CN214465973U

CN214465973U - Breather plug, pressure relief assembly structure and vehicle

Info

Publication number: CN214465973U
Application number: CN202120432639.2U
Authority: CN
Inventors: 孙鹏飞; 何岩青; 梁学礼; 黄苏成; 盛荣鑫; 周磊; 张振远; 付广柱
Original assignee: Honeycomb Transmission Technology Hebei Co Ltd
Current assignee: Honeycomb Transmission Technology Hebei Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-22
Anticipated expiration: 2031-02-26

Abstract

The utility model belongs to the technical field of the pressure release, a breather plug, pressure release assembly structure and vehicle are disclosed. The vent plug comprises a vent plug main body, a plurality of through grooves of the insertion parts and an oil blocking structure, wherein the vent plug main body comprises a cylindrical insertion part with the axial bottom end being sealed, the through grooves of the insertion parts are formed in the peripheral wall of the cylindrical insertion part and are sequentially arranged in a staggered mode along the axial direction, the oil blocking structure is formed in the cylindrical insertion part and defines an inner airflow channel, and the through grooves of the insertion parts are sequentially arranged on the inner airflow channel along the extending direction of the channel. When the vent plug is mounted on a box body such as a gearbox and the like for use, the inside of the box body and the outside atmosphere can be communicated through an inner air flow channel in the cylindrical insertion part, and the air pressure inside and outside the box body is kept balanced. When oil in the box body enters the inner air flow channel, the oil can be blocked by the oil blocking structure because the inner air flow channel is limited by the oil blocking structure, so that the oil is prevented from splashing or leaking outwards from the inside of the box body.

Description

Breather plug, pressure relief assembly structure and vehicle

Technical Field

The utility model relates to a pressure release technical field specifically, relates to a breather plug, pressure release assembly structure and vehicle.

Background

In a case such as a transmission in a vehicle or a construction machine, a breather plug is generally provided for communicating the inside of the case with the outside atmosphere to keep the pressure inside and outside the case balanced. But current breather plug keeps off oily effect poor, for preventing that the oil in the box from outwards splashing, need look for the space arrangement oil baffle or keep off the oily muscle and realize inside the box usually, so just cause the local increase in box space, increase box weight, influence the whole car and carry on.

SUMMERY OF THE UTILITY MODEL

To prior art's above-mentioned defect or not enough, the utility model provides a breather plug, pressure release assembly structure and vehicle has good oily effect of keeping off, can effectively avoid the oil in the boxes such as gearbox to outwards splash or leak.

In order to achieve the above object, the present invention provides in a first aspect a vent plug comprising:

the vent plug main body comprises a cylindrical insertion part with the axial bottom end closed;

a plurality of insertion part through grooves formed in the circumferential wall of the cylindrical insertion part and arranged in a staggered manner in the axial direction; and

and the oil blocking structure is formed in the cylindrical insertion part and limits an inner airflow channel, and the insertion part through grooves are sequentially arranged on the inner airflow channel along the extending direction of the channel.

Optionally, an inner airflow channel defined by the oil baffle structure extends in a winding way in the axial direction of the cylindrical insertion part.

Optionally, the through-slots of the insertion part at least comprise a first through-slot of the insertion part, a second through-slot of the insertion part and a third through-slot of the insertion part, which are sequentially arranged along the axial direction of the cylindrical insertion part, the first through-slot of the insertion part and the third through-slot of the insertion part are arranged at intervals along the axial direction, and the oil blocking structure comprises an oil blocking rib;

and in the axial spacing area of the first inserting part through groove and the third inserting part through groove, an oil blocking rib extends from the inner peripheral wall of the cylindrical inserting part towards the second inserting part through groove.

Optionally, the oil blocking rib further comprises a top oil blocking rib, the axial top end of the cylindrical insertion part is sealed by the top oil blocking rib formed by protruding downwards, and a vent hole capable of communicating the atmosphere and the inner airflow channel is formed in the top oil blocking rib.

Optionally, the vent hole extends along the radial direction of the cylindrical insertion part and is arranged in radial alignment with the insertion part through groove located at the top end of the cylindrical insertion part in the axial direction.

Optionally, a radially outwardly protruding stop boss is formed on the outer peripheral wall of the tubular insertion part, an anti-rotation limiting rib is formed on the stop boss, and the bottom end of the anti-rotation limiting rib extends downwards beyond the bottom wall surface of the stop boss in the axial direction of the tubular insertion part.

Optionally, the vent plug body further comprises a snap-in portion extending downwardly from the axial bottom wall of the cylindrical plug portion.

Optionally, the vent plug main body further comprises a cylindrical connecting portion extending upwards from the axial top end of the cylindrical insertion portion, the vent plug further comprises a vent plug cap body covering the cylindrical connecting portion, an inter-wall airflow channel capable of being communicated with the atmosphere is formed between the inner wall of the vent plug cap body and the outer wall of the cylindrical connecting portion, a connecting portion hollow cavity is arranged in the cylindrical connecting portion, and the inner airflow channel, the connecting portion hollow cavity and the inter-wall airflow channel are sequentially communicated.

The utility model discloses the second aspect provides a pressure release assembly structure, this pressure release assembly structure include external connection equipment and foretell breather plug, and external connection equipment includes the equipment casing and forms on the equipment casing and with tube-shape grafting portion complex casing spliced eye, interior airflow channel include by the hole perisporium of casing spliced eye with grafting portion link up the groove and prescribe a limit to the fit clearance that forms, still be formed with on the equipment casing with the axial grafting portion bottom link up the casing ventilation structure of groove intercommunication.

The utility model discloses the third aspect provides a vehicle, and this vehicle includes foretell pressure release assembly structure.

Will the utility model discloses a when the ventilation stopper is installed to boxes such as gearbox and is used, because the axial bottom of the tube-shape grafting portion of ventilation stopper main part seals, the interior airflow channel intercommunication in the accessible tube-shape grafting portion between the box is inside and the external atmosphere keeps box internal and external atmospheric pressure balanced. When oil in the box body enters the inner air flow channel, the oil can be blocked by the oil blocking structure because the inner air flow channel is limited by the oil blocking structure, so that the oil is prevented from splashing or leaking outwards from the inside of the box body.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is an exploded view of a vent plug according to an embodiment of the present invention;

FIG. 2 is an exploded view of the vent plug of FIG. 1 from another perspective;

FIG. 3 is an assembled cross-sectional view of the vent plug of FIG. 1 assembled to a transmission case or the like;

fig. 4 is an assembled cross-sectional view of the vent plug of fig. 1 assembled to a transmission case or the like from another perspective.

Description of reference numerals:

10. a vent plug; 1. a vent plug body; 2. a vent plug cap body; 3. a boss of the shell; A. an inner airflow channel; B. the insertion part penetrates through the groove; C. a vent hole; 11. a cylindrical insertion part; 12. a cylindrical connecting portion; 13. a stop boss; 14. a clamping part; 31. a housing insertion hole; 32. a housing vent structure; 33. a limiting groove; b1, a first inserting part penetrating groove; b2, a second inserting part penetrates through the groove; b3, a third inserting part penetrates through the groove; b4, a fourth inserting part penetrates through the groove; 111. an oil blocking rib; 121. an inter-wall airflow channel; 122. a hollow cavity in the connecting part; 123. a first baffle plate; 124. a second baffle; 125. ventilating openings; 131. anti-rotation limiting ribs; 141. a claw; 1111. top oil baffle rib

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

The invention will be described in detail below with reference to the accompanying drawings in conjunction with exemplary embodiments.

As shown in fig. 1 to 4, a first exemplary embodiment of the present invention provides a vent plug 10, where the vent plug 10 includes a vent plug main body 1, a plurality of insertion portion through grooves B, and an oil blocking structure. The vent plug body 1 comprises a cylindrical plug part 11 with a closed axial bottom end, a plurality of plug part through grooves B are formed in the peripheral wall of the cylindrical plug part 11 and are sequentially arranged in a staggered mode along the axial direction, an oil blocking structure is formed in the cylindrical plug part 11 and defines an inner airflow channel A, and the plurality of plug part through grooves B are sequentially arranged on the inner airflow channel A along the extending direction of the channel.

As shown in fig. 1, 2 and 3, specifically, the inner air channel a can communicate the inside and the outside of the transmission case, and can circulate the air inside and outside the transmission case, the inner air channel a includes a plurality of insertion-connection parts through grooves B, and the axial bottom end of the cylindrical insertion-connection part 11 is closed, so that the oil can only circulate through the inner air channel a, but the inner air channel a is limited by the oil blocking structure, so that the oil in the inner air channel a can be blocked by the oil blocking structure, and the oil is prevented from leaking.

In addition, it should be noted that the vent plug of the present embodiment is not limited to the arrangement in the up-down direction when in use.

The embodiment of the present invention provides an embodiment, the vent plug body 1 further includes a tubular connection portion 12 extending upward from the axial top end of the tubular insertion portion 11, the vent plug 10 further includes a vent plug cap body 2 covering the tubular connection portion 12, an inter-wall airflow channel 121 capable of communicating with the atmosphere is formed between the inner wall of the vent plug cap body 2 and the outer wall of the tubular connection portion 12, a hollow cavity 122 is provided in the tubular connection portion 12, and the inner airflow channel a, the hollow cavity 122 in the connection portion and the inter-wall airflow channel 121 communicate in sequence.

As shown in fig. 1 and 4, in the illustrated embodiment, the cylindrical connecting portion 12 is provided with a first baffle 123 and a second baffle 124, and the first baffle 123 and the second baffle 124 are formed with air vents 125 that are staggered with each other, so that an inter-wall airflow channel 121 extending in a circuitous manner is formed between the inner wall of the vent plug cap body 2 and the outer wall of the cylindrical connecting portion 12, thereby forming a labyrinth waterproof structure to prevent water from entering the transmission case. The inside of the transmission case is communicated with the outside through the inner airflow channel A, the hollow cavity 122 of the connecting part and the airflow channel 121 between the walls, so that the internal and external air pressures of the transmission case are balanced.

In the embodiment of the present invention, the inner airflow channel a defined by the oil blocking structure extends in a circuitous manner in the axial direction along the cylindrical insertion part 11.

As shown in fig. 3, in the illustrated embodiment, the inner air flow channel a extends in an S-shaped winding manner, so as to extend the length of the inner air flow channel a, and the bent inner air flow channel a prevents oil from leaking out, thereby achieving a better oil blocking effect.

Furthermore, the through-slot B at least comprises a first through-slot B1, a second through-slot B2, a third through-slot B3, a first through-slot B1 and a third through-slot B3 which are sequentially arranged along the axial direction of the cylindrical socket 11, and the oil-blocking structure comprises an oil-blocking rib 111;

in the axially spaced regions between the first mating member through-groove B1 and the third mating member through-groove B3, the oil dam 111 projects from the inner peripheral wall of the cylindrical mating member 11 toward the second mating member through-groove B2.

As shown in fig. 1, 2 and 3, in the illustrated embodiment, a first mating member through groove B1, a second mating member through groove B2, a third mating member through groove B3 and a fourth mating member through groove B4 are provided on the peripheral wall of the

cylindrical mating member

11, 3 ribs 111 are formed in axially spaced regions of the cylindrical mating member 11, the 3 ribs 111 extend toward the first mating member through groove B1, the second mating member through groove B2 and the third mating member through groove B3, the fourth mating member through groove B4 communicates with the inside of the transmission case, the ribs 111 and the mating member through grooves B form an inner air flow passage a extending in a roundabout manner, and when the oil passes through the inner air flow passage a, the oil is blocked by the ribs 111 to prevent the oil from leaking.

It can be understood that the first inserting-fitting part through groove B1, the second inserting-fitting part through groove B2, the third inserting-fitting part through groove B3 and the oil blocking rib 111 extending toward the second inserting-fitting part through groove B2 in this embodiment can be regarded as a group of roundabout internal air flow passage structural units, and a plurality of groups of internal air flow passage structural units can be arranged in the cylindrical inserting-fitting part 11 in a staggered manner along the axial direction to achieve a better oil blocking effect.

Further, keep off oily muscle 111 still includes top and keep off oily muscle 1111, and the axial top of tube-shape grafting portion 11 is through the sealed setting of top that the protruding oily muscle 1111 that forms of protruding downwards, is formed with the air vent C that can communicate atmosphere and interior airflow channel A on the oily muscle 1111 of top fender.

As shown in fig. 1 and 3, in the illustrated embodiment, the top oil blocking rib 1111 is disposed in a closed manner to prevent oil from directly passing through the hollow cavity 122 of the connecting portion through the inner airflow channel a, thereby reducing the risk of oil leakage. The vent hole C on the top oil blocking rib is communicated with the hollow cavity 122 of the connecting part and then communicated with the outside through the airflow channel 121 between the walls, so that the internal and external air pressures of the transmission box body are balanced.

Further, the vent hole C extends in the radial direction of the cylindrical socket 11 and is arranged in radial alignment with the socket through groove B located at the axially uppermost end of the cylindrical socket 11.

As shown in fig. 3, in the illustrated embodiment, the vent hole C is radially disposed in the top oil blocking rib 1111 along the cylindrical insertion part 11 and is communicated with the first insertion part through groove B1 located at the top end in the axial direction, so that the length of the inner air flow passage a is extended, oil is not easy to enter the hollow cavity of the connecting part from the inner air flow passage a, and the risk of oil leakage is reduced.

In the embodiment of the present invention, the vent plug body 1 further includes a clamping portion 14 extending downward from the axial bottom wall of the cylindrical insertion portion 11.

As shown in fig. 1 and 4, in the illustrated embodiment, the clamping portion 14 includes a claw 141, and the claw 141 is clamped on the inner wall of the transmission case to prevent the vent plug 10 from falling off.

The utility model discloses the second aspect provides a pressure release assembly structure, this pressure release assembly structure includes external connection equipment and foretell breather plug 10, external connection equipment include the equipment casing and form on the equipment casing and with 11 complex casing spliced portion 31 of tube-shape grafting portion, interior airflow channel A includes and is run through groove B by the hole rampart of casing spliced portion 31 and grafting portion and prescribes a limit to the fit-up gap that forms, still be formed with on the equipment casing with the casing ventilation structure 32 that groove B communicates is run through to the grafting portion of axial bottommost.

As shown in fig. 1 and 3, in the illustrated embodiment, only the housing boss 3 of the fitting portion of the vent plug 10 on the device housing is shown, the housing insertion hole 31 is located on the housing boss 3, the housing insertion hole 31 is in interference fit with the cylindrical insertion part 11, the housing vent structure 32 is communicated with the fourth insertion part through groove B4 at the lowermost end, and the hole peripheral wall of the housing insertion hole 31 surrounds the outside of the insertion part through groove B, so that the entire inner gas flow passage a is sealed, and gas inside and outside the device housing can only flow in the inner gas flow passage a through the vent hole C and the fourth insertion part through groove B4 at the lowermost end. In this embodiment, the housing vent structure 32 may be a hole or a flow channel, etc.

The utility model discloses an in the embodiment, be formed with radial outside convex backstop boss 13 on the periphery wall of tube-shape grafting portion 11, be formed with on the backstop boss 13 and prevent changeing spacing muscle 131, in the axial along tube-shape grafting portion 11, prevent that the bottom of changeing spacing muscle 131 surpasss the end wall face of backstop boss 13 downwards.

As shown in fig. 1, after the cylindrical insertion part 11 is inserted into the housing insertion hole 31, the stopper boss 13 limits the insertion depth of the vent plug body 1, the housing boss 3 is formed with a limit groove 33 fitted with the rotation-preventing limit rib 131, and the rotation-preventing limit rib 131 is fitted into the limit groove 33, so that the vent plug body 1 is prevented from rotating, and the fourth insertion part through-groove B4 is abutted against the housing vent structure 32.

The utility model provides a third aspect provides a vehicle, this vehicle include foretell pressure release assembly structure, and this pressure release assembly structure can be used to on the vehicle arbitrary needs set up above-mentioned breather plug's the device, for example, the derailleur, especially the lower two separation and reunion derailleurs of oil viscosity, two separation and reunion derailleurs should not adopt the normal close type breather plug, produce internal pressure easily and cause the leakage risk, the utility model provides a breather plug is particularly useful for two separation and reunion derailleurs.

The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It should be noted that, in the above-mentioned embodiments, the various technical features described in the above-mentioned embodiments can be combined in any suitable way without contradiction, and in order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims

1. A vent plug, characterized in that the vent plug (10) comprises:

the vent plug comprises a vent plug main body (1) and a vent plug main body, wherein the vent plug main body comprises a cylindrical plug part (11) with the axial bottom end closed;

a plurality of insertion part through grooves (B) formed in the circumferential wall of the cylindrical insertion part (11) and arranged in a staggered manner in the axial direction; and

and the oil retaining structure is formed in the cylindrical insertion part (11) and defines an inner air flow channel (A), and the insertion part through grooves (B) are sequentially arranged on the inner air flow channel (A) along the extending direction of the channel.

2. The breather plug according to claim 1, wherein the inner airflow passage (a) defined by the oil baffle structure is provided to extend in a meandering manner in an axial direction of the cylindrical socket part (11).

3. The vent plug according to claim 2, wherein the through-insertion part grooves (B) include at least a first through-insertion part groove (B1), a second through-insertion part groove (B2), and a third through-insertion part groove (B3) that are sequentially arranged in an axial direction of the cylindrical insertion part (11), the first through-insertion part groove (B1) and the third through-insertion part groove (B3) are axially spaced apart, and the oil blocking structure includes an oil blocking rib (111);

wherein the oil blocking rib (111) protrudes from the inner peripheral wall of the cylindrical socket part (11) toward the second socket part through groove (B2) in an axially spaced region between the first socket part through groove (B1) and the third socket part through groove (B3).

4. The vent plug according to claim 3, wherein the oil blocking rib (111) further comprises a top end oil blocking rib (1111), the axial top end of the cylindrical insertion part (11) is closed by the top end oil blocking rib (1111) formed by protruding downwards, and a vent hole (C) capable of communicating the atmosphere with the inner air flow passage (A) is formed in the top end oil blocking rib (1111).

5. The vent plug according to claim 4, wherein the vent hole (C) extends in a radial direction of the cylindrical socket part (11) and is arranged in radial alignment with the socket part through groove (B) located at an axially uppermost end of the cylindrical socket part (11).

6. The vent plug according to claim 1, wherein a stopper boss (13) protruding radially outward is formed on the outer peripheral wall of the cylindrical plug portion (11), an anti-rotation stopper rib (131) is formed on the stopper boss (13), and a bottom end of the anti-rotation stopper rib (131) protrudes downward beyond a bottom wall surface of the stopper boss (13) in the axial direction of the cylindrical plug portion (11).

7. The vent plug according to claim 1, wherein the vent plug body (1) further comprises a catching portion (14) protruding downward from an axial bottom wall of the cylindrical insertion portion (11).

8. The vent plug according to any one of claims 1 to 7, wherein the vent plug body (1) further comprises a cylindrical connecting portion (12) extending upward from an axial top end of the cylindrical insertion portion (11), the vent plug (10) further comprises a vent plug cap body (2) covering the cylindrical connecting portion (12), an inter-wall airflow channel (121) capable of communicating with the atmosphere is formed between an inner wall of the vent plug cap body (2) and an outer wall of the cylindrical connecting portion (12), a connecting portion hollow cavity (122) is arranged in the cylindrical connecting portion (12), and the inner airflow channel (A), the connecting portion hollow cavity (122) and the inter-wall airflow channel (121) are sequentially communicated.

9. A pressure relief fitting structure characterized by comprising an external connection device and a vent plug (10) according to any one of claims 1 to 8, the external connection device comprising a device case and a case insertion hole (31) formed in the device case and engaged with the cylindrical insertion portion (11), the internal air flow passage (a) comprising an engagement gap defined by a hole peripheral wall of the case insertion hole (31) and the insertion portion through-groove (B), the device case further having a case vent structure (32) formed thereon communicating with the axially lowermost insertion portion through-groove (B).

10. A vehicle characterized by comprising the pressure relief fitting structure according to claim 9.