Rainproof shielding structure of demisting sheet of outside rear-view mirror of commercial vehicle

Abstract

The utility model relates to a rain-proof shielding structure of a demisting piece of an outside rear-view mirror of a commercial vehicle, and belongs to the field of rear-view mirrors of commercial vehicles. According to the rainproof shielding structure of the demisting piece of the outside rear-view mirror of the commercial vehicle, the opening corresponding to the contact of the defrosting heating piece is formed in the upper portion of the mirror surface supporting plate, the rainproof shielding structure protruding out of the plane of the mirror surface supporting plate is arranged on the opening to shield the upper portion and the two sides, and rainwater is led out through the upper corner drainage fillets and the two side corner drainage fillets. The structure of the mirror surface supporting plate can be optimized and improved, so that the risk that water enters a mirror body due to the fact that the mirror surface is adjusted to a limit angle according to the vertical falling direction of rainwater is avoided, and the defrosting heating piece is protected against failure or short circuit caused by water inflow of a contact.

Description

Technical Field

[0001] The utility model relates to a rainproof shielding structure of a defogger sheet of an exterior rearview mirror of a commercial vehicle, belonging to the field of rearview mirrors for commercial vehicles. Background Art

[0002] When commercial vehicles are driving on rainy days, raindrops are easily caught on the exterior rearview mirrors, causing blurred vision and unclear vision, which affects safe driving. In order to provide commercial vehicle drivers with a safer and more comfortable driving experience, the exterior rearview mirror assembly of commercial vehicles with defrost and heating functions has become a standard configuration for the entire vehicle. This function has been popularized to all vehicle series in actual applications, providing important help for drivers in severe weather conditions.

[0003] However, in the actual application of some commercial vehicle exterior rearview mirrors, the heating plate contacts are often in good and bad condition due to water ingress caused by rainy weather, which affects the user experience. Existing solutions usually require auxiliary methods such as adding a mirror eyebrow to the mirror shell or affixing a waterproof film on the mirror surface to improve, or form a drainage barrier by designing a drainage duct. For example, the rainproof device for the exterior rearview mirror with application number 202022945724.7 uses an air supply duct to actually open an air outlet connected to the air duct on the rearview mirror shell, and the air outlet is located above the mirror body to form a wind curtain barrier above the mirror body to block the rain. However, this method only solves the problem of internal drainage of the exterior rearview mirror body. Through the analysis and judgment of a series of problems feedback from the exterior rearview mirror assembly after long-term driving of the vehicle, it is found that the existing technology has not made structural optimization and improvement for the heating plate and the mirror support plate, and cannot meet the needs of drivers in rainy environments to use the heating plate to provide a clear auxiliary field of vision. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a rainproof shielding structure for a defogger plate of an exterior rearview mirror of a commercial vehicle. The utility model can optimize and improve the structure of the mirror support plate, thereby avoiding the risk of water entering the mirror body due to the mirror being adjusted to an extreme angle in the vertical direction of rain falling, and protecting the defrost heating plate from water ingress failure or short circuit of the contacts due to water ingress.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a rainproof shielding structure for a defogger plate of an exterior rearview mirror of a commercial vehicle, comprising at least a defrost heating plate of the exterior rearview mirror, an exterior rearview lens and a mirror support plate, wherein the defrost heating plate is located between the exterior rearview lens and the mirror support plate, a contact connected to the outside electricity is provided on the back of the defrost heating plate, an opening corresponding to the contact of the defrost heating plate is provided above the circular mounting base of the mirror support plate, a rainproof shielding structure is provided above the opening, which wraps the upper part of the opening from the top and both sides respectively, the rainproof shielding structure is provided at the upper part of the opening and protrudes from the plane of the mirror support plate, the upper surface of the protrusion of the rainproof shielding structure is in the shape of an arc, and transition fillets for drainage are provided between the upper and both side corners where the protrusion contacts the plane of the mirror support plate.

[0006] The mirror support panel has an opening close to the cab side.

[0007] The protruding lower edge of the rain shielding structure is a baffle inclined toward the inside of the rearview mirror cover.

[0008] A drainage trough is provided above the rain shielding structure to drain rainwater quickly and prevent water droplets from blurring the vision on the mirror surface.

[0009] The contacts between the defrost heating element and the external electrical connection are designed to be waterproof to ensure normal operation even in adverse weather conditions.

[0010] The angle between the arc-shaped upper surface of the rainproof shielding structure and the plane of the mirror support plate is an obtuse angle, so as to better guide the rainwater to flow down and prevent water droplets from being retained on the rainproof shielding structure.

[0011] According to the above technical solution, the rainproof shielding structure of the defogger sheet of the exterior rearview mirror of a commercial vehicle provided by the utility model shields the top and both sides respectively through the opening above the mirror support plate corresponding to the contact point of the defrosting heating sheet and the rainproof shielding structure protruding from the plane of the mirror support plate on the opening, and drains the rainwater through the top and both sides of the corner drainage fillet. Compared with the prior art, the utility model has the following advantages:

[0012] (1) Because the lower edge of the rain shield structure in the technical solution adopted by the utility model is a baffle inclined downward. There is a drainage groove on the top, which can quickly drain water. The angle between the arc surface of the rain shield structure and the plane of the mirror support plate is an obtuse angle, so the utility model can quickly guide rainwater to drain and prevent water droplets from blurring the vision.

[0013] (2) Because the opening of the mirror support plate of the utility model is close to the side of the cab, and the lower edge of the protruding rainproof shielding structure is a baffle inclined toward the inside of the rearview mirror cover. Therefore, when the mirror is adjusted to the extreme angle and the rain falls vertically, the utility model can still ensure the smooth discharge of rainwater, avoiding failure caused by water ingress to the contact of the defogger heating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of rearview mirror structure;

[0015] Figure 2 Side view of mirrored pallet;

[0016] Figure 3 Main view of the mirror support plate and partial view of the rainproof shielding structure;

[0017] Figure 4 , cross-sectional view of rain shielding structure.

[0018] In the figure: 1. External rearview mirror; 2. Defrost heating plate; 3. Mirror support plate; 4. Rainproof shielding structure; 5. Defrost heating plate contacts. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0020] In the technical solution provided by the utility model, a rainproof shielding structure of a defogger sheet of a commercial vehicle exterior rearview mirror is provided, such as Figure 1 As shown, it at least includes a defrost heating plate 2 of the exterior rearview mirror, an exterior rearview lens 1 and a mirror support plate 3. The defrost heating plate 2 is located between the exterior rearview lens 1 and the mirror support plate 3. A contact for connecting to the outside is provided on the back of the defrost heating plate 2. The contact for connecting the defrost heating plate 2 to the outside is designed to be waterproof to ensure normal operation even under adverse weather conditions.

[0021] An opening corresponding to the defrost heating plate contact 5 is provided above the circular mounting base of the mirror support plate 3, and the opening of the mirror support plate 3 is close to one side of the cab. A rainproof shielding structure 4 is provided above the opening to cover the upper part of the opening from above and both sides. Figure 2 and Figure 3 As shown, the rain shielding structure 4 is arranged at the upper part of the opening and protrudes from the plane of the mirror support plate 3. The upper surface of the protruding part of the rain shielding structure 4 is in an arc shape. A drainage groove is arranged above the rain shielding structure 4 to quickly drain rainwater and prevent water droplets from blurring the vision on the mirror surface. The lower edge of the protruding part of the rain shielding structure 4 is a baffle inclined toward the inside of the rearview mirror cover.

[0022] like Figure 4 As shown, the upper part and the two side corners where the protrusion contacts the plane of the mirror support plate 3 are provided with transition fillets for drainage. The angle between the arc-shaped upper surface of the rainproof shielding structure 4 and the plane of the mirror support plate 3 is an obtuse angle, so as to better guide the rainwater to flow down and prevent water droplets from being retained on the rainproof shielding structure 4.

[0023] In actual testing, this device uses high-pressure water to conduct impact tests. The distance between the nozzle and the test surface is (90°): (100±3) mm; the spraying time is 30s, and the nozzle sprays directly on the sample without using a water spray sweeping method. The rationality of the structure has been verified by the experiment and meets the requirement of no-fault reproduction, which can prove the rationality of this structure.

Claims

1. A rainproof shielding structure for a defogger sheet of an exterior rearview mirror of a commercial vehicle, comprising at least a defrosting heating sheet of the exterior rearview mirror, an exterior rearview lens and a mirror support plate, characterized in that: The defrost heating plate is located between the exterior rearview mirror and the mirror support plate, and a contact point connected to the outside is provided on the back of the defrost heating plate. An opening corresponding to the contact point of the defrost heating plate is provided above the circular mounting base of the mirror support plate, and a rainproof shielding structure is provided above the opening to cover the upper part of the opening from above and both sides. The rainproof shielding structure is arranged at the upper part of the opening and protrudes from the plane of the mirror support plate. The upper surface of the protruding part of the rainproof shielding structure is in an arc shape, and transition fillets for drainage are arranged above and between the corners on both sides where the protruding part contacts the plane of the mirror support plate.

2. The rainproof shielding structure of the defogger sheet of the exterior rearview mirror of a commercial vehicle according to claim 1, characterized in that: The mirror support panel has an opening close to the cab side.

3. The rainproof shielding structure of the defogger sheet of the exterior rearview mirror of a commercial vehicle according to claim 1, characterized in that: The protruding lower edge of the rain shielding structure is a baffle inclined toward the inside of the rearview mirror cover.

4. The rainproof shielding structure of the defogger sheet of the exterior rearview mirror of a commercial vehicle according to claim 1, characterized in that: A drainage trough is provided above the rain shielding structure to drain rainwater quickly and prevent water droplets from blurring the vision on the mirror surface.

5. The rainproof shielding structure of the defogger sheet of the exterior rearview mirror of a commercial vehicle according to claim 1, characterized in that: The contacts between the defrost heating element and the external electrical connection are designed to be waterproof to ensure normal operation even in adverse weather conditions.

6. The rainproof shielding structure of the defogger sheet of the exterior rearview mirror of a commercial vehicle according to claim 1, characterized in that: The angle between the arc-shaped upper surface of the rainproof shielding structure and the plane of the mirror support plate is an obtuse angle, so as to better guide the rainwater to flow down and prevent water droplets from being retained on the rainproof shielding structure.

Images