WO2023197732A1 - 一种园林工具 - Google Patents

一种园林工具 Download PDF

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Publication number
WO2023197732A1
WO2023197732A1 PCT/CN2023/074798 CN2023074798W WO2023197732A1 WO 2023197732 A1 WO2023197732 A1 WO 2023197732A1 CN 2023074798 W CN2023074798 W CN 2023074798W WO 2023197732 A1 WO2023197732 A1 WO 2023197732A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake control
control member
elastic member
shaft
garden tool
Prior art date
Application number
PCT/CN2023/074798
Other languages
English (en)
French (fr)
Inventor
邵灵敏
Original Assignee
浙江白马科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202220886604.0U external-priority patent/CN217790463U/zh
Priority claimed from CN202210414912.8A external-priority patent/CN114788464A/zh
Application filed by 浙江白马科技有限公司 filed Critical 浙江白马科技有限公司
Publication of WO2023197732A1 publication Critical patent/WO2023197732A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00—Forestry
    • A01G23/02—Transplanting, uprooting, felling or delimbing trees
    • A01G23/08—Felling trees
    • A01G23/091—Sawing apparatus specially adapted for felling trees
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/08—Other tools for pruning, branching or delimbing standing trees

Definitions

  • the invention belongs to the technical field of electric tools, and specifically relates to a garden tool.
  • a chain saw is a very commonly used garden tool. During use, the chain saw generally uses a braking device to slow down or stop the motor.
  • electronic brakes and mechanical brakes are usually used in conjunction with each other to brake the garden tools; electronic brakes are only suitable for low-speed rotating garden tools, while mechanical brakes can be used for high-speed rotating garden tools; however, mechanical brakes
  • the brake part uses a V-shaped leaf spring component to provide elasticity. The metal leaf spring offsets the plastic casing. After long-term use, the part of the casing that contacts the leaf spring will wear out. The elasticity of the handle is too small, which can easily cause safety hazards; compare documents
  • the reliability of the mechanical brake in the garden tool is also not good, and the practical environment of the electronic brake has certain limitations; therefore, it is necessary to design a reliable garden tool.
  • the present invention designs a garden tool.
  • the brake control member squeezes and contacts the power part to decelerate or stop the power part, and maintains the braking state or non-braking state through the elastic member. It has simple structure and high reliability.
  • a garden tool including a fuselage.
  • the fuselage is provided with a power part on the prime mover, and the fuselage is provided with a mechanical braking assembly for braking the power part.
  • the mechanical braking assembly includes a braking control part and a position limiting part;
  • the brake control part includes a handle and a first mechanical brake pad, and the handle and the first mechanical brake pad are linked; when the first mechanical brake pad is away from the power part, it is the first position of the brake control part, The second position of the brake control member is when the first mechanical brake pad presses and contacts the power part;
  • the position limiter includes an elastic member, and the position limiter is configured to allow the brake control member to Stay in the first or second position.
  • a limiting portion is provided on the fuselage with respect to the side of the braking control member away from the power part; when the braking control member is in the first position, the mechanical braking component abuts against the limiting portion.
  • the brake control member abuts against the limiting portion, so that the brake control member cannot continue to rotate and is maintained in the first position under the action of the position limiting member.
  • the power part on the prime mover is an outer rotor on the outer rotor motor.
  • it also includes an electronic braking system and a control switch; the control switch is configured to be triggered by the braking control member; the electronic braking system is configured to activate the prime mover when the control switch is triggered. Perform electronic braking.
  • the electronic braking system When the control switch is triggered by the brake control part, the electronic braking system will be activated, and the outer rotor can also be decelerated through the electronic braking system.
  • the fuselage is provided with a first connecting shaft
  • the brake control member is pivotally connected to the fuselage through the first connecting shaft
  • the handle and the first mechanical brake pad are respectively located on the first connecting shaft.
  • Both sides of the shaft; the first end of the elastic member is connected to the fuselage through a first connection structure, and the second end of the elastic member is connected to the brake control member through a second connection structure; the brake control member
  • the first connecting shaft is arranged inside the fuselage, the handle extends toward the outside of the fuselage, and the first mechanical brake pad extends toward the inside of the fuselage.
  • the brake control member is pivotally connected to the fuselage, so that when the handle is rotated, the first mechanical brake pad will be close to or away from the outer rotor; the first end of the elastic member is connected to the fuselage, and the second end of the elastic member is connected to the fuselage. The end is connected to the brake control member, and the length of the elastic member changes when the brake control member switches between the first position and the second position.
  • the second connection structure approaches the power part.
  • the second connection structure is configured to be located between the first connection shaft and the first connection structure; when the brake control member is in the third position, the first connection shaft, the first connection structure The first connection structure and the second connection structure are collinear; and when the brake control member is in the third position, the elastic member is not in Stretched state.
  • the brake control member During the movement of the brake control member from the first position to the second position, the brake control member will pass through the third position.
  • the first connecting shaft, the first connecting mechanism and the second connecting structure are collinear and elastic.
  • the member is always in a compressed state and is compressed the shortest in the third position; the length of the elastic member in the first position or the second position is greater than the length in the third position; when the brake control member is in the third position, the length of the elastic member is Length no greater than its original length and in a compressed state.
  • the first connecting shaft is configured to be located between the first connecting structure and the second connecting structure; when the brake control member is in the third position, the first connecting shaft, the The first connection structure and the second connection structure are collinear; and when the brake control member is in the third position, the elastic member is not in a compressed state.
  • the brake control member During the movement of the brake control member from the first position to the second position, the brake control member will pass through the third position.
  • the first connection mechanism and the second connection structure are collinear, and the elastic member is always in a stretched state. And it is stretched the longest when it is in the third position; the length of the elastic member when it is in the first position or the second position is less than the length in the third position; when the brake control member is in the third position, the length of the elastic member is not less than Its original length is always stretched.
  • the first end of the elastic member is pivotally connected to the fuselage through the first connection structure; the second end of the elastic member is pivotally connected to the brake control member through the second connection structure.
  • the elastic member is configured as a tension spring;
  • the first connection structure includes a first shaft and a sleeve;
  • the first shaft is configured to be fixedly connected to the fuselage;
  • the sleeve is configured It is rotatably sleeved on the first shaft;
  • the first end of the elastic member is relatively fixedly connected to the sleeve;
  • the second connection structure includes a first pin, and the first connection shaft is provided Between the first pin and the first shaft, the second end of the elastic member is pivotally connected to the first pin.
  • the first end of the elastic member When the elastic member is in a non-compressed state, the first end of the elastic member is set as a hook, so that the first end is always hooked on the shaft sleeve through the hook.
  • the elastic member rotates with the brake control member, the elastic member rotates with the brake control member.
  • the first end of the elastic member will never leave the shaft sleeve, so the first end of the elastic member is in a relatively fixed connection with the shaft sleeve; the second end of the elastic member is also set as a hook, and the second end of the elastic member is hooked on the first pin, so that the elastic member will always be in a stretched state.
  • the sleeve is constructed of metallic material.
  • the bushing is preferably made of aluminum or steel.
  • the elastic member is configured as a coil spring; the position limiting member further includes a spring seat, the spring seat is configured to include a receiving cavity, the length of the receiving cavity is not less than the maximum length of the elastic member; One end of the spring seat is hingedly connected to the brake control member through a second pin; the second end of the elastic member is relatively fixedly connected to the spring seat.
  • the width of the receiving cavity is slightly larger than the diameter of the elastic member to prevent excessive radial deformation of the elastic member during movement.
  • the receiving cavity is used to place an elastic member, the second end of the elastic member is in contact with the inner wall of the receiving cavity, and the first end of the elastic member is in contact with the surface of the shaft sleeve; the maximum length of the elastic member refers to the length of the elastic member in the braking control member. The greater of the length of the elastic member when in the first position and the length of the elastic member when the brake control member is in the second position. Therefore, the elastic member will always be in a compressed state when placed in the spring seat.
  • the first connection structure includes a first shaft and a bushing; the first shaft is configured to be fixedly connected to the fuselage; the bushing is configured to be rotatably sleeved on the first On the shaft; the first end of the elastic member is relatively fixedly connected to the shaft sleeve; the shape of the end of the receiving cavity away from the second pin is adapted to the shaft sleeve.
  • the elastic member is installed in the spring seat.
  • the first end of the elastic member is against the surface of the shaft sleeve.
  • the second end of the elastic member is against the position of the receiving cavity away from the installation shaft sleeve.
  • the spring seat is connected to the brake control unit.
  • the member is hinged through the second pin, so that when the elastic member is in a compressed state, the spring seat will squeeze the brake control member; the first end of the elastic member is always close to the surface of the shaft sleeve; the receiving cavity is away from the second pin
  • One end of the arc is set in an arc shape that is adapted to the outer contour of the shaft sleeve, and the inner diameter of the arc is slightly larger than the outer diameter of the shaft sleeve, and the inner diameter of the arc is the same as the width of the receiving cavity.
  • the mechanical brake assembly further includes a second mechanical brake pad; the second mechanical brake pad is configured to be disposed on the brake control member or the position limiting member.
  • the first mechanical brake pad is fixedly connected to the mounting seat, and the second mechanical brake pad is fixedly connected to the spring seat.
  • the first mechanical brake pad and the second mechanical brake pad are arranged staggered up and down.
  • the moving plate decelerates the outer rotor at the same time, so the deceleration effect is better.
  • Figure 1 is a perspective view of the present invention
  • Figure 2 is a schematic diagram of the first mechanical brake pad in the first position of the present invention
  • Figure 3 is a schematic diagram of the first mechanical brake pad in the second position of the present invention.
  • Figure 4 is an exploded view of the present invention
  • Figure 5 is an exploded view of the tension spring according to the present invention.
  • Figure 6 is a diagram of the use state of the tension spring according to the present invention.
  • Figure 7 is a schematic diagram of the brake assembly in the first position when dual brake pads are used in the present invention.
  • Figure 8 is a schematic diagram of the brake assembly in the second position when dual brake pads are used in the present invention.
  • Figure 9 is a usage status diagram of the present invention.
  • Figure 10 is a perspective view of the spring seat.
  • this embodiment 1 discloses a garden tool, which includes a fuselage 1.
  • the fuselage 1 is provided with a power part 2 on a prime mover.
  • the fuselage 1 is provided with a pair of
  • the power part 2 implements a mechanical braking assembly 3 for braking.
  • the mechanical braking assembly 3 includes a braking control member and a position limiting member; the braking control member includes a handle 31 and a first mechanical brake pad 32.
  • the handle 31 and the first mechanical brake pad 32 are linked; when the first mechanical brake pad 32 is far away from the power part 2, it is the first position of the brake control member, and the first mechanical brake pad 32 is pressed into contact
  • the power part 2 is the second position of the brake control member;
  • the position limiter includes an elastic member 4, and the position limiter is configured to maintain the brake control member in the first position or the second position. .
  • a limiter 5 is provided on the fuselage 1 relative to the side of the brake control member away from the power part 2; when the brake control member is in the first position, the mechanical brake assembly 3 abuts against the limiter. 5. The brake control member abuts against the limiting portion 5, so that the brake control member cannot continue to rotate and is maintained in the first position under the action of the position limiting member.
  • the power part 2 on the prime mover is the outer rotor on the outer rotor motor.
  • the prime mover is configured as an electric machine and the power part 2 is an outer rotor on an outer rotor electric machine.
  • the prime mover is configured as an internal combustion engine, and the power part 2 is configured as a driven disk connected to the output shaft.
  • the fuselage 1 is also provided with an electronic braking system and a control switch 6; the control switch 6 is configured to be triggered by the braking control member; the electronic braking system is configured to operate when the control switch 6 electronically brakes the prime mover when triggered.
  • the control switch 6 is triggered by the brake control component, the electronic braking system will be activated, and the outer rotor can also be decelerated through the electronic braking system.
  • the fuselage 1 is provided with a first connecting shaft 8.
  • the brake control member is pivotally connected to the fuselage 1 through the first connecting shaft 8.
  • the handle 31 and the first mechanical brake pad 32 are respectively located on the Both sides of the first connection shaft 8; the first end of the elastic member 4 is connected to the fuselage 1 through a first connection structure, and the second end of the elastic member 4 is connected to the brake through a second connection structure.
  • the control member is connected; when the brake control member moves between the first position and the second position, the distance between the first connection structure and the second connection structure changes.
  • the first connecting shaft 8 is arranged inside the fuselage 1, the handle 31 extends toward the outside of the fuselage 1, and the first mechanical brake pad 32 extends toward the inside of the fuselage 1. extend.
  • the brake control member is pivotally connected to the fuselage 1, so that when the handle 31 is turned, the first mechanical brake pad 32 will be close to or away from the outer rotor; the first end of the elastic member 4 is connected to the fuselage 1, The second end of the elastic member 4 is connected to the brake control member, and the length of the elastic member 4 changes when the brake control member switches between the first position and the second position.
  • the second connection structure approaches the power part 2 .
  • the second connection structure is configured to be between the first connection shaft 8 and the first connection structure; when the brake control member is in the third position, the first connection shaft 8, the first connection structure The first connection structure and the second connection structure are collinear; and when the brake control member is in the third position, the elastic member 4 is not in a stretched state. During the movement of the brake control member from the first position to the second position, the brake control member will pass through the third position. At this time, the first connecting shaft 8, the first connecting mechanism and the second connecting structure are collinear.
  • the elastic member 4 is always in a compressed state and is compressed the shortest in the third position; the length of the elastic member 4 in the first position or the second position is greater than the length in the third position; when the brake control member is in the third position, The length of the elastic member 4 is no longer than its original length and is in a compressed state.
  • the first end of the elastic member 4 is pivotally connected to the fuselage 1 through the first connection structure; the second end of the elastic member 4 is pivotally connected to the brake control member through the second connection structure.
  • the elastic member 4 is configured as a coil spring; the position limiting member also includes a spring seat 35, the spring seat 35 is configured to include a receiving cavity, the length of the receiving cavity is not less than the maximum length of the elastic member 4 ; One end of the spring seat 35 is hingedly connected to the brake control member through a second pin 36; the second end of the elastic member 4 is relatively fixedly connected to the spring seat 35.
  • the width of the receiving cavity is slightly larger than the diameter of the elastic member 4 to prevent excessive radial deformation of the elastic member 4 during movement.
  • the receiving cavity is used to place the elastic member 4.
  • the second end of the elastic member 4 abuts against the inner wall of the receiving cavity, and the first end of the elastic member 4 abuts against the surface of the shaft sleeve 37;
  • the maximum length of the elastic member 4 refers to The greater of the length of the elastic member 4 when the brake control member is in the first position and the length of the elastic member 4 when the brake control member is in the second position. Therefore, when the elastic member 4 is placed in the spring seat 35, it will always be in a compressed state.
  • the first connection structure includes a first shaft 34 and a bushing 37; the first shaft 34 is configured to be fixedly connected to the fuselage 1; the bushing 37 is configured to be rotatably sleeved on the fuselage 1.
  • the elastic member 4 is installed in the spring seat 35. The first end of the elastic member 4 is against the surface of the sleeve 37, and the second end of the elastic member 4 is against the position of the receiving cavity away from the installation sleeve 37.
  • the spring seat 35 and the brake control member are hingedly connected through the second pin 36, so that when the elastic member 4 is in a compressed state, the spring seat 35 will squeeze the brake control member; the first end of the elastic member 4 is always in close contact with The surface of the sleeve 37; the end of the receiving cavity away from the second pin 36 is set to an arc shape that is consistent with the outer contour of the sleeve 37, and the inner diameter of the arc is slightly larger than the outer diameter of the sleeve 37, and the inner diameter of the arc is the same as the outer diameter of the sleeve 37. receive The width of the cavities is the same.
  • the specific working process of this embodiment is as follows.
  • the power part 2 of the garden tool is in a high-speed rotating state during use.
  • the first mechanical brake pad 32 is in the first position, and the mechanical brake assembly 3 is in a non-braking state;
  • the handle 31, the handle 31 and the mounting base 33 rotate synchronously counterclockwise around the first connecting shaft 8; while the handle 31 rotates, the contact protrusion 7 touches the control switch 6, and the control switch 6 disconnects the circuit; when the circuit is disconnected , the power part 2 will continue to rotate under the action of inertia; during the rotation of the handle 31, the first mechanical brake pad 32 will rotate from the third position to the second position, and the first mechanical brake pad 32 will rotate in the third position. In the second position, it will press and contact the power part 2 to decelerate or stop the power part 2.
  • the compression spring 41 in the spring seat 35 is compressed to the shortest position and the elastic force is the largest; pull the handle 31, when the mounting seat 33 and the limiter 5 are squeezed
  • the mounting base 33 cannot rotate further, and the first mechanical braking pad 32 will remain in the first position; when the first mechanical braking pad 32 on the mounting base 33 is in pressing contact with the power part 2, the If a mechanical brake pad 32 cannot continue to rotate and is in the second position, then the mechanical brake assembly 3 is in the braking state; when the first mechanical brake pad 32 is in the first position or the second position, the mounting seat 33 and the spring seat 35 are not in the first position.
  • the handle 31 drives the mounting seat 33 to rotate; therefore, without the action of external force, the compression spring 41 in the spring seat 35 will squeeze the spring seat 35, and the spring seat 35 will squeeze the mounting seat 33, so that the mounting seat 33
  • the first mechanical brake pad 32 is always maintained in the first position or the second position.
  • the power part 2 is connected to the saw chain 10 and drives it to rotate.
  • the saw chain 10 stops rotating when the first mechanical brake pad 32 is in the second position; when the mechanical brake assembly 3 is pulled, the saw chain 10 stops rotating.
  • the saw chain 10 can rotate normally.
  • this embodiment discloses a method of using a tension spring 42 to maintain the first mechanical brake pad 32 in the first position or the second position.
  • the other structures are the same as in Embodiment 1, except that The structure and installation method of the elastic member 4 are different; the elastic member 4 is configured as a tension spring 42; the first connection structure includes a first shaft 34 and a sleeve 37; the first shaft 34 is configured to match the The fuselage 1 is fixedly connected; the sleeve 37 is configured to be rotatably sleeved on the first shaft 34; the first end of the elastic member 4 is relatively fixedly connected to the sleeve 37;
  • the second connection structure includes a first pin 9 , the first connection shaft 8 is provided between the first pin 9 and the first shaft 34 , and the second end of the elastic member 4 is pivotally connected to the first pin 9 .
  • the first end of the elastic member 4 When the elastic member 4 is in a non-compressed state, the first end of the elastic member 4 is set as a hook, so that the first end is always hooked on the sleeve 37 through the hook, and the elastic member 4 rotates with the brake control member. At this time, the first end of the elastic member 4 will never leave the sleeve 37, so the first end of the elastic member 4 and the sleeve 37 are in a relatively fixed connection state; the second end of the elastic member 4 is also set as a hook, and the elastic member 4 is in a relatively fixed state. The second end of the member 4 is hooked on the first pin 9, so that the elastic member 4 will always be in a stretched state.
  • the sleeve 37 is constructed of metallic material.
  • the sleeve 37 is preferably made of aluminum or steel.
  • the working principle of maintaining the first mechanical brake pad 32 in the first position or the second position is as follows.
  • the distance between the first pin 9 and the first shaft 34 changes with the rotation of the handle 31 and is S1.
  • the mounting base 33 and the tension spring 42 are in a straight line.
  • the first connecting shaft 8 is located between the first pin 9 and the first shaft 34, and the first pin 9 and the first shaft 34 are connected.
  • the distance between the first axis 34 is the largest, that is, S1 is the largest, then the stretching amount of the tension spring 42 is the largest; when the mounting base 33 is rotated to be not in a straight line with the tension spring 42, the mounting base 33 will be close to the power part 2 or At the same time, the position of the first pin 9 will be closer to the first shaft 34, so that S1 will become smaller, and finally the stretching amount of the tension spring 42 will become smaller; when the first mechanical brake When the piece 32 switches from the first position or the second position to the third position, the tension spring 42 needs to be stretched by an external force, and the elastic force of the tension spring 42 is overcome by the external force, so that the mounting base 33 and the tension spring 42 can Relative rotation occurs; therefore, the first mechanical brake pad 32 will always maintain the corresponding first position or second position without being affected by external force.
  • this embodiment is provided with a first mechanical brake pad 32 on the mounting base 33 and a second mechanical brake pad on the spring seat 35; other structures are the same as in Embodiment 1.
  • the mounting seat 33 is fixedly connected to the first mechanical brake pad 32.
  • the spring seat 35 is provided with a second mechanical brake pad.
  • the first mechanical brake pad 32 and the second mechanical brake pad are connected along the first connection.
  • the axis where the axis 8 is located is staggered up and down.
  • the specific working process of this embodiment is as follows. Pull the handle 31. When the handle 31 rotates, it will drive the mounting base 33 to rotate.
  • the mounting base 33 and the spring seat 35 are hinged with each other.
  • the mounting base 33 rotates, it will drive the spring seat. 35 rotates; during the rotation of the mounting base 33, the first mechanical brake pad 32 fixedly connected to it will come close to the power part 2, and during the rotation of the spring seat 35, the second mechanical brake pad 32 fixedly connected to it will come close to the power part 2.
  • the first mechanical brake pad 32 and the second mechanical brake pad will squeeze and contact the power part 2 at the same time, increasing the contact area between the power part 2 and the brake control member, so that the braking effect of the brake control member will be improved. better.
  • the present invention drives the first mechanical brake pad close to or away from the power part through the brake control part.
  • the first mechanical brake pad When the first mechanical brake pad is far away from the power part, it is the first position of the brake control part; the first mechanical brake pad When in extrusion contact with the power part, the brake control member is in the second position, at which time the motor rotor will decelerate or stop;
  • the brake control member includes a handle and a first mechanical brake pad, and the handle controls the second
  • the rotation process of a mechanical brake pad is simple, has high reliability, and can stably realize the deceleration of the power part;
  • the mechanical brake assembly also includes a position limiter, the position limiter includes an elastic member, and the position limiter has a stable structure and can be used for a long time The work also produces good force; when the brake control member is not acted upon by external force, the elastic member allows the first mechanical brake pad to always remain in the corresponding first position or second position, which is reliable and stable. Therefore, the present invention deceler

Abstract

一种园林工具，包括机身(1)，机身(1)内设有原动机上的动力部(2)，机身(1)内设有对动力部实现制动的机械制动组件(3)，机械制动组件(3)包括制动控制件和位置限制件；所述制动控制件包括手柄(31)和第一机械制动(32)片，手柄(31)和第一机械制动片(32)联动；第一机械制动片(32)远离动力部(2)时为所述制动控制件的第一位置，第一机械制动片(32)挤压接触动力部(2)时为所述制动控制件的第二位置；所述位置限制件包括弹性件(4)，所述位置限制件被构造为让所述制动控制件维持在第一位置或者第二位置。该园林工具通过制动控制件挤压接触动力部(2)从而让动力部(2)减速或者停机，并通过弹性件(4)维持刹车状态或者非刹车状态，结构简单，可靠性高。

Description

一种园林工具
相关申请交叉引用
本专利申请要求下述两个中国专利申请的优先权：
1、提交日：2022年4月15日；申请号：2022104149128；发明名称：一种园林工具；
2、提交日：2021年4月15日；申请号：2022208866040；发明名称：一种园林工具；
上述申请的全文以引用的方式并入本文中。
技术领域
本发明属于电动工具技术领域，具体涉及一种园林工具。
背景技术
链锯是一种十分常用的园林工具，在使用过程中一般会通过刹车装置让电机减速或者停止转动。在市面上常用的园林工具中，通常会用电子刹车和机械刹车相互配合完成园林工具的刹车；电子刹车只适用低速旋转园林工具上，机械刹车可适用于高速旋转的园林工具上；但是，机械刹车部分使用V型片簧元件提供弹力,金属材质的片簧与塑料材质的外壳相抵,长期使用后外壳上抵接片簧的部分会磨损,手柄的弹力过小,容易造成安全隐患；对比文件中的机械刹车的可靠性也不好，电子刹车实用环境有一定的局限性；因此，需要设计一种可靠的园林工具。
发明内容
本发明针对现有技术中存在的问题，设计了一种园林工具，本发明通过制动控制件挤压接触动力部从而让动力部减速或者停机，并通过弹性件维持刹车状态或者非刹车状态，结构简单，可靠性高。
本发明的发明目的是通过以下技术方案实现的：一种园林工具，包括机身，所 述机身内设有原动机上的动力部，所述机身内设有对动力部实现制动的机械制动组件，所述机械制动组件包括制动控制件和位置限制件；所述制动控制件包括手柄和第一机械制动片，所述手柄和第一机械制动片联动；所述第一机械制动片远离动力部时为所述制动控制件的第一位置，所述第一机械制动片挤压接触动力部时为所述制动控制件的第二位置；所述位置限制件包括弹性件，所述位置限制件被构造为让所述制动控制件维持在第一位置或者第二位置。
作为优选，所述机身上相对于所述制动控制件背离动力部的一侧设有限位部；所述制动控制件处于第一位置时所述机械制动组件抵靠限位部。
制动控制件抵靠在限位部上，这样制动控制件无法继续转动且在位置限制件的作用下会维持在第一位置。
作为优选，原动机上的动力部为外转子电机上的外转子。
作为优选，还包括电子制动系统和控制开关；所述控制开关被构造为可被所述制动控制件触发；所述电子制动系统被构造为在所述控制开关被触发时对原动机进行电子制动。
控制开关被制动控制件触发的同时就会启动电子制动系统，通过电子制动系统也能对外转子进行减速。
作为优选，所述机身设有第一连接轴，所述制动控制件通过第一连接轴与机身枢接，所述手柄与所述第一机械制动片分别位于所述第一连接轴的两侧；所述弹性件的第一端通过第一连接结构与所述机身连接，所述弹性件的第二端通过第二连接结构与所述制动控制件连接；所述制动控制件在所述第一位置和所述第二位置之间运动时，所述第一连接结构与所述第二连接结构之间的距离是变化的。
第一连接轴设置在机身内部，手柄向机身外部延伸，第一机械制动片向机身内部延伸。所述制动控制件与机身枢接，这样转动手柄时所述第一机械制动片就会靠近或者远离外转子；所述弹性件的第一端与机身连接，弹性件的第二端与制动控制件连接，制动控制件在第一位置以及第二位置切换的过程中所述弹性件的长度会发生变化。
作为优选，所述制动控制件从所述第一位置朝所述第二位置移动的过程中，所述第二连接结构朝所述动力部靠近。
作为优选，所述第二连接结构被构造为位于所述第一连接轴与所述第一连接结构之间；当所述制动控制件位于第三位置时，所述第一连接轴、所述第一连接结构和所述第二连接结构共线；且当所述制动控制件位于所述第三位置时，所述弹性件不处于 拉伸状态。
制动控制件从第一位置朝第二位置移动的过程中，所述制动控制件会经过第三位置，此时的第一连接轴、第一连接机构以及第二连接结构共线，弹性件始终处于压缩状态且在第三位置时被压缩的最短；弹性件在第一位置或者第二位置时的长度大于在第三位置的长度；制动控制件在第三位置时，弹性件的长度不大于其原长且处于压缩状态。
作为优选，所述第一连接轴被构造为位于所述第一连接结构和所述第二连接结构之间；当所述制动控制件位于第三位置时，所述第一连接轴、所述第一连接结构和所述第二连接结构共线；且当所述制动控制件位于所述第三位置时，所述弹性件不处于压缩状态。
制动控制件从第一位置朝第二位置移动的过程中，所述制动控制件会经过第三位置，此时第一连接机构与第二连接结构共线，弹性件始终处于拉伸状态且在第三位置时被拉伸的最长；弹性件在第一位置或者第二位置时的长度小于在第三位置的长度；制动控制件在第三位置时，弹性件的长度不小于其原长且始终为拉伸状态。
作为优选，所述弹性件的第一端通过所述第一连接结构与所述机身枢接；所述弹性件的第二端通过所述第二连接结构与所述制动控制件枢接。
作为优选，所述弹性件被构造为拉伸弹簧；所述第一连接结构包括第一轴和轴套；所述第一轴被构造为与所述机身固定连接；所述轴套被构造为可转动地套设在所述第一轴上；所述弹性件的第一端与所述轴套相对固定连接；所述第二连接结构包括第一销轴，所述第一连接轴设置在第一销轴与第一轴之间，所述弹性件的第二端与第一销轴枢接。
当所述弹性件处于不压缩状态时，所述弹性件的第一端设置为勾部，这样第一端通过勾部始终勾在轴套上，弹性件随制动控制件转动时所述弹性件的第一端始终不会离开轴套，因此弹性件的第一端与轴套处于相对固定连接状态；弹性件的第二端也设置为勾部，弹性件的第二端勾在第一销轴上，这样所述弹性件会始终处于拉伸状态。
作为优选，所述轴套被构造为由金属材料制成。所述轴套优选使用铝或钢制成。
作为优选，所述弹性件被构造为螺旋弹簧；所述位置限制件还包括弹簧座，所述弹簧座被构造为包括收容腔，所述收容腔的长度不小于所述弹性件的最大长度；所述弹簧座的一端通过第二销轴与所述制动控制件铰接；弹性件的第二端与所述弹簧座相对固定连接。
所述收容腔的宽度略大于弹性件的直径，用来避免弹性件在运动过程中发生过度的径向形变。所述收容腔用于放置弹性件，弹性件的第二端抵接在收容腔的内壁上，弹性件的第一端抵靠在轴套表面；弹性件的最大长度是指在制动控制件位于第一位置时弹性件的长度和在制动控制件位于第二位置时弹性件的长度中的较大值。因此，弹性件放入弹簧座内会始终处于压缩状态。
作为优选，所述第一连接结构包括第一轴和轴套；所述第一轴被构造为与所述机身固定连接；所述轴套被构造为可转动地套设在所述第一轴上；所述弹性件的第一端与所述轴套相对固定连接；所述收容腔背离所述第二销轴的一端的形状与所述轴套相适配。
所述弹性件安装在弹簧座内，弹性件的第一端抵靠在轴套的表面，弹性件的第二端抵靠在收容腔背离安装轴套的位置，所述弹簧座与制动控制件通过第二销轴铰接，这样弹性件处于压缩状态时所述弹簧座就会挤压制动控制件；所述弹性件的第一端始终紧贴轴套表面；收容腔背离第二销轴的一端设置为与轴套的外轮廓相适应弧形，且该弧形的内径略大于轴套的外径，该弧形的内径与收容腔的宽度相同。
作为优选，所述机械制动组件还包括第二机械制动片；所述第二机械制动片被构造为设置在所述制动控制件上或所述位置限制件上。
所述第一机械制动片固定连接于安装座、第二机械制动片固定连接于弹簧座，所述第一机械制动片与第二机械制动片上下交错设置，通过两个机械制动片对外转子同时减速，这样的减速效果更好。
与现有技术相比，本发明的有益效果将在具体实施方式部分阐述。
附图说明
图1为本发明的立体图；
图2为本发明第一机械制动片处于第一位置示意图；
图3为本发明第一机械制动片处于第二位置示意图；
图4为本发明的爆炸图；
图5为本发明的采用拉伸弹簧的爆炸图；
图6为本发明的采用拉伸弹簧的使用状态图；
图7为本发明采用双刹车片时刹车组件处于第一位置的示意图；
图8为本发明采用双刹车片时刹车组件处于第二位置的示意图。
图9为本发明的使用状态图；
图10为弹簧座的立体图。
具体实施方式
下面结合附图所表示的实施例对本发明作进一步描述：
实施例1
如图1至图10所示，本实施例1公开了一种园林工具，包括机身1，所述机身1内设有原动机上的动力部2，所述机身1内设有对动力部2实现制动的机械制动组件3，所述机械制动组件3包括制动控制件和位置限制件；所述制动控制件包括手柄31和第一机械制动片32，所述手柄31和第一机械制动片32联动；所述第一机械制动片32远离动力部2时为所述制动控制件的第一位置，所述第一机械制动片32挤压接触动力部2时为所述制动控制件的第二位置；所述位置限制件包括弹性件4，所述位置限制件被构造为让所述制动控制件维持在第一位置或者第二位置。
所述机身1上相对于所述制动控制件背离动力部2的一侧设有限位部5；所述制动控制件处于第一位置时所述机械制动组件3抵靠限位部5。制动控制件抵靠在限位部5上，这样制动控制件无法继续转动且在位置限制件的作用下会维持在第一位置。原动机上的动力部2为外转子电机上的外转子。在本实施例中，原动机被构造为电机，动力部2为外转子电机上的外转子。在一些实施例中，原动机被构造为内燃机，动力部2被构造为与输出轴连接当被动盘。所述机身1上还设有电子制动系统和控制开关6；所述控制开关6被构造为可被所述制动控制件触发；所述电子制动系统被构造为在所述控制开关6被触发时对原动机进行电子制动。控制开关6被制动控制件触发的同时就会启动电子制动系统，通过电子制动系统也能对外转子进行减速。
所述机身1设有第一连接轴8，所述制动控制件通过第一连接轴8与机身1枢接，所述手柄31与所述第一机械制动片32分别位于所述第一连接轴8的两侧；所述弹性件4的第一端通过第一连接结构与所述机身1连接，所述弹性件4的第二端通过第二连接结构与所述制动控制件连接；所述制动控制件在所述第一位置和所述第二位置之间运动时，所述第一连接结构与所述第二连接结构之间的距离是变化的。第一连接轴8设置在机身1内部，手柄31向机身1外部延伸，第一机械制动片32向机身1内部 延伸。所述制动控制件与机身1枢接，这样转动手柄31时所述第一机械制动片32就会靠近或者远离外转子；所述弹性件4的第一端与机身1连接，弹性件4的第二端与制动控制件连接，制动控制件在第一位置以及第二位置切换的过程中所述弹性件4的长度会发生变化。所述制动控制件从所述第一位置朝所述第二位置移动的过程中，所述第二连接结构朝所述动力部2靠近。所述第二连接结构被构造为位于所述第一连接轴8与所述第一连接结构之间；当所述制动控制件位于第三位置时，所述第一连接轴8、所述第一连接结构和所述第二连接结构共线；且当所述制动控制件位于所述第三位置时，所述弹性件4不处于拉伸状态。制动控制件从第一位置朝第二位置移动的过程中，所述制动控制件会经过第三位置，此时的第一连接轴8、第一连接机构以及第二连接结构共线，弹性件4始终处于压缩状态且在第三位置时被压缩的最短；弹性件4在第一位置或者第二位置时的长度大于在第三位置的长度；制动控制件在第三位置时，弹性件4的长度不大于其原长且处于压缩状态。
所述弹性件4的第一端通过所述第一连接结构与所述机身1枢接；所述弹性件4的第二端通过所述第二连接结构与所述制动控制件枢接。所述弹性件4被构造为螺旋弹簧；所述位置限制件还包括弹簧座35，所述弹簧座35被构造为包括收容腔，所述收容腔的长度不小于所述弹性件4的最大长度；所述弹簧座35的一端通过第二销轴36与所述制动控制件铰接；弹性件4的第二端与所述弹簧座35相对固定连接。所述收容腔的宽度略大于弹性件4的直径，用来避免弹性件4在运动过程中发生过度的径向形变。所述收容腔用于放置弹性件4，弹性件4的第二端抵接在收容腔的内壁上，弹性件4的第一端抵靠在轴套37表面；弹性件4的最大长度是指在制动控制件位于第一位置时弹性件4的长度和在制动控制件位于第二位置时弹性件4的长度中的较大值。因此，弹性件4放入弹簧座35内会始终处于压缩状态。所述第一连接结构包括第一轴34和轴套37；所述第一轴34被构造为与所述机身1固定连接；所述轴套37被构造为可转动地套设在所述第一轴34上；所述弹性件4的第一端与所述轴套37相对固定连接；所述收容腔背离所述第二销轴36的一端的形状与所述轴套37相适配。所述弹性件4安装在弹簧座35内，弹性件4的第一端抵靠在轴套37的表面，弹性件4的第二端抵靠在收容腔背离安装轴套37的位置，所述弹簧座35与制动控制件通过第二销轴36铰接，这样弹性件4处于压缩状态时所述弹簧座35就会挤压制动控制件；所述弹性件4的第一端始终紧贴轴套37表面；收容腔背离第二销轴36的一端设置为与轴套37的外轮廓相适应弧形，且该弧形的内径略大于轴套37的外径，该弧形的内径与收 容腔的宽度相同。
本实施例的具体工作过程如下，园林工具的动力部2在使用过程中处于高速旋转状态，此时第一机械制动片32处于第一位置，机械制动组件3处于非刹车状态；扳动手柄31，手柄31和安装座33绕第一连接轴8同步逆时针转动；所述手柄31在转动的同时接触凸起7触碰到控制开关6，控制开关6断开电路；在电路断开时，动力部2在惯性的作用下仍会继续转动；手柄31在转动的过程中，第一机械制动片32会从第三位置转动到第二位置，第一机械制动片32在第二位置时会挤压接触动力部2实现对动力部2的减速或者停机。
第一机械制动片32维持在第一位置或者第二位置的工作原理如下，第一连接轴8与第二销轴36的间距始终保持不变且为L1,第二销轴36与第一轴34的间距会发生改变且为L2,第一连接轴8与第一轴34的间距保持不变且为L3；当第一机械制动片32处于第三位置时，此时安装座33和弹簧座35处于同一条直线上，L3＝L1+L2,此时弹簧座35内的压缩弹簧41被压缩到最短的位置，弹力最大；扳动手柄31，当安装座33与限位部5挤压接触时，安装座33无法进一步转动，那么第一机械制动片32就会维持在第一位置；当安装座33上的第一机械制动片32与动力部2挤压接触时，第一机械制动片32无法继续转动处于第二位置，那么机械制动组件3处于刹车状态；当第一机械制动片32处于第一位置或者第二位置时，安装座33与弹簧座35不在同一直接上，此时L3<L1+L2，第二销轴36的位置会远离第一轴34，L2就会变长，安装座33与弹簧座35铰接，安装座33转动过程中会远离第一轴34，同时会带动弹簧座35一起移动，弹簧座35移动的同时弹簧座35内的压缩弹簧41就会伸长且弹性形变量会减小；因为，压缩弹簧41在第一机械制动片32处于第三位置时的弹性形变量是最大的，如果第一机械制动片32要从第一位置或者第二位置往第三位置移动时，这就需要克服压缩弹簧41的弹力才能让手柄31带动安装座33转动；因此，在不受外力的作用下，弹簧座35内的压缩弹簧41会挤压弹簧座35，弹簧座35就会去挤压安装座33，从而让安装座33上的第一机械制动片32始终维持在第一位置或者第二位置。
所述动力部2与锯链10连接且带动其转动，按下机械制动组件3，第一机械制动片32处于第二位置时锯链10停止转动；扳动机械制动组件3，第一机械制动片32处于第一位置时锯链10能正常转动。
实施例2
如图1至图6所示，本实施例公开了一种采用拉伸弹簧42的方式让第一机械制动片32维持在第一位置或者第二位置，其他结构与实施例1相同，只是弹性件4的结构以及安装方式不同；所述弹性件4被构造为拉伸弹簧42；所述第一连接结构包括第一轴34和轴套37；所述第一轴34被构造为与所述机身1固定连接；所述轴套37被构造为可转动地套设在所述第一轴34上；所述弹性件4的第一端与所述轴套37相对固定连接；所述第二连接结构包括第一销轴9，所述第一连接轴8设置在第一销轴9与第一轴34之间，所述弹性件4的第二端与第一销轴9枢接。当所述弹性件4处于不压缩状态时，所述弹性件4的第一端设置为勾部，这样第一端通过勾部始终勾在轴套37上，弹性件4随制动控制件转动时所述弹性件4的第一端始终不会离开轴套37，因此弹性件4的第一端与轴套37处于相对固定连接状态；弹性件4的第二端也设置为勾部，弹性件4的第二端勾在第一销轴9上，这样所述弹性件4会始终处于拉伸状态。所述轴套37被构造为由金属材料制成。所述轴套37优选使用铝或钢制成。
第一机械制动片32维持在第一位置或者第二位置工作原理如下，第一销轴9与第一轴34的间距随着手柄31的转动会发生变化且为S1,当第一机械制动片32处于第三位置时，安装座33与拉伸弹簧42在一条直线上，此时第一连接轴8位于第一销轴9和第一轴34之间，第一销轴9与第一轴34的间距最大，即S1最大，那么拉伸弹簧42的拉伸量最大；当安装座33转动到与拉伸弹簧42不在一条直线上时，所述安装座33会靠近动力部2或者机壳上的限位部5，同时第一销轴9的位置会往第一轴34靠近，这样S1会变小，最终拉伸弹簧42的拉伸量会变小；当第一机械制动片32从第一位置或者第二位置往第三位置切换时，就需要通过外力拉长拉伸弹簧42，通过外力去克服拉伸弹簧42的弹力，这样安装座33和拉伸弹簧42才会发生相对转动；因此，因此第一机械制动片32在不受外力的作用下会始终维持的对应的第一位置或者第二位置。
实施例3
如图7和图8所示，本实施例在安装座33设置了第一机械制动片32，在弹簧座35上设置了第二机械制动片；其他结构和实施1相同。所述安装座33与第一机械制动片32固定连接，所述弹簧座35上设有第二机械制动片，第一机械制动片32和第二机械制动片沿着第一连接轴8所在的轴向上下错开设置。
本实施例的具体工作过程如下，扳动手柄31，手柄31转动的同时带动安装座33转动，所述安装座33与弹簧座35相互铰接，安装座33转动的同时就会带动弹簧座 35转动；安装座33转动的过程中与其固定连接的第一机械制动片32就会靠近动力部2，弹簧座35转动的过程中与其固定连接的第二机械制动片就会靠近动力部2，这样第一机械制动片32和第二机械制动片会同时挤压接触动力部2，增大了动力部2与制动控制件的接触面积，这样制动控制件的刹车效果会更好。
本发明通过制动控制件带动第一机械制动片靠近或者远离动力部，所述第一机械制动片远离动力部时为制动控制件的第一位置；所述第一机械制动片与动力部挤压接触时为所述制动控制件位于第二位置，此时所述电机转子就会减速或者停机；所述制动控制件包括手柄和第一机械制动片，手柄控制第一机械制动片转动的过程简单，可靠性高，能稳定实现动力部减速；所述机械制动组件还包括位置限制件，位置限制件包括弹性件，所述位置限制件结构稳定且长时间工作还会产出良好的作用力；在制动控制件没有受到外力的作用时弹性件让所述第一机械制动片会始终维持在对应的第一位置或者第二位置，可靠且稳定。因此，本发明对园林工具上的动力部减速或者停机，结构简单，可靠性好。
文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。

Claims (14)

  1. 一种园林工具，包括机身，其特征在于，所述机身内设有原动机上的动力部，所述机身内设有对动力部实现制动的机械制动组件，所述机械制动组件包括制动控制件和位置限制件；所述制动控制件包括手柄和第一机械制动片，所述手柄和第一机械制动片联动；所述第一机械制动片远离动力部时为所述制动控制件的第一位置，所述第一机械制动片挤压接触动力部时为所述制动控制件的第二位置；所述位置限制件包括弹性件，所述位置限制件被构造为让所述制动控制件维持在第一位置或者第二位置。
  2. 根据权利要求1所述的园林工具，其特征在于，所述机身上相对于所述制动控制件背离动力部的一侧设有限位部；所述制动控制件处于第一位置时所述机械制动组件抵靠限位部。
  3. 根据权利要求1所述的园林工具，其特征在于，原动机上的动力部为外转子电机上的外转子。
  4. 根据权利要求1所述的园林工具，其特征在于，还包括电子制动系统和控制开关；所述控制开关被构造为可被所述制动控制件触发；所述电子制动系统被构造为在所述控制开关被触发时对原动机进行电子制动。
  5. 根据权利要求1所述的园林工具，其特征在于，所述机身设有第一连接轴，所述制动控制件通过第一连接轴与机身枢接，所述手柄与所述第一机械制动片分别位于所述第一连接轴的两侧；所述弹性件的第一端通过第一连接结构与所述机身连接，所述弹性件的第二端通过第二连接结构与所述制动控制件连接；
    所述制动控制件在所述第一位置和所述第二位置之间运动时，所述第一连接结构与所述第二连接结构之间的距离是变化的。
  6. 根据权利要求5所述的园林工具，其特征在于，所述制动控制件从所述第一位置朝所述第二位置移动的过程中，所述第二连接结构朝所述动力部靠近。
  7. 根据权利要求5所述的园林工具，其特征在于，所述第二连接结构被构造为位于所述第一连接轴与所述第一连接结构之间；
    当所述制动控制件位于第三位置时，所述第一连接轴、所述第一连接结构和所述第二连接结构共线；且当所述制动控制件位于所述第三位置时，所述弹性件不处于拉伸状态。
  8. 根据权利要求5所述的园林工具，其特征在于，所述第一连接轴被构造为位于所述第一连接结构和所述第二连接结构之间；
    当所述制动控制件位于第三位置时，所述第一连接轴、所述第一连接结构和所述第二连接结构共线；且当所述制动控制件位于所述第三位置时，所述弹性件不处于压缩状态。
  9. 根据权利要求7-8任意一项所述的园林工具，其特征在于，所述弹性件的第一端通过所述第一连接结构与所述机身枢接；所述弹性件的第二端通过所述第二连接结构与所述制动控制件枢接。
  10. 根据权利要求9所述的园林工具，其特征在于，所述第一连接结构包括第一轴和轴套；所述第一轴被构造为与所述机身固定连接；所述轴套被构造为可转动地套设在所述第一轴上；所述弹性件的第一端与所述轴套相对固定连接。
  11. 根据权利要求10所述的园林工具，其特征在于，所述轴套被构造为由金属材料制成。
  12. 根据权利要求9所述的园林工具，其特征在于，
    所述弹性件被构造为螺旋弹簧；
    所述位置限制件还包括弹簧座，所述弹簧座被构造为包括收容腔，所述收容腔的长度不小于所述弹性件的最大长度；
    所述弹簧座的一端通过第二销轴与所述制动控制件铰接；弹性件的第二端与所述弹簧座相对固定连接。
  13. 根据权利要求12所述的园林工具，其特征在于，所述第一连接结构包括第一轴和轴套；所述第一轴被构造为与所述机身固定连接；所述轴套被构造为可转动地套设在所述第一轴上；所述弹性件的第一端与所述轴套相对固定连接；
    所述收容腔背离所述第二销轴的一端的形状与所述轴套相适配。
  14. 根据权利要求1所述的园林工具，其特征在于，所述机械制动组件还包括第二机械制动片；所述第二机械制动片被构造为设置在所述制动控制件上或所述位置限制件上。
PCT/CN2023/074798 2022-04-15 2023-02-07 一种园林工具 WO2023197732A1 (zh)

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