JP5325728B2 - Low noise car alarm system - Google Patents

Description

  The present invention relates to an alarm device for a low noise vehicle used in a low noise vehicle such as an electric vehicle, a hybrid vehicle, and a fuel cell vehicle.

  When driving on a road with no sidewalk with a low-noise car, it is low-noise, so the pedestrian cannot detect that the car is approaching, and it sounds a horn to inform the existence of the car, or to the speed of the car Based on this, it is considered to use a sound generator that generates sound by a speaker outside.

  However, the former method of reporting the presence of a car by horn has the disadvantage that it surprises pedestrians and makes noise in the surrounding area, and the latter sound generator uses a sensor, sound signal generator and speaker. Therefore, the structure is complicated and the cost is high, and an electric circuit is used, so that there is a drawback that the structure is easily broken.

JP 2004-136831 A JP-A-7-209424

  In view of the above-mentioned conventional drawbacks, the present invention attaches to the wheel of a low-noise vehicle, so that the wheel makes noise only when rotating at a low speed, and the vehicle approaches a pedestrian when traveling on a road without a sidewalk. An object of the present invention is to provide an alarm device for a low-noise vehicle that can be informed of this, has a mechanical structure, is simple in structure, is difficult to break down, has a small number of parts, and can be installed at low cost.

  The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.

  However, the drawings are for explanation only and do not limit the technical scope of the present invention.

  In order to achieve the above object, the present invention is formed integrally with one wheel nut of a wheel nut screwed to a plurality of wheel bolts for fixing a wheel of a low noise vehicle such as an electric vehicle or a hybrid vehicle. A fixed-side fixture, or a fixed-side fixture fixedly attached by a wheel nut screwed to a plurality of wheel bolts for fixing the wheel so that the central mounting portion is positioned at the center of the wheel, A fixed-side mounting tool integrally formed with the wheel nut, or a thin cylindrical rotating cylinder fixed to a central mounting portion of the fixed-side mounting tool so that the central portion is positioned at the substantially central portion of the wheel, When the rotating cylinder is housed in the rotating cylinder and the rotating cylinder rotates at a low speed, it slides and generates noise. When the rotating cylinder rotates at a high speed, it slides by the action of centrifugal force. In the low speed noise generation device comprising a noise generator weight can not Rukoto constitutes an alarm device with low noise automobile.

As is clear from the above description, the present invention has the following effects.
(1) According to the first aspect, when the rotation of the wheel of the low-noise vehicle is a low-speed rotation, the noise generating weight in the rotating cylinder can slide and generate noise in the rotating cylinder.
Therefore, when traveling on a road without a sidewalk, it can be notified that the vehicle is approaching due to the noise.
For this reason, it is possible to easily inform the pedestrian without being surprised by the pedestrian or the surrounding area, as compared with a conventional horn or a speaker that generates a warning.
(2) According to the above (1), when the rotation of the wheel of the low noise vehicle is high speed, the noise generating weight is not slid by the centrifugal force, and the rotating cylinder is rotated integrally, so that no noise is generated. It can be used without breaking down.
(3) According to the above (1), since it is only necessary to attach the low-speed noise generating tool to the wheel of the low-noise vehicle via the stationary side mounting tool, anyone can easily install it.
(4) Claim 2 also provides the same effects as in (1) to (3) above, and the low speed noise generator is covered with a wheel cover, so that it is safe and prevents the wheel from becoming unsightly. it can.
(5) Claim 3 can obtain the same effects as the above (1) to (3), and can attach the low-speed noise generator to the automobile in a well-balanced manner, thereby preventing adverse effects on the wheels of the automobile. be able to.
(6) According to the fourth aspect, the same effects as in the above (1) to (3) can be obtained, and the noise generation weight becomes a collision at four locations, and the noise generation interval can be shortened.

Moreover, even if moisture adheres to the wall surface of the rotating cylinder due to the shape of the noise generating weight, it is possible to reliably prevent the noise generating weight from coming into close contact with the wall surface of the rotating cylinder and moving.
(7) According to the fifth aspect, the same effects as in the above (1) to (3) can be obtained, and the timbre of noise can be changed depending on the material of the peripheral wall member of the rotating cylinder.

Explanatory drawing of the use condition of the 1st form for implementing this invention. The front view of the 1st form for carrying out the present invention. Explanatory drawing of the stationary-side fixture of the 1st form for implementing this invention. The front view of the low-speed noise generator of the 1st form for carrying out the present invention. The side view of the low-speed noise generator of the 1st form for implementing this invention. Sectional drawing which follows the 6-6 line of FIG. Explanatory drawing of the noise generation state at the time of low speed driving | running | working of the 1st form for implementing this invention. Explanatory drawing at the time of the high-speed driving | running | working of the 1st form for implementing this invention. Explanatory drawing of the use condition of the 2nd form for implementing this invention. The expanded sectional view which follows the 10-10 line of FIG. Sectional drawing which follows the 11-11 line of FIG. Explanatory drawing of the movable side fixture of the 2nd form for implementing this invention. The rear view of the wheel cover main body of the 2nd form for carrying out the present invention. Explanatory drawing of the state which attached the movable side fixture to the wheel cover main body. Explanatory drawing of the use condition of the 3rd form for implementing this invention. The front view of the 3rd form for carrying out the present invention. Explanatory drawing of the stationary-side fixture of the 3rd form for implementing this invention. The front view of the use condition of the 4th form for implementing this invention. FIG. 19 is a cross-sectional view taken along line 19-19 of FIG. Explanatory drawing of the noise generating weight of the 4th form for implementing this invention. The front view of the rotary cylinder of the 4th form for carrying out the present invention. The side view of the rotating cylinder of the 4th form for carrying out the present invention. Explanatory drawing of the state which removed the one side wall board of the 4th form for implementing this invention.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  In the first embodiment for carrying out the present invention shown in FIGS. 1 to 8, reference numeral 1 denotes an alarm device for a low-noise vehicle of the present invention used for a low-noise vehicle 2 such as an electric vehicle, a hybrid vehicle, and a fuel cell vehicle. Thus, the alarm device 1 for a low-noise vehicle is screwed into wheel bolts 5, 5, 5, 5, 5 for fixing the wheel 3, the central portion 4 being located at the center of the wheel 3 of the low-noise vehicle 2. The fixed side fixture 7 fixed by the wheel nuts 6, 6, 6, 6, and the central portion 4 of the fixed side fixture 7 are fixed by a fixture 10 using a bolt 8 and a nut 9. The low speed noise generator 11 is comprised.

  The low-speed noise generating tool 11 is fixed to the fixed-side fixture 7 so that both ends protrude from the fixing tool 10 and has a thin cylindrical shape and an opening 12 positioned between the wheel nuts 6 and 6 of the wheel 3. Is closed by a closing plate 13, and is housed in the rotating cylinder 14, and when the rotating cylinder 14 rotates at a low speed, it slides to generate noise, and when it rotates at a high speed, centrifugal force is generated. And a balance weight 16 fixed so that the weight balance between the noise generating weight 15 which cannot be slid by the action of the above and the upper end portion 14a of the rotating cylinder 14 and the lower end portion 14b provided with the noise generating weight 15 can be made almost even. The balance adjusting means 18 is composed of a plurality of through holes 17 for weight reduction. Here, “thin cylinder” means that the rotating cylinder 14 has a rectangular cross section.

  In the low-noise vehicle alarm device 1 having the above-described configuration, when the low-noise vehicle 2 travels at a low speed, the low-speed noise generator 11 fixed to the wheel 3 rotates at a low speed. To slide and collide with the upper and lower ends to generate noise.

  For this reason, when walking on a road without a sidewalk, the noise of the low-speed noise generator 11 can inform the pedestrian that the car has approached.

  Further, when the vehicle runs at a high speed on a road with a sidewalk, the low-speed noise generator 11 fixed to the wheel 3 also rotates at a high speed. Therefore, the noise generating weight 15 in the rotary cylinder 14 is affected by the centrifugal force. Because it rotates integrally with the tip, no noise is generated.

  In addition, by attaching the wheel cover 19 which covers the low speed noise generator 11 to the wheel 3, it can prevent that the low speed noise generator 11 is exposed.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 9 to 23 will be described. In the description of the different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

  The second embodiment for carrying out the present invention shown in FIGS. 9 to 14 is mainly different from the first embodiment for carrying out the present invention in that a bearing is mounted on the fixture 10A of the low-speed noise generator 11. An eccentric disc-shaped movable side mounting plate 21 that is rotatably mounted via 20, a plurality of locking piece insertion recesses 22 formed on the outer periphery of the movable side mounting plate 21, and the locking pieces A movable side fixture 25 comprising a locking portion 23 formed at each end of the insertion recess 22 and an operation lever 24 attached to the movable side attachment plate 21, and the wheel 3 on the movable side fixture 25. A storage recess 28 of the movable side mounting plate 21 is formed on an inner wall surface 27 which is attached so that a central portion is located at the center of the wheel 3. 22 is inserted and rotated Thus, the disc-shaped wheel cover main body 30 having a plurality of locking pieces 29 to be locked with the locking pieces 23, and the movable side mounting plate 21 of the movable side mounting tool 25 of the wheel cover main body 30. In this way, the wheel cover 19A including the air flow nose 31 that protrudes outward from the tip portion formed on the rear side of the wheel 3 at all times is used. Even in the low noise vehicle alarm device 1A using the wheel cover 19A, the same effects as the first embodiment for carrying out the present invention can be obtained, and the wheel cover 19A can be stationary even when the vehicle is running. Therefore, it can be used as a space for announcements, advertisements, etc.

  The third embodiment for carrying out the present invention shown in FIGS. 15 to 17 is mainly different from the first embodiment for carrying out the present invention in that one of a plurality of wheel nuts 6 is provided. The fixed side mounting tool 7A for fixing the low speed noise generating tool 11 with the fixing tool 10B using the bolt 8A is integrally formed on the head of the wheel nut 6 using such a fixed side mounting tool 7A. Even in the low-noise automobile alarm device 1B configured as described above, the same effects as those of the first embodiment for carrying out the present invention can be obtained.

  The fixed-side fixture 7A includes a fixed-side fixture main body 7a formed integrally with the head of the wheel nut 6, and a bolt 8A for fixing the low-speed noise generator 11 formed on the fixed-side fixture main body 7a. It is comprised by the screw hole 32 screwed together.

  The fourth embodiment for carrying out the present invention shown in FIGS. 18 to 23 is mainly different from the third embodiment for carrying out the present invention in that the central portion is thick and the outer peripheral portion is thin. A circular ring-shaped noise generating weight 15A is used, and both side wall plates 34, 34 of rhombus-shaped stainless steel, aluminum, duralumin, etc. are provided so that the noise generating weight 15A has a noise generating weight moving space 33 that can move in a rhombus shape. And a rhombus formed of a timbre setting material such as iron, aluminum, bakelite, sintered alloy capable of setting a timbre generated by the collision of the noise generating weight 15A covering the outer peripheral portions of the side wall plates 34, 34 A cylindrical peripheral wall member 35 having a contour shape, an engagement recess 36 of the noise generating weight 15A when centrifugal force is applied, formed on the free end side of the peripheral wall member 35, and the cylindrical peripheral wall The point which used the rotating cylinder 14A comprised with the V-shaped recessed part 37 and 37 for preventing that the intermediate part 35a of the material 35 and the noise generating weight 15A contact continuously, and generating noise. Thus, even with the low noise vehicle alarm device 1C configured using the noise generating weight 15A and the rotating cylinder 14A, the same operational effects as the third embodiment for carrying out the present invention can be obtained. The noise generating weight 15A can be efficiently prevented from adhering to the moisture adhering to the side wall plates 34, 34 of the rotating cylinder 14A and not moving, and with one rotation of the rotating cylinder 14A, Noise can be generated.

  Further, by selecting the material used for the cylindrical peripheral wall member 35 of the rotating cylinder 14A, the tone of the generated noise can be changed.

  In order to prevent the noise generating weight 15A from adhering to the moisture adhering to the side wall plates 34, 34, the noise generating weight 15A is formed in a circular ring shape whose outer peripheral portion is thinner than the central portion. However, a noise generating weight having a circular shape in which the outer peripheral portion is thinner than the central portion or a disk shape in which a plurality of protrusions are formed on both side surfaces may be used.

  Further, the material, shape, and number of the noise generating weight 15A are not limited so long as they generate noise when the wheel rotates at a low speed and are locked to the free end portion of the rotating cylinder by centrifugal force when the wheel rotates at a high speed. Any material, shape and number may be used.

  INDUSTRIAL APPLICABILITY The present invention is used in an industry for manufacturing an alarm device for a low noise vehicle that emits an alarm sound to a pedestrian when the low noise vehicle runs at a low speed.

1, 1A, 1B, 1C: Low-noise car alarm device,
2: Low noise car, 3: Wheel,
4: Central part, 5: Wheel bolt,
6: Wheel nut 7, 7A: Fixed side fixture
7a: Fixed side fixture body 8, 8A: Bolt,
9: Nut, 10, 10A, 10B: Fixing tool,
11: Low speed noise generator, 12: Opening,
13: Blocking plate 14, 14A: Rotating cylinder,
15, 15A: Noise generation weight, 16: Balance weight,
17: Through hole, 18: Balance adjusting means,
19, 19A: wheel cover, 20: bearing,
21: Movable side mounting plate, 22: Locking piece insertion recess,
23: Locking part, 24: Operation lever,
25: Movable attachment, 26: Clearance,
27: inner wall surface, 28: storage recess,
29: Locking piece, 30: Wheel cover body,
31: Air flow nose, 32: Screw hole,
33: Noise generation weight moving space 34: Side wall plate,
35: cylindrical peripheral wall member, 36: engagement recess,
37: Concavity.

Claims (5)

A fixed-side fixture integrally formed with one of the wheel nuts screwed into a plurality of wheel bolts for fixing a wheel of a low-noise vehicle such as an electric vehicle or a hybrid vehicle, or the center of the wheel A fixed-side fixture fixedly attached by a wheel nut screwed to a plurality of wheel bolts for fixing the wheel so that the central mounting portion is positioned at the portion, and a fixed-side attachment integrally formed with the wheel nut Or a thin cylindrical rotating cylinder fixed to the central mounting portion of the fixed-side mounting tool by a fixing tool so that the central portion is positioned substantially at the central portion of the wheel, and is housed in the rotating cylinder and is rotated. If the cylinder rotates at a low speed, it slides to generate noise, and if it rotates at a high speed, it generates noise that cannot be slid by the action of centrifugal force. Alarm device of the low-noise car, characterized in that it comprises a low-speed noise generation device comprising. 2. The alarm device for a low-noise vehicle according to claim 1, wherein the low-speed noise generating tool is covered with a wheel cover rotatably attached to a fixing tool for fixing the wheel or the rotating cylinder to the wheel. 2. The alarm device for a low-noise vehicle according to claim 1, wherein the low-speed noise generator is set so that the upper and lower portions have substantially the same weight with the center position of the fixing member of the rotating cylinder as the center. The low-speed noise generator includes a rotating cylinder having a noise generating weight moving space in which the noise generating weight can move in a rhombus shape, and a central portion that can prevent adhesion to the outer wall surface that forms the moving space of the rotating cylinder that moves in the rotating cylinder. 2. The alarm device for a low-noise vehicle according to claim 1, wherein the outer peripheral portion has a circular shape or a circular ring shape whose thickness is smaller than the thickness of the low-noise vehicle. The rotating cylinder of the low-speed noise generator is set tones of iron, aluminum, bakelite, sintered alloy, etc. that set the tone of noise generated by the collision of both side wall plates and the noise generating weight covering the outer periphery of both side wall plates 2. The alarm device for a low-noise vehicle according to claim 1, wherein the alarm device comprises a cylindrical peripheral wall member made of a material.

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