Quick-fit crankcase ventilation pipe

Abstract

The utility model discloses a quick plug type crankcase ventilation pipe, which comprises a ventilation pipe body and a quick plug connector, wherein the ventilation pipe body is made of nylon material and is used for connecting with a crankcase; one end of the quick plug connector is fixedly connected with the ventilation pipe body as a whole; and the other end of the quick plug connector is used for forming a quick plug structure with an engine bulb connector. The quick plug type crankcase ventilation pipe is made of conventional nylon material, thereby avoiding leakage risk. The one end of the DC type quick plug connector and the ventilation pipe body made of nylon material are fixedly connected as a whole by using a normal temperature bamboo joint press fitting process. The other end of the quick plug connector can directly form a quick plug type assembly with the engine connector. Compared with the assembly mode of the mainstream rubber pipe plus clamp in the market, the utility model can reduce assembly time on the basis of solving the leakage problem, thereby making the assembly more efficient, more reliable and more convenient in after-sales service.

Description

Technical Field

[0001] This utility model relates to the technical field of crankcase ventilation pipe structure, and in particular to a quick-connect crankcase ventilation pipe. Background Technology

[0002] With the rapid development of my country's automobile industry, energy consumption and exhaust emissions pose the biggest challenge to the industry, especially with the implementation of my country's National VI emission standard, which imposes higher requirements on vehicle exhaust emissions. Crankcase ventilation pipes can deliver exhaust gases generated in the crankcase into the engine for secondary combustion through the intake system and fresh air, reducing emissions. Existing crankcase ventilation pipes are made of rubber tubing and require clamps for fastening after installation at the engine connector. This extra clamping step not only wastes assembly time but also makes the pure rubber tubing prone to leakage problems as it ages. Utility Model Content

[0003] Based on this, it is necessary to provide a quick-connect crankcase ventilation pipe to address the aforementioned technical problems. The ventilation pipe body is made of conventional nylon material to avoid the risk of leakage. One end of the DC-type quick-connect connector is fixedly connected to the nylon ventilation pipe body using a room-temperature bamboo joint press-fit process. The other end of the quick-connect connector can be directly connected to the engine connector to form a quick-connect assembly. Compared with the current mainstream assembly method of rubber hose plus clamp, this method not only solves the leakage problem but also reduces assembly time.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A quick-connect crankcase ventilation pipe, comprising:

[0006] The ventilation duct is made of nylon and is used to connect to the crankcase. One end of the quick-connect fitting is fixedly connected to the ventilation duct, and the other end of the quick-connect fitting is used to form a quick-connect structure with the engine bulge connector.

[0007] Furthermore, the ventilation duct body is manufactured using an extrusion process.

[0008] Furthermore, the quick-connect connector is made of both plastic and metal materials.

[0009] Furthermore, the quick-connect connector is manufactured using injection molding and assembly processes.

[0010] Furthermore, the quick-connect connector includes a quick-connect housing, a quick-connect end disposed on one side of the quick-connect housing, and a bamboo-joint end fixedly connected to the other side of the quick-connect housing. The ventilation tube is sleeved and fixed on the outer surface of the bamboo-joint end, and a spring and a first sealing ring are installed inside the quick-connect housing.

[0011] Furthermore, a second sealing ring is fitted onto the end of the bamboo joint that is away from the quick-connect housing.

[0012] Furthermore, a connecting tube is inserted inside the quick-connect end, and a bulge head is fixedly connected to one end of the connecting tube inside the quick-connect end. The bulge head has a conical structure.

[0013] Furthermore, the material of the quick-connect housing is PA66 GF30.

[0014] Furthermore, both the first and second sealing rings are made of FKM material.

[0015] Furthermore, the spring is made of metal.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The quick-connect crankcase ventilation pipe provided by this utility model is an automotive component. The ventilation pipe body is made of conventional nylon material to avoid the risk of leakage. One end of the DC-type quick-connect connector is fixedly connected to the nylon ventilation pipe body by a room temperature bamboo joint press-fit process. The other end of the quick-connect connector can be directly connected to the engine connector to form a quick-connect assembly. Compared with the current mainstream assembly method of rubber hose plus clamp, this method not only solves the leakage problem, but also reduces assembly time, thereby making the assembly more efficient, more reliable, and more convenient for after-sales service.

[0018] The quick-connect crankcase ventilation pipe provided by this utility model is made by sleeve and fix the ventilation pipe body on the outer surface of the bamboo joint end, and improve the sealing between the ventilation pipe body and the bamboo joint end through the second sealing ring. After passing the airtightness test, it is marked to complete the production. In this way, the ventilation pipe body and quick-connect connector are combined together to avoid leakage. In use, one end of the ventilation pipe body is connected to the crankcase and the other end is connected to the engine connector. The nylon material of the ventilation pipe body can absorb the relative movement between the engine and the vehicle body, reduce the impact force of the external environment on the ventilation pipe body, and improve the service life. Attached Figure Description

[0019] Figure 1 A three-dimensional schematic diagram of the quick-connect crankcase ventilation pipe provided by this utility model;

[0020] Figure 2 A front cross-sectional view of the quick-connect crankcase ventilation pipe provided by this utility model;

[0021] Figure 3 A schematic diagram of the ventilation pipe body for the quick-connect crankcase ventilation pipe provided by this utility model;

[0022] Figure 4A schematic diagram of the quick-connect connector for the quick-connect crankcase ventilation pipe provided by this utility model;

[0023] Figure 5 A schematic diagram of the connecting pipe for the quick-connect crankcase ventilation pipe provided by this utility model.

[0024] The markings in the diagram are explained as follows:

[0025] 1. Ventilation duct body; 2. Quick-connect connector; 201. Quick-connect housing; 202. Quick-connect end; 203. Bamboo joint end; 204. Spring; 205. First sealing ring; 206. Connecting pipe; 207. Bulged head; 208. Second sealing ring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] As described in the background section, existing crankcase ventilation pipes are made of rubber tubing and require clamps for fastening after being installed in the engine. This extra clamping step not only wastes assembly time but also makes the pure rubber tubing structure prone to leakage problems after aging.

[0028] To solve this technical problem, this utility model provides a quick-connect crankcase ventilation pipe, which is an automotive component. The ventilation pipe body 1 is made of conventional nylon material to avoid the risk of leakage. One end of the DC-type quick-connect connector 2 is fixedly connected to the nylon ventilation pipe body 1 using a room temperature bamboo joint press-fit process. The other end of the quick-connect connector 2 can be directly connected to the engine connector to form a quick-connect assembly. Compared with the current mainstream assembly method of rubber hose plus clamp, this method not only solves the leakage problem but also reduces assembly time, making assembly more efficient, more reliable, and more convenient for after-sales service.

[0029] For details, please refer to Figure 1-5 The quick-connect crankcase ventilation pipe specifically includes:

[0030] Ventilation duct 1, made of conventional nylon material, is used to connect to the crankcase;

[0031] Quick-connect connector 2, one end of which is fixedly connected to the ventilation duct body 1 as a whole, and the other end of which is used to form a quick-connect structure with the engine bulge connector.

[0032] The quick-connect crankcase ventilation pipe provided by this utility model uses conventional nylon material for the ventilation pipe body 1 to avoid leakage risk. One end of the DC quick-connect connector 2 is fixedly connected to the nylon ventilation pipe body 1 by a room temperature bamboo joint press-fit process. The other end of the quick-connect connector 2 can be directly connected to the engine connector to form a quick-connect assembly. Compared with the current mainstream assembly method of rubber hose plus clamp, it can reduce assembly time while solving the leakage problem.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] Example 1

[0037] Please refer to Figure 1-5 A quick-connect crankcase ventilation pipe includes a ventilation pipe body 1, which is made of conventional nylon material and is used to connect to the crankcase.

[0038] Quick-connect connector 2, one end of which is fixedly connected to the ventilation duct body 1 as a whole, and the other end of which is used to form a quick-connect structure with the engine bulge connector.

[0039] The quick-connect crankcase ventilation pipe provided in this embodiment is made of conventional nylon material for the ventilation pipe body 1 to avoid leakage risks. One end of the DC-type quick-connect connector 2 is fixedly connected to the nylon ventilation pipe body 1 by a room temperature bamboo joint press-fit process. The other end of the quick-connect connector 2 can be directly connected to the engine connector to form a quick-connect assembly. Compared with the current mainstream assembly method of rubber hose plus clamp, it can not only solve the leakage problem, but also reduce the assembly time, thereby making the assembly more efficient, more reliable, and more convenient for after-sales service.

[0040] Example 2

[0041] The quick-connect crankcase ventilation pipe provided in Embodiment 1 is further optimized. Specifically, the ventilation pipe body 1 is made by extrusion, and the quick-connect connector 2 is made by injection molding and assembly. The quality produced by extrusion is stable and reliable, and continuous production can be achieved. There is no need to stop the machine frequently during the production process, and it can run stably for a long time, which greatly improves the production efficiency. Compared with other molding processes, extrusion molding has a faster production speed, which can meet the needs of large-scale production. Furthermore, by precisely controlling the extrusion process parameters, such as temperature, pressure, screw speed, etc., and by using high-precision die head and cooling and shaping device, the dimensional accuracy of the produced products can be relatively stable with small deviations. At the same time, the assembly process facilitates the assembly of the quick-connect connector 2.

[0042] The quick-connector 2 is made of conventional plastic and metal materials. Compared with the conventional plastic material, the plastic quick-connector 2 has a significant advantage in terms of lightness. The metal material is made of aluminum alloy, which has the significant characteristics of low overall density and light weight.

[0043] Example 3

[0044] The quick-connect crankcase ventilation pipe provided in Embodiment 1 or 2 is further optimized, such as... Figure 2-5 As shown, the quick-connect connector 2 includes a quick-connect housing 201, a quick-connect end 202 disposed on one side of the quick-connect housing 201, and a bamboo joint end 203 fixedly connected to the other side of the quick-connect housing 201. The ventilation tube 1 is fitted and fixed on the outer surface of the bamboo joint end 203. A spring 204 and a first sealing ring 205 are installed inside the quick-connect housing 201. The ventilation tube 1 and the bamboo joint end 203 are fixed by a room temperature bamboo joint connector press-fitting process. A second sealing ring 208 is fitted on the end of the bamboo joint end 203 away from the quick-connect housing 201. The second sealing ring 208 improves the sealing between the ventilation tube 1 and the bamboo joint end 203 and prevents leakage.

[0045] A connecting tube 206 is inserted into the inside of the quick-connect end 202. One end of the connecting tube 206 inside the quick-connect end 202 is fixedly connected to a bulge head 207, which has a conical structure. In use, one end of the connecting tube 206 is connected to the engine, and the bulge head 207 at the other end of the connecting tube 206 can be inserted into the inside of the quick-connect end 202. Then, the restoring force of the spring 204 can make the first sealing ring 205 fit against the inner wall of the bulge head 207 and the quick-connect end 202, forming a stable communication structure. The spring 204 and the first sealing ring 205 inside the ventilation pipe 1 are existing structures.

[0046] Example 4

[0047] The quick-connect crankcase ventilation pipe provided in the above embodiments is further optimized. The material of the quick-connect housing 201 is PA66 GF30. PA66 GF30 is a high-performance engineering material composed of polyamide 66 (PA66) and 30% glass fiber (GF). By combining the impact resistance, heat resistance and chemical corrosion resistance of PA66 with the high strength and high rigidity of glass fiber, the life of the quick-connect connector 2 is improved.

[0048] Both the first sealing ring 205 and the second sealing ring 208 are made of FKM material. FKM is an abbreviation for fluororubber, which is a special synthetic elastomer. Fluororubber can maintain stable physical properties in high-temperature environments and does not melt or decompose.

[0049] Spring 204 is made of metal. Springs made of stainless steel have a beautiful surface finish, good formability, high plasticity, uniform wire diameter, good gloss, corrosion resistance, acid and alkali resistance, and high temperature resistance.

[0050] The usage process of the quick-connect crankcase ventilation pipe provided by this utility model is as follows:

[0051] By fitting and fixing the ventilation duct 1 onto the outer surface of the bamboo joint end 203, and improving the sealing between the ventilation duct 1 and the bamboo joint end 203 through the second sealing ring 208, the production is completed after passing the airtightness test and being marked. This combines the ventilation duct 1 and the quick-connect connector 2 together to prevent leakage. In use, one end of the ventilation duct 1 is connected to the crankcase, and the other end is connected to the engine connector. The nylon ventilation duct 1 can absorb the relative movement between the engine and the vehicle body, reduce the impact force of external forces on the ventilation duct 1, and improve its service life.

[0052] By using this quick-connect crankcase ventilation pipe under a working pressure of 50 kPa and a working temperature of -40°C to 120°C, the leakage rate was measured to be ≤10 ml / min.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A quick-connect crankcase ventilation pipe, characterized in that, It includes: Ventilation duct (1), the ventilation duct (1) is made of nylon material, the ventilation duct (1) is used to connect to the crankcase; Quick-connect connector (2), one end of which is fixedly connected to the ventilation pipe body (1) as a whole, and the other end of which is used to form a quick-connect structure with the engine bulge connector.

2. The quick-connect crankcase ventilation pipe according to claim 1, characterized in that, The ventilation duct (1) is manufactured using an extrusion process.

3. The quick-connect crankcase ventilation pipe according to claim 1, characterized in that, The quick-connect connector (2) is made of plastic and metal.

4. The quick-connect crankcase ventilation pipe according to claim 3, characterized in that, The quick-connect connector (2) is manufactured using injection molding and assembly processes.

5. The quick-connect crankcase ventilation pipe according to claim 4, characterized in that, The quick-connect connector (2) includes a quick-connect housing (201), a quick-connect end (202) disposed on one side of the quick-connect housing (201), and a bamboo joint end (203) fixedly connected to the other side of the quick-connect housing (201). The ventilation tube (1) is sleeved and fixed on the outer surface of the bamboo joint end (203). A spring (204) and a first sealing ring (205) are installed inside the quick-connect housing (201).

6. The quick-connect crankcase ventilation pipe according to claim 5, characterized in that, The end of the bamboo joint (203) away from the quick-connect housing (201) is fitted with a second sealing ring (208).

7. The quick-connect crankcase ventilation pipe according to claim 6, characterized in that, A connecting tube (206) is inserted inside the quick-connect end (202). A bulge head (207) is fixedly connected to one end of the connecting tube (206) inside the quick-connect end (202). The bulge head (207) has a conical structure.

8. The quick-connect crankcase ventilation pipe according to claim 5, characterized in that, The quick-connect housing (201) is made of PA66 GF30.

9. The quick-connect crankcase ventilation pipe according to claim 8, characterized in that, Both the first sealing ring (205) and the second sealing ring (208) are made of FKM material.

10. The quick-connect crankcase ventilation pipe according to claim 9, characterized in that, The spring (204) is made of metal.

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