Control circuit board suitable for endoscope lens module and assembling method

Abstract

The invention provides a control circuit board suitable for an endoscope lens module and an assembling method. The control circuit board comprises a flexible circuit board and a supporting piece. The supporting pieces comprise the first supporting piece, the second supporting piece and the third supporting piece. The flexible circuit board comprises a first side surface and a second side surface opposite to the first side surface; the first supporting piece, the second supporting piece and the third supporting piece are arranged on the second side face at intervals. The welding difficulty can be greatly reduced, the machining difficulty is greatly reduced, the production efficiency is improved, and assembly and later maintenance are easy.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to the field of endoscope lens unit technology. Background Technology

[0002] The market for flexible endoscopes is currently booming, with products becoming increasingly miniaturized. As the package size of the lens unit harness becomes below OD 2.0mm, the current standard technical solution involves attaching the LED to the side of the lens. This requires workers to vertically solder the wires to the lens pads, then to the LED, and finally attach the LED to the side of the lens.

[0003] The conventional technical solution involves attaching the LED to the side of the lens. This requires workers to vertically solder wires to the lens pads, then to the LED, and finally attach the LED to the side of the lens. However, this process has the following technical problems:

[0004] 1. Vertical welding requires high skill levels from employees. Employees need to undergo long-term training to master the welding skills. In the early stages of training, welding defects are prone to occur, resulting in a large number of scraps and high waste costs.

[0005] 2. The two LEDs are glued to the side of the lens. When glued manually, the LEDs may be deflected, tilted, asymmetrical, or misaligned.

[0006] 3. LEDs are bonded with adhesive, which is susceptible to high temperatures and corrosion. Furthermore, when maintaining the LEDs and lenses, the adhesive needs to be separated and removed, which can easily damage the solder joints, LEDs, and lenses, making maintenance difficult.

[0007] In view of this, the present invention is proposed.

[0008] Application content

[0009] This invention provides a control circuit board suitable for endoscope lens units, which can effectively reduce soldering difficulty, greatly reduce the difficulty of processing and production, and at the same time protect the circuit board and facilitate later maintenance.

[0010] A control circuit board for an endoscope lens unit includes a flexible circuit board, a lens unit, and a support member; the support member includes a first support member, a second support member, and a third support member.

[0011] The flexible circuit board includes a first side and a second side opposite to the first side; the second side is provided with a first support member, a second support member and a third support member at intervals; bending areas are provided between the first support member and the third support member and between the second support member and the third support member, and the bending areas are used to bend the flexible circuit board along different sides of the lens unit.

[0012] The first side surface includes a first welding area for welding the lens unit;

[0013] Therefore, the second side includes a second welding area for welding the first light source, a third welding area for welding the second light source, and a fourth welding area for welding the cable;

[0014] The first support member and the second support member are respectively located at both ends of the second side; the third support member is located in the central region of the second side.

[0015] The first support member, the second support member, and the third support member at least cover a portion of the circuitry on the flexible circuit board;

[0016] Furthermore, the first support member includes a pair of first grooves; the first grooves are respectively located on both sides of the first support member;

[0017] The second support member includes a pair of second grooves; the second grooves are respectively located on both sides of the second support member;

[0018] The lens unit includes two pairs of pillars; each pair of pillars is located on the sides of the lens unit.

[0019] Each pair of uprights includes a pair of elastic elements and a pair of protrusions located on the underside of the elastic elements; each pair of elastic elements is arranged opposite to each other; each pair of protrusions is arranged opposite to each other on the inner surface of the underside of the elastic elements; the protrusions respectively cooperate with the first groove and the second groove to form a limiting structure.

[0020] Furthermore, the first support member includes a first notch that exposes the second welding area, which is used for welding the first light source;

[0021] The second support includes a second notch that exposes the third welding area for welding the second light source;

[0022] The third support includes a third notch that exposes the fourth welding area for welding cables.

[0023] Furthermore, the first light source is an LED lamp; the second light source is an LED lamp; and the lens unit is a 6946 lens.

[0024] Furthermore, the first support member, the second support member, and the third support member are all made of rigid insulating material.

[0025] Furthermore, the first support member, the second support member, and the third support member are all made of resin.

[0026] On the other hand, the assembly method of the endoscope lens module based on the above-mentioned control circuit board includes the following steps:

[0027] Step S1: Lay the flexible circuit board flat: Lay the flexible circuit board with the second side facing upwards;

[0028] Step S2: Welding light source: Weld the first light source in the second welding area; weld the second light source in the third welding area;

[0029] Step S3: Support installation: The first support, the third support, and the second support are sequentially and spaced apart on the second side surface;

[0030] Step S3: Flip over: Flip the flexible circuit board so that the first side faces upward;

[0031] Step S4: Welding the lens unit: Weld the lens unit in the first welding area;

[0032] Step S5: Bending and fixing: Bending the flexible circuit board with the fixed support members toward the sides of the lens unit, and fixing the first support member and the second support member between the corresponding pair of elastic members.

[0033] Furthermore, in step S3, fixing the first support member, the third support member, and the second support member sequentially and at intervals on the second side includes: the first support member and the second support member are respectively disposed at both ends of the flexible circuit board; the third support member is disposed in the central region of the flexible circuit board.

[0034] Furthermore, in step S3, fixing the first support member, the third support member, and the second support member sequentially and at intervals on the second side includes: fixing the first support member, the second support member, and the third support member to the flexible circuit board by means of adhesive.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1) The present invention can first solder the light source onto the flat control circuit board, and then fix the light source to the side of the lens module by bending, which can greatly reduce the risk of installation misalignment and greatly reduce the difficulty of soldering.

[0037] 2) The present invention sets rigid support members on the flexible circuit board, which not only protects the circuit and circuit components, but also provides a certain rigidity to the flexible circuit board, which facilitates subsequent assembly.

[0038] 3) This invention replaces traditional adhesive bonding with a combination of elastic elements and protrusions, resulting in a stable and reliable connection that is easy to assemble and disassemble, and simple to maintain in the later stages. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a side view of the structure of the control circuit board in this embodiment;

[0041] Figure 2 This is a schematic diagram of the second side structure of the flexible circuit board in this embodiment;

[0042] Figure 3 This is a schematic diagram of the lens module structure in this embodiment;

[0043] Figure 4 This is a top view of the lens module in this embodiment;

[0044] Figure 5 This is a schematic diagram of the protrusion limiting mechanism in this embodiment;

[0045] Figure 6 This is a schematic diagram of the front lens module structure before the bending process in this embodiment;

[0046] Figure 7 This is a schematic diagram of the lens module structure after the bending process in this embodiment. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] Figure 1 A side view of the structure of the control circuit board in this embodiment is shown. Figure 1As shown, the control circuit board includes a flexible circuit board 10, a lens unit 30, and a support member 20; the support member 20 includes a first support member 201, a second support member 202, and a third support member 203. Furthermore, the flexible circuit board 10 includes a first side A and a second side B opposite to the first side A. The first support member 201, the second support member 202, and the third support member 203 are arranged at intervals on the second side B; wherein, the control circuit board is suitable for an endoscope lens module.

[0049] The first side surface A includes a first welding area (not shown in the figure) for welding the lens unit 30.

[0050] In this embodiment, the flexible circuit board 10 has a rectangular sheet structure, that is, both the first side A and the second side B are rectangular, each having a length and a width, and along its length, it has a first end and a second end. A first support member 201 is disposed at the first end of the second side B, and a second support member 202 is disposed at the second end of the second side B. A third support member 203 is disposed in the central region of the second side B. The second side of the flexible circuit board 10 includes a second welding area for welding a first light source (not shown in the figure), a third welding area for welding a second light source (not shown in the figure), and a fourth welding area for welding cables 70. Preferably, the support member 20 is made of a rigid insulating material, such as resin, or rigid plastic. Thus, the support member 20 provides good protection for the circuits and electrical components covered by it, improving the stability and reliability of the product.

[0051] like Figure 1 As shown, the first support member 201, the second support member 202, and the third support member 203 are arranged at intervals along the length of the flexible circuit board 10. That is, the flexible circuit board 10 has areas not covered by the support members 20, and the uncovered areas still have good flexibility, defining the bending area and facilitating the bending and fixing steps in subsequent assembly processes. Specifically, bending areas are provided between the first and third support members, and between the second and third support members. These bending areas are used to bend the flexible circuit board 10 along different sides of the lens unit 30. Preferably, the bending areas not covered by the support members 20 have few or no circuits or electrical components.

[0052] Figure 2 This is a top view of the second side of the flexible circuit board in this embodiment. Figure 2As shown, the first support member 201, the second support member 202, and the third support member 203 are sheet-like plates. On the second side surface B, the first support member 201, the second support member 202, and the third support member 203 respectively have a first notch 401, a second notch 402, and a third notch 403, exposing the second welding area, the third welding area, and the fourth welding area. That is, the second welding area, the third welding area, and the fourth welding area on the second side surface of the flexible circuit board 10 are exposed from the support member 20. Wherein, the first support member 201, the second support member 202, the third support member 203 are sheet-like plates. The support member 202 is roughly U-shaped, and the third support member 203 is roughly U-shaped to form the aforementioned notch; a portion of the outline of the first support member 201 coincides with the length of the first end of the flexible circuit board 10, and the first notch 401 is located in the middle of the width of the first end; a portion of the outline of the second support member 202 coincides with the length of the second end of the flexible circuit board 10, and the second notch 402 is located in the middle of the width of the second end; a portion of the outline of the third support member 203 coincides with the length of the central region of the flexible circuit board 10.

[0053] In this embodiment, the shape of the first notch 401 matches the shape of the first light source, the shape of the second notch 402 matches the shape of the second light source, and the shape of the third notch 403 matches the shape of the cable 70. Preferably, the first notch 401, the second notch 402, and the third notch 403 are all rectangular structures, but they are not limited to this, and their specific shapes are not specifically limited here. The matching of shapes allows the notches of the support member to further limit and fix the first light source, the second light source, and the cable 70, further ensuring their service life.

[0054] A first welding area is arranged on the first side A for welding the lens unit.

[0055] See you again Figure 2 The support member 20 has a groove unit 50. Similarly, the flexible circuit board 10 is also provided with a groove of a matching shape at the position corresponding to the groove unit 50. The groove unit 50 includes a pair of first grooves 501 and a pair of second grooves 502. The pair of first grooves 501 are located on two opposite lengths at the first end of the flexible circuit board 10, and the pair of second grooves 502 are located on two opposite lengths at the second end of the flexible circuit board 10.

[0056] Figure 3 A schematic diagram of the lens module in this embodiment is shown. Figure 4 This shows a top view of the lens module in this embodiment. Figure 3-4As shown, in this embodiment, the lens unit 30 is rectangular in shape and has four sides: a first side, a second side, a third side, and a fourth side. The first and third sides are arranged opposite each other and are the longer sides, while the second and fourth sides are arranged opposite each other and are the shorter sides. The lens unit 30 includes two pairs of pillars 60, each pair of pillars 60 being located on one of the two sides of the lens unit 30. Preferably, each pair of pillars 60 is located on two of the longer sides, namely the first side and the third side. Figure 4 for Figure 3 A bottom view (following the direction of arrow C), as shown... Figure 4 As shown, a U-shaped clamping portion is formed between each pair of uprights for clamping the flexible circuit board 10, the first support member, and the second support member, respectively. Each pair of uprights includes a pair of elastic members 601 and a pair of sidewalls. The pair of sidewalls are arranged opposite to each other, and the elastic members 601 are disposed on the inner sides of the two sidewalls of the U-shaped clamping portion, and the pair of elastic members 601 are arranged opposite to each other. Preferably, the elastic member 601 is a protrusion.

[0057] See also Figure 4 Each pair of pillars 60 further includes a pair of protrusions 602 located below the elastic member 601. The pair of protrusions 602 are respectively located on the inner sides of the two side walls and are arranged opposite to each other. The protrusions 602 cooperate with the first groove and the second groove to form a limiting structure, restricting the movement of the flexible circuit board 10, the first support member and the second support member along the length direction of the sides of the lens unit 30. The elastic member 601 and the protrusions 602 can completely fix the flexible circuit board 10, the first support member and the second support member to the sides of the lens unit 30, and are easy to install, disassemble and maintain.

[0058] During the bending and fixing step of the assembly, the flexible circuit board 10 moves in the direction of arrow D, and makes a "click" sound after passing the elastic element 601, indicating that the flexible circuit board 10 has reached its set point. Figure 4 At the position indicated by the dashed line, the protrusion 602 falls into the first groove 501 and the second groove 502 of the support member (as shown by the dashed line). Figure 5 (As shown).

[0059] Preferably, in this embodiment, the elastic element 601 is semi-circular, and the protrusion 601 is a cuboid structure.

[0060] Preferably, the first light source is an LED lamp; the second light source is an LED lamp; and the lens module is a 6946 lens.

[0061] On the other hand, this embodiment also provides an assembly method for an endoscope lens module based on the above-mentioned control circuit board, including the following steps:

[0062] Step S1: Lay out the flexible circuit board 10: Lay out the flexible circuit board 10 with the second side B facing upwards;

[0063] Step S2: Welding light source: Weld the first light source in the exposed second welding area; weld the second light source in the exposed third welding area;

[0064] Step S3: Support installation: Fix the first support 201, the third support 202, and the second support 203 sequentially and at intervals on the second side;

[0065] Preferably, the first support member 201 and the second support member 202 are respectively disposed at both ends of the flexible circuit board 10; the third support member 203 is disposed in the central area of ​​the flexible circuit board 10.

[0066] Step S3: Flip over: Flip the flexible circuit board 10 so that the first side A faces upward;

[0067] Step S4: Welding the lens unit: Weld the lens unit 30 in the first welding area;

[0068] Step S5: Bending and Fixing: Bend the flexible circuit board with the support member 20 fixed to both sides of the lens unit 30 until a "click" sound is heard (e.g., Figure 6 (As shown).

[0069] Figure 6 and Figure 7 The diagrams show the structural schematics of the endoscope lens module before and after the bending process. For example... Figure 6-7 As shown, the area not covered by the support defines the bending area, thus standardizing the assembly.

[0070] Preferably, the first support member, the second support member, and the third support member are fixedly connected to the flexible circuit board by adhesive bonding.

[0071] The terms "equal," "identical," or "equal to" disclosed in this application must take into account the parameter distribution of the engineering process, with an error distribution within ±30%. "Parallel" two line segments or lines are defined as having an included angle of less than or equal to 45 degrees. "Perpendicular" two line segments or lines are defined as having an included angle within the range of [60, 120] degrees. The definition of "phase misalignment" also takes into account the parameter distribution of the engineering process, with an error distribution of the phase misalignment degree within ±30%. Furthermore, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control circuit board for an endoscope lens module, characterized in that, The flexible circuit board, the lens unit and the support; The support comprises a first support, a second support and a third support; The flexible circuit board comprises a first side and a second side opposite to the first side; the first support, the second support and the third support are arranged on the second side in intervals; a bending area is arranged between the first support and the third support and between the second support and the third support, and the bending area is used for bending the flexible circuit board along different sides of the lens unit; The first side comprises a first welding area for welding the lens unit; Therefore, the second side comprises a second welding area for welding the first light source, a third welding area for welding the second light source and a fourth welding area for welding the cable; The first support and the second support are respectively located at two ends of the second side; and the third support is located at a central region of the second side; The first support, the second support and the third support cover at least part of the circuit on the flexible circuit board.

2. The control circuit board suitable for the endoscope lens module according to claim 1, wherein The first support comprises a pair of first grooves; the first grooves are respectively located at two sides of the first support; The second support comprises a pair of second grooves; the second grooves are respectively located at two sides of the second support; The lens unit comprises two pairs of columns; each pair of columns is respectively located at a side of the lens unit; Each pair of columns comprises a pair of elastic members and a pair of protrusions located at the inner surface of the lower side of the elastic members; the elastic members are oppositely arranged; the protrusions are oppositely arranged on the inner surface of the lower side of the elastic members; the protrusions are matched with the first grooves and the second grooves to form a limiting structure.

3. The control circuit board suitable for the endoscope lens module according to claim 1, wherein The first support comprises a first notch, and the first notch exposes the second welding area for welding the first light source; The second support comprises a second notch, and the second notch exposes the third welding area for welding the second light source; The third support comprises a third notch, and the third notch exposes the fourth welding area for welding the cable.

4. The control circuit board suitable for the endoscope lens module according to claim 1, wherein The first light source is an LED lamp; the second light source is an LED lamp; and the lens unit is a 6946 lens.

5. The control circuit board for endoscope lens module according to claim 1, wherein The first support, the second support and the third support are all made of hard insulating material.

6. The control circuit board suitable for the endoscope lens module according to claim 5, wherein The first support, the second support and the third support are all made of resin.

7. An assembling method of an endoscope lens module including the control circuit board according to any one of claims 1 to 6, characterized by, The method comprises the following steps: Step S1: laying the flexible circuit board: lay the flexible circuit board with the second side facing upwards; Step S2: welding light source: welding the first light source on the second welding area; welding the second light source on the third welding area; Step S3: support installation: sequentially and intervally fixing the first support, the third support and the second support on the second side; Step S3: turn over: turning over the flexible circuit board so that the first side faces upward; Step S4: welding lens unit: welding the lens unit on the first welding area; Step S5: bending and fixing: bending the flexible circuit board with the supports fixed thereon toward two sides of the lens unit, and fixing the first support and the second support between the corresponding pair of elastic members respectively.

8. The assembly method of claim 7, wherein, in the step S3, sequentially and intervally fixing the first support, the third support and the second support on the second side includes: respectively arranging the first support and the second support at two ends of the flexible circuit board; and arranging the third support at a central region of the flexible circuit board.

9. The assembly method of claim 7, wherein, in the step S3, sequentially and intervally fixing the first support, the third support and the second support on the second side includes: fixedly connecting the first support, the second support and the third support to the flexible circuit board by means of gluing.

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