Rainwater backflow prevention ventilation cushion for electric vehicle

Abstract

The utility model relates to an electric vehicle ventilation cushion capable of preventing rainwater from flowing back. The problem that rainwater of an existing electric vehicle blowing device easily flows back into a cushion from an air inlet is solved. Comprising a cushion body and an air outlet device, an air blowing opening is formed in the cushion body, the air outlet device corresponds to the air blowing opening, the air outlet device comprises a fan, a fan installation frame and a plugging device, an air guide barrel is installed on the inner wall of the cushion body, an inner barrel of the air guide barrel is communicated with the air blowing opening, a plugging plate is located in the air guide barrel, and the fan is fixed to the fan installation frame. An air inlet of the fan mounting frame is communicated with an inner barrel of the air guide barrel in a sealed mode, when the fan discharges air, the air blows the blocking plate in the air guide barrel away from the air guide barrel, when the fan stops discharging air, the blocking plate driving piece drives the blocking plate to block a barrel opening of the barrel-shaped air guide barrel, and a rainwater flow guide groove is formed in the position corresponding to an air blowing opening. The outlet of the rainwater diversion trench is provided with a hose used for pouring rainwater to the outside to prevent rainwater from flowing back to the inside, and internal parts are prevented from being affected with damp or a circuit board is prevented from being affected with damp and short-circuited.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicle accessories, in particular to a ventilated seat cushion for an electric vehicle capable of preventing rainwater from flowing back. Background Art

[0002] With the continuous improvement of living standards, electric vehicles have entered thousands of households. Electric vehicles have the advantages of small size, high speed, use of electricity, no pollution, and easy riding. They carry a large proportion of people's transportation functions. In most cases, they are very convenient to stop at any time and are deeply loved by consumers. In the hot summer, the outdoor temperature is high and the seat cushion is easily exposed to the sun. The seat cushion is filled with a large amount of soft material sponge, and the surface of the seat cushion is generally waterproof cloth, which will make the rider feel that the seat cushion is very stuffy. Existing electric vehicle blowers are usually limited by the seat space, and the design structure is relatively complex, which is not easy to disassemble and repair; in addition, rainwater can easily enter the seat cushion from the air inlet of the seat cushion, causing the internal components to get damp or causing the internal circuit board to get damp and short-circuit. Utility Model Content

[0003] The utility model aims to solve the problem that rainwater in the existing electric vehicle air blowing device easily flows back into the seat cushion from the air inlet.

[0004] The technical solution adopted to solve the technical problem proposed by the utility model is as follows: the utility model of the electric vehicle ventilated seat cushion for preventing rainwater backflow comprises a seat cushion body and an air outlet device, the seat cushion body is provided with an air outlet, the air outlet device is arranged corresponding to the air outlet, the air outlet device comprises a fan, a fan mounting frame and a blocking device, the blocking device comprises a cylindrical air guide tube with openings at both ends, a blocking plate and a blocking plate driving member for driving the blocking plate to block the tube mouth of the cylindrical air guide tube, the air guide tube is mounted on the inner wall of the seat cushion body, the inner tube of the air guide tube is connected with the air outlet, the blocking plate is located in the air guide tube, the fan mounting frame is mounted on the inner wall of the seat cushion body, the fan is fixed on the fan mounting frame, the fan mounting frame is provided with a fan mounting frame air inlet corresponding to the air outlet of the fan, the fan mounting frame air inlet is sealed and connected with the inner tube of the air guide tube, the air guide tube is provided with a rainwater diversion groove corresponding to the air outlet, and the outlet of the rainwater diversion groove is provided with a hose for pouring rainwater to the outside.

[0005] The technical solutions further defining the utility model include:

[0006] The blocking plate driving member includes a blocking plate positioning frame and an elastic member arranged in the air guide tube, one end of the elastic member is fixedly connected to the blocking plate positioning frame, and the other end of the elastic member is fixedly connected to the blocking plate.

[0007] The elastic member is a spring or an elastic rope.

[0008] The fan mounting frame is detachably connected to the inner wall of the cushion body, and the fan mounting frame and the inner wall of the cushion body form a cavity for circuit installation. The fan is installed at the bottom of the cavity, and the air guide tube is located in the cavity.

[0009] The top surface of the blocking plate is an umbrella-shaped structure, a blocking platform is provided at the bottom of the blocking plate, and the air guide tube is provided in a blocking surface that cooperates with the blocking platform.

[0010] The rainwater diversion groove is arranged outside the blocking surface, and the outlet of the rainwater diversion groove is arranged on the outer side wall of the air guide tube.

[0011] The air guide tube is provided with a trumpet-shaped guide wall connected with the outer side wall of the rainwater backflow groove.

[0012] A first conical guide surface is provided at the bottom of the blocking plate, and a second conical guide surface matching the first conical guide surface is provided on the cylindrical inner wall of the air guide tube.

[0013] The cushion body includes a support plate, a buffer layer and an outer skin layer. The buffer layer is located on the support plate, the outer skin layer wraps the buffer layer, the outer skin layer is bonded to the support plate, the air outlet passes through the outer skin layer, the buffer layer and the support plate, the air guide tube is fixedly connected to the support plate, and the outer skin layer passes through the air outlet and is bonded to the support plate.

[0014] The air guide tube is sealed and connected to the inner side wall of the air inlet of the fan mounting frame through waterproof foam.

[0015] Through the above technical scheme, the beneficial effects of the utility model are as follows: the air guide tube of the cushion body of the utility model is installed on the inner wall of the cushion body, the inner tube of the air guide tube is connected with the blowing port, the blocking plate is located in the air guide tube, the blocking plate driving component drives the blocking plate to block the tube mouth of the cylindrical air guide tube, the fan is fixed on the fan mounting frame, the air inlet of the fan mounting frame is sealed and connected with the inner tube of the air guide tube, when the fan discharges air, the wind blows the blocking plate in the air guide tube away from the air guide tube, when the fan stops discharging air, the blocking plate driving component drives the blocking plate to block the tube mouth of the cylindrical air guide tube, a rainwater diversion groove is provided corresponding to the blowing port, and a hose for pouring rainwater to the outside is provided on the outlet of the rainwater diversion groove to prevent rainwater from flowing back to the inside, and to prevent internal components from getting damp or the circuit board from getting damp and short-circuiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a three-dimensional structural schematic diagram of a ventilated seat cushion for an electric vehicle which can prevent rainwater from flowing back.

[0017] Figure 2 The utility model is a three-dimensional structural schematic diagram of a ventilated seat cushion for an electric vehicle which can prevent rainwater from flowing back.

[0018] Figure 3The utility model is a structural schematic diagram of a blocking device of a ventilation seat cushion for an electric vehicle for preventing rainwater backflow when being blocked.

[0019] Figure 4 The utility model is a schematic structural diagram of a sealing device of a ventilated seat cushion for an electric vehicle for preventing rainwater backflow during ventilation.

[0020] Figure 5 The utility model is a schematic diagram of the cutaway structure of a ventilated seat cushion for an electric vehicle which can prevent rainwater from flowing back. DETAILED DESCRIPTION

[0021] The structure of the utility model is further described below in conjunction with the accompanying drawings.

[0022] Reference Figures 1 to 5 The utility model of the electric vehicle ventilated seat cushion for preventing rainwater backflow comprises a seat cushion body 1 and an air outlet device 2. The seat cushion body 1 is provided with an air outlet 11, and the air outlet device is arranged corresponding to the air outlet. The air outlet device 2 comprises a fan 21, a fan mounting frame 22 and a blocking device 23. The blocking device 23 comprises a cylindrical air guide tube 231 with openings at both ends, a blocking plate 232 and a blocking plate driving member 233 for driving the blocking plate to block the tube opening of the cylindrical air guide tube. The air guide tube is installed on the inner wall of the seat cushion body. The inner cylinder 2311 of the air guide tube 231 is connected with the air outlet 11, the blocking plate 232 is located in the air guide tube, the fan mounting frame is installed on the inner wall of the cushion body, the fan 21 is fixed on the fan mounting frame 22, the fan mounting frame is provided with a fan mounting frame air inlet 221 corresponding to the air outlet of the fan, the fan mounting frame air inlet is sealed and connected with the inner cylinder of the air guide tube, the air guide tube 231 is provided with a rainwater guide groove 2312 corresponding to the air outlet, and a hose 3 for pouring rainwater to the outside is provided at the outlet of the rainwater guide groove. When the fan blows out wind, the wind blows the blocking plate in the air guide tube away from the air guide tube, and when the fan stops blowing wind, the blocking plate driving member drives the blocking plate to block the tube mouth of the cylindrical air guide tube, a rainwater guide groove is provided corresponding to the air outlet, and a hose 3 for pouring rainwater to the outside is provided at the outlet of the rainwater guide groove, so as to prevent rainwater from flowing back to the inside, and prevent internal components from getting damp or circuit boards from getting damp and short-circuiting.

[0023] In this embodiment, the blocking plate driving member 233 includes a blocking plate positioning frame 2331 and an elastic member 2332 arranged in the air guide tube. The blocking plate positioning frame is fixed in the air guide tube, one end of the elastic member is fixedly connected to the blocking plate positioning frame, and the other end of the elastic member is fixedly connected to the blocking plate. In this embodiment, the elastic member is an elastic rope, and the elastic member can also be an elastic member such as a spring during specific implementation. When the fan blows out wind, the wind blows up the blocking plate and elastically stretches. When the fan stops blowing out wind, under the tension of the elastic rope, the blocking plate blocks the air guide tube to prevent rainwater from entering. In this embodiment, a first conical guide surface 2321 is provided at the bottom of the blocking plate 232, and a second conical guide surface 2313 that cooperates with the first conical guide surface is provided on the cylindrical inner wall of the air guide tube 231. When the blocking plate blocks the air guide tube, the first conical guide surface and the second conical guide surface are guided and fitted, so that the blocking plate is quickly positioned to prevent displacement.

[0024] In this embodiment, the top surface 2323 of the blocking plate 232 is an umbrella-shaped structure, and a blocking platform 2322 is provided at the bottom of the blocking plate. A blocking surface 2314 cooperating with the blocking platform is provided in the air guide tube 231. A rainwater diversion groove is provided on the outside of the blocking surface, and the outlet of the rainwater diversion groove is provided on the outer wall of the air guide tube. Rainwater flows from the air outlet to the blocking plate of the umbrella-shaped structure, flows along the blocking plate into the rainwater diversion groove, and then flows from the outlet of the rainwater diversion groove into the hose and finally diverted to the outside to flow away, thereby preventing rainwater from flowing into the interior, preventing internal components from getting damp or the circuit board from getting damp and short-circuiting. A trumpet-shaped diversion wall 2315 connected to the outer wall of the rainwater backflow groove is provided on the air guide tube 231. The trumpet-shaped diversion wall can divert all rainwater into the rainwater diversion groove.

[0025] In this embodiment, the cushion body 1 includes a support plate 12, a buffer layer 13 and an outer skin layer 14. The buffer layer is located on the support plate. The buffer layer can be filled with foam or the like. The outer skin layer wraps the buffer layer. The outer skin layer is bonded to the support plate. The air outlet passes through the outer skin layer, the buffer layer and the support plate. The air guide is fixedly connected to the support plate. The outer skin layer passes through the air outlet and is bonded to the support plate. To prevent rainwater from flowing into the cushion, the air guide is sealed and connected to the inner wall of the air inlet of the fan mounting frame by waterproof foam. This prevents air leakage between the air guide and the fan mounting frame.

[0026] In this embodiment, the fan mounting frame 22 is detachably connected to the inner wall of the seat cushion body by screws, and the fan mounting frame and the inner wall of the seat cushion body form a cavity 5 for circuit installation. The fan is installed at the bottom of the cavity, and the air guide is located in the cavity. Therefore, when disassembling, the circuit board and the fan therein can be disassembled by disassembling the fan mounting frame, thereby facilitating replacement and maintenance.

[0027] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the protection scope of the utility model. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the protection scope of the utility model.

Claims

1. A ventilated seat cushion for electric vehicles to prevent rainwater from flowing back, comprising a seat cushion body and an air outlet device, wherein the seat cushion body is provided with an air outlet, and the air outlet device is arranged corresponding to the air outlet, and the characteristics are: The air outlet device includes a fan, a fan mounting frame and a blocking device. The blocking device includes a cylindrical air guide tube with openings at both ends, a blocking plate and a blocking plate driving member for driving the blocking plate to block the tube opening of the cylindrical air guide tube. The air guide tube is installed on the inner wall of the cushion body, the inner tube of the air guide tube is connected with the air blowing port, the blocking plate is located in the air guide tube, the fan mounting frame is installed on the inner wall of the cushion body, the fan is fixed on the fan mounting frame, a fan mounting frame air inlet is provided on the fan mounting frame corresponding to the air outlet of the fan, the fan mounting frame air inlet is sealed and connected with the inner tube of the air guide tube, a rainwater diversion groove is provided on the air guide tube corresponding to the air blowing port, and a hose for pouring rainwater to the outside is provided on the outlet of the rainwater diversion groove.

2. The electric vehicle ventilated seat cushion for preventing rainwater backflow as claimed in claim 1, characterized in that: The blocking plate driving member includes a blocking plate positioning frame and an elastic member arranged in the air guide tube, one end of the elastic member is fixedly connected to the blocking plate positioning frame, and the other end of the elastic member is fixedly connected to the blocking plate.

3. The electric vehicle ventilated seat cushion for preventing rainwater backflow as claimed in claim 2, characterized in that: The elastic member is a spring or an elastic rope.

4. The electric vehicle ventilated seat cushion for preventing rainwater backflow as claimed in claim 1, characterized in that: The fan mounting frame is detachably connected to the inner wall of the cushion body, and the fan mounting frame and the inner wall of the cushion body form a cavity for circuit installation. The fan is installed at the bottom of the cavity, and the air guide tube is located in the cavity.

5. The electric vehicle ventilated seat cushion for preventing rainwater backflow as claimed in claim 1, characterized in that: The top surface of the blocking plate is an umbrella-shaped structure, a blocking platform is provided at the bottom of the blocking plate, and the air guide tube is provided in a blocking surface that cooperates with the blocking platform.

6. The electric vehicle ventilated seat cushion for preventing rainwater from flowing back as claimed in claim 5, characterized in that: The rainwater diversion groove is arranged outside the blocking surface, and the outlet of the rainwater diversion groove is arranged on the outer side wall of the air guide tube.

7. The electric vehicle ventilated seat cushion for preventing rainwater from flowing back as claimed in claim 5, characterized in that: The air guide tube is provided with a trumpet-shaped guide wall connected with the outer side wall of the rainwater backflow groove.

8. The electric vehicle ventilated seat cushion for preventing rainwater backflow as claimed in claim 1, characterized in that: A first conical guide surface is provided at the bottom of the blocking plate, and a second conical guide surface matching the first conical guide surface is provided on the cylindrical inner wall of the air guide tube.

9. The electric vehicle ventilated seat cushion for preventing rainwater backflow as claimed in claim 1, characterized in that: The cushion body includes a support plate, a buffer layer and an outer skin layer. The buffer layer is located on the support plate, the outer skin layer wraps the buffer layer, the outer skin layer is bonded to the support plate, the air guide tube is fixedly connected to the support plate, the air outlet passes through the outer skin layer, the buffer layer and the support plate, and the outer skin layer passes through the air outlet and is bonded to the support plate.

10. The electric vehicle ventilated seat cushion for preventing rainwater backflow as claimed in claim 1, characterized in that: The air guide tube is sealed and connected to the inner side wall of the air inlet of the fan mounting frame through waterproof foam.

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