WO2011097833A1 - 一种剪刀机改进结构 - Google Patents
一种剪刀机改进结构 Download PDFInfo
- Publication number
- WO2011097833A1 WO2011097833A1 PCT/CN2010/070783 CN2010070783W WO2011097833A1 WO 2011097833 A1 WO2011097833 A1 WO 2011097833A1 CN 2010070783 W CN2010070783 W CN 2010070783W WO 2011097833 A1 WO2011097833 A1 WO 2011097833A1
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- WO
- WIPO (PCT)
- Prior art keywords
- torsion spring
- blade
- assembly
- transmission assembly
- casing
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B15/00—Hand-held shears with motor-driven blades
-
- 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
- A01G3/02—Secateurs; Flower or fruit shears
- A01G3/033—Secateurs; Flower or fruit shears having motor-driven blades
- A01G3/037—Secateurs; Flower or fruit shears having motor-driven blades the driving means being an electric motor
Definitions
- the present invention relates to a garden tool, and more particularly to a scissors machine for trimming branches, shrubs, and the like.
- a scissor machine is a commonly used garden tool for trimming branches, shrubs, etc., compared with a conventional manually operated scissors, with a scissors machine for trimming, labor intensity is greatly reduced, efficiency is improved, with greening As the degree increases, the scissors machine will become an indispensable garden tool.
- the rotation and braking of most scissors blades need to be realized by the motor reversing, the operation is inconvenient, the energy consumption is large, and more importantly, the output power of the motor.
- the problem to be solved by the present invention is to provide a scissors machine which is simple in structure, compact, high in transmission efficiency, and high in output power.
- a scissor machine improved structure including a machine a casing, a motor disposed in the casing, and a trigger disposed on the casing, wherein the motor drives the blade assembly at the front end of the casing through the transmission mechanism
- the transmission mechanism includes an active transmission component and the blade assembly connected to the motor a driven driven transmission assembly
- the active transmission assembly and the driven transmission assembly are connected by a torsion spring of a spiral structure
- the torsion spring simultaneously holds the top of the active transmission assembly and the tail of the driven transmission assembly to realize the active transmission assembly
- the interlocking rotation of the driven transmission component and the torsion spring also has a braking mechanism in the casing, and the braking mechanism is loosened in the rotation direction of the torsion spring when the torsion spring rotates with the driving transmission component
- the driving assembly realizes braking
- the trigger controls the braking mechanism to be locked or not locked by the connecting mechanism.
- the active transmission assembly includes a bridge shaft for connecting a rotating shaft of the motor, and a shaft sleeve is fixed to the top of the bridge shaft;
- the driven transmission assembly includes an output shaft, and a crank is disposed at the top of the output shaft.
- the mechanism is connected to the blade assembly, and the bottom of the output shaft is provided with a cylindrical connecting portion that abuts against the sleeve, and the torsion spring is simultaneously hung on the outer wall of the sleeve and the connecting portion.
- the bottom surface of the connecting portion is provided with a positioning protrusion, and the positioning protrusion is inserted into the sleeve hole of the sleeve to realize the active insertion and assembly of the active transmission component and the driven transmission component, thereby ensuring the active transmission component and
- the driven transmission assembly has good coaxiality when it is rotated in series, which is also beneficial to the improvement of transmission efficiency.
- the sleeve hole of the sleeve is provided with an annular step, a screw is screwed to the bottom of the positioning protrusion, and a limit circular table is arranged at the bottom of the screw, and the annular step is inserted in the limit circular table and the protruding column
- An annular gap is formed between the bottom surfaces, and a plurality of balls are arranged around the annular step and the limiting circular table. The balls form a bearing structure with the annular step and the limiting circular table.
- the above structure not only prevents the axial gap from becoming large after the connection portion between the sleeve and the output shaft is detached during the violent movement, thereby causing the torsion spring to be deformed, and also reducing the friction between the sleeve and the connecting portion during movement, and improving the transmission efficiency.
- the brake mechanism includes a brake block, and a protrusion portion I for locking a torsion spring is disposed on a left side of the top of the brake block, and a protrusion for connecting the connection mechanism at a top right side of the brake block is disposed.
- Part II, brake block, The convex portion I and the convex portion are integrally formed, and the bottom of the brake block is elastically connected to the casing through a torsion spring II, and the torsion spring II has a downward elastic tensioning force to return the brake block. .
- the trigger comprises a turntable transferred to the casing and a rotating handle integrated with the turntable
- the connecting mechanism comprises a connecting piece
- the top of the connecting piece is transferred to the turntable of the trigger by a torsion spring III
- the bottom of the connecting piece is provided with a hook portion I which is fastened to the convex portion of the brake block, and the rotating handle rotates downward to move the rotating plate to move upward, and the hook portion I abuts the convex portion II Pulling the brake block up and away from the clamping position of the torsion spring; the torsion spring III has a downward pulling force to return the connecting piece.
- a limiting mechanism is further disposed between the trigger and the connecting mechanism, the limiting mechanism includes a hook portion II disposed at a middle portion of the connecting piece, and a limiting pin is disposed on the casing above the hook portion II, The limit pin catches the hook portion during the rise of the connecting piece, and pushes the connecting piece to rotate outward to disengage the hook portion I from the boss portion II, thereby realizing the reset of the brake block.
- the blade assembly includes a blade housing disposed at a front end of the casing, a stationary blade fixed in the blade housing, and a movable blade transferred to the stationary blade, and the tail portion of the movable blade is provided with a hook Connect the crank mechanism.
- the blade housing is assembled by the left and right sub-cases by fasteners to facilitate blade replacement.
- crank mechanism includes an eccentric block disposed on the top of the output shaft and driven to rotate by the output shaft, the long axis eccentric head of the eccentric block is transferred with a hook plate, and the other end of the hook plate is provided with a hook The hole is used for hooking the hook of the tail of the moving blade, and the rotation of the eccentric block drives the hook plate to move back and forth to the left and right to drive the moving blade to make a cutting motion around the adapter.
- the present invention divides the transmission mechanism in the scissors machine into an active transmission assembly and a driven transmission assembly, and the torsion spring connects the active transmission assembly and the driven transmission assembly through the tightness or separation of the torsion spring and the active transmission assembly.
- the motor Realize the transmission and braking of the scissors machine, the motor always runs in one direction, minus The current consumption is reduced, so that the output power is increased, the shearing torque of the scissors machine is greatly improved, and the thicker branches can be trimmed; and the invention also has the advantages of compact internal structure and convenient blade replacement.
- Figure 1 is a schematic view of the internal structure of the present invention
- Figure 2 is an enlarged view of A in Figure 1;
- Figure 3 is a schematic view showing the connection structure of the driving transmission assembly, the driven transmission assembly and the blade assembly of the present invention
- Figure 4 is an enlarged view of the portion B in Figure 3;
- FIG. 5 is a schematic view showing the internal structure of the blade assembly of the present invention. 1 to 4, an improved structure of a scissors machine according to the present invention includes a casing 1, a motor 2 disposed in the casing 1, and a trigger 7 disposed on the casing 1, and the motor 2 is driven.
- the mechanism drives the blade assembly 5 at the front end of the casing 1,
- the transmission mechanism includes a drive transmission assembly 3 coupled to the motor 2, and a driven transmission assembly 4 coupled to the blade assembly 5, the drive transmission assembly 3 and the driven transmission assembly 4 is connected by a torsion spring 6 of a spiral structure, and the torsion spring 6 simultaneously holds the top of the active transmission assembly 3 and the tail of the driven transmission assembly 4 to realize the active transmission assembly 3, the driven transmission assembly 4, and the torsion spring 6
- a braking mechanism 8 is also disposed in the casing 1 , and the braking mechanism 8 is locked in the rotating direction of the torsion spring to release the active transmission component 3 when the torsion spring 6 rotates with the driving transmission component 3 .
- the trigger 7 controls the brake mechanism 8 to be locked or not locked by the connecting mechanism 9.
- the drive assembly 3 includes a bridge shaft 30 for connecting the rotating shaft of the motor 2, and the top of the bridge shaft is fixed
- the driven transmission assembly 4 includes an output shaft 40.
- the top of the output shaft is provided with a crank mechanism for connecting the blade assembly 5, and the bottom of the output shaft 40 is matched with the sleeve 31.
- the cylindrical connecting portion 41, the torsion spring is simultaneously hung on the outer wall of the sleeve and the connecting portion; the bottom surface of the connecting portion is provided with a positioning protrusion 411, and the positioning protruding rod 411 is movably inserted into the sleeve hole of the sleeve.
- the active plug-in assembly of the active transmission component 3 and the driven transmission component 4 ensures that the active transmission component 3 and the driven transmission component 4 have good coaxiality when rotated in conjunction with each other, and the transmission efficiency is also improved;
- An annular step 311 is defined in the sleeve hole 31, a screw 43 is screwed to the bottom of the positioning protrusion 411, and a limiting circular table 431 is arranged at the bottom of the screw.
- the annular step is inserted between the limiting circular table and the bottom surface of the protruding column.
- a ring 32 is arranged between the annular step and the limiting circular table, and the ball forms a bearing structure with the annular step and the limiting circular table, so as to prevent the connection between the sleeve and the output shaft from being separated during strenuous movement.
- Rear The axial clearance becomes larger, which causes the torsion spring to deform, and also reduces the friction between the sleeve and the connecting portion during movement, and improves the transmission efficiency.
- the brake mechanism 8 includes a brake block 80.
- the top left side of the brake block is provided with a boss portion 81 for clamping the torsion spring 6, and the top portion of the brake block is provided with a boss portion for connecting with the connection mechanism 9.
- 1182, the brake block, the boss portion I and the boss portion are integrated, and the bottom of the brake block is elastically connected to the casing 1 by a torsion spring II 83, and the torsion spring II has a downward elastic pull
- the tightening force returns the brake block 80;
- the trigger 7 includes a turntable 71 that is transferred to the casing 1 and a rotating handle 72 that is integral with the turntable.
- the connecting mechanism 9 includes a connecting piece 90, and the top of the connecting piece 90
- the torsion spring ⁇ 93 is transferred to the turntable of the trigger 7, and the bottom of the connecting piece 90 is provided with a hook portion I 91 which is fastened to the convex portion II of the brake block, and the rotating handle 72 is rotated downward to make the turntable pull connection.
- a limiting mechanism is further disposed between the trigger 7 and the connecting mechanism 9, and the limiting mechanism comprises a hook portion 1 disposed in the middle of the connecting piece 90 192, a housing pin 1 above the hook portion II is provided with a limiting pin 94, the limiting pin During the ascending process of the connecting piece 90, the hooking portion II pushes the connecting piece 90 outward to rotate the hook portion I and the boss portion II to release the brake block.
- the blade assembly 5 includes a blade housing disposed at the front end of the casing 1, a stationary blade 51 fixed in the blade housing, and a movable blade 52 coupled to the stationary blade.
- the tail of the movable blade is provided.
- a hook 521 is provided for connecting the crank mechanism; the blade housing is assembled by the left and right sub-housings 50, 50' by fasteners 53, facilitating blade replacement.
- the crank mechanism includes an eccentric block 42 disposed on the top of the output shaft 40 and driven to rotate by the output shaft.
- the long axis eccentric head 421 of the eccentric block is coupled with a hook plate 44, and the other end of the hook plate is provided with a hook hole 441.
- the hook 521 is used for hooking the tail of the movable blade 52.
- the rotation of the eccentric block drives the hook plate to move back and forth to the left and right to drive the movable blade to make a cutting motion around the adapter.
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Description
一种剪刀机改进结构 技术领域 本发明涉及一种园林工具, 尤指一种用于对树枝、 灌木等进行修剪的剪刀 机。 背景技术 剪刀机是一种常用的园林工具, 用于对树枝、 灌木等进行修剪, 相比传统 的由人工手动操作的剪刀, 用剪刀机进行修剪, 劳动强度大大降低, 效率提高, 随着绿化程度的加大, 剪刀机将会成为一种必不可少的园林工具。 但在实际应 用中, 剪刀机还存在不少的缺点, 目前多数剪刀机刀片的转动与制动需要通过 电机正反转来实现, 操作不方便, 能耗大, 更重要的是电机的输出功率得不到 有效利用, 导致刀片的转动扭力减小, 使得剪刀机无法对较粗的树枝进行修剪, 对剪刀机的使用范围造成局限, 不仅如此, 电机频繁的变换转动方向也会縮短 电机自身的使用寿命。 发明内容 本发明所要解决的问题就是提供一种结构简单、 紧凑, 传动效率高、 输出 功率大的剪刀机。
为达上述目的, 本发明采用如下技术方案: 一种剪刀机改进结构, 包括机
壳、 设于机壳内的电机及设于机壳上的扳机, 电机通过传动机构驱动机壳前端 的刀片组件, 其特征在于: 所述传动机构包括与电机连接的主动传动组件及与 刀片组件连接的从动传动组件, 所述的主动传动组件与从动传动组件通过一螺 旋结构的扭簧连接, 所述的扭簧同时抱紧主动传动组件顶部与从动传动组件尾 部实现主动传动组件、 从动传动组件、 扭簧三者的连动旋转, 机壳内还设有制 动机构, 所述制动机构在扭簧随主动传动组件旋转时卡制在扭簧旋转方向上使 其松开主动传动组件实现制动, 所述的扳机通过连接机构控制制动机构卡制或 不卡制扭簧。
进一歩的, 所述的主动传动组件包括用于连接电机转动轴的过桥轴, 过桥 轴顶部固接有轴套; 所述的从动传动组件包括一输出轴, 输出轴的顶部设置曲 柄机构连接所述的刀片组件, 输出轴的底部设有与所述轴套配合抵接的柱形连 接部, 所述的扭簧同时抱紧在轴套与连接部的外壁上。
进一歩的, 所述连接部的底面上设有定位凸柱, 所述定位凸柱活动嵌入轴 套的套孔内实现主动传动组件与从动传动组件的活络插接配合, 保证主动传动 组件与从动传动组件连动旋转时具有良好的同轴度, 也有利于传动效率的提高。
进一歩的, 所述轴套的套孔内设有环形台阶, 所述定位凸柱底部旋接一螺 钉, 螺钉底部设有限位圆台, 所述的环形台阶活络卡装在限位圆台与凸柱底面 间形成环形间隙内, 环形台阶与限位圆台间环布有若干滚珠, 所述滚珠与环形 台阶、 限位圆台形成轴承结构。 上述结构不仅可以防止在剧烈运动时轴套与输 出轴的连接部脱离后轴向间隙变大, 导致扭簧变形, 还可减少轴套与连接部在 运动时的摩擦, 提高传动效率。
进一歩的, 所述制动机构包括制动块, 所述制动块顶部左侧设有卡制扭簧 用的凸起部 I, 制动块顶部右侧设置与连接机构连接用的凸起部 II, 制动块、
凸起部 I及凸起部 Π为一体结构, 所述制动块的底部通过扭簧 II弹性连接在机 壳上, 所述扭簧 II具有向下的弹性拉紧力使制动块回位。
进一歩的, 所述扳机包括转接在机壳上的转盘及与转盘一体的转动手柄, 所述的连接机构包括一连接片, 所述连接片顶部通过扭簧 III转接在扳机的转盘 上, 连接片底部设有与制动块的凸起部 Π相扣接的钩部 I, 所述的转动手柄向 下转动使转盘拉动连接片向上运动, 所述钩部 I抵住凸起部 II将制动块向上拉 起脱离与扭簧的卡制位置; 所述的扭簧 III具有向下的拉力使连接片回位。
进一歩的, 所述扳机与连接机构间还设有一限位机构, 所述限位机构包括 设在连接片中部的钩部 II, 钩部 II上方的机壳上设有一限位销, 所述限位销在 连接片上升过程中卡住钩部 Π推动连接片向外转动使钩部 I与凸起部 II脱离, 实现制动块的复位。
进一歩的, 所述的刀片组件包括设于机壳前端的刀片壳体, 固接于刀片壳 体内的静刀片及转接在静刀片上的动刀片, 所述动刀片的尾部设有挂钩用于连 接曲柄机构。
进一歩的, 所述刀片壳体由左、 右副壳体通过紧固件拼装而成, 便于刀片 更换。
进一歩的, 所述曲柄机构包括设在输出轴顶部并由输出轴驱动旋转的偏心 块, 所述偏心块的长轴偏心头上转接有钩板, 所述钩板的另一端设有挂钩孔用 于挂接动刀片尾部的挂钩, 偏心块旋转带动钩板左右来回移动驱动动刀片绕转 接处作切割运动。
本发明的有益效果: 本发明将剪刀机内的传动机构分为了主动传动组件与 从动传动组件, 扭簧连接主动传动组件与从动传动组件, 通过扭簧与主动传动 组件的抱紧或分离实现剪刀机的传动与制动, 电机运转始终朝向一个方向, 减
小了电流的消耗, 从而使输出功率增加, 剪刀机的剪切扭力大大提高, 可以对 较粗的树枝进行修剪; 同时本发明还具有内部结构紧凑、 刀片更换方便的优点。 附图说明 下面结合附图对本发明作进一歩的说明:
图 1为本发明的内部结构示意图;
图 2为图 1中 A处的放大图;
图 3为本发明主动传动组件、 从动传动组件、 刀片组件的连接结构示意图; 图 4为图 3中 B处的放大图;
图 5为本发明刀片组件的内部结构示意图。 具体实施方式 如图 1至图 4所示, 本发明一种剪刀机改进结构, 包括机壳 1、 设于机壳 1 内的电机 2及设于机壳 1上的扳机 7,电机 2通过传动机构驱动机壳 1前端的刀 片组件 5,所述传动机构包括与电机 2连接的主动传动组件 3及与刀片组件 5连 接的从动传动组件 4,所述的主动传动组件 3与从动传动组件 4通过一螺旋结构 的扭簧 6连接, 所述的扭簧 6同时抱紧主动传动组件 3顶部与从动传动组件 4 尾部实现主动传动组件 3、 从动传动组件 4、 扭簧 6三者的连动旋转, 机壳 1内 还设有制动机构 8,所述制动机构 8在扭簧 6随主动传动组件 3旋转时卡制在扭 簧旋转方向上使其松开主动传动组件 3实现制动,所述的扳机 7通过连接机构 9 控制制动机构 8卡制或不卡制扭簧。
主动传动组件 3包括用于连接电机 2转动轴的过桥轴 30, 过桥轴顶部固接
有轴套 31; 所述的从动传动组件 4包括一输出轴 40, 输出轴的顶部设置曲柄机 构连接所述的刀片组件 5,输出轴 40的底部设有与所述轴套 31配合抵接的柱形 连接部 41, 所述的扭簧同时抱紧在轴套与连接部的外壁上; 连接部的底面上设 有定位凸柱 411, 所述定位凸柱 411活动嵌入轴套的套孔内实现主动传动组件 3 与从动传动组件 4的活络插接配合, 保证主动传动组件 3与从动传动组件 4连 动旋转时具有良好的同轴度, 也有利于传动效率的提高; 轴套 31的套孔内设有 环形台阶 311, 所述定位凸柱 411底部旋接一螺钉 43, 螺钉底部设有限位圆台 431, 所述的环形台阶活络卡装在限位圆台与凸柱底面间形成的环形间隙内, 环 形台阶与限位圆台间环布有若干滚珠 32, 所述滚珠与环形台阶、 限位圆台形成 轴承结构, 这样不仅可以防止在剧烈运动时轴套与输出轴的连接部脱离后轴向 间隙变大, 导致扭簧变形, 还可减少轴套与连接部在运动时的摩擦, 提高传动 效率。
制动机构 8包括制动块 80, 所述制动块顶部左侧设有卡制扭簧 6用的凸起 部 1 81, 制动块顶部右侧设置与连接机构 9连接用的凸起部 1182, 制动块、 凸 起部 I及凸起部 Π为一体结构, 所述制动块的底部通过扭簧 II 83弹性连接在机 壳 1上, 所述扭簧 II具有向下的弹性拉紧力使制动块 80回位; 扳机 7包括转接 在机壳 1上的转盘 71及与转盘一体的转动手柄 72,所述的连接机构 9包括一连 接片 90, 所述连接片 90顶部通过扭簧 ΙΠ93转接在扳机 7的转盘上, 连接片 90 底部设有与制动块的凸起部 II相扣接的钩部 I 91, 所述的转动手柄 72向下转动 使转盘拉动连接片 90向上运动, 所述钩部 I 91抵住凸起部 II 82将制动块 80向 上拉起脱离与扭簧的卡制位置;所述的扭簧 ΙΠ93具有向下的拉力使连接片 90回 位; 所述扳机 7与连接机构 9间还设有一限位机构, 所述限位机构包括设在连 接片 90中部的钩部 1192, 钩部 II上方的机壳 1上设有一限位销 94, 所述限位销
在连接片 90上升过程中卡住钩部 II推动连接片 90向外转动使钩部 I与凸起部 II脱离, 实现制动块的复位。
如图 5所示, 刀片组件 5包括设于机壳 1前端的刀片壳体, 固接于刀片壳 体内的静刀片 51 及转接在静刀片上的动刀片 52, 所述动刀片的尾部设有挂钩 521用于连接曲柄机构; 刀片壳体由左、 右副壳体 50, 50 ' 通过紧固件 53拼装 而成, 便于刀片更换。 曲柄机构包括设在输出轴 40顶部并由输出轴驱动旋转的 偏心块 42, 所述偏心块的长轴偏心头 421上转接有钩板 44, 所述钩板的另一端 设有挂钩孔 441用于挂接动刀片 52尾部的挂钩 521, 偏心块旋转带动钩板左右 来回移动驱动动刀片绕转接处作切割运动。
工作原理: 在初始剪切状态下, 动刀片与静刀片的位置关系如图 5所示, 待修剪树枝可卡入静刀片内, 这时电机已启动并带动过桥轴转动, 使轴套及扭 簧也随之转动, 但制动块的凸起部 I卡制在扭簧的旋转方向上, 由于轴套未受 卡制, 因此轴套与扭簧间产生一个相对转动, 扭簧底部受力而膨胀并松开轴套, 电机的动力无法传至输出轴上, 刀片组件也就无法进行剪切;
向下拉动转动手柄使连接片上升, 连接片上的钩部 I在上升过程中与制动 块上的凸起部 Π相扣接将制动块向上拉起使其脱离与扭簧的卡制位置, 取消了 对扭簧的卡制, 扭簧以自身扭力抱紧轴套, 使轴套、 扭簧、 输出轴三者连动旋 转, 继而带动刀片组件上的动刀片进行剪切运行;
如图 1 所示, 在连接片上升过程中, 连接片上的钩部 II会受到设于机壳内 的限位销的阻挡向外转动, 从而使钩部 I与凸起部 II脱离, 制动块被扭簧 II拉 回, 凸起部 I重新卡制扭簧, 实现制动, 动刀片与静刀片再次回到初始剪切状 态, 一个剪切循环结束, 这时松开转动手柄, 连接片在扭簧 III的作用下复位; 整个剪切循环中, 电机始终是朝一个方向转动, 因此功率输出稳定, 相比
原有的剪刀机, 其剪切扭力大大提高, 可以对较粗的树枝进行修剪。 除上述优 选实施例外, 本发明还有其他的实施方式, 本领域技术人员可以根据本发明作 出各种改变和变形, 只要不脱离本发明的精神, 均应属于本发明所附权利要求 所定义的范围。
Claims
WO 2011/097833 权 和 j 要 求 书 PCT/CN2010/070783 、 一种剪刀机改进结构, 包括机壳 (1)、 设于机壳 (1) 内的电机 (2) 及设 于机壳 (1) 上的扳机 (7), 电机 (2) 通过传动机构驱动机壳 (1) 前端 的刀片组件 (5), 其特征在于: 所述传动机构包括与电机 (2) 连接的主 动传动组件 (3) 及与刀片组件 (5) 连接的从动传动组件 (4), 所述的主 动传动组件 (3) 与从动传动组件 (4) 通过一螺旋结构的扭簧 (6) 连接, 所述的扭簧 (6) 同时抱紧主动传动组件 (3) 顶部与从动传动组件 (4) 尾部实现主动传动组件 (3)、 从动传动组件 (4)、 扭簧三者的连动旋转, 机壳(1) 内还设有制动机构 (8), 所述制动机构 (8)在扭簧随主动传动 组件(3) 旋转时卡制在扭簧旋转方向上使其松开主动传动组件(3) 实现 制动, 所述的扳机 (7) 通过连接机构 (9) 控制制动机构 (8) 卡制或不 卡制扭簧。
、 根据权利要求 1所述的一种剪刀机改进结构, 其特征在于: 所述的主动传 动组件 (3) 包括用于连接电机 (2) 转动轴的过桥轴 (30), 过桥轴顶部 固接有轴套 (31); 所述的从动传动组件 (4) 包括一输出轴 (40), 输出 轴的顶部设置曲柄机构连接所述的刀片组件(5), 输出轴 (40) 的底部设 有与所述轴套 (31) 配合抵接的柱形连接部 (41), 所述的扭簧 (6) 同时 抱紧在轴套与连接部的外壁上。
、 根据权利要求 2所述的一种剪刀机改进结构,其特征在于:所述连接部 (41 ) 的底面上设有定位凸柱(411), 所述定位凸柱活动嵌入轴套的套孔内实现 主动传动组件 (3) 与从动传动组件 (4) 的活络插接配合。
、 根据权利要求 3所述的一种剪刀机改进结构, 其特征在于: 所述轴套的套 孔内设有环形台阶 (311), 所述定位凸柱底部旋接一螺钉 (43), 螺钉底 部设有限位圆台 (431), 所述的环形台阶活络卡装在限位圆台与凸柱底面
WO 2011/097833 权 和 j 要 求 书 PCT/CN2010/070783 间形成环形间隙内, 环形台阶与限位圆台间环布有若干滚珠 (32), 所述 滚珠与环形台阶、 限位圆台形成轴承结构。
、 根据权利要求 1或 2或 3或 4所述的一种剪刀机改进结构, 其特征在于: 所述制动机构 (8)包括制动块(80), 所述制动块顶部左侧设有卡制扭簧 用的凸起部 I (81 ), 制动块顶部右侧设置与连接机构 (9) 连接用的凸起 部 II (82 ), 制动块、 凸起部 I及凸起部 II为一体结构, 所述制动块的底 部通过扭簧 II (83) 弹性连接在机壳 (1 ) 上, 所述扭簧 II具有向下的弹 性拉紧力使制动块回位。
、 根据权利要求 5所述的一种剪刀机改进结构, 其特征在于: 所述扳机(7) 包括转接在机壳 (1 ) 上的转盘 (71 ) 及与转盘一体的转动手柄 (72), 所 述的连接机构(9)包括一连接片(90), 所述连接片顶部通过扭簧 III (93) 转接在扳机 (7) 的转盘上, 连接片底部设有与制动块的凸起部 II相扣接 的钩部 I (91 ), 所述的转动手柄向下转动使转盘拉动连接片向上运动, 所述钩部 I抵住凸起部 II将制动块向上拉起脱离与扭簧的卡制位置; 所述 的扭簧 III (93) 具有向下的拉力使连接片 (90) 回位。
、 根据权利要求 6所述的一种剪刀机改进结构, 其特征在于: 所述扳机(7) 与连接机构 (9) 间还设有一限位机构, 所述限位机构包括设在连接片中 部的钩部 II (91 ), 钩部 II上方的机壳 (1 ) 上设有一限位销 (94), 所述 限位销在连接片上升过程中卡住钩部 II推动连接片向外转动使钩部 I与 凸起部 Π脱离, 实现制动块的复位。
、 根据权利要求 2或 3或 4所述的一种剪刀机改进结构, 其特征在于: 所述 的刀片组件 (5) 包括设于机壳 (1 ) 前端的刀片壳体, 固接于刀片壳体内 的静刀片 (51 ) 及转接在静刀片上的动刀片 (52 ), 所述动刀片的尾部设
WO 2011/097833 权 和 j 要 求 书 PCT/CN2010/070783 有挂钩 (521) 用于连接曲柄机构。
、 根据权利要求 8所述的一种剪刀机改进结构, 其特征在于: 所述刀片壳体 由左、 右副壳体 (50、 50') 通过紧固件 (53) 拼装而成。
0、 根据权利要求 8所述的一种剪刀机改进结构, 其特征在于: 所述曲柄机构 包括设在输出轴顶部并由输出轴驱动旋转的偏心块 (42), 所述偏心块的 长轴偏心头(421)上转接有钩板(44),所述钩板的另一端设有挂钩孔(441) 用于挂接动刀片(51)尾部的挂钩(521),偏心块(42)旋转带动钩板(44) 左右来回移动驱动动刀片 (51) 绕转接处作切割运动。
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CN102523949B (zh) * | 2011-12-09 | 2015-09-30 | 宁波新港工具有限公司 | 剪枝机 |
CN109845508A (zh) * | 2019-04-10 | 2019-06-07 | 浙江天泰机械有限公司 | 绿篱机的驱动装置及绿篱机 |
CN110125987B (zh) * | 2019-05-16 | 2024-03-19 | 宁波赤菟科技有限公司 | 电剪刀 |
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EP0118350A1 (fr) * | 1983-02-18 | 1984-09-12 | SOCIETE D'ETUDES ET DE RECHERCHES DE L'ECOLE NATIONALE SUPERIEURE D'ARTS ET METIERS en abrégé S E R A M | Sécateur à moteur électrique |
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