CN1188866A - Double gear - Google Patents
Double gear Download PDFInfo
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- CN1188866A CN1188866A CN97126404A CN97126404A CN1188866A CN 1188866 A CN1188866 A CN 1188866A CN 97126404 A CN97126404 A CN 97126404A CN 97126404 A CN97126404 A CN 97126404A CN 1188866 A CN1188866 A CN 1188866A
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- gear
- gear teeth
- teeth
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- duplicate
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Abstract
The invention provides a duplicate gear, which comprises a first gear which is provided with a first group of gear teeth with a predetermined pitch and a second group of gear teeth with the pitch different from the pitch of the first group of gear teeth; a second gear which is provided with a plurality of gear teeth with the pitch equal to the pitch of the first group of gear teeth, and is joined with the first gear; a spring elastically compressing the first gear eccentrically in one way opposite to the second gear so that the first group of gear teeth of the first gear is of a predetermined offset from the gear teeth of the second gear. The offset between the second group of gear teeth of the first gear and the gear teeth of the second gear is less than the offset of the first group of the gear teeth of the first gear and the gear teeth of the second gear.
Description
The present invention relates to a kind of duplicate gear, wherein, a pair of gear stacks and combines and while and another gear engagement.
Be used in the middle of polytype gear of transferring power, duplicate gear is used for such device, wherein, need critically control one receive power member the position and prevent this member vibration.Duplicate gear especially can be used in the optical pickup units transfer device of disc player.An example of duplicate gear schematically is shown in Fig. 1.
As shown in Figure 1, duplicate gear 9 comprises first gear 1, second gear 2 and spring 3.First gear 1 has the gear teeth 1a that a plurality of tooth pitches are pre-constant pitch P.Second gear 2 has the gear teeth 2a that a plurality of tooth pitch P equate with the gear teeth 1a tooth pitch of first gear 1.Spring 3 is unidirectional and flexibly along opposite direction bias voltage first gear 1 and second gear 2, so that the predetermined distance that offsets between gear teeth 1a and the gear teeth 2a.
When duplicate gear 9 is connected in a small gear as shown in Figure 2, at least with first gear 1 insert on the second corresponding gear 2 among the gear teeth 1a among small gear 4 gear teeth 4a gear teeth 2a since the restoring force of spring 3 always contact with the gear teeth 4a of small gear 4.Because the gear teeth 4a of small gear 4 contacts with the gear teeth 1a of first gear 1 and the gear teeth 2a of second gear 2, so, the vibration of the duplicate gear 9 that the unexpected motion because of gear causes avoided effectively.Therefore, can critically control the position of duplicate gear.So, when one of the gear 1 of duplicate gear 9 and 2 when one combines such as the driven member (not shown) for the light sensation head of disc player, owing to prevented the vibration of driven member, so can critically control the position of driven member in the driven member motion or when stopping.
For duplicate gear 9 is combined with small gear 4, the gear teeth 4a of the gear teeth 1a of duplicate gear 9 or 2a and small gear 4 meshes.The predetermined distance owing to offset between the gear teeth 1a of first gear 1 and the gear teeth 2a of second gear 2, so, as shown in Figure 3, when duplicate gear 9 will combine with small gear 4 under such state, the incline section 1a ' of the most forward gear teeth of first gear 1 and the gear teeth 4a of small gear 4 interfered.Therefore, duplicate gear 9 can not correctly combine with small gear 4.So above-mentioned combination should be carried out under following state, that is, so that second gear 2 moves relative to first gear 1 first gear teeth 1a is alignd with second gear teeth 2a by pressing spring 3.In addition, when needs separate duplicate gear 9 to arrive disengaging configuration shown in Fig. 3 at any time with small gear 4 in the transferring power process since shown in the gear teeth 4a interference of incline section 1a ' and small gear 4, so can not be with duplicate gear 9 with conventional construction.
The purpose of this invention is to provide a kind of duplicate gear that improves structure that has, wherein, duplicate gear successfully combines with a pre-fixed gear, and in power transmission process, separates and combination with above-mentioned pre-fixed gear at any time.
For reaching this purpose, by the invention provides a kind of like this duplicate gear, it comprises: one first gear, and it has second group of gear teeth that first group of gear teeth that tooth pitch is a pre-constant pitch and tooth pitch are different from above-mentioned first group of gear teeth tooth pitch; One second gear, it has first group of gear teeth that gear teeth tooth pitch is identical on a plurality of tooth pitches and above-mentioned first gear, and combines with above-mentioned first gear; And a spring, it is used for above-mentioned first gear of the unidirectional fexible bias pressure of above-mentioned relatively second gear, so that the predetermined distance that offsets between the first group of gear teeth on above-mentioned first gear and the gear teeth on second gear.Wherein, the distance that is offsetted between the second group of gear teeth on first gear and the gear teeth on second gear is less than first group of gear teeth on first gear and the distance that the gear teeth offsetted on second gear.
The tooth pitch of second group of gear teeth on first gear preferably equates.
In addition, be subjected under the unidirectional fexible bias pressure state at above-mentioned relatively second gear of above-mentioned first gear, on the gear teeth in above-mentioned second group of gear teeth and second gear and the distance that is offsetted between the corresponding gear teeth of these gear teeth preferably less than on the gear teeth of more close above-mentioned first group of gear teeth in above-mentioned second group of gear teeth and second gear and the distance that is offsetted between the corresponding gear teeth of these gear teeth.
Be subjected under the unidirectional fexible bias pressure state at above-mentioned relatively second gear of above-mentioned first gear, first group of gear teeth of second group of gear teeth middle distance gear teeth farthest preferably are positioned on the gear teeth of second gear just.
By below in conjunction with the detailed description of accompanying drawing to the preferred embodiment of the present invention, above-mentioned purpose of the present invention and advantage can be more clear, in the accompanying drawing:
Fig. 1 is the schematic plan view of a traditional duplicate gear;
Fig. 2 is the schematic plan view that illustrates with the duplicate gear shown in Figure 1 of a pinion;
Fig. 3 is a schematic plan view, and the state that duplicate gear shown in Figure 2 combines with small gear is shown;
Fig. 4 is the perspective illustration by the duplicate gear of one embodiment of the invention;
Fig. 5 is the schematic plan view of duplicate gear shown in Figure 4;
Fig. 6 to Fig. 9 is a schematic plan view, and the state that duplicate gear shown in Figure 5 combines with small gear is shown; And
Figure 10 is the schematic plan view by the duplicate gear of another embodiment of the present invention.
As shown in Figure 4 and Figure 5, the duplicate gear 100 of the embodiment of the invention comprises first gear 10, second gear 20 and spring 30.
Side at first gear 10 is shaped on first group of gear teeth and second group of gear teeth.First group of gear teeth comprises many first gear teeth of arranging with pre-constant pitch P1 11.Second group of gear teeth comprises that five tooth pitches are second gear teeth of P2, and the tooth pitch P2 that tooth pitch P2 is different from tooth pitch P1 second gear teeth of first gear teeth 11 is the tooth pitch P1 that equates and be slightly larger than first gear teeth 11.Second gear 20 comprises the gear teeth 21, and the gear teeth 21 have the tooth pitch Pl that equates with the tooth pitch of first group of gear teeth.
As mentioned above, when the tooth pitch P2 with second group of gear teeth 12 makes when more bigger than the tooth pitch of first gear teeth 11, diminishing gradually between the gear teeth 21 of the second group of gear teeth 12 and second gear apart from d1, d2, d3 and d4 (see figure 5) and difference apart from d, and apart from the distance that is offset between the gear teeth 21 of d for the first group of gear teeth 11 under the state that is subjected to fexible bias pressure at first gear, 10 relative second gears 20 and second gear 20.
That is, as shown in Figure 5, first group of gear teeth 11 of the second group of gear teeth 12 middle distance farthest those second gear teeth and second gear on offsetted between the gear teeth corresponding to these second gear teeth far away on the distance that is offsetted between the gear teeth at this second gear teeth place gear teeth far away and second gear less than first group of gear teeth of second group of gear teeth, 12 middle distances 11 second apart from d1.Become big gradually apart from d1, d2, d3 and d4.The distance that is offsetted between less than the gear teeth on the first group of gear teeth 11 and second gear apart from d4 that is being offsetted between the gear teeth at this second gear teeth place on second gear teeth of the most close first gear teeth 11 and second gear in second group of gear teeth 12.Be subjected under the state of fexible bias pressure at first gear, 10 relative second gears 20, preferably on the gear teeth of second group of first group of gear teeth 11 of the gear teeth 12 middle distances gear teeth farthest gear teeth 21 of being arranged in second gear 20 just and the above-mentioned corresponding high order end of the gear teeth farthest.The duplicate gear 100 that will have this structure is illustrated with reference to Fig. 6 to 9 with the example that a small gear of being scheduled to combines.In Fig. 6 to 9, the second group of gear teeth 12 on first gear 10 and the gear teeth 21 on second gear have provided the reference character of each gear teeth for convenience of explanation.
When the duplicate gear 100 of present embodiment combines with small gear 4, by duplicate gear 100 position shown in the double dot dash line from Fig. 6 is moved to small gear 4 along direction shown in the arrow K, make on first gear 10 in second group of gear teeth 12 the top gear teeth 211 in the gear teeth 21 on the top gear teeth 121 and second gear 20 contact the gear teeth 4a of small gear 4.Under this state, when duplicate gear 100 continues when direction shown in the arrow K moves, small gear 4 rotations, be positioned at the gear teeth on the gear teeth 4b contact duplicate gear on gear teeth 4a the right, in view of small gear 4 is pressed direction shown in small gear 4 upward arrow C rotation, gear teeth 4b enter as shown in Figure 7 duplicate gear 100 the gear teeth 121 and 211 and the gear teeth 122 and 212 between.Therefore, duplicate gear 100 beginnings and small gear 4 engagements.At this moment, since on the gear teeth 121 on first gear 10 and second gear 20 with the corresponding gear teeth 211 of the gear teeth 121 between not offsetting, so, be different from traditional duplicate gear 9, the gear teeth 4a on the small gear without any the gear teeth 121 that enter duplicate gear 100 with interfering and 211 and the gear teeth 122 and 212 between.Along with duplicate gear 100 continues to move along direction shown in the arrow K, small gear 4 rotations.During small gear 4 rotation, the gear teeth 4c of small gear 4 enter duplicate gear the gear teeth 122 and 212 and the gear teeth 123 and 213 between, and be pressed against on the gear teeth 122 on first gear.Therefore, first gear 10 fexible bias pressure that overcomes spring 30 as shown in Figure 8 moves.So, on the gear teeth 123 in second gear teeth and second gear and the gear teeth 123 corresponding gear teeth 213 between the distance that offsetted reduce, institute's decrease is the distance that is offsetted between the gear teeth 122 and the gear teeth 212.Therefore, when duplicate gear 100 continues to move forward, the gear teeth 4d on the small gear 4 enter duplicate gear the gear teeth 123 and 213 and the gear teeth 124 and 214 between.Along with duplicate gear continues to move along direction shown in the arrow K, the gear teeth of small gear 4 progress between the gear teeth of duplicate gear by said process, thereby enter first group of gear teeth 11 as shown in Figure 9.So, on the first group of gear teeth 11 on the gear teeth of having realized small gear and first gear 10 and second gear 20 with the combining of the corresponding gear teeth of first gear teeth.
Therefore, owing to can as in traditional duplicate gear 9, using each gear 1 of hand and 2 to combine by duplicate gear 100 of the present invention with small gear 4 for duplicate gear is combined with small gear, so, can make things convenient for and promptly construct power transmitting deice.When duplicate gear needs to separate with small gear when arriving among Fig. 6 position shown in the double dot dash line, can use duplicate gear by present embodiment in the transferring power process.
In the above embodiment of the present invention, second group of gear teeth 12 of first gear 10 have five gear teeth.Yet the tooth number that second group of gear teeth 12 are had can be greater or less than five, and in addition, the tooth pitch P2 of above-mentioned second group of gear teeth 12 equates.Yet the tooth pitch of second group of gear teeth 12 also can be different.
In the duplicate gear 100 according to the foregoing description, the gear teeth 11,12 and 21 distribute along straight line.Yet the present invention is not limited only to the duplicate gear of tooth bar type.For example, as shown in figure 10, can be a fan-shaped duplicate gear 200, wherein, first gear teeth 51 on first gear 50 and second gear teeth 52 are placed adjacent to the gear teeth of second gear 60, and first gear, 50 relative second gears 60 are subjected to the fexible bias pressure of spring 30.
As mentioned above, in pressing duplicate gear of the present invention, because except being used for that transmission of power is given one group of gear teeth by a gear that is placed on a pair of gear that mutually combines on another, also have one group to be used for the gear teeth that combine with a pre-fixed gear, so a pre-fixed gear can anyly carry out manually with combining of small gear.Therefore, can be easily and promptly construct power transmitting deice.When duplicate gear needs to separate with small gear in the transferring power process at any time, can use by duplicate gear of the present invention.
Claims (4)
1. duplicate gear, it comprises:
One first gear, it has second group of gear teeth that first group of gear teeth that tooth pitch is a pre-constant pitch and tooth pitch are different from above-mentioned first group of gear teeth tooth pitch;
One second gear, it has first group of gear teeth that gear teeth tooth pitch is identical on a plurality of tooth pitches and above-mentioned first gear, and combines with above-mentioned first gear; And
A spring, it is used for above-mentioned first gear of the unidirectional fexible bias pressure of above-mentioned relatively second gear, so that the predetermined distance that offsets between the first group of gear teeth on above-mentioned first gear and the gear teeth on second gear,
It is characterized in that:
The distance that is offsetted between the second group of gear teeth on first gear and the gear teeth on second gear is less than first group of gear teeth on first gear and the distance that the gear teeth offsetted on second gear.
2. duplicate gear as claimed in claim 1 is characterized in that: the tooth pitch of second group of gear teeth on first gear equates.
3. duplicate gear as claimed in claim 1, it is characterized in that: be subjected under the unidirectional fexible bias pressure state at above-mentioned relatively second gear of above-mentioned first gear, on the gear teeth in above-mentioned second group of gear teeth and second gear and the distance that is offsetted between the corresponding gear teeth of these gear teeth less than on the gear teeth of more close above-mentioned first group of gear teeth in above-mentioned second group of gear teeth and second gear and the distance that is offsetted between the corresponding gear teeth of these gear teeth.
4. duplicate gear as claimed in claim 1 is characterized in that: be subjected under the unidirectional fexible bias pressure state at above-mentioned relatively second gear of above-mentioned first gear, first group of gear teeth of second group of gear teeth middle distance gear teeth farthest are positioned on the gear teeth of second gear just.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN97126404A CN1188866A (en) | 1996-12-31 | 1997-12-30 | Double gear |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR80116/96 | 1996-12-31 | ||
CN97126404A CN1188866A (en) | 1996-12-31 | 1997-12-30 | Double gear |
Publications (1)
Publication Number | Publication Date |
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CN1188866A true CN1188866A (en) | 1998-07-29 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN97126404A Pending CN1188866A (en) | 1996-12-31 | 1997-12-30 | Double gear |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104132115A (en) * | 2014-07-02 | 2014-11-05 | 中广联合移动电视***有限公司 | Double-gear structure for antenna gear clearance compensation and communication on-the-move system |
CN104329437A (en) * | 2013-10-30 | 2015-02-04 | 柳州正菱重型数控机床有限公司 | Anti-backlash gear |
CN104964022A (en) * | 2015-07-08 | 2015-10-07 | 湖北汽车工业学院 | Gear and rack transmission anti-backlash mechanism |
CN105598505A (en) * | 2016-03-31 | 2016-05-25 | 重庆工商职业学院 | Deep-hole boring single-shaft electric mechanical arm |
CN105642942A (en) * | 2016-03-31 | 2016-06-08 | 重庆工商职业学院 | Three-axis linkage boring mechanical arm |
CN105642928A (en) * | 2016-03-31 | 2016-06-08 | 重庆工商职业学院 | Boring mechanical arm boring tool structure |
CN105665763A (en) * | 2016-03-31 | 2016-06-15 | 重庆工商职业学院 | Cutting section structure of deep hole boring mechanical arm |
-
1997
- 1997-12-30 CN CN97126404A patent/CN1188866A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104329437A (en) * | 2013-10-30 | 2015-02-04 | 柳州正菱重型数控机床有限公司 | Anti-backlash gear |
CN104132115A (en) * | 2014-07-02 | 2014-11-05 | 中广联合移动电视***有限公司 | Double-gear structure for antenna gear clearance compensation and communication on-the-move system |
CN104964022A (en) * | 2015-07-08 | 2015-10-07 | 湖北汽车工业学院 | Gear and rack transmission anti-backlash mechanism |
CN104964022B (en) * | 2015-07-08 | 2017-11-17 | 湖北汽车工业学院 | Rack pinion anti-backlash mechanism |
CN105598505A (en) * | 2016-03-31 | 2016-05-25 | 重庆工商职业学院 | Deep-hole boring single-shaft electric mechanical arm |
CN105642942A (en) * | 2016-03-31 | 2016-06-08 | 重庆工商职业学院 | Three-axis linkage boring mechanical arm |
CN105642928A (en) * | 2016-03-31 | 2016-06-08 | 重庆工商职业学院 | Boring mechanical arm boring tool structure |
CN105665763A (en) * | 2016-03-31 | 2016-06-15 | 重庆工商职业学院 | Cutting section structure of deep hole boring mechanical arm |
CN105665763B (en) * | 2016-03-31 | 2018-08-17 | 重庆工商职业学院 | A kind of deep hole boring mechanical arm cutting segment structure |
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