Test tool with sensor for medical equipment wire harness cable processing

Abstract

The invention discloses a medical equipment wire harness cable processing test tool with a sensor, and relates to the technical field of wire harness detection. Comprising a testing machine body, an object placing machine table is fixedly installed in the testing machine body, a detection butt joint port is installed on the object placing machine table through a screw, a supporting machine frame is rotatably installed on the inner wall of the testing machine body, a two-way threaded rod is rotatably installed in the supporting machine frame, and a rotating wheel is fixedly installed on the two-way threaded rod; and the bidirectional threaded rod is in threaded connection with a movable block, a movable plate is fixedly installed on the movable block, an electromagnet is fixedly installed at the bottom of the movable plate, and a first telescopic rod is fixedly installed on the surface of the movable plate. Through cooperative work of the automatic ejection mechanism and the clamping adjustment mechanism, automatic insertion of the cable joint into the detection butt joint port and linkage control of clamping action and pressure adjustment of the supporting head are realized.

Description

Technical Field

[0001] This invention relates to the field of wire harness testing technology, specifically a testing fixture for processing medical device wire harnesses and cables with sensors. Background Technology

[0002] In the field of medical equipment, wire harnesses and cables are core connectors for power transmission, sensor signal acquisition, and command interaction. Especially for wire harnesses in medical equipment with sensors, their transmission accuracy and connection stability directly determine the operational reliability of devices such as electrocardiogram monitors, pulse oximeters, and ventilators. Problems such as poor contact or signal distortion can easily lead to medical diagnostic errors or equipment malfunctions, threatening patients' lives and health. Testing fixtures for wire harness and cable processing, through the integrated application of various high-precision sensors, can accurately detect key indicators throughout the entire processing of medical equipment wire harnesses and cables. By constructing a continuity detection circuit using current and voltage sensors, the continuity status of the wire harness cores can be monitored in real time, accurately locating defects such as open circuits and loose connections. Tensile sensors monitor the tensile parameters during wire harness crimping and butt welding in real time, ensuring that the connection strength meets the reliability requirements under vibration and impact conditions of medical equipment.

[0003] Traditional fixtures often employ fixed-size clamping mechanisms, which are inconvenient for flexibly adapting to medical sensor harnesses of varying thicknesses. Excessive clamping can cause the harness to slip and shift during testing, while excessive clamping can damage the cable insulation or connector structure, affecting the accuracy of test results. Furthermore, precise control of clamping force is difficult. Traditional clamping structures often use rigid or simple elastic clamping, making it inconvenient to adjust the clamping force according to the cable material (e.g., flexible medical silicone sheath, rigid insulating sheath). This can easily lead to excessive clamping damaging the internal conductors of the cable, or excessive clamping causing the cable to detach or resulting in poor contact during testing. Moreover, the automation level of testing is low; most fixtures require manual insertion of the cable connector into the testing interface, which is not only labor-intensive but can also damage the interface due to uneven insertion force or incorrect insertion angle, while simultaneously reducing the standardization of the testing process.

[0004] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0005] The purpose of this invention is to provide a testing fixture for processing medical device wiring harnesses and cables with sensors, in order to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a testing fixture for processing medical device wire harnesses and cables with sensors, comprising a testing body, a platform fixedly installed inside the testing body, a detection interface installed on the platform by screws, a support frame rotatably installed on the inner wall of the testing body, a bidirectional threaded rod rotatably installed inside the support frame, a rotating wheel fixedly installed on the bidirectional threaded rod, a movable block threadedly connected to the bidirectional threaded rod, a movable plate fixedly installed on the movable block, an electromagnet fixedly installed at the bottom of the movable plate, a telescopic rod fixedly installed on the surface of the movable plate, a deflection motor installed inside the testing body via a rotating shaft, the output end of the deflection motor connected to the support frame via a connecting shaft, and a vision sensor provided on the deflection motor; A clamping adjustment mechanism is mounted on a movable plate and is used to accommodate cables of different thicknesses. An automatic ejection mechanism is mounted on a moving plate and is used to automatically insert materials into the detection interface.

[0007] Preferably, the clamping adjustment mechanism includes a connecting block, which is fixedly installed at the top end of the telescopic rod, and an electric push rod is fixedly installed inside the connecting block.

[0008] Preferably, a support base is fixedly installed at the top end of the electric push rod, and an abutment block is fixedly installed on the support base. The abutment block, when viewed from the front, is a column with a radius that decreases continuously upward.

[0009] Preferably, the clamping adjustment mechanism further includes a clamping head, and a second telescopic rod is connected and installed at the bottom of the clamping head. The second telescopic rod is elastically slidably installed in a groove opened at the upper end of the connecting block.

[0010] Preferably, an inclined track groove is provided on the upper sliding groove sidewall of the connecting block, the telescopic rod 2 slides in the track groove by being limited by a protrusion, and an abutment plate is connected to the lower protruding end of the telescopic rod 2, the abutment plate and the abutment block abut against each other.

[0011] Preferably, the upper end of the second telescopic rod is installed through the interior of the clamping head, and a pressing block is fixedly installed on the upper end of the second telescopic rod. The inner wall of the clamping head is arc-shaped when viewed from the side. A rotating rod is rotatably installed on the inner wall of the clamping head by a torsion spring, and a support head is connected and installed on the rotating rod.

[0012] Preferably, the clamping and adjusting mechanism further includes an oil cylinder, which is fixedly installed inside the connecting block, and the piston rod at the front end of the oil cylinder is fixedly connected to the telescopic rod two.

[0013] Preferably, the oil cylinder is interconnected with the cavity inside the rotating rod via a fluid delivery hose. A squeezing disc is movably installed inside the rotating rod, and the diameter of the squeezing disc is the same as the diameter of the cavity inside the rotating rod. The squeezing disc is connected to the support head via a pressure spring.

[0014] Preferably, the automatic ejection mechanism includes a sliding plate, which is elastically and slidably installed inside the connecting block. The top of the sliding plate is located at the lower end of the abutment block, and a magnet is fixedly installed inside the lower end of the connecting block.

[0015] Preferably, the sliding plate is positioned in front of the magnet, the magnet has the same magnetic properties as the electromagnet, and the positions of the magnet and the electromagnet correspond to each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The clamping and adjustment mechanism has strong adaptability and can be compatible with multi-specification cable testing: The clamping and adjustment mechanism drives the abutment block to move through an electric push rod, and with the limiting and guiding effect of the track groove on the telescopic rod two, the clamping head can achieve synchronous opening and closing adjustment. The abutment block adopts a cylindrical structure with the radius decreasing upwards, and the opening and closing range of the clamping head can be continuously adjusted through linear movement, thus adapting to wire harnesses and cables of different thicknesses and specifications. At the same time, the inner wall of the clamping head adopts an arc design, which, together with the rotatable support head, can adapt to cable connectors with different outer contours. There is no need to replace the clamping parts, which significantly improves the versatility of the tooling and the testing efficiency. 2. The through-hole design between the hydraulic cylinder and the rotating rod enables coordinated control of the clamping action and the support head pressure adjustment. When the telescopic rod 2 drives the clamping head to close and clamp the cable, the hydraulic fluid inside the rotating rod is drawn into the hydraulic cylinder, reducing the pressure plate's effect on the support head. Combined with the buffering effect of the pressure spring, this allows the support head to apply a uniform and controllable clamping force to the cable. At the same time, the torsion spring provides elastic restoring force to the rotating rod, which can adaptively adjust the clamping angle and pressure according to the cable's material and hardness, effectively avoiding damage to the cable's outer sheath or internal conductor caused by rigid clamping, thus ensuring the cable's integrity. 3. The automatic ejection mechanism and the clamping and adjusting mechanism work together. The magnetic repulsion between the electromagnet and the magnet drives the connecting block to move, realizing the automatic insertion of the cable connector into the test interface. At the same time, the magnetic force between the magnet and the electromagnet is adjusted according to the obstruction range of the sliding plate, thereby adjusting the impact force synchronously. Compared with manual docking, this not only reduces labor intensity, but also precisely controls the insertion angle and insertion force through the mechanical structure, avoiding interface damage caused by human operation deviation, improving the standardization of the testing process and docking stability, and ensuring the accuracy of the test results. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the connection structure between the movable plate and the connecting block of the present invention; Figure 3 This is a schematic diagram of the internal structure of the support frame of the present invention; Figure 4 This is a side view of the clamping head structure of the present invention; Figure 5 This is a schematic diagram of the internal side view of the connecting block of the present invention; Figure 6 This is a schematic cross-sectional view of the back of the connecting block of the present invention; Figure 7 This is a schematic diagram of the clamping head structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the rotating rod of the present invention; Figure 9 This is a schematic diagram of the connection structure between the vision sensor and the deflection motor of the present invention.

[0018] In the diagram: 1. Test body; 2. Placement platform; 3. Detection interface; 4. Support frame; 5. Bidirectional threaded rod; 6. Rotating wheel; 7. Movable block; 8. Moving plate; 9. Electromagnet; 10. Telescopic rod one; 11. Connecting block; 12. Electric push rod; 13. Support base; 14. Abutment block; 15. Clamping head; 16. Telescopic rod two; 17. Track groove; 18. Abutment plate; 19. Extrusion block; 20. Rotating rod; 21. Support head; 22. Hydraulic cylinder; 23. Piston rod; 24. Extrusion plate; 25. Sliding plate; 26. Magnet; 27. Deflection motor; 28. Vision sensor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-8This invention provides a technical solution: a testing fixture for processing medical device wire harnesses and cables with sensors, comprising a testing body 1, a platform 2 fixedly installed inside the testing body 1, a detection interface 3 installed on the platform 2 by screws, a support frame 4 rotatably installed on the inner wall of the testing body 1, a bidirectional threaded rod 5 rotatably installed inside the support frame 4, a rotating wheel 6 fixedly installed on the bidirectional threaded rod 5, a movable block 7 threadedly connected to the bidirectional threaded rod 5, a movable plate 8 fixedly installed on the movable block 7, an electromagnet 9 fixedly installed at the bottom of the movable plate 8, a telescopic rod 10 fixedly installed on the surface of the movable plate 8, a deflection motor 27 installed inside the testing body 1 via a rotating shaft, the output end of the deflection motor 27 being connected to the support frame 4 via a connecting shaft, and a vision sensor 28 being provided on the deflection motor 27; The clamping adjustment mechanism is set on the movable plate 8 and is used to adapt to the clamping of cables of different thicknesses. An automatic ejection mechanism is installed on the movable plate 8. The automatic ejection mechanism is used to automatically insert the material into the detection interface 3.

[0021] In one embodiment of the present invention, the clamping adjustment mechanism includes a connecting block 11, which is fixedly installed at the top end of the telescopic rod 10, and an electric push rod 12 is fixedly installed inside the connecting block 11.

[0022] In one embodiment of the present invention, a support base 13 is fixedly installed at the top end of the electric push rod 12, and an abutment block 14 is fixedly installed on the support base 13. The abutment block 14 is a column with a radius that decreases continuously upward when viewed from the front.

[0023] As one embodiment of the present invention, the clamping adjustment mechanism further includes a clamping head 15, and a telescopic rod 16 is connected and installed at the bottom of the clamping head 15. The telescopic rod 16 is elastically slidably installed in a groove opened at the upper end of the connecting block 11.

[0024] In one embodiment of the present invention, an inclined track groove 17 is provided on the upper sliding groove side wall of the connecting block 11, and the telescopic rod 16 slides in the track groove 17 by means of a protrusion limiting the movement. The lower protruding end of the telescopic rod 16 is connected to an abutment plate 18, and the abutment plate 18 abuts against the abutment block 14.

[0025] In one embodiment of the present invention, the upper end of the telescopic rod 16 is installed through the interior of the clamping head 15, and the upper end of the telescopic rod 16 is fixedly installed with a pressing block 19. The inner wall of the clamping head 15 is arc-shaped when viewed from the side. A rotating rod 20 is rotatably installed on the inner wall of the clamping head 15 by means of a torsion spring, and a support head 21 is connected and installed on the rotating rod 20.

[0026] As one embodiment of the present invention, the clamping adjustment mechanism further includes an oil cylinder 22, which is fixedly installed inside the connecting block 11, and the piston rod 23 at the front end of the oil cylinder 22 is fixedly connected to the telescopic rod 16.

[0027] In one embodiment of the present invention, the oil cylinder 22 is connected to the cavity inside the rotating rod 20 through the infusion hose. The squeezing plate 24 is movably installed inside the rotating rod 20. The diameter of the squeezing plate 24 is the same as the diameter of the cavity inside the rotating rod 20. The squeezing plate 24 is connected to the support head 21 through a pressure spring.

[0028] The clamping adjustment mechanism drives the abutment block 14 to rise and fall via the electric push rod 12. In conjunction with the linkage structure of the track groove 17 and the telescopic rod 16, it can drive the clamping head 15 to flexibly adjust the opening and closing range, which can adapt to medical sensor wire harnesses of different thicknesses and specifications, avoiding the limitations of fixed-size clamping mechanisms. Utilizing the design of the hydraulic cylinder 22 and the internal hydraulic passage of the rotating rod 20, the clamping force of the support head 21 can be precisely controlled through hydraulic transmission. The corresponding clamping pressure is matched for connectors of different hardness, such as plastic connectors and metal connectors, which not only ensures the firmness of cable clamping, but also avoids damage to cables and connectors caused by over-clamping.

[0029] As one embodiment of the present invention, the automatic ejection mechanism includes a sliding plate 25, which is elastically and slidably installed inside the connecting block 11. The top end of the sliding plate 25 is located at the lower end of the abutment block 14, and a magnet 26 is fixedly installed inside the lower end of the connecting block 11.

[0030] In one embodiment of the present invention, the sliding plate 25 is moved down to a position in front of the magnet 26, the magnet 26 has the same magnetism as the electromagnet 9, and the positions of the magnet 26 and the electromagnet 9 correspond to each other.

[0031] When it is necessary to increase the impact force, the electric push rod 12 drives the abutment block 14 to descend. The abutment block 14 presses the sliding plate 25 to slide downward elastically, reducing the blocking range of the sliding plate 25 on the magnet 26. This increases the effective magnetic force area between the magnet 26 and the electromagnet 9, thereby strengthening the repulsive magnetic force and increasing the impact force that drives the connecting block 11 to move. This is suitable for snap-fit ​​joints and other joints that require a large insertion force.

[0032] When it is necessary to reduce the impact force, the electric push rod 12 drives the abutment block 14 to rise, and the sliding plate 25 returns to its original position and moves upward under the elastic force, expanding the shielding range of the magnet 26, reducing the effective magnetic interaction area between the magnet 26 and the electromagnet 9, weakening the repulsive magnetic force, and synchronizing the impact force. This reduces the impact force and avoids problems such as pin bending and joint deformation in precision joints such as pin-type connectors due to excessive impact force.

[0033] Working principle: Before using the device, the visual sensor 28 scans and detects the model of the interface 3, and transmits the signal to the built-in PLC control program of the test machine 1. The transmission signal adjusts the rotation amplitude of the deflection motor 27 connected to the support frame 4, so that the support frame 4 can swing to different degrees according to different models of cables, thereby better detecting the tension performance of different cables. The test interface 3 can be detached and replaced in the storage platform 2. The corresponding test interface 3 can be replaced according to different specifications of cables. The operator then rotates the rotating wheel 6 to drive the bidirectional threaded rod 5 to rotate. Since the bidirectional threaded rod 5 is threadedly engaged with the movable block 7 and the movable block 7 is fixedly connected to the moving plate 8, the rotational motion of the bidirectional threaded rod 5 can be converted into the horizontal linear motion of the moving plate 8 along the support frame 4 until the clamping and adjusting mechanism is precisely aligned with the picking position of the cable to be tested. Place the cable to be tested on the support base 13 between the two sets of clamping heads 15, and start the electric push rod 12. Its protruding end pulls the support base 13 and the abutment block 14 downwards in sync. Since the abutment block 14 is a cylindrical structure with a decreasing radius when viewed from the front, and it is in close contact with the abutment plate 18, when the abutment block 14 moves downwards, the telescopic rod 16 slides inwards in sync under the action of the spring until the clamping head 15 initially clamps the cable, thereby completing the initial positioning of the cable. As the telescopic rod 16 moves along the track groove 17, its upper end moves upward along the track groove 17, pushing the tail end of the rotating rod 20 through the squeezing block 19. This causes the rotating rod 20 to deflect via the pivot, thus better aligning it with the cable to be fixed. Simultaneously, the movement of the telescopic rod 16 pulls the piston rod 23 on the hydraulic cylinder 22, drawing the hydraulic fluid inside the rotating rod 20 into the hydraulic cylinder 22. This reduces the pressure of the squeezing plate 24 on the support head 21. {The greater the displacement of the clamping head 15 and the thinner the cable, the smaller the required clamping force should be,} ensuring a good fit with cables of different outer contours. The buffering characteristics of the pressure spring effectively prevent excessive clamping force from damaging the cable, ultimately achieving precise control and adaptive adjustment of the clamping force. After the cable is securely clamped, the electromagnet 9 is activated. When the electromagnet 9 is energized, it generates a magnetism with the same polarity as the magnet 26 inside the connecting block 11. Under the action of magnetic repulsion, the connecting block 11 moves forward, causing the cable plug to connect with the detection interface 3. At the same time, the abutment block 14 pushes the sliding plate 25 to move down synchronously during its downward movement, thereby changing the contact area between the magnet 26 and the electromagnet 9, and thus changing the magnitude of the magnetic force that pushes the connecting block 11 to move. This allows for fine adjustment of the force and increases the adaptability to different plug specifications. After the cable is inserted into place, the detection system inside the test body 1 detects the core performance indicators such as the cable's conductivity and signal transmission stability through the detection interface 3. The detection data can be fed back to the terminal in real time through the sensors built into the medical device, realizing the visualization and datafication of the testing process.

[0034] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used only for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A test tool for processing harness cables of medical devices with sensors, comprising a test machine body (1), a placing machine table (2) is fixedly installed inside the test machine body (1), characterized in that: The detection interface (3) is installed on the placing machine (2) by screw, the support rack (4) is rotatably installed on the inner wall of the test body (1), the bidirectional threaded rod (5) is rotatably installed in the support rack (4), the rotating wheel (6) is fixedly installed on the bidirectional threaded rod (5), the movable block (7) is threadedly connected on the bidirectional threaded rod (5), the moving plate (8) is fixedly installed on the movable block (7), the electromagnet (9) is fixedly installed on the bottom of the moving plate (8), the telescopic rod one (10) is fixedly installed on the surface of the moving plate (8), the deflection motor (27) is installed in the test body (1) by a rotating shaft, the output end of the deflection motor (27) is connected with the support rack (4) through a connecting shaft, and the visual sensor (28) is arranged on the deflection motor (27). The clamping adjusting mechanism is arranged on the moving plate (8), and is used for adapting the clamping of cables with different specifications. The automatic ejection mechanism is arranged on the moving plate (8), and is used for automatically inserting the material into the detection interface (3).

2. The test fixture for processing harness cables for medical devices with sensors of claim 1, wherein: The clamping adjusting mechanism comprises a connecting block (11) fixedly installed on the top end of the telescopic rod one (10), and the electric push rod (12) is fixedly installed in the connecting block (11).

3. The test fixture for processing a harness cable with a sensor for a medical device according to claim 2, characterized in that: The top end of the electric push rod (12) is fixedly installed with a support seat (13), the support seat (13) is fixedly installed with an abutting block (14), and the abutting block (14) is a column body with a radius continuously decreasing upwards in the front view.

4. The test fixture for processing a harness cable with a sensor for a medical device according to claim 3, characterized by: The clamping adjusting mechanism further comprises a clamping head (15) connected and installed at the bottom of the telescopic rod two (16), and the telescopic rod two (16) is elastically and slidably installed in the groove on the upper end of the connecting block (11).

5. The test fixture for processing a harness cable with a sensor for a medical device according to claim 4, characterized by: An inclined track groove (17) is arranged on the sidewall of the upper end groove of the connecting block (11), the telescopic rod two (16) is limitedly slid in the track groove (17) through a protruding block, the bottom of the telescopic rod two (16) is connected with an abutting plate (18), and the abutting plate (18) and the abutting block (14) abut each other.

6. The test fixture for processing a harness cable with a sensor for a medical device according to claim 3, characterized by: The upper end of the telescopic rod two (16) is installed into the inside of the clamping head (15), the upper end of the telescopic rod two (16) is fixedly installed with a pressing block (19), the side wall of the clamping head (15) is arc-shaped, the rotating rod (20) is rotatably installed on the inner wall of the clamping head (15) through a torsion spring, and the support head (21) is connected and installed on the rotating rod (20).

7. The test fixture for processing a harness cable with a sensor for a medical device according to claim 1, characterized by: The oil cylinder (22) is fixedly installed in the connecting block (11), and the front end piston rod (23) of the oil cylinder (22) is fixedly connected to the telescopic rod two (16).

8. The test fixture for processing a harness cable with a sensor for a medical device according to claim 7, characterized by: The oil liquid cylinder (22) is communicated with the cavity in the rotating rod (20) through the transfusion hose, the movable extruding disc (24) is installed in the rotating rod (20), the diameter of the extruding disc (24) is same with the diameter of the cavity in the rotating rod (20), and the extruding disc (24) is connected with the supporting head (21) through the pressure spring.

9. The test fixture for processing a harness cable with a sensor for a medical device according to claim 1, characterized by: The automatic ejection mechanism comprises a sliding plate (25) which is elastically and limitingly slidably installed in the connecting block (11), and the top end of the sliding plate (25) is located at the lower end of the abutting block (14).

10. The test fixture for processing a harness cable with a sensor for a medical device according to claim 9, characterized in that: The lower position of the sliding plate (25) is located in front of the magnet (26), the magnetism of the magnet (26) is same with that of the electromagnet (9), and the magnet (26) corresponds to the position of the electromagnet (9).

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