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

Abstract

The invention 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 technical field of electronic power, relates to the technology of an electronically controlled spool, and specifically provides a spool with electronically controlled braking and a fishing reel. Background Art

[0002] The spool for winding fishing line is an important part of devices such as fishing reels that require winding. During the use of a fishing reel, braking is needed at the end of the fishing line casting process to prevent line tangling due to the spool rotating faster than the casting speed. Traditionally, currently available fishing reels with electronically controlled braking functions are used.

[0003] Currently, spools with electronically controlled braking functions have been widely used in the field of fishing reels. Such electronically controlled spools can control switching components when the spool rotates to make the induction coil circuit enter a short - circuit state, generate a large induction current using the principle of electromagnetic induction, and then use the reverse induction magnetic field to brake the spool. For example, Patent CN110622927A provides a crank - wheel automatic braking system, which adopts this electronic braking method.

[0004] To achieve the electronically controlled braking function in the above - mentioned prior art, the control system needs to control the on - off state of the switching components. To ensure that an effective braking action can be generated in any case, reliable power supply for the control system is required. However, since fishing reels need to be miniaturized and integrated in terms of volume, it is generally difficult to provide sufficient accommodation space for the power supply module. If the fishing rod with an electronically controlled fishing reel has not been charged or had its battery replaced for a long time, the electronically controlled braking function will fail due to power depletion. Summary of the Invention

[0005] This application provides a spool with electronically controlled braking through an embodiment. This spool can generate a supply current after the spool starts to rotate, thus ensuring that the control unit can reliably brake the spool in any case.

[0006] The spool with electronically controlled braking includes a cylindrical spool body, a stator part, a rotor part, an electronic control unit, a single - phase rectifier bridge circuit, and a switching device;

[0007] The stator part and the rotor part are arranged inside the spool body. Among them, the stator part 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 part can rotate coaxially relative to the stator part and includes a plurality of magnets arranged at intervals along the circumferential direction on the inner wall of the spool body, and the polarities of adjacent magnets are opposite;

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

[0009] The enabling terminal of the switching device is connected to the brake signal output terminal of the electronic control unit, and conducts the brake current path when receiving the brake signal sent by the electronic control unit.

[0010] Preferably, 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 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 electronic control unit.

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

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

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

[0014] Preferably, the electronic control unit includes 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.

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

[0016] Preferably, the power storage module is a power storage capacitor, and the diameter of the power storage capacitor is not greater than 7 mm and the height is not greater than 2 mm.

[0017] Preferably, the stator part further includes a third induction coil; the first end and the second end of the switching device are respectively connected to both 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 electronic control unit.

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

[0019] This application also provides a fishing reel through an embodiment, which includes a housing, a handle, and the aforementioned electronically controllable brake spool.

[0020] The wire cup with electrically controllable braking provided by the embodiments of the present application adds a single-phase rectifier bridge circuit to the existing wire cup with an electrically controllable braking function. The single-phase rectifier bridge circuit is used to convert the alternating current generated by the rotation of the wire cup into direct current to supply power to the electronic control unit. Then, the electronic control unit controls the switching device to generate a short-circuit current in the single-phase rectifier bridge circuit when braking is required. The self-powered braking control of the wire cup is realized by the cooperation of the single-phase rectifier bridge circuit and the switching device, without the need to separately set a large-capacity battery. That is, it can ensure that when the wire cup is not used for a long time, reliable braking control can be carried out as long as it starts to rotate. In addition, the number of components in the whole circuit is small and the structure is simple, effectively meeting the requirements for miniaturization and integration of the fishing reel. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the wire cup with electrically controllable braking provided by the embodiments of the present application;

[0022] Figure 2 It is a schematic position structure diagram of the stator part and the rotor part provided by the embodiments of the present application;

[0023] Figure 3 It is a schematic circuit principle diagram of the wire cup with electrically controllable braking provided by the embodiments of the present application;

[0024] Figure 4 It is a schematic diagram of the power supply process of the wire cup with electrically controllable braking provided by the embodiments of the present application;

[0025] Figure 5 It is a schematic diagram of the braking process of the wire cup with electrically controllable braking provided by the embodiments of the present application;

[0026] Figure 6 It is a schematic circuit principle diagram of the wire cup with electrically controllable braking provided by the embodiments of the present application;

[0027] Figure 7 It is a schematic circuit principle diagram of the wire cup with electrically controllable braking provided by the embodiments of the present application. Detailed Embodiments

[0028] Hereinafter, the present application will be further described based on the preferred embodiments with reference to the drawings.

[0029] In addition, for the convenience of understanding, various components in the drawings are enlarged or reduced, but this approach is not intended to limit the protection scope of the present application.

[0030] Singular terms also include plural meanings, and vice versa.

[0031] In the description of the embodiments of the present application, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the embodiments of the present application are usually placed during use. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, in the description of the present application, in order to distinguish different units, terms such as first and second are used in this specification, but these are not restricted by the manufacturing order and should not be construed as indicating or implying relative importance. In the detailed description and claims of the present application, their names may be different.

[0032] The terms used in this specification are for the purpose of describing the embodiments of the present application, but are not intended to limit the present application. It should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "connected", "connected to" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be specifically understood.

[0033] The present application provides a spool capable of electrically controlled braking through an embodiment. The spool can generate a supply current after the spool rotates, so as to ensure that the control unit can reliably brake the spool under any circumstances.

[0034] Figure 1 FIG. 10 is a schematic structural diagram of the spool capable of electrically controlled braking according to an embodiment of the present application, in which the part inside the spool is shown in dotted lines. Figure 2 and Figure 3 FIGS. 11 to 13 are respectively a schematic structural diagram of the spool capable of electrically controlled braking, a schematic diagram of the setting of the stator part and the rotor part, and a schematic circuit principle diagram according to some embodiments.

[0035] As Figures 1 to 3 shown, the spool capable of electrically controlled braking includes a cup body 41, a stator part 42, a rotor part 43, an electric control unit, a single-phase rectifier bridge circuit, and a switching device 1.

[0036] Among them, the cup body 41 is cylindrical. Its outer wall is used for winding fishing line, and the inside is hollow to accommodate the stator part 42 and the rotor part 43. The stator part 42 includes a first induction coil and a second induction coil wound around a winding post or a coil skeleton (optionally, there can be one or more first induction coils and second induction coils. When there are multiple first induction coils and second induction coils, they are arranged alternately in the circumferential direction). The first end of the first induction coil is connected to the first end of the second induction coil, and the second end of the first induction coil and the second end of the second induction coil are used to output alternating current. The rotor part 43 can rotate coaxially relative to the stator part, and includes a plurality of magnets fixedly connected to the inner wall of the cup body 41 at circumferential intervals, and the polarities of adjacent magnets are arranged oppositely in the pattern of N pole - S pole - N pole - S pole. In some embodiments, to improve the electromagnetic induction effect between the coil and the magnet, as Figure 1 shown, a cylindrical structure 411 for fixing the magnet is formed by extending inward from the inner wall of the cup body 41.

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

[0038] In some embodiments, the line cup with electronically controllable braking generally further includes a line cup shaft 45. The line cup shaft 45 can be fixedly connected to the cup body 41 and is rotatably connected to the base 46 through a bearing. The line cup shaft 45 and the handle of the fishing reel can be connected by a transmission gear set, so as to realize operations such as manually reeling in the line cup.

[0039] Figure 1 The structures and installation methods of the electronic components such as the cup body 41, the stator part 42, the rotor part 43 and the electronic control unit shown are all optional implementation manners. Those skilled in the art can flexibly adjust the above - mentioned structures according to specific application requirements and size specifications.

[0040] The following will detail the electronic control part of the embodiments of the present application.

[0041] As Figure 3 shown, the single - phase rectifier bridge circuit is composed of four diodes, namely the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4. Among them, the anode of D1 is connected to the cathode of D2, and the anode of D3 is connected to the cathode of D4 to form two AC terminals. These two AC terminals are respectively connected to the second end of the first induction coil (i.e., Figure 2 point a in Figure 2Connect to point b in the middle); The cathodes of D1 and D3 are connected, and the anodes of D2 and D4 are connected 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 performing the action of casting the fishing line, the fishing line drives the spool to rotate, and the magnet of the rotor part rotates relative to the stator part, causing the first induction coil and the second induction coil to cut the magnetic field, thereby generating an alternating electromotive force at the two AC terminals. Using the single-phase rectifier bridge circuit composed of four diodes, the alternating electromotive force between the two AC terminals can be rectified into the DC electromotive force of the two DC terminals. When the two DC terminals are respectively connected to the power supply terminal and the ground terminal of the electronic control unit, 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 conducts the brake current path when receiving the brake signal sent by the electronic control unit.

[0044] Specifically, in Figure 2 In the illustrated embodiment, the switching device 1 is arranged in the single-phase rectifier bridge circuit and is correspondingly arranged with 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 terminal receives the brake signal sent by the electronic control unit, its first end and second end are conducted, thereby forming a current path connecting the second end (a end) of the first induction coil and the second end (b end) of the second induction coil, and bypassing the brake current path of the electronic control unit.

[0045] In some specific embodiments, the switching device 1 can use a MOS transistor. For example, in Figure 3 In the illustrated embodiment, the switching device is an NMOS transistor. Its first end and second end are respectively connected to the cathode and anode of the fourth diode D4, and its enable terminal (G pole) is connected to the brake signal output terminal S-out of the electronic control unit. When receiving the high-level signal (i.e., the brake signal) output by the electronic control unit, its first end and second end are conducted, 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 end and second end are in an open state.

[0046] It should be known that Figure 3The type and the installation position of the switching device 1 used in the illustrated embodiment are only an alternative embodiment of the present application. In other alternative embodiments, the switching device 1 may also be other types of electronic devices such as PMOS transistors, IGBT power devices, or triodes that can switch between on and off states according to the level. In addition to corresponding to the fourth diode D4, its installation position may also correspond to the first diode D1, or the second diode D2, or the third diode D3.

[0047] In some alternative embodiments, the braking signal may be a continuous level signal. For example, in Figure 3 , when the switching device receives a continuous high-level signal, it conducts between its first end and its second end. In some other embodiments, the braking signal may also be an alternating level signal. For example, in Figure 3 , when the switching device 1 receives an alternating level signal with a changing frequency or a PWM signal, it conducts between its first end and its second end during the high-level period of the above alternating level signal.

[0048] The working processes of the single-phase rectifier bridge circuit, the switching device 1, and the electronic control unit will be described below in conjunction with Figure 4 and Figure 5 .

[0049] As Figure 4 shows, when the induced electromotive force corresponding to the a end is in the positive half-cycle, the induced electromotive force corresponding to the b end is in the negative half-cycle. The induced current flows from the first diode D1 through the electronic control unit and then back to the b end through the fourth diode D4. During this period, the single-phase rectifier bridge circuit can supply power to the electronic control unit. Since in this half-cycle, regardless of whether the first end and the second end of the switching device 1 are conducted (that is, regardless of whether the braking current path is conducted), the current will pass through the electronic control unit. Therefore, it can be ensured that as long as the wire cup rotates, the single-phase rectifier bridge circuit can provide stable power supply to the electronic control unit during this period, thereby ensuring that when the wire cup rotates for the first time after being unused for a long time, the electronic control unit can be started to enter the working state.

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

[0051] Through Figure 4 、 Figure 5 It can be seen that the spool with electronically controllable braking provided by the present application adds a single-phase rectifier bridge circuit to the existing spool with electronically controllable braking function, and is provided with a switching device. The single-phase rectifier bridge circuit is used to convert the alternating current generated by the rotation of the spool into direct current to realize the power supply to the electronic control unit, and then the electronic control unit controls the switching device to generate a braking current by turning on the braking current path when braking is required.

[0052] The self-powered braking control of the spool is realized by the cooperation of the single-phase rectifier bridge circuit and the switching device, without the need to separately set a large-capacity battery. That is, it can ensure that when the spool is not used for a long time, reliable braking control can be carried out as long as it starts to rotate. In addition, the number of circuit components in the whole circuit is small and the structure is simple, effectively meeting the requirements for miniaturization and integration of the fishing reel.

[0053] At the same time, it should be emphasized that by Figure 4 、 Figure 5From the analysis of the working process, it can be seen that when the induced electromotive force at the a end is in the positive half cycle, even if the switching device receives the braking signal and conducts the braking current path, there is no braking current in this path (that is, the conduction of the braking current path does not necessarily mean that there will be a braking current in it), so braking cannot be performed. It can only generate a braking current by conducting the first end and the second end when the induced electromotive force at the a end is in the negative half cycle. Therefore, when the switching device is arranged in the single-phase rectifier bridge circuit and is correspondingly arranged with one of the diodes, the upper limit of the duration for which the first end and the second end of the switching device can generate a braking current in the conducting state is 1 / 2 of the rotation period of the wire cup. By restricting the effective period of the braking action, it can be ensured that in any case, the rotation of the wire cup can supply power to the electronic control unit for at least half of the period.

[0054] In some preferred embodiments, the electronic control unit includes an MCU module, and the MCU module is used to obtain the rotational speed of the rotor part relative to the stator part and generate a braking signal for controlling the braking of the rotor part based on the rotational speed. The techniques for detecting or sampling the rotational speed to determine information such as the speed and acceleration of the rotor part are already known to those skilled in the art and will not be elaborated here.

[0055] In some preferred embodiments, the electronic control unit may further include a power storage module. The power storage module preferably can be composed of components such as power storage capacitors. It should be noted that the function of setting the power storage module is different from that of setting a rechargeable lithium battery module or dry battery for the electronic control unit in the prior art. Its purpose is not to continuously supply power to power-consuming functional modules such as the MCU in the state of long-term non-use, but to temporarily store the electric energy generated by the current rotation after the rotor part rotates and enables the single-phase rectifier bridge circuit to generate electricity, so that the electronic control unit will not lose power due to the supply current not flowing through the electronic control unit during the process of controlling the braking.

[0056] Obviously, since in Figure 3 the shown embodiment, the single-phase rectifier bridge circuit will provide a supply current at least in half of the rotation period, therefore, the power storage module only needs to ensure that it can supply power to the electronic control unit within the remaining 1 / 2 period of the rotor rotation. Therefore, the capacity and size of the power storage module can be set extremely small to meet the requirements of product miniaturization and integration. For example, in some preferred embodiments, the power storage module can be a supercapacitor, its capacity does not exceed 1 F, and its maximum size does not exceed 5 cm; further, when using a low-power MCU with a supply voltage of 3.3 V, the capacity of the supercapacitor can be no more than 0.22 F, the diameter does not exceed 7 mm, and the height does not exceed 2 mm.

[0057] In some preferred embodiments, an independent third induction coil can also be added to the stator part. The third induction coil may not be involved in powering the electronic control unit, but only used for braking the spool.

[0058] Figure 6 The circuit schematic diagram shows the situation when the third induction coil is added to the stator part, as Figure 6 shown. The enable terminal of the switching device 1 is still connected to the braking signal output terminal S-out of the electronic control unit, and its first terminal and second terminal are respectively connected to both ends of the third induction coil (terminal c and terminal d in the figure).

[0059] Obviously, in this connection mode, when the switching device receives the braking signal sent by the electronic control unit at its enable terminal, it will conduct its first terminal and second terminal, thus forming a current path that connects the first terminal and second terminal of the third induction coil and does not pass through the electronic control unit. Since the third induction coil is not connected to the rectifier bridge circuit and there is no diode to cut off the current flow direction, therefore, as long as the third induction coil is short-circuited during the rotation of the spool, braking current can be generated, that is, when the switching device 1 adopts Figure 6 the shown setting mode, the upper limit of the duration for which its first terminal and second terminal can generate braking current in the conducting state is equal to the rotation period of the spool. In this way, the power supply to the electronic control unit and the braking control of the spool can be isolated from each other, ensuring that the two operations do not affect each other.

[0060] It should be noted that Figure 6 the shown embodiment can also be compatible with Figure 3 the shown embodiment, that is, the switching device 1 can also be two. For example, as Figure 7 shown, the first terminal and second terminal of one switching device 1 are connected to both ends of the third induction coil, and the other switching device 1 is arranged in the single-phase rectifier bridge circuit. By using this setting mode, the braking force on the spool can be further increased.

[0061] Some embodiments of the present application also provide a fishing reel, which includes a housing, a handle, and the electronically controllable braking spool described above. The specific combination modes of the above housing, handle and spool can refer to various existing fishing reels with electronically controllable braking functions, and will not be elaborated here.

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

Claims

1. A spool cup capable of electrically controlled braking, comprising a cylindrical cup body, a stator part, a rotor part and an electronic control unit, characterized in that: It also includes 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 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, and the rotor part can rotate coaxially relative to the stator part, and includes a plurality of magnets arranged at intervals along the circumferential direction on the inner wall of the cup body, and the polarities of adjacent magnets are opposite; The two AC ends of the single-phase rectifier bridge circuit are respectively connected to the second end of the first induction coil and the second end of the second induction coil, and the two DC ends are connected to the power supply end of the electronic control unit; The enabling end of the switch device is connected to the brake signal output end 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.

2. The spool with electronically controllable brake 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 braking current path is a current path connecting the second end of the first induction coil and the second end of the second induction coil, and does not pass through the electronic control unit.

3. The spool with electronically controllable brake according to claim 2, characterized in that: The upper limit of the time length during which the first end and the second end of the switch device can generate a braking current in the on state is 1 / 2 of the rotation period of the wire cup.

4. The spool with electronically controllable brake according to claim 1, characterized in that: The brake signal is a continuous level signal or an alternating level signal.

5. The spool capable of electrically controlling braking according to claim 1, characterized in that: The switch device is a MOS tube, an IGBT power device or a triode.

6. The spool with electronically controllable brake according to claim 1, characterized in that: The electronic control unit includes an MCU module, which is used to obtain the rotation speed of the rotor part relative to the stator part and generate the brake signal based on the rotation speed.

7. The spool capable of electrically controlled braking according to claim 1, characterized in that: The electric control unit further comprises a power storage module, which is used to supply power to the electric control unit when a braking current exists between the first end and the second end of the switch device.

8. The spool capable of electrically controlling a brake according to claim 7, characterized in that: The diameter of the electricity storage module is no greater than 7 mm, and the height is no greater than 2 mm.

9. The spool capable of electrically controlling braking according to claim 1, characterized in that: The stator portion further includes a third induction coil; The first end and the second end of the switch device are respectively connected to the two ends of the third induction coil, and the brake current path is a current path connecting the first end and the second end of the third induction coil and not passing through the electronic control unit.

10. The spool capable of electrically controlled braking according to claim 9, characterized in that: The upper limit of the time length during which the first end and the second end of the switch device can generate the braking current in the on state is equal to the rotation period of the wire cup.

11. A fishing reel, characterized in that: include: A housing, a handle, and a spool capable of electrically controlling a brake as claimed in claim 1.

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