CN217789429U - Motor, electronic pump and electronic valve - Google Patents

Abstract

The utility model relates to a motor, it includes stator module and rotor subassembly, stator module includes stator core and stator winding, the motor still includes the lead frame, the lead frame includes electric insulation's three strap each other, and every strap corresponds a looks, and every strap includes pin and joint, and is individual the pin is used for transmitting the three-phase electricity that comes from external power source to corresponding the strap, the joint will three-phase electricity transmit extremely in the stator winding of motor. The utility model discloses still relate to an electronic pump and an electronic valve including above-mentioned motor. Adopt according to the utility model discloses a motor for can reliably and steadily guide three-phase electric power to stator winding through the lead frame.

Description

Motor, electronic pump and electronic valve

Technical Field

The utility model relates to a motor field especially relates to a motor and including electronic pump and the electronic valve of this motor.

Background

Electric motors are increasingly used in various fields. A three-phase motor is a type of motor, and its principle is that when three-phase stator windings of the motor are supplied with three-phase alternating current, a rotating magnetic field is generated, and the rotating magnetic field cuts a rotor winding, thereby generating an induced current in the rotor winding.

However, in actual practice, there is at least one of the following problems: the stator winding and the external connection structure are unstable and easily cause quality problems, the insulation problem after connection needs to be additionally and independently considered, the manufacturing process is complicated, the convenience and the rapidness are not high, the precision requirement on the process is high, and the defects of high precision control difficulty and the like exist.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a motor, it includes stator module and rotor subassembly, stator module includes stator core and stator winding, the motor still includes the lead frame, the lead frame includes three strap of electrical insulation each other, and every strap corresponds a looks, and every strap includes pin and joint, and is respectively the pin is used for transmitting the three-phase electricity that comes from external power source to corresponding the strap, the joint will the three-phase electricity transmit to in the stator winding of motor

Advantageously, each of said metal strips comprises two tabs, the two tabs of each of said metal strips being angularly disposed 180 ° apart from each other.

Advantageously, the joints on three metal strips are equally angularly spaced in the circumferential direction of 360 ° by 60 °.

Advantageously, the joints are in the form of jaws, each for holding a portion of the winding coil of a respective phase.

Advantageously, the jaws and the winding coil are held fixed to each other by welding and are electrically conducted to each other by melting a paint coat of the winding coil at the time of welding.

Advantageously, all the parts of the metal strips except the pins are covered with an electrically insulating coating.

Advantageously, the lead frame is injection molded in one piece.

Advantageously, each metal strip includes one or more locating holes for cooperating with locating elements on the injection mould to maintain the relative position of the respective metal strips during injection.

According to another aspect of the present invention, it provides an electronic pump, which is an electronic oil pump or an electronic water pump, the electronic pump including the above-mentioned motor.

According to a further aspect of the present invention, an electronic valve is provided, which includes the above-mentioned electronic pump.

Through adopting according to the utility model discloses a motor can reach one of following beneficial effect at least: can reliably and stably guide three-phase electric power to stator winding in, whole lead frame becomes integrative piece through injection moulding, and it can be kept on stator module steadily, keeps stable in structure, promotes the quality reliability of product, and manufacturing process convenient and fast is not high to the required precision of technology, further promotes the product yield, has reduced manufacturing cost, has improved the market competition of product.

Drawings

The above and other features and advantages of the present invention will become more readily understood from the following description with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of a lead frame according to an embodiment of the present invention before injection molding;

FIG. 2 shows the mating relationship between a tab in the form of a claw included on the metal strip and the winding coil;

fig. 3 is a schematic structural view of a lead frame according to an embodiment of the present invention after the lead frame is formed into an integral piece by injection molding; and

fig. 4 is a schematic view of the mounting of the one-piece lead frame shown in fig. 3 to a stator assembly.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention to those skilled in the art. The various aspects, features, embodiments and advantages described below are for illustrative purposes only and should not be considered elements or limitations of the claims except where explicitly recited in a claim. In addition, terms such as "first," "second," and the like, which are used hereinafter to describe elements of the present application, are used only to distinguish the elements and are not intended to limit the nature, sequence, order, or number of the elements. Furthermore, it is to be noted that in the present description, identical and/or functionally identical technical features are provided with the same or similar reference signs.

The stator winding of an electric machine (e.g. a three-phase machine) usually has six outgoing wires for connection to an external power source. In order to transmit the three-phase electricity to the stator winding more reliably and stably, the utility model provides an electric machine, it includes lead frame 1, and this lead frame 1 is through injection moulding as an organic whole (see fig. 3). Referring particularly to fig. 4, a one-piece lead frame 1 will typically be disposed at one end of a stator assembly 8 of an electric machine, with six taps from the lead frame 1 being used as six outlet taps for the stator windings for eventual communication to an external power source via three pins corresponding to the different phases.

Specifically, as shown in fig. 1, the lead frame 1 includes three metal strips 2 electrically insulated from each other, each metal strip 2 corresponding to one phase, each metal strip including one Pin 3 or Pin and two tabs 4, the three pins 3 included in the three metal strips 2 for transmitting three-phase power from the external power source to the metal strips 2 and further to three-phase stator windings of a motor through the six tabs 4. The two joints 4 on each metal strip 2 are angularly arranged at 180 ° from each other, and preferably six joints 4 included on three metal strips 2 are equally angularly spaced at 60 ° in the circumferential direction of 360 °. For example, with reference to fig. 1, a metal strip 2 'corresponding to a first phase comprises a pin 3' corresponding to this first phase and two contacts 4 'angularly spaced from each other by 180 °, a metal strip 2 "corresponding to a second phase comprises a pin 3" corresponding to this second phase and two contacts 4 "angularly spaced from each other by 180 °, and a metal strip 2"' corresponding to a third phase comprises a pin 3 "'corresponding to this third phase and two contacts 4"' angularly spaced from each other by 180 °. The six joints are spaced at equal angles, namely 60 °, however, the angular spacing of 60 ° is only exemplary and not limiting, and the six joints may also be spaced at unequal angles, which is not limited by this embodiment, and in actual operation, the six joints may also be set as required according to actual operating conditions.

Preferably, the metal strip 2 takes the form of a copper strip and is formed by stamping. The pins 3 and the tabs 4 are formed by bending portions of the material after stamping the metal strip. All portions of each metal strip 2 except the pin 3 are covered with an electrically insulating coating.

According to an advantageous embodiment, the joint 4 takes the form of jaws, each for holding a portion of the winding coil of a respective phase. After the winding coil 5 is held by the jaws, the outer parts 6 of the jaws can be pressed inwards (in the direction of the arrows in fig. 2) in order to better hold the winding coil 5. Referring to fig. 4 in particular, when the lead frame 1 is disposed on one of the end portions of the stator assembly 8, the tabs 4 formed on the metal tape 2 in the form of claws respectively hold a portion of the winding coil 5 of the corresponding phase. Preferably, the tab 4 and the winding coil 5 are fixed to each other by welding and electrically conducted to each other by melting a paint coat of the winding coil at the time of welding. It should be understood that other forms of connectors are possible, as long as the power transfer functions described herein are achieved.

To facilitate injection molding of the lead frame into a single piece, each metal strip 2 includes one or more alignment holes 7 (see fig. 1), which alignment holes 7 can cooperate with alignment features (not shown) on the injection mold to maintain the relative positions of the individual metal strips 2 during injection molding. In addition, the individual metal strips 2 are also arranged at a distance from one another, so that during injection molding the injection material can flow into the gaps between the individual metal strips, so that the injection material is formed as a single piece when it solidifies. Part of the injection molding material flows into part of the positioning holes so as to realize better injection molding.

According to the utility model discloses a lead frame is applicable to preferably among the stator winding that adopts the triangular connection, can simply just draw forth six connector lugs reliably like this, avoids among the prior art because of directly wearing out or puncture various quality defects and the instability that lead to through the contact pin winding coat, has improved the stability and the security of product greatly. However, it should be understood that the lead frame according to the present invention is equally applicable to stator windings using star connection, in which case each connector may be directly connected to six terminals of a three-phase winding using star connection and electrically connected to an external power source of the motor via three pins or Pin pins.

According to the utility model discloses a motor reaches one of following beneficial effect at least: utilize the lead frame reliably and stably with three-phase electric power guide to stator winding in, whole lead frame becomes integrative through injection moulding, and it can be kept on stator module steadily, keeps stable in structure, promotes the quality reliability of product, and manufacturing process convenient and fast is not high to the required precision of technology, further promotes the product yield, has reduced manufacturing cost, has improved the market competition of product.

It should be appreciated that, in practical applications, the electric motor according to the present invention can be integrated in an electronic pump product in the automotive field, such as an electronic water pump or an electronic oil pump, which enables the operational stability of the electronic pump to be ensured. The electronic pump can be integrated into an electronic valve (assembly) as an electrically controlled component to perform the desired control function.

It should be noted that the above-described embodiments should be regarded as merely exemplary, and the present invention is not limited to these embodiments. Upon consideration of the present specification, those skilled in the art can make various changes and modifications without departing from the scope or spirit of the present invention. The true scope of the invention is defined by the following claims and their equivalents.

Claims (10)

1. An electric machine, characterized in that it comprises a stator assembly and a rotor assembly, said stator assembly comprising a stator core and stator windings, said electric machine further comprising a lead frame (1), said lead frame (1) comprising three metal strips (2) electrically insulated from each other, each metal strip (2) corresponding to a phase, each metal strip (2) comprising a pin (3) and a joint (4), each said pin (3) being adapted to transmit three-phase electricity from an external power source to a corresponding said metal strip (2), said joint (4) transmitting said three-phase electricity into stator windings of said electric machine.

2. An electric machine according to claim 1, characterized in that each metal strip (2) comprises two joints (4), the two joints (4) of each metal strip being angularly arranged 180 ° apart from each other.

3. The machine according to claim 2, characterized in that the joints (4) on three metal strips (2) are equally angularly spaced by 60 ° in a circumferential direction of 360 °.

4. An electric machine according to claim 2, characterized in that the joints (4) are in the form of jaws, each for holding a part of the winding coil (5) of a respective phase.

5. The machine according to claim 4, characterized in that the jaws and the winding coil (5) are held fixed to each other by welding and are electrically conducted to each other by melting a paint coat of the winding coil at the time of welding.

6. The machine according to any of claims 1 to 5, characterized in that all parts of each metal strip (2) except the pins (3) are covered with an electrically insulating coating.

7. An electric machine according to any of claims 1-5, characterized in that the lead frame (1) is injection molded in one piece.

8. An electric machine according to claim 7, characterized in that each metal strip (2) comprises one or more positioning holes (7), which positioning holes (7) are intended to cooperate with positioning elements on an injection mould in order to keep the relative position between the respective metal strips (2) constant during injection.

9. An electronic pump, which is an electronic oil pump or an electronic water pump, characterized in that the electronic pump comprises the motor according to any one of claims 1 to 8.

10. An electronic valve, characterized in that it comprises an electronic pump according to claim 9.

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