Wire holding structure of a working machine

Abstract

To appropriately hold a wire while facilitating attachment of a wire holder.SOLUTION: A wire holding structure X of a self-propelled mower 1 comprises: a wire holder 5 with one end attached to a handle part 3a, extending toward the side of a travel part 2 from the handle part 3a, and holding a wire 4 at a tip part; and a first attachment part 41 and a second attachment part 42 for attaching the wire holder 5 to the handle part 3a. An engagement part 51 is engaged with the first attachment part 41, a hook part 53 is hooked on the second attachment part 42, and thereby the wire holder 5 is attached to the handle part 3a.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a wire holding structure for holding a wire provided on a working machine.

Background Art

[0002] For example, Patent Document 1 describes a working machine including a self-propelled traveling work vehicle that performs mowing work and a handle device that extends obliquely upward from the traveling work vehicle. In this working machine, a wire such as a throttle wire is provided between an operation unit provided at the upper end of the handle device and the traveling work vehicle. This wire is provided in a slack state so that the handle device can be extended, contracted, and swung. Therefore, in this working machine, a wire holder for holding these wires is attached to the handle device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the working machine provided with the wire described above, it may take time to attach the wire holder for holding the wire. Therefore, in such a working machine, a configuration that can appropriately hold the wire while facilitating the attachment of the wire holder is desired.

Means for Solving the Problems

[0005] The present invention relates to a working machine (1) comprising a traveling work vehicle (2) and a handle device (3) having a rod-shaped handle portion (3a) extending obliquely upward from the traveling work vehicle (2) and operating the traveling work vehicle (2). A wire holding structure (X) of the working machine (1) for holding a wire (4) provided between an operation portion (3b) of the handle device (3) and the traveling work vehicle (2), wherein one end portion is attached to the handle portion (3a), extends from the handle portion (3a) toward the traveling work vehicle (2) side, and holds the wire (4) at the tip end portion, a wire holder (5); a first attachment portion (41) and a second attachment portion (42) respectively provided on the handle portion (3a) for attaching the wire holder (5) to the handle portion. The wire holder (5) has an engagement portion (51) provided at one end portion and engaging with the first attachment portion (41), a holding portion (52) provided at the tip end portion and holding the wire (4), and an annular hooking portion (53) provided between the engagement portion (51) and the holding portion (52) and hooked on the second attachment portion (42). The second attachment portion (42) is attached to a surface of the handle portion (3a) opposite to the traveling work vehicle (2) side, extends along a direction intersecting the extending direction of the handle portion (3a) when viewed from above, and has a support portion (42a) through which the hooking portion (53) passes, and a retaining portion (42b) extending from the tip end portion of the support portion (42a) toward the traveling work vehicle (2) side. Further, the wire holder (5) extends from the hooking portion (53) toward the traveling work vehicle (2) side through a gap between the retaining portion (42b) and the outer surface (40a) of the handle portion (3a).

[0006] In this wire holding structure (X), the wire holder (5) can be easily attached to the handle portion (3a) simply by engaging the engagement portion (51) of the wire holder (5) with the first attachment portion (41) and hooking the hooking portion (53) on the support portion (42a) of the second attachment portion (42). Thus, in the wire holding structure (X), there is no need to provide a fixing member such as a bolt when attaching the wire holder (5), and the wire holder (5) can be easily attached with a simple configuration.

[0007] In this wire holding structure (X), the wire holder (5) is supported by the handle portion (3a) when the hooking portion (53) is hooked on the support portion (42a) of the second mounting portion (42). Further, in the wire holding structure (X), the rotation of the wire holder (5) about the support portion (42a) of the second mounting portion (42) can be restricted when the engaging portion (51) of the wire holder (5) engages with the first mounting portion (41). Furthermore, the wire holder (5) extends toward the traveling work vehicle (2) side through the gap between the retaining portion (42b) and the outer surface (40a) of the handle portion (3a). Therefore, in the wire holding structure (X), the horizontal sway of the wire holder (5) can be suppressed by the retaining portion (42b) and the outer surface (40a) of the handle portion (3a). Thus, in the wire holding structure (X), since the rotation and sway of the wire holder (5) can be suppressed, the wire (4) can be held while suppressing its sway.

[0008] As described above, in the wire holding structure (X), the wire (4) can be appropriately held while facilitating the attachment of the wire holder (5).

[0009] In the wire holding structure (X) of the working machine (1), the annular hooking portion (53) may have a single-wound shape. In this case, the configuration of the wire holder (5) can be simplified, and the manufacture of the wire holder (5) becomes easy. In this wire holding structure (X), as described above, the horizontal sway of the wire holder (5) can be suppressed by the retaining portion (42b) and the outer surface (40a) of the handle portion (3a). Therefore, for example, it is not necessary to configure the hooking portion (53) to be multi-wound to eliminate the rattling between the hooking portion (53) and the support portion (42a) and suppress the horizontal sway of the wire holder (5).

[0010] In the wire holding structure (X) of the working machine (1), the handle part (3a) may include a first handle part (10), a second handle part (20) slidably arranged within the first handle part (10), and a fixing part (30) for fixing the sliding position of the second handle part (20) relative to the first handle part (10). When the handle part (3a) expands and contracts, it is necessary to give slack to the wire (4). When the wire (4) has slack, the wire (4) may interfere with the wheels (2c) etc. of the traveling work vehicle (2). By applying the wire holding structure (X) to such a working machine (1), the wire (4) can be appropriately held above the traveling work vehicle (2).

[0011] In the wire holding structure (X) of the working machine (1), the upper end of the handle part (3a) may be attached to the traveling work vehicle so as to be swingable in the vertical direction. The wire holding structure (X) is configured to hold the wire (4) above the traveling work vehicle (2) by the tip part (holding part (52)) of the wire holder (5) extending toward the traveling work vehicle (2) side. Therefore, the wire holding structure (X) can appropriately hold the wire (4) above the traveling work vehicle (2) even when the handle part (3a) swings.

Effect of the Invention

[0012] According to the present invention, it is possible to appropriately hold the wire while facilitating the attachment of the wire holder.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

BEST MODE FOR CARRYING OUT THE INVENTION

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the same or corresponding elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[0015] First, with reference to FIGS. 1 and 2, the basic configuration of the self-propelled lawn mower 1 to which the wire holding structure X according to the embodiment is applied will be described. In FIG. 2, the wire 4 is omitted. As shown in FIGS. 1 and 2, the self-propelled lawn mower (working machine) 1 includes a self-propelled traveling unit (traveling work vehicle) 2 and a telescopic handle device (handle device) 3 for operating the self-propelled lawn mower 1. An operator operates the telescopic handle device 3 of the self-propelled lawn mower 1 and, for example, while driving the traveling unit 2 on the ground where grass has grown, performs a work of mowing the grass by the traveling unit 2. In the following description, "front", "rear", "left", and "right" are based on the self-propelled lawn mower 1 unless otherwise specified.

[0016] The traveling unit 2 includes a drive source 2a such as an engine. The traveling unit 2 can travel in the front-rear direction by driving the wheels 2c provided on the unit main body 2b by the drive source 2a. Further, a lawn mowing unit 2d is provided on the lower surface of the unit main body 2b. The lawn mowing unit 2d mows grass by rotating a cutter, for example, by the driving force of the drive source 2a.

[0017] The telescopic handle device 3 includes a rod-shaped handle portion 3a and an operation portion 3b. The lower end portion of the handle portion 3a is attached to the left side surface of the unit main body 2b of the traveling unit 2. The handle portion 3a has a rod shape and extends obliquely upward from the unit main body 2b. In the present embodiment, the handle portion 3a extends obliquely rearward and upward from the unit main body 2b.

[0018] The operation unit 3b is provided at the upper end of the handle unit 3a. The operator controls the traveling direction of the traveling unit 2 by operating the operation unit 3b. Further, the operator controls the traveling (forward, backward, traveling speed, etc.) of the traveling unit 2 and the operation of the mowing unit 2d by operating various operation levers and the like provided on the operation unit 3b.

[0019] The telescopic handle device 3 is capable of telescoping the handle unit 3a so that it is easy for the operator to operate and for storage and the like. The handle unit 3a of the telescopic handle device 3 includes a first handle unit 10, a second handle unit 20, and a lever unit (fixed unit) 30.

[0020] The first handle unit 10 is a rod-shaped member having a cylindrical shape. In the present embodiment, the first handle unit 10 has a rectangular cylindrical shape (square cylindrical shape). A bracket 3c for attaching the first handle unit 10 to the unit main body 2b is provided at the lower end of the first handle unit 10. The bracket 3c has a function of adjusting the angle of the first handle unit 10 (handle unit 3a) extending obliquely rearward upward from the unit main body 2b. That is, the handle unit 3a is attached to the traveling unit 2 such that the upper end portion is swingable in the vertical direction.

[0021] The second handle unit 20 is a rod-shaped member and is disposed so as to be insertable and removable (slidable) within the first handle unit 10. That is, the second handle unit 20 slides along the extending direction of the first handle unit 10 with respect to the first handle unit 10. The second handle unit 20 has, for example, a rectangular cylindrical shape (square cylindrical shape).

[0022] The second handle part 20 is inserted into and removed from the insertion port 10b provided at the upper end of the first handle part 10. An operation part 3b is provided at the upper end part of the second handle part 20. The length of the handle part 3a is adjusted by changing the protruding length of the second handle part 20 with respect to the first handle part 10. The lever part 30 is attached to the first handle part 10. The lever part 30 fixes (restricts) the slide (movement in the insertion and removal direction) of the second handle part 20 with respect to the first handle part 10 in a releasable manner.

[0023] Further, the self-propelled lawn mower 1 further includes a wire 4 provided between the operation part 3b of the telescopic handle device 3 and the traveling part 2, and a wire holder 5 that holds the wire 4. The wire 4 includes various wires for controlling the operations of the respective parts of the traveling part 2, such as a throttle wire for controlling the drive source 2a. In the present embodiment, the handle part 3a of the telescopic handle device 3 is telescopic. For this reason, the wire 4 is provided with a slack in advance so that the handle part 3a can be extended. Also, a plurality of wires 4 are provided in the present embodiment.

[0024] The wire holder 5 is attached to the handle part 3a of the telescopic handle device 3. The wire holder 5 holds the wire 4 at a position above the traveling part 2 so that the wire 4 provided with a slack is not caught by the wheels 2c of the traveling part 2 or the like. Hereinafter, the details of the wire holding structure X for holding the wire 4 will be described.

[0025] As shown in FIG. 2, the handle part 3a includes an operation part frame 40 attached to the upper end part of the second handle part 20. The operation part 3b is attached to the operation part frame 40. The lower end part of the operation part frame 40 is fixed to the upper end part of the second handle part 20. The wire holder 5 is attached to the operation part frame 40 of the handle part 3a.

[0026] As shown in FIGS. 3 to 5, the wire holding structure X that holds the wire 4 includes a wire holder 5 that holds the wire 4, and a first attachment portion 41 and a second attachment portion 42 for attaching the wire holder 5 to the operation portion frame 40 of the handle portion 3a. In FIGS. 3 to 5, the wire 4 is omitted to show the wire holder 5 and the like.

[0027] The first attachment portion 41 and the second attachment portion 42 are respectively provided on the operation portion frame 40 of the handle portion 3a. The first attachment portion 41 is a plate-like member. The first attachment portion 41 is attached to the outer surface 40a so as to rise from the outer surface 40a of the operation portion frame 40. The first attachment portion 41 fixes the wire 4 to the operation portion frame 40. Further, a notch 41a is provided in a portion of the first attachment portion 41 that faces the outer surface 40a of the operation portion frame 40. This notch 41a is provided in a portion that faces the left outer surface 40a of the operation portion frame 40. A hole extending along the extending direction of the operation portion frame 40 is formed by the wall surface of the notch 41a of the first attachment portion 41 and the outer surface 40a of the operation portion frame 40.

[0028] The second attachment portion 42 is an L-shaped member. Specifically, the second attachment portion 42 is configured to have a support portion 42a and a retaining portion 42b. The support portion 42a is a rod-shaped member. The support portion 42a is attached to a surface of the handle portion 3a (operation portion frame 40) opposite to the traveling portion 2 side. Further, when viewed from above, the support portion 42a extends along a direction intersecting the extending direction of the handle portion 3a. That is, in the present embodiment, the support portion 42a is attached to the rear surface of the operation portion frame 40. Further, the support portion 42a extends along the left-right direction. A hook portion 53 of the wire holder 5 described later is hooked on the support portion 42a.

[0029] Note that the support portion 42a protrudes from the operation portion frame 40 toward the side where the notch 41a is provided with respect to the operation portion frame 40. That is, the support portion 42a protrudes from the operation portion frame 40 toward the left side.

[0030] The extraction prevention part 42b extends from the tip of the support part 42a toward the traveling part 2 side. That is, in the present embodiment, the extraction prevention part 42b extends forward from the left tip of the support part 42a.

[0031] The wire holder 5 is a substantially rod-shaped member. One end of the wire holder 5 is attached to the operation part frame 40 of the handle part 3a, and it extends from the handle part 3a (operation part frame 40) toward the traveling part 2 side (front side) (see Fig. 1). The wire holder 5 holds the wire 4 at the tip on the traveling part 2 side.

[0032] The wire holder 5 includes an engaging part 51, a holding part 52, and a hooking part 53. The engaging part 51 is provided at one end of the substantially rod-shaped wire holder 5. Here, one end of the wire holder 5 is the end on the side attached to the operation part frame 40. The engaging part 51 has a straight rod shape in the present embodiment. The engaging part 51 engages with the first attachment part 41. In the present embodiment, the engaging part 51 engages with the first attachment part 41 by being inserted downward into the hole formed by the notch 41a of the first attachment part 41 and the outer surface 40a of the operation part frame 40.

[0033] The holding part 52 is provided at the tip of the wire holder 5 that extends from the operation part frame 40 toward the traveling part 2 side. The holding part 52 holds a plurality of wires 4 together. In the present embodiment, the holding part 52 is formed by bending the tip of the wire holder 5 into a ring shape. The wire 4 is held by the holding part 52 of the wire holder 5 by passing through the ring-shaped holding part 52.

[0034] The engaging portion 53 is provided between the engaging portion 51 and the holding portion 52. The engaging portion 53 has an annular shape. In the present embodiment, the engaging portion 53 is formed by bending the intermediate portion of the wire holder 5 into an annular shape. Further, the annular engaging portion 53 has a single-wound shape. Here, the single-wound shape means a shape in which two or more annular shapes formed around the axis are not provided in the axial direction. The support portion 42a of the second attachment portion 42 is passed through the inside of the annular shape of the engaging portion 53 and hooked on the support portion 42a. That is, the engaging portion 53 is supported by the support portion 42a from the inside of the annular shape.

[0035] In this way, the wire holder 5 is attached to the operation unit frame 40 by engaging the engaging portion 51 with the first attachment portion 41 and hooking the engaging portion 53 on the support portion 42a of the second attachment portion 42. In this state, the wire holder 5 extends from the engaging portion 53 toward the traveling portion 2 side (front side) through the gap between the retaining portion 42b of the second attachment portion 42 and the outer surface 40a of the operation unit frame 40. Since the retaining portion 42b is provided at the end of the support portion 42a, even if the engaging portion 53 of the wire holder 5 moves in the extending direction of the support portion 42a, the engaging portion 53 is prevented from falling off the support portion 42a.

[0036] Next, the procedure for attaching the wire holder 5 to the operation unit frame 40 will be described. First, an operator performing the attachment work inserts the engaging portion 51 of the wire holder 5 into the notch 41a of the first attachment portion 41. Then, the operator passes the engaging portion 53 of the wire holder 5 through the retaining portion 42b of the second attachment portion 42 and moves the engaging portion 53 to the support portion 42a so that the holding portion 52 faces the traveling portion 2 side. Thereby, the wire holder 5 is attached to the operation unit frame 40. When removing the wire holder 5, the reverse procedure of the above-described attachment procedure may be performed.

[0037] As described above, in this wire holding structure X, by engaging the engaging portion 51 of the wire holder 5 with the first attachment portion 41 provided on the operation portion frame 40 and hooking the hooking portion 53 on the support portion 42a of the second attachment portion 42, the wire holder 5 can be easily attached to the handle portion 3a (operation portion frame 40). Thus, in the wire holding structure X, there is no need to provide a fixing member such as a bolt when attaching the wire holder 5, and the wire holder 5 can be attached with a simple configuration.

[0038] Also, in the wire holding structure X, when the hooking portion 53 of the wire holder 5 is hooked on the support portion 42a of the second attachment portion 42, the wire holder 5 is supported by the handle portion 3a (operation portion frame 40). Further, when the engaging portion 51 of the wire holder 5 engages with the first attachment portion 41 provided on the operation portion frame 40, the rotation of the wire holder 5 about the support portion 42a of the second attachment portion 42 can be restricted. That is, the rotation of the wire holder 5 about the support portion 42a in the direction in which the holding portion 52 moves up and down is restricted.

[0039] Furthermore, the wire holder 5 extends toward the traveling portion 2 side through the gap between the retaining portion 42b and the outer surface 40a of the operation portion frame 40 (handle portion 3a). Therefore, the horizontal sway of the wire holder 5 can be suppressed by the retaining portion 42b and the outer surface 40a of the operation portion frame 40. Thus, in the wire holding structure X, since the rotation and sway of the wire holder 5 can be suppressed, the wire 4 can be held while suppressing its sway.

[0040] As described above, in the wire holding structure X, the wire 4 can be appropriately held while facilitating the attachment of the wire holder 5.

[0041] In the wire holder 5, the annular engaging portion 53 has a single-wound shape. In this case, the configuration of the wire holder 5 can be simplified, and the manufacture of the wire holder 5 becomes easy. In this wire holding structure X, as described above, the horizontal shaking of the wire holder 5 can be suppressed by the retaining portion 42b and the outer surface 40a of the operation portion frame 40. Therefore, for example, it is not necessary to configure the engaging portion 53 to be multi-wound to eliminate the rattling between the engaging portion 53 and the support portion 42a and suppress the horizontal shaking of the wire holder 5.

[0042] The handle portion 3a of the telescopic handle device 3 is telescopic. When the handle portion 3a expands and contracts, it is necessary to give slack to the wire 4. When the wire 4 has slack, the wire 4 may interfere with the wheels 2c of the traveling portion 2 or the like. By applying the wire holding structure X to such a self-propelled lawn mower 1, the wire 4 can be appropriately held above the traveling portion 2.

[0043] The upper end portion of the handle portion 3a is attached to the traveling portion 2 so as to be swingable in the vertical direction. The wire holding structure X is configured to hold the wire 4 above the traveling portion 2 by the tip portion (holding portion 52) of the wire holder 5 extending toward the traveling portion 2 side. Therefore, the wire holding structure X can appropriately hold the wire 4 above the traveling portion 2 even when the handle portion 3a swings.

[0044] As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above embodiments. For example, the traveling portion 2 may be a traveling work vehicle that performs work other than mowing. That is, the wire holding structure X for holding the wire 4 may be applied to a working machine other than the self-propelled lawn mower 1.

Explanation of Reference Numerals

[0045] 1…Self-propelled grass mower (working machine), 2…Traveling section (traveling work vehicle), 3…Telescopic handle device (handle device), 3a…Handle section, 3b…Operation section, 4…Wire, 5…Wire holder, 10…First handle section, 20…Second handle section, 30…Lever section (fixed section), 40a…Outer surface, 41…First attachment section, 42…Second attachment section, 42a…Support section, 42b…Retention section, 51…Engagement section, 52…Holding section, 53…Hooking section, X…Wire holding structure.

Claims

1. In a working machine (1) comprising a traveling work vehicle (2) and a handle device (3) having a rod-shaped handle portion (3a) extending obliquely upward from the traveling work vehicle (2) and operating the traveling work vehicle (2), a wire holding structure (X) of the working machine (1) for holding a wire (4) provided between an operation portion (3b) of the handle device (3) and the traveling work vehicle (2), A wire holder (5) having one end attached to the handle portion (3a), extending from the handle portion (3a) toward the traveling work vehicle (2) side, and holding the wire (4) at a tip end portion, First attachment portions (41) and second attachment portions (42) respectively provided on the handle portion (3a) for attaching the wire holder (5) to the handle portion, comprising: The wire holder (5) has, An engaging portion (51) provided at the one end and engaging with the first attachment portion (41), A holding portion (52) provided at the tip end portion and holding the wire (4), An annular hooking portion (53) provided between the engaging portion (51) and the holding portion (52) and hooked by the second attachment portion (42), having: The second attachment portion (42) has, A support portion (42a) attached to a surface of the handle portion (3a) opposite to the traveling work vehicle (2) side, extending along a direction intersecting the extending direction of the handle portion (3a) when viewed from above, and through which the hooking portion (53) passes, A retaining portion (42b) extending from a tip end portion of the support portion (42a) toward the traveling work vehicle (2) side, having: The wire holder (5) extends from the hooking portion (53) toward the traveling work vehicle (2) side through a gap between the retaining portion (42b) and an outer surface (40a) of the handle portion (3a). The wire holding structure (X) of the working machine (1).

2. The wire holding structure (X) of the working machine (1) according to claim 1, wherein the annular hooking portion (53) has a single-wound shape.

3. The handle portion (3a) comprises a first handle portion (10), a second handle portion (20) slidably disposed within the first handle portion (10), and a fixing portion (30) for fixing the sliding position of the second handle portion (20) with respect to the first handle portion (10), and is the wire holding structure (X) of the working machine (1) according to claim 1 or 2.

4. The wire holding structure (X) of the working machine (1) according to any one of claims 1 to 3, wherein the upper end of the handle portion (3a) is swingably attached to the traveling work vehicle in the vertical direction.

Images