CN202878208U

CN202878208U - Impact ratchet wrench

Info

Publication number: CN202878208U
Application number: CN 201220313225
Authority: CN
Inventors: 陈亮
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2012-07-02
Filing date: 2012-07-02
Publication date: 2013-04-17
Anticipated expiration: 2022-07-02

Abstract

The utility model discloses an impact ratchet wrench which comprises an enclosure. The impact ratchet wrench further comprises a motor component, a transmission component, an impact component and a ratchet component, wherein the motor component, the transmission component, the impact component and the ratchet component are sequentially connected and arranged in the enclosure. The motor component is connected with the transmission component, the transmission component comprises a cylinder gear train, a first rotating speed or a second rotating speed is output through the transmission of gears in the gear train, and the second rotating speed is lower than the first rotating speed. The impact component comprises a striking part and an output part, and the striking part intermittently provides increased torque to the output part. The impact ratchet wrench provides large torque required by a locking bolt through an impact mechanism, and large locking force is provided; a ratchet structure arranged on the head portion of the impact ratchet wrench is small in size, and the impact ratchet wrench is suitable for being used under a plurality of working conditions; and a battery is used for power supply, and the impact ratchet wrench is small and exquisite in structure, light and portable, and suitable for being carried.

Description

Impact ratchet spanner

Technical field

The utility model relates to a kind of fastening class instrument, relates in particular to a kind of ratchet spanner.

Background technology

When the operation that securing member is tightened or loosened, often by means of some instruments such as manual ratchet spanner, pneumatic ratchet spanners etc., to alleviate manpower, to satisfy the torsion requirement.These ratchet spanneres all exist or use inconvenience, or torsion is less, or the shortcoming such as operating efficiency is not high, have affected its scope of application.

The utility model content

Technical problem to be solved in the utility model provides a kind of impact ratchet spanner, and it has the characteristics such as small and exquisite, light, that torsion is large, the scope of application is wide, can carry in field, basement or the various small space and use.

For solving the problems of the technologies described above, the utility model provides a kind of impact ratchet spanner, comprise casing, it is characterized in that, also comprise being located at electric machine assembly, transmission component, impact assembly, the ratchet assembly that connects successively in the casing, described electric machine assembly is connected with described transmission component, comprises the Cylinder Gear train in the described transmission component, export the first rotating speed or the second rotating speed by the gear drive in the described gear train, this second rotating speed is lower than described the first rotating speed; Described impact assembly comprises strike part and output, and described strike part intermittently provides the torque of increase to described output.

Comprise a swing component and support member in the described ratchet assembly, described support member is along with the swing of described swing component promotes the ratchet rotation.

Described ratchet assembly comprises a ratchet with the through hole that can hold the securing member workpiece, and described ratchet is driven swing component and then is rotated motion by described output.

Comprise the power train that the different number of teeth gears of two routes consist of in the described transmission component, the rotating speed of two-way power train output is respectively described the first rotating speed and the second rotating speed.

Comprise a motor gear that is connected with described electric machine assembly output shaft in the described transmission component, the gear in the described two-way power train all meshes with described motor gear, and exports described the first rotating speed or the second rotating speed.

Comprise an one-way clutch in the described transmission component, when described one-way clutch was in the lock state, described output shaft was exported the second rotating speed to described impact assembly; Described one-way clutch is in when surmounting state, and described output shaft is exported the first rotating speed to described impact assembly.

Also comprise an axle that is connected with described strike part, output in the described impact assembly, described axle is connected with described output shaft, and the rotating speed of exporting with described output shaft rotates.

Be provided with ordinatedly the projection that mutually stops on described strike part, the output faying face.

Comprising one on the described output is arranged on eccentric position and extends to the interior extension of described ratchet assembly.

Described impact ratchet spanner also includes the battery component that is connected with electric machine assembly and energy is provided for electric machine assembly.

The beneficial effect that the utility model reaches:

Compare with existing product, impact ratchet spanner of the present utility model, it utilizes beater mechanism to provide clamping screw necessary large torsion, and larger coupling mechanism force is provided; The ratchet structure size of head is little, is fit to more multi-state use, is powered by battery, and overall structure is small and exquisite, light, is suitable for carrying.

Description of drawings

Fig. 1 is impact ratchet spanner stereogram of the present utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the cutaway view of Fig. 2;

Fig. 4 is the exploded view of Fig. 1;

Fig. 5 is the ratchet assembly figure among Fig. 2;

Fig. 6 is the impact component drawings among Fig. 2;

Fig. 7 is the transmission component figure among Fig. 2.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.

Such as Fig. 1-shown in Figure 4, impact ratchet spanner of the present utility model comprises battery component 5A, electric machine assembly 4A, transmission component 3A, impacts assembly 2A, ratchet assembly 1A and accessory system (not shown).

The characteristics such as battery component 5A is comprised of common rechargeable battery, and 4A provides energy for electric machine assembly, and it has high-effect, and volume is little;

Electric machine assembly 4A is made of the DC motor, and it provides power for whole system;

Transmission component 3A is comprised of pitch wheel, and it can have the gearratio of switching function, the motor torsion is changed to operable torsion, as shown in Figure 7.Motor gear 44 is connected with motor output shaft among the electric machine assembly 4A, is rotated by driven by motor motor gear 44.Transmission component 3A middle gear adopts roller gear, formed by the gear of two pairs of different numbers of teeth, and be respectively the transmission of A road: " motor gear 44-gear 33-gear shaft 32-gear 29 "; The transmission of B road: " motor gear 44-gear 38-axle 37-gear 36-gear 42 ", its middle gear 36 is controlled on the axle 37 mobile by shift fork 30, and when stirring the position A of shift fork 30 to the axle 37, gear 36 is thrown off with axle 37.When stirring the position B of shift fork 30 to the axle 37, gear 36 is fixedly connected with by flat position with axle 37.The transmission of A road and the transmission of B road cross with axle 37 places at gear 36, by the disengagement mode, avoid interfering.

When stirring the position A of shift fork 30 to the axle 37, when gear 36 was thrown off with axle 37, machine was the low cruise state.Torsion transmits by the A road in the gear-box 20.Motor output shaft drive motor gear 44 among the electric machine assembly 4A rotates, motor gear 44 and gear 33 engaged transmission, and gear 33 driven gear axles 32 rotate gear shaft 32 and gear 29 engaged transmission.The one-way clutch that is comprised of output shaft 27, stop pin 28, gear 29, shell fragment 40 is in the lock state, and gear 42 and gear 36 engagements, gear 36 is thrown off with axle 37.At this moment, the output speed of output shaft 27 is the rotating speed of gear 29, and output shaft 27 is lower-speed state.

When stirring the position B of shift fork 30 to the axle 37, when gear 36 was connected with axle 37, machine was the high-speed cruising state.Torsion transmits by A and B two-way in the gear-box 20, but at gear 29 places, because A road rotating speed is lower than the B road, gear 29 rotating speeds are lower than gear 42, by the output speed of gear 42 and the output shaft engagement output speed greater than gear 29, therefore, the one-way clutch that is comprised of output shaft 27, stop pin 28, gear 29, shell fragment 40 is in and surmounts state, so this moment, the output speed of output shaft 27 was the rotating speed of gear 42, output shaft 27 is fast state.

Impact assembly 2A and comprise strike part and output, hit part intermittently provides torque from increase to output.In the present embodiment, hitting part is impact block 19, and output is used for 6 rotations of driving pawl assembly 1A ratchet as shown in Figure 6 for hitting axle 18.

Impact assembly 2A and utilized spring 24 accumulation of energy effects, the matrix track of oblique slot is arranged at axle 22, when extraneous torsion is set torsion greater than it, impact assembly 2A and start working, 1A provides impact torsion for ratchet assembly.Impact structure mainly is comprised of impact block 19, axle 22, steel ball 23, spring 24, bearing 26, axle 22, strike axle 18, sliding bearing 17 etc., by being connected of steel ball 23 and impact block 19, rolling friction is changed in sliding friction, and impact block 19 is supported by spring 24 compressions.Output shaft 27 among the transmission component 3A is supported by bearing 26, and the end of output shaft 27 is installed in the blind hole 221 of axle 22 1 ends, and therefore, output shaft 27 can be with moving axis 22 to rotate, and axle 22 is rotated with the rotating speed of output shaft 27 outputs.Spring 24 is enclosed within on the axle 22, and the one end is resisted against on the gear-box 20 by pad 25, and the other end is arranged in the groove 192 on impact block 19 outer walls.The other end of axle 22 passes impact block 19, and enters in the blind hole 181 of hitting axle 18 1 ends.

Two projections 191 are arranged on the impact block 19, cooperate with strike axle 18, also be provided with the step 182 of projection on the end face of strike axle 18 1 ends.Comprising one on strike axle 18 other end end faces is arranged on eccentric position and extends to the interior extension of ratchet assembly.Extension is a sliding bearing 17 in the present embodiment.

When extraneous torsion when setting working value, impact block 19 stops operating, be rotated further under the twisting force of axle 22 output shaft 27 outputs in gear-box 20, and because steel ball effect in the matrix track, impact block 19 rotatablely moves, and the projection 191 on the impact block 19 stops mutually with the step 182 that hits projection on the axle 18, in case being increased to, torsion hits axle 18 steps 182 disengagement impact blocks 19, under spring 24 elastic force effects, when impact block 19 accelerates, finish one-shot.

Ratchet assembly 1A can be converted into swing unidirectional reciprocating motion, thereby drives the accessory system motion.Ratchet is made of swing component 1, support member 2, swinging block lid 3, pin 4, spring 5,10, ratchet 6, pad 7,8, collar 9,14, steel ball 11, support shell 12, locking cover 13, sliding bearing 15, rubber sheet gasket 16 etc.Be provided with a through hole that can hold the securing member workpiece on the described ratchet 6, described securing member workpiece can comprise the securing members such as bolt, nut and the annex sleeve that can hold the securing members such as bolt, nut.Described ratchet 6 is driven swing component 1 and then is rotated motion by described output 18.As shown in Figure 5, sliding bearing 15 is placed in and hits the less other end of axle 18 diameters, be used for supporting and hit axle 18 other ends, and sliding bearing 15 contacts by rubber sheet gasket 16 end side surface larger with hitting axle 18 diameters.Support member 2 is installed on the swing component 1 by pin 4, spring 5 by swinging block lid 3.Support member 2 matches with ratchet 6 tooth on every side, and support member 2 can promote ratchet 6 when swinging along with swing component 1 and rotate.Swing component 1 comprises a U-shaped end 101, impacts in the U-shaped end 101, sliding bearing 17 lucky positions of hitting axle 18 connections among the assembly 2A.When hitting axle 18 rotation, the eccentric sliding bearing 17 that hits on the axle 18 that is arranged on contacts with two sidewalls of the U-shaped end 101 of swing component 1, and then driving swing component 1 formation swing, promotion ratchet 6 rotated and crosses a tooth when support member 2 swung one time along with swing component 1.Support shell 12 is enclosed within on the swing component 1, and U-shaped end 101 is arranged in the sleeve pipe 121 of support shell 12 1 ends.Locking cover 13 is placed in outside the sleeve pipe 121 of support shell 12 1 ends, and is blocked by collar 14 and to limit its motion and break away from.All comprise one on support shell 12, the swing component 1 and can hold ratchet 6 ring sets 122,102.Ratchet 6 by spring 10, steel ball 11 and pad 7,8 and collar 9 be fixed in the ring set 122,102 of support shell 12 and swing component 1.

During work, when hitting axle 18 rotation, hit under axle 18 drives in off-centre, swing component 1 beginning reciprocally swinging, support member 2 is rotatably connected with swing component 1, and at this moment, on positive veer, support member 2 promotion ratchets 6 travel forward; When swing component 1 moved backward, under spring 10 and associated components effect, ratchet 6 had certain frictional force, and at this moment, support member 2 is crossed a tooth of ratchet 6 under spring 5 effects, return to initial state, prepares to promote for the second time ratchet 6.Therefore, ratchet 6 forms continuous rotatablely moving.

In like manner, the machine another side turns to that the limit is opposite therewith, so can form the rotating of machine.

Accessory system is comprised of several different annexes, and it can be connected with final work package such as bolt, nut etc., thereby drives work package work.

The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection domain of the present utility model.

Claims

1. impact ratchet spanner, comprise casing, it is characterized in that, also comprise and be located at electric machine assembly, transmission component, impact assembly, the ratchet assembly that connects successively in the casing, described electric machine assembly is connected with described transmission component, comprise the Cylinder Gear train in the described transmission component, export the first rotating speed or the second rotating speed by the gear drive in the described gear train, this second rotating speed is lower than described the first rotating speed; Described impact assembly comprises strike part and output, and described strike part intermittently provides the torque of increase to described output.

2. impact ratchet spanner according to claim 1 is characterized in that, comprises a swing component and support member in the described ratchet assembly, and described support member is along with the swing of described swing component promotes the ratchet rotation.

3. impact ratchet spanner according to claim 2 is characterized in that, described ratchet assembly comprises a ratchet with the through hole that can hold the securing member workpiece, and described ratchet is driven swing component and then is rotated motion by described output.

4. according to claim 1 or 3 described impact ratchet spanneres, it is characterized in that, comprise the power train that the different number of teeth gears of two routes consist of in the described transmission component, the rotating speed of two-way power train output is respectively described the first rotating speed and the second rotating speed.

5. impact ratchet spanner according to claim 4, it is characterized in that, comprise a motor gear that is connected with the direct current generator output shaft in the described transmission component, the gear in the described two-way power train all meshes with described motor gear, and exports described the first rotating speed or the second rotating speed.

6. impact ratchet spanner according to claim 5 is characterized in that, comprises an one-way clutch in the described transmission component, and when described one-way clutch was in the lock state, described output shaft was exported the second rotating speed to described impact assembly; Described one-way clutch is in when surmounting state, and described output shaft is exported the first rotating speed to described impact assembly.

7. impact ratchet spanner according to claim 6 is characterized in that, also comprises an axle that is connected with described strike part, output in the described impact assembly, and described axle is connected with described output shaft, and the rotating speed of exporting with described output shaft rotates.

8. impact ratchet spanner according to claim 7 is characterized in that, is provided with ordinatedly the projection that mutually stops on described strike part, the output faying face.

9. impact ratchet spanner according to claim 8 is characterized in that, comprises one on the described output and is arranged on eccentric position and extends to the interior extension of described ratchet assembly.

10. impact ratchet spanner according to claim 1 is characterized in that, described impact ratchet spanner also includes the battery component that is connected with electric machine assembly and energy is provided for electric machine assembly.