Energy-saving permanent magnet brushless direct current motor

Abstract

The utility model discloses an energy-saving permanent magnet brushless direct current motor, which relates to the technical field of brushless direct current motors and comprises a motor, an output shaft is arranged on one side of the motor, and an output tail shaft is arranged on one side, far away from the output shaft, of the motor. The device further comprises an energy storage mechanism used for absorbing kinetic energy of the motor and a first pushing assembly used for pushing the energy storage mechanism to move, the first pushing assembly is arranged on the side, close to the output tail shaft, of the motor, the energy storage mechanism comprises a shell connected with the first pushing assembly in a matched mode, and a transmission shaft is rotationally connected into the shell. A connecting ring is coaxially and fixedly connected to the transmission shaft, an energy storage assembly is arranged between the connecting ring and the shell in a matched mode, a butt joint groove is formed in the end, close to the transmission shaft, of the output tail shaft, and butt joint teeth matched with the butt joint groove are fixedly connected to the end, close to the butt joint groove, of the transmission shaft. According to the utility model, the kinetic energy can be stored during shutdown, and the kinetic energy can be released during starting, so that the waste of the kinetic energy is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless DC motors, in particular to an energy-saving permanent magnet brushless DC motor. Background Art

[0002] A brushless DC motor is a specialized motor that combines the high efficiency of a DC motor with the control flexibility of an AC motor. A permanent magnet brushless DC motor is a specialized brushless DC motor that utilizes permanent magnets as the magnetic field source, eliminating the need for traditional brushes and a commutator. This motor combines the high magnetic properties of permanent magnets with the electronic control advantages of a brushless DC motor, resulting in high efficiency, low noise, and a long lifespan. It is widely used in a variety of applications requiring precise control and high performance.

[0003] When performing mixing, transportation, and industrial cleaning, a permanent magnet brushless DC motor is often required to rotate forward for a period of time, then stop rotating, and then reverse for a period of time, and cycle the above forward and reverse states to repeatedly achieve a certain effect. When the permanent magnet brushless DC motor is shut down, the power supply device stops inputting the drive signal to the motor. After losing the drive current, the motor will continue to rotate due to inertia. At the same time, the load and friction will cause it to gradually decelerate to zero speed, thereby realizing the motor shutdown operation. When the permanent magnet brushless DC motor is turned on, the power supply device is controlled to continue inputting the drive signal to the motor. After obtaining the drive current, the motor stator generates a magnetic field to drive the rotor to rotate, thereby realizing power conversion.

[0004] The shortcomings of the existing technical solutions are that when the motor accelerates from a stationary state to the rated speed, it needs to overcome the inertia of the rotor and the load, and a large amount of energy is consumed to generate kinetic energy. When the motor stops, due to the inertia of the rotor and the load, kinetic energy still exists on the motor output shaft. This kinetic energy is not reasonably utilized, resulting in energy waste. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving permanent magnet brushless DC motor to solve the technical problem in the prior art that when the motor stops, due to the inertia of the rotor and the load, kinetic energy still exists on the motor output shaft, and this kinetic energy is not reasonably utilized, resulting in energy waste.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0007] An energy-saving permanent magnet brushless DC motor comprises a motor, an output shaft is provided on one side of the motor, and an output tail shaft is provided on the side of the motor away from the output shaft. The device also comprises an energy storage mechanism for absorbing the kinetic energy of the motor and a first pushing assembly for pushing the energy storage mechanism to move, the first pushing assembly is arranged on the side of the motor close to the output tail shaft, the energy storage mechanism comprises a shell that is cooperated with the first pushing assembly, a transmission shaft is rotatably connected inside the shell, a connecting ring is coaxially fixedly connected to the transmission shaft, an energy storage assembly is cooperated with the connecting ring and the shell, a docking groove is provided on one end of the output tail shaft close to the transmission shaft, and a docking tooth that cooperates with the docking groove is fixedly connected to the end of the transmission shaft close to the docking groove, a second pushing assembly is provided on the first pushing assembly, and an orientation mechanism for limiting the rotation direction of the transmission shaft is provided on the second pushing assembly, and the second pushing assembly cooperates with the orientation mechanism.

[0008] As a further solution of the present invention: a cylindrical groove is provided at one end of the transmission shaft near the orienting mechanism, and a plurality of groups of equidistantly surrounding latches are fixedly connected inside the cylindrical groove. The orienting mechanism includes a locking wheel connected to the second pushing assembly, and a plurality of groups of latches are equidistantly arranged on the side of the locking wheel and matched with the corresponding latches. One end of each group of the latches is movably hinged to the locking wheel, and the angle between the extension direction of each group of the latches and the edge section of the locking wheel at the location is less than °, and silicone is provided between the latch and the locking wheel.

[0009] As a further solution of the present invention: the energy storage assembly includes an energy storage spring, one end of the energy storage spring is fixedly connected to the connecting ring, and the other end is fixedly connected to the housing, and the energy storage spring is wrapped around the transmission shaft.

[0010] As a further solution of the present invention: the first pushing assembly includes a first electric telescopic rod fixedly connected to the motor, the telescopic end of the first electric telescopic rod is fixedly connected to the first connecting rod, and the shell is fixedly connected to the first connecting rod.

[0011] As a further solution of the present invention: the second sliding assembly includes a second electric telescopic rod fixedly connected to the first connecting rod, the telescopic end of the second electric telescopic rod is fixedly connected to the second connecting rod, and the locking wheel is fixedly connected to the second connecting rod.

[0012] As a further solution of the present invention: a guide rod is fixedly connected to the side of the motor close to the energy storage mechanism and is slidably matched with the first connecting rod and the second connecting rod.

[0013] Beneficial effects of the utility model:

[0014] When the camshaft is in the forward direction and the gears are engaged, the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and the gears are engaged, and

[0015] 2. When the utility model needs to start the motor again and drive the output tail shaft to rotate in the opposite direction, the locking wheel can be first moved away from the cylindrical groove, thereby releasing the locking relationship between the latching teeth and the latching plate, so that the energy storage spring can drive the transmission shaft to rotate in the opposite direction. The reverse rotation of the transmission shaft will drive the output tail shaft and the motor rotor to rotate in the opposite direction, thereby practicing the release of kinetic energy. At this time, the first electric telescopic rod quickly drives the transmission shaft to separate from the output tail shaft, and at the same time energizes the motor, so that the motor continues to drive the rotor to rotate, thereby reducing the energy consumption when the motor starts and realizing the release of kinetic energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the motor and its related components of the utility model;

[0019] Figure 3 This is a schematic diagram of the longitudinal section structure of the energy storage mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the main structure of the energy storage mechanism of the utility model;

[0021] Figure 5 It is a structural diagram of the orientation mechanism of the utility model.

[0022] In the figure: 1. Motor; 2. Output tail shaft; 3. First electric telescopic rod; 4. First connecting rod; 5. Guide rod; 6. Second electric telescopic rod; 7. Second connecting rod; 8. Orienting mechanism; 801. Locking wheel; 802. Clamping plate; 803. Silica gel; 9. Energy storage mechanism; 901. Housing; 902. Transmission shaft; 903. Energy storage spring; 904. Connecting ring; 905. Docking teeth; 906. Cylindrical groove; 907. Clamping teeth; 10. Docking groove. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 5 As shown, an energy-saving permanent magnet brushless DC motor includes a motor 1, an output shaft is provided on one side of the motor 1, and an output tail shaft 2 is provided on the side of the motor 1 away from the output shaft. The output shaft and the output tail shaft 2 are both coaxially fixedly connected to the rotor inside the motor 1, so that the kinetic energy generated by the motor 1 can be transmitted outward through the output shaft and the output tail shaft 2. The device also includes an energy storage mechanism 9 for absorbing the kinetic energy of the motor 1 and a first pushing assembly for pushing the energy storage mechanism 9 to move. The first pushing assembly is provided on the side of the motor 1 close to the output tail shaft 2. The first pushing assembly includes a first electric telescopic rod 3 fixedly connected to the motor 1, and the telescopic end of the first electric telescopic rod 3 is fixedly connected to a first connecting rod 4.

[0025] In some specific embodiments, the energy storage mechanism 9 includes a housing 901 that is connected to the first connecting rod 4. The first electric telescopic rod 3 can drive the first connecting rod 4 to move, thereby driving the energy storage mechanism 9 to move. The housing 901 is internally rotatably connected to a transmission shaft 902. A connecting ring 904 is coaxially fixedly connected to the transmission shaft 902. An energy storage spring 903 is provided between the connecting ring 904 and the housing 901. The energy storage spring 903 is used to absorb the kinetic energy transmitted from the transmission shaft 902 and accelerate the stopping speed of the transmission shaft 902 and the output tail shaft 2. The output tail shaft 2 is provided with a docking groove 10 at one end near the transmission shaft 902. The transmission shaft 90 2 is fixedly connected to one end near the docking groove 10 and is matched with the docking groove 10. When the motor 1 is stopped, the first electric telescopic rod 3 drives the energy storage mechanism 9 to approach the output tail shaft 2, so that the docking groove 10 on the output tail shaft 2 is docked with the docking tooth 905 on the transmission shaft 902, thereby facilitating the transfer of kinetic energy from the output tail shaft 2 to the transmission shaft 902. The first pushing assembly is provided with a second pushing assembly, and the second pushing assembly is provided with an orientation mechanism 8 for limiting the rotation direction of the transmission shaft 902. The second pushing assembly cooperates with the orientation mechanism 8 and can drive the orientation mechanism 8 to approach or move away from the transmission shaft 902.

[0026] In some specific embodiments, in order to limit the rotation angle of the transmission shaft 902, the second pushing assembly includes a second electric telescopic rod 6 fixedly connected to the first connecting rod 4, and the telescopic end of the second electric telescopic rod 6 is fixedly connected to the second connecting rod 7. A cylindrical groove 906 is provided at one end of the transmission shaft 902 close to the orienting mechanism 8, and a plurality of groups of equidistantly surrounding latches 907 are fixedly connected inside the cylindrical groove 906. The latches 907 are cylinders with a cross-section similar to a right-angled triangle, and a group of right-angled surfaces of the latches 907 are fixedly connected to the inner wall of the cylindrical groove 906. The orienting mechanism 8 includes a locking wheel 801 fixedly connected to the second connecting rod 7. The second electric telescopic rod 6 can drive the second connecting rod 7 to move, and the second connecting rod 7 can drive the locking wheel 801 to move. A plurality of groups of card plates 802 that cooperate with the corresponding card teeth 907 are equidistantly arranged around the side of the locking wheel 801, and one end of each group of card plates 802 is fixed to the locking wheel 8 01 is hinged, and the angle between the extension direction of each set of card plates 802 and the edge section of the locking wheel 801 at its location is less than 60 degrees, so that when the transmission shaft 902 rotates in the opposite direction relative to the locking wheel 801, the card plates 802 will press against the right-angled edge of the latch teeth 907, thereby preventing the transmission shaft 902 from rotating in the opposite direction, and silicone 803 is provided between the card plates 802 and the locking wheel 801, and the silicone 803 can maintain the relative position of the card plates 802 and the latch teeth 907; when the transmission shaft 902 rotates forward relative to the locking wheel 801, the card plates 802 will sweep over the inclined surface of the latch teeth 907, and the inclined surface of the latch teeth 907 will squeeze the card plates 802, and the card plates 802 will squeeze the silicone 803, so that the transmission shaft 902 can rotate forward, and the silicone 803 can drive the corresponding card plates 802 to reset to maintain the implementation effect of the card plates 802, thereby achieving the limitation of the rotation angle of the transmission shaft 902.

[0027] In some specific embodiments, in order to ensure the stability of the first connecting rod 4 and the second connecting rod 7 during the sliding process, the motor 1 is fixedly connected to the side close to the energy storage mechanism 9 with a guide rod 5 that slides with the first connecting rod 4 and the second connecting rod 7. The guide rod 5 serves to limit the first connecting rod 4 and the second connecting rod 7, thereby ensuring the stability of the orienting mechanism 8 and the energy storage mechanism 9 during the movement.

[0028] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will now be described in conjunction with specific application scenarios:

[0029] When the motor 1 drives the output tail shaft 2 to rotate in the forward direction and the motor 1 needs to be stopped, the power supply of the motor 1 is first cut off. The rotor inside the motor 1 and the external load will continue to rotate under the action of inertia. At this time, the first electric telescopic rod 3 contracts, driving the first connecting rod 4 to approach the output tail shaft 2, thereby driving the housing 901 and the transmission shaft 902 to approach the output tail shaft 2, so that the docking teeth 905 on the transmission shaft 902 are docked with the docking grooves 10 on the output tail shaft 2, so that the output tail shaft 2 can transfer kinetic energy to the transmission shaft 902. The rotation of the transmission shaft 902 will act on the energy storage spring 903 through the connecting ring 904, so that the energy storage spring 903 close to the connecting ring 904 One end begins to rotate with the transmission shaft 902, and the kinetic energy on the transmission shaft 902 is absorbed by the energy storage spring 903, thereby accelerating the stopping speed of the transmission shaft 902 and the output tail shaft 2. At this time, the cylindrical groove 906 on the transmission shaft 902 is relatively When the locking wheel 801 rotates and the transmission shaft 902 rotates forwardly relative to the locking wheel 801, the card plate 802 will sweep the inclined surface of the latch tooth 907, and the inclined surface of the latch tooth 907 will squeeze the card plate 802, causing the card plate 802 to squeeze the silicone rubber 803, thereby facilitating the transmission shaft 902 to rotate forwardly along the locking wheel 801. When the kinetic energy of the motor 1 is exhausted, the energy storage spring 903 will drive the output tail shaft 2 and the transmission shaft 902 to rotate in the opposite direction. When the transmission shaft 902 rotates in the opposite direction relative to the locking wheel 801, the card plate 802 will press against the right-angled edge of the latch tooth 907, thereby preventing the transmission shaft 902 from rotating in the opposite direction, thereby preventing the energy stored in the energy storage spring 903 from being released. Silica gel 803 is provided between the card plate 802 and the locking wheel 801. The silicone rubber 803 can maintain the relative position of the card plate 802 and the latch tooth 907, thereby ensuring that the card plate 802 can always cooperate with the latch tooth 907;

[0030] When it is necessary to start the motor 1 again and drive the output tail shaft 2 to rotate in the opposite direction, the second electric telescopic rod 6 can be extended first to drive the locking wheel 801 away from the cylindrical groove 906, thereby releasing the locking relationship between the latch tooth 907 and the card plate 802, so that the energy storage spring 903 can drive the transmission shaft 902 to rotate in the opposite direction. The reverse rotation of the transmission shaft 902 will drive the output tail shaft 2 and the rotor of the motor 1 to rotate in the opposite direction, thereby practicing the release of kinetic energy. At this time, the first electric telescopic rod 3 quickly drives the transmission shaft 902 to separate from the output tail shaft 2, and at the same time energizes the motor 1, so that the motor 1 continues to drive the rotor to rotate, thereby reducing the energy consumption when the motor 1 starts. When the transmission shaft 902 is separated from the output tail shaft 2, the energy storage spring 903 will automatically adjust the state of the transmission shaft 902, so that it is convenient for the second electric telescopic rod 6 to drive the locking wheel 801 to be reinserted into the cylindrical groove 906.

[0031] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. An energy-saving permanent magnet brushless DC motor, comprising a motor (1), wherein an output shaft is provided on one side of the motor (1), and an output tail shaft (2) is provided on the side of the motor (1) away from the output shaft, characterized in that , also includes: An energy storage mechanism (9) for absorbing kinetic energy of a motor (1) and a first push assembly for pushing the energy storage mechanism (9) to move, wherein the first push assembly is arranged on a side of the motor (1) close to an output tail shaft (2), the energy storage mechanism (9) comprises a housing (901) that is cooperatively connected to the first push assembly, a transmission shaft (902) being rotatably connected inside the housing (901), a connecting ring (904) being coaxially fixedly connected to the transmission shaft (902), and the connecting ring (904) being connected to the housing (901). 1) are provided with an energy storage assembly, an end of the output tail shaft (2) close to the transmission shaft (902) is provided with a docking groove (10), an end of the transmission shaft (902) close to the docking groove (10) is fixedly connected with a docking tooth (905) that matches the docking groove (10), a second pushing assembly is provided on the first pushing assembly, and a directional mechanism (8) for limiting the rotation direction of the transmission shaft (902) is provided on the second pushing assembly, and the second pushing assembly matches the directional mechanism (8).

2. The energy-saving permanent magnet brushless DC motor according to claim 1, characterized in that: The transmission shaft (902) is provided with a cylindrical groove (906) at one end close to the orientation mechanism (8), and a plurality of groups of equally spaced latch teeth (907) are fixedly connected inside the cylindrical groove (906). The orientation mechanism (8) includes a locking wheel (801) connected to the second push assembly, and a plurality of groups of latch plates (802) are equally spaced around the side of the locking wheel (801) and matched with the corresponding latch teeth (907). One end of each group of the latch plates (802) is movably hinged to the locking wheel (801), and an angle between the extending direction of each group of the latch plates (802) and the edge section of the locking wheel (801) at the location is less than 60 degrees. Silica gel (803) is provided between the latch plates (802) and the locking wheel (801).

3. The energy-saving permanent magnet brushless DC motor according to claim 1, characterized in that: The energy storage assembly comprises an energy storage spring (903), one end of the energy storage spring (903) is fixedly connected to the connecting ring (904), and the other end is fixedly connected to the housing (901), and the energy storage spring (903) is sheathed around the transmission shaft (902).

4. The energy-saving permanent magnet brushless DC motor according to claim 2, characterized in that: The first pushing assembly comprises a first electric telescopic rod (3) fixedly connected to the motor (1); the telescopic end of the first electric telescopic rod (3) is fixedly connected to a first connecting rod (4); and the housing (901) is fixedly connected to the first connecting rod (4).

5. The energy-saving permanent magnet brushless DC motor according to claim 4, characterized in that: The second pushing assembly comprises a second electric telescopic rod (6) fixedly connected to the first connecting rod (4); the telescopic end of the second electric telescopic rod (6) is fixedly connected to the second connecting rod (7); and the locking wheel (801) is fixedly connected to the second connecting rod (7).

6. The energy-saving permanent magnet brushless DC motor according to claim 5, characterized in that: A guide rod (5) is fixedly connected to the motor (1) on one side close to the energy storage mechanism (9) and is in sliding engagement with both the first connecting rod (4) and the second connecting rod (7).

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