Blower

Abstract

To provide a blower improved in workability at higher output.SOLUTION: A blower 10 used with a battery mounted thereon includes a body part 2, the body part includes a jetting port part 22, an air flow generation part, and a partition wall part, the jetting port part is provided in front of the body part, and the air flow generation part is configured to generate an air flow from the rear of the body part toward the jetting port part in an internal space of the body part by being supplied with power from the battery. The partition wall portion is arranged to divide the internal space into a first space and a second space, the first space is configured to arrange the battery, and the second space is located outside the first space and is configured to allow the air flow to pass therethrough.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a blower. [Background technology]

[0002] Patent Document 1 discloses a relatively high-power electric device. This electric device is configured to be able to use a low-power battery pack as a power source, thereby improving convenience and ease of handling.

[0003] The electric device described in Patent Document 1 is an electric blower equipped with a tubular nozzle for blowing air at the front of a housing, a blower fan that rotates to send air to the nozzle, and an electric motor that drives the blower fan. This electric blower has multiple mounting parts to which separate rechargeable battery packs can be attached, and is configured so that the electric motor is driven by the power of the multiple battery packs attached to the mounting parts. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-148950 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the conventional technology disclosed in Patent Document 1 still has room for improvement.

[0006] In view of the above circumstances, the present invention provides a blower with improved workability at higher output. [Means for solving the problem]

[0007] According to one aspect of the present invention, there is provided a blower that is used with a battery attached, comprising a main body portion, the main body portion having an outlet portion, an air flow generating portion, and a partition portion, the outlet portion being located in front of the main body portion, the air flow generating portion being configured to generate an air flow in the internal space of the main body portion from the rear of the main body portion toward the outlet portion when power is supplied from the battery, the partition portion being positioned to divide the internal space into a first space and a second space, the first space being configured to accommodate the battery, and the second space being located outside the first space and configured to allow the air flow to pass through.

[0008] According to this aspect, the efficiency of cooling the battery is increased, thereby improving workability during high power output. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view of the blower as seen from above. [Figure 2] FIG. 2 is a perspective view of the blower as seen from below. [Figure 3] FIG. 2 is a left side view shown in a plane defined by front-to-back and top-to-bottom along an axis. [Figure 4] FIG. 10 is a perspective view of a blower having a filter in an intake port, as viewed from below. [Figure 5] 5 is a left side view of the blower shown in FIG. 4, shown on a plane defined by front-rear and top-bottom along the axis. FIG. [Figure 6] 10 is a left side view showing the relationship between a communication hole in the partition wall and a through-hole in the battery, which communicate with each other via a battery mounting portion. FIG. [Figure 7] 10 is a left side view showing the relationship between a communication hole in the partition wall and a through-hole in the battery, which communicate with each other via a battery mounting portion. FIG. [Figure 8] 10 is a left side view showing the relationship between the communication hole of the partition wall portion and the through hole of the battery, which are directly connected to each other. FIG. [Figure 9] 10 is a left side view showing the relationship between the front part of the first space and the rear end surface of the connecting part of the air flow generating part. FIG. [Figure 10]10 is a perspective view showing air intake holes opening into a wall portion of the main body portion and a circumferential wall portion. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. Various features shown in the following embodiment can be combined with each other.

[0011] 1. Overall structure Chapter 1 describes a blower 1 according to one embodiment. The blower 1 is an electric work device that blows air, and is used, for example, to blow away objects such as fallen leaves, trash, pebbles, and water droplets (hereinafter simply referred to as "objects"). The blower 1 is a blower 1 that is used with a battery 7 attached, and is, for example, a centrifugal blower (not shown) equipped with a centrifugal fan, or an axial blower 10 equipped with an axial fan. The following description will be given taking the axial blower 10 (blower 1) as an example.

[0012] FIG. 1 is a perspective view of the blower as seen from above. FIG. 2 is a perspective view of the blower as seen from below. FIG. 3 is a left side view taken along a plane defined by the front-rear and top-bottom axes. FIG. 4 is a perspective view of a blower having a filter at its intake port as seen from below. FIG. 5 is a left side view of the blower shown in FIG. 4 taken along a plane defined by the front-rear and top-bottom axes. FIG. 6 is a left side view showing the relationship between the communication hole in the partition wall and the through-hole in the battery, which communicate via the battery mounting section. FIG. 7 is a left side view showing the relationship between the communication hole in the partition wall and the through-hole in the battery, which communicate via the battery mounting section. FIG. 8 is a left side view showing the relationship between the communication hole in the partition wall and the through-hole in the battery, which communicate directly. FIG. 9 is a left side view showing the relationship between the front portion of the first space and the rear end surface of the connecting portion of the airflow generating unit. FIG. 10 is a perspective view showing the intake ports opening in the wall portion of the main body and the circumferential wall portion. In the following description, the directions of the axial blower 10 and the components that make up the axial blower 10 are defined based on the "up and down," "left and right," and "front and rear" shown in the drawings. More specifically, when looking at the axial blower 10 in the drawings, the side where the blower pipe 3 is attached is defined as the "front side," "forward," or "tip side," and the side of the axial blower 10 opposite the side where the blower pipe 3 is attached is defined as the "rear side," "rear," or "rear end side." Furthermore, when looking at the axial blower 10 in the drawings from above and behind, the right side is defined as the "right" or "right side," and the left side is defined as the "left" or "left side."

[0013] As shown in FIGS. 1 and 2, an axial blower 10, which is a blower 1 according to one embodiment, includes a main body 2 having an internal space IS that connects an intake port 21 to an outlet port 22, and a blower pipe 3 that is inserted into and fitted into the outlet port 22. In the axial blower 10, as shown in FIG. 3, a fan 44 connected to a motor 41 provided in an airflow generating unit 4 is driven by a driving force to rotate within the internal space IS, thereby generating a high-speed airflow AF from the intake port 21 toward an outlet port 31 of the blower pipe 3. The airflow AF is then discharged to the outside through the outlet port 31. Holding the axial blower 10, an operator can blow the airflow AF discharged from the outlet port 31 toward the ground to blow away an object. Details of these components are described below.

[0014] (Main body 2) The main body 2 is a resin cylinder or box extending in the front-rear direction with an air outlet 22 opening at its front end. An air intake 21 is formed at the rear end of the main body 2 to take in air from outside the main body 2. That is, the main body 2 has the air intake 21 and the air outlet 22. The main body 2 also houses mechanical and electrical equipment for operating the axial blower 10. The mechanical and electrical equipment includes a battery mounting portion 27, an air flow generating portion 4, a partition wall 5, a control unit 6, and a battery 7. The main body 2 also includes a handle 26 and legs 28 on its outer surface.

[0015] 3, the main body 2 has an internal space IS that communicates with the air intake 21 and the air outlet 22. The internal space IS functions as an air flow path that guides the outside air taken in through the air intake 21 to the air outlet 22. The internal space IS has a first space IS1, a second space IS2, and a third space IS3.

[0016] The first space IS1 and the second space IS2 are located in the rearward portion from the center of the main body 2. The first space IS1 and the second space IS2 are separated from each other by the partition wall 5, which separates the internal space IS formed by the rear outer cylinder portion 25a. In other words, the partition wall 5 is disposed so as to separate the internal space IS into the first space IS1 and the second space IS2.

[0017] Specifically, the partition wall 5 is a cylindrical resin member extending in the front-rear direction and located from the center to the rear of the main body 2. The partition wall 5 is tapered so that its diameter (inner diameter) increases from the front to the rear. The rear end surface of the partition wall 5 opens in a substantially circular shape, and the front end surface is closed in a cylindrical shape. With this configuration, the substantially truncated cone-shaped inner space formed by the partition wall 5 constitutes the first space IS1. A battery mounting section 27 to which the battery 7 can be detachably attached and a control unit 6 are disposed inside the partition wall 5, and the battery 7 is attached to the battery mounting section 27. In other words, the first space IS1 is configured to accommodate the battery mounting section 27, the control unit 6, and the battery 7.

[0018] Furthermore, rear outer cylinder portion 25a is a cylindrical resin member that extends straight in the front-to-rear direction and is located from the center to the rear of main body portion 2. Rear outer cylinder portion 25a is formed with a larger diameter than the cylindrical outer diameter formed by partition wall portion 5 and is located outside partition wall portion 5. With this configuration, a second space IS2 is formed between the cylindrical inner wall of rear outer cylinder portion 25a and the cylindrical outer wall of partition wall portion 5 that is located inside the cylindrical inner wall.

[0019] The rear outer cylinder portion 25a and the rear end of the partition wall 5 form an air intake hole 21 behind the main body 2 to take in external air. That is, the air intake hole 21 is configured to open in the rear wall of the main body 2 and guide external air into the second space IS2 of the main body 2. The second space IS2 is located outside the first space IS1 and configured to allow an airflow AF to pass through. According to this embodiment, an airflow AF is generated in the second space IS2, which is outside the first space IS1 in which the battery 7 is disposed. This allows the airflow AF to cool the partition wall 5, which separates the first space IS1 from the second space IS2, thereby enabling the battery 7 to be cooled via the partition wall 5. This improves the cooling efficiency of the battery 7 and improves workability during high-power operation. The second space IS2 may be a space that completely surrounds the first space IS1 or a space that partially surrounds the first space IS1. In the latter case, the second space IS2 may be located above, below, to the right, or to the left of the first space IS1, or a combination thereof. In particular, the second space IS2 may form a space that completely surrounds the first space IS1. According to this embodiment, the partition wall 5 is disposed to define the outer periphery of the first space IS1, and external air is introduced into the second space IS2, thereby enabling efficient cooling of the battery 7 and further improving operability during high power output.

[0020] The third space IS3 is located from the center to the front of the main body 2, and is formed by the front outer cylinder 25b. The front outer cylinder 25b is a cylindrical member made of resin that extends in the front-to-rear direction, and is located from the center to the front of the main body 2. The front part of the front outer cylinder 25b extends straight in the front-to-rear direction (the bore (inner diameter) is constant in the front-to-rear direction) and is formed to have a slightly smaller diameter than the rear end (base end) of the blower pipe 3. The rear part of the front outer cylinder 25b is formed to have a tapered shape such that the bore (inner diameter) widens (expands) from the front to the rear, and the rear end of the front outer cylinder 25b is formed to have a slightly larger diameter than the rear end (base end) of the blower pipe 3.

[0021] The front edge portion (opening at the front end surface) of the front outer cylinder portion 25b has an air outlet portion 22, which is configured so that the fitting portion 32 of the blower pipe 3 can be inserted and fitted into it. That is, the air outlet portion 22 is provided in front of the main body portion 2. The outer surface of the rear edge portion (opening at the rear end surface) of the front outer cylinder portion 25b is in contact with the inner surface of the rear outer cylinder portion 25a. This allows communication between the second space IS2 and the third space IS3. An airflow generating unit 4 is disposed inside the front outer cylinder portion 25b. That is, the airflow generating unit 4 is disposed in the third space IS3. The airflow generating unit 4 disposed in the third space IS3 generates an airflow AF in the internal space IS of the main body portion 2 from the rear of the main body portion 2 toward the air outlet portion 22. Details of the airflow generating unit 4 will be described later.

[0022] (Blower Pipe 3) The blower pipe 3 is a cylindrical member (straight pipe) made of resin that extends in the front-to-rear direction. The blower pipe 3 has a fitting portion 32 at its rear that is detachably attached to the main body 2. The fitting portion 32 is configured so that it can be inserted into and fitted into the outlet portion 22 of the main body 2. The front portion of the blower pipe 3 protrudes forward from the outlet portion 22 of the main body 2. The front opening (tip opening) of the blower pipe 3 forms the discharge port 31. The blower pipe 3 may or may not be flexible.

[0023] (Motor cover 24 and rectifier plate 23) The motor cover 24 is a resin container disposed within the third space IS3. The motor cover 24 is a cylindrical member with one end closed, and is disposed in the center of the third space IS3 with its longitudinal direction aligned with the axis O. The rear end surface of the motor cover 24 is circularly open, and the front end is closed in a conical shape.

[0024] The front part (conical part) of the motor cover 24 protrudes so as to enter the inside of the blower pipe 3 when the blower pipe 3 is inserted and fitted into the main body 2. As shown in FIG. 3, the motor cover 24 is supported at the center of the front outer cylinder part 25b by a plurality of rectifying plates 23.

[0025] The rectifying plate 23 is interposed between the inner surface of the front outer cylinder portion 25b and the outer surface of the motor cover 24. The rectifying plate 23 is a rectangular plate-shaped member made of resin that extends in the front-to-rear direction, with the front-to-rear direction being the longitudinal direction. The inner end of the rectifying plate 23 is connected to the outer peripheral surface of the motor cover 24. Furthermore, the outer end of the rectifying plate 23 is connected to the inner peripheral surface of the front part of the front outer cylinder portion 25b. In other words, the rectifying plate 23 is a support member that is interposed between the inner surface of the front outer cylinder portion 25b and the outer surface of the motor cover 24. In other words, the rectifying plate 23 is configured to support the motor cover 24 in the third space IS3.

[0026] The rectifying vane 23 rectifies the airflow AF (more specifically, the airflow AF sent out by the fan 44 downstream of the fan 44, which will be described later) in the third space IS3. The rectifying vane 23 is also called a stator vane. In one embodiment, a plurality of rectifying vanes 23 (five in the illustrated example) are arranged at equal intervals in the circumferential direction of the front outer cylindrical portion 25b.

[0027] In one embodiment, the motor cover 24, the rectifying plates 23, and the front outer cylinder portion 25b are a single, integrally molded component. However, the motor cover 24, the rectifying plates 23, and the front outer cylinder portion 25b may be formed by assembling multiple components that are formed separately.

[0028] (Air flow generating unit 4) As shown in FIG. 3 , the airflow generating unit 4 in the axial blower 10 is an axial fan 40. That is, the airflow generating unit 4 is configured to generate an airflow AF using the axial fan 40. The axial fan 40 includes a motor 41 and a fan 44. The airflow generating unit 4 is disposed inside the third space IS3. External air taken in through the intake holes 21 located at the rear of the main body 2 is guided to the airflow generating unit 4 via the second space IS2. That is, the airflow generating unit 4 is disposed forward of the partition wall 5 that defines the second space IS2. According to this embodiment, the blower 1 equipped with the axial fan 40 can efficiently cool the battery 7, thereby improving operability during high-power operation. Furthermore, the circumferential size of the main body 2 can be designed to be smaller, contributing to the miniaturization of the blower 1.

[0029] The motor 41 is an electric motor and is housed in the motor cover 24. That is, the motor 41 is disposed in the center of the third space IS3. The motor 41 also includes a rotating shaft 43, which is disposed along the axis O. The motor 41 is configured so that the rotating shaft 43 rotates around the axis O when a current is supplied to the coil.

[0030] The motor 41 is fixed inside the motor cover 24. With the motor 41 fixed inside the motor cover 24, the rotary shaft 43 protrudes rearward beyond the rear end surface of the motor cover 24.

[0031] The fan 44 is disposed inside the center of the third space IS3 behind the motor cover 24. The fan 44 includes a connecting portion 45 and a plurality of blade portions .

[0032] The connecting portion 45 is a short cylindrical member and is formed with approximately the same diameter as the motor cover 24. The rear end surface of the connecting portion 45 is closed with a spherical surface (in other words, dome-shaped), and the front end surface of the connecting portion 45 is open in a circular shape. A boss 47 is formed in the center of the connecting portion 45, and an insertion hole 48 is formed in the boss 47, into which the rotating shaft 43 of the motor 41 is inserted. The connecting portion 45 is fixed to the rotating shaft 43 of the motor 41 by fitting the rotating shaft 43 of the motor 41 into the insertion hole 48 of the connecting portion 45.

[0033] The connecting portion 45 rotates relative to the motor cover 24 and forms a part of the motor cover 24 as a rear case of the motor cover 24 .

[0034] In one embodiment of the axial flow blower 10, a plurality of blades 46 are arranged (protrude) on the outer peripheral surface of the connecting portion 45. In one embodiment, the plurality of blades 46 (12 in the illustrated example) are arranged at equal intervals around the connecting portion 45. When the motor 41 is driven to rotate the rotating shaft 43 and the fan 44 around the axis O, each blade 46 blows air from the rear (upstream side) to the front (downstream side) within the third space IS3. That is, in the axial flow blower 10, when the axial flow fan 40 rotates within the third space IS3 due to the driving force of the motor 41, a high-speed airflow AF is generated from the intake hole 21 on the upstream side toward the outlet 22 and discharge port 31 on the downstream side. That is, the axial flow fan 40, which is an example of the airflow generating unit 4, is configured to generate an airflow AF in the internal space IS of the main body 2 from the rear of the main body 2 toward the outlet 22 when power is supplied from the battery 7. The blades 46 of the axial flow fan 40 are also called rotor blades.

[0035] In one embodiment, the motor 41 (rotating shaft 43) and the fan 44 are arranged in the front-to-rear direction with their central rotating axes aligned along the axis O. The central axes of the motor 41 (rotating shaft 43) and the fan 44 are aligned with the central axes of the blower pipe 3, the outer cylinder 25, and the motor cover 24, and the internal space IS extends generally straight along the axis O.

[0036] (Handle 26) As shown in FIG. 1 , a handle 26 is provided on the top of the main body 2. The handle 26 is a cylindrical member extending in the front-to-rear direction and is the part that is gripped by the operator. A front end 26a and a rear end 26b of the handle 26 are connected to the front upper part and the rear upper part of the main body 2. A throttle lever 261 is provided on the front part of the handle 26 as an operating means for increasing or decreasing the amount of airflow AF when held by the operator. The throttle lever 261 is configured to press the head of a drive switch (not shown) provided inside the main body 2. The drive switch controls the airflow generating unit 4 according to the amount of depression of the head, thereby increasing or decreasing the amount of air blown by the axial blower 10.

[0037] (leg 28) As shown in Fig. 2, the legs 28 are configured to maintain the horizontal position of the axial flow blower 10 by contacting the ground or a base when the axial flow blower 10 is placed on the ground or a base. Furthermore, if the axial flow blower 10 is dropped and the legs 28 hit the ground first, damage to the axial flow blower 10 can be reduced. Specifically, the legs 28 include a front leg 281 disposed below the front side of the main body 2 and a rear leg 282 disposed below the rear side of the main body 2. The front leg 281 and the rear leg 282 are configured to maintain the horizontal position of the axial flow blower 10 by contacting the ground or a base.

[0038] (battery mounting part 27) 3, the battery mounting portion 27 is provided at the bottom inside the first space IS1 along the inner wall of the partition portion 5. The battery mounting portion 27 is provided with a metal connection terminal (not shown), which is electrically connected to the motor 41 and the control unit 6. The connection terminal of the battery mounting portion 27 is connected to the connection terminal 72 of the battery 7, so that power is supplied from the battery 7 to the motor 41 and the control unit 6.

[0039] (Control Unit 6) As shown in FIG. 3, the control unit 6 has a box shape and is fixed to the inner wall of the partition wall 5. The control unit 6 is electrically connected to the motor 41 and the battery 7 by wiring, connectors, etc., and controls the supply of electricity from the battery 7 to the motor 41. In other words, the control unit 6 is configured to electrically control the rotation of the motor 41. The control unit 6 may also have a heat sink that dissipates heat generated by the control unit 6. In this embodiment, the provision of a heat sink allows the control unit 6 to be efficiently cooled, thereby improving operability at high output.

[0040] (Battery 7) As shown in Fig. 3, the battery 7 is a known battery, and is configured by housing a secondary battery such as a lithium-ion secondary battery in a rectangular parallelepiped case extending in the front-rear direction. The battery 7 is sized to fit into the first space IS1. The battery 7 has a sufficiently high output and charging capacity suitable for work.

[0041] When attaching the battery 7 to the battery mounting portion 27, the battery 7 is fitted into the battery mounting portion 27 by sliding the battery 7 from rear to front relative to the battery mounting portion 27. Then, when the battery 7 is moved to a position where it is supported by the battery mounting portion 27, the engagement portion of the battery 7 engages with the battery mounting portion 27, and the battery 7 is fixed to the battery mounting portion 27.

[0042] The battery 7 attached to the battery attachment portion 27 is disposed at an angle so that its rear is positioned lower than its front. The battery 7 includes a connection terminal 72, and when the battery 7 is fixed to the battery attachment portion 27, the connection terminal 72 of the battery 7 is electrically connected to a connection terminal (not shown) of the battery attachment portion 27. That is, the battery 7 includes the connection terminal 72. When the connection terminal 72 of the battery 7 is connected to the connection terminal of the battery attachment portion 27, power is supplied from the battery 7 to the motor 41 of the air flow generating unit 4 and the control unit 6. That is, the battery attachment portion 27 is electrically connected to the air flow generating unit 4.

[0043] When removing the battery 7 from the battery mounting part 27, the connection lever (not shown) of the battery 7 is pulled up, which disengages the battery mounting part 27 from the engagement part, allowing the battery 7 to be slid rearward relative to the battery mounting part 27. In other words, the battery mounting part 27 is configured so that the battery 7 can be attached and detached.

[0044] 2. Configuration of the internal space IS and the components placed within the internal space IS In this section, the configuration of the internal space IS of the axial flow blower 10 according to one embodiment and the configuration of the components disposed within the internal space IS will be described in detail with reference to FIGS.

[0045] As described above, the internal space IS includes a first space IS1 and a second space IS2. As shown in FIG. 5 , the partition wall 5, which separates the first space IS1 from the second space IS2, may include a communication hole 51. The communication hole 51 is configured to communicate the first space IS1 with the second space IS2. One or more communication holes 51 may be provided at any position on the partition wall 5. Specifically, the communication hole 51 is located above the first space IS1 and has a predetermined shape. The predetermined shape may be, for example, a circle, an ellipse, or a polygon. In other words, the communication hole 51 is configured to be located above the battery 7 when the blower 1 is in use. The use state in this case refers to a state in which the handle 26 is held so that the handle 26 is positioned above the axis O, a state in which the blower 1 is used so that the blower pipe 3 faces the ground, or the like. The battery 7 and the battery mounting portion 27 are disposed below the partition wall portion 5, and the battery 7 is mounted on the battery mounting portion 27. The battery 7 mounted on the battery mounting portion 27 is tilted so that its rear end is positioned lower than its front end. The connection terminal 72 of the battery 7 is positioned on the front side of the lower surface of the battery 7, so that the connection terminal 72 is positioned higher than the rear side of the lower surface of the battery 7. In other words, when the battery 7 is mounted on the battery mounting portion 27, the battery mounting portion 27 is positioned on the opposite side of the communication hole 51 from the battery 7 and is configured to be connected to the connection terminal 72. According to this embodiment, the first space IS1 and the second space IS2 are communicated with each other through the communication hole 51, and the airflow AF generated by the airflow generating unit 4 can further improve the cooling efficiency of the battery 7. As a result, workability during high power output can be further improved. Furthermore, according to this embodiment, since the communication hole 51 is located above the battery 7 when the blower 1 is in use, heat generated by the battery 7 flows upward from below toward the communication hole 51 by the ascending air current. Furthermore, the air flow AF allows the heat generated by the battery 7 to be guided to the communication hole 51 without remaining in the first space IS1. Therefore, the blower 1 configured in this manner can exhibit excellent workability at high output.Furthermore, when the blower 1 is not in use (when the blower 1 is placed on a horizontal surface), the lower side of the partition wall 5 slopes diagonally downward from the front to the rear. This configuration allows water droplets adhering to the battery 7 to be guided downward and rearward by its own weight. This prevents short circuits and corrosion of the battery 7 and the battery mounting portion 27 due to the adhesion of water droplets.

[0046] As shown in FIGS. 4 and 5, the air intake hole 21 may include a first air intake hole 211 and a second air intake hole 212. In this case, the first air intake hole 211 is configured to communicate with the first space IS1, and the second air intake hole 212 is configured to communicate with the second space IS2. Outside air taken in through the first air intake hole 211 flows through the first space IS1 as a first air flow AF1. Outside air taken in through the second air intake hole 212 flows through the second space IS2 as a second air flow AF2. In other words, the air flow AF includes a first air flow AF1 and a second air flow AF2. The first air flow AF1 is configured to pass through the first space IS1. The second air flow AF2 is configured to pass through the second space IS2. According to this embodiment, the first airflow AF1 passing through the first space IS1 can more effectively cool the battery 7, and the workability at the time of high output can be further improved.

[0047] Furthermore, a filter 8 is disposed in the filter attachment portion 211a of the first air intake hole 211, and the filter 8 is provided at the rear of the main body 2 so as to cover the first air intake hole 211. In other words, the main body 2 has the filter 8 and is configured to guide the first airflow AF1 to the first space IS1 via the filter 8. The filter 8 also has a collection surface 81 for collecting the target particles contained in the outside air. The collection surface 81 is formed in a circular shape in a plan view and is inclined obliquely upward from the front side to the rear side. In other words, the filter 8 is configured to collect the target particles contained in the first airflow AF1. According to this embodiment, the filter 8 can remove the target particles contained in the outside air while cooling the battery 7.

[0048] The filter 8 is configured to be detachable from the filter attachment portion 211a of the main body 2. By removing the filter 8 from the main body 2, the battery 7 attached inside the first space IS1 can be removed. Furthermore, by being able to remove the filter 8 from the main body 2, the target matter trapped on the trapping surface 81 of the filter 8 can be easily removed from the trapping surface 81.

[0049] Furthermore, the filter 8 and the main body 2 may be configured to be detachable using a mechanism such as a snap fit mechanism, a magnet mechanism, a bayonet mechanism, a screw mechanism, a friction fit mechanism, etc. Specifically, the filter 8 and the main body 2 may be configured to be detachable using a magnet mechanism including magnets 82 arranged above and below the filter 8 and magnets 211b arranged in the filter attachment portions 211a (above and below the first intake holes 211 of the main body 2).

[0050] [others] The blower 1 according to one embodiment may be implemented in the following manner.

[0051] In the embodiment shown in FIG. 5 , the battery 7 is disposed below the first space IS1 and the communication hole 51 is formed above the first space IS1 so that a space is formed between the battery 7 and the portion of the partition wall 5 that defines the communication hole 51. However, this is not limiting. For example, the battery 7 may be disposed above the first space IS1, and the communication hole 51 may be formed above the first space IS1. As shown in FIG. 6 , specifically, the communication hole 51 that communicates the first space IS1 and the second space IS2 is formed in the partition wall 5 above the first space IS1. Furthermore, the battery mounting portion 27 having the communication hole 27a is disposed above the first space IS1, so that the portion of the partition wall 5 that defines the communication hole 51 and the portion of the battery mounting portion 27 that defines the communication hole 27a abut against each other. As a result, the first space IS1 and the second space IS2 are in communication with each other via the communication hole 51 and the communication hole 27a. Furthermore, by attaching the battery 7 to the battery mounting portion 27, the battery 7 is positioned so that at least a portion of the battery 7 covers the communication hole 27a. That is, the battery 7 is positioned so that at least a portion of the battery 7 covers the communication hole 51 via the communication hole 27a. In other words, the battery 7 is positioned so as to cover the communication hole 51. According to this embodiment, the airflow AF is guided directly to at least a portion of the battery 7 via the communication hole 51 of the partition wall 5, thereby enabling efficient cooling of the battery 7. As a result, workability during high power output can be further improved. The battery mounting portion 27 may be configured so that the battery 7 directly abuts against the portion of the partition wall 5 that defines the communication hole 51.

[0052] Furthermore, the battery 7 preferably includes a case 71, and the case 71 preferably has a first opening 711 and a second opening 712. Specifically, as shown in FIG. 6 , when the battery 7 is attached to the battery attachment portion 27, the case 71 has the first opening 711 provided on a surface opposite the communication hole 51 of the case 71 and the second opening 712 provided on the same surface. The first opening 711 and the second opening 712 communicate with each other via an air passage 713. That is, the air passage 713 opens at the first opening 711 on one end side and at the second opening 712 on the other end side. With this configuration, air taken in through the first opening 711 flows toward the second opening 712 via the air passage 713. In other words, the first opening 711 is configured to allow air to flow into the interior of the case 71, and the second opening 712 is connected to the first opening 711 and configured to allow the air that has flowed into the interior of the case 71 to flow out.

[0053] Furthermore, the air passage 713 is arranged to cool the secondary battery housed inside the battery 7. Specifically, the air passage 713 is arranged between the multiple secondary batteries housed inside the battery 7, between the case 71 and the secondary battery, etc. That is, the air passage 713 is arranged near the secondary battery. This allows the secondary battery to be cooled by air circulating inside the air passage 713. Furthermore, the second opening 712 is configured to communicate with the communication hole 51 and the communication hole 27a when the battery 7 is attached to the battery mounting portion 27. That is, the battery 7 is arranged so that the communication hole 51 and the second opening 712 communicate with each other. Therefore, when the battery 7 is attached to the battery mounting portion 27, the second opening 712 is arranged to face the communication hole 51. In other words, when the battery 7 is attached to the blower 1, the communication hole 51 and the second opening 712 are arranged to face each other. It is also possible that the second opening 712 and the communication hole 51 do not communicate with each other, and a space is provided between the second opening 712 and the communication hole 51.

[0054] Furthermore, by positioning the battery mounting portion 27 on the upper surface of the partition wall portion 5, the connection terminal 72 of the battery 7 is positioned above and on the same side as the communication hole 51 with respect to the battery 7. In other words, the battery mounting portion 27 is preferably configured to be positioned on the same side as the communication hole 51 with respect to the battery 7 and to be connected to the connection terminal 72 when the battery 7 is attached to the battery mounting portion 27. According to this embodiment, by positioning the communication hole 51 and the battery mounting portion 27 on the same side of the partition wall portion 5, the communication hole 51 of the partition wall portion 5 and the second opening 712 of the battery 7 are in communication with each other. This allows the airflow AF to be guided directly to at least a portion of the battery 7, thereby enabling more efficient cooling of the battery 7. As a result, operability during high power output can be further improved.

[0055] In the embodiment shown in FIG. 5 , the communication hole 51 of the partition wall 5 is formed above the first space IS1. However, this is not limiting. For example, the communication hole 51 of the partition wall 5 may be formed below the first space IS1, or above and below the first space IS1. Specifically, as shown in FIG. 7 , the communication holes 51 are formed above and below the first space IS1. The communication hole 51 located below the first space IS1 communicates with the communication hole 27a of the battery mounting portion 27. Therefore, when the battery 7 is mounted on the battery mounting portion 27, the communication hole 51 communicates with the first opening 711 and the second opening 712 of the battery 7 via the communication hole 27a. According to this embodiment, the airflow AF is guided into the case 71 of the battery 7 through the communication hole 51 of the partition wall 5, thereby directly cooling the secondary battery stored inside the case 71. Therefore, the blower 1 configured as described above exhibits excellent operability at high output.

[0056] In the embodiment shown in FIG. 5 , the battery 7 is disposed along the lower side of the first space IS1 so as to provide a space between the battery 7 and the portion of the partition wall 5 that defines the communication hole 51, and the communication hole 51 is formed above the first space IS1. However, this is not limiting. For example, the battery 7 may be disposed below the first space IS1 so as to be along the upper side of the first space IS1. Specifically, as shown in FIG. 8 , the battery mounting portion 27 may be configured such that, when the battery 7 is attached to the battery mounting portion 27, the upper surface of the battery 7 abuts against the upper surface of the partition wall 5. The surface of the battery mounting portion 27 on which the battery 7 is attached is inclined so that the rear end is positioned higher than the front end. Due to the relationship between this inclination and the vertical thickness of the battery 7, when the battery 7 is attached to the battery mounting portion 27, the upper surface of the battery 7 abuts against the inner upper surface of the partition wall 5. Furthermore, the battery 7 is configured such that air flows inside the case 71 of the battery 7 by providing a second opening 712 at the top of the case 71 and a first opening 711 on the rear side surface of the case 71 of the battery 7. The first opening 711 and the second opening 712 are configured to communicate with the communication hole 51 when the battery 7 is attached to the battery attachment portion 27. According to this embodiment, the airflow AF taken in through the first air intake hole 211 can flow from the first opening 711 of the battery 7 through the second opening 712, the communication hole 51 of the partition wall portion 5, and into the second space IS2. This allows the secondary battery housed inside the battery 7 to be directly cooled, thereby enabling efficient cooling of the battery 7. As a result, workability during high output can be further improved.

[0057] In the embodiment shown in FIG. 3, the first space IS1 is formed by closing the front end of the partition wall 5 into a cylindrical shape. However, this is not limiting. For example, the first space IS1 may be formed by covering the front end of the partition wall 5 with the rear end surface of the connecting portion 45. Specifically, as shown in FIG. 9, the front end of the partition wall 5 may have an open cylindrical shape, and the spherical rear end surface of the connecting portion 45 may be arranged along the cylindrical shape. In other words, the front of the first space IS1 may be covered by a portion of the axial fan 40. According to this embodiment, by forming the first space IS1 with a portion of the axial fan 40 and the partition wall 5, the blower 1 can be made more compact while improving operability at high output.

[0058] In the embodiment shown in FIG. 2 , the air intake holes 21 are disposed on the rear wall of the main body 2. However, this is not limiting. The air intake holes 21 may be disposed on the circumferential wall of the main body 2 in addition to or instead of the rear wall of the main body 2. Specifically, as shown in FIG. 10 , the air intake holes 21 may be disposed on the left and right sides of the rear side surface of the main body 2. The air intake holes 21 may also be disposed in an upward, downward, rightward, leftward, or a combination thereof. In other words, the air intake holes 21 may open on the rear wall and the circumferential wall of the main body 2, or may open on at least one of the rear wall and the circumferential wall of the main body 2. According to this embodiment, the air intake holes 21 are disposed on the side wall and the circumferential wall, allowing for more external air to be taken in, thereby efficiently cooling the battery 7. As a result, excellent operability can be achieved during high power output.

[0059] In the above embodiment, an example was described in which a detachable blower pipe 3 is attached to the outlet portion 22 of the main body portion 2, but this is not limited to this. For example, the main body portion 2 and the blower pipe 3 may be formed integrally so that the blower pipe 3 cannot be detached from the main body portion 2.

[0060] Furthermore, it may be provided in the following aspects.

[0061] (1) A blower used with a battery attached, comprising a main body portion, the main body portion having an outlet portion, an air flow generating portion, and a partition portion, the outlet portion being provided in front of the main body portion, the air flow generating portion being configured to generate an air flow in the internal space of the main body portion from the rear of the main body portion toward the outlet portion when power is supplied from the battery, the partition portion being positioned to divide the internal space into a first space and a second space, the first space being configured to accommodate the battery, and the second space being located outside the first space and configured to allow the air flow to pass through.

[0062] According to this aspect, the battery is disposed in the first space, which is the internal space of the main body, and the battery can be cooled by the airflow generated by the airflow generating unit, thereby improving workability during high power output.

[0063] (2) In the blower described in (1) above, the partition wall has a communication hole, and the communication hole is configured to communicate the first space with the second space.

[0064] According to this aspect, the first space and the second space are connected by the communication hole, so that the battery can be further cooled by the airflow generated by the airflow generating unit, thereby improving workability during high power output.

[0065] (3) The blower according to (2) above, wherein the battery is disposed so as to cover the communication hole.

[0066] According to this aspect, the airflow is guided directly to at least a portion of the battery through the communication hole in the partition wall, thereby efficiently cooling the battery, thereby further improving operability during high-power operation.

[0067] (4) In the blower described in (2) or (3) above, the battery includes a case, and the case has a first opening and a second opening, wherein the first opening is configured to allow air to flow into the inside of the case, and the second opening is connected to the first opening and configured to allow the air that has flowed into the inside of the case to flow out, and the communication hole and the second opening are positioned opposite each other when the battery is attached to the blower.

[0068] According to this aspect, by arranging the communication hole of the partition portion and the second opening of the battery in a position facing each other, the battery can be cooled more efficiently, and workability at high output can be further improved.

[0069] (5) The blower according to any one of (2) to (4) above, wherein the communication hole is configured to be located above the battery when the blower is in use.

[0070] According to this aspect, since the communication hole is located above the battery when the blower is in use, the air flow (updraft) from below generated by the heat generated by the battery can be guided to the communication hole, thereby enabling the blower to exhibit excellent operability at high output.

[0071] (6) A blower as described in (5) above, wherein the battery has a connection terminal, and the main body further has a battery mounting portion, which is electrically connected to the air flow generating portion and is configured to allow the battery to be attached and detached, and when the battery is attached to the battery mounting portion, is located on the opposite side of the communication hole from the battery and is configured to be connected to the connection terminal.

[0072] According to this aspect, since the communication hole is located above the battery when the blower is in use, the air flow (updraft) from below generated by the heat generated by the battery can be guided to the communication hole, thereby enabling the blower to exhibit excellent operability at high output.

[0073] (7) A blower according to any one of (2) to (4) above, wherein the battery has a connection terminal, and the main body further has a battery mounting portion, which is electrically connected to the air flow generating portion and is configured to allow the battery to be attached and detached, and when the battery is attached to the battery mounting portion, is located on the same side of the battery as the communication hole and is configured to be connected to the connection terminal.

[0074] According to this aspect, since the communication hole and the battery mounting portion are located on the same side of the partition, airflow is guided directly to at least a portion of the battery, thereby enabling efficient cooling of the battery, thereby further improving operability during high-power operation.

[0075] (8) A blower according to any one of (1) to (7) above, wherein the main body further has an intake hole, the intake hole opening into a rear wall of the main body and configured to guide outside air into the second space of the main body.

[0076] According to this aspect, the battery arranged in the first space is cooled via the partition, and an air flow can be efficiently generated by the air flow generating section, thereby further improving workability during high output.

[0077] (9) A blower according to any one of (1) to (8) above, wherein the second space forms a space surrounding the entire periphery of the first space, and the main body further has an intake hole, which opens into a rear wall of the main body and is configured to guide outside air into the second space of the main body.

[0078] According to this aspect, the partition wall is arranged to partition the outer periphery of the first space, and external air is guided into the second space, thereby enabling efficient cooling of the battery and further improving workability during high output.

[0079] (10) A blower according to any one of (1) to (9) above, wherein the main body further has an intake hole, the intake hole opening into a rear wall and a circumferential wall of the main body, and configured to guide outside air into the second space of the main body.

[0080] According to this aspect, by arranging the air intake holes in the side walls and the peripheral wall, it is possible to take in more outside air and efficiently cool the battery, thereby achieving excellent workability at high power output.

[0081] (11) A blower according to any one of (1) to (10) above, wherein the air flow includes a first air flow and a second air flow, the first air flow is configured to pass through the first space, and the second air flow is configured to pass through the second space.

[0082] According to this aspect, the first airflow passing through the first space allows for more effective cooling of the battery, and further improves workability during high power output.

[0083] (12) In the blower described in (11) above, the main body further has a filter and is configured to guide the first air flow to the first space through the filter, and the filter is configured to capture the target to be captured contained in the first air flow.

[0084] According to this aspect, the battery can be cooled while removing the target substance contained in the outside air by the filter.

[0085] (13) The blower according to any one of (1) to (12) above, wherein the air flow generating section is disposed forward of the partition wall section.

[0086] According to this aspect, the battery can be cooled efficiently, improving workability at high power output. In addition, the circumferential size of the main body can be designed to be smaller, which contributes to the miniaturization of the blower.

[0087] (14) The blower according to any one of (1) to (13) above, wherein the airflow generating unit is configured to generate the airflow by an axial flow fan.

[0088] According to this aspect, in a blower equipped with an axial fan, it is possible to efficiently cool the battery, and it is possible to improve workability at high output.

[0089] (15) The blower according to (14) above, wherein the first space is covered at its front by a part of the axial flow fan.

[0090] According to this aspect, by forming the first space by a part of the axial fan and the partition wall, it is possible to reduce the size of the blower and improve the workability at high output. Of course, this is not the case.

[0091] Finally, while various embodiments of the present invention have been described, these are presented by way of example only and are not intended to limit the scope of the invention. The novel embodiments may be embodied in various other forms, and various omissions, substitutions, and modifications may be made without departing from the spirit of the invention. Such embodiments and modifications are intended to be included within the scope and spirit of the invention, as well as within the scope of the inventions and their equivalents as defined in the accompanying claims. [Explanation of symbols]

[0092] 1: Blower 10: Axial flow blower 2: Main body 21: Air intake 211: First intake hole 211a: Filter mounting portion 211a 211b: Magnet 212: Second intake hole 22: Spout part 23: Rectifier plate 24: Motor cover 25: Outer cylinder 25a: Rear outer cylinder part 25b: Front outer cylinder part 26: Handle 261: Throttle lever 26a: Front end 26b: Rear end 27: Battery mounting section 27a: Communication hole 28: Legs 281: Front legs 282: Rear legs 3: Blower pipe 31:Discharge port 32: Fitting part 4: Air flow generating section 40: Axial fan 41: Motor 43: Rotation axis 44: Fan 45:Connection part 46: Wing part 47: Boss 48: Insertion hole 5: Partition wall 51:Communication hole 6: Control unit 7: Battery 71: Case 711: First opening 712: Second opening 713: Air passage 72: Connection terminal 8: Filter 81: Collection surface 82: Magnet AF: Air flow AF1: First air flow AF2: Second air flow IS: interior space IS1: First Space IS2: Second Space IS3: The Third Space O: Axis line

Claims

1. A blower that is used with a battery attached, A main body portion is provided, the main body portion has an outlet portion, an air flow generating portion, and a partition portion, The outlet portion is provided in front of the main body portion, the airflow generating unit is configured to generate an airflow in the internal space of the main body unit from a rear of the main body unit toward the air outlet unit when power is supplied from the battery, the partition wall is arranged to divide the internal space into a first space and a second space, the first space is configured to accommodate the battery; The second space is located outside the first space and configured to allow the air flow to pass through.

2. 2. The blower of claim 1, the partition wall has a communication hole, The communication hole is configured to communicate the first space with the second space.

3. 3. The blower of claim 2, The battery is disposed so as to cover the communication hole.

4. 3. The blower of claim 2, the battery comprises a case; The case has a first opening and a second opening, the first opening is configured to allow air to flow into the interior of the case; the second opening communicates with the first opening and is configured to allow the air that has flowed into the inside of the case to flow out; The blower is disposed in a position where the communication hole and the second opening face each other when the battery is attached to the blower.

5. 3. The blower of claim 2, The communication hole is configured to be located above the battery when the blower is in use.

6. 6. The blower of claim 5, the battery has a connection terminal; the main body further includes a battery mounting portion, The battery mounting portion The battery is electrically connected to the airflow generating unit and is configured to be detachable, a blower configured to be located on the opposite side of the battery from the communication hole when the battery is attached to the battery attachment portion, and to be connected to the connection terminal;

7. 3. The blower of claim 2, the battery has a connection terminal; the main body further includes a battery mounting portion, The battery mounting portion The battery is electrically connected to the airflow generating unit and is configured to be detachable, A blower configured to be located on the same side of the battery as the communication hole and to be connected to the connection terminal when the battery is attached to the battery attachment portion.

8. 2. The blower of claim 1, The main body further has an air intake hole, The intake hole is an opening in the rear wall of the main body; a blower configured to direct outside air into the second space of the body.

9. 2. The blower of claim 1, the second space forms a space that completely surrounds the first space, The main body further has an air intake hole, The intake hole is an opening in the rear wall of the main body; a blower configured to direct outside air into the second space of the body.

10. 2. The blower of claim 1, The main body further has an air intake hole, The intake hole is an opening in a rear wall portion and a circumferential wall portion of the main body portion; a blower configured to direct outside air into the second space of the body.

11. 2. The blower of claim 1, the airflow includes a first airflow and a second airflow; the first air flow is configured to pass through the first space; The blower is configured to pass the second air flow through the second space.

12. 12. The blower of claim 11, The main body portion is Further comprising a filter; configured to direct the first air flow through the filter into the first space; The filter is configured to capture a target substance contained in the first air flow.

13. 2. The blower of claim 1, The airflow generating unit is disposed forward of the partition wall.

14. 2. The blower of claim 1, A blower, wherein the air flow generating unit is configured to generate the air flow by an axial flow fan.

15. 15. The blower of claim 14, a blower, the front of which is covered by a part of the axial flow fan;

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