JPS5920136A - Light source apparatus of endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope light source device equipped with a socket to which a coil lid of an endoscope is connected.

The connector of the endoscope has a light guide tube, a terminal pin for electrical connection to the air supply port, etc. protruding from the connector, and the socket of the light source device has a light guide tube insertion hole, an air supply tube, and a connection terminal. etc. are provided. By connecting the connector to the socket, the endoscope and the light source device are optically, electrically, and mechanically connected to form an optical path, an electrical signal path, and an air supply path. .

By the way, the above air supply system path needs to be configured so that the air supply pipe fixed to the socket body and the air supply port body of the connector are airtightly connected only by the insertion operation in the axial direction. The tip portion, ie, the connection portion with the air supply port body, is formed by a comb. The air supply connection rubber having a tapered hole is integrally molded at the tip of the air supply pipe and the tab, so that the air supply port body is press-fitted into the tapered hole of the air supply connection rubber, and the connection between the two is maintained airtight. It is composed of

However, the connector of the endoscope and the socket of the light source device are often inserted and removed, and even when using multiple endoscopes of different types, the connectors are connected to the socket of the common light source device. For use by connecting to
There is a drawback that the air connecting comb of the air pipe connected to the air inlet body is worn out, resulting in loss of airtightness and leakage from the connection.

Therefore, if the air supply connecting rubber deteriorates by 8 mm, repair work is required to replace it with a new air supply connecting rubber, but this air supply connecting rubber is integrally molded at the tip of the air pipe. Further, the air pipe is integrally incorporated within the socket body.

Therefore, when replacing the air supply connection rubber, it is necessary to remove and disassemble the entire front surface of the light source device (from the socket) and replace the entire air supply pipe, which is extremely difficult.
It takes a lot of effort.

This invention was made in view of the above circumstances, and its purpose is to provide an endoscope light source device in which the air supply connection rubber can be easily replaced without disassembling the entire socket. be.

That is, the present invention is composed of a first air pipe fixed to the socket body and a second air pipe formed integrally with an air connection comb, and the second air pipe is connected to the first air pipe. The second air supply pipe is made detachable so that only the second air pipe can be removed.

The present invention will be described below based on embodiments shown in the drawings. Figures 1 to 4 show the first embodiment,
In FIG. 1, 1 is an endoscope, and 2 is a main body of the light source device. The endoscope 1 is constructed by connecting an insertion section 5 and a light guide cable 6 to an operation section 4 having an eyepiece section 3. and,
A connector is provided at the tip of the light guide cable 6, and a light guide tube 8, an air supply port body 9, and a plurality of terminal pins IO are protruded from the tip of the connector. Further, the connector 7 is removably connected to the front panel 1 of the light source device main body 2.
2, an operation switch 13 and a display section 14-v are provided. The socket 12 is provided with a light guide tube insertion hole 15, an air supply eye insertion hole 16, and a terminal pin insertion hole 17.

To further explain the socket 12, it is constructed as shown in FIG. That is, 18 is the previous UII
19 is the inner plate of the outer plate forming the i/equilateral 1-no. The outer plate 18 and the inner plate 19 are provided apart from each other, and a gap 11a is formed between them. The outer plate 18 and the inner plate 19 have mounting holes 18 facing each other.
a, 19g is drilled. The mounting cylinder 2I is inserted into the mounting hole 19aK of the inner plate 19 via the mounting ring 20. The mounting ring 20 and the mounting tube 2 have seven run portions 20a, respectively.

21a are provided, and these seven runno parts 20&.

21a is fixed to the inner plate 19 with fixing screws 22. The distal end of the mounting tube 21 penetrates the gap 11a and protrudes to the mounting hole 18a of the outer plate 18, and a set screw 23 is formed on the inner peripheral surface of the distal end. Furthermore, a socket main body 24 is inserted into the interior of the mounting tube 2. The socket body 24 is provided with an insertion hole 25 forming the light guide tube insertion hole 15, an air supply tube attachment hole 26, and a connection terminal (not shown), and a groove 27 is provided in a part of the outer peripheral wall. It is being The mounting tube 2 facing this groove 27
A fixing screw 28 is screwed into the socket from the outside, and the tip of the fixing screw 28 projects into the groove 22 to prevent the socket body 24 from rotating relative to the mounting tube 2. Specifically, the air supply pipe attachment hole 26 passes through the socket body 24 in the axial direction, and has a stepped portion 2 at its tip.
A large diameter section 30 forming a diameter 9 is provided.

On the other hand, a fixing ring 32 having three external threads to be screwed into the internal screws 23 is provided at the tip of the mounting tube 2, that is, in the mounting hole 18a of the inverted plate 18. A guide body 33 is inserted opposite the socket main body 24 through a gap 33a. A large diameter portion 34 is provided at the distal end of the guide body 33 and joins with the inner circumferential surface of the mounting tube 21, and a groove 35 is formed in a part of the outer circumference of the large diameter portion 34. The mounting tube 2 facing this groove 35
A fixing screw 36 is screwed into the mounting tube 1 from the outside, and the tip of the fixing screw 36 projects into the groove 35 to prevent the guide body 33 from rotating with respect to the mounting tube 2. Furthermore, a flange 37 is integrally provided on the fixed ring 32 that fits into the guide body 33, and a male thread 38 is cut in the front part of the flank 37. A tightening ring 39 that presses against the outer plate 18 and fixes the guide body 33 is screwed onto the male thread 38. Further, the guide body 33 has a guide hole 40 facing the insertion hole 25 of the socket body 24.
, a guide hole 4 facing the air supply pipe attachment hole 26 and a guide hole (not shown) facing the connecting terminal (not shown).
is drilled.

Further, a first air pipe 42 is inserted and fixed into the air pipe attachment hole 26 of the socket body 24. This first air supply pipe 42 is provided with a connecting part 43 consisting of a large diameter part at its tip, which is engaged with the large diameter part 30 of the air supply pipe attachment hole 26, and the end part is connected to the main body 24 of the first air supply pipe 42. It protrudes from the rear end surface. A connecting pipe 44 protruding perpendicularly thereto is connected to the distal end of the first air supply pipe 42, and is connected to an air supply source (not shown) within the light source device main body 2. Further, a female threaded portion 45 is formed in the connection portion 43 of the first air supply pipe 42, so that a second air supply pipe 46 can be detachably connected thereto. That is, the second air supply pipe 46 is inserted into the guide hole 41 of the guide body 33, consisting of a metal tube 47 and an air supply connection rubber 48 integrally molded therewith. A male threaded portion 50 is provided at the base of the metal tube 47 of the second air supply pipe 46 via a collar portion 49, and this male threaded portion 50 is threaded into the female threaded portion 45 of the first air supply pipe 42. It is worn. Furthermore, the flange portion 49 has a gap between the socket body 24 and the guide body 33; 3a, the rear end surface is in close contact with the first air pipe 42 via an O-ring 5, and a plurality of engagement recesses 52, 52 are provided on this front end surface.

The socket 12 configured as described above connects the endoscope 1 and the light source device main body 2 optically and electrically by connecting with the connector 7, and the air supply port body 9 provided in the connector 7 The air supply connecting comb 48 of the second air supply pipe 46 is press-fitted to form an air supply system path. Therefore, if the connector 7 is frequently inserted and removed from the socket 12, the air supply connection rubber 48 will be worn out by the air supply port body 9, and the airtightness between the two will be impaired, making it necessary to replace the air supply connection rubber 48 with a new one. occurs. However, according to the present invention, the air supply connection rubber 48 can be easily replaced.

Next, the operation when replacing the air supply connecting rubber 48 will be explained. First, when the tightening ring 39 is loosened and the fixed ring 32 is loosened, the fixed ring 32 is removed from the mounting tube 2, and the guide body 33 can be pulled out from the mounting tube 2.

Therefore, as shown in FIG. 3, only the second air pipe 46 protrudes from the front part of the socket main body 24. Therefore, as shown in FIG. The air line 46 can be removed from the first air line 42 . That is, this special tool 53 is
The cylindrical body 54, which can be fitted into the air supply pipe 46, has a plurality of retaining convex portions 55, 55 at the distal end thereof, and a knob portion 56 at the distal end. Then, the cylindrical body 54 of this special tool 53 is inserted into the second air pipe 46, and the engaging protrusion 5
5.55 while engaged with the retaining portion 52.52, the male threaded portion 50 of the second air pipe 46 is connected to the first
can be extracted from the female threaded portion 45 of the air supply pipe 42. Therefore, the second air supply pipe 46 can be removed from the first air supply pipe 42 and replaced with the second air supply pipe 46 having a new air supply connection rubber 48.

FIG. 5 shows a second embodiment of the present invention, in which the connection structure between the first air pipe 42 and the second air pipe 46 is different.

That is, a fitting hole 57 is provided in the connecting portion 43 of the first air supply pipe 42 in its axial direction, and an annular groove 60 for accommodating the female threaded portion 58 and the O-ring 59 is provided on the inner peripheral surface of the fitting hole 57. establish.

On the other hand, a shaft portion 6 is provided at the end of the second air supply pipe 46 to be inserted into the fitting hole 57, and a male thread portion 62 to be screwed into the female thread portion 58 is provided on the shaft portion 6. It is engraved.

In FIG. 5, the same components as those in the first embodiment are designated by the same numbers, and the explanation thereof will be omitted.

In each of the above embodiments, the first and second air pipes 4
2.46 is connected by screwing, but the connection is not limited to this, and a bayonet type connection may also be used.

As explained above, this invention is composed of a first air pipe fixed to a socket body and a second air pipe integrally molded with air connection rubber, and the second air pipe is connected to the first air pipe. Since it is removable from the trachea, if the air supply connecting rubber becomes worn out, only the second air supply pipe can be removed, making it easy to replace the socket without disassembling the entire socket like in the past. It has the effect that it can be done. ″

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a perspective view of an endoscope light source device, FIG. 2 is a longitudinal sectional side view of a socket, and FIG. FIG. 4 is a perspective view of a special tool, and FIG. 5 is a vertical sectional side view showing a part of a socket showing a second embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Endoscope, 7... Connector, 12... Socket, 24... Socket body, 42... First air pipe, 46... Second air pipe, 48...・Air supply connection rubber.

Claims (1)

[Scope of Claims] (1) In an endoscope light source device equipped with a socket to which an endoscope connector is connected, a first air pipe is fixed to the socket body, and a first air pipe is supplied to the first air pipe. An endoscope light source device characterized in that a second air supply pipe integrally molded with air connection rubber is detachably connected. (2) The first air supply pipe and the second air supply pipe are connected by screwing. An endoscope light source device according to claim 1, characterized in that: