JPH0624805Y2 - Light source device adapter - Google Patents

Description

The present invention relates to a light source device adapter, and more particularly to a light source device adapter to which a light guide connector of an endoscope is connected.

[Conventional technology]

The endoscope is provided with an optical fiber bundle for illumination (ride guide) for guiding illumination light to the tip of the endoscope, and a light guide connector (hereinafter LG) is provided at an incident end portion of the light guide.
A connector) is provided so that it can be connected to the light source device.

By the way, the endoscope has undergone a model change for several years, and the shape and mechanism of the LG connector may be different between the old type and the new type.

However, since the light source device used by the user cannot be completely replaced with a new type, in general, the connection part with the LG connector of the light source device is made into an adapter type so that the light source device can be attached to and detached from the light source device. It has a structure.

[Problems to be solved by the device]

However, it is troublesome to replace the adapter each time according to the LG connector of the endoscope. Therefore, it is desired to have an adapter that can be connected to two or more types of LG connectors of different types with one type of adapter.

In addition, it is desirable that two or more kinds of retaining mechanisms be configured between the LG connector and the adapter so that they cannot be easily removed by a pulling force or the like when the endoscope is used. It is desirable that at least one kind of the retaining mechanism has all of its movable parts on the adapter side and at least one of the two kinds of LG connectors does not need to have a mechanism that moves to the LG connector. The reason is that the structure of the LG connector is simplified, the cost is reduced, and the reliability is improved at the same time.

The present invention has been made in view of such circumstances, and it is possible to connect two or more types of LG connectors and to configure two or more types of retaining mechanisms with the LG connector, and At least one of the retaining mechanisms
The kind aims to provide an adapter for a light source device in which all of its movable parts are provided on the adapter side.

[Means for solving the problem]

In order to achieve the above object, the present invention is an adapter of a light source device to which a light guide connector of an endoscope is connected, wherein a fixed barrel fixed to the light source device has predetermined inner and outer peripheral surfaces, respectively. An inner cylinder and an outer cylinder are provided slidably within the range, and spring-biased in the direction away from the light source device respectively, and stopper balls that can be retracted and retracted are provided in the fixed cylinder, and the stopper balls are the outer peripheral surface of the inner cylinder. The outer cylinder is stopped against the spring biasing force at the time of protrusion due to contact with the inner cylinder, and the inner cylinder is pushed in along with the insertion of a predetermined light guide connector of the endoscope and provided on the light guide connector. When the recess reaches the position facing the stopper ball, the recess is recessed, and the outer cylinder slides by the spring biasing force as the stopper ball retracts, and the inner peripheral surface of the recess moves to the stopper ball. In the abutting light source device adapter, the inner cylinder is provided with an engaging portion capable of engaging with a movable member of a retaining mechanism provided in a light guide connector different from the predetermined light guide connector. .

[Action]

According to the present invention, the inner cylinder and the outer peripheral surface of the fixed cylinder are slidably provided on the inner cylinder, the outer cylinder and the stopper ball that is retractable on the inner peripheral surface and the outer peripheral surface of the fixed cylinder, respectively. Since the movable portion of the stop mechanism is configured, the retaining mechanism can be configured between the light guide and the adapter only by providing the predetermined light guide connector of the endoscope with the recess into which the stopper ball is fitted. . Further, since the inner cylinder is provided with the engaging portion that can be engaged with the movable member of the retaining mechanism provided in the light guide connector different from the light guide connector, the connecting portion between the light guide connector and the adapter is provided. It is possible to connect with two or more types of light guide connectors without increasing the size.

〔Example〕

Hereinafter, preferred embodiments of an adapter of a light source device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view including a partial cross section showing an embodiment of an adapter of a light source device according to the present invention, showing a state in which an LG connector of an endoscope is not attached.

In the figure, the adapter 10 can be attached to the socket 12 </ b> A of the light source device 12 with a screw 14. The adapter 10 is mainly composed of a first fixed barrel 20, a second fixed barrel 22, an inner barrel 24, an outer barrel 26, a stopper ball 28, compression springs 30, 32 and the like.

The first fixed barrel 20 and the second fixed barrel 22 are fixed to the socket 12A of the light source device 12 with the screws 14 as described above. The light source device 12 of the inner cylinder 24 is attached to the first fixed cylinder 20.
A step portion 20A that restricts the movement in a direction away from (arrow A direction) and a hole 20B that accommodates the stopper ball 28 are formed. The hole diameter of the hole 20B on the inner peripheral surface side of the first fixed cylinder 20 is smaller than the diameter of the stopper ball 28 so that the stopper ball 28 does not drop. On the other hand, the second fixed cylinder 22 has a click groove 22 including a first tapered surface 22A and a second tapered surface 22B.
C is formed. The click groove 22C and the like are for engaging with a click spring 42 of the LG connector 40 described later.

The inner cylinder 24 includes the inner peripheral surface of the first fixed cylinder 20 and the second fixed cylinder 22.
It is arranged so as to be slidable in the direction of arrow AB between the outer peripheral surface and the outer peripheral surface. The inner cylinder 24 includes a step portion 20A of the first fixed cylinder 20.
An engaging portion 24A that comes into contact with the LG connector 60, which will be described later.
And an engaging portion 24B that engages with the movable member (lever).

The outer cylinder 26 is indicated by an arrow AB along the outer peripheral surface of the first fixed cylinder 20.
It is arranged so that it can slide in any direction. A groove portion 26B including a tapered surface 26A is formed on the outer cylinder 26.
A long hole 34 is formed in the first fixed cylinder 20 as shown by a broken line, and a screw 36 that engages with the long hole 34 is formed in the outer cylinder 26.
Are provided, and the movement range of the outer cylinder 26 is regulated by these.

The stopper ball 28 is the hole 20B of the first fixed cylinder 20.
It is housed inside and can be retracted from the first fixed barrel 20 in association with the movement of the inner barrel 24 and the outer barrel 26.

The compression spring 30 is arranged between the second fixed cylinder and the inner cylinder 24, and biases the inner cylinder 24 in the direction of arrow A. Similarly, the compression spring 32 divides the first fixed cylinder 20 and the outer cylinder 26. Placed between
The outer cylinder 26 is spring-biased in the direction of arrow A.

Next, a connection operation between the adapter 10 having the above configuration and three different types of LG connectors of the endoscope will be described.

FIG. 2 shows the adapter 10 having the above structure and the LG connector 40.
It is a figure which shows the connection state with. This LG connector 40
A click spring 42 is attached to the tip of the insertion portion 40A inserted into the adapter 10. Also, the LG connector 4
The outer diameter of the insertion portion 40 </ b> A of 0 is smaller than the inner diameter of the second fixed cylinder 22.

When this LG connector 40 is inserted into the adapter 10,
The click spring 42 is the tapered surface 22A of the second fixed cylinder 22.
As it moves upward, it contracts so as to have a smaller diameter, and when it goes over the tapered surface 22A, it falls into the click groove 22C. As a result, the LG connector 40 and the adapter 10 are connected.

When the connection holding between the LG connector 40 and the adapter 10 is performed by clicking stop as described above, the connection may be disconnected if a pulling force or the like is applied when the endoscope is used.

FIG. 3 is a diagram showing a connection state between the adapter 10 having the above configuration and the LG connector 50 of another type. The LG connector 50 has an insertion portion 50A having an outer diameter slightly smaller than the inner diameter of the first fixed barrel 20 of the adapter 10, and a concave groove 52 is formed on the outer periphery of the insertion portion 50.

This LG connector 50 is the adapter 1 in the state shown in FIG.
When inserted into 0, first, the insertion portion 50A of the LG connector 50
The tip end step portion 50B of the above contacts the inner cylinder 24. When the LG connector 50 is further inserted from this state, the inner cylinder 24 is pushed against the biasing force of the compression spring 30. Then, when the recessed groove 52 of the insertion portion 50 reaches a position facing the stopper ball 28, the stopper ball 28 can be retracted into the recessed groove 52.

In the state shown in FIG. 1, the stopper ball 28 projects from the outer peripheral surface of the inner cylinder 24 and locks the outer cylinder 26 so that the outer cylinder 26 does not move in the arrow A direction. When the stopper ball 28 can be retracted into the groove 52, the stopper ball 28 is pushed down by the spring-biased tapered surface 26A of the outer cylinder 26 and fits into the groove 52. At this time, the outer cylinder 26
Is disengaged by the stopper ball 28 and is moved by a predetermined amount in the direction of arrow A (until the screw 36 reaches the end of the elongated hole 34 in the direction of arrow A), and the inner peripheral surface thereof moves the stopper ball 28 up and down. regulate. This prevents the stopper ball and the groove 52 from being disengaged from each other, that is, the LG
The connector 50 does not come off the adapter 10.

On the other hand, when the LG connector 50 is detached from the adapter 10, the outer cylinder 26 is slid toward the light source device 12 side against the biasing force of the compression spring 32 so that the groove portion 26B of the outer cylinder 26 is located above the stopper ball 28. To This allows the stopper ball 28 to move up and down freely, so that the LG connector 50 can be blown out from the adapter 10.
When the LG connector 50 is removed from the adapter 10 in this way, the inner cylinder 24 returns to the position shown in FIG. 1 by the compression spring 30 and contacts the stopper ball 28. As a result, the stopper ball 28 projects onto the outer peripheral surface of the first fixed cylinder 28 and functions as a stopper for the outer cylinder 26.

The LG connector 50 and the adapter 10 are arranged as described above.
When and are connected, the connection mechanism does not disconnect even if a pulling force or the like is applied during use of the endoscope due to the retaining mechanism between the two. In addition, all the movable parts of the retaining mechanism are provided on the adapter 10 side, and the LG connector 50 has the concave groove 5
Since only two need be provided, the structure of the LG connector 50 is simplified, the cost of the endoscope can be reduced, and the reliability is improved.

FIG. 4 shows the adapter 10 having the above-mentioned configuration and another type of L.
It is a figure which shows the connection state with the G connector 60. This LG
The connector 60 is provided with a movable part of the retaining mechanism.

This movable part is composed of a lever 62 and a torsion spring 64. The lever 62 is rotatably arranged around a fulcrum 66, and its tip is engaged with the engaging portion 24B of the inner cylinder 24 of the adapter 10. A matching convex portion 62A is provided.
The torsion spring 64 biases the lever 62 in the counterclockwise direction in FIG. 4 about the fulcrum 66.

Therefore, when the LG connector 60 is inserted into the adapter 10 in a state where the lever 62 of the LG connector 60 is pressed down against the spring biasing force, and then the pressing of the lever 62 is released, as shown in FIG. The convex portion 62A and the engaging portion 24B of the inner cylinder 24 are engaged with each other. As a result, the LG connector 60 can be connected so as not to come off from the adapter 10.

On the other hand, when disconnecting the LG connector 60 from the adapter 10, the lever 62 is pushed down to release the engagement between the convex portion 62A of the lever 62 and the engaging portion 24B of the inner cylinder 24, and then the LG
The connector 50 may be pulled out from the adapter 10. That is, this LG connector 60 is the LG connector 50 of FIG.
It can be easily removed with one hand.

If the tip end surface of the convex portion 62A of the lever 62 is formed in a tapered shape and the biasing force of the torsion spring 64 is made sufficiently smaller than the biasing force of the compression spring 30 that biases the inner cylinder 24, It is also possible to mount it on the adapter 10 without pushing down the lever 62. Further, since the engaging portion that engages with the convex portion 62A of the lever 62 is provided on the inner cylinder 24, it is possible to minimize the length of the lever 62 without increasing the length of the adapter 10.

[Advantages of the Invention] As described above, according to the adapter of the light source device of the present invention, two or more types of LG connectors can be connected, and two or more types of retaining mechanisms are provided between the adapter and the LG connector. Can be configured. Moreover, since at least one of the two or more types of retaining mechanisms is provided with all of its movable parts on the adapter side, the structure of the LG connector can be simplified, and as a result, the cost of the endoscope is reduced. It is possible to lower the reliability and improve the reliability. Furthermore, since the adapter-side engaging portion of the other retaining mechanism is provided on the inner cylinder of the adapter, there is an advantage that the movable portion of the retaining mechanism on the adapter or LG connector side does not need to be large.

[Brief description of drawings]

FIG. 1 is a side view including a partial cross section showing an embodiment of an adapter of a light source device according to the present invention, and FIGS. 2 to 4 are connection states of the adapter of FIG. 1 and three types of LG connectors, respectively. FIG. 10 ... Adapter, 12 ... Light source device, 20 ... First fixed barrel, 24 ... Inner barrel, 24B ... Engaging portion, 26 ... Outer barrel, 28 ... Stopper ball, 30, 32
...... Compression spring, 40, 50, 60 ・ ・ ・ LG connector, 5
2 ... concave groove, 62 ... lever.

Claims (1)

[Scope of utility model registration request] 1. An adapter for a light source device to which a light guide connector of an endoscope is connected, which is slidable within a predetermined range on an inner peripheral surface and an outer peripheral surface of a fixed cylinder fixed to the light source device. An inner cylinder and an outer cylinder are provided, and spring-biased in a direction away from the light source device respectively, and a stopper ball that can be retracted and retracted is provided in the fixed cylinder, and the stopper ball is projected when the outer peripheral surface of the inner cylinder abuts. The outer cylinder is stopped against its spring biasing force, the inner cylinder is pushed in along with the insertion of a predetermined light guide connector of the endoscope, and the recess provided in the light guide connector faces the stopper ball. When it reaches the position where
In the adapter of the light source device, wherein the outer cylinder slides by the spring biasing force as the stopper ball is retracted and the inner peripheral surface of the outer cylinder contacts the stopper ball, a stopper provided on a light guide connector different from the predetermined light guide connector is provided. An adapter for a light source device, characterized in that an engaging portion engageable with a movable member of a mechanism is provided in the inner cylinder.