CN212318194U

CN212318194U - Brushless fuel pump

Info

Publication number: CN212318194U
Application number: CN202020977902.1U
Authority: CN
Inventors: 王刚
Original assignee: Chongqing Wanli Lianxing Industrial Group Co ltd
Current assignee: Chongqing Wanli Lianxing Industrial Group Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-01-08
Anticipated expiration: 2030-06-02

Abstract

The utility model provides a brushless fuel pump, including casing, stator plastic-coated body and rotor subassembly, the stator plastic-coated body is hollow structure, the rotor subassembly is located inside the stator plastic-coated body, the stator plastic-coated body is located inside the casing, the rotor subassembly includes spindle and magnet, one end of the stator plastic-coated body is connected with the power inserted sheet, the other end of the stator plastic-coated body is connected with the oil inlet end, the stator plastic-coated body includes stator silicon steel sheet, enameled wire winding and the plastic casing that sets gradually from inside to outside, the wiring end of enameled wire winding with the power inserted sheet is connected, the wiring end of enameled wire winding with the power inserted sheet adopts spot welding to connect, the utility model discloses with silicon steel sheet, enameled wire winding and plastic casing together with the injection molding, again with the power inserted sheet with the wiring end fixed connection of enameled wire winding together, the assembly process of the brushless fuel pump is simplified, and the power supply insertion piece and the wiring of the enameled wire are firmer.

Description

Brushless fuel pump

Technical Field

The utility model relates to a fuel pump technical field, concretely relates to brushless fuel pump.

Background

In the manufacturing process of the existing fuel pump, a pump body cover and a stator chip are usually separated into two parts, so that the assembly is complex, even the contact between a lead and an insert is poor, and the product yield is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the embodiment of the utility model provides a brushless fuel pump, including casing, the stator plastic-coated body and rotor subassembly, the stator plastic-coated body is hollow structure, the rotor subassembly is located the internal portion of stator plastic-coated body, stator plastic-coated body are located inside the casing, the rotor subassembly includes bent axle and magnet, the one end of the stator plastic-coated body is connected with the power inserted sheet, the other end of the stator plastic-coated body is connected with the oil feed end.

Further, the stator plastic-covered body comprises a stator silicon steel sheet, an enameled wire winding and a plastic shell which are sequentially arranged from inside to outside, a wiring end of the enameled wire winding is connected with the power supply insertion sheet, the power supply insertion sheet and the plastic shell are covered and molded together, and an oil outlet is integrally formed in one end, close to the power supply insertion sheet, of the plastic shell.

Furthermore, the wiring end of the enameled wire winding is connected with the power supply insertion piece through spot welding.

Furthermore, the wiring end of the enameled wire winding is connected with the power supply insertion piece in a clamping mode.

Furthermore, one end of the power supply insertion piece, which is close to the enameled wire winding, is provided with a through hole through which a wiring end of the enameled wire winding can pass.

Furthermore, an oil outlet is formed in one end, close to the power supply insertion piece, of the plastic shell.

Further, the magnets are die cast on the outer surface of the crankshaft.

Furthermore, a bearing used for supporting the rotor assembly to rotate is arranged in the stator plastic-coated body.

The utility model has the advantages that:

1) the utility model has the advantages that the silicon steel sheet, the enameled wire winding and the plastic shell are injected together, and then the power supply insertion piece is fixedly connected with the wiring end of the enameled wire winding, so that the assembly process of the brushless fuel pump is simplified, and the wiring of the power supply insertion piece and the enameled wire is firmer;

2) the utility model discloses a set up in package internal portion of moulding and be used for supporting rotor subassembly pivoted bearing, the workman only needs insert the inner chamber of the package body with the rotor subassembly that corresponds the model, makes during the shaft inserts the bearing, just can guarantee that rotor subassembly and package body are coaxial, improves the stability ability of rotor subassembly, guarantees its normal work.

Drawings

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings

Fig. 1 is a schematic structural diagram of a brushless fuel pump according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the plastic-coated body in the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a rotor assembly in an embodiment of the present invention.

Description of the drawings: 10-a machine shell, 20-a plastic-coated body, 21-a stator silicon steel sheet, 22-an enameled wire winding, 23-a plastic shell, 231-an oil outlet, 30-a rotor assembly, 31-a machine shaft, 32-a magnet, 40-a power supply insertion piece, 50-an oil inlet end and 60-a bearing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a brushless fuel pump according to an embodiment of the present invention. Including casing 10, stator package plastic body 20 and rotor subassembly 30, stator package plastic body 20 is hollow structure, rotor subassembly 30 is located inside stator package plastic body 20, stator package plastic body 20 is located inside casing 10, rotor subassembly 30 includes bent axle 31 and magnet 32, the one end of stator package plastic body 20 is connected with power inserted sheet 40, the other end of stator package plastic body 20 is connected with oil feed end 50. Specifically, the stator plastic-coated body 20 comprises a stator silicon steel sheet 21, an enameled wire winding 22 and a plastic shell 23 which are sequentially arranged from inside to outside, and a wiring end of the enameled wire winding is connected with the power supply insertion sheet 40. The power supply inserting piece 40 and the plastic shell 23 are wrapped and molded together, and an oil outlet 231 is integrally formed at one end, close to the power supply inserting piece 40, of the plastic shell 23. In practical use, firstly, the stator silicon steel sheet 21 and the enameled wire winding 22 are wound, and then the plastic shell 23 is wrapped on the outer layer to form the plastic-wrapped body 20; then, the plastic-covered body 20 is inserted into the hollow casing 10, the terminal on the enameled wire winding 22 is connected and fixed with the power supply insertion sheet 40, finally, the rotor assembly 30 is inserted into the inner cavity of the plastic-covered body 20, and after the detection is qualified, the whole plastic-covered body is sealed.

In some preferred embodiments, the terminal of the enameled wire winding 22 is connected with the power plug-in piece 40 by spot welding, and the terminal of the enameled wire winding 22 is directly connected with the power plug-in piece 40 by spot welding, so that the connection between the terminal and the power plug-in piece 40 is firmer and more labor-saving.

In other preferred embodiments, the terminals of the enameled wire winding 22 are connected with the power plug-in strip 40 in a clamping manner. Specifically, the power supply inserting piece 40 is provided with a through hole for the wiring end of the enameled wire winding to pass through, compared with the former spot welding connection mode, the mode consumes labor force, but the connection mode of the clamping connection is easy to detach, so that secondary recycling is facilitated.

In some preferred embodiments, the magnet 32 is die-cast on the outer surface of the crankshaft 31, and current is applied from the outside through the power supply insertion piece 40, so that the stator plastic body 20 generates a changing magnetic field in space, and the rotor assembly 30 rotates; in order to spray the fuel from the fuel outlet 231, the crankshaft 31 must rotate at a high speed, so that the fuel quickly fills the gap between the plastic-covered body 20 and the rotor assembly 30, the amount of the fuel between the gaps is increased, the hydraulic pressure in the gap is increased, and the fuel can be sprayed from the fuel outlet 231; therefore, the present application directly die-casts the magnets on the outer surface of the crankshaft 31 to prevent the crankshaft 31 from being separated from the magnets 32 due to the high-speed rotation of the crankshaft 31, thereby affecting the oil injection effect. Of course, the method of fixing the shaft 31 and the magnet 32 is not limited to die casting, and for example, a detent may be added at the connecting edge of the magnet 32 and the shaft 31, and the magnet 32 and the shaft 31 may also be fixed.

In other preferred embodiments, the stator/plastic composite body 20 is provided with a bearing 60 therein for supporting the rotor assembly 30 to rotate. Based on the condition that the crankshaft 31 rotates at a high speed, the bearing 60 is of a circular ring structure, the outer wall of the bearing 60 is in contact with the inner wall of the plastic-coated body 20, and the center of the bearing 60 is provided with a circular hole with the size matched with the cross section of the crankshaft 31, so that the design can ensure that the rotor assembly 30 rotates along a fixed axis all the time after being inserted, and the stability of a product is improved.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. A brushless fuel pump, characterized in that: including casing (10), stator package plastic body (20) and rotor subassembly (30), stator package plastic body (20) are hollow structure, rotor subassembly (30) are located inside stator package plastic body (20), stator package plastic body (20) are located inside casing (10), rotor subassembly (30) are including bent axle (31) and magnet (32), the one end of stator package plastic body (20) is connected with power inserted sheet (40), the other end of stator package plastic body (20) is connected with into oil end (50).

2. A brushless fuel pump as set forth in claim 1, wherein: stator plastic-coated body (20) include stator silicon steel sheet (21), enameled wire winding (22) and plastic casing (23) that set gradually from inside to outside, enameled wire winding's wiring end with power inserted sheet (40) are connected, power inserted sheet (40) are moulded with plastic casing (23) package and are in the same place, plastic casing (23) are close to power inserted sheet (40) one end an organic whole and are equipped with oil-out (231).

3. A brushless fuel pump as set forth in claim 2, wherein: the wiring end of the enameled wire winding (22) is connected with the power supply inserting piece (40) through spot welding.

4. A brushless fuel pump as set forth in claim 2, wherein: the wiring end of the enameled wire winding (22) is connected with the power supply insertion sheet (40) in a clamping mode.

5. A brushless fuel pump as set forth in claim 4, wherein: and one end of the power supply insertion piece (40) close to the enameled wire winding is provided with a through hole through which a wiring end of the enameled wire winding can pass.

6. A brushless fuel pump as set forth in claim 2, wherein: an oil outlet (231) is formed in one end, close to the power supply inserting piece (40), of the plastic shell (23).

7. A brushless fuel pump as set forth in claim 1, wherein: the magnet (32) is die-cast on the outer surface of the crankshaft (31).

8. A brushless fuel pump as set forth in claim 1, wherein: and a bearing (60) for supporting the rotor component (30) to rotate is arranged in the stator plastic-coated body (20).