A reducer housing with a breather plug function

Abstract

This utility model discloses a reducer housing with a vent plug function, including a housing with an air intake channel and an exhaust channel. The outer side of the housing extends outwards at corresponding locations of the air intake and exhaust channels to form an air intake hollow column and an exhaust hollow column, respectively. A waterproof and breathable membrane is provided at the outer end of the air intake hollow column. Dust covers are respectively provided around the air intake and exhaust hollow columns, with ventilation gaps between the air intake and exhaust hollow columns and their corresponding dust covers. An elastic air intake valve core is provided in the inner section of the air intake channel, elastically sealing the air intake channel outwards. An elastic exhaust valve core is provided in the outer section of the exhaust channel, elastically sealing the exhaust channel inwards. Compared with the prior art, this utility model has the following advantages: by separating and independently setting the air intake and exhaust channels, and utilizing the effect of unidirectional airflow, it effectively avoids contact between the waterproof and breathable membrane and oil / gas, and is less prone to loosening or falling off.

Description

Technical Field

[0001] This utility model relates to automotive parts, and more particularly to a reducer housing with a vent plug function. Background Technology

[0002] During gearbox operation, temperature fluctuations occur inside the housing. To ensure pressure balance, a vent plug is typically designed. At the outer end of the vent plug, a waterproof and breathable membrane usually provides both waterproofing and ventilation. However, this membrane has poor oil resistance, and oil and gas molecules within the gearbox housing can come into contact with it during operation, causing its performance to deteriorate and eventually fail. To address this issue, a filter element is usually added to the vent plug. However, the filter element has limited filtration capacity; over time, it becomes saturated, allowing oil and gas molecules to continue contacting the membrane, further reducing its breathability.

[0003] Furthermore, the vent plug is generally connected to the reducer housing by a threaded connection, which is complex in structure. The hollow thread of the vent plug has low strength, and long-term operation may cause the vent plug to loosen or fall off, resulting in the failure of the vent plug function. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a reducer housing with a vent plug function. The intake channel and exhaust channel are set separately and independently. By utilizing the effect of unidirectional airflow, the waterproof and breathable membrane is effectively prevented from contacting oil and gas. Structurally, the possibility of the waterproof and breathable membrane failing due to contact with oil and gas is eliminated, and it is not easy to loosen or fall off.

[0005] This utility model is achieved through the following technical solution:

[0006] A reducer housing with a vent plug function includes a housing, an air intake channel and an exhaust channel on the housing, and an air intake hollow column and an exhaust hollow column extending outward from the outer side of the housing at the corresponding positions of the air intake channel and the exhaust channel, respectively. A waterproof and breathable membrane is provided at the outer end of the air intake hollow column.

[0007] The intake hollow column and the exhaust hollow column are respectively covered with dust covers, and ventilation gaps are left between the intake hollow column and the corresponding dust covers.

[0008] The inner section of the air intake passage is equipped with a flexible air intake valve core, which can elastically block the air intake passage outward through the flexible air intake valve core;

[0009] The outer section of the exhaust passage is equipped with a flexible exhaust valve core, which elastically blocks the exhaust passage inward.

[0010] As a preferred embodiment of the reducer housing with the above-mentioned vent plug function, the air intake channel is a stepped channel with a large inner diameter and a small outer diameter, and an air intake stepped surface is formed between the inner and outer sections of the air intake channel. The elastic air intake valve core elastically blocks the air intake stepped surface of the air intake channel outward.

[0011] As a preferred embodiment of the reducer housing with the above-mentioned vent plug function, the outer wall of the intake hollow column has at least one first vent groove extending along the axial direction, and the gap formed by the dust cover and the first vent groove of the intake hollow column forms the vent gap.

[0012] As a preferred embodiment of the reducer housing with the above-mentioned vent plug function, the elastic intake valve core includes an intake limiting member, an intake elastic member, and an intake sealing gasket arranged sequentially from the inside to the outside along the inner section of the intake channel. Both the intake limiting member and the intake elastic member are hollow structures. The intake limiting member is fixedly installed on the inner section of the intake channel. Under the elastic force of the intake elastic member, the intake sealing gasket elastically presses against the intake step surface.

[0013] As a preferred embodiment of the reducer housing with the aforementioned vent plug function, the inner section of the intake channel is a stepped channel with a larger inner section and a smaller outer section. The intake limiting component is located at the larger end of the inner section of the intake channel, while the intake elastic component and the intake sealing gasket are located at the smaller end of the inner section of the intake channel.

[0014] As a preferred embodiment of the reducer housing with the above-mentioned vent plug function, the exhaust channel is a stepped channel with a small inner diameter and a large outer diameter, and an exhaust stepped surface is formed between the outer and inner sections of the exhaust channel. The elastic exhaust valve core elastically blocks the exhaust stepped surface of the exhaust channel inward.

[0015] As a preferred embodiment of the reducer housing with the above-mentioned vent plug function, the outer wall of the exhaust hollow column has at least one second vent groove extending axially, and the gap formed by the dust cover and the second vent groove of the exhaust hollow column forms the vent gap.

[0016] As a preferred embodiment of the reducer housing with the above-mentioned vent plug function, the elastic exhaust valve core includes an exhaust limiting member, an exhaust elastic member, and an exhaust sealing gasket arranged sequentially from the outside to the inside along the outer section of the exhaust channel. The exhaust limiting member and the exhaust elastic member are both hollow structures. The exhaust limiting member is fixedly installed on the outer section of the exhaust channel. Under the elastic force of the exhaust elastic member, the exhaust sealing gasket elastically presses inward against the exhaust step surface.

[0017] As a preferred embodiment of the reducer housing with the aforementioned vent plug function, the outer section of the exhaust channel is a stepped channel with a smaller inner section and a larger outer section. The exhaust limiting member is located at the larger end of the outer section of the exhaust channel, while the exhaust elastic member and the exhaust sealing gasket are located at the smaller end of the outer section of the exhaust channel.

[0018] This invention has the following advantages over the prior art:

[0019] This utility model provides a reducer housing with a vent plug function. By separating and independently setting the intake and exhaust channels, and setting unidirectional elastic intake valve cores and elastic exhaust valve cores with opposite conduction directions in the intake and exhaust channels respectively, it effectively prevents oil and gas in the inner cavity of the reducer housing from contacting the waterproof and breathable membrane, thus preventing the waterproof and breathable membrane from failing due to contact with oil and gas, thereby ensuring the performance of the waterproof and breathable membrane. At the same time, the intake and exhaust channels are directly formed on the reducer housing, and the elastic intake valve cores and elastic exhaust valve cores are respectively set in the intake and exhaust channels, realizing the integration of the intake and exhaust structure on the housing. There is no need for a separate vent plug part, which solves the problem of vent plugs easily loosening or falling off after long-term use in the prior art, and improves the service life. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention.

[0021] Figure 2 This is an enlarged view of the intake hollow column and exhaust hollow column of this utility model.

[0022] Figure 3 This is a plan view of the present invention.

[0023] Figure 4 yes Figure 3 AA cross-section view.

[0024] Figure 5 yes Figure 3 BB cross-section.

[0025] The following are the labels in the diagram: 1. Housing; 2. Intake channel; 3. Exhaust channel; 4. Hollow intake column; 5. Hollow exhaust column; 6. Waterproof and breathable membrane; 7. Intake dust cover; 8. Exhaust dust cover; 9. First vent groove; 10. Second vent groove; 11. Intake limiting component; 12. Intake elastic component; 13. Intake sealing gasket; 14. Exhaust limiting component; 15. Exhaust elastic component; 16. Exhaust sealing gasket. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0027] See Figures 1 to 5This embodiment discloses a reducer housing with a vent plug function, including a housing 1. The housing 1 is provided with an air intake channel 2 and an exhaust channel 3. The outer side of the housing 1 extends outward at the corresponding positions of the air intake channel 2 and the exhaust channel 3 to form an air intake hollow column 4 and an exhaust hollow column 5, respectively. A waterproof and breathable membrane 6 is attached to the outer end of the air intake hollow column 4, which serves to provide waterproofing and ventilation. Dust covers are respectively provided around the air intake hollow column 4 and the exhaust hollow column 5. The dust covers are connected to the air intake hollow column 4 or the exhaust hollow column 5 by interference fit, threaded connection or snap-fit. The two dust covers are an air intake dust cover 7 and an exhaust dust cover 8, respectively. Ventilation gaps are left between the air intake hollow column 4 and the exhaust hollow column 5 and their corresponding dust covers. At least one first vent groove 9 extending axially is opened on the outer wall of the air intake hollow column 4. The gap formed by the air intake dust cover 7 and the first vent groove 9 of the air intake hollow column 4 forms the air intake ventilation gap. The outer wall of the exhaust hollow column 5 has at least one second venting groove 10 extending axially. The gap formed by the exhaust dust cover 8 and the second venting groove 10 of the exhaust hollow column 5 forms an exhaust venting gap. A venting gap is left between the dust cover and the outer periphery of the intake hollow column 4 or the exhaust hollow column 5, which acts as the first layer of barrier against external pollutants. The waterproof and breathable membrane 6 can further prevent external pollutants from entering the inner cavity of the reducer housing and prevent oil leakage inside the reducer housing.

[0028] The inner section of the intake passage 2 is equipped with a flexible intake valve core, which elastically seals the intake passage 2 outward. The intake passage 2 is a stepped passage with a large inner diameter and a small outer diameter. An intake step surface is formed between the inner and outer sections of the intake passage 2, and the flexible intake valve core elastically seals the intake step surface of the intake passage 2 outward.

[0029] The flexible intake valve core includes an intake limiting member 11, an intake elastic member 12, and an intake sealing gasket 13 arranged sequentially from the inside to the outside along the inner section of the intake channel 2. Both the intake limiting member 11 and the intake elastic member 12 are hollow structures. The intake limiting member 11 is fixedly installed on the inner section of the intake channel 2, limiting the intake elastic member 12. Under the elastic force of the intake elastic member 12, the intake sealing gasket 13 elastically presses outward against the intake step surface. The inner section of the intake channel 2 is a stepped channel that is wider at the inside and narrower at the outside. The intake limiting member 11 is located at the wider end of the inner section of the intake channel 2, and the two can be connected by interference fit or threaded connection. The intake elastic member 12 and the intake sealing gasket 13 are located at the narrower end of the inner section of the intake channel 2.

[0030] The outer section of the exhaust passage 3 is equipped with an elastic exhaust valve core, which elastically seals the exhaust passage 3 inward. The exhaust passage 3 is a stepped passage with a small inner diameter and a large outer diameter, forming an exhaust step surface between the outer and inner sections. The elastic exhaust valve core elastically seals the exhaust step surface of the exhaust passage 3 inward.

[0031] The resilient exhaust valve core includes an exhaust limiting member 14, an exhaust elastic member 15, and an exhaust sealing gasket 16 arranged sequentially from the outside to the inside along the outer section of the exhaust channel 3. Both the exhaust limiting member 14 and the exhaust elastic member 15 are hollow structures. The exhaust limiting member 14 is fixedly installed on the outer section of the exhaust channel 3, limiting the exhaust elastic member 15. Under the elastic force of the exhaust elastic member 15, the exhaust sealing gasket 16 elastically presses inward against the exhaust step surface. The outer section of the exhaust channel 3 is a stepped channel with a smaller inner section and a larger outer section. The exhaust limiting member 14 is located at the larger end of the outer section of the exhaust channel 3, and the two can be connected by interference fit or threaded connection. The exhaust elastic member 15 and the exhaust sealing gasket 16 are located at the smaller end of the outer section of the exhaust channel 3.

[0032] When the car starts running, the temperature and air pressure inside the reducer housing rise, which is higher than the outside air pressure. The intake elastic element 12 in the intake passage 2 presses the intake sealing gasket 13, so that the air inside the reducer housing cannot pass through the intake passage 2 and can only be exhausted by pushing open the exhaust sealing gasket 16 through the exhaust passage 3.

[0033] After the car stops running, the temperature and air pressure inside the reducer housing decrease, falling below the outside air pressure. The intake gasket 13 in the intake passage 2 is pushed open, allowing air to enter the reducer housing; the exhaust gasket 16 in the exhaust passage 3 is pressed down, preventing air from passing through.

[0034] The reducer housing provided in this embodiment has an intake channel 2 and an exhaust channel 3 separately provided on the housing 1. During the exhaust process, since the gas does not exit from the intake channel 2, the waterproof and breathable membrane 6 will not come into contact with the oil and gas inside the reducer housing, thus ensuring the performance of the waterproof and breathable membrane 6. At the same time, the intake and exhaust structures are integrated on the housing 1, eliminating the need for a separate vent plug part, which meets the integration requirements and solves the problem of vent plugs easily loosening or falling off after long-term use in the prior art; moreover, the dust cover is lightweight, receives little impact during operation, and is not easy to fall off.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A decelerator housing having a breather plug function, comprising a housing, characterized by: The housing is provided with an air intake channel and an exhaust channel. The outer side of the housing extends outward at the corresponding positions of the air intake channel and the exhaust channel to form an air intake hollow column and an exhaust hollow column, respectively. The outer end of the air intake hollow column is provided with a waterproof and breathable membrane. The intake hollow column and the exhaust hollow column are respectively covered with dust covers, and ventilation gaps are left between the intake hollow column and the corresponding dust covers. The inner section of the air intake passage is equipped with a flexible air intake valve core, which can elastically block the air intake passage outward through the flexible air intake valve core; The outer section of the exhaust passage is equipped with a flexible exhaust valve core, which elastically blocks the exhaust passage inward.

2. The decelerator housing having a breather plug function according to claim 1, characterized by: The intake channel is a stepped channel with a large inner diameter and a small outer diameter. An intake step surface is formed between the inner and outer sections of the intake channel, and the elastic intake valve core elastically blocks the intake step surface of the intake channel outward.

3. The decelerator housing having a breather plug function according to claim 1, characterized by: The outer wall of the hollow intake column has at least one first venting groove extending axially, and the gap formed by the dust cover and the first venting groove of the hollow intake column forms the venting gap.

4. The decelerator housing having a breather plug function according to claim 2, characterized by: The elastic intake valve core includes an intake limiting component, an intake elastic component, and an intake sealing gasket arranged sequentially from the inside to the outside along the inner section of the intake channel. Both the intake limiting component and the intake elastic component are hollow structures. The intake limiting component is fixedly installed on the inner section of the intake channel. Under the elastic force of the intake elastic component, the intake sealing gasket elastically presses outward against the intake step surface.

5. The decelerator housing having a breather plug function according to claim 4, characterized by: The inner section of the intake channel is a stepped channel that is larger on the inside and smaller on the outside. The intake limiting component is located at the larger end of the inner section of the intake channel, while the intake elastic component and the intake sealing gasket are located at the smaller end of the inner section of the intake channel.

6. The decelerator housing having a breather plug function according to claim 1, characterized by: The exhaust channel is a stepped channel with a small inner diameter and a large outer diameter. An exhaust step surface is formed between the outer and inner sections of the exhaust channel, and the elastic exhaust valve core elastically blocks the exhaust step surface of the exhaust channel inward.

7. The decelerator housing having a breather plug function according to claim 1, characterized by: The outer wall of the hollow exhaust column has at least one second venting groove extending axially, and the gap formed by the dust cover and the second venting groove of the hollow exhaust column forms the venting gap.

8. The decelerator housing having a breather plug function according to claim 6, characterized by: The elastic exhaust valve core includes an exhaust limiting component, an exhaust elastic component, and an exhaust sealing gasket arranged sequentially from the outside to the inside along the outer section of the exhaust channel. Both the exhaust limiting component and the exhaust elastic component are hollow structures. The exhaust limiting component is fixedly installed on the outer section of the exhaust channel. Under the elastic force of the exhaust elastic component, the exhaust sealing gasket elastically presses inward against the exhaust step surface.

9. A reducer housing having a breather plug function according to claim 8, characterized in that: The outer section of the exhaust channel is a stepped channel with a smaller inner section and a larger outer section. The exhaust limiting component is located at the larger end of the outer section of the exhaust channel, while the exhaust elastic component and the exhaust sealing gasket are located at the smaller end of the outer section of the exhaust channel.

Images