JP6486398B2 - Electric fuser - Google Patents

Description

  The present invention relates to an electric fusion device for electric fusion of an electric fusion joint.

  Conventionally, metal pipes subjected to anticorrosion treatment have been used as pipes (main pipes) for gas supply or water supply buried under the road. In order to connect the metal tubes, the metal tubes are threaded and the threaded metal tubes are connected. However, metal pipes connected in this way are vulnerable to earthquakes. In addition, the metal tube also has a problem in durability due to corrosion of the metal.

  In recent years, resin tubes formed of resins such as polyethylene (PE), cross-linked polyethylene (cross-linked PE), and polybutene tend to be used instead of metal tubes. When the resin pipe is used as a gas or water supply pipe, a resin pipe having a diameter of 25 to 300 mm is mainly used.

  To connect the resin pipes, insert a resin pipe into a joint (electric fusion joint) in which a resistor (heating wire) such as nichrome wire or nickel wire is embedded, and heat the resistor by flowing an electric current through the electric fuser. The resin pipe and the joint are fused (electrical fusion). An engine generator is used as a power source for supplying electric power to the fuser in order to heat the resistor of the electric fusion joint. The electric fusion joint is formed of resin in the same manner as the resin pipe. As the electric fusion joint, an electric fusion joint having a diameter corresponding to the diameter (nominal diameter) of the resin pipe is used. For example, an electric fusion joint for welding two resin pipes, an electric fusion joint for welding three resin pipes, an electric fusion joint for welding resin pipes having the same diameter, and a resin pipe having different diameters. An electric fusion joint or the like is used. The connection between the resin pipes by electric fusion is superior to the connection between the threaded metal pipes in terms of airtightness (watertightness) and is resistant to earthquakes.

  Small diameter (for example, 10 to 20 mm) resin pipes are also used for hot water supply or water supply piping of buildings (for example, offices or factories) such as steel frames and reinforced concrete, or apartment houses. In this case as well, a temporary commercial power source is used as a power source for connecting the resin tubes to each other by an electric fusion joint and supplying electric power to the fusion device in order to heat the resistor of the electric fusion joint.

  When a temporary commercial power source is used to supply power to the fuser, it is necessary to provide a power cord in the fuser, and extension wiring from the temporary power source to the welding site is often required. On the other hand, a fuser with a built-in battery (battery power type fuser) has also been proposed (for example, Patent Document 1).

Japanese Patent Laid-Open No. 9-303662

  Since the battery-powered fuser does not have a power cord and does not require an extension wiring, it has the advantage of being movable and easy to use. However, battery powered fusers can run out of battery during use. For example, if the battery of the battery-powered fuser runs out during electrofusion and is not in an environment where the battery can be charged or there is no spare battery with sufficient remaining battery capacity, electrofusion cannot be performed. In some cases, the work of connecting the resin pipes may be cancelled.

  An object of the present invention is to provide an electric fuser that can prevent the battery from running out during use.

  An electrofusion device according to the present invention includes a first battery, a storage unit that stores an electrofusion record of an electrofusion joint, a control unit that controls electric power supplied from the first battery, and displays information. A display unit configured to determine whether or not a desired number of electrofusion joints can be electrically fused based on the remaining battery level of the first battery and the electrofusion record. The determination result is displayed on the display unit.

  Preferably, the control unit converts the remaining battery capacity of the first battery into the number of electrofusion joints that can be electrofused based on the electrofusion record.

  Preferably, the apparatus further includes a second battery that supplies power to the control unit, and a first charger that is connected to the first battery and charges the second battery.

  Preferably, a standby current is supplied from the first battery to the control unit, and the control unit further includes a cutoff unit that cuts off the standby current when the control unit does not operate for a predetermined period or longer.

  Preferably, the battery pack further includes a charging terminal connected to an external charger for charging the first battery.

  Preferably, it further has a power output terminal for outputting power from the first battery to the outside.

  Preferably, it further has a second charger connected to an external power source for charging the first battery. The first battery is removable from the electric fuser or is built in the electric fuser.

  The control unit calculates the fusion energy consumed by the electric fuser on the basis of the past record recorded in the electric fusion record, and calculates the fusion energy and the remaining battery level of the first battery. Depending on the comparison result, information on advice on whether to charge or replace the first battery may be displayed on the display unit.

  According to the present invention, whether or not a desired number of electric fusion joints can be fused is determined based on the remaining battery level and the electric fusion record of the first battery. Can be avoided.

It is a circuit diagram showing a 1st embodiment of an electric fusion machine by the present invention. It is a figure which shows an example of the operation display part of FIG. It is a figure which shows an example of the electrofusion recording stored in EEPROM of FIG. It is a flowchart of operation and a display of the electric fuser of FIG. It is a circuit diagram which shows 2nd Embodiment of the electric fuser by this invention. It is a circuit diagram which shows 3rd Embodiment of the electric fuser by this invention. It is a flowchart of the automatic interruption | blocking of the electric fuser of FIG. It is a circuit diagram which shows 4th Embodiment of the electric fuser by this invention. It is the schematic of the extension cable connected to the terminal of the electric fuser of FIG. 8, and an external charger. It is a circuit diagram which shows 5th Embodiment of the electric fuser by this invention. It is a circuit diagram which shows 6th Embodiment of the electric fuser by this invention.

Embodiments of an electric fuser according to the present invention will be described in detail with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals.
FIG. 1 is a circuit diagram showing a first embodiment of an electric fuser according to the present invention, FIG. 2 is a diagram showing an example of an operation display unit of FIG. 1, and FIG. 3 is a diagram of FIG. FIG. 4 is a diagram showing an example of an electrofusion record stored in an EEPROM, and FIG. 4 is a flowchart of the operation and display of the electrofusion device of FIG. In FIG. 1, an electric fuser 1 is a battery-powered resin pipe electric fuser, and electrically fuses an electric fusion joint 2 to a resin pipe (not shown).

  The electric fuser 1 includes a battery pack 11, a main body 12, a cable 13a, and a cable 13b. The battery pack 11 is detachable from the electric fuser 1 (main body 12), and has a battery power source 21 and a microcomputer 22 housed in a resin case (not shown). The battery power source 21 is an example of a first battery, and includes, for example, one cell (primary battery or secondary battery) or a plurality of cells connected in series in at least one row. The electric capacity (when 100% charged) of the battery power source 21 is, for example, 200 WH. The microcomputer 22 has a communication function with the outside (main body 12) in addition to various safety functions such as overdischarge protection and overcharge protection. The microcomputer 22 detects the voltage of the battery power source 21 and holds the voltage of the battery power source 21 and the remaining battery level (AH) as numerical data in an attached memory (not shown). Further, the microcomputer 22 sends the voltage of the battery power source 21 and numerical data of the remaining battery level to the main body 12 in response to a request from the main body 12.

  The main body 12 includes a main switch 23, a relay 24, an FET 25, an air temperature sensor 26, an operation display unit 27, a communication unit 28, a shunt resistor 29, a terminal 30, a terminal 31, and an interface (I / F). ) 32, EEPROM 33, and control unit (CPU) 34. The control unit 34 is driven via a control unit power source (not shown) such as a DC / DC converter that operates on the battery power source 21. An example of the power supply for the control unit is shown in FIG.

  The main switch 23 is turned on to supply power from the battery power source 21 to the main body 12 when the electric fuser 1 is used, and power is supplied from the battery power source 21 to the main body 12 when the electric fuser 1 is not used. Turned off to avoid feeding. The relay 24 is turned on or off by the control unit 34 according to the operation of the operation display unit 27 when the main switch 23 is on. When the relay 24 is turned on, the electric fusion of the electric fusion joint 2 is started.

  The FET 25 is a switching element that operates when both the main switch 23 and the relay 24 are on. The FET 25 outputs PWM pulse power to the electric fusion joint 2 by turning on and off the power supplied from the battery power source 21 and performing pulse width modulation (PWM).

  The temperature sensor 26 detects the outside air temperature and generates an air temperature detection signal. The temperature detection signal is converted into digital data by an A / D converter (not shown). This digital data is converted into temperature data by the control unit 34, and the temperature data is stored in the EEPROM 33 by the control unit 34. .

  As shown in FIG. 2, the operation display unit 27 starts the electric fusion of the display unit 27 a for displaying information, the battery check button 27 b for checking the electric capacity of the battery power source 21, and the electric fusion joint 2. And an emergency stop button 27d for stopping the electric fusion of the electric fusion joint 2 in an emergency manner. The operation display unit 27 may further include a numeric keypad for inputting numerical values, and may be configured to be able to input characters.

  In response to an instruction from the control unit 34, the communication unit 28 requests the microcomputer 22 for numerical data of the voltage of the battery power supply 21 and the remaining battery level, and the voltage of the battery power supply 21 and the remaining battery power acquired from the microcomputer 22 in response to the request. The numerical numerical data is sent to the control unit 34. The control unit 34 stores the voltage of the battery power supply 21 and the numerical data of the remaining battery power sent from the communication unit 28 in the EEPROM 33.

  The shunt resistor 29 functions as a current sensor. Therefore, the shunt resistor 29 detects the current flowing through the resistor 2a of the electrofusion joint 2 and generates a current detection signal. The current detection signal is converted into digital data by an A / D converter (not shown). This digital data is converted into current value data by the control unit 34, and the current value data is stored in the EEPROM 33 by the control unit 34. Is done.

  The terminal 30 is a terminal provided for connecting a device such as a personal computer (PC) or a memory such as a USB memory. When a device or a memory is connected to the terminal 30, the control unit 34 outputs an electrofusion recording described later stored in the EEPROM 33 to the device or the memory.

  The terminal 31 is a terminal provided for connecting a barcode reader. When the barcode code information attached to the electric fusion joint 2 is read by the barcode reader connected to the terminal 31, the barcode code information is input to the control unit 34 via the interface 32.

  The EEPROM 33 includes an ID of the electric fuser 1, an electric fusion record, a table indicating the relationship between the voltage value and the remaining battery level, the diameter of an electric fusion joint manufactured by a specific manufacturing company as an initial setting, and the electric The table etc. which show the relationship with the fusion energy consumed by the electric fusion of a fusion joint are stored. The EEPROM 33 is an example of a storage unit. The electrofusion record shown in FIG. 3 shows a predetermined number of electrofusion joints 2 having a predetermined diameter manufactured by a specific manufacturing company (in this case, 50 electrofusion joints 2 having a diameter of 13 mm). The predetermined temperature and the predetermined number of electrofusions having a predetermined diameter and the outside temperature detected by the air temperature sensor 26 when the predetermined number of electrofusion joints 2 having a predetermined diameter are electrofused. It includes the fusion energy (WH) consumed when the welded joint 2 is electrically fused. For example, the fusion energy of the electrofusion record shown in FIG. 3 corresponds to the fusion energy consumed per day. The electrofusion record may be any electrofusion record related to the manufacturer, the diameter, the number, the outside air temperature during electrofusion, and the fusion energy. For example, in the case of electrofusion recording, the date of electrofusion welding of one electrofusion joint 2, the diameter of one electrofusion joint 2 electrofused, and the electricity of one electrofusion joint 2 The outside air temperature detected by the air temperature sensor 26 at the time of fusion and the fusion energy consumed when one electric fusion joint 2 is electrically fused may be included. The fusion energy consumed when the electric fusion joint 2 is electrofused is calculated by the control unit 34 based on the voltage data of the battery power source 21 obtained from the microcomputer 22 before and after the fusion and the numerical data of the remaining battery level. be able to. Further, the fusion energy consumed when the electric fusion joint 2 is electrofused is represented by the numerical data of the voltage of the battery power source 21 obtained from the microcomputer 22 before and after the fusion, the shunt resistance during the energization time of the resistor 2a. It may be calculated by the control unit 34 based on the product of the average value of the current values detected by 29 and the energization time. The energization time of the resistor 2 a is set in advance for each type (diameter and manufacturing company) of the electrofusion joint 2. Further, the present invention relates to a temperature correction code for correcting the fusion time with the resistance value of the resistor 2a, the applied voltage of the resistor 2a, the energization time of the electric fusion joint 2 of the resistor 2a, and the temperature correction coefficient stored in the EEPROM 33. The information is included in the code information of the bar code attached to the electrofusion joint 2 as will be described later.

  The fusion energy consumed when the electric fusion joint 2 is electrically fused is different for each temperature. For example, the fusion energy consumed when the electric fusion joint 2 is electrofused when the temperature is 5 ° C. is consumed when the electrofusion joint 2 is electrofused when the temperature is 30 ° C. Greater than the fusion energy. In addition, the fusion energy consumed when an electric fusion joint having a predetermined diameter (for example, 13 mm) is predetermined by a predetermined manufacturer is different because impurities contained in the electric fusion joint are different. This is different from the fusion energy consumed when an electric fusion joint having the predetermined diameter is electrofused by another manufacturing company. By using the electrofusion record as the electrofusion record related to the manufacturer of the electrofusion joint as in this embodiment, it is consumed when the electrofusion joint having a predetermined diameter is electrofused. Energy can be calculated for each manufacturing company. For this reason, it is possible to more accurately determine whether or not the desired number of electrical fusion joints (for example, the number of electrical fusion joints that perform electrical fusion per day) can be fused. it can.

  The control unit 34 controls power supplied from the battery power source 21 to the main body 12. In addition, the control unit 34 determines whether or not the desired number of electrical fusion joints (for example, the number of electrical fusion joints that perform electrical fusion per day) can be electrically fused. A determination is made based on the remaining amount and the electrofusion recording, and the determination result is displayed on the display unit 27 a of the operation display unit 27. For example, the control unit 34 records the fusion energy consumed by the fuser 1 per day (the number of electrofusion joints having a predetermined diameter for performing electrofusion per day) in the electrofusion record. Calculated based on past results (for example, fusion energy consumed to fuse a predetermined number of electrofusion joints having a predetermined diameter at a predetermined temperature), and calculated fusion energy and battery power Information on advice on whether to charge or replace the battery power source 21 is displayed on the display unit 27a of the operation display unit 27 in accordance with the comparison result with the remaining battery level of 21.

  In the present embodiment, the control unit 34 determines the remaining battery level of the battery power source 21 based on the voltage value data, and stores the calculated remaining battery level data in the EEPROM 33. The determination of the remaining battery level is performed using, for example, a table indicating the relationship between the voltage value and the remaining battery level.

  Further, in the present embodiment, the control unit 34 converts the remaining battery capacity of the battery power source 21 into the number of electrofusion joints 2 having a predetermined diameter that can be electrofused based on the electrofusion record. The converted number is displayed on the display unit 27a of the operation display unit 27. Conversion of the number of electrofusion joints 2 having a predetermined diameter that can be electrofused is necessary, for example, to electrofuse one electrofusion joint 2 based on the fusion energy of the fusion record. After calculating the fusing energy, the fusing energy corresponding to the battery remaining amount is divided by the fusing energy required for the electric fusing of one electric fusion joint 2. In this case, the number after the decimal point is rounded down.

  Each of the cables 13a and 13b has one end connected to the main body 12 and the other end having a connector (not shown). The electric fusion joint 2 includes a connector pin (not shown) whose main body is made of resin, to which the connectors of the cables 13a and 13b are respectively connected, and a resistor 2a to which the connector pins are connected. Bar codes (not shown) such as digits and 32 digits are attached. The code information of the bar code attached to the electric fusion joint 2 includes information such as manufacturer name, diameter, serial number, material, resistance value of the resistor 2a, applied voltage of the resistor 2a, energization time, temperature correction code, and the like. including.

  The operation and display of the electric fuser is started by turning on the main switch 23. When the battery check button 27b of the operation display unit 27 is pressed in order to determine whether or not the electric fusion joint 2 having a desired number of predetermined diameters can be fused (step S1), the control unit 34 determines the energy equivalent to the battery remaining amount of the battery power source 21 (step S2). Thereafter, the bar code reader connected to the terminal 31 reads the code information of the bar code attached to the electrofusion joint 2 and inputs the type (caliber) of the electrofusion joint 2. The type of the electric fusion joint 2 can also be input using the operation display unit 27. The operation display unit 27 inputs the number of electrofusion joints 2 used for electrofusion, and the controller 34 obtains temperature data from the EEPROM (step S3). The number of the electric fusion joints 2 that perform electric fusion is input by using, for example, a numeric keypad provided on the operation display unit 27. The input of the number of the electric fusion joints 2 for performing the electric fusion in step S3 may be omitted. For example, the omission of step S3 is performed when the number of the electric fusion joints 2 for performing the electric fusion is one. Is called.

  After that, the control unit 34 collates the fusion records stored in the EEPROM 33 (step S4), and the desired number (for example, the number used in the work for one day) of the electrical fusions at the outside temperature of the obtained temperature data. The total fusion energy consumed when performing electrical fusion of the joint 2 is calculated (step S5). In this case, the control unit 34 acquires and acquires the fusion energy consumed by the electric fusion of one electric fusion joint 2 having a predetermined diameter manufactured by a specific manufacturer based on the fusion record. The product of the fusion energy and the number of the electric fusion joints 2 is calculated as the total battery capacity.

  For example, when the diameter of a specific type of electrofusion joint 2 (such as a specific material of a specific manufacturer) is 20 mm and the outside air temperature is 13 ° C., The fusion energy consumed is a fusion consumed in a predetermined number (for example, 50) of the electric fusion joints 2 at a diameter of 20 mm of the specific type of electric fusion joints 2 and an outside air temperature of 13 ° C. The adhesion energy is extracted from the fusion record, and the extracted fusion energy is divided by a predetermined number (when there are a plurality of corresponding battery capacities consumed by the electric fusion of the electric fusion joint 2, Extract battery capacity.)

  When the fusion energy consumed by the electric fusion of the electric fusion joint 2 is 3WH, when the number of the electric fusion joints 2 to be used is 40, the total battery capacity is 120WH, and the electric fusion joint to be used is used. When the number of 2 is 80, the total battery capacity is 240WH.

  When there is no fusion record of the corresponding outside temperature, the fusion energy consumed by the electric fusion of one electric fusion joint 2 is fused at the outside temperature (for example, 14 ° C.) close to the corresponding outside temperature. It may be extracted from the record. When the fusion energy consumed by the electric fusion of the electric fusion joint 2 corresponding to the diameter of the electric fusion joint 2 and the temperature data stored in the EEPROM 33 is not in the fusion record, the control unit 34 From the table showing the relationship between the diameter of the electric fusion joint manufactured by a specific manufacturing company as an initial setting and the fusion energy consumed by the electric fusion of the electric fusion joint, one electric fusion joint 2 Extract the fusion energy consumed by electric fusion. In this case, the extracted fusion energy may be corrected by the outside air temperature.

  Next, the control unit 34 determines whether or not the energy corresponding to the battery remaining amount is equal to or greater than the total fusion energy (step S6). For example, when the energy corresponding to the battery remaining amount is 200 WH and the number of the electric fusion joints 2 used is 40, the energy corresponding to the battery remaining amount is the total fusion energy (in this case, 120 WH). When the number of the electric fusion joints 2 to be used is 80, the energy corresponding to the remaining amount of the battery is less than the total fusion energy (in this case, 240 WH).

  When the energy corresponding to the battery remaining amount is less than the total fusion energy, the control unit 34 displays a notification of charging or battery replacement on the display unit 27a of the operation display unit 27 (step S7). The notification of charging or battery replacement is an example of a determination result. As a notification of charging or battery replacement, for example, it is displayed with characters “Please charge or replace battery”. Along with this character display or instead of the character display, the remaining battery amount or the number of electrofusion joints 2 that can be electrically fused may be displayed on the display unit 27a of the operation display unit 27. Further, when the cell of the battery power source 21 is a primary battery, notification of battery replacement may be performed (without notification of charging). Thereafter, the battery power source 21 (battery pack 11) is charged or replaced (step S8), and the control unit 34 ends the process.

  On the other hand, when the energy corresponding to the battery remaining amount is equal to or greater than the total fusion energy, the control unit 34 has a sufficient battery remaining amount to perform the electric fusion of the desired number of the electric fusion joints 2. Is displayed on the display unit 27a of the operation display unit 27 (step S9). Guidance indicating that there is sufficient battery power is an example of a determination result. As guidance that there is a sufficient remaining battery capacity, for example, there is a character display of “battery OK”. Along with this character display or instead of the character display, the remaining battery amount or the number of electrofusion joints 2 that can be electrically fused may be displayed on the display unit 27a of the operation display unit 27.

  Thereafter, when the battery check button 27b of the operation display unit 27 is pressed, the battery power source 21 determines whether or not the desired number of the electric fusion joints 2 having the predetermined diameter can be fused. The battery remaining amount check is finished (step S10). Thereafter, one end of the electric fusion joint 2 connected to a resin pipe (not shown) is connected to the connector of the cable 13a and the other end is connected to the connector of the cable 13b. When the battery check button 27b of the operation display unit is pressed to determine whether or not the operation can be continued or the number of electrofusion joints 2 that can be electrofused (step S11), the control unit 34 controls the battery power source 21. Is determined (step S12). Thereafter, the diameter of the electrofusion joint 2 connected to the cables 13a and 13b is determined (step S13). Determination of the diameter of the electric fusion joint is performed by inputting the diameter by the operation display unit 27 or reading out the code information of the barcode attached to the electric fusion joint 2.

  Thereafter, the control unit 34 calculates the fusion energy consumed by the electric fusion of the single electric fusion joint 2 whose diameter has been determined (step S14), and the energy corresponding to the battery remaining amount is equal to or higher than the fusion energy. Is determined (step S15). If the energy corresponding to the remaining battery level is less than the fusion energy, the process proceeds to step S7.

  On the other hand, when the energy corresponding to the battery remaining amount is equal to or higher than the fusion energy, the control unit 34 notifies the battery remaining amount or the number of the electric fusion joints 2 that can be electrically fused to the display unit of the operation display unit 27. 27a is displayed (step S16). As the notification of the number of the electric fusion joints 2 that can be electrically fused, for example, “φ10 = 50 pieces for notifying that 50 electric fusion joints 2 having a diameter of 10 mm can be fused. "Is displayed.

  Thereafter, when the start button 27c of the operation display unit 27 is pressed, the control unit 34 turns on the relay 24, supplies power from the battery power source 21 to the main body 12, and supplies current to the resistor 2a to heat it. (Step S17).

  When a predetermined time (for example, 30 seconds) elapses after the relay 24 is turned on, the control unit 34 turns off the relay 24 (step S18), the code information of the barcode attached to the electric fusion joint 2, the work date and time. The temperature (outside temperature) and the fusing energy are stored in the EEPROM 33 as a fusing record (step S19). If the emergency stop button 27d of the operation display unit 27 is pressed before a predetermined time has elapsed since the relay 24 is turned on, the control unit 34 does not store the fusion record in the EEPROM 33.

  Thereafter, the control unit 34 determines whether or not the fusion of the desired number of the electric fusion joints 2 has been completed (step S20), and when the fusion of the desired number of the electric fusion joints 2 has been completed. If the control unit 34 ends the process and does not end the fusion of the desired number of the electric fusion joints 2, the process proceeds to step S <b> 11. For example, whether or not the fusion of the desired number of the electrical fusion joints 2 has been completed is determined by whether or not the start button 27c of the operation display unit 27 has been pressed a number of times corresponding to the number of uses input in step S3. This is done by judging.

  In the flowchart shown in FIG. 4, steps S1 to S6, S9, and S10 are performed before the cables 13a and 13b are connected to the electric fusion joint 2 in order to check the remaining battery level of the battery power source 21. Steps S11 to S20 are performed after the electric fusion joint 2 is connected to the cables 13a and 13b in order to perform electric fusion of the electric fusion joint 2. Steps S7 and S8 are steps for charging or replacing the battery power source 21. Therefore, it is performed regardless of whether or not the electric fusion joint 2 is connected to the cables 13a and 13b.

  According to the present embodiment, whether or not a desired number of electrofusion joints 2 can be fused is determined based on the remaining battery capacity of the battery power supply 21 and the electrofusion record. When the remaining battery capacity of the battery power supply 21 is a remaining battery capacity that does not allow the desired number of the electric fusion joints 2 to be fused, the battery power supply 21 can be charged or replaced. It is possible to avoid turning off the power supply 21. In addition, since the remaining battery capacity of the battery power source 21 is converted into the number of electrofusion joints 2 that can be electrofused, the number of electrofusion joints 2 that can be electrofused can be easily grasped. Can do. Further, the battery capacity consumed by the electric fusion of the desired number of the electric fusion joints 2 is more accurately based on the relationship between the diameter of the electric fusion joint 2 in the electric fusion record, the temperature, and the consumed battery capacity. Can be determined.

  FIG. 5 is a circuit diagram showing a second embodiment of the electric fuser according to the present invention. In the present embodiment, the main body 112 of the electric fuser 101 further includes a secondary battery 41, a charger 42, and a relay 43.

  The secondary battery 41 is charged from the battery power source 21 of the battery pack 11 via the relay 43 and the charger 42. The secondary battery 41 supplies power for driving the control unit or standby current (fine current) to the control unit 34. The secondary battery 41 is an example of a second battery. The charger 42 is configured by a DC / DC converter, is connected in parallel to the secondary battery 41, and charges the secondary battery 41. The charger 42 is an example of a first charger. The relay 43 is turned on or off by the control unit 34.

  In the present embodiment, the control unit 34 is driven by the power supplied from the secondary battery 41 and performs various controls described in the above embodiment. In addition, the control unit 34 monitors the voltage of the secondary battery 41 and turns on the relay 43 when the voltage of the secondary battery 41 reaches a predetermined value (lower limit value). When the relay 43 is turned on, the charger 42 DC / DC converts the power of the battery power source 21 and charges the secondary battery 41 with the DC / DC converted power.

  According to the present embodiment, even when the remaining battery level of the battery power source 21 is equal to or lower than the lower limit value, power is supplied to the control unit 34 even when the battery pack 11 is detached from the electrofuser 101 (main body 112). Is done. Therefore, the fusion record stored in the EEPROM 33 can be output (called) to a device or a memory connected to the terminal 30. For example, the fusion record stored in the EEPROM 33 can be output to a device or a memory connected to the terminal 30 while the battery pack 11 is being removed from the electric fuser 101 (main body 112) and being charged. .

  In addition, the barcode reader connected to the terminal 31 can be driven in a state where the battery pack 11 is detached from the electric fuser 101 (main body 112). For example, a barcode code (attached to the electrofusion joint 2) by a barcode reader connected to the terminal 31 while the battery pack 11 is removed from the electrofusion fuser 101 (main body 112) and charged. Information can be read out.

  FIG. 6 is a circuit diagram showing a third embodiment of the electric fuser according to the present invention. In the present embodiment, the main body 212 of the electrofusion fuser 201 is turned on in conjunction with the main switch 23 being turned on, and turned off after a predetermined time, the switch 51, the FET 52, the transistors 53 and 54, the energizing lamp 55, the resistor 56, And a self-holding circuit composed of 57, 58, and 59, and a control unit power supply 60. In FIG. 6, the microcomputer 22, the FET 25, the shunt resistor 29, the terminals 30 and 31, the interface 32, and the EEPROM 33 are omitted for the sake of clarity.

  The self-holding circuit is an example of a blocking unit. The control unit power supply 60 is constituted by a DC / DC converter and is connected to the control unit 34 to supply power for driving the control unit or a standby current (fine current) to the control unit 34.

  If the main switch 23 is on, no current flows through the resistor 2a while the relay 24 is off, but a standby current always flows through the control unit 34. For this reason, after the fusion of the desired number of the electric fusion joints 2 is completed, the main switch 23 is turned off, and the standby current flowing through the control unit 34 is also cut off.

  When the main switch 23 is not turned off after the fusion of the desired number of the electric fusion joints 2 is completed, the standby current continues to flow to the control unit 34. When a commercial power source is used, the battery remaining amount does not decrease due to the standby current continuously flowing to the control unit 34. However, when power is supplied from the battery power source 21, there is a disadvantage that the remaining battery level of the battery power source 21 is reduced. For example, when the remaining battery level is 5 AH and the standby current is 0.01 A, the remaining battery level becomes zero in (5 / 0.01 =) 500 hours (about 20 days).

  In the present embodiment, when the control unit 34 does not operate for a predetermined period or longer when the main switch 23 is on (standby current flows to the control unit 34) (the operation display unit 27 is not operated for a predetermined period). When), cut off the standby current.

  FIG. 7 is a flowchart of automatic shut-off of the electric fuser of FIG. First, the operation of the self-holding circuit that performs automatic shut-off, which is the premise of the flowchart of FIG. 7, will be described. When the switch 51 is turned on in conjunction with the on operation of the main switch 23, the FET 52 and the energizing lamp 55 are turned on. The energizing lamp 55 indicates that the main switch 23 is turned on. The FET 52 connects the control unit power source 60 to the battery power source 21. The control unit power supply 60 DC / DC converts the power of the battery power supply 21 and supplies the DC / DC converted power to the control unit 34. The switch 51 is turned off after a predetermined time has elapsed since it was turned on. Even if the switch 51 is turned off, the transistor 53 is turned on (since it is turned on by the current supplied from the control unit 34, the transistor 54 is turned on. Therefore, the FET 52 remains on and the power to the control unit power supply 60 is supplied. Maintain power supply.

  In order to automatically shut off the electric fuser 201, first, the control unit 34 determines whether or not there is an operation on the operation display unit 27 (step S101). When there is no operation on the operation display unit, the control unit 34 determines whether or not the relay 24 is off (step S102). If the relay 24 is not off, the timer 34a is measured (step S103). In this case, when the measurement of the timer 34a is not started, the measurement of the timer 34a is started, and when the measurement of the timer 34a is already started, the measurement of the timer 34a is continued.

  Thereafter, the control unit 34 determines whether or not a predetermined time (for example, 5 minutes) has elapsed since the start of measurement of the relay timer (step S104). If the predetermined time has not elapsed, the process proceeds to step S101. On the other hand, when the predetermined time has elapsed, the control unit 34 turns off the transistor 53 (step S105), and the control unit 34 ends the process. When the control unit 34 turns off the transistor 53, the transistor 54 is turned off. As a result, the FET 52 is also turned off, and the power supply from the battery power source 21 to the main body 212 is cut off.

  If it is determined in step S101 that the control display unit 27 is operated or the relay 24 is determined to be on, the control unit 34 resets the timer (step S106), and the process proceeds to step S101.

  According to the present embodiment, since the main switch 23 is not turned off after the fusion of the desired number of the electric fusion joints 2 is finished, the remaining battery power is reduced due to the standby current continuously flowing to the control unit 34. Therefore, useless consumption of the battery power source 21 can be prevented.

  Further, in this embodiment, the case where the self-holding circuit is configured using transistors is described; however, the self-holding circuit may be configured using a relay.

  FIG. 8 is a circuit diagram showing a fourth embodiment of the electric fuser according to the present invention, and FIG. 9 is an outline of an extension cable and an external charger connected to the terminals of the electric fuser of FIG. FIG. In the present embodiment, the main body 312 of the electric fuser 301 further includes a switch 61 and a terminal 62. The switch 61 is manually switched. Terminal 62 connects to an external charger to charge battery power supply 21. The terminal 62 is an example of a charging terminal.

  In FIG. 9, the external charger 302 has a plug 303 for connecting to a commercial power source at one end, and an outlet for receiving the connector 305 at one end of the extension cord 304 at the other end. The connector 306 at the other end of the extension cord 304 is inserted into the terminal 62.

  In this embodiment, the plug 303 is connected to a commercial power source, and the connector 306 of the extension cord 304 connected to the external charger 302 is inserted into the terminal 62. By switching the switch 61 and having the terminal 62 in parallel with the battery power source 21, the battery power source 21 can be charged without removing the battery pack from the electric fuser 301 (main body 312).

  FIG. 10 is a circuit diagram showing a fifth embodiment of the electric fuser according to the present invention. In the present embodiment, the main body 412 of the electric fuser 401 further includes a terminal 63, a terminal 64, and a voltage converter 65. The terminals 63 and 64 are examples of power output terminals. The voltage converter 65 is constituted by a DC / DC converter, converts the voltage of the battery power supply 21, and outputs it through the terminal 64.

  In the present embodiment, lighting (not shown) can be connected to the terminal 63, and the terminal 64 may be a USB terminal, and a mobile phone (not shown) can be connected. For example, when the voltage of the battery power source 21 is 12V or 24V and the terminal 63 is a USB terminal, the voltage converter 65 converts the voltage of 12V or 24V into a voltage of 5V.

  At the site where the electric fusion joint 2 is fused, the construction of the temporary commercial power supply may not be completed. When a commercial power source cannot be used, power cannot be supplied to lighting or the like. According to the present embodiment, since the power from the battery power source 21 can be supplied to the outside, it can also be used for illumination. If a USB terminal is provided, it can be used for charging mobile phones, smartphones, and the like. Can be used.

  FIG. 11 is a circuit diagram showing a sixth embodiment of the electric fuser according to the present invention. In the present embodiment, the main body 512 of the electric fuser 501 further includes a terminal 71 and a charger 72. The charger 72 is an example of a second charger, and charges the battery power source 21 with power supplied from an external power source via the terminal 71.

  In the present embodiment, the charger 72 is connected to a cigarette lighter socket mounted on the vehicle via a terminal 71 and a charging cord 81. That is, the terminal 71 is connected to the connector 82 at one end of the charging cord 81, and the connector 83 at the other end of the charging cord 81 is connected to a cigarette lighter socket (not shown). The charger 72 is constituted by a DC / DC converter and converts, for example, a voltage of 12V to a voltage of 24V. When the charger 72 is connected to the battery power source 21 by switching the switch 61, the charger 72 charges the battery power source 21 with the power supplied from the vehicle battery via the cigarette lighter socket. A vehicle battery is an example of an external power source.

  According to the present embodiment, the battery power source 21 can be charged from the battery mounted on the vehicle even when the battery power source 21 is not sufficiently charged during movement in the vehicle. It is possible to avoid the battery power source 21 from being cut off.

  The present invention is not limited to the above-described embodiment, and many changes and modifications can be made. For example, in the above-described embodiment, the case where the battery power source 21 (battery pack 11) is detachable has been described. However, the battery power source 21 may be built in the electric fuser. For example, when the battery power source 21 is built in the electric fuser 301 shown in FIG. 8 (the battery pack 11 and the main body 312 are integrated), the terminal 62 can be provided with a simple configuration.

  In the above embodiment, a case has been described in which information such as the manufacturer name, caliber, serial number, material, energization time, and the like is acquired by reading out the code information of the barcode attached to the electrofusion joint 2. Information such as the company name, caliber, serial number, material, and energization time may be acquired by performing wireless communication or the like according to a predetermined wireless communication method such as Bluetooth (registered trademark).

1, 101, 201, 301, 401, 501 Electrofuser 2 Electrofused joint 2a Resistor 11 Battery pack 12, 112, 212, 312, 412, 512 Main body 13a, 13b Cable 21 Battery power supply 22 Microcomputer 23 Main switch 24,43 Relay 25,52 FET
26 Temperature sensor 27 Operation display unit 27a Display unit 27b Battery check button 27c Start button 27d Emergency stop button 28 Communication unit 29 Shunt resistance 30, 31, 62, 63, 64, 71 Terminal 32 Interface (I / F)
33 EEPROM
34 Control unit (CPU)
34a timer 41 secondary battery 42, 72 charger 51, 61 switch 53, 54 transistor 55 energizing lamp 56, 57, 58, 59 resistance 60 power supply for control unit 65 voltage converter 81 charge cord 82, 83, 305, 306 connector 302 External charger 303 Plug 304 Extension cord

Claims (9)

A first battery;
A storage unit for storing an electric fusion record of the electric fusion joint;
A control unit for controlling power supplied from the first battery;
A display for displaying information;
The controller determines whether or not a desired number of electrofusion joints can be electrofused based on the remaining battery level of the first battery and the electrofusion record, An electrofuser for displaying the result on the display unit.   2. The electric fusion according to claim 1, wherein the control unit converts the remaining battery level of the first battery into a number of electric fusion joints that can be electrically fused, based on the electric fusion record. vessel. A second battery for supplying power to the control unit;
A first charger connected to the first battery for charging the second battery;
The electric fuser according to claim 1, further comprising: Standby current is supplied from the first battery to the control unit,
The electric fuser according to claim 1, further comprising a blocking unit configured to block the standby current when the control unit does not operate for a predetermined period.   The electric fuser according to any one of claims 1 to 4, further comprising a charging terminal connected to an external charger for charging the first battery.   The electric fuser according to any one of claims 1 to 5, further comprising a power output terminal for outputting electric power from the first battery to the outside.   The electric fuser according to any one of claims 1 to 6, further comprising a second charger connected to an external power source for charging the first battery.   The electric fuser according to any one of claims 1 to 7, wherein the first battery is detachable from the electric fuser or is built in the electric fuser.   The control unit calculates the electric fusing energy consumed by the electric fusing device per day based on the past record recorded in the electric fusing record, and calculates the calculated electric fusing energy and the first fusing energy. The information about the advice of whether to charge or replace the first battery is displayed on the display unit according to a result of comparison with a remaining battery level of the battery. Electric fuser.

Images