CN-116658544-B - Garden tool braking device and garden tool

CN116658544BCN 116658544 BCN116658544 BCN 116658544BCN-116658544-B

Abstract

The invention discloses a garden tool braking device and a garden tool, which solve various defects of the existing garden tool braking device. The invention provides a garden tool braking device which comprises a first rotating part, a second rotating part, an elastic piece and a braking sheet, wherein the second rotating part is arranged on a main shaft in a floating mode, one of the first rotating part and the second rotating part rotates synchronously with the main shaft, the other one of the first rotating part and the second rotating part rotates relative to the main shaft, one of the first rotating part and the second rotating part is provided with a sliding groove extending along the circumferential direction, the other one of the first rotating part and the second rotating part is provided with a transmission part, the sliding groove is provided with a bottom face inclined along the extending direction, at least part of the transmission part is slidably arranged in the sliding groove and slides on the bottom face to enable the second rotating part to be close to or far away from a shell, and when the second rotating part is close to the shell, the second rotating part is contacted with the shell through the braking sheet. In addition, the invention also provides a gardening tool, which comprises the gardening tool braking device.

Inventors

SUN LONG
LU MAOLONG
CHEN GANG
LUO CHANGKAI

Assignees

浙江亚特电器股份有限公司

Dates

Publication Date: 20260512
Application Date: 20230531

Claims (9)

1. A garden tool brake apparatus, comprising: A first rotating member; The second rotating part is arranged between the shell of the gardening tool and the first rotating part and can move along the main shaft; An elastic member pre-tensioned between the housing of the garden tool and the second rotating member to float the second rotating member with respect to the main shaft, and, The brake pad is arranged between the shell of the gardening tool and the second rotating part; one of the first rotating part and the second rotating part rotates synchronously with the main shaft, and the other one of the first rotating part and the second rotating part can rotate relative to the main shaft; One of the first rotating part and the second rotating part is provided with a chute extending along the circumferential direction, and the other one of the first rotating part and the second rotating part is provided with a transmission part; The sliding groove is provided with a bottom surface inclined along the extending direction, and at least part of the transmission part is slidably arranged in the sliding groove and slides on the bottom surface so as to enable the second rotating part to be close to or far away from the shell; the transmission part is provided with a matching surface with the bottom surface.
2. A garden tool brake apparatus, as claimed in claim 1, wherein said mating surface is formed with at least one bead.
3. A garden tool brake apparatus as claimed in claim 1, wherein the angle of circumferential extension of the chute is less than 120 °.
4. A garden tool brake apparatus as claimed in claim 3, wherein the number of said sliding grooves is three, said transmission part corresponds to the number of said sliding grooves, and said sliding grooves are symmetrically distributed on one of said first rotating member and said second rotating member along the circumferential direction.
5. A garden tool brake apparatus, as claimed in claim 1, wherein said first or second rotatable member is driven in rotation by a motor.
6. The garden tool brake apparatus as defined in claim 5, wherein the first rotating member is provided with a rotating shaft portion extending along an axial direction of the main shaft, the main shaft is detachably and fixedly connected with the first rotating member through the rotating shaft portion, the second rotating member is rotatably sleeved on the rotating shaft portion, and the motor drives the second rotating member to rotate, so as to transmit the force to the first rotating member.
7. The garden tool brake apparatus as defined in claim 5, wherein the second rotating member is provided with a rotating shaft portion extending along the axial direction of the main shaft, the second rotating member rotates synchronously with the main shaft through the rotating shaft portion, the main shaft is slidingly connected with the rotating shaft portion, and the motor drives the first rotating member to rotate, thereby transmitting to the second rotating member.
8. A garden tool brake apparatus, as claimed in claim 1, wherein said brake pad is removably mounted to said second rotatable member or housing.
9. A garden tool comprising a housing, a motor, a spindle on which a working assembly is secured, and a garden tool brake apparatus as claimed in any one of claims 1 to 8.

Description

Garden tool braking device and garden tool Technical Field The invention relates to the field of garden tools, in particular to a garden tool for improving a brake device. Background The series excited motor is suitable for application scenes of high load and low rotation speed due to the advantages of large starting torque and easy speed regulation, and is simple in design, low in manufacturing cost and relatively low in price compared with other motors, so that the series excited motor is widely used in garden tools. In particular to a garden tool which adopts a large-sized working mechanism such as an auger or the like or needs a large torque and a rotary working mechanism to work, such as a mower, a snowplow and the like. But the series motor needs to be braked mechanically. The existing garden tools adopting the screw feeder to work, such as mowers, sweeper and the like, and common braking modes include belt tensioning, centrifugal friction rings, ratchet braking and the like. But the belt tensioning braking efficiency is low, the service life of parts is short, the centrifugal friction ring is complex in structure, high in cost and long in braking time, the ratchet braking is poor in universality due to the fact that the transmission shaft strength of the ratchet braking is insufficient and the ratchet braking is more suitable for gear transmission, and fragments generated in the ratchet braking friction process can be left in a gear box to further influence braking of a braking device. Therefore, there is a need in the art for a brake device with high efficiency, simple structure, high strength and high versatility, so as to overcome the shortcomings of the above-mentioned schemes. Disclosure of Invention The invention aims to solve the technical problems of overcoming the defects of the prior art and providing a gardening tool braking device so as to solve the defects in the prior art. In order to achieve the technical object, the invention provides a garden tool braking device, comprising: A first rotating member; The second rotating part is arranged between the shell of the gardening tool and the first rotating part and can move along the main shaft; An elastic member pre-tensioned between the housing of the garden tool and the second rotating member to float the second rotating member with respect to the main shaft, and, The brake pad is arranged between the shell of the gardening tool and the second rotating part; one of the first rotating part and the second rotating part rotates synchronously with the main shaft, and the other one of the first rotating part and the second rotating part can rotate relative to the main shaft; One of the first rotating part and the second rotating part is provided with a chute extending along the circumferential direction, and the other one of the first rotating part and the second rotating part is provided with a transmission part; The sliding groove is provided with a bottom surface inclined along the extending direction, at least part of the transmission part is slidably arranged in the sliding groove and slides on the bottom surface so that the second rotating part is close to or far away from the shell, and when the second rotating part is close to the shell, the second rotating part is contacted with the shell through the brake block. Preferably, the transmission part has a mating surface adapted to the bottom surface. Preferably, at least one convex rib is formed on the matching surface. Preferably, the angle of the sliding groove extending along the circumferential direction is smaller than 120 degrees. Preferably, the number of the sliding grooves is three, the transmission part corresponds to the number of the sliding grooves, and the sliding grooves are symmetrically distributed on one of the first rotating part and the second rotating part along the circumferential direction. Preferably, the first rotating member or the second rotating member is driven to rotate by a motor. Preferably, the first rotating member is provided with a rotating shaft portion extending along an axial direction of the spindle, the spindle is detachably and fixedly connected with the first rotating member through the rotating shaft portion, the second rotating member is rotatably sleeved on the rotating shaft portion, and the motor drives the second rotating member to rotate and further transmits the second rotating member to the first rotating member. Preferably, the second rotating member is provided with a rotating shaft portion extending in an axial direction of the spindle, the second rotating member rotates synchronously with the spindle through the rotating shaft portion, the spindle is slidably connected with the rotating shaft portion, and the motor drives the first rotating member to rotate and further transmits the rotation to the second rotating member. Preferably, the brake pad is detachably disposed on the second rotating member or the housing. The invention also