Debris protection cover and brush cutter

Abstract

To change an angle of a scattering protective cover according to a user's physique or the use state.SOLUTION: A scattering protective cover 8 includes an installation part 1 installed on a main shaft 92 of a bush cutter 9, a cover body part 2, and an intermediate part 3 for connecting the installation part 1 and the cover body part 2. An angle of the cover body part 2 to the installation part 1 can be changed through the intermediate part 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a splash guard cover and a mower equipped with the same.

Background Art

[0002] A splash guard cover for a mower has been conventionally known (see Patent Document 1, etc.). By attaching this type of splash guard cover to the main shaft of the mower, it is possible to prevent cut grass and small stones (hereinafter referred to as "cut grass, etc.") from splashing towards the user.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the relative angle of the conventional splash guard cover with respect to the main shaft of the mower is constant, it may not be suitable for the physique of the user and the usage situation.

[0005] An object of the present disclosure is to make it possible to change the angle of the splash guard cover according to the physique of the user and the usage situation.

Means for Solving the Problems

[0006] A splash guard cover according to one aspect of the present disclosure is a splash guard cover attached to the main shaft of a mower, and includes a mounting portion attached to the main shaft, a cover main body portion, and an intermediate portion connecting the mounting portion and the cover main body portion. The angle of the cover main body portion with respect to the mounting portion is changeable via the intermediate portion.

[0007] A mower according to one aspect of the present disclosure includes the splash guard cover and the main shaft to which the splash guard cover is attached.

Advantages of the Invention

[0008] The present disclosure has the effect that the angle of the splash protection cover can be changed according to the physique of the user and the usage situation.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Modes for Carrying Out the Invention

[0010] 1. Embodiment 1-1. Overall Structure FIG. 9 shows a state in which a splash protection cover 8 according to an embodiment is mounted on a main shaft 92 of a lawn mower 9.

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

[0012] Inside the main shaft 92, a rotating shaft (not shown in the figure) is inserted. When the rotating shaft is rotated by the drive of the engine 96, the rotation is transmitted, and a plurality of linear cutters 94 are rotationally driven. Each linear cutter 94 is a linear cutter made of a synthetic resin such as nylon, for example. Instead of or in addition to these linear cutters 94, it is also possible to attach a rotary blade such as a chip saw to the first end side in the axial direction of the main shaft 92.

[0013] A shoulder strap 97 is further attached to the main shaft 92. The user can carry the mower 9 while mowing grass by hanging the shoulder strap 97 on the shoulder and holding the handle 98 while swinging the mower 9 left and right.

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

[0015] In the following, each component of the scattering protection cover 8 will be described in more detail.

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

[0017] As shown in FIGS. 1, 6, etc., the connector 12 is a C-shaped member having a smoothly concave inner peripheral surface 125. The connector 12 is made of, for example, a synthetic resin and has elasticity. The inner peripheral surface 125 of the connector 12 is a concave curved surface that is arcuately curved. The inner diameter of the inner peripheral surface 125 of the connector 12 can be changed by the deformation of the connector 12.

[0018] In the splash guard cover 8 of one embodiment, the inner peripheral surface 125 of the connector 12 abuts against a part of the outer peripheral surface 925 (see FIG. 9) in the axial direction of the main shaft 92 and is provided so as to sandwich the part of the outer peripheral surface 925. Thereby, the connector 12 is attached to the main shaft 92.

[0019] The C-shaped connector 12 has a first end portion 121 and a second end portion 122 that are located on opposite sides of each other. Both the first end portion 121 and the second end portion 122 are end portions provided so as to protrude upward in the use state, and in a state where no external force is applied, the first end portion 121 and the second end portion 122 are inclined in a direction approaching each other. A gap 128 that divides the two is provided between the first end portion 121 and the second end portion 122.

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

[0021] A protruding portion 126 is provided at the second end portion 122. A plurality of hooking portions 18 are formed on the protruding portion 126 of the second end portion 122. The direction in which the protruding portion 126 of the second end portion 122 protrudes is the same as the direction in which the protruding portion 123 of the first end portion 121 protrudes. Similar to the protruding portion 123 of the first end portion 121, the protruding portion 126 of the second end portion 122 protrudes away from the gap 128. The two protruding portions 123, 126 located at a distance from each other are parallel to each other. In the use state, the two protruding portions 123, 126 protrude upward. The term "parallel" used in this text is not limited to strict parallelism and also includes cases of approximate parallelism.

[0022] As shown in FIGS. 1, 8, etc., the lever 14 is, for example, a member made of synthetic resin and has a shape in which the short side portion 141 and the long side portion 142 intersect in an L shape. A connecting portion 144 for rotatably connecting to the connecting portion 124 of the connector 12 is formed at the tip portion of the short side portion 141. By fitting the connecting portions 124 and 144 rotatably together, the lever 14 is rotatably connected to the protruding portion 126 of the connector 12 and thus to the first end portion 121. The lever 14 is displaceable with respect to the connector 12.

[0023] The long side portion 142 is a portion for the user to operate the lever, and a warp is provided at its tip portion so that the user can easily hook a finger. The direction in which the tip portion of the long side portion 142 warps is opposite to the direction in which the short side portion 141 is located with respect to the long side portion 142.

[0024] The hook 16 is rotatably connected to a portion 146 of the lever 14 that is away from the connecting portion 144. In the splash guard cover 8 of one embodiment, 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 composed of a wire bent into a trapezoidal shape. Specifically, it includes a linear portion 161 that can be locked to the engaging portion 18, and a pair of extended portions 162 respectively extending from both ends of this portion 161 (see FIG. 2). The pair of extended portions 162 are inclined so as to increase the distance from each other as they are away from the linear portion 161. The tip portions (not shown) of each extended portion 162 are rotatably connected to the portion 146 of the lever 14. In the splash guard cover 8 of one embodiment, the hook 16 is attached to the connector 12 via the lever 14.

[0025] As shown in FIG. 8, the plurality of engaging portions 18 are composed of a plurality of grooves 181, 182, 183. In the splash guard cover 8 of one embodiment, the plurality of grooves 181, 182, 183 are three grooves 181, 182, 183 arranged side by side and are parallel to each other. The three grooves 181, 182, 183 are provided so that the tip portion 161 of the hook 16 can be selectively hooked.

[0026] The direction in which the three grooves 181, 182, 183 open is opposite to the direction in which the first end portion 121 is located with respect to the second end portion 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 located with respect to the protruding portion 126 where 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 bottoms of the first groove 181, the second groove 182, and the third groove 183 and the connecting portion 124 included in the connector 12 are different from each other. Specifically, the distance between the bottom of the first groove 181 and the connecting portion 124 is set to be larger than the distance between the bottom of the second groove 182 and the connecting portion 124. The distance between the bottom of the second groove 182 and the connecting portion 124 is set to be larger than the distance between the bottom of the third groove 183 and the connecting portion 124.

[0029] In the splash protection cover 8 of one embodiment, the inner diameter of the mounting portion 1 (that is, the inner diameter of the elastic connector 12) is configured to switch in multiple stages depending on whether the hook 16 of the mounting portion 1 is hooked on any of the first, second, and third grooves 181, 182, 183. When the hook 16 of the mounting portion 1 is hooked on the first groove 181, due to the geometric relationship of the connector 12, the lever 14, and the hook 16, the connector 12 elastically deforms relatively greatly so as to sandwich the main shaft 92 having a relatively small diameter (for example, a diameter of 24 mm). When the hook 16 is hooked on the second groove 182, the connector 12 elastically deforms so as to sandwich the main shaft 92 having a standard diameter (for example, a diameter of 25 mm). When the hook 16 is hooked on the third groove 183, the connector 12 elastically deforms relatively little so as to sandwich the main shaft 92 having a relatively large diameter (for example, a diameter of 26 mm).

[0030] 1-3. Cover main body As shown in FIG. 1 and the like, the cover main body 2 is a member made of, for example, synthetic resin, and has a shape such as the upper half of a bowl-shaped member cut in half vertically. The cover main body 2 is provided with a receiving surface 21 for receiving cut grass and the like to prevent scattering. The receiving surface 21 is a surface facing the front end side of the main shaft 92 in the use state, in other words, a surface facing the side opposite to the side where the user is located with respect to the cover main body 2 in the use state.

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

[0032] The concave surface 215 is a surface that is recessed rearward (i.e., toward the user side in the usage state). As shown in FIG. 3, the longitudinal section of the concave surface 215 is an arcuate cross-section that is recessed rearward. Also, as shown in FIG. 4, the transverse section of the concave surface 215 is an arcuate cross-section that is recessed rearward. Here, the rearward direction is based on the user in the usage state.

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

[0034] A plurality of depressions 23 for more effectively suppressing the scattering of mowed grass and the like are provided at intervals on the concave surface 215. The plurality of depressions 23 are a large number of depressions 23 that are dispersedly arranged over the entire surface of the concave surface 215.

[0035] The surface on the back side of the receiving surface 21 of the cover main body 2 (i.e., the surface facing the user side in the usage state) is a smoothly bulging surface rearward, and the thickness of the portion of the cover main body 2 where the depressions 23 are provided is thinner than the thickness of the portion of the cover main body 2 where the depressions 23 are not provided (see FIG. 3 etc.).

[0036] Each recessed portion 23 is a circular recess, has a circular opening, and has a circular bottom surface smaller than the opening. Note that the shape of the recessed portion 23 is not limited to this, and it may have other shapes such as an elliptical shape, a polygonal shape, and a shape combined with these. In the splash protection cover 8 of one embodiment, the plurality of recessed portions 23 have the same dimensional shape as each other, but their dimensions may be different from each other, or their shapes may be different from each other. As an example, one or both of the dimensions and shapes may be different between the plurality of recessed portions 23 arranged in the upper region of the concave curved surface 215 and the plurality of recessed portions 23 arranged in the lower region, or between the plurality of recessed portions 23 arranged in the central region of the concave curved surface 215 and the plurality of recessed portions 23 arranged in the peripheral region surrounding the central region.

[0037] Next, the pressing surface 217 will be described. The pressing surface 217 is provided so as to be positioned in front of the concave curved surface 215 (that is, on the side away from the user in the use state) in order to more reliably suppress the scattering of cut grass and the like. The pressing surface 217 has an angle that is further inclined inward than the peripheral portion of the concave curved surface 215. The pressing surface 217 has a convex upward arc-shaped contour.

[0038] Furthermore, in the splash protection cover 8 of one embodiment, a fixing portion 25 for fixing and suspending the flexible extension cover 7 is provided at the lower part of the cover main body portion 2. The fixing portion 25 is an arc-shaped portion that smoothly bulges backward. The portion of the cover main body portion 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 through other portions.

[0039] As long as the fixing portion 25 can fix the upper end portion of the extension cover 7, an appropriate structure can be adopted. However, in order to easily replace the extension cover 7 which is a consumable, a structure for detachably fixing the extension cover 7 is preferably adopted.

[0040] The extension cover 7 is a cover made of a flexible synthetic resin. The extension cover 7 may be transparent or translucent, or may be colored. The extension cover 7 is provided with a plurality of slits 72 that are cut out upward from the lower edge of the extension cover 7. The plurality of slits 72 are each linear and parallel to each other. Each portion of the extension cover 7 partitioned by the plurality of slits 72 constitutes a flexible strip-shaped portion 74. In the splash-proof cover 8 of one embodiment, the lower part of the extension cover 7 (that is, the plurality of strip-shaped portions 74) can be slid on the ground, and splashing of mowed grass and the like can be more reliably suppressed.

[0041] 1-4. Intermediate part 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 "relative angle") can be freely changed via the first intermediate part 31 and the second intermediate part 32.

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

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

[0044] In the middle part 3, the rotation axis 321 of the second middle part 32 is rotatably inserted into the insertion hole 313 of the first middle part 31, and the main body part 311 of the first middle part 31 is rotatably fitted inside the peripheral wall part 323 of the second middle part 32, and the first middle part 31 and the second middle part 32 are relatively rotatably connected.

[0045] In the splash protection cover 8 of one embodiment, the middle part 3 further includes a lock structure for fixing the relative angle of the cover main body part 2, a spring structure for applying a spring force to the cover main body part 2, and a rotation restricting structure for restricting the relative angle of the cover main body part 2 within a predetermined range. Hereinafter, the lock structure, the spring structure, and the rotation restricting structure will be described in detail in order.

[0046] The lock structure includes a first engaging part 41 integrally provided on the side of the mounting part 1 and a second engaging part 42 integrally provided on the side of the cover main body part 2. The first engaging part 41 and the second engaging part 42 are configured to be engageable with each other at a plurality of rotational angles.

[0047] The first engaging part 41 is composed of a plurality of pairs of engaging grooves 411, 412, 413 provided on the outer peripheral edge part of the main body part 311 of the first middle part 31. In the splash protection cover 8 of one embodiment, the plurality of pairs of engaging grooves 411, 412, 413 are three pairs of engaging grooves 411, 412, 413 arranged side by side in the circumferential direction of the main body part 311. More specifically, a pair of first engaging grooves 411 located on opposite sides with respect to the center of the main body part 311 (in other words, the insertion hole 313), a pair of second engaging grooves 412 also located on opposite sides with respect to the center of the main body part 311, and a pair of third engaging grooves 413 located on opposite sides with respect to the center of the main body part 311. A pair of first engaging grooves 411 and a pair of second engaging grooves 412 are adjacent to each other one by one in the circumferential direction, and a pair of second engaging grooves 412 and a pair of third engaging grooves 413 are adjacent to each other one by one in the circumferential direction.

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

[0049] The above locking structure is configured to release the fixation of the 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 part 1 along the rotation center axis of the cover main body 2 (in other words, along the axial direction of the rotation axis 321).

[0050] That is, since all three pairs of engaging grooves 411, 412, and 413 are open in the first direction, if the cover main body 2 is moved in the first direction, the engagement between the pair of engaging protrusions 421 and any one pair among the three pairs of engaging grooves 411, 412, and 413 will be smoothly released. After releasing the engagement of the pair of engaging protrusions 421, if the cover main body 2 is rotated and then moved in a direction opposite to the first direction (hereinafter referred to as "the second direction"), it is possible to change the relative angle of the cover main body 2 and then engage the pair of engaging protrusions 421 with another pair among the three pairs of engaging grooves 411, 412, and 413.

[0051] Next, the spring structure will be described. The spring structure includes a coil spring 52 housed between the first intermediate part 31 and the second intermediate part 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 the through hole of the rotation axis 321 of the second intermediate part 32 and the main body portion 311 of the first intermediate part 31. The spring force applied to the cover main body 2 by the compressed coil spring 52 via the first and second intermediate parts 31 and 32 is a spring force that biases the cover main body 2 in the second direction.

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

[0053] Next, the rotation restricting structure will be described. The rotation restricting structure includes a first rotation restricting portion 61 provided on the first intermediate portion 31 (that is, integrally provided on the side of the mounting portion 1), and a second rotation restricting portion 62 provided on the second intermediate portion 32 (that is, integrally provided on the side of the cover main body 2). The relative angle of the cover main body 2 can be changed within the range where the first rotation restricting portion 61 and the second rotation restricting portion 62 are fitted together.

[0054] The first rotation restricting portion 61 is constituted by 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 main body portion 311 having a circular shape (in other words, centered on the insertion hole 313). The restricting groove 615 is open in the first direction, similar to each of the engaging grooves 411, 412, and 413 of the first engaging portion 41 (see FIG. 6). The dimension of the depth of the restricting groove 615 in the first direction is set to be sufficiently larger than the dimension of the depth of each of the engaging grooves 411, 412, and 413 in the first direction.

[0055] The second rotation restricting portion 62 is constituted by a restricting protrusion 625 located between the rotation axis 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 rotation axis 321 and the peripheral wall portion 323 (in other words, centered on the rotation axis 321). The restricting protrusion 625 protrudes in the same direction as the rotation axis 321 and the peripheral wall portion 323. The protruding amount of the restricting protrusion 625 is set to be smaller than the protruding amount of the rotation axis 321 and larger than the protruding amount of the pair of engaging protrusions 421. The protruding amount here is the protruding amount along the rotation center axis of the cover main body 2.

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

[0057] 1-5. Usage mode To attach the splash guard cover 8 having the above configuration to the main shaft 92 of the mower 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 onto an appropriate one of the three grooves 181, 182, 183. Next, as shown in FIG. 8B, operate the lever 14 in a direction approaching the connector 12, and elastically bend the entire synthetic resin connector 12 via the metal hook 16. As a result, the inner peripheral surface 125 of the connector 12 clamps a part of the outer peripheral surface 925 in the axial direction of the main shaft 92. Which of the three grooves 181, 182, 183 the hook 16 is hooked onto is determined according to the diameter of the main shaft 92.

[0058] In the splash guard cover 8 of one embodiment, the relative angle of the cover main body portion 2 can be changed in multiple steps with one touch while it is attached to the main shaft 92 of the mower 9. That is, as described above, when the user grasps the cover main body portion 2 by hand and moves the cover main body portion 2 in a first direction away from the mounting portion 1 against the spring force of the coil spring 52, the fixing of the relative angle of the cover main body portion 2 is released.

[0059] If the cover main body portion 2 is rotated as it is to change the relative angle and then the cover main body portion 2 is moved in a second direction approaching the mounting portion 1 using the spring force of the coil spring 52, the changed relative angle is fixed. The rotation of the cover main body portion 2 is performed around an axis non-parallel to the central axis of the main shaft 92 (an axis extending left and right in the use state).

[0060] Then, after setting the cover main body 2 at an appropriate relative angle, by performing a mowing operation with the mower 9, it is possible to effectively suppress the scattering of mowed grass and the like toward the user. In particular, when mowing grass using a plurality of linear cutters 94, the mowed grass and the like are characterized by scattering over a wide range. However, since the scattering protection cover 8 of an embodiment suitable for this type of mowing operation is mounted, the scattering of the mowed grass and the like toward the user is significantly suppressed.

[0061] That is, the mowed grass and the like scattered toward the user after cutting are suppressed from widely scattering around by hitting the concave curved surface 215 of the cover main body 2. A plurality of recessed portions 23 are dispersedly arranged on the concave curved surface 215, whereby the momentum when the mowed grass and the like bounce back is effectively reduced. Further, since a suppressing surface 217 is provided around the concave curved surface 215 of the cover main body 2, the wide scattering of the mowed grass and the like is more effectively suppressed.

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

[0063] As an example, the relative angle of the cover main body 2 can be changed stepwise via the intermediate portion 3, but is not limited thereto, and may be configured to be changeable steplessly.

[0064] Also, the fixing of the relative angle of the cover main body 2 can be released by moving the cover main body 2 to the first direction, but it may be provided so that the fixing and release of the relative angle of the cover main body 2 can be switched by other means.

[0065] Further, the lock structure includes a spring structure composed of the coil spring 5, but it may not have this type of spring structure.

[0066] Further, the locking structure is composed of a first engaging portion 41 provided on the side of the mounting portion 1 and a second engaging portion 42 provided on the side of the cover main body portion 2, but it may be composed of other means.

[0067] Further, the intermediate portion 3 includes a rotation restricting structure composed of a first rotation restricting portion 61 and a second rotation restricting portion 62, but the rotation restricting structure may be composed of other means, or it may not be provided with this type of rotation restricting structure.

[0068] Further, a plurality of recessed portions 23 are provided on the concave curved surface 215 of the cover main body portion 2, but it is also possible that these recessed portions 23 are not provided.

[0069] 3. Operational effects As described based on the above embodiments and modifications, the splash protection cover (8) of the present disclosure is a splash protection cover (8) mounted on the main shaft (92) of the mower (9), and includes a mounting portion (1) mounted on the main shaft (92), a cover main body portion (2), and an intermediate portion (3) connecting the mounting portion (1) and the cover main body portion (2). The angle of the cover main body portion (2) with respect to the mounting portion (1) can be freely changed via the intermediate portion (3).

[0070] Therefore, according to the splash protection cover (8) of the present disclosure, it is possible to easily change the angle of the cover main body portion (2) according to the physique of the user and the usage situation.

[0071] Also, in the splash protection cover (8) of the present disclosure, the angle can be freely changed stepwise.

[0072] Therefore, according to the splash protection cover (8) of the present disclosure, it is possible to easily change the angle of the cover main body portion (2) in multiple steps according to the physique of the user and the usage situation.

[0073] In addition, in the splash protection cover (8) of the present disclosure, the middle part (3) includes a locking structure for fixing the angle. The locking structure is configured to release the fixing of the angle by moving the cover main body part (2) in a direction along its rotation central axis.

[0074] Therefore, according to the splash protection cover (8) of the present disclosure, the angle of the cover main body part (2) can be changed, and it is possible to prevent the angle from being unexpectedly changed.

[0075] In addition, in the splash protection cover (8) of the present disclosure, the locking structure further includes a spring structure that applies a spring force to the cover main body part (2). The spring force is a spring force that biases the cover main body part (2) in a direction opposite to the said direction.

[0076] Therefore, according to the splash protection cover (8) of the present disclosure, by moving the cover main body part (2) against the spring force, the angle of the cover main body part (2) can be changed, and the unexpected change of the angle is suppressed by the spring force.

[0077] In addition, in the splash protection cover (8) of the present disclosure, the locking structure includes a first engaging part (41) provided on the mounting part (1) and a second engaging part (42) provided on the cover main body part (2). The first engaging part (41) and the second engaging part (42) are configured to be engageable with each other at a plurality of rotational angles.

[0078] Therefore, according to the splash protection cover (8) of the present disclosure, it is possible to stably prevent the angle of the cover main body part (2) from being unexpectedly changed by the engagement between the first engaging part (41) and the second engaging part (42), and moreover, it is possible to change the angle of the cover main body part (2) by moving the cover main body part (2) to a predetermined direction.

[0079] Further, in the splash protection cover (8) of the present disclosure, the intermediate portion (3) includes a first rotation restricting portion (61) provided on the mounting portion (1) and a second rotation restricting portion (62) provided on the cover main body portion (2). The mounting portion (1) and the cover main body portion (2) can be changed in angle within a range where the first rotation restricting portion (61) and the second rotation restricting portion (62) are fitted together.

[0080] Therefore, according to the splash protection cover (8) of the present disclosure, even when the fixing of the angle is released, the cover main body portion (2) is prevented from rotating too unexpectedly.

[0081] 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.

[0082] Therefore, according to the brush cutter (9) of the present disclosure, it is possible to easily change the angle of the splash protection cover (8) according to the physique of the user and the usage situation.

Explanation of Signs

[0083] 1 Mounting portion 12 Coupling tool 2 Cover main body portion 3 Intermediate portion 41 First engaging portion 42 Second engaging portion 61 First rotation restricting portion 62 Second rotation restricting portion 8 Splash protection cover 9 Brush cutter 92 Main shaft

Claims

1. A scattering prevention cover mounted on the main shaft of a mower, comprising a mounting portion mounted on the main shaft, a cover main body portion, and an intermediate portion connecting the mounting portion and the cover main body portion, wherein the angle of the cover main body portion with respect to the mounting portion can be changed stepwise via the intermediate portion, the intermediate portion includes a locking structure for fixing the angle, and the locking structure is configured to release the fixing of the angle by moving the cover main body portion in a direction along its rotation central axis. Scattering prevention cover.

2. The locking structure further includes a spring structure that applies a spring force to the cover main body portion, and the spring force is a spring force that biases the cover main body portion in a direction opposite to the said direction. The scattering prevention cover according to Claim 1.

3. The locking structure includes a first engaging portion provided on the mounting portion and a second engaging portion provided on the cover main body portion, and the first engaging portion and the second engaging portion are configured to be engageable with each other at a plurality of stages of rotational angles. The scattering prevention cover according to Claim 1 or 2.

4. A scattering prevention cover mounted on the main shaft of a mower, comprising a mounting portion mounted on the main shaft, a cover main body portion, and an intermediate portion connecting the mounting portion and the cover main body portion, wherein the angle of the cover main body portion with respect to the mounting portion can be changed stepwise via the intermediate portion, the intermediate portion includes a first rotation restricting portion provided on the mounting portion and a second rotation restricting portion provided on the cover main body portion, and the mounting portion and the cover main body portion can be changed in angle within a range where the first rotation restricting portion and the second rotation restricting portion fit together. Scattering prevention cover.

5. The mower comprising the scattering prevention cover according to any one of Claims 1 to 4, and the main shaft on which the scattering prevention cover is mounted.

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