Wire cup capable of being electrically controlled to brake and fishing reel

Abstract

The utility model provides a wire cup capable of being electrically controlled to brake and a fishing reel. The wire cup comprises a cylindrical cup body, a stator part, a rotor part, an electric control unit, a single-phase rectifier bridge circuit and a switching device. The stator part and the rotor part are arranged in the cup body, the stator part comprises a first induction coil and a second induction coil, the first end of the first induction coil is connected with the first end of the second induction coil, and the rotor part can coaxially rotate relative to the stator part and comprises a plurality of magnets which are arranged on the inner wall of the cup body at intervals in the circumferential direction; the polarities of the adjacent magnets are opposite; two alternating-current ends of the single-phase rectifier bridge circuit are respectively connected with the second end of the first induction coil and the second end of the second induction coil, and two direct-current ends of the single-phase rectifier bridge circuit are connected with a power supply end of the electric control unit; the enable end of the switching device is connected with the brake signal output end of the electric control unit, and the brake current path is conducted when a brake signal sent by the electric control unit is received.

Description

Technical Field

[0001] This application belongs to the field of electronic and electrical technology, and relates to electrically controlled spool technology, specifically providing an electrically controlled braked spool and fishing reel. Background Technology

[0002] The spool used for winding the line is an important component of fishing reels and other devices that require winding the line. During the use of fishing reels, it is necessary to brake at the end of the line release to prevent the line from breaking due to the spool rotating faster than the line release speed. Traditionally, fishing reels with electronic brake functions are used.

[0003] Currently, spools with electronic braking function have been widely used in the fishing reel industry. These electronically controlled spools can control the switching components to achieve a short circuit in the induction coil circuit when the spool rotates, generating a large induced current using the principle of electromagnetic induction, and then using the reverse induced magnetic field to brake the spool. For example, patent CN110622927A provides an automatic braking system for a rocker reel, which uses this electronic braking method.

[0004] The aforementioned existing technology for implementing electronic braking requires a control system to control the on / off state of switching components. To ensure effective braking under all circumstances, a reliable power supply is needed for the control system. However, due to the need for miniaturization and integration of fishing reels, it is generally difficult to provide sufficient space for a power supply module. If a fishing rod with an electronically controlled reel is not charged or has its battery replaced for an extended period, the electronic braking function will fail due to depletion of power. Utility Model Content

[0005] This application provides an electrically controllable brake spool through an embodiment. The spool can generate a power supply current as soon as it rotates, thereby ensuring that the control unit can reliably brake the spool under any circumstances.

[0006] The electrically controllable brake spool includes a cylindrical spool body, a stator, a rotor, an electronic control unit, a single-phase rectifier bridge circuit, and switching devices.

[0007] The stator and rotor are disposed inside the cup body. The stator includes a first induction coil and a second induction coil, and the first end of the first induction coil is connected to the first end of the second induction coil. The rotor can rotate coaxially relative to the stator and includes a plurality of magnets arranged circumferentially on the inner wall of the cup body, and the polarities of adjacent magnets are opposite.

[0008] The two AC terminals of the single-phase rectifier bridge circuit are respectively connected to the second terminals of the first induction coil and the second induction coil, and the two DC terminals are connected to the power supply terminals of the electronic control unit.

[0009] The enable terminal of the switching device is connected to the brake signal output terminal of the electronic control unit, and the brake current path is turned on when the brake signal sent by the electronic control unit is received.

[0010] Preferably, the first and second terminals of the switching device are respectively connected to the cathode and anode of a diode in the single-phase rectifier bridge circuit, and the braking current path connects the second terminal of the first induction coil and the second terminal of the second induction coil, without passing through the current path of the electronic control unit.

[0011] Furthermore, the upper limit of the duration for which the first and second terminals of the switching device can generate braking current in the conducting state is 1 / 2 of the rotation period of the spool.

[0012] Preferably, the braking signal is a continuous level signal or an alternating level signal.

[0013] Preferably, the switching device is a MOSFET, an IGBT power device, or a transistor.

[0014] Preferably, the electronic control unit includes an MCU module for acquiring the rotational speed of the rotor relative to the stator and generating the braking signal based on the rotational speed.

[0015] Preferably, the electronic control unit further includes an energy storage module for supplying power to the electronic control unit when there is a braking current between the first and second terminals of the switching device.

[0016] Preferably, the energy storage module is an energy storage capacitor, and the diameter of the energy storage capacitor is no greater than 7mm and the height is no greater than 2mm.

[0017] Preferably, the stator section further includes a third induction coil; the first and second ends of the switching device are respectively connected to the two ends of the third induction coil, and the braking current path is a current path that connects the first and second ends of the third induction coil and does not pass through the current path of the electronic control unit.

[0018] Preferably, the upper limit of the duration for which the first and second terminals of the switching device can generate braking current in the conducting state is equal to the rotation period of the spool.

[0019] This application also provides a fishing reel through embodiments, including a housing, a handle, and the aforementioned electrically controllable braked spool.

[0020] The electrically controllable braking spool provided in this application adds a single-phase rectifier bridge circuit to existing electrically controllable braking spools. This circuit converts the alternating current generated by the spool's rotation into direct current to power the electronic control unit. The electronic control unit then controls the switching devices, generating a short-circuit current in the single-phase rectifier bridge circuit when braking is required. This self-powered braking control of the spool, achieved through the cooperation of the single-phase rectifier bridge circuit and the switching devices, eliminates the need for a separate large-capacity battery. This ensures reliable braking control of the spool even after prolonged periods of inactivity, as soon as it begins to rotate. Furthermore, the entire circuit has fewer components and a simpler structure, effectively meeting the requirements for miniaturization and integration of fishing reels. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an electrically controllable braking spool provided according to an embodiment of this application;

[0022] Figure 2 This is a schematic diagram showing the positional structure of the stator and rotor sections according to embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the circuit principle of an electrically controllable braking spool according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the power supply process for an electrically controllable brake spool provided according to an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the braking process of an electrically controllable braking spool provided according to an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the circuit principle of an electrically controllable braking spool according to an embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the circuit principle of an electrically controllable braking spool according to an embodiment of this application. Detailed Implementation

[0028] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0029] Furthermore, for ease of understanding, various components on the drawings have been enlarged or reduced, but this is not intended to limit the scope of protection of this application.

[0030] Singular forms of words also include plural meanings, and vice versa.

[0031] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are 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, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.

[0032] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of these terms in this application.

[0033] This application provides an electrically controllable brake spool through an embodiment. The spool can generate a power supply current as soon as it rotates, thereby ensuring that the control unit can reliably brake the spool under any circumstances.

[0034] Figure 1 This is a schematic diagram of the structure of an electrically controllable brake spool according to an embodiment of this application, wherein the portion inside the spool is shown in dashed lines. Figure 2 and Figure 3 These are schematic diagrams of the structure of the electrically controllable brake spool, the arrangement of the stator and rotor, and the circuit principle, provided according to some embodiments.

[0035] like Figures 1 to 3 As shown, the electrically controllable brake spool includes a spool body 41, a stator 42, a rotor 43, an electronic control unit, a single-phase rectifier bridge circuit, and a switching device 1.

[0036] The cup body 41 is cylindrical, with its outer wall used for winding fishing line and its interior hollow to house the stator section 42 and the rotor section 43. The stator section 42 includes a first induction coil and a second induction coil wound on a winding post or coil frame (optionally, there can be one or more first and second induction coils, which are alternately arranged circumferentially when there are multiple first and second induction coils). The first end of the first induction coil is connected to the first end of the second induction coil, and the second ends of both are used to output alternating current. The rotor section 43 is coaxially rotatable relative to the stator section and includes a plurality of magnets fixedly connected to the inner wall of the cup body 41 at circumferential intervals, with the polarities of adjacent magnets arranged in an N-S-N-S polarity configuration. In some embodiments, to improve the electromagnetic induction effect of the coils and magnets, the following can be used... Figure 1 As shown, a cylindrical structure 411 for fixing magnets extends inward from the inner wall of the cup body 41.

[0037] In some specific embodiments, the electronic control unit, single-phase rectifier circuit and switching device can be arranged on the circuit board 44. The circuit board 44 can be fixedly arranged in the base 46, and a protrusion 461 extends from the base 46 toward the cup body 41 to fix the stator part 42, so that the stator part 42 can enter the rotor part after the spool is assembled.

[0038] In some embodiments, the electrically controllable braked spool generally also includes a spool shaft 45, which can be fixedly connected to the spool body 41 and rotatably connected to the base 46 through a bearing. The spool shaft 45 and the handle of the fishing reel can be connected by a transmission gear set, thereby enabling manual reeling and other operations.

[0039] Figure 1 The structure and installation method of the cup body 41, stator 42, rotor 43 and electronic control unit shown are all optional embodiments. Those skilled in the art can flexibly adjust the above structure according to specific application requirements and size specifications.

[0040] The electronic control part of the embodiments of this application will be described in detail below.

[0041] like Figure 3 As shown, the single-phase rectifier bridge circuit consists of four diodes: D1, D2, D3, and D4. The anode of D1 is connected to the cathode of D2, and the anode of D3 is connected to the cathode of D4, forming two AC terminals. These two AC terminals are respectively connected to the second terminal of the first induction coil (i.e.,...). Figure 2 (point a) and the second end of the second induction coil (i.e. Figure 2Connect point b); connect the cathodes of D1 and D3, and connect the anodes of D2 and D4 to form two DC terminals, which are respectively connected to the power supply terminals (generally including the power supply terminal and the ground terminal) of the electronic control unit.

[0042] When casting the fishing line, the line causes the spool to rotate. The magnet in the rotor rotates relative to the stator, causing the first and second induction coils to cut the magnetic field, thereby generating an alternating electromotive force at the two AC terminals. Using a single-phase rectifier bridge circuit composed of four diodes, the AC electromotive force between the two AC terminals can be rectified into DC electromotive forces at the two DC terminals. When the two DC terminals are connected to the power supply terminal and ground terminal of the electronic control unit, respectively, the rotation of the spool can be used to supply power to the electronic control unit.

[0043] The switching device 1 is used to brake the spool under the control of the electronic control unit. Its enable terminal is connected to the brake signal output terminal S-out of the electronic control unit, and it conducts the brake current path when it receives the brake signal sent by the electronic control unit.

[0044] Specifically, in Figure 2 In the embodiment shown, the switching device 1 is disposed in a single-phase rectifier bridge circuit and is disposed corresponding to one of the diodes (the fourth diode D4 in the figure). Its first end and second end are respectively connected to the cathode and anode of the fourth diode D4. When its enable end receives the braking signal sent by the electronic control unit, its first end and second end are turned on, thereby forming a connection between the second end (end a) of the first induction coil and the second end (end b) of the second induction coil, and the braking current path does not pass through the electronic control unit.

[0045] In some specific embodiments, the switching device 1 can be a MOSFET, for example, in Figure 3 In the embodiment shown, the switching device is an NMOS transistor, whose first and second terminals are connected to the cathode and anode of the fourth diode D4, respectively. Its enable terminal (G terminal) is connected to the brake signal output terminal S-out of the electronic control unit. When a high-level signal (i.e., a brake signal) is received from the electronic control unit, its first and second terminals are turned on, thereby forming a current path between the two DC terminals of the single-phase rectifier bridge. When the signal received by its enable terminal is a low-level signal, its first and second terminals are in an open circuit state.

[0046] It should be known that Figure 3The type and location of the switching device 1 used in the illustrated embodiment are only one optional implementation of this application. In other optional embodiments, the switching device 1 can also be a PMOS transistor, an IGBT power device, or a transistor, or other electronic devices that can switch between on and off states according to the level. In addition to corresponding to the fourth diode D4, its location can also correspond to the first diode D1, the second diode D2, or the third diode D3.

[0047] In some alternative embodiments, the braking signal can be a continuous level signal, for example in Figure 3 In this embodiment, when the switching device receives a continuous high-level signal, it turns on its first and second terminals; in other embodiments, the braking signal can also be an alternating level signal, for example in... Figure 3 In the process, when the switching device 1 receives an alternating level signal with changing frequency or a PWM signal, it will turn on its first and second terminals during the high-level period of the alternating level signal.

[0048] The following combination Figure 4 , Figure 5 The working process of the single-phase rectifier bridge circuit, switching device 1, and electronic control unit is explained.

[0049] like Figure 4 As shown, when the induced electromotive force corresponding to terminal a is in the positive half-cycle, the induced electromotive force corresponding to terminal b is in the negative half-cycle. The induced current flows from the first diode D1 through the electronic control unit, and then through the fourth diode D4 back to terminal b. During this period, the single-phase rectifier bridge circuit can supply power to the electronic control unit. Since the current will pass through the electronic control unit regardless of whether the first and second terminals of the switching device 1 are turned on (i.e., regardless of whether the braking current path is turned on) during this half-cycle, it can be ensured that as long as the spool rotates, the single-phase rectifier bridge circuit can provide a stable power supply to the electronic control unit during this period. This ensures that the electronic control unit can be started and put into working state when the spool rotates for the first time after a long period of non-use.

[0050] like Figure 5As shown, when the induced electromotive force corresponding to terminal a is in the negative half-cycle, the induced electromotive force corresponding to terminal b is in the positive half-cycle. During this half-cycle, if the electronic control unit outputs a high-level braking signal to the enable terminal of switching device 1, the first and second terminals of switching device 1 are turned on (i.e., the braking current path is turned on). Since the potential of terminal b is higher than that of terminal a during this half-cycle, the induced current generated by the coil will flow directly from the first terminal (i.e., terminal b) of switching device 1 to the second terminal, and then flow back to terminal a through the second diode D2. At this time, terminal b and terminal a will be in a short-circuit state, thereby generating a large short-circuit current and a reverse electromagnetic force in the coil, which will have a braking effect on the spool. Conversely, if the switching device receives a continuous low-level signal, its first and second terminals will be in an open-circuit state, and the current will still flow from the third diode D3 through the electronic control unit, and then flow back to terminal a through the second diode D2. That is, in this state, the single-phase rectifier bridge can still supply power to the electronic control unit. Furthermore, as analyzed above, when the switching device receives alternating level signals during this half-cycle, the braking force can be controlled by adjusting the duty cycle.

[0051] pass Figure 4 , Figure 5 As can be seen, the electrically controllable brake spool provided in this application adds a single-phase rectifier bridge circuit to the existing electrically controllable brake spool and sets up a switching device. The single-phase rectifier bridge circuit is used to convert the alternating current generated by the rotation of the spool into a direct current to power the electronic control unit. Then, the electronic control unit controls the switching device to generate a braking current by conducting the braking current path when braking is required.

[0052] By utilizing a single-phase rectifier bridge circuit and switching devices, self-powered braking control of the fishing reel is achieved. This eliminates the need for a separate large-capacity battery, ensuring reliable braking control of the reel as soon as it starts rotating, even after prolonged periods of inactivity. Furthermore, the circuit has a small number of components and a simple structure, effectively meeting the requirements for miniaturization and integration of fishing reels.

[0053] At the same time, it needs to be emphasized that through the study of Figure 4 , Figure 5Analysis of the working process shows that when the induced electromotive force at terminal a is in the positive half-cycle, even if the switching device receives a braking signal and conducts the braking current path, there is no braking current in the path (i.e., the conduction of the braking current path does not necessarily mean that braking current will appear in it), so braking is impossible. It can only generate braking current by conducting the first and second terminals when the induced electromotive force at terminal a is in the negative half-cycle. Therefore, when the switching device is set in a single-phase rectifier bridge circuit and is correspondingly set with one of the diodes, the upper limit of the duration for which the first and second terminals of the switching device can generate braking current in the conducting state is 1 / 2 of the rotation period of the spool. By limiting the effective period of the braking action, it can be ensured that the rotation of the spool can supply power to the electronic control unit for at least half of the cycle under any circumstances.

[0054] In some preferred embodiments, the electronic control unit includes an MCU module, which is used to acquire the rotational speed of the rotor relative to the stator and generate a braking signal for braking control of the rotor based on the rotational speed. Techniques for determining the rotor's speed, acceleration, and other information by detecting or sampling the rotational speed are known to those skilled in the art and will not be elaborated upon here.

[0055] In some preferred embodiments, the electronic control unit may further include an energy storage module. The energy storage module is preferably constructed using components such as energy storage capacitors. It should be noted that the purpose of setting up an energy storage module is different from setting up a rechargeable lithium battery module or dry cell battery for the electronic control unit in the prior art. Its purpose is not to continuously supply power to functional modules such as the MCU that require power when not in use for a long time, but to temporarily store the electrical energy generated by the current rotation after the rotor rotates and the single-phase rectifier bridge circuit generates electricity, so that the electronic control unit will not lose power due to the lack of power supply current during the braking control process.

[0056] Obviously, due to Figure 3 In the illustrated embodiment, the single-phase rectifier bridge circuit provides power supply current for at least half of the rotation cycle. Therefore, the energy storage module only needs to ensure power supply to the electronic control unit for the remaining half of the rotor rotation cycle. Thus, the capacity and size of the energy storage module can be set very small to meet the requirements of product miniaturization and integration. For example, in some preferred embodiments, the energy storage module can be a supercapacitor with a capacity not exceeding 1F and a maximum size not exceeding 5cm. Furthermore, when using a low-power MCU with a supply voltage of 3.3V, the supercapacitor's capacity can not exceed 0.22F, its diameter can not exceed 7mm, and its height can not exceed 2mm.

[0057] In some preferred embodiments, an independent third induction coil may be added to the stator section. The third induction coil may not participate in the power supply of the electronic control unit, but may only be used for braking the spool.

[0058] Figure 6 The circuit diagram after adding a third induction coil to the stator section is shown, as follows: Figure 6 As shown, the enable terminal of the switching device 1 is still connected to the brake signal output terminal S-out of the electronic control unit, and its first and second terminals are respectively connected to the two ends of the third induction coil (terminal c and terminal d in the figure).

[0059] Obviously, in this connection method, when the switching device receives the braking signal sent by the electronic control unit at its enable terminal, it will conduct its first and second terminals, thereby forming a braking current path connecting the first and second terminals of the third induction coil without passing through the electronic control unit. Since the third induction coil is not connected to the rectifier bridge circuit and there is no diode to block the current flow, the third induction coil can generate braking current as long as it is short-circuited during the rotation of the coil cup. That is, when the switching device 1 uses... Figure 6 In the setup shown, the upper limit of the duration for which the braking current can be generated when the first and second terminals are in the conducting state is equal to the rotation period of the spool. This method isolates the power supply to the electronic control unit from the braking control of the spool, ensuring that the two operations do not interfere with each other.

[0060] It should be noted that, Figure 6 The illustrated embodiments can also be used with Figure 3 The illustrated embodiment is compatible, meaning that there can also be two switching devices 1, for example, like Figure 7 As shown, the first and second ends of one of the switching devices 1 are connected to the two ends of the third induction coil, while the other switching device 1 is set in the single-phase rectifier bridge circuit. This setting method can further increase the braking force on the spool.

[0061] Some embodiments of this application also provide a fishing reel, which includes a housing, a handle, and a spool with an electrically controllable brake as described above. The specific combination of the housing, handle, and spool can be referred to various existing fishing reels with electrically controllable brake functions, and will not be repeated here.

[0062] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An electrically controllable brake cup, comprising a cylindrical cup body, a stator part, a rotor part and an electric control unit, characterized in that, further comprising a single-phase rectifier bridge circuit and a switching device; the stator part and the rotor part are arranged inside the cup body, wherein the stator part comprises a first induction coil and a second induction coil, and the first end of the first induction coil is connected to the first end of the second induction coil, the rotor part is coaxially rotatable relative to the stator part, and comprises a plurality of magnets arranged in a circumferential direction on the inner wall of the cup body, and the polarity of adjacent magnets is opposite; two alternating current terminals of the single-phase rectifier bridge circuit are connected to the second end of the first induction coil and the second end of the second induction coil respectively, and two direct current terminals are connected to the power supply terminals of the electric control unit; the enable terminal of the switching device is connected to the brake signal output terminal of the electric control unit, and the brake current path is turned on when the brake signal sent by the electric control unit is received.

2. The electrically controllable brake cup according to claim 1, characterized in that, the first end and the second end of the switching device are respectively connected to the cathode and the anode of a diode in the single-phase rectifier bridge circuit, and the brake current path is a current path that connects the second end of the first induction coil and the second end of the second induction coil without passing through the electric control unit.

3. The electrically controllable brake cup according to claim 2, characterized in that, the upper limit of the duration of brake current generated by the first end and the second end of the switching device in the on state is 1 / 2 of the rotation period of the cup.

4. The electrically controllable brake cup according to claim 1, characterized in that, the brake signal is a continuous level signal or an alternating level signal.

5. The electrically controllable brake cup according to claim 1, characterized in that, the switching device is a MOS tube, an IGBT power device or a triode.

6. The electrically controllable brake cup according to claim 1, characterized in that, the electric control unit comprises an MCU module for obtaining the rotational speed of the rotor part relative to the stator part and generating the brake signal based on the rotational speed.

7. The electrically controllable brake cup according to claim 1, characterized in that, the electric control unit further comprises a power storage module for supplying power to the electric control unit when brake current exists between the first end and the second end of the switching device.

8. The electrically controllable brake cup according to claim 7, characterized in that, the diameter of the power storage module is not greater than 7 mm, and the height is not greater than 2 mm.

9. The electrically controllable brake cup according to claim 1, characterized in that, the stator part further comprises a third induction coil; the first end and the second end of the switching device are connected to the two ends of the third induction coil, and the brake current path is a current path that connects the first end and the second end of the third induction coil without passing through the electric control unit.

10. The electrically controllable brake cup according to claim 9, characterized in that, the upper limit of the duration of brake current generated by the first end and the second end of the switching device in the on state is equal to the rotation period of the cup.

11. A fishing reel characterized by including: The housing, handle, and wire cup of the electrically controllable brake as claimed in claim 1.

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