Scatter protection cover and brush cutter

Abstract

To install simply a scattering protective cover onto a main shaft with various diameter.SOLUTION: A scattering protective cover 8 includes an installation part 1 installed on a main shaft 92 by sandwiching a part of an outer peripheral surface 925 in the axial direction of the main shaft 92 of a bush cutter 9, and a cover body part 2 attached to the main shaft 92 through the installation part 1. The installation part 1 has an inner peripheral surface 125 pressing onto the outer peripheral surface 925 of the main shaft 92, and the inner diameter of the inner peripheral surface 125 is constituted switchably in multiple steps.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a splash guard cover and a brush cutter equipped with the same. [Background technology]

[0002] A scattering protection cover for a brush cutter is known (see Patent Document 1, etc.). By attaching this type of scattering protection cover to the main shaft of the brush cutter, it is possible to prevent grass clippings and pebbles (hereinafter referred to as "grass clippings, etc.") from scattering toward the user. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3187665 Summary of the Invention [Problem to be solved by the invention]

[0004] The conventional splash guard cover described above is designed to be attachable to a spindle having a specific diameter. In other words, the conventional splash guard cover can only be attached to one spindle diameter, making it difficult to attach to a spindle with a different diameter.

[0005] An object of the present disclosure is to enable a splash guard cover to be easily attached to spindles of various diameters. [Means for solving the problem]

[0006] A splash guard cover according to one aspect of the present disclosure is a splash guard cover to be attached to a main shaft of a brush cutter, and includes a mounting part that is attached to the main shaft by clamping an outer peripheral surface of the main shaft in an axial direction, and a cover main body that is attached to the main shaft via the mounting part. The mounting part has an inner peripheral surface that presses against the outer peripheral surface of the main shaft, and the inner diameter of the inner peripheral surface is switchable in multiple stages.

[0007] A brush cutter according to one aspect of the present disclosure includes the scattering protection cover and the main shaft to which the scattering protection cover is attached. [Effects of the Invention]

[0008] The present disclosure provides an advantage in that the splash protection cover can be easily attached to spindles of various diameters. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a splash guard cover according to one embodiment. [Figure 2] FIG. 2 is a top view of the above splash protection cover. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Figure 5] FIG. 5 is a perspective view of a main part of a cover body provided in the above-mentioned scattering protection cover. [Figure 6] FIG. 6 is a perspective view of a connector included in a mounting portion of the above-mentioned splash guard cover. [Figure 7] FIG. 7 is a side view of the connector. [Figure 8] 8A and 8B are explanatory diagrams showing the operation of the mounting portion. [Figure 9] FIG. 9 is a perspective view showing the above-mentioned scattering protection cover attached to a brush cutter when in use. DETAILED DESCRIPTION OF THE INVENTION

[0010] 1. Embodiment 1-1. Overall structure FIG. 9 shows a state in which a scattering protection cover 8 according to one embodiment is attached to a main shaft 92 of a brush cutter 9.

[0011] The brush cutter 9 includes a hollow main shaft 92, a plurality of linear cutters 94 attached to a first axial end of the main shaft 92, an engine 96 mounted on a second axial end of the main shaft 92, and a handle 98 connected to an axial intermediate portion of the main shaft 92. The first axial end of the main shaft 92 is, in other words, the front end of the main shaft 92, and the second axial end of the main shaft 92 is, in other words, the rear end of the main shaft 92. The front-to-rear direction here is based on the position of a user when using the brush cutter 9.

[0012] A rotary shaft (not shown) is inserted inside the main shaft 92, and when the rotary shaft is rotated by the drive of the engine 96, this rotation is transmitted to rotate and drive the plurality of linear cutters 94. Each linear cutter 94 is made of a synthetic resin such as nylon. Instead of or in addition to these linear cutters 94, a rotary blade such as a chip saw can be attached to the first axial end of the main shaft 92.

[0013] A shoulder strap 97 is also attached to the main shaft 92, and the user can put the shoulder strap 97 on their shoulder, hold the handle 98, and mow the grass while swinging the brush cutter 9 from side to side.

[0014] The scattering protection cover 8 is attached to a portion of the main shaft 92 in the axial direction. The scattering protection cover 8 is mainly formed by an attachment portion 1, a cover main body portion 2, and an intermediate portion 3. The attachment portion 1 is a portion that is detachably attached to the main shaft 92, and the cover main body portion 2 is a portion for receiving grass clippings and the like. The intermediate portion 3 is a portion that connects the attachment portion 1 and the cover main body portion 2. In other words, the cover main body portion 2 is detachably attached to the main shaft 92 via the intermediate portion 3 and the attachment portion 1.

[0015] Each component of the splash protection cover 8 will be described in further detail below.

[0016] 1-2. Mounting part The mounting portion 1 has a connector 12, a lever 14, a hook 16, and a plurality of hook portions 18.

[0017] As shown in Figures 1, 6, etc., connector 12 is a C-shaped member having a smoothly concavely curved inner circumferential surface 125. Connector 12 is made of, for example, a synthetic resin and has elasticity. Inner circumferential surface 125 of connector 12 is a concavely curved surface that is curved in an arc shape. The inner diameter of inner circumferential surface 125 of connector 12 can be changed by deforming connector 12.

[0018] In one embodiment of splash guard cover 8, inner peripheral surface 125 of connector 12 is configured to press against a portion of outer peripheral surface 925 (see FIG. 9 ) of main shaft 92 in the axial direction, and to clamp this portion of outer peripheral surface 925. In this way, connector 12 is attached to main shaft 92.

[0019] The C-shaped connector 12 has a first end 121 and a second end 122 located on opposite sides of each other. Both the first end 121 and the second end 122 are provided so as to protrude upward when in use, and when no external force is applied, the first end 121 and the second end 122 are inclined so as to approach each other. A gap 128 is provided between the first end 121 and the second end 122, separating them.

[0020] The first end 121 is provided with a protruding portion 123 for connecting the lever 14. The protruding portion 123 protrudes in a direction away from the gap 128, and a recessed connecting portion 124 for connecting the lever 14 is formed at the tip of the protruding portion.

[0021] The second end 122 is provided with a protruding portion 126. The protruding portion 126 of the second end 122 has a plurality of hook portions 18 formed thereon. The protruding direction of the protruding portion 126 of the second end 122 is the same as the protruding direction of the protruding portion 123 of the first end 121. The protruding portion 126 of the second end 122 protrudes in a direction away from the gap 128, similar to the protruding portion 123 of the first end 121. The two protruding portions 123, 126, which are spaced apart, are parallel to each other. The two protruding portions 123, 126 protrude upward in use. The term "parallel" used in this document is not limited to "parallel" in the strict sense, but also includes the case of being approximately parallel.

[0022] As shown in Figures 1, 8, etc., lever 14 is a member made of, for example, synthetic resin, and has a shape in which short side portion 141 and long side portion 142 intersect in an L shape. A connecting portion 144 is formed at the protruding portion of short side portion 141 for rotatably connecting lever 14 to connecting portion 124 of connector 12. Connecting portions 124, 144 rotatably fit together, so that lever 14 is rotatably connected to protruding portion 126 of connector 12, and therefore to first end portion 121. Lever 14 is displaceable relative to connector 12.

[0023] Long side portion 142 is the portion through which the user operates the lever, and its tip portion is curved to make it easier for the user to hook his / her finger. The direction in which the tip portion of long side portion 142 curves is opposite to the direction in which short side portion 141 is positioned relative to long side portion 142.

[0024] The hook 16 is rotatably connected to a portion 146 of the lever 14 that is distant from the connecting portion 144. In one embodiment of the splash guard cover 8, the portion 146 to which the hook 16 is connected is the intersection of the short side portion 141 and the long side portion 142. The hook 16 is made of a wire bent into a trapezoidal shape, and specifically includes a straight portion 161 that can be engaged with the hook portion 18, and a pair of extension portions 162 that extend from both ends of the straight portion 161 (see FIG. 2). The pair of extension portions 162 are inclined so that the distance between them increases as they move away from the straight portion 161. The tip end (not shown) of each extension portion 162 is rotatably connected to the portion 146 of the lever 14. In one embodiment of the splash guard cover 8, the hook 16 is attached to the connector 12 via the lever 14.

[0025] 8, the multiple hook portions 18 are configured with multiple grooves 181, 182, and 183. In one embodiment of the splash guard cover 8, the multiple grooves 181, 182, and 183 are three grooves 181, 182, and 183 positioned side by side and parallel to one another. The three grooves 181, 182, and 183 are provided so that the tip portion 161 of the hook 16 can be selectively hooked onto one of them.

[0026] The opening direction of the three grooves 181, 182, 183 is opposite to the direction in which the first end 121 is positioned relative to the second end 122 of the connector 12; in other words, it is opposite to the direction in which the protruding portion 123 to which the lever 14 is connected is positioned relative to the protruding portion 126 in which the three grooves 181, 182, 183 are formed.

[0027] The three grooves 181, 182, 183 are a first groove 181 used when the main shaft 92 has a relatively small diameter (for example, when the diameter is 24 mm), a second groove 182 used when the main shaft 92 has a standard diameter (for example, when the diameter is 25 mm), and a third groove 183 used when the main shaft 92 has a relatively large diameter (for example, when the diameter is 26 mm).

[0028] The distances between the groove bottoms of first groove 181, second groove 182, and third groove 183 and connecting portion 124 included in connector 12 are different from one another. Specifically, the distance between the groove bottom of first groove 181 and connecting portion 124 is set to be larger than the distance between the groove bottom of second groove 182 and connecting portion 124. The distance between the groove bottom of second groove 182 and connecting portion 124 is set to be larger than the distance between the groove bottom of third groove 183 and connecting portion 124.

[0029] In one embodiment, the shatterproof cover 8 is configured so that the inner diameter of the mounting portion 1 (i.e., the inner diameter of the elastic connector 12) changes in multiple stages depending on whether the hook 16 of the mounting portion 1 is hooked into the first, second, or third groove 181, 182, or 183. When the hook 16 of the mounting portion 1 is hooked into the first groove 181, due to the geometric relationship between the connector 12, lever 14, and hook 16, the connector 12 undergoes a relatively large elastic deformation so as to clamp a main shaft 92 having a relatively small diameter (e.g., 24 mm diameter). When the hook 16 is hooked into the second groove 182, the connector 12 undergoes an elastic deformation so as to clamp a main shaft 92 having a standard diameter (e.g., 25 mm diameter). When the hook 16 is hooked into the third groove 183, the connector 12 undergoes a relatively small elastic deformation so as to clamp a main shaft 92 having a relatively large diameter (e.g., 26 mm diameter).

[0030] 1-3. Cover body 1 and other figures, the cover main body 2 is made of, for example, synthetic resin and has a shape like the upper half of a bowl-shaped member split into upper and lower halves. The cover main body 2 is provided with a receiving surface 21 for receiving grass clippings and preventing them from scattering. The receiving surface 21 faces the front end of the main shaft 92 when in use, in other words, faces the side of the cover main body 2 opposite to the side where the user is positioned when in use.

[0031] The receiving surface 21 includes a concave curved surface 215 that forms the main body of the receiving surface 21, and a clamping surface 217 that forms the peripheral edge of the receiving surface 21. The concave curved surface 215 and the clamping surface 217 are directly continuous, but other surfaces may be interposed between the concave curved surface 215 and the clamping surface 217.

[0032] Concave surface 215 is a surface that is concave toward the rear (i.e., toward the user when in use). As shown in Fig. 3, the longitudinal cross section of concave surface 215 is an arc-shaped cross section that is concave toward the rear. Also, as shown in Fig. 4, the transverse cross section of concave surface 215 is an arc-shaped cross section that is concave toward the rear. Here, "rear" refers to the user when in use.

[0033] The radius of curvature of the longitudinal cross section of concave curved surface 215 is set to be larger than the radius of curvature of the transverse cross section of concave curved surface 215. It is not required that the entire concave curved surface 215 is a concave curved surface in the strict sense, and for example, it may include a flat or convex surface in part, as long as it is a concave curved surface as a whole.

[0034] A plurality of recesses 23 are provided at a distance from each other on the concave curved surface 215 to more effectively prevent grass clippings and the like from scattering. The plurality of recesses 23 are a large number of recesses 23 dispersed over the entire surface of the concave curved surface 215.

[0035] The back surface of the receiving surface 21 of the cover main body 2 (i.e., the surface facing the user when in use) is a surface that smoothly bulges toward the rear, and the thickness of the part of the cover main body 2 where the recessed portion 23 is provided is thinner than the thickness of the part of the cover main body 2 where the recessed portion 23 is not provided (see Figure 3, etc.).

[0036] Each recess 23 is a circular recess having a circular opening and a circular bottom surface that is smaller than the opening. The shape of the recess 23 is not limited to this and may be other shapes, such as an ellipse, a polygon, or a combination thereof. In one embodiment of the shatterproof cover 8, the recesses 23 have the same dimensions, but they may also have different dimensions or shapes. For example, the recesses 23 arranged in the upper region of the concave curved surface 215 may differ in either or both of their dimensions and shapes from the recesses 23 arranged in the lower region. Alternatively, the recesses 23 arranged in the central region of the concave curved surface 215 may differ in either or both of their dimensions and shapes from the recesses 23 arranged in the peripheral region surrounding the central region.

[0037] Next, the suppression surface 217 will be described. The suppression surface 217 is provided to be located forward of the concave surface 215 (i.e., on the side away from the user when in use) in order to more reliably suppress the scattering of grass clippings and the like. The suppression surface 217 has an angle that tilts further inward than the peripheral edge of the concave surface 215. The suppression surface 217 has an outline that is convex upward in an arc shape.

[0038] Furthermore, in one embodiment of the splash guard cover 8, a fixing portion 25 for fixing and suspending the flexible extension cover 7 is provided at the bottom of the cover main body 2. The fixing portion 25 is an arc-shaped portion that bulges smoothly toward the rear. The portion of the cover main body 2 where the concave curved surface 215 is provided and the fixing portion 25 located below it are directly continuous, but they may also be continuous via another portion.

[0039] The fixing portion 25 can have any suitable structure as long as it can fix the upper end of the extension cover 7, but in order to easily replace the extension cover 7, which is a consumable item, it is preferable to use a structure that fixes the extension cover 7 in a removable manner.

[0040] The extension cover 7 is a flexible cover made of synthetic resin. The extension cover 7 may be transparent or translucent, or may be colored. The extension cover 7 has a plurality of slits 72 cut upward from the lower edge of the extension cover 7. The plurality of slits 72 are each linear and parallel to one another. Each portion of the extension cover 7 separated by the plurality of slits 72 constitutes a flexible strip-shaped portion 74. In one embodiment of the scattering protection cover 8, the lower portion of the extension cover 7 (i.e., the plurality of strip-shaped portions 74) can be rubbed against the ground, more reliably preventing grass clippings and the like from scattering.

[0041] 1-4.Middle section The intermediate part 3 is composed of a first intermediate part 31 provided on the side of the mounting part 1 and a second intermediate part 32 provided on the side of the cover main body part 2. The second intermediate part 32 is rotatably connected to the first intermediate part 31. The relative angle of the cover main body part 2 with respect to the mounting part 1 (hereinafter referred to as the "relative angle") can be freely changed via the first intermediate part 31 and the second intermediate part 32.

[0042] The first intermediate portion 31 is provided on the outer surface of the second end portion 122 of the connector 12 (see Figures 6, 7, etc.). The first intermediate portion 31 is molded integrally with the connector 12 using synthetic resin. The first intermediate portion 31 has a circular main body portion 311 protruding from the outer surface of the connector 12, and an insertion hole 313 passing through the center of the main body portion 311.

[0043] The second intermediate portion 32 is provided on the outer surface of the lower part of the cover main body 2 (see FIG. 5, etc.). The second intermediate portion 32 is molded integrally with the cover main body 2 using synthetic resin. The second intermediate portion 32 has a cylindrical rotating shaft 321 protruding from the outer surface of the lower part of the cover main body 2, and an annular peripheral wall portion 323 protruding from the outer surface of the lower part of the cover main body 2. The peripheral wall portion 323 is positioned so as to surround the entire circumference of the rotating shaft 321. The rotating shaft 321 is composed of a cylindrical shaft body that penetrates in the axial direction.

[0044] In the intermediate portion 3, the rotating shaft 321 of the second intermediate portion 32 is rotatably inserted into the insertion hole 313 of the first intermediate portion 31, and the main body portion 311 of the first intermediate portion 31 is rotatably fitted inside the peripheral wall portion 323 of the second intermediate portion 32, so that the first intermediate portion 31 and the second intermediate portion 32 are connected to each other so as to be rotatable relative to each other.

[0045] In one embodiment of the splash guard cover 8, the middle section 3 further includes a locking structure that fixes the relative angle of the cover main body 2, a spring structure that applies a spring force to the cover main body 2, and a rotation restriction structure that restricts the relative angle of the cover main body 2 within a predetermined range. The locking structure, spring structure, and rotation restriction structure will be described in detail below.

[0046] The locking structure includes a first engagement portion 41 provided integrally on the mounting portion 1 side, and a second engagement portion 42 provided integrally on the cover main body 2 side. The first engagement portion 41 and the second engagement portion 42 are configured to be able to engage with each other at multiple rotation angles.

[0047] The first engagement portion 41 is composed of multiple pairs of engagement grooves 411, 412, 413 provided on the outer circumferential edge portion of the main body portion 311 of the first intermediate portion 31. In one embodiment of the shatterproof cover 8, the multiple pairs of engagement grooves 411, 412, 413 are three pairs of engagement grooves 411, 412, 413 positioned side by side in the circumferential direction of the main body portion 311, and more specifically, a pair of first engagement grooves 411 positioned on opposite sides of the center of the main body portion 311 (in other words, the insertion hole 313), a pair of second engagement grooves 412 positioned on opposite sides of the center of the main body portion 311, and a pair of third engagement grooves 413 positioned on opposite sides of the center of the main body portion 311. A pair of first engagement grooves 411 and a pair of second engagement grooves 412 are positioned adjacent to each other in the circumferential direction, and a pair of second engagement grooves 412 and a pair of third engagement grooves 413 are positioned adjacent to each other in the circumferential direction.

[0048] The second engagement portion 42 is composed of a pair of engagement protrusions 421 located on opposite sides of the center of the second intermediate portion 32 (in other words, the rotation axis 321). The pair of engagement protrusions 421 selectively engage with one of the three pairs of engagement grooves 411, 412, 413. The relative angle of the cover main body 2 is determined by which pair of engagement protrusions 421 engages with which pair of engagement grooves 411, 412, 413.

[0049] The locking structure is configured to release the fixed relative angle of the cover main body 2 by moving the cover main body 2 in a predetermined direction (hereinafter referred to as the "first direction"). The first direction is a direction away from the mounting portion 1 along the rotation center axis of the cover main body 2 (in other words, along the axial direction of the rotation shaft 321).

[0050] That is, because all three pairs of engagement grooves 411, 412, 413 are open in the first direction, moving the cover main body 2 in the first direction smoothly releases the engagement between the pair of engagement protrusions 421 and any one of the three pairs of engagement grooves 411, 412, 413. After the engagement between the pair of engagement protrusions 421 has been released, by rotating the cover main body 2 and moving the cover main body 2 in a direction opposite to the first direction (hereinafter referred to as the "second direction"), the relative angle of the cover main body 2 can be changed and the pair of engagement protrusions 421 can be engaged with another pair of the three pairs of engagement grooves 411, 412, 413.

[0051] Next, the spring structure will be described. The spring structure includes a coil spring 52 housed between the first intermediate portion 31 and the second intermediate portion 32 (see FIG. 4). The coil spring 52 is a compression spring. The coil spring 52 is disposed in a compressed state between the head portion of a bolt 325 screwed into a through-hole of a rotation shaft 321 of the second intermediate portion 32 and the main body portion 311 of the first intermediate portion 31. The spring force that the compressed coil spring 52 imparts to the cover main body 2 via the first and second intermediate portions 31, 32 is a spring force that urges the cover main body 2 in the second direction.

[0052] Therefore, to release the engagement between the first engagement portion 41 and the second engagement portion 42, for example, the cover main body 2 can be grasped with a hand and moved in the first direction against the spring force. If the cover main body 2 is rotated and then released, the spring force will move the cover main body 2 in the second direction. This allows the pair of engagement protrusions 421 to be easily and stably engaged with another pair of the three pairs of engagement grooves 411, 412, 413.

[0053] Next, the rotation restriction structure will be described. The rotation restriction structure includes a first rotation restriction part 61 provided in the first intermediate part 31 (i.e., integrally provided on the side of the mounting part 1) and a second rotation restriction part 62 provided in the second intermediate part 32 (i.e., integrally provided on the side of the cover main body part 2). The relative angle of the cover main body part 2 can be changed within the range in which the first rotation restriction part 61 and the second rotation restriction part 62 fit together.

[0054] The first rotation restricting portion 61 is configured with a restricting groove 615 formed in the main body portion 311. The restricting groove 615 is a groove formed in an arc shape around the center of the circular main body portion 311 (in other words, centered on the insertion hole 313). The restricting groove 615 is open in the first direction, similar to the engagement grooves 411, 412, 413 of the first engagement portion 41 (see FIG. 6). The depth dimension of the restricting groove 615 in the first direction is set to be sufficiently larger than the depth dimension of the engagement grooves 411, 412, 413 in the first direction.

[0055] The second rotation restricting portion 62 is configured with a restricting protrusion 625 located between the rotation shaft 321 and the peripheral wall portion 323 of the second intermediate portion 32 (see FIG. 5, etc.). The restricting protrusion 625 is a protrusion formed in an arc shape around the center of the rotation shaft 321 and the peripheral wall portion 323 (in other words, with the rotation shaft 321 as the center). The restricting protrusion 625 protrudes in the same direction as the rotation shaft 321 and the peripheral wall portion 323. The protrusion amount of the restricting protrusion 625 is set to be smaller than the protrusion amount of the rotation shaft 321 and larger than the protrusion amount of the pair of engagement protrusions 421. The protrusion amount here refers to the protrusion amount along the rotation central axis of the cover main body portion 2.

[0056] The restricting protrusion 625 has a dimension and shape that allows it to move within a predetermined range around the center of the rotation shaft 321 and the peripheral wall portion 323 when inserted inside the restricting groove 615 (see FIG. 7). Within the range in which the relative angle of the cover main body 2 is restricted by the fit between the restricting protrusion 625 and the restricting groove 615, the pair of engaging protrusions 421 of the second engaging portion 42 can engage with any one pair of the three pairs of engaging grooves 411, 412, 413.

[0057] 1-5. Usage form To attach the splash guard cover 8 having the above-described configuration to the main shaft 92 of the brush cutter 9, as shown in FIG. 8A, insert the main shaft 92 into the C-shaped connector 12, and then operate the lever 14 in a direction away from the connector 12 to hook the tip portion 161 of the hook 16 into an appropriate one of the three grooves 181, 182, and 183. Next, as shown in FIG. 8B, operate the lever 14 in a direction toward the connector 12 to elastically deflect the entire synthetic resin connector 12 via the metal hook 16. As a result, the inner circumferential surface 125 of the connector 12 clamps a portion of the outer circumferential surface 925 of the main shaft 92 in the axial direction. Which of the three grooves 181, 182, and 183 the hook 16 is hooked into is determined based on the diameter of the main shaft 92.

[0058] In one embodiment, the relative angle of the cover body 2 can be changed in multiple steps with a single touch while the splash guard cover 8 is attached to the main shaft 92 of the brush cutter 9. That is, as described above, the user grasps the cover body 2 with their hand and moves the cover body 2 in the first direction away from the attachment part 1 against the spring force of the coil spring 52, thereby releasing the fixed relative angle of the cover body 2.

[0059] The cover main body 2 is then rotated to change the relative angle, and the spring force of the coil spring 52 is used to move the cover main body 2 in the second direction toward the attachment portion 1, thereby fixing the changed relative angle. The cover main body 2 rotates about an axis (an axis extending left and right in the usage state) that is not parallel to the central axis of the main shaft 92.

[0060] Then, by setting the cover body 2 at an appropriate relative angle and then using the brush cutter 9 to mow the grass, it is possible to effectively prevent grass clippings and other debris from flying towards the user. In particular, when multiple linear cutters 94 are used to mow the grass, the clippings tend to fly over a wide area, but by attaching the scattering protection cover 8 of one embodiment, which is suitable for this type of mowing work, scattering of grass clippings and other debris towards the user is significantly reduced.

[0061] In other words, grass clippings and the like that fly toward the user after cutting are prevented from scattering widely in the surrounding area by hitting the concave curved surface 215 of the cover main body 2. The concave curved surface 215 has multiple recesses 23 distributed thereon, which effectively reduces the force with which the grass clippings bounce back. Furthermore, the provision of a holding surface 217 around the concave curved surface 215 of the cover main body 2 further effectively prevents grass clippings and the like from scattering widely.

[0062] 2. Variations While the present disclosure has been described above based on the embodiments shown in the accompanying drawings, the present disclosure is not limited to the above embodiments. Appropriate design modifications can be made within the intended scope of the present disclosure.

[0063] As an example, the mounting part 1 includes a C-shaped connector 12, a hook 16, and a plurality of catches 18, but is not limited thereto, and may have an inner circumferential surface 125 that presses against the outer circumferential surface 925 of the main shaft 92, and may be configured so that the inner diameter of the inner circumferential surface 125 can be changed in a plurality of stages. The hook 16 and the connector 12 may also be directly connected to each other without using the lever 14.

[0064] Furthermore, the multiple hook portions 18 are configured with three grooves 181, 182, and 183, but each hook portion 18 may have a form other than a groove, and the number of hook portions 18 is not limited to three. When there are two hook portions 18, the inner diameter of inner circumferential surface 125 of connector 12 can be changed in two stages, and when there are four or more hook portions 18, the inner diameter of inner circumferential surface 125 of connector 12 can be changed in four or more stages.

[0065] Furthermore, although a plurality of recesses 23 are provided in the concave curved surface 215 of the cover main body 2, these recesses 23 may not be provided.

[0066] 3. Effects As explained based on the above embodiment and modified examples, the scattering protection cover (8) of the present disclosure is a scattering protection cover (8) to be attached to the main shaft (92) of a brush cutter (9), and includes a mounting part (1) that is attached to the main shaft (92) by clamping a part of the outer peripheral surface (925) of the main shaft (92) in the axial direction, and a cover main body part (2) that is attached to the main shaft (92) via the mounting part (1). The mounting part (1) has an inner peripheral surface (125) that presses against the outer peripheral surface (925) of the main shaft (92), and is configured so that the inner diameter of the inner peripheral surface (125) can be changed in multiple stages.

[0067] Therefore, according to the scattering protection cover (8) of the present disclosure, the inner diameter of the inner peripheral surface (125) of the mounting portion (1) can be changed in multiple stages, so that the scattering protection cover (8) can be easily attached to main shafts (92) of various diameters.

[0068] Furthermore, in the splash guard cover (8) of the present disclosure, the attachment portion (1) includes a deformable connector (12) having an inner peripheral surface (125), a hook (16) attached to the connector (12), and a plurality of hooking portions (18) provided on the connector (12) and configured to selectively hook onto the hook (16).

[0069] Therefore, according to the scattering protection cover (8) of the present disclosure, the inner diameter of the inner peripheral surface (125) of the attachment portion (1) can be easily changed by selecting which of the multiple hooking portions (18) to hook the hook (16) onto.

[0070] In the shatterproof cover (8) of the present disclosure, the attachment portion (1) further includes a lever (14) interposed between the hook (16) and the connector (12). The lever (14) is provided so as to be displaceable relative to the connector (12).

[0071] Therefore, according to the splash guard cover (8) of the present disclosure, the hook (16) can be easily hooked onto any of the multiple hook portions (18) by operating the lever (14), and the hook (16) can be easily removed from the hook portion (18) by operating the lever (14).

[0072] In addition, in the splash guard cover (8) of the present disclosure, the connector (12) is C-shaped and has a first end (121) and a second end (122). A lever (14) is rotatably provided at the first end (121), and a plurality of hooks (18) are provided at the second end (122).

[0073] Therefore, according to the splash guard cover (8) of the present disclosure, the connector (12), lever (14), and multiple hooks (18) are arranged compactly and effectively.

[0074] Furthermore, in the splash guard cover (8) of the present disclosure, the plurality of hook portions (18) are configured by a plurality of grooves (181, 182, 183) positioned side by side.

[0075] Therefore, according to the splash guard cover (8) of the present disclosure, the inner diameter of the inner peripheral surface (125) of the mounting portion (1) can be easily changed by selecting which of the multiple grooves (181, 182, 183) positioned side by side to hook the hook (16) onto.

[0076] The brush cutter (9) of the present disclosure includes the above-described splash protection cover (8) of the present disclosure and a main shaft (92) to which the splash protection cover (8) is attached.

[0077] Therefore, according to the brush cutter (9) of the present disclosure, the inner diameter of the inner peripheral surface (125) of the attachment part (1) can be changed in multiple stages, so that the scattering protection cover (8) can be easily attached in accordance with the diameter of the main shaft (92). [Explanation of symbols]

[0078] 1. Mounting part 12 Connector 125 Inner surface 14 Lever 16 Hook 18 Hook 181 Groove 182 Groove 183 Groove 2 Cover body 8. Splash protection cover 9. Brush cutter 92 Main axis

Claims

1. A splash guard cover attached to the main shaft of a brush cutter, a mounting portion that is mounted on the spindle by clamping a portion of an outer peripheral surface of the spindle in an axial direction; a cover main body portion attached to the main shaft via the mounting portion so as to be positioned to the side of the main shaft, and provided with a fixing portion for hanging a flexible extension cover; a relative angle of the cover body with respect to the mounting portion is changeable around a rotation center axis of the cover body; the mounting portion is a deformable connector having an inner circumferential surface that presses against the outer circumferential surface of the spindle; a hook attached to the connector; a lever interposed between the hook and the connector and provided so as to be displaceable relative to the connector; a plurality of grooves provided in the connector; The hook is selectively hooked into the plurality of grooves depending on the diameter of the spindle, so that the inner diameter of the inner peripheral surface is switched in a plurality of stages, and the spindle can be mounted to correspond to a plurality of diameters of the spindle. Shatterproof cover.

2. the connector is C-shaped and has a first end and a second end; The lever is rotatably provided at the first end, The second end portion is provided with the plurality of grooves. The shatterproof cover of claim 1.

3. The splash protection cover of claim 1 or 2; The main shaft to which the splash protection cover is attached, Brush cutter.

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