CN211715725U

CN211715725U - Semi-unidirectional type breather plug, gearbox and vehicle

Info

Publication number: CN211715725U
Application number: CN202020425338.2U
Authority: CN
Inventors: 唐亚卓
Original assignee: Jiangsu Yuchuan New Energy Technology Co ltd; Yuchuan Shanghai Transmission Technology Co ltd
Current assignee: Yuchuan Shanghai Transmission Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-10-20
Anticipated expiration: 2030-03-27

Abstract

The utility model provides a half unidirectional type breather plug, gearbox and vehicle relates to vehicle accessory technical field. The utility model discloses a semi-unidirectional formula breather plug includes: a vent plug body; a vent valve, which is provided with an opening at one end, the size of the opening can be changed and/or closed along with the acting force of the internal pressure and/or external liquid of the vent valve on the vent valve, and the other end is connected with the vent plug body; and the vent plug cap is covered at one end of the vent plug body connected with the vent valve, and a gap for communicating the outside of the vent plug with the opening of the vent valve is formed between the vent plug cap and the vent plug body. The gearbox comprises the semi-one-way type breather plug. The vehicle is provided with the gearbox. The utility model discloses a half unidirectional type breather plug, gearbox and vehicle avoids the inside that liquid got into the equipment that needs the ventilation when can realize inside and outside pressure balance.

Description

Semi-unidirectional type breather plug, gearbox and vehicle

Technical Field

The utility model relates to a vehicle accessory technical field specifically is a semi-unidirectional formula breather plug, gearbox and vehicle.

Background

In an automobile transmission, a ventilation system is indispensable, and the ventilation system can play roles of communicating the inside and outside spaces of the transmission, balancing pressure and the like. The ventilation system mainly comprises an internal ventilation structure and an external ventilation plug,

the currently used vent plugs are divided into one-way vent plugs and two-way vent plugs, the one-way vent plugs can only satisfy the condition that the gas in the transmission (speed reducer) flows to the outside, and the two-way vent plugs can not only allow the gas in the transmission (speed reducer) to flow to the outside, but also allow the gas in the transmission (speed reducer) to flow to the inside from the outside.

Gearbox (reduction gear) can produce the heat in real time in normal work, leads to reduction gear (gearbox) inside temperature to rise, and inside lubricating oil and air are heated all can the inflation, and too big in order to prevent internal pressure, inside air need be led to the outside, has just had ventilation system's production. After the ventilation system is generated, external water easily enters the interior of the gearbox (speed reducer) through the ventilation system, and the parts are rusted and the like. In order to block external water from entering the inside of a gearbox (speed reducer), a one-way vent plug is adopted at present. Although the one-way vent plug can prevent external water from entering the inside of the transmission (reducer), external air cannot enter the inside of the transmission (reducer), and therefore pressure equalization cannot be achieved. The bidirectional breather plug can realize pressure balance but cannot prevent external water from entering the interior of a gearbox (speed reducer).

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a semi-unidirectional formula breather plug, gearbox and vehicle for solve current breather valve and can not avoid the inside technical problem that liquid got into the equipment that needs the ventilation when realizing inside and outside pressure balance.

In a first aspect, the present invention provides a semi-unidirectional venting plug, comprising:

a vent plug body;

a vent valve having one end formed with an opening whose size can be changed and/or closed according to the internal pressure of the vent valve and/or the acting force of external liquid on the vent valve, and the other end connected with the vent plug body;

and the vent plug cap is covered at one end of the vent plug body connected with the vent valve, and a gap for communicating the outside of the vent plug with the opening of the vent valve is formed between the vent plug cap and the vent plug body.

Preferably, the vent valve comprises a valve having a cavity formed therein, the cavity extending through the valve in an axial direction of the valve, the aperture being formed by an end of the cavity remote from the vent plug body, the opposite end of the cavity communicating with the vent plug body.

Preferably, the valve is closed towards the central axis of the valve to close the opening when the internal pressure is reduced and/or the exterior is subjected to the weight of water.

Preferably, the diameter of the cross-section of the cavity tapers from an end facing the vent plug body to an end facing away from the vent plug body.

Preferably, the vent valve further comprises a reservoir structure disposed about the periphery of the valve for storing fluid entering the vent plug such that the stored fluid exerts a force that urges the valve toward its central axis to close the opening.

Preferably, the liquid storage structure is a liquid storage tank surrounding the valve for a circle, and when the liquid enters the liquid storage tank, the valve is forced to close towards the central axis by the acting force generated by the pressure of the liquid.

Preferably, the vent valve further comprises an annular wall surrounding the valve outside the valve, the annular wall being formed by an end of the valve outer wall adjacent to the vent plug body extending towards an end facing away from the vent plug body, the annular wall and the valve outer wall forming a reservoir therebetween.

Preferably, the outer wall of the valve is in an arc shape which is concave towards the central axis of the valve.

In a second aspect, the present invention provides a transmission, wherein the transmission comprises the first aspect, the semi-unidirectional vent plug, the vent plug body faces away from one end of the vent valve and the inside of the transmission.

In a second aspect, the present invention provides a vehicle, wherein the vehicle is provided with the transmission of the second aspect.

Has the advantages that: the utility model discloses a half unidirectional formula breather plug, gearbox and vehicle, the trompil size through utilizing the breather valve can be along with the characteristics that breather valve internal pressure changed, makes the breather valve can be the inside and outside two-way switch on of gearbox when the gearbox normally works to the time trompil can suit with gearbox internal pressure, makes the inside and outside pressure of gearbox keep balance for a long time. And simultaneously, the utility model discloses utilize the trompil of breather plug can close the characteristics under internal pressure and outside liquid effect, when the gearbox wades inside temperature dip, utilize the inside negative pressure of gearbox and flow in near the liquid messenger breather valve's trompil to close rapidly to realize that the gearbox is isolated at the gearbox outside with water when wading.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings, and these drawings are all within the protection scope of the present invention.

FIG. 1 is an assembly view of a semi-one-way vent plug of the present invention;

FIG. 2 is an exploded view of a semi-one-way vent plug of the present invention;

fig. 3 is a cross-sectional view of a semi-one-way vent plug of the present invention;

fig. 4 is a three-dimensional structure view of the vent valve of the present invention;

fig. 5 is a cross-sectional view of the vent valve of the present invention;

fig. 6 is a three-dimensional structure view of the vent plug body of the present invention;

parts and numbering in the drawings: the vent plug comprises a vent plug body 10, a second thread 11, a clamping groove 12, a vent valve 20, an opening 21, a valve 22, a cavity 23, an annular wall 24, a reservoir 25, a first thread 26 and a vent plug cap 30.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the various features of the embodiments and examples of the present invention may be combined with each other and are within the scope of the present invention.

Example 1:

as shown in fig. 1 and 2, the present embodiment provides a semi-one-way vent plug including a vent plug body 10, a vent valve 20, and a vent plug cap 30. One end of the vent valve 20 is formed with an opening 21 whose size can be changed and/or closed according to the internal pressure of the vent valve 20 and/or the acting force of external liquid on the vent valve 20, and the other end is connected with the vent plug body 10;

and a vent plug cap 30 covering one end of the vent plug body 10 connected with the vent valve 20, wherein a gap for communicating the outside of the vent plug with the opening 21 of the vent valve 20 is formed between the vent plug cap 30 and the vent plug body 10.

As shown in fig. 3, in which the vent plug body 10 may be a hollow cylindrical shape, the vent valve 20 is installed at one end of the vent plug body 10, and the other end of the vent plug body 10 may be inserted into the inside of the transmission case such that the hollow portion of the vent plug communicates with the inside of the transmission case. The vent plug cap 30 is provided with an opening at one end through which the vent plug cap 30 fits the vent valve 20 in the vent plug cap 30 and forms a connection with the vent plug body 10. Meanwhile, a gap is left between the vent plug cap 30 and the vent plug body 10, so that the air inside and outside the vent plug cap 30 can flow through each other, namely the air outside the vent plug can enter the position of the vent valve 20 and can enter the inside of the gearbox through the vent valve 20 when the vent valve 20 is opened. The gas from the vent valve 20 can also flow out of the vent plug through the gap.

With further reference to fig. 3, during normal operation of the transmission, the opening 21 of the vent valve 20 is in an open state, and since the vent valve 20 is communicated with the interior of the transmission through the vent plug body 10, air can flow out of the opening 21 of the vent valve 20 when the air in the interior of the transmission passes through the vent plug. When the gearbox works normally, the temperature of the gearbox rises gradually, so that the flow rate of air inside the gearbox is not large, and the vent effect can be achieved through the opening 21 on the vent valve 20. If the temperature is increased suddenly, the air pressure in the gearbox is increased, and the opening 21 on the vent valve 20 is increased along with the deformation under the action of the air pressure in the gearbox, so that a good ventilation effect is ensured. That is, the size of the opening 21 of the vent valve 20 can be changed with the pressure inside the transmission case, so that the internal pressure and the external pressure of the transmission case can be balanced for a long time. During normal operation, external air enters the inside of the vent plug cap 30 through the gap between the vent plug cap 30 and the vent plug body 10, and then enters the inside of the transmission through the opening 21 of the vent valve 20.

When the gearbox is in abnormal working condition, for example, the gearbox is waded, on one hand, the internal temperature of the gearbox suddenly drops, and on the other hand, water enters the periphery of the vent valve 20 through the vent plug cap 30. At this time, the internal pressure of the transmission case becomes small to form a negative pressure, and the pressure of water around the vent valve 20 due to gravity also acts on the vent valve 20, and the opening 21 of the vent valve 20 is rapidly closed, so that water cannot enter the inside of the transmission case through the opening 21 of the vent valve 20. Therefore, the ventilation plug of the embodiment realizes the function of bidirectional ventilation when the gearbox normally works and preventing water from entering the gearbox when wading.

As shown in fig. 4 and 5, in order to achieve the above-mentioned function, the vent valve 20 of the present embodiment includes a valve 22 having a cavity 23 formed therein, the cavity 23 penetrating the valve 22 in an axial direction of the valve 22, the opening 21 being formed by an end of the cavity 23 away from the vent plug body 10, and the other end of the cavity 23 opposite to the vent plug body 10 communicating with the vent plug body. The valve 22 can be made of a soft material, such as rubber, which is easily deformed when pressed. The smaller end of the cavity 23 of the valve 22 serves as the opening 21 of the vent valve 20, and the larger end communicates with the interior of the transmission through the vent plug body 10. When the temperature in the gearbox rises and the pressure intensity becomes higher, the gas in the cavity 23 of the valve 22 acts on the inner wall of the cavity 23 to enlarge the open hole 21 formed by the valve 22, so that the gas in the gearbox can flow out, and the inside and the outside of the gearbox are kept balanced. When the gearbox wades, the pressure inside the gearbox is reduced, negative pressure is formed in the cavity 23 of the valve 22, and then the air outside the valve 22 acts on the outer wall of the valve 22 to press the valve 22, so that the opening 21 of the valve 22 is reduced until the valve is closed. At the same time, the water which is taken into account around the valve 22 also presses the valve 22 through the outer wall of the valve 22 under the action of gravity, and the open pores 21 of the valve 22 are rapidly closed under the combined action of the external gas and the water, thereby isolating the water from the outside of the gearbox.

As shown in fig. 5, in the present embodiment, the diameter of the cross section of the cavity 23 is gradually reduced from the end facing the vent plug body 10 to the end facing away from the vent plug body 10. Wherein cross-section refers to a cross-section perpendicular to the axial direction of the vent plug body 10. The cavity 23 of the valve 22 in this embodiment tapers to the same size as the opening 21 towards one end of the opening 21. Therefore, when the gearbox normally works, the valve 22 can keep the air inside and outside the vent valve 20 to circulate, and the opening 21 of the valve 22 can be quickly closed when the gearbox wades.

The vent valve 20 also includes a reservoir structure disposed about the periphery of the valve 22 for storing fluid entering the vent plug such that the stored fluid creates a force that urges the valve 22 toward its central axis to close the opening 21. The embodiment utilizes the liquid storage structure at the periphery of the valve 22 to store the liquid around the valve 22, when the liquid is stored to a certain amount, the pressure of the liquid acts on the outer wall of the valve 22 to press the valve 22 to close towards the central axis thereof until the open holes 21 at the end parts of the valve 22 are completely closed, and the vent valve 20 is in a closed state which can isolate the external water.

As shown in fig. 5, the ventilation valve 20 further comprises an annular wall 24 surrounding the valve 22 at a periphery of the valve 22, the annular wall 24 is formed by extending an end of the outer wall of the valve 22 close to the vent plug body 10 toward an end facing away from the vent plug body 10, and a liquid storage groove 25 is formed between the annular wall 24 and the outer wall of the valve 22.

The present embodiment employs an annular wall 24 and the outer wall of the valve 22 to collectively form a reservoir 25. Wherein one end of the annular wall 24 may be attached directly to the root of the outer wall of the valve 22. The annular wall 24 may extend in the axial direction of the vent plug. Thus, a ring of annular reservoirs 25 is formed between the annular wall 24 and the outer wall of the valve 22. When liquid enters the vent plug cap 30 and flows into the liquid storage tank 25, as the inner ring of the liquid storage tank 25 is the outer wall of the valve 22, the extrusion force of the liquid pressure on the outer wall of the valve 22 is larger as the liquid in the liquid storage tank 25 is more and more, and the valve 22 is rapidly closed to the center under the extrusion of the liquid, so that the open hole 21 of the valve 22 is closed. The height of the reservoir 25 is lower than the height of the opening 21 of the valve 22, so that the valve 22 closes the opening 21 under the pressure of the liquid before the liquid enters the opening 21 of the valve 22.

Preferably, the outer wall of the valve 22 is curved so as to be concave toward the central axis of the valve 22. Because the outer wall of the valve 22 is in an arc shape which is concave towards the central axis direction of the valve 22, the volume of liquid which can be contained in the liquid storage tank 25 between the outer wall of the valve 22 and the annular wall 24 under the condition of the same height is larger, so that the pressure generated by the liquid is larger, the valve 22 can be forced to be close to the center more quickly, the speed of closing the opening hole 21 of the gearbox in wading is higher, and the situation that water enters the gearbox through the vent plug can be avoided more effectively. When the outer wall of the valve 22 is curved so as to be concave toward the central axis of the valve 22, the component force of the liquid on the valve 22 in the radial direction of the valve 22 is larger, and the valve 22 is more easily pressed and deformed to close the opening 21. In addition, the valve 22 adopts an arc shape with the outer wall concave towards the central axis direction of the valve 22, so that the diameter of one end of the valve 22 communicated with the vent plug body 10 is larger, and one end forming the opening 21 is rapidly reduced at the position of the opening 21, thereby ensuring the two-way ventilation in normal work and ensuring that the opening 21 can be rapidly closed in wading.

In addition, the vent valve 20 in this embodiment may also be cylindrical, and the valve 22 is formed by extending from the inner wall of the middle portion of the vent valve 20 to the direction of the vent cap and the center of the vent plug. Thus, a cylindrical reservoir 25 is formed between the outer wall of the valve 22 and the inner wall of the cylinder, and the inner wall of the valve 22 is communicated with the inner wall of the cylinder, so that the inside of the gearbox can be communicated with the outside through the valve 22 when the gearbox normally works.

As shown in fig. 3 and 6, in addition, the vent plug cap 30 and vent plug body 10 may take the form of a snap fit in this embodiment. A ring of annular grooves 12 may be provided on the outer wall of the vent plug body 10 and a ring of annular protrusions may be provided at corresponding locations on the vent plug cap 30. In the process of inserting the vent plug body 10 into the vent plug cap 30 in the direction of the vent plug body 10, the protrusion arranged on the vent plug cap 30 is clamped into the clamping groove 12 of the vent plug body 10 to form clamping connection with the vent plug body 10. By adopting the connection mode, the installation is convenient, the connection is reliable, and the disassembly and the connection of the plug cap and the vent plug body 10 are convenient.

As shown in fig. 3 and 5, a first thread 26 for connection may be provided on the outer wall of the vent valve 20, and a second thread 11 for use in thread engagement with the outer wall of the vent valve 20 may be provided on the outer wall of the vent plug body 10. So that the vent valve 20 can securely attach the vent plug body 10 by threading.

Example 2

The present embodiment provides a transmission case, which includes the semi-one-way vent plug of any previous embodiment, and one end of the vent plug body 10, which faces away from the vent valve 20, is communicated with the inside of the transmission case. Since the transmission case of this embodiment employs the semi-unidirectional vent plug in the foregoing embodiment, the transmission case of this embodiment may obtain any beneficial effect of the semi-unidirectional vent plug described above, and details thereof are not repeated herein

Example 3

The embodiment provides a vehicle, wherein the transmission case in embodiment 2 is arranged in the vehicle, and the vehicle can be a traditional vehicle, a new energy vehicle or a motor farm vehicle, so that the vehicle can obtain any beneficial effect of the transmission case and the semi-unidirectional ventilation plug described above, and the description is omitted here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A semi-unidirectional vent plug, comprising:

a vent plug body;

the vent valve is provided with an opening with the size capable of being changed and/or closed along with the internal pressure of the vent valve and/or the acting force of external liquid on the vent valve, and the other end of the vent valve is connected with the vent plug body;

2. The semi-unidirectional vent plug of claim 1, wherein the vent valve comprises a valve having a cavity formed therein, the cavity extending through the valve in an axial direction of the valve, the opening being formed by an end of the cavity distal from the vent plug body, the opposite end of the cavity communicating with the vent plug body.

3. A semi-unidirectional vent plug as claimed in claim 2, wherein the valve is arranged to close the opening towards the central axis of the valve when the internal pressure is reduced and/or the exterior is subjected to the force of gravity of water.

4. The semi-unidirectional vent plug of claim 2, wherein the diameter of the cross-section of the cavity tapers from an end facing the vent plug body to an end facing away from the vent plug body.

5. A semi-unidirectional vent plug as claimed in claim 2, wherein the vent valve further comprises a reservoir structure disposed about the periphery of the valve for storing liquid entering the vent plug such that the stored liquid exerts a force urging the valve towards its central axis to close the opening.

6. The semi-unidirectional vent plug of claim 5, wherein the fluid reservoir structure is a reservoir surrounding the valve for a circle, and wherein when the fluid enters the reservoir, the pressure of the fluid creates a force that forces the valve toward its central axis.

7. The semi-unidirectional vent plug of claim 6, wherein the vent valve further comprises an annular wall surrounding the valve outside the valve for a circumference, the annular wall being formed by an end of the valve outer wall proximate the vent plug body extending toward an end facing away from the vent plug body, the annular wall and the valve outer wall forming the reservoir therebetween.

8. The semi-unidirectional vent plug of any one of claims 2 to 7, wherein the outer wall of the valve is curved to be concave toward the central axis of the valve.

9. Gearbox, characterized in that, the gearbox includes the semi one-way breather plug of any one of claims 1 to 8, the breather plug body one end that faces away from the breather valve communicates with the gearbox interior.

10. A vehicle, characterized in that it is provided with a gearbox as described in claim 9.