JP3350513B2 - Article weight measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article weight measuring apparatus, and more particularly, to an improved article weight measuring apparatus which enables an operator to transfer refuse to a refuse collection vehicle and simultaneously measure the weight of the transferred refuse. Related to the device.

[0002]

2. Description of the Related Art Conventionally, garbage from general households is collected free of charge by garbage collection vehicles operated by local governments, but business-related garbage from companies and offices is a garbage collector. Garbage is collected by the garbage collector and the company or office is charged by the garbage collector. Therefore, when collecting garbage from a large number of companies or business establishments, the garbage collection company accurately grasps the weight of the garbage collected from which company or business establishment, and individual companies and business establishments. Needs to be clear.

For this reason, when the garbage stored in a specific container is put into a garbage box of a refuse collection vehicle, the load required for lifting the container is measured using a load cell, and the weight of the garbage is determined based on the load. Techniques for measuring have been proposed. However, according to this technique, in order to measure the weight of the garbage that is not stored in a specific container, the garbage must be stored in the container one by one, and the work efficiency of the garbage collection is significantly reduced.

On the other hand, the applicant of the present application has previously filed an application for a weight measuring device capable of accurately measuring the weight of refuse not stored in a specific container (Japanese Patent Laid-Open No. 9-170944).
issue). However, since the weight measuring device of the prior application is mounted on a refuse collection vehicle, the weight of refuse that can be loaded on the refuse collection vehicle is reduced by the weight of the weigh collection device. Also,
Although the weight measurement device of the prior application can be easily mounted on a newly produced refuse collection vehicle, the existing refuse collection vehicle must be significantly modified to be mounted on the existing refuse collection vehicle. Further, since the weight measuring device according to the prior application has a structure in which the weighing table is moved up and down using a hydraulic device or the like, there is also a problem that the manufacturing cost is increased.

Accordingly, the applicant of the present application has provided weight measuring means on shoes worn by an operator who transfers garbage to a garbage collection vehicle, and the weight measured by the weighing means when the worker lifts the garbage. An article weight measuring device has been developed which calculates the weight of garbage lifted by an operator by subtracting the weight value of the operator from the value (Japanese Patent Laid-Open No. 11-14440).
issue). According to this article weight measuring device, there is no need to provide a weight measuring means in the refuse collection vehicle, and the weight of refuse that can be loaded on the refuse collection vehicle does not decrease. In addition, since the weight of the garbage can be measured wherever the worker is located, the garbage can be transferred to the garbage collection vehicle not only from behind the garbage collection vehicle but also from the side of the garbage collection vehicle. It has the effect.

[0006]

In the article weight measuring apparatus described above (Japanese Patent Laid-Open No. 11-14440), as a weight measuring means provided on a shoe worn by an operator, a load cell or a fluid filled in a sealed chamber is used. A method for measuring pressure changes is proposed.

However, when a load cell is provided on a shoe worn by an operator, a load cell which is thin and lightweight and which is not affected by sweat radiated from the foot of the worker into the shoe is required. There is a problem that the cost increases. Further, since the load cell is high in rigidity and hard, there is also a problem that shoes provided with the load cell are not comfortable to wear.

On the other hand, a method of providing a sealed chamber in a shoe sole worn by an operator to seal a fluid and measure a pressure change thereof is not only comfortable because of flexibility, but also comfortable. There is an advantage that it is not affected by sweat and can be manufactured relatively inexpensively. However, if the thin cross-sectional shape is a rectangular sealed chamber according to the thickness of the shoe sole,
Since the relationship between the magnitude of the load applied to the sealed chamber and the pressure of the fluid generated inside the sealed chamber due to this load becomes complicated and nonlinear, it has been difficult to improve the weight measurement accuracy.

An object of the present invention is to provide an article weight measuring apparatus of the type provided on shoes worn by an operator who transfers articles, in which the structure of a sealed chamber for enclosing a fluid is improved to greatly improve the accuracy of weight measurement. Is to provide.

[0010]

SUMMARY OF THE INVENTION The present invention, which solves the above-mentioned problems, has the flexibility of being provided on shoes worn by a worker who transfers articles and deforming when a load is applied from the feet of the worker. A sealed chamber formed hollow from a material and having a fluid sealed therein, pressure measuring means for measuring the pressure of the fluid sealed in the sealed chamber, and a pressure in the sealed chamber measured by the pressure measuring means. A weight calculating unit that calculates the weight of the article lifted by the worker based on the pressure value, wherein the sealed chamber has a plate-like shape disposed substantially parallel to the shoe sole of the shoe. It has a base portion and a hollow portion provided on one side surface of the base portion to which a load is applied from an operator's foot via the base portion.

That is, since the article weight measuring apparatus according to the present invention seals a fluid in a sealed chamber formed of a flexible material, even if it is provided on a shoe worn by an operator, the comfort is not impaired. In addition, since it is possible to follow the deformation of the shoes caused by the work, the shoes can be prevented from coming off from the feet of the worker. Further, since the load applied from the feet of the worker is applied to the hollow portion via the base portion, the entire hollow portion can be uniformly deformed, and the weight measurement accuracy can be greatly improved.

When the hollow portion is connected to the base portion by being adhered to the base portion or integrally formed with the base portion, the hollow portion does not fall or roll when a load is applied. Thereby, the feet of the worker riding on the hollow portion are not inclined and the comfort of shoes is not deteriorated, and the hollow portion is deformed into an irregular shape and the weight measurement accuracy is not reduced.

When the hollow portion is formed into a hollow spherical shape or a hollow elliptical spherical shape, not only is the elasticity, shape resilience and durability excellent, but also the magnitude of the load applied to the hollow portion and the load caused by this load are reduced. The relationship with the pressure of the fluid generated inside can be made close to linear, and the weight measurement accuracy can be greatly improved. Further, when the hollow portion is formed in a hollow hemispherical shape or a hollow semi-elliptical spherical shape, there is an excellent effect that the required space can be reduced by half in addition to the above-mentioned advantages.

As a material for forming the sealed chamber, a polymer material such as urethane or rubber generally used as a material for shoes can be used. At this time, it is preferable that the hardness of the base portion is higher than that of the hollow portion. Although it is convenient to use air as the fluid to be sealed in the sealed chamber, when the sealed chamber is formed from a polymer material, it is necessary to prevent air from leaking from intermolecular gaps and lowering the pressure in the sealed chamber. Nitrogen gas can be used to prevent this, and a liquid having a small coefficient of thermal expansion such as silicone oil can also be used.

The hollow portions can be provided at a plurality of positions in accordance with the positions of the soles of the workers. At this time, the plurality of hollow portions are arranged side by side on one side surface of one base portion, and the size and thickness of each hollow portion are changed according to each position on the sole of the worker's foot. That is, since the load applied from the foot of the worker is the largest at the heel portion and the smallest at the finger portion, the hollow portion to which the load is applied from the heel of the worker's foot is made large and thick, The hollow portion to which a load is applied from the toe is made small and thin. As a result, not only can the deformation when a load is applied to each hollow portion be uniform, but also the load applied to the hollow portion and the pressure generated in the fluid inside the hollow portion due to this load. , That is, the pressure characteristics can be optimally set, so that the weight measurement accuracy can be further improved.

If a plurality of hollow portions are disposed so as to be sandwiched between a pair of base portions extending in parallel with each other, the load applied to each hollow portion from the feet of the worker can be made more uniform. be able to. At this time, if the shape of the pair of base parts is formed symmetrically with each other according to the shape of the insole that can be inserted into the shoes worn by the worker, the upper and lower parts are turned over to both the pair of left and right shoes worn by the worker. Since they can be used in common, it is possible to reduce the manufacturing cost and the like of the sealed chamber.

Further, if the internal spaces of the plurality of hollow portions provided in accordance with the positions of the soles of the workers are communicated by using communication means such as piping, the pressures in the hollow portions can be made equal to each other. In addition, the weight measurement accuracy can be improved by making the amount of deformation of each hollow portion the same. Further, by arranging one pressure measuring means for each group of the sealed chambers communicated by using the communicating means, the pressure measuring means can be efficiently arranged.

On the other hand, when a plurality of hollow portions having different sizes and thicknesses are used, pressure measuring means is individually arranged for each hollow portion. Thereby, the magnitude of the load applied to each hollow portion can be accurately measured for each hollow portion, and the weight measurement accuracy can be improved.

The pressure measuring means can be provided integrally with the base of the sealed chamber. On the other hand, the pressure measuring means can be attached to the worker's body, and can be connected to the hollow portion via a detachably connectable pipe. In this case, the pressure measuring means composed of a relatively expensive pressure sensor can be separated from the sealed chamber that can be manufactured relatively inexpensively. There is an advantage that the weight measurement accuracy can be improved by protecting from an impact or the like.

The weight calculating means stores, in the storage unit, a load-pressure correspondence map representing a correspondence relationship between the value of the load applied to the hollow portion and the value of the pressure generated in the fluid in the hollow portion due to the load. . Then, the magnitude of the load applied to the hollow portion is obtained by associating the pressure value in the hollow portion measured by the pressure measuring means with the load pressure correspondence map. When a plurality of hollow portions are provided, an individual load pressure correspondence map is set for each hollow portion. Then, the weight of the article held by the operator can be calculated by calculating the sum of the loads applied to the respective hollow portions.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an article weight measuring apparatus according to the present invention will be described in detail with reference to FIGS. Here, FIG. 1 is a side view showing a state where the weight of garbage transferred to a garbage truck is measured using the article weight measuring device according to the present invention, and FIG. 2 is worn by the worker shown in FIG. FIG. 3 is a perspective view showing the structure of the article weight measuring device according to the first embodiment of the present invention, and FIG.
FIG. 5 is a cross-sectional view schematically showing a state where the sealed chamber assembly shown in FIG. 5 is mounted inside the shoe, FIG. 5 is a block diagram showing a main part of the weight calculating device shown in FIG. 3, and FIG. FIG. 7 is a perspective view showing a main part of an article weight measuring device according to a second embodiment of the present invention, and FIG. 8 is a view showing the sealed chamber assembly shown in FIG. FIG. 9 is a cross-sectional view schematically showing a mounted state, and FIG. 9 is a cross-sectional view schematically showing a state where the sealed chamber assembly in the article weight measuring device according to the third embodiment of the present invention is mounted inside shoes. is there. In the following description, the same portions are denoted by the same reference numerals, and description thereof is omitted.

First Embodiment First, an article weight measuring device according to a first embodiment of the present invention will be described with reference to FIGS. The article weight measuring apparatus 100 according to the first embodiment measures and weighs the weight of the garbage 2 every time the worker 3 who transfers the garbage 2 to the garbage collection vehicle 1 holds the garbage 2 in his hand and lifts it. It is.
For this reason, the work shoes 4L and 4R worn by the worker 3 are provided with the sealed chamber assemblies 10L and 10R, respectively.
At the upper ends of the pressure pipes 20L, 20R extending upward along the feet of the worker 3 from the sealed chamber assemblies 10L, 10R, a pressure measuring means 30 and a weight calculating means 40 held at the waist of the worker 3 are provided. Are connected together.

Since the sealed chamber assemblies 10L and 10R are identical except that their shapes are symmetrical, only the right sealed chamber assembly 10R is shown in FIGS. A description will be given of the right sealed chamber assembly 10R.

The sealed chamber assembly 10R is made of a flexible polymer material such as urethane, vinyl chloride, or soft rubber, which is generally used in the manufacture of shoes.
A flat base portion 11 having substantially the same shape as an insole that can be inserted into the work shoes 4R worn by the worker 3, and a hollow hemispherical shape integrally provided on one side of the base portion 11 It has hollow portions 12, 13, 14 and 15. And the base part 11 and each hollow part 12,13,1
Air is sealed inside each of the sealed chambers formed by the chambers 4 and 15. The hardness of the base portion 11 is higher than the hardness of each of the hollow portions 12, 13, 14, and 15, so that the load applied from the sole of the worker's foot can be dispersed to each of the hollow portions via the base portion 11. It has become.

When the worker 3 stands straight with the garbage 2 in his hand, the load applied from the heel of the worker's foot is the largest and the load applied from the finger of the worker's toe is the smallest. . Then, each hollow part 12,13,14,15
As shown in FIGS. 3 and 4, the hollow portion 12 receiving the load from the heel of the worker's foot is the largest, and the hollow portion 15 receiving the load from the toe of the worker is the smallest. Also,
The hollow portion 12 receiving the load from the heel of the operator's foot is the thickest and the hollow portion 1 receiving the load from the operator's toe.
5 is the thinnest. Thereby, each hollow portion 12, 13, 14, 1 when a load is applied from the sole of the worker's foot
5 can be made substantially equal.

The hollow portion 15 which receives a load from the toes of the worker is composed of a pair of hollow portions 15a and 15b which are arranged side by side, and their internal spaces communicate with each other via a communication pipe (not shown). ing. Thereby, since the pressures in the pair of left and right hollow portions 15a and 15b can be equalized, the deformation amounts of the hollow portions 15a and 15b can be equalized. Similarly, the hollow portion 14 receiving a load from the base of the toe of the worker is also formed of a pair of hollow portions 14a and 14b arranged side by side, and the internal spaces thereof communicate with each other via a communication pipe (not shown). ing. As a result, the pressure in the pair of left and right hollow portions 14a and 14b can be made equal to each other.
The deformation amounts of 4a and 14b can be made equal.

As shown in FIG. 4, the above-mentioned closed chamber assembly 10R is arranged such that the sole of the worker's foot is in direct contact with the base portion 11 and the tops of the hollow portions 12, 13, 14, 15 are formed. Is inserted into the work shoes 4R so as to directly contact the inner wall surface of the sole 5 of the work shoes 4R. At this time, steps 5a, 5b, 5c, 5d are provided at positions corresponding to the hollow portions 12, 13, 14, 15 of the shoe sole 5, respectively.
As a result, the flat base 11 of the sealed chamber assembly 10R extends in parallel with the shoe sole 5 inside the work shoe 4R despite the different sizes of the hollow portions 12, 13, 14, and 15. be able to. In addition, considering the comfort of the work shoes 4R, it is also possible to provide a curve or a step on the base portion 11 itself, or to change the shape of the sole 5 of the work shoes 4R.

As shown in FIG. 3, small-diameter pressure pipes 21, 22, 23, and 24 constituting the pressure pipe 20R are respectively connected to the hollow portions 12, 13, 14, 15 via connectors (not shown). Connected detachably. These pressure pipes 21, 22, 23, 24 are connected to respective ports of the pressure measuring means 30, respectively.
The pressure pipes 21, 22, 23, and 24 are bundled together to form the pressure pipe 20R, and are held by pants of work clothes worn by the worker, and the feet of the worker 3 and collected garbage. 2 is protected from interference. The pressure pipe 20L extending from the left sealed chamber assembly 10L (not shown) is similarly configured.

The pressure measuring means 30 has a plurality of pressure sensors (not shown), and a pair of left and right sealed chamber assemblies 10L and 1L.
The pressure inside each hollow part of 0R is measured individually. Then, the measured pressure value is transmitted to the weight calculating means 40 via the signal cable 31.

The weight calculating means 40 is a 16-bit CPU.
Is a portable pocket computer that has a built-in
And the operator 3 can operate easily.

The weight calculating means 40 has an interface section 41 to which the signal cable 31 is connected as shown in FIG. The signals input from the pressure measuring means 30 to the interface section 41 are processed by the central processing section 42 and then stored as a pressure value for each hollow section in the storage section 4.
3 are stored individually. On the other hand, the load pressure correspondence map storage unit 44 previously and individually stores a load pressure correspondence map for each hollow portion. Thereby, the central processing unit 42
The load pressure correspondence map stored in the load pressure correspondence map storage section 44 and the measured pressure value stored in the storage section 43 are individually associated with each hollow section, and each hollow section is Find the magnitude of the applied load. Next, by subtracting the weight of the worker 3 from the sum of the loads applied to the respective hollow portions, the weight of the garbage 2 held by the worker 3 is calculated and displayed on the display unit 45 and stored in the storage unit. 43.

On the other hand, the load pressure correspondence map stored in the load pressure correspondence map storage section 44 is created as follows. That is, the weight for weight verification of the weight value W1 is
When placed on the top, the pressure inside the hollow portion 12 is measured and is set to P1. Similarly, weight values W2, W3, W4, W5
When the weight for weight verification of W6 is placed on the hollow portion 12, the pressure inside the hollow portion 12 is measured, and P2, P3, P4, P
5, P6. The portion between the measurement points is interpolated with the measurement data to create a load pressure correspondence map as shown in FIG.
To memorize.

The control section 46 for controlling the operation of each section described above is provided with various operation keys such as ten keys operated by an operator. Further, the power supply unit 47 has a battery for supplying power to each unit, and a switch for controlling ON / OFF of the power supply.

Next, a procedure for measuring the weight of the refuse to be collected using the article weight measuring apparatus 100 of the first embodiment configured as described above will be described.

The worker 3 that collects refuse operates the weight measurement start button of the control unit 46 before starting the refuse collection operation, and starts the refuse collection operation. First, the worker 3 control unit 46
Key and input the totaling code of the company or office that performs the garbage collection work. Next, when the worker 3 stands quietly and straight on the ground surface, each pressure value Px generated in each hollow part due to the weight of the worker 3 becomes equal to each hollow part 1.
The storage unit 43 which is individually measured for each of 2, 13, 14, and 15
Is stored. Then, the central processing unit 42 sets each hollow part 1
Pressure value Px measured individually for each of 2, 13, 14, 15
By associating each of the hollow portions 12, 13, 14, and 15 with a load pressure correspondence map stored individually for each of the hollow portions 12, 13, 14, 15, the value of the load applied to each of the hollow portions 12, 13, 14, 15 is calculated. The value of Wx is found and stored in the storage unit 43. Then, the weight value of the worker 3 can be obtained by summing the values of the load values Wx applied to the hollow portions 12, 13, 14, and 15, respectively.

Next, when the worker 3 holds the refuse 2 to be collected and stands straight and gently on the ground surface while holding the refuse 2 in his / her hand, the worker 3 holds the refuse 2 in each of the hollow portions due to holding the refuse 2 in his hand. The pressure value Px generated in each of the hollow portions 12, 13, 14,
Each of them is individually measured and stored in the storage unit 43. Then, the central processing unit 42 determines that each of the hollow portions 12, 13, 14,
15 and the pressure value Px individually measured for each
By associating with the load pressure correspondence map stored separately for each of the 2, 13, 14, and 15, each hollow portion 1
The value of the value Wx of the load applied to each of 2, 3, 14, and 15 is found and stored in the storage unit 43. Thereafter, the central processing unit 42 sums up the values of the load values Wx for the hollow portions 12, 13, 14, and 15 stored in the storage unit 43, and subtracts the weight of the worker 3 from the total value. Thus, the weight of the garbage 2 held by the operator 3 is calculated, displayed on the display unit 45 and stored in the storage unit 43, and finally, an alarm sound is sounded to indicate that the weight measurement is completed. Inform

The weight data of each refuse 2 calculated by the weight calculating means 40 is stored in the storage unit 43 together with the total code. Then, when the worker 3 who has finished the garbage collection operation operates the weight measurement end button of the control unit 46, the central processing unit 42 sums up the weight of each garbage 2 stored in the storage unit 43 and collects the garbage. 2 is calculated and displayed on the display unit 45 together with the tally code. When the weight of the refuse 2 is measured in this manner, the above-described weight measurement method described in JP-A-9-170944 can be used.

That is, in the article weight measuring apparatus 100 of the first embodiment, since the hollow portions 12, 13, 14, 15 of the sealed chamber assemblies 10L, 10R are formed into hollow hemispheres, each hollow portion is formed. 12,13,14,15 elasticity,
Not only is the shape resilient and durable, but also the relationship between the magnitude of the load applied to each hollow part and the pressure generated in the fluid inside the hollow part due to this load can be made closer to linear, and the weight measurement accuracy Can be greatly improved.

Each hollow part 12, 13, 14, 15
Since the size and thickness are changed according to the position of the sole of the worker's foot, not only can the amount of deformation of each hollow part when a load is applied be uniform, but also each hollow part Since the relationship between the load applied to the first and the pressure generated in each hollow portion due to this load, that is, the pressure characteristics can be set optimally, the weight measurement accuracy can be improved.

Further, the weight calculating means 40 is provided for each hollow part 1.
A load pressure correspondence map that represents a correspondence relationship between values of loads applied to 2, 13, 14, and 15 and values of pressure generated in each hollow portion due to the loads is stored in the storage unit,
Since the magnitude of the load applied to the hollow portion is determined by associating the pressure value in the hollow portion measured by the pressure measuring means with the load pressure correspondence map, the operator holds the load in his hand. The weight of the article can be accurately measured.

Second Embodiment Next, an article weight measuring apparatus according to a second embodiment of the present invention will be described with reference to FIGS.

The article weight measuring apparatus 200 of the second embodiment
Is a partially modified structure of the article weight measuring device 100 of the first embodiment described above. That is, in the article weight measuring device 200 of the second embodiment, the pressure sensors 51, 52, 53, and 54 are attached to the base 11 in the hollow portions 12, 13, 14, and 15 of the sealed chamber assembly 50 </ b> R. Installed. Then, each of the pressure sensors 51, 52, 5
3, 54, each signal cable 55, 56, 57,
58 is directly connected to the weight calculating means 60. This eliminates the need for juxtaposing the pressure measuring means in the weight calculating means 60, so that the weight calculating means 60 can be made lightweight and compact.

Third Embodiment Next, an article weight measuring apparatus according to a third embodiment of the present invention will be described with reference to FIG.

The article weight measuring device 300 of the third embodiment
In the sealed chamber assembly 70R, each hollow portion is sandwiched between a pair of base portions 71 and 72 extending in parallel with each other. That is, the hollow portions 73a, 73b, 73c, 73d are respectively provided continuously on the lower surface of the base portion 71 on the upper side in the figure. In addition, hollow portions 74a, 74b, 74c, and 74d are respectively provided continuously on the upper surface of the lower base portion 72 in the figure. Further, the hollow portions are arranged so as to be alternate when the pair of base portions 71 and 72 are combined so as to extend in parallel with each other, and the top portions thereof are in contact with the surface of the mating base portion. Is formed. In addition, the pair of base portions 71 and 72 are formed to be vertically symmetrical according to the shape of the insole inserted into the shoe 4R worn by the worker.

Since the load applied from the operator's foot can be evenly distributed to each hollow portion, the deformation amount of each hollow portion can be made uniform and the weight measurement accuracy can be improved. In addition, when this sealed chamber assembly 70R is turned upside down, it can be used for the left shoe 4L worn by the worker.
Transportation costs, sales costs, and the like can be reduced overall.

As described above, each embodiment of the article weight measuring apparatus according to the present invention has been described in detail. However, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, in the above-described embodiment, each hollow portion is a hollow hemisphere, but can be formed into a hollow semi-elliptical sphere, or can be formed into a hollow sphere or a hollow elliptical sphere. .

[0047]

As is apparent from the above description, since the article weight measuring apparatus of the present invention encloses a fluid in a sealed chamber formed of a flexible material, it is provided on a shoe worn by an operator. Not only does it not compromise comfort,
Since it is possible to follow the deformation of the shoes caused by the work, the shoes can be prevented from coming off from the feet of the worker. Further, since the load applied from the feet of the worker is applied to the hollow portion via the base portion, the hollow portion can be uniformly deformed, and the weight measurement accuracy can be improved. Further, since the hollow portion is formed into a hollow spherical shape or a hollow elliptical spherical shape or a hollow hemispherical shape or a hollow semi-elliptical spherical shape, not only is the elasticity, shape resilience and durability high, but also the hollow portion is loaded. The relationship between the magnitude of the load and the pressure generated inside the load due to the load can be made close to linear, and the weight measurement accuracy can be improved. In addition, the hollow part is arranged at a plurality of locations in accordance with each position of the sole of the worker's foot, and the size and thickness are changed according to each position of the sole of the worker's foot, so that the load is reduced. Not only can the deformation amount of each hollow portion when loaded be equalized, but also the relationship between the load applied to the hollow portion and the pressure generated in the hollow portion due to this load, that is, the pressure characteristics are set optimally Therefore, the weight measurement accuracy can be improved. Further, the weight calculating means stores a load pressure correspondence map representing a correspondence relationship between the value of the load applied to the hollow portion and the value of the pressure generated in the hollow portion due to the load in the storage portion, and performs the pressure measurement. Since the magnitude of the load applied to the hollow portion is determined by associating the pressure value in the hollow portion measured by the means with this load pressure correspondence map, The weight can be measured accurately.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where the weight of garbage transferred to a garbage truck is measured using the article weight measuring device according to the present invention.

FIG. 2 is an overall perspective view of shoes worn by the worker shown in FIG. 1;

FIG. 3 is a perspective view showing a main part of the article weight measuring device according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view schematically showing a state where the sealed chamber assembly shown in FIG. 3 is mounted inside a shoe.

FIG. 5 is a block diagram showing the structure of the weight calculation device shown in FIG.

FIG. 6 is a view showing a pressure-weight correspondence map shown in FIG. 5;

FIG. 7 is a perspective view showing a main part of an article weight measuring device according to a second embodiment of the present invention.

8 is a cross-sectional view schematically showing a state where the sealed chamber assembly shown in FIG. 7 is mounted inside a shoe.

FIG. 9 is a cross-sectional view schematically showing a state in which the sealed chamber assembly in the article weight measuring device according to the third embodiment of the present invention is mounted inside shoes.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Garbage collection vehicle 2 Garbage 3 Worker 4 Shoes 5 Sole 5a, 5b, 5c, 5d Step part 10 Sealed-room assembly of 1st Embodiment 11 Base part 12, 13, 14, 15 Hollow part 21, 22, 23 , 24 pressure piping 30 pressure measuring means 31 signal cable 40 weight calculating means of the first embodiment 41 interface section 42 central processing section 43 storage section 44 load pressure correspondence map storage section 45 display section 46 control section 47 power supply section 50 second embodiment Sealed chamber assembly 51, 52, 53, 54 Pressure sensor 55, 56, 57, 58 Signal cable 60 Weight calculating means 70 of second embodiment Sealed chamber assembly 71, 72 Base part 73a of third embodiment 73b, 73c, 73d Hollow part 74a, 74b, 74c, 74d Hollow part 100 Article weight measuring device 200 of the first embodiment 200 Second embodiment Article weight measuring apparatus 300 article weight measuring apparatus according to the third embodiment of the

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Yanagisawa 1319-8, Yawata-cho, Takasaki-shi, Gunma Inside Environmental Systems Co., Ltd. (56) References Patent 3062118 (JP, B2) Patent 3286274 (JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) G01G 19/52 G01G 5/06

Claims (14)

(57) [Claims] 1. A hollow material made of a flexible material which is provided on a shoe worn by a worker who transfers an article and deforms when a load is applied from the worker's foot, and in which a fluid is sealed. A sealed chamber, a pressure measuring means for measuring a pressure of the fluid sealed in the sealed chamber, and a weight of an article lifted by an operator based on a pressure value in the sealed chamber measured by the pressure measuring means. And a weight calculator for calculating the weight of the shoe, wherein the sealed chamber has a plate-shaped base disposed substantially parallel to the sole of the shoe, and an operator through the base. And a hollow portion provided on one side surface of the base portion, to which a load is applied from a foot of the article. 2. The article weight measuring device according to claim 1, wherein said hollow portion is connected to said base portion. 3. The article weight measuring device according to claim 1, wherein the hollow portion is formed in a hollow spherical shape or a hollow elliptical spherical shape. 4. The article weight measuring device according to claim 1, wherein the hollow portion is formed in a hollow hemispherical shape or a hollow semi-elliptical spherical shape. 5. The article weight measuring device according to claim 1, wherein said hollow portion is provided at a plurality of positions corresponding to respective positions on the soles of the workers. 6. The apparatus according to claim 1, wherein said hollow portion has a different size according to each position on the sole of a worker's foot.
6. The article weight measuring device according to any one of claims 5 to 5. 7. The article weight measuring device according to claim 1, wherein said hollow portion has a different thickness in accordance with each position of a sole of a worker's foot. 8. The article weight measuring device according to claim 1, wherein said hollow portion is sandwiched between a pair of said base portions extending in parallel with each other. 9. The apparatus according to claim 1, further comprising a communication unit for connecting the internal spaces of the hollow portion to each other, and wherein the pressure measurement unit measures a pressure in the space connected by the communication unit. An article weight measuring device according to any one of claims 5 to 8. 10. The pressure measuring means is provided separately for each of the plurality of hollow portions.
An article weight measuring device according to any one of the above. 11. The article weight measuring device according to claim 1, wherein said pressure measuring means is provided on said base portion. 12. The pressure measuring means is held by an operator's body and is connected to the hollow portion via a pipe detachably attachable to the hollow portion. Item 10. The article weight measuring device according to any one of Items 1 to 10. 13. The load-pressure correspondence map, which indicates a correspondence relationship between a value of a load applied to the hollow portion and a value of a pressure generated in the hollow portion due to the load, is included in the weight calculating means. The weight of the article is calculated by determining the magnitude of the load applied to the hollow portion by associating the pressure value in the hollow portion measured by a measuring unit with the pressure value. An article weight measuring device according to any one of the above. 14. The article weight measuring device according to claim 13, wherein said weight calculating means has said load pressure correspondence map individually for each of said plurality of hollow portions.