JP5169119B2 - Portable blower - Google Patents

Description

The present invention relates to operability of a portable blower that is provided with a power source such as an engine and that can selectively perform, for example, suction work for sucking in fallen leaves, dust, and the like and blowing work for blowing them.

An example of a conventional portable blower is shown in FIG. The portable blower 21 is shown in a state of performing a suction operation for sucking, for example, fallen leaves, dust, etc. To briefly describe the configuration, the portable blower 21 includes a main body 21A including an engine 22 and a case 23 as a power source. A fan (not shown) is mounted in the case 23 on one end side (left side) of an output shaft (not shown) of the engine 22, and a suction port (not shown) can be attached to and detached from the case 23. A suction passage portion 25 including a connected suction pipe 24 is disposed, and a blowout passage portion 28 including a blowout port 26 and an L-shaped blower tube 27 detachably connected thereto is disposed on the front surface of the case 23. Yes. The windward (tip) portion of the blowing passage portion 28 is slightly inclined downward, and a dust collecting bag 29 having appropriate air permeability is attached to the wind lower end portion of the blowing pipe 27.
A handle 30 is disposed above the case 23 so as to be orthogonal to the output shaft in a plan view, and a sub handle 31 is disposed in the vicinity of the engine 22 so as to be orthogonal to the handle in a side view.
Here, the suction passage portion 25 is disposed coaxially with the output shaft, and the windward portion of the blowout passage portion 28 is disposed so as to be orthogonal to the suction passage portion 25 in plan view. .
Therefore, when the portable blower 21 performs a suction operation for sucking fallen leaves and dust as shown in the figure, the handle 30 and the sub handle 31 are usually used to suck the fallen leaves and the like from the tip of the suction pipe 24. Are held at the same time so that the suction pipe 24 faces downward.
On the other hand, for example, when performing a blowing operation for blowing leaves, dust, etc., the suction pipe 24 is usually removed if necessary, and the tip is flattened instead of the L-shaped blowout pipe 27 and the dust collection bag 29, for example. A blow-out pipe (not shown) constricted in a shape is attached to the blow-out opening 26, and the handle 30 is held in order to blow off the fallen leaves falling on the ground by the air blown from the tip of the blow-out pipe. Thus, the outlet pipe 27 is inclined obliquely forward and downward, that is, the main body portion 21A is rotated about 45 degrees in the vertical plane with respect to the case where it is used in the suction operation.

  As another example, the sub handle is disposed substantially parallel to the handle below the engine in a side view, so that the sub handle protrudes to the side of the main body even when performing blow work for blowing fallen leaves and the like. Portable blowers that are configured so as not to get in the way are known.

  Further, in Patent Document 1, the axis of the suction passage and the axis of the outlet passage are arranged so as to be substantially parallel to each other in a plan view, and the suction passage turns around the rotation axis of the fan. If it is configured to be able to stop at any position, and if the main body portion is provided with only one handle parallel to both the passage portions parallel to each other, it has this common one handle. There has been proposed a portable blower that can selectively perform both the suction operation and the air blowing operation without changing the posture of the main body in the state.

6-60617

As described above, in the portable blower in which the conventional sub handle protrudes on the side of the main body, the sub handle that is not used at the time of the air blowing operation tends to be an obstacle.
In addition, in a portable blower in which the sub handle is arranged below the engine in a side view substantially parallel to the handle, the handle and the sub handle are gripped during the suction operation, and the suction pipe attached to the suction port is directed downward. The posture with the front and rear of the main body is difficult to maintain the posture of the main body, and the usability is poor. In addition, if the air outlet side is directed to the opposite side of the user's body with the suction pipe attached to the suction port facing downward, it becomes a posture with the left and right of the main body, and it becomes easy to maintain the posture of the main body. Since the user's abdomen and the engine can easily come into contact with each other, safety is reduced. Also, even if the air outlet side facing the user's body side with the suction pipe attached to the suction port facing downward, it becomes a posture with the left and right of the main body, and it becomes easy to maintain the posture of the main body, The blowout pipe and dust bag are in the way, making it unusable.
Further, in the portable blower described in Patent Document 1, when the handle is gripped with the right hand during the suction operation, the user's leg portion and the engine are likely to come into contact with each other, so that safety is lowered. Further, since the suction passage portion is configured to be able to turn around the rotation axis of the fan and to be stopped at an arbitrary position, the cost is increased.
An object of the present invention is to be able to selectively perform sucking work for sucking in fallen leaves, dust and the like and blowing work for blowing them, and the sub handle does not get in the way during the blowing work. It is an object of the present invention to provide an inexpensive portable blower that is easy to maintain the posture of the main body during air blowing work and is easy to use.

In order to achieve the above object, the invention described in claim 1 is driven by a power source such as an engine, an output shaft is connected to the power source, and a fan for blowing air is attached to the output shaft to perform suction or blowing work. This is a portable blower that has a suction port on the output axis of the case housing the fan, a blower outlet on the front side of the case on the outer periphery of the fan, a suction pipe attached to the suction port, and dust collection at the blower outlet It has a mechanism that sucks in fallen leaves and dust by attaching a blow pipe that can be connected to a bag, etc., or a mechanism that blows down fallen leaves and dust by attaching a blow pipe to the outlet, and a throttle trigger at the top of the case A portable blower having a handle disposed so as to be substantially orthogonal to the output shaft in a plan view and having a sub handle disposed substantially parallel to the handle in a side view below the engine at the bottom of the case Oite, the ends of the air outlet side of the sub-handle, characterized in that it is configured to bend upward.
The invention according to claim 2 is characterized in that, in the invention according to claim 1, the portion located just below the output shaft in a side view of the sub handle is configured to bend upward.
According to a third aspect of the invention, in the invention according to any one of the first to second aspects, when the main body is grounded, the bottom surfaces of both ends of the upward curved portion located almost directly below the output shaft of the sub handle are It is configured to be grounded.
According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the surface of the sub handle has a plurality of concave portions oriented substantially perpendicular to the longitudinal direction.
The invention according to claim 5 is characterized in that in the invention according to any one of claims 1 to 4, a flexible elastic member is provided on at least a part of the surface of the sub handle.
The invention described in claim 6 is the invention described in any one of claims 1 to 5, characterized in that a flexible elastic member is provided on at least a part of the surface of the handle.

According to the first aspect of the present invention, since the end on the outlet side of the sub handle of the portable blower is bent upward, the bent portion of the handle and the bent portion of the sub handle can be If you hold it at the same time and point the suction pipe attached to the suction port downward, the hand holding the handle and the sub handle will grip the main body at a diagonal position, making it closer to the posture of holding the main body from both sides. Therefore, it becomes easy to maintain the posture of the main body, and the operability is improved.
According to the second aspect of the present invention, since the portion located directly below the output shaft in the side view of the sub handle is configured to bend upward, the bent portion of the handle and the bent portion of the sub handle are bent during the suction operation. When holding the parts simultaneously, if the curved part is applied to the user's abdomen, the posture of the main body can be made more stable and the suction work can be performed.
According to the third aspect of the present invention, when the main body is grounded, both bottom surfaces of the upward curved portion located almost directly below the output shaft of the sub handle are grounded. Can be grounded in a more stable state.
According to the fourth aspect of the present invention, since the surface of the sub handle has the plurality of concave portions oriented substantially perpendicular to the longitudinal direction, the hand holding the sub handle is less likely to slip.
According to the fifth aspect of the present invention, since the flexible elastic member is provided on at least a part of the surface of the sub handle, the hand holding the sub handle is less likely to slip.
According to the sixth aspect of the present invention, since the flexible elastic member is provided on at least one part of the surface of the handle, the hand holding the handle is less likely to slip.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
1 is a right side view showing a portable blower according to an embodiment of the present invention, FIG. 2 is a left side view of the portable blower, FIG. 3 is a partial cross-sectional view along line AA in FIG. 1, and FIG. FIG. 5 is a front view showing a state where a suction pipe is attached to the suction port of the portable blower, FIG. 6 is a perspective view showing suction work of the portable blower, and FIG. FIG. 8 is a left side view showing a state in which an outlet pipe is attached to the outlet of the portable blower.
As shown in FIGS. 1 to 3, the portable blower 1 includes a main body 1 </ b> A including an engine 5 as a power source, an output shaft 6, a case 2 for housing a fan 7, and the like as main parts. An electric motor may be used as a power source.
More specifically, the case 2 includes a first case 2 a that covers the side opposite to the output shaft 6 side of the fan 7, a second case 2 b that covers the output shaft 6 side of the fan 7, and a third case that partially covers the engine 5. 2c. And the suction port 8 is provided in the left side center part of the main-body part 1A on the extension line of the output shaft 6 formed of the 1st case 2a. The suction port 8 is covered with a cover 3 having an air hole 4. Further, a substantially cylindrical air outlet 10 is provided on the outer periphery of the fan 7 formed by the first case 2a and the second case 2b at the front upper portion of the main body 1A.
A handle 14 formed by the second case 2b and the third case 2c is disposed above the case 2 so as to be substantially orthogonal to the output shaft in plan view. The handle 14 accommodates a throttle trigger 15 at the outlet 11 side end, and further includes a throttle lever 16 on the left side surface of the handle 14 on the outlet 10 side. The throttle trigger 15 can be locked on by rotating the throttle lever 16 about 40 degrees clockwise as viewed from the left side. Further, the end portion of the handle 14 on the side opposite to the air outlet 11 is bent downward to form a handle bent portion 14a. Further, a flexible elastic member 18 such as rubber or foam urethane is provided on a part of the surface of the handle 14 to prevent slipping (the hatched portion in FIGS. 1 and 2).
On the other hand, a sub handle 17 is arranged substantially parallel to the handle 14 in a side view, below the engine 3 and below the engine 5. Further, the sub handle 17 has an end on the air outlet side bent upward to form a sub handle bent portion 17a. Further, the sub handle 17 is curved upward at a portion located almost directly below the output shaft 6 in a side view. Since the bottom surfaces of both ends of the curved portion 17b are arranged so as to be grounded when the main body 1A is grounded, the main body 1A can be placed in a more stable state.
As shown in FIG. 4, a plurality of recesses 17 c for preventing slip are provided on the right side surface of the sub handle 17 in a direction substantially perpendicular to the longitudinal direction of the sub handle 17. Further, on the left side surface of the sub handle 17, a plurality of ribs 17d for reducing the thickness are provided.
As shown in FIGS. 5 to 7, when the portable blower 1 is used for suction work, the fixing screw (not shown) of the cover 3 is removed, and the cover 3 is rotated downward about the hinge 19. The suction passage 8 is formed by exposing the suction port 8 and detachably attaching the suction pipe 9 to the suction port 8. On the other hand, the blowing passage 12 is formed by detachably attaching the blowing pipe 12 to the blowing outlet 11. The end of the outlet pipe 12 opposite to the outlet 11 is inserted into the opening 20a of the dust bag 20 having appropriate air permeability. The user W holds the handle 14 and the sub handle 17 at the same time, hangs the strap 20b of the dust bag 20 on the shoulder, maintains the main body 1A in such a posture that the suction pipe 9 faces diagonally forward and downward. The fallen leaves falling on the ground from the tip are sucked and collected in the dust bag 20.
At this time, if the throttle trigger 15 is turned on, it becomes unnecessary to operate the throttle trigger 15 and the handle bending portion 14a can be grasped with the hand X to perform the suction work. Further, if the sub handle bending portion 17a is simultaneously grasped by the other hand X, the main body portion 1A is grasped at a diagonal position, and the posture of the main body portion 1A is close to the posture having the main body portion 1A from both sides. Is easier to maintain, and the operability is improved. Moreover, if the bending part 17b is applied to a user's abdomen, the main-body part 1A will be hold | maintained at three places, and the suction | inhalation operation | work can be performed with the attitude | position of the main-body part 1A more stabilized. More preferably, if a flexible elastic member such as rubber or foaming urethane is provided on the surface of the sub handle bending portion 17a, the anti-slip effect is enhanced and the operability is improved.
As shown in FIG. 8, when the portable blower 1 is used for blowing work, the blowing passage portion 13 is formed by attaching a blowing work blowing pipe 12 </ b> A whose tip is narrowed flatly to the blowing outlet 11. It is formed. Then, the handle 14 is held with one hand, and the blowing pipe 12A for air blowing work is turned obliquely forward and downward, that is, the main body 1A is rotated about 45 degrees in the vertical plane with respect to the case of using the suction work. Hold in posture. And the fallen leaves etc. which are falling on the ground are blown off by the air which blows off from the front-end | tip of the blowing pipe 12A for ventilation work.
At this time, if the throttle trigger 15 is turned on, it becomes unnecessary to operate the throttle trigger 15, and the air blowing operation can be performed while holding the handle bending portion 14a. When the handle bending portion 14a is gripped, the blowing work outlet pipe 12A is directed downward, so that it is easier to perform the blowing work than when gripping the portion of the handle 14 near the outlet 11.
In addition, when the handle 14 is gripped with the right hand and the air blowing operation is performed, the left side surface (suction port 8 side) of the main body 1A can easily touch the user's leg, but the suction port 8 is covered with the cover 3. Because it is safe.
Furthermore, since the portable blower 1 described above can be configured without using special parts or materials, it can be provided at low cost.

It is a right view which shows the portable blower which concerns on embodiment of this invention. It is a left view which shows the portable blower which concerns on embodiment of this invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a front view which shows the state which attached the suction pipe for suction work to the suction inlet of the portable blower which concerns on embodiment of this invention. It is a perspective view which shows the suction work by the portable blower which concerns on embodiment of this invention. It is a right view which shows the suction work by the portable blower which concerns on embodiment of this invention. It is a front view which shows the state which attached the blowing pipe for ventilation work to the blower outlet of the portable blower which concerns on embodiment of this invention. It is a perspective view which shows an example of the conventional portable blower.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable blower 1A Main-body part 2 Case 2a 1st case 2b 2nd case 2c 3rd case 3 Cover 4 Air hole 5 Engine 6 Output shaft 7 Fan 8 Suction port 9 Suction pipe 10 Suction passage part 11 Outlet 12 Outlet pipe 12A Work outlet pipe 13 Blowout passage section 14 Handle 14a Handle bent section 15 Throttle trigger 16 Throttle lever 17 Sub handle 17a Sub handle bent section 17b Curved section 17c Recessed section 17d Rib 18 Elastic member 19 Hinge 20 Dust collection bag 20a Opening section 20b Strap W User X hand

Claims (6)

A portable blower that is driven by a power source such as an engine and that has an output shaft connected to the power source and a fan that blows air is attached to the output shaft and performs suction or blowing work, and outputs the case that houses the fan By installing a suction port on the axis, a blower outlet on the front side of the case on the outer periphery of the fan, a suction pipe attached to the suction port, and a blower pipe that can be connected to a dust bag or the like attached to the blower outlet. Has a mechanism that sucks in, etc., or has a mechanism that blows leaves, dust, etc. by attaching a blow pipe to the blow outlet, and houses a throttle trigger at the top of the case so that it is almost orthogonal to the output shaft in plan view It has arranged a handle, in a portable blower having a ground portion for grounding when placing the sub-handle and body portion that is substantially parallel to the handle as viewed from the side below the engine case bottom, Ha Dollar ends of the air outlet side opposite bent downward of and end of the air outlet side of the sub-handle is configured to bend upwardly, the ends of the sub-handle which are bent, the grounding portion in a side view A portable blower characterized by being located closer to the air outlet .   2. The portable blower according to claim 1, wherein a portion of the sub handle that is located directly below the output shaft in a side view is curved upward.   3. The portable blower according to claim 1, wherein when the main body is grounded, the bottom surfaces of both ends of the upward curved portion located almost directly below the output shaft of the sub handle are grounded. The portable blower according to claim 1, wherein the portable blower is provided.   The portable blower according to any one of claims 1 to 3, wherein the surface of the sub handle has a plurality of concave portions oriented substantially perpendicular to the longitudinal direction of the sub handle. Portable blower according to crab.   The portable blower according to any one of claims 1 to 4, further comprising a flexible elastic member on at least a part of the surface of the sub handle. Blower.   The portable blower according to any one of claims 1 to 5, wherein a flexible elastic member is provided on at least a part of a surface of the handle. .

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