WO2023025132A1 - 园林工具 - Google Patents

园林工具 Download PDF

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Publication number
WO2023025132A1
WO2023025132A1 PCT/CN2022/114159 CN2022114159W WO2023025132A1 WO 2023025132 A1 WO2023025132 A1 WO 2023025132A1 CN 2022114159 W CN2022114159 W CN 2022114159W WO 2023025132 A1 WO2023025132 A1 WO 2023025132A1
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WO
WIPO (PCT)
Prior art keywords
push rod
operating handle
pivot shaft
garden tool
limit
Prior art date
Application number
PCT/CN2022/114159
Other languages
English (en)
French (fr)
Inventor
侯维平
Original Assignee
江苏东成工具科技有限公司
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
Application filed by 江苏东成工具科技有限公司 filed Critical 江苏东成工具科技有限公司
Priority to DE112022001852.6T priority Critical patent/DE112022001852T5/de
Publication of WO2023025132A1 publication Critical patent/WO2023025132A1/zh
Priority to US18/522,296 priority patent/US20240090373A1/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
    • A01D34/68—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
    • A01D34/6806—Driving mechanisms
    • A01D34/6818—Motor starting mechanisms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/82—Other details
    • A01D34/824—Handle arrangements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D67/00—Undercarriages or frames specially adapted for harvesters or mowers; Mechanisms for adjusting the frame; Platforms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/82—Other details
    • A01D34/828—Safety devices

Definitions

  • the invention relates to a garden tool, in particular to a garden tool with a push rod mechanism.
  • Operating levers for pushing.
  • Such operating levers usually include a lower push rod connected to both sides of the main body of the garden tool and an upper push rod connected to the lower push rod.
  • the push rod is provided with a grip portion for pushing the tool during operation.
  • the operating rod connected to the main body of the lawn mower extends a certain length to the rear of the lawn mower, allowing the operator to work within a certain distance away from the cutting tool. ;
  • the lawn mower is not working, it is necessary to store the lawn mower.
  • people have carried out a folding or telescopic design on the operating rod.
  • a safety switch mechanism has been added during the folding or telescopic process to reduce the possibility of accidents.
  • the current existing technical solutions are either too complicated in structure, or have low reliability and potential safety hazards.
  • the purpose of the present invention is to provide a garden tool with simple structure, safety and reliability.
  • a garden tool including a relatively telescopic upper push rod and a lower push rod, and a control mechanism connecting the upper push rod and the lower push rod
  • the control The mechanism includes a safety switch, a telescopic locking assembly and an operating handle
  • the control mechanism also includes a trigger for triggering the safety switch
  • the telescopic locking assembly includes a between the limit member to limit the extension and contraction of the upper push rod relative to the lower push rod, and the stopper to keep the limit member in the limit state
  • the operating handle can be rotated around a pivot shaft Rotate between the first position and the second position, the trigger member and the stopper are both connected to the pivot shaft and driven by the operating handle, when the operating handle is at the first position, the The stopper presses the limiting member, so that the upper push rod and the lower push rod are relatively fixed, the trigger member does not trigger the safety switch, and the garden tool is allowed to be opened; when the operating handle In the second position, the
  • the safety switch is a contact switch or a Hall switch.
  • control mechanism includes a housing, the pivot shaft is supported in the housing, the trigger member is formed as a cam protruding radially from the pivot shaft, and the rotation radius of the cam is along the The axial direction of the pivot shaft changes uniformly, and when the operating handle is in the second position, the maximum radius of the cam touches the safety switch.
  • the stopper includes a baffle extending outward along the radial direction of the pivot shaft, and the baffle is arranged separately from the trigger along the axial direction of the pivot shaft.
  • the limiting member includes a limiting plate pivotably arranged on the housing and a limiting ball accommodated in the limiting plate, and the lower push rod is provided with a hole for receiving the limiting plate.
  • the positioning hole of the position ball, the upper push rod is provided with a limit hole for receiving the limit ball, only when the upper push rod is telescopic to the specified position relative to the lower push rod, the positioning hole and the The limit hole coincides.
  • the telescopic locking assembly includes an elastic member, the elastic member is arranged between the limiting plate and the housing, and the elastic member enables the limiting plate to drive the limiting plate The tendency of the bit ball to move towards the direction of the positioning hole.
  • the baffle and the limit plate are adjacently arranged, and when the operating handle is rotated to the first position, the baffle moves along the The circumferential direction of the pivot shaft coincides with the position of the limiting plate so as to limit the pivotal movement of the limiting plate.
  • the stopper also includes a second cam protruding radially from the pivot shaft, the second cam has a long diameter and a short diameter around the circumference of the pivot shaft, when the operating handle When rotating to the first position, the long diameter of the second cam faces the lower push rod.
  • the side of the lower push rod facing the long diameter is provided with a strip-shaped hole for receiving the second cam, and the limiting member also includes a flexible piece accommodated in the strip-shaped hole.
  • control mechanism also includes a suspension that rotates around the pivot shaft, the suspension is arranged on the opposite side of the operating handle, and a stopper is provided between the operating handle, The suspension part deviates from the operating handle by a certain angle along the circumference of the pivot shaft, and only when the operating handle is in the first position, the stopper abuts against the suspension part to make the The suspension protrudes beyond the operating handle.
  • the present invention has the following beneficial effects: when the operating handle of the garden tool is rotated between the second position and the first position, the safety switch can be triggered while the limit member is released to ensure the operation of the garden tool.
  • the handle, the trigger of the safety switch and the stopper for telescopic control rotate around the same pivot axis, and at least two operations can be completed synchronously with only one operation of the handle. The operation is simple and the structure is extraordinarily.
  • Fig. 1 is the overall structure schematic diagram of the mower of preferred embodiment of the present invention.
  • Fig. 2 is a schematic structural view of the push rod and the control mechanism of the mower shown in Fig. 1;
  • Fig. 3 is an enlarged schematic diagram of part of the structure of the control mechanism shown in Fig. 2;
  • Fig. 4 is an enlarged schematic view of the partial structure shown in Fig. 3 in another state;
  • Fig. 5 is a schematic cross-sectional view of the push rod and the control mechanism shown in Fig. 2 at another viewing angle;
  • Fig. 6 is an enlarged schematic diagram of a safety switch and a trigger of the control mechanism shown in Fig. 5;
  • Fig. 7 is an enlarged schematic view of the safety switch and the trigger shown in Fig. 6 in another state;
  • Fig. 8 is a schematic cross-sectional view of the control mechanism shown in Fig. 2 at another viewing angle;
  • Fig. 9 is an enlarged schematic view of the telescopic locking assembly of the control mechanism shown in Fig. 8;
  • Fig. 10 is an enlarged schematic view of the telescopic locking assembly shown in Fig. 9 in another state.
  • Switch housing 7. Suspension piece 71. Hook
  • the garden tool mentioned in the present application is a lawn mower 100 in a preferred embodiment.
  • the garden tool may also be a garden tool such as a trolley or a snowplow.
  • the mower 100 includes a relatively telescopic upper push rod 12 and a lower push rod 11, and a control mechanism that connects the upper push rod 12 and the lower push rod 11.
  • the control mechanism includes a safety switch 6,
  • the telescopic locking assembly 8 and the operating handle 14, the control mechanism also includes a trigger 16 that triggers the safety switch 6, and the telescopic locking assembly 8 includes an operably entered between the upper push rod 12 and the lower push rod 11 to limit the upper push rod 12
  • a stopper that is telescopic relative to the lower push rod 11, and a stopper that keeps the limiter in a position-limited state; wherein, the operating handle 14 can rotate between a first position and a second position around a pivot shaft 15, and the trigger member 16 and the stopper are connected to the pivot shaft 15 and are driven by the operating handle 14.
  • the stopper presses against the stopper so that the upper push rod 12 and the lower push rod 11 are relatively fixed.
  • the trigger 16 does not trigger the safety switch 6, and the mower 100 is allowed to open; when the operating handle 14 is in the second position, the safety switch 6 is triggered, and at the same time, the stopper is separated from the limiter, and the upper push rod 12 is relatively lowered.
  • the push rod 11 is movably connected, and the lawnmower 100 is restricted to open.
  • the operating handle 14 of the lawn mower 100 rotates between the second position and the first position, and can trigger the safety switch 6 while releasing the limit to the limiter, so as to ensure the safety of the operation of the lawn mower 100.
  • the operating handle 14 The trigger 16 of the safety switch 6 and the stopper for telescopic control rotate around the same pivot shaft 15, and at least two operations can be completed synchronously with only one operation of the handle 14. The operation is simple and the structure is tiny.
  • the safety switch 6 is a contact switch or a Hall switch. In this embodiment, the safety switch 6 is a contact switch.
  • the lawn mower 100 also includes an operating handle 3 located above the control mechanism. The operating handle 3 is provided with a start switch 4, and the safety switch 6 is connected to the start switch 4 signal. When the safety switch 6 is triggered, the start switch 4 is restricted to open, and the The grass mower 100 cannot perform the mowing operation, and when the safety switch 6 is not triggered, the start switch 4 is allowed to be turned on, and the user can turn on the start switch 4 to perform the mowing operation.
  • control mechanism includes a housing 13
  • the pivot shaft 15 is supported in the housing 13
  • the trigger 16 is formed as a cam protruding radially from the pivot shaft 15, and the radius of rotation of the cam is along the pivot shaft 15 Axial changes uniformly.
  • the safety switch 6 includes a housing 63, a button 62 protruding from the housing 63, and an activation rod 62 extending outward from the housing 63.
  • the activation rod 62 is located at the top of the button 62.
  • This embodiment provides two sets of preferred embodiments of the telescopic locking assembly 8, that is, the first locking assembly and the second locking assembly, and the two sets of locking assemblies coexist in this embodiment, and both are linked with the operating handle 14 .
  • the rotation of the operating handle 14 between the first position and the second position not only affects whether the safety switch 6 is triggered, but also plays a consistent role of limiting or unlocking the first locking component and the second locking component.
  • the stopper in the first locking assembly, is a baffle 19 extending radially outward along the pivot shaft 15, and the baffle 19 and the trigger 16 are along the
  • the pivot shafts 15 are arranged at intervals in the axial direction.
  • the baffle plate 19 and the cam are arranged coaxially, and both rotate with the rotation of the operating handle 14 at the same time.
  • the limiting member is a limiting plate 17 pivotally arranged on the casing 13 and a limiting ball 18 accommodated in the limiting plate 17, and the lower push rod 11 is provided with a positioning position for receiving the limiting ball 18.
  • the hole 111 and the upper push rod 12 are provided with a limit hole 121 for receiving the limit ball 18. Only when the upper push rod 12 stretches to a specified position relative to the lower push rod 11, the positioning hole 111 and the limit hole 121 coincide. When the upper push rod 12 stretches to the position, the positioning hole 111 and the limit hole 121 coincide, and the limit ball 18 enters between the positioning hole 111 and the limit hole 121 to limit the relative movement of the upper push rod 12 and the lower push rod 11 .
  • the limiting plate 17 is pivotably arranged in the housing 13, so that the limiting ball 18 can exit the positioning hole 111 and the limiting hole 121 with the pivotal movement of the limiting plate 17, so as to
  • the upper push rod 12 is allowed to expand and contract relative to the lower push rod 11 .
  • the plane where the pivot axis 171 of the limiting plate 17 is located is perpendicular to the pivot axis 15 of the operating handle 14 .
  • the telescopic locking assembly 8 includes an elastic member 81, the elastic member 81 is arranged between the limiting plate 17 and the housing 13, and the elastic member 81 makes the limiting plate 17 have a driving force.
  • the limiting ball 18 tends to move toward the direction approaching the positioning hole 111 .
  • the elastic member 81 is a compression spring, and the compression spring located between the housing 13 and the limiting plate 17 has an elastic force that returns to its natural length, and the elastic force drives the limiting plate 17 to move toward the positioning hole 111, so that the limiting The ball 18 always has a tendency to enter between the positioning hole 111 and the limit hole 121 to limit the expansion and contraction of the upper push rod 12 relative to the lower push rod 11, so as to ensure that the upper push rod 12 and the lower push rod 11 remain stretched to avoid being easily contracted .
  • the baffle plate 19 and the limit plate 17 are arranged adjacent to each other.
  • the circumferential direction coincides with the limit plate 17 so as to limit the pivotal movement of the limit plate 17.
  • the baffle plate 19 When the baffle plate 19 rotates with the operating handle 14, in the circumferential direction of the pivot shaft 15, the baffle plate 19 has two positions at least partially coincident with the limit plate 17 and staggered with the limit plate 17.
  • the baffle plate 19 coincides with the limit plate 17, and the baffle plate 19 limits the pivotal movement of the limit plate 17, so that the limit plate 17 cannot move around the pivot 171 toward Rotate away from the direction of the positioning hole 111, at this time the limit ball 18 is fixed between the positioning hole 111 and the limit hole 121, the upper push rod 12 cannot perform telescopic operation relative to the lower push rod 11; and when the operating handle 14 is in the second position
  • the baffle plate 19 gives way to the movable space of the limit plate 17, allowing the limit ball 18 to withdraw from the positioning hole 111.
  • the upper push rod 12 It is easy to overcome the resistance of the limit ball 18, make the edge of the limit hole 121 cross the limit ball 18 and push the limit ball 18 out of the positioning hole 111, thereby realizing the telescopic operation of the upper push rod 12 relative to the lower push rod 11.
  • the second telescopic locking component can be regarded as a supplement to the first telescopic locking component, which can further stabilize and strengthen the telescopic locking, while in other
  • the first telescopic locking component and the second telescopic locking component can be used alternatively to realize the function of telescopic locking independently.
  • the stopper is a second cam 82 protruding radially from the pivot shaft 15, and the second cam 82 has a long diameter and a short diameter around the circumference of the pivot shaft 15.
  • the long diameter of the second cam 82 faces downward to push the rod 11 .
  • the long diameter of the cam plays a role of pressing against the lower push rod 11 and the upper push rod 12, increasing the frictional force required for the upper push rod 12 to stretch relative to the lower push rod 11.
  • the second cam 82 is located at the end of the pivot shaft 15, and is located on the side adjacent to the lower push rod 11 with the limit plate 17, that is, the two telescopic locking modes face two different sides of the lower push rod 11 , and play a limiting role at the same time, but also unlock synchronously, thereby ensuring the stability of locking.
  • the side of the lower push rod 11 facing the long diameter is provided with a bar-shaped hole 113 for receiving the second cam 82, and the stopper is a flexible member 83 accommodated in the bar-shaped hole 113.
  • the arrangement of the bar-shaped hole 113 and the flexible member 83 is convenient for the second cam 82 to exert a more significant influence between the upper push rod 12 and the lower push rod 11, that is, in the first position (as shown in Figure 10), the second The two cams 82 make the flexible piece 83 pass through the strip hole 113 and directly press against the pipe wall of the upper push rod 12, and the force is greater.
  • the contact between the flexible piece 83 and the pipe wall of the upper push rod 12 increases the resistance. function, so that when the operating handle 14 is at the first position, if the user forcibly stretches the upper push rod 12, he will encounter strong resistance and it is difficult to realize the telescopic operation.
  • the upper push rod 12 is in an extended position relative to the lower push rod 11 at this time, and the user needs to perform a mowing operation, then only the operating handle 14 is turned back to the first position, so that the baffle plate 19 is turned back to the limit limit.
  • the position of the bit plate 17, and the long diameter of the second cam 82 interferes between the upper push rod 12 and the lower push rod 11 through the flexible member 83 to complete telescopic locking.
  • the short diameter of the cam of the trigger member 16 faces The safety switch 6, the safety switch 6 is not triggered, and the start switch 4 of the lawn mower 100 is no longer restricted. In this way, the user can start the mowing operation by turning on the start switch 4.
  • control mechanism also includes a hanger 7 that rotates around the pivot shaft 15.
  • the hanger 7 is provided with a hook 71.
  • the hanger 7 is arranged on the opposite side of the operating handle 14, and a stopper 72 is arranged between the operating handle 14.
  • Suspension The member 7 deviates from the operating handle 14 at a certain angle along the circumference of the pivot shaft 15, and only when the operating handle 14 is in the first position, the stopper 72 abuts against the suspension member 7 so that the suspension member 7 protrudes beyond the operation handle 14.
  • the setting of the suspension part 7 further exerts the linkage effect of the operating handle 14, so that the push rod mechanism 1 can be connected with the main body 2 of the lawnmower 100 during storage, and the stability of the push rod mechanism 1 is strengthened.
  • the operating handle 14 in the present application when the operating handle 14 in the present application is rotated, it can drive the trigger 16 of the safety switch 6, the baffle 19 that limits the limit plate 17, the second cam 82 that resists the flexible member 83, and the second cam 82 that is used to stabilize the push rod mechanism 1.
  • the suspension parts move synchronously, the structure is tiny, the operation is simple, and the stability is high, which ensures the operation safety and convenience of the lawn mower 100 .

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Abstract

一种园林工具，包括可相对伸缩的上、下推杆，以及连接上、下推杆的控制机构，控制机构包括安全开关、伸缩锁紧组件以及操作把手，还包括触发安全开关的触发件，伸缩锁紧组件包括可操作地进入上推杆和下推杆之间以限制上推杆相对下推杆伸缩的限位件，以及使限位件保持在限位状态的止挡件；其中，操作把手可围绕一枢转轴在第一位置和第二位置间旋转，触发件和止挡件均连接于枢转轴并被操作把手驱动，当操作把手位于第一位置时，止挡件抵压限位件，使上推杆与下推杆相对固定，触发件未触发安全开关，园林工具被允许开启；当操作把手在第二位置时，安全开关被触发，同时，止挡件与限位件分开，上推杆相对下推杆活动连接，园林工具被限制开启。

Description

园林工具 [技术领域]
本发明涉及一种园林工具，尤其涉及具有推杆机构的园林工具。
[背景技术]
割草机、铲雪车、手推车等园林工具都设置有用于推行的操作杆，此类操作杆通常包括连接于园林工具主体两侧的下推杆以及与下推杆相连的上推杆，上推杆上设置有供工具作业时推行的握持部。
以割草机为例，当割草机处于工作状态时，连接于割草机主体上的操作杆向割草机后方延伸一定的长度，供操作者在远离切割工具一定长度的安全距离内工作；当割草机处于非工作状态时，需要将割草机进行收藏储放。人们为了存储需要，对操作杆进行了折叠式或伸缩式设计，同时为了达到安全性的要求，在折叠或伸缩过程中增加了安全开关机构，以降低意外发生的可能性。但目前现有的技术方案不是结构过于复杂，就是可靠性不高、存在安全性隐患。
鉴于此，确有必要提供一种改进的推杆机构，以克服现有技术存在的缺陷。
[发明内容]
针对现有技术的不足，本发明的目的在于提供一种结构简单且安全可靠的园林工具。
本发明解决现有技术问题所采用的技术方案是：一种园林工具，包括可相对伸缩的上推杆和下推杆，以及连接所述上推杆和下推杆的控制机构，所述控制机构包括安全开关、伸缩锁紧组件以及操作把手，所述控制机构还包括触发所述安全开关的触发件，所述伸缩锁紧组件包括可操作地进入所述上推杆和所述下推杆之间以限制所述上推杆相对所述下推杆伸缩的限位件，以及使所述限 位件保持在限位状态的止挡件；其中，所述操作把手可围绕一枢转轴在第一位置和第二位置间旋转，所述触发件和所述止挡件均连接于所述枢转轴并被所述操作把手驱动，当所述操作把手位于所述第一位置时，所述止挡件抵压所述限位件，使所述上推杆与所述下推杆相对固定，所述触发件未触发所述安全开关，所述园林工具被允许开启；当所述操作把手在所述第二位置时，所述安全开关被触发，同时，所述止挡件与所述限位件分开，所述上推杆相对所述下推杆活动连接，所述园林工具被限制开启。
作为进一步的优化方案，所述安全开关为触点开关或霍尔开关。
作为进一步的优化方案，所述控制机构包括壳体，所述枢转轴支撑于所述壳体内，所述触发件形成为沿径向突出于所述枢转轴的凸轮，所述凸轮的旋转半径沿所述枢转轴的轴向均匀变化，当所述操作把手在所述第二位置时，所述凸轮的最大半径接触所述安全开关。
作为进一步的优化方案，所述止挡件包括沿所述枢转轴的径向向外延伸的挡板，所述挡板与所述触发件沿所述枢转轴的轴向分开设置。
作为进一步的优化方案，所述限位件包括可枢转地设于所述壳体的限位板和收容于所述限位板的限位球，所述下推杆开设有接收所述限位球的定位孔，所述上推杆开设有接收所述限位球的限位孔，仅当所述上推杆相对所述下推杆伸缩到指定位置时，所述定位孔和所述限位孔重合。
作为进一步的优化方案，所述伸缩锁紧组件包括弹性件，所述弹性件设于所述限位板和所述壳体之间，所述弹性件使所述限位板具有带动所述限位球向靠近所述定位孔的方向运动的趋势。
作为进一步的优化方案，在所述枢转轴的轴向上，所述挡板和所述限位板紧邻设置，当所述操作把手旋转到所述第一位置时，所述挡板沿所述枢转轴的 周向与所述限位板位置重合从而限制所述限位板的枢转运动。
作为进一步的优化方案，所述止挡件还包括径向突出于所述枢转轴第二凸轮，所述第二凸轮围绕所述枢转轴的周向具有长径和短径，当所述操作把手旋转到所述第一位置时，所述第二凸轮的所述长径面向所述下推杆。
作为进一步的优化方案，所述下推杆面向所述长径的一面开设有接收所述第二凸轮的条形孔，所述限位件还包括收容于所述条形孔的柔性件，当所述操作把手位于所述第一位置时，所述长径通过所述柔性件抵靠于所述上推杆和所述下推杆之间。
作为进一步的优化方案，所述控制机构还包括围绕所述枢转轴旋转的悬挂件，所述悬挂件设于所述操作把手的对侧，且与所述操作把手之间设有止动件，所述悬挂件与所述操作把手沿所述枢转轴的周向偏离一定的角度，仅当所述操作把手位于所述第一位置时，所述止动件抵靠所述悬挂件使所述悬挂件突出于操作把手之外。
与现有技术相比，本发明具有如下有益效果：园林工具的操作把手在第二位置和第一位置间旋转，能够在对限位件解除限位的同时，触发安全开关，保证园林工具操作的安全性，同时操作把手与安全开关的触发件以及进行伸缩控制的止挡件围绕同一枢转轴旋转，仅需操作把手的一步操作即可同步完成至少两个操作，操作简单、结构精巧。
[附图说明]
下面结合附图对本发明的具体实施方式做进一步详细的说明:
图1是本发明较佳实施例的割草机的整体结构示意图；
图2是图1所示的割草机的推杆及控制机构的结构示意图；
图3是图2所示的控制机构的部分结构放大示意图；
图4是图3所示的部分结构在另一状态下的放大示意图；
图5是图2所示的推杆及控制机构在另一视角下的剖视示意图；
图6是图5所示的控制机构的安全开关及触发件的放大示意图；
图7是图6所示的安全开关及触发件在另一状态下的放大示意图；
图8是图2所示的控制机构在又一视角下的剖视示意图；
图9是图8所示的控制机构的伸缩锁紧组件的放大示意图；
图10是图9所示的伸缩锁紧组件在另一状态下的放大示意图。
图中附图标记的含义：
100、割草机         1、推杆机构         11、下推杆
111、定位孔         12、上推杆          113、条形孔
121、限位孔         13、壳体            14、操作把手
15、枢转轴          16、触发件(凸轮)    17、限位板
171、枢轴           18、限位球          19、挡板
2、主体             3、操作手柄         4、启动开关
6、安全开关         61、激发杆          62、按钮
63、开关壳体        7、悬挂件           71、挂钩
72、止动件          8、伸缩锁紧组件     81、弹性件
82、第二凸轮        83、柔性件
[具体实施方式]
在本发明中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。例如下述的“上”、“下”、“前”、“后”等指示方位或位置关系的词语仅基于附图所示的方位或位置关系，仅为了便于描述本发明和简化描述，而不是指示或暗示所指的装置/元件必须具有特定的方位或以特定的方位构造和操作，因此不能理解为对本发明的限制。
本发明不局限于上述具体实施方式。本领域普通技术人员可以很容易地理解到，在不脱离本发明原理和范畴的前提下，本发明的园林工具还有很多的替代方案。本发明的保护范围以权利要求书的内容为准。
参见图1所示，本申请所提及的园林工具在优选实施例中是割草机100，当然，在其他实施方式中，园林工具也可以是手推车或扫雪机等园林工具。
结合图1、图2所示，割草机100包括可相对伸缩的上推杆12和下推杆11，以及连接上推杆12和下推杆11的控制机构，控制机构包括安全开关6、伸缩锁紧组件8以及操作把手14，控制机构还包括触发安全开关6的触发件16，伸缩锁紧组件8包括可操作地进入上推杆12和下推杆11之间以限制上推杆12相对下推杆11伸缩的限位件，以及使限位件保持在限位状态的止挡件；其中，操作把手14可围绕一枢转轴15在第一位置和第二位置间旋转，触发件16和止挡件均连接于枢转轴15并被操作把手14驱动，当操作把手14位于第一位置时，止挡件抵压限位件，使上推杆12与下推杆11相对固定，触发件16未触发安全开关6，割草机100被允许开启；当操作把手14在第二位置时，安全开关6被触发，同时，止挡件与限位件分开，上推杆12相对下推杆11活动连接，割草机100被限制开启。
割草机100的操作把手14在第二位置和第一位置间旋转，能够在对限位件解除限位的同时，触发安全开关6，保证割草机100操作的安全性，同时操作把手14与安全开关6的触发件16以及进行伸缩控制的止挡件围绕同一枢转轴15旋转，仅需操作把手14的一步操作即可同步完成至少两个操作，操作简单、结构精巧。
安全开关6为触点开关或霍尔开关，在本实施方式中，安全开关6为触点开关。割草机100还包括位于控制机构上方的操作手柄3，操作手柄3上设有启动开关4，安全开关6与启动开关4信号连接，当安全开关6被触发，启动开关4被限制开启，割草机100无法进行割草操作，而当安全开关6未被触发，则启动开关4被允许开启，用户可开启动开关4以执行割草操作。
参见图2-图7，其中，控制机构包括壳体13，枢转轴15支撑于壳体13内，触发件16形成为沿径向突出于枢转轴15的凸轮，凸轮的旋转半径沿枢转轴15的轴向均匀变化。当操作把手14在第二位置(如图3、图6所示)时，凸轮的最大半径接触安全开关6。
安全开关6包括壳体63、突出于壳体63的按钮62以及由壳体63向外延伸的激发杆62，激发杆62位于按钮62的顶部，当操作把手14旋转到第二位置时，凸轮的最大半径抵压接触激发杆62，从而触发按钮62，而随着操作把手14转动到第一位置(如图4、图7所示)，凸轮的最大半径沿枢转轴15的周向远离激发杆62，取而代之的是最小半径面向激发杆62，因而不能触发安全开关6。因此，当操作把手14固定到第一位置时，安全开关6未被触发，割草机100可被开启以进行割草操作。
本实施方式提供了伸缩锁紧组件8的两组优选实施例，即第一锁紧组件和第二锁紧组件，并且两组锁紧组件在本实施方式中并存，且都与操作把手14联动。换言之，操作把手14在第一位置和第二位置间旋转，不仅影响安全开关6的触发与否，同时对第一锁紧组件和第二锁紧组件起到一致的限定或解锁的作用。
结合图3、图4和图8-图10所示，在第一锁紧组件中，止挡件为沿枢转轴15的径向向外延伸的挡板19，挡板19与触发件16沿枢转轴15的轴向间隔设置。挡板19和凸轮同轴设置，两者同时随操作把手14的旋转而转动。
在此种情况下，限位件为可枢转地设于壳体13的限位板17和收容于限位板17的限位球18，下推杆11开设有接收限位球18的定位孔111，上推杆12开设有接收限位球18的限位孔121，仅当上推杆12相对下推杆11伸缩到指定位置时，定位孔111和限位孔121重合。当上推杆12伸缩到位时，定位孔111 和限位孔121重合，限位球18进入定位孔111和限位孔121之间，限制上推杆12和下推杆11的相对运动。值得一提的是，限位板17可枢转地设于壳体13内，如此，使得限位球18可以随着限位板17的枢转运动退出定位孔111和限位孔121，以允许上推杆12相对下推杆11进行伸缩。在本实施方式中，限位板17的枢轴171所在的平面与操作把手14的枢转轴15垂直。
继续参见图3、图4和图9、图10，伸缩锁紧组件8包括弹性件81，弹性件81设于限位板17和壳体13之间，弹性件81使限位板17具有带动限位球18向靠近定位孔111的方向运动的趋势。弹性件81为压缩弹簧，位于壳体13和限位板17之间的压缩弹簧具有回复到自然长度的弹性力，该弹性力驱使限位板17向靠近定位孔111的方向移动，使得限位球18始终具有进入定位孔111和限位孔121之间以限制上推杆12相对下推杆11伸缩的趋势，如此能保证上推杆12和下推杆11保持伸展状态以避免轻易被收缩。
另外，在枢转轴15的轴向上，挡板19和限位板17紧邻设置，当操作把手14旋转到第一位置时(如图4、图10所示)，挡板19沿枢转轴15的周向与限位板17位置重合从而限制限位板17的枢转运动。
挡板19随着操作把手14旋转时，在枢转轴15的周向上，挡板19具有与限位板17至少部分重合的位置和与限位板17错开的两种位置，当操作把手14位于第一位置时(如图4、图10所示)，挡板19与限位板17重合，挡板19限制了限位板17的枢转运动，使得限位板17无法绕枢轴171朝远离定位孔111的方向转动，此时限位球18被固定于定位孔111和限位孔121之间，上推杆12无法相对下推杆11进行伸缩操作；而当操作把手14位于第二位置时(如图3、图9所示)，挡板19让出限位板17的活动空间，允许限位球18退出定位孔111，此时如果用户施加一定的作用力，则上推杆12容易克服限位球18的阻力，使 限位孔121的边缘越过限位球18并将限位球18推出定位孔111以外，从而实现上推杆12相对下推杆11的伸缩操作。
继续参见图8-图10所示，在本实施方式中，第二伸缩锁紧组件可视为对第一伸缩锁紧组件的补充，对伸缩锁紧有进一步的稳固、加强作用，而在其他实施方式中，第一伸缩锁紧组件和第二伸缩锁紧组件可择一使用，单独实现伸缩锁紧的功能。在第二伸缩锁紧组件中，止挡件为径向突出于枢转轴15的第二凸轮82，第二凸轮82围绕枢转轴15的周向具有长径和短径，当操作把手14旋转到第一位置时(如图10所示)，第二凸轮82的长径面向下推杆11。凸轮的长径起到对下推杆11和上推杆12的抵压作用，增大了上推杆12相对下推杆11伸缩所需的摩擦力。进一步地，第二凸轮82位于枢转轴15的端部，并与限位板17位于下推杆11相邻的一侧，即两种伸缩锁紧方式面向下推杆11的两个不同的侧面，且同时发挥限位作用，也同步解锁，由此保证了锁紧的稳定性。
在第二伸缩锁紧组件中，下推杆11面向长径的一面开设有接收第二凸轮82的条形孔113，限位件为收容于条形孔113的柔性件83，当操作把手14位于第一位置时，长径通过柔性件83抵靠于上推杆12和下推杆11之间。条形孔113和柔性件83的设置，便于第二凸轮82对上推杆12和下推杆11之间施加更为显著的影响，即在第一位置时(如图10所示)，第二凸轮82使柔性件83穿过条形孔113而直接抵压到上推杆12的管壁上，作用力更大，同时柔性件83与上推杆12管壁的接触，增加了阻滞作用，使得操作把手14在第一位置时，用户如强行伸缩上推杆12，会遭受强大的阻力而难以实现伸缩操作。
当然，如用户需要伸缩上推杆12，只需旋转操作把手14，将操作把手14从第一位置转动到第二位置(如图9所示)，此时，第二凸轮82转动到短径与柔性件83接触，而使得柔性件83不再抵押上推杆12的管壁，与此同时，挡板 19由与限位板17周向重合且轴向抵靠的位置转动到周向错开的位置，使得两组伸缩锁紧组件8均解除对上推杆12和下推杆11之间的限位作用，这样，用户只需向第二推杆施加一定的拉力或压力，使其克服限位球18的阻力而将限位球18挤压出定位孔111外，即可进行拉伸或收缩的操作，直到拉伸到位或收缩到位时，定位孔111和限位孔121重合，限位球18在弹性力的驱使下再次进入定位孔111和限位孔121中，完成上推杆12相对下推杆11的固定。值得注意的是，此时，安全开关6被触发件16触发，割草机100处于不能启动割草的状态。
进一步地，如此时上推杆12相对下推杆11处于伸展位置，且用户需要执行割草操作，则只需将操作把手14转回到第一位置，使挡板19转回到限位限位板17的位置，且第二凸轮82的长径通过柔性件83抵触在上推杆12和下推杆11之间，以完成伸缩锁紧，与此同时，触发件16的凸轮短径面向安全开关6，安全开关6未被触发，对割草机100的启动开关4不再有限制作用，这样，用户开启启动开关4即可进行割草操作。
另外，控制机构还包括围绕枢转轴15旋转的悬挂件7，挂件7设有挂钩71，悬挂件7设于操作把手14的对侧，且与操作把手14之间设有止动件72，悬挂件7与操作把手14沿枢转轴15的周向偏离一定的角度，仅当操作把手14位于第一位置时，止动件72抵靠悬挂件7使悬挂件7突出于操作把手14之外。悬挂件7的设置，进一步发挥了操作把手14的联动作用，使得推杆机构1在收纳时能够与割草机100主体2产生连接作用，加强推杆机构1收纳的稳定性。
综上，本申请中的操作把手14旋转时可带动安全开关6的触发件16、限制限位板17的挡板19、抵触柔性件83的第二凸轮82以及用于稳固推杆机构1的悬挂件同步运动，结构精巧且操作简单、稳定性高，保证了割草机100的操作安全性和便利性。
本发明不局限于上述具体实施方式。本领域普通技术人员可以很容易地理解到，在不脱离本发明原理和范畴的前提下，本发明的园林工具还有很多的替代方案。本发明的保护范围以权利要求书的内容为准。

Claims (10)

  1. 一种园林工具，包括可相对伸缩的上推杆和下推杆，以及连接所述上推杆和下推杆的控制机构，所述控制机构包括安全开关、伸缩锁紧组件以及操作把手，所述控制机构还包括触发所述安全开关的触发件，所述伸缩锁紧组件包括可操作地进入所述上推杆和所述下推杆之间以限制所述上推杆相对所述下推杆伸缩的限位件，以及使所述限位件保持在限位状态的止挡件；其特征在于：所述操作把手可围绕一枢转轴在第一位置和第二位置间旋转，所述触发件和所述止挡件均连接于所述枢转轴并被所述操作把手驱动，当所述操作把手位于所述第一位置时，所述止挡件抵压所述限位件，使所述上推杆与所述下推杆相对固定，所述触发件未触发所述安全开关，所述园林工具被允许开启；当所述操作把手在所述第二位置时，所述安全开关被触发，同时，所述止挡件与所述限位件分开，所述上推杆相对所述下推杆活动连接，所述园林工具被限制开启。
  2. 根据权利要求1所述的园林工具，其特征在于：所述安全开关为触点开关或霍尔开关。
  3. 根据权利要求2所述的园林工具，其特征在于：所述控制机构包括壳体，所述枢转轴支撑于所述壳体内，所述触发件形成为沿径向突出于所述枢转轴的凸轮，所述凸轮的旋转半径沿所述枢转轴的轴向均匀变化，当所述操作把手在所述第二位置时，所述凸轮的最大半径接触所述安全开关。
  4. 根据权利要求1所述的园林工具，其特征在于：所述止挡件包括沿所述枢转轴的径向向外延伸的挡板，所述挡板与所述触发件沿所述枢转轴的轴向分开设置。
  5. 根据权利要求4所述的园林工具，其特征在于：所述限位件包括可枢转地设 于所述壳体的限位板和收容于所述限位板的限位球，所述下推杆开设有接收所述限位球的定位孔，所述上推杆开设有接收所述限位球的限位孔，仅当所述上推杆相对所述下推杆伸缩到指定位置时，所述定位孔和所述限位孔重合。
  6. 根据权利要求5所述的园林工具，其特征在于：所述伸缩锁紧组件包括弹性件，所述弹性件设于所述限位板和所述壳体之间，所述弹性件使所述限位板具有带动所述限位球向靠近所述定位孔的方向运动的趋势。
  7. 根据权利要求5所述的园林工具，其特征在于：在所述枢转轴的轴向上，所述挡板和所述限位板紧邻设置，当所述操作把手旋转到所述第一位置时，所述挡板沿所述枢转轴的周向与所述限位板位置重合从而限制所述限位板的枢转运动。
  8. 根据权利要求1所述的园林工具，其特征在于：所述止挡件包括径向突出于所述枢转轴第二凸轮，所述第二凸轮围绕所述枢转轴的周向具有长径和短径，当所述操作把手旋转到所述第一位置时，所述第二凸轮的所述长径面向所述下推杆。
  9. 根据权利要求8所述的园林工具，其特征在于：所述下推杆面向所述长径的一面开设有接收所述第二凸轮的条形孔，所述限位件包括收容于所述条形孔的柔性件，当所述操作把手位于所述第一位置时，所述长径通过所述柔性件抵靠于所述上推杆和所述下推杆之间。
  10. 根据权利要求1所述的园林工具，其特征在于：所述控制机构还包括围绕所述枢转轴旋转的悬挂件，所述悬挂件设于所述操作把手的对侧，且与所述操作把手之间设有止动件，所述悬挂件与所述操作把手沿所述枢转轴的周向偏离一定的角度，仅当所述操作把手位于所述第一位置时，所述止动件抵靠所述悬挂件使所述悬挂件突出于操作把手之外。
PCT/CN2022/114159 2021-08-24 2022-08-23 园林工具 WO2023025132A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205266318U (zh) * 2016-01-07 2016-06-01 李建军 推杆伸缩装置
CN205491816U (zh) * 2016-04-05 2016-08-24 浙江三锋实业股份有限公司 割草机的安全开关结构
CN106625459A (zh) * 2017-01-03 2017-05-10 天佑电器（苏州）有限公司 伸缩推杆机构及具有该伸缩推杆机构的动力工具机
US20190307066A1 (en) * 2016-06-14 2019-10-10 Changzhou Globe Co., Ltd. Control Panel, Self-Propelled Switch Apparatus, And Power Device
CN113924865A (zh) * 2021-08-24 2022-01-14 江苏东成工具科技有限公司 园林工具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768300B1 (fr) * 1997-09-12 1999-11-26 Wolf Outils Tondeuse a gazon comportant un dispositif de securite prevenant contre l'acces a la lame de coupe en rotation
CN104584762B (zh) * 2013-11-01 2017-01-11 天佑电器（苏州）有限公司 园林工具的推杆机构
CN108811678A (zh) * 2018-08-27 2018-11-16 苏州金莱克精密机械有限公司 一种旋转式折叠机构及具有该旋转式折叠机构的割草机
CN209731958U (zh) * 2019-04-03 2019-12-06 苏州金莱克精密机械有限公司 一种推杆折叠机构及园林工具
CN210610330U (zh) * 2019-07-18 2020-05-26 南京德朔实业有限公司 手推式动力工具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205266318U (zh) * 2016-01-07 2016-06-01 李建军 推杆伸缩装置
CN205491816U (zh) * 2016-04-05 2016-08-24 浙江三锋实业股份有限公司 割草机的安全开关结构
US20190307066A1 (en) * 2016-06-14 2019-10-10 Changzhou Globe Co., Ltd. Control Panel, Self-Propelled Switch Apparatus, And Power Device
CN106625459A (zh) * 2017-01-03 2017-05-10 天佑电器（苏州）有限公司 伸缩推杆机构及具有该伸缩推杆机构的动力工具机
CN113924865A (zh) * 2021-08-24 2022-01-14 江苏东成工具科技有限公司 园林工具

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