JPS6342581Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for adjusting the installation angle of a parabolic reflector.

An offset parabolic reflector antenna is used to receive SHF band radio waves from satellite broadcasting, but because the directivity of the offset parabolic reflector antenna for receiving SHF band radio waves is sharp, it is difficult to set the azimuth and elevation angle of the parabolic reflector relative to the broadcasting satellite. The angle must be exact. However, in many conventional devices of this type, an exterior tube that is attached to a board with a parabolic reflector attached to it is attached to the upper end of the mast, and the parabolic reflector is pointed in the best direction using an instrument to measure the exterior. Although the mounting bolts on the cylinder side wall are screwed, it is quite difficult to tighten them evenly with multiple mounting bolts, and furthermore, the tip of the mounting bolt does not necessarily contact the outer circumferential surface of the mast perpendicularly. When screwing the mast, the parabolic reflector will rotate slightly from its best orientation.
This reduces the reception performance of SHF radio waves. This is especially true when the mast is prismatic rather than cylindrical. Therefore, in view of the above-mentioned circumstances, the present invention aims to make the azimuth and elevation angles of parabolic reflector installation accurate and easy. and a lower support member are slidably attached along the circumferential surface of the outer cylinder, and the tip of the handle supported by the lower support member is screwed to an adjustment member pivoted below the back surface of the parabolic reflector. be. That is, the azimuth angle of the parabolic reflector is adjusted by aligning the vertical support member to which the parabolic reflector is pivoted along the peripheral wall of the exterior tube, and the elevation angle is adjusted by threading the handle and the adjusting member. It is something.

Hereinafter, the present invention will be described in detail based on specific embodiments shown in the accompanying drawings.

As shown in Figure 1, the exterior cylinder 1 has a cylindrical shape with a bottom at the top, and is sized to fit onto the upper end of the mast 2.The side wall has a total of four cylinders, two each on the top and bottom, to be fixed to the mast 2. The mounting bolts 3 are screwed on, and further, vertical base walls 4 are provided protruding from both sides of the side walls, and horizontal elongated holes 5 are cut in the upper and lower portions of each of the vertical base walls 4.

The upper support member 6 and the lower support member 7 are made of sheet metal and have a U-shaped cross section, and the center portion thereof is formed into the same arcuate concave surface 8 as the circumferential wall of the outer cylinder 1, and the upper support member 6 and the lower support member 7 are horizontally arranged. Placed above and below, Figures 2 and 3
As shown in the figure, a vertical member 9 made of sheet metal and having a U-shaped cross section.
Connect with. Both ends of the upper support member 6 are pivotally connected above both vertical ribs 11 of a parabolic reflector 10, and the upper ends of a diagonal support member 13 in which a long hole 12 is cut are respectively pivotally connected below both vertical ribs 11. Bolts 14 are inserted through the elongated holes 12 and pivotally attached to both ends of the lower support member 7.

The base ends of support bolts 15 are pivotally mounted near both ends of the arcuate concave surfaces 8 of the upper and lower support members 6 and 7 on which the parabolic reflector 10 is attached so as to be rotatable in a horizontal plane, and the tips of the support bolts 15 are attached to the vertical base wall 4. is inserted into the horizontal elongated hole 5 of the support bolt 15, the arcuate concave surfaces 8 of the upper and lower support members 6 and 7 are brought into contact with the peripheral wall of the exterior cylinder 1, and the nut 16 is screwed onto the tip of the support bolt 15 to fix it. When fixing the parabolic reflector 10 to the exterior tube 1, as shown in FIGS. 2, 3, and 4, to prevent it from falling off,
A hook 17 protruding from the side wall of the vertical member 9 is attached to the vertical base wall 4.
Insert and lock into the long hole 18 cut in the center of.

A handle 20 is inserted and supported by the vertical wall 19 of the lower support member 7, a flat washer 21 is externally fitted to the support portion, and a cotter pin 22 is inserted into the shaft portion of the handle 20 so as to protrude.
The handle 20 is rotatable and is provided so as not to move forward or backward relative to the vertical wall 19. On the other hand, the base end of an adjusting member 24 is pivotally attached to the lower horizontal rib 23 of the parabolic reflector 10 so as to be rotatable in a vertical plane, and the tip of the handle 20 is screwed to the tip of the adjusting member 24. Alternatively, the tip of the adjustment member 24 may be formed into a male thread, and the tip of the handle 20 may be threaded with a female thread.

Further, the handle 20 tilts vertically within a vertical plane as the elevation angle changes, and a long hole is provided in the vertical wall 19 to allow the handle 20 to tilt. In order to sufficiently hold the handle by the vertical wall 19 when the handle is tilted up and down, the steps shown in FIGS.
As shown in the figure, the cylindrical body 25 is held horizontally and supported on the vertical wall 19 so as to be rotatable about a horizontal axis, and the handle 26 is inserted into the cylindrical body 25 so as to be rotatable and relative to the cylindrical body 25. It is impossible to advance or retreat. The one in FIG. 4 is another embodiment in which the elevation angle adjustment mechanism in FIG. 1 is replaced with another one, and the rest is the same. The handle 26 in FIG. 4 consists of an outer cylinder and a central threaded rod that passes through the outer cylinder.The tip of the central threaded rod is pivotally attached to the back surface of the parabolic reflector 10, and the outer cylinder is screwed near the tip of the central threaded rod. A cylindrical body 25 is attached to the outer surface near the tip of the central screw.

Next, the operation of the parabolic reflector will be explained.

As shown in FIG. 2, a parabolic reflector 10 is attached to the outer tube 1, and the outer tube 1 is attached to the upper end of the mast 2 approximately in the direction of the broadcasting satellite as shown in FIGS. 1, 2, and 4. Rough adjustment of the azimuth of the parabolic reflector 10 with respect to the broadcasting satellite is performed by screwing in four externally fitted mounting bolts 3. Next, loosen the nut 16, rotate the upper and lower support members 6 and 7 along the peripheral wall of the outer cylinder 1, move the tip of the support bolt 15 within the horizontal elongated hole 5, and finely adjust the azimuth. Secure with screws. To adjust the elevation angle of the parabolic reflector 10 with respect to the broadcasting satellite, loosen the bolt 14 and attach the diagonal support member 13.
The elongated hole 12 is guided by the bolt 14, the handles 20 and 26 are rotated to the right or left for fine adjustment, and the bolt 14 is screwed to fix the handle.

As described above, the present invention involves screwing mounting bolts onto the side wall of the exterior cylinder that is externally fitted to the upper end of the mast, and further protruding vertical base walls on both sides of the side wall of the exterior cylinder, and forming a circular concave surface that is the same as the peripheral wall of the exterior cylinder in the center. The upper support member and the lower support member formed in the above are arranged vertically and horizontally along the peripheral wall of the outer cylinder with the arcuate concave surfaces in contact with each other, and both ends of the upper support member are pivotally connected above the back surface of the parabolic reflector, Pivotally attach the upper end of a diagonal support member with an elongated hole cut into the lower side of the back surface of the parabolic reflector, insert bolts into the elongated hole and screw them onto both ends of the lower support member, and attach the bolts near both ends of the arcuate concave surface of the upper and lower support members. The base end of the support bolt is pivotally attached, and the tip is inserted into a horizontal long hole carved in the vertical base wall, and a nut is screwed together. This is an installation angle adjustment device for a parabolic reflector that is screwed together with an adjustment member pivotally attached to the bottom of the back surface of the reflector.The orientation of the parabolic reflector is adjusted by aligning the vertical support member to which the parabolic reflector is pivoted along the peripheral wall of the exterior tube. Since the elevation angle is adjusted by adjusting the angle and screwing the handle and adjustment member together, the installation angle of the parabolic reflector can be set accurately and easily.

[Brief explanation of the drawing]

The drawings show a specific embodiment of the present invention; FIG. 1 is a perspective view thereof, FIG. 2 is a side view showing the general outline of the vertical base wall 4 in FIG. 3 is a plan view of the lower support member 7 in FIG. 1 in the vicinity of the upper part taken along a horizontal plane and viewed downward, and FIG. 4 is another embodiment in which the elevation adjustment mechanism is changed from the one in FIG. A partially cross-sectional view of the adjustment mechanism in the changed side view, No. 5
The figure shows the lower support member 7 at the tip of the handle 20 in Figure 1.
FIG. 6 is an enlarged vertical cross-sectional view of another embodiment of the elevation angle fine adjustment section in which the part inserted into the vertical wall 19 is changed. 2... Mast, 1... Exterior cylinder, 3... Mounting bolt, 4... Vertical base wall, 8... Arc concave surface, 6... Upper support member, 7... Lower support member, 10... Parabolic reflector , 12...long hole, 13...diagonal support member, 14
... Bolt, 15 ... Support bolt, 5 ... Horizontal long hole, 16 ... Nut, 20, 26 ... Handle,
24...adjustment member.

Claims (1)

[Scope of utility model registration request] A mounting bolt is screwed onto the side wall of the exterior cylinder that is externally fitted to the upper end of the mast, and vertical base walls are provided protruding from both sides of the exterior cylinder side wall, and an upper support member and a lower support member are formed with the same circular concave surface as the exterior cylinder peripheral wall at the center. The members are arranged vertically and horizontally along the peripheral wall of the outer cylinder with their arcuate concave surfaces in contact with each other, and both ends of the upper supporting member are pivotally mounted above the back surface of the parabolic reflector, and a long hole is formed below the back surface of the parabolic reflector. Pivotally attach the upper end of the carved diagonal support member, insert a bolt into the elongated hole and screw it to both ends of the lower support member, and pivot the base end of the support bolt near both ends of the arcuate concave surface of the upper and lower support members. At the same time, the tip is inserted into a horizontal elongated hole carved in the vertical base wall and a nut is screwed together, the handle is supported by the lower support member so that it cannot move forward or backward, and the tip of the handle is pivoted below the back of the parabolic reflector. An installation angle adjustment device for a parabolic reflector, characterized by being screwed together with a member.