Automobile electronic water pump and shell of automobile electronic water pump

Abstract

The utility model discloses an automobile electronic water pump and an outer shell of the automobile electronic water pump, and relates to the technical field of water pumps, the outer shell of the automobile electronic water pump comprises a body which is in a disc shape and is provided with a cavity, and the cavity is used for fixing a stator; the boss structure is arranged on one end face of the body in the axial direction and used for being connected with a sealing groove of the volute in a matched mode. The ultrasonic welding groove is formed in the other end face of the body in the axial direction and used for being welded to the rear cover; the stator winding fixing column is arranged in the cavity, extends in the axial direction of the body and is used for fixing a fixed shaft of the stator winding; and the rotor assembly groove is formed in the body, is spaced from the cavity and is used for mounting a rotor. According to the shell, the technical problem that the shell assembling process is complex is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to an automobile electronic water pump and a housing of the automobile electronic water pump. Background Art

[0002] The automotive electronic water pump is an important component of the automotive cooling system and a key component to achieve the automotive large and small circulation process.

[0003] An automotive electronic water pump includes components such as a housing, a stator and a rotor. The housing serves as the installation reference for other components, so its structure and strength are particularly important. In the prior art, the housing is a split structure. Taking CN210799118U as an example, the housing includes a first annular shell and a second annular shell with openings in the same direction. The first annular shell is inserted into the interior of the second annular shell. A first preset distance is provided between the outer wall of the first annular shell and the inner wall of the second annular shell so that the rotor can rotate between the first annular shell and the second annular shell.

[0004] When assembling a housing with a split structure, the first annular housing needs to be inserted into the interior of the second annular housing, which is a complicated process and inconvenient to install. Therefore, the housing of the automotive electronic water pump can be further optimized and improved. Utility Model Content

[0005] The utility model aims to provide an automobile electronic water pump and a shell of the automobile electronic water pump, which solves the technical problem of complex shell assembly process.

[0006] To achieve the above object, the utility model provides a housing of an automotive electronic water pump, comprising:

[0007] The body is in a disc shape and is provided with a cavity, and the cavity is used to fix the stator;

[0008] A boss structure is provided on one end surface of the body in the axial direction and is used for matching and connecting with the sealing groove of the volute;

[0009] An ultrasonic welding groove is provided on the other end surface of the body in the axial direction and is used for welding with the rear cover;

[0010] A stator winding fixing column is arranged in the chamber and extends along the axial direction of the body, and is used to fix the fixed axis of the stator winding;

[0011] The rotor assembly groove is arranged on the body and spaced apart from the chamber for installing the rotor.

[0012] Preferably, the housing further comprises:

[0013] A plurality of circuit board fixing columns and an ultrasonic welding groove are arranged on the same end surface of the main body for supporting and installing the circuit board.

[0014] Preferably, the inner side wall of the ultrasonic welding groove is also provided with a spark pattern.

[0015] Preferably, the circuit board fixing column is provided with an internal threaded hole.

[0016] Preferably, all circuit board fixing columns are evenly distributed on the end surface of the body.

[0017] Preferably, the opening side of the chamber and the opening side of the rotor assembly groove are respectively located on different end surfaces of the body in the axial direction, and the opening side of the chamber and the ultrasonic welding groove are located on the same end surface of the body in the axial direction.

[0018] Preferably, the housing is integrally injection molded.

[0019] The utility model also provides an automobile electronic water pump, comprising the above-mentioned shell.

[0020] Compared with the above-mentioned background technology, the housing of the automotive electronic water pump provided by the utility model utilizes the cavity of the main body to fix the stator, the boss structure is arranged on one end face of the main body in the axial direction, and the boss structure is used to cooperate and connect with the sealing groove of the volute; the ultrasonic welding groove is arranged on the other end face of the main body in the axial direction, and the ultrasonic welding groove is used to be welded with the rear cover; the stator winding fixing column is arranged in the cavity, and the stator winding fixing column extends along the axial direction of the main body, and the stator winding fixing column is used to fix the fixed axis of the stator winding; the rotor assembly groove is arranged on the main body, the rotor assembly groove is spaced apart from the cavity, and the rotor assembly groove is used to install the rotor.

[0021] It can be seen that the shell of the automotive electronic water pump configured in this way abandons the configuration method of the prior art in which the first annular shell is inserted into the interior of the second annular shell, but is provided with a chamber and a rotor assembly groove on the main body for installing the stator and the rotor respectively, and the boss structure on the main body and the sealing groove of the volute are used for connection, and the ultrasonic welding groove on the main body and the back cover are used for welding to ensure that the connection between the shell and other components is reliable. In addition, the stator winding fixing column is used to fix the fixed axis of the stator winding, avoiding the mold compression phenomenon caused by the shell and the fixed axis being injected together. While solving the complex technical problems in the shell assembly process, it also improves the yield rate and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A structural diagram of a housing of an automotive electronic water pump provided by an embodiment of the utility model;

[0024] Figure 2 A schematic diagram of another angle of the housing of the automotive electronic water pump provided by an embodiment of the utility model;

[0025] Figure 3 A cross-sectional view of a housing of an automotive electronic water pump provided by an embodiment of the utility model;

[0026] Figure 4 A partial cross-sectional view of an automotive electronic water pump provided by an embodiment of the utility model;

[0027] in:

[0028] Stator 01, volute 02, rear cover 03, fixed shaft 04, rotor 05, circuit board 06, body 10, chamber 11, boss structure 20, ultrasonic welding groove 30, stator winding fixing column 40, rotor assembly groove 50, circuit board fixing column 60. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] The housing of the automotive electronic water pump provided by the utility model is shown in the attached Figure 1 To Attachment Figure 4 The housing includes: a body 10, a boss structure 20, an ultrasonic welding groove 30, a stator winding fixing column 40 and a rotor assembly groove 50.

[0032] The main body 10 is arranged in a disc shape, and is provided with a chamber 11, and the chamber 11 is used to fix the stator 01; the boss structure 20 is arranged on an axial end face of the main body 10, and the boss structure 20 is used to cooperate with the sealing groove of the volute 02. When the boss structure 20 and the sealing groove of the volute 02 cooperate, the boss structure 20 can press the sealing ring in the sealing groove, thereby achieving the effect of sealing the main body 10 and the volute 02.

[0033] The ultrasonic welding groove 30 is arranged on the other end face of the main body 10 in the axial direction, and the ultrasonic welding groove 30 is used for welding with the back cover 03; the stator winding fixing column 40 is arranged in the chamber 11, and the stator winding fixing column 40 extends along the axial direction of the main body 10, and the stator winding fixing column 40 is used to fix the fixed axis 04 of the stator winding; the rotor assembly groove 50 is arranged on the main body 10, and the rotor assembly groove 50 is spaced apart from the chamber 11, and the rotor assembly groove 50 is used to install the rotor 05.

[0034] The connection method of the main body 10 and the back cover 03 can be specifically ultrasonic welding. Under the premise that the main body 10 and the back cover 03 are both made of plastic, when ultrasonic waves are used to act on the contact surface of the main body 10 and the back cover 03, high-frequency vibrations of tens of thousands of times per second will be generated. This high-frequency vibration with a certain amplitude transmits ultrasonic energy to the welding area through the upper weldment. Since the welding area, i.e., the interface of the two welds, has a large acoustic resistance, local high temperature will be generated. In addition, due to the poor thermal conductivity of plastic, it cannot be dissipated in time for a while, and it gathers in the welding area, causing the contact surface of the two plastics to melt rapidly. After a certain pressure is applied, it is fused into one. When the ultrasonic wave stops acting, the pressure is allowed to continue for a few seconds to solidify and form, so that a strong molecular chain is formed, and the purpose of welding is achieved. The welding strength can be close to the strength of the raw materials, that is, the welding process of the main body 10 and the back cover 03 is realized.

[0035] In addition, a stator winding fixing column 40 is provided inside the main body 10, and the stator winding fixing column 40 extends outward along the axis of the main body 10. A screw hole may also be provided inside the stator winding fixing column 40, which is locked by screws and cooperates with the circular cavity 11 to fix the stator 01.

[0036] In some embodiments, the housing further includes a plurality of circuit board fixing columns 60 , the circuit board fixing columns 60 and the ultrasonic welding grooves 30 are disposed on the same end surface of the body 10 , and the circuit board fixing columns 60 are used to support and install the circuit board 06 .

[0037] Three or more circuit board fixing columns 60 can be provided and evenly distributed on the end surface of the body 10 , so that the circuit board 06 can be effectively supported, acting on different positions of the circuit board 06 respectively, and guiding the assembly of the circuit board 06 .

[0038] In some embodiments, the circuit board fixing column 60 may also be provided with an internal threaded hole. When installing the circuit board 06, fasteners such as screws can be passed through the circuit board 06 and the internal threaded hole of the circuit board fixing column 60 to lock it, thereby effectively preventing the circuit board 06 from being damaged due to vibration during subsequent assembly and loading.

[0039] In some embodiments, the inner wall of the ultrasonic welding groove 30 is also provided with a spark pattern. It can be seen that when the main body 10 is welded and assembled with the back cover 03, the position offset of each component can be reduced, making the welding more firm and the sealing better. The process of ultrasonic welding can be referred to the above record and will not be expanded here.

[0040] In some embodiments, the opening side of the chamber 11 and the opening side of the rotor assembly groove 50 are respectively located on different axial end surfaces of the body 10, and the opening side of the chamber 11 and the ultrasonic welding groove 30 are located on the same axial end surface of the body 10.

[0041] Such an arrangement can fully utilize the internal space of the shell, optimize the shell structure, and make the various components not interfere with each other during operation. At the same time, the strength of the shell is optimized, while avoiding the inconvenience of installation in the prior art, it can also ensure the reliable use of the shell.

[0042] As attached Figure 3 As shown, the fixed shaft 04 is assembled at a later stage. After the fixed shaft 04 is assembled on the stator winding fixing column 40 , the rotor 05 is installed in the rotor assembly groove 50 , and the rotor 05 and the stator 01 are separated by a local structure of the body 10 .

[0043] Most preferably, the shell is integrally injection molded, that is, the main body 10, the chamber 11, the boss structure 20, the ultrasonic welding groove 30, the stator winding fixing column 40, the rotor assembly groove 50 and the circuit board fixing column 60 are integrally injection molded. After the shell is injection molded, the fixed shaft 04 is installed to realize the installation of subsequent components. It can be seen that the fixed shaft 04 is assembled after the shell is injection molded, which effectively avoids the compression molding phenomenon of the mold when the traditional shell and the fixed shaft are injection molded together, and also solves the problem of glue leakage and glue overflow in the gap between the fixed shaft and the mold when the traditional shell is injection molded, thereby improving the service life of the mold, and also improving the yield of the produced products, as well as improving the production efficiency.

[0044] The utility model also provides an automotive electronic water pump, including the above-mentioned shell, the automotive electronic water pump also includes the stator 01, volute 02, rear cover 03, fixed shaft 04, rotor 05 and circuit board 06 recorded above, and other components of the automotive electronic water pump can refer to the existing technology and will not be expanded here.

[0045] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A housing for an automotive electronic water pump, It is characterized in that include: A body (10) is provided in a disc shape, and the body (10) is provided with a chamber (11), and the chamber (11) is used to fix the stator (01); A boss structure (20) is provided on an end surface of the body (10) in the axial direction and is used for being matched and connected with a sealing groove of the volute (02); An ultrasonic welding groove (30) is provided on the other end surface of the body (10) in the axial direction and is used for welding with the rear cover (03); A stator winding fixing column (40), which is disposed in the chamber (11) and extends along the axial direction of the body (10) and is used to fix the fixed axis (04) of the stator winding; A rotor assembly groove (50) is provided on the body (10) and is spaced apart from the chamber (11) and is used for mounting the rotor (05).

2. The housing of the automotive electronic water pump according to claim 1, It is characterized in that The housing also includes: A plurality of circuit board fixing columns (60) and the ultrasonic welding groove (30) are arranged on the same end surface of the body (10) and are used to support and install the circuit board (06).

3. The housing of the automotive electronic water pump according to claim 1, It is characterized in that The inner side wall of the ultrasonic welding groove (30) is also provided with a spark pattern.

4. The housing of the automotive electronic water pump according to claim 2, It is characterized in that The circuit board fixing column (60) is provided with an internal threaded hole.

5. The housing of the automotive electronic water pump according to claim 2, It is characterized in that All of the circuit board fixing columns (60) are evenly distributed on the end surface of the body (10).

6. The housing of the automotive electronic water pump according to claim 1, It is characterized in that The opening side of the chamber (11) and the opening side of the rotor assembly groove (50) are respectively located on different end surfaces of the body (10) in the axial direction, and the opening side of the chamber (11) and the ultrasonic welding groove (30) are located on the same end surface of the body (10) in the axial direction.

7. The housing of the automotive electronic water pump according to claim 1, It is characterized in that The shell is integrally injection molded.

8. An automotive electronic water pump, It is characterized in that The invention comprises the housing as described in any one of claims 1 to 7.

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