JP2020041911A - Weighing device - Google Patents

Abstract

To provide a weighing device capable of suppressing communication failure more than before when a load signal of a load detector is transmitted to an indicator by radio.SOLUTION: A barrier-free scale 100 as a weighing device includes: a metal housing 10; and a radio communication substrate which is stored in the housing 10, and which transmits a load signal of a load measurement part 30C to an indicator outside the housing 10 by radio. A facing region 30D of the housing 10, which faces the radio communication substrate, is constituted in a manner to transmit a radio wave used for radio communication of the load signal.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a weighing device.

  2. Description of the Related Art A weighing device that wirelessly transmits a load signal of a load detector to an indicator by using a wireless communication function without using wiring is known.

  For example, Patent Document 1 discloses a receiving device including a display for displaying load data using a wireless communication with a load signal of a load detector connected to a hook for measuring a load of a suspended load of a crane. Has been proposed.

  Patent Document 2 proposes a weight measurement system that transmits a signal of a detector that detects the weight of a subject to be measured to an external device including a display for displaying the weight using wireless communication. I have.

JP-A-8-127490 JP 2012-57969 A

  However, in the conventional example, the problem of communication failure when wirelessly transmitting the load signal of the load detector to the indicator has not been sufficiently studied.

  An aspect (aspect) of the present disclosure has been made in view of such circumstances, and a weighing device capable of reducing a communication failure when a load signal of a load detector is wirelessly transmitted to an indicator as compared with the related art. I will provide a.

  In order to solve the above problem, a weighing device according to an embodiment of the present disclosure includes a metal housing, which is housed in the housing, and wirelessly transmits a load signal of a load detector to an indicator outside the housing. And a wireless communication substrate for the load signal, and a facing region of the housing facing the wireless communication substrate is configured to transmit radio waves used for wireless communication of the load signal.

  An aspect of the present disclosure has an effect that a communication failure when wirelessly transmitting a load signal of a load detector to an indicator can be reduced as compared with the related art.

Drawing 1 is a figure showing an example of the measuring device of an embodiment. FIG. 2 is a block diagram illustrating an example of a control system of the weighing device according to the embodiment. FIG. 3 is a diagram illustrating an example of a mounting table of the weighing device according to the embodiment. FIG. 4 is a diagram illustrating an example of a base of the weighing device according to the embodiment. FIG. 5A is a diagram illustrating an example of a facing region of a housing (mounting table) facing a wireless communication board of the weighing device according to the embodiment. FIG. 5B is a cross-sectional view taken along the line BB of FIG. 5A. FIG. 5C is a diagram illustrating an example of a wireless communication board of the weighing device according to the embodiment.

  The problem of communication failure when wirelessly transmitting the load signal of the load detector to the indicator was studied, and the following findings were obtained.

  Communication failures when wirelessly transmitting the load signal from the load detector to the indicator include communication failures caused by picking up radio waves from external devices such as mobile phones and the wiring connecting the devices and components of the weighing device. It is considered that there is a communication failure caused by shielding radio waves used for wireless communication of the load signal.

  Here, the former communication failure can be appropriately mitigated by covering all wiring connecting the devices and components of the weighing device with, for example, a metal housing.

  However, in this case, for example, since the wireless communication board electrically connected to the load detector by wiring is housed in a metal housing, the radio wave used for wireless communication of the load signal of the load detector is used. May be shielded by the housing. Then, it becomes difficult for such a radio wave to reach the indicator outside the housing, so that the load data of the load detector may not be properly displayed on the indicator of the indicator.

  Accordingly, the present inventors have conducted intensive studies, and as a result, the above-described communication was performed by configuring the facing area of the housing facing the wireless communication board so that radio waves used for wireless communication of the load signal were transmitted. The present inventor has found that the problem of the obstacle can be reduced, and arrived at one embodiment of the present disclosure described below.

  That is, the weighing device according to the first embodiment of the present disclosure includes a metal housing, a wireless communication board housed in the housing, and wirelessly transmitting a load signal of the load detector to an indicator outside the housing. And a region facing the wireless communication substrate is configured so that a radio wave used for wireless communication of the load signal is transmitted.

  According to such a configuration, the weighing device of this aspect can reduce a communication failure when wirelessly transmitting the load signal of the load detector to the indicator, as compared with the related art.

  Specifically, when the wireless communication board electrically connected to the load detector by wiring is housed in a metal housing, the radio wave used for wireless communication of the load signal of the load detector is transmitted to the housing. May be shielded by the body. However, in the weighing device according to the present aspect, such a possibility can be reduced because the above-described radio wave is transmitted through the opposing region of the housing that faces the wireless communication board.

  According to a weighing device of a second aspect of the present disclosure, in the weighing device of the first aspect, a resin member that covers the through hole of the housing may be provided in the facing region.

  According to this configuration, in the weighing device of this aspect, the through-hole covered with the resin member can become a path of a radio wave used for wireless communication of the load signal, so that the radio wave may be shielded by the housing. Can be reduced.

  The weighing device according to a third aspect of the present disclosure is the weighing device according to the second aspect, wherein the wireless communication board includes a plurality of volumes for adjusting respective sensitivities of the plurality of load detectors, and the through-hole includes a plurality of the plurality of through-holes. A first through hole corresponding to the volume may be provided.

  According to this configuration, the weighing device of the present embodiment can adjust the sensitivity of the load detector with respect to the weighing device in a substantially completed state before the resin member is arranged. That is, since the resin member is light, even if the resin member is not disposed, it does not affect the accuracy of the sensitivity adjustment of the load detector.

  In addition, the weighing device of this aspect, for example, adjusts the respective sensitivities of the plurality of load detectors by aggregating a plurality of volumes for adjusting the respective sensitivities of the plurality of load detectors on the wireless communication board. The efficiency of the work of adjusting the sensitivity of the load detector can be improved as compared with a case where the volume for the load is distributed in the housing. Also, by integrating a plurality of volumes on the wireless communication board, the number of components can be reduced.

  A weighing device according to a fourth aspect of the present disclosure is the weighing device according to the second aspect, wherein the wireless communication board includes a connector for performing maintenance of the weighing device, and the through-hole includes a second through-hole corresponding to the connector. You may.

  According to such a configuration, the weighing device of this aspect can easily access the connector for performing maintenance of the weighing device simply by removing the resin member.

  According to a weighing device of a fifth aspect of the present disclosure, in the weighing device of the second aspect, the resin member may be a transparent member.

  According to such a configuration, in the weighing device of this aspect, various information of the weighing device can be easily obtained by configuring the resin member with the transparent member.

  That is, in the weighing device according to the sixth aspect of the present disclosure, in the weighing device according to the fifth aspect, the wireless communication board includes a light source indicating a wireless communication state or a power supply state, and the through-hole corresponds to the third light source. A through hole may be provided.

  According to such a configuration, the weighing device of this aspect can easily visually recognize the light source indicating the wireless communication state or the power supply state of the weighing device through the third through hole covered with the transparent resin member.

  Further, the weighing device according to a seventh aspect of the present disclosure is the weighing device according to the fifth aspect, further comprising a level device housed in a housing near the wireless communication board, wherein the through hole has a fourth through hole corresponding to the level device. A hole may be provided.

  According to such a configuration, the weighing device of this aspect can easily visually recognize the leveler through the fourth through hole covered with the transparent resin member.

  The weighing device according to an eighth aspect of the present disclosure is the weighing device according to any one of the second to seventh aspects, wherein the housing includes a mounting table configured by a stacked body of the first metal member and the second metal member. The through hole is formed in the second metal member of the laminate within the opening of the first metal member of the laminate, and the resin member contacts the second metal member within the opening to cover the through hole. are doing.

  According to such a configuration, the metering device of this aspect can appropriately hold the resin member by the concave portion including the opening of the first metal member and the second metal member.

  The weighing device according to an eighth aspect of the present disclosure is the weighing device according to the second aspect, wherein the wireless communication board includes a plurality of volumes for adjusting the sensitivities of the plurality of load detectors, a connector for performing maintenance on the weighing device, Further, two or more components of the light source indicating the state of the wireless communication or the status of the power supply may be provided, and a plurality of through holes corresponding to the two or more components may be formed in the housing.

  According to this configuration, the weighing device of this aspect can perform operations using these components continuously or simultaneously by integrating two or more components of the volume, the connector, and the light source on the wireless communication board. Therefore, for example, the efficiency of such work can be improved as compared with a case where such components are dispersedly arranged in the housing. Further, by integrating two or more components of the volume, the connector, and the light source on the wireless communication board, the number of components can be reduced.

  A weighing device according to a ninth aspect of the present disclosure is the weighing device according to the eighth aspect, further comprising a level which is housed in a housing near the wireless communication board, and a through hole corresponding to the level is formed in the housing. You may.

  According to this configuration, the weighing device according to the present aspect can check the level at the same time as the operation using the two or more parts by housing the level in the housing near the wireless communication board. Therefore, for example, the efficiency of such work can be improved as compared with a case where the level is stored in a housing at a position away from the wireless communication board.

  Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Each of the embodiments described below is an example of each of the above aspects. Therefore, the shapes, materials, components, and the arrangement positions and connection forms of the components shown below are merely examples, and do not limit the above embodiments unless otherwise described in the claims. . In addition, among the following components, components not described in the independent claims that indicate the highest concept of each aspect described above are described as arbitrary components. Also, in the drawings, the description of the same reference numeral may be omitted. In the drawings, each component is schematically shown for easy understanding, and shapes and dimensional ratios may not be accurately displayed.

(Embodiment)
[Device configuration]
Drawing 1 is a figure showing an example of the measuring device of an embodiment. FIG. 1 is a perspective view of a barrier-free scale 100 as an example of a weighing device according to the present embodiment, which allows a user to measure weight while sitting on a wheelchair.

  For convenience, in FIG. 1 (the same applies to FIGS. 3 and 4), the front, rear, left and right are taken as shown in FIG. 1, and a wheelchair (not shown) enters from “behind” the barrier-free scale 100, and The following configuration of the barrier-free scale 100 will be described as exiting from “before” 100.

  As shown in FIG. 1, the barrier-free scale 100 includes a metal housing 10.

  The mounting table 30 of the housing 10 includes a load measuring section 30C, a right protruding section 30R, and a left protruding section 30L. In the barrier-free scale 100 of the present embodiment, the right protruding portion 30R and the left protruding portion 30L are formed integrally with the load measuring unit 30C of the mounting table 30, for example, by bending an appropriate metal member. I have. Details of the configuration of the mounting table 30 will be described in embodiments.

  Here, the load measuring unit 30C is set to a size such that the front wheel and the rear wheel of the wheelchair can be mounted. That is, in the barrier-free scale 100, the weight of the user who is in the wheelchair is measured by placing the front wheel and the rear wheel of the wheelchair on the load measuring unit 30C of the mounting table 30.

  The right protruding portion 30R and the left protruding portion 30L of the mounting table 30 are each formed so as to protrude upward from both left and right ends of the load measuring unit 30C in a rectangular shape. Therefore, a step of a predetermined length is formed between the load measuring unit 30C and the upper surface (horizontal surface) of the right protruding portion 30R, and between the load measuring unit 30C and the upper surface (horizontal surface) of the left protruding portion 30L. . Thus, when the wheelchair passes over the load measuring unit 30C, the wheels of the wheelchair are prevented from coming off the load measuring unit 30C.

  The central portion of the upper surface of the left protruding portion 30L of the mounting table 30 corresponds to a facing area 30D of the housing 10 (the mounting table 30) facing the wireless communication board 11 (see FIG. 2). In the barrier-free scale 100 according to the present embodiment, the facing region 30D of the housing 10 is configured to transmit radio waves used for wireless communication of the load signal of the load detector.

  At the center of the upper surface of the right protruding portion 30 </ b> R of the mounting table 30, a battery cover 36 facing the dry battery stored in the housing 10 is provided. A power switch 37 and an AC jack 38 are provided on the side surface of the left protruding portion 30L. That is, the barrier-free scale 100 of the present embodiment is compatible with both power supplies of the AC adapter and the dry battery. The power switch 37 and the AC jack 38 are electrically connected to the wireless communication board 11 described above.

  The base 40 of the housing 10 includes a front slope 41F and a rear slope 41B. In the barrier-free scale 100 of the present embodiment, the front slope 41F and the rear slope 41B of the base 40 are formed integrally with the mold of the base 40, for example, by bending an appropriate metal member. . Details of the configuration of the base 40 will be described in the embodiments.

  The rear slope 41B is a member that forms a ramp between the rear end of the load measuring unit 30C and the floor surface 50 for the wheelchair to enter the load measuring unit 30C.

  A right protruding portion 30R and a left protruding portion 30L extending perpendicular to the rear slope 41B are provided on both sides in the width direction of the rear slope 41B. Thereby, when the wheelchair passes on the rear slope 41B, the wheels of the wheelchair are prevented from coming off the rear slope 41B.

  As shown in FIG. 1, a predetermined step S is formed between the rear end of the load measuring unit 30C and the front end of the rear slope 41B. The presence of such a step S allows the user in the wheelchair to easily recognize that the rear wheel of the wheelchair has completely got on the load measuring unit 30C. Weighing is suppressed.

  The front slope 41F is a member that forms a ramp between the front end of the load measuring unit 30C and the floor 50 for the wheelchair to exit the load measuring unit 30C.

  A right protruding portion 30R and a left protruding portion 30L extending perpendicular to the front slope 41F are present on both sides in the width direction of the front slope 41F, respectively. Thus, when the wheelchair passes on the front slope 41F, the wheels of the wheelchair are prevented from coming off the front slope 41F.

  As described above, according to the barrier-free scale 100 of the present embodiment, the base 40 has a configuration in which the front slope 41F and the rear slope 41B are provided. The distance (height) between the measurement unit 30C and the floor 50 can be shortened (that is, the barrier-free scale 100 can be lowered). This makes it easier for the wheelchair to get into the load measuring unit 30C. Further, the barrier-free scale 100 can be configured to be small.

  As shown in FIG. 1, the barrier-free scale 100 is configured so that a right handrail 33R and a left handrail 33L can be additionally arranged as an option.

  The right handrail 33R is formed of, for example, a U-shaped pipe, and both ends of the pipe are appropriately fixed to the vicinity of both ends in the front-rear direction of the upper surface of the right protruding portion 30R (here, a pipe). Brackets and bolts).

  The left handrail 33L is formed of, for example, a U-shaped pipe, and both ends of the pipe are respectively provided with appropriate fixing members (here, pipes) near both ends in the front-rear direction of the upper surface of the left protruding portion 30L. Brackets and bolts).

  Note that the right handrail 33R and the left handrail 33L function as, for example, an auxiliary tool when the user moves the load measuring unit 30C of the mounting table 30.

  Further, as shown in FIG. 1, the barrier-free scale 100 includes a pair of front handles 34F and a rear handle 34B for transportation, and a front caster 35F and a pair of rear casters 35B1 and 35B2 for transportation. The front handle 34F is provided at an appropriate position in front of the upper surface of the right protrusion 30R, and the rear handle 34B is provided at an appropriate position behind the upper surface of the right protrusion 30R. The front caster 35F is provided at an appropriate position in front of the left protruding portion 30L so that the traveling direction of the wheel is in the front-rear direction. Each of the pair of rear casters 35B1 and 35B2 is provided side by side in a proper position behind the left protruding portion 30L such that the traveling direction of the wheels is in the front-rear direction.

  As described above, the barrier-free scale 100 of the present embodiment can stand the housing 10 in the upright posture by using the front handle 34F and the rear handle 34B by removing the right handrail 33R and the left handrail 33L. Then, since the housing 10 can be supported by the wheels of the front casters 35F and the rear casters 35B1 and 35B2, the barrier-free scale 100 can be easily transported.

  In particular, the barrier-free scale 100 of the present embodiment supports the casing 10 with the wheels of the front casters 35F and the two wheels of the rear casters 35B1 and 35B2. The stability when transporting the barrier-free scale 100 is improved as compared with the case where the casters are arranged at regular intervals in the front-rear direction.

[Control system]
FIG. 2 is a block diagram illustrating an example of a control system of the weighing device according to the embodiment. FIG. 2 shows a control block diagram of the barrier-free scale 100 and a control block diagram of the indicator 20 connected to the barrier-free scale 100 by a wireless line.

  The barrier-free scale 100 includes a load detector and a wireless communication board 11 housed in a housing 10. The wireless communication board 11 is a board for wirelessly transmitting a load signal of the load detector to the indicator 20 outside the housing 10. The load detector may have any configuration as long as it can detect the load of the object to be weighed (for example, a wheelchair, a person, or the like) on the housing 10 (the mounting table 30). As the load detector, for example, as shown in FIG. 2, a load cell LC or the like can be given.

  In the barrier-free scale 100 of the present embodiment, the wireless communication board 11 includes, in addition to the wireless communication module having an antenna, an amplifier for amplifying the output of the load cell LC and an A / D for A / D converting the output of the load cell LC. A converter and the like are provided. Since these electronic components are publicly known, detailed description will be omitted.

  Further, the wireless communication board 11 includes a volume for adjusting the sensitivity of the load cell LC, a connector for performing maintenance of the barrier-free scale 100, and a light source (for example, an LED lamp) indicating a wireless communication state and a power supply state. ) Is provided. In addition, inside the housing 10, for example, a horizontal unit, a dry cell, connection wiring, and the like are housed in addition to the wireless communication board 11 and the load cell LC. Details of these parts and members will be described in Examples.

  The indicator 20 includes a controller 21, a storage device 22, an operation device 23, and a display device 24.

  The controller 21 includes, for example, an interface circuit and an arithmetic circuit.

  The interface circuit has a function of transferring various signals and data among the wireless communication board 11, the storage device 22, the operation device 23, the display device 24, and the arithmetic circuit of the controller 21.

  The arithmetic circuit includes, for example, a microprocessor (CPU or MPU) and receives necessary signals via an interface circuit according to an instruction of a predetermined operation program stored in the storage device 22, and receives necessary data. It has a function of executing an operation based on the signals and data received from the storage device 22.

  The storage device 22 is configured by, for example, a memory (PROM or RAM), and has a function of storing a predetermined program and basic data for a long term, and temporarily storing various data and numerical values for calculation. Prepare.

  The operation device 23 includes, for example, operation switches, numerical keys, and the like, and is used for various operations such as a measurement start operation and a measurement end operation, a load detector sensitivity adjustment operation, a use mode switching operation, and a numerical value setting operation. Can be

  The display 24 is constituted by, for example, a liquid crystal display panel, and displays a measurement result and an input / output screen of various data.

  Here, as shown in FIG. 2, when the load signal of the load cell LC is wirelessly transmitted to the indicator 20, the barrier-free scale 100 of the present embodiment transmits radio waves used for wireless communication of the load signal of the load cell LC. , Through the opposing region 30 </ b> D of the housing 10.

  As described above, the barrier-free scale 100 of the present embodiment can reduce a communication failure when wirelessly transmitting the load signal of the load cell LC to the indicator 20 as compared with the related art.

  Specifically, when the wireless communication board 11 electrically connected to the load cell LC by the wiring is housed in the metal casing 10, the radio wave used for wireless communication of the load signal of the load cell LC is transmitted. There is a possibility of being shielded by the housing 10. However, in the barrier-free scale 100 of the present embodiment, the opposing area 30D of the housing 10 opposing the wireless communication board 11 is configured to transmit the above-described radio waves, so that such a possibility is reduced. be able to. In this case, the radio wave can also pass through a desired gap (not shown) between the metal member forming the mounting table 30 and the metal member forming the base 40.

(Example)
[Configuration of platform]
FIG. 3 is a diagram illustrating an example of a mounting table of the weighing device according to the embodiment. FIG. 3 is an exploded perspective view of a metal member constituting the mounting table 30 of the barrier-free scale 100.

  As shown in FIG. 3, the mounting table 30 is configured by a laminate of a first metal member 31 and a second metal member 32. Specifically, the back surfaces of the load measuring portion 31C, the right protruding portion 31R, and the left protruding portion 31L of the first metal member 31 respectively correspond to the load measuring portion 32C, the right protruding portion 32R, and the left protruding portion of the second metal member 32. The mounting table 30 is configured by being in contact with each of the front surfaces of the 32L.

  That is, the base material of the load measuring unit 30C of the mounting table 30 (see FIG. 1) is formed by contact between the back surface of the load measuring unit 31C of the first metal member 31 and the surface of the load measuring unit 32C of the second metal member 32. It is a laminated plate made of metal.

  The base material of the right protruding portion 30R (see FIG. 1) of the mounting table 30 is formed by contact between the back surface of the right protruding portion 31R of the first metal member 31 and the surface of the right protruding portion 32R of the second metal member 32. It is a metal laminate.

  The base material of the left protruding portion 30L of the mounting table 30 (see FIG. 1) is formed by contact between the back surface of the left protruding portion 31L of the first metal member 31 and the surface of the left protruding portion 32L of the second metal member 32. It is a metal laminate.

  Here, openings at the center of the upper surface of the right protruding portion 31R of the first metal member 31 and at the center of the upper surface of the right protruding portion 32R of the second metal member 32 are provided for attaching and detaching the dry battery to the battery holder. A1 and an opening A2 are provided. These openings A1 and A2 are covered by the battery cover 36 (see FIG. 1) when the barrier-free scale 100 is used.

  An opening A3 and a level holder H1 are provided at the center of the upper surface of the left protruding portion 31L of the first metal member 31. In addition, a through hole T of the housing 10 (the mounting table 30) is provided at the center of the upper surface of the left protruding portion 32L of the second metal member 32. The details of the opening A3, the level holder H1, and the through hole T will be described later.

  At the center of the side surface of the left protruding portion 31L of the first metal member 31, a cutout portion N1 for attaching a power switch 37 and an AC jack 38 (both shown in FIG. 1) is provided. Notches for attaching front casters 35F and rear casters 35B1 (both shown in FIG. 1) are respectively provided at the front end and the rear end of the side surface of left projection 31L of first metal member 31. N2 and N3 are provided respectively. Although not shown, a mounting hole or the like for mounting the rear caster 35B2 (see FIG. 1) is provided at the rear end of the upper surface of the left protruding portion 31L of the first metal member 31.

[Base configuration]
FIG. 4 is a diagram illustrating an example of a base of the weighing device according to the embodiment. FIG. 4 is a perspective view of a metal member constituting the base 40 of the barrier-free scale 100.

  As shown in FIG. 4, the base 40 has a rectangular annular and concave groove form formed by bending a metal member. More specifically, the grooved formwork includes a right grooved form FR and a left grooved form FL extending linearly in the front-rear direction on the left and right sides of the base 40, and a left-right direction on the front and back sides of the base 40, respectively. A front groove formwork FF and a rear groove formwork FB that extend linearly.

  Here, a pair of plate-shaped load cells LC1 and LC2 are fixed to respective bottom walls at both ends in the front-rear direction of the right grooved form frame FR by appropriate fixing members (for example, bolts or the like). A battery holder H2 is formed on the bottom wall at the center in the right groove form FR.

  A pair of plate-shaped load cells LC3 and LC4 are fixed to respective bottom walls at both ends in the front-rear direction of the left groove form FL with appropriate fixing members (for example, bolts). Further, near the center of the left groove form FL, the wireless communication board 11 indicated by a two-dot chain line is held by the upper surfaces of the inner wall and the outer wall.

  In the front groove form FF, by making the height of the inner wall of the front groove form FF higher than the height of the outer wall, the front slope 41F moves from the upper surface of the inner wall of the front groove form FF to the front floor 50. It extends diagonally downward so as to head. At this time, the inner wall of the front groove form FF and the front slope 41F may be integrally formed by bending a metal plate.

  In the rear groove form FB, by making the height of the inner wall of the rear groove form FB higher than the height of the outer wall, the rear slope 41B is moved from the upper surface of the inner wall of the rear groove form FB to the rear floor surface 50. It extends diagonally downward so as to head. At this time, the inner wall of the rear groove form FB and the rear slope 41B may be integrally formed by bending a metal plate.

  As described above, in the front groove form FF, the first cavity surrounded by the front slope 41F, the bottom wall, the inner wall, and the outer wall is formed. In the rear groove form FB, a second cavity surrounded by the rear slope 41B, the bottom wall, the inner wall, and the outer wall is formed. The first and second cavities pass through connection wiring between the load cells LC1 and LC2 and the wireless communication board 11, connection wiring between the dry battery in the battery holder H2 and the wireless communication board 11, and the like. Can be used as an area.

  As described above, in the barrier-free scale 100 of the present embodiment, all of the battery holder H2, the load cells LC1 to LC4, and the wireless communication board 11 are provided on the base 40. Therefore, the barrier-free scale 100 of the present embodiment, for example, is unlikely to cause the problem of interference between these connection wirings, and appropriately suppresses a decrease in the measurement accuracy due to such interference between the connection wirings. it can.

  Further, in the barrier-free scale 100 of the present embodiment, the connection wiring between the load cells LC1 and LC2 and the wireless communication board 11, the connection wiring between the dry battery in the battery holder H2 and the wireless communication board 11, and the like are described above. It passes through the first cavity and the second cavity. Therefore, the barrier-free scale 100 of the present embodiment reduces the possibility of the connection wiring picking up radio waves from an external device such as a mobile phone, as compared with a case where the connection wiring does not pass through the first cavity and the second cavity. be able to.

  Although illustration is omitted, in the barrier-free scale 100 of the present embodiment, members and the like necessary for weighing the measurement object (for example, a wheelchair, a person, and the like) on the mounting table 30 are appropriately provided.

  For example, an appropriate pressure transmitting member (for example, a rubber columnar member) is provided on each of the load cells LC1 to LC4 between the mounting table 30 and the base 40. Thereby, the load when the object to be measured is placed on the load measuring unit 30C of the mounting table 30 is appropriately transmitted to the load cells LC1 to LC4 via the pressure transmitting member.

  Further, between the mounting table 30 and the base 40, a suitable reinforcing member or the like (for example, a metal-made material) for suppressing the bending of the mounting table 30 when the object to be measured is mounted on the load measuring unit 30C of the mounting table 30 is provided. Plate-shaped member).

[Configuration of Wireless Communication Board and Its Peripheral]
FIG. 5A is a diagram illustrating an example of a facing area of a housing (mounting table) facing a wireless communication board of the weighing device according to the embodiment. FIG. 5A is a perspective view of the facing region 30 </ b> D of the housing 10 of the barrier-free scale 100. FIG. 5B is a cross-sectional view taken along the line BB of FIG. 5A. FIG. 5C is a diagram illustrating an example of a wireless communication board of the weighing device according to the embodiment. FIG. 5C is a perspective view of the wireless communication board 11 of the barrier-free scale 100.

  A resin member that covers the through hole T of the housing 10 is disposed in the facing region 30D of the housing 10. Accordingly, in the barrier-free scale 100 of the present embodiment, the through-hole T covered with the resin member can be a path for radio waves used for wireless communication of the load signal. Can be reduced.

  The resin member may have any configuration as long as it can cover the through hole T of the housing 10. For example, PET can be used as the base material of the resin member, but is not limited thereto. Further, the resin member may be a thin plate-like member having a thickness of about 0.2 mm, for example. However, this thickness is an example and is not limited to this example. Further, the resin member may be transparent or opaque. However, by forming the resin member with a transparent member, various information of the barrier-free scale 100 can be easily obtained. Details will be described later.

  In the barrier-free scale 100 according to the present embodiment, as shown in FIG. 3, the housing 10 includes a mounting table 30 configured by a laminate of a first metal member 31 and a second metal member 32. As shown in FIGS. 3, 5A and 5B, the through hole T is formed in the left protruding portion 32L of the second metal member 32 in the opening A3 of the left protruding portion 31L of the first metal member 31. The resin member 70 is in contact with the left protruding portion 32L of the second metal member 32 in the opening A3 so as to cover the through hole T.

  As described above, the barrier-free scale 100 of the present embodiment appropriately holds the resin member 70 by the recess formed by the opening A3 of the left protruding portion 31L of the first metal member 31 and the left protruding portion 32L of the second metal member 32. can do.

  Here, as shown in FIG. 5C, the wireless communication board 11 includes four volumes 12 for adjusting the sensitivities of the plurality of load cells LC1 to LC4. The through hole T includes four first through holes T1 corresponding to the four volumes 12, as shown in FIG. 5A.

  As described above, the barrier free scale 100 of the present embodiment can adjust the sensitivity of the load cells LC1 to LC4 with respect to the barrier free scale 100 in a substantially completed state before the resin member 70 is arranged. That is, since the resin member 70 is light, even if the resin member 70 is not disposed, the accuracy of the sensitivity adjustment of the load cells LC1 to LC4 is not affected. Further, the barrier-free scale 100 of the present embodiment integrates the four volumes 12 for adjusting the respective sensitivities of the four load cells LC1 to LC4 in the wireless communication board 11 so that, for example, the load cells LC1 to LC4 The efficiency of the sensitivity adjustment work of the load cells LC1 to LC4 can be improved as compared with the case where the volumes for adjusting the respective sensitivities are dispersed in the housing 10. In addition, by consolidating the four volumes 12 on the wireless communication board 11, the number of components can be reduced.

  5C, the wireless communication board 11 includes a connector 14 for performing maintenance of the barrier-free scale 100. The through hole T includes a second through hole T2 corresponding to the connector 14, as shown in FIG. 5A. Note that the barrier-free scale 100 does not include the indicator 20 as described above, and the indicator 20 is connected to the barrier-free scale 100 by a wireless line. Therefore, when performing maintenance of the barrier-free scale 100, an appropriate display or the like is connected using the connector 14.

  As described above, the barrier-free scale 100 of this embodiment can easily access the connector 14 for performing maintenance of the barrier-free scale 100 only by removing the resin member 70.

  Further, as shown in FIG. 5C, the wireless communication board 11 includes a pair of light sources 13 (for example, LED lamps) indicating a wireless communication state and a power supply state. For example, when the state of wireless communication is good, one of the pair of light sources 13 is turned on, while when the state of wireless communication is bad (that is, when a communication failure occurs), the light source 13 blinks. You may. Also, for example, when the power is on, the other of the pair of light sources 13 may be turned on, while when the power is off, the light source 13 may be turned off. The through hole T includes two third through holes T3 corresponding to the pair of light sources 13 as shown in FIG. 5A.

  As described above, the barrier-free scale 100 according to the present embodiment uses the pair of light sources 13 indicating the wireless communication state and the power supply state of the barrier-free scale 100 through the two third through holes T3 covered with the transparent resin member 70. Can be easily visually recognized.

  In addition, the barrier-free scale 100 includes a level unit 60 housed in the housing 10 near the wireless communication board 11, as shown in FIG. 5A. The through hole T includes a fourth through hole T4 corresponding to the level unit 60.

  As described above, the barrier-free scale 100 of the present embodiment allows the leveler 60 to be easily visually recognized through the fourth through hole T4 covered with the transparent resin member 70.

  Further, in the barrier-free scale 100 of the present embodiment, the wireless communication board 11 includes the four volumes 12, the connector 14, and the pair of light sources 13, and the first through-hole T1, The second through hole T2 and the third through hole T3 are formed in the left protruding portion 32L of the second metal member 32 in the opening A3.

  Therefore, the barrier-free scale 100 of the present embodiment integrates the volume 12, the connector 14, and the light source 13 on the wireless communication board 11, thereby performing the operation using the volume 12, the connector 14, and the light source 13 continuously or simultaneously. Therefore, for example, the efficiency of the work can be improved as compared with the case where the volume 12, the connector 14, and the light source 13 are dispersedly arranged in the housing 10. In addition, by integrating the volume 12, the connector 14, and the light source 13 on the wireless communication board 11, the number of components can be reduced.

  Furthermore, in the barrier-free scale 100 of the present embodiment, the leveling device 60 is housed in the housing 10 near the wireless communication board 11, and the fourth through hole T4 is formed in the second metal member 32 in the opening A3. Is formed on the left protruding portion 32L.

  Therefore, the barrier-free scale 100 of the present embodiment accommodates the level unit 60 in the casing 10 near the wireless communication board 11 so that the level unit 60 can be used simultaneously with the operation using the volume 12, the connector 14 and the light source 13. Since it is possible to confirm the level 60, for example, the efficiency of the work can be improved as compared with the case where the leveling device 60 is stored in the housing 10 at a position away from the wireless communication board 11.

  Note that the arrangement of the volume 12, the connector 14, the light source 13, and the level unit 60 is merely an example, and is not limited to this example. For example, the wireless communication board 11 may include one component of the volume 12, the connector 14, and the light source 13, or may include two or more components.

  From the above description, many modifications and other embodiments of the present disclosure are obvious to one skilled in the art. Therefore, the above description is to be construed as illustrative only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the present disclosure. The details of the structure and / or function may be substantially changed without departing from the spirit of the present disclosure.

  One embodiment of the present disclosure can be used for a weighing device that can reduce a communication failure when wirelessly transmitting a load signal of a load detector to an indicator as compared with the related art.

Reference numeral 10: housing 11: wireless communication board 12: volume 13: light source 14: connector 20: indicator 21: controller 22: storage device 23: operating device 24: display 30: mounting table 30C: load measuring section 30D: facing Area 30L: Left projecting part 30R: Right projecting part 31: First metal member 31C: Load measuring part 31L: Left projecting part 31R: Right projecting part 32: Second metal member 32C: Load measuring part 32L: Left projecting part 32R: Right protrusion 33R: Right handrail 33L: Left handrail 34B: Rear handle 34F: Front handle 35B1: Rear caster 35B2: Rear caster 35F: Front caster 36: Battery cover 37: Power switch 38: AC jack 40: Base 41B: Rear slope 41F: front slope 50: floor surface 60: leveler 70: resin member 100: barrier-free Scale A1: Opening A2: Opening A3: Opening FB: Rear groove form FF: Front groove form FL: Left groove form FR: Right groove form H1: Horizontal holder H2: Battery holder LC: Load cell LC1 : Load cell LC2: Load cell LC3: Load cell LC4: Load cell N1: Notch N2: Notch N3: Notch S: Step T: Through hole T1: First through hole T2: Second through hole T3: Third through Hole T4: Fourth through hole

Claims (10)

A metal casing, housed in the casing, and a wireless communication board for wirelessly transmitting a load signal of a load detector to an indicator outside the casing,
The weighing device is configured such that a radio wave used for wireless communication of the load signal is transmitted through a facing region of the housing facing the wireless communication board.   The weighing device according to claim 1, wherein a resin member that covers the through hole of the housing is provided in the facing region. The wireless communication board includes a plurality of volumes for adjusting the sensitivity of the plurality of load detectors,
The weighing device according to claim 2, wherein the through hole includes a first through hole corresponding to the plurality of volumes. The wireless communication board includes a connector for performing maintenance of the weighing device,
The weighing device according to claim 2, wherein the through hole includes a second through hole corresponding to the connector.   The measuring device according to claim 2, wherein the resin member is a transparent member. The wireless communication board includes a light source indicating a state of wireless communication or a state of a power supply,
The weighing device according to claim 5, wherein the through hole includes a third through hole corresponding to the light source. A leveler housed in the housing near the wireless communication board,
The weighing device according to claim 5, wherein the through hole includes a fourth through hole corresponding to the level. The housing includes a mounting table configured by a laminate of a first metal member and a second metal member,
The through-hole is formed in the second metal member of the laminate in the opening of the first metal member of the laminate, and the resin member is formed in the opening in the opening to cover the through-hole. The weighing device according to any one of claims 2 to 7, wherein the weighing device is in contact with the two metal members. The wireless communication board includes a plurality of volumes for adjusting the sensitivity of the plurality of load detectors, a connector for performing maintenance of the weighing device, and a light source that indicates a state of wireless communication or a power supply. With two or more parts,
The weighing device according to claim 2, wherein a plurality of the through holes corresponding to the two or more components are formed in the housing. A leveler housed in the housing near the wireless communication board,
The weighing device according to claim 9, wherein the through hole corresponding to the leveler is formed in the housing.

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