Joint connection structure, pipe connection structure, crankcase ventilation pipe and vehicle

Abstract

The present application provides a joint connection structure, a pipe connection structure, a crankcase ventilation duct and a vehicle. The joint connection structure is used to connect to a first joint, and includes a second joint and a locking member. The second joint is a tubular structure, and the second joint is provided with a mounting port and an insertion port, and a first snap portion is provided on the inner surface. The locking member includes a body, a first locking portion and a limiting portion provided on the side of the body, and the limiting portion and the first locking portion are located on the same side of the body. The locking member can be installed on the second joint through the mounting port. In the first installation state, the first joint enters the second joint through the insertion port, and the locking member enters the second joint. The first locking portion cooperates with the first snap portion to fix the locking member to the second joint, and the limiting portion prevents the first joint from withdrawing from the second joint. The pipe connection structure includes a joint connection structure and a first joint. The crankcase ventilation duct includes a pipe connection structure. The vehicle includes a crankcase ventilation duct. The first joint and the second joint can be firmly connected.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline connection, and in particular to a joint connection structure, a pipeline connection structure, a crankcase ventilation pipeline and a vehicle. Background Art

[0002] The vehicle's crankcase ventilation pipe is connected to the crankcase, and gases entering the crankcase can be discharged through the crankcase ventilation pipe. The crankcase ventilation pipe has a female connector at its end, and a male connector connected to the crankcase. Connecting the male and female connectors connects the crankcase ventilation pipe to the crankcase.

[0003] In the related art, the male connector and the female connector are detachably connected, but the connection is not firm, and the male connector and the female connector may be disconnected, thereby causing the crankcase ventilation pipe to be disconnected from the crankcase. Summary of the Invention

[0004] The present application provides a joint connection structure, a pipeline connection structure, a crankcase ventilation pipeline and a vehicle.

[0005] According to a first aspect of an embodiment of the present application, a joint connection structure is provided, comprising:

[0006] The second connector is a tubular structure, the second connector is provided with a mounting port and an insertion port, and the inner surface thereof is provided with a first buckle portion;

[0007] The locking member comprises a body, a first locking portion and a limiting portion provided on a side of the body, wherein the limiting portion and the first locking portion are located on the same side of the body;

[0008] The locking member can be installed on the second connector through the installation port. In the first installation state, the first connector enters the second connector through the plug port, and the locking member enters the second connector. The first locking portion cooperates with the first snap-on portion to fix the locking member to the second connector, and the limiting portion prevents the first connector from exiting the second connector.

[0009] Optionally, the inner surface of the second connector is further provided with a second locking portion, the second locking portion being closer to the plug port than the first locking portion, the locking member further comprising a first cantilever extending from a side portion of the body and a second locking portion provided at a free end of the first cantilever, the second locking portion and the first locking portion being located on the same side of the body;

[0010] In the second installation state, the locking member partially enters the second joint, and the second locking portion cooperates with the second snap-on portion to fix the locking member to the second joint; after the first joint enters the second joint, the second locking portion separates from the second snap-on portion.

[0011] Optionally, the inner surface of the second joint is provided with more than two second snap-fitting parts, the locking member is provided with more than two second locking parts, the more than two second snap-fitting parts correspond one-to-one with the more than two second snap-fitting parts, and the more than two second snap-fitting parts are distributed on opposite sides of the inner surface of the second joint.

[0012] Optionally, the first cantilever is extended to form a pushing portion, and the first joint enters the second joint. The first joint pushes the pushing portion, driving the first cantilever to move along the direction in which the first joint enters the second joint, so that the second locking portion is separated from the first snap portion.

[0013] Optionally, the second snap-fitting portion includes a first protrusion and a second protrusion arranged opposite to each other, and in the direction in which the locking member enters the second joint, the first protrusion and the second protrusion are arranged at intervals, and when the second snap-fitting portion is engaged with the locking portion, the second locking portion is located between the first protrusion and the second protrusion.

[0014] Optionally, the first protrusion is closer to the installation port than the second protrusion, and the first protrusion is provided with a first guide surface, which extends obliquely in the direction away from the inner surface side where the first protrusion is located along the direction in which the locking member enters the second joint, and the first guide surface is used to reduce the resistance of the first protrusion to the second locking part during the process of the second locking part entering the second joint.

[0015] Optionally, the inner surface of the second joint is provided with more than two first snap-fit ​​parts, and the locking member is provided with more than two first locking parts, the more than two first snap-fit ​​parts correspond one-to-one to the more than two first snap-fit ​​parts, and the more than two first snap-fit ​​parts are distributed on opposite sides of the inner surface of the second joint.

[0016] Optionally, a stop portion is provided in the second joint, and when the first clip portion cooperates with the first locking portion, a side of the main body where the first locking portion is provided abuts against the stop portion.

[0017] Optionally, the locking member further includes a second cantilever extending from a side portion of the body, the first locking portion is provided at a free end of the second cantilever, and the first locking portion is provided with a second guide surface, the second guide surface being used to reduce resistance of the first locking portion to the first locking portion during the process of the first locking portion entering the second joint; and / or,

[0018] The first locking portion is provided with a third guide surface, and the third guide surface is used to reduce the resistance of the first locking portion to the first locking portion when the first locking portion enters the second joint.

[0019] Optionally, in the first installation state, the locking member is completely inserted into the second joint; and / or,

[0020] The second connector is provided with an opening, wherein the opening exposes the first buckle portion. In the first installation state, the locking member blocks the opening.

[0021] According to a second aspect of an embodiment of the present application, a pipeline connection structure is provided, comprising the above-mentioned joint connection structure and a first joint, wherein the first joint can be connected to the joint connection structure.

[0022] Optionally, a limiting protrusion is provided on the outer surface of the first connector. In the first installation state, the first connector enters the second connector through the plug interface, and the limiting protrusion abuts against a side of the limiting portion facing away from the plug interface.

[0023] According to a third aspect of an embodiment of the present application, a crankcase ventilation pipeline is provided, comprising the above-mentioned pipeline connection structure.

[0024] According to a fourth aspect of an embodiment of the present application, a vehicle is provided, comprising the above-mentioned crankcase ventilation line.

[0025] The joint connection structure, pipeline connection structure, crankcase ventilation pipeline and vehicle provided by the embodiments of the present application, when the locking member is in the first installation state, the first joint enters the second joint, the locking member is installed on the second joint, and the first locking portion of the locking member cooperates with the first locking portion of the second joint, so that the locking member and the second joint are fixed. The limiting portion of the locking member prevents the first joint from exiting the second joint. The cooperation between the first locking portion and the first snap portion makes it difficult to easily remove the locking member from the second joint, and when the locking member is fixedly connected to the second joint, the first joint and the second joint cannot be separated. It can be seen that the pipeline connection structure and the joint connection structure provided by the embodiments of the present application can make the first joint and the second joint connected more firmly, and the two will not be easily separated.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0028] Figure 1A schematic diagram of the three-dimensional structure of a pipeline connection structure in an assembled state provided by an embodiment of the present application;

[0029] Figure 2 for Figure 1 A three-dimensional exploded schematic diagram of the pipeline connection structure shown;

[0030] Figure 3 for Figure 1 A three-dimensional schematic diagram of the second joint of the pipeline connection structure shown;

[0031] Figure 4 for Figure 1 A three-dimensional schematic diagram of a locking member of the pipeline connection structure shown at one angle;

[0032] Figure 5 for Figure 1 A three-dimensional schematic diagram of the locking member of the pipeline connection structure shown in another angle;

[0033] Figure 6 for Figure 1 A partial cross-sectional view of the pipe connection structure shown from one perspective;

[0034] Figure 7 for Figure 1 A partial cross-sectional view of the pipe connection structure shown from another perspective;

[0035] Figure 8 for Figure 1 A cross-sectional view of the pipe connection structure shown;

[0036] Figure 9 for Figure 1 A cross-sectional view of the pipe connection structure shown;

[0037] Figure 10 for Figure 1 A three-dimensional schematic diagram of the joint connection structure of the pipeline connection structure shown in FIG.

[0038] Figure 11 for Figure 10 A cross-sectional view of the joint connection structure shown;

[0039] Figure 12 for Figure 10 A top view of the joint connection structure shown;

[0040] Figure 13 for Figure 12 A cross-sectional view of the joint connection structure shown along line AA;

[0041] Figure 14 for Figure 12 The cross-sectional view of the joint connection structure is shown along line BB. DETAILED DESCRIPTION

[0042] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0043] The terms used in this application are for the purpose of describing particular embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0044] It should be understood that the words “first”, “second” and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as “a” or “an” do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise indicated, words such as “front”, “rear”, “lower” and / or “upper” are for ease of description only and are not limited to one position or one spatial orientation. Words such as “include” or “comprising” mean that the elements or objects appearing before “include” or “comprising” cover the elements or objects listed after “include” or “comprising” and their equivalents, and do not exclude other elements or objects.

[0045] The connection structure and pipeline connection structure of the embodiment of the present application are described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementation methods can complement or be combined with each other.

[0046] in, Figure 1 A schematic diagram of the three-dimensional structure of a pipeline connection structure in an assembled state provided by an embodiment of the present application; Figure 2 for Figure 1 A three-dimensional exploded schematic diagram of the pipeline connection structure shown; Figure 3 for Figure 1 A three-dimensional schematic diagram of the second joint of the pipeline connection structure shown; Figure 4 for Figure 1 A three-dimensional schematic diagram of a locking member of the pipeline connection structure shown at one angle; Figure 5 for Figure 1 A three-dimensional schematic diagram of the locking member of the pipeline connection structure shown in another angle; Figure 6 for Figure 1 A partial cross-sectional view of the pipe connection structure shown from one perspective; Figure 7 for Figure 1 A partial cross-sectional view of the pipe connection structure shown from another perspective; Figure 8 for Figure 1 A cross-sectional view of the pipe connection structure shown; Figure 9 for Figure 1 A cross-sectional view of the pipe connection structure shown; Figure 10 for Figure 1 A three-dimensional schematic diagram of the joint connection structure of the pipeline connection structure shown in FIG. Figure 11 for Figure 10 A cross-sectional view of the joint connection structure shown; Figure 12 for Figure 10 A top view of the joint connection structure shown; Figure 13 for Figure 12 A cross-sectional view of the joint connection structure shown along line AA; Figure 14 for Figure 12 The cross-sectional view of the joint connection structure is shown along line BB.

[0047] An embodiment of the present application provides a vehicle comprising a crankcase ventilation duct. The crankcase ventilation duct is in communication with the crankcase and is used to discharge gases from the crankcase. When the vehicle's engine is operating, a portion of the high-pressure combustible mixture and burned gas in the combustion chamber enters the crankcase. When the pressure in the crankcase increases, the gases that have entered the crankcase can be discharged through the crankcase ventilation duct. The crankcase ventilation duct includes a ventilation duct and a duct connection structure, and the ventilation duct is connected to the crankcase via the duct connection structure.

[0048] See also Figure 1 and Figure 2 In the embodiment of the present application, the pipeline connection structure 200 includes a first joint 30 and a joint connection structure 100 , and the joint connection structure 100 is used to connect with the first joint 30 .

[0049] The joint connection structure 100 includes a second joint 10 and a locking member 20. The first joint 30 is a tubular structure, and a limiting protrusion 32 is provided on the surface. The limiting protrusion 32 can be an annular protrusion structure.

[0050] See also Figure 3 The second connector 10 is tubular in structure. The second connector 10 is provided with an installation opening 111 and an insertion opening 116. A first latching portion 112 is provided on the inner surface of the second connector 10. The installation opening 111 is used to install the locking member 20, which can be installed in the second connector 10 through the installation opening 111. The insertion opening 116 is used to install the first connector 30, which can be inserted into the second connector 10 through the insertion opening 116.

[0051] The first latch portion 112 may be provided with a third guide surface 1121. The third guide surface 1121 is used to reduce the resistance exerted by the first latch portion 112 on the second latch portion 25 during the process of the first latch portion 112 entering the second connector 10. The third guide surface 1121 may be an arcuate surface or an inclined surface. Furthermore, as the locking member 20 enters the second connector 10, the third guide surface 1121 may extend obliquely away from the side of the inner surface of the second connector 10 where the first latch portion 112 is located.

[0052] The inner surface of the second connector 10 may further be provided with two or more first snap-fit ​​portions 112, with at least two first snap-fit ​​portions 112 distributed on opposite sides of the inner surface of the second connector 10. The term "two or more" includes "two." In the illustrated embodiment, there are two first snap-fit ​​portions 112. In other embodiments, the number of first snap-fit ​​portions 112 may be three or more. When the number of first snap-fit ​​portions 112 is an even number, the first snap-fit ​​portions 112 may be evenly distributed on opposite sides of the inner surface of the second connector 10.

[0053] The inner surface of the second connector 10 may also be provided with a second latching portion 113, which is closer to the insertion port 116 than the first latching portion 112. The second latching portion 113 may include a first protrusion 1131 and a second protrusion 1132. The first protrusion 1131 and the second protrusion 1132 are arranged opposite each other. The first protrusion 1131 is closer to the installation port 111 than the second protrusion 1132.

[0054] The first protrusion 1131 may be provided with a first guide surface 1133, which is used to reduce the resistance of the first protrusion 1131 to the second locking portion 25 during the process of the second locking portion 25 entering the second connector 10. The first guide surface 1133 may be an inclined surface or a slanted surface, extending obliquely in a direction away from the inner surface of the second connector 10 where the first protrusion 1131 is located, as the locking member 20 enters the second connector 10.

[0055] The inner surface of the second connector 10 may be provided with two or more second snap-fitting portions 113, with at least two second snap-fitting portions 113 distributed on opposite sides of the inner surface of the second connector 10. The phrase "two or more" includes "two." In the illustrated embodiment, there are two second snap-fitting portions 113. In other embodiments, the number of second snap-fitting portions 113 may be three or more. When the number of second snap-fitting portions 113 is an even number, the second snap-fitting portions 113 may be evenly distributed on opposite sides of the inner surface of the second connector 10.

[0056] The second connector 10 may be provided with a stopper 114. The stopper 114 may be provided at the installation opening 111. The stopper 114 may partially block the installation opening 111. The portion of the installation opening 111 not blocked by the stopper 114 may allow the locking member 20 to enter.

[0057] See also Figure 4 and Figure 5 The locking member 20 includes a body 21. The body 21 may be substantially U-shaped. The locking member 20 further includes a first locking portion 22 and a limiting portion 26 disposed on a side of the body 21. The limiting portion 26 and the first locking portion 22 are located on the same side of the body 21.

[0058] The locking member 20 has a first installed state. Figures 6 to 9 When the locking member 20 is in the first installation state, the first connector 30 enters the second connector 10 through the insertion opening 116. The locking member 20 enters the second connector 10 through the installation opening 111, and the first locking portion 22 cooperates with the first latching portion 112 to secure the locking member 20 to the second connector 10. The limiting portion 26 abuts against the side of the limiting protrusion 32 facing away from the insertion opening 116, thereby preventing the first connector 30 from exiting the second connector 10.

[0059] Because the first latch portion 112 is located inside the second connector 10 and the first locking portion 22 enters the second connector 10, the first latch portion 112 cannot be easily separated from the first locking portion 22 when the first latch portion 112 and the first locking portion 22 are engaged, and thus the locking member 20 cannot be easily removed from the second connector 10. When the locking member 20 is fixedly connected to the second connector 10, the first connector 30 cannot be separated from the second connector 10. It can be seen that the pipe connection structure and the connector connection structure provided in the embodiments of the present application can ensure a relatively secure connection between the first connector 30 and the second connector 10, and the two will not be easily separated.

[0060] In one embodiment, when the locking member 20 is in the first installation state, the locking member 20 can be fully inserted into the second connector 10. The locking member 20 being fully inserted into the second connector 10 means that the top surface of the locking member 20 and the top surface of the second connector 10 are located on the same circumference, or the top surface of the locking member 20 is lower than the circumference of the top surface of the second connector 10.

[0061] Since the locking member 20 is fully inserted into the second connector 10 in the first installation state, it is difficult to operate the locking member 20, and it is difficult to separate the locking member 20 from the second connector 10. When the locking member 20 is in the first installation state, to separate the first connector 30 from the second connector 10, the locking member 20 must first be removed from the second connector 10 to separate the stopper 26 from the first connector 30, and then the first connector 30 can be removed from the second connector 10. From the above analysis, it can be seen that the locking member 20 and the second connector 10 are firmly connected, and the locking member 20 and the second connector 10 cannot be separated by simple operation, and therefore the first connector 30 cannot be separated from the second connector 10.

[0062] In one embodiment, the second connector 10 is provided with an opening 115, which exposes the first latch portion 112 and the second latch portion 113. The opening 115 facilitates the first latch portion 112 and the second latch portion 113. In the first installation state, the locking member 20 blocks the opening 115. Of course, in other embodiments, the second connector 10 may not be provided with the opening 115, that is, the first latch portion 112 and the second latch portion 113 are not exposed. With this arrangement, in the first installation state, a worker cannot access the first latch portion 112 and the first locking member 22, cannot separate the first latch portion 112 and the first locking member 22, and thus cannot separate the first connector 30 from the second connector 10. To separate the first connector 30 from the second connector 10, the pipe connection structure 200 must be damaged to remove the locking member 20 from the second connector 10, and then the first connector 30 and the second connector 10 can be separated.

[0063] In one embodiment, in the first installation state, the body 21 blocks the installation opening 111. That is, in the first installation state, both the installation opening 111 and the opening 115 on the side wall of the second connector 10 are blocked. This arrangement prevents access to the first latching portion 112 and the first locking portion 22 in the first installation state, further increasing the difficulty of separating the first latching portion 112 from the first locking portion 22.

[0064] Furthermore, the locking member 20 includes a plate portion 211 extending from both ends of the body 21. The plate portion 211 is located on the same side of the body 21 as the limiting portion 26 and the first locking portion 22, and is located outside the first locking portion 22 and the limiting portion 26. When the locking member 20 is in the first installed state, the plate portion 211 blocks the opening 115.

[0065] Furthermore, the two plate portions 211 respectively abut against opposite sides of the second connector 10. Thus, in the first installation state, the locking member 20 cannot rotate relative to the second connector 10, further increasing the difficulty of separating the locking member 20 from the second connector 10, thereby making the connection between the first connector 30 and the second connector 10 more secure.

[0066] In one embodiment, the stopper 26 may include a baffle. In the illustrated embodiment, two stoppers 26 are formed by extending from the side of the body 21. The two stoppers 26 can pass through the mounting opening 111 at positions on either side of the stopper 114. Providing two stoppers 26 can further secure the connection between the first connector 30 and the second connector 10. In other embodiments, the number of stoppers 26 may be one or more.

[0067] In one embodiment, see Figure 4 and Figure 5The locking member 20 may further include a second cantilever 23 formed by extending from the side of the body 21, and the first locking portion 22 is provided at the free end of the second cantilever 23. The first locking portion 22 is provided with a second guide surface 221, and the second guide surface 221 is used to reduce the resistance of the first snap portion 112 to the first locking portion 22 during the process of the first locking portion 22 entering the second connector 10. The second guide surface 221 may be an inclined surface or an arc-shaped surface. As shown in the figure, when the first locking portion 22 is engaged with the first snap portion 112, in the direction of the locking member 20 entering the second connector 10, the second guide surface 221 may extend in a direction away from the inner wall where the first locking portion 22 is located. The locking member 20 is inserted into the second connector 10 through the mounting opening 111. A force is applied to the locking member 20 in the direction in which the locking member 20 enters the second connector 10. As the first locking portion 22 enters the second connector 10, the second guide surface 221 reduces the resistance encountered by the first locking portion 22 as it passes through the first snap portion 112, making it easier for the first locking portion 22 to deflect toward the side of the first snap portion 112. As the first locking portion 22 deflects toward the side of the first snap portion 112, the second cantilever 23 deforms. Thereafter, the first locking portion 22 continues to move away from the mounting opening 111 until it is misaligned with the first snap portion 112. The second cantilever 23 recovers its deformation, and the first locking portion 22 moves to the side of the first snap portion 112 away from the mounting opening 111, achieving engagement between the first locking portion 22 and the first snap portion 112.

[0068] During the process of the first locking portion 22 entering the second joint 10, the third guide surface 1121 of the first snap portion 112 cooperates with the second guide surface 221, which can further reduce the resistance of the first snap portion 112 to the first locking portion 22, making it easier for the first locking portion 22 to deviate toward the side of the first snap portion 112, making it easier to achieve cooperation between the first snap portion 112 and the first locking portion 22.

[0069] In the illustrated embodiment, when the locking member 20 is in the first installation state, one side of the body 21 provided with the first latch portion 112 abuts against the stop portion 114 of the second connector 10, and the second cantilever 23 enters the second connector 10 from positions on both sides of the stop portion 114 at the installation opening 111. The stop portion 114 restricts the first locking portion 22 from moving away from the installation opening 111, while the first latch portion 112 restricts the first locking portion 22 from moving toward the installation opening 111. This allows the first latch portion 112 to better cooperate with the first locking portion 22, resulting in a more secure connection between the first connector 30 and the second connector 10.

[0070] In one embodiment, the locking member 20 may be provided with two or more first locking portions 22, each of which corresponds one-to-one with the two or more first snapping portions 112 of the second connector 10. When the locking member 20 is installed on the second connector 10 and is in the first installed state, each first locking portion 22 engages with the corresponding first snapping portion 112. This arrangement allows the locking member 20 to be more securely mounted on the second connector 10, thereby making the connection between the first connector 30 and the second connector 10 more secure and less likely to separate.

[0071] The locking member 20 may further include a first cantilever 24 extending from a side of the body 21 and a second locking portion 25 disposed at a free end of the first cantilever 24 . The second locking portion 25 and the first locking portion 22 are located on the same side of the body 21 .

[0072] The locking member 20 can also have a second installation state. Figures 10 to 14 In the second installation state, the locking member 20 partially enters the second connector 10, and the second locking portion 25 cooperates with the second snap portion 113 to fix the locking member 20 to the second connector 10. After the first connector 30 enters the second connector 10, the second locking portion 25 separates from the second snap portion 113.

[0073] Before the first connector 30 enters the second connector 10, when the locking member 20 is installed on the second connector 10, the second latch portion 113 cooperates with the second latch portion 25 to secure the locking member 20 to the second connector 10, thereby preventing the locking member 20 from being separated from the second connector 10 and being lost. At this point, the locking member 20 is in the second installation state.

[0074] Afterwards, the first connector 30 is inserted into the second connector 10 through the insertion port 116, so that the limiting portion 26 is located on the side of the limiting protrusion 32 of the first connector 30 facing away from the insertion port 116, and the second locking portion 25 is separated from the second snap portion 113. The locking member 20 continues to enter the second connector 10, so that the first locking portion 22 engages with the first snap portion 112, thereby completing the connection between the first connector 30 and the connector connection structure 100. At this point, the locking member 20 transitions from the second installation state to the first installation state.

[0075] In one embodiment, see Figure 4 and Figure 5, the first cantilever 24 can be extended to form a pushing portion 241. When the first joint 30 enters the second joint 10, the first joint 30 pushes the pushing portion 241, driving the first cantilever 24 to move in the direction in which the first joint 30 enters the second joint 10. That is, the first joint 30 drives the first cantilever 24 to deform in the direction in which the first joint 30 enters the second joint 10, and the first cantilever 24 drives the second locking portion 25 to move, thereby separating the second locking portion 25 from the second snap portion 113. Afterwards, the locking member 20 continues to enter the second joint 10. When the locking member 20 changes from the second installation state to the first installation state, the first cantilever 24 and the second snap portion 113 are misaligned, and the first cantilever 24 recovers its deformation. By providing the pushing portion 241, the separation of the second locking portion 25 from the second snap portion 113 can be made easier to control and operate, making the use of the joint connection structure 100 simpler and more convenient.

[0076] In one embodiment, after the locking member 20 enters the second connector 10, the limiting portion 26 is closer to the insertion opening 116 than the first cantilever 24. In the first installation state of the locking member 20, the limiting protrusion 32 of the first connector 30 is located between the limiting portion 26 and the pushing portion 241. The limiting portion 26 prevents the first connector 30 from exiting the second connector 10, and the pushing portion 241 prevents the first connector 30 from moving further away from the insertion opening 116, thereby ensuring a more secure connection between the first connector 30 and the second connector 10.

[0077] Figures 10 to 14 In the illustrated embodiment, when the second locking portion 25 engages with the second latching portion 113, the second locking portion 25 is located between the first protrusion 1131 and the second protrusion 1132 of the second latching portion 113. The first protrusion 1131 restricts the second locking portion 25 from moving toward the mounting opening 111, while the second protrusion 1132 restricts the second locking portion 25 from moving away from the mounting opening 111, thereby securing the locking member 20 to the second connector 10.

[0078] During the installation of the locking member 20 into the second connector 10 through the installation opening 111, a force is applied to the locking member 20 in the direction in which the locking member 20 enters the second connector 10. As the second locking portion 25 passes the second latching portion 113, the first guide surface 1133 of the first protrusion 1131 reduces the resistance of the first protrusion 1131 on the second locking portion 25, making it easier for the second locking portion 25 to deflect toward the side of the first protrusion 1131. As the second locking portion 25 deflects toward the side of the first protrusion 1131, the first cantilever 24 deforms. Subsequently, the second locking portion 25 continues to move away from the installation opening 111 until it is misaligned with the first protrusion 1131. The first cantilever 24 recovers its deformation, and the second locking portion 25 moves between the first protrusion 1131 and the second protrusion 1132, achieving engagement between the second locking portion 25 and the second latching portion 113.

[0079] In one embodiment, the locking member 20 may be provided with two or more first cantilever arms 24 and two or more second locking portions 25 corresponding one-to-one with the two or more first cantilever arms 24. Each second locking portion 25 is disposed on a corresponding first cantilever arm 24. In the illustrated embodiment, when the locking member 20 is in the second installation state, the two or more second locking portions 25 correspond one-to-one with the two or more second snap-fit ​​portions 113 of the second connector 10. Each second locking portion 25 engages with a corresponding second snap-fit ​​portion 113. This arrangement allows the locking member 20 to be more securely mounted on the second connector 10.

[0080] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with this profession can make slight changes or modifications to equivalent embodiments with equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

[0081] The disclosure of this patent document contains material that is subject to copyright protection. The copyright is reserved by the copyright owner. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the official records and files of the Patent and Trademark Office.

Claims

1. A joint connection structure, used for connecting to a first joint (30), characterized in that: The joint connection structure (100) comprises: The second connector (10) is a tubular structure, the second connector (10) is provided with a mounting port (111) and an insertion port (116), and the inner surface is provided with a first buckle portion (112); A locking member (20) comprises a body (21), a first locking portion (22) and a limiting portion (26) arranged on a side of the body (21), wherein the limiting portion (26) and the first locking portion (22) are located on the same side of the body (21); The locking member (20) can be installed on the second connector (10) through the installation opening (111); in a first installation state, the first connector (30) enters the second connector through the insertion opening (116); the locking member (20) enters the second connector (10); the first locking portion (22) cooperates with the first snap-fit ​​portion (112) to fix the locking member (20) to the second connector (10); and the limiting portion (26) prevents the first connector (30) from exiting the second connector (10); The inner surface of the second connector (10) is further provided with a second snap-fit ​​portion (113), and the second snap-fit ​​portion (113) is closer to the plug-in port (116) than the first snap-fit ​​portion (112). The locking member (20) further comprises a first cantilever (24) formed by extending from the side of the body (21) and a second lock portion (25) provided at the free end of the first cantilever (24), and the second lock portion (25) and the first lock portion (22) are located on the same side of the body (21); the first cantilever (24) is extended to form a push portion (241), and the first connector (30) enters the second connector (10), and the first connector (30) pushes the push portion (241). The first cantilever (241) drives the first cantilever (24) to move along the direction in which the first joint (30) enters the second joint (10), so that the second locking portion (25) is separated from the first snap-fit ​​portion (112); the second snap-fit ​​portion (113) includes a first protrusion (1131) and a second protrusion (1132) that are arranged opposite to each other, and in the direction in which the locking member (20) enters the second joint (10), the first protrusion (1131) and the second protrusion are arranged at intervals, and when the second snap-fit ​​portion (113) cooperates with the second locking portion, the second locking portion (25) is located between the first protrusion (1131) and the second protrusion (1132); In the second installation state, the locking member (20) partially enters the second connector (10), and the second locking portion (25) cooperates with the second snap-fit ​​portion (113) to fix the locking member (20) to the second connector (10); after the first connector (30) enters the second connector (10), the second locking portion (25) separates from the second snap-fit ​​portion (113).

2. The joint connection structure according to claim 1, characterized in that: The inner surface of the second joint (10) is provided with two or more second snap-fit ​​portions (113), and the locking member (20) is provided with two or more second snap-fit ​​portions (25), the two or more second snap-fit ​​portions (113) correspond one-to-one with the two or more second snap-fit ​​portions (113), and the two or more second snap-fit ​​portions (113) are distributed on opposite sides of the inner surface of the second joint (10).

3. The joint connection structure according to claim 1, characterized in that: The first protrusion is closer to the installation opening (111) than the second protrusion. The first protrusion (1131) is provided with a first guide surface (1133). The first guide surface (1133) is used to reduce the resistance of the first protrusion (1131) to the second locking portion (25) during the process of the second locking portion (25) entering the second joint (10).

4. The joint connection structure according to claim 1, characterized in that: The inner surface of the second joint (10) is provided with two or more first snap-fit ​​portions (112), and the locking member (20) is provided with two or more first snap-fit ​​portions (22), the two or more first snap-fit ​​portions (112) correspond one-to-one with the two or more first snap-fit ​​portions (112), and the two or more first snap-fit ​​portions (112) are distributed on opposite sides of the inner surface of the second joint (10).

5. The joint connection structure according to claim 1, characterized in that: A stop portion is provided in the second joint (10), and when the first snap portion (112) cooperates with the first locking portion (22), a side of the body (21) provided with the first locking portion (22) abuts against the stop portion.

6. The joint connection structure according to claim 1, characterized in that: The locking member (20) further comprises a second cantilever (23) formed by extending from a side portion of the body (21), the first locking portion (22) being arranged at a free end of the second cantilever (23), the first locking portion (22) being provided with a second guide surface (221), the second guide surface (221) being used to reduce the resistance of the first latching portion (112) to the first locking portion (22) during the process of the first locking portion (22) entering the second joint (10); and / or, The first locking portion (112) is provided with a third guide surface (1121), and the third guide surface (1121) is used to reduce the resistance of the first locking portion (22) to the first locking portion (22) during the process of the first locking portion (22) entering the second joint (10).

7. The joint connection structure according to claim 1, characterized in that: In the first installation state, the locking member (20) completely enters the second joint (10); and / or, The second connector (10) is provided with an opening (115), wherein the opening (115) exposes the first buckle portion, and in the first installation state, the locking member (20) blocks the opening (115).

8. A pipeline connection structure, characterized in that: It comprises the joint connection structure (100) according to any one of claims 1 to 7 and a first joint (30), wherein the first joint (30) can be connected to the joint connection structure (100).

9. The pipeline connection structure according to claim 8, characterized in that: A limiting protrusion (32) is provided on the outer surface of the first connector (30). In the first installation state, the first connector (30) enters the second connector (10) through the plug interface (116), and the limiting protrusion (32) abuts against a side of the limiting portion (26) facing away from the plug interface (116).

10. A crankcase ventilation line, characterized in that: It comprises the pipeline connection structure (200) according to claim 8 or 9.

11. A vehicle, characterized in that: Including the crankcase ventilation line according to claim 10.

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