Endoscope camera assembly, welding process thereof and endoscope

Abstract

The invention provides an endoscope camera assembly, a welding process thereof and an endoscope, 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, the positioning wire clamp is provided with a plurality of threading holes correspondingly communicated with electric connection parts on the PCB, and before welding, the coaxial line is connected with the PCB through the threading holes. The plurality of core wires on the coaxial line can sequentially pass through the plurality of threading holes to be pre-positioned with the corresponding electric connection parts on the PCB, so that the core wires and the electric connection parts can be aligned and electrically connected conveniently, and then the plurality of core wires on the coaxial line are aligned and electrically connected with the corresponding electric connection parts on the PCB one by one, so that the welding difficulty is reduced, and the welding efficiency is improved. And automatic welding machining can be conveniently achieved, the labor intensity of workers in the production process of the endoscope camera assembly can be effectively reduced, the production efficiency of the endoscope camera assembly is improved, and good application prospects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to an endoscope camera assembly and a welding process thereof, and an endoscope. Background Art

[0002] As a high-end medical device, the main working principle of electronic endoscope is to control the front end sheath tube to enter the natural cavity of the human body through the handle, collect image information of organs in the human body through the front end optical lens module, and provide doctors with intuitive diagnostic information. Due to the uniqueness of its functions and application scenarios, the front end diameter of the endoscope sheath tube is required to be as small as possible, which poses new challenges to the process innovation of the optical lens module.

[0003] With the development trend of the domestic endoscope industry market in my country, reusable endoscopes have a high risk of cross-infection and high sterilization costs, so disposable endoscopes will inevitably become the mainstream products in the future. However, if disposable endoscopes are to be formally promoted, their costs must be reduced.

[0004] The existing electronic endoscope camera module has multiple coaxial wires with independent signal connections connected to the tail control unit. In the actual production process of endoscopes, the multiple coaxial wires are welded one by one on the PCB board of the camera module by manual welding. However, due to the small size of the endoscope camera module, which is generally only about 2 to 3 mm in size, the welding point size is extremely small and the welding point spacing is close, which greatly increases the difficulty of manual welding operation, high labor intensity, high cost and low production efficiency.

[0005] Therefore, providing an endoscope camera module that reduces welding difficulty and improves production efficiency is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an endoscope camera assembly, which reduces the difficulty of welding 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 a good application prospect.

[0007] An endoscope camera assembly, comprising: Camera module; A PCB board, one side of which is electrically connected to the camera module, and the other side of which is provided with a plurality of electrical connection parts; A coaxial line, comprising a plurality of core wires which can be respectively and correspondingly electrically connected to a plurality of the electrical connection parts; A positioning wire clamp, which is arranged on a side of the PCB board close to the electrical connection part and is provided with a plurality of threading holes corresponding to and connected with the electrical connection part; The plurality of core wires can pass through the plurality of threading holes in sequence and be electrically connected to the corresponding electrical connection parts one by one.

[0008] In the endoscope camera head assembly as described above, two rows of electrical connection parts arranged side by side are arranged on the surface of the PCB board away from the camera module, and two rows of threading holes are correspondingly arranged side by side on the positioning wire clamp.

[0009] In the endoscope camera assembly as described above, the PCB board located between the two rows of electrical connection parts is a mounting area for mounting electronic components; The side of the positioning wire clamp close to the installation area is provided with a recessed groove recessed inwardly for making way for the electronic component.

[0010] In the endoscope camera head assembly as described above, the edge of the positioning wire clamp close to the electrical connection portion is provided with an oblique chamfered portion connected to the threading hole; After the end of the core wire passes through the threading hole, it is bent and extended to the chamfered portion to be welded with the electrical connection portion.

[0011] In the endoscope camera assembly as described above, the diameter of the threading hole is adapted to the outer diameter of the core wire, and the core wire is fixed in the threading hole by UV glue; and / or The core wire and the electrical connection portion are welded by laser.

[0012] As described above, in the endoscope camera assembly, the camera module includes a lens and an image sensor, the image sensor SMT patch is assembled to the PCB board, and the lens is assembled to the PCB board by gluing.

[0013] Another object of the present application is a welding process for an endoscope camera assembly, comprising the following steps: Pass multiple core wires of the coaxial line through the threading holes on the positioning wire clamp in sequence and fix them; Align the threading hole on the positioning wire clamp with the electrical connection part on the PCB board; The end of the core wire is electrically connected to the electrical connection portion.

[0014] The welding process of the endoscope camera assembly as described above further includes the following steps: Strip the outer sheath of the coaxial cable to expose the multiple core wires of the coaxial cable; Strip the outer sheath of the core wire to expose the conductor at the end of the core wire.

[0015] In the welding process of the endoscope camera assembly as described above, the step of "electrically connecting the end of the core wire to the electrical connection portion" specifically includes: Spot tinning is performed on multiple electrical connection parts, and the ends of the core wires are welded to the electrical connection parts by a laser welding process.

[0016] The third object of the present application is to provide an endoscope, comprising the above-mentioned endoscope camera assembly.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present application provides an endoscope camera assembly, a welding process thereof and an endoscope. The endoscope camera assembly includes a camera module, a PCB board, a coaxial line and a positioning wire clamp. A positioning wire clamp is provided between the coaxial line and the PCB board, and a plurality of threading holes corresponding to the electrical connection parts on the PCB board are opened on the positioning wire clamp. Before welding, a plurality of core wires on the coaxial line can first be passed through the plurality of threading holes in sequence to be pre-positioned with the corresponding electrical connection parts on the PCB board, so as to facilitate the alignment and electrical connection between the core wires and the electrical connection parts, and then the plurality of core wires on the axis line are aligned and electrically connected with the corresponding electrical connection parts on the PCB board one by one. This design reduces the difficulty of welding and facilitates the realization of 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 a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an endoscope camera assembly according to an embodiment of the present invention; Figure 2 It is an exploded schematic diagram of an endoscope camera assembly according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a positioning wire clamp in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a positioning wire clamp in another perspective in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a PCB board in an embodiment of the present invention; Figure 6 The figure is a schematic structural diagram of an endoscope camera head assembly applied to an endoscope in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] An endoscope camera head assembly includes a camera module 1, a PCB board 2, a coaxial line 3, and a positioning wire clamp 4; one side of the PCB board 2 is electrically connected to the camera module 1, and the other side is arranged with multiple electrical connection parts 21; the coaxial line 3 includes multiple core wires 31 that can be respectively electrically connected to the multiple electrical connection parts 21; the positioning wire clamp 4 is arranged on one side of the PCB board 2 close to the electrical connection part 21, and is provided with multiple threading holes 41 corresponding to the electrical connection parts 21; the multiple core wires 31 can pass through the multiple threading holes 41 in turn, and be electrically connected to the corresponding electrical connection parts 21 one by one.

[0021] The endoscope camera assembly in the embodiment of the present application includes a camera module, a PCB board, a coaxial line, and a positioning wire clamp. A positioning wire clamp is arranged between the coaxial line and the PCB board, and a plurality of threading holes corresponding to the electrical connection parts on the PCB board are opened on the positioning wire clamp. Before welding, the multiple core wires on the coaxial line can first pass through the multiple threading holes in turn and be pre-positioned with the corresponding electrical connection parts on the PCB board, so as to facilitate the alignment and electrical connection between the core wires and the electrical connection parts, and then the multiple core wires on the axis are aligned and electrically connected with the corresponding electrical connection parts on the PCB board one by one. This design reduces the difficulty of welding and facilitates the realization of 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 a good application prospect.

[0022] The positioning wire clamp of the embodiment of the present application is provided with a plurality of threading holes corresponding to the electrical connection parts on the PCB board. Before welding, the multiple core wires on the coaxial line can first pass through the multiple threading holes in turn to be pre-positioned with the corresponding electrical connection parts on the PCB board, so as to facilitate the alignment and electrical connection between the core wires and the electrical connection parts, and 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 difficulty of welding and facilitates the realization of automated welding processing. It 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. It has a good application prospect.

[0023] The PCB board 2 of the embodiment of the present application has two rows of electrical connection parts 21 arranged side by side on the surface of the PCB board 2 away from the camera module 1, and the installation area 20 for installing electronic components 22 is located between the two rows of electrical connection parts 21 on the PCB board 2. In specific applications, multiple electrical connection parts 21 are soldering pads on the PCB, and the electronic components 22 are capacitors. The present application optimizes the structure of the PCB board 2, and the soldering pads in the extremely small PCB board 2 are arranged in two rows, and the capacitors are placed in the middle. This design can effectively realize miniaturization and integrated design, which is conducive to the thin-diameter development of the endoscope camera module.

[0024] As a preferred embodiment, the positioning wire clamp 4 is provided with two rows of threading holes 41 correspondingly arranged side by side. Further preferably, the two rows of threading holes 41 are arranged side by side along the length direction of the positioning wire clamp 4 and are arranged close to the side of the positioning wire clamp 4. The positioning wire clamp 4 is provided with a recessed groove 42 close to the installation area 20 for making way for the electronic component 22. The size and shape of the wire clamp device are adjusted according to the PCB board design and avoid the capacitor device. The wire clamp device is designed to avoid the capacitor position and arrange the fixed coaxial line.

[0025] As a further limitation, the number of the threading holes 41 is 10-14. In the specific embodiment of the present application, the wire clamp device has 11 threading holes corresponding to the coaxial line, which can fix the line 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 to the multiple rows of conductive connecting parts one by one, which is convenient for 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 the present application.

[0026] As a further preferred embodiment, the positioning wire clamp 4 is provided with a chamfered portion 43 which is oblique and connected to the threading hole 41 near the edge of the electrical connection portion 21; after the end of the core wire 31 passes through the threading hole 41, it is bent and extended to the chamfered portion 43 to be welded to the electrical connection portion 21. This design optimizes the structure, facilitates welding, and facilitates automated processing. It can effectively reduce the labor intensity in the production process of the endoscope camera assembly and improve the production efficiency of the endoscope camera assembly.

[0027] As a further preferred embodiment, the diameter of the threading hole 41 is adapted to the outer diameter of the core wire 31, and the core wire 31 is fixed in the threading hole 41 by UV glue; the core wire 31 and the electrical connection portion 21 are laser welded. The coaxial line is passed through the wire clamp and fixed to a special jig of a special device by UV glue, the wire clamp and the PCB pad are aligned and overlapped, and then tinned to the pad and then laser welded. This design can reduce the difficulty of welding, eliminate the need for manual welding one by one, and reduce the cost of endoscopes.

[0028] 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, and the dimensions of the PCB board 2 are: 2.6-3.0 mm in length, 2.0-2.5 mm in width. The camera module 1 includes a lens 11 and an image sensor 12. The image sensor 12 SMT patch is assembled to the PCB board 2, and the lens 11 is assembled to the PCB board 2 by gluing. The PCB board of the present application has a camera module installed on one side and a coaxial line connected to the other side. This design reduces the size of the camera module, which is conducive to the development of a thinner diameter endoscope camera module.

[0029] Furthermore, the coaxial line 3 includes the core line 31, a coaxial insulating outer skin covering the core line 31, and a coaxial shielding outer skin covering the coaxial insulating outer skin. Figure 6 As shown, at the other end of the coaxial line 3 connected to the PCB, a plurality of core wires 31 are electrically connected to the test module.

[0030] A welding process of an endoscope camera assembly according to an embodiment of the present application includes the following steps: S1: Pass the multiple core wires 31 of the coaxial line 3 through the threading holes 41 on the positioning clamp 4 in sequence and fix them; S2: Align the threading hole 41 on the positioning wire clamp 4 with the electrical connection portion 21 on the PCB board 2; S3 : Electrically connect the terminal end of the core wire 41 to the electrical connection portion 21 .

[0031] In order to improve the assembly efficiency, as a further preferred embodiment, before the coaxial line passes through the positioning wire clamp, the outer sheath of the coaxial line 3 can be stripped off by a machine to expose the multiple core wires 41 of the coaxial line 3, and then the core wires are manually passed through the threading holes in sequence, and UV glue is used to fix the core wires to the positioning wire clamp, and then the outer sheath of the core wire 31 is stripped off to expose the conductor at the end of the core wire 31, and the wire is cut.

[0032] As a further limitation, the step of "electrically connecting the end of the core wire 41 to the electrical connection part 21" specifically includes: tinning on multiple electrical connection parts 21, and welding the end of the core wire 41 to the electrical connection part 21 through a laser welding process. This step can be performed on an automatic welding machine. The present application can automatically strip wires, cut wires, tin, laser weld, and seal glue. Automatic welding can improve welding efficiency, reduce costs, and promote disposable endoscopy.

[0033] The present application provides an endoscope, including the above-mentioned endoscope camera assembly, which reduces the difficulty of welding and facilitates automated welding processing. It 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 a good application prospect.

[0034] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An endoscope camera assembly, characterized in that: include: Camera module (1); A PCB board (2), one side of which is electrically connected to the camera module (1), and the other side of which is provided with a plurality of electrical connection parts (21); A coaxial line (3) comprising a plurality of core wires (31) which can respectively and correspondingly be electrically connected to a plurality of the electrical connection portions (21); A positioning wire clamp (4), which is arranged on a side of the PCB board (2) close to the electrical connection portion (21) and is provided with a plurality of wire threading holes (41) corresponding to and connected to the electrical connection portion (21); The plurality of core wires (31) can pass through the plurality of threading holes (41) in sequence and be electrically connected one by one to the corresponding electrical connection parts (21).

2. The endoscope camera head assembly according to claim 1, characterized in that: Two rows of electrical connection parts (21) arranged side by side are arranged on the surface of the PCB board (2) away from the camera module (1), and two rows of threading holes (41) are correspondingly arranged side by side on the positioning wire clamp (4).

3. The endoscope camera head assembly according to claim 2, characterized in that: The portion on the PCB board (2) between the two rows of electrical connection portions (21) is a mounting area (20) for mounting electronic components (22); The positioning wire clamp (4) is provided with a clearance groove (42) recessed inwardly on a side close to the installation area (20) for accommodating the electronic component (22).

4. The endoscope camera head assembly according to claim 2, characterized in that: The edge of the positioning wire clamp (4) close to the electrical connection portion (21) is provided with an oblique chamfered portion (43) connected to the wire threading hole (41); After passing through the threading hole (41), the end of the core wire (31) is bent and extended to the chamfered portion (43) to be welded to the electrical connection portion (21).

5. The endoscope camera head assembly according to claim 1, characterized in that: The diameter of the threading hole (41) is adapted to the outer diameter of the core wire (31), and the core wire (31) is fixed in the threading hole (41) by UV glue; and / or The core wire (31) and the electrical connection portion (21) are welded by laser.

6. The endoscope camera head assembly according to claim 1, characterized in that: The camera module (1) comprises a lens (11) and an image sensor (12); the image sensor (12) is assembled onto the PCB board (2) by means of a SMT patch; and the lens (11) is assembled onto the PCB board (2) by means of gluing.

7. A welding process for an endoscope camera assembly according to any one of claims 1 to 6, characterized in that: The following steps are involved: Passing a plurality of core wires (31) of the coaxial line (3) through the threading holes (41) on the positioning wire clamp (4) in sequence and fixing them; Align the threading hole (41) on the positioning wire clamp (4) with the electrical connection portion (21) on the PCB board (2); The end of the core wire (41) is electrically connected to the electrical connection portion (21).

8. The welding process of the endoscope camera head assembly according to claim 7, characterized in that: The following steps are also included: Stripping the outer sheath of the coaxial line (3) to expose the plurality of core wires (41) of the coaxial line (3); The outer sheath of the core wire (31) is stripped off to expose the conductor at the end of the core wire (31).

9. The welding process of the endoscope camera head assembly according to claim 7, characterized in that: The step of "electrically connecting the end of the core wire (41) to the electrical connection portion (21)" specifically includes: Spot tinning is performed on a plurality of electrical connection parts (21), and the ends of the core wires (41) are welded to the electrical connection parts (21) by a laser welding process.

10. An endoscope, characterized in that: An endoscope camera head assembly comprising any one of claims 1-6.

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