External magnetic control device

Abstract

The utility model discloses an external magnetic control device which comprises a swing arm, a magnetic element, a shell, a driving assembly, a potentiometer and an internal circuit board, the magnetic element is arranged on the swing arm, one end portion of the swing arm is rotatably installed on the shell in a mode that the magnetic element faces a bottom side opening of the shell, and the other end portion of the swing arm is rotatably installed on the shell. The driving assembly comprises a driving motor, a sector gear, a transmission assembly and a connecting rod, the driving motor is fixedly installed in the shell space of the shell, the sector gear is rotatably installed in the shell space of the shell, and the transmission assembly is connected with an output shaft of the driving motor and the sector gear; the two opposite ends of the connecting rod are rotationally installed at one end of the sector gear and one end of the swing arm respectively, the fixed part of the potentiometer is fixedly installed on the shell, the movable part of the potentiometer is drivably connected to the sector gear, and the internal circuit board is arranged in the shell space of the shell and provided with a first connecting part. The first connecting part corresponds to the side opening of the shell, and the driving motor and the potentiometer are connected to the internal circuit board.

Description

Technical Field

[0001] The utility model relates to the field of fitness equipment, and particularly to an external magnetic control device. Background Art

[0002] The Chinese utility model patent with the authorization publication number of CN219783676U discloses a magnetic control module for a spinning bike, which includes a mounting shell. At the bottom end on the right side inside the mounting shell, a driving motor is arranged, and a driver is drivingly arranged at the top of the driving motor. At the top of the driver, a second connecting column is arranged, and the second connecting column is fixedly arranged on the mounting shell. The second connecting column is sleeved with a first gear, and the first gear is drivingly connected with the driver. At the top end on the right side inside the mounting shell, a speed limiter is arranged, and a cam rod is arranged at the connection between the speed limiter and the mounting shell. The cam rod swings on the mounting shell, and the side of the cam rod is drivingly connected with the first gear. At the left side of the cam rod, a driving rod is movably connected, and the other end of the driving rod is movably provided with an arc-shaped plate. The arc-shaped plate is located at the left side inside the mounting shell, and a magnetic steel sheet is arranged at the left side of the arc-shaped plate. The existing magnetic control module for a spinning bike is not configured with a dedicated circuit board, which leads to the need to conduct the driving motor and the speed limiter of the magnetic control module for a spinning bike with wires and the vehicle circuit respectively after the magnetic control module for a spinning bike is installed on the vehicle. This not only makes the installation process cumbersome, but also easily causes the problem that the magnetic control module for a spinning bike and the vehicle control system are not matched. Summary of the Utility Model

[0003] An object of the present utility model is to provide an external magnetic control device. In some embodiments, an external circuit board is arranged outside the housing of the external magnetic control device, and the driving motor and the position detection unit are both connected to the external circuit board. In this way, the external circuit board can not only associate the driving motor and the position detection unit, but also allow the external circuit board with different functions to be replaced without disassembling the housing, so as to facilitate the function expansion and update of the external magnetic control device.

[0004] An object of the present utility model is to provide an external magnetic control device. In some embodiments, an internal circuit board is arranged inside the housing of the external magnetic control device, and the position of the first conduction member of the internal circuit board corresponds to the position of the side opening of the housing. The driving motor and the position detection unit are both connected to the internal circuit board. In this way, when the external magnetic control device is installed on the vehicle, the external circuit board with different functions can be selected, and the external circuit board can be conveniently conducted with the internal circuit board through the first conduction member.

[0005] An object of the present utility model is to provide an external magnetic control device. When the external circuit board is installed on the housing, the second conducting member of the external circuit board is inserted into the first conducting member of the internal circuit board. In this way, not only can the external circuit board and the internal circuit board be conveniently conducted, but also there is no physical circuit exposed between the internal circuit board and the external circuit board. Therefore, during the process of installing the external magnetic control device on a vehicle, the reliability of the conduction relationship between the external circuit board and the internal circuit board can be ensured.

[0006] An object of the present utility model is to provide an external magnetic control device, in which a worm and a transmission gear mounted on the output shaft of the drive motor are held in a closed grease chamber of the housing and the grease chamber is filled with grease. In this way, it is beneficial to reduce the wear of the worm and the transmission gear, improve the reliability and stability of the external magnetic control device, and at the same time is beneficial to keep the external magnetic control device quiet.

[0007] According to an aspect of the present utility model, the present utility model provides an external magnetic control device, which includes:

[0008] The external magnetic control device is characterized by including:

[0009] A swing arm;

[0010] At least one magnetic element, wherein the magnetic element is arranged on one side of the swing arm;

[0011] A housing, wherein the housing has a housing space and a bottom side opening, and the bottom side opening communicates the housing space with the external environment;

[0012] A drive unit, wherein the drive unit includes a drive motor, the drive motor is fixedly installed in the housing space of the housing, wherein the pivot end of the swing arm is rotatably installed on the housing, the driven end of the swing arm is drivably connected to the drive motor, and the swing arm holds the magnetic element at a position facing the bottom side opening of the housing;

[0013] A position detection unit, wherein the position detection unit is used to detect the swing position of the swing arm, and the position detection unit is associated with the drive motor; and

[0014] An external circuit board, wherein the external circuit board is fixedly installed outside the housing, and the drive motor and the position detection unit are respectively connected to the external circuit board.

[0015] As a possible implementation, the driving unit further includes a sector gear, a connecting rod, and a transmission assembly. The sector gear has a shaft side and a wheel side with opposite positions. The sector gear is rotatably mounted in the housing space of the housing. The opposite ends of the connecting rod are respectively rotatably mounted on the shaft side of the sector gear and the driven end of the swing arm. The transmission assembly connects the output shaft of the driving motor and the wheel side of the sector gear.

[0016] As a possible implementation, the housing has a grease chamber, a first opening, and a second opening that are respectively communicated with the grease chamber. The driving motor closes the first opening of the housing, and the output shaft of the driving motor extends into the grease chamber through the first opening of the housing. Wherein the transmission assembly includes a worm and a plurality of transmission gears. The worm is mounted on the output shaft of the driving motor and is rotatably held in the grease chamber of the housing. Adjacent two of the transmission gears are meshed with each other. One of the transmission gears extends into the grease chamber through the second opening of the housing and then meshes with the worm. The other transmission gear meshes with the wheel side of the sector gear. Wherein the grease chamber of the housing is filled with grease.

[0017] As a possible implementation, the transmission assembly includes a spur gear, a worm, and a plurality of transmission gears. The spur gear is mounted on the output shaft of the driving motor. The worm is rotatably arranged in the housing space of the housing and is meshed with the spur gear. Adjacent two of the transmission gears are meshed with each other. One of the transmission gears meshes with the worm. The other transmission gear meshes with the wheel side of the sector gear.

[0018] As a possible implementation, the housing has a grease chamber, a first opening, and a second opening that are respectively communicated with the grease chamber. The output shaft of the driving motor extends into the grease chamber through the first opening of the housing. The end of the connecting rod for connecting the sector gear extends into the grease chamber through the second opening of the housing. The spur gear, the worm, each of the transmission gears, and the sector gear are respectively rotatably held in the grease chamber of the housing.

[0019] As a possible implementation, the position detection unit is a potentiometer, which includes a fixed part and a rotating part that is rotatably mounted on the fixed part. The fixed part is fixedly mounted on the housing. The rotating part is drivably connected to the sector gear.

[0020] As a possible implementation, the housing has a shaft hole that communicates the housing space with the external environment. The rotating part of the potentiometer has an assembly hole, and the fixed part of the potentiometer is fixedly installed outside the housing. The position of the assembly hole of the rotating part corresponds to the position of the shaft hole of the housing. Wherein the assembly shaft of the sector gear is installed in the assembly hole of the rotating part after passing through the shaft hole of the housing, so as to allow the rotating part to be drivably connected to the sector gear.

[0021] As a possible implementation, the housing has a detection hole that communicates the housing space with the external environment. Wherein the position detection unit includes a grid disk and a detection element. The grid disk is installed on the drive motor and has at least one light path channel. The grid disk extends to the outside of the housing through the detection hole of the housing. The detection element is mounted on the external circuit board and has a transmitting part and a receiving part with opposite positions. The receiving part is used to receive the light emitted by the transmitting part. The transmitting part and the receiving part of the detection element are located on opposite sides of the grid disk, so as to allow the light emitted by the transmitting part to reach the receiving part through the light path channel of the grid disk.

[0022] As a possible implementation, the external magnetic control device includes an internal circuit board that is fixedly arranged in the housing space of the housing. The drive motor and the position detection unit are respectively connected to the internal circuit board. Wherein the internal circuit board and the external circuit board are connected.

[0023] As a possible implementation, the housing has a side opening that communicates the housing space with the external environment. Wherein the internal circuit board has a first conduction component, and the position of the first conduction component corresponds to the position of the side opening of the housing. Wherein the external circuit board has a second conduction component, and the second conduction component of the external circuit board is inserted into the first conduction component of the internal circuit board.

[0024] According to another aspect of the present invention, the present invention further provides an external magnetic control device, which includes:

[0025] A swing arm;

[0026] At least one magnetic element, wherein the magnetic element is arranged on one side of the swing arm;

[0027] A housing, wherein the housing has a housing space, a bottom side opening and a side opening, and the bottom side opening and the side opening respectively communicate the housing space with the external environment;

[0028] A driving unit, wherein the driving unit includes a driving motor, the driving motor is fixedly installed in the housing space of the housing, wherein the pivoting end of the swing arm is rotatably installed on the housing, the driven end of the swing arm is drivably connected to the driving motor, and the swing arm holds the magnetic element at a position facing the bottom side opening of the housing;

[0029] A position detection unit, wherein the position detection unit is used to detect the swinging position of the swing arm, and the position detection unit is associated with the driving motor; and

[0030] An internal circuit board, wherein the internal circuit board has a first conduction member, the internal circuit board is fixedly arranged in the housing space of the housing, and the position of the first conduction member of the internal circuit board corresponds to the position of the side opening of the housing.

[0031] As a possible implementation, the driving unit further includes a sector gear, a connecting rod and a transmission assembly. The sector gear has an axle side and a wheel side with opposite positions. The sector gear is rotatably installed in the housing space of the housing. The opposite ends of the connecting rod are respectively rotatably installed on the axle side of the sector gear and the driven end of the swing arm. The transmission assembly connects the output shaft of the driving motor and the wheel side of the sector gear.

[0032] As a possible implementation, the housing has a grease chamber and a first opening and a second opening respectively communicating with the grease chamber. The driving motor closes the first opening of the housing. The output shaft of the driving motor extends into the grease chamber through the first opening of the housing. Wherein the transmission assembly includes a worm and a plurality of transmission gears. The worm is installed on the output shaft of the driving motor and is rotatably held in the grease chamber of the housing. Adjacent two of the transmission gears mesh with each other. One of the transmission gears extends into the grease chamber through the second opening of the housing and meshes with the worm. The other transmission gear meshes with the wheel side of the sector gear, and the grease chamber of the housing is filled with grease.

[0033] As a possible implementation, the transmission assembly includes a straight tooth, a worm and a plurality of transmission gears. The straight tooth is installed on the output shaft of the driving motor. The worm is rotatably arranged in the housing space of the housing, and the worm meshes with the straight tooth. Adjacent two of the transmission gears mesh with each other. One of the transmission gears meshes with the worm. The other transmission gear meshes with the wheel side of the sector gear.

[0034] As a possible implementation, the housing has a grease chamber, a first opening and a second opening that are respectively communicated with the grease chamber. The output shaft of the driving motor extends into the grease chamber through the first opening of the housing. The end of the connecting rod for connecting the sector gear extends into the grease chamber through the second opening of the housing. The straight teeth, the worm, each of the transmission gears and the sector gear are respectively rotatably held in the grease chamber of the housing.

[0035] As a possible implementation, the position detection unit is a potentiometer, which includes a fixed part and a rotating part rotatably mounted on the fixed part. The fixed part is fixedly mounted on the housing, and the rotating part is drivingly connected to the sector gear.

[0036] As a possible implementation, the housing has a shaft hole that communicates the housing space and the external environment. The rotating part of the potentiometer has an assembly hole. The fixed part of the potentiometer is fixedly mounted outside the housing. The position of the assembly hole of the rotating part corresponds to the position of the shaft hole of the housing. The assembly shaft of the sector gear is mounted in the assembly hole of the rotating part after passing through the shaft hole of the housing, so as to allow the rotating part to be drivingly connected to the sector gear.

[0037] As a possible implementation, the housing has a detection hole that communicates the housing space and the external environment. The position detection unit includes a grid disk and a detection element. The grid disk is mounted on the driving motor and has at least one light path channel. The grid disk extends to the outside of the housing through the detection hole of the housing. The detection element is mounted on the external circuit board and has a transmitting part and a receiving part that are opposite in position. The receiving part is used to receive the light emitted by the transmitting part. The transmitting part and the receiving part of the detection element are located on opposite sides of the grid disk, so as to allow the light emitted by the transmitting part to reach the receiving part through the light path channel of the grid disk.

[0038] As a possible implementation, the external magnetic control device includes an internal circuit board, which is fixedly arranged in the housing space of the housing. The driving motor and the position detection unit are respectively connected to the internal circuit board, and the internal circuit board and the external circuit board are connected. Description of the Drawings

[0039] Figure 1 is a schematic diagram of a perspective view of an external magnetic control device according to a preferred embodiment of the present invention.

[0040] Figure 2 It is a schematic diagram of another perspective of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0041] Figure 3 It is a schematic diagram of yet another perspective of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0042] Figure 4 It is an exploded schematic diagram of one perspective of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0043] Figure 5 It is an exploded schematic diagram of another perspective of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0044] Figure 6 It is a cross-sectional schematic diagram of a partial structure of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0045] Figure 7 It is a three-dimensional schematic diagram of another partial structure of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0046] Figure 8 It is an exploded schematic diagram of one perspective of the above-mentioned partial structure of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0047] Figure 9 It is an exploded schematic diagram of another perspective of the above-mentioned partial structure of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0048] Figure 10 It is a schematic diagram of yet another partial structure of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0049] Figure 11 It is a three-dimensional schematic diagram of the external magnetic control device according to a preferred embodiment of the present utility model.

[0050] Figure 12 It is an exploded schematic diagram of one perspective of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0051] Figure 13 It is an exploded schematic diagram of another perspective of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0052] Figure 14 It is a schematic diagram of a partial structure of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0053] Figure 15It is a three-dimensional schematic diagram of another partial structure of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0054] Figure 16 It is a three-dimensional sectional schematic diagram of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model.

[0055] Figure 17 It is a sectional schematic diagram of a position of the external magnetic control device according to the above-mentioned preferred embodiment of the present utility model. Detailed implementation manners

[0056] Before detailing any embodiment of the present utility model, it should be understood that in its application, the present utility model is not limited to the construction and arrangement details of the components described in the following description or illustrated in the following drawings. The present utility model is capable of other embodiments and can be practiced or carried out in various ways. Additionally, it should be understood that the wording and terminology used herein are for the purpose of description and should not be regarded as restrictive. As used herein, "comprising" or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported", and "coupled" and their variants are used broadly and cover direct and indirect mounting, connection, support, and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0057] And, on the one hand, in the disclosure of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, the above terms should not be construed as limiting the present utility model; on the other hand, the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "a" should not be construed as limiting the quantity.

[0058] Att Figures 1 to 10 Shows an external magnetic control device according to a preferred embodiment of the present utility model, which includes a housing 10, a swing arm 20, a magnetic element 30, a driving unit 40, a position detection unit 50, and an internal circuit board 60.

[0059] The housing 10 has a housing space 101, a bottom opening 102, and a side opening 103. The bottom opening 102 and the side opening 103 communicate with the housing space 101 and the external environment respectively. The swing arm 20 has a pivot end 21 and a driven end 22 which are opposite to each other. The pivot end 21 of the swing arm 20 is rotatably mounted on the housing 10, and the swing arm 20 is arranged to be able to swing at the position of the bottom opening 102 of the housing 10. The magnetic element 30 is arranged on one side of the swing arm 20. For example, the magnetic element 30 can be adhered to one side of the swing arm 20 by glue. In this way, the swing arm 20 can hold the magnetic element 30 at the position of the bottom opening 102 of the housing 10. In some embodiments, the swing arm 20 extends bendedly, and the magnetic element 30 is arranged on the concave side of the swing arm 20. The drive unit 40 includes a drive motor 41. The driven end 22 of the swing arm 20 is drivably connected to the drive motor 41. The drive motor 41 is used to drive the swing arm 20 and the magnetic element 30 to swing at the position of the bottom opening 102 of the housing 10. The position detection unit 50 is used to detect the swing position of the swing arm 20 and the magnetic element 30, and the position detection unit 50 is associated with the drive motor 41. During the process of the drive motor 41 driving the swing arm 20 and the magnetic element 30 to swing, the position detection unit 50 is used to detect whether the swing arm 20 and the magnetic element 30 swing in place. If the position detection unit 50 detects that the swing arm 20 and the magnetic element 30 swing in place, the drive motor 41 stops. The internal circuit board 60 is fixedly arranged in the housing space 101 of the housing 10. The drive motor 41 and the position detection unit 50 are respectively connected to the internal circuit board 60. In this way, the internal circuit board 60 can associate the drive motor 41 and the internal circuit board 60.

[0060] In a feasible example of the present utility model, the internal circuit board 60 may include a microprocessor (MicroControl Unit, MCU). In this way, the internal circuit board 60 can control the working state of the drive motor 41 according to the signal fed back by the position detection unit 50. For example, when the position detection unit 50 detects that the swing arm 20 and the magnetic element 30 are driven by the drive motor 41 and swing in place, the position detection unit 50 feeds back a signal to the internal circuit board 60. At this time, the internal circuit board 60 can generate an instruction to control the drive motor 41 to stop.

[0061] In the attached Figures 1 to 10In this specific example of the external magnetic control device shown, the internal circuit board 60 has a first conducting member 61, and the position of the first conducting member 61 corresponds to the position of the side opening 103 of the housing 10. In this way, after the external magnetic control device is installed in a vehicle, the internal circuit board 60 of the external magnetic control device can be conveniently connected to other circuits through the first conducting member 61.

[0062] For example, in the Figures 1 to 10 In this specific example of the external magnetic control device of the present invention shown, the external magnetic control device further includes an external circuit board 70. The external circuit board 70 has a second conducting member 71. The external circuit board 70 is located outside the housing 10, and the external circuit board 70 can be conveniently connected to the internal circuit board 60 through the second conducting member 71 and the first conducting member 61. In this way, the external magnetic control device does not require the internal circuit board 60 to include a microprocessor, but integrates the microprocessor on the external circuit board 70. In other words, in some embodiments of the external magnetic control device of the present invention, the internal circuit board 60 can only be used as a circuit connection member for connecting the drive motor 41 and the position detection unit 50 to the external circuit board 70. In this way, without the need to disassemble the housing 10, the external magnetic control device allows the replacement of the external circuit board 70 with different functions, so as to facilitate the function expansion and update of the external magnetic control device. That is, when the external magnetic control device is installed in a vehicle, the external magnetic control device allows the selection of external circuit boards 70 with different functions, and the external circuit board 70 can be conveniently connected to the internal circuit board 60 through the first conducting member 61. For example, the external circuit board 70 with a Bluetooth module, a Wifi module or a circuit protection module can be selected.

[0063] By arranging the internal circuit board 60 inside the housing 10 and the external circuit board 70 outside the housing 10, when the microcontroller is integrated on the external circuit board 70, the internal circuit board 60 can also integrate a protection module or a protection circuit to avoid the problem that the position detection unit 50 is damaged due to the excessive swing positions of the swing arm 20 and the magnetic element 30 driven by the drive motor 41. It can be understood that in the embodiment where the internal circuit board 60 is integrated with a protection module or a protection circuit, the external magnetic control device does not require the external circuit board 70 to be designed with a protection module or a protection circuit. Especially when the external circuit board 70 is independently designed by the vehicle manufacturer, by integrating a protection module or a protection circuit on the internal circuit board 60 of the external magnetic control device, after the external magnetic control device is provided to the vehicle manufacturer, there is no need to worry about the situation that the position detection unit 50 is damaged because the external circuit board 70 omits the design of a protection module or a protection circuit and the swing positions of the swing arm 20 and the magnetic element 30 driven by the drive motor 41 are excessive, which is beneficial to improving the reliability of the external magnetic control device.

[0064] In order to reasonably arrange the structures of various parts of the external magnetic control device to miniaturize the external magnetic control device, in this specific example of the external magnetic control device of the present utility model, the drive unit 40 further includes a sector gear 42, a connecting rod 43, and a transmission assembly 44. The sector gear 42 has an axial side 421 and a wheel side 422 with opposite positions. The sector gear 42 is rotatably installed in the housing space 101 of the housing 10. The opposite ends of the connecting rod 43 are respectively rotatably installed on the axial side 421 of the sector gear 42 and the driven end 22 of the swing arm 20. The transmission assembly 44 connects the output shaft 411 of the drive motor 41 and the wheel side 422 of the sector gear 42. When the output shaft 411 of the drive motor 41 rotates in one direction, after the transmission assembly 44 transmits power to the sector gear 42 to make the sector gear 42 rotate in one direction, the connecting rod 43 can push the swing arm 20 and the magnetic element 30 to swing in the direction close to the bottom side opening 102 of the housing 10. Correspondingly, when the output shaft 411 of the drive motor 41 rotates in the opposite direction, after the transmission assembly 44 transmits power to the sector gear 42 to make the sector gear 42 rotate in the opposite direction, the connecting rod 43 can pull the swing arm 20 and the magnetic element 30 to swing in the direction away from the bottom side opening 102 of the housing 10.

[0065] In this specific example of the external magnetic control device of the present utility model, the transmission assembly 44 includes a worm 441 and a plurality of transmission gears 442. Among them, the worm 441 is installed on the output shaft 411 of the drive motor 41. When the output shaft 411 of the drive motor 41 rotates, it can drive the worm 441 to rotate synchronously. Among them, adjacent transmission gears 442 mesh with each other, and one transmission gear 442 meshes with the worm 441, and the other transmission gear 442 meshes with the wheel side 422 of the sector gear 42. In this way, the transmission assembly 44 can transmit the power output by the output shaft 411 of the drive motor 41 to the sector gear 42 to drive the sector gear 42 to rotate, so that the sector gear 42 can push or pull the swing arm 20 and the magnetic element 30 to swing through the connecting rod 43.

[0066] Preferably, the housing 10 has a grease chamber 104, a first opening 105 and a second opening 106 that are respectively communicated with the grease chamber 104. The drive motor 41 closes the first opening 105 of the housing 10, and the output shaft 411 of the drive motor 41 extends to the grease chamber 104 through the first opening 105 of the housing 10. In this way, the worm 441 is rotatably held in the grease chamber 104 of the housing 10. A transmission gear 442 extends into the grease chamber 104 through the second opening 106 of the housing 10, and this transmission gear 442 meshes with the worm 441. The grease chamber 104 of the housing 10 is filled with grease. In this way, the grease can play a lubricating role, which is beneficial to reducing the wear of the worm 441 and the transmission gear 442 and improving the reliability and stability of the external magnetic control device. At the same time, it is beneficial to keep the external magnetic control device quiet.

[0067] Particularly, since the first opening 105 of the housing 10 is closed by the drive motor 41, the size of the second opening 106 of the housing 10 is slightly larger than the size of the transmission gear 442 corresponding to the position of the second opening 106 of the housing 10. In this way, the grease chamber 104 of the housing 10 forms a substantially closed space to prevent the grease from being thrown out, thereby ensuring the lubrication effect of the grease on the worm 441 and the transmission gear 442.

[0068] Refer to the appendix Figures 1 to 10, the housing 10 includes a bottom case 11 and a top cover 12, and the bottom case 11 and the top cover are installed with each other to form the housing space 101, the bottom side opening 102, the grease chamber 104 and the second opening 106 between the bottom case 11 and the top cover 12. The side opening 103 and the first opening 105 of the housing 10 are both formed in the bottom case 11.

[0069] It is worth mentioning that the installation method of the bottom case 11 and the top cover 12 is not limited in the external magnetic control device of the present utility model. For example, in Figures 1 to 10 this specific example of the external magnetic control device shown, after the bottom case 11 and the top cover 12 are stacked, screws are used to lock the bottom case 11 and the top cover 12, so as to form the housing space 101, the bottom side opening 102, the grease chamber 104 and the second opening 106 between the bottom case 11 and the top cover 12.

[0070] The inner wall of the bottom shell 11 has a bottom shell enclosure wall 111 and an assembly plate 112 located at one end of the bottom shell enclosure wall 111. The bottom shell enclosure wall 111 has a bottom shell enclosure wall groove 1111 and a bottom shell enclosure wall notch 1112 communicating with the bottom shell enclosure wall groove 1111. The first opening 105 of the housing 10 is formed in the assembly plate 112, and the first opening 105 of the housing 10 communicates with the bottom shell enclosure wall groove 1111. Correspondingly, the inner wall of the top cover 12 has a top cover enclosure wall 121. The top cover enclosure wall 121 has a top cover enclosure wall groove 1211, a top cover enclosure wall notch 1212 and a top cover enclosure wall avoidance opening 1213 respectively communicating with the top cover enclosure wall groove 1211. After the output shaft 411 of the drive motor 41 and the worm 441 mounted on the output shaft 411 extend into the bottom shell enclosure wall groove 1111 of the bottom shell enclosure wall 111 of the bottom shell 11 through the first opening 105 of the housing 10, the assembly plate 112 of the bottom shell 11 and the drive motor 41 can be locked by screws. At this time, the drive motor 41 can close the first opening 105 of the housing 10. After the top cover 12 is installed on the bottom shell 11, the position of the top cover enclosure wall groove 1211 of the top cover enclosure wall 121 of the top cover 12 corresponds to the position of the bottom shell enclosure wall groove 1111 of the bottom shell enclosure wall 111 of the bottom shell 11 to form the grease chamber 104 of the housing 10. At this time, the worm 441 is located in the grease chamber 104 of the housing 10. The position of the top cover enclosure wall notch 1212 of the top cover enclosure wall 121 of the top cover 12 corresponds to the position of the bottom shell enclosure wall notch 1112 of the bottom shell enclosure wall 111 of the bottom shell 11 to form the second opening 106 of the housing 10. At the same time, the assembly plate 112 of the bottom shell 11 closes the top cover enclosure wall avoidance opening 1213 of the top cover enclosure wall 121 of the top cover 12.

[0071] It can be understood that since the drive motor 41 and the assembly plate 112 of the bottom shell 11 can be locked by screws, the drive motor 41 is fixedly arranged in the housing space 101 of the housing 10. To prevent the drive motor 41 from shaking in the housing space 101 of the housing 10, the bottom shell 11 and the top cover 12 can clamp the drive motor 41 on opposite sides of the drive motor 41.

[0072] Refer to the attached Figure 4 、 Figure 5 、 Figure 8 and Figure 9, the bottom case 11 has a bottom case shaft hole 113, the top cover 12 has a top cover shaft hole 122, and the positions of the bottom case shaft hole 113 of the bottom case 11 correspond to the positions of the top cover shaft hole 122 of the top cover 12. Wherein, opposite sides of the sector gear 42 respectively have an assembly shaft 423. One of the assembly shafts 423 of the sector gear 42 is rotatably assembled in the bottom case shaft hole 113 of the bottom case 11, and the other assembly shaft 423 is rotatably assembled in the top cover shaft hole 122 of the top cover 12. In this way, the sector gear 42 is rotatably arranged in the housing space 101 of the housing 10. Correspondingly, opposite sides of each of the transmission gears 442 of the transmission assembly 44 are respectively rotatably mounted on the bottom case 11 and the top cover 12, so that each of the transmission gears 442 is rotatably arranged in the housing space 101 of the housing 10.

[0073] In the Figures 1 to 10 In this specific example of the external magnetic control device of the present invention shown in the appendix, the position detection unit 50 is a potentiometer, which includes a fixed part 51 and a rotating part 52 rotatably mounted on the fixed part 51. The fixed part 51 is fixedly mounted on the housing 10, and the rotating part 52 is drivingly connected to the sector gear 42. In this way, the position detection unit 50 is associated with the drive motor 41 through the sector gear 42 and the transmission assembly 44. When the output shaft 411 of the drive motor 41 drives the sector gear 42 to rotate through the transmission assembly 44, and the sector gear 42 pushes or pulls the swing arm 20 and the magnetic element 30 to swing through the connecting rod 43, the sector gear 42 drives the rotating part 52 to rotate and changes the resistance value of the position detection unit 50. It can be understood that the resistance value of the position detection unit 50 implemented as a potentiometer, the rotation angle of the sector gear 42, and the swing positions of the swing arm 20 and the magnetic element 30 are in one-to-one correspondence. Therefore, by detecting the resistance value of the position detection unit 50, the swing positions of the swing arm 20 and the magnetic element 30 can be determined to achieve precise control of the positions of the swing arm 20 and the magnetic element 30.

[0074] In the external magnetic control device of the present utility model, the association mode between the position detection unit 50 and the drive motor 41 includes not only mechanical association but also signal association. The mechanical association mode between the position detection unit 50 and the drive motor 41 is that the sector gear 42 is drivably connected to the drive motor 41 through the transmission assembly 44. When the drive motor 41 drives the sector gear 42 to rotate through the transmission assembly 44, the sector gear 42 drives the rotating part 52 of the position detection unit 50 to rotate, thereby changing the resistance value of the position detection unit 50. The signal association mode between the position detection unit 50 and the drive motor 41 is that both the drive motor 41 and the position detection unit 50 are connected to the internal circuit board 50. When the position detection unit 50 detects that the swing arm 20 and the magnetic element 30 have swung in place, the drive motor 41 is controlled to stop.

[0075] Further, the bottom shell shaft hole 113 of the bottom shell 11 forms the shaft hole of the housing 10. The rotating part 52 of the position detection unit 50 has an assembly hole 521, and the position of the assembly hole 521 of the rotating part 52 corresponds to the position of the bottom shell shaft hole 113 of the bottom shell 11. The fixed part 51 of the position detection unit 50 is fixedly installed on the bottom shell 11. One assembly shaft 423 of the sector gear 42 is assembled into the assembly hole 521 of the rotating part 52 after passing through the bottom shell shaft hole 113 of the bottom shell 11, so as to allow the rotating part 52 to be drivably connected to the sector gear 42. In this way, when the sector gear 42 rotates, it drives the rotating part 52 of the position detection unit 50 to rotate, thereby changing the resistance value of the position detection unit 50.

[0076] Preferably, the bottom shell 11 has a wire threading channel 114, and the wire threading channel 114 communicates the housing space 101 of the housing 10 with the external environment. The wire of the fixed part 51 of the position detection unit 50 can extend into the housing space 101 of the housing 10 through the wire threading channel 114 of the housing 10 and is connected to the internal circuit board 60.

[0077] Preferably, the bottom shell 11 has a groove 115, and the wire threading channel 114 communicates the housing space 101 of the housing 10 with the groove 115. The fixed part 51 of the position detection unit 50 is arranged in the groove 115 of the bottom shell 11. In this way, the external magnetic control device can not only prevent the position detection unit 50 from protruding from the bottom shell 11 but also prevent the wire of the fixed part 51 from being exposed, that is, the wire of the fixed part 51 is visually invisible, which is beneficial to improving the integrity, aesthetics and reliability of the external magnetic control device.

[0078] Reference appendix Figures 2 to 5 Figures 2 to 5 , in this specific example of the external magnetic control device of the present utility model, the external circuit board 70 can be locked to the bottom case 11 by screws, and the second conducting member 71 of the external circuit board 70 and the first conducting member 61 of the internal circuit board 60 are plugged together. In this way, not only can the external circuit board 70 and the internal circuit board 60 be conveniently conducted, but also there is no exposed physical line between the internal circuit board 60 and the external circuit board 70. Therefore, during the process of installing the external magnetic control device on the vehicle, the reliability of the conduction relationship between the external circuit board 70 and the internal circuit board 60 can be ensured. At the same time, by allowing the second conducting member 71 of the external circuit board 70 and the first conducting member 61 of the internal circuit board 60 to be plugged and conducted, not only can the soldering process be omitted and the situation of solder joint misalignment during the soldering process be avoided, but also the assembly efficiency of the external magnetic control device can be greatly improved.

[0079] Continue to refer to the appendix Figures 2 to 6 Figures 2 to 6 , the external magnetic control device further includes a rechargeable battery 80, the rechargeable battery 80 is connected to the external circuit board 70, and the rechargeable battery 80 can supply electrical energy to the drive motor 41 and the position detection unit 50 through the external circuit board 70 and the internal circuit board 60.

[0080] Preferably, the rechargeable battery 80 is fixedly installed on the bottom case 11. In this way, the position of the rechargeable battery 80 is adjacent to the position of the external circuit board 70, and the position of the rechargeable battery 80 and the position of the external circuit board 70 are relatively fixed. By this means, it is beneficial to ensure the reliability of the connection relationship between the rechargeable battery 80 and the external circuit board 70.

[0081] Further, the external magnetic control device further includes at least one mounting member 90. The mounting member 90 can be mounted on the bottom case 11 by screws to press the rechargeable battery 80 against the bottom case 11, so that the rechargeable battery 80 is fixedly mounted outside the housing 10. Specifically, the rechargeable battery 80 can be a cylindrical battery. Correspondingly, the mounting member 90 extends in an arc shape, and the curvature of the mounting member 90 matches the appearance of the rechargeable battery 80. At least one end of the mounting member 90 is mounted on the bottom case 11 in a manner that the mounting member 90 semi-holds the rechargeable battery 80, thereby pressing the rechargeable battery 80 against the bottom case 11, and further enabling the rechargeable battery 80 to be fixedly mounted outside the housing 10. Preferably, the number of the mounting members 90 is two, and the two mounting members 90 are respectively fixedly mounted on the bottom case 11 at opposite ends of the rechargeable battery 80, so as to reliably mount the rechargeable battery 80 on the bottom case 11.

[0082] Preferably, the rechargeable battery 80 shields the groove 115 of the bottom case 11, making the position detection unit 50 visually invisible, thereby playing a role in protecting the position detection unit 50.

[0083] In the external magnetic control device of the present utility model, since both the external circuit board 70 and the rechargeable battery 80 are externally mounted, without disassembling the housing 10, if it is necessary to configure the rechargeable battery 80 for the external magnetic control device, the external magnetic control device needs to be configured with the external circuit board 70 having a charge and discharge management circuit. If it is not necessary to configure the rechargeable battery 80 for the external magnetic control device, the external magnetic control device does not need to be configured with the external circuit board 70 having a charge and discharge management circuit.

[0084] Attached Figures 11 to 17 shows an external magnetic control device according to another preferred embodiment of the present utility model. Different from the external magnetic control device shown in the attached Figures 1 to 10 figure, in the attached Figures 11 to 17In this specific example of the external magnetic control device of the present utility model shown, the housing 10 has a detection hole 107, and the detection hole 107 communicates the housing space 101 with the external environment. Wherein the position detection unit 50 includes a grid disk 53 and a detection element 54. The grid disk 53 has at least one optical path channel 531. The grid disk 53 is mounted on the output shaft 411 of the drive motor 41, and the grid disk 53 extends to the outside of the housing 10 through the detection hole 107 of the housing 10. The detection element 54 is mounted on the external circuit board 70, and the detection element 54 has a transmitting part 541 and a receiving part 542 which are opposite in position. The transmitting part 541 and the receiving part 542 are located on opposite sides of the grid disk 53. When the output shaft 411 of the drive motor 41 rotates to drive the swing arm 20 and the magnetic element 30 to swing through the transmission assembly 44, the sector gear 42 and the connecting rod 43, the output shaft 411 of the drive motor 41 drives the grid disk 53 to rotate. In this process, the transmitting part 541 always emits light. When the output shaft 411 of the drive motor 41 drives the grid disk 53 to rotate to a position where the optical path channel 531 of the grid disk 53 is in the space between the transmitting part 541 and the receiving part 542, the receiving part 542 can receive the light emitted by the transmitting part 541. When the output shaft 411 of the drive motor 41 drives the grid disk 53 to rotate to a position where the optical path channel 531 of the grid disk 53 deviates from the space between the transmitting part 541 and the receiving part 542, the light emitted by the transmitting part 541 is blocked by the grid disk 53 and is not received by the receiving part 542. In this way, the detection element 54 can generate a pulse signal, and based on the pulse signal, the positions of the swing arm 20 and the magnetic element 30 can be detected.

[0085] Reference attached Figure 13 , the bottom shell 11 has a wire threading channel 116, and the wire threading channel 116 communicates the housing space 101 of the housing 10 with the external environment. Wherein the wire connected to the drive motor 41 can extend to the outside of the housing 10 through the wire threading channel 116 of the bottom shell 11 and be connected to the external circuit board 70.

[0086] Continue to refer to attached Figure 11 , Figure 13 and Figure 14, the external circuit board 70 is received in the groove 116 of the bottom case 11, so that the external circuit board 70 can be prevented from protruding from the outer surface of the bottom case 11. In this way, during the process of allowing and loading the external magneto-control device, it is beneficial to prevent the external circuit board 70 from being touched, so as to achieve the purpose of protecting the external circuit board 70.

[0087] In addition, Figures 11 to 17 the specific structure of the transmission assembly 44 of the external magneto-control device shown in the attached Figures 1 to 10 is different from the specific structure of the transmission assembly 44 of the external magneto-control device shown in the attached Figures 11 to 17 In the external magneto-control device shown in the attached

[0088] In the Figures 11 to 17 specific example of the external magneto-control device of the present invention shown in the attached, the output shaft 411 of the drive motor 41 extends to the grease chamber 104 through the first opening 105 of the housing 10, and the end of the connecting rod 43 for connecting the sector gear 42 extends to the grease chamber 104 through the second opening 106 of the housing 10. In this way, the first worm 4411, the second worm 4412, each transmission gear 442 and the sector gear 42 are respectively rotatably held in the grease chamber 104 of the housing 10, and the grease can fully lubricate the first worm 4411, the second worm 4412, each transmission gear 442 and the sector gear 42.

[0089] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and without departing from the said principles, any variations or modifications can be made to the embodiments of the present invention.

Claims

1. External magnetic control device, characterized in that, Comprising: An oscillating arm; At least one magnetic element, wherein the magnetic element is disposed on one side of the oscillating arm; A housing, wherein the housing has a housing space and a bottom opening, and the bottom opening communicates the housing space with the external environment; A driving unit, wherein the driving unit includes a driving motor, the driving motor is fixedly installed in the housing space of the housing, wherein the pivoting end of the oscillating arm is rotatably installed on the housing, the driven end of the oscillating arm is drivably connected to the driving motor, and the oscillating arm holds the magnetic element at a position facing the bottom opening of the housing; A position detecting unit, wherein the position detecting unit is configured to detect the swinging position of the oscillating arm, and the position detecting unit is associated with the driving motor; And An external circuit board, wherein the external circuit board is fixedly installed outside the housing, and the driving motor and the position detecting unit are respectively connected to the external circuit board.

2. The external magnetic control device according to claim 1, wherein the driving unit further includes a sector gear, a connecting rod and a transmission assembly, the sector gear has an axial side and a wheel side with opposite positions, the sector gear is rotatably installed in the housing space of the housing, opposite ends of the connecting rod are respectively rotatably installed on the axial side of the sector gear and the driven end of the oscillating arm, and the transmission assembly connects the output shaft of the driving motor and the wheel side of the sector gear.

3. The external magnetic control device according to claim 2, wherein the housing has a grease chamber and a first opening and a second opening respectively communicating with the grease chamber, the driving motor closes the first opening of the housing, and the output shaft of the driving motor extends into the grease chamber through the first opening of the housing, wherein the transmission assembly includes a worm and a plurality of transmission gears, the worm is installed on the output shaft of the driving motor and is rotatably held in the grease chamber of the housing, adjacent two of the transmission gears mesh with each other, one of the transmission gears extends into the grease chamber through the second opening of the housing and then meshes with the worm, and the other transmission gear meshes with the wheel side of the sector gear, wherein the grease chamber of the housing is filled with grease.

4. The external magnetic control device according to claim 2, wherein the transmission assembly includes a straight tooth, a worm and a plurality of transmission gears, the straight tooth is installed on the output shaft of the driving motor, the worm is rotatably disposed in the housing space of the housing, and the worm meshes with the straight tooth, adjacent two of the transmission gears mesh with each other, one of the transmission gears meshes with the worm, and the other transmission gear meshes with the wheel side of the sector gear.

5. The external magnetic control device according to claim 4, wherein the housing has a grease chamber and a first opening and a second opening respectively communicating with the grease chamber. The output shaft of the driving motor extends into the grease chamber through the first opening of the housing, and the end of the connecting rod for connecting the sector gear extends into the grease chamber through the second opening of the housing. The straight gear, the worm, each of the transmission gears, and the sector gear are respectively rotatably held in the grease chamber of the housing.

6. The external magnetic control device according to any one of claims 2 to 5, wherein the position detection unit is a potentiometer, which includes a fixed part and a rotating part rotatably mounted on the fixed part. The fixed part is fixedly mounted on the housing, and the rotating part is drivingly connected to the sector gear.

7. The external magnetic control device according to claim 6, wherein the housing has a shaft hole that communicates the housing space and the external environment. The rotating part of the potentiometer has an assembly hole, and the fixed part of the potentiometer is fixedly mounted on the outside of the housing. The position of the assembly hole of the rotating part corresponds to the position of the shaft hole of the housing. The assembly shaft of the sector gear is mounted in the assembly hole of the rotating part after passing through the shaft hole of the housing, so as to allow the rotating part to be drivingly connected to the sector gear.

8. The external magnetic control device according to any one of claims 1 to 5, wherein the housing has a detection hole that communicates the housing space and the external environment. The position detection unit includes a grid disk and a detection element. The grid disk is mounted on the driving motor and has at least one light path channel. The grid disk extends to the outside of the housing through the detection hole of the housing. The detection element is mounted on the external circuit board and has a transmitting part and a receiving part with opposite positions. The receiving part is used to receive the light emitted by the transmitting part. The transmitting part and the receiving part of the detection element are located on opposite sides of the grid disk, so as to allow the light emitted by the transmitting part to reach the receiving part through the light path channel of the grid disk.

9. The external magnetic control device according to any one of claims 1 to 5, wherein the external magnetic control device includes an internal circuit board, which is fixedly arranged in the housing space of the housing. The driving motor and the position detection unit are respectively connected to the internal circuit board, and the internal circuit board and the external circuit board are connected.

10. The external magnetic control device according to claim 9, wherein the housing has a side opening that communicates the housing space and the external environment. The internal circuit board has a first conducting part, and the position of the first conducting part corresponds to the position of the side opening of the housing. The external circuit board has a second conducting part, and the second conducting part of the external circuit board is inserted into the first conducting part of the internal circuit board.

11. External magnetic control device, characterized in that, Comprising: An oscillating arm; At least one magnetic element, wherein the magnetic element is disposed on one side of the oscillating arm; A housing, wherein the housing has a housing space, a bottom opening and a side opening, and the bottom opening and the side opening communicate with the housing space and the external environment respectively; A driving unit, wherein the driving unit includes a driving motor, the driving motor is fixedly installed in the housing space of the housing, wherein the pivoting end of the oscillating arm is rotatably installed on the housing, the driven end of the oscillating arm is drivably connected to the driving motor, and the oscillating arm holds the magnetic element at a position facing the bottom opening of the housing; A position detection unit, wherein the position detection unit is used to detect the swinging position of the oscillating arm, and the position detection unit is associated with the driving motor; And An internal circuit board, wherein the internal circuit board has a first conducting member, the internal circuit board is fixedly disposed in the housing space of the housing, and the position of the first conducting member of the internal circuit board corresponds to the position of the side opening of the housing.

12. The external magnetic control device according to claim 11, wherein the driving unit further includes a sector gear, a connecting rod and a transmission assembly, the sector gear has an axial side and a wheel side with opposite positions, the sector gear is rotatably installed in the housing space of the housing, opposite ends of the connecting rod are respectively rotatably installed on the axial side of the sector gear and the driven end of the oscillating arm, and the transmission assembly connects the output shaft of the driving motor and the wheel side of the sector gear.

13. The external magnetic control device according to claim 12, wherein the housing has a grease chamber and a first opening and a second opening respectively communicating with the grease chamber, the driving motor closes the first opening of the housing, the output shaft of the driving motor extends to the grease chamber through the first opening of the housing, wherein the transmission assembly includes a worm and a plurality of transmission gears, the worm is installed on the output shaft of the driving motor and is rotatably held in the grease chamber of the housing, adjacent two of the transmission gears mesh with each other, one of the transmission gears extends to the grease chamber through the second opening of the housing and then meshes with the worm, and the other transmission gear meshes with the wheel side of the sector gear, wherein the grease chamber of the housing is filled with grease.

14. The external magnetic control device according to claim 12, wherein the transmission assembly includes a straight tooth, a worm and a plurality of transmission gears, the straight tooth is installed on the output shaft of the driving motor, the worm is rotatably disposed in the housing space of the housing, and the worm meshes with the straight tooth, adjacent two of the transmission gears mesh with each other, one of the transmission gears meshes with the worm, and the other transmission gear meshes with the wheel side of the sector gear.

15. The external magnetic control device according to claim 14, wherein the housing has a grease chamber and a first opening and a second opening respectively communicating with the grease chamber. The output shaft of the drive motor extends into the grease chamber through the first opening of the housing, and the end of the connecting rod for connecting the sector gear extends into the grease chamber through the second opening of the housing. The straight teeth, the worm, each of the transmission gears, and the sector gear are respectively rotatably held in the grease chamber of the housing.

16. The external magnetic control device according to any one of claims 12 to 15, wherein the position detection unit is a potentiometer, which includes a fixed part and a rotating part rotatably mounted on the fixed part. The fixed part is fixedly mounted on the housing, and the rotating part is drivingly connected to the sector gear.

17. The external magnetic control device according to claim 16, wherein the housing has a shaft hole, the shaft hole communicating the housing space and the external environment. The rotating part of the potentiometer has an assembly hole, the fixed part of the potentiometer is fixedly mounted on the outside of the housing, and the position of the assembly hole of the rotating part corresponds to the position of the shaft hole of the housing. Wherein the assembly shaft of the sector gear is mounted in the assembly hole of the rotating part after passing through the shaft hole of the housing to allow the rotating part to be drivingly connected to the sector gear.

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