Thick-wall cable sensor

Abstract

The utility model relates to the field of rail transit sensor equipment, in particular to a thick-wall cable sensor. The thick-wall cable sensor comprises a sensor probe assembly, a thick-wall cable and a connector assembly, the two ends of the thick-wall cable are stripped by a preset length, and only core wires are reserved; the first end of the thick-wall cable retaining core wire is connected with the sensor probe assembly through a first locking structure, and the second end of the thick-wall cable retaining core wire is connected with the connector assembly through a second locking structure. The sensor probe assembly and the connector assembly are connected through a thick-wall cable and a locking structure, the thick-wall cable can resist external foreign matter injury through a thick protection layer of the cable, after the thick-wall cable is adopted, a rubber wire protection sleeve does not need to be used for protection, and the problem that a gap exists between a wire protection pipe and the cable is fundamentally solved; and the thick-wall cable is locked and connected by adopting a locking structure, so that the situation that the sensor cable is abraded and even fractured due to friction generated in the operation process can be effectively avoided.

Description

Technical Field

[0001] This application relates to the field of rail transit sensor equipment, specifically a thick-walled cable sensor. Background Technology

[0002] In the rail transit sector, high-speed trains are renowned for their high-speed operation. However, rotating components of the running gear, such as axle boxes and motors, are prone to overheating and excessive vibration and impact during high-speed operation, leading to frequent failures of critical components like motors and gearboxes, seriously threatening train safety. To ensure the safe operation of high-speed trains, sensors are typically used to monitor the temperature, vibration, and impact signals of these vulnerable rotating components. Once an abnormal signal is detected, the system will issue a timely warning to prevent the train from operating in a faulty state. For better signal acquisition, sensor probes are generally installed in the axle boxes and gearboxes of the bogie. Since the vibration resistance of the sensor connectors is insufficient, they are usually installed under the car body. The sensor cable connects the probe and the connector, suspended below the car body. Current sensor connections primarily use thin-walled cables, protected by a rubber sheath. This sheath consists of multiple layers of rubber and reinforcing layers, with both ends fixed to the sensor probe and the connector tail, respectively. The entire cable is encased inside the sheath to prevent damage from foreign objects. While this solution addresses the issue of external impact on the cable to some extent, the gap between the rubber sheath and the cable, coupled with the frequent displacement of the train bogie and body during operation, leads to asynchronous movement between them. Typically, when installing sensors, the rubber sheath is fixed in an "S" shape, while the internal cable remains unsecured. This asynchronous movement causes friction between the rubber sheath and the cable. Since the cable sheath is much thinner than the rubber sheath, prolonged friction will cause wear. Once the cable sheath is completely worn away, exposing the cable core, the core will continue to rub against the rubber sheath, potentially leading to broken strands or even complete cable breakage, resulting in signal loss.

[0003] The existing cables used are generally thin-walled cables, so rubber protective tubes need to be installed on the outside of the cables. Although this can protect the cables to a certain extent, the gap between the protective tube and the cable causes friction during operation, resulting in cable wear or even breakage, which reduces the reliability of the sensors. Utility Model Content

[0004] This application provides a thick-walled cable sensor in which the sensor probe assembly and the connector assembly are connected by a thick-walled cable and a locking structure. The thick-walled cable has a thick protective layer, which can resist damage from external foreign objects, thus fundamentally solving the problem of cable damage caused by friction between the cable and the rubber protective tube in existing thick-walled cable sensors.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A thick-walled cable sensor includes a sensor probe assembly, a thick-walled cable, and a connector assembly;

[0007] The thick-walled cable is stripped at both ends for a predetermined length, leaving only the core wire;

[0008] The sensor probe assembly includes a housing, a circuit board, and a sensing device assembly. A cable outlet is provided on one side of the housing, and the circuit board and sensing device assembly are disposed inside the housing.

[0009] The sensor further includes a first locking structure, which is disposed at the cable outlet of the housing and is interference-fitted with the cable outlet; the first locking structure has a wire through hole, through which the first end of the thick-walled cable with only the core wire is inserted and electrically connected to the sensor circuit board and the sensitive device assembly; the first locking structure is crimped with the thick-walled cable;

[0010] The sensor also includes a second locking structure, which has a wire hole. The thick-walled cable, with only the second end of the core wire remaining, passes through the second locking structure and is electrically connected to the connector assembly. The thick-walled cable is crimped to the second locking structure.

[0011] Furthermore, the first locking structure includes a clamping cap, which has a cable passage hole for the cable to pass through; the end of the clamping cap near the housing is provided with a plate, which is press-fitted to the cable outlet of the housing; the end of the clamping cap away from the housing can be deformed by applying pressure to hold the cable.

[0012] Furthermore, the first locking structure also includes a first insulating sleeve, which is disposed within the wire passage hole of the compression cap and located at one end near the insert plate. The outer wall of the first insulating sleeve fits against the inner wall of the compression cap to prevent the cable core wire from conducting with the compression cap. The first locking structure also includes a first tail sheath, which is disposed within the wire passage hole of the compression cap and located at one end away from the outer shell. The outer wall of the first tail sheath fits against the inner wall of the compression cap to prevent the tail end cut of the compression cap from directly contacting the cable, thus protecting the cable. Both the first insulating sleeve and the first tail sheath are provided with wire passage holes for the cable to pass through.

[0013] Furthermore, the inner wall of the end of the compression cap away from the outer shell is provided with a stepped surface, and the inner diameter of the part of the compression cap with the stepped surface is larger than the inner diameter of other parts of the compression cap; the first tail sheath is provided with a limiting extension edge, and the limiting extension edge of the first tail sheath is adapted to the stepped surface of the compression cap; the cable passes through the wire hole of the first tail sheath and abuts against the first insulating sleeve, and the portion of the cable with only the core wire continues to pass through the wire hole of the first insulating sleeve and is electrically connected to the circuit board and the sensitive device assembly.

[0014] Furthermore, between the first insulating sleeve and the first tail sleeve, the inner wall of the compression cap is provided with barbs.

[0015] Further, the second locking structure includes a clamping cap, a locking cap, and a clamping adapter; the clamping cap is inserted into the inner cavity of the clamping adapter and rotatably connected to the clamping adapter; the locking cap has an internal thread, and the clamping adapter has an external thread that matches the internal thread; one end of the locking cap near the sensor probe assembly has a locking cap edge extending radially inward along the locking cap, so that when the locking cap is locked onto the clamping adapter, the clamping cap and the clamping adapter are rotatably connected and cannot be detached; the cable passes through the clamping cap, and only the second end of the core wire is electrically connected to the connector assembly; the end of the clamping cap away from the outer shell can be deformed by applying pressure to hold the cable; the clamping adapter is connected to the connector assembly.

[0016] Furthermore, a second insulating sleeve is provided inside the compression cap at the end away from the sensor probe assembly. The outer wall of the second insulating sleeve fits against the inner wall of the compression cap to prevent the core wire of the thick-walled cable from conducting with the compression cap. A second tail sheath is provided inside the compression cap at the end near the sensor probe assembly. The outer wall of the second tail sheath fits against the inner wall of the compression cap to prevent its tail end from directly contacting the cable and to protect the cable. Both the second insulating sleeve and the second tail sheath are provided with wire passage holes for the cable to pass through.

[0017] Furthermore, the inner wall of the end of the clamping cap near the sensor probe assembly is provided with a first stepped surface, and the inner diameter of the part of the clamping cap with the first stepped surface is larger than the inner diameter of other parts of the clamping cap; the second tail sheath is provided with a limiting extension edge, and the limiting extension edge of the second tail sheath is adapted to the first stepped surface of the clamping cap; the cable passes through the wire hole of the second tail sheath and abuts against the second insulating sleeve, and the portion of the thick-walled cable with only the core wires remaining continues to pass through the wire hole of the second insulating sleeve and is electrically connected to the connector assembly.

[0018] Furthermore, between the second insulating sleeve and the second tail sleeve, the inner wall of the compression cap is provided with barbs.

[0019] Furthermore, at one end of the clamping adapter connected to the clamping cap, an annular groove is provided on its inner cavity wall, and an annular protrusion is provided on the clamping cap to be in clearance fit with the annular groove; the inner diameter of the locking cap edge is smaller than the outer diameter of the annular protrusion, and the axial length of the annular protrusion is smaller than the axial depth of the annular groove; the portion of the clamping cap with the annular boss extends radially inward to form a second stepped surface; the end of the second insulating sleeve near the sensor probe assembly has an edge, which abuts against the second stepped surface; the cable abuts against the edge of the second insulating sleeve, and the portion of the thick-walled cable with only the core wires remaining continues to pass through the wire hole of the second insulating sleeve and is electrically connected to the connector assembly.

[0020] Furthermore, an O-ring is provided at the mating point between the clamping cap and the clamping adapter; the connector assembly includes a connector and a connector joint; one end of the connector joint is connected to the connector, and the other end is connected to the clamping adapter; a rubber plug is also provided between the clamping adapter and the connector joint; the second end of the thick-walled cable, with only the core wire remaining, is electrically connected to the connector.

[0021] Furthermore, a special adhesive is filled between the compression cap and the thick-walled cable, and the special adhesive is filled between the thick-walled cable and the compression cap.

[0022] Beneficial effects:

[0023] This application relates to a thick-walled cable sensor, including a sensor probe assembly, a thick-walled cable, and a connector assembly. The thick-walled cable is stripped at both ends by a predetermined length, retaining only the core wire. A first locking structure is provided at the first end of the thick-walled cable with the core wire remaining to press tightly connect to the sensor probe assembly; a second locking structure is provided at the second end of the thick-walled cable with the core wire remaining to press tightly connect to the connector assembly. In this sensor, the sensor probe assembly and the connector assembly are connected by a thick-walled cable and locking structures. The thick-walled cable, with its inherent thick protective layer, can resist damage from external foreign objects. Using a thick-walled cable eliminates the need for rubber sheathing, fundamentally solving the problem of gaps between the sheath and the cable, and the cable being worn by the sheath. Simultaneously, to meet the installation requirements of the thick-walled cable, a first locking structure and a second locking structure are provided. The sensor has good overall integrity and can effectively prevent friction during operation, thus avoiding cable wear or even breakage and effectively improving the reliability of the sensor. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the combination of the first locking structure and the second locking structure in a thick-walled cable sensor according to this application.

[0026] Figure 2 for Figure 1 A cross-sectional schematic diagram of the connection between the thick-walled cable and the connector assembly in the sensor;

[0027] Among them, 1. front cover plate, 2. circuit board, 3. straight base housing, 4. non-removable screw, 5. first insulating sleeve, 6. clamping cap, 7. tail sleeve, 8. second insulating sleeve, 9. locking cap, 10. clamping cap, 11. O-ring, 12. clamping adapter, 13. rubber plug, 14. platinum resistance probe, 15. thick-walled cable, 16. connector joint, 17. connector. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0032] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0033] The embodiments in this application are written in a progressive manner.

[0034] See Figures 1 to 2 This utility model provides a thick-walled cable sensor, including a sensor probe assembly, a thick-walled cable, and a connector assembly;

[0035] The thick-walled cable is stripped at both ends for a predetermined length, leaving only the core wire;

[0036] The sensor probe assembly includes a housing, a circuit board, and a sensing device assembly. A cable outlet is provided on one side of the housing, and the circuit board and sensing device assembly are disposed inside the housing.

[0037] The sensor further includes a first locking structure, which is disposed at the cable outlet of the housing and is interference-fitted with the cable outlet; the first locking structure has a wire through hole, through which the first end of the thick-walled cable with only the core wire is inserted and electrically connected to the sensor circuit board and the sensitive device assembly; the first locking structure is crimped with the thick-walled cable;

[0038] The sensor also includes a second locking structure, which has a wire hole. The thick-walled cable, with only the second end of the core wire remaining, passes through the second locking structure and is electrically connected to the connector assembly. The thick-walled cable is crimped to the second locking structure.

[0039] In this sensor application, the sensor probe assembly and connector assembly are connected by a thick-walled cable and a locking structure. The thick-walled cable, with its inherent thick protective layer, can resist damage from external foreign objects. Using a thick-walled cable eliminates the need for a rubber sheath, fundamentally solving the problem of gaps between the sheath and the cable. That is, after installation, there is no relative movement between the core wire and the outer sheath, fundamentally solving the problem of cable breakage caused by friction between the cable and the rubber sheath. Simultaneously, to meet the installation requirements of the thick-walled cable, a first locking structure and a second locking structure are provided. The sensor has good overall integrity and effectively prevents friction during operation, thus avoiding cable wear or even breakage and significantly improving sensor reliability.

[0040] Thick-walled cables generally refer to cables with a thicker sheath layer on the outside of the cable core. In the rail transit industry, the European standard EN50264-3-2002 specifies the sheath thickness of standard wall-thickness cables. Cables with a sheath thickness greater than that of standard wall-thickness cables are generally referred to as thick-walled cables. In this scheme, thick-walled cables can have a sheath thickness greater than twice that of the standard wall thickness.

[0041] Furthermore, the first locking structure includes a clamping cap with a cable passage hole for the cable to pass through; a plate is provided at one end of the clamping cap near the housing, and the plate is press-fitted to the cable outlet of the housing; the end of the clamping cap away from the housing can be deformed by applying pressure to hold the cable tightly. This first locking structure is based on the sensor probe assembly structure in the applicant's prior art patent CN202221777014.0, and improved upon based on problems found in actual engineering applications to meet the installation requirements of thick-walled cables, effectively improving the reliability of the sensor.

[0042] The first locking structure further includes a first insulating sleeve, which is disposed within the wire passage hole of the compression cap and located at one end near the insert plate. The outer wall of the first insulating sleeve is fitted against the inner wall of the compression cap to prevent the cable core wire from conducting with the compression cap. The first locking structure also includes a first tail sheath, which is disposed within the wire passage hole of the compression cap and located at one end away from the outer shell. The outer wall of the first tail sheath is fitted against the inner wall of the compression cap to prevent the tail end cut of the compression cap from directly contacting the cable and protecting the cable. Both the first insulating sleeve and the first tail sheath are provided with wire passage holes for the cable to pass through.

[0043] The inner wall of the end of the compression cap away from the outer shell has a stepped surface, and the inner diameter of the part of the compression cap with the stepped surface is larger than the inner diameter of other parts of the compression cap; the first tail sheath has a limiting extension edge, and the limiting extension edge of the first tail sheath is adapted to the stepped surface of the compression cap; the cable passes through the wire hole of the first tail sheath and abuts against the first insulating sleeve, and the portion of the cable with only the core wire continues to pass through the wire hole of the first insulating sleeve and is electrically connected to the circuit board and the sensitive device assembly.

[0044] The compression cap, by setting a first insulating sleeve, can prevent the cable shield from discharging with the compression cap; the compression cap, by setting a first tail sleeve, can prevent its tail end from directly contacting the cable, thus protecting the cable.

[0045] Furthermore, between the first insulating sleeve and the first tail sheath, the inner wall of the compression cap is provided with barbs. The barbs are preferably fish-scale shaped; the barb structure effectively enhances the clamping force on the cable after the compression cap is applied.

[0046] In the sensor probe assembly, the sensing element assembly includes a vibration and shock sensing element; a circuit board is fixedly disposed inside the housing, and the vibration and shock sensing element is disposed on the circuit board and electrically connected to the circuit board; the sensing element assembly also includes a temperature sensing element disposed at the bottom of the housing, the temperature sensing element is a temperature probe, the temperature probe is disposed at the bottom of the housing, the bottom of the housing has a mounting hole, the temperature probe is disposed in the mounting hole and electrically connected to the circuit board inside the housing; the temperature probe is preferably disposed of with a non-detachable screw structure for mounting and connecting to the housing; the temperature probe is preferably a platinum resistance probe.

[0047] The housing of this application is a straight base housing. One side of the housing has a cable outlet, and the other side has a front opening with a cover plate. The front end of the clamping cap is laser-welded to the straight base via an interference fit using a insert. The rear end of the clamping cap can grip the cable by applying pressure and deformation. Special adhesive is filled between the cable and the clamping cap to achieve waterproofing and reinforce the connection. The clamping cap, with its first insulating sleeve, prevents discharge between the cable shield and the clamping cap, improving the sensor's withstand voltage. The clamping cap, with its first tail guard, prevents direct contact between the tail end and the cable, protecting the cable. Specifically, the thick-walled cable is stripped to a predetermined length, leaving only the core wire. A clamping cap is then fitted onto the cable, and the cable core wire is soldered to the sensor motherboard pads. The first insulating sleeve is then deformed, passed through the sensor motherboard, and fitted between the cable and the motherboard. The temperature probe is a platinum resistance probe, with its temperature core wire soldered together with a pre-fabricated platinum resistance probe. The temperature probe is pressed into a straight base and laser-welded. The sensor motherboard is then installed into the straight base and laser-welded in place. The clamping cap is pressed into the straight base and laser-welded in place. Finally, a special adhesive is applied to the outer circumference of the cable, and a hydraulic press is used to compress the clamping cap, deforming it to tightly grip the cable. The clamping cap contains fish-scale-shaped barbs, which effectively enhance the clamping force on the cable after compression.

[0048] Further, the second locking structure includes a clamping cap, a locking cap, and a clamping adapter; the clamping cap is inserted into the inner cavity of the clamping adapter and rotatably connected to the clamping adapter; the locking cap has an internal thread, and the clamping adapter has an external thread that matches the internal thread; one end of the locking cap near the sensor probe assembly has a locking cap edge extending radially inward along the locking cap, so that when the locking cap is locked onto the clamping adapter, the clamping cap and the clamping adapter are rotatably connected and cannot be detached; the cable passes through the clamping cap, and only the second end of the core wire is electrically connected to the connector assembly; the end of the clamping cap away from the outer shell can be deformed by applying pressure to hold the cable; the clamping adapter is connected to the connector assembly.

[0049] The end of the compression cap furthest from the sensor probe assembly has a second insulating sleeve. The outer wall of the second insulating sleeve fits against the inner wall of the compression cap to prevent the core wire of the thick-walled cable from conducting through the compression cap. The end of the compression cap closest to the sensor probe assembly has a second tail sheath. The outer wall of the second tail sheath fits against the inner wall of the compression cap to prevent its tail end from directly contacting the cable and to protect the cable. Both the second insulating sleeve and the second tail sheath have wire holes for the cable to pass through.

[0050] The inner wall of the end of the clamping cap near the sensor probe assembly has a first stepped surface, and the inner diameter of the part of the clamping cap with the first stepped surface is larger than the inner diameter of other parts of the clamping cap; the second tail sheath has a limiting extension edge, and the limiting extension edge of the second tail sheath is adapted to the first stepped surface of the clamping cap; the cable passes through the wire hole of the second tail sheath and abuts against the second insulating sleeve, and the portion of the thick-walled cable with only the core wires remaining continues to pass through the wire hole of the second insulating sleeve and is electrically connected to the connector assembly.

[0051] Between the second insulating sleeve and the second tail sheath, the inner wall of the compression cap is provided with barbs.

[0052] The end of the clamping adapter connected to the clamping cap has an annular groove in its inner wall, and the clamping cap has an annular protrusion that fits into the annular groove with a clearance fit. The inner diameter of the locking cap edge is smaller than the outer diameter of the annular protrusion, and the axial length of the annular protrusion is smaller than the axial depth of the annular groove. The part of the clamping cap with the annular boss extends radially inward to form a second stepped surface. The end of the second insulating sleeve near the sensor probe assembly has an edge that abuts against the second stepped surface. The cable abuts against the edge of the second insulating sleeve, and the portion of the thick-walled cable with only the core wires remaining continues to pass through the wire hole of the second insulating sleeve and is electrically connected to the connector assembly.

[0053] The compression cap, by providing a second insulating sleeve, prevents discharge between the cable shield and the compression cap; the compression cap, with its second tail sleeve, prevents direct contact between its tail end and the cable, thus protecting the cable. An O-ring is also provided at the mating point between the compression cap and the compression adapter; the connector assembly includes a connector and a connector joint; one end of the connector joint connects to the connector, and the other end connects to the compression adapter; a rubber plug is also provided between the compression adapter and the connector joint; the second end of the thick-walled cable, retaining only the core wire, is electrically connected to the connector.

[0054] An O-ring is provided at the mating point between the compression cap and the compression adapter, and a rubber plug is provided between the compression adapter and the connector to achieve a sealing and waterproof effect; special adhesive is filled between the thick-walled cable and the compression cap to achieve waterproofing and strengthen the connection.

[0055] It should be noted that the second locking structure is set with reference to the tail component in the existing patent CN213120632U; this application has made modifications based on the above patent to meet the installation requirements of thick-walled cables.

[0056] The main components of the thick-walled cable sensor of this utility model include: a front cover plate 1, a circuit board 2, a straight base housing 3, a non-removable screw 4, a first insulating sleeve 5, a clamping cap 6, a tail sleeve 7, a second insulating sleeve 8, a locking cap 9, a clamping cap 10, an O-ring 11, a clamping adapter 12, a rubber plug 13, a platinum resistance probe 14, a thick-walled cable 15, a connector joint 16, and a connector 17.

[0057] This utility model's thick-walled cable sensor, through its innovative design, achieves several technical advantages, significantly improving the sensor's performance and reliability. Firstly, the use of a thick-walled cable enhances protection against external foreign object impacts, while eliminating the gap between the traditional rubber sheath and the cable, reducing relative movement between the core wire and the outer sheath, and effectively preventing cable breakage. Secondly, the design of the first and second locking structures improves the sensor's overall integrity and stability, preventing cable wear and breakage due to friction during operation. Furthermore, simplified installation steps and laser welding fixing technology make sensor installation and maintenance more convenient. The first insulating sleeve and first tail sheath improve the sensor's pressure resistance while protecting the cable from damage. The introduction of the barbed structure enhances the cable's clamping force, ensuring connection stability. This thick-walled cable sensor meets the low-smoke, halogen-free requirements of the rail transit industry and adapts to the high standards of this specific industry. Through the use of O-rings, rubber plugs, and special adhesives, the sensor's waterproof performance is improved, making it suitable for humid or underwater environments. In summary, the thick-walled cable sensor of this invention possesses excellent protective performance, high reliability, easy installation and maintenance, pressure resistance, and waterproof characteristics.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thick-walled cable sensor, characterized in that, Includes sensor probe assemblies, thick-walled cables, and connector assemblies; The thick-walled cable is stripped at both ends for a predetermined length, leaving only the core wire; The sensor probe assembly includes a housing, a circuit board, and a sensing device assembly. A cable outlet is provided on one side of the housing, and the circuit board and sensing device assembly are disposed inside the housing. The sensor further includes a first locking structure, which is disposed at the cable outlet of the housing and is interference-fitted with the cable outlet; the first locking structure has a wire through hole, through which the first end of the thick-walled cable with only the core wire is inserted and electrically connected to the sensor circuit board and the sensitive device assembly; the first locking structure is crimped with the thick-walled cable; The sensor also includes a second locking structure, which has a wire hole. The thick-walled cable, with only the second end of the core wire remaining, passes through the second locking structure and is electrically connected to the connector assembly. The thick-walled cable is crimped to the second locking structure.

2. The thick-walled cable sensor according to claim 1, characterized in that, The first locking structure includes a clamping cap with a cable passage hole for the cable to pass through; a plate is provided at one end of the clamping cap near the housing, and the plate is press-fitted to the cable outlet of the housing; the end of the clamping cap away from the housing can be deformed by applying pressure to hold the cable.

3. The thick-walled cable sensor according to claim 2, characterized in that, The first locking structure further includes a first insulating sleeve, which is disposed within the wire passage hole of the compression cap and located at one end near the insert plate. The outer wall of the first insulating sleeve is fitted against the inner wall of the compression cap to prevent the cable core wire from conducting with the compression cap. The first locking structure also includes a first tail sheath, which is disposed within the wire passage hole of the compression cap and located at one end away from the outer shell. The outer wall of the first tail sheath is fitted against the inner wall of the compression cap to prevent the tail end cut of the compression cap from directly contacting the cable and protecting the cable. Both the first insulating sleeve and the first tail sheath are provided with wire passage holes for the cable to pass through.

4. The thick-walled cable sensor according to claim 3, characterized in that, The inner wall of the end of the compression cap away from the outer shell has a stepped surface, and the inner diameter of the part of the compression cap with the stepped surface is larger than the inner diameter of other parts of the compression cap; the first tail sheath has a limiting extension edge, and the limiting extension edge of the first tail sheath is adapted to the stepped surface of the compression cap; the cable passes through the wire hole of the first tail sheath and abuts against the first insulating sleeve, and the portion of the cable with only the core wire continues to pass through the wire hole of the first insulating sleeve and is electrically connected to the circuit board and the sensitive device assembly.

5. The thick-walled cable sensor according to claim 4, characterized in that, Between the first insulating sleeve and the first tail sleeve, the inner wall of the compression cap is provided with barbs.

6. The thick-walled cable sensor according to any one of claims 1-5, characterized in that, The second locking structure includes a clamping cap, a locking cap, and a clamping adapter; the clamping cap is inserted into the inner cavity of the clamping adapter and rotatably connected to the clamping adapter; the locking cap has an internal thread, and the clamping adapter has an external thread that matches the internal thread; one end of the locking cap near the sensor probe assembly has a locking cap edge extending radially inward along the locking cap, so that when the locking cap is locked onto the clamping adapter, the clamping cap and the clamping adapter are rotatably connected and cannot be detached; the cable passes through the clamping cap, and only the second end of the core wire is electrically connected to the connector assembly; the end of the clamping cap away from the outer shell can be deformed by applying pressure to hold the cable; the clamping adapter is connected to the connector assembly.

7. The thick-walled cable sensor according to claim 6, characterized in that, The end of the compression cap furthest from the sensor probe assembly has a second insulating sleeve. The outer wall of the second insulating sleeve fits against the inner wall of the compression cap to prevent the core wire of the thick-walled cable from conducting through the compression cap. The end of the compression cap closest to the sensor probe assembly has a second tail sheath. The outer wall of the second tail sheath fits against the inner wall of the compression cap to prevent its tail end from directly contacting the cable and to protect the cable. Both the second insulating sleeve and the second tail sheath have wire holes for the cable to pass through.

8. The thick-walled cable sensor according to claim 7, characterized in that, The inner wall of the end of the clamping cap near the sensor probe assembly has a first stepped surface, and the inner diameter of the part of the clamping cap with the first stepped surface is larger than the inner diameter of other parts of the clamping cap; the second tail sheath has a limiting extension edge, and the limiting extension edge of the second tail sheath is adapted to the first stepped surface of the clamping cap; the cable passes through the wire hole of the second tail sheath and abuts against the second insulating sleeve, and the portion of the thick-walled cable with only the core wires remaining continues to pass through the wire hole of the second insulating sleeve and is electrically connected to the connector assembly.

9. The thick-walled cable sensor according to claim 8, characterized in that, Between the second insulating sleeve and the second tail sheath, the inner wall of the compression cap is provided with barbs.

10. The thick-walled cable sensor according to claim 8, characterized in that, The end of the clamping adapter connected to the clamping cap has an annular groove in its inner wall, and the clamping cap has an annular protrusion that fits into the annular groove with a clearance fit. The inner diameter of the locking cap edge is smaller than the outer diameter of the annular protrusion, and the axial length of the annular protrusion is smaller than the axial depth of the annular groove. The part of the clamping cap with the annular boss extends radially inward to form a second stepped surface. The end of the second insulating sleeve near the sensor probe assembly has an edge that abuts against the second stepped surface. The cable abuts against the edge of the second insulating sleeve, and the portion of the thick-walled cable with only the core wires continues to pass through the wire hole of the second insulating sleeve and is electrically connected to the connector assembly.

11. The thick-walled cable sensor according to claim 10, characterized in that, An O-ring is provided at the mating point between the compression cap and the compression adapter; the connector assembly includes a connector and a connector joint; one end of the connector joint is connected to the connector and the other end is connected to the compression adapter; a rubber plug is provided between the compression adapter and the connector joint; the second end of the thick-walled cable, with only the core wire remaining, is electrically connected to the connector.

12. The thick-walled cable sensor according to claim 8, characterized in that, A special adhesive is used to fill the space between the compression cap and the thick-walled cable.

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