JPH0712095Y2 - Filter to prevent snow from entering the outside air inlet of the vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a filter for preventing snow from entering a vehicle outside air inlet,
The present invention relates to a filter structure that does not reduce the intake capacity due to snow adhesion.

[Prior Art] In a van-type vehicle, as shown in FIG. 4, an outside air inlet is provided to the front of the vehicle on a body panel B immediately after the headlight 2.
B1 is provided, and outside air is introduced into the passenger compartment through the inside / outside air switching damper 3 and the ventilation blower 4.

Although the running wind directly flows into the outside air inlet B1 while the vehicle is running, it is possible to efficiently introduce outside air. However, during snowfall, the snow mixed in the outside air reaches the damper 3 and blower 4 etc. and freezes, causing malfunction. May occur.

Therefore, conventionally, a plate mesh filter 1 is provided so as to cover the outside air introduction port B1 as shown in the figure to prevent snow from entering.

[Problems to be Solved by the Invention] By the way, in the above-described conventional snow-prevention filter, the amount of intake air is drastically reduced due to the adhesion of snow to the filter surface, and the introduction of outside air necessary for clearing the windshield cloud is insufficient. There was a problem of doing.

The present invention solves such a problem, and prevents snow from entering the outside air introduction port during snowfall, and ensures the outside air necessary for clearing the windshield from clouding. Intended to provide a filter.

[Means for Solving Problems] To explain the configuration of the present invention, a body filter B is provided with a mesh filter 1 that covers an outside air inlet B1 that opens downward toward the front of the vehicle and that is substantially impervious to snow. The filter 1 is formed in a half-container body having three side faces 1a and 1b and a bottom face 1c, and the side faces 1a and 1b are positioned so as to block outside air that blows backward from the front of the vehicle, and the bottom face 1c is , Are located substantially parallel to the outside air that blows backward from the front.

[Operation] Outside the time of snowfall, the outside air is efficiently introduced from the filter side surfaces 1a and 1b facing the inflow direction.

The above-mentioned filter side surface 1a facing the outside air inflow direction during snowfall,
Snow adheres to 1b to prevent it from entering the outside air inlet B1. On the other hand, the dynamic pressure of the outside air is low at the filter bottom surface 1c positioned substantially parallel to the outside air that blows through, so that snow does not adhere. Then, the outside air necessary for eliminating fog on the door glass is introduced from the filter bottom surface 1c.

Since the snow-prevention filter of the present invention is a semi-container body, the filter surface area can be made larger than that of the conventional plate filter, so that the snow adhesion density is reduced and a drastic decrease in the amount of outside air introduced at the adhesion part is avoided. To be

[Effects] According to the snow-prevention filter of the present invention, it is possible to effectively prevent the intrusion of snow and to reliably ensure the outside air for eliminating the fog of the wind glass, which is particularly necessary during snowfall.

[Embodiment] FIGS. 1 and 2 show an outside air introducing portion of a cab-over vehicle. FIG. 1 is a vertical sectional view and FIG. 2 is a horizontal sectional view.

In the figure, a body panel B immediately after the headlamp 2 is provided with an outside air introduction port B1 that opens to the front lower side, and the outside air introduction port B1 is passed through an upper inside air / outside air switching damper 3 and a ventilation blower 4 into the vehicle interior. It communicates with all ventilation ducts.

The outside air inlet B1 is provided with a filter 1 for preventing snow from entering, and the filter 1 is a half of a wire mesh consisting of a side surface 1a facing the front of the vehicle along the back surface of the headlamp 2, left and right side surfaces 1b, and a bottom surface 1c. It is a container. The wire mesh is 40-60 mesh.

When the vehicle is traveling, the traveling wind reaches the outside air introduction port B1 from the outer periphery of the headlamp 2 or the intake G1 of the radiator grill G as shown by the arrow in the figure, and efficiently enters the ventilation duct mainly from the side surfaces 1a and 1b of the filter 1 described above. be introduced.

During snowfall, the above-mentioned running wind is mixed with snow.
It adheres to 1a and 1b and is collected, and does not enter the outside air inlet B1. On the other hand, the bottom surface 1c of the filter is hardly affected by the dynamic pressure of the traveling wind, and therefore snow is hardly attached. Then, the outside air is introduced from the bottom surface 1c, and the outside air necessary for eliminating the fogging of the windshield is secured.

Even if snow adheres to the bottom surface 1c of the filter, the adhered snow easily falls off.

FIG. 3 shows another embodiment of the present invention. In the figure, the filter 1 has a bottom surface 1c extending rearward of the vehicle beyond the opening edge of the outside air inlet B1. As a result, it is possible to increase the filter area where snow does not adhere.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention. FIG. 1 is a vertical sectional view of a vehicle outside air introducing portion provided with a snow trap filter, FIG. 2 is its horizontal sectional view, and FIG. FIG. 4 is a vertical cross-sectional view of a vehicle outside air introducing portion provided with a snow entry prevention filter according to another embodiment of the present invention, and FIG. 4 is a vertical sectional view of a vehicle outside air introducing portion showing a conventional example. 1 …… Snow entry prevention filter 1a, 1b …… Filter side 1c …… Filter bottom 2 …… Head lamp 3 …… Inside / outside air switching damper 4 …… Ventilation blower B …… Body panel B1 …… Outside air inlet

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shichirou Nishida 100 Kanayama, Ichiriyama-cho, Kariya city, Aichi Toyota Auto Body Co., Ltd. (72) Inventor, Akio Ogiso 1-1, Showa-cho, Kariya city, Aichi Nihon Denso Co., Ltd. Incorporated (72) Inventor Mitsuru Ogata 1 Toyota-cho, Toyota-cho, Aichi Prefecture Toyota Automobile Co., Ltd. (72) Inventor Masaaki Kosugi 1 Toyota-cho, Toyota-shi, Aichi Toyota Automobile Co., Ltd. (72) Inventor Kunishi Takehara 2-1-1 Taoyuan, Ikeda-shi, Osaka Daihatsu Industry Co., Ltd. (56) References: 61-200717 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A body panel is provided with an outside air inlet opening downward toward the front of the vehicle, and a mesh filter is provided to cover the outside air inlet and substantially not pass snow. The filter is composed of three side surfaces and a bottom surface. It is characterized in that it is formed in a half-container body and each side surface is positioned so as to block outside air that blows backward from the front of the vehicle, and the bottom surface is positioned substantially parallel to the outside air that blows backward from the front. A filter to prevent snow from entering the outside air inlet of the vehicle.