CN219655217U - Venting member and venting cap thereof - Google Patents

Abstract

The utility model discloses a ventilation member which can be connected with a sealed box body, wherein the ventilation member comprises a ventilation pipe and a ventilation cap, the ventilation pipe forms a ventilation channel, a first inlet and a second outlet, the ventilation pipe is provided with a connecting end part and a radial deformation end part, the radial deformation end part is connected with the sealed box body, and air flow can enter and exit the ventilation channel through the first inlet and the second outlet. The ventilation cap comprises a cap body and a blocking structure, wherein the cap body forms an installation space and an installation opening, a ventilation groove is formed between the cap body and the blocking structure, the connecting end part of the ventilation pipe is inserted into the ventilation groove formed by the ventilation cap body through the installation opening, a ventilation gap is formed between the blocking structure and the connecting end part, a ventilation structure is formed between the end face of the connecting end part and the bottom wall of the installation space, and the ventilation structure is used for communicating the ventilation gap with the ventilation groove.

Description

Venting member and venting cap thereof

Technical Field

The present utility model relates to automotive parts, and more particularly to vent members and vent caps therefor.

Background

There are many seal assemblies in automobiles, such as transmissions, transfer cases, and the like. When the automobile transmission works, the internal gear is meshed for transmission, so that the temperature in the transmission is rapidly increased, the air and oil in the transmission can be thermally expanded, the sealing element of the automobile transmission is easy to lose efficacy, and the oil leakage of the transmission is caused, and therefore, the automobile transmission is provided with vent holes for connecting vent pipes so as to balance the air pressure difference in the transmission.

In order to prevent ponding and dust from entering the pipe from the mouth of pipe of breather pipe, can set up the breather plug in the mouth of pipe of breather pipe, when the inside atmospheric pressure of derailleur is great, gaseous accessible breather plug and pipeline are discharged to external environment, and the flow direction of gas is comparatively simple, and dust and ponding are easy to get into in the breather pipe from the breather plug.

In addition, the existing breather pipe and the gearbox are in interference press fit, but the tightness is poor, and when the temperature in the gearbox rises sharply, air and oil in the gearbox can flow out from the joint of the breather pipe and the gearbox.

Disclosure of Invention

An advantage of the present utility model is to provide a venting member and a venting cap therefor that, in use, is more complex in the direction of the gas flow, ensuring that dust and water do not readily enter the vent tube through complex passages while ensuring proper ingress and egress of the gas flow.

It is an advantage of the present utility model to provide a vent member and its vent cap that can form a sealed connection with a transmission to prevent air and oil from the transmission interior from escaping from the connection of the vent tube to the transmission.

To achieve at least one of the above advantages, the present utility model provides a venting member connectable with a sealed case, the venting member comprising:

the vent pipe is provided with a connecting end part forming the first inlet and the first outlet and a radial deformation end part forming the second inlet and the second outlet, the radial deformation end part forming the second inlet and the second outlet is detachably connected with the sealed box body, and air flow can enter and exit the vent pipe through the first inlet and the second outlet to form the flow passage;

the ventilation cap comprises a cap body and a blocking structure, wherein the cap body forms a mounting space and a mounting opening communicated with the mounting space, the blocking structure extends along the axial direction of the mounting space and is perpendicular to the bottom wall of the mounting space formed by the cap body so as to form a circulation groove between the cap body and the blocking structure, the connecting end part of the ventilation pipe is inserted into the circulation groove formed by the ventilation cap body through the mounting opening, the blocking structure is inserted into the connecting end part through the first inlet and outlet, a circulation gap is formed between the blocking structure and the connecting end part, a ventilation structure is formed between the end face of the connecting end part and the bottom wall of the mounting space formed by the cap body, and the ventilation structure is used for communicating the circulation gap and the circulation groove.

According to an embodiment of the utility model, the ventilation structure is implemented as a gap between an end face of the connection end portion and a bottom wall of the installation space formed by the cover body.

According to an embodiment of the present utility model, at least one limiting structure is formed on the cover, the limiting structure protrudes outwards along the bottom wall of the installation space, and the limiting structure is partially disposed on the moving path of the connection end.

According to an embodiment of the utility model, the blocking structure forms at least one ventilation groove, the blocking structure has a front portion, a middle portion and a rear portion, an end portion of the front portion extends radially to form the middle portion, an end portion of the middle portion remote from the front portion is radially narrowed to form the rear portion, the front portion is smaller than the ventilation channel in radial direction, the middle portion is larger than the ventilation channel in radial direction, when the blocking structure is inserted into the connection end portion, the middle portion is in interference fit with an inner wall of the ventilation channel, the rear portion is smaller than the ventilation channel, so that the ventilation gap is formed between the rear portion and the connection end portion, and the ventilation groove is formed between the front portion and a part of the rear portion, so that the ventilation groove is communicated with the ventilation gap.

According to an embodiment of the present utility model, the blocking structure forms a plurality of the ventilation grooves, and the ventilation grooves are communicated with each other.

According to an embodiment of the present utility model, the radially deformed end portion forms the radially adjustable second inlet and outlet, the radially deformed end portion has at least one open end and at least one closed end disposed opposite to the open end, the radially deformed end portion extends between the open end and the closed end to form at least one adjustment groove communicating with the flow passage, and an extending direction of the adjustment groove is parallel to an extending direction of a portion of the flow passage formed by the radially deformed end portion, the open end is disposed on the same side as the second inlet and outlet, the radially deformed end portion has a relaxed state and a tightened state, a diameter of the second inlet and outlet in the relaxed state is smaller than a diameter of the second inlet and outlet in the tightened state, a cross-sectional dimension of the radially deformed end portion is gradually decreased or the same from the open end to the closed end while the radially deformed end portion is in the relaxed state, the blocking structure is inserted into the radially deformed end portion through the second inlet and outlet, whereby the radially deformed end portion is transformed from the relaxed state to the relaxed state, the diameter of the second inlet and outlet is gradually decreased from the open end to the closed end.

According to an embodiment of the present utility model, the pipe length of the vent pipe is set to 350mm to 400mm.

According to an embodiment of the present utility model, the ventilation member further comprises a connector sleeved on the radially deformed end of the ventilation tube for sealingly connecting the ventilation member to a transmission.

According to an embodiment of the utility model, the vent pipe is implemented in plastic and the blocking structure is implemented in rubber.

To achieve at least one of the above advantages, the present utility model provides a venting cap detachably mountable to a vent pipe, the venting cap comprising:

the cover body is provided with an installation space and an installation opening communicated with the installation space;

the blocking structure is formed by extending the bottom wall of the installation space along the axial direction of the installation space and perpendicular to the cover body, so that a circulation groove is formed between the cover body and the blocking structure, one end part of the ventilation pipe is inserted into the circulation groove formed by the ventilation cap through the installation opening, the blocking structure is inserted into the ventilation pipe, a circulation gap is formed between the blocking structure and the pipe wall of the ventilation pipe, a ventilation structure is formed between the end face of the ventilation pipe and the bottom wall of the installation space formed by the cover body, and the ventilation structure is used for communicating the circulation gap and the circulation groove.

Drawings

Fig. 1 shows a schematic structural view of the ventilation member according to the present utility model.

Figure 2 shows a cross-sectional view of the vent member of the present utility model.

Figure 3 shows a cross-sectional view of the vent tube of the present utility model.

Fig. 4 shows a schematic structural view of the venting cap of the present utility model.

Fig. 5 shows a cross-sectional view of a vented cap in accordance with the present utility model.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

The vent member according to a preferred embodiment of the present utility model, which is detachably mounted to a sealed housing, will be described in detail below. It will be appreciated that the seal housing may be implemented as a gearbox, transfer case, etc., and that the following embodiments are described based on the seal housing being implemented as a gearbox for ease of understanding of the teachings of the present utility model by those skilled in the art.

Referring to fig. 1 to 3, the vent member includes a vent tube 100 and a vent cap 200.

Referring to fig. 3, the vent pipe 100 forms a flow passage 1001, a first port 1002 communicating with the flow passage 1001, and a second port 1003 communicating with the flow passage 1001.

The breather pipe 100 is detachably connected to a transmission case at one end portion forming the second port 1003. Air flow may enter and exit the flow channel 1001 formed by the breather pipe 100 through the first inlet/outlet 1002, thereby balancing the air pressure difference in the transmission case communicating with the breather pipe 100.

Preferably, the pipe length of the ventilation pipe 100 is set to 260mm to 400mm.

More preferably, the pipe length of the ventilation pipe 100 is set to 350mm to 400mm. The first inlet/outlet 1002 formed by the vent pipe 100 may be disposed at a higher position of the vehicle body than the conventional vent pipe, so as to prevent water accumulated at a lower position from entering the flow channel 1001 from the first inlet/outlet 1002.

In one example, the vent tube 100 is implemented in plastic.

Preferably, the vent tube 100 has a connecting end 110 defining the first access opening 1002 and a radially deformed end 120, the radially deformed end 120 defining the radially adjustable second access opening 1003. The radially deformed end 120 of the breather tube 100 is mounted to a transmission case.

Referring to fig. 1, the radially deformed end portion 120 has at least one open end 121 and at least one closed end 122 disposed opposite the open end 121. The radially deformed end portion 120 extends between the open end 121 and the closed end 122 to form at least one adjustment groove 1201 communicating with the flow channel 1001, and the extending direction of the adjustment groove 1201 is parallel to the extending direction of a portion of the flow channel 1001 formed by the radially deformed end portion 120. The open end 121 is disposed on the same side as the second port 1003.

The radially deformed end 120 has a relaxed state and a contracted state. The diameter of the second port 1003 is smaller than the diameter of the second port 1003 in the contracted state when the radially deformed end 120 is in the relaxed state.

When the radially deformed end 120 is in the relaxed state, the cross-sectional dimension of the radially deformed end 120 is gradually reduced or the same from the open end 121 toward the closed end 122. The gearbox is inserted into the radially deformed end 120 through the second inlet and outlet 1003, so that the radially deformed end 120 is converted from the relaxed state to the tightened state, the cross-sectional dimension of the radially deformed end 120 gradually increases from the open end 121 toward the closed end 122, and the second inlet and outlet 1003 has a radially reduced tendency, so that the breather pipe 100 and the gearbox can be stably connected.

As a preferred embodiment, the radially deformed end 120 is embodied as a tri-lobed jaw.

Referring to fig. 2 and 4, in particular, the venting cap 200 includes a cover 210 and a blocking structure 220.

The cover 210 forms an installation space 2101 and an installation port 2102 communicating with the installation space 2101. The blocking structure 220 is formed to extend along an axial direction of the installation space 2101 and perpendicular to the bottom wall of the installation space 2101 formed by the cover 210, so as to form a flow channel 2001 between the cover 210 and the blocking structure 220.

The connection end 110 of the vent pipe 100 is inserted into the flow channel 2001 formed in the vent cap 200 through the mounting hole 2102. When the blocking structure 220 is inserted into the connection end 110 through the first inlet/outlet 1002, a flow gap 10001 is formed between the blocking structure 220 and the connection end 110, and a ventilation structure 10002 is formed between the end surface of the connection end 110 and the bottom wall of the installation space 2101 formed by the cover 210. The ventilation structure 10002 is used for communicating the circulation gap 10001 and the circulation tank 2001.

That is, the air flow in the gearbox can enter the circulation channel 1001 through the second inlet and outlet 1003 formed by the ventilation pipe 100, and flow to the circulation gap 10001 through the circulation channel 1001, so that the air flow flows from the ventilation structure 10002 to the circulation groove 2001 through the circulation gap 10001, and finally is discharged from the mounting hole 2102, so that the high-pressure air flow in the gearbox is discharged out of the gearbox, and the purpose of balancing the air pressure in the gearbox is achieved. It will also be appreciated that when the air pressure in the gearbox is low, the flow direction of the air flow is reversed and redundant description is omitted here. In order to facilitate understanding of the technical solution of the present utility model by those skilled in the art, the following embodiments are described by taking the case that the high pressure air flow in the gearbox is discharged outside the gearbox as an example.

Compared to the existing ventilation cap, the ventilation cap 200 forms a labyrinth channel with the ventilation tube 100 when in use, so that dust and accumulated water are not easy to enter the ventilation channel 1001 through the labyrinth channel while ensuring that the air flow is normally in and out.

It should be noted that, when the venting cap 200 is assembled to the connection end 110, the blocking structure 220 is configured to reduce the caliber of the first inlet/outlet 1002, and the cover 210 is configured to block the first inlet/outlet 1002, so as to prevent water and dust from entering the gearbox from the first inlet/outlet 1002 through the flow channel 1001.

In an embodiment, the ventilation structure 10002 is implemented as a gap between the end face of the connection end 110 and the bottom wall of the installation space 2101 formed by the cover 210.

Preferably, at least one limiting structure 211 is formed on the cover 210.

In one embodiment, the limiting structure 211 is implemented as a protrusion. The limiting structure 211 protrudes outwards along the bottom wall of the installation space 2101, and the limiting structure 211 is arranged on the moving path of the connecting end portion 110, so that the end face of the connecting end portion 110 is prevented from being completely attached to the bottom wall of the installation space 2101. The ventilation structure 10002 is implemented as a gap between the end face of the connection end portion 110 and the bottom wall of the installation space 2101 formed by the cover 210.

As a variant embodiment, the limit structure 211 is implemented as a groove. The limiting structure 211 is recessed inward along the bottom wall of the installation space 2101, and the limiting structure 211 is partially disposed on the moving path of the connection end 110. The venting structure 10002 is implemented as a gap between the end face of the connection end 110 and the inner wall of the groove.

It should be noted that the blocking structure 220 forms at least one ventilation slot 2201. The direction of extension of the vent slot 2201 is parallel to the axis of the blocking structure 220. Air flow can enter and exit the flow gap 10001 through the vent slot 2201.

Referring to fig. 5 in particular, the blocking structure 220 has a front portion 221, a middle portion 222, and a rear portion 223. An end of the front portion 221 extends radially to form the middle portion 222, and an end of the middle portion 222 remote from the front portion 221 tapers radially to form the rear portion 223.

The front portion 221 is smaller in radial direction than the flow channel 1001 so that the front portion 221 of the blocking structure 220 can be easily inserted into the connection end 110. The middle portion 222 has a radial direction slightly larger than that of the ventilation channel 1001, so that when the blocking structure 220 is inserted into the connection end portion 110, the middle portion 222 is in interference fit with the inner wall of the ventilation channel 1001, so that the ventilation cap 200 is stably connected with the ventilation pipe 100.

The rear portion 223 is smaller in radial direction than the flow passage 1001 so that the flow gap 10001 is formed between the rear portion 223 and the connection end portion 110. The vent slot 2201 extends between the front portion 221 and a portion of the rear portion 223 such that the vent slot 2201 communicates with the flow gap 10001.

Preferably, the blocking structure 220 forms a plurality of the ventilation grooves 2201, and the plurality of ventilation grooves 2201 communicate with each other, thereby increasing the gas flow rate of the ventilation member.

In this way, the air flow in the gearbox can enter the circulation channel 1001 through the second inlet and outlet 1003 formed by the breather pipe 100, the circulation channel 1001 flows to the circulation gap 10001 through the breather groove 2201, flows out from the breather structure 10002, and finally flows out of the mounting hole 2102 from the circulation groove 2001, so that the high-pressure air flow in the gearbox is discharged out of the gearbox, and the purpose of balancing the air pressure in the gearbox is achieved.

In one example, the blocking structure 220 is implemented from a rubber material.

Preferably, the cross-sectional area of the front portion 221 increases gradually from an end of the front portion 221 away from the middle portion 222 toward a direction in which the front portion 221 approaches the middle portion 222, thereby transitioning resistance of the blocking structure 220 when it is inserted into the ventilation pipe 100.

Further, the vent member also includes a connector 300.

The connector 300 is sleeved on the radially deformed end 120 of the breather pipe 100 to sealingly connect the breather member to a transmission case.

Preferably, the connector 300 is implemented as a rubber ring.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims (10)

1. The ventilation component can be connected with a sealed box, its characterized in that, the ventilation component includes:

the vent pipe is provided with a connecting end part forming the first inlet and the first outlet and a radial deformation end part forming the second inlet and the second outlet, the radial deformation end part forming the second inlet and the second outlet is detachably connected with the sealed box body, and air flow can enter and exit the vent pipe through the first inlet and the second outlet to form the flow passage;

the ventilation cap comprises a cap body and a blocking structure, wherein the cap body forms a mounting space and a mounting opening communicated with the mounting space, the blocking structure extends along the axial direction of the mounting space and is perpendicular to the bottom wall of the mounting space formed by the cap body so as to form a circulation groove between the cap body and the blocking structure, the connecting end part of the ventilation pipe is inserted into the circulation groove formed by the ventilation cap body through the mounting opening, the blocking structure is inserted into the connecting end part through the first inlet and outlet, a circulation gap is formed between the blocking structure and the connecting end part, a ventilation structure is formed between the end face of the connecting end part and the bottom wall of the mounting space formed by the cap body, and the ventilation structure is used for communicating the circulation gap and the circulation groove.

2. The vent member according to claim 1, wherein the vent structure is implemented as a gap between an end face of the connection end portion and a bottom wall of the mounting space formed by the cover body.

3. The vent member of claim 2, wherein the cover has at least one limiting structure formed thereon, the limiting structure protruding outwardly along a bottom wall of the mounting space, and the limiting structure being disposed on a path of movement of the connection end.

4. A vent member according to claim 2 or 3, wherein said blocking structure defines at least one vent channel, said blocking structure having a front portion, a middle portion and a rear portion, an end portion of said front portion extending radially to define said middle portion, an end portion of said middle portion remote from said front portion radially reduced to define said rear portion, said front portion being radially smaller than said vent channel, said middle portion being radially larger than said vent channel so that upon insertion of said blocking structure into said connecting end portion, said middle portion is in interference fit with an inner wall of said vent channel, said rear portion being radially smaller than said vent channel so that said flow gap is defined between said rear portion and said connecting end portion, said vent channel being defined between said front portion and a portion of said rear portion, said vent channel being in communication with said flow gap.

5. The vent member of claim 4, wherein the blocking structure forms a plurality of the vent grooves, and wherein the plurality of vent grooves are in communication with one another.

6. The vent member of claim 5, wherein said radially deformed end defines said second access opening which is radially adjustable, said radially deformed end defines at least one open end and at least one closed end disposed opposite said open end, said radially deformed end defines at least one adjustment slot extending between said open end and said closed end in communication with said flow passage, and said adjustment slot extends in a direction parallel to the direction of extension of a portion of said flow passage defined by said radially deformed end, said open end being disposed on the same side as said second access opening, said radially deformed end defining a relaxed state and a contracted state, said second access opening having a smaller diameter than said second access opening in said relaxed state, said radially deformed end defining a cross-sectional dimension which gradually decreases or is the same from said open end toward said closed end when said radially deformed end is in said relaxed state, said blocking structure being disposed on said radially end by said second access opening whereby said radially deformed end is gradually changed from said relaxed state to said contracted state and said radially deformed end defines a radially deformed end having a smaller diameter toward said closed end.

7. The vent member of claim 6, wherein the vent tube has a tube length of 350mm to 400mm.

8. The vent member of claim 7, further comprising a connector that is sleeved over the radially deformed end of the vent tube.

9. The vent member of claim 8, wherein the vent tube is implemented from plastic and the blocking structure is implemented from rubber.

10. The cap of ventilating, can detachably install in a breather pipe, its characterized in that, the cap of ventilating includes:

the cover body is provided with an installation space and an installation opening communicated with the installation space;

the blocking structure is formed by extending the bottom wall of the installation space along the axial direction of the installation space and perpendicular to the cover body, so that a circulation groove is formed between the cover body and the blocking structure, one end part of the ventilation pipe is inserted into the circulation groove formed by the ventilation cap through the installation opening, the blocking structure is inserted into the ventilation pipe, a circulation gap is formed between the blocking structure and the pipe wall of the ventilation pipe, a ventilation structure is formed between the end face of the ventilation pipe and the bottom wall of the installation space formed by the cover body, and the ventilation structure is used for communicating the circulation gap and the circulation groove.