JP7203420B2 - alarm - Google Patents

Description

The present invention relates to alarms, and more particularly to electrical alarms.

An electric alarm is one of vehicle security components used to call attention to the surroundings. Conventionally, for such an alarm, there has been proposed a configuration for reliably operating the alarm even in stormy weather such as heavy rain. In order to realize reliable operation of the alarm device, it is important to prevent foreign matter such as water and dust from entering the internal space of the alarm device body.

However, due to its structure, the electric alarm cannot seal the internal space of the alarm main body. For this reason, the applicant adopted the configuration disclosed in Japanese Utility Model Publication No. 7-34477 to prevent foreign matter from entering the internal space of the main body of the electric alarm device. It is realized at low cost.

Japanese Utility Model Publication No. 7-34477

In recent years, vehicles have become smaller and it has become difficult to secure a place to install the alarm under the hood. may have to be mounted at an angle to the In the alarm device attached to the vehicle in such a state that it is inclined with respect to the ground surface, even with the configuration disclosed in Patent Document 1, it is possible that the internal space of the alarm device body may be affected by the wind, etc. Intrusion of foreign matter occurs, and proposals for more reliable measures to prevent foreign matter intrusion are desired.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and has the following objectives. In other words, regardless of the external environment represented by the weather or the state of attachment to the vehicle, etc., it is possible to reliably prevent foreign matter from entering the internal space of the alarm body and to operate the alarm reliably. It is to provide a configuration of an alarm.

As a result of the inventor's intensive research to realize the configuration of the alarm device, the following configuration was conceived. In other words, according to the present invention, a vent hole is formed for ventilation between the inner space and the outer space of the alarm main body, and electrical connection is established by connecting the alarm-side connector and the vehicle-side connector provided in the alarm main body. wherein the alarm device-side connector has a bag-like connector housing into which the vehicle-side connector is inserted through an opening, and by inserting the vehicle-side connector into the connector housing, the An air passage is formed in the connector housing for communicating the air hole and the opening, and the air passage communicates with the external space in the middle of the air passage through an external communication hole drilled in the connector housing. It is characterized by

As a result, even if a part of the ventilation passage connecting the internal space and the external space of the alarm main body is flooded due to stormy weather such as heavy rain or the state that the alarm is attached to the vehicle etc. in an inclined state, The external communication hole provided in the middle of the ventilation path can prevent the ventilation path from becoming a conduit like a straw. As a result, the suction force generated by the vibration of the diaphragm in the internal space of the alarm main body can take in air from the external space, but it is possible to prevent foreign substances such as water and sand from being taken in. Therefore, it is possible to reliably operate the alarm regardless of the external environment or the state of attachment to the vehicle or the like.

A spaced portion is formed between the connector housing and an insertion-side tip portion of the vehicle-side connector inserted into the connector housing, and the external communication hole is formed at a position of the spaced portion. preferably.

Moreover, it is preferable that the external communication hole is formed in a side surface of the alarm-side connector.

As a result, it is possible to more reliably prevent water and foreign matter from entering the internal space of the alarm body without the use of additional parts and only with simple construction, and to discharge water and foreign matter through the opening and the external communication hole. can be made

Moreover, it is preferable that the opening of the connector housing has a notch extending in the insertion direction of the vehicle-side connector. Furthermore, it is preferable that the notch is formed at a position directly above the air passage.

As a result, the contact area between the alarm-side connector and the vehicle-side connector can be reduced, and water can be more reliably prevented from entering the air passage due to surface tension. Also, even if water or foreign matter enters the air passage, it can be easily discharged from the opening.

Further, it is preferable that the alarm device-side connector and the vehicle-side connector are formed in a rectangular cross-sectional shape without irregularities in a cross-sectional shape in a direction perpendicular to the connecting direction.

As a result, it is possible to minimize the mutual contact area when connecting the alarm-side connector and the vehicle-side connector. Therefore, even if water enters between the alarm-side connector and the vehicle-side connector, the surface tension is reduced, so that the water that has entered can be discharged to the outside space by the action of gravity.

By adopting the configuration of the alarm device of the present invention, it is possible to establish a state in which the outside space and the inside of the ventilation path are communicated at the midpoint of the ventilation path formed in the shape of a pipe such as a straw. For this reason, the suction force generated by the vibration of the diaphragm housed in the internal space of the alarm body can take in air sucked from the external space into the internal space of the alarm body, but water and Foreign matter such as sand can be prevented from being sucked. That is, it is possible to reliably prevent foreign matter from entering the internal space of the alarm device body, and the alarm device can be reliably operated regardless of the external environment or the state of attachment to a vehicle or the like.

It is a front view of the alarm device in this embodiment. It is a rear view of the alarm device in this embodiment. FIG. 4 is an enlarged explanatory view showing a state in which the vehicle-side connector is inserted into the alarm device-side connector; It is explanatory drawing of an alarm device side connector.

An embodiment of an alarm device according to the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the alarm 100 according to the present embodiment has a spiral sound path 12 on the front side of the alarm body 10 and a sound emitting portion 14 communicating with the sound path. A vent hole 16 and an alarm-side connector 18 are formed on the back side of 10 . The alarm device 100 has a contact, an electromagnet, a shaft, and a diaphragm (not shown) housed in the internal space of the alarm body 10, and is not shown by inserting (connecting) the vehicle-side connector 40 to the alarm device-side connector 18. Electric power supplied from the battery is supplied to the electromagnet through the contacts.

When electric power is supplied to the electromagnet, the shaft with the diaphragm attached moves toward and away from the electromagnet, an alarm sound is generated in the internal space of the alarm body 10, and the alarm sound is transmitted from the sound emitting portion 14 to the external space through the sound path 12. is emitted. Since the basic configuration of such an electric alarm device 100 is well known, detailed description of each component configuration will be omitted. A vehicle mounting bracket 20 formed by a known method such as sheet metal is attached to the back side of the alarm main body 10 in this embodiment.

As shown in FIGS. 2 and 3, the ventilation hole 16 is for ventilation between the internal space and the external space of the alarm body 10, and is perforated on the rear side of the alarm body 10. As shown in FIGS. A part of the energizing terminal 30 electrically connected to the contact housed in the internal space of the alarm body 10 is partially exposed from the back side of the alarm body 10 at the position of the air hole 16. . The alarm-side connector 18 is formed so as to cover the energization terminals 30 exposed to the outside space at the position of the vent hole 16 . The current-carrying terminal 30 in this embodiment is formed of a rivet 32 and a flat plate terminal 34 . The rivet 32 is electrically connected to a contact terminal (not shown) housed in the interior space of the alarm body 10 and is inserted through a rivet insertion hole 33 formed in a flat plate terminal 34 . When the alarm main body 10 is assembled, the heads of the rivets 32 exposed to the outside from the alarm-side connector 18 are crimped. The flat terminal 34 extends from the rear surface of the alarm body 10 substantially parallel to the ground surface.

As shown in FIGS. 2 to 4, the alarm-side connector 18 has a bag-like shape with an opening 18A formed on the ground surface side (lower surface side), and has a connector housing 18B into which the vehicle-side connector 40 can be inserted. are doing. In this embodiment, a notch 18C extends in the insertion direction of the vehicle-side connector 40 from the opening 18A of the connector housing 18B.

In addition, an external communication hole 18D is formed in the side surface of the connector housing 18B to communicate the external space with the inside of the connector housing 18B. 2 to 4, the external communication hole 18D is preferably provided on the side surface of the vehicle mounting bracket 20 side. This is advantageous in that the probability of water entering from the external communication hole 18D can be reduced.

Furthermore, an insertion restricting portion 18E for positioning the insertion-side distal end portion 42 of the vehicle-side connector 40 can be provided at a position on the far side (on the power terminal 30 side) of the connector housing 18B. In the present embodiment, a protrusion is formed inside the connector housing 18B as the insertion restricting portion 18E, but it is not limited to this form. Note that the insertion restricting portion 18E can be provided at a position other than the innermost position of the connector housing 18B. Furthermore, an insertion restricting portion can be formed on the vehicle-side connector 40 side.

The vehicle-side connector 40 is formed in a flat rectangular parallelepiped shape that can be inserted into the connector housing 18B from the opening 18A of the vehicle-side connector 40, as shown in FIG. A spring-like electrode 44 capable of sandwiching the flat terminal 34 is embedded in an insertion-side distal end portion 42 of the vehicle-side connector 40 . A part of the outer surface of the vehicle-side connector 40 (here, the surface on the rear side of the alarm device 100) may be provided with an air passage forming recess 46 extending in the insertion direction as shown in FIG. An insertion-side distal end portion of the air passage forming recess 46 communicates with a housing inner space 19, which will be described later. As a result, the internal space (vent hole 16) and the external space (opening 18A) of the alarm body 10 are ventilated by the alarm device side connector 18 and the vehicle side connector 40, and foreign substances such as water and dust are prevented from entering. This is advantageous in that it facilitates the formation of the air passage 50 for the purpose.

In this embodiment, since the connector housing 18B is provided with the insertion restricting portion 18E, the amount of insertion of the insertion side distal end portion 42 of the vehicle-side connector 40 is restricted at the position of the insertion restricting portion 18E. As a result, the insertion-side distal end portion 42 is not in close contact with the inner wall surface of the connector housing 18B, and the housing inner space 19 is formed as a spaced portion between the inner wall surface of the connector housing 18B. The housing inner space 19 directly communicates with the vent hole 16 and the external communication hole 18D.

When the vehicle-side connector 40 is inserted to the insertion restricting portion 18E of the connector housing 18B, the spring-like electrode 44 embedded in the insertion-side distal end portion 42 sandwiches the flat plate terminal 34, and the alarm device 100 and the vehicle-side connector 40 (vehicle (battery mounted on the device) is electrically connected. At the same time, the connector housing 18</b>B and the vehicle-side connector 40 form an air passage 50 communicating with the housing inner space 19 . Air in the external space is taken into the ventilation path 50 from the opening 18A, which is the end of the ventilation path 50 on the external space side, and is taken into the internal space of the alarm main body 10 via the housing inner space 19 and the ventilation hole 16. It will be. The intake of air into the internal space of the alarm main body 10 is performed by a suction effect due to reduced pressure caused by vibration of the diaphragm in the internal space of the alarm main body 10 .

As described above, in this embodiment, since the external communication hole 18D is provided in alignment with the position of the housing inner space 19, the opening 18A, which is the starting end of the air passage 50, and the terminal end. The straw-like pipe state (airtight state) of the air passage 50 between the air hole 16 and the air hole 16 is destroyed. That is, since the air passage 50 is like a straw with a hole in the middle of the extension direction, heavy foreign matter such as sand and dust entering the air passage 50 from the opening 18A is removed from the air passage 16. It is not sucked by the suction force from the air passage 50 and stays in the vicinity of the opening 18A of the air passage 50. As shown in FIG. On the other hand, since the air in the external space is light, it is sucked into the housing inner space 19 through the opening 18A of the air passage 50 and the external communication hole 18D by the suction force from the ventilation hole 16, and the alarm is emitted from the ventilation hole 16. It will be supplied to the internal space of the main body 10 .

Further, the notch portion 18</b>C described above extends in the insertion direction of the vehicle-side connector 40 at a position directly above the air passage forming recess portion 46 . Thereby, the contact area between the alarm-side connector 18 and the vehicle-side connector 40 forming the air passage 50 can be reduced. In other words, even if water enters from the opening 18A side of the air passage 50, it is possible to more reliably prevent the occurrence of water absorption phenomenon (capillary phenomenon) due to surface tension in the air passage 50. It is possible to reliably operate the alarm device 100 even in stormy weather.

Thus, according to the configuration of the alarm device 100 in this embodiment, ventilation between the internal space and the external space of the alarm device main body 10 can be ensured by the ventilation hole 16 and the ventilation path 50 . When the alarm device 100 operates, the internal space of the alarm device body 10 and the air passage 50 are reduced in pressure more than the external space. Heavy objects such as water and dust can be prevented from being sucked. Therefore, it is possible to provide the alarm device 100 that prevents foreign matter from entering the internal space of the alarm device body 10 and operates reliably regardless of the external environment such as stormy weather or the state of attachment to the vehicle. be.

Although the alarm device 100 according to the present invention has been described in detail above based on this embodiment, the present invention is not limited to the embodiment shown above. For example, in the present embodiment, the alarm device 100 is described as a safety component for vehicles, but the alarm device 100 according to the present invention is not limited to vehicles, and can be applied to ships and the like. be. Also, in this embodiment, the spiral alarm device 100 has been described, but the present invention can also be applied to flat alarm devices and other types of alarm device 100 .

Further, in this embodiment, the external communication hole 18D communicating with the housing inner space 19 is provided at the side position of the connector housing 18B, but it can be provided at a position other than the side position of the connector housing 18B. The arrangement position of the external communication hole 18D in the connector housing 18B can be appropriately changed according to the mounting state of the alarm device 100 to the vehicle.

Furthermore, the external communication hole 18D can also be drilled in a state of being inclined with respect to the outer surface of the connector housing 18B. By adopting the oblique external communication hole 18D, it is possible to more reliably prevent foreign matter from entering the housing inner space 19 through the external communication hole 18D.

In this embodiment, the connector housing 18B is provided with a notch portion 18C along the air passage forming recess 46 at a position directly above the air passage forming recess 46, so that the contact area between the connector housing 18B and the vehicle-side connector 40 is reduced. Although the form of reducing the surface tension when water enters the air passage 50 has been described, the present invention is not limited to this form. The notch portion 18C does not have to be positioned directly above the air passage forming recess portion 46 . Also, the arrangement of the notch 18C in the connector housing 18B can be omitted.

Further, if the arrangement of the air passage forming recess 46 is omitted, the cross-sectional shape in the direction orthogonal to the connecting direction of the connecting portion between the alarm-side connector 18 and the vehicle-side connector 40 can be made into a rectangular shape without unevenness. can do. By adopting such a configuration, the surface tension between the alarm-side connector 18, the vehicle-side connector 40, and water can be reduced when water enters the connection portion between the alarm-side connector 18 and the vehicle-side connector 40. can do. That is, it is possible to easily discharge water that has entered the connecting portion between the alarm-side connector 18 and the vehicle-side connector 40 to the outside space by the action of gravity.

Moreover, it is also possible to employ a form in which the modified examples and the like described in the present embodiment are appropriately combined.

10 alarm body,
12 sound path, 14 sound emitting part, 16 ventilation hole,
18 alarm side connector,
18A opening, 18B connector housing, 18C notch, 18D external communication hole, 18E insertion restricting portion,
19 housing space,
20 vehicle mounting bracket,
30 current-carrying terminals,
32 rivet, 33 rivet insertion hole, 34 flat plate terminal,
40 vehicle side connector,
42 insertion side tip, 44 spring-like electrode, 46 recess for forming air passage,
50 air passages,
100 alarm

Claims (6)

A vent hole for ventilation is formed between the internal space and the external space of the alarm device body, and the alarm device is electrically connected by connecting an alarm device side connector and a vehicle side connector provided in the alarm device body. hand,
The alarm device-side connector has a bag-like connector housing into which the vehicle-side connector is inserted through an opening,
By inserting the vehicle-side connector into the connector housing, an air passage is formed in the connector housing for communicating the air hole and the opening,
An alarm, wherein the air passage communicates with the external space in the middle of the air passage through an external communication hole drilled in the connector housing. The connector housing is formed with a separation portion between an insertion-side tip portion of the vehicle-side connector inserted into the connector housing,
2. The alarm device according to claim 1, wherein said external communication hole is formed at said spaced portion. 3. The alarm device according to claim 1, wherein said external communication hole is formed in a side surface of said alarm device side connector. The alarm according to any one of claims 1 to 3, wherein the opening of the connector housing has a notch extending in the direction of insertion of the vehicle-side connector. vessel. 5. An alarm according to claim 4, wherein said notch is formed directly above said ventilation path. 6. The alarm device-side connector and the vehicle-side connector are formed in a rectangular cross-sectional shape without irregularities in a cross-sectional shape in a direction perpendicular to the connecting direction. The alarm device described in .

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