Pressure release valve

Abstract

The outer side of one end of a shell is used for being communicated with a ventilation opening in the tail of an automobile, a plurality of arc-shaped air outlet channels are formed in the shell, the arc of an air inlet in one end of each arc-shaped air outlet channel faces upwards, valve blades are correspondingly arranged at an air outlet in the other end of each arc-shaped air outlet channel, and every two adjacent arc-shaped air outlet channels are separated through a partition plate; a plurality of sealing step surfaces corresponding to the valve blades are arranged at an air outlet in the other end of the arc-shaped air outlet channel, and the valve blades cover the sealing step surfaces to form sealing. The connecting structure has the advantages of convenience in clamping connection, easiness in disassembly and assembly, capability of reducing noise, good sealing performance and difficulty in water inflow.

Description

Technical Field

[0001] The utility model relates to a pressure relief valve. Background Art

[0002] The existing pressure relief valves for automobiles are mainly installed on both sides of the vehicle body tail, which play a role in adjusting the pressure difference between the vehicle cabin and the outside world. When the vehicle is running at high speed, the pressure inside the vehicle is greater than the outside pressure, and the pressure relief valve will open to allow the outside air flow to enter the vehicle to balance the pressure difference. Moreover, if the vehicle wades through water exceeding the lower end of the pressure relief valve, the vehicle interior is likely to get water in. Content of the Utility Model

[0003] To solve the above problems, a pressure relief valve is specially made.

[0004] To achieve the above object, the utility model is solved by the following technical solutions: A pressure relief valve includes a valve blade and a housing. One end of the housing is used to communicate with the ventilation opening at the vehicle tail. The housing is provided with a plurality of arc-shaped air outlet channels. The arc of the air inlet at one end of the arc-shaped air outlet channel faces upward. A valve blade is correspondingly arranged at the air outlet of the other end of the arc-shaped air outlet channel. The adjacent arc-shaped air outlet channels are separated by a partition; at the air outlet of the other end of the arc-shaped air outlet channel, there are a plurality of sealing step surfaces corresponding to the valve blade, and the valve blade covers the sealing step surface to form a seal.

[0005] Furthermore, sound insulation pads are provided on the partition and the wall of the arc-shaped air outlet channel.

[0006] Furthermore, an outer edge is provided on the outside of the air outlet of the housing, and a clamping groove for the wall of the ventilation opening at the vehicle tail is provided on the back of the outer edge.

[0007] Furthermore, the clamping groove is an isosceles trapezoid with a smaller outer side and a larger inner side.

[0008] Furthermore, a plurality of rubber protrusions are provided on the upper and lower sides of the isosceles trapezoid.

[0009] Furthermore, the rubber protrusions gradually approach the center from the outside to the inside.

[0010] The beneficial effects of the utility model are as follows: The clamping connection is convenient, easy to disassemble and install, can reduce noise, and has good sealing performance and is not easy to get water in. Description of the Drawings

[0011] Figure 1 It is a structural schematic diagram of a pressure relief valve.

[0012] Figure 2 It is a structural schematic diagram without the valve blade.

[0013] Figure 3 It is a structural schematic diagram of the outer edge.

[0014] Figure 4 It is a sectional view without the valve blade.

[0015] Figure 5 It is a schematic diagram of the engagement groove structure. DETAILED DESCRIPTION

[0016] The following will be combined with the attached embodiment of the present utility model Figures 1-5 , the technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0017] Embodiment 1 A pressure relief valve comprises a valve blade 2 and a shell 1, wherein the outer side of one end of the shell is used to communicate with the rear air vent of the automobile, and a plurality of independent arc-shaped air outlet channels 3 are arranged in the shell, an air inlet 4 at one end of the arc-shaped air outlet channel is arc-shaped upward, and a valve blade is arranged corresponding to the air outlet 5 at the other end of the arc-shaped air outlet channel, and adjacent arc-shaped air outlet channels are separated by a partition 6; a plurality of sealing step surfaces 7 corresponding to the valve blades are arranged at the air outlet at the other end of the arc-shaped air outlet channel, and the valve blades cover the sealing step surfaces to form a seal.

[0018] A pressure relief valve, wherein a partition plate and a wall of an arc-shaped air outlet channel are provided with sound insulation pads.

[0019] A pressure relief valve, wherein an outer edge 8 is arranged on the outer side of an air outlet of a shell, and a wall engaging groove 9 of a rear air vent of an automobile is arranged on the back side of the outer edge.

[0020] A pressure relief valve, wherein a clamping groove is an isosceles trapezoid with a small outer portion and a large inner portion.

[0021] A pressure relief valve is provided with a plurality of rubber protrusions 10 on the upper and lower sides of an isosceles trapezoid.

[0022] A pressure relief valve, wherein the rubber protrusions gradually move toward the center from the outside to the inside.

[0023] A pressure relief valve, the diaphragm is arc-shaped.

[0024] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A pressure relief valve, comprising a valve blade and a housing, wherein the outer side of one end of the housing is used to communicate with a rear vent of a vehicle, characterized in that: A plurality of arc-shaped air outlet channels are arranged in the shell body, the air inlet at one end of the arc-shaped air outlet channel is arc-shaped and faces upward, and a valve blade is arranged corresponding to the air outlet at the other end of the arc-shaped air outlet channel, and adjacent arc-shaped air outlet channels are separated by a partition; a plurality of sealing step surfaces corresponding to the valve blades are arranged at the air outlet at the other end of the arc-shaped air outlet channel, and the valve blades cover the sealing step surfaces to form a seal.

2. A pressure relief valve according to claim 1, characterized in that: Sound insulation pads are arranged on the partition plate and the wall of the arc-shaped air outlet channel.

3. A pressure relief valve according to claim 1, characterized in that: An outer edge is arranged on the outer side of the air outlet of the shell body, and a clamping groove of the wall of the rear air vent of the automobile is arranged on the back side of the outer edge.

4. A pressure relief valve according to claim 3, characterized in that: The engaging groove is an isosceles trapezoid that is small outside and large inside.

5. A pressure relief valve according to claim 4, characterized in that: A plurality of rubber protrusions are arranged on the upper and lower sides of the isosceles trapezoid.

6. A pressure relief valve according to claim 5, characterized in that: The rubber protrusions gradually move toward the center from the outside to the inside.

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