JP2008165093A - Deposit removing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deposit removing device capable of removing attached water droplets without shielding a visual field upon photographing by utilizing centrifugal force. <P>SOLUTION: The deposit removing device is characterized in that a water droplet removing filter and a motor are integrated. The deposit removing device comprises an outer cylinder 3 and an inner cylinder 2 accommodated by the outer cylinder 3. A rotor 4, a stator 5, a commutator 7, etc. are arranged between the two cylinders. The rotor is fixed to the inner cylinder. Electricity which is generated by external battery 15 moves through the rotor and generates a magnet field. By two magnetic fields of a magnetic field generated by a permanent magnet fixed to the outer cylinder and the magnetic field generated on the rotor, repulsing or attracting force is generated and high-speed rotation motion is transmitted to the inner cylinder. Thereby, the rotation is transmitted to a window 1 of the front part as well. The centrifugal force is generated on the surface of the window and the attached water droplets are splashed by the centrifugal force. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attached matter removing apparatus for securing a field of view by removing water droplets attached to a window located in the field of view of an object, for example, a window glass for a ship, a photographing lens for a camera, various sensors, etc. The present invention relates to an improvement of a deposit removing device suitable for the above.

  Conventionally, when taking an image during precipitation, in order to remove water droplets and snow adhering to the camera lens or filter, the water droplets are directly wiped off with a cloth or wiper.

  However, in the conventional technology, in the type using a wiper for removing water droplets during precipitation, there is a time loss until the water droplets are removed by the reciprocating motion of the wiper from the time when the water droplets are attached to the removed water droplets. In addition, since the field of view may be obstructed due to the reflection of the wiper or the like, the moment of the work of removing the water droplet is reflected in the video. Optical sensors, etc. may malfunction due to water droplets and snow during the rain.

  The present invention pays attention to the above points, and by rotating the filter itself without wiping off the water droplets directly, generating centrifugal force on the filter surface to quickly remove water droplets, snow, dust, etc. The objective is to ensure and maintain a clear and continuous view of the time.

  The present invention provides a fixed cylinder fixed to the water drop removal object side, a movable cylinder provided inside the fixed cylinder so as to contain the water drop removal object, the fixed cylinder, and the movable cylinder. Rotational drive means for rotating the movable cylinder relative to the fixed cylinder, provided on the end surface of the movable cylinder, and positioned in the field of view of the water droplet removal object A motor means is configured by the fixed cylinder body, the movable cylinder body, and the rotation driving means, and water droplets attached to the window are removed by rotating the window by the motor means. It is characterized by that.

  One of the main forms is characterized in that the motor means is either an electromagnetic motor using magnetism or an ultrasonic motor using ultrasonic waves. One of the other main forms is characterized in that a hood is provided to prevent danger associated with the rotation of the window or to prevent the deposits from scattering around the window.

  In the present invention, the filter part for removing water droplets and the motor are integrated, so that all the rotational force generated by the armature core in the motor can be transmitted to the cylindrical part that hits the rotating shaft, and the rotational force is efficiently used without waste. The water droplets attached to the surface of the dish-shaped disk disposed in front of the cylindrical mold can be instantaneously removed by centrifugal force. In addition, since it is a motorized body, it is extremely simple with no extra power transmission parts, so it can be reduced in size and weight, and can be mounted directly in front of the camera lens. I can act. In addition, since it is a complete product as a single unit, it can be quickly attached and detached, and a device for removing water droplets and the like that can be attached to the camera and used only during rain can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  (1) It is comprised by two cylinders, an outer cylinder (3) and the inner cylinder (2) which enters in it. A transparent window is provided at the front of the inner cylinder (1). In addition, by installing a bearing (6) in the outer cylinder and supporting the inner cylinder, the inner cylinder becomes in a state in which the rotational motion is movable. An armature (4), a stator (permanent magnet) (5), a commutator (7), and the like are arranged to allow electricity to flow, whereby the inner cylinder starts rotating and constitutes electric motor means.

  (2) Attach an armature core (4) in which a coil is wound around an iron core at an intermediate position of the rotor (inner cylinder) (2). The electricity flowing from the external battery (15) to the brush (8) is applied to the commutator (7) attached to the rotor. Electricity that passes through the commutator is generated by the permanent magnet (5) attached to the stator (outer cylinder) (3) that generates a magnetic field through the armature core (4) and the armature core. The force of repulsion and attraction is generated by the two magnetic fields that can be generated when the current flows, and the rotational motion begins. Thereby, the electric motor whose part of the inner cylinder (2) serves as a rotating shaft is completed.

  (3) Thereby, the inner cylinder (rotating shaft) starts high-speed rotational movement. Furthermore, the rotational motion is also transmitted to the front dish (1) which is directly connected. Further, centrifugal force is generated on the surface of the dish-shaped disk, and water droplets adhering to the surface of the dish-shaped disk are instantaneously splashed by the centrifugal force. Taking advantage of this action, the camera lens is inserted into the hollow portion of the rear part of the inner cylinder (rotating shaft) (2) and set to take a picture. Since the centrifugal force continues to work on the surface of the dish-shaped disk (1) in front of the viewpoint to remove water droplets, it is possible to shoot almost no water droplets that obstruct the field of view and solve the problem.

  For example, a coreless motor is used as the motor. The coreless motor has the same principle as the electromagnetic force motor, so the same effect can be obtained, and it is a coreless motor that does not use an armature core. Since it is attached and disposed, it is possible to obtain a deposit removing device that is considerably reduced in weight and thickness in structure.

  In addition, an ultrasonic motor may be used as power. The ultrasonic motor is made up of a hollow ring-shaped rotor (13) and a stator (12). Attach the cylinder directly to the hollow ring of the rotor, and attach the other stator to the case side. The rotor and stator are brought into contact with each other by applying an appropriate pressure to flow electricity. Then, a wave is generated between the rotor (moving body) and the stator (elastic vibrating body), and the rotor (moving body) starts to move. Rotational force is transmitted to the cylindrical mold (2) attached to the rotor, centrifugal force is generated on the surface of the dish-shaped disk (1) disposed in the front part of the cylindrical mold, and centrifugal force is applied to water droplets adhering to the filter surface. It can be removed instantly. Thereby, the deposit removing device integrated with the ultrasonic motor can be obtained. Ultrasonic motors are quiet and can be manufactured using only non-magnetic materials without using magnetism, so that it is possible to obtain a deposit removing device that can be used even in places where sound and magnetism are not preferred.

The present invention has the following applicability.
(1) By removing raindrops and snow droplets attached to outdoor photography during the rain and surveillance cameras installed in the field, it is possible to ensure and maintain a clear field of view and prevent a reduction in photography effect.

  (2) It can be used not only for removing water droplets at the time of shooting, but also for countermeasures against malfunction caused by rain, snow, mud, dust, or the like adhering to the light sensitive part of the optical sensor.

  (3) Since water droplets and mud at the time of precipitation jump instantaneously, it can be used to prevent light quantity reduction due to adhesion of mud or mud water by installing it in front of lights.

  (4) It is a water droplet removal filter that integrates the filter part and the electric motor, and the product itself is a complete product, so that it can take advantage of its characteristics, and it can be installed in a soft vinyl window or hard glass window, In addition, it can be installed regardless of the installation location, large or small size, such as inspection windows, and the visibility of the vehicle, ship, tent, storage tank, etc. is removed and the view is clearly secured and maintained. Etc. can be done.

  It is a figure which shows the inner side and outer side cylinder and main components of one Example of this invention.   It is a front view of one Example of this invention.   It is a three-dimensional figure of one Example of this invention.   It is sectional drawing of one Example of this invention.   It is sectional drawing of the ultrasonic motor of one Example of this invention.

Explanation of symbols

(1) Plate-shaped disk (filter), (2) Inner cylinder (rotary shaft), (3) Outer cylinder (case), (4) Armature iron (rotor), (5) Permanent magnet, (6) Bearing, (7) commutator, (8) brush, (9) set screw, (10) hood, (11) voltage ceramic, (12) elastic vibrator, (13) rotor, (14) electrical cord, ( 15) Battery, (16) Camera,

Claims (3)

A fixed cylinder that is detachably fixed to the object side,
A movable cylinder provided inside the fixed cylinder so as to contain the object;
Rotation drive means that is formed between the fixed cylinder and the movable cylinder, and rotates the movable cylinder relative to the fixed cylinder;
A window provided on an end face of the movable cylinder, and located in a field of view of the object;
With
The fixed cylindrical body, the movable cylindrical body, and the rotation driving means constitute a motor means, and the foreign matter is removed by rotating the window by the motor means. .   2. The deposit removing apparatus according to claim 1, wherein the motor means is either an electromagnetic motor using magnetism or an ultrasonic motor using ultrasonic waves.   3. The deposit removing apparatus according to claim 1, further comprising a hood for preventing danger associated with rotation of the front window or preventing scattering of deposits with respect to the surroundings.

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