JP2535348Y2 - Handle mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a handle mounting structure equipped with a throttle lever and the like which is mounted on a jet pipe of a backpack power spreader or an operating rod of a brush cutter, and more particularly, adjusts a mounting angle of a handle. It relates to a possible mounting structure.

[0002]

2. Description of the Related Art In a spraying operation using a backpack power spreader, an operator carries a body of the backpack power spreader on his / her back, grips a jet tube, and operates a throttle lever at a tip end of a handle attached to the jet tube. Is manually operated to adjust the engine output.

[0003] It is desired from the viewpoint of work efficiency that the attachment angle of the handle with respect to the injection tube can be adjusted according to the preference of the operator.

[0004] In a conventional handle mounting structure in which the mounting angle of the handle is adjustable, a mounting tool is fitted on the injection tube and sandwiches the base of the handle from both sides.
A pair of opposed portions is provided, and the opposed portion is fastened from both sides by a fastening member, and the base of the handle is fixed by the opposed portion. Then, when adjusting the mounting angle of the handle with respect to the injection pipe, the operator loosens (a) the tightening member and (b)
The opposite part of the pair is expanded by hand to allow the handle to rotate,
(C) rotating the handle to a desired mounting angle, and (d)
The mounting angle of the handle is fixed by retightening with the tightening member.

Further, in the conventional handle mounting structure, in order to enable a common mounting tool to be used for injection tubes having different diameters, a space between an inner peripheral side of a fitting portion of the mounting tool and an outer circumference of the injection pipe is required. An annular rubber is interposed between them and replaced with an annular rubber having a different thickness.

[0006]

The work of adjusting the mounting angle of the handle by the conventional handle mounting structure takes time and effort. In addition, in order to cope with various diameters of the injection pipe, it is necessary to prepare and replace annular rubbers having various thicknesses.
It is disadvantageous for storage and production.

An object of the present invention is to provide a handle mounting structure which can easily and quickly adjust a mounting angle of a handle. It is an object of the invention of claim 2 to provide a handle mounting structure that allows a common mounting tool to be used by omitting an annular rubber even for tubular mounted bodies having different diameters.

[0008]

The present invention will be described with reference to the drawings corresponding to the embodiments. According to the handle mounting structure of the first aspect, the mounting tool (38) fitted to the tubular mounted body (48) faces each other with the base (12) of the handle (10) interposed therebetween. And a second facing portion (51). The second facing part (51) is the base of the handle (10).
It has a rotation restricting portion (56) pressed toward (12) to restrict the rotation of the base (12). The rotation operation member (60) can adjust the distance of the second facing portion (51) from the first facing portion (50) by rotation.

According to the handle mounting structure of the second aspect, the mounting tool (38) includes the first mounting portion (40) and the second mounting portion (42).
A first mounting part (40) and a second mounting part (42).
Have a first facing portion (50) and a second facing portion (51), respectively, and are applied to the tubular mounted body (48) from both sides. The first mounting portion (40) and the second mounting portion (42) have engaging portions (78, 80) which are engaged with each other in the circumferential direction of the tubular mounted body (48) so as to be overlapped and relatively displaceable. doing.

[0010]

According to the handle mounting structure of the first aspect, when the rotary operation member (60) is rotated, the first opposing portion (50) and the second
The facing portion (51) increases or decreases the distance in the facing direction. handle
When changing the mounting angle of (10), the facing distance between the first facing portion (50) and the second facing portion (51) is increased. As a result, the rotation restricting portion (56) of the second facing portion (51) is
The handle (10) is separated from the base (12) and the rotation constraint of the base (12) of the handle (10) is released. The operator changes the mounting angle of the handle (10) to a desired value, and then rotates the rotary operation member (60) again. As a result, the facing distance between the first facing portion (50) and the second facing portion (51) is reduced, and the rotation restricting portion (56) of the second facing portion (51) is again moved to the handle (10). ), The rotation of the base (12) is restrained, and the mounting angle of the handle (10) is fixed.

In the handle mounting structure according to the second aspect, the first mounting portion (40) is adapted to cope with a change in the diameter of the tubular mounted body (48).
The second mounting portion (42) changes the overlapping amount of the engagement portions (78, 80) in the circumferential direction of the tubular mounted body (48). When the overlapping amount of the engagement portions (78, 80) decreases, the first mounting portion
The (40) and the second mounting portion (42) swell in the radial direction of the tubular mounted body (48), and are adapted to fit on the large-diameter tubular mounted body (48). On the other hand, when the overlapping amount of the engagement portions (78, 80) increases, the first mounting portion (40) and the second mounting portion (42) shrink in the radial direction of the tubular mounted body (48), It is suitable for fitting to a small tubular mounted body (48). The first mounting portion (40) and the second mounting portion (42) are connected to the tubular mounted body (48) as the distance between the first facing portion (50) and the second facing portion (51) decreases. And is fixed.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 6 is a side view of the handle 10 having a cross section at the tip. This handle 10 is mounted on a backpack power spreader.
The handle 10 bends and extends at an intermediate portion, and has a boss 12 on the base side. The cylindrical hole 14 is formed at the center of the boss 12 and penetrates the boss 12. Female side meshing contour 16
Are formed in the inner peripheral portion on one side of the boss 12 and have a cylindrical hole 14.
Orbiting around. Throttle lever 18 is a handle
It is rotatably connected to the tip of the device 10 around the fulcrum 20. The throttle wire 22 includes an inner wire 24 and an inner wire 24.
And an outer tube 26 covering the outer tube.
The end of 26 comes into contact with an outer stopper 28 of the handle 10 to limit the displacement toward the throttle lever 18. The inner wire 24 is exposed at both ends from the throttle wire 22. One exposed end (not shown) of the throttle wire 22 is connected to a throttle valve of a carburetor of the backpack power spreader, and the other exposed end is connected to a throttle lever. It is fixed to a circular locking body 30 rotatably fitted into the 18 circular holes. With the swing operation of the throttle lever 18 around the fulcrum 20, the inner wire 24 of the throttle wire 22 is displaced,
The throttle opening of the carburetor increases or decreases.
The speed control lever 32 is located above the throttle lever 18.
A handle is provided so as to be rotatable around a fulcrum 34 by a predetermined operation force and to maintain the rotational position when the operation force is released.
The cam unit 36 is attached to the throttle lever 18 so as to contact the throttle lever 18. The throttle lever 18 is urged via the inner wire 24 in the swing direction in which the throttle opening of the carburetor decreases, and the cam portion 36 of the speed control lever 32 moves in the direction in which the throttle opening decreases. Swing is limited by contact with the throttle lever 18.

FIG. 1 is a cross-sectional view of the handle mounting structure. The attachment 38 has a first attachment part 40 and a second attachment part 42 on the left and right. The first mounting portion 40 and the second mounting portion 42 are arc-shaped portions 44, 46 which are applied to the outer peripheral side of the injection tube 48 of the backpack power spreader from the left and right, and project upward from the arc-shaped portions 44, 46. It has facing portions 50 and 51 facing left and right with the boss 12 of the handle 10 interposed therebetween. In the facing portion 50, the cylindrical portion 52 is inserted into the cylindrical hole 14 of the boss 12 from the left end portion, and rotatably supports the boss 12.

FIG. 2 is a perspective view of the area of the facing portion 51 of the second mounting portion 42. 1 and 2, the protruding boss portion 54 of the facing portion 51 is inserted into the cylindrical hole 14 of the boss 12 from the right end, and rotatably supports the boss 12. Male side meshing contour
56 is formed on the outer peripheral side of the base of the protruding boss portion 54, and the boss 12
The female side mating contour 16
It is designed to restrain 12 rotations. A pair of slopes 58
Is formed on the end surface of the projecting boss 54 so as to make a half circumference in the circumferential direction of the projecting boss 54.

FIG. 3 is a perspective view of the knob 60. 1 and 3, the flange portion 62 covers the outer surface side of the facing portion 50,
The cylindrical fitting portion 64 is rotatably fitted to the inner peripheral side of the cylindrical portion 52. The snap ring 66 fits into the annular groove on the inner peripheral side of the cylindrical portion 52 and the outer peripheral side of the fitting portion 64, and relatively rotates the cylindrical portion 52 and the fitting portion 64 while preventing relative movement in the axial direction. And The pair of slopes 68 are formed on the distal end surface of the fitting portion 64 so as to make a half circumference in the circumferential direction of the fitting portion 64, and come into contact with the slope 58 of the projecting boss portion 54 of the second mounting portion 42.

In FIG. 1, a screw 70 is inserted through a shaft 71 into a washer 72, and from the outer surface of the facing portion 50 into a fitting portion 64 of the knob 60 and a projecting boss 54 of the second mounting portion 42. You.

FIG. 4 is a view of the facing portion 51 of the second mounting portion 42 as viewed from the outside. 1 and 4, a spring seat 74 is provided.
Is fixed to the front end of the shaft portion 71 by screwing, and is fitted into the hole of the facing portion 51 having the same contour as the spring seat 74 from the outer surface side of the facing portion 51. By such insertion, the screw 70 and the spring seat 74 are
During rotation of the knob 60, relative rotation with respect to the facing portion 51 is prevented. The compression coil spring 76 is contracted between the stepped portion of the projecting boss portion 54 and the inner surface side of the spring seat 74 while being fitted to the tip portion of the shaft portion 71 of the screw 70, and the opposing portion 51 is Pressing toward

FIG. 5 is a view as seen in the V5 direction of FIG. The first mounting portion 40 and the second mounting portion 42 have comb-shaped engagement portions 78 and 80 at the lower portion which overlap with each other in the circumferential direction of the injection tube 48 and engage with each other.

The operation of the embodiment will be described. When the operator grips the flange portion 62 of the knob 60 and rotates the knob 60, the inclined surface 68 of the tip end surface of the fitting portion 64 of the knob 60 becomes a projecting boss portion 54 of the facing portion 51 of the second mounting portion 42. Relative rotation while sliding on the inclined surface 58 at the tip end surface of the compression coil spring 76, the relative rotational position of the inclined surfaces 58 and 68 changes.
Away from the confrontation unit 50 against As a result, the projecting boss
The male engagement profile 56 of the handle 54 is disengaged from the engagement of the female engagement profile 16 of the boss 12 of the handle 10, and the rotation constraint of the boss 12 is released. Next, the operator grips the distal end of the handle 10, changes the attachment angle of the handle 10 with respect to the injection tube 48 to a desired value, and then rotates the knob 60 again. Thereby, the facing portion 51 holds the slope 58 in contact with the slope 68 of the knob 60 according to the biasing force of the compression coil spring 76,
The gap between the facing part 50 and the facing part 51 is narrowed, and the male-side meshing contour part 56 of the facing part 51 is a female-side meshing contour part of the boss 12 at another relative rotation position.
Engaging with 16, the handle 10 is fixed at its mounting angle.

In response to the change in the diameter of the injection tube 48, the comb-shaped engagement portions 78, 80 of the first mounting portion 40 and the second mounting portion 42.
Changes the overlapping amount of the jet tube 48 in the circumferential direction. When the overlapping amount of the comb-like meshing portions 78 and 80 decreases, the arc portion 44 of the first mounting portion 40 and the arc portion 46 of the second mounting portion 42 swell in the radial direction of the injection tube 48, and the large-diameter Compatible with fitting to tube 48. On the other hand, when the overlapping amount of the comb-shaped engaging portions 78 and 80 increases, the arc portion 44 of the first mounting portion 40 and the second mounting portion 42
The arc 46 of the nozzle shrinks in the radial direction of the injection tube 48,
Fits 48 fits. The arc portion 44 of the first attachment portion 40 and the arc portion 46 of the second attachment portion 42 decrease the interval as the interval between the facing portions 50 and 51 decreases with the rotation of the knob 60, and the injection pipe 48 And is fixed to the injection tube 48.

FIG. 7 is another side view of the boss 12. A plurality of hemispherical recesses 82 are formed at equal angular intervals on the boss 12 instead of the female-side meshing contour 16 of FIG. On the other hand, a plurality of hemispherical projections (not shown) are formed at the facing portion 51 instead of the male-side meshing contour portion 56 in FIG. The relative rotation is restricted.

FIG. 8 shows a second embodiment in which the projecting boss 54 has another structure.
5 is a perspective view of a range of a facing portion 51 of the mounting portion 42 of FIG. The protruding boss portion 54 has a multi-threaded screw 84 on the periphery instead of the slope 58 in FIG. On the other hand, the fitting portion 64 of the knob 60
A female-side multi-threaded screw (not shown) that is screwed with the multi-threaded screw 84 is formed on the inner peripheral side of the screw. The rotation of the knob 60 changes the screwing position of the multi-threaded screw on the knob 60 side and the multi-threaded screw 84 on the protruding boss part 54 side, and the facing part 51 of the second mounting part 42 is connected to the boss 12 of the handle 10. By pressing or separating, the relative rotation of the boss 12 is restrained and released.

In the illustrated embodiment, the handle mounting structure of the backpack power spreader has been described. However, it is understood by those skilled in the art that the present invention can be applied to the handle mounting structure to the operation stick and other tubular mounted bodies of the brush cutter. Is self-evident.

[0024]

According to the first aspect of the present invention, the first facing portion and the second facing portion of the fitting to be fitted to the tubular mounted body sandwich the base of the handle between the fitting and the rotary operating member. The mutual distance by rotation can be adjusted. And
When fixing the mounting angle of the handle, the distance between the first facing portion and the second facing portion is reduced, and the rotation restricting portion of the second facing portion is pressed against the base of the handle, and the handle to the mounting tool is When the relative rotation of the base is restricted and the mounting angle of the handle is changed, the interval between the first facing portion and the second facing portion is widened, the rotation restraint of the base of the handle is released, and the base of the handle is released. Is allowed to change the mounting angle of the handle. Therefore, in the operation of adjusting the mounting angle of the handle, only the rotation of the rotary operation member and the rotation of the handle to the desired mounting angle are sufficient, and the adjustment operation can be simplified and speeded up.

According to the invention of claim 2, the mounting tool has a first mounting portion and a second mounting portion applied to the tubular mounted body from both sides, and the first mounting portion and the second mounting portion. However, since the fitting portion overlaps and fits in the circumferential direction of the tubular mounted body, the first mounting portion and the second mounting portion are connected to the tubular mounting portion by increasing or decreasing the overlapping amount in the meshing portion. Can expand and contract in the radial direction of the body. This makes it possible to omit the interposition of the annular rubber and use a common mounting tool for the tubular mounted bodies having different diameters.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a handle mounting structure.

FIG. 2 is a perspective view of a range of a facing portion of a second mounting portion.

FIG. 3 is a perspective view of a knob.

FIG. 4 is a view of a facing portion of a second mounting portion viewed from an outer surface side.

FIG. 5 is a view seen in a V5 direction of FIG. 1;

FIG. 6 is a side view of the handle having a tip portion in section.

FIG. 7 is another side view of the boss.

FIG. 8 is a perspective view of a range of a confronting portion of a second mounting portion in which a projecting boss has a different structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Handle 12 Boss (base part) 28 Mounting tool 40 First mounting part 42 Second mounting part 48 Jet tube (tubular mounted body) 50 Confronting part (first confronting part) 51 Confronting part (second confronting part) 56) Male side meshing contour part (rotation restraining part) 60 Knob (rotating operation member) 78, 80 Comb-toothed meshing part (meshing part)

Claims (2)

(57) [Scope of request for utility model registration] An attachment (3) fitted to a tubular attached body (48).
8) includes a first facing portion (50) and a second facing portion (51) facing each other with the base portion (12) of the handle (10) interposed therebetween, and the second facing portion (51). ) Is the base (1) of the handle (10).
A rotation restricting portion (56) pressed toward 2) to restrict the rotation of the base portion (12), and the rotation operation member (60) is rotated to rotate the base member (60) from the first facing portion (50). A handle mounting structure characterized in that the distance of the second facing portion (51) is adjustable. 2. The mounting device (38) comprises a first mounting portion (40) and a second mounting portion (42).
0) and the second mounting part (42) have the first facing part (50) and the second facing part (51), respectively, and are applied to the tubular mounted body (48) from both sides. , The first mounting portion
(40) and the second mounting portion (42) are provided in the tubular mounted body.
2. The handle mounting structure according to claim 1, further comprising a meshing portion (78, 80) that meshes with the circumferentially overlapping and relatively displaceable portion.