KR200234623Y1 - Connecting system for cable divergence - Google Patents

Abstract

The present invention relates to an intermediate branch apparatus used for branching a signal from the middle of a coaxial cable transmitting a signal to a subscriber's house in a television joint reception system.

Inserted into the middle part of the coaxial cable line for signal transmission and providing any number of branch terminals through a branch circuit, the center contact directly connected to the center conductor of the coaxial cable is accepted and the coaxial cable terminal part Integrate the cell to be fitted with the mounting fasteners on the outer wall, or to install the main body case incorporating the center conductor of the coaxial cable to the outer wall of the cell fitted with the fasteners mounted on the coaxial cable terminal It is characterized by.

The connection process between the coaxial cable and the main body case is simple and effective.

Description

Interconnecting device for coaxial cable for signal transmission {Connecting system for cable divergence}

The present invention relates to an intermediate branch apparatus used for branching a signal from a middle of a coaxial cable of a trunk which transmits a signal to a subscriber's house or branching the trunk in multiple directions in a television common reception system or the like.

In general, a television joint reception system (hereinafter referred to as a CATV system) receives a television broadcast at the head end, transmits the received signal to a subscriber's home using a coaxial cable, and distributes the television signal to a plurality of subscribers. .

In this case, the received signal is supplied along a certain route by using a coaxial cable of a certain standard, and a separate intermediate branch connecting the coaxial cable connected to each home and the branch coaxial cable connected to each trunk coaxial cable is installed to install the received signal. To be transferred to.

11 is a plan view of a conventional intermediate branch device 60 and an exploded side view of the terminal portion of the coaxial cable 61.

This device is screwed through a connector body 68 to a male connector 62 formed in a main body case 65 by a male connector 62 mounted on a terminal portion of a coaxial cable 61, commonly referred to as tap off. Combine.

The male connector 62 mounted on the terminal portion of the coaxial cable 61 is covered with the fastener 63 in a state where the center conductor 64 of the coaxial cable 61 protrudes, and the intermediate branch device 60. The water polo 66 formed in the main body case 65 is configured in a tubular shape so as to accommodate the male connector body 68.

The water hole 66 is provided with a through hole (not shown) for receiving the center contact 67 of the connector body 68. Therefore, in order to assemble the intermediate branch device 60, first, the connector body 68 is screwed to the main body case 65, and then the coupling bracket 63 of the coaxial cable 61 is screwed and connected.

However, such a connection operation is complicated assembly process and the number of parts required is increased, which leads to a decrease in work efficiency and a rise in manufacturing cost, which lowers the competitiveness of the product.

In addition, when screwing the connector main body 68 to the water port 66 of the main body case 65, its coupling force is weak and the electrical contact resistance is increased.

In addition, the sealing property is also deteriorated, and if it is tightened conversely, the thread of the water polo port 66 may be broken.

In addition, since the work is mainly performed at a high place, there is a risk of dropping when handling the connector main body 68 separately separated, and thus the convenience of work cannot be provided due to the trouble of occurrence or recovery of parts.

The present invention aims to solve the conventional problems as described above and to simply form a configuration of the mechanical connection mechanism of the main body case of the coaxial cable and the intermediate branch device.

The present invention achieves the object of the invention by the following configuration, respectively.

A first design is to accept a center contact directly inserted into the center conductor of the coaxial cable in inserting an arbitrary number of branch terminals through a branch line and inserted in the middle of a coaxial cable line for signal transmission. It is to install a main body case which is integrally provided with an outer wall of the cell fitted with the fasteners mounted on the coaxial cable terminal,

A second design is to insert an arbitrary number of branch terminals through a branch circuit and be inserted in an intermediate portion of a coaxial cable line for signal transmission, where the center conductor of the coaxial cable is accommodated and mounted in the corresponding coaxial cable terminal portion. The main body case which integrates the cell which is matched with the said fastening tool to the outer wall is installed.

In addition, the third design, in addition to the first design or the second design, the outer shell and the outer conductor of the coaxial cable are connected to the connection aid which is received between the fastener and the cell when the fastener is fitted with the cell of the main body case. To be fixed by pressure,

In addition, the fourth design, in addition to the third design, the connection aid is a gasket which is in close contact with the outer shell of the compressed coaxial cable when the fastener is screwed into the cell of the main body case, and in the same direction as the long side of the coaxial cable. It is provided with a tapered clamp which is pressed together with the inner sleeve in which the tip is inserted inside the outer conductor of the coaxial cable and closely adheres to the outer circumferential surface of the outer conductor.

In addition, the fifth design is characterized in that in addition to the first design or the second design, a spanner hook using a spanner is installed on the outer circumferential surface of the cell integrated in the main body case during the fastening of the fastener.

1 is an exploded perspective view of each part of the intermediate branch device according to the present invention

Figure 2 is a perspective view showing the connection relationship between the coaxial cable, the relay pin and the branch circuit board of the intermediate branch device according to the present invention

3 is an exploded perspective view of a cell, a fastening tool, and a connecting aid for connecting a coaxial cable and a main body case;

Figure 4 is a plan view of the coaxial cable connected to the main body case

5 is a front view of a state in which a coaxial cable is connected to the main body case;

Figure 6 is a side view of the coaxial cable connected to the body case

7 is a circuit block diagram showing an electrical connection relationship between a coaxial cable and a branch circuit.

Figure 8a is a partial longitudinal side view of the relay pin disassembled

FIG. 8B is a partial end side view showing the assembled state of FIG. 8A

Figure 9 is a partial longitudinal side view of a pair of relay pins accommodated in a holder;

10 is a longitudinal sectional view of an essential part showing a connection state of a coaxial cable and a cell

11 is an exploded side view of a conventional planar intermediate branch device and a cable terminal portion connected thereto;

※ Explanation of the code about the main part ※

1: body case 2: bolt 3: cover

4: outer wall 5: through-hole 6: cell

6A: Spanner hanger 7: Fastening bracket 8: Coaxial cable

9: center contact 10: clamp 11: branch terminal

13 Holder 13A: Opening 13B: Storage

14: Relay pin 15: Pin 17: Vis hole

18: branch cable 19: connector 21: substrate

22: branch circuit 23: I / O terminal 24: connection hole

31: jacket 32: outer conductor 33: insulator

34: center conductor 40: connection aid 41: 0 ring

42: gasket 43: color 44: 0 ring

45: washer 46: taper clamp 46A: slitting

46B: Tapered surface 47: Inner sleeve 48: Outer sleeve

49: Insulation color 51: Sleeve 51A: Taper hole

51B: Screw part 51C: Cylindrical part 52: Split sleeve

52A: Contact part 52B: Slitting 52C: Screw part

1 is an exploded perspective view showing an intermediate branch device of the present invention.

In this figure, the main body case 1 is a box-shaped case made of aluminum die casting or the like, and has an example in which the lid 3 is engaged and fixed by using three bolts 2.

Through-holes 5 are provided on the left and right sides of the outer wall of the main body case 1, and the cell 6 is fixed to this portion. The cell 6 is fixed in advance to the outer wall 4 of the main body case 1 by welding or integral molding.

On the outer circumferential surface of the cell 6, a spanner hanger 6A for using a spanner is formed.

This spanner hanger 6A has two sides in the illustrated example, but may be a polyhedron such as four or six sides.

In addition, as shown in the right side of the drawing, the cell 6 is configured such that the fastening bracket 7 mounted on the coaxial cable 8 is fitted by screwing or the like.

The center conductor of the coaxial cable 8 penetrates through the inside of the fastening tool 7, and the center contact 9 is fixed to the tip thereof by caulking or the like.

The center contact 9 is configured to protrude therein through the through hole 5 of the main body case 1 when the fastening bracket 7 is fastened to the cell 6.

On the other hand, the cover 3 is provided with four branch terminals 11 that accept terminals of coaxial cables (not shown) to be connected to the subscriber's home as an example.

On the other hand, a holder 13 made of an insulator such as plastic is housed inside the main body case 1. The relay pins 14 are accommodated at both ends of the holder 13. The relay pins 14 are formed by molding conductive metal such as copper (copper). The relay pin 14 receives the center contactor 9 connected to the center conductor of the coaxial cable 8 in the lateral direction, while electrically connecting the pin 15 to the branch circuit.

In addition, the holder 13 is fastened to the screw hole 17 provided in the main body case 1 using the pin 15, and is fixed using the screw 16.

The main body case 1 houses a branch circuit 22 mounted on a substrate 21, and an input / output terminal 23 is provided on the substrate 2. The pin 15 of the relay pin 14 is inserted into the connection hole 24 of the input / output terminal 23, and the electrical connection between the center contact 9 and the branch circuit 22 is achieved.

2 shows a configuration for electrically connecting the center conductor 34 of the coaxial cable 8 via the substrate 21 fixed to the lid 3 and the relay pin 14 therewith.

The outer shell 31 of the coaxial cable 8 is cut to a predetermined length, and the outer conductor 32 is exposed.

In addition, in order to fix the outer conductor 32 using the cell 6, fastener 7, or the like shown in FIG. 1, the insulator is removed to the outside from the inside of the outer conductor 32 to the outside.

The center contact 9 in compression contact with the tip of the center conductor 34 is inserted in the lateral direction of the relay pin 14 as shown.

The pin 15 of the relay pin 14 faces in a direction orthogonal to the axial direction of the center contact 9.

Then, it is inserted into the connection hole 24 of the input / output terminal 23 fixed to the substrate 21. That is, when the cover 3 is removed by releasing the bolt 2 from the body case 1 shown in FIG. 1, the substrate 21 fixed thereto is separated from the body case 1 together with the cover 3.

At this time, the pin 15 of the relay pin 14 is pulled out of the input / output terminal 23 so that the electrical connection therebetween is cut off.

In addition, a cover 25 for protecting a circuit is covered with the substrate 21 shown in FIG.

3 shows an exploded perspective view of the fastener 7 and the connection aid 40 mounted at the end of the coaxial cable.

As shown, the connection aid 40 is housed inside the fastener 7, which is coupled to each part of the cable. Then, the fastening bracket 7 is screwed into the cell 6 so that the coaxial cable and the main body case 1 are connected.

This connection aid 40 is a gasket fitted by being in close contact with the outer ring of the outer shell of the coaxial cable inside the fastening bracket 7 and the ring 0 which is fitted on the outer circumference of the fastening tool 7. It consists of a 42 and a collar 43, a 0 ring 44, a washer 45, a tapered clamp 46, an inner sleeve 47 and an outer sleeve 48.

The collar 43 serves as a spacer for compressing the gasket 42 when attaching the fastener 7 and attaching it to the outer shell of the coaxial cable.

The washer 45 is pressed against the collar 43 by the fastening of the fastening tool 7, and serves to press the tapered clamp 46 between the inner sleeve 47 and the outer sleeve 48.

The tapered clamp 46 has a slitting 46A as shown in the drawing, and the unevenness is formed on the inner surface thereof. It is fitted to the outside of the outer conductor of the coaxial cable and is configured to hold the outer conductor with strong compression with the inner sleeve 47 inserted inside the outer conductor.

The insulating collar 49 serves to support the center contact of the coaxial cable.

In addition, the cross-sectional configuration after assembling will be described in detail with reference to FIG. 10.

4 is a front view when the coaxial cable 8 is connected to the main body case 1 of the intermediate branch device of the present invention.

As shown in this figure, the fastening brackets 7 installed in the terminal portion of the coaxial cable 8 are screwed to the cells 6 installed on both sides of the main body case 1, so that the coaxial cable 8 is connected. .

5 shows a front view of the intermediate branch device shown in FIG.

As shown in this figure, the coaxial cable 8 is linearly connected to the main body case 1 from left and right, and a messenger wire (not shown) supporting the coaxial cable 8 is fitted by the clamp 10. .

This clamp 10 is integrated with the upper surface of the main body case 1, and is used to support and fix the main body case 1 to the messenger clamp.

At the bottom of the main body case 1, four branch cables (not shown) are connected through the branch terminal 11.

FIG. 6 shows a side view seen from the plane perpendicular to the cable axis of the intermediate branch device shown in FIGS. 4 and 5.

As shown in this figure, the clamp 10 supports the body case 1 by inserting a messenger wire (not shown) into the body case 1 and the plate 10A by fastening the plate 10A with the bolt 10B. It is done.

7 is a block diagram showing a connection state of a branch circuit and a coaxial cable.

As shown in the drawing, the pair of input / output terminals 23 described above are provided in the branch circuit 22.

Four branch terminals 11 are provided, and the center contact 9 of the coaxial cable 8 is electrically connected to the input / output terminal 23 through a relay pin (not shown) as described above. The branch cable 18 is connected to the branch terminal 11 via the connector 19.

8 shows a specific side view of the relay pin.

As shown in Fig. 8 (a), the relay pin 14 is configured to screw the sleeve 51 and the split sleeve 52 received from both sides with respect to the base 15A of the pin 15.

When the pin 15 and the sleeve 51 are integrally formed, it is possible to configure the split sleeve 52 by screwing.

The sleeve 51 is provided with a taper hole 51A to receive the center contact of the coaxial cable, and forms a threaded portion 51B on the outer circumferential surface of the cylindrical portion 51C, and the base 15 of the pin 15 on the base 15A. Screw is tightened.

The split sleeve 52 is provided with a slitting 52B in the contact portion 52A.

This part has the action of a spring to insert the center contact with sufficient pressure to accommodate the center contact of the coaxial cable to achieve electrical connection.

When the screw portion 52C provided on the outer circumferential surface thereof is screwed into the base 15A of the pin 15, the contact portion 52A is inserted into the cylindrical portion 51C of the sleeve 51.

FIG. 8 (b) shows a side view of the relay pin 14 assembled as described above, and a portion of the base 15A has a cross-sectional structure.

As shown in this figure, the peripheral portion of the tapered hole 51A of the sleeve 51 is projected laterally from the base 15A of the pin 15 exactly. The relay pin 14 shown in FIGS. 1 and 2 is assembled in this manner.

9 shows a partial longitudinal sectional view when receiving the relay pin into the holder.

The holder 13 is composed of two divided insulators as described with reference to FIGS. 1 and 2, and is installed at both ends thereof, and the base 15A of the relay pin 14 is accommodated in the receiving portion 13B. have.

The sleeve 51 of the relay pin 14 is disposed so as to face the wrapper-shaped opening 13A provided at both ends of the holder 13. This inserts the center contact of the coaxial cable as shown in Fig. 1 on both sides of the holder 13.

Fig. 10 is a longitudinal sectional view of the fastening bracket mounted on the coaxial cable and screwed into the cell of the main body case.

As shown in this figure, the outer shell 31, the outer conductor 32, and the insulator 33 of the coaxial cable 8 are each cut off at a predetermined length.

And as shown in this figure, the center contact 9 is compressed and connected in the radial direction to the edge part of the center conductor 34 of a coaxial cable.

The end of the insulator 33 is cut short enough so that the inner sleeve 47 can be inserted inside the outer conductor 32.

The outer sleeve 48 is fixed to the right end of the inner sleeve 47. In other words, the end portion 48B of the outer sleeve 48 is caulked to constitute the inner sleeve 47 and the outer sleeve 48 integrally.

The outer conductor 32 is inserted between its inner sleeve 47 and the outer sleeve 48. The tapered surface 46B is tapered on the outer sleeve 48 by pressing the tapered clamp 46 arranged to surround the outer conductor 32 by the collar 43 and the washer 45 on its left side. 48A) is pressed and attached, the diameter is reduced to fasten the outer conductor (32).

The fastener 7 is screwed into the cell 6 as shown, and is screwed into the cell 6 while maintaining the waterproofing effect by compressing the zero ring 41 fitted to the outer circumferential surface thereof.

When the fastening bracket 7 is fastened, the gasket 42 is compressed by being pressed in the direction of the collar 43 and is pressed while being strongly pressed on the outer circumferential surface of the outer shell 31 of the coaxial cable 8.

Thereby, waterproofness is maintained between the fastening tool 7 and the outer shell 31 of the coaxial cable 8. In addition, the zero ring 44 fitted to the collar 43 and the washer 45 is compressed and pressed to the outer conductor 32 to maintain waterproofness therebetween.

When the fastening bracket 7 is fastened to some extent, the gasket 42 is compressed to some extent, and the end portion 7A provided on the inner circumferential surface of the fastening bracket 7 is brought into contact with the end 43A of the collar 43, so that the collar 43 Press firmly in the direction of the cell 6.

The collar 43 thereby presses the tapered clamp 46 through the washer 45.

As a result, the outer sleeve 48 and the inner sleeve 47 are integrated so that they come into contact with the end 6B of the cell 6. Therefore, the fastening force of the fastening tool 7 exerts an effective force on the tapered clamp 46.

By such a configuration, the outer shell 31 and the outer conductor 32 of the coaxial cable are firmly pressed to the cell 6 side by the fastening of the fastening tool 7 and fixed.

Moreover, unlike the connector for connecting general coaxial cables to each other, the center conductor 34 itself is configured to project the center connector 9 into itself inside the body case 1 shown in FIG.

The present invention configured as described above, as shown in FIG. 1, is used for transmitting a coaxial cable 8, for example, to a subscriber of a television common reception system.

The intermediate branch device is provided with an appropriate number of branch terminals 11 for branching the television signal to the subscriber's house in the middle of the coaxial cable 8 thereof.

The branch circuit 22 for the branching of the main body case 1 of the intermediate branch device is accommodated.

The coaxial cable 8 is cut at the part of its intermediate branch device, the center conductor is electrically connected to the branch circuit 22 directly or via a center contact 9, and the outer conductor is connected to the cell through the fastener 7. It is electrically connected to (6).

Since the fastening bracket 7 mounted on the coaxial cable 8 is fitted to the cell 6 integrated into the main body case 1 of the intermediate branch device, the end of the coaxial cable 8 and the main body case 1 The connection mechanism is simplified, the assembly workability is good and the sealing property is excellent.

That is, the cell 6 and the body case are integrated so that the electrical resistance is small and the sealing is complete.

The direct connection of the center contact 9 to the center conductor of the coaxial cable 8 means that the center conductor of the coaxial cable 8 is connected to the relay pin 14 without using a connector member or the like (without use). Means that.

The effect of minimizing the electrical connection portion and reducing the connection loss between the center conductor of the coaxial cable 8 and the branch circuit 22 can be obtained.

In addition, if the configuration in which the center conductor of the coaxial cable 8 is directly inserted into the relay pin 14 is connected, the connection loss can be reduced.

The detachable attachment of the center contact 9 to the relay pin 14 is for enabling the detachment between the coaxial cable 8 and the main body case 1 for the maintenance of the coaxial cable 8 or the like.

In addition, since the cell 6 is integrated into the main body case 1, complicated work as described in the prior art is unnecessary.

A pair of relay pins 14 are disposed inside the through hole 5 for connecting the coaxial cable formed in the main body case 1, and the pins 15 connected to the branch circuits 22 are branched circuits ( When facing toward the substrate 21 of the 22, the branch circuit 22 can be accommodated inside the main body case 1, and moved in the direction of the pin 15 to be attached and detached.

When the fastening bracket 7 is fitted with the cell 6 of the main body case 1, the outer shell of the coaxial cable 8 is connected by the connection aid which is received between the fastening bracket 7 and the cell 6. When the outer conductor is pressurized and fixed, the fastener 7 is fastened toward the cell 6 to achieve electrical connection and mechanical fixation of the coaxial cable 8 at once.

In addition, when the spanner hook 6A is used, the force for twisting the screw of the fastener 7 toward the cell 6 can be appropriately adjusted, and the workability can be improved to prevent the screw from being damaged.

In addition, although the fastening tool 7 and the cell 6 are fastened by using a spanner, as shown in FIG. 1, a spanner is mounted to the spanner hook 6A of the fastener 7 and the cell 6, respectively. By performing the fastening operation, the work in a high place can be easily performed.

The present invention is suitable for branching coaxial cables for signal transmission of a television co-receiving system, but it can be widely used for a device for branching signals in a signal transmission path using other coaxial cables.

According to the present invention as described above, by simply configuring the connection structure between the end of the coaxial cable and the main body case, the number of parts becomes considerably smaller and the parts management becomes easier, resulting in improved work efficiency and reduced manufacturing cost. It can be improved, and by excluding the use of the connector is configured independently, the coaxial cable connection process is greatly shortened and easy to have the effect of convenience and stability in the work.

Claims (4)

Inserting an intermediate portion of a coaxial cable line for signal transmission and providing any number of branch terminals through a branch circuit; A coaxial cable for signal transmission, comprising: a main body case incorporating a cell contact fitted with a fastening bracket mounted on a corresponding coaxial cable terminal part by receiving a center contact directly connected to the center conductor of the coaxial cable; Intermediate branch device. The method of claim 1; The outer shell and outer conductor of the coaxial cable are press-fixed by the connecting aid accommodated between the fastener and the cell when the fastener is fitted with the cell of the body case. Branching device. The method of claim 2; The connection aid is a gasket which is pressed against the shell of the compressed coaxial cable when the fastener is screwed into the cell of the main body case, and is pressed in the longitudinal direction of the coaxial cable having the same shape, and the tip is inserted into the outer conductor of the coaxial cable. An intermediate branch device of a coaxial cable for signal transmission, characterized in that it has a tapered clamp that is in close contact with the outer circumferential surface of the outer conductor in cooperation with the inner sleeve. The method of claim 1; An intermediate branch device of a coaxial cable for signal transmission, characterized in that a spanner hook is provided on an outer circumferential surface of a cell integrated in a main body case so that a spanner can be used during a fastening operation of the fastening tool.