JP2016008005A - Camera lens cleaning structure of back monitor device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera lens cleaning structure of a back monitor device for automobile which is capable of removing water droplets or stain attached on a camera lens by a simple structure, and does not cause increase of a cost or weight, nor deteriorates productivity.SOLUTION: In the case where a rear wiper device 2 driven to be rotated by a motor 3, a camera 6 for back monitor device, and an air nozzle 11 which injects air toward a lens 6a of the camera 6 are disposed on a back door 1, a compressed air generating mechanism 8 which generates compressed-air by using rotation of the motor 3 is provided for the back door 1, and an ejection port of the mechanism 8 and the air nozzle 11 are communicated with each other.

Description

  The present invention relates to a camera lens cleaning structure that removes water droplets and dirt adhering to a camera lens of an automotive back monitor device.

  In a back monitor device of an automobile, there is a problem that water droplets or dirt adheres to a lens of a camera mounted on the back door on a rainy day or the like, and it is difficult to see the state behind the vehicle. As a conventional structure that solves this problem, for example, in Patent Document 1, a passenger compartment air conditioner and a nozzle disposed on a back door are connected by a pipe, and air that has been air-conditioned is jetted toward a camera lens. Such a cleaning system has been proposed.

JP 2012-132988 A

In the conventional structure, usually, the air conditioner for the passenger compartment mounted in the front part of the vehicle and the back monitor camera disposed in the rear end part of the vehicle are connected by piping. As a result, the cost and weight increase, and the productivity deteriorates.

  The present invention has been made in view of the above-described conventional circumstances, and an automotive back monitor that can remove water droplets and dirt adhering to a camera lens while suppressing an increase in cost and weight and a deterioration in productivity with a simple structure. It is an object to provide a camera lens cleaning structure of an apparatus.

The present invention relates to an automotive back monitor device in which a rear wiper device that is rotationally driven by a motor, a camera for a back monitor device, and an air nozzle that injects air toward the lens of the camera are arranged on the back door. In the camera lens cleaning structure,
The back door is provided with a compressed air generating mechanism that generates compressed air using the rotation of the motor, and the discharge port of the compressed air generating mechanism communicates with the air nozzle.

  According to the camera lens cleaning structure of the back monitor apparatus according to the present invention, the compressed air is generated by utilizing the rotation of the motor for the rear wiper that is conventionally provided in the back door. Compared to the conventional structure in which air from the air conditioner is sent through a long pipe, the structure is simple, and the entire apparatus can be made compact.

In addition, since the camera lens cleaning structure is configured by generating compressed air using a member conventionally provided in the back door, it is possible to suppress an increase in cost and weight and a deterioration in productivity.

It is the perspective view which looked at the automobile to which the camera lens washing structure of the back monitor device concerning Example 1 of the present invention was applied from the slanting back. It is a schematic diagram of the compressed air production | generation mechanism of the said washing | cleaning structure. It is a perspective view of the camera of the back monitor device.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 3 are views for explaining a camera lens cleaning structure of a back monitor device for an automobile according to Embodiment 1 of the present invention.

  In the figure, reference numeral 1 denotes a back door that opens and closes a back door opening 1a. The back door 1 has a schematic structure in which an outer panel 1b and an inner panel form an intermediate closed cross-sectional space, and a door glass 1d is fitted in an opening 1c at the top of the door.

The back door 1 is provided with a rear wiper device 2 for wiping the outer surface of the door glass 1d. In the rear wiper device 2, a wiper motor 3 is disposed in the closed cross-sectional space, an output shaft 3a of a speed reduction mechanism 3b connected to the wiper motor 3 is protruded rearward from the outer panel 1b, and a wiper arm 4 is provided at the protruding portion. The wiper blade 5 is fixed and supported at the tip of the wiper arm 4.

On the outer panel 1 b of the back door 1, a camera case 7 that houses the camera 6 of the back monitor device is disposed so as to be close to the rear wiper device 2. The lens 6a of the camera 6 is disposed so as to be directed obliquely downward and rearward of the vehicle. An air nozzle 11 is disposed on the outer surface of the outer panel 1b so as to be directed to the lens 6a of the camera 6.

The back door 1 of the present embodiment is provided with a compressed air generating mechanism 8 that generates compressed air by utilizing the rotation of the wiper motor 3. The compressed air generating mechanism 8 is connected to the inner part of the back door 1 of the output shaft 3a of the wiper motor 3. The compressed air generating mechanism 8 is disposed in the back door 1 and pressurizes and discharges air. And a pressure accumulating chamber 10 for accumulating air from the air delivery chamber 9.

The air delivery chamber 9 and the pressure accumulating chamber 10 are communicated by an upstream hose 12a, and the pressure accumulating chamber 10 and the air nozzle 11 are communicated by a downstream hose 12b. The upstream hose 12a is provided with a one-way valve 13a that allows only the flow to the pressure accumulating chamber 10 side, and the downstream hose 12b has the pressure when the pressure in the pressure accumulating chamber 10 exceeds a predetermined pressure. A pressure-regulating one-way valve 13b that allows only the flow toward the air nozzle 11 is provided.

  The air delivery chamber 9 has a structure in which a blade 15 is swingably disposed in a fan-shaped casing 14. The base 15 a of the blade 15 is fitted and fixed to the output shaft 3 a of the wiper motor 3 and is in sliding contact with the inner surface of the base 14 a of the casing 14. An air introduction port 14c is formed in the side wall 14b of the casing 14, and the air introduction port 14c is made of a thin plate, and one end thereof is fixed by a reed valve 14d fixed to the edge of the air introduction port 14c. Opened and closed.

In the structure of this embodiment, when the rear wiper device 2 is operated, the wiper arm 4 reciprocally swings, the wiper blade 5 wipes the surface of the door glass 1d, and the blade 15 also swings. When the blade 15 swings in the direction of arrow a, the reed valve 14d opens the air inlet 14c and air is introduced into the casing 14, and when it swings in the direction of arrow b, the reed valve 14d closes and the air is pressurized. Then, the pressure accumulation chamber 10 is blown. For example, when the wiper arm 4 is reciprocated 5-6 times, the pressure in the pressure accumulating chamber 10 becomes a predetermined value or more, the pressure-regulating one-way valve 13b is opened, and the compressed air is transferred from the air nozzle 11 to the lens 6a of the camera 6. It is injected towards.

According to the camera lens cleaning structure of the back monitor device according to the present embodiment, the compressed air is generated by utilizing the rotation of the wiper motor 3 of the rear wiper device 2 conventionally provided in the back door 1. Compared to the conventional structure in which air from the air conditioner provided at the front is blown through a long pipe, compressed air can be injected more efficiently, and the structure is simple and the entire apparatus can be made compact. . Further, since the camera 6 of the back monitor device is disposed close to the rear wiper device 2, the device can be made compact in this respect as well.

Moreover, since the camera lens cleaning structure is configured only by adding the air delivery chamber 9, the pressure accumulating chamber 10, etc., using the members conventionally provided in the back door 1, an increase in cost, weight, and productivity can be achieved. Deterioration can be suppressed.

  In the embodiment, the compressed air generating mechanism 8 is provided with the air delivery chamber 9 and the pressure accumulating chamber 10, and the air in the pressure accumulating chamber 10 is injected when the pressure in the pressure accumulating chamber 10 exceeds a predetermined value. Although comprised as mentioned above, the compressed air production | generation mechanism of this invention is not limited to the said Example. For example, a scroll compressor may be connected to the output shaft 3a of the wiper motor 3, and the compressed air from the compressor may be directly injected from the air nozzle 11.

DESCRIPTION OF SYMBOLS 1 Back door 2 Rear wiper apparatus 3 Motor 6 Camera 6a Camera lens 8 Compressed air production | generation mechanism 11 Air nozzle

Claims (1)

A camera lens cleaning structure for a back monitor device for an automobile, in which a rear wiper device that is rotationally driven by a motor, a back monitor device camera, and an air nozzle that injects air toward the lens of the camera are arranged on the back door In
An automotive back characterized in that the back door is provided with a compressed air generating mechanism for generating compressed air by utilizing rotation of the motor, and the discharge port of the compressed air generating mechanism and the air nozzle are communicated with each other. Monitor lens camera lens cleaning structure.

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