CN105082036B

CN105082036B - A kind of gear drives screwdriver

Info

Publication number: CN105082036B
Application number: CN201510523004.2A
Authority: CN
Inventors: 洪超
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-08-24
Filing date: 2015-08-24
Publication date: 2017-07-28
Anticipated expiration: 2035-08-24
Also published as: CN105082036A

Abstract

Screwdriver is driven the invention discloses a kind of gear, it includes handle and knife bar, drive gear, positive gear are provided with the handle；The drive gear and the same gear shaft of positive gear are fixed, and described knife bar upper end is provided with a knife bar drive gear, and described knife bar drive gear can be engaged with positive gear to be rotated with trigger shaft.Relative to prior art, gear driving screwdriver of the present invention uses the structure of gear trigger shaft, when working space is narrow and small, and operation is laborsaving convenience safety again.

Description

A kind of gear drives screwdriver

Technical field

The present invention relates to a kind of common tool, more particularly to a kind of gear driving screwdriver.

Background technology

Screwdriver is the fastened by screw and removal tool that people commonly use, but existing conventional screwdriver structure is more single One, when operation narrow space, turn handle with fasten or removal screw operation it is not only laborious, it has not been convenient to, misoperation is also held Easy scratch hand.Meanwhile, conventional screwdriver can only on knife bar the shape such as the word of docking one, cross, hexagonal cutter head, function It is relatively simple.

The content of the invention

It is an object of the invention to overcome shortcoming and deficiency of the prior art, there is provided a kind of efficient, laborsaving, safe, work Make the various gear driving screwdriver of mode.

The present invention is achieved by the following technical solutions：A kind of gear drives screwdriver, including handle and knife bar.At this Drive gear and positive gear are provided with handle, the drive gear and the positive same gear shaft of gear are fixed, described knife Bar upper end is provided with a knife bar drive gear, and described knife bar drive gear can engage to drive the knife bar to revolve with the positive gear Turn.

Relative to prior art, gear driving screwdriver of the present invention uses the structure of gear trigger shaft, in working space When narrow and small, operation is laborsaving convenience safety again.

Further, described gear driving screwdriver, in addition to one be arranged on reverse gear in handle.The reverse gear Fixed with the positive same gear shaft of gear, and be located at the left and right sides of the knife bar drive gear, the gear axial direction respectively Movable transverse is erected on handle, and can be moved left and right on handle so that the positive gear or reverse gear respectively with knife bar The knife bar drive gear engagement of upper end.

Further, described gear driving screwdriver, an in addition to rack.The rack is longitudinally disposed, its sawtooth and institute State the engagement of drive gear.

Further, described gear driving screwdriver, in addition to the push rod and one first spring laterally set.The tooth The upper end of bar connects the push rod, and lower end connects first spring, and first spring is fixed on handle, and the push rod is horizontal To outside stretching handle, and it can be slided up and down on handle.

Further, described gear driving screwdriver, an in addition to brake block, a brake baffle and a second spring；Institute The sawtooth height that braking block length is more than the drive gear is stated, its inner end puts in and is adjacent to the sawtooth in the drive gear Recess；The brake baffle is adjacent to the outer end of the brake block and is fixed on the handle；The one of the second spring End is connected with the outer end of the brake block, and the other end is fixed on the handle.

Further, the bottom of the knife bar is provided with separable cutter head.Only the cutter head more need to be changed into drill bit can Drilled with substituting conventional hand drill, function is more various.

Further, a groove is provided with the handle, the groove crosses the handle side, and the push rod can be described Slided up and down in groove.

In order to be able to the apparent understanding present invention, the preferably embodiment party of the present invention is illustrated below with reference to brief description of the drawings Formula.

Brief description of the drawings

Fig. 1 is the schematic perspective view that gear of the present invention drives screwdriver.

Fig. 2 is the structural representation of handle in Fig. 1.

Fig. 3 is the braking principle schematic diagram of drive gear in Fig. 2.

Embodiment

Please refer to Fig. 1, Fig. 2 and Fig. 3, wherein, Fig. 1 is the schematic perspective view that gear of the present invention drives screwdriver, Fig. 2 It is the structural representation of handle in Fig. 1, Fig. 3 is the braking principle schematic diagram of drive gear in Fig. 2.

Invention gear driving screwdriver includes knife bar 10 and handle 20.The knife bar 10 is longitudinally disposed and one end stretches into this In hollow handle 20.

A knife bar drive gear 12 and a cutter head 14 are provided with the knife bar 10.The knife bar drive gear 12 is fixedly installed In the one end stretched into the handle 20 of the knife bar 10, the separable cutter head 14 is arranged on the other end of the knife bar 10.

A push rod 21 and a gear shaft 22 are provided with the handle 20.One is symmetrically provided with the side wall of the handle 20 to lead to Groove, the push rod 21 is horizontally through the groove, and its end is stretched out outside the handle 20, and the push rod 21 can be in described groove on Lower slider；The gear shaft 22 is arranged on the lower section of the push rod 21, and it is horizontally through the inner chamber of the handle 20, and the hand is stretched out in end Outside handle 20, the gear shaft 22 can be moved left and right with respect to the handle 20.

A driver element 23 and a brake unit 24 are provided with the inner chamber of the handle 20.The driver element 23 and braking Unit 24 is acted on respectively makes the knife bar 10 screwing screw clockwise, Unscrewed screw counterclockwise.

The driver element 23 includes the positive gear 232 of a drive gear 231, one, a reverse gear 233, a rack 234 With one first spring 235.The drive gear 231, positive gear 232 and reverse gear 233 are axle and solid with the gear shaft 22 It is scheduled on the gear shaft 22, the knife bar drive gear 12 is located between the positive gear 232 and the reverse gear 233.It is left Move right the gear shaft 22 and may be such that the knife bar of the positive gear 232 or reverse gear 233 respectively with the upper end of knife bar 10 drives Moving gear 12 is engaged.The rack 234 is longitudinally disposed and is engaged with the drive gear 231, and its one end is connected with the push rod 21, The other end is connected with first spring 235 being fixed on handle 20.

The brake unit 24 includes a brake block 241, a brake baffle 242 and a second spring 243.The brake block 241 length is more than the sawtooth height of the drive gear 231, and its inner end puts in the drive gear 231 and is adjacent in institute State the recess of the sawtooth of drive gear 231；The brake baffle 242 is adjacent to the outer end of the brake block 241 and is fixed on the hand On handle 20；The one end of the second spring 243 is connected with the outer end of the brake block 241, and the other end is fixed on the handle On 20.When drive gear 231 turns clockwise, the drive gear 231 takes the brake block 241 and quilt after the brake block 241 out of The elastic force of the second spring 243 rebounds and resetted, and will not hinder being rotated clockwise for the drive gear 231；The sliding tooth When taking turns 231 rotate counterclockwise, because the brake block 241 is stopped by the brake baffle 242, blocking the drive gear 231 can not be after Continuous rotation, so as to ensure that the drive gear 231 can only be rotated clockwise.

Application process of the gear driving screwdriver of the present invention in real work is as follows：

When needing to tighten screw, the gear shaft 22 is first stirred, the positive gear 232 is driven with the knife bar Moving gear 12 is engaged, and then lifts the push rod 21, and the push rod 21 is with carry-over bar 234, drive gear 231, the positive and of gear 232 Knife bar drive gear 12, so as to drive knife bar 10 to turn clockwise；When loosening push rod 21, the first spring 235 answers the rack 234 The brake baffle 242 has stopped brake block 241 simultaneously for position so that drive gear 231 is not forced and inverted counterclockwise, and then makes Obtaining knife bar 10 will not invert.The push rod 21 of lifting repeatedly can just make the knife bar 10 persistently turn clockwise, so as to tighten Screw.

When Unscrewed screw is needed, the gear shaft 22 is first stirred, the reverse gear 233 is driven with the knife bar Moving gear 12 is engaged, and then lifts the push rod 21, and the push rod 21 is with carry-over bar 234, drive gear 231, the and of reverse gear 233 Knife bar drive gear 12, so as to drive the rotate counterclockwise of knife bar 10；When loosening push rod 21, the first spring 235 answers the rack 234 The brake baffle 242 has stopped brake block 241 simultaneously for position so that drive gear 231 is not forced and inverted counterclockwise, and then makes Knife bar 10 will not be inverted, the lifting push rod 21 repeatedly can just make the knife bar 10 continue rotate counterclockwise, so as to loosen spiral shell Silk.

Relative to prior art, gear driving screwdriver of the present invention is using hand drive gear again by gear trigger shaft Structure, when working space is narrow and small, operation is laborsaving convenience safety again, and replacing cutter head can substitute drill bit and be drilled, and function is more Add sample.

The invention is not limited in above-mentioned embodiment, if the various changes or deformation to the present invention do not depart from the present invention Spirit and scope, if these are changed and deformation belongs within the scope of the claim and equivalent technologies of the present invention, then this hair It is bright to be also intended to comprising these changes and deform.

Claims

1. a kind of gear drives screwdriver, including handle and knife bar, it is characterised in that：Be provided with the handle drive gear, Positive gear；The drive gear and the same gear shaft of positive gear are fixed, and described knife bar upper end is provided with a knife bar Drive gear, described knife bar drive gear can be engaged with positive gear to be rotated with trigger shaft；It is additionally provided with the handle One brake unit, the brake unit includes a brake block, a brake baffle and a second spring；The braking block length is more than The sawtooth height of the drive gear, its inner end puts in and is adjacent to the recess in the sawtooth of the drive gear；The braking Baffle plate is adjacent to the outer end of the brake block and is fixed on the handle；The one end of the second spring and the brake block Outer end connection, the other end is fixed on the handle.

2. gear as claimed in claim 1 drives screwdriver, it is characterised in that：Also include a reverse tooth being arranged in handle Wheel, the reverse gear is fixed with the positive same gear shaft of gear, and is located at the left and right of the knife bar drive gear respectively Both sides, the gear shaft is laterally movable to be erected on handle, and can be moved left and right on handle, so that the positive gear or anti- Engaged respectively with the knife bar drive gear of knife bar upper end to gear.

3. the gear driving screwdriver as any one of claim 1 or 2, it is characterised in that：Also include a rack, it is described Rack is longitudinally disposed, the engagement of its sawtooth and the drive gear.

4. gear as claimed in claim 3 drives screwdriver, it is characterised in that：Also include a push rod laterally set and one the One spring, the upper end of the rack connects the push rod, and lower end connects first spring, and first spring is fixed on handle On, the push rod is crossed out outside handle, and can be slided up and down on handle.

5. gear as claimed in claim 4 drives screwdriver, it is characterised in that：The bottom of the knife bar is provided with separable Cutter head.

6. gear as claimed in claim 5 drives screwdriver, it is characterised in that：A groove is provided with the handle, it is described logical Groove crosses the handle side, and the push rod can be slided up and down in the groove.