JP3203216B2 - Vehicle horn stays and vehicle horns - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle horn stay for fixing an electric vehicle horn used in an automobile horn device to a vehicle.

[0002]

2. Description of the Related Art The basic structure of a general vehicle horn body and the structure of a conventional stay will be described with reference to FIGS. First, a basic configuration of a general vehicle horn body 50 will be described with reference to FIG. The container 52 is configured such that a bottomed cylindrical concave portion 54 is formed in a central portion of a disk-shaped metal plate (an example of an iron plate). An electromagnet 60 including an electromagnetic coil 56 and a fixed iron core 58 is disposed on the inner bottom surface of the concave portion 54. The electromagnetic coil 56 is formed by winding an electric wire around a bobbin 62 made of synthetic resin. The vibration plate 64 is formed of a disk-shaped metal plate (an iron plate as an example), and covers the opening of the container 52 to form a closed space with the container 52. A movable core 66 is attached to the center inner surface of the diaphragm 64 at a position facing the fixed core 58.

An interrupter 68 is attached to the inner surface of the container 52 and has a fixed contact 70 and a movable contact 74 attached to an elastic plate 72. And the movable iron core 66 is fixed iron core 58
When the movable contact 74 is separated from the fixed contact 70 by the biasing force of the elastic plate 72, a current can be supplied to the electromagnet 60. Also, a current is supplied to the electromagnet 60 to excite the electromagnet 60, and the movable core 66 is fixed to the fixed core 5
The suction is performed while the diaphragm 64 is elastically deformed toward the side 8. The movable iron core 66 moving toward the fixed iron core 58 together with the elastic plate 7
2 is moved to move the movable contact 74 away from the fixed contact 70. As a result, the current supply to the electromagnet 60 is stopped,
The suction force of the movable core 66 disappears, and the movable core 66 immediately moves to the original position before the suction by the restoring force of the diaphragm 64 after colliding with the fixed core 58. With the movement of the movable core 66 to the original position, the elastic plate 72 also returns to the original position, the movable contact 74 comes into contact with the fixed contact 70, and the current is again supplied to the electromagnet 60. By repeating the above operation, the diaphragm 64 vibrates continuously, and a horn sound is generated. The volume of the horn sound is amplified by the resonance plate 76 attached to the diaphragm 64, and the sound quality is adjusted.

[0004] A stay 78 is generally attached to the vehicle horn body 50 having such a configuration by bolts 79a, and the vehicle horn 80 is also attached to a specific portion A of the vehicle via the stays 78 by using bolts 79b. It is attached. The detailed configuration of the stay 78 will be described. The stay 78 has a long external shape (a substantially rectangular shape as an example) using a metal plate, and has one end (a lower end in FIGS. 4 and 5) 78a having a first screw for inserting a bolt 79a. A hole 82 is formed. The other end (upper end in FIGS. 4 and 5) 78b is formed to have a width just fitted between a pair of guides 84 formed in the specific portion A of the vehicle, and a screw is formed in the specific portion A. A second screw hole 86 through which a bolt 79b for fixing is inserted is formed. As described above, the vehicle horn body 50 vibrates violently as a whole in the reciprocating direction of the movable iron core 66 due to the configuration in which the diaphragm 64 vibrates to generate sound.
Therefore, in order to support the vibrating vehicle horn body 50 in a well-balanced manner, both the first screw hole 82 and the second screw hole 86 are formed on the central axis B along the longitudinal direction of the stay 78, so that the right and left weight balance can be achieved. Are aligned.

[0005]

However, the above-mentioned stay of the conventional horn for a vehicle has the following problems.
When attaching the vehicle horn body 50 to the vehicle using the stay 78, other parts in the vehicle may interfere with the stay 78. In this case, as shown in FIG. 5, the side surface of the interference area (specific area) C with other parts of the stay 78 along the longitudinal direction is cut off as shown by a dashed line to avoid interference. In this case, the shape of the stay 78 is asymmetrical about the center axis B. Therefore, when the horn 80 is blown, the balance between the right and left is lost, and the stay 78 is twisted and vibrates while chattering. There may be noise such as sound. This is particularly noticeable when the rigidity of the specific portion A of the vehicle is low. In this case, FIG.
As shown by the dotted line, if the width is reduced over the entire length along the longitudinal direction of the stay 78, the vehicle horn 80 can be made symmetrical about the center axis B while avoiding interference.
The balance between the left and right of the stay 78 at the time of the sound can be maintained, but the design of the interval between the guides 84 at the specific portion A of the vehicle cannot be easily changed due to the situation only on the horn 80 side for the vehicle.

Further, as shown by a two-dot chain line in FIG. 5, the other side surface of the specific region C is cut away, and the outer shape of the specific region C is formed symmetrically about the center axis B to balance the right and left. Although it is possible to secure the width, in this case, the width of the specific region C of the stay 78 and the width of the other end 78b fixed to the specific portion A of the vehicle greatly differ. For this reason, the strength of each area is greatly different, and when the vehicle horn 80 vibrates, the other end 78b
There is also a problem that stress concentrates on a boundary portion (particularly a portion surrounded by a circle where the width changes rapidly) of the specific region C, cracks are generated, and breakage occurs.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problem, and an object of the present invention is to provide a vehicle with other parts in a vehicle without changing the shape of the other end attached to a specific part of the vehicle. It is an object of the present invention to provide a vehicle horn stay and a vehicle horn which can avoid interference of the horn and prevent noise from being mixed into the horn sound, and can ensure sufficient durability.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, an outer shape is formed to be long using a metal plate, and one end is provided with a vehicle. A first screw hole for fixing to the horn is formed on a central axis along the longitudinal direction, and the other end is formed to have a width that fits into a guide provided at a specific portion of the vehicle. In a stay of the vehicle horn, in which a second screw hole for fixing is formed on the center axis, an outer shape of a specific area in a region along a longitudinal direction excluding the other end is formed around the center axis. It is formed symmetrically and narrower than the width of the other end, and on the central axis between the first screw hole and the second screw hole, from the other end to the other end of the specific region The slit is opened symmetrically around the central axis over the boundary region with To. Specifically, the opening width of the slit is set so that the sum of the lengths of the cross-sectional portions in the width direction at each of the other end and the boundary region approaches the width of the specific region.

According to a third aspect of the present invention, a container accommodating an electromagnetic coil and an interrupter, a closed space is formed by covering an opening of the container, and the container is vibrated by excitation of the electromagnetic coil. The vehicle horn according to claim 1 or 2, further comprising: a diaphragm; and a vehicle horn stay attached to an outer surface of a bottom of the container.

According to the stay or the horn for a vehicle having the above-described configuration, the width of the specific region along the longitudinal direction of the stay that interferes with other components in the vehicle is formed to be narrow, and the interference is avoided. Moreover, this specific area is formed symmetrically and narrowly about the central axis, so that the right and left balance is ensured and noise does not enter the horn sound. In addition, the slit provided on the central axis allows the total length of the cross-sectional portions in the width direction of the other wide end portion to approach the width of the narrow specific region. For this reason, the bending strength of the other end approaches the bending strength of the narrow specific area, and it becomes difficult for stress to be locally applied to the stay supporting the vibrating vehicle horn, thereby suppressing the occurrence of cracks in the stay. it can.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a horn stay for a vehicle horn according to the present invention will be described below in detail with reference to the accompanying drawings. The same components as those in the conventional example are denoted by the same reference numerals. First, a stay 1 of a horn for a vehicle according to the present invention is described.
0 will be described with reference to FIG. The stay 10 has a long outer shape (a substantially rectangular shape as an example) using a metal plate. In some cases, two or three identical metal plates are stacked. Similarly to the conventional stay 10, one end (a lower end in FIG. 1) 10a of the stay 10 has a first screw hole 8 for fixing to the vehicle horn body 50.
2 is formed on a central axis B along the longitudinal direction, and the other end (upper end in FIG. 1) 10b is formed to have a width that fits into a guide 84 provided at a specific portion A of the vehicle. In addition, a second screw hole 86 for fixing to the vehicle is formed on the central axis B. Note that one end 10 of the stay 10
A positioning hole 12 is formed in a in the same manner as in the conventional example, and an engagement protrusion 52a projecting from the bottom surface of the container 52 of the vehicle horn body 50 is fitted therein, and the stay 10 is centered on the first screw hole 82. It is structured not to rotate with respect to the vehicle horn body 50. This positioning hole 12 is also formed on the central axis B.

The features of the stay 10 of the present invention will be described. The outer shape of the specific region D in the region along the longitudinal direction excluding the other end 10b fitted to the guide 84 of the stay 10 is bilaterally symmetric about the central axis B and is larger than the width d2 of the other end 10b. It is formed narrow. In the present embodiment, the entire area (that is, up to one end 10a) along the longitudinal direction excluding the other end 10b is formed as the specific area D with a constant width d1 (<d2).
This width d1 is so small that the other parts 14 that interfere with the stay 10 do not interfere with the stay 10 when the stay 10 is not formed narrow in the interior of the vehicle (when the width d2 is indicated by a two-dot chain line). Set. In addition, the stay 10 of the present embodiment
Then, the outer shape of the boundary region E of the narrow specific region D with the other end 10b is formed by a curve so that its width smoothly changes from d2 to d1, so that stress during vibration is not concentrated. ing.

Further, a first screw hole 82 and a second screw hole 86
A slit 16 is opened symmetrically about the central axis B from the other end 10b to the boundary region E on the central axis B between the two. And the opening width w of the slit 16
Is set such that the sum of the lengths of the cross-sectional portions in the width direction at the other end 10b and the boundary region E approaches the width d1 of the specific region D. Specifically, in the area of the other end 10b, the opening width w1 of the slit 16 is also constant because its width d2 is constant. The total width (d3 + d3) of the cross-sectional portions of the stay 10 in the width direction excluding the slit 16 is equal to the width d of the specific region D.
It is set to approach 1. In the present embodiment, they are set so as to substantially match. Further, in a boundary region E where the outer shape is formed by a gentle curve and the width gradually narrows from d2 to d1, the opening width w of the slit 16 is set.
2 also gradually decreases as the distance from the other end 10b increases, and the total length (d4 + d4) of the cross-sectional portions in the width direction of the stay 10 excluding the slit 16 is set to be closer to the width d1 of the specific region D. I have. In the present embodiment, they are set to substantially match. The concave portion of the slit 16 is formed with a smooth curve so that stress is not concentrated when vibration is applied to the concave portion.

As described above, the narrowest width d1 in the specific area D
The slit 16 is provided on the central axis B of the area (the other end 10b and the boundary area E) wider than the
The first screw hole 82 and the second screw hole 86 are formed by a configuration in which the total length of the cross-sectional portions in the width direction of each portion along the longitudinal direction of 0 substantially matches the width d1 of the specific region D. The bending strength of the stay 10 can be set substantially uniformly over the entire length. For this reason, the vehicle horn body 50 is
Even if vibration is applied, the stay 10 itself vibrates without twisting, and stress due to vibration is less likely to be locally concentrated.

FIG. 2 is a plan view showing the structure of the horn 10 for a vehicle having the stay 10 according to the present invention, as viewed from the container 52 side. One end 10a of the stay 10
Are fixed to the center of the bottom surface of the container 52 by screws using bolts 79a. The vehicle horn body 5
The main body 0 has the same configuration as the general horn for a vehicle described in the conventional example. By constructing the vehicle horn 10 using this stay 10, the stay 10 has conventionally been twisted and vibrated at the time of blowing, and noise such as chattering noise has been added to the horn sound, but the stay 10 has a central shaft. Since it is symmetrical about B, it is hardly twisted even when vibrated, and noise is less likely to be mixed into the horn sound. Therefore, it is possible to prevent the sound quality of the horn sound from lowering. In addition, since the slits 16 are provided as described above, the bending strength of the entire stay 10 becomes substantially uniform, and it becomes difficult to apply stress locally even when the stay 10 vibrates. For this reason, it is possible to avoid a situation in which a crack is generated in the stay 10 and is damaged as in the related art.

Another embodiment of the stay will be described with reference to FIG. The same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted. The stay 20 has a narrow specific region D formed in an intermediate region along the longitudinal direction of the stay 20.
Along with the other end 10b that fits into the horn 4, the width on the one end 10a side attached to the vehicle horn 10 is formed wider than the specific region D. In this case, the slit 16 is connected to one end 10 together with the other end 10 b.
a, and on the center axis B of the boundary region E on the side of each end 10a, 10b of the specific region D.

In the above-described embodiment, the slit 16 formed at the other end 10b or one end 10a is formed so as to be connected to the second screw hole 86 or the first screw hole 82. The second screw hole 86 and the first screw hole 82
In the case of a structure in which the entire periphery of the bolt is tightened with bolts, nuts, washers, etc., the slit 16
It is good also as a structure which is not connected with the screw hole 86 or the 1st screw hole 82.

As described above, various preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0019]

According to the stay of the vehicle horn and the vehicle horn according to the present invention, the width of the specific region along the longitudinal direction of the stay is formed to be narrower than the width of the other end, so that the inside of the vehicle is improved. Interference with other parts is avoided. Moreover, this specific area is formed symmetrically and narrowly about the central axis, so that the right and left balance is ensured and noise does not enter the horn sound. Also, a slit is formed on the central axis between the first screw hole and the second screw hole from the other end to the boundary region,
The bending strength of the other wide end or the boundary region approaches the bending strength of the narrow portion in the specific region. For this reason, since the bending strength of the stay is set to be substantially uniform over the entire length, even when vibration is applied from the horn for the vehicle, stress is less likely to be locally concentrated, and the stay is less likely to crack. .

[Brief description of the drawings]

FIG. 1 is a plan view showing a structure of a stay of a vehicle horn according to the present invention.

FIG. 2 is a plan view showing the structure of a horn for a vehicle having the stay of FIG. 1 as viewed from a mounting direction of the stay.

FIG. 3 is a plan view showing a structure of another embodiment of a stay of a vehicle horn according to the present invention.

FIG. 4 is an explanatory sectional view showing a structure of a general vehicle horn as viewed from a side.

FIG. 5 is a plan view showing a state where the vehicle horn of FIG. 4 is mounted on a specific portion A of the vehicle, as viewed from a mounting direction of a stay.

[Explanation of symbols]

 Reference Signs List 10 stay 10a One end of stay 10b The other end of stay 16 Slit 82 First screw hole 86 Second screw hole B Central axis D Specific area E Boundary area

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60Q 5/00 G10K 9/12 G10K 9/15

Claims (3)

(57) [Claims] An outer shape is formed to be long using a metal plate,
At one end, a first screw hole for fixing to the vehicle horn is formed on the central axis along the longitudinal direction, and the other end has a width that fits into a guide provided at a specific portion of the vehicle. And a second screw hole for fixing to the vehicle is formed on the central axis of the stay of the vehicle horn, the specific region in the region along the longitudinal direction excluding the other end The outer shape is formed symmetrically about the central axis and narrower than the width of the other end, and the other end is located on the central axis between the first screw hole and the second screw hole. A horn stay for a vehicle horn, wherein a slit is opened symmetrically around a central axis around a boundary region between the specific region and the other end. 2. An opening width of the slit is set such that a total of lengths of cross-sectional portions in a width direction at the other end and the boundary region is close to a width of the specific region. The vehicle horn stay according to claim 1, wherein 3. A container accommodating an electromagnetic coil and an interrupter, a diaphragm that covers an opening of the container to form a closed space and vibrates by exciting the electromagnetic coil, and is attached to an outer bottom surface of the container. Claim 1 or 2
A horn for a vehicle, comprising: the stay of the horn for a vehicle according to any one of the preceding claims.