CN220123453U

CN220123453U - Lawn power head and lawn machine

Info

Publication number: CN220123453U
Application number: CN202321355745.0U
Authority: CN
Inventors: 陈立
Original assignee: Chongqing Rato Technology Co Ltd
Current assignee: Chongqing Rato Technology Co Ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-12-05
Anticipated expiration: 2033-05-31

Abstract

The utility model provides a lawn power head and a lawn machine. The motor is located first casing, and fixed setting is on the blade disc, and the output shaft of motor stretches into in the blade disc. Air outside the first shell can enter the cutterhead through the third through hole, the second through hole and the first through hole in sequence. The output shaft of the motor is connected with a blade, the blade is positioned below the cutter head, and the blade rotates to drive air flow, so that the first through hole is sucked, and air enters the cutter head through the third through hole, the second through hole and the first through hole in sequence to cool the interior of the lawn power head. The power head of the lawn mower can be reduced in size because the fan is not required to be additionally arranged.

Description

Lawn power head and lawn machine

Technical Field

The utility model relates to the technical field of mowing equipment, in particular to a lawn machine power head and a lawn machine.

Background

The lawn mower is the most commonly used lawn trimming equipment at present, and the power requirement on the lawn mower is higher and higher due to the improvement of the function requirement on the lawn mower, so that the power head of the lawn mower is required to have a heat dissipation structure.

In the prior art, the heat dissipation mode of the lawn power head is mainly active heat dissipation, namely, a fan is arranged in the lawn power head, and forced heat dissipation is carried out through the fan. Such heat dissipation design requires that lawn mower power head have bigger internally mounted space to lead to lawn mower power head's volume bigger, and under the prerequisite that satisfies the quality requirement, the cost can be higher.

Disclosure of Invention

In view of the deficiencies of the prior art, the present utility model provides a lawn mower head and lawn mower that address or at least alleviate one or more of the above-identified and other problems of the prior art.

The utility model provides a lawn power head, which comprises a first shell, a motor and a controller, wherein the lawn power head is arranged on a cutter head, the cutter head is provided with a first through hole, the first shell comprises a first bottom wall, a first side wall and a first top wall, the first bottom wall is provided with a second through hole, and the first side wall and/or the first top wall is provided with a third through hole;

the motor is positioned in the first shell and fixedly arranged on the cutterhead, and an output shaft of the motor extends into the cutterhead;

air outside the first shell can enter the cutterhead through the third through hole, the second through hole and the first through hole in sequence.

Preferably, the motor is arranged in the second shell and is connected with the second shell, and a gap allowing air to pass through is reserved between the outer wall of the motor and the second side wall.

Preferably, the channel comprises at least three fourth through holes arranged along the circumferential direction of the second side wall, and elastic arms used for clamping the motor are arranged in the fourth through holes.

Preferably, the second side wall is provided with at least three limiting parts distributed along the circumferential direction, the limiting parts protrude towards the inner side of the second side wall, and all the limiting parts limit the movable range of the motor along the radial direction in the second shell together.

Preferably, a plurality of clamping seats for installing the controller are arranged on the second top wall.

Preferably, the channel further comprises a fifth through hole provided on the second top wall.

Preferably, a distance is kept between the bottom surface of the controller and the second top wall.

Preferably, the third through holes are provided on the first side wall, and a plurality of the third through holes are provided.

The utility model also provides a lawn mower, which comprises a cutter head and the lawn mower power head.

Preferably, the cutter head is further provided with at least one sixth through hole arranged outside the first through hole, and air outside the first casing can enter the cutter head through the third through hole, the second through hole and the sixth through hole in sequence.

Compared with the prior art, the utility model has the following beneficial effects:

in the technology of the utility model, the output shaft of the motor is connected with the blade, the blade is positioned below the cutter head, and the blade rotates to drive the airflow to form negative pressure, so that the first through hole is pumped, and air enters the cutter head through the third through hole, the second through hole and the first through hole in sequence to cool the interior of the lawn mower power head. The power head of the lawn mower can be reduced in size because the fan is not required to be additionally arranged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a perspective view of a lawn mower head according to an embodiment of the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a perspective view of the second housing and motor of FIG. 2 mated;

fig. 4 is a perspective view of the second housing of fig. 2;

fig. 5 is a perspective view of the second housing of fig. 2;

FIG. 6 is a bottom perspective view of FIG. 4;

FIG. 7 is a top view of a lawn mower head and lawn mower of FIG. 1;

fig. 8 is a cross-sectional view (only cross-sectional view is shown) of the AA side of fig. 7.

Reference numerals:

10. a cutterhead; 11. a first through hole; 12. a sixth through hole;

20. a first housing; 21. a first bottom wall; 211. a second through hole; 22. a first sidewall; 23. a first top wall; 24. a third through hole; 25. a second housing; 251. a second sidewall; 252. a second top wall; 253. a fourth through hole; 254. an elastic arm; 255. a limit part; 256. a fifth through hole;

30. a motor;

40. and a controller.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1 to 8, the present embodiment provides a lawn power head, which includes a first housing 20, a motor 30 and a controller 40, the power head is mounted on a cutterhead 10, the cutterhead 10 has a first through hole 11, the first housing 20 includes a first bottom wall 21, a first side wall 22 and a first top wall 23, a second through hole 211 is provided on the first bottom wall 21, and a third through hole 24 is provided on the first side wall 22 and/or the first top wall 23. The motor 30 is located in the first housing 20 and is fixedly arranged on the cutterhead 10, and an output shaft of the motor 30 extends into the cutterhead 10. Specifically, the output shaft of the motor 30 passes through the second through hole 211 and then extends into the cutterhead 10. Air outside the first housing 20 may enter the cutter head 10 through the third through hole 24, the second through hole 211, and the first through hole 11 in this order.

In this embodiment, the output shaft of the motor 30 is connected with a blade, the blade is located below the cutter head 10, and drives the airflow along with the rotation of the blade to form negative pressure, so as to suck the first through hole 11, and air enters the cutter head 10 through the third through hole 24, the second through hole 211 and the first through hole 11 in sequence, so as to cool the interior of the lawn mower power head. The power head of the lawn mower can be reduced in size because the fan is not required to be additionally arranged.

In one embodiment, the motor 30 is disposed in the second housing 25 and is connected to the second housing 25, a bottom of the second housing 25 is open, the second housing 25 includes a second side wall 251 and a second top wall 252, the second side wall 251 is disposed around a circumference of the second through hole 211, a channel for air to pass through is disposed on the second side wall 251 and/or the second top wall 252, and a gap for air to pass through is provided between an outer wall of the motor 30 and the second side wall 251.

In this embodiment, when the motor 30 drives the blade to rotate, air sequentially enters the cutter head 10 through the third through hole 24, the channel, the gap between the motor 30 and the second side wall 251, the second through hole 211 and the first through hole 11, and the air can cool the motor 30. The gap between the motor 30 and the second sidewall 251 becomes smaller in comparison with the size of the passage, and the air flow rate becomes larger, thereby increasing the heat radiation effect.

In one embodiment, the channel includes at least three fourth through holes 253 disposed along the circumferential direction of the second sidewall 251, and elastic arms 254 for clamping the motor 30 are disposed in the fourth through holes 253.

In this embodiment, at least three through holes can make the motor 30 wrap up evenly when air enters the second housing 25, improving the cooling effect. The elastic arm 254 is used for clamping the motor 30, so that the motor 30 is fixed to a certain extent, and the shaking degree of the motor 30 in the second housing 25 is reduced.

In one embodiment, the second side wall 251 is provided with at least three limiting parts 255 distributed along the circumferential direction, the limiting parts 255 protrude towards the inner side of the second side wall 251, and all the limiting parts 255 jointly limit the radial movable range of the motor 30 in the second housing 25.

In this embodiment, one surface of the plurality of limiting portions 255 facing the motor 30 encloses a cylindrical space, tentatively referred to as a space, one surface of the plurality of elastic arms 254 facing the motor 30 encloses a cylindrical space, tentatively referred to as a space B, and the diameter of the space B is smaller than that of the space a, so that when the motor 30 enters between the three limiting portions 255, the motor 30 can necessarily contact all the elastic arms 254 at the same time, and the elastic arms 254 are pressed and bent after being abutted against the motor 30, and the limiting portions 255 play a role of protecting the elastic arms 254 from being excessively pressed and bent.

In one embodiment, the second top wall 252 has a plurality of sockets for mounting the controller 40.

In this embodiment, the controller 40 is cooled simultaneously during the air flowing in the first housing 20.

In one embodiment, the channel further includes a fifth through hole 256 disposed in the second top wall 252. The fifth through hole 256 formed in the second top wall 252 of the present embodiment can cool the bottom of the controller 40, thereby improving the cooling effect.

In one embodiment, the bottom surface of the controller 40 is spaced from the second top wall 252. The amount of air flowing from the bottom surface of the controller 40 is increased, increasing the cooling effect.

In one embodiment, the third through-holes 24 are provided in the first sidewall 22 and are provided in plurality. Compared with the third through hole 24 formed in the second top wall 252, the third through hole 24 is easy to be blocked by accumulated ash, and the third through hole 24 is reasonably arranged on the first side wall 22.

The present embodiment provides a lawn mower, including a cutterhead 10 and any one of the lawn mower power heads.

In one embodiment, the cutter head 10 further has at least one sixth through hole 12 disposed outside the first through hole 11, and air outside the first housing 20 may further enter the cutter head 10 through the third through hole 24, the second through hole 211 and the sixth through hole 12 in sequence.

In this embodiment, after the sixth through hole 12 is formed, the suction of the air in the first housing 20 can be increased when the blade rotates, so as to increase the heat dissipation effect.

In the description of the present utility model, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. Lawn power head, including first casing (20), motor (30) and controller (40), lawn power head installs on blade disc (10), blade disc (10) have first through-hole (11), its characterized in that:

the first shell (20) comprises a first bottom wall (21), a first side wall (22) and a first top wall (23), a second through hole (211) is formed in the first bottom wall (21), and a third through hole (24) is formed in the first side wall (22) and/or the first top wall (23);

the motor (30) is positioned in the first shell (20) and fixedly arranged on the cutterhead (10), and an output shaft of the motor (30) extends into the cutterhead (10);

air outside the first shell (20) can sequentially enter the cutterhead (10) through the third through hole (24), the second through hole (211) and the first through hole (11).

2. The lawn power head according to claim 1, further comprising a second housing (25) disposed in the first housing (20), wherein a bottom of the second housing (25) is disposed open, the second housing (25) comprises a second side wall (251) and a second top wall (252), the second side wall (251) is disposed around a circumference of the second through hole (211), a channel through which air passes is disposed on the second side wall (251) and/or the second top wall (252), the motor (30) is disposed in the second housing (25) and is connected with the second housing (25), and a gap allowing air to pass is provided between an outer wall of the motor (30) and the second side wall (251).

3. The lawn power head according to claim 2, wherein the channel comprises at least three fourth through holes (253) arranged along the circumference of the second side wall (251), and elastic arms (254) for clamping the motor (30) are arranged in the fourth through holes (253).

4. A lawn power head according to claim 3, characterized in that the second side wall (251) is provided with at least three limit parts (255) distributed along the circumferential direction, the limit parts (255) protrude towards the inner side of the second side wall (251), and all limit parts (255) limit the movable range of the motor (30) along the radial direction in the second housing (25) together.

5. The lawn mower head according to claim 4, wherein a plurality of clamping seats for installing the controller (40) are arranged on the second top wall (252).

6. The lawn mower head according to claim 5, wherein the channel further comprises a fifth through hole (256) provided in the second top wall (252).

7. The lawn mower head according to claim 6, wherein a distance is maintained between a bottom surface of the controller (40) and the second top wall (252).

8. A lawn power head according to any of claims 1-6, characterised in that the third through hole (24) is provided in the first side wall (22) and in number.

9. A lawn mower, characterized by comprising a cutterhead (10) and a lawn mower head according to any of claims 1-8.

10. A lawn mower as claimed in claim 9, wherein said cutterhead (10) further comprises at least one sixth through hole (12) arranged outside said first through hole (11), and air outside said first housing (20) is further allowed to enter said cutterhead (10) through said third through hole (24), said second through hole (211) and said sixth through hole (12) in sequence.