CN103909490B - Electric wrench - Google Patents
Electric wrench Download PDFInfo
- Publication number
- CN103909490B CN103909490B CN201310063713.8A CN201310063713A CN103909490B CN 103909490 B CN103909490 B CN 103909490B CN 201310063713 A CN201310063713 A CN 201310063713A CN 103909490 B CN103909490 B CN 103909490B
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- CN
- China
- Prior art keywords
- ratchet
- gear
- opening
- annex
- housing
- 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
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- 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
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- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear
Abstract
A kind of electric wrench, comprise housing, power part, changement, support transmission component, opening gear, annex and Flexible Connector, housing comprises two chelas be oppositely arranged, jaw is formed between two chelas, power part, changement, support transmission component and opening gear connect successively and hold in the housing, its split shed gear to be arranged in installation portion and can to rotate in installation portion, opening gear comprises the outer toothed portion be meshed with support transmission component, the opening corresponding with jaw and the resettlement section communicated with opening, annex can be arranged in resettlement section to spline, resettlement section is provided with holding tank, the lateral wall of annex is provided with the accepting groove corresponding with holding tank, opening gear is provided with the limiting section communicated with holding tank, on one end of Flexible Connector, correspondence is provided with positive stop end, positive stop end is arranged in described limiting section to prevent Flexible Connector from deviating from holding tank, the present invention is simple to operation, and working strength is little, and operating efficiency is high.
Description
Technical field
The present invention relates to a kind of electric tool, particularly a kind of electric wrench.
Background technology
Spanner has a wide range of applications in daily life, and it is normally used for tightening or unscrew screw, nut.Conventional spanner has open-end wrench and ratchet spanner two kinds.The lateral opening of screw element from spanner can be put into by general open-end wrench, but it is being tightened or in unscrewing operation, just need spanner to take off from screw element after screw element being rotated a less corner, and then spanner changed an angle and be placed on screw element to be rotated further, this process will be repeated quickly and easily as many times as required usually, until screw element is fully tightened or unclamps, therefore operate inconvenience, and open-end wrench is generally not suitable for using in some narrow spaces.The nip part of ratchet spanner is generally enclosed construction, therefore will realize tightening or unscrew screw element and ratchet spanner need be entangled screw element from the top of screw element or bottom, use inconvenience.For the convenience of increasing work efficiency and use, some electric wrenches have appearred in market, but the working head of these electric wrenches is generally enclosed construction, therefore usually only can uses when bolt is shorter.In auto repair or Decoration Industry, have the situation that a lot of bolt is long, existing electric wrench must coordinate long sleeve to use, and which decreases the convenience of use.In addition, common electric wrench twist with tubular workpiece (such as water pipe, oil pipe) coordinate nut time more inconvenient, common electric wrench even cannot be used to carry out operation.
Summary of the invention
The object of the invention is that providing a kind of can use and easy to operate electric wrench at narrow space.
For achieving the above object, the invention provides a kind of electric wrench, rotate for driving screw element, it comprises wrench body and the annex for coordinating with screw element, described wrench body comprises housing, power part and changement, described wrench body also comprises support transmission component and opening gear, the installation portion that described housing comprises grip part and extended along its length by one end, grip part, described installation portion comprises two chelas be oppositely arranged, jaw is formed between two chelas, described power part, changement, support transmission component and opening gear connect successively and are contained in described housing, its split shed gear to be arranged in described installation portion and can to rotate in installation portion, described opening gear comprises the outer toothed portion be meshed with support transmission component, the opening corresponding with described jaw and the resettlement section communicated with opening, the width of described jaw and described opening is more than or equal to diameter or the width of tubulose or the columnar objects coordinated with described screw element, described annex can be arranged on to spline in the resettlement section of described opening gear, the resettlement section of described opening gear circumferentially be provided with holding tank, the lateral wall of described annex is circumferentially provided with the accepting groove corresponding with holding tank, described electric wrench also comprises Flexible Connector, annex to be connected in opening gear and to prevent annex from sliding axially in the receiving space that the accepting groove of holding tank and annex that described Flexible Connector can be contained in opening gear is formed, in opening gear, on composition surface, contiguous holding tank one end place also offers the limiting section communicated with holding tank, on one end of Flexible Connector, correspondence is provided with positive stop end, the positive stop end of Flexible Connector is arranged in described limiting section to prevent Flexible Connector from deviating from holding tank.
Preferably, described resettlement section comprises the interior composition surface be arranged on opening gear inwall, described annex comprises the outer engagement surface be arranged on its lateral wall, described interior composition surface and described outer engagement surface are all roughly cylindrical shape, described interior composition surface is formed with multiple radially-inwardly outstanding rib, described rib 1831 extends along opening Gear axis direction and to be evenly arranged in opening gear on composition surface; Described outer engagement is formed with the multiple recesses corresponding with rib on the surface, and described recess is along on composition surface in the extension of annex axis direction also even arrangement annex.
Preferably, described annex is open sleeve, and described holding tank is C shape groove, and described Flexible Connector is roughly C shape, and described accepting groove is multiplely be positioned at same deep-slotted chip breaker circumferentially.
Preferably, described housing is " one " font structure, it comprises the main casing that longitudinally extends and the support housing extended by main casing one end, one end of support housing is fixedly mounted in main casing, the other end extends to main casing outside along shell length direction, installation portion is formed in described support housing one end away from main casing, installation portion comprises two chelas be oppositely arranged, two chelas are roughly curved, be formed with an accommodation hole and a jaw communicated with accommodation hole between two chelas, accommodation hole is used for construction opening gear.
Preferably, described changement is ratchet mechanism or bevel gear mechanism.
Preferably, be also provided with reducing gear between described power part and changement, the power that described power part provides passes to changement after being slowed down by reducing gear.
Preferably, described changement is ratchet mechanism, and it comprises eccentric shaft, swing component, ratchet and ratchet, and described eccentric shaft is articulated on described support housing, and eccentric shaft is connected with the output shaft of power part by reducing gear; Described ratchet is articulated on described swing component, the inner ring of described ratchet is provided with the hook tooth with click-fit, the outer ring of described ratchet is also provided with and the external toothing supporting transmission component and match, ratchet can rotate along first direction or second direction around the pivot perpendicular to described swing component place plane under the drive of swing component, when described ratchet rotates along first direction, ratchet just inserts hook tooth to promote ratchet rotating in same direction; When described ratchet rotates along second direction, ratchet streaks on ratchet, and ratchet stops operating.
Preferably, described power part comprises motor and to the power supply of feeding electric motors, described reducing gear is planetary gear reducing mechanism, it comprises planetary gear, ring gear, planet carrier and central gear, central gear is connected with the output shaft spline of motor, and planetary gear is meshed with central gear and ring gear respectively, and wherein ring gear is fixedly mounted on and supports on housing, planetary gear rotation under the drive of central gear, and revolve round the sun along the output shaft of ring gear around motor; The corresponding planet pin being fixedly installed protrusion on planet carrier, planetary gear to be sleeved on planet pin and can to rotate relative to planet pin, the connection of described planet carrier and eccentric shaft spline.
Preferably, described changement comprises commutator, described commutator includes rotating shaft, elastic parts and dial turn round, described swing component is articulated on described support housing by rotating shaft, described elastic parts one end supports in rotating shaft, the other end and described ratchet offset, described ratchet comprises along the symmetrically arranged first ratchet portion of pivot and the second ratchet portion, described elastic parts rotates under rotating shaft drives, and offset with the first ratchet portion or the second ratchet portion, turning round spline for described group is connected in described rotating shaft, with make described dial to turn round axis of rotation can be driven on ratchet, to support position to change elastic parts, thus realize commutation function, described elastic parts comprises stage clip and hollow pins, and described rotating shaft is provided with putting hole, and wherein stage clip one end is connected to the inwall of hollow pins, and the other end is contained in the putting hole of rotating shaft, and described hollow pins offsets with ratchet under the effect of stage clip.
Preferably, described swing component comprises swing body and the over cap with swing body fits, described ratchet is arranged on and swings between body and over cap, swing on body and over cap and be provided with shaft hole, described ratchet is arranged with shaft hole is concentric, described swing body and over cap are all relatively set with pilot hole, be contained in pilot hole by screw and described swing body and over cap are fixedly connected with, described rotating shaft passes the shaft hole of described swing body and over cap to enable swing body and over cap axis of rotation relatively, described rotating shaft two ends to be supported on support housing and can relative support housing into rotation.
Preferably; swing at least one parts in body and over cap and be equipped with round boss on the side near another parts; wherein shaft hole is arranged on the center of round boss; described pilot hole is arranged on round boss; round boss is also provided with the pivot hole installing ratchet for pivotable, pivot hole and pilot hole lay respectively at the circumferential both sides of round boss.
Preferably, described support transmission component comprises two drives, and each drive both sides engage each other with opening gear and changement respectively, and the opening size of opening gear is less than the maximum engagement distance between two drives and opening gear.
Preferably, described electric wrench also comprises Control Component, described Control Component comprises main switch, reset switch, switch actuator and circuit board, wherein main switch, reset switch are oppositely arranged on the both sides, grip part of housing, described switch actuator is arranged between main switch and reset switch, circuit board is provided with the control circuit for controlling electric machine rotation.
The present invention by offering the opening corresponding with jaw on opening gear, thus can screw element be set in opening gear by installation portion, carry out tightening or unclamping action, thus make electric wrench of the present invention when some bolts are long, or can be convenient to use in situation when the nut of stubborn band pipeline etc.And using changement as reversing transmission mechanism, and provide power by motor, in use, only screw element need be put in opening gear and then start electric wrench of the present invention, tightening or unscrewing of screw element can be realized when not needing roll-shell, simple to operation, and working strength is little, operating efficiency is high, also can be easy to use in narrow operating space, and opening gear coordinates tightening or unscrewing of the screw element meeting different size by Flexible Connector and annex spline, the positive stop end of Flexible Connector is arranged in described limiting section to prevent Flexible Connector from deviating from holding tank, thus prevent Flexible Connector and opening from interfering.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the electric wrench of embodiment of the present invention;
Fig. 2 is annex and the opening gear schematic diagram of embodiment of the present invention;
Fig. 3 is the structural representation after the electric wrench of embodiment of the present invention removes shell body and upper support frame;
Fig. 4 is the structural representation after Fig. 3 removes the over cap of swing component;
Fig. 5 is the three-dimensional exploded view of the electric wrench housing of embodiment of the present invention;
Fig. 6 is the electric wrench motor of embodiment of the present invention and the three-dimensional exploded view of reducing gear;
Fig. 7 is the three-dimensional exploded view of the electric wrench changement of embodiment of the present invention;
Fig. 8 is the front view after the electric wrench of embodiment of the present invention removes housing;
Fig. 9 is the electric wrench opening gear operation schematic diagram of embodiment of the present invention;
Figure 10 is the schematic diagram of electric wrench opening gear operation to other direction of embodiment of the present invention;
Figure 11 is the using state schematic diagram of the electric wrench of embodiment of the present invention.
Detailed description of the invention
In order to more understand technology contents of the present invention, institute's accompanying drawings is coordinated to be described as follows especially exemplified by detailed description of the invention.
Please refer to Fig. 1, a kind of electric wrench 100, comprise wrench body 10 and annex 20.
Please refer to Fig. 2 and Fig. 4 wherein wrench body 10 comprise housing 11, power part 13, reducing gear 14, changement 15, support transmission component 17, opening gear 18 and Control Component 19.
Housing 11 is " one " font structure, and it comprises the main casing 110 that longitudinally extends and the support housing 111 extended by main casing 110 one end.Power part 13, reducing gear 14, changement 15, support transmission component 17 and opening gear 18 connect successively and are contained in housing 11.
Please also refer to Fig. 5, in the present embodiment, main casing 110 comprises the first shell body 1101 and second housing body 1102, mutual clamping between first shell body 1101 and second housing body 1102, and with screw fastening, container cavity (scheming not mark) is formed, to hold one end of power part 13, reducing gear 14 and support housing 111 between first shell body 1101 and second housing body 1102.First shell body 1101 also can adopt the modes such as interference is connected, snapping, grafting, pin connection with between second housing body 1102, as long as can by fastening to the first shell body 1101 and second housing body 1102 and the connected mode of easy accessibility all should belong to protection scope of the present invention.
One end of support housing 111 is formed with installation portion 1111, installation portion 1111 comprises two chelas be oppositely arranged 1112, two chelas 1112 are roughly curved, be formed with an accommodation hole (figure does not mark) and a jaw communicated with accommodation hole 1113 between two chelas 1112, accommodation hole is used for construction opening gear 18.One end of support housing 111 is fixedly mounted in main casing 110, it is outside that the other end extends to main casing 110 along housing 11 length direction, the intensity of electric wrench 10 of the present invention during in order to ensure manual operation, the first end of support housing 111 extends to the grip part 112 of housing 11.In the present embodiment, support housing 111 comprises the first bracing frame 1114 and the second bracing frame 1115, the aluminum component that first bracing frame 1114 is formed in one or hot investment casting part, second bracing frame 1115 is the lid corresponding with the first bracing frame 1114 structure, first bracing frame 1114 and the clamping mutually of the second bracing frame 1115, make like this electric wrench 10 compact conformation of the present invention and also torsional strength high, thus can be used for transmitting larger moment of torsion.
In operation, electric wrench 10 can be overlapped from the side by jaw 1113 and install on screw element, then carry out tightening or unclamping action, thus make electric wrench 10 of the present invention when some bolts are long, or when the nut of stubborn band pipeline, or can be convenient to use in the situation such as operating space is narrower.
Power part 13 provides power for giving changement 15, it power supply 131 comprising motor 130 and provide power source to motor 130.In embodiments, power supply 131 is battery, such as, and lithium battery or Ni-MH battery.Be appreciated that and also can not arrange power supply in housing 11, and directly powered by external power supply, such as, by ac power supply, now, power part is alternating current generator.
Please refer to Fig. 6, reducing gear 14 is for the power transmission that provided by power part 13 to changement 15, and its clutch end is connected with changement 15.Reducing gear 14 is arranged on the rotating speed for reducing motor 130 between power part 13 and changement 15, improves moment of torsion.
In order to make the structure of electric wrench 10 compacter, larger moment of torsion can be transmitted, and there is higher transmission efficiency, in the present embodiment, reducing gear 14 is planetary gear reducing mechanism, and it comprises planetary gear 140, ring gear 141, planet carrier 142 and central gear 143.
Ring gear 141 is fixedly mounted in housing 11, and in order to keep the steady of transmission, planetary gear 140 is more than one, and to be evenly distributed in ring gear 141 and to be meshed with ring gear 141.In the present embodiment, planetary gear 140 is three, and central gear 143 is connected with the output shaft spline of motor 130, and planetary gear 140 is meshed with central gear 143, planetary gear 140 rotation under the drive of central gear 143, and revolve round the sun along the output shaft of ring gear 141 around motor 130.Correspondingly on planet carrier 142 be fixedly installed three planet pins 1420 protruded, planetary gear 140 to be sleeved on planet pin 1420 and can to rotate relative to planet pin 1420.Planet carrier 142 under the drive of planetary gear 140 around the output shaft rotation of motor 130, and be connected with changement 15 with by power transmission to changement 15.Be appreciated that present embodiment is preferred version of the present invention, reducing gear 14 is not limited to planetary gear reducing mechanism, also can be other reducing gears, such as bevel gear reducing mechanism.
Please refer to Fig. 3 and Fig. 7, in the present embodiment, changement 15 is ratchet mechanism, comprises eccentric shaft 150, swing component 151, ratchet 152 and ratchet 153.One end of eccentric shaft 150 is connected with planet carrier 142 spline, the other end of eccentric shaft 150 is provided with eccentric part (figure does not mark), eccentric part connect with swing component 151 with by motor output shaft around the convert rotational motion of axis for swing component 151 is around the reciprocally swinging of its pivotal axis.Swing component 151 is articulated on support housing 111, and swing component 151 is provided with the recess 1510 corresponding to the eccentric part of eccentric shaft 150, eccentric part is set with the actuating sleeve 1501 coordinated with groove 1510.Actuating sleeve 1501 is around the rotation of the center axis of eccentric shaft 150, and in the process of its eccentric rotary, actuating sleeve 1501 drives swing component 151 around the reciprocally swinging in pivotal axis cycle.
Be appreciated that changement 15 also can for bevel gear mechanism, bevel gear mechanism two ends respectively with reducing gear 14 and support transmission component 17 be connected with by power transmission to supporting on transmission component 17.
Be appreciated that, changement 15 itself slows down preferably and the effect increasing moment of torsion owing to can play, therefore also reducing gear 14 can be omitted, directly be connected with the eccentric shaft 150 of changement 15 by the output shaft of motor 130 or the output shaft of motor 130 be designed to the form of eccentric shaft and swing component 151 cooperatively interacts, realizing the function that changement 15 transmits power.
Ratchet 152 is articulated on swing component 151, ratchet 153 is provided with the hook tooth 1530 coordinated with ratchet 152, ratchet 152 can rotate along first direction or second direction around the pivot axis perpendicular to described swing component 151 place plane under the drive of swing component 151, when described ratchet 152 rotates along first direction, ratchet 152 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction; When described ratchet 152 rotates along second direction, ratchet 152 streaks on ratchet 153, and ratchet 153 stops operating.
Please refer to Fig. 4, in order to make the structure of electric wrench 10 of the present invention compacter, changement 15 is internal gearing structure, and hook tooth 1530 is arranged on ratchet 153 inner ring, and the outer ring of ratchet 153 is also provided with and the external toothing 1531 supporting transmission component 17 and match.
Fig. 7 please be refer again to, conveniently change the rotation direction of ratchet 153, changement 15 also comprises commutator 154, commutator 154 includes rotating shaft 1540, elastic parts 1541 and dial turn round 1542, swing component 151 is articulated on support housing 111 by rotating shaft 1540, elastic parts 1541 one end is fixedly connected in rotating shaft 1540, the other end and ratchet 152 offset, ratchet 152 comprises symmetrically arranged first ratchet portion 1520 and the second ratchet portion 1521, elastic parts 1541 can offset with the first ratchet portion 1520 or the second ratchet portion 1521 under rotating shaft 1540 drives, when elastic parts 1541 and the first ratchet portion 1520 offset, when ratchet 152 rotates along first direction, first ratchet portion 1520 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction, when ratchet 152 rotates along second direction, first ratchet portion 1520 streaks on ratchet 153, and ratchet 153 stops operating, when elastic parts 1541 and the second ratchet portion 1521 offset, when ratchet 152 rotates along second direction, second ratchet portion 1521 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction, when ratchet 152 rotates along first direction, second ratchet portion 1521 streaks on ratchet 153, and ratchet 153 stops operating.Dial and turn round 1542 splines and be connected in rotating shaft 1540, turning round by dialling the rotation that 1542 can drive rotating shaft 1540, elastic parts 1541 being supported in the first ratchet portion 1520 or the second ratchet portion 1521, thus realizing commutation function.
Wherein, elastic parts 1541 comprises stage clip 1543 and hollow pins 1544, rotating shaft 1540 is provided with putting hole 1545, wherein stage clip 1543 one end is connected to the inwall of hollow pins 1544, the other end is contained in the putting hole 1545 of rotating shaft 1540, and hollow pins 1544 offsets with ratchet 152 under the effect of stage clip 1543.
For ease of installing and protection ratchet 153 and be positioned at the ratchet 152 of ratchet 153; swing component 151 comprises swing body 1511 and an over cap 1512 that can coordinate with swing body 1511; ratchet 153 is arranged on and swings between body 1511 and over cap 1512; swing on body 1511 and over cap 1512 and be provided with shaft hole (figure does not mark), ratchet 153 is arranged with shaft hole is concentric.Swing on body 1511 and over cap 1512 and be all relatively set with pilot hole (figure does not mark); be contained in pilot hole by screw and described swing body 1511 and over cap 1512 are fixedly connected with; rotating shaft 1540 can be rotated by phase countershaft 1540 to make swing body 1511 and over cap 1512 through the shaft hole of described swing body 1511 and over cap 1512, and rotating shaft 1540 two ends to be supported on support housing 111 and can to rotate by relative support housing 111.
In order to increase the intensity and convenient location that swing body 1511, the side swung near over cap 1512 on body 1511 is provided with round boss 1513, and ratchet 153 is arranged with round boss 1513 is concentric.Shaft hole is arranged on the center of the round boss 1513 swinging body 1511.In order to prevent ratchet 152 and rigging screw from mutually interfering, pivot hole 1514 and pilot hole lay respectively at the circumferential both sides of round boss 1513.Be appreciated that; also can round boss 1513 be arranged on over cap 1512; or over cap 1512 is provided with round boss 1513 with all corresponding on swing body 1511, and ratchet 153 is rotating to be sleeved on round boss 1513, to make the structure of electric wrench 10 of the present invention compacter.
Please refer again to Fig. 3 and Fig. 4, support transmission component 17 for by the power transmission of changement 15 to opening gear 18, support transmission component 17 and engage each other with opening gear 18.
In the present invention, support transmission component 17 and comprise two drives 170 engaged with the external toothing 1531 of opening gear 18 and ratchet 153 respectively.More steady in order to make to transmit, structure is compacter, and two drives 170 are symmetrical centered by the axis of motor output shaft.Being appreciated that to make power transmission more stable, also can increasing some drives between above-mentioned two symmetrically arranged drives 170.The width of jaw 1113 and opening 182 is more than or equal to diameter or the width of tubulose or the columnar objects coordinated with described screw element; certainly; supporting transmission component 17 also can be chain or the tubular structure with external gear; as long as can by the power transmission of ratchet 153 on opening gear 18; and ensure that opening gear 18 supports transmission component 17 and has part to be meshed with opening gear 18 all the time in rotation process, thus the transmission component driving opening gear 18 to rotate stably all should belong to protection scope of the present invention.
Please also refer to Fig. 1, Fig. 2 and Fig. 8, opening gear 18 is meshed with support transmission component 17, and is rotatably arranged in the installation portion 1111 of support housing 111.
Opening gear 18 to be arranged in installation portion 1111 and can to rotate in installation portion 1111, annex 20 can be open sleeve or the converter of different size, be connected on opening gear 18 to annex 20 spline, opening gear 18 drives annex 20 to rotate to tighten or unscrew the screw element be placed in annex 20 by the power supporting transmission component 17 transmission.
The outer toothed portion 181 that opening gear 18 comprises with wrench body 10 is meshed, the opening 182 corresponding with jaw 1113 and the resettlement section 183 communicated with opening 182.In order to ensure the stability of power transmission, the A/F of opening gear 18 is less than the maximum engagement distance between two drives 170 and opening gear 18.Opening gear 18 is connected with annex 20 spline, and resettlement section 183 includes the interior composition surface 1830 be arranged on opening gear inwall and the multiple radially-inwardly outstanding ribs 1831 be arranged on interior composition surface.In the present embodiment, the interior composition surface 1830 of opening gear 18 is roughly cylindrical shape, and in order to make power transmission more stable, rib 1831 extends along opening gear 18 axis direction and to be evenly arranged in opening gear 18 on composition surface 1830.
Annex 20 is arranged in the resettlement section 183 of opening gear 18 to drive screw element to rotate under the drive of opening gear 18, the multiple strip recesses 202 corresponding with rib 1831 that annex 20 comprises the inner sleeve structure 204 that is connected with screw element and the surface of the outer engagement on its lateral wall 201 and is arranged on outer engagement surface 201, the outer engagement surface 201 of annex 20 is roughly cylindrical shape, and described recess 202 extends along annex axis direction and to be evenly arranged in opening gear on composition surface 201.Be appreciated that; opening gear 18 and annex 20 are not limited to realize power transmission by rib 1831 with coordinating of recess 202; also can realize spline by other form to coordinate, as long as realize the structure that spline coordinates in a basic manner between the two all should belong to protection scope of the present invention.
On the interior composition surface 1830 of opening gear 18, circumference is provided with holding tank 1832, on the outer engagement surface 201 of annex 20, circumference is provided with the accepting groove 203 corresponding with holding tank 1832, in the present embodiment, holding tank 1832 is C shape groove, and accepting groove 203 is multiplely be positioned at same deep-slotted chip breaker circumferentially.Electric wrench 100 also comprises Flexible Connector 30, Flexible Connector 30 is roughly C shape, annex 20 to be connected in opening gear 18 and to prevent annex 20 from sliding axially in the receiving space that the accepting groove 203 of its holding tank 1832 and annex 20 of being contained in opening gear 18 is formed, in opening gear 18, on composition surface 1830, contiguous holding tank 1832 one end place also offers the limiting section 1833 communicated with holding tank 1832, in the present embodiment, limiting section 1833 is stopper slot, be appreciated that limiting section 1833 also can be spacing hole.Correspondingly on one end of Flexible Connector 30 be provided with positive stop end 301, to prevent Flexible Connector 30 from deviating from holding tank in the limiting section 1833 that the positive stop end 204 of Flexible Connector 30 is arranged on, thus prevent Flexible Connector 30 and opening 182 from interfering.Annex 30 is open sleeve or bridgeware.
Please refer again to Fig. 8, Control Component 19 is for controlling the work of electric wrench 10, and it comprises main switch 191, reset switch 192, switch actuator 193 and circuit board 194.For the comfortableness of raising operation, in the present embodiment, main switch 191, reset switch 192 are oppositely arranged on the both sides, grip part 112 of housing 11, and switch actuator 193 is arranged between main switch 191 and reset switch 192.Circuit board 194 is provided with the control circuit (figure does not demonstrate) rotated for controlling motor 130, switch actuator 193 main switch 191 or reset switch 192 driving with under be switched on or switched off control circuit, main switch 192 is for controlling starting or stoping of electric wrench 10, reset switch 193 is for controlling the reset of opening gear 18, and the opening 182 namely controlling opening gear 18 aligns with the jaw 1113 of housing 11.
Please also refer to Fig. 9 and Figure 10, operation principle of the present invention is: rotate as threaded together part direction with opening gear 18 first rotation direction.When wanting threaded together part, first start the opening 182 that reset switch 192 adjusts opening gear 18 to align with jaw 1113, operator by with treat that object that threaded together part coordinates is through jaw 1113, opening gear 18 is entered into from opening 182, and be installed in the resettlement section 183 of opening gear 18, now turning round 1542 by rotation group supports in the first ratchet portion 1520 by elastic parts 1541, then main switch 191 is started, now the output shaft of motor 130 drives eccentric shaft 150 eccentric rotary by reducing gear 14, eccentric shaft 150 periodically coordinates with the groove 1511 that swing component 151 is offered, thus by motor output shaft along the rotation of its axis be converted into swing component 151 around the shaft 1540 periodic wobble, ratchet 152 is articulated on swing component 151, ratchet 153 is provided with the hook tooth 1530 coordinated with ratchet 152, first ratchet portion 1520 rotates around perpendicular to pivot first rotation direction of described swing component 151 place plane or the second rotation direction under the drive of swing component 151, when described ratchet 152 rotates along the first rotation direction, first ratchet portion 1520 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction, when described ratchet 152 rotates along the second rotation direction, the first ratchet portion 1520 streaks on ratchet 153, and ratchet 153 stops operating.Thus ratchet 153 is periodically rotated along the first rotation direction, thus drive annex 20 to rotate with the first rotation direction by opening gear 18, thus threaded together part.
When screw element will be unscrewed, first start the opening 182 that reset switch 192 adjusts opening gear 18 to align with jaw 1113, operator by with treat that object that threaded together part coordinates is through jaw 1113, opening gear 18 is entered into from opening 182, and be installed in the resettlement section 183 of opening gear 18, now turning round 1542 by rotation group supports in the second ratchet portion 1521 by elastic parts 1541, then main switch 191 is started, now the output shaft of motor 130 drives eccentric shaft 150 eccentric rotary by reducing gear 14, eccentric shaft 150 periodically coordinates with the groove 1511 that swing component 151 is offered, thus by motor output shaft along the rotation of its axis be converted into swing component 151 around the shaft 1540 periodic wobble, ratchet 152 is articulated on swing component 151, ratchet 153 is provided with the hook tooth 1530 coordinated with ratchet 152, second ratchet portion 1521 rotates around perpendicular to pivot first rotation direction of described swing component 151 place plane or the second rotation direction under the drive of swing component 151, when described ratchet 152 rotates along the second rotation direction, second ratchet portion 1521 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction, when described ratchet 152 rotates along the first rotation direction, the second ratchet portion 1521 streaks on ratchet 153, and ratchet 153 stops operating.Ratchet 153 is periodically rotated along the second rotation direction, thus drives annex 20 to rotate with the second rotation direction by opening gear 18, realize unscrewing screw element.
Please refer again to Fig. 9 and Figure 10, electric wrench 10 of the present invention also has manual work pattern, rotates as threaded together part direction with opening gear 18 first rotation direction.When wanting threaded together part, first start the opening 182 that reset switch 192 adjusts opening gear 18 to align with jaw 1113, operator by with treat that object that threaded together part coordinates is through jaw 1113, opening gear 18 is entered into from opening 182, and be installed in the resettlement section 183 of opening gear 18, now turning round 1542 by rotation group supports in the first ratchet portion 1520 by elastic parts 1541, when manually with the first rotation direction roll-shell 11, because the inside transmission mechanism of electric wrench 10 is mutually not stuck, therefore opening gear 18 can rotate with the second rotation direction relative to housing 11, thus drive ratchet 153 also to rotate with the second rotation direction, now hook tooth 1530 is meshed to promote ratchet 152 rotating in same direction with the first ratchet portion 1520, ratchet 152 drives swing component 151 to rotate along the second rotation direction, swing component 151 also can be reverse drive eccentric shaft 150 rotate, when the eccentric part of eccentric shaft 150 is to the reverse drive dead point of matching with groove 1511, then eccentric shaft 150 is oppositely mutually stuck with swing component 151.When now sustained manual is with the first rotation direction roll-shell 11, then annex 20 is driven to rotate with the first rotation direction by opening gear 18, thus locking screw part gradually.In like manner, use electric wrench 10 of the present invention that also can be manual unscrews screw element.
Support housing 111 extends to the grip part 112 of electric wrench 10 from installation portion 1111, ensure that the torsional strength when manually using electric wrench 10 of the present invention, and changement 15 has cut off the power transmission between opening gear 18 and motor output shaft, effectively prevent motor reversal under manual work pattern.
Please refer to Figure 11, the present invention by offering the opening 182 corresponding with jaw 1113 on opening gear 18, thus can screw element be set in opening gear 18 by installation portion 1111, carry out tightening or unclamping action, thus make electric wrench of the present invention when some bolts are long, or can be convenient to use in situation when the nut of stubborn band pipeline etc.And using changement 15 as reversing transmission mechanism, and provide power by motor 130, in use, only screw element need be put into opening gear 18, then start electric wrench 10 of the present invention, tightening or unscrewing of screw element can be realized when not needing roll-shell 11, simple to operation, and working strength is little, operating efficiency is high, also can be easy to use in narrow operating space.
Although the present invention discloses as above in a preferred embodiment thereof, so itself and be not used to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (13)
1. an electric wrench, rotate for driving screw element, it comprises wrench body and the annex for coordinating with screw element, described wrench body comprises housing, power part and changement, it is characterized in that: described wrench body also comprises support transmission component and opening gear, the installation portion that described housing comprises grip part and extended along its length by one end, grip part, described installation portion comprises two chelas be oppositely arranged, jaw is formed between two chelas, described power part, changement, support transmission component and opening gear connect successively and are contained in described housing, its split shed gear to be arranged in described installation portion and can to rotate in installation portion, described opening gear comprises the outer toothed portion be meshed with support transmission component, the opening corresponding with described jaw and the resettlement section communicated with opening, the width of described jaw and described opening is more than or equal to diameter or the width of tubulose or the columnar objects coordinated with described screw element, described annex can be arranged on to spline in the resettlement section of described opening gear, the resettlement section of described opening gear circumferentially be provided with holding tank, the lateral wall of described annex is circumferentially provided with the accepting groove corresponding with holding tank, described electric wrench also comprises Flexible Connector, annex to be connected in opening gear and to prevent annex from sliding axially in the receiving space that the accepting groove of holding tank and annex that described Flexible Connector can be contained in opening gear is formed, in opening gear, on composition surface, contiguous holding tank one end place also offers the limiting section communicated with holding tank, on one end of Flexible Connector, correspondence is provided with positive stop end, the positive stop end of Flexible Connector is arranged in described limiting section to prevent Flexible Connector from deviating from holding tank.
2. electric wrench according to claim 1, it is characterized in that: described resettlement section comprises the interior composition surface be arranged on opening gear inwall, described annex comprises the outer engagement surface be arranged on its lateral wall, described interior composition surface and described outer engagement surface are all roughly cylindrical shape, described interior composition surface is formed with multiple radially-inwardly outstanding rib, described rib extends along opening Gear axis direction and to be evenly arranged in opening gear on composition surface; Described outer engagement is formed with the multiple recesses corresponding with rib on the surface, and described recess is along on composition surface in the extension of annex axis direction also even arrangement annex.
3. electric wrench according to claim 1, is characterized in that: described annex is open sleeve, and described holding tank is C shape groove, and described Flexible Connector is roughly C shape, and described accepting groove is multiplely be positioned at same deep-slotted chip breaker circumferentially.
4. electric wrench according to claim 1, it is characterized in that: described housing is " one " font structure, it comprises the main casing that longitudinally extends and the support housing extended by main casing one end, one end of support housing is fixedly mounted in main casing, the other end extends to main casing outside along shell length direction, installation portion is formed in described support housing one end away from main casing, installation portion comprises two chelas be oppositely arranged, two chelas are roughly curved, an accommodation hole and a jaw communicated with accommodation hole is formed between two chelas, accommodation hole is used for construction opening gear.
5. electric wrench according to claim 1, is characterized in that: described changement is ratchet mechanism or bevel gear mechanism.
6. electric wrench according to claim 5, is characterized in that: be also provided with reducing gear between described power part and changement, and the power that described power part provides passes to changement after being slowed down by reducing gear.
7. electric wrench according to claim 6, it is characterized in that: described changement is ratchet mechanism, it comprises eccentric shaft, swing component, ratchet and ratchet, and described eccentric shaft is articulated on described support housing, and eccentric shaft is connected with the output shaft of power part by reducing gear; Described ratchet is articulated on described swing component, the inner ring of described ratchet is provided with the hook tooth with click-fit, the outer ring of described ratchet is also provided with and the external toothing supporting transmission component and match, ratchet can rotate along first direction or second direction around the pivot perpendicular to described swing component place plane under the drive of swing component, when described ratchet rotates along first direction, ratchet just inserts hook tooth to promote ratchet rotating in same direction; When described ratchet rotates along second direction, ratchet streaks on ratchet, and ratchet stops operating.
8. electric wrench according to claim 7, it is characterized in that: described power part comprises motor and to the power supply of feeding electric motors, described reducing gear is planetary gear reducing mechanism, it comprises planetary gear, ring gear, planet carrier and central gear, central gear is connected with the output shaft spline of motor, planetary gear is meshed with central gear and ring gear respectively, wherein ring gear is fixedly mounted on and supports on housing, planetary gear rotation under the drive of central gear, and revolve round the sun along the output shaft of ring gear around motor; The corresponding planet pin being fixedly installed protrusion on planet carrier, planetary gear to be sleeved on planet pin and can to rotate relative to planet pin, the connection of described planet carrier and eccentric shaft spline.
9. electric wrench according to claim 8, it is characterized in that: described changement comprises commutator, described commutator includes rotating shaft, elastic parts and dial turn round, described swing component is articulated on described support housing by rotating shaft, described elastic parts one end supports in rotating shaft, the other end and described ratchet offset, described ratchet comprises along the symmetrically arranged first ratchet portion of pivot and the second ratchet portion, described elastic parts rotates under rotating shaft drives, and offset with the first ratchet portion or the second ratchet portion, turning round spline for described group is connected in described rotating shaft, with make described dial to turn round axis of rotation can be driven on ratchet, to support position to change elastic parts, thus realize commutation function, described elastic parts comprises stage clip and hollow pins, and described rotating shaft is provided with putting hole, and wherein stage clip one end is connected to the inwall of hollow pins, and the other end is contained in the putting hole of rotating shaft, and described hollow pins offsets with ratchet under the effect of stage clip.
10. electric wrench according to claim 9, it is characterized in that: described swing component comprises swing body and the over cap with swing body fits, described ratchet is arranged on and swings between body and over cap, swing on body and over cap and be provided with shaft hole, described ratchet is arranged with shaft hole is concentric, described swing body and over cap are all relatively set with pilot hole, be contained in pilot hole by screw and described swing body and over cap are fixedly connected with, described rotating shaft passes the shaft hole of described swing body and over cap to enable swing body and over cap axis of rotation relatively, described rotating shaft two ends to be supported on support housing and can relative support housing into rotation.
11. electric wrenches according to claim 10; it is characterized in that: swing at least one parts in body and over cap and be equipped with round boss on the side near another parts; wherein shaft hole is arranged on the center of round boss; described pilot hole is arranged on round boss; round boss is also provided with the pivot hole installing ratchet for pivotable, pivot hole and pilot hole lay respectively at the circumferential both sides of round boss.
12. electric wrenches according to claim 1, it is characterized in that: described support transmission component comprises two drives, each drive both sides engage each other with opening gear and changement respectively, and the opening size of opening gear is less than the maximum engagement distance between two drives and opening gear.
13. electric wrenches according to claim 1, it is characterized in that: described electric wrench also comprises Control Component, described Control Component comprises main switch, reset switch, switch actuator and circuit board, wherein main switch, reset switch are oppositely arranged on the both sides, grip part of housing, described switch actuator is arranged between main switch and reset switch, circuit board is provided with the control circuit for controlling electric machine rotation.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310063713.8A CN103909490B (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
| US14/096,224 US9381625B2 (en) | 2012-12-29 | 2013-12-04 | Electrical wrench |
| GB1321454.9A GB2509391B (en) | 2012-12-29 | 2013-12-05 | Electrical wrench |
| DE202013105719.3U DE202013105719U1 (en) | 2012-12-29 | 2013-12-17 | Electric wrench |
| FR1363545A FR3000417B3 (en) | 2012-12-29 | 2013-12-24 | ELECTRIC SHOCK KEY |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220745626.1 | 2012-12-29 | ||
| CN201210590179 | 2012-12-29 | ||
| CN201220745626 | 2012-12-29 | ||
| CN201210590179.1 | 2012-12-29 | ||
| CN201310063713.8A CN103909490B (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909490A CN103909490A (en) | 2014-07-09 |
| CN103909490B true CN103909490B (en) | 2016-02-10 |
Family
ID=48968952
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200923031U Withdrawn - After Issue CN203141397U (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
| CN201310063713.8A Expired - Fee Related CN103909490B (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200923031U Withdrawn - After Issue CN203141397U (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN203141397U (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209912A (en) * | 2013-05-30 | 2014-12-17 | 上海昆杰五金工具有限公司 | Electric auxiliary wrench |
| GB2528846A (en) * | 2014-07-30 | 2016-02-10 | Stud Mate Ltd | Mechanised spanner |
| CN107838666A (en) * | 2017-11-06 | 2018-03-27 | 佛山科学技术学院 | A kind of secondary gap adjusting nut handler of portable sliding screw |
| CN109382792B (en) * | 2018-12-12 | 2024-02-02 | 福建易动力电子科技股份有限公司 | Tool for changing opening angle of lifting appliance |
| CN111283602B (en) * | 2020-04-30 | 2020-08-04 | 常州安费诺福洋通信设备有限公司 | Rotary wrench |
| CN112086844B (en) * | 2020-09-14 | 2022-01-21 | 国网山东省电力公司商河县供电公司 | Safe auxiliary dismounting tool for electric power threaded connector |
| CN114654408A (en) * | 2020-12-22 | 2022-06-24 | 中国铁路武汉局集团有限公司科学技术研究所 | Loose joint disassembling tool |
| CN117655966B (en) * | 2024-01-30 | 2024-04-05 | 四川懋润电力科技有限公司 | Socket wrench |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038016A (en) * | 2006-03-17 | 2007-09-19 | 吴学新 | Power-driven multiplication transmission device |
| CN201664908U (en) * | 2007-06-15 | 2010-12-08 | 布莱克和戴克公司 | Mixed impact tool |
| CN201776742U (en) * | 2009-05-05 | 2011-03-30 | 布莱克和戴克公司 | Power tool |
| DE102010024260A1 (en) * | 2009-06-19 | 2011-07-21 | Sumitomo Heavy Industries, Ltd. | A power train assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4160628B1 (en) * | 2007-11-26 | 2008-10-01 | 昌幸 池田 | Transmission |
-
2013
- 2013-02-28 CN CN2013200923031U patent/CN203141397U/en not_active Withdrawn - After Issue
- 2013-02-28 CN CN201310063713.8A patent/CN103909490B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101038016A (en) * | 2006-03-17 | 2007-09-19 | 吴学新 | Power-driven multiplication transmission device |
| CN201664908U (en) * | 2007-06-15 | 2010-12-08 | 布莱克和戴克公司 | Mixed impact tool |
| CN201776742U (en) * | 2009-05-05 | 2011-03-30 | 布莱克和戴克公司 | Power tool |
| DE102010024260A1 (en) * | 2009-06-19 | 2011-07-21 | Sumitomo Heavy Industries, Ltd. | A power train assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203141397U (en) | 2013-08-21 |
| CN103909490A (en) | 2014-07-09 |
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Granted publication date: 20160210 Termination date: 20200228 |