Clamping device for holding pole of wireless unit

Abstract

The present invention relates to a clamp device for a derrick of a wireless unit, and more particularly, to a clamp device for a derrick of a wireless unit, comprising: a rod-side clamp fixed to a derrick and having a clamping hole formed therein, the clamping hole being recessed from an upper surface to a lower surface; and a radio unit-side jig, the front end portion of which is fixed to a radio unit (RU) and the rear end portion of which is formed with a clip pad that is inserted from the upper portion to the lower portion of the clip hole of the lever-side jig and then is fixed. The clamping hole and the clamping pad are formed in an inclined mode, so that the front-back width is gradually reduced in the gravity direction. Further, a wireless unit can be easily mounted on the derrick, and the direction of each antenna device can be easily adjusted.

Description

Technical Field

[0001] The present invention relates to a clamping device for a pole of a wireless unit, and more particularly to a clamping device for a pole that can easily detach and assemble a wireless unit to poles of various sizes. Background Art

[0002] In order to meet the demand for wireless data communication volume, which is on an increasing trend after the commercialization of 4G communication systems, improved 5G communication systems or pre-5G communication systems are being actively studied and developed. For this reason, 5G communication systems or pre-5G communication systems are called "super 4g network communication systems or post-long term evolution (Post LTE) systems". In order to achieve high data transmission rates, 5G communication systems are being considered to be implemented in ultra-high frequency bands (for example, 60 GHz). In order to reduce the radio wave path loss in the ultra-high frequency band and increase the propagation distance of the radio waves, in terms of 5G communication systems, beamforming, massive multiple-input multiple-output antenna arrays, full-dimensional multiple-input multiple-output (FD-MIMO), array antennas, analog beamforming and massive antenna technology are being studied.

[0003] In particular, various technologies that improve frequency efficiency can be applied to future 5G cellular networks that require higher capacity than the current capacity. The service area of ​​a base station is called a cell. Generally, a base station with high transmission power and large coverage is called a macro cell, and a small base station with low transmission power and small coverage is called a small cell.

[0004] As described above, base stations such as macro cells or small cells are usually manufactured in a state where at least one antenna device and a wireless unit (RU; hereinafter referred to as "wireless unit RU") are physically separated from each other. Usually, each antenna device and the wireless unit RU are connected with a cable and installed on a pole at the same time.

[0005] Here, for at least one antenna device, as a format for constructing a frequency band corresponding to a base station, two antenna devices in a dual-band form may be adopted, which are implemented by antenna boards included in each antenna device and are used to cover the frequency bands corresponding to DoD (Department of Defense) and CBRS (Citizens Broadband Radio Service).

[0006] At this time, in order to form different beams according to the characteristics of the base station, each antenna device needs to adjust the predetermined direction after being combined with the pole. However, in the past, when the direction was adjusted together with the wireless unit RU, more space was required to adjust the direction. Not only that, the cable connecting the wireless unit and the antenna device was exposed to the outside, which also reduced the aesthetics. Summary of the invention

[0007] (Problem to be solved)

[0008] The present invention is proposed to solve the above-mentioned technical problems, and an object of the present invention is to provide a clamping device for a pole that can easily and detachably mount a wireless unit on a pole.

[0009] At the same time, another object of the present invention is to provide a clamping device for a wireless unit pole that can easily adjust the directions of multiple antenna devices of a base station.

[0010] In addition, another object of the present invention is to provide a clamping device for a pole of a wireless unit as follows: the exposure of the cable electrically connecting the wireless unit and the antenna device can be avoided, thereby preventing the aesthetics of the outer side of the pole from being reduced.

[0011] The technical problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by ordinary technicians in the technical field to which the present invention belongs from the following description.

[0012] (Methods of solving the problem)

[0013] According to an embodiment of the present invention, a clamping device for a wireless unit holding pole includes: a pole-side clamp, which is fixed to the holding pole and formed with a clamping hole, wherein the clamping hole is recessed from the top to the bottom; a wireless unit side clamp, wherein the front end portion is fixed to the wireless unit RU and a clamping pad is formed at the rear end portion, wherein the clamping pad is inserted from the top to the bottom into the clamping hole of the pole-side clamp for fixing; wherein the thickness of the clamping pad in the front-to-back direction can be formed inclined so that the front-to-back width gradually narrows in the direction of gravity.

[0014] Here, the clamping hole is formed to have an inner side surface with a planar shape, and the clamping pad may be formed to have a curved surface with a parabolic shape.

[0015] In addition, the rod side clamps may be configured in a pair, and the pair of rod side clamps may be spaced apart above and below the holding pole via hose clamp ring clamps.

[0016] In addition, a strap fixing hole may be formed at the rear end portions of the pair of rod-side clamps, and the hose clamp ring clamp may be inserted through the strap fixing hole in a horizontal direction.

[0017] In addition, a gear plate assembly may be respectively coupled to the upper and lower sides of the rear end portions of the pair of rod-side clamps, wherein the gear plate assembly is formed with more than two gear teeth, and the gear teeth are clamped on the outer peripheral surface of the holding pole.

[0018] In addition, the gear plate assembly may include: one or more clamping gear plates, forming the two or more gear teeth and configured to expose the two or more gear teeth toward the pole holding side; and a gear fixing plate, fixing the clamping gear plate to the upper and lower ends of the pole side clamp.

[0019] In addition, the clamping gear plate is arranged in a clamping gear plate mounting groove, and the clamping gear plate mounting groove is recessed on the upper and lower sides of the rear end portion of the rod side clamp; the gear fixing plate can be arranged in a fixing plate mounting groove, and the fixing plate mounting groove is recessed on the upper and lower sides of the rear end portion of the rod side clamp to include the clamping gear plate mounting groove.

[0020] In addition, the clamping gear plate is rotatably arranged in the clamping gear plate mounting groove in the horizontal direction; the gear plate assembly may also include a gear adjustment pin, which passes through the clamping gear plate and is then fixed in the clamping gear plate mounting groove to limit the rotation of the clamping gear plate.

[0021] In addition, the pin slots through which the gear adjustment pins penetrate in the clamping gear plate are formed in an arc shape so that the pin slots have the same radius, and the positions of the gear teeth can be adjusted within the length range of the pin slots.

[0022] In addition, the gear fixing plate can be screwed to the fixing plate mounting groove to cover the clamping gear plate when the clamping gear plate is fixed to the clamping gear plate mounting groove.

[0023] In addition, the clamping device for holding the pole of the wireless unit may also include a clamping bolt, which passes through the clamping pad from the upper surface of the clamping pad of the wireless unit side clamp, and is then threadedly fastened to the inner side of the pole side clamp, which is equivalent to the lower part of the clamping hole of the pole side clamp.

[0024] In addition, if the thread tightening force of the clamp bolt is transmitted, the outer side surface of the clamping pad and the inclined surface of the clamping hole can be interference-inserted to match each other.

[0025] (Effects of the Invention)

[0026] According to an embodiment of the present invention, the clamping device for a wireless unit pole can achieve the following effects:

[0027] First, the wireless unit can be easily and removably mounted on the pole at the desired height by means of a hose clamp.

[0028] Second, a plurality of antenna devices that can cover dual frequency bands can be provided for the wireless unit, thereby having the effect of improving beamforming performance.

[0029] Thirdly, the cables connecting the wireless unit and the plurality of antenna devices are prevented from being exposed to the outside, thereby preventing the aesthetics near the pole from being reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1a and Figure 1b1. is a perspective view showing the installation form of the wireless unit RU installed on the pole using the pole clamping device of the wireless unit according to one embodiment of the present invention;

[0031] Figure 2a and Figure 2b yes Figure 1a and Figure 1b Exploded stereogram of

[0032] Figure 3 yes Figure 1a A front view (a) and a side view (b) of the apparatus;

[0033] Figure 4 It is shown Figure 1a An exploded perspective view of a wireless unit in a structure of

[0034] Figure 5 It is along Figure 3 A partial cross-sectional stereogram taken along line EE;

[0035] Figure 6 It is along Figure 3 A partial cross-sectional stereogram taken along line FF;

[0036] Figure 7 It is shown Figure 1a A perspective view and a partially exploded perspective view of an antenna device connected to a wireless unit through a multiplex connection in a structure;

[0037] Figure 8 and Fig. 9 is an exploded perspective view showing a state in which a wireless unit is installed using a clamping device for a wireless unit holding pole according to an embodiment of the present invention;

[0038] Fig.10 is a perspective view showing a clamping device for a pole of a wireless unit according to an embodiment of the present invention;

[0039] Fig.11 and Fig.12 yes Fig.10 An exploded perspective view of a specific part of

[0040] Fig.13 A partial cross-sectional view showing a clamping device for a pole for mounting a wireless unit according to an embodiment of the present invention on a pole;

[0041] Fig.14 yes Fig.13 Stereoscopic image of

[0042] Fig.15 The invention is a three-dimensional diagram of the installation process of the wireless unit according to one embodiment of the present invention on a pole.

[0043] (Explanation of Reference Numerals)

[0044] RU: Wireless Unit A1, A2: Antenna Equipment

[0045] 10A, 10B: Hose clamp ring clamp 100: Clamping device

[0046] 110: Rod side clamp 111: Clamp hole

[0047] 112: Threaded fastening boss 113-1: Fixed plate mounting groove

[0048] 113-2: Clamping gear plate mounting slot 114: Screw

[0049] 115: Gear fixing plate 116: Clamping gear plate

[0050] 117: Strap fixing hole 118: Adjustment pin

[0051] 119: Pin slot 120: Wireless unit side clamp

[0052] 121: Pad 123: Bolt fastening hole

[0053] 125: Bolt through hole 127: Fixing bolt

[0054] 130: Clamping bolt 131: Male thread DETAILED DESCRIPTION

[0055] Hereinafter, a clamping device for a wireless unit pole according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0056] When assigning reference numerals to components of the various drawings, it should be noted that for identical components, even if they are shown in different drawings, they should have the same reference numerals as much as possible. In addition, when describing the embodiments of the present invention, if it is determined that the specific description of the relevant known structure or function hinders the understanding of the embodiments of the present invention, the specific description will be omitted.

[0057] When describing the components of the embodiments of the present invention, the terms first, second, A, B, (a), (b), etc. may be used. Such terms are only used to distinguish one component from other components, and the nature or order of the components shall not be limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by ordinary technicians in the field to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as consistent with the meaning in the relevant technical articles and shall not be interpreted in an ideal or overly formal sense unless clearly defined in this application.

[0058] Figure 1a and Figure 1bis a perspective view showing the installation form of the wireless unit on the pole using the pole clamping device of the wireless unit according to one embodiment of the present invention; Figure 2a and Figure 2b yes Figure 1a and Figure 1b Exploded stereogram of Figure 3 yes Figure 1a A front view (a) and a side view (b) of the apparatus; Figure 4 It is shown Figure 1a An exploded perspective view of a wireless unit in a structure of Figure 5 It is along Figure 3 A partial cross-sectional stereogram taken along line EE; Figure 6 It is along Figure 3 Partial cutaway stereogram taken along line FF.

[0059] like Figures 1a to 6 As shown, the pole clamping device 100 for a wireless unit according to an embodiment of the present invention performs an intermediary role in installing a base station on the pole P.

[0060] Typically, a base station may include: a radio unit (RU; hereinafter referred to as "radio unit RU") and two or more antenna devices A, wherein the two (A1, A2) or more antenna devices A are controlled by the radio unit RU and are used to cover at least dual frequency bands respectively.

[0061] It is assumed that multiple radiation element modules (not shown) are respectively configured in the two antenna devices A1 and A2, and the multiple radiation element modules are: on one side, the antenna device A1 is configured with multiple radiation element modules for covering the frequency band corresponding to DoD, and on the other side, the antenna device A2 can be configured with multiple radiation element modules for covering the frequency band corresponding to CBRS, as a format for constructing a frequency band corresponding to a small cell base station.

[0062] The two antenna devices A1 and A2 configured as described above can be adjusted in directions with strong coverage requirements by using a multiplexing connector 50 described later when they are respectively installed in the wireless unit RU, thereby achieving beam forming.

[0063] However, each antenna device A1, A2 does not necessarily have to arrange radiating element modules of the same frequency band. Although not shown in the attached drawings, the DoD channel in the 3450-3550 MHz band in the dual-band is realized on the upper front side of the macrocell antenna board (not shown) configured inside an antenna device (A1 or A2). In order to achieve a gain of 17.5 dBi, multiple antenna subarrays can be arranged through multiple radiating elements, and the CBRS channel in the 3550-3700 MHz band in the dual-band is realized on the lower front side of the macrocell antenna board. In order to achieve a gain of 15.5 dBi, multiple antenna subarrays can be arranged through multiple radiating elements.

[0064] As described above, when an antenna device (A1 or A2) arranges the radiation element modules to fully cover the dual frequency bands, and the direction of the antenna device (A1 or A2) is adjusted to the same direction, the UL (uplink) coverage can also be maximized due to the separation of TRx of each bandpass and antenna subarrays.

[0065] Here, if Figures 4 to 6 As shown, the wireless unit RU may further include a housing body 205, which is substantially formed in a rectangular hexahedron shape and has an internal space with the remaining parts opened except for the upper and lower sides. The first band RF unit 210A and the second band RF unit 210B may be arranged at intervals in the internal space of the housing body 205.

[0066] The first band RF unit 210A is associated with the CBRS channels of the two frequency bands, and the second band RF unit 210B is associated with the DoD channels of the two frequency bands, thereby distinguishing and defining the first band RF unit 210A and the second band RF unit 210B.

[0067] In more detail, the first band RF part 210A may include: a CBRS filter 220A built into a left side portion of the internal space of the housing body 205; and a CBRS PAU 240A stacked on the outside of the CBRS filter 220A via a clamshell board 230A.

[0068] In addition, the second band RF unit 210B may include a DoD filter 220B built into the right side portion in the internal space of the housing body 205 , and a DoD PAU 240B stacked on the outside of the DoD filter 220B via a clamshell plate 230B.

[0069] In the internal space of the housing body 205 , a DTA board 240C and a PSA board 240D may be disposed at the front and rear portions, respectively, and the DTA board 240C and the PSA board 240D jointly intervene in the first band RF unit 210A and the second band RF unit 210B.

[0070] Meanwhile, 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 configured to cover the four sides of the opening of the housing body 205 .

[0071] For reference, a wireless unit pole clamping device 100 according to an embodiment of the present invention described below may be combined with a rear PSA housing cover 250D in the structure of the wireless unit RU.

[0072] On the other hand, in the structure of the first band RF unit 210A, the CBRS PAU 240A and the structure of the second band RF unit 210B, the DoD PAU 240B and the DTA board 240C and the PSA board 240D act as a structure that performs a main board function, and heat-generating elements not shown are installed on each outer side surface, while the PAU housing cover 250A, the left PAU housing cover 250B, the front DTA housing cover 250C and the rear PSA housing cover 250D can perform the function of dissipating heat generated from the heat-generating elements installed on each outer side surface through each surface of the housing body 205.

[0073] Therefore, the right PAU shell cover 250A, the left PAU shell cover 250B, the front DTA shell cover 250C and the rear PSA shell cover 250D are made of metal materials with excellent thermal conductivity, and preferably the outer sides are respectively integrated with multiple heat sinks 251, so that the heat generated by the CBRS PAU 240A, DoD PAU 240B, DTA board 240C and PSA board 240D can be dissipated in all directions except the upper and lower parts.

[0074] In addition, two or more antenna devices A1 and A2 described later may be combined on the upper surface of the housing body 205, and a CCTV (C) for real-time monitoring of the lower periphery may be installed on the lower surface of the housing body 205.

[0075] Then, an external installation component 400 may be arranged under the housing body 205 for connecting to the wireless unit RU via an external cable. Although not shown in the drawings, the external cable is hidden and arranged inside the pole P, and then the external exposure is minimized by forming a cable arrangement port (not shown) at a portion of the pole P close to the external installation component 400, and the external cable is connected to the external installation component 400 in this state.

[0076] Therefore, according to the clamping device 100 for the pole of the wireless unit of one embodiment of the present invention, the external cable connecting the pole P and the wireless unit RU is connected in a state where external exposure is minimized as described above, and the wireless unit RU and the antenna devices A1 and A2 respectively arrange multiple cables 60 in a state where they are not exposed to the outside through the cable containing tube 57 of the multiplex connector 50 described later, thereby preventing the appearance from being degraded.

[0077] Figure 7 It is shown Figure 1a A three-dimensional diagram and a partially exploded three-dimensional diagram of the antenna device connected to the wireless unit through a multiplex connector in the structure.

[0078] like Figure 7As shown, more than two antenna devices A1, A2 can be electrically connected to the wireless unit RU through a multiplexing connection 50 respectively.

[0079] like Figure 7 As shown, the multiplex connector 50 connects the wireless unit side female connector 90RU and the antenna side female connector 90AT while adjusting the front facing position (adjustment direction) of each antenna device A1, A2, thereby effectively preventing interference with surrounding antenna devices.

[0080] In more detail, the multiplex connector 50 may include: a fixed portion 51A, 51B, which is fixed to the female connector 90RU on the wireless unit side through a cable containing tube 57; a spherical joint portion 53, one end of which is rotatably connected to the fixed portion 51A, 51B, and the other end is connected to the female connector 90AT on the antenna side.

[0081] Multiple cables 60 that respectively connect the wireless unit RU and the antenna devices A1 and A2 are passed through the cable containing tube 57, the fixing parts 51A, 51B and the ball joint part 53 to hide the wiring and avoid exposure. Male connectors (not shown) are arranged at each end of the cable 60 and are respectively electrically connected to the wireless unit side female connector 90RU and the antenna side female connector 90AT.

[0082] At the same time, fixing nuts 59 and 55 are respectively arranged at the end of the cable containing tube 57 and the end of the spherical joint part 53; the fixing nut 59 is arranged in a state of being inserted into the end of the cable containing tube 57, and the fixing nut 59 is fastened to a male thread (not marked with a figure mark) formed on the outer peripheral surface of the wireless unit side female connector 90RU; the fixing nut 55 is arranged in a state of being inserted into the end of the spherical joint part 53, and the fixing nut 55 is fastened to a male thread (not marked with a figure mark) formed on the outer peripheral surface of the antenna side female connector 90AT, so that the electrical connection can be maintained after the respective terminal pins (not shown) of the male connector (not shown) are connected to the wireless unit side female connector 90RU and the antenna side female connector 90AT.

[0083] As described above, the multiplexing connector 50 can electrically connect the two antenna devices A1 and A2 for the wireless unit RU without exposing the cable 60 in appearance, and at the same time, the directions of the two antenna devices A1 and A2 can be adjusted to the appropriate direction for beamforming through the spherical joint part 53, wherein the antenna devices A1 and A2 are configured into two in a dual-band form in order to cover more than two frequency bands. Therefore, the multiplexing connector 50 provides a very great advantage in the construction of the base station.

[0084] On the other hand, Figures 1a to 3As shown, the wireless unit RU which can be combined with more than two antenna devices A1 and A2 is detachably mounted on the pole P by a clamping device 100 for the wireless unit of an embodiment of the present invention.

[0085] Figure 8 and Fig. 9 is an exploded perspective view showing a state in which a wireless unit is installed using a clamping device for a wireless unit holding pole according to an embodiment of the present invention; Fig.10 is a perspective view showing a clamping device for a pole of a wireless unit according to an embodiment of the present invention; Fig.11 and Fig.12 yes Fig.10 An exploded perspective view of a specific part of Fig.13 A partial cross-sectional view showing a clamping device for a pole for mounting a wireless unit according to an embodiment of the present invention on a pole; Fig.14 yes Fig.13 Stereoscopic diagram.

[0086] like Figures 8 to 14 As shown, a clamping device 100 for a wireless unit of an embodiment of the present invention may include an upper clamp 100A and a lower clamp 100B, wherein the upper clamp 100A is located at the upper part relative to the pole P, and the lower clamp 100B is located at the lower part relatively. Here, the concept of whether it is relatively upper or relatively lower is not based on the upper and lower parts of the pole P, but is only used to define the upper and lower positions between the upper clamp 100A and the lower clamp 100B, and the scope of rights of the present invention shall not be limited thereby.

[0087] Hereinafter, the upper clamp 100A and the lower clamp 100B are all composed of the same structure, so for the convenience of description, only one structure of the upper clamp 100A and the lower clamp 100B is described in detail to omit or replace the description of the remaining structure.

[0088] A clamping device 100 for a wireless unit pole of an embodiment of the present invention includes: a pole-side clamp 110, which is fixed to the pole P and formed with a clamping hole 111, and the clamping hole 111 is recessed from the top to the bottom; a wireless unit side clamp 120, the front end of which is fixed to the wireless unit RU, and a clamping pad 121 is formed at the rear end, and the clamping pad 121 is inserted from the top to the bottom of the clamping hole 111 of the pole-side clamp 110 for fixing.

[0089] Here, preferably, the clamping hole 111 and the clamping pad 121 are formed obliquely so that the front-to-back width gradually narrows in the direction of gravity.

[0090] On the other hand, the rod side clamps 110 may be arranged in a pair, and the pair of rod side clamps 110 may be spaced apart above and below the pole P by the hose clamp ring clamps 10A and 10B.

[0091] Once the pole-side clamp 110 is installed on the pole P, there is no need to separate it unless the directions of the antenna devices A1 and A2 need to be macroscopically adjusted. Therefore, the pole-side clamp 110 is easier to install by using the simple method of the hose clamp ring clamps 10A and 10B.

[0092] The strap fixing holes 117 through which the hose clamps 10A and 10B are horizontally inserted may be formed at the rear ends of the pair of rod side clamps 110. More specifically, the strap fixing holes 117 may be formed to penetrate from the left side or right side of the rear ends of the rod side clamps 110 in the opposite direction.

[0093] At the same time, a gear plate assembly (not marked with a reference numeral) may be respectively coupled to the upper and lower sides of the rear ends of a pair of pole side clamps 110 , wherein the gear plate assembly is formed with more than two gear teeth to clamp the outer peripheral surface of the pole P.

[0094] In more detail, Figures 8 to 12 As shown, the gear plate assembly may include: one or more clamping gear plates 116, formed with more than two gear teeth, and exposing more than two gear teeth to the pole P side; a gear fixing plate 115, fixing the clamping gear plate 116 at the upper and lower ends of the pole side clamp 110.

[0095] The clamping gear plate 116 is arranged in the clamping gear plate mounting groove 113-2, and the clamping gear plate mounting groove 113-2 is recessed at the upper and lower sides of the rear end portion of the rod side clamp 110. The gear fixing plate 115 can be arranged in the fixing plate mounting groove 113-1, and the fixing plate mounting groove 113-1 is recessed at the upper and lower sides of the rear end portion of the rod side clamp 110 to form the clamping gear plate mounting groove 113-2.

[0096] like Fig.12 As shown, two clamping gear plate mounting grooves 113-2 are formed on the upper and lower sides of the rear end of the rod side clamp 110 at a predetermined distance on the left and right sides, and a pair of clamping gear plates 116 are also configured to be set in each clamping gear plate mounting groove 113-2.

[0097] First, if two clamping gear plates 116 are set in the clamping gear plate mounting groove 113 - 2 , the gear fixing plate 115 configured as a single piece is installed and fixed in the fixing plate mounting groove 113 - 1 , thereby fixing the two clamping gear plates 116 at the same time.

[0098] Here, the clamping gear plate 116 is configured to be horizontally rotatable around an arbitrary rotation point in the clamping gear plate mounting groove 113-2. In this way, the clamping gear plate 116 is rotated, and the two or more gear teeth exposed to the rear of the pole side clamp 110 rotate along a circular trajectory, and the position of the gear teeth can be adjusted corresponding to various outer diameters of the pole P.

[0099] On the other hand, the gear plate assembly may further include a gear adjusting pin 118 , which passes through the clamping gear plate 116 and is then fixed in the clamping gear plate mounting groove 113 - 2 to limit the rotation of the clamping gear plate 116 .

[0100] Here, in the clamping gear plate 116 , the pin slots 119 penetrated by the gear adjustment pins 118 are formed in an arc shape so that the pin slots 119 have the same radius and the positions of the gear teeth can be adjusted within the length of the pin slots 119 .

[0101] On the other hand, the gear fixing plate 115 is installed in the fixing plate mounting groove 113 - 1 to cover the clamping gear plate 116 in a state where the clamping gear plate 116 is fixed in the clamping gear plate mounting groove 113 - 2 , and then may be fixed by a plurality of screws 114 .

[0102] On the other hand, the clamping device 100 for holding a pole of a wireless unit of an embodiment of the present invention may further include a clamping bolt 130, which penetrates the clamping pad 121 from the upper surface of the clamping pad 121 of the wireless unit side clamp 120, and is then threadedly fastened to the inner side of the pole side clamp 110, which is equivalent to the lower part of the clamping hole 111 of the pole side clamp 110.

[0103] A male thread 131 is formed at a lower end portion in an outer circumferential surface of the clamp bolt 130 , and a threaded fastening boss 112 formed with a female thread (not shown) to be threadedly coupled to the clamp bolt 130 may be provided inside the rod-side clamp 110 .

[0104] The clamp bolt 130 penetrates the clamp pad 121 and is exposed downward, thereby forming a relatively thicker and curved through portion 121-1 in the clamp pad 121. A bolt through hole 121-2 is formed inside the through portion 121-1.

[0105] Here, the outer side surface of the clamping pad 121 and the inner side surface of the clamping hole 111 are formed to have an inclined surface, so that the width gradually narrows downward (in the direction of gravity). If the threaded tightening force of the clamping bolt 130 is transmitted, the outer side surface of the clamping pad 121 and the inner side surface of the clamping hole 111, that is, the inclined surface, are interference-inserted to match each other.

[0106] The inclined surface of the card pad 121 as described above is preferably inclined to be a parabolic curved surface rather than a completely straight line.

[0107] As described above, when the thickness of the card pad 121 in the front-to-back direction has a curved and inclined inclined surface, the minimum joint surface can be ensured on the inner side surface of the card hole 111. At this point, the movement of the wireless unit measuring fixture 120 caused by external forces such as strong winds due to gaps caused by assembly tolerances when the card pad 121 is formed to have the same thickness in the front-to-back directions can be prevented in advance, thereby resulting in a difference in effect.

[0108] Fig.15 The invention is a three-dimensional diagram of the installation process of the wireless unit according to one embodiment of the present invention on a pole.

[0109] The following is a brief description of the process of installing the wireless unit RU on the pole P using the pole clamping device 100 of the wireless unit according to one embodiment of the present invention having the above-mentioned structure.

[0110] First, if Fig.15 As shown in (a), the hose clamp ring clamps 10A and 10B are installed on the pole P, and the strap fixing holes 117 of the pole-side clamp 110 are penetrated to fix the upper clamp 100A and the lower clamp 100B.

[0111] At this time, the upper and lower spacing distances between the upper and lower clamps 100A and 100B should be adjusted to correspond to the upper and lower spacing distances between the upper and lower wireless unit clamps 120 to be fixed on the wireless unit RU to be installed.

[0112] Then, the wireless unit side clamp 120 can be fixed by the action of penetrating the bolt through hole 125 formed in the wireless unit side clamp 120 and then fastening it to the bolt fastening hole RU-25 formed on the rear surface of the wireless unit RU.

[0113] In the above-mentioned state, if Fig.15 As shown in (b), the wireless unit RU is moved toward the pole P side, and as Fig.15 As shown in (c), the card hole 111 of the rod side clamp 110 is located directly below the card pad 121 of the wireless unit side clamp 120, and then the card pad 121 is moved downward, and then the card pad 121 can be inserted into and stuck in the card hole 111. Through this action, the wireless unit RU can be temporarily fixed.

[0114] As described above, the workers on site can easily and temporarily fix the relatively heavy wireless unit RU to the pole-side clamp 110, thereby providing an advantage of ensuring the safety of the workers on site.

[0115] Then, the clamp bolt 130 is tightened downward through the bolt tightening hole 123 formed on the upper surface of the wireless unit side clamp 120 , and is screwed together so that the male thread 131 is tightened to the screw tightening boss 112 of the rod side clamp 110 .

[0116] At this time, the thread tightening force of the clamp bolt 130 is transmitted to the rod-side clamp 110 and the wireless unit-side clamp 120 , and the clamp pad 121 and the clamp hole 111 can be matched and firmly combined in the form of interference insertion.

[0117] Here, the card pad 121 has an inclined surface that is inclined to gradually reduce the thickness in the front-to-back direction in the direction of gravity. When the card pad 121 is formed to be inserted into the card hole 111 with interference fit, the minimum bonding surface can be ensured, thereby preventing movement caused by external forces (for example, strong winds, etc.) from happening.

[0118] According to the clamping device 100 for a wireless unit pole of one embodiment of the present invention constructed as described above, by using the hose clamps 10A and 10B, a worker can detachably install the wireless unit RU at a desired installation position in the pole P on site. Moreover, the connection cables between the wireless unit RU and the multiple antenna devices A1 and A2 can be avoided as much as possible from being exposed to the outside, which has the advantage of preventing the appearance of the place where the wireless unit RU is installed from being reduced.

[0119] The above is a detailed description of a clamping device for a wireless unit pole according to an embodiment of the present invention with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above embodiments. Relevant personnel with common knowledge in the technical field to which the present invention belongs can certainly make various modifications and implement them within the same scope. Therefore, the true scope of the rights of the present invention should be defined by the claims.

[0120] Industrial Applicability

[0121] The present invention provides a clamping device for a pole, which can easily and detachably install a wireless unit on the pole and easily adjust the directions of multiple antenna devices of a base station. In addition, it avoids exposure of cables electrically connecting the wireless unit and the antenna devices, thereby preventing the aesthetics of the outer side of the pole from being reduced.

Claims

1. A clamping device for a wireless unit pole, comprising: A pole-side clamp is fixed to the holding pole and is formed with a clamping hole, the clamping hole being recessed from the upper side to the lower side; and A wireless unit side clamp, the front end of which is fixed to the wireless unit (RU), and a card pad is formed at the rear end, and the card pad is inserted from the upper part to the lower part of the card hole of the rod side clamp to be fixed; The thickness of the card pad in the front-to-back direction is inclined so that the front-to-back width gradually narrows in the direction of gravity.

2. The clamping device for a wireless unit pole according to claim 1, characterized in that: The clamping hole is formed to have an inner side surface with a planar shape; The card pad is formed into a curved surface having a parabolic shape.

3. The clamping device for a wireless unit pole according to claim 1, characterized in that: The rod side clamps are configured in a pair, and the pair of rod side clamps are spaced apart above and below the holding pole by a hose clamp ring clamp.

4. The clamping device for a wireless unit pole according to claim 3, characterized in that: A strap fixing hole is formed at the rear end portions of the pair of rod-side clamps, and the hose clamp is inserted through the strap fixing hole in a horizontal direction.

5. The clamping device for a wireless unit pole according to claim 3, characterized in that: Gear plate components are respectively coupled to the upper and lower sides of the rear end portions of the pair of rod-side clamps. The gear plate components are formed with more than two gear teeth, and the gear teeth are clamped on the outer peripheral surface of the holding pole.

6. The clamping device for a wireless unit pole according to claim 5, characterized in that: The gear plate assembly comprises: One or more clamping gear plates, forming the two or more gear teeth and configured to expose the two or more gear teeth toward the pole holding side; and The gear fixing plate fixes the clamping gear plate to the upper end and the lower end of the rod side clamp.

7. The clamping device for a wireless unit pole according to claim 6, characterized in that: The clamping gear plate is arranged in a clamping gear plate mounting groove, and the clamping gear plate mounting groove is formed by recessing the upper side and the lower side of the rear end portion of the rod side clamp; The gear fixing plate is disposed in a fixing plate mounting groove, and the fixing plate mounting groove is recessed on the upper and lower sides of the rear end portion of the rod side clamp to include the clamping gear plate mounting groove.

8. The clamping device for a wireless unit pole according to claim 7, characterized in that: The clamping gear plate is rotatably arranged in the clamping gear plate mounting groove in a horizontal direction; The gear plate assembly also includes a gear adjustment pin, which passes through the clamping gear plate and is further fixed in the clamping gear plate mounting slot to limit the rotation of the clamping gear plate.

9. The clamping device for a wireless unit pole according to claim 8, characterized in that: The pin slots in the clamping gear plate through which the gear adjustment pins penetrate are formed into an arc shape so that the pin slots have the same radius; The position of the gear teeth is adjusted over the length of the pin slot.

10. The clamping device for a wireless unit pole according to claim 7, characterized in that: The gear fixing plate is fixed to the fixing plate mounting groove by screws in a state where the clamping gear plate is fixed to the clamping gear plate mounting groove to cover the clamping gear plate.

11. The clamping device for a wireless unit pole according to claim 1, characterized in that: Also includes: The clamp bolt penetrates the clamp pad from the upper surface of the clamp pad of the wireless unit side clamp and is screwed and fastened to the inner side of the rod side clamp, corresponding to the lower part of the clamp hole of the rod side clamp.

12. The clamping device for a wireless unit pole according to claim 11, characterized in that: If the thread tightening force of the clamping bolt is transmitted, the outer side surface of the clamping pad and the inclined surface of the clamping hole are fitted with each other and interference-inserted.

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