JP2022149139A - Brush and working machine - Google Patents

Abstract

To provide a brush which enables the efficient and labor-saving execution of work for weeding, moss removal and the like, which can prevent the fracture and scattering of brush bristles, and which has sufficient strength against a force generated in the case of contact with an object.SOLUTION: A brush 10 comprises a base material 15 that is operationally connected to a motor 6, and a large number of brush bristles 16 that are arranged in the state of being extended from the base material 15. The large number of brush bristles 16 are integrated together by a filler 17 for filling a gap between the brush bristles.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a brush, and more particularly to a brush suitable for weeding, moss removal, and the like. The invention also relates to a working machine comprising said brush.

In places where stone pavements, bricks, tiles, etc. are laid, grass may grow from their joints and crevices. When such weed removal work is performed manually, for example, a hook-shaped weeding tool or sickle is used to perform weeding in a squatting position. Manual weeding is not only inefficient, but also imposes a heavy burden on workers. Therefore, there is a demand for a working machine suitable for weeding work on joints and the like.

In addition, in public places such as parks, moss growing on the road surface is required to be removed in order to avoid the risk of people slipping and falling. In this case as well, it would be convenient to have a work machine that can efficiently and labor-savingly remove moss.

Patent Document 1 describes a joint mower for removing grass growing in the joints of structures such as roads and sidewalks whose surfaces are finished with concrete, blocks, tiles, etc. (Paragraph 0001 of Patent Document 1. reference). This lawn mower has a brush portion, which is rotationally driven by a drive portion, provided at the tip of an operating rod. As an example of the brush portion (Comparative Example 1), in paragraph 0017 of Patent Document 1 and FIG. section is posted.

JP 2012-191856 A

In Patent Document 1, as problems of the conventional brush portion as described above, "In Comparative Example 1, the steel wire was broken and scattered." If it is placed on the ground, the strength against the force generated when it comes into contact with the structure or the stone on the ground is insufficient” (see paragraph 0018 of Patent Document 1).

The present invention has been made in view of the above circumstances, and is a brush that can efficiently and labor-savingly perform weeding and moss removal work, etc., can prevent breakage and scattering of brush bristles, and can be used to remove objects. To provide a brush having sufficient strength against the force generated when it comes into contact with. Another object of the present invention is to provide a working machine having the brush.

In order to solve the above-mentioned problems, a brush according to the present invention comprises a base material operatively connected to a motor, and a large number of bristles extending from the base material. (Claim 1).

According to the brush of the present invention, the bristles are actuated by driving the base material by the prime mover. As a result, weeding, moss removal, and the like can be performed efficiently and labor-savingly.

In the brush of the present invention, a large number of bristles are integrated with a filling material that fills the gaps between the bristles. Therefore, breakage and scattering of the brush bristles can be prevented. In addition, the filler prevents the bristles from deforming and escaping rearward in the direction of movement of the brush when the brush hits the object to be removed. Therefore, sufficient strength can be obtained against the force generated when contacting an object, and cutting performance with the brush is improved. Furthermore, the filler also has the function of protecting the fingers of the operator from the bristles when replacing the working part with the bristles. Due to the effect of protecting the fingers, by applying the present invention to conventionally known bevel brushes, cup brushes and flat brushes, they can be made easier to handle.

In addition, in the present invention, the motion mode of the base material may be rotational motion or reciprocating motion. In the case of rotary motion, it may be rotation about the vertical axis or rotation about the horizontal axis.

As one embodiment, the filler may have heat resistance to withstand frictional heat generated by contact with the ground (Claim 2).

As one embodiment, the filler may have impact resistance that does not break even if it collides with the ground (Claim 3).

As one embodiment, the filler may be formed mainly of a synthetic resin (claim 4).

As one embodiment, the synthetic resin may be a silicone resin (claim 5).

As one embodiment, a gap is formed in the brush portion formed by the large number of bristles and the filler, and the formation of the gap allows the brush portion to perform cutting in a direction in which the brush operates. A mode in which a surface is formed may be employed (Claim 6). In this case, since the cutting surface is formed on the brush portion, the ability to cut the object to be removed with the brush is further improved.

As one embodiment, a work machine may be provided that includes the brush, the prime mover, and an operation member for controlling the position of the brush (Claim 7). According to this work machine, the same effect as the brush can be obtained.

1 is a schematic diagram of an operating rod type brush cutter as an example of a working machine having a brush according to an embodiment of the present invention; FIG. It is the expansion perspective view which looked at the brush in FIG. 1 from diagonally above. It is the expansion perspective view which looked at the brush in FIG. 1 from the diagonally downward direction. It is the schematic of the brush based on other one Embodiment of this invention, (a) is a perspective view of a rotary drum-type brush, (b) is the A arrow directional view of (a). FIG. 5 is a schematic side view of a brush according to another embodiment of the invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

INDUSTRIAL APPLICABILITY The brush according to the present invention is suitable for weeding work in places where stone pavements, bricks, tiles, etc. are laid, and for removing moss on paved surfaces. As shown in FIG. 1, a brush 10 according to one embodiment of the present invention can be used as a replacement part for a normal cutting blade in a known brush cutter as an example of a working machine.

A working machine (weeder) 1 shown in FIG. The power generator 2 includes a prime mover 6 such as an air-cooled two-stroke internal combustion engine. Another example of the prime mover is an electric motor. An operating rod 3 extends forward from the power generation unit 2 . The operating rod 3 is an operating member for controlling the position of the brush 10 by the operator.

As an example, a U-shaped operating handle 4 is arranged on the operating rod 3, and operating members such as an on/off switch 7 and a throttle lever 8 are arranged in the vicinity of one grip portion 4a of the operating handle 4. be. A transmission shaft 9 is inserted through the operation rod 3 and is operatively connected to a brush 10 via a transmission mechanism (not shown) in a gear case 11 disposed at the front end of the operation rod 3. . Rotational power of the prime mover 6 is transmitted to the brush 10 via the transmission shaft 9 and the transmission mechanism inside the gear case 11 . The brush cover 5 is supported by the front end portion 3a of the operating rod 3 and covers the rear of the brush 10. As shown in FIG.

The operator suspends and supports the power generation unit 2 from the shoulder with a suspension belt (not shown) hooked to the suspension metal fitting 12 on the operation rod 3, grasps the operation handle 4, and swings the brush 10 left and right along the ground. Weeding work, moss removing work, etc. can be performed by rotating the brush 10 while moving it. The brush cover 5 protects the feet of the operator from the rotating brush 10 and prevents the removed grass, moss, etc. from scattering toward the operator due to the rotation of the brush 10.例文帳に追加

Instead of the U-shaped operating handle 4, the working machine may have a front grip portion and a rear grip portion directly arranged on the outer circumference of the operating rod 3. FIG. In the case of this operation mode, the narrow peripheral part of the brush can be applied directly into the joint to weed the weeds to a certain depth, and it is possible to flexibly cope with the inclination and unevenness of the weeding work surface. .

Next, the brush 10 of FIG. 1 will be described. As shown in FIGS. 2 and 3, the brush 10 includes a base material 15 operatively connected to the motor 6 and a large number of brush bristles 16 extending from the base material 15. A large number of brush bristles 16 are integrated with a filler 17 that fills the gaps between the bristles 16 . A large number of brush bristles 16 and filler 17 form a brush portion 18 . A mounting hole 15 a for mounting to the drive shaft 13 is provided in the central portion of the base material 15 . Brush 10 is secured to drive shaft 13 within gear case 11 of FIG. 1 and rotates in a plane as drive shaft 13 rotates. As a result, joint weeding, ground moss removal, and the like can be performed efficiently and labor-savingly.

When the outer diameter of the brush 10 is large, the peripheral speed of the brush 10 is increased, so that stones and the like on the ground are easily scattered. Therefore, as an example, it is preferable to set the outer diameter of the brush 10 to about 120 mm and set the maximum peripheral speed to 100 km/h or less in consideration of the speed reduction ratio of the transmission mechanism. By doing so, it is possible to improve work efficiency while preventing stones on the ground surface from being thrown away.

A combination of the substrate 15 and a large number of brush bristles 16 can be produced in the same manner as conventionally known bevel brushes, cup brushes, and flat brushes for scraping off rust and paint. The brush 10 of the present embodiment may be produced by using such a ready-made brush as it is. As a method for attaching a large number of brush bristles 16 to the base material 15, a conventionally known appropriate method such as caulking or bristling can be adopted.

As the brush bristles 16, wires or wire rods that are resistant to weeding and moss removal can be used. As the material of the brush bristles 16, it is preferable to use metal wires such as stainless steel and brass, but synthetic resin wires such as nylon can also be used. The wire diameter of the brush bristles 16 may be appropriately set in consideration of the machinability, strength, etc., and the degree of damage to the tile surface, etc., which is the surface to be worked. Also, the brush bristles 16 may be of a curly type or a straight type.

The brush bristles 16 may extend directly downward from the substrate 15 like a known cup brush, or may extend downward and obliquely outward from the substrate 15 like a known bevel brush. good. In general, the former is suitable for weeding and removing moss on a wide flat surface, and the latter shown in FIGS. 2 and 3 is suitable for weeding and removing moss from corners of concave portions and curved surfaces.

2, the brush 10 of one embodiment is characterized in that a large number of bristles 16 are integrated with a filler 17 that fills the gaps between the bristles 16. As shown in FIG. . The filling material 17 fills the gaps between the brush bristles and holds the large number of brush bristles 16 together. Therefore, breakage and scattering of the brush bristles 16 during work can be prevented. In addition, the filler 17 is arranged so that when the brush 10 hits an object to be removed such as grass or moss, the brush bristles 16 move backward in the operating direction of the brush 10 (the rotating direction of the brush 10 indicated by the arrow in FIG. 2). Deterrence to escape by transforming into. Therefore, sufficient strength can be obtained against the force generated when the brush 10 comes into contact with an object, and the cutting performance of the brush 10 is improved. Furthermore, the filling material 17 also has a function of protecting the fingers of the operator from the brush bristles 16 during the replacement work of the working part. As the brush bristles 16 are worn from the tip side by use, the filler 17 is also worn at the same time, so the cutting ability of the brush 10 continues.

When weeding or removing moss, the brush 10 contacts not only the grass and moss to be removed but also the ground. Therefore, it is preferable that the filler 17 filled in the numerous brush bristles 16 has heat resistance to withstand frictional heat generated by contact with the ground. Moreover, it is preferable that the filler 17 has impact resistance so as not to be damaged even if it collides with the ground. The filler 17 preferably has tenacity and appropriate flexibility.

As the filler 17 having such characteristics, a filler mainly composed of a synthetic resin is preferable, and a filler mainly composed of a silicone resin is particularly preferable. In addition to silicone resin, vinyl chloride resin (PVC) can also be used, and synthetic resins other than the above can also be used by adding additives to impart the above properties. Become.

In the brush 10 of FIGS. 2 and 3, gaps 19 are formed in the brush portion 18 formed by a large number of brush bristles 16 and fillers 17, and the formation of the gaps 19 allows the brush portion 18 to A cutting surface 20 is formed which advances in the direction of movement of the brush 10 . In this case, since the cutting surface 20 is formed on the brush portion 18, the ability to cut the removal target with the brush 10 is further improved. The diameter of the brush part 18 determines the working width and affects the working efficiency, but the presence of the gap 19 in the brush part 18 contributes to the weight reduction of the brush 10 while maintaining the working width, thereby reducing operator fatigue. lead to a reduction in In the illustrated example, four gaps 19 are formed at equal angular intervals in the brush portion 18, but the number of gaps 19 is not limited to this, and can be appropriately set in consideration of workability, durability, and the like.

In the brush 10 shown in FIGS. 2 and 3, the brush portion 18 is divided into four fan-shaped blocks (brush portion blocks) B by the gaps 19 when viewed from above. A lower end portion of each brush portion block B serves as a friction surface 21 extending in the rotating direction of the brush 10 . The friction surface 21 contacts the ground and rotates to scrape off grass and moss growing on the ground. On the other hand, there is a gap 19 between adjacent brush portion blocks B, B, and this gap 19 forms a cutting surface 20 extending in the radial direction of the brush 10 . The cutting surface 20 advances in the rotating direction of the brush 10 to cut grass, moss, etc. on the ground surface. In this way, the brush 10 of FIGS. 2 and 3 has both the friction surface 21 and the cutting surface 20, thereby contributing to improvement in certainty of weeding and moss removal.

1 to 3 show the brush 10 rotating about the vertical axis (drive shaft 13), but in another embodiment, a brush rotating about the horizontal axis is employed. can also That is, it is a rotary drum type brush 40 as shown in FIG.

The brush 40 in FIG. 4 has a horizontal drum 41 that is rotationally driven by the prime mover 6 as a member corresponding to the base material 15 of the brush 10 in FIGS. As shown in an enlarged cross section in FIG. 4(b), a large number of brush bristles 16 are radially arranged on the peripheral surface of the drum 41, and like the brushes of FIGS. A large number of brush bristles 16 are integrated by fillers 17 that fill the gaps. The effect of providing the filler 17 in the many brush bristles 16 is the same as described above.

The brush 40 in FIG. 4 is rotationally driven around a horizontal shaft 42 by the power of the prime mover 6 . As a result, joint weeding, moss removal, and the like can be performed efficiently and labor-savingly. As an example of the transmission mechanism for operatively connecting the prime mover 6 and the drum 41, there can be cited one disclosed in Japanese Utility Model Laid-Open No. 7-30612.

In the brush 40 of FIG. 4, as in the brush 10 of FIGS. 1 to 3, gaps 19 are formed in the brush portion 18 formed by a large number of bristles 16 and the filler 17. As shown in FIG. By disposing the gap 19 , a cutting surface 20 that advances in the direction in which the brush 40 operates is formed on the brush portion 18 . The functions and effects of the gap 19 and the cutting surface 20 are the same as those described above.

In the brush 40 of FIG. 4, as shown in FIG. 4(b), the brush portion 18 is divided into four fan-shaped blocks ( It becomes a form divided into brush part block) B. A circular arc portion of each brush portion block B serves as a friction surface 21 extending in the rotation direction of the brush 40 . The friction surface 21 contacts the ground G and rotates to scrape off grass and moss growing on the ground G. On the other hand, there is a gap 19 between adjacent brush portion blocks B, B, and this gap 19 forms a cutting surface 20 extending in the radial direction of the brush 40 . The cutting surface 20 advances in the rotating direction of the brush 40 to cut grass, moss, etc. on the ground surface. In this manner, the brush 40 of FIG. 4 also has both the friction surface 21 and the cutting surface 20, thereby contributing to the improvement of certainty of weeding and moss removal.

Although the brushes 10 and 40 shown in FIGS. 1 to 4 are rotating brushes, brushes that reciprocate along the ground G may be used as another embodiment. That is, it is a deck brush type brush 50 as shown in FIG.

The brush 50 of FIG. 5 has a rectangular base material 51 reciprocatingly driven by the prime mover 6 as a member corresponding to the base materials 15 and 41 of the brushes 10 and 40 of FIGS. As shown in an enlarged cross section in FIG. 5, a large number of brush bristles 16 are arranged on the lower surface of the substrate 51, and the gaps between the brush bristles 16 are similar to the brushes 10 and 40 shown in FIGS. A large number of brush bristles 16 are integrated by a filling material 17 that satisfies The effect of providing the filler 17 in the many brush bristles 16 is the same as described above.

A base material 51 of the brush shown in FIG. 5 is reciprocatingly driven in the front-rear direction along, for example, a transmission portion case 52 arranged at the front end portion 3a of the operating rod 3 as an operating member. 1, the motor 6 is arranged at the rear end of the operating rod 3. As shown in FIG. Rotational power of the prime mover 6 is transmitted to the transmission portion case 52 via the transmission shaft 9 arranged in the operation rod 3, and is reciprocated back and forth in the transmission portion case 52 by an appropriate power conversion mechanism such as a crank mechanism. and transmitted to the substrate 51 . The brush 50 shown in FIG. As a result, joint weeding, moss removal, and the like can be performed efficiently and labor-savingly.

The brush 50 shown in FIG. 5 also has gaps 19 formed in the brush portion 18 formed by a large number of bristles 16 and the filler 17, like the brushes shown in FIGS. By arranging these gaps 19 , cutting surfaces 20 ( 20 a and 20 b ) are formed on the brush portion 18 so as to advance in the direction in which the brush 50 operates. The functions and effects of the gap 19 and the cutting surface 20 are the same as those described above.

In the brush 50 of FIG. 5, the brush portion 18 is divided into five rectangular blocks (brush portion blocks) B by the gaps 19 . A lower surface of each brush portion block B serves as a friction surface 21 extending in the operating direction (front-rear direction) of the brush 50 . The friction surface 21 scrapes grass and moss growing on the ground G by moving back and forth in contact with the ground G. - 特許庁On the other hand, there is a gap 19 between the brush portion blocks B, B adjacent to each other in the front and rear direction, and this gap 19 forms a cutting surface 20 extending in the left-right direction of the brush 50 (in FIG. 5, the direction perpendicular to the paper surface). The cutting surface 20 advances in the direction in which the brush 50 operates to cut grass, moss, etc. on the ground surface. As described above, the brush shown in FIG. 5 also has both the friction surface 21 and the cutting surface 20, thereby contributing to the improvement of certainty of weeding and moss removal.

Since the brush 50 shown in FIG. 5 switches between the front F and rear R directions of operation, one of the pair of cutting surfaces 20a and 20b located in front of and behind the gap 19 (the forward cutting surface 20a) is The brush 50 functions as the cutting surface 20 when moving forward F, and the other (rearward cutting surface 20b) functions as the cutting surface 20 when the brush 50 moves rearward R.

In the brushes 10, 40, and 50 shown in FIGS. 2 to 5, a first configuration in which a large number of brush bristles 16 are integrated with a filler 17, and a second configuration in which a cutting surface 20 is formed by providing a gap 19 in the brush portion 18. The configurations exhibit synergistic effects when provided together. However, it goes without saying that the first configuration and the second configuration can be implemented independently of each other, in which case each configuration has its own effects.

The brush 10 shown in FIGS. 2 and 3 can be used as a replacement part for the operation rod type brush cutter 1 shown in FIG. It can also be used as a part. This point is the same for the brushes 40 and 50 in FIGS. In this case, the work machine having brushes 10, 40, 50 is a work machine that includes a prime mover for driving the brushes and an operation member for controlling the position of the brushes. In the case of the operation rod type brush cutter 1 as shown in FIG. 1, the operation rod 3 is the operation member, and in the case of a wheeled hand push type grass cutter or a self-propelled grass cutter, a moving means such as wheels is used. The included body frame serves as an operating member.

Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are made within the scope of the present invention. is included in the present invention. In addition, the above-described embodiments can be combined by using each other's techniques unless there is a particular contradiction or problem in the purpose, configuration, or the like.

3 operating member (operating rod)
6 Prime mover 10 Brush 15 Base material 16 Numerous brush bristles 17 Filler 18 Brush part 19 Gap 20 Cutting surface

Claims (7)

A base material operatively connected to a prime mover, and a large number of brush bristles extending from the base material, wherein the large number of brush bristles are integrated by a filler that fills gaps between the brush bristles. brush. 2. The brush of claim 1, wherein said filler has heat resistance to withstand frictional heat generated by contact with the ground. 3. The brush according to claim 1 or 2, wherein said filler has impact resistance so as not to break even if it collides with the ground. 4. The brush according to claim 1, 2 or 3, wherein said filler is mainly made of synthetic resin. 5. The brush according to claim 4, wherein said synthetic resin is a silicone resin. gaps are formed in the brush portion formed by the numerous bristles and the filler, and the formation of the gaps forms a cutting surface that advances in the direction of movement of the brush in the brush portion; A brush according to any one of claims 1 to 5. A work machine comprising the brush according to any one of claims 1 to 6, the prime mover, and an operating member for controlling the position of the brush.

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