Water pump and vehicle

Abstract

The present invention provides a water pump and a vehicle. The water pump includes: an electric motor, which includes a housing and a rotating shaft; a hydraulic component, which includes an impeller, and the impeller is connected to the rotating shaft; wherein, the housing is provided with at least one bearing mounting portion, and the bearing mounting portion is provided with a bearing hole and a thrust surface; a bearing is mounted at the bearing mounting portion, the rotating shaft passes through the bearing, and the bearing is provided with a stop convex edge, and the stop convex edge is in abutting cooperation with the thrust surface to axially limit the bearing. For the water pump provided by the present invention, the stop step on the housing of the water pump is cancelled, and a bearing with a stop convex edge is used for cooperation, and the thrust surface of the bearing mounting portion is in abutting cooperation with the stop convex edge of the bearing to axially limit the bearing, thereby reducing the axial space of the housing, reducing the processing difficulty of the housing, and reducing the cost of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and more particularly, to a water pump and a vehicle. Background Art

[0002] Currently, in the design of the housing of a water pump, a stop step is designed in the bearing mounting hole for axially limiting the bearing. The setting of this stop step will increase the axial space of the whole machine, resulting in a waste of axial space. At the same time, it will also increase the processing difficulty at the housing mounting location, leading to an increase in the cost of the product. Summary of the Invention

[0003] In order to solve at least one of the above technical problems, an object of the present invention is to provide a water pump.

[0004] Another object of the present invention is to provide a vehicle including the above water pump.

[0005] To achieve the above object, a technical solution of the first aspect of the present invention provides a water pump, including: a motor, the motor including a housing and a rotating shaft; a hydraulic component, the hydraulic component including an impeller, the impeller being connected to the rotating shaft; wherein, the housing is provided with at least one bearing mounting portion, the bearing mounting portion is provided with a bearing hole and a thrust surface; a bearing is mounted at the bearing mounting portion, the rotating shaft passes through the bearing, the bearing is provided with a stop convex edge, and the stop convex edge is in abutting cooperation with the thrust surface to axially limit the bearing.

[0006] The water pump provided by the technical solution of the first aspect of the present invention cancels the stop step on the housing of the water pump and uses a bearing with a stop convex edge for cooperation. The thrust surface of the bearing mounting portion is in abutting cooperation with the stop convex edge of the bearing to axially limit the bearing. Therefore, the axial space of the housing is reduced, the processing difficulty of the housing is reduced, and the cost of the product is reduced.

[0007] In addition, the water pump in the above technical solution provided by the present invention may further have the following additional technical features:

[0008] In the above technical solution, the number of the bearing mounting portions is at least two, one of the bearing mounting portions is a first bearing mounting portion, the bearing hole and the thrust surface provided in the first bearing mounting portion are a first bearing hole and a first thrust surface; the housing includes a housing main body and a base connected to the housing main body, the first bearing mounting portion is provided on the housing main body; the bearing mounted at the first bearing mounting portion is a first bearing, the stop convex edge provided in the first bearing is a first stop convex edge, and the first stop convex edge is provided at an end of the first bearing away from the impeller.

[0009] This solution eliminates the stop step on the casing body, and utilizes the first thrust surface of the first bearing mounting portion to engage with the first stop convex edge of the first bearing to axially limit the first bearing close to the impeller, which can effectively prevent the first bearing from axially moving toward the impeller, and reduces the axial space of the casing body, reduces the processing difficulty of the casing body, and reduces the cost of the product.

[0010] In any of the above technical solutions, the motor includes a rotor assembly, which is sleeved on the rotating shaft and located in the shell body; a gasket is sleeved on the rotating shaft, and the gasket is located between the first bearing and the rotor assembly.

[0011] The spacer is provided between the first bearing and the rotor assembly to prevent rigid friction between the first bearing and the rotor assembly, thereby protecting the first shaft and the rotor assembly. The distance between the second bearing and the rotor assembly is relatively large, so there is no need to provide a spacer.

[0012] In any of the above technical solutions, the rotor assembly includes: a rotor, wherein a limiting structure is provided on the end surface of the rotor facing the gasket, and the limiting structure is used to limit the axial position of the gasket; and an elastic support member, clamped between the gasket and the end surface of the rotor, and used to elastically support the gasket.

[0013] An elastic support is added between the gasket and the end face of the rotor, and the matching mode between the gasket and the rotating shaft is changed to a clearance fit. Since the elastic support has a compressible and adjustable function, the gasket can float axially along the rotating shaft during operation, thereby avoiding rigid impact between the gasket and the first bearing, greatly improving the wear between the gasket and the first bearing, thereby reducing system noise, extending product life, and improving product work efficiency. At the same time, under the limitation of the limiting structure, the gasket cannot be tightly against the first bearing under the elastic force of the elastic support, which is conducive to reducing the axial extrusion force between the gasket and the first bearing, preventing excessive axial extrusion force between the gasket and the first bearing, and further improving the wear between the gasket and the first bearing, further reducing system noise, and further extending product life. In addition, the setting of the limiting structure can also prevent the elastic support from detaching from the rotor, thereby improving the stability and reliability of the product.

[0014] In any of the above technical solutions, the limiting structure includes: at least one first stop block, one end of the first stop block is connected to the end face of the rotor, and the other end of the first stop block is provided with a buckle, and the buckle is used to stop and cooperate with the end of the gasket away from the rotor; at least one second stop block, the second stop block and the first stop block are arranged at circumferential intervals along the end face.

[0015] The buckle of the first stop block is provided at one end of the first stop block away from the rotor and is used for abutting and cooperating with one end of the gasket away from the rotor. Then the gasket is clamped between the elastic support and the buckle. Under the blockage of the buckle, the gasket cannot cross the buckle along the rotating shaft, thereby restricting the axial position of the gasket. When the gasket is impacted by the first bearing, the gasket can compress the elastic support and move towards the rotor, thereby preventing rigid impact between the gasket and the first bearing. Moreover, it can also prevent the elastic support and the gasket from slipping out of the gap between the buckle and the rotor, improving the stability and reliability of the product. At the same time, the structure of the first stop block is relatively simple and the size is relatively small, which is beneficial to reducing the use of raw materials, lowering the product cost, and reducing the product weight.

[0016] The setting of the second stop block further limits the gasket and the elastic support. The second stop block cooperates with the first stop block to be able to limit the circumferential position of the gasket, which is beneficial to preventing the gasket from rotating relative to the rotor, thereby ensuring that the gasket rotates synchronously with the rotor. At the same time, it is also beneficial to prevent the elastic support from undergoing radial displacement, tilting, etc., improving the stability and reliability of the elastic support.

[0017] In any of the above technical solutions, the limiting structure includes at least one stop protrusion, and the stop protrusion is used for abutting and cooperating with one end of the gasket away from the rotor.

[0018] An elastic support is added between the end face of the gasket and the rotor. Since the elastic support has a compressible adjustment function, the gasket can undergo axial floating during the working process, thereby avoiding rigid impact between the gasket and the first bearing, greatly improving the wear condition between the gasket and the first bearing, further reducing the system noise, prolonging the product life, and improving the working efficiency of the product. At the same time, under the limitation of the stop protrusion of the limiting structure, the gasket cannot closely abut against the first bearing under the elastic force of the elastic support, which is beneficial to reducing the axial extrusion force between the gasket and the first bearing, preventing excessive axial extrusion force between the gasket and the first bearing, and further improving the wear condition between the gasket and the first bearing, further reducing the system noise, and further prolonging the product life. In addition, the setting of the limiting structure can also prevent the elastic support from detaching from the rotor, improving the stability and reliability of the product.

[0019] In the above technical solution, the limiting structure includes: an annular limiting part, one end of the annular limiting part is connected to the end face of the rotor, the other end of the annular limiting part is provided with at least one stop protrusion, and the annular limiting part is sleeved outside the gasket.

[0020] The stop protrusion is arranged at the end of the annular limiting part away from the rotor, and is used to stop and cooperate with the end of the gasket away from the rotor, so that the gasket is clamped between the elastic support member and the stop protrusion. Under the obstruction of the stop protrusion, the gasket cannot pass over the stop protrusion along the axial direction, thereby limiting the axial position of the gasket, and when the gasket is impacted by the first bearing, the gasket can compress the elastic support member and move toward the direction close to the rotor, thereby preventing the gasket and the first bearing from having a rigid impact. In addition, it can also prevent the elastic support member and the gasket from escaping from the gap between the stop protrusion and the rotor, thereby improving the stability and reliability of the product. At the same time, the annular limiting part can also limit the gasket and the elastic support member in the circumferential direction, which is conducive to preventing the gasket and the elastic support member from radial displacement, tilting, etc., and further improving the stability and reliability of the gasket and the elastic support member.

[0021] In the above technical solution, the gasket is provided with an avoidance gap for avoiding the stop protrusion, and the gasket is suitable for rotating relative to the annular limiting portion so that the avoidance gap and the stop protrusion are staggered; or, the annular limiting portion is provided with an anti-rotation portion, and the gasket includes a main body and a stop protrusion connected to the main body, and the anti-rotation portion and the stop protrusion are cooperated along the circumferential direction of the rotor to limit the rotation of the gasket relative to the rotor.

[0022] The gasket is provided with an avoidance notch, which can realize the interference-free assembly of the gasket, and is conducive to reducing the difficulty of gasket assembly, thereby improving the assembly efficiency. Specifically, during assembly, the avoidance notch of the gasket is aligned with the stop protrusion, the gasket is installed in the annular limiting portion, and then the gasket is rotated so that the avoidance notch of the gasket is staggered with the stop protrusion, and then the gasket is blocked by the stop protrusion, and the gasket cannot reversely cross the stop protrusion and escape from the annular limiting portion without any external force.

[0023] The cooperation between the anti-rotation part and the stop protrusion can prevent the gasket from rotating relative to the rotor during operation, causing it to disengage from the cooperation with the stop protrusion and fall out of the annular limiting part, thereby improving the stability and reliability of the gasket and the elastic support.

[0024] In any of the above technical solutions, the rotor assembly includes a rotor, and the rotor includes: a rotor core, the rotor core is provided with an axial hole for accommodating a rotating shaft and a receiving groove for installing a permanent magnet; a permanent magnet is arranged in the receiving groove; the casing at least covers the end surface of the rotor core to encapsulate the permanent magnet in the rotor core, and one end surface of the casing forms the end surface of the rotor facing the gasket; wherein the gasket is provided with a positioning structure for directly or indirectly positioning the position of the permanent magnet, and the gasket is fixed on the casing and is coaxially arranged with the rotor core.

[0025] The rotor core is sleeved on the rotating shaft, the permanent magnet is installed in the rotor core, the outer shell encapsulates the permanent magnet in the rotor core, and the limiting structure is arranged on the outer shell to limit the axial position of the gasket. By arranging a positioning structure on the gasket, the permanent magnet in the rotor core can be directly or indirectly positioned by the positioning structure, and the magnetization position of the permanent magnet can be accurately positioned according to the position of the permanent magnet, thereby improving the accuracy of the subsequent magnetization and ensuring that the permanent magnet is fully magnetized.

[0026] In addition, compared with setting a positioning structure on the outer shell, the size of the positioning structure on the gasket can be significantly reduced, or the outer contour of the gasket (such as the outer contour of a polygonal gasket) can be directly used as the positioning structure, thereby simplifying the design of the positioning structure and avoiding setting an additional positioning structure on the outer shell, thereby simplifying the structure of the outer shell and simplifying the processing technology of the outer shell.

[0027] In the above technical solution, the shell is a plastic body, which covers the part of the rotor core exposed to the axial hole and the gasket, and covers the part of the gasket exposed to the axial hole, and forms an integrated structure with the rotor core and the gasket.

[0028] In this technical solution, the outer shell is in the form of a plastic-encapsulated body. Since the plastic-encapsulated body wraps the part of the rotor core exposed to the shaft hole and the gasket, and covers the part of the gasket exposed to the shaft hole, it ensures that the rotor core can be stably and securely sealed inside the plastic-encapsulated body or inside the outer cover formed by the plastic-encapsulated body and the gasket, and will not shift or even fall out. It also ensures that the gasket will not shift or fall out, thereby improving the reliability of the motor. At the same time, it also eliminates tedious processes such as fastener fixing, which is conducive to simplifying the processing process and improving the preparation efficiency.

[0029] The rotating shaft may be injection molded together with the overmolded body, or may not be injection molded together with the overmolded body.

[0030] In the above technical solution, the plastic-encapsulated body includes an extension portion, which is arranged on the end surface of the plastic-encapsulated body and extends along the axial direction of the rotor, and the extension portion is annular and surrounds the rotating shaft.

[0031] An extension portion is provided on the end face of the plastic-encapsulated body. Since the extension portion extends along the axial direction of the rotor and surrounds the rotating shaft, it is equivalent to extending the axial matching length of the plastic-encapsulated body and the rotating shaft, which is beneficial to further prevent external gas or liquid from contacting the rotor core through the plastic-encapsulated body or even entering the inside of the rotor core, thereby improving the reliability of the product and improving the bonding strength between the plastic-encapsulated body and the rotating shaft.

[0032] In any of the above technical solutions, the housing includes a first end layer and a second end layer. The first end layer covers one end face of the rotor core and wraps a part of the gasket. The second end layer covers the other end face of the rotor core. The first end layer includes a first end portion and a second end portion. The first end portion and the second end portion are sequentially connected from inside to outside along the radial direction of the rotor. The diameter D2 of the outer contour of the first end portion is smaller than the diameter D3 of the outer contour of the second end portion. The first end portion wraps a part of the gasket and a part of the first end portion corresponds to the end face of the permanent magnet. The second end layer includes a third end portion and a fourth end portion. The third end portion and the fourth end portion are sequentially connected from outside to inside along the radial direction of the rotor. The diameter D4 of the outer contour of the third end portion is larger than the diameter D5 of the outer contour of the fourth end portion.

[0033] Since the external gas or liquid penetrates inward between the housing and the rotating shaft and then contacts or enters the rotor core, the part of the end face of the rotor core closer to the inside in the radial direction is more likely to be corroded. For this reason, in this solution, the two end layers of the housing are designed to have a non-uniform thickness structure. The first end portion and the fourth end portion closer to the inside in the radial direction are relatively thick, and the second end portion and the third end portion closer to the outside in the radial direction are relatively thin, which is equivalent to locally thickening the radial inner parts of the two end layers. This increases the distance between the part of the end face of the rotor core closer to the inside in the radial direction and the external gas or liquid, which is beneficial to preventing the external gas or liquid from entering the rotor core and corroding the rotor core. At the same time, compared with thickening the two end layers as a whole, it saves raw materials, reduces production costs, and also reduces the product weight. In addition, a part of the first end portion corresponds to the end face of the permanent magnet, which is beneficial to supporting the permanent magnet during injection molding and improving the stability of the position of the permanent magnet.

[0034] In any of the above technical solutions, the positioning structure includes the outer contour of the gasket; and / or the positioning structure includes recesses and / or protrusions provided on the gasket.

[0035] The shape of the outer contour of the gasket is reasonably designed according to the position of the permanent magnet. When assembling the gasket, the outer contour is made to have a corresponding relationship with the position of the permanent magnet groove. After the overmolding is completed, the position of the permanent magnet can be located according to the outer contour of the gasket. The structure and principle are relatively simple and easy to implement.

[0036] The number, shape, and position of the recesses, protrusions, or both recesses and protrusions are reasonably arranged according to the position of the permanent magnet. When assembling the gasket, these structures are made to have a corresponding relationship with the position of the permanent magnet groove. After the overmolding is completed, the position of the permanent magnet can be located according to the outer contour of the gasket. The structure and principle are relatively simple and easy to implement. In addition, when these recesses and protrusions are provided on the end face of the gasket facing away from the rotor core, the contact area between the gasket and other external structures can also be reduced, thereby improving heat generation due to friction.

[0037] In any of the above technical solutions, the number of the bearing mounting parts is at least two, one of the bearing mounting parts is the second bearing mounting part, and the bearing hole and the thrust surface provided on the second bearing mounting part are the second bearing hole and the second thrust surface; the housing includes a housing main body and a base connected to the housing main body, and the second bearing mounting part is provided on the base; the bearing mounted at the second bearing mounting part is the second bearing, and the retaining convex edge provided on the second bearing is the second retaining convex edge, and the second retaining convex edge is provided at one end of the second bearing close to the impeller.

[0038] This solution cancels the retaining step on the housing base, and uses the second thrust surface of the second bearing mounting part to be in abutting fit with the second retaining convex edge of the second bearing to axially limit the second bearing away from the impeller, which can effectively prevent the second bearing from axially moving away from the impeller, reduce the axial space of the base, reduce the machining difficulty of the base, and reduce the product cost.

[0039] In the above technical solution, the second bearing mounting part is a split bearing seat, the bearing seat includes n seat bodies, and the n seat bodies are arranged at intervals along the circumferential direction of the rotating shaft and enclose the second bearing hole; the rotating shaft is a hollow rotating shaft, and there is a water passage space between one end of the hollow rotating shaft away from the impeller and one end of the second bearing hole away from the impeller; a cooling chamber is provided in the housing, the housing is provided with a water passage hole communicating with the cooling chamber, the water passage hole communicates with the cooling chamber, and the cooling chamber communicates with the water passage space; a first partition plate and a second partition plate are provided in the housing, the first partition plate and the second partition plate are arranged opposite to each other along the radial direction of the rotating shaft and define a water passage, and both ends of the water passage communicate with the water passage space and the cooling chamber respectively.

[0040] The second bearing mounting part adopts a split bearing seat, that is: the bearing seat is not a complete columnar structure, but is split like a petal, and the second bearing hole is formed by roughly fitting together multiple spaced seat bodies to ensure the normal installation of the second bearing. Moreover, the split design makes the second bearing hole not a closed structure in the circumferential direction, but a structure with a gap, so that the water passage space in the second bearing hole can communicate with the cooling chamber in the housing. In this way, the liquid in the pump housing can enter the cooling chamber through the water passage hole, then enter the water passage space of the second bearing hole through the gap, and then flow back into the pump housing through the hollow space of the rotating shaft to form a cycle. This cycle can cool the control board on the side of the housing away from the pump housing and the structure in the housing, prevent the motor from overheating, and improve the use reliability of the motor.

[0041] The water passing channel is defined by the first partition plate and the second partition plate, which can play a good role in guiding the liquid, facilitating the liquid in the cooling chamber to quickly and accurately enter the water passing space of the second bearing hole, and then flowing out through the hollow rotating shaft, thereby improving the cooling efficiency.

[0042] Both the first partition plate and the second partition plate are arranged radially along the rotating shaft, arranged in a radial pattern, and the end of the water passing channel connecting the cooling chamber is relatively wide, while the end connecting the second bearing hole is relatively narrow. Since the volume of the cooling chamber is larger than the water passing space of the second bearing hole, such a setting is beneficial to increasing the liquid flow rate entering the water passing channel, facilitating the liquid in the cooling chamber to flow out quickly, and also beneficial to increasing the liquid flow velocity flowing out of the water passing channel, facilitating the liquid to quickly enter the water passing space and then enter the rotating shaft, thereby ensuring high cooling efficiency.

[0043] In the above technical solution, one end of the water passing channel communicating with the water passing space passes through the gap between adjacent seat bodies and extends into the water passing space; one end of the water passing channel communicating with the cooling chamber penetrates the chamber wall of the cooling chamber and extends into the cooling chamber. The number of cooling chambers is multiple, and the multiple cooling chambers are arranged at intervals along the circumferential direction of the rotating shaft. Reinforcing ribs are provided between adjacent cooling chambers; the number of cooling chambers is equal to the number of seat bodies, and the cooling chambers and the seat bodies are arranged alternately along the circumferential direction of the rotating shaft; the number of water passing holes is multiple, and any one cooling chamber communicates with at least one water passing hole.

[0044] In this solution, the water passing channel directly extends into the water passing space of the second bearing hole, which is beneficial to ensuring that the liquid completely enters the water passing space of the second bearing hole and will not leak at the gap between adjacent seat bodies, thereby improving the utilization rate of the liquid and the cooling efficiency.

[0045] The water passing channel directly extends into the cooling chamber, which is beneficial to ensuring that the liquid completely passes through the water passing channel and enters the water passing space of the second bearing hole and will not leak at the chamber wall of the cooling chamber, thereby improving the utilization rate of the liquid and the cooling efficiency.

[0046] Multiple cooling chambers are arranged at intervals along the circumferential direction of the rotating shaft, which is convenient for efficiently cooling the structures at various circumferential parts inside the casing and the circumferential parts of the control board, thereby improving the cooling efficiency and cooling uniformity. The setting of the reinforcing ribs is beneficial to improving the strength of each cooling chamber.

[0047] If the number of cooling chambers is equal to the number of seat bodies, then the number of cooling chambers is also equal to the number of gaps between bearing seats and the number of water passing channels, which facilitates the correspondence between one cooling chamber and one water passing channel, thereby ensuring that the liquid outflow speeds of each cooling chamber are approximately the same, making the liquid temperatures of each cooling chamber approximately the same, and thus being conducive to improving the cooling uniformity.

[0048] The cooling chambers and seat bodies are distributed alternately along the circumferential direction of the rotating shaft. Then, the gaps and water passing channels between adjacent seat bodies are exactly arranged corresponding to the cooling chambers, which is conducive to reducing the length of the water passing channels, simplifying the structure of the product, and thus saving production costs.

[0049] By adopting multiple water passing holes, multi-channel water inlet can be realized, and any cooling chamber is communicated with at least one water passing hole, ensuring that each cooling chamber can quickly intake water, thereby ensuring the cooling efficiency and cooling uniformity.

[0050] In any of the above technical solutions, a chamfer is provided at the bearing mounting portion, and the chamfer is located between the thrust surface and the bearing hole.

[0051] Setting a chamfer between the thrust surface and the bearing hole can play a guiding role in the assembly of the bearing, facilitating the bearing to be quickly and accurately inserted into the bearing hole, thereby improving the assembly efficiency of the product.

[0052] In any of the above technical solutions, one end of the first bearing close to the impeller is hidden inside the housing.

[0053] One end of the first bearing close to the impeller is hidden inside the housing, that is, it does not protrude from the end face of the housing facing the pump housing. This can prevent interference between the first bearing and the structures inside the pump housing, and also will not interfere with the flow of the liquid, while ensuring the stable support of the first bearing for the rotating shaft.

[0054] The technical solution of the second aspect of the present invention provides a vehicle, including: a vehicle body; and a water pump as described in any one of the technical solutions of the first aspect, which is installed in the vehicle body.

[0055] The vehicle provided by the technical solution of the second aspect of the present invention includes the water pump described in the technical solution of the first aspect, and thus has all the beneficial effects of any of the above technical solutions, which will not be elaborated here.

[0056] The additional aspects and advantages of the present invention will become obvious in the following description part, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0058] Figure 1 It is a schematic cross-sectional structure diagram of a water pump according to some embodiments of the present invention;

[0059] Figure 2 is Figure 1 a schematic partial structure diagram of the water pump shown;

[0060] Figure 3 is Figure 1 a schematic structure diagram of the housing main body of the middle housing in;

[0061] Figure 4 It is a schematic top view structure diagram of a base according to some embodiments of the present invention;

[0062] Figure 5 It is a schematic structure diagram of a rotor assembly according to Embodiment 1 of the present invention;

[0063] Figure 6 is Figure 5 a schematic partial structure diagram of the rotor assembly shown;

[0064] Figure 7 It is a schematic structure diagram of a rotor assembly according to Embodiment 2 of the present invention;

[0065] Figure 8 It is a schematic structure diagram of a rotor assembly according to Embodiment 3 of the present invention;

[0066] Figure 9 is Figure 8 a schematic partial structure diagram of the rotor assembly shown;

[0067] Figure 10 It is a schematic cross-sectional view of a rotor assembly according to Embodiment 4 of the present invention;

[0068] Figure 11 It is another schematic cross-sectional view of a rotor assembly according to another embodiment of the present invention;

[0069] Figure 12 It is a schematic three-dimensional structure diagram of a gasket according to some embodiments of the present invention;

[0070] Figure 13 It is a schematic three-dimensional structure diagram of a gasket according to some embodiments of the present invention;

[0071] Figure 14 It is a schematic block diagram of a vehicle according to some embodiments of the present invention.

[0072] Among them, Figures 1 to 14 the corresponding relationship between the reference numerals and the component names in is:

[0073] 1 housing, 151 first bearing, 1511 first stop convex edge, 152 second bearing, 1521 second stop convex edge, 17 housing body, 171 first bearing mounting portion, 172 first bearing hole, 173 first thrust surface, 174 chamfer, 18 base, 181 second bearing mounting portion, 182 second bearing hole, 183 second thrust surface, 184 seat body, 185 water passage, 1851 first partition, 1852 second partition, 186 cooling chamber, 1861 chamber wall, 187 reinforcing rib, 188 water passage space;

[0074] 2 pump housing;

[0075] 25 abutting bump;

[0076] 3 impeller;

[0077] 311 shaft hole, 34 limiting structure, 341 first stop block, 3411 buckle, 3412 guiding inclined surface, 3413 stop surface, 342 second stop block, 343 annular limiting portion, 3432 stop projection, 3433 anti-rotation portion, 3434 accommodation space, 35 elastic support member;

[0078] 4 stator assembly;

[0079] 5 rotor assembly, 51 rotating shaft, 52 gasket, 521 avoidance notch, 522 side peripheral surface, 524 recess;

[0080] 53 rotor core, 535 accommodation groove;

[0081] 541 filling portion, 542 clearance portion, 543 first end layer, 5431 first end, 54311 protruding portion, 54312 supporting portion, 5432 second end, 544 second end layer, 5441 third end, 5442 fourth end, 545 extending portion, 546 plastic-coated body;

[0082] 55 permanent magnet;

[0083] 6 control assembly, 61 control board, 62 cover plate;

[0084] 100 vehicle, 102 vehicle body, 104 water pump, 1042 motor, 1044 hydraulic assembly. Detailed implementation manners

[0085] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0086] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0087] Reference will now be made to Figures 1 to 14 the water pump and the vehicle described in some embodiments of the present invention.

[0088] As Figure 1 shown, the water pump 104 provided by an embodiment of the first aspect of the present invention includes: a motor 1042 and a hydraulic assembly 1044.

[0089] Specifically, the motor 1042 includes a housing 1 and a rotating shaft 51, as Figure 2 shown.

[0090] The hydraulic assembly 1044 includes an impeller 3, and the impeller 3 is connected to the rotating shaft 51, as Figure 1 shown. The hydraulic assembly 1044 further includes a pump housing 2, the pump housing 2 is fixedly connected to the housing 1, and the impeller 3 is disposed inside the pump housing 2.

[0091] Among them, as Figure 1 shown, the housing 1 is provided with at least one bearing mounting portion (which can be understood specifically with reference to the first bearing mounting portion 171 and the second bearing mounting portion 181). The bearing mounting portion is provided with a bearing hole (which can be understood specifically with reference to the first bearing hole 172 and the second bearing hole 182) and a thrust surface (which can be understood specifically with reference to the first thrust surface 173 and the second thrust surface 183). A bearing (which can be understood specifically with reference to the first bearing 151 and the second bearing 152) is installed at the bearing mounting portion, and the rotating shaft 51 passes through the bearing (which can be understood specifically with reference to the first bearing 151 and the second bearing 152). The bearing is provided with a stop convex edge (which can be understood specifically with reference to the first stop convex edge 1511 and the second stop convex edge 1521). The stop convex edge is in abutting cooperation with the thrust surface (which can be understood specifically with reference to the first thrust surface 173 and the second thrust surface 183) to axially limit the bearing.

[0092] The water pump 104 provided by an embodiment of the first aspect of the present invention cancels the stop step on the housing 1 of the water pump 104, and uses a bearing with a stop convex edge for cooperation, and uses the thrust surface of the bearing mounting portion to abut against the stop convex edge of the bearing to axially limit the bearing, thereby reducing the axial space of the housing 1, reducing the processing difficulty of the housing 1, and reducing the cost of the product.

[0093] In some embodiments, the number of bearing mounting portions is at least two. One of the bearing mounting portions is the first bearing mounting portion 171, as Figure 2 and Figure 3As shown. The bearing holes and thrust surfaces provided on the first bearing mounting portion 171 are the first bearing hole 172 and the first thrust surface 173. The housing 1 includes a housing main body 17 and a base 18 connected to the housing main body 17, as Figure 1 shown. The first bearing mounting portion 171 is provided on the housing main body 17, as Figure 2 and Figure 3 shown. The bearing mounted at the first bearing mounting portion 171 is the first bearing 151. The stop flange provided on the first bearing 151 is the first stop flange 1511. The first stop flange 1511 is provided at one end of the first bearing 151 away from the impeller 3, as Figure 1 shown.

[0094] In this solution, the stop step on the housing main body 17 of the housing 1 is cancelled. The first thrust surface 173 of the first bearing mounting portion 171 is used for anti - abutment cooperation with the first stop flange 1511 of the first bearing 151 to axially limit the first bearing 151 close to the impeller 3, which can effectively prevent the first bearing 151 from axially moving towards the direction close to the impeller 3, reduce the axial space of the housing main body 17, lower the processing difficulty of the housing main body 17, and reduce the cost of the product.

[0095] In some embodiments, the number of bearing mounting portions is at least two. One of the bearing mounting portions is the second bearing mounting portion 181, as Figure 1 shown. The bearing holes and thrust surfaces provided on the second bearing mounting portion 181 are the second bearing hole 182 and the second thrust surface 183, as Figure 1 shown. The housing 1 includes a housing main body 17 and a base 18 connected to the housing main body 17. The second bearing mounting portion 181 is provided on the base 18. The bearing mounted at the second bearing mounting portion 181 is the second bearing 152. The stop flange provided on the second bearing 152 is the second stop flange 1521, as Figure 1 shown. The second stop flange 1521 is provided at one end of the second bearing 152 close to the impeller 3.

[0096] In this solution, the stop step on the base 18 of the housing 1 is cancelled. The second thrust surface 183 of the second bearing mounting portion 181 is used for anti - abutment cooperation with the second stop flange 1521 of the second bearing 152 to axially limit the second bearing 152 away from the impeller 3, which can effectively prevent the second bearing 152 from axially moving towards the direction away from the impeller 3, reduce the axial space of the base 18, lower the processing difficulty of the base 18, and reduce the cost of the product.

[0097] Furthermore, the second bearing mounting portion 181 is a split - type bearing seat. The bearing seat includes n seat bodies 184, as Figure 4 shown. The n seat bodies 184 are arranged at intervals along the circumferential direction of the rotating shaft 51 and enclose the second bearing hole 182. The rotating shaft 51 is a hollow rotating shaft 51, asFigure 1 As shown, there is a water passage space 188 between one end of the hollow rotating shaft 51 far from the impeller 3 and one end of the second bearing hole 182 far from the impeller 3, as Figure 1 shown. A cooling chamber 186 is provided in the housing 1, as Figure 4 shown. The housing 1 is provided with a water passage hole communicating with the cooling chamber 186. The water passage hole communicates with the cooling chamber 186, and the cooling chamber 186 communicates with the water passage space 188.

[0098] The second bearing mounting portion 181 adopts a split bearing seat, that is: the bearing seat is not a complete cylindrical structure, but is split like a petal, and is formed by a plurality of spaced seat bodies 184 roughly pieced together to form the second bearing hole 182, ensuring the normal installation of the second bearing 152. Moreover, the split design makes the second bearing hole 182 not a closed structure in the circumferential direction, but a structure with a gap. Therefore, the water passage space 188 in the second bearing hole 182 can communicate with the cooling chamber 186 in the housing 1. In this way, the liquid in the pump housing 2 can enter the cooling chamber 186 through the water passage hole, then enter the water passage space 188 of the second bearing hole 182 through the gap, and then flow back into the pump housing 2 through the hollow space of the rotating shaft 51 to form a cycle. This cycle can cool the control board 61 on the side of the housing 1 far from the pump housing 2 and the structures in the housing 1, prevent the motor 1042 from overheating, and improve the service reliability of the motor 1042.

[0099] Furthermore, a first partition 1851 and a second partition 1852 are provided in the housing 1, as Figure 4 shown. The first partition 1851 and the second partition 1852 are arranged opposite to each other and define a water passage 185, as Figure 4 shown. The two ends of the water passage 185 communicate with the water passage space 188 and the cooling chamber 186 respectively.

[0100] By using the first partition 1851 and the second partition 1852 to define the water passage 185, it can play a good role in guiding the liquid, facilitating the liquid in the cooling chamber 186 to quickly and accurately enter the water passage space 188 of the second bearing hole 182, and then flow out through the hollow rotating shaft 51, thereby improving the cooling efficiency.

[0101] Among them, one end of the water passage 185 communicating with the water passage space 188 passes through the gap between adjacent seat bodies 184, as Figure 4 shown, and extends into the water passage space 188.

[0102] In this solution, the water passage 185 directly extends into the water passage space 188 of the second bearing hole 182. This is beneficial to ensuring that the liquid completely enters the water passage space 188 of the second bearing hole 182 without leakage at the gap between adjacent seat bodies 184, thereby improving the utilization rate of the liquid and the cooling efficiency.

[0103] Further, one end of the water passage 185 communicating with the cooling chamber 186 penetrates through the chamber wall 1861 of the cooling chamber 186, as Figure 4 shown, and extends into the cooling chamber 186.

[0104] In this solution, the water passage 185 directly extends into the cooling chamber 186, which is beneficial to ensuring that the liquid completely passes through the water passage 185 and enters the water passage space 188 of the second bearing hole 182, without leakage occurring at the chamber wall 1861 of the cooling chamber 186, thereby improving the utilization rate of the liquid and the cooling efficiency.

[0105] Specifically, both the first partition plate 1851 and the second partition plate 1852 are arranged along the radial direction of the rotating shaft 51, as Figure 4 shown.

[0106] Both the first partition plate 1851 and the second partition plate 1852 are arranged along the radial direction of the rotating shaft 51, arranged in a radial pattern, and one end of the water passage 185 connecting to the cooling chamber 186 is relatively wide, while the end connecting to the second bearing hole 182 is relatively narrow. Since the volume of the cooling chamber 186 is larger than the water passage space 188 of the second bearing hole 182, such a setting is beneficial to both increasing the liquid flow rate entering the water passage 185 and facilitating the rapid outflow of the liquid in the cooling chamber 186, and increasing the liquid flow velocity flowing out of the water passage 185 and facilitating the liquid to quickly enter the water passage space 188 and then enter the rotating shaft 51, thereby ensuring high cooling efficiency.

[0107] Wherein, the angle α formed by the first partition plate 1851 and the second partition plate 1852 is less than or equal to 180° / n.

[0108] Limiting the angle α formed by the first partition plate 1851 and the second partition plate 1852 within the range of less than or equal to 180° / n avoids excessive gaps between adjacent seat bodies 184, which may affect the strength of the bearing seat or cause the second bearing hole 182 to deviate too much from a circular shape, thereby affecting the normal installation and use of the second bearing 152.

[0109] In any of the above embodiments, further, the number of cooling chambers 186 is multiple, as Figure 4 shown. The multiple cooling chambers 186 are arranged at intervals along the circumferential direction of the rotating shaft 51. A reinforcing rib 187 is provided between adjacent cooling chambers 186, as Figure 4 shown.

[0110] A plurality of cooling chambers 186 are circumferentially arranged at intervals along the rotating shaft 51, which facilitates efficient cooling of the structures at various circumferential parts inside the casing 1 and the circumferential parts of the control board 61, thereby improving the cooling efficiency and cooling uniformity. The arrangement of the reinforcing ribs 187 is beneficial to improving the strength of each cooling chamber 186.

[0111] In one embodiment, specifically, the number of the cooling chambers 186 is equal to the number of the seat bodies 184, as Figure 4 shown.

[0112] If the number of the cooling chambers 186 is equal to the number of the seat bodies 184, then the number of the cooling chambers 186 is also equal to the number of the gaps of the bearing seats and is also equal to the number of the water passing channels 185, which is convenient for one cooling chamber 186 to correspond to one water passing channel 185, so as to ensure that the liquid outflow speeds of the respective cooling chambers 186 are substantially equivalent, making the liquid temperatures of the respective cooling chambers 186 also substantially equivalent, thereby being beneficial to improving the cooling uniformity.

[0113] Among them, the cooling chambers 186 and the seat bodies 184 are staggeredly distributed along the circumferential direction of the rotating shaft 51, as Figure 4 shown.

[0114] If the cooling chambers 186 and the seat bodies 184 are staggeredly distributed along the circumferential direction of the rotating shaft 51, then the gaps between the adjacent seat bodies 184 and the water passing channels 185 are exactly arranged corresponding to the cooling chambers 186, which is thus beneficial to reducing the length of the water passing channels 185, simplifying the structure of the product, and thereby saving the production cost.

[0115] Furthermore, the number of the water passing holes is multiple, and any one of the cooling chambers 186 is communicated with at least one water passing hole.

[0116] Adopting multiple water passing holes can achieve multi-channel water inlet, and any one of the cooling chambers 186 is communicated with at least one water passing hole, ensuring that each cooling chamber 186 can quickly intake water, thereby ensuring the cooling efficiency and cooling uniformity.

[0117] In any of the above embodiments, the rotating shaft 51 is in clearance fit with the bearing.

[0118] The rotating shaft 51 is in clearance fit with the bearing. Specifically, the rotating shaft 51 is in clearance fit with the first bearing 151, and the rotating shaft 51 is in clearance fit with the second bearing 152, which is convenient for the assembly between the rotating shaft 51 and the bearing.

[0119] In any of the above embodiments, the bearing mounting portion is provided with a chamfer 174, as Figure 3 shown. The chamfer 174 is located between the thrust surface and the bearing hole.

[0120] A chamfer 174 is provided between the thrust surface and the bearing hole, which can play a guiding role in the assembly of the bearing, facilitating the rapid and accurate insertion of the bearing into the bearing hole, thereby improving the assembly efficiency of the product.

[0121] In any of the above embodiments, one end of the first bearing 151 close to the impeller 3 is hidden inside the housing 1, as Figure 2 shown.

[0122] One end of the first bearing 151 close to the impeller 3 is hidden inside the housing 1, that is, it does not protrude from the end face of the housing 1 facing the pump housing 2, which can prevent interference between the first bearing 151 and the structure inside the pump housing 2, and will not interfere with the flow of the liquid, while ensuring the stable support of the first bearing 151 for the rotating shaft 51.

[0123] In any of the above embodiments, the motor 1042 includes a rotor assembly 5, as Figure 1 shown. The rotor assembly 5 is sleeved on the rotating shaft 51 and is located inside the housing body 17. A gasket 52 is sleeved on the rotating shaft 51, as Figure 1 shown, and the gasket 52 is located between the first bearing 151 and the rotor assembly 5.

[0124] Sleeving a gasket 52 between the first bearing 151 and the rotor assembly 5 can prevent rigid friction between the first bearing 151 and the rotor assembly 5, thereby protecting the first rotating shaft 51 and the rotor assembly 5. The distance between the second bearing 152 and the rotor assembly 5 is relatively large, so there is no need to set a gasket 52.

[0125] Furthermore, the motor 1042 includes a stator assembly 4 and a control assembly 6. The stator assembly 4 is sleeved outside the rotor assembly 5. The control assembly 6 includes a control board 61 and a cover plate 62. The control assembly 6 is arranged on the side of the base 18 away from the housing body 17, and the control board 61 is fixedly connected to the base 18.

[0126] The rotor includes: a rotor core 53, a permanent magnet 55, and a housing. The rotor core 53 is provided with a shaft hole 311 for accommodating the rotating shaft and a receiving groove 535 for mounting the permanent magnet 55; the permanent magnet 55 is arranged in the receiving groove 535; the housing covers at least the end face of the rotor core 53 to encapsulate the permanent magnet 55 inside the rotor core 53, and one end face of the housing forms the end face of the rotor facing the gasket.

[0127] The rotor includes a rotor core 53, a permanent magnet 55, and a housing. The rotor core 53 is sleeved on the rotating shaft, the permanent magnet 55 is installed inside the rotor core 53, the housing encapsulates the permanent magnet 55 inside the rotor core 53, and a limiting structure is arranged on the housing to realize the axial position limitation of the gasket.

[0128] Among them, the housing is a plastic-coated body 546, the plastic-coated body 546 covers the rotor core, and the limiting structure and the plastic-coated body are of an integral structure.

[0129] The end face of the rotor facing the gasket 52 is provided with a limiting structure 34, such as Figure 1 shown. The limiting structure 34 is used to limit the axial position of the gasket 52.

[0130] The elastic support member 35 is clamped between the end face of the gasket 52 and the rotor, such as Figure 5 shown, and is used to elastically support the gasket 52.

[0131] An elastic support member 35 is added between the end face of the gasket 52 and the rotor. Since the elastic support member 35 has a compressible adjustment function, the gasket 52 can axially float during operation, thereby avoiding rigid impact between the gasket 52 and the first bearing 151, greatly improving the wear condition between the gasket 52 and the first bearing 151, further reducing the system noise, extending the product life, and improving the working efficiency of the product.

[0132] At the same time, under the limitation of the limiting structure 34, the gasket 52 cannot be in close contact with the first bearing 151 under the elastic force of the elastic support member 35, which is beneficial to reducing the axial extrusion force between the gasket 52 and the first bearing 151, preventing excessive axial extrusion force between the gasket 52 and the first bearing 151, further improving the wear condition between the gasket 52 and the first bearing 151, further reducing the system noise, and further extending the product life.

[0133] In addition, the setting of the limiting structure 34 can also prevent the elastic support member 35 from detaching from the rotor, improving the stability and reliability of the product.

[0134] It can be understood that the material of the gasket can be but is not limited to ceramics, metals, alloys, etc.

[0135] Some embodiments will be introduced below with reference to the accompanying drawings.

[0136] Embodiment 1

[0137] The limiting structure 34 includes: at least one first stop block 341, such as Figure 5 and Figure 6 shown. One end of the first stop block 341 is connected to the end face of the rotor, and a stop protrusion 3432 is provided at the other end of the first stop block 341. The stop protrusion 3432 is configured as a buckle 3411, such as Figure 5 shown. The buckle 3411 is used for anti-stop cooperation with the end of the gasket 52 facing away from the rotor.

[0138] The buckle 3411 of the first stopper 341 is arranged at the end of the first stopper 341 away from the rotor, and is used to stop and cooperate with the end of the gasket 52 away from the rotor, so that the gasket 52 is clamped between the elastic support member 35 and the buckle 3411. Under the obstruction of the buckle 3411, the gasket 52 cannot pass through the buckle 3411 along the axial direction, thereby limiting the axial position of the gasket 52. When the gasket 52 is impacted by the first bearing 151, the gasket 52 can compress the elastic support member 35 and move toward the direction close to the rotor, thereby preventing a rigid impact between the gasket 52 and the first bearing 151.

[0139] Furthermore, it can also prevent the elastic support member 35 and the gasket 52 from escaping from the gap between the buckle 3411 and the rotor, thereby improving the stability and reliability of the product.

[0140] At the same time, the first stopper 341 has a relatively simple structure and a relatively small size, which is beneficial to reducing the use of raw materials, reducing product costs, and reducing product weight.

[0141] Specifically, the buckle 3411 includes a guide slope 3412 and a stop surface 3413. Figure 6 As shown, the guide slope 3412 is used to guide the gasket 52 to pass over the buckle 3411, and the stop surface 3413 is used to stop and cooperate with the gasket 52. During the assembly process, the gasket 52 can pass over the buckle 3411 along the guide slope 3412 of the buckle 3411, and then enter the space between the buckle 3411 and the rotor. Under the obstruction of the stop surface 3413 of the buckle 3411, the gasket 52 cannot reversely pass over the buckle 3411 and fall out.

[0142] Furthermore, when there are multiple first stoppers 341, the multiple first stoppers 341 are spaced apart along the circumference of the rotor, such as Figure 6 This is beneficial to the balanced force of the gasket 52, thereby improving the stability and reliability of the gasket 52.

[0143] Furthermore, the limiting structure 34 further includes: at least one second stopper 342, such as Figure 5 and Figure 6 The second stopper 342 and the first stopper 341 are arranged at intervals along the circumferential direction of the end surface.

[0144] The second stopper 342 is provided to further limit the position of the gasket 52 and the elastic support member 35. The second stopper 342 cooperates with the first stopper 341 to limit the circumferential position of the gasket 52, which is beneficial to prevent the gasket 52 from rotating relative to the rotor, thereby ensuring that the gasket 52 and the rotor rotate synchronously; at the same time, it is also beneficial to prevent the elastic support member 35 from radial displacement, tilting, etc., and improve the stability and reliability of the elastic support member 35.

[0145] There are multiple first stops 341 , the number of second stops 342 is equal to the number of first stops 341 , and the multiple first stops 341 and the multiple second stops 342 are staggeredly distributed one by one along the circumferential direction of the end surface.

[0146] The rotor includes a rotor core and a permanent magnet. Specifically, the rotor core is provided with an axial hole 311 (such as Figure 6 as shown) and a receiving slot for mounting a permanent magnet.

[0147] Embodiment 2

[0148] The limiting structure 34 includes: an annular limiting portion 343, such as Figure 7 One end of the annular limiting portion 343 is connected to the end surface of the rotor, and the other end of the annular limiting portion 343 is provided with at least one stop protrusion 3432, as shown in FIG. Figure 7 As shown, the annular limiting portion 343 is sleeved on the outer side of the gasket 52 .

[0149] The stop protrusion 3432 is arranged at the end of the annular limiting portion 343 away from the rotor, and is used to stop and cooperate with the end of the gasket 52 away from the rotor, so that the gasket 52 is clamped between the elastic support member 35 and the stop protrusion 3432. Under the obstruction of the stop protrusion 3432, the gasket 52 cannot pass through the stop protrusion 3432 along the axial direction, thereby limiting the axial position of the gasket 52. When the gasket 52 is impacted by the first bearing 151, the gasket 52 can compress the elastic support member 35 and move toward the direction close to the rotor, thereby preventing a rigid impact between the gasket 52 and the first bearing 151.

[0150] Furthermore, it can also prevent the elastic support member 35 and the gasket 52 from escaping from the gap between the stop protrusion 3432 and the rotor, thereby improving the stability and reliability of the product.

[0151] At the same time, the annular limiting portion 343 can also provide circumferential limitation to the gasket 52 and the elastic support member 35, which is beneficial to prevent the gasket 52 and the elastic support member 35 from radial displacement, tilting, etc., and further improves the stability and reliability of the gasket 52 and the elastic support member 35.

[0152] Furthermore, the gasket 52 is provided with an avoidance notch 521 for avoiding the stop protrusion 3432. Figure 7 The gasket 52 is adapted to rotate relative to the annular limiting portion 343 so that the avoidance notch 521 and the stop protrusion 3432 are staggered.

[0153] The avoidance notch 521 is provided on the gasket 52, so that the gasket 52 can be assembled without interference, which is conducive to reducing the difficulty of assembling the gasket 52, thereby improving the assembly efficiency. Specifically, during assembly, the avoidance notch 521 of the gasket 52 is aligned with the stop protrusion 3432, the gasket 52 is installed in the annular limiting portion 343, and then the gasket 52 is rotated so that the avoidance notch 521 of the gasket 52 is staggered with the stop protrusion 3432, and then the gasket 52 is blocked by the stop protrusion 3432, and the gasket 52 cannot reversely cross the stop protrusion 3432 and escape from the annular limiting portion 343 without any external force.

[0154] Of course, the avoidance notch 521 may be eliminated, and the gasket 52 may be assembled by applying external force to squeeze and pass over the stop protrusion 3432 .

[0155] Embodiment 3

[0156] The limiting structure 34 includes: an annular limiting portion 343, such as Figure 8 and Figure 9 One end of the annular limiting portion 343 is connected to the end surface of the rotor, and the other end of the annular limiting portion 343 is provided with at least one stop protrusion 3432, as shown in FIG. Figure 8 As shown, the annular limiting portion 343 is sleeved on the outer side of the gasket 52 , and the stop protrusion 3432 is used to stop and cooperate with the end of the gasket 52 away from the rotor 3 .

[0157] At the same time, the annular limiting portion 343 can also provide circumferential limitation to the gasket 52 and the elastic support member 35, which is beneficial to prevent the gasket 52 and the elastic support member 35 from radial displacement, tilting, etc., and further improves the stability and reliability of the gasket 52 and the elastic support member 35.

[0158] Furthermore, the annular limiting portion 343 is provided with an anti-rotation portion 3433, such as Figure 8 and Figure 9 As shown. The gasket 52 is provided with a stop protrusion 25, as shown Figure 8 The anti-rotation portion 3433 and the stop protrusion 25 are engaged with each other along the circumferential direction of the rotor to limit the rotation of the gasket 52 relative to the rotor.

[0159] The cooperation between the anti-rotation portion 3433 and the stop protrusion 25 can prevent the gasket 52 from rotating relative to the rotor during operation, causing it to disengage from the cooperation with the stop protrusion 3432 and fall out of the annular limiting portion 343, thereby improving the stability and reliability of the gasket 52 and the elastic support member 35.

[0160] Furthermore, the anti-rotation portion 3433 is connected to one end of the stop protrusion 3432 and is surrounded to form a receiving space 3434. Figure 9As shown, the abutting bump 25 is adapted to rotate into or out of the accommodation space 3434, and the stop projection 3432 is in abutting cooperation with the abutting bump 25.

[0161] Embodiment 4

[0162] On the basis of any of the above embodiments, further, the gasket 52 is provided with a positioning structure for directly or indirectly positioning the permanent magnet 55, and the gasket 52 is fixed on the housing and coaxially arranged with the rotor core 53.

[0163] By providing a positioning structure on the gasket 52, the permanent magnet 55 in the rotor core 53 can be directly or indirectly positioned by using the positioning structure. Then, the magnetization position of the permanent magnet 55 can be accurately positioned according to the position of the permanent magnet 55, thereby improving the accuracy of subsequent magnetization and ensuring that the permanent magnet 55 is fully magnetized.

[0164] In addition, compared with providing a positioning structure on the housing, the size of the positioning structure on the gasket 52 can be significantly reduced, or the outer contour of the gasket 52 (such as the outer contour of a polygonal gasket 52) can be directly used as the positioning structure, thereby simplifying the design of the positioning structure and avoiding additionally providing a positioning structure on the housing, thus simplifying the structure of the housing and the processing technology of the housing.

[0165] Among them, the housing can be a plastic-coated body 546, stainless steel or a plastic frame, etc., all of which can shield the permanent magnet 55 and encapsulate the permanent magnet 55 in the rotor core 53. The stainless steel housing can be connected by welding or other means. The rotating shaft can be a hollow shaft with an inner shaft hole provided therein.

[0166] Specifically, the housing is a plastic-coated body 546, and the plastic-coated body 546 covers the parts of the rotor core 53 exposed outside the shaft hole 311 and outside the gasket 52, and covers a part of the gasket 52 exposed outside the shaft hole 311, and forms an integral structure with the rotor core 53 and the gasket 52.

[0167] Among them, a part of the plastic-coated body 546 forms a filling part 541, and a part of the plastic-coated body 546 fills the clearance groove in the rotor core 53 to form a clearance part 542.

[0168] The outer shell is in the form of a plastic-coated body 546. Since the plastic-coated body 546 wraps the parts of the rotor core 53 exposed to the shaft hole 311 and the gasket 52 (i.e., the parts of the rotor core 53 that do not contact the rotating shaft and the gasket 52) and covers a part of the gasket 52 exposed to the shaft hole 311, it ensures that the rotor core 53 can be stably and reliably sealed inside the plastic-coated body 546 or inside the outer shell jointly formed by the plastic-coated body 546 and the gasket 52, preventing situations such as displacement or even detachment. It also ensures that the gasket 52 will not shift or come out, improving the reliability of the motor during use. At the same time, it eliminates cumbersome processes such as fixing with fasteners, which is beneficial to simplifying the processing procedures and improving the preparation efficiency.

[0169] Furthermore, the plastic-coated body 546, the rotating shaft 51, the gasket 52, and the rotor core 53 form an integral structure. That is to say, the rotating shaft 51 is injection-molded together with the plastic-coated body 546.

[0170] During the production process, first, the rotor core 53 and the gasket 52 are sleeved on the rotating shaft 51, and the gasket 52 is installed in the receiving groove 535 with a certain relative positional relationship. Then, the permanent magnet 55 is placed, and then it is put into a mold and injected with liquid plastic for injection molding. After the liquid plastic solidifies into the plastic-coated body 546, an integrally formed rotor sealed by injection molding can be obtained. The rotating shaft, the rotor core 53, the gasket 52, and the plastic-coated body 546 form an integral structure, and the rotating shaft 51 and the rotor core 53 cannot move relative to each other, with high bonding strength and reliable fixation.

[0171] Of course, the rotating shaft 51 and the plastic-coated body 546 may not be injection-molded together, in which case the rotating shaft 51 and the rotor core 53 can move relative to each other. The outer shell is not limited to the plastic-coated body 546 and can also be in the form of stainless steel, a plastic frame, etc.

[0172] Specifically, the positioning structure can be completely exposed outside the plastic-coated body 546 or only partially exposed outside the plastic-coated body 546. For example: the positioning structure is the side peripheral surface 522 of the gasket 52, and the contour of the side peripheral surface 522 is polygonal. Then, a part of the side peripheral surface 522 of the gasket 52 can be covered by the plastic-coated body 546, and a part can protrude from the plastic-coated body 546, thus playing a positioning role. At this time, the positioning structure is partially exposed outside the plastic-coated body 546.

[0173] Or, the positioning structure is a protrusion on the end face of the gasket 52 facing away from the rotor core 53, and the protrusion is completely exposed outside the plastic-coated body 546. At this time, the positioning structure is completely exposed outside the plastic-coated body 546.

[0174] Among them, the permanent magnet 55 also refers to a magnetic steel. Particularly preferably, the permanent magnet 55 is based on a permanent magnetic material, such as a Fe-Ni-Co permanent magnet 55. The permanent magnet 55 can be installed in the rotor core 53 by means of gluing or being supported by a thimble.

[0175] Further, the plastic-coated body 546 includes an extension portion 545, as Figure 10 shown. The extension portion 545 is provided on the end face of the plastic-coated body 546 and extends along the axial direction of the rotor, as Figure 10 shown, and the extension portion 545 is annular and surrounds the rotating shaft.

[0176] By providing the extension portion 545 on the end face of the plastic-coated body 546, since the extension portion 545 extends along the axial direction of the rotor and surrounds the rotating shaft, it is equivalent to extending the axial mating length between the plastic-coated body 546 and the rotating shaft, which is beneficial to further prevent external gas or liquid from contacting the rotor core 53 through the plastic-coated body 546 or even entering the inside of the rotor core 53, improving the reliability of product use and the bonding strength between the plastic-coated body 546 and the rotating shaft.

[0177] Specifically, the housing includes a first end layer 543 and a second end layer 544, as Figure 11 shown. The first end layer 543 covers one end face of the rotor core 53 and covers a part of the gasket 52, and the second end layer 544 covers the other end face of the rotor core 53, as Figure 11 shown.

[0178] More specifically, the first end layer 543 includes a first end portion 5431 and a second end portion 5432, and the second end layer 544 includes a third end portion 5441 and a fourth end portion 5442, as Figure 11 shown. The first end portion 5431 and the second end portion 5432 are connected in sequence from the inside to the outside along the radial direction of the rotor, and the first end portion 5431 covers a part of the gasket 52 and a part of the first end portion 5431 corresponds to the end face of the permanent magnet 55. The third end portion 5441 and the fourth end portion 5442 are connected in sequence from the outside to the inside along the radial direction of the rotor. That is to say, the diameter of the outer contour of the first end portion 5431 is smaller than the diameter D3 of the outer contour of the second end portion 5432, and the diameter D4 of the outer contour of the third end portion 5441 is larger than the diameter D5 of the outer contour of the fourth end portion 5442, as Figure 11 shown.

[0179] Wherein, the thickness of the first end portion 5431 is greater than the thickness T3 of the second end portion 5432, and the thickness T4 of the third end portion 5441 is smaller than the thickness T5 of the fourth end portion 5442, as Figure 11 shown.

[0180] Since external gas or liquid penetrates inward between the housing and the rotating shaft and then contacts the rotor core 53 or enters the inside of the rotor core 53, the part of the end face of the rotor core 53 that is radially closer to the inside is more likely to be corroded.

[0181] Therefore, in this solution, the two end layers of the housing are designed with a non-uniform thickness structure. The first end portion 5431 and the fourth end portion 5442 closer to the inside in the radial direction are relatively thick, while the second end portion 5432 and the third end portion 5441 closer to the outside in the radial direction are relatively thin. This is equivalent to locally thickening the radial inner part of the two end layers, which increases the distance between the part of the end face of the rotor core 53 closer to the inside in the radial direction and the external gas or liquid, facilitating the prevention of the external gas or liquid from entering the rotor core 53 and corroding the rotor core 53.

[0182] At the same time, compared with thickening the two end layers as a whole, it saves raw materials, reduces production costs, and also reduces the product weight. In addition, a part of the first end portion 5431 corresponds to the end face of the permanent magnet 55, which is beneficial for supporting the permanent magnet 55 during injection molding and improving the stability of the position of the permanent magnet 55.

[0183] Furthermore, the first end portion 5431 includes a protruding portion 54311 and a supporting portion 54312, as Figure 11 shown. The protruding portion 54311 and the supporting portion 54312 are connected in sequence from the inside to the outside along the radial direction of the rotor. That is to say, the diameter D0 of the outer contour of the gasket 52 is smaller than the diameter D1 of the outer contour of the protruding portion 54311, and the diameter D1 of the outer contour of the protruding portion 54311 is smaller than the diameter D2 of the outer contour of the supporting portion 54312. And, as Figure 10 and Figure 11 shown, a part of the gasket 52 is embedded in the protruding portion 54311 and is covered by the protruding portion 54311, and the supporting portion 54312 corresponds to the end face of the permanent magnet 55. The thickness T1 of the protruding portion 54311 is greater than the thickness T2 of the supporting portion 54312.

[0184] The first end portion 5431 is designed with a non-uniform thickness structure. The protruding portion 54311 closer to the inside in the radial direction is relatively thick, and the supporting portion 54312 closer to the outside in the radial direction is relatively thin. A part of the gasket 52 is embedded in the protruding portion 54311 and is covered by the protruding portion 54311, which further increases the distance between the part of the end face of the rotor core 53 closer to the inside in the radial direction and the external gas or liquid, facilitating further prevention of the external gas or liquid from entering the rotor core 53 and corroding the rotor core 53. And the position of the supporting portion 54312 corresponds to the end face of the permanent magnet 55, which is beneficial for supporting the permanent magnet 55 during injection molding and improving the stability of the position of the permanent magnet 55.

[0185] It can be understood that the part of the first end portion 5431 protruding from the second end portion 5432 can protrude towards the rotor core 53, in which case the filling portion 541 can form a part of the first end portion 5431; or it can protrude away from the rotor core 53, in which case the extending portion 545 can form a part of the first end portion 5431. Similarly, the filling portion 541 can form a part of the fourth end portion 5442, and the extending portion 545 can also form a part of the fourth end portion 5442. That is to say, the first end portion 5431 and the fourth end portion 5442 can be concave, convex, or both concave and convex at the same time to increase their thickness.

[0186] Further, the end face of the gasket 52 facing away from the rotor core 53 protrudes from the housing, as Figure 10 shown.

[0187] Making the end face of the gasket 52 facing away from the rotor core 53 protrude from the housing is beneficial in two aspects. On the one hand, it is conducive to increasing the layout range of the positioning structure, facilitating the reasonable design of the shape, position, quantity, etc. of the positioning structure according to needs to improve the positioning effect; on the other hand, it is also beneficial to reducing the amount of plastic used, thereby saving raw materials.

[0188] At the same time, the partial exposure of the gasket 52 outside the housing is also conducive to further increasing the axial distance between the rotor core 53 and the external gas or liquid, thereby further improving the rust prevention effect.

[0189] In addition, it can prevent friction and wear between the housing and other structures, playing a protective role for the housing. Of course, the end face of the gasket 52 facing away from the rotor core 53 can also be flush with the end face of the housing.

[0190] Specifically, the shape of the outer contour of the gasket 52 is circular (as Figure 13 shown) or polygonal (as Figure 12 shown).

[0191] The shape of the outer contour of the gasket 52 is not specifically limited, including but not limited to circular or polygonal (such as triangle, quadrilateral, pentagon, hexagon, octagon, etc.). Of course, it can also be other special-shaped shapes, such as petal-shaped or star-shaped, which can be specifically designed according to the specific structure of the product. Among them, polygons (the adjacent two sides can be connected by rounded corners or chamfers, or directly connected by sharp corners) or other non-circular special-shaped shapes can limit the circumferential relative rotation between the gasket 52 and the housing, thereby improving the connection reliability between the gasket 52 and the housing, and at the same time facilitating the use of the shape of the outer contour to position the permanent magnet 55.

[0192] Further, the gasket 52 is provided with a concave portion 524 (as Figure 12 and Figure 13 shown) and / or a convex portion.

[0193] Setting a concave portion 524, a convex portion, or both a concave portion 524 and a convex portion on the gasket 52 can play a good positioning role. Specifically, when these structures are provided at the portion of the gasket 52 in contact with the housing, these structures can increase the contact area between the housing and the gasket 52, thereby increasing the bonding force between the housing and the gasket 52, making the gasket 52 more firmly fixed and not easily loosened; and when these structures are not completely covered by the housing, they can also be used to position the permanent magnet 55. When these structures are provided at the portion of the gasket 52 not in contact with the housing, these structures can be used to position the permanent magnet 55. In addition, these concave portions 524 and convex portions can also be used to store liquid, play a lubricating role, and reduce the contact area between the gasket 52 and other external structures, thereby reducing the frictional resistance and improving heat generation due to friction.

[0194] Among them, the convex portion can be a relatively small protrusion; or it can be a relatively large convex plate.

[0195] In some specific examples, the positioning structure includes the outer contour of the gasket 52.

[0196] By reasonably designing the shape of the outer contour of the gasket 52 according to the position of the permanent magnet 55, when assembling the gasket 52, making its outer contour correspond to the position of the permanent magnet 55 groove, after the overmolding is completed, the position of the permanent magnet 55 can be located according to the outer contour of the gasket 52. The structure and principle are relatively simple and easy to implement.

[0197] In a specific example, the shape of the outer contour of the gasket 52 is a polygon, such as Figure 12 shown, a plurality of concave portions are provided on at least one end face of the gasket 52, the number of concave portions on at least one end face is equal to the number of sides of the polygon and the plurality of concave portions are evenly distributed along the circumferential direction of the gasket 52.

[0198] The shape of the outer contour of the gasket 52 is a polygon, which can be a strictly defined polygon, that is, two adjacent sides are directly connected by a sharp corner; or it can not be a strictly defined polygon, for example, two adjacent sides are connected by a rounded corner or a chamfer. In this way, the position of the permanent magnet 55 can be directly located by using the contour of the gasket 52, effectively simplifying the product structure. A plurality of concave portions equal to the number of sides of the polygon are evenly provided along the circumferential direction on at least one end face of the gasket 52, making the structure of the gasket 52 relatively regular and convenient for processing and forming. Among them, when the above-mentioned concave portions are provided on the end face of the gasket 52 facing the rotor core 53, these concave portions can increase the contact area between the gasket 52 and the overmolded body 546, thereby improving the bonding strength between the gasket 52 and the overmolded body 546. When the above-mentioned concave portions are provided on the end face of the gasket 52 facing away from the rotor core 53, these concave portions can be used to position the permanent magnet 55 and can also be used to accommodate liquid to improve heat generation due to friction.

[0199] For example: InFigure 12 In this case, the gasket 52 is square, and the number of permanent magnets 55 is four. The outer contour of the gasket 52 is directly used as a positioning structure to position the permanent magnets 55. That is to say, there is no need to set an additional positioning part, and the shape of the gasket 52 itself can be used for positioning. Compared with the scheme of additionally setting a positioning part on the gasket 52 or additionally setting a positioning part on the housing, this scheme significantly simplifies the production process and saves raw materials.

[0200] In some specific examples, the positioning structure includes recesses 524 and / or protrusions provided on the gasket 52.

[0201] According to the positions of the permanent magnets 55, the recesses 524, protrusions, or the number, shape, and position of the recesses 524 and protrusions are reasonably arranged. When assembling the gasket 52, a corresponding relationship is generated between these structures and the positions of the permanent magnet slots 55. After overmolding, the positions of the permanent magnets 55 can be positioned according to the outer contour of the gasket 52. The structure and principle are relatively simple and easy to implement.

[0202] Furthermore, the positioning structure includes a plurality of positioning parts. The number of positioning parts is equal to the number of permanent magnets 55, and the plurality of positioning parts directly correspond to the plurality of permanent magnets 55 one by one, for directly positioning the positions of the plurality of permanent magnets 55. In one embodiment, the number of permanent magnets 55 is 4, and the positioning structure includes four positioning parts, and the four positioning parts are respectively the four corner parts of the outer contour of the square gasket 52.

[0203] The positioning structure includes positioning parts. Using the positioning parts to position the positions of the permanent magnets 55 is beneficial to improving the positioning speed of the positions of the permanent magnets 55, and thus is beneficial to improving the magnetization efficiency. Among them, the number of positioning parts can be equal to the number of permanent magnets 55, or can be not equal to the number of permanent magnets 55, and can be used for directly positioning the positions of the permanent magnets 55, or can be used for indirectly positioning the positions of the permanent magnets 55.

[0204] Of course, for the case where the number of permanent magnets 55 is one, directly using one positioning part to position the position of the permanent magnet 55 is sufficient.

[0205] Specifically, the number of positioning parts is equal to the number of permanent magnets 55, and the plurality of positioning parts directly correspond to the plurality of permanent magnets 55 one by one. This scheme positions the positions of each permanent magnet 55 one by one through a plurality of positioning parts, realizing the direct positioning of the positions of each permanent magnet 55, ensuring the positioning accuracy of the positions of each permanent magnet 55. When magnetizing, magnetize each permanent magnet 55 according to each positioning part, and there is no need to perform calculations for indirect positioning. On the basis of ensuring the magnetization accuracy, it is beneficial to further improve the magnetization rate.

[0206] Further, the projection of the permanent magnet 55 on the end face of the rotor is a strip structure. The number of the permanent magnets 55 is multiple, and the multiple permanent magnets 55 are evenly distributed along the circumferential direction of the rotating shaft. The connection line between the center of the strip structure and the center of the end face of the rotor passes through the positioning portion.

[0207] Permanent magnet motors are generally divided into radial structure permanent magnet motors and tangential structure permanent magnet motors. The projection of the permanent magnet 55 on the end face of the rotor of a radial structure permanent magnet motor is generally a strip structure extending along the circumferential direction of the rotor core 53, and the projection of the permanent magnet 55 on the end face of the rotor of a tangential structure permanent magnet motor is generally a strip structure extending along the radial direction of the rotor core 53. If the connection line between the center of the strip structure and the center of the end face of the rotor passes through the positioning portion, then the connection line between the positioning portion and the center of the end face of the rotor will necessarily pass through the center position of the permanent magnet 55. Thus, the magnetizing head of the magnetizing device faces the positioning portion and also directly faces the center position of the permanent magnet 55, enabling accurate magnetization of the permanent magnet 55.

[0208] Embodiment Five

[0209] The difference from Embodiment Four is that: an annular groove is provided on the side peripheral surface 522 of the gasket 52. A part of the first end portion 5431 is embedded in the annular groove to cover a part of the gasket 52.

[0210] An annular groove is provided on the side peripheral surface 522 of the gasket 52, so that the longitudinal section of the gasket 52 is in an I shape. Since the gasket 52 is sleeved on the rotating shaft and the opening of the annular groove faces radially outward, the annular groove is exposed outside the rotating shaft and does not contact the rotating shaft. A part of the first end portion 5431 is embedded in the annular groove, so that the first end portion 5431 covers the groove wall of the annular groove and is tightly combined with the groove wall of the annular groove to form an integral body, and the bonding force is relatively high and the fixation is relatively firm, which can effectively prevent the gasket 52 from making axial relative movement with the housing.

[0211] In addition, the gasket 52 of this shape is relatively thick. On the basis of ensuring a relatively large distance between the radially inner part of the end face of the rotor core 53 and the external gas or liquid, the thickness at the corresponding position of the first end portion 5431 can be reduced. For example, the first end portion 5431 can be directly designed to have an equal thickness structure, which is thus beneficial to saving raw materials.

[0212] Embodiment Six

[0213] The difference from Embodiment Five is that: the positioning structure includes multiple positioning portions. The number of the positioning portions is equal to the number of the permanent magnets 55, and the multiple positioning portions cooperate to indirectly position the positions of the multiple permanent magnets 55. In one embodiment, the number of the permanent magnets 55 is 4, the positioning structure includes four positioning portions, and the four positioning portions are respectively the four corner portions of the outer contour of the square gasket 52.

[0214] The number of positioning portions is equal to the number of permanent magnets 55, and the multiple positioning portions cooperate to indirectly position the positions of the multiple permanent magnets 55. For example, when the multiple permanent magnets 55 are evenly distributed, the multiple positioning portions are respectively located between two adjacent permanent magnets 55, and there is a permanent magnet 55 between two adjacent positioning portions, thus realizing the positioning of the position of each permanent magnet 55 as well.

[0215] Further, the projection of the permanent magnet 55 on the end face of the rotor is a strip structure. Among them, the number of permanent magnets 55 is multiple, the multiple permanent magnets 55 are evenly distributed along the circumferential direction of the rotating shaft, and the positioning portion is located at the central position between two adjacent strip structures.

[0216] Permanent magnet motors are generally divided into radial structure permanent magnet motors and tangential structure permanent magnet motors. The projection of the permanent magnet 55 of a radial structure permanent magnet motor on the end face of the rotor is generally a strip structure extending along the circumferential direction of the rotor core 53, and the projection of the permanent magnet 55 of a tangential structure permanent magnet motor on the end face of the rotor is generally a strip structure extending along the radial direction of the rotor core 53. Among them, when the multiple permanent magnets 55 are evenly distributed along the circumferential direction of the rotating shaft, the positioning portion can be located at the central position between two adjacent strip structures, and the middle position between two positioning portions is a permanent magnet 55. Or according to the cooperation between the positioning portion and the indication marking portion, by rotating a suitable angle along the position where the positioning portion is located, the position of one of the adjacent permanent magnets 55 can be located, and then the positions of other permanent magnets 55 can be deduced.

[0217] Among them, for a radial structure permanent magnet motor, it is preferably to set the positioning portion on the connection line between the center of the strip structure and the center of the end face of the rotor; for a tangential structure permanent magnet motor, it is preferably to set the positioning portion at the central position between two adjacent strip structures.

[0218] Embodiment Seven

[0219] The difference from Embodiment Five is that the positioning structure includes a positioning portion and an indication marking portion. The positioning portion positions the position of at least one permanent magnet 55, and the indication marking portion is used to cooperate with the positioning portion to deduce the positions of other permanent magnets 55.

[0220] This solution realizes the direct positioning of the position of at least one permanent magnet 55 through the positioning portion, and realizes the indirect positioning of the positions of other permanent magnets 55 through the cooperation between the position of this permanent magnet 55 (obtained by the positioning portion) and the indication marking portion. Compared with the solution of setting multiple positioning portions corresponding one by one to the permanent magnets 55, it is beneficial to simplify the positioning structure and the production process.

[0221] Among them, the number of the positioning portions and the specific number of the indication marking portions are not limited, and the number of the positioning portions and the number of the indication marking portions can be equal or not equal.

[0222] For example, when the number of positioning parts is one and the number of indication and identification parts is one, it is beneficial to further simplify the positioning structure and the production process. Or, when the number of positioning parts is two and the number of indication and identification parts is two, it is beneficial to further improve the positioning speed and the magnetization rate. Or, when the number of positioning parts is two and the number of indication and identification parts is one, it is beneficial to further simplify the positioning structure while improving the positioning speed.

[0223] Further, the indication and identification part includes an identification for indicating the number of permanent magnets 55.

[0224] The indication and identification part includes an identification for indicating the number of permanent magnets 55, such as Arabic numerals, Chinese characters, etc. By the position of one or more permanent magnets 55 and in combination with the number of permanent magnets 55, the positions of other permanent magnets 55 can be deduced. Among them, the number of permanent magnets 55 indicated by the indication and identification part can be the total number of permanent magnets 55 or the number of some permanent magnets 55.

[0225] For example: Four permanent magnets 55 are evenly distributed. The number of positioning parts is one or two, and the indication and identification part adopts the form of or four; Five permanent magnets 55 are evenly distributed. The number of positioning parts is two, and the indication and identification part adopts the form of or five; Six permanent magnets 55 are unevenly distributed. Among them, three permanent magnets 55 are evenly distributed according to a certain rule to form a first group, and the other three permanent magnets 55 are evenly distributed according to a certain rule to form a second group. The number of positioning parts is two, and the number of indication and identification parts is also two. One positioning part indicates one of the permanent magnets 55 in the first group, and the indication and identification part adopts the form of or three. The other positioning part indicates one of the permanent magnets 55 in the second group, and the indication and identification part adopts the form of or three.

[0226] Embodiment Eight

[0227] The difference from Embodiment Seven is that the indication and identification part includes an identification for indicating the arrangement form of the permanent magnets 55.

[0228] The indication and identification part includes an identification for indicating the arrangement form of the permanent magnets 55, such as a polygonal structure, a star structure, a multi - dot structure with intervals, etc. By the position of one or more permanent magnets 55 and in combination with the arrangement form of the permanent magnets 55, the positions of other permanent magnets 55 can be deduced.

[0229] For example: Four permanent magnets 55 are evenly distributed, and the indication and identification part adopts a regular quadrilateral or a four - point form; Multiple permanent magnets 55 are distributed in a pentagram shape, and the indication and identification part adopts the form of a pentagram.

[0230] Of course, the indication and identification part may also include the above-mentioned identification for indicating the number of permanent magnets 55 and the arrangement form of the permanent magnets 55, which is beneficial to further improve the positioning speed and further improve the magnetization rate.

[0231] In a specific example, a certain number of permanent magnets 55 are evenly distributed, there are a certain number of positioning parts, and the indication and identification part adopts the form of - where represents the number of positioning parts and represents a certain number of permanent magnets 55 evenly distributed.

[0232] In another specific example, the indication and identification part is a polygonal structure, the polygonal structure encloses a distribution diagram of a plurality of permanent magnets 55, and multiple vertices or multiple sides of the polygonal structure represent a plurality of permanent magnets 55.

[0233] If the indication and identification part adopts a polygonal structure and the polygonal structure encloses a distribution diagram of a plurality of permanent magnets 55, then as long as the position of one of the permanent magnets 55 is known, the positions of the other permanent magnets 55 can be deduced according to this distribution diagram. The structure and principle are relatively simple and easy to implement. For example: when three permanent magnets 55 are evenly distributed, the indication and identification part adopts an equilateral triangle; when three permanent magnets 55 are non-uniformly distributed, the indication and identification part adopts a non-equilateral triangle; when four permanent magnets 55 are evenly distributed, the indication and identification part adopts a square; when five permanent magnets 55 are evenly distributed, the indication and identification part adopts a regular pentagon.

[0234] Among them, in order to balance the accuracy of later magnetization and the magnetization rate, generally this scheme is adopted for a plurality of evenly distributed permanent magnets 55. For a rotor with a radial structure, a plurality of permanent magnets 55 can be represented by multiple sides of a polygonal structure; for a rotor with a tangential structure, a plurality of permanent magnets 55 can be represented by multiple vertices of a polygonal structure.

[0235] Of course, the indication and identification part is not limited to the above-mentioned form of polygonal structure. For example: it can also adopt a plurality of dot-like structures arranged at intervals, or adopt structures such as Arabic numerals or Chinese characters.

[0236] In any of the above embodiments, the shape of the positioning part is circular, square, triangular, strip-shaped or linear.

[0237] The shape of the positioning part is not specifically limited, including but not limited to circular, square, triangular, strip-shaped, linear, and can be specifically designed according to the specific structure of the product.

[0238] An embodiment of the second aspect of the present invention provides a vehicle 100, as Figure 14 shown, including: a vehicle body 102 and a water pump 104 as in any one of the embodiments of the first aspect, installed in the vehicle body 102.

[0239] The vehicle 100 provided by the embodiment of the second aspect of the present invention includes the water pump 104 of the embodiment of the first aspect, and thus has all the beneficial effects of any of the above embodiments, which will not be repeated here.

[0240] In the present invention, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plurality" means two or more unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0241] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0242] In the description of this specification, the descriptions of the terms "an embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0243] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water pump, characterized in that, include: A motor, comprising a housing and a rotating shaft; A hydraulic assembly, wherein the hydraulic assembly comprises an impeller, and the impeller is connected to the rotating shaft; The housing is provided with at least one bearing mounting portion, the bearing mounting portion is provided with a bearing hole and a thrust surface; a bearing is mounted at the bearing mounting portion, the rotating shaft passes through the bearing, the bearing is provided with a stop convex edge, the stop convex edge is abutted against the thrust surface to limit the bearing axially; The number of the bearing mounting parts is at least two, one of the bearing mounting parts is a second bearing mounting part, and the bearing hole and the thrust surface provided on the second bearing mounting part are a second bearing hole and a second thrust surface; The housing comprises a housing body and a base connected to the housing body, and the second bearing mounting portion is arranged on the base; The bearing installed at the second bearing installation portion is a second bearing, the stop convex edge provided on the second bearing is a second stop convex edge, and the second stop convex edge is provided at one end of the second bearing close to the impeller; The rotating shaft is a hollow rotating shaft, and a water passing space is provided between an end of the hollow rotating shaft away from the impeller and an end of the second bearing hole away from the impeller; A cooling chamber is provided in the casing; A first partition and a second partition are provided in the casing, and the first partition and the second partition are arranged opposite to each other along the radial direction of the rotating shaft and define a water passage, and both ends of the water passage are respectively connected to the water passage space and the cooling chamber, and extend into the water passage space and the cooling chamber; the first partition and the second partition are both arranged along the radial direction of the rotating shaft, arranged radially, and make the end of the water passage connected to the cooling chamber relatively wide, and the end connected to the second bearing hole relatively narrow.

2. The water pump according to claim 1, characterized in that: One of the bearing mounting parts is a first bearing mounting part, and the bearing hole and the thrust surface provided on the first bearing mounting part are a first bearing hole and a first thrust surface; The first bearing mounting portion is provided on the shell body; The bearing installed at the first bearing mounting portion is a first bearing, and the stop convex edge provided on the first bearing is a first stop convex edge. The first stop convex edge is provided at an end of the first bearing away from the impeller.

3. The water pump according to claim 2, characterized in that: The motor comprises a rotor assembly, which is sleeved on the rotating shaft and located in the shell body; A gasket is sleeved on the rotating shaft and is located between the first bearing and the rotor assembly.

4. The water pump according to claim 3, characterized in that, The rotor assembly comprises: A rotor, wherein the end surface of the rotor facing the gasket is provided with a limiting structure, and the limiting structure is used to limit the axial position of the gasket; An elastic support member is sandwiched between the gasket and the end surface of the rotor and is used for elastically supporting the gasket.

5. The water pump according to claim 4, characterized in that The limiting structure comprises: At least one first stopper, one end of the first stopper is connected to the end surface of the rotor, and the other end of the first stopper is provided with a buckle, and the buckle is used to stop and cooperate with the end of the gasket away from the rotor; At least one second stopper, wherein the second stopper and the first stopper are arranged at intervals along the circumferential direction of the end surface.

6. The water pump according to claim 4, characterized in that: The limiting structure includes at least one stop protrusion, and the stop protrusion is used to stop and cooperate with an end of the gasket away from the rotor.

7. The water pump according to claim 6, wherein, The limiting structure comprises: An annular limiting portion, one end of which is connected to the end surface of the rotor, the other end of which is provided with at least one stop protrusion, and the annular limiting portion is sleeved on the outside of the gasket.

8. The water pump according to claim 7, characterized in that: The gasket is provided with an avoidance notch for avoiding the stop protrusion, and the gasket is suitable for rotating relative to the annular limiting portion so that the avoidance notch and the stop protrusion are staggered; or, The annular limiting portion is provided with an anti-rotation portion, and the gasket includes a main body and a stop protrusion connected to the main body. The anti-rotation portion and the stop protrusion are matched along the circumferential direction of the rotor to limit the gasket from rotating relative to the rotor.

9. The water pump according to claim 3, characterized in that, The rotor assembly comprises a rotor, wherein the rotor comprises: A rotor core, wherein the rotor core is provided with an axial hole for accommodating a rotating shaft and an accommodating groove for installing a permanent magnet; A permanent magnet is disposed in the receiving groove; A shell, covering at least an end surface of the rotor core to encapsulate the permanent magnet in the rotor core, one end surface of the shell forming an end surface of the rotor facing the gasket; The gasket is provided with a positioning structure for directly or indirectly positioning the position of the permanent magnet, and the gasket is fixed on the housing and is coaxially arranged with the rotor core.

10. The water pump according to claim 9, characterized in that The shell is a plastic-encapsulated body, which covers the part of the rotor core exposed to the shaft hole and the gasket, and covers the part of the gasket exposed to the shaft hole, and forms an integrated structure with the rotor core and the gasket.

11. The water pump according to claim 10, characterized in that The overmolded body comprises an extension portion, which is arranged on an end surface of the overmolded body and extends along the axial direction of the rotor, and the extension portion is annular and surrounds the rotating shaft.

12. The water pump according to claim 9, characterized in that The housing comprises a first end layer and a second end layer, the first end layer covers one end surface of the rotor core and envelops at least a portion of the gasket, and the second end layer covers the other end surface of the rotor core; The first end layer includes a first end and a second end, the first end and the second end are sequentially connected from inside to outside along the radial direction of the rotor, the diameter of the outer contour of the first end is smaller than the diameter of the outer contour of the second end, the first end covers a part of the gasket and a part of the first end corresponds to the end surface of the permanent magnet; The second end layer includes a third end and a fourth end, the third end and the fourth end are sequentially connected from outside to inside along the radial direction of the rotor, and the diameter of the outer wheel of the third end is greater than the diameter of the outer contour of the fourth end.

13. The water pump according to claim 9, wherein the positioning structure includes the outer contour of the gasket; and / or the positioning structure includes concave portions and / or convex portions provided on the gasket.

14. The water pump according to claim 1, wherein the second bearing mounting portion is a split bearing seat, the bearing seat includes n seat bodies, and the n seat bodies are arranged at intervals along the circumferential direction of the rotating shaft and enclose the second bearing hole; the housing is provided with a water passage hole communicating with the cooling chamber, the water passage hole communicates with the cooling chamber, and the cooling chamber communicates with the water passage space.

15. The water pump according to claim 14, wherein one end of the water passage communicating with the water passage space passes through the gap between adjacent seat bodies and extends into the water passage space; one end of the water passage communicating with the cooling chamber penetrates through the chamber wall of the cooling chamber and extends into the cooling chamber, the number of the cooling chambers is multiple, the multiple cooling chambers are arranged at intervals along the circumferential direction of the rotating shaft, and reinforcing ribs are provided between adjacent cooling chambers; the number of the cooling chambers is equal to the number of the seat bodies, and the cooling chambers and the seat bodies are staggered along the circumferential direction of the rotating shaft; the number of the water passage holes is multiple, and any one of the cooling chambers communicates with at least one of the water passage holes.

16. The water pump according to any one of claims 1 to 15, wherein the bearing mounting portion is provided with a chamfer, and the chamfer is located between the thrust surface and the bearing hole.

17. The water pump according to any one of claims 2 to 13, wherein one end of the first bearing close to the impeller is hidden inside the housing.

18. A vehicle, characterized in that, Comprising: a vehicle body; and the water pump according to any one of claims 1 to 17, mounted in the vehicle body.

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