A claw-pole permanent magnet motor

Abstract

The present invention discloses a claw-pole permanent magnet motor, which relates to the technical field of motors. The claw-pole permanent magnet motor comprises: a housing, a coil support contained in the housing, and an electrical terminal matched with the coil support; the coil support is provided with a mounting frame, the mounting frame is provided with an electrical mounting groove, a base boss is provided in the electrical mounting groove, a preset spacing is provided between the base boss and the inner wall of the electrical mounting groove, and the electrical mounting groove forms a U-shaped matching groove based on the preset spacing; the electrical terminal is provided with a U-shaped bending structure, and the electrical terminal is embedded in the U-shaped matching groove from top to bottom based on the U-shaped bending structure; the movement direction of the electrical terminal in the electrical mounting groove is perpendicular to the electrical plug-in direction of the electrical terminal. By providing a U-shaped matching groove on the coil support and matching the U-shaped bending mechanism of the electrical terminal, the pulling force of the connection state between the electrical terminal and the coil support is improved, thereby improving the electrical connection stability and installation reliability of the claw-pole permanent magnet motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a claw-pole permanent magnet motor. Background Art

[0002] The current claw-pole permanent magnet motor is mainly connected to the frame of the coil support through direct plug-in of the electrical terminal and the coil support, and the electrical connection between the internal coil of the claw-pole permanent magnet motor and the external power supply device is realized based on the electrical terminal.

[0003] The matching structure of the electrical terminal and the coil bracket is achieved by plugging in. This connection method cannot guarantee the pulling force between the electrical terminal and the coil bracket. During the plug-in connection between the claw-pole permanent magnet motor and the external power supply, the pulling force is easily too large, causing the electrical terminal and the coil bracket to fall off, affecting the electrical connection stability and installation reliability of the claw-pole permanent magnet motor. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art. The present invention provides a claw-pole permanent magnet motor. By arranging a U-shaped matching groove on the coil bracket and cooperating with the U-shaped bending mechanism of the electrical terminal, the pulling force of the connection state between the electrical terminal and the coil bracket is improved, thereby improving the electrical connection stability and installation reliability of the claw-pole permanent magnet motor.

[0005] The present invention provides a claw-pole permanent magnet motor, which comprises: a housing, a coil support contained in the housing, and an electrical terminal matched with the coil support;

[0006] The coil support is provided with a mounting frame, the mounting frame is provided with an electrical mounting groove, a base boss is provided in the electrical mounting groove, a preset distance is provided between the base boss and the inner wall of the electrical mounting groove, and the electrical mounting groove forms a U-shaped matching groove based on the preset distance;

[0007] The electrical terminal is configured as a U-shaped bending structure, and the electrical terminal is embedded in the U-shaped matching groove from top to bottom based on the U-shaped bending structure;

[0008] A movement direction of the electrical terminal in the electrical installation slot and an electrical plugging direction of the electrical terminal are perpendicular to each other.

[0009] Furthermore, the electrical terminal is formed with a lead connection end and a coil connection end based on the U-shaped bending structure, and the electrical terminal is embedded in the U-shaped matching groove;

[0010] The lead connection end extends outside the U-shaped matching slot along the radial direction of the claw-pole permanent magnet motor, and the coil connection end extends outside the U-shaped matching slot along the radial direction of the claw-pole permanent magnet motor;

[0011] The length of the portion of the lead wire connection end extending outward is greater than the length of the portion of the coil connection end extending outward, so that the lead wire connection end and the coil connection end are staggered.

[0012] Furthermore, a limiting groove is provided on the inner wall of the electrical installation groove, the groove direction of the limiting groove is along the vertical direction, and the electrical terminal is embedded in the U-shaped matching groove from top to bottom along the limiting groove.

[0013] Furthermore, the portion of the coil connection end extending outside the electrical installation slot is folded upward, and the electrical connection position of the coil connection end and the electrical connection position of the lead connection end are on different horizontal planes.

[0014] Furthermore, the claw-pole permanent magnet motor also includes a connecting end cover and a connecting wire, wherein the connecting end cover covers the mounting frame, the connecting end cover is provided with a through hole, one end of the connecting wire extends into the connecting end cover based on the through hole, and one end of the connecting wire is electrically connected to the lead connection end.

[0015] Furthermore, the lead connection end of the electrical terminal is provided with an electrical plug hole, and one end of the connecting wire plugged into the connection end cover is provided with an electrical plug terminal;

[0016] The connecting wire is plugged into the electrical plug hole of the lead wire connecting end based on the electrical plug end.

[0017] Furthermore, the through hole provided in the connection end cover is staggered with the lead connection end of the electrical terminal, and one end of the connection wire extending in the connection end cover is folded and matched with the electrical plug hole of the lead connection end.

[0018] Furthermore, the base boss in the electrical installation slot extends outwardly to form a support shaft;

[0019] When the connecting wire is plugged into the electrical plug hole of the lead connection end, the support shaft is located below the bent portion of the connecting wire, and the support shaft is connected to the connecting wire.

[0020] Furthermore, the middle portion of the coil bracket is set as a hollow accommodating space, the inner bottom surface of the shell is folded upward to form a plurality of first claw pole pieces, and the plurality of first claw pole pieces are arranged along the circumferential direction. The coil bracket is assembled in the shell, and the plurality of first claw pole pieces are located in the accommodating space of the coil bracket, and any of the first claw pole pieces is attached to the inner wall of the accommodating space of the coil bracket.

[0021] Furthermore, the claw-pole permanent magnet motor further comprises a first pole plate, a mating opening is provided in the middle of the first pole plate, the mating opening of the first pole plate is folded downward to form a plurality of second claw pole pieces, and the plurality of second claw pole pieces are arranged along the circumferential direction;

[0022] When the first pole plate covers the coil support, a plurality of the second claw pole pieces are staggeredly matched with a plurality of the first claw pole pieces to form a meshing state.

[0023] The present invention provides a claw-pole permanent magnet motor, in which a base boss is provided at the mounting frame position of a coil bracket, so that the electrical mounting groove of the coil bracket is set as a U-shaped matching groove, and the U-shaped bending mechanism of the electrical terminal is matched, so that the electrical terminal is embedded in the U-shaped matching groove from top to bottom, so that the assembly movement direction of the electrical terminal in the coil bracket is perpendicular to the plug-in connection direction of the electrical terminal and the external power supply. Based on the cooperation between the base boss and the electrical terminal, the pulling force of the connection state between the electrical terminal and the coil bracket can be improved, thereby improving the electrical connection stability and installation reliability of the claw-pole permanent magnet motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a claw-pole permanent magnet motor according to an embodiment of the present invention;

[0025] Figure 2 is a structural exploded diagram of a claw-pole permanent magnet motor according to an embodiment of the present invention;

[0026] Figure 3 2 is a schematic diagram of the coil support structure in an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the assembly structure of the coil support and the electrical terminal in an embodiment of the present invention;

[0028] Figure 5 is a schematic structural diagram of an electrical terminal in an embodiment of the present invention;

[0029] Figure 6 is a schematic structural diagram of a connecting wire in an embodiment of the present invention;

[0030] Figure 7 is a schematic structural diagram of a housing in an embodiment of the present invention;

[0031] Figure 8 is a schematic structural diagram of a first electrode plate in an embodiment of the present invention;

[0032] Fig. 9 Schematic diagram of the coordination state of the first claw pole piece and the second claw pole piece in an embodiment of the present invention;

[0033] Fig.10 is a schematic diagram of the structure of a gear reduction group in an embodiment of the present invention;

[0034] Fig.11 is a schematic structural diagram of a motor end cover in an embodiment of the present invention;

[0035] Fig.12 It is a schematic diagram of the structure of the motor working shaft in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0037] Figure 1 The structure diagram of the claw-pole permanent magnet motor in the embodiment of the present invention is shown. Figure 2 The structure explosion diagram of the claw-pole permanent magnet motor in the embodiment of the present invention is shown, and the claw-pole permanent magnet motor comprises: a housing 1, a coil support 2 accommodated in the housing 1, and an electrical terminal 3 matched with the coil support 2;

[0038] The coil bracket 2 is provided with a mounting frame 21, and the mounting frame 21 is provided with a plurality of grooves, and electrical mounting grooves are provided in the plurality of grooves. A base boss 23 is provided in the electrical mounting groove, and a preset spacing is provided between the base boss 23 and the inner wall of the electrical mounting groove. The electrical mounting groove forms a U-shaped matching groove based on the preset spacing, and the electrical terminal 3 is provided with a U-shaped bending structure. The electrical terminal 3 is embedded in the U-shaped matching groove based on the U-shaped bending structure, and the matching stability and assembly convenience between the electrical terminal 3 and the U-shaped matching groove are improved based on the U-shaped bending structure.

[0039] Figure 3 A schematic diagram of the coil support structure in an embodiment of the present invention is shown; Figure 4 A schematic diagram of the assembly structure of the coil support and the electrical terminal in an embodiment of the present invention is shown; the movement direction of the electrical terminal 3 in the electrical mounting groove is perpendicular to the electrical plug-in direction of the electrical terminal 3, that is, the installation movement direction of the electrical terminal 3 is perpendicular to the working plug-in movement direction of the electrical terminal 3, so that when the electrical terminal 3 is plugged into the mounting frame 21 of the coil support 2, the mounting frame 21 can provide sufficient pulling force for the electrical terminal 3, thereby improving the stability and reliability of the assembly of the electrical terminal 3 and the coil support 2.

[0040] Furthermore, based on the cooperation between the electrical terminal 3 and the base boss 23 , the base boss 23 can provide a supporting force for the electrical terminal 3 , thereby improving the pulling force of the electrical terminal 3 after being assembled on the coil support 2 .

[0041] Specifically, the inner wall of the electrical installation slot is provided with a limiting slot 211, the slotting direction of the limiting slot 211 is along the vertical direction, and the electrical terminal 3 is embedded in the U-shaped matching slot from top to bottom along the limiting slot 211. The outer side wall of the electrical terminal 3 is provided with a positioning block 33, the size of the positioning block 33 is adapted to the size of the limiting slot 211, and based on the cooperation between the positioning block 33 and the limiting slot 211, the accuracy of the matching position of the electrical terminal 3 and the electrical installation slot can be ensured.

[0042] Furthermore, the central axis of the positioning block 33 is located on the right side of the central axis of the rear side wall of the electrical terminal 3, that is, the positioning block 33 is located on the right side of the rear side wall of the electrical terminal 3, so that the positioning block 33 can limit the relative matching position between the electrical terminal 3 and the coil bracket 2, ensuring that the electrical terminal 3 can be accurately assembled with the coil bracket 2, and ensuring the accuracy of the posture state of the electrical terminal 3 when the electrical terminal 3 is matched with the mounting frame 21, thereby ensuring that the two electrical terminals 3 can form a mirror-symmetrical distribution state when matched with the mounting frame 21, thereby meeting the working requirements of the claw-pole permanent magnet motor.

[0043] Furthermore, by setting the positioning block 33 of the electrical terminal 3 at a right-biased position, when the electrical terminal 3 is assembled at the corresponding position, the accuracy of the assembly posture of the electrical terminal 3 can be ensured, avoiding the situation of inverted assembly posture, thereby improving the accuracy of assembly of the electrical terminal 3.

[0044] Furthermore, an inclined section is provided at the upper notch of the limiting groove 211, and based on the inclined section, the upper notch of the limiting groove 211 forms a trumpet-shaped opening structure, so that the positioning block 33 of the electrical terminal 3 enters the limiting groove 211, thereby satisfying the assembly cooperation between the electrical terminal 3 and the mounting frame 21.

[0045] Specifically, Figure 5 A schematic diagram of the structure of an electrical terminal in an embodiment of the present invention is shown; Figure 6A structural schematic diagram of a connecting wire in an embodiment of the present invention is shown, wherein the electrical terminal 3 is formed with a lead connection end 31 and a coil connection end 32 based on the U-shaped bending structure, and the electrical terminal 3 is embedded in the U-shaped matching groove, and the lead connection end 31 extends outside the U-shaped matching groove along the radial direction of the claw-pole permanent magnet motor, and the coil connection end 32 extends outside the U-shaped matching groove along the radial direction of the claw-pole permanent magnet motor, and the length of the portion of the lead connection end 31 extending outside is greater than the length of the portion of the coil connection end 32 extending outside, so that a staggered distribution can be formed between the lead connection end 31 and the coil connection end 32, so that the lead connection end 31 is connected to the wire and the coil connection end 32 is electrically connected to the coil enameled wire.

[0046] Furthermore, the portion of the coil connection end 32 extending outside the electrical mounting groove is folded upward, and the electrical connection position of the coil connection end 32 and the electrical connection position of the lead connection end 31 are on different horizontal planes. Based on the folded structure of the coil connection end 32, the coil connection end 32 and the lead connection end 31 are on different horizontal planes, which can effectively reduce the risk of short circuit between the coil enameled wire of the coil connection end 32 and the wire of the lead connection end 31, thereby ensuring the safety of the internal electrical connection of the claw-pole permanent magnet motor.

[0047] Specifically, the claw-pole permanent magnet motor also includes a connecting end cover 22 and a connecting wire 4, wherein the connecting end cover 22 covers the mounting frame 21, and the connecting end cover 22 is provided with a through hole, one end of the connecting wire 4 extends into the connecting end cover 22 based on the through hole, and one end of the connecting wire 4 is electrically connected to the lead connection end 31.

[0048] Furthermore, two electrical mounting grooves are provided on the mounting frame 21, and two electrical terminals 3 are matched in the two electrical mounting grooves one by one, and the two electrical terminals 3 form the positive terminal and the negative terminal of the claw-pole permanent magnet motor. By opening two through holes on the connecting end cover 22, the claw-pole permanent magnet motor can extend two connecting wires 4 outward to meet the use requirements of the claw-pole permanent magnet motor being electrically connected to an external working circuit.

[0049] Specifically, the lead connection end 31 of the electrical terminal 3 is provided with an electrical plug-in hole 311, and the end of the connecting wire 4 inserted into the connection end cover 22 is provided with an electrical plug-in end 41, so that the connecting wire 4 can be inserted into the electrical plug-in hole 311 of the lead connection end 31 based on the electrical plug-in end 41, thereby realizing the electrical connection between the connecting wire 4 and the electrical terminal 3.

[0050] Furthermore, the through hole formed in the connection end cover 22 is offset from the lead connection end 31 of the electrical terminal 3, so that one end of the connection wire 4 extending inside the connection end cover 22 can be folded and matched with the electrical plug hole 311 of the lead connection end 31, thereby improving the stability of the matching between the connection wire 4 and the electrical terminal 3.

[0051] Furthermore, based on the connection wire 4 being folded and plugged into the lead connection end 31 of the electrical terminal 3, the pulling performance of the electrical connection between the connection wire 4 and the claw-pole permanent magnet motor can be improved, and the stability of the electrical connection can be maintained during the installation and use of the claw-pole permanent magnet motor, thereby improving the reliability of the claw-pole permanent magnet motor.

[0052] Specifically, the base boss 23 in the electrical mounting groove extends outwardly with a support shaft 231. When the connecting wire 4 is plugged into the electrical plug hole 311 of the lead connection end 31, the support shaft 231 can be located below the bent portion of the connecting wire 4, and the support shaft 231 is connected to the connecting wire 4. The support shaft 231 supports the bent portion of the connecting wire 4. The support shaft 231 can limit the placement position of the connecting wire 4 in the connecting end cover 22 and provide sufficient supporting force for the connecting wire 4, thereby improving the structural connection stability and reliability between the connecting wire 4 and the electrical terminal 3.

[0053] Furthermore, the connecting wire 4 is plugged into and fitted in the through hole of the connecting end cover 22 , and the connecting wire 4 can be welded and connected to the through hole of the connecting end cover 22 through a soldering process, thereby improving the matching connection stability between the connecting wire 4 and the connecting end cover 22 .

[0054] Specifically, Figure 7 A schematic diagram of the structure of a housing in an embodiment of the present invention is shown; Figure 8 A schematic diagram of the structure of the first electrode plate in an embodiment of the present invention is shown; Fig. 9 A schematic diagram showing the coordination state of the first claw pole piece and the second claw pole piece in an embodiment of the present invention is shown; Figures 1 to 9 The claw-pole permanent magnet motor also includes a first pole plate 5 and a rotor assembly 6. The coil support 2 is an I-shaped cylindrical structure. The enameled wire is wound around the outer wall of the cylindrical structure to form a coil on the outer wall of the coil support 2. When the claw-pole permanent magnet motor is working, an external power supply device provides current to the coil, thereby generating a working magnetic field based on the coil on the coil support 2.

[0055] The middle part of the cylindrical structure is set as a hollow accommodating space, and the inner bottom surface of the shell 1 is folded upward to form a plurality of first claw pole pieces 11, and the plurality of first claw pole pieces 11 are arranged along the circumferential direction. The coil bracket 2 is assembled in the shell 1, and the plurality of first claw pole pieces 11 are located in the accommodating space of the coil bracket 2, and any first claw pole piece 11 is attached to the inner wall of the accommodating space of the coil bracket 2.

[0056] Furthermore, based on the first claw pole pieces 11, the coil bracket 2 can be positioned to ensure the accuracy of the fit between the coil bracket 2 and the shell 1. Based on the fit between the first claw pole pieces 11 and the accommodating space of the coil bracket 2, the convenience of assembly between the coil bracket 2 and the shell 1 can be improved.

[0057] Specifically, a fitting opening is provided in the middle of the first pole plate 5 , and the fitting opening is adapted to the opening size of the cylindrical structure of the coil support 2 , so that the first pole plate 5 can cover the upper end of the coil support 2 .

[0058] The mating opening of the first pole plate 5 is folded downward to form a plurality of second claw pole pieces 51, and the plurality of second claw pole pieces 51 are arranged in a circumferential direction. When the first pole plate 5 covers the coil bracket 2, the plurality of second claw pole pieces 51 are staggered and matched with the plurality of first claw pole pieces 11 to form a meshing state. The plurality of first claw pole pieces 11 and the plurality of second claw pole pieces 51 are set to magnetic materials, so that the plurality of first claw pole pieces 11 and the plurality of second claw pole pieces 51 can interact with the coil inside the coil bracket 2, thereby driving the rotor assembly 6 in the coil bracket 2 to rotate.

[0059] Specifically, the sizes and shapes of several first claw pole pieces 11 are consistent, and / or the sizes and shapes of several first claw pole pieces 11 are inconsistent. When several first claw pole pieces 11 have the same shape, it is convenient to process several first claw pole pieces 11 on the shell 1 and improve the versatility of assembly between the shell 1 and the coil bracket 2.

[0060] When the sizes and shapes of several first claw pole pieces 11 are inconsistent, the mass distribution of various parts of the first claw pole piece 11 is uneven. When the first claw pole piece 11 and the second claw pole piece 51 cooperate, the magnetic field forming time of the claw-pole permanent magnet motor can be extended, so that the rotor assembly 6 of the claw-pole permanent magnet motor can achieve a slow start effect, reduce the initial rotation speed of the rotor assembly 6 when starting, and effectively reduce the working noise of the claw-pole permanent magnet motor.

[0061] Specifically, the arrangement distance between the first claw pole pieces 11 is set to be unequally spaced, so that the circumferential arrangement structure of the first claw pole pieces 11 includes a first setting spacing and a second setting spacing, wherein the length of the first setting spacing is smaller than the second setting spacing.

[0062] Furthermore, at least two second setting intervals are formed in the circumferential arrangement structure of the plurality of first claw pole pieces 11. In the embodiment of the present invention, the two second setting intervals are symmetrically distributed in the circumferential arrangement structure based on the center position. The two second setting intervals enable the arrangement of the plurality of first claw pole pieces 11 to form a symmetrically distributed two-segment circular arc arrangement structure. When the claw-pole permanent magnet motor is working, the matching state formed by the plurality of first claw pole pieces 11 and the plurality of second claw pole pieces 51 can maintain a symmetrical distribution, thereby improving the rotation stability of the rotor assembly 6.

[0063] Specifically, several second claw pole pieces 51 have the same shape and size, and several second claw pole pieces 51 are arranged equidistantly in the circumferential direction. When the first pole plate 5 cooperates with the coil bracket 2, several second claw pole pieces 51 are staggered with several first claw pole pieces 11, so that several second claw pole pieces 51 can be accommodated in the first set spacing, and / or several second claw pole pieces 51 can be accommodated in the second set spacing.

[0064] Furthermore, the first setting spacing is adapted to the shape and size of the second claw pole piece 51, so that the second claw pole piece 51 can be plugged and fitted within the first setting spacing, and a gap is formed between the second claw pole piece 51 and the adjacent first claw pole piece 11, so that the first claw pole piece 11 and the second claw pole piece 51 do not contact each other, thereby ensuring that the first claw pole piece 11 and the second claw pole piece 51 can work stably.

[0065] Specifically, when the second claw pole piece 51 is plugged into and fits within the second set spacing, the second claw pole piece 51 forms a gap with the adjacent first claw pole piece 11, and forms a gap with the next adjacent first claw pole piece 11, so that the matching structure of the first claw pole piece 11 and the second claw pole piece 51 forms two groups of symmetrically distributed claw pole piece arrangement queues, and based on the interval, the matching structure of several first claw pole pieces 11 and several second claw pole pieces 51 can form two groups of claw pole piece structures, so that when the claw-pole permanent magnet motor is started, the matching magnetic field between the first claw pole piece 11 and the second claw pole piece 51 can delay the forming time and reduce the initial speed of the rotor assembly 6 when it starts.

[0066] Specifically, in an embodiment of the present invention, a plurality of first claw pole pieces 11 include two small-sized claw pole pieces 111 and two large-sized claw pole pieces 112, and the two small-sized claw pole pieces 111 and the two large-sized claw pole pieces 112 are arranged alternately, and two first setting spacings and two second setting spacings are formed in the circumferential arrangement structure of the plurality of first claw pole pieces 11, so that the plurality of first claw pole pieces 11 form two groups of arrangement structures symmetrically distributed, and when the first pole plate 5 is matched with the coil bracket 2, the second claw pole piece 51 is inserted into the spacing between the first claw pole pieces 11, so that the claw pole piece arrangement queue formed by the first claw pole piece 11 and the second claw pole piece 51 can maintain the stability of the structural arrangement, while improving the operation stability of the claw-pole permanent magnet motor.

[0067] Specifically, a protrusion 24 is provided on the inner wall of the hollow structure of the coil support 2, and the protrusion 24 is correspondingly located within the second set spacing. When the first pole plate 5 is matched above the coil support 2, the first claw pole piece 11 and the second claw pole piece 51 are engaged with each other, and based on the cooperation of several first claw pole pieces 11 and several second claw pole pieces 51, two groups of claw pole piece arrangement queues are formed. The protrusion 24 can be filled between the two groups of claw pole piece queues, so that several first claw pole pieces 11 and several second claw pole pieces 51 and the protrusion 24 cooperate to form a complete magnetic component, so that the internal structure of the claw-pole permanent magnet motor is complete and the mass distribution of the internal cooperation structure is uniform, thereby improving the operation stability of the claw-pole permanent magnet motor.

[0068] Furthermore, the protrusion 24 can be set to a non-magnetic material, or the protrusion 24 can be set to a weak magnetic material, so that the magnetic performance of the protrusion 24 is lower than the magnetic performance of the first claw pole piece 11 and the second claw pole piece 51, and the magnetic performance of the protrusion 24 is less than half of the magnetic performance of the first claw pole piece 11 and the second claw pole piece 51, so that the protrusion 24 can meet the magnetic isolation between several first claw pole pieces 11 and several second claw pole pieces 51, effectively reduce the starting speed of the claw-pole permanent magnet motor, and reduce the starting noise of the claw-pole permanent magnet motor.

[0069] Specifically, a convex rib 25 is arranged in the hollow structure of the coil support 2, and a third setting spacing for accommodating the small-sized claw pole piece 111 is formed between the convex rib 25 and the protrusion 24. The first claw pole piece 11 and the second claw pole piece 51 can be positioned based on the third setting spacing, thereby improving the convenience of the first claw pole piece 11 of the shell 1 and the hollow structure inside the coil support 2. Based on the convex rib 25, the small-sized claw pole piece 111 can be physically isolated from the adjacent second claw pole piece 51, thereby adjusting the magnetic field forming rate of the claw-pole permanent magnet motor when starting, and reducing the initial starting noise of the claw-pole permanent magnet motor.

[0070] Furthermore, a connecting hole is provided at the bottom of the shell 1, and the rotor assembly 6 is assembled with the shell 1 based on a rotating connecting shaft, and a magnetic component is provided in the rotor assembly 6. When the claw-pole permanent magnet motor is connected to an external power supply, an induced magnetic field is generated after the coil in the coil bracket 2 is energized, and a plurality of the first claw pole pieces 11 and a plurality of the second claw pole pieces 51 react in the induced magnetic field, driving the rotor assembly 6 to rotate in the induced magnetic field, thereby realizing the working drive of the claw-pole permanent magnet motor.

[0071] Furthermore, based on the cooperation between the protrusion 24 and the convex rib 25, the cooperation between the plurality of first claw pole pieces 11 and the plurality of second claw pole pieces 51 is tight, and based on the convex rib 25, the gap between the first claw pole piece 11 and the protrusion 24 can be reduced within the second set spacing, thereby reducing the magnetic field air gap and magnetic leakage phenomenon of the claw-pole permanent magnet motor, thereby improving the operation reliability of the claw-pole permanent magnet motor.

[0072] Based on a plurality of first claw pole pieces 11 of different sizes and randomly arranged, in combination with a plurality of second claw pole pieces 51 of the same size and uniformly arranged, a larger spacing can be formed between a plurality of first claw pole pieces 11 and a plurality of second claw pole pieces 51, thereby delaying the rate of generating magnetic field inside the claw-pole permanent magnet motor. In combination with the convex block 24 and the convex rib 25 structure arranged in the hollow structure inside the coil support 2, the tightness of the matching structure between the first claw pole piece 11 and the second claw pole piece 51 can be improved, and the tightness of the magnetic field operation inside the claw-pole permanent magnet motor can be improved, thereby reducing the magnetic field gap, reducing the magnetic leakage phenomenon, and improving the operation reliability of the claw-pole permanent magnet motor.

[0073] Specifically, Fig.10 A schematic diagram of the structure of a gear reduction group in an embodiment of the present invention is shown; Fig.11 A schematic diagram of the structure of a motor end cover in an embodiment of the present invention is shown; Fig.12The schematic diagram of the structure of the motor working shaft in the embodiment of the present invention is shown. The claw-pole permanent magnet motor is also provided with a gear transmission mechanism and a motor working shaft 9, the gear transmission mechanism includes a plurality of transmission gears, the plurality of transmission gears are meshed in sequence to form a reduction gear set 7 structure, the output shaft of the rotor assembly 6 is connected to the reduction gear set 7, and one end of the reduction gear set 7 is connected to the motor working shaft 9, so that the rotor assembly 6 can increase the output torque of the claw-pole permanent magnet motor based on the reduction gear set 7, thereby meeting the working requirements of the claw-pole permanent magnet motor.

[0074] Furthermore, the plurality of transmission gears include: a first transmission gear 71, a second transmission gear 72, a third transmission gear 73, a fourth transmission gear 74 and a fifth transmission gear 75. The output shaft of the rotor assembly 6 is provided with a driving gear, the driving gear of the rotor assembly 6 is meshed with the first transmission gear 71, and the second transmission gear 72, the third transmission gear 73, the fourth transmission gear 74 and the fifth transmission gear 75 are meshed and connected in sequence, the first transmission gear 71, the second transmission gear 72, the third transmission gear 73, the fourth transmission gear 74 and the fifth transmission gear 75 are arranged in a spiral shape, so that the reduction gear set 7 can meet the output reduction transmission requirements of the rotor assembly 6, and reduce the occupied space of the first transmission gear 71, the second transmission gear 72, the third transmission gear 73, the fourth transmission gear 74 and the fifth transmission gear 75, thereby improving the compactness of the structural setting of the claw-pole permanent magnet motor.

[0075] Furthermore, the motor working shaft 9 is arranged on the fifth transmission gear 75, so that when the rotor assembly 6 performs reduction transmission based on the first transmission gear 71, the second transmission gear 72, the third transmission gear 73, the fourth transmission gear 74 and the fifth transmission gear 75, the motor working shaft 9 can rotate with the fifth transmission gear 75.

[0076] Furthermore, the matching structure of the plurality of first claw pole pieces 11 and the plurality of second claw pole pieces 51 forms a rotating magnetic field to drive the rotor assembly 6 to rotate, and the output shaft of the rotor assembly 6 can drive the motor working shaft 9 to rotate through the reduction gear set 7 formed by the plurality of transmission gears.

[0077] Specifically, the claw-pole permanent magnet motor is provided with a motor end cover 8, and the motor end cover 8 covers the upper end of the housing 1. The rotor assembly 6 and the reduction gear assembly 7 are protected by plastic sealing based on the motor end cover 8, and the motor end cover 8 is provided with a flip hole 81. The motor working shaft 9 extends outside the motor end cover 8 based on the flip hole 81. A hole is opened at a preset position of the motor end cover 8, and the hole wall is folded toward the outside of the claw-pole permanent magnet motor to form a flip hole 81 structure. The flip hole process can ensure that the hole wall of the flip hole 81 is perpendicular to the top surface of the motor end cover 8, and the motor working shaft 9 is One end is inserted into the turned hole 81, and the motor working shaft 9 is rotationally connected to the turned hole 81. The hole wall formed by the turning hole process can limit the motor working shaft 9, thereby ensuring the coaxiality of the motor working shaft 9 and the motor end cover 8. The hole wall of the output connecting hole and the motor end cover 8 are an integrally formed structure, so that the hole wall of the output connecting hole has good bearing capacity and can bear the axial load of the rotor assembly 6 driving the motor working shaft 9 to rotate when rotating at high speed, avoiding the vibration of the motor working shaft 9 when rotating at high speed, and improving the reliability of the internal transmission of the permanent magnet motor.

[0078] Furthermore, after the motor end cover 8 is processed by the hole-turning process, the inner wall of the hole 81 is ground and polished, so that the friction between the motor working shaft 9 and the hole 81 is reduced, ensuring that the motor working shaft 9 has a good rotation effect.

[0079] Furthermore, lubrication can be performed between the motor working shaft 9 and the turned hole 81, that is, lubricating oil or lubricating powder is coated between the motor working shaft 9 and the turned hole 81, so as to reduce the friction coefficient between the motor output shaft and the output connecting hole and improve the convenience of rotation of the rotor output shaft.

[0080] Specifically, the motor working shaft 9 of the claw-pole permanent magnet motor is provided with knurling, and a knurling structure 91 is formed on the working shaft of the claw-pole permanent magnet motor based on the knurling process. The motor working shaft 9 is connected to the fifth transmission gear 75 based on the knurling structure 91. The knurling structure 91 improves the rigidity of the motor working shaft 9 of the claw-pole permanent magnet motor, and improves the structural connection stability between the motor working shaft 9 and the fifth transmission gear, so that the claw-pole permanent magnet motor can meet the motor drive requirements of external equipment.

[0081] An embodiment of the present invention provides a claw-pole permanent magnet motor, in which a base boss 23 is provided at the position of the mounting frame 21 of the coil bracket 2, so that the electrical mounting groove of the coil bracket 2 is set as a U-shaped matching groove, and the U-shaped bending mechanism of the electrical terminal 3 is matched to embed the electrical terminal 3 in the U-shaped matching groove from top to bottom, so that the assembly movement direction of the electrical terminal 3 in the coil bracket 2 is perpendicular to the plug-in connection direction of the electrical terminal 3 and the external power supply. Based on the cooperation between the base boss 23 and the electrical terminal 3, the pulling force of the connection state between the electrical terminal 3 and the coil bracket 2 can be improved, thereby improving the electrical connection stability and installation reliability of the claw-pole permanent magnet motor.

[0082] In addition, the above is a detailed introduction to a claw-pole permanent magnet motor provided in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A claw-pole permanent magnet motor, characterized in that: The claw-pole permanent magnet motor comprises: a housing, a coil support contained in the housing, and an electrical terminal matched with the coil support; The coil support is provided with a mounting frame, the mounting frame is provided with an electrical mounting groove, a base boss is provided in the electrical mounting groove, a preset distance is provided between the base boss and the inner wall of the electrical mounting groove, and the electrical mounting groove forms a U-shaped matching groove based on the preset distance; The electrical terminal is configured as a U-shaped bending structure, and the electrical terminal is embedded in the U-shaped matching groove from top to bottom based on the U-shaped bending structure; The movement direction of the electrical terminal in the electrical installation slot is perpendicular to the electrical plugging direction of the electrical terminal; The electrical terminal is formed with a lead connection end and a coil connection end based on the U-shaped bending structure, and the electrical terminal is embedded in the U-shaped matching groove; The lead connection end extends outside the U-shaped matching slot along the radial direction of the claw-pole permanent magnet motor, and the coil connection end extends outside the U-shaped matching slot along the radial direction of the claw-pole permanent magnet motor; The length of the portion of the lead wire connection end extending outward is greater than the length of the portion of the coil connection end extending outward, so that the lead wire connection end and the coil connection end are staggered; The portion of the coil connection end extending outside the electrical installation slot is folded upward, and the electrical connection position of the coil connection end and the electrical connection position of the lead connection end are on different horizontal planes; The outer side wall of the electrical terminal is provided with a positioning block, the central axis of the positioning block is located on the right side of the central axis of the rear side wall of the electrical terminal, that is, the positioning block is located at a position slightly to the right of the rear side wall of the electrical terminal, and the relative matching position between the electrical terminal and the coil support is defined based on the positioning block; The claw-pole permanent magnet motor is provided with a connecting wire, and the base boss in the electrical installation slot extends outwardly to form a supporting shaft; When the connecting wire is plugged into the electrical plug hole of the lead connection end, the support shaft is located below the bent portion of the connecting wire, and the support shaft is connected to the connecting wire.

2. The claw-pole permanent magnet motor according to claim 1, characterized in that: The inner wall of the electrical installation groove is provided with a limiting groove, the groove direction of the limiting groove is along the vertical direction, and the electrical terminal is embedded in the U-shaped matching groove from top to bottom along the limiting groove.

3. The claw-pole permanent magnet motor according to claim 1, characterized in that: The claw-pole permanent magnet motor also includes a connecting end cover, which covers the mounting frame and is provided with a through hole. One end of the connecting wire extends into the connecting end cover based on the through hole, and one end of the connecting wire is electrically connected to the lead connection end.

4. The claw-pole permanent magnet motor according to claim 3, characterized in that: The lead connection end of the electrical terminal is provided with an electrical plug hole, and one end of the connecting wire plugged into the connection end cover is provided with an electrical plug end; The connecting wire is plugged into the electrical plug hole of the lead wire connecting end based on the electrical plug end.

5. The claw-pole permanent magnet motor according to claim 4, characterized in that: The through hole formed in the connection end cover is staggered with the lead connection end of the electrical terminal, and one end of the connection wire extending in the connection end cover is folded and matched with the electrical plug hole of the lead connection end.

6. The claw-pole permanent magnet motor according to claim 1, characterized in that: The middle part of the coil bracket is set as a hollow accommodating space, the inner bottom surface of the shell is folded upward to form a plurality of first claw pole pieces, and the plurality of first claw pole pieces are arranged along the circumferential direction. The coil bracket is assembled in the shell, and the plurality of first claw pole pieces are located in the accommodating space of the coil bracket, and any of the first claw pole pieces is attached to the inner wall of the accommodating space of the coil bracket.

7. The claw-pole permanent magnet motor according to claim 6, characterized in that: The claw-pole permanent magnet motor further comprises a first pole plate, a mating opening is provided in the middle of the first pole plate, the mating opening of the first pole plate is folded downward to form a plurality of second claw pole pieces, and the plurality of second claw pole pieces are arranged along the circumferential direction; When the first pole plate covers the coil support, a plurality of the second claw pole pieces are staggeredly matched with a plurality of the first claw pole pieces to form a meshing state.

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