WO2002092289A1 - Cle d'impact electrique - Google Patents

Cle d'impact electrique Download PDF

Info

Publication number
WO2002092289A1
WO2002092289A1 PCT/CN2001/000890 CN0100890W WO02092289A1 WO 2002092289 A1 WO2002092289 A1 WO 2002092289A1 CN 0100890 W CN0100890 W CN 0100890W WO 02092289 A1 WO02092289 A1 WO 02092289A1
Authority
WO
WIPO (PCT)
Prior art keywords
flywheel
ratchet
shaft
ratchet block
block
Prior art date
Application number
PCT/CN2001/000890
Other languages
English (en)
French (fr)
Inventor
Houxiang Lai
Houxuan Lai
Yubin Xiao
Ronghua Hu
Original Assignee
Houxiang Lai
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 Houxiang Lai filed Critical Houxiang Lai
Publication of WO2002092289A1 publication Critical patent/WO2002092289A1/zh

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket

Definitions

  • the present invention relates to an electric tool, and particularly to an electric wrench.
  • a power tool wrench for screwing or loosening a screw or nut can play a related role, but the disadvantages include: both are driven by AC power and cannot be used without AC power; power It is small and difficult to meet certain tightening requirements. It cannot be tightened for bolts larger than 12 cm and cannot be loosened for long rusted bolts. It has high labor intensity, large inertia and throwing force, and is inconvenient to operate.
  • the purpose of the present invention is to provide an electric impact wrench, which adopts a DC working power supply, has a small input power (10 watts of no-load power, 80 watts of full-load power), large torque, light weight, convenient operation, simple and safe, and low labor intensity. Characteristics, suitable for mobile, field operations (such as changing car tires, etc.), strong practicability.
  • the electric impact wrench has a handle shell, and a power cord is connected to the bottom end of the handle.
  • the structural feature is that a DC motor is installed at the rear end of the shell, and the motor is connected to the power source through a power reversing switch.
  • the motor shaft with bearings is connected to the flywheel shaft on one side of the flywheel.
  • the flywheel shaft is provided with an automatic separation from the person that can be placed in a shield and can slide axially.
  • two or more fan-shaped blocks of the same shape and size are enclosed on the circumference of the sliding sleeve by a hoop hoop placed in the bottom spring groove, and is mounted on the flywheel shaft and in the sliding sleeve shaft hole.
  • the flywheel has 1 to 6 ratchet block grooves evenly distributed along the circumference. Each ratchet block groove is hinged to the ratchet block via a hinge pin and a hinge hole located in the middle of the ratchet block.
  • the flywheel body on one side of the flywheel shaft is provided with The ratchet block stop pin hole, one end of the corresponding ratchet block stop pin is connected to one end of the sliding sleeve of the automatic clutch and is at the same radial height as the spring coil of the pressure spring, and the other of the ratchet block stop pin is inserted into the corresponding ratchet.
  • the stop pin hole of the block extends to the lower part of the arcuate end of the ratchet block.
  • One end of the main shaft installed in the sleeve and equipped with a bearing with a retaining ring extends from the front end of the housing and the end is a connecting end that can be connected to a universal cylinder.
  • the other end is provided with ratchet teeth uniformly distributed along the circumference and the number of which is the same as the number of the ratchet block grooves.
  • the ratchet teeth are located in the flywheel and are on the same axis as the ratchet blocks.
  • FIG. 1 is an overall sectional structural view of the present invention
  • Fig. 2 is a perspective structural view of each component in the housing in a separated state
  • Fig. 3 is a perspective structural view of an automatic clutch member in a separated state
  • Fig. 4 is a front view structure of the sector block
  • Fig. 5 is a cross-sectional structure taken along A-A in Fig. 4;
  • FIG. 6 is a front view structure of an embodiment of a ratchet block
  • FIG. 7 is a cross-sectional view taken along the line B-B in FIG. 6;
  • FIG. 8 is a front structural diagram of a flywheel
  • Fig. 9 is a sectional structural view taken along the line C-C in Fig. 8;
  • Fig. 10 is a sectional structural view taken along the D-D direction in Fig. 9;
  • Figure 11 is a front view structural view of the main shaft
  • FIG. 12 is an E-view of the component shown in FIG. 11;
  • Figure 13 is a circuit connection schematic.
  • the present invention has a housing (16) with a handle (21), and a power connection (22) is provided at the bottom of the handle (21); the design feature is that the rear end of the housing (6) is provided DC motor (14), the motor (14) is connected to the power supply wiring (22) via a power reversing switch (23) (see Figure 15 for the circuit connection diagram); the power reversing switch (23) (already (Technical products)
  • the functions include turning on and off the power supply and changing the connection between the positive and negative poles of the power supply and the motor to achieve forward and reverse rotation of the motor; the motor shaft (15) with bearings (13) is the same as the flywheel (5).
  • the flywheel shaft (17) is connected with the flywheel shaft (17).
  • the automatic clutch (9) has a sliding sleeve (18) and two or more (such as at most 20) sector blocks (20) of the same shape and size (the sector blocks in FIG. 3) Is three); the structure of an embodiment of a single sector block (20) is shown in Figs. 4 and 5; each sector block (20) is placed on its bottom spring groove (24) (see Fig. 5) hoop A spring (19) (see Figures 1 and 3) is hooped around the circumference of the sliding sleeve (18), and a compression spring (10) is installed on the flywheel shaft (17) and located in the shaft hole of the sliding sleeve (18).
  • the flywheel (5) has 1 to 6 ratchet grooves evenly distributed along the circumference (2 ratchet grooves in Figs. 2 and 8), and each of the ratchet grooves passes the hinge pin (7) shown in Fig. 2
  • the hinge hole (25) (see Fig. 6) located in the middle of the ratchet block are respectively hinged with the ratchet block, and the flywheel body at both ends of each ratchet block slot and on the flywheel shaft (17) side is provided with a ratchet block pin hole ( 26) (see FIG. 8), one end of the corresponding ratchet stop pin (8) is connected to the sliding sleeve (18) of the automatic clutch (9) at one end and the coil body of the pressure spring (10) is located in FIG. 1.
  • the connected connection structure can be as follows: the neck at the right end of the pin (8) (see FIG. 2) can be snapped into the pin groove (29) at the end of the sliding sleeve (18) in FIG. 3; the ratchet stop pin (8) The other end is inserted into the corresponding ratchet block stop pin hole (26) and extends to the lower part of the curved end of the ratchet block (6).
  • the ratchet tooth (30) is located in the flywheel (5) and is in the same axial position as the ratchet block (6) shown in FIG. 1 (that is, the ratchet block (6) can impact the ratchet tooth).
  • the shield (11) can be positioned on the flywheel shaft (17) by a snap spring (12).
  • the switch (23) can turn on the DC power supply and change the connection between the DC motor (14) and the positive and negative poles of the power supply according to needs, thereby achieving forward rotation or reverse rotation;
  • the other end of the ratchet stop pin (8) connected to the sliding sleeve (18) of the automatic clutch (9) is inserted into the pin hole of the flywheel (5) under the thrust of the spring (10).
  • the above structure and working principle cause the main shaft of the present invention to generate a strong rotational impact torque, and can rotate a bolt with a large diameter and a bolt that has been rusted for a long time.
  • the present invention is an electric impact wrench which uses a DC working power source, so it can use a vehicle DC power supply or a small battery (12V7AH or more) to perform field and mobile operations without the need for AC power.
  • a vehicle DC power supply or a small battery (12V7AH or more) are particularly suitable for accompanying car maintenance.
  • Replacement of tires, high-altitude towers and other operations can become universal wrenches by replacing the front sleeve.
  • Figure 1 shows the actual device structure. The bearing (13) and the motor (14) and the shaft sleeve (1) are fixed in a housing (16).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

电动冲击扳手
本发明涉及电动工具, 具体是指一种电动扳手。 现有技术中, 用于螺杆、 螺帽旋紧或旋松的电动 工具扳手 ί 能起到相关作用, 但存在的缺陷包括: 均 为交流电源驱动, 在无交流电源的情况下无法使用; 功率较小, 难以达到一定的紧固要求, 对于 12 厘米以 上的螺栓无法紧固且对生锈已久的螺栓无法松开; 劳 动强度大, 惯性与甩力大, 不便操作。
本发明的目的是, 提供一种电动冲击扳手, 它采 用直流工作电源, 具有输入功率小(空载功率 10 瓦,满 载功率 80瓦)扭矩大、 重量轻、 操作方便简捷且安全、 劳动强度小的特点, 适于流动、 野外作业 (如更换汽 车轮胎等), 实用性强。
本发明的技术方案是, 所述电动冲击扳手有 手 柄的外壳, 手柄底端有电源接线 , 其结构特点是 所 述外壳后端装有直流电动机, 该电动机经电源换向开 关同所述电源接线相连接, 装有轴承的电动机轴同飞 轮一侧的飞轮轴相联接 , 所述飞轮轴上装有一个置于 护罩中并可作轴向滑动的自动离人 與 该自动离 1=1 有滑套和 2 个或 2 个以上相同形状与大小的扇形块, 各扇形块经置于其底部簧槽中的箍簧箍围在滑套圆周 上, 在飞轮轴上且位于滑套轴孔中装有压力弹簧, 飞 轮上有沿圆周均匀分布的 1〜6 个棘块槽, 各棘块槽中 经铰接销和位于棘块中部的铰接孔分别铰接了棘块, 各棘块槽两端且位于飞轮轴一侧的飞轮体上分别设有 棘块止动销孔, 相应的棘块止动销的一端同自动离合 器的滑套一端相连接且与所述压力弹簧的簧圈 处于相 同径向高度 所述棘块止动销的另一 ***相应的棘 块止动销孔并伸至棘块的弧形端下部, 装在轴套中并 装有带挡圈之轴承的主轴一端伸出外壳前端且该端为 可连接通用 筒的连接端 , 所述主轴的另一端设有沿 圆周均匀分布且其个数与所述棘块槽数量相同的棘 齿, 所述棘齿位于飞轮中并与所述棘块处在相同的轴 以下结合附图做出进一步说明。
附图说明:
图 1 是本发明的整体剖视结构图;
图 2是外壳中各构件呈分离状态的立体结构图; 图 3是自动离合器构件为分离状态的立体结构; 图 4是所述扇形块的正视结构;
图 5是图 4中 A-A剖视结构;
图 6是棘块的实施例主视结构;
图 7是图 6中 B-B向剖视结构;
图 8是飞轮的正视结构图;
图 9是图 8中 C-C向剖视结构图;
图 10是图 9中 D-D向剖视结构图;
图 1 1是主轴的正视结构图;
图 12是图 1 1所示构件的 E向视图;
图 13是电路连接原理图。
在所述附图中: 1-轴套, 6-棘块,
2-挡圈, 7-铰接销
3-轴承, 8-棘块止动销,
4-主轴, 9-自动离合器,
5-飞轮, 10-压力弹簧,
11-护罩, 25-铰接孔,
12-卡簧, 26-棘块止动销孔,
13-轴承, 27-铰接孔,
14-直流电动机, 28-卡簧槽,
15-电动机轴, 29-连接端,
16-外壳, 30-棘齿,
17-飞轮轴 18-滑套,
19-箍簧, 20-扇形块,
21-手柄, 22-电源接线,
23-电源换向开关, 24-簧槽,
由图 1 和图 2 可知, 本发明有带手柄 (21) 的外 壳 ( 16), 手柄 (21) 底端有电源接线 (22); 其设计 特点是, 所述外壳 (6) 后端装有直流电动机 ( 14), 该电动机 ( 14) 经电源换向开关 (23) 同所述电源接 线 (22) 相连接 (电路连接图参见图 15); 所述电源换 向开关 (23) (已有技术产品) 的功能包括接通与切断 电源以及变换电源正负极与电动机的连接而实现电动 机正转与反转; 装有轴承 ( 13) 的电动机轴 ( 15) 同 飞轮 (5) —侧的飞轮轴 ( 17) 相联接, 飞轮轴 ( 17) 上装有一个置于护罩 ( 11) 中并可作轴向滑动的自动 离合器 (9); 参见图 3, 该自动离合器 (9) 有滑套 ( 18) 和 2个或 2 个以上 (如至多 20个) 相同形状与大小的 扇形块(20) (图 3中扇形块为三个); 单个扇形块 (20) 的一种实施例结构如图 4 和图 5 所示; 各扇形块 (20) 经置于其底部簧槽(24) (参见图 5)种的箍簧( 19) (参 见图 1、 图 3) 箍围在滑套 ( 1 8 ) 圆周上, 在飞轮轴 ( 1 7 )上且位于滑套( 18)轴孔中装有压力弹簧( 10), 飞轮 (5) 上有沿圆周均匀分布的 1〜6 个棘块槽 (图 2 及图 8 中为 2 个棘块槽), 各棘块槽中经图 2 中所示的 铰接销 (7) 和位于棘块中部的铰接孔 (25) (参见图 6) 分别铰接了棘块, 各棘块槽两端且位于飞轮轴 ( 17) 一侧的飞轮体上分别设有棘块止动销孔 (26) (参见图 8), 相应的棘块止动销 ( 8) 的一端同自动离合器 (9) 的滑套 ( 18) —端相连且所述压力弹簧 ( 10) 的簧圈 体处于图 1 所示的相同径向高度 (即所述销 (8) ·作轴 向移动时可顶及弹簧 ( 10) 的顶端簧圈); 而此处所述 棘块止动销 (8) 的一端同滑套 ( 18) —端相连接的连 接结构可以是, 将销 (8) 右端的颈部 (参见图 2) 卡 入图 3 中滑套 ( 18) —端的销槽 (29) 中即可; 棘块 止动销 ( 8) 的另一端***相应的棘块止动销孔 (26) 中并伸至棘块 ( 6) 的弧形端下部, 装在轴套 ( 1) 中 并装有带挡圈 (2) 之轴承 (3) 的主轴 (4) 的一端伸 出外壳 ( 16) 前端且该端为图 11 所示的可以连接通用 套筒的连接端 (29) (例如该端为常见的方头), 所述 主轴 (4) 的另一端设有如图 11 和图 12 所示的沿圆周 均匀分布且其个数与所述棘块槽数量相同 的棘齿
( 30), 所述棘齿 ( 30) 位于飞轮 ( 5) 中并与所述棘 块 (6) 处在图 1 所示的相同轴向位置 (即棘块 (6) 可冲击到所述棘齿)。 如图 1 所示, 所述护罩 ( 11) 可 用卡簧 ( 12) 定位在飞轮轴 ( 17) 上。
本发明的设计原理是(参见图 1与图 2), 开关(23) 可将直流电源接通并根据需要变换直流电动机 ( 14) 与电源正、 负极的连接, 从而实现正转或反转; 电动 机 ( 14) 起动前, 一端与自动离合器 (9) 的滑套 ( 18) 相连的棘块止动销 (8) 的另一端在弹簧 ( 10) 的推力 作用下***飞轮 ( 5) 的销孔 (26) 中, 使棘块 ( 6) 不能绕铰接销 (7) 转动 (以销 (7) 为轴心两边摆动), 此时飞轮 ( 5) 随电动机轴 ( 15) 转动而主轴 (4) 不 产生转动; 当飞轮 (5) 随电动机 ( 14) 转速同步增加 到一定转速时, 随飞轮 (5) —同转动的自动离合器 (9) 的多个扇形块 (20) 就在离心力作用下克服箍簧 ( 19) 的箍紧力而自动张开, 这种张开一旦产生就使所述离 合器 (9) 整体产生图 1 中的向右作轴向移动, 则棘块 止动销 (8) 会克服弹簧 ( 10) 的作用力而发生向右的 轴向移动以从飞轮 (5) 的销孔 (26) 中退出, 使棘块
( 6) 失去其约束而在飞轮 ( 5) 的旋转过程中冲击所 述主轴 (4) 的棘齿 (30), 使主轴 (4) 产生冲击性旋 转, 其旋转方向与电动机轴的转动方向一致, 从而实 现电动冲击扳手之功能。 当电动机 ( 14) 转速下降或 停止转动时, 止动销 (8) 会在弹簧 ( 10) 推力作用下 并在旋转过程中***所述销孔 ( 2 6 ), 即复位 o 所述 轴套 ( 1)、 轴承 ( 13)、 电动机 ( 14) 固定安装在外壳
( 16) 中。
上述结构及工作原理, 使本发明的主轴产生很强 的旋转冲击力矩, 可旋动较大直径螺栓及生锈已久的 螺栓。
由以上可知, 本发明为一种电动冲击扳手 它采 用直流工作电源, 因而可利用车载直流电源或小型 电池 ( 12V7AH 以上) 等在无需交流电源条件下进行野 外、 流动作业, 高空作业具有体积小 、 重里轻 、 功率 大、 操作安全方便以及劳动强度小等特点 尤其适于 随行汽车维修, 更换轮胎、 高空塔架等作业 只要更 换前端套筒则成为万能扳手。
实施例: 按照附图和上述结构的本发明产品 采 用直流 12伏电源 (直流 24伏、 48伏均可); 外壳 ( 16) 为尼龙加 30%纤维成型的对开结构, 用 M4 自攻螺钉连 接成整体, 棘块 (6) 及棘齿 (30) 均为 2 个, 图 1 为 实际装置结构。 所述轴承 ( 13) 和电动机 ( 14) 以及 轴套 ( 1) 固定在外壳 ( 16) 中。

Claims

权 利 要 求
1、 一种电动冲击扳手, 有带手柄 ( 2 1 ) 的外壳 ( 16), 手柄 ( 2 1 ) 底端有电源接线 ( 2 2 ), 其特 征是, 所述外壳 ( 6 ) 后端装有直流电动机 ( 1 4 ) , 它经电源换向幵关 ( 2 3 ) 同所述电源接线 ( 2 ) 相连 接, 装有轴承 ( 1 3 ) 的电动机轴 ( 1 5 ) 同飞轮 (5) 一侧的飞轮轴 ( 1 7 ) 相联接, 飞轮轴 ( 1 7 ) 上装 有一个置于护罩 ( 1 1 ) 中并可作轴向滑动的自动离 合器 ( 9 ); 该自动离合器 ( 9 ) 有滑套 ( 18) 和 2 个 或 2个以上相同形状与大小的扇形块 ( 2 0 ); 各扇形 块 ( 2 0 ) 经置于其底部簧槽 ( 2 4 ) 中的箍簧 ( 1 9 ) 箍围在滑套 ( 1 8 ) 圆周上, 在飞轮轴 ( 1 7 ) 上且位于滑套 ( 1 8 ) 轴孔中装有压力弹簧 ( 1 0 ), 飞轮 (5) 上有沿圆周均匀分布的 1〜6 个棘块槽, 各棘 块槽中经铰接销 (7) 和位于棘块中部的铰接孔 ( 2 5 ) 分别铰接了棘块 ( 6 ), 各棘块槽两端且位于飞轮轴 ( 1 7 ) 一侧的飞轮体上分别设有棘块止动销孔 ( 2 6 ), 相应的棘块止动销( 8 )的一端同自动离合器( 9 ) 的滑套 ( 1 8 ) —端相连且与所述压力弹簧 ( 1 0 ) 的簧圈体处在相同径向高度, 棘块止动销 ( 8 ) 的另 一端***相应的棘块止动销孔 ( 2 6 ) 中并伸至棘块 ( 6 ) 的弧形端下部, 装在轴套 ( 1 ) 中并装有带挡 圈 ( 2 ) 之轴承 ( 3 ) 的主轴 ( 4 ) 的一端伸出外壳 ( 1 6 ) 前端且该端为可连接通用套筒的连接端 ( 2 9 ), 主轴 ( 4 ) 的另一端设有沿圆周均匀分布且其个 数与所述棘块槽数量相同的棘齿 ( 3 0 ), 所述棘齿 ( 3 0 ) 位于飞轮 ( 5 ) 中并与所述棘块 ( 6 ) 处在 相同轴向位置。
PCT/CN2001/000890 2001-05-14 2001-06-04 Cle d'impact electrique WO2002092289A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN01114458.0 2001-05-14
CN 01114458 CN1234504C (zh) 2001-05-14 2001-05-14 电动冲击扳手

Publications (1)

Publication Number Publication Date
WO2002092289A1 true WO2002092289A1 (fr) 2002-11-21

Family

ID=4661100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2001/000890 WO2002092289A1 (fr) 2001-05-14 2001-06-04 Cle d'impact electrique

Country Status (2)

Country Link
CN (1) CN1234504C (zh)
WO (1) WO2002092289A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072984A (zh) * 2010-12-14 2011-05-25 宁波电业局 一种验电手车
US20160184983A1 (en) * 2013-08-08 2016-06-30 Atlas Copco Industrial Technique Ab Power tool with flywheel and gear for accelerating said flywheel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6938526B2 (en) * 2003-07-30 2005-09-06 Black & Decker Inc. Impact wrench having an improved anvil to square driver transition
EP2934819B1 (en) * 2012-12-21 2017-04-26 Atlas Copco Industrial Technique AB Impulse wrench with push start feature
CN110086277A (zh) * 2019-05-23 2019-08-02 江苏铁锚工具有限公司 一种冲击扳手
CN111002261B (zh) * 2019-12-27 2021-04-23 南京涵曦月自动化科技有限公司 一种预置式双向电动扭力扳手

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947939A (en) * 1989-11-20 1990-08-14 Wonder Hung Structure of motorized screw bolt driving tool
EP0479713A2 (en) * 1990-10-02 1992-04-08 Pi-Chu Lin Electric wrench
US5435398A (en) * 1994-09-01 1995-07-25 Chiu-Yu Wang Cheng Electrical wrench
US5740892A (en) * 1996-08-26 1998-04-21 Huang; Chen Shu-Hsia Power wrench torque transmission mechanism
US5771516A (en) * 1996-08-26 1998-06-30 Huang; Chen Shu-Hsia Exchangeable power hand tool
CN2302093Y (zh) * 1997-07-04 1998-12-30 江常昱 电动起子的传动装置
US5887666A (en) * 1997-08-04 1999-03-30 Chen; Kenneth Impact wrench structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947939A (en) * 1989-11-20 1990-08-14 Wonder Hung Structure of motorized screw bolt driving tool
EP0479713A2 (en) * 1990-10-02 1992-04-08 Pi-Chu Lin Electric wrench
US5435398A (en) * 1994-09-01 1995-07-25 Chiu-Yu Wang Cheng Electrical wrench
US5740892A (en) * 1996-08-26 1998-04-21 Huang; Chen Shu-Hsia Power wrench torque transmission mechanism
US5771516A (en) * 1996-08-26 1998-06-30 Huang; Chen Shu-Hsia Exchangeable power hand tool
CN2302093Y (zh) * 1997-07-04 1998-12-30 江常昱 电动起子的传动装置
US5887666A (en) * 1997-08-04 1999-03-30 Chen; Kenneth Impact wrench structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072984A (zh) * 2010-12-14 2011-05-25 宁波电业局 一种验电手车
CN102072984B (zh) * 2010-12-14 2012-10-03 宁波电业局 一种验电手车
US20160184983A1 (en) * 2013-08-08 2016-06-30 Atlas Copco Industrial Technique Ab Power tool with flywheel and gear for accelerating said flywheel

Also Published As

Publication number Publication date
CN1385282A (zh) 2002-12-18
CN1234504C (zh) 2006-01-04

Similar Documents

Publication Publication Date Title
US11964368B2 (en) Impact tool
US5412546A (en) Power wrench
US5251706A (en) Ratchet drive tool with manual and non-manual power actuation
USRE40304E1 (en) Angle attachment for power tool
JP4989856B2 (ja) 補助ハンドル付き回転駆動の手工具
JPS6044116B2 (ja) 組合せ工具
US4721169A (en) Electric driver with torque-adjustable clutch mechanism
US20150000946A1 (en) Rotary Impact Tool
JP2001507996A (ja) インパクトツールドライバー
US7089833B2 (en) Air actuated pneumatic impact wrench lug bolt tool
JP2000506447A (ja) 動力ナットランナー
WO2002092289A1 (fr) Cle d'impact electrique
JPH0825244A (ja) ボルト継手における締結力の管理装置
TWM460752U (zh) 氣動式棘輪扳手
US6055887A (en) Power-operated wrench extension apparatus
CN206200850U (zh) 21v锂电直流无刷大扭力扳手
US2842994A (en) Rotary impact wrench
JP2004249422A (ja) 回転打撃工具
CN209665233U (zh) 带压板的直流撞击式电动扳手
US2520920A (en) Rotary impact tool
CN2483152Y (zh) 多用途自攻钻
GB2146562A (en) Tool driving device
CN110125874B (zh) 一种建筑工程用螺丝帽拆卸装置
CN110170948B (zh) 一种用于套筒扳手的振动式通用连接头
CN206493257U (zh) 一种手动高效架子工扳手

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP