Ventilation pipe assembly for transmission and vehicle with ventilation pipe assembly

Abstract

The utility model discloses a breather pipe assembly for a transmission and a vehicle with the breather pipe assembly, the breather pipe assembly comprises a screw plug head, a valve core, a bent pipe and a pressing sleeve, and the middle part of the screw plug head is provided with a vent hole; one end of the valve element is rotationally connected to the inner circumferential wall of the ventilation hole, and the valve element communicates with the ventilation hole. The air outlet direction of the bent pipe can be adjusted, and the bent pipe is arranged at the other end of the valve element and communicates with the valve element. The pressing sleeve is arranged on the outer side of the bent pipe, and the pressing sleeve is detachably connected with the valve element so that the bent pipe can be limited to the valve element. The bent pipe is arranged on the valve element, and the air outlet direction of the bent pipe can be adjusted, so that the breather pipe assembly can be connected with different structures in the using process. In addition, the air outlet direction of the bent pipe can be adjusted according to requirements, so that the bent pipe can be connected with various structures of different models, the breather pipe assembly can be used in various vehicle models, and the cost of the vehicle in the production and assembly process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transmissions, in particular to a vent pipe assembly for a transmission and a vehicle having the same. Background Art

[0002] In the prior art, a pipe structure is provided on the transmission for ventilation. Due to the rigid connection, the pipe structure cannot be applied to other structures after being arranged, and the pipe structure needs to be rigidly bent. This will affect the performance of the pipe structure. At the same time, the pipe structure is often not applicable to different models, so different models need to be provided with pipe structures of different structures for connection, which increases the overall production cost of the vehicle. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a breather pipe assembly for a transmission, which has high applicability so as to be assembled with a variety of structures, and due to its high applicability, can be used in a variety of vehicle models to reduce the production cost of the vehicle.

[0004] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the ventilator assembly as shown above.

[0005] According to the embodiment of the utility model, the breather pipe assembly for the transmission includes: a screw plug head, a valve core, a bent pipe and a compression sleeve, wherein a vent hole is provided in the middle of the screw plug head; one end of the valve core is rotatably connected to the inner peripheral wall of the vent hole, and the valve core is communicated with the vent hole; the air outlet direction of the bent pipe is adjustable, the bent pipe is arranged at the other end of the valve core, and the bent pipe is communicated with the valve core; the compression sleeve is arranged on the outside of the bent pipe, and the compression sleeve is detachably connected to the valve core to limit the bent pipe on the valve core.

[0006] According to the vent pipe assembly for the transmission of the embodiment of the utility model, a bend is provided on the valve core, and the air outlet direction of the bend can be adjusted, so that the vent pipe assembly can be connected with different structures during use, so that the applicability of the vent pipe assembly during use is improved. At the same time, during the use of the vent pipe assembly, the air outlet direction of the bend can be adjusted according to demand, so that the bend can be connected with a variety of different types of structures, so that the vent pipe assembly can be used in a variety of vehicle models, so that the vent pipe assembly has a higher applicability, so that the cost of the vehicle during the production and assembly process is reduced.

[0007] In some embodiments, the compression sleeve includes: a sleeve body and a limiting flange, the sleeve body is sleeved on the outer side of the valve core, and the sleeve body is fixedly connected to the valve core; the limiting flange is connected to the side of the sleeve body away from the valve core, and the limiting flange extends toward the center of the bent pipe, and the limiting flange is limited to the outer side of the bent pipe.

[0008] In some embodiments, a first locking portion is provided on the limiting flange, and a second locking portion is provided on the outer side of the bent pipe, and the first locking portion and the second locking portion are locked to each other.

[0009] In some embodiments, the first locking portion is a locking groove, and the locking grooves are multiple and circumferentially arranged. The second locking portion is a locking protrusion, and the locking protrusions are multiple and circumferentially arranged. The locking grooves and the locking protrusions are locked to each other in a limited manner.

[0010] In some embodiments, a first connection portion is provided on the inner side of the sleeve, a second connection portion is provided on the outer side of the valve core, and the first connection portion and the second connection portion are threadedly connected.

[0011] In some embodiments, the bent pipe includes: a tube body, a first connecting flange and a second connecting flange, the first connecting flange is arranged on the outer side of the end of the tube body and the first connecting flange extends along the radial direction of the tube body; the second connecting flange is arranged at the end of the first connecting flange, and the second connecting flange extends toward the direction of the valve core, and the valve core is limited to the inner side of the second connecting flange.

[0012] In some embodiments, it further includes: a first sealing ring, a first sealing groove is provided on the valve core, the first sealing ring is arranged in the first sealing groove, and the first sealing ring is arranged to abut against the second connecting flange.

[0013] In some embodiments, a third connection portion is provided at the other end of the valve core, and a fourth connection portion is provided inside the screw plug head, and the third connection portion and the fourth connection portion are threadedly connected; wherein, the third connection portion is an external thread of a sealing tube, and the fourth connection portion is an internal thread of a sealing tube, and the external thread of the sealing tube is threadedly connected to the internal thread of the sealing tube.

[0014] In some embodiments, it also includes: a second sealing ring, a second sealing groove is also provided on the valve core, the second sealing ring is arranged in the second sealing groove, and the second sealing ring is arranged to abut against the screw plug head.

[0015] In some embodiments, it also includes: a boss, the boss is arranged on the outer side of the plug head, and a fifth connecting part is arranged on the inner side of the boss, and a sixth connecting part is arranged on the outer side of the plug head, and the boss and the plug head are fixedly connected with the sixth connecting part through the fifth connecting part.

[0016] A vehicle according to an embodiment of the utility model includes: the breather pipe assembly for a transmission as described above.

[0017] According to the vehicle of the embodiment of the utility model, since the vent pipe assembly as shown above is provided in the vehicle, a bend pipe is provided on the valve core, and the air outlet direction of the bend pipe can be adjusted, so that the vent pipe assembly can be connected with different structures during use, so that the applicability of the vent pipe assembly during use is improved. At the same time, during the use of the vent pipe assembly, the air outlet direction of the bend pipe can also be adjusted according to demand, so that the bend pipe can be connected with a variety of different types of structures, so that the vent pipe assembly can be used in a variety of vehicle models, so that the applicability of the vent pipe assembly is higher, so that the cost of the vehicle in the production and assembly process is reduced. Not only that, when it is necessary to use a leak tester for detection, since the leak tester quick plug connector is provided with a sealing tube external thread, it can be matched with the sealing tube internal thread provided on the screw plug head, while realizing the assembly connection, it can also simplify the process and improve the use efficiency. At the same time, since the sealing tube threaded connection has a high sealing performance, the detection result of the leak tester during use is more accurate and reliable.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a structural schematic diagram of a ventilating pipe assembly according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram of the structure of part A;

[0022] Reference numerals:

[0023] The vent pipe assembly 10,

[0024] Screw plug 100, vent hole 101, fourth connection part 102, sixth connection part 103,

[0025] Valve core 200, second connection part 201, first sealing groove 202, third connection part 203, second sealing groove 204,

[0026] Bend pipe 300, second locking portion 301, pipe body 310, first connecting flange 311, second connecting flange 312,

[0027] The compression sleeve 400, the sleeve body 410, the first connecting portion 411, the limiting flange 420, the first locking portion 421,

[0028] The first sealing ring 500,

[0029] The second sealing ring 600,

[0030] Boss 700 , fifth connecting portion 701 . DETAILED DESCRIPTION

[0031] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0032] Reference below Figure 1-Figure 2 A breather pipe assembly 10 for a transmission according to an embodiment of the present utility model is described, comprising a screw plug head 100 , a valve core 200 , an elbow 300 and a compression sleeve 400 .

[0033] Specifically, a vent hole 101 is provided in the middle of the screw plug head 100; one end of the valve core 200 is rotatably connected to the inner wall of the vent hole 101, and the valve core 200 is communicated with the vent hole 101; the air outlet direction of the bent pipe 300 is adjustable, the bent pipe 300 is provided at the other end of the valve core 200, and the bent pipe 300 is communicated with the valve core 200; the clamping sleeve 400 is provided on the outside of the bent pipe 300, and the clamping sleeve 400 is detachably connected to the valve core 200 to restrict the bent pipe 300 on the valve core 200.

[0034] That is to say, during the ventilation process of the transmission, it is suitable to be connected with a vent pipe assembly 10, and the vent pipe assembly 10 is connected to the ventilation end of the transmission. In this way, a connecting device can be provided at the ventilation end, such as a screw plug 100, so that the vent pipe assembly 10 is constructed at the ventilation end to realize the construction and assembly of the vent pipe assembly 10, and a valve core 200 is suitable to be connected to the screw plug 100, so that the valve core 200 can be opened or closed according to the control use, so as to realize the construction and use of the vent pipe assembly 10. On the other side of the valve core 200, a bend 300 is provided, and the bend 300 is suitable for adjusting the direction of the air outlet according to the needs, so that the vent pipe assembly 10 can be connected with components of different forms, so that the use of the vent pipe assembly 10 has higher applicability, so as to reduce the production cost of the vehicle.

[0035] In order to make the assembly of the elbow 300 more reliable and improve the stability of the structural connection, a compression sleeve 400 is also suitable for being provided. The compression sleeve 400 is suitable for being detachably connected to the valve core 200 so that the compression sleeve 400 can be connected to a suitable position on the valve core 200, and the compression sleeve 400 can also be arranged relative to the elbow 300 so that the compression sleeve 400 can fix and restrict the elbow 300 on the valve core 200 during the fixing process, so that the elbow 300 can be subsequently connected and used according to the design, so that the reliability of the use of the ventilation pipe assembly 10 is improved.

[0036] Moreover, in order to enable the elbow 300 to realize the function of adjustable air outlet direction, it is suitable to construct the elbow 300 into a folding elastic elbow so that the air outlet direction of the elbow 300 can be adjusted according to user needs. Since the elbow 300 is restricted to the valve core 200 by the compression sleeve 400, when the use function of the ventilating pipe assembly 10 needs to be adjusted, for example, when the position of the structure connected to the elbow 300 is adjusted, it is suitable to release the connection restriction between the elbow 300 and the valve core 200 by the compression sleeve 400, and then adjust the air outlet direction of the elbow 300 to a suitable position to meet the subsequent use requirements, and then use the compression sleeve 400 to restrict the elbow 300 and the valve core 200, so that the air flow can enter the elbow 300 after passing through the valve core 200 for circulation. In this way, when it is necessary to be applicable to different models, it is suitable to adjust the air outlet direction of the elbow 300 to achieve applicability adjustment for different models, so that the ventilating pipe assembly 10 can be applicable to more models to improve applicability.

[0037] According to the vent pipe assembly 10 for a transmission of the embodiment of the utility model, a bend pipe 300 is provided on the valve core 200. Since the air outlet direction of the bend pipe 300 can be adjusted, the vent pipe assembly 10 can be connected to different structures during use, so that the applicability of the vent pipe assembly 10 during use is improved. At the same time, during the use of the vent pipe assembly 10, the air outlet direction of the bend pipe 300 can also be adjusted according to demand, so that the bend pipe 300 can be connected to a variety of different types of structures, so that the vent pipe assembly 10 can be used in a variety of vehicle models, so that the vent pipe assembly 10 has a higher applicability, so that the cost of the vehicle during the production and assembly process is reduced.

[0038] In some embodiments, the compression sleeve 400 includes: a sleeve body 410 and a limiting flange 420, the sleeve body 410 is sleeved on the outside of the valve core 200, and the sleeve body 410 is fixedly connected to the valve core 200; the limiting flange 420 is connected to the side of the sleeve body 410 away from the valve core 200, and the limiting flange 420 extends toward the center of the bent pipe 300, and the limiting flange 420 is limited to the outside of the bent pipe 300.

[0039] That is to say, the compression sleeve 400 is suitable to include: a sleeve body 410 and a limiting flange 420, and the sleeve body 410 is suitable to be covered on the outside of the valve core 200 and connected to the valve core 200, so that the compression sleeve 400 can be connected to the valve core 200, so that the limiting flange 420 arranged on the side away from the valve core 200 can be arranged relative to the elbow 300, so that when the sleeve body 410 is connected to the valve core 200, it can drive the limiting flange 420 to move, so that the elbow 300 can be restricted on the valve core 200 through the limiting flange 420, so that when the airflow passes through the valve core 200 for subsequent circulation, it can actually convey the airflow to the designated position through the elbow 300 for subsequent use, thereby making the ventilation use of the ventilation pipe assembly 10 have higher applicability, thereby improving the applicability of the ventilation pipe assembly 10.

[0040] In some embodiments, a first locking portion 421 is provided on the limiting flange 420, and a second locking portion 301 is provided on the outer side of the elbow 300, and the first locking portion 421 and the second locking portion 301 are locked with each other. That is to say, during the connection process between the compression sleeve 400 and the valve core 200, the limiting flange 420 on the compression sleeve 400 is provided with a first locking portion 421, and the first locking portion 421 is suitable for mutual locking with the second locking portion 301 on the elbow 300, so that the interference setting between the compression sleeve 400 and the elbow 300 is more reliable, so that the compression sleeve 400 can better fix the elbow 300 on the outer side of the valve core 200, so as to achieve the performance of the ventilation pipe assembly 10 in conveying the airflow to the designated position.

[0041] In some specific embodiments, the first locking portion 421 is a locking groove, and the locking groove is arranged in a plurality in the circumferential direction; the second locking portion 301 is a locking protrusion, and the locking protrusion is arranged in a plurality in the circumferential direction; the locking groove and the locking protrusion are locked to each other. In other words, by arranging the first locking portion 421 and the second locking portion 301 in a plurality arranged in the circumferential direction, the locking effect is improved when the first locking portion 421 and the second locking portion 301 are locked, so that the compression sleeve 400 can be more reliably restricted to the outside of the elbow 300, so that the structural setting of the ventilation pipe assembly 10 is more reliable. At the same time, the first locking portion 421 and the second locking portion 301 are arranged in the circumferential direction, so that the locking reliability between the compression sleeve 400 and the elbow 300 is higher. At the same time, the first locking portion 421 and the second locking portion 301 are respectively configured as a locking protrusion and a locking groove, so that the locking protrusion can be appropriately embedded in the locking groove to achieve fixed locking between the compression sleeve 400 and the elbow 300.

[0042] In some embodiments, a first connection portion 411 is provided on the inner side of the sleeve 410, and a second connection portion 201 is provided on the outer side of the valve core 200, and the first connection portion 411 is threadedly connected to the second connection portion 201. It can be understood that by providing the first connection portion 411 on the inner side of the sleeve 410 so that the first connection portion 411 is suitable for connecting with the second connection portion 201 on the outer side of the valve core 200, not only can the assembly process between the compression sleeve 400 and the valve core 200 be simplified, but also the compression sleeve 400 can be more reliably arranged on the outer side of the valve core 200, so that the elbow 300 is restricted on the valve core 200 to achieve the circulation of airflow.

[0043] In some embodiments, the bent pipe 300 includes: a tube body 310, a first connecting flange 311 and a second connecting flange 312, the first connecting flange 311 is arranged on the outer side of the end of the tube body 310 and the first connecting flange 311 extends along the radial direction of the tube body 310; the second connecting flange 312 is arranged at the end of the first connecting flange 311, and the second connecting flange 312 extends toward the direction of the valve core 200, and the valve core 200 is limited to the inner side of the second connecting flange 312.

[0044] That is to say, the elbow 300 is suitable for including a tube body 310, a first connection flange 311 and a second connection flange 312, and the tube body 310 is suitable for guiding the airflow. During the use of the vent pipe assembly 10, the structural setting form of the tube body 310 can be adjusted according to the needs, so that the airflow entering the elbow 300 can be discharged according to the structure of the tube body 310, so as to be transferred to the designated position for subsequent work. On one side of the tube body 310, a first connection flange 311 is suitable for being constructed, and the first connection flange 311 is suitable for limiting the connection position of the tube body 310, and a second connection flange 312 is provided on the outside of the first connection flange 311, so that the second connection flange 312 is suitable for being limited to the outside of the valve body connection end, so that the gas can better pass through the valve core 200 into the tube body 310 for circulation. At the same time, since the second connecting flange 312 is used to cooperate with the valve core 200, the connection process between the bent pipe 300 and the valve core 200 is simplified, and the assembly connection between the bent pipe 300 and the valve core 200 is more reliable, so that the air flow can flow as designed, so that the ventilation pipe assembly 10 can be designed to transfer the air flow to a designated position for subsequent use, thereby improving the applicability of the ventilation pipe assembly 10.

[0045] In some embodiments, the vent assembly 10 further includes: a first sealing ring 500 , a first sealing groove 202 is provided on the valve core 200 , the first sealing ring 500 is disposed in the first sealing groove 202 , and the first sealing ring 500 is disposed in contact with the second connecting flange 312 .

[0046] In this way, a first sealing ring 500 is further provided between the elbow 300 and the valve core 200. The first sealing ring 500 is assembled and connected through the first sealing groove 202 so that the first sealing ring 500 is suitable for improving the sealing between the valve core 200 and the elbow 300 to prevent the air flow from flowing out from the gap between the valve core 200 and the elbow 300, thereby improving the performance of the ventilation pipe assembly 10.

[0047] In some embodiments, the other end of the valve core 200 is provided with a third connection part 203, and the interior of the screw plug head 100 is provided with a fourth connection part 102, and the third connection part 203 and the fourth connection part 102 are threadedly connected; wherein, the third connection part 203 is an external thread of the sealing tube, and the fourth connection part 102 is an internal thread of the sealing tube, and the external thread of the sealing tube is threadedly connected with the internal thread of the sealing tube. It can be understood that the valve core 200 can be threadedly connected with the fourth connection part 102 provided inside the screw plug head 100 through the third connection part 203, so that the assembly process between the valve core 200 and the screw plug head 100 is simplified, thereby improving the assembly efficiency. At the same time, when it is necessary to connect with the quick plug connector of the leak tester, the valve core 200 can be removed from the screw plug head 100, and the quick plug connector of the leak tester can be connected with the screw plug head 100, so that the airflow can pass through the screw plug head 100 into the leak tester for detection, so as to make the use process of the vent assembly 10 simpler.

[0048] In some specific embodiments, the third connection part 203 can be a sealing tube external thread, and the fourth connection part 102 can be a sealing tube internal thread, and the sealing tube external thread is threadedly connected with the sealing tube internal thread. That is to say, when the valve core 200 is connected to the screw plug head 100, it is suitable to provide a sealing tube external thread on the valve core 200, so that the sealing tube external thread can be connected with the sealing tube internal thread provided on the valve core 100. While realizing the threaded connection, it will also simplify the assembly process and improve the assembly efficiency. At the same time, when it is necessary to connect with the quick plug connector of the leak tester, since the sealing tube external thread is provided on the quick plug connector of the leak tester, it can be connected with the sealing tube internal thread provided on the screw plug head 100, which is not only convenient for assembly and connection, but also has a higher sealing performance after the connection, so that the leak tester can better detect the transmission and improve the detection accuracy.

[0049] In some embodiments, the vent assembly 10 further includes: a second sealing ring 600, a second sealing groove 204 is further provided on the valve core 200, the second sealing ring 600 is provided in the second sealing groove 204, and the second sealing ring 600 is provided in abutment with the screw plug 100. It can be understood that by providing the second sealing ring 600 between the valve core 200 and the screw plug 100, the second sealing ring 600 is suitable for improving the connection sealing between the valve core 200 and the screw plug 100, so as to prevent the air flow from flowing out through the gap between the valve core 200 and the screw plug 100, so as to improve the air tightness of the vent assembly 10. At the same time, the second sealing groove 204 can provide a position for the construction of the second sealing ring 600, so that the second sealing ring 600 can be assembled between the valve core 200 and the screw plug 100 according to the design, so that the second sealing ring 600 can better improve the structural sealing of the vent assembly 10, so as to improve the performance of the vent assembly 10.

[0050] In some embodiments, the vent assembly 10 further includes: a boss 700, the boss 700 is disposed on the outer side of the screw plug 100, and a fifth connection portion 701 is disposed on the inner side of the boss 700, and a sixth connection portion 103 is disposed on the outer side of the screw plug 100, and the boss 700 and the screw plug 100 are fixedly connected to each other through the fifth connection portion 701 and the sixth connection portion 103. It can be understood that during the connection process of the vent assembly 10, it is also suitable to construct a boss 700 so that the boss 700 is connected to the ventilation end, so that the screw plug 100 in the vent assembly 10 is suitable for connecting with the boss 700 to realize the assembly of the vent assembly 10, so that the airflow can flow along the vent assembly 10 as designed, thereby improving the performance of the vent assembly 10. At the same time, in order to make the assembly connection between the boss 700 and the screw plug head 100 more reliable, it is also suitable to respectively provide a fifth connection part 701 and a sixth connection part 103 on the boss 700 and the screw plug head 100, so as to realize the assembly connection between the boss 700 and the screw plug head 100 by connecting the fifth connection part 701 and the sixth connection part 103, and to simplify the assembly process and improve the assembly efficiency. After the fifth connection part 701 and the sixth connection part 103 are used for assembly connection, it is also suitable to apply a sealant to seal the fifth connection part 701 and the sixth connection part 103, so as to make the connection between the fifth connection part 701 and the sixth connection part 103 more reliable, and also have higher sealing performance, so as to avoid the escape of airflow and improve the performance of the ventilating pipe assembly 10.

[0051] A vehicle according to an embodiment of the utility model includes: the above-mentioned breather pipe assembly 10 for a transmission.

[0052] In this way, since the vent pipe assembly 10 as shown above is provided in the vehicle, and a bend pipe 300 is provided on the valve core 200, since the air outlet direction of the bend pipe 300 can be adjusted, the vent pipe assembly 10 can be connected to different structures during use, so that the applicability of the vent pipe assembly 10 during use is improved. At the same time, during the use of the vent pipe assembly 10, the air outlet direction of the bend pipe 300 can also be adjusted according to demand, so that the bend pipe 300 can be connected to a variety of different types of structures, so that the vent pipe assembly 10 can be used in a variety of vehicle models, so that the applicability of the vent pipe assembly 10 is higher, and the cost of the vehicle during the production and assembly process is reduced. Not only that, when a leak tester is needed for testing, since the leak tester quick-plug connector is provided with an external thread of a sealing tube, it can cooperate with the internal thread of a sealing tube provided on the screw plug head 100, while realizing the assembly connection, it can also simplify the process and improve the efficiency of use. At the same time, since the sealing pipe threaded connection has a higher sealing performance, the detection results of the leak tester during use are more accurate and reliable.

[0053] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A breather pipe assembly for a transmission, characterized in that: include: A screw plug head, wherein a vent hole is provided in the middle of the screw plug head; A valve core, one end of which is rotatably connected to the inner peripheral wall of the vent hole, and the valve core is in communication with the vent hole; An elbow, the air outlet direction of the elbow is adjustable, the elbow is arranged at the other end of the valve core, and the elbow is connected to the valve core; A compression sleeve is arranged on the outside of the bent pipe, and the compression sleeve is detachably connected to the valve core so that the bent pipe can be restricted on the valve core.

2. The breather pipe assembly for a transmission according to claim 1, characterized in that: The compression sleeve comprises: A sleeve body, wherein the sleeve body is sleeved on the outer side of the valve core and the sleeve body is fixedly connected to the valve core; A limiting flange is connected to a side of the sleeve body away from the valve core, and the limiting flange extends toward the center of the elbow, and the limiting flange is limited to the outside of the elbow.

3. The breather pipe assembly for a transmission according to claim 2, characterized in that: A first locking portion is provided on the limiting flange, and a second locking portion is provided on the outer side of the bent pipe, and the first locking portion and the second locking portion are locked with each other.

4. The breather pipe assembly for a transmission according to claim 3, characterized in that: The first locking portion is a locking groove, and the locking grooves are multiple and circumferentially arranged. The second locking portion is a locking protrusion, and the locking protrusions are multiple and circumferentially arranged. The locking grooves and the locking protrusions are locked to each other in a limited manner.

5. The breather pipe assembly for a transmission according to claim 2, characterized in that: A first connection portion is provided on the inner side of the sleeve body, a second connection portion is provided on the outer side of the valve core, and the first connection portion and the second connection portion are threadedly connected.

6. The breather pipe assembly for a transmission according to claim 1, characterized in that: The elbow comprises: tube body; A first connecting flange, which is arranged on the outer side of the end of the tube body and extends along the radial direction of the tube body; The second connecting flange is arranged at the end of the first connecting flange, and the second connecting flange extends toward the valve core, and the valve core is restricted to the inner side of the second connecting flange.

7. The breather pipe assembly for a transmission according to claim 6, characterized in that: Also includes: A first sealing ring, a first sealing groove is provided on the valve core, the first sealing ring is arranged in the first sealing groove, and the first sealing ring is arranged to abut against the second connecting flange.

8. The breather pipe assembly for a transmission according to claim 1, characterized in that: The other end of the valve core is provided with a third connection part, the interior of the screw plug head is provided with a fourth connection part, and the third connection part and the fourth connection part are threadedly connected; Wherein, the third connection part is an external thread of a sealing tube, the fourth connection part is an internal thread of a sealing tube, and the external thread of the sealing tube is threadedly connected with the internal thread of the sealing tube.

9. The breather pipe assembly for a transmission according to claim 1, characterized in that: Also includes: A second sealing ring, wherein the valve core is further provided with a second sealing groove, the second sealing ring is arranged in the second sealing groove, and the second sealing ring is arranged to abut against the screw plug head; and / or A boss is arranged on the outer side of the plug head, and a fifth connecting portion is arranged on the inner side of the boss, a sixth connecting portion is arranged on the outer side of the plug head, and the boss and the plug head are fixedly connected with the sixth connecting portion through the fifth connecting portion.

10. A vehicle, characterized in that: include: A breather pipe assembly for a transmission as claimed in any one of claims 1 to 9.

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