Scale

Abstract

To provide a scale that prevents a deterioration in weighing accuracy due to entry of a foreign substance below a weighing bench.SOLUTION: A scale is provided which has a weighing bench on which an object to be weighed is placed, and legs that are arranged below the weighing bench to support the weighing bench and placed on the floor surface. A projection projecting downward is provided on a side edge part of the weighing bench along the side edge part, and the projection makes the entry height of a space between the weighing bench and the floor surface lower than the height of a center part of the space. Since the projection arranged at the entry of the space below the weighing bench projects downward, the entry of the space below the weighing bench has the lowest height and the center part has a higher height, which can prevent a foreign substance entering below the weighing bench from interfering with the weighing bench to deteriorate weighing accuracy.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a weighing scale, and more particularly to a weighing scale that prevents deterioration of weighing accuracy due to the intrusion of foreign matter under the weighing platform. [Background technology]

[0002] For example, as shown in Patent Document 1, there are large scales such as wheelchair scales and medical scales. The scale body is thin and has short legs, making it low so that the person being weighed can stand on the scale platform without having to raise their feet high. This creates a problem where foreign objects such as pens get into the gap between the scale platform and the floor and come into contact with the underside of the platform, distorting the weighing result. A similar problem can occur with small scales for home use, but because the scale platform itself is light and small, if an abnormality is detected, the scale platform can be lifted up and checked, allowing the cause of the abnormality to be discovered.

[0003] Furthermore, for example, in Patent Document 2, a sensor is provided that measures the distance between the floor surface and the bottom of the weighbridge, and when an abnormality occurs, the sensor detects it and generates an error state to notify the user. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3234894 [Patent Document 2] Patent Publication No. 2010-25596 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with large scales such as those in Patent Document 1, it is difficult to notice and remove foreign objects such as pens or needle caps that have rolled and fallen into the space under the weighing platform.When a load is applied to the weighing platform, the platform bends downward, and if the foreign object interferes with the platform, a weighing error occurs.

[0006] Furthermore, Patent Document 2 requires a sensor for detecting errors and a means for reporting errors, which makes the structure complicated, and therefore a simpler mechanism for suppressing deterioration in weighing accuracy is desired.

[0007] The present invention has been made in consideration of the above problems, and provides a weighing scale that suppresses deterioration of weighing accuracy due to the intrusion of foreign matter under the weighing platform. [Means for solving the problem]

[0008] In order to solve the above problems, the disclosed weighing scale has a weighing platform on which the object to be weighed is placed, and legs that are positioned below the weighing platform to support the weighing platform and are placed on the floor, and a convex portion that protrudes downward is provided around the side edge of the weighing platform, and the convex portion makes the height of the entrance to the space between the weighing platform and the floor lower than the height of the center of the space.

[0009] According to this embodiment, the space under the weighing platform is lowest at the entrance and highest at the center, preventing foreign matter that gets under the weighing platform from interfering with the weighing platform and deteriorating weighing accuracy.

[0010] In one embodiment, the sum of the amount of deflection of the weighbridge when the maximum measurable load is applied and the height of the entrance to the space is smaller than the height of the center of the space. In this embodiment, even when the maximum measurable load is applied to the weighbridge, the height of the center of the space below the weighbridge is higher than the height of the entrance to the space below the weighbridge. Even if a foreign object gets under the weighbridge, the foreign object will not interfere with the weighbridge or affect the weighing value. [Effects of the Invention]

[0011] According to the above configuration, it is possible to provide a weighing scale that suppresses deterioration of weighing accuracy due to the intrusion of foreign matter under the weighing platform. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view of a weight scale according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] 3 is an end view of the weighing scale taken along line VV in FIG. 2. FIG. [Figure 6] 6 is an end view of the weighing scale taken along line VI-VI in FIG. 3. [Figure 7] 7 is a cross-sectional view of the weighing scale taken along line VII-VII in FIG. 3. [Figure 8] This shows the weighing platform of the same scale under load, corresponding to Figure 6. [Figure 9] 6 is a cross-sectional view of a conventional weighing scale for comparison, corresponding to FIG. [Figure 10] 7 is a cross-sectional view of a conventional weighing scale for comparison, corresponding to FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Specific embodiments of the present invention will be described below with reference to the drawings. The embodiments are illustrative and do not limit the invention, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention. In addition, in the following description of the embodiments and modifications, the same components are designated by the same reference numerals, and duplicated descriptions will be omitted as appropriate.

[0014] (Weight scale) A weight scale 1 according to a preferred embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 shows a perspective view of the weight scale 1 according to a preferred embodiment of the present invention. FIG. 2 shows a front view of the weight scale 1. FIG. 3 shows a plan view of the weight scale 1.

[0015] As shown in Figures 1 to 3, weighing scale 1 is a large-sized weighing scale for medical use, such as a wheelchair weighing scale. It has a weighing platform 20 on which the load of the object to be weighed (person to be weighed) is placed, and legs 8 located at the four corners below weighing platform 20, and is used by placing legs 8 on floor surface FL. Legs 8 create a gap between weighing platform 20 and floor surface FL. This gap is called the under-platform space S.

[0016] The weighing platform 20 has a wide top surface that serves as the tread, is thin overall, and is placed close to the floor surface FL so that the person to be weighed can safely step on it. Handrails 4 are installed on the left and right side edges of the weighing platform 20 so that a person to be weighed who has difficulty walking can hold on to them and stand up. Gently sloping slopes 3 that continue to the floor surface FL are installed on the front and rear side edges of the weighing platform 20 so that a person to be weighed who is in a wheelchair can also step onto the weighing platform 20 while remaining in their wheelchair. A display unit 5 is installed on the weighing platform 20, and the load applied to the weighing platform 20 is displayed on the display unit 5 as the weighing result.

[0017] The weighing scale 1 is configured to prevent foreign objects, such as pens or needle caps, from rolling into the space S under the platform through gaps under the sides of the weighing platform 20 and interfering with the weighing platform 20 when it bends downward during weighing, causing errors in the weighing value (details will be described later).

[0018] The configuration of the weighing scale 1 will be described in detail. Figure 4 is a partially exploded perspective view of the weighing scale 1. The weighing scale 1 is configured symmetrically except for the display unit 5, and in Figure 4, only the right region of the weighing scale 1 is shown exploded, with the left region not shown exploded.

[0019] In addition to the weighing platform 20, handrails 4, display unit 5, and legs 8, the weighing scale 1 also includes an upper cover member 80, a load sensor 40, a fixing plate 60, and a lower cover member .

[0020] The weighbridge 20 has a rectangular shape in plan view and a flat shape with a very low height compared to its size. The weighbridge 20 has base beams 21 that form the left and right sides of the weighbridge 20, multiple beams 23 fixed across the left and right base beams 21, and a load plate 22 that is positioned and fixed between the left and right base beams 21.

[0021] The base beam 21 has no bottom, and the front and rear end faces are open. It mainly consists of left and right sides and a ceiling, and each side is made up of hollow rectangular timbers or flat plates welded together. This forms an internal space (hereinafter referred to as the storage space SP) that is recessed from below. The load sensor 40 is stored in this storage space SP.

[0022] The beams 23 are made of hollow rectangular beams, and multiple beams 23 are welded to the bottom surfaces of the left and right base beams 21 to connect them to the left and right base beams 21.

[0023] Load plate 22 is placed on and fixed to beam 23. Slope 3 is configured as part of load plate 22. Because beam 23 is fixed to the bottom surface of base beam 21, load plate 22 is also fixed below base beam 21, allowing the person to step onto weighing platform 20 without having to lift their feet very high.

[0024] Load sensors 40, which are strain-generating bodies, are connected to the lower four corners of the weighbridge 20. The load sensors 40 are interposed between the weighbridge 20 and the legs 8, and the weighbridge 20 is supported by the load sensors 40.

[0025] The top cover member 80 is a member that conceals the base beam 21 and internal mechanisms such as a computing device (not shown) attached to the base beam 21. By covering the base beam 21 from above and attaching it to the base beam 21, the top cover member 80 conceals the base beam 21 and internal mechanisms from the outside. The handrails 4 and the display unit 5 are erected on the top cover member 80, and the top cover member 80 including the handrails 4 and the display unit 5 is attached to the load sensor 40 via the weighbridge 20. The top cover member 80 is supported by the base beam 21, spaced apart from the floor surface FL and in contact only with the weighbridge 20, and does not interfere with the load sensor 40. Therefore, even if the person to be weighed standing on the weighbridge 20 grabs onto or leans against the handrails 4, the weighing value is not affected.

[0026] The load sensor 40 calculates the load as a change from a predetermined standard state. That is, when nothing is placed on the weighbridge 20, the load acting as a weight when placed on the weighbridge 20 is detected by the load sensor 40, and the difference value is converted into a weight and displayed on the display unit 5. If the person to be weighed is in a wheelchair, it is possible to store the weight of the wheelchair in advance and calculate the difference value to display the weight of the person to be weighed.

[0027] 5 is a vertical end view of part A taken along line VV in FIG. 2. The strain sensor 40 is a substantially rectangular parallelepiped body that is long in one direction, and is disposed in the accommodation space SP inside the base beam 21, below the upper surface of the base beam 21, with its longitudinal direction aligned with the base beam 21. One end of the strain sensor 40 is a movable end 41, and the other end is a fixed end 42, with the fixed end 42 facing the end of the base beam 21. A pair of eyeglass-shaped through-holes is drilled on the side of the load sensor 40, and a strain gauge (not shown) is affixed to the thin-walled portion where the through-hole is provided. When the fixed end 42 is fixed and a load is applied to the movable end 41, the thin-walled portion deforms, and this deformation is converted into an electrical signal by the strain gauge and then into a weight value.

[0028] A screw hole (not shown) is provided on the upper surface of the fixed end 42, and the fixed end 42 is fastened to the bottom surface of the base beam 21 with a bolt (not shown) sandwiching a flat intermediate member 46 therebetween.

[0029] As mentioned above, a storage space SP is provided below the base beam 21 to accommodate the load sensor 40. The load sensor 40 is contained in the storage space SP and fixed to the underside of the base beam 21, supporting the base beam 21 from below. An intermediate member 46 is interposed between the load sensor 40 and the base beam 21, so that the load sensor 40 does not come into contact with the base beam 21. By providing the storage space SP, which is deeply recessed upward from the bottom surface, in the base beam 21 and fixing the load sensor 40 to the upper surface of the storage space SP, the fixing surface between the base beam 21 and the load sensor 40 is raised, and the position of the load plate 22 fixed to the base beam 21 is relatively lowered. The upper surface of the load plate 22 is the tread surface of the person to be weighed, and by positioning the tread surface closer to the floor surface FL, safety is enhanced.

[0030] A flat fixed plate 60 is fastened to the bottom surface of the movable end 41 of the load sensor 40 by a fixing member (not shown). Legs 8 that come into contact with the floor surface FL are arranged on the bottom surface of the fixed plate 60. A threaded portion is provided at the tip of the leg 8, and by rotating the leg 8, the amount of protrusion from the fixed plate 60 changes. By rotating the leg 8, the amount of protrusion of the leg 8 can be adjusted, and the weighbridge 20 can be adjusted so that it is horizontal.

[0031] The lower cover member 70, like the upper cover member 80, covers the base beam 21 from below, concealing the base beam 21 from the outside. The lower cover member 70 is attached to the bottom surface of the girder 23 with a fixing member (not shown). The load sensor 40 is disposed between the base beam 21 and the girder 23, and does not come into contact with either of them. The lower cover member 70 has insertion holes 72 formed therein corresponding to the placement of the legs 8, and the legs 8 are placed by being inserted through the insertion holes 72.

[0032] (Layout and spacing) The weighing scale 1 is configured to prevent foreign objects from entering the under-platform space S under the weighing platform 20 and interfering with the weighing platform 20, resulting in adverse effects such as a deterioration in weighing accuracy. This will be explained in detail using the drawings. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 3. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 3. See also the enlarged view of part A in FIG. 2 and the exploded perspective view in FIG. 4. In FIG. 6, the upper cover lids 81 (see FIG. 3) provided on both ends of the upper cover member 80 are shown removed.

[0033] As shown in the exploded perspective view of FIG. 4 and the cross-sectional view of FIG. 6, the lower cover member 70 is made of a generally rectangular metal flat plate that is long in one direction and is folded multiple times along the longitudinal direction to form linear protrusions 71 that protrude downward along the longitudinal edge of one long side. The lower cover member 70 is positioned so that its long sides are aligned with the left and right sides of the weighbridge 20 and so that the linear protrusions 71 are on the outside. When the lower cover member 70 is fastened to the bottom surface of the base beam 21, the linear protrusions 71 are positioned along the left and right side edges of the weighbridge 20 and protrude downward to come close to the floor surface FL. The linear protrusions 71 are positioned at the entrances to the left and right sides of the under-platform space S, and therefore narrow the entrances to the left and right sides of the under-platform space S (see FIG. 6).

[0034] As shown in FIG. 1, slopes 3 are provided on the front and rear sides of the weighing platform 20. The slopes 3 become lower from the inside to the outside of the weighing platform 20, and are closest to the floor surface FL at the outer end. To prevent weighing errors, the slopes 3 do not come into contact with the floor surface FL even at the outer end where they are positioned at the lowest. As shown in FIG. 7, the slopes 3 are arranged at the entrances to the front and rear sides of the under-platform space S. In other words, the slopes 3 narrow the entrances to the front and rear sides of the under-platform space S.

[0035] Here, the height of the entrance to the rectangular under-counter space S is defined as the entrance height T. Specifically, the entrance height of the left and right sides of the under-counter space S, which is the distance between the linear convex portion 71 and the floor surface FL, is defined as the first entrance height T1. The entrance height of the front and rear sides of the under-counter space S, which is the distance between the tip of the slope 3 and the floor surface FL, is defined as the second entrance height T2. The distance between the weighing platform 20 and the floor surface FL, which is the height of the space excluding the entrance portion of the under-counter space S, is defined as the distance D.

[0036] Because the weighing platform 20 is positioned close to the floor surface FL, the under-platform space S has an extremely low, extremely thin, and approximately rectangular parallelepiped shape. By placing the lower cover members 70 below the left and right side edges of the weighing platform 20, i.e., at the entrances to the left and right sides of the under-platform space S, the first entrance height T1 is smaller than the separation distance D by the amount of protrusion of the linear convex portions 71. Similarly, by providing slopes 3 on the front and rear sides of the weighing platform 20, the second entrance height T2 is smaller than the separation distance D by the amount of the slopes 3. The four sides that form the entrances to the under-platform space S are configured to be lower than the height of the other areas of the under-platform space S, and the side edges that form the entrances of the under-platform space S are the lowest.

[0037] In this way, in the weighing scale 1, by providing a linear protrusion 71 and a slope 3 on the weighing platform 20, protrusions that protrude downward are provided around the side edges of the weighing platform 20, and the height of the entrance to the under-platform space S is configured to be lower than the height of the center of the under-platform space S.

[0038] When the entrance to the under-counter space S is lowered, the inner space of the under-counter space S (the space other than the entrance) becomes relatively higher. In the under-counter space S, a difference in height is formed so that the entrance is the lowest (narrowest) and other areas are relatively higher (wider). This prevents the foreign object from interfering with the weighing platform 20 in the under-counter space S, even if a foreign object smaller than the entrance height T enters the under-counter space S. In other words, in the weighing scale 1, the entry of large foreign objects into the under-counter space S is prevented at the entrance, and small foreign objects that pass through the entrance do not interfere with the weighing platform 20 due to the difference in height in the under-counter space S.

[0039] (Action and effect) For example, compared to using a shielding mechanism that shields the entrance to the under-table space S and comes into contact with the floor surface FL to completely shield foreign objects, the following advantages are obtained.

[0040] First, when the weighing platform 20 is inverted and rolled on wheels attached to the side to transport the weighing scale 1, for example, there is a gap between the entrance of the under-scale space S and the floor surface FL. Therefore, an operator can easily lift the weighing platform 20 by inserting their fingers through the entrance of the under-scale space S and hooking their fingers on the linear protrusions 71. Similarly, when an operator hooks their hands on the linear protrusions 71 to lower the inverted weighing platform 20, the operator's fingers are less likely to be pinched between the weighing platform 20 and the floor surface FL. For this reason, the entrance height T is preferably about the thickness of one finger. Specifically, the entrance height T is preferably 10 mm to 15 mm, and more preferably 11 mm to 13 mm. Furthermore, because there is a gap at the entrance, the linear protrusions 71 do not come into contact with the floor surface FL and damage the floor surface FL when the weighing platform 20 is raised or lowered. In addition, since the entrance to the under-table space S is low, the worker can see any foreign object that hits the linear protrusion 71 and stops, such as a dropped pen, and can remove it as soon as he or she finds it.

[0041] Figure 8 shows the weighing scale 1 with a load applied to the weighing platform 20. Figure 8 corresponds to Figure 6. The weighing platform 20 is a thin rectangular parallelepiped with a wide tread surface relative to its height, and is supported only by the strain-generating bodies of the load sensors 40 located at the four corners, so it is prone to bending downward when a load is applied to the tread surface. In this case, the following equation holds for the weighing scale 1 within the measurable range. Inlet height T + deflection ST < initial separation distance D0 The initial separation distance D0 indicates the separation distance between the weighbridge 20 and the floor surface FL, other than the side edge of the weighbridge 20 (other than the entrance to the under-platform space S), when the weighbridge 20 is in an unloaded state.

[0042] When the maximum weighing value (maximum measurable load) of weighing scale 1 is applied to weighing platform 20, the amount of deflection of weighing platform 20 becomes maximum. Since the above formula holds within the measurable range of weighing scale 1, the above formula holds even when the initial separation distance D0 is the smallest and the amount of deflection ST is the largest. Inlet height T < minimum initial clearance distance - maximum deflection That is, when the maximum anticipated load is applied to the weighbridge 20 at the position where the distance between the weighbridge 20 and the floor surface FL is the smallest and the weighbridge 20 bends downward to the maximum, the distance between the weighbridge 20 and the floor surface FL is minimum. The entrance height T is smaller than this minimum distance. Therefore, foreign matter that enters the under-platform space S from the entrance does not interfere with the weighbridge 20 and does not distort the weighing value.

[0043] As shown in Figure 8, foreign matter G1 larger than the first entrance height T1 is blocked by the linear protrusion 71 and cannot enter the under-table space S. Foreign matter G2 smaller than the first entrance height T1 can pass under the linear protrusion 71 and enter the under-table space S, but does not interfere with the most warped weighing platform 20 and therefore does not adversely affect the weighing value (see foreign matter G2' indicated by the dotted line in Figure 7).

[0044] Similarly, as shown in Figure 7, foreign object G3 larger than second entrance height T2 is blocked by the tip of slope 3 and cannot enter under-platform space S. Foreign object G4 smaller than second entrance height T2 can enter under-platform space S from below slope 3, but does not interfere with the most deflected weighing platform 20 and therefore does not adversely affect the weighing value (see foreign object G4' indicated by the dotted line in Figure 3). Regardless of the size of the foreign object, deterioration of weighing accuracy due to foreign objects entering under the weighing platform 20 can be suppressed.

[0045] Downward protruding convex portions (linear convex portions 71 and slopes 3) are provided around the side edges of the weighing platform 20, and the height of the entrance to the space S under the platform is configured to be lower than the height of the center of the space S under the platform, thereby suppressing interference between foreign objects and the weighing platform and preventing a deterioration in weighing accuracy.

[0046] By providing protrusions, such as linear protrusions 71 and slopes 3, that protrude below the floor surface of the weighbridge 20 around the side edges of the weighbridge 20, it is possible to prevent foreign objects from entering the space S below the weighbridge. In this case, there are no restrictions on the shape of the protrusions, but it is preferable that the longitudinal cross section has a triangular or semicircular shape that protrudes downward, like the linear protrusions 71, so that an operator can easily hook their fingers on it. However, the linear protrusions 71 may be a suspended wall that extends vertically downward and is provided on the side of the weighbridge 20.

[0047] (Compared to conventional products) The above-mentioned effects of the weighing scale 1 will be explained in comparison with conventional products. Figure 9 is a cross-sectional view of a conventional weighing scale 901, and corresponds to Figure 6. Figure 10 is a cross-sectional view of a conventional weighing scale, and corresponds to Figure 7.

[0048] As shown in Figure 9, a conventional weighing scale 901 does not have a lower cover member 70, and the weighing platform 920 does not have a linear protrusion 71. Because the weighing platform 920 (more specifically, hollow rectangular beam 923) is fixed to the bottom surface of the base beam 921, the height of the under-platform space S900 below the weighing platform 920 is constant between the entrance and the center. A distance D900 between the weighing platform 920 and the floor surface FL is the same as a first entrance height T901 of the under-platform space S900 (first entrance height T901 = distance D900).

[0049] The conventional weighing scale 901 does not have a linear protrusion 71, and a dropped pen or other foreign object G901 smaller than the first entrance height T901 rolls under the weighing platform 920 and enters the space S900 below the platform. When a load is applied to the weighing platform 920 and the weighing platform 920 bends, the bent weighing platform 920' and the foreign object G901' that has rolled into the space S900 below the platform interfere with each other, distorting the weighing value of the conventional weighing scale 901 and reducing the weighing accuracy.

[0050] The same applies to the entrances at the front and rear sides of the under-counter space S900 of the conventional weighing scale 901. As shown in Fig. 10, slopes 903 are provided on the front and rear sides of the weighing platform 920. The height of the under-counter space S900 below the weighing platform 920 is generally constant, and the distance D900 between the weighing platform 920 and the floor surface FL is also roughly the same as the second entrance height T902 of the under-counter space S900 (second entrance height T902 = distance D900). Therefore, foreign objects G903 smaller than the second entrance height T902 roll under the weighing platform 920 and enter the under-counter space S900. When a load is applied to the weighing platform 920 and the weighing platform 920 bends, the bent weighing platform 920 and the foreign object G903' that has rolled into the space S900 under the platform interfere with each other, causing the weighing value of the conventional weighing scale 901 to be out of sync and reducing the weighing accuracy.

[0051] Next, we will explain this using specific numerical values. It is assumed that both weighing scale 1 and conventional weighing scale 901 have a maximum measurable value of 150 kg, and that the deflection of weighing platform 20 and weighing platform 920 when the maximum measurable load is applied is 4 mm.

[0052] As an example, the first entrance height T1 of the weighing scale 1 is set to 11.4 mm, and the initial separation distance D0 is set to 20.6 mm. The minimum separation distance between the weighing platform 20 and the floor when the maximum measurable load is applied is as follows: Minimum separation distance for scale 1 = 20.6 mm - 4 mm = 16.6 mm The maximum size of a foreign object that can enter the under-counter space S from the left and right sides is 11.4 mm, so even if a foreign object of the maximum size enters the under-counter space S, the gap between the weighing platform 20 at its maximum deflection and the foreign object will be 5.2 mm or more (16.6 mm - 11.4 mm = 5.2 mm). Therefore, even if a foreign object enters the under-counter space S, it will not interfere with the weighing platform 20 and will not affect the weighing accuracy of the weighing scale 1.

[0053] In contrast, in the conventional weighing scale 901, for example, if the distance D900 when no load is applied is 12.6 mm, the first entrance height T901 is also equal to the distance D900. The minimum distance between the weighing platform 20 and the floor when the maximum measurable load is applied is as follows: Minimum separation distance of conventional weighing scale 901 = 12.6 mm - 4 mm = 8.6 mm Foreign objects with a diameter of 12.6 mm or less can get into the under-platform space S900, so if, for example, a pen with a diameter of 10 mm gets into the under-platform space S900, when the maximum measurable load is applied to the weighing platform 920, the gap between the pen and the weighing platform 920 will be 1.4 mm short (8.6 mm - 10 mm = -1.4 mm). In this case, the bent weighing platform 920 will come into contact with the pen that has gotten into the under-platform space S900, causing an error in the weighing value of the conventional weighing scale 901.

[0054] The above describes preferred embodiments and modifications of the present invention, but the above embodiments are merely examples of the present invention, and these can be combined based on the knowledge of those skilled in the art, and such forms are also included in the scope of the present invention. [Explanation of symbols]

[0055] 1: Weight scale 8: Legs 20: Weighing platform FL: Floor surface S: Space under the table (space) T: Entrance height D: Separation distance

Claims

1. A weighing platform on which an object to be weighed is placed; legs disposed below the weighing platform to support the weighing platform and to be placed on a floor surface; having A convex portion protruding downward is provided around a side edge of the weighing platform along the side edge, and the convex portion configures an entrance height of a space between the weighing platform and the floor surface to be lower than the height of a center part of the space. A weighing scale characterized by the above.

2. The weighing platform is configured so that the sum of the deflection amount of the weighing platform when the maximum measurable load is applied and the height of the entrance of the space is smaller than the height of the center of the space.

2. The weighing scale according to claim 1 .

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