CN111720640A

CN111720640A - Pipeline connection structure, engine pipeline and vehicle

Info

Publication number: CN111720640A
Application number: CN201910207071.1A
Authority: CN
Inventors: 赵明
Original assignee: Shanghai Datro Automobile Technology Co ltd
Current assignee: Shanghai Datro Automobile Technology Co ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-09-29

Abstract

The application provides a pipeline connection structure, engine pipeline and vehicle. The pipeline connecting structure comprises a first joint and a second joint, and the first joint and the second joint are respectively of a hollow structure; the first joint comprises a first section and a second section connected with the first section, and the second joint comprises a third section and a fourth section connected with the third section; the third section being disposed within the first section, the fourth section being partially disposed within the second section, the second joint being deflectable within the first joint relative to the axis of the first joint such that the third section is deflected within the first section relative to the axis of the first joint and the fourth section is deflected within the second section relative to the axis; the second joint and the first joint can move relatively along the axis, and the third section and the second section abut against each other when approaching along the axis.

Description

Pipeline connection structure, engine pipeline and vehicle

Technical Field

The application relates to the technical field of heat exchange, in particular to a pipeline connecting structure, an engine pipeline and a vehicle.

Background

When a transmitter of a vehicle is started or driven, an engine pipeline can stretch and rotate to different degrees.

In the related art, a rubber tube is added in the middle of the engine pipeline, and the toughness of the rubber tube enables the engine pipeline to stretch and deflect. But the high temperature resistance of rubber tube is relatively poor, when the temperature of engine pipeline is higher, can cause the harm to the rubber tube, and then influences the normal work of engine pipeline.

Disclosure of Invention

The application provides a pipeline connection structure, engine pipeline and vehicle.

According to a first aspect of the embodiments of the present application, a pipeline connecting structure is provided, where the pipeline connecting structure includes a first joint and a second joint, and the first joint and the second joint are hollow structures respectively;

the first joint comprises a first segment and a second segment connected with the first segment, and the second joint comprises a third segment and a fourth segment connected with the third segment;

said third section being disposed within said first section, said fourth section being partially disposed within said second section, said second joint being deflectable within said first joint relative to the axis of said first joint such that said third section is deflected within said first section relative to the axis of said first joint and said fourth section is deflected within said second section relative to said axis; the second joint and the first joint can move relatively along the axis, and the third section and the second section abut against each other when the third section and the second section approach along the axis.

Optionally, the inner wall of the first segment has a circumferential dimension greater than a maximum circumferential dimension of the third segment, the inner wall of the second segment has a circumferential minimum dimension greater than a circumferential dimension of the fourth segment, and the maximum circumferential dimension of the third segment is greater than the minimum circumferential dimension of the inner wall of the second segment.

Optionally, the first joint comprises a body and a snap ring, the body comprises a first part and a second part connected with the first part, a through groove is arranged on the wall of the second part, the snap ring is fixedly arranged in the through groove, and the inner wall of the snap ring protrudes inwards relative to the inner wall of the second part;

the first section includes the first portion and the second section includes the second portion and the snap ring.

Optionally, the snap ring is removably attached to the second portion.

Optionally, the two ends of the snap ring are respectively provided with a snap protrusion, the second part is provided with a limiting groove communicated with the through groove, and when the snap ring is connected with the second part, the snap protrusion enters the limiting groove and abuts against the inner wall of the limiting groove.

Optionally, the snap ring comprises a snap ring body and a connecting portion formed by extending two ends of the snap ring body, the free end of the connecting portion protrudes outwards to form the buckle protrusion, and the thickness of the connecting portion is smaller than or equal to that of the snap ring body.

Optionally, a groove is formed in the inner wall of the snap ring, a limiting block is arranged in the through groove, and the limiting block is matched with the groove when the snap ring is connected with the second portion.

Optionally, the snap rings are arc-shaped, the number of the snap rings is two or more, the second portion is provided with through grooves corresponding to the snap rings one by one, and the two or more through grooves are uniformly distributed at intervals.

Optionally, the inner wall of the snap ring comprises a first wall surface and a second wall surface adjacent to the first wall surface, the first wall surface is closer to the first segment than the second wall surface, and the first wall surface extends obliquely outward from an end connected with the second wall surface to an end away from the second wall surface;

the outer wall of the third segment comprises a third wall surface and a fourth wall surface adjacent to the third wall surface, the fourth wall surface is closer to the fourth segment than the third wall surface, and the fourth wall surface extends from the end connected with the third wall surface to the end far away from the third wall surface in an inclined and inward mode;

when the third section abuts against the second joint, the third wall surface abuts against the first wall surface.

Optionally, an annular groove is formed in the outer wall of the third segment, a sealing element is arranged in the annular groove, and the sealing element abuts against the wall of the annular groove and the inner wall of the first segment respectively.

According to a second aspect of the embodiments of the present application, there is provided an engine pipe including the pipe connection structure described above.

According to a third aspect of embodiments of the present application, there is provided a vehicle comprising the engine circuit described above.

According to the pipeline connecting structure, the engine pipeline and the vehicle, the second joint of the pipeline connecting structure can deflect relative to the axis of the first joint in the first joint, so that the third section deflects relative to the axis of the first joint in the first section, and the fourth section deflects relative to the axis of the first joint in the second section, so that the two pipelines connected with the pipeline connecting structure can deflect to a certain degree, and different pipe sections of the engine pipeline can deflect relatively when the pipeline connecting structure is used in the engine pipeline; because the second joint and the first joint can move relatively along the axis of the first joint, and the third section and the second section abut against each other when the third section and the second section approach along the axis of the first joint, two pipelines connected with two ends of the pipeline connecting structure can stretch along the axis of the first joint and can not be separated when stretched, and therefore the pipeline connecting structure enables the engine pipeline to stretch and can not be separated when used in the engine pipeline.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

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 application.

Fig. 1 is an exploded perspective view of a pipe connection structure according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of the line connection shown in FIG. 1 taken along a direction parallel to the axis of the first connector;

FIG. 3 is a cross-sectional view of the line connection shown in FIG. 1 taken along a direction perpendicular to the axis of the first connector;

FIG. 4 is a schematic perspective view of a snap ring of the pipe connection shown in FIG. 1;

FIG. 5 is a cross-sectional view of the body of the first fitting shown in FIG. 1 taken in a direction perpendicular to the axis of the first fitting;

fig. 6 is a side view of the second joint shown in fig. 1.

The reference numerals in the figures are respectively:

100. a pipeline connecting structure;

10. a first joint;

11. a body;

111. a first segment;

112. a second section;

113. a second portion;

1121. a through groove;

1122. a limiting groove;

1123. a bump;

1125. a limiting block;

1126. reinforcing ribs;

12. a snap ring;

121. a snap ring body;

122. a connecting portion;

123. the buckle is protruded;

124. a notch;

1211. a first wall surface;

1212. a second wall surface;

1213. a groove;

20. a second joint;

21. a third segment;

22. a fourth segment;

211. a third wall surface;

212. a fourth wall surface;

213. an annular groove;

30. and a seal.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not 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.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

The following describes the pipe connection structure according to the embodiment of the present application in detail with reference to the drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict. Fig. 1 is an exploded perspective view of a pipe connection structure according to an embodiment of the present disclosure; FIG. 2 is a cross-sectional view of the line connection shown in FIG. 1 taken along a direction parallel to the axis of the first connector; FIG. 3 is a cross-sectional view of the line connection shown in FIG. 1 taken along a direction perpendicular to the axis of the first connector; FIG. 4 is a schematic perspective view of a snap ring of the pipe connection shown in FIG. 1; FIG. 5 is a cross-sectional view of the body of the first fitting shown in FIG. 1 taken in a direction perpendicular to the axis of the first fitting; fig. 6 is a side view of the second joint shown in fig. 1.

Referring to fig. 1 and 2, the embodiment of the present application provides a pipeline connecting structure 100, where the pipeline connecting structure 100 includes a first joint 10 and a second joint 20, and the first joint 10 and the second joint 20 are respectively of a hollow structure.

The first joint 10 includes a first segment 111 and a second segment 112 connected to the first segment 111, and the second joint 20 includes a third segment 21 and a fourth segment 22 connected to the third segment 21. The third section 21 is disposed within the first section 111 and the fourth section 22 is partially disposed within the second section 112. The second joint 20 is deflectable within the first joint 10 relative to the axis of the first joint 10, such that the third section 21 is deflected within the first section 111 relative to the axis of the first joint 10, and the fourth section 22 is deflected within the second section 112 relative to the axis of the first joint 10; the second joint 20 and the first joint 10 can move relatively along the axis of the first joint 10, and the third section 21 and the second section 112 abut against each other when the third section 21 and the second section 112 approach along the axis of the first joint 10.

In the pipe joint 100 provided by the embodiment of the present application, the fourth segment 22 is partially disposed in the second segment 112, and another part of the fourth segment is exposed out of the second segment 112, and the part exposed out of the second segment 112 can be used for connecting with a pipeline. In connecting two lengths of pipe, the free end of the first section 111 of the first coupling 10 is connected to one length of pipe and the free end of the fourth section 22 of the second coupling 20 is connected to the other length of pipe so that the pipe coupling 100 can connect two lengths of pipe.

According to the pipe connection structure 100 provided by the embodiment of the application, since the second joint 20 can deflect relative to the axis of the first joint 10 in the first joint 10, so that the third section 21 deflects relative to the axis of the first joint 10 in the first section 111, and the fourth section 22 deflects relative to the axis of the first joint 10 in the second section 112, two pipes connected with the pipe connection structure 100 can deflect to a certain extent, so that different pipe sections of an engine pipe can deflect relatively when the pipe connection structure 100 is used in the engine pipe; because the second joint 20 and the first joint 10 can move relatively along the axis of the first joint 10, and the third section 21 and the second section 112 abut against each other when the third section 21 and the second section 112 approach along the axis of the first joint 10, two pipelines connected to two ends of the pipeline connecting structure 100 can extend and contract along the axis of the first joint 10, and the two pipelines cannot be separated when being stretched, so that the pipeline connecting structure 100 can extend and contract without being separated when being used in an engine pipeline.

Wherein, the second joint 20 can deflect relative to the axis of the first joint 10 in the first joint 10 means that the second joint 20 can deflect relative to the axis of the first joint 10 by a certain angle, that is, before the second joint 20 deflects relative to the axis of the first joint 10, the axis of the first joint 10 coincides with the axis of the second joint 20 or is parallel to each other, and after the second joint 20 deflects relative to the axis of the first joint 10, the axis of the first joint 10 and the axis of the second joint 20 form a certain angle; the deflection of the second connector 20 relative to the axis of the first connector 10 may be in a plurality of directions, for example the second connector 20 may be deflected relative to the axis of the first connector 10 to any orientation in the circumferential direction of the axis.

The second joint 20 is deflected with respect to the axis of the first joint 10, either the first joint 10 is kept stationary, the second joint 20 is deflected, the second joint 20 is kept stationary, the first joint 10 is deflected, or both the first joint 10 and the second joint 20 are deflected. The second joint 20 and the first joint 10 can move relatively along the axis of the first joint 10, and the first joint 10 can be kept still, the second joint 20 can move, the second joint 20 can be kept still, the first joint 10 can move, or the first joint 10 and the second joint 20 can move simultaneously.

In one embodiment, the inner wall of the first segment 111 has the same circumferential dimension throughout, the outer wall of the fourth segment 22 has the same circumferential dimension throughout, the outer wall of the third segment 21 may not have the same circumferential dimension throughout, the inner wall of the second segment 112 may not have the same circumferential dimension throughout, and the inner wall of the first segment 111 may have a circumferential dimension greater than the largest outer wall of the third segment 21 such that a gap exists between the inner wall of the first segment 111 and the outer wall of the third segment 21 such that the first segment 111 may deflect within the third segment 21 relative to the axis of the first joint 10 and the first segment 111 and the third segment 21 may move relative to each other along the axis of the first joint 10. The minimum dimension of the inner wall of the second segment 112 in the circumferential direction may be larger than the outer dimension of the fourth segment 22, and there is a gap between the inner wall of the second segment 112 and the outer wall of the fourth segment 22, so that the second segment 112 can be deflected in the fourth segment 22 relative to the axis of the first joint 10, and the second segment 112 and the fourth segment 22 can be moved relative to each other along the axis of the first joint 10. The largest outer peripheral dimension of the third section 21 is larger than the smallest dimension of the inner wall of the second section 112 along the circumferential direction, so that the third section 21 and the second section 112 abut against each other when the third section 21 and the second section 112 approach each other along the axis of the first joint 10.

When the cross section of the first segment 111 perpendicular to the axis is circular, the inner diameter of the inner wall of the first segment 111 along the circumferential direction is the diameter of the inner wall; when the section of the fourth segment 22 perpendicular to the axis is circular, the peripheral dimension of the fourth segment 22 refers to the outer diameter thereof; when the cross section of each part of the second segment 112 perpendicular to the axis thereof is a circular ring shape, the minimum size of the inner wall of the second segment 112 along the circumferential direction refers to the minimum value of the inner diameter corresponding to each part thereof, or when the inner wall of the second segment 112 is composed of a plurality of circular arcs, the minimum size of the inner wall of the second segment 112 along the circumferential direction may refer to the minimum value of the inner diameter of the circle where the corresponding circular arc of each part of the second segment 112 is located; when the third section 21 is circular in cross-section perpendicular to its axis, then the maximum peripheral dimension of the third section 21 refers to the maximum of the outer diameter of the third section at each location.

In one embodiment, the first joint 10 includes a body 11 and a snap ring 12, the body 11 includes a first portion and a second portion 113 connected to the first portion, a through groove 1121 is formed on a wall of the second portion 113, the snap ring 12 is fixedly disposed in the through groove 1121, and an inner wall of the snap ring 12 protrudes inward relative to an inner wall of the second portion 113. The first section 111 comprises the first portion and the second section 112 comprises the second portion 113 and the snap ring 12. With such an arrangement, the minimum size of the inner wall of the second segment 112 along the circumferential direction is the inner wall of the snap ring 12, and when the third segment 21 and the second segment 112 approach along the axis of the first joint 10, the third segment 21 can abut against the snap ring 12. Moreover, when the first joint 10 is manufactured, the inner diameters of the first portion and the second portion 113 can be manufactured to be the same, the through groove 1121 is formed in the second portion 113, and the snap ring 12 is arranged in the through groove 1121, so that the minimum size of the inner wall of the second section 112 along the circumferential direction is smaller than the maximum peripheral size of the third section 21, the manufacturing of the first joint 10 can be facilitated, and the manufacturing process flow can be simplified. Wherein the first section 111 of the first joint 10 may comprise only the first part. The inner diameter of the circular ring formed by the inner wall of the snap ring 12 is the smallest dimension of the inner wall of the second section 112 along the circumferential direction.

In one embodiment, the snap ring 12 is removably attached to the second portion 113 of the first connector 10. With this arrangement, when the first joint 10 and the second joint 20 are assembled together, the third segment 21 can be pushed into the first segment 111, and then the snap ring 12 can be mounted in the through groove 1121, so that the snap ring 12 can be fixed in the through groove 1121; when the first joint 10 is disconnected from the second joint 20, the snap ring 12 is removed, and the first joint 10 is removed from the second joint 20. Therefore, the snap ring 12 is detachably connected to the second portion 113 of the first connector 10, which facilitates the assembly and disassembly of the first connector 10 and the second connector 20. Of course, the snap ring 12 and the second portion 113 may also be non-detachably connected.

In one embodiment, referring to fig. 3 and 4, the two ends of the snap ring 12 are respectively provided with a snap protrusion 123, the second portion 113 is provided with a limit groove 1122 communicated with the through groove 1121, and when the snap ring 12 is connected with the second portion 113, the snap protrusion 123 enters the limit groove 1122 and abuts against the inner wall of the limit groove 1122. The fastening protrusion 123 enters the limiting groove 1122 and abuts against the inner wall of the limiting groove 1122, so that the connection between the snap ring 12 and the second portion 113 is firmer; after the snap protrusions 123 are taken out of the limiting grooves 1122, the snap ring 12 can be separated from the second portion 113, so that the snap ring 12 and the second portion 113 can be assembled and disassembled conveniently.

The fastening protrusion 123 may be formed by protruding the end of the snap ring 12 outward, when the snap ring 12 is pushed into the through groove 1121, the two ends of the snap ring 12 contract inward, and the fastening protrusion 123 may enter the second portion 113 through the through groove 1121 and enter the limiting groove 1122 along the inner wall of the second portion 113; after the snap protrusion 123 is aligned with the limiting groove 1122, two ends of the snap ring 12 extend outward, the snap protrusion 123 enters the limiting groove 1122, and the snap protrusion 123 abuts against a wall of the limiting groove 1122 close to the snap protrusion 123, so that the snap ring 12 is firmly connected with the second portion 113. When the snap ring 12 is taken out of the second portion 123, the two ends of the snap ring 12 are contracted inwards, the snap protrusions 123 are separated from the limiting grooves 1122, and the snap ring 12 is pulled outwards, so that the snap ring 12 can be taken out of the second portion 113.

Referring to fig. 5, a protrusion 1123 is disposed between the through groove 1121 and the limiting groove 1122, and a wall of the protrusion 1123 facing the limiting groove 1122 is a wall of the limiting groove 1122 abutting against the fastening protrusion 123. The limiting groove 1122 is communicated with the through groove 1121 through the inner cavity of the second portion 113.

In one embodiment, the snap ring 12 may be arc-shaped, the number of the snap ring 12 may be two or more, the second portion 113 is respectively provided with through grooves 1121 corresponding to the snap ring 12 one by one, and two ends of each through groove 1121 of the second portion 113 are respectively provided with a limiting groove 1122. Referring to fig. 3 again, a limiting groove 1122 may be disposed between two adjacent through grooves 1121, and when the snap ring 12 is installed in the second portion 113, two adjacent snap protrusions 123 of two snap rings 12 may share one limiting groove 1122. When the number of the snap rings 12 is two or more, the size of each snap ring 12 can be made smaller to facilitate the connection of the snap ring 12 with the second portion 113, and the disengagement of the first joint 10 from the second joint 20 can be prevented when two or more snap rings 12 are connected with the second portion 113.

Fig. 3 only illustrates that the number of the snap rings 12 is two, and when the number of the snap rings 12 is two, only two through grooves 1121 need to be formed in the second portion 113, so that the structural complexity of the second portion 113 can be simplified. In other embodiments, the number of snap rings 12 may include three, four, or more. The sizes and the structures of the two or more than two snap rings 12 can be respectively the same, so that the two or more than two snap rings 12 can be manufactured by sharing one die, and the manufacturing cost can be reduced.

In one embodiment, referring again to fig. 4, the snap ring 12 may include a snap ring body 121 and a connecting portion 122 formed by extending both ends of the snap ring body 121, and a free end of the connecting portion 122 protrudes outward to form the snap projection 123. The thickness of the connecting portion 122 is smaller than that of the snap ring body 121. Here, the thickness of the connecting portion 122 refers to a dimension perpendicular to the extending direction of the snap ring 12. Because the thickness of the snap ring body 121 is greater than that of the connecting part 122, the snap ring body 121 is firmer and is not easy to break; thickness through setting up connecting portion 122 is less than snap ring body 121, can increase the elasticity of connecting portion 122, and connecting portion 122 takes place deformation more easily and inwards contracts to make buckle arch 123 on connecting portion 122 more easily enter into spacing groove 1122. In other embodiments, the thickness of the connecting portion 122 may be equal to or slightly greater than the thickness of the snap ring body 121.

Further, each end of the snap ring body 121 may include two connecting portions 122, the end of each connecting portion 122 is provided with a snap protrusion 123, the two connecting portions 122 may be arranged along the thickness direction of the snap ring 12, and each end of the through groove 1121 of the second portion 113 is provided with two limiting grooves 1122 corresponding to the two snap protrusions 123 of one connecting portion 122. With such an arrangement, when the snap ring 12 is connected to the second portion 113, the two snap protrusions 123 at each end of the snap ring 12 enter the corresponding limiting grooves 1122, so that the snap ring 12 is connected to the second portion 113 more firmly.

Both ends of the snap ring 12 may be respectively provided with a gap 124, and the gap 124 separates the connecting portion 122 from the snap ring body 121 in a direction parallel to the extending direction of the connecting portion 122. Such an arrangement may make the connecting portion 122 smaller in size perpendicular to the extending direction thereof and perpendicular to the thickness direction thereof, thereby making it easier for the connecting portion 122 to contract inward.

In one embodiment, referring to fig. 3 and 4 again, a groove 1213 is disposed on an inner wall of the snap ring 12, a stop block 1125 is disposed in the through groove 1121, and when the snap ring 12 is connected to the second portion 113, the stop block 1125 is engaged with the groove 1213. When the snap ring 12 is pushed into the groove 1213, the inner wall of the groove 1213 abuts against the limiting block 1125, and the cooperation of the groove 1213 and the limiting block 1125 can prevent the snap ring 12 from continuously entering the interior of the second portion 113, so that the snap ring 12 is more firmly connected with the second portion 113.

In one embodiment, referring to fig. 5 again, the portions of the second portion 113 on both sides of the through slot 1121 are provided with reinforcing ribs 1126, the portions of the through slot 1121 on both sides are connected by the protrusions 1123, the stop block 1125 and the reinforcing ribs 1126, and the reinforcing ribs 1126 can reinforce the first connector 10.

Further, when the snap ring 12 is connected to the second portion 113, the notch 124 of the snap ring 12 is engaged with the outside of the rib 1126, and the snap ring 12 is prevented from entering the second portion 113.

In one embodiment, referring again to fig. 2, the inner wall of the snap ring 12 includes a first wall 1211 and a second wall 1212 adjacent to the first wall 1211, the first wall 1211 is closer to the first segment 111 than the second wall 1212, and the first wall 1211 extends from an end connected to the second wall 1212 to an end away from the second wall 1212. Referring to fig. 2 and 6, the outer wall of the third segment 21 includes a third wall 211 and a fourth wall 212 adjacent to the third wall 211, the fourth wall 212 is closer to the fourth segment 22 than the third wall 211, and the fourth wall 212 extends from an end connected to the third wall 211 to an end away from the third wall 211. When the third segment 21 abuts against the second segment 112, the third wall 211 abuts against the first wall 1211, that is, at least a portion of the third wall 211 abuts against the first wall 1211, so as to prevent the third segment 21 from being separated from the second segment 112, and to enable the third segment 21 to be connected with the second segment 112 more firmly.

In one embodiment, an annular groove 213 is formed on an outer wall of the third segment 21, a sealing member 30 is disposed in the annular groove 213, and the sealing member 30 abuts against a wall of the annular groove 213 and an inner wall of the first segment 111. The sealing member 30 can improve the sealing property between the first connector 10 and the second connector 20, and prevent the leakage of the substance in the pipeline connected to the pipeline connecting connector 100. The sealing element 30 may be an elastic sealing ring, such as a rubber sealing ring, which has a relatively high elasticity and always abuts against the wall of the annular groove 213 and the inner wall of the first section 111 when the first joint 10 and the second joint 20 deflect. The thickness of the sealing member 30 may be determined according to the gap between the first segment 111 and the third segment 21, and the thickness of the sealing member 30 is generally slightly larger than the gap between the first segment 111 and the third segment 21, so as to ensure good sealing performance between the first joint 10 and the second joint 20 even if the two joints are deflected relatively. Wherein an annular groove 213 may be provided on the third wall 211.

The embodiment of the application also provides an engine pipeline, which comprises the pipeline connecting structure 100.

The transmitter pipeline may further include two sections of pipelines respectively connected to the two free ends of the pipeline connection structure 100.

In the engine pipeline provided by the embodiment of the application, as the second joint 20 of the pipeline connecting structure 100 can deflect relative to the axis of the first joint 10 in the first joint 10, so that the third section 21 deflects relative to the axis of the first joint 10 in the first section 111, and the fourth section 22 deflects relative to the axis of the first joint 10 in the second section 112, the two pipelines connected with the pipeline connecting structure 100 can deflect to a certain extent, so that different pipe sections of the engine pipeline can deflect relatively when the pipeline connecting structure 100 is used in the engine pipeline; because the second joint 20 and the first joint 10 can move relatively along the axis of the first joint 10, and the third section 21 and the second section 112 abut against each other along the axis of the first joint 10 when the third section 21 and the second section 112 approach each other, the two pipelines connected to the two ends of the pipeline connecting structure can extend and contract along the axis of the first joint 10, and the two pipelines cannot be separated when being stretched, so that the pipeline connecting structure 100 can extend and contract without being separated when being used in an engine pipeline.

The embodiment of the application also provides a vehicle, and the vehicle comprises the engine pipeline.

In the vehicle provided by the embodiment of the application, since the second joint 20 of the pipeline connecting structure 100 in the engine pipeline can deflect relative to the axis of the first joint 10 in the first joint 10, so that the third section 21 deflects relative to the axis of the first joint 10 in the first section 111, and the fourth section 22 deflects relative to the axis of the first joint 10 in the second section 112, two pipelines connected with the pipeline connecting structure 100 can deflect to a certain extent, so that different pipeline sections of the engine pipeline can deflect relatively when the pipeline connecting structure 100 is used in the engine pipeline; because the second joint 20 and the first joint 10 can move relatively along the axis of the first joint 10, and the third section 21 and the second section 112 abut against each other along the axis of the first joint 10 when the third section 21 and the second section 112 approach each other, the two pipelines connected to the two ends of the pipeline connecting structure can extend and contract along the axis of the first joint 10, and the two pipelines cannot be separated when being stretched, so that the pipeline connecting structure 100 can extend and contract without being separated when being used in an engine pipeline.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

The disclosure of this patent document contains material which is subject to copyright protection. The copyright is owned 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 patent and trademark office official records and records.

Claims

1. The pipeline connecting structure is characterized by comprising a first joint and a second joint, wherein the first joint and the second joint are respectively of a hollow structure;

2. The piping connection structure according to claim 1, wherein a dimension of an inner wall of said first segment in a circumferential direction is larger than a maximum outer peripheral dimension of said third segment, a minimum dimension of an inner wall of said second segment in the circumferential direction is larger than an outer peripheral dimension of said fourth segment, and the maximum outer peripheral dimension of said third segment is larger than the minimum dimension of the inner wall of said second segment in the circumferential direction.

3. The pipe connecting structure according to claim 1, wherein the first joint comprises a body and a snap ring, the body comprises a first portion and a second portion connected with the first portion, a through groove is formed in a wall of the second portion, the snap ring is fixedly arranged in the through groove, and an inner wall of the snap ring protrudes inward relative to an inner wall of the second portion;

4. The line connection according to claim 3, wherein the snap ring is removably attached to the second portion.

5. The pipeline connecting structure according to claim 4, wherein the two ends of the snap ring are respectively provided with a snap projection, the second portion is provided with a limiting groove communicated with the through groove, and when the snap ring is connected with the second portion, the snap projections enter the limiting groove and abut against the inner wall of the limiting groove.

6. The pipe connection structure according to claim 5, wherein the snap ring includes a snap ring body and a connection portion formed by extending both ends of the snap ring body, a free end of the connection portion protrudes outward to form the snap projection, and a thickness of the connection portion is less than or equal to a thickness of the snap ring body.

7. The pipeline connecting structure according to claim 3, wherein a groove is formed in an inner wall of the snap ring, a limiting block is arranged in the through groove, and the limiting block is matched with the groove when the snap ring is connected with the second portion.

8. The pipeline connecting structure according to claim 3, wherein the snap rings are arc-shaped, the number of the snap rings is two or more, the second portion is provided with through grooves corresponding to the snap rings one by one, and the two or more through grooves are uniformly arranged at intervals.

9. The pipe connection according to claim 3, wherein the inner wall of the retainer ring includes a first wall surface and a second wall surface adjoining the first wall surface, the first wall surface being closer to the first segment than the second wall surface, the first wall surface extending obliquely outward from an end connected to the second wall surface to an end away from the second wall surface;

10. The pipeline connecting structure according to claim 1, wherein an annular groove is formed in an outer wall of the third section, and a sealing member is disposed in the annular groove and abuts against a wall of the annular groove and an inner wall of the first section.

11. An engine circuit, characterized in that it comprises a circuit connection structure according to any one of claims 1 to 10.

12. A vehicle comprising the engine circuit of claim 11.