CN115534639A

CN115534639A - Check valve formula blanking cover and car

Info

Publication number: CN115534639A
Application number: CN202211347463.6A
Authority: CN
Inventors: 张雯; 甘雨; 陈家辉; 蒲俊华
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2022-12-30

Abstract

The invention relates to a one-way valve type blanking cover and an automobile, wherein a clamping structure used for being clamped with a liquid leakage hole in a back door is arranged on the one-way valve type blanking cover, a liquid drainage channel used for discharging liquid in the back door is arranged in the one-way valve type blanking cover, and a one-way valve plate capable of opening and closing the liquid drainage channel is arranged in the liquid drainage channel. The automobile comprises a back door welding assembly provided with a liquid leakage hole and a one-way valve type blocking cover of any one of the assemblies, wherein the one-way valve type blocking cover is clamped in the liquid leakage hole of the back door welding assembly. According to the invention, through reasonably arranging the structure of the check valve type blocking cover, the drainage performance and the air tightness of the liquid leakage hole of the back door can be considered.

Description

Check valve formula blanking cover and car

Technical Field

The invention relates to an automobile, in particular to a check valve type plug cover and an automobile.

Background

A large number of holes and seams are formed in the car body, and the sound insulation capability is influenced by the car body sealing treatment in a crucial manner. The control of the automobile sealing performance is the basis and the premise for guaranteeing the NVH performance of the whole automobile. The better the air tightness, the better other performances of the automobile, such as small water leakage risk, good heat preservation effect of the air conditioner, high energy efficiency, good sound insulation effect and higher comfort for passengers. The whole vehicle air tightness is composed of interior trim vehicle body air tightness, white vehicle body air tightness, four-door air tightness and back door air tightness. The lower region of the existing automobile back door welding assembly is generally provided with a liquid leakage hole, and the liquid leakage hole is used for coating electrophoresis liquid drainage and drainage after water enters the interior of a daily back door. The arrangement of the liquid leakage hole in the lower area of the automobile back door welding assembly can cause the following technical problems: dust accumulation easily occurs at the liquid leakage hole in the using process of the automobile; when the automobile runs, the leakage hole is communicated with the inside and the outside to cause poor local air tightness, so that the sealing performance of the whole automobile is influenced.

Disclosure of Invention

It is an object of the present invention to provide a check valve closure and an automobile to alleviate or eliminate at least one of the above-mentioned technical problems.

According to the check valve type blanking cover, a clamping structure used for being clamped with a liquid leakage hole in a back door is arranged on the check valve type blanking cover, a liquid drainage channel used for discharging liquid in the back door is arranged in the check valve type blanking cover, and a check valve plate capable of opening and closing the liquid drainage channel is arranged in the liquid drainage channel.

Optionally, the check valve type plug cover includes a plug cover body, the plug cover body includes a side wall and a bottom wall, the side wall and the bottom wall enclose a liquid discharge groove, a liquid discharge port is arranged on the side wall, and the liquid discharge port and the liquid discharge groove form the liquid discharge channel.

Optionally, the liquid outlet is provided with the check valve plate.

Optionally, the edge of one side of the check valve plate, which is close to the notch of the liquid discharge groove, is a fixed end connected with the blocking cover body, and the check valve plate can swing around the fixed end to open a liquid discharge channel; and a supporting part is arranged in the liquid discharge port and used for supporting the one-way valve plate so as to limit the opening direction of the one-way valve plate.

Optionally, the side wall is provided with at least two liquid discharge ports.

Optionally, the blanking cover body is made of plastic, and the one-way valve plate is made of rubber.

Optionally, the thickness of the check valve plate is 0.5mm.

Optionally, one end of the side wall close to the notch of the liquid discharge tank is provided with a circle of outer flange, a clamping rib is arranged on the outer side face of the side wall, and a clamping groove used for clamping the edge of the periphery of the liquid leakage hole on the back door is formed between the outer flange and the clamping rib.

Optionally, an end surface of the outer flange on the side close to the bottom wall is inclined from inside to outside to a side away from the bottom wall.

The automobile comprises a back door welding assembly provided with a liquid leakage hole and the check valve type blanking cover, wherein the check valve type blanking cover is clamped in the liquid leakage hole of the back door welding assembly.

According to the invention, through reasonably arranging the structure of the check valve type blocking cover, the drainage performance and the air tightness of the liquid leakage hole of the back door can be considered.

Drawings

FIG. 1 is a schematic view of a one-way valve closure according to an embodiment;

FIG. 2 is a schematic structural view of a tailgate welding assembly according to an embodiment;

FIG. 3 is a schematic view of the installation of the check valve closure according to an embodiment;

FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 3;

fig. 5 is a sectional view B-B of fig. 3.

In the figure: 1-check valve type blanking cover; 2, a back door welding assembly; 101-a blanking cover body; 102 — an outer flange; 103-clamping ribs; 104-liquid discharge port; 105-one-way valve plate; 106-drain tank; 107-a support; 201-weep hole.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, in the check valve type blanking cover 1, a clamping structure for clamping with a liquid leakage hole 201 on a back door is provided on the check valve type blanking cover 1, a liquid discharge channel for discharging liquid in the back door is provided in the check valve type blanking cover 1, a check valve sheet 105 capable of opening and closing the liquid discharge channel is provided in the liquid discharge channel, and the opening direction of the check valve sheet 105 is the same as the discharge direction of the liquid in the back door. By adopting the scheme, when water in the backdoor needs to be discharged, the one-way valve plate 105 is driven to be opened by utilizing the gravity of the water, and the water in the backdoor can be discharged by utilizing the liquid discharge channel; when no water exists in the backdoor or the gravity of the water is not enough to drive the one-way valve plate 105 to open, the one-way valve plate 105 is closed, and the sealing performance of the one-way valve type plugging cover 1 is ensured. That is to say, the check valve type blanking cover 1 can take into account the drainage performance and the air tightness of the back door liquid leakage hole 201, and can prevent the accumulation of dirt at the liquid drainage hole.

In some embodiments, the check valve type closure 1 includes a closure body 101, the closure body 101 includes a side wall and a bottom wall, the side wall and the bottom wall form a liquid discharge groove 106, a liquid discharge port 104 is disposed on the side wall, and the liquid discharge port 104 and the liquid discharge groove 106 form a liquid discharge channel.

In some embodiments, a one-way valve plate 105 is disposed in the drain opening 104.

In some embodiments, in order to improve the drainage capacity, at least two liquid discharge ports 104 are provided on the side wall, and a check valve plate 105 is provided in each of the at least two liquid discharge ports 104.

In some embodiments, the edge of the one-way valve sheet 105 on the side close to the notch of the drainage groove 106 is a fixed end to which the blanking cover body 101 is connected, and the one-way valve sheet 105 can swing around the fixed end to open the drainage channel.

In some embodiments, a support portion 107 is provided in the liquid discharge port 104, and the support portion 107 is used to support the check valve sheet 105 to define the opening direction of the check valve sheet 105, that is, the support portion 107 is provided upstream of the check valve sheet 105. As a preferred embodiment, the surface of the support part 107 for supporting the check valve sheet 105 is disposed to be inclined toward the surface for supporting the check valve sheet 105, which is advantageous to improve the airtightness at the check valve sheet 105.

In some embodiments, when the check valve plate 105 closes the drainage passage, the edge of the check valve plate 105 other than the fixed end is supported on the support portion 107. By adopting the scheme, the one-way valve plate 105 has better air tightness when being closed.

In some embodiments, the plug body 101 is made of plastic, the check valve sheet 105 is made of rubber, and the check valve sheet 105 can be connected to the plug body 101 through injection molding. The blocking cover body 101 made of plastic has higher rigidity, can play a role in supporting, prevents the one-way valve sheet 105 from being extruded in the installation and use processes, and is favorable for ensuring the normal work of the one-way valve sheet 105; the rubber check valve sheet 105 is easy to elastically deform and can be smoothly opened under the action of the gravity of water in the back door, and meanwhile, the rubber check valve sheet 105 has the advantage of good sealing performance and is beneficial to ensuring the air tightness of the check valve type blanking cover 1. As a preferred scheme, the thickness of the check valve plate 105 is 0.5mm, and the check valve plate 105 with the thickness of 0.5mm is adopted, so that the drainage performance and the air tightness of the liquid leakage hole of the backdoor can be considered.

In some embodiments, the clamping rib 103 is made of plastic, the outer flange 102 is made of rubber, the outer flange 102 made of rubber has good sealing performance, and the clamping rib made of plastic can play a good supporting role.

In some embodiments, a circle of outer flange 102 is arranged at one end of the side wall close to the notch of the liquid discharge groove 106, a clamping rib 103 is arranged on the outer side surface of the side wall, and a clamping groove for clamping the peripheral edge of the liquid discharge hole 201 on the back door is formed between the outer flange 102 and the clamping rib 103. The outer flange 102 and the snap ribs 103 form a snap structure. After the check valve type blanking cap 1 is clamped with the liquid leakage hole 201 on the back door, the outer flange 102 can cover the gap between the liquid leakage hole 201 and the blanking cap body 101, and the improvement of the sealing performance and the prevention of the accumulation of dirt at the liquid discharge hole are facilitated.

In some embodiments, the end surface of the outer flange 102 on the side of the bottom wall tapers from the inside to the outside to the side away from the bottom wall. The end face of the outer flange 102 close to the bottom wall is set to be an inclined plane, so that the outer flange 102 can be in interference fit with the liquid leakage hole 201 on the back door, and the air tightness of the liquid leakage hole 201 is improved; particularly, when the outer flange 102 is made of a flexible material, the air tightness of the liquid leakage hole 201 can be ensured by the interference fit between the outer flange 102 and the liquid leakage hole 201.

The automobile of the invention, as shown in fig. 2-5, comprises a back door welding assembly 2 provided with a liquid leakage hole 201 and a check valve type blanking cover 1 as described above, wherein the check valve type blanking cover 1 is clamped in the liquid leakage hole 201 of the back door welding assembly 2. When water in the back door needs to be discharged, the one-way valve plate 105 is driven to open by the gravity of the water, the water in the back door can be discharged by the liquid discharge channel, and the discharge path of the water is shown by an arrow in fig. 5; when no water exists in the backdoor or the gravity of the water is not enough to drive the one-way valve plate 105 to be opened, the one-way valve plate 105 is closed, the sealing performance of the one-way valve type plugging cover 1 is ensured, and the air tightness of the liquid leakage hole 201 is further ensured.

Taking a vehicle model modified at a middle period of the company as an example, in order to further improve the sealing performance of the whole vehicle, weak points of the whole vehicle are checked, structural modification (which can influence the development progress) is not related to the greatest extent, factors such as the cost of an optimization scheme and the like are comprehensively evaluated, 2L/s contribution is made to the air tightness of the whole vehicle by leakage at the water leakage hole of the back door, and the development target is finally achieved after the water leakage hole of the back door is sealed by adopting the one-way valve type plugging cover.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Claims

1. The one-way valve type blanking cover is characterized in that a clamping structure used for being clamped with a liquid leakage hole in a back door is arranged on the one-way valve type blanking cover, a liquid drainage channel used for supplying liquid in the back door to be discharged is arranged in the one-way valve type blanking cover, and a one-way valve plate capable of being opened and closed is arranged in the liquid drainage channel.

2. A one-way valve type closure according to claim 1, wherein the one-way valve type closure comprises a closure body, the closure body comprises a side wall and a bottom wall, the side wall and the bottom wall form a liquid discharge groove, a liquid discharge port is arranged on the side wall, and the liquid discharge port and the liquid discharge groove form the liquid discharge channel.

3. The check valve type cap according to claim 2, wherein the check valve plate is disposed in the drain port.

4. The check valve type plug according to claim 3, wherein the edge of the check valve plate on the side close to the notch of the drainage groove is a fixed end to which the plug body is connected, and the check valve plate can swing around the fixed end to open the drainage channel; and a supporting part is arranged in the liquid discharge port and used for supporting the one-way valve plate so as to limit the opening direction of the one-way valve plate.

5. The check valve closure of claim 2, wherein at least two of said ports are provided in said sidewall.

6. The check valve type plug of claim 2, wherein the plug body is made of plastic, and the check valve plate is made of rubber.

7. The check valve closure of claim 6, wherein said check valve plate has a thickness of 0.5mm.

8. The check valve type plug according to claim 2, wherein a ring of outer flange is provided at an end of the side wall close to the notch of the drain groove, a clamping rib is provided on an outer side surface of the side wall, and a clamping groove for clamping an edge of the periphery of the drain hole on the back door is formed between the outer flange and the clamping rib.

9. The check valve closure according to claim 8, wherein an end surface of said outer flange on a side of said bottom wall is inclined gradually from inside to outside toward a side away from said bottom wall.

10. An automobile, comprising a back door welding assembly provided with a liquid leakage hole and a check valve type blanking cover according to any one of claims 1 to 9, wherein the check valve type blanking cover is clamped in the liquid leakage hole of the back door welding assembly.