CN212744983U - Breather pipe and speed changer - Google Patents

Abstract

The utility model discloses a breather pipe and a speed changer, wherein, the breather pipe comprises a breather pipe body, a connecting piece and a breather cap, the connecting piece is of a hollow cylindrical structure, a circle of sealing ring is arranged in the middle section of the outer side surface of the connecting piece, the first end of the connecting piece is inserted into one end of the breather pipe body, the sealing ring covers one end of the breather pipe body, and the connecting piece is in interference fit with the breather pipe body; the ventilation cap is sleeved at one end of the ventilation pipe body, the ventilation cap is in interference fit with the ventilation pipe body, and the second end of the connecting piece is located on the inner side of the ventilation cap. The utility model discloses can solve current breather pipe and increase the problem that wading ability leads to with high costs through increasing length.

Description

Breather pipe and speed changer

Technical Field

The utility model relates to a derailleur production technical field especially relates to a breather pipe and derailleur.

Background

The speed changer breather pipe is generally installed at the top of a speed changer shell and has the functions of balancing the air pressure inside and outside the speed changer, improving the horizontal position of the speed changer and enhancing the wading capacity. The length and the structural size of the vent pipe influence the wading capacity of the transmission, if the vent pipe is poor in water inflow prevention capacity, in the driving process of an automobile, external dust and water vapor enter the interior of the transmission through the vent pipe of the transmission, so that lubricating oil pollution is caused, the water content exceeds the standard, further, the polishing of a clutch steel sheet of the transmission or the corrosion of parts is caused, the durability of the clutch and the driving performance of the whole automobile are influenced, and the problems such as shaking during the starting and creeping of the whole automobile are solved.

Conventional breather pipe increases its ability of wading through increase breather pipe length and pull up derailleur horizontal position, but this kind of structure commonality is not strong, because breather pipe body structure is complicated, because of the difference that the whole car of different motorcycle types was arranged, the design space of reserving for the breather pipe is different to need design different breather pipes, so this kind of breather pipe is sub-part many usually, length is long, need increase extra pipe support location, leads to part cost higher relatively.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a breather pipe to solve current breather pipe and increase through increasing length and wade the ability and lead to problem with high costs.

A breather pipe comprises a breather pipe body, a connecting piece and a breather cap, wherein the connecting piece is of a hollow cylindrical structure, a circle of sealing ring is arranged at the middle section of the outer side surface of the connecting piece, the first end of the connecting piece is inserted into one end of the breather pipe body, the sealing ring covers one end of the breather pipe body, and the connecting piece is in interference fit with the breather pipe body; the ventilation cap is sleeved at one end of the ventilation pipe body, the ventilation cap is in interference fit with the ventilation pipe body, and the second end of the connecting piece is located on the inner side of the ventilation cap.

According to the breather pipe provided by the utility model, the connecting piece is inserted at one end of the breather pipe body, and the breather cap is sleeved, so that the capability of preventing water from splashing is effectively improved, and even if a small amount of water enters the breather cap, the sealing ring of the connecting piece covers the port of the breather pipe body, so that the water is not easy to flow into the breather pipe body; meanwhile, the connecting piece and the ventilation cap also ensure the ventilation capability, and air can enter from the gap between the ventilation cap and the ventilation pipe body and enter the ventilation pipe through the hollow structure of the connecting piece; the ventilation cap and the connecting piece are simple in structure and easy to produce, so that the problem that the cost is high due to the fact that the existing ventilation pipe is increased in wading capacity by increasing the length is effectively solved.

Additionally, according to the utility model provides a breather pipe can also have following additional technical characterstic:

further, the ventilation cap adopts a double-layer structure, the ventilation cap comprises an outer brim and an inner brim, the outer brim is in interference fit with the ventilation pipe body, and the inner brim is in clearance fit with the connecting piece.

Furthermore, a plurality of convex columns are arranged at the bottom of the inner brim, when the ventilation cap is sleeved at one end of the ventilation pipe body, the convex columns abut against the sealing ring, and an area for air circulation is formed between the inner brim and the sealing ring.

Furthermore, a plurality of vent slots are formed in the top of the second end of the connecting piece.

Furthermore, the connecting piece is made of elastic rubber.

Furthermore, a circle of sealing convex part is arranged on the outer side face of the connecting piece, the sealing convex part is located on the inner side of the inner brim, and a plurality of ventilation notches are formed in the sealing convex part corresponding to the ventilation groove holes.

Furthermore, the outer side surface of the connecting piece is also provided with a plurality of layers of elastic convex parts, and the elastic convex parts are positioned inside the breather pipe body.

The utility model also provides a derailleur, the derailleur includes foretell breather pipe.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a breather pipe according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view A-A of the vent tube;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

FIG. 4 is a schematic structural view of a connector;

fig. 5 is a schematic view of the vent cap.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 5, an embodiment of the present invention provides a vent pipe, including a vent pipe body 10, a connecting member 30 and a vent cap 20, wherein the connecting member 30 is a hollow cylindrical structure, a ring of sealing ring 31 is disposed at a middle section of an outer side surface of the connecting member 30, a first end of the connecting member 30 is inserted into one end of the vent pipe body 10, the sealing ring 31 covers one end of the vent pipe body 10, and the connecting member 30 is in interference fit with the vent pipe body 10; the ventilation cap 20 is sleeved on one end of the ventilation tube body 10, the ventilation cap 20 is in interference fit with the ventilation tube body 10, and the second end of the connecting piece 30 is located on the inner side of the ventilation cap 20.

Specifically, the ventilation cap 20 adopts a double-layer structure, the ventilation cap 20 comprises an outer brim 21 on the outer side and an inner brim 22 on the inner side, the outer brim 21 is in interference fit with the ventilation pipe body 10, and the inner brim 22 is in clearance fit with the connecting piece 30. The ventilation cap 20 adopts a double-layer structure, the outer brim 21 on the outer side is in interference fit with the ventilation tube body 10, so that water is prevented from entering the ventilation hole body 10, the inner brim 22 is further arranged on the inner side, and even if a small amount of water enters from the outer brim 21, the water can flow out along the outer brim 21, so that the wading capacity of the transmission is improved.

Specifically, a plurality of convex columns 23 are arranged at the bottom of the inner brim 22, when the vent cap 20 is sleeved at one end of the vent pipe body 10, the convex columns 23 abut against the sealing ring 31, and an area for air circulation is formed between the inner brim 22 and the sealing ring 31. The number of the convex columns 23 can be determined according to actual conditions, the number of the convex columns 23 in the embodiment is two, and the two convex columns 23 are symmetrically arranged at the bottom of the inner visor 22. When the ventilation cap 20 is installed, the convex pillar 23 can abut against the sealing ring 31, so that the bottom of the inner visor 22 is prevented from being directly pressed on the sealing ring 31, and air cannot circulate to block the ventilation pipe.

Specifically, the top of the second end of the connecting member 30 is provided with a plurality of vent slots 32, and when the second end of the connecting member 30 abuts against the top of the inner side of the vent cap 20, the vent slots 32 allow air to circulate through the vent slots 32, so as to prevent the vent pipe from being blocked.

Specifically, the connecting piece 30 is made of elastic rubber, a circle of sealing convex parts 33 are arranged on the outer side face of the connecting piece 30, the sealing convex parts 33 are located on the inner side of the inner visor 22, and a plurality of ventilation notches 331 are arranged on the sealing convex parts 33 corresponding to the ventilation slot holes 32. The sealing convex part 33 can block the gap between the inner visor 22 and the connecting piece 30, so as to prevent water from entering the connecting piece 30 from the inner visor 22 and causing the water to enter the breather pipe body 10; the sealing protrusion 33 is provided with a vent notch 331 corresponding to the vent slot hole 32 to allow air to flow and prevent the vent pipe from being blocked.

Specifically, the outer side surface of the connector 30 is further provided with a plurality of layers of elastic protrusions 34, and the elastic protrusions 34 are located inside the snorkel body 10. The elastic protrusion 34 in this embodiment is formed by two layers, and when the first end of the connector 30 is inserted into one side of the snorkel body 10, the elastic protrusion 34 can increase the sealing performance between the connector 30 and the snorkel body 0.

When the water-splashing-proof breather pipe works, the connector is inserted at one end of the breather pipe body 10, and the breather cap 20 is sleeved, so that the water-splashing-proof capability of the breather cap 20 is effectively improved, and even if a small amount of water enters the breather cap 20, the sealing ring 31 of the connector 30 covers the port of the breather pipe body 10, so that the water is not easy to flow into the breather pipe body 0; meanwhile, the connecting piece 30 and the ventilation cap 20 also ensure the ventilation capability, and air can enter from the gap between the ventilation cap 20 and the ventilation pipe body 10 and enter the ventilation pipe through the hollow structure of the connecting piece 30; the ventilation cap 20 and the connecting piece 30 are simple in structure and easy to produce, so that the problem that the existing ventilation pipe is high in cost due to the fact that the wading capacity is increased by increasing the length is effectively solved.

Another embodiment of the present invention further provides a transmission, which comprises at least the vent pipe in the above embodiments.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (8)

1. A breather pipe is characterized by comprising a breather pipe body, a connecting piece and a breather cap, wherein the connecting piece is of a hollow cylindrical structure, a circle of sealing ring is arranged at the middle section of the outer side surface of the connecting piece, the first end of the connecting piece is inserted into one end of the breather pipe body, the sealing ring covers one end of the breather pipe body, and the connecting piece is in interference fit with the breather pipe body; the ventilation cap is sleeved at one end of the ventilation pipe body, the ventilation cap is in interference fit with the ventilation pipe body, and the second end of the connecting piece is located on the inner side of the ventilation cap.

2. The snorkel as recited in claim 1, wherein the venting cap is of a double-layered construction, the venting cap comprising an outer visor and an inner visor, the outer visor being in interference fit with the snorkel body, the inner visor being in clearance fit with the connector.

3. The snorkel as claimed in claim 2, wherein the inner visor has a plurality of protruding posts at a bottom thereof, the protruding posts abutting against the sealing ring when the snorkel is fitted over one end of the snorkel body, and an area for air circulation is defined between the inner visor and the sealing ring.

4. The snorkel as recited in claim 2, wherein the connector has a plurality of vent slots at a top portion of the second end.

5. The snorkel as recited in claim 4, wherein the connector is an elastomeric connector.

6. The snorkel as recited in claim 5, wherein the outer side of the connector is provided with a ring of sealing protrusions located on the inner side of the inner visor, the sealing protrusions being provided with a plurality of ventilation notches corresponding to the ventilation slots.

7. The snorkel as recited in claim 5, wherein the outer side of the connector further comprises a plurality of layers of resilient protrusions, the resilient protrusions being located within the snorkel body.

8. A transmission, characterized in that it comprises a breather pipe according to any one of claims 1 to 7.

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