TWI796956B - Metal shell packaging combination of internal components of endoscope - Google Patents

Abstract

A metal shell packaging combination of internal components of an endoscope is used to be installed in a head tube of an endoscope, mainly comprising: a rigid circuit board; a light source lens group, combined with the rigid circuit board to form a body; A flexible circuit board, having a connection surface attached to the bottom surface of the rigid circuit board; a cable, having a plurality of wires, connected to the flexible circuit board; a metal shell, surrounded by a tubular shape with open ends, the metal shell Surrounding the part of the light source lens group, the hard circuit board, the flexible circuit board and the plurality of wires; a curing glue, at least located in the range enclosed by the metal shell, and covering the part of the light source lens group, the hard circuit board The circuit board, the flexible circuit board, and the plurality of wires together form an integral component.

Description

Metal shell packaging combination of internal components of endoscope

The invention is related to the component packaging technology of the endoscope, in particular to a metal shell package combination of the internal components of the endoscope.

my country's invention patent No. I730621 discloses an image sensor package and an endoscope. In this case, an image sensor, a light-emitting element, and a package are arranged on a base, and the bottom of the base can be set The conductive contacts are used to electrically connect with other adapters or conductive connectors, and this case also discloses in Figure 7 that a protective colloid can be provided at the bottom of the base to wrap the conductive contacts and wires of the adapter overwhelm and protect.

The image sensor and light-emitting element of the aforementioned known technology are all arranged on the top surface of the base, but it is similar to the arrangement method of COB (Chip On Board, chip direct packaging) process. In this arrangement method, the image sensor The lens group can no longer be placed on top, so its optical properties are limited. In addition, in such a small space inside the endoscope, even if the protective colloid is installed, it is still small overall, and it is still possible to cause damage due to inadvertent operation by personnel during assembly, and it is also difficult to install when applying the clamp. question.

The main purpose of the present invention is to provide a metal shell packaging assembly for the internal components of the endoscope, which can be provided with a metal shell outside the curing glue, which can not only protect the entire assembly after assembly, but also facilitate the application of fixtures.

Another object of the present invention is to provide a metal shell packaging assembly for internal components of an endoscope, which can make the assembled whole assembly have a waterproof function after the metal shell is installed.

In order to achieve the above object, the present invention proposes a metal shell packaging combination of internal components of an endoscope, which is used to be installed in a head tube of an endoscope. The metal shell packaging combination of internal components of the endoscope includes: a hard circuit plate; a light source lens group, which has an imaging unit and a plurality of light sources, the imaging unit is composed of an imaging device and a lens group arranged above the imaging device, the imaging unit is elongated and uses the The bottom of the imaging device is arranged on the top surface of the rigid circuit board and is electrically connected to the rigid circuit board. The plurality of light sources are arranged on the top surface of at least one high platform, and the at least one high platform is located on the side of the imaging unit, and The bottom surface is set on the top surface of the rigid circuit board and the plurality of light sources are electrically connected to the rigid circuit board, and the plurality of light sources are combined with the rigid circuit board by the at least one high platform and the imaging unit to form a body together ; a flexible circuit board, with a connecting surface attached to the bottom surface of the rigid circuit board and electrically connected to the rigid circuit board, the flexible circuit board has a plurality of connecting conductive contacts; a cable, with a plurality of wires, and a The outer covering layer covers the plurality of electric wires, and the plurality of electric wires extend outward from one end of the cable to protrude from the outer covering layer, each of the electric wires has a metal core, and is connected to the flexible circuit by its metal core The plurality of conductive contacts on the board; a metal shell, which is formed into a tube shape with open ends, and the metal shell surrounds the part of the light source lens group, the rigid circuit board, the flexible circuit board and the plurality of electric wires; a solidified Glue, located at least in the range enclosed by the metal shell, and between the rigid circuit board, the flexible circuit board, the plurality of wires and the metal shell, and covering part of the light source lens group, the rigid circuit board , the flexible circuit board, and the plurality of electric wires together form an integral component.

Based on the above technical content, the present invention sets a metal shell outside the curing glue, which can not only protect the overall combination after assembly, but also facilitate the application of fixtures. In addition, the present invention can make the assembled whole combination have a waterproof function after the metal shell is provided.

10: Metal shell packaging combination of internal components of the endoscope

11: Rigid circuit board

21: Light source lens group

22: Image acquisition unit

221: Imaging device

222: Lens group

24: light source

241: high platform

27: colloid

29: block

31: Flexible printed circuit board

32: connection surface

34: Conductive contact

41: cable

42: wire

43: metal core

44: Outer coating layer

51: metal shell

52: Gap

61: curing glue

69: Integrated components

91: Head tube

10': Metal shell packaging combination of internal components of the endoscope

31': Flexible circuit board

34': Conductive contacts

41': cable

42': wire

43': metal core

44': Outer coating

49': Casing

51': metal shell

61': curing glue

Fig. 1 is a perspective view of the first preferred embodiment of the present invention.

Fig. 2 is an exploded view of some components of the first preferred embodiment of the present invention, showing the state of removing the metal shell.

Fig. 3 is an exploded view of the first preferred embodiment of the present invention.

Fig. 4 is a schematic perspective view of the first preferred embodiment of the present invention, showing the internal assembly state after removing the metal shell.

Fig. 5 is a schematic cross-sectional view of the first preferred embodiment of the present invention.

Fig. 6 is an installation diagram of the first preferred embodiment of the present invention.

Fig. 7 is a schematic perspective view of the second preferred embodiment of the present invention, showing the internal assembly state after removing the metal shell.

Fig. 8 is a schematic cross-sectional view of the first preferred embodiment of the present invention.

In order to describe the technical features of the present invention in detail, hereby give the following preferred embodiments and describe them in conjunction with the drawings as follows, wherein: as shown in Figures 1 to 6, the present invention proposes a first preferred embodiment to illustrate a The metal shell packaging assembly 10 of the internal components of the mirror is used to be installed in a head pipe 91 of an endoscope (not shown in the figure), and the metal shell packaging assembly 10 of the internal components of the endoscope is mainly composed of a rigid circuit board 11 , light source lens Group 21, a flexible circuit board 31, a cable 41, a metal shell 51 and a curing glue 61, wherein: the light source lens group 21 has an imaging unit 22 and a plurality of light sources 24, the imaging unit 22 consists of An image-taking device 221 and a lens group 222 arranged on the top of the image-taking device 221 are formed. Since the lens group 222 is a conventional component, it is only represented by simple lines in the drawings. The image-taking unit 22 is The bottom of the imaging device 221 is elongated and is arranged on the top surface of the rigid circuit board 11 and is electrically connected to the rigid circuit board 11. The plurality of light sources 24 can be selected from LED chips, and are arranged on the top surface of the two high platforms 241. The two high platforms 241 are located on the two sides of the imaging unit 22, and are arranged on the top surface of the rigid circuit board 11 with the bottom surface, and the plurality of light sources 24 are electrically connected to the rigid circuit board 11, and the plurality of light sources 24 are borrowed The two high platforms 241 and the imaging unit 22 are combined with the rigid circuit board 11 and fixed with a colloid 27 to form a block 29. This block 29 can be picked up and assembled as a whole, which can facilitate subsequent contact with Assembly of other components.

The flexible circuit board 31 has a connection surface 32 attached to the bottom surface of the rigid circuit board 11 and is electrically connected to the rigid circuit board 11 . The flexible circuit board 31 has a plurality of connecting conductive contacts 34 .

The cable 41 has a plurality of wires 42 inside and an outer sheath 44 covering the plurality of wires 42. The plurality of wires 42 are thick and thin, extending outward from one end of the cable 41 and extending out of the outer sheath. The covering layer 44 , each of the wires 42 has a metal core 43 , and the metal core 43 is respectively connected to the plurality of conductive contacts 34 on the flexible circuit board 31 .

The metal shell 51 is formed into a tubular shape with open ends. The metal shell 51 surrounds the light source lens group 21 , the rigid circuit board 11 , the flexible circuit board 31 and the plurality of wires 42 . In the first embodiment, the cross-sectional shape of the metal shell 51 surrounded by a tubular shape can be selected as a rectangle, where the rectangular cross-section can provide two flat and parallel opposite sides, thereby providing a convenient clamping position. effect, thereby improving the convenience of assembly. In addition, the metal shell 51 can choose a structure without gaps in the tubular peripheral wall as required, but in this first embodiment, the metal shell 51 is selected to be surrounded by a single piece into a tubular shape, and has a gap 52. This gap 52 can be selected It is located in the middle of one side of the rectangle on the section, and the gap 52 can be mainly used to absorb the expansion or contraction during glue pouring.

The curing glue 61 is located in the range enclosed by the metal shell 51, and is located between the rigid circuit board 11, the flexible circuit board 31, the plurality of electric wires 42 and the metal shell 51, and covers the light source lens group 21 , the rigid circuit board 11 , the flexible circuit board 31 , and the plurality of electric wires 42 form an integrated component 69 as a whole. In this first embodiment, the cured glue 61 extends downward for a certain length from the bottom of the metal shell 51 and covers part of the outer covering layer 44 of the cable 41, and the cured glue 61 is attached to The inner wall surface of the metal shell 51 . In actual operation, the cured glue 61 can be heated to melt first, and then poured into the metal shell 51 to be cooled and solidified. Or, it can be glued multiple times and bonded with multiple pieces of glue. In this way of gluing in stages, when the light source lens group 21 is combined with the rigid circuit board 11, it can be glued and fixed first, and then glued to the flexible circuit board 11. When the circuit board 31 is combined with the rigid circuit board 11, it is glued and fixed again. In addition, the position where the plurality of electric wires 42 are connected to the flexible circuit board 31 can be glued and fixed, and then integrally glued and fixed, and these The colloids glued in stages are bonded together to form the cured glue 61 . Since it is difficult to show the bonding state of multiple colloids that are glued step by step, it is only shown as the integral solidified glue 61 in the drawing of this case.

The structure of the first embodiment has been described above, and the assembled state and the achieved effects of the first embodiment will be described next.

As shown in Figures 3 to 6, before pouring the curing glue 61, the hard circuit board 11, the light source lens group 21, the flexible circuit board 31 and the cable 41 are first combined, and the metal shell 51 Cover around the composition of the aforementioned components, and then pour the cured glue 61 into the metal shell 51, to be After the curing glue 61 is cured, the assembly is completed, and all the components are fixed together by the curing glue 61, that is, the aforementioned integrated component 69 is formed. This integrated component 69 can be easily assembled by the operator. In the head tube 91 of the endoscope (not shown). During the pouring process, if the metal shell 51 has the slit 52 , it can provide the effect of absorbing expansion or contraction. After the assembly is completed, the metal shell 51 of the integrated component 69 can provide protection for the curing glue 61 and all internal components, and when it is to be assembled into the endoscope, since the cross section of the metal shell 51 is rectangular , so it is also possible to apply the clamp (not shown in the figure) conveniently. In addition, since the metal shell 51 has been filled with glue, the integral component 69 can prevent water or moisture from entering the metal shell 51 , so as to protect the internal components from being damaged.

As shown in Figures 7 to 8, the present invention proposes a second preferred embodiment to illustrate a metal shell packaging combination 10' of internal components of an endoscope, which is basically the same as the first embodiment disclosed above, except that: The cable 41' further includes a sleeve 49', covering the part of the outer coating 44' of the cable 41' and the part of the plurality of wires 42', and the metal core 43' of the plurality of wires 42' is exposed Outside the sleeve 49', it can be connected to the plurality of conductive contacts 34' on the flexible circuit board 31'. In this embodiment, the sleeve 49' is a heat-shrinkable sleeve, which can be shrunk after heating to tighten the plurality of electric wires 42'.

The cured glue 61' extends downward for a predetermined length from the bottom of the metal shell 51' and covers a part of the casing 49'.

In this way, the curing glue 61' is not coated on the outer covering layer 44' of the cable 41' as in the aforementioned first embodiment, but after the casing 49' is set, the curing glue 61 'Then cover the casing 49'. Such a practice helps to allow a longer length of the plurality of electric wires 42' to be exposed to the outer covering layer 44' of the cable 41' before the sleeve 49' is set, so as to facilitate the operator to perform welding. Assembly motion do. After the assembly is completed, the sleeve 49' can be put on, and then the curing glue 61' is poured to complete the final assembly.

The rest of the structures and functions of the second embodiment are the same as those of the first embodiment disclosed above, and will not be repeated here.

10: Metal shell packaging combination of internal components of the endoscope

11: Rigid circuit board

21: Light source lens group

22: Image acquisition unit

221: Imaging device

222: Lens group

24: light source

241: high platform

27: colloid

29: block

31: Flexible printed circuit board

32: connection surface

41: cable

42: wire

43: metal core

44: Outer coating layer

51: metal shell

61: curing glue

69: Integrated components

Claims (10)

A metal shell packaging combination of internal components of an endoscope is used to be installed in a head tube of an endoscope. The metal shell packaging combination of internal components of the endoscope includes: a rigid circuit board; A light source lens group has an imaging unit and a plurality of light sources. The imaging unit is composed of an imaging device and a lens group arranged above the imaging device. The imaging unit is elongated and uses the imaging unit The bottom of the device is arranged on the top surface of the rigid circuit board and is electrically connected to the rigid circuit board. The plurality of light sources are arranged on the top surface of at least one high platform. The plurality of light sources are electrically connected to the rigid circuit board on the top surface of the rigid circuit board, and the plurality of light sources are combined with the rigid circuit board by the at least one high platform and the imaging unit together to form a body; A flexible circuit board, having a connection surface attached to the bottom surface of the rigid circuit board and electrically connected to the rigid circuit board, the flexible circuit board has a plurality of connecting conductive contacts; a cable having a plurality of wires and having an outer coating covering the plurality of wires, the plurality of wires extending outwardly from one end of the cable beyond the outer coating, each of the wires having a metal core, and respectively connected to the plurality of conductive contacts on the flexible circuit board with their metal cores; A metal shell, formed into a tubular shape with open ends, the metal shell surrounds the part of the light source lens group, the rigid circuit board, the flexible circuit board and the plurality of electric wires; A curing glue, located at least within the range enclosed by the metal shell, and between the rigid circuit board, the flexible circuit board, the plurality of wires and the metal shell, and covering part of the light source lens group, the rigid circuit board The circuit board, the flexible circuit board, and the plurality of wires together form an integral component. According to the metal shell packaging combination of internal components of the endoscope described in claim 1, wherein: the cross-sectional shape of the metal shell enclosing a tubular shape is rectangular. According to the metal shell encapsulation combination of internal components of the endoscope described in claim 1, wherein: the metal shell is surrounded by a piece of body to form a tubular shape, and has a gap. According to the metal shell packaging combination of the internal components of the endoscope described in claim 3, wherein: the cross-sectional shape of the metal shell enclosing a tubular shape is a rectangle, and the gap of the metal shell is located in the middle of one side of the rectangle . According to the metal shell packaging combination of the internal components of the endoscope described in claim 1, wherein: the cable further includes a sleeve, which is sleeved on the part of the outer covering layer of the cable and the part of the plurality of electric wires, and the plurality of The metal core of the electric wire is exposed outside the casing. According to the metal shell packaging combination of internal components of the endoscope described in claim 5, wherein: the sleeve is a heat shrinkable sleeve. According to the metal shell packaging combination of the internal components of the endoscope described in claim 5, wherein: the curing glue extends downward for a predetermined length from the bottom of the metal shell and covers a part of the casing. According to the metal shell encapsulation combination of internal components of the endoscope according to claim 1, wherein: the curing glue extends downward for a predetermined length from the bottom end of the metal shell and covers a part of the outer covering layer of the cable. According to the metal shell packaging combination of internal components of the endoscope described in claim 1, wherein: the cured glue is attached to the inner wall of the metal shell. According to the metal shell packaging combination of the internal components of the endoscope described in claim 1, wherein: the curing glue is formed by bonding multiple pieces of glue.

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