JP7570199B2 - Blower - Google Patents

Description

The technology disclosed in this specification relates to blowers.

Patent Document 1 discloses a blower. The blower includes an electric motor, a fan driven by the electric motor, a motor housing in which the electric motor is disposed and which has an air passage through which air flows as the fan rotates, and an ejection nozzle which communicates with the downstream end of the air passage in the air flow direction and has a downstream passage through which air flows. The ejection nozzle is directly connected to the motor housing.

JP 2016-78005 A

In the above blower, when the electric motor rotates, the motor housing vibrates. Because the ejection nozzle is directly connected to the motor housing, the vibration of the motor housing is transmitted to the ejection nozzle. This specification discloses a technology that can suppress the vibration of the motor housing caused by the rotation of the electric motor from being transmitted to other components.

This specification discloses a blower. The blower includes an electric motor, a fan driven by the electric motor, a motor housing in which the electric motor is disposed and which has an air passage through which air flows as the fan rotates, an ejection nozzle which communicates with the downstream end of the air passage in the air flow direction and has a downstream passage through which air flows, and a first vibration-proof member sandwiched between the motor housing and the ejection nozzle.

In the above configuration, the first vibration-proof member can prevent vibrations of the motor housing caused by the rotation of the electric motor from being transmitted to the ejection nozzle. This makes it possible to prevent vibrations of the motor housing from being transmitted to other components.

FIG. 2 is a perspective view of the blower 2 of the first embodiment as viewed from the rear right side. FIG. 2 is a perspective view of the blower 2 of the first embodiment as viewed from the front left side. FIG. 1 is a view of the vicinity of the trigger 14 of the blower 2 with the right grip housing 20 removed according to the first embodiment, as viewed from the right side. FIG. 2 is a perspective view of the blower 2 of the first embodiment with the right grip housing 20 removed, as viewed from the rear right side. 10 is a cross-sectional view of the blower 2 as viewed from the rear side in the vicinity of a third vibration-isolating member 78 of the first embodiment. FIG. FIG. 2 is a cross-sectional view of the blower 2 with the grip housing 10 of the first embodiment removed. FIG. 11 is a view of the blower 2 of the second embodiment as seen from the right side.

Representative, non-limiting examples of the present invention are described in detail below with reference to the drawings. This detailed description is intended simply to provide those skilled in the art with details for implementing preferred examples of the present invention, and is not intended to limit the scope of the present invention. Additionally, the additional features and inventions disclosed can be used separately or in conjunction with other features and inventions to provide further improved blowers.

In addition, the combinations of features and steps disclosed in the following detailed description are not essential to the implementation of the present invention in the broadest sense, but are described only to specifically illustrate representative examples of the present invention. Furthermore, the various features of the following representative examples, as well as the various features described in the claims, do not have to be combined in the exact order of the examples described herein or in the order listed to provide additional and useful embodiments of the present invention.

All features described in the specification and/or claims are intended to be disclosed individually and independently of one another as limitations to the specific features described in the original disclosure and claims, apart from the configuration of features described in the examples and/or claims. Furthermore, all numerical ranges and group or collective descriptions are intended to disclose intermediate configurations thereof as limitations to the specific features described in the original disclosure and claims.

In one or more embodiments, the blower may further include a rear housing that is connected to the upstream end of the air passage in the air flow direction and has an upstream passage through which air flows, and a second vibration isolation member that is sandwiched between the motor housing and the rear housing.

In the above configuration, the second vibration-proof member can prevent vibrations of the motor housing caused by the rotation of the electric motor from being transmitted to the rear housing. This makes it possible to prevent vibrations of the motor housing from being transmitted to other components.

In one or more embodiments, the blower may further include a grip housing to which the rear housing and the ejection nozzle are fixed. The motor housing may not be directly connected to the grip housing.

In the above configuration, the vibrations of the motor housing caused by the rotation of the electric motor are prevented from being transmitted to the ejection nozzle or rear housing, and the motor housing and the grip housing are not directly connected. With this configuration, the vibrations of the motor housing caused by the rotation of the electric motor are prevented from being transmitted to the grip housing.

In one or more embodiments, the blower may further include a third vibration-damping member. The motor housing may include a protrusion that protrudes toward the grip housing. The grip housing may include a receiving portion that receives the protrusion. The third vibration-damping member may be sandwiched between the protrusion and the receiving portion.

In the above configuration, the grip housing and the motor housing are connected via a third vibration-proof member. This makes it possible to prevent the position of the motor housing from changing relative to the grip housing.

In one or more embodiments, the first vibration-damping member may be made of an elastic material.

In the above configuration, the first vibration-proof member elastically deforms, thereby preventing vibrations in the motor housing caused by the rotation of the electric motor from being transmitted to the ejection nozzle.

In one or more embodiments, the blower may further include a power cord that provides power to the electric motor from an external power source.

The above configuration allows the blower to be lighter than if it were equipped with a battery.

In one or more embodiments, the blower may further include a battery that powers the electric motor.

With the above configuration, the blower can be used even if an external power source is not located near the work area.

(First embodiment)
A blower 2 according to a first embodiment will be described with reference to Figures 1 to 6. The blower 2 is used to blow away fallen leaves and the like. As shown in Figures 1 and 2, the blower 2 includes a grip housing 10, a power cord 12, a trigger 14, a cruise control lever 16, and a control unit 18 (see Figure 4). In the following description, the longitudinal direction of the blower 2 is referred to as the front-rear direction, the direction perpendicular to the front-rear direction is referred to as the up-down direction of the blower 2, and the direction perpendicular to the front-rear direction and the up-down direction is referred to as the left-right direction of the blower 2.

The grip housing 10 is composed of a right grip housing 20 and a left grip housing 22. The right grip housing 20 defines the outer shape of the right half of the grip housing 10, and the left grip housing 22 defines the outer shape of the left half of the grip housing 10. The grip housing 10 comprises a first housing 26, a second housing 28, a third housing 30, and a fourth housing 32. The first housing 26, the second housing 28, the third housing 30, and the fourth housing 32 are integrally formed. The first housing 26 extends in the longitudinal direction.

The second housing 28 extends from the front of the top surface of the first housing 26 toward the upper rear side. The third housing 30 extends from the rear of the top surface of the first housing 26 toward the upper rear side. The fourth housing 32 extends from the upper part of the rear surface of the second housing 28 toward the upper part of the front surface of the third housing 30. The cross-sectional shape of the fourth housing 32 is approximately circular. The fourth housing 32 is held by an operator. The power cord 12 is connected to the rear surface of the third housing 30. Power is supplied to the blower 2 via the power cord 12. The power cord 12 is connected, for example, to a backpack battery carried on the back of the operator, or to an external power source.

A main power switch 36 and a main power LED 38 are arranged on the top surface of the third housing 30. The main power switch 36 accepts operation by an operator to switch the blower 2 between the on and off states. The main power LED 38 indicates the on and off states of the blower 2.

The trigger 14 is attached to the front lower part of the fourth housing 32. The operator can operate the trigger 14 with the fingers of the hand holding the fourth housing 32. As shown in FIG. 3, the trigger 14 includes a trigger operating portion 42, a trigger protrusion 44, and a switch pressing portion 46. The trigger operating portion 42, the trigger protrusion 44, and the switch pressing portion 46 are integrally formed. The trigger operating portion 42 is supported by the second housing 28 so as to be rotatable around a rotation axis AX1. When the trigger operating portion 42 is pressed by the operator, the trigger operating portion 42 rotates around the rotation axis AX1. The rotation axis AX1 is disposed at the front end of the trigger operating portion 42. Even when the trigger 14 is completely pressed by the operator, the trigger operating portion 42 protrudes downward from the bottom surface of the fourth housing 32.

The trigger protrusion 44 and the switch pressing portion 46 are disposed inside the second housing 28. The trigger protrusion 44 is disposed at the front end of the trigger operating portion 42. The trigger protrusion 44 extends in a direction substantially perpendicular to the upper surface of the trigger operating portion 42. The switch pressing portion 46 is disposed at the front end of the trigger operating portion 42. The switch pressing portion 46 extends from the trigger operating portion 42 toward the front upper side. The trigger protrusion 44 and the switch pressing portion 46 rotate together with the trigger operating portion 42 around the rotation axis AX1. When the switch pressing portion 46 rotates, the switch pressing portion 46 presses the first switch 118 downward. Also, when the trigger protrusion 44 rotates beyond a predetermined position, the plate member 124 is pushed toward the rear side, and the second switch 120 is pressed.

As shown in FIG. 2, the cruise control lever 16 is attached to the second housing 28 near the connection point between the second housing 28 and the fourth housing 32. The cruise control lever 16 can rotate around the rotation axis AX2. The cruise control lever 16 includes a lever operating part 50 and a stopper part 56 (see FIG. 3). The lever operating part 50 is disposed outside the second housing 28. The lever operating part 50 is operated by an operator. As shown in FIG. 3, the stopper part 56 is disposed inside the second housing 28. When the lever operating part 50 is operated, the stopper part 56 rotates around the rotation axis AX2. The stopper part 56 can abut against the trigger protrusion 44 from the rear side. When the stopper part 56 abuts against the trigger protrusion 44 and is fixed at the desired position, the trigger protrusion 44 cannot return to the rear side. This maintains the trigger 14 in a pressed-in state.

As shown in FIG. 4, a receiving portion 60 is formed inside the first housing 26. The receiving portion 60 is disposed on the rear side of the connection between the first housing 26 and the second housing 28. As shown in FIG. 5, the receiving portion 60 includes a base portion 60a, a first rib portion 60b, and a second rib portion 60c. The base portion 60a extends from the inner surface of the left grip housing 22 toward the right side. When the base portion 60a is viewed from the left side, the central region in the front-rear direction of the base portion 60a has a shape that is concave upward. The lower end and the right end of the base portion 60a are open. The first rib portion 60b extends from the inner surface of the left grip housing 22 toward the right side. The first rib portion 60b is disposed in the concave portion of the base portion 60a. The right end of the first rib portion 60b is disposed to the left of the right end of the base portion 60a. The second rib portion 60c extends from the inner surface of the right grip housing 20 toward the left side. The left end of the second rib portion 60c closes the right end of the base portion 60a. The base portion 60a, the first rib portion 60b, and the second rib portion 60c define a space 60d.

An opening 62 is formed on the front surface of the first housing 26. The opening 62 is located near the connection point between the first housing 26 and the second housing 28. The opening 62 connects the inside and outside of the grip housing 10. A control unit 18 is also located inside the first housing 26. The control unit 18 is located along the front-rear and left-right directions. The control unit 18 is located near the connection point between the first housing 26 and the second housing 28. In the up-down direction, the control unit 18 is located above the opening 62. Although not shown in the figure, the control unit 18 is composed of a control board having a microcomputer and multiple switching elements, and a case to which the control board is attached. The switching elements are, for example, IGBTs or MOSFETs. The switching elements are switched between an on state and an off state by being controlled by the microcomputer.

The blower 2 further includes a motor housing 66, a rear housing 68, a jet nozzle 70, a cover member 72, a first vibration-isolating member 74, a second vibration-isolating member 76, and a third vibration-isolating member 78. The motor housing 66 is disposed inside the first housing 26. The rear housing 68 is connected to the rear end of the motor housing 66 and protrudes rearward from the rear end of the first housing 26. The rear housing 68 is also fixed to the first housing 26. The jet nozzle 70 is connected to the front end of the motor housing 66 and protrudes frontward from the front end of the first housing 26. The jet nozzle 70 is also fixed to the first housing 26.

As shown in FIG. 6, the motor housing 66 includes an outer tubular member 80, a front wall portion 80a, a rear wall portion 80b, a protrusion 80c, a plurality of fins 96, an inner tubular member 98, and a cover member 100. The outer tubular member 80 has a cylindrical shape extending in the front-rear direction. The outer tubular member 80 has an air passage 82 inside. The front wall portion 80a extends outward from the vicinity of the front end of the outer circumferential surface of the outer tubular member 80. The front wall portion 80a extends along the circumferential direction of the outer circumferential surface of the outer tubular member 80. The rear wall portion 80b extends outward from the vicinity of the rear end of the outer circumferential surface of the outer tubular member 80. The rear wall portion 80b extends along the circumferential direction of the outer circumferential surface of the outer tubular member 80. The protrusion 80c protrudes upward from the outer circumferential surface of the outer tubular member 80 toward the grip housing 10. The protrusion 80c is located in the center between the front wall portion 80a and the rear wall portion 80b. As shown in FIG. 5, the protrusion 80c is received in the receiving portion 60. The upper end of the protrusion 80c is located in the space 60d of the receiving portion 60.

As shown in FIG. 6, the first vibration-isolating member 74 is attached to the front end of the outer peripheral surface of the outer tubular member 80. The first vibration-isolating member 74 is made of, for example, an elastic material. The first vibration-isolating member 74 is, for example, an O-ring. The first vibration-isolating member 74 surrounds the outer peripheral surface of the outer tubular member 80. The first vibration-isolating member 74 abuts the front wall portion 80a from the front side. The second vibration-isolating member 76 is attached to the rear end of the outer peripheral surface of the outer tubular member 80. The second vibration-isolating member 76 is made of the same material as the first vibration-isolating member 74. The second vibration-isolating member 76 is, for example, an O-ring. The second vibration-isolating member 76 surrounds the outer peripheral surface of the outer tubular member 80. The second vibration-isolating member 76 abuts the rear wall portion 80b from the rear side. The third vibration-isolating member 78 is attached to the protrusion 80c of the outer tubular member 80. As shown in FIG. 4, the front and rear sides of the third vibration-isolating member 78 are covered by the base 60a. The third vibration-isolating member 78 is made of the same material as the first vibration-isolating member 74. As shown in FIG. 5, the third vibration-isolating member 78 includes a bottom portion 78a, an intermediate portion 78b, and a head portion 78c. The intermediate portion 78b is disposed above the bottom portion 78a. The diameter of the outer peripheral surface of the intermediate portion 78b is smaller than the diameter of the outer peripheral surface of the bottom portion 78a. The head portion 78c is disposed above the intermediate portion 78b. The diameter of the lower end of the outer peripheral surface of the head portion 78c is the same as the diameter of the outer peripheral surface of the intermediate portion 78b. The diameter of the outer peripheral surface of the head portion 78c decreases toward the upper side. In addition, the third vibration-isolating member 78 is formed with a through hole 79 extending in the vertical direction. A protrusion 80c is inserted into the through hole 79. With the third vibration-proofing member 78 attached to the protrusion 80c, the third vibration-proofing member 78 is inserted into the space 60d of the receiving portion 60. The third vibration-proofing member 78 is sandwiched between the protrusion 80c and the base 60a. This prevents the third vibration-proofing member 78 from moving in the front-rear direction. As shown in FIG. 5, when the third vibration-proofing member 78 moves to the right, the bottom portion 78a abuts against the second rib portion 60c, and when the third vibration-proofing member 78 moves to the left, the middle portion 78b abuts against the first rib portion 60b. This prevents the third vibration-proofing member 78 from moving in the left-right direction. Therefore, the motor housing 66 is prevented from moving in the front-rear direction relative to the grip housing 10, and the motor housing 66 is prevented from rotating around an axis extending in the front-rear direction relative to the grip housing 10.

As shown in FIG. 6, the rear housing 68 has a cylindrical shape in which the diameter of the inner circumferential surface decreases from the rear side to the front side. The diameter of the inner circumferential surface of the rear housing 68 at the front end is larger than the diameter of the outer circumferential surface of the outer tubular member 80. The rear housing 68 has an upstream passage 84 inside. The upstream passage 84 is connected to the upstream end of the air passage 82. A wall portion 68a is formed near the front end of the inner circumferential surface of the rear housing 68. The wall portion 68a extends inward from the inner circumferential surface of the rear housing 68. The wall portion 68a extends along the circumferential direction of the inner circumferential surface of the rear housing 68. The second vibration-proof member 76 abuts the front end of the inner circumferential surface of the rear housing 68. The second vibration-proof member 76 is sandwiched between the wall portion 68a of the rear housing 68 and the rear wall portion 80b of the outer tubular member 80 in the front-rear direction. By using the second vibration-proof member 76, the gap formed between the rear housing 68 and the outer tubular member 80 can be filled. This prevents air flowing from the upstream passage 84 of the rear housing 68 to the air passage 82 of the motor housing 66 from leaking out from the gap between the rear housing 68 and the motor housing 66. As shown in FIG. 4, when the second vibration-proof member 76 is sandwiched between the wall portion 68a of the rear housing 68 and the rear wall portion 80b of the outer tubular member 80, the second vibration-proof member 76 is separated from the first housing 26 and does not abut against the first housing 26. A cover member 72 is attached to the rear end of the rear housing 68. The cover member 72 covers the rear end opening of the rear housing 68. The cover member 72 has a plurality of intake holes 72a. The plurality of 72a penetrate the cover member 72 in the front-rear direction. The plurality of intake holes 72a communicates the outside of the blower 2 with the upstream passage 84 of the rear housing 68.

As shown in FIG. 6, the ejection nozzle 70 includes a first ejection nozzle 86 and a second ejection nozzle 88 (see FIG. 1). The second ejection nozzle 88 is detachably attached to the front of the first ejection nozzle 86. The first ejection nozzle 86 and the second ejection nozzle 88 have a cylindrical shape. As shown in FIG. 6, the first ejection nozzle 86 and the second ejection nozzle 88 have a downstream passage 90 therein. The downstream passage 90 is connected to the downstream end of the air passage 82. The diameter of the inner circumferential surface of the first ejection nozzle 86 at the rear end is larger than the diameter of the outer circumferential surface of the outer tubular member 80. A wall portion 86b is formed near the rear end of the inner circumferential surface of the first ejection nozzle 86. The wall portion 86b extends inward from the inner circumferential surface of the first ejection nozzle 86. The wall portion 86b extends along the inner circumferential surface of the first ejection nozzle 86. A first vibration-proof member 74 abuts against the rear end of the inner circumferential surface of the first jet nozzle 86. The first vibration-proof member 74 is sandwiched between the wall portion 86b of the first jet nozzle 86 and the front wall portion 80a of the outer tubular member 80 in the front-rear direction. By using the first vibration-proof member 74, the gap formed between the first jet nozzle 86 and the outer tubular member 80 can be filled. This prevents air flowing from the air passage 82 of the motor housing 66 to the downstream passage 90 of the first jet nozzle 86 from leaking outward from the gap between the first jet nozzle 86 and the motor housing 66. As shown in FIG. 4, when the first vibration-proof member 74 is sandwiched between the wall portion 86b of the first jet nozzle 86 and the front wall portion 80a of the outer tubular member 80, the first vibration-proof member 74 is separated from the first housing 26 and does not abut against the first housing 26. An opening 86a is formed at the upper end of the first jet nozzle 86. The opening 86a is located below the control unit 18.

Referring to FIG. 6, the multiple fins 96, the inner tubular member 98, and the cover member 100 will be described. The multiple fins 96, the inner tubular member 98, and the outer tubular member 80 are integrally formed. The multiple fins 96 extend from the inner peripheral surface of the outer tubular member 80 toward the central axis of the outer tubular member 80. Although not shown, the multiple fins 96 are arranged at equal intervals from each other in the circumferential direction on the inner peripheral surface of the outer tubular member 80.

The inner tubular member 98 is disposed inside the outer tubular member 80. The inner tubular member 98 extends in the front-rear direction. A plurality of fins 96 extending from the inner circumferential surface of the outer tubular member 80 are connected to the outer circumferential surface of the inner tubular member 98. A lid member 100 is attached to the rear end of the inner tubular member 98. The lid member 100 closes a rear end opening 102 of the inner tubular member 98. A plurality of holes (not shown) are formed in the rear end of the lid member 100. A cone 104 is attached to the front end of the inner tubular member 98. The diameter of the outer circumferential surface of the cone 104 decreases from the rear side to the front side. A tip opening is formed at the tip of the cone 104.

The blower 2 further includes an electric motor 106 and a fan 108. The electric motor 106 is, for example, an inner rotor type brushless motor. The electric motor 106 is disposed inside the inner cylinder member 98. The operation of the electric motor 106 is controlled by a microcomputer (not shown) of the control unit 18 executing control to switch a switching element (not shown) between an on state and an off state. When the first switch 118 is pressed, the electric motor 106 is controlled to a rotation speed according to the amount of pressing of the first switch 118. Note that as the amount of pressing of the first switch 118 increases, the rotation speed of the electric motor 106 increases. On the other hand, when the second switch 120 is pressed, the electric motor 106 is controlled to a predetermined rotation speed. In this embodiment, the rotation speed of the electric motor 106 when the second switch 120 is pressed is greater than the maximum value of the rotation speed of the electric motor 106 when the first switch 118 is pressed.

The fan 108 is, for example, an axial fan. The fan 108 rotates integrally with the shaft 114 of the electric motor 106 when driven by the electric motor 106.

Next, the blowing operation using the blower 2 will be described. When the operator operates the trigger 14 while the blower 2 is in the on state, the electric motor 106 is driven by the control of the control unit 18. The fan 108 rotates integrally with the shaft 114 of the electric motor 106. When the fan 108 rotates, negative pressure is generated behind the fan 108. As a result, air flows from the multiple intake holes 72a of the cover member 72 into the upstream passage 84 of the rear housing 68 and flows into the air passage 82 of the outer tubular member 80. The air is then sent further downstream by the fan 108, flows through the downstream passage 90, and flows out from the tip opening of the second ejection nozzle 88. In addition, a portion of the air sent out by the fan 108 enters the inside of the inner tubular member 98 from multiple holes (not shown) formed at the rear end of the cover member 100, flows inside the inner tubular member 98 toward the front side, and then flows from the tip opening of the cone 104 to the downstream passage 90. This cools the electric motor 106. Furthermore, a portion of the air flowing through the downstream passage 90 passes through the opening 86a and flows out of the first ejection nozzle 86. The air flows between the bottom surface of the control unit 18 and the outer circumferential surface of the first ejection nozzle 86, and flows out of the grip housing 10 through the opening 62. This cools the control unit 18.

While the electric motor 106 is driven, the electric motor 106 vibrates. The vibration of the electric motor 106 is transmitted in the order of the inner tubular member 98, the multiple fins 96, and the outer tubular member 80. This causes the motor housing 66 itself to vibrate. However, in the blower 2 of this embodiment, the first vibration-proof member 74 prevents the vibration of the motor housing 66 from being transmitted to the ejection nozzle 70, the second vibration-proof member 76 prevents the vibration of the motor housing 66 from being transmitted to the rear housing 68, and the third vibration-proof member 78 prevents the vibration of the motor housing 66 from being transmitted to the grip housing 10. As a result, the vibration is prevented from being transmitted to the operator holding the fourth housing 32.

(effect)
The blower 2 of this embodiment includes an electric motor 106, a fan 108 driven by the electric motor 106, a motor housing 66 in which the electric motor 106 is disposed and which has an air passage 82 through which air flows as the fan 108 rotates, an ejection nozzle 70 which communicates with the downstream end of the air passage 82 in the air flow direction and which has a downstream passage 90 through which air flows, and a first vibration-proof member 74 which is sandwiched between the motor housing 66 and the ejection nozzle 70. In this configuration, the first vibration-proof member 74 can suppress the vibration of the motor housing 66 generated by the rotation of the electric motor 106 from being transmitted to the ejection nozzle 70. This makes it possible to suppress the vibration of the motor housing 66 from being transmitted to other members.

As shown in FIG. 6, the blower 2 further includes a rear housing 68 that is connected to the upstream end of the air passage 82 in the air flow direction and has an upstream passage 84 through which air flows, and a second vibration-proof member 76 that is sandwiched between the motor housing 66 and the rear housing 68. In this configuration, the second vibration-proof member 76 can suppress the transmission of vibrations of the motor housing 66 generated by the rotation of the electric motor 106 to the rear housing 68. This makes it possible to suppress the transmission of vibrations of the motor housing 66 to the rear housing 68.

The blower 2 further includes a grip housing 10 to which the rear housing 68 and the ejection nozzle 70 are fixed. As shown in FIG. 4, the motor housing 66 is not directly connected to the grip housing 10. In this configuration, the vibrations of the motor housing 66 caused by the rotation of the electric motor 106 are prevented from being transmitted to the ejection nozzle 70 or the rear housing 68, and the motor housing 66 and the grip housing 10 are not directly connected. With this configuration, the vibrations of the motor housing 66 caused by the rotation of the electric motor 106 can be prevented from being transmitted to the grip housing 10.

The blower 2 further includes a third vibration-proof member 78. The motor housing 66 includes a protrusion 80c that protrudes toward the grip housing 10. The grip housing 10 includes a receiving portion 60 that receives the protrusion 80c. As shown in Figures 4 and 5, the third vibration-proof member 78 is sandwiched between the protrusion 80c and the receiving portion 60. In this configuration, the grip housing 10 and the motor housing 66 are connected via the third vibration-proof member 78. This makes it possible to suppress changes in the position of the motor housing 66 relative to the grip housing 10.

The first vibration-proofing member 74 is made of an elastic material. In this configuration, the elastic deformation of the first vibration-proofing member 74 can suppress the transmission of vibrations of the motor housing 66 caused by the rotation of the electric motor 106 to the ejection nozzle 70.

As shown in FIG. 1, the blower 2 further includes a power cord 12 that supplies power from an external power source to the electric motor 106. In this configuration, the blower 2 can be made lighter than if the blower 2 includes a battery.

Second Example
The second embodiment will be described with reference to FIG. 6. In the second embodiment, only the points different from the first embodiment will be described, and the points similar to those in the first embodiment will be denoted by the same reference numerals and will not be described. The second embodiment is different from the first embodiment in that the blower 2 includes a battery pack B instead of the power cord 12. The battery pack B includes lithium ion battery cells. The power of the battery pack B is supplied to the electric motor 106. The battery pack B is detachably attached to the rear surface of the third housing 30. The battery pack B is attached to the third housing 30 by sliding the battery pack B to the right relative to the third housing 30, and is removed from the third housing 30 by sliding the battery pack B to the left relative to the third housing 30. In a modified example, the battery pack B may be attached to the third housing 30 by sliding the battery pack B downward relative to the third housing 30, and the battery pack B may be removed from the third housing 30 by sliding the battery pack B upward relative to the third housing 30. Furthermore, the battery pack B may be detachably attached to the first housing 26 or the second housing 28. In a modified example, the blower 2 may have a built-in battery that is not detachable.

The blower 2 of this embodiment further includes a battery pack B that supplies power to the electric motor 106. The battery pack B functions as a battery. In this configuration, the blower 2 can be used even if an external power source is not located near the work area.

The blower 2 according to one embodiment may not include the third vibration isolation member 78. In this case, the motor housing 66 is not connected to the grip housing 10.

2: Blower 10: Grip housing 12: Power cord 14: Trigger 16: Cruise control lever 18: Control unit 60: Receiving portion 60a: Base portion 60b: First rib portion 60c: Second rib portion 60d: Space 62: Opening 66: Motor housing 68: Rear housing 68a, 86b: Wall portion 70: Jet nozzle 72, 100: Cover member 74: First vibration-proof member 76: Second vibration-proof member 78: Third vibration-proof member 78a: Bottom portion 78a
78b: Middle part 78b
78c: Head 79: Through hole 80: Outer tubular member 80a: Front wall portion 80b: Rear wall portion 80c: Projection 82: Air passage 84: Upstream passage 86: First ejection nozzle 88: Second ejection nozzle 90: Downstream passage 96: Fin 98: Inner tubular member 106: Electric motor 108: Fan B: Battery pack

Claims (6)

An electric motor;
A fan driven by the electric motor;
a motor housing in which the electric motor is disposed and which has an air passage through which air flows as the fan rotates;
a jet nozzle communicating with a downstream end of the air passage in relation to a flow direction of the air and having a downstream passage through which the air flows;
a rear housing having an upstream passage through which air flows, the upstream passage communicating with an upstream end of the air passage in relation to a flow direction of the air;
a first vibration isolating member sandwiched between the motor housing and the ejection nozzle;
a second vibration isolation member sandwiched between the motor housing and the rear housing;
a support housing in which the rear housing and the ejection nozzle are supported,
The motor housing is not directly connected to the support housing. The support housing further includes a grip housing to which the rear housing and the ejection nozzle are fixed,
2. The blower of claim 1, wherein the motor housing is not directly connected to the grip housing. Further comprising a third vibration isolating member,
The motor housing includes a protrusion that protrudes toward the grip housing,
The grip housing includes a receiving portion for receiving the protrusion,
The blower according to claim 2 , wherein the third vibration isolating member is sandwiched between the protrusion and the receiving portion. The blower according to any one of claims 1 to 3, wherein the first vibration-proof member is made of an elastic material. The blower according to any one of claims 1 to 4, further comprising a power cord for supplying power to the electric motor from an external power source. The blower of any one of claims 1 to 4, further comprising a battery that supplies power to the electric motor.