JP2011170094A - Endoscope adapter, and endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adapter for an endoscope, capable of more reliably achieving electrical connection to the endoscope. <P>SOLUTION: The adapter 1 for the endoscope includes an electronic component and an electrical connection 40 for electrically connecting the electronic component and an insert part 101 of the endoscope to each other, and the adapter can be removed from the insert part. The electrical connection includes: a first contact part 42 having an insulating cylindrical part 41, a first contact 45 connected to the insert part, a first elastic member for biasing the first contact to the insert part side at a first end part, and a first wall part supporting a second end part of the first elastic member, and inserted in the cylindrical part and secured to the inner wall of the cylindrical part; and a second contact part 43 having a second contact 50 connected to an electronic component, a second elastic member for biasing the second contact to the electronic component side at the first end part, and a second wall part supporting a second end part of the second elastic member, and housed in the cylindrical part. When the adapter for the endoscope is mounted to the insert part, the electronic component and the insert part are electrically connected to the first contact part and the second contact part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an endoscope adapter, and more particularly to an endoscope adapter having an electrical connection portion and an endoscope having the electrical connection portion.

Conventionally, an endoscope having a long insertion portion is used to inspect the inside of a test object. An observation optical system is provided at the distal end of the insertion portion, but an adapter may be attached to the distal end of the insertion portion in order to obtain a field of view that is more suitable for the object to be tested as necessary. .
Some endoscope adapters include LEDs and the like, and include an illumination unit that illuminates the field of view of the endoscope. In many cases, an adapter for an endoscope including an illuminating unit includes an electrical contact that is electrically connected to a predetermined part of the endoscope in order to supply electric power of the illuminating unit from an endoscope body or the like.

Patent Document 1 describes an endoscope adapter including a pin-shaped electrical connection member as the above-described electrical contact.
This electrical connection member is configured by arranging a coil spring between a pair of pin members disposed at both ends of a cylindrical case body. Each contact member is slidable in the longitudinal direction of the electrical connection member by compressing the coil spring, and is applied to an object to be electrically connected, such as an LED circuit board, by the biasing force of the coil spring. Maintain contact status. As a result, the electrical connection between the endoscope adapter and the endoscope is maintained.

JP 2008-36033 A

  However, since the electrical connection member described in Patent Document 1 receives the amount of force with which the pin members at both ends are pressed from the object by a common coil spring, even if the amount of pressing force acting on each pin member is different, The biasing forces that are averaged by the coil springs and act on the pin members at both ends are substantially the same.

Therefore, the pin member that has received a relatively small amount of pressing force comes into contact with the object with an urging force that exceeds the amount of pressing force. As a result, the pin member comes into contact with the object with an amount of force larger than necessary. For example, when the object is a structure with low rigidity such as a flexible substrate, the object is destroyed or deformed. May cause poor contact.
On the other hand, the opposite situation may occur. That is, by averaging the pressing force amount, the pin member that has received a relatively large pressing force amount is brought into contact with the object with an urging force that is less than the pressing force amount. As a result, the biasing force may be insufficient, resulting in poor contact.
All of the above-described situations are problematic in that the electrical connection between the endoscope adapter and the endoscope is uncertain, and a structure that can ensure the electrical connection is required.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an endoscope adapter that can be more reliably electrically connected to an endoscope when it is attached.
Another object of the present invention is to provide an endoscope that can be more reliably electrically connected to an endoscope adapter.

  A first aspect of the present invention is an endoscope having an electronic component and an electrical connection portion that electrically connects the electronic component and an insertion portion of the endoscope, and is detachable from the insertion portion. It is an adapter, and the electrical connection portion urges the first contact toward the insertion portion at the first end portion and an insulating cylindrical portion, a first contact connected to the insertion portion. A first contact portion having a first elastic member and a first wall portion supporting a second end portion of the first elastic member, inserted into the tube portion, and fixed to an inner wall of the tube portion; A second contact connected to the electronic component, a second elastic member for urging the second contact toward the electronic component at the first end, and a second end of the second elastic member. And a second contact portion inserted into the tube portion and having a second wall portion to be supported, and when attached to the insertion portion, the first contact portion and the second contact portion are interposed in front. An electronic component to the insertion portion is characterized in that it is electrically connected.

  The first contact portion has a main body that accommodates the first elastic member and a part of the first contact inside, and the first wall portion does not communicate between the inside and the outside of the main body. The first contact portion may be fixed to the inner wall of the cylindrical portion over the entire circumferential direction.

  The electrical connection portion may be arranged so that the second contact and the electronic component are connected in a state where the second elastic member is compressed.

  At least one of the end portion of the first contact portion and the end portion of the second contact portion adjacent to each other in the cylindrical portion may be formed in a tapered shape that decreases in diameter as approaching the other.

  The main body has one end that has a tapered diameter and has an opening at the tip, and the first contact point protrudes from the opening and is inserted into the insertion portion. You may have the front-end | tip part connected, and the taper part which has the same taper angle as one end part of the said main body between the said front-end | tip part and the said base end part.

  According to a second aspect of the present invention, there is provided an insertion portion having an observation optical system at a distal end, an electrical connection portion provided in the insertion portion and electrically connected to the endoscope adapter, and the endoscope adapter. An endoscope provided with a main body for supplying electric power, wherein the electrical connection portion includes an insulating tube portion, a first contact connected to the endoscope adapter, and a first end. A first elastic member that urges the first contact toward the endoscope adapter side at a portion, and a first wall portion that supports a second end portion of the first elastic member. A first contact portion inserted into the inner wall of the cylindrical portion, a second contact electrically connected to the body portion, and the second contact at the first end portion toward the body portion side. A second contact member that is encased in the cylindrical portion and includes a second elastic member that urges and a second wall portion that supports a second end of the second elastic member. It is characterized in.

According to the endoscope adapter of the present invention, the electrical connection with the endoscope can be more reliably performed when the endoscope adapter is attached.
In addition, according to the endoscope of the present invention, electrical connection with the endoscope adapter can be more reliably performed.

It is a figure which shows the endoscope for which the adapter for endoscopes and the adapter for endoscopes of 1st Embodiment of this invention are mounted | worn. It is sectional drawing of the adapter for endoscopes. It is an expanded sectional view showing the state where the same adapter for endoscopes was attached to the endoscope. (A) is the elements on larger scale of FIG. 2, (b) is the elements on larger scale of FIG. It is sectional drawing which shows the inside of the 1st contact part in the electrical connection part of the adapter for the endoscope. It is sectional drawing which shows the inside of the 2nd contact part of the same electrical connection part. It is sectional drawing which shows the structure of the electrical connection part in the modification of the embodiment. It is sectional drawing which shows the structure of the electrical connection part in the adapter for endoscopes of 1st Embodiment of this invention. (A) And (b) is sectional drawing which shows the structure of the 1st contact part in the modification of this invention. It is a figure which shows the endoscope and adapter for endoscopes in the modification of this invention.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view illustrating a configuration of an endoscope adapter (hereinafter simply referred to as “adapter”) 1 and an endoscope 100 to which the adapter 1 is attached according to the present embodiment.

  The endoscope 100 has a known configuration and is acquired by the insertion unit 101 having a long insertion unit 101 having an observation optical system at the tip, an operation unit 102 having a joystick 103 for operating the insertion unit 101, and the insertion unit 101. A display unit 105 for displaying an image inside the test object, an operation panel 106 for performing various operations, and the like, and a main body unit 104 connected to the insertion unit 101 are provided. The main body unit 104 is connected to a battery or an AC power source (not shown) and serves as a power supply source to the adapter 1.

FIG. 2 is an enlarged cross-sectional view of the adapter 1, and FIG. 3 is an enlarged cross-sectional view showing a state where the adapter 1 is attached to the insertion portion 101 of the endoscope 100.
The adapter 1 is a so-called side viewing adapter, and as shown in FIG. 2, a cover 10 for attaching to and detaching from the insertion portion 101, an adapter optical system 20 for adjusting the field of view of the endoscope 100, and a field of view. The illumination unit 30 includes an electrical connection unit 40 that electrically connects the adapter 1 and the insertion unit 101.

  The cover 10 is formed in a cylindrical shape, and a screw portion 11 is formed on a part of the inner wall. When the adapter 1 is attached, the screw portion 11 is detachably engaged with screw portions 107A and 107B provided on the outer peripheral surface of the insertion portion 101 as shown in FIG.

The adapter optical system 20 includes a lens system 21 and a side view prism 22. The lens system 21 and the side view prism 22 are attached to a metal base 23, and an end 23 </ b> A of the base 23 enters the inside of the cover 10. The end 10 </ b> A of the cover 10 on the side where the base 23 has entered has a reduced inner diameter, and the base 23 is connected so as not to be detached from the cover 10. An O-ring 24 is attached to the end 23 </ b> A of the base body 23 to suppress liquid from entering the adapter 1 during mounting.
In the following description, the side on which the cover 10 is provided is referred to as “base end side” of the adapter 1, and the side opposite to the base end side is referred to as “tip end side”.

  The illumination unit 30 includes an LED unit (electronic component) 31 that illuminates the field of view of the endoscope 100 and a flexible substrate 32 that is electrically connected to the LED unit 31. The LED unit 31 has one or more light emitting diodes (LEDs), and is disposed on the tip side of the adapter optical system 20.

The distal end side of the flexible substrate 32 is electrically connected and fixed to the LED unit 31 with solder, conductive adhesive or the like. The base end side of the flexible substrate 32 is fixed with the conductive pattern facing the base end side, and a part of the conductive pattern serves as a feeding point 32 </ b> A in contact with the electrical connection portion 40.
The flexible substrate 32 functions as a power supply route to the LED unit 31 and also functions as a control substrate that controls the light emission mode of the LED unit 31.

As shown in FIG. 2, the electrical connection portion 40 is provided in the through hole 25 formed in the base body 23 and extending from the distal end side toward the proximal end side.
4 (a) and 4 (b) are partial enlarged views of FIGS. 2 and 3, respectively. In order to make the structure of the electrical connection part 40 easier to see, one of the electrical connection part 40 and the base body 23 is shown. The section is shown by a cross section passing through the axis of the electrical connection section 40.
As shown in FIG. 4A, the electrical connection part 40 includes an insulating cylinder part 41, and a first contact part 42 and a second contact part 43 arranged in the cylinder part 41.

  The cylinder portion 41 is formed in a cylindrical shape and is inserted through the through hole 25. The cylinder part 41 is fixed to the inner wall of the through-hole 25 by bonding or the like over the circumferential direction. The material of the cylinder part 41 is not particularly limited as long as it is insulative, and may be selected in consideration of various characteristics such as chemical resistance and heat resistance according to the use environment of the adapter 1 and the endoscope 100. The cylinder part 41 prevents a short circuit between the electrical connection part and the base 23 or the like.

  FIG. 5 is a cross-sectional view showing the inside of the first contact portion 42. The first contact portion 42 includes a substantially cylindrical main body 44, a first contact 45 attached to one end of the main body 44, and a coil spring (first elastic member) 46 accommodated in a space in the main body 44. It has.

The main body 44 is formed of a conductor such as metal, and has a space S1 therein and is formed in a substantially cylindrical shape. One end 44A in the axial direction of the main body 44 has an opening 47 communicating with the space S1. The end portion 44 </ b> A is formed in a tapered shape that gradually decreases in diameter, and the outer diameter and inner diameter of the opening 47 are smaller than the outer diameter and inner diameter of the intermediate portion of the main body 44.
The end 44B opposite to the end 44A is formed in a tapered shape like the end 44A, but is not provided with an opening. That is, the space S <b> 1 is blocked by the end 44 </ b> A so as not to communicate with the outside of the main body 44, and does not penetrate in the axial direction of the main body 44.

  The first contact 45 is made of a conductor. A base end portion 45 </ b> A of the first contact 45 is accommodated inside the main body 44, and a distal end portion 45 </ b> B connected to the insertion portion 101 of the endoscope 100 protrudes outside the main body 44. Since the outer diameter of the base end portion 45 is larger than the inner diameter of the opening 47, the first contact 45 does not fall off from the main body 44.

  The coil spring 46 is disposed in the space S <b> 1 so that the axis of the loop formed by the coil spring 46 is parallel to the axis of the main body 44. The first end 46A of the coil spring 46 is in contact with the base end 45A of the first contact 45, and the second end 46B is a wall surface (first wall) 48 on the space S1 side of the end 44B. Is supported in contact with. When the dimension in the axial direction of the coil spring 46 in a natural state where no external force is applied is set to be longer than the dimension in the axial direction of the space S1, the coil spring 46 is accommodated in the space S1 in a compressed state, and the first contact as will be described later. It is preferable because 45 is easily biased.

  As shown in FIG. 4A, the first contact portion 42 has a cylindrical portion 41 such that the distal end portion 45B of the first contact 45 is located outside the cylindrical portion 41 and exposed to the proximal end side of the adapter 1. Has been inserted inside. Further, at least a part of the outer peripheral surface of the main body 44 is fixed to the inner wall of the cylindrical portion 44 over the entire periphery by the adhesive layer 53. In other words, the liquid cannot pass between the first contact portion 42 and the cylindrical portion 41, and water tightness is ensured.

  FIG. 6 is a cross-sectional view showing the inside of the second contact portion 43. The second contact portion 43 has substantially the same structure as the first contact portion 42, and includes a main body 49, a second contact 50, and a coil spring (second elastic member) 51.

  The main body 49 differs from the main body 44 only in that the end portion 49 </ b> B where the opening 47 is not provided is formed flat and only in the dimension in the axial direction. The second contact 50 has a base end portion 50A and is substantially the same shape as the first contact 45 except that the shape of the tip end portion 50B is different. The coil spring 51 is disposed in the space S2 of the main body 49, like the coil spring 46 of the first contact portion 42, and the first end portion 51A contacts the base end portion 50A of the second contact 50, and the second end The part 51 </ b> B is supported in contact with the wall surface (second wall part) 52.

  As shown in FIG. 4A, the second contact portion 43 is such that the distal end portion 50B of the second contact 50 is located outside the cylindrical portion 41 and protrudes toward the flexible substrate 32 of the illumination portion 30. In addition, it is inserted into the cylinder part 41. The outer peripheral surface of the main body 49 is not bonded to the inner wall of the cylindrical portion 41, and the second contact portion 43 can move in the axial direction of the lumen of the cylindrical portion 41.

  The spring constants of the coil springs 46 and 51 are appropriately set based on the rigidity of the structure with which the first contact 45 and the second contact 50 are in contact. In the present embodiment, since the second contact 50 is in contact with the flexible substrate 32 having low rigidity, the coil spring 51 having a smaller spring constant than the coil spring 46 is selected.

  The electrical connection portion 40 configured as described above has the second contact 50 in contact with the contact 32A of the flexible substrate 32 in a state where the coil spring 51 is slightly compressed in the axial direction, and the first contact portion. The end portion 44B of 42 and the end portion 49B of the second contact portion 43 are attached to the through hole 25 of the base 23 so as to come into contact with each other.

An operation when the adapter 1 configured as described above is used will be described.
When the adapter 1 is attached to the endoscope 100, the user causes the distal end of the insertion portion 101 to enter the cover 10 from the proximal end side of the adapter 1.

  When the user turns the cover 10 in a predetermined direction around the axis, first, the screw portion 11 of the cover 10 and the screw portion 107A (see FIGS. 3 and 4B) of the insertion portion 101 are engaged. When the screw portion 107A gets over the screw portion 11 and the engagement between the two is released, the user can connect the connection portion 108 provided in the insertion portion 101 and connected to the power supply source of the main body portion 104, and the adapter 1 The tip of the insertion portion 101 is pressed against the base body 23 by aligning the position with the one contact 45. Then, as shown in FIG. 4B, the first contact 45 enters the connection portion 108, and the observation optical system 109 disposed in the insertion portion 101 and the lens system 21 of the adapter optical system 20 are the same. Is positioned on the optical axis.

  When the user rotates the cover 10 in this state, the screw portion 11 is engaged with the screw portion 107B as shown in FIG. When the user further rotates and tightens the cover 10, the insertion portion 101 advances toward the adapter 1. As a result, the O-ring 24 is crushed and the space between the insertion portion 101 and the rear end of the base body 23 is kept watertight, and the connection portion 108 opposes the first contact point 45 against the biasing force of the coil spring 46 and the adapter. 1 is moved to the tip side.

  When the user stops the tightening operation of the cover 10 at an appropriate position, the mounting of the adapter 1 is completed. After the mounting, electric power can be supplied from the main body 104 to the feeding point 32A via the connecting portion 108, the first contact portion 42, and the second contact portion 43. 100 fields of view can be suitably illuminated. Further, the image inside the test object acquired through the adapter optical system 20 is suitably formed on the imaging unit 110 provided in the insertion unit 101.

In a state where the adapter 1 of the present embodiment is mounted on the insertion portion 101, the electrical connection portion 40 is in the following state.
In the first contact portion 42, since the first contact 45 is pushed back to the distal end side of the adapter 1 by the connecting portion 108 as described above, the first contact 45 is connected by the first end portion 46A of the coil spring 46. The connector 108 is in contact with the connecting portion 108 while being biased toward the portion 108. For this reason, the tolerance of the distance between the first contact point 45 and the connecting portion 108 is satisfactorily absorbed, and electrical connection between the two is suitably ensured.
Similarly, also in the second contact portion 43, the second contact 50 comes into contact with the feeding point 32 </ b> A while being biased toward the flexible substrate 32 of the illumination unit 30 by the first end 51 </ b> A of the coil spring 51. The tolerance is well absorbed, and the electrical connection between the two is preferably ensured.

  Since the second end 46B of the coil spring 46 is supported by the wall surface 48, and the second end 51B of the coil spring 51 is supported by the wall surface 52, the compression force acting on one coil spring is the other. Is not communicated to. Therefore, the urging forces for urging the first contact 45 and the second contact 50 by the two coil springs 46 and 51 are not averaged, and the first contact 45 and the second contact 50 have different suitable amounts of force. To touch the structure to be connected. As a result, even if the structure has a low rigidity such as the flexible substrate 32, the risk of causing brittle fracture or the like is greatly reduced, and the electrical connection between the adapter and the endoscope is reliably performed. be able to.

The first contact portion 42 is such that at least a part of the outer peripheral surface is fixed to the inner wall of the cylindrical portion 41 over the entire periphery by the adhesive layer 53, and the wall surface 48 does not communicate between the inside and the outside of the main body 44. Since it is interrupted, watertightness is maintained on the first contact portion 42 side of the electrical connection portion 40.
Therefore, even if water droplets or oil droplets or the like are attached to the distal end portion of the insertion portion 101 located inside the O-ring 24 when the adapter 1 is mounted, these liquids are inside the adapter 1. It does not enter and an adapter with high waterproofness can be configured.

  Furthermore, since the second contact portion 43 is not bonded to the tube portion 41 and can slide within the tube portion 41, the endoscope 100 is used in a high temperature environment, and the tube portion 41 expands in the axial direction. Even in such a case, the electrical connection between the first contact portion 42 and the second contact portion 43 is maintained by the relative movement of the main body 49 with the cylindrical portion 41. Therefore, the reliability of electrical connection can be further improved.

  Furthermore, since the end portion 44B of the main body 44 of the first contact portion 42 is formed in a tapered shape, even when there is a large amount of adhesive or the like for bonding to the tube portion 41, the end portion 44B flows along the end portion 44B. It is difficult to adhere to the main body 49 of the second contact portion 43. Therefore, the production efficiency can be improved by suppressing the occurrence of defective products in which the second contact portion 43 is bonded to the cylindrical portion 41.

  In addition, since the electrical connection portion 40 is inserted and disposed in the through hole 25 formed in the base body 23, the periphery of the cylindrical portion 41 is stably supported and is not easily deformed. Therefore, more reliable electrical connection can be performed.

In the present embodiment, the example in which the wall surface 48 as the first wall portion has a shape that does not allow the inside and the outside of the main body 44 to communicate with each other, but the second ends 46B and 51B of the coil springs 46 and 51 are surely supported. If it can do, there will be no restriction | limiting in particular in the shape of a 1st wall part and a 2nd wall part.
Therefore, as shown in FIG. 7, the wall surfaces 48 and 52 may have an opening so that the inside and the outside of the main bodies 44 and 49 communicate with each other. The wall surfaces 48 and 52 may not protrude from the inner walls of the main bodies 44 and 49 over the entire circumference. For example, the wall surfaces 48 and 52 may protrude from only a part of the inner wall and support the second end of the coil spring. Good.
However, as described above, if the wall portion 48 has a shape that does not allow the inside and the outside of the main body 44 to communicate with each other, a watertight structure is ensured in the electrical connection portion. Preferably, at least the wall portion 48 of the first contact portion 42 has a shape without an opening.

In the present embodiment, the example in which the end portion 44B of the first contact portion 42 is tapered is described. However, the end portion 44B and the end portion 49B of the second contact portion 43 adjacent to each other in the cylindrical portion are described. If at least one is formed in a tapered shape and the diameter is reduced as it approaches the other, adhesion between the second contact portion 43 and the tubular portion 41 described above can be prevented.
Therefore, instead of the shape of the present embodiment, only the end portion 49B may have a tapered diameter, or both the end portions 44B and 49B may have a tapered diameter. However, if both ends are tapered, the first contact portion and the second contact portion may be difficult to come into contact with each other, so care must be taken to prevent the end tip from being sharpened. .

  Next, a second embodiment of the present invention will be described with reference to FIG. The difference between the adapter of the present embodiment and the adapter 1 of the first embodiment described above is the structure of the electrical connection portion. In the following description, the same components as those already described are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 8 is a cross-sectional view showing the structure of the electrical connection portion 40a in the adapter of this embodiment. The first contact portion 42 and the second contact portion 43 have a common main body 61 instead of the main bodies 44 and 49. The first surface 62A of the partition wall 62 that divides the space inside the main body 61 into a space S1 in which the coil spring 46 is accommodated and a space S2 in which the coil spring 51 is accommodated supports the second end 46B of the coil spring 46. As one wall portion, the second surface 62B functions as a second wall portion that supports the second end portion 51B of the coil spring 51.

Also in the adapter of this embodiment provided with the electrical connection part 40a, the amount of urging force is optimized in each of the first contact 45 and the second contact 50, similarly to the adapter 1 of the first embodiment. The electrical connection with the endoscope can be reliably performed.
In addition, since the first contact portion 42 and the second contact portion 43 are integrally formed by using the common main body 61, the first contact portion 42 and the second contact portion 43 are not separated from each other. Can be electrically connected.

  The embodiments of the present invention have been described above. However, the technical scope of the present invention is not limited to the above-described embodiments, and the combinations of the components of the embodiments can be changed without departing from the spirit of the present invention. It is possible to make various changes to each component or delete them.

For example, in the first contact portion of the electrical connection portion, as in the modification shown in FIGS. 9A and 9B, the boundary portion between the base end portion 45A and the tip end portion 45B of the first contact 45a. In addition, a tapered portion 45 </ b> C having the same taper angle (including substantially the same) as the end portion 44 </ b> A of the main body 44 may be formed.
In this way, even when liquid enters the inside of the main body 44 from the opening 47, as shown by an arrow in FIG. 9A, the taper portion 45C is caused to move in accordance with the operation of the coil spring 46 extending in the axial direction. Is preferably discharged out of the main body 44. Therefore, corrosion of the main body 44 and the coil spring 46 due to the liquid remaining inside the main body 44 can be suitably prevented.
Further, when the adapter in which no external force acts on the first contact 45a is not attached, the tapered portion 45C is in close contact with the end portion 44A as shown in FIG. 9B. Therefore, it is possible to suitably prevent foreign matter from entering the inside of the main body 44.

  Further, in each of the above-described embodiments, the example in which the first elastic member and the second elastic member are coil springs has been described, but other elastic members such as conductive rubber may be used instead. .

In each of the above-described embodiments, the example of the side-view type adapter has been described. However, instead of this, a direct-view type adapter may be used.
Further, an adapter that does not include an optical system, includes only an electronic component such as an LED unit, and performs only illumination without adjusting the field of view of the endoscope may be used. Furthermore, the electronic component is not limited to the LED unit described above, and may be a resistor that electrically identifies the type of adapter mounted on the insertion portion, a thermistor that detects the temperature in the adapter, and the like.

In addition, the structure of the electrical connection part in the adapter of this invention may be provided not in an adapter but in the endoscope by the side to which an adapter is mounted | worn.
FIG. 10 shows the endoscope 120 provided with the electrical connection portion 40. The electrical connection portion 40 is attached to the distal end portion of the insertion portion 101 and connected to the main body portion 104 (not shown), and the first contact 45 is exposed at the distal end. In the adapter 70 attached to the endoscope 120, a rod-shaped conductor 71 is disposed at a portion where the electrical connection portion 40 is disposed, and is electrically connected to the flexible substrate 32.
In the endoscope 120 configured as described above, the number of movable parts in the counterpart adapter 70 is reduced, so that a structure with high water tightness can be realized more easily.

1 Endoscopy adapter 31 LED unit (electronic component)
40, 40a Electrical connection portion 41 Tube portion 42 First contact portion 43 Second contact portion 44 Main body 44A End portion 44B End portion 45, 45a First contact 45A Base end portion 45B Tip end portion 45C Taper portion 46 Coil spring (first elastic Element)
46A 1st end part 46B 2nd end part 47 Opening 48 Wall surface (1st wall part)
49B End 50 Second Contact 51 Coil Spring (Second Elastic Member)
51A 1st edge part 51B 2nd edge part 52 Wall surface (2nd wall part)
100 Endoscope 101 Insertion Unit 104 Main Body 109 Observation Optical System 120 Endoscope

Claims (6)

An electronic adapter, and an electrical connection portion that electrically connects the electronic component and an insertion portion of the endoscope, and an endoscope adapter that is detachable from the insertion portion,
The electrical connection is
An insulating cylinder,
A first contact connected to the insertion portion, a first elastic member that biases the first contact toward the insertion portion at the first end portion, and a second end portion of the first elastic member supported A first contact portion that is inserted into the tube portion and fixed to the inner wall of the tube portion,
A second contact connected to the electronic component, a second elastic member for biasing the second contact toward the electronic component at the first end, and a second end of the second elastic member are supported. A second contact portion having a second wall portion inserted into the tube portion,
With
An endoscope adapter, wherein when attached to the insertion portion, the electronic component and the insertion portion are electrically connected via the first contact portion and the second contact portion. The first contact portion has a main body that houses the first elastic member and a part of the first contact,
The first wall portion is blocked so that the inside and the outside of the main body do not communicate with each other, and the first contact portion is fixed to the inner wall of the cylindrical portion over the entire circumferential direction. The endoscope adapter according to claim 1.   The said electrical connection part is arrange | positioned so that the said 2nd contact and the said electronic component may be connected in the state in which the said 2nd elastic member was compressed. Endoscope adapter.   The end portion of the first contact portion and the end portion of the second contact portion that are adjacent to each other in the cylindrical portion are formed in a tapered shape that decreases in diameter as approaching the other. The endoscope adapter according to any one of 1 to 3. The main body has one end that is tapered to have an opening at the tip,
The first contact is
A proximal end housed in the body;
A tip portion protruding from the opening and connected to the insertion portion;
The taper part which has the same taper angle as one end part of the said main body between the said front-end | tip part and the said base end part, It has any one of Claim 2 to 4 characterized by the above-mentioned. Endoscope adapter. An insertion portion having an observation optical system at a distal end; an electrical connection portion provided in the insertion portion and electrically connected to the endoscope adapter; and a main body portion supplying electric power to the endoscope adapter. An endoscope,
The electrical connection is
An insulating cylinder,
A first contact connected to the endoscope adapter; a first elastic member that biases the first contact toward the endoscope adapter at a first end; and a first contact of the first elastic member. A first contact portion that has a first wall portion that supports the second end portion, is inserted into the tubular portion, and is fixed to the inner wall of the tubular portion;
A second contact electrically connected to the main body, a second elastic member for urging the second contact toward the main body at the first end, and a second end of the second elastic member A second contact portion having a second wall portion supporting the portion and inserted into the cylindrical portion,
An endoscope comprising:

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