CN211508756U

CN211508756U - Motor oil pump

Info

Publication number: CN211508756U
Application number: CN201922383348.4U
Authority: CN
Inventors: 杨鲁川
Original assignee: Changzhou Grand Pump Co ltd
Current assignee: Changzhou Grand Pump Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-15
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to an electric motor oil pump, include: a mechanical portion and a control portion detachably connected to the mechanical portion; the mechanical part comprises a stator and a rotor matched with the stator; the control part comprises an end cover with an inner cavity, a circuit board positioned in the inner cavity of the end cover and an electric connection port which is used for being connected with an external power supply and is arranged on the outer wall of the end cover; the circuit board is detachably and electrically connected with the stator. According to the utility model discloses an electric oil pump, it moulds plastics together to cause the bad electric connection port of manufacturing and end cover part with the structure complicacy easily, moulds plastics together motor stator part and motor casing part, when electric oil pump breaks down, can unpack it apart, detects and changes the maintenance to mechanical part and control part respectively.

Description

Motor oil pump

Technical Field

The utility model relates to an electric motor oil pump.

Background

In the prior art, the motor stator of the injection-molded motor oil pump is integrally injection-molded together with the motor shell, and besides the connecting wires of the motor stator, the shell part is also provided with an electric connecting port, the electric connecting parts have complex structures and are easy to produce poor manufacturing in the injection molding process, once defective products are produced, the injection molding piece is integrally scrapped, and a motor stator core, a lead wire package and embedded pieces in the injection molding piece are scrapped, so that huge waste is caused.

In addition, the motor oil pump device is provided with a control device of a circuit board, and the circuit board needs to be connected with a lead of a motor stator. In the prior art, a lead is led out and is fixedly connected with a circuit board in a welding or compression joint mode, the circuit board is fixed on an injection molding stator through a screw connection or hot riveting process, and then a rear cover is installed. The above-mentioned welding or crimping connection method adopted by the circuit board and the motor stator is difficult to detach after connection, and when a motor of the motor oil pump or the circuit board thereof has a fault, it cannot be determined whether the fault part is a motor part or a driving device part or a connection part, so that once the motor oil pump is detected to have poor electrical performance, the motor + circuit board part of the whole motor oil pump usually has to be scrapped.

Disclosure of Invention

An object of the utility model is to solve above-mentioned problem, provide an easy dismantlement carry out the motor oil pump that the subassembly was changed or was maintained.

To achieve the above object, the present invention provides an electric motor oil pump, comprising: a mechanical portion and a control portion detachably connected to the mechanical portion;

the mechanical part comprises a stator and a rotor matched with the stator;

the control part comprises an end cover with an inner cavity, a circuit board positioned in the inner cavity of the end cover and an electric connection port which is used for being connected with an external power supply and is arranged on the outer wall of the end cover;

the circuit board is detachably and electrically connected with the stator.

According to one aspect of the present invention, the circuit board is electrically connected to the stator detachably through a conductive elastic connector; alternatively, the first and second electrodes may be,

the stator is detachably inserted on the circuit board through a contact pin to realize electric connection.

According to one aspect of the present invention, the lead is detachably and electrically connected to the circuit board through the conductive elastic connecting member; alternatively, the first and second electrodes may be,

the lead wire is detachably inserted on the circuit board to realize electric connection.

According to an aspect of the present invention, the conductive elastic connecting member is a conductive spring or a conductive rubber.

According to one aspect of the present invention, the conductive spring is a conical spring, one end of the conical spring abuts against the circuit board, and the other end abuts against the inner wall of the housing of the stator and/or the end cap corresponding to the lead wire;

and the diameter of one end of the conical spring, which is abutted against the circuit board, is smaller than that of one end of the conical spring, which is far away from the circuit board.

According to an aspect of the present invention, the conical spring abuts against one end of the circuit board is a contact plane bent by a spring steel wire.

According to an aspect of the invention, the contact plane is a spiral plane.

According to one aspect of the present invention, one end of the conical spring, which is far away from the circuit board, is provided with a spring steel wire hook-shaped pin;

the lead is connected with the hook-shaped pin of the spring steel wire;

the stator is connected with the spring steel wire hook-shaped pin through a conducting wire.

According to an aspect of the present invention, the portion of the lead wire is buried in the main body of the end cap.

According to an aspect of the present invention, the mechanical part further includes a rotation shaft connected to the rotor, a housing for supporting the stator, a mount for supporting the housing and the rotation shaft, and a base for supporting the mount;

the mounting seat is provided with an inlet and an outlet for the engine oil to enter and discharge the motor oil pump or the base is provided with an inlet and an outlet for the engine oil to enter and discharge the motor oil pump or

The mounting seat and the base are respectively provided with an inlet and an outlet for engine oil to enter and discharge the motor oil pump.

According to the utility model discloses a scheme, the utility model discloses a cause the structure complicacy to make bad electricity connect port and end cover part to mould plastics together, mould plastics motor stator part and motor casing part together, can optimize manufacturing process like this to needn't lead to the motor stator part that the cost is expensive also to be scrapped because of the manufacturing of electricity connection port is bad, on the contrary, if motor stator part takes place to make badly, can not influence the yields of electricity connection port yet, consequently, can reduce the waste, reduce manufacturing cost, improve production efficiency.

The contact connection is adopted between the circuit board and the motor stator lead to replace welding or crimping, so that on one hand, the welding or crimping processing procedure on the circuit board is reduced or avoided, the total assembly time can be shortened, in addition, the potential risk of pollution of the welding procedure to the circuit board can be reduced, and the risks of damage to the circuit board, pollution of additives in welding flux to the circuit board, open circuit caused by splashing of the welding flux and the like which are possibly brought by high temperature can be avoided; the time can be saved, so that the total time of the assembly process can be shortened, and the production efficiency is improved; meanwhile, the process links of welding or crimping are reduced, the equipment investment is saved, and the production cost is reduced. On the other hand, the detachable connection can be realized, when the motor oil pump fails, the motor oil pump can be detached, the mechanical part and the control part are respectively detected, the failed part is confirmed, and the failed part is abandoned or maintained and is reserved as the non-failed part, so that even if the motor oil pump is detected to be bad, the whole device does not need to be scrapped as before, the waste can be reduced, the manufacturing cost can be reduced, and the production efficiency can be improved.

Drawings

Fig. 1 is a sectional view schematically showing the structure of a conventional motor oil pump;

fig. 2 schematically shows a structural cross-sectional view of an electric motor oil pump according to an embodiment of the present invention;

fig. 3 schematically shows a perspective view of an electrically conductive elastic connector according to an embodiment of the present invention;

FIG. 4 schematically shows a block diagram of a circuit board according to an embodiment of the present invention;

FIG. 5 schematically illustrates a top view of a conical spring mounted on a stator in accordance with an embodiment of the present invention;

fig. 6 schematically shows a perspective view of a conical spring mounted on a stator according to an embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In describing embodiments of the present invention, the terms "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and other terms are used in an orientation or positional relationship shown in the associated drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the present invention is not limited to the following embodiments.

Fig. 1 schematically shows a structural cross-sectional view of a conventional motor oil pump. As shown in fig. 1, a casing C and a motor stator D of a conventional motor oil pump are integrally injection molded, and an electrical connection port E is further disposed on an outer wall of the casing C, and is also integrally injection molded with the casing C. Further, as shown in fig. 1, a wiring board F in the conventional motor oil pump is also mounted in the housing C, and specifically, the wiring board F is electrically connected to the stator D and the electrical connection port E by being soldered to the lead wires G and the lead wires H in the electrical connection port E. As shown in fig. 1, the conventional motor oil pump further includes an end cap I for closing the housing C, and the end cap I is fastened to an end of the housing C to seal the housing C.

As can be seen from the above, the conventional motor oil pump generally adopts the integral injection molding of the housing, the motor stator and the electrical connection port, and the circuit board is mounted in the housing and soldered to the corresponding lead.

Due to the arrangement, the manufacturing process of the integral structure of the traditional motor oil pump is complex, the processes of forming, welding, installing and the like of the integral structure are difficult, defective products are easy to generate in the injection molding process, and once the defective products are generated, the motor oil pump is scrapped integrally, and replacement or maintenance of individual parts cannot be carried out. In addition, as shown in fig. 1, in the conventional motor oil pump, a lead is led out and soldered or crimped with a circuit board, and then the circuit board is fixed on an injection-molded stator by a screw connection or a hot riveting process, and then a rear cover is mounted. The circuit board and the motor stator are mostly connected by welding or crimping, and are difficult to detach after welding or crimping, when a motor of the motor oil pump or the circuit board fails, whether the motor fails or the circuit board fails or whether the connection part fails cannot be judged, so that once the motor oil pump is detected to have poor electrical performance, the motor and the circuit board of the whole motor oil pump usually have to be scrapped.

To address the above-described deficiencies of conventional motor oil pumps, such as that shown in fig. 1, the present invention reclassifies the motor housing portion and the motor end cap portion of the motor oil pump, separates the electrical connection port portion from the motor housing, and integrally injection molds with the motor end cap portion. Particularly, through cutting apart the overall structure of motor oil pump, realize that the separation can be dismantled easily to motor oil pump's mechanical part and control part, rather than simple will as above motor housing and motor end cover distinguish the partition, so make the utility model discloses a change or the maintenance of subassembly can be carried out when motor oil pump breaks down, needn't wholly scrap.

And simultaneously, the utility model discloses change the connected mode between circuit board and the stator wire into detachable contact and be connected, and then use the contact element of special shape to improve contact stability and area of contact.

The following describes in detail the present invention with reference to the drawings, which is directed to the improvement of the conventional oil pump.

Fig. 2 schematically shows a structural cross-sectional view of a motor oil pump according to an embodiment of the present invention. As shown in fig. 2, in the present embodiment, the electric motor oil pump includes: the machine part 1 and the control part 2 for controlling the machine by electrifying, wherein the machine part 1 and the control part 2 are detachably connected together. The machine part 1 comprises a stator 101 and a rotor 102 cooperating with the stator 101. The control section 2 includes an end cap 201, a wiring board 202, and an electrical connection port 203. As shown in fig. 2, the end cap 201 has an inner cavity for accommodating the circuit board 202, that is, when assembling the motor oil pump of the present invention, the circuit board 202 is installed in the inner cavity of the end cap 201, and the circuit board and the stator are not installed together in the housing of the motor part as in the above-mentioned conventional motor oil pump. Meanwhile, as shown in fig. 2, the electrical connection port 203 is disposed on the outer wall of the end cap 201, but of course, the electrical connection port 203 may be disposed in an integrally formed manner with the end cap 201 or in a detachable manner.

As shown in fig. 2, in the present embodiment, the end cap 201 is snap-fitted to the mechanism portion 1, and detachably covers the mechanism portion 1. As shown in fig. 2, a part (left end in the drawing) of the wiring board 202 is connected to the lead 2031 in the electrical connection port 203, and the other part (right end in the drawing) is connected to the stator 101.

In the present embodiment, the wiring board 202 is electrically connected to the lead 2031 and the stator 101 in a detachable manner. The utility model discloses in, can adopt electrically conductive elastic connecting piece 4 to realize that circuit board 202 is connected with the detachable electricity of stator 101, perhaps adopt stator 101 to realize the electricity through the direct detachably grafting of contact pin on circuit board 202 and connect. Meanwhile, the circuit board 202 and the leads 2031 are detachably and electrically connected by the conductive elastic connecting piece 4, or the leads 2031 are detachably plugged on the circuit board 202 to be electrically connected.

As shown in fig. 2, in the present embodiment, the conductive elastic connecting member 4 is used to electrically connect the stator 101 detachably, and the electrical connection is made through the conductive wire S in fig. 2. And the leads 2031 are detachably plugged onto the circuit board 202 to realize electrical connection. Of course, as mentioned above, the electrical connection between the stator 101 and the circuit board 202 may also be a detachable plug-in connection, and the electrical connection between the lead 2031 and the circuit board 202 may also be a conductive elastic connector 4, and certainly, the electrical connection between the lead 2031 and the circuit board 202 is not necessarily a detachable electrical connection, and may be a connection using other manners, such as welding, plug-in connection, and fastening connection, in the present invention, the detachable electrical connection between the stator 101 and the circuit board 202 is mainly used. Furthermore, in the present invention, the conductive elastic connecting member 4 may be a spring or a conductive rubber.

Fig. 3 schematically shows a perspective view of an electrically conductive elastic connector according to an embodiment of the present invention. As shown in fig. 3, in the present embodiment, the conductive elastic connector 4 is a conical spring, and as shown in fig. 2, the diameter of one end of the conical spring abutting against the circuit board 202 is smaller than that of the end far away from the circuit board 202, i.e. the small end abuts against the circuit board, and the large end is connected to the stator 101 and/or the lead 2031. In the present embodiment, as shown in fig. 3, one end of the tapered spring contact circuit board 202 is a spiral contact plane formed by bending a spring wire. So set up for electrically conductive elastic connection spare 4's structure is more stable, and the contact surface adopts shapes such as plane spiral, can increase area of contact, and one guarantees to stabilize ground electric connection, and two can reduce contact resistance, reduce the loss of electric energy. In addition, as shown in fig. 3, the end of the conical spring away from the circuit board 202 has a spring wire hook pin to which the lead 2031 can be connected, and the stator 101 is connected by a wire.

Fig. 4 schematically shows a structure diagram of a wiring board according to an embodiment of the present invention. Fig. 5 and 6 are schematic views showing a structure of mounting a conical spring on a stator according to an embodiment of the present invention. Referring to fig. 4 to 6, the wiring board 202 is provided with contacts a, b, and c. The three contacts correspond to three conical springs mounted on the stator 101, the small end of each conical spring abuts against the contact, and the pins of each conical spring are connected with the conducting wires S, so that the circuit board 202 is electrically connected with the stator 101. In this embodiment, the position of installing conical spring on the stator 101 shell body is provided with corresponding mounting groove, and conical spring passes through the mounting groove stable installation on stator 101, and rethread pin and wire S 'S are connected for conical spring' S installation is reliable and stable, has firm gesture, thereby forms stable contact. Of course, in addition to the above arrangement, in another embodiment of the present invention, when the stator 101 is plugged on the circuit board 202 through the contact pin, the contact may be arranged as a jack, and then one end of the contact pin is connected to the wire S and the other end is plugged on the circuit board 202, so as to electrically connect the stator 101 and the circuit board 202.

The connection between the leads 2031 and the circuit board 202 in this embodiment is similar to the connection between the stator 101 and the circuit board 202 by inserting pins, that is, inserting holes are provided at corresponding positions of the circuit board 202, and then the leads are inserted into the inserting holes to electrically connect the electrical connection port 203 and the circuit board 202. Of course, in another embodiment of the present invention, when the conductive elastic connecting element 4 is used to electrically connect the lead 2031 to the circuit board 202, the arrangement is also similar to the above-mentioned arrangement in which the stator 101 and the circuit board 202 are electrically connected through the conductive elastic connecting element 4, that is, the mounting groove is arranged at a corresponding position of the end cover 201 to mount the conductive elastic connecting element 4 such as a conical spring, and then the conical spring is connected to the lead 2031 through a pin, and the other end (i.e., the small end) abuts against a corresponding contact position of the circuit board 202.

Further, in this embodiment, the lead 2031 is embedded in the body of the end cap except for the connection end, so that the wiring is sealed and insulated, and the service life of the product is longer.

In addition to the above arrangement, as shown in fig. 2, the mechanical part 1 of the motor oil pump according to the present invention further includes a rotating shaft 103 connected to the rotor 101, a housing 104 for supporting the stator 101, a mount 105 for supporting the housing 104 and the rotating shaft 103, and a base 106 for supporting the mount 105. The base 106 is provided with an inlet a and an outlet B for the motor oil pump for the entry and exit of the oil. Of course, the inlet a and the outlet B for the oil to be introduced and discharged may be provided on the mount base 105, or may be provided on the mount base 105 and the base 106, respectively.

According to the above arrangement of the utility model, the utility model discloses a cause the structure complicacy to make bad electricity connect port and end cover part to mould plastics together, mould plastics motor stator part and motor casing part together, can optimize manufacturing process like this to needn't lead to the expensive motor stator part of cost also to be scrapped because of the manufacturing failure of electricity connection port, on the contrary, if motor stator part takes place to make badly, can not influence the yields of electricity connection port yet, consequently, can reduce extravagantly, reduce manufacturing cost, improve production efficiency.

The circuit board and the motor stator lead are connected in a contact mode instead of welding or compression joint, on one hand, welding or compression joint processing procedures on the circuit board are reduced or avoided, so that the total assembly time can be shortened, the potential risk of pollution of the welding procedures on the circuit board is reduced, and the risks of damage to the circuit board, pollution to the circuit board caused by additives in welding flux, circuit breaking caused by splashing of the welding flux and the like, which are possibly caused by high temperature, are avoided; the time can be saved, so that the total time of the assembly process can be shortened, and the production efficiency is improved; meanwhile, the process links of welding or crimping are reduced, the equipment investment is saved, and the production cost is reduced. On the other hand, the detachable connection can be realized, when the motor oil pump fails, the motor oil pump can be detached, the mechanical part and the control part are respectively detected, the failed part is confirmed, and the failed part is abandoned or maintained and is reserved as the non-failed part, so that even if the motor oil pump is detected to be bad, the whole device does not need to be scrapped as before, the waste can be reduced, the manufacturing cost can be reduced, and the production efficiency can be improved.

The foregoing is merely exemplary of embodiments of the present invention and reference should be made to the apparatus and structures herein not described in detail as it is known in the art to practice the same in general equipment and general methods.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric motor oil pump, comprising: a mechanical part (1) and a control part (2) detachably connected with the mechanical part (1);

the mechanical part (1) comprises a stator (101) and a rotor (102) cooperating with the stator (101);

the control part (2) comprises an end cover (201) with an inner cavity, a circuit board (202) positioned in the inner cavity of the end cover (201), and an electric connection port (203) which is used for being connected with an external power supply and is arranged on the outer wall of the end cover (201);

the circuit board (202) is detachably and electrically connected with the stator (101).

2. The electric motor oil pump according to claim 1, characterized in that the circuit board (202) is detachably and electrically connected to the stator (101) by an electrically conductive elastic connector (4); alternatively, the first and second electrodes may be,

the stator (101) is detachably plugged on the circuit board (202) through a plug pin to realize electric connection.

3. The electric motor oil pump according to claim 2, characterized in that a lead wire (2031) is included in the electric connection port (203), the lead wire (2031) being detachably and electrically connected to the circuit board (202) through the electrically conductive elastic connecting member (4); alternatively, the first and second electrodes may be,

the leads (2031) can be detachably plugged on the circuit board (202) to realize electric connection.

4. The motor oil pump according to claim 3, characterized in that the conductive elastic connection member (4) is a conductive spring or a conductive rubber.

5. The motor oil pump according to claim 4, characterized in that the conductive spring is a conical spring, one end of the conical spring abuts against the circuit board (202), and the other end abuts against the inner wall of the housing of the stator (101) and/or the end cover (201) corresponding to the lead (2031);

and the diameter of one end of the conical spring abutting against the circuit board (202) is smaller than that of one end far away from the circuit board (202).

6. The motor oil pump according to claim 5, wherein an end of the conical spring abutting against the wiring board (202) is a contact plane formed by bending a spring steel wire.

7. The electric motor oil pump of claim 6, wherein the contact plane is a spiral plane.

8. The motor oil pump of claim 7, wherein an end of the conical spring remote from the circuit board (202) has a spring wire hook pin;

the lead (2031) is connected with the spring steel wire hook-shaped pin;

the stator (101) is connected with the spring steel wire hook-shaped pin through a lead.

9. The motor oil pump according to claim 8, characterized in that a portion of the lead (2031) is embedded in a body of the end cap (201).

10. The electric motor oil pump according to any one of claims 1 to 9, characterized in that the mechanical part (1) further comprises a rotating shaft (103) connected to the rotor (102), a housing (104) for supporting the stator (101), a mount (105) for supporting the housing (104) and the rotating shaft (103), and a base (106) for supporting the mount (105);

the mounting seat (105) is provided with an inlet (A) and an outlet (B) or

The base (106) is provided with an inlet (A) and an outlet (B) or

The mounting seat (105) and the base (106) are respectively provided with an inlet (A) and an outlet (B) for the engine oil to enter and discharge the motor oil pump.