CN202462319U

CN202462319U - Speedup structure of ratchet screwdriver

Info

Publication number: CN202462319U
Application number: CN2012200205402U
Authority: CN
Inventors: 陈昱纶
Original assignee: GONGFENG CO Ltd
Current assignee: GONGFENG CO Ltd
Priority date: 2012-01-17
Filing date: 2012-01-17
Publication date: 2012-10-03
Anticipated expiration: 2022-01-17

Abstract

The utility model relates to a speedup structure of a ratchet screwdriver. The speedup structure of the ratchet screwdriver is provided with a body. A first transmission bar penetrates into a ratchet carrier of the body and is provided with a ratchet. A shift block arranged on the ratchet carrier is used to control the ratchet to rotate positively, rotate reversely or stop. A casing is connected to a first end of the first transmission bar. A noncircular connecting part is arranged at a second end of the first transmission bar. A handle is combined to the body and is provided with a circular inner gear. The circular inner gear is meshed with a planetary gear set. The planetary gear set is meshed with a sun gear which is sleeved on a second transmission bar. The second transmission bar is provided with a socket part matching with the connecting part. As the first transmission bar and the second transmission bar are combined in a segmental manner, resistance generated when screw locking occurs due to defection in high-speed rotation is avoided.

Description

The speedup structure of ratchet screw

Technical field

The utility model is relevant for ratchet screw, particularly a kind of speedup structure of ratchet screw.

Background technology

At present general employed bottle opener structure has locking and the effect that unscrews though have to screw, can't effectively have location and speedup function concurrently, and lack operation ease in the use.

The rotational structure patent case of the accurate bottle opener that the TaiWan, China of therefore on May 21st, 2003 being announced just like the Christian era is novel No. 533956; Its exposure: include members such as Screwdriver handle, axle sleeve, bottle opener axostylus axostyle, axle change sheet, turn-button and pinion gear; Be to make Screwdriver handle moulding one hollow pipe shaft, the holder of tool circular space in top forms, all sides in this space and the moulding ring flank of tooth; And following pipe end plug is established an axle sleeve; The bottle opener axostylus axostyle then places Screwdriver handle and is provided with the bottle opener end in the afterbody of its axle sleeve that stretches through, and body of rod top establishes and be connected to a piece and gear mass and tool one protrudes out end, and is butted on a piece upside terrace edge with the axle change sheet cover of all tool axis holes of a ring; On holder, install pivotable turn-button in addition; Turn-button inner bottom part equidistance has at least three pinion gears from decide pivot mutually, these pinion gears place the said gear body with encircling between the flank of tooth bridle joint mutually, and the axle of pinion gear is placed through the axis hole of above-mentioned change sheet; And the axle center hole that is provided with tool ball in turn-button inner bottom part central authorities, supply the end that protrudes out of above-mentioned bottle opener axostylus axostyle to place; Use the turn-button at rotation top, then its pinion gear can be thereupon around moving and nibble and rotation along the ring flank of tooth, logical makes gear mass nibbled by pinion gear to hold drive and slow rotation, causes to make the bottle opener axostylus axostyle get rotating the action of making the turn screw to execute synchronously.

But case has disadvantage before this patent:

1, only has the speedup effect that central gear is constructed, can't make the setting operation of direction switching and positive motion location etc., aspect functional, show obviously deficiency.

2, lack the speedup process that detent mechanism caused, because operational reverse malfunction causes the efficient of speedup start to reduce, increase operational inconvenience easily.

For this reason; The applicant once improved application has the speedup of the Christian era novel M347252 number ratchet screw of TaiWan, China of announcing on December 21st, 2008 to rotate structure patent case; Its exposure: a kind of combination ratchet and central gear duplex; By the selection of ratchet mechanism with generation positive motion direction of operating, and by the rotating speed of central gear mechanism with increase output, to select the high and low rotating speed of output; Screw togather the locking of element and the demand that gets loose with correspondence, quick and convenience with the operation of reaching ratchet screw.

Said patent case is after using a period of time, and first end of its sleeve extension rod is provided with central gear, and is engaged between the plural planetary gear; Second end is provided with containing hole, for inserting screwdriver head, utilizes planetary gear engagement central gear and produces acceleration; Unscrew or the work of the screw of screwing for screwdriver head, start and feel because this sleeve extension rod is one-body molded processes, so its length is longer; When its first end is stressed, and when exporting the second end start to, be easy to generate deflection; Can produce resistance when causing the lock screw, damage fault even, so its result of use is not good.

The utility model content

The purpose of the utility model is to provide a kind of speedup structure of ratchet screw, and it can not produce deflection when high rotating speed, and can not cause generation resistance when locking screw.

For reaching above-mentioned purpose, the utility model solution is:

A kind of speedup structure of ratchet screw includes:

One body, it is provided with a pawl seat, and one first drive link has stretched through in the pawl seat; First drive link is provided with a ratchet; Pawl seat is provided with the slide block that a control ratchet just changes, reverses or stops, and first drive link is provided with first end and second end, and first termination is provided with a sleeve pipe;

One lever, it is incorporated into said body, is provided with a ring gear in the lever, and ring gear is engaged with a planet gear train, and planetary gearsets is engaged in a central gear jointly, and central gear is sheathed on one second drive link;

Second end of said first drive link is provided with a non-circular connecting portion, and said second drive link is provided with a socket part of matching with connecting portion.

Said connecting portion is established and is wavy for hexagonal, and it is wavy that the interior hexagonal that is for matching is then established in the socket part.

Establish in the said socket part into a ball is arranged, with said first drive link push up mutually to.

After adopting said structure, the utlity model has advantage:

1, the utility model utilizes this first drive link and second drive link to make up for segmented, therefore when its high rotating speed, can not produce deflection, produces resistance when locking screw and be unlikely to cause.

2, the utility model can supply according to the different working demand, and selects to use the high rotating speed (low torsion) or the slow-speed of revolution (high torsion), so quite convenient on using.

Description of drawings

Fig. 1 is the stereo appearance figure of the utility model;

Fig. 2 is the assembled sectional view of the utility model;

Fig. 3 is first drive link of the utility model and the three-dimensional exploded view of second drive link;

Fig. 4 is the B-B cutaway view among Fig. 1;

Fig. 5 is a C-C cutaway view among Fig. 1.

[main element symbol description]

1 body, 11 pawl seats

12 first drive links, 121 first ends

122 second ends, 13 ratchets

14 slide blocks, 15 sleeve pipes

16 connecting portions, 2 levers

21 ring gears, 22 planetary gearsets

23 central gears, 24 second drive links

25 socket parts, 26 balls

The A screwdriver head.

The specific embodiment

At first, see also Fig. 1 and shown in Figure 2, first embodiment of the utility model includes body 1 and lever 2, wherein:

Body 1, its front end are provided with a pawl seat 11, and one first drive link 12 has stretched through in this pawl seat 11; This first drive link 12 is provided with a ratchet 13, and is as shown in Figure 3, and this pawl seat 11 is provided with a slide block 14; Just changeing, reversing or stopping controlling this ratchet 13; This first drive link 12 is provided with first end 121 and second end 122 again, and this first end 121 is equipped with a sleeve pipe 15, for a fixing screwdriver head A; Second end 122 then is provided with a non-circular connecting portion 16, this connecting portion 16 establish be for hexagonal wavy.

Lever 2, it is incorporated into this body 1, and it is as shown in Figure 4 that the inwall of this lever 2 is provided with a ring gear 21; It is the B-B cutaway view among Fig. 1, and this ring gear 21 is engaged with a

planet gear train

22, and 22 of this planetary gearsets are engaged in a central gear 23 jointly again; This central gear 23 is sheathed on one second drive link 24; This second drive link 24 is provided with that a socket part 25 of matching with this connecting portion 16 is as shown in Figure 5, and it is the C-C cutaway view among Fig. 1, this socket part 25 establish be for interior hexagonal wavy; Establish in this socket part 25 again into a ball 26 is arranged, support and push up mutually with this first drive link 12.

During use, like Fig. 1 and shown in Figure 2, device one screwdriver head A in this sleeve pipe 15; When needs locking work, the initial stage needs the low torsion of high rotating speed, stirs the slide block 14 on this pawl seat 11 this moment earlier; Use and select this ratchet 13 just changeing or reverses, grip this lever 2 then, when rotation lever 2 as shown in Figure 4 just to transfer into rotating speed; Rotate lever 2 and can drive planetary gearsets 22 generation circular motion revolution simultaneously, because planetary gearsets 22 is engaged to the ring gear 21 of lever 2, thereby planetary gearsets 22 produces rotations; When planetary gearsets 22 time rotationals can transmission the central gear 23 of second drive link 24, and then make second drive link 24 just transferring out rotating speed, and then produce the speedup effect; That is lever 2 turns one circle, second drive link 24 can rotate many circles relatively, and this second drive link 24 then can see through its non-circular socket part 25; The connecting portion 16 of this first drive link 12 of interlock, and drive this first drive link, 12 rotations, control the just commentaries on classics or the reverse of these first drive links 12 again via this pawl seat 11; So, the work that the screwdriver head A in this sleeve pipe 15 then capable of using locks is when proceeding to locking work during the later stage; Then need the high torsion of the slow-speed of revolution, then stir the slide block 14 on this pawl seat 11, use and select this ratchet 13 to stop; So this first drive link 12 of 13 control of ratchet can't rotate, so, and when gripping these lever 2 rotations; 24 of then ring gears 21 in this lever 2 and can't mesh this planetary gearsets 22 transmission central gears 23 fast rotational, so this second drive link rotates with this lever 2 synchronously, equally through this socket part 25 and connecting portion 16; Related this first drive link 24 that makes rotates synchronously, then can produce the work that the high torsion of the slow-speed of revolution drives the screwdriver head A completion locking in this sleeve pipe 15; So, when work that needs unscrew, then must select the high torsion of the slow-speed of revolution, and when unscrewing latter stage, then must change and be chosen as the start that high rotating speed hangs down torsion, use cooperation different working demand in the initial stage that unscrews.

Only; The above is merely a wherein most preferred embodiment of the utility model; When the patent protection scope that can not limit the utility model with this; Such as the simple equivalent of doing according to the claim and the description of the utility model changes and replacement, all should still belong in the scope of the utility model protection that claim contains.

Claims

1. the speedup structure of a ratchet screw includes:

It is characterized in that: second end of said first drive link is provided with a non-circular connecting portion, and said second drive link is provided with a socket part of matching with connecting portion.

2. the speedup structure of ratchet screw as claimed in claim 1, it is characterized in that: said connecting portion is established and is wavy for hexagonal, and it is wavy that the interior hexagonal that is for matching is then established in the socket part.

3. according to claim 1 or claim 2 the speedup structure of ratchet screw is characterized in that: establish in the said socket part into a ball is arranged, with said first drive link push up mutually to.