JP5293000B2 - Fall detection device - Google Patents

Abstract

The present invention provides a turnover detecting device, a vibration control unit is used for inhibiting the vibration of a magnetic element under the state of arranging a concave container on thehorizontal surface, by arranging a vibration inhibiting unit at the central lowest position of the inner part of the concave container, thereby the vibration of an inhibiting unit is inhibited by using the vibration inhibiting unit under a non-overturn state of a carrying equipment, thereby the vibration sound generated between the concave container and the magnetic element can be reduced, and thevibration sound generated by the magnetic element can be long term and stably inhibited by a simple structure.

Description

  The present invention relates to a fall detection device that detects a fall state of a device such as an electric product.

  In recent years, many general-use electrical products that handle liquids have been commercialized, such as water-related devices such as humidifiers and dehumidifiers, and devices that use liquid fuel such as petroleum fan heaters. In most cases, there are cases in which it is usually portable and not fixedly installed, so it may fall over due to carelessness in use or an external force such as an earthquake. If the device falls, the liquid to be handled may leak, and if the liquid to be handled leaks, if the device is energized and in operation, the electrical circuit may fail or ignite due to the liquid leaking into the device. If it leaks to the outside of the equipment, it may cause damage to the floor or furniture, or cause a fire. Safety measures to stop are important.

  Conventionally, as a method for detecting the falling state of this type of device, a tilt switch that detects a tilt of the device more than a certain level in a switch manner is generally known (for example, see Patent Document 1).

  The tilt switch will be described below with reference to FIG.

  A cylindrical recess 103 is provided at the tip of a substantially conical recess 102 inside the case 101 that forms the base of the tilt switch body, and a sphere 104 larger than the opening diameter of the cylindrical recess 103 is placed thereon, The sphere 104 is covered with a cover 105 so that the sphere 104 can freely roll on the substantially conical recess 102 from above, and a photo sensor 106 is provided on the bottom of the cylindrical recess 103. Here, the photosensor 106 is of a reflective type that projects light onto the object and detects the presence or absence of the object based on the presence or absence of reflection of light from the object. When the tilt switch of the embodiment configured in this manner is horizontal, the sphere 104 rolls into the depression 103 on the cylinder, and the photo sensor 106 detects that the reflected light from the sphere 104 is large, thereby indicating that it is horizontal. In the case of tilting, the sphere 104 rolls in the tilt direction from the depression 103 on the cylinder, and the photosensor 106 has little reflected light from the sphere 104 or cannot receive the reflected light. Since it becomes impossible to detect the state, the judgment of falling is carried out in this state.

Japanese Utility Model Publication No. 04-112436

  In such a conventional tilt switch, since the sphere 104 is a spherical shape that easily rolls, it is easy to jump over the hollow 103 on the cylinder due to an external impact other than a fall, and against external vibration. False detection was easy to occur.

  As a measure to reduce the occurrence of this erroneous detection, the sphere 104 is magnetized so as to have a magnetic flux that is the same as the direction of gravity and the shape of a quasi-elliptical sphere that is more difficult to roll and has a circular top view and is collapsed in the direction of gravity. As a magnetic flux element, this magnetic flux element is movably disposed inside a concave container having a funnel-shaped depression and an inner surface shape where the magnetic flux element contacts the inner surface at one point, and is sealed with a container lid. By detecting the magnetic flux of the child with the magnetic flux detection means arranged in the center bottom direction of the concave container, when the mounted device is tilted more than a certain degree, the magnetic flux element slides on the inner surface of the concave container, and the magnetic flux of the magnetic flux element is A method may be considered in which the magnetic flux detection means deviates from the magnetic flux detection range of the magnetic flux detection means and the magnetic flux detection means is in a non-detection state, and the device is judged to fall with this magnetic flux not being detected.

  However, in this method, when a magnetic source such as an open-type take-up magnetic pole induction motor that generates a weak alternating AC magnetic field that fluctuates periodically is mounted on the mounted device, the leakage AC magnetic field Magnetic flux fluctuations affect the magnetic flux, and weak attracting and repulsive forces periodically work with the magnetic force of the magnetic flux, so that the magnetic flux itself that is in contact with the inner surface of the concave container at one point finally Vibration noise may be generated between the concave container and the magnetic fluxon due to resonance vibration and rotation around the contact point, etc.In order to suppress the generation of this vibration noise, braking liquid is placed inside the concave container. However, the configuration is complicated because it is necessary to seal the braking liquid inside the concave container with a container lid, and the braking liquid leaks to the outside in long-term use, reducing the effect of suppressing vibrations. You There is a problem such as.

  The present invention solves such a conventional problem, and an object thereof is to provide a fall detection device having an effect of suppressing the generation of vibration sound of a magnetic fluxon that is more stable in the long term with a simple configuration. It is said.

  In order to achieve the above object, the fall detection device of the present invention has a circular shape in a top view and a gravitational force in a state where the concave container is arranged on a horizontal plane inside a concave container having a funnel-shaped space from the opening of the upper surface. Magnetic flux that has a quasi-elliptical sphere shape collapsed in the direction and is magnetized and magnetized so as to have a magnetic flux that is the same as the direction of gravity, and the magnetic force of this magnetic flux is arranged below the concave container In the configuration of the fall detection detected by the detection means, a vibration suppression means for suppressing the vibration of the magnetic flux element is arranged at the lowest central portion inside the concave container.

  By this means, in a normal installation state of the device, the vibration of the magnetic flux element is suppressed by the vibration suppressing means arranged at the center lowest part inside the concave container.

  Further, the vibration suppressing means is a concave portion having a diameter smaller than the top view diameter of the magnetic flux element so that a part of the magnetic flux element falls in a state where the concave container is disposed on the horizontal plane at the central lowermost portion inside the concave container. It is comprised by providing.

  By this means, a part of the magnetic flux falls into the concave portion provided at the lowest central portion inside the concave container in the normal installation state of the device.

The vibration suppression means is a Totsuryo the central lowermost portion of the interior of the concave container at least one set only by those configured to place to avoid the falling direction of the device the convex edge.

  By this means, when a fall occurs, the magnetic flux can hardly contact the convex ridge provided inside the concave container.

  Further, the position of the convex ridge is configured to be arranged in the direction of the side where the side surface of the device intersects the side surface.

  By this means, when a fall occurs, the magnetic flux element can hardly contact the convex ridge provided inside the concave container.

  According to the present invention, the vibration suppressing means arranged at the central lowest part inside the concave container will suppress the vibration of the magnetic flux element in the normal installation state of the device, and with a simple configuration for a longer period of time. It is possible to provide a fall detection device having an effect of stably reducing vibration noise generated between the concave container and the magnetic flux child.

1 is a front sectional view showing a configuration of a fall detection device according to Embodiment 1 of the present invention, and a partial cutaway view showing a configuration example of a device equipped with the same ((a) front view showing the configuration of the fall detection device). Sectional view in view, (b) Front view partially broken view showing an example of the configuration of equipment equipped with the device) Front perspective partial perspective view showing an example of the configuration of a device equipped with the same device Is a plan view showing the internal state of the concave container constituting the apparatus viewed from above An enlarged front sectional view of the central lowest part of the concave container showing the first embodiment of the vibration suppressing means of the apparatus and the assembly of the concave container showing the assembly configuration of the first embodiment of the vibration suppressing means of the apparatus Enlarged front sectional view of the central lowest part ((a) An enlarged front sectional view of the central lowest part of the concave container showing the first embodiment of the vibration suppressing means of the apparatus, (b) Vibration of the apparatus (Expanded front sectional view of the central lowermost portion of the concave container showing the assembly configuration of the first embodiment of the suppressing means) An enlarged front sectional view of the lowermost central portion of the concave container showing another form of the vibration suppressing means of the apparatus and the lowermost central part of the concave container showing the assembly configuration of another form of the vibration suppressing means of the apparatus (A) An enlarged front sectional view of the central lowest part of the concave container showing another form of the vibration suppressing means of the apparatus, (b) Another form of the vibration suppressing means of the apparatus (Expanded front sectional view of the lowermost central portion of the concave container showing the assembly structure) Enlarged front sectional view of the central lowest part of the concave container showing another form of the vibration suppressing means of the same device Enlarged front sectional view of the central lowest part of the concave container showing another form of the vibration suppressing means of the same device Enlarged front sectional view of the central lowest part of the concave container showing another form of the vibration suppressing means of the same device The top view which looked at the concave container which showed another form of the vibration suppression means of the apparatus from the upper direction Front perspective partial perspective view showing an example of the falling direction of equipment equipped with the device The top view which looked at the concave container which showed the 5th Example of another of the vibration suppression means of the apparatus from the upper direction Front view sectional drawing which shows the structure of this fall detection apparatus of the reference example 1 of this invention Front perspective partial perspective view showing an example of the configuration of a device equipped with the same device Front view sectional drawing which shows the structure of this fall detection apparatus of the reference example 2 of this invention Front perspective partial perspective view showing an example of the configuration of a device equipped with the same device Front sectional view showing the configuration of a conventional fall detection device

  According to the first aspect of the present invention, in a state in which the concave container is disposed on a horizontal plane inside the concave container having a funnel-like space recessed from the opening on the upper surface, the top view is circular and crushed in the direction of gravity. A magnetic flux magnet magnetized and magnetized so as to have a quasi-elliptical sphere shape and the same magnetic flux as the direction of gravity is arranged, and the magnetic force of this magnetic flux element is detected by a magnetic flux detection means arranged below the concave container. In the configuration of the fall detection, the vibration suppressing means for suppressing the vibration of the magnetic flux element is arranged at the lowest central part inside the concave container, and the magnetic flux element vibrates by the vibration suppressing means in the normal installation state of the device. Therefore, it is possible to reduce vibration noise generated between the concave container and the magnetic flux element, and to suppress the generation of stable vibration sound of the magnetic flux magnet for a longer period with a simple configuration.

  Further, the vibration suppressing means is a concave portion having a diameter smaller than the top view diameter of the magnetic flux element so that a part of the magnetic flux element falls in a state where the concave container is disposed on the horizontal plane at the central lowermost portion inside the concave container. In the normal installation state of the device, a part of the magnetic flux falls into the concave portion provided in the central lowest part inside the concave container, and the contact area with the magnetic flux and the concave portion increases. By suppressing the vibration of the magnetic fluxon due to the increase in the contact area, the vibration noise generated between the concave container and the magnetic flux can be reduced. It has the effect | action which can suppress generation | occurrence | production of a vibration sound.

  Further, the vibration suppressing means is configured by providing at least one convex ridge in contact with the magnetic flux at the lowest central portion inside the concave container, and the magnetic flux element is connected to the inner surface of the concave container when the device is not overturned. It is possible to reduce vibration noise generated between the concave container and the magnetic flux element by suppressing the vibration of the magnetic flux element due to the increase in the contact area because it comes into contact with at least two points with the convex ridge. It has the effect | action which can suppress generation | occurrence | production of the vibration sound of the magnetic flux child stabilized by the structure for a long term.

  In addition, in the configuration of the vibration suppressing means in which at least one convex ridge is provided at the central lowest part inside the concave container, the convex ridge is arranged avoiding the tipping direction of the device. Since it becomes difficult to contact the convex ridge provided inside the concave container, the movement of the magnetic flux is difficult to be obstructed.Therefore, it is possible to stabilize the magnetic flux in a long term with a simple configuration without deteriorating the fall detection performance. It has the effect | action which can suppress generation | occurrence | production of a vibration sound.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 to FIG. 11 are configuration diagrams of a fall detection device according to Embodiment 1 of the present invention.

  Here, FIG. 1 (a) is a front sectional view showing the configuration of the first embodiment of the fall detection device, and FIG. 1 (b) is a partial cutaway view showing a configuration example of a device on which the device is mounted. FIG. 2 is a partially transparent front perspective view showing an example of the configuration of a device equipped with the apparatus, FIG. 3 is a plan view showing an internal state of the concave container constituting the apparatus viewed from above, and FIG. FIG. 4A is an enlarged front sectional view of the central lowermost portion of the concave container showing a first embodiment of the vibration suppressing means of the apparatus, and FIG. 4B is a first embodiment of the vibration suppressing means of the apparatus. FIG. 5 (a) is an enlarged front sectional view of the central lowest part of the concave container showing the assembly configuration of FIG. 5, and FIG. 5 (a) is an enlarged view of the central lowest part of the concave container showing the second embodiment of the vibration suppressing means of the apparatus. FIG. 5B is a front sectional view, and FIG. 5B is an enlarged view of the central lowest part of the concave container showing the assembly configuration of the second embodiment of the vibration suppressing means of the apparatus. FIG. 6 is an enlarged front sectional view of the lowermost central portion of the concave container showing a third embodiment of the vibration suppressing means of the apparatus, and FIG. 7 is a fourth embodiment of the vibration suppressing means of the apparatus. FIG. 8 is an enlarged front cross-sectional view of the central lowest part of the concave container showing a fifth embodiment of the vibration suppressing means of the apparatus, FIG. 9 is a plan view showing the internal state of the concave container showing the fifth embodiment of the vibration suppressing means of the apparatus as viewed from above, and FIG. 10 shows an example of the falling direction of the equipment equipped with the apparatus. FIG. 11 is a plan view showing an internal state of the concave container showing the fifth embodiment of the vibration suppressing means of the apparatus as viewed from above.

  As shown in FIGS. 1 to 3, the fall detection device 1 (the range surrounded by the two-dot chain line in the figure) is built in the device body 2. And the structure is the flat circuit board 3 arrange | positioned so that it may become right-angled with respect to the gravitational direction in the normal installation state of the apparatus main body 2, ie, the lower surface side of this circuit board 3 And a funnel-shaped depression arranged in the center on a vertical axis from the center of the magnetic flux detection means 4 toward the upper surface side of the circuit board 3. A concave container 5 having 5A, a magnetic element 6 movably disposed inside the funnel-shaped depression 5A, and a central lowermost portion of the funnel-shaped depression 5A (a part surrounded by a one-dot chain line in the figure) And a vibration suppressing means 7 for suppressing the vibration of the magnetic flux element 6 and further covering the entire open space of the concave container 5 in a state where the magnetic flux element 6 is placed inside the concave container 5. A container that is fixed to the circuit board 3 with a lid. And a cover 8. Note that the funnel-shaped recess 5A has a shape that is recessed toward the center.

  Moreover, in the normal installation state of the apparatus, the concave container 5 is disposed on the upper surface side of the circuit board 3 and disposed on the horizontal plane.

  Note that the normal installation state indicates the attitude of installation or use of the device main body 2 recommended by the manufacturer in order to use the device correctly.

  Note that it is conceivable that the fall detection device 1 is mounted and used as a device for detecting a fall state in various devices. Here, as the device main body 2 to be mounted, the humidifying device shown in FIG. 2 is shown as an example, and the fall detection device 1 is provided on a circuit board 3 constituting a control circuit for controlling the operation of the humidifying device. Be placed.

  Further, in the humidifying device, an open type take-up magnetic pole type induction motor may be mounted as a blower fan driving motor, but an alternating magnetic field leaking from this motor may act on the magnetic flux element 6 and affect it. . That is, an alternating magnetic field acts on the magnetic flux element 6 to vibrate the magnetic flux element 6, and a contact sound is generated between the concave container 5 and the vibration. This vibration is called contact vibration.

  Further, the magnetic force fluctuation of the alternating magnetic field affects the magnetic flux element 6, and a weak attractive force or repulsive force periodically works with the magnetic force of the magnetic flux element 6, thereby making contact with the inner surface of the concave container 5 at one point. The magnetic flux element 6 that has reached the resonance vibration is rotated around the one point, and vibration noise is generated between the concave container 5 and the magnetic flux element 6. This vibration is called rotational vibration.

  In the present embodiment, the AC magnetic field that leaks will be described as an influence magnetic force, and the motor will be described as a magnetic force generation source 9.

  Here, the magnetic flux detection means 4 detects the presence or absence of magnetic flux in a non-contact manner. For example, a general surface mount type Hall IC 7 that detects the presence or absence of magnetic flux density and changes the state to an electric signal state is used. It is composed.

  Here, the magnetic flux element 6 has a circular side surface when viewed from above in a state in which the concave container 5 is arranged on a horizontal plane, that is, in a state in which the circuit board 3 is horizontally arranged in a steady installation state of the device body 2. When viewed from the direction, it is formed into a quasi-elliptical sphere shape that becomes an ellipse crushed in the direction of gravity, that is, a quasi-elliptical flat shape in the thickness direction. And it is movably arranged in the funnel-shaped dent 5A portion, and is magnetized so as to have a magnetic flux in the same direction as the direction of gravity in the steady installation state of the device main body 2 (a stable state not in the overturned state). A magnet is formed to a predetermined size. For example, a ferrite magnet with excellent corrosion resistance and a large coercive force that is difficult to demagnetize is the most suitable material. After being molded into a quasi-elliptical sphere and sintered, it is magnetized in the thickness direction by the magnetic flux of the electromagnet. And magnetized.

  Here, the concave container 5 and the container lid 8 are optimally formed of a material that does not magnetically affect the magnetic flux of the magnetic flux element 6 and the magnetic flux detected by the magnetic flux detection means 4. For example, ABS, PBT, etc. The resin material is molded and configured.

  Here, the lowermost part of the center of the funnel-shaped depression 5A is optimally shaped so as to reduce the frictional force so as not to prevent the movement of the magnetic flux element 6 as much as possible when the fall occurs in a state where it is in contact with the magnetic flux element 6. In order to reduce the frictional force by making point contact, the funnel-shaped depression 5A has a semispherical or semi-elliptical spherical curved surface in which the innermost shape of the lowermost central portion has a curvature larger than the curvature of the bottom surface of the magnetic flux element 6. It is said.

  Further, as shown in FIGS. 4 and 5, at the center lowest part of the funnel-shaped depression 5A, the vibration suppressing means 7 is elastic to the surface with which the magnetic flux element 6 contacts in the state where the concave container 5 is disposed on the horizontal plane. The body 10 is arranged and configured.

  The elastic body 10 is a material having a low hardness with respect to ABS, PBT, or the like, which is a constituent material of the concave container 5 so that the contact vibration of the magnetic flux element 6 can be sufficiently absorbed. Therefore, a material that increases the internal loss and absorbs the contact sound caused by the vibration of the magnetic flux element 6 and that is stable for a long period of time is suitable. For example, it is made of a silicon rubber material.

  Further, as shown in FIG. 4, the elastic body 10 is provided with an elastic body fixing recess 11 at the lowermost center of the funnel-shaped recess 5A as shown in FIG. 4, and the elastic body fixing recess 11 is indicated by an arrow on the figure. The elastic body 10 is inserted from the direction, that is, from above, and is fixed by forcible fitting or an adhesive. Further, as shown in FIG. 5, an elastic body fixing opening 12 is provided at the lowermost central portion of the funnel-shaped depression 5A, and a convex elastic body 10A is inserted into the elastic body fixing opening 12 from below and inserted. It is constituted by.

  Here, by making the surface of the elastic body 10 the same surface without projecting with respect to the lowermost central portion of the funnel-shaped depression 5A, the movement of the magnetic flux element 6 with respect to the inner surface of the concave container 5 at the time of falling is prevented. It is important that the surface of the elastic body 10 that is in contact with the magnetic flux element 6 does not interfere with the movement of the magnetic flux element 6, for example, polyethylene or polyethylene terephthalate having a thickness of about 1 μm to 100 μm. If the contact resistance is reduced by coating with a hard resin material, it is possible to further reduce the influence of the fall detection performance.

  Here, the range in which the elastic body 10 at the center lowermost part of the concave container 5 is arranged is arranged inside the funnel-shaped depression 5A so as not to hinder the movement of the magnetic flux element 6 with respect to the inner surface of the concave container 5 as much as possible. The range in which the magnetic flux element 6 contacts in the non-falling state at the center lowest part may be sufficient. For example, when the circular diameter is Φ5 mm when viewed from above the magnetic flux element 6, the range of Φ2 mm to Φ3 mm is suitable.

  According to the above configuration, at the time of non-falling, the magnetic flux element 6 is located at the lowermost central portion of the funnel-shaped recess 5A in the concave container 5 and makes point contact with the inner surface of the lowermost central portion of the funnel-shaped recess 5A. The funnel 6 is influenced by the magnetic force of the leakage AC magnetic field from the magnetic force generation source 9 and vibration or rotational motion is induced around the portion where the magnetic flux element 6 is in point contact with the inner surface of the funnel-shaped depression 5A. The vibration itself of the magnetic flux element 6 is reduced by the low hardness of the elastic body 10 arranged at the lowermost central portion of the hollow 5A and the buffering action of a large internal loss, and the generation of vibration noise is suppressed.

  Further, as shown in FIG. 6, the vibration suppressing means 7 has a diameter in a top view of the magnetic flux element 6 so that a part of the magnetic flux element 6 falls into the lowermost central portion of the funnel-shaped depression 5 </ b> A inside the concave container 5 when not falling. It can also be configured by providing the following recess 13.

  Here, the shape of the opening of the concave portion 13 when viewed from above is optimal so that the contact resistance can be increased by increasing the contact portion with the funnel-shaped depression 5A in a state where the magnetic flux element 6 is depressed. The diameter of the magnetic flux element 6 needs to be large enough not to become a resistance when the magnetic flux element 6 slides into the lowermost central part of the funnel-shaped depression 5A when not overturned. For example, when viewed from above the magnetic flux element 6 When the circle diameter is Φ5 mm, the range of Φ2 mm to Φ3 mm is suitable.

  Here, the opening of the concave portion 13 is set to such a depth that the magnetic flux element 6 comes into contact with the bottom surface of the concave portion 13 and the one-point contact state does not occur with the concave container 5 when the magnetic flux element 6 is depressed. For example, when the circular diameter is Φ5 mm when viewed from above the magnetic flux element 6 and the height dimension when viewed from the side surface is 3 mm, the hole diameter of the recess 13 is Φ3 mm. A hole depth of 0.4 mm or more is suitable.

  According to the above configuration, in a state where the magnetic flux element 6 is positioned at the central lowest part of the concave container 5 at the time of non-falling, a part of the magnetic flux element 6 falls into the concave part 13 arranged at the central lowest part of the concave container 5; The surface of the magnetic flux element 6 is in linear contact with the opening end of the concave portion 13, and a large contact resistance is generated between the magnetic flux element 6 and the concave container 5, and this contact resistance is applied to the magnetic flux element 6 from the magnetic force generation source 9. Even in the state where the magnetic force of the leakage AC magnetic field is affected, it is possible to prevent the occurrence of vibration without bringing the magnetic flux element 6 into the resonance state, and the generation of vibration sound caused by the rotational vibration or contact vibration of the magnetic flux element 6. Will be suppressed.

  Moreover, as shown in FIG. 7, the vibration suppression means 7 can also be comprised by making the convex part 14 protrude in the center lowest part of the funnel-shaped hollow 5A inside the concave container 5. As shown in FIG.

  Here, the convex portion 14 does not obstruct the movement of the magnetic flux element 6 that slides on the inner surface of the concave container 5 as much as possible when the fall occurs, and the magnetic flux element 6 at the time of the non-falling position is positioned at the lowermost central portion of the funnel-shaped depression 5A. In such a state, it is necessary to project the part of the magnetic flux element 6 so that it slightly floats at the contact portion with the magnetic flux element 6. For example, when viewed from above the magnetic flux element 6, the circle diameter is Φ5 mm and the lateral direction If the dimension in the height direction when viewed from 3 mm is 3 mm, a hemispherical shape with a radius of 0.2 mm to 0.3 mm is suitable.

According to the above configuration, in a state where the magnetic flux element 6 is located at the central lowest part of the concave container 5 when not falling, the magnetic flux element 6 has run on the convex part 14 protruding from the central lowest part of the concave container 5. The magnetic flux element 6 is held with respect to the concave container 5 at two points, that is, a contact portion with the convex portion 14 and a portion in contact with the concave container 5, and the magnetic flux with respect to the funnel-shaped depression 5 </ b> A in the concave container 5. by contact at two points of the child 6 by Jisokuko 6 and large contact resistance between the concave container 5 occurs, the magnetic force of the leakage AC field of the contact resistance from the magnetic force generating source 9 to Jisokuko 6 is affected Even in the state where the magnetic flux element 6 is present, the generation of the vibration sound based on the rotational vibration of the magnetic flux element 6 is suppressed by preventing the occurrence of vibration without bringing the magnetic flux element 6 into the resonance state.

  Further, as shown in FIGS. 8 and 9, the vibration suppressing means 7 has at least one convex ridge 15 in contact with the magnetic flux element at the central lowermost portion inside the concave container 5 (in the figure, as an example, the convex ridge 15 is It can also be configured by projecting three).

  Here, the convex ridge 15 does not obstruct the movement of the magnetic flux element 6 with respect to the inner surface of the concave container 5 as much as possible when the fall occurs, and the magnetic flux element 6 at the time of non-falling is in the lowermost central portion of the concave container 5. Needs to project in a radial ridge shape outward from the center of the concave container 5 so that at least one part of the magnetic flux element 6 and the convex edge 15 is in contact, for example, when viewed from above the magnetic flux element 6 If the diameter is Φ5mm and the height dimension when viewed from the side is 3mm, the shape of the ridgeline with a radial height of 0.2mm to 0.3mm projecting from the center to the outside of the concave container 5 is suitable. ing.

According to the above configuration, in the state where the magnetic flux element 6 is present at the lowest central portion of the concave container 5 when not overturned, the magnetic flux element 6 radiates from one point on the inner surface of the concave container 5 and from the lowermost central portion of the concave container 5. Is held in contact with a part of the ridge line of the convex ridge 15 projecting on the concave container 5, and the contact between the magnetic flux element 6 and the concave container 5 due to the contact with the concave container 5 at two or more points. by resistance occurs because the contact resistance to prevent the generation of vibrations without bring the Jisokuko 6 into resonance even in a state where the magnetic force is affecting the leakage AC magnetic field from the magnetic force generating source 9 to Jisokuko 6 In addition, the generation of vibration noise caused by rotational vibration and contact vibration of the magnetic flux element 6 is suppressed.

  In addition, as shown in FIG. 10, if the housing | casing of the apparatus main body 2 mounted, for example is a quadrangular prism shape, the fall direction of the apparatus main body 2 will be limited to substantially four directions. That is, it can be limited to the side surface direction of the housing as indicated by a thick arrow in the figure. When the fall direction of the device body 2 to be mounted can be limited in this way, the direction (the direction indicated by the thick arrow in the figure) that is the same as the fall direction of the device body 2 on the inner surface of the concave container 5 as shown in FIG. If the convex ridge 15 is arranged avoiding the above), it is possible to make it difficult for the magnetic flux element 6 to contact the convex ridge 15 when the magnetic flux element 6 slides in the falling direction on the inner surface of the concave container 5 when the fall occurs. The influence on the fall detection performance degradation based on the contact resistance of the magnetic flux element 6 with respect to the convex ridge 15 can be further reduced. In particular, the direction of the convex ridge can be easily avoided in the direction that is the same as the direction in which the device falls by being directed toward the side where the side faces intersect.

  In addition, in the description of the above embodiment, the concave container is disposed so as to be positioned on a horizontal plane in a normal installation state of the apparatus, thereby stabilizing the vibration of the magnetic flux element with a simple configuration for a longer period of time. The effect of suppressing the generation of sound can be realized by using a concave container, a magnetic flux element, and vibration control means having a simple shape.

  In the above description, the fall detection device 1 includes the circuit board 3 built in the equipment body 2 to be mounted, the magnetic flux detection means 4 disposed on the lower surface side of the circuit board 3, the concave container 5, and the magnetic flux. Although shown as a device composed of a child 6 and a container lid 8 in a composite manner, it is possible to make this component function as a single device part as a unit, and also in this single device part, vibration suppressing means 7 It goes without saying that there is no difference in the operational effect that can suppress the generation of the vibration sound of the magnetic flux.

  In the above description, the fall detection device 1 is configured as a flat circuit board 3 that is arranged so as to be perpendicular to the direction of gravity in the normal installation state of the device body 2, that is, substantially horizontally. However, even if the circuit board 3 is inclined or has a substantially vertical angle, it can function as a fall detection device if the shape of the concave container 5 and the arrangement angle of the magnetic flux detection means 4 are taken into consideration. Needless to say, there is no difference in the effect of suppressing the generation of the vibration sound of the magnetic flux magnet by providing the vibration suppressing means 7 even in the configuration other than the horizontal arrangement of the fall detection device 1. .

( Reference Example 1 )
12 and 13 are configuration diagrams of the fall detection device in Reference Example 1 of the present invention.

  It should be noted that the same function numbers are assigned to the same function configurations as those in the first embodiment, and detailed description after that is omitted.

Here, FIG. 12 is a front cross-sectional view showing the configuration of Reference Example 1 of the fall detection device, and FIG. 13 is a front perspective partial perspective view showing a configuration example of a device on which the device is mounted.

  As shown in FIG. 12, the magnetic force with respect to the magnetic flux element 6 is arrange | positioned by arrange | positioning the magnetic-shielding means 16 which interrupts | blocks magnetic flux between the magnetic force generation source 9 arrange | positioned in the same apparatus with the magnetic flux element 6 incorporated in the fall detection apparatus structure 1. FIG. The influence of the leakage AC magnetic field from the generation source 9 can also be reduced.

  Here, the magnetic-shielding means 16 is formed by vapor-depositing a soft magnetic metal material having a high magnetic permeability of iron or nickel and having a high magnetic permeability and a permalloy composition on a flat plate or resin film.

  Here, the magnetic-shielding means 16 is attached and fixed to the apparatus main body 2 with screws 17 as shown in the figure, for example.

  When the magnetic shielding means 16 is arranged at a short distance from the magnetic flux element 6, the magnetic attractive force acts between the magnetic flux element 6 as a magnet and the magnetic flux element 6 is disposed in the direction of the magnetic shielding means 16 on the inner surface of the concave container 5. When the overturn occurs, the magnetic flux element 6 hinders the sliding movement of the inner surface of the concave container 5, so that the distance between the magnetic flux element 6 and the magnetic shielding means 16 needs to be set at a distance where the magnetic attractive force can be almost ignored. For example, if the surface magnetic force of the magnetic flux element 6 is about 150 mT, it is desirable that the magnetic flux element 6 and the magnetic-shielding means 16 are arranged at least 13 mm apart.

  It should be noted that the magnetic shielding means 16 has an area and a soft magnetic metal material that can sufficiently reduce the magnetic force to such an extent that the magnetic flux 6 that affects the magnetic flux 6 generated from the magnetic force source 9 does not vibrate or rotate. It is necessary to adjust the thickness, and in actual use, it is determined by confirming the effect of reducing the influence magnetic force in the mounted device.

  According to the above configuration, even if there is a magnetic force generation source 9 that generates a magnetic force that affects the mounted device to vibrate the magnetic flux element 6, the magnetic-shielding means disposed between the magnetic force generation source 9 and the magnetic flux element 6. 16 can reduce the influence of the magnetic force from the magnetic force generation source 9 on the magnetic flux element 6, so that the direct influence of the magnetic force on the magnetic flux element 6 can reduce the vibration and rotation of the magnetic flux element 6. The generation of vibration noise caused by the rotational vibration and contact vibration of the magnetic flux element 6 is suppressed.

  In the above description, the fall detection device 1 includes the circuit board 3 built in the equipment body 2 to be mounted, the magnetic flux detection means 4 disposed on the lower surface side of the circuit board 3, the concave container 5, and the magnetic flux. Although shown as a device composed of a child 6 and a container lid 8 in a composite manner, it is also possible to make this component function as a single device part as a unit, and even in this single device part, a magnetic source 9 It goes without saying that there is no difference in the operational effect that can suppress the generation of the vibration sound of the magnetic flux by disposing the magnetic shielding means 16 between them.

  In the above description, the fall detection device 1 is configured as a flat circuit board 3 that is arranged so as to be perpendicular to the direction of gravity in the normal installation state of the device body 2, that is, substantially horizontally. However, even if the circuit board 3 is inclined or has a substantially vertical angle, it can function as a fall detection device if the shape of the concave container 5 and the arrangement angle of the magnetic flux detection means 4 are taken into consideration. There is also a difference in the operational effect that can suppress the generation of the vibration sound of the magnetic flux by disposing the magnetic shielding means 16 between the magnetic force generation sources 9 even in the configuration other than the horizontal arrangement of the fall detection device 1. Needless to say there is nothing.

( Reference Example 2 )
14 and 15 show a configuration diagram of the fall detection device in Reference Example 2 of the present invention.

  It should be noted that the same function number is assigned to the same function configuration, and detailed description after that is omitted.

Here, FIG. 14 is a front cross-sectional view showing the configuration of Reference Example 2 of the present fall detection device, and FIG. 15 is a front perspective partial transparent view showing a configuration example of a device on which the device is mounted.

  As shown in the figure, the fall detection device configuration 1 is provided with the vibration suppression means 7, and further, by arranging the magnetic shield means 16 between the magnetic flux element 6 and the magnetic force generation source 9 built in the fall detection device configuration 1, While reducing the influence magnetic force from the magnetic force generation source 9 to the magnetic flux element 6, the vibration of the magnetic flux element 6 can be further suppressed.

  According to the above configuration, even if there is a magnetic force generation source 9 that generates a magnetic force that affects the mounted device to vibrate the magnetic flux element 6, the magnetic-shielding means disposed between the magnetic force generation source 9 and the magnetic flux element 6. 16, while reducing the influence of the magnetic force from the magnetic force source 9 on the magnetic flux element 6, the magnetic flux element 6 in the state where the magnetic flux element 6 at the time of non-falling is located at the lowest central part of the concave container 5 6, since vibration induction itself is suppressed by the vibration suppression means 7, generation of vibration sound caused by rotational vibration and contact vibration of the magnetic flux element 6 can be more effectively suppressed.

  In the above description, the fall detection device 1 includes the circuit board 3 built in the equipment body 2 to be mounted, the magnetic flux detection means 4 disposed on the lower surface side of the circuit board 3, the concave container 5, and the magnetic flux. Although shown as a device composed of a child 6 and a container lid 8 in a composite manner, it is possible to make this component function as a single device part as a unit, and also in this single device part, vibration suppressing means 7 Needless to say, there is no difference in the effect of suppressing the generation of vibration sound of the magnetic flux by disposing the magnetic shielding means 16 between the magnetic force generation sources 9.

  In the above description, the fall detection device 1 is configured as a flat circuit board 3 that is arranged so as to be perpendicular to the direction of gravity in the normal installation state of the device body 2, that is, substantially horizontally. However, even if the circuit board 3 is inclined or has a substantially vertical angle, it can function as a fall detection device if the shape of the concave container 5 and the arrangement angle of the magnetic flux detection means 4 are taken into consideration. In addition to the configuration in which the fall detection device 1 is arranged substantially horizontally, the vibration suppression means 7 is provided, and the antimagnetic means 16 is arranged between the magnetic force generation sources 9 to generate the vibration sound of the magnetic flux child. Needless to say, there is no difference in the function and effect that can be suppressed.

  The fall detection device of the present invention is a device for handling liquids such as devices related to water such as humidifiers, dehumidifiers, electric pots, devices using liquid fuel such as petroleum fan heaters, products such as electric heaters, electric fans, irons, etc. This is an extremely effective portable installation type device that can detect the occurrence of a falling state and prompt the device to stop operation and warn in an electric device that limits the posture during use.

DESCRIPTION OF SYMBOLS 4 Magnetic flux detection means 5 Concave container 5A Funnel-shaped hollow 6 Magnetic flux element 7 Vibration suppression means 10, 10A Elastic body 13 Concave part 14 Convex part 15 Convex ridge 16 Antimagnetic means

Claims (4)

In a state where the concave container is disposed on a horizontal plane inside the concave container having a funnel-like space recessed from the opening on the upper surface, the shape is a quasi-elliptical sphere shape that is circular in top view and crushed in the gravitational direction, and In the configuration of the fall detection in which the magnetic flux magnetized and magnetized so as to have the same magnetic flux is arranged and the magnetic force of the magnetic flux child is detected by the magnetic flux detecting means arranged below the concave vessel, A fall detection device, wherein vibration suppression means for suppressing the vibration of the magnetic flux element is arranged at the innermost central lowermost portion. The vibration suppressing means is provided with a concave portion having a diameter smaller than the diameter of the top view of the magnetic flux element so that a part of the magnetic flux element falls in a state where the concave container is disposed on the horizontal plane at the central lowest part inside the concave container. The fall detection device according to claim 1, comprising: Vibration control means, the position of the convex edge of at least one set only by the Totsuryo the central lowermost portion of the interior of the concave container fall detection device according to claim 1, wherein the placed avoiding the falling direction of the device. The fall detection device according to claim 3 , wherein the position of the convex ridge is arranged in a direction of a side where the side surface of the device intersects the side surface.

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