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)
Chinese (zh)
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/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable 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)

Abstract

L'invention se rapporte à un outil électrique, plus particulièrement à une clé électrique qui comporte un boîtier (16), un moteur cc (14) commandé par une unité de commutation (23) et présentant une tige couplant l'arbre du moteur (17) par l'intermédiaire d'un embrayage (9) se trouvant dans un boîtier de protection (11) et pouvant coulisser sur l'arbre (17) dans le sens axial. Sur l'arbre (17) se trouvent un ressort (10) et un volant (5) présentant une fente pour cliquet dans laquelle un bloc est monté. L'invention comporte également une goupille de butée (8) ayant une extrémité reliant l'accouplement (9) et une autre extrémité insérée dans la partie inférieure du bloc (6) du volant (5), un arbre fileté (4) monté dans un manchon et un roulement dont une extrémité servant d'extrémité de raccord s'étend au-delà de l'extrémité avant du boîtier (16), tandis que l'autre extrémité dotée d'une dent de cliquet (30) est montée dans le volant (5) et possède la même position axiale que le bloc de cliquet (6). Par rapport à une clé électrique conventionnelle, la présente invention a un plus grand moment d'impact, un plus petit volume, est pratique à utiliser et réduit l'intensité du travail.
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
CN 01114458 CN1234504C (zh) 2001-05-14 2001-05-14 电动冲击扳手
CN01114458.0 2001-05-14

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 (fr)
WO (1) WO2002092289A1 (fr)

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 (fr) * 2012-12-21 2017-04-26 Atlas Copco Industrial Technique AB Clé à impulsion ayant une caractéristique de démarrage de poussée
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 (fr) * 1990-10-02 1992-04-08 Pi-Chu Lin Clef à écrous électrique
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 (fr) * 1990-10-02 1992-04-08 Pi-Chu Lin Clef à écrous électrique
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
CN1234504C (zh) 2006-01-04
CN1385282A (zh) 2002-12-18

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
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
CN104972438B (zh) 动力工具
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