Check valve for vehicle door water outlet
By designing a check valve for the door drain outlet and using gravity and water buoyancy to control the sliding of the sealing head, the problem of external accumulated water flowing back into the door is solved, the inside of the door is kept dry and impurities are prevented from entering, ensuring normal drainage function.
Patent Information
- Application Number
- CN202422869138.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-22
AI Technical Summary
When there is a lot of water accumulated outside, the existing door drain outlet is prone to flow back into the door, affecting internal components. The existing blocking valve cannot effectively solve this problem.
A check valve for a vehicle door drain outlet is designed, comprising a valve body, a blocking head, a buffer body, and a drive structure. Gravity and the buoyancy of water are used to control the blocking head to slide and block the water hole, ensuring that the blocking head is away from the water hole during normal drainage. In the event of backflow, the blocking head slides and blocks the water hole, reducing backflow.
Under the premise of ensuring normal drainage function, it effectively reduces the backflow of external accumulated water into the car door, ensures the dryness of the inside of the car door, prevents impurities from entering, and has a simple and convenient structure.
Smart Images
Figure CN223331242U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of one-way valves, and in particular to a check valve for a vehicle door drain outlet. Background Art
[0002] Since the windows on car doors are not airtight, water can enter the interior of the door through the gaps in the windows on rainy days or when washing the car. To prevent water accumulation in the door from affecting the components inside the door, one or more drain holes are usually reserved at the bottom of the door during production. These drain holes allow the accumulated water inside the door to be discharged to the outside of the door, thereby reducing the accumulation of water inside the door. At the same time, a blocking valve is installed at the drain hole, so that when drainage is not required, the bottom drain hole is blocked to prevent the accumulated water from flowing back into the door through the drain hole.
[0003] However, although reserving drainage outlets can reduce the accumulation of water in the car door, in actual applications, when there is a lot of water on the ground, the accumulated water from the outside can easily flow back into the car door through the drainage outlet, causing the components inside the car door to be affected. There is room for improvement. Utility Model Content
[0004] In order to ensure the normal drainage function of the door drain outlet while reducing the situation where external accumulated water flows back into the door through the drain outlet, the present application provides a check valve for the door drain outlet.
[0005] This application provides a check valve for a vehicle door drain outlet, which adopts the following technical solution:
[0006] A check valve for a vehicle door drain outlet includes a valve body, the valve body is provided with a water inlet and a water outlet, the valve body is provided with a buffer body, the buffer body is provided with a water hole, the water hole connects the water inlet and the water outlet, a sealing head is slidably provided in the valve body, and a driving structure for driving the sealing head to seal the water hole.
[0007] By adopting the above technical solution, when in use, the valve body is installed in the drain outlet of the vehicle door, so that the water inlet, water outlet, water hole and drain outlet are connected. Therefore, under normal conditions, under the influence of gravity, the blocking head is away from the water hole, thereby ensuring the normal use of the drainage function in the vehicle door. When external water enters the water outlet, the blocking head can be driven by the driving structure to slide to block the water hole, thereby isolating the water inlet and the water outlet, reducing the situation where external accumulated water flows back from the water outlet into the vehicle door, which is more conducive to use.
[0008] Preferably, the valve body includes an upper valve shell and a lower valve shell detachably connected to the upper valve shell, a valve cavity is formed between the upper valve shell and the lower valve shell, the water inlet is arranged on the upper valve shell, one end of the buffer body is fixedly connected to the upper valve shell toward one end of the lower valve shell, the other end of the buffer body extends into the valve cavity, the water hole connects the water inlet with the valve cavity, the sealing head is slidably arranged in the lower valve shell, and the driving structure is arranged on the lower valve shell.
[0009] By adopting the above technical solution, when in use, the arrangement of the upper valve shell and the lower valve shell facilitates the processing and assembly of the valve body and facilitates use.
[0010] Preferably, a throttle plate and a limiting structure for fixing and limiting the throttle plate are provided between the upper valve shell and the lower valve shell, and the end of the sealing head away from the water hole is in abutment with the throttle plate.
[0011] By adopting the above technical solution, when in use, the throttle plate is fixed in the valve cavity by the limiting structure, so that the water flow pressure in the valve cavity is reduced by the setting of the throttle plate, thereby ensuring the normal use of the plugging head.
[0012] Preferably, the limiting structure includes an insert ring fixed on one end of the upper valve shell facing the lower valve shell, and an annular groove is opened on one end of the lower valve shell facing the upper valve shell. The outer wall of the insert ring is threadedly engaged with the inner wall of the annular groove, and the throttle plate is located between the end of the insert ring and the bottom wall of the annular groove.
[0013] By adopting the above technical solution, when in use, through the coordinated use of the insert ring and the ring groove, the upper valve shell and the lower valve shell can be detachably connected, while the throttle plate can also be fixed and limited, and the overall installation is simple and convenient.
[0014] Preferably, the driving structure includes a sliding rod slidingly arranged on the throttle plate, and a float fixed at one end of the sliding rod, the float is located on the side of the throttle plate away from the plugging head, one end of the sliding rod passes through the throttle plate and is threadedly connected to the plugging head, and the float part extends into the water outlet.
[0015] By adopting the above technical solution, when in use, through the cooperation of the float and the sliding rod, when water flows back into the water outlet, the float floats up under the buoyancy of the water, thereby driving the sliding rod to move upward, thereby driving the sealing head to seal the water hole. When the water in the water outlet is discharged, the float drops to its original position under the action of gravity, thereby making the water hole conductive, thereby achieving the premise of not affecting the normal drainage function of the car door drain outlet, when encountering external accumulated water flowing back into the water outlet, reducing the situation of water continuing to flow back into the car door, and the use process is simple and convenient.
[0016] Preferably, the water outlet is arranged in a funnel shape, and the float portion extends into an area with a smaller inner diameter of the water outlet.
[0017] By adopting the above technical solution, when in use, through the funnel-shaped water outlet, the water pressure in the area with smaller pipe diameter is greater than the water flow in the area with larger pipe diameter due to the same flow rate. When water accumulates to a certain height in the water outlet, the accumulated water in the water outlet provides buoyancy for the float, which can drive the float to seal the water hole in time, thereby reducing the situation of water flowing back from the water outlet into the car door.
[0018] Preferably, the end of the plugging head facing the water hole is tapered, and an edge of the end of the water hole is provided with a guide slope, which abuts and cooperates with the tapered surface of the plugging head.
[0019] By adopting the above technical solution, when in use, the conical surface and the guide inclined surface are used in conjunction with each other, which makes it easier for the sealing head to seal the water hole, thereby ensuring the anti-backflow effect of the valve body.
[0020] Preferably, a filter screen is detachably provided at the end of the water outlet.
[0021] By adopting the above technical solution, when in use, a filter net is set to block impurities at the water outlet, preventing external impurities from entering the water outlet and causing the water outlet to be blocked, thereby ensuring the drainage function of the car door drain outlet.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. Under normal conditions, due to the influence of gravity, the blocking head is away from the water hole, thus ensuring the normal use of the drainage function in the car door. When external water enters the water outlet and flows back, the buoyancy of the water can drive the float ball to float up, thereby driving the blocking head to slide to block the water hole, thereby isolating the water inlet and outlet, reducing the situation where external water flows back into the car door from the water outlet, and is more convenient for use;
[0024] 2. The use of the insert ring and the ring groove not only realizes the detachable connection between the upper valve housing and the lower valve housing, but also realizes the fixed limit of the throttle plate, thereby reducing the water flow pressure in the valve cavity through the throttle plate, thereby ensuring the normal use of the plug;
[0025] 3. By setting up a filter, impurities at the water outlet are blocked to prevent external impurities from entering the water outlet and causing the water outlet to be blocked. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is an axonometric diagram mainly showing the overall structure in Example 1 of the present application;
[0027] Figure 2 This is a cross-sectional view mainly showing the overall structure of Example 1 of the present application;
[0028] Figure 3 This is an exploded view of the overall structure of Example 1 of the present application;
[0029] Figure 4 It is a cross-sectional view mainly showing the overall structure in the second embodiment of the present application.
[0030] Figure numerals: 1. Valve body; 11. Upper valve shell; 12. Lower valve shell; 13. Valve chamber; 14. Insert ring; 2. Water inlet; 3. Water outlet; 4. Buffer body; 41. Water hole; 42. Guide slope; 5. Sealing head; 6. Drive structure; 61. Sliding rod; 62. Float; 7. Throttle plate; 8. Filter screen; 9. Guide plate. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.
[0032] An embodiment of the present application discloses a check valve for a vehicle door drain outlet.
[0033] Example 1:
[0034] Reference Figure 1 and Figure 2 , a check valve for a car door drain outlet, comprising a horizontally placed valve body 1, the valve body 1 consisting of an upper valve shell 11 and a lower valve shell 12, wherein a water inlet 2 is formed on the upper valve shell 11, and a water outlet 3 is formed on the lower valve shell 12, a valve cavity 13 is formed between the upper valve shell 11 and the lower valve shell 12, the water outlet 3 is communicated with the valve cavity 13, and a buffer body 4 is integrally formed at the bottom end of the upper valve shell 11, a water through hole 41 is opened on the buffer body 4 along the axial direction of the water inlet 2, the water inlet 2 is communicated with the valve cavity 13 through the water through hole 41; when in use, the valve body 1 is vertically installed in the drain outlet of the car door, so that the accumulated water in the car door flows into the water inlet 2 from the drain outlet, and the water flow from the water inlet 2 is guided into the water through hole 41 through the buffer body 4, and flows into the valve cavity 13 along the water through hole 41, and finally discharged along the water outlet 3.
[0035] Reference Figure 2 and Figure 3The bottom end of the buffer body 4 extends into the valve cavity 13, and the diameter of the outer wall of the bottom end of the buffer body 4 gradually decreases from top to bottom. A throttle plate 7 is provided below the buffer body 4, and a plurality of throttling holes are formed on the throttle plate 7. In this embodiment, the throttle plate 7 is preferably made of a composite material of PA66+glass fiber material, and a limiting structure is provided between the upper valve shell 11 and the lower valve shell 12; when in use, the throttle plate 7 is fixedly limited in the valve cavity 13 by the limiting structure, thereby reducing the water flow pressure in the valve cavity 13 through the throttle plate 7, thereby ensuring that the structure in the valve cavity 13 will not be damaged due to excessive water flow pressure. At the same time, the throttle plate 7 is also used to seal the connection gap between the upper valve shell 11 and the lower valve shell 12.
[0036] Reference Figure 2 and Figure 3 The limiting structure is composed of an insert ring 14, the upper end of the insert ring 14 and the lower end of the upper valve shell 11 are integrally formed, and an annular groove is provided at the upper end of the lower valve shell 12, the lower end of the insert ring 14 can be inserted into the annular groove, and the outer wall of the insert ring 14 forms a threaded fit with the inner wall of the annular groove, and the throttle plate 7 is located as a whole between the lower end of the insert ring 14 and the lower valve shell 12; when in use, the throttle plate 7 is placed in the lower valve shell 12, and then the end of the insert ring 14 is aligned with the annular groove, and the upper valve shell 11 is screwed on, so that the lower end of the insert ring 14 gradually moves downward until it abuts against the upper wall of the throttle plate 7, and the throttle plate 7 can be clamped and limited by the lower end of the insert ring 14 and the bottom wall of the annular groove. The overall combination is simple and convenient, and it is easy for users to disassemble and replace.
[0037] Reference Figure 2 and Figure 3 A sealing head 5 is provided between the buffer body 4 and the throttle plate 7. The sealing head 5 is used to seal the water hole 41. In this embodiment, the sealing head 5 is made of flexible rubber material, and the top of the sealing head 5 is conical. When the bottom end of the sealing head 5 abuts the throttle plate 7, there is a gap between the top of the sealing head 5 and the water hole 41. At the same time, a guide slope 42 is formed on the edge of the bottom opening of the water hole 41, and the guide slope 42 abuts against the conical surface of the sealing head 5.
[0038] Reference Figure 2 and Figure 3 When in use, the conical surface on the sealing head 5 and the guide inclined surface 42 on the buffer body 4 cooperate to guide the moving direction of the sealing head 5, thereby ensuring the sealing effect after the sealing head 5 blocks the water hole 41; the throttle plate 7 abuts against the bottom end of the sealing head 5 to prevent the sealing head 5 from being separated from the water hole 41 by too much distance, resulting in the subsequent failure of the sealing head 5 to normally block the water hole 41 when used.
[0039] Reference Figure 2 and Figure 3At the same time, in order to ensure that when the external accumulated water flows back from the water outlet 3, the blocking head 5 can block the water hole 41 in time to reduce the situation where water flows back into the car door, a driving structure 6 is also provided in the lower valve shell 12. The driving structure 6 is composed of a sliding rod 61 and a float 62. The float 62 is located on the lower side of the throttle plate 7. The bottom end of the sliding rod 61 and the upper end of the float 62 are integrally formed. The upper end of the sliding rod 61 passes through the throttle plate 7 and is threadedly connected to the blocking head 5.
[0040] Reference Figure 2 and Figure 3 In this embodiment, the float 62 and the sliding rod 61 are preferably made of low-foaming EPP material. When in use, the low-foaming EPP material has a density much lower than that of water and is easy to float. When water flows back into the water outlet 3, when the water surface contacts the bottom end of the float 62, the float 62 can float up under the buoyancy of the water, thereby driving the sealing head 5 to seal the water hole 41, thereby effectively reducing the situation where water flows back into the car door.
[0041] Reference Figure 2 and Figure 3 , since the movement of the blocking head 5 is achieved by relying on the buoyancy of water to drive the float 62 to float up, in order to ensure that the blocking head 5 can block the water hole 41 in a timely manner, in the embodiment of the present application, the water outlet 3 is arranged in a funnel shape as a whole, and the end with the larger inner diameter of the water outlet 3 is connected to the upper valve shell 11, and the end with the smaller inner diameter of the water outlet 3 is arranged vertically downward. In addition, the float 62 partially extends into the area with the smaller inner diameter of the water outlet 3; when in use, the water flow pressure in the bottom area of the float 62 is increased through the water outlet 3 with a narrowed mouth, so as to ensure that when the external water flows into the water outlet 3 to a certain liquid level height, the float 62 can float up in time, thereby driving the blocking head 5 to block the water hole 41, thereby ensuring the performance of the valve body 1.
[0042] Reference Figure 2 and Figure 3 A filter screen 8 is also provided at the bottom end of the water outlet 3. The filter screen 8 is fixed to the bottom end surface of the water outlet 3 by bolts. In this embodiment, the filter screen 8 is preferably made of stainless steel, and its mesh size is at least 500 meshes. When in use, impurities are filtered out by the filter screen 8 to prevent impurities from entering the water outlet 3 and causing the water outlet 3 to be blocked, thereby ensuring the normal drainage effect of the drain outlet on the car door.
[0043] The implementation principle of the embodiment of the present application is as follows: when in use, the valve body 1 is installed as a whole at the bottom end of the drain outlet of the car door, so that the upper valve shell 11 is vertically facing upwards, and the bottom end of the lower valve shell 12 is flush with the edge of the opening of the drain outlet; in the initial state, the float 62 and the plugging head 5 fall downward under the action of gravity, and the throttle plate 7 is used to abut and limit the plugging head 5 to ensure normal drainage of the drain outlet while avoiding the gap between the plugging head 5 and the water hole 41 being too large to affect the subsequent plugging performance. When the accumulated water outside the car door enters from the water outlet 3 until When it contacts the float 62, as the water level in the water outlet 3 rises, the float 62 floats upward under the buoyancy of the water, thereby driving the blocking head 5 to move upward, thereby blocking the water hole 41, and thus achieving the purpose of reducing the backflow of water from the water outlet 3 into the car door; and when the water in the water outlet 3 is drained, the float 62 and the blocking head 5 return to their original state, and the water hole 41 re-connects the water inlet 2 and the water outlet 3, thereby making the car door drain outlet conductive. The overall use is simple and convenient, and it also ensures the drainage function of the car door drain outlet.
[0044] Example 2:
[0045] Reference Figure 4 The difference between this embodiment and embodiment 1 is that a guide plate 9 is further sleeved on the sliding rod 61. The guide plate 9 is arranged in an umbrella shape as a whole. A groove is provided on the bottom end surface of the throttle plate 7 to match the upper end surface of the guide plate 9. The guide plate 9 and the groove are embedded in each other, and when the guide plate 9 is embedded in the groove, the guide plate 9 blocks the throttle hole on the throttle plate 7.
[0046] Reference Figure 4 When in use, in the initial state, the bottom end of the blocking head 5 abuts against the throttle plate 7, and the upper end surface of the guide plate 9 is separated from the throttle plate 7. The accumulated water in the car door enters from the water inlet 2, and then enters the valve chamber 13 through the water through hole 41. Under the action of the throttle hole of the throttle plate 7, it flows into the water outlet 3, and is then guided to the surrounding side by the outer wall of the guide plate 9, and finally discharged from the water outlet 3; when the accumulated water outside the car door enters the water outlet 3, under the action of the buoyancy of the water, the float 62 floats up, thereby driving the guide plate 9 and the blocking head 5 to float up synchronously, so that the guide plate 9 blocks the throttle hole on the throttle plate 7, and the blocking head 5 blocks the water through hole 41, thereby further reducing the situation where water flows back into the car door from the water outlet 3.
[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A check valve for a vehicle door drain outlet, characterized by: The invention comprises a valve body (1), wherein the valve body (1) is provided with a water inlet (2) and a water outlet (3), a buffer body (4) is provided in the valve body (1), a water hole (41) is provided in the buffer body (4), and the water hole (41) communicates with the water inlet (2) and the water outlet (3), a blocking head (5) is slidably provided in the valve body (1), and a driving structure (6) for driving the blocking head (5) to block the water hole (41).
2. A check valve for a vehicle door drain outlet according to claim 1, characterized in that: The valve body (1) comprises an upper valve shell (11) and a lower valve shell (12) detachably connected to the upper valve shell (11); a valve cavity (13) is formed between the upper valve shell (11) and the lower valve shell (12); the water inlet (2) is arranged on the upper valve shell (11); one end of the buffer body (4) is fixedly connected to the upper valve shell (11) toward one end of the lower valve shell (12); the other end of the buffer body (4) extends into the valve cavity (13); the water hole (41) connects the water inlet (2) with the valve cavity (13); the sealing head (5) is slidably arranged in the lower valve shell (12); and the driving structure (6) is arranged on the lower valve shell (12).
3. A check valve for a vehicle door drain outlet according to claim 2, characterized in that: A throttle plate (7) and a limiting structure for fixing and limiting the throttle plate (7) are provided between the upper valve housing (11) and the lower valve housing (12); the end of the sealing head (5) away from the water hole (41) is in abutment with the throttle plate (7).
4. A check valve for a vehicle door drain outlet according to claim 3, characterized in that: The limiting structure includes an insert ring (14) fixed to one end of the upper valve housing (11) facing the lower valve housing (12); an annular groove is provided at one end of the lower valve housing (12) facing the upper valve housing (11); the outer wall of the insert ring (14) is threadedly engaged with the inner wall of the annular groove; and the throttle plate (7) is located between the end of the insert ring (14) and the bottom wall of the annular groove.
5. The check valve for a vehicle door drain outlet according to claim 3, characterized in that: The driving structure (6) comprises a sliding rod (61) slidably arranged on the throttle plate (7), and a floating ball (62) fixed to one end of the sliding rod (61); the floating ball (62) is located on a side of the throttle plate (7) away from the plugging head (5); one end of the sliding rod (61) passes through the throttle plate (7) and is threadedly connected to the plugging head (5); and a portion of the floating ball (62) extends into the water outlet (3).
6. The check valve for a vehicle door drain outlet according to claim 5, characterized in that: The water outlet (3) is arranged in a funnel shape, and the float (62) partially extends into the area of the water outlet (3) with a smaller inner diameter.
7. The check valve for a vehicle door drain outlet according to claim 1, characterized in that: One end of the plugging head (5) facing the water hole (41) is tapered, and a guide slope (42) is provided on the edge of the end of the water hole (41), and the guide slope (42) abuts against the tapered surface of the plugging head (5).
8. The check valve for a vehicle door drain outlet according to claim 1, characterized in that: A filter screen (8) is detachably provided at the end of the water outlet (3).