Mechanical structure for adjusting the braking force of a water drop wheel electromagnetic brake

Abstract

The utility model discloses a kind of for water droplet wheel electromagnetic brake brake force size's adjustment mechanical structure, belong to fishing tackle technical field, this structure aims at solving the problem of poor sealing, complex structure in prior art electronic brake module due to mechanical penetration type adjustment is led to.The technical scheme of the utility model includes: electromagnetic brake module shell, rotatably assembled on the adjusting part and the adjusting magnet of adjusting part;PCB control panel containing hall potentiometer is sealingly arranged in the electromagnetic brake module shell;The hall potentiometer is used to non-contact inductive position change of adjusting magnet, to adjust the size of electromagnetic brake force.The utility model is by the non-contact type adjusting mode of magnetic induction, realizes the complete sealing of internal electronic module, with the advantages of simple structure, excellent waterproof anticorrosion performance, high reliability and low cost.

Description

Technical Field

[0001] This utility model relates to the field of fishing gear technology, and in particular to an adjustment structure for an electromagnetic braking system for fishing reels, specifically a mechanical structure for adjusting the braking force of an electromagnetic brake on a baitcasting reel. Background Technology

[0002] A baitcasting reel (also known as a baitcasting lure reel) is a widely used type of fishing reel in lure fishing. One of its core functions is to achieve precise control over the line speed during casting, preventing line tangling and enabling long-distance, high-precision casting. To achieve this, modern high-end baitcasting reels generally employ electronic braking systems.

[0003] A typical electronic braking system in the prior art usually includes a module housing a PCB control board, which works in conjunction with an electromagnet linked to a spool. To adjust the braking force, the system features an adjustment knob. By rotating the knob, the user changes the resistance of a potentiometer on the PCB control board via a series of mechanical transmission components, thereby adjusting the magnitude of the magnetic resistance generated by the electromagnetic braking system.

[0004] However, the above-mentioned adjustment scheme based on resistive potentiometers has inherent technical defects:

[0005] 1) Since the adjustment knob needs to penetrate the module housing through a mechanical structure (such as a shaft) to transmit the action to the internal potentiometer, an opening is inevitably formed in the module housing. This open structure makes the entire electronic module extremely susceptible to corrosion from water, moisture, salt spray, etc., resulting in poor waterproof and corrosion resistance, poor reliability in complex fishing environments, and a shortened service life.

[0006] 2) To compensate for the aforementioned poor sealing performance, manufacturers often use potting encapsulation (applied encapsulation) to protect the internal PCB control board. However, this encapsulation method not only significantly increases the weight and production cost of the module, but also makes it impossible to repair once a failure occurs. In addition, the potting process may also affect the precision and consistency of internal components.

[0007] 3) The mechanical transmission chain between the external knob and the internal potentiometer is relatively long and contains multiple parts. This not only increases the difficulty of assembly and the requirements for the precision of the parts, but also increases the probability of mechanical failure.

[0008] Therefore, how to provide an electromagnetic brake adjustment structure that is simple in structure, has good sealing performance, low cost, and reliable adjustment is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mechanical structure for adjusting the braking force of an electromagnetic brake for a water droplet wheel. This structure aims to solve the problems of open structure, poor sealing, complex structure and high cost caused by traditional resistive potentiometer adjustment schemes.

[0010] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0011] A mechanical structure for adjusting the braking force of an electromagnetic brake on a baitcasting wheel, comprising:

[0012] The electromagnetic brake module housing contains a sealed PCB control board with a Hall effect potentiometer.

[0013] The electromagnetic brake module housing includes a spool cover, and a central shaft and an annular adjustment track surrounding the central shaft are integrally provided on the outer side of the spool cover.

[0014] An adjusting element is rotatably mounted on the central shaft;

[0015] An adjusting magnet is fixed to the adjusting member and located within the adjusting track;

[0016] The Hall potentiometer is mounted on the PCB control board and located directly below the adjustment track. It is used to sense the change in the magnetic field generated when the adjustment magnet rotates with the adjustment component, so as to adjust the magnitude of the electromagnetic braking force in a non-contact manner.

[0017] By employing the above technical solution, when the user rotates the external adjustment component, the adjustment magnet moves in a circular motion within the adjustment track. Since the Hall potentiometer inside the module is aligned with this track, it can sense in real time the changes in the strength and polarity of the magnetic field caused by the change in the position of the adjustment magnet, and convert this into a corresponding electrical signal output to the PCB control board. The PCB control board uses this signal to control the current applied to the electromagnet, thereby achieving stepless and precise adjustment of the magnetic resistance of the spool rotation. The entire adjustment process is carried out entirely through the magnetic field penetrating the module casing, without any physical contact or mechanical openings, fundamentally ensuring the airtightness of the internal electronic components.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) This utility model adopts the non-contact adjustment principle of magnetic induction, which completely eliminates the mechanical transmission parts that penetrate the module shell, so that the module containing the PCB control board can be completely sealed. This greatly improves the product's waterproof, dustproof and corrosion-resistant capabilities, and significantly enhances the product's reliability and service life in various harsh fishing environments.

[0020] (2) By replacing the traditional resistive potentiometer with a Hall effect potentiometer, the complex mechanical linkage between the knob and the potentiometer in the traditional structure is eliminated, making the overall structure simpler and reducing the number of parts. This not only reduces manufacturing costs and assembly difficulty and improves production efficiency, but also significantly reduces the mechanical failure rate due to the reduction of moving parts.

[0021] (3) Based on the Hall effect sensing principle, it is easy to achieve continuous and smooth stepless adjustment, allowing users to make more precise braking force settings. Compared with traditional gear-type adjustment or vague resistance adjustment, this utility model provides a superior operating experience.

[0022] (4) The separate design of the module and the cup cover allows the manufacturing precision of the functional components (electronic module) and the structural components (cup cover) to be controlled separately, which reduces the stringent requirements on the overall assembly tolerance and helps to improve product yield and quality stability.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, embodiments of this utility model are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a cross-sectional structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 This is an exploded structural diagram of an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the adjusting magnet in this utility model;

[0028] In the diagram: 1-Adjusting component, 2-Adjusting magnet, 3-Cup cap, 4-Module cap, 5-Module base, 6-Central shaft, 7-Adjusting track, 8-Notch. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] Please see Figures 1 to 3 This embodiment provides a mechanical structure for adjusting the braking force of an electromagnetic brake on a water droplet wheel. This structure fundamentally changes the traditional adjustment method that relies on mechanical transmission and resistive potentiometers, and instead adopts non-contact magnetic induction adjustment, thereby achieving complete sealing of the electronic module.

[0031] like Figure 1 and Figure 2 As shown, the adjustment structure of this utility model mainly includes an electromagnetic brake module housing and an adjustment mechanism installed on its exterior.

[0032] The electromagnetic brake module housing consists of a spool cover 3, a module cover 4, and a module base 5. The module base 5 and module cover 4 fit together and can be secured using any suitable corrosion-resistant sealing process, such as ultrasonic welding, gluing, or the use of sealing rings, to form an independent, completely sealed cavity. Within this sealed cavity, the core PCB control board (not shown in the figure) and induction coils (not shown in the figure), along with other electronic components, are pre-installed. This design ensures complete isolation of the internal precision circuitry from the external environment, thus eliminating the risk of corrosion from moisture, salt spray, etc. This sealed module, consisting of the module base 5 and module cover 4, is then installed as a whole inside the spool cover 3.

[0033] The adjustment mechanism is located on the outside of the spool cover 3, and mainly includes a user-operable adjustment element 1 and an adjustment magnet 2.

[0034] In this embodiment, a Hall potentiometer (also known as a Hall sensor) is crucially installed on the PCB control board within the sealed cavity. This Hall potentiometer replaces the resistive potentiometers in the prior art, which are susceptible to moisture and oxidation. Its installation position is precisely designed so that when the entire module is installed on the cup lid 3, the Hall potentiometer is positioned directly below the adjustment track 7, which will be described later, so that it can sensitively sense changes in the external magnetic field through the housing of the cup lid 3.

[0035] In this embodiment, the spool cap 3 serves as the base connecting the internal sealing module and the external adjustment mechanism. A recess is integrally formed in the central region of its outer surface. At the bottom of this recess, an annular adjustment track 7 is formed. At the center of the recess, a cylindrical central shaft 6 is integrally protruding upwards. This integrated design simplifies the number of parts and ensures the concentricity and positional accuracy between the central shaft 6 and the adjustment track 7.

[0036] In this embodiment, the adjusting member 1 is a component that the user directly operates to adjust the braking force, and its central hole is rotatably fitted onto the central shaft 6. The lower end of the adjusting member 1 extends into a cylindrical structure, the outer diameter of which matches the width of the adjusting track 7, allowing it to slide smoothly within the track. A notch 8 is provided on the outer wall of the cylindrical structure.

[0037] Adjust magnet 2 as follows Figure 3 As shown, its shape is designed as an arc-shaped structure, the curvature of which perfectly matches the curvature of the adjusting track 7. The adjusting magnet 2 is securely snapped or glued into the notch 8 of the adjusting member 1. This magnet has clearly defined magnetic poles, such as... Figure 3 As shown, its two ends are the N pole and the S pole, respectively. With this assembly method, when the user rotates the adjusting component 1, the adjusting magnet 2 will synchronously rotate within the adjusting track 7.

[0038] The working principle of this invention is based on the Hall effect, converting mechanical rotation into electrical signals in a non-contact manner. The specific adjustment process is as follows:

[0039] When users need to adjust the electromagnetic braking force, they can simply rotate the adjustment component 1 exposed on the outside of the fishing reel with their fingers.

[0040] Adjusting component 1 rotates around the central axis 6, causing the adjusting magnet 2 fixed thereon to move within the adjusting track 7.

[0041] Since the adjusting magnet 2 is a magnet with N and S poles, the magnetic field it generates is not uniform. According to the physical properties of magnetism, its magnetic field lines are most densely packed at the N and S poles (strongest magnetic field), while they are relatively sparse in the middle of the magnet (weaker magnetic field).

[0042] The Hall potentiometer located inside the module, directly below the adjustment track 7, will sense in real time the changes in the magnetic field strength and polarity caused by the different positions of the adjustment magnet 2 above it.

[0043] In a preferred embodiment, when the N pole of the adjusting magnet 2 is directly opposite the Hall potentiometer, the magnetic field is strongest, and the Hall potentiometer outputs a maximum voltage value (e.g., the corresponding digital value after A / D conversion is 4096); when the S pole is directly opposite the Hall potentiometer, the magnetic field direction is opposite and the strength is maximum, outputting a minimum voltage value (corresponding to a digital value of 0); when the middle of the magnet is directly opposite the Hall potentiometer, an intermediate value is output (corresponding to a digital value of 2048). As the adjusting magnet 2 moves continuously, the output signal of the Hall potentiometer also changes linearly or approximately linearly.

[0044] Once the microprocessor on the PCB control board receives this continuously changing signal from the Hall potentiometer, it precisely controls the current output to the electromagnetic brake coil according to a preset program. The greater the current, the stronger the magnetic resistance, and the greater the braking force on the spool; conversely, the smaller the current, the less the braking force.

[0045] Through the above methods, this utility model achieves stepless, smooth and precise adjustment of braking force. At the same time, since the entire adjustment process does not require any mechanical parts to penetrate the module shell, the sealing and reliability of the internal electronic system are perfectly guaranteed.

[0046] In summary, this invention cleverly solves the fundamental defects of existing technologies by replacing traditional resistive potentiometers with Hall effect potentiometers and designing a matching external magnetic adjustment mechanism. Its simple and compact structure eliminates complex linkage components, making assembly faster and significantly reducing costs. Simultaneously, it greatly improves the product's waterproof and corrosion-resistant performance and durability, providing users with a more reliable and precise operating experience.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mechanical structure for adjusting the braking force of an electromagnetic brake on a water dropper wheel, characterized in that, include: The electromagnetic brake module housing contains a sealed PCB control board with a Hall effect potentiometer. The electromagnetic brake module housing includes a spool cover, and a central shaft and an annular adjustment track surrounding the central shaft are integrally provided on the outer side of the spool cover. An adjusting element is rotatably mounted on the central shaft; An adjusting magnet is disposed on the adjusting member and located within the adjusting track; The Hall potentiometer is mounted on the PCB control board and located directly below the adjustment track. It is used to sense the change in the magnetic field generated when the adjustment magnet rotates with the adjustment component, so as to adjust the magnitude of the electromagnetic braking force in a non-contact manner.

2. The adjusting mechanical structure according to claim 1, characterized in that, The lower end of the adjusting component is a cylindrical structure, which is slidably fitted in the adjusting track. The cylindrical structure is provided with a notch for mounting the adjusting magnet.

3. The adjusting mechanical structure according to claim 1 or 2, characterized in that, The adjusting magnet is an arc-shaped structure that matches the curvature of the adjusting track.

4. The adjusting mechanical structure according to claim 3, characterized in that, The two ends of the adjusting magnet are the N pole and the S pole, respectively.

5. The adjusting mechanical structure according to claim 1, characterized in that, The electromagnetic brake module housing also includes a module base and a module cover, and the PCB control board is sealed within a cavity formed by the module base and the module cover.

6. The adjusting mechanical structure according to claim 1, characterized in that, A groove is provided at the center of the outer side of the spool cover, the adjustment track is formed at the bottom of the groove, and the central shaft is integrally formed by protruding upward from the center of the groove.

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