Pump cover assembly and electronic water pump applying same

Abstract

The utility model discloses a pump cover assembly and an electronic water pump using the pump cover assembly, and relates to the technical field of electronic water pumps and parts of the electronic water pumps, and the pump cover assembly at least comprises a pump cover body component and a pump cover end bearing. A pump cover end bearing mounting seat is arranged on the inner side of the pump cover body component, and a mounting hole is formed in the pump cover end bearing mounting seat; the pump cover end bearing is arranged in a mounting hole of the pump cover end bearing mounting seat, and at least one part of the pump cover end bearing can rotate relative to the pump cover end bearing mounting seat of the pump cover body component. The utility model mainly solves the problem of how to provide a new shaft core supporting seat structure for the electronic water pump; the pump cover end bearing mounting seat is arranged on the inner side of the pump cover body, and the pump cover end bearing is arranged in the pump cover end bearing mounting seat, so that the pump cover assembly is suitable for supporting a shaft-shaped body and can be effectively matched with a shaft core of a rotary structure, more novel structures are provided for the electronic water pump, the performance of the electronic water pump is improved, and the service life of the electronic water pump is prolonged. And the cost of the electronic water pump is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic water pump and its spare part technical field, concretely is a pump cover subassembly and the electronic water pump of application thereof. BACKGROUND

[0002] Electronic water pump has higher output efficiency and can realize accurate flow control, therefore, electronic water pump is widely used in car, household appliance and industrial equipment, for example, new energy automobile is usually configured with two or even more electronic water pumps to serve as the power source of the whole cooling system.

[0003] Rotor assembly is one of the core spare parts of electronic water pump, the rotor assembly of the electronic water pump in the prior art at least includes rotor support, magnetic ring sleeved on the rotor support and impeller arranged at one end of the rotor support, the stator assembly of the electronic water pump can generate a rotating magnetic field after being electrified, the magnetic ring of the rotor assembly is driven by the magnetic coupling of the rotating magnetic field, can rotate in the rotor cavity of the electronic water pump, and further drive the rotor support and the impeller to rotate together, the rotating impeller can drive the directional flow of liquid, thereby completing the basic function of the electronic water pump.

[0004] The Chinese utility model patent publication text with the publication number CN222162941U and the name "Integrated rotor assembly and electronic water pump applying same" discloses an integrated rotor assembly, the shaft core 2 is fixed relative to the rotor assembly body in the axial direction and the radial direction, so that the shaft core 2 can rotate with the rotor assembly body. In this way, the shaft core 2 can serve as a transmission component or a power output component of the electronic water pump, adding auxiliary power components and improving the performance of the electronic water pump.

[0005] However, the electronic water pump in the prior art usually embeds a bearing made of graphite or ceramic material in the rotor support of the rotor assembly, so that the rotor assembly is adapted to be supported on the shaft core and can rotate around the shaft core. That is, the shaft core of the electronic water pump in the prior art is configured as a fixed structure (rather than a rotating structure). Therefore, the support seat structure of the shaft core in the electronic water pump in the prior art, which is usually composed of a shaft core support arranged at the pump cover and a shaft core base arranged in the pump cavity, is also adapted to the shaft core of the fixed structure, but it is difficult to adapt to the shaft core of the rotating structure.

[0006] In summary, how to provide a new shaft core support seat structure for the electronic water pump to adapt to the shaft core of the rotating structure is one of the problems to be solved. UTILITY MODEL CONTENTS

[0007] The utility model discloses a pump cover subassembly and the electronic water pump of application thereof, and the shaft core support seat structure can effectively adapt to the shaft core of the rotating structure.

[0008] To achieve the above object, the utility model provides the following technical scheme: a pump cover subassembly at least includes pump cover body member and pump cover end bearing, the inner side of pump cover body member is equipped with pump cover end bearing mounting seat, forms installation hole at pump cover end bearing mounting seat, pump cover end bearing is suitable for supporting shaft body, pump cover end bearing is arranged in the installation hole of pump cover end bearing mounting seat, and at least a part of pump cover end bearing can rotate relative to the pump cover end bearing mounting seat of pump cover body member.

[0009] In the above technical scheme, the pump cover subassembly of the utility model further includes pump cover bushing member, the pump cover bushing member is rigid metal material, the pump cover end bearing is plastic material, the pump cover bushing member is embedded in the installation hole of pump cover end bearing mounting seat, and the outer wall of pump cover bushing member and the inner wall of installation hole of pump cover end bearing mounting seat are fixedly matched, the pump cover end bearing is embedded in the pump cover bushing member, and the pump cover end bearing can rotate relative to the pump cover bushing member.

[0010] In the above technical scheme, the outer surface of the pump cover bushing member is equipped with rotation stop structure.

[0011] In the above technical scheme, the pump cover end bearing at least includes sliding part, and the sliding part of the pump cover end bearing is embedded in the pump cover bushing member.

[0012] In the above technical scheme, the pump cover end bearing further includes flange part connected to one end of the sliding part, and the flange part of the pump cover end bearing is exposed to the pump cover bushing member and the pump cover end bearing mounting seat of the pump cover body member.

[0013] In the above technical scheme, the inner side of the pump cover body member is equipped with support arm, and the pump cover end bearing mounting seat is supported by the support arm, away from the inner wall of the pump cover body member, the water inlet and the water outlet.

[0014] An electronic water pump includes the above pump cover subassembly.

[0015] In the technical scheme, the electronic water pump further comprises a rotor-impeller assembly, a pump shell component and a stator assembly; the pump cover body component is combined with the pump shell component at the bottom of the pump cavity, so that the pump cover body component and the internal space of the pump shell component are communicated to form a pump cavity; the pump shell component is provided with a pump cavity end bearing mounting seat at the bottom of the pump cavity, the pump cavity end bearing mounting seat of the pump shell component is opposite to the pump cover end bearing mounting seat of the pump cover body component, and a pump cavity end bearing is embedded in the pump cavity end bearing mounting seat; the rotor-impeller assembly comprises a rotor body, a rotating shaft component and an impeller; the rotor body and the impeller are coaxially fixedly connected to the rotating shaft component; one end of the rotating shaft component of the rotor-impeller assembly is supported by the pump cavity end bearing in the pump cavity end bearing mounting seat, and the other end of the rotating shaft component is supported by the pump cover end bearing in the pump cover end bearing mounting seat; the stator assembly is fixed in the pump shell component and located outside the pump cavity; the stator assembly is adapted to magnetically couple and drive the rotor body of the rotor-impeller assembly to rotate, so as to drive the rotating shaft component and the impeller of the rotor-impeller assembly to rotate.

[0016] In the technical scheme, the electronic water pump further comprises a shielding shell component; the shielding shell component is arranged in the pump shell component to shield the pump cavity.

[0017] In the technical scheme, the pump cavity end bearing is made of plastic.

[0018] Compared with the prior art, the pump cover assembly and the electronic water pump using the same have the following beneficial effects: the pump cover assembly is provided with a pump cover end bearing mounting seat at the inner side of the pump cover body, and a pump cover end bearing is arranged in the pump cover end bearing mounting seat, so that the pump cover assembly is adapted to support the shaft-shaped body and can be effectively adapted to the shaft core of the rotary structure (the rotating shaft component of the rotor-impeller assembly), thereby providing more novel structures for the electronic water pump, improving the performance of the electronic water pump, and reducing the cost of the electronic water pump. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the pump cover assembly in the utility model.

[0020] Figure 2 It is an exploded view of the pump cover assembly in the utility model.

[0021] Figure 3 It is a perspective view of the electronic water pump in the utility model.

[0022] Figure 4 It is an exploded view of the electronic water pump in the utility model.

[0023] Figure 5The utility model discloses a cross section view of electronic water pump.

[0024] The figure mark is: 1, pump cover body member, 101, pump cover end bearing mounting seat, 101a, mounting hole, 102, support arm, 103, water inlet, 104, water outlet, 2, pump cover end bearing, 201, sliding part, 202, flange part, 3, pump cover bushing member, 301, rotation stop structure, 4, rotor - impeller assembly, 401, rotor body, 402, rotating shaft member, 403, impeller, 5, pump shell member, 501, pump cavity end bearing mounting seat, 502, pump cavity end bearing, 6, shield shell member, 7, stator assembly, 10, pump cavity. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the range of protection of the utility model.

[0026] The embodiment provides a pump cover assembly, which can be applied to an electronic water pump to serve as part of the shell structure of the electronic water pump and part of the pump cavity structure of the electronic water pump and can undertake the water inlet and water outlet functions of the electronic water pump.

[0027] Please refer to Figure 1 and Figure 2 The pump cover assembly of the embodiment at least comprises a pump cover body member 1 and a pump cover end bearing 2.

[0028] The pump cover body is an integrally injection-molded engineering plastic material half-shell member, which has an inner side and an outer side, and in the embodiment, the pump cover body is integrated with a water inlet 103 and a water outlet 104, which are integrally formed on the pump cover body and are short pipe-shaped structure features communicating the inner side and the outer side of the pump cover body.

[0029] The inner side of the pump cover body member 1 is provided with a pump cover end bearing mounting seat 101, and the pump cover end bearing mounting seat 101 is formed with a mounting hole 101a, and actually, the pump cover end bearing mounting seat 101 and the mounting hole 101a are integrally injection-molded with the pump cover body member 1.

[0030] The pump cover end bearing 2 is suitable for supporting a shaft-shaped body.

[0031] The pump cover end bearing 2 is arranged in the mounting hole 101a of the pump cover end bearing mounting seat 101, and at least a part of the pump cover end bearing 2 can rotate relative to the pump cover end bearing mounting seat 101 of the pump cover body member 1.

[0032] The pump cover end bearing mounting seat 101 is arranged on the inner side of the pump cover body, and the pump cover end bearing 2 is arranged in the pump cover end bearing mounting seat 101, so that the pump cover body is adapted to support the shaft-shaped body, and the pump cover assembly can be effectively adapted to the shaft core of the rotary structure.

[0033] Specifically, the pump cover assembly of the embodiment further comprises a pump cover bushing member 3 (for example, stainless steel or aluminum alloy), which is a rigid metal material and has a substantially cylindrical outer contour; the pump cover end bearing 2 is a plastic material, and in fact, the pump cover end bearing 2 is a one-piece injection-molded composite engineering plastic material member, which has a substantially cylindrical or annular outer contour; the pump cover bushing member 3 is embedded in the mounting hole 101a of the pump cover end bearing mounting seat 101, and the outer wall of the pump cover bushing member 3 is fixedly matched with the inner wall of the mounting hole 101a of the pump cover end bearing mounting seat 101; the pump cover end bearing 2 is embedded in the pump cover bushing member 3, and the pump cover end bearing 2 can rotate relative to the pump cover bushing member 3.

[0034] Further, the outer surface of the pump cover bushing member 3 is provided with a rotation stop structure 301 to avoid relative rotation between the pump cover bushing member 3 and the rotating body; in the embodiment, the rotation stop structure 301 is knurling arranged on the outer surface of the pump cover bushing member 3; in other embodiments, the rotation stop structure 301 can also be a key structure or a special-shaped structure arranged on the outer surface of the pump cover bushing member 3.

[0035] Please refer to Figure 2 The pump cover end bearing 2 at least comprises a sliding portion 201, and the sliding portion 201 of the pump cover end bearing 2 is embedded in the pump cover bushing member 3; in the embodiment, the pump cover end bearing 2 further comprises a flange portion 202 connected to one end of the sliding portion 201, and the flange portion 202 of the pump cover end bearing 2 is exposed to the pump cover bushing member 3 and the pump cover end bearing mounting seat 101 of the pump cover body member 1; it should be noted that the sliding portion 201 and the flange portion 202 are one-piece injection-molded structures, and both constitute the pump cover end bearing 2, wherein the flange portion 202 protrudes radially from the sliding portion 201; the arrangement of the flange portion 202 can limit the embedding depth of the pump cover end bearing 2, and the other side of the flange portion 202 of the pump cover end bearing 2 relative to the pump cover bushing member 3 can also be used as a thrust structure of the rotating body.

[0036] Further, the inner side of the pump cover body member 1 is configured with a support arm 102, which is actually a strip-shaped body structure feature integrally injection molded on the inner side of the pump cover body member 1; the pump cover end bearing mounting seat 101 is supported by the support arm 102, and is away from the inner wall of the pump cover body member 1, the water inlet 103 and the water outlet 104, so as to avoid the influence of the pump cover end bearing mounting seat 101 on the liquid medium flow channel of the electronic water pump.

[0037] The embodiment also provides an electronic water pump comprising the pump cover assembly.

[0038] The electronic water pump of the embodiment further comprises a rotor-impeller assembly 4, a pump shell member 5 and a stator assembly 7.

[0039] The pump shell member 5 is a half-shell member integrally injection molded of engineering plastic material, which is used as part of the shell structure of the electronic water pump and also as part of the pump cavity structure of the electronic water pump; the stator assembly 7 is formed by winding a predetermined number of turns of enameled wire on a stator core / stator support, and can generate a rotating magnetic field in the inner ring after being energized.

[0040] The pump cover body member 1 is covered on the pump shell member 5 (the two are fixed to each other by screws and sealed by a sealing ring), so that the interior space of the pump cover body member 1 and the pump shell member 5 are communicated to form a pump cavity 10 for the flow of liquid medium.

[0041] The pump shell member 5 is configured with a pump cavity end bearing mounting seat 501 at the bottom of the pump cavity 10, which is a structure feature integrally injection molded at the bottom of the pump shell member 5 in the embodiment; the pump cavity end bearing mounting seat 501 of the pump shell member 5 is in mutual alignment (specifically axial alignment) with the pump cover end bearing mounting seat 101 of the pump cover body member 1, and the pump cavity end bearing 502 is embedded in the pump cavity end bearing mounting seat 501; in the embodiment, the pump cavity end bearing 502 is made of plastic, i.e., it is a composite engineering plastic material member integrally injection molded, and its outer contour is generally cylindrical or annular.

[0042] The rotor-impeller assembly 4 comprises a rotor body 401, a rotating shaft member 402 and an impeller 403.

[0043] The rotor body 401 is a combination of several permanent magnets (also known as "magnetic tiles") inserted / inserted in the rotor core, which can rotate under the drive of the rotating magnetic field; the shaft member 402 is a shaft-shaped member made of metal material (such as stainless steel or aluminum alloy), the two ends of which are adapted to cooperate with the bearing; the impeller 403 is an engineering plastic material with several arc-shaped blades, which can produce centrifugal phenomenon to the fluid (liquid medium in this embodiment) around it when rotating, to drive the fluid to flow.

[0044] The rotor body 401 and the impeller 403 are coaxially fixedly connected at the shaft member 402; in this embodiment, the rotor body 401 is interference fit with the shaft member 402, or the rotor body 401 is laser welded at the shaft member 402; in this embodiment, the impeller 403 is interference fit with the shaft member 402 through the bushing.

[0045] The shaft member 402 of the rotor-impeller assembly 4 is supported by the pump cavity end bearing 502 in the pump cavity end bearing mounting seat 501 at one end, and is supported by the pump cover end bearing 2 in the pump cover end bearing mounting seat 101 at the other end, that is, the shaft member 402 of the rotor-impeller assembly 4 penetrates into the pump cavity end bearing 502 and the pump cover end bearing 2 respectively.

[0046] The stator assembly 7 is fixed in the pump shell member 5 and located outside the pump cavity 10; the stator assembly 7 is adapted to magnetically couple and drive the rotor body 401 of the rotor-impeller assembly 4 to rotate, thereby driving the shaft member 402 and the impeller 403 of the rotor-impeller assembly 4 to rotate.

[0047] Further, the electronic water pump of the embodiment further comprises a shielding shell member 6, which is an integrally formed engineering plastic member or a metal member (which needs to have magnetic conductivity), and the outer contour is generally cylindrical; the shielding shell member 6 is arranged in the pump shell member 5 to shield the pump cavity 10, in this embodiment, one end of the shielding shell member 6 is formed with a flange, which is clamped and fixed by the pump cover body member 1 and the pump shell member 5 to realize the fixation of the shielding shell member 6; in this embodiment, the stator assembly 7 is fixed in the pump shell member 5 and located outside the shielding shell member 6.

[0048] The electronic water pump of the embodiment, in use, passes specific driving electric energy to the stator assembly 7 through the driving circuit board integrated in the pump shell member 5 or the driver located outside the electronic water pump, so that the stator assembly 7 generates a rotating magnetic field in the inner ring; the rotor body 401 of the rotor-impeller assembly 4 can rotate under the driving of the rotating magnetic field, and in turn drive the rotating of the rotating shaft member 402 and the impeller 403 of the rotor-impeller assembly 4; when the impeller 403 rotates, it can generate centrifugal phenomenon to the fluid (liquid medium in the embodiment) around it to drive the directional flow of the fluid, so as to realize the basic function of the electronic water pump.

[0049] In the above process, the rotating shaft member 402 of the rotor-impeller assembly 4 will rotate, one end of which is supported by the pump cavity end bearing 502 in the pump cavity end bearing mounting seat 501, and the other end is supported by the pump cover end bearing 2 in the pump cover end bearing mounting seat 101, so as to rotate smoothly.

[0050] The pump cover assembly and the electronic water pump applying the same of the embodiment are configured with the pump cover end bearing mounting seat 101 on the inner side of the pump cover body, and the pump cover end bearing 2 in the pump cover end bearing mounting seat 101, so that the pump cover assembly is suitable for supporting the shaft-shaped body, and can be effectively adapted to the shaft core of the rotating structure (the rotating shaft member 402 of the rotor-impeller assembly 4 in the embodiment), so as to provide more new structures for the electronic water pump, improve the performance of the electronic water pump, and reduce the cost of the electronic water pump.

[0051] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pump cover assembly, characterized by, The pump cover assembly comprises at least a pump cover body member and a pump cover end bearing; The inner side of the pump cover body member is provided with a pump cover end bearing mounting seat, and a mounting hole is formed in the pump cover end bearing mounting seat; The pump cover end bearing is adapted to support the shaft-shaped body; The pump cover end bearing is arranged in the mounting hole of the pump cover end bearing mounting seat, and at least a part of the pump cover end bearing can rotate relative to the pump cover end bearing mounting seat of the pump cover body member.

2. The pump cover assembly of claim 1, wherein The pump cover assembly further comprises a pump cover bushing member made of rigid metal material; The pump cover end bearing is made of plastic material; The pump cover bushing member is arranged in the mounting hole of the pump cover end bearing mounting seat, and the outer wall of the pump cover bushing member is fixedly connected with the inner wall of the mounting hole of the pump cover end bearing mounting seat; The pump cover end bearing is arranged in the pump cover bushing member, and the pump cover end bearing can rotate relative to the pump cover bushing member.

3. The pump cover assembly of claim 2, wherein, The outer surface of the pump cover bushing member is provided with a rotation stop structure.

4. The pump cover assembly of claim 2 or 3, wherein, The pump cover end bearing comprises at least a sliding part; The sliding part of the pump cover end bearing is arranged in the pump cover bushing member.

5. The pump cover assembly of claim 4, wherein The pump cover end bearing further comprises a flange part connected to one end of the sliding part; The flange part of the pump cover end bearing is exposed outside the pump cover bushing member and the pump cover end bearing mounting seat of the pump cover body member.

6. The pump cover assembly of claim 1, wherein The inner side of the pump cover body member is provided with a support arm; The pump cover end bearing mounting seat is supported by the support arm, and is away from the inner wall of the pump cover body member, the water inlet and the water outlet.

7. An electronic water pump characterized by comprising: The pump cover assembly comprises the pump cover assembly according to any one of claims 1-6.

8. The electronic water pump of claim 7, wherein, The pump cover assembly further comprises a rotor-impeller assembly, a pump shell member and a stator assembly; The pump cover body member covers the pump shell member, so that the pump cover body member and the pump shell member are connected to form a pump cavity; The pump shell member is provided with a pump cavity end bearing mounting seat at the bottom of the pump cavity, the pump cavity end bearing mounting seat of the pump shell member is matched with the pump cover end bearing mounting seat of the pump cover body member, and a pump cavity end bearing is arranged in the pump cavity end bearing mounting seat; The rotor-impeller assembly comprises a rotor body, a shaft member and an impeller; The rotor body and the impeller are coaxially fixedly connected to the shaft member; One end of the shaft member of the rotor-impeller assembly is supported by the pump cavity end bearing arranged in the pump cavity end bearing mounting seat, and the other end of the shaft member is supported by the pump cover end bearing arranged in the pump cover end bearing mounting seat; The stator assembly is fixed in the pump shell member and located outside the pump cavity; The stator assembly is adapted to magnetically couple and drive the rotor body of the rotor-impeller assembly to rotate, so as to drive the shaft member and the impeller of the rotor-impeller assembly to rotate.

9. The electronic water pump of claim 8, wherein, The pump cover assembly further comprises a shielding shell member; The shielding shell member is arranged in the pump shell member to shield the pump cavity.

10. The electronic water pump according to claim 8 or 9, characterized in that The pump cavity end bearing is made of plastic material.

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