JP2014148951A - Blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach and detach a rechargeable battery while keeping good controllability of a blower, with respect to the handheld blower mainly used in blowing off powder dust and the like while holding the same by a hand.SOLUTION: A direction to slide and attach rechargeable batteries 80a, 80b to first and second battery attaching portions 60a, 60b, is determined in a direction orthogonally crossing extending directions of grip shapes of a vertical handle portion 35 and a horizontal handle portion 36. As two battery attaching portions, that is, the first and second battery attaching portions 60a, 60b are disposed, two rechargeable batteries 80a, 80b can be attached. Thus high power voltage can be set or high power supply capacity can be set to respond to requirements in being utilized as a blower 10.

Description

  The present invention relates to a hand-held blower that performs a dust blowing operation while being held mainly by hand.

  Conventionally, a hand-held blower that is advantageous for handling is known (see, for example, Patent Document 1). This type of hand-held blower is equipped with a rechargeable battery as a power source. The hand-held blower is equipped with an electric motor as a drive source. An electric motor to which electric power is supplied from the mounted rechargeable battery rotates the motor shaft. A fan is attached to the rotating motor shaft. The fan rotates in response to the rotational drive of the motor shaft and generates wind. The generated wind is blown out through the nozzle through the air flow path structure formed by the housing structure. This type of blower uses a rechargeable battery instead of an AC power source as a power source in order to improve work handling.

JP 2001-50196 A

By the way, in the rechargeable battery mounted as described above, when the charge amount becomes empty by use, the battery is removed from the blower body and charged by a dedicated charger. Moreover, after charging is completed with this dedicated charger, it is attached to the blower body. When installing and removing the rechargeable battery from the blower body, the user attaches or removes the rechargeable battery from the blower body while grasping the handle of the blower for normal use. I want to remove it.
However, it is difficult to attach and remove the rechargeable battery from the blower body because the battery mounting portion is difficult to visually recognize.

  SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and the problem to be solved by the present invention is that a hand-held blower that blows off dust or the like while being held by hand is handled as a blower. An object of the present invention is to easily attach and detach a rechargeable battery while maintaining the goodness of the battery.

In order to solve the above problems, the blower according to the present invention takes the following means.
According to a first aspect of the present invention, there is provided a battery mounting portion in which a rechargeable battery is slid and mounted, and an electric motor that rotationally drives a motor shaft by electric power supplied from the rechargeable battery mounted in the battery mounting portion. And a fan that rotates in response to the rotational drive of the motor shaft, and a wind passage that forms a passage for the wind generated by the rotation of the fan, and the housing forming the exterior has a grip shape. A handle portion is provided, and a direction in which the rechargeable battery is slid and attached to the battery attachment portion is set to a direction intersecting with an extending direction of the grip shape of the handle portion. In addition, an arrangement configuration of the battery mounting portion is set.
According to the first aspect, the direction in which the rechargeable battery is slid and mounted on the battery mounting portion is set to intersect with the extending direction of the grip shape of the handle portion. Accordingly, the rechargeable battery can be slid and mounted on the battery mounting portion while grasping the handle portion. Therefore, it is possible to easily attach and remove the rechargeable battery while maintaining good handling as a blower.

According to a second aspect of the present invention, there is provided a battery mounting portion to which a rechargeable battery is mounted, an electric motor that rotationally drives a motor shaft with electric power supplied from the rechargeable battery mounted to the battery mounting portion, A blower having a fan that rotates in response to a rotational drive of a motor shaft, and a nozzle mounting portion that is sucked or exhausted by the fan, and is within a range of a width in the front-rear direction of the battery mounting portion. The center of gravity in the front-rear direction is located.
According to a third aspect of the present invention, there is provided a battery mounting portion to which a rechargeable battery is mounted, an electric motor that rotationally drives a motor shaft by electric power supplied from the rechargeable battery mounted to the battery mounting portion, A blower having a fan that rotates in response to the rotational drive of a motor shaft, and a nozzle mounting portion that is sucked or exhausted by the fan, and that is within a range of a width in the left-right direction of the battery mounting portion. The center of gravity in the left-right direction is located.
According to a fourth aspect of the present invention, there is provided a battery mounting portion to which a rechargeable battery is mounted, an electric motor that rotationally drives a motor shaft by electric power supplied from the rechargeable battery mounted to the battery mounting portion, A blower having a fan that rotates in response to a rotational drive of a motor shaft, and a nozzle mounting portion that is sucked or exhausted by the fan, wherein one end side of a heat radiating plate having thermal conductivity is provided in the wind passage portion. It arrange | positions and the other end side of the said heat sink is connected with the heat-emitting component which comprises the circuit for rotationally driving the said electric motor, It is characterized by the above-mentioned.

It is a perspective view showing the whole appearance of a blower in the state where a rechargeable battery is installed. It is a side view of the blower shown in FIG. It is sectional drawing which shows the (III)-(III) cross-section arrow of FIG. It is sectional drawing which shows the (IV)-(IV) cross-section arrow of FIG. It is a bottom view which shows the back side of the blower of FIG. 1 from which the rechargeable battery was removed. It is a perspective view of the rechargeable battery slidably mounted on the battery mounting portion. It is a top view which expands and shows a battery terminal connection part. FIG. 2 is a conceptual circuit diagram schematically showing a circuit structure of an electric motor. It is a perspective view which shows the state in which a dust bag is attached to the blower main body of FIG. FIG. 10 is a side view of the blower body with the dust bag of FIG. 9 attached thereto. It is a perspective view which shows the blower from which the fan cover part was removed. It is a side view of the blower shown in FIG. It is sectional drawing which shows the (XIII)-(XIII) cross-section arrow of FIG.

Next, an embodiment according to the present invention will be described. The code | symbol 10 shown in FIGS. 1-5 is the blower used as embodiment which concerns on this invention. That is, FIG. 1 is a perspective view showing the entire appearance of the blower 10 in a state where the rechargeable battery 80 is mounted. FIG. 2 is a side view of the blower 10 shown in FIG. 3 is a cross-sectional view taken along the line (III)-(III) of FIG. 4 is a cross-sectional view taken along line (IV)-(IV) in FIG. FIG. 5 is a bottom view showing the back side of the blower 10 of FIG. 1 with the rechargeable battery 80 removed. FIG. 6 is a perspective view of the rechargeable battery 80 slidably mounted on the battery mounting portion 60. FIG. 7 is an enlarged plan view showing the battery terminal connection portion 600. FIG. 8 is a conceptual circuit diagram schematically showing the circuit structure of the electric motor 15. In the following description, the blower 10 will be described using the directions described in the drawings.
This blower 10 is a hand-held blower for performing a blow-off operation such as cleaning while the user mainly holds it by hand. The voltage of power supplied to the blower 10 is set to 36V. That is, as shown in FIGS. 1 and 2, the blower 10 is configured by mounting two rechargeable batteries 80 (80 a, 80 b) as power sources on the blower body 100. In addition, the blower body 100 is equipped with a nozzle 90 that determines the blowing direction of the wind. As shown in FIGS. 3 and 4, the blower body 100 generally includes a housing 11, a battery mounting part 60, a controller 25, an electric motor 15, and a fan 45.

The housing 11 supports various interior parts while forming the exterior of the blower body 100. The housing 11 generally includes a motor housing 12, a grip housing 31, and a fan housing 41. Although described in detail later, the motor housing 12 is configured as a housing in which the electric motor 15 is housed. A battery mounting portion 60 is provided at the lower portion of the motor housing 12. A controller 25 that controls the rotational drive of the electric motor is disposed between the battery mounting unit 60 and the electric motor 15. The housing 11 including the motor housing 12, the grip housing 31, and the fan housing 41 is formed as an appropriate resin molded product from the viewpoint of weight reduction for use as a hand-held type.
The motor housing 12 will be described. The motor housing 12 is formed in a substantially bottomed cylindrical shape so that the electric motor 15 can be installed therein. A plurality of intake slits 13 are provided on the right side of the motor housing 12. The intake slit 13 is formed as a vent hole for sucking outside air into the motor housing 12 as motor cooling air. A battery mounting portion 60 is provided at the lower portion of the motor housing 12. The left side of the motor housing 12 is formed to have a shape that is appropriately opened toward a fan housing 41 described later. A grip housing 31 is provided on a cylindrical peripheral surface extending in the left-right direction of the motor housing 12. The battery mounting portion 60 and the grip housing 31 will be described later in detail. Reference numeral 14 denotes a lock lock used when replacing the carbon brush of the electric motor 15.

The electric motor 15 rotationally drives the motor shaft 16 with electric power supplied from the rechargeable battery 80 mounted on the battery mounting unit 60. The electric motor 15 is a so-called brush motor, and includes a stator 18, a rotor 19, and a commutator 20. The stator 18 is a permanent magnet supported by the motor housing 12. The rotor 19 is formed by winding a coil. A motor shaft 16 is set as the rotation shaft of the rotor 19. The right side of the motor shaft 16 is rotatably supported by a right bearing 21, and the left side is rotatably supported by a left bearing 22. A left portion of the motor shaft 16 from the portion supported by the left bearing 22 is set as a mounting protrusion 17 of the motor shaft 16. A fan 45 is attached to the mounting protrusion 17 of the motor shaft 16. The right bearing 21 is supported by the motor housing 12, and the left bearing 22 is supported by the fan housing 41. An imaginary line indicated by a reference sign X1 indicates a rotation axis of the motor shaft 16.
A grip housing 31 is provided on the outer periphery of the motor housing 12. The grip housing 31 is provided with handle portions 35 and 36 that can be gripped by the user, as well as having an operation switch 32 built therein. As shown in FIGS. 1 and 2, the grip housing 31 includes a left housing 311 and a right housing 312 which are divided into two. The left housing 311 and the right housing 312 are screwed together via a screw member 39 while the operation switch 32 is provided inside.

As shown in FIG. 2, the grip housing 31 is formed by a vertical handle portion 35 and a horizontal handle portion 36 so as to form a letter shape in a side view. That is, the lower connecting portion 33 is provided at a position shifted to 45 degrees on the rear side of the lower surface of the motor housing 12 shown in FIG. The lower connecting portion 33 protrudes from the lower portion of the motor housing 12 and then extends rearward in the horizontal direction and continues to the lower end of the vertical handle portion 35. Further, an upper connecting portion 34 is provided at a position shifted from the front surface of the motor housing 12 by 45 degrees on the front side. The upper connecting portion 34 is connected to the front end of the horizontal handle portion 36 while projecting from the upper portion of the motor housing 12 and appropriately bending toward the rear side.
The vertical handle portion 35 is formed to imitate the handle of a pistol. That is, the vertical handle portion 35 is formed to have a grip shape extending in the vertical direction. For this reason, the grip shape of the vertical handle portion 35 is set so that the operation switch 32 can be pulled and operated with the index finger and the middle finger so that it can be gripped by the ring finger and the little finger when gripped by the user. Yes. As shown in FIG. 2, the vertical handle portion 35 is inclined so that the upper side is slightly tilted but the front side falls down.
As shown in FIG. 2, the horizontal handle portion 36 is formed to extend in the horizontal direction. That is, the rear end portion of the horizontal handle portion 36 extending in the horizontal direction is set at the upper end of the vertical handle portion 35 where the operation switch 32 is provided. A front end portion of the horizontal handle portion 36 extending in the horizontal direction is set at a portion of the upper connecting portion 34 after being curved.
The vertical handle portion 35 and the horizontal handle portion 36 are formed to have an appropriate cylindrical shape, and are connected to each other while the boundary between them is bent. The vertical handle part 35 and the horizontal handle part 36 connected in this way have a shape bent between the vertical handle part 35 and the horizontal handle part 36, but are formed to extend in the front-rear direction. In other words, the vertical handle portion 35 and the horizontal handle portion 36 extend in a direction orthogonal to the rotational axis of the motor shaft 16 as indicated by an imaginary line indicated by a reference symbol X2.

  The operation switch 32 includes a switch body (not shown) and an operation button unit 322. Although the switch body is installed inside the grip housing 31, it is not visible in the figure, but is composed of widely used contact switches. The operation button part 322 is provided at the upper part of the vertical handle part 35 as shown in the drawing, in other words, near the rear part of the horizontal handle part 36. The operation button part 322 is supported by the grip housing 31 so as to be movable in the front-rear direction. For this reason, the contact of the switch body is turned on by the pushing operation along the grip direction of the vertical handle portion 35. When the contact is turned on, the switch body inputs a signal to switch on to the controller 25. When the operation button portion 322 is not pushed, the push is released by a biasing spring (not shown) and the contact is turned off. The operation switch 32 is provided with a lock button portion 323 as shown in FIGS. The lock button unit 323 can lock (hold) the pressing operation state of the operation button unit 322. The lock (holding) of the operation state of the operation button unit 322 by the lock button unit 323 is released when the operation button unit 322 is pressed again.

A fan housing 41 is provided on the left side of the motor housing 12 configured as described above. The fan housing 41 is configured by combining the fan housing main body 411 and the fan cover portion 412. Note that the fan housing body 411 and the fan cover portion 412 form an integral housing structure by appropriate screwing. The fan housing body 411 is connected so as to be integrated with the motor housing 12. A centrifugal fan 45 is housed inside the fan housing 41 thus formed.
The centrifugal fan 45 is fitted with the mounting protrusion 17 of the motor shaft 16 that serves as a rotating shaft. The mounting projection 17 is integrated with a centrifugal fan 45 via a screw member 44. That is, the mounting protrusion 17 integrated with the motor shaft 16 is attached to the centrifugal fan 45 as a rotating shaft of the centrifugal fan 45. In this manner, the centrifugal fan 45 is rotated by receiving the rotational drive of the motor shaft 16.
Since the centrifugal fan 45 is configured in the same manner as a widely used centrifugal fan, it draws outside air in the direction of the rotating shaft (motor shaft 16). For this reason, in the fan housing 41, a portion close to the rotating shaft (motor shaft 16) of the centrifugal fan 45 is provided with an opening shape capable of sucking outside air. That is, on the left side of the fan housing 41, an intake opening 42 for sucking outside air is provided in a portion close to the rotating shaft (motor shaft 16) of the centrifugal fan 45. The centrifugal fan 45 exhausts the outside air that has been sucked in the direction of the rotation diameter. In this way, the centrifugal fan 45 functions to generate wind. The centrifugal fan 45 is provided with a communication hole 46 as shown in FIGS. The communication hole 46 is a communication hole that enables intake from the right side of the centrifugal fan 45. That is, the centrifugal fan 45 causes the air inside the motor housing 12 to flow into the fan housing 41 through the communication hole 46. For this reason, the air inside the motor housing 12 is formed by the outside air being sucked into the motor housing 12 from the right end of the motor housing 12 through the intake slit 13 described above.

The wind generated by the centrifugal fan 45 described above flows from the fan housing 41 toward the exhaust opening 48 that is cylindrical and protrudes forward. The exhaust opening 48 is an opening provided through the cylindrical guide 47. The exhaust opening 48 is provided with an exhaust nozzle attaching portion 49 to which the nozzle 90 can be attached. In addition, an intake-side nozzle mounting portion 43 to which the nozzle 90 can be attached is provided even in the intake opening 42. The nozzle 90 is a long rubber-made nozzle that has been used in the past.
The centrifugal fan 45 described above corresponds to a fan that rotates upon receiving the rotational drive of the motor shaft according to the present invention. Moreover, the space (blower space) in which the wind flows inside the fan housing 41 including the above-described cylindrical guide portion 47 corresponds to the wind passage portion according to the present invention. That is, the air blowing space in which the wind flows inside the fan housing 41 forms a passage for the wind generated by the rotation of the centrifugal fan 45. That is, the cylindrical guide portion 47 constitutes a wind flow path structure for enabling the wind to be blown out by the centrifugal fan 45 built in the fan housing 41. The cylindrical guide portion 47 is formed so as to extend in the front-rear direction, like the horizontal handle portion 36. Further, the front end of the cylindrical guide portion 47 is formed as an exhaust opening 48.

A battery mounting portion 60 is provided at the lower portion of the motor housing 12 of the blower body 100 configured as described above. The battery mounting unit 60 is configured such that the rechargeable battery 80 is mounted by sliding. That is, a connection expansion portion 70 is provided at the lower portion of the motor housing 12 so that the two rechargeable batteries 80a and 80b can be connected. As shown in FIG. 5, the battery connection portion 60 a and 60 b are provided in the connection expansion portion 70. That is, rechargeable batteries 80a and 80b that are mounted by sliding are attached to the two battery mounting portions 60a and 60b, respectively. As shown in FIG. 6, the rechargeable batteries 80 a and 80 b are rechargeable batteries 80 in which a widely used power supply voltage is set to 18V. This rechargeable battery 80 is a so-called slide-type rechargeable battery that is mounted on the battery mounting portion 60 by sliding. For this reason, on the upper surface (connection terminal arrangement surface) side of the rechargeable battery 80 shown in the figure, a structure for sliding mounting and a structure for electrical connection are provided.
As shown in FIG. 6, a pair of slide guide portions 81 and 82 are provided on the upper surface side of the rechargeable battery 80 as a structure for sliding mounting. Further, a positive electrode side terminal 83, a negative electrode side terminal 84, and a signal side terminal 85 are provided on the upper surface side of the rechargeable battery 80 as a structure to be electrically connected. In addition, when the rechargeable battery 80 is slidably mounted on the upper surface side of the rechargeable battery 80 and is electrically connected, the rechargeable battery 80 is engaged with the battery mounting portion 60 in this state. A male hook 87 is provided to be in a state of being brought into the closed state. Further, a push button 88 (see FIG. 1) for operating the male hook 87 is provided on the side of the rechargeable battery 80 in the removal direction. The push button 88 is connected to the male hook 87. By pushing the push button 88, the male hook 87 is operated and stored in the rechargeable battery 80. As a result, the rechargeable battery 80 is not engaged with the battery mounting portion 60, and the rechargeable battery 80 can be removed from the battery mounting portion 60. Note that the symbol L described in FIG. 6 indicates the length of the rechargeable battery 80 in the longitudinal direction. Moreover, the symbol W described in FIG. 6 indicates the length of the rechargeable battery 80 in the width direction. Moreover, the code | symbol H described in FIG. 6 has shown the length of the height direction of this rechargeable battery 80. FIG. That is, the external dimensions of the rechargeable battery 80 are formed to have a substantially rectangular parallelepiped shape having a size relationship of length L in the longitudinal direction> length W in the width direction> length H in the height direction. .

  Next, the battery mounting portion 60 for mounting the above-described rechargeable battery 80 by sliding will be described. As shown in FIGS. 5 and 7, the battery mounting portion 60 has a structure in which the above-described rechargeable battery 80 is mounted by sliding. For this reason, it has a mounting structure corresponding to the rechargeable battery 80 described above. That is, as shown in FIGS. 5 and 7, the battery mounting portion 60 is provided with a structure for slidingly mounting the rechargeable battery 80 and a structure for electrically connecting the rechargeable battery 80 described above. Yes. As shown in FIG. 5, the battery mounting portion 60 is provided with a pair of slide guide receiving portions 61 and 62 as a structure for sliding mounting. As shown in FIG. 7, the battery mounting portion 60 is provided with a battery terminal connection portion 600 including a positive electrode side terminal 63, a negative electrode side terminal 64, and a signal side terminal 65 as a structure for electrical connection. It has been. Further, as shown in FIGS. 5 and 6, when the rechargeable battery 80 is slid and electrically connected to the battery mounting portion 60, the rechargeable battery 80 in this state is connected to the battery mounting portion 60. Locked to. That is, the battery mounting portion 60 is provided with a female portion (dent) 66 that engages with the male hook 87 of the rechargeable battery 80 in this state.

  Thus, the rechargeable batteries 80a and 80b mounted on the first and second battery mounting portions 60a and 60b are controlled by the controller 25. That is, the rotational drive of the electric motor 15 of the blower 10 is controlled by the controller 25 as shown in the conceptual circuit diagram of FIG. That is, the controller 25 receives input signals from the operation switch 32 and the shunt resistor 251 (a part of the controller 25), and sends an output signal to an FET (field-effect transistor) circuit 252 (a part of the controller 25). Thereby, the controller 25 controls the rotational drive of the electric motor 15. At this time, the rechargeable batteries 80a and 80b mounted on the first and second battery mounting portions 60a and 60b are designed to be connected in series. For this reason, the electric power supplied from the rechargeable batteries 80a and 80b is set to have a series connection structure in which the voltage is “36V” via the first and second battery mounting portions 60a and 60b. The controller 25 controls the power supply from the two rechargeable batteries 80a and 80b mounted on the two battery mounting portions 60a and 60b, in addition to the controller that controls the driving of the electric motor 15 that has been conventionally used. Both functions of the controller are built in.

  Next, the 1st battery mounting part 60a and the 2nd battery mounting part 60b provided in the connection expansion part 70 are demonstrated, referring FIG. The first battery mounting portion 60 a and the second battery mounting portion 60 b are provided in a parallel arrangement relationship that is shifted in the front-rear direction with respect to the connection expansion portion 70. For this reason, the slide mounting directions of the rechargeable batteries 80a and 80b with respect to the first and second battery mounting portions 60a and 60b are both set to be mounted by sliding from right to left. That is, the slide mounting of the rechargeable batteries 80a and 80b with respect to the first and second battery mounting portions 60a and 60b is set in the same parallel direction. The first and second battery mounting portions 60a and 60b are arranged one by one in a longitudinally symmetrical position with respect to the axis X1 centering on the extending direction of the motor shaft 16 with respect to the grip housing 31. It is provided to be. That is, the first and second battery mounting portions 60a and 60b are provided on the lower side of the electric motor 15, and the upper position between the two first and second battery mounting portions 60a and 60b. In addition, the center of gravity X5 of the electric motor 15 is positioned. In other words, the combined center of gravity X6 for the two rechargeable batteries 80a and 80b mounted on the two battery mounting portions 60a and 60b is set to be positioned below the motor shaft 16 of the electric motor 15. ing. That is, as shown in FIG. 2, the center of gravity X5 in the front-rear direction of the electric motor 15 is located within the range of the width in the front-rear direction of the two first and second battery mounting portions 60a, 60b. In addition, as shown in FIG. 3, the center of gravity X5 ′ in the left-right direction of the electric motor 15 is located within the range of the width in the left-right direction of these two first and second battery mounting portions 60a, 60b. . The combined center of gravity X6 for the two rechargeable batteries 80a and 80b is a center of gravity obtained by combining the center of gravity X61 of the rechargeable battery 80a and the center of gravity X62 of the rechargeable battery 80b shown in FIG.

In addition, the direction in which the rechargeable batteries 80a and 80b are slid and mounted on the first and second battery mounting portions 60a and 60b is the extension of the grip shape of the vertical handle portion 35 and the horizontal handle portion 36 described above. It is set in an orthogonal direction that intersects the current direction (indicated by reference numeral X2). The direction in which the rechargeable batteries 80a and 80b are slid and mounted on the first and second battery mounting portions 60a and 60b is the same as the axis X1 centering on the extending direction of the motor shaft 16. I'm doing it.
Moreover, the imaginary line shown with the code | symbol X3 has shown the axis line with which the rechargeable battery 80a is slid with respect to the 1st battery mounting part 60a. Moreover, the imaginary line shown with the code | symbol X4 has shown the axis line by which the rechargeable battery 80b is slid with respect to the 2nd battery mounting part 60b. The first and second battery mounting portions 60 a and 60 b are configured by the structure of the battery mounting portion 60 described above. The axis line X3 and the axis line X4 are set to be parallel to each other. In other words, the battery mounting portions 60a and 60b of the first embodiment are provided with respect to the connection expansion portion 70 of the motor housing 12 so that the two rechargeable batteries 80a and 80b can be mounted by sliding in parallel. Yes.

According to the blower 10 of this embodiment, the following effects can be obtained.
That is, according to the blower 10 of the above-described embodiment, the direction in which the rechargeable batteries 80a and 80b are slid and mounted on the first and second battery mounting portions 60a and 60b is the vertical handle portion 35 and The horizontal handle 36 is set in an orthogonal direction that intersects with the extending direction of the grip shape (indicated by X2 in the drawing). Accordingly, the rechargeable batteries 80a and 80b can be slid and mounted on the first and second battery mounting portions 60a and 60b while grasping the vertical handle portion 35 and the horizontal handle portion 36. Therefore, it is possible to easily attach and remove the rechargeable batteries 80a and 80b while maintaining good handling as the blower 10.
Further, according to the blower 10 of the above-described embodiment, since the first and second battery mounting portions 60a and 60b are provided, two rechargeable batteries 80a and 80b can be mounted. Thereby, when using as the blower 10, it is possible to respond to a request to set a high power voltage or to set a large power supply capacity.

Further, according to the blower 10 of the above-described embodiment, the center of gravity X5 of the electric motor 15 is located at the upper position between the two first and second battery mounting portions 60a and 60b. For this reason, the composite center of gravity X6 of the two rechargeable batteries 80a and 80b mounted on the first and second battery mounting portions 60a and 60b can be brought close to the center of gravity X5 of the electric motor 15. Thus, the center of gravity of the blower 10 to which the rechargeable batteries 80a and 80b are attached can be kept unchanged from the position of the center of gravity of the blower main body 100 from which the rechargeable batteries 80a and 80b are removed. Therefore, even if the rechargeable batteries 80a, 80b are attached or the rechargeable batteries 80a, 80b are removed, the position of the center of gravity of the blower body 100 can be made difficult to change, and the rechargeable batteries 80a, 80b, The blower 10 can be configured such that there is no difference in handling performance in either the 80b attached state or the rechargeable batteries 80a, 80b removed state.
Further, according to the blower 10 of the above-described embodiment, the lower surfaces 800a and 800b of the two rechargeable batteries 80a and 80b slide-mounted on the two battery mounting portions 60a and 60b are flush with each other. As shown, the positions of the two battery mounting portions 60a and 60b are set. For this reason, each of the lower surfaces 800a and 800b of the two rechargeable batteries 80a and 80b slide-mounted on the two battery mounting portions 60a and 60b forms a common lower surface 800c that is flush with each other. Accordingly, the lower surfaces 800a and 800b of the two rechargeable batteries 80a and 80b are flush with each other so as to form a common lower surface 800c, and the common lower surface 800c faces the placement surface, so that the blower 10 is stably provided. Can be put on.

In addition, in the case of the following configuration, the above-described two rechargeable batteries 80a and 80b have the same lower surface 800a and 800b to form the same common lower surface 800c. That is, FIG. 9 is a perspective view showing a state in which the dust bag 95 is attached to the blower body 100 of FIG. FIG. 10 is a side view of the blower body 100 with the dust bag 95 of FIG. 9 attached thereto. A dust bag 95 is attached to the blower body 100 shown in FIGS. 9 and 10 in place of the nozzle 90 with respect to the exhaust opening 48. The dust bag 95 is a bag-shaped member that has been used for a long time and has air permeability.
Even in this blower 10A, the lower surfaces 800a and 800b of the two rechargeable batteries 80a and 80b slide-mounted on the two battery mounting portions 60a and 60b are flush with each other. Therefore, the lower surfaces 800a and 800b of the two rechargeable batteries 80a and 80b form a common lower surface 800c that is flush with each other. Thus, even when the dust bag 95 is attached to the exhaust opening 48 instead of the nozzle 90, the blower to which the dust bag 95 is attached is provided by the common lower surface 800c (800a, 800b) of the two rechargeable batteries 80a, 80b. 10A can be stably placed on the ground or the like.
In addition, in the exhaust opening 48 shown in FIG. 9 and FIG. 10, it is set so as to be an upper arrangement position than the previous arrangement position. That is, the cylindrical guide portion 47A is inclined upward as it goes toward the exhaust opening 48. Thus, the exhaust opening 48 to which the dust bag 95 is attached is disposed at a position facing obliquely upward according to the cylindrical guide portion 47A. When the dust bag 95 is attached to the exhaust opening 48 formed in this way, the dust bag 95 is disposed at an aerial position floating above the ground (indicated by reference numeral GL) as shown in the figure. Can do. Thus, the dust bag 95 attached to the exhaust opening 48 is supported in a state of being floated above the ground (indicated by reference numeral GL) by the cylindrical guide portion 47A. As described above, when the dust bag 95 is floated above the ground (indicated by reference numeral GL), it is possible to prevent the dust bag 95 from becoming dirty and to set the capacity of the dust bag 95 large. It becomes possible. Thus, when the capacity | capacitance as the dust bag 95 becomes large, dust storage capacity can also be enlarged and the convenience will be improved.

  Moreover, in the above-described embodiment, it may be configured as follows. That is, FIG. 11 is a perspective view showing the blower 10B with the fan cover portion 412 shown in FIG. 12 is a side view of the blower 10B shown in FIG. FIG. 13 is a cross-sectional view taken along the (XIII)-(XIII) cross-section of FIG. The blower 10 </ b> B shown in FIGS. 11 to 13 is an example in which a heat dissipation mechanism 71 is provided for the blower 10 described above. In the heat dissipation mechanism 71, a through-hole 72 is provided in the fan housing body 411. The through hole 72 is a hole through which the inside of the motor housing 12 and the inside of the fan housing 41 are passed. A metal heat radiating plate 73 having excellent thermal conductivity is inserted into the through hole 72. That is, one end side of the heat radiating plate 73 protrudes into a space (air blowing space) through which air flows in the fan housing 41, and the other end side is connected to the controller 25 installed inside the motor housing 12. The controller 25 includes an FET circuit (including various elements such as an FET element and a switching element), and includes a circuit composed of a MOSFET and an IGBT. Here, the one end side portion (illustrated reference numeral 731) of the heat radiating plate 73 is subjected to wind flowing inside the fan housing 41. For this reason, the one end side part (illustration code | symbol 731) of this heat sink 73 is cooled with this contact | winning wind. On the other hand, the other end portion (indicated by reference numeral 732) of the heat radiating plate 73 is connected to a controller 25B constituting a circuit for driving the electric motor 15 to rotate. The controller 25B corresponds to a heat generating component according to the present invention that constitutes a circuit for rotationally driving the electric motor 15. Thus, the heat sink 73 in which the one end side portion 731 is cooled cools the controller 25 connected to the other end side portion by its own thermal conductivity. Therefore, the cooled controller 25 can stably control the rotation drive of the electric motor 15. In addition, the FET circuit included in the controller 25 described above can be stably operated. Since the controller 25 controls the electric power supplied to the two rechargeable batteries 80a and 80b in addition to controlling the rotational drive of the electric motor 15, it generates heat more easily than a normal controller.

The blower according to the present invention is not limited to the above-described example of the blower, and any blower may be used as long as it is configured by a hand-held blower that is used by hand.
Moreover, the rechargeable batteries 80a and 80b in the above-described embodiment are set to a voltage of 18V. However, the voltage of the rechargeable battery according to the present invention is not limited to this, and a rechargeable battery (secondary battery) designed with an appropriate voltage such as 10 V or 14 V can be used. Moreover, the electric power supplied from these two rechargeable batteries 80a and 80b may not only increase the supply capacity (all charge amounts) but also increase the voltage. That is, the present invention is not limited to the configuration for increasing the supply capacity of the power supplied from the rechargeable battery 80, and may be an appropriate configuration for increasing the voltage of the power supplied from the rechargeable battery 80. Further, the voltage of the rechargeable battery is not limited to this example, and may be set at an appropriate voltage such as 10V or 14V.

10, 10A, 10B Blower 100 Blower body 11 Housing 12 Motor housing 13 Intake slit 15 Electric motor 16 Motor shaft 17 Mounting protrusion 18 Stator 19 Rotor 20 Commutator 21 Right side bearing 22 Left side bearing 25 Controller 251 Shunt resistor 252 FET circuit 31 Grip Housing 311 Left housing 312 Right housing 32 Operation switch 322 Operation button portion 323 Lock button portion 33 Lower connection portion 34 Upper connection portion 35 Vertical handle portion 36 Horizontal handle portion 39 Screw member 41 Fan housing 411 Fan housing body 412 Fan cover portion 42 Intake opening 43 Intake side nozzle mounting portion 44 Screw member 45 Fan 46 Communication holes 47, 47A Cylindrical guide portion 48 Exhaust opening 49 Exhaust side nose Mounting part 60 (60a, 60b) Battery mounting part 600 Battery terminal connection part 61, 62 Slide guide receiving part 63 Positive side terminal 64 Negative side terminal 65 Signal side terminal 70 Connection expansion part 71 Heat radiation mechanism 72 Through hole 73 Heat radiation plate 80 Charging Rechargeable battery 80 (80a, 80b) Rechargeable battery 800a, 800b Lower surface 800c Common lower surface 81, 82 Slide guide part 83 Positive side terminal 84 Negative side terminal 85 Signal side terminal 87 Male hook 88 Push button 90 Nozzle 95 Dust bag L Longitudinal direction Length W width direction length H height direction length X1 motor shaft rotation axis X2 vertical handle portion and horizontal handle portion extension direction X3 axis on which the rechargeable battery is slidably mounted on the first battery mounting portion X4 Axis X5 on which the rechargeable battery is slid and mounted on the second battery mounting portion. Center of gravity position X6 Composite center of gravity of two rechargeable batteries

Claims (4)

A battery mounting portion on which the rechargeable battery is slid and mounted; an electric motor that rotates the motor shaft with electric power supplied from the rechargeable battery mounted on the battery mounting portion; and a rotational drive of the motor shaft. A blower having a fan that receives and rotates, and a wind passage portion that forms a path of wind generated by the rotation of the fan,
The outer housing is provided with a grip handle.
The battery mounting portion is arranged so that the direction in which the rechargeable battery is slid with respect to the battery mounting portion is set to intersect with the extending direction of the grip shape of the handle portion. A blower characterized in that the configuration is set. A battery mounting portion on which the rechargeable battery is mounted; an electric motor that rotates the motor shaft by the electric power supplied from the rechargeable battery mounted on the battery mounting portion; A blower having a fan and a nozzle mounting portion sucked or exhausted by the fan,
The blower characterized in that a center of gravity of the electric motor in the front-rear direction is located within a range of a width in the front-rear direction of the battery mounting portion. A battery mounting portion on which the rechargeable battery is mounted; an electric motor that rotates the motor shaft by the electric power supplied from the rechargeable battery mounted on the battery mounting portion; A blower having a fan and a nozzle mounting portion sucked or exhausted by the fan,
The blower characterized in that a lateral center of gravity of the electric motor is located within a range of a lateral width of the battery mounting portion. A battery mounting portion on which the rechargeable battery is mounted; an electric motor that rotates the motor shaft by the electric power supplied from the rechargeable battery mounted on the battery mounting portion; A blower having a fan and a nozzle mounting portion sucked or exhausted by the fan,
One end side of a heat radiating plate having thermal conductivity is disposed in the wind channel portion,
The blower characterized in that the other end side of the heat radiating plate is connected to a heat generating component constituting a circuit for rotationally driving the electric motor.

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