WO2021029012A1

WO2021029012A1 - Handheld work machine

Info

Publication number: WO2021029012A1
Application number: PCT/JP2019/031846
Authority: WO
Inventors: 茅原　則明; 貴之佐野
Original assignee: 株式会社ニッカリ
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2021-02-18

Abstract

This handheld work machine (10) comprises: a main pipe (5) which extends in a first direction (DR1); a sub-frame (6) which extends in the first direction and is positioned spaced apart from the main pipe in a second direction (DR2) orthogonal to the first direction; and an anti-vibration part (7) which has an elastic member (73). The main pipe is suspended from the sub-frame with the elastic member therebetween. The elastic member is configured to undergo bending deformation as a result of relative movement of the main pipe relative to the sub-frame in the first direction and the second direction.

Description

Handheld work machine

The present invention relates to a handheld working machine.

Non-Patent Document 1 describes a brush cutter, which is a kind of handheld working machine. The brush cutter described in Non-Patent Document 1 has an engine, a drive shaft, a gearbox, a cutting blade, a main pipe, a frame, and an operation handle.

The engine rotates the drive shaft. The rotation of the drive shaft is transmitted to the gearbox. The rotation of the drive shaft transmitted to the gearbox is decelerated in the gearbox and output in a different direction from the output shaft of the gearbox. The cutting blade is rotationally driven by being fixed to the output shaft of the gearbox. The drive shaft is located inside the main pipe.

Inside the frame, there is a through hole through which the main pipe is inserted. One end of the frame is attached to the engine and the main pipe projects from the other end of the frame. An operation handle is attached to the frame.

The vibration during driving of the brush cutter of Non-Patent Document 1 is transmitted to the user through the frame and the operation handle, but the propagation of the vibration is attenuated by the deformation of the rubber member embedded inside the frame. There is.

In the brush cutter described in Non-Patent Document 1, when vibration occurs along the extending direction of the main pipe, the rubber member embedded inside the frame is compressed and deformed to attenuate the vibration. become. However, since the amount of deformation of the rubber member due to compression is small, the brush cutter described in Non-Patent Document 1 has room for improvement in the vibration damping ability against vibration along the extending direction of the main pipe.

The present invention has been made in view of the above-mentioned problems of the prior art. More specifically, the present invention provides a handheld working machine with improved vibration damping capability.

The handheld working machine according to one aspect of the present invention has a main pipe extending along the first direction and a second pipe extending along the first direction and orthogonal to the first direction. It includes a subframe arranged apart from the main pipe in the direction, and a vibration isolator having an elastic member. The subframe suspends the main pipe via an elastic member. The elastic member is configured to bend and deform due to the relative movement of the main pipe along the first and second directions with respect to the subframe.

In the above handheld working machine, the elastic member may be a rubber member. The rubber member may be arranged so as to be along a third direction in which the longitudinal direction of the rubber member is orthogonal to the first direction and the second direction.

In the above-mentioned handheld working machine, the rubber member may have a first shaft portion and a second shaft portion and a third shaft portion that sandwich the first shaft portion along the third direction. The cross-sectional area of the second shaft portion and the third shaft portion in the cross section orthogonal to the third direction may be smaller than the cross-sectional area of the first shaft portion in the cross section orthogonal to the third direction.

In the above handheld work machine, the vibration isolator includes a first portion attached to the subframe, a second portion attached to the main pipe and suspended from the first portion by an elastic member, and the like. It may further have a drop-out prevention member that prevents the second portion from falling off from the first portion when the elastic member is torn.

In the above handheld working machine, the elastic member may be a coil spring. The coil spring may be arranged so as to be along a third direction in which the axial direction of the coil spring is orthogonal to the first direction and the second direction.

In the above handheld working machine, the elastic member may be located between the main pipe and the subframe in the second direction.

In the above handheld working machine, the subframe may be configured so that the position with respect to the main pipe in the first direction can be changed.

The above handheld work machine may further include a handle attached to the subframe. The handle may be configured to be repositionable with respect to the subframe in the first direction.

According to the handheld working machine according to one aspect of the present invention, the vibration damping ability can be improved.

It is a side view of the brush cutter 10. It is a perspective view of the brush cutter 10. It is an enlarged view in the region III of FIG. It is sectional drawing in IV-IV of FIG. It is sectional drawing in VV of FIG. It is a side view of the vibration isolation part 7 which omitted the display of the 1st part 71. It is sectional drawing of the vibration isolation part 7 of the brush cutter 10A in the cross-sectional view orthogonal to the 1st direction DR1. It is sectional drawing of the vibration isolation part 7 of the brush cutter 10B in the cross-sectional view orthogonal to the 1st direction DR1.

The details of the embodiment will be described with reference to the drawings. In the following drawings, the same or corresponding parts are designated by the same reference numerals, and duplicate explanations will not be repeated.

(First Embodiment)
The brush cutter (hereinafter referred to as "brush cutter 10") according to the first embodiment will be described below.

<Outline configuration of brush cutter 10>
FIG. 1 is a side view of the brush cutter 10. FIG. 2 is a perspective view of the brush cutter 10. As shown in FIGS. 1 and 2, the brush cutter 10 includes an engine 1, a drive shaft 2 (not shown in FIGS. 1 and 2, see FIGS. 4 and 5), a centrifugal clutch 3, and a gearbox. It has 4, a main pipe 5, a subframe 6, a vibration isolator 7, a handle 8, and a cutting blade 9.

Engine 1 is, for example, a gasoline engine. The drive shaft 2 is attached to the engine 1 via a centrifugal clutch 3. When the rotation speed of the engine 1 is less than a predetermined threshold value, the centrifugal clutch 3 is in the closed state. That is, when the rotation speed of the engine 1 is less than a predetermined threshold value, the power of the engine 1 is not transmitted to the drive shaft 2, and the drive shaft 2 is not rotationally driven. On the other hand, when the rotation speed of the engine 1 is equal to or higher than a predetermined threshold value, the centrifugal clutch 3 is opened by the centrifugal force accompanying the rotation of the engine 1, and the power of the engine 1 is transmitted to the drive shaft 2 ( The drive shaft 2 will rotate around its central axis).

The gearbox 4 slows down the rotation of the drive shaft 2 and transmits it to the output shaft of the gearbox 4. The rotation direction of the output shaft of the gearbox 4 is different from the rotation direction of the drive shaft 2. That is, the gearbox 4 also plays a role of changing the rotation direction of the drive shaft 2. The gearbox 4 is configured by, for example, combining bevel gears.

The main pipe 5 is a pipe-shaped (cylindrical) member. That is, the inside of the main pipe 5 is hollow. The main pipe 5 extends along the first direction DR1. The drive shaft 2 is housed inside the main pipe 5. That is, the main pipe 5 is a pipe-shaped member in which the drive shaft 2 rotationally driven by the engine 1 is housed. As long as the main pipe 5 extends along the first direction, the drive shaft 2 also extends along the first direction DR1. Although not shown, the drive shaft 2 is rotatably supported by bearings inside the main pipe 5.

The subframe 6 is a rod-shaped member extending along the first direction DR1. The subframe 6 is arranged so as to be separated from the main pipe 5 in the second direction DR2. The second direction DR2 is a direction orthogonal to the first direction DR1. The position of the subframe 6 relative to the main pipe 5 in the first direction DR1 can be changed.

The vibration isolator 7 has a structure for suppressing the vibration generated in the brush cutter 10 from being transmitted to the subframe 6 and suspending the main pipe 5 from the subframe 6. The number of anti-vibration portions 7 is, for example, 2, and they are located at both ends of the subframe 6 in the first direction DR1. The detailed configuration of the vibration isolator 7 will be described later.

The handle 8 is a part for the user to hold the brush cutter 10. The handle 8 has a grip portion 8a and a grip portion 8b, and the user holds the brush cutter 10 by grasping the grip portion 8a and the grip portion 8b. The handle 8 is attached to the subframe 6 by, for example, a fixing bracket 8c. By loosening the fixing bracket 8c, the position of the handle 8 with respect to the subframe 6 in the first direction DR1 can be changed.

The cutting blade 9 is attached to the output shaft of the gearbox 4. The cutting blade 9 is attached to the output shaft of the gearbox 4 by using, for example, a cutting blade mounting bracket. Therefore, by driving the engine 1, the cutting blade 9 is rotationally driven. A shatterproof member 9a is attached in the vicinity of the cutting blade 9. As a result, the object in contact with the rotating cutting blade 9 is suppressed from scattering toward the user.

<Detailed configuration of vibration isolation unit 7>
FIG. 3 is an enlarged view of region III of FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. FIG. 5 is a cross-sectional view taken along the line VV of FIG. As shown in FIGS. 3 to 5, the vibration isolator 7 has a first portion 71, a second portion 72, an elastic member 73, and a fall-out prevention member 74.

The first portion 71 has a first member 71a, a second member 71b, a third member 71c, and a fourth member 71d.

The first member 71a has a first side wall portion 71aa, a second side wall portion 71ab, and an upper wall portion 71ac. The first side wall portion 71aa and the second side wall portion 71ab face each other in the third direction DR3. The third direction DR3 is a direction orthogonal to both the first direction DR1 and the second direction DR2. The upper wall portion 71ac connects the upper end of the first side wall portion 71aa and the upper end of the second side wall portion 71ab. That is, the first member 71a has a U-shape when viewed from the first direction DR1.

The second member 71b is fixed to the surface of the first side wall portion 71aa on the side facing the second side wall portion 71ab. The third member 71c is fixed to the surface of the second side wall portion 71ab on the side facing the first side wall portion 71aa. The second member 71b and the third member 71c are arranged to face each other in the third direction DR3.

The fourth member 71d is fixed to the upper wall portion 71ac. The insertion hole 71da is defined by the fourth member 71d and the first member 71a (upper wall portion 71ac). The end of the subframe 6 is inserted into the insertion hole 71da. As a result, the first portion 71 is attached to the subframe 6.

The second portion 72 has a first member 72a, a second member 72b, and a third member 72c. A first insertion hole 72d and a second insertion hole 72e are formed in the second portion 72.

The first member 72a has a first surface 72aa and a second surface 72ab. The first surface 72aa is a surface facing the subframe 6 side. The second surface 72ab is the opposite surface of the first surface 72aa in the second direction DR2. That is, the second surface 72ab is a surface facing the main pipe 5 side.

A groove 72ac is formed on the first surface 72aa. The first surface 72aa is recessed on the second surface 72ab side in the groove 72ac. The groove 72ac extends along the third direction DR3. A convex portion 72ad is formed on the first surface 72aa located in the groove 72ac. The convex portion 72ad protrudes from the first surface 72aa in the groove 72aa along the second direction DR2. A groove 72ae is formed on the second surface 72ab. The second surface 72ab is recessed on the first surface 72aa side in the groove 72ae. The groove 72ae extends along the first direction DR1.

The first member 72a further has a first side surface 72af and a second side surface 72ag (see FIG. 6). The first side surface 72af is the side surface of the first member 72a facing the first side wall portion 71aa side, and the second side surface 72ag is the side surface of the first member 72a facing the second side wall portion 71ab side. A groove 72ah is formed on the first side surface 72af, and a groove 72ai is formed on the second side surface 72ag. The groove 72ah and the groove 72ai extend from the first surface 72aa toward the second surface 72ab side.

The second member 72b has a curved portion 72ba, a first flat portion 72bb, and a second flat portion 72bc. The first flat portion 72bb is connected to one end of the curved portion 72ba in the first direction DR1, and the second flat portion 72bb is connected to the other end of the curved portion 72ba in the first direction DR1. The second member 72b is fixed to the first surface 72aa at the first flat portion 72bb and the second flat portion 72bc. The first insertion hole 72d is defined by the curved portion 72ba and the groove 72ac. The first insertion hole 72d extends along the third direction DR3. The upper end of the groove 72ah and the upper end of the groove 72ai are closed by the second member 72b.

The third member 72c has a curved portion 72ca, a first flat portion 72cc, and a second flat portion 72cc. The first flat portion 72cc is connected to one end of the curved portion 72ca in the third direction DR3, and the second flat portion 72cc is connected to the other end of the curved portion 72ca in the third direction DR3. The third member 72c is fixed to the second surface 72ab at the first flat portion 72cc and the second flat portion 72cc. The second insertion hole 72e is defined by the curved portion 72ca and the groove 72ae. The second insertion hole 72e extends along the first direction DR1.

The main pipe 5 is inserted into the second insertion hole 72e. The main pipe 5 cannot slide with respect to the second insertion hole 72e when the third member 72c is fixed to the second surface 72ab, but loosens the fixing of the third member 72c to the second surface 72ab. This makes it slidable with respect to the second insertion hole 72e. As a result, the position of the subframe 6 with respect to the main pipe 5 in the first direction DR1 can be changed.

The elastic member 73 is a rubber member in the brush cutter 10. The rubber member is a member formed of a rubber material. The elastic member 73 is inserted into the first insertion hole 72d. The longitudinal direction of the elastic member 73 is along the third direction DR3. Both ends of the elastic member 73 in the longitudinal direction are fixed to the second member 71b and the third member 71c by adhesion or the like, respectively. As a result, the second portion 72 is suspended from the first portion 71.

The elastic member 73 is located between the main pipe 5 and the subframe 6 in the second direction DR2. In a state where the second member 72b is fixed to the first surface 72aa, the elastic member 73 cannot slide with respect to the first insertion hole 72d.

The elastic member 73 has a first shaft portion 73a, a second shaft portion 73b, and a third shaft portion 73c along the longitudinal direction thereof (along the third direction DR3). The first shaft portion 73a is sandwiched between the second shaft portion 73b and the third shaft portion 73c in the third direction DR3. A groove 73aa is formed on the outer peripheral surface of the first shaft portion 73a. A convex portion 72ad is inserted into the groove 73aa.

The cross-sectional area of the second shaft portion 73b and the third shaft portion 73c in the cross section orthogonal to the third direction DR3 is preferably smaller than the cross-sectional area of the first shaft portion 73a in the cross section orthogonal to the third direction DR3. .. It is preferable that the outer peripheral surface of the first shaft portion 73a is smoothly connected to the outer peripheral surface of the second shaft portion 73b and the outer peripheral surface of the third shaft portion 73c.

FIG. 6 is a side view of the vibration isolator portion 7 in which the display of the first portion 71 is omitted. As shown in FIG. 6, the dropout prevention member 74 is inserted into a through hole formed in the first side wall portion 71aa so that the tip reaches the groove 72ah. The other dropout prevention member 74 is inserted into a through hole formed in the second side wall portion 71ab so that the tip reaches the groove 72ai. In FIG. 6, the tip of the dropout prevention member 74 is indicated by a dotted line. As a result, even if the elastic member 73 is torn, the second portion 72 is suspended from the first portion 71 by the dropout prevention member 74.

<Effect of brush cutter 10>
When using a brush cutter, various vibrations occur due to the explosion of fuel in the engine, the processing accuracy and mounting accuracy of each component, and so on. As a preventive measure against vibration damage to brush cutter users, there are regulations on the amount of daily vibration exposure of users.

In the mowing machine 10, the main pipe 5 is suspended from the subframe 6 via the elastic member 73, and the longitudinal direction of the elastic member 73 (rubber member) is the third direction DR3 (extending direction of the main pipe 5). ), So when a vibration occurs that causes the main pipe 5 to move along the first direction DR1, the vibration bends and deforms the elastic member 73. The rubber member is more easily deformed when it is subjected to bending deformation than when it is subjected to compression deformation, and the larger the amount of deformation, the greater the damping effect of vibration. Therefore, according to the brush cutter 10, the vibration damping effect against vibration such that the main pipe 5 moves along the first direction DR1 is improved.

Further, since the longitudinal direction of the elastic member 73 is along the third direction DR3, the vibration such that the main pipe 5 moves along the second direction DR2 also bends and deforms the elastic member 73. Therefore, according to the brush cutter 10, the vibration damping effect against vibration such that the main pipe 5 moves along the second direction DR2 is also improved.

When the elastic member 73 is located between the main pipe 5 and the subframe 6 in the second direction DR2, the elastic member 73 is bent and deformed by vibration such that the main pipe 5 moves along the third direction DR3. It will be easier to do. Therefore, in this case, the vibration damping effect on the vibration such that the main pipe 5 moves along the second direction DR2 is also improved.

When the cross-sectional area of the second shaft portion 73b and the third shaft portion 73c in the cross section orthogonal to the third direction DR3 is smaller than the cross-sectional area of the first shaft portion 73a in the cross section orthogonal to the third direction DR3, the elastic member Since the bending rigidity is lowered at a position close to the fixed end portion of the 73, the bending deformation of the elastic member 73 is more likely to occur. Therefore, in this case, the vibration damping effect of the elastic member 73 is further improved.

When the outer peripheral surface of the first shaft portion 73a is smoothly connected to the outer peripheral surface of the second shaft portion 73b and the outer peripheral surface of the third shaft portion 73c, when the elastic member 73 is bent and deformed, the elastic member 73 Since stress concentration on the outer peripheral surface is less likely to occur, tearing of the elastic member 73 can be suppressed.

According to the findings found by the present inventors, the vibration of the main pipe 5 varies depending on the position in the first direction DR1. Therefore, when the position of the subframe 6 with respect to the main pipe 5 in the first direction DR1 can be changed, the vibration transmitted to the user can be further reduced. When the position of the handle 8 with respect to the subframe 6 in the first direction DR1 can be changed, the mounting position of the handle 8 can be changed according to the physique of the user.

(Second Embodiment)
The brush cutter according to the second embodiment (hereinafter referred to as "brush cutter 10A") will be described below. Here, the differences from the brush cutter 10 will be mainly described, and the overlapping description will not be repeated.

The brush cutter 10A includes an engine 1, a drive shaft 2, a centrifugal clutch 3, a gearbox 4, a main pipe 5, a subframe 6, a vibration isolator 7, a handle 8, and a cutting blade 9. doing. In these respects, the configuration of the brush cutter 10A is common to the configuration of the brush cutter 10.

FIG. 7 is a cross-sectional view of the vibration isolator 7 of the brush cutter 10A in a cross-sectional view orthogonal to the first direction DR1. As shown in FIG. 7, the vibration isolator 7 has a first portion 71, a second portion 72, and an elastic member 73. With respect to these points, the configuration of the vibration isolator 7 of the brush cutter 10A is common to the configuration of the vibration isolation unit 7 of the brush cutter 10.

However, the vibration isolator 7 of the brush cutter 10A is different from the vibration isolator 7 of the brush cutter 10 with respect to the detailed configuration of the first portion 71, the detailed configuration of the second portion 72, and the detailed configuration of the elastic member 73.

The first part 71 has a first member 71a and a fourth member 71d, but does not have a second member 71b and a third member 71c. A groove 72ah and a groove 72ai are not formed in the second portion 72 (first member 72a).

The elastic member 73 is a coil spring. The coil spring is arranged so that its axial direction is along the third direction DR3. Both ends of the coil spring are fixed to the first side wall portion 71aa and the second side wall portion 71ab by screws or the like, respectively. The second portion 72 is suspended from the first portion 71 by an elastic member 73 (coil spring).

In the brush cutter 10A, the elastic member 73 (coil spring) is bent and deformed by the relative movement of the main pipe 5 with respect to the subframe 6 along the first direction DR1 and the second direction DR2, so that the brush cutter 10A is the same as the brush cutter 10. In addition, the vibration damping capacity can be improved.

(Third Embodiment)
The brush cutter according to the third embodiment (hereinafter referred to as "brush cutter 10B") will be described below. Here, the differences from the brush cutter 10 will be mainly described, and the overlapping description will not be repeated.

The brush cutter 10B includes an engine 1, a drive shaft 2, a centrifugal clutch 3, a gearbox 4, a main pipe 5, a subframe 6, a vibration isolator 7, a handle 8, and a cutting blade 9. doing. In these respects, the configuration of the brush cutter 10B is common to the configuration of the brush cutter 10.

FIG. 8 is a cross-sectional view of the vibration isolator 7 of the brush cutter 10B in a cross-sectional view orthogonal to the first direction DR1. As shown in FIG. 8, the anti-vibration portion 7 has a first portion 71, a second portion 72, an elastic member 73, and a fall-out prevention member 74. With respect to these points, the configuration of the vibration isolator 7 of the brush cutter 10B is common to the configuration of the vibration isolation unit 7 of the brush cutter 10.

However, regarding the detailed configuration of the second portion 72 and the detailed configuration of the elastic member 73, the vibration isolator 7 of the brush cutter 10B is different from the vibration isolator 7 of the brush cutter 10.

The second portion 72 has a fourth member 72f and a fifth member 72g in addition to the first member 72a, the second member 72b, and the third member 72c. The fourth member 72f and the fifth member 72g extend along the second direction DR2, respectively, and are sandwiched between the first member 72a and the second member 72b. The convex portion 72ad is not formed on the first member 72a.

The number of elastic members 73 is two (the two elastic members 73 are referred to as elastic members 73d and elastic members 73e, respectively). The elastic member 73d and the elastic member 73e are rubber members. The longitudinal direction of the elastic member 73d and the longitudinal direction of the elastic member 73e are along the third direction DR3. One end of the elastic member 73d is fixed to the second member 71b, and the other end of the elastic member 73d is fixed to the fifth member 72g. One end of the elastic member 73e is fixed to the third member 71c, and the other end of the elastic member 73e is fixed to the fourth member 72f. As a result, the second portion 72 is suspended from the first portion 71 by the elastic member 73d and the elastic member 73e.

In the brush cutter 10B, the elastic member 73d and the elastic member 73e, which are rubber members, are bent and deformed due to the relative movement of the main pipe 5 with respect to the subframe 6 along the first direction DR1 and the second direction DR2. Similar to the brush cutter 10, the vibration damping ability can be improved.

(Other embodiments)
The above contents can be applied not only to brush cutters but also to handheld work machines other than brush cutters (for example, handheld work machines that can be used as brush cutters, hedge trimmers, pole saws, etc. by exchanging attachments). ..

Although the embodiment of the present invention has been described as described above, it is also possible to modify the above-described embodiment in various ways. Moreover, the scope of the present invention is not limited to the above-described embodiment. The scope of the present invention is indicated by the claims and is intended to include all modifications within the meaning and scope equivalent to the claims.

The above embodiment is particularly advantageous for brush cutters.

10, 10A, 10B brush cutter, 1 engine, 2 drive shaft, 3 centrifugal clutch, 4 gearbox, 5 main pipe, 6 subframe, 7 anti-vibration part, 71 1st part, 71a 1st member, 71aa 1st side wall Part, 71ab 2nd side wall, 71b 2nd member, 71c 3rd member, 71d 4th member, 71da insertion hole, 72 2nd part, 72a 1st member, 72aa 1st surface, 72ab 2nd surface, 72ac groove, 72ad convex part, 72ae groove, 72af first side surface, 72ag second side surface, 72ah, 72ai groove, 72b second member, 72ba curved part, 72bb first flat part, 72bc second flat part, 72c third member, 72ca curved Part, 72cc first flat part, 72cc second flat part, 72d first insertion hole, 72e second insertion hole, 72f fourth member, 72g fifth member, 73, 73d, 73e elastic member, 73a first shaft part, 73aa groove, 73b 2nd shaft part, 73c 3rd shaft part, 74 dropout prevention member, 8 handle, 8a, 8b grip part, 8c fixing bracket, 9 cutting blade, 9a shatterproof member, DR1 1st direction, DR2 2nd Direction, DR3 3rd direction.

Claims

The main pipe extending along the first direction,
A subframe extending along the first direction and arranged apart from the main pipe in the second direction orthogonal to the first direction.
With a vibration-proof part having an elastic member,
The subframe suspends the main pipe via the elastic member.
A handheld working machine in which the elastic member is bent and deformed by the relative movement of the main pipe with respect to the subframe along the first direction and the second direction.
The elastic member is a rubber member and
The handheld working machine according to claim 1, wherein the rubber member is arranged so as to be arranged along a third direction in which the longitudinal direction of the rubber member is orthogonal to the first direction and the second direction.
The rubber member has a first shaft portion and a second shaft portion and a third shaft portion that sandwich the first shaft portion along the third direction.
The cross-sectional area of the second shaft portion and the third shaft portion in the cross section orthogonal to the third direction is smaller than the cross-sectional area of the first shaft portion in the cross section orthogonal to the third direction. The handheld working machine according to claim 2.
The anti-vibration portion includes a first portion attached to the subframe, a second portion attached to the main pipe and suspended from the first portion by the elastic member, and the elasticity. The handheld working machine according to claim 2 or 3, further comprising a drop-out prevention member that prevents the second portion from falling off from the first portion when the member is torn.
The elastic member is a coil spring.
The handheld working machine according to claim 1, wherein the coil spring is arranged so that the axial direction of the coil spring is arranged along a third direction orthogonal to the first direction and the second direction.
The handheld working machine according to any one of claims 1 to 4, wherein the elastic member is located between the main pipe and the subframe in the second direction.
The handheld working machine according to any one of claims 1 to 6, wherein the subframe is configured so that the position with respect to the main pipe in the first direction can be changed.
Further equipped with a handle attached to the subframe
The handheld working machine according to any one of claims 1 to 7, wherein the handle is configured so that the position with respect to the subframe in the first direction can be changed.