CN201110359Y - Gear overload protection mechanism - Google Patents
Gear overload protection mechanism Download PDFInfo
- Publication number
- CN201110359Y CN201110359Y CNU2007203117116U CN200720311711U CN201110359Y CN 201110359 Y CN201110359 Y CN 201110359Y CN U2007203117116 U CNU2007203117116 U CN U2007203117116U CN 200720311711 U CN200720311711 U CN 200720311711U CN 201110359 Y CN201110359 Y CN 201110359Y
- Authority
- CN
- China
- Prior art keywords
- gear
- reed
- skeleton dish
- gear shaft
- floral disc
- 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.)
- Expired - Fee Related
Links
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000000670 limiting effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000001771 impaired effect Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Gears, Cams (AREA)
Abstract
The utility model relates to a protection mechanism for gear overload, which belongs to the technical field of gear materials, wherein a center circular hole is arranged on the gear, a cylindrical section which is matched with the center circular hole is arranged on the center portion of a gear shaft, a locating circular platform is arranged on the gear shaft, the eternal diameter of the locating circular platform is larger than the aperture of the center circular hole, a flat part is formed on the other end of the gear shaft which is closed to the cylindrical section, a frame disc which is con-centered with the gear end surface is fixed on the gear end surface, a plurality of arc grooves are arranged on the end surface of the frame disc, a slope is arranged between the two ends of the arc groove and the end surface of the frame disc, a floral disc is arranged on the outer end of the frame disc, a near rectangular hole which is matched with the flat part of the gear shaft is arranged on the center of the floral disc, a plurality of fork handles which are matched with the grooves of the frame disc are arranged on the periphery of the floral disc, a pressing reed is arranged on the outer end of the floral disc, a center hole which allows the flat part to pass through is arranged on the reed, and a clipping ring which limits the position of the outer end of the reed to the axial direction is arranged on the outer end of the reed, and the protection mechanism has compact structure and good reliability.
Description
Technical field
The utility model relates to a kind of gear overload protecting mechanism, belongs to the just technical field of driving mechanism of gear.
Background technique
Gear transmission is a driving mechanism the most commonly used in the mechanical transmission; yet tend to occur cause gear impaired or cause motor burning because of overload in gear transmission; thereby cause the damage of this equipment; old friends also adopt the overload protecting mechanism of form impaired because of overload to prevent gear; as Chinese patent application prospectus overload clutch device (publication number: CN1867781A); be used to have the electric tools of a motor; can drive an embedded bit tool rotation by this motor; this overload clutch device has first and second clutch mechanism of mutual correspondence, and this first clutch mechanism is fixed on the output shaft with depending on power.Its reliability of said gear overload protecting mechanism is relatively poor.
Summary of the invention
The utility model purpose is to provide a kind of compact structure, and reliability is the gear overload protecting mechanism preferably, has solved problems such as reliability that existing gear overload protecting mechanism exists is relatively poor.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: it comprises gear shaft and gear, described gear is provided with center hole, described gear shaft middle part is provided with the cylindrical section that the center hole with gear matches, the position that gear shaft is adjacent with cylindrical section one end is provided with positioning round table, the external diameter of described positioning round table is greater than the aperture of Gear center circular hole, the other end that gear shaft and cylindrical section are adjacent is formed with plat part, be fixed with concentric with it skeleton dish on the described gear face, circumferencial direction relative fixed between skeleton dish and the gear, described skeleton dish end face is provided with several along the circumferential direction equally distributed arc grooves, between described arc groove two ends and the skeleton dish end face by the slope transition, the outer end of skeleton dish is provided with floral disc, described floral disc center is provided with the nearly rectangular opening that has cooperated the moment of torsion transfer function with the plat part of gear shaft, the floral disc circumference is provided with the fork handle of the groove fit of several and skeleton dish, the outer end of described floral disc is provided with and compresses reed, described reed is provided with the center hole that the plat part for gear shaft passes, and the outer end of described reed is provided with the snap ring with reed outer end axial limiting.Under the normal condition, floral disc is pressed towards the skeleton dish under the effect of reed, the fork handle of floral disc is engaged in the groove of skeleton dish, floral disc cooperates the moment of torsion of accepting from gear shaft by the nearly rectangular opening at its center with the plat part of gear shaft, floral disc then passes to the skeleton dish by the groove fit of its fork handle and skeleton dish with moment of torsion, the skeleton dish then passes to gear with moment of torsion, and gear meshes with the next stage gear engagement or with load again; When the moment of torsion that is subjected to when gear surpassed predefined load, the fork handle of floral disc was crossed the slope and is skidded off groove from the groove of skeleton dish, thereby made the transmission that disconnects moment of torsion between gear and the gear shaft, and reed then is squeezed; But the suffered load restoration of gear is during to the load that sets in advance, and floral disc cooperates the effect that moment of torsion transmits of playing again with the skeleton dish under the elastic force effect of reed.The utility model compact structure, moment of torsion transmission and overload protection are reliable, and can effectively protect gear and equipment to avoid overload and damage, thus the working life of prolongation equipment.
As preferably, described gear is provided with skeleton dish end and forms concave inward structure, the bottom surface of described concave inward structure is provided with several projections, described center hole outer end circumferential circularizes projection, described skeleton dish is provided with the circular hole that several cooperate with projection, and the center hole aperture of skeleton dish and the annular protrusion external diameter on the gear match.Wherein, both the branch body structure can be adopted between skeleton dish and the gear, also integrative-structure can be adopted.
As preferably, described gear is the one injection made gear.Since the relative metal gear of injection made gear easier because of overload impaired, so the overload protection of the especially suitable injection made gear of the overload protection of the utility model.
As preferably, be provided with compressing tablet between described snap ring and the reed, the plat part of described compressing tablet center hole and gear shaft matches, and the external diameter of compressing tablet is greater than the center hole of reed.Wherein, compressing tablet can further guarantee the pressuring action of reed to floral disc, improves the reliability that the utility model moment of torsion transmits.
As preferably, described skeleton dish is provided with three arc grooves of evenly arranging, described floral disc be provided with three with the skeleton dish on the fork handle of groove fit.
Therefore, the utlity model has compact structure, characteristics such as reliability is better.
Description of drawings
Fig. 1 is a kind of decomposition texture schematic representation of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, gear 1 is the one injection made gear, gear 1 is provided with center hole 2, gear shaft 3 middle parts are provided with the cylindrical section 4 that the center hole 2 with gear 1 matches, gear shaft 3 positions adjacent with cylindrical section 4 one ends are provided with positioning round table 5, the external diameter of positioning round table 5 is greater than the aperture of Gear center circular hole 2, gear shaft 3 and the cylindrical section 4 adjacent the other ends are formed with plat part 6, gear 1 forms concave inward structure 7 away from the end face of positioning round table 5, the bottom surface of concave inward structure 7 is provided with six projections of evenly arranging 8, center hole 2 outer end circumferential circularize projection 9, match with center hole 11 apertures of the concentric skeleton dish 10 of gear 1 and annular protrusion 9 external diameters on the gear 1, skeleton dish 10 is provided with six circular holes 12 that cooperate with projection 8, between skeleton dish 10 and the gear 1 by circular hole 12 and cooperating of projection 8 realizing circumferencial direction relative fixed between the two, if skeleton dish 10 end faces are provided with three along the circumferential direction equally distributed arc grooves 13, between arc groove 13 two ends and skeleton dish 10 end faces by slope 14 transition, the outer end of skeleton dish 10 is provided with floral disc 15, floral disc 15 centers are provided with the nearly rectangular opening 16 that has cooperated the moment of torsion transfer function with the plat part 6 of gear shaft 3, floral disc 15 circumference are provided with three fork handles 17 that cooperate with the arc groove 13 of skeleton dish 10, the outer end of floral disc 15 is provided with and compresses reed 18, reed 18 is provided with the center hole 19 that the plat part 6 for gear shaft 3 passes, the outer end of reed 18 is provided with the snap ring 20 with reed 18 outer end axial limitings, be provided with compressing tablet 21 between snap ring 20 and the reed 18, compressing tablet 21 center holes 22 match with the plat part 6 of gear shaft 3, and the external diameter of compressing tablet 21 is greater than the center hole 19 of reed 18.
Under the normal condition, floral disc is pressed towards the skeleton dish under the effect of reed, the fork handle of floral disc is engaged in the groove of skeleton dish, floral disc cooperates the moment of torsion of accepting from gear shaft by the nearly rectangular opening at its center with the plat part of gear shaft, floral disc then passes to the skeleton dish by the groove fit of its fork handle and skeleton dish with moment of torsion, the skeleton dish then passes to gear with moment of torsion, and gear meshes with the next stage gear engagement or with load again; When the moment of torsion that is subjected to when gear surpassed predefined load, the fork handle of floral disc was crossed the slope and is skidded off groove from the groove of skeleton dish, thereby made the transmission that disconnects moment of torsion between gear and the gear shaft, and reed then is squeezed; But the suffered load restoration of gear is during to the load that sets in advance, and floral disc cooperates the effect that moment of torsion transmits of playing again with the skeleton dish under the elastic force effect of reed.The utility model compact structure, moment of torsion transmission and overload protection are reliable, and can effectively protect gear and equipment to avoid overload and damage, thus the working life of prolongation equipment.
Claims (5)
1; a kind of gear overload protecting mechanism; comprise gear shaft and gear; it is characterized in that: described gear is provided with center hole; described gear shaft middle part is provided with the cylindrical section that the center hole with gear matches; the position that gear shaft is adjacent with cylindrical section one end is provided with positioning round table; the external diameter of described positioning round table is greater than the aperture of Gear center circular hole; the other end that gear shaft and cylindrical section are adjacent is formed with plat part; be fixed with concentric with it skeleton dish on the described gear face; circumferencial direction relative fixed between skeleton dish and the gear; described skeleton dish end face is provided with several along the circumferential direction equally distributed arc grooves; between described arc groove two ends and the skeleton dish end face by the slope transition; the outer end of skeleton dish is provided with floral disc; described floral disc center is provided with the nearly rectangular opening that has cooperated the moment of torsion transfer function with the plat part of gear shaft; the floral disc circumference is provided with the fork handle of the groove fit of several and skeleton dish; the outer end of described floral disc is provided with and compresses reed; described reed is provided with the center hole that the plat part for gear shaft passes, and the outer end of described reed is provided with the snap ring with reed outer end axial limiting.
2, gear overload protecting mechanism according to claim 1; it is characterized in that described gear is provided with skeleton dish end and forms concave inward structure; the bottom surface of described concave inward structure is provided with several projections; described center hole outer end circumferential circularizes projection; described skeleton dish is provided with the circular hole that several cooperate with projection, and the center hole aperture of skeleton dish and the annular protrusion external diameter on the gear match.
3, gear overload protecting mechanism according to claim 1 and 2 is characterized in that described gear is the one injection made gear.
4, gear overload protecting mechanism according to claim 1 and 2 is characterized in that being provided with compressing tablet between described snap ring and the reed, and the plat part of described compressing tablet center hole and gear shaft matches, and the external diameter of compressing tablet is greater than the center hole of reed.
5, gear overload protecting mechanism according to claim 1 and 2 is characterized in that described skeleton dish is provided with three arc grooves of evenly arranging, described floral disc be provided with three with the skeleton dish on the fork handle of groove fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203117116U CN201110359Y (en) | 2007-12-17 | 2007-12-17 | Gear overload protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203117116U CN201110359Y (en) | 2007-12-17 | 2007-12-17 | Gear overload protection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110359Y true CN201110359Y (en) | 2008-09-03 |
Family
ID=39894890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203117116U Expired - Fee Related CN201110359Y (en) | 2007-12-17 | 2007-12-17 | Gear overload protection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110359Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905431A (en) * | 2009-06-03 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Overload protection mechanism and coupling device adopting the overload protection mechanism |
| CN106402313A (en) * | 2016-10-20 | 2017-02-15 | 珠海格力电器股份有限公司 | Transmission assembly and blade-rotating fan with same |
| CN106436045A (en) * | 2016-11-01 | 2017-02-22 | 闫瑞东 | Cloth feeding mechanism for eyelet button hole sewing machine |
| CN107859720A (en) * | 2017-11-28 | 2018-03-30 | 深圳市优必选科技有限公司 | Overload protection structure and its steering gear |
| CN107882951A (en) * | 2016-09-29 | 2018-04-06 | 中国航发商用航空发动机有限责任公司 | A kind of vibration-reduction gear structure with overload protection function |
-
2007
- 2007-12-17 CN CNU2007203117116U patent/CN201110359Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905431A (en) * | 2009-06-03 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Overload protection mechanism and coupling device adopting the overload protection mechanism |
| CN101905431B (en) * | 2009-06-03 | 2013-04-24 | 鸿富锦精密工业（深圳）有限公司 | Overload protection mechanism and coupling device adopting same |
| CN107882951A (en) * | 2016-09-29 | 2018-04-06 | 中国航发商用航空发动机有限责任公司 | A kind of vibration-reduction gear structure with overload protection function |
| CN106402313A (en) * | 2016-10-20 | 2017-02-15 | 珠海格力电器股份有限公司 | Transmission assembly and blade-rotating fan with same |
| CN106436045A (en) * | 2016-11-01 | 2017-02-22 | 闫瑞东 | Cloth feeding mechanism for eyelet button hole sewing machine |
| CN106436045B (en) * | 2016-11-01 | 2019-05-17 | 闫瑞东 | A kind of eyelet buttonhole sewing machine cloth feeding mechanism |
| CN107859720A (en) * | 2017-11-28 | 2018-03-30 | 深圳市优必选科技有限公司 | Overload protection structure and its steering gear |
| CN107859720B (en) * | 2017-11-28 | 2024-05-03 | 深圳市优必选科技有限公司 | Overload protection structure and steering engine with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20101217 |