JP4596935B2 - Weighing device and self-checkout device - Google Patents

Description

The present invention, the scale device, related to及beauty cell Ruff check-out equipment.

  For example, as a bag holder that holds a bag such as a plastic bag provided to a customer in a supermarket or the like in an open state, there are those described in Patent Documents 1 and 2. All of these bag holders hold a bag by making a hole in the center of the bag and hooking the hole on a hook. In this case, the bag is folded and a plurality of sheets are held in a stacked state. Then, a pair of left and right holding arms are arranged in the vicinity of the hook, and a bag holding portion is hooked on these holding arms so that the bag can be held in an open state. Patent Documents 1 and 2 show such handling that stores products after reading a product code in opened bags one after another.

  The difference between the bag holder described in Patent Document 1 and the bag holder described in Patent Document 2 is that the bottom surface of the opened bag is in a floating state (Patent Document 1) or the pedestal. It is whether the goods which are in contact and packed in the bag are placed on the pedestal (Patent Document 2). As described in Patent Document 2, it is more stable if the bottom of the opened bag is in contact with the pedestal and the packaged product is placed on the pedestal.

Japanese Patent Application Laid-Open No. 08-205972 JP 2000-123249 A

(First issue)
In the bag holders described in Patent Documents 1 and 2, the arrangement position of the bag that is held in the folded state by the hook is adjacent to the arrangement position of the bag that is held and held by the holding arm. . Thereby, the operation | work which hooks the holding part of the bag currently folded and hold | maintained quickly to a holding | maintenance arm becomes easy. In this case, it is important that the bottom of the folded bag held by the hook does not become an underlay for the bottom of the opened bag held by the holding arm. This is because, when the bottom of the folded bag becomes an underlay of the opened bag, the opened bag slides out in the process of packing products into the opened bag, and workability is impaired.

  In the bag holder described in Patent Document 1, since the folded bag is held with a hook so that the bottom of the bag does not contact the pedestal, the folded bag becomes an underlay of the opened bag. There is nothing. However, when such a configuration is adopted, there is a problem that the stability at the time of packing the product in the opened bag is lacking.

  In the bag holder described in Patent Document 2, since the pedestal is not provided at the holding position of the folded bag and the pedestal is provided only at the holding position of the opened bag, the folded bag is opened. There will be no underlayment of the bag. However, when such a configuration is adopted, there is a problem that the bag holder becomes a large-scale configuration as a whole.

(Second problem)
In the field of distribution systems, in recent years, the introduction of self-checkout devices has been studied in Japan, and although it is experimental, there are some cases where it is actually introduced. In such a self-checkout device, the bag holder may be used as a security weighing device. That is, in the self-checkout device, the weight of the product to be purchased by the customer is recognized in advance, and the weight of the product packed in the opened bag held by the bag holder after the settlement is recognized in advance. Determine if it matches the weight. If they match, an appropriate self-check has been performed, and if they do not match, fraud has been performed.

  As is well known, when a weighing object is placed in the middle of a weighing pan, the weighing device outputs the most accurate weighing result. In consideration of the application of the bag holder to the security weighing device, the above-mentioned pedestal is called a weighing pan. Therefore, it is desirable that the bag held in an open state is positioned in the middle of the weighing pan. However, as described above, when the bottom of the folded bag held by the hook becomes the underlay of the opened bag held by the holding arm, the product is packed in the opened bag. There is a problem that the opened bag starts to slide out of the center of the weighing pan.

  The configuration of the bag holder described in Patent Document 2 provides a solution to such a problem. However, as described above, when the configuration of the bag holder described in Patent Document 2 is adopted, the bag holder generally has a large configuration. This is a major obstacle when miniaturizing the self-checkout device.

  The object of the present invention is to open the folded bag without making the apparatus large, while adopting a configuration in which the opened bag is brought into contact with the pedestal and the packed product is placed on the pedestal. It is to reliably prevent the underlayment of the bag.

The weighing apparatus according to the present invention includes a pedestal, a support portion standing on an upper surface of the pedestal, a pair of holding arms supported by the support portion and holding a bag, supported by the support portion, and above the pedestal. A temporary placing table provided on the pedestal, and a scale unit that measures a load received by the temporary placing table, a load received by the holding arm, and a load received by the pedestal, The holding arm has a first holding portion for holding the bag in a folded state on the root side, and the bag is continuously connected to the first holding portion from a holding position by the first holding portion. A second holding portion that holds the bag in an open state at a lower position on the tip side, and the second holding portion has a height at which an article packed in the bag is placed on the pedestal. The lower end of the bag is held by the second holding part. Holding the bag at a height which does not reach the position of the serial bag, characterized in that.

Self-checkout system of the present invention includes a first weighing device for weighing the weight of the product items being purchased is placed on the weighing pan, and the product information reading section for reading a commodity code attached to a commodity, reading means for performing a merchandise sales data processing including calculating a settlement amount according commodity code attached, and means for enabling settlement processing of the calculated the settlement amount, and payment terminal and a above scale device, the provided, wherein the determining the consistency of the weight that is metered by the first by weight and pre Kihakari device weighing in weighing device.

  According to the present invention, even if the configuration in which the opened bag is brought into contact with the pedestal and the packed product is placed on the pedestal is adopted, the folded bag can be opened without making the apparatus large. It is possible to reliably prevent the underlayment of the bag.

  An embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a self-checkout device. The self-checkout device includes an initial balance device 101, a settlement terminal 201, and a balance device 301.

  The first weighing device 101 is provided to protrude to the left side of the housing 202 of the settlement terminal 201 and has a weighing pan 102 on the upper surface. On the mounting table 102a located on the upper surface of the weighing pan 102, a protrusion 103 for positioning a basket (not shown) used in a supermarket or the like is formed in an L shape. The first scale device 101 is a load cell scale that measures the weight of an article placed on the placing table 102 a located on the upper surface of the weighing pan 102, and outputs the weighing result to the settlement terminal 201. Since the first weighing device 101 is a load cell balance structurally, a detailed description thereof is omitted.

  However, what is characteristic about the first weighing device 101 is the shape of the weighing pan 102. The front end edge of the mounting table 102a located on the upper surface of the weighing pan 102 can slide down an item placed on the mounting table 102a at the front position of the basket in a state where the basket is mounted on the mounting table 102a. It is formed in a curved shape.

  The housing 202 of the payment terminal 201 is configured by a base housing 202a that is installed on the floor and to which the first weighing device 101 is fixed, and a small upper housing 202b that is placed on the upper surface of the base housing 202a. . The front surface of the base housing 202a is inclined so as to narrow the projected area of the base housing 202a as it goes downward. As a result, the base housing 202a has a shape that is offset toward the back as it goes downward.

  In the upper housing 202b, a barcode scanner 203 as a commodity information reading unit is arranged on the left side, and a printer cover 204 and a monitoring camera 205 are arranged on the right side. The barcode scanner 203, the printer cover 204, and the monitoring camera 205 are arranged. A card reading unit 206 and a numeric keypad 207 are arranged between them. The barcode scanner 203 is a vertical scanner that functions as a product information reading unit that reads a product code attached to a product. The printer cover 204 is provided with a receipt issuing port 208. A receipt printer (not shown) is built in the upper housing 202b on the back side of the printer cover 204, and a receipt (not shown) printed by the receipt printer is issued from a receipt issuing port 208. The printer cover 204 is attached to the upper housing 202b so as to be openable and closable, and is opened by pulling the flap 209. The monitoring camera 205 is disposed above the printer cover 204. The card reading unit 206 establishes wireless communication with a non-contact IC card (not shown), and reads / writes information from / to the non-contact IC card. The contactless IC card can store and save electronic money having a value equivalent to cash, and is used for settlement. In FIG. 1, an antenna (not shown) is built in the back of the portion marked “CARD” in the circle, and wireless communication with the non-contact IC card is established via this antenna. The numeric keypad 207 is used for inputting a personal identification number at the time of settlement with a non-contact IC card.

  A display 210 having a liquid crystal display panel is attached to the upper housing 202b. The display 210 has a touch panel 211 on its display surface and a card reading groove 212 on the right side. A card reader (not shown) is built in the card reading groove 212. The card reader reads information recorded on a magnetic card such as a credit card, for example, a card number or a password.

  The base housing 202a incorporates a coin / banknote deposit and withdrawal device (not shown). As a part of the deposit / withdrawal device, a coin insertion slot 213 is disposed on the central upper surface of the base housing 202a, and a coin payout outlet 214 is disposed on the left side thereof. In addition, a bill insertion slot 215 and a bill dispensing outlet 216 are arranged at the upper right position on the front surface of the base housing.

  Further, a display pole 217 for displaying the current state of the self-checkout device is erected from the back surface of the base housing 202a. The display pole 217 has a light emitting portion 218 that selectively emits blue and red light at the tip.

  The settlement terminal 201 has a control unit (not shown) inside. For example, the control unit may have a semiconductor chip configuration in which an operation sequence is written, or may have a microcomputer configuration in which an operation program is stored in a RAM or the like. In any case, the control unit executes a processing process for executing merchandise sales data processing including calculation of a settlement amount according to the read product code, and a processing process for enabling settlement processing for the calculated settlement amount. . In the product sales data processing, basically, when the barcode attached to the product is read by the barcode scanner 203, the product code specified by the barcode and the unit price corresponding to the product code are set to the PLU. Search from the file and execute the total sales amount calculation including consumption tax calculation required according to the closing operation on the touch panel 211 to calculate the settlement amount, and temporarily register the settlement amount or register it in the sales file . In the settlement process, the settlement amount calculated in the merchandise sales data process can be settled using a magnetic card such as cash or a credit card, or a contactless IC card that stores and saves electronic money. The handling of cash is executed by a deposit / withdrawal device provided in the base housing 202a, the handling of a magnetic card is executed by a card reader provided in the card reading groove 212, and the handling of a non-contact IC card is performed by a card. It is executed via the reading unit 206.

  FIG. 2 is a perspective view showing the scale device 301. The scale device 301 is configured such that a scale pan 303 is provided on an upper portion of a scale housing 302, and a bag holder 304 is attached to the scale pan 303. The weighing pan 303 has a mounting table 303a on its upper surface. The bag holder 304 is attached to the mounting table 303a. Therefore, when viewed from the bag holder 304, the weighing pan 303 constitutes a pedestal. That is, a pole-shaped arm support portion 305 is erected at the rear center portion of the mounting table 303a, and a temporary mounting table 306 for mounting an article is fixed to the upper end of the arm support unit 305. The temporary placement table 306 is a table that has a flat upper surface and is used for temporarily placing products after the barcode is read by the barcode scanner 203 of the payment terminal 201. A pair of holding arms 307 and a hook 308 are attached to the lower surface of such a temporary placing table 306. The holding arm 307 has a bag 401 such as a plastic bag provided to a customer in a supermarket, for example, that is, an opening 402 and a pair of handles 403 protruding from the opening 402, and these handles 403 are positioned on both sides. In order to hold the folded bag 401, the pair of grips 403 is held in a skewered state (see FIGS. 6, 7, and 9 to 12 for the bag 401). In order to realize such a holding state, a slit 404 is formed in the handle 403 (see FIG. 7). In addition, the bag 401 is formed with a pair of ears 406 that are positioned between the pair of handles 403 and can be removed by the perforation 405, and the hooks 407 are formed in these ears 406. (See FIG. 7). The hook 308 is inserted through the hooking hole 407, thereby holding the bag 401 together with the holding arm 307.

  FIG. 3 is a side view showing the holding arm 307 and the hook 308 of the bag holder 304. Arm attachments 309 are fixed at both ends of the lower surface of the temporary table 306. The fixing is performed by various fixing methods such as screwing and adhesive fixing. A holding arm 307 is embedded in each of the arm attachments 309. Further, a hook attachment 310 is fixed at the center of the lower surface of the temporary table 306. The fixing is performed by various fixing methods such as screwing and adhesive fixing. A hook 308 is embedded in the hook attachment 310.

  FIG. 4 is a side view showing a mounting structure of the holding arm 307 of the bag holder 304. FIG. 4 shows a side shape of the arm attachment 309 and a structure in which the holding arm 307 is embedded in the arm attachment 309.

  FIG. 5 is a side view showing the attachment structure of the hook 308 of the bag holder 304. FIG. 5 shows a side shape of the hook attachment 310 and a structure in which the hook 308 is embedded in the hook attachment 310.

  FIG. 6 is a side view showing a state where the bag 401 is held by the holding arm 307. When the bag 401 is folded, a hooking hole 407 provided in the ear portion 406 is hooked on the hook 308 and held (see FIG. 7). The holding arm 307 has a first holding portion 311 on the base side for holding the folded bag 401 held by the hook 308 in this way. The hooks 308 and the first holding unit 311 have a holding capacity that can hold the folded bags 401 in a stacked state. The holding arm 307 also has a second holding portion 312 that holds the bag 401 in an open state at a position lower than the holding position by the first holding portion 311 in succession to the first holding portion 311 on the distal end side. Have. The first holding unit 311 and the second holding unit 312 are connected to the second holding unit 312 from the first holding unit 311 by an inclined unit 313 that linearly inclines.

  Here, the second holding unit 312 will be described in detail. The second holding unit 312 holds the bag 401 at such a height that an item packed in the bag 401 is placed on the placing table 303 a located on the upper surface of the weighing pan 303. Moreover, the second holding portion 312 places the bag 401 at a position positioned at the center of the placement table 303a. In FIG. 6, the central portion of the mounting table 303 a is indicated as C.

  Further, the second holding portion 312 is formed in a shape in which the height of the central portion is increased, more specifically in an arch shape. Therefore, the two points at both ends of the second holding part 312 are low in height, and the central part connecting these two low points is raised in an arch shape. Then, the end portion of the second holding portion 312, that is, the portion that becomes the forefront of the holding arm 307 rises obliquely upward from a portion having a low height. This raised portion is a return portion 314 for preventing the handle 403 of the held bag 401 from dropping off.

  As another embodiment of the second holding unit 312, the second holding unit 312 may include a plurality of bulged portions. In this case, a plurality of sets of two points having low heights on both sides of the arch shape are generated. For example, when there are three bulged portions in the arch shape, three sets of two points with low heights on both sides are generated. Therefore, in this example, the second holding unit 312 can hold the three bags 401 in an opened state.

  Next, the first holding unit 311 will be described in detail. The first holding unit 311 and the hook 308, together with the hook 401, the lower end of the bag 401 held by the second holding unit 312 is positioned on the mounting table 303a, that is, the bag 401 is placed on the mounting table 303a. The bag 401 is held at a height that does not reach the position in contact with the bag 401. This height is shown as height H in FIG. Further, whether or not the lower end of the bag 401 held by the first holding unit 311 and the hook 308 reaches the position of the bag 401 held by the second holding unit 312 is determined from the first holding unit 311 and the hook 308. This depends on the distance between the position where the bag 401 is positioned vertically and the position of the bag 401 held by the second holding unit 312. This distance is shown as distance I in FIG. The inclined portion 313 plays a role of securing the distance I.

  As is clear from the above description, in the present embodiment, the first holding unit 311 has the bag 401 positioned at a height at which the lower end contacts the mounting table 303a, and the lower end of the bag 401 is the second. The bag 401 is held so as not to reach the position of the bag 401 held by the holding unit 312. The 1st holding | maintenance part 311 has the technical significance that the height of the 1st holding | maintenance part 311 itself is not made too high by positioning the bag 401 in the height which a lower end contacts the mounting base 303a. If the height of the first holding part 311 is too high, workability for the work of holding the bag 401 in the first holding part 311 or the bag from the first holding part 311 to the second holding part 312 By setting the height of the first holding portion 311 to such a height that the bag 401 is positioned at a height at which the lower end contacts the mounting table 303a, while workability for the work to move is deteriorated. The workability of the work can be maintained well.

  As another example of the first holding unit 311, the first holding unit 311 positions the bag 401 at a height that does not allow the lower end to contact the mounting table 303 a, so that the lower end of the bag 401 is held in the second holding state. The position of the bag 401 held by the portion 312 may not be reached.

  FIG. 7 is a perspective view showing a state where the bag 401 is held by the holding arm 307. FIG. 7 shows a state in which a bundle of bags 401 in a state of being folded by the hook 308 and the first holding portion 311 of the holding arm 307 is held. In addition, referring to FIG. 7, it can be seen that the bag 401 is held at two points where the height of the second holding unit 312 is lowered, thereby opening the opening 402 of the bag 401.

  FIG. 8 is a schematic diagram showing an electrical hardware configuration of the scale device 301. The scale device 301 includes a load cell unit 351 as a weighing unit. The load cell unit 351 has one end side of a load cell (not shown) having a structure and shape fixed to the base 352 and a load receiving portion 353 on the other end side. A scale frame 354 is fixed to the load receiving portion 353. Although not shown in FIG. 8, the scale frame 354 has an X shape when viewed from above, and the scale plates 303 are placed at the four corners. The output signal of the load cell unit 351 is amplified by an amplifier 355, converted into a digital signal by an analog / digital converter (AD / C) 356, and analyzed by a calculation unit 357. The arithmetic unit 357 performs weight analysis based on the output signal of the load cell unit 351. The arithmetic unit 357 may have a semiconductor chip configuration in which an operation sequence is written, for example, or a microcomputer configuration that operates by storing an operation program in a RAM or the like. The calculation unit 357 transmits the weight data as the analysis result to the transmission unit 358 and outputs the weight data to the payment terminal 201 via the transmission unit 358.

  In such a configuration, the self-checkout device enables self-checkout. Explain the flow of self-checkout. The customer puts the product to be purchased in the basket, brings it to the self-checkout device, and places the product on the mounting table 102a located on the upper surface of the weighing pan 102 in the first weighing device 101. Thereby, the weight of the product to be purchased by the customer is weighed together with the basket by the first scale device 101.

  Subsequently, the customer holds the product in front of the barcode scanner 203 and causes the barcode attached to the product to be read. Thereby, the payment terminal 201 executes merchandise sales data processing. In the merchandise sales data processing, as described above, the product code specified by the barcode read by the barcode scanner 203 and the unit price corresponding to the product code are searched from the PLU file, and the product sales data processing is performed according to the tightening operation on the touch panel 211. The total sales amount calculation including necessary consumption tax calculation is executed to calculate the settlement amount, and the settlement amount is provisionally registered or registered in the sales file. In order to support such merchandise sales data processing, the control unit of the payment terminal 201 displays an operation method on the display 210 to facilitate customer convenience. In addition, a button for allowing the customer to perform a tightening operation is displayed, and the tightening operation using the touch panel 211 is enabled.

  In such merchandise sales data processing, the customer opens the bag 401 held by the bag holder 304 in advance. That is, the uppermost bag 401 is pulled out from the plurality of bags 401 that are closed by the first holding portion 311 of the holding arm 307 and held in a stacked state. At this time, the ear 406 of the bag 401 can be removed at the perforation 405 and left on the hook 308. The pulled bag 401 is held by the second holding unit 312. At this time, the bag 401 naturally opens the opening 402 by positioning the handle 403 of the bag 401 at two low points on both sides of the arch shape formed in the second holding portion 312. In this state, the customer sequentially packs the products for which the barcode has been read by the barcode scanner 203 into the bag 401. As described above, as another embodiment, if the second holding unit 312 has a plurality of bulged portions and can hold a plurality of bags 401 in an open state, the customer can , The products for which the product code has been read by the barcode scanner 203 are successively packed in a plurality of bags 401.

  In such a bagging operation, a product that is easy to lose its shape, such as an egg or tofu, and that cannot be packed under the bag 401 is placed on the temporary table 306. As a result, the product packed in the bag 401 and the product placed on the temporary placing table 306 apply a load to the weighing pan 303 of the weighing device 301, and the load is measured by the load cell unit 351. Become. The measurement result by the load cell unit 351 is output to the payment terminal 201 via the transmission unit 358 as described above.

  Subsequently, when the customer performs a closing operation using the touch panel 211, the control unit of the payment terminal 201 executes a payment process. As described above, the settlement process enables settlement using a non-contact IC card that stores and saves magnetic cards such as cash and credit cards and electronic money for the settlement amount calculated in the merchandise sales data process.

  Here, the self-checkout device determines consistency between the weight measured by the first weighing device 101 and the weight measured by the weighing device 301. As an example, the determination of consistency is performed in the flow of time until a predetermined time elapses after the measurement value in the first weighing device 101 decreases, and thereafter, the decrease in the measurement value in the first weighing device 101 and thereafter. The determination is made as to whether or not the increment of the measurement value in the scale device 301 that occurs in the above is coincident. That is, since the weight of the product to be purchased by the customer is weighed together with the basket by the first weighing apparatus 101, the product is read when the barcode attached to the product is read by the barcode scanner 203. By taking out from the basket, the measured value in the first weighing device 101 decreases. After the barcode reading operation by the barcode scanner 203, the product is packed in the bag 401 held in the bag holder 304 of the scale device 301 or on the temporary table 306. Placed. The work time required for the product to be taken out from the basket placed on the first weighing apparatus 101 and packed in the bag 401 or placed on the temporary placing table 306 is generally about several seconds. . Therefore, as an example, the self-checkout device sets, as an example, a time obtained by adding the time of + α to the expected time as the work time, and the predetermined time after the measurement value in the first weighing device 101 decreases. In the flow of time until the time elapses, there is a consistency when the amount of decrease in the measured value in the first weighing device 101 and the amount of increase in the measured value in the subsequent weighing device 301 coincide with each other. In this case, it is determined that there is no consistency. If there is no consistency, it means that some operation mistake or fraud has been made. Therefore, in this case, the control unit of the self-checkout device has changed the light emission color of the light emitting unit 218 provided at the tip of the display pole 217 from blue to red, and some operation mistake or fraud has been performed. Is notified.

  An example of another process for determining the consistency between the weight weighed by the first weighing device 101 and the weight weighed by the weighing device 301 will be described. When the customer performs a tightening operation using the touch panel 211, the self-checkout device compares the weighing result obtained by the first weighing device 101 with the weighing result obtained by the weighing device 301. That is, the control unit of the settlement terminal 201 determines whether the value obtained by taring the weight of the cage from the measurement value that is the measurement result obtained by the first weighing device 101 and the measurement value that is the measurement result obtained by the balance device 301 are inconsistent. To do. If the two values match, all the products in the basket have been correctly settled. On the other hand, if the two values do not match, the product in the basket has not been correctly settled, and some operation error or fraud has occurred. Therefore, in this case, the control unit of the self-checkout device has changed the light emission color of the light emitting unit 218 provided at the tip of the display pole 217 from blue to red, and some operation mistake or fraud has been performed. Is notified.

  Next, the bag holder 304 of the present embodiment has a unique point regarding the holding state of the bag 401. Hereinafter, the unique point which the bag holder 304 of this Embodiment has is demonstrated.

  First, the second holding unit 312 of the holding arm 307 holds the bag 401 at such a height that an item packed in the bag 401 is placed on the placing table 303a on the upper surface of the weighing pan 303, and further, the placing table 303a. The bag 401 is placed at a position positioned at the center of the bag. Thereby, when the weight of the arm support part 305 and the temporary placing table 306 is ignored, a load is applied to the central part of the weighing pan 303. As is well known in the load cell scale, when a load is applied to the end of the weighing pan 303, an unnecessary moment is generated, which causes an error in the measured value. On the other hand, if a load is applied to the center portion of the weighing pan 303 as in the present embodiment, the weighing error of the load cell unit 351 is minimized.

  Next, the technical significance of the holding height H of the bundle of the closed bags 401 by the first holding unit 311 and the hook 308 will be described. As described above, the holding height H is a height at which the lower end of the bag 401 held by the first holding unit 311 together with the hook 308 does not reach the position of the opened bag 401 held by the second holding unit 312. That's it. Thereby, the bundle of the closed bags 401 does not become an underlay of the opened bags 401. Accordingly, it is reliably prevented that the opened bag 401 slides out and the position thereof is shifted from the center portion of the weighing pan 303 in the process of packing the articles into the opened bag 401 one after another. As a result, the problem that the opened bag 401 is difficult to put in due to the sliding of the opened bag 401 is also a problem that the weighing error in the load cell unit 351 increases due to the opened bag 401 being displaced from the center portion of the weighing pan 303. Both can be solved.

  FIG. 9 is a side view showing a problem that occurs when the height H in FIG. 6 is low. In FIG. 9, the holding height of the bundle of the closed bags 401 by the first holding portion 311 and the hook 308 is lower than the height H for comparison with the bag holder 304 of the present embodiment. An example of H-α is shown. When the holding height of the bundle of the bags 401 is the height H-α, the bundle of the closed bags 401 becomes an underlay of the opened bag 401, and the opened bags 401 are successively packed with items. In the course of going, the opened bag 401 slides out and its position has shifted from the center of the weighing pan 303.

  Next, the technical significance of the inclined portion 313 that connects the first holding portion 311 and the second holding portion 312 will be described. As described above, the inclined portion 313 is a distance I between the position where the bag 401 is vertically positioned from the first holding portion 311 and the hook 308 and the position of the bag 401 held by the second holding portion 312. To play a role in ensuring That is, the distance I affects whether the lower end of the bag 401 held by the first holding unit 311 and the hook 308 reaches the position of the bag 401 held by the second holding unit 312. If the distance I is secured, the lower end of the bag 401 held by the first holding unit 311 and the hook 308 is bent in contact with the mounting table 303a of the weighing pan 303 and opened to the second holding unit 312. Even if the bag 401 is extended to some extent in the direction of the bag 401 held by the, the bundle of the closed bags 401 can be prevented from reaching the opened bag 401.

  FIG. 10 is a side view showing a problem that occurs when there is no interval I in FIG. FIG. 10 illustrates a state where the distance I is not ensured for comparison with the bag holder 304 of the present embodiment. When the distance I is not secured, the lower end of the bag 401 held by the first holding unit 311 and the hook 308 is bent in contact with the mounting table 303a of the weighing pan 303 and opened to the second holding unit 312. If the bag 401 is extended in the direction of the bag 401 held at, the bundle of the closed bags 401 reaches the opened bag 401.

  FIG. 11A is a side view showing another problem that occurs when there is no interval I in FIG. In the holding arm 307, since the holding height of the bag 401 by the first holding unit 311 and the holding height of the bag 401 by the second holding unit 312 are different, if the distance I is not secured at all, The first holding unit 311 and the second holding unit 312 are connected by a vertical member. FIG. 11 illustrates such a structure. As apparent from FIG. 11, if the first holding portion 311 and the second holding portion 312 are connected by the vertical member, the bag 401 is held when the bundle of bags 401 is held by the holding arm 307. The bundle must be bent largely as illustrated in FIG.

  FIG. 11B is a side view showing an advantage when the interval I in FIG. 6 is secured. On the other hand, when the first holding part 311 and the second holding part 312 are connected by the inclined part 313 and the distance I is secured as in the present embodiment, it is illustrated in FIG. In this way, the bundle of bags 401 can be held by the holding arm 307 without greatly bending.

  FIG. 12 is a side view showing the advantage of the arch shape of the holding arm 307. As described above, when using the self-checkout device, the bag 401 is moved to the second holding portion 312 of the holding arm 307, and the positions of the two points at both ends where the height of the second holding portion 312 is low. The handle 403 of the bag 401 is positioned on the bag. At this time, the handle 403 of the bag 401 is accurately positioned at two positions on both ends where the height of the second holding unit 312 is low, so that the opening 402 is formed at the center of the mounting table 303 a of the weighing pan 303. The bag 401 in which is opened is positioned. On the other hand, as illustrated in FIG. 12A, the case where the handle 403 of the bag 401 is positioned at a position deviated from the positions of the two points at both ends of the second holding portion 312 where the height is low. Suppose. In this case, as indicated by a dotted arrow in FIG. 12B, the lower side of the bag 401 gradually expands in the process of packing the goods into the bag 401, and accordingly, the upper side of the bag 401 is also shown in FIG. ) As indicated by solid arrows. As a result, the handle 403 of the bag 401 slides on the arch-shaped portion formed at the center of the second holding portion 312 and is naturally positioned at two positions on both ends where the height of the second holding portion 312 is low. Will be. The arch shape of the second holding portion 312 is useful for sliding the handle 403 of the bag 401 toward the two positions at both ends where the height of the second holding portion 312 is low.

  FIG. 13 is a side view showing another embodiment of the holding arm 307. The holding arm 307 illustrated in FIG. 13 is the same as the embodiment illustrated in FIGS. 1 to 12 in that the holding arm 307 is formed in a shape in which the height of the central portion is increased. On the other hand, the holding arm 307 illustrated in FIG. 13 is not an arch shape, but has a flat central portion, and from the flat portion to two positions on both ends having a low height. It has a shape that falls in a straight line. Such a holding arm 307 also has an effect of sliding the handle 403 of the bag 401 illustrated in FIGS. 12A and 12B.

  FIG. 14 is a side view showing still another embodiment of the holding arm 307. The holding arm 307 illustrated in FIG. 14 is formed in a shape in which the height of the central portion thereof is increased, and the embodiment illustrated in FIG. 1 to FIG. 12 and the embodiment illustrated in FIG. It is the same. On the other hand, the holding arm 307 illustrated in FIG. 14 is not an arch shape, but has a flat center portion, and two grooves 312a at both ends of the lower end. Is formed by. In such a holding arm 307, the handle 403 is positioned by fitting the handle 403 of the bag 401 into the groove 312a.

It is a perspective view which shows the self-checkout apparatus as one Embodiment of this invention. It is a perspective view which shows a scale apparatus. It is a side view which shows the holding | maintenance arm and hook of a scale apparatus. It is a side view which shows the attachment structure of the holding | maintenance arm of a bag holder. It is a side view which shows the attachment structure of the hook of a bag holder. It is a side view which shows the state in which the bag is hold | maintained at the holding arm. It is a perspective view which shows the state in which the bag is hold | maintained at the holding arm. It is a schematic diagram which shows the electrical hardware constitutions of a bag holder. It is a side view which shows the problem which arises when the height H in FIG. 6 is low. It is a side view which shows the problem which arises when there is no space | interval I in FIG. (A) is a side view showing another problem that occurs when there is no interval I in FIG. 6, and (b) is a side view showing advantages when the interval I in FIG. 6 is secured. It is a side view which shows the advantage of the arch shape of a holding arm. It is a side view showing another embodiment of a holding arm. It is a side view which shows another one Embodiment of a holding | maintenance arm.

Explanation of symbols

101: First weighing apparatus, 102: Weighing pan, 201: Payment terminal, 203: Product information reading unit (barcode scanner), 303: Base, weighing pan, 304: Bag holder, 305: Arm support unit, 306: Temporary placing table, 307: holding arm, 311: first holding part, 312: second holding part, 313: inclined part, 351: weighing part (load cell unit), 354: load receiving part 402: opening, 403 : Handle, 401: Bag

Claims (9)

A pedestal,
A support portion standing on the upper surface of the pedestal;
A pair of holding arms supported by the support portion and holding the bag;
A temporary stand that is supported by the support and provided above the pedestal;
A scale unit provided below the pedestal, for weighing the load received by the temporary table, the load received by the holding arm, and the load received by the pedestal;
With
The holding arm has a first holding portion for holding the bag in a folded state on the root side, and the bag is continuously connected to the first holding portion from a holding position by the first holding portion. A second holding portion that is held open at a lower position on the tip side,
The second holding unit holds the bag at a height at which items packed in the bag are placed on the pedestal,
The first holding unit holds the bag at a height at which the lower end of the bag does not reach the position of the bag held by the second holding unit.
A weighing apparatus characterized by that . The scale device according to claim 1, wherein the first holding part and the second holding part are connected by an inclined part that descends toward the tip of the holding arm. The scale device according to claim 1 or 2, wherein the second holding portion is formed in a shape in which a height of a central portion thereof is increased. The scale device according to claim 3, wherein the second holding portion is formed in an arch shape. The first holding unit holds the bag positioned at a height at which the lower end contacts the pedestal so that the lower end of the bag does not reach the position of the bag held by the second holding unit. The scale device according to any one of claims 1 to 4. The first holding unit positions the bag at a height that does not allow the lower end to contact the pedestal, so that the lower end of the bag does not reach the position of the bag held by the second holding unit. The scale device according to any one of claims 1 to 4. The scale device according to any one of claims 1 to 6, further comprising a hook portion that is provided between the pair of holding arms and hooks the folded bag. A first weighing device on which a product to be purchased is placed on a weighing pan and weighs the product;
A product information reading unit for reading a product code attached to a product, a means for executing product sales data processing including calculation of a settlement amount according to the read product code, and a settlement process for the calculated settlement amount A payment terminal comprising: means;
A scale device according to any one of claims 1 to 7 ,
A self-checkout device comprising: determining consistency between a weight measured by the first weighing device and a weight measured by the weighing device. The determination of the consistency occurs after a decrease in the measured value in the first weighing device and after the decrease in the measured value in the first weighing device in the flow of time until a predetermined time elapses after the measured value in the first weighing device decreases. The self-checkout device according to claim 8 , wherein the self-checkout device is executed by determining whether or not the increment of the measured value in the scale device matches.

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