JP2009142017A - Warning sound generator for electric vehicles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warning sound generator for electric vehicles that does not use electricity and is suitable for electrical energy saving and does not use an electrical apparatus and can be inexpensively equipped. <P>SOLUTION: The warning sound generator is provided on an electric vehicle in a position where it receives wind pressure during running. It includes a windmill that is rotated under wind pressure in the position and generates sound by driving of the windmill to alert a passerby or the like to the approach of the vehicle by the sound. One or more pin is erected on the outer circumferential surface of the rotating shaft of the windmill and one or more sounding piece is protruded around the rotating shaft. When a pin is brought into contact with a sounding piece, the sounding piece is vibrated and sounds. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a warning sound generating device for an electric vehicle that is equipped so that a pedestrian or the like is careful of a quiet electric vehicle without engine sound.

  Electric vehicles are not careful because they run quietly due to the power of the motor, and there are problems with safety, and since pedestrians are not aware of the approach of electric vehicles, they lose the timing to avoid danger and traffic Prone to accidents. While walking, crossing the road, getting off the car, etc., pedestrians will notice the car due to the approaching engine sound in the current road conditions. Disappear. In order to prevent this danger, a proposal has been made to equip an electric vehicle with a warning sound or dummy sound generating device (Patent Literature below).

A conventional warning sound generating device for an electric vehicle generates a warning sound or a dummy sound for a pedestrian by a speaker, and switching is detected by turning on / off in addition to manual operation. Is made. In addition, on highways, proposals have been made to save energy so that the vehicle is automatically turned off by a car navigation system or by detecting a high speed.
JP 2002-238101 A JP 2000-168439 A Japanese Patent Laid-Open No. 11-27810

  According to the conventional warning sound generating device for an electric vehicle as described above, since electricity is required to generate a warning sound from a speaker, as an electric vehicle that uses a battery with limited power storage for driving power Is not only contrary to energy conservation, but also complicates the electrical circuit, and uses a lot of expensive parts for the electrical circuit to turn the device on and off, especially to stop the sound generation on the highway Thus, when energy saving was attempted, there was a problem that the cost of the equipment further increased.

  In view of the above circumstances, it is an object of the present invention to provide a warning sound generator for an electric vehicle that is suitable for energy saving because it does not use electricity and that can be equipped at low cost because it does not use electric equipment. did.

  In order to solve the above-described problems, the present invention is provided in a location where an electric vehicle receives wind pressure during traveling, and is equipped with a windmill that rotates at the wind pressure at that location, and generates sound by driving the windmill. A warning sound generating device that emits a warning of proximity to a pedestrian or the like, with one or more pins protruding from the outer periphery of a rotating shaft by a windmill, while the pins touch an enclosure centered on the rotating shaft Thus, a warning sound generating device for an electric vehicle characterized in that one or more ringing pieces that vibrate and generate sound is provided.

  Since the warning sound generating device for an electric vehicle is configured as described above, when the electric vehicle is started and receives wind pressure, the wind turbine's rotating shaft rotates with the wind pressure, and the pins projecting around the rotating shaft Touches the surrounding vibration piece, and the vibration sound is continuously emitted, which is transmitted as a warning sound so as to pay attention to a pedestrian or the like.

  The melody of the warning sound varies depending on the number, length, thickness, etc. of the pins, and also varies depending on the number, length, thickness, thickness, etc. of the vibrating bars. And, by combining them, it is possible to make an infinite selection so that mildness, extreme, healing, romance, etc. can be felt, and various warning sounds can be set according to those conditions. Further, as described in claim 2, the user can change the shaft cylinder and the enclosure by changing the enclosure. It is possible to generate dummy sounds similar to engine sounds.

  As an installation location of the warning sound generating device for an electric vehicle, the structure in the case of the roof A or the bonnet B is shown in the following embodiment, but by configuring the main part (see claim 1) in the same manner, It can also be equipped on the back side C of the bonnet or the back side D of the front bumper. In this case, it is necessary to provide an air intake port for the warning sound generator in the electric vehicle.

  As described above, according to the present invention, since wind power is used to send a warning sound to alert a pedestrian, it is suitable for energy saving without consuming precious electricity stored in the battery. In addition, in order to avoid the complexity of the circuit in relation to the electric circuit of the electric vehicle itself, it is possible to equip it at low cost because it does not use expensive electrical equipment, and furthermore, the sound quality of the dial tone is suitable for vigilance, In addition, there is an excellent effect that melody can be set in various ways so that it can be comfortably accepted by drivers and pedestrians.

  The drawing shows an embodiment, and the warning sound generating device of the electric vehicle is installed on the roof A or the bonnet B of the electric vehicle, and the suction plate 1 fixed on the roof A is a substrate. The wind turbine 3 is rotated by wind or natural wind received during traveling, and the melody device 5 is driven by the rotational force of the wind turbine 3. The wind turbine 3 is housed in a circular open case 7 for taking in the wind, A transmission case 9 in which the melody device 5 is housed is provided in the central portion above it.

  The suction board 1 is a flexible rubber-like plate shape such as a circle, an ellipse, a rectangle, or a polygon stuck on the roof A. As for the suction means, the entire suction disk 1 is molded with a plastic magnet, or an adhesive is applied to the lower surface 10. Moreover, in order to equip the windmill 3 etc., the hollow 11 in which the lower end of the open case 7 fits in the center part is formed widely.

  With regard to the equipment such as the windmill 3, the rotary shaft 13 is erected in the center of the suction plate 1 through the open case 7 and the transmission case 9 and is supported by the upper and lower bearings 15 and 16. The windmill 3 is housed in the open case 7 by being integrally attached to the lower half of the rotating shaft 13.

  In the wind turbine 3, a large number of blades 19, 19,... Project radially from a boss 17 that fits on the rotating shaft 13, and each blade 19 is curved in a mouth to form a wind receiver 21. There are various means for rotating the rotating shaft 13 integrally with the blades 19, 19... In this case, the boss 17 is fixed to the rotating shaft 13 by a push screw 23.

  The open case 7 is provided with an air vent 29 around the bottom disc 25 and the top disc 27. The air vent 29 has inclined plate bars 35, 35,. The inclined plate bar 35 is inclined so as to guide the wind (arrow W) to the wind receiver 21.

  The melody device 5 has a shaft cylinder 37 fitted on the upper half of the rotary shaft 13, a cylindrical enclosure 39 fitted on the inner side of the transmission case 9, and a plurality of ring pieces 41, 41,... Are projected, and a plurality of pins 43 projecting around the shaft piece 37 are projected. Therefore, when the rotating shaft 13 is rotated by the windmill 3, the pins 43, 43,... The melodies vary depending on the relationship between the pins 43, 43,... And the ring pieces 41, 41,. However, the shaft tube 37 and the enclosure 39 can be replaced so that the user can change the melody to a favorite melody. Reference numerals 45 and 47 denote screws for fixing the shaft cylinder 37 and the enclosure 39, respectively.

  The transmission case 9 of the melody device 5 has a circular hat shape, and the lower end flange 45 is fixed to the top circular plate 27 of the open case 7 with screws 50. When changing the melody, the transmission case 9 can be removed once and the shaft cylinder 37 and the enclosure 39 can be easily replaced. Further, the melody is easily transmitted to the outside of the enclosure 39 and the transmission case 9 through the sound holes 49, 49.・ ・ Has been revealed.

  A means for turning off the warning sound generator P may be provided. As the means, for example, a cap for covering the open case 7 is provided as an accessory, and a lock device for making the rotation shaft 13 non-rotatable is provided.

It is a perspective view which shows the state which provided the warning sound generator of the electric vehicle which concerns on this invention in the roof. It is a side view of the electric vehicle which shows the use condition of the warning sound generator. It is sectional drawing seen from the plane which shows the warning sound generator. It is sectional drawing seen from the front which shows the warning sound generator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adsorption board 3 Windmill 7 Open case 9 Transmission case 13 Rotating shaft 37 Shaft cylinder 39 Enclosing 41 Ringing piece 43 Pin

Claims (2)

  An electric vehicle is provided at a location that receives wind pressure during its travel, and is equipped with a windmill that rotates at the wind pressure at that location, generating sound by driving the windmill, and transmitting proximity attention to pedestrians, etc. with that sound A warning sound generator, wherein one or more pins project from the outer periphery of a rotating shaft by a windmill, and at least one vibration that generates a sound by vibrating when the pin touches an enclosure centering on the rotating shaft. A warning sound generating device for an electric vehicle characterized by projecting a squeal piece. An open case that houses the windmill protrudes from the suction plate that is attached to the roof or bonnet of the electric vehicle, and a transmission case is provided in the center of the open case, with the rotation axis of the windmill as the center axis. The shaft cylinder with the pin protruding from the rotating shaft is detachably fixed and fitted, and the inside of the transmission case is detachably fixed and fitted with the enclosure with the ringing piece protruding. The warning sound generator for an electric vehicle according to claim 1.

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