CN1234504C - Electric driven impact wrench - Google Patents
Electric driven impact wrench Download PDFInfo
- Publication number
- CN1234504C CN1234504C CN 01114458 CN01114458A CN1234504C CN 1234504 C CN1234504 C CN 1234504C CN 01114458 CN01114458 CN 01114458 CN 01114458 A CN01114458 A CN 01114458A CN 1234504 C CN1234504 C CN 1234504C
- Authority
- CN
- China
- Prior art keywords
- sour jujube
- jujube piece
- flywheel
- sliding sleeve
- spring
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention has the main structure that a DC motor (14) provided with a reversing switch (23) is connected with a flywheel axle (17), a clutch (9) which is arranged in a shield (11) and can slide in an axial direction is arranged on the axle (17), a spring (10) is arranged on the axle (17), a ratchet block slot provided with a ratchet block (6) is arranged on a flywheel (5), one end of a stop pin (8) is connected with the clutch (9), and the other end is inserted into the lower part of the ratchet block (6) of the flywheel (5); one end of a main axle (4) arranged in an axle sleeve (1) and a bearing (3) is a connecting end extending out of the front end of a casing (16), and the other end of the main shaft (4) is provided with ratchets (30) which are positioned in the flywheel (5) and have the same axial direction position with the ratchet block (6). The present invention has the characteristics of large impact force moments, small volume, safe and convenient operation, low operating labor intensity, etc.
Description
Technical field
The present invention relates to electric tool, specifically be meant a kind of electric wrench.
Background technology
In the prior art, though be used for screw rod, nut screws or the electric tool spanner that unscrews can play dependent interaction, the defective that exists comprises: be AC power and drive, can't use under the situation of AC-less power; Power is less, is difficult to the fastening requirement that reaches certain, can't be fastening and can't unclamp the bolt that gets rusty for a long time for the bolt more than 12 centimetres; Labour intensity is big, and inertia and knockout press are big, are awkward.
Summary of the invention
The objective of the invention is, a kind of electric impact wrench is provided, it adopts dc supply, have little (10 watts of the no-load powers of input power, 80 watts of full-load powers) big, in light weight, the easy to operate simple and direct and safety of moment of torsion, characteristics that labour intensity is little, be suitable for flowing, field work (as changing doughnut etc.), practical.
Technical scheme of the present invention is, described electric impact wrench has the shell of band handle, there is power supply wiring the handle bottom, described outer casing back is equipped with dc motor, this motor is connected with described power supply wiring through the power supply reversing switch, the motor reel that bearing is housed links with the flywheel shaft of flywheel one side, main shaft one end of bearing that is contained in the axle sleeve and the band back-up ring is housed stretches out the shell front end and this is held to connecting the link of use-em-up fitted socket, the other end of described main shaft is provided with along circumference and evenly distributes and its number and the identical ratchet of described sour jujube piece groove quantity, and described ratchet is arranged in flywheel and is in identical axial location with described sour jujube piece.Its design feature is, an automatic clutch that places guard shield and can be in axial sliding is housed on the described flywheel shaft, this automatic clutch sliding sleeve is arranged and more than 2 or 2 identical shaped with the size secter pat, the garter spring hoop of each secter pat through placing its bottom spring groove is trapped among on the sliding sleeve circumference, on flywheel shaft and be arranged in the sliding sleeve axis hole compression spring is housed, have on the flywheel along equally distributed 1～6 the sour jujube piece groove of circumference, in each sour jujube piece groove through swivel pin and be positioned at the hinge hole at sour jujube piece middle part hinged respectively the sour jujube piece, each sour jujube piece groove two ends and be positioned on the flywheel body of flywheel shaft one side and be respectively equipped with sour jujube piece lock pin aperture, one end of corresponding sour jujube piece latch is connected with sliding sleeve one end of automatic clutch and is in the same radial height with the spring coil of described compression spring, and the other end of described sour jujube piece latch inserts corresponding sour jujube piece lock pin aperture and extends the arc tips bottom of sour jujube piece.
Make below in conjunction with accompanying drawing and to further specify.
By Fig. 1 and Fig. 2 as can be known, the present invention has the shell (16) of band handle (21), and there is power supply wiring (22) handle (21) bottom; Dc motor (14) is equipped with in described shell (6) rear end, this motor (14) through power supply reversing switch (23) with described power supply wiring (22) be connected (circuit connection diagram is referring to Figure 15); The function of described power supply reversing switch (23) (prior art product) comprises to be connected and cuts off the electricity supply and the converting power source both positive and negative polarity is realized the motor forward and reverse with being connected of motor; The flywheel shaft (17) that same flywheel (5) one sides of motor reel (15) of bearing (13) are housed links, an end of main shaft (4) that is contained in the axle sleeve (1) and the bearing (3) of band back-up ring (2) is housed stretches out shell (16) front end and this and holds and be the link that can connect use-em-up fitted socket (29) shown in Figure 11 (for example this is held and is common square toes), the other end of described main shaft (4) be provided with as Figure 11 with shown in Figure 12 along circumference evenly distribute and its number with as described in the identical ratchet (30) of sour jujube piece groove quantity, described ratchet (30) is arranged in flywheel (5) and is in same axial position shown in Figure 1 (being that sour jujube piece (6) can impact described ratchet) with described sour jujube piece (6).Its design feature is that an automatic clutch (9) that places guard shield (11) and can be in axial sliding is housed on the flywheel shaft (17); Referring to Fig. 3, this automatic clutch (9) has sliding sleeve (18) and (as 20 at the most) identical shaped with big or small secter pat (20) (secter pat is three among Fig. 3) more than 2 or 2; A kind of example structure of single secter pat (20) as shown in Figure 4 and Figure 5; The garter spring (19) of each secter pat (20) through placing its bottom spring groove (24) (referring to Fig. 5) kind is (referring to Fig. 1, Fig. 3) hoop is trapped among on sliding sleeve (18) circumference, go up and be arranged in sliding sleeve (18) axis hole at flywheel shaft (17) compression spring (10) is housed, have on the flywheel (5) along equally distributed 1～6 the sour jujube piece groove of circumference (being 2 sour jujube piece grooves among Fig. 2 and Fig. 8), in each sour jujube piece groove through the swivel pin shown in Fig. 2 (7) and be positioned at the hinge hole (25) (referring to Fig. 6) at sour jujube piece middle part hinged respectively the sour jujube piece, each sour jujube piece groove two ends and be positioned on the flywheel body of flywheel shaft (17) one sides and be respectively equipped with sour jujube piece lock pin aperture (26) (referring to Fig. 8), sliding sleeve (18) one ends of the same automatic clutch of an end (9) of corresponding sour jujube piece latch (8) link to each other and the spring coil body of described compression spring (10) is in same radial height shown in Figure 1 (being the top spring coil that described pin (8) moves axially Shi Keding and spring (10)); And the syndeton that same sliding sleeve (18) one ends of an end of sour jujube piece latch described herein (8) are connected can be, the neck (referring to Fig. 2) that will sell (8) right-hand member snaps in the cotter way (29) of sliding sleeve (18) one ends among Fig. 3 and gets final product; The other end of sour jujube piece latch (8) inserts in the corresponding sour jujube piece lock pin aperture (26) and extends the arc tips bottom of sour jujube piece (6), and as shown in Figure 1, the available jump ring of described guard shield (11) (12) is positioned on the flywheel shaft (17).
Design principle of the present invention is (referring to Fig. 1 and Fig. 2), and switch (23) can be connected dc source and being connected of conversion dc motor (14) and power supply positive and negative electrode as required, thus the realization forward or reverse; Motor (14) prestart, the other end of the sour jujube piece latch (8) that one end links to each other with the sliding sleeve (18) of automatic clutch (9) inserts under the thrust of spring (10) in the pin-and-hole (26) of flywheel (5), make sour jujube piece (6) can not rotate (is the swings of both sides, axle center with pin (7)) around swivel pin (7), main shaft (4) does not rotate flywheel this moment (5) with motor reel (15) rotation; When flywheel (5) with motor (14) when synchronization is increased to certain rotating speed, a plurality of secter pats (20) of the automatic clutch (9) that together rotates with flywheel (5) just overcome the tightening force of garter spring (19) and open automatically under centrifugal action, in case this open to produce just make moving axially among the whole Fig. 1 of generation of described clutch (9) to the right, then sour jujube piece latch (8) can overcome the active force of spring (10) and moving axially to withdraw from from the pin-and-hole (26) of flywheel (5) to the right taken place, make sour jujube piece (6) lose its constraint and in the rotary course of flywheel (5), impact the ratchet (30) of described main shaft (4), make main shaft (4) produce the impact rotation, its direction of rotation is consistent with the rotation direction of motor reel, thereby realizes the function of electric impact wrench.When motor (14) rotating speed descended or stops operating, latch (8) can insert described pin-and-hole (26) under spring (10) thrust and in rotary course, promptly reset.Described axle sleeve (1), bearing (13), motor (14) are fixedly mounted in the shell (16).
Said structure and operation principle make main shaft of the present invention produce very strong rotary impact moment, but turn is than large diameter bolt and for a long time the bolt of getting rusty.
As known from the above, the present invention is a kind of electric impact wrench, it adopts dc supply, thereby can utilize vehicle-mounted dc source or small battery (more than the 12V7AH) etc. need not to carry out field, mobile operational process under the AC power condition, characteristics such as work high above the ground has that volume is little, in light weight, power is big, easy-to-operate and labour intensity are little, be particularly suited for the auto repair of accompanying, operations such as re-type, high-altitude pylon then become monkey wrench as long as change the front end sleeve.
Description of drawings:
Fig. 1 is a whole sectional structure chart of the present invention;
Fig. 2 is the three-dimensional structure diagram of the separated attitude of each member in the shell;
Fig. 3 is that the automatic clutch member is the stereochemical structure of released state;
Fig. 4 is the positive TV structure of described secter pat;
Fig. 5 is an A-A sectional structure among Fig. 4;
Fig. 6 is embodiment master's TV structure of sour jujube piece;
Fig. 7 be among Fig. 6 B-B to sectional structure;
Fig. 8 is the structure chart of facing of flywheel;
Fig. 9 be among Fig. 8 C-C to sectional structure chart;
Figure 10 be among Fig. 9 D-D to sectional structure chart;
Figure 11 is the structure chart of facing of main shaft;
Figure 12 is that the E of member shown in Figure 11 is to view;
Figure 13 is circuit catenation principle figure.
In described accompanying drawing:
The 1-axle sleeve, 6-sour jujube piece,
The 2-back-up ring, the 7-swivel pin
The 3-bearing, 8-sour jujube piece latch,
The 4-main shaft, the 9-automatic clutch,
The 5-flywheel, the 10-compression spring,
The 11-guard shield, the 25-hinge hole,
The 12-jump ring, 26-sour jujube piece lock pin aperture,
The 13-bearing, the 27-hinge hole,
The 14-dc motor, 28-jump ring groove,
The 15-motor reel, the 29-link,
The 16-shell, the 30-ratchet,
17-flywheel shaft 18-sliding sleeve,
The 19-garter spring, the 20-secter pat,
The 21-handle, the 22-power supply wiring,
23-power supply reversing switch, 24-spring groove,
The specific embodiment
According to the product of the present invention of accompanying drawing and said structure, adopt 12-volt dc power supply (direct current 24 volts, 48 volts all can); Shell (16) for nylon add 30% fiberizing to opening structure, connect into integral body with the M4 tapping screw, sour jujube piece (6) and ratchet (30) are 2, Fig. 1 is the actual device structure.Described bearing (13) and motor (14) and axle sleeve (1) are fixed in the shell (16).
Claims (1)
1, a kind of electric impact wrench, the shell (16) that band handle (21) are arranged, there is power supply wiring (22) handle (21) bottom, dc motor (14) is equipped with in described shell (6) rear end, it is connected with described power supply wiring (2) through power supply reversing switch (23), the flywheel shaft (17) that same flywheel (5) one sides of motor reel (15) of bearing (13) are housed links, an end of main shaft (4) that is contained in the axle sleeve (1) and the bearing (3) of band back-up ring (2) is housed stretches out shell (16) front end and this and holds link (29) for connecting use-em-up fitted socket, the other end of main shaft (4) is provided with along circumference and evenly distributes and its number and the identical ratchet (30) of described sour jujube piece groove quantity, described ratchet (30) is arranged in flywheel (5) and is in same axial position with described sour jujube piece (6), it is characterized in that, an automatic clutch (9) that places guard shield (11) and can be in axial sliding is housed on the flywheel shaft (17); This automatic clutch (9) sliding sleeve (18) is arranged and more than 2 or 2 identical shaped with the size secter pat (20); Garter spring (19) hoop of each secter pat (20) through placing its bottom spring groove (24) is trapped among on sliding sleeve (18) circumference, go up and be arranged in sliding sleeve (18) axis hole at flywheel shaft (17) compression spring (10) is housed, have on the flywheel (5) along equally distributed 1～6 the sour jujube piece groove of circumference, in each sour jujube piece groove through swivel pin (7) and be positioned at the hinge hole (25) at sour jujube piece middle part hinged respectively sour jujube piece (6), each sour jujube piece groove two ends and be positioned on the flywheel body of flywheel shaft (17) one sides and be respectively equipped with sour jujube piece lock pin aperture (26), sliding sleeve (18) one ends of the same automatic clutch of one end (9) of corresponding sour jujube piece latch (8) link to each other and are in the same radial height with the spring coil body of described compression spring (10), and the other end of sour jujube piece latch (8) inserts in the corresponding sour jujube piece lock pin aperture (26) and extends the arc tips bottom of sour jujube piece (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114458 CN1234504C (en) | 2001-05-14 | 2001-05-14 | Electric driven impact wrench |
| PCT/CN2001/000890 WO2002092289A1 (en) | 2001-05-14 | 2001-06-04 | Electric impact wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114458 CN1234504C (en) | 2001-05-14 | 2001-05-14 | Electric driven impact wrench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1385282A CN1385282A (en) | 2002-12-18 |
| CN1234504C true CN1234504C (en) | 2006-01-04 |
Family
ID=4661100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01114458 Expired - Fee Related CN1234504C (en) | 2001-05-14 | 2001-05-14 | Electric driven impact wrench |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1234504C (en) |
| WO (1) | WO2002092289A1 (en) |
Families Citing this family (6)
| 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 |
| CN102072984B (en) * | 2010-12-14 | 2012-10-03 | 宁波电业局 | Electricity testing handcart |
| EP2934819B1 (en) * | 2012-12-21 | 2017-04-26 | Atlas Copco Industrial Technique AB | Impulse wrench with push start feature |
| US20160184983A1 (en) * | 2013-08-08 | 2016-06-30 | Atlas Copco Industrial Technique Ab | Power tool with flywheel and gear for accelerating said flywheel |
| CN110086277A (en) * | 2019-05-23 | 2019-08-02 | 江苏铁锚工具有限公司 | A kind of impact wrench |
| CN111002261B (en) * | 2019-12-27 | 2021-04-23 | 南京涵曦月自动化科技有限公司 | Preset bidirectional electric torque wrench |
Family Cites Families (7)
| 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 |
| JPH0460666U (en) * | 1990-10-02 | 1992-05-25 | ||
| US5435398A (en) * | 1994-09-01 | 1995-07-25 | Chiu-Yu Wang Cheng | Electrical wrench |
| US5771516A (en) * | 1996-08-26 | 1998-06-30 | Huang; Chen Shu-Hsia | Exchangeable power hand tool |
| US5740892A (en) * | 1996-08-26 | 1998-04-21 | Huang; Chen Shu-Hsia | Power wrench torque transmission mechanism |
| CN2302093Y (en) * | 1997-07-04 | 1998-12-30 | 江常昱 | Driving device for electric screwdriver |
| US5887666A (en) * | 1997-08-04 | 1999-03-30 | Chen; Kenneth | Impact wrench structure |
-
2001
- 2001-05-14 CN CN 01114458 patent/CN1234504C/en not_active Expired - Fee Related
- 2001-06-04 WO PCT/CN2001/000890 patent/WO2002092289A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN1385282A (en) | 2002-12-18 |
| WO2002092289A1 (en) | 2002-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |