JPH048657Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a coupling device for a split parabolic reflector, and more specifically, in a parabolic reflector that can be split for convenience in transportation, This invention relates to an improvement of a coupling device.

[Conventional technology]

A schematic configuration of a coupling device in a conventional split type parabolic reflector of this type is shown in FIGS. 4 and 5.

That is, first of all, in FIG. 4, parabolic reflecting mirror bodies 11 and 12 that are mutually divided have joining flanges 13 and 14 at the divided parts, respectively, and one joining flange 13 has a positioning hole at a predetermined position. 15, and a positioning bush 16 with a flange 18 having a separately provided mounting hole 17 is fitted into the positioning hole 15 so that its tip 16a protrudes toward the dividing surface 13a, In addition, the other coupling flange 14 has a positioning hole 20 at a corresponding position from the dividing surface 14a side.
A coupling screw hole 21 is formed coaxially therewith.

To assemble the mutually divided parabolic reflector bodies 11 and 12, as shown in FIG. By inserting the mirror into the positioning hole 20 of the flange 14 and abutting the respective split surfaces 13a and 14a, the mirror surfaces 11a and 12a of each reflecting mirror are positioned flush, and then the mirror is inserted through the mounting hole 17 of the positioning bush 16. , flat washer 23, spring washer 2
A connecting bolt 22 with 4 is fastened to the connecting screw hole 21.

[Problem that the invention attempts to solve]

However, in the conventional coupling device configured as described above, since the tip 16a of the positioning bush 16 protrudes from the dividing surface 13a of one coupling flange 13 at the time of division,
When transporting, etc., this protruding tip 16a
The presence of the bolt 16a becomes a hindrance, and in some cases, the tip 16a may hit other objects and be damaged.Also, since the connecting bolt 22 has to be removed one by one in the split state, there is a risk of accidentally losing it. It had the following problems.

[Means for solving problems]

Therefore, the object of this invention is to provide a coupling device for split parabolic reflectors of this type in which there is no positioning bush protruding from the split surface and there is no need to remove the coupling bolts one by one. be.

In order to achieve this purpose, the split parabolic reflector coupling device according to this invention has one coupling flange having one positioning hole formed at a predetermined position and an end opposite to the split surface side. a positioning bush which has a base end threaded part that is threadedly engaged with the threaded end of the coupling bolt, and which is fitted into the positioning hole so that the front end can freely protrude and retract toward the dividing surface side; and a positioning bush that holds the positioning bush. , a holder fixed to the one coupling flange, and a compression spring provided outside the tip of the positioning bush for drawing the tip of the positioning bush into the dividing plane; the other positioning hole is formed corresponding to the one positioning hole and receives the tip of the positioning bush protruding from the one positioning hole, and the tip is received in the positioning hole; A coupling screw hole is provided so that the coupling bolt can be fastened.

[Effect]

That is, in the case of this invention, the tip of the positioning bush provided on the coupling flange is retracted into the split surface, so the tip does not protrude beyond the split surface, and the coupling bolt is attached to the positioning bush. Since the connecting bolt is held in such a way that it cannot be removed, there is no risk of losing the connecting bolt.

〔Example〕

Hereinafter, one embodiment of the split-type parabolic reflecting mirror coupling device according to this invention will be described in detail with reference to FIGS. 1 to 3.

1 and 2 are sectional views showing the general structure of the coupling device according to this embodiment in a divided state and a coupled state, respectively, and FIG. 3 is a partially enlarged perspective view of the main parts of the same. In the drawings, the same reference numerals as in each of the figures of the conventional example indicate the same or corresponding parts.

In this embodiment, as shown in FIGS. 1 and 3, a hollow portion 27 is provided inside through the proximal threaded portion 26, and a stepped portion 28 and a collar portion 29 are provided in the intermediate portion.
The positioning bush 25 formed with the above-mentioned positioning bush 25 is fixed to the coupling flange 13, and the tip 25a of the positioning bush 25 is slid in and out of the positioning hole 15 of the one coupling flange 13 using a holder 30 via a compression spring 31. The stopper pin 25b, which is freely held and protrudes from the flange 29, is inserted into the guide groove 30a with the locking edge 30b of the holder 30.
By engaging the stopper pin 25b with the locking edge 30b against the elastic force of the compression spring 31, the tip portion 2 can be slid freely.
5a so as to protrude toward the dividing surface 13a,
Further, the end screw 32a of the coupling bolt 32 can be tightened into the mounting screw hole 21.

That is, in this case, when the respective parabolic reflector bodies 11 and 12 are divided, as shown in FIG. The connecting bolt 32 is drawn into the dividing surface 13a of the connecting flange 13, and the connecting bolt 32 can be maintained without being pulled out from the positioning bush 25.

Therefore, in the case of this embodiment configuration, in order to assemble each of the divided parabolic reflecting mirror bodies 11 and 12,
As shown in Figure 2, first, one of the coupling flange 1
The positioning bush 25 of No. 3 is pushed into the dividing surface 13a against the compression spring 31, and the stopper pin 25b is pulled out of the guide groove 30a of the holder 30 and locked to the locking edge 30b. The tip part 25a is the dividing surface 1
It can be made to protrude to the 3a side.

In this state, the positioning hole 20 formed in the dividing surface 14a of the other coupling flange 14 is
The mirror surfaces 11a and 12a of each reflecting mirror are positioned flush by fitting into the distal end 25a protruding from the dividing surface 13a of the one coupling flange 13 and abutting the respective dividing surfaces 13a and 14a. Then, by tightening the threaded end portion 32a of the connecting bolt 32 with the flat washer 23 and the spring washer 24 into the connecting screw hole 21, the parabolic reflector bodies 11 and 12 can be easily connected to each other. It is.

[Effect of idea]

As detailed above, according to this invention, each of the divided parts is provided with a connecting flange, and each of these connecting flanges is positioned by a positioning button and a positioning hole into which the tip of the connecting flange is inserted. , in a split parabolic reflector that can be assembled and connected using connecting bolts, one connecting flange has one positioning hole formed at a predetermined position, and a connecting bolt is provided at the end opposite to the dividing surface side. a positioning bushing having a proximal threaded part that is threadedly engaged with the distal end threaded part, and which is inserted into the positioning hole so that the distal end part can freely protrude and retract toward the dividing surface side; A holder fixed to the coupling flange, and a compression spring provided outside the distal end of the positioning bush for drawing the distal end of the positioning bush into the dividing plane, the other coupling flange having the formed corresponding to one positioning hole,
the other positioning hole for receiving the tip of the positioning bush protruding from the one positioning hole, and the tip being received in the positioning hole;
Since the coupling screw hole formed to be able to tighten the coupling bolt is provided, the tip of the positioning bushing can be retracted freely into the dividing surface, so that the tip does not protrude from the dividing surface. Therefore, it is possible to eliminate problems such as getting in the way of transportation or being damaged, and since the connecting bolt is connected to the positioning bushing and cannot be removed, there is no chance of the connecting bolt being separated and lost. It has the advantage that there is no risk of such damage, and furthermore, it is easy to divide and assemble, and the structure is relatively simple and can be provided at low cost.

[Brief explanation of the drawing]

FIGS. 1 and 2 are sectional views showing a schematic structure of an embodiment of the coupling device according to the invention in a divided state and a coupled state, respectively, and FIG. 3 is a partially enlarged perspective view of the main parts of the same, and FIG. FIGS. 4 and 5 are sectional views showing the conventional coupling device in a divided state and a coupled state, respectively. 11, 12... Mutually divided parabolic reflecting mirror bodies, 11a, 12a... Mirror surface of each parabolic reflecting mirror body, 13, 14... Joining flange, 13
a, 14a...dividing surface of each coupling flange, 15...
...Positioning holes of one coupling flange, 20, 21
...Positioning hole of the other coupling flange, coupling screw hole, 25...Positioning bush, 25a...Tip of the positioning bush, 25b...Stopper pin, 26, 27...Proximal threaded part of the positioning bush, cavity part , 30...Holder, 31...Compression spring, 32...Connection bolt, 32a...Top threaded portion of the connection bolt.

Claims (1)

[Claims for Utility Model Registration] In a split parabolic reflector in which each of the divided parts is provided with a connecting flange and each of these connecting flanges can be combined and assembled, one of the connecting flanges has a shape formed at a predetermined position. a positioning hole on one side, and a proximal threaded portion screwed into the tip threaded portion of the coupling bolt at the end opposite to the split surface side, and is inserted into the positioning hole so that the tip portion is placed on the split surface side. a holder that holds the positioning bush and is fixed to the one coupling flange; and a holder that is provided on the outside of the tip of the positioning bush and that divides the tip of the positioning bush. a compression spring for retracting into the plane, and the other coupling flange has a second coupling flange formed corresponding to the one positioning hole to receive the tip of the positioning bush protruding from the one positioning hole. A coupling device for a split parabolic reflector, comprising: a positioning hole; and a coupling screw hole formed so that the coupling bolt can be tightened with the tip end received in the positioning hole.