Plastic magnetic rotor of water pump

Abstract

The utility model provides a water pump plastic magnetic rotor, which relates to the field of water pump parts and comprises a rotor magnet and a blade structure which are integrally formed, a blade cover is arranged on the blade structure, a bearing is arranged in the rotor magnet, a supporting structure is arranged on the top surface of the inner wall of the blade cover, and the lower end surface of the supporting structure is matched with the curved surface of the upper end surface of the blade structure in shape. The supporting structure is used for providing contact supporting between the blade cover and the blade structures, and positioning structures with the same number as the blade structures are arranged on the supporting structure. Stable contact support is provided between the blade cover and the blade structure through the supporting structure, it is ensured that the relative positions of the blade cover and the blade structure are stable in the water pump operation process, the positioning structure is matched to ensure the relative position precision between the blade and the blade cover, and therefore the operation efficiency and stability of the water pump are improved.

Description

A plastic magnetic rotor for a water pump Technical Field

[0001] This utility model relates to the field of water pump components, and in particular to a plastic magnetic rotor for a water pump. Background Technology

[0002] In the core transmission components of a water pump, the structural design of the plastic magnetic rotor assembly directly affects the fluid drive efficiency and operational stability. As a key component for the plastic magnetic rotor to convert fluid kinetic energy, the blades must be precisely installed between the blade cover and the main body of the plastic magnetic rotor to ensure that parameters such as blade angle and spacing meet the requirements of fluid dynamics design.

[0003] Currently, the blade assembly structure of traditional water pump plastic magnetic rotors generally adopts simple plug-in or snap-fit ​​connections, relying solely on the initial alignment of the blade base with the pre-reserved slots in the blade cover for installation. This type of structure has two major drawbacks: First, it lacks a dedicated support and positioning structure; the blade and blade cover are only limited by single-point or short-line contact. During high-speed pump operation, the blades are prone to radial or circumferential displacement due to fluid impact or rotor vibration, causing the relative position of the blades and blade cover to deviate from the design reference. Second, existing assembly methods rely on manual alignment or simple tooling for positioning, making it difficult to guarantee the consistency of blade installation angles and depths, and significantly affecting assembly accuracy due to operational errors. Therefore, a new type of water pump plastic magnetic rotor is proposed. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a stable contact support between the cover and the blade structure through a support structure, ensuring the stability of their relative positions during pump operation. Combined with a positioning structure, it ensures the accuracy of the relative position between the blade and the cover, thereby improving the pump's operating efficiency and stability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A water pump plastic magnetic rotor includes an integrally formed rotor magnet and blade structure. The blade structure is provided with a blade cover, and the rotor magnet is provided with a bearing. The top surface of the inner wall of the blade cover is provided with a support structure. The lower end face of the support structure is adapted to the curved shape of the upper end face of the blade structure to provide contact support between the blade cover and the blade structure. The support structure is provided with a positioning structure with the same number of blades as the blade structure to realize the assembly positioning of the blade cover and the blade structure.

[0007] Preferably, the support structure consists of several ribs, and the lower end face of each rib forms a full curved surface contact with the upper end face of the blade structure.

[0008] Preferably, the positioning structure includes a first slot and a first block alternately distributed on the ribs of the support structure, and a second slot and a second block correspondingly disposed on the blades of the blade structure, wherein the first block and the second slot, and the second block and the first slot respectively form a bidirectional insertion engagement.

[0009] Preferably, the first and second locking blocks are made of elastic material and form an interference fit with the corresponding first or second locking slot.

[0010] Preferably, the top of the first card block extends upward to form a first marking portion, and the bottom of the second card slot extends downward to form a second marking portion, with the first marking portion and the second marking portion being coaxially arranged.

[0011] Preferably, the bottom edge of the blade cover and the top edge of the rotor magnet are provided with a staggered step structure to guide disassembly.

[0012] Preferably, the support structure and the leaf cover are integrally molded using an injection molding process.

[0013] Preferably, the groove walls of the first and second slots are provided with guide slopes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The plastic magnetic rotor for the water pump provided in this application provides stable contact support between the cover and the blade structure through a support structure, ensuring the stability of their relative positions during water pump operation. Combined with the positioning structure, it ensures the accuracy of the relative position between the blade and the cover, thereby improving the operating efficiency and stability of the water pump.

[0016] This application improves assembly efficiency and accuracy and reduces reliance on the operator's skill level through positioning structure design, such as bidirectional plug-in fit, interference fit, and coaxial setting of marking parts.

[0017] The supporting structure of this application is composed of ribs that make full contact with the curved surface of the blade, thereby increasing the contact area, dispersing stress, improving structural strength, and reducing the risk of blade deformation and damage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 is a schematic diagram of the disassembled structure of this utility model;

[0021] Figure 3 is a front view cross-sectional structural diagram of this utility model;

[0022] Figure 4 is a schematic diagram of the leaf cover structure from below in this utility model;

[0023] Figure 5 is a partial structural diagram of the rotor magnet of this utility model;

[0024] Figure 6 is a partial structural diagram of the rotor magnet and blade cover of this utility model;

[0025] Figure 7 is an enlarged structural schematic diagram of point A in Figure 4 of this utility model.

[0026] Figure number explanation: 1. Rotor magnet; 2. Blade structure; 3. Blade cover; 4. Bearing; 5. Support structure; 6. First locking block; 61. First marking part; 7. First locking slot; 8. Second locking slot; 81. Second marking part; 9. Second locking block. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0029] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0030] It is understood that the term "a" should be understood as "at least one" or "one or more," meaning that in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity. Embodiments

[0031] Please refer to Figures 1-6. A water pump plastic magnetic rotor includes an integrally formed rotor magnet 1 and a blade structure 2. The blade structure 2 is provided with a blade cover 3. The rotor magnet 1 is provided with a bearing 4. The top surface of the inner wall of the blade cover 3 is provided with a support structure 5. The lower end face of the support structure 5 is adapted to the curved shape of the upper end face of the blade structure 2 to provide contact support between the blade cover 3 and the blade structure 2. The support structure 5 is provided with a positioning structure with the same number of blades as the blade structure 2 to realize the assembly positioning of the blade cover 3 and the blade structure 2.

[0032] This utility model relates to a plastic magnetic rotor for a water pump. Its core structure includes an integrally formed rotor magnet 1 and a blade structure 2. A cover 3 is mounted on the blade structure 2, and a bearing 4 is embedded inside the rotor magnet 1. A support structure 5 is designed on the top surface of the inner wall of the cover 3. The curved shape of the lower end face of this support structure 5 precisely matches the curved shape of the upper end face of the blade structure 2, ensuring a tight fit and providing stable contact support between the cover 3 and the blade structure 2, thus ensuring their stable relative position during pump operation.

[0033] The support structure 5 is composed of several ribs. The lower end face of each rib forms a full curved surface contact with the upper end face of the blade of the blade structure 2, which increases the contact area, further improves the support stability, reduces stress concentration, and extends the service life of the rotor.

[0034] The support structure 5 is equipped with a positioning structure having the same number of blades as the blade structure 2. This structure is used to achieve precise assembly and positioning of the blade cover 3 and the blade structure 2, ensuring the relative positional accuracy between the blades and the blade cover 3, thereby improving the operating efficiency and stability of the water pump.

[0035] The positioning structure specifically includes a first slot 7 and a first block 6 alternately distributed on the ribs of the support structure 5, and a second slot 8 and a second block 9 correspondingly disposed on the blades of the blade structure 2. The first block 6 and the second slot 8, and the second block 9 and the first slot 7 respectively form a bidirectional insertion fit. This bidirectional insertion method makes the assembly of the blade cover 3 and the blade structure 2 more secure, effectively preventing displacement due to external forces during pump operation.

[0036] To facilitate assembly and improve positioning accuracy, the groove walls of the first slot 7 and the second slot 8 are provided with guide slopes. The design of the guide slopes allows the card blocks to be smoothly inserted into the slots, reducing friction and resistance during the assembly process and improving assembly efficiency.

[0037] The first locking block 6 and the second locking block 9 are made of elastic material and form an interference fit with the corresponding first locking slot 7 or second locking slot 8. When the locking blocks made of elastic material are inserted into the slots, they will undergo a certain elastic deformation, generating elastic restoring force, thereby tightly locking them in the slots, further enhancing the connection strength between the blade cover 3 and the blade structure 2, and ensuring the stability of their relative positions.

[0038] The top of the first locking block 6 extends upward to form a first marking part 61, and the bottom of the second locking groove 8 extends downward to form a second marking part 81. The first marking part 61 and the second marking part 81 are coaxially arranged. During the assembly process, by observing the alignment of the first marking part 61 and the second marking part 81, it is possible to intuitively determine whether the assembly position of the blade cover 3 and the blade structure 2 is accurate, which facilitates the operator to perform assembly quickly and accurately, thereby improving the accuracy and efficiency of assembly.

[0039] The bottom edge of the blade cover 3 and the top edge of the rotor magnet 1 are provided with a staggered step structure. This staggered step structure plays a guiding role when disassembling the blade cover 3, making the disassembly process more convenient and quick, reducing the disassembly difficulty and improving maintenance efficiency.

[0040] The support structure 5 and the blade cover 3 are integrally molded using injection molding, which ensures the connection strength and integrity between the support structure 5 and the blade cover 3. At the same time, the injection molding process can achieve high-precision molding, which improves the dimensional accuracy and surface quality of the support structure 5 and helps to improve the assembly accuracy between the blade cover 3 and the blade structure 2.

[0041] In the actual production process, the support structure 5 and the blade cover 3 are first integrally molded using injection molding, ensuring a tight connection and high precision between the two. Then, the blade structure 2 is assembled with the integrally molded rotor magnet 1. When assembling the blade cover 3, the first locking block 6 and the second locking block 9 are aligned with their corresponding second locking slots 8 and 7 using guide ramps. Through the elastic deformation and interference fit of the elastic material, the blade cover 3 is securely assembled onto the blade structure 2. Simultaneously, the alignment of the first marking part 61 and the second marking part 81 is observed to ensure the accuracy of the assembly position. The entire assembly process is simple, convenient, and quick. The connection between the assembled blade cover 3 and the blade structure 2 is firm and reliable, effectively ensuring the accurate relative position of the blade and the blade cover 3, and improving the performance and reliability of the water pump's plastic magnetic rotor.

[0042] In the design, the thickness of the ribs is controlled to be 1 / 3 to 1 / 2 of the thickness of the blade structure 2. This thickness ratio can ensure that the support structure 5 has sufficient strength to support the blade cover 3, and will not make the entire rotor structure too bulky, thus affecting the working performance of the water pump.

[0043] When the water pump is working, the rotor magnet 1 rotates at high speed under the drive of the motor, which drives the blade structure 2 to rotate as well. Because the blade cover 3 and the blade structure 2 are precisely assembled and stably connected through the uniquely designed support structure 5 and positioning structure, the relative position between the blade and the blade cover 3 remains stable at all times. The water flow channel is smooth, and the water can flow through the flow channel formed by the blade cover 3 and the blade structure 2 efficiently, thereby improving the pumping efficiency of the water pump.

[0044] The support structure 5 is composed of several ribs. The lower end face of each rib forms a full curved surface contact with the upper end face of the blade of the blade structure 2. This full curved surface contact method makes the force between the cover 3 and the blade structure 2 more uniform, reduces local stress concentration, reduces the risk of blade deformation and damage caused by stress concentration, and extends the service life of the water pump.

[0045] The bidirectional plug-in fit and interference fit in the positioning structure, as well as the locking block made of elastic material, enable the cover 3 and the blade structure 2 to resist external interference during the operation of the water pump, prevent displacement due to external forces, ensure the stability and consistency of the water flow channel, and thus guarantee the stable operation of the water pump.

[0046] The coaxial arrangement of the first marking part 61 and the second marking part 81 can intuitively indicate the assembly position during assembly, ensuring the assembly accuracy of the blade cover 3 and the blade structure 2, and further improving the performance and reliability of the water pump's plastic magnetic rotor.

[0047] The staggered step structure between the bottom edge of the cover 3 and the top edge of the rotor magnet 1 serves as a guide when disassembling the cover 3, facilitating the maintenance and upkeep of the water pump's plastic magnetic rotor, improving maintenance efficiency and reducing maintenance costs.

[0048] The support structure 5 and the blade cover 3 are integrally molded using injection molding, which ensures the dimensional accuracy and surface quality of the support structure 5, provides a strong guarantee for the precise assembly between the blade cover 3 and the blade structure 2, and improves the overall performance and stability of the entire water pump's plastic magnetic rotor.

[0049] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A plastic magnetic rotor for a water pump, characterized in that, The device includes an integrally formed rotor magnet (1) and a blade structure (2). The blade structure (2) has a blade cover (3). The rotor magnet (1) has a bearing (4) inside. The top surface of the inner wall of the blade cover (3) has a support structure (5). The lower end face of the support structure (5) is adapted to the curved shape of the upper end face of the blade structure (2) to provide contact support between the blade cover (3) and the blade structure (2). The support structure (5) has a positioning structure with the same number of blades as the blade structure (2) to realize the connection between the blade cover (3) and the blade structure (2). 3) Assembly and positioning with the blade structure (2): The support structure (5) is composed of several ribs. The lower end face of each rib forms a full curved surface contact with the upper end face of the blade of the blade structure (2). The positioning structure includes a first slot (7) and a first block (6) alternately distributed on the ribs of the support structure (5), and a second slot (8) and a second block (9) correspondingly set on the blade of the blade structure (2). The first block (6) and the second slot (8), and the second block (9) and the first slot (7) respectively form a bidirectional insertion fit.

2. The plastic magnetic rotor for a water pump according to claim 1, characterized in that: The first card block (6) and the second card block (9) are made of elastic material and form an interference fit with the corresponding first card slot (7) or second card slot (8).

3. The plastic magnetic rotor for a water pump according to claim 1, characterized in that: The top of the first card block (6) extends upward to form a first marking part (61), and the bottom of the second card slot (8) extends downward to form a second marking part (81). The first marking part (61) and the second marking part (81) are coaxially arranged.

4. A plastic magnetic rotor for a water pump according to claim 1, characterized in that: The bottom edge of the leaf cover (3) and the top edge of the rotor magnet (1) are provided with a staggered step structure to guide disassembly.

5. A plastic magnetic rotor for a water pump according to claim 1, characterized in that: The support structure (5) and the leaf cover (3) are integrally formed by injection molding.

6. A plastic magnetic rotor for a water pump according to claim 1, characterized in that: The groove walls of the first slot (7) and the second slot (8) are provided with guide slopes.

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