JP2573575Y2 - Cord connector in coupler - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord connector in a connector for connecting an electric cord in a connector such as a fire hose.

[0002]

2. Description of the Related Art In the event of a fire, as shown in FIG. 8, hoses 12 of several tens of meters or longer are sequentially connected to a fire pump 10 by a connecting member 13, and water or a digestive agent is emitted from a nozzle 14.
However, at the fire site, a large number of fire trucks are flooded and in a state of confusion, so that the communication device 11 can accurately issue a command between the firefighter operating a specific radiation nozzle 14 and the fire truck or headquarters. It is necessary to send and talk, and for this purpose, a signal line 15 passing through the inside of the hose 12 is used to transmit a signal between the speaker or microphone 17 of the fireman's helmet 16 and the communication device 11. Is being transmitted.

Conventionally, a cord connector as shown in FIGS. 6 and 7 has been used for such a hose connector 13. In these figures, the hose 12
The connector 20 is attached from the opening side of the first cylindrical portion 35 fitted into the end of the connector 20. The conductive cylinder 21 of the connector 20 is provided with a one-piece so that water and other digestives can easily pass therethrough.
The support tube 23 is held at the center of the first tube portion 35 by three support plates 23 at intervals of 20 degrees, and the waterproof tube 24 made of silicone rubber is fixedly fitted into the center hole 22 of the conductive tube body 21. Have been. A conductive pin 32 is inserted into the sliding hole 25 of the waterproof cylinder 24 via a grease or the like so as to be able to advance and retreat in a liquid-tight manner. A conductive base 27 is screwed into the other end of the conductive cylinder 21, the ground wire 18 is connected to the conductive base 27, and the signal line 15 is connected to the conductive contact at the tip via an insulating ring 29. 30. A conductive spring 31 is interposed between the conductive contact 30 and the sliding hole 25 to urge the conductive pin 32 forward. The same configuration is applied to the connector 20 on the second cylindrical portion 36 side.

In such a configuration, when the second cylindrical portion 36 is inserted into the flange 38 of the first cylindrical portion 35, the two are connected by the locking member 37. At this time, the horn-shaped contact valve portions 26 of the waterproof cylinder 24 are in close contact with each other against the elasticity of the rubber to provide a waterproof action, and the conductive pins 32 are in close contact with each other against the conductive spring 31. Electrically connected. Then, the signal lines 15 on both sides are coupled to each other. Further, the ground wire 18 includes the conductive base 27, the support plate 23, and the first cylindrical portion 3.
5, is connected to another ground wire 18 via the second cylindrical portion 36, the support plate 23, the conductive base 27, and the like.

[0005]

In the above-described conventional configuration, when the conductive pins 32 are to be connected to each other,
Grease or the like is interposed between the conductive pin 32 and the sliding hole 25 of the waterproof tube 24 because the conductive pin 32 moves forward and backward. The liquid leaks due to the use of the period, water enters the inside of the center hole 22, and the waterproof effect deteriorates. In addition, since the conductive pin 32 must be advanced and retracted in close contact with the slide hole 25, a strong conductive spring 31 is used, and therefore, a large force is required for connecting the connecting member 13. Further, there is a problem that the whole assembly is troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hose which can maintain a waterproof effect even when used for a long period of time and can easily connect hoses.

[0007]

According to the present invention, a connector 20 is provided at the open end of a cylindrical portion 35 for connecting the hose 12 so that the signal line 15 can pass therethrough.
In the connector 20, a spring pin body 40 is fixedly attached to the cylinder 24. The spring pin body 40 has a first pin 43 connected to the other connector 20 and a hose 12
A second pin 44 connected to the internal signal line 15 is independently provided at each end so as to be able to advance and retreat independently, and the spring pin body 40 is provided with a wall portion 42 at an intermediate portion of the conductive tubular portion 41 and has a This is a cord connector in the connector formed by shielding the first pin 43 and the second pin 44 so that liquid or the like does not pass therethrough.

[0008]

In such a configuration, the second cylindrical portion 36 and the first
When the cylindrical portion 35 is connected, the contact valve portions 26 of the waterproof cylinders 24 on both sides come into close contact with each other against the elasticity of the rubber to have a waterproof action, and the first pins 43 mutually resist the springs 45. The signal lines 15 on both sides in close contact are electrically coupled to each other. At this time, the conductive tube portion 41 does not move while being fixed to the waterproof tube 24. The ground wire 18 is electrically coupled to the other ground wire 18 via the conductive base 27, the first cylindrical portion 35, the second cylindrical portion 36, the conductive base 27, and the like. In this manner, communication between the operator of the radiation nozzle 14 and the operator of the fire pump 10 becomes possible. At the same time, water and other digestive fluids from the fire pump 10
2 to the nozzle 14 where it is discharged.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 12 denotes a fire hose, and a first tubular portion 35 fitted into an end of the hose 12.
And the second cylindrical portion 36 constitute the connecting member 13. The connectors 20 are respectively mounted from the opening sides of the first cylindrical portion 35 and the second cylindrical portion 36. The conductive tubular body 21 of the connector 20 is radially held at the center of the first tubular portion 35 by three support plates 23 spaced apart by 120 degrees.
A waterproof cylinder 24 made of silicone rubber is fixedly fitted to the center hole 22 with irregularities and an adhesive.

A sliding hole 25 is formed at the center of the waterproof tube 24, and a contact valve portion 26 which is spread in a trumpet shape is provided at a tip portion.
Are formed. A spring pin body 40 is fixedly attached to the sliding hole 25 with a ridge 47 and an adhesive. As shown in FIG. 4, the spring pin body 40 is provided with a wall portion 42 for shielding both sides at an intermediate portion of a conductive tubular portion 41 having both ends opened.
5 and the first pin 43 and the second pin 4 with the spring 46 interposed.
4 are inserted so as to be able to advance and retreat, and both ends of the conductive tubular portion 41 are swaged inward to prevent the conductive tubular portion 41 from coming off.

A signal line 15 passing through the hose 12
The ground wire 18 penetrates the synthetic resin code holder 19 and the conductive base 27, and the ground wire 18 is connected to the conductive spring body 60, and the signal wire 15 is connected to the crimp terminal 50. The crimp terminal 50, as shown in FIG.
The covering portion of the signal line 15 is fixed by crimping, the conducting wire portion is connected to the side by solder 53, caulking or the like, and the contact portion 51 is provided at the tip. Crimp terminal 5 to which this signal line 15 is connected
No. 0 is wrapped in an insulating cylinder 54, and only the contact portion 51 projects outside. As shown in FIG. 3, the insulating cylinder 54 is formed by overlapping a semicircle 55 and a semicircle 56 each having a concave portion 57 at the center. A conductive spring body 60 is fitted around the outer periphery of the insulating cylinder 54. As shown in FIG. 5, the conductive spring body 60 is formed by bending a conductive metal plate into a tubular shape, and
2 is bent in the shape of a letter, and a terminal piece 61 is provided.
3 is connected.

The insulating cylinder 5 thus assembled
4, the conductive spring body 60, etc.
1 protrudes slightly outside, and the conductive base 27
The signal line 15 and the ground line 18 are suspended in the air via the bush 63, and the insulating base 28 is injected into the conductive base 27 and fixed. The conductive base 27 is screwed in from the other end of the conductive cylinder 21. Then, the contact portion 51 of the crimp terminal 50 comes into contact with the second pin 44 of the spring pin body 40. When the screw is further screwed against the spring 46, the contact portion 51 and the second pin 44
Is always in contact with a constant force. At this time, in order to further ensure waterproofness, an O-ring is interposed in the screw portion and fixed with an adhesive. The same configuration is applied to the connector 20 on the second cylindrical portion 36 side.

In such a configuration, when the second cylindrical portion 36 is inserted into the flange 38 of the first cylindrical portion 35, the two are connected by the locking member 37. At this time, the contact valve portions 26 of the waterproof cylinders 24 on both sides come into close contact with each other against the elasticity of the rubber to provide a waterproof action, and the first pins 43 are connected to each other by the spring 45.
And are electrically connected to each other. At this time, the conductive tube portion 41 does not move while being fixed to the waterproof tube 24. In this way, the signal lines 15 on both sides are electrically coupled to each other. In addition, the ground wire 18 includes the terminal strip 61 of the conductive spring body 60, the leaf spring portion 62, the conductive base 27,
The support plate 23, the first cylindrical portion 35, the second cylindrical portion 36, the support plate 23, and the conductive base 27 are electrically coupled to the other ground wire 18.

When a plurality of hoses 12 are sequentially connected,
The signal line 15 and the ground line 18 are also electrically connected in sequence to enable communication between the operator of the radiation nozzle 14 and the operator of the fire pump 10. At the same time, water and other digestive fluids from the fire pump 10 are sent to the nozzle 14 through the hose 12 and are discharged therefrom. When the connecting member 13 is detached, when the detaching ring 39 is pushed into the flange 38, the engaging member 37 is disengaged, the first tubular portion 35 and the second tubular portion 36 are separated, and the signal line 15 is removed.
The ground wire 18 is also electrically disconnected.

[0015]

(1) The spring pin body 40 is a cylinder 24
, And the contact with the other connector 20 and the contact with the signal line 15 are separated from each other, so that the effect such as waterproofing is not deteriorated even by long-term use. (2) The compression force of the spring 45 for making the connectors 20 come into contact with each other can be small, and the connection and removal of the connector 13 can be facilitated. (3) The signal line 15 and the ground line 18 are
In addition, the cylinder 24 and the spring pin body 40 are separately assembled to the conductive cylinder 21, and these are simply screwed into each other, which simplifies the entire assembly.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a cord connector in a connector according to the present invention.

FIG. 2 is a sectional view of the crimp terminal in FIG.

3A and 3B show the insulating cylinder in FIG. 1, wherein FIG. 3A is a side view before assembling, and FIG. 3B is a cross-sectional view taken along line aa after assembling.

FIG. 4 is a sectional view of a spring pin body in FIG. 1;

5A and 5B show a conductive spring body in FIG. 1, wherein FIG. 5A is a cross-sectional view and FIG. 5B is a side view.

FIG. 6 is a cross-sectional view of a cord connector in a conventional connector.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is an explanatory diagram of a call state at the time of firefighting.

[Explanation of symbols]

10: Fire pump, 11: Communication device, 12: Hose, 13
... Connector, 14 nozzle, 15 signal line, 16 helmet, 17 speaker, 18 ground wire, 19 cord holder, 20 connector, 21 conductive cylinder, 22
... Center hole, 23 ... Support plate, 24 ... Waterproof cylinder, 25 ... Sliding hole,
26 contact valve part, 27 conductive base, 28 insulating filler, 29 insulating ring, 30 conductive contact, 31
... conductive spring, 32 ... conductive pin, 33 ... hollow part, 35
.., A first tubular portion, 36... A second tubular portion, 37.
Flange, 39 ... Remove ring, 40 ... Spring pin body, 41
... conductive cylinder part, 42 ... wall part, 43 ... first pin, 44 ...
Second pin, 45 spring, 46 spring, 47 ridge,
50: crimp terminal, 51: contact part, 52: stopper, 53
... Solder, 54 ... Insulating cylinder, 55 ... Semicircle, 56 ... Semicircle, 57 ... Concave part, 60 ... Conductive spring body, 61 ... Terminal piece,
62: leaf spring portion; 63: bush.

Claims (2)

(57) [Scope of request for utility model registration] 1. A connector 13 provided with a connector 20 at an open end of a cylindrical portion 35 for connecting a hose 12 so that a signal line 15 can pass therethrough.
, A spring pin body 40 is fixedly attached to the first connector 20 to be connected to the other connector 20.
A pin 43 and a second pin 44 connected to the signal line 15 in the hose 12 are provided at both ends independently of each other so as to be able to advance and retreat independently. The spring pin body (40) is connected to the conductive cylinder (4).
1 is provided with a wall portion 42 at an intermediate portion, and first pins 43 at both ends are provided.
2. A cord connector in a connector according to claim 1, wherein said cord connector is shielded from said second pin.