Meshing tooth transmission part, meshing tooth transmission assembly, speed reducer, electric drive assembly and vehicle

Abstract

The utility model relates to a meshing transmission part, a meshing transmission assembly, a speed reducer, an electric drive assembly and a vehicle, the meshing transmission part comprises a first meshing part and a magnet, the first meshing part comprises a tooth part, the tooth part is provided with a mounting hole, and the magnet is arranged in the mounting hole. The magnets are arranged in the mounting holes of the tooth parts, so that when the two meshing transmission parts are in meshing transmission, mutual repulsive force can be formed through magnetic fields of the magnets, the contact force of the two meshing transmission parts is reduced, and noise generated when the two meshing transmission parts are in meshing transmission is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of toothed transmission elements, and in particular to a toothed transmission element, a toothed transmission assembly, a speed reducer, an electric drive assembly and a vehicle. BACKGROUND

[0002] The current toothed transmission element, such as a gear, is driven by meshing with another toothed transmission element. A toothed transmission element generates a large contact force due to the pressure of the meshing with another toothed transmission element during transmission, which causes the toothed transmission element to generate a large noise during operation. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a toothed transmission element, a toothed transmission assembly, a speed reducer, an electric drive assembly and a vehicle, which reduces the noise generated when two toothed transmission elements mesh and drive, thereby at least partially solving the above technical problems.

[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a toothed transmission element is provided, comprising a first toothed element, the first toothed element comprising a tooth portion, the tooth portion being provided with a mounting hole; and

[0005] A magnet is arranged in the mounting hole.

[0006] Optionally, in the tooth thickness direction of the tooth portion, the tooth portion has opposite first and second tooth side surfaces, and the mounting hole is arranged between and spaced apart from the first and second tooth side surfaces.

[0007] Optionally, the tooth portion has a tooth top, and the extension direction of the mounting hole is consistent with the extension direction of the tooth top.

[0008] And / or, the tooth portion further comprises a tooth top surface connecting the first and second tooth side surfaces, and the tooth top surface is spaced apart from the mounting hole.

[0009] Optionally, the mounting hole is configured as a blind hole.

[0010] Optionally, the magnet is arranged in the blind hole.

[0011] Optionally, the toothed transmission element further comprises a first cover body for covering the blind hole.

[0012] Optionally, the first cover body is configured as a second toothed element, and in the extension direction of the tooth portion, the projection of the second toothed element is consistent with the projection of the first toothed element.

[0013] And / or, the first cover body is detachably connected or non-detachably connected with the first toothed element.

[0014] Optionally, the magnet extends out of the blind hole.

[0015] Optionally, the mounting hole is configured as a through hole.

[0016] Optionally, the magnet is arranged in the through hole.

[0017] Optionally, the gear further comprises a plurality of second covers, and two ends of the through hole are respectively covered by one of the second covers.

[0018] Optionally, at least one end of the magnet extends out of the mounting hole in the hole depth direction of the mounting hole.

[0019] Optionally, the magnet is in interference fit with the mounting hole.

[0020] Optionally, the magnet is bonded to the mounting hole.

[0021] Optionally, the magnet is cuboid-shaped.

[0022] Optionally, in the tooth thickness direction of the tooth portion, the size of the magnet is A, the tooth thickness is s, and A≤0.5s.

[0023] Optionally, the tooth portion is provided with a plurality of tooth portions, and the magnet is provided with a plurality of magnets, and the plurality of magnets are arranged one-to-one with the plurality of tooth portions.

[0024] Optionally, the plurality of tooth portions are arranged along a first direction, and in the first direction, the N poles and S poles of the plurality of magnets are arranged in sequence.

[0025] According to a second aspect of the present application, a gear assembly is provided, comprising:

[0026] a plurality of the foregoing gear assemblies, and at least two of the gear assemblies are driven by the magnetic field of the magnet.

[0027] According to a third aspect of the present application, a reducer is provided, comprising:

[0028] the foregoing gear assembly;

[0029] or, the foregoing gear assembly.

[0030] According to a fourth aspect of the present application, an electric drive assembly is provided, comprising:

[0031] the foregoing gear assembly;

[0032] or, the foregoing gear assembly;

[0033] or, the foregoing reducer.

[0034] According to a fifth aspect of the present application, a vehicle is provided, comprising:

[0035] the aforementioned toothed transmission member;

[0036] or, the aforementioned toothed transmission assembly;

[0037] or, the aforementioned speed reducer;

[0038] or, the aforementioned electric drive assembly.

[0039] In the toothed transmission member of the embodiment of the present application, the magnet is arranged in the mounting hole of the tooth part, which can form repulsive force by the magnetic field of the magnet when the two toothed transmission members are engaged and driven, so as to reduce the contact force of the two toothed transmission members, thereby reducing the noise generated when the two toothed transmission members are engaged and driven.

[0040] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0042] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0043] Figure 1 is the overall structure schematic diagram of the toothed transmission member provided in the first embodiment of the present disclosure, wherein the toothed transmission member takes a gear as an example;

[0044] Figure 2 is Figure 1 the cross-sectional view of the toothed transmission member, the cross-sectional direction is the axial direction of the toothed transmission member;

[0045] Figure 3 is Figure 1 the exploded view of the toothed transmission member;

[0046] Figure 4 is Figure 1 the cross-sectional view of the toothed transmission member, the cross-sectional direction is perpendicular to the axial direction of the toothed transmission member;

[0047] Figure 5 is Figure 4 the enlarged view of A in FIG. 4;

[0048] Figure 6is a schematic diagram of the overall structure of a toothed transmission member provided in a second embodiment of the present disclosure, in which the toothed transmission member is exemplified by a gear;

[0049] Figure 7 is Figure 6 is a sectional view of the toothed transmission member, the sectioning direction being the axial direction of the toothed transmission member;

[0050] Figure 8 is Figure 6 is an exploded view of the toothed transmission member;

[0051] Figure 9 is a schematic diagram of the overall structure of a toothed transmission member provided in a third embodiment of the present disclosure, in which the toothed transmission member is exemplified by a gear;

[0052] Figure 10 is Figure 9 is a sectional view of the toothed transmission member, the sectioning direction being the axial direction of the toothed transmission member;

[0053] Figure 11 is Figure 9 is an exploded view of the toothed transmission member;

[0054] Figure 12 is a schematic diagram of the overall structure of a toothed transmission member provided in a fourth embodiment of the present disclosure, in which the toothed transmission member is exemplified by a gear;

[0055] Figure 13 is Figure 12 is a sectional view of the toothed transmission member, the sectioning direction being the axial direction of the toothed transmission member;

[0056] Figure 14 is Figure 12 is an exploded view of the toothed transmission member;

[0057] Figure 15 is a schematic diagram of the overall structure of a toothed transmission member provided in a fifth embodiment of the present disclosure, in which the toothed transmission member is exemplified by a gear;

[0058] Figure 16 is Figure 15 is a sectional view of the toothed transmission member, the sectioning direction being the axial direction of the toothed transmission member;

[0059] Figure 17 is Figure 15 is an exploded view of the toothed transmission member;

[0060] Figure 18 is a schematic diagram of the overall structure of a toothed transmission member provided in a sixth embodiment of the present disclosure, in which the toothed transmission member is exemplified by a gear;

[0061] Figure 19 is Figure 18A sectional view of the toothed transmission member, the sectional direction being the axial direction of the toothed transmission member.

[0062] Figure 20 is Figure 18 An exploded view of the toothed transmission member.

[0063] Explanation of reference signs:

[0064] 100 toothed transmission member; 200 first toothed member; 210 tooth portion; 211 first tooth flank; 212 tooth crest; 213 mounting hole; 214 second tooth flank; 300 magnet; 310 first cover; 320 second cover. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor are within the protection scope of the present application.

[0066] According to a first aspect of the present application, with reference to Figures 1 to 5 The present disclosure provides a toothed transmission member 100, which comprises a first toothed member 200 and a magnet 300. The first toothed member 200 comprises a tooth portion 210, and the tooth portion 210 is provided with a mounting hole 213, and the magnet 300 is arranged in the mounting hole 213. This makes the two toothed transmission members 100 repel each other when engaged and driven, so as to form repulsive force through the magnetic field of the magnet 300, so as to reduce the contact force of the two toothed transmission members 100, thereby reducing the noise generated when the two toothed transmission members 100 are engaged and driven.

[0067] Optionally, in the first embodiment, the tooth portion 210 has opposite first and second tooth sides 211 and 214 in the tooth thickness direction of the tooth portion 210. Without loss of generality, the first tooth side 211 of one gear 100 is used to contact the first tooth side 211 of another gear 100, and the second tooth side 214 of one gear 100 is used to contact the second tooth side 214 of another gear 100 when the gears 100 are used together. As an example, when the gears 100 are under heavy load, the first tooth side 211 of one gear 100 can contact the corresponding first tooth side 211 of another gear 100, or the second tooth side 214 of one gear 100 can contact the corresponding second tooth side 214 of another gear 100. The tooth portion 210 is provided with a mounting hole 213, which is arranged between and spaced apart from the first and second tooth sides 211 and 214. In this way, the tooth portion 210 of the gear 100 provides protection for the magnet 300, so that even when the gears 100 are under heavy load, the magnet 300 of one gear 100 will not directly contact the magnet 300 of another gear 100. In this way, the damage to the magnet 300 is reduced, so that the gear 100 can run more smoothly, and thus the noise generated by the gear 100 when running is smaller.

[0068] By way of example, for ease of illustration, the two gears 100 used together are referred to as a gear assembly. When the gear assembly is not in operation, there is no external force interference in the system, the repulsive force between the two gears 100 is balanced, and the two gears 100 remain in a stationary state. The first tooth side 211 of one gear 100 does not contact the first tooth side 211 of another gear 100, and the second tooth side 214 of one gear 100 does not contact the second tooth side 214 of another gear 100.

[0069] When the gear assembly is in operation and under low load, the repulsive force between the two first tooth sides 211 that are in contact with each other is greater than the actual engagement force, and the repulsive force between the two second tooth sides 214 that are in contact with each other is greater than the actual engagement force. The gear assembly can achieve contactless transmission. At this time, the gear 100 can greatly reduce the noise of the gear 100 without lubrication.

[0070] When the gear meshing assembly is working and under high load, the repulsive force between the two first tooth flanks 211 in mutual engagement is less than the actual engagement force, the first tooth flanks 211 are in direct contact, but the repulsive force provided by the magnet 300 still exists, the indirect contact force between the first tooth flanks 211 is much smaller than that of the gear meshing assembly without the magnet 300, which can effectively reduce the transmission error of the gear meshing assembly 100 and significantly reduce the noise of the gear meshing assembly 100. Alternatively, the repulsive force between the two second tooth flanks 214 in mutual engagement is less than the actual engagement force, the second tooth flanks 214 are in direct contact, but the repulsive force provided by the magnet 300 still exists, the indirect contact force between the second tooth flanks 214 is much smaller than that of the gear meshing assembly without the magnet 300, which can effectively reduce the transmission error of the gear meshing assembly 100 and significantly reduce the noise of the gear meshing assembly 100.

[0071] When the gear meshing assembly is under alternating load, such as when the gear meshing assembly is applied to the electric drive assembly of a new energy vehicle, when the vehicle is in the state of accelerating and kinetic energy recovery alternately, the force on the first tooth flank 211 of the engaged tooth 210 changes with the acceleration or kinetic energy recovery state of the vehicle, and the change of the force on the first tooth flank 211 easily causes the knocking problem of the tooth 210. However, the gear meshing assembly 100 of the present application has the repulsive force provided by the magnet 300 as a buffer, which can greatly reduce the risk of knocking noise of the tooth 210. Alternatively, the force on the second tooth flank 214 changes with the acceleration or kinetic energy recovery state of the vehicle, and the change of the force on the second tooth flank 214 easily causes the knocking problem of the tooth 210. However, the gear meshing assembly 100 of the present application has the repulsive force provided by the magnet 300 as a buffer, which can greatly reduce the risk of knocking noise of the tooth 210.

[0072] It is worth mentioning that the gear meshing assembly 100 can have various structural forms. For example, the first gear meshing member 200 can be but is not limited to a helical gear, a spur gear, an external gear, an internal gear, a bevel gear, a rack gear, a cylindrical gear, or a non-circular gear. The material of the gear meshing assembly 100 can be but is not limited to gear steel, silicon steel, or a material that can increase magnetic permeability. In addition, the gear meshing assembly 100 can be used not only with another gear meshing assembly 100, but also with a chain. The gear meshing assembly 100 can be applied to the electric drive assembly of a vehicle, and can also be applied to the steering system of a vehicle.

[0073] The mounting hole 213 can have various hole depth directions. In the first embodiment, the tooth 210 has a tooth top, and the extension direction of the mounting hole 213 is consistent with the extension direction of the tooth top.

[0074] Exemplarily, taking the straight gear as an example, the extension direction of the tooth top is the extension direction of the rotation axis of the straight gear, and the hole depth direction of the mounting hole 213 is the extension direction of the rotation axis of the straight gear. It can be understood that the tooth portion 210 of the straight gear has two end faces in the extension direction of the rotation axis, and the two end faces are non-working faces, that is, the two end faces do not mesh with another meshing gear 100. In this way, the mounting hole 213 can be formed on one end face, so that the mounting hole 213 is formed on the tooth portion 210.

[0075] However, the design is not limited to this. In some other embodiments, the hole depth direction of the mounting hole 213 is the direction from the tooth root to the tooth top.

[0076] Once the meshing gear shakes, the tooth top surface 212 of the meshing gear can be in contact with another meshing gear. In order to further reduce the damage of the magnet 300, optionally, in the first embodiment, the tooth portion 210 further includes a tooth top surface 212 connected to the first tooth side surface 211 and the second tooth side surface 214, and the tooth top surface 212 is spaced apart from the mounting hole 213. That is, the mounting hole 213 is not formed on the tooth top surface 212. In this way, the damage of the magnet 300 can be reduced.

[0077] In order to make the magnet 300 and the tooth portion 210 connect more stably, optionally, in the first embodiment, the magnet 300 is in interference fit with the mounting hole 213. Exemplarily, the implementation manner of the interference fit between the magnet 300 and the mounting hole 213 can be that the tooth portion 210 is heated, and then the magnet 300 is put into the through hole. After the tooth portion 210 cools down, the magnet 300 and the mounting hole 213 form interference fit. However, the design is not limited to this. In some other embodiments, the magnet 300 is bonded to the mounting hole 213.

[0078] The magnet 300 can have various shapes. Optionally, in the first embodiment, the shape of the magnet 300 is a cuboid. In this way, it is convenient to design the magnetic poles of the magnet 300. In some other embodiments, the shape of the magnet 300 is a cylinder, a cube with a rhombus cross section, or a cube with a trapezoidal cross section; or the shape, length, and other dimensions of the magnet 300 can be designed according to the noise reduction target requirements of the meshing gear 100 and the installation space.

[0079] Optionally, in the first embodiment, the size of the magnet 300 in the tooth thickness direction of the tooth portion 210 is A, and the tooth thickness is s, and A≤0.5s. In this way, in the tooth thickness direction of the tooth portion 210, the solid part of the tooth portion 210 is not too thin, so that the structural strength of the tooth portion 210 is higher, which is beneficial to prolong the service life of the first meshing gear 200.

[0080] Optionally, in the first embodiment, the plurality of teeth 210 are provided, the plurality of magnets 300 are provided, and the plurality of magnets 300 are provided in one-to-one correspondence with the plurality of teeth 210. In this way, the magnetic coupling strength of the toothed gear 100 can be improved.

[0081] Optionally, the plurality of teeth 210 are arranged along a first direction, and in the first direction, the N poles and the S poles of the plurality of magnets 300 are arranged in sequence. In this way, the magnetic field of the toothed gear 100 is more uniform, and the noise generated when the toothed gear 100 operates can be reduced. For example, taking the toothed gear 100 as a spur gear, the first direction is the circumferential direction of the spur gear, and the N poles and the S poles of the plurality of magnets 300 are arranged alternately in the circumferential direction of the toothed gear 100.

[0082] The mounting hole 213 can have various structural forms. Optionally, in the first embodiment, the mounting hole 213 is configured as a blind hole. It should be noted that the cross section of the blind hole can be, but is not limited to, a rhombus, a trapezoid, a parallelogram, a circle, or other shapes, and the normal direction of the cross section is the hole depth direction of the blind hole. However, the design is not limited to this. In some other embodiments, the mounting hole 213 can also be configured as a blind groove, and the cross section of the blind groove can be, but is not limited to, a rhombus, a trapezoid, a parallelogram, a circle, or other shapes, and the normal direction of the cross section is the groove depth direction of the blind groove.

[0083] Optionally, in the first embodiment, the magnet 300 is arranged in the blind hole. That is, the entire magnet 300 is accommodated in the blind hole. In this way, when the toothed gear 100 operates, the magnet 300 can be prevented from interfering with other components outside the toothed gear 100. In addition, the structure of the toothed gear 100 is more compact, and the toothed gear 100 can be miniaturized.

[0084] Referring to Figures 6 to 8 The application also provides a second embodiment of the toothed gear 100. To avoid excessive repetition, the same parts of the second embodiment and the first embodiment can be referred to the first embodiment, and the differences between the second embodiment and the first embodiment are described below.

[0085] Optionally, in the second embodiment, the toothed gear 100 further comprises a first cover 310 for covering the blind hole. In this way, under the blocking of the first cover 310, the magnet 300 can be prevented from being separated from the mounting hole 213 due to the high movement speed of the toothed gear 100.

[0086] Optionally, in the second embodiment, the first cover 310 is configured as a second toothed element, and the projection of the second toothed element is consistent with the projection of the first toothed element 200 in the extension direction of the toothed portion 210. In this way, when the toothed transmission 100 is under heavy load, the second toothed element can be used for engagement transmission to share the force borne by the first toothed element 200, which is beneficial to prolong the service life of the first toothed element 200.

[0087] Optionally, in the second embodiment, the first cover 310 is detachably connected with the first toothed element 200. In this way, the magnet 300 is convenient to replace. For example, the first cover 310 is locked to the first toothed element 200 by bolts. However, the design is not limited to this, and in some other embodiments, the connection is not detachable. In this way, the magnet 300 can be stably arranged in the mounting hole 213. For example, the first cover 310 is connected with the first toothed element 200 by rivets, or the first cover 310 is bonded to the first toothed element 200.

[0088] Referring back to Figures 9 to 11 The application further provides a third embodiment of the toothed transmission 100. For the sake of brevity, the same parts of the third embodiment and the first embodiment can be referred to the first embodiment, and the different parts of the third embodiment and the first embodiment are introduced as follows.

[0089] In the third embodiment, one end of the magnet 300 protrudes out of the blind hole. In this way, the magnet 300 can generate a larger magnetic field, which is beneficial to improve the magnetic coupling effect of the toothed transmission 100, to improve the repulsive force formed when the two toothed transmissions 100 are used together, and to reduce the contact force when the two toothed transmissions 100 are used together.

[0090] Referring back to Figures 12 to 14 The application further provides a fourth embodiment of the toothed transmission 100. For the sake of brevity, the same parts of the fourth embodiment and the first embodiment can be referred to the first embodiment, and the different parts of the fourth embodiment and the first embodiment are introduced as follows.

[0091] The mounting hole 213 can have various structural forms. Optionally, in the fourth embodiment, the mounting hole 213 is configured as a through hole. It is worth mentioning that the cross section of the through hole can be but is not limited to a rhombus, a trapezoid, a parallelogram, a circle, or other shapes, and the normal direction of the cross section is the hole depth direction of the through hole. However, the design is not limited to this, and in some other embodiments, the mounting hole 213 can also be configured as a through slot, and the cross section of the through slot can be but is not limited to a rhombus, a trapezoid, a parallelogram, a circle, or other shapes, and the normal direction of the cross section is the slot depth direction of the through slot.

[0092] Optionally, in the fourth embodiment, the magnet 300 is arranged in the through hole. That is, the whole magnet 300 is accommodated in the through hole. In this way, when the toothed transmission member 100 is in operation, the magnet 300 can be prevented from interfering with other components outside the toothed transmission member 100. In addition, the structure of the toothed transmission member 100 is more compact, which is conducive to miniaturization of the toothed transmission member 100.

[0093] The application further provides a fourth embodiment of the toothed transmission member 100. For the sake of brevity, the fourth embodiment and the same parts of the fourth embodiment can be referred to the fourth embodiment, and the differences between the fourth embodiment and the fourth embodiment are described below.

[0094] Referring to the drawings together, Figures 15 to 17 The application further provides a fifth embodiment of the toothed transmission member 100. For the sake of brevity, the fifth embodiment and the fourth embodiment are the same as the fourth embodiment, and the differences between the fifth embodiment and the fourth embodiment are described below.

[0095] Optionally, in the fifth embodiment, the toothed transmission member 100 further comprises a plurality of second covers 320, and the two ends of the through hole are covered by a second cover 320 respectively. In this way, under the blocking of the second cover 320, the magnet 300 can be prevented from being separated from the mounting hole 213 due to the high speed of the toothed transmission member 100.

[0096] Referring to the drawings together, Figures 18 to 20 The application further provides a sixth embodiment of the toothed transmission member 100. For the sake of brevity, the sixth embodiment and the fourth embodiment are the same as the fourth embodiment, and the differences between the sixth embodiment and the fourth embodiment are described below.

[0097] Optionally, in the sixth embodiment, at least one end of the magnet 300 protrudes out of the mounting hole 213 in the hole depth direction of the mounting hole 213. In this way, the magnet 300 can generate a larger magnetic field, which is conducive to improving the magnetic coupling effect of the toothed transmission member 100, improving the repulsive force formed when two toothed transmission members 100 are used together, and reducing the contact force when two toothed transmission members 100 are used together. Exemplarily, one end of the magnet 300 protrudes out of the mounting hole 213, or both ends of the magnet 300 protrude out of the mounting hole 213.

[0098] In the second aspect, the embodiments of the application provide a toothed transmission assembly. The toothed transmission assembly comprises a plurality of the toothed transmission members 100 described above. The toothed transmission members 100 adopt all the technical solutions of the above-mentioned embodiments, and thus at least have all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. At least two toothed transmission members 100 are driven by each other at least through the magnetic field of the magnet 300. The toothed transmission assembly can be but is not limited to a planetary gear.

[0099] In a third aspect, the embodiments of the utility model provide a speed reducer, the speed reducer includes the toothed gear 100 or the toothed gear assembly, the toothed gear 100 adopts all the technical solutions of the above all embodiments, the toothed gear assembly adopts all the technical solutions of the above all embodiments, therefore at least has all the beneficial effects brought by the technical solutions of the above embodiments, here will not repeat.

[0100] In a fourth aspect, the embodiments of the utility model provide an electric drive assembly, the electric drive assembly includes the toothed gear 100, the toothed gear assembly or the speed reducer, the toothed gear 100 adopts all the technical solutions of the above all embodiments, the toothed gear assembly adopts all the technical solutions of the above all embodiments, the speed reducer adopts all the technical solutions of the above all embodiments, therefore at least has all the beneficial effects brought by the technical solutions of the above embodiments, here will not repeat.

[0101] In a fifth aspect, the embodiments of the utility model provide a vehicle, the vehicle includes the toothed gear 100, the toothed gear assembly or the speed reducer, the toothed gear 100 adopts all the technical solutions of the above all embodiments, the toothed gear assembly adopts all the technical solutions of the above all embodiments, the speed reducer adopts all the technical solutions of the above all embodiments, the electric drive assembly adopts all the technical solutions of the above all embodiments, therefore at least has all the beneficial effects brought by the technical solutions of the above embodiments, here will not repeat.

[0102] The vehicle can be a fuel automobile, a plug-in hybrid electric vehicle or a new energy vehicle, and the present disclosure does not make specific limitation thereon.

[0103] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0104] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0105] The embodiments, implementation manners and related technical features of the present application can be combined, replaced with each other without conflict.

[0106] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution content of the present application and in accordance with the technical essence of the present application, are still within the scope of the technical solution of the present application.

Claims

1. A cogwheel drive, characterized in that, The first toothed member comprises a tooth portion provided with a mounting hole. A magnet is arranged in the mounting hole. In the tooth thickness direction of the tooth portion, the tooth portion has opposite first and second tooth sides, and the mounting hole is arranged between and spaced apart from the first and second tooth sides.

2. The rod gearing according to claim 1, characterized in that The tooth portion has a tooth top, and the extension direction of the mounting hole is consistent with the extension direction of the tooth top.

3. The rod gearing according to claim 2, characterized in that The tooth portion further comprises a tooth top surface connecting the first and second tooth sides, and the tooth top surface is spaced apart from the mounting hole. The mounting hole is configured as a blind hole.

4. The rod drive of claim 1 wherein, The magnet is arranged in the blind hole.

5. The rod gearing according to claim 4, characterized in that The toothed transmission member further comprises a first cover for covering the blind hole.

6. The rod gearing according to claim 5, characterized in that The first cover is configured as a second toothed member, and the projection of the second toothed member in the extension direction of the tooth portion is consistent with the projection of the first toothed member.

7. The rod gearing according to claim 6, characterized in that The first cover is detachably or non-detachably connected with the first toothed member. The magnet extends out of the blind hole.

8. The rod drive of claim 4 wherein, The mounting hole is configured as a through hole.

9. The rod drive of claim 1 wherein, The magnet is arranged in the through hole.

10. The rod gearing according to claim 9, characterized in that The toothed transmission member further comprises a plurality of second covers, and both ends of the through hole are covered by a second cover.

11. The rod gearing according to claim 10, characterized in that In the hole depth direction of the mounting hole, at least one end of the magnet extends out of the mounting hole.

12. The rod gearing according to claim 9, characterized in that The magnet is interference-fitted with the mounting hole.

13. The rod gearing according to claim 1, characterized in that The magnet is bonded to the mounting hole. The magnet is cuboid-shaped.

14. The rod gearing according to claim 1, characterized in that In the tooth thickness direction of the tooth portion, the size of the magnet is A, and the tooth thickness is s, and A≤0.5s.

15. The rod gearing according to claim 1, characterized in that The tooth portion is provided with a plurality of magnets, and the plurality of magnets are arranged one-to-one with the plurality of tooth portions.

16. The rod gearing according to any one of claims 1 to 15, characterized in that The plurality of tooth portions are arranged along a first direction, and in the first direction, the N and S poles of the plurality of magnets are arranged in sequence.

17. The rod gearing according to claim 16, characterized in that The toothed transmission member comprises:

18. A rod transmission assembly characterized by, A plurality of toothed transmission members according to any one of claims 1 to 17, and at least two of the toothed transmission members are driven by the magnetic field of the magnet. The toothed transmission member comprises:

19. A speed reducer characterized by, Any one of claims 1 to 17; or the toothed transmission assembly of claim 18. The toothed transmission member comprises: Any one of claims 1 to 17; or the toothed transmission assembly of claim 18; or the speed reducer of claim 19.

20. An electric drive assembly, comprising: The toothed transmission member comprises: Any one of claims 1 to 17; or the toothed transmission assembly of claim 18; or the speed reducer of claim 19; or the electric drive assembly of claim 20. ​ ​ 21. A vehicle characterized by ​ ​ ​ ​ ​

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