Automotive electronic water pump and assembled stator assembly thereof

Abstract

The utility model discloses an automotive electronic water pump and an assembled stator assembly thereof, and relates to the technical field of automotive electronic water pumps, the electronic water pump comprises a water pump shell, the assembled stator assembly and a rear cover, the bottom end of the water pump shell is provided with a rotor gasket, the bottom end of the rotor gasket is provided with a rotor assembly, and the bottom end of the rotor assembly is provided with a mounting rack; the assembly type stator assembly is located at the bottom end of the installation frame, a circuit board assembly is arranged at the top end of the rear cover and located at the bottom end of the assembly type stator assembly, the assembly type stator assembly is matched with the installation frame, and a center shaft is arranged at the top end of the assembly type stator assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic water pump technology, specifically an automotive electronic water pump and its assembled stator assembly. Background Technology

[0002] Currently, most automotive electronic water pumps on the market use either a plastic-encapsulated integrated stator assembly or a water-proof sleeve structure stator assembly that is screwed and fastened as a whole. However, the water-proof sleeve structure that is screwed and fastened as a whole has a drawback: it cannot perform sealing tests and potting operations on the stator assembly alone. The water pump assembly must be fully assembled before the corresponding operations can be performed. Summary of the Invention

[0003] The purpose of this invention is to provide an automotive electronic water pump and its assembled stator assembly to solve the problems raised in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vehicle electronic water pump and its assembled stator assembly. The assembled stator assembly includes a water-proof sleeve shell, a coil assembly, a sealing ring, a housing, and screws. The coil assembly is located between the water-proof sleeve shell and the housing. An upper anti-misalignment block is provided on the outer wall of the water-proof sleeve shell, and the upper anti-misalignment block is fixedly connected to the water-proof sleeve shell. A lower anti-misalignment block is provided on the outer wall of the housing, and the lower anti-misalignment block is fixedly connected to the outer wall of the housing. The upper and lower anti-misalignment blocks cooperate with each other. The sealing ring is located at the top of the housing and is used to prevent external media from entering the stator. The water-proof sleeve shell and the housing are connected by screws.

[0005] Specifically, the water-proof sleeve outer shell and the housing are a shell structure used to install the coil assembly. The sealing ring is first assembled on the housing, and then assembled with the water-proof sleeve outer shell by screws. The screws are tightened from the housing towards the water-proof sleeve outer shell. The upper anti-misalignment blocks are arranged in a circle on the water-proof sleeve outer shell, and the lower anti-misalignment blocks are arranged in a circle on the housing. The bottom of the upper anti-misalignment block has a protrusion, and the lower anti-misalignment block has a groove. The groove and the protrusion cooperate, so that during installation, the two are combined to prevent shaking during the tightening of the screws.

[0006] The water-proof sleeve outer shell is provided with a positioning protrusion, which is fixedly connected to the water-proof sleeve outer shell and cooperates with the coil assembly. The bottom end of the water-proof sleeve outer shell is provided with an annular groove and a guide block. The top end of the housing is provided with a snap-fit ​​block, which is fixedly connected to the housing and cooperates with the annular groove.

[0007] Specifically, the coil assembly is fitted onto the waterproof sleeve shell, with the bottom end of the coil assembly engaging with the inner wall of the housing. When the waterproof sleeve shell and the housing are assembled, the coil assembly is located in the cavity between the waterproof sleeve shell and the housing. The top end of the coil assembly is restricted by the positioning protrusion of the waterproof sleeve shell, and the bottom end of the coil assembly engages with the bottom end of the inner wall of the housing. The guide block is used to engage with the coil assembly to solve the pressure ring problem. The waterproof sleeve shell and the housing are connected by a snap-fit ​​block and an annular groove to allow them to be installed together. The snap-fit ​​block and the annular groove also block the potting adhesive, solving the problem of adhesive entering the sealing groove.

[0008] The bottom of the coil assembly is provided with a positioning component, which is fixedly connected to the coil assembly. A positioning groove A is provided on the inner wall of the housing, and the positioning component is fixedly engaged with the positioning groove A.

[0009] Specifically, there are three positioning components, all of which are perpendicular to the horizontal line to facilitate the installation of the coil assembly. They are located at the bottom of the coil assembly and are fixedly connected to the housing structure in the coil assembly. Positioning groove A is used to cooperate with the positioning components so that the coil assembly is stable on the housing when it is installed with the housing, reducing the number of operation steps for the user.

[0010] The coil assembly has an adhesive potting groove at the bottom and a pin pre-wrapping assembly on the housing.

[0011] Specifically, the water-proof sleeve and coil are assembled first, and one side is positioned axially through the structure. Then, the assembly of the water-proof sleeve and coil and the assembly of the housing and sealing ring are assembled together and fixed with screws. Then, glue is poured from the bottom potting groove. After the potting glue solidifies, it plays the role of fixing the other side axially. In terms of structural design, stator pressure ring parts are saved. The pin pre-wrap assembly is used for electrical connection with the external structure. There are three pin heads in the pin pre-wrap assembly. There are two pin pre-wrap assemblies. One pin pre-wrap assembly is used for connection with the external structure. The other pin pre-wrap assembly is located at the bottom of the housing and is used for electrical connection with the circuit board assembly. The pin pre-wrap assembly at the bottom has a glue dotting groove. The glue dotting groove at the bottom of the pin pre-wrap assembly in the housing is used for sealing. Since plastic and metal cannot be completely sealed after injection molding, there are often air leaks. This is solved by glue dotting.

[0012] The bottom of the assembled stator assembly is provided with a circuit board assembly, and the circuit board assembly has a positioning groove B, which cooperates with the end of the positioning component.

[0013] Specifically, during installation, positioning groove B and positioning groove A are on the same central axis. Thus, when the waterproof sleeve shell, the housing, and the circuit board assembly are installed together, the positioning component on the waterproof sleeve shell will pass through positioning groove A, and the end of the positioning component will cooperate with positioning groove B, thereby fixing the three together and installing them through the structure.

[0014] The assembled stator assembly has a central shaft at the top and a knurled edge at the bottom.

[0015] Specifically, its knurled edges are used to ensure that the central shaft will not loosen after injection molding.

[0016] The electronic water pump includes a pump housing, an assembled stator assembly, and a rear cover. The bottom of the pump housing is provided with a rotor washer, the bottom of the rotor washer is provided with a rotor assembly, the bottom of the rotor assembly is provided with a mounting bracket, the assembled stator assembly is located at the bottom of the mounting bracket, the top of the rear cover is provided with a circuit board assembly, the circuit board assembly is located at the bottom of the assembled stator assembly, and the assembled stator assembly cooperates with the mounting bracket.

[0017] Specifically, the pump housing serves as the top cover, the mounting bracket is the connector used to connect with the external structure, and the rear housing is the bottom cover. The pump housing and rear housing provide a sealing and protective function. The screw holes for the water-proof sleeve on the pump housing are designed with a tapered structure. Figure 1 , Figure 2 As shown, this design effectively solves the problem of interference during pump housing welding. The pump housing is snapped into the outer shell of the water-proof sleeve, the mounting bracket is snapped into the outer wall of the housing, the rear cover is snapped into the bottom of the housing, the rotor assembly is mounted on the central shaft, and the circuit board assembly is installed at the bottom of the assembled stator assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. In this utility model, the coil assembly is sleeved on the water-proof sleeve shell. The top of the coil assembly is restricted by the positioning protrusion of the water-proof sleeve shell. The positioning part in the bottom of the coil assembly cooperates with the positioning groove A at the bottom of the inner wall of the housing. The water-proof sleeve shell and the housing cooperate with the annular groove through the snap-fit ​​block. Thus, during installation, the assembled stator assembly can be individually sealed and potted with glue. By using glue with different thermal conductivity, different temperature rise requirements can be met for different operating conditions.

[0020] 2. In this utility model, the outer shell of the water-proof sleeve and the machine housing are connected by a snap-fit ​​block and an annular groove to install the two together. The snap-fit ​​block and the annular groove also block the potting adhesive, thus solving the problem of adhesive entering the sealing groove.

[0021] 3. In this utility model, the guide block on the outer shell of the water-proof sleeve cooperates with the coil assembly, thereby effectively solving the problem of the pressure ring and improving the installation efficiency.

[0022] 4. In this utility model, the water-proof sleeve and the coil are assembled first, positioned axially by the structure, and then fixed by potting glue, which can save stator pressure ring parts in the design. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the overall exploded view of this utility model;

[0025] Figure 3 This is a schematic diagram of the exploded view of the assembled stator assembly of this utility model;

[0026] Figure 4 This is a schematic diagram of the adhesive filling tank of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the cross-sectional view of the casing of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the central axis of this utility model;

[0029] Figure 7 This is a structural schematic diagram of the cross-sectional view of the outer shell of the water-proof sleeve of this utility model;

[0030] Figure 8 This is a schematic diagram of the circuit board assembly of this utility model;

[0031] Figure 9 for Figure 5 A magnified view of a portion of the view (A).

[0032] In the diagram: 1. Pump housing; 21. Waterproof sleeve housing; 211. Upper anti-misalignment block; 212. Positioning protrusion; 213. Annular groove; 214. Guide block; 22. Coil assembly; 221. Glue potting groove; 23. Sealing ring; 24. Housing; 241. Lower anti-misalignment block; 242. Snap-fit ​​block; 243. Positioning groove A; 25. Screw; 26. Positioning component; 3. Rear cover; 4. Rotor washer; 5. Rotor assembly; 6. Mounting bracket; 7. Circuit board assembly; 71. Positioning groove B; 8. Central shaft; 81. Knurled edge. Detailed Implementation

[0033] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] Example: Figures 1-9As shown, this utility model provides a technical solution for an automotive electronic water pump and its assembled stator assembly. The assembled stator assembly includes a water-proof sleeve shell 21, a coil assembly 22, a sealing ring 23, a housing 24, and screws 25. The coil assembly 22 is located between the water-proof sleeve shell 21 and the housing 24. The outer wall of the water-proof sleeve shell 21 is provided with an upper anti-misalignment block 211, which is fixedly connected to the water-proof sleeve shell 21. The outer wall of the housing 24 is provided with a lower anti-misalignment block 241, which is fixedly connected to the outer wall of the housing 24. The upper anti-misalignment block 211 and the lower anti-misalignment block 241 cooperate with each other. The sealing ring 23 is located at the top of the housing 24 and is used to prevent external media from entering the stator. The water-proof sleeve shell 21 and the housing 24 are connected by screws 25.

[0035] Specifically, the water-proof sleeve outer shell 21 and the housing 24 form a shell structure for installing the coil assembly 22. The sealing ring 23 is first assembled on the housing 24 and then assembled with the water-proof sleeve outer shell 21 by screws 25. The screws 25 are tightened from the housing 24 toward the water-proof sleeve outer shell 21. The upper anti-misalignment blocks 211 are arranged in a circle on the water-proof sleeve outer shell 21, and the lower anti-misalignment blocks 241 are arranged in a circle on the housing 24. The lower anti-misalignment block 241 has a protrusion at the bottom and a groove. The groove and the protrusion cooperate to prevent shaking during installation when the screws 25 are tightened.

[0036] like Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 9 As shown, the water-proof sleeve outer shell 21 is provided with a positioning protrusion 212, which is fixedly connected to the water-proof sleeve outer shell 21. The positioning protrusion 212 cooperates with the coil assembly 22. The bottom end of the water-proof sleeve outer shell 21 is provided with an annular groove 213 and a guide block 214. The top end of the housing 24 is provided with a snap-fit ​​block 242, which is fixedly connected to the housing 24 and cooperates with the annular groove 213.

[0037] Specifically, the coil assembly 22 is fitted onto the waterproof sleeve shell 21, and the bottom end of the coil assembly 22 mates with the inner wall of the housing 24. When the waterproof sleeve shell 21 and the housing 24 are assembled, the coil assembly 22 is located in the cavity between the waterproof sleeve shell 21 and the housing 24. The top end of the coil assembly 22 is restricted by the positioning protrusion 212 of the waterproof sleeve shell 21, and the bottom end of the coil assembly 22 mates with the bottom end of the inner wall of the housing 24. The guide block 214 is used to mate with the coil assembly 22 to solve the problem of the pressure ring. The waterproof sleeve shell 21 and the housing 24 are installed together by the engagement block 242 and the annular groove 213. The engagement block 242 and the annular groove 213 also block the potting glue, solving the problem of glue entering the sealing groove.

[0038] like Figures 3-5 As shown, the bottom of the coil assembly 22 is provided with a positioning member 26, which is fixedly connected to the coil assembly 22. The inner wall of the housing 24 is provided with a positioning groove A243, and the positioning member 26 is fixedly engaged with the positioning groove A243.

[0039] Specifically, there are three positioning components 26, all of which are perpendicular to the horizontal line to facilitate the installation of the coil assembly 22. They are located at the bottom of the coil assembly 22 and are fixedly connected to the housing structure in the coil assembly 22. The positioning groove A243 is used to cooperate with the positioning component 26 so that the coil assembly 22 is stable on the housing 24 when it is installed with the housing 24, reducing the number of operation steps for the user.

[0040] like Figures 3-5 As shown, the coil assembly 22 has an adhesive potting groove 221 at the bottom and the housing 24 has a pin pre-wrapping assembly.

[0041] Specifically, the water-proof sleeve and coil are assembled first, and one side is positioned axially through the structure. Then, the components assembled with the water-proof sleeve shell 21 and coil assembly 22, and the components assembled with the housing 24 and sealing ring 23 are assembled together and fixed with screws 25. Then, glue is poured from the bottom glue potting groove 221. After the potting glue solidifies, it plays the role of fixing the other side axially. In terms of structural design, stator pressure ring parts are saved. The pin pre-wrap assembly is used for electrical connection with the external structure. The pin pre-wrap assembly has three pin heads. There are two pin pre-wrap assemblies. One pin pre-wrap assembly is used for connection with the external structure. The other pin pre-wrap assembly is located at the bottom of the housing 24 and is used for electrical connection with the circuit board assembly 7. The pin pre-wrap assembly at its bottom has a glue dotting groove. The bottom glue potting groove 221 of the pin pre-wrap in the housing 24 is used for sealing. Since plastic and metal cannot be completely sealed after injection molding, there are often air leaks. This is solved by glue dotting.

[0042] like Figure 8 As shown, the bottom of the assembled stator assembly is provided with a circuit board assembly 7, and the circuit board assembly 7 has a positioning groove B71, which cooperates with the end of the positioning component 26.

[0043] Specifically, during installation, positioning groove B71 and positioning groove A243 are on the same central axis 8 line. Thus, when the waterproof sleeve shell 21, the housing 24 and the circuit board assembly 7 are installed together, the positioning part 26 on the waterproof sleeve shell 21 will pass through the positioning groove A243, and the end of the positioning part 26 will cooperate with the positioning groove B71, thereby fixing the three together and installing them through the structure.

[0044] like Figure 6 As shown, the top of the assembled stator assembly is provided with a central shaft 8, and the bottom of the central shaft 8 is provided with a knurled edge 81.

[0045] Specifically, the knurled edge 81 is used to ensure that the central shaft 8 will not loosen after injection molding.

[0046] like Figures 1-9 As shown, the electronic water pump includes a water pump housing 1, an assembled stator assembly and a rear cover 3. The bottom of the water pump housing 1 is provided with a rotor washer 4, the bottom of the rotor washer 4 is provided with a rotor assembly 5, the bottom of the rotor assembly 5 is provided with a mounting bracket 6, the assembled stator assembly is located at the bottom of the mounting bracket 6, the top of the rear cover 3 is provided with a circuit board assembly 7, the circuit board assembly 7 is located at the bottom of the assembled stator assembly, and the assembled stator assembly cooperates with the mounting bracket 6.

[0047] Specifically, the pump housing 1 is the top cover, the mounting bracket 6 is the connector for connecting to the external structure, and the rear housing is the bottom cover. The pump housing 1 and the rear housing provide a sealing and protective function. The water-proof sleeve screw 25 hole on the pump housing 1 is designed with a conical structure, such as... Figure 1 , Figure 2 As shown, the problem of interference in the welding of the water pump housing 1 is effectively solved. The water pump housing 1 is snapped to the outer shell 21 of the water-proof sleeve, the mounting bracket 6 is snapped to the outer wall of the housing 24, the rear cover 3 is snapped to the bottom of the housing 24, the rotor assembly 5 is mounted on the central shaft 8, and the circuit board assembly 7 is installed at the bottom of the assembled stator assembly.

[0048] Working principle: The user first assembles the modular stator assembly. The water-proof sleeve shell 21 is the top cover, and the housing 24 is the bottom cover. The coil assembly 22 is located between the two, and the coil assembly 22 is fitted onto the water-proof sleeve shell 21. The top of the coil assembly 22 is restricted by the positioning protrusion 212 of the water-proof sleeve shell 21. The positioning part 26 at the bottom of the coil assembly 22 cooperates with the positioning groove A243 at the bottom of the inner wall of the housing 24. The water-proof sleeve shell 21 and the housing 24 cooperate with the annular groove 213 through the snap-fit ​​block 242. The upper anti-misalignment block 211 and the lower anti-misalignment block 241 are fixedly installed by screws 25. The whole assembly is assembled by its own structure. During the overall assembly, the water pump housing 1 is the top cover and is connected to the top of the water-proof sleeve housing 21. The sealing ring 23 is located between the water-proof sleeve housing 21 and the machine housing 24. The rear cover 3 is the bottom cover and is connected to the bottom of the machine housing 24. Finally, the machine housing 24 and the water-proof sleeve are sealed by potting glue. This allows the machine housing 24 and the water-proof sleeve to be assembled into one unit first, and then the air tightness is tested. Then, the heat dissipation glue is potted based on the optimization of motor heat dissipation.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An assembled stator assembly, characterized in that: The assembled stator assembly includes a water-proof sleeve shell (21), a coil assembly (22), a sealing ring (23), a housing (24), and screws (25). The coil assembly (22) is located between the water-proof sleeve shell (21) and the housing (24). The outer wall of the water-proof sleeve shell (21) is provided with an upper anti-misalignment block (211), and the outer wall of the housing (24) is provided with a lower anti-misalignment block (241). The upper anti-misalignment block (211) and the lower anti-misalignment block (241) cooperate with each other. The sealing ring (23) is located at the top of the housing (24). The sealing ring (23) is used to prevent external media from entering the stator. The water-proof sleeve shell (21) and the housing (24) are connected by screws (25).

2. The assembled stator assembly according to claim 1, characterized in that: The water-proof sleeve outer shell (21) is provided with a positioning protrusion (212), the positioning protrusion (212) is fixedly connected to the water-proof sleeve outer shell (21), the positioning protrusion (212) cooperates with the coil assembly (22), the bottom end of the water-proof sleeve outer shell (21) is provided with an annular groove (213), the bottom end of the water-proof sleeve outer shell (21) is provided with a guide block (214), the top end of the housing (24) is provided with a snap-fit ​​block (242), the snap-fit ​​block (242) is fixedly connected to the housing (24), and the snap-fit ​​block (242) cooperates with the annular groove (213).

3. The assembled stator assembly according to claim 2, characterized in that: The bottom end of the coil assembly (22) is provided with a positioning element (26), which is fixedly connected to the coil assembly (22). The inner wall of the housing (24) is provided with a positioning groove A (243), and the positioning element (26) is fixedly engaged with the positioning groove A (243).

4. The assembled stator assembly according to claim 3, characterized in that: The coil assembly (22) has an adhesive potting groove (221) at the bottom and the housing (24) has a pin pre-wrapping assembly.

5. The assembled stator assembly according to claim 4, characterized in that: The bottom of the assembled stator assembly is provided with a circuit board assembly (7), and the circuit board assembly (7) has a positioning groove B (71), which cooperates with the end of the positioning component (26).

6. The assembled stator assembly according to claim 5, characterized in that: The assembled stator assembly has a central shaft (8) at the top and a knurled edge (81) at the bottom.

7. An automotive electronic water pump using an assembled stator assembly, characterized in that: The electronic water pump includes a water pump housing (1), an assembled stator assembly and a rear cover (3). The bottom of the water pump housing (1) is provided with a rotor washer (4). The bottom of the rotor washer (4) is provided with a rotor assembly (5). The bottom of the rotor assembly (5) is provided with a mounting bracket (6). The assembled stator assembly is located at the bottom of the mounting bracket (6). The top of the rear cover (3) is provided with a circuit board assembly (7). The circuit board assembly (7) is located at the bottom of the assembled stator assembly. The assembled stator assembly cooperates with the mounting bracket (6).

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