Pipe assembly and vehicle

Abstract

The utility model provides a kind of pipeline assembly and vehicle, pipeline assembly includes pipe, conducting part and sensor, the inside of pipe is equipped with flow passage;Conducting part is connected with pipe, conducting part includes inner stretch section and exposed section, inner stretch section is located in flow passage, and exposed section is located outside flow passage;Sensor is located outside flow passage, sensor is detachably connected with exposed section, to make sensor can measure the parameter of fluid in flow passage.The installation and dismounting of the sensor of this pipeline assembly are more convenient, and in the installation and dismounting process of sensor, the risk of sensor and pipeline damage is lower.

Description

Technical Field

[0001] This utility model relates to the field of fluid measurement technology, and in particular to a pipeline assembly and a vehicle. Background Technology

[0002] To monitor the state of fluids transported in a pipeline system, sensors are typically used to measure fluid parameters. However, sensor installation and removal are inconvenient. During installation, the user must insert at least a portion of the sensor into the pipe; after measurement, removal requires unplugging the sensor probe. Because the probe and pipe are tightly connected, the installation and removal process is time-consuming and laborious, causing significant inconvenience. Furthermore, the frequent insertion and removal of the sensor causes frequent contact and friction between the sensor and the pipe wall, potentially damaging both and affecting measurement accuracy and the normal operation of the pipeline system. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a pipeline assembly whose sensor is easy to install and remove, and whose risk of damage to the sensor and pipeline is low during the installation and removal process.

[0004] This utility model also proposes a vehicle that includes the above-mentioned pipe assembly.

[0005] A pipe assembly according to a first aspect of the present invention includes: a pipe having a flow channel inside; a conductive member connected to the pipe, the conductive member including an inner extension section and an exposed section, the inner extension section being located inside the flow channel and the exposed section being located outside the flow channel; and a sensor located outside the flow channel, the sensor being detachably connected to the exposed section so that the sensor can measure parameters of the fluid within the flow channel.

[0006] The pipe assembly according to the first aspect of this utility model has at least the following advantages: When installing a sensor to measure fluid parameters inside the flow channel, the user only needs to connect the sensor to the exposed section of the conductive element; the sensor does not need to be inserted into the flow channel, and the sensor does not need to be plugged into the pipe. When removing the sensor (e.g., to replace it), the user only needs to disconnect the sensor from the exposed section of the conductive element; the user does not need to pull the sensor out of the pipe. Therefore, during sensor installation or removal, the conductive element plugged into the pipe does not need to be moved; only the sensor and the conductive element need to be connected or disconnected. During sensor installation or removal, there is minimal contact between the pipe and the sensor, making sensor installation and removal convenient, and the pipe and sensor are less prone to damage.

[0007] According to some embodiments of the present invention, at least one of the inner extension section and the exposed section is closed.

[0008] According to some embodiments of the present invention, the sensor includes a probe, the sensor is a temperature sensor, the conductive element is a heat conductor, and the heat conductor is thermally connected to the probe; or, the sensor includes a probe, the probe and the conductive element are both conductors, and the probe and the conductive element are electrically connected to each other.

[0009] According to some embodiments of the present invention, the conductive member has a first conductive channel that extends through both ends. A portion of the first conductive channel is located inside the inner extension section, and another portion of the first conductive channel is located inside the exposed section. Fluid in the flow channel can flow to the sensor through the first conductive channel.

[0010] According to some embodiments of this utility model, the sensor is a pressure sensor, which includes a main body and a probe connected to each other. The main body has a pressure-sensitive element, and the probe has a second conductive channel with two through ends. The two ends of the first conductive channel are respectively connected to the flow channel and the second conductive channel, so that the fluid can flow to the pressure-sensitive element through the first conductive channel and the second conductive channel.

[0011] According to some embodiments of the present invention, the sensor includes a probe, and the pipe assembly further includes a connector for fixing the conductive element and the probe together.

[0012] According to some embodiments of the present invention, the sensor includes a probe, and the pipe assembly further includes a first connecting block and a second connecting block, the first connecting block being connected to the probe, and the second connecting block being connected to the conductive element, wherein the first connecting block and the second connecting block are detachably connected.

[0013] According to some embodiments of the present invention, the pipe assembly further includes a sealing element, the sealing element being elastic, the pipe having an installation hole, the conductive element penetrating the sealing element, at least a portion of the sealing element being installed in the installation hole, and the sealing element being sealed to the installation hole.

[0014] According to some embodiments of the present invention, the outer surface of the tube includes a mounting plane, and the mounting hole is disposed on the mounting plane; and / or, the sealing element includes: a first sealing portion located outside the flow channel, the outer diameter of the first sealing portion being larger than the diameter of the mounting hole, the first sealing portion abutting against the outer surface of the tube and covering the edge of the mounting hole; a second sealing portion located inside the mounting hole, the outer peripheral surface of the second sealing portion abutting against the wall of the mounting hole; and a third sealing portion located inside the flow channel, the outer diameter of the third sealing portion being larger than the outer diameter of the mounting hole, the third sealing portion abutting against the inner surface of the tube and covering the edge of the mounting hole.

[0015] The vehicle according to a second aspect embodiment of the present invention includes a pipe assembly as described in the first aspect embodiment.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the pipe assembly according to the first embodiment of the present invention (sensors omitted).

[0019] Figure 2 for Figure 1 A cross-sectional view of the pipe assembly shown (sensors omitted);

[0020] Figure 3 This is a schematic diagram of the connection method between the conductive element and the sensor in the first embodiment;

[0021] Figure 4 This is a cross-sectional view of the pipe assembly according to the third embodiment of the present invention (sensors omitted).

[0022] Figure 5 This is a schematic diagram of the connection method between the conductive element and the sensor in the second embodiment of this utility model.

[0023] Reference numerals: 101-pipe assembly, 102-pipe, 103-flow channel, 104-transmitter, 105-seal, 106-mounting plane, 107-exposed section, 108-inner extension, 109-mounting hole, 110-sensor, 111-body, 112-probe, 113-connector, 114-first seal, 115-second seal, 116-third seal, 117-first connecting block, 118-second connecting block, 119-first conduction channel. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Figures 1 to 3 A pipe assembly 101 according to an embodiment of the present invention is shown. The pipe assembly 101 includes a pipe 102, a conductor 104, and a sensor 110. Figure 1 and Figure 2As shown, the pipe 102 has a flow channel 103 inside, within which fluid can flow. The pipe 102 can be a plastic pipe, a metal pipe, etc. A conductive member 104 is connected to the pipe 102 and passes through the side of the pipe 102. "The conductive member 104 passes through the side of the pipe 102" means that the conductive member 104 enters the interior of the pipe 102 from its outer circumferential surface. Figure 2 As shown, the conductive member 104 includes an inner extension 108 and an exposed extension 107. The inner extension 108 is located within the flow channel 103 and can contact the fluid within the flow channel 103, while the exposed extension 107 is located outside the flow channel 103. Figure 3 As shown, sensor 110 is located outside flow channel 103 and is detachably connected to exposed section 107 so that sensor 110 can measure parameters of the fluid within flow channel 103. For example, sensor 110 includes a body 111 and a probe 112 interconnected, with probe 112 detachably connected to exposed section 107.

[0029] The following describes how sensor 110 measures the parameters of the fluid within flow channel 103.

[0030] For example, in the first embodiment, the parameter to be measured for the fluid is its temperature. Sensor 110 is a temperature sensor, and the conductive element 104 is a heat conductor. Probe 112 is thermally connected to the conductive element 104. Specifically, the conductive element 104 can be made of a material with good thermal conductivity, such as copper or aluminum. The outer surface of probe 112 can directly contact the outer surface of conductive element 104, thus achieving a thermally conductive connection between them; alternatively, a heat-conducting object (such as a silicone sleeve, silicone pad, thermally conductive adhesive, etc.) can be provided between probe 112 and conductive element 104, and both probe 112 and conductive element 104 are in contact with this heat-conducting object, thus achieving a thermally conductive connection. Because the conductive element 104 is a heat conductor, it allows the fluid in the flow channel 103 to transfer heat to sensor 110, enabling sensor 110 to measure the temperature of the fluid in the flow channel 103.

[0031] In the first embodiment, both the inner extension 108 and the exposed extension 107 are closed. That is, as shown... Figure 3 As shown, the surface of the inner extension 108 has no openings, and the surface of the exposed extension 107 has no openings. In this way, fluid in the flow channel 103 cannot enter the interior of the conductor 104, and therefore cannot flow out to the outside of the pipe 102 through the conductor 104. Fluid will not leak to the outside of the pipe 102 through the conductor 104, and external environmental debris will not enter the flow channel 103 through the conductor 104. In some other embodiments not shown, to prevent fluid from leaking to the outside of the pipe 102 through the conductor 104, only the inner extension 108 or only the exposed extension 107 may be closed.

[0032] For example, in the second embodiment, the conductive member 104 has a first conductive channel 119 extending through both ends. A portion of the first conductive channel 119 is located inside the inner extension section 108, and the other portion is located inside the exposed section 107. Fluid in the flow channel 103 can flow to the sensor 110 through the first conductive channel 119. The fluid in the first conductive channel 119 is in contact with the fluid in the flow channel 103. By measuring the parameters of the fluid in the first conductive channel 119, the parameters of the fluid in the flow channel 103 can be indirectly measured. More specifically, the parameter to be measured for the fluid can be the fluid pressure, and the sensor 110 is a pressure sensor. In this case, the conductive member 104 has a first conductive channel 119 extending through both ends (e.g., Figure 4 (As shown). Sensor 110 includes a body 111 and a probe 112. The body 111 has a pressure-sensitive element and is connected to the end of probe 112 away from the conductor 104. The pressure-sensitive element is not shown; in some embodiments, the pressure-sensitive element may be a piezoresistive element. The probe 112 has a second conductive channel (not shown) extending through both ends. The two ends of the first conductive channel 119 are respectively connected to the flow channel 103 and the second conductive channel. For example, the bottom end of the first conductive channel 119 is connected to the flow channel 103, and the top end of the first conductive channel 119 is connected to the bottom end of the second conductive channel. A portion of the fluid can enter the first conductive channel 119 and the second conductive channel, so that the fluid in the flow channel 103 can flow to the pressure-sensitive element of the pressure sensor, and the pressure of the fluid in the flow channel 103 can be transmitted to the pressure-sensitive element of the pressure sensor. As the fluid pressure changes, the output signal of the pressure-sensitive element also changes, and the pressure sensor detects the fluid pressure value accordingly.

[0033] It should be noted that if the sensor 110 is removed when the conductive member 104 has the first conductive channel 119, the end of the first conductive channel 119 located outside the flow channel 103 should be immediately sealed with a plug or cover to prevent the fluid in the flow channel 103 from flowing out continuously.

[0034] For example, in some embodiments not shown, both the conductor 104 and the probe 112 are conductors. The conductor 104 may be made of metal, and the probe 112 and the conductor 104 are electrically connected. This design is suitable for situations where the sensor 110 determines fluid parameters using electrical parameters such as capacitance, inductance, and resistance. For example, if the parameter to be measured is the fluid level, the sensor 110 is a level sensor 110. As the fluid level in the pipe 102 changes, the length of the inner extension 108 of the conductor 104 submerged in the liquid changes, and the capacitance between the pipe 102 and the conductor 104 also changes (assuming the pipe 102 is also a conductor). The sensor 110 can determine the fluid level in the flow channel 103 based on the capacitance. To facilitate the determination of the capacitance, the conductor 104 and the probe 112 can be in contact with each other and be electrically connected. The sensor 110 is also electrically connected to the pipe 102. The probe 112 and the conductive element 104 can be in direct contact, thereby achieving an electrical connection between them; alternatively, a conductive component may be provided between the probe 112 and the conductive element 104, with both the probe 112 and the conductive element 104 in contact with this conductive component to achieve an electrical connection. When it is necessary to determine the parameters of the fluid using electrical parameters such as capacitance, inductance, and resistance, the fluid does not need to be in direct contact with the sensor 110; therefore, at least one of the inner extension 108 and the exposed extension 107 of the conductive element 104 is closed.

[0035] For this pipe assembly 101, when it is necessary to install the sensor 110 and measure the parameters of the fluid inside the flow channel 103, the user only needs to connect the probe 112 of the sensor 110 to the exposed section 107 of the conductor 104; it is not necessary to insert the probe 112 of the sensor 110 into the flow channel 103, nor is it necessary to connect the probe 112 of the sensor 110 to the pipe 102. When it is necessary to remove the sensor 110 (e.g., to replace the sensor 110), the user only needs to disconnect the probe 112 of the sensor 110 from the exposed section 107 of the conductor 104; it is not necessary to pull the probe 112 of the sensor 110 out of the pipe 102. Therefore, during the installation or removal of the sensor 110, the conductor 104 connected to the pipe 102 does not need to be moved; only the sensor 110 and the conductor 104 need to be connected or disconnected. During the installation or removal of sensor 110, there is less contact between tube 102 and sensor 110, making the installation and removal of sensor 110 more convenient, and tube 102 and sensor 110 are less likely to be damaged.

[0036] The structure of the pipe assembly 101 will be further described below.

[0037] like Figure 3As shown, the conductor 104 can be straight and elongated, acting as a probe. The probe 112 can also be elongated, in which case it also acts as a probe. In other embodiments not shown, the conductor 104 can be curved; or, the conductor 104 can be flexible, allowing the user to change its shape to adjust the position and / or angle of the sensor 110 relative to the tube 102.

[0038] like Figure 3 As shown, the pipe assembly 101 may further include a connector 113, where the outer surface of the probe 112 contacts the outer surface of the conductor 104. The connector 113 is used to fix the conductor 104 and the probe 112. Specifically, the connector can be a wire, cable tie, soft rubber sleeve, tape, etc. The connector 113 binds the exposed section 107 of the conductor 104 and the probe 112 together, thereby fixing the conductor 104 and the probe 112. Fixing the conductor 104 and the probe 112 in this way is relatively simple and low-cost. When it is necessary to remove the sensor 110, the connector 113 can be untied or cut. Figure 3 In this embodiment, the outer peripheral surface of probe 112 is in contact with the outer peripheral surface of conductive element 104. In other embodiments, "the outer surface of probe 112 is in contact with the outer surface of conductive element 104" can also mean that the end face of probe 112 is in contact with the end face of conductive element 104 (e.g.) Figure 5 (As shown).

[0039] The connection method between probe 112 and the exposed section 107 of conductor 104 is not limited to Figure 3 As shown. For example, as Figure 5 As shown, in the third embodiment, the pipe assembly 101 includes a first connecting block 117 and a second connecting block 118. The first connecting block 117 is connected to the probe 112, and the second connecting block 118 is connected to the conductor 104. The first connecting block 117 and the second connecting block 118 are detachably connected. The first connecting block 117 may be annular, with the probe 112 inserted into the center of the first connecting block 117. The first connecting block 117 clamps the probe 112, thereby fixing the probe 112 to the first connecting block 117. Similarly, the second connecting block 118 may also be annular, with the conductor 104 inserted into the center of the second connecting block 118. The second connecting block 118 clamps the conductor 104, thereby fixing the conductor 104 to the second connecting block 118.

[0040] The first connecting block 117 and the second connecting block 118 can be magnetically connected to each other. Accordingly, both the first connecting block 117 and the second connecting block 118 can be set as magnets. In this configuration, the connection and separation of the first connecting block 117 and the second connecting block 118 are relatively effortless, and the connection and separation between the probe 112 and the conductive element 104 are relatively simple.

[0041] Alternatively, the first connecting block 117 and the second connecting block 118 can be interlocked. Accordingly, both the first connecting block 117 and the second connecting block 118 are provided with interlocking structures (not shown). For example, the first connecting block 117 is provided with a hook, and the second connecting block 118 is provided with a corresponding interlocking hole or slot. The interlocking of the first connecting block 117 and the second connecting block 118 also improves the ease of assembly and disassembly between the probe 112 and the conductive element 104. Furthermore, when the first connecting block 117 and the second connecting block 118 are interlocked, the probe 112 and the conductive element 104 have good connection stability.

[0042] Alternatively, the first connecting block 117 and the second connecting block 118 are connected by screws (not shown). In this configuration, the probe 112 and the conductor 104 have good connection stability. Even if the pipe assembly 101 vibrates during operation, the probe 112 and the conductor 104 are not easily separated, thus ensuring that the sensor 110 can continuously measure the parameters of the fluid in the flow channel 103.

[0043] like Figure 3 As shown, the pipe assembly 101 may further include a seal 105, which is elastic. For example, the seal 105 may be made of a rubber material, thereby giving it good elasticity and durability. The pipe 102 is provided with a mounting hole 109, which is a through hole. At least a portion of the seal 105 is installed in the mounting hole 109, and the conductor 104 passes through the seal 105. The seal 105 is sealingly connected to the mounting hole 109. The seal 105 seals the gap between the mounting hole 109 and the conductor 104, preventing fluid leakage in the flow channel 103. More specifically, during the assembly of the pipe assembly 101, the seal 105 may be formed on the outside of the conductor 104 first, so that the seal 105 tightly wraps around the outer peripheral surface of the conductor 104, and then the seal 105 is connected to the pipe 102. Alternatively, the seal 105 may be connected to the pipe 102 first, and then the conductor 104 may be inserted into the seal 105.

[0044] like Figure 3As shown, the outer surface of the pipe 102 includes a mounting plane 106, and a mounting hole 109 is provided on the mounting plane 106. The mounting plane 106 is perpendicular to the axis of the mounting hole 109, so that the outer peripheral surface of the seal 105 can uniformly contact the wall of the mounting hole 109. On the one hand, it is relatively simple to open the mounting hole 109 on the mounting plane 106. Furthermore, the mounting plane 106 provides a flat mounting reference surface for the seal 105. When the seal 105 is pressed into the mounting hole 109, the planar structure makes the gap between the seal 105 and the wall of the mounting hole 109 uniform, avoiding excessively large gaps in some areas, thereby reducing the risk of fluid leakage.

[0045] like Figure 3 As shown, the seal 105 includes a first sealing portion 114, a second sealing portion 115, and a third sealing portion 116. These three sealing portions can be integrally formed, and each of them can be cylindrical. The first sealing portion 114 is located outside the flow channel 103, abuts against the outer surface of the tube 102, and covers the edge of the mounting hole 109. The second sealing portion 115 is located inside the mounting hole 109, and its outer peripheral surface abuts against the wall of the mounting hole 109. The outer diameter of the second sealing portion 115 is smaller than the outer diameter of the first sealing portion 114. The third sealing portion 116 is located inside the flow channel 103, and its outer diameter is larger than the outer diameter of the second sealing portion 115. The third sealing portion 116 abuts against the inner surface of the tube 102 and covers the edge of the mounting hole 109.

[0046] The seal 105 has a stepped structure. The first sealing part 114 is pressed against the outer surface of the pipe 102, completely covering the edge of the mounting hole 109 to prevent fluid leakage. The outer diameter of the second sealing part 115 matches the inner diameter of the mounting hole 109, and the two fit tightly together to prevent fluid leakage. The third sealing part 116 is pressed against the inner surface of the pipe 102, completely covering the edge of the mounting hole 109 to prevent fluid leakage. Therefore, the seal 105 in this embodiment has a good sealing effect on the mounting hole 109.

[0047] During vehicle assembly and testing, sensors may need to be installed on and removed from vehicle pipes multiple times. Therefore, to reduce the risk of damage to sensors and vehicle pipes, the aforementioned pipe assembly 101 can be used in vehicles. For example, as part of the vehicle's cooling system, pipe 102 delivers coolant, and sensor 110 detects coolant parameters. Alternatively, as part of the vehicle's refrigeration system, pipe 102 delivers refrigerant, and sensor 110 detects refrigerant parameters. Or, in a gasoline or hybrid vehicle, pipe assembly 101 can be part of the fuel delivery system, pipe 102 delivers fuel, and sensor 110 detects fuel parameters. Or, as part of the vehicle's braking system, pipe 102 delivers brake fluid, and sensor 110 detects brake fluid parameters. The specific locations and functions of pipe assembly 101 within vehicles are not listed here.

[0048] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A pipe assembly, characterized in that, include: The tube has a flow channel inside; A conductive element connected to the pipe, the conductive element comprising an inner extension section and an outer exposed section, the inner extension section being located inside the flow channel and the outer exposed section being located outside the flow channel; A sensor is located outside the flow channel and is detachably connected to the exposed section so that the sensor can measure parameters of the fluid within the flow channel.

2. The pipe assembly according to claim 1, characterized in that, At least one of the inner extension and the exposed extension is closed.

3. The pipe assembly according to claim 2, characterized in that, The sensor includes a probe, which is a temperature sensor, and the conductive element is a heat conductor, which is thermally connected to the probe. Alternatively, the sensor may include a probe, both of which are conductors, and the probe and the conductor are electrically connected to each other.

4. The pipe assembly according to claim 1, characterized in that, The conductive member has a first conductive channel that extends through both ends. A portion of the first conductive channel is located inside the inner extension section, and another portion of the first conductive channel is located inside the exposed section. Fluid in the flow channel can flow to the sensor through the first conductive channel.

5. The pipe assembly according to claim 4, characterized in that, The sensor is a pressure sensor, which includes a main body and a probe connected to each other. The main body has a pressure-sensitive element, and the probe has a second conductive channel with two through ends. The two ends of the first conductive channel are respectively connected to the flow channel and the second conductive channel, so that the fluid can flow to the pressure-sensitive element through the first conductive channel and the second conductive channel.

6. The pipe assembly according to claim 1, characterized in that, The sensor includes a probe, and the pipe assembly further includes a connector for fixing the conductive element and the probe together.

7. The pipe assembly according to claim 1, characterized in that, The sensor includes a probe, and the pipe assembly further includes a first connecting block and a second connecting block, the first connecting block being connected to the probe and the second connecting block being connected to the conductive element, the first connecting block and the second connecting block being detachably connected.

8. The pipe assembly according to claim 1, characterized in that, The pipe assembly further includes a seal that is elastic, the pipe having a mounting hole, the conductive element passing through the seal, at least a portion of the seal being installed in the mounting hole, and the seal being sealed to the mounting hole.

9. The pipe assembly according to claim 8, characterized in that, The outer surface of the tube includes a mounting plane, and the mounting hole is disposed on the mounting plane; And / or, The sealing element includes: A first sealing part is located outside the flow channel. The outer diameter of the first sealing part is larger than the diameter of the mounting hole. The first sealing part abuts against the outer surface of the tube and covers the edge of the mounting hole. The second sealing part is located inside the mounting hole, and the outer peripheral surface of the second sealing part abuts against the hole wall of the mounting hole; The third sealing part is located inside the flow channel. The outer diameter of the third sealing part is larger than the outer diameter of the mounting hole. The third sealing part abuts against the inner surface of the tube and covers the edge of the mounting hole.

10. A vehicle, characterized in that, Includes the pipe assembly as described in any one of claims 1 to 9.

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