JP2016204916A - Shouldering-type fluid device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor-driven shouldering-type fluid device that prevents interference by a cable connecting operation parts with a device body, the operation parts being formed on an air supply and discharge pipe.SOLUTION: A shouldering-type blower 2 has a blower body 6 mounted on a back carrier 4, the blower body housing a motor and a motor-driven fan. A pipe 8 is fitted detachably on the blower body, the pipe being for discharging air as the fan rotates. A handle part 20 to be gripped by a user is provided on the pipe, and operation parts 22, 24, 26 are provided on the handle part that may be operated while the user grips the handle part. The operation parts and the blower body are connected by a cable for transmitting a signal, and a connector 34 is provided on the cable that separably connects the operation parts with the blower body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a backpack-type fluid device including a motor as a power source for a fan.

  2. Description of the Related Art Conventionally, there is known a backpack type blower in which a fan that is rotationally driven by a motor and a battery that supplies power to the fan are mounted on the backpack and configured to be used by the user on the backpack. (For example, refer to Patent Document 1).

  In addition, the back blower equipped with an engine as a power source for the fan is equipped with a pipe for discharging air to the blower body mounted on the back carrier, and the engine speed is adjusted at the grip of the pipe. There is known one provided with a trigger for performing the above (for example, see Patent Document 2).

US6006400 JP 2014-234610 A

  In the device described in Patent Document 2, the user can hold the gripping portion and direct the tip of the pipe (air discharge port) in a desired discharge direction. Since the discharge amount of air can be adjusted by operating the trigger, it is easy to use.

For this reason, it is conceivable to apply the technique described in Patent Document 2 to the motor drive system described in Patent Document 1.
By the way, in the shoulder-type blower described in Patent Document 2, the trigger and the blower body are structurally provided with a discharge amount adjusting mechanism for adjusting the discharge amount of air. The cable is fixed directly.

  For this reason, if the technique described in Patent Document 2 is applied to the motor drive system described in Patent Document 1 as it is, for example, the pipe cannot be disconnected when the pipe is detached from the blower body and transported. The problem of getting in the way and worsening transportability arises.

  The present invention has been made in view of such problems, and in a motor-driven backpack fluid device, when an air supply / discharge pipe is mounted on the device main body and an operation unit is provided on the pipe, The object is to prevent the cable connecting the operation unit from being in the way.

  In the backpack type fluid device of the present invention, a device body including a motor and a fan driven by the motor is mounted on the backpack, and a pipe for discharging or sucking gas by rotation of the fan is detachable from the device body. It is attached to.

  The pipe is provided with an operation section for inputting an operation command to the apparatus main body by an external operation, and the operation section and the apparatus main body are connected by a cable for transmitting a signal.

And the connection part which connects an operation part and an apparatus main body so that isolation | separation is possible is provided in a cable.
Therefore, according to the carrying type fluid device of the present invention, it is possible to disconnect the operation unit and the apparatus main body by the cable via the connection part and to separate the operation part and the apparatus main body. For this reason, for example, when the pipe is detached from the apparatus main body and divided and transported, it is possible to prevent the cable from interfering and improve transportability.

  In addition, since the operation unit and the apparatus main body can be separated in this way, the second cable different from the operation unit provided on the pipe is connected to the separated apparatus main body side cable or apparatus main body side cable connection part. It is also possible to operate the back-fitting fluid device by connecting an operation unit.

  Here, the connection part may be provided in at least one of a connection part between the cable and the operation part and a connection part between the cable and the apparatus main body, or may be provided in the middle of the cable.

  If the connection portion is provided at the connection portion between the cable and the operation portion or the connection portion between the cable and the apparatus main body, the connection portion may be provided at the end of the cable. Can be.

  Also, in this case, since the connection part on the operation unit side or the apparatus main body side connected to the cable is fixed to the operation part or the apparatus main body, it is easy to connect the cable to the operation unit or the apparatus main body with one hand Will be able to do.

  In addition, if the connection part is provided in the middle of the cable, it is necessary to use two cables. However, the length of the cable drawn from the apparatus main body and the length of the cable drawn from the operation part can be arbitrarily set. Can be set. For this reason, the length of each cable can be set to a length that does not get in the way when the pipe is removed from the apparatus main body.

On the other hand, the operation unit may include a plurality of input elements for inputting a plurality of commands.
As a plurality of input elements, for example, a dial switch for setting the maximum rotation speed of the motor, a trigger switch for inputting a motor speed command according to the operation amount, and the operation position of the trigger switch are fixed. A lock button to do.

Further, the operation unit may include a main power switch of the apparatus main body as one of the plurality of input elements.
If the main power switch is provided in the operation unit in this manner, for example, by turning off the main power switch, an input element (such as a trigger switch) for inputting a motor drive command is erroneously operated. In this case, it is possible to prevent the fan from rotating by driving the motor. That is, safety can be improved.

Next, a plurality of fans may be provided in the apparatus main body in order to enhance the air discharge / suction capability. In this case, in order to drive each fan individually, it is conceivable to provide a plurality of motors in the apparatus body.
Thus, when providing a some motor in an apparatus main body, the operation part is good to be comprised so that the command value common to each motor may be input as an operation command with respect to the some motor.

  That is, in this way, since the user does not need to input an operation command for each motor, the operation becomes easy and the usability can be improved. In addition, since it is not necessary to provide an input element for each motor, the configuration of the operation unit can be simplified.

  The operation unit may be provided with a display unit for displaying the state of the fluid device. The display unit may be configured to display, for example, at least one of operation / stop of the apparatus main body, remaining capacity of the battery that supplies power to the motor, and abnormality of the apparatus main body.

  Moreover, the operation part may be provided with respect to the pipe so that position adjustment is possible in the center axis direction of the pipe. In this way, since the operation unit can be arranged at a position that is easy for the user to operate, the usability can be further improved.

  The operation unit may be detachable from the pipe. In this way, the operation unit can be used by being removed from the pipe, and this also improves the usability.

It is explanatory drawing showing the external appearance of the shoulder type blower of embodiment. It is sectional drawing which looked at the blower main body from the same direction as FIG. It is a block diagram showing the circuit structure of a backpack type blower.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the back blower (hereinafter also simply referred to as “blower”) 2 of the present embodiment includes a blower body 6 mounted on the back carrier 4 and air discharged from the blower body 6 to a discharge port 9 at the tip. A pipe 8 for guiding and discharging from the discharge port 9.

  As shown in FIG. 2, the blower body 6 houses fans 10A and 10B that rotate around a common central axis A to introduce outside air from both ends of the central axis A and send them in the same direction. ing.

The blower body 6 is provided with a pipe mounting portion 7 for collecting the wind from each of the fans 10A and 10B and discharging it to the pipe 8.
Each of the fans 10A and 10B includes outer rotor type brushless motors (hereinafter simply referred to as motors) 12A and 12B, and is fixed to the rotors of the motors 12A and 12B.

  The blower body 6 is fixed to the backpack 4 via a vibration absorbing spring 5, and a pad 4 a and a belt 4 b for the user to put on their shoulders are attached to the backpack 4.

Further, in the blower body 6, the pipe mounting portion 7 is provided so as to be positioned on the right side of the user when the user carries the blower body 6 through the backpack 4.
Next, the pipe 8 includes pipes 8 a to 8 e that are divided into five along the central axis of the pipe 8.

  Among these, the pipe 8a can be detachably attached to the pipe attachment portion 7, and is formed in an L shape so that the air discharge direction from the blower body 6 can be changed from the lateral direction of the user to the forward direction. .

The pipe 8b connected to the pipe 8a is formed in a bellows shape so that the direction of the discharge port 9 can be arbitrarily changed.
The pipe 8c connected to the pipe 8b is a straight pipe,
A handle portion 20 is provided so that the user can hold and operate the direction of the discharge port 9. The handle portion 20 is slidable in the direction of the central axis of the pipe 8c, and can be used by being fixed at an arbitrary position.

  In addition, the pipe 8c can be connected to either a straight pipe 8d or a pipe 8e having a small diameter as a discharge port 9 at the tip, and when the pipe 8d is connected to the pipe 8c. The pipe 8e can be connected to the tip of the pipe 8d.

  Next, the handle portion 20 is provided with a trigger switch (hereinafter referred to as SW) 22, a dial SW 24, and a lock button 26 as operation portions that can be operated with a finger when the user grips the handle portion 20. Yes.

  Among these, the trigger SW22 is for adjusting the amount of air discharged from the blower 2 (specifically, the rotational speeds of the motors 12A and 12B), and the dial SW24 is the maximum discharge amount that can be adjusted by operating the trigger SW22. This is for setting (specifically, the maximum rotational speed of the motors 12A and 12B).

The lock button 26 is an operation button for functioning a lock mechanism that holds the trigger SW 22 at the maximum operation position or an arbitrary operation position.
Further, as shown in FIG. 3, the handle unit 20 is also provided with a main power supply SW 28 and a display unit 30 for displaying an operation state.

  The trigger SW 22, dial SW 24, main power supply SW 28, and display unit 30 are connected to the central management controller 40 fixed to the backpack 4 together with the blower body 6 via the cable 32 and the connector 34.

  Here, the connector 34 corresponds to the connecting portion of the present invention, and a plurality of signal lines in a cable (specifically, a multi-core cable) 32 drawn out from the blower body 6 are connected to the above-described portions in the handle portion 20. It is a multi-core connector for connecting to.

  And the connector 34 is fixed to the front-end | tip of the 1st connector 34a fixed to the handle | steering-wheel part 20 and the cable 32, and is detachable with respect to the 1st connector 34a so that it may illustrate in the enlarged view X shown in FIG. And a connectable second connector 34b.

  As shown in FIG. 3, the trigger SW 22 includes a main SW 22 a that is turned on when operated by the user, and a variable resistor 22 b whose resistance value changes according to the amount of operation by the user.

Then, the centralized management controller 40 applies the power supply voltage Vd to the variable resistor 22b, and takes in the divided voltage by the sliding contact of the variable resistor 22b as a trigger shift command.
The dial SW 24 is composed of a variable resistor whose resistance value changes in accordance with the rotational position of the dial. The central control controller 40 applies a power supply voltage Vd to the variable resistor to slide the variable resistor. The voltage divided by the contact is taken in as a dial shift command.

  Then, when the main SW 22a of the trigger SW 22 is turned on, the centralized management controller 40 sets the rotation speed corresponding to the dial shift command fetched from the dial SW 24 as the maximum rotation speed, and trigger shift shift fetched from the variable resistance portion 22b of the trigger SW 22 The rotation speed of the fans 10A and 10B (in other words, the motors 12A and 12B) is set at a ratio corresponding to the command (that is, the divided voltage).

The main power supply SW28 is a momentary type SW (normally off), and the on / off state (in other words, its own operation / stop) of the internal power supply circuit is switched by turning on the SW by a user operation. .
When the various SWs 22, 24, and 28 are not operated for a certain period of time, the centralized management controller 40 automatically turns off the internal power supply circuit.

  Next, the display unit 30 includes light emitting diodes DA1 and DB1 that are turned on by energization from the central management controller 40 when the central management controller 40 can drive the fans 10A and 10B.

  In addition, the display unit 30 receives a signal from the central management controller 40 when the remaining capacity of the DC power supplies (batteries) 50A and 50B used to drive the motors 12A and 12B of the fans 10A and 10B is reduced. Light-emitting diodes DA2 and DB2 that are turned on when energized are also provided.

  These light emitting diodes (LEDs) are composed of light emitting diodes having different emission colors, for example, the light emitting diodes DA1 and DB1 are green, and the light emitting diodes DA2 and DB2 are red.

  Next, the DC power supplies 50A and 50B used to drive the motors 12A and 12B are configured by two battery packs 50A1 and 50A2, and 50B1 and 50B2, respectively.

  These two battery packs 50A1, 50A2, and 50B1, 50B2 are connected to the controllers 60A, 60B for driving the motors 12A, 12B, respectively, and are connected in series inside these driving controllers 60A, 60B. Yes.

The battery packs 50A1, 50A2, 50B1, and 50B2 are sequentially arranged from the left side to the right side below the blower body 6 when the blower body 6 is viewed from behind the backpack 4.
As shown in FIG. 2, the drive controllers 60A and 60B are connected to the battery packs 50A1, 50A2, 50B1, and 50B1, 50B2, 50B1, 50B1, and 50B2, respectively. It is provided at a position corresponding to 50B2.

  Further, since the centralized management controller 40 needs to be connected to the various SWs 22, 24, 28 of the handle unit 20 provided in the pipe 8 and the display unit 30 via the cable 32, the blower body 6 is connected to the backpack 4. When viewed from the rear, it is provided so as to be located further to the right than the drive controllers 60A and 60B.

Next, the centralized management controller 40 is connected to the drive controllers 60A and 60B via cables 42A and 42B and connectors 44A and 44B.
Then, the centralized controller 40 sends the main SW signal fetched from the trigger SW 22 and the dial SW 24, the speed command of the motors 12A and 12B, and the F / R signal indicating the rotation direction of the motors 12A and 12B to the cables 42A and 42B. To the drive controllers 60A and 60B.

  On the other hand, the drive controllers 60A and 60B include drive circuits 62A and 62B that drive the motors 12A and 12B at a constant speed corresponding to the speed command in accordance with the signals input from the centralized controller 40, and state monitoring. Monitoring circuits 64A and 64B are provided.

  The monitoring circuits 64A and 64B are for monitoring the states (current, voltage, temperature, etc.) of the DC power supplies 50A and 50B, the motors 12A and 12B, and the drive controllers 60A and 60B themselves.

  The monitoring circuits 64A and 64B output a drive permission signal to the centralized management controller 40 via the cables 42A and 42B if the monitoring result is normal, and output a drive permission signal if the monitoring result is abnormal. To stop.

  The monitoring circuits 64A and 64B detect the remaining capacity of the battery packs 50A1 and 50A2 or 50B1 and 50B2, and the remaining capacity display sections 52A and 52B provided in the blower body 6 display the battery packs 50A1 and 50A2, The remaining capacity of 50B1 and 50B2 is displayed.

  When the remaining capacity of the battery packs 50A1, 50A2 or 50B1, 50B2 decreases and the output of the motors 12A, 12B decreases to a predetermined level, the monitoring circuits 64A, 64B perform centralized management via the cables 42A, 42B. A remaining capacity reduction signal is output to the controller 40.

  On the other hand, the centralized controller 40 outputs, as a speed command, the rotational speed set based on the shift signal from the trigger SW 22 and the dial SW 24 to the drive controllers 60A and 60B outputting the drive permission signal. Thus, the motors 12A and 12B are driven.

  Further, the central management controller 40 turns on the corresponding light emitting diodes DA1 and DB1 when the drive permission signal is input from the drive controllers 60A and 60B, so that the power of the central management controller 40 is on. In addition, it is notified that the fans 10A and 10B can be driven.

  Further, when the remaining capacity reduction signal is input from the drive controllers 60A and 60B, the centralized management controller 40 causes the corresponding light emitting diodes DA2 and DB2 to blink so that the outputs of the motors 12A and 12B reach a predetermined level. Informs that it is decreasing.

  Further, the centralized management controller 40 turns off the corresponding light emitting diodes DA1 and DB1 and DA2 and DB2 when the remaining capacity reduction signal is input from the drive controllers 60A and 60B and the drive permission signal is not input. Is turned on to notify that the battery pack 50A1, 50A2 or 50B1, 50B2 needs to be charged.

  It should be noted that the cables 42A and 42B are used for inputting the power supply voltages of the DC power supplies 50A and 50B (the voltages across the two batteries connected in series) VbatA and VbatB from the driving controllers 60A and 60B to the centralized controller 40. A power line is also included.

  This power supply line is composed of a pair of positive and negative signal lines connected to the positive and negative sides of the DC power supplies 50A and 50B. The negative signal line is connected to the ground of the centralized controller 40 and the drive controllers 60A and 60B. Connected to the line.

  This allows operation power to be supplied from the DC power supplies 50A and 50B to the centralized controller 40, and the negative sides of the DC power supplies 50A and 50B and the ground lines of the controllers 40, 60A and 60B can be set to the same potential. It is for doing so.

That is, in this way, the central management controller 40 causes the drive controller 60 to operate.
The reference potential of the control system when driving the motors 12A and 12B via A and 60B can be matched to facilitate the design work when constructing the control system.

As described above, in the blower 2 of the present embodiment, the handle portion 20 for the user to hold is provided on the pipe 8 that is detachably attached to the blower body 6.
In addition, the handle unit 20 is provided with a trigger SW 22 as an operation unit, a dial SW 24, a lock button 26, a main power source SW 28, and a display unit 30 including light emitting diodes DA 1, DB 1, DA 2, DB 2.

  The trigger SW 22, dial SW 24, main power supply SW 28, and light emitting diodes DA 1, DB 1, DA 2, DB 2 are respectively connected to the blower body 6 (specifically, concentrated) via a single cable (specifically, a multicore cable) 32. Connected to the management controller 40).

  When the cable 32 is fixed to the handle portion 20 and the blower body 6, for example, when the entire pipe 8 is removed from the blower body 6, or when the tip portion is removed from the blower body 6 from the pipe 8c, the cable 32 becomes an obstacle. .

  However, in this embodiment, the cable 32 is connected to the handle portion 20 via the connector 34, and by removing the connection at the connector 34, the handle portion 20 (and thus the pipe 8) and the blower body 6 are connected to each other. Can be separated.

  For this reason, according to the blower 2 of this embodiment, when the pipe 8 or a part thereof is detached from the blower main body 6 and further divided, the cable 32 is prevented from being obstructed and the usability can be improved.

  Further, according to the blower 2 of the present embodiment, since the first connector 34a is fixed to the tip of the cable 32, another operation different from the handle portion 20 is provided to the tip of the cable 32 via the first connector 34a. The part can also be attached.

  And if it does in this way, when a user carries the blower main body 6, the other operation part can be hung from the waist via the cable 32, and the operation part can be operated by hand when necessary. . At this time, another handle without a switch operation may be mounted at the position where the handle portion 20 was mounted.

  Further, the handle portion 20 is provided so as to be movable in the central axis direction with respect to the pipe 8c, and can be separated from the pipe 8c. Therefore, the handle portion 20 itself can be used by hanging from the waist.

In addition to the trigger SW 22 for inputting the drive commands for the motors 12 </ b> A and 12 </ b> B and the lock button 26, the handle unit 20 is provided with a main power SW 28.
For this reason, when the blower 2 is not operated, the main power SW 28 of the handle portion 20 is turned off so that the motors 12A and 12B are driven when the trigger SW 22 or the lock button 26 is operated by mistake. Can be prevented and safety can be improved.

  Further, in the blower 2 of the present embodiment, a plurality of motors 12A and 12B are provided in the blower body 6, but a trigger SW 22 and a dial for inputting drive commands and setting a rotation speed are provided. There is one SW24.

Then, the centralized management controller 40 takes in the inputs from the trigger SW 22 and the dial SW 24 as common command values for driving the motors 12A and 12B, and sets the rotation speeds of the motors 12A and 12B.

  For this reason, according to the blower 2 of this embodiment, the user does not need to input an operation command for each of the motors 12A and 12B, and can easily operate the blower 2. Further, since it is not necessary to provide the trigger SW 22 and the dial SW 24 for each of the motors 12A and 12B, the device configuration can be simplified.

  In addition to the operation unit, the handle unit 20 displays the state of the blower 2 (specifically, the operation / stop state of the centralized controller 40, abnormal driving of the motors 12A and 12B, and a decrease in the remaining battery capacity). A possible display 30 is provided.

  For this reason, the user can grasp | ascertain the state of the blower 2 by grasping the handle | steering-wheel part 20 and confirming the state of the display part 30 (light-emitting diode DA1-DB2 lighting state).

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various aspect can be taken in the range which does not deviate from the summary of this invention.
For example, in the above-described embodiment, the connector 34 as the connection unit has been described as being used to connect the cable 32 and the handle unit 20 (specifically, the operation unit or the display unit in the handle unit 20). It may be used to connect the cable 32 and the blower body 6 (specifically, the centralized management controller 40).

In this case, the connectors 34 may be provided on both ends of the cable 32 so that the cable 32 can be detached from both the handle portion 20 and the blower body 6.
In addition, as shown in the enlarged view Y of FIG. 1, the cable 32 is divided into two parts, and the first connector 34a and the second connector 34b for interconnection are provided at the cable end portion of the division point. You may make it comprise a connection part.

  In this case, if the dividing point of the cable 32 coincides with the dividing point of the pipe 8, when the pipe 8 and the cable 32 are divided at the dividing point, the tip of the cable 32 protrudes from the pipe and becomes an obstacle. Can be prevented.

  In the above embodiment, the blower that discharges air from the tip of the pipe by the rotation of the fan has been described as a backpack type fluid device. However, the present invention is a fluid device that sucks air by the rotation of the fan. Alternatively, a fluid device that sucks and discharges air by switching the rotation direction of the fan may be used.

  In the above embodiment, the switches and the display unit as the operation unit are described as being provided on the handle unit 20 fixed to the pipe 8, but these may be directly provided on the pipe 8.

  In the above embodiment, the blower body 6 has been described as accommodating two sets of motors and fans. However, the motor and fans may be one set or three or more sets. Moreover, you may be comprised so that a some fan may be driven with one motor.

2 ... Blower, 4 ... Backpack, 6 ... Blower body, 7 ... Pipe mounting part, 8, 8a to 8e ... Pipe, 9 ... Discharge port, 10A, 10B ... Fan, 12A, 12B ... Motor, 20 ... Handle part, 22 ... Trigger SW, 22a ... Main SW, 22b ... Variable resistor section, 24 ... Dial SW,
26 ... Lock button, 28 ... Main power switch, 30 ... Display, DA1, DA2, DB1, DB2 ... Light emitting diode, 32 ... Cable, 34 ... Connector, 34a ... First connector, 34b ... Second connector, 40 ... Concentration Management controller, 50A, 50B ... DC power supply, 50A1, 50A2, 50B1, 50B2 ... Battery pack, 52A, 52B ... Remaining capacity display section, 60A, 60B ... Drive controller, 62A, 62B ... Drive circuit, 64A, 64B ... Monitoring circuit.

Claims (11)

An apparatus body including a motor and a fan driven by the motor;
A backpack on which the device body is mounted;
A pipe that is detachably attached to the apparatus body, and that discharges or sucks gas by rotation of the fan;
An operation unit provided in the pipe, for inputting an operation command to the apparatus main body by an external operation;
A cable for transmitting a signal between the operation unit and the apparatus main body;
A connection portion for connecting the cable so that the operation portion and the apparatus main body are separable;
A backpack-type fluid device.   The shoulder fluid device according to claim 1, wherein the connection portion is provided in at least one of a connection portion between the cable and the operation portion, and a connection portion between the cable and the apparatus main body.   The backpack type fluid device according to claim 1 or 2 with which said connecting part is provided in the middle of said cable.   The shoulder type fluid device according to any one of claims 1 to 3, wherein the operation unit includes a plurality of input elements for inputting a plurality of commands.   The operation unit, as the plurality of input elements, a dial switch for setting a maximum rotation speed of the motor, a trigger switch for inputting a speed command of the motor according to an operation amount, and a trigger switch The backpack-type fluid device according to claim 4, further comprising a lock button for fixing the operation position.   The backpack type fluid device according to claim 4 or 5 with which said operation part is provided with the main power switch of said device main part as one of said a plurality of input elements. The apparatus body is provided with a plurality of motors,
The backrest type fluid device according to any one of claims 1 to 6, wherein the operation unit is configured to input a command value common to each motor as an operation command for the plurality of motors.   The backpack type fluid device according to any one of claims 1 to 7, wherein the operation unit includes a display unit for displaying a state of the fluid device.   The display unit is configured to display at least one of an operation / stop of the apparatus main body, a remaining capacity of a battery that supplies power to the motor, and an abnormality of the apparatus main body. The backpack type fluid device as described.   The shoulder type fluid device according to any one of claims 1 to 9, wherein the operation unit is provided so as to be positionally adjustable with respect to the pipe in a central axis direction of the pipe.   The backpack type fluid device according to any one of claims 1 to 10, wherein the operation unit is detachable from the pipe.

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