JP4343755B2 - Weighing machine - Google Patents

Description

  The present invention relates to a weighing machine that supplies an oil liquid such as gasoline or light oil to a fuel tank of a vehicle or the like, and relates to a weighing machine including a cap holder for the fuel tank.

  Conventionally, as an example of a fuel supply system, there is a self-service fuel supply system in which a customer himself / herself operates a metering device as a fuel supply device to perform a fuel supply operation. In this self-service refueling system, the customer himself removes the fuel tank cap of the fuel tank of the vehicle, etc., inserts the cylinder tip of the fuel nozzle provided in the weighing machine into the fuel filler opening, and opens the fuel nozzle to open the fuel tank. Add oil.

  By the way, in the measuring machine used in the self-service fueling system described above, it is not necessary to know where the fueling port cap (hereinafter referred to as the cap) removed from the fueling port of the fuel tank is placed, and the refueling operation is completed. There is a measuring machine with a cap holder in the main body of the measuring machine so as not to forget to attach a cap to the filler port.

  In addition, a cap detector that detects the placement or non-placement of the cap is provided in this cap holder, and a signal output from the cap detector is used to warn of forgetting to attach the cap at the end of the refueling operation. It is also considered to be used for controlling a weighing machine.

JP 2003-26298 A

  However, the provision of the cap detector for the cap holder has the following problems.

  Usually, the cap detector is provided integrally with the cap holder. However, the cap, which is the detection target of the cap detector, is attached to the filler opening until just before refueling. The cap detector provided in the cap holder employs an explosion-proof structure for explosion-proof and safety reasons. For this reason, the use of an explosion-proof structure not only increases the cost, but also restricts the design of the cap holder, and the connection of the signal line to the detector and the connection of the signal line from the detector become complicated due to the adoption of the explosion-proof structure. There were problems such as poor maintainability.

  The present invention has been made in view of the above-described problems, and it prevents a cost increase due to the use of an explosion-proof structure without impairing safety and performance, and a cap retainer that is improved in maintainability ( An object is to provide a weighing machine equipped with a cap holder.

In order to solve the above-described problems, a weighing machine according to the present invention is a weighing machine including a cap holder for a fuel filler opening, and includes a holding unit that holds the cap, and the cap is the holding unit. The cap holding portion is provided outside the weighing machine housing, and the cap filler port screwing portion is inserted therethrough. The detection unit is provided at a position higher than the height of the through-hole portion of the cap holding portion while securing a cap removal / accommodation space, and the detection range of the cap is inserted through the detection range. It is set within the range of the hole .

In the weighing machine of the present invention , the holding unit is further positioned in the fuel vapor staying range on the lower side in the height direction of the weighing machine housing, and the detection unit is placed in the fuel vapor non-holding range above the fuel vapor staying range. It is characterized by being positioned .

Further, the weighing machine according to the present invention is further characterized in that the detection unit is provided in a fuel vapor non-intrusion part partitioned in the weighing machine housing so as to face the outside through a detection signal transmission part .

  According to the weighing machine of the present invention, the detection unit can electrically detect whether or not the cap is held by the holding unit in a non-contact manner. It is not necessary to expose the range and the outside of the main body of the weighing machine, and the detection unit can be protected from dirt, failure, etc. due to the adhesion of vapor, and the maintainability and safety are improved. Moreover, since it becomes possible to make a detector into a non-explosion-proof structure, the cost increase by adoption of an explosion-proof structure can be prevented, without impairing safety | security and performance.

  Furthermore, the cap holding portion includes a through hole portion through which the oil filler screw portion of the cap is inserted, and the detection range of the cap by the detection portion is set within the range of the through hole portion. Therefore, it is possible to make a large difference in the received signal of the detection unit between the case where it is held in the case and the case where it is not held, to prevent erroneous detection, and to improve the detection performance.

  Hereinafter, a weighing machine according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a weighing machine according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of the inside of the housing of the weighing machine shown in FIG.

  In FIG. 1, a weighing machine 1 according to the present embodiment includes a lower housing part 11 and an upper housing part 13 supported above with a space from the lower housing part 11 via a column part 12. A main body (measuring machine housing) 10 is provided. And the lower housing | casing part 11 has the structure further divided | segmented into the apparatus accommodating part 11A and the indicator part 11B in the up-down direction.

  The weighing machine 1 of the present embodiment has the same appearance device configuration on the front and back of the weighing machine body 10. As shown in FIG. 2, two fueling points (fueling vehicle stop points) where the fueling operation can be performed independently are formed in front of the front surface and the rear surface of the weighing machine body 10, respectively. Yes. Here, the configuration of each part of the weighing machine body 10 will be described based on the front external configuration of the weighing machine body 10 viewed from one refueling point, and the description of the configuration of the back surface of the weighing machine body 10 will be omitted.

  In the equipment housing portion 11A of the lower housing portion 11, a cylinder tip is inserted into a fuel supply port of a fuel tank (supplied body) of a vehicle or the like, and an oil supply nozzle 20 that can be manually operated to supply and shut off an oil liquid by operating an operation lever. Is disposed. In the illustrated metering machine 1, the oil supply nozzle 20 is provided for each oil type so that at any one oil supply point, any of the three oil types of high-octane gasoline, regular gasoline, and light oil can be supplied. Correspondingly, three oil supply nozzles 20-1, 20-2 and 20-3 are arranged. From this relationship, the device storage portion 11A is provided with three nozzle hooks 21-1, 21-2, 21-3 corresponding to these three oil supply nozzles 20-1, 20-2, 20-3. Yes. Each nozzle hook 21-1, 21-2, 21-3 is provided with a nozzle switch (not shown) that opens and closes in conjunction with the hooking of the fuel nozzle 20.

  As shown in FIG. 2, the device storage portion 11 </ b> A has a pump or the like that supplies oil to each oil supply nozzle 20 in correspondence with each of the oil supply nozzles 20-1, 20-2, and 20-3. Housed therein are a liquid feeding device 22 and a flow rate measuring device 23 such as a flow meter for measuring the amount of oil discharged from the oil supply nozzle 20 (that is, the amount of oil supplied). Then, after the measurement by the flow measuring device 23, the oil liquid flowing out from the flow measuring device 23 is guided from the device storage portion 11A into the side column portion 12 without passing through the indicator portion 11B. The corresponding oiling nozzle 20-is led to the upper housing part 13 through a pipe extending in the column part 12 and is connected to the corresponding hose 24-1, 24-2, 24-3 led out from the upper housing part 13. 1, 20-2, 20-3. In addition, in the equipment housing part 11A of the lower housing part 11, wiring such as a power line and SS-LAN laid in the base of the gas station is led from the bottom side to the inside.

  On the other hand, the display unit 11B of the lower housing unit 11 is provided with a display unit 25 for displaying the amount of oil to be supplied, the amount of oil to be supplied, and the unit price of oil supply, the setting unit 26 for setting the content of fuel supply by self-refueling work, and the like. Has been. In addition, a weighing machine control device 28 that controls each part of the weighing machine 1 is provided inside the display unit 11B of the lower casing unit 11. The inside of the indicator unit 11B provided with the weighing machine control device 28 is moved from the inside of the column unit 12 to the inside of the indicator unit 11B by the inside of the column unit 12 in which the above-described piping is extended and the column unit wall unit as a vapor barrier. It is defined so that the paper does not flow. In addition, in the equipment storage section 11A in the same lower housing section 11, the vapor barrier 40 (see FIG. 2) provided at the boundary between them prevents the vapor from flowing from the equipment storage section 11A into the display section 11B. It is made. The signal lines between the display unit 11B and the device storage unit 11A are routed by a seal member or the like without impairing the vapor tightness of the vapor barrier 40.

  In addition, a cap 98 removed from the fuel filler port during the self-fueling operation is held at the boundary portion in the height direction between the device housing part 11A and the display unit 11B of the lower housing part 11 of the weighing machine 1 shown in the figure. A cap holder 30 is provided for storing the cap.

FIG. 3 is a configuration diagram of an embodiment of the cap holder.
As shown in FIG. 3, the cap holder 30 includes a dish-shaped holding part 31 on which a cap 98 is placed, and a bowl-like detection disposed above the holding part 31 via a cap removal / storage space 32. The holding portion 31 and the detection portion 33 are integrally connected by a plate-like member 34. The cap-shaped detection unit 33 faces the holding unit 31 and detects whether the cap 98 is placed on the holding unit 31 without contacting the cap 98 (without contact). A sensing unit of the detector 35 is provided. As the sensing unit of the cap detector 35, a non-contact type object detection sensor such as a reflective photosensor or an ultrasonic sensor is used. In addition, the bowl-shaped detection unit 33 is provided with a light-emitting display 36 constituted by, for example, an LED or a lamp, which can function as a location guide for the cap holder 30 itself and a cap attachment forgetting alarm. The signal lines and the power lines of the cap detector 35 and the light emitting display 36 are led out to the outside from the back surface of the bowl-shaped detection part 33 and are directly inside the display part 11B in the lower casing part 11 of the weighing machine body 10. It is connected to the provided weighing machine control device 28 (see FIG. 2).

  Then, as shown in FIG. 2, the cap holder 30 has the back surface of the holding unit 31 opposed to the surface of the device storage unit 11 </ b> A of the lower housing unit 11 in the height direction of the weighing machine body 10 and the back surface of the detection unit 33. Is attached to the weighing machine main body 10 so as to face the display unit 11B surface of the lower casing unit 11.

  As a result, the cap holder 30 is made of vapor from nozzles 21, vaporizers from devices such as the liquid feeding device 22 and the flow rate measuring device 23 provided in the device housing portion 11 </ b> A of the lower housing 11. Even if the holding part 31 is positioned in the fuel vapor staying range on the lower side in the height direction of the weighing machine housing, the detection part 33 including the cap detector 35 and the light emitting indicator 36 is still used as the fuel vapor. It can be located in the fuel vapor non-retention range above the retention range. As a result, the cap holder 30 can protect the detection unit 33 from dirt and failure due to vapor adhesion, improve maintenance, safety, etc., and can adopt a non-explosion-proof structure. .

In the embodiment of the cap holder 30 shown in FIG. 3, the light emitting surface 36a of the light emitting display 36 is provided on the flange surface 33a of the detector 33 so as to be visible from the outside. May be.
FIG. 4 is a configuration diagram of another embodiment of a cap holder provided in the weighing machine body.

  In the case of the cap holder 30 of FIG. 4, the light emitting surface 36 a is provided on the holding portion facing surface 33 b of the detection portion 33 so as to irradiate the cap removal / storage space 32. Furthermore, as another embodiment, a light emitting surface 36a is provided inside the detection unit 33, and light from the light emitting surface 36a is formed on the flange surface 33a and the holding unit facing surface 33b of the detection unit 33 using a reflecting member, respectively. It is also possible to adopt a configuration leading to

  Next, a weighing machine according to another embodiment of the present invention will be described with reference to the drawings. In the description, the same components as those of the weighing machine 1 of the above-described embodiment are denoted by the same reference numerals, and illustration and description thereof are omitted.

FIG. 5 is a cross-sectional view of the display unit of the lower housing unit provided with the cap holder of the weighing machine according to the present embodiment.
FIG. 6 is a rear perspective view of the holding portion of the cap holder.

  In the cap holder 30 of the present embodiment, the detection unit 33 is provided inside the display unit 11B of the lower housing unit 11 of the weighing machine 1, and the holding unit 31 is provided on the outer surface of the display unit 11B of the lower housing unit 11. It is provided.

  The detection unit 33 forms a detection signal-transmitting sealed window 14 on the wall of the display unit 11B, and faces the sealed window 14 inside the display unit 11B so as to be a reflective photosensor, ultrasonic sensor, or the like. A cap detector 35 composed of an object detection sensor having a directivity for such a non-contact type detection signal and a light emitting display 36 composed of LEDs and lamps are provided.

  The holding unit 31 is supported by a support arm 37 provided on the outer surface of the display unit 11B, and an oiling port screwing portion 98a of the cap 98 can be passed through the mounting surface of the cap 98. A through-hole portion 38 is formed on which the large-diameter operation portion 98b is engaged with the screwing portion 98a. The holding portion 31 is positioned below the sealed window portion 14, and the detection direction of the cap 98 by the cap detector 35 is set to be within the range of the through hole portion 38 formed in the holding portion 31. ing. The holding unit 31 is configured so that a part of the holding unit 31 is not located within the detection range of the cap 98 by the cap detector 35 (so as not to inhibit detection of the cap 98 by the cap detector 35). A notch 39 is provided on the base end (display unit 11B side) portion.

  According to the weighing machine 1 of the present embodiment, since the cap detector 35 is provided inside the display unit 11B, the detection unit 33 can be protected from dirt and failure due to vapor adhesion, and maintainability. In addition, safety and the like can be improved, and a non-explosion-proof structure can be achieved. In addition, when an infrared sensor that detects the cap 98 by projecting infrared rays (sending outgoing signals) and detecting reflected light (receiving reflected signals) to the cap detector 35 is used, When there is no cap 98, the infrared ray (emitted signal) is configured to pass through the holding portion 31 by the through-hole portion 38, and therefore, detection is performed depending on whether the cap 98 is held by the holding portion or not. A large difference can be caused in the reflected light (reflected signal) received by the unit 33, erroneous detection can be prevented, and the detection performance can be improved.

It is a front view of the weighing machine by one embodiment of the present invention. It is explanatory drawing inside the housing | casing of the weighing machine shown in FIG. It is a block diagram of one Example of a cap holder. It is a block diagram of another Example of a cap holder. It is sectional drawing of the indicator part of the lower housing | casing part in which the cap holder of the weighing machine by this Embodiment was provided. It is a back perspective view of the holding part of a cap holder.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Weighing machine 10 Weighing machine main body 11 Lower housing part 11A Equipment storage part 11B Display part 12 Column part 13 Upper housing part 14 Sealed window part 20 Oil supply nozzle 21 Nozzle hook 22 Liquid feeding equipment 23 Flow measuring instrument 24 Hose 30 Cap holder DESCRIPTION OF SYMBOLS 31 Holding part 32 Cap removal / storage space 33 Detection part 34 Plate-shaped member 35 Cap detector 36 Light emission indicator 37 Support arm 38 Through-hole part 39 Notch part 40 Vapor barrier 98 Cap

Claims (3)

A weighing machine equipped with a cap holder for a fuel filler port,
Cap holder
A holding part for holding the cap;
A detection unit that electrically detects whether or not the cap is held by the holding unit in a non-contact manner;
The cap holding part is provided outside the weighing machine casing , and includes a through-hole part through which the oil filler screw part of the cap is inserted.
The detection unit is provided at a position higher than the through hole portion height position of the cap holding portion while securing a cap removal / accommodation space, and the detection range of the cap is set within the range of the through hole portion. Weighing machine characterized by that. The holding portion is positioned in the fuel vapor retention range on the lower side in the height direction of the weighing machine housing;
The detector is positioned in the fuel vapor non-retention range above the fuel vapor retention range.
The weighing machine according to claim 1, wherein: The detection unit is provided in a fuel vapor non-intrusion part partitioned in the weighing machine housing so as to face the outside through a detection signal transmission part.
The weighing machine according to claim 1 or 2, characterized by the above-mentioned .

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