JP2002286540A - Weighing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate coupling work. SOLUTION: This weighing machine 1 has, in a body housing 2, a weight measuring mechanism for measuring the weight of an inspected object placed on a pan 3 provided on an upper face of the body housing 2, and is equipped with a turning/coupling mechanism 23 and a positioning member 15. The mechanism 23 couples a display/operation device 4 to the housing 2 turnably around a substantially horizontal axis with the device 4 extending lower than the lower end of the installed housing 2 and selectively positions the device 4 at a first position producing a work space X for coupling the housing 2 onto the device 4 and at a second position to which the device 4 makes turning motion to cause the work space X to be closed by the housing 2 and device 4. The member 15 can keep the position of the device 4 unchanged even if an operation force is applied in a direction pressing against the device 4 present at the second position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing apparatus used, for example, when selling a product facing a customer.

[0002]

2. Description of the Related Art Conventionally, there is a weighing apparatus having a load cell unit for measuring the weight of a product placed on a plate provided on an upper surface of a main body housing having a housing shape in the main body housing. A display unit for displaying predetermined information is integrally provided on the front and back surfaces of the main body housing. An operation unit for performing various operations is integrally provided on the front of the main body housing. A display operation unit is formed by a display unit and an operation unit on the front surface of the main body housing.

[0003] Such a weighing device is used, for example, placed on a showcase in a store that operates such as weighing meat and prepared foods through a showcase.

[0004] Generally, a showcase has a certain height. By placing the weighing device on the showcase, the position of the plate becomes higher.

[0005] For this reason, depending on the height of the operator, there is a concern that it may be difficult to place the meat or prepared food to be weighed on a plate.

As a countermeasure, if the height of the main body housing is reduced and the height of the plate is reduced, the display operation unit is reduced in size, so that the visibility of information on the display operation unit and the operability are reduced. Is concerned.

In order to solve these inconveniences, in recent years, a display operation device which functions as a display operation portion and a main body housing are separately provided, and the display operation device and the main body housing are provided with mounting portions such as screws. A weighing device connected via a via is contemplated.

By making the display operation device and the main body housing separate, the height size of the display operation device can be set without depending on the height size of the main body housing.

Thus, the height of the main body housing is shortened to reduce the height of the plate, and the height of the display / operation device in the height direction is made longer than the height of the main body housing. As a result, the visibility and operability of information in the display operation device can be ensured well.

Here, when the dimension in the height direction of the display / operation device is made longer than the dimension in the height direction of the main body housing, the upper end of the main body housing and the upper end of the display / operation device are aligned so as to align the display / operation device. The display operating device is attached to the main body housing with the lower end protruding from the lower end of the main body housing. At this time, by mounting the display operation device in a state of being inclined upward, the visibility and operability of the display operation device are improved as compared with the case where the display operation device is mounted vertically. Further, since the display operation device does not hide the plate, it is possible to prevent the measurement of the weight from being hindered.

[0011]

As described above, since the load cell unit is provided in the main body housing, the main body housing is relatively heavy. For this reason, for example, when connecting the display operation device removed at the time of maintenance, it is not preferable to involve a complicated and large-scale operation such as turning over the main body housing and working from the back side.

In this respect, in the above-mentioned weighing device, a work space is provided above the mounting portion so that the mounting operation can be performed without any trouble so that the display operation device can be mounted from above the main body housing. . By securing a work space above the mounting portion, the connection operation of the display operation device can be performed from above, so that the connection operation can be facilitated.

[0013] Here, it is conceivable that foreign matters such as dirt and dust or meat juice dripping from the loading plate accumulate in the work space due to the upper part being opened. Naturally, such foreign substances need to be periodically removed. Regarding the removal of foreign matter, by securing a large work space, it becomes possible to perform the foreign matter removal work while the display operation device is attached to the main body housing. However, in order to avoid an increase in the size of the weighing device and loss of aesthetics, it is desirable that the working space be as small as possible.

That is, with the above-mentioned weighing device, there is a concern that it is difficult to achieve both the simplification of the connecting operation and the maintenance of the aesthetic appearance.

According to the present invention, the operation of connecting the display / operation device provided separately from the main body housing is facilitated.
An object of the present invention is to obtain a weighing device capable of improving the beauty of the weighing device.

[0016]

According to a first aspect of the present invention, there is provided a weighing apparatus having a weight measuring mechanism for measuring the weight of a subject placed on a plate in a main body housing.
A flat display operation device having a display portion for displaying information and an operation portion for performing various operations on one side, and the display operation on the main body housing in a state extending below a lower end of the installation of the main body housing. A first position in which the device is rotatably connected about a substantially horizontal axis, and a working space for connection between the main body housing and the display / operation device is created between the main body housing and the display / operation device; A rotation connection mechanism for selectively positioning the display operation device at a second position where the display operation device is covered by the display operation device when the display operation device is rotated upward; A positioning member for positioning the device in the second position so as to be stationary with respect to operation.

Therefore, when connecting the display operation device to the main body housing, the display operation device is rotated about a substantially horizontal axis with respect to the main body housing by the rotation connection mechanism to thereby move the display operation device to the first position. , A work space for a connection operation is formed between the main body housing and the display / operation device. by this,
The connection operation of the display operation device can be performed from above. When operating the display operating device, the display operating device is rotated about a substantially horizontal axis with respect to the main body housing by the rotation connection mechanism to position the display operating device at the second position. The upper part of the device is covered, and the display operating device is positioned by the positioning member so as to be immobile with respect to the operation in the second position. As a result, the work space that is unnecessary in normal use is made inconspicuous,
It is possible to improve the stability at the time of operation at the position.

According to a second aspect of the present invention, in the weighing device according to the first aspect, the rotation connecting mechanism includes a hinge attached to the display operation device, and an attachment screw for fixing the hinge to the main body housing. Having.

Therefore, at the time of connecting the display operation device, the display operation device is rotatably connected to the main body housing by tightening the mounting screw via the hinge. This makes it possible to simplify the connection work.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, for example, a store clerk and a customer face each other via a showcase, and are used by placing them on the showcase in a butcher shop or the like that weighs meat and the like displayed in the showcase. An example of application to a facing weighing device will be described.

FIG. 1 is a perspective view showing a weighing device according to a first embodiment of the present invention, and FIG. 2 is a rear perspective view thereof. The weighing device 1 includes a main body housing 2 having a housing shape in which an upper main body housing 2a and a lower main body housing 2b are vertically fitted. A load cell unit (not shown) is provided in the main body housing 2 as a weight measuring mechanism for outputting the weight of the article as an electric signal.

Although a detailed description is omitted because it is a known technique, the load cell unit is provided with a strain-generating body that deforms according to an applied load, and a strain gauge attached to the strain-generating body. The output of the load cell unit changes according to a change in the resistance value of the strain gauge according to the deformation of the strain body.

On the upper side of the main body housing 2 is mounted a plate 3 on which a product (subject) whose weight is to be measured is placed. The plate 3 is connected to a load cell unit provided in the main body housing 2, whereby the weight of the product placed on the plate 3 is transmitted to the strain body of the load cell unit.

Assuming that the side facing the operator in use is the front side, a display operation device 4 having a flat shape in the front-rear direction is provided on the front surface of the main body housing 2 and the rear surface of the main body housing 2 has information for the customer. Is displayed.

The customer-side display device 5 is a full-segment display, and displays information such as the product name of the product to be measured and the price calculated from the weight and the unit price, in addition to the measured product weight. It is possible to display.

On the right side of the front of the main body housing 2,
A label issuing port 6 for issuing a label (not shown) on which predetermined items are printed by a printer (not shown) incorporated in the main body housing 2 is provided. The weighing device 1 of the present embodiment is a label paper printed by a printer.
A mechanism (not shown) for holding (not shown) and sending out as needed.

On the front side of the casing 7 of the display / operation device 4, an LCD (Liquid
A crystal display 8 and a touch panel 9 as a resistive operation unit laminated on the display surface side of the LCD 8 are provided. In the display operation device 4, one key has a function of a one-touch key for reading one piece of product information, and when the product information is read, a product name, a unit price, and the like of the product are displayed.

FIG. 3 is a rear perspective view showing the display operation device 4. A pair of hinges (hinges) 10 is mounted on the upper rear surface of the casing 7 of the display operation device 4. The pair of hinges 10 are constituted by two planes 12 and 13 that are rotatably connected to each other around a hinge screw (not shown) as a rotation center. The hinge 10 can adjust the angle formed by the planes 12 and 13 to an arbitrary angle by rotating the plane 13 around the hinge screw with the hinge screw as the rotation center. In the flat surface 12, a mounting hole 12a into which a mounting screw 21 (see FIG. 4) described later is inserted.
Are formed.

FIG. 4 is a perspective view of the weighing device 1 as viewed from above. The casing 7 of the display operation device 4 is attached to a mounting screw hole (not shown) formed in the lower main body housing 2b through a through hole 20 formed in the upper main body housing 2a and a mounting hole 12a formed in the flat surface 12. By screwing the screw 21, it is attached to and detachable from the main body housing 2. Here, the hinge 10 having the mounting hole 12a and the mounting screw 21 realize a rotation connection mechanism 23.

In the present embodiment, the hinge 10 attached to the display / operation device 4 is attached to the main body housing 2 with the mounting screw 21 so that the display / operation device 4 is attached to the main body housing 2 and the display / operation device 4 With respect to the main body housing 2 can be realized by common components.

The display operation device 4 is attached to the main body housing 2 by the rotation connection mechanism 23, so that the display operation device 4 is moved from the first use position shown in FIG. 5 to the second use position shown in FIG.
Through the (second position), the inclination angle is continuously changed around the hinge 10 within the range up to the connection position (first position) shown in FIG.

In this embodiment, a general-purpose hinge 10 is used. For this reason, when the lower end of the display operation device 4 is set to be free while being attached to the main body housing 2, the display operation device 4 is positioned at the connection position shown in FIG. 7 by its own weight. When the display operation device 4 is positioned at the connection position, a work space X is formed between the display operation device 4 and the main body housing 2 to open an upper portion of a rotation connection mechanism 23 described later.

In the present embodiment, when the lower end of the display / operation device 4 is free while being attached to the main body housing 2, the display / operation device 4 is positioned at the connection position shown in FIG. 7 by its own weight. Although the hinge 10 is used, the present invention is not limited to this. For example, even when the lower end of the display operation device 4 is set to be free while being attached to the main body housing 2, the inclination angle of the display operation device 4 does not change. Note that the hinge 10 which requires an external force of a certain degree or more to rotate between the plane 12 and the plane 13 may be used.

As shown in FIG. 3, a tilt stopper mechanism 15 as a positioning member is provided between the pair of hinges 10 on the upper surface of the rear surface of the casing 7. As shown in FIGS. 8 and 9, the tilt stopper mechanism 15 has a stopper holding hole 16 formed in the casing 7.
The stopper holding hole 1 is inserted into the stopper holding hole 16 by fitting both ends 17a protruding outward.
A stopper member 17 having a substantially U-shape that is rotatably held on the casing 7 around the rotation center 6,
It is constituted by a stopper fixing member 18 attached to the main body housing 2.

The portion of the stopper member 17 that is separated from the casing 7 is a fixing portion 17b that is directly fixed by the stopper fixing member 18. Stopper member 1
The holding member 7 is held with such a holding force that the fixing portion 17b is rotated downward by its own weight according to the displacement of the casing 7. That is, unless an external force for rotating the stopper member 17 upward is applied, the fixing portion 17b
Is rotated by its own weight and tries to be located at a position separated from the casing 7.

Below the stopper holding hole 16 of the casing 7, a stopper regulating member 19 for regulating the downward rotation of the stopper member 17 is provided. Accordingly, the rotation of the fixing portion 17b of the stopper member 17 below the stopper restricting member 19 is restricted irrespective of the inclination angle of the casing 7.

The stopper fixing member 18 is formed at such a position as to block the displacement trajectory of the fixing portion 17b of the stopper member 17 due to the rotation of the display operating device 4 with respect to the main body housing 2 (indicated by the dashed line arrow in FIG. 5). Notch 1
8a. The notch 18a is cut out in an arc shape along the outer peripheral surface of the fixing portion 17b of the stopper member 17.

When the fixing portion 17b of the stopper member 17 and the notch portion 18a of the stopper fixing member 18 come into contact with each other, the display operation device 4 is positioned and fixed at the second use position shown in FIG. The display operation device 4 is the second
Display operation device 4
Is located below the lower end of the main body housing 2, and the upper part of the rotation connection mechanism 23 is covered by the display operation device 4.

Further, the main body housing 2 of the present embodiment has a droplet prevention cover which covers the upper end of the casing 7 of the display / operation device 4 positioned at the first use position or the second use position from above. 2c is formed.

A cable L extending from inside the main body housing is connected to the upper rear surface of the casing 7 of the display operation device 4. Cable L uses power supply and display data for LC
D8 and the touch panel 9 and a function of transmitting an input signal from the touch panel 9 to a control unit described later.

In addition, although not particularly shown, the weighing device 1 includes:
A control unit for driving and controlling each unit in the weighing device 1 is provided.
Thereby, the printer, the LCD 8, the touch panel 9,
It becomes possible to drive and control each unit such as a label issuing machine.

In such a configuration, when a product is placed on the plate 3, the weighing device 1 outputs an output value from a load cell unit (not shown) according to the weight of the product placed on the plate 3. The control section calculates the weight data of the product placed on the plate 3 in the control section, and displays the calculated weight data on the LCD 8 and the customer display device 5.

By the way, the installation place of the weighing device 1 and the weighing device 1
The height and the inclination angle of the display / operation device 4 that feel comfortable are different depending on the height and the like of the operator who uses the device.

For example, as shown in FIG. 5, there may be a situation where the weighing device 1 is installed on an installation surface S such as a showcase and the display operation device 4 is used at the first use position. At this time, the portion in contact with the installation surface S of the main body housing 2 is the installation lower end. In this case, since the lower end of the casing 7 is supported by the installation surface S such as a showcase or the like, even if a downward turning force is applied to the display operation device 4 by the operation of the touch panel 9 by the operator, the display is performed. It is possible to provide stable operability of the display operation device 4 without inadvertently changing the inclination angle of the operation device 4.

In the present embodiment, when the lower end of the casing 7 is free when the display operation device 4 is attached to the main body housing 2, the display operation device 4 shown in FIG.
Is set by the hinge 10 so as to be located at the connection position shown in FIG.

Therefore, for example, assuming a situation in which the front side of the main body housing 2 is installed and used in accordance with the end face T of the showcase, the display operation device 4 is displaced by its own weight, and the display operation device 4 shown in FIG. 1 becomes more vertical than the use position.

At this time, in this embodiment, since the tilt stopper mechanism 15 is provided, the fixing portion 17b of the stopper member 17 provided on the display operation device 4 is also displaced in accordance with the displacement of the display operation device 4. . Specifically, the stopper member 17 rotates with respect to the casing 7 by its own weight such that the fixing portion 17b faces downward. On the other hand,
The rotation of the stopper member 17 is controlled by the stopper regulating member 19.
As a result, it is regulated so as not to rotate downward (toward the casing 7) from the stopper regulating member 19. For this reason, as shown in FIG. 5 or FIG. 6, the stopper member 17 protrudes outward from the casing 7, and
Is displaced along an arc-shaped trajectory with the displacement of.

On the other hand, since the notch portion 18a is formed at a position that blocks the displacement locus of the fixing portion 17b of the stopper member 17, the notch portion 18a is displaced along an arc-shaped locus as the display operation device 4 is displaced. The stopper member 17 stops at a position where the fixing portion 17b contacts the notch portion 18a of the stopper fixing member 18. Thus, the display operation device 4 can be fixed to the second use position shown in FIG. 6 without special attention.

In the second operating position shown in FIG. 6, the fixing portion 17 of the stopper member 17 is
Since a force acts on the cutout 18a of the stopper fixing member 18 so as to press b, the display operation device 4 is stably fixed at the connection position.

The fixing portion 17b of the stopper member 17
Is pressed against the notch 18a of the stopper fixing member 18 by the operator.
Is operated, the inclination angle of the display operation device 4 is increased even when a downward pivoting force is applied to the display operation device 4 by the operation of the touch panel 9 by the operator. Is not inadvertently changed, so that stable operability of the display operation device 4 can be provided.

The tilt stopper mechanism 15 allows the display operation device 4 to be releasably fixed at the second use position covering the rotary connection mechanism 23 from above, so that a general-purpose hinge 10 is used. Also in this case, even when the touch panel 9 is operated in use and an external force in the pressing direction for rotating the display operation device 4 downward is applied to the display operation device 4, the inclination angle of the display operation device 4 is inadvertently changed. Can be prevented.

As described above, the hinge 10 which requires an external force of a certain degree or more to rotate between the plane 12 and the plane 13 is used.
Even when the touch panel 9 is operated, when an external force in the pressing direction for rotating the display operation device 4 downward is applied to the display operation device 4 by operating the touch panel 9, the inclination angle of the display operation device 4 is caused by the external force. There is a concern that this may inadvertently change.

In the present embodiment, the display operation device 4 is releasably fixed at the second use position by the tilt stopper mechanism 15, so that the display operation device 4 is independent of the performance of the hinge 10 used. It is possible to prevent an inadvertent change in the inclination angle.

Further, as shown in FIG.
Can be installed in a state where the lower end of the main body housing 2 is lower than the installation lower end of the main body housing 2.
The height of the display operation device 4 in the height (vertical) direction is made longer than the height (vertical) direction of the main body housing 2 without increasing the height of the display operation device 4 to ensure the visibility of the display operation device 4. In addition, the operability of the display operation device 4 can be ensured by setting the inclination angle of the display operation device 4 to an arbitrary position.

At the time of use, the second position from the first use position
Is positioned between the use positions of the rotary connection mechanism 23.
Is covered by the casing 7, so that the rotation coupling mechanism 23 is prevented from being deteriorated in function due to dirt or corrosion caused by, for example, gravy dripped from the placing plate 3, thereby protecting the rotation coupling mechanism 23. Can be planned.

In addition, in the present embodiment, the hinge 10 for adjusting the tilt angle of the display / operation device 4 forms a part of the rotation connection mechanism 23, The hinge 10 can be protected.

During maintenance or the like, when the failure of the display / operation device 4 occurs, the display / operation device 4 can be detached from the main body housing 2 according to the following procedure. .

At the time of connection (including detachment) of the display / operation device 4, first, as shown in FIG. 7, the stopper member 17 is flipped up, and the display / operation device 4 is connected by the stopper member 17 and the stopper fixing member 18. Release the fixation. Thereby, as shown in FIG. 7, the connection position where the lower end of the casing 7 is lower than the lower end of the main body housing 2 and the working space X is formed above the rotary connection mechanism 23, as shown in FIG. Displace to

When the display operation device 4 is displaced to the connection position, the mounting screw 21 can be visually confirmed from above through the work space X as shown in FIG.

In this state, the display operation device 4 can be easily detached from the main body housing 2 by working from above the hinge 10 and removing the mounting screw 21.

When the display operation device 4 is mounted on the main housing 2, the display operation device 4 can be easily mounted in the reverse procedure of detachment.

Here, in the connecting operation for connecting the display operation device 4 to the main body housing 2, the display operation device 4 is rotated about the substantially horizontal axis with respect to the main body housing 2 by the rotation connection mechanism 10. By positioning the display operation device 4 at the first position, a work space for a connection operation is formed between the main body housing 2 and the display operation device 4.

As a result, the connection operation of the display operation device 4 can be performed from the upper side, so that the connection operation can be facilitated.

When operating the display / operation device 4, the display / operation device is rotated about a substantially horizontal axis with respect to the main body housing by the rotation connection mechanism 10 to position the display / operation device at the second position. , The work space is shut off, and the display operation device is
Positioning is performed so as not to be moved with respect to the operation at the position, so that the work space which is unnecessary at the time of normal use is made inconspicuous and the aesthetic appearance of the weighing device is improved, and the operation at the second position is performed. Can be improved in stability.

Further, at the second position, the upper side of the work space X is covered with the display / operation device 4, so that the accumulation of foreign substances in the work space is suppressed. Can be reduced.

In addition, when the display operation device 4 rotatably connected to the main body housing 2 by the hinge 10 is positioned at the second use position, the display operation device 4 is fixed by the tilt stopper mechanism 15 so that In the second use position, stable operability can be provided even when an external force acts in the rotation direction by the operation of the operator. Thereby, for example, since it can be realized by the general-purpose hinge 10, the cost performance of the weighing device 1 can be improved.

In the present embodiment, the main body housing 2 is formed by vertically fitting the upper main body housing 2a and the lower main body housing 2b. However, the present invention is not limited to this. The main body housing 2 may be formed by fixing the housing 2a and the lower main body housing 2b with a hook or the like.

Next, a second embodiment of the present invention will be described with reference to FIGS. This embodiment is different from the first embodiment in the tilt stopper mechanism. Note that the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. The same applies hereinafter.

FIGS. 10 to 12 are side views showing a partially enlarged scale device according to the second embodiment of the present invention. The tilt stopper mechanism 30 as a positioning member of the present embodiment includes a cam shaft 31 extending substantially horizontally on the back surface side of the casing 7, and a plate cam 3 attached to the cam shaft 31.
2 and a stopper fixing member 18. The tip of the plate cam 32 and the notch 18a of the stopper fixing member 18 are formed so as to fit each other.

In use, the same effects as in the first embodiment can be obtained by rotating the cam shaft 31.

Next, a third embodiment of the present invention will be described with reference to FIGS. This embodiment is different from the first embodiment in the tilt stopper mechanism. Note that the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

FIG. 13 and FIG. 14 are side views showing a partially enlarged scale device according to the third embodiment of the present invention. The tilt stopper mechanism 40 as a positioning member according to the present embodiment is constituted by a known knock mechanism used for, for example, inserting and removing a pen tip of a ball-point pen. Although the detailed illustration and description are omitted because it is a known technique, the tilt stopper mechanism 40 is
A projection 41 which can be displaced along a direction projecting outward from the back side of the spring, a spring 42 for urging the projection 41 outward,
The holding member 43 is configured to switchably hold the protrusion between a fixed position shown in FIG. 13 and a release position shown in FIG. 14, and the stopper fixing member 18. Although not particularly shown, claws are formed on the outer peripheral surface of the projection 41 and the inner peripheral surface of the holding member 43 so as to releasably engage with each other. When the projection 41 is at the fixed position, the claws are engaged with each other. When the projection 41 is at the release position, the engagement between the claws is released. The engagement / release of the claws is switched, for example, every time the operator presses the projection.

In such a configuration, as shown in FIG. 13, when the display operation device 4 is used at the use position (second position), the projection 41 is set at the fixed position. Also, when performing operations such as connecting the display operation device 4 removed at the time of maintenance, the projection 41 is set to the release position.
As shown in FIG. 4, the display operation device 4 can be located at the connection position (first position). Thus, the operator can switch the displacement of the display operation device 4 to the connection position by the tilt stopper mechanism 40 or the fixing at the second use position only by pressing the projection 41.

In these embodiments, the stopper member 17, the plate cam 32, and the projection 41 are provided on the display / operation device 4. However, the present invention is not limited to this, and these members may be provided on the main body housing 2. You may.

In the present embodiment, the display operation device 4
In order to fix the inclination angle of the stopper, the stopper member 17, the plate cam 32, and the stopper fixing member 18 for fixing the tips of the projections 41 are provided. However, the present invention is not limited to this, and the display is performed without providing the stopper fixing member 18. The inclination angle of the operation device 4 may be directly fixed by the wall surface of the main body housing 2.

[0076]

According to the weighing device of the first aspect, at the time of connecting the display operation device to the main body housing, the display operation device is rotated about the horizontal axis with respect to the main body housing by the rotation connection mechanism. By pivoting the display operation device to the first position, a work space for the connection operation is formed between the main body housing and the display operation device. Since the connection operation can be performed, the connection operation can be facilitated. When operating the display operating device, the display operating device is rotated about a substantially horizontal axis with respect to the main body housing by the rotation connection mechanism to position the display operating device at the second position. The upper part of the device is covered, and the display operating device is positioned so as to be immovable with respect to the operation in the second position by the positioning member, so that a work space which is unnecessary in normal use is inconspicuously weighed. The aesthetic appearance of the device can be improved, and the stability at the time of operation at the second position can be improved. Further, in the second position, the display operation device covers the upper portion of the rotary connection mechanism, so that accumulation of foreign matter in the work space is suppressed, so that the burden on the operator for cleaning the weighing device is reduced. Can be planned.

According to the second aspect of the present invention, in the weighing apparatus according to the first aspect, when connecting the display operation device, the display operation device is attached to the main body housing by tightening a mounting screw via a hinge. By rotatably connecting the display and operation device, it is possible to simplify operations such as connection and detachment of the display operation device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a weighing device according to a first embodiment of the present invention.

FIG. 2 is a rear perspective view thereof.

FIG. 3 is a rear perspective view showing the display operation device.

FIG. 4 is a perspective view of the weighing device as viewed from above.

FIG. 5 is a side view showing a part of the weighing device.

FIG. 6 is a side view showing a part of the weighing device.

FIG. 7 is a side view showing a part of the weighing device.

FIG. 8 is a perspective view showing a tilt stopper mechanism.

FIG. 9 is a perspective view of the weighing device from which the display operation device is detached as viewed from above.

FIG. 10 is a side view showing a part of a weighing device according to a second embodiment of the present invention.

FIG. 11 is a side view showing a part of the weighing device.

FIG. 12 is a side view showing a part of the weighing device.

FIG. 13 is a side view showing a part of a weighing device according to a third embodiment of the present invention.

FIG. 14 is a side view showing a part of the weighing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weighing device 2 Main body housing 3 Placement plate 4 Display / operation device 10 Hinge 15 Positioning member 21 Mounting screw 23 Rotating connection part 31 Positioning member 40 Positioning member X Work space

Claims (2)

[Claims] 1. A weighing apparatus having a weight measuring mechanism for measuring the weight of a subject placed on a plate in a main body housing, a display unit for displaying information and an operation unit for performing various operations. A display operation device having a flat shape, and the display operation device is connected to the main body housing so as to be rotatable about a substantially horizontal axis in a state of extending below a lower end of installation of the main body housing. A first position for creating a working space for connection work with the display operation device between the main body housing and the display operation device, and a display position when the display operation device rotates upward. A rotation connection mechanism that selectively positions the display operation device at a second position where the upper portion is covered by the operation device; and a position immovable position of the display operation device with respect to operation at the second position. And a positioning member. 2. The weighing device according to claim 1, wherein the rotation connection mechanism has a hinge attached to the display operation device, and an attachment screw for fixing the hinge to the main body housing.