Antenna clamping device

Abstract

Provided is an antenna clamping device that is stable with respect to a support pole and further has the advantage of enabling miniaturization design of a product. 【Solution means】The antenna clamping device and the antenna installation bracket are connected at least at one location to an upper support bracket portion so as to be steerably rotatable via a pair of tilting link members, a tilting drive unit, and a steering drive unit at an upper end portion, and are connected at least at one location to a lower support bracket portion so as to be steerably rotatable at a lower end portion.

Description

[Technical Field]

[0001] The present invention relates to a clamping apparatus for antennas, and more particularly to a clamping apparatus for antennas that allows efficient placement of antennas in a crowded installation space, facilitates adjustment of the direction of the antennas, minimizes interference during direction adjustment depending on the size of the antennas, and minimizes the generation of abnormal noise such as backlash noise during direction adjustment of the antennas. [Background technology]

[0002] Generally, wireless communication technology, for example, MIMO (Multiple Input Multiple Output) technology, is a technology that dramatically increases data transmission capacity by using multiple antennas. It is a spatial multiplexing technique in which a transmitter transmits different data through each transmitting antenna, and a receiver separates the transmitted data through appropriate signal processing.

[0003] Therefore, by simultaneously increasing the number of transmitting and receiving antennas, the channel capacity increases, enabling more data to be transmitted. For example, increasing the number of antennas to 10 secures approximately 10 times the channel capacity compared to the current single antenna system using the same frequency band.

[0004] 4G LTE-advanced used up to eight antennas, and in the pre-5G stage, products equipped with 64 or 128 antennas were released. Currently, for 5G, base station equipment with a much larger number of antennas is being developed, which is called Massive MIMO technology. While previous cell operations were 2-dimensional, the introduction of Massive MIMO technology now makes 3D-Beamforming possible, and it is preferable to call it FD-MIMO (Full Dimension).

[0005] In Massive MIMO technology, as the number of ANTs (antennas) increases, the number of transmitters and filters also increases. However, due to the cost of leasing installation sites and spatial constraints, it is practical to make RF components (antennas / filters / power amplifiers / transceivers, etc.) small, light, and inexpensive. Massive MIMO requires high output power to expand coverage, but the power consumption and heat generated by such high output power act as a negative factor in reducing weight and size.

[0006] In particular, when a MIMO antenna, in which modules realizing RF elements and digital elements are combined in a stacked structure, is installed in a limited space, there is a need for a compact and miniaturized design for the multiple layers that make up the MIMO antenna to maximize ease of installation and space utilization, and there is currently a strong demand for flexible direction adjustment of an antenna device installed on a single support pole.In response to this need, Korean Patent Publication No. 10-2095871 (published on April 2, 2020) (hereinafter referred to as the "prior art") discloses an "antenna clamping device" that includes a tilting unit for rotating an antenna device up and down and a steering unit for rotating the antenna device left and right.

[0007] However, the conventional technology has a problem in that the tilting unit has a small range of rotation for the antenna device in the up and down direction.

[0008] In addition, it has been pointed out that whenever a rather heavy antenna device is tilted or steered to adjust its directionality, backlash noise often occurs at the gear joint that is connected to allow the tilting and steering rotation. Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made to solve the above-mentioned technical problems, and aims to provide an antenna clamping device that can tilt and rotate the antenna equipment in the vertical direction while simultaneously steering and rotating it in the horizontal direction, thereby ensuring the maximum rotation range in each direction.

[0010] Another object of the present invention is to provide an antenna clamping device that can be selectively equipped with an extension bar assembly so that a user can fit the number of antenna devices to be installed on a support pole and the installation space.

[0011] Another object of the present invention is to provide an antenna clamping device that can prevent mechanical backlash noise from occurring at each connecting part that is realized to allow tilting and steering rotation when adjusting the antenna direction including tilting and steering rotation of a relatively heavy antenna device.

[0012] It is yet another object of the present invention to provide an antenna clamping device that can be installed in a concentrated manner to form two steering rotation points based on the antenna installation bracket, and that allows for a compact product design.

[0013] The objectives of the present invention are not limited to those mentioned above, and other technical objectives not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0014] According to one embodiment of the present invention, an antenna clamping device includes a pole mounting bracket provided on a pole; a steering drive unit connected to the pole mounting bracket and driven to steer the antenna device; a tilting drive unit connected to the steering drive unit and driven to tilt the antenna device; and an antenna mounting bracket connected to the tilting drive unit via a pair of tilting link members and having the antenna device mounted in front of it, wherein an upper end of the antenna mounting bracket is connected to the pole mounting bracket via the pair of tilting link members, the tilting drive unit, and the steering drive unit at at least one point for steering rotation, and a lower end of the antenna mounting bracket is connected to the pole mounting bracket at at least one point for steering rotation.

[0015] Here, the support pole installation bracket portion may include fixed bracket portions provided on the top and bottom of the support pole to mediate the installation of the antenna equipment on the support pole, and a support bracket portion fixedly installed on the support pole to correspond to the fixed bracket portions.

[0016] In addition, the fixed bracket portion may include an upper fixed bracket portion provided on the support pole, and a lower fixed bracket portion provided on the support pole and below the upper fixed bracket portion, and the support bracket portion may include an upper support bracket portion fixedly installed on the support pole to correspond to the upper fixed bracket portion, and a lower support bracket portion fixedly installed on the support pole to correspond to the lower fixed bracket portion.

[0017] The antenna mounting bracket may have an upper end hinged to the upper support bracket portion and a lower end hinged to the lower support bracket portion.

[0018] In addition, when a hinge connection point at one end of the tilting link member with the tilting drive unit is defined as a T1 pivot point, a hinge connection point at the other end of the tilting link member with the antenna installation bracket is defined as a T2 pivot point, and a hinge connection point between the tilting drive unit and the steering drive unit is defined as a T3 pivot point, and a hinge connection point between the steering drive unit and the upper support bracket part is defined as an S1 pivot point, and a hinge connection point between the antenna installation bracket and the lower support bracket part is defined as an S2 pivot point, the T3 pivot point may be located behind an imaginary straight line connecting the T1 pivot point and the T2 pivot point before the antenna device is tilted.

[0019] The T3 rotation point may be located forward of an imaginary line connecting the S1 rotation point and the S2 rotation point.

[0020] The S1 pivot point and the S2 pivot point may be arranged on the same vertical axis.

[0021] In addition, the tilting drive unit can be hingedly connected to the steering drive unit at the T3 rotation point via a unit connecting hinge so as to be relatively freely rotatable.

[0022] In addition, the antenna installation bracket includes a base bracket panel formed in a panel shape, and an upper horizontal bracket and a lower horizontal bracket fixed to a rear portion of the base bracket panel, and the upper horizontal bracket and the lower horizontal bracket can be connected to the upper support bracket portion and the lower support bracket portion provided at the corresponding heights, respectively.

[0023] In addition, the upper support bracket portion may be hingedly connected to the steering drive unit to have the S1 pivot point, and simultaneously the steering drive unit and the tilting drive unit may be hingedly connected to each other to have the T3 pivot point, and may be hingedly connected to the upper horizontal bracket of the antenna installation bracket via the tilting link member to have the T1 pivot point and the T2 pivot point.

[0024] In addition, the lower support bracket portion may be hingedly connected to the mounting pivot block to have the S2 pivot point, and at the same time, may be hingedly connected to the lower horizontal bracket of the antenna installation bracket to have the T4 pivot point.

[0025] The left and right ends of the upper support bracket and the left and right ends of the lower support bracket can be connected in the up and down direction by a pair of vertical support frames, respectively.

[0026] In addition, an extension bar assembly may be detachably provided between the upper and lower support bracket portions and the support pole, selectively separating the upper and lower support bracket portions from the support pole by a predetermined distance.

[0027] In addition, the extension bar assembly includes a pair of front and rear horizontal bars that are provided at a height corresponding to the upper and lower fixed bracket portions and extend horizontally in the front-to-rear direction toward the upper and lower fixed bracket portions, and left and right horizontal bars that are arranged horizontally left and right to connect the pair of front and rear horizontal bars, and the front ends of the pair of front and rear horizontal bars can be connected in the vertical direction by a pair of vertical support frames.

[0028] The pair of vertical support frames may have an "L"-shaped horizontal cross section so as to simultaneously support the side end surfaces and rear end surfaces of the upper support bracket portion and the lower support bracket portion.

[0029] The front ends of the pair of vertical support frames are connected to the upper support bracket portion. a first pair of support bracket fastening bolts passing through; and 、 Lower support bracket A second pair of penetrating The pair of vertical support frames may be fixed by support bracket fastening bolts, and rear ends of the pair of vertical support frames may be fixed by support pole fixing bolts inserted through the upper and lower fixing bracket portions. [Effects of the Invention]

[0030] According to the clamping device for an antenna according to an embodiment of the present invention, the following various effects can be achieved.

[0031] First, the user can selectively apply a clamping device with an extension bar assembly according to the number of antenna devices to be installed on the pole and the installation space, thereby maximizing the convenience of installation on the pole and space utilization.

[0032] Second, when adjusting the antenna direction, including tilting and steering rotation of the antenna device, which is a relatively heavy body, it has the effect of preventing mechanical backlash noise from being generated from each connecting part that is realized to allow tilting and steering rotation.

[0033] Third, the antenna devices can be centrally installed to form two steering rotation points based on the antenna installation bracket, which has the effect of enabling a more compact product design. [Brief explanation of the drawings]

[0034] [Figure 1A] 1 is a front perspective view showing an antenna device mounted on a support pole using an antenna clamping device according to an embodiment of the present invention; [Figure 1B]1 is a rear perspective view showing the state in which an antenna device using an antenna clamping device according to an embodiment of the present invention is installed on a support pole. [Figure 2A] 1 is a front perspective view showing an antenna clamping device according to an embodiment of the present invention; [Figure 2B] 1 is a rear perspective view showing an antenna clamping device according to an embodiment of the present invention; [Figure 3A] 2B is an exploded perspective view of FIG. 2A, showing how the antenna installation bracket is connected to the tilting drive unit and the steering drive unit in the configuration of FIG. 2A. FIG. [Figure 3B] 2C is an exploded perspective view of FIG. 2B, showing how the antenna installation bracket is connected to the tilting drive unit and the steering drive unit in the configuration of FIG. 2B. FIG. [Figure 4A] FIG. 2B is an exploded perspective view of a detail of FIG. 2A. [Figure 4B] FIG. 2C is an exploded perspective view of a detail of FIG. 2B. [Figure 5A] 2B is a side view showing the state of installation of the antenna device when an extension bar assembly is not used and when an extension bar assembly is used in the configuration of FIG. 2A. FIG. [Figure 5B] 2C are plan views showing installation states of antenna devices in the configuration of FIG. 2B when an extension bar assembly is not used and when an extension bar assembly is used. [Figure 5C] FIG. 5B is a cross-sectional view taken along line BB shown in (b) of FIG. 5A. [Figure 6] 2 is a partially cutaway perspective view showing the installation of a detachable clamping gear panel clamped to the outer peripheral surface of a support pole in the configuration of FIG. 1. FIG. [Figure 7] 4A and 4B, is an exploded perspective view showing the lower end of the antenna installation bracket, the support pole side installation bracket part, and the mounting rotation block that mediates the connection. FIG. [Figure 8A]8 is an exploded perspective view of the front part of the configuration of FIG. 7, in which the mounting rotation block is disassembled. FIG. [Figure 8B] 8 is an exploded perspective view of the rear portion of the configuration of FIG. 7, in which the mounting rotation block is disassembled. FIG. [Figure 9] FIG. 8C is a partial vertical cross-sectional view of a connecting portion of the configuration of FIGS. 8A and 8B, illustrating the function of a backlash blocking bush. [Figure 10A] 1 is an exploded perspective view of the left side of a tilting drive unit and a steering drive unit of an antenna clamping device according to an embodiment of the present invention; FIG. [Figure 10B] 1 is an exploded perspective view of the right side of a tilting drive unit and a steering drive unit of an antenna clamping device according to an embodiment of the present invention; FIG. [Figure 11A] 3 is an exploded perspective view of one side of the antenna clamping device according to the embodiment of the present invention, illustrating the connection relationship between a tilting drive unit, a steering drive unit, and a tilting link member. FIG. [Figure 11B] 10 is an exploded perspective view of the other side of the antenna clamping device according to the embodiment of the present invention, illustrating the connection relationship between a tilting drive unit, a steering drive unit, and a tilting link member. FIG. [Figure 12] FIG. 11B is a detailed exploded perspective view of FIG. 11A. [Figure 13A] 2 is an exploded perspective view of one side of a tilting drive unit of a clamping device for an antenna according to an embodiment of the present invention; FIG. [Figure 13B] 3 is an exploded perspective view of the other side of a tilting drive unit of the clamping device for an antenna according to the embodiment of the present invention; FIG. [Figure 14] 1 is an exploded perspective view of a steering drive unit in a configuration of an antenna clamping device according to an embodiment of the present invention; [Figure 15] 15 is a perspective view showing the transmission gear assembly of the configuration of FIG. 14 with the gear housing removed. FIG. [Figure 16]FIG. 15 is a plan view of the configuration of FIG. 14 with the steering unit upper housing removed. [Figure 17] 1 is a perspective view showing how the direction of an antenna device is set by tilting rotation and / or steering rotation using an antenna clamping device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a clamping device for an antenna according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0036] When assigning reference numerals to components in each drawing, it should be noted that the same components are assigned the same numerals as much as possible even if they are displayed in different drawings. Furthermore, when describing the embodiments of the present invention, if it is determined that a detailed description of such well-known configurations or functions would hinder understanding of the embodiments of the present invention, the detailed description will be omitted.

[0037] When describing components of embodiments of the present invention, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used. These terms are merely used to distinguish the component from other components and do not limit the nature, order, or procedure of the components. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted to have a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

[0038] 1A and 1B are front and rear perspective views showing the installation of an antenna device on a support pole using an antenna clamping device according to an embodiment of the present invention, FIGS. 2A and 2B are front and rear perspective views showing an antenna clamping device according to an embodiment of the present invention, and FIGS. 3A and 3B are exploded perspective views of FIGS. 2A and 2B, respectively, showing the connection of an antenna installation bracket to a tilting drive unit and a steering drive unit in the configurations of FIGS. 2A and 2B. 4A and 4B are detailed exploded perspective views of FIGS. 2A and 2B, FIGS. 5A and 5B are side and plan views showing the installation of antenna equipment in the configurations of FIGS. 2A and 2B when an extension bar assembly is not used and when an extension bar assembly is used, FIG. 5C is a cross-sectional view taken along line BB shown in (b) of FIG. 5A, and FIG. 6 is a partially cutaway perspective view showing the installation of a detachable clamping gear panel clamped to the outer peripheral surface of the support pole in the configuration of FIG. 1.

[0039] As shown in Figures 1A to 6, an antenna clamping device 1 according to one embodiment of the present invention mediates the installation of an antenna device A on a support pole P, and at the same time, it functions to enable detailed directionality setting to satisfy the beam-forming design of the frequency beam oscillated through the antenna device A on the fixed support pole P.

[0040] More specifically, as shown in Figures 1A and 1B, the antenna clamping device 1 according to one embodiment of the present invention can be coupled horizontally at a predetermined distance from the longitudinal direction of the vertically-mounted support pole P so as to be cantilever-shaped, via support pole installation bracket parts 50A, 50B, 80A, and 80B that are pre-installed around the outer periphery of the support pole P.

[0041] Here, the support pole installation bracket parts 50A, 50B, 80A, 80B may include fixed bracket parts 50A, 50B provided on the top and bottom of the support pole P to mediate installation of the antenna device A on the support pole P, and support bracket parts 80A, 80B fixedly installed on the support pole P to correspond to the fixed bracket part 50A. The specific configurations and functions of the fixed bracket parts 50A, 50B and the support bracket parts 80A, 80B will be described in more detail later.

[0042] For ease of understanding, the clamping device 1 realized in the embodiment of the present invention is described as being applied to the installation of antenna equipment A as an example, but it should be understood that the invention also includes all cases in which lighting equipment (not shown), such as LED lighting equipment and high-power sports lighting, is installed on a support pole P, in addition to antenna equipment A.

[0043] For example, by using the clamping device 1 realized in the embodiment of the present invention to mediate the installation of lighting fixtures installed in sports stadiums, etc., the user can perform tilting and / or steering rotation operations in the desired direction.

[0044] 1A and 1B, an antenna clamping device 1 according to one embodiment of the present invention can be installed with an extension bar assembly 60 interposed therebetween, which adjusts the installation distance of the antenna device A so that it is spaced a predetermined distance from the support pole P.

[0045] 5A to 5C, the extension bar assembly 60 may be selectively provided depending on whether or not the antenna device A is installed separately from the support pole P. When the antenna device A is coupled closely to the outer periphery of the support pole P without the need for the extension bar assembly 60, only the components corresponding to the extension bar assembly 60 can be detached and removed. When the extension bar assembly 60 is removed, the clamping gear panels 67 provided on the left and right horizontal bars 63 (described later) are directly attached to the upper support bracket portion 80A and the lower support bracket portion 80B (described later) and directly clamp the outer periphery of the support pole P, and at the same time, the support pole fixing bolts 52 (described later) fastened to the upper fixing bracket portion 50A and the lower fixing bracket portion 50B can be directly fastened to the upper support bracket portion 80A and the lower support bracket portion 80B.

[0046] 1A and 1B show an embodiment in which the above-described extension bar assembly 60 is provided, while FIGS. 5A and 5B(a) show an embodiment in which the extension bar assembly 60 is omitted.

[0047] Here, the extension bar assembly 60 may include an upper extension bar assembly (not shown) provided at a height corresponding to the upper fixing bracket portion 50A described above, and a lower extension bar assembly (not shown) provided at a height corresponding to the lower fixing bracket portion 50B. The upper extension bar assembly and the lower extension bar assembly have the same configuration except for their positions, so separate reference numerals are not used, and a description of either the upper extension bar assembly or the lower extension bar assembly can be used to describe the other.

[0048] Meanwhile, the extension bar assembly 60 may include a pair of front and rear horizontal bars 61A, 61B extending horizontally toward both the left and right ends of the upper fixed bracket portion 50A and the lower fixed bracket portion 50B, and a left and right horizontal bar 63 arranged horizontally to the left and right and connecting the rear ends of the pair of front and rear horizontal bars 61A, 61B.

[0049] Although not shown with separate reference numerals, such extension bar assembly 60 may be provided as a pair of upper assembly 60A and lower assembly 60B that are provided in a form surrounding the other side of the outer circumferential surface of support pole P, corresponding to upper fixing bracket portion 50A and lower fixing bracket portion 50B that are provided in a form surrounding one side of the outer circumferential surface of support pole P.

[0050] 2A and 2B, the extension bar assembly 60 has a pair of front and rear horizontal bars 61A, 61B penetrating the left and right horizontal bars 63 and extending a predetermined length toward the upper fixing bracket portion 50A and the lower fixing bracket portion 50B provided on the support pole P, and the support pole fixing bolts (52, see FIG. 5C) inserted through the upper fixing bracket portion 50A and the lower fixing bracket portion 50B are fastened to bolt fastening holes 65 at the rear ends of the pair of front and rear horizontal bars 61A, 61B, respectively, to complete the connection to the support pole P. The front ends of the pair of front and rear horizontal bars 61A, 61B are fixed to the left and right horizontal bars 63 by an upper support bracket portion 80A (to be described later) as shown in FIG. a first pair of support bracket fastening bolts passing through the and , as described below Lower support bracket part 80B A second pair of penetrating This may be achieved by means of the support bracket fastening bolts 62.

[0051] As shown in Figures 2A and 2B, the inner surfaces of the left and right horizontal bars 63 facing the support pole P are provided with a slot-shaped gear panel installation groove (85, see Figure 6), and a clamping gear panel 67 having multiple gear teeth arranged in a "V" shape can be fixed in the gear panel installation groove 85 to clamp the outer surface of the support pole P and prevent it from slipping.

[0052] Here, the clamping gear panel 67 does not necessarily have to be formed in a "V" shape, and it is preferable that the clamping gear panel 67 has a shape that matches as closely as possible with the outer circumferential surface of the support pole P. When the clamping gear panel 67 is "V" shaped, it has the advantage that it can be applied to support poles P with various outer diameters.

[0053] The clamping gear panel 67 does not have to be provided only on the left and right horizontal bars 63, but when it is provided directly on the support pole P without the extension bar assembly 60, it can also be provided on the inner surfaces of the upper support bracket part 80A and the lower support bracket part 80B described later, as shown in Figure 6.

[0054] 6, after the clamping gear panel 67 is inserted into the gear panel installation groove 85, the outer end surface of the middle portion where no gear teeth are formed is configured to match the outer surfaces of the upper support bracket part 80A and the lower support bracket part 80B, and the clamping gear panel 67 can be fixed by the gear panel fixing screw 69 fastened to the screw fixing hole 87 formed adjacent to the upper or lower portion of the clamping gear panel 67. At this time, while the body part 69A of the gear panel fixing screw 69 is inserted and fastened into the screw fixing hole 87, the stepped surface of the head part 69B, which has a larger diameter than the body part 69A, overlaps with the outer end surface of the clamping gear panel 67 where no gear teeth are formed, thereby preventing the clamping gear panel 67 from coming off the gear panel installation groove 85.

[0055] Meanwhile, the front ends of the pair of front and rear horizontal bars 61A, 61B of the extension bar assembly 60 may be provided with an upper support bracket portion 80A and a lower support bracket portion 80B, as shown in FIGS. 3A and 3B.

[0056] As described above, the method of connecting the front ends of the pair of front and rear horizontal bars 61A, 61B to the upper support bracket portion 80A and the lower support bracket portion 80B is the same as the method of connecting the rear ends of the pair of front and rear horizontal bars 61A, 61B to the upper fixing bracket portion 50A and the lower fixing bracket portion 50B, except for whether the support pole fixing bolt 52 or the support bracket fastening bolt 62 is used, and therefore detailed explanation will be omitted.

[0057] The left and right ends of the upper support bracket portion 80A and the lower support bracket portion 80B can be firmly connected to each other via a pair of vertical support frames 70 arranged vertically, as shown in Figures 3A and 3B.

[0058] The vertical support frame 70 can simultaneously connect and fix the front ends of a pair of front and rear horizontal bars 61A, 61B, which are part of the upper assembly 60A and lower assembly 60B of the extension bar assembly 60, in the vertical direction.

[0059] Here, the vertical support frame 70 has a horizontal cross section that is roughly "L" shaped so as to simultaneously support the side end faces and rear end faces of the upper support bracket portion 80A and the lower support bracket portion 80B, and the portions that support the rear end faces of the upper support bracket portion 80A and the lower support bracket portion 80B can be supported by passing through the front ends of the pair of front and rear horizontal bars 61A, 61B described above.

[0060] In this way, the upper support bracket portion 80A and the lower support bracket portion 80B are provided at independent positions spaced apart in the vertical direction along the longitudinal direction of the support pole P, but the rectangular frame structure formed by the additional installation of a pair of vertical support frames 70 allows for a strong and stable connection to be maintained so that no play occurs in the left-right and front-back directions.

[0061] Therefore, by driving the tilting drive unit 100 and steering drive unit 200 described later, it is possible to prevent the antenna device A, which is a heavy body, from inducing mechanical backlash noise due to physical assembly tolerances when tilting in the forward / backward direction and steering in the left / right direction.

[0062] As shown in Figures 3A and 3B, the upper support bracket portion 80A and the lower support bracket portion 80B may be provided with an upper vertical axis mounting portion 81A and a lower vertical axis mounting portion 81B that protrude forward to provide two steering rotation points S1 and S2 required when steering the antenna device A.

[0063] The upper vertical shaft mounting portions 81A may be provided in pairs, each protruding upward and downward, with an empty space between them. The empty space between the pair of upper vertical shaft mounting portions 81A can be used to connect the steering shaft 240 of the steering drive unit 200, which will be described later.

[0064] The lower vertical shaft mounting portions 81B may also be provided as a pair of protruding portions, one above the other, with an empty space between them. The rear end of the mounting rotation block 400 (described later) can be inserted and connected to the empty space between the pair of lower vertical shaft mounting portions 81B.

[0065] More specifically, the upper vertical axis mounting portion 81A and the lower vertical axis mounting portion 81B provide two steering rotation points S1 and S2, as shown in Figures 4A and 4B, and can be configured so that the center of the steering shaft 240 of the steering drive unit 200 and the hinge connection point of the mounting rotation block 400 are positioned on the same vertical line in the up-down direction.

[0066] On the other hand, as shown in FIGS. 4A and 4B, the tilting drive unit 100 can be hingedly connected to the lower part of the steering drive unit 200 via a unit connecting hinge (117, see FIGS. 11A to 12 described later).

[0067] The steering drive unit 200 and the tilting drive unit 100 being hingedly connected means that the upper end of the antenna installation bracket 90, which is provided in front to mediate the installation of the antenna device A, is relatively fixed during tilting rotation, and the tilting drive unit 100 is also configured to tilt rotate within a predetermined angle range relative to the steering drive unit 200.

[0068] In addition, as shown in FIGS. 4A and 4B, the tilting drive unit 100 can be connected to the steering drive unit 200 and the antenna installation bracket 90 so as to have at least three tilting rotation points T1, T2, and T3.

[0069] The tilting rotation point indicated by "T1" (hereinafter abbreviated as "T1 rotation point") refers to the axial direction of the tilting shaft 140 in the configuration of the tilting drive unit 100, and is the rotation center point of the tilting link members 300A and 300B (described below) connected to it.

[0070] In addition, the tilting rotation point indicated by "T2" (hereinafter abbreviated as "T2 rotation point") may include the rotation path drawn by the other end of the tilting link members 300A, 300B, one end of which is connected to the T1 rotation point, and may also be the rotation radius drawn by the upper end of the antenna mounting bracket 90 connected thereto. Here, the rotation radius of the upper end of the antenna mounting bracket 90 may refer to the tilting path of the antenna device A.

[0071] On the other hand, the tilting rotation point indicated by "T3" (hereinafter abbreviated as "T3 rotation point") may be a hinge connection point by the unit connection hinge 117 between the tilting drive unit 100 and the steering drive unit 200. The unit connection hinge 117 may be configured to allow the tilting drive unit 100 to rotate freely relative to the steering drive unit 200.

[0072] Here, assuming that the steering drive unit 200 is a component that is fixed relatively to the upper vertical axis mounting portion 81A as described above, the tilting drive unit 100 may be a component that rotates relatively to the lower part of the steering drive unit 200.

[0073] When the upper ends of the tilting link members 300A and 300B tilt forward, the tilting drive unit 100 can rotate rearward a predetermined angle based on the T3 pivot point due to the load of the antenna device A, which is a heavy body connected thereto. In other words, when the upper ends of the antenna device A tilt forward due to the tilting link members 300A and 300B, the center of gravity of the antenna device A moves rearward, and to compensate for this center of gravity movement, the tilting drive unit 100 rotates relative to the steering drive unit 200 based on the T3 pivot point.

[0074] Here, the tilting drive unit 100 and the steering drive unit 200 do not necessarily have to be connected by only one pivot point, the T3 pivot point.

[0075] For example, although not shown, it is possible to add another link member type component of the same shape as the tilting link members 300A and 300B and hinge them to add a tilting rotation point to each end. However, when connecting the tilting drive unit 100 and the steering drive unit 200 with a link member type, it is necessary to provide a pair of components such as a hinge, which has the disadvantage of increasing the number of parts.

[0076] In the case of the antenna clamping device 1 according to one embodiment of the present invention, the tilting drive unit 100 and the steering drive unit 200 are hinged to each other using only a pair of unit connecting hinges 117 without adding any link member type components, which allows for an overall compact design of the product and has the advantage of reducing the number of parts.

[0077] Meanwhile, as shown in Figures 4A and 4B, the T3 pivot point is assumed to be located behind the T1 and T2 pivot points when the T1 and T2 pivot points are positioned on a vertically aligned straight line, assuming that the tilting link members 300A and 300B are not tilted. More preferably, the T3 pivot point may be designed to be located at least further forward than the two steering pivot points S1 and S2 positioned on a vertically aligned straight line. Hereinafter, the steering pivot point designated by S1 will be abbreviated as the "S1 pivot point," and the pivot point designated by S2 will be abbreviated as the "S2 pivot point."

[0078] Therefore, assuming that the tilting link members 300A, 300B are stopped at the position before being tilted, the T3 rotation point can be located behind the imaginary line connecting the T1 rotation point and the T2 rotation point, and forward of the two steering rotation points S1, S2.

[0079] Here, since antenna device A is a body of a certain weight, when adjusting the directionality by tilting antenna device A, mechanical backlash noise occurs due to the mechanical connection configuration of the connection point (T1 pivot point) of tilting link members 300A, 300B. If the T3 pivot point is close to the virtual line connecting the T1 pivot point and the T2 pivot point, the generation of the mechanical backlash noise increases. On the other hand, if the T3 pivot point coincides with the virtual line connecting the two steering rotation points S1, S2 or is located further rearward, the steering rotation angle can be limited to a certain range depending on the surrounding components, assuming that the protrusion lengths of the upper vertical shaft mounting portion 81A and the lower vertical shaft mounting portion 81B are the same.

[0080] Therefore, more preferably, assuming that the tilting link members 300A, 300B are stopped at the positions before being tilted, the T3 pivot point is set to a position rearward of the imaginary line connecting the T1 pivot point and the T2 pivot point and at a position that is the greatest distance away from the imaginary line connecting the two steering pivot points S1, S2, in which case the T3 pivot point may be set to a position that does not generate mechanical backlash noise. The cause of the above-mentioned mechanical backlash noise and the principle of preventing it will be explained in more detail later.

[0081] Meanwhile, as shown in Figures 1A to 4B, antenna device A receives tilting rotation and / or steering rotation driving force of tilting drive unit 100 and steering drive unit 200 via antenna installation bracket 90, and can be coupled so that the upper end tilts and rotates in the front-to-rear direction around an antenna tilting rotation point (T4, hereinafter abbreviated as "T4 rotation point") at the lower end, or the left and right ends steer and rotate in the front-to-rear direction around two steering rotation points S1 and S2.

[0082] More specifically, the antenna installation bracket 90 may have an upper end connected to the upper support bracket portion 80A at at least one point so as to be rotatable by steering via a pair of tilting link members 300A, 300B and a tilting drive unit 100 and a steering drive unit 200, and a lower end connected to the lower support bracket portion 80B at at least one point so as to be rotatable by steering.

[0083] As shown in FIGS. 3A and 3B, the antenna installation bracket 90 may include two mounting extensions 94 extending outward from a base bracket panel 91 formed in the shape of a rectangular panel.

[0084] A plurality of bolt through holes 95 are formed in the base bracket panel 91 and the mounting extension 94, which allows for more diverse formation positions of the plurality of bolt through holes 95 so that the antenna device A can be fastened to an appropriate position on the base bracket panel 91 depending on the size and shape of the antenna device A to be connected. Antenna fastening bolts (94, see FIG. 4A) pass through the plurality of bolt through holes 95 and are fastened to bolt fastening holes (not shown) formed on the back of the antenna device A, thereby allowing the antenna device A to be firmly attached to the antenna installation bracket 90.

[0085] In addition, the antenna installation bracket 90 may further include four diagonal mounting portions 92 integrally extending from each corner of the base bracket panel 91 in an outward diagonal direction, and each of the diagonal mounting portions 92 may have an additional bolt fastening hole 93 formed therein.

[0086] On the other hand, the antenna installation bracket 90 has antenna installation fastening holes 96 formed in multiple locations that penetrate in the front-to-rear direction, and the back of the antenna device A can be firmly connected via multiple antenna fixing screws 97 that penetrate and fasten the antenna installation fastening holes 96.

[0087] An upper horizontal bracket 98U may be fixed to the rear surfaces of the upper two of the four diagonal mounting portions 92, and a lower horizontal bracket 98D may be fixed to the rear surfaces of the lower two of the four diagonal mounting portions 92. In particular, the lower horizontal bracket 98D may be bolted to the additional bolt fastening holes 93 formed in the antenna installation bracket 90 via additional mounting bolts 98S that pass through it from front to back.

[0088] The upper horizontal bracket 98U serves to mediate hinge connection of the pair of tilting link members 300A, 300B to the base bracket panel 91 at T2 pivot points formed at the upper ends thereof. In particular, hinge holes 301, 302 for hinge connection may be formed at each end of the pair of tilting link members 300A, 300B corresponding to the T1 and T2 pivot points, respectively.

[0089] The lower horizontal bracket 98D also serves to mediate a hinge connection to the base bracket panel 91 at a T4 pivot point formed on the mounting pivot block 400.

[0090] The upper horizontal bracket 98U and the lower horizontal bracket 98D may be formed to be elongated in the left-right horizontal direction.

[0091] A pair of upper hinge connection ends 99U extend rearward from the upper horizontal bracket 98U and can be hingedly connected to the tilting link members 300A and 300B via link connection hinges 311 and 312 and hinge interposition holes 302 corresponding to the T2 rotation points of the tilting link members 300A and 300B.

[0092] A pair of lower hinge connection ends 98D-1 extend rearward from the lower horizontal bracket 98D and can be hingedly connected to the front end of the mounting pivot block 400 via a pair of block tilting hinges 440L and 440R (described later) at the T4 pivot point.

[0093] The hinge connection structure of the mounting pivot block 400 to the lower hinge connection end 99D of the lower horizontal bracket 98D will be described in more detail later, where the principle of isolating mechanical backlash noise will be explained.

[0094] The manner in which the antenna clamping device 1 according to the embodiment of the present invention having the above-described configuration is installed on the support pole P and its advantages will be briefly described as follows.

[0095] That is, as shown in Figures 5A to 5C, the antenna clamping device 1 according to the present invention can selectively attach the extension bar assembly 60 according to the surrounding conditions of the support pole P, and either tightly connect it to the support pole P, or move it a predetermined distance away from the support pole P to change the installation position of the antenna device A.

[0096] For example, as shown in Figures 5A and 5B, when the extension bar assembly 60 is not provided (see (a) of each drawing), the antenna device A is connected relatively closely to the support pole P, so that if there is no surrounding interference (other antenna devices, etc.), the antenna device A can be installed in a concentrated manner to minimize interference when adjusting its direction. When the extension bar assembly 60 is provided (see (b) of each drawing), the antenna device A can be installed in a dispersed manner, further separated by a predetermined distance (see drawing symbol "D") from the support pole P to prevent interference from surrounding interference (other antenna devices, etc.).

[0097] As shown in FIG. 5C, the extension bar assembly 60 may be connected to the support pole P in such a manner that a pair of front and rear horizontal bars 61A, 61B penetrate the left and right horizontal bars 63 and extend a predetermined length to the upper fixing bracket portion 50A and the lower fixing bracket portion 50B, and the support pole fixing bolts 52 inserted through from the upper fixing bracket portion 50A and the lower fixing bracket portion 50B are fastened to the bolt fastening holes 65 at the tip ends of the pair of front and rear horizontal bars 61A, 61B, respectively.

[0098] Figure 7 is an exploded perspective view of the configuration of Figures 4A and 4B, showing the lower end of the antenna installation bracket, the support pole side installation bracket part, and the mounting rotation block that mediates the connection. Figures 8A and 8B are exploded perspective views of the front and rear parts of the mounting rotation block in the configuration of Figure 7. Figure 9 is a partial vertical cross-sectional view of the connection part in the configuration of Figures 8A and 8B, showing the function of the backlash blocking bush.

[0099] The clamping device for an antenna 1 according to one embodiment of the present invention may further include a backlash reduction design shape to prevent mechanical backlash noise that may occur due to eccentric load of the antenna device A with respect to the direction of gravity when adjusting the direction of the antenna device A by tilting rotation and / or steering rotation, which is a relatively heavy body.

[0100] In particular, since the antenna clamping device 1 according to one embodiment of the present invention is applied in a scattered manner to multiple connection points related to tilting rotation or steering rotation, the backlash reduction design shape of these parts will be described in more detail.

[0101] As shown in Figures 7 to 9, an antenna clamping device 1 according to one embodiment of the present invention hinges the antenna device A at two points to two steering rotation points S1 and S2 provided in the same vertical direction on the top and bottom to enable smooth steering rotation of the antenna device A, and also hinges the antenna device A to form four tilting rotation points T1, T2, T3, and T4 provided in different horizontal directions on the left and right to enable smooth tilting rotation of the antenna device A.

[0102] Here, of the two steering rotation points S1 and S2, the upper rotation point S1 serves as a hinge point that steers and rotates the steering drive unit 200 itself (described later) in the left-right direction, and the lower rotation point S2 of the two steering rotation points S1 and S2 essentially serves as a hinge point that steers and rotates the lower end of the antenna installation bracket 90 to which the antenna device A is connected in the left-right direction, thereby achieving more stable steering rotation operation of the antenna device A.

[0103] More specifically, for hinge connection with the steering drive unit 200 via the upper pivot point S1, the pair of upper vertical shaft mounting portions 81A are fitted and fastened with steering hinge connecting bolts 82 at the top and bottom in the vertical direction, respectively, so that they can be fastened to both ends of the steering shaft (240, see FIG. 10A). The connection of the steering hinge connecting bolts 82 to the steering shaft 240 will be described in more detail later.

[0104] On the other hand, among the four tilting rotation points T1, T2, T3, and T4, the T1 rotation point and the T2 rotation point serve as hinge points (fixing points and rotation points) that rotate the upper end of the antenna installation bracket 90, which mediates the connection of the antenna device A through the rotational movement of the tilting link members 300A and 300B, as described above.

[0105] The T3 pivot point then becomes the hinge point for relative rotation between the tilting drive unit 100 and the steering drive unit 200, as described above.

[0106] Finally, the T4 pivot point is a hinge point that rotatably supports the lower end of the antenna mounting bracket 90 relative to the mounting pivot block 400, as described above, to enable tilting and pivoting movement of the antenna mounting bracket 90, which mediates the coupling of the antenna device A.

[0107] More specifically, referring to Figures 8A and 8B, the mounting pivot block 400 includes a pivot block body 410 whose rear end is hingedly connected to the lower support bracket part 80B and whose front end is hingedly connected to the rear lower end of the antenna installation bracket 90 (i.e., the lower horizontal bracket 98D), a steering hinge cover 420 coupled to the side of the rear end of the pivot block body 410, and a tilting hinge cover 430 coupled to the lower surface of the front end of the pivot block body 410.

[0108] In addition, the mounting pivot block 400 may further include steering hinge installation grooves 425A and 425B formed in a groove shape that open toward the upper and lower surfaces of the pivot block body 410 and the steering hinge cover 420, respectively, and an upper steering hinge 450U-1 and a lower steering hinge 450D-1 that are interposed in the upper and lower steering hinge installation grooves 425A and 425B, respectively, via an upper hinge installation hole 82h-U and a lower hinge installation hole 82h-D formed in the lower vertical shaft mounting portion 81B to support steering rotation.

[0109] Here, the upper and lower steering hinge installation grooves 425A, 425B may be formed by groove processing so that the inner surface has a generally circular cross section when the steering hinge cover 420 is coupled to the rotating block body 410, and the diameter gradually increases toward the upper and lower surfaces. Therefore, the upper and lower steering hinge installation grooves 425A, 425B may have a trapezoidal vertical cross section in which the length of the side of the portion corresponding to the inner surface is relatively shorter than the length of the side of the portion corresponding to the outer end.

[0110] In addition, it is preferable that the upper steering hinge 450U-1 and the lower steering hinge 450D-1 are formed so that the insertion portions inserted into the above-mentioned upper and lower steering hinge installation grooves 425A and 425B, except for the portions fastened to the upper hinge installation hole 82h-U and the lower hinge installation hole 82h-D, correspond to the machined groove shapes of the upper and lower steering hinge installation grooves 425A and 425B, and are molded to match.

[0111] Here, an upper steering hinge bush 450U-2 and a lower steering hinge bush 450D-2 may be interposed between the upper steering hinge 450U-1 and the lower steering hinge 450D-1 and between the upper and lower steering hinge installation grooves 425A and 425B, respectively.

[0112] Meanwhile, the mounting pivot block 400 may further include one-side and other-side tilting hinge installation grooves 435A, 435B formed in a groove shape that opens toward one side and the other side of the pivot block body 410 and the tilting hinge cover 430, respectively, and one-side tilting hinge 440L-1 and other-side tilting hinge 440R-1 that are interposed in the one-side and other-side tilting hinge installation grooves 435A, 435B, respectively, via lower hinge holes 98D-1h formed in a pair of lower hinge connecting ends 98D-1 of the lower horizontal bracket 98D to support tilting rotation.

[0113] Here, the tilting hinge installation grooves 435A and 435B on one side and the other side may be formed by groove processing so that the inner surface has a generally circular cross section when the tilting hinge cover 430 is coupled to the pivot block body 410, and the diameter gradually increases toward the one side and the other side, respectively. Therefore, the tilting hinge installation grooves 435A and 435B on one side and the other side may have a trapezoidal vertical cross section in which the length of the side of the portion corresponding to the inner surface is relatively shorter than the length of the side of the portion corresponding to the outer end.

[0114] It is preferable that the one-side tilting hinge 440L-1 and the other-side tilting hinge 440R-1 are formed so that the insertion portions inserted into the above-mentioned one-side and other-side tilting hinge installation grooves 435A, 435B, except for the portions fastened to the lower hinge holes 98D-1h on one side and the other side, correspond to the processed groove shapes of the one-side and other-side tilting hinge installation grooves 435A, 435B, and are molded to match.

[0115] Here, one-side tilting hinge bush 440L-2 and the other-side tilting hinge bush 440R-2 may be interposed between one-side tilting hinge 440L-1 and the other-side tilting hinge 440R-1 and between one-side and the other-side hinge installation grooves 435A and 435B, respectively.

[0116] Generally, a bush is a frictional wear component that is placed between two objects moving relative to one another to guide the connection between the two objects or support the movement characteristics between the two objects. In particular, when a bush is used to support a rotating object relative to a fixed object, a rectangular groove with an open side is typically machined into the fixed object, a portion of the rotating object is inserted into the groove, and a bushing of a shape corresponding to the groove is manufactured and placed at the insertion portion of the rotating object to prevent the rotating object from directly contacting the inner surface of the groove of the fixed object during movement. For this reason, bushings are generally formed in a hollow cylindrical shape with one end closed.

[0117] However, a bushing with the above-described shape (i.e., a groove with a rectangular vertical cross section) has one end closed, which makes it difficult to accommodate the tolerance in the direction of the rotation axis when assembly tolerances occur between the groove of the fixed object and the insertion portion of the rotating object.

[0118] In addition, in order to ensure smooth assembly between parts, it is common to always leave an assembly tolerance when manufacturing parts. However, if a bush provided to support tilting and steering rotation movements for adjusting the directionality of antenna device A, which is a certain weight body, as in the present invention, is manufactured as the general type described above with a rectangular (rectangular) groove shape and with a certain assembly tolerance, there is a risk that the bush itself may be crushed and damaged by the eccentric loads specific to tilting and steering rotations, or that mechanical backlash noise may occur.

[0119] In one embodiment of the present invention, the mounting pivot block 400 may further include a backlash reduction design to prevent the occurrence of the mechanical backlash noise described above.

[0120] More specifically, the backlash reduction design shape is such that the shapes of the upper and lower steering hinge installation grooves 425A, 425B related to the steering rotation operation of antenna device A and the upper steering hinge bush 450U-2 and lower steering hinge bush 450D-2 respectively interposed in the upper steering hinge 450U-1 and lower steering hinge 450D-1 are designed to have trapezoidal vertical cross sections, and the shapes of the one-side and other-side tilting hinge installation grooves 435A, 435B related to the tilting rotation operation of antenna device A and the one-side tilting hinge bush 440L-2 and other-side tilting hinge bush 440R-2 respectively interposed in the one-side tilting hinge 440L-1 and other-side tilting hinge 440R-1 are designed to have trapezoidal horizontal cross sections.

[0121] As described above, the antenna device A has a certain weight, and the principle of minimizing the mechanical backlash noise phenomenon caused by the eccentric load due to the specific steering and tilting operations performed by adjusting the directionality of the antenna device A will be briefly explained with reference to FIG. 9 as follows.

[0122] For reference, the above-mentioned mechanical backlash noise phenomenon is understood to occur at steering rotation points S1 and S2, which are provided to support the load in the front-to-rear direction, which is the tilting direction of antenna device A, a predetermined weight body, when antenna device A is tilted and rotated, and conversely, it is understood to occur at tilting rotation points T1, T2, T3, and T4, which are provided to support the centrifugal load in the left-to-right direction, which is the steering direction of antenna device A, a predetermined weight body, when antenna device A is rotated and rotated.

[0123] Referring to FIG. 9, when the antenna device A of the mounting rotation block 400 is tilted and rotated in the forward and backward directions, the load of the antenna device A, which is a heavy body, acts to tilt it forward and become eccentric on the imaginary vertical line formed by the steering rotation points S1 and S2 of the lower vertical shaft mounting part 81B.

[0124] In the antenna clamping device 1 according to one embodiment of the present invention, the upper and lower steering hinge installation grooves 425A, 425B, the insertion portions of the upper steering hinge 450U-1 and lower steering hinge 450D-1 inserted therein, and the shapes of the upper steering hinge bush 450U-2 and lower steering hinge bush 450D-2 interposed between the two are formed to have the trapezoidal cross section described above, so as to be able to accommodate the eccentric load acting when adjusting the directionality of the antenna device A.

[0125] Therefore, even if there is an assembly tolerance between the upper steering hinge 450U-1 and the lower steering hinge 450D-1, which are inserted and installed in the upper and lower steering hinge installation grooves 425A, 425B, and the upper steering hinge bush 450U-2 and the lower steering hinge bush 450D-2, which are respectively interposed between the two, it is possible to prevent the problem of loss of rotation support function caused by each bush 450U-2, 450D-2 being crushed into an oval shape, and it has the advantage that when supporting an eccentric load, the rotation support function can be maintained by deforming along the surface of the trapezoidal cross section that is inclined with respect to the steering rotation points S1, S2.

[0126] Furthermore, the eccentric load during tilting of antenna device A coincides with the upper and lower steering hinge installation grooves 425A, 425B, and the inclined surfaces of upper steering hinge 450U-1 and lower steering hinge 450D-1 and upper steering hinge bush 450U-2 and lower steering hinge bush 450D-2 interposed therebetween, which has the advantage of being able to prevent mechanical backlash noise from occurring during tilting.

[0127] 10A and 10B are exploded perspective views of the left and right sides showing a tilting drive unit and a steering drive unit in the configuration of an antenna clamping device according to one embodiment of the present invention.

[0128] As shown in Figures 10A and 10B, an antenna clamping device 1 according to one embodiment of the present invention may include a tilting drive unit 100 and a steering drive unit 200 coupled to the front of an extension bar assembly 60, an upper support bracket part 80A, or a lower support bracket part 80B, which mediates attachment to a support pole P, for adjusting the directionality of an antenna device A.

[0129] The tilting drive unit 100 may include a tilting drive housing 110 having an internal space 110S in which the tilting drive unit 130 described later is built, and a tilting drive housing cover 120 that covers one open side of the tilting drive housing 110.

[0130] The tilting drive housing cover 120 can be attached to one open side end of the tilting drive housing 110 by a plurality of cover assembly screws 125 .

[0131] The tilting drive unit housing 110 and the tilting drive unit housing cover 120 may each have a tilting shaft connection hole 111h, 121h formed therein, which is connected to the internal space 110S and exposes both left and right ends of the tilting shaft 140, which is one of the components of the tilting drive unit 130 described later, to the outside.

[0132] Both ends of the tilting shaft 140 exposed to the outside through the tilting shaft connection holes 111h and 121h are connected to the tilting link members 300A and 300B, and the tilting driving force transmitted from the tilting drive motor 150 described later can be transmitted to the tilting link members 300A and 300B.

[0133] Meanwhile, the steering drive unit 200 may include a steering lower housing 210 on which the steering drive unit 230 described later is mounted and coupled, and a steering upper housing 220 that covers and shields the steering drive unit 230 mounted and coupled to the steering lower housing 210.

[0134] The steering upper housing 220 can be connected to the upper edge of the steering lower housing 210 by a plurality of housing assembly screws 225, which are disposed over the upper side of the steering lower housing 210.

[0135] The upper steering housing 220 and the lower steering housing 210 may be formed with a steering shaft connection hole (the lower side is not shown, 221h) that is connected to a space (not shown in the drawing) in which the steering drive unit 230 installed inside is installed, and that exposes the upper and lower ends of the steering shaft 240, which is one of the components of the steering drive unit 230 described later, to the outside.

[0136] Both ends of the steering shaft 240 exposed to the outside through a steering shaft connecting hole (221h, not shown) are connected to a steering hinge connecting bolt 82 provided on the upper vertical shaft mounting part 81A, and the steering drive unit 200 itself can be rotated by the steering driving force transmitted from the steering drive motor 250 described later.

[0137] 11A and 11B are exploded perspective views of one side and the other side showing the connection relationship between the tilting drive unit, steering drive unit, and tilting link member in the configuration of an antenna clamping device according to one embodiment of the present invention, and FIG. 12 is an exploded perspective view of a detail of FIG. 11A.

[0138] On the other hand, the tilting drive unit 100 and the steering drive unit 200 can be hingedly connected via unit connecting hinges 117 at hinge center points corresponding to the T3 rotation point, as shown in FIGS. 10A and 10B.

[0139] To this end, hinge through-holes 113 and 123 are formed at the left and right sides of the upper end of the tilting drive unit housing 110 and the upper end of the tilting drive unit housing cover 120, respectively, and hinge through-holes 114 and 124 are formed at each of the hinge through-holes 113 and 123 so that a pair of unit connecting hinges 117 can be fastened thereto. Hinge fastening ends 213 are formed at the left and right sides of the lower end of the steering lower housing 210, respectively, and hinge fastening holes 214 may be formed at each of the hinge fastening ends 213 so that the unit connecting hinges 117 passing through the hinge through-holes 114 and 124 of the hinge through-holes 113 and 123 can be fastened thereto.

[0140] On the other hand, the tilting shaft 140 and the steering shaft 240 receive driving force from the tilting drive motor 150 and the steering drive motor 250, respectively, and function as a driving force transmission unit that enables the tilting rotation drive and steering rotation drive of the tilting drive unit 100 and the steering drive unit 200, respectively, and at the same time, are components that also play a role in supporting the load of the antenna device A, which is a heavy body, in the tilting direction and the steering direction, respectively, during the tilting rotation and steering rotation operations of the antenna device A.

[0141] Therefore, the clamping device for an antenna 1 according to an embodiment of the present invention may further include a design shape for reducing backlash at the power connection point between the tilting shaft 140 and the steering shaft 240.

[0142] More specifically, the design shape for reducing backlash can be realized as follows.

[0143] That is, the tilting shaft 140 and the steering shaft 240 may also generate mechanical backlash noise when adjusting the directionality of the antenna device A. In order to minimize the generation of such mechanical backlash noise, the clamping device for an antenna 1 according to one embodiment of the present invention may further include one-side mold mating portions 143, 243 and other-side mold mating portions (303, 83; see FIG. 4A for reference number "83") in which at least a portion of the ends of the tilting shaft 140 and the steering shaft 240 and the tilting link members 300A, 300B connected thereto and the vertical axis mounting portions 81A, 81B have trapezoidal cross sections that are inclined with respect to the respective rotation axis directions.

[0144] More specifically, one-side mold mating portions 143, in which tooth flanks and tooth valleys that are engaged in the circumferential direction are repeated, may be formed on both left and right end surfaces corresponding to the T1 rotation point of the tilting shaft 140, except for the center portion. A bolt fastening hole 145, into which a link assembly bolt 305 for bolting and assembling the tilting link members 300A and 300B is inserted and fastened, may be formed in the center portion of the one-side mold mating portion 143.

[0145] In addition, the inner surfaces of the tilting link members 300A, 300B corresponding to the T1 pivot points may be formed with other-side die mating portions 303, in which tooth surfaces and tooth valleys that are engaged in the circumferential direction are repeated, except for the central portions. A bolt through-hole 301 through which a link assembly bolt 305 passes may be formed in the central portion of the other-side die mating portion 303.

[0146] Meanwhile, a one-side mold mating portion 243 in which tooth flanks and tooth valleys that are engaged in the circumferential direction are repeated may be formed on the upper end surface and the lower end surface corresponding to the S1 and S2 pivot points of the steering shaft 240, except for the central portion. A bolt fastening hole 245 into which a hinge connecting bolt 82 for bolting assembly to the pair of upper vertical shaft mounting portions 81A is inserted and fastened may be formed in the central portion of the one-side mold mating portion 243.

[0147] In addition, the lower and upper surface portions of the pair of upper vertical shaft mounting portions 81A corresponding to the S1 and S2 pivot points may be formed with other-side die mating portions 83, in which tooth surfaces and tooth valleys that engage in the circumferential direction are repeated, except for the central portions. A bolt through-hole (not shown in the drawing) through which the above-mentioned hinge connecting bolt 82 passes may be formed in the central portion of the other-side die mating portion 83.

[0148] Here, the tooth surfaces and tooth valleys formed on the one-side mating portions 143, 243 and the other-side mating portions 303, 83 are firmly mated (engaged) with each other by the link assembly bolt 305 and the hinge connecting bolt 82, enabling the transmission of driving forces in the tilting rotation direction and the steering rotation direction, and at the same time, the tooth surfaces of the mating portions and the trapezoidal cross section, which is an inclined surface of the tooth surfaces, can prevent the occurrence of mechanical backlash noise in advance.

[0149] The mechanical backlash noise generation blocking feature due to the shape and structure of the one-side mold mating parts 143, 243 and the other-side mold mating parts 303, 83 is not only applicable to the connection structure between the tilting link members 300A, 300B and the tilting shaft 140 and the connection structure between the upper vertical shaft mounting part 81A and the steering shaft 240. That is, as will be described in more detail later, the mechanical backlash noise generation blocking feature can also be applied as it is to the installation structure of the tilting drive motor 150 of the tilting drive unit 100 and the steering drive motor 250 of the steering drive unit 200.

[0150] 13A and 13B are exploded perspective views of one side and the other side showing a tilting drive unit in the configuration of a clamping device for an antenna according to one embodiment of the present invention.

[0151] As shown in Figures 13A and 13B, the tilting drive unit 100 may further include an electrically driven tilting drive motor 150 and a transmission gear assembly 160 that receives driving force from the tilting drive motor 150 and transmits it to the tilting shaft 140.

[0152] The tilting drive motor 150 and the transmission gear assembly 160 can be stably installed in the internal space 110S of the tilting drive housing 110 via the unit installation frame 180.

[0153] In particular, the transmission gear assembly 160 can be physically separated from other components provided in the internal space 110S by a gearbox housing 192, which is connected to the upper surface of the gearbox base 191 via a plurality of box fixing bolts 195 so as to cover the top of the gearbox base 191, after which multiple gears are stably mounted on the upper surface provided by the gearbox base 191.

[0154] Here, the transmission gear assembly 160 may include a first transmission gear 161 as an input gear configured to mesh with a motor worm gear 151 connected to the rotation shaft of the tilting drive motor 150, a second transmission gear 162 configured to mesh with the first transmission gear 161, a third transmission gear 163 configured to mesh with the second transmission gear 162, a fourth transmission gear 164 configured to mesh with the third transmission gear 163, and a fifth transmission gear 170 as an output gear configured to mesh with the fourth transmission gear 164.

[0155] The first to fifth transmission gears 161 to 164, 170 are formed as two-stage gears each having a different diameter so that the meshing portions of the input and output parts are different in terms of the power transmission order, and all five transmission gears 161 to 164, 170 are provided with different gear meshing ratios, so that the power can be converted into an appropriate reduction force and reduction ratio corresponding to the usage capacity of the tilting drive motor 150 and transmitted to the tilting shaft 140.

[0156] In particular, the first transmission gear 161 functions as an input gear, and since the gear connected to the rotating shaft of the tilting drive motor 150 is the motor worm gear 151, which is a worm gear type, it is preferable that at least one of the two-stage gears of the first transmission gear 161 be a worm wheel gear type gear that can easily mesh with a worm gear, and the fifth transmission gear 170 functions as an output gear, and since the gear connected to the outer circumferential surface of the tilting shaft 140 is the tilting shaft worm wheel gear 141, which is a worm wheel gear type, as will be described later, it is preferable that at least one of the two-stage gears of the fifth transmission gear 170 be a worm gear type gear that can easily mesh with a worm wheel gear.

[0157] The tilting shaft worm wheel gear 141 is meshed with rack gear teeth 171 formed on the outer circumferential surface of a fifth transmission gear 170 among the five transmission gears, thereby receiving power.

[0158] Here, the tilting shaft 140 is arranged horizontally left and right in the internal space 110S within the tilting drive unit housing 110 to smoothly transmit driving force by mutually mating the one-side mold mating portion 143 and the other-side mold mating portion 303 with respect to the pair of tilting link members 300A, 300B, the transmission gear assembly 160 is arranged so as to have a rotation axis that is generally vertical, and the tilting drive motor 150 may be arranged horizontally left and right so as to have a rotation axis that is parallel to the tilting shaft 140.

[0159] In addition, a motor control board 185 may be provided in the rear part of the internal space 110S of the tilting drive unit housing 110 with a board fixing bracket 186 interposed therebetween.

[0160] Meanwhile, a tilting unit damper (not shown) may be further provided between the tilting drive motor 150 and the inner surface of the tilting drive unit housing 110. The tilting unit damper serves to prevent the occurrence of mechanical backlash noise by damping the operational reaction force transmitted inversely from the antenna device A, which is a heavy body, due to the tilting drive of the tilting drive motor 150. Hereinafter, the tilting unit damper will be described in more detail in the description of the steering damper 500, since its configuration and operation effects are the same as those of the steering damper 500, which will be described later.

[0161] FIG. 14 is an exploded perspective view of a steering drive unit in the configuration of an antenna clamping device according to one embodiment of the present invention, FIG. 15 is a perspective view showing a transmission gear assembly in the configuration of FIG. 14 with the gear housing removed, and FIG. 16 is a plan view of the configuration of FIG. 14 with the steering unit upper housing removed.

[0162] As shown in Figures 14 to 16, the steering drive unit 200 may further include an electrically driven steering drive motor 250 and a transmission gear assembly 260 that receives driving force from the steering drive motor 250 and transmits it to the steering shaft 240.

[0163] The steering drive motor 250 and the transmission gear assembly 260 can be stably installed in the internal space between the steering lower housing 210 and the steering upper housing 220 via a unit installation frame (not shown).

[0164] In particular, the transmission gear assembly 260 has multiple gears axially stably installed on the side surface provided by the gearbox base 291 arranged in the vertical direction, and can be physically partitioned from other components provided in the internal space by the gearbox housing 292 which is connected to the gearbox base 291 via multiple box fixing bolts 295 so as to cover the side surface of the gearbox base 291.

[0165] Here, the components of the transmission gear assembly 260 (i.e., the first transmission gear to the fifth transmission gear 261 to 264, 270 and the motor worm gear 251) and the driving force transmission mechanism for the steering shaft 240 are essentially the same as the transmission gear assembly 160 and the driving force transmission mechanism for the tilting shaft 140 described in the tilting drive unit 100, except for the direction, so detailed explanations will be omitted.

[0166] Meanwhile, a steering damper 500 designed to reduce backlash may be further provided between the steering drive motor 250 and the inner surface of the steering upper housing 220. The steering damper 500 serves to prevent mechanical backlash noise by attenuating the operating reaction force transmitted inversely from the antenna device A, which is a heavy body, due to the steering drive of the steering drive motor 250.

[0167] More specifically, as shown in Figures 14 and 15, the steering damper 500 may be disposed between the upper end of the steering drive motor 250, which is opposite to the lower end to which the rotating shaft is connected, and the inner surface of the steering upper housing 220.

[0168] The steering damper 500 may include an installation gasket 510 interposed at the lower end of the steering drive motor 250, a lower damper 520 fixed to the installation protrusion 252 of the steering drive motor 250 that passes through the through-hole 510h of the installation gasket 510, and an upper damper 530 having a lower end molded to overlap a portion of the upper end of the lower damper 520.

[0169] The lower damper 520 may be formed so that the tooth surface (see reference numeral "521") and the tooth valley (see reference numeral "522") are repeated in the circumferential direction, and the portion forming the tooth surface 521 may be molded so as to overlap with a portion of the upper damper 530.

[0170] The upper damper 530 has a through hole 530h formed on its upper surface, through which a fixing protrusion (not shown) formed on the inner surface of the steering upper housing 220 passes and is fastened, and a tooth surface (see reference numeral "531") and a tooth valley (see reference numeral "532") are formed on its lower surface so as to be repeated in the circumferential direction, and the portion forming the tooth surface 531 may be inserted into the tooth valley 522 portion of the lower damper 520 and molded.

[0171] The steering damper 500 having such a configuration plays a role in preventing the occurrence of mechanical backlash noise of the steering drive motor 250 by damping the eccentric load of the antenna device A, which is a heavy body, when adjusting the tilting rotation in the forward / backward direction by tilting rotation of the antenna device A, and when adjusting the directionality in the left / right direction by steering rotation. It is preferable to understand this as an effect that can be applied as it is to the case of a tilting damper (not shown), the specific description of which is omitted.

[0172] As described above, the antenna clamping device 1 according to one embodiment of the present invention has technical features for minimizing or preventing the occurrence of mechanical backlash noise that may occur when adjusting the directionality of the antenna device A, which is a heavy body, by: 1) effectively designing and adapting the position of the T3 tilting rotation point, which is directly related to the tilting rotation operation; 2) modifying and adapting the shape design of the components related to each hinge of the mounting rotation block 400, which mediates the installation of the antenna installation bracket 90 to the lower vertical axis mounting part 81B; 3) modifying and adapting the design of the peripheral components connected to the tilting shaft 140 and the steering shaft 240; and 4) modifying and adapting the design of the connecting parts of the tilting drive motor 150 and the steering drive motor 250.

[0173] In addition, as shown in FIG. 16, in the antenna clamping device 1 according to one embodiment of the present invention, assuming that a tilting force acts in the front-to-rear direction (FR) when the antenna device A performs a tilting rotation operation, it is preferable that the axial direction E of the worm gear 271 of the fifth transmission gear 270, which is configured to mesh with the worm wheel gear 241 of the steering shaft 240, is configured to be slightly inclined rearward on one side or the other side from the horizontal direction.

[0174] When the worm wheel gear 241 of the steering shaft 240 and the worm gear 271 of the fifth transmission gear 270 are meshed perpendicular to the tilting direction in the front-rear direction (FR), there is an advantage in that mechanical backlash noise is reduced during the steering rotation operation of the antenna device A, but the effect of reducing mechanical backlash noise during the tilting rotation operation of the antenna device A may be reduced.

[0175] FIG. 17 is a perspective view showing how the direction of an antenna device is set by tilting and / or steering using an antenna clamping device according to one embodiment of the present invention.

[0176] Figure 17(a) shows the antenna device A mounted on a support pole P via an antenna clamping device 1 according to one embodiment of the present invention, in a mounted state on the support pole P before directional adjustment is performed by tilting rotation and steering rotation.

[0177] Here, as shown in (b) of Figure 17, if the directionality adjustment can be completed only by the tilting rotation operation of the antenna device A, the user can operate the tilting drive motor 150 of the tilting drive unit 100 to perform tilting rotation.

[0178] Furthermore, as shown in (c) of Figure 17, if the directionality adjustment can be completed only by rotating the steering of antenna device A, the user can operate the steering drive motor 250 of the steering drive unit 200 to rotate the steering.

[0179] Then, as shown in (d) of Figure 17, when tilting rotation and steering rotation operations of antenna device A are required simultaneously to adjust the directionality, the user can operate the tilting drive motor 150 of the tilting drive unit 100 and the steering drive motor 250 of the steering drive unit 200 for a predetermined time to adjust the directionality of antenna device A to the desired direction.

[0180] An antenna clamping device 1 according to one embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, it goes without saying that the present invention is not limited to the above-described embodiment, and various modifications and equivalent implementations are possible by those skilled in the art. Therefore, the true scope of the present invention is defined by the claims that follow. [Industrial Applicability]

[0181] The present invention provides an antenna clamping device that can tilt and rotate an antenna device up and down while simultaneously steering and rotating it left and right, ensuring a maximum rotation range in each direction, and that can selectively include an extension bar to suit the number of antenna devices to be installed on a support pole and the installation space, and that can block the generation of mechanical backlash noise from each connection part that allows tilting and steering rotation when adjusting the antenna direction including tilting and steering rotation of a relatively heavy antenna device, and that can install antenna devices in a concentrated manner to form two steering rotation points based on the antenna installation bracket, allowing for a compact product design. [Explanation of symbols]

[0182] P: Support pole, A: Antenna equipment 1: Antenna clamping device, 50A: Upper fixing bracket part 50B: Lower fixing bracket part, 60: Extension bar assembly 61A, 61B: Front and rear horizontal bars, 63: Left and right horizontal bars 65: Bolt fastening hole, 67: Clamping gear panel 69: Gear panel fixing screw, 70: Vertical support frame 80A: Upper support bracket part, 80B: Lower support bracket part 81A: Upper vertical axis mounting part, 81B: Lower vertical axis mounting part 82: Steering hinge connecting bolt, 83: Other side mold mating part 90: Antenna installation bracket, 91: Base bracket panel 92: Diagonal mounting part, 93: Additional bolt fastening hole 94: Mounting extension, 95: Multiple bolt holes 96: Antenna installation fastening hole, 97: Antenna fixing screw 98U: Upper horizontal bracket, 98D: Lower horizontal bracket 99U: Upper hinge connection end, 99D: Lower hinge connection end 100: tilting drive unit, 110: tilting drive housing 120: tilting drive unit housing cover, 130: tilting drive unit 140: tilting shaft, 143: one-side mold mating part 145: Bolt fastening hole, 150: Tilting drive motor 160: Transmission gear assembly, 180: Unit installation frame 200: Steering drive unit, 210: Steering lower housing 220: Steering upper housing, 230: Steering drive unit 240: Steering shaft, 243: One-side mold mating part 245: Bolt fastening hole, 250: Steering drive motor 260: Transmission gear assembly, 300A, 300B: Tilting link members 303: Other side mold mating part, 305: Link assembly bolt 400: Mounting pivot block, 410: Pivot block body 420: Steering hinge cover, 425A, 425B: Steering hinge installation groove 435A, 435B: Tilting hinge installation groove, 440L-1: One-side tilting hinge 440R-1: Tilting hinge on the other side, 440L-2: Tilting hinge bush on one side 440R-2: Other side tilting hinge bush, 450U-1: Upper steering hinge 450D-1: Lower steering hinge, 450U-2: Upper steering hinge bush 450D-2: Lower steering hinge bush, 500: Steering damper 510: Installation gasket, 520: Lower damper 530: Upper damper

Claims

1. a support pole installation bracket portion provided on the support pole; a steering drive unit connected to the support pole installation bracket and driven to steer the antenna device; a tilting drive unit connected to the steering drive unit and driven to tilt and rotate the antenna device; an antenna installation bracket connected to the tilting drive unit via a pair of tilting link members, and having the antenna device installed in front of it; an upper end of the antenna installation bracket is connected to the support pole installation bracket portion at at least one point via the pair of tilting link members, the tilting drive unit, and the steering drive unit so as to be rotatable by steering, and a lower end of the antenna installation bracket is connected to the support pole installation bracket portion at at least one point so as to be rotatable by steering, When a hinge connection point at one end of the tilting link member to the tilting drive unit is defined as a T1 pivot point, a hinge connection point at the other end of the tilting link member to the antenna installation bracket is defined as a T2 pivot point, and a hinge connection point between the tilting drive unit and the steering drive unit is defined as a T3 pivot point, The clamping device for an antenna, wherein the T3 pivot point is disposed behind an imaginary line connecting the T1 pivot point and the T2 pivot point before the antenna device is tilted.

2. The support pole installation bracket portion is a fixing bracket portion provided on the upper and lower sides of the support pole to mediate installation of the antenna device on the support pole; 2. The antenna clamping device according to claim 1, further comprising: a support bracket portion fixedly installed on the support pole so as to correspond to the fixed bracket portion.

3. the fixed bracket portion includes an upper fixed bracket portion provided on the support pole, and a lower fixed bracket portion provided on the support pole and below the upper fixed bracket portion, 3. The antenna clamping device of claim 2, wherein the support bracket portion includes an upper support bracket portion fixedly installed on the support pole so as to correspond to the upper fixed bracket portion, and a lower support bracket portion fixedly installed on the support pole so as to correspond to the lower fixed bracket portion.

4. 4. The antenna clamping device of claim 3, wherein the antenna mounting bracket has an upper end hinged to the upper support bracket portion and a lower end hinged to the lower support bracket portion.

5. the upper support bracket portion has an S1 pivot point which is a hinge connection point with the steering drive unit, 4. The antenna clamping device according to claim 3, wherein the lower support bracket portion has an S2 pivot point which is a hinge connection point with the antenna installation bracket.

6. 6. The antenna clamping device of claim 5, wherein the T3 pivot point is located forward of an imaginary line connecting the S1 pivot point and the S2 pivot point.

7. 6. The antenna clamping device according to claim 5, wherein the S1 pivot point and the S2 pivot point are arranged coaxially above and below.

8. 6. The antenna clamping device according to claim 5, wherein the tilting drive unit is hingedly connected to the steering drive unit at the T3 pivot point via a unit connecting hinge so as to be relatively freely rotatable with respect to the steering drive unit.

9. The antenna installation bracket includes a base bracket panel formed in a panel shape, an upper horizontal bracket and a lower horizontal bracket fixed to a rear portion of the base bracket panel, 6. The antenna clamping device according to claim 5, wherein the upper and lower horizontal brackets are connected to the upper and lower support bracket portions provided at corresponding heights, respectively.

10. the steering drive unit is hingedly connected to the upper support bracket portion to have the S1 pivot point; The steering drive unit and the tilting drive unit are hingedly connected to each other so as to have the T3 pivot point, 10. The clamping device for an antenna according to claim 9, wherein the tilting drive unit is hingedly connected to the upper horizontal bracket of the antenna mounting bracket to have the T1 pivot point and the T2 pivot point via the tilting link member.

11. A mounting rotation block is hingedly connected to the lower support bracket portion to have the S2 rotation point; 10. The clamping device for an antenna of claim 9, wherein the mounting pivot block is hingedly connected to the lower horizontal bracket of the antenna mounting bracket to have a T4 pivot point.

12. 10. The antenna clamping device according to claim 9, wherein both left and right ends of the upper support bracket portion and both left and right ends of the lower support bracket portion are connected in the up-down direction by a pair of vertical support frames, respectively.

13. 10. The clamping device for an antenna according to claim 9, wherein an extension bar assembly is detachably provided between the upper support bracket portion and the lower support bracket portion and the support pole, the extension bar assembly selectively separating the upper support bracket portion and the lower support bracket portion from the support pole by a predetermined distance.

14. The extension bar assembly includes: a pair of front and rear horizontal bars provided at heights corresponding to the upper and lower fixing bracket portions and extending horizontally in the front-rear direction toward the upper and lower fixing bracket portions; a left-right horizontal bar that is disposed horizontally in the left-right direction and connects the pair of front and rear horizontal bars, The antenna clamping device according to claim 13, wherein front ends of the pair of front and rear horizontal bars are connected in the up-down direction by a pair of vertical support frames.

15. 15. The antenna clamping device of claim 12 or 14, wherein the pair of vertical support frames have an "L"-shaped horizontal cross section so as to simultaneously support the side end surfaces and rear end surfaces of the upper support bracket portion and the lower support bracket portion.

16. front ends of the pair of vertical support frames are fixed by a first pair of support bracket fastening bolts passing through the upper support bracket portion and a second pair of support bracket fastening bolts passing through the lower support bracket portion; 15. The antenna clamping device according to claim 12, wherein rear ends of the pair of vertical support frames are fixed by pole fixing bolts inserted through the upper and lower fixing bracket portions.

Images