Antenna clamping device

Abstract

To provide an antenna clamping device capable of suppressing the generation of backlash noise. 【Solution means】The antenna clamping device includes a fixed bracket portion provided above and below the support pole so as to mediate the installation of the antenna device with respect to the support pole, an antenna installation bracket for mediating the front installation of the antenna device, a steering drive unit connected to the fixed bracket portion and driven to steer and rotate the antenna device, a tilting drive unit having an upper end hinged to the steering drive unit and a lower end hinged to an upper end portion of the rear surface of the antenna installation bracket via a pair of tilting link members and driven to tilt and rotate the antenna device, and further includes a backlash reduction design shape for reducing the generation of mechanical backlash noise due to the eccentric load of the antenna device.

Description

Technical Field

[0001] The present invention relates to a clamping apparatus for an antenna, and more particularly, to an antenna clamping apparatus that can efficiently arrange antenna devices in a dense installation space, can easily adjust the direction of the antenna devices, minimizes interference during direction adjustment according to the size of the antenna devices, and minimizes the generation of abnormal noises such as backlash noise during the directivity adjustment of the antenna devices.

Background Art

[0002] Generally, wireless communication technologies, such as MIMO (Multiple Input Multiple Output) technology, are technologies that epochally increase the data transmission capacity using multiple antennas. In a transmitter, different data are transmitted through each transmitting antenna, and in a receiver, it is a Spatial multiplexing method that separates the transmitted data by appropriate signal processing.

[0003] Therefore, by simultaneously increasing the number of transmitting and receiving antennas, the channel capacity increases and more data can be transmitted. For example, when the number of antennas is increased to 10, about 10 times the channel capacity is ensured using the same frequency band compared to the current single-antenna system.

[0004] In 4G LTE-advanced, up to 8 antennas are used. In the pre-5G stage, products equipped with 64 or 128 antennas were launched. Currently, in 5G, base station devices with a much larger number of antennas are being developed, which is called Massive MIMO technology. In contrast to the past 2-Dimension Cell operation, currently, with the introduction of Massive MIMO technology enabling 3D-Beamforming, it is preferably called FD-MIMO (Full Dimension).

[0005] In massive MIMO technology, as the number of ANTs (antennas) increases, the numbers of associated transmitters and filters also increase accordingly. Nevertheless, due to the lease cost of the installation location and spatial constraints, it is realistic to make RF components (Antenna / Filter / Power Amplifier / Transceiver etc.) small, light, and inexpensive. Although massive MIMO requires high output for coverage expansion, the power consumption and heat generation caused by such high output act as negative factors for reducing weight and size.

[0006] In particular, when installing a MIMO antenna in which modules with RF elements and digital elements realized are combined in a stacked structure in a limited space, in order to maximize the ease of installation and space utilization, the need for compactification and miniaturization design for multiple layers constituting the MIMO antenna emerges. Currently, there is a strong demand for the freedom of direction adjustment of the antenna device installed on one support pole. In response to the above requirements, Korean Registered Patent Publication No. 10-2095871 (announced on April 2, 2020) (hereinafter referred to as the "prior art") discloses an "antenna clamping device" including a tilting unit for rotating the antenna device in the vertical direction and a steering unit for rotating the antenna device in the horizontal direction.

[0007] However, the prior art has a problem in that the tilting unit has a small range for rotating the antenna device in the vertical direction.

[0008] In addition, every time the direction of the antenna device with a somewhat heavy weight is adjusted by tilting or steering rotation, there is also a problem that backlash noise often occurs at the gear connection part that is rotatably connected for tilting rotation and steering rotation.

Summary of the Invention

Problems to be Solved by the Invention

[0009] The present invention has been made to solve the above technical problems, and an object thereof is to provide a clamping device for an antenna that can tilt and rotate an antenna device in the vertical direction and simultaneously perform a steering rotation operation in the horizontal direction, and can secure the maximum rotation range in each direction.

[0010] At the same time, another object of the present invention is to provide a clamping device for an antenna that selectively includes an extension bar assembly so as to match the number and installation space of antenna devices installed on a support pole for a user.

[0011] Further, when adjusting the direction of the antenna including the tilting rotation and steering rotation of the antenna device, which is a relatively heavy body, another object is to provide a clamping device for an antenna that can block the generation of mechanical backlash noise from each connecting portion that is realized to be tilt-rotatable and steerable.

[0012] And still another object is to provide a clamping device for an antenna that can be intensively installed so as to form two steering rotation points based on an antenna installation bracket for the antenna device, and enables miniaturization design of the product.

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

Means for Solving the Problems

[0014] An antenna clamping device according to an embodiment of the present invention includes a fixed bracket portion provided above and below the support pole so as to mediate the installation of the antenna device with respect to the support pole, an antenna installation bracket for mediating the front installation of the antenna device, a steering drive unit connected to the fixed bracket portion and driven to steer and rotate the antenna device, and an upper end hinged to the steering drive unit and a lower end hinged to an upper end portion of the rear surface of the antenna installation bracket via a pair of tilting link members to drive the antenna device to tilt and rotate, and further includes a backlash reduction design shape for reducing the generation of mechanical backlash noise due to the eccentric load of the antenna device.

[0015] Here, 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.

[0016] Further, the backlash reduction design shape may be provided with an inclined surface on a mounting rotation block that mediates a hinge connection so as to be tilt-rotatable and steer-rotatable with respect to a lower support bracket portion provided on the support pole so as to correspond to the lower fixed bracket portion.

[0017] Further, the backlash reduction design shape may have a trapezoidal cross section including the inclined surface where at least a surface of a steering hinge bush intervening between the steering hinge inserted into a steering hinge installation groove provided at a hinge connection point of the mounting rotation block is in surface contact.

[0018] Further, the steering hinge installation groove may be processed and formed into a groove shape with openings on the upper surface side and the lower surface side, such that the upper steering hinge and the lower steering hinge are interposed via the upper vertical axis mounting portion and the lower vertical axis mounting portion formed in the lower support bracket portion.

[0019] Further, the mounting rotation block includes a rotation block body whose rear end is hinge-connected to the lower support bracket portion and whose front end is hinge-connected to the lower end portion of the rear surface of the antenna installation bracket, and a steering hinge cover coupled to the side surface of the rear end portion of the rotation block body. When the steering hinge cover is coupled to the rotation block body, the steering hinge installation groove may be formed such that its inner surface has a circular cross-section.

[0020] Further, the backlash reduction design shape may have a trapezoidal cross-section including at least an inclined surface where a tilting hinge bush interposed between a tilting hinge inserted into a tilting hinge installation groove provided at the hinge connection point of the mounting rotation block is in surface contact.

[0021] Further, the tilting hinge installation groove may be processed and formed into a groove shape with openings on one side surface and the other side surface, such that the one-side tilting hinge and the other-side tilting hinge are interposed via a lower horizontal bracket provided at the lower end portion of the antenna installation bracket.

[0022] Further, the mounting rotation block includes a rotation block body whose rear end is hinge-connected to the lower support bracket portion and whose front end is hinge-connected to the lower end portion of the rear surface of the antenna installation bracket, and a tilting hinge cover coupled to the lower surface of the front end portion of the rotation block body. When the tilting hinge cover is coupled to the rotation block body, the tilting hinge installation groove may be formed such that its inner surface has a circular cross-section.

[0023] Further, the backlash reduction design shape may be a trapezoidal cross-section including a surface with an inclined tooth surface locked in the rotational direction, which is a one-side mating portion formed at both ends of the tilting shaft of the tilting drive unit and the other-side mating portion formed at the end of the tilting link member coupled to the tilting shaft.

[0024] Further, the backlash reduction design shape may be a trapezoidal cross-section including a surface with an inclined tooth surface locked in the rotational direction, which is a one-side mating portion formed at both ends of the steering shaft of the steering drive unit and the other-side mating portion formed at the upper support bracket portion provided on the column pole so as to correspond to the upper fixed bracket portion to which the steering shaft is coupled.

[0025] Further, the backlash reduction design shape may be provided so as to include inclined surfaces interfering with the tilting rotation direction or the steering rotation direction in the tilting damper interposed between the inner surface of the tilting drive unit housing of the tilting drive unit and the tilting drive motor, and the damper interposed between the inner surface of the steering upper housing of the steering drive unit and the steering drive motor, respectively.

[0026] Further, the steering drive unit may include an electrically driven steering drive motor, a steering shaft vertically arranged, and a transmission gear assembly that receives a driving force from the steering drive motor and transmits it to the steering shaft. Among the transmission gear assemblies, the transmission gear meshing with the steering shaft may be arranged to be inclined forward or backward at a predetermined angle so as not to be orthogonal to the tilting rotation direction in the front-rear direction of the antenna device.

Advantages of the Invention

[0027] According to the antenna clamping device according to an embodiment of the present invention, the following various effects can be achieved.

[0028] First, since a clamping device selectively provided with an extension bar assembly can be applied according to the number and installation space of antenna devices installed on a support pole by a user, it has the effect of maximizing the convenience of installation on the support pole and the utilization of space.

[0029] Second, when adjusting the antenna direction including the tilting rotation and steering rotation of the antenna device, which is a relatively heavy object, it has the effect of blocking the generation of mechanical backlash noise from each connecting part that enables tilting rotation and steering rotation.

[0030] Third, since the antenna device can be intensively installed so as to form two steering rotation points based on the antenna installation bracket, it has the effect of enabling miniaturized design of the product.

Brief Description of the Drawings

[0031]

Figure 1A

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Figure 5A

Figure 5B

Figure 5C

Figure 6

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Figure 11A

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Mode for Carrying Out the Invention

[0032] Hereinafter, an antenna clamping device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0033] When attaching reference numerals to the components of each drawing, it should be noted that for the same components, as far as possible, the same numerals are used even if they are shown on other drawings. Also, when explaining the embodiments of the present invention, if it is determined that a specific explanation of such a known configuration or function hinders the understanding of the embodiments of the present invention, the detailed explanation thereof is omitted.

[0034] When explaining the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. can be used. Such terms are merely for distinguishing the components from other components, and the essence, order, or procedure of the components are not limited by such terms. Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those having ordinary knowledge in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or overly formal sense unless clearly defined in the present application.

[0035] Figures 1A and 1B are front and rear perspective views showing the state of installation of an antenna device using an antenna clamping device according to an embodiment of the present invention on a support pole of the antenna device. Figures 2A and 2B are front and rear perspective views showing an antenna clamping device according to an embodiment of the present invention. Figures 3A and 3B are exploded perspective views of Figures 2A and 2B, and among the configurations of Figures 2A and 2B, it is an exploded perspective view showing the state of connection of an antenna installation bracket to a tilting drive unit and a steering drive unit. Figures 4A and 4B are detailed exploded perspective views of Figures 2A and 2B. Figures 5A and 5B are side and plan views showing the state of installation of an antenna device when an extension bar assembly is not used and when an extension bar assembly is used among the configurations of Figures 2A and 2B. Figure 5C is a cross-sectional view taken along line B-B shown in (b) of Figure 5A. Figure 6 is a partially cut-away perspective view showing the state of installation of a detachable clamping gear panel clamped to the outer peripheral surface of a support pole among the configurations of Figure 1.

[0036] As shown in FIGS. 1A to 6, an antenna clamping device 1 according to an embodiment of the present invention mediates the installation of an antenna device A with respect to a support pole P, and at the same time, performs a function that enables detailed directivity setting so as to satisfy the beam-forming design of a frequency beam oscillating via the antenna device A with respect to the support pole P in a fixed state.

[0037] More specifically, as shown in FIGS. 1A and 1B, via support pole installation bracket portions 50A, 50B, 80A, 80B provided in advance around the outer peripheral surface of the support pole P, the antenna clamping device 1 according to an embodiment of the present invention can be connected at a predetermined distance in the horizontal direction so as to be provided in a cantilever shape with respect to the longitudinal direction of the vertically provided support pole P.

[0038] Here, the support pole installation bracket parts 50A, 50B, 80A, and 80B can include fixed bracket parts 50A and 50B provided above and below the support pole P so as to mediate the installation of the antenna device A with respect to the support pole P, and support bracket parts 80A and 80B fixedly installed with respect to the support pole P so as to correspond to the fixed bracket part 50A. The specific configurations and functions of the fixed bracket parts 50A and 50B and the support bracket parts 80A and 80B will be described in more detail later.

[0039] For the convenience of understanding, the clamping device 1 realized in the embodiment of the present invention is described by taking the example of the installation and application of the antenna device A. However, it should be understood that it includes all cases where not only the antenna device A but also lighting fixtures (not shown) such as LED lighting devices and high-output sports lighting are installed on the support pole P.

[0040] For example, by mediating the installation of lighting fixtures provided in a sports stadium or the like using the clamping device 1 realized in the embodiment of the present invention, the user can perform tilting rotation and / or steering rotation operations in a desired direction.

[0041] Referring to FIGS. 1A and 1B, the antenna clamping device 1 according to an embodiment of the present invention can be installed via an extension bar assembly 60 that adjusts the installation distance of the antenna device A so as to be separated from the support pole P by a predetermined distance.

[0042] As shown in FIGS. 5A to 5C, the extension bar assembly 60 may be selectively provided depending on whether the antenna device A is spaced apart from the support pole P. When the antenna device A is coupled to the outer peripheral surface of the support pole P in close contact without the need for the extension bar assembly 60, only the components corresponding to the extension bar assembly 60 can be detachably removed. When the extension bar assembly 60 is removed, the clamping gear panel 67 provided on the left and right horizontal bars 63 described later is directly provided on the upper support bracket portion 80A and the lower support bracket portion 80B described later, and simultaneously directly clamps the outer peripheral surface of the support pole P. At the same time, a support pole fixing bolt 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.

[0043] FIGS. 1A and 1B are shown as an embodiment in which the above-described extension bar assembly 60 is provided, and FIGS. 5A and 5B(a) are shown as an embodiment in which the extension bar assembly 60 is deleted.

[0044] Here, the extension bar assembly 60 may include an upper extension bar assembly (not shown in the drawing) provided at a height corresponding to the upper fixing bracket portion 50A described above and a lower extension bar assembly (not shown in the drawing) provided at a height corresponding to the lower fixing bracket portion 50B. Since the upper extension bar assembly and the lower extension bar assembly have the same configuration except for the provided positions, they are not given different drawing reference numerals, and the description of the remaining part can be substituted by the description of any one of the upper extension bar assembly and the lower extension bar assembly.

[0045] On the one hand, the extension bar assembly 60 can include a pair of front-rear horizontal bars 61A and 61B that horizontally extend toward the left and right ends of the upper fixed bracket portion 50A and the lower fixed bracket portion 50B, and a left-right horizontal bar 63 that arranges and connects the rear end portions of the pair of front-rear horizontal bars 61A and 61B in the left-right horizontal direction.

[0046] Although not denoted by different drawing reference numerals, such an extension bar assembly 60 may be provided in a pair of an upper assembly 60A and a lower assembly 60B that surround the other side of the outer peripheral surface of the support pole P corresponding to the upper fixed bracket portion 50A and the lower fixed bracket portion 50B that are provided in a form surrounding one side of the outer peripheral surface of the support pole P.

[0047] At the same time, as shown in FIGS. 2A and 2B, the extension bar assembly 60 has a pair of front-rear horizontal bars 61A and 61B that penetrate the left-right horizontal bar 63 and extend a predetermined length toward the upper fixed bracket portion 50A and the lower fixed bracket portion 50B provided on the support pole P, and support pole fixing bolts (52, see FIG. 5C) inserted through from the upper fixed bracket portion 50A and the lower fixed bracket portion 50B side are respectively fastened to the bolt fastening holes 65 at the rear end portions of the pair of front-rear horizontal bars 61A and 61B, so that the connection to the support pole P can be completed. The fixing of the front end portions of the pair of front-rear horizontal bars 61A and 61B to the left-right horizontal bar 63 may be performed by a support bracket fastening bolt 62 that simultaneously penetrates the upper support bracket portion 80A and the lower support bracket portion 80B described later, as shown in FIG. 5C.

[0048] Here, as shown in FIGS. 2A and 2B, on the inner surface of the left-right horizontal bar 63 facing the support pole P, a slot-shaped gear panel installation groove (85, see FIG. 6) is provided, and a clamping gear panel 67 in which a plurality of gear teeth are arranged in a "V" shape can be fixed to the gear panel installation groove 85 so as to clamp and prevent slipping on the outer peripheral surface of the support pole P.

[0049] Here, the clamping gear panel 67 does not necessarily have to be formed in a "V" shape, and preferably has a shape that is as close as possible to matching the outer peripheral surface of the support pole P. When the clamping gear panel 67 is in a "V" shape, it has the advantage of being applicable to support poles P with various outer diameters.

[0050] The clamping gear panel 67 should not be provided only on the left and right horizontal bars 63. When it is provided directly on the support pole P without the extension bar assembly 60, as shown in FIG. 6, it can also be provided on the inner side surfaces of the upper support bracket portion 80A and the lower support bracket portion 80B described later.

[0051] In this case, as shown in FIG. 6, after the clamping gear panel 67 is inserted into the gear panel installation groove 85, the outer end surface of the intermediate portion where no gear teeth are formed is provided so as to match the outer side surfaces of the upper support bracket portion 80A and the lower support bracket portion 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 part thereof. At this time, while the body portion 69A of the gear panel fixing screw 69 is inserted and fastened to the screw fixing hole 87, the stepped surface of the head portion 69B formed with a diameter larger than that of the body portion 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 detaching from the gear panel installation groove 85.

[0052] On the other hand, upper support bracket portions 80A and lower support bracket portions 80B may be provided at the front end portions of the pair of front and rear horizontal bars 61A and 61B of the extension bar assembly 60, as shown in FIGS. 3A and 3B.

[0053] The connection method of the front ends of the pair of front and rear horizontal bars 61A and 61B to the upper support bracket portion 80A and the lower support bracket portion 80B is, as described above, only different in whether to use the column pole fixing bolt 52 or the support bracket fastening bolt 62, and is the same as the connection method for the rear ends of the pair of front and rear horizontal bars 61A and 61B of the upper fixing bracket portion 50A and the lower fixing bracket portion 50B, so a specific description is omitted.

[0054] As shown in FIGS. 3A and 3B, both left and right ends of each of the upper support bracket portion 80A and the lower support bracket portion 80B can be firmly connected via a pair of vertical support frames 70 arranged in the vertical direction.

[0055] The vertical support frame 70 can simultaneously connect and fix the front ends of the pair of front and rear horizontal bars 61A and 61B in the vertical direction among the configurations of the upper assembly 60A and the lower assembly 60B of the extension bar assembly 60.

[0056] Here, the vertical support frame 70 has an "L"-shaped horizontal cross-section so as to support the side end faces and the rear end faces of the upper support bracket portion 80A and the lower support bracket portion 80B simultaneously. At the portion that supports the rear end faces of the upper support bracket portion 80A and the lower support bracket portion 80B, the front ends of the pair of front and rear horizontal bars 61A and 61B described above can penetrate and be supported.

[0057] In this way, the upper support bracket portion 80A and the lower support bracket portion 80B are provided at independent positions separated in the vertical direction along the longitudinal direction of the column pole P, but the addition of the pair of vertical support frames 70 enables a rectangular parallelepiped-shaped frame structure to firmly and stably maintain the connection so that there is no play in the left and right and front and rear directions.

[0058] Therefore, by driving the tilting drive unit 100 and the 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 during tilting rotation in the front-rear direction and steering rotation in the left-right direction.

[0059] As shown in FIGS. 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 so as to provide two steering rotation points S1 and S2 required during the steering rotation of the antenna device A.

[0060] The upper vertical axis mounting portion 81A may be provided with a pair protruding vertically, and the intermediate portion thereof may be provided in the form of an empty space. In the empty space between the pair of upper vertical axis mounting portions 81A, among the components of the steering drive unit 200 described later, the steering shaft 240 can be interposed and connected.

[0061] The lower vertical axis mounting portion 81B may also be provided with a pair protruding vertically, and the intermediate portion thereof may be provided in the form of an empty space. In the empty space between the pair of lower vertical axis mounting portions 81B, the rear end portion of the mounting rotation block 400 described later can be interposed and connected.

[0062] More specifically, as shown in FIGS. 4A and 4B, the upper vertical axis mounting portion 81A and the lower vertical axis mounting portion 81B can be provided to provide two steering rotation points S1 and S2 and to position the center of the steering shaft 240 of the steering drive unit 200 and the hinge connection point of the mounting rotation block 400 on the same vertical line in the vertical direction.

[0063] On the one hand, as shown in FIGS. 4A and 4B, a tilting drive unit 100 can be hinged to the lower part of a steering drive unit 200 via unit connection hinges (117, see FIGS. 11A to 12 described later).

[0064] The meaning that the steering drive unit 200 and the tilting drive unit 100 are hinged means that the upper end of an antenna installation bracket 90 provided forward so as to mediate the installation of the antenna device A is in a relatively fixed state during the tilting rotation operation with respect to the steering drive unit 200, and the tilting drive unit 100 is also provided so as to tilt and rotate within a predetermined angle range relatively.

[0065] At the same time, as shown in FIGS. 4A and 4B, the tilting drive unit 100 can be connected to have at least three tilting rotation points T1, T2, and T3 with respect to the steering drive unit 200 and the antenna installation bracket 90.

[0066] The tilting rotation point indicated by "T1" (hereinafter abbreviated as "T1 rotation point") means the axial direction of a tilting shaft 140 in the configuration of the tilting drive unit 100, and becomes the rotation center point of the tilting link members 300A and 300B described later connected thereto.

[0067] At the same time, 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 and 300B having one end connected to the T1 rotation point, and may be the rotation radius drawn by the upper end of the antenna installation bracket 90 connected thereto. Here, the rotation radius of the upper end of the antenna installation bracket 90 can mean the tilting path of the antenna device A.

[0068] On the one hand, the tilting rotation point indicated by "T3" (hereinafter abbreviated as "T3 rotation point") may be the 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 enable the tilting drive unit 100 to rotate relatively freely with respect to the steering drive unit 200.

[0069] Here, on the premise that, as described above, the steering drive unit 200 is a component relatively fixed to the upper vertical axis mounting portion 81A, the tilting drive unit 100 may be a component that rotates relatively below the steering drive unit 200.

[0070] When the upper ends of the tilting link members 300A and 300B tilt forward, the tilting drive unit 100 can rotate backward by a predetermined angle with reference to the T3 rotation point due to the load of the antenna device A, which is a weight body connected thereto. That is, when the upper end of the antenna device A tilts and rotates forward by the tilting link members 300A and 300B, the center of gravity of the antenna device A moves backward. To compensate for this movement of the center of gravity, the tilting drive unit 100 rotates relative to the steering drive unit 200 with reference to the T3 rotation point.

[0071] Here, the tilting drive unit 100 and the steering drive unit 200 do not necessarily have to be connected by only one rotation point, namely the T3 rotation point.

[0072] For example, although not shown in the figure, it is also possible to add another link member type component having the same form as the tilting link members 300A and 300B and hinge-connect them so that tilting rotation points are added to each end. However, when connecting the tilting drive unit 100 and the steering drive unit 200 with a link member type, all components like hinges must be provided in pairs, so there is a disadvantage in that the number of parts increases.

[0073] In the case of the antenna clamping device 1 according to an embodiment of the present invention, without adding link member type components, by being provided such that the tilting drive unit 100 and the steering drive unit 200 are hinge-connected to each other using only a pair of unit connection hinges 117, it is possible to achieve an overall miniaturized design of the product and have the advantage of reducing the number of parts.

[0074] On the other hand, the T3 rotation point is assumed on the premise that the tilting link members 300A and 300B are not tilt-driven as shown in FIGS. 4A and 4B. When the T1 rotation point and the T2 rotation point are located on a straight line perpendicular to each other, it is preferably located at least behind the T1 rotation point and the T2 rotation point. More preferably, the T3 rotation point may be designed to be located at least in front of the two steering rotation points S1 and S2 located on a straight line perpendicular to each other. Hereinafter, the rotation point indicated by S1 among the steering rotation points will be abbreviated as the "S1 rotation point", and the rotation point indicated by S2 will be abbreviated as the "S2 rotation point" and described.

[0075] Therefore, when the T3 rotation point is assumed to be stopped at a position before the tilting link members 300A and 300B are tilt-driven, it can be located behind the virtual straight line connecting the T1 rotation point and the T2 rotation point and in front of the two steering rotation points S1 and S2.

[0076] Here, since the antenna device A is a predetermined weight body, when performing directional adjustment by tilting and rotating the antenna device A, mechanical backlash noise occurs due to the mechanical connection structure at the connection point (T1 rotation point) of the tilting link members 300A and 300B. However, when the T3 rotation point is close to the virtual straight line connecting the T1 rotation point and the T2 rotation point, the occurrence phenomenon of the mechanical backlash noise further increases. On the other hand, when the T3 rotation point coincides with the virtual straight line connecting the two steering rotation points S1 and S2 or is located further rearward, assuming that the protruding lengths of the upper vertical axis mounting portion 81A and the lower vertical axis mounting portion 81B are the same, the steering rotation angle can be limited within a predetermined range by the peripheral components.

[0077] Therefore, more preferably, when assuming that the T3 rotation point stops at the position before the tilting link members 300A and 300B are tilt-driven, it is set at a position rearward of the virtual straight line connecting the T1 rotation point and the T2 rotation point and having the maximum isolation distance from the virtual straight line connecting the two steering rotation points S1 and S2. In this case, it may be set at a position where no mechanical backlash noise occurs. Hereinafter, the cause of the occurrence of the above-described mechanical backlash noise and its prevention principle will be described in more detail later.

[0078] On the other hand, as shown in FIGS. 1A to 4B, the antenna device A can be coupled so that the upper end tilts and rotates in the front-rear direction around the antenna tilting rotation point (T4 at the lower end, hereinafter abbreviated as "T4 rotation point") or the left and right both ends steer and rotate in the front-rear direction around the two steering rotation points S1 and S2 by receiving the tilting rotation and / or steering rotation driving force of the tilting driving unit 100 and the steering driving unit 200 via the antenna installation bracket 90.

[0079] More specifically, the antenna mounting bracket 90 may have at least one point on its upper end connected to the upper support bracket portion 80A via a pair of tilting link members 300A and 300B and a tilting drive unit 100 and a steering drive unit 200 so as to be steerably rotatable, and at least one point on its lower end connected to the lower support bracket portion 80B so as to be steerably rotatable.

[0080] As shown in FIGS. 3A and 3B, the antenna mounting bracket 90 can include two mounting extension portions 94 extending outward from a base bracket panel 91 formed in a rectangular panel shape.

[0081] A plurality of bolt through holes 95 are formed in the base bracket panel 91 and the mounting extension portions 94. This is to make the formation positions of the plurality of bolt through holes 95 more diverse so that the base bracket panel 91 can be fastened at an appropriate position according to the size and form of the antenna device A to be coupled. Through the plurality of bolt through holes 95, an antenna fastening bolt (see 94 in FIG. 4A) passes through and is fastened to a bolt fastening hole (not shown) formed on the back surface of the antenna device A, so that the antenna device A can be firmly mounted on the antenna mounting bracket 90.

[0082] At the same time, the antenna mounting bracket 90 can further include four diagonal mounting portions 92 integrally extending outward in the diagonal direction from each corner portion of the base bracket panel 91 of the antenna mounting bracket 90, and additional bolt fastening holes 93 may be formed in each of the diagonal mounting portions 92.

[0083] On the other hand, a plurality of antenna installation fastening holes 96 penetrating in the front-rear direction are formed at a plurality of locations in the antenna mounting bracket 90, and the back surface of the antenna device A can be firmly coupled via a plurality of antenna fixing screws 97 penetrating and fastening the antenna installation fastening holes 96.

[0084] Of the four diagonal mounting portions 92, upper horizontal brackets 98U may be fixed to the back surfaces of the upper two diagonal mounting portions 92, and lower horizontal brackets 98D may be fixed to the back surfaces of the lower two diagonal mounting portions 92 among the four diagonal mounting portions 92. In particular, the lower horizontal bracket 98D can be bolted and coupled to an additional bolt fastening hole 93 formed in the antenna installation bracket 90 via a mounting additional bolt 98S that penetrates it back and forth.

[0085] The upper horizontal bracket 98U serves to mediate a hinge connection for a pair of tilting link members 300A, 300B with respect to a T2 pivot point formed at its upper end with respect to the base bracket panel 91. In particular, hinge intervention holes 301, 302 for hinge connection may be provided at each end of the pair of tilting link members 300A, 300B corresponding to the T1 pivot point and the T2 pivot point, respectively.

[0086] Also, the lower horizontal bracket 98D serves to mediate a hinge connection for a T4 pivot point formed in the mounting rotation block 400 with respect to the base bracket panel 91.

[0087] The upper horizontal bracket 98U and the lower horizontal bracket 98D may be formed long in the left - right horizontal direction.

[0088] A pair of upper hinge connection ends 99U extend rearward from the upper horizontal bracket 98U, and can be hinge - connected to the tilting link members 300A, 300B via the hinge intervention holes 302 corresponding to the T2 pivot points of the tilting link members 300A, 300B through the link connection hinges 311, 312.

[0089] A pair of lower hinge connection ends 98D - 1 extend rearward from the lower horizontal bracket 98D, and can be hinge - connected to the front end of the mounting rotation block 400 via the T4 pivot point through a pair of block tilting hinges 440L, 440R described later.

[0090] The hinge connection configuration of the mounting rotation block 400 to the lower hinge connection end 99D of the lower horizontal bracket 98D will be described in more detail in the latter part that explains the principle of blocking mechanical backlash noise.

[0091] Briefly explaining the state of installation of the antenna clamping device 1 according to an embodiment of the present invention having such a configuration on the support pole P and its advantages is as follows.

[0092] That is, as shown in FIGS. 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 situation of the support pole P and closely couple it to the support pole P, or change the installation position of the antenna device A at a predetermined distance from the support pole P.

[0093] For example, as shown in FIGS. 5A and 5B, when the extension bar assembly 60 is not provided (refer to (a) in each drawing), since the antenna device A is coupled relatively closely to the support pole P, when there is no surrounding interference configuration (such as other antenna devices), the antenna device A can be intensively installed so that interference is minimized when adjusting the directionality. When the extension bar assembly 60 is provided (refer to (b) in each drawing), the antenna device A can be dispersedly installed at a predetermined distance (refer to the reference numeral "D" in the drawing) further away from the support pole P so that the surrounding interference configuration (such as other antenna devices) does not interfere.

[0094] As shown in FIG. 5C, the extension bar assembly 60 may be coupled 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 bar 63 and extend a predetermined length to the upper fixed bracket portion 50A and the lower fixed bracket portion 50B, and the support pole fixing bolts 52 inserted through from the upper fixed bracket portion 50A and the lower fixed bracket portion 50B side are respectively fastened to the bolt fastening holes 65 at the tip ends of the pair of front and rear horizontal bars 61A, 61B.

[0095] FIG. 7 is an exploded perspective view of the lower end portion of the antenna installation bracket, the support pole side installation bracket portion, and the mounting rotation block that mediates the connection thereof, among the configurations of FIGS. 4A and 4B. FIGS. 8A and 8B are front and rear exploded perspective views of the mounting rotation block, among the configurations of FIG. 7. FIG. 9 is a partial vertical cross-sectional view of a connection portion for explaining the function of the backlash blocking bush, among the configurations of FIGS. 8A and 8B.

[0096] The antenna clamping device 1 according to an embodiment of the present invention can further include a backlash reduction design shape for blocking a mechanical backlash noise phenomenon that may occur due to an eccentric load with respect to the gravitational direction of the antenna device A during the tilting rotation operation and / or the steering rotation operation of the antenna device A, which is relatively heavy.

[0097] In particular, since the antenna clamping device 1 according to an embodiment of the present invention is scattered and applied at a plurality of locations of the connection portion related to the tilting rotation operation or the steering rotation operation, the backlash reduction design shape will be described in more detail for this portion.

[0098] As shown in FIGS. 7 to 9, the antenna clamping device 1 according to an embodiment of the present invention hinge-connects the antenna device A to two steering rotation points S1 and S2 provided in the same vertical line direction from top to bottom in order to enable a smooth steering rotation operation of the antenna device A, and hinge-connects the antenna device A so as to form four tilting rotation points T1, T2, T3, and T4 provided in different horizontal line directions on the left and right in order to enable a smooth tilting rotation operation of the antenna device A.

[0099] Here, among the two steering rotation points S1 and S2, the upper rotation point S1 is a hinge point for steering and rotating the steering drive unit 200 itself in the left - right direction. Among the two steering rotation points S1 and S2, the lower rotation point S2 is a hinge point where the lower end of the antenna installation bracket 90 to which the antenna device A is substantially coupled rotates in the left - right direction, thereby enabling a more stable steering and rotating operation of the antenna device A.

[0100] More specifically, for the hinge connection with the steering drive unit 200 via the upper rotation point S1, steering hinge connection bolts 82 are fitted and fastened vertically in the upper and lower directions respectively to a pair of upper vertical axis mounting portions 81A, so that they can be fastened to both ends of the steering shaft (see 240, FIG. 10A). Specific explanations regarding the connection of the steering hinge connection bolts 82 to the steering shaft 240 will be described in more detail later.

[0101] On the other hand, among the four tilting rotation points T1, T2, T3, and T4, the T1 rotation point and the T2 rotation point are hinge points (fixed point and rotation point) for rotating the upper end of the antenna installation bracket 90 that mediates the connection of the antenna device A by the rotational operations of the tilting link members 300A and 300B as described above.

[0102] And, as described above, the T3 rotation point is a hinge point for the relative rotation between the tilting drive unit 100 and the steering drive unit 200.

[0103] Finally, as described above, the T4 rotation point is a hinge point for rotatably supporting the lower end of the antenna installation bracket 90 with respect to the mounting rotation block 400 so as to enable the tilting rotation operation of the antenna installation bracket 90 that mediates the connection of the antenna device A.

[0104] More specifically, referring to FIGS. 8A and 8B, the mounting rotation block 400 includes a rotation block body 410 whose rear end is hinge-connected to the lower support bracket portion 80B and whose front end is hinge-connected to the lower rear end surface (i.e., the lower horizontal bracket 98D) of the antenna installation bracket 90, a steering hinge cover 420 coupled to the side surface of the rear end portion of the rotation block body 410, and a tilting hinge cover 430 coupled to the lower surface of the front end portion of the rotation block body 410.

[0105] At the same time, the mounting rotation block 400 further includes steering hinge installation grooves 425A and 425B formed in a groove shape that opens respectively toward the upper and lower surface sides of the rotation block body 410 and the steering hinge cover 420, and upper and lower steering hinges 450U-1 and 450D-1 that support steering rotation by intervening in the upper and lower steering hinge installation grooves 425A and 425B through an upper hinge installation hole 82h-U and a lower hinge installation hole 82h-D formed in the lower vertical axis mounting portion 81B.

[0106] Here, when the steering hinge cover 420 is coupled to the rotation block body 410, the upper and lower steering hinge installation grooves 425A and 425B may be formed such that the inner surface generally has a circular cross-section and the diameter gradually increases toward the upper and lower surface sides. Therefore, the upper and lower steering hinge installation grooves 425A and 425B can have a trapezoidal vertical cross-section in which the length of the side corresponding to the inner surface is relatively smaller than the length of the side corresponding to the outer end.

[0107] At the same time, except for the parts where the upper steering hinge 450U-1 and the lower steering hinge 450D-1 are fastened to the upper hinge installation hole 82h-U and the lower hinge installation hole 82h-D, the insertion parts inserted into the above-described upper and lower steering hinge installation grooves 425A, 425B are preferably formed and shaped to fit so as to correspond to the processed groove shapes of the upper and lower steering hinge installation grooves 425A, 425B.

[0108] Here, between the upper steering hinge 450U-1, the lower steering hinge 450D-1, and the upper and lower steering hinge installation grooves 425A, 425B, an upper steering hinge bush 450U-2 and a lower steering hinge bush 450D-2 can be interposed, respectively.

[0109] On the other hand, the mounting rotation block 400 includes one-side and the other-side tilting hinge installation grooves 435A, 435B formed in a groove shape that opens toward one-side and the other-side surfaces of the rotation block body 410 and the tilting hinge cover 430, respectively, and lower hinge holes 98D-1h formed in a pair of lower hinge connection ends 98D-1 of the lower horizontal bracket 98D. Further, it can include a one-side tilting hinge 440L-1 and the other-side tilting hinge 440R-1 that support tilting rotation by being interposed in the one-side and the other-side tilting hinge installation grooves 435A, 435B, respectively, via the lower hinge holes 98D-1h.

[0110] Here, when the tilting hinge cover 430 is coupled to the rotation block body 410, the one-side and the other-side tilting hinge installation grooves 435A, 435B may be formed such that the inner surfaces generally have a circular cross-section, and are groove-processed into a shape in which the diameter gradually increases toward the one-side and the other-side surfaces. Therefore, the one-side and the other-side tilting hinge installation grooves 435A, 435B can have a trapezoidal vertical cross-section in which the length of the side corresponding to the inner surface is relatively smaller than the length of the side corresponding to the outer end.

[0111] The insertion parts of the tilting hinge 440L-1 on one side and the tilting hinge 440R-1 on the other side inserted into the tilting hinge installation grooves 435A and 435B on one side and the other side are preferably formed and shaped to fit so as to correspond to the processed groove shapes of the tilting hinge installation grooves 435A and 435B on one side and the other side, except for the parts fastened to the lower hinge holes 98D-1h on one side and the other side.

[0112] Here, a tilting hinge bush 440L-2 on one side and a tilting hinge bush 440R-2 on the other side can be interposed between the tilting hinge 440L-1 on one side, the tilting hinge 440R-1 on the other side, and the hinge installation grooves 435A and 435B on one side and the other side.

[0113] Generally, a bush is a friction-consuming member that is interposed between two relatively moving objects to guide the connection between the two objects or support the motion characteristics between the two objects. In particular, when it plays a role of supporting a rotating object with respect to a fixed object, usually, after processing a rectangular (square) groove with one end open in the fixed object, a part of the rotating object is inserted into the groove, and a bush having a shape corresponding to the groove is manufactured and interposed at the insertion part of the rotating object, so that the rotating object can be blocked from directly contacting the inner surface of the groove of the fixed object during motion. Therefore, the bush is generally formed in a hollow cylindrical shape with one end closed.

[0114] However, for a bush having the above-described shape (i.e., a groove having a rectangular vertical cross-section), since one end is closed, when an assembly tolerance occurs between the groove of the fixed object and the insertion part of the rotating object, there is a problem that it is difficult to cope with the tolerance in the rotational axis direction.

[0115] At the same time, in order to achieve smooth assembly between components, it is common to set assembly tolerances during the manufacture of components. However, as in the present invention, a bush provided to support tilting rotation and steering rotation operations for directional adjustment of the antenna device A, which is a predetermined weight body, has a rectangular (square) groove shape as a general type as described above. When manufactured with a predetermined assembly tolerance, the bush itself may be crushed and damaged by the specific eccentric load applied by tilting rotation and steering rotation, or mechanical backlash noise may occur.

[0116] In one embodiment of the present invention, in order to block the occurrence of the above-described mechanical backlash noise in advance, the mounting rotation block 400 can further include a backlash reduction design shape.

[0117] More specifically, the backlash reduction design shape is such that the shapes of the upper and lower steering hinge installation grooves 425A and 425B related to the steering rotation operation of the antenna device A and the upper steering hinge bush 450U-2 and the lower steering hinge bush 450D-2 interposed between the upper steering hinge 450U-1 and the lower steering hinge 450D-1 are designed to have a trapezoidal vertical cross-section, and the shapes of the tilting hinge installation grooves 435A and 435B on one side and the other side related to the tilting rotation operation of the antenna device A and the one-side tilting hinge bush 440L-2 and the other-side tilting hinge bush 440R-2 interposed between the one-side tilting hinge 440L-1 and the other-side tilting hinge 440R-1 are designed to have a trapezoidal horizontal cross-section.

[0118] In this way, in terms of the antenna device A being a predetermined weight body, the principle of minimizing the mechanical backlash noise phenomenon caused by the eccentric load unique to the specific steering rotation operation and tilting operation performed by the directional adjustment of the antenna device A will be briefly described with reference to FIG. 9 as follows.

[0119] As a reference, it is understood that the above-described mechanical backlash noise phenomenon occurs at the steering rotation points S1 and S2 provided to support the load in the front-rear direction, which is the tilting direction of the antenna device A, when the antenna device A is tilted and rotated. Conversely, it is understood that when the antenna device A is steered and rotated, the phenomenon occurs at the tilting rotation points T1, T2, T3, and T4 provided to support the centrifugal force load in the left-right direction, which is the steering direction of the antenna device A, which is a predetermined weight.

[0120] Referring to FIG. 9, when the antenna device A of the mounting rotation block 400 is tilted and rotated in the front-rear direction, the load of the antenna device A, which is a weight, acts so as to be eccentrically inclined forward on a virtual vertical line formed by the steering rotation points S1 and S2 of the lower vertical axis mounting portion 81B.

[0121] The antenna clamping device 1 according to an embodiment of the present invention is configured such that the upper and lower steering hinge installation grooves 425A and 425B, the insertion portions of the upper steering hinge 450U-1 and the lower steering hinge 450D-1 inserted therein, and the upper steering hinge bush 450U-2 and the lower steering hinge bush 450D-2 interposed therebetween are formed to have the above-described trapezoidal cross section so as to cope with the above-described eccentric load acting during the directional adjustment of the antenna device A.

[0122] Therefore, even when there is an assembly tolerance between the upper steering hinge 450U-1 and the lower steering hinge 450D-1 inserted and installed in the upper and lower steering hinge installation grooves 425A and 425B, and the upper steering hinge bush 450U-2 and the lower steering hinge bush 450D-2 interposed therebetween, it is possible to prevent the problem of disappearance of the rotation support function caused by the oval collapse of each bush 450U-2 and 450D-2, and to maintain the rotation support function while deforming along the inclined surface with respect to the steering rotation points S1 and S2 in the trapezoidal cross section when supporting the eccentric load.

[0123] In addition, since the eccentric load during the tilting operation of the antenna device A also coincides with the upper and lower steering hinge installation grooves 425A and 425B, the upper steering hinge 450U-1 and the lower steering hinge 450D-1, and the inclined surfaces of the upper steering hinge bush 450U-2 and the lower steering hinge bush 450D-2 interposed therebetween, it has the advantage of being able to block in advance the occurrence phenomenon of mechanical backlash noise generated during the tilting operation.

[0124] Figures 10A and 10B are left and right partial exploded perspective views showing the tilting drive unit and the steering drive unit in the configuration of the antenna clamping device according to an embodiment of the present invention.

[0125] As shown in FIGS. 10A and 10B, an antenna clamping device 1 according to an embodiment of the present invention can include a tilting drive unit 100 and a steering drive unit 200 coupled in front of an extension bar assembly 60 or an upper support bracket portion 80A or a lower support bracket portion 80B that mediates the attachment to the support pole P for the directional adjustment of the antenna device A.

[0126] The tilting drive unit 100 can include a tilting drive unit housing 110 having an internal space 110S in which a tilting drive unit 130 described later is incorporated, and a tilting drive unit housing cover 120 that shields one open side of the tilting drive unit housing 110.

[0127] The tilting drive unit housing cover 120 can be coupled to one open side end of the tilting drive unit housing 110 by a plurality of cover assembly screws 125.

[0128] In the tilting drive unit housing 110 and the tilting drive unit housing cover 120, tilting shaft connection holes 111h and 121h may be formed so as to communicate with the internal space 110S and expose both left and right ends of a tilting shaft 140, which is one of the components of the tilting drive unit 130 described later, to the outside.

[0129] Both ends of the tilting shaft 140 exposed to the outside through the tilting shaft connection holes 111h and 121h are connected to tilting link members 300A and 300B, and the tilting driving force transmitted from a tilting drive motor 150 described later can be transmitted to the tilting link members 300A and 300B.

[0130] On the other hand, the steering drive unit 200 can include a steering lower housing 210 on which a steering drive unit 230 described later is mounted and coupled, and a steering upper housing 220 that shields and covers the steering drive unit 230 mounted and coupled to the steering lower housing 210.

[0131] The steering upper housing 220 can be coupled to the upper edge end of the steering lower housing 210 disposed so as to cover the upper side of the steering lower housing 210 by a plurality of housing assembly screws 225.

[0132] The steering upper housing 220 and the steering lower housing 210 are each in communication with a space (not marked with a drawing reference numeral) in which a steering drive unit 230 is internally mounted, and a steering shaft connecting hole (not shown on the lower side, 221h) may be formed so that the upper and lower ends of a steering shaft 240, which is one of the components of the steering drive unit 230 described later, are exposed to the outside.

[0133] Both ends of the steering shaft 240 exposed to the outside through the steering shaft connecting hole (not shown, 221h) are connected to a steering hinge connecting bolt 82 provided in an upper vertical axis mounting portion 81A, and the steering drive unit 200 itself can be rotationally operated for steering by a steering driving force transmitted from a steering drive motor 250 described later.

[0134] FIGS. 11A and 11B are a one-side and the other-side exploded perspective views showing the connection relationship among a tilting drive unit, a steering drive unit, and a tilting link member in the configuration of an antenna clamping device according to an embodiment of the present invention, and FIG. 12 is a detailed exploded perspective view of FIG. 11A.

[0135] On the other hand, as shown in FIGS. 10A and 10B, the tilting drive unit 100 and the steering drive unit 200 can be hinge-connected via a unit connection hinge 117 at a hinge center point corresponding to a T3 rotation point.

[0136] For this purpose, hinge through ends 113 and 123 are respectively formed on 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 cover 120. Hinge through holes 114 and 124 are formed in each of the hinge through ends 113 and 123 so that a pair of unit connection hinges 117 can be fastened. Hinge fastening ends 213 are respectively formed on the left and right sides of the lower end of the steering lower housing 210. A hinge fastening hole 214 through which the unit connection hinge 117 passing through the hinge through holes 114 and 124 of the hinge through ends 113 and 123 is fastened may be formed in the hinge fastening end 213.

[0137] On the other hand, the tilting shaft 140 and the steering shaft 240 receive driving forces from the tilting drive motor 150 and the steering drive motor 250 respectively, and function as a driving force transmission part that enables the tilting rotation drive and the steering rotation drive of the tilting drive unit 100 and the steering drive unit 200. At the same time, they also play a role of supporting the load of the antenna device A, which is a heavy object, in the tilting direction and the steering direction respectively when the antenna device A tilts and rotates and steers.

[0138] Therefore, the antenna clamping device 1 according to an embodiment of the present invention may further include a design shape for backlash reduction at the power connection point between the tilting shaft 140 and the steering shaft 240.

[0139] More specifically, the design shape for backlash reduction can be realized as follows.

[0140] That is, the tilting shaft 140 and the steering shaft 240 may also generate mechanical backlash noise during the directional adjustment of the antenna device A. In the antenna clamping device 1 according to an embodiment of the present invention, in order to minimize the generation of such mechanical backlash noise, at least a part of the end portions of the tilting shaft 140 and the steering shaft 240 and the tilting link members 300A, 300B and the vertical axis mounting portions 81A, 81B connected thereto may further include one-side mating portions 143, 243 having a trapezoidal cross-section which are inclined surfaces with respect to the respective rotation axis directions and the other-side mating portions (303, 83, see the drawing reference numeral "83" in FIG. 4A).

[0141] More specifically, on the left and right end faces corresponding to the T1 rotation points of the tilting shaft 140, except for the central portions, one-side mating portions 143 in which tooth surfaces and tooth valleys locked in the circumferential direction are repeated may be formed respectively. In the central portion of the one-side mating portion 143, bolt fastening holes 145 into which link assembly bolts 305 for bolt-assembling the tilting link members 300A, 300B are inserted and fastened may be formed.

[0142] At the same time, on the inner surfaces corresponding to the T1 rotation points of the tilting link members 300A, 300B, except for the central portions, other-side mating portions 303 in which tooth surfaces and tooth valleys locked in the circumferential direction are repeated may be formed respectively. In the central portion of the other-side mating portion 303, bolt through-holes 301 through which the link assembly bolts 305 pass may be formed.

[0143] On the other hand, on the upper end face and the lower end face corresponding to the S1 and S2 rotation points of the steering shaft 240, except for the central portions, one-side mating portions 243 in which tooth surfaces and tooth valleys locked in the circumferential direction are repeated may be formed respectively. In the central portion of the one-side mating portion 243, bolt fastening holes 245 into which hinge connection bolts 82 for bolt-assembling the pair of upper vertical axis mounting portions 81A are inserted and fastened may be formed.

[0144] At the same time, on the lower surface part and the upper surface part corresponding to the S1 and S2 rotation points of the pair of upper vertical axis mounting parts 81A, except for the central parts, other-side mating parts 83 in which tooth surfaces and tooth valleys locked in the circumferential direction are repeated may be formed. In the central part of the other-side mating part 83, a bolt through-hole (not shown in the drawing code) through which the above-described hinge connection bolt 82 passes may be formed.

[0145] Here, the one-side mating parts 143 and 243 and the other-side mating parts 303 and 83 are firmly mated (meshed) with each other by the link assembly bolts 305 and the hinge connection bolts 82 so that the tooth surfaces and tooth valleys formed therein can transmit each driving force in the tilting rotation direction and the steering rotation direction. At the same time, by having a tooth surface of a mated part and a trapezoidal cross-section which is a surface where the tooth surface is inclined, it is possible to block in advance the occurrence of mechanical backlash noise.

[0146] The feature of blocking the occurrence of mechanical backlash noise due to the shape structures of the one-side mating parts 143 and 243 and the other-side mating parts 303 and 83 as described above is not only applied to the coupling structures between the tilting link members 300A and 300B and the tilting shaft 140 and between the upper vertical axis mounting part 81A and the steering shaft 240. That is, although it will be described in more detail later, due to the above-described feature of blocking the occurrence of mechanical backlash noise, it can be directly applied to the installation structures of the tilting drive motor 150 of the tilting drive unit 100 and the steering drive motor 250 of the steering drive unit 200.

[0147] FIG. 13A and FIG. 13B are one-side and the other-side exploded perspective views showing a tilting drive unit among the configurations of an antenna clamping device according to an embodiment of the present invention.

[0148] As shown in FIGS. 13A and 13B, the tilting drive unit 100 can further include an electrically driven tilting drive motor 150 and a transmission gear assembly 160 that receives a driving force from the tilting drive motor 150 and transmits it to the tilting shaft 140.

[0149] The tilting drive motor 150 and the transmission gear assembly 160 can be stably installed in the internal space 110S of the tilting drive unit housing 110 via a unit installation frame 180.

[0150] In particular, the transmission gear assembly 160 is physically partitioned and installed from other components provided in the internal space 110S by a gearbox housing 192 that is coupled via a plurality of box fixing bolts 195 so as to cover the upper portion of the gearbox base 191 after a plurality of gears are axially installed stably on the upper surface provided by the gearbox base 191.

[0151] Here, the transmission gear assembly 160 can include a first transmission gear 161 as an input gear provided to mesh with a motor worm gear 151 connected to the rotating shaft of the tilting drive motor 150, a second transmission gear 162 provided to mesh with the first transmission gear 161, a third transmission gear 163 provided to mesh with the second transmission gear 162, a fourth transmission gear 164 provided to mesh with the third transmission gear 163, and a fifth transmission gear 170 as an output gear provided to mesh with the fourth transmission gear 164.

[0152] The first to fifth transmission gears 161 - 164, 170 are formed of two-stage gears having different diameters so that the meshing portions of the input part and the output part are different in terms of the power transmission order, and are provided such that all the gear meshing ratios of the five transmission gears 161 - 164, 170 are different, so that an appropriate reduction force and reduction ratio can be converted with respect to the usage capacity of the tilting drive motor 150 and transmitted to the tilting shaft 140.

[0153] In particular, the first transmission gear 161 functions as an input gear, but since it is provided with a motor worm gear 151 whose gear form connected to the rotating shaft of the tilting drive motor 150 is of the worm gear type, at least one of the two-stage gears of the first transmission gear 161 preferably employs a worm wheel gear type gear that easily meshes with the worm gear. The fifth transmission gear 170 functions as an output gear, but as will be described later, since it is provided with a tilting shaft worm wheel gear 141 whose gear form connected to the outer peripheral surface of the tilting shaft 140 is of the worm wheel gear type, at least one of the two-stage gears of the fifth transmission gear 170 preferably employs a worm gear type gear that easily meshes with the worm wheel gear.

[0154] The tilting shaft worm wheel gear 141 can receive power by meshing with the rack gear teeth 171 formed on the outer peripheral surface of the fifth transmission gear 170 among the five transmission gears.

[0155] Here, the tilting shaft 140 is horizontally arranged left and right in the internal space 110S in the tilting drive unit housing 110 for smooth transmission of the driving force by the mutual mating of the one-side mating portion 143 and the other-side mating portion 303 with respect to the pair of tilting link members 300A and 300B. The transmission gear assembly 160 is arranged to generally have a vertical rotation axis, and the tilting drive motor 150 may be horizontally arranged left and right so as to have a rotation axis parallel to the tilting shaft 140.

[0156] At the same time, a motor control board 185 may be provided in the rear portion of the internal space 110S of the tilting drive unit housing 110 via a board fixing bracket 186.

[0157] On one hand, a tilting part damper (not shown) may be further provided between the tilting drive motor 150 and the inner surface of the tilting drive part housing 110. The tilting part damper serves to attenuate the operating reaction force transmitted in reverse from the antenna device A, which is a heavy body, due to the tilting drive of the tilting drive motor 150, and prevent the generation of mechanical backlash noise. Hereinafter, since the configuration and the operating effect of the tilting part damper are the same as those of the steering damper 500 described later, it will be described in more detail in the description part of the steering damper 500.

[0158] FIG. 14 is an exploded perspective view of a steering drive unit among the configurations of an antenna clamping device according to an embodiment of the present invention, FIG. 15 is a perspective view showing a transmission gear assembly in a state where a gear housing is removed among the configurations of FIG. 14, and FIG. 16 is a plan view in a state where an upper housing of the steering unit is removed among the configurations of FIG. 14.

[0159] As shown in FIGS. 14 to 16, the steering drive unit 200 may further include a steering drive motor 250 that is electrically driven, and a transmission gear assembly 260 that receives a driving force from the steering drive motor 250 and transmits it to the steering shaft 240.

[0160] The steering drive motor 250 and the transmission gear assembly 260 can be stably installed via a unit installation frame (not shown) in the internal space between the steering lower housing 210 and the steering upper housing 220.

[0161] In particular, the transmission gear assembly 260 can be physically partitioned and installed from other components provided in the internal space by a gearbox housing 292 that is coupled via a plurality of box fixing bolts 295 so as to cover the side portion of the gearbox base 291 after a plurality of gears are stably shaft-mounted on the side surface provided by the vertically arranged gearbox base 291.

[0162] Here, the driving force transmission mechanism for each component of the transmission gear assembly 260 (i.e., the first to fifth transmission gears 261 to 264, 270 and the motor worm gear 251) and the steering shaft 240 is substantially the same as the driving force transmission mechanism for the transmission gear assembly 160 and the tilting shaft 140 described in the tilting drive unit 100, differing only in direction. Thus, a detailed description thereof will be omitted.

[0163] On the other hand, a steering damper 500 may be further provided between the steering drive motor 250 and the inner surface of the upper steering housing 220 in a backlash reduction design shape. The steering damper 500 serves to attenuate the operating reaction force transmitted in reverse from the antenna device A, which is a heavy body, due to the steering drive of the steering drive motor 250, thereby preventing the generation of mechanical backlash noise.

[0164] More specifically, as shown in FIGS. 14 and 15, the steering damper 500 may be disposed between the upper end portion, which is opposite to the lower end portion to which the rotating shaft of the steering drive motor 250 is connected, and the inner surface of the upper steering housing 220.

[0165] The steering damper 500 may include an installation gasket 510 interposed at the lower end portion of the steering drive motor 250, a lower damper 520 fixed to the installation protrusion 252 of the steering drive motor 250 passing through the through hole 510h of the installation gasket 510, and an upper damper 530 having a lower end portion shaped to overlap a part of the upper end portion of the lower damper 520.

[0166] The lower damper 520 may be formed such that tooth surfaces (see reference numeral "521" in the drawings) and tooth valleys (see reference numeral "522" in the drawings) are repeated in the circumferential direction, and the portion forming the tooth surface 521 may be shaped to overlap a part of the upper damper 530.

[0167] The upper damper 530 has a through hole 530h formed in the upper surface portion through which a fixing protrusion (not shown) formed on the inner surface of the steering upper housing 220 is penetrated and fastened, and tooth surfaces (see reference numeral "531") and tooth valleys (see reference numeral "532") are formed on the lower surface portion 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 for alignment.

[0168] The steering damper 500 having such a configuration serves to prevent the generation of mechanical backlash noise of the steering drive motor 250 by attenuating the eccentric load of the antenna device A, which is a heavy body, when adjusting the tilting rotation in the front-rear direction due to the tilting rotation of the antenna device A and when adjusting the directivity in the left-right direction due to the steering rotation. This is preferably understood as an operational effect that is also directly applicable to the case of a tilting damper (not shown) for which a specific description is omitted.

[0169] As described above, the antenna clamping device 1 according to an embodiment of the present invention has, as technical features for minimizing or preventing the generation of mechanical backlash noise that may occur during the directivity adjustment of the antenna device A, which is a heavy body, 1) effectively designing and applying the position of the T3 tilting rotation point directly related to the tilting rotation operation, 2) changing and applying the shape design of the configuration related to each hinge of the mounting rotation block 400 that mediates the installation of the antenna installation bracket 90 with respect to the lower vertical axis mounting portion 81B, 3) changing and applying the design of the peripheral configuration connected to the tilting shaft 140 and the steering shaft 240, and 4) changing and applying the design of the connection portion of the tilting drive motor 150 and the steering drive motor 250.

[0170] At the same time, as shown in FIG. 16, when assuming that a tilting force acts in the front-rear direction (F-R) when the antenna device A performs a tilting rotation operation, the axial direction E of the worm gear 271 of the fifth transmission gear 270 provided to mesh with the worm wheel gear 241 of the steering shaft 240 is preferably provided so as to be inclined slightly rearward on one side or the other side rearward from the left-right horizontal direction.

[0171] When the worm wheel gear 241 of the steering shaft 240 and the worm gear 271 of the fifth transmission gear 270 are meshed orthogonally with respect to the tilting direction in the front-rear direction (F-R), there is an advantage of reducing the mechanical backlash noise during the steering rotation operation of the antenna device A. However, the effect of reducing the mechanical backlash noise during the tilting rotation operation of the antenna device A may decrease.

[0172] FIG. 17 is a perspective view showing a state of direction setting by tilting rotation and / or steering rotation of an antenna device using the antenna clamping device according to an embodiment of the present invention.

[0173] In FIG. 17(a), the antenna device A provided on the support pole P via the antenna clamping device 1 according to an embodiment of the present invention shows a mounting state with respect to the support pole P as a state before the directional adjustment by tilting rotation and steering rotation is performed.

[0174] Here, as shown in FIG. 17(b), when the user can complete the directional adjustment 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.

[0175] Also, as shown in Fig. 17(c), when the user can complete the directivity adjustment only by the steering rotation operation of the antenna device A, the user can operate the steering drive motor 250 of the steering drive unit 200 to perform the steering rotation.

[0176] And, as shown in Fig. 17(d), when the tilting rotation and the steering rotation operations of the antenna device A are simultaneously required for the directivity adjustment, 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 perform the directivity adjustment of the antenna device A in the desired direction.

[0177] As described above, the antenna clamping device 1 according to an embodiment of the present invention has been described in detail with reference to the attached drawings. However, the embodiments of the present invention are not necessarily limited to the above-described embodiment, and it goes without saying that various modifications and implementations within an equivalent range can be made by those having ordinary knowledge in the technical field to which the present invention pertains. Therefore, the true scope of the rights of the present invention is defined by the scope of the claims described below.

Industrial Applicability

[0178] The present invention can simultaneously tilt and rotate the antenna device in the vertical direction and perform a steering rotation operation in the horizontal direction, and can ensure the maximum rotation range in each direction. The present invention selectively includes an extension bar so as to match the number and installation space of the antenna devices installed on the support pole. When adjusting the direction of the antenna, including the tilting rotation and the steering rotation of the relatively heavy antenna device, the generation of mechanical backlash noise can be blocked from each connecting portion realized to be tiltable and rotatable. The antenna device can be intensively installed so as to form two steering rotation points based on the antenna installation bracket, and the present invention provides an antenna clamping device capable of miniaturizing the product design.

Explanation of Reference Numerals

[0179] P: Support pole, A: Antenna device 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 mating part 90: Antenna installation bracket, 91: Base bracket panel 92: Diagonal mounting part, 93: Additional bolt fastening hole 94: Mounting extension part, 95: Multiple bolt through holes 96: Antenna installation fastening hole, 97: Antenna fixing screw 98U: Upper horizontal bracket, 98D: Lower horizontal bracket 99U: Upper hinge connecting end, 99D: Lower hinge connecting end 100: Tilting drive unit, 110: Tilting drive part housing 120: Tilting drive part housing cover, 130: Tilting drive part 140: Tilting shaft, 143: One side 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 part 240: Steering shaft, 243: One side mating part 245: Bolt fastening hole, 250: Steering drive motor 260: Transmission gear assembly, 300A, 300B: Tilting link member 303: Other side mating part, 305: Link assembly bolt 400: Mounting rotation block, 410: Rotation 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: Other side tilting hinge, 440L-2: One side tilting hinge bush 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. Fixed bracket parts provided above and below the support pole so as to mediate the installation of the antenna device with respect to the support pole, An antenna installation bracket for mediating the front installation of the antenna device, A steering drive unit connected to the fixed bracket part and driven to steer and rotate the antenna device, An upper end is hinge-connected to the steering drive unit, and a lower end is hinge-connected to an upper end portion on the rear surface of the antenna installation bracket via a pair of tilting link members, and is driven to tilt and rotate the antenna device, including a tilting drive unit, An antenna clamping device further including a backlash reduction design shape for reducing the generation of mechanical backlash noise due to the eccentric load of the antenna device.

2. The fixed bracket part includes an upper fixed bracket part provided on the support pole and a lower fixed bracket part provided on the support pole and below the upper fixed bracket part. The antenna clamping device according to claim 1.

3. The backlash reduction design shape is provided with an inclined surface on a mounting rotation block that mediates a hinge connection so as to be tilt-rotatable and steer-rotatable with respect to a lower support bracket part provided on the support pole so as to correspond to the lower fixed bracket part. The antenna clamping device according to claim 2.

4. The backlash reduction design shape is Including a trapezoidal cross-section including the inclined surface where at least the steering hinge bush that intervenes between the steering hinge inserted into the steering hinge installation groove provided at the hinge connection point of the mounting rotation block is in surface contact. The antenna clamping device according to claim 3.

5. The steering hinge installation groove is processed and formed in a groove shape with openings on the upper surface side and the lower surface side so that the upper steering hinge and the lower steering hinge are interposed via an upper vertical axis mounting part and a lower vertical axis mounting part formed on the lower support bracket part. The antenna clamping device according to claim 4.

6. The mounting rotation block includes a rotation block body whose rear end is hinge-connected to the lower support bracket portion and whose front end is hinge-connected to the lower rear end of the antenna mounting bracket, and a steering hinge cover coupled to the side surface of the rear end of the rotation block body. The antenna clamping device according to claim 4, wherein the steering hinge installation groove is formed such that when the steering hinge cover is coupled to the rotation block body, the inner surface has a circular cross section.

7. The backlash reduction design shape is The antenna clamping device according to claim 3, including a trapezoidal cross section including an inclined surface where at least a tilting hinge bush intervening between a tilting hinge inserted into a tilting hinge installation groove provided at a hinge connection point of the mounting rotation block is in surface contact.

8. The antenna clamping device according to claim 7, wherein the tilting hinge installation groove is formed in a groove shape that opens toward one side surface and the other side surface such that one tilting hinge and the other tilting hinge are interposed via a lower horizontal bracket provided at the lower end of the antenna mounting bracket.

9. The mounting rotation block includes a rotation block body whose rear end is hinge-connected to the lower support bracket portion and whose front end is hinge-connected to the lower rear end of the antenna mounting bracket, and a tilting hinge cover coupled to the lower surface of the front end of the rotation block body. The antenna clamping device according to claim 4, wherein the tilting hinge installation groove is formed such that when the tilting hinge cover is coupled to the rotation block body, the inner surface has a circular cross section.

10. The backlash reduction design shape is The antenna clamping device according to claim 1, which is a trapezoidal cross section including an inclined surface where a tooth surface locked in a rotation direction is formed at both ends of a tilting shaft of the tilting drive unit and at an end of the tilting link member coupled to the tilting shaft.

11. The backlash reduction design shape is The one-side mating portion formed at both ends of the steering shaft of the steering drive unit, and the other-side mating portion formed at the upper support bracket portion provided on the support pole so as to correspond to the upper fixed bracket portion so that the steering shaft is coupled thereto, the trapezoidal cross-section including a surface with an inclined tooth surface locked in the rotation direction, the antenna clamping device according to claim 2.

12. The backlash reduction design shape is The tilting damper interposed between the inner surface of the tilting drive unit housing of the tilting drive unit and the tilting drive motor, and the steering damper interposed between the inner surface of the steering upper housing of the steering drive unit and the steering drive motor, each provided so as to include an inclined surface interfering in the tilting rotation direction or the steering rotation direction, the antenna clamping device according to claim 1.

13. The steering drive unit A steering drive motor driven electrically, A steering shaft arranged vertically up and down, A transmission gear assembly that receives a driving force from the steering drive motor and transmits it to the steering shaft, and Among the transmission gear assemblies, the transmission gear meshing with the steering shaft is arranged to be inclined forward or backward by a predetermined angle so as not to be orthogonal to the tilting rotation direction in the front-rear direction of the antenna device, the antenna clamping device according to claim 1.

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