CN114302829A - Alarm for vehicle - Google Patents
Alarm for vehicle Download PDFInfo
- Publication number
- CN114302829A CN114302829A CN202080060557.8A CN202080060557A CN114302829A CN 114302829 A CN114302829 A CN 114302829A CN 202080060557 A CN202080060557 A CN 202080060557A CN 114302829 A CN114302829 A CN 114302829A
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- China
- Prior art keywords
- fixed
- end side
- support plate
- fixed contact
- housing
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 239000011810 insulating material Substances 0.000 claims abstract description 7
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- 230000002093 peripheral effect Effects 0.000 claims description 28
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 230000008859 change Effects 0.000 description 21
- 230000032683 aging Effects 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 238000004804 winding Methods 0.000 description 9
- 239000004020 conductor Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Images
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
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- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Emergency Alarm Devices (AREA)
- Steering Controls (AREA)
Abstract
An alarm for a vehicle, comprising: a fixed contact support plate (8), wherein the fixed contact support plate (8) is provided with a fixed contact part (80); and a movable contact support plate (7), wherein the movable contact support plate (7) is provided with a movable contact part (70) forming a contact part with the fixed contact part (80). One end side portion (81) of the fixed contact support plate (8) is fixed and housed inside the housing (11). The support member (93) is formed of an insulating material and supports the other end side (82) of the fixed contact support plate (8). The support member (93) is provided with a substrate section (930) and a curved convex section (932) that partially protrudes from the substrate section (930). The curved convex part (932) has a curved convex surface (932a) which is in contact with the other end side part (82) of the fixed contact support plate (8) and supports the other end side part (82).
Description
Cross Reference to Related Applications
The present application is based on japanese patent application No. 2019-157263, filed on 29/8/2019, the disclosure of which is incorporated by reference in its entirety.
Technical Field
The disclosure in this specification relates to a vehicle alarm that sounds an alarm.
Background
Patent document 1 discloses a vehicle alarm device. In the vehicle alarm, the movable core is attracted to the fixed core by the magnetic attraction force with the contact portions closed, the vibrating plate is recessed, and the vibration sound generated when the movable core collides with the fixed core is transmitted to the resonating plate. The vehicle alarm resonates and amplifies the vibration sound through the soundboard to generate sound. When the horn switch is turned on, a current flows through the coil, the movable core is pulled toward the fixed core, and the movable core presses the contact portion, whereby the contact portion is opened, the current is cut off, and the vibration plate is restored. When the diaphragm is restored, the contact portion is closed, and a current flows through the coil again. Thus, the collision of the movable core with the fixed core is repeated, the diaphragm and the soundboard vibrate at high frequency, sound waves are emitted to the front side, and warning sounds are emitted to the outside.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2016-
Disclosure of Invention
In the vehicle alarm device of patent document 1, there are concerns that: the contact position between the support plate and the fixed contact support plate may vary, for example, due to temperature, aging, etc. Accordingly, the contact position between the support plate and the fixed contact support plate may change greatly from a normal state in which an appropriate sound quality is generated. If the contact position of the support plate is largely changed from the normal state, the inclination of the fixed contact support plate with respect to the normal state becomes large, and the position at which the contact portion is opened is largely changed. If the open position of the contact portion is largely changed, there is a problem that sound pressure or sound quality generated by the vehicle alarm device is changed.
An object of the present disclosure is to provide a vehicle alarm device capable of suppressing a change in sound quality due to temperature or aging.
The various modes disclosed in the present specification adopt different technical means to achieve respective purposes. In addition, the numerals in parentheses described in the claims and the claims are merely examples of correspondence relationships with specific embodiments described in the embodiments described below as one mode, and do not limit the scope of protection.
The disclosed alarm for a vehicle includes: a housing having an opening; a coil accommodated in the housing and generating a magnetic force by energization; a fixed iron core accommodated in the case; a movable iron core that is displaced in the axial direction toward the fixed iron core by a magnetic attraction force generated by energizing the coil; a vibrating plate provided so as to cover the opening portion and vibrating in accordance with axial displacement of the movable core; a soundboard that amplifies sound generated when the movable core collides with the fixed core; a fixed contact supporting plate, one end side portion of which is fixed and which is accommodated inside the housing, the fixed contact supporting plate having a fixed contact portion; a movable contact support plate which is accommodated in the housing and has a movable contact portion which comes into contact with the fixed contact portion when the energization of the coil is interrupted and which is separated from the fixed contact portion when the energization of the coil is interrupted; and a support member made of an insulating material and supporting the other end side portion of the fixed contact support plate in the axial direction; wherein,
the support member includes: a substrate portion covering the other end side portion over a length in a width direction orthogonal to a length direction of the fixed contact support plate; and a curved convex portion partially protruding from the base plate portion and having a curved convex surface that contacts the other end side portion of the fixed contact support plate to support the other end side portion.
According to this vehicle alarm, the other end side portion of the fixed contact support plate, one end side portion of which is fixed, is supported in the axial direction while being in contact with the curved convex surface of the support member. Since the surface with which the other end side portion is in contact is a curved convex surface, even if the contact position of the other end side portion and the support member in the axial direction changes due to temperature or aging, the contact position of the other end side portion and the support member hardly changes in the longitudinal direction. Compared with the system of the comparative example in which the fixed contact support plate is supported by the support plate, the inclination of the fixed contact support plate with respect to the normal state is small, and the amount of change in the off position of the contact portion with respect to the normal state can be suppressed. Therefore, it is possible to provide a vehicle alarm device capable of suppressing a change in sound quality due to temperature or aging.
The disclosed alarm for a vehicle includes: a housing having an opening; a coil accommodated in the housing and generating a magnetic force by energization; a fixed iron core accommodated in the case; a movable iron core that is displaced in the axial direction toward the fixed iron core by a magnetic attraction force generated by energizing the coil; a vibrating plate provided so as to cover the opening portion and vibrating in accordance with axial displacement of the movable core; a soundboard that amplifies sound generated when the movable core collides with the fixed core; a fixed contact supporting plate, one end side portion of which is fixed and which is accommodated inside the housing, the fixed contact supporting plate having a fixed contact portion; a movable contact support plate which is accommodated in the housing and has a movable contact portion which comes into contact with the fixed contact portion when the energization of the coil is interrupted and which is separated from the fixed contact portion when the energization of the coil is interrupted; and a support member made of an insulating material, covering the other end side portion of the fixed contact support plate over a length in a width direction orthogonal to a longitudinal direction of the fixed contact support plate, and having a substrate portion supporting the other end side portion in an axial direction; wherein,
a curved convex portion having a curved convex surface contacting the substrate portion is provided on the other end side portion of the fixed contact supporting plate.
According to this vehicle alarm, the other end side portion of the fixed contact support plate having one end side portion fixed is supported by the support member in the axial direction with the curved convex surface thereof contacting the base plate portion. Since the surface of the substrate portion in contact with is a curved convex surface, even if the contact position between the other end side portion and the support member in the axial direction changes due to temperature or aging, the contact position between the other end side portion and the support member hardly changes in the longitudinal direction. Therefore, compared to the embodiment of the comparative example, the inclination of the fixed contact support plate with respect to the normal state is small, and the amount of change in the off position of the contact portion with respect to the normal state can be suppressed. According to the present disclosure, a vehicle alarm device capable of suppressing a change in sound quality due to temperature or aging can be provided.
The disclosed alarm for a vehicle includes: a housing having an opening; a coil accommodated in the housing and generating a magnetic force by energization; a fixed iron core accommodated in the case; a movable iron core that is displaced in the axial direction toward the fixed iron core by a magnetic attraction force generated by energizing the coil; a vibrating plate provided so as to cover the opening portion and vibrating in accordance with axial displacement of the movable core; a soundboard that amplifies sound generated when the movable core collides with the fixed core; a fixed contact supporting plate, one end side portion of which is fixed and which is accommodated inside the housing, the fixed contact supporting plate having a fixed contact portion; a movable contact support plate which is accommodated in the housing and has a movable contact portion which comes into contact with the fixed contact portion when the energization of the coil is interrupted and which is separated from the fixed contact portion when the energization of the coil is interrupted; a support part formed of any one of insulating ceramics, polyphenylene sulfide resin, and carbon fiber reinforced glass, and supporting the other end side part of the fixed contact support plate in the axial direction; and an adjustment screw integrally coupled to the support portion at a distal end portion thereof, the adjustment screw adjusting an axial position of the support portion in accordance with a screw-connection position to the housing; wherein,
the support portion has a curved tip end face that forms a curved face protruding toward the other end side portion of the fixed contact support plate and that is in contact with the other end side portion.
According to this vehicle alarm, the other end side portion of the fixed contact support plate, to which the one end side portion is fixed, is supported in the axial direction while being in surface contact with the curved tip end of the support portion coupled to the tip end portion of the adjustment screw. Since the surface with which the other end side portion is in contact is a curved convex surface, even if the contact position between the other end side portion and the support portion in the axial direction changes due to temperature or aging, the contact position of the support portion hardly changes in the longitudinal direction. Therefore, compared to the embodiment of the comparative example, the inclination of the fixed contact support plate with respect to the normal state is small, and the amount of change in the off position of the contact portion with respect to the normal state can be suppressed. As described above, it is possible to provide a vehicle alarm device capable of suppressing a change in sound quality due to temperature or aging.
Drawings
Fig. 1 is a sectional view of a vehicle alarm device according to a first embodiment.
Fig. 2 is a plan view showing a state in which the movable core, the vibrating plate, the soundboard, and the like are removed, of the alarm for a vehicle.
Fig. 3 is a partial sectional view showing the configuration of the non-fixed side portion of the fixed contact support plate, the support member, and the adjustment portion.
Fig. 4 is a partial perspective view showing an external shape of the support portion.
Fig. 5 is a schematic view of the relationship between the non-fixed side portion of the fixed contact support plate and the support member in the first embodiment when the axial contact position is displaced.
Fig. 6 is a schematic diagram of a relationship between the non-fixed side portion of the fixed contact support plate and the support member in the case where the axial contact position is displaced as a comparative example.
Fig. 7 is a partial perspective view showing an external shape of a support member of the second embodiment.
Fig. 8 is a partial schematic view of the configuration of the non-fixed side portion, the support portion, and the adjustment portion of the fixed contact support plate according to the third embodiment.
Fig. 9 is a partial sectional view showing the configuration of the non-fixed side portion, the support member, and the adjustment portion of the fixed contact support plate according to the fourth embodiment.
Detailed Description
Hereinafter, various modes for carrying out the present disclosure will be described with reference to the drawings. In each of the embodiments, the same reference numerals are used for portions corresponding to the matters described in the previous embodiment, and redundant description may be omitted. In the case where only a part of the structure is described in each embodiment, other embodiments described above may be employed for other parts of the structure. In each embodiment, combinations of parts that can be combined are not specifically specified, and combinations of parts between embodiments can be combined even if not specified, as long as the combinations are not particularly hindered.
(first embodiment)
A vehicle alarm device 1 according to a first embodiment will be described with reference to fig. 1 to 6. The vehicle alarm 1 is a device mounted on a vehicle such as an automobile or a motorcycle, for example, to emit a warning sound to the outside, and is also called an electromagnetic horn. The vehicle alarm device 1 emits an alarm sound to the outside of the vehicle when a predetermined operation unit in the vehicle is operated. The predetermined operation portion is a horn switch provided on, for example, a steering device or a steering wheel, which is operated by the driver. The vehicle alarm 1 is an electromagnetic alarm device that generates an alarm sound corresponding to an operating voltage.
As shown in fig. 1, the vehicle alarm 1 is mounted on a vehicle side member such as a front portion of a radiator, for example, on a front portion of a vehicle via a stay 5. In the vehicle alarm 1, the movable iron core 4 is positioned Forward (FD) of the fixed iron core 22. The vehicle alarm 1 is mounted on a vehicle in a posture in which the axial direction (AXD) of the movable core 4 and the fixed core 22 is directed Forward (FD) and backward (RD) of the vehicle. The vehicle alarm 1 includes: a bottomed cylindrical case 11, and an electromagnetic coil unit 2 housed and fixed in the vicinity of the center in the case 11. The alarm 1 for a vehicle includes a vibration plate 3 also referred to as a diaphragm. The diaphragm 3 is fixed to the housing 11 so as to cover the opening 112a of the housing 11 constituting the outer contour. The diaphragm 3 vibrates with the axial displacement of the movable iron core 4, thereby vibrating air. The electromagnetic coil part 2 includes a coil 20, a bobbin 21, and a fixed core 22. The coil 20 is formed by winding a winding wire around a bobbin 21 made of resin.
The support 5 is fixed to the bottom of the housing 11 and a fixed iron core 22 disposed opposite to the movable iron core 4, and is mounted on a vehicle or the like. The solenoid section 2 is disposed around the axis of the case 11. The case 11 and the diaphragm 3 are members formed by press-molding a plate material of a ferrous magnetic material into a concave shape so as to constitute a part of the magnetic circuit of the electromagnetic coil unit 2. The center hole 3a of the diaphragm 3 and the center hole 6a of the soundboard 6 are fitted to the small diameter portion 41 located in the front of the movable core 4. The movable core 4 is formed integrally with the diaphragm 3 and the soundboard 6 in a state where the small diameter portion 41 is caulked and fixed. The small diameter portion 41 constitutes a coupling portion to couple the diaphragm 3 and the resonator plate 6. The small diameter portion 41 is a joint portion to be coupled to the diaphragm 3 and the resonance plate 6, which is caulked to couple the diaphragm 3 and the resonance plate 6 as other members to the movable core 4.
The small diameter portion 41 of the front portion of the movable iron core 4 is caulked in a state of being inserted into the center portion of the diaphragm 3, whereby the movable iron core 4 is fixed to the diaphragm 3. The fixed core 22 is fixed to the support 5 for mounting to the vehicle together with the center portion of the bottom portion 110 of the housing 11 by a fixing method such as caulking. A rear side end portion 22b provided in the fixed core 22 is a joint portion with the support 5, and the rear side end portion 22b is caulked to join the fixed core 22 to the support 5 as another member.
The housing 11 has a disk-shaped bottom 110 at the rear end, an intermediate flat portion 111, and an outer peripheral edge 112 at the front end, and is integrally formed. The intermediate flat portion 111 is a portion protruding in a disc shape from a distal end portion formed to rise cylindrically from the peripheral edge of the bottom portion 110. The outer peripheral portion 112 forms an opening 112a of the housing 11. The outer peripheral edge 112 is formed to protrude outward from a front end portion formed by rising from the peripheral edge of the intermediate flat portion 111 in a forward tubular shape. The outer peripheral portion of the diaphragm 3 is crimped so as to be crimped to the outer peripheral edge portion 112, and is fixed to the housing 11. The diaphragm 3 covers the opening 112a at the front.
The bobbin 21 is an insulating member integrally formed with a cylindrical portion 210, a flange portion 211, a first fixed portion 212, a second fixed portion 213, a third fixed portion 214, and the like. The outer peripheral surface of the cylindrical portion 210 is provided with a coil 20 formed by winding a wound wire. A fixed core 22 is provided inside the cylindrical portion 210 concentrically with the bobbin 21 and the coil 20. The flange portion 211 is a portion protruding from the end of the cylindrical portion 210 on the diaphragm 3 side in a disc shape. In the bobbin 21, the flange portion 211 forms an end surface extending from the distal end of the cylindrical portion 210 to the periphery. The flange 211 is a portion covering the tip of the coil 20 or the end on the diaphragm 3 side. The first fixed portion 212 is a portion that protrudes outward from the flange portion 211.
A bobbin 21 including a fixed core 22 and a coil 20 is provided on the front side of the bottom portion 110 of the case 11. An end face 22a including an axial tip end of the fixed iron core 22 faces an end face 4a including an axial tip end of the movable iron core 4, and the end face 22a is a collision portion with the movable iron core 4. In the vehicle alarm 1, when the coil 20 is not energized, a gap of a predetermined distance, that is, a so-called air gap, is formed between the end face 4a of the movable iron core 4 and the end face 22a of the fixed iron core 22. The fixed core 22 is present inside the cylindrical portion 210 of the bobbin 21. In other words, the side surface of the fixed core 22 is surrounded by the cylindrical portion 210.
As shown in fig. 2, the first fixed part 212, the movable contact support plate 7, and the fixed contact support plate 8 are stacked on the intermediate flat portion 111. The movable contact supporting plate 7 is formed of a metal spring material having elasticity. The fixed contact support plate 8 is a metal member having higher rigidity than the movable contact support plate 7 and having conductivity. An insulating member is interposed between the movable contact support plate 7 and the fixed contact support plate 8. The laminated portion of the insulating member on the intermediate flat portion 111 prevents the movable contact supporting plate 7 from being electrically conducted with the fixed contact supporting plate 8. These laminated members are integrally fixed by a first metal rivet 90 fixed to the intermediate flat portion 111 by caulking. The fixed contact support plate 8 has a fixed portion at one end side portion 81 fixed by the first rivet 90. The other end side 82 of the fixed contact support plate 8 is a non-fixed side supported by the support member 93 but not fixed. Therefore, the fixed contact supporting plate 8 may be said to have one end side portion 81 as a fixed end and the other end side portion 82 as a free end.
As shown in fig. 2 and 3, the support member 93 includes a base plate portion 930, a curved convex portion 932 partially protruding from the base plate portion 930, and an outer peripheral wall portion 931. The base plate portion 930 is a plate-like portion along the fixed contact support plate 8. The base plate 930 covers the other end side portion 82 on the rear side in the length in the width direction orthogonal to the longitudinal direction of the fixed contact support plate 8. The width-directional length of the substrate portion 930 is larger than the width-directional length of the other end side portion 82. The width direction is also a crossing direction in which the cantilever part 933 extends. The outer peripheral wall 931 is a wall portion rising from the outer edge of the base plate 930 and surrounds the outer edge of the other end side portion 82. The outer peripheral wall portion 931 is provided at a position separated from the outer edge of the other end side portion 82. The outer peripheral wall portion 931 is provided in the support member 93 at a portion other than a portion where the fixed contact support plate 8 is present in the outer edge of the base plate portion 930.
The curved protrusion 932 protrudes from the front surface of the base plate 930. The bent convex 932 is in contact with the other end side 82 of the fixed contact support plate 8, thereby supporting the other end side 82. The curved convex part 932 has a curved convex surface 932a as a tip surface. The curved convex surface 932a forms a surface that is curved so as to warp in the longitudinal direction of the fixed contact support plate 8 and extends in the width direction. The curved protrusion 932 is shaped like a cylinder cut in the longitudinal direction. The curved convex surfaces 932a are high at the center in the longitudinal direction and low at both sides in the longitudinal direction at the center. The height of the curved convex surface 932a relative to the base plate portion 930 is sufficiently lower than the height of the outer peripheral wall portion 931 relative to the base plate portion 930. In a state where the other end side portion 82 is in contact with the curved convex surface 932a, the other end side portion 82 is located lower than the outer peripheral wall portion 931 and is surrounded by the outer peripheral wall portion 931.
The vehicle alarm 1 includes an adjustment screw 94 that can adjust the axial position of the support member 93. The adjustment screw 94 has a male screw portion screwed into a through hole provided in the intermediate flat portion 111 of the housing 11. The distal end 94a of the adjustment screw 94 contacts the rear surface of the support member 93. The adjustment screw 94 axially supports the support member 93 by contact of the distal end portion 94a with the support member 93. The distal end portion 94a contacts the back side of the curved convex portion 932 at the substrate portion 930. The axial position of the tip end portion 94a is determined in accordance with the threaded position at which the adjustment screw 94 is threaded into the housing 11. The adjustment screw 94 can adjust the axial position of the support member 93 by the screw-coupling position with respect to the housing 11.
The support member 93 is formed of an insulating material. Therefore, the support member 93 prevents the adjustment screw 94 from electrically communicating with the fixed contact support plate 8.
The movable contact support plate 7 has a fixed portion fixed by a first rivet 90 on one end side. The other end side of the movable contact support plate 7 is an unfixed side on which the movable contact portion 70 is provided. Therefore, the movable contact supporting plate 7 may be said to have a fixed end on one end side and a free end on the other end side.
One end portion of the winding wire extending from the coil 20 is provided between the movable contact support plate 7 and the first fixed part 212 in a state where an insulating film covering the conductor is peeled off. The one end portion of the winding wire is crimped to the head of the first rivet 90 in accordance with the caulking fixation of the first rivet 90. Thus, the one end portion of the winding wire is conducted to the movable contact support plate 7.
The second fixed portion 213 is laminated on the other part of the intermediate flat portion 111. The second fixed portion 213 is a portion protruding outward from the flange portion 211. The second fixed portion 213 is fixed to the housing 11 by a second metal rivet 91 that is fixed to the intermediate flat portion 111 by caulking. In the electromagnetic coil unit 2, the other end portion of the winding wire extending from the coil 20 is provided along the periphery of the shaft portion of the second rivet 91 in a state where the insulating film covering the conductor is peeled off. The other end portion of the coiled wire is pressed against the head of the second rivet 91 in accordance with the caulking fixation of the second rivet 91. In this manner, by the other end portion of the coiled wire being crimped to the head portion of the second rivet 91, the conductor at the other end portion is conducted to the second rivet 91. Here, the conductor of the winding wire is made of a copper wire, a conductive material other than a copper wire, or a material in which different conductive materials are combined.
Also, the second rivet 91 is insulated from the housing 11 by an insulating member. The second rivet 91 is in conduction with a connector terminal inside the connector 13. The positive potential of the battery is directed to the connector terminal via the horn switch. Therefore, the second rivet 91 is a rivet located on the current-carrying side in the solenoid portion 2. The vehicle alarm 1 may be configured to include a connector terminal that is electrically connected to a distal end portion of the coiled wire that is pressed against the movable contact support plate 7 by caulking of the first rivet 90.
A third fixed portion 214 is laminated on another portion of the intermediate flat portion 111. The third fixed portion 214 is a portion protruding outward from the flange portion 211. The third fixed part 214 is a member fixed to the housing 11 by a metal third rivet 92 fixed to the intermediate flat part 111 by caulking. Thus, the bobbin 21 is fixed to the housing 11 at three positions of the first rivet 90, the second rivet 91, and the third rivet 92.
A cantilever part 933 extending in a cross direction crossing the longitudinal direction of the fixed contact support plate 8 is coupled to the third fixed part 214. The cantilever part 933 is coupled to the third fixed part 214, which is a part fixed to the housing 11, at one end, and coupled to the support member 93 at the other end. The cantilever part 933 may also be referred to as a cantilever whose one end side part is fixed to the housing 11 via the third fixed part 214 and whose other end side part supports the support member 93. The cantilever part 933 can support the support member 93 and can bend so as to absorb the load in accordance with the load received by the support member 93 from the other end side part 82. Since the cantilever portion 933 can be bent, the support member 93 can assume a posture in which the substrate portion 930 is inclined with respect to the direction orthogonal to the axial direction. By having such a posture, the substrate section 930 can follow the posture of the other end side section 82. Even in the state where the cantilever part 933 is bent, the outer peripheral wall 931 is not arranged to contact the outer edge of the other end side 82 of the fixed contact support plate 8.
A movable contact portion 70 protruding toward the fixed contact support plate 8 is provided on the other end side of the movable contact support plate 7. The fixed contact support plate 8 is provided with a fixed contact portion 80 protruding toward the movable contact support plate 7 at a position corresponding to the movable contact portion 70. The movable contact portion 70 and the fixed contact portion 80 are disposed to be opposed to each other in the axial direction. The movable contact portion 70 is pressed toward the fixed contact support plate 8 by a spring force of the movable contact support plate 7, and constitutes a normally closed contact which is in contact with the fixed contact portion 80.
A large diameter portion 42 protruding radially outward from the other portions is formed on the entire outer peripheral surface of the movable core 4. The large diameter portion 42 has a pressing portion that is in contact with the pressed portion 71 of the movable contact support plate 7 near the horn center and presses the pressed portion rearward, that is, toward the fixed core 22. The pressing part is made of an insulating material. The pressing portion can be formed integrally with the movable core 4 by caulking the rear side of the pressing portion to the movable core 4. The caulking portion is a plastically deformed processing portion that is caulked to couple the movable iron core 4 to the pressing portion. The fixed core 22 magnetized when the coil 20 is energized attracts the movable core 4, and the large diameter portion 42 is displaced rearward, that is, toward the fixed core 22. Then, the pressed portion 71 of the movable contact support plate 7 is pressed toward the fixed core 22 by the pressing portion of the large diameter portion 42, and the fixed contact portion 80 and the movable contact portion 70 are separated, and the contact portions are opened.
The operation of the vehicle alarm 1 will be described. When the horn switch is turned on, the current from the vehicle-mounted power supply flows from the connector terminal through the second rivet 91, the other end portion of the wound wire, and the coil 20 in this order. Further, the current flows through the one end portion of the winding wire, the movable contact support plate 7, the movable contact portion 70, the fixed contact portion 80, the fixed contact support plate 8, the first rivet 90, the housing 11, the fixed core 22, the support 5, and the vehicle body (ground) in this order.
In the vehicle alarm 1, the other end portion of the coiled wire is electrically connected to the second rivet 91, and the one end portion of the coiled wire is electrically connected to the movable contact support plate 7. Thereby, the electromagnetic force of the electromagnetic coil unit 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. When the movable core 4 moves axially due to the magnetic attraction force generated by the fixed core 22, the diaphragm 3 moves and deforms in a state where the peripheral edge portion is fixed, the center portion of the diaphragm 3 and the movable core 4 move integrally. By this displacement of the movable iron core 4, the pressing portion of the movable iron core 4 presses the pressed portion 71 of the movable contact support plate 7, and the movable contact portion 70 is separated from the fixed contact portion 80. As a result, the current supply to the solenoid portion 2 is cut off, and the electromagnetic force disappears. When the electromagnetic force disappears, the movable iron core 4 returns to the original position by the elastic force of the diaphragm 3, and the closed state of the movable contact portion 70 and the fixed contact portion 80 returns. When the voltage applied to the coil 20 increases in a state where the contact portions are closed, the movable iron core 4 approaches the fixed iron core 22 due to the magnetic attraction force from the fixed iron core 22. By repeating these operations, the movable core 4 repeatedly collides with the fixed core 22, and the diaphragm 3 and the soundboard 6 vibrate at high frequencies, whereby sound waves are emitted forward.
In the vehicle alarm device 1, it is preferable that the sound quality to be generated does not change greatly due to an increase in the number of years of use or environmental changes. Therefore, it is required that the sound quality does not change greatly from the sound quality in a normal state set before shipment of the product. In order to ensure sound quality in a normal state, it is necessary to set an appropriate off gap (off gap) before shipping the product. The open gap is a distance between the pressing portion of the movable core at the time of non-energization and the pressed portion 71 of the movable contact support plate 7 pressed by the pressing portion at the time of energization to separate the movable contact portion 70 from the fixed contact portion 80. When the opening gap is small, the movable contact portion 70 is separated from the fixed contact portion 80 earlier, and therefore the electromagnetic force generation time of the coil 20 is shortened, the amplitude of the diaphragm 3 is reduced, and the sound pressure is low. When the opening gap is large, the amount of pressing of the pressing portion of the movable iron core against the pressed portion 71 becomes small. Therefore, the distance between the movable contact portion 70 and the fixed contact portion 80 when the movable contact portion is separated from each other is reduced, and the effect of cutting off the current of the coil is reduced. As a result, the balance between the suction action and the recovery action of the movable iron core 4 due to the interruption of the current is lost, and the amplitude of the diaphragm 3 becomes unstable, resulting in a change in sound quality.
Therefore, the vehicle alarm includes an adjustment screw screwed to the housing. Before shipping of the product, the axial position of the support member is set by adjusting the screw-in position of the adjustment screw, thereby setting the opening gap within an appropriate range. The contact position between the support member 93 and the other end side portion 82, which is set at an appropriate axial position by the adjustment screw, may be changed by deformation such as distortion of the support member 93 due to a temperature environment or aging. The change in the axial contact position will be described with reference to fig. 5 and 6.
Fig. 5 shows a relationship when the axial contact position is displaced with respect to a contact state between the other end side portion 82 of the fixed contact support plate 8 and the support member 93 in the first embodiment. Fig. 6 shows a positional relationship when the axial contact position is displaced with respect to a contact state between the other end side portion 82 of the fixed contact support plate 8 and the substrate portion 930 as a comparative example of the first embodiment. In the comparative example, since the support member does not have the bent convex portion as described in the first embodiment, the substrate portion 930 is configured to be in contact with the other end side portion 82.
In fig. 5 and 6, the axial contact position ax0 is a contact position in the axial direction, and is a normal position adjusted by the adjustment screw 94 to generate appropriate sound quality. The axial contact position ax1 shows a state in which the base plate portion 930 or the curved protrusion 932 is located on the front side or the diaphragm 3 side from the normal position. The axial contact position ax2 shows a state in which the base plate portion 930 is located on the rear side or the fixed iron core 22 side from the normal position.
As shown in fig. 5, the other end side portion 82 of the vehicle alarm device according to the first embodiment contacts an apex passing through the center axis at the curved convex surface 932a at the axial contact position ax0, i.e., in the normal state. In the state of the axial contact position ax1, the other end side portion 82 contacts a portion of the curved convex surface 932a closer to the one end side portion 81 of the fixed contact support plate 8 than the apex. Thus, in the state of the axial contact position ax1, the fixed contact support plate 8 is in an inclined posture in which the other end is positioned forward of the one end with respect to the normal state. In the state of the axial contact position ax2, the other end side portion 82 contacts a portion closer to the other end of the fixed contact support plate 8 than the apex on the curved convex surface 932 a. Thus, in the state of the axial contact position ax2, the fixed contact support plate 8 is in an inclined posture in which the other end is positioned more rearward than the one end with respect to the normal state. In either case of the axial contact positions ax1 and ax2, the contact site of the other end side portion 82 at the curved convex surface 932a does not change greatly in the length direction with respect to the normal state. Therefore, even if the support member 93 is deformed by being skewed or the like, the open position of the contact portion of the vehicle alarm device of the first embodiment hardly changes from the normal state.
On the other hand, as shown in fig. 6, the other end side portion 82 of the comparative example is in contact with the entire front side of the substrate portion 930 at the axial contact position ax0, i.e., in the normal state. In the state of the axial contact position ax1, the other end side portion 82 contacts the end portion of the base plate 930 close to the one end of the fixed contact support plate 8. Thus, in the state of the axial contact position ax1, the fixed contact support plate 8 is in a posture inclined more greatly than the state shown in fig. 5 so that the other end is positioned more forward than the one end with respect to the normal state. In the state of the axial contact position ax2, the other end side portion 82 contacts the end portion of the base plate 930 close to the other end of the fixed contact support plate 8. Thus, in the state of the axial contact position ax2, the fixed contact support plate 8 is in a posture inclined more largely than the state shown in fig. 5 so that the other end is positioned more rearward than the one end with respect to the normal state. In either case of the axial contact positions ax1 and ax2, the contact site of the other end side portion 82 at the curved convex surface 932a largely changes in the length direction with respect to the normal state. Therefore, when the support member 93 is deformed due to distortion or the like, the open position of the contact portion of the vehicle alarm device of the comparative example greatly changes from the normal state. As a result, as described above, the sound pressure is likely to decrease, or the amplitude of the diaphragm 3 is likely to become unstable, which causes a change in sound quality.
As described above, in the vehicle alarm device 1, the contact position between the other end side portion 82 and the support member is not greatly displaced in the longitudinal direction with respect to the comparative example, and therefore, it is possible to contribute to suppressing a change in sound quality.
The operation and effect of the vehicle alarm device 1 according to the first embodiment will be described. The vehicle alarm 1 includes: a housing 11; a coil 20 which is accommodated in the case 11 and generates a magnetic force by being energized; and a fixed iron core 22 accommodated in the housing 11. The vehicle alarm 1 includes: a movable iron core 4 that is displaced toward the fixed iron core 22 by a magnetic attractive force generated by energization; and a vibrating plate 3, the vibrating plate 3 vibrating with the axial displacement of the movable iron core 4. The vehicle alarm 1 includes a soundboard 6 for amplifying a sound generated when the movable core 4 collides with the fixed core 22, and a fixed contact support plate 8 and a movable contact support plate 7 accommodated in a housing 11. The vehicle alarm 1 includes a support member 93 formed of a material having an insulating property, and the support member 93 supports the other end side portion 82 of the fixed contact support plate 8. One end side portion 81 of the fixed contact support plate 8 is fixed, and the other end side portion 82 is supported by the support member 93 and accommodated in the inside of the housing 11. The support member 93 includes a base plate portion 930, and a curved convex portion 932 partially protruding from the base plate portion 930. The base plate 930 covers the other end side portion 82 over the length in the width direction orthogonal to the longitudinal direction of the fixed contact support plate 8. The curved convex part 932 has a curved convex surface 932a that contacts the other end side part 82 of the fixed contact support plate 8 to support the other end side part 82.
According to the vehicle alarm 1, the other end side portion 82 of the fixed contact support plate 8 is configured to be supported in the axial direction in contact with the curved convex surface 932a of the support member 93. The contact position of the other end side portion 82 and the support member 93 in the axial direction may vary due to deterioration or the like caused by temperature or aging. According to the vehicle alarm 1, since the other end side portion 82 is supported in contact with the curved convex surface 932a, the contact position in the longitudinal direction of the fixed contact support plate 8 hardly changes even if the contact position in the axial direction changes. Accordingly, the inclination of the fixed contact support plate 8 with respect to the normal state is smaller than that of the comparative example, and the amount of change in the off position of the contact portion with respect to the normal state can be suppressed. The vehicle alarm device 1 has a unique configuration capable of suppressing a change in sound quality due to temperature or aging.
The vehicle alarm 1 includes an adjustment screw 94 that contacts the base plate 930 at a distal end 94a to axially support the support member 93. The adjustment screw 94 can adjust the axial position of the support member 93 according to the screwing position of the screw with the housing 11. The alarm device 1 for a vehicle includes a bendable cantilever portion 933, and the cantilever portion 933 has one end portion coupled to a member fixed to the housing 11 and the other end portion coupled to the support member 93. The support member 93 is provided with an outer peripheral wall portion 931 rising from an outer edge of the base plate portion 930. The outer peripheral wall portion 931 surrounds the other end side portion 82 without contacting the outer edge of the other end side portion 82 in the state where the cantilever portion 933 is not bent or in the state where it is bent.
According to this structure, even in a state where the load acting on the support member 93 is large and the cantilever portion 933 is bent, the outer peripheral wall portion 931 does not contact the outer edge of the other end side portion 82. Therefore, the posture of the substrate portion 930 can follow along the other end side portion 82 without being hindered by the outer circumferential wall portion 931. Therefore, the vehicle alarm 1 can reliably support the other end side portion 82 by the curved convex surface 923a, and thus can more reliably suppress a change in sound quality.
(second embodiment)
In the second embodiment, the curved convex portion 1932 of the support member 193 is explained with reference to fig. 7. The second embodiment differs from the first embodiment only in the curved convex portion 1932. The configuration of the second embodiment other than the curved convex portion 1932 is the same as that of the first embodiment, and has the same operational effects, and only the differences from the first embodiment will be described below.
As shown in fig. 7, the support member 193 includes a base plate portion 930, curved protrusions 1932 that partially protrude from the base plate portion 930, and an outer peripheral wall portion 931. The curved protrusion 1932 protrudes from the front surface of the substrate 930. The curved convex portion 1932 contacts the other end side portion 82 of the fixed contact support plate 8 and supports the other end side portion 82. The curved convex portion 1932 has a curved convex surface 1932a as a tip surface. The curved convex surface 1932a forms a surface that is curved so as to warp in the longitudinal direction of the fixed contact support plate 8 and in the width direction orthogonal to the longitudinal direction. The curved convex portion 1932 has a shape forming a part of an ellipsoid or a spherical body. The height of the curved convex surface 1932a relative to the base plate portion 930 is sufficiently lower than the height of the outer peripheral wall portion 931 relative to the base plate portion 930. In a state where the other end side portion 82 is in contact with the curved convex surface 1932a, the other end side portion 82 is located lower than the outer peripheral wall portion 931 and is surrounded by the outer peripheral wall portion 931.
According to the second embodiment, even when the contact position of the support member 193 and the other end side portion 82 is deviated in the longitudinal direction and the width direction from the appropriate state, the positional deviation width can be reduced. This makes it possible to provide a vehicle alarm device that can suppress the extent of deviation of the contact position with respect to loads in various directions applied to the support member 193.
(third embodiment)
A third embodiment will be described with reference to fig. 8. The third embodiment is different from the first embodiment in that a support portion 1941 that supports the other end side portion 82 of the fixed contact support plate 8 in the axial direction. The configuration, operation, and effect not particularly described in the third embodiment are the same as those of the first embodiment, and only different portions will be described below.
As shown in fig. 8, the vehicle alarm of the third embodiment includes a support portion 1941, and the support portion 1941 supports the other end side portion 82 of the fixed contact support plate 8 in the axial direction. The support portion 1941 is formed of a material having high heat resistance and insulation. The support portion 1941 prevents the adjustment screw 194 from electrically communicating with the fixed contact support plate 8. The support portion 1941 is formed of any one material such as ceramics, polyphenylene sulfide resin, and carbon fiber reinforced glass. The support portion 1941 is integrally provided at a distal end portion of the adjusting screw 194. The supporting portion 1941 has a curved tip end surface 1941a which is in contact with the other end side portion 82 of the fixed contact supporting plate 8. The curved tip end surface 1941a forms a curved surface that is convex toward the other end side portion 82. The curved tip end surface 1941a is formed as a surface curved so as to warp with respect to the longitudinal direction of the fixed contact support plate 8, and is formed as a surface extending in the width direction. The curved distal end surface 1941a is a surface having a high center in the longitudinal direction and low sides in the longitudinal direction. The axial position of the support portion 1941 is determined according to the threaded position at which the adjustment screw 194 is threaded into the housing 11. The adjustment screw 194 can adjust the axial position of the support portion 1941 by the threaded position with respect to the housing 11.
The vehicle alarm device of the third embodiment includes the adjustment screw 194 integrally coupled to the support portion 1941 at the distal end portion. The support portion 1941 is formed of any one of ceramics, polyphenylene sulfide resin, and carbon fiber reinforced glass. The support portion 1941 has a curved tip end surface 1941a, which curved tip end surface 1941a forms a curved surface protruding toward the other end side portion 82, and is in contact with the other end side portion 82.
According to this vehicle alarm, the other end side portion 82 is supported in the axial direction while being in contact with the curved distal end surface 1941a of the support portion 1941 coupled to the distal end portion of the adjustment screw 194. According to the curved tip end surface 1941a, even if the axial contact position of the other end side portion with the bearing portion 1941 changes from the normal state, the contact position hardly changes in the longitudinal direction. Therefore, compared to the embodiment of the comparative example, the inclination of the fixed contact support plate 8 with respect to the normal state is small, and the amount of change in the off position of the contact portion with respect to the normal state can be suppressed. The vehicle alarm device according to the third embodiment has a unique configuration capable of suppressing a change in sound quality due to temperature or aging.
(fourth embodiment)
A fourth embodiment will be described with reference to fig. 9. The fourth embodiment differs from the first embodiment in the structures of the support member 293 and the fixed contact support plate 108. The configuration, operation, and effect not particularly described in the fourth embodiment are the same as those of the first embodiment, and only different portions will be described below.
As shown in fig. 9, the support member 293 includes a base plate 930 and an outer peripheral wall 931. The support member 293 is not provided with the bent convex portion as described in the first embodiment. The fixed contact support plate 108 includes a bent convex portion 83 protruding from the other end side portion 82. The curved convex portion 83 protrudes from a surface of the other end side portion 82 on the front side or the adjusting screw 94 side. The curved protrusion 83 contacts the base plate 930 of the support member 293. The support member 293 supports the other end side portion 82. The curved convex portion 83 has a curved convex surface 83a as a tip surface. The curved convex surface 83a is formed as a surface curved so as to warp in the longitudinal direction of the fixed contact support plate 108 and in the width direction orthogonal to the longitudinal direction. The curved convex portion 83 has a shape forming a part of an ellipsoid or a spherical body.
The curved convex surface 83a may be curved so as to warp in the longitudinal direction of the fixed contact support plate 108 and may be configured as a surface extending in the width direction. The curved convex portion 83 may also be shaped like a cylinder cut in the longitudinal direction. In this case, the curved convex surface 83a is a surface having a high center in the longitudinal direction and low sides in the longitudinal direction at the center.
According to the fourth embodiment, the curved convex portion 83 is provided on the other end side portion 82 of the fixed contact supporting plate 108, and the curved convex portion 83 has the curved convex surface 83a contacting the substrate portion 930. According to this vehicle alarm, the curved convex surface 83a of the other end side portion 82 of the fixed contact support plate 108 is in contact with the base plate portion 930, and is axially supported by the support member 293. Since the surface of the substrate portion 930 which is in contact with is the curved convex surface 83a, even if the contact position between the other end side portion 82 and the support member 293 in the axial direction changes due to temperature or aging, the contact position hardly changes in the longitudinal direction. Therefore, compared to the embodiment of the comparative example, the inclination of the fixed contact support plate 108 with respect to the normal state is small, and the amount of change in the off position of the contact portion with respect to the normal state can be suppressed.
(other embodiments)
The inventive content of the present specification is not limited to the embodiments listed. This summary includes the embodiments listed and variations thereof that would be made by one skilled in the art based thereon. For example, the present disclosure is not limited to the combinations of the components and elements disclosed in the embodiments, and may be implemented by various modifications. The present disclosure may be implemented in various combinations. The present disclosure may also have an additional portion that can be added to the embodiments. The present disclosure also includes embodiments in which components and elements are omitted from the embodiments. The present disclosure also includes substitutions and combinations of parts and elements between one embodiment and another embodiment. The technical scope of the disclosure is not limited to the description of the embodiments. The technical scope of the present disclosure is defined by the description of the claims, and all changes that come within the meaning and range of equivalency of the claims are to be embraced therein.
The vehicle alarm device that can achieve the object disclosed in the present specification includes not only a structure in which the axial position of the support member can be adjusted by the adjustment screw, but also a structure in which the axial position of the support member is set at a fixed position. In this case, the vehicle alarm may be configured such that the support member is integrally provided on the housing 11.
In the above embodiment, the fixed core 22 may be fixed to the support 5 together with the central portion of the bottom portion 110 of the housing 11 by a fastening mechanism such as a nut. In this case, an external thread portion that is screwed into an internal thread portion of the nut is formed at the rear side end portion 22b of the fixed core 22.
Claims (8)
1. An alarm for a vehicle, comprising:
a housing (11) having an opening (112 a);
a coil (20) which is accommodated in the housing and generates a magnetic force by being energized;
a fixed core (22) accommodated in the housing;
a movable iron core (4) that is displaced in the axial direction toward the fixed iron core by a magnetic attraction force generated by energizing the coil;
a vibration plate (3) that is provided so as to cover the opening and vibrates in accordance with the axial displacement of the movable iron core;
a soundboard (6) that amplifies sound generated when the movable core collides with the fixed core;
a fixed contact support plate (8) having a fixed contact portion (80) and one end side portion (81) fixed and housed inside the housing;
a movable contact support plate (7) which is housed inside the housing and has a movable contact portion (70) which comes into contact with the fixed contact portion when the energization of the coil is interrupted and which is separated from the fixed contact portion when the energization of the coil is interrupted; and
a support member (93, 193) which is formed of an insulating material and supports the other end side portion (82) of the fixed contact support plate in the axial direction; wherein,
the support member includes: a substrate section (930) that covers the other end side section over a length in a width direction orthogonal to a length direction of the fixed contact support plate; and a curved convex portion (932, 1932) which partially protrudes from the base plate portion and has a curved convex surface (932a, 1932a) which comes into contact with the other end side portion of the fixed contact support plate to support the other end side portion.
2. An alarm for a vehicle, comprising:
a housing (11) having an opening (112 a);
a coil (20) which is accommodated in the housing and generates a magnetic force by being energized;
a fixed core (22) accommodated in the housing;
a movable iron core (4) that is displaced in the axial direction toward the fixed iron core by a magnetic attraction force generated by energizing the coil;
a vibration plate (3) that is provided so as to cover the opening and vibrates in accordance with the axial displacement of the movable iron core;
a soundboard (6) that amplifies sound generated when the movable core collides with the fixed core;
a fixed contact support plate (108) having a fixed contact portion (80) and one end side portion (81) fixed and housed inside the housing;
a movable contact support plate (7) which is housed inside the housing and has a movable contact portion (70) which comes into contact with the fixed contact portion when the energization of the coil is interrupted and which is separated from the fixed contact portion when the energization of the coil is interrupted; and
a support member (293) which is formed of an insulating material, covers the other end side portion (82) of the fixed contact support plate over a length in a width direction orthogonal to a longitudinal direction of the fixed contact support plate, and has a substrate portion (930) that supports the other end side portion in the axial direction; wherein,
a curved convex portion (83) having a curved convex surface (83a) that contacts the substrate portion is provided on the other end side portion of the fixed contact support plate.
3. The alarm for a vehicle according to claim 1 or 2, comprising:
an adjustment screw (94) that contacts the base plate portion at a distal end portion (94a) to support the support member in the axial direction, and adjusts the axial position of the support member in accordance with a threaded position at which the support member is threaded with the housing; and
a cantilever portion 933 that is bendable and has one end portion coupled to a member 214 fixed to the housing and the other end portion coupled to the support member,
an outer peripheral wall portion (931) rising from an outer edge of the base plate portion is provided on the support member,
the outer peripheral wall portion surrounds the other end side portion without contacting an outer edge of the other end side portion in a state where the cantilever portion is not bent and in a state where the cantilever portion is bent.
4. The alarm for a vehicle according to any one of claims 1 to 3, wherein the curved convex portion has a shape forming a part of an ellipsoid or a spherical body.
5. An alarm for a vehicle, comprising:
a housing (11) having an opening (112 a);
a coil (20) which is accommodated in the housing and generates a magnetic force by being energized;
a fixed core (22) accommodated in the housing;
a movable iron core (4) that is displaced in the axial direction toward the fixed iron core by a magnetic attraction force generated by energizing the coil;
a vibration plate (3) that is provided so as to cover the opening and vibrates in accordance with the axial displacement of the movable iron core;
a soundboard (6) that amplifies sound generated when the movable core collides with the fixed core;
a fixed contact support plate (8) having a fixed contact portion (80) and one end side portion (81) fixed and housed in the housing;
a movable contact support plate (7) which is housed inside the housing and has a movable contact portion (70) which comes into contact with the fixed contact portion when the energization of the coil is interrupted and which is separated from the fixed contact portion when the energization of the coil is interrupted;
a support portion (1941) which is formed of any one of insulating ceramics, polyphenylene sulfide resin, and carbon fiber reinforced glass, and supports the other end side portion (82) of the fixed contact support plate in the axial direction; and
an adjustment screw (194) that is integrally coupled to the support portion at a distal end portion thereof and adjusts an axial position of the support portion in accordance with a screw connection position to the housing; wherein,
the support portion has a curved tip end surface (1941a) which forms a curved surface protruding toward the other end side portion of the fixed contact support plate and is in contact with the other end side portion.
6. The alarm for a vehicle according to claim 5, wherein the support portion is formed of ceramic.
7. The alarm for a vehicle according to claim 5, wherein the support portion is formed of polyphenylene sulfide resin.
8. The alarm for a vehicle according to claim 5, wherein the support portion is formed of carbon fiber-reinforced glass.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-157263 | 2019-08-29 | ||
| JP2019157263A JP7268543B2 (en) | 2019-08-29 | 2019-08-29 | vehicle horn |
| PCT/JP2020/017904 WO2021038964A1 (en) | 2019-08-29 | 2020-04-27 | Vehicle alarm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114302829A true CN114302829A (en) | 2022-04-08 |
| CN114302829B CN114302829B (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080060557.8A Active CN114302829B (en) | 2019-08-29 | 2020-04-27 | Alarm for vehicle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7268543B2 (en) |
| CN (1) | CN114302829B (en) |
| WO (1) | WO2021038964A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP7268543B2 (en) | 2023-05-08 |
| WO2021038964A1 (en) | 2021-03-04 |
| JP2021033232A (en) | 2021-03-01 |
| CN114302829B (en) | 2024-02-23 |
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