CN104930161A - Fine tuning structure - Google Patents
Fine tuning structure Download PDFInfo
- Publication number
- CN104930161A CN104930161A CN201510284269.1A CN201510284269A CN104930161A CN 104930161 A CN104930161 A CN 104930161A CN 201510284269 A CN201510284269 A CN 201510284269A CN 104930161 A CN104930161 A CN 104930161A
- Authority
- CN
- China
- Prior art keywords
- gear
- fine tuning
- worm
- tuning structure
- perforate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/039—Gearboxes for accommodating worm gears
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
- F16H2057/126—Self-adjusting during operation, e.g. by a spring
- F16H2057/127—Self-adjusting during operation, e.g. by a spring using springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a fine tuning structure. The structure comprises a worm, a worm gear and a first gear. The worm is engaged with the worm gear. The first gear and the worm gear are coaxially arranged, and the first gear rotates along with the worm gear. The structure further comprises a second gear and a third gear, and the second gear and the third gear are overlapped and embedded with each other. The first gear is engaged with the second gear and the third gear at the same time. The second gear is provided with a first hole. The third gear is provided with a second hole. The first hole and the second hole are communicated to form a space. A transverse spring extending in the circumferential directions of the second gear and the third gear is disposed in the space. The two ends of the transverse spring are connected with the second gear and the third gear respectively.
Description
Technical field
The present invention relates to a kind of fine tuning structure of photoelectric field surveying instrument.
Background technique
Existing fine tuning structure is rotated by worm screw and drives worm gear wheel one to enclose, thus make the dial pinion rotation that engages with worm gear once, fine adjustment can be realized, but its Problems existing is, the relative worm gear of worm screw, and inevitably there is drive gap between relative second gear of the first gear coaxial with worm gear, can precision be affected in the moment of clockwise and anticlockwise.
Therefore, a kind of fine tuning structure can eliminating this gap is needed badly.
Summary of the invention
In order to overcome above-mentioned technological deficiency, the object of the present invention is to provide a kind of fine tuning structure of the drive gap produced when can eliminate fine setting.
The invention discloses a kind of fine tuning structure, comprise worm screw, worm gear, first gear, described worm screw and the engagement of described worm gear, described first gear coaxially arranges with described worm gear and rotates with described worm gear, also comprise overlapping the second mutually embedding gear and the 3rd gear, described first gear engages with described second gear and described 3rd gear simultaneously, described second gear is provided with the first perforate, described 3rd gear is provided with the second perforate, described first perforate is communicated with formation space with described second perforate, arrange in described space along described second, the crossed strip of the circumferential direction extension of the 3rd gear, its two ends are respectively with described second, 3rd gear connects.
Preferably, described first gear comprises three described first perforates, and described second gear comprises three described second perforates, and first, second perforate described is arranged in pairs, thus forms three described spaces.
Preferably, micro-adjusting mechanism comprises three described crossed strips, divides and is located in three described spaces.
Preferably, described first perforate is communicated with described second perforate part and forms described space, at the two ends of described space along described axial direction, described second gear is provided with the first hole clipping, described 3rd gear is provided with the second hole clipping, and the two ends of described crossed strip are connected with first, second hole clipping described respectively.
Preferably, the rotating shaft that is passed described first gear and described worm gear is comprised.
Preferably, the diameter of described first gear is less than described worm gear.
Preferably, the joint of described first gear and described worm gear forms boss.
Preferably, be arranged with longitudinal spring outside described rotating shaft, described longitudinal spring is compressed by described boss.
Preferably, described boss place is provided with fixing part.
Preferably, described worm screw is provided with knob away from one end of described worm gear.
Preferably, described worm screw along described second gear radial direction and establish.
Preferably, described knob along described second gear radial direction and establish.
Preferably, along the axial direction of described second gear, described worm screw and described worm gear are arranged on second, third gear the same side described.
Preferably, described worm gear is semi-circle gear.
After have employed technique scheme, compared with prior art, there is following beneficial effect:
1. using in prior art as the gear that the gear of dial drive mechanism is divided into two identical overlaps mutually embedding, and perforate on these two gears, in hole, crossed strip is set, minor rotation between two gears can be interacted, when wherein a certain gear create drive gap and fewer than another gear have rotated the several years time, crossed strip can elongate, and based on the restoring force of spring, crossed strip returns back to original state, original state before two gears can be driven to come back to rotation, thus drive gap when eliminating clockwise and anticlockwise.
2. the rotating shaft in worm gear and the first gear is arranged with longitudinal spring, boss is provided with between worm gear and the first gear, longitudinal spring is compressed in advance by boss, operationally, worm screw drives the rotation of worm gear also inevitably to make the worm and worm wheel of closely engagement originally produce and gets loose, away from problem, the setting of longitudinal spring then can avoid this problem, when worm gear gets loose gradually away from worm movement, longitudinal spring is compressed by boss, due to the restoring force of spring, longitudinal spring can produce reaction force to boss, thus worm gear is no longer tightly fitted with worm gear on the contrary again away from worm gear, maintain the clamped condition of worm and worm wheel, eliminate drive gap during clockwise and anticlockwise.
Accompanying drawing explanation
Shown in Fig. 1 is the stereogram of fine tuning structure according to the invention;
Shown in Fig. 2 is the sectional view of fine tuning structure according to the invention;
Shown in Fig. 3 is the structural representation of crossed strip in fine tuning structure according to the invention;
Shown in Fig. 4 is the structural representation of longitudinal spring in fine tuning structure according to the invention;
Shown in Fig. 5 is the structural section figure of longitudinal spring in fine tuning structure according to the invention.
Reference character:
1-worm screw;
2-worm gear;
3-first gear, 31-boss, 32-fixing part;
4-second gear, 41-first perforate, 42-first hole clipping;
5-the 3rd gear, 51-second perforate, 52-second hole clipping;
6-crossed strip, 61-hook;
7-longitudinal spring;
8-rotating shaft;
9-knob.
Embodiment
Advantage of the present invention is set forth further below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, Figure 2, Figure 3 shows, the invention provides a kind of fine tuning structure, comprise worm screw 1, worm gear 2, first gear 3, second gear 4 and the 3rd gear 5.Wherein, worm screw 1 and worm gear 2 engage, the first gear 3 with worm gear 2 is coaxial arranges and rotate with worm gear 2.In fine tuning structure of the present invention, the second gear 4 and the 3rd gear 5 are identical two gears of shape, and these two gear overlaps are mutually embedding, but the rotation of the second gear 4 and the 3rd gear 5 is independently.First gear 3 engages with the second gear 4 and the 3rd gear 5 simultaneously, when the first gear 3 rotates, the second gear 4 can be driven to rotate together with the 3rd gear 5 simultaneously.Second gear 4 is provided with the first perforate 41, 3rd gear 5 is provided with the second perforate 51, first perforate 41 is communicated with formation space with the second perforate 51, arrange in space along second, 3rd gear 4, the crossed strip 6 that the circumferential direction of 5 extends, its two ends are respectively with second, 3rd gear 4, 5 connect, the restoring force adjustment of this crossed strip 6 is in suitable scope, make when whole fine tuning structure is in complete state of rest, due to the effect of this crossed strip 6, first gear 3 is tightly fitted from the left and right sides by the second gear 4 and the 3rd gear 5, when transmission, when the first gear 3 and second, 3rd gear 4, when 5 one of them gear create drive gap, can deformation be there is in this crossed strip 6, due to the elastic property of spring itself, can by second, 3rd gear 4, 5 are withdrawn into original state.
Preferably, first gear 3 comprises three the first perforates 41, second gear 4 comprises three the second perforates 51, first, second perforate 41,51 is arranged in pairs, thus form three spaces, micro-adjusting mechanism comprises three crossed strips 6, and divide and be located in three spaces, this consideration for stability and reliability designs.Certainly, for the present invention, those skilled in the art technological scheme according to the present invention can arrange the perforate of other quantity, space, spring, also ought to fall within the scope of protection of the present invention.
Preferably, first perforate 41 is communicated with the second perforate 51 part and forms space, the two ends in axial direction in space, second gear 4 is provided with the first hole clipping 42,3rd gear 5 is provided with the second hole clipping 52, and the two ends of crossed strip 6 are connected with first, second hole clipping 42,52 respectively by the hook 61 of spring.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5, in fine tuning structure of the present invention, also comprise a rotating shaft 8 through the first gear 3 and worm gear 2.Wherein, the diameter of the first gear 3 is less than worm gear 2, boss 31 is formed with the joint of worm gear 2 at the first gear 3, outside rotating shaft 8, be arranged with longitudinal spring 7, this longitudinal spring 7 is compressed by boss 31, preferably, at boss 31 place, a fixing part 32 can be set, longitudinal spring 7 produces active force with the first gear 3 herein, makes the first gear 3 by jack-up, thus eliminates the inter-lobe clearance of this cambered surface preferably.When fine tuning structure remains static, longitudinal spring 7 is supported boss 31 and worm gear 2 and worm screw 1 is tightly fit together, and in transmission, longitudinal spring 7 is for the power upwards of boss 31, the phenomenon that gets loose occurred when can effectively be rotated by worm gear 2 and between worm screw 1 is avoided, thus the clamping at worm gear 2 and worm screw 1 place can be kept in transmission, also eliminate drive gap during clockwise and anticlockwise simultaneously.
Especially, the spring pressure size of crossed strip 6 and longitudinal spring 7 should adjust suitably, and pressure is too small does not have the effect eliminating gap, and pressure crosses conference makes gear wear accelerate, reduction of service life.
Preferably, worm screw 1 is provided with knob 9 away from one end of worm gear 2, regulates to facilitate user.Worm screw 1 and knob 9 along the second gear 4 radial direction and establish.Along the axial direction of the second gear 4, worm screw 1 and worm gear 2 are arranged on second, third gear 4,5 the same side.
Preferably, semi-circle gear selected by worm gear 2.
Fine tuning structure of the present invention, using in prior art as the gear that the gear of dial drive mechanism is divided into two identical overlaps mutually embedding, and perforate on these two gears, crossed strip 6 is set in hole, minor rotation between two gears can be interacted, when wherein a certain gear create drive gap and fewer than another gear have rotated the several years time, crossed strip 6 can elongate, and based on the restoring force of spring, crossed strip 6 returns back to original state, original state before two gears can be driven to come back to rotation, thus drive gap when eliminating clockwise and anticlockwise.Simultaneously, rotating shaft 8 in worm gear 2 and the first gear 3 is arranged with longitudinal spring 7, boss 31 is provided with between worm gear 2 and the first gear 3, longitudinal spring 7 is compressed in advance by boss 31, operationally, worm screw 1 drives the rotation of worm gear 2 also inevitably to make the worm screw 1 of closely engagement originally and worm gear 2 produce and gets loose, away from problem, the setting of longitudinal spring 7 then can avoid this problem, when worm gear 2 gradually get loose move away from worm screw 1 time, longitudinal spring 7 is compressed by boss 31, due to the restoring force of spring, longitudinal spring 7 can produce reaction force to boss 31, thus worm gear 2 is no longer tightly fitted with worm gear 2 on the contrary again away from worm gear 2, maintain the clamped condition of worm screw 1 and worm gear 2, eliminate drive gap during clockwise and anticlockwise.
Should be noted that, embodiments of the invention have preferably implementation, and not any type of restriction is done to the present invention, any person skilled in art of being familiar with may utilize the technology contents of above-mentioned announcement change or be modified to equivalent effective embodiment, in every case the content of technical solution of the present invention is not departed from, the any amendment done above embodiment according to technical spirit of the present invention or equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (14)
1. a fine tuning structure, comprises worm screw, worm gear, the first gear,
Described worm screw and the engagement of described worm gear,
Described first gear coaxially arranges with described worm gear and rotates with described worm gear,
It is characterized in that,
Also comprise overlapping the second mutually embedding gear and the 3rd gear,
Described first gear engages with described second gear and described 3rd gear simultaneously,
Described second gear is provided with the first perforate, and described 3rd gear is provided with the second perforate,
Described first perforate is communicated with formation space with described second perforate, and in described space, arrange the crossed strip that the circumferential direction along second, third gear described extends, its two ends are connected with second, third gear described respectively.
2. fine tuning structure as claimed in claim 1, it is characterized in that, described first gear comprises three described first perforates, and described second gear comprises three described second perforates, and first, second perforate described is arranged in pairs, thus forms three described spaces.
3. fine tuning structure as claimed in claim 2, is characterized in that, comprise three described crossed strips, divides and is located in three described spaces.
4. fine tuning structure as claimed in claim 1, it is characterized in that, described first perforate is communicated with described second perforate part and forms described space, at the two ends of described space along described axial direction, described second gear is provided with the first hole clipping, described 3rd gear is provided with the second hole clipping, and the two ends of described crossed strip are connected with first, second hole clipping described respectively.
5. fine tuning structure as claimed in claim 1, is characterized in that, comprises the rotating shaft that is passed described first gear and described worm gear.
6. fine tuning structure as claimed in claim 5, it is characterized in that, the diameter of described first gear is less than described worm gear.
7. fine tuning structure as claimed in claim 6, it is characterized in that, the joint of described first gear and described worm gear forms boss.
8. fine tuning structure as claimed in claim 7, it is characterized in that, be arranged with longitudinal spring outside described rotating shaft, described longitudinal spring is compressed by described boss.
9. fine tuning structure as claimed in claim 8, it is characterized in that, described boss place is provided with fixing part.
10. fine tuning structure as claimed in claim 1, it is characterized in that, described worm screw is provided with knob away from one end of described worm gear.
11. fine tuning structures as claimed in claim 9, is characterized in that, described worm screw along described second gear radial direction and establish.
12. fine tuning structures as claimed in claim 10, is characterized in that, described knob along described second gear radial direction and establish.
13. fine tuning structures as claimed in claim 1, is characterized in that, along the axial direction of described second gear, described worm screw and described worm gear are arranged on second, third gear the same side described.
14. fine tuning structures as claimed in claim 1, it is characterized in that, described worm gear is semi-circle gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284269.1A CN104930161A (en) | 2015-05-28 | 2015-05-28 | Fine tuning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284269.1A CN104930161A (en) | 2015-05-28 | 2015-05-28 | Fine tuning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104930161A true CN104930161A (en) | 2015-09-23 |
Family
ID=54117476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510284269.1A Pending CN104930161A (en) | 2015-05-28 | 2015-05-28 | Fine tuning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104930161A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370802A (en) * | 2015-11-30 | 2016-03-02 | 哈尔滨科能熔敷科技有限公司 | Linear spring type oscillator having gap eliminating function |
| CN110412775A (en) * | 2018-09-11 | 2019-11-05 | 台州市太德光学有限公司 | A kind of dynamic varifocal glasses |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332921A (en) * | 2003-04-15 | 2004-11-25 | Honda Motor Co Ltd | Worm gear mechanism and electric power steering device with worm gear mechanism |
| CN101482160A (en) * | 2008-12-08 | 2009-07-15 | 江阴凯迈机械有限公司 | Ring surface enveloped non-clearance worm and gear speed-reduction apparatus |
| EP2497975A1 (en) * | 2011-03-09 | 2012-09-12 | Aktiebolaget SKF | Wear-compensation device for a gear |
| CN202833953U (en) * | 2012-10-30 | 2013-03-27 | 贵州西南工具(集团)有限公司 | Worm wheel capable of automatically eliminating transmission gaps |
| GB2495162A (en) * | 2011-09-28 | 2013-04-03 | Showa Corp | Power steering apparatus having a preload means which energizes a bearing |
| CN203272719U (en) * | 2013-04-15 | 2013-11-06 | 佛山市南海珠江减速机有限公司 | Compact type worm and gear transmission mechanism |
| CN203386479U (en) * | 2013-03-12 | 2014-01-08 | 常州华达科捷光电仪器有限公司 | Fine adjustment mechanism and fine adjustment pedestal |
| CN103899731A (en) * | 2014-03-24 | 2014-07-02 | 惠州市德赛西威汽车电子有限公司 | Multifunctional gear and rotary knob transmission assembly applying same |
| CN104565333A (en) * | 2014-12-31 | 2015-04-29 | 西南技术物理研究所 | Method for automatically eliminating limited angle gear backlash |
| CN204739197U (en) * | 2015-05-28 | 2015-11-04 | 常州华达科捷光电仪器有限公司 | Fine setting structure |
-
2015
- 2015-05-28 CN CN201510284269.1A patent/CN104930161A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332921A (en) * | 2003-04-15 | 2004-11-25 | Honda Motor Co Ltd | Worm gear mechanism and electric power steering device with worm gear mechanism |
| CN101482160A (en) * | 2008-12-08 | 2009-07-15 | 江阴凯迈机械有限公司 | Ring surface enveloped non-clearance worm and gear speed-reduction apparatus |
| EP2497975A1 (en) * | 2011-03-09 | 2012-09-12 | Aktiebolaget SKF | Wear-compensation device for a gear |
| GB2495162A (en) * | 2011-09-28 | 2013-04-03 | Showa Corp | Power steering apparatus having a preload means which energizes a bearing |
| CN202833953U (en) * | 2012-10-30 | 2013-03-27 | 贵州西南工具(集团)有限公司 | Worm wheel capable of automatically eliminating transmission gaps |
| CN203386479U (en) * | 2013-03-12 | 2014-01-08 | 常州华达科捷光电仪器有限公司 | Fine adjustment mechanism and fine adjustment pedestal |
| CN203272719U (en) * | 2013-04-15 | 2013-11-06 | 佛山市南海珠江减速机有限公司 | Compact type worm and gear transmission mechanism |
| CN103899731A (en) * | 2014-03-24 | 2014-07-02 | 惠州市德赛西威汽车电子有限公司 | Multifunctional gear and rotary knob transmission assembly applying same |
| CN104565333A (en) * | 2014-12-31 | 2015-04-29 | 西南技术物理研究所 | Method for automatically eliminating limited angle gear backlash |
| CN204739197U (en) * | 2015-05-28 | 2015-11-04 | 常州华达科捷光电仪器有限公司 | Fine setting structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370802A (en) * | 2015-11-30 | 2016-03-02 | 哈尔滨科能熔敷科技有限公司 | Linear spring type oscillator having gap eliminating function |
| CN110412775A (en) * | 2018-09-11 | 2019-11-05 | 台州市太德光学有限公司 | A kind of dynamic varifocal glasses |
| CN110412775B (en) * | 2018-09-11 | 2020-09-04 | 台州市太德光学有限公司 | Dynamic zoom glasses |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
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| RJ01 | Rejection of invention patent application after publication |