CN207983223U - A kind of ratchet spanner - Google Patents

Abstract

A kind of ratchet spanner disclosed by the utility model, including handle, spanner head assembly, motor, power supply module and switch, spanner head assembly includes ratchet circle, rotary body and coupled ratchet, ratchet circle is rotatablely arranged in handle, rotary body is set in ratchet circle, and the end face of rotary body is provided with the export head for stretching out in handle outer, and the peripheral wall of rotary body is provided with mounting groove, coupled ratchet is articulated in mounting groove, and coupled ratchet is engaged with ratchet circle；Motor and power supply module are respectively arranged in handle, and the output shaft of motor is sequentially connected with transmission shaft by deceleration mechanism, and the output end of transmission shaft is provided with eccentric gearing component, linkage rack is provided on ratchet circle, and eccentric gearing component is incorporated in linkage rack.The utility model is simple and reasonable, integrates manually, electrically, and when use can manually, electrically be switched, easy to operate, effectively ensures that large torque exports, the scope of application is wider.

Description

A kind of ratchet spanner

Technical field

The utility model is related to spanner technical field, more particularly to a kind of ratchet spanner.

Background technology

Ratchet spanner is a kind of effective dismantling device of single direction rotation, is mainly used for the elastic operation of screw, application compared with To be universal, by big well known and common.Ratchet spanner generally has the diversified forms such as manually, electrically.Traditional manual ratchet wrench Hand, advantage are that torque is larger, but a disadvantage is that it is required to carry out manually when tightening or unscrewing, not only operation is laborious, but also It in the back segment process for unscrewing screw, is easy to be in loosening state because of screw, and causes screw that can not deviate from from screw hole, at this time It needs to be taken out screw with hand, causes use more inconvenient.

The electric ratchet wrench occurred on the market at present, such as one kind disclosed in Chinese patent literature CN2706281 are automatic Ratchet spanner, operation principle are provided in the motor in shell by driving bevel gear and bevel gear, drive linkage body（It is i.e. defeated Lift one's head）Rotation.The advantages of this electric ratchet wrench is easy to operate, laborsaving, but a disadvantage is that output torque is smaller, Wu Fashi For large-sized screw, and insufficient in battery capacity or when needing more large torque, can not manual force application operation, thus cause Using in the presence of compared with big limitation.

Utility model content

The purpose of this utility model is that it is in view of the drawbacks of the prior art and insufficient, a kind of ratchet spanner, structure are provided Advantages of simple integrates manually, electrically, and when use can manually, electrically be switched, easy to operate, effectively ensures big Torque exports, and the scope of application is wider.

To achieve the above object, the utility model uses following technical scheme.

A kind of ratchet spanner, including handle, spanner head assembly, motor, power supply module and switch, the motor and described are opened Power supply module described in Guan Junyu is electrically connected, and the spanner head assembly includes ratchet circle, rotary body and coupled ratchet, the ratchet circle It is rotatablely arranged in the handle, the rotary body is set in the ratchet circle, and the end face of the rotary body is provided with The export head of the handle outer is stretched out in, the peripheral wall of the rotary body is provided with mounting groove, and the coupled ratchet passes through installation Axis is articulated in the mounting groove, and the coupled ratchet is engaged with the ratchet circle, and the coupled ratchet drives the rotary body Rotation；The motor and the power supply module are respectively arranged in the handle, and the output shaft of the motor passes through deceleration mechanism It is sequentially connected with transmission shaft, the output end of the transmission shaft is provided with eccentric gearing component, linkage is provided on the ratchet circle Frame, the eccentric gearing component are incorporated in the linkage rack, and linkage rack described in the eccentric gearing Component driver is swung；It is described There is the tolerance clearance swung relative to the handle for the linkage rack between the outer wall of linkage rack and the inner wall of the handle, And the tolerance clearance is more than the wobble amplitude of the linkage rack.

Further, the both ends of the coupled ratchet are respectively arranged with the ratchet engaged with the ratchet circle, the installation The stop surface with the both ends counter stopper of the coupled ratchet is formed on the cell wall of slot, the front end of the handle is additionally provided with use Turn to turn round with what the ratchet circle engaged forward or backwards in controlling the coupled ratchet.

Further, the center of described turn of torsion is convexly equipped with newel, and the newel is inserted in the center of the rotary body In hole, it is radially equipped with post holes in the newel, is respectively arranged in the post holes and offsets cooperation with the coupled ratchet Ejector pin, offset the spring of cooperation with the ejector pin.

Further, the deceleration mechanism includes gear-box, ring gear, centre wheel, planetary gear and planet carrier, the gear Case is set to the output end of the motor, and the ring gear is fixed in the gear-box, the centre wheel and the motor Output shaft is fixedly connected, and the planet carrier is fixedly connected with the input terminal of the transmission shaft, and the planetary gear is installed on the row In carrier, the ring gear, the centre wheel are engaged with the planetary gear.

Further, the eccentric gearing component includes the eccentric shaft for being set to the transmission shaft output end, the bias The outside of axis is provided with spherical bearing, and the spherical bearing is inserted into the linkage rack.

Further, the power supply module, the motor and the transmission shaft are extremely before set in turn in the handle by rear It is interior.

The beneficial effects of the utility model are：Ratchet spanner provided by the utility model, integrate it is manual with it is electronic, when It needs to tighten screw（Especially large scale screw）When, manual mode operation may be used in user, in this operating process in handle Wall offsets with linkage rack, user's rotational handle, and linkage rack is acted on by handle, and ratchet circle is driven to rotate synchronously, and realizes spiral shell Silk tightens operation, improves the output torque of the utility model, it is ensured that the smooth installation of screw, and work as and need to unscrew screw When, electrically operated may be used in user, by motor via reducer structure, transmission shaft and eccentric gearing Component driver linkage rack It swings, so that ratchet circle is rotated relative to handle, not only rapid operation, conveniently, but also can ensure that screw smoothly takes off from screw hole Go out.In addition, being put relative to handle for linkage rack due to having between the outer wall of the linkage rack of the utility model and the inner wall of handle Dynamic tolerance clearance, and tolerance clearance is more than the wobble amplitude of linkage rack, but also the utility model in electric operating, links Frame will not touch handle inner wall so that and handle will not apply opposition by linkage rack to eccentric gearing component, to It avoids transmission shaft to be broken in position of output axle, extends service life.

Description of the drawings

Fig. 1 is the integral installation distribution structure schematic diagram of the utility model.

Fig. 2 is the integral installation distribution structure schematic diagram of the utility model.

Fig. 3 is the structural schematic diagram of the utility model spanner head assembly.

In Fig. 1-3：1, handle；2, ratchet circle；21, linkage rack；3, rotary body；31, export head；32, mounting groove；321, only Block face；33, centre bore；4, coupled ratchet；41, ratchet；42, curved surface is triggered；5, installation axle；6, turn to turn round；61, newel；62, column Hole；63, ejector pin；64, spring；7, motor；8, power supply module；9, it switchs；10, transmission shaft；111, gear-box；112, ring gear； 113, centre wheel；114, planetary gear；115, planet carrier；121, eccentric shaft；122, spherical bearing.

Specific implementation mode

The utility model will be further described below with reference to the accompanying drawings.

A kind of ratchet spanner as shown in Figure 1 to Figure 3, including handle 1, spanner head assembly, motor 7, power supply module 8 and open 9 are closed, motor 7 and switch 9 are electrically connected with power supply module 8.Spanner head assembly includes ratchet circle 2, rotary body 3 and coupled ratchet 4, Ratchet circle 2 is rotatablely arranged in handle 1, and rotary body 3 is set in ratchet circle 2, and the end face of rotary body 3, which is provided with, to be stretched out in The peripheral wall of export head 31 outside handle 1, rotary body 3 is provided with mounting groove 32, and coupled ratchet 4 is articulated with peace by installation axle 5 In tankage 32, coupled ratchet 4 is engaged with ratchet circle 2, the rotation of 4 driving rotating bodies 3 of coupled ratchet, and then drives 31 turns of export head It is dynamic, realize power output.

In the present embodiment, the both ends of coupled ratchet 4 are respectively arranged with the ratchet 41 engaged with ratchet circle 2, mounting groove 32 The stop surface 321 with the both ends counter stopper of coupled ratchet 4 is formed on cell wall, the front end of handle 1 is additionally provided with for controlling Coupled ratchet 4 turns torsion 6 with what ratchet circle 2 engaged forward or backwards.Preferably, the center for turning to turn round 6 is convexly equipped with newel 61, center Column 61 is inserted in the centre bore 33 of rotary body 3, and post holes 62 is radially equipped in newel 61, be respectively arranged in post holes 62 with Coupled ratchet 4 offset cooperation ejector pin 63, offset the spring 64 of cooperation with ejector pin 63.Specifically, mounting groove 32 is set in sector It sets, centre bore 33 is connected with mounting groove 32, the whole arc-shaped shape of coupled ratchet 4, the lateral surface of coupled ratchet 4（I.e. towards spine The side of wheel rim 2）Both ends be respectively arranged with ratchet 41, the medial surface of coupled ratchet 4（Side i.e. towards centre bore 33）'s Both ends are respectively formed with the triggering curved surface 42 for the cooperation that offsets with ejector pin 63.

During use, when rotate forward turn turn round 6 when, turn turn round 6 pass through ejector pin 63 push against coupled ratchet 4 corresponding triggering song Face 42 makes coupled ratchet 4 be rotated around installation axle 5 so that the ratchet 41 for being located at 4 one end of coupled ratchet is engaged with ratchet circle 2, is located at The ratchet 41 of 4 other end of coupled ratchet is detached from ratchet circle 2, and the end face of one end of separate the ratchet circle 2 of coupled ratchet 4 and The respective stopping face 321 of mounting groove 32 is inconsistent, that is, realizes the limit to coupled ratchet 4, at this point, ratchet circle 2 and coupled ratchet 4 In positive direction linkage, reversed slipping state, i.e., when ratchet circle 2 rotates forward, ratchet circle 2 can be driven by coupled ratchet 4 to be rotated Body 3 rotates, and when ratchet circle 2 rotates backward, it skids between ratchet circle 2 and coupled ratchet 4, rotary body 3 will not rotate, defeated Lift one's head 31 unpowered outputs.Similarly, when rotate backward turn to turn round 6 when, ratchet circle 2 and coupled ratchet 4 are just in reversed linkage, positive Slipping state.To realize the forward and reverse conjugate control for turning to turn round 6 pairs of coupled ratchets 4 and ratchet circle 2.

Motor 7 and power supply module 8 are respectively arranged in handle 1, and switch 9 is installed on the outer wall of handle 1, motor 7 it is defeated Shaft is sequentially connected with transmission shaft 10 by deceleration mechanism, it is preferable that in order to save installation space, power supply module 8, motor 7 and Transmission shaft 10 is extremely before set in turn in handle 1 by rear.

In the present embodiment, deceleration mechanism includes gear-box 111, ring gear 112, centre wheel 113, planetary gear 114 and planet Frame 115, gear-box 111 are set to the output end of motor 7, and ring gear 112 is fixed in gear-box 111, centre wheel 113 and motor 7 output shaft is fixedly connected, and planet carrier 115 is fixedly connected with the input terminal of transmission shaft 10, and planetary gear 114 is installed on planet carrier On 115, ring gear 112, centre wheel 113 are engaged with planetary gear 114, by using planetary gear speed reducing mechanism so that slowing effect More preferably, transmission effect is more stable, reliable.

The output end of transmission shaft 10 is provided with eccentric gearing component, and linkage rack 21, eccentric gearing group are provided on ratchet circle 2 Part is incorporated in linkage rack 21, and eccentric gearing Component driver linkage rack 21 is swung；The outer wall of linkage rack 21 and the inner wall of handle 1 it Between there is the tolerance clearance that is swung relative to handle 1 for linkage rack 21, and tolerance clearance is more than the wobble amplitude of linkage rack 21.This In embodiment, eccentric gearing component includes the eccentric shaft 121 for being set to 10 output end of transmission shaft, the external setting of eccentric shaft 121 There is spherical bearing 122, spherical bearing 122 to be inserted into linkage rack 21, by using spherical bearing 122 so that eccentric shaft 121 with Frictional resistance between linkage rack 21 is smaller, sensitivity higher.

Ratchet spanner provided by the utility model, integrate it is manual with it is electronic, when needing to tighten screw（Especially big ruler Very little screw）When, manual mode operation may be used in user, and 1 inner wall of handle offsets with linkage rack 21 in this operating process, and user borrows Assistant's handle 1 acts on linkage rack 21, and ratchet circle 2 is driven to rotate synchronously, and that realizes screw tightens operation, and it is new to improve this practicality The output torque of type, it is ensured that the smooth installation of screw, and when needing to unscrew screw, user may be used electronic mode and grasp Make, swung by deceleration mechanism, transmission shaft 10 and eccentric gearing Component driver linkage rack 21 by motor 7, make ratchet circle 2 relative to Handle 1 rotates, not only rapid operation, conveniently, but also can ensure that screw is smoothly deviate from from screw hole.In addition, due to this practicality There is the tolerance clearance swung relative to handle 1 for linkage rack 21 between the outer wall and the inner wall of handle 1 of novel linkage rack 21, And tolerance clearance is more than the wobble amplitude of linkage rack 21, but also the utility model, in electric operating, linkage rack 21 will not touch Encounter 1 inner wall of handle so that handle 1 will not apply opposition by linkage rack 21 to eccentric gearing component, to avoid Transmission shaft 10 is broken in position of output axle, extends service life.

The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.

Claims (6)

1. a kind of ratchet spanner, including handle, spanner head assembly, motor, power supply module and switch, the motor and the switch It is electrically connected with the power supply module, it is characterised in that：The spanner head assembly includes ratchet circle, rotary body and coupled ratchet, The ratchet circle is rotatablely arranged in the handle, and the rotary body is set in the ratchet circle, the rotary body End face is provided with the export head for stretching out in the handle outer, and the peripheral wall of the rotary body is provided with mounting groove, the linkage spine Pawl is articulated with by installation axle in the mounting groove, and the coupled ratchet is engaged with the ratchet circle, the coupled ratchet driving The rotary body rotation；The motor and the power supply module are respectively arranged in the handle, and the output shaft of the motor is logical It crosses deceleration mechanism driving and is connected with transmission shaft, the output end of the transmission shaft is provided with eccentric gearing component, on the ratchet circle It is provided with linkage rack, the eccentric gearing component is incorporated in the linkage rack, is linked described in the eccentric gearing Component driver Frame is swung；Have between the outer wall of the linkage rack and the inner wall of the handle and is swung relative to the handle for the linkage rack Tolerance clearance, and the tolerance clearance be more than the linkage rack wobble amplitude.

2. ratchet spanner according to claim 1, it is characterised in that：The both ends of the coupled ratchet are respectively arranged with and institute The ratchet of ratchet circle engagement is stated, the backstop with the both ends counter stopper of the coupled ratchet is formed on the cell wall of the mounting groove Face, the front end of the handle are additionally provided with turn engaged forward or backwards for controlling the coupled ratchet and the ratchet circle It turns round.

3. ratchet spanner according to claim 2, it is characterised in that：The center of described turn of torsion is convexly equipped with newel, described Newel is inserted in the centre bore of the rotary body, and post holes is radially equipped in the newel, is set respectively in the post holes Be equipped with the coupled ratchet offset cooperation ejector pin, offset the spring of cooperation with the ejector pin.

4. ratchet spanner according to claim 1, it is characterised in that：The deceleration mechanism include gear-box, ring gear, in Heart wheel, planetary gear and planet carrier, the gear-box are set to the output end of the motor, and the ring gear is fixed on the gear In case, the centre wheel is fixedly connected with the output shaft of the motor, and the input terminal of the planet carrier and the transmission shaft is fixed Connection, the planetary gear are installed on the planet carrier, and the ring gear, the centre wheel are engaged with the planetary gear.

5. ratchet spanner according to claim 1, it is characterised in that：The eccentric gearing component includes being set to the biography The outside of the eccentric shaft of moving axis output end, the eccentric shaft is provided with spherical bearing, and the spherical bearing is inserted into the linkage In frame.

6. ratchet spanner according to claim 1, it is characterised in that：The power supply module, the motor and the transmission Axis is extremely before set in turn in the handle by rear.