CN103909491A - Electric wrench - Google Patents
Electric wrench Download PDFInfo
- Publication number
- CN103909491A CN103909491A CN201310065014.7A CN201310065014A CN103909491A CN 103909491 A CN103909491 A CN 103909491A CN 201310065014 A CN201310065014 A CN 201310065014A CN 103909491 A CN103909491 A CN 103909491A
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- CN
- China
- Prior art keywords
- ratchet
- gear
- electric wrench
- opening
- swing
- 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.)
- Granted
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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
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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
- B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
Abstract
An electric wrench comprises a casing, a power component, a ratchet mechanism, a supporting transmission module and an open gear. A mounting part is formed at one end of the casing. The power component, the ratchet mechanism, the supporting transmission module and the open gear are sequentially connected and accommodated in the casing, a threaded part penetrates the mounting part to reach the open gear, the supporting transmission module is connected with the open gear and drives the open gear to rotate, and accordingly the threaded part is tightened or unscrewed. The electric wrench can be used conveniently under the conditions that some bolts are too long, pipe nuts are screwed or an operating space is narrow, the ratchet mechanism serves as a reversing transmission mechanism, and power is provided by a motor. In the use process, operators only need to place the threaded part in a sleeve of the open gear and then start the power jaw wrench, the threaded part can be tightened or unscrewed on the conditions that the casing does not need rotating, and the electric wrench is simple and convenient to operate, small in working strength and high in working efficiency.
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 unscrewing screw, nut.Conventional spanner has two kinds of open-end wrench and ratchet spanneres.General open-end wrench can be put into screw element from the lateral opening of spanner, but it is tightening or unscrew in operation, after being rotated to a less corner, just spanner need to be taken off from screw element screw element, and then spanner is changed to angle be placed on screw element to be rotated further, this process will be repeated repeatedly conventionally, until screw element is tightened completely or unclamps, therefore operation is inconvenient, 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 unscrewing screw element and ratchet spanner need be entangled to screw element from top or the bottom of screw element, uses inconvenience.For the convenience of increasing work efficiency and using, on market, occurred some electric wrenches, but the working head of these electric wrenches is generally enclosed construction, therefore conventionally only can use in the situation that bolt is shorter.In auto repair or Decoration Industry, there is the long situation of a lot of bolts, existing electric wrench must coordinate long sleeve to use, and has reduced like this convenience using.In addition, common electric wrench with tubular object (for example water pipe, oil pipe) coordinate nut time more inconvenient, even cannot use common electric wrench to carry out operation.
Summary of the invention
The object of the invention is to provide a kind of and can uses and easy to operate electric wrench at narrow space.
For achieving the above object, the invention provides a kind of electric wrench, be used for driving screw element to rotate, it comprises housing, power part and ratchet mechanism, one end of described housing is formed with installation portion, described installation portion comprises two chelas that are oppositely arranged, between two chelas, be formed with jaw, described electric wrench also comprises support transmission component and opening gear, described power part, ratchet mechanism, supporting transmission component and opening gear connects successively and is contained in described housing, its split shed gear is arranged in described installation portion and can in installation portion, rotates, described opening gear comprises the outer toothed portion being meshed with support transmission component, the opening corresponding with described jaw and the drive division communicating 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 diameter or the width of columnar objects, drive division rotates for the annex that drives screw element or coordinate with screw element, the power that described power part provides is delivered to and is supported on transmission component by ratchet mechanism, and drives opening gear to rotate by supporting transmission component.
Preferably, described housing is " one " font structure, it comprises the main casing that longitudinally extends and the support housing being 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 on described support housing one end away from main casing, installation portion comprises two chelas that are oppositely arranged, two chelas are roughly curved, between two chelas, be also formed with an accommodation hole communicating with described jaw, opening gear is arranged in accommodation hole.
Preferably, be also provided with reducing gear between described power part and ratchet mechanism, the power that described power part provides passes to ratchet mechanism after slowing down by reducing gear.
Preferably, described reducing gear is planetary gear reducing mechanism or bevel gear reducing mechanism.
Preferably, described ratchet mechanism comprises eccentric shaft, swing component, ratchet and ratchet, and described eccentric shaft is articulated on described support housing, and the output shaft of eccentric shaft and power part joins; Described ratchet is articulated on described swing component, on the inner ring of described ratchet, be provided with the hook tooth with click-fit, the outer ring of described ratchet is provided with and the external toothing that supports transmission component and match, ratchet can be around the pivot perpendicular to described swing component place plane along first direction or second direction rotation under the drive of swing component, in the time that described ratchet rotates along first direction, ratchet can insert hook tooth to promote ratchet rotating in same direction; In the time that described ratchet rotates along second direction, ratchet streaks on ratchet, and ratchet stops operating.
Preferably, described ratchet mechanism comprises eccentric shaft, swing component, ratchet and ratchet, and described eccentric shaft is articulated on described support housing, and eccentric shaft joins by the output shaft of reducing gear and power part; Described ratchet is articulated on described swing component, on the inner ring of described ratchet, be provided with the hook tooth with click-fit, the outer ring of described ratchet is also provided with and the external toothing that supports transmission component and match, ratchet can be around the pivot perpendicular to described swing component place plane along first direction or second direction rotation under the drive of swing component, in the time that described ratchet rotates along first direction, ratchet just inserts hook tooth to promote ratchet rotating in same direction; In the time that described ratchet rotates along second direction, ratchet streaks on ratchet, and ratchet stops operating.
Preferably, described power part comprises motor and the power supply to motor power supply, 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 support housing, planetary gear rotation under the drive of central gear, and the output shaft revolution around motor along ring gear; The corresponding planet pin that is fixedly installed protrusion on planet carrier, planetary gear is sleeved on planet pin and can rotates relative to planet pin, and described planet carrier is connected with eccentric shaft spline.
Preferably, described ratchet mechanism 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 symmetrically arranged the 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, so that described group turned round and can drive rotating shaft to rotate to change elastic parts to support position on ratchet, thereby realize commutation function.
Preferably, described elastic parts comprises stage clip and hollow pins, in 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 the over cap that swings body and coordinate with swing body, 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 arranges with shaft hole is concentric, on described swing body and over cap, be all relatively set with pilot hole, be contained in pilot hole described swing body and over cap are fixedly connected with by screw, described rotating shaft through the shaft hole of described swing body and over cap so that swing body and over cap can rotate by phase countershaft, described rotating shaft two end supports is on support housing and can rotate relative to support housing.
Preferably; swing at least one parts in body and over cap and be equipped with round boss near in a side of another parts; wherein shaft hole is arranged on the center of round boss; described pilot hole is arranged on round boss; on round boss, be also provided with the pivot hole that ratchet is installed 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 two drives are symmetrical centered by axis; Each drive both sides are intermeshing 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 comprises Control Component, described Control Component comprises main switch, reset switch, switch drive part and circuit board, wherein main switch, reset switch are oppositely arranged on the both sides, grip part of housing, described switch drive part is arranged between main switch and reset switch, is provided with the control circuit for controlling electric machine rotation on circuit board.
The present invention by offering the opening corresponding with jaw on opening gear, thereby screw element can be set in opening gear by installation portion, tighten or unclamp action, thereby make electric wrench of the present invention in the situation that some bolts are long, or in situation, can be convenient to use in the time twisting nut with pipeline etc.And using ratchet mechanism as reversing transmission mechanism, and provide power by motor, in use, only screw element need be put into and in opening gear, then start electric wrench of the present invention, in the situation that not needing roll-shell, can realize tightening or unscrewing of screw element, simple to operation, and also working strength is little, operating efficiency is high, also can be easy to use in narrow operating space.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of the electric wrench of embodiment of the present invention;
Fig. 2 is that the electric wrench of embodiment of the present invention removes the structural representation after shell body and upper support frame;
Fig. 3 is that Fig. 2 removes the structural representation after the over 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 of embodiment of the present invention and the three-dimensional exploded view of reducing gear;
Fig. 6 is the three-dimensional exploded view of the electric wrench ratchet mechanism of embodiment of the present invention;
Fig. 7 is that the electric wrench of embodiment of the present invention removes the front view after housing;
Fig. 8 is the electric wrench opening gear operation schematic diagram of embodiment of the present invention;
Fig. 9 is that the electric wrench opening gear operation of embodiment of the present invention is to the schematic diagram of other direction;
Figure 10 is the use view of the electric wrench of embodiment of the present invention.
Detailed description of the invention
In order more to understand technology contents of the present invention, especially exemplified by detailed description of the invention and coordinate appended graphic being described as follows.
Please refer to Fig. 1 ~ 3, a kind of electric wrench 10, comprises housing 11, power part 13, reducing gear 14, ratchet mechanism 15, supports 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 being extended by main casing 110 one end.Power part 13, reducing gear 14, ratchet mechanism 15, support transmission component 17 and opening gear 18 connect successively and are contained in described housing 11.
Please also refer to Fig. 4, in the present embodiment, main casing 110 comprises the first shell body 1101 and second housing body 1102, clamping mutually between the first shell body 1101 and second housing body 1102, and with screw fastening, between the first shell body 1101 and second housing body 1102, be formed with container cavity (figure is mark not), to hold one end of power part 13, reducing gear 14 and support housing 111.Between the first shell body 1101 and second housing body 1102, also can adopt the modes such as interference is connected, snapping, grafting, pin connection, as long as the first shell body 1101 all should being belonged to protection scope of the present invention with second housing body 1102 connected mode fastening and easy accessibility.
One end of support housing 111 is formed with installation portion 1111, installation portion 1111 comprises two chelas that are oppositely arranged 1112, two chelas 1112 are roughly curved, between two chelas 1112, be formed with an accommodation hole (figure is mark not) and a jaw communicating with accommodation hole 1113, accommodation hole is for construction opening gear 18.One end of support housing 111 is fixedly mounted in main casing 110, the other end extends to main casing 110 outsides along housing 11 length directions, the intensity of electric wrench 10 of the present invention when ensureing 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 the first bracing frame 1114 is formed in one or hot investment casting part, the second bracing frame 1115 is the lid corresponding with the first bracing frame 1114 structures, the first bracing frame 1114 and the mutual clamping of the second bracing frame 1115, make like this electric wrench 10 compact conformations of the present invention and torsional strength high, thereby can be used for transmitting larger moment of torsion.
In operating process, electric wrench 10 can be overlapped and install on the object coordinating with screw element from the side by jaw 1113, then screw element is installed to and in drive division, tightens or unclamp action, thereby make electric wrench 10 of the present invention in the situation that some bolts are long, or in the time twisting nut with pipeline, or can be convenient to use in the situation such as operating space is narrower.
Power part 13 is for power being provided to ratchet mechanism 15, and it comprises motor 130 and provides the power supply 131 of power source to motor 130.In embodiment, power supply 131 is battery, for example, and lithium battery or Ni-MH battery.Be appreciated that also and can in housing 11, power supply be set, and directly power by external power supply, for example, by ac power supply, now, power part is alternating current generator.
Please refer to Fig. 5, reducing gear 14 passes to ratchet mechanism 15 for the power that power part 13 is provided, and its clutch end is connected with ratchet mechanism 15.Reducing gear 14 is arranged on the rotating speed for reducing motor 130 between power part 13 and ratchet mechanism 15, improves moment of torsion.
In order to make the structure of electric wrench 10 compacter, can transmit larger moment of torsion, 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 is evenly distributed in 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 the output shaft revolution around motor 130 along ring gear 141.The corresponding planet pin 1420 that is fixedly installed three protrusions on planet carrier 142, planetary gear 140 is sleeved on planet pin 1420 and can rotates relative to planet pin 1420.Planet carrier 142 around the output shaft rotation of motor 130, and is connected power to be passed to ratchet mechanism 15 under the drive of planetary gear 140 with ratchet mechanism 15.Be appreciated that present embodiment is preferred version of the present invention, reducing gear 14 is not limited to planetary gear reducing mechanism, can be also other reducing gears, for example bevel gear reducing mechanism.
Please refer to Fig. 2 and Fig. 6, ratchet mechanism 15 comprises eccentric shaft 150, swing component 151, ratchet 152 and ratchet 153.One end of eccentric shaft 150 is connected with planet carrier 142 splines, the other end of eccentric shaft 150 is provided with eccentric part (figure is mark not), and eccentric part and swing component 151 join that motor output shaft is converted into the reciprocally swinging of swing component 151 around its pivotal axis around rotatablely moving of axis.Swing component 151 is articulated on support housing 111, and swing component 151 is provided with the corresponding groove 1510 of eccentric part with eccentric shaft 150, is set with the actuating sleeve 1501 coordinating with groove 1510 on eccentric part.Actuating sleeve 1501 is around the rotation of the central axis bias of eccentric shaft 150, and in the process of its eccentric rotary, actuating sleeve 1501 drives the reciprocally swinging of swing component 151 around the pivotal axis cycle.
Be appreciated that, because ratchet mechanism 15 itself can play good deceleration and the effect that increases moment of torsion, therefore also can omit reducing gear 14, directly by the output shaft of motor 130 and the eccentric shaft 150 of ratchet mechanism 15 is connected or form and swing component 151 that the output shaft of motor 130 is designed to eccentric shaft are cooperatively interacted, realize the function of ratchet mechanism 15 transferring power.
Ratchet 152 is articulated on swing component 151, on ratchet 153, be provided with the hook tooth 1530 coordinating with ratchet 152, ratchet 152 can be around the pivot axis perpendicular to described swing component 151 place planes along first direction or second direction rotation under the drive of swing component 151, in the time that described ratchet 152 rotates along first direction, ratchet 152 just inserts hook tooth 1530 to promote ratchet 153 rotating in same directions; In the time that described ratchet 152 rotates along second direction, ratchet 152 streaks on ratchet 153, and ratchet 153 stops operating.
Please refer to Fig. 3, in order to make the structure of electric wrench 10 of the present invention compacter, ratchet mechanism 15 is internal gearing structure, and hook tooth 1530 is arranged on ratchet 153 inner rings, and the outer ring of ratchet 153 is also provided with and the external toothing 1531 that supports transmission component 17 and match.
Please refer again to Fig. 6, for the convenient rotation direction that changes ratchet 153, ratchet mechanism 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 are fixedly connected in rotating shaft 1540, the other end and ratchet 152 offset, ratchet 152 comprises symmetrically arranged the 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, in the time that elastic parts 1541 and the first ratchet portion 1520 offset, when ratchet 152 rotates along first direction, the first ratchet portion 1520 just inserts hook tooth 1530 to promote ratchet 153 rotating in same directions, when ratchet 152 rotates along second direction, the first ratchet portion 1520 streaks on ratchet 153, and ratchet 153 stops operating, in the time that elastic parts 1541 and the second ratchet portion 1521 offset, when ratchet 152 rotates along second direction, the second ratchet portion 1521 just inserts hook tooth 1530 to promote ratchet 153 rotating in same directions, when ratchet 152 rotates along first direction, the 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, 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, thereby realize commutation function.
Wherein, elastic parts 1541 comprises stage clip 1543 and hollow pins 1544, in rotating shaft 1540, be provided with putting hole 1545, wherein stage clip 1543 one end are 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; rotating being arranged on of ratchet 153 swings between body 1511 and over cap 1512; swing on body 1511 and over cap 1512 and be provided with the shaft hole wearing for rotating shaft 1540, ratchet 153 arranges with shaft hole is concentric.Rotating shaft 1540 is through swinging the shaft hole of body 1511 and over cap 1512 so that swing body 1511 and over cap 1512 can rotate by phase countershaft 1540, and rotating shaft 1540 two end supports are on support housing 111 and can rotate relative to support housing 111.
In order to increase the intensity and the convenient location that swing body 1511, swing the side near over cap 1512 on body 1511 and be provided with round boss 1513, ratchet 153 and the concentric setting of round boss 1513.Shaft hole (figure is mark not) is arranged on the center of the round boss 1513 that swings body 1511.Round boss 1513 and the equal corresponding pilot hole that is provided with on over cap 1512, be contained in pilot hole and described swing body 1511 and over cap 1513 can be fixedly connected with by screw (not shown).On round boss 1513, also offer the pivot hole 1514 that ratchet 152 is installed for pivotable, mutual in order to prevent ratchet 152 and rigging screw
diffraction, pivot hole 1514 and pilot hole lay respectively at the circumferential both sides of round boss 1513.Be appreciated that; also round boss 1513 can be arranged on over cap 1512; or over cap 1512 and the equal corresponding round boss 1513 that is provided with on swing body 1511, 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. 2 and Fig. 3, support transmission component 17 for the power of ratchet mechanism 15 is delivered to opening gear 18, support transmission component 17 intermeshing with opening gear 18.
In the present invention, support transmission component 17 and comprise two drives 170 that engage with the external toothing 1531 of opening gear 18 and ratchet 153 respectively.In order to make transmission more steady, structure is compacter, and two drives 170 are symmetrical centered by the axis of motor output shaft.Be appreciated that in order to make power transmission more stable, also can between two above-mentioned symmetrically arranged drives 170, increase some drives.Certainly; supporting transmission component 17 can be also 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 and has all the time part to be meshed with opening gear 18 in rotation process, thereby the transmission component that drives opening gear 18 to rotate stably 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 is rotatably arranged in the installation portion 1111 of support housing 111.
Opening gear 18 comprises the outer toothed portion 181 being meshed with support transmission component 17, the opening 182 entering from the side for screw element and the drive division 183 communicating with opening 182, drive division 183 is inner sleeve structure, and its shape is corresponding with the head of the screw element of required driving.For the stability that ensures that power transmits, the openings of sizes of opening gear 18 is less than the maximum engagement distance supporting between transmission component 17 and opening gear 18.Be appreciated that, in order to be suitable for the screw element of different size, can be on drive division 183 coupling (not shown), annex can be open sleeve or the converter that can coordinate with the screw element of different size, be connected on opening gear 18 to annex spline, annex is connected by Flexible Connector (not shown) with opening gear 18, and the power that opening gear 18 transmits by support transmission component 17 drives annex to rotate to tighten or unscrew the screw element being placed in annex.
Please refer again to Fig. 7, Control Component 19 is for controlling the work of electric wrench 10, and it comprises main switch 191, reset switch 192, switch drive part 193 and circuit board 194.For improving the comfortableness of operation, in the present embodiment, main switch 191, reset switch 192 are oppositely arranged on 112 both sides, grip part of housing 11, and switch drive part 193 is arranged between main switch 191 and reset switch 192.On circuit board 194, be provided with the control circuit (not shown) of rotating for controlling motor 130, switch drive part 193 the driving of main switch 191 or reset switch 192 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, controls the opening 182 of opening gear 18 and the jaw 1113 of housing 11 aligns.
Please also refer to Fig. 8 and Fig. 9, operation principle of the present invention is: rotate as threaded together part direction taking opening gear 18 first rotation directions.In the time wanting threaded together part, first starting reset switch 192 adjusts the opening 182 of opening gear 18 and aligns with jaw 1113, operator will pass jaw 1113 with treating tubulose or columnar objects that threaded together part coordinates, from opening 182 and enter into opening gear 18, and screw element is installed in the drive division 183 of opening gear 18, now dial and turn round 1542 elastic parts 1541 is supported in the first ratchet portion 1520 by rotation, then start main switch 191, 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 of offering on swing component 151, thereby motor output shaft is converted into swing component 151 1540 periodic wobble around the shaft along the rotation of its axis, ratchet 152 is articulated on swing component 151, on ratchet 153, be provided with the hook tooth 1530 coordinating with ratchet 152, the first ratchet portion 1520 rotates around pivot the first rotation direction perpendicular to described swing component 151 place planes or the second rotation direction under the drive of swing component 151, in the time that described ratchet 152 rotates along the first rotation direction, the first ratchet portion 1520 just inserts hook tooth 1530 to promote ratchet 153 rotating in same directions, in the time that described ratchet 152 rotates along the second rotation direction, the first ratchet portion 1520 streaks on ratchet 153, and ratchet 153 stops operating.Thereby ratchet 153 is periodically rotated along the first rotation direction, thereby drive opening gear 18 first rotation directions to rotate, thereby threaded together part.
In the time will unscrewing screw element, first starting reset switch 192 adjusts the opening 182 of opening gear 18 and aligns with jaw 1113, operator will pass jaw 1113 with treating tubulose or columnar objects that threaded together part coordinates, from opening 182 and enter into opening gear 18, and screw element is installed in the drive division 183 of opening gear 18, now dial and turn round 1542 elastic parts 1541 is supported in the second ratchet portion 1521 by rotation, then start main switch 191, 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 of offering on swing component 151, thereby motor output shaft is converted into swing component 151 1540 periodic wobble around the shaft along the rotation of its axis, ratchet 152 is articulated on swing component 151, on ratchet 153, be provided with the hook tooth 1530 coordinating with ratchet 152, the second ratchet portion 1521 rotates around pivot the first rotation direction perpendicular to described swing component 151 place planes or the second rotation direction under the drive of swing component 151, in the time that described ratchet 152 rotates along the second rotation direction, the second ratchet portion 1521 just inserts hook tooth 1530 to promote ratchet 153 rotating in same directions, in the time that 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, thereby drive annex 102 to rotate with the second rotation direction by opening gear 101, realize and unscrew screw element.
Please refer again to Fig. 8 and Fig. 9, electric wrench 10 of the present invention also has manual work pattern, rotates as threaded together part direction taking opening gear 18 first rotation directions.In the time wanting threaded together part, first starting reset switch 192 adjusts the opening 182 of opening gear 18 and aligns with jaw 1113, operator will pass jaw 1113 with treating tubulose or columnar objects that threaded together part coordinates, from opening 182 and enter into opening gear 18, and screw element is installed in the drive division 183 of opening gear 18, now dial and turn round 1542 elastic parts 1541 is supported in the first ratchet portion 1520 by rotation, 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, thereby drive ratchet 153 also with the second rotation direction rotation, now hook tooth 1530 is meshed to promote ratchet 152 rotating in same directions 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 to match with groove 1511 reverse drive dead point time, eccentric shaft 150 is oppositely mutually stuck with swing component 151.While now continuing manually with the first rotation direction roll-shell 11, can drive screw element 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 the torsional strength in the time manually using electric wrench 10 of the present invention, and ratchet mechanism 15 cut off the power transmission between opening gear 18 and motor output shaft, effectively avoid motor reversal under manual work pattern.
Please refer to Figure 10, the present invention by offering the opening corresponding with jaw 1,113 182 on opening gear 18, thereby screw element can be set in opening gear 18 by installation portion 1111, tighten or unclamp action, thereby make electric wrench of the present invention in the situation that some bolts are long, or in situation, can be convenient to use in the time twisting nut with pipeline etc.And using ratchet mechanism 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, in the situation that not needing roll-shell 11, can realize tightening or unscrewing of screw element, 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 with preferred embodiments, so it is not in order 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 claims person of defining.
Claims (14)
1. an electric wrench, be used for driving screw element to rotate, it comprises housing, power part and ratchet mechanism, it is characterized in that: one end of described housing is formed with installation portion, described installation portion comprises two chelas that are oppositely arranged, between two chelas, be formed with jaw, described electric wrench also comprises support transmission component and opening gear, described power part, ratchet mechanism, supporting transmission component and opening gear connects successively and is contained in described housing, its split shed gear is arranged in described installation portion and can in installation portion, rotates, described opening gear comprises the outer toothed portion being meshed with support transmission component, the opening corresponding with described jaw and the drive division communicating 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 diameter or the width of columnar objects, drive division rotates for the annex that drives screw element or coordinate with screw element, the power that described power part provides is delivered to and is supported on transmission component by ratchet mechanism, and drives opening gear to rotate by supporting transmission component.
2. 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 being 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 on described support housing one end away from main casing, installation portion comprises two chelas that are oppositely arranged, two chelas are roughly curved, between two chelas, be also formed with an accommodation hole communicating with described jaw, opening gear is arranged in accommodation hole.
3. electric wrench according to claim 1, is characterized in that: between described power part and ratchet mechanism, be also provided with reducing gear, the power that described power part provides passes to ratchet mechanism after slowing down by reducing gear.
4. electric wrench according to claim 3, is characterized in that: described reducing gear is planetary gear reducing mechanism or bevel gear reducing mechanism.
5. electric wrench according to claim 1, is characterized in that: described ratchet mechanism comprises eccentric shaft, swing component, ratchet and ratchet, and described eccentric shaft is articulated on described support housing, and the output shaft of eccentric shaft and power part joins; Described ratchet is articulated on described swing component, on the inner ring of described ratchet, be provided with the hook tooth with click-fit, the outer ring of described ratchet is provided with and the external toothing that supports transmission component and match, ratchet can be around the pivot perpendicular to described swing component place plane along first direction or second direction rotation under the drive of swing component, in the time that described ratchet rotates along first direction, ratchet can insert hook tooth to promote ratchet rotating in same direction; In the time that described ratchet rotates along second direction, ratchet streaks on ratchet, and ratchet stops operating.
6. electric wrench according to claim 3, it is characterized in that: described ratchet mechanism comprises eccentric shaft, swing component, ratchet and ratchet, described eccentric shaft is articulated on described support housing, and eccentric shaft joins by the output shaft of reducing gear and power part; Described ratchet is articulated on described swing component, on the inner ring of described ratchet, be provided with the hook tooth with click-fit, the outer ring of described ratchet is also provided with and the external toothing that supports transmission component and match, ratchet can be around the pivot perpendicular to described swing component place plane along first direction or second direction rotation under the drive of swing component, in the time that described ratchet rotates along first direction, ratchet just inserts hook tooth to promote ratchet rotating in same direction; In the time that described ratchet rotates along second direction, ratchet streaks on ratchet, and ratchet stops operating.
7. electric wrench according to claim 6, it is characterized in that: described power part comprises motor and the power supply to motor power supply, 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 support housing, planetary gear rotation under the drive of central gear, and the output shaft revolution around motor along ring gear; The corresponding planet pin that is fixedly installed protrusion on planet carrier, planetary gear is sleeved on planet pin and can rotates relative to planet pin, and described planet carrier is connected with eccentric shaft spline.
8. according to the electric wrench described in claim 5 or 6, it is characterized in that: described ratchet mechanism 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 symmetrically arranged the 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, so that described group turned round and can drive rotating shaft to rotate to change elastic parts to support position on ratchet, thereby realize commutation function.
9. electric wrench according to claim 8, it is characterized in that: described elastic parts comprises stage clip and hollow pins, in described rotating shaft, be provided with putting hole, 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.
10. electric wrench according to claim 8, it is characterized in that: described swing component comprises the over cap that swings body and coordinate with swing body, 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 arranges with shaft hole is concentric, on described swing body and over cap, be all relatively set with pilot hole, be contained in pilot hole described swing body and over cap are fixedly connected with by screw, described rotating shaft through the shaft hole of described swing body and over cap so that swing body and over cap can rotate by phase countershaft, described rotating shaft two end supports is on support housing and can rotate relative to support housing.
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 near in a side of another parts; wherein shaft hole is arranged on the center of round boss; described pilot hole is arranged on round boss; on round boss, be also provided with the pivot hole that ratchet is installed 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, two drives are symmetrical centered by axis, each drive both sides are intermeshing 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, is characterized in that: described drive division is inner sleeve structure.
14. 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 drive part and circuit board, wherein main switch, reset switch are oppositely arranged on the both sides, grip part of housing, described switch drive part is arranged between main switch and reset switch, is provided with the control circuit for controlling electric machine rotation on circuit board.
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 |
|---|---|---|---|
| CN201210590614.0 | 2012-12-29 | ||
| CN2012207459857 | 2012-12-29 | ||
| CN201210590614 | 2012-12-29 | ||
| CN2012105906140 | 2012-12-29 | ||
| CN201220745985.7 | 2012-12-29 | ||
| CN201220745985 | 2012-12-29 | ||
| CN201310065014.7A CN103909491B (en) | 2012-12-29 | 2013-02-28 | Electric wrench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909491A true CN103909491A (en) | 2014-07-09 |
| CN103909491B 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103909491B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN111185873A (en) * | 2020-03-17 | 2020-05-22 | 北渤智能科技秦皇岛有限公司 | Open type electric wrench for connecting reinforcing steel bar and sleeve |
| CN112959255A (en) * | 2021-02-23 | 2021-06-15 | 王田田 | Electric wrench |
| CN112975815A (en) * | 2021-03-24 | 2021-06-18 | 国网安徽省电力有限公司电力科学研究院 | Electric ratchet wrench |
| CN114516007A (en) * | 2022-03-14 | 2022-05-20 | 奇瑞商用车（安徽）有限公司 | Return device and open ratchet spanner |
Families Citing this family (4)
| 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 |
| 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 |
| CN113400232A (en) * | 2021-06-22 | 2021-09-17 | 江苏科技大学 | Detection device for electromechanical equipment based on ship |
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- 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
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| JPH11138457A (en) * | 1997-11-10 | 1999-05-25 | Honda Motor Co Ltd | Nut fastening device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN111185873A (en) * | 2020-03-17 | 2020-05-22 | 北渤智能科技秦皇岛有限公司 | Open type electric wrench for connecting reinforcing steel bar and sleeve |
| CN112959255A (en) * | 2021-02-23 | 2021-06-15 | 王田田 | Electric wrench |
| CN112959255B (en) * | 2021-02-23 | 2022-12-20 | 王田田 | Electric wrench |
| CN112975815A (en) * | 2021-03-24 | 2021-06-18 | 国网安徽省电力有限公司电力科学研究院 | Electric ratchet 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 |
| CN114516007A (en) * | 2022-03-14 | 2022-05-20 | 奇瑞商用车（安徽）有限公司 | Return device and open ratchet spanner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103909491B (en) | 2016-08-03 |
| CN203141398U (en) | 2013-08-21 |
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