CN110651594B

CN110651594B - Mower

Info

Publication number: CN110651594B
Application number: CN201910577771.XA
Authority: CN
Inventors: 塔那皮帕尔特·阿卡拉威吉特沃恩
Original assignee: Makita Corp
Current assignee: Makita Corp
Priority date: 2018-06-29
Filing date: 2019-06-28
Publication date: 2023-05-05
Anticipated expiration: 2039-06-28
Also published as: JP7077160B2; CN110651594A; JP2020000139A

Abstract

The invention provides a technology capable of easily removing grass in a grass collecting box. The mower comprises: a body having a wheel; a cutter provided to the main body for cutting grass growing on the ground; and a grass collection box detachably attached to the main body, the grass collection box being configured to collect grass cut by the cutter. The grass collection box has a discharge port for discharging the collected grass in a state in which the grass collection box is detached from the body. The main body has a movable cover that closes the discharge port of the grass collection tank when the grass collection tank is attached to the main body.

Description

Mower

Technical Field

The present description relates to a lawn mower.

Background

Patent document 1 discloses a mower. The mower comprises: a body having a wheel; a cutter provided in the main body; and a grass collection box which collects grass cut by the cutter. The grass collection box can be assembled and disassembled relative to the main body, and a user can detach the grass collection box from the main body and remove grass collected in the grass collection box.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2009-118823

Disclosure of Invention

Problems to be solved by the invention

A cover or door for discharging the collected grass can be provided at the grass collection box. According to such a structure, the user can rapidly remove the grass in the grass collection box by opening the cover or the door. However, if a cover or door is provided on the grass collection box, the cover or door may become an obstacle when a user removes the grass from the grass collection box. In the present specification, a technique is provided that can solve or reduce such problems and easily remove grass in a grass collection box.

Solution for solving the problem

Mowing as disclosed in this specification includes: a body having a wheel; a cutter provided to the main body for cutting grass growing on the ground; and a grass collection box detachably attached to the main body, the grass collection box being configured to collect grass cut by the cutter. The grass collection box has a discharge port for discharging the collected grass in a state in which the grass collection box is detached from the body. The main body has a movable cover that closes the discharge port of the grass collection tank in a state where the grass collection tank is attached to the main body.

In the above configuration, the movable cover for closing the discharge port of the grass collection tank is provided not in the grass collection tank but in the main body. When the grass collecting box is detached from the main body, the movable cover is left on the main body. Thus, when the user removes the grass in the grass collection box, the grass collection box is not obstructed by the movable cover. The user can easily remove the grass in the grass collection tank.

Drawings

Fig. 1 is a perspective view showing a mower 10 according to an embodiment.

Fig. 2 is a cross-sectional view showing the internal configuration of the mower 10.

Fig. 3 is a perspective view showing the rear portion of the mower 10, in which the grass collection box 18 is attached to the main body 14 and the movable cover 42 is disposed at the closing position.

Fig. 4 is a perspective view showing the rear portion of the mower 10, wherein the grass collection box 18 is attached to the main body 14, and the movable cover 42 is disposed at an open position.

Fig. 5 is a perspective view showing the rear of the mower 10, in which the grass collection box 18 is detached from the main body 14 and the movable cover 42 is disposed at the open position.

Fig. 6 is a cross-sectional view showing the movable cover 52 closing the cleaning port 50.

Fig. 7 is a cross-sectional view showing the movable cover 52 for opening the cleaning port 50.

Description of the reference numerals

12. A wheel; 14. a main body; 16. a cutter; 18. a grass collecting box; 20. a cutter unit; 22. a handle unit; 24. a grass collecting pipeline; 26. a motor; 30. a handle; 40. a discharge outlet of the grass collecting pipeline; 42. a movable cover; 44. a torsion coil spring; 46. a locking mechanism; 50. a cleaning port; 52. a movable cover.

Detailed Description

In one embodiment, the movable cover may be swingable between a closed position where the discharge port is closed and an open position where the discharge port is opened. However, the connection structure between the main body and the movable cover is not particularly limited. As another embodiment, the movable cover may be slidably connected to the main body between the closed position and the open position.

In one embodiment, the movable cover may be engaged with the grass collection box when the movable cover is in the closed position, and the grass collection box may be prevented from being detached from the main body. Alternatively or additionally, the movable cover may not be engaged with the grass collection box when the movable cover is in the open position, and the grass collection box may be allowed to be detached from the main body. According to this configuration, the user can fix or release the grass collection box to or from the main body by opening/closing only the movable cover.

In one embodiment, the mower may further include: a biasing member that biases the movable cover from the closed position toward the open position; and a locking mechanism that locks the movable cover relative to the grass collection box when the movable cover is in the closed position. According to this configuration, the user can open the movable cover by releasing only the lock of the lock mechanism. In addition, when the movable cover is not correctly locked, the movable cover automatically moves to the open position, and thus the user can be notified that the movable cover is not correctly locked.

In the above embodiment, the lock mechanism may have an unlocking operation portion that is operated by a user to unlock the movable cover and the grass collection box. According to this configuration, the user can unlock the lock mechanism by operating the unlock operation unit, and can easily open the movable cover.

In the above embodiment, the grass collection box may have a handle to be held by a user. In this case, the unlocking operation portion may be provided in the vicinity of the handle or the grip. According to this configuration, the user can unlock the lock mechanism while holding the handle of the grass collection box when the grass collection box is detached from the body.

In one embodiment, the main body may also include a cutter unit provided with a cutter and a handle unit swingably connected to the cutter unit with respect to the cutter unit. In this case, the grass collection box may be detachably attached to the handle unit. With such a configuration, the grass collection box is disposed along the handle unit, and therefore, the grass collection box can be designed to be relatively large along the longitudinal direction of the handle unit.

In the above embodiment, the main body may further include a grass collecting duct for guiding grass cut by the cutter to the grass collecting box. In this case, at least a part of the grass collecting pipe may be provided to the handle unit. According to this structure, grass cut by the cutter can be reliably accommodated in the grass collection box attached to the handle unit.

In the above embodiment, the main body may further include a cleaning port provided at an intermediate position of the grass collecting duct, and a movable cover for opening and closing the cleaning port. In this case, when the grass collection box is attached to the main body, the grass collection box is preferably engaged with the movable cover, and the movable cover is preferably fixed to a position where the cleaning port is closed. Further, it is preferable that when the grass collection box is detached from the main body, engagement between the grass collection box and the movable cover is released, and the movable cover can open the cleaning port. According to this configuration, the user can fix or release the movable cover by attaching and detaching the grass collection box to and from the main body.

[ example ]

Referring to the drawings, an embodiment of a mower 10 is illustrated. The mower 10 is a power plant for gardening, and is mainly used for trimming a lawn. The mower 10 of the present embodiment is a small-sized mower that mainly faces the home, and is required to be easy to handle and maintain for most users. However, the technology disclosed in the present specification is not limited to the home-oriented mower 10, and can be similarly applied to various types of mowers. For example, the mower 10 of the present embodiment is a push mower operated by a user, and as another embodiment, the mower 10 may be a mower capable of autonomous travel at least in part.

As shown in fig. 1 and 2, the mower 10 includes: a main body 14 having a pair of wheels 12; a cutter 16 provided to the main body 14 and used for cutting grass growing on the ground; and a grass collection box 18 that collects grass cut by the cutter 16. The grass collection box 18 is detachably attached to the main body 14 with respect to the main body 14, and the grass collection box 18 can be detached from the main body 14 when a user removes the collected grass. The grass collection box 18 is provided with a handle 19 to be held by a user. Here, the mower 10 of the present embodiment has two wheels 12, but the number of wheels 12 is not limited to two. The body 14 of the mower 10 need only include at least one wheel 12.

The main body 14 includes a cutter unit 20 provided with the cutter 16 and a handle unit 22 swingably connected to the cutter unit 20 with respect to the cutter unit 20. The cutter 16 is installed at the bottom of the cutter unit 20 in opposition to the lawn growing on the ground. As shown in fig. 2, the cutter unit 20 has a motor 26 that drives the cutter 16 and a blower fan 28 that is driven by the motor 26. As an example, the cutter 16 in the present embodiment is configured to have a fixed blade 16a fixed to the cutter unit 20 and a driving blade 16b driven by a motor 26, and the pair of

blades

16a, 16b is used to cut the lawn. However, the structure of the cutter 16 is not particularly limited. The cutter 16 may be a cutter having a linear body such as a nylon cord instead of the gold-based cutter, or a cutter having not only a metallic cutter but also a linear body such as a nylon cord. The motor that drives the cutter 16 is not limited to the motor 26. Instead of the motor 26, the mower 10 may include, for example, an engine as a prime mover for driving the cutter 16, or the mower 10 may include, for example, an engine as a prime mover for driving the cutter 16, in addition to the motor.

The handle unit 22 extends upward from the cutter unit 20. As described above, the handle unit 22 can swing with respect to the cutter unit 20. The pivot of the handle unit 22 is parallel to the rotation axes of the pair of wheels 12. An operation grip 30 to be gripped by a user is provided at the top of the handle unit 22. Typically, a user stands behind the mower 10 and holds the operation handle 30 to operate the mower 10. The operating handle 30 is provided with a trigger switch 32 for activating the motor 26. The trigger switch 32 is electrically connected to the motor 26, and the cutter 16 is driven by supplying electric power to the motor 26 while the trigger switch 32 is operated by the user.

The grass collection box 18 is configured to be detachable from the handle unit 22. The main body 14 is provided with a grass collecting duct 24, and the grass collecting duct 24 guides grass cut by the cutter 16 to the grass collecting box 18 (see fig. 2). Grass collection pipe 24 extends throughout both cutter unit 20 and handle unit 22 and is connected to an upper portion of grass collection tank 18. As described above, the cutter unit 20 has the blower fan 28 driven by the motor 26. The blower fan 28 not only cools the motor 26, but also creates an air flow within the grass-collecting duct 24 that transports the grass. In addition, the specific structure of the grass collecting pipe 24 is not particularly limited. As an example, in the present embodiment, most of the grass collecting pipe 24 is provided to the handle unit 22, and the grass collecting pipe 24 extends along the length direction of the handle unit 22.

As described above, in the mower 10 of the present embodiment, the grass collection box 18 is attached to the handle unit 22. With such a configuration, since the grass collection tank 18 is disposed along the handle unit 22, the grass collection tank 18 can be designed to be relatively large along the longitudinal direction of the handle unit 22. In addition, by swinging the grass collection tank 18 together with the handle unit 22, the grass in the grass collection tank 18 can be flattened.

Next, the structure of the grass collection tank 18 will be described with reference to fig. 3 to 5. The grass collection tank 18 is provided with a discharge port 40, and the discharge port 40 is used for discharging the collected grass in a state where the grass collection tank 18 is detached from the main body 14. The main body 14 is provided with a movable cover 42, and the movable cover 42 is configured to close the discharge port 40 of the grass collection tank 18 when the grass collection tank 18 is attached to the main body 14. According to such a structure, when the grass collection tank 18 is detached from the main body 14, the movable cover 42 remains on the main body 14. Thus, when a user removes grass from the grass collection tank 18, the grass is not obstructed by the movable cover 42. The user can easily remove the grass in the grass collection tank 18.

In addition, the larger the discharge opening 40 of the grass collection tank 18, the more easily the user can remove the grass within the grass collection tank 18. However, when the discharge port 40 of the grass hopper 18 is made large, the movable cover 42 needs to be made large. In this regard, if the movable cover 42 is provided in the grass collection box 18, the movable cover 42 that is large becomes an obstacle, and there is a concern that the workability of the user may be deteriorated instead. In contrast, if the movable cover 42 is provided on the main body 14, the user's operation is not hindered by the movable cover 42 regardless of the size of the movable cover 42. Thus, the discharge opening 40 of the grass collection tank 18 and the movable cover 42 thereof can be designed to be large.

The specific structure of the movable cover 42 is not particularly limited. As an example, in the present embodiment, the movable cover 42 is configured to be swingable between a closed position (see fig. 3) where the discharge port 40 is closed and an open position (see fig. 4 and 5) where the discharge port 40 is opened. When the movable cover 42 moves to the open position, the handle unit 22 contacts the movable cover 42 and functions as a stopper for stabilizing the movable cover 42. In other embodiments, the movable cover 42 may slide between a position where the discharge port 40 is closed and a position where the discharge port is opened, for example.

As shown in fig. 4 and 5, a frame (japanese: a frame) 43 is provided as an example of the movable cover 42. The frame 43 is provided along the periphery of the movable cover 42, and the frame 43 is fitted into the outlet 40 of the grass-collecting tank 18 when the movable cover 42 is in the closed position. Thus, when the movable cover 42 is in the closed position (see fig. 3), the movable cover 42 engages with the grass collection tank 18, and the grass collection tank 18 is prevented from being detached from the main body 14. On the other hand, when the movable cover 42 is in the open position (see fig. 4 and 5), the movable cover 42 is not engaged with the grass collection tank 18, and thus the grass collection tank 18 is allowed to be detached from the main body 14. With this configuration, the user can fix or release the grass collection tank 18 to or from the main body 14 by opening and closing the movable cover 42. Here, the frame 43 of the movable cover 42 is an example of a structure for engaging the movable cover 42 with the grass collecting box 18, and may be modified to have another structure having such a function.

As shown in fig. 3-5, as an example, the mower 10 further includes a torsion coil spring 44 and a locking mechanism 46. The torsion coil spring 44 is disposed coaxially with the pivot shaft of the movable cover 42, and biases the movable cover 42 from the closed position (see fig. 3) toward the open position (fig. 4 and 5). The lock mechanism 46 is configured such that the lock mechanism 46 locks (fixes) the movable cover 42 to the grass collection box 18 when the movable cover 42 is in the closed position. With this configuration, the user can open the movable cover 42 by simply unlocking the locking mechanism 46. Thereby, the fixation of the grass collection tank 18 to the main body 14 is also released. In addition, when the movable cover 42 is not correctly locked, the movable cover 42 automatically moves to the open position, and thus, the user can be notified that the movable cover 42 is not correctly locked. Here, the torsion coil spring 44 is an example of a biasing member for biasing the movable cover 42 from the closed position toward the open position, and the torsion coil spring 44 may be modified to another biasing member having such a function. In this case, the urging member may be a separate member or may be a member (i.e., a portion) formed integrally with the main body 14 or the movable cover 42.

The specific structure of the lock mechanism 46 is not particularly limited. As an example, the locking mechanism 46 in the present embodiment includes a hook portion 46a provided to the movable cover 42 and a hook receiving portion 46b provided to the grass collection tank 18. The hook receiving portion 46b is swingably attached to the grass collection box 18 with respect to the grass collection box 18, and the hook receiving portion 46b can be engaged with and disengaged from the hook portion 46a of the movable cover 42. The hook receiving portion 46b is provided with an unlocking operation portion 46c which is operated by a user integrally with the hook receiving portion 46b. When the user operates the unlocking operation portion 46c, the hook receiving portion 46b swings to release the engagement between the hook portion 46a and the hook receiving portion 46b. That is, the lock of the lock mechanism 46 is released. In this way, the user can unlock the movable cover 42 by the lock mechanism 46 and easily open the movable cover 42 by merely operating the unlock operation portion 46c.

The unlocking operation portion 46c is provided on the handle 19 of the grass collection box 18. With this configuration, the user can directly detach the grass collection box 18 from the main body 14 by operating the unlocking operation unit 46c while holding the handle 19. Here, the specific configuration of the unlocking operation section 46c is not particularly limited. As an example, the unlocking operation portion 46c in the present embodiment is located at the upper end of the handle 19, and can be operated by the thumb of the hand holding the handle 19. As another embodiment, for example, the unlocking operation portion 46c may be a trigger-type operation portion that is operated by the index finger of the hand holding the handle 19.

As shown in fig. 5 and 6, the grass collection tank 18 is provided with a collection port 48 so as to be continuous with the discharge port 40. When the grass collection tank 18 is mounted to the main body 14, the collection port 48 is connected to the grass collection pipe 24. Whereby grass cut by the knife 16 is guided along the grass collecting duct 24 and received in the grass collecting bin 18 from the collection port 48. The collection port 48 is distinguished from the discharge port 40 closed by the movable cover 42, but when a user removes weeds from the grass collection tank 18, the grass in the grass collection tank 18 can be discharged from the collection port 48.

There is a concern that grass, other foreign matter, will become clogged within the grass collection pipe 24. Accordingly, as shown in fig. 6 and 7, the main body 14 is provided with: a cleaning port 50 provided at a middle position of the grass collecting pipe 24; and a movable cover 52 for opening the cleaning port 50 and closing the cleaning port 50. Thus, the user can clean the interior of the grass collecting pipe 24 from the cleaning port 50 by opening the movable cover 52. As an example, the movable cover 52 in the present embodiment has a knob 53 to be operated by a user, and the movable cover 52 is swingably supported on the main body 14. The cleaning port 50 and the movable cover 52 may be provided in either one of the cutter unit 20 and the handle unit 22, or in both of the cutter unit 20 and the handle unit 22.

The movable cover 52 is provided with a 1 st engaging portion 54, the main body 14 is provided with a 2 nd engaging portion 56, and the grass collecting box 18 is provided with a 3 rd engaging portion 58. The 1 st engagement portion 54 is provided at the distal end of the movable cover 52, and when the movable cover 52 is closed, the 1 st engagement portion 54 of the movable cover 52 is adjacent to the 2 nd engagement portion 56 of the main body 14. When the grass collection tank 18 is attached to the main body 14, the 3 rd engaging portion 58 of the grass collection tank 18 is engaged with the 1 st engaging portion 54 and the 2 nd engaging portion 56, and the movable cover 52 is fixed at a position where the cleaning port 50 is closed. On the other hand, when the grass collection tank 18 is detached from the main body 14, the 3 rd engaging portion 58 is disengaged from the 1 st engaging portion 54 and the 2 nd engaging portion 56, and the movable cover 52 is in a state in which the cleaning port 50 can be opened. As described above, in the mower 10 of the present embodiment, when the grass collection tank 18 is attached to the main body 14, the grass collection tank 18 is engaged with the movable cover 52, so that the movable cover 52 is fixed at a position where the cleaning opening 50 is closed. With this configuration, the user can attach and detach the grass collection box 18 to and from the main body 14, thereby fixing the movable cover 52 to the closed position or releasing the fixation.

As an example, when the movable cover 52 is closed, the 1 st engagement portion 54 of the movable cover 52 and the 2 nd engagement portion 56 of the main body 14 are integrated to form one shaft shape. The 3 rd engaging portion 58 of the grass collection box 18 has a concave curved surface that partially surrounds the shaft shape (i.e., the 1 st engaging portion 54 and the 2 nd engaging portion 56). According to this structure, when the grass collection box 18 is attached to and detached from the main body 14, the grass collection box 18 can swing with respect to the main body 14 about the 1 st engagement portion 54 and the 2 nd engagement portion 56, which are formed in shaft shapes, as fulcrums. Thereby, the user can easily attach and detach the grass collection tank 18 to and from the main body 14.

Although a few specific examples have been described in detail above, these are merely examples and do not limit the claims. The technology described in the claims includes a technology obtained by applying various modifications and alterations to the specific examples described above. The technical elements described in the present specification or the drawings exert technical usefulness alone or in various combinations.

Claims

1. A mower, wherein the mower comprises a main body,

the mower comprises: a body having a wheel;

a cutter provided to the main body for cutting grass growing on the ground; and

a grass collection box detachably attached to the main body, the grass collection box being configured to collect grass cut by the cutter,

the grass collection box has a discharge port for discharging the collected grass in a state where the grass collection box is detached from the body,

the main body has: a movable cover that closes the discharge port of the grass collection box in a state where the grass collection box is attached to the main body; a cutter unit provided with the cutter; and a handle unit swingably connected to the cutter unit with respect to the cutter unit, the movable cover being swingably connected to the main body between a closing position where the discharge port is closed and an opening position where the discharge port is opened,

the grass collecting box can be detachably arranged on the handle unit,

when the movable cover moves to the open position, the handle unit contacts the movable cover and functions as a stopper for stabilizing the movable cover.

2. The mower of claim 1, wherein,

when the movable cover is at the blocking position, the movable cover is clamped with the grass collecting box, the grass collecting box is prevented from being detached from the main body,

when the movable cover is in the open position, the movable cover is not engaged with the grass collection box, allowing the grass collection box to be detached from the main body.

3. The mower according to claim 1 or 2, wherein,

the mower further comprises:

a biasing member that biases the movable cover from the closed position toward the open position; and

and a locking mechanism that locks the movable cover with respect to the grass collection box when the movable cover is in the closed position.

4. A mower according to claim 3, wherein,

the locking mechanism has an unlocking operation part which is operated by a user in order to unlock the movable cover and the grass collection box.

5. The mower of claim 4 wherein

The grass collection box is provided with a handle which is held by a user,

the unlocking operation portion is provided at or near the handle.

6. The mower according to claim 1 or 2, wherein,

the main body is provided with a grass collecting pipeline which guides grass cut by the cutter to the grass collecting box,

at least a part of the grass collecting pipeline is arranged on the handle unit.

7. The mower of claim 6, wherein,

the main body is also provided with a cleaning opening arranged at the middle position of the grass collecting pipeline and a movable cover for opening the cleaning opening and closing the cleaning opening,

when the grass collecting box is mounted on the main body, the grass collecting box is clamped with the movable cover, the movable cover is fixed at a position for closing the cleaning opening,

when the grass collection box is detached from the main body, the engagement between the grass collection box and the movable cover is released, and the movable cover can open the cleaning opening.