JP2002048631A - Body-weight sensor unit and body weight measuring instrument using it as well as toilet seat with body- weight sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body-weight sensor unit which deals easily with a failure and whose durability reliability is enhanced. SOLUTION: The body-weight sensor unit is constituted in such a way that a body-weight sensor 1 and a body-weight transmission moving element 4 are housed inside a case 2, that the opening of the case 2 is covered with a cap 3, that an outer-circumferential seal packing 5 is installed in the outer circumferential part of the case 2 and that a signal wire which is connected to the sensor 1 is pulled out from a small hole 7 in the case 2 installed on the opposite side of the cap 3 with reference to the packing 5, Thereby, when a test or a quality control operation is performed singly by the sensor unit, or when its service maintenance is performed, the sensor unit is interchangeable, and its application to a device using the body-weight sensor such as a weight-body measuring instrument or the like becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight sensor unit used for a weight scale, a weight scale using the same, and a toilet seat unit with a weight sensor.

[0002]

2. Description of the Related Art As shown in FIG. 7, a conventional weight sensor unit 32 is directly incorporated into a weighing scale body composed of a top plate 30 and a bottom plate 31.

[0003]

However, the performance of the conventional weight sensor can be checked only after the weight sensor has been incorporated into the main body of the weighing scale, and cannot be repaired or replaced at the time of service.

In addition, since it is open to the outside air, it has insufficient protection against the effects of dust and moisture, and has a problem that its durability and reliability are impaired depending on the use environment conditions.

[0005]

According to the present invention, there is provided a weight sensor unit comprising: a weight sensor;
The case includes a case for storing the weight sensor, a cap provided at an opening of the case, a weight transmission movable element, an outer peripheral seal packing provided at an outer peripheral portion of the case, and a signal line connected to the weight sensor. In this configuration, the signal line is drawn out of the case in a direction opposite to the cap with respect to the outer peripheral seal packing.

According to the above-mentioned invention, it is possible to perform compatibility with a test, quality control, or service maintenance of the weight sensor unit alone, and it is easy to apply the weight sensor unit to a device using a weight sensor such as a weight scale.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a weight sensor, a case for accommodating the weight sensor, a cap provided at an opening of the case, a weight transmission movable element, and an outer peripheral seal provided at an outer peripheral portion of the case. It consists of a packing and a signal line connected to the weight sensor, and this signal line is drawn out of the case in the direction opposite to the cap with respect to the outer peripheral seal packing, so that testing, quality control, Alternatively, compatibility at the time of service maintenance becomes possible, and application to a device using a weight sensor such as a weight scale becomes easy.

Further, by integrally forming the outer peripheral seal packing of the case around the cap, a weight sensor unit which is inexpensive and has excellent waterproof and dustproof reliability can be obtained.

Further, the cap is made of a flexible, dustproof, and waterproof rubber, resin, or metal thin film, so that the cap has no load resistance to the weight, has high weight measurement accuracy, and has high durability reliability. , A weight sensor unit with a high weight can be obtained.

In addition, the weight transmission movable element has a clearance substantially equal to the thickness of the cap through both sides of the cap, penetrating the cap, and forming the cap into a rigid body sandwiching the cap in a water-tight manner. Is movable and can be locked and supported in the direction of load weight, so that the weight can be transmitted only to the weight sensor without applying a compressive load more than a predetermined amount to the cap. An accurate and durable weight sensor unit can be obtained.

The weight sensor is constituted by an electric signal output type sensor such as a strain gauge, a capacitance sensor, or a piezo piezoelectric element, so that an economical weight sensor comprising an optimal sensor adapted to a weight range and measurement accuracy is provided. You can get units.

Further, by mounting the weight sensor unit directly on the bottom plate of the weighing scale from the outside, an economical weighing scale excellent in assemblability, serviceability and durability reliability can be obtained.

[0013] In addition, since the weight sensor unit is mounted on the leg seat for accommodating the leg that comes into contact with the toilet, it is possible to easily switch from the normal toilet seat to the toilet seat unit with the weight sensor by replacing the leg. It is possible to obtain a toilet seat unit with a weight sensor, which can be made economically, can easily perform service maintenance, and can easily measure the weight constantly when using the toilet.

Further, the weight transfer movable element is configured so as to protrude from the lower surface of the toilet seat, so that only the weight transfer movable element is brought into contact with the toilet even if the toilet seat is deformed by a load, and the weight measurement accuracy is improved. Is not impaired.

Furthermore, the toilet seat has a hollow cross-sectional shape, and the connection portion of the signal line of the weight sensor is provided in the hollow portion of the toilet seat, so that the signal line connection portion is protected against moisture, dust and dirt external force. And durability can be improved.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a cross-sectional view of a weight sensor unit according to Embodiment 1 of the present invention.
Is provided with a cap 3 at the opening. Case 2
Is provided with an outer peripheral seal packing 5 made of an elastic seal body such as an O-ring. Further, a signal line 6 connected to the weight sensor 1 is drawn out from a small hole 7 of the case 2. Here, the small hole 7 of the case 2 is provided on the side opposite to the cap 3 with respect to the outer peripheral seal packing 5. This enables compatibility and facilitates application to equipment such as a weight scale.

(Embodiment 2) FIG. 2 is a sectional view of a weight sensor unit according to Embodiment 2 of the present invention.
The outer peripheral seal packing 5 is integrally formed.

Thus, a weight sensor unit having excellent waterproof and dustproof reliability can be obtained at low cost.

(Embodiment 3) FIG. 3 is an enlarged cross-sectional view including a joint portion between a cap 3 and a weight transmission movable element 4 according to a third embodiment of the present invention. The weight transfer movable element 4 is made of a thin metal film or the like, and the weight transfer movable element 4 is a rigid body that is less likely to be compressed and deformed by a load, and has a gap substantially equal to the thickness of the cap 3 on both sides at substantially the center of the cap 3. Penetrates into a watertight shape.

Thus, the cap 3 can be prevented from being subjected to a compressive load exceeding a predetermined value, and the cap 3 has flexibility, dustproofness, and waterproofness, has no load resistance to weight, has high durability reliability, and has high durability. A weight sensor unit with high measurement accuracy can be obtained.

The weight sensor 1 is constituted by an electric signal output type sensor such as a strain gauge, a capacitance sensor, or a piezo piezoelectric element. , A weight sensor unit can be obtained.

(Embodiment 4) FIG. 4 shows an example using a weight sensor unit according to an embodiment of the present invention, and is a sectional view of a toilet seat unit with a weight sensor in which a weight sensor unit is incorporated in a toilet seat.

The toilet seat 10 has a hollow structure including a front plate 11 and a back plate 12, and the back plate 12 is provided with a leg seat portion 13 for holding a leg portion 14 in contact with the toilet. The weight sensor unit 20 protrudes from the lower surface of the toilet seat 10 so that only the weight transfer movable element 4 comes into contact with the toilet surface even if the toilet seat 10 is bent and deformed within the range of the used weight.
It is fitted and housed in the housing.

The toilet seat has a hollow configuration, and the signal line 6 of the weight sensor unit 20 is drawn out to the hollow portion of the toilet seat 1 and connected to a lead wire 15 to the outside.

(Embodiment 5) FIG. 5 is a sectional view showing an embodiment of a toilet seat unit with a weight sensor according to Embodiment 5 of the present invention.
As shown in FIG. 5, the leg 14 of the normal toilet seat is replaced with the weight sensor unit 20 by replacing the leg 14 of the normal toilet seat with the weight sensor unit 20 by making the toilet seat with the weight sensor unit and the leg seat of the normal toilet seat have a common shape. Switching to the toilet seat unit can be performed easily and economically. Further, service maintenance of the weight sensor unit 20 can be easily performed.

(Embodiment 6) FIG. 6 is a sectional view showing an embodiment of a weight scale according to the fifth embodiment of the present invention. As shown in FIG. 6, a weight sensor unit 20 is fitted in a watertight state on a bottom plate 15 of the weight scale. It is stored together.

[0028]

As described above, according to the present invention, the weight sensor and the weight transmission movable element are housed in the case, the opening of the case is covered with the cap, and the outer peripheral seal packing is provided on the outer peripheral portion of the case. The signal line connected to the weight sensor is pulled out of the case in the direction opposite to the cap with respect to the outer peripheral seal packing, enabling compatibility with testing, quality control, or service maintenance using the weight sensor unit alone In addition, application to a device using a weight sensor such as a weight scale becomes easy.

Further, by forming the outer peripheral seal packing integrally with the cap, a weight sensor unit having excellent waterproof and dustproof reliability can be obtained at lower cost.

Further, by forming the cap with a flexible, dustproof, and waterproof rubber, resin, or metal thin film, a weight sensor unit having high durability reliability and high weight measurement accuracy can be obtained. .

Also, the weight transmitting movable element has a clearance substantially equal to the thickness of the cap through both sides of the cap, penetrating the cap, and forming the cap as a rigid body sandwiched in a watertight manner. Is movable and can be locked and supported in the direction of load weight, so that the weight can be transmitted only to the weight sensor without applying a compressive load more than a predetermined amount to the cap. An accurate and durable weight sensor unit can be obtained.

By adopting a configuration in which the cap is locked and supported in the load weight direction, the load can be transmitted only to the weight sensor without applying a compressive load of a predetermined amount or more to the cap, and high accuracy and durability can be achieved. A weight sensor unit having excellent characteristics can be obtained.

The weight sensor is constituted by an electric signal output type sensor such as a strain gauge, a capacitance sensor, or a piezo piezoelectric element, so that an economical weight sensor consisting of an optimal sensor adapted to the weight range and the measurement accuracy can be obtained. You can get units.

Further, by mounting the weight sensor unit directly on the bottom plate of the weight scale from the outside, an economical weight scale excellent in assemblability, serviceability, and durability reliability can be obtained.

Further, the weight sensor unit is mounted on a leg seat for accommodating the leg that comes into contact with the toilet, and the leg is replaced by having the same shape as the mounting shape of the leg seat of the normal toilet seat. It is possible to easily and economically switch from a normal toilet seat to a toilet seat unit with a weight sensor, perform service maintenance easily, and obtain a toilet seat unit with a weight sensor that can easily and regularly measure weight when using the toilet.

Further, the weight transfer movable element is configured so as to protrude from the lower surface of the toilet seat, so that only the weight transfer movable element is brought into contact with the toilet even if the toilet seat is flexed and deformed due to a load. Is not impaired.

Further, the toilet seat has a hollow cross-sectional shape, and the connection part of the signal line of the weight sensor is provided in the hollow part of the toilet seat, thereby protecting the signal line connection part against external force such as moisture, dust and dirt. To improve durability and reliability

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a weight sensor unit according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a weight sensor unit according to a second embodiment of the present invention.

FIG. 3 is a partially enlarged view of a weight transmission movable element of a weight sensor unit according to a third embodiment of the present invention.

FIG. 4 is a sectional view of a toilet seat unit with a weight sensor according to a fourth embodiment of the present invention.

FIG. 5 is a sectional view of a toilet seat unit with a weight sensor according to a fifth embodiment of the present invention.

FIG. 6 is a sectional view of a weight scale according to a sixth embodiment of the present invention.

FIG. 7 is a cross-sectional view of a conventional weight sensor unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weight sensor 2 Case 3 Cap 4 Weight transfer movable element 5 Perimeter seal packing 6 Signal line 7 Small hole 10 Toilet seat 13 Leg seat 14 Leg 15 Bottom plate 20 Weight sensor unit

Claims (9)

[Claims] 1. A weight sensor, a case for accommodating the weight sensor, a cap provided at an opening of the case, a weight transmitting movable element, an outer peripheral seal packing provided at an outer peripheral portion of the case, and a weight sensor. A weight sensor unit comprising a connected signal line, and the signal line drawn out of the case in a direction opposite to the cap with respect to the outer peripheral seal packing. 2. The weight sensor unit according to claim 1, wherein an outer peripheral seal packing of the case is integrally formed around the cap. 3. The cap according to claim 1, wherein the cap is made of a rubber, resin, or metal thin film having flexibility, dustproofness, and waterproofness.
The weight sensor unit as described. 4. The weight transmission movable element has a gap penetrating through the cap and having both sides of the cap substantially equal to the thickness of the cap, the cap being a rigid body sandwiched in a watertight manner, and a positive load on the weight sensor. The weight sensor unit according to claim 1, wherein the weight sensor unit is configured to be freely movable in the direction and to be locked and supported in the direction of the load. 5. The weight sensor unit according to claim 1, wherein the weight sensor is an electric signal output type sensor such as a strain gauge, a capacitance sensor, or a piezoelectric element. 6. A weight sensor, a case for accommodating the weight sensor, a cap provided at an opening of the case, a weight transmitting movable element, an outer peripheral seal packing provided at an outer peripheral portion of the case, and A weight sensor unit comprising a signal line connected to the sensor and having the signal line drawn out of the case in a direction opposite to the cap with respect to the outer peripheral seal packing is configured to be mounted on the bottom plate of the weight scale from outside. Weight scale. 7. A weight sensor, a case for accommodating the weight sensor, a cap provided at an opening of the case, a weight transmission movable element, an outer peripheral seal packing provided at an outer peripheral portion of the case, and A weight sensor unit comprising a signal line connected to a sensor and having the signal line drawn out of the case in a direction opposite to the cap with respect to an outer peripheral seal packing, and a leg seat for accommodating a leg portion abutting on the toilet bowl A toilet seat unit with a weight sensor, comprising a toilet seat having a portion, wherein the weight sensor unit is mounted on the leg seat. 8. The toilet seat unit according to claim 6, wherein the weight transmission movable element is configured so as to protrude from the lower surface of the scale bottom plate or the lower surface of the toilet seat. 9. The toilet seat unit according to claim 6, wherein the weight scale or the toilet seat has a hollow cross-sectional shape, and a connection portion of the signal line of the weight sensor is provided in the hollow portion of the toilet seat.