CN2485482Y

CN2485482Y - Gapless transmission

Info

Publication number: CN2485482Y
Application number: CN 01222966
Authority: CN
Inventors: 林祚国
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-30
Filing date: 2001-04-30
Publication date: 2002-04-10
Anticipated expiration: 2011-04-30

Abstract

The utility model discloses a gapless transmission. A transmission error is prone to be made due to a gap which arises when the prior transmission gear is switching from a positive side to a passive side or the versa. The utility model adopts two sets of gears which mesh to a common drive gear. When a drive shaft rotates in a positive direction, the power in the positive side of a drive shaft activates the first set of gears to conduct actual transmission and when the drive shaft rotates in a passive direction, the power in the passive side of the drive shaft activates the second set of gears to conduct transmission so that no gap is produced in transmission.

Description

No back clearance transmission device

The utility model relates to a kind of no back clearance transmission device, refers to especially a kind ofly utilize two groups of gears not close in positive and negative flank of tooth side, uses the back clearance phenomenon person when eliminating gear transmission.

By the creation that is used for eliminating the transmission back clearance at present, wherein as No. 221832 " double-acting dynamic back clearance-eliminating driving system " patent of invention of Announcement Number case of Taiwan patent, it promptly is the design of commonly seeing that the typical case eliminates back clearance, this invention mainly is to utilize a former moving worm screw, and one displacement amount control worm and wheel engagement, utilize former moving worm screw perseverance to force in the active force of worm gear by this, make this displacement amount control the worm screw perseverance by the reverse worm gear that is packed in, because the irreversible conduction of worm gear, therefore make to present no gap-like between worm gear and worm screw, reach the effect of eliminating back clearance by this.

Yet this kind eliminated the transmission design of back clearance, though can reach the function of eliminating the transmission back clearance, yet this kind structural design only is suitable for exerting oneself and inputting shaft is on worm screw that 90 degree intersect and the worm gear and uses, if go out, inputting shaft is coaxial and space when narrow and small, then this kind back clearance is eliminated system and can't be suitable for.

In view of this inventor is to think deeply research, creates a kind of transmission device that does not have back clearance eventually.

Therefore, the utility model main purpose provides a kind of no back clearance transmission device that can effectively remove back clearance between gear.

Another purpose of the present utility model is the no back clearance transmission device for providing a kind of installing not take up space.

In order to achieve the above object, the utility model proposes a kind of no back clearance transmission device, it mainly is provided with the inputting shaft of a connection power source, the end in addition of inputting shaft forms one and goes into powershift gear, go into the both sides of powershift gear and mesh a free gear and a fixed gear, the bottom surface of this free gear is that spiral shell is established a cover panel, this cover panel is concentrically ringed relative swing with free gear, this free gear and fixed gear are positioned at the both sides into powershift gear, with opposite sense of rotation with go into powershift gear and form really engagement by subsides, and free gear and fixed gear each downward coaxial interlock first equipment gear and second equipment gear, and make first, between two equipment gears, be provided with one respectively with first, two equipment gears form the powershift gear that of engagement, this first equipment gear forms by pasting engagement with the sense of rotation of going into powershift gear in contrast to free gear by subsides and the gear of exerting oneself, and second equipment gear also forms by pasting engagement with the sense of rotation of going into powershift gear in contrast to fixed gear by subsides and the gear of exerting oneself again.

Advantageously, this cover panel is the plate body that forms a circle, and make this free gear towards the side of overlapping panel, be arranged with one and just can and be the circular caulking groove that is slidingly matched for the embedding of cover panel, this cover panel can be the rotation of concentric in the caulking groove of free gear, the end face of this free gear, be equipped with two adjustment holes that match and distribute with the concentric circle arcuation, this cover panel is adjusted hole site and is worn a screw with respect to each, makes free gear be able to retaining screw and passes the adjustment hole of free gear and be screwed in the screw of cover panel and form the location.

Advantageously, the central authorities of this free gear have a perforation, this cover panel wears a croze hole with respect to the punch position of free gear, the rotating shaft that croze hole can supply a surface to have the croze distribution wears affixed, the top of this rotating shaft and the pivot perforation of passing free gear again, on the top end of this rotating shaft, cut open and establish the groove of pulling that can supply word head of screwdriver embedding together, and the end in addition of rotating shaft connects first equipment gear, affixed again another rotating shaft in the bottom surface of fixed gear again, the end in addition of rotating shaft connects second equipment gear.

Advantageously, this is gone into powershift gear, free gear, fixed gear, first and second equipment gear and goes out powershift gear, all be contained in the containing groove of a pedestal, separate into upper and lower containing space by a space-stop rack in this containing groove, and the rotating shaft of free gear and fixed gear is respectively passed a bearing and is hubbed on the space bar and forms the location.

Based on above-mentioned content, the utility model can obtain following advantage:

1. effectively remove the back clearance phenomenon between gear.

2. installing does not take up space.

For can be further more detail knowledge feature of the present utility model and other purpose, existing attachedly describe in detail as the back with icon: Fig. 1 is the perspective exploded view of the utility model preferred embodiment.Fig. 2 is the longitudinal profile schematic representation of the utility model preferred embodiment.Fig. 3 is that the utility model is adjusted first and second equipment gear and the view of the gear clearance of exerting oneself.Fig. 4 is that the utility model is adjusted fixed gear and the view of going into the powershift gear gap.Fig. 5 is that the utility model is adjusted free gear and the view of going into the powershift gear gap.Fig. 6 is that the utility model is gone into the view that powershift gear is just changeing the transmission free gear.Fig. 7 is that the utility model is gone into powershift gear first equipment gear and the drive state schematic representation that goes out powershift gear when just changeing.Fig. 8 is the view that the utility model is gone into powershift gear counter-rotating transmission free gear.Fig. 9 is that the utility model is gone into powershift gear when counter-rotating second equipment gear and the drive state schematic representation that goes out powershift gear.

At first please cooperate referring to Fig. 1, shown in Fig. 2, the utility model tool one pedestal 10, these pedestal 10 end faces form a containing groove 11, separate by a space-stop rack 12 in this containing groove 11, following containing space, wherein the central authorities of this space-stop rack 12 are with the bearing inputting shaft 20 that is pivoted, the end in addition of this inputting shaft 20 connects rotating power source, inputting shaft 20 is gone into powershift gear 21 near the end formation one of space-stop rack 12, this goes into the both sides of powershift gear 21 again, be respectively equipped with a free gear 30 and fixed gear 40 and go into powershift gear 21 formation engagements, the bottom surface of this free gear 30 is arranged with a circular caulking groove 31, the central authorities of free gear 30 have a perforation 32, and the end face of free gear 30, being equipped with two again 32 is center and the adjustment hole 33 that is circular-arc distribution to bore a hole relatively:

The circular caulking groove 31 of these free gear 30 bottom surfaces, can embed for a discoideus cover panel 34, and the circular caulking groove 31 that makes cover external diameter of panel 34 and free gear 30 is and is slidingly matched, cover panel 34 is adjusted 33 positions, hole with respect to two of free gear 30 and is respectively worn a screw 341, make free gear 30 tops pass the adjustment hole 33 of free gear 30 with retaining screw 330 and be screwed in the cover panel 34 screw 341 in, with free gear 30 be fixed at the cover panel 34 on;

This cover panel 34 is provided with a croze hole 340 with respect to perforation 32 positions of free gear 30 again, first rotating shaft 50 that this croze hole 340 can supply a surface to have the croze distribution wears affixed, the top pivot of this first rotating shaft 50 passes the perforation 32 of free gear 30, and cuts open on the end face of this end and establish together and can pull groove 500 for what a word bottle opener end embedded; In addition, affixed second rotating shaft 60 of the bottom surface of this fixed gear 40 central authorities, second rotating shaft 60 of first rotating shaft 50 of this free gear 30 and fixed gear 40 is end in addition, all passes and is hubbed at (as shown in Figure 2) on the space bar 12 with bearing;

This pedestal 10 is at the central authorities of containing groove 11 force-output shaft 70 that is pivoted again, the top of this force-output shaft 70 forms one and goes out powershift gear 71 in containing groove 11, the end in addition that force-output shaft 70 differs from out powershift gear 71 then stretches out outside the pedestal 10, use driving force is exported, the end of space bar 12 is passed in this first rotating shaft 50 and second rotating shaft 60 again, respectively be hubbed at pedestal 10 containing grooves 11 and be positioned at the both sides of force-output shaft 70, this first rotating shaft 50 and second rotating shaft 60 be with respect to the position that goes out powershift gear 71, each form one can with go out first equipment gear 51 and second equipment gear 61 that powershift gear 71 is meshed.

Please cooperate again referring to Fig. 2,3,4 and shown in Figure 5, it is essential when wherein the utility model is implemented earlier through suitable adjustment, make free gear 30, fixed gear 40 and go into the gaps that 21 of powershift gears are removed counterturn, and first and

second equipment gear

51,61 and go out 71 of powershift gears, then eliminate the gap towards identical turning to, can make the utility model carry out forward and backward when replacing by this, can reach the effect of not having the back clearance influence fully;

As Fig. 2, shown in Fig. 3, when the utility model will be adjusted, earlier the retaining screw on the free gear 30 330 is loosened, utilize a word end of a word bottle opener to insert first rotating shaft 50 be positioned at free gear 30 central authorities again and pull groove 500, use a word bottle opener first rotating shaft 50 is rotated counterclockwise (shown in the arrow on Fig. 3 right side) together with the cover panel 30 and first equipment gear 51, make first equipment gear 51 except being rotated counterclockwise the closing elimination gap towards going out powershift gear 71, more can drive out powershift gear 71 together slightly is and turns clockwise, and use powershift gear 71 and drive second equipment gear 61 more also slightly to change pendulum counterclockwise, second equipment gear 61 is formed relatively towards going out the state that powershift gear 71 is clockwise direction rotation closing; Make at last and the moving together fixed gear 40 of second equipment gear 61, along with second equipment gear 61 rotates in a counter-clockwise direction (as shown in Figure 4), and make fixed gear 40 form with counterclockwise with go into powershift gear 21 by pasting the state that meshes (as the imaginary line of Fig. 4 and shown in Figure 6);

Ensuing adjustment, then the operator is embedded at and pulls in the groove 500 to support on the other hand a word bottle opener, and utilize a word bottle opener to locate first rotating shaft 50 not influenced and deflection by external force, change free gear 30 by another hand adjustment again this moment and be clockwise concentric circle rotation along cover panel 34, and make free gear 30 to clockwise rotate direction and to go into powershift gear 21 and form by pasting and mesh (as the imaginary line of Fig. 5 and shown in Figure 6), last again with 330 lockings of the retaining screw on the free gear 30, free gear 30 is locked on the cover panel 34 really, promptly finishes the adjustment of the no back clearance drive state of the utility model the best with this.

Be with, the utility model when implementing (as Fig. 6, shown in Figure 7), when the power of power source drives into powershift gear 21 formation clockwise directions rotations, go into powershift gear 21 and drive free gear 30 formation transmissions (as shown in Figure 6) counterclockwise, and first equipment gear 51 also is rotation (as shown in Figure 7) counterclockwise synchronously with free gear 30, and drive out powershift gear 71 and be clockwise direction rotation, can make the power of being imported into powershift gear 71 by this, be able to via free gear 30, first equipment gear 51 drives to out powershift gear 71 and exports really in gapless gearing down mode.

In addition, and for example the 8th, shown in nine figure, when the power of inputting shaft 20 of the present utility model is transformed to when being rotated counterclockwise by above-mentioned clockwise direction suddenly, then of the present utility modelly go into powershift gear 21 and form rotation (as shown in Figure 8) counterclockwise along with the power of inputting shaft 20, going into powershift gear 21 this moment is directly to be clockwise direction rotation (as shown in Figure 8) for fixed gear 40 transmission of power, drive out synchronously powershift gear 21 by fixed gear 40 again and be rotation output counterclockwise, reach the utility model no matter with clockwise with this, mode counterclockwise or both alternations is come transmission, all have effectively and do not have the transmission quality of back clearance phenomenon, reach the splendid effect that gear transmission does not have back clearance; In addition, what is worth mentioning, the utility model utilizes gear train to be meshing with each other and the mode of movable adjustment, the back clearance phenomenon that exists easily in the time of not only can effectively removing the transmission of gear forward and backward, compared to the design of commonly using two worm gears, worm screw removal back clearance, the utility model has more that to implement the space little, and makes inputting shaft 21 and the force-output shaft 71 can be in same advantage on axially.

In sum, design of the present utility model can effectively improve the variety of problems and the shortcoming of producing on the prior art really, files an application in accordance with the law, please give approval.

Claims

1. no back clearance transmission device, it is characterized in that: the inputting shaft that mainly is provided with a connection power source, the end in addition of inputting shaft forms one and goes into powershift gear, go into the both sides of powershift gear and mesh a free gear and a fixed gear, the bottom surface spiral shell of this free gear is established a cover panel, this cover panel is concentrically ringed relative swing with free gear, this free gear and fixed gear are positioned at the both sides into powershift gear, with opposite rotation universal with go into powershift gear and form really engagement by subsides, and free gear and fixed gear each downward coaxial interlock first equipment gear and second equipment gear, and make first, between two equipment gears, be provided with one respectively with first, two equipment gears form the powershift gear that of engagement, this first equipment gear forms by pasting engagement with the sense of rotation of going into powershift gear in contrast to free gear by subsides and the gear of exerting oneself, and second equipment gear also forms by pasting engagement with the sense of rotation of going into powershift gear in contrast to fixed gear by subsides and the gear of exerting oneself again.

2. no back clearance transmission device as claimed in claim 1, it is characterized in that: wherein this cover panel forms the plate body of a circle, and make this free gear towards the side of overlapping panel, be arranged with one and just can and be the circular caulking groove that is slidingly matched for the embedding of cover panel, this cover panel can be the rotation of concentric in the caulking groove of free gear, the end face of this free gear, be equipped with two adjustment holes that match and distribute with the concentric circle arcuation, this cover panel is adjusted hole site and is worn a screw with respect to each, makes free gear be able to retaining screw and passes the adjustment hole of free gear and be screwed in the screw of cover panel and form the location.

3. no back clearance transmission device as claimed in claim 1, it is characterized in that: wherein the central authorities of this free gear have a perforation, this cover panel wears a croze hole with respect to the punch position of free gear, the rotating shaft that croze hole can supply a surface to have the croze distribution wears affixed, the top of this rotating shaft and the pivot perforation of passing free gear again, on the top end of this rotating shaft, cut open and establish the groove of pulling that can supply word head of screwdriver embedding together, and the end in addition of rotating shaft connects first equipment gear, affixed again another rotating shaft in the bottom surface of fixed gear again, the end in addition of rotating shaft connects second equipment gear.

4. no back clearance transmission device as claimed in claim 3, it is characterized in that: wherein this is gone into powershift gear, free gear, fixed gear, first and second equipment gear and goes out powershift gear, all be contained in the containing groove of a pedestal, separate into upper and lower containing space by a space-stop rack in this containing groove, and the rotating shaft of free gear and fixed gear is respectively passed a bearing and is hubbed on the space bar and forms the location.