Automotive electronic water pump and mounting structure thereof

Abstract

The utility model discloses a vehicle electronic water pump and a mounting structure thereof, and belongs to the technical field of vehicle electronic water pumps. Comprising a water pump shell, a rotor gasket, a rotor assembly, a rubber sleeve, a mounting sleeve, a stator assembly, a circuit board assembly and a rear cover, and the stator assembly comprises a stator injection molding body, a coil assembly, a rotating shaft, a terminal contact pin and a supporting structure. The installation space is saved, a rubber installation frame of a traditional water pump is omitted, secondary manual alignment installation is not needed, and the assembly efficiency of the electronic water pump for the vehicle is improved; under the condition that enough strength is guaranteed, injection molding materials are saved, and the production cost is reduced; the cross-shaped rubber sleeve is adopted, the supporting structure wraps the upper side and the lower side of the convex ring during injection molding, the cross-shaped rubber sleeve is embedded in the supporting structure after demolding, and the design can avoid the problem that the rubber pad falls off after injection molding.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle electronic water pumps, in particular to a vehicle electronic water pump and a mounting structure thereof. Background Art

[0002] Automotive electronic water pumps have the advantages of energy saving, environmental protection, reduced fuel consumption, and improved vehicle performance, and have received widespread attention and demand from the market. Especially in the electric vehicle and plug-in hybrid vehicle markets, the market demand for automotive electronic water pumps is more urgent. Traditional mechanical water pumps cannot meet the high power and high efficiency requirements of electric vehicles, while automotive electronic water pumps can be intelligently adjusted according to different working conditions and needs to improve the overall performance of the vehicle.

[0003] At present, the traditional production method mostly adopts a structure in which the water pump assembly and the mounting frame are manufactured separately. The advantage of this structure is that the manufacturing and processing are relatively simple, however, its disadvantages are also obvious. In the subsequent assembly process, whether it is through manual assembly or tooling press assembly, the separately manufactured structure requires additional operation steps and time, which not only increases the manufacturing cost, but also may introduce errors in the assembly process, affecting the performance and stability of the water pump. Utility Model Content

[0004] The purpose of the utility model is to provide a vehicle electronic water pump and a mounting structure thereof to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a vehicle electronic water pump and its installation structure include a stator assembly, a rubber sleeve and a water pump housing, the stator assembly is installed with a mounting sleeve through the rubber sleeve, a rotor assembly is installed at one end of the stator assembly, a rear cover is installed at the other end of the stator assembly, a circuit board assembly is installed between the stator assembly and the rear cover, a rotor gasket is installed on the rotor assembly, the water pump housing is installed on the stator assembly, the rubber sleeve is used for whole vehicle installation and buffering, and the mounting sleeve is used for whole vehicle fixing.

[0006] A first chamber is formed between the water pump housing and the stator assembly, and the water pump housing and the stator assembly are connected by welding; a second chamber is formed between the stator assembly and the rear cover, and the circuit board assembly is assembled on the terminal pins of the stator assembly in the second chamber, and the stator assembly and the rear cover are connected by welding.

[0007] The stator assembly includes a stator injection molding body, in which a coil assembly and terminal pins are installed, a rotating shaft is installed on the stator injection molding body, a rotor assembly is installed on the rotating shaft, a water pump housing is installed on one end of the stator injection molding body, a back cover is installed on the other end of the stator injection molding body, and a circuit board assembly is installed between the stator injection molding body and the back cover.

[0008] First, put the wound coil assembly, rotating shaft and terminal pin into the mold, and pre-place the rubber sleeve in the mold. The stator assembly is formed by injection molding. The installed support structure is molded together with the stator injection molding body, and the rubber sleeve is also installed in the support structure. After the stator assembly is injection molded, the rotor assembly is installed on the rotating shaft. Then, the rotor gasket is installed on the rotor assembly. The rotor gasket protects the rotor assembly to prevent the rotor assembly from rubbing against the water pump housing and causing wear when the rotor assembly rotates. After the rotor assembly is installed, the water pump housing is installed on the stator assembly. Finally, the circuit board assembly and the rear cover are installed on the stator assembly. After the automotive electronic water pump is assembled, the installation sleeve is pressed into the support structure by tooling.

[0009] A support structure is installed on the stator injection molding body, a rubber sleeve is installed on the support structure, and the support structure and the stator injection molding body are injection-molded as one. The entire vehicle electronic water pump is installed on the whole vehicle using the support structure.

[0010] By integrating the stator assembly and the supporting structure through injection molding, installation space is saved, the rubber mounting bracket of the traditional water pump is saved, and manual re-alignment installation is not required, which improves the efficiency of water pump assembly assembly.

[0011] The outside of the rubber sleeve is a cross-shaped structure, and the inside of the rubber sleeve is a hollow cylindrical structure.

[0012] The cross-shaped rubber sleeve is provided with a convex ring in the middle axial position. After being placed in the mold for injection molding, the support structure on the stator assembly wraps the upper and lower sides of the convex ring during injection molding. After demolding, the cross-shaped mounting sleeve is embedded in the support structure. This design can avoid the problem of rubber pad falling off after injection molding. The rubber sleeve, the support structure and the mounting sleeve are all designed with interference fit. The height of the rubber sleeve should be higher than the mounting plane of the support structure to achieve the buffering effect after the whole vehicle is installed.

[0013] The supporting structure is a V-shaped structure, which can save more materials while ensuring sufficient strength.

[0014] The circuit board assembly receives electricity and electrical signals through terminal pins, and adjusts the current according to the temperature signal fed back by the temperature sensor. When the temperature is too high, the circuit board assembly controls the current to increase, and the current flows into the coil assembly in the stator assembly. The coil assembly generates a rotating magnetic field with a fixed direction and frequency under the action of the current. The magnetic field generated by the permanent magnet in the rotor assembly interacts with the rotating magnetic field generated by the coil assembly, causing the rotor assembly to rotate on the shaft. An impeller is installed on the rotor assembly, and the impeller rotates with the rotor assembly, and the liquid in the first chamber is discharged from the water outlet on the water pump housing through centrifugal force. The rotation of the rotor assembly causes the entire automotive electronic water pump to vibrate, and the rubber sleeve absorbs part of the vibration from the automotive electronic water pump to prevent the vibration from being transmitted to the normal state, thereby avoiding vibration and noise in the entire vehicle.

[0015] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the stator injection molded body and the supporting structure are integrally injection molded, so that the stator injection molded body, the supporting structure and the rubber sleeve are produced as a whole, saving installation space, saving the rubber mounting frame of the traditional water pump, and no manual re-alignment installation is required, thereby improving the efficiency of assembly of the automotive electronic water pump; the supporting structure is a V-shaped structure; it can save injection molding materials and reduce production costs while ensuring sufficient strength; a cross-shaped rubber sleeve is used, and the supporting structure wraps the upper and lower sides of the convex ring during injection molding, and the cross-shaped rubber sleeve is embedded in the supporting structure after demolding. This design can avoid the problem of rubber pad falling off after injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is an exploded view of the electronic water pump for vehicle of the utility model;

[0018] Figure 2 It is an exploded view of the stator assembly of the utility model;

[0019] Figure 3 It is an elevation view of the stator assembly of the utility model;

[0020] Figure 4 It is a cross-sectional view of the electronic water pump for vehicle of the utility model;

[0021] Figure 5 It is a vertical view of the rubber sleeve of the utility model;

[0022] In the figure: 1. water pump housing; 2. rotor gasket; 3. rotor assembly; 4. rubber sleeve; 5. mounting sleeve; 6. stator assembly; 7. circuit board assembly; 8. rear cover; 61. stator injection molding body; 62. coil assembly; 63. rotating shaft; 64. terminal pin; 65. supporting structure. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5The utility model provides a technical solution: an electronic water pump for a vehicle and its installation structure include a stator assembly 6, a rubber sleeve 4 and a water pump housing 1, the stator assembly 6 is installed with a mounting sleeve 5 through the rubber sleeve 4, a rotor assembly 3 is installed at one end of the stator assembly 6, a rear cover 8 is installed at the other end of the stator assembly 6, a circuit board assembly 7 is installed between the stator assembly 6 and the rear cover 8, a rotor gasket 2 is installed on the rotor assembly 3, the water pump housing 1 is installed on the stator assembly 6, the rubber sleeve 4 is used for vehicle installation and buffering, and the mounting sleeve 5 is used for vehicle fixing.

[0025] A first chamber is formed between the water pump housing 1 and the stator assembly 6, and the water pump housing 1 and the stator assembly 6 are connected by welding; a second chamber is formed between the stator assembly 6 and the rear cover 8, and the circuit board assembly 7 is assembled on the terminal pin 64 of the stator assembly 6 in the second chamber, and the stator assembly 6 and the rear cover 8 are connected by welding.

[0026] The stator assembly 6 includes a stator injection molding body 61, in which a coil assembly 62 and a terminal pin 64 are installed, a rotating shaft 63 is installed on the stator injection molding body 61, and a rotor assembly 3 is installed on the rotating shaft 63. A water pump housing 1 is installed at one end of the stator injection molding body 61, and a back cover 8 is installed at the other end of the stator injection molding body 61. A circuit board assembly 7 is installed between the stator injection molding body 61 and the back cover 8.

[0027] First, put the wound coil assembly 62, the rotating shaft 63 and the terminal pin 64 into the mold, and pre-place the rubber sleeve 4 in the mold, and form the stator assembly 6 by injection molding. The installed support structure 65 is molded together with the stator injection molding body 61, and the rubber sleeve 4 is also installed in the support structure 65. After the stator assembly 6 is injection molded, the rotor assembly 3 is installed on the rotating shaft 63, and then the rotor gasket 2 is installed on the rotor assembly 3. The rotor gasket 2 protects the rotor assembly 3 to prevent the rotor assembly 3 from rubbing against the water pump housing 1 and causing wear when the rotor assembly 3 rotates. After the rotor assembly 3 is installed, the water pump housing 1 is installed on the stator assembly 6, and finally the circuit board assembly 7 and the rear cover 8 are installed on the stator assembly 6. After the automotive electronic water pump is assembled, the installation sleeve 5 is pressed into the support structure 65 by the tooling.

[0028] The circuit board assembly 7 receives electricity and electrical signals through the terminal pin 64, and adjusts the current according to the temperature signal fed back by the temperature sensor. When the temperature is too high, the circuit board assembly 7 controls the current to increase, and the current flows into the coil assembly 62 in the stator assembly 6. The coil assembly 62 generates a rotating magnetic field with a fixed direction and frequency under the action of the current. The magnetic field generated by the permanent magnet in the rotor assembly 3 interacts with the rotating magnetic field generated by the coil assembly 62, so that the rotor assembly 3 rotates on the rotating shaft 63. An impeller is installed on the rotor assembly 3, and the impeller rotates with the rotor assembly 3, and the liquid in the first chamber is discharged from the water outlet on the water pump housing 1 by centrifugal force.

[0029] The stator injection molding body 61 is provided with a support structure 65, and the rubber sleeve 4 is provided on the support structure 65. The support structure 65 is integrally injection-molded with the stator injection molding body 61. The entire vehicle electronic water pump is installed on the vehicle by using the support structure 65.

[0030] By integrally injecting the stator assembly 6 and the support structure 65 , installation space is saved, the rubber mounting frame of the traditional water pump is saved, and manual re-alignment installation is not required, thereby improving the efficiency of the water pump assembly assembly.

[0031] The support structure 65 is a V-shaped structure, which can save more materials while ensuring sufficient strength.

[0032] The outside of the rubber sleeve 4 is a cross-shaped structure, and the inside of the rubber sleeve 4 is a hollow cylindrical structure; the cross-shaped rubber sleeve 4 is provided with a convex ring in the middle axial position. After being placed in the mold for injection molding, the support structure 65 on the stator assembly 6 wraps the upper and lower sides of the convex ring during injection molding. After demolding, the cross-shaped rubber sleeve 4 is embedded in the support structure 65. This design can avoid the problem of the rubber pad falling off after injection molding. The rubber sleeve 4, the support structure 65 and the installation sleeve 5 are all designed with interference fit. The height of the rubber sleeve 4 should be higher than the installation plane of the support structure 65 to achieve the buffering effect after the whole vehicle is installed.

[0033] The working principle of the utility model is as follows: first, the wound coil assembly 62, the rotating shaft 63 and the terminal pin 64 are placed into the mold, and the rubber sleeve 4 is pre-placed in the mold, and the stator assembly 6 is formed by injection molding, and the installed support structure 65 is molded together with the stator injection molding body 61, and the rubber sleeve 4 is also installed in the support structure 65. After the stator assembly 6 is injection molded, the rotor assembly 3 is installed on the rotating shaft 63, and then the rotor gasket 2 is installed on the rotor assembly 3. The rotor gasket 2 protects the rotor assembly 3 to prevent the rotor assembly 3 from rubbing against the water pump housing 1 when rotating and causing wear. After the rotor assembly 3 is installed, the water pump housing 1 is installed on the stator assembly 6, and finally the circuit board assembly 7 and the rear cover 8 are installed on the stator assembly 6. After the automotive electronic water pump is assembled, the installation sleeve 5 is pressed into the support structure 65 by the tooling.

[0034] The circuit board assembly 7 receives electricity and electrical signals through the terminal pin 64, and adjusts the current according to the temperature signal fed back by the temperature sensor. When the temperature is too high, the circuit board assembly 7 controls the current to increase, and the current flows into the coil assembly 62 in the stator assembly 6. The coil assembly 62 generates a rotating magnetic field with a fixed direction and frequency under the action of the current. The magnetic field generated by the permanent magnet in the rotor assembly 3 interacts with the rotating magnetic field generated by the coil assembly 62, so that the rotor assembly 3 rotates on the rotating shaft 63. An impeller is installed on the rotor assembly 3, and the impeller rotates with the rotor assembly 3. The liquid in the first chamber is discharged from the water outlet on the water pump housing 1 through centrifugal force. The rotation of the rotor assembly 3 causes the entire vehicle electronic water pump to vibrate. The rubber sleeve 4 absorbs part of the vibration from the vehicle electronic water pump to prevent the vibration from being transmitted to the normal state, thereby avoiding vibration and noise of the entire vehicle.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vehicle electronic water pump and its mounting structure, characterized in that: The invention comprises a stator assembly (6), a rubber sleeve (4) and a water pump housing (1); the stator assembly (6) is installed with a mounting sleeve (5) through the rubber sleeve (4); a rotor assembly (3) is installed at one end of the stator assembly (6); a rear cover (8) is installed at the other end of the stator assembly (6); a circuit board assembly (7) is installed between the stator assembly (6) and the rear cover (8); a rotor gasket (2) is installed on the rotor assembly (3); the water pump housing (1) is installed on the stator assembly (6); the rubber sleeve (4) is used for whole vehicle installation and buffering; and the mounting sleeve (5) is used for whole vehicle fixing.

2. The vehicle electronic water pump and its mounting structure according to claim 1, characterized in that: The stator assembly (6) comprises a stator injection molded body (61), a coil assembly (62) and a terminal pin (64) are installed in the stator injection molded body (61), a rotating shaft (63) is installed on the stator injection molded body (61), a rotor assembly (3) is installed on the rotating shaft (63), a water pump housing (1) is installed on one end of the stator injection molded body (61), a rear cover (8) is installed on the other end of the stator injection molded body (61), and a circuit board assembly (7) is installed between the stator injection molded body (61) and the rear cover (8).

3. The vehicle electronic water pump and its mounting structure according to claim 2, characterized in that: A support structure (65) is installed on the stator injection molded body (61), a rubber sleeve (4) is installed on the support structure (65), and the support structure (65) and the stator injection molded body (61) are injection molded integrally.

4. The vehicle electronic water pump and its mounting structure according to claim 3, characterized in that: The outside of the rubber sleeve (4) is a cross-shaped structure, and the inside of the rubber sleeve (4) is a hollow cylindrical structure.

5. The vehicle electronic water pump and the mounting structure thereof according to claim 3, characterized in that: The support structure (65) is a V-shaped structure.

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