Drain valve and vehicle having such a drain valve

Abstract

The utility model provides a kind of drain valve, it includes: valve shell, it has inlet and the water outlet located in the lower of the valve shell;Valve seat, it is fixedly connected with the valve shell below the valve shell, and floating space is formed between the valve seat support surface of the valve seat and the water outlet;Floating member, it has upper surface and lower surface, the floating member is arranged in the floating space and has back position and sealing position;Wherein, the floating member is configured, in the back position, the lower surface of the floating member falls on the valve seat support surface, and there is gap between the upper surface of the floating member and water outlet;Wherein, the floating member is configured, can float to the sealing position, and in the sealing position, the upper surface of the floating member is sealed to the water outlet.This utility model is also related to a kind of vehicles with such drain valve.

Description

Technical Field

[0001] This utility model relates to the field of drain valves, and more particularly to a floating-sealed normally open drain valve for use in automobile bodies. Furthermore, this utility model relates to a vehicle having such a drain valve. Background Technology

[0002] In existing technologies, to achieve drainage functionality in vehicle doors or body structures, drainage channels are often designed in the lower part of the door or side skirts to guide rainwater, wash water, or residual water on the windows to the outside of the vehicle. These drainage systems typically include drain pipes installed inside the body sheet metal structure and outlets that connect to the outside of the vehicle. Check valves, such as umbrella valves, are often installed at the outlets to prevent external water from flowing back into the vehicle body.

[0003] The most widely used solution currently is the normally closed drain valve, where the valve plate remains closed when there is no water accumulation. Only when the water volume in the drain pipe reaches a certain level, generating sufficient water pressure, does the valve plate open to drain water. While this type of structure can achieve unidirectional drainage to some extent, it also has significant drawbacks. Specifically, normally closed drain valves have a noticeable delay in drainage; a sufficient liquid level must accumulate in the drain channel to generate the opening pressure, which is not conducive to rapid drainage or maintaining a dry environment inside the vehicle.

[0004] Therefore, there is an urgent need for a drainage valve structure that can ensure unidirectional drainage while achieving rapid response and good sealing performance, so as to improve the vehicle body drainage efficiency, reduce the potential corrosion risk to the vehicle body structure and internal components caused by water accumulation, and thus improve the reliability and durability of the whole vehicle. Utility Model Content

[0005] The first aspect of this utility model provides a drain valve, comprising: a valve housing having an inlet and an outlet located below the valve housing; a valve seat fixedly connected to the valve housing below the valve housing, forming a floating space between the valve seat support surface and the outlet; and a floating member having an upper surface and a lower surface, the floating member being arranged in the floating space and having a retracted position and a sealed position; wherein, in the retracted position, the lower surface of the floating member rests against the valve seat support surface, and a gap exists between the upper surface of the floating member and the outlet; wherein, the floating member is configured to float to the sealed position, and in the sealed position, the upper surface of the floating member seals against the outlet. This realizes a normally open drain valve, and the drain valve can automatically close, for example, when wading through water.

[0006] According to the drain valve of the first aspect, a downwardly protruding bulge is constructed on the bottom side of the floating member, and in the retracted position of the floating member, the bulge is located in the bottom opening of the valve seat support surface of the valve seat. This ensures that the floating member floats stably.

[0007] In the first aspect described above, preferably, in the transverse cross-section of the floating member, the contour of the protrusion gradually tapers away from the lower surface. Thus, when the floating member falls back from the sealed position, the gradually tapering structure of the protrusion guides it, allowing the protrusion to reliably fall back into the bottom opening.

[0008] In the first aspect described above, preferably, the periphery of the floating member has a guide profile, and the guide strip extending vertically from the valve seat and / or the valve seat sidewall restricts the guide profile of the floating member, wherein the guide profile of the floating member is capable of moving up and down along the guide strip and / or the valve seat sidewall. This allows the floating member to move along a predetermined path.

[0009] In the first aspect described above, preferably, the guide strip extends vertically on the side wall of the valve seat, and a sliding groove for guidance is formed in the floating member, the sliding groove engaging with the guide strip, wherein the sliding groove of the floating member is capable of moving up and down along the guide strip. This allows the floating member to move along a predetermined path.

[0010] In the first aspect described above, preferably, the valve housing has a valve housing body and further includes: an inlet seal forming the opening edge of the inlet; and / or an outlet seal forming the opening edge of the outlet. This allows for the use of suitable materials according to the functional requirements of each component of the valve housing.

[0011] In the first aspect described above, preferably, the valve housing body, the inlet seal, and / or the outlet seal are integrally molded using a two-color injection molding process, wherein the valve housing body is made of rigid plastic, and the inlet seal and / or the outlet seal is made of silicone. This allows for rapid and cost-effective manufacturing of the valve housing while ensuring the functionality of each component.

[0012] In the first aspect described above, preferably, the valve body has a toothed structure at the location where it connects with the inlet seal and / or the outlet seal, and the inlet seal and / or the outlet seal has a toothed structure that engages with it. This ensures a secure connection between the valve body and the inlet seal and / or the outlet seal.

[0013] In the first aspect described above, preferably, the side portion of the valve housing has a snap-fit ​​protrusion and a stop portion, and the valve seat sidewall has a snap-fit ​​groove that mates with the snap-fit ​​protrusion, wherein the snap-fit ​​protrusion is inserted into the snap-fit ​​groove, and the stop portion abuts against the upper end of the valve seat sidewall. This facilitates a secure connection between the valve housing and the valve seat, forming a floating space.

[0014] In the first aspect described above, preferably, the valve seat sidewall is provided with at least a pair of adjacent through grooves, the through grooves extending downward from the upper end of the valve seat sidewall to above the valve seat support surface, wherein the through grooves are respectively located on both sides of the snap-fit ​​groove, and wherein the through grooves communicate with the gap. This facilitates easier engagement between the valve body and the valve seat, and provides an additional drainage path.

[0015] In the first aspect described above, preferably, the upper surface of the floating member is configured as a sealing plane, and the opening edge of the outlet is configured to lie within a plane. This enables a tight seal between the sealing surface and the outlet.

[0016] In the first aspect described above, preferably, the upper surface of the floating element is constructed as a sealing spherical surface or a sealing conical surface, and the opening edge of the outlet is constructed as a matching circle. This improves the self-adaptability of the sealing surface and the tolerance of the sealing fit, especially when the floating element is not horizontally floating, it can still effectively achieve a seal, thereby improving the sealing reliability and environmental adaptability of the drain valve.

[0017] In the first aspect described above, preferably, a locking protrusion is constructed on the inner wall of the valve housing in the water inlet. The locking protrusion has a rear cut-off portion, and a limiting protrusion is constructed on the locking protrusion, the limiting protrusion extending laterally from the locking protrusion. This achieves a quick-installation structure for the drain valve.

[0018] In the first aspect described above, preferably, an operating part is constructed on the outer wall of the valve housing opposite to the inlet. This allows for convenient installation of the drain valve.

[0019] A second aspect of this invention provides a vehicle having a drain valve according to the first aspect described above. This enables a normally open drain valve for the vehicle to ensure the interior of the vehicle body remains dry. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the drain valve according to the present invention;

[0021] Figure 2 This is a three-dimensional schematic diagram of the valve housing of the drain valve according to the present invention.

[0022] Figure 3 This is a perspective view of the valve housing of the drain valve according to the present invention.

[0023] Figure 4 This is a three-dimensional schematic diagram of the valve seat of the drain valve according to the present invention;

[0024] Figure 5 This is a three-dimensional schematic diagram of the valve seat and floating component of the drain valve according to the present invention.

[0025] Figure 6 This is a perspective view of the valve seat and floating element of the drain valve according to the present invention. Detailed Implementation

[0026] like Figure 1 As shown, the drain valve 100 according to this utility model includes a valve housing 1, a valve seat 2, and a floating element 3. The valve housing 1 is fixedly connected to the valve seat 2, thereby forming a floating space 4 between the valve housing 1 and the valve seat 2. The floating element 3 is arranged in a floating manner in the floating space 4 between the valve housing 1 and the valve seat 2.

[0027] like Figure 2 and Figure 3 As shown, the valve housing 1 has an inlet 11 and an outlet 12. Water from the vehicle body can flow into the valve housing 1 through the inlet 11 and flow out of the valve housing 1 through the outlet 12. In an embodiment of the present invention, the outlet 12 opens downwards, and the inlet 11 opens to the side. Preferably, the opening edge 121 of the outlet 12 is in a plane parallel to a horizontal plane. Preferably, the opening edge 111 of the inlet 11 is in a plane that forms an angle with, for example, perpendicular to, the plane containing the opening edge of the outlet 12. Alternatively, the inlet 11 can also open upwards.

[0028] In an embodiment of this utility model, the valve housing 1 is integrally molded from a valve housing body 13, an inlet seal 14, and an outlet seal 15 using a two-color injection molding process. The annular inlet seal 14 forms the opening edge 111 of the inlet 11, and the annular outlet seal 15 forms the opening edge 121 of the outlet 12. In a preferred embodiment, the inlet seal 14 and the outlet seal 15 are made of the same material, such as silicone; the valve housing body 13 is made of rigid plastic to form a stable and rigid main structure of the valve housing 1. Preferably, the hardness of the valve housing body 13 is greater than that of the inlet seal 14 and the outlet seal 15. The valve housing body 13 has a toothed structure 131 at its inlet, and the connecting portion of the inlet seal 14 has a corresponding toothed structure 141, with the toothed structure 131 of the valve housing body 13 and the toothed structure 141 of the inlet seal 14 interlocking. The toothed structure increases the contact area between the valve body 13 and the inlet seal 14, ensuring a secure connection between them. In alternative or additional technical solutions, the valve body 13 has this toothed structure at its outlet, and correspondingly, the connection portion of the outlet seal 15 has a matching toothed structure (not shown in the figure).

[0029] A locking protrusion 16 is constructed on the inner wall of the valve body 13 of the valve housing 1 in the inlet 11. The cross-sectional shape of the locking protrusion 16 in the plane containing the opening edge 111 of the inlet 11 is adapted to the locking opening (not shown) on the body sheet metal, allowing the locking protrusion 16 to pass through the locking opening. The locking protrusion 16 has a rear cut-out 161. A limiting protrusion 10 extending upward in the vertical direction is constructed on the locking protrusion 16. During installation, the drain valve 100 is held with the outlet 12 facing to the side. By applying a clamping force towards the body sheet metal to the valve housing 1, the opening edge 111 of the inlet seal 14 is tightly pressed against the body sheet metal, and the locking protrusion 16 passes through the locking opening. At the same time, the limiting protrusion 10 abuts against the body sheet metal and deforms rearward, and the rear cut-out 161 protrudes slightly beyond the back of the body sheet metal. Next, rotate the valve housing 1 90° so that the outlet 12 faces downward, and release the clamping force. At this time, the body sheet metal is clamped between the rear cut 161 and the limiting protrusion 10. In this way, the valve housing 1, together with the other components of the drain valve 100, is installed on the body sheet metal.

[0030] An operating portion 17 is constructed on the outer wall of the valve housing body 13 opposite to the inlet 11. In an embodiment of this invention, the operating portion 17 is constructed as an operating protrusion 17 (see...). Figure 3In an alternative embodiment, the operating part 17 can also be configured as an operating recess (not shown). When installing the drain valve 100, the operator can easily grasp the operating part 17 and apply clamping force and rotational torque. Furthermore, along the circumferential direction of the outlet 12, a snap-fit ​​protrusion 18 and a stop 19 are constructed on the side of the valve body 13 of the valve housing 1. The snap-fit ​​protrusion 18 is for engaging with the snap-fit ​​groove 21 of the valve seat 2 (see...). Figure 4 They interlock.

[0031] like Figure 4 As shown, the valve seat 2 has a valve seat support surface 22, in which a bottom opening 221 is formed. A first valve seat sidewall 231 and a second valve seat sidewall 232 are formed on both sides of the valve seat support surface 22, and a valve seat rear wall 233 is formed at the back. The first valve seat sidewall 231, the second valve seat sidewall 232, and the valve seat rear wall 233 form a receiving space 24 for accommodating the valve housing 1. Four guide strips 27 are formed on the inner walls of the first valve seat sidewall 231 and the second valve seat sidewall 232, extending vertically upwards from the valve seat support surface 22. Two snap-fit ​​grooves 211 and 212 are respectively formed on the first valve seat sidewall 231 and the second valve seat sidewall 232. On both sides of the first snap-fit ​​groove 211, a first through groove 251 is formed in the first valve seat sidewall 231. The first through groove 251 penetrates the first valve seat sidewall 231 and extends from the upper end of the first valve seat sidewall 231 to near the valve seat support surface 22, thereby forming a first overhang 261 between the two first through grooves 251. Similarly, second through grooves 252 are respectively constructed on both sides of the second snap-fit ​​groove 212 in the second valve seat sidewall 232, thereby forming a second overhang 262. As an additional technical solution, a third through groove 253 is constructed on both sides of the third snap-fit ​​groove 213 in the valve seat rear wall 233, thereby forming a third overhang 263. The first overhang 261, the second overhang 262, and the third overhang 263 are collectively referred to as overhang 26. The first through groove 251, the second through groove 252, and the third through groove 253 are collectively referred to as through groove 25. The first valve seat sidewall 231, the second valve seat sidewall 232, and the valve seat rear wall 233 are collectively referred to as valve seat sidewall 23. The first snap-fit ​​groove 211, the second snap-fit ​​groove 212, and the third snap-fit ​​groove 213 are collectively referred to as snap-fit ​​groove 21.

[0032] When the valve housing 1 is assembled into the receiving space 24 of the valve seat 2, the snap-fit ​​protrusion 18 first contacts the upper end of the overhang 26. As the valve housing 1 is pushed further downward, the inclined surface of the snap-fit ​​protrusion 18 adheres to the inner wall of the overhang 26, gradually expanding the overhang 26 until the snap-fit ​​protrusion 18 slides into the corresponding snap-fit ​​groove 21. At this point, the overhang 26 springs back, thus engaging the snap-fit ​​protrusion 18 in the snap-fit ​​groove 21. Simultaneously, the stop 19 abuts against the upper end of the valve seat sidewall 23 (see...). Figure 1Thus, the valve housing 1 is firmly assembled in the valve seat 2, and a floating space 4 is formed between the opening edge 121 of the outlet 12 of the valve housing 1 and the valve seat support surface 22, and the floating component 3 is arranged in the floating space 4.

[0033] like Figure 5 and Figure 6 As shown, the floating component 3 has a sealing surface 31, which has a basic shape 311 corresponding to the opening edge 121 of the outlet 12 of the valve housing 1, for example, an ellipse. In an embodiment of this invention, the sealing surface 31 is planar. Furthermore, the outer contour dimension of the sealing surface 31 is slightly larger than the opening edge 121, thereby ensuring that the sealing surface 31 and the opening edge 121 can seal against each other. "Sealing against each other" as used herein refers to the formation of a sealing interface between two components through the direct contact of their contact surfaces, without the use of additional sealing elements or auxiliary sealing measures, thereby preventing leakage of the medium between the two components. Guide contours 312 are formed on both sides of the basic shape 311 of the sealing surface 31. When the floating component 3 is in the floating space 4, the guide strip 27 of the valve seat 2, the first valve seat sidewall 231, and the second valve seat sidewall 232 restrict the guide contours 312 of the floating component 3 from the four corners, thereby allowing the floating component 3 to move up and down in the floating space 4 in a vertical direction.

[0034] A downwardly protruding protrusion 33 is constructed on the bottom side 32 of the floating member 3, the protrusion 33 having a basic rectangular outline 331 in the horizontal plane. The bottom opening 221 of the valve seat 2 is shaped to fit the basic outline 331. When the floating member 3 rests against the valve seat support surface 22 of the valve seat 2, the protrusion 33 can pass through the bottom opening 221. Viewed from the side, the outline of the protrusion 33 gradually tapers away from the bottom side 32. In an embodiment of the present invention, the side profile of the protrusion 33 of the floating member 3 is, for example, V-shaped (see...). Figure 6 This allows the V-shaped structure of the protrusion 33 of the floating member 3 to guide it back into the bottom opening 221 when the floating member 3 falls from the sealed position, ensuring a stable return. Alternatively, the side profile of the protrusion 33 of the floating member 3 can be U-shaped (not shown). Furthermore, the protrusion 33 increases the drainage volume, thereby increasing the buoyancy of the floating member 3 and ensuring close contact between the floating member 3 and the sealing surface 3. Additionally, the downward-protruding protrusion 33 lowers the overall center of gravity of the floating member 3, thus helping to maintain its horizontal position during floating. The floating member 3 can be a solid or hollow component, as long as its density is less than that of water and it can float in water.

[0035] After the drain valve 100 is installed on the vehicle body sheet metal, for example, when the vehicle is not in water, the floating member 3 rests horizontally on the valve seat support surface 22 under the action of gravity. There is a gap between the floating member 3 and the outlet 12 of the valve body 1. At this time, the floating member 3 is in the fallen position, and the drain valve 100 is in the normally open state. At this time, water in the vehicle body can pass through the locking opening on the body sheet metal, enter the valve body 1 from the inlet 11, and flow out through the gap between the outlet 12 and the floating member 3. The through grooves 251, 252, and 253 constructed on the valve seat 2 can also play the role of draining water.

[0036] For example, when a vehicle is wading through water, the water in the environment flows to the drain valve 100. Due to buoyancy, the floating component 3 floats up along the guide strip 27 and eventually seals against the opening edge 121 of the outlet 12. At this time, the floating component 3 is in the sealed position, and the drain valve 100 is in the closed state. This prevents water in the environment from flowing back into the drain valve 100 and the vehicle body. When the water in the environment recedes, due to gravity, the floating component 3 falls back down along the guide strip 27 onto the valve seat support surface 22, so that the floating component 3 is in the fallen position again and the drain valve 100 is in the normally open state.

[0037] It should be understood that this utility model is not limited to the specific embodiments described above. Without departing from the core concept of this utility model, various modifications and substitutions can be made to the specific structure. The following are some feasible alternative or additional implementation schemes.

[0038] In an alternative or additional embodiment, the connection between the valve housing 1 and the valve seat 2 is no longer a snap-fit ​​connection, but a fixed connection is achieved by welding. For example, ultrasonic welding, hot plate welding, or other welding processes suitable for plastic parts can be used to achieve a reliable connection.

[0039] In another alternative or additional embodiment, the guide bar on the valve seat 2 acting on the floating member 3 can be changed from being located at both ends of the side wall of the valve seat 2 to being located in the middle of the side wall of the valve seat 2. In this embodiment, a sliding groove (not shown) for guidance is formed in the floating member 3, which can engage with the guide bar and slide in the vertical direction to guide the floating member 3 to move accurately up and down in the vertical direction in the floating space 4.

[0040] In another alternative embodiment, the sealing surface 31 of the floating member 3 and the opening edge 121 of the outlet 12 of the valve housing 1 are no longer set to be parallel to the horizontal plane, but are set to an inclined structure at a certain angle, that is, the plane containing the sealing surface 31 and the opening edge 121 forms an angle with respect to the horizontal plane, as long as it can be ensured that when the floating member 3 floats up under the action of buoyancy, its sealing surface 31 can reliably seal and contact the opening edge 121. This structure can, for example, optimize the water flow path.

[0041] In another alternative embodiment, the sealing surface 31 of the floating member 3 is no longer a planar structure, but is constructed with a non-planar sealing profile, such as a spherical, arcuate, or conical structure (not shown), and the opening edge 121 of the outlet 12 is correspondingly constructed as a circle. The non-planar sealing surface shape of the sealing surface 31 matches the opening edge 121 of the outlet 12 to adapt to different contact angles, ensuring a reliable sealing contact between the floating member 3 and the opening edge 121 during the floating process. Compared with a planar sealing structure, a sealing surface with a three-dimensional curved surface structure such as a spherical, arcuate, or conical surface can improve the self-adaptability of the sealing surface and the sealing fit tolerance, especially when the floating member 3 is not floating horizontally, it can still effectively achieve a seal, thereby improving the sealing reliability and environmental adaptability of the drain valve 100.

[0042] In another alternative implementation, the protrusion 33 of the floating member 3 can be omitted and the thickness of the floating member 3 can be increased, as long as sufficient drainage volume is achieved and sufficient buoyancy is guaranteed.

[0043] In another alternative embodiment, the valve housing 1 may not have seals, i.e., it may lack an inlet seal 14 and an outlet seal 15, and may only have a valve housing body 13. In this case, the valve housing body 13 itself forms the opening edge 121 of the outlet 12 and the opening edge 111 of the inlet 11. To enhance the sealing effect, sealing components may be arranged on a component that abuts against the valve housing 1, such as a body panel.

[0044] In another alternative embodiment, the valve housing 1 may have only one seal, namely, an inlet seal 14 or an outlet seal 15. That is, for example, only the inlet seal 14 is provided and the outlet seal 15 is omitted, or vice versa. Those skilled in the art should understand that this type of structural variation is a partial adjustment to the two-color injection molding process, the purpose of which is to optimize the structural design and manufacturing cost according to actual application needs, while still achieving the same technical function and expected technical effect as this utility model, and does not depart from the core concept of this utility model.

[0045] It should be understood that the "vertical direction" used in this utility model refers to the direction consistent with the direction of gravity; the "horizontal plane" refers to an imaginary plane perpendicular to the vertical direction; the "side" refers to the two sides in the horizontal direction perpendicular to the opening orientation of the inlet 11; "upward" means the direction away from the ground in the vertical direction, and "downward" means the direction towards the ground in the vertical direction.

[0046] Although the present invention has been described with reference to one or more exemplary embodiments, those skilled in the art will understand that the present invention is not limited to the specific structures and components described herein, and that various modifications, variations, and alterations can be understood from the foregoing description without departing from the spirit and scope of the present invention as defined by the appended claims. The present invention is not limited to the shown order of steps, as some steps may be performed in a different order and / or simultaneously with other steps. Therefore, the present invention is not limited to the disclosed specific embodiments (one or more), but will include all embodiments falling within the scope of the appended claims.

Claims

1. A drain valve, characterized in that, The drain valve includes: A valve housing having an inlet and an outlet located below the valve housing; A valve seat is fixedly connected to the valve housing below the valve housing, and a floating space is formed between the valve seat support surface and the outlet. A floating element having an upper surface and a lower surface, the floating element being arranged in the floating space and having a falling position and a sealing position; The floating component is configured such that, in the retracted position, the lower surface of the floating component rests against the valve seat support surface, and there is a gap between the upper surface of the floating component and the outlet. The floating component is configured to float to the sealing position, and in the sealing position, the upper surface of the floating component seals against the water outlet.

2. The drain valve according to claim 1, characterized in that, The bottom side of the floating member has a downward protrusion. In the retracted position of the floating member, the protrusion is located in the bottom opening of the valve seat support surface of the valve seat.

3. The drain valve according to claim 2, characterized in that, In the transverse cross-section of the floating member, the outline of the protrusion gradually tapers away from the lower surface.

4. The drain valve according to any one of claims 1 to 3, characterized in that, The periphery of the floating element has a guide profile, and the guide strip extending vertically from the valve seat and / or the valve seat sidewall restricts the guide profile of the floating element, wherein the guide profile of the floating element is capable of moving up and down along the guide strip and / or the valve seat sidewall.

5. The drain valve according to claim 4, characterized in that, The guide bar extends vertically on the side wall of the valve seat, and a sliding groove for guidance is formed in the floating member. The sliding groove is fitted with the guide bar, wherein the sliding groove of the floating member can move up and down along the guide bar.

6. The drain valve according to any one of claims 1 to 3, characterized in that, The valve housing has a valve housing body and also has: An inlet seal that forms the opening edge of the inlet; and / or An outlet seal that forms the opening edge of the outlet.

7. The drain valve according to claim 6, characterized in that, The valve body, the inlet seal, and / or the outlet seal are integrally molded by two-color injection molding, wherein the valve body is made of rigid plastic, and the inlet seal and / or the outlet seal is made of silicone.

8. The drain valve according to claim 7, characterized in that, The valve body has a toothed structure at the location where it connects with the inlet seal and / or the outlet seal, and the inlet seal and / or the outlet seal has a toothed structure that engages with it.

9. The drain valve according to any one of claims 1 to 3, characterized in that, The valve housing has a snap-fit ​​protrusion and a stop on its side. The valve seat has a snap-fit ​​groove on its side wall that mates with the snap-fit ​​protrusion. The snap-fit ​​protrusion is inserted into the snap-fit ​​groove, and the stop abuts against the upper end of the valve seat side wall.

10. The drain valve according to claim 9, characterized in that, The valve seat has at least one pair of adjacent through grooves in its sidewall. The through grooves extend downward from the upper end of the valve seat sidewall to above the valve seat support surface. The through grooves are located on both sides of the snap-fit ​​groove and are connected to the gap.

11. The drain valve according to any one of claims 1 to 3, characterized in that, The upper surface of the floating component is configured as a sealing plane, and the opening edge of the outlet is configured to lie in a plane.

12. The drain valve according to any one of claims 1 to 3, characterized in that, The upper surface of the floating component is constructed as a sealing spherical surface or a sealing conical surface, and the opening edge of the water outlet is constructed as a matching circle.

13. The drain valve according to any one of claims 1 to 3, characterized in that, A locking protrusion is constructed on the inner wall of the valve housing in the water inlet. The locking protrusion has a rear cut-off portion and a limiting protrusion is constructed on the locking protrusion, which extends laterally from the locking protrusion.

14. The drain valve according to any one of claims 1 to 3, characterized in that, An operating section is constructed on the outer wall of the valve body opposite to the water inlet.

15. A vehicle having a drain valve according to any one of claims 1 to 14.

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