Plastic magnetic rotor for automobile water pump

Abstract

The utility model relates to the technical field of plastic magnetic rotor structures, and discloses a plastic magnetic rotor for an automobile water pump, which comprises a rotating shaft, a rotor punching sheet group arranged on the rotating shaft, an annular mounting groove arranged on the rotor punching sheet group, four positioning frames arranged on the annular mounting groove, and positioning columns connected among the positioning frames. A magnetic filler made of a magnetic material is fixed in the positioning frame, a rotor sleeve is sleeved on the outer side of the rotor punching sheet group, and a rotor cover is arranged on the rotor sleeve. According to the utility model, the positioning frame is arranged in the annular mounting groove, so that the position of the magnetic filler can be conveniently positioned, the magnetic filler can be uniformly distributed in the plastic magnetic rotor, and meanwhile, the heat dissipation plate can be tightly attached to the surface of the magnetic filler, so that the internal heat can be conducted, and the heat dissipation effect is further achieved; and the operation stability and reliability of the plastic magnetic rotor are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic magnetic rotor structure technical field especially relates to a plastic magnetic rotor for automobile water pump. BACKGROUND

[0002] In modern automobiles, water pumps serve as the core component of the cooling system, responsible for circulating coolant to maintain engine temperature stability. In recent years, to improve the efficiency and performance of water pumps, plastic magnetic rotors have been gradually applied in automobile water pumps as the core component of the driving motor. Due to its lightweight, low cost, corrosion resistance and other advantages, the plastic magnetic rotor can ensure the efficient operation of the water pump while reducing weight and manufacturing cost. Especially in the design of electric water pumps, the plastic magnetic rotor, due to its good magnetic performance and high structural reliability, has become an ideal choice to replace traditional metal rotors.

[0003] However, in practical applications, plastic magnetic rotors face a serious technical bottleneck - heat dissipation. As a long-running component, the working environment of the water pump is usually harsh, and the rotor needs to operate continuously under high speed and high load. Although the plastic matrix inside the plastic magnetic rotor has certain mechanical strength and shape retention, its thermal conductivity is poor, making it difficult to effectively dissipate the heat generated during operation. Especially under high temperature and long time operation conditions, a large amount of heat is easily accumulated inside the plastic magnetic rotor, causing the temperature to be too high, further affecting its magnetic performance, causing demagnetization of the magnetic material or softening of the plastic matrix, and in severe cases, it may cause the water pump to reduce efficiency or directly damage.

[0004] Existing heat dissipation schemes usually rely on external air flow or the thermal conductivity of the rotor shell, which still cannot meet the high-efficiency heat dissipation requirements of the plastic magnetic rotor in high-load or high-speed working environments. Especially under the high performance demand of electric water pumps, the existing technology cannot fully solve the internal heat dissipation, resulting in excessive temperature rise of the plastic magnetic rotor, affecting its long-term stability and reliability. INVENTION CONTENTS

[0005] The utility model provides a plastic magnetic rotor for automobile water pump in view of the shortcoming in prior art.

[0006] To solve the above technical problems, the utility model solves them through the following technical schemes.

[0007] A plastic magnetic rotor for automobile water pump, comprising a rotating shaft, a rotor punching piece group is arranged on the rotating shaft, an annular mounting groove is arranged on the rotor punching piece group, four positioning racks are arranged on the annular mounting groove, positioning columns are connected between the positioning racks, magnetic fillers made of magnetic materials are fixed in the positioning racks, a rotor sleeve is sleeved outside the rotor punching piece group, and a rotor cover is arranged on the rotor sleeve.

[0008] As preferred, the positioning frame is provided with a placing groove for fixing the magnetic filler.

[0009] As preferred, the placing groove is connected with a placing opening.

[0010] As preferred, the placing groove is connected with a placing opening.

[0011] As preferred, the positioning frame is provided with a placing groove for fixing the magnetic filler.

[0012] As preferred, the positioning frame is provided with a placing groove for fixing the magnetic filler.

[0013] The utility model discloses a positioning frame is arranged in the annular installation groove, and the position of the magnetic filler is positioned conveniently, the magnetic filler can be evenly distributed in the plastic magnetic rotor, and the heat inside can be conducted through the heat dissipation plate closely attached to the surface of the magnetic filler, thereby achieving the effect of heat dissipation, and the stability and reliability of the plastic magnetic rotor operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a three-dimensional structure schematic view of a plastic magnetic rotor for an automobile water pump of the utility model;

[0015] Figure 2 is a front view sectional structure schematic view of a plastic magnetic rotor for an automobile water pump of the utility model;

[0016] Figure 3 is Figure 2 the structure enlarged schematic view of A of

[0017] Figure 4 is a side view sectional structure schematic view in a plastic magnetic rotor for an automobile water pump of the utility model;

[0018] Figure 5 is a structure schematic view of a heat dissipation plate in a plastic magnetic rotor for an automobile water pump of the utility model.

[0019] In the drawing: 1-rotating shaft, 2-rotor lamination group, 3-annular installation groove, 4-positioning frame, 41-placing groove, 42-placing opening, 43-positioning slot, 5-positioning column, 6-magnetic filler, 7-rotor cover, 8-rotor cover, 9-heat dissipation plate, 91-positioning protrusion. DETAILED DESCRIPTION

[0020] With reference to the drawings and embodiments disclosed herein, it is obvious that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments disclosed herein, all other embodiments obtained by a person of ordinary skill in the art without creative effort shall fall within the scope of the present application.

[0021] As shown in Figures 1 to 5 The automobile water pump plastic magnetic rotor provided by the embodiment of the present application comprises a rotating shaft 1, a rotor lamination set 2 arranged on the rotating shaft 1, an annular mounting groove 3 arranged on the rotor lamination set 2, four positioning racks 4 arranged on the annular mounting groove 3, a positioning column 5 connected between the positioning racks 4, a magnetic filler 6 made of magnetic material fixed in the positioning racks 4, a rotor sleeve 7 sleeved on the outside of the rotor lamination set 2, and a rotor cover 8 arranged on the rotor sleeve 7. In the embodiment, the positioning racks 4 are arranged in the annular mounting groove 3, so that the position of the magnetic filler 6 can be positioned, the magnetic filler 6 can be uniformly distributed in the plastic magnetic rotor, and the generated heat can be relatively uniform.

[0022] In the embodiment, a placing groove 41 is arranged in the positioning rack 4, the placing groove 41 is used for fixing the magnetic filler 6, the magnetic filler 6 is formed by mixing magnetic powder (such as neodymium iron boron powder, ferrite powder, etc.) and plastic resin (such as nylon, polystyrene, etc.), and a certain space is left for placing the heat dissipation plate 9.

[0023] In the embodiment, a placing opening 42 is connected above the placing groove 41, the placing opening 42 is used for placing the heat dissipation plate 9, and the heat dissipation plate 9 is inserted into the placing groove 41 through the placing opening 42 and abuts against one side of the magnetic filler 6. The heat dissipation plate 9 can be tightly attached to the surface of the magnetic filler 6, so that the internal heat can be conducted, thereby achieving the effect of heat dissipation and improving the stability and reliability of the plastic magnetic rotor.

[0024] The heat dissipation plate 9 is provided with positioning protrusions 91 on both sides, the placing opening 42 is provided with positioning groove openings 43 connected with the placing opening 42 on both sides, the heat dissipation plate 9 is fixed by embedding the positioning protrusions 91 and the positioning groove openings 43, and the heat dissipation plate 9 is fixed on the positioning rack 4, thereby improving the overall stability.

[0025] The lower end of the heat dissipation plate 9 is arranged in an arc shape, so as to facilitate the insertion of the heat dissipation plate 9 into the placing groove 41. The heat dissipation plate 9 is in an L shape, so as to increase the heat dissipation area with the outside. The heat dissipation plate 9 is made of high-thermal-conductivity plastic polyester-based composite material, so as to maintain the lightweight characteristics of the plastic while providing relatively good heat conduction capacity.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that are not specifically enumerated herein. The use of certain terms in various places of this application is not intended to exclude all other embodiments that can be drawn to the same general concept. It is intended that the present application encompass all such possible embodiments. In addition, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Any and all statements made herein should be understood to encompass identical and equivalent steps, in addition to those that are explicitly described. Any and all statements made herein apply equally to the corresponding steps of any and all methods and processes described herein.

[0027] The above description of disclosed embodiments provides enabling disclosure sufficient for one of ordinary skill in the art to practice or use the present application. Numerous modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic magnetic rotor for an automotive water pump, characterized by: The utility model relates to a rotator with magnetic material filling device, which comprises a rotating shaft (1), a rotor lamination group (2) arranged on the rotating shaft (1), an annular mounting groove (3) arranged on the rotor lamination group (2), four positioning racks (4) arranged on the annular mounting groove (3), positioning columns (5) connected between the positioning racks (4), magnetic material fillings (6) made of magnetic material fixed in the positioning racks (4), a rotor sleeve (7) sleeved outside the rotor lamination group (2), and a rotor cover (8) arranged on the rotor sleeve (7).

2. A plastic magnetic rotor for a water pump of an automobile as defined in claim 1, wherein: The positioning rack (4) is provided with a placing groove (41) for fixing the magnetic material filling (6).

3. A plastic magnetic rotor for a water pump of an automobile as defined in claim 2, wherein: The placing groove (41) is connected with a placing opening (42) above.

4. A plastic magnetic rotor for a water pump of an automobile as defined in claim 3, wherein: The utility model further comprises a heat dissipation plate (9) which is inserted into the placing groove (41) through the placing opening (42) and is close to one side of the magnetic material filling (6).

5. A plastic magnetic rotor for a water pump of an automobile as defined in claim 4, wherein: The heat dissipation plate (9) is provided with positioning protrusions (91) on both sides, the placing opening (42) is provided with positioning grooves (43) connected with the placing opening (42) on both sides, and the heat dissipation plate (9) is fixed through the embedding of the positioning protrusions (91) and the positioning grooves (43).

6. A plastic magnetic rotor for a water pump of an automobile as defined in claim 5, wherein: The lower end of the heat dissipation plate (9) is arc-shaped, and the heat dissipation plate (9) is L-shaped.

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