PCB (Printed Circuit Board), endoscope camera assembly applied by PCB and endoscope

Abstract

According to the PCB, the endoscope camera assembly applying the PCB and the endoscope, the electric connection parts are arranged in two rows in the PCB with the extremely small size, electronic elements are arranged in the middle, the design can effectively achieve miniaturization and integration design, thin-diameter development of the endoscope camera module is facilitated, and the application range of the endoscope camera module is widened. The endoscope camera assembly comprises a camera module, a PCB, a coaxial line and a positioning wire clamp, the positioning wire clamp is arranged between the coaxial line and the PCB, and the positioning wire clamp is provided with a plurality of threading holes correspondingly communicated with electric connection parts on the PCB. A plurality of core wires on the coaxial line can sequentially penetrate through a plurality of threading holes to be electrically connected with a plurality of core wires on the PCB in a one-to-one alignment manner and corresponding electric connecting parts on the PCB, so that the welding difficulty is reduced, automatic welding processing is convenient to realize, the labor intensity of workers in the production process of the endoscope camera assembly can be effectively reduced, and the production efficiency of the endoscope camera assembly is improved. The production efficiency of the endoscope camera assembly is improved, and the endoscope camera assembly has a good application prospect.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, and in particular to a PCB board and its application in endoscope camera assembly and endoscope. Background Technology

[0002] As a high-end medical device, the electronic endoscope works by inserting a sheath into the body's natural cavities using a handpiece. The endoscope then uses a front-end optical lens module to collect images of internal organs, providing doctors with intuitive diagnostic information. Due to the unique nature of its function and application scenarios, the diameter of the endoscope sheath tip needs to be as small as possible, posing new challenges to the technological innovation of the optical lens module.

[0003] Existing electronic endoscope camera modules have multiple independent coaxial cable cores connected to the tail control unit. In actual endoscope production, these multiple coaxial cable cores are manually soldered one by one onto the PCB board of the camera module. However, due to the small size of endoscope camera modules, generally only about 2 to 3 mm in diameter, the solder joints are extremely small and closely spaced. In addition, the layout on the PCB board is unreasonable, which greatly increases the difficulty of manual soldering, resulting in high labor intensity, high cost, low production efficiency, and hindering miniaturization. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a PCB board in which electrical connection parts are arranged in two rows and electronic components are placed in the middle within a very small PCB board. This design can effectively realize miniaturization and integration, which is conducive to the development of finer diameter endoscope camera modules.

[0005] A PCB board is used in an endoscope, the endoscope including at least a coaxial line, the coaxial line including multiple core wires, the PCB board having multiple electrical connection parts arranged to electrically connect the multiple core wires respectively, the multiple electrical connection parts being arranged in two spaced rows on the PCB board, and the PCB board having an mounting area for mounting electronic components between the two rows of electrical connection parts.

[0006] As described above, in the PCB board, two rows of electrical connection portions are arranged side by side along the length of the PCB board.

[0007] As described above, the two columns of electrical connection parts are respectively arranged on the side of the PCB board.

[0008] As described above, the side of the PCB board away from the electrical connection portion is the camera module mounting surface.

[0009] As described above, the camera module includes a lens and an image sensor. The image sensor can be adapted and assembled onto the PCB board via SMT (Surface Mount Technology), and the lens is assembled onto the PCB board via adhesive bonding.

[0010] The PCB board described above has the following dimensions: length 2.6-3.0mm, width 2.0-2.5mm.

[0011] As described above, the PCB board has a positioning clamp on the side near the electrical connection part, and the positioning clamp has a plurality of through holes corresponding to and communicating with the electrical connection part.

[0012] Multiple core wires can be sequentially and adaptably passed through multiple wire holes and electrically connected to the corresponding electrical connection parts one by one.

[0013] As described above, in the PCB board, the positioning clamp has a chamfered portion near the edge of the electrical connection part that is inclined and communicates with the wire hole;

[0014] After the end of the core wire passes through the wire hole, it is bent and extended to the chamfered portion to be aligned and welded with the electrical connection portion.

[0015] As described above, the positioning clamp has an inwardly recessed relief groove on the side near the mounting area to accommodate the electronic components.

[0016] This application also provides an endoscope camera assembly, which includes at least a camera module, a coaxial cable, and the aforementioned PCB board. One side of the PCB board is electrically connected to the camera module, and a plurality of the aforementioned electrical connection portions are arranged on the other side.

[0017] The third objective of this application is to provide an endoscope, including the aforementioned endoscope camera assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This application provides a PCB board in which electrical connections are arranged in two rows within a very small PCB board, with electronic components placed in the middle. This design effectively achieves miniaturization and integration, which is beneficial for the development of smaller diameter endoscope camera modules.

[0020] This application also provides an endoscope camera assembly and an endoscope for its application. The endoscope camera assembly includes a camera module, a PCB board, a coaxial cable, and a positioning clamp. By setting a positioning clamp between the coaxial cable and the PCB board, and having multiple through holes on the positioning clamp corresponding to the electrical connection parts on the PCB board, before soldering, multiple core wires on the coaxial cable can be pre-positioned by passing through the multiple through holes and corresponding to the electrical connection parts on the PCB board, which facilitates the alignment and electrical connection between the core wires and the electrical connection parts. Then, the multiple core wires on the coaxial cable are aligned and electrically connected to the corresponding electrical connection parts on the PCB board one by one. This design reduces the soldering difficulty and facilitates automated soldering, which can effectively reduce the manual labor intensity in the production process of the endoscope camera assembly and improve the production efficiency of the endoscope camera assembly, and has good application prospects. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an endoscope camera assembly according to an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of an endoscope camera assembly according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a positioning clamp in an embodiment of the present utility model;

[0024] Figure 4 This is a structural schematic diagram of a positioning wire clamp from another perspective in an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of a PCB board according to an embodiment of the present utility model;

[0026] Figure 6 This is a schematic diagram of the structure of an endoscope camera assembly applied to an endoscope according to an embodiment of the present invention. Detailed Implementation

[0027] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] An endoscope camera assembly includes a camera module 1, a PCB board 2, a coaxial cable 3, and a positioning clamp 4. One side of the PCB board 2 is electrically connected to the camera module 1, and the other side has multiple electrical connection parts 21. The coaxial cable 3 includes multiple core wires 31 that can be electrically connected to the multiple electrical connection parts 21 respectively. The positioning clamp 4 is located on the side of the PCB board 2 near the electrical connection parts 21, and has multiple through holes 41 that are connected to the electrical connection parts 21 respectively. The multiple core wires 31 can pass through the multiple through holes 41 in sequence and be electrically connected to the corresponding electrical connection parts 21 one by one.

[0029] The endoscope camera assembly of this application includes a camera module, a PCB board, a coaxial cable, and a positioning clamp. The positioning clamp is located between the coaxial cable and the PCB board, and has multiple through holes corresponding to electrical connection parts on the PCB board. Before soldering, multiple core wires on the coaxial cable can be pre-positioned by passing through the multiple through holes to the corresponding electrical connection parts on the PCB board, facilitating alignment and electrical connection between the core wires and the electrical connection parts. Then, the multiple core wires on the coaxial cable are aligned and electrically connected to the corresponding electrical connection parts on the PCB board one by one. This design reduces the difficulty of soldering and facilitates automated soldering, effectively reducing the manual labor intensity in the production process of the endoscope camera assembly and improving the production efficiency of the endoscope camera assembly, showing great application potential.

[0030] In this embodiment of the PCB board, two rows of electrical connection portions 21 are arranged side by side on the surface of the PCB board away from the camera module. The mounting area 20 for mounting electronic components 22 is located between the two rows of electrical connection portions 21 on the PCB board 2. In specific applications, multiple electrical connection portions 21 are solder pads on the PCB, and electronic components 22 are capacitors. This application optimizes the structure of the PCB board 2, placing solder pads in two rows and placing capacitors in the middle within the extremely small PCB board 2. This design can effectively realize miniaturization and integration, which is conducive to the development of finer diameter endoscope camera modules.

[0031] The positioning clamp of this application embodiment has multiple through holes that correspond to and communicate with electrical connection parts on the PCB board. Before soldering, multiple core wires on the coaxial line can be pre-positioned by passing through the multiple through holes and corresponding electrical connection parts on the PCB board, which facilitates the alignment and electrical connection between the core wires and the electrical connection parts. Then, the multiple core wires on the axis are aligned and electrically connected to the corresponding electrical connection parts on the PCB board one by one. This design reduces the soldering difficulty and facilitates automated soldering, which can effectively reduce the manual labor intensity in the production process of endoscope camera components and improve the production efficiency of endoscope camera components, and has good application prospects.

[0032] In a preferred embodiment, the positioning clamp 4 is provided with two rows of wire holes 41 arranged side by side. More preferably, the two rows of wire holes 41 are arranged side by side along the length of the positioning clamp 4 and are located near the side of the positioning clamp 4. The positioning clamp 4 is provided with an inwardly recessed relief groove 42 near the mounting area 20 to make way for the electronic component 22. The size and shape of the clamp device are adjusted according to the PCB board design to avoid capacitors. The clamp device is designed to avoid capacitor positions and is arranged to fix the coaxial line.

[0033] As a further limitation, the number of the wire holes 41 is 10-14. In a specific embodiment of this application, the wire clamp device has 11 wire holes corresponding to the coaxial line, which can fix the wire sequence. The multiple core wires of the coaxial line are used for different signal connections of the endoscope camera module. The multiple core wires are connected one-to-one with the multiple rows of conductive connection parts to facilitate the transmission of signals, etc. The number of core wires can be designed and selected according to the model and usage requirements of the endoscope camera module, and is not specifically limited in this application.

[0034] As a further preferred embodiment, the positioning clamp 4 has a chamfered portion 43 that is inclined and communicates with the wire hole 41 near the edge of the electrical connection part 21; after the end of the core wire 31 passes through the wire hole 41, it bends and extends to the chamfered portion 43 to be aligned and welded with the electrical connection part 21. This optimized design facilitates welding, enables automated processing, effectively reduces the manual labor intensity in the production process of endoscope camera components, and improves the production efficiency of endoscope camera components.

[0035] As a further preferred embodiment, the diameter of the through hole 41 is adapted to the outer diameter of the core wire 31, and the core wire 31 is fixed in the through hole 41 with UV adhesive; the core wire 31 and the electrical connection part 21 are laser welded together. The coaxial cable is threaded onto the wire clamp and fixed to a special fixture of a special equipment with UV adhesive. The wire clamp and PCB pads are aligned and overlapped, solder is applied to the pads, and then laser welding is performed. This design reduces the welding difficulty, eliminates the need for manual welding of each wire, and reduces the cost of the endoscope.

[0036] As a further limitation, the side of the PCB board 2 away from the electrical connection part 21 is the mounting surface of the camera module 1. The dimensions of the PCB board 2 are: length 2.6-3.0mm, width 2.0-2.5mm. The camera module 1 includes a lens 11 and an image sensor 12. The image sensor 12 is SMT mounted on the PCB board 2, and the lens 11 is glued to the PCB board 2. In this application, the camera module is mounted on one side of the PCB board, and a coaxial cable is connected to the other side. This design reduces the size of the camera module and is conducive to the development of smaller diameter endoscope camera modules.

[0037] Furthermore, the coaxial cable 3 includes the core wire 31, a coaxial insulating outer sheath covering the core wire 31, and a coaxial shielding outer sheath covering the coaxial insulating outer sheath, such as... Figure 6 As shown, at the other end of the coaxial cable 3 connected to the PCB, multiple core wires 31 are electrically connected to the test module.

[0038] The welding process for an endoscope camera assembly according to one embodiment of this application includes the following steps:

[0039] S1: Pass the multiple core wires 31 of the coaxial cable 3 through the wire holes 41 on the positioning clamp 4 in sequence and fix them;

[0040] S2: Align the wire hole 41 on the positioning clamp 4 with the electrical connection part 21 on the PCB board 2;

[0041] S3: Connect the end of the core wire 41 to the electrical connection part 21.

[0042] To improve assembly efficiency, as a further preferred option, before the coaxial cable passes through the positioning clamp, the outer sheath of the coaxial cable 3 can be stripped by machine to expose the multiple core wires 41 of the coaxial cable 3. Then, the core wires are manually passed through the wire holes in sequence, and UV glue is applied to fix the core wires to the positioning clamp. After that, the outer sheath of the core wire 31 is stripped to expose the conductor at the end of the core wire 31, and the wire is cut.

[0043] As a further definition, the step of "electrically connecting the end of the core wire 41 to the electrical connection portion 21" specifically includes: applying solder to multiple electrical connection portions 21, and welding the end of the core wire 41 to the electrical connection portion 21 by laser welding process. This step can be performed on an automatic welding machine. This application can automatically strip wires, cut wires, apply solder, perform laser welding, and seal with glue. Automatic welding can improve welding efficiency, reduce costs, and promote the use of disposable endoscopes.

[0044] This application provides an endoscope, including the aforementioned endoscope camera assembly, which reduces welding difficulty and facilitates automated welding processing. It can effectively reduce the manual labor intensity in the production process of the endoscope camera assembly, improve the production efficiency of the endoscope camera assembly, and has good application prospects.

[0045] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A PCB board (2) for use in an endoscope, the endoscope comprising at least a coaxial cable (3), the coaxial cable (3) comprising a plurality of core wires (31), characterized in that, The PCB board (2) has multiple electrical connection parts (21) that can respectively connect multiple core wires (31). The multiple electrical connection parts (21) are arranged in two rows on the PCB board (2) with intervals. The PCB board (2) between the two rows of electrical connection parts (21) is the mounting area (20) for mounting electronic components (22).

2. The PCB board (2) according to claim 1, characterized in that: The two rows of electrical connection parts (21) are arranged side by side along the length of the PCB board (2).

3. The PCB board (2) according to claim 1 or 2, characterized in that: The two rows of electrical connection parts (21) are respectively arranged on the side of the PCB board (2).

4. The PCB board (2) according to claim 1, characterized in that: The side of the PCB board (2) away from the electrical connection part (21) is the mounting surface of the camera module (1). The camera module (1) includes a lens (11) and an image sensor (12). The image sensor (12) can be adapted and assembled onto the PCB board (2) by SMT patch, and the lens (11) is assembled onto the PCB board (2) by adhesive bonding.

5. The PCB board (2) according to claim 1, characterized in that: The dimensions of the PCB board (2) are: length 2.6-3.0mm, width 2.0-2.5mm.

6. The PCB board (2) according to claim 1, characterized in that: The PCB board (2) is provided with a positioning clamp (4) on the side near the electrical connection part (21), and the positioning clamp (4) is provided with a plurality of wire holes (41) corresponding to and communicating with the electrical connection part (21). Multiple core wires (31) can be sequentially adapted to pass through multiple wire holes (41) and be electrically connected to the corresponding electrical connection parts (21) one by one.

7. The PCB board (2) according to claim 6, characterized in that: The positioning clamp (4) has a chamfered part (43) that is inclined and connected to the wire hole (41) near the edge of the electrical connection part (21). After the end of the core wire (31) passes through the wire hole (41), it is bent and extended to the chamfered part (43) to be aligned and welded with the electrical connection part (21).

8. The PCB board (2) according to claim 6, characterized in that: The positioning clamp (4) has an inwardly recessed relief groove (42) on the side near the mounting area (20) to make room for the electronic component (22).

9. An endoscope camera assembly, characterized in that, It includes at least a camera module (1), a coaxial cable (3) and the PCB board (2) of any one of claims 1-8, wherein the camera module (1) is electrically connected on one side of the PCB board (2) and a plurality of electrical connection parts (21) are arranged on the other side.

10. An endoscope, characterized in that, Includes the endoscope camera assembly as described in claim 9.

Images