CN216437979U

CN216437979U - Rotation type low noise lawn trimmer

Info

Publication number: CN216437979U
Application number: CN202122876435.0U
Authority: CN
Inventors: 冯彦京; 周建宾; 徐小凤; 李翠玲; 林晓敏
Original assignee: Guangdong Longguangqiling City Service Co ltd
Current assignee: Guangdong Longguangqiling City Service Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-06
Anticipated expiration: 2031-11-22

Abstract

The application discloses rotation type low noise lawn mower relates to the lawn mowing field, which comprises a carriage body, the bottom fixed mounting of automobile body has first casing, first casing is the box structure that the bottom surface does not seal, the top fixed mounting of first casing has the motor, the top output end fixed mounting of motor has the driving gear, the inside of first casing is provided with the pivot, the pivot activity is worn to establish in the interior roof center department of first casing, the pivot is located the week side fixed mounting at first casing top and is had the driven gear with driving gear engaged with. This application can drive pivot and saw bit through rotating the screw rod and rise and descend, because driven gear's thickness is greater than the thickness of driving gear, has solved some rotation type lawn mower when adjusting the height of saw bit, need drive saw bit and motor and move together, leads to the comparatively hard problem of operation to improve rotation type lawn mower's work efficiency.

Description

Rotation type low noise lawn trimmer

Technical Field

The application relates to the field of lawn trimming, in particular to a rotary low-noise lawn trimmer.

Background

In the greening engineering, a lawn trimmer is often used for trimming the lawn so as to ensure the attractive and neat lawn.

The rotary lawn trimmer trims the lawn through the saw blade rotating at a high speed, the saw blade is connected with the motor through the rotating shaft, and when the height of the saw blade is adjusted, some rotary lawn trimmers need to drive the saw blade and the motor to move together, so that the operation is laborious, and therefore, the rotary low-noise lawn trimmer is necessary to be provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

In order to solve some rotation type lawn mower when adjusting the height of saw bit, need drive saw bit and motor and move together, lead to the comparatively hard problem of operation, this application provides a rotation type low noise lawn mower.

The application provides a rotation type low noise lawn trimmer adopts following technical scheme:

the utility model provides a rotation type low noise lawn trimmer, includes the automobile body, the bottom fixed mounting of automobile body has first casing, first casing is the box structure that the bottom surface does not seal, the top fixed mounting of first casing has the motor, the top output fixed mounting of motor has the driving gear, the inside of first casing is provided with the pivot, the pivot activity is worn to establish in the interior roof center department of first casing, the week side fixed mounting that the pivot is located first casing top has the driven gear who meshes with the driving gear mutually, and the thickness of driven gear is greater than the thickness of driving gear, the bottom fixed mounting of pivot has a plurality of saw bits that are circumference array distribution, the top of pivot is rotated and is connected with the screw rod, the top of first casing still fixed mounting has the second casing, the second casing is the box structure that the bottom surface does not seal, the screw rod penetrates through the inner top wall of the second shell and is in threaded connection with the inner top wall of the second shell.

Optionally, damping fins are bonded to both the top surface and the bottom surface of the saw blade.

Optionally, a plurality of strip-shaped grass feeding holes are formed in the two sides of the first shell, and the strip-shaped grass feeding holes are evenly distributed.

Optionally, sound-absorbing cotton is bonded to both the inner wall of the first shell and the inner wall of the second shell.

Optionally, a pushing handle is fixedly mounted on one side of the top of the vehicle body.

Optionally, a sliding bearing is fixedly mounted on the inner top wall of the first housing, and the rotating shaft is arranged in the sliding bearing in a penetrating manner.

Optionally, a knob is fixedly mounted at the top of the screw rod.

Optionally, the motor, the driving gear and the driven gear are all accommodated in the second casing.

To sum up, the present application includes the following beneficial effects:

the utility model adopts the motor, the driving gear, the driven gear, the rotating shaft, the mutual cooperation between the saw blade and the screw rod, the rotating shaft and the saw blade can be driven to ascend and descend by rotating the screw rod, because the thickness of the driven gear is larger than that of the driving gear, the driven gear can still be meshed with the driving gear within a certain range, the motor is not required to be driven to move when the saw blade rotates, the problem that the operation is more laborious due to the fact that the saw blade and the motor need to be driven to move together when the height of the saw blade is adjusted by some rotary lawn trimmers is solved, the damping sheet can reduce the vibration when the saw blade rotates so as to reduce the noise generated when the saw blade rotates, the sound generated by the saw blade and air friction, the sound generated by the driving gear and the driven gear, the sound generated by the rotating shaft and the first shell are generated inside the first sound absorption shell and the second shell, and the cotton can absorb a part of the sound, thereby achieving the purpose of noise reduction.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a schematic view of the internal structure of the first and second housings of the present application;

FIG. 3 is an enlarged view at A of FIG. 2 of the present application;

fig. 4 is a top view of the internal structure of the first housing of the present application.

Description of reference numerals: 1. a vehicle body; 2. a first housing; 21. strip-shaped grass inlet holes; 22. sound-absorbing cotton; 3. a second housing; 4. a pushing handle; 5. a saw blade; 51. a rotating shaft; 511. a driven gear; 512. a sliding bearing; 52. a damping fin; 6. a motor; 61. a driving gear; 7. a screw.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

Referring to fig. 1, the present application discloses a rotary low-noise lawn trimmer, which includes a vehicle body 1, wherein a first housing 2 is fixedly mounted at the bottom of the vehicle body 1, the first housing 2 is a box structure with an unsealed bottom surface, and when the vehicle body 1 travels, the bottom surface of the first housing 2 has a proper distance from the ground. One side of the top of the vehicle body 1 is fixedly provided with a pushing hand 4 which is convenient for an operator to push the lawn trimmer.

Referring to fig. 2-3, a rotating shaft 51 is disposed inside the first housing 2, the rotating shaft 51 is vertically disposed and movably penetrates through the center of the inner top wall of the first housing 2, a sliding bearing 512 for reducing friction is fixedly mounted on the inner top wall of the first housing 2, and the rotating shaft 51 penetrates through the sliding bearing 512, so that the rotating shaft 51 can rotate and can also slide up and down in the vertical direction.

Referring to fig. 2 and 4, a plurality of saw blades 5 distributed in a circumferential array are fixedly installed at the bottom of the rotating shaft 51, and when the rotating shaft 51 rotates, the saw blades 5 can be driven to rotate, so as to trim the lawn.

Referring to fig. 2-3, a motor 6 for providing a driving force is fixedly mounted at the top of the first housing 2, a driving gear 61 is fixedly mounted at an output end of the top of the motor 6, the motor 6 can drive the driving gear 61 to rotate when rotating, a driven gear 511 engaged with the driving gear 61 is fixedly mounted on the peripheral side of the rotating shaft 51 at the top of the first housing 2, and the driving gear 61 can drive the rotating shaft 51 to rotate through the driven gear 511, and the thickness of the driven gear 511 is greater than that of the driving gear 61, so that when the rotating shaft 51 slides up and down in the vertical direction, the driven gear 511 can still be engaged with the driving gear 61.

Referring to fig. 2-3, a screw 7 is rotatably connected to the top of the rotating shaft 51, the screw 7 and the rotating shaft 51 are located in the same vertical direction, a second housing 3 is further fixedly mounted at the top of the first housing 2, the second housing 3 is a box structure with an unsealed bottom surface, the screw 7 penetrates through an inner top wall of the second housing 3 and is in threaded connection with the inner top wall of the second housing 3, and further the rotating shaft 51 can be driven to move up and down by rotating the screw 7, i.e., the saw blade 5 is driven to move up and down, a knob which is convenient for an operator to rotate the screw 7 is fixedly mounted at the top of the screw 7, and the motor 6, the driving gear 61 and the driven gear 511 are all accommodated inside the second housing 3, so that the motor 6, the driving gear 61 and the driven gear 511 are not exposed outside, and a protection effect is achieved.

Referring to fig. 2 and 4, the damping plates 52 are adhered to the top and bottom surfaces of the saw blade 5, the damping plates 52 can reduce the vibration of the saw blade 5 during rotation to reduce the noise generated during rotation of the saw blade 5, the sound absorption cotton 22 is adhered on the inner wall of the first shell 2 and the inner wall of the second shell 3, the sound generated by the friction between the saw blade 5 and the air, the sound generated by the driving gear 61 and the driven gear 511, and the sound generated by the rotating shaft 51 and the first shell 2 are generated inside the first shell 2 and the second shell 3, the sound absorption cotton 22 can absorb part of the sound, thereby achieving the purpose of reducing noise, a plurality of strip-shaped grass inlet holes 21 are respectively arranged on both sides of the first shell 2, the strip-shaped grass inlet holes 21 are uniformly distributed, when the lawn trimmer moves, the first shell 2 can not obstruct the grass body, and the grass body to be trimmed can enter the first shell 2 from the strip-shaped grass inlet 21.

The application of a rotation type low noise lawn trimmer's implementation principle does: the motor 6 is started, the motor 6 drives the saw blade 5 to rotate through the driving gear 61, the driven gear 511 and the rotating shaft 51, the lawn is trimmed, when the height of the saw blade 5 needs to be adjusted, the rotating screw 7 can drive the rotating shaft 51 and the saw blade 5 to ascend and descend, the driven gear 511 can still be meshed with the driving gear 61 within a certain range due to the fact that the thickness of the driven gear 511 is larger than that of the driving gear 61, and the motor 6 does not need to be driven to move together when the saw blade 5 rotates.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A rotation type low noise lawn trimmer, includes automobile body (1), its characterized in that: the bottom fixed mounting of automobile body (1) has first casing (2), first casing (2) are the box structure that the bottom surface does not seal, the top fixed mounting of first casing (2) has motor (6), the top output fixed mounting of motor (6) has driving gear (61), the inside of first casing (2) is provided with pivot (51), the interior roof center department at first casing (2) is worn to establish in the activity of pivot (51), the week side fixed mounting that pivot (51) are located first casing (2) top has driven gear (511) with driving gear (61) engaged with, and the thickness of driven gear (511) is greater than the thickness of driving gear (61), the bottom fixed mounting of pivot (51) has a plurality of saw bit (5) that distribute for the circumference array, the top of pivot (51) is rotated and is connected with screw rod (7), the top of first casing (2) still fixed mounting have second casing (3), second casing (3) are the box structure that the bottom surface does not seal, screw rod (7) run through the interior roof of second casing (3) and with the interior roof threaded connection of second casing (3).

2. A rotary low noise lawn trimmer according to claim 1, wherein: damping sheets (52) are bonded on the top surface and the bottom surface of the saw blade (5).

3. A rotary low noise lawn trimmer according to claim 1, wherein: a plurality of strip grass feeding holes (21) are formed in the two sides of the first shell (2) and are evenly distributed, and the strip grass feeding holes (21) are formed in the two sides of the first shell.

4. A rotary low noise lawn trimmer according to claim 1, wherein: and sound absorption cotton (22) is bonded on the inner walls of the first shell (2) and the second shell (3).

5. A rotary low noise lawn trimmer according to claim 1, wherein: a pushing handle (4) is fixedly arranged on one side of the top of the vehicle body (1).

6. A rotary low noise lawn trimmer according to claim 1, wherein: the inner top wall of the first shell (2) is fixedly provided with a sliding bearing (512), and the rotating shaft (51) is arranged in the sliding bearing (512) in a penetrating mode.

7. A rotary low noise lawn trimmer according to claim 1, wherein: and a knob is fixedly arranged at the top of the screw rod (7).

8. A rotary low noise lawn trimmer according to claim 1, wherein: the motor (6), the driving gear (61) and the driven gear (511) are all accommodated in the second shell (3).