TW202326044A - Inventory management device which can be simplified in configuration - Google Patents

Abstract

The present invention provides an inventory management device. The inventory management device (100) comprises a mounting table (1) and an article sensor (3). The beverage container (P) is mounted on the mounting table (1). The article sensor (3) judges whether the beverage container (P) is placed on the mounting table (1) or not. The mounting table (1) has a light transmission part (11) for transmitting light. The article sensor (3) has a light-emitting portion (31), a light-receiving portion (32), and a detecting portion (33). The light-emitting portion (31) emits the light to the light transmission part (11). The light-receiving portion (32) receives the light from the light transmission part (11). The detecting portion (33) detects the information of the light received by the light receiving portion (32).

Description

inventory management equipment

The present invention relates to an inventory management device.

The refrigerator described in Patent Document 1 is equipped with an egg sensor and a beverage sensor in order to function as an inventory control device. The egg sensor and the beverage sensor are weight sensors that measure the weight of eggs and beverages as stocks, respectively. [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2007-113818

[Problem to be solved by the invention]

The item in the refrigerator is not correctly placed on the weight sensor, for example, when it hangs on other items or a partition member and floats, or when an adjacent item is hung on the weight sensor, the weight sensor The machine sometimes does not judge items correctly. In addition, in order to be less affected by the loading state of the article, it is considered to use a plurality of weight sensors, but there is a problem that the structure becomes complicated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an inventory management device capable of simplifying the configuration. [Technical means to solve the problem]

According to one aspect of the present invention, an inventory management device includes a mounting table and an item sensor. Items are placed on the loading table. The article sensor judges whether an article is placed on the mounting table. The mounting table has a light-transmitting portion that transmits light. The article sensor has a light emitting unit, a light receiving unit, and a detecting unit. The light emitting part emits light to the light transmitting part. The light receiving part receives the light from the light transmitting part. The detection unit detects information of the light received by the light receiving unit. [Effect of Invention]

According to the inventory management device of the present invention, the configuration can be simplified.

Embodiments will be described below with reference to the drawings. In addition, the same figure code|symbol is attached|subjected to the same or equivalent part in a figure, and the description is not repeated. In addition, in the following descriptions, even if terms indicating specific positions and directions of "upper", "lower", "left", "right", "front" or "rear" are used, these terms are for the sake of understanding and implementation. What is used for the content of the method has nothing to do with the direction of actual implementation. [Embodiment 1]

Embodiment 1 of the inventory management device 100 will be described with reference to FIGS. 1 to 6 . FIG. 1 is a longitudinal sectional view of an inventory management device 100 according to Embodiment 1. As shown in FIG. FIG. 2 is a top view of the placement table 1 of the inventory management device 100 when viewed as a square top view. FIG. 3 is a top view of the placement platform 1 of the inventory management device 100 when viewed as a rectangle. FIG. 4 is a top view of the mounting platform 1 of the inventory management device 100 when viewed from above as a circle. FIG. 5 is a diagram showing a door rack 91 of a refrigerator 90 provided with the inventory management device 100 . FIG. 6 is a longitudinal sectional view of the inventory control device 100 installed on the door rack 91 of the refrigerator 90 .

As shown in FIG. 1 , an inventory management device 100 includes a mounting table 1 and an article sensor 3 . Beverage container P (an example of an article) is placed on the mounting table 1 . The article sensor 3 determines whether or not a beverage container P is placed on the mounting table 1 . The mounting table 1 has a light-transmitting portion 11 that transmits light. The article sensor 3 has a light emitting unit 31 , a light receiving unit 32 and a detecting unit 33 . The light emitting unit 31 emits pulsed light to the light transmitting unit 11 . The light receiving part 32 receives the light from the light transmitting part 11 . The detection unit 33 detects information of the light received by the light receiving unit 32 . The information to be detected is, for example, whether the delay time from when the light emitting unit 31 emits light to when the light is received by the light receiving unit 32 is less than a predetermined value. The value less than the predetermined value is, for example, a range of values that can be judged that the light from the light emitting unit 31 is reflected by the beverage container P and received by the light receiving unit 32 .

Light from the light emitting unit 31 is reflected on the bottom surface of the beverage container P placed on the mounting table 1 . The reflected light is received by the light receiving unit 32 . The detection unit 33 detects whether or not the delay of light received by the light receiving unit 32 (hereinafter referred to as delay amount) is smaller than a predetermined value. If the detection unit 33 detects that the delay amount is smaller than the predetermined value, the article sensor 3 determines that the beverage container P is placed on the mounting table 1 . If the detection unit 33 detects that the delay amount is equal to or greater than a predetermined value, the article sensor 3 determines that the beverage container P is not placed on the placing table 1 . Therefore, since the inventory control device 100 determines whether or not the beverage container P is placed on the mounting table 1 by the article sensor 3, the structure can be simplified.

The item sensor 3 is, for example, a ToF (Time of Flight: Time of Flight) sensor. However, the present invention is not limited thereto. For example, whether or not there is a placed article may be determined based on the position or amount of light received by the light receiving unit 32 . If the presence or absence of an article is determined by the position or amount of light received by the light receiving unit 32 , the information detected by the detection unit 33 is whether the position or amount of light is within a predetermined position or above a predetermined value. In this case, the object sensor 3 is a reflective photodetection sensor, an optical ranging sensor, an infrared sensor, a laser sensor, or the like. The light emitting unit 31 of the ToF sensor emits pulsed light. The light emitting part 31 of the infrared sensor emits infrared rays (light with a wavelength range of 780nm to 100,000nm). The light emitting part 31 of the laser sensor emits laser light. In addition, instead of light, an ultrasonic sensor may be used.

The inventory management device 100 further includes a wireless transmitter 4 . The wireless transmitter 4 transmits the result judged by the object sensor 3 . That is, the wireless transmitter 4 wirelessly transmits the result of judging whether or not the beverage container P is placed on the mounting table 1 . Therefore, the inventory management device 100 does not require a wired connection to an external device, so that the configuration can be simplified.

The light transmitting portion 11 is located at a position other than the centroid 1C (center of gravity) of the upper surface of the mounting table 1 . When the beverage container P is a bottle-shaped container or the like (the shape of the beverage container P shown by the two-dot chain line in FIG. When the distance from the beverage container P is large. However, the distance between the upper surface of the mounting table 1 and the beverage container P is small except for the centroid 1C of the upper surface of the mounting table 1 . If the distance between the upper surface of the table 1 and the beverage container P is small, the light from the light emitting unit 31 reflected by the beverage container P is easily received by the light receiving unit 32 . Therefore, by positioning the translucent portion 11 outside the centroid 1C of the upper surface of the mounting table 1 , the light from the light emitting portion 31 reflected by the beverage container P is easily received by the light receiving portion 32 . As a result, by locating the light-transmitting portion 11 outside the centroid 1C of the upper surface of the mounting table 1, the reliability of determination by the article sensor 3 can be improved.

Here, the light-transmitting portion 11 is, for example, the through-hole 12 and the light-transmitting sheet 13 . The through hole 12 penetrates the mounting table 1 up and down.

The transparent sheet 13 covers the through hole 12 . The transparent sheet 13 is disposed below the through hole 12 or in the through hole 12 . The light-transmitting sheet 13 is in close contact with the mounting table 1 (specifically, the periphery of the through hole 12 ) without gaps. Therefore, even if a liquid such as a beverage contained in the beverage container P drops on the through hole 12, the liquid does not infiltrate between the light-transmitting sheet 13 and the mounting table 1, thereby improving reliability.

The light-transmitting sheet 13 is located at a position where light from the light emitting unit 31 is not reflected by the light receiving unit 32 . Therefore, the light-transmitting sheet 13 is arranged at a position close to the light-emitting portion 31 and the light-receiving portion 32 . Specifically, the light-transmitting sheet 13 covers the through-hole 12 from the lower side of the mounting table 1 . By making the light-transmitting sheet 13 prevent the light from the light emitting unit 31 from being reflected by the light receiving unit 32 , it is possible to improve the reliability of determination by the article sensor 3 . Instead of the light-transmitting sheet 13 , a light-transmitting material may also cover the surface of the mounting table 1 . In this case, a translucent material is provided on the through hole 12 . As the translucent material, glass, resin, or the like can be used. In the case of a transparent resin, it can be integrally molded with the colored resin forming the mounting table 1 by two-color molding. In this case, by allowing the light emitting portion 31 and the light receiving portion 32 to enter the through hole 12 , it is preferable that the translucent material is arranged at a position close to the light emitting portion 31 and the light receiving portion 32 .

The translucent part 11 is located 10 mm or more and 70 mm or less from the centroid 1C (center of gravity) of the upper surface of the mounting table 1 . The bottom surface of the beverage container P often has a deep depression within a range from the center of the bottom surface to a radius of 10 mm. Therefore, the distance between the light-transmitting portion 11 and the bottom surface of the beverage container P is relatively small by positioning the light-transmitting portion 11 at the centroid 1C of the upper surface of the mounting table 1 by 10 mm or more. On the other hand, the bottom surface of the beverage container P is often within a radius of 70 mm or less from the center of the bottom surface. Therefore, by positioning the light-transmitting portion 11 on the centroid 1C of the upper surface of the mounting table 1 to 70 mm, the light-transmitting portion 11 is positioned below the bottom surface of the beverage container P. As a result, the reliability of determination by the article sensor 3 can be improved by positioning the light transmitting portion 11 at a distance of 10 mm or more and 70 mm or less from the centroid 1C of the upper surface of the mounting table 1 . In addition, it is preferable that the light-transmitting portion 11 is located at least 10 mm from the periphery of the upper surface of the mounting table 1 . Thereby, the bottom surface of the beverage container P can be positioned on the light-transmitting part 11 in the state in which the beverage container P was stably placed.

As shown in FIG. 2 , the upper surface of the mounting table 1 is, for example, square in plan view. Viewed as a square in plan, it is suitable for beverage containers P (such as medium-sized or smaller plastic bottles or cans) and beverage containers P (paper containers, etc.) with approximately square cross sections that are approximately circular in cross section. Although the translucent portion 11 is shown positioned between one side of the mounting table 1 and the centroid 1C in plan view, it may be positioned between a corner of the mounting table 1 and the centroid 1C or the like.

As shown in FIG. 3 , the upper surface of the mounting table 1 is, for example, rectangular in plan view. It is suitable for beverage containers P (such as large plastic bottles) having a substantially rectangular cross section because it is rectangular in plan view. Although the translucent part 11 is shown to be located between the corner of the mounting table 1 and the centroid 1C in plan view, it may be located between the long side (or short side) of the mounting table 1 and the centroid 1C, etc.

As shown in FIG. 4 , the upper surface of the mounting table 1 is, for example, circular in plan view. It is suitable for the case of the drink container P whose cross section is substantially circular by being circular in planar view.

The upper surface of the mounting table 1 is not limited to a square, a rectangle, or a circle in a plan view, and may have any planar shape. Examples of planar shapes include polygons, various circles, and the like. The polygon is, for example, a quadrangle such as a rhombus or a parallelogram, a triangle such as an isosceles triangle or an equilateral triangle, or a pentagon or more. Various circles are, for example, ellipse, ellipse, egg-shape, or a shape in which polygons are rounded.

The place where the inventory management device 100 is installed is a place where it is necessary to manage items that become stock. In the case where the item is a food or drink container P, the place where the inventory management device 100 is installed is, for example, a food rack or a refrigerator. As shown in FIG. 5 , the specific place where the inventory management device 100 is installed is, for example, inside the door shelf 91 of the refrigerator 90 .

As shown in FIG. 6, the bottom portion 92 of the door rack 91 becomes lower on the take-out side of the beverage container P (left side in FIG. 6). The translucent portion 11 is preferably positioned lower than the centroid 1C. Therefore, the inventory management device 100 in the door rack 91 is arranged so that the light-transmitting portion 11 is located on the side where the beverage container P is taken out from the centroid 1C. With this arrangement, the beverage container P placed on the mounting table 1 is easily deviated to the take-out side. Since the beverage container P is biased toward the take-out side, the light-transmitting portion 11 is located below the bottom surface of the beverage container P even if the beverage container P is small. As a result, the reliability of the judgment of the article sensor 3 can be improved. [Embodiment 2]

Next, Embodiment 2 of the inventory management device 100 will be described with reference to FIGS. 7 to 11 . Embodiment 2 is different in that the inventory management device 100 is provided with a weight sensor 7 in addition to the article sensor 3 .

FIG. 7 is a longitudinal sectional view of the inventory management device 100 according to the second embodiment. FIG. 8 is a vertical cross-sectional view in the case where the bottom surface of the support guide portion 21 of the inventory management device 100 is a curved surface. FIG. 9 is an S-S cross-section in FIG. 7 and FIG. 8, and is a cross-sectional view when the cross-section of the support guide part 21 is circular. FIG. 10 is an S-S cross-section in FIG. 7 and FIG. 8, and is a cross-sectional view in the case where the cross-section of the support guide part 21 is cross-shaped. FIG. 11 is an S-S cross-section in FIG. 7 and FIG. 8, and is a cross-sectional view in the case where the cross-section of the support guide part 21 is star-shaped.

As shown in FIG. 7 , the inventory management device 100 includes an upper member 10 , a lower member 50 and one weight sensor 7 . The upper member 10 has a mounting table 1 . One weight sensor 7 receives the upper member 10 . The lower part 50 is provided with a weight sensor 7 . The lower member 50 has a cylindrical body 60 . The upper member 10 has a guide portion 20 guided by a cylindrical body 60 . The upper end of the cylindrical body 60 does not come into contact with the upper member 10 even if the upper member 10 moves downward slightly due to the weight of the beverage container P placed on the mounting table 1 , for example.

Since the upper end of the cylindrical body 60 is not in contact with the upper member 10, the cylindrical body 60 does not support the upper member 10 from below. Therefore, even if the side surface of the cylindrical body 60 is in contact with the upper member 10 , most of the weight of the upper member 10 is borne by one weight sensor 7 . That is, in order to bear the weight of the upper side member 10, a plurality of weight sensors 7 are not required. As a result, the inventory management device 100 can be configured more simply. In addition, since it is determined whether or not the beverage container P is placed on the mounting table 1 by the article sensor 3 and the weight sensor 7, reliability can be further improved.

The lower member 50 has a bottom plate 51 in addition to the cylindrical body 60 . The bottom plate 51 is provided with a cylindrical body 60 on the upper surface. The lower member 50 may also have a cushion pad 71 laid under the weight sensor 7 . The buffer pad 71 is not limited to be under the weight sensor 7 , and can also be laid on the weight sensor 7 . The cushion pad 71 has a thickness of, for example, about 0.5 mm±0.2 mm.

The weight sensor 7 is a sensor for measuring the weight received. The weight sensor 7 is, for example, a film-shaped load cell, a pressure sensor capable of weight measurement, or the like. The wireless transmitter 4 also transmits the result of the weight measured by the weight sensor 7 .

Here, the distance between the upper end of the cylindrical body 60 and the portion of the upper member 10 that is opposite to the upper end of the cylindrical body 60 is defined as a distance A. That is, the distance A is the distance between the upper end of the cylindrical body 60 and a portion of the upper member 10 that is opposite to the upper end of the cylindrical body 60 . In addition, let the distance between the cylindrical body 60 and the guide part 20 be distance B. That is, the distance B is the distance between the cylindrical body 60 and the guide part 20 . Preferably, the distance A is greater than the distance B (distance A>distance B).

By making the distance A larger than the distance B, even if the upper member 10 is tilted, the upper end of the cylindrical body 60 and the upper member 10 can be reliably kept out of contact (distance A>0). Therefore, even if the upper member 10 is inclined, the cylindrical body 60 does not support the upper member 10 from below. As a result, even if the upper member 10 is tilted, most of the weight of the upper member 10 is borne by one weight sensor 7, so that reliability can be further improved.

The cylindrical body 60 in the example shown in FIG. 7 is the inner cylindrical body 61 . The inner cylindrical body 61 is provided at a position close to the centroid 1C of the mounting table 1 . One weight sensor 7 is arranged inside the inner cylindrical body 61 . The guide portion 20 guided by the inner cylindrical body 61 is the support guide portion 21 . The support guide portion 21 is along the inner surface of the inner cylindrical body 61 . The support guide portion 21 has both a function of guiding the inner cylindrical body 61 and a function of being received by the weight sensor 7 . Since the guide portion 20 supports the guide portion 21 , an additional support to be received by the weight sensor 7 is not required. Therefore, the configuration can be further simplified.

The object sensor 3 is disposed outside the centroid 1C of the upper surface of the mounting platform 1 . On the other hand, one weight sensor 7 is disposed inside the inner cylindrical body 61 , that is, at a position close to the centroid 1C of the mounting table 1 . That is, the article sensor 3 and the weight sensor 7 are arranged at different positions when viewed from above. Therefore, the space within the inventory management device 100 is efficiently utilized. As a result, the inventory management device 100 can be configured more simply.

The distance A in the example shown in FIG. 7 is the distance between the upper end of the inner cylindrical body 61 and a portion of the upper member 10 that faces the upper end of the inner cylindrical body 61 . In addition, the distance B is the distance between the inner surface of the inner cylindrical body 61 and the outer surface of the support guide part 21 . Distance A is greater than distance B (distance A>distance B).

Next, a modified example of the bottom surface 22 in the support guide portion 21 will be described. The bottom surface 22 of the support guide part 21 is a flat surface in the example shown in FIG. 7, and is a curved surface in the example shown in FIG. The curved surface (the bottom surface 22 of the support guide part 21 ) shown in FIG. 8 protrudes downward toward the center.

As shown in FIG. 8 , since the bottom surface 22 of the support guide portion 21 is a curved surface, even if the upper member 10 is inclined, the pressure from the curved surface to the weight sensor 7 is not easily changed. Therefore, even if the upper member 10 is tilted, the weight measured by the weight sensor 7 hardly changes. As a result, the reliability of weight sensor 7 can be further improved.

Next, a modified example of the cross-sectional view (the SS cross-sectional view of FIGS. 7 and 8 ) of the support guide portion 21 and the inner cylindrical body 61 will be described.

As shown in FIG. 9 , the cross-sectional view of the support guide portion 21 is circular. In other words, the support guide 21 is cylindrical. On the other hand, the cross-sectional view of the inner cylindrical body 61 is circular. In other words, the inner cylindrical body 61 is cylindrical.

As shown in FIG. 10 , the cross-sectional view of the support guide portion 21 is cross-shaped. In other words, the support guide portion 21 is a radial column that radiates at equal intervals in four directions. On the other hand, the inner cylindrical body 61 is cylindrical like FIG. 9 .

As shown in FIG. 11 , the cross-sectional view of the support guide portion 21 is star-shaped. In other words, the support guide portion 21 is a radial column that radiates at equal intervals in eight directions. On the other hand, the inner cylindrical body 61 is cylindrical like FIG. 9 and FIG. 10 .

The cylindrical body 60 including the inner cylindrical body 61 is not limited to the shape (cylindrical shape) shown in FIGS. The support guide part 21 is not limited to the shape shown in FIGS. 9 to 11 (cylindrical and radial columns), as long as it is a shape guided by the inner cylindrical body 61. [Embodiment 3]

Next, Embodiment 3 of the inventory management device 100 will be described with reference to FIG. 12 . Embodiment 3 differs from Embodiment 2 in the shape of the guide part 20 and the cylindrical body 60 . FIG. 12 is a longitudinal sectional view of an inventory management device 100 according to Embodiment 3. As shown in FIG.

The cylindrical body 60 of the example shown in FIG. 12 is the outer cylindrical body 64 . The outer cylindrical body 64 is disposed on the edge of the upper surface of the bottom plate 51 . The guide portion 20 guided by the outer cylindrical body 64 is the outer guide portion 24 . The outer guide portion 24 follows the outer surface of the outer cylindrical body 64 .

The outer guide portion 24 is different from the support guide portion 21 of Embodiment 2 in that it is not received by the weight sensor 7 . Therefore, in the third embodiment, the upper member 10 has the support body 15 supported by the weight sensor 7 . The supporting body 15 is provided close to the centroid 1C on the lower surface of the mounting table 1 . The bottom surface 16 of the support body 15 is a curved surface. The curved surface (the bottom surface 16 of the support body 15 ) protrudes downward toward the center. The lower part 50 has a raised portion 82 . The raised portion 82 is disposed on the upper surface of the bottom plate 51 right below the supporting body 15 . A weight sensor 7 is disposed on the upper end of the elevated portion 82 .

The elevated portion 82 is used as a battery case. That is, a battery (not shown) is arranged inside the raised portion 82 serving as a battery case. By using raised portion 82 as a battery housing, the space within inventory management device 100 is effectively utilized. Therefore, the inventory management device 100 can be configured more simply.

Here, the distance between the lower end of the outer guide portion 24 and the portion of the lower member 50 that faces the lower end of the outer guide portion 24 is defined as a distance C. That is, the distance C is the distance between the lower end of the outer guide portion 24 and the portion of the lower member 50 that faces the lower end of the outer guide portion 24 . In addition, let the distance between the outer cylindrical body 64 and the outer guide part 24 be the distance D. That is, the distance D is the distance between the outer surface of the outer cylindrical body 64 and the inner surface of the outer guide portion 24 . The distance C is preferably greater than the distance D (distance C>distance D).

By making the distance C larger than the distance D, even if the upper member 10 is tilted, the lower end of the outer guide portion 24 and the lower member 50 can be reliably maintained in non-contact (distance C>0). Therefore, even if the upper member 10 is inclined, the bottom plate 51 of the lower member 50 does not support the upper member 10 from below. As a result, even if the upper member 10 is tilted, most of the weight of the upper member 10 is borne by one weight sensor 7, so that reliability can be further improved. [Embodiment 4]

Next, Embodiment 4 of the inventory management device 100 will be described with reference to FIG. 13 . Embodiment 4 is an embodiment in which Embodiment 2 and Embodiment 3 are combined. Fig. 13 is a longitudinal sectional view of an inventory management device 100 according to Embodiment 4.

The cylindrical body 60 of the example shown in FIG. 13 is an inner cylindrical body 61 and an outer cylindrical body 64 . The guide portions 20 guided by the inner cylindrical body 61 and the outer cylindrical body 64 are the inner guide portion 21 and the outer guide portion 24 , respectively. Since the support guide portion 21 of the upper member 10 functions as the support body 15 of the third embodiment, it does not have the support body 15 and the raised portion 82 of the third embodiment.

The cylindrical body 60 is an inner cylindrical body 61 and an outer cylindrical body 64 , and the guide part 20 is a support guide part 21 and an outer guide part 24 , so that the guide part 20 is appropriately guided in the cylindrical body 60 . Therefore, reliability can be further improved.

In Embodiments 2 to 4, the description of fixing the upper member 10 to the lower member 50 is omitted. Therefore, this fixing will be described with reference to FIGS. 14 and 15 . FIG. 14 is a longitudinal sectional view of a portion where the upper part 10 is fixed relative to the lower part 50 of the inventory management device 100 . FIG. 15 is a longitudinal sectional view of a portion where the upper part 10 is fixed relative to the lower part 50 of the inventory management device 100 .

As shown in FIG. 14 , the upper member 10 has bosses 26 for threads and case fixing screws 68 . The screw boss 26 is provided on the lower surface of the mounting table 1 . The case fixing screw 68 is screwed to the screw boss 26 from the lower side.

The lower member 50 has a perforated cylinder 65 . The perforated cylinder 65 is disposed on the upper surface of the bottom plate 51 . The nipple hole cylinder 65 communicates with a hole formed on the bottom plate 51 . The iron-hole cylinder 65 has an upper-stage iron-hole cylinder 66 and a lower-stage iron-hole cylinder 67 . The boss 26 for the thread is guided by the upper-stage nipple hole cylinder 66 . Therefore, the diameter of the upper section of the hole cylinder 66 is larger than the boss 26 for threading, and smaller than the head of the housing fixing screw 68 . The lower section of the hole tube 67 accommodates the heads of the housing fixing screws 68 . Therefore, the diameter of the lower section of the hole cylinder 67 is larger than that of the head of the housing fixing screw 68 .

Since the screw boss 26 is guided by the upper nipple cylinder 66 , the upper nipple cylinder 66 functions as the cylindrical body 60 , and the screw boss 26 functions as the guide portion 20 . Therefore, most of the weight of the upper side member 10 is borne by one weight sensor 7 by employing at least the screw boss 26 and the upper-stage nipple 66 . As a result, the configuration can be simplified, and the reliability can be further improved.

As shown in FIG. 15 , the lower member 50 may also have a compression spring 69 . The compression spring 69 is arranged around the upper section of the hole tube 66 . The lower end of the compression spring 69 presses down the step between the upper section of the hole tube 66 and the lower section of the hole tube 67 . On the other hand, the upper end of the compression spring 69 presses the lower surface of the mounting table 1 upward.

In the configuration shown in FIG. 14 or FIG. 15 , when the inventory management device 100 is quadrangular in plan view, it is preferable to be located at two or four corners of a diagonal shape in plan view. This is because the fixation of the upper member 10 relative to the lower member 50 is stabilized by this position. However, the number and positions of the components shown in FIG. 14 or FIG. 15 are not particularly limited. [Embodiment 5]

Next, Embodiment 5 of the inventory management facility 100 will be described with reference to FIGS. 16 and 17 . Embodiment 5 is an embodiment of Embodiment 4 shown in FIG. 13 . FIG. 16 is a perspective view of an inventory management device 100 according to Embodiment 5. As shown in FIG. FIG. 17 is a cross-sectional view of XVII-XVII in FIG. 16 .

As shown in FIG. 17 , the lower member 50 further includes a base plate 5 , a battery cover 86 , and cover attachment and detachment screws 87 .

The substrate 5 is fixed to the outer cylindrical body 64 . The substrate 5 is inserted through the inner cylindrical body 61 and the support guide portion 21 . The substrate 5 supplies power from a battery (not shown) to the object sensor 3 and the weight sensor 7 . The substrate 5 sends the judgment and measurement results of the object sensor 3 and the weight sensor 7 to the wireless transmitter 4 (not shown).

The battery cover 86 is used to hold a battery (not shown). The cover attachment and detachment screws 87 attach the battery cover 86 to the bottom plate 51 by screwing.

The through hole 12 of the light transmitting portion 11 has an upper through hole 12U and a lower through hole 12L. The upper through-hole 12U is larger than the lower through-hole 12L. The lower through-hole 12L is covered with the light-transmitting sheet 13 from below.

As shown in FIG. 11 , the support guide portion 21 is a radial column that radiates at equal intervals in eight directions.

As shown in FIG. 16 , the mounting table 1 has a quadrangular shape in plan view with rounded corners. The bosses 26 for threads, the housing fixing screws 68 and the spigots 65 shown in FIG. [Embodiment 6]

Next, Embodiment 6 of the inventory management facility 100 will be described with reference to FIGS. 18 and 19 . Embodiment 6 is an embodiment of Embodiment 3 shown in FIG. 12 . FIG. 18 is a perspective view of an inventory management device 100 according to the sixth embodiment. Fig. 19 is a cross-sectional view of XIX-XIX in Fig. 18 .

As shown in FIG. 19, the raised portion 82 of the lower member 50 is used as a battery case. Therefore, the coin-type battery 8 is disposed inside the elevated portion 82 .

The lower member 50 also has a case fixing cylinder 83 and a case fixing screw 84 . The shell fixing cylinder 83 is disposed on the upper surface of the bottom plate 51 . The housing fixing screw 84 fixes the raised portion 82 to the housing fixing cylinder 83 by threading.

The battery cover 86 has a battery support ring 81 . The battery support ring 81 supports the coin-type battery 8 from below.

As shown in FIG. 18 , the mounting table 1 has a square shape with rounded corners in a planar view. The bosses 26 for threading, the case fixing screws 68 , the bore holes 65 and the compression springs 69 shown in FIG.

As shown in FIG. 19 , the stage 1 has a transparent upper cover 18 and a lower stage 19 . The transparent upper cover 18 allows light to pass through. Therefore, the transparent upper cover 18 functions as the light-transmitting sheet 13 . Step down 19 is covered by transparent loam cake 18. The lower table 19 has a through hole 12 . Therefore, the through-holes 12 of the transparent upper cover 18 and the lower table 19 function as the light-transmitting portion 11 .

The embodiments of the present invention have been described above with reference to the drawings. However, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, it can implement in various forms. In the drawings, each component is schematically shown as a main body for easy understanding, and the thickness, length, number, interval, etc. of each component shown in the drawings may be different from the actual ones for the convenience of drawing. In addition, the material, shape, size, etc. of each component shown in the above-mentioned embodiments are examples, and are not particularly limited, and various changes can be made within the range that does not substantially depart from the effects of the present invention.

(1) The inventory management device 100 of Embodiments 2 to 6 has been described as including the article sensor 3 and one weight sensor 7 . However, the inventory management device 100 of Embodiments 2 to 6 may not include the article sensor 3 . Inventory management equipment 100 of Embodiments 2 to 6 is independent of article sensor 3 , and most of the weight of upper member 10 is received by one weight sensor 7 through cylindrical body 60 and guide portion 20 . Therefore, even if the inventory management device 100 of Embodiments 2 to 6 does not include the article sensor 3 , the configuration can be further simplified.

(2) In the inventory management equipment 100 of Embodiments 1 to 6, although not shown, rubber feet (not shown) may be provided at the four corners of the bottom surface of the bottom plate 51 . When the hole tube 65 is located at the four corners of the bottom surface of the bottom plate 51, the rubber feet are inserted into the hole tube 65 from below. In the inventory management device 100, the rubber feet function as anti-slip parts, so that reliability can be further improved.

(3) In the inventory control device 100 of Embodiments 1 to 6, the destination of transmission by the wireless transmitter 4 is not described. The destination of the wireless transmitter 4 is a wireless communication device, which is installed in a place where items in inventory need to be managed, such as a food shelf or a refrigerator 90 . The wireless communication device can send the information received from the inventory management device 100 to a smart phone or a server. Industrial Applicability

The invention provides inventory management equipment, which has industrial applicability.

P: drink container 1: Carrying table 1C: centroid 4: Wireless transmitter 5: Substrate 7: Weight sensor 8: Button battery 10: Upper part 11: Translucent part 12: Through hole 12U: upper through hole 12L: lower through hole 13: Translucent film 15: Support body 16: The bottom surface of the supporting body 18: Transparent top cover 19: base 20: Guidance Department 21: Support guide part 22: The bottom surface of the supporting guide 24: Outer guide part 26: Boss for thread 31: Luminous department 32: Light receiving part 33: Detection Department 50: lower part 51: Bottom plate 60: cylinder 61: Inner cylindrical body 64: outer cylindrical body 65: 鍃 hole tube 66: The upper hole tube 67: Bottom hole cylinder 68: Shell fixing screw 69: Compression spring 71: buffer pad 81: battery support ring 82: Elevated part 83: shell fixing cylinder 84: Shell fixing screw 86:Battery cover 87: Cover mounting screw 90: Refrigerator 91: Shelves on the door 92: bottom 100: Inventory management equipment

FIG. 1 is a longitudinal sectional view of an inventory management device according to Embodiment 1. FIG. Fig. 2 is a plan view of a case where the mounting table of the inventory management device is a square plan view. Fig. 3 is a plan view of a case where the mounting platform of the inventory management device is rectangular in plan view. Fig. 4 is a top view of a mounting base of the inventory management device in a case where the top view is circular. Fig. 5 is a diagram showing a door rack of a refrigerator provided with an inventory management device. Fig. 6 is a longitudinal sectional view of an inventory management device installed in a door rack of a refrigerator. FIG. 7 is a longitudinal sectional view of an inventory management device according to Embodiment 2. FIG. 8 is a vertical cross-sectional view in a case where the bottom surface of the support guide of the inventory management device is a curved surface. Fig. 9 is an S-S section in Fig. 7 and Fig. 8, and is a cross-sectional view in the case where the cross-section of the support guide is circular. Fig. 10 is an S-S section in Fig. 7 and Fig. 8, and is a cross-sectional view in the case where the cross-section of the support guide is cross-shaped. Fig. 11 is an S-S section in Fig. 7 and Fig. 8, and is a cross-sectional view in the case where the cross-section of the support guide is star-shaped. FIG. 12 is a vertical sectional view of an inventory management device according to Embodiment 3. FIG. FIG. 13 is a longitudinal sectional view of an inventory management device according to Embodiment 4. FIG. Fig. 14 is a longitudinal sectional view of a portion of the upper part secured to the lower part of the inventory management device. Fig. 15 is a longitudinal sectional view of a portion of the upper part fixed to the lower part of the inventory management device. FIG. 16 is a perspective view of an inventory management device according to Embodiment 5. FIG. Fig. 17 is a sectional view of XVII-XVII in Fig. 16 . Fig. 18 is a perspective view of an inventory management device according to Embodiment 6. Fig. 19 is a sectional view taken along line XIX-XIX of Fig. 18 .

P: drink container

1: Carrying table

1C: centroid

3: Item sensor

4: Wireless transmitter

11: Translucent part

12: Through hole

13: Translucent film

31: Luminous department

32: Light receiving part

33: Detection Department

100: Inventory management equipment

Claims (8)

An inventory management device comprising: a loading table for loading items; and an item sensor to determine whether an item is placed on the mounting table, The mounting table has a light-transmitting portion that transmits light, This item sensor has: a light-emitting part that emits light toward the light-transmitting part; a light-receiving part that receives light from the light-transmitting part; and The detecting unit detects the information of the light received by the light receiving unit. The inventory management device according to claim 1, further comprising a wireless transmitter for transmitting the result of judgment by the item sensor. The inventory management device according to claim 1 or 2, wherein the light-transmitting portion is located outside the centroid of the upper surface of the mounting table. The inventory management device according to claim 3, wherein the light-transmitting portion is located on the upper surface of the mounting table at a position between 10 mm and 70 mm from the centroid. The inventory management device according to any one of claims 1 to 4, further comprising: The upper part has the loading table; a weight sensor bearing the upper part; and the lower part, which is equipped with the weight sensor, The lower part has a cylindrical body, The upper part has a guide portion guided by the cylindrical body, The upper end of the cylindrical body is not in contact with the upper member. An inventory management device comprising: upper part; a weight sensor bearing the upper part; and the lower part, which is equipped with the weight sensor, The lower part has a cylindrical body, The upper part has: a loading table for loading items; and a guide portion which is guided by the cylindrical body, The upper end of the cylindrical body is not in contact with the upper member. The inventory management device according to claim 5 or 6, wherein the distance between the upper end of the cylindrical body and the part of the upper side member opposite to the upper end of the cylindrical body is larger than the distance between the cylindrical body and the guide part The distance between them is large. The inventory management device according to any one of claims 5 to 7, wherein the distance between the lower end of the guide part and the part of the lower part opposite to the lower end of the guide part is larger than the distance between the cylindrical body and the The distance between the guide parts is large.

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