Four-coaxial fixed connecting device and electronic endoscope

Abstract

The utility model relates to a four coaxial fixed connection device and electronic endoscope, including male end connector and the female end connector that inserts male end connector, male end connector includes metal fixed seat and with metal fixed seat connection adapter, the other end of adapter is connected with cable, metal fixed seat is equipped with the insert area, and the insert area is equipped with the female end connector that inserts male end connector and female end connector that inserts male end connector. The female end connector comprises a shell inserted into the insertion area, a pinhole seat is arranged in the shell, an annular groove is formed between the pinhole seat and the shell, the metal fixing seat is inserted into the annular groove to connect the male end connector and the female end connector, a pinhole group is arranged on the pinhole seat, a pin core group is correspondingly arranged in the insertion area, and the pin core group is inserted into the pinhole group to perform signal transmission. When the male-end connector and the female-end connector are plugged and unplugged, the movable protruding block contracts inwards and easily enters the female-end connector when being pressed by external force. After the movable protruding block enters the female end connector, due to the fact that a certain movable gap exists in the movable protruding block, the movable protruding block can protrude upwards without downward pressure extrusion, and the movable protruding block is not prone to falling off.

Description

Technical Field

[0001] The utility model relates to the field of connecting devices of electronic endoscopes, in particular to a four-coaxial fixed connecting device and an electronic endoscope. Background Art

[0002] There are many different types of aviation plugs, and different medical devices have different requirements for connector electrical connections. For example, some medical devices must be frequently plugged in, which necessitates a long service life for the aviation plug. Some medical devices require that the aviation plug provide not only very low contact resistance but also a high current carrying capacity, which places a significant strain on the connector size. Excessive mechanical insertion force can damage the device, making low insertion force particularly important. In some locations, the external environment is subject to strong vibration and mechanical shock, which necessitates that the aviation plug maintain a reliable electrical connection and good insertion accuracy under these conditions.

[0003] Aviation connectors used in medical equipment must demonstrate high reliability, including long production times, low contact resistance, high rated voltage, low insertion force, and resistance to vibration and mechanical shock. Precision medical equipment, in particular, demands even higher performance and reliability. For example, a defibrillator must have low contact resistance and excellent contact stability; otherwise, it poses a threat to life.

[0004] Chinese Patent Publication No. CN212394870U discloses an integrated endoscope light guide connector and a locking device for the light guide connector. The device comprises a multifunctional plug, a shielding connector frame, a PCB board, a light guide connector shielding cover, a housing a, and a housing b. One end of housing a is connected to the multifunctional plug via the shielding connector frame, and the other end of housing a is connected to housing b. The PCB board is disposed within the light guide connector shielding cover, which is also disposed within housing a. One side of the multifunctional plug is integrated with an air inlet, a light inlet, and a male end of a signal connector. In this utility model, the air inlet, light inlet, and male end of the signal connector are integrated into the front end of the multifunctional plug to form an integrated connector. The corresponding light guide socket is provided with an air inlet connector, a light guide connector, and a female end of the signal connector. This design is convenient and quick to use during operation, significantly improves image stability, indirectly reduces the requirements for connector reliability, improves waterproof performance, and reduces the cost of a set of connectors. The male and female ends of this patent utilize a conventional structural connection, which requires a large insertion force during insertion, making insertion difficult. Furthermore, after insertion, the connector can be easily pulled out by mistake, which affects its usability. Utility Model Content

[0005] The technical problem to be solved by this utility model is that conventional electronic endoscopes are difficult to insert during surgery due to the high insertion force, poor anti-interference performance, signal transmission stability, and image delay. To address these shortcomings of the prior art, a quad-coaxial fixed connection device and an electronic endoscope are provided.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A four-coaxial fixed connection device is constructed, including a male connector and a female connector inserted into the male connector, the male connector including a metal fixing seat and an adapter seat connected to the metal fixing seat, the other end of the adapter seat is connected to a cable, an insertion area is provided in the metal fixing seat, the female connector includes a shell inserted into the insertion area, a pinhole seat is provided in the shell, an annular groove is provided between the pinhole seat and the shell, the metal fixing seat is inserted into the annular groove to connect the male connector and the female connector, a pinhole group is provided on the pinhole seat, a needle core group is correspondingly provided in the insertion area, and the needle core group is inserted into the pinhole group for signal transmission.

[0008] Preferably, the exterior of the metal fixing seat and the interior of the shell are connected via a self-locking structure.

[0009] Preferably, the self-locking structure includes at least one group of movable protrusions arranged on the outside of the metal fixing seat, and an inner groove is provided in the annular groove corresponding to the movable protrusions. When the metal fixing seat is inserted into the annular groove, the outer shell causes the movable protrusion to deform, and after the insertion is completed, the movable protrusion is placed in the inner groove and recovers its deformation to generate a self-locking force between the inner wall of the outer shell.

[0010] Preferably, the exterior of the metal fixing seat and the annular groove are connected by a positioning device, the pinhole group includes multiple groups of solid pinholes and multiple groups of hollow pinholes, and the needle core group is provided with multiple groups of solid needle cores and hollow needle cores corresponding to the pinhole group, the hollow needle core is inserted into the hollow pinhole, and the solid pinhole is inserted into the solid needle core.

[0011] Preferably, the positioning device includes a positioning protrusion arranged outside the metal fixing seat, and a positioning groove is provided in the annular groove corresponding to the positioning protrusion. The male connector and the female connector can be connected only when the positioning protrusion is inserted into the positioning groove.

[0012] Preferably, the positioning device further comprises a positioning point arranged outside the metal fixing seat, a distance is left between the positioning point and the positioning protrusion, and the positioning point and the positioning protrusion are on the same horizontal line or vertical line.

[0013] Preferably, the metal fixing seat includes at least two groups of outer walls, and the radius of the outer wall close to the adapter seat is larger than the radius of the outer wall away from the adapter seat. The pinhole group is a slotted structure, the solid pinhole and the hollow pinhole are coaxially arranged, and the hollow pinhole is placed in a ring shape inside the solid pinhole, and the needle core group corresponds to the pinhole group structure.

[0014] Preferably, the cable includes an outer jacket layer and a shielding layer arranged in the outer jacket layer, a wrapping layer is arranged in the shielding layer, a conductor layer and an axis layer are arranged in the wrapping layer, the axis layer is placed inside the conductor layer, and a filling layer is arranged in the gap between the conductor layer and the axis layer.

[0015] Preferably, the connection between the adapter and the cable is provided with staggered transverse grooves and / or vertical grooves, and the transverse grooves and / or vertical grooves enable the grooves to open after the adapter is stretched at any angle.

[0016] An electronic endoscope is constructed, in which a quad-coaxial fixed connection device as described above is provided, and signal transmission is performed through the fixed connection device.

[0017] The beneficial effects of the present invention are as follows: by setting a positioning point on the male connector, the male connector can be quickly plugged in and unplugged to avoid damage to the connector due to incorrect plugging and unplugging. When the male connector and the female connector are plugged in and unplugged, the movable protrusion will shrink inward when pressed by external force and easily enter the female connector; after the movable protrusion enters the female connector, due to a certain movable gap inside, the movable protrusion will not be squeezed by downward pressure, and will bulge upward and will not fall off easily; at the same time, the use of four coaxial needle cores and twelve coaxial needle cores makes the plug-in structure tighter and less likely to fall off, and at the same time, the signal transmission is smoother and there is no delay, which makes the medical equipment more stable and reliable. The outer protective sheath of the cable protects the internal structure, and the shielding layer ensures the transmission performance of the system in an environment with electromagnetic interference, which not only resists external electromagnetic interference but also shields the system's own ability to radiate electromagnetic interference outward, and can effectively filter out unnecessary electromagnetic waves; the PTFE membrane plays an insulating and isolating role, isolating signals and grounding; it has good electrical performance and environmental performance indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0019] Figure 1 This is a structural diagram of a fixed connection device according to a preferred embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the female connector of a preferred embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the front structure of the female connector of a preferred embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of a male connector in a preferred embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the axial structure of the male connector of a preferred embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the front structure of the male connector of a preferred embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of a cable according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] A four-coaxial fixed connection device according to a preferred embodiment of the present invention; Figure 1 As shown, it includes a female connector 10 and a male connector 20 inserted into the female connector 10, and the two connection groups are connected to form a fixed connection device.

[0028] Specifically, such as Figure 2-6As shown, the male connector 20 includes a metal fixing seat 202 and an adapter seat 200 connected to one end of the metal fixing seat, and the other end of the adapter seat is connected to the cable 201. The metal fixing seat 202 is provided with an insertion area 2024 inside, and multiple groups of needle core groups 203 are provided in the insertion area. The female connector 10 includes a silver metal shell 100 and a pinhole seat 101 provided in the shell. An annular groove 102 is provided between the pinhole seat and the inner wall of the shell. The metal fixing seat of the male end can be inserted into the annular groove to connect the male connector with the female connector. The outer wall of the metal fixing seat is in contact with the inner wall of the shell, and the inner wall of the metal fixing seat is in contact with the outer wall of the pinhole seat. A pinhole group 103 is provided on the pinhole seat corresponding to the needle core group 203. The needle core group is inserted into the pinhole group to electrically connect the male connector and the female connector and realize signal transmission.

[0029] Furthermore, if Figure 2-3 and Figure 6-7 As shown, the needle core group 103 includes 12 groups of solid needle cores 1031 and 4 groups of hollow needle cores 1030. The 12 groups of solid needle cores are distributed around the periphery of the hollow needle core, and the outer surface of the solid needle core is gold-plated. The 4 groups of hollow needle cores are distributed in the inner circle, and the four groups of solid needle cores and the 12 groups of hollow needle cores are all coaxially arranged and are all set to a circular needle core structure. Since the needle core group 103 is inserted into the pinhole group 203 for electrical connection, the distribution of the pinhole group should be the same as that of the needle core group. 12 groups of solid pinholes are set for the 12 groups of solid needle cores, and 4 groups of hollow pinholes are set for the 4 groups of hollow needle cores. They are coaxially arranged and have a circular structure. Due to the multiple groups of coaxial lines, the video signal is stronger, and the 4 coaxial video signal streams make the image smoother and without delay. The 4 groups of needle core male and female sockets are matched and connected, and 12 groups of small signal pins are added to the outer circle for docking, which is more reliable. At the same time, in order to facilitate the insertion of the needle core into the needle hole, the needle hole should be set as a slotted structure. The needle core inserted into the needle hole generates a thrust on the needle hole to push the slotted structure open. At the same time, multiple groups of needle core needle holes are set to make the plug-in structure tighter and not easy to fall off.

[0030] Furthermore, if Figure 4-5 As shown, the exterior of the metal fixing seat 202 includes a first outer wall 2025, a second outer wall 2026 and a third outer wall 2027. The third outer wall is arranged close to the adapter seat 200, and the second outer wall is placed between the first outer wall and the third outer wall. The radius of the first outer wall is smaller than the radius of the second outer wall, and the radius of the second outer wall is smaller than the radius of the third outer wall, so that the resistance of the metal fixing seat to be inserted into the ring groove gradually increases, the insertion feel is more obvious, and the insertion is more convenient.

[0031] Furthermore, if Figure 2-6As shown, to facilitate the positioning of the metal fixing seat 202 and the annular groove 102, a recessed portion 2020 is provided in the middle of the first outer wall 2025, and a positioning protrusion 2022 is provided in the recessed portion. A positioning groove is provided in the annular groove corresponding to the positioning protrusion. Only when the positioning protrusion is inserted into the positioning groove can the male connector be inserted into the female connector. In addition, to facilitate the identification of the alignment direction of the positioning protrusion and the positioning groove, a positioning point 2023 is provided on the second outer wall 2026 or the third outer wall 2027. The positioning point and the positioning protrusion are on the same horizontal line. Aligning the positioning groove with the positioning point can achieve alignment between the positioning groove and the positioning block, thus preventing damage to the connector due to incorrect insertion and removal.

[0032] Furthermore, if Figure 2-6 As shown, a plug-in self-locking structure is also provided between the metal fixing seat 202 and the annular groove. The plug-in self-locking structure includes three groups of movable protrusions 2021 arranged on the recessed portion, and the movable ends of the movable protrusions are facing away from the opening side of the insertion area. When the metal fixing seat is inserted into the annular groove, the inner wall of the annular groove generates an extrusion force on the movable protrusion to move the movable block toward the recessed portion. When it is installed in place, the pressure on the movable block is released and restored, and a clamping self-locking structure is formed between the inner wall of the annular groove. Therefore, the corresponding movable protrusion in the annular groove should also be provided with an inner groove so that the movable block is placed in the inner groove to restore deformation and form a self-locking force between the annular groove.

[0033] Furthermore, if Figure 4 As shown, the outer shell of the adapter seat 200 is a plastic shell, and it supports a metal fixing seat. A cross-distributed horizontal groove 2000 and a vertical groove 2001 are provided on the side connected to the cable. The horizontal grooves and the vertical grooves are alternately distributed so that there is a certain tension when stretching at any angle, thereby avoiding the breakage of the connecting seat.

[0034] Furthermore, if Figure 7 As shown, cable 201 has an outer silicone sheath, within which is a shielding layer, as well as a conductor layer and a coaxial cable layer within the shielding layer. The coaxial cables are arranged in four layers, and the conductor layer is arranged in eight layers. The conductor layer is placed outside the coaxial cables and is wrapped with a PTFE film layer. Cotton rope or other filler is added inside. The sheath protects the cable's internal structure, while the shielding layer ensures the system's transmission performance in an environment with electromagnetic interference. It not only resists external electromagnetic interference but also shields the system's ability to radiate electromagnetic interference, effectively filtering out unnecessary electromagnetic waves. The inner layer of the braided shielding layer is wrapped with PTFE film, which acts as an insulator, isolating the signal from the ground. The shielding layer exhibits excellent electrical and environmental performance.

[0035] A preferred embodiment of the present invention provides an electronic endoscope; the electronic endoscope transmits signals via the aforementioned quad-coaxial fixed connection device. The specific structure of the fixed connection device is as described above and will not be repeated here. The quad-coaxial fixed connection device can also be used for signal transmission in medical equipment such as ventilators.

[0036] It should be understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A fixed connection device for a quad-coaxial cable, comprising a male connector and a female connector inserted into the male connector, the male connector comprising a metal fixing base and an adapter connected to the metal fixing base, the adapter having the other end connected to a cable, and an insertion area provided within the metal fixing base, characterized in that: The female connector includes a shell inserted into the insertion area, a pinhole seat is provided in the shell, a ring groove is provided between the pinhole seat and the shell, a metal fixing seat is inserted into the ring groove to connect the male connector and the female connector, a pinhole group is provided on the pinhole seat, and a needle core group is correspondingly provided in the insertion area, and the needle core group is inserted into the pinhole group for signal transmission.

2. The fixed connection device according to claim 1, characterized in that: The exterior of the metal fixing seat and the interior of the shell are connected via a self-locking structure.

3. The fixed connection device according to claim 2, characterized in that: The self-locking structure includes at least one group of movable protrusions arranged on the outside of the metal fixing seat, and an inner groove is provided in the annular groove corresponding to the movable protrusions. When the metal fixing seat is inserted into the annular groove, the outer shell causes the movable protrusion to deform, and after the insertion is completed, the movable protrusion is placed in the inner groove and recovers its deformation to generate a self-locking force between it and the inner wall of the outer shell.

4. The fixed connection device according to any one of claims 1 to 3, characterized in that: The exterior of the metal fixing seat and the annular groove are connected by a positioning device. The pinhole group includes multiple groups of solid pinholes and multiple groups of hollow pinholes. The needle core group is provided with multiple groups of solid needle cores and hollow needle cores corresponding to the pinhole group. The hollow needle core is inserted into the hollow pinhole, and the solid pinhole is inserted into the solid needle core.

5. The fixed connection device according to claim 4, characterized in that: The positioning device includes a positioning protrusion arranged outside the metal fixing seat, and a positioning groove is provided in the annular groove corresponding to the positioning protrusion. The male connector and the female connector can be connected only when the positioning protrusion is inserted into the positioning groove.

6. The fixed connection device according to claim 5, characterized in that: The positioning device further comprises a positioning point arranged outside the metal fixing seat, a distance is left between the positioning point and the positioning protrusion, and the positioning point and the positioning protrusion are on the same horizontal line or vertical line.

7. The fixed connection device according to claim 4, characterized in that: The metal fixing seat includes at least two groups of outer walls, and the radius of the outer wall close to the adapter seat is larger than the radius of the outer wall away from the adapter seat. The pinhole group is a slotted structure. The solid pinhole and the hollow pinhole are coaxially arranged, and the hollow pinhole is placed in a ring shape inside the solid pinhole. The needle core group corresponds to the pinhole group structure.

8. The fixed connection device according to claim 1, characterized in that: The cable includes an outer jacket layer and a shielding layer arranged in the outer jacket layer, a wrapping layer is arranged in the shielding layer, a conductor layer and an axis layer are arranged in the wrapping layer, the axis layer is placed inside the conductor layer, and a filling layer is arranged in the gap between the conductor layer and the axis layer.

9. The fixed connection device according to claim 8, characterized in that: The connection between the adapter and the cable is provided with staggered horizontal grooves and / or vertical grooves, which enable the adapter to open after being stretched at any angle.

10. An electronic endoscope, characterized in that: The electronic endoscope is provided with a quad-coaxial fixed connection device as described in any one of claims 1 to 9, and signal transmission is performed through the fixed connection device.

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