JP2013056003A - Imaging device and endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging device including a configuration allowing avoidance of contact of a mounted member on a substrate with an exterior member when the device is assembled while miniaturizing the device, and securely preventing displacement of a portion of the substrate where the mounted member is provided.SOLUTION: A substrate fixing member 20 includes: a fixing part 20a where a first portion 22a is fixed; a substrate downward pressing part 20b for positioning a mounting surface 22bj of a mounting area A lower than an upper surface 22at by pressing down a second portion 22b lower than the upper surface 22at of the first portion 22a and cranking the second portion 22b, and fixing the position of the second portion 22b; and a housing part 20c having a wall 52 surrounding the mounting area A as seen from the top for housing an electronic component 151 mounted on the mounting surface 22bj of the mounting area A. An apex 52t of the wall 52 is located at a height position higher than the electronic component 151 but not higher than the upper surface 22at of the first portion 22a.

Description

  The present invention relates to an imaging apparatus and an endoscope that include a substrate having a mounting member provided on a mounting surface in a mounting area, and a substrate fixing member to which the substrate is fixed.

  An imaging apparatus, for example, an imaging apparatus used for an endoscope, captures an image of a region to be examined in a subject. For example, an insertion direction proximal end side (hereinafter simply referred to as a proximal end) of an insertion portion of an endoscope. A configuration of an imaging device that can be connected to an eyepiece provided on a side) is well known.

  Also, endoscopes need to be reliably cleaned, disinfected and sterilized after use. As a method for sterilizing an endoscope, a high-temperature high-pressure steam sterilization process (hereinafter referred to as an autoclave process) for sterilizing an endoscope using high-temperature high-pressure steam is well known.

  Here, usually, an imaging unit comprising an imaging device, an objective optical system, and the like constituting the imaging device is provided in an exterior member of the imaging device. However, in autoclave processing, high-temperature and high-pressure steam is also generated in the imaging device. enter in.

  At this time, if the imaging unit touches the high-temperature and high-pressure steam, the imaging device may break down or the objective optical system may become cloudy. Need to be provided.

  Therefore, in Patent Document 1, in an imaging device attached to an eyepiece of an endoscope, a case having watertightness and airtightness is provided in an exterior member of the imaging device, and the imaging unit is sealed in the case. The structure which protects an imaging unit from the high temperature / high pressure steam which approached in the imaging device by stopping is disclosed.

JP 2010-253267 A

  Incidentally, a configuration in which switch buttons for various endoscope operations are provided on the exterior member of the imaging apparatus is well known. In such a configuration, the exterior member is generally provided with a switch mounted on a substrate or the like at a position close to the inner surface of the exterior member.

  In order to reduce the size of the imaging apparatus, a configuration in which a substrate on which a switch is mounted is fixed on the case described in Patent Document 1 described above.

  Furthermore, a configuration in which an electronic component such as a noise filter is mounted on a substrate for a known EMC (Electromagnetic Compatibility) countermeasure is well known, and an insulating adhesive or the like is applied to the substrate to protect the electronic component. A configuration in which the liquid sealing material is applied is also well known.

  Here, when assembling the imaging apparatus, when an electronic component such as a noise filter, a switch, or a substrate provided with a liquid sealing material is fixed on the case described above, is inserted into the exterior member of the imaging apparatus. Since the electronic components and the liquid sealing material mounted on the substrate have a predetermined height, there is a problem that the assembling property is poor because they come into contact with the exterior member.

  Further, if the substrate is not securely fixed to the case, there is a problem that the mounting member such as an electronic component or a liquid sealing material is likely to come into contact with the exterior member due to the displacement of the substrate after being fitted into the exterior member. .

  Therefore, by enlarging the image pickup device and securing a large internal space of the image pickup device, a measure to avoid the contact of the mounting member on the substrate to the exterior member and improve the assemblability can be considered. This is not preferable because the imaging device is increased in size.

  In addition, in order to firmly fix the board to the case, a configuration in which the board is fixed to the case using screws or the like is also conceivable. However, there is a problem that a space for fixing screws cannot be secured.

  The present invention has been made in view of the above-described problems, and can reduce the size and avoid contact of the mounting member on the substrate with the exterior member at the time of assembly, and further includes a portion on which the mounting member of the substrate is provided. It is an object of the present invention to provide an imaging apparatus and an endoscope that have a configuration that can reliably prevent the positional deviation.

  In order to achieve the above object, an imaging device according to an aspect of the present invention includes a first part and a second part extended from the first part, and a mounting surface of a mounting area in the second part. An imaging device comprising: a substrate provided with a mounting member; and a substrate fixing member to which the substrate is fixed, wherein the substrate fixing member includes a fixing portion to which the first part of the substrate is fixed; The second portion is pushed lower than the non-fixed surface opposite to the fixed surface to the fixed portion of the first portion and bent into a crank shape, thereby making the mounting surface of the mounting area non-fixed. The mounting portion provided on the mounting surface of the mounting area is accommodated in a state where the mounting area is lower than the fixing surface and the mounting portion provided on the mounting surface of the mounting area. Anda housing portion wall portion is provided surrounding the top portion of the wall, the higher than mounting member is positioned on the non-fixed surface of the height of said first portion.

  Moreover, the imaging device of any one of Claims 1-10 can be connected to the endoscope in 1 aspect of this invention.

  According to the present invention, it is possible to avoid the contact of the mounting member on the substrate with the exterior member during assembly, and to surely prevent the position shift of the portion where the mounting member of the substrate is provided, while achieving downsizing. An imaging apparatus and an endoscope can be provided.

The figure which shows the outline of a structure of the endoscope system provided with the imaging device of this Embodiment. 1 is a partial cross-sectional view showing the configuration of the camera head of FIG. The perspective view which expands and shows what fixed the board | substrate and the GND board to the board | substrate fixing member of FIG. Substrate fixing member along the line IV-IV in FIG. 3, partial sectional view of the substrate FIG. 3 is an exploded perspective view showing a state where the substrate is separated from the substrate fixing member of FIG. 3. The perspective view which shows the GND board of FIG. 3 from the back surface side FIG. 5 is a partial cross-sectional view showing a cross section after fixing the GND plate and the board to the board fixing member along the line VII-VII in FIG. 5 together with the airtight case and the exterior cover. The exploded perspective view which shows the board | substrate fixing member of FIG. 3 with an airtight case The perspective view which shows the state which fixed the board | substrate fixing member of FIG. 3 to the airtight case of FIG. 8 in the state which does not penetrate a board | substrate to the 1st through-hole of a board | substrate fixing member. FIG. 8 is a partial cross-sectional view showing a state where the airtight case of FIG. 8 and the substrate fixing member to which the GND plate and the substrate of FIG. 3 are fixed are fixedly inserted into the rear cover. The perspective view which shows the state in which the eyepiece of an endoscope is connected to the coupler part of the camera head of FIG. FIG. 11 is a cross-sectional view of the vicinity of the connecting portion between the coupler portion and the eyepiece in FIG. The perspective view which expands and shows the coupler part of FIG. 11 from the back side The partial expanded sectional view which shows the structure by which the protrusion was provided in the upper inner peripheral surface of the mount member in the coupler part of FIG. The expanded perspective view which shows the shape of the insertion part of the conventional mount member with a coupler part The expansion perspective view which shows the shape of the insertion part of the mount member of FIG. 14 with a coupler part FIG. 2 is a partial cross-sectional view of the camera head showing a state where a rear screw is removed from the spacer ring of FIG. 17 is a partial perspective view of the rear cover of FIG. 17 as viewed from the XVIII direction in FIG. 18 is a partial cross-sectional view of the rear cover taken along line XIX-XIX in FIG. The perspective view which shows the imaging unit of FIG. The perspective view which looked at the imaging unit of FIG. 20 from the direction different from FIG. Sectional drawing which shows the imaging unit along a IIXII-IIXII line in FIG. 20 with a rear case The partial perspective view which shows the front end side of the front cover of FIG. 2 except a ring The fragmentary perspective view which shows the state which mounted | wore the groove | channel on the front end side of the front cover of FIG. Sectional view of the front cover along the line IIXV-IIXV in FIG. The perspective view which shows the ring of FIG. The fragmentary perspective view which shows the base end side of the rear cover of FIG. The fragmentary perspective view which shows the state where the ring and the rear screw were removed from the base end side of the rear cover of FIG. The perspective view which shows the ring of FIG. A perspective view of a camera head showing the shape of a conventional coupler unit The perspective view which shows the structure of the connection member to which the endoscope in the conventional camera head is connected. The perspective view which shows the structure of the modification of the connection member of the camera head of this structure. Sectional view of the camera head along the line IIIXIII-IIIXIII in FIG. The perspective view which expands and shows the state by which the rigid part of the 2nd board | substrate was fixed to the fixed frame of FIG.

  Embodiments of the present invention will be described below with reference to the drawings. In the embodiment described below, the imaging apparatus will be described by taking an imaging apparatus connected to an endoscope as an example.

FIG. 1 is a diagram illustrating an outline of a configuration of an endoscope system including the imaging apparatus according to the present embodiment.
As shown in FIG. 1, an endoscope system 1 includes an endoscope 2, a camera head 3 that is an imaging device that can be connected to the endoscope 2, and a light source device that supplies illumination light to the endoscope 2. 4, a camera control unit (CCU) 5 that performs signal processing on an image pickup signal from the camera head 3, and a monitor 6 that displays a video signal output from the CCU 5. ing.

  The endoscope 2 includes an elongated insertion portion 7, a gripping portion 8 having a diameter larger than that of the insertion portion 7 provided on the proximal end side of the insertion portion 7, and a proximal end in the insertion direction S of the gripping portion 8 ( Hereinafter, the main part is composed of an eyepiece 9 (hereinafter simply referred to as an eyepiece) provided at the base end.

  Further, one end of the light guide cable 10 detachably attached to the light source device 4 via the connector 11 is connectable to a base provided on the side portion of the grip portion 8 of the endoscope 2. As a result, light emitted from a lamp (not shown) in the light source device 4 is supplied to the endoscope 2 via the light guide cable 10, and the distal end of the insertion portion 7 in the insertion direction S (hereinafter simply referred to as the distal end). The object is irradiated from an illumination window (not shown) provided on the subject.

  The image in the subject illuminated by the illumination light is formed into an optical image on an objective optical system (not shown) provided at the distal end of the insertion portion 7, and the formed optical image is provided in the insertion portion 7. Since the light is incident on a lens provided in the eyepiece 9 through a relay lens (not shown) or the like, an operator can observe an optical image through the eyepiece 9.

  Further, as described above, the camera head 3 can be connected to the eyepiece 9 of the endoscope 2. A camera cable 12 extends from the camera head 3, and an extended end of the camera cable 12 is detachable from the CCU 5 via a connector 13 provided at the extended end.

  The CCU 5 generates an image signal based on an imaging signal transmitted from the camera head 3 via the camera cable 12, and displays an image in the subject on the monitor 6 as an endoscopic image.

  Next, a specific configuration of the above-described camera head 3 will be described with reference to FIG. FIG. 2 is a partial cross-sectional view showing the configuration of the camera head of FIG.

  As shown in FIG. 2, the camera head 3 includes a coupler portion 15 and an exterior portion 17 whose tip is fixed to the coupler portion 15 to constitute a main portion.

  The coupler unit 15 is a member to which the eyepiece 9 of the endoscope 2 is connected, and has a mount member 31 used when the eyepiece 9 is fixed inside. In addition, the distal end of the exterior portion 17 is fixed to the outer periphery of the base end of the mount member 31.

  The coupler portion 15 is connected to the mount member 31 so as to be movable in a height direction M perpendicular to the insertion direction S via a spring 71 (see FIG. 11) described later. The moving structure of the coupler unit 15 and the connection fixing structure of the eyepiece 9 to the mount member 31 of the coupler unit 15 will be described later.

  The exterior part 17 is mainly composed of a front cover 17a and a rear cover 17b that can be connected to the base end of the front cover 17a. A front end 17ak formed in a small diameter of the front cover 17a is fixed to the outer periphery of the base end of the mount member 31.

  The front cover 17a and the rear cover 17b can be joined in a watertight manner via the packing 18. The packing 18 prevents water or the like from entering the exterior portion 17 from the connection portion between the front cover 17a and the rear cover 17b.

  A plurality of through holes are formed along the height direction M on one side of the front cover 17a and the rear cover 17b, and a plurality of switch buttons for operating the endoscope 2 are formed in the through holes. 19 is inserted.

  Further, the rear cover 17b is fixed to the base end of the rear cover 17b by pressing the front end of the rear cover 17b against the base end of the front cover 17a through the packing 18 in the insertion direction S (hereinafter simply referred to as the front). A rear screw 50, which will be described later, is freely abuttable through a watertight packing.

  Further, an airtight case 16 made of metal as a case member is provided in the exterior portion 17.

  The airtight case 16 is fixed to a front case 16a, an intermediate case 16c connected to the base end of the front case 16a, a rear case 16b connected to the base end of the intermediate case 16c, and a base end of the rear case 16b. The main part is composed of the hermetic connector 16d.

  Note that the front end side of the front case 16 a is fixed to the inner peripheral surface on the front end side of the front cover 17 a and the inner peripheral surface of the base end of the mount member 31. The hermetic connector 16d is fixed to the rear case 16b by welding or the like.

  A substrate fixing member 20 is fixed between the airtight case 16 and the exterior portion 17 on the upper surface of the airtight case 16 with high positional accuracy, and a substrate 22 is fixed on the upper surface of the substrate fixing member 20. ing.

  A plurality of switches 21 are provided on the upper surface, which is a mounting surface of the substrate 22, at positions facing the plurality of switch buttons 19 so that the switch buttons 19 can be contacted. The detailed configuration of the substrate fixing member 20 and the substrate 22 will be described later.

  An imaging unit 100 is provided inside the airtight case 16. Specifically, a lens frame 51 that holds a plurality of lenses 30, a prism 43, a plurality of imaging elements 33, and electrical components such as various substrates are provided inside the airtight case 16.

  More specifically, an observation window 30a is fixed to the front end of the front case 16a. When the eyepiece 9 of the endoscope 2 is connected to the coupler unit 15 of the camera head 3, the observation window 30 a is positioned facing the lens in the eyepiece 9 in the insertion direction S.

  A plurality of lenses 30 held by a lens frame 51 are provided in the airtight case 16 behind the observation window 30a in the insertion direction (hereinafter simply referred to as the rear). The prism 43 held by the prism frame 143 is located at the imaging position, and for example, three imaging elements 33 such as CCDs are located at positions facing the emission surface of the prism 43.

  Each image sensor 33 is fixed to the image sensor substrate 32, and the prism frame 143 and the image sensor substrate 32 are fixed to a fixed frame 80 (see FIG. 20) provided in the airtight case 16 to be described later. It is fixed against. Further, the proximal end side of the lens frame 51 and the distal end side of a fixing frame 80 (see FIG. 20) described later are fixed to the inner peripheral surface of the intermediate case 16c.

  In the airtight case 16, the first substrate 35 and the second substrate 38 are located behind the three imaging elements 33.

  The 1st board | substrate 35 and the 2nd board | substrate 38 are being fixed to the fixing frame 80 (refer FIG. 20) mentioned later. The second substrate 38 includes a rigid portion 38a and flexible portions 38b and 38c. That is, the second substrate 38 is composed of a rigid flexible substrate.

  A flexible substrate 34 extends from the first substrate 35, and the extending end is electrically connected to a connection connector 138 fixed to a fixing frame 80 (see FIG. 20) described later.

  Further, the flexible portion 38 c extends from the rigid portion 38 a of the second substrate 38, and the extending end is electrically connected to the connection connector 138. In addition, each imaging element substrate 32 is electrically connected to the connection connector 138.

 The first substrate 35 is, for example, a substrate used for driving the image sensor 33, and the second substrate 38 is, for example, an A / D for converting a video signal into a digital signal and transmitting it. It is a substrate for conversion.

  In the second substrate 38, the end of the flexible portion 38 b is electrically connected to the connector 39.

  The hermetic connector 16d has a main part composed of a bottom part and a cylindrical part extending rearward from the outer peripheral edge part of the bottom part, and a plurality of conductive pins 42 penetrating the bottom part along the insertion direction S are formed on the bottom part. Is provided.

  As a result, the substrate 120 provided on the bottom surface of the bottom portion and the substrate 45 positioned in the cylindrical portion provided on the bottom surface of the bottom portion are electrically connected by the conductive pins 42. The substrate 120 is electrically connected to the connector 39.

  The conductive pin 42 is electrically connected to an end portion of a second portion 22b (see FIG. 3) described later of the substrate 22 described above. That is, the substrate 22 and the substrate 45 are fixed by soldering or the like in the hermetic connector 16d.

  The distal end of the cable connector 41 is fixed to the proximal end of the hermetic connector 16d. A spacer ring 179 is fixed to the base end of the cable connector 41, and the distal end of the camera cable 12 is connected to the inner peripheral surface of the spacer ring 179.

  A plurality of electric cords (not shown) are housed inside the camera cable 12, and the distal ends of the electric cords extend into the cable connector 41 and are electrically connected to the substrate 45.

  Further, the outer peripheral surface of the camera cable 12 is covered with a bend preventing 44 that prevents the camera cable 12 from being bent suddenly. Further, the above-described rear screw 50 is movably covered on the outer periphery of the folding stopper 44.

  Furthermore, a male screw is formed on the outer peripheral surface of the spacer ring 179, and a female screw of the rear screw 50 can be screwed into the male screw.

  When the female screw of the rear screw 50 is screwed into the male screw of the spacer ring 179, the rear screw 50 moves forward, so that the rear cover 17b with which the rear screw 50 abuts is pressed forward to the base end of the front cover 17a. While crushing the packing 18, the front end of the rear cover 17 b abuts forward with an urging force. This ensures the water tightness of the part. Naturally, the packing between the base end of the rear cover 17b and the rear screw 50 is also crushed, so that watertightness at the portion is ensured.

  Next, the structure of the board | substrate fixing member 20 fixed to the upper surface of the airtight case 16 and the board | substrate 22 fixed to the board | substrate fixing member 20 is demonstrated using FIGS.

  3 is an enlarged perspective view showing the substrate and the GND plate fixed to the substrate fixing member of FIG. 2, and FIG. 4 is a substrate fixing member along the line IV-IV in FIG. 5 is an exploded perspective view showing a state where the substrate is separated from the substrate fixing member of FIG. 3, FIG. 6 is a perspective view showing the GND plate of FIG. 3 from the back side, and FIG. It is a fragmentary sectional view which shows the cross section after fixing a GND board and a board | substrate to the board | substrate fixing member along a -VII line with an airtight case and an exterior cover.

  8 is an exploded perspective view showing the substrate fixing member of FIG. 3 together with the airtight case. FIG. 9 shows a state where the substrate fixing member of FIG. 3 is fixed to the airtight case of FIG. FIG. 10 is a perspective view showing a state in which the substrate is not inserted into the through hole, and FIG. 10 is a state in which the airtight case of FIG. 8 is fixed to the GND plate and the substrate fixing member to which the substrate is fixed. FIG.

  As shown in FIG. 3, the substrate 22 is fixed to the substrate fixing member 20, and includes a first portion 22a and a second portion 22b extending rearward from the first portion 22a. The main part is composed.

  The substrate 22 only needs to have at least the second portion 22b made of a flexible substrate, but the first portion 22a may also be made of a flexible substrate. That is, the substrate 22 itself may be composed of a flexible substrate.

  Further, the second portion 22b of the substrate 22 is formed narrower in the width direction N orthogonal to the insertion direction S and the height direction M than the first portion 22a.

  As shown in FIG. 3, an electronic component 151 as a mounting member is mounted on the mounting surface 22 bj in the mounting area A in the second portion 22 b of the substrate 22. The electronic component 151 includes the noise filter described above.

  The substrate fixing member 20 is made of, for example, resin, and is fixed to the upper surface of the airtight case 16 while the substrate 22 is fixed, as shown in FIGS. 3, 5, 8, and 9. Thus, the main part is comprised from the fixing | fixed part 20a, the board | substrate pushing down part 20b, and the accommodating part 20c.

  The fixing portion 20a is a portion to which the first portion 22a of the substrate 22 is fixed. In the insertion direction S, the rear half is formed wider in the width direction N than the front half, and the first portion The outer shape is substantially the same as 22a.

  Further, as shown in FIGS. 3, 5, 8, and 9, on both side surfaces of the fixing portion 20a, a protruding portion 56 that projects outward in the width direction N is formed on the distal end side of the rear half in the insertion direction S. Is formed.

  The overhanging portion 56 abuts against the inner peripheral surface of the rear cover 17b when the substrate fixing member 20 is fixed to the airtight case 16 so that the substrate fixing member 20 is in contact with the rear cover 17b. The movement in the width direction N is prevented.

  Further, as shown in FIG. 8, for example, two protrusions 171 extending toward the airtight case 16 in the height direction M are formed on the bottom surface of the fixed portion 20a.

  The protrusion 171 is inserted into a bottomed hole 16x formed on the upper surface of the airtight case 16, thereby positioning the substrate fixing member 20 with respect to the airtight case 16, and when the rear cover 17b is removed, together with the rear cover 17b, the airtight case 16 is a member that prevents the substrate fixing member 20 from being detached from the upper surface of 16.

  Further, as shown in FIGS. 3, 5, and 8, for example, two convex portions 170 projecting toward the airtight case 16 in the height direction M are provided at the rear side of the protrusion 171 on the bottom surface of the fixing portion 20 a. Is formed. In addition, the protrusion height of the convex part 170 is formed below the height of the step part D mentioned later formed in the upper surface of the rear case 16b.

  When the convex portion 170 is fitted into the exterior portion 17 in a state where the substrate fixing member 20 is fixed to the airtight case 16, the base end surface 20bk (see FIG. 8) of the substrate push-down portion 20b is formed by the inner peripheral surface of the rear cover 17b. By being pushed forward, the front surface comes into contact with the stepped portion D formed on the upper surface of the rear case 16b. As a result, the substrate fixing member 20 is positioned with respect to the airtight case 16 in the insertion direction S.

  As shown in FIGS. 3, 5, 8, and 9, on the upper surface of the fixing portion 20 a, the distal end and the proximal end, along the width direction N and in the height direction M, opposite to the airtight case 16. A bank portion 53 is formed to stand upright.

  When the bank 53 is inserted into the rear cover 17b in a state where the substrate 22 is fixed to the substrate fixing member 20, as shown in FIG. 10, the substrate fixed to the fixing portion 20a on the inner peripheral surface of the rear cover 17b. It is a member which prevents that 22 1st site | part 22a contacts.

  Also, as shown in FIGS. 3 and 5 to 9, two protrusions that stand on the opposite side of the airtight case 16 in the height direction M on the front half of the insertion direction S on the upper surface of the fixing portion 20 a. 54 is formed, and two protrusions 55 that stand higher than the protrusion 54 are formed on the opposite side of the airtight case 16 in the height direction M in the rear half of the insertion direction S on the upper surface of the fixed portion 20a. Has been.

  When the protrusions 54 and 55 are fitted into the exterior portion 17 in a state where the substrate fixing member 20 is fixed to the airtight case 16, the top surface 54s (see FIG. 3) of the protrusion 54 is the inner peripheral surface of the front cover 17a. And the top surface 55s (see FIG. 3) of the protrusion 55 is also in contact with the inner peripheral surface of the rear cover 17b, thereby fixing the position of the board fixing member 20 in the height direction M with respect to the exterior portion 17. .

  Further, as shown in FIG. 5, screw holes 20ah are respectively formed at the end portions in the width direction N at the distal end portion, the proximal end portion, and the central portion on the upper surface of the fixing portion 20a.

  Further, as shown in FIG. 5, a plurality of convex portions 144 are formed on the upper surface of the fixing portion 20 a so as to stand lower than the protrusions 54 on the side opposite to the airtight case 16.

  Further, as shown in FIG. 8, in the fixing portion 20a, a plurality of through-holes 20as penetrating in the height direction M are formed in the distal end portion, the proximal end portion, and the central portion, respectively.

  As shown in FIGS. 3, 5, and 7, a GND plate 57 sandwiched between the fixing portion 20 a and the first portion 22 a of the substrate 22 is fixed to the upper surface of the fixing portion 20 a. The GND plate 57 has an outer shape substantially the same as that of the fixed portion 20a.

  The GND plate 57 is formed of a metal plate-like member. As shown in FIGS. 5 and 6, the plurality of holes 57j into which the plurality of convex portions 144 of the fixing portion 20a are inserted and the projections 54 and 55 pass therethrough. A hole 57i penetrating in the height direction M and a plurality of holes 57h penetrating in the height direction M facing the screw hole 20ah are formed.

  In addition, the convex part 144 fits into the hole 57j, and the projections 54 and 55 penetrate the hole 57i, whereby the GND plate 57 is positioned with respect to the fixed part 20a. Accordingly, the hole 57h is located opposite to the screw hole 20ah, and a plurality of finger portions 66 (see FIG. 6) described later are located opposite to the through hole 20as.

  Further, the convex portion 144 is positioned opposite to the switch 21 formed in the first portion 22a of the substrate 22 after being fitted into the hole 57j, so that even if the switch 21 is pressed by the switch button 19, the switch Since 21 is in contact with the convex portion 144 formed of resin, it does not come into contact with the GND plate 57. That is, it is possible to prevent a short circuit due to the switch 21 coming into contact with the GND plate 57.

  Moreover, the GND board 57 has the finger part 66 formed from the several metal extended from the bottom face to the airtight case 16 side in the height direction M, as shown in FIGS.

  The finger portion 66 extends to the airtight case 16 side in the height direction M from the bottom surface of the fixed portion 20a through a plurality of through holes 20as formed in the fixed portion 20a, and is made of metal. By making contact with the upper surface of the airtight case 16, the GND of the first portion 22a of the substrate 22 electrically connected to the GND plate 57 is grounded, and the above-described EMC countermeasure is taken. The airtight case 16 is grounded via the camera cable 12.

  In addition, the finger part 66 is provided in the vicinity of a hole 57j through which a screw, which will be described later, is passed, so that the deformation of the GND plate 57 accompanying the formation of the finger part 66 is prevented.

  Here, in the first portion 22a of the substrate 22, a hole 22ai that penetrates in the height direction M through which the protrusions 54 and 55 penetrate, and a plurality of holes 22ah that face the screw hole 20ah and the hole 57h are arranged in the height direction M. A plurality are formed so as to penetrate through.

  The first portion 22a is positioned with respect to the fixing portion 20a and the GND plate 57 by penetrating the projections 54 and 55 through the hole 22ai. Thus, the hole 22ah is positioned opposite to the screw hole 20ah and the hole 57h.

  Further, a screw (not shown) is screwed and fixed to the screw hole 20ah through the hole 22ah and the hole 57h, so that the GND on the fixing surface 22ac of the first portion 22a is brought into close contact with the GND plate 57, thereby being connected to the GND plate. The first portion 22a and the GND plate 57 are fixed to the fixing portion 20a.

  At this time, as described above, the first portion 22a and the GND plate 57 are fixed to the fixing portion 20a with high positional accuracy by the protrusions 54 and 55.

  In addition, the plurality of switches 21 described above are protruded upward in the height direction M at the first portion 22 a of the substrate 22. As described above, each switch 21 has the first portion 22a and the GND plate 57 fixed to the fixing portion 20a with high positional accuracy, and the board fixing member 20 is positioned relative to the upper surface of the airtight case 16. Since it is fixed with high precision, the switch button 19 is positioned with high precision.

  As shown in FIGS. 3 and 5, the substrate pressing portion 20 b is located adjacent to the base end of the fixing portion 20 a in the insertion direction S that coincides with the extending direction of the substrate 22, and is a substrate fixing member. 20, a first through hole 58 formed so as to penetrate in the height direction M, and a base end side edge of the first through hole 58 formed in the substrate fixing member 20 by the first through hole 58. The main part is composed of the part 60.

  The substrate push-down portion 20b pushes the second portion 22b of the substrate 22 lower than the upper surface 22at, which is a non-fixed surface opposite to the fixed surface 22ac of the first portion 22a, and as shown in FIG. The mounting surface 22bj in the mounting area A is positioned lower than the upper surface 22at and the position of the second portion 22b is fixed by bending the substrate into the shape.

  Specifically, as shown in FIGS. 3 to 5, the second portion 22 b of the substrate 22 is inserted into the first through hole 58, so that the mounting surface 22 bj comes into contact as shown in FIG. 4. The second portion 22b is pushed down below the upper surface 22at of the first portion 22a by the bottom portion 60t of the edge portion 60 to be bent into a crank shape.

  At this time, the mounting surface 22bj comes into contact with the bottom 60t with an elastic force, so that the position of the second portion 22b in the insertion direction S is fixed.

  In addition, after the 2nd site | part 22b is pushed down by the board | substrate pushing down part 20b, the mounting area A is located in the accommodating part 20c, as shown in FIG. 3, FIG.

  The storage portion 20c stores the electronic component 151 mounted on the mounting surface 22bj of the mounting area A, and includes a wall portion 52 that surrounds the mounting area A in a plan view.

  Specifically, the storage portion 20 c is formed along the height direction M in the substrate fixing member 20, and is formed adjacent to the base end of the first through hole 58 via the edge portion 60. The main part is composed of a second through hole 59 penetrating through and a wall part 52 surrounding the second through hole 59 formed in the substrate fixing member 20 by the second through hole 59. The wall portion 52 located on the distal end side also serves as the edge portion 60 that constitutes the substrate pressing portion 20b described above.

  In the storage portion 20c, the mounting surface 22bj in the second portion 22b of the substrate 22 is located in contact with the bottom 52t of the wall portion 52 with elastic force as shown in FIG. In A, the electronic component 151 mounted on the mounting surface 22bj is exposed upward in the height direction M through the second through hole 59.

  Further, in this state, as shown in FIG. 4, the back surface of the portion located in the storage portion 20 c in the second portion 22 b may be fixed to the upper surface of the airtight case 16 by the reinforcing plate 62.

  The reinforcing plate 62 prevents the mounting area of the second part 22b from being bent in order to make it easier to mount the electronic component 151 on the mounting surface 22bj in the mounting area A of the second part 22b.

  Further, as shown in FIG. 4, in addition to the purpose of protecting the electronic component 151, the purpose of improving the mounting strength of the electronic component 151 on the mounting surface 22bj is to be in the space K of the second through hole 59 of the storage portion 20c. The liquid sealing material 61 as a mounting member may be applied.

  Since the space K is covered with the wall portion 52, when the liquid sealing material 61 is applied to the space K, it is not only easy to apply, but the liquid sealing material 61 is more than the top portion 52 j of the wall portion 52. Low in the height direction M and easy to apply.

  Further, as shown in FIG. 4, a lid 63 may be placed on the liquid sealing material 61 applied to the space K as long as it does not become higher in the height direction M than the top 52j.

  Further, as shown in FIG. 8, a notch 20ck for pulling out the second portion 22b rearward is formed on the bottom side of the wall portion 52 at the base end of the storage portion 20c.

  As shown in FIG. 4, the top 52j of the wall 52 is in a state where the mounting surface 22bj of the second portion 22b is in contact with the bottom 52t of the wall 52 and the electronic component 151 is stored in the storage 20c. , The height is higher in the height direction M than the upper surfaces of the electronic component 151, the liquid sealing material 61, and the lid 63, and further, the height is not more than the upper surface 22at of the first portion 22a.

  As a result, as shown in FIG. 10, when the substrate 22 is fixed to the substrate fixing member 20, when inserted into the rear cover 17b, the top portion 52j of the wall portion 52 contacts the inner peripheral surface of the rear cover 17b. Even if it happens, the electronic component 151 and the liquid sealing material 61 do not come into contact with each other, so that the electronic component 151 and the liquid sealing material 61 are damaged or inserted into the rear cover 17b due to the contact. There is no decline in performance.

  As described above, in the present embodiment, the electronic component 151 on the substrate 22 is mounted in the mounting area A in a state where the first portion 22a of the substrate 22 is fixed to the fixing portion 20a of the substrate fixing member 20 with the screw. The second portion 22b is inserted into the first through-hole 58 formed in the substrate 22, so that the second portion 22b is bent into a crank shape from the upper surface 22at of the first portion 22a. The position in the insertion direction S of the second part 22b is fixed by being located lower in the height direction M and the second part 22b contacting the bottom 60t of the edge 60 with elastic force. .

  Further, in the storage portion 50c, the top portion 52j of the wall portion 52 surrounding the electronic component 151 is positioned lower in the height direction M than the upper surface 22at of the first portion 22a of the substrate 22, and the electronic component 151 or liquid seal It was shown to be positioned higher in the height direction M than the material 61.

  According to this, at the time of assembling the camera head 3, as shown in FIG. 10, the substrate fixing member 20 to which the substrate 22 fixed to the upper surface of the airtight case 16 is fixed rearwardly in the rear cover 17b. When the insert is inserted, the electronic component 151 and the liquid sealing material 61 do not come into contact with the inner peripheral surface of the rear cover 17b even if the top 52j of the wall 52 comes into contact.

  Furthermore, since the periphery of the electronic component 151 and the liquid sealing material 61 is covered with the wall portion 52, the wall portion 52 can prevent external contact with these mounting members.

  Therefore, the mounting members such as the electronic component 151 and the liquid sealing material 61 are not damaged, and the assembling property is not deteriorated with the contact of the mounting members with the rear cover 17b. Furthermore, in order to avoid contact of the electronic component 151 and the liquid sealing material 61 with the rear cover 17b, it is not necessary to increase the size of the rear cover 17b in order to ensure a large internal space of the rear cover 17b.

  Further, the contact of the edge 60 with the bottom 60t can easily fix the position of the second portion 22b in the mounting area S in the mounting area A without using a screw.

  As described above, the camera having a configuration capable of avoiding the contact of the mounting member on the substrate 22 to the exterior portion 17 during assembly and further preventing the displacement of the mounting area A of the substrate 22 during the assembly while reducing the size. The head 3 and the endoscope 2 to which the camera head 3 is connected can be provided.

  In the present embodiment, the camera head 3 is shown as an example to which the endoscope 2 can be connected, but it can also be applied to a camera head used for other than the endoscope. Not too long.

  11 is a perspective view showing a state in which the endoscope eyepiece is connected to the coupler portion of the camera head of FIG. 2, and FIG. 12 is a cross-sectional view of the vicinity of the connecting portion between the coupler portion and the eyepiece of FIG. FIG. 13 is an enlarged perspective view showing the coupler portion of FIG. 11 from the rear side.

  By the way, as described above, the eyepiece 9 of the endoscope 2 can be connected to the coupler unit 15 of the camera head 3.

  This connection structure will be briefly described. As shown in FIG. 12, the upper part of the mount member 31 provided in the coupler portion 15 has through holes penetrating in the height direction M at the end portions in the width direction N, respectively. As shown in FIGS. 11 and 12, one end is fixed to the upper portion of the coupler portion 15 in the height direction M and the other end is the height of the coupler portion 15. A mandrel 70 fixed to a lower part 15nt (see FIG. 13) in the direction M is inserted.

  Thereby, as described above, since the mount member 31 is fixed to the tip 17ak of the front cover 17a, the coupler portion 15 is movable up and down in the height direction M with respect to the mount member 31. Yes.

  Further, an elongated spring 71 is inserted along the height direction M between the lower portion 15 nt of the coupler portion 15 and the upper portion of the mount member 31 on the outer periphery of the mandrel 70. Note that the spring 71 has an upper end fixed to the upper portion of the mount member 31 and a lower end fixed to the lower portion 15nt of the coupler portion 15 so that the coupler portion 15 is always regulated by a stopper portion (not shown). It is pushing up.

  Therefore, when connecting the eyepiece 9 to the coupler unit 15, the spring 71 is compressed along the height direction M against the extension force of the spring 71 by pushing the coupler unit 15 downward in the height direction M. Then, the eyepiece 9 is fitted into the fitting portion 31w (see FIG. 12) of the mount member 31 through the circular opening 15i (see FIG. 13) elongated in the height direction M of the coupler portion 15, and then the coupler portion 15 When the hand is released, the contact surface 15q to the eyepiece 9 located on the lower side of the opening 15i contacts the eyepiece 9, and the contact surface 15q causes the eyepiece 9 to be attached to the upper part of the mount member 31 by utilizing the extension force of the spring 71. The eyepiece 9 is fixed by pressing against the eyepiece 9.

  In addition, the site | part and the contact surface 15q which the eyepiece 9 contacts in the upper part of the mount member 31 are formed in the shape along the eyepiece 9. FIG.

  Here, when the camera head 3 is connected to the endoscope 2 to perform endoscopic observation in the subject, the insertion unit 7, that is, the eyepiece 9 is used as the eyepiece 9 in order to change the observation field of view. It may be rotated while it is connected and fixed.

  However, since the mount member 31 is made of metal, there is little wear even when the eyepiece 9 is rotated. However, since the coupler portion 15 is made of resin, the contact surface 15q with which the eyepiece 9 contacts is rotated. There was a problem of wear.

  In view of such a problem, in this configuration, as shown in FIG. 12, in the coupler unit 15, the contact surface 15 q with which the eyepiece 9 contacts in the fixed state of the eyepiece 9 is formed in a curved shape.

  According to this, even when the eyepiece 9 having a curved shape rotates in a fixed state, the eyepiece 9 rotates smoothly while being in contact with the contact surface 15q having a curved shape, so that the contact surface 15q is worn. This can be reduced.

  14 is a partial enlarged cross-sectional view showing a configuration in which a protrusion is provided on the upper inner peripheral surface of the mount member in the coupler portion of FIG. 2, and FIG. 15 shows the shape of the fitting portion of the conventional mount member together with the coupler portion. FIG. 16 is an enlarged perspective view, and FIG. 16 is an enlarged perspective view showing the shape of the fitting portion of the mount member of FIG. 14 together with the coupler portion.

  By the way, it is preferable that the fitting portion 31 w of the eyepiece 9 of the mount member 31 in the coupler portion 15 is formed to have the same diameter as the diameter of the eyepiece 9. Further, when the outer shape of the eyepiece 9 has a circular shape, it is preferable that the outer shape of the insertion portion 31w is also formed in a circular shape as shown in FIG.

  Here, in a state where the eyepiece 9 is connected to the coupler unit 15, the eyepiece 9 is rotated, or the tip of the insertion unit 7 comes into contact with the subject with respect to the insertion unit 7 of the endoscope 2. When the force that is squeezed is applied, the eyepiece 9 is tilted (broken) with respect to the coupler portion 15, that is, the insertion portion 31 w, and the wiring or the like is reflected on the image sensor 33 due to irregular reflection or the like generated accordingly. There was a problem that it was crowded.

  Therefore, as shown in FIG. 14, in this configuration, a protrusion 75 protruding downward in the height direction M is formed on the distal end side of the upper inner peripheral surface 31 n of the mount member 31.

  Further, if the protrusion 75 is formed on the upper inner peripheral surface 31n, the protrusion 75 becomes an obstacle when the insertion portion 31w has the same diameter as the eyepiece 9, and the eyepiece 9 should not be easily inserted into the insertion portion 31w.

  Therefore, in this configuration, as shown in FIG. 14, the diameter of the fitting portion 31 w is larger than the diameter of the eyepiece 9 so that the eyepiece 9 can be easily inserted obliquely into the fitting portion 31 w while avoiding the protrusion 75. Only large is formed.

  From this, the external shape of the insertion part 31w is formed in the substantially elliptical shape elongated in the height direction M rather than FIG. 15, as shown in FIG.

  According to such a configuration, in a state where the eyepiece 9 is connected to the coupler unit 15, the eyepiece 9 is rotated, or the distal end of the insertion unit 7 is the subject with respect to the insertion unit 7 of the endoscope 2. Even if a force that is squeezed by contact or the like is applied, the projection 75 comes into contact with the distal end side of the eyepiece 9, so that the eyepiece 9 does not tilt, and the eyepiece 9 moves from the fitting portion 31w. It will not come off. In other words, the protrusion 75 functions as a breaker for the eyepiece 9.

  17 is a partial cross-sectional view of the camera head showing a state in which the rear screw is removed from the spacer ring of FIG. 2, FIG. 18 is a partial perspective view of the rear cover of FIG. 17 viewed from the XVIII direction in FIG. 17, and FIG. It is a fragmentary sectional view of the rear cover which follows the XIX-XIX line in FIG.

  By the way, as described above, a male screw is formed on the outer circumferential surface of the spacer ring 179, and the rear screw 50 is engaged with the female screw of the rear screw 50, as shown in FIG. Is advanced in the direction P, and by pressing the proximal end of the rear cover 17b with which the rear screw 50 abuts in the direction P, the force in the direction P is converted into a force in the direction Q parallel to the insertion direction S due to the shape of the rear cover 17b. Then, the front end of the rear cover 17b contacts the front end of the front cover 17a with an urging force in the insertion direction S while the packing 18 is crushed forward in the insertion direction S.

  As a result, the rear cover 17b is assembled to the front cover 17a. However, the spacer ring 179 is inclined with respect to the base end of the rear cover 17b in the base end of the rear cover 17b. If the female screw of the rear screw 50 is screwed into the male screw, the direction in which the rear screw 50 presses the proximal end of the rear cover 17b is inclined from the direction P. For this reason, the direction of the force that presses the base end of the front cover 17a with the tip of the rear cover 17b is also different depending on the circumferential direction of the exterior portion 17, so that the packing 18 is not uniformly crushed in the circumferential direction of the exterior portion 17. As a result, there is a problem that sufficient watertightness between the base end of the front cover 17a and the front end of the rear cover 17b cannot be secured.

  Therefore, it is necessary to arrange the spacer ring 179 in parallel with the base end of the rear cover 17b.

  In view of such circumstances, in this configuration, as shown in FIGS. 2 and 17 to 19, on the lower side in the height direction M on the inner peripheral surface of the base end of the rear cover 17 b, on the base end of the rear cover 17 b. On the other hand, for example, two protrusions 75 are provided for positioning the cable connector 41 in parallel.

  Specifically, the protrusion 75 pushes the cable connector 41 upward in the height direction M, thereby positioning the cable connector 41 parallel to the base end of the rear cover 17b.

  According to this, since the spacer ring 179 fixed to the base end of the cable connector 41 is also positioned in parallel to the base end of the rear cover 17b, the female screw of the rear screw 50 is set to the male screw of the spacer ring 179. Can be fixed straight in direction P.

  Therefore, the force that presses the base end of the rear cover 17b with the rear screw 50 in the direction P is reliably converted into the force that moves the front end of the rear cover 17b forward in the direction Q. Since the cover 17 is uniformly crushed in the circumferential direction, the watertightness between the base end of the front cover 17a and the front end of the rear cover 17b can be reliably ensured.

  20 is a perspective view showing the imaging unit of FIG. 2, FIG. 21 is a perspective view of the imaging unit of FIG. 20 viewed from a direction different from FIG. 20, and FIG. 22 is taken along the line IIXII-IIXII in FIG. It is sectional drawing which shows an imaging unit with a rear case.

  As described above, the imaging unit 100 is provided in the airtight case 16 (see FIG. 2). However, the imaging element 33 constituting the imaging unit 100 generates heat as it is driven.

  However, since the image pickup device 33 is provided in the airtight case 16, the atmosphere in the airtight case 16 is heated by the heat from the image pickup device 33 as a result of driving, and as a result, the image pickup device 33 exceeds the guaranteed operating temperature. In some cases, it was also heated. Therefore, a configuration that can appropriately dissipate the heat of the image sensor 33 has been desired.

  Therefore, in this configuration, with respect to the base end of the lens frame 51 made of metal, as shown in FIGS. 20 to 22, the front side of the image sensor 33, the bottom surface side in the height direction M, and the width direction N. The shape viewed from the side in the width direction N is partially L-shaped so as to partially cover both sides of the metal, and the shape viewed from above in the height direction M is an upward U-shaped metal. The constructed first heat radiation plate 78 is fixed. Further, at the base end of the first heat radiating plate 78, a height direction that partially covers the bottom surface side in the height direction M and the both side portions in the width direction N of the first substrate 35 and the second substrate 38. A shape viewed in plan from above M has a configuration in which a second heat radiating plate 79 made of an upward U-shaped metal is connected.

  Note that the prism frame 143 that holds the prism 43 and the image sensor substrate 32 are fixed to the fixed frame 80 as shown in FIGS. 20 and 21 provided in the airtight case 16 as described above. However, the second heat radiating plate 79 is fixed to the fixed frame 80.

  Further, the plurality of finger portions 79f formed on the proximal end side of the second heat radiating plate 79 are in contact with the rear case 16b as shown in FIG.

  According to such a configuration, the heat of the image sensor 33 is transmitted to the second heat radiating plate 79 via the fixed frame 80, and then the rear case 16 b and the first heat radiating that come into contact with the second heat radiating plate 79. It is transmitted to the plate 78 and then transmitted to the lens frame 51 that contacts the first heat radiating plate 78.

  That is, since the heat radiating area is increased, heat can be radiated uniformly over a wide range, so that the heat radiating property of the image sensor 33 can be improved.

  23 is a partial perspective view showing the front end side of the front cover of FIG. 2 excluding the ring, and FIG. 24 is a partial perspective view showing a state where the ring is mounted in the groove on the front end side of the front cover of FIG. 25 is a sectional view of the front cover taken along the line IIXV-IIXV in FIG. 24, and FIG. 26 is a perspective view showing the ring of FIG.

  Incidentally, as shown in FIG. 24, in order to improve the appearance of the camera head 3 on the distal end side of the front cover 17a and on the proximal end side with respect to the distal end 17ak to which the mount member 31 of the coupler portion 15 is connected, for example, a company name or the like. A ring 84 on which a character 87 or the like is written may be attached. The ring 84 constitutes a part of the exterior portion 17 after being mounted.

  As shown in FIGS. 23 and 25, the ring 84 is attached by being fitted into a groove 82 formed along the circumferential direction on the outer periphery on the front end side of the front cover 17a.

  However, when the ring 84 is fixed to the front end side of the front cover 17a with a screw or the like, there is a problem that the ring 84 is increased in size and the cleaning property at the fixing portion of the ring 84 is poor.

  Therefore, in this configuration, as shown in FIGS. 25 and 26, the inner peripheral surface of the ring 84 is formed with a claw portion 84t that fits into the groove 82 over the entire circumference in the circumferential direction. The ring 84 is fixed to the outer periphery of the front end side of the front cover 17a by fitting the claw portion 84t into the groove 82.

  The claw portion 84t has a radially inner diameter that is substantially the same as the radially outer diameter of the groove 82. That is, after the ring 84 is mounted, the ring 84 does not come out of the groove 82 radially outward.

  Further, as shown in FIG. 25, the claw portion 84t has an inclined surface 84k formed on the base end side. According to this, when the ring is mounted from the front with respect to the front end side of the front cover 17a, the inclined surface 84k moves while sliding with respect to the front end side of the front cover 17a to be contacted. It can be easily fitted into the groove 82.

  Further, after the claw portion 84t of the ring 84 is fitted in the groove 82, the claw portion 84t is hooked on the groove 82, so that the ring 84 is not detached from the groove 82 even if the ring 84 is pulled forward.

  According to this, the ring 84 can be prevented from falling off with a simple configuration, the assembly variation of the ring 84 can be prevented, the enlargement of the exterior portion 17 can be prevented, and a screw or the like can be used for fixing. Therefore, it is possible to improve the cleaning performance at the ring 84 mounting site.

  27 is a partial perspective view showing the base end side of the rear cover of FIG. 2, FIG. 28 is a partial perspective view showing a state where the ring and the rear screw are removed from the base end side of the rear cover of FIG. 27, and FIG. It is a perspective view which shows the ring of FIG.

  As shown in FIG. 27, a ring 88 for improving the appearance of the camera head 3 may be attached to the base end side of the rear cover 17b.

  Specifically, as shown in FIG. 28, a key groove 91 is formed in the base end of the rear cover 17b along the circumferential direction, and a ring 88 is fitted into the key groove 91, whereby the rear cover 17b A ring 88 is attached and fixed to the proximal end side.

  As shown in FIGS. 27 and 28, on the upper outer peripheral surface of the ring 88 in the height direction M, for example, a character 89 such as “autoclavable” is written. Therefore, in order for the user to recognize the character 89, it is necessary to prevent the ring 88 from rotating after being attached.

  Therefore, in this configuration, as shown in FIGS. 27 and 28, the key groove 91 is provided with a convex portion 90 having a semicircular shape in plan view, for example, and as shown in FIGS. In addition, a concave notch 88k having a semicircular shape in plan view that can be fitted to the convex portion 90 is provided.

  According to this, when the ring 88 is fitted to the key groove 91, the notch 88 is also fitted to the convex portion 90, so that the ring 88 rotates with the ring 88 fitted to the key groove 91. Can be prevented. That is, the ring 88 and the character 89 can be easily positioned.

  FIG. 30 is a perspective view of a camera head showing the shape of a conventional coupler unit.

  As described above, the coupler unit 15 is shown to be movable up and down in the height direction M with respect to the mount member 31. In addition, when the eyepiece 9 of the endoscope 2 is connected to the coupler unit 15, the coupler unit 15 is shown to be pushed down in the height direction M.

  Here, when the coupler unit 15 is pushed down, the operator should normally perform an operation of pushing down the coupler unit 15 by pushing down the upper surface of the coupler unit 15 with a finger or the like. At this time, as shown in FIG. 30, if the upper surface of the coupler unit 15 has a flat shape or has a concave shape so that it can be easily pressed by a finger, When the upper surface of 15 is pushed down, the finger comes into contact with the switch button 19 provided on the upper surface of the exterior portion 17, which makes it difficult to perform the pressing operation.

  Therefore, in this configuration, as shown in FIGS. 11 and 13, the upper surface 15 of the coupler unit 15 is larger than the switch button 19 in the height direction M, specifically, the height direction of the coupler unit 15. A protrusion 15t that protrudes larger than the downward movement amount of M is provided. Note that the upper surface of the protrusion 15t may be formed in a recessed shape so that the pressing operation can be easily performed.

  According to such a configuration, if the operator performs a pressing operation on the protrusion 15t using a finger, the finger does not come into contact with the switch button 19; Can be improved.

  FIG. 31 is a perspective view showing a configuration of a connection member to which an endoscope in a conventional camera head is connected, FIG. 32 is a perspective view showing a configuration of a modified example of the connection member of the camera head of this configuration, and FIG. FIG. 33 is a cross-sectional view of the camera head taken along line IIIXIII-IIIXIII in FIG. 32.

  In the present embodiment described above, it has been shown that the eyepiece 9 of the endoscope 2 can be connected to the coupler 15 of the camera head 3 with respect to the camera head 3.

  Not limited to this, the coupler 15 is removed from the front end 17ak of the front cover 17a, and a cylindrical connecting member 92 is connected instead as shown in FIG. 31, and the endoscope 2 is directly connected to the connecting member 92. The base end of the holding part 8 from which the eyepiece 9 is removed may be connected. The connection structure of the proximal end of the grip portion 8 to the connection member 92 is the same as the configuration shown in FIG.

  Briefly, the connection configuration shown in FIG. 20 will be described. When connecting and fixing the proximal end of the gripping portion 8 to the connection member 92, for example, the connection member 92 is pushed backward with the left hand, and the gripping portion 8 is pressed with the right hand. When the proximal end is pushed into the connecting member 92 and then the left hand is moved away from the connecting member 92, the connecting member 92 moves forward by the extension of the spring, and the locking pin in the connecting member 92 moves to the proximal end side of the gripping portion 8. The base end side of the grip portion 8 is fixed to the connection member 92 by being fitted into a recess formed on the outer peripheral surface of the connection member 92.

  Further, when removing the proximal end side of the gripping portion 8 from the inside of the connection member 92, again against the extension force of the spring, push the connection member 92 backward with the left hand to remove the locking pin from the recess, By pulling the proximal end side of the gripping portion 8 forward with the right hand, the proximal end side of the gripping portion 8 is removed from the connection member 92.

  However, when attaching or detaching the gripping portion 8 to the proximal end side, for example, when the connecting member 92 is pushed backward against the extension force of the spring with the left hand, the outer peripheral surface of the connecting member 92 is slippery. There was a problem that it was difficult to push in.

  Therefore, as shown in FIG. 32, in this configuration, an outward flange 92 t extending in the vertical direction in the height direction M is provided on the outer peripheral surface of the connection member 92. According to this, if the operator pushes the collar portion 92t backward with, for example, the left hand, the connecting member 92 moves backward, so that the pushing operation of the connecting member 92 is facilitated.

Hereinafter, the configuration of the connection member 92 will be briefly described with reference to FIG.
As shown in FIG. 33, the connection member 92 has a mounting portion main body 94 in which the base end side of the gripping portion 8 is fixed inside, and the base end 94e of the mounting portion main body 94 is the front end of the front cover 17a. It is fixed to the inner circumference of 17ak.

  In addition, the attachment body 94 is formed with two through holes 94k along the height direction M at positions facing the height direction M, and a locking pin 95 is provided in each of the through holes 94k. The locking pin 95 is inserted and is movable up and down in the height direction M. Note that the locking pin 95 is prevented from being entirely pulled out to the inside of the mounting portion main body 94 by the stopper formed in the head portion 95h.

  Further, a fitting member 98 is covered on the outer periphery of the attachment portion main body 94. The fitting member 98 is connected to the stepped portion 94d formed on the proximal end side of the mounting portion main body 94 at the distal end of an extension spring 133 extending in the insertion direction S in which the proximal end is connected. It can be moved back and forth.

  In addition, a base end side of an exterior member 93 that is an exterior of the connection member 92 is connected to the outer periphery of the fitting member 98 by screws. Note that the above-described flange portion 92 t is formed on the exterior member 93.

  In addition, since the exterior member 93 is fixed to the fitting member 98, the exterior member 93 can be moved back and forth in the insertion direction S together with the fitting member 98.

  Furthermore, an inclined surface 98 t with which the head portion 95 h of the locking pin 95 contacts is formed on the inner peripheral surface at the tip of the fitting member 98.

  When the head portion 95h of the locking pin 95 is in contact with the inclined surface 98t, the extension spring 133 is in a natural length state, and the bottom portion 95u opposite to the head portion 95h of the locking pin 95 has a through hole 94k. Through the mounting portion main body 94.

  When the exterior member 93 is pushed backward against the urging force of the extension spring 133, the head portion 95h of the locking pin 95 slides on the inclined surface 98t and is positioned forward of the inclined surface 98t. That is, the head portion 95h of the locking pin 95 is not in contact with the inclined surface 98t. In this state, the bottom portion 95u of the locking pin 95 protrudes from the inside of the attachment portion main body 94 to the outside in the through hole 94k.

  Therefore, on the other hand, when the base end side of the gripping portion 8 is attached to or detached from the connection member 92, if the exterior member 93 is pushed backward using the flange portion 92 t, the locking pin 95 is attached to the attachment portion main body 94. Since it retracts from the inside into the through hole 94k, the base end side of the gripping portion 8 can be freely inserted into and removed from the mounting portion main body 94.

  On the other hand, when the proximal end side of the gripping portion 8 is fixed to the connection member 92, the exterior member 93 and the fitting member 98 are moved forward by the extension spring 133 by stopping the pushing of the exterior member 93. When the head portion 95h of the locking pin 95 comes into contact with the inclined surface 98t, the bottom portion 95u of the locking pin 95 protrudes into the mounting portion main body 94 through the through hole 94k, and the bottom portion 95u is the base of the gripping portion 8. The proximal end side of the gripping portion 8 is fixed to the connection member 92 because it fits into the recess formed in the outer peripheral surface on the end side.

  FIG. 34 is an enlarged perspective view showing a state in which the rigid portion of the second substrate is fixed to the fixed frame of FIG.

  By the way, the second substrate 38 is shown to be fixed to the fixed frame 80 as described above. Specifically, as shown in FIG. 34, the rigid portion 38 a of the second substrate 38 is screwed to the base end surface of the fixed frame 80.

  Here, conventionally, the rigid portion 38a is fixed to the base end surface of the fixed frame 80 by fixing the four corners of the rigid portion 38a with screws to the four corners of the base end surface of the fixed frame 80. However, a configuration that can be fixed more easily has been desired.

  Therefore, in this configuration, the two fixed frames 80 facing each other in the width direction N project in a L shape from the bottom in the height direction on the base end side and protrude rearward from the base end surface of the fixed frame 80, and projecting ends. However, the arm part 80k bent inward along the direction N so that it may mutually oppose in the width direction N is provided.

  In the two arm portions 80k, in the rigid portion 38a of the second substrate 38, the width in the width direction N of the rigid portion 38a and the flexible portion 38c is different at the boundary between the rigid portion 38a and the flexible portion 38c. The step portion 38ad formed by is locked. As a result, the position of the rigid portion 38a in the height direction M is defined.

  Further, in this locked state, the two arm portions 80k are positioned to face the non-fixed surface 38af of the rigid portion 38a. In addition, the position of the boundary between the rigid portion 38a and the flexible portion 38c abuts against the two arm portions 80k, and the position of the rigid portion 38a may be shifted in the width direction N. No.

  That is, the peripheral portion of the step portion 38ad in the rigid portion 38a is locked with the positions in the height direction M, the width direction N, and the insertion direction S defined by the two arm portions 80k.

  Therefore, when the rigid portion 38a is fixed to the base end surface of the fixed frame 80, the rigid portion 38a only needs to be fixed with the screws 99 at the two corners only on the upper side in the height direction M. The fixing structure of the rigid portion 38a is simplified.

  Further, since the positions of the rigid portion 38a in the height direction M and the width direction N are defined by the contact of the rigid portion 38a with the arm portion 80k, the rigid through which the screw 99 passes through the screw hole of the fixed frame 80. The position of the hole formed in the portion 38 can be easily and accurately defined.

2. Endoscope 3. Camera head (imaging device)
16 ... Airtight case (case member)
17 ... Exterior part (exterior member)
DESCRIPTION OF SYMBOLS 20 ... Substrate fixing member 20a ... Fixed part 20b ... Substrate pushing-down part 20c ... Storage part 22 ... Substrate 22a ... First part 22ac ... First part fixed surface 22at ... First part upper surface (non-fixed surface)
22b ... second part 22bj ... mounting surface 52 ... wall 52t ... top of wall 58 ... first through hole 59 ... second through hole 60 ... edge 60t ... bottom of edge 61 ... liquid sealing material (Mounting member)
DESCRIPTION OF SYMBOLS 100 ... Imaging unit 151 ... Electronic component (mounting member)
A ... Mounting area K ... Space S ... Insertion direction (extension direction)

Claims (11)

A substrate having a first portion and a second portion extending from the first portion and having a mounting member provided on a mounting surface of a mounting area in the second portion, and the substrate being fixed An imaging apparatus comprising a substrate fixing member,
The substrate fixing member is
A fixing portion to which the first portion of the substrate is fixed;
The non-fixing of the mounting surface of the mounting area is performed by pushing the second part lower than the non-fixing surface opposite to the fixing surface of the first part to the fixing part and bending the second part into a crank shape. A substrate push-down portion that is positioned lower than the surface and fixes the position of the second portion;
A housing part that houses the mounting member provided on the mounting surface of the mounting area and is provided with a wall portion that surrounds the mounting area in a plan view.
Have
The top part of the said wall part is higher than the said mounting member, and is located in the height below the said non-fixed surface of a said 1st site | part, The imaging device characterized by the above-mentioned.   The imaging apparatus according to claim 1, wherein at least the second part of the substrate is configured by a flexible substrate. The substrate push-down portion is formed in the substrate fixing member by the first through hole formed in the substrate fixing member adjacent to the fixing portion in the extending direction of the substrate, and the first through hole. And is composed of an edge of the first through hole,
When the second portion of the substrate is penetrated through the first through hole, the second surface portion contacts the bottom portion of the edge portion of the substrate fixing member, thereby the second portion. The imaging apparatus according to claim 2, wherein the position of the second part is fixed while the part is pushed down.   The imaging apparatus according to claim 3, wherein the mounting surface of the second portion of the substrate contacts the bottom portion of the edge portion with an elastic force. The storage portion includes a second through hole formed in the substrate fixing member adjacent to the first through hole via the edge portion in the extending direction of the substrate, and the second through hole. The wall portion is formed on the substrate fixing member,
5. The imaging apparatus according to claim 3, wherein the mounting surface of the second part is in contact with the bottom of the wall portion in the storage portion.   The imaging device according to claim 1, wherein the mounting member is an electronic component mounted on the substrate. The mounting member is a liquid sealing material that further improves the mounting strength of the electronic component to the mounting area and protects the electronic component.
The imaging device according to claim 6, wherein the storage portion constitutes a space to which the liquid sealing material is applied.   The imaging apparatus according to claim 1, wherein the substrate fixing member is fixed to a case member that seals the imaging unit therein.   The imaging apparatus according to claim 8, further comprising an exterior member that is fixed to the case member and includes the substrate fixing member to which the substrate is fixed.   The imaging device according to claim 1, wherein the second part of the substrate is formed to be narrower than the first part. An endoscope, wherein the imaging device according to any one of claims 1 to 10 is connectable.

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