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CN-121993718-A - Liquid collecting box, lubricating device, electric driving system and vehicle

CN121993718ACN 121993718 ACN121993718 ACN 121993718ACN-121993718-A

Abstract

The invention relates to the technical field of vehicles, in particular to a liquid collecting box, a lubricating device, an electric driving system and a vehicle. The liquid collecting box comprises a box body, a valve seat, an elastic piece and a valve core, wherein the box body is provided with a liquid collecting cavity, a liquid inlet part is arranged on the box body, a liquid inlet cavity is arranged in the liquid inlet part, and a liquid inlet communicated with the liquid inlet cavity is arranged on the liquid inlet part. The valve seat is arranged in the box body and divides the box body into a liquid collecting cavity and a liquid inlet cavity, the valve seat is provided with a through hole, and the liquid inlet cavity is communicated with the liquid collecting cavity through the through hole. The valve core is movably arranged in the liquid inlet cavity, and the elastic piece is arranged between the valve seat and the valve core to elastically support the valve core to seal the liquid inlet. Through integrating the check valve to the liquid collecting box, reduced the occupation space of check valve in the feed liquor intracavity to reduce the holistic occupation space of liquid collecting box, improved the stability of the assembly of check valve and liquid collecting box. Meanwhile, the check valve or the liquid collecting box is prevented from being damaged in the valve cylinder press-fitting process, and the safety of the check valve and the liquid collecting box is improved.

Inventors

  • WU XIAODONG
  • LI ZHI
  • HUANG FEI

Assignees

  • 上海理想汽车科技有限公司

Dates

Publication Date
20260508
Application Date
20241101

Claims (12)

  1. 1. The liquid collecting box, its characterized in that includes: the box body (1), box body (1) has liquid collecting cavity (11), be provided with feed liquor portion (2) on box body (1), have feed liquor chamber (21) in feed liquor portion (2), feed liquor portion (2) are provided with feed liquor mouth (22) of feed liquor chamber (21) intercommunication; The valve seat (3) is arranged in the box body (1) and divides the interior of the box body (1) into the liquid collecting cavity (11) and the liquid inlet cavity (21), the valve seat (3) is provided with a through hole (311), and the liquid inlet cavity (21) is communicated with the liquid collecting cavity (11) through the through hole (311); The valve comprises an elastic piece (4) and a valve core (5), wherein the valve core (5) is movably arranged in the liquid inlet cavity (21), and the elastic piece (4) is arranged between the valve seat (3) and the valve core (5) so as to elastically support the valve core (5) to seal the liquid inlet (22).
  2. 2. The liquid collecting box according to claim 1, wherein the inner wall of the liquid inlet part (2) is provided with a guiding inclined surface (25) which is arranged obliquely inwards, and the guiding inclined surface (25) is connected with the liquid inlet (22); The head of the valve core (5) is provided with an inclined surface for abutting against the guide inclined surface (25), the inclined direction of the inclined surface is the same as that of the guide inclined surface (25), and the inclined angle of the inclined surface is not equal to that of the guide inclined surface (25).
  3. 3. The liquid collecting box according to claim 1, characterized in that the valve core (5) is provided with an abutment portion in the axial direction, which abuts against the inner wall of the valve seat (3).
  4. 4. A liquid collecting box according to claim 3, wherein the abutment has a rounded outer surface which is in abutment with the inner wall of the valve seat (3).
  5. 5. The liquid collecting box according to claim 1, wherein a limit groove (23) communicated with the liquid inlet cavity (21) is formed in one end, close to the box body (1), of the liquid inlet part (2), and the valve seat (3) is connected with the inner wall of the limit groove (23) in a welding mode.
  6. 6. The liquid collecting box according to any one of claims 1-5, wherein the valve seat (3) comprises a main body seat (31) and a convex column (32) arranged on the main body seat (31), the main body seat (31) is arranged in the box body (1) and divides the interior of the box body (1) into the liquid collecting cavity (11) and the liquid inlet cavity (21), the through hole (311) is formed in the main body seat (31), one end of the elastic element (4) is sleeved on the convex column (32), one end, close to the valve seat (3), of the valve element (5) is provided with a containing groove (51), and the other end of the elastic element (4) stretches into the containing groove (51) and abuts against the inner bottom wall of the containing groove (51).
  7. 7. The liquid collecting box according to claim 6, wherein the valve seat (3) is further provided with a through hole (30), the through hole (30) penetrates through the main body seat (31) and the convex column (32), and the liquid collecting cavity (11) is communicated with the accommodating groove (51) through the through hole (30).
  8. 8. The liquid collecting box according to any one of claims 1-5, wherein a stepped groove (53) is arranged at one end of the valve core (5) close to the valve seat (3), and the projection of the stepped groove (53) on the valve seat (3) is at least partially overlapped with the through hole (311).
  9. 9. The liquid collecting box according to claim 8, wherein the valve core (5) is circumferentially provided with the stepped groove (53) near one end of the valve seat (3).
  10. 10. The lubricating device is characterized by comprising a pump body and the liquid collecting box as claimed in any one of claims 1-9, wherein a liquid outlet of the pump body is communicated with a liquid inlet (22) of a liquid inlet part (2) of the liquid collecting box.
  11. 11. An electric drive system comprising the lubrication device of claim 10.
  12. 12. A vehicle comprising the electric drive system of claim 11.

Description

Liquid collecting box, lubricating device, electric driving system and vehicle Technical Field The invention relates to the technical field of vehicles, in particular to a liquid collecting box, a lubricating device, an electric driving system and a vehicle. Background The one-way valve is a valve body which can be automatically opened and closed by depending on a fluid medium, has the function of enabling the fluid medium to flow unidirectionally and preventing the medium from flowing backwards, and is commonly used in a lubricating device of an electric driving system of a vehicle. In lubricating arrangement, the fluid that the electron pump pumped gets into in the album liquid box, and two check valves are installed respectively in two inlet of album liquid box to prevent that fluid from to electron pump backward flow, avoid album liquid box to take place to reveal in two inlet departments, increase the consumption of electron pump. The valve cylinder of the existing one-way valve is installed in the liquid inlet cavity of the liquid inlet part of the liquid collecting box in an interference mode, the valve cylinder of the one-way valve needs to occupy part of the space of the liquid inlet cavity, and the size of the liquid inlet part needs to be increased in order to ensure the flow of the liquid inlet part of the liquid collecting box, so that the whole occupied space of the liquid collecting box is increased to some extent. Moreover, vibration can be generated when the electric drive system operates, so that the valve barrel of the one-way valve is easily separated from the liquid inlet part, the one-way conduction failure of the oil liquid at the liquid inlet of the liquid collecting box is caused, and the leakage of the oil liquid occurs. In addition, in the valve cylinder press-fitting process of the check valve, if the assembly mode is improper, the installation position of the check valve can deviate, and the check valve or the liquid collecting box can be damaged seriously. Disclosure of Invention The invention aims to provide a liquid collecting box, a lubricating device, an electric driving system and a vehicle, so that a one-way valve is integrated into the liquid collecting box, the structure of the one-way valve is simplified, the whole occupied space of the liquid collecting box is reduced, and meanwhile, the stability and the safety of the assembly of the one-way valve and the liquid collecting box are improved. To achieve the purpose, the invention adopts the following technical scheme: A liquid trap comprising: the box body is provided with a liquid collecting cavity, a liquid inlet part is arranged on the box body, a liquid inlet cavity is arranged in the liquid inlet part, and a liquid inlet communicated with the liquid inlet cavity is arranged on the liquid inlet part; the valve seat is arranged in the box body and divides the box body into the liquid collecting cavity and the liquid inlet cavity, the valve seat is provided with a through hole, and the liquid inlet cavity is communicated with the liquid collecting cavity through the through hole; the valve core is movably arranged in the liquid inlet cavity, and the elastic piece is arranged between the valve seat and the valve core so as to elastically support the valve core to seal the liquid inlet. As an alternative scheme, the inner wall of the liquid inlet part is provided with a guiding inclined plane which is arranged obliquely inwards, and the guiding inclined plane is connected with the liquid inlet; The head of the valve core is provided with an inclined surface for abutting against the guide inclined surface, the inclined direction of the inclined surface is the same as that of the guide inclined surface, and the inclined angle of the inclined surface is unequal to that of the guide inclined surface. As an alternative, an abutting part is axially arranged on the valve core, and the abutting part abuts against the inner wall of the valve seat. Alternatively, the abutting portion has a smooth transition outer surface, and the outer surface is attached to an inner wall of the valve seat. As an alternative scheme, the one end that the feed liquor portion is close to the box body be provided with the spacing groove of feed liquor chamber intercommunication, the disk seat with the inner wall welding in spacing groove links to each other. As an alternative scheme, the valve seat includes the main part seat with set up in the projection of main part seat, the main part seat set up in the box body and with the box body is inside to be separated into liquid collecting cavity with the feed liquor chamber, the main part seat has been seted up the through-hole, the one end suit of elastic component in on the projection, the case is close to the one end of valve seat is provided with the holding tank, the other end of elastic component stretches into in the holding tank and support tightly in the inner bottom wall of holding tank. Alter