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CN-121977062-A - Ventilation plug, gearbox and automobile

CN121977062ACN 121977062 ACN121977062 ACN 121977062ACN-121977062-A

Abstract

The invention relates to a ventilation plug, a gearbox and an automobile, which comprises a ventilation plug body, wherein one end of the ventilation plug body is an open end, the other end of the ventilation plug body is a closed end, a plurality of air holes are formed in the closed end, a flow passage is arranged in the ventilation plug body, the flow passage comprises an air inlet passage and a filter element passage along the direction from the open end to the closed end, a plurality of filter elements which are in sliding connection with the filter element passage are sequentially arranged in the filter element passage, the diameter of the filter element close to the open end is larger than that of the other filter element in two adjacent filter elements, the end of the filter element close to the open end adopts a frustum structure, the filter element passage comprises channel parts which are in one-to-one correspondence with the filter elements, a conical transition part corresponding to the frustum structure is arranged between the adjacent channel parts, and a flexible filter element made of a hydrophobic microporous material is arranged between the filter element closest to the closed end.

Inventors

  • XIONG YI
  • ZHANG HONGAN
  • HU CHANGCAI
  • QIU YING

Assignees

  • 奇瑞汽车股份有限公司

Dates

Publication Date
20260505
Application Date
20260325

Claims (10)

  1. 1. The utility model provides a breather plug, a serial communication port, including the air lock body, air lock body one end is open end, the other end is the blind end, a plurality of gas pockets have been seted up to the blind end, this internal runner that is equipped with of air lock, along the direction of open end to blind end, the runner includes inlet channel and filter core passageway, be equipped with a plurality of filter cores with filter core passageway sliding connection in proper order in the filter core passageway, in two adjacent filter cores, the filter core diameter that is close to open end is greater than another filter core diameter, the filter core is close to the tip of open end and adopts the frustum structure, the filter core passageway includes the passageway portion with a plurality of filter cores one-to-one, be equipped with the conical transition portion corresponding with the frustum structure between the adjacent passageway portion, be equipped with the flexible filter piece of being made by the hydrophobic microporous material between the filter core that is closest to the blind end and the blind end.
  2. 2. A vent plug according to claim 1, wherein the flexible filter member is a membrane paper made of a hydrophobic microporous material; Further, the pore size of the hydrophobic microporous material is not greater than 0.1mm.
  3. 3. A vent plug according to claim 1, wherein the vent plug body is provided with an annular mounting groove at a location on the periphery of the flexible filter element, and a flexible reinforcing ring is provided within the annular mounting groove.
  4. 4. The vent plug according to claim 1, wherein two filter elements are arranged in the filter element channel, the two filter elements are a first filter element and a second filter element respectively along the direction from the open end to the closed end of the air plug body, the diameter of the first filter element is smaller than that of the second filter element, and the end parts of the first filter element and the second filter element, which are close to the open end, are both provided with frustum structures; Correspondingly, the filter element channel comprises a first channel part matched with the first filter element and a second channel part matched with the second filter element, a conical first transition part matched with the frustum structure of the first filter element is arranged between the first filter element and the air inlet channel, and a second transition part matched with the frustum structure of the second filter element is arranged between the first filter element and the second filter element.
  5. 5. A vent plug according to claim 1, wherein the air inlet passage has a stiffening rib disposed therein.
  6. 6. A vent plug according to claim 1 wherein the filter element is made of a fluororubber material, and wherein the filter element is internally provided with gas passages for flowing gas, and wherein the distribution density of the gas passages in the filter element adjacent to the open end of two adjacent filter elements is smaller than the distribution density of the gas passages in the other filter element.
  7. 7. A vent plug according to claim 1, wherein the outer periphery of the plug body is provided with an annular boss provided with a seal ring mounting groove in which a seal ring is provided for disposition between the plug body and a vent port of the gearbox.
  8. 8. A vent plug according to claim 1, wherein the outer surface of the closed end of the vent plug body is provided with a hydrophobic coating.
  9. 9. A gearbox, characterized in that a breather plug according to any one of claims 1-8 is provided.
  10. 10. An automobile, characterized in that a gearbox according to claim 9 is provided.

Description

Ventilation plug, gearbox and automobile Technical Field The invention relates to the technical field of automobiles, in particular to a vent plug, a gearbox and an automobile. Background The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. In the field of automotive transmission vent plugs today, single filter plug type vent plug designs are commonly employed, which use separate filter blocking components. Under conventional working conditions, the structure can meet the requirements of basic water resistance and ventilation. However, when the traditional single-filter plug type ventilation plug structure is too deep in wading, the water pressure is higher, the ventilation plug cannot be effectively closed, water flows into the gearbox through the air vent, so that the oil emulsification of the gearbox is invalid, when the single-filter plug type ventilation plug structure is large in long-term vibration and temperature fluctuation, the filter plug bears high-strength impact and collision, the filter plug is easy to wear, the ventilation plug needs to be frequently replaced, the cost of a vehicle is increased, and the quality requirement of a user cannot be met. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a vent plug, a gearbox and an automobile, and overcomes the defects existing in the current vent plug. In order to achieve the above object, the present invention is realized by the following technical scheme: In a first aspect, an embodiment of the present invention provides a ventilation plug, including a gas plug body, one end of the gas plug body is an open end, the other end is a closed end, a plurality of air holes are provided at the closed end, a flow channel is provided in the gas plug body, along the direction from the open end to the closed end, the flow channel includes an air inlet channel and a filter core channel, a plurality of filter cores slidingly connected with the filter core channel are sequentially provided in the filter core channel, the diameter of the filter core adjacent to the open end is larger than that of the other filter core in two adjacent filter cores, the end of the filter core adjacent to the open end adopts a frustum structure, the filter core channel includes channel portions corresponding to the filter cores one by one, a tapered transition portion corresponding to the frustum structure is provided between the adjacent channel portions, and a flexible filter made of a hydrophobic microporous material is provided between the filter core closest to the closed end and the closed end. Optionally, the flexible filter element is a membrane paper made of a hydrophobic microporous material. Further, the pore size of the hydrophobic microporous material is not greater than 0.1mm. Optionally, in the air plug body, the position that is located flexible filter piece periphery is provided with annular mounting groove, and annular mounting groove is inside to be equipped with flexible reinforcement circle. Optionally, two filter elements are arranged in the filter element channel, the two filter elements are a first filter element and a second filter element respectively along the direction from the open end to the closed end of the air plug body, the diameter of the first filter element is smaller than that of the second filter element, and frustum structures are arranged at the ends of the first filter element and the second filter element, which are close to the open end; Correspondingly, the filter element channel comprises a first channel part matched with the first filter element and a second channel part matched with the second filter element, a conical first transition part matched with the frustum structure of the first filter element is arranged between the first filter element and the air inlet channel, and a second transition part matched with the frustum structure of the second filter element is arranged between the first filter element and the second filter element. Optionally, a reinforcing rib is arranged in the air inlet channel. Optionally, the filter core adopts fluororubber material to make, and the filter core is inside to be equipped with the gas channel that is used for flowing gas, and among two adjacent filter cores, the distribution density of gas channel in the filter core that is close to open end is less than the distribution density of gas channel of another filter core. Optionally, the periphery of the air plug body is provided with an annular boss, the annular boss is provided with a sealing ring mounting groove, and a sealing ring arranged between the air plug body and the vent of the gearbox is arranged in the sealing ring mounting groove. Optionally, the outer surface of the closed end of the air plug body is provided with a hydrophobic coating. In a second aspect, embodiments of the present invention