CN103909491B - Electric wrench - Google Patents
Electric wrench Download PDFInfo
- Publication number
- CN103909491B CN103909491B CN201310065014.7A CN201310065014A CN103909491B CN 103909491 B CN103909491 B CN 103909491B CN 201310065014 A CN201310065014 A CN 201310065014A CN 103909491 B CN103909491 B CN 103909491B
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- China
- Prior art keywords
- ratchet
- gear
- opening
- electric wrench
- housing
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- 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
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
- B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
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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
-
- 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
- B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- Transmission Devices (AREA)
Abstract
A kind of electric wrench, including housing, power part, ratchet mechanism, support transmission component and opening gear, one end of described housing is formed with installation portion, described power part, ratchet mechanism, support transmission component and opening gear are sequentially connected with and are contained in described housing, screw element passes described installation portion to arrive in described opening gear, described support transmission component is connected with opening gear and drives opening pinion rotation, thus realizes tightening or unscrewing of screw element.The electric wrench of the present invention is in the case of some bolts are long, when twisting the nut of band pipeline, or can be convenient to use when the relatively narrower of working place, using ratchet mechanism as reversing transmission mechanism, motor provide power, in use, screw element only need to be put into the Power Tong mouth spanner then starting the present invention in the sleeve of opening gear, tightening or unscrewing of screw element can be realized in the case of being not required to roll-shell, simple to operation, and working strength is little, work 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 typically to be used for tightening or unscrew screw, nut.Conventional spanner has open-end wrench and ratchet spanner two kinds.Screw element can be put at the lateral opening of spanner by general open-end wrench, but it is being tightened or in unscrewing operation, it is accomplished by from screw element, take off spanner after screw element is rotated a less corner, spanner changes an angle the most again be placed on screw element to be rotated further, this process is the most to be repeated repeatedly, until screw element is fully tightened or unclamps, therefore operate inconvenience, and open-end wrench is generally not suitable in some narrow spaces using.The nip part of ratchet spanner is usually enclosed construction, therefore to realize tightening or unscrew screw element and from the top of screw element or bottom, ratchet spanner need to be entangled screw element, use inconvenience.For improving work efficiency and the convenience of use, market occurs in that some electric wrenches, but, the work head of these electric wrenches is usually enclosed construction, therefore is generally only capable of in the case of bolt is shorter using.In auto repair or Decoration Industry, having 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.It addition, common electric wrench is more inconvenient when the nut coordinated with tubular object (such as water pipe, oil pipe), common electric wrench even cannot be used to carry out operation.
Summary of the invention
Present invention aim at providing a kind of to use and easy to operate electric wrench at narrow space.
nullFor reaching above-mentioned purpose，The present invention provides a kind of electric wrench，For driving screw element to rotate，It includes housing、Power part and ratchet mechanism，One end of described housing is formed with installation portion，Described installation portion includes two chelas being oppositely arranged，It is formed with jaw between two chelas，Described electric wrench also includes supporting transmission component and opening gear，Described power part、Ratchet mechanism、Support transmission component and opening gear is sequentially connected with and is contained in described housing，Its split shed gear is arranged in described installation portion and can rotate in installation portion，Described opening gear includes and supports the outer toothed portion that transmission component is meshed、The opening corresponding with described jaw and the drive division communicated with opening，The width of described jaw and described opening is more than or equal to the tubulose that coordinates with described screw element or the diameter of columnar objects or width，Drive division is for driving screw element or the adnexa rotation coordinated with screw element；The power that described power part is provided is delivered to support on transmission component by ratchet mechanism, and drives opening pinion rotation by supporting transmission component.
Preferably, described housing is " one " font structure, it includes the main casing that longitudinally extends and the support housing extended by main casing one end, the one end supporting housing is fixedly mounted in main casing, the other end extends to outside main casing along shell length direction, installation portion is formed at described support housing one end away from main casing, installation portion includes two chelas being oppositely arranged, two chelas are generally curved, being also formed with a receiving hole communicated with described jaw between two chelas, opening gear is arranged in receiving hole.
Preferably, being additionally provided with reducing gear between described power part and ratchet mechanism, the power that described power part is provided passes to ratchet mechanism after being slowed down by reducing gear.
Preferably, described reducing gear is planetary gear reducing mechanism or bevel gear reducing mechanism.
Preferably, described ratchet mechanism includes that eccentric shaft, swing component, ratchet and ratchet, described eccentric shaft are articulated on described support housing, and eccentric shaft connects with the output shaft of power part；Described ratchet is articulated on described swing component, the hook tooth with click-fit it is provided with on the inner ring of described ratchet, the outer ring of described ratchet is provided with and supports the external toothing that transmission component matches, ratchet can in the first direction or second direction rotates around being perpendicular to the pivot of described swing component place plane under the drive of swing component, when described ratchet is rotated in a first direction, ratchet is inserted into hook tooth to promote ratchet rotating in same direction；When described ratchet rotates in a second direction, ratchet streaks on ratchet, and ratchet stops operating.
Preferably, described ratchet mechanism includes that eccentric shaft, swing component, ratchet and ratchet, described eccentric shaft are 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 hook tooth with click-fit it is provided with on the inner ring of described ratchet, the outer ring of described ratchet is additionally provided with and supports the external toothing that transmission component matches, ratchet can in the first direction or second direction rotates around being perpendicular to the pivot of described swing component place plane under the drive of swing component, when described ratchet is rotated in a first direction, ratchet just inserts hook tooth to promote ratchet rotating in same direction；When described ratchet rotates in a second direction, ratchet streaks on ratchet, and ratchet stops operating.
Preferably, described power part includes motor and the power supply powered to motor, described reducing gear is planetary gear reducing mechanism, it includes 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 support housing, planetary gear rotation under the drive of central gear, and revolve round the sun along ring gear around the output shaft of motor；The corresponding planetary gear axle being fixedly installed protrusion on planet carrier, planetary gear is sleeved on planetary gear axle and can rotate relative to planet gear shaft, described planet carrier and the connection of eccentric shaft spline.
Preferably, described ratchet mechanism includes diverter, described diverter includes rotating shaft, elastic parts and group torsion, described swing component is articulated on described support housing by rotating shaft, described elastic parts one end supports in rotating shaft, the other end offsets with described ratchet, described ratchet includes 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, turn round spline for described group to be connected in described rotating shaft, so that the described group of torsion can drive axis of rotation to support position on ratchet changing elastic parts, thus realize commutation function.
Preferably, described elastic parts includes 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 includes swinging body and the protection cap with swing body fits, described ratchet is arranged between swing body and protection cap, swing and be provided with shaft hole in body and protection cap, described ratchet is arranged concentrically with shaft hole, pilot hole all it is relatively set with on described swing body and protection cap, it is contained in pilot hole by screw and connects fixing to described swing body and protection cap, described rotating shaft through described swing body and protection cap shaft hole so that swing body and protection cap can axis of rotation relatively, described rotating shaft two ends are supported on support housing and can relative support housing into rotation.
Preferably; swing at least one parts in body and protection cap and be equipped with round boss on the side of another parts; wherein shaft hole is arranged on the center of round boss; described pilot hole is arranged on round boss; being additionally provided with the pivot hole for pivotally mounted ratchet on round boss, pivot hole and pilot hole lay respectively at the circumferential both sides of round boss.
Preferably, described support transmission component includes two drives, and two drives are symmetrical centered by axis；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 drive division is inner sleeve structure.
Preferably, described electric wrench also includes controlling assembly, described control assembly includes master switch, reset switch, switch actuator and circuit board, wherein master switch, reset switch are oppositely arranged on the both sides, grip part of housing, described switch actuator is arranged between master switch and reset switch, and circuit board is provided with the control circuit for controlling electric machine rotation.
The present invention is by offering the opening corresponding with jaw on opening gear, such that it is able to screw element is set in opening gear by installation portion, carry out tightening or unclamping action, so that the electric wrench of the present invention is in the case of some bolts are long, or when the nut of stubborn band pipeline when can be convenient to use.And using ratchet mechanism as reversing transmission mechanism, and provided power by motor, in use, only screw element need to be put into the electric wrench then starting the present invention in opening gear, tightening or unscrewing of screw element can be realized in the case of being not required to roll-shell, simple to operation, and also working strength is little, work efficiency is high, also can conveniently use in narrow working place.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the electric wrench of embodiment of the present invention；
Fig. 2 is the structural representation after the electric wrench of embodiment of the present invention removes shell body and upper support frame；
Fig. 3 is the structural representation after Fig. 2 removes the protection cap of swing component；
Fig. 4 is the three-dimensional exploded view of the electric wrench housing of embodiment of the present invention；
Fig. 5 is the electric wrench motor three-dimensional exploded view with reducing gear of embodiment of the present invention；
Fig. 6 is the three-dimensional exploded view of the electric wrench ratchet mechanism of embodiment of the present invention；
Fig. 7 is the front view after the electric wrench of embodiment of the present invention removes housing；
Fig. 8 is the electric wrench opening gear operation schematic diagram of embodiment of the present invention；
Fig. 9 is the electric wrench opening gear operation schematic diagram to other direction of embodiment of the present invention；
Figure 10 is the use view of the electric wrench of embodiment of the present invention.
Detailed description of the invention
In order to know more about the technology contents of the present invention, especially exemplified by detailed description of the invention and coordinate institute's accompanying drawings to be described as follows.
Refer to Fig. 1 ~ 3, a kind of electric wrench 10, including housing 11, power part 13, reducing gear 14, ratchet mechanism 15, support transmission component 17, opening gear 18 and control assembly 19.
Housing 11 is " one " font structure, and it includes 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, ratchet mechanism 15, support transmission component 17 and opening gear 18 are sequentially connected with and are contained in described housing 11.
Please also refer to Fig. 4, in the present embodiment, main casing 110 includes the first shell body 1101 and second housing body 1102, mutual clamping between first shell body 1101 and second housing body 1102, and fasten with screw, receiving chamber (figure is not marked) it is formed with, to accommodate power part 13, reducing gear 14 and to support one end of housing 111 between first shell body 1101 and second housing body 1102.Interference can also be used to be connected between first shell body 1101 and second housing body 1102, snapping, grafting, the mode such as pin connection, as long as the first shell body 1101 can be fastened with second housing body 1102 and the connected mode of easy accessibility all should belong to protection scope of the present invention.
The one end supporting housing 111 is formed with installation portion 1111, installation portion 1111 includes two chelas being oppositely arranged 1112, two chelas 1112 are generally curved, being formed with a receiving hole (figure is not marked) and a jaw communicated with receiving hole 1113 between two chelas 1112, receiving hole is used for construction opening gear 18.The one end supporting 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 the electric wrench 10 of present invention during in order to ensure manual operation, the first end supporting housing 111 extends to the grip part 112 of housing 11.In the present embodiment, support housing 111 and include the first bracing frame 1114 and the second bracing frame 1115, 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 second mutual clamping of bracing frame 1115, so make electric wrench 10 compact conformation of the present invention and torsional strength is high, it is thus possible to for the bigger moment of torsion of transmission.
In operation, electric wrench 10 can overlap the object installing to coordinate with screw element from side by jaw 1113, then it is installed to screw element in drive division carry out tightening or unclamping action, so that the electric wrench 10 of the present invention is in the case of some bolts are long, or when the nut of stubborn band pipeline, or can be convenient to use when the relatively narrower of working place.
Power part 13 is for providing power to ratchet mechanism 15, and it includes motor 130 and provides the power supply 131 of power source to motor 130.In embodiments, power supply 131 is battery, such as, and lithium battery or Ni-MH battery.It is appreciated that, it is also possible to not arranging power supply in housing 11, and directly powered by external power supply, such as, powered by alternating current power supply, now, power part is alternating current generator.
Refer to Fig. 5, reducing gear 14 is for passing to ratchet mechanism 15 by the power that power part 13 provides, and its clutch end is connected with ratchet mechanism 15.Reducing gear 14 is arranged between power part 13 and ratchet mechanism 15 for reducing the rotating speed of motor 130, improves moment of torsion.
So that the structure of electric wrench 10 is compacter, bigger 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 includes 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 in being evenly distributed on ring gear 141 and is 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 ring gear 141 around the output shaft of motor 130.The corresponding planetary gear axles 1420 being fixedly installed three protrusions on planet carrier 142, planetary gear 140 is sleeved on planetary gear axle 1420 and can rotate relative to planet gear shaft 1420.Planet carrier 142 around the output shaft rotation of motor 130, and is connected to impart power to ratchet mechanism 15 with ratchet mechanism 15 under the drive of planetary gear 140.Being appreciated that present embodiment is the preferred version of the present invention, reducing gear 14 is not limited to planetary gear reducing mechanism, it is also possible to for other reducing gears, such as bevel gear reducing mechanism.
Refer to Fig. 2 and Fig. 6, ratchet mechanism 15 includes 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 do not mark), and eccentric part connects with swing component 151 with the reciprocally swinging that motor output shaft pivots about for swing component 151 axle around the convert rotational motion of axis.Swing component 151 is articulated on support housing 111, and swing component 151 is provided with groove 1510 corresponding with the eccentric part of eccentric shaft 150, and eccentric part is set with the actuating sleeve 1501 coordinated with groove 1510.Actuating sleeve 1501 is around the eccentric rotation of the central axis of eccentric shaft 150, and during its eccentric rotary, actuating sleeve 1501 drives swing component 151 around the reciprocally swinging in pivotal axis cycle.
It is appreciated that, preferably slow down and the effect increasing moment of torsion owing to ratchet mechanism 15 itself can play, therefore reducing gear 14 can also be omitted, directly it is connected with the eccentric shaft 150 of ratchet mechanism 15 by the output shaft of motor 130 or the output shaft of motor 130 is designed to the form of eccentric shaft and cooperate with swing component 151, realize ratchet mechanism 15 and transmit the function of power.
Ratchet 152 is articulated on swing component 151, the hook tooth 1530 coordinated with ratchet 152 it is provided with on ratchet 153, ratchet 152 can in the first direction or second direction rotates around being perpendicular to the pivot axis of described swing component 151 place plane under the drive of swing component 151, when described ratchet 152 is rotated in a first direction, ratchet 152 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction；When described ratchet 152 rotates in a second direction, ratchet 152 streaks on ratchet 153, and ratchet 153 stops operating.
Refer to Fig. 3, so that the structure of electric wrench of the present invention 10 is compacter, ratchet mechanism 15 is internal gearing structure, and hook tooth 1530 is arranged on ratchet 153 inner ring, and the outer ring of ratchet 153 is additionally provided with and supports the external toothing 1531 that transmission component 17 matches.
Referring again to Fig. 6, change the rotation direction of ratchet 153 for convenience, ratchet mechanism 15 also includes diverter 154, diverter 154 includes rotating shaft 1540, elastic parts 1541 and dials torsion 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 offsets with ratchet 152, ratchet 152 includes symmetrically arranged first ratchet portion 1520 and the second ratchet portion 1521, and 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 is rotated in a first direction, first ratchet portion 1520 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction, when ratchet 152 rotates in a 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 in a second direction, second ratchet portion 1521 just inserts hook tooth 1530 to promote ratchet 153 rotating in same direction, when ratchet 152 is rotated in a first direction, second ratchet portion 1521 streaks on ratchet 153, and ratchet 153 stops operating.Dial torsion 1542 splines to be connected in rotating shaft 1540, turn round 1542 rotations that can drive rotating shaft 1540 by dialling, elastic parts 1541 is supported in the first ratchet portion 1520 or the second ratchet portion 1521, thus realize commutation function.
Wherein, elastic parts 1541 includes stage clip 1543 and hollow pins 1544, putting hole 1545 it is provided with in rotating shaft 1540, 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 protect ratchet 153 and being positioned at the ratchet 152 of ratchet 153; swing component 151 includes swinging body 1511 and a protection cap 1512 that can coordinate with swing body 1511; ratchet 153 is rotating to be arranged between swing body 1511 and protection cap 1512; swinging and be provided with the shaft hole worn for rotating shaft 1540 in body 1511 and protection cap 1512, ratchet 153 is arranged concentrically with shaft hole.Rotating shaft 1540 is through swinging the shaft hole of body 1511 and protection cap 1512 so that swing body 1511 and protection cap 1512 can rotate by phase countershaft 1540, and rotating shaft 1540 two ends are supported on support housing 111 and can rotate by relative support housing 111.
In order to increase the intensity swinging body 1511 and convenient location, swinging the side of close protection cap 1512 on body 1511 and be provided with round boss 1513, ratchet 153 is arranged concentrically with round boss 1513.Shaft hole (figure is not marked) is arranged on the center of the round boss 1513 swinging body 1511.All being correspondingly arranged on pilot hole in round boss 1513 and protection cap 1512, being contained in pilot hole by screw (not shown) can be by described swing body 1511 and the fixing connection of protection cap 1513.The pivot hole 1514 for pivotally mounted ratchet 152 it is further opened with, in order to prevent ratchet 152 mutual with rigging screw on round boss 1513Diffraction, pivot hole 1514 and pilot hole lay respectively at the circumferential both sides of round boss 1513.It is appreciated that; round boss 1513 can also be arranged in protection cap 1512; or protection cap 1512 is all correspondingly arranged on round boss 1513 with swinging on body 1511, and ratchet 153 is rotating to be sleeved on round boss 1513, so that the structure of the electric wrench 10 of the present invention is compacter.
Referring again to Fig. 2 and Fig. 3, support transmission component 17 and be used for being delivered to the power of ratchet mechanism 15 opening gear 18, support transmission component 17 and engage each other with opening gear 18.
In the present invention, support transmission component 17 and include two drives 170 engaged with the external toothing 1531 of opening gear 18 and ratchet 153 respectively.So that transmission is more steady, structure is compacter, and two drives 170 are symmetrical centered by the axis of motor output shaft.It is appreciated that so that power transmission is more stable, it is also possible between two above-mentioned symmetrically arranged drives 170, increase some drives.Certainly; supporting transmission component 17 can also be for chain or the tubular structure with external gear; as long as the power of ratchet 153 can be delivered on opening gear 18; and ensure that opening gear 18 supports transmission component 17 in rotation process and has part to be meshed with opening gear 18 all the time, thus the transmission component driving opening gear 18 to rotate smoothly all should belong to protection scope of the present invention.
Please also refer to Fig. 1 and Fig. 7, opening gear 18 is meshed with supporting transmission component 17, and may be rotatably mounted in the installation portion 1111 supporting housing 111.
Opening gear 18 includes and supports outer toothed portion 181, the opening 182 entered from side for screw element and the drive division 183 communicated with opening 182 that transmission component 17 is meshed, drive division 183 is inner sleeve structure, and its shape is corresponding with the head of the screw element of required driving.In order to ensure the stability that power transmits, the openings of sizes of opening gear 18 is less than the maximum engagement distance supported between transmission component 17 and opening gear 18.It is appreciated that, in order to be suitable for various sizes of screw element, adnexa (not shown) can be connected on drive division 183, adnexa can be the open sleeve or transducer that can coordinate with various sizes of screw element, it is connected on opening gear 18 to adnexa spline, adnexa is connected by Flexible Connector (not shown) with opening gear 18, and opening gear 18 drives adnexa to rotate to tighten or to unscrew the screw element being placed in adnexa by supporting the power of transmission component 17 transmission.
Referring again to Fig. 7, controlling assembly 19 and be used for controlling the work of electric wrench 10, it includes master switch 191, reset switch 192, switch actuator 193 and circuit board 194.For improving the comfortableness of operation, in the present embodiment, master 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 master switch 191 and reset switch 192.It is provided with for controlling the control circuit (not shown) that motor 130 rotates on circuit board 194, switch actuator 193 is switched on or switched off control circuit under the driving of master switch 191 or reset switch 192, master 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 i.e. controlling opening gear 18 aligns with the jaw 1113 of housing 11.
Please also refer to Fig. 8 and Fig. 9, the operation principle of the present invention is: rotate as tightening screw element direction with opening gear 18 first rotation direction.nullWhen screw element to be tightened，First start reset switch 192 to adjust the opening 182 of opening gear 18 and align with jaw 1113，The tubulose coordinated with screw element to be tightened or columnar objects are passed jaw 1113 by operator，From opening 182 and enter into opening gear 18，And screw element is installed in the drive division 183 of opening gear 18，Now by rotating group torsion 1542, elastic parts 1541 is supported in the first ratchet portion 1520，Then master 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 offered on swing component 151，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，The hook tooth 1530 coordinated with ratchet 152 it is provided with on ratchet 153，First ratchet portion 1520 rotates around pivot the first rotation direction or the second rotation direction being perpendicular to described swing component 151 place plane 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.So that ratchet 153 periodically rotates along the first rotation direction, thus drive opening gear 18 first rotation direction to rotate, thus tighten screw element.
nullWhen screw element to be unscrewed，First start reset switch 192 to adjust the opening 182 of opening gear 18 and align with jaw 1113，The tubulose coordinated with screw element to be tightened or columnar objects are passed jaw 1113 by operator，From opening 182 and enter into opening gear 18，And screw element is installed in the drive division 183 of opening gear 18，Now by rotating group torsion 1542, elastic parts 1541 is supported in the second ratchet portion 1521，Then master 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 offered on swing component 151，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，The hook tooth 1530 coordinated with ratchet 152 it is provided with on ratchet 153，Second ratchet portion 1521 rotates around pivot the first rotation direction or the second rotation direction being perpendicular to described swing component 151 place plane 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 adnexa 102 to rotate with the second rotation direction by opening gear 101, realize unscrewing screw element.
Referring again to Fig. 8 and Fig. 9, the electric wrench 10 of the present invention also has manual work pattern, rotates as tightening screw element direction with opening gear 18 first rotation direction.nullWhen screw element to be tightened，First start reset switch 192 to adjust the opening 182 of opening gear 18 and align with jaw 1113，The tubulose coordinated with screw element to be tightened or columnar objects are passed jaw 1113 by operator，From opening 182 and enter into opening gear 18，And screw element is installed in the drive division 183 of opening gear 18，Now by rotating group torsion 1542, elastic parts 1541 is supported in the first ratchet portion 1520，When manually with the first rotation direction roll-shell 11，Owing to the internal drive mechanism of electric wrench 10 is the most 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 matched with groove 1511，Then eccentric shaft 150 is the most stuck with swing component 151.When now sustained manual is with the first rotation direction roll-shell 11, then screw element can be driven to rotate with the first rotation direction by opening gear 18, thus gradually locking screw part.In like manner, it is also possible to the electric wrench 10 of the manual use present invention unscrews screw element.
Support housing 111 and extend to the grip part 112 of electric wrench 10 from installation portion 1111, ensure that the torsional strength when manually using the electric wrench 10 of the present invention, and ratchet mechanism 15 has cut off the power transmission between opening gear 18 and motor output shaft, effectively prevent motor reversal under manual work pattern.
Refer to Figure 10, the present invention is by offering the opening 182 corresponding with jaw 1113 on opening gear 18, such that it is able to screw element is set in opening gear 18 by installation portion 1111, carry out tightening or unclamping action, so that the electric wrench of the present invention is in the case of some bolts are long, or when the nut of stubborn band pipeline when can be convenient to use.And using ratchet mechanism 15 as reversing transmission mechanism, and provided power by motor 130, in use, only screw element need to be put in opening gear 18, then start the electric wrench 10 of the present invention, tightening or unscrewing of screw element can be realized in the case of being not required to roll-shell 11, simple to operation, and working strength is little, work efficiency is high, also can conveniently use in narrow working place.
Although the present invention is the most disclosed above, so it is not limited to 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)
- null1. an electric wrench，For driving screw element to rotate，It includes housing、Power part and ratchet mechanism，It is characterized in that: one end of described housing is formed with installation portion，Described installation portion includes two chelas being oppositely arranged，It is formed with jaw between two chelas，Described electric wrench also includes supporting transmission component and opening gear，Described power part、Ratchet mechanism、Support transmission component and opening gear is sequentially connected with and is contained in described housing，Its split shed gear is arranged in described installation portion and can rotate in installation portion，Described opening gear includes and supports the outer toothed portion that transmission component is meshed、The opening corresponding with described jaw and the drive division communicated with opening，The width of described jaw and described opening is more than or equal to the tubulose that coordinates with described screw element or the diameter of columnar objects or width，Drive division is for driving screw element or the adnexa rotation coordinated with screw element；The power that described power part is provided is delivered to support on transmission component by ratchet mechanism, and drives opening pinion rotation by supporting transmission component；Described ratchet mechanism includes eccentric shaft, swing component, ratchet and ratchet, described housing is " one " font structure, it includes the main casing that longitudinally extends and the support housing extended by main casing one end, described eccentric shaft is articulated on described support housing, and eccentric shaft connects with the output shaft of power part；Described ratchet is articulated on described swing component, the hook tooth with click-fit it is provided with on the inner ring of described ratchet, the outer ring of described ratchet is provided with and supports the external toothing that transmission component matches, ratchet can in the first direction or second direction rotates around being perpendicular to the pivot of described swing component place plane under the drive of swing component, when described ratchet is rotated in a first direction, ratchet is inserted into hook tooth to promote ratchet rotating in same direction；When described ratchet rotates in a second direction, ratchet streaks on ratchet, and ratchet stops operating.
- Electric wrench the most according to claim 1, it is characterized in that: the one end supporting housing is fixedly mounted in main casing, the other end extends to outside main casing along shell length direction, installation portion is formed at described support housing one end away from main casing, installation portion includes two chelas being oppositely arranged, two chelas are generally curved, are also formed with a receiving hole communicated with described jaw between two chelas, and opening gear is arranged in receiving hole.
- Electric wrench the most according to claim 1, it is characterised in that: being additionally provided with reducing gear between described power part and ratchet mechanism, the power that described power part is provided passes to ratchet mechanism after being slowed down by reducing gear.
- Electric wrench the most according to claim 3, it is characterised in that: described reducing gear is planetary gear reducing mechanism or bevel gear reducing mechanism.
- Electric wrench the most according to claim 3, it is characterised in that: described ratchet mechanism includes that eccentric shaft, swing component, ratchet and ratchet, described eccentric shaft are 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 hook tooth with click-fit it is provided with on the inner ring of described ratchet, the outer ring of described ratchet is additionally provided with and supports the external toothing that transmission component matches, ratchet can in the first direction or second direction rotates around being perpendicular to the pivot of described swing component place plane under the drive of swing component, when described ratchet is rotated in a first direction, ratchet just inserts hook tooth to promote ratchet rotating in same direction；When described ratchet rotates in a second direction, ratchet streaks on ratchet, and ratchet stops operating.
- Electric wrench the most according to claim 5, it is characterized in that: described power part includes motor and the power supply powered to motor, described reducing gear is planetary gear reducing mechanism, it includes 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 support housing, planetary gear rotation under the drive of central gear, and revolve round the sun along ring gear around the output shaft of motor；The corresponding planetary gear axle being fixedly installed protrusion on planet carrier, planetary gear is sleeved on planetary gear axle and can rotate relative to planet gear shaft, described planet carrier and the connection of eccentric shaft spline.
- 7. according to the electric wrench described in claim 4 or 5, it is characterized in that: described ratchet mechanism includes diverter, described diverter includes rotating shaft, elastic parts and group torsion, described swing component is articulated on described support housing by rotating shaft, described elastic parts one end supports in rotating shaft, the other end offsets with described ratchet, described ratchet includes 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, turn round spline for described group to be connected in described rotating shaft, so that the described group of torsion can drive axis of rotation to support position on ratchet changing elastic parts, thus realize commutation function.
- Electric wrench the most according to claim 7, it is characterized in that: described elastic parts includes stage clip and hollow pins, it is provided with putting hole in described rotating shaft, wherein stage clip one end is connected to the inwall of hollow pins, 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.
- Electric wrench the most according to claim 7, it is characterized in that: described swing component includes swinging body and the protection cap with swing body fits, described ratchet is arranged between swing body and protection cap, swing and be provided with shaft hole in body and protection cap, described ratchet is arranged concentrically with shaft hole, pilot hole all it is relatively set with on described swing body and protection cap, it is contained in pilot hole by screw and connects fixing to described swing body and protection cap, described rotating shaft through described swing body and protection cap shaft hole so that swing body and protection cap can axis of rotation relatively, described rotating shaft two ends are supported on support housing and can relative support housing into rotation.
- Electric wrench the most according to claim 9; it is characterized in that: swing at least one parts in body and protection cap and be equipped with round boss on the side of another parts; wherein shaft hole is arranged on the center of round boss; described pilot hole is arranged on round boss; being additionally provided with the pivot hole for pivotally mounted ratchet on round boss, pivot hole and pilot hole lay respectively at the circumferential both sides of round boss.
- 11. electric wrenches according to claim 6, it is characterized in that: described support transmission component includes two drives, two drives are symmetrical centered by the axis of the output shaft of motor, each drive both sides external toothing with opening gear and ratchet respectively engages each other, and the opening size of opening gear is less than the maximum engagement distance between two drives and opening gear.
- 12. electric wrenches according to claim 1, it is characterised in that: described drive division is inner sleeve structure.
- 13. electric wrenches according to claim 1, it is characterized in that: described electric wrench also includes controlling assembly, described control assembly includes master switch, reset switch, switch actuator and circuit board, wherein master switch, reset switch are oppositely arranged on the both sides, grip part of housing, described switch actuator is arranged between master switch and reset switch, and circuit board is provided with the control circuit for controlling electric machine rotation.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065014.7A CN103909491B (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 (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220745985.7 | 2012-12-29 | ||
| CN201210590614 | 2012-12-29 | ||
| CN2012105906140 | 2012-12-29 | ||
| CN201220745985 | 2012-12-29 | ||
| CN201210590614.0 | 2012-12-29 | ||
| CN2012207459857 | 2012-12-29 | ||
| CN201310065014.7A CN103909491B (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909491A CN103909491A (en) | 2014-07-09 |
| CN103909491B true CN103909491B (en) | 2016-08-03 |
Family
ID=48968953
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310065014.7A Expired - Fee Related CN103909491B (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
| CN2013200931786U Expired - Fee Related CN203141398U (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200931786U Expired - Fee Related CN203141398U (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
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| Country | Link |
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| CN (2) | CN103909491B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909491B (en) * | 2012-12-29 | 2016-08-03 | 南京德朔实业有限公司 | Electric wrench |
| CN103962997A (en) * | 2014-04-03 | 2014-08-06 | 杭州佳联工具有限公司 | Pneumatic ratchet wheel open spanner and operation method thereof |
| 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 |
| FR3075677B1 (en) * | 2017-12-27 | 2020-01-03 | Etablissements Georges Renault | METHOD FOR SCREWING A NUT AROUND A TUBE INCLUDING A RE-INDEXING, AND CORRESPONDING DEVICE |
| CN110394755A (en) * | 2019-08-30 | 2019-11-01 | 攀钢集团矿业有限公司 | One kind being used for railway track anti-creep stay-bolt spanner |
| CN118700068A (en) * | 2020-03-17 | 2024-09-27 | 北渤智能科技秦皇岛有限公司 | Open type electric wrench for connecting reinforcing steel bars and sleeves |
| CN111546278A (en) * | 2020-05-31 | 2020-08-18 | 江苏金陵智造研究院有限公司 | Open hydraulic wrench |
| CN112959255B (en) * | 2021-02-23 | 2022-12-20 | 王田田 | Electric wrench |
| CN112975815B (en) * | 2021-03-24 | 2023-08-18 | 国网安徽省电力有限公司电力科学研究院 | Electric ratchet wrench |
| CN113400232A (en) * | 2021-06-22 | 2021-09-17 | 江苏科技大学 | Detection device for electromechanical equipment based on ship |
| CN114516007B (en) * | 2022-03-14 | 2024-07-16 | 奇瑞新能源汽车股份有限公司 | Return device and open ratchet wrench |
| DE102023106714A1 (en) | 2023-03-17 | 2024-09-19 | Robert Bosch Gesellschaft mit beschränkter Haftung | Side screw head and side screw power tool |
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| US5584220A (en) * | 1994-03-01 | 1996-12-17 | Darrah; Scott A. | Angle attachment tool |
| JP4246308B2 (en) * | 1998-12-22 | 2009-04-02 | 前田金属工業株式会社 | Nut tightening machine |
| CN101797733A (en) * | 2010-02-03 | 2010-08-11 | 江苏爱康太阳能科技有限公司 | Tool capable of automatically turning nut |
| DE202011102889U1 (en) * | 2011-07-05 | 2011-08-19 | Shu-Su Chan | Fork ratchet wrench |
| CN203141398U (en) * | 2012-12-29 | 2013-08-21 | 南京德朔实业有限公司 | Electric wrench |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11138457A (en) * | 1997-11-10 | 1999-05-25 | Honda Motor Co Ltd | Nut fastening device |
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2013
- 2013-02-28 CN CN201310065014.7A patent/CN103909491B/en not_active Expired - Fee Related
- 2013-02-28 CN CN2013200931786U patent/CN203141398U/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5584220A (en) * | 1994-03-01 | 1996-12-17 | Darrah; Scott A. | Angle attachment tool |
| JP4246308B2 (en) * | 1998-12-22 | 2009-04-02 | 前田金属工業株式会社 | Nut tightening machine |
| CN101797733A (en) * | 2010-02-03 | 2010-08-11 | 江苏爱康太阳能科技有限公司 | Tool capable of automatically turning nut |
| DE202011102889U1 (en) * | 2011-07-05 | 2011-08-19 | Shu-Su Chan | Fork ratchet wrench |
| CN203141398U (en) * | 2012-12-29 | 2013-08-21 | 南京德朔实业有限公司 | Electric wrench |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103909491A (en) | 2014-07-09 |
| CN203141398U (en) | 2013-08-21 |
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