JP6709403B2 - Crime prevention buzzer - Google Patents

Description

The present invention relates to a crime prevention buzzer having waterproof performance.

A child with a security buzzer may get wet due to unexpected flooding due to rain or rain when going to or from school. If it breaks down due to this water getting wet, it will not work in an emergency and will not be useful as a security buzzer. Therefore, a crime prevention buzzer having waterproof performance is desired. As such a waterproof crime prevention buzzer, for example, as shown in Patent Document 1, a portable crime prevention buzzer that achieves life waterproofing performance is known. In this portable crime prevention buzzer, a buzzer body is made waterproof by connecting a sealing member between an upper case and a lower case and connecting the upper case and the lower case with four screws.

Japanese Patent No. 4206411

In the security buzzer disclosed in Patent Document 1, since the alarm sound is generated by pulling out the switch pin, the switch pin may be lost, or the switch pin may be caught unexpectedly and malfunction (ring). Further, in order to pull out the switch pin, it has a switch hole for mounting the switch pin, a member which operates in this hole for detecting the pulling out of the switch pin, and the like. In order to exert sufficient waterproof performance with this type of security buzzer, the structure becomes complicated due to the switch holes and the operating members. In addition, this type of security buzzer has a waterproof performance equivalent to a waterproof grade 3 (rainproof type) in Japanese Industrial Standard JIS C0920:2003 (IEC 60529:2001), that is, a waterproof performance equivalent to daily life waterproofing. Therefore, if a child acts actively without worrying about the security buzzer, for example, if the security buzzer is submerged in water, the sealing member that is sandwiched may not have sufficient waterproof performance, and water may enter the interior and interfere with the function. is there.

It is an object of the present application to provide a crime prevention buzzer having a simple structure and capable of maintaining waterproof performance even when subjected to active action, and having waterproof performance equivalent to a waterproof class of 7 grade.

In view of the above problems, the crime prevention buzzer of the present invention is housed in an upper case that opens downward and has sidewalls around it, a lower case that opens upward and has sidewalls around it, and these upper and lower cases. A waterproof member that forms a watertight structure, and an operation unit that is operated by pushing. The watertight structure of the waterproof member is provided at the tip of the side wall of the upper case and the side wall of the lower case. A packing part to be sandwiched, a peripheral wall part in close contact with the outer surfaces of the side wall of the upper case and the side wall of the lower case, and an inner wall part in close contact with the inner surfaces of the side wall of the upper case and the side wall of the lower case. And

In addition to the above-mentioned structure, the upper case has a screw receiving hole inside, the lower case has a communicating hole at a position communicating with the screw receiving hole, and the screw receiving hole and the screw screwed into the communicating hole. The upper case and the lower case are fixed by means of, and an O-ring may be arranged between the screw hole forming wall forming the screw receiving hole and the communication hole forming wall forming the communication hole. preferable.

In addition to the above-described configuration, it is preferable that the operation portion of the speaker is arranged on the side wall of the upper case and/or the lower case, and the peripheral wall portion of the waterproof member covers the switch.

In addition to the above-described configuration, it is preferable that the operation portion of the speaker is formed on one side wall and a side wall of a surface facing the one side wall.

Further, in addition to the above-described configuration, the upper case has a sound guide hole for guiding the sound of the speaker to the outside in the ceiling part, and a lid for covering the sound guide hole from above, and between the lid and the ceiling part. And a space member that forms a space, the speaker covers the lower side of the sound guide hole, and the entire outer peripheral edge of the upper surface of the speaker is adhesively fixed around the sound guide hole of the ceiling portion.

In addition to the above-mentioned configuration, a holding member arranged on both sides of the bottom surface of the lower case, the holding member extending outward and downward from the front side and the rear side of the bottom surface of the lower case, and in a plan view. It is preferable that it is a substantially U-shaped body in which the extended portions are connected outward from both sides of the bottom surface.

Further, in addition to the above-described structure, a belt that is inserted through the holding member has a locking portion at one end of the belt and a plurality of locked portions at the other end of the belt in the longitudinal direction of the belt. It is preferably arranged along.

According to the first aspect of the present invention, the watertight structure is simplified by removing the pull-out pin and the like and using it as the operation portion for the pushing operation, and the waterproof member including the packing portion, the peripheral wall portion, and the inner wall portion. Can be formed. In addition, the contact area between the waterproof member and the upper and lower cases can be widened to maintain the waterproof performance even under active activity, and the waterproof performance is equivalent to waterproof class 7 (immersion resistant). It is possible to provide a crime prevention buzzer equipped with.

Further, according to the invention described in claim 2, a watertight structure is formed around the screw receiving hole and the communication hole while responding to the change in the vertical dimension caused by the compression (sandwiching) of the packing portion by the compressive deformation of the O-ring. You can

According to the third aspect of the invention, in addition to the watertight structure of the case body, the watertight structure of the switch related to the operation can be simply formed.

In addition, according to the invention described in claim 4, by having two operation parts, it is possible to prevent an unexpected malfunction (sound) caused by a child's action or the like rather than a case where the speaker is operated by the operation of one operation part. it can.

Further, according to the invention described in claim 5, it is possible to prevent the intrusion of water into the inside of the speaker, while keeping the sound of the speaker stable and capable of being emitted to the outside.

Further, according to the invention described in claims 6 and 7, the belt can be inserted into the crime prevention buzzer and the loop diameter thereof can be adjusted. In addition to the state in which the belt is wrapped around a thin object such as a shoulder strap of a school bag, a body such as an arm or a thick one It is possible to increase the number of applications such as the state of being wrapped around an object. Furthermore, by directly wrapping it around the body such as the arm, the child can wear it even when he/she does not have the school bag to inform him of the danger.

It is a perspective view showing an example of a crime prevention buzzer concerning an embodiment of the present invention. It is a rear view of the security buzzer of FIG. It is a bottom view of the security buzzer of FIG. It is a side view of the security buzzer of FIG. It is the sectional view on the AA line of the crime prevention buzzer of FIG. It is the BB sectional view taken on the line of the security buzzer of FIG. It is CC sectional view taken on the line of the security buzzer of FIG. FIG. 3 is a rear view of the vicinity of the second holding portion of the security buzzer of FIG. 2, where (a) is a belt state suitable for a thin belt and (b) is a belt state suitable for a thick belt. It is a perspective view of a belt attached to a security buzzer.

Embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the upper and lower directions of the upper case and the lower case and the front and rear directions are for convenience of description, and do not specify or limit the upper and lower or front and rear of the usage state.

As shown in FIGS. 1 to 4, the security buzzer 1 is composed of an upper case 2 that opens downward, a lower case 3 that opens upward, and a waterproof member 4 that is in close contact with the side surface thereof. As will be described later, the waterproof member 4 has a waterproof performance (so-called complete waterproof) equivalent to a waterproof class 7 grade (immersion resistant type) according to Japanese Industrial Standard JIS C0920:2003 (IEC 60529:2001). Button type operation parts 5 and 5 are arranged on both sides of the central side surface of the crime prevention buzzer 1, and the operation parts 5 and 5 are also covered with the waterproof member 4. Inside the case consisting of the upper case 2 and the lower case 3, a disk-shaped speaker 50, two switches 51, 51, a substrate 52, a storage box 6 including a battery box 53, etc. are arranged (see FIG. 5 to FIG. 5). 7), and by operating the operation units 5 and 5 (by pushing a button), a buzzer sound for crime prevention is emitted from the speaker 50.

As shown in FIGS. 1 to 4, in a state where the upper case 2 and the lower case 3 are joined to each other to form a single case, it is a gourd-shaped body having a depressed center in a plan view, and the operation portion 5 is provided in the depressed portion. 5 are arranged. In the present embodiment, the buzzer sound is emitted by operating both of the two operation units 5, 5. This is to prevent malfunction, and as another form, one operation unit 5 may be used instead of two.

As shown in FIG. 6, the upper case 2 includes a gourd-shaped ceiling portion 11 and an annular side wall 12 extending downward from the entire peripheral edge of the ceiling portion 11. The lower case 3 includes a bottom portion 23 and an annular side wall 24 that extends upward from the entire peripheral edge of the bottom portion 23. The side wall 12 of the upper case 2 and the side wall 24 of the lower case 3 are vertically opposed to each other with a predetermined gap therebetween in a single case.

At the tip (lower end) of the side wall 12 of the upper case 2, there is a first protrusion 21 protruding at the center position in the thickness direction. The first protrusion 21 is formed over the entire circumference of the side wall 12. Similarly, the side wall 24 of the lower case 3 has a second protrusion 25 at the center position in the thickness direction of its tip (upper end). Similarly, the first protrusion 21 and the second protrusion 25 are formed over the entire circumference of the side wall 12 of the upper case 2 and the side wall 24 of the lower case 3, and face each other.

As shown in FIG. 2, the crime prevention buzzer 1 has a first holding portion 19 formed on the side wall 12 of the upper case 2 so that it can be attached to a bag or the like via a hook or the like. As shown in FIG. 5, a portion of the side wall 12 of the upper case 2 where the first holding portion 19 is provided projects downward from other portions, and a tip (lower end) is located below the first holding portion 19. To do.

As shown in FIG. 6, the waterproof member 4 is arranged at a joint portion (a facing portion) between the side wall 12 of the upper case 2 and the side wall 24 of the lower case 3. The waterproof member 4 is made of a waterproof material such as silicone or elastomer. The waterproof member 4 is in close contact with the entire side surface of the case including the side wall 12 of the upper case 2 and the side wall 24 of the lower case 3, and also covers the entire side surface of the case to reduce the impact.

The waterproof member 4 includes a packing portion 31, a peripheral wall portion 32, and an inner wall portion 33, and the positional relationship among them is a substantially H-shaped cross section. The packing portion 31 is a portion sandwiched between the tip end of the side wall 12 of the upper case 2 and the tip end of the side wall 24 of the lower case 3, and the first protrusion 21 and the second protrusion 25 ensure high watertightness. ing.

The peripheral wall portion 32 is in close contact with the outer surfaces of the side wall 12 of the upper case 2 and the side wall 24 of the lower case 3. This close contact means that they are firmly in contact with each other, prevent water from entering from the outside, and improve water tightness. Further, the inner wall portion 33 is in close contact with the inner surfaces of the side wall 12 of the upper case 2 and the side wall 24 of the lower case 3, and has an effect of further enhancing watertightness.

The security buzzer 1 exhibits high waterproof performance by being sandwiched between the upper case 2 and the lower case 3 via the waterproof member 4. Further, even if water enters the upper and lower end portions of the packing portion 31, the intrusion of water can be suppressed by the first protrusion 21 and the second protrusion 25. The packing portion 31 may have grooves corresponding to the first protrusion 21 and the second protrusion 25. By providing the packing portion 31 with a groove into which the first protrusion 21 and the second protrusion 25 are fitted, the packing portion 31 can be positioned and attached to the side wall 12 of the upper case 2 and the side wall 24 of the lower case 3. ..

The peripheral wall portion 32 is integrally formed over the entire circumference of the side surface of the case (entire outer circumferences of the side walls 12 and 24). It is preferable that the outer surface of the peripheral wall portion 32 has unevenness for preventing slippage, and in this example, as shown in FIG. 1, a plurality of dimples 37 arranged at equal intervals are provided at a plurality of positions at predetermined intervals.

In addition, the peripheral wall portion 32 of the present embodiment is in close contact with the entire side surface of the case and extends over the entire circumference thereof, and is also provided between the ceiling portion 11 and the side wall 12 of the upper case 2 and the bottom portion 23 of the lower case 3. There are peripheral wall extensions 36, 36 that cover the curved portion between the side walls 24. The peripheral wall extension portions 36, 36 can provide the security buzzer 1 having higher watertightness.

As shown in FIG. 7, in the operation parts 5 and 5, the waterproof member 4 is arranged so that the inner wall part 33 contacts the switches 51 and 51 inside. In the vicinity of the operation parts 5 and 5, the end of the side wall 12 of the upper case 2 and the end of the side wall 24 of the lower case 3 are opened so as to be widely formed, and the packing part 31 is formed large. As a result, the operation portions 5 and 5 can be pushed by the surface to ensure the push, and the switches 51 and 51 are covered with the waterproof member 4 so that higher water tightness can be maintained.

Further, as shown in FIG. 1, an annular convex portion 38 that surrounds the periphery of the operation portion 5 is provided as a first mark on the outer surface of the peripheral wall portion 32. The annular convex portion 38 is a circular ring having a large diameter and being concentric with the operating portion 5, and the operating portion 5 and the annular convex portion 38 project outward from the peripheral wall portion 32. Further, a plurality of convex portions 39 arranged at equal intervals are provided as second marks around the portion of the peripheral wall extension portion 36 covering the upper case 3 side that is located above the operation portion 5. In this embodiment, when both operation parts 5 and 5 are pressed simultaneously, the operation is performed (the speaker 50 is turned on), and when they are pressed again, the operation is stopped (the speaker 50 is turned off).

The crime prevention buzzer 1 can prevent the operation unit 5 from being lost by using the operation unit 5 by pushing operation, and can easily make the operation unit 5 and the surroundings have a simple watertight structure as compared with a case where a pin is pulled out. Further, since the waterproof member 4 also serves as the operation portion 5, the watertight structure of the operation portion 5 is made simpler and easier. Since the operation of the speaker 50 is switched by operating the two operation units 5 and 5, it is possible to prevent an unexpected malfunction (sound) caused by a child's action or the like rather than the operation of the speaker by one operation unit. You can

The fixing of the upper case 2 and the lower case 3 and the waterproof structure of this fixed portion will be described with reference to FIG. The upper case 2 includes a plurality of screw receiving holes 27 protruding downward (inside) from the ceiling 11. The screw receiving hole 27 is formed by a screw receiving hole forming wall 27a. Similarly, the lower case 3 is provided with a communication hole 28 at positions vertically aligned with the screw receiving hole 27 of the bottom portion 23, and the communication hole 28 is formed by a communication hole forming wall 28a. The upper case 2 and the lower case 3 are fixed by screwing in screws 29. A concentric O-ring 9 is arranged between the screw receiving hole forming wall 27a and the communication hole forming wall 28a and is sandwiched therebetween. The O-ring 9 is made of a waterproof material such as silicone or elastomer. The communication hole forming wall 28a of this embodiment has portions projecting from each other so that the screw heads of the screws 29 can be arranged not at the portions where the O-rings 9 are arranged but at the opposite portions.

In the security buzzer 1, by arranging the concentric O-ring 9 between the screw receiving hole forming wall 27a and the communication hole forming wall 28a, the O-ring 9 changes in the vertical dimension caused by the compression (sandwiching) of the packing portion 31. A watertight structure is formed around the screw receiving hole 27 and the communication hole 28 while being accommodated by the compressive deformation.

The internal structure of the security buzzer 1 will be described. The ceiling 11 of the upper case 2 has a circular upper recess 14, an upper protrusion 15 concentric with the upper recess 14 and a small diameter, and a circular sound guiding hole 13 concentric with the upper protrusion 15 and small in diameter. The sound of the speaker 50 (buzzer sound) is led to the outside through the sound guide hole 13.

In the center of the upper recess 14, a circular convex portion 22 that is concentric with the sound guide hole 13 and has a large diameter projects upward, and above the upper recess 14, a lid 8 that covers the sound guide hole 13 from above is provided. The space member 7 that is attached and forms a space between the lid 8 and the ceiling portion 11 is attached around the convex portion 22. Further, as shown in FIGS. 5 and 6, the upper recess 14 has a plurality of protrusions 22 a protruding from the protrusion 22 to the outer periphery to position and hold the space member 7, and a plurality of insertion holes 16 to position and hold the lid 8. Have. In this example, the three protrusions 22 a are arranged on the outer periphery of the convex portion 22 at equal intervals in the circumferential direction concentric with the sound guide hole 13, and the three insertion holes 16 are provided at equal intervals in the circumferential direction concentric with the sound guide hole 13. It is arranged at a position on the outer periphery of the protruding portion 22a and at a position displaced from the protruding portion 22a in the circumferential direction.

The space member 7 is made of a waterproof material such as silicone or elastomer. The space member 7 includes a disk portion 40 having a through hole 42 concentric with the sound guide hole 13, and a wall portion 41 rising upward from the outer peripheral end of the disk portion 40 on the outer periphery of the through hole 42. The through hole 42 has a shape that fits into the convex portion 22 and the protruding portion 22a, and the wall portion 41 has a groove 43 that opens downward. The space member 7 is attached to the upper case 2 while being positioned and held in the upper recess 14 by fitting the through hole 42 into the convex portion 22 and the upper projection 15 into the groove 43. Further, the disc portion 40 has a through hole 48 at a position overlapping with the insertion hole 16, and the through hole 48 is located on the inner periphery of the wall portion 41.

The lid 8 has a circular top plate 44 that covers the sound guiding hole 13 from above, an annular wall 46 that projects downward along the entire outer peripheral edge of the top plate 44, and a mounting that projects downward from the lower end of the annular wall 46. It is composed of a portion 45 and a plurality of legs 47 protruding from the top plate 44 below the annular wall 46 and contacting the convex portion 22. The feet 47 are arranged at a predetermined interval in the circumferential direction of the top plate 44, and the lid 8 forms a sound guide gap between the annular wall 46 and the disk part 40 and the sound guide hole 13 (projection 22) by these feet 47. Has been positioned.

Three attachment parts 45 are arranged at equal intervals in the circumferential direction of the annular wall 46, and have a claw 45a at the lower end. The mounting portion 45 penetrates the through hole 48 and the insertion hole 16 and locks the claw 45 a to the inner surface (lower surface) of the ceiling portion 11 while being held in a watertight state by the disk portion 40. That is, the lid 8 is fixed to the upper case 2 with the space member 7 enhancing the adhesion.

The ceiling portion 11 has a ring-shaped lower projection 17 that is concentric with the sound guide hole 13 and has a large diameter, and projects downward. The lower protrusion 17 has an annular step portion 18 on the inner periphery of the lower end thereof, and the entire upper surface outer edge 50a of the disk-shaped speaker 50 (diaphragm) is fixedly adhered to the step portion 18.

The security buzzer 1 forms a sound-conducting gap between the speaker 50 and the sound guide hole 13 above and below to cover the lower part of the sound guide hole 13 with the speaker 50, and between the upper surface of the speaker 50 and the lower protrusion 17. With a watertight structure, the sound of the speaker 50 is stably held so that it can be released to the outside, and the inside of the speaker 50 is prevented from being flooded.

As shown in FIG. 3, the lower case 3 has two second holding portions 55, 55 (holding members) on the bottom portion 23. The second holding portions 55, 55 extend outward from predetermined positions on the front side and the rear side of the bottom portion 23. Specifically, the screw receiving holes 27, 27 are extended outward and slightly downward, and are connected to each other to form a substantially U-shape. This connection is made at a position outside the lower case 3 in a front view. In the present embodiment, since there are recesses on both sides and the operation portions 5 and 5 are arranged at the positions, the operation portions 5 and 5 are located outside the operation portions 5 and 5, and are in a state of being connected on a slightly lower side.

A belt 56 that passes between the second holding portions 55, 55 and the lower case 3 is shown. As shown in FIGS. 8 and 9, the belt 56 is in the form of a belt, and has the locking portion 60 arranged on one end side of one surface and the first locked portion 58 on the other end side of the back surface. There is a second locked portion 59 which is arranged side by side on the locking portion 60 side with a folded-back portion 57 spaced apart from the first locked portion 58 by a predetermined distance. The first locked portion 58, the second locked portion 59, and the locking portion 60 in this embodiment are surface fasteners and can be freely attached and detached. The second holding portions 55, 55 are arranged so as to extend outward and downward from the lower case 3, and can also be used as a base leg of the security buzzer 1 when the belt 56 described later is not inserted. ..

As shown in FIG. 8, the belt 56 is inserted between the second holding portions 55, 55 and the lower case 3 to form the locking portion 60 and the first locked portion 58 or the second locked portion 59. The belt 56 can be fixed in a loop by locking the. That is, as shown in FIG. 8A, the belt 56 is inserted through the second holding portions 55, 55 and folded back at the folding portion 57 between the first locked portion 58 and the second locked portion 59. Then, the locking portion 60 is locked to the second locked portion 59 to form a loop. In this case, the loop diameter of the loop formed by the belt 56 is relatively small, and the belt 56 can be attached to the user's bag or school bag. Further, as shown in FIG. 8B, a relatively large loop can be formed by locking the locking portion 60 to the first locked portion 58 without folding the belt 56 at the folding portion 57. It can be attached to the user's arm like a wristwatch.

The crime prevention buzzer 1 has a narrow loop state suitable for wrapping around a thin thing such as a shoulder strap of a school bag (locking by the second engaged portion 59) and a wide loop state suitable for wrapping around a thick object such as an arm. It is possible to selectively switch the mounting application to (locking by the first locked portion 58) or the like. Further, since the first locked portion 58 and the second locked portion 59 are separated from each other, the locking portion 60 can be attached to the second locked portion 59 by folding back at the folding portion 57 in between. However, it can be easily wrapped around a shoulder strap and the like, and the attachment state can be switched between the arm and the shoulder strap. Furthermore, by directly wrapping it around the body such as the arm, the child can wear it even when he/she does not have the school bag to inform him of the danger.

DESCRIPTION OF SYMBOLS 1... Security buzzer, 2... Upper case, 3... Lower case, 4... Waterproof member, 5... Operation part, 6... Storage item, 7... Space member, 8... Lid, 9... O ring, 11... Ceiling part, 12 , 24... Side wall, 13... Sound guide hole, 23... Bottom part, 27... Screw receiving hole, 27a... Screw receiving hole forming wall, 28... Communication hole, 28a... Communication hole forming wall, 29... Screw, 31... Packing part, 32... Peripheral wall portion, 33... Inner wall portion, 50... Speaker, 50a... Upper surface outer edge, 51... Switch, 55... Second holding portion (holding member), 56... Belt, 58... First locked portion, 59... 2 Locked part, 60... Locking part.

Claims (7)

An upper case that opens downward and has side walls around it, a lower case that opens upward and has side walls around it, and a storage object including a speaker that is housed in these upper and lower cases, and a watertight structure are formed. Consisting of a waterproof member and an operating section that is operated by pushing,
The watertight structure of the waterproof member includes a packing portion sandwiched between the tip ends of the side wall of the upper case and the side wall of the lower case, a peripheral wall portion in close contact with outer surfaces of the side wall of the upper case and the side wall of the lower case, A security buzzer comprising a side wall of the case and an inner wall portion in close contact with the inner surface of the side wall of the lower case. The upper case has a screw receiving hole inside, the lower case has a communicating hole at a position communicating with the screw receiving hole, and the upper case and the lower case are formed by the screw receiving hole and a screw screwed into the communicating hole. To fix and
The crime prevention buzzer according to claim 1, wherein an O-ring is arranged between a screw hole forming wall forming the screw receiving hole and a communication hole forming wall forming the communication hole. The operation part of the speaker is arranged on the side wall of the upper case and/or the lower case,
The security buzzer according to claim 1 or 2, wherein a peripheral wall portion of the waterproof member covers the switch. The security buzzer according to claim 3, wherein the operation portion of the speaker is formed on one side wall and a side wall of a surface facing the one side wall. The upper case has a sound guiding hole in the ceiling for guiding the sound of the speaker to the outside,
A lid that covers the upper side of the sound guide hole; and a space member that forms a space between the lid and the ceiling portion,
The speaker covers the lower side of the sound guide hole, and the entire outer peripheral edge of the upper surface of the speaker is adhesively fixed around the sound guide hole of the ceiling portion. The security buzzer described in. A holding member arranged on both sides of the bottom surface of the lower case,
The holding member is a substantially U-shaped body that extends outward and downward from the front side and the rear side of the bottom surface of the lower case, and connects the extended portions outward from both sides of the bottom surface in plan view. The security buzzer according to claim 1, 2, 3, 4, or 5. A belt that passes through the holding member,
7. The security buzzer according to claim 6, wherein a locking portion is arranged at one end of the belt, and a plurality of locked portions are arranged at the other end of the belt along the longitudinal direction of the belt. ..

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