CN111174009A

CN111174009A - Ventilation pipe joint and crankcase

Info

Publication number: CN111174009A
Application number: CN202010074626.2A
Authority: CN
Inventors: 高维进; 袁绍勇; 章国海; 温拾平
Original assignee: Jiangling Motors Corp Ltd
Current assignee: Jiangling Motors Corp Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-05-19
Anticipated expiration: 2040-01-22
Also published as: CN111174009B

Abstract

The invention discloses a ventilation pipe joint which is used for connecting a male joint of an engine, wherein a boss is arranged at the tail end of the male joint and comprises a joint main body and a clamping sleeve, the clamping sleeve is sleeved on the joint main body, when the male joint is connected with the ventilation pipe joint, the male joint is positioned between the joint main body and the clamping sleeve, a barb is arranged on the inner surface of the clamping sleeve and is used for being clamped and matched with the boss, a sealing ring is arranged at one end, close to the clamping sleeve, of the outer surface of the joint main body, and the sealing ring is used for being in extrusion contact with the male joint. During the assembly, the male joint can be directly inserted into the ventilation pipe joint, and the barb blocks the male joint, can not be pulled out, so that the quick installation is realized, and the assembly is simple. The invention also discloses a crankcase adopting the ventilation pipe joint.

Description

Ventilation pipe joint and crankcase

Technical Field

The invention relates to the technical field of automobile parts, in particular to a ventilating pipe joint and a crankcase.

Background

With the rapid development of the automobile industry and the improvement of the living standard of people, automobiles become one of indispensable transportation tools for people to go out, freight transportation and the like.

For each reciprocating piston internal combustion engine, a certain amount of exhaust gases is leaked through the piston rings, which gases enter the crankcase through the ventilation duct. The engine is connected with the female joint of the ventilation pipe through the male joint, and at present, the male joint and the female joint are fixed mainly through extrusion force between the male joint and the female joint, or after the male joint is inserted into the female joint, relative position relation between the male joint and the female joint is fixed through other fixing pieces.

The fixing effect of the existing ventilation pipe joint and the male joint is poor, a fixing piece needs to be additionally adopted, and the assembling process is complicated.

Disclosure of Invention

One object of the present invention is to provide a vent fitting that has a good securing effect and is easy to install.

The utility model provides a ventilation pipe joint for connect the male joint of engine, the end of male joint is equipped with the boss, including connecting main part and cutting ferrule, the cutting ferrule is established for the cover connect in the main part, work as the male joint with during ventilation pipe joint connects, the male joint is located connect the main part with between the cutting ferrule, the internal surface of cutting ferrule is equipped with the barb, the barb be used for with the cooperation of boss joint, the surface that connects the main part is close to the one end of cutting ferrule is equipped with the sealing washer, the sealing washer be used for with male joint extrusion contact.

The invention has the beneficial effects that: during the assembly, the male joint can be directly inserted into the ventilation pipe joint, and the barb blocks the male joint, can not be pulled out, so that the quick installation is realized, and the assembly is simple.

In addition, the ventilation pipe joint provided by the invention can also have the following additional technical characteristics:

further, the cutting ferrule includes joint portion and fixed part, joint portion is the tubular structure, the barb sets up the inner wall of joint portion, the fixed part is annular platelike structure, the fixed part simultaneously with joint portion with connect main part fixed connection.

Furthermore, the barb is of a plate-shaped structure obliquely arranged in the clamping sleeve, and the edge of the barb is provided with a plurality of open grooves.

Furthermore, one end of the joint main body, which is far away from the clamping sleeve, is provided with a plurality of annular ribs, and the annular ribs are used for contacting with the ventilation pipe.

Further, the surface that connects the main part is equipped with the spacing ring, the spacing ring is used for cooperating the barb is fixed the boss, the surface that connects the main part is close to the spacing ring is equipped with the elastic ring, the elastic ring be used for with the terminal extrusion that produces of male joint.

Furthermore, an annular groove is formed in the joint main body and located at the sealing ring, and the sealing ring is arranged in the annular groove.

Further, the joint portion with be equipped with first mounting groove and second mounting groove on the fixed part respectively.

Furthermore, a positioning block is arranged at the joint of the limiting ring and the fixing part, a positioning groove is formed in the inner wall of the fixing part and faces the positioning block, and the positioning block is located in the positioning groove.

Furthermore, an annular cavity is arranged inside the elastic ring, and the annular cavity is filled with gas or filled with a spring.

Another object of the present invention is to provide a crankcase using the above-described breather coupling.

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 vent pipe joint according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the assembly of the air pipe fitting of FIG. 1 with a male fitting;

FIG. 3 is an enlarged view of a portion of area A of FIG. 2;

FIG. 4 is a schematic structural view of the clamping portion in FIG. 2;

FIG. 5 is a schematic structural view of the fitting body of FIG. 1;

FIG. 6 is a schematic structural view of the fixing portion in FIG. 2;

in the figure: 1-joint main body, 11-sealing ring, 12-annular groove, 13-elastic ring, 14-annular rib, 15-limiting ring, 16-positioning block, 2-cutting sleeve, 21-clamping part, 211-first mounting groove, 22-fixing part, 221-second mounting groove, 23-barb, 231-open groove, 3-male joint and 31-boss.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This 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 be in a particular orientation, constructed or operated in a particular manner, and is not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a first embodiment of the present invention provides a ventilation pipe joint, which is used for connecting a male joint 3 of an engine, a boss 31 is disposed at a terminal of the male joint 3, and includes a joint main body 1 and a ferrule 2, the ferrule 2 is sleeved on the joint main body 1, when the male joint 3 is connected to the ventilation pipe joint, the male joint 3 is located between the joint main body 1 and the ferrule 2, a barb 23 is disposed on an inner surface of the ferrule 2, the barb 23 is used for being in clamping fit with the boss 31, a sealing ring 11 is disposed at one end of an outer surface of the joint main body 1, which is close to the ferrule 21, and the sealing ring 11 is used for being in pressing contact with the male joint 3.

In this embodiment, the ferrule 2 includes a clamping portion 21 and a fixing portion 22, the clamping portion 21 is a tubular structure, the barb 23 is disposed on the inner wall of the clamping portion 21, the fixing portion 22 is an annular plate-shaped structure, and the fixing portion 22 is simultaneously fixedly connected to the clamping portion 21 and the connector body 1.

It should be noted that the boss 31 and the barb 23 are made of plastic materials and can generate certain elastic deformation, and the boss 31 can enter between the clamping portion 21 and the joint main body 1 by extruding the barb 23; when the boss 31 completely enters, the barb 23 can be reset, at this time, the barb 23 can prop against the boss 31, the male connector 3 cannot be pulled out, and the fixed connection is realized.

The invention has the advantages that the male connector 3 can be directly inserted into the ventilation pipe connector during assembly, and the barb 23 clamps the male connector 3 and cannot be pulled out, so that the quick installation is realized, and the assembly is simple.

Referring to fig. 4, specifically, the barb 23 is a plate-shaped structure obliquely disposed in the ferrule 2, and the edge of the barb 23 is provided with a plurality of open slots 231.

It will be appreciated that slots 231 reduce the strength of barbs 23 and further increase the ability of barbs 23 to deform to facilitate passage of boss 31 therethrough.

In addition, one end of the joint body 1, which is far away from the ferrule 2, is provided with 2 annular ribs 14, and the annular ribs 14 are used for contacting with a ventilation pipe.

It should be noted that the vent pipe can be adhered to the surface of the joint main body 1, or the vent pipe can be sleeved on the joint main body 1 and then bound and fixed by using metal wires, and the annular convex edge 14 improves the fixing effect between the vent pipe and the joint main body 1. And because the existence of annular fin 14, after the ventilation pipe is fixed, annular boss 14 can form a sealing washer, has strengthened the gas tightness between ventilation pipe and the joint main part 1.

Referring to fig. 3, specifically, a limiting ring 15 is disposed on an outer surface of the joint main body 1, the limiting ring 15 is used for cooperating with the barb 21 to fix the boss 31, an elastic ring 13 is disposed on the outer surface of the joint main body 1 near the limiting ring 15, and the elastic ring 13 is used for extruding the tail end of the male joint 3.

It should be noted that the elastic ring 13 can have a certain cushioning effect, preventing the male connector 3 from breaking the vent tube connector too hard when inserted;

in addition, under the condition of limited production conditions, the production precision of the barb 23 and the limiting ring 15 cannot be achieved, and the barb 23 and the limiting ring 15 cannot be well clamped on the boss 31, so that after the male connector 3 is assembled, a certain gap exists between the barb 23 and the limiting ring 15 and the male connector 3, and the gap can cause relative displacement between the male connector and the ventilation pipe connector, so that the connection air tightness is affected.

In order to improve the air tightness, the elastic ring 13 can push the male connector 3 in the opposite direction after the male connector 3 is installed, so that the connection between the male connector 3 and the ventilation pipe connector is more stable, and the air tightness is improved.

In the present embodiment, an annular chamber is provided inside the elastic ring 13, and the annular chamber is filled with gas. In other embodiments, the annular cavity may also be filled with springs, such as small springs.

Preferably, when the male connector 3 is assembled, the male connector 3 and the elastic ring 13 are in a compressed state.

In addition, the joint main body 1 is provided with an annular groove 12 at the position of the sealing ring 11, the sealing ring 11 is arranged in the annular groove 12, and the clamping portion 21 and the fixing portion 22 are respectively provided with a first mounting groove 211 and a second mounting groove 221.

It should be noted that the first and

second mounting grooves

211 and 221 can facilitate the fixing of the ventilation duct in the vehicle.

Referring to fig. 5 and 6, further, a positioning block 16 is disposed at a connection position of the limiting ring 15 and the fixing portion 22, a positioning groove 222 is disposed on an inner wall of the fixing portion 22 facing the positioning block 16, and the positioning block 16 is located in the positioning groove 222.

In the present embodiment, the positioning block 16 is 4 block-shaped structures arranged around the joint body 1, the positioning groove 222 is a plurality of grooves uniformly arranged on the inner wall of the fixing portion 22, and the positioning block 16 and the positioning groove 222 can facilitate the early assembly of the vent pipe joint.

A second embodiment of the invention proposes a crankcase comprising at least the ventilation pipe joint of the first embodiment.

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 express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a ventilation pipe joint for connect the male joint of engine, the end of male joint is equipped with the boss, a serial communication port, including connecting main part and cutting ferrule, the cutting ferrule is established for the cover connect in the main part, work as the male joint with during ventilation pipe joint connects, the male joint is located connect the main part with between the cutting ferrule, the internal surface of cutting ferrule is equipped with the barb, the barb be used for with boss joint cooperation, the surface that connects the main part is close to the one end of cutting ferrule is equipped with the sealing washer, the sealing washer be used for with male joint extrusion contact.

2. The air pipe joint according to claim 1, wherein the ferrule comprises a clamping portion and a fixing portion, the clamping portion is of a tubular structure, the barb is disposed on an inner wall of the clamping portion, the fixing portion is of an annular plate-shaped structure, and the fixing portion is fixedly connected with the clamping portion and the joint body.

3. The air pipe fitting of claim 1 wherein said barb is a plate-like structure disposed obliquely within said cuff, said barb having a plurality of open slots formed in an edge thereof.

4. An air pipe coupling according to claim 1, wherein the end of the coupling body remote from the ferrule is provided with a plurality of annular ribs for contact with the air pipe.

5. The air pipe joint according to claim 1, wherein the joint body is provided at an outer surface thereof with a retainer ring for engaging with the barb to fix the boss, and the joint body is provided at an outer surface thereof with an elastic ring adjacent to the retainer ring for pressing against a distal end of the male joint.

6. The air pipe joint of claim 1 wherein an annular groove is provided in said joint body at said seal ring, said seal ring being disposed within said annular groove.

7. The air pipe joint according to claim 2, wherein the clamping portion and the fixing portion are respectively provided with a first mounting groove and a second mounting groove.

8. The ventilation pipe joint according to claim 5, wherein a positioning block is disposed at a joint of the retainer ring and the fixing portion, a positioning groove is disposed on an inner wall of the fixing portion facing the positioning block, and the positioning block is located in the positioning groove.

9. The ventilation pipe coupling according to claim 5, wherein an annular chamber is provided inside the elastic ring, and the annular chamber is filled with gas or filled with a spring.

10. A crankcase comprising a ventilation pipe joint as claimed in any one of claims 1 to 9.