CN113892895A

CN113892895A - PCB fixing sleeve and capsule endoscope using same

Info

Publication number: CN113892895A
Application number: CN202111237686.2A
Authority: CN
Inventors: 李文魁; 宁浩; 彭国会
Original assignee: Shenzhen Jifu Medical Technology Co ltd
Current assignee: Shenzhen Jifu Medical Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-01-07

Abstract

The invention provides a PCB fixing sleeve, wherein a FPC flexible flat cable of the PCB fixing sleeve is connected with a first PCB and a second PCB, the first PCB is fixed with a first opening end through a first elastic buckle, the second PCB is fixed with a second opening end through a first positioning column, the first opening end and the second opening end of the PCB fixing sleeve form a longitudinally extending avoidance plane, and a spacer is further arranged inside the PCB fixing sleeve. According to the PCB fixing sleeve, the first PCB and the second PCB are fixed at two ends of the PCB fixing sleeve by utilizing the buckles or/and the positioning columns, and meanwhile, the spacers are arranged inside the PCB fixing sleeve, so that a first containing space and a second containing space for assembling the capsule battery and the permanent magnet are formed, the first containing space and the second containing space are relatively independent closed spaces, the battery and the permanent magnet are separated by the spacers, no interference or short circuit risk exists, the structure is simple, the assembling process is convenient, the step of frequently using glue is reduced, and the production efficiency is improved.

Description

PCB fixing sleeve and capsule endoscope using same

Technical Field

The invention relates to the field of capsule endoscopes, in particular to a PCB (printed circuit board) fixing sleeve and a capsule endoscope using the same.

Background

As a novel alimentary canal physical examination scheme, the capsule endoscope is gradually accepted by the public, the capsule endoscope is required to be small and exquisite in size for swallowing conveniently, functional elements such as a camera shooting unit, an illuminating unit, an image processing unit, a permanent magnet, a signal transmission unit and a control unit are required to be integrated in the inner space of the capsule endoscope, part of the functional elements are required to be fixed on the surface of a PCB (printed circuit board), the structure of the capsule endoscope is very complex, and the difficulty of an assembly process is high.

Chinese patent CN211093932U discloses a capsule core and a capsule endoscope, which are characterized in that adjacent PCB boards are connected by a connecting structure, and functional units thereof are fixed on the PCB boards or the connecting structure, so that the capsule core is integrated and then fixed with a shell, a connecting structure is required between every two adjacent PCB boards, which is high in production cost and complex in assembly, on the other hand, the capsule core frequently uses adhesive during assembly, the assembly process is complex, the amount of the adhesive is difficult to control, the production efficiency is low, the adhesive may be difficult to use during assembly, and the adhesive may drip and/or may spread to forbidden areas of the PCB boards and reach areas where it may cause damage (e.g., cause cutting between electrical components on the PCB).

In view of the above problems encountered in the manufacturing process of the capsule endoscope, it is necessary to develop a novel assembly process, which simplifies the manufacturing process, reduces the design and production costs, and improves the product yield and competitiveness.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a PCB fixing sleeve and a capsule endoscope using the same.

In a first aspect: the invention provides a PCB fixing sleeve, which comprises a capsule endoscope, wherein the PCB fixing sleeve comprises a FPC (flexible printed circuit), a first PCB and a second PCB, the FPC is connected with the first PCB and the second PCB, a first opening end and a second opening end are arranged at two ends of the PCB fixing sleeve, the first PCB is fixed with the first opening end through a first elastic buckle, the second PCB is fixed with the second opening end through a first positioning column, a positive conducting strip and a negative conducting strip are further arranged on the surface of the first PCB, an avoiding plane extending longitudinally is formed at the first opening end and the second opening end of the PCB fixing sleeve, and a spacer positioned between the first opening end and the second opening end is further arranged in the PCB fixing sleeve.

Furthermore, an accommodating space is formed between the avoiding plane and the inner wall of the shell of the capsule endoscope, and the FPC flexible flat cable is located in the accommodating space.

Further, the PCB board fixing sleeve is made of any one of polypropylene, ABS, polycarbonate and polyimide.

Furthermore, the first elastic buckles are arranged along the circumferential direction of the first opening end of the PCB fixing sleeve, and the number of the first elastic buckles is at least two.

Further, the fastening surface of the first elastic buckle is a plane or an inclined surface.

Further, the outer diameter of the first PCB is larger than the inner diameter of the PCB fixing sleeve.

Furthermore, the first positioning columns are arranged along the circumferential direction of the second opening end of the PCB fixing sleeve, and the number of the first positioning columns is at least two.

Further, the outer diameter of the second PCB is larger than that of the PCB fixing sleeve.

Furthermore, the second open end of the PCB fixing sleeve is provided with a pressing position extending outwards, and the pressing position is used for fixing the PCB fixing sleeve.

Furthermore, the end part of the first positioning column at the second opening end of the PCB fixing sleeve is also provided with a limiting part, the limiting part is any one of a conical forced tripping or a column buckle, and the outer diameter of the limiting part is larger than the inner diameter of the positioning hole of the second PCB.

Further, PCB board fixed sleeve includes first support and second support, first support and second support are buckled through the second bullet and are constituteed PCB board fixed sleeve with the mutual lock of constant head tank.

In a second aspect, the invention provides a capsule endoscope, which comprises a lens assembly, a permanent magnet, a battery, a transparent front cover, a third PCB and a capsule shell, and is characterized by further comprising the PCB fixing sleeve of any one of the first aspect.

The PCB fixing sleeve and the capsule endoscope thereof have the advantages of simple structure and convenience in assembly.

Drawings

FIG. 1: the invention discloses an overall structure schematic diagram of a PCB fixing sleeve;

FIG. 2: the invention discloses a schematic view of a downward angle of a PCB fixing sleeve;

FIG. 3: the invention discloses a schematic view of a bottom view angle of a PCB fixing sleeve;

FIG. 4: the plane schematic diagram of the PCB board of the invention;

FIG. 5: the capsule endoscope of the invention has a schematic structure;

FIG. 6: the PCB fixing sleeve structure of the second embodiment of the invention is shown schematically;

FIG. 7: the PCB fixing sleeve structure of the third embodiment of the invention is shown schematically;

FIG. 8: the PCB fixing sleeve structure of the fourth embodiment of the invention is shown schematically;

FIG. 9: a first support diagram according to a fourth embodiment of the present invention;

FIG. 10: a second bracket according to a fourth embodiment of the invention is schematically illustrated.

Each serial number and corresponding name are respectively: the flexible printed circuit board comprises a first elastic buckle 101, a negative electrode conducting strip 102, a first PCB 103, a PCB fixing sleeve 104, a second PCB 105, a positive electrode conducting strip 106, an FPC flexible flat cable 107, a first positioning column 108, a spacer 109, an avoiding plane 110, a first end face 111, a second end face 112, a notch 113, a buckle face 114, a positioning hole 115, a clamping groove 116, a conducting pole piece mounting hole 117, a pressing position 118, a capsule shell 119, a second elastic buckle 120, a first support 121, a second support 122, a limiting part 123, a positioning groove 124, a lens component 201, a permanent magnet 202, a battery 203, a transparent front cover 204 and a third PCB 205.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples, it being understood that the specific examples are illustrative only and are not intended to limit the invention.

Referring to fig. 1, a schematic diagram of an overall structure of a PCB fixing sleeve of the present invention, fig. 2 a schematic diagram of a bottom view angle of the PCB fixing sleeve of the present invention, and fig. 3 a schematic diagram of a top view angle of the PCB fixing sleeve of the present invention, the present invention provides a PCB fixing sleeve, wherein the PCB fixing sleeve 104 fixes a PCB, a permanent magnet 202, and a battery 203 into an integrally formed structure, the PCB includes a first PCB 103 and a second PCB 105 connected by a Flexible Printed Circuit (FPC) line 107, the PCB fixing sleeve 104 is cylindrical as a whole, and two ends thereof are open, further comprising: a first snap 101 for fixing the first PCB 103 at the first open end, a first positioning post 108 for fixing the second PCB 105 at the second open end, wherein, the surface of the first PCB 103 is further provided with a positive conducting strip 106 and a negative conducting strip 102, the PCB board securing sleeve 104 is D-shaped in cross-section, the PCB board securing sleeve being provided with a longitudinally extending escape plane 110 between the first end and the second end, an accommodation space is formed between the avoiding plane 110 and the inner wall of the shell of the capsule endoscope, the FPC flexible flat cable 107 connecting the first PCB 103 and the second PCB 105 is positioned in the accommodation space, the interior of the PCB board fixation sleeve 104 includes a septum 109 between its first and second ends which, when the capsule endoscope is assembled, the battery is loaded into a first receiving space formed by the spacer 109 and the first end of the sleeve and the permanent magnet is loaded into a second receiving space formed by the spacer and the second end of the sleeve.

Further, the PCB board fixing sleeve 104 is made of a polymer material, such as polypropylene, ABS, polycarbonate, and polyimide.

The number of the first elastic buckles 101 is at least two, the first elastic buckles 101 are arranged along the circumferential direction of the first end face of the PCB fixing sleeve 104 and are as uniform as possible, the preferable number of the first elastic buckles 101 is 3, so that the stress of the first PCB 103 in the Z-axis direction is kept uniform, two sides of each first elastic buckle 101 are along the first end face 111 of the PCB fixing sleeve 104 and are provided with notches 113 towards the second end face 112, the elasticity of the first elastic buckles 101 is increased, the first PCB 103 is more easily clamped into the first elastic buckles 101, and the depth of the notches 113 can be finely adjusted according to the difficulty of clamping the first PCB 103 into the first elastic buckles 101.

The upper surface and the first terminal surface 111 looks butt of first PCB board 103, the lower surface of first PCB board 103 with the buckle face 114 butt of first bullet knot 101, buckle face 114 sets up to the plane, buckle face 114 is parallel with the first terminal surface 111 of PCB board fixed sleeve 104 promptly, buckle face 114 also can set up to the inclined plane, buckle face 114 sets up the contained angle of certain angle with the first terminal surface 111 of PCB board fixed sleeve 104 promptly, the purpose that sets up the inclined plane is for the fashioned in-process of mould, make things convenient for buckle face 114 to break away from the mould cavity, the angle on inclined plane can finely tune according to the degree of difficulty of drawing of patterns.

Referring to fig. 4, a schematic plan view of the PCB of the present invention, the first PCB 103 further has a slot 116 corresponding to the first elastic buckle 101, when assembling, the first elastic buckle 101 clamps the first PCB 103 into the first elastic buckle 101 through the slot 116 for fixation, and the first elastic buckle 101 limits the slot of the first PCB 103, so that the first PCB 103 is positioned in the circumferential direction and the Z-axis direction of the PCB fixing sleeve 104, and the surface of the first PCB 103 further has two conductive pole piece mounting holes 117.

Further, the outer diameter of the first PCB 103 is larger than the inner diameter of the PCB fixing sleeve 104.

Furthermore, the number of the first positioning columns 108 is at least two, the first positioning columns 108 are arranged along the circumferential direction of the second end face 112 of the PCB fixing sleeve 104 and are as uniform as possible, the preferred number of the positioning columns is 3, so that the stress of the second PCB 105 in the Z-axis direction is uniform, the second PCB 105 is further provided with positioning holes 115 corresponding to the first positioning columns 108, the first positioning columns 108 fix the second PCB 105 through the positioning holes 115 of the second PCB 105 during assembly, the first positioning columns 108 limit the positioning holes 115, the second PCB 105 abuts against the second end face of the PCB fixing sleeve 104, and glue is used for fixing the first positioning columns 108 and the positioning holes 115. Or the height of the first positioning column 108 is set to be slightly larger than the thickness of the second PCB 105, after the second PCB 105 is assembled to the position, the first positioning column 108 is higher than the upper surface of the second PCB 105, and the higher part is hot-melted in a hot-melting mode, so that the glue position of the hot-melted part is larger than the positioning hole 115, and therefore, the second PCB 105 is positioned in the circumferential direction and the Z-axis direction of the PCB fixing sleeve 104.

Further, the outer diameter of the second PCB board 105 is larger than the outer diameter of the PCB board fixing sleeve 104.

Referring to fig. 5, the capsule endoscope of the present invention mainly includes a lens assembly 201, a permanent magnet 202, a battery 203, a transparent front cover 204, a third PCB 205, a capsule housing 119 and a built-in PCB fixing sleeve 104, wherein the front portion of the capsule housing 119 is provided with a first step surface (not shown) and a first connecting portion (not shown) formed by an inwardly or outwardly protruding boss, the transparent front cover is provided with a second step surface (not shown) and a second connecting portion (not shown) formed by an outwardly or inwardly protruding boss, the first connecting portion and the second connecting portion are nested with each other to form a fixing groove (not shown) for fixing the sleeve structure or the second PCB 105, the outer diameter of the second PCB 105 is larger than the inner diameter of the capsule housing 119, when the PCB fixing sleeve 104 is loaded into the capsule housing 119, the second PCB 105 is snapped into the fixing groove, and the PCB fixing sleeve 104 is fixed with the second PCB 105, thereby positioning the PCB fixing sleeve 104 in the Z-axis direction.

Further, battery 203's shape is cylindrical, and it includes anodal conducting strip 106 and negative pole conducting strip 102, anodal conducting strip and negative pole conducting strip all set up the one end at battery 203, and battery 203 set up in the first accommodation space of PCB board fixed sleeve 104, permanent magnet 202 shape is cylindrical, set up in the second accommodation space of PCB board fixed sleeve 104, and the both ends of PCB board fixed sleeve 104 are sealed by first PCB board 103 and second PCB board 105, battery 203 and permanent magnet 202 set up in the enclosure space, and battery and permanent magnet quilt spacer 109 physical isolation prevents to appear interference or short circuit phenomenon.

Further, the PCB board fixing sleeve 104 also serves as a barrier between the capsule endoscope and a battery disposed inside the capsule endoscope, so as to prevent the capsule shell 119 from overheating in case of overheating or short circuit of the battery 203, and the battery 203 is disposed inside the PCB board fixing sleeve 104 to be a closed space, so that dust carried by the battery itself or other substances generated by the battery under a certain specific environment will not cause pollution of the transparent front cover to affect the shooting of the lens.

The assembly process of the capsule endoscope is explained below: firstly, providing a PCB fixing sleeve with openings at two ends, wherein the first end of the PCB fixing sleeve comprises a first elastic buckle, the second end of the PCB fixing sleeve comprises a positioning column, a spacer positioned between the first end and the second end of the PCB fixing sleeve is arranged in the PCB fixing sleeve, the cross section of the PCB fixing sleeve is D-shaped, a longitudinally extending avoiding plane is arranged between the first end and the second end of the PCB fixing sleeve, and an accommodating space is formed between the avoiding plane and the inner wall of the capsule shell; secondly, provide first PCB board and second PCB board by the connection of FPC flexible flat cable, first PCB board sets up the draw-in groove corresponding with first bullet knot, and the second PCB board sets up the locating hole corresponding with the reference column.

Then, a battery is arranged in a first accommodating space, a positive conducting strip and a negative conducting strip face outwards, the first PCB is pushed into the first elastic buckle, the first PCB is arranged between a buckle surface of the first elastic buckle and a first end surface of a PCB fixing sleeve of the PCB fixing sleeve, the positive conducting strip and the negative conducting strip penetrate through a welding hole in the surface of the first PCB and are welded, a permanent magnet is arranged in a second accommodating space and is fixed by glue, the FPC flexible flat cable penetrates from the first end of the PCB fixing sleeve to the second end of the PCB fixing sleeve, the FPC flexible flat cable is folded, a positioning hole of the second PCB is aligned to a positioning column of the second end of the PCB fixing sleeve, the second PCB is abutted to the second end surface of the PCB fixing sleeve, and the positioning column and the positioning hole are fixed by the glue;

and finally, inserting the PCB fixing sleeve into the capsule shell, enabling the pressing position of the second PCB or the PCB fixing sleeve to be arranged on the step surface of the capsule shell, assembling the transparent front cover and the capsule shell, enabling the first connecting part and the second connecting part to be mutually nested, enabling the second PCB to be arranged in the fixing groove, and enabling the second PCB to be limited by the capsule shell and the transparent front cover in the Z-axis direction.

By adopting the technical scheme of the invention, only one PCB fixing sleeve is needed to fix the first PCB, the second PCB, the battery and the permanent magnet into a whole, the first PCB and the second PCB are fixed at two ends of the PCB fixing sleeve by utilizing a buckle or/and a positioning column, meanwhile, the PCB fixing sleeve is internally provided with a spacer, so that a first containing space and a second containing space for assembling the capsule battery and the permanent magnet are formed, the first containing space and the second containing space are relatively independent closed spaces, the battery and the permanent magnet are separated by the spacer without interference or short circuit risk, the structure is simple, the assembly process is convenient, the step of frequently using glue is reduced, the production efficiency is improved, the PCB fixing sleeve is provided with an avoiding plane, the containing space is formed between the avoiding plane and the inner wall of the capsule shell, and the FPC flexible flat cable for connecting the first PCB and the second PCB is positioned in the containing space, thereby avoiding the FPC flexible flat cable from being broken due to extrusion in the capsule shell.

Fig. 6 is a schematic structural diagram of a PCB fixing sleeve according to a second embodiment of the present invention, the second end surface 112 of the PCB fixing sleeve 104 is provided with an outwardly extending pressing location 118, and when the PCB fixing sleeve 104 is installed in the capsule housing 119, the pressing location 118 is snapped into the fixing groove formed by the first connecting portion (not shown) and the second connecting portion (not shown), so that the PCB fixing sleeve 104 is positioned and fixed in the Z-axis direction.

Fig. 7 is a schematic structural diagram of a PCB fixing sleeve according to a third embodiment of the present invention, wherein a limiting portion 123 is further disposed at an end of the first positioning post 108 of the second end surface 112 of the PCB fixing sleeve, the limiting portion 123 is a conical strong release or post buckle, an outer diameter of the limiting portion is larger than an inner diameter of the positioning hole 115 of the second PCB 105, and when the second PCB 105 is pushed into the first positioning post 108 of the second end surface 112 of the PCB fixing sleeve through the positioning hole 115 of the second PCB 105 during assembly, the second PCB 105 is limited in the Z-axis direction by the limiting portion 123, so that glue is not needed for fixation, and reliability of a product is improved.

Further, a second elastic buckle 120 may also be disposed at a second end of the PCB fixing sleeve, the second PCB 105 is disposed with a second slot (not shown in the figure) adapted to the second elastic buckle 120, the second elastic buckle 120 fixes the second PCB 105 on the second end surface 112 of the PCB fixing sleeve through the second slot of the second PCB 105, and the second elastic buckle 120 is similar to the first elastic buckle 101 in structure.

Furthermore, the first end surface 111 of the PCB fixing sleeve may also be provided with a second positioning column (not shown in the figure), the first PCB 103 is provided with a second positioning hole (not shown in the figure) adapted to the second positioning column, the second positioning column fixes the first PCB 103 on the first end surface 111 of the PCB fixing sleeve through the second positioning hole of the first PCB 103, and the second positioning column is similar to the first positioning column 108 in structure.

Referring to fig. 8, a schematic diagram of a structure of a PCB fixing sleeve according to a fourth embodiment of the present invention, a schematic diagram of a first bracket according to a fourth embodiment of fig. 9, and a schematic diagram of a second bracket according to a fourth embodiment of fig. 10, where the PCB fixing sleeve 104 is composed of a first bracket 121 and a second bracket 122, a structure of a first end surface of the first bracket 121 is consistent with a structure of a first end surface of the PCB fixing sleeve, a second snap 120 is disposed on another end surface of the first bracket 121, a structure of a second end surface of the second bracket 122 is consistent with a structure of a second end surface of the PCB fixing sleeve 104, a positioning groove 124 is disposed on another end surface of the second bracket 122, and the first bracket 121 and the second bracket 122 are fastened to form the PCB fixing sleeve through the second snap 120 and the positioning groove 124.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a PCB board fixed sleeve, includes the capsule endoscope, its characterized in that, PCB board fixed sleeve includes FPC soft arranging wire, first PCB board and second PCB board are connected to FPC soft arranging wire, PCB board fixed sleeve's both ends set up first open end and second open end, first PCB board is fixed with first open end through first bullet knot, the second PCB board is fixed with the second open end through first reference column, first PCB board surface still further sets up anodal conducting strip and negative pole conducting strip, the first open end of PCB board fixed sleeve and second open end form the plane of dodging of longitudinal extension, PCB board fixed sleeve's inside still sets up the spacer that is located between first open end and the second open end.

2. The PCB fixing sleeve of claim 1, wherein a containing space is formed between the avoiding plane and the inner wall of the shell of the capsule endoscope, and the FPC flexible flat cable is located in the containing space.

3. The PCB fixing sleeve of claim 1, wherein the PCB fixing sleeve is made of any one of polypropylene, ABS, polycarbonate and polyimide.

4. The PCB fixing sleeve of claim 1, wherein the first elastic buckles are arranged along a circumferential direction of the first open end of the PCB fixing sleeve, and the number of the first elastic buckles is at least two.

5. The PCB board fixing sleeve of claim 1, wherein the catching surface of the first snap is a flat surface or a slanted surface.

6. The PCB fixing sleeve of claim 1, wherein an outer diameter of the first PCB is larger than an inner diameter of the PCB fixing sleeve.

7. The PCB board fixing sleeve of claim 1, wherein the first positioning posts are arranged along a circumferential direction of the second open end of the PCB board fixing sleeve, and the number of the first positioning posts is at least two.

8. The PCB board securing sleeve of claim 1, wherein the second PCB board has an outer diameter greater than an outer diameter of the PCB board securing sleeve.

9. The PCB board fixing sleeve of claim 1, wherein the second open end of the PCB board fixing sleeve is provided with an outwardly extending pressing position for fixing the PCB board fixing sleeve.

10. The PCB fixing sleeve of claim 1, wherein a limiting portion is further disposed at an end of the first positioning post at the second opening end of the PCB fixing sleeve, the limiting portion is a tapered forced release or a tapered post buckle, and an outer diameter of the limiting portion is larger than an inner diameter of the positioning hole of the second PCB.

11. The PCB fixing sleeve of claim 1, wherein the PCB fixing sleeve comprises a first bracket and a second bracket, and the first bracket and the second bracket are fastened to each other by a second elastic fastener and a positioning slot to form the PCB fixing sleeve.

12. A capsule endoscope comprising a lens assembly, a permanent magnet, a battery, a transparent front cover, a third PCB and a capsule housing, further comprising a PCB fixing sleeve according to any one of claims 1 to 11.