WO2019176195A1 - Dispositif avertisseur de véhicule - Google Patents

Dispositif avertisseur de véhicule Download PDF

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Publication number
WO2019176195A1
WO2019176195A1 PCT/JP2018/045338 JP2018045338W WO2019176195A1 WO 2019176195 A1 WO2019176195 A1 WO 2019176195A1 JP 2018045338 W JP2018045338 W JP 2018045338W WO 2019176195 A1 WO2019176195 A1 WO 2019176195A1
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WO
WIPO (PCT)
Prior art keywords
flat plate
iron core
plate portion
diaphragm
fixed
Prior art date
Application number
PCT/JP2018/045338
Other languages
English (en)
Japanese (ja)
Inventor
聡士 土井
祐哉 前橋
Original Assignee
浜名湖電装株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浜名湖電装株式会社 filed Critical 浜名湖電装株式会社
Priority to CN201880090764.0A priority Critical patent/CN111819623A/zh
Publication of WO2019176195A1 publication Critical patent/WO2019176195A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • G10K9/15—Self-interrupting arrangements

Definitions

  • the disclosure in this specification relates to a vehicle alarm device that generates an alarm sound.
  • Patent Document 1 discloses a vehicle horn.
  • the case of the vehicle horn is formed with a through cylinder hole in which a mounting hole formed in the coil bobbin is fitted.
  • This through cylinder hole is also used as a vent hole.
  • a filter having a waterproof function is provided on the bent piece portion of the through cylinder hole located inside the case so as to seal the through cylinder hole.
  • An object of the disclosure in this specification is to provide a vehicle alarm device capable of suppressing the formation of a water film in a vent hole communicating between the inside and outside of a housing.
  • One of the disclosed vehicle sounders is generated by energization of a housing having an opening, a coil that is accommodated in the housing and generates a magnetic force when energized, a fixed iron core that is accommodated in the housing, and the coil.
  • a movable iron core that is displaced in the axial direction toward the fixed iron core by magnetic attraction force, and is fixed to the housing and the movable iron core so as to cover the opening, and vibrates with the displacement in the axial direction of the movable iron core to vibrate air.
  • a filter provided on the diaphragm so as to cover a ventilation hole penetrating the diaphragm from the outside.
  • One of the disclosed vehicle sounders is generated by energization of a housing having an opening, a coil that is accommodated in the housing and generates a magnetic force when energized, a fixed iron core that is accommodated in the housing, and the coil.
  • a movable iron core that is displaced in the axial direction toward the fixed iron core by magnetic attraction force, and is fixed to the housing and the movable iron core so as to cover the opening, and vibrates with the displacement in the axial direction of the movable iron core to vibrate air.
  • a diaphragm, and a filter provided in the diaphragm so as to fill a ventilation hole penetrating the diaphragm over the entire axial direction.
  • the filter allows passage of water to the ventilation hole from the outside. It is possible to prevent the surface tension of water from acting on the entire pores. As described above, since a water film due to the surface tension of water cannot be formed in the vent hole, it is possible to provide a vehicle alarm device capable of suppressing the water film from being stretched in the vent hole communicating with the inside and outside of the housing.
  • a vehicle alarm 1 according to a first embodiment will be described with reference to FIGS. 1 to 3.
  • it is a device that is mounted on a vehicle such as an automobile or a motorcycle and generates a warning sound to the outside, and is also called an electromagnetic horn.
  • the vehicle alarm device 1 emits an alarm sound outside the vehicle when a predetermined operation unit in the vehicle is operated.
  • the predetermined operation unit is a horn switch provided on a steering wheel or a handle, for example, which is operated by an occupant.
  • the vehicle alarm 1 is an electromagnetic alarm that generates an alarm according to the output voltage.
  • the vehicle alarm device 1 is attached to a vehicle-side member such as a front portion of a vehicle, for example, a front portion of a radiator, via a stay 5.
  • the vehicle alarm device 1 is attached to the vehicle in a posture in which the movable iron core 4 is positioned in front of the fixed iron core 22 and the axial directions of the movable iron core 4 and the fixed iron core 22 are aligned in the front-rear direction.
  • the vehicle alarm device 1 includes a bottomed cylindrical housing 11 and an electromagnetic coil portion 2 housed and fixed near the center of the housing 11.
  • the vehicle alarm device 1 is a plate-like member, and includes a diaphragm 3 that is fixed to the housing 11 so as to cover an opening of the housing 11 that constitutes the outer shell.
  • the diaphragm 3 is also called a diaphragm.
  • the diaphragm 3 vibrates with the axial displacement of the movable iron core 4 and vibrates the air by this vibration.
  • the electromagnetic coil unit 2 includes a coil 20, a bobbin 21, and a fixed iron core 22.
  • the coil 20 is configured by winding a winding around a resin bobbin 21.
  • the vehicle alarm device 1 is fixed near the center of the diaphragm 3, the movable core 4 disposed opposite to the fixed core 22, the stay 5 fixed to the bottom of the housing 11 and attached to the vehicle or the like, have.
  • the electromagnetic coil unit 2 is installed around the axis of the housing 11.
  • the housing 11 and the diaphragm 3 are formed by pressing an iron-based magnetic material plate into a concave shape in order to constitute a part of the magnetic circuit of the electromagnetic coil section 2.
  • the small diameter portion 41 located at the front portion of the movable iron core 4 is fitted with the central hole portion 3a of the diaphragm 3 and the central hole portion of the resonance plate 9, and the movable iron core 4, the vibration plate 3 and the resonance plate 9 are caulked. It is fixed and integrated.
  • the housing 11 includes a disc-shaped bottom portion 110 located at the rear end, an intermediate flat portion 111 projecting in a disc shape from a front end portion formed by raising the peripheral edge of the bottom portion 110 in a cylindrical shape, and an outer peripheral portion located at the front end. 112, and is integrally formed.
  • the outer peripheral edge portion 112 is formed so as to protrude from a front end portion formed such that the peripheral edge of the intermediate flat portion 111 rises forward in a cylindrical shape.
  • the outer peripheral edge of the diaphragm 3 is fixed to the housing 11 by being wound around the outer peripheral edge 112.
  • the diaphragm 3 is provided with a vent hole 30 penetrating in the thickness direction.
  • the vent hole 30 constitutes a communication path that connects the inside and the outside of the vehicle alarm 1.
  • a filter 6 that covers the vent hole 30 is provided on the outer side, which is the front side of the diaphragm 3.
  • the filter 6 is integrally fixed to the peripheral surface of the ventilation hole 30 in the diaphragm 3 with an adhesive 6a in a state where the ventilation hole 30 is completely covered in the front.
  • the filter 6 suppresses, for example, dust, dust, sand and the like from entering the inside of the housing 11 from the outside.
  • the filter 6 has air permeability and water repellency.
  • the surface of the filter 6 is subjected to water repellent treatment.
  • the water repellent treatment is provided by, for example, a fluororesin coating or a silicon resin coating.
  • the filter 6 functions to repel water toward the vent hole 30 or to prevent water from entering the vent hole 30 when the diaphragm 3 gets wet.
  • the air holes 30 and the filter 6 allow air to enter and exit from the inside and outside of the housing 11. As described later, the air enters and exits when the internal pressure of the housing 11 fluctuates due to the vibration of the diaphragm 3 accompanying the axial displacement of the movable iron core 4.
  • the diaphragm 3 includes a fixed portion 31 a in contact with the movable iron core 4, an inner flat plate portion 31 b outside the fixed portion 31 a, and a diameter larger than the inner flat plate portion 31 b.
  • the outer outer flat plate portion 31d and the intermediate bent portion 31c are integrally provided.
  • the diaphragm 3 includes an outer peripheral edge side bending portion 31e located on the outermost peripheral edge side.
  • the diaphragm 3 is arranged in the order of the fixed portion 31a, the inner flat plate portion 31b, the intermediate bent portion 31c, the outer flat plate portion 31d, the outer peripheral edge bent portion 31e, and the outer peripheral edge portion of the diaphragm 3 from the central axis toward the radially outer side.
  • a plate-like member formed integrally is formed.
  • the radially outer side means a direction closer to or closer to the outer periphery than the central axis of the diaphragm 3.
  • the fixed portion 31 a is fixed to the movable core 4 by being sandwiched between the caulked small-diameter portion 41 and a portion on the rear side of the small-diameter portion 41 of the movable iron core 4.
  • the fixed portion 31 a is a disk-shaped portion that is integrally fixed to the movable iron core 4 together with the peripheral portion of the central hole portion in the resonance plate 9.
  • the fixed portion 31 a is a portion that fluctuates integrally with the movable iron core 4 due to the axial displacement of the movable iron core 4. Therefore, the fixed portion 31a is a portion where the stress generated by the vibration of the movable iron core 4 is smaller than the inner flat plate portion 31b, the intermediate bent portion 31c, the outer flat plate portion 31d, and the like.
  • the inner flat plate portion 31b is an annular flat plate portion provided around the fixed portion 31a near the fixed portion 31a in the diaphragm 3. That is, the inner flat plate portion 31 b is a flat plate portion that is closer to the fixed portion 31 a and the central axis than the outer peripheral edge portion of the diaphragm 3.
  • the inner flat plate portion 31b is a flat plate portion that is located on the radially inner side of the outer flat plate portion 31d among the flat plate portions provided on the diaphragm 3.
  • the radially inner side is the side opposite to the radially outer side and means the direction closer to or closer to the central axis than the outer peripheral edge of the diaphragm 3.
  • the inner flat plate portion 31b has a longitudinal cross-sectional shape such that a portion on the inner diameter side is positioned on the front side or the resonance plate 9 side in the vehicle alarm device 1 than a portion on the outer diameter side.
  • the longitudinal cross-sectional shape is a shape when the diaphragm 3 is cut along a plane along the axial direction of the movable iron core 4.
  • the inner flat plate portion 31b has a shape such that the inner flat plate portion 31b is located on the rear side or the fixed iron core 22 side as it goes from the fixed portion 31a side to the outer peripheral edge side.
  • FIG. 4 shows the relationship between the shape of the diaphragm 3 and the generated stress distribution.
  • the solid line in the stress distribution diagram included in FIG. 4 is the distribution of stress values at the time of suction when the movable core 4 approaches the fixed core 22, and the broken line is at the time of repulsion when the movable core 4 is separated from the fixed core 22. It is a distribution of stress values.
  • the stress is higher in the portion closer to the fixed portion 31a, and the stress is rapidly increased in the vicinity of the fixed portion 31a.
  • the intermediate bent portion 31c is a portion that connects the inner flat plate portion 31b and the outer flat plate portion 31d.
  • the stress is higher as the portion is closer to the intermediate bent portion 31c, and the stress is rapidly increased in the vicinity of the intermediate bent portion 31c.
  • the stress is maximum in the entire diaphragm 3 both during suction and during repulsion.
  • the stress tends to increase as it approaches a bent portion or a bent portion that forms a changing portion where the inclination of the adjacent flat plate portion changes.
  • the vent hole 30 and the filter 6 are preferably provided on the inner plate portion 31b closer to the fixed portion 31a than to the intermediate bent portion 31c. Furthermore, it is preferable that the vent hole 30 and the filter 6 are provided in the middle portion of the intermediate bent portion 31c and the fixed portion 31a where the stress shown in FIG. The above relationship between each part and stress is true for both suction and repulsion.
  • the outer flat plate portion 31d is an annular flat plate portion provided around the inner flat plate portion 31b closer to the outer peripheral edge than the fixed portion 31a in the diaphragm 3.
  • the outer flat plate portion 31d is a flat plate portion located on the outer diameter side of the inner flat plate portion 31b among the flat plate portions provided on the diaphragm 3.
  • the outer flat plate portion 31d is the longest flat plate portion having the longest radial length in the longitudinal section of the diaphragm 3 along the axial direction.
  • the outer flat plate portion 31d is longer in the radial direction than the inner flat plate portion 31b in the longitudinal section described above. With this configuration, as shown in FIG. 4, the stress acting on the outer flat plate portion 31d is relatively smaller than the stress acting on the inner flat plate portion 31b.
  • the outer flat plate portion 31d is shaped so as to be positioned on the front side or the resonance plate 9 side from the intermediate bent portion 31c side toward the outer peripheral edge side.
  • the stress is higher in the portion closer to the intermediate bend portion 31c for both suction and repulsion, and the stress decreases sharply when proceeding from the intermediate bend portion 31c to the outer diameter side.
  • the minimum value of stress is smaller than in the inner flat plate portion 31b.
  • the vent hole 30 and the filter 6 are preferably provided in the outer flat plate portion 31d located on the outer side of the inner flat plate portion 31b in the diaphragm 3.
  • the stress on the outer peripheral edge side bent portion 31e side tends to be smaller than that on the intermediate bent portion 31c side. Since the outer peripheral edge side bent portion 31e is a portion close to the outer peripheral edge portion of the diaphragm 3 fixed to the outer peripheral edge portion 112 of the housing 11, the fluctuation is small and the stress is smaller than that of the intermediate bent portion 31c which is easily changed. Because it becomes. For this reason, from the viewpoint of securing the strength of the diaphragm 3, the vent hole 30 and the filter 6 are preferably provided on the outer peripheral side bent portion 31e side in the outer flat plate portion 31d rather than the intermediate bent portion 31c side.
  • vent hole 30 and the filter 6 are intermediate portions between the intermediate bent portion 31c and the outer peripheral side bent portion 31e where the stress at the time of repulsion and the stress at the time of suction are reversed as shown in FIG. It is preferable to provide in.
  • the bobbin 21 includes a cylindrical portion 210, a flange portion 211 protruding in a disc shape from the end portion on the diaphragm 3 side of the cylindrical portion 210, a first fixed portion 212 protruding outward from the flange portion 211, 2 It has a fixed part etc. and is formed in one.
  • a coil 20 formed by winding a winding is provided on the outer peripheral surface of the cylindrical portion 210.
  • a fixed iron core 22 is provided concentrically with the bobbin 21 and the coil 20 inside the cylindrical portion 210.
  • the flange portion 211 forms an end surface extending from the front end portion of the tubular portion 210 to the periphery in the bobbin 21.
  • the flange portion 211 is a portion that covers the front end portion of the coil 20 and the end portion on the diaphragm 3 side.
  • a bobbin 21 having a fixed iron core 22 and a coil 20 is provided on the front side of the bottom 110 of the housing 11.
  • the front end surface of the fixed iron core 22 faces the front end surface of the movable iron core 4.
  • the fixed iron core 22 exists inside the tubular portion 210 of the bobbin 21. In other words, the side surface of the fixed iron core 22 is surrounded by the cylindrical portion 210.
  • a gap of a predetermined distance a so-called air gap, is formed between the front end surface of the fixed core 22 and the front end surface of the movable core 4 facing the front end surface. Therefore, when the coil 20 is not energized, the distal end surface of the fixed iron core 22 and the distal end surface of the movable iron core 4 are separated from each other.
  • the intermediate flat portion 111 of the housing 11 is laminated with a first fixed portion 212, a movable contact support plate 7 made of an elastic metal spring material, and a conductive metal fixed contact support plate 8. Yes.
  • An insulating member is interposed between the movable contact support plate 7 and the fixed contact support plate 8.
  • These laminated members are caulked and fixed integrally by a metal first rivet 91 fixed to the intermediate flat portion 111.
  • One end portion of the winding extending from the coil 20 is installed between the movable contact support plate 7 and the first fixed portion 212 in a state where the insulating film covering the conductor is peeled off.
  • the first rivet 91 is pressed against the head. In this way, one end portion of the winding and the movable contact support plate 7 are brought into conduction.
  • the second fixed part is laminated on the other part of the intermediate flat part 111.
  • the second fixed portion is caulked and fixed to the housing 11 by a metal second rivet fixed to the intermediate flat portion 111.
  • the other end portion of the winding extending from the coil 20 in the electromagnetic coil portion 2 is installed along the periphery of the shaft portion of the second rivet in a state where the insulating film covering the conductor is peeled off.
  • the caulking is fixed, the second rivet is pressed against the head. In this manner, the other end portion of the winding is pressed against the head of the second rivet, whereby the conductor at the end portion of the winding and the second rivet are conducted.
  • the conductor of the winding is made of a copper wire, a conductive material other than the copper wire, or a material in which different conductive substances are combined.
  • the bobbin 21 is fixed to the housing 11 at two locations of the first rivet 91 and the second rivet.
  • the second rivet is insulated from the housing 11 by an insulating member.
  • the second rivet is electrically connected to the connector terminal inside the connector 13.
  • the positive potential of the battery is led to the connector terminal via the horn switch. Therefore, the second rivet is a rivet positioned on the current input side in the electromagnetic coil unit 2.
  • the vehicle alarm device 1 may further include a connector terminal that conducts to a terminal portion of a winding that is pressed against the movable contact support plate 7 by caulking and fixing the first rivet 91.
  • the movable contact support plate 7 is provided with a movable contact portion that protrudes toward the fixed contact support plate 8.
  • the fixed contact support plate 8 is provided with a fixed contact portion that protrudes toward the movable contact support plate 7 at a position corresponding to the movable contact portion.
  • the movable contact portion and the fixed contact portion are installed so as to face each other in the axial direction.
  • the movable contact portion constitutes a normally closed contact that is urged toward the fixed contact support plate 8 by the spring force of the movable contact support plate 7 and contacts the fixed contact portion.
  • a large-diameter portion 42 is formed on the entire outer peripheral surface of the movable iron core 4 so as to protrude outward from the other portions.
  • the large diameter portion 42 is integrally formed by cold forging or the like.
  • the large-diameter portion 42 constitutes a pressing portion that comes into contact with the pressed portion of the movable contact support plate 7 near the center of the horn and presses it toward the rear, that is, the fixed iron core 22 side.
  • the large diameter portion 42 pushes the pressed portion toward the fixed iron core 22, the fixed contact portion 80 and the movable contact portion 70 are separated from each other, and the contact state between them is released.
  • the movable core 4 is fixed to the diaphragm 3 by caulking the small-diameter portion 41 at the front portion of the movable core 4 while being inserted into the center of the diaphragm 3.
  • the fixed iron core 22 is fixed to the mounting stay 5 using a fixing means such as caulking together with the center portion of the bottom portion 110 of the housing 11.
  • the fixed iron core 22 may be fixed to the stay 5 together with the center portion of the bottom portion 110 of the housing 11 using means such as nut tightening.
  • the operation of the vehicle alarm 1 will be described.
  • the horn switch When the horn switch is turned on, the current from the in-vehicle power source flows from the connector terminal in the order of the second rivet, the other end of the winding, and the coil 20. Further, the current is supplied to one end of the winding, the movable contact support plate 7, the movable contact portion, the fixed contact portion, the fixed contact support plate 8, the first rivet 91, the housing 11, the fixed iron core 22, the stay 5, the vehicle body (grounding). )
  • the other end of the winding and the second rivet are conducted, and the one end of the winding and the movable contact support plate 7 are conducted.
  • the electromagnetic force of the electromagnetic coil portion 2 acts on the gap between the movable iron core 4 and the fixed iron core 22, and the movable iron core 4 is attracted to the fixed iron core 22.
  • the central portion of the diaphragm 3 is moved integrally with the movable iron core 4 while the peripheral edge portion is fixed.
  • the large-diameter portion 42 of the movable iron core 4 presses the pressed portion of the movable contact support plate 7 to separate the movable contact portion from the fixed contact portion.
  • the energization of the electromagnetic coil unit 2 is interrupted and the electromagnetic force disappears, so that the movable iron core 4 returns to the original position by the elastic force of the diaphragm 3, whereby the movable contact unit and the fixed contact unit The closed state of is restored.
  • the movable iron core 4 approaches the fixed iron core 22 by the magnetic attractive force from the fixed iron core 22.
  • the vehicle alarm device 1 includes a housing 11 having an opening 112a, a coil 20 that is housed in the housing 11 and generates a magnetic force when energized, and a fixed iron core 22 housed in the housing 11.
  • the vehicle sounder 1 further includes a movable iron core 4 that is axially displaced toward the fixed iron core 22 by a magnetic attractive force generated by energization of the coil 20, and a housing 11 and the movable iron core 4 so as to cover the opening 112a.
  • a diaphragm 3 fixed to the.
  • the diaphragm 3 is a member that vibrates with the displacement of the movable iron core 4 in the axial direction to vibrate air.
  • the vehicle sounder 1 includes a filter 6 provided on the diaphragm 3 so as to cover the ventilation hole 30 penetrating the diaphragm 3 from the outside.
  • the filter when the diaphragm 3 is provided with the filter 6 that covers the ventilation hole 30 of the diaphragm 3 from the outside, the filter is provided when water is applied to the ventilation hole 30 from the outside. 6 can suppress the intrusion of water into the vent hole. Since water cannot easily enter the vent hole 30 in this way, it is possible to create a situation in which the surface tension of water hardly acts in the vent hole 30. Thereby, water film formation in the vent hole 30 can be inhibited. According to the vehicle alarm 1, the water film can be prevented from being stretched in the vent hole 30 communicating between the inside and the outside of the housing 11, so that the vent hole 30 and the filter 6 are provided so as to exhibit a desired air permeability. it can. Further, when the filter 6 has water repellency, the water is repelled by the filter 6, so that it is possible to further inhibit the flow of water that tries to enter the vent hole 30 through the filter 6.
  • the diaphragm 3 includes an inner flat plate portion 31b provided near the fixed portion 31a contacting the movable iron core 4, an outer flat plate portion 31d provided on the outer side of the inner flat plate portion 31b, an inner flat plate portion 31b, and an outer flat plate. It is the shape which has at least the intermediate
  • the vent hole 30 and the filter 6 are provided in the outer flat plate portion 31d. According to this configuration, the vent hole 30 and the filter 6 are provided on the outer flat plate portion 31d away from the movable iron core 4 that fluctuates in the axial direction. Therefore, the displacement width is smaller than that of the inner flat plate portion 31b and the stress is suppressed. Is installed. Therefore, according to this configuration, it is possible to provide the diaphragm 3 that can suppress a decrease in strength due to the formation of the vent hole 30.
  • the vent hole 30 and the filter 6 are provided in the outer flat plate portion 31d at a position closer to the outer peripheral edge of the outer flat plate portion 31d than the intermediate bent portion 31c. According to this configuration, since the vent hole 30 and the filter 6 are provided on the outer flat plate portion 31d on the outer peripheral edge side away from the intermediate bent portion 31c where the stress increases, the vent hole 30 and the filter 6 are installed in a portion where the stress is suppressed in the outer flat plate portion 31d. Has been. Therefore, according to this configuration, it is possible to provide the diaphragm 3 that can further suppress the strength reduction due to the formation of the vent hole 30.
  • the ventilation hole 30 and the filter 6 are provided in the diaphragm 3 closer to the outer peripheral side bent portion 31e located on the outermost peripheral side than the fixed portion 31a that contacts the movable iron core 4.
  • the vent hole 30 and the filter 6 are provided closer to the outer peripheral side bent portion 31e of the diaphragm 3 than the movable iron core 4 that varies in the axial direction, and thus the displacement width is larger than that of the fixed portion 31a side. It is installed in a small area where stress is suppressed. Therefore, according to this configuration, it is possible to provide the diaphragm 3 in which strength reduction is suppressed by forming the vent hole 30 in a portion where stress is suppressed.
  • vent hole 30 and the filter 6 are provided in the longest flat plate portion having the longest radial length in the longitudinal section of the diaphragm 3 along the axial direction. According to this configuration, the vent hole 30 can be provided at a position where the distance from the bent portion or bent portion where the stress is large in the diaphragm 3 can be secured. According to this configuration, it is possible to provide the diaphragm 3 that can achieve both the strength of the diaphragm 3 and the suppression of poor ventilation.
  • the outer flat plate portion 31d provided with the vent hole 30 and the filter 6 is the longest flat plate portion having the longest radial direction length in the longitudinal section of the diaphragm 3 along the axial direction. According to this configuration, since the outer flat plate portion 31d is the flat plate portion having the longest radial length, the vent hole 30 can be provided at a position where the distance from the bent portion or the bent portion in the diaphragm 3 can be secured. . Therefore, according to this configuration, it is possible to provide the diaphragm 3 that can achieve both the strength of the diaphragm 3 and the suppression of poor ventilation.
  • the vehicle alarm device 1 includes a resonance plate 9 that amplifies sound generated when the movable iron core 4 and the fixed iron core 22 collide.
  • the filter 6 is located on the radially inner side of the outer peripheral edge 90 of the resonance plate 9. According to this configuration, the front surface of the filter 6 is covered with the resonance plate 9. Thereby, even if an external force is applied toward the filter 6, the filter 6 can be protected by the resonance plate 9, so that the filter 6 can be prevented from being peeled off or damaged.
  • the diaphragm 103 includes a fixed portion 31a, an inner flat plate portion 131b having a diameter outside the fixed portion 31a, an outer flat plate portion 131d having a diameter outside the inner flat plate portion 131b, and an intermediate bent portion 131c. And are formed integrally. Accordingly, the diaphragm 103 is arranged in the order of the fixed portion 31 a, the inner flat plate portion 131 b, the intermediate bent portion 131 c, the outer flat plate portion 131 d, the outer peripheral edge side bent portion 31 e, and the outer peripheral edge portion of the diaphragm 103 from the central axis toward the radially outer side. A plate-like member formed integrally is formed.
  • the fixed portion 31a is a portion where the stress generated by the vibration of the movable iron core 4 is smaller than the inner flat plate portion 131b, the intermediate bent portion 131c, the outer flat plate portion 131d, and the like.
  • the intermediate bent portion 131c is a portion that connects the inner flat plate portion 131b and the outer flat plate portion 131d.
  • the stress is higher in the portion closer to the intermediate bend portion 131c, and the stress is rapidly increased in the vicinity of the intermediate bend portion 131c.
  • the stress is maximized in both the suction and repulsion in the entire diaphragm 103.
  • the stress tends to increase as it approaches a bent portion or a bent portion that forms a changing portion in which the inclination of the adjacent flat plate portion changes.
  • the vent hole 30 and the filter 6 are preferably provided closer to the fixed portion 31a side than the intermediate bent portion 131c side in the inner flat plate portion 131b.
  • the inner flat plate portion 131b is the longest flat plate portion having the longest radial length in the longitudinal section of the diaphragm 103 along the axial direction.
  • the inner flat plate portion 131b is longer in the radial direction than the outer flat plate portion 131d in the longitudinal section described above. With this configuration, the stress acting on the inner flat plate portion 131b is relatively smaller than the stress acting on the outer flat plate portion 131d. Since the inner flat plate portion 131b is the longest flat plate portion having the longest radial length, the vent hole 30 and the filter 6 are located in the diaphragm 103 at the radial center located just in the middle from the central axis to the outer peripheral side bent portion 31e. It is located closer to the fixed part 31a than the part 131f.
  • the outer flat plate portion 131d is an annular flat plate portion provided around the inner flat plate portion 131b closer to the outer peripheral edge than the fixed portion 31a in the diaphragm 103.
  • the outer flat plate portion 131d is a flat plate portion located on the outer side of the inner flat plate portion 131b in the flat plate portion provided on the diaphragm 103.
  • the outer flat plate portion 131d has such a shape that it is located on the front side or the resonance plate 9 side from the intermediate bent portion 131c side toward the outer peripheral edge side.
  • the stress is higher in the portion closer to the intermediate bend portion 131c for both suction and repulsion, and the stress is rapidly reduced when proceeding from the intermediate bend portion 131c to the radially outer side.
  • the vent hole 30 and the filter 6 are provided on the longest flat plate portion having the longest radial length in the longitudinal section of the diaphragm 103 along the axial direction. According to this configuration, the vent hole 30 can be provided at a position where the distance from the bent portion or bent portion where the stress is large in the diaphragm 103 can be secured. Therefore, according to this configuration, it is possible to provide the diaphragm 103 that can achieve both the strength of the diaphragm 103 and the suppression of poor ventilation.
  • the diaphragm 103 connects the inner flat plate portion 131b provided closer to the fixed portion 31a, the outer flat plate portion 131d provided on the outer diameter side than the inner flat plate portion 131b, and the inner flat plate portion 131b and the outer flat plate portion 131d. And a middle bent portion 131c.
  • the inner flat plate portion 131b is the longest flat plate portion. According to this configuration, since the inner flat plate portion 131b is the flat plate portion having the longest radial length, the vent hole 30 is provided at a position where the distance from the intermediate bent portion 131c where the stress is large can be secured most in the diaphragm 103. be able to.
  • the vent hole 30 and the filter 6 are provided closer to the fixed portion 31a than the intermediate bent portion 131c in the inner flat plate portion 131b. According to this configuration, the vent hole 30 and the filter 6 are provided closer to the fixed portion 31a than the intermediate bent portion 131c in which the stress is likely to be maximum in the diaphragm 103. Therefore, the displacement width is small and the stress is suppressed. It is installed at the site. Therefore, according to this configuration, it is possible to provide the diaphragm 103 in which the strength reduction is suppressed by forming the vent hole 30 in the portion where the stress is suppressed.
  • a filter 106 which is another form of the above-described embodiment, will be described with reference to FIG.
  • the same configuration as that of the above-described embodiment is described with the same reference numerals in FIG. 5 and has the same effect, and only contents different from the above-described embodiment will be described below.
  • the third embodiment is different from the filter 6 of the first embodiment in the configuration relating to the filter 106 provided on the diaphragm 203.
  • the description of the first embodiment and the second embodiment described above is used for the configuration, the longitudinal cross-sectional shape, and the effects related to the respective parts of the diaphragm 203.
  • the filter 106 is provided on the diaphragm 203 so as to occupy the inside of the vent hole 30.
  • the filter 106 is integrally fixed to the inner peripheral edge of the diaphragm 203 that forms the vent hole 30 by welding or bonding within a range that occupies the entire vent hole 30.
  • the filter 106 suppresses, for example, dust, dust, sand, and the like from entering the ventilation hole 30 from the outside of the housing 11.
  • the filter 106 has air permeability and water repellency.
  • the surface of the filter 106 is subjected to the same water repellent treatment as the filter 6.
  • the filter 106 functions to repel water before entering the vent hole 30 or to prevent water from penetrating into the vent hole 30 by forming water droplets when the diaphragm 203 gets wet. do.
  • the filter 106 prevents the cross section in the vent hole 30 from being filled with water or forms a water film, and allows the air to enter and exit the housing 11.
  • the vehicle alarm device of the third embodiment includes a filter 106 provided on the diaphragm so as to fill the vent hole 30 penetrating the diaphragm 3 over the entire axial direction.
  • the filter 106 since the filter 106 is configured to fill the entire inside of the vent hole 30 of the diaphragm 203 in the axial direction, the filter 106 allows water to pass through the vent hole 30 from the outside. The pores 30 can be prevented from being filled with water. Since the filter 106 does not allow water to easily enter the vent hole 30, it is possible to create a situation in which the surface tension of the water hardly acts in the vent hole 30. This can inhibit water film formation in the vent hole 30. According to this vehicle alarm, since it is possible to prevent the water film from being stretched in the vent hole 30 communicating between the inside and the outside of the housing 11, the vent hole 30 and the filter 106 are provided so as to exhibit a desired air permeability. it can. Further, when the filter 106 has water repellency, the water is repelled by the filter 106, so that it is possible to further inhibit the flow of water that attempts to enter the vent hole 30 through the filter 106.
  • the bobbin 21 is configured such that the first fixed portion 212, the second fixed portion, and the like are fixed to the housing 11 by rivets, but the number of places where the bobbin 21 is fixed to the housing 11 is this number. It is not limited to or location.
  • the vehicle alarm device capable of achieving the object disclosed in this specification may include a diaphragm that is not limited to the longitudinal sectional shape of the diaphragms 3, 103 described in the above embodiment.
  • the diaphragm provided in the vehicle alarm device may have a longitudinal cross-sectional shape that does not have a flat plate portion.
  • the diaphragm provided in the vehicle alarm device capable of achieving the object disclosed in this specification is not limited to the number of flat plate portions and the number of intermediate bent portions described in the above embodiment.
  • the number of flat plate portions may be three or more or one.
  • the number of intermediate bends may be two or more or zero.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Alarm Systems (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention concerne un dispositif avertisseur de véhicule (1) comprenant : une bobine (20) dans un boîtier (11) ayant une ouverture (112a), la bobine (20) produisant une force magnétique par excitation ; un noyau de fer fixe (22) ; et un noyau de fer mobile (4) qui se déplace dans la direction axiale vers le noyau de fer fixe (22) sous l'effet de la force d'attraction magnétique produite par l'excitation de la bobine (20). Le dispositif avertisseur de véhicule (1) comporte une plaque vibrante (3) qui est fixée au boîtier (11) et au noyau de fer mobile de façon à recouvrir l'ouverture (112a), la plaque vibrante (3) vibrant parallèlement au déplacement dans la direction axiale du noyau de fer mobile (4) et amenant l'air à vibrer. Des trous d'aération (30), qui sont des trous traversants, sont ménagés dans la plaque vibrante (3). Un filtre (6) qui recouvre les trous d'aération (30) depuis l'extérieur est disposé sur la plaque vibrante (3). La formation d'une pellicule d'eau dans les trous d'aération communiquant entre l'intérieur et l'extérieur du boîtier peut être supprimée.
PCT/JP2018/045338 2018-03-13 2018-12-10 Dispositif avertisseur de véhicule WO2019176195A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880090764.0A CN111819623A (zh) 2018-03-13 2018-12-10 车辆用报警器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018045637A JP2019159106A (ja) 2018-03-13 2018-03-13 車両用警音器
JP2018-045637 2018-03-13

Publications (1)

Publication Number Publication Date
WO2019176195A1 true WO2019176195A1 (fr) 2019-09-19

Family

ID=67908216

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/045338 WO2019176195A1 (fr) 2018-03-13 2018-12-10 Dispositif avertisseur de véhicule

Country Status (3)

Country Link
JP (1) JP2019159106A (fr)
CN (1) CN111819623A (fr)
WO (1) WO2019176195A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03110953U (fr) * 1990-02-28 1991-11-13

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2907363B2 (ja) * 1992-09-30 1999-06-21 スター精密 株式会社 電気音響変換器
JPH08185187A (ja) * 1994-12-31 1996-07-16 Nissan Shatai Co Ltd 車両用警音器及び車両用警音装置
JP4822188B2 (ja) * 2007-04-05 2011-11-24 日本特殊陶業株式会社 ガスセンサユニット
JP5363051B2 (ja) * 2007-09-07 2013-12-11 株式会社ミツバ 電気式ホーン
DE112011100525B4 (de) * 2011-08-09 2013-11-21 Mitsubishi Electric Corp. Geräuschausstossende Einrichtung
CN206406818U (zh) * 2017-01-24 2017-08-15 老河口市民福冲压件厂 汽车喇叭盖板

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03110953U (fr) * 1990-02-28 1991-11-13

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JP2019159106A (ja) 2019-09-19

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