Wire winding device and wire pulling sensor

Abstract

The application relates to the technical field of winding, in particular to a winding device and a pulling line sensor. The winding device comprises a winding wheel which can rotate around an axis thereof and is used for winding or unwinding a wire bundle; a guide assembly is arranged on one side of the outer periphery of the winding wheel; the guide assembly is provided with a lead-through channel through which the wire bundle passes; when the winding wheel winds or unwinds the wire bundle, the wire bundle has a transition holding section which extends from the lead-through channel to the winding wheel, and the extension direction of the transition holding section is tangent to the outer periphery of the winding wheel. The winding device guides and restricts the winding and unwinding process of the wire bundle through the guide assembly, effectively avoids the lateral swing problem of the wire bundle in the traditional structure, reduces the risk of wire bundle abrasion, and prolongs the service life of the wire bundle. Meanwhile, the influence of the lateral force on the winding wheel is effectively isolated, so that the lateral force cannot be transmitted to the winding wheel, that is, the lateral force cannot be transmitted to the rotating shaft.

Description

Technical Field

[0001] This application relates to the field of wire winding technology, and more specifically, to a wire winding device and a wire pulling sensor. Background Technology

[0002] A draw-wire sensor is a precision measuring device that converts linear displacement into an electrical signal. Due to its flexible installation, large measuring range, and compact structure, it is widely used in displacement and position feedback and control in many fields such as industrial automation, engineering machinery, gate opening, stage equipment, and warehousing and logistics.

[0003] However, external draw-wire sensors have a prominent problem in practical applications: the draw-wire harness lacks effective radial guidance constraint during extension and retraction. When there is non-axial lateral swaying or vibration at the connection point between the draw-wire harness and the object being measured, this lateral force is directly transmitted to the rotation axis of the draw-wire sensor, thus affecting the measurement accuracy of the draw-wire sensor and leading to a decrease in reliability. Utility Model Content

[0004] In view of this, this application aims to provide a wire winding device and a wire pull sensor, which can solve the problem in the related art that the lack of constraint on the wire harness affects the measurement accuracy of the wire pull sensor and leads to a decrease in reliability, thereby improving the measurement accuracy and durability of the wire pull sensor.

[0005] To achieve the above objectives, the first aspect of this application provides a winding device.

[0006] A second aspect of this application provides a pull-wire sensor.

[0007] According to a first aspect of this application, a winding device is provided, comprising: a winding wheel rotatable about its own axis for winding or unwinding a wire harness; a guide assembly disposed on one side of the outer circumference of the winding wheel; the guide assembly having a lead channel for the wire harness to pass through; and the wire harness having a transition holding section extending from the lead channel to the winding wheel when the winding wheel winds or unwinds the wire harness, the transition holding section extending in a direction tangent to the outer circumference of the winding wheel.

[0008] In the above technical solution, by setting up a guiding component to guide and constrain the winding and unwinding process of the wire harness, the lateral swaying problem that easily occurs in traditional structures is effectively avoided, thereby reducing the risk of wire harness wear and extending the service life of the wire harness. Simultaneously, the influence of lateral forces on the winding wheel is effectively isolated, ensuring that lateral forces are not transmitted to the winding wheel, i.e., not to the rotation shaft. Therefore, measurement errors caused by lateral forces can be prevented, thus improving the measurement accuracy of the pull-wire sensor. Furthermore, this design reduces the requirements for the motion trajectory of the measured object, improving installation tolerance. Even with certain angular deviations or motion trajectory wobbling, the pull-wire sensor can still operate stably, reducing installation and debugging time and accuracy requirements, enabling the pull-wire sensor to work stably and reliably under various complex working conditions.

[0009] In some technical solutions, optionally, the guide assembly includes: a fixed bracket; at least one first guide member connected to the fixed bracket and located on one side of the outer circumference of the winding wheel; at least one second guide member located below the first guide member; in the radial direction of the winding wheel, at least one second guide member and at least one first guide member are arranged side by side; the gap between the first guide member and the second guide member forms a lead wire channel.

[0010] In the above technical solution, the fixed bracket serves as the basic support structure for the entire guiding assembly. The first guide member is the "upper boundary" of the lead wire channel, and the second guide member is the "lower boundary" of the lead wire channel; the gap between them forms the lead wire channel that constrains the wire harness. When the wire harness is wound and unwound on the winding wheel, it passes through the lead wire channel. The guiding effect of the lead wire channel ensures that the wire harness always moves along a predetermined path, avoiding friction and collision between the wire harness and the winding wheel or other components. At the same time, this structure can also effectively isolate the lateral forces that may be generated during the winding and unwound process, preventing lateral forces from interfering with the rotation axis of the winding wheel, thereby ensuring the accuracy and stability of the wire sensor measurement.

[0011] In some technical solutions, optionally, the first guide member includes a first body and at least two first limiting rings, the at least two first limiting rings being respectively disposed at both ends of the first body along the axial direction of the winding wheel; and / or the second guide member includes a second body and at least two second limiting rings, the at least two second limiting rings being disposed at both ends of the second body along the axial direction of the winding wheel.

[0012] In the above technical solution, the movement range of the wire harness can be constrained in the axial direction of the winding wheel by the first limiting ring and / or the second limiting ring, so that the wire harness can only move between the two first limiting rings and / or the two second limiting rings, thereby reducing the possibility of wire harness slippage and avoiding friction between the wire harness and other components.

[0013] In some technical solutions, the fixing bracket may optionally include: a first mounting base and a second mounting base; the first mounting base and the second mounting base are arranged at a relative interval along the axial direction of the winding wheel; wherein the first guide member and the second guide member are connected between the first mounting base and the second mounting base.

[0014] In the above technical solution, the guide assembly can be assembled, debugged, and replaced as an independent module, thereby simplifying the manufacturing, maintenance, and repair processes. Furthermore, the two mounting brackets provide stable axial support, resulting in high overall rigidity of the guide assembly and better resistance to lateral and axial forces transmitted by the wiring harness.

[0015] In some technical solutions, the guide assembly includes two first guide members and one second guide member. The two first guide members are arranged side by side along the extension direction of the transition holding section; the second guide member is located below one of the two first guide members away from the winding wheel.

[0016] In the above technical solution, two first guide members are arranged side by side along the extension direction of the transition holding section; a second guide member is located below one of the first guide members, and the three form a triangular support. The three guide members distribute the contact force of the wire harness to three points, which on the one hand can avoid excessive wear caused by excessive force at a single point; on the other hand, the first guide member near the winding wheel can guide the wire harness, thereby ensuring that the wire harness always moves tangentially along the winding wheel during the winding and unwinding process.

[0017] In some technical solutions, the winding device may optionally include a stop member connected to the lead-out end of the wire harness; wherein, when the winding wheel winds the wire harness, the stop member is adapted to be blocked by the guide assembly.

[0018] In the above technical solution, the stop will contact and be blocked by the guide component, thereby limiting the wire harness to continue to be wound towards the winding wheel, ensuring that the wire harness has a reasonable winding range on the winding wheel, avoiding the wire harness from being over-wound and causing tangling or damage, and preventing the wire harness from being completely wrapped on the winding wheel and difficult to pull out for use.

[0019] According to a second aspect of this application, a pull-wire sensor is provided, comprising: a fixed base; a rotating shaft disposed on the fixed base and rotatable about the axial direction of the rotating shaft; a winding device as provided in any of the above technical solutions; and a wire harness wound on a winding wheel; wherein the winding wheel and the fixed base are rotatably connected, the rotating shaft and the winding wheel are drively connected, and a guide assembly is disposed on the fixed base. Thus, the pull-wire sensor possesses all the beneficial effects of any of the above technical solutions, which will not be elaborated further here.

[0020] In some technical solutions, optionally, the fixing base includes a base and an extension; the extension is located at the center of the base; the winding wheel has a first opening groove and a second opening groove at both ends along the axial direction; the extension extends through the first opening groove to the second opening groove; wherein, the pull wire sensor also includes a coil spring and an end cap; the end cap is disposed at the opening of the second opening groove; the coil spring is disposed in the second opening groove and has an inner end and an outer end, the inner end abutting against the extension and the outer end connecting to the winding wheel; the rotating shaft is connected to the end cap.

[0021] In the above technical solution, when the winding wheel rotates to wind or unwind the wire, the coil spring deforms and stores elastic potential energy. When the external driving force disappears or the winding wheel needs to be reset, the coil spring releases the stored elastic potential energy, driving the winding wheel to rotate in the opposite direction, thus achieving automatic reset of the wire harness. The end cap is located at the opening of the second slot, serving to protect the coil spring and preventing external dust and debris from entering the second slot, thereby extending the service life of the winding device. The rotating shaft is connected to the end cap. In this way, when the winding wheel rotates, it drives the end cap to rotate, which in turn drives the rotating shaft to rotate.

[0022] In some technical solutions, optionally, an electronic housing is provided on the side of the substrate away from the extension; wherein, the pull-wire sensor further includes: a magnetic component, disposed inside the electronic housing and connected to the rotating shaft; and a circuit board, disposed inside the electronic housing and disposed opposite to the magnetic component, for detecting changes in the magnetic field of the magnetic component.

[0023] In the above technical solution, measurement is achieved through the cooperation of magnetic components and sensing elements on the circuit board. There is no physical contact between the two, which realizes non-contact measurement and helps to improve the service life of the wire encoder.

[0024] In some technical solutions, the pull-wire sensor may optionally include a gear transmission assembly; the gear transmission assembly is disposed within the electronic housing and is connected to the rotating shaft for transmission; wherein, the magnetic component is disposed within the gear transmission assembly.

[0025] In the above technical solution, the rotation of the rotating shaft is accelerated or decelerated by a gear transmission assembly; the magnetic component generates a change in magnetic field as the gear transmission assembly rotates; the sensing element on the circuit board detects the change in magnetic field and converts it into an electrical signal, ultimately achieving accurate measurement of the wire harness length. By reasonably selecting the gear ratio, the rotational speed of the rotating shaft can be adjusted according to actual needs, thereby increasing the detection frequency of the circuit board's sensing element and improving the measurement accuracy and response speed.

[0026] In some technical solutions, the gear transmission assembly optionally includes: a main gear, which is fixedly connected to a rotating shaft; multiple planetary gears, which are arranged at intervals along the circumference of the main gear; one of the planetary gears meshes with the main gear, and the multiple planetary gears are sequentially connected and driven by a transmission wheel; wherein, the main gear and the multiple planetary gears are provided with magnetic components.

[0027] In the above technical solution, magnetic components are installed on the main gear and multiple planetary gears. Compared to installing magnetic components on only a single component, this significantly increases the frequency and complexity of magnetic field changes. When the main gear and planetary gears rotate, multiple magnetic components simultaneously generate magnetic field changes. The sensing element on the circuit board can detect richer magnetic field information, thereby improving detection sensitivity.

[0028] Additional aspects and advantages of the technical solutions of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0029] Figure 1 This is one of the structural schematic diagrams of a winding device according to some embodiments of this application;

[0030] Figure 2 This is one of the partial structural schematic diagrams of a winding device according to some embodiments of this application;

[0031] Figure 3 This is a second partial structural schematic diagram of a winding device according to some embodiments of this application;

[0032] Figure 4 This is one of the structural schematic diagrams of the pull-wire sensor according to some embodiments of this application;

[0033] Figure 5 This is a second schematic diagram of the structure of a pull-wire sensor according to some embodiments of this application;

[0034] Figure 6 A second schematic diagram of the structure of a winding device according to some embodiments of this application;

[0035] Figure 7 This application presents a schematic diagram of the structure of a winding device according to some embodiments.

[0036] Figure label:

[0037] 100 Winding device; 110 Winding reel; 111 First opening slot; 112 Second opening slot; 120 Guide assembly; 121 Lead wire channel; 122 Fixing bracket; 1221 First mounting base; 1222 Second mounting base; 123 First guide member; 1231 First body; 1232 First limiting ring; 124 Second guide member; 1241 Second body; 1242 Second limiting ring; 130 Stop member;

[0038] 200 Pull-wire sensor; 210 Mounting base; 211 Base; 212 Extension; 213 Electronic housing; 220 Rotating shaft; 230 Wiring harness; 231 Transition holding section; 232 Outlet terminal; 240 End cap; 250 Coil spring; 251 Inner end; 252 Outer end; 260 Magnetic component; 270 Circuit board; 280 Gear transmission assembly; 281 Main gear; 282 Planetary gear; 2821 First stage gear; 2822 Second stage gear; 2823 Third stage gear; 2824 Fourth stage gear; 283 Driven gear; 2831 First stage driven gear; 2832 Second stage driven gear; 2833 Third stage driven gear; 290 Cable. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] Currently, the pull-cord sensors we see are mainly divided into two categories:

[0042] 1. Built-in spring retraction type: The measuring wire harness is wound on an internal coiling spring mechanism. Its advantages are that the structure is closed and dustproof; however, its disadvantages are that the measuring range is limited by the size of the drum, the wire harness is prone to fatigue due to long-term bending and unwinding, and friction and wear are likely to occur near the wire outlet.

[0043] 2. External Type: The sensor body (containing an encoder or potentiometer) is separated from the wire harness retraction mechanism (such as a weight, external spring, etc.). One end of the wire harness is fixed to the rotating shaft of the wire sensor, and the other end is connected to an external moving part. Its advantages include a large measurement range, flexible wire harness routing, and convenient maintenance. However, a prominent problem exists in practical applications: the wire harness lacks effective radial guidance constraint during extension and retraction. When there is non-axial lateral swaying or vibration at the connection point between the wire harness and the measured object, this lateral force is directly transmitted to the rotating shaft of the wire sensor. This leads to the following problems:

[0044] (1) Measurement error: Friction between the wire rope and the outlet hole, or unexpected radial force on the bearing, causes fluctuations in the reading.

[0045] (2) Decreased reliability: Long-term lateral force accelerates the wear of the sensor's rotating shaft and bearings, shortening its service life.

[0046] (3) Installation limitations: The motion trajectory of the object being measured must be aligned with the height of the sensor output hole. The installation tolerance is poor, otherwise it will exacerbate the above problems.

[0047] Based on this, embodiments of this application provide a winding device that can effectively isolate lateral forces, ensure axial winding and unwinding of the wire harness, and improve the measurement accuracy and durability of the wire pull sensor.

[0048] The following is combined Figures 1 to 7 The winding device and wire pull sensor provided in this application will be described in detail through specific embodiments and application scenarios.

[0049] Reference Figure 1 , Figure 2 and Figure 3 This application provides a winding device 100, which includes a winding wheel 110 and a guide assembly 120.

[0050] The winding reel 110 is rotatable about its own axis and is used to wind or unwind the wire harness 230. A guide assembly 120 is disposed on one side of the outer circumference of the winding reel 110, and the guide assembly 120 has a lead channel 121 through which the wire harness 230 passes. When the winding reel 110 winds or unwinds the wire harness 230, the wire harness 230 has a transition holding section 231 that extends from the lead channel 121 to the winding reel 110, and the extending direction of the transition holding section 231 is tangent to the outer circumference of the winding reel 110.

[0051] Specifically, the winding wheel 110 is one of the core components of the winding device 100, and it can rotate around its own axis. When the winding wheel 110 rotates in one direction, the wire bundle 230 is wound around the winding wheel 110, realizing the winding operation of the wire bundle 230; when the winding wheel 110 rotates in the opposite direction, the wire bundle 230 wound on the winding wheel 110 is gradually unwound, completing the unwinding process of the wire bundle 230.

[0052] The guide assembly 120 is disposed on one side of the outer circumference of the winding reel 110 and has a lead channel 121 through which the wire harness 230 passes. During the winding and unwinding process, the wire harness 230 moves along the lead channel 121. The lead channel 121 guides the direction of the wire harness 230, ensuring that the wire harness 230 can be wound and unwound along a predetermined path and preventing the wire harness 230 from swaying laterally.

[0053] When the winding reel 110 winds or unwinds the wire harness 230, the wire harness 230 has a transition holding section 231, and the extension direction of the transition holding section 231 is tangent to the outer circumference of the winding reel 110. One end of the transition holding section 231 is at the orifice of the guide assembly 120, and the other end is at the tangent point of the winding reel 110. In other words, the section of the wire harness 230 that is suspended from the orifice of the lead channel 121 of the guide assembly 120 to the point (tangent point) where the wire harness 230 just contacts the winding reel 110 is the transition holding section 231.

[0054] The transition holding section 231 is parallel to the tangent of the winding wheel 110 at the tangent point. At this time, the tension direction of the wire harness 230 is along the tangential direction of the winding wheel 110. The radial component of the lateral force from the external load, when reaching this section of the wire harness 230, is canceled out by the guide assembly 120 and is not transmitted to the winding wheel 110. Consequently, after passing through the guide assembly 120, the wire harness 230 only generates a pure torque that rotates the winding wheel 110, without a radial component pointing towards the axis of rotation 220. This not only reduces the additional stress on the wire harness 230 during winding and unwinding, lowering the risk of damage due to excessive wear and thus increasing the service life of the wire harness 230; it also avoids deviations in sensor measurement data caused by lateral force interference, thereby improving measurement accuracy.

[0055] In the above embodiment, by setting the guide component 120 to guide and constrain the winding and unwinding process of the wire harness 230, the lateral swaying problem that is prone to occur in the wire harness 230 in the traditional structure is effectively avoided, thereby reducing the risk of wear of the wire harness 230 and extending its service life. At the same time, the influence of lateral force on the winding wheel 110 is effectively isolated, so that the lateral force will not be transmitted to the winding wheel 110, that is, it will not be transmitted to the rotating shaft 220. Therefore, measurement errors caused by lateral force can be prevented, thereby improving the measurement accuracy of the pull wire sensor 200. In addition, this design also reduces the requirements for the motion trajectory of the measured object and improves the fault tolerance of the installation. Even if there is a certain angular deviation or motion trajectory wobbling, the pull wire sensor 200 can still work stably, reducing the installation and debugging time and accuracy requirements, so that the pull wire sensor 200 can work stably and reliably under various complex working conditions.

[0056] In some embodiments, the guide assembly 120 includes a fixing bracket 122, at least one first guide member 123, and at least one second guide member 124.

[0057] At least one first guide member 123 is connected to the fixed bracket 122 and is located on one side of the outer circumference of the winding reel 110. At least one second guide member 124 is located below the first guide member 123; in the radial direction of the winding reel 110, at least one second guide member 124 and at least one first guide member 123 are arranged side by side. The gap between the first guide member 123 and the second guide member 124 forms a lead wire channel 121.

[0058] Specifically, the fixed bracket 122 serves as the basic support structure for the entire guide assembly 120. The first guide member 123 is the "upper boundary" of the lead wire channel 121, and the second guide member 124 is the "lower boundary" of the lead wire channel 121; the gap between the two forms the lead wire channel 121 that constrains the wire harness 230. It can be understood that the axial direction of the gap determines the extension direction of the transition holding section 231.

[0059] When the wire harness 230 is wound and unwound on the winding reel 110, it passes through the lead wire channel 121. The guiding effect of the lead wire channel 121 ensures that the wire harness 230 always moves along a predetermined path, avoiding friction and collision between the wire harness 230 and the winding reel 110 or other components. At the same time, this structure can also effectively isolate the lateral forces that may be generated during the winding and unwound process of the wire harness 230, preventing lateral forces from interfering with the rotation axis 220 of the winding reel 110, thereby ensuring the accuracy and stability of the measurement by the wire pull sensor 200.

[0060] Understandably, the first guide member 123, located at the top, is the main bearing point of the lateral force on the wire harness 230. Therefore, the number of first guide members 123 can be increased to enhance the resistance to lateral forces, constraining the lateral movement of the wire harness 230 from multiple positions, thereby reducing the swing amplitude of the wire harness 230. The second guide member 124, mainly cooperating with the first guide member 123 to form the lead channel 121, bears relatively less lateral force, and therefore its number can be relatively smaller. For example, there can be two first guide members 123 and one second guide member 124.

[0061] In some embodiments, the guide assembly 120 includes two first guides 123 and a second guide 124, the two first guides 123 being arranged side by side along the extension direction of the transition retaining section 231; the second guide 124 being disposed below one of the two first guides 123 away from the winding wheel 110.

[0062] In the above embodiment, two first guide members 123 are arranged side by side along the extension direction of the transition holding section 231; a second guide member 124 is located below one of the first guide members 123, and the three form a triangular support. The three guide members distribute the contact force of the wire harness 230 to three points, which can avoid excessive wear caused by excessive force at a single point; on the other hand, the first guide member 123 near the winding wheel 110 can guide the wire harness 230, thereby ensuring that the wire harness 230 always moves tangentially along the winding wheel 110 during winding and unwinding.

[0063] In some embodiments, the first guide member 123 includes a first body 1231 and at least two first limiting rings 1232. The at least two first limiting rings 1232 are respectively disposed at both ends of the first body 1231 along the axial direction of the winding wheel 110.

[0064] In practical applications, during the winding and unwinding process of the winding reel 110, the wire harness 230 is prone to axial displacement or even slippage, resulting in unstable movement of the wire harness 230. Therefore, in the above implementation, the first limiting ring 1232 can constrain the movement range of the wire harness 230 in the axial direction of the winding reel 110, so that the wire harness 230 can only move between the two first limiting rings 1232. This reduces the possibility of the wire harness 230 slipping and avoids friction between the wire harness 230 and other components.

[0065] In some embodiments, the second guide 124 includes a second body 1241 and at least two second limiting rings 1242, the second limiting rings 1242 being disposed at both ends of the second body 1241 along the axial direction of the winding wheel 110. It is understood that the second limiting rings 1242 can also constrain the movement range of the wire harness 230 along the axial direction of the winding wheel 110, ensuring that the wire harness 230 can only move between the two second limiting rings 1242. This reduces the possibility of the wire harness 230 slipping and avoids friction between the wire harness 230 and other components.

[0066] It is understandable that the first limiting ring 1232 and the second limiting ring 1242 can also work together to provide double protection for the safe retraction and extension of the wire harness 230.

[0067] In some implementations, the fixed bracket 122 includes a first mounting base 1221 and a second mounting base 1222, which are arranged at a relative interval along the axial direction of the winding reel 110. A first guide member 123 and a second guide member 124 are connected between the first mounting base 1221 and the second mounting base 1222.

[0068] In this way, the guide assembly 120 can be assembled, tested, and replaced as an independent module, thereby simplifying the manufacturing, maintenance, and repair process. In addition, the two mounting brackets 210 can provide stable axial support, making the guide assembly 120 have high overall rigidity and better able to resist the lateral and axial forces transmitted by the wiring harness 230.

[0069] Reference Figure 1 , Figure 6 and Figure 7 In some embodiments, the winding device 100 further includes a stop 130 connected to the lead-out end 232 of the wire harness 230; wherein, when the winding wheel 110 winds up the wire harness 230, the stop 130 is adapted to be blocked by the guide assembly 120.

[0070] Specifically, the stop 130 is connected to the lead-out end 232 of the wire harness 230. When the winding wheel 110 winds up the wire harness 230, as the wire harness 230 continuously winds around the winding wheel 110, the stop 130 moves along with the wire harness 230 towards the winding wheel 110. When the wire harness 230 is wound to a certain extent, the stop 130 contacts and is blocked by the guide component 120, thereby limiting the wire harness 230 from continuing to wind towards the winding wheel 110. This ensures that the wire harness 230 has a reasonable winding range on the winding wheel 110, preventing the wire harness 230 from being over-wound, causing tangled or damaged strands, and preventing the wire harness 230 from being difficult to pull out after being completely wound around the winding wheel 110.

[0071] In practical applications, the stop 130 can be a fixed block or a latch, etc.

[0072] Reference Figure 4 and Figure 5 In some embodiments, this application also provides a pull-wire sensor 200, the structure of which includes: a fixed base 210, a rotating shaft 220, a wire harness 230, and a winding device 100 provided in any of the above embodiments.

[0073] The rotating shaft 220 is mounted on the fixed base 210 and can rotate around the axial direction of the rotating shaft 220. The wire harness 230 is wound on the winding wheel 110. The winding wheel 110 and the fixed base 210 are rotatably connected, the rotating shaft 220 and the winding wheel 110 are drive-connected, and the guide assembly 120 is mounted on the fixed base 210.

[0074] Since the pull-wire sensor 200 has the winding device 100 provided in any of the above embodiments, it has all the beneficial effects of any of the above embodiments, which will not be repeated here.

[0075] In some embodiments, the fixing base 210 includes a base 211 and an extension 212; the extension 212 is located at the center of the base 211; the winding wheel 110 has a first opening groove 111 and a second opening groove 112 at both ends along the axial direction; the extension 212 extends through the first opening groove 111 to the second opening groove 112. The pull-wire sensor 200 also includes a coil spring 250 and an end cap 240; the end cap 240 is disposed at the opening of the second opening groove 112; the coil spring 250 is disposed within the second opening groove 112 and has an inner end 251 and an outer end 252, the inner end 251 abutting against the extension 212, and the outer end 252 connected to the winding wheel 110; the rotating shaft 220 is connected to the end cap 240.

[0076] In the above embodiment, the winding wheel 110 has a first opening groove 111 and a second opening groove 112 at both ends along the axial direction. The extension 212 extends through the first opening groove 111 to the second opening groove 112, so that the fixed seat 210 and the winding wheel 110 form a stable connection relationship in the axial direction.

[0077] A coil spring 250 is disposed within the second opening slot 112, having an inner end 251 and an outer end 252. The inner end 251 abuts against the extension 212, and the outer end 252 is connected to the winding wheel 110. When the winding wheel 110 rotates to wind or unwind the wire, the coil spring 250 deforms, storing elastic potential energy. When the external driving force disappears or the winding wheel 110 needs to be reset, the coil spring 250 releases the stored elastic potential energy, driving the winding wheel 110 to rotate in the opposite direction, thereby achieving automatic reset of the wire harness 230. An end cap 240 is disposed at the opening of the second opening slot 112, serving to protect the coil spring 250 and preventing external dust, debris, etc., from entering the second opening slot 112, thus extending the service life of the winding device 100. A rotating shaft 220 is connected to the end cap 240. In this way, when the winding wheel 110 rotates, it drives the end cap 240 to rotate, which in turn drives the rotating shaft 220 to rotate.

[0078] In practical applications, the first mounting base 1221 and the fixed base 210 are connected and fixed.

[0079] In some embodiments, the base 211 has an electronic housing 213 on the side opposite to the extension 212; wherein the pull-wire sensor 200 also includes a magnetic component 260 and a circuit board 270.

[0080] The magnetic component 260 is disposed inside the electronic housing 213 and connected to the rotating shaft 220; the circuit board 270 is disposed inside the electronic housing 213 and is disposed opposite to the magnetic component 260, and is used to detect the magnetic field change of the magnetic component 260.

[0081] In the above embodiment, when the winding wheel 110 rotates, the end cap 240 connected to the winding wheel 110 rotates synchronously, causing the rotating shaft 220 connected to the end cap 240 to rotate accordingly. The magnetic component 260 disposed on the rotating shaft 220 rotates synchronously with the rotating shaft 220, causing a change in the magnetic field. The sensing element on the circuit board 270 detects the change in the magnetic field caused by the rotation of the magnetic component 260 and converts it into an electrical signal, thereby completing the measurement.

[0082] Measurement is achieved through the cooperation of the magnetic component 260 and the sensing element on the circuit board 270, without any physical contact between them, thus realizing non-contact measurement and helping to improve the service life of the wire encoder.

[0083] Understandably, circuit board 270 is electrically connected to external devices via cable 290.

[0084] In some embodiments, the pull-wire sensor 200 further includes a gear transmission assembly 280. The gear transmission assembly 280 is disposed within the electronic housing 213 and is connected to the rotating shaft 220 in a transmission manner; wherein, a magnetic element 260 is disposed in the gear transmission assembly 280.

[0085] In the above embodiment, the rotation of the rotating shaft 220 is accelerated or decelerated by the gear transmission assembly 280; the magnetic component 260 generates a change in magnetic field as the gear transmission assembly 280 rotates; the sensing element on the circuit board 270 detects the change in magnetic field and converts it into an electrical signal, ultimately achieving accurate measurement of the length of the wire harness 230. By reasonably selecting the gear ratio, the rotational speed of the rotating shaft 220 can be adjusted according to actual needs, thereby increasing the detection frequency of the sensing element on the circuit board 270 and improving the measurement accuracy and response speed.

[0086] In some embodiments, the gear transmission assembly 280 includes a main gear 281 and planetary gears 282. The main gear 281 is fixedly connected to the rotating shaft 220; a plurality of planetary gears 282 are arranged at circumferential intervals along the main gear 281; one planetary gear 282 meshes with the main gear 281, and the plurality of planetary gears 282 are sequentially connected via transmission wheels; and magnetic elements 260 are provided on both the main gear 281 and the plurality of planetary gears 282.

[0087] Specifically, the main gear 281 and the rotating shaft 220 are fixedly connected, meaning that the rotation of the rotating shaft 220 is directly transmitted to the main gear 281, causing the main gear 281 to rotate synchronously. Multiple planetary gears 282 are arranged at circumferential intervals around the main gear 281. This arrangement allows the planetary gears 282 to be evenly distributed around the main gear 281, forming a relatively stable transmission structure. When the main gear 281 drives the meshing planetary gear 282 to rotate, this planetary gear 282 transmits power to the other planetary gears 282 through the transmission wheel, ensuring that all planetary gears 282 rotate synchronously.

[0088] In the above embodiment, magnetic elements 260 are provided on both the main gear 281 and the multiple planetary gears 282. Compared to providing magnetic elements 260 on only a single component, this greatly increases the frequency and complexity of magnetic field changes. When the main gear 281 and planetary gears 282 rotate, the multiple magnetic elements 260 simultaneously generate magnetic field changes. The sensing element on the circuit board 270 can detect richer magnetic field information, thereby improving the detection sensitivity.

[0089] For example, planetary gear 282 includes a first-stage gear 2821, a second-stage gear 2822, a third-stage gear 2823, and a fourth-stage gear 2824. Driven gear 283 includes a first-stage driven gear 2831, a second-stage driven gear 2832, and a third-stage driven gear 2833; wherein, the first-stage driven gear 2831 is disposed between the first-stage gear 2821 and the second-stage gear 2822, the second-stage driven gear 2832 is disposed between the second-stage gear 2822 and the third-stage gear 2823, and the third-stage driven gear 2833 is disposed between the third-stage gear 2823 and the fourth-stage gear 2824.

[0090] Thus, when the rotating shaft 220 rotates with the winding wheel 110, it drives the main gear 281 to rotate. The first-stage gear 2821 rotates with the main gear 281, simultaneously driving the first-stage driven gear 2831 to rotate. The rotation of the first-stage driven gear 2831 drives the second-stage gear 2822 to rotate, and so on, until the fourth-stage gear 2824 rotates. When the gears rotate, the corresponding magnetic components 260 generate a change in magnetic field. On the circuit board 270, a corresponding sensing element is set for each magnetic component 260 to sense the changing magnetic field. Finally, after decoding and calculation, the corresponding electrical signal is output.

[0091] As can be seen from the above description, the pull-wire sensor 200 provided in this application embodiment has the following beneficial effects:

[0092] 1. By isolating lateral forces through the guide assembly 120, signal noise caused by friction between the wire rope and the outlet hole and bearing vibration is eliminated, resulting in a smoother and more accurate output signal; this can improve measurement accuracy and stability.

[0093] 2. The core measuring elements and bearings of the pull-wire sensor 200 are housed internally, protecting them from abnormal wear and significantly extending the mean time between failures (MTBF).

[0094] 3. The alignment requirements between the wire sensor 200 and the object being measured are significantly reduced. Even with a certain degree of angular deviation or movement trajectory wobbling, the sensor can still operate stably, reducing installation and debugging time and accuracy requirements, thereby lowering installation complexity and cost.

[0095] 4. In complex application scenarios involving vibration, swaying, or non-linear motion (such as engineering robotic arms, port cranes, and irregularly moving stages), the sensor of this application performs better and can adapt to harsher working conditions.

[0096] 5. The guide component 120 can be used as a modular component. It has a compact structure, is easy to integrate, and can be easily installed on existing standard external pull wire sensors. Upgrading and modification are simple and it has strong versatility.

[0097] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0098] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A winding device, characterized in that, include: A winding reel can rotate around its own axis and is used to wind or unwind wire bundles. A guide assembly is disposed on one side of the outer circumference of the winding reel; the guide assembly is provided with a lead wire channel for the wire harness to pass through; When the winding wheel winds or unwinds the wire harness, the wire harness has a transition holding section that extends from the lead channel to the winding wheel, and the direction of extension of the transition holding section is tangent to the outer circumference of the winding wheel.

2. The winding device according to claim 1, characterized in that, The guiding component includes: Fixed bracket; At least one first guide member is connected to the fixed bracket and is located on one side of the outer circumference of the winding reel; At least one second guide member is located below the first guide member; in the radial direction of the winding reel, at least one second guide member and at least one first guide member are arranged side by side; The gap between the first guide and the second guide forms the lead channel.

3. The winding device according to claim 2, characterized in that, The first guide member includes a first body and at least two first limiting rings, the at least two first limiting rings being respectively disposed at both ends of the first body along the axial direction of the winding reel; and / or The second guide includes a second body and at least two second limiting rings, the at least two second limiting rings being disposed at both ends of the second body along the axial direction of the winding wheel.

4. The winding device according to claim 2, characterized in that, The fixed bracket includes: a first mounting base and a second mounting base; the first mounting base and the second mounting base are arranged at a distance from each other along the axial direction of the winding wheel; The first guide and the second guide are connected between the first mounting base and the second mounting base.

5. The winding device according to claim 2, characterized in that, The guiding assembly includes two first guide members and one second guide member, with the two first guide members arranged side by side along the extension direction of the transition retaining section; The second guide is positioned below one of the two first guides, away from the winding reel.

6. The winding device according to any one of claims 1 to 5, characterized in that, The winding device further includes a stop member connected to the lead-out end of the wire harness; wherein, when the winding wheel winds up the wire harness, the stop member is adapted to be blocked by the guide assembly.

7. A pull-wire sensor, characterized in that, include: Fixed base; A rotating shaft is disposed on the fixed base and is capable of rotating about the axis of the rotating shaft; The winding device as described in any one of claims 1 to 6; The wire harness is wound around the winding reel; The winding wheel and the fixed base are rotatably connected, the rotating shaft and the winding wheel are drive-connected, and the guide assembly is disposed on the fixed base.

8. The draw wire sensor according to claim 7, characterized in that, The fixing base includes a base and an extension; the extension is located at the center of the base; the winding wheel has a first opening groove and a second opening groove at both ends along the axial direction; the extension extends through the first opening groove to the second opening groove; The pull-wire sensor further includes a coil spring and an end cap; the end cap is disposed at the opening of the second opening groove; the coil spring is disposed in the second opening groove and has an inner end and an outer end, the inner end abutting against the extension portion, and the outer end connecting to the winding wheel; The rotating shaft is connected to the end cap.

9. The draw wire sensor according to claim 8, characterized in that, An electronic housing is provided on the side of the substrate opposite to the extension; wherein, the pull-wire sensor further includes: A magnetic component is disposed within the electronic housing and connected to the rotating shaft; A circuit board is disposed inside the electronic housing and positioned opposite the magnetic component, for detecting changes in the magnetic field of the magnetic component.

10. The draw wire sensor according to claim 9, characterized in that, The pull-wire sensor further includes a gear transmission assembly; the gear transmission assembly is disposed within the electronic housing and is connected to the rotating shaft for transmission; wherein the magnetic element is disposed within the gear transmission assembly.

11. The draw wire sensor according to claim 10, characterized in that, The gear transmission assembly includes: The main gear is fixedly connected to the rotating shaft; Multiple planetary gears are arranged at intervals along the circumference of the main gear; one of the planetary gears meshes with the main gear, and the multiple planetary gears are sequentially connected by a transmission wheel; The magnetic element is provided on the main gear and the multiple planetary gears.

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