WO2023231715A1 - 离合器及其电锤 - Google Patents

离合器及其电锤 Download PDF

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Publication number
WO2023231715A1
WO2023231715A1 PCT/CN2023/092879 CN2023092879W WO2023231715A1 WO 2023231715 A1 WO2023231715 A1 WO 2023231715A1 CN 2023092879 W CN2023092879 W CN 2023092879W WO 2023231715 A1 WO2023231715 A1 WO 2023231715A1
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WO
WIPO (PCT)
Prior art keywords
clutch
sleeve
biasing element
clutch sleeve
electric hammer
Prior art date
Application number
PCT/CN2023/092879
Other languages
English (en)
French (fr)
Inventor
蒲元维
陈果
Original Assignee
江苏东成工具科技有限公司
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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
Publication of WO2023231715A1 publication Critical patent/WO2023231715A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure

Definitions

  • the utility model relates to the field of electric tools, in particular to a clutch and an electric hammer used for drilling or chiseling on concrete, floor slabs, brick walls and stones.
  • the present utility model provides a modular clutch and its electric hammer.
  • the present utility model adopts the following technical solutions:
  • a clutch including:
  • the clutch sleeve is provided with a first engaging part
  • a clutch disc is provided in the clutch sleeve.
  • the clutch disc is provided with a second engaging portion corresponding to the first engaging portion.
  • the first engaging portion and the second engaging portion are provided on one side.
  • a holding element is provided at the end of the clutch sleeve
  • a biasing element is provided in the clutch sleeve, and both ends of the biasing element are pressed against the clutch sleeve respectively. Tray and holding elements;
  • the clutch plate and the clutch sleeve are locked with each other and rotate together or release each other.
  • the clutch disc squeezes the biasing element to deform the biasing element, and the teeth are separated from the groove. , so that the clutch plate and the clutch sleeve are clutched.
  • a further improvement is that the clutch sleeve and the clutch plate are respectively provided with a first spline groove for inputting torque to the clutch and a second spline groove for outputting torque through the clutch.
  • the clutch sleeve is integrally formed and includes a transmission part, a connecting part and a supporting part connected end to end in sequence, and the first engaging part is provided on the connecting part.
  • a further improvement is as follows: the first spline groove is provided on the outer surface of the transmission part, the first engaging part is provided on the inner surface of the transmission part, and the clutch plate, holding element and biasing element are located on the The inner side of the support part.
  • a further improvement is that the first spline groove is provided at one end of the transmission part, and the second spline groove is provided on the inner ring of the clutch plate.
  • a further improvement is that the barrel wall of the clutch sleeve is provided with a plurality of through holes, and the through holes are located in the support part.
  • a further improvement is that the opening direction of the through hole faces the biasing element.
  • a further improvement plan is that there are four through holes and they are evenly arranged along the outer circumference of the clutch sleeve.
  • a further improvement is that the biasing element is a spring, and the holding element is a circlip.
  • An electric hammer including a clutch as described in any one of the above, and a casing containing a motor, an intermediate shaft driven by the motor, and an impact system and a rotation system driven by the intermediate shaft; the rotation
  • the system includes a cylinder liner, a clutch sleeved on the cylinder liner, and a gear meshed and connected to the clutch.
  • the present utility model has the following beneficial effects: the clutch of the present utility model is provided with a clutch sleeve, which is manufactured as a whole, and the holding element, clutch plate and biasing element are arranged in the clutch sleeve or fixed At the end of the clutch sleeve, it is integrated with the clutch sleeve to form a clutch, without the need for other parts.
  • the components can be used to install, operate or disassemble the clutch as a whole; it reduces the number of parts in the corresponding electric hammer, simplifying the production and assembly process of the clutch and the electric hammer, and reducing the cost; the electric hammer is easy to disassemble and assemble, reducing relative sliding parts. components, the connection is more stable.
  • Figure 1 is a perspective view of the clutch of the present utility model
  • Figure 2 is a cross-sectional view of the clutch of the present invention in an engaged state
  • Figure 3 is a cross-sectional view of the clutch of the utility model in a released state
  • Figure 4 is a partial cross-sectional view of the electric hammer of the present utility model
  • Figure 5 is a cross-sectional view of the electric hammer of the present utility model.
  • the clutch 100 includes a clutch sleeve 110 , a clutch plate 120 , a holding element 130 and a biasing element 140 .
  • the clutch sleeve 110 is an integrally manufactured component with a hollow interior.
  • the clutch disc 120 and the biasing element 140 are provided inside the clutch sleeve 110 .
  • the holding element 130 is provided at one end of the clutch sleeve 110 for holding the biasing element. 140.
  • the holding element 130, the clutch plate 120 and the biasing element 140 are arranged in the clutch sleeve 110 or fixed at the end of the clutch sleeve 110, and are integrated with the clutch sleeve 110 to form the clutch 100.
  • the clutch 100 can be constructed without other parts. The installation, operation or disassembly of the entire unit.
  • the clutch 100 can be used in electric hammers, electric drills and other electric tools to provide safety protection for overload of the electric tool transmission system.
  • the clutch 100 is installed in the electric hammer and uses torque as the overload protection parameter, and adopts a split meshing structure.
  • the clutch sleeve 110 is provided with a first engaging portion 111
  • the clutch plate 120 is provided with a first engaging portion 111 .
  • the first engaging part 111 and the second engaging part 121 are provided with a plurality of latching teeth 112 on one side and a recess for receiving the latching teeth 112 on the other side. slot 122.
  • This embodiment uses six latching teeth 112 and corresponding six grooves 122 .
  • the clutch disc 120 and the clutch sleeve 110 hold each other, transmit torque, and rotate together; when the input torque is too large, the groove 122 and the latching teeth 112 engage with each other.
  • the teeth 112 are loosened from each other and no longer mesh, which corresponds to the loosened state of the clutch. At this time, torque is no longer transmitted between the clutch sleeve 110 and the clutch plate 120, functioning as a safety clutch.
  • the biasing element 140 is an elastic member, and is configured so that its two ends press against the clutch plate 120 and the clamping element 130 respectively, wherein the clamping element 130 is relatively fixed. Due to biased components 140 Due to the different elastic restoring forces, the clutch disc 120 and the second engaging portion 121 thereon have different relative release torque thresholds between the clutch sleeve 110 and the first engaging portion 111 thereon, so the bias pressure Element 140 may adjust and maintain the torque threshold. Therefore, the clutch plate 120 and the clutch sleeve 110 can hold each other and rotate together or release each other.
  • the clutch disc 120 squeezes the biasing element 140 to deform, and the teeth 112 are separated from the groove 122, so that the When the clutch plate 120 and the clutch sleeve 110 are engaged, the transmission of the electric tool is interrupted to protect the equipment and the user.
  • the clutch sleeve 110 is provided with a first spline groove 113 for inputting torque to the clutch 100
  • the clutch plate 120 is provided with a second spline groove 123 for outputting torque via the clutch 100
  • the input and output torques are via the clutch 100
  • the first spline groove 113 can mesh with the connected torque input components such as gears and gearboxes
  • the second spline groove 123 can mesh with the connected torque output components such as the cylinder liner 2.
  • the second spline groove 123 It is an internal spline
  • the cylinder liner 2 is provided with an engaging external spline.
  • the clutch sleeve 110 is integrally formed and includes a transmission part 114, a connection part 117 and a support part 115 connected end to end.
  • the transmission part 114, connection part 117 and support part 115 are connected end to end to transmit torque to each other.
  • the integrally formed clutch sleeve 110 facilitates design, manufacturing, processing and assembly, reduces relative friction pairs and thereby improves the reliability of the clutch 100.
  • the working torque is transmitted to the transmission part 114 through the first spline groove 113, to the supporting part 115 through the connecting part 117, and to the clutch plate 120 through the first engaging part 111.
  • the first engaging part 111 is provided on the connecting part 117, the first spline groove 113 is provided on the outer surface of the transmission part 114, the first engaging part 111 is provided on the inner surface of the transmission part 114, and the clutch plate 120 is provided on the supporting part 115 inside.
  • the clutch plate 120, the retaining element 130 and the biasing element 140 are pre-installed in the clutch sleeve 110 to facilitate the overall disassembly and assembly of the clutch 100.
  • the clutch plate 120 , the holding element 130 and the biasing element 140 are located inside the support portion 115 , and the clutch plate 120 , the holding element 130 and the biasing element 140 are vertically oriented. Projections away from the axis of the clutch sleeve 110 are all on the inner side wall of the clutch sleeve 110 .
  • the holding element 130 is located inside the end of the supporting part 115
  • the clutch plate 120 can be located inside the other end of the supporting part 115
  • the biasing element 140 is located inside the supporting part 115 and between the holding element 130 and the clutch plate 120 between.
  • the first spline groove 113 is provided at one end of the transmission part 114
  • the second spline groove 123 is provided at the inner ring of the clutch plate 120
  • the other end of the transmission part 114 is connected to the support part 115 through the connection part 117.
  • the connection part 117 is provided with the above-mentioned first engaging portion 111.
  • the first engaging portion 111 can be provided with a plurality of teeth 112 protruding from the transmission portion 114 toward the supporting portion 115 along the axial direction of the clutch sleeve 110 at the connection point, or a plurality of grooves 122 can be formed by being recessed inward.
  • the wall surface of the clutch sleeve 110 is thickened at the connection between the transmission part 114 and the supporting part 115 to enhance the structural strength and prevent the clutch sleeve 110 from being damaged during the engagement and disengagement processes between the clutch disc 120 and the clutch sleeve 110 .
  • the clutch 100 is in a relatively closed state during operation, and the interior of the clutch sleeve 110 such as the biasing element 140, the clamping and the groove 122 need lubrication and heat dissipation.
  • the barrel wall of the clutch sleeve 110 is provided with a number of through holes 116 to facilitate grease to enter the inside of the clutch sleeve 110 for lubrication and heat dissipation.
  • the through hole 116 is located in the support portion 115, and is preferably set so that the opening direction faces the biasing element 140. The through hole 116 is not easily blocked, and the biasing element 140 has better lubrication and heat dissipation effects.
  • a further improvement plan is to set four through holes 116 and arrange them evenly along the outer circumference of the clutch sleeve 110, so that the grease enters and exits the clutch 100 more smoothly.
  • the clutch 100 can also directly dissipate heat through the through holes 116, and the heat dissipation is better. Evenly.
  • the biasing element 140 is a spring
  • the holding element 130 is a circlip.
  • the circlip is arranged around the inner wall surface of the clutch sleeve 110 and blocks the spring.
  • a gasket 131 can be provided between the circlip and the spring, and the thickness of the gasket 131 can be used to adjust the spring force value, thereby adjusting the torque threshold for the clutch 100 to release.
  • An embodiment of the present utility model also relates to an electric hammer.
  • the electric hammer includes a casing 1, a chuck assembly 8 installed in the front of the casing 1, and a handle 9 located in the rear of the casing 1. 9 handles It is provided with a switch 10 for controlling the start and stop of the electric hammer, a lever 12 for adjusting the inward feeding or outward pullout of the electric hammer or the locking function of the switch 10, and a shock absorbing bracket 11 for shock absorption.
  • the casing 1 contains a motor 7, an intermediate shaft driven by the motor 7, and an impact system and a rotation system driven by the intermediate shaft.
  • the chuck assembly 8 is used to clamp the drill bit, and the motor 7 is used as a power source to provide power.
  • the intermediate shaft transmits the power of the motor 7 to the impact system and the rotation system.
  • the impact system and the rotation system transmit the impulse power and rotation power to the chuck assembly. 8. Then the drill bit performs rotational impact output.
  • the rotating system includes a cylinder liner 2 and the above-mentioned clutch 100 sleeved on the cylinder liner 2.
  • the clutch plate 120 and the cylinder liner 2 are spline-connected through a second spline groove 123.
  • the clutch sleeve 110 can be connected through a transmission gear or a shaft. Or the gearbox is connected to the output end of the motor.
  • the impact system includes an oscillator 4, a cylinder 3, a hammer 5 and an impact connecting rod 6.
  • the oscillating device 4 is sleeved on the intermediate shaft and has a swing rod for swing output.
  • the cylinder 3 is slidably installed in the cylinder liner 2 and connected to the swing rod.
  • the ram 5 is slidably installed in the cylinder 3 and the impact connecting rod 6 is slidably installed.
  • the oscillator 4 drives the cylinder 3 to reciprocate, and the compressed air ejects the ram 5.
  • the ram 5 impacts the impact connecting rod 6, and the impact connecting rod 6 transmits the impact force to the drill bit for impact output.
  • the electric hammer is a portable electric hammer that can be installed with a battery pack (not shown in the figure).
  • the battery pack can be installed on the bottom of the handle 9 through the battery pack installation guide rail 13 .
  • the circuit board 14 that controls the operation of the electric hammer is located at the bottom of the casing 1 and is electrically connected to the motor 7, battery pack, switch 10, etc. respectively.
  • the electric hammer can also be connected with external accessories such as a dust collection device.
  • the dust suction port can be located in the front of the casing 1, and the external power supply and signal source interface can be connected to the circuit board 14 at the bottom of the casing 1.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

一种离合器和电锤，其中，离合器包括：离合套筒，设有第一卡合部；离合盘，设于所述离合套筒内；卡持元件，设于所述离合套筒端部；偏压元件，设于所述离合套筒内；所述离合盘与离合套筒相互扣持共同旋转或相互脱扣，脱扣时，所述偏压元件发生形变，所述卡齿与凹槽分离，以使所述离合盘与离合套筒脱离。离合器无需其他零部件可进行离合器整体的安装、运行或拆卸；减少了相应电锤中零部件的数量，使离合器和电锤的生产与装配工艺简化、成本降低；电锤拆装便捷，减少了相对滑动的零部件，连接更稳定。

Description

离合器及其电锤 [技术领域]
本实用新型涉及电动工具领域，特别涉及一种离合器及用来在混凝土、楼板、砖墙和石材上钻孔或凿击的电锤。
[背景技术]
电锤在凿击工作时，经常遇到有钢筋的墙体，正转的钻头遇到钢筋的瞬间被卡住，操作者瞬间感受到电锤巨大的反向扭力，此时的操作者容易被电锤扭伤。为了防止出现上述伤人现象，现有的电锤中大多配置有离合器，正转的钻头被卡死时，离合器使得电锤的电机驱动与钻头运动分离，此时电机处于空转状态，操作者仅感受到较小的电锤反向扭力。
但是随着离合器等组件的增加，电锤中零部件数量相应增多，电锤的生产工艺更加复杂、成本更高；电锤的安装愈发繁琐，容易出现装配不良的情况；相对滑动的部件也增多，导致电锤整体系统的可靠性降低。
[实用新型内容]
为解决上述问题，本实用新型提供一种模块化的离合器及其电锤。
为解决上述技术问题，本实用新型采用如下技术方案：
一种离合器，包括：
离合套筒，设有第一卡合部；
离合盘，设于所述离合套筒内，所述离合盘设有与所述第一卡合部对应设置的第二卡合部，所述第一卡合部和第二卡合部一方设有数个卡齿、另一方设有收容所述卡齿的凹槽；
卡持元件，设于所述离合套筒端部；
偏压元件，设于所述离合套筒内，所述偏压元件两端分别抵压于所述离合 盘和卡持元件；
其中，所述离合盘与离合套筒相互扣持共同旋转或相互脱扣，脱扣时，所述离合盘挤压所述偏压元件使偏压元件发生形变，所述卡齿与凹槽脱离，以使所述离合盘与离合套筒发生离合。
进一步改进方案为：所述离合套筒和离合盘分别设有向所述离合器输入扭矩的第一花键槽和经所述离合器输出扭矩的第二花键槽。
进一步改进方案为：所述离合套筒一体成型，包括依次首尾相连的传动部、连接部及支持部，所述第一卡合部设置于所述连接部。进一步改进方案为：所述第一花键槽设于所述传动部外表面，所述第一卡合部设于所述传动部内表面，所述离合盘、卡持元件和偏压元件位于所述支持部内侧。
进一步改进方案为：所述第一花键槽设于所述传动部的一端，所述第二花键槽设于所述离合盘内圈。
进一步改进方案为：所述离合套筒的筒壁设有若干通孔，所述通孔位于所述支持部。
进一步改进方案为：所述通孔开口方向正对所述偏压元件。
进一步改进方案为：所述通孔有四个，并沿所述离合套筒外周均匀排布。
进一步改进方案为：所述偏压元件为弹簧，所述卡持元件为卡簧。
一种电锤，包括如上述任一项所述的离合器，包括机壳，所述机壳内容纳有电机、由电机驱动的中间轴及由中间轴驱动的冲击系统与旋转系统；所述旋转系统包括气缸套、套设于气缸套上的离合器与啮合连接于所述离合器的齿轮。
与现有技术相比本实用新型具有如下有益效果：本实用新型的离合器设置离合套筒，离合套筒为整体制造，卡持元件、离合盘和偏压元件通过设于离合套筒内或固定在离合套筒端部，与离合套筒集成设置形成离合器，无需其他零 部件可进行离合器整体的安装、运行或拆卸；减少了相应电锤中零部件的数量，使离合器和电锤的生产与装配工艺简化、成本降低；电锤拆装便捷，减少了相对滑动的零部件，连接更稳定。
[附图说明]
下面结合附图对本实用新型的具体实施方式做进一步详细的说明:
图1是本实用新型离合器的立体图；
图2是本实用新型离合器啮合状态下的剖视图；
图3是本实用新型离合器松脱状态下的剖视图；
图4是本实用新型电锤的局部剖视图；
图5是本实用新型电锤的整机剖视图。
图中附图标记的含义：
离合器           100     离合套筒         110
第一卡合部       111     卡齿             112
第一花键槽       113     传动部           114
支持部           115     通孔             116
连接部           117     离合盘           120
第二卡合部       121     凹槽             122
第二花键槽       123     卡持元件         130
垫片             131     偏压元件         140
机壳             1       气缸套           2
气缸             3       摆动器           4
冲锤             5       冲击连杆         6
电机             7       夹头组件         8
把手             9       开关             10
减震支架         11      拨杆             12
电池安装导轨     13      线路板           14
[具体实施方式]
在本实用新型中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本实用新型。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，仅为了便于描述本实用新型和简化描述，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实用新型的限制。
请参阅图1至图3所示为本实用新型实施例涉及的一种离合器100，离合器100包括离合套筒110、离合盘120、卡持元件130和偏压元件140。离合套筒110为一体制造、内部中空的构件，其中，离合盘120和偏压元件140设于离合套筒110内，卡持元件130设于离合套筒110一端，用于卡固偏压元件140。卡持元件130、离合盘120和偏压元件140通过设于离合套筒110内或固定在离合套筒110端部，与离合套筒110集成设置形成离合器100，无需其他零部件可进行离合器100整体的安装、运行或拆卸。
离合器100可应用于电锤、电钻等电动工具中，为电动工具传动系统的过载提供安全保护。本实施例中，离合器100安装于电锤内并以转矩为过载保护参数，采用分体啮合式结构，具体的，在离合套筒110设有第一卡合部111，在离合盘120设有与第一卡合部111对应设置的第二卡合部121，第一卡合部111和第二卡合部121一方设有数个卡齿112、另一方设有收容上述卡齿112的凹槽122。本实施方式采用六个卡齿112及对应六个凹槽122。通过凹槽122和卡齿112的啮合，对应离合器的啮合状态，此时离合盘120与离合套筒110相互扣持、传递扭矩、共同旋转；当输入的扭矩过大时，凹槽122和卡齿112彼此间松脱不再啮合，对应离合器的松脱状态，此时离合套筒110和离合盘120间不再传递扭矩，起到安全离合的作用。偏压元件140为弹性件，被设置为两端分别抵压于离合盘120和卡持元件130，其中卡持元件130相对固定。因受偏压元件 140不同的弹性恢复力的作用，离合盘120及其上的第二卡合部121相对和离合套筒110及其上的第一卡合部111间的松脱的扭矩阈值不同，则偏压元件140可调节和维持该扭矩阈值。故而，离合盘120与离合套筒110可相互扣持共同旋转或相互脱扣，脱扣时，离合盘120挤压偏压元件140使其发生形变，卡齿112与凹槽122脱离，以使离合盘120与离合套筒110发生离合，电动工具的传动中断，以保护设备及用户。
在本实施方式中，离合套筒110设有向离合器100输入扭矩的第一花键槽113，离合盘120设有经离合器100输出扭矩的第二花键槽123，输入和输出的扭矩为经离合器100所传递的电动工具的工作扭矩。其中，第一花键槽113可与所连接的扭矩输入组件如齿轮和齿轮箱啮合，第二花键槽123可与所连接的扭矩输出组件如气缸套2啮合，如通过将第二花键槽123设为内花键，气缸套2上设有相啮合的外花键。
在本实施方式中，离合套筒110一体成型，其包括依次首尾相连的传动部114、连接部117和支持部115，传动部114、连接部117和支持部115首尾相连，彼此传递扭矩。一体成型的离合套筒110便于设计制造、加工组装，减少了相对摩擦副从而提高离合器100可靠性。工作中的扭矩经第一花键槽113传递给传动部114，经连接部117传递给支持部115，并经第一卡合部111传递给离合盘120。其中，第一卡合部111设于连接部117上，第一花键槽113设于传动部114外表面，第一卡合部111设于传动部114内表面，离合盘120设于支持部115内侧。
离合盘120、卡持元件130和偏压元件140预安装于离合套筒110中，以便于离合器100整体拆装。在本实施方式中，离合盘120、卡持元件130和偏压元件140位于支持部115内侧，离合盘120、卡持元件130和偏压元件140向垂直 远离离合套筒110轴线方向的投影均在离合套筒110的内侧壁面上。具体的，卡持元件130位于支持部115端部内侧，离合盘120可设于支持部115另一端端部内侧，偏压元件140位于支持部115内侧且处于卡持元件130和离合盘120之间。
在本实施方式中，第一花键槽113设于传动部114的一端，第二花键槽123设于离合盘120内圈，传动部114的另一端通过连接部117与支持部115相连，连接部117设置上述第一卡合部111。具体的，第一卡合部111可通过在连接处沿离合套筒110轴向方向由传动部114向支持部115方向凸出设置若干卡齿112、或向内凹陷形成若干凹槽122。作为优选，离合套筒110在传动部114和支持部115的连接处壁面增厚，以增强结构强度，防止离合盘120与离合套筒110在啮合和脱离过程损坏离合套筒110。
离合器100在工作时处于相对封闭状态，离合套筒110内部如偏压元件140、卡持和凹槽122等需要润滑和散热。在本实施方式中，离合套筒110的筒壁设有若干通孔116，以便于油脂进入离合套筒110内侧，进行润滑和散热。通孔116位于支持部115，且优选的，设置为开口方向正对偏压元件140，通孔116不易被阻塞，偏压元件140的润滑和散热效果更好。进一步改进方案为，可将通孔116设置为四个，并沿离合套筒110外周均匀排布，油脂进、出离合器100更为通畅，离合器100也可通过通孔116直接散热，散热更为均匀。
在本实施方式中，偏压元件140为弹簧，卡持元件130为卡簧，卡簧环绕设于离合套筒110内侧壁面，卡住弹簧。卡簧和弹簧间可设置垫片131，并可利用垫片131厚度调节弹簧力值，进而调整离合器100松脱的扭矩阈值。
请进一步参考图4、图5，本实用新型的实施例还涉及一种电锤。电锤包括机壳1、安装于机壳1前方的夹头组件8和设于机壳1后方的把手9。把手9处 设有操纵电锤启停的开关10、调整电锤向内进给或向外拔出或开关10锁定功能的拨杆12以及用于减震的减震支架11。机壳1内容纳有电机7、由电机7驱动的中间轴及由中间轴驱动的冲击系统与旋转系统。其中，夹头组件8用于夹持钻头，电机7作为动力源提供动力，中间轴将电机7动力传递给冲击系统和旋转系统，冲击系统与旋转系统将冲力动力与旋转动力传递给夹头组件8，进而钻头进行旋转冲击输出。
旋转系统包括气缸套2及套设于气缸套2上的上述离合器100，其中离合盘120与气缸套2之间通过第二花键槽123花键连接相连，离合套筒110可通过传动齿轮、轴或齿轮箱与电机输出端相连，当离合盘120或离合套筒110所受扭矩过大会彼此松脱，使旋转系统传动中断，防止对设备和人员造成损伤。冲击系统包括摆动器4、气缸3、冲锤5及冲击连杆6。摆动器4套设于中间轴上并具有用于摆动输出的摆杆，气缸3滑动设置于气缸套2内并连接于摆杆，冲锤5滑动设置于气缸3内，冲击连杆6滑动设置于气缸套2内，摆动器4带动气缸3往复运动，并压缩空气弹射冲锤5，冲锤5冲击冲击连杆6，冲击连杆6将冲击力传递给钻头进行冲击输出。
在本实施方式中，电锤为可安装电池包(图中未示出)的便携式电锤，电池包可通过电池包安装导轨13安装于把手9底部。控制电锤运行的线路板14设于机壳1底部，分别与电机7、电池包、开关10等电性连接。电锤还可外接吸尘装置等配件，其吸尘口可设于机壳1前方，外接电源及信号源接口则可与线路板14在机壳1底部接插导通。
本实用新型不局限于上述具体实施方式，本实用新型的保护范围以权利要求书的内容为准。

Claims (10)

  1. 一种离合器，其特征在于：包括：
    离合套筒，设有第一卡合部；
    离合盘，设于所述离合套筒内，所述离合盘设有与所述第一卡合部对应设置的第二卡合部，所述第一卡合部和第二卡合部一方设有数个卡齿、另一方设有收容所述卡齿的凹槽；
    卡持元件，设于所述离合套筒端部；
    偏压元件，设于所述离合套筒内，所述偏压元件两端分别抵压于所述离合盘和卡持元件；
    其中，所述离合盘与离合套筒相互扣持共同旋转或相互脱扣，脱扣时，所述离合盘挤压所述偏压元件使偏压元件发生形变，所述卡齿与凹槽脱离，以使所述离合盘与离合套筒发生离合。
  2. 根据权利要求1所述的离合器，其特征在于：所述离合套筒和离合盘分别设有向所述离合器输入扭矩的第一花键槽和经所述离合器输出扭矩的第二花键槽。
  3. 根据权利要求2所述的离合器，其特征在于：所述离合套筒一体成型，包括依次首尾相连的传动部、连接部及支持部，所述第一卡合部设置于所述连接部。
  4. 根据权利要求3所述的离合器，其特征在于：所述第一花键槽设于所述传动部外表面，所述第一卡合部设于所述传动部内表面，所述离合盘、卡持元件和偏压元件位于所述支持部内侧。
  5. 根据权利要求3所述的离合器，其特征在于：所述第一花键槽设于所述传动部的一端，所述第二花键槽设于所述离合盘内圈。
  6. 根据权利要求4所述的离合器，其特征在于：所述离合套筒的筒壁设有 若干通孔，所述通孔位于所述支持部。
  7. 根据权利要求6所述的离合器，其特征在于：所述通孔开口方向正对所述偏压元件。
  8. 根据权利要求6所述的离合器，其特征在于：所述通孔有四个，并沿所述离合套筒外周均匀排布。
  9. 根据权利要求1所述的离合器，其特征在于：所述偏压元件为弹簧，所述卡持元件为卡簧。
  10. 一种电锤，包括如权利要求1-9中任一项所述的离合器，其特征在于：包括机壳，所述机壳内容纳有电机、由电机驱动的中间轴及由中间轴驱动的冲击系统与旋转系统；所述旋转系统包括气缸套、套设于气缸套上的所述离合器与啮合连接于所述离合器的齿轮。
PCT/CN2023/092879 2022-05-31 2023-05-09 离合器及其电锤 WO2023231715A1 (zh)

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