operation and preventing interference with surrounding antenna devices.

[0053] More specifically, the multifunction link 50 may include fixing parts 51A and 51B that are fixed to the wireless unit side female connector 90RU via a cable housing pipe 57, and a ball joint part 53 whose one end is jointly movable to the fixing parts 51A and 51B and whose other end is connected to the antenna side female connector 90AT.

[0054] Multiple cables 60 connecting the wireless unit (RU) and antenna equipment A1 and A2 are routed to pass through the cable housing pipe 57, fixing parts 51A and 51B, and ball joint parts 53, concealing them from the outside. Male connectors (not shown) are provided at each end of the cables 60, and they may be electrically connected to the wireless unit side female connector 90RU and the antenna side female connector 90AT, respectively.

[0055] In addition, retainer nuts 59 and 55 are provided at the ends of the cable housing pipe 57 and the ball joint portion 53, respectively. The retainer nut 59, fitted to the end of the cable housing pipe 57, is fastened to a male thread (not shown in the drawing) formed on the outer surface of the wireless unit side female connector 90RU, and the retainer nut 55, fitted to the end of the ball joint portion 53, is fastened to a male thread (not shown in the drawing) formed on the outer surface of the antenna side female connector 90AT. This ensures that the electrical connection force is maintained after each terminal pin (not shown) of the male connector (not shown) is connected to the wireless unit side female connector 90RU and the antenna side female connector 90AT.

[0056] Thus, the multifunction link 50 provides significant advantages for base station construction because it allows two antenna devices A1 and A2, which are provided in a dual-band configuration to cover at least two or more frequency bands for a radio unit (RU), to be electrically connected without the cable 60 being exposed externally, while also allowing directional adjustment via the ball joint 53 to the appropriate direction for beamforming.

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

[0058] Figures 8 and 9 are exploded perspective views showing the installation of a wireless unit using a clamping device for a support pole according to one embodiment of the present invention; Figure 10 is a perspective view showing the clamping device for a support pole according to one 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 attachment of the clamping device for a support pole according to one embodiment of the present invention to a 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 one embodiment of the invention, as shown in Figures 8 to 14, may include an upper clamp 100A located relatively above the support pole P and a lower clamp 100B located relatively below it. Here, the concept of "relatively above" or "relatively below" is not based on the vertical position of the support pole P, but merely defines the vertical position between the upper clamp 100A and the lower clamp 100B, and this should not limit the scope of the present invention.

[0060] Since the upper clamp 100A and the lower clamp 100B all have the same configuration, for the sake of clarity, only the configuration of one of the upper clamp 100A or the lower clamp 100B will be described in detail, and the descriptions of the remaining configurations will be omitted or replaced.

[0061] A clamping device 100 for a support pole of a wireless unit according to one embodiment of the present invention includes a pole-side clamp 110 fixed to a support pole P, having a locking hole 111 formed in a recess from the top surface downwards, and a wireless unit-side clamp 120 whose front end is fixed to a wireless unit (RU), and whose rear end has a locking pad 121 that is inserted from top to bottom into the locking hole 111 of the pole-side clamp 110 and then fixed.

[0062] Here, it is preferable that the locking hole 111 and the locking pad 121 are formed inclined such that their front-to-back width gradually narrows as they move in the direction of gravity.

[0063] On the other hand, the pole-side clamps 110 may be provided in pairs on the support pole P via hose band clamps 10A and 10B, spaced apart vertically.

[0064] Once the pole-side clamp 110 is attached to the support pole P, it does not need to be separated unless macroscopic directional adjustment of the antenna equipment A1 and A2 is required, making it easier to attach it using a simple method with hose band clamps 10A and 10B.

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

[0066] In addition, a gear panel assembly (not shown in the drawing reference numeral) having at least two or more gear teeth formed on the outer surface of the support pole P can be connected to the upper and lower rear ends of the pair of pole-side clamps 110, respectively.

[0067] More specifically, the gear panel assembly may include, as shown in Figures 8 to 12, at least one clamping gear panel 116 having at least two gear teeth formed thereon, with at least two gear teeth exposed on the support pole P side, and gear fixing panels 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 the clamping gear panel mounting groove 113-2 which is recessed on 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 the fixing panel mounting groove 113-1 which is recessed on the upper and lower sides of the rear end of the pole-side clamp 110, including the clamping gear panel mounting groove 113-2.

[0069] As shown in Figure 12, the clamping gear panel mounting grooves 113-2 are formed in pairs on the left and right sides, respectively, above and below the rear end of the pole-side clamp 110, spaced a predetermined distance apart. A pair of clamping gear panels 116 may also be provided and mounted in each of the clamping gear panel mounting grooves 113-2.

[0070] Once the two clamping gear panels 116 are installed 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 able to rotate horizontally around any pivot point within the clamping gear panel mounting groove 113-2. In this way, as the clamping gear panel 116 rotates, at least two or more gear teeth exposed behind the pole-side clamp 110 rotate in a circular trajectory, allowing the position of the gear teeth to be adjusted to accommodate 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 passes through the clamping gear panel 116 and is fixed in the clamping gear panel mounting groove 113-2 to restrict the rotation of the clamping gear panel 116.

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

[0074] Alternatively, the gear fixing panel 115 may be placed on the fixing panel mounting groove 113-1 so as to cover the clamping gear panel 116, while 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 other hand, a clamping device 100 for a support pole of a wireless unit according to one embodiment of the present invention may further include a clamping bolt 130 that penetrates the locking pad 121 from the upper surface of the locking pad 121 of the wireless unit side clamp 120 and bolts to the inside of the pole side clamp 110 corresponding to the lower part of the locking hole 111 of the pole side clamp 110.

[0076] The lower end of the outer surface of the clamping bolt 130 may have a male thread 131 formed thereon, and the inside of the pole-side clamp 110 may be provided with a bolting fastening boss 112 with a female thread (not shown) formed thereon so that the clamping bolt 130 is bolted together.

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

[0078] Here, the outer surface of the locking pad 121 and the inner surface of the locking hole 111 are arranged to form inclined surfaces that gradually narrow in width as they go downward (in the direction of gravity). Therefore, when the bolting force of the clamping bolt 130 is transmitted, the outer surface of the locking pad 121 can be tightly fitted together with the inclined surface, which is the inner surface of the locking hole 111, so as to match the shape of the inclined surface.

[0079] It is preferable that the inclined surface of such a locking pad 121 is not a perfectly straight shape, but is formed to have a parabolic curved surface.

[0080] As described above, when the locking pad 121 has a curved and inclined surface in the front-rear direction, it is possible to secure a minimum contact surface on the inner surface of the locking hole 111. This has the advantage of preventing the wireless unit side clamp 120 from shifting due to external forces such as strong winds, which can occur due to gaps caused by assembly tolerances when the locking pad 121 is formed to have the same thickness throughout in the front-rear direction.

[0081] Figure 15 is a perspective view showing the installation process of a wireless unit according to one embodiment of the present invention on a support pole.

[0082] The following briefly describes the process of installing a wireless unit (RU) on a support pole P using a clamping device 100 for a support pole of a wireless unit according to one embodiment of the present invention, which has the above configuration.

[0083] First, as shown in Figure 15(a), the upper clamp 100A and lower clamp 100B are attached to the support pole P, and the hose band clamps 10A and 10B are fixed by passing them 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 to correspond to the vertical separation distance between the upper and lower wireless unit side clamps 120 fixed to the wireless unit (RU) to which it is attached.

[0085] The wireless unit clamp 120 can then be fixed in place by fastening the fixing bolt 127 through the bolt through hole 125 formed in the wireless unit clamp 120 to the bolt fastening hole RU-25 formed on the rear surface of the wireless unit (RU).

[0086] In this state, as shown in Figure 15(b), the wireless unit (RU) is moved towards the support pole P, and as shown in Figure 15(c), the locking hole 111 of the pole-side clamp 110 is positioned directly below the locking pad 121 of the wireless unit-side clamp 120. Then, the locking pad 121 is moved downward and inserted into the locking hole 111 to temporarily fix it in place.

[0087] In this way, since the relatively heavy wireless unit (RU) can be easily temporarily fixed to the pole-side clamp 110 by on-site workers, it is possible to provide the advantage of ensuring the safety of on-site workers.

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

[0089] At this time, the bolting force of the clamping bolt 130 is transmitted to the pole-side clamp 110 and the wireless unit-side clamp 120, and the locking pad 121 and the locking hole 111 are fitted together in an interlocking manner, making it possible to achieve a strong connection.

[0090] Here, the locking pad 121 has an inclined surface that is sloped such that its thickness in the front-to-back direction gradually decreases as it approaches the direction of gravity. Therefore, when aligning the locking pad 121 with the locking hole 111 in a tight-fitting configuration, it is possible to secure a minimum contact surface, thereby preventing flow phenomena caused by external forces (for example, strong winds).

[0091] According to the clamping device 100 for a support pole of a wireless unit according to one embodiment of the present invention, which has the configuration described above, workers can easily attach and detach the wireless unit (RU) to the desired position on the support pole P on site using hose band clamps 10A and 10B. Furthermore, it has the advantage of preventing a deterioration in the aesthetic appearance of the location where the wireless unit (RU) is installed by minimizing the external exposure of connecting cables between the wireless unit (RU) and multiple antenna devices A1 and A2.

[0092] A clamping device for a support pole of a wireless unit according to one embodiment of the present invention has been described in detail above with reference to the attached drawings. However, the embodiments of the present invention are not necessarily limited to those described above, and it goes without saying that various modifications and equivalent implementations are possible by persons with ordinary skill in the art to which the present invention pertains. Therefore, the true scope of the rights of the present invention is defined by the claims described later. [Industrial applicability]

[0093] The present invention provides a clamping device for a support pole for a wireless unit that allows for easy attachment and detachment of the wireless unit to the support pole, easy adjustment of the directionality of multiple antenna devices of a base station, and prevents deterioration of the external appearance of the support pole by minimizing the exposure of cables electrically connecting the wireless unit and antenna devices. [Explanation of Symbols]

[0094] RU: Wireless Unit, A1, A2: Antenna Equipment 10A, 10B: Hose band clamp, 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 that is fixed to the support pole and has a locking hole formed by a recess extending downward from the top surface, The clamp includes a wireless unit side clamp, the front end of which is fixed to the wireless unit (RU), and the rear end of which has a locking pad formed in a downwardly convex shape, which is inserted from top to bottom into the locking hole of the pole side clamp and then fixed, The thickness of the locking pad in the front-to-back direction is formed in a slope such that the front-to-back width gradually narrows as it approaches the direction of gravity. A clamping device for a support pole of a wireless unit, wherein the front and rear outer surfaces of the locking pad are formed to have a parabolic curved shape.

2. The clamping device for a support pole of a wireless unit according to claim 1, wherein a pair of pole-side clamps are provided on the support pole via hose band clamps, spaced vertically apart.

3. The clamping device for a support pole of a wireless unit according to claim 2, wherein a band fixing hole is formed at the rear end of the pole-side clamp, through which the hose band clamp is inserted horizontally.

4. Clamping device for a support pole of a wireless unit according to claim 2, wherein gear panel assemblies, each having at least two or more gear teeth formed on the outer surface of the support pole, are coupled to the upper and lower sides of the rear end of the pole-side clamp.

5. The gear panel assembly is At least one clamping gear panel having at least two gear teeth formed thereon, and the two or more gear teeth being exposed to the support pole side, Clamping device for a support pole of a wireless unit according to claim 4, further comprising a gear fixing panel for fixing the clamping gear panel to the upper and lower ends of the pole-side clamp.

6. The clamping gear panel is provided in the clamping gear panel mounting grooves which are recessed on the upper and lower sides of the rear end of the pole-side clamp. The clamping device for a support pole of a wireless unit according to claim 5, wherein the gear fixing panel is provided in a fixing panel mounting groove formed recessed on the upper and lower sides of the rear end of the pole-side clamp, so as to include the clamping gear panel mounting groove.

7. The clamping gear panel is mounted in the clamping gear panel mounting groove so as to be rotatable in the horizontal direction. Clamping device for a support pole of a wireless unit according to claim 6, further comprising: a gear adjustment pin that penetrates the clamping gear panel and is fixed in a clamping gear panel mounting groove so as to restrict the rotation of the clamping gear panel.

8. The clamping gear panel has pin slots formed in an arc shape with the same radius through which the gear adjustment pins pass. The clamping device for a support pole of a wireless unit according to claim 7, wherein the position of the gear teeth is adjusted within the length range of the pin slot.

9. The clamping device for a support pole of a wireless unit according to claim 6, wherein the gear fixing panel is screw-fixed to the fixing panel mounting groove so as to cover the clamping gear panel when the clamping gear panel is fixed to the clamping gear panel mounting groove.

10. The clamping device for a support pole of a wireless unit according to claim 1, further comprising a clamping bolt that penetrates the locking pad from the upper surface of the locking pad of the wireless unit side clamp and bolts to the inside of the pole side clamp corresponding to the lower part of the locking hole of the pole side clamp.

11. The clamping device for a support pole of a wireless unit according to claim 10, wherein the front and rear outer surfaces of the locking pad are fitted together with the front and rear inner surfaces of the locking hole when the bolting force of the clamping bolt is transmitted.

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