KR102064115B1 - Flexible printed circuit board and endoscopic inspection apparatus comprising the same - Google Patents

Abstract

According to the present invention, a flexible circuit board comprises: a flexible base body formed to extend along a longitudinal direction; a signal line disposed on the base body and transmitting data photographed by an imaging device connected to one end of the base body based on the longitudinal direction; a power line disposed on the base body and supplying power to the imaging device; and a plurality of position recognition patterns formed at a predetermined interval along the longitudinal direction on the base body.

Description

FLEXIBLE PRINTED CIRCUIT BOARD AND ENDOSCOPIC INSPECTION APPARATUS COMPRISING THE SAME}

The present invention relates to a flexible circuit board and an endoscope inspection apparatus including the same.

Steam generators in nuclear power plants have thousands or tens of thousands of heat pipes installed inside a bundle, depending on the type. Inside the heat pipes, high-temperature, high-pressure radioactive fluids containing nuclear reactor heat of nuclear reactors flow, and non-radioactive fluids that convert into steam flow out of the heat pipes.

In general, the worker wears safety equipment (approximately 20 kg, such as a car shield and a gas mask) to prevent damage to the heat pipe, and inserts a test device into the inner gap (about 3 to 7 mm) of the heat pipe bundle to check whether there is a foreign substance. After that, if there is a foreign material to remove the foreign matter, there is a problem that exposes workers to a large amount of exposure for a long time.

Therefore, there is a need for the development of a device capable of remotely removing foreign substances or inspecting the surface of the heat pipe without exposing the workers to the exposure.

The gap between the heat pipe and the heat pipe is very narrow. However, sludge and foreign substances may enter the gap between the heat pipes and cause damage to the heat pipes. Visual inspection is periodically performed to prevent damage to the heat pipes, and endoscopy is performed by connecting a camera to a flexible thin plate having straightness and ductility in order to perform a smooth inspection even in a narrow gap.

The present invention has been made to solve the above problems, to provide a flexible circuit board that can facilitate positioning and an endoscope inspection apparatus including the same.

A flexible circuit board according to an embodiment of the present invention, the flexible substrate is formed extending in the longitudinal direction; A signal line disposed on the base body and configured to transmit data photographed by an imaging apparatus connected to one end of the base body based on the longitudinal direction; A power line disposed on the base and configured to supply power to the photographing apparatus; It includes a plurality of position recognition patterns are formed spaced apart at a predetermined interval along the longitudinal direction on the base body, the position recognition pattern, in the longitudinal direction so as to be symmetric with each other based on a straight line drawn along the longitudinal direction The substrate is disposed adjacent to both ends of the base body based on a width direction, which is one vertical direction, and the base body covers a layer on which the position recognition pattern is formed and a layer on which the position recognition pattern is formed. It has a laminated structure including a layer to be formed.

An inspection apparatus according to an embodiment of the present invention, the head portion provided with a photographing device for imaging; A signal line for transmitting data photographed by the photographing apparatus, a power line for supplying power to the photographing apparatus, and a plurality of position recognition patterns spaced apart at predetermined intervals along a longitudinal direction, wherein the head portion and A flexible circuit board having one end connected thereto; A body to which the other end of the flexible circuit board is connected and which accommodates the flexible circuit board; And a recognition unit disposed on the body and recognizing the position recognition pattern passing through a predetermined position, thereby generating a signal that is a basis for calculating the total unrolled length of the flexible circuit board. The patterns are disposed adjacent to both ends of the base body in the width direction, which is one direction perpendicular to the longitudinal direction, so as to be symmetrical with each other based on a straight line drawn along the longitudinal direction, and the base body is the position recognition pattern. It has a laminated structure comprising a layer to be formed, and a layer formed of a light-transmissive material covering the layer on which the position recognition pattern is formed.

Accordingly, even where the inspection apparatus including the flexible circuit board is inserted remotely from the outside of the region to be worked on, it is possible to accurately recognize the location of the unusual occurrence during the inspection.

The time required for work can be reduced, minimizing the exposure of the worker.

No additional fabrication process is required to locate the inspection device, including the flexible circuit board.

1 is a perspective view of a test apparatus according to an embodiment of the present invention.
2 is a perspective view of a flexible circuit board including the flexible circuit board of the inspection apparatus according to an embodiment of the present invention.
3 is a perspective view of a flexible circuit board and a driving unit of the inspection apparatus according to an embodiment of the present invention.
4 is an exploded view of a flexible circuit board according to an embodiment of the present invention.
5 is a cross-sectional view of the flexible circuit board and the recognition unit of the inspection apparatus according to an embodiment of the present invention.
6 is an exploded view of a flexible circuit board according to another embodiment of the present invention.
7 is a cross-sectional view of a flexible circuit board and a recognition unit of the inspection apparatus according to another embodiment of the present invention.
8 is an exploded view of a flexible circuit board according to another embodiment of the present invention.
9 is a cross-sectional view of the flexible circuit board and the recognition unit of the inspection apparatus according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, when it is determined that the detailed description of the related well-known configuration or function interferes with the understanding of the embodiments of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but there is another component between each component. It will be understood that may be "connected", "coupled" or "connected".

1 is a perspective view of an inspection apparatus 1 according to an embodiment of the present invention.

Referring to the drawings, the inspection apparatus 1 including the flexible circuit board 10 according to an embodiment of the present invention, the head portion 30, the flexible circuit board 10, the body 50 and the recognition unit ( 60, and may include a driver 55.

Head part 30

The head part 30 is a component that may be connected to one end of the flexible circuit board 10 based on the length direction D of the flexible circuit board 10 and positioned outside the body 50. The endoscope unit together with the flexible circuit board 10 may be used. Can be formed. As the flexible circuit board 10 is unrolled, the head part 30 may be advanced, and the inspection may be performed in a manner toward the work area.

The head unit 30 includes a photographing apparatus 31 for capturing an image. The imaging apparatus 31 may include an optical system composed of a lens or the like, and an image sensor for acquiring data captured from an image formed by light collected through the optical system. The image capturing apparatus 31 may capture an image of the work area and transmit the image to the processor 58 through the signal line 11 in the wiring to be described later in the form of data contained in an electrical signal. In addition, the head part 30 may further include an illumination device 32 that provides light to facilitate shooting in the dark part having insufficient light amount.

The head part 30 may include a guide hole 33. The guide hole 33 is an opening capable of supporting the work tool 40 so that the work tool 40 is inserted and positioned adjacent to the work area. Therefore, the guide hole 33 has an open shape along the longitudinal direction D, and the work tool 40 extending along the longitudinal direction D to reach the head portion 30 may be inserted.

The work tool 40 may extend from the body 50 to reach a position adjacent to one of both ends of the head portion 30 along the width direction W, which is one direction perpendicular to the length direction D. FIG. Therefore, the guide hole 33 may include guide holes 33 formed at both sides of the head part 30 based on the width direction W. When the work tool 40 approaches a position adjacent to one side of the head portion 30, the work tool 40 may be inserted into and supported in the guide hole 33 at the corresponding position and guided to the work area.

Body 50

The body 50 may include a housing 53 and a winding portion. The housing 53 is a component having an internal space 51 which becomes a skeleton of the entire inspection apparatus 1 and in which the flexible circuit board 10 can be wound and accommodated. The housing 53 includes an upper plate 531 disposed below the lower plate 533 and the lower plate 533, and a side plate 532 connecting the lower plate 533 and the upper plate 531. The inner space 51 surrounded by the 533 and the side plate 532 may be formed.

In the body 50, an entrance 54 communicating with the inner space 51 and the outside is formed so that the flexible circuit board 10 may be unwound from the inner space 51. The flexible circuit board 10 may be injected into the internal space 51 or discharged to the outside through the entrance 54. The doorway 54 may be formed in a slit form to allow the thin film type flexible circuit board 10 to enter and exit, but to prevent foreign matter from entering and exiting as much as possible.

Sight glasses (not shown) may be disposed at positions adjacent to the entrance and exit 54 among the positions on the housing 53. The sight glass is formed to be transparent, and the user can observe the flexible circuit board 10 to which the user is unwound through the sight glass.

The pocket 56 may be formed through the housing 53 included in the body 50. The pocket 56 is a space through which the work tool 40 is inserted, and allows the work tool 40 to pass through the body 50 and be discharged from an area adjacent to the doorway 54. The work tool 40 discharged from the outlet of the pocket 56 located in the area adjacent to the doorway 54 through the pocket 56 may extend along the length direction D to reach the head portion 30. . That is, the pocket 56 serves to guide the work tool 40 so that the work tool 40 can face the head portion 30. The pocket 56 may be formed on the side plate 532 of the housing 53, or may be formed on the upper plate 531 and the lower plate 533.

The pocket 56 may include a straight region and a curved region. The straight region extends along the longitudinal direction D and includes an outlet in communication with the outside in the region adjacent the doorway 54. With this shape of the straight region, the work tool 40 can extend through the body 50 to reach the head portion 30 and can be supported by the pocket 56.

The curved area is in communication with the linear area and the outside so that the work tool 40 can be inserted from the outside and bent to reach the straight area, and may be formed in a curved tubular shape. That is, the work tool 40 may pass through the curved area and pass through the straight area until the outlet of the pocket 56 reaches the exit of the pocket 56. The curved area need not necessarily have a curved profile throughout, and may include a portion having a curved profile and another portion having a straight profile.

The winding is a component consisting of mechanical elements for winding the flexible circuit board 10. When the flexible circuit board 10 is arranged along the longitudinal direction D, if the one end of the flexible circuit board 10 is connected to the head portion 30, the winding portion of the flexible circuit board 10 located on the opposite side thereof is Connected to the other end. The components of the winding may be connected to the housing 53 so that the positions relative to each other are fixed.

The winding portion may include a cylindrical bobbin 52. The bobbin 52 is a component on which the flexible circuit board 10 is wound. The other end of the flexible circuit board 10 is connected to the outer surface of the bobbin 52, and as the bobbin 52 rotates, the flexible circuit board 10 is wound around the outer surface of the bobbin 52, or the bobbin 52 It is unwound from the outer side of the. The bobbin 52 can rotate the winding shaft in the axial direction. The winding shaft may be parallel to the width direction W. As shown in FIG.

The shaft member may be disposed in the bobbin 52. The shaft member may be formed along the winding shaft to become a center of rotation of the bobbin 52. A coil spring having a spiral profile in a cross section that is flexible and cut in a plane perpendicular to the winding axis may be further disposed, one end of the coil spring connected to the shaft member and the other end connected to the inner side of the bobbin 52. have. According to this connection, the bobbin 52 can be returned to the original position by the elastic force of the coil spring when the bobbin 52 rotates from the original position. The coil spring may be wound around the shaft member.

The inspection apparatus 1 according to an embodiment of the present invention may include a processor 58 that receives the photographed data and converts the captured data into an image. The processor 58 may be seated on the upper side of the bobbin 52.

The processor 58 is a component that includes a device capable of performing a logical operation to perform a control command, and may include a central processing unit (CPU) or the like. The processor 58 is connected to the components of the photographing apparatus 31, the lighting apparatus 32, the display unit, the work tool 40, and the like, and transmits a signal according to a control command to each component. The information obtained by being connected to the sensor or the acquisition units may be delivered in the form of a signal. Since the processor 58 may be electrically connected to the respective components, the processor 58 may further have a communication module that is connected by wire or wirelessly communicates with each other.

The control command executed by the processor 58 may be stored and utilized in a storage medium, and the storage medium may be a device such as a hard disk drive (HDD), a solid state drive (SSD), a server, a volatile medium, a nonvolatile medium, or the like. However, the type is not limited thereto. The storage medium may further store data required for the processor 58 to perform a task.

The bobbin 52 rotates in a relative relationship with the processor 58, and the flexible circuit board 10 wound around the bobbin 52 also rotates in a similar manner. However, the wiring of the flexible circuit board 10 and the processor 58 must be electrically connected. Accordingly, the shaft member may include a slip ring 59 to electrically connect the wiring of the flexible circuit board 10 to the processor 58 regardless of the rotation of the bobbin 52.

The winding may include a handwheel 57. The handwheel 57 is a component formed on the outside of the housing 53 to rotate in conjunction with the bobbin 52. The handwheel 57 has a manipulator 571 that can be gripped by a user, which is disposed at a position away from the center of the manipulating gear and the manipulating gear. As the handle 571 rotates, the operation gear rotates. The operation gear is directly or indirectly engaged with the bobbin gear disposed on the bobbin 52, so that the bobbin 52 may rotate in conjunction with the rotation of the operation gear. Therefore, as the user holds the handle 571 and rotates the handwheel 57, the bobbin 52 may rotate to unwind or wind the flexible circuit board 10.

The inspection apparatus 1 according to an embodiment of the present invention may include a display unit (not shown). The processor 58 may encode data received from the photographing apparatus 31 through the flexible circuit board 10 and convert the data into an image. The display unit may receive the converted image from the processor 58 and display the converted image. . The display device may be configured as an LCD capable of displaying an image, but the type thereof is not limited thereto.

The body 50 may include a straight holding part which is slidably disposed at a position adjacent to the doorway 54. One end of the straight holding portion may press the flexible circuit board 10. As one end of the straight holding portion presses the flexible circuit board 10, the flexible circuit board 10 may extend in the longitudinal direction D, not in the direction in which the flexible circuit board 10 was wound.

In the area adjacent to the entrance and exit 54, auxiliary light emitting light is further arranged to assist in unwinding the flexible circuit board 10.

Recognition unit 60

The recognition unit 60 is a component that recognizes the position recognition pattern 19 formed on the flexible circuit board 10. The recognition unit 60 is disposed on the body 50, and recognizes the position recognition pattern 19 passing through a predetermined location, which becomes a basis for calculating the total unrolled length of the flexible circuit board 10. Generate a signal. In one embodiment of the present invention, the recognition unit 60 is disposed adjacent to the doorway 54 of the body 50, the position recognition pattern 19 of the flexible circuit board 10 discharged through the doorway 54 It is configured to recognize.

The recognition unit 60 includes a light emitting unit for irradiating light to the position recognition pattern 19 to recognize the position recognition pattern 19, and a light receiving unit for recognizing light reflected from the position recognition pattern 19. Can be configured. In this case, the position recognition pattern 19 may be printed on the flexible circuit board 10 with conductive ink.

The recognition unit 60 may include a metal detection sensor for detecting metal included in the position recognition pattern 19. In this case, the position recognition pattern 19 may be made of a material including a metal and disposed on the flexible circuit board 10.

Inspection apparatus 1 according to an embodiment of the present invention may further include an auxiliary recognition unit (63). The auxiliary recognition unit 63 is a component capable of recognizing a state in which the flexible circuit board 10 is entirely wound or unwound. For example, the auxiliary recognition unit 63 includes a Hall sensor, and a magnetic material is disposed in the head unit 30, and the auxiliary recognition unit 63 approaches the head unit 30 as the auxiliary recognition unit 63. It can be appreciated that the flexible circuit board 10 is entirely wound, but the manner is not limited thereto.

Flexible circuit board (10)

2 is a perspective view of a flexible circuit board 10 including the flexible circuit board 10 of the inspection apparatus 1 according to an embodiment of the present invention. In FIG. 2, the head part 30 to which the flexible circuit board 10 is connected is shown in a modified form.

The flexible circuit board 10 includes a base body, a signal line 11, a power supply line 12, and a position recognition pattern 19. The flexible circuit board 10 is a component that transfers the head portion 30 to the work area and transmits the data captured by the imaging device 31. Therefore, one end of the flexible circuit board 10 is connected to the head portion 30, the other end is connected to the bobbin 52 included in the body 50.

As described above, the flexible circuit board 10 may have a plurality of driving holes 15 spaced apart in the longitudinal direction D. The driving hole 15 may be formed by recessing the flexible circuit board 10 or may be formed by forming a hole in the flexible circuit board 10 and opening the hole. The driving hole 15 may be disposed in an area adjacent to the center of the flexible circuit board 10 based on the width direction W. As shown in FIG. The driving hole 15 may be disposed between the signal line 11 and the power line 12 based on the width direction W.

The flexible circuit board 10 may include an intermediate layer 181 on which the signal line 11 and a power line 12 are disposed, a lower layer 183 disposed below the intermediate layer 181, and an upper layer disposed above the intermediate layer 181. A stack structure including 182 may be formed. The laminated structure will be described in more detail in the description of the position recognition pattern 19.

Drive part 55

3 is a perspective view of the flexible circuit board 10 and the driving unit 55 of the inspection device 1 according to an embodiment of the present invention.

The body 50 may include a driving unit 55. The driver 55 is a component that moves the flexible circuit board 10 along the longitudinal direction D. FIG. The longitudinal direction D may include a first longitudinal direction D1 facing the front of the head part 30 and a second longitudinal direction D2 opposite to the first longitudinal direction D1. As the 55 is driven, the flexible circuit board 10 may move in the first length direction D1 or the second length direction D2.

The driving unit 55 may include a cylindrical driving body 553 and a plurality of driving protrusions 551 protruding radially outward from the outer surface of the driving body 553. Drive body 553 is coupled to the drive shaft member 552 formed in parallel with the width direction (W), it is possible to rotate the direction in which the drive shaft member 552 extends in the axial direction, one of the tangential direction of the outer peripheral surface It may be arranged in parallel with the longitudinal direction (D). In the flexible circuit board 10, a plurality of driving holes 15 formed at predetermined intervals along the length direction D may be formed. As the driving protrusion 551 is inserted into the driving hole 15 of the flexible circuit board 10 and the driving body 553 rotates, the flexible circuit board 10 corresponds to the rotation direction of the driving body 553. Move along the longitudinal direction D. As the driving body 553 rotates, the plurality of driving protrusions 551 may be sequentially inserted into the driving holes 15 to move the flexible circuit board 10.

In order to sandwich the flexible circuit board 10, the driver 55 may further include an auxiliary roller 554. The auxiliary roller 554 may be rotatably connected to the housing 53 in the same direction as the drive shaft in the axial direction. The flexible circuit board 10 is sandwiched between the auxiliary roller 554 and the driving body 553 so that the driving protrusion 551 can be stably inserted into the driving hole 15.

The driving unit 55 may include an encoder for obtaining the number of rotations of the driving body 553. The encoder may measure the number of rotations of the driving body 553 and transmit the same to the processor 58. Thus, the encoder can be electrically connected to the processor 58.

The driving unit 55 may be directly or indirectly connected to the bobbin gear and rotate in conjunction with the rotation of the bobbin 52. As the bobbin 52 rotates, the flexible circuit board 10 is unwound or wound, so that the driving unit 55 for discharging or entering the flexible circuit board 10 also operates in the same manner. The gear connecting the driving body 553 and the bobbin gear is bobbin 52 so that the flexible circuit board 10 can be smoothly wound or unwound when the bobbin 52 and the driving body 553 rotate in conjunction with each other. The linear velocity of the outer circumferential surface and the linear velocity of the outer circumferential surface of the driving body 553 may have a dimension to form a gear ratio.

Laminated structure

4 is an exploded view of a flexible circuit board 10 according to an embodiment of the present invention. 5 is a cross-sectional view of the flexible circuit board 10 and the recognition unit 60 of the inspection device 1 according to an embodiment of the present invention.

4 and 5, the configuration of the flexible circuit board 10 having the laminated structure together with the description of the position recognition pattern 19 will be described in detail.

The flexible circuit board 10 is formed by arranging predetermined components on a substrate extending along the length direction D. FIG. The substrate may be formed of a polyimide film, and may be formed in a stacked structure of the intermediate layer 181, the upper layer 182, and the lower layer 183 as described above.

The signal line 11 and the power line 12 may be disposed in the intermediate layer 181. The signal line 11 may be printed and disposed in a circuit pattern in a thin film form in order to transmit data photographed by the photographing apparatus 31 to the processor 58. An auxiliary signal line 13 may be further disposed on the intermediate layer 181. The auxiliary signal line 13 may be disposed between the power supply line 12 and the signal line 11. The auxiliary signal line 13 may be disposed to surround the driving hole 15. The power line 12 may be printed and arranged in a circuit pattern in a thin film form for supplying power to the photographing apparatus 31. The power line 12 and the signal line 11 may be formed in plural and spaced apart from each other along the width direction W. FIG.

At one point on the base, a number representing the distance from one end of the base to one point on the base may be formed. Numbers can be formed like graduations. 4 and the scale and the scale are not shown.

An intermediate layer 181 is disposed between the upper layer 182 and the lower layer 183. Therefore, the intermediate layer 181 is seated on the lower layer 183 and the upper layer 182 is seated on the intermediate layer 181 to form a laminated structure.

Since a current or an electrical signal flows along the signal line 11 or the power line 12, the signal line 11 or the power line 12 may generate noise. In addition, it is necessary to prevent the unnecessary input of external signals to the signal line 11 and the power line 12 formed in a thin film form.

Therefore, the flexible circuit board 10 according to the exemplary embodiment of the present invention may include a shield. The shield may include signal line shields 161, 162 and 163 shielding the signal line 11 and power line shields 171, 172 and 173 shielding the power line 12.

The signal line shields 161, 162, and 163 surround at least a part of the surface of the signal line 11, thereby preventing unnecessary signals from flowing into the signal line 11 from the outside. That is, the signal line shields 161, 162 and 163 may allow unnecessary signals to be introduced into the signal line 11 from the outside into the signal line shields 161, 162 and 163 instead of the signal line 11.

As the signal line shields 161, 162, 163, a copper foil made of the same material as the signal line 11, or a silver foil having excellent shielding effect, or an EMI shield may be used. The shape of the signal line shields 161, 162, and 163 is not particularly limited, and various patterns such as a mesh shape, a plate shape, a linear shape, or a lattice shape may be used.

The signal line shields 161, 162, and 163 may have a three-dimensional shape that surrounds the signal line 11 and extends along the length direction D of the signal line 11. Since the signal line shields 161, 162, and 163 are formed in a three-dimensional shape surrounding the signal line 11 to protect the entire surface of the signal line 11, noise and the like that can flow into the signal line 11 can be more reliably shielded. .

The flexible circuit board 10 may further include a ground portion (not shown) connected to the signal line shields 161, 162, and 163. External unnecessary signals and the like introduced into the signal line shields 161, 162 and 163 without being introduced into the signal line 11 may be connected to the ground portion at one end of the signal line shields 161, 162 and 163 and discharged.

The signal line shields 161, 162, and 163 may be formed by dividing into several parts due to the nature of the stacked structure. The side signal line shield 161 disposed on the intermediate layer 181 may be disposed on the left and right sides of the signal line 11 with the signal line insulator interposed therebetween.

The upper signal line shield 162 disposed on the upper layer 182 may be provided at a position corresponding to the signal line 11 and the side signal line shield 161. That is, as shown in the figure, the upper signal line shield 162 may have a width that can cover both the side signal line shield 161 and the signal line 11.

The lower signal line shield 163 disposed on the lower layer 183 may be provided at a position corresponding to the signal line 11 and the side signal line shield 161. That is, as shown in the drawing, the lower signal line shield 163 may have a width that can cover both the side signal line shield 161 and the signal line 11.

The flexible circuit board 10 according to the exemplary embodiment of the present invention may further include a signal line plating through hole 164. The signal line plating through hole 164 is a hole passing through the signal line shields 161, 162, and 163, and a metal is plated on the inner circumferential surface of the hole to electrically connect the signal line shields 161, 162, and 163.

The signal line plating through hole 164 may be provided in plurality in a predetermined interval along the length direction D of the signal line 11. As the number of signal line plating through holes 164 increases, shielding effects may be enhanced. The signal line plating through hole 164 electrically connects the upper signal line shield 162, the side signal line shield 161, and the lower signal line shield 163, which are shields disposed on the top, side, and bottom surfaces of the signal line 11, to each other in order. Signal line shields 161, 162, and 163 may be formed to surround the signal line 11 in a three-dimensional shape, and the noise to be introduced into the signal line 11 may be more smoothly shielded.

At this time, it is necessary to prevent the signal line 11 and the signal line shields 161, 162, and 163 from contacting (shorting). Accordingly, the flexible circuit board 10 may further include a signal line insulator. The signal line insulator may be provided between the signal line 11 and the signal line shields 161, 162, and 163 to break an electrical connection between the signal line 11 and the signal line shields 161, 162, and 163. The material of the signal line insulator is not particularly limited, and for example, polyimide may be used.

Similar to the signal line insulator and signal line shields 161, 162 and 163 applied to the signal line 11, the power line insulator and power line shields 171, 172 and 173 which play the same role to the power line 12 can be applied. have. The power line shields 171, 172, and 173 may also include an upper power line shield 172, a side power line shield 171, and a lower power line shield 173, and the power line plating through hole 174 is described above. The power line shields 171, 172, and 173 may be electrically connected to each other.

Position Recognition Pattern (19)

The flexible circuit board 10 includes a position recognition pattern 19. The position recognition pattern 19 is a pattern in which a plurality of dogs are spaced apart at predetermined intervals along the longitudinal direction D on the substrate, and the recognition unit 60 is used to determine in which position the head unit 30 is disposed. Is recognized).

The position recognition pattern 19 may be disposed adjacent to at least one end of both ends of the base body with respect to the width direction W perpendicular to the length direction D. FIG. In the drawing, the position recognition pattern 19 is shown as being arranged in both line-symmetrical shapes about a straight line drawn along the longitudinal direction D at both ends.

The position recognition pattern 19 may include a plurality of first position recognition patterns 191a formed to be spaced apart at first intervals along the longitudinal direction D, and second intervals different from the first interval along the longitudinal direction D. FIG. It may include a plurality of second position recognition pattern (191b) formed to be spaced apart. The first position recognition pattern 191a and the second position recognition pattern 191b may be disposed at different positions along the width direction W. FIG.

In addition, the position recognition pattern 19 may include a plurality of third position recognition patterns 191c spaced apart from each other by a third interval different from the first and second intervals described above. In addition, the position recognition pattern 19 may include a plurality of fourth position recognition patterns 191d spaced at a fourth interval different from the first, second, and third intervals. The third position recognition pattern 191c and the fourth position recognition pattern 191d may also be disposed at positions different from other position recognition patterns with respect to the width direction W. FIG.

The first position recognition pattern 191a and the second position recognition pattern 191b may not only have different intervals spaced apart from each other, but also lengths in which each pattern extends along the length direction D may also be different. Specifically, the length in the longitudinal direction D of each of the position recognition patterns 19 may be equal to the distance between the corresponding position recognition patterns 19 adjacent to each other. Since the first and second intervals are different from each other, the length of the first position recognition pattern 191a and the length of the second position recognition pattern 191b may be different from each other. The same may be applied to the third position recognition pattern 191c and the fourth position recognition pattern 191d.

As shown, the second interval may be greater than the first interval, the third interval may be greater than the second interval, and the fourth interval may be greater than the third interval. In addition, the second position recognition pattern 191b is positioned inside the first position recognition pattern 191a based on the width direction W, and the third position recognition pattern 191c is located inside the second position recognition pattern 191b. In this case, the fourth position recognition pattern 191d may be positioned inside the third position recognition pattern 191c. Therefore, the position recognition pattern 19 may be disposed closer to the outer side based on the width direction W. As shown in FIG. However, the reverse arrangement is also possible, and the arrangement is not limited thereto.

In one embodiment, the position recognition pattern 19 is made of a material containing a conductive ink, it can be printed on the base. The position recognition pattern 19 may be formed of a material including a metal, and may be formed on the substrate by deposition or etching. Among the layers constituting the substrate, the position recognition pattern 19 may be formed on at least one of the upper layer 182 and the lower layer 183.

When the position recognition pattern 19 is formed on the base body, the position recognition pattern 19 may be formed at the same time as the signal line 11 and the power supply line 12. Therefore, the time required for manufacturing can be shortened.

The recognition unit 60 recognizes the position recognition pattern 19. When the position recognition pattern 19 is disposed at both ends of the flexible circuit board 10 in the width direction W, the two recognition units 60 are configured to recognize the patterns disposed at both ends, respectively, in the width direction W. It may be spaced apart along the. In one embodiment of the present invention, since two position recognition patterns 191 are formed on the upper layer 182, and two position recognition patterns 192 are formed on the lower layer 183, respectively. In order to recognize 192, two first recognition units 61 facing the upper layer 182 may be disposed, and two second recognition units 62 facing the lower layer 183 may be disposed.

When the flexible circuit board 10 is unwound or wound up, one portion of the flexible circuit board 10 passes through the entrance and exit 54. When one place passes through the entrance and exit 54, the position recognition pattern 19 located in the corresponding place is recognized by each recognition unit 60. When the position recognition pattern 19 is formed of ink, the recognition unit 60 recognizes the pattern by using light reflected by irradiating light, and when the position recognition pattern 19 is formed of metal, the recognition unit 60. ) Is composed of a metal sensor to recognize the pattern.

Since the flexible circuit board 10 is unwound or wound up, the pattern recognized by the recognition unit 60 changes. The processor 58 receives a signal generated as the recognition unit 60 recognizes the position recognition pattern 19. From the change of the signal, the processor 58 may determine whether the flexible circuit board 10 is being unwound or wound up. Can be. Also, from the change in the signal, the speed of the unrolled or wound flexible circuit board 10 can be grasped, and the length of the total unrolled flexible circuit board 10 can be calculated. The length of the total unrolled flexible circuit board 10 can also be corrected by further using the information obtained by the encoder.

When the flexible circuit board 10 is bent in progress, the processor 58 may know the bending direction and the bending angle. This can be seen from the change of data captured by the imaging device 31 of the head unit 30, but the method of finding out the direction and angle of bending is not limited thereto. Since the processor 58 can know the direction and angle at which the flexible circuit board 10 is bent, the length of the flexible circuit board 10 uncovered from the signal received from the recognition unit 60 is combined and the head portion ( It may be calculated to what position 30 has progressed in relation to the current body 50.

The recognition unit 60 may recognize the position recognition pattern 19 positioned on a straight line drawn along the width direction W. In one place, a plurality of position recognition patterns 19 having different intervals and lengths spaced apart may be disposed along the width direction W, thereby forming a predetermined width pattern along the width direction W. As shown in FIG. Such a predetermined width pattern can vary depending on the distance from the head portion 30 to the one point. Each width pattern can correspond to the distance from the head part 30 to the said location. Accordingly, the result of recognizing each width pattern is transmitted to the processor 58, so that the speed at which the flexible circuit board 10 is unrolled or wound up can not only be determined, but even when the power is removed and applied, the current entrance ( It can be seen how far the position of the flexible circuit board 10 located at 54 is from the head portion 30. That is, the processor 58 can grasp the position where the head part 30 is currently arrange | positioned even in the situation where the flexible circuit board 10 was stopped without being wound up or wound up.

Another embodiment

6 is an exploded view of a flexible circuit board 10 according to another embodiment of the present invention. 7 is a cross-sectional view of the flexible circuit board 10 and the recognition unit 60 of the inspection device 1 according to another embodiment of the present invention.

In another embodiment of the present invention, except for the position of the position recognition pattern 29, the rest is the same as the description for one embodiment. Therefore, only the differences with other embodiments will be described.

In another embodiment, the position recognition pattern 29 may be formed in the intermediate layer 181, not the upper layer 182 and the lower layer 183. The position recognition pattern 291 formed on one side and the position recognition pattern 292 formed on the other side along the width direction W may be arranged in line symmetry with respect to a straight line drawn along the longitudinal direction D. Therefore, when the position recognition pattern 29 is formed in the intermediate layer 181 using ink, the upper layer 182 or the lower layer 183 needs to be formed of a light transmitting material. Since the position recognition pattern 29 is not formed in the upper layer 182 and the lower layer 183, in another embodiment, the recognition unit 60 may include only the first recognition unit 61.

Another embodiment

8 is an exploded view of a flexible circuit board according to still another embodiment of the present invention. FIG. 9 is a cross-sectional view of a flexible circuit board and a recognition unit of a test apparatus according to another embodiment of the present invention.

Referring to the drawings, according to another embodiment of the present invention, the shield, the insulator or the through-hole is not formed, the signal line 71, the power line 72, the position recognition pattern 79 and the driving hole 75 The substrate 78 may be formed to form the flexible circuit board 70.

In another embodiment, the position recognition patterns 791 and 792 may be formed in regions adjacent to both ends along the width direction. The position recognition patterns of both ends are recognized by the first recognizing unit 61 disposed at a position corresponding to the corresponding position, so that the position and speed of the head portion located at the end of the flexible circuit board 70 can be grasped. Similarly, the driving protrusion 551 of the driving unit 55 may be inserted into the driving hole 75 to move the flexible circuit board 70.

In the above description, it is described that all the components constituting the embodiments of the present invention are combined or operated in one, but the present invention is not necessarily limited to these embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be inherent unless specifically stated otherwise, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1: Inspection device
10, 70: flexible circuit board
11, 71: signal line
12, 72: power line
13: auxiliary signal line
15, 75: driving hole
19, 29, 79: position recognition pattern
30: head part
31: recording device
32: lighting device
33: guide hole
40: Work Tool
50: body
51: interior space
52: bobbin
53: housing
54: doorway
55 drive unit
56: pocket
57: handwheel
58: processor
59: slip ring
60: recognition unit
61: first recognition unit
62: second recognition unit
63: auxiliary recognition unit
78: background
161: side signal line shield
162: upper signal line shield
163: lower signal line shield
164: Signal line plating through hole
171: side power line shield
172: upper power line shield
173: lower power line shield
174 power line plating through hole
181: middle layer
182: top layer
183: lower layer
191: position recognition pattern formed on the upper layer
191a: First position recognition pattern
191b: Second position recognition pattern
191b: Third position recognition pattern
191d: fourth position recognition pattern
192: position recognition pattern formed on the lower layer
291, 791: position recognition pattern formed on one side
292, 792: Position recognition pattern formed on the other side
531: Tops
532: side plate
533: bottom plate
551: driving protrusion
552: drive shaft member
553: driving body
554: auxiliary roller
571 knob
D: longitudinal direction
D1: first longitudinal direction
D2: second longitudinal direction
W: width direction

Claims (18)

A flexible substrate formed extending in the longitudinal direction;
A signal line disposed on the base body and configured to transmit data photographed by an imaging apparatus connected to one end of the base body based on the longitudinal direction;
A power line disposed on the base and configured to supply power to the photographing apparatus;
It includes a plurality of position recognition pattern is formed spaced apart at a predetermined interval along the longitudinal direction on the base body,
The position recognition pattern is disposed adjacent to both ends of the base body with respect to the width direction, which is one direction perpendicular to the length direction, so as to be symmetrical with each other based on a straight line drawn along the length direction,
The substrate has a laminated structure including a layer on which the position recognition pattern is formed and a layer formed of a light-transmissive material covering the layer on which the position recognition pattern is formed.
delete The method of claim 1,
The plurality of position recognition patterns,
A plurality of first position recognition patterns formed to be spaced apart at a first interval along the longitudinal direction, and a plurality of second position recognition patterns formed to be spaced apart at a second interval different from the first interval along the length direction; and,
And the first position recognition pattern and the second position recognition pattern are disposed at different positions along the width direction perpendicular to the longitudinal direction. The method of claim 3,
The length of the first position recognition pattern along the length direction is equal to the first interval,
The length of the said 2nd position recognition pattern is the same as the said 2nd space | interval. The method of claim 1,
The plurality of position recognition patterns,
A plurality of first position recognition patterns having a predetermined length along the length direction and spaced apart along the length direction, and spaced apart along the length direction along a length different from the predetermined length along the length direction; Includes a plurality of second position recognition pattern,
And the first position recognition pattern and the second position recognition pattern are disposed at different positions along the width direction perpendicular to the longitudinal direction. The method of claim 1,
The substrate is,
The signal line and the power line has a laminated structure including an intermediate layer, a lower layer disposed below the intermediate layer and an upper layer formed of a light-transmissive material and positioned above the intermediate layer.
The position recognition pattern is formed in the intermediate layer. The method of claim 1,
The substrate is,
It has a laminated structure including an intermediate layer in which the signal line and the power line is disposed, a lower layer located below the intermediate layer and an upper layer located above the intermediate layer,
The position recognition pattern is formed on at least one of the upper layer and the lower layer, the flexible circuit board. The method of claim 1,
The flexible circuit board in which the number which shows the distance from one end of the said base body to the one place on the said base body is formed like a scale in one place on the said base body. The method of claim 1,
The substrate is,
A side shielding body disposed on the left and right sides of the signal line and the power line with the intermediate insulator, the signal line, the power line, and the side insulator provided on the upper side of the intermediate insulator, and extending from one side to the other side of the base along the longitudinal direction; Intermediate layer provided;
A lower insulator and a lower shield stacked on an upper side of the lower insulator and provided at a position corresponding to the signal line, power line, and side shield, and extending from one side of the base body to the other side along the length direction; A lower layer located below the; And
An upper insulator and an upper shield stacked on an upper side of the upper insulator and provided at a position corresponding to the signal line, power line, and side shield, and extending from one side of the base body to the other side along the length direction; The upper layer located on the upper side of the laminated structure,
And the side shield, the lower shield, and the upper shield form a shield of a three-dimensional shape surrounding the signal line and the power line. A head unit having a photographing apparatus for photographing an image;
A signal line for transmitting data photographed by the photographing apparatus, a power line for supplying power to the photographing apparatus, and a plurality of position recognition patterns spaced apart at predetermined intervals along a longitudinal direction, wherein the head portion and A flexible circuit board having one end connected thereto;
A body to which the other end of the flexible circuit board is connected and which accommodates the flexible circuit board; And
A recognition unit arranged on the body and recognizing the position recognition pattern passing through a predetermined position, the recognition unit generating a signal on which the flexible circuit board can calculate the total unrolled length;
The position recognition patterns are disposed adjacent to both ends of the base body in the width direction, which is one direction perpendicular to the length direction, so as to be symmetrical with each other based on the straight line drawn along the length direction.
The substrate has a laminated structure including a layer on which the position recognition pattern is formed and a layer formed of a light-transmissive material covering the layer on which the position recognition pattern is formed. The method of claim 10,
Further comprising a drive unit for moving the flexible circuit board in a first longitudinal direction toward the front of the head portion or in a second longitudinal direction opposite to the first longitudinal direction,
The flexible circuit board further includes a plurality of driving holes formed at predetermined intervals along a length direction including the first length direction and the second length direction.
The drive unit is formed to protrude on the rotating cylindrical drive body, and the outer surface of the drive body is sequentially inserted into the drive hole in accordance with the rotation of the drive body to the flexible circuit board in the direction of rotation of the drive body Inspection device comprising a driving projection to move correspondingly. The method of claim 11,
The position recognition pattern is disposed adjacent to at least one end of both ends of the flexible circuit board on the basis of the width direction perpendicular to the longitudinal direction,
The driving hole is disposed in the center of the flexible circuit board with respect to the width direction. The method of claim 11,
The driving unit, the inspection apparatus further comprises an encoder for obtaining the number of rotations of the drive body. The method of claim 10,
The position recognition pattern is formed of a material containing a conductive ink,
The recognition unit includes a light emitting unit for irradiating light to the position recognition pattern to recognize the position recognition pattern, and a light receiving unit for recognizing the light reflected from the position recognition pattern. The method of claim 10,
The position recognition pattern is formed of a material containing a metal,
The recognition unit, the inspection apparatus including a metal detection sensor for detecting the metal contained in the position recognition pattern. The method of claim 10,
And a display unit for displaying an image converted from data transmitted by the photographing apparatus through a signal line. The method of claim 10,
And a processor configured to receive a signal generated by the recognition unit by recognizing the position recognition pattern, and calculate a position of the head unit based on the signal. The method of claim 10,
And a processor configured to receive a signal generated by the recognition unit by recognizing the position recognition pattern, and calculate a speed at which the head unit moves based on the signal.

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